Merge branch 'libpng15'
Conflicts:
ANNOUNCE
CHANGES
CMakeLists.txt
INSTALL
LICENSE
Makefile.am
Makefile.in
README
TODO
aclocal.m4
config.guess
config.h.in
config.sub
configure
configure.ac
contrib/gregbook/COPYING
contrib/gregbook/Makefile.sgi
contrib/gregbook/Makefile.unx
contrib/gregbook/README
contrib/gregbook/readpng2.c
contrib/gregbook/rpng-x.c
contrib/gregbook/rpng2-win.c
contrib/gregbook/rpng2-x.c
contrib/pngminim/decoder/README
contrib/pngminim/decoder/makefile
contrib/pngminim/decoder/pngusr.h
contrib/pngminim/encoder/README
contrib/pngminim/encoder/makefile
contrib/pngminim/encoder/pngusr.h
contrib/pngminim/preader/README
contrib/pngminim/preader/makefile
contrib/pngminim/preader/pngusr.h
contrib/pngminus/makefile.std
contrib/pngsuite/README
contrib/visupng/PngFile.c
contrib/visupng/PngFile.h
contrib/visupng/VisualPng.c
depcomp
example.c
install-sh
libpng-1.4.9beta01.txt
libpng-manual.txt
libpng.3
libpng.txt
libpngpf.3
ltmain.sh
png.5
png.c
png.h
pngconf.h
pngerror.c
pngget.c
pngmem.c
pngpread.c
pngpriv.h
pngread.c
pngrio.c
pngrtran.c
pngrutil.c
pngset.c
pngtest.c
pngtest.png
pngtrans.c
pngwio.c
pngwrite.c
pngwtran.c
pngwutil.c
projects/visualc6/README.txt
projects/visualc6/libpng.dsp
projects/visualc6/pngtest.dsp
projects/visualc71/README.txt
projects/visualc71/libpng.sln
projects/visualc71/libpng.vcproj
projects/visualc71/pngtest.vcproj
projects/visualc71/zlib.vcproj
projects/vstudio/libpng/libpng.vcxproj
projects/vstudio/pngtest/pngtest.vcxproj
projects/vstudio/readme.txt
projects/vstudio/vstudio.sln
projects/vstudio/zlib.props
projects/vstudio/zlib/zlib.vcxproj
scripts/README.txt
scripts/descrip.mms
scripts/libpng-config-head.in
scripts/libpng.pc.in
scripts/makefile.32sunu
scripts/makefile.64sunu
scripts/makefile.aix
scripts/makefile.amiga
scripts/makefile.bc32
scripts/makefile.beos
scripts/makefile.bor
scripts/makefile.cegcc
scripts/makefile.cygwin
scripts/makefile.darwin
scripts/makefile.dec
scripts/makefile.dj2
scripts/makefile.elf
scripts/makefile.freebsd
scripts/makefile.gcc
scripts/makefile.hp64
scripts/makefile.hpgcc
scripts/makefile.hpux
scripts/makefile.ibmc
scripts/makefile.intel
scripts/makefile.knr
scripts/makefile.linux
scripts/makefile.mingw
scripts/makefile.mips
scripts/makefile.msc
scripts/makefile.ne12bsd
scripts/makefile.netbsd
scripts/makefile.openbsd
scripts/makefile.os2
scripts/makefile.sco
scripts/makefile.sggcc
scripts/makefile.sgi
scripts/makefile.so9
scripts/makefile.solaris
scripts/makefile.solaris-x86
scripts/makefile.std
scripts/makefile.sunos
scripts/makefile.tc3
scripts/makefile.vcwin32
scripts/makefile.watcom
scripts/makevms.com
scripts/png32ce.def
scripts/pngos2.def
diff --git a/ANNOUNCE b/ANNOUNCE
index 7138a18..551aa27 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
-Libpng 1.4.9beta01 - September 2, 2011
+Libpng 1.5.10beta01 - February 21, 2012
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@@ -9,31 +9,36 @@
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
- 1.4.9beta01.tar.xz (LZMA-compressed, recommended)
- 1.4.9beta01.tar.gz
- 1.4.9beta01.tar.bz2
+ 1.5.10beta01.tar.xz (LZMA-compressed, recommended)
+ 1.5.10beta01.tar.gz
+ 1.5.10beta01.tar.bz2
Source files with CRLF line endings (for Windows), without the
"configure" script
- lp149b01.7z (LZMA-compressed, recommended)
- lp149b01.zip
+ lp1510b01.7z (LZMA-compressed, recommended)
+ lp1510b01.zip
Other information:
- 1.4.9beta01-README.txt
- 1.4.9beta01-LICENSE.txt
+ 1.5.10beta01-README.txt
+ 1.5.10beta01-LICENSE.txt
-Changes since the last public release (1.4.8):
+Changes since the last public release (1.5.9):
-version 1.4.9beta01 [September 2, 2011]
- Added vstudio/* and CMakeLists to EXTRA_DIST in Makefile.in and Makefile.am
- Updated contrib/pngminus/makefile.std (Samuli Souminen)
- Added SunOS support to configure.ac and Makefile.am (but configure and
- Makefile.in were not updated)
+Version 1.5.10beta01 [February 21, 2012]
+ Removed two useless #ifdef directives from pngread.c and one from pngrutil.c
+ Always put the CMAKE_LIBRARY in "lib" (removed special WIN32 case).
+ Removed empty vstudio/pngstest directory (Clifford Yapp).
+ Eliminated redundant png_push_read_tEXt|zTXt|iTXt|unknown code from
+ pngpread.c and use the sequential png_handle_tEXt, etc., in pngrutil.c;
+ now that png_ptr->buffer is inaccessible to applications, the special
+ handling is no longer useful.
+ Fixed bug with png_handle_hIST with odd chunk length (Frank Busse).
-Send comments/corrections/commendations to glennrp at users.sourceforge.net
-or to png-mng-implement at lists.sf.net (subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement).
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
+(subscription required; visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe) or to glennrp at users.sourceforge.net
Glenn R-P
diff --git a/CHANGES b/CHANGES
index 5c30c35..4058701 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,11 +1,11 @@
#if 0
CHANGES - changes for libpng
-version 0.2
+Version 0.2
added reader into png.h
fixed small problems in stub file
-version 0.3
+Version 0.3
added pull reader
split up pngwrite.c to several files
added pnglib.txt
@@ -14,9 +14,9 @@
fixed some bugs in writer
interfaced with zlib 0.5
added K&R support
- added check for 64 KB blocks for 16 bit machines
+ added check for 64 KB blocks for 16-bit machines
-version 0.4
+Version 0.4
cleaned up code and commented code
simplified time handling into png_time
created png_color_16 and png_color_8 to handle color needs
@@ -27,28 +27,28 @@
cleaned up zTXt reader and writer (using zlib's Reset functions)
split transformations into pngrtran.c and pngwtran.c
-version 0.5
+Version 0.5
interfaced with zlib 0.8
fixed many reading and writing bugs
saved using 3 spaces instead of tabs
-version 0.6
+Version 0.6
added png_large_malloc() and png_large_free()
added png_size_t
cleaned up some compiler warnings
added png_start_read_image()
-version 0.7
+Version 0.7
cleaned up lots of bugs
finished dithering and other stuff
added test program
changed name from pnglib to libpng
-version 0.71 [June, 1995]
+Version 0.71 [June, 1995]
changed pngtest.png for zlib 0.93
fixed error in libpng.txt and example.c
-version 0.8
+Version 0.8
cleaned up some bugs
added png_set_filler()
split up pngstub.c into pngmem.c, pngio.c, and pngerror.c
@@ -62,191 +62,196 @@
changed external functions passing floats to doubles (k&r problems?)
put all the configurable stuff in pngconf.h
enabled png_set_shift to work with paletted images on read
- added png_read_update_info() - updates info structure with
- transformations
+ added png_read_update_info() - updates info structure with transformations
-version 0.81 [August, 1995]
+Version 0.81 [August, 1995]
incorporated Tim Wegner's medium model code (thanks, Tim)
-version 0.82 [September, 1995]
+Version 0.82 [September, 1995]
[unspecified changes]
-version 0.85 [December, 1995]
+Version 0.85 [December, 1995]
added more medium model code (almost everything's a far)
added i/o, error, and memory callback functions
- fixed some bugs (16 bit, 4 bit interlaced, etc.)
+ fixed some bugs (16-bit, 4-bit interlaced, etc.)
added first run progressive reader (barely tested)
-version 0.86 [January, 1996]
+Version 0.86 [January, 1996]
fixed bugs
improved documentation
-version 0.87 [January, 1996]
+Version 0.87 [January, 1996]
fixed medium model bugs
fixed other bugs introduced in 0.85 and 0.86
added some minor documentation
-version 0.88 [January, 1996]
+Version 0.88 [January, 1996]
fixed progressive bugs
replaced tabs with spaces
cleaned up documentation
added callbacks for read/write and warning/error functions
-version 0.89 [July, 1996]
- added new initialization API to make libpng work better with shared libs
- we now have png_create_read_struct(), png_create_write_struct(),
- png_create_info_struct(), png_destroy_read_struct(), and
- png_destroy_write_struct() instead of the separate calls to
- malloc and png_read_init(), png_info_init(), and png_write_init()
- changed warning/error callback functions to fix bug - this means you
- should use the new initialization API if you were using the old
- png_set_message_fn() calls, and that the old API no longer exists
- so that people are aware that they need to change their code
- changed filter selection API to allow selection of multiple filters
- since it didn't work in previous versions of libpng anyways
- optimized filter selection code
- fixed png_set_background() to allow using an arbitrary RGB color for
- paletted images
- fixed gamma and background correction for paletted images, so
- png_correct_palette is not needed unless you are correcting an
- external palette (you will need to #define PNG_CORRECT_PALETTE_SUPPORTED
- in pngconf.h) - if nobody uses this, it may disappear in the future.
- fixed bug with Borland 64K memory allocation (Alexander Lehmann)
- fixed bug in interlace handling (Smarasderagd, I think)
- added more error checking for writing and image to reduce invalid files
- separated read and write functions so that they won't both be linked
- into a binary when only reading or writing functionality is used
- new pngtest image also has interlacing and zTXt
- updated documentation to reflect new API
+Version 0.89 [July, 1996]
+ Added new initialization API to make libpng work better with shared libs
+ we now have png_create_read_struct(), png_create_write_struct(),
+ png_create_info_struct(), png_destroy_read_struct(), and
+ png_destroy_write_struct() instead of the separate calls to
+ malloc and png_read_init(), png_info_init(), and png_write_init()
+ Changed warning/error callback functions to fix bug - this means you
+ should use the new initialization API if you were using the old
+ png_set_message_fn() calls, and that the old API no longer exists
+ so that people are aware that they need to change their code
+ Changed filter selection API to allow selection of multiple filters
+ since it didn't work in previous versions of libpng anyways
+ Optimized filter selection code
+ Fixed png_set_background() to allow using an arbitrary RGB color for
+ paletted images
+ Fixed gamma and background correction for paletted images, so
+ png_correct_palette is not needed unless you are correcting an
+ external palette (you will need to #define PNG_CORRECT_PALETTE_SUPPORTED
+ in pngconf.h) - if nobody uses this, it may disappear in the future.
+ Fixed bug with Borland 64K memory allocation (Alexander Lehmann)
+ Fixed bug in interlace handling (Smarasderagd, I think)
+ Added more error checking for writing and image to reduce invalid files
+ Separated read and write functions so that they won't both be linked
+ into a binary when only reading or writing functionality is used
+ New pngtest image also has interlacing and zTXt
+ Updated documentation to reflect new API
-version 0.90 [January, 1997]
- made CRC errors/warnings on critical and ancillary chunks configurable
+Version 0.90 [January, 1997]
+ Made CRC errors/warnings on critical and ancillary chunks configurable
libpng will use the zlib CRC routines by (compile-time) default
- changed DOS small/medium model memory support - needs zlib 1.04 (Tim Wegner)
- added external C++ wrapper statements to png.h (Gilles Dauphin)
- allow PNG file to be read when some or all of file signature has already
- been read from the beginning of the stream. ****This affects the size
- of info_struct and invalidates all programs that use a shared libpng****
- fixed png_filler() declarations
- fixed? background color conversions
- fixed order of error function pointers to match documentation
- current chunk name is now available in png_struct to reduce the number
- of nearly identical error messages (will simplify multi-lingual
- support when available)
- try to get ready for unknown-chunk callback functions:
- - previously read critical chunks are flagged, so the chunk handling
- routines can determine if the chunk is in the right place
- - all chunk handling routines have the same prototypes, so we will
- be able to handle all chunks via a callback mechanism
- try to fix Linux "setjmp" buffer size problems
- removed png_large_malloc, png_large_free, and png_realloc functions.
+ Changed DOS small/medium model memory support - needs zlib 1.04 (Tim Wegner)
+ Added external C++ wrapper statements to png.h (Gilles Dauphin)
+ Allow PNG file to be read when some or all of file signature has already
+ been read from the beginning of the stream. ****This affects the size
+ of info_struct and invalidates all programs that use a shared libpng****
+ Fixed png_filler() declarations
+ Fixed? background color conversions
+ Fixed order of error function pointers to match documentation
+ Current chunk name is now available in png_struct to reduce the number
+ of nearly identical error messages (will simplify multi-lingual
+ support when available)
+ Try to get ready for unknown-chunk callback functions:
+ - previously read critical chunks are flagged, so the chunk handling
+ routines can determine if the chunk is in the right place
+ - all chunk handling routines have the same prototypes, so we will
+ be able to handle all chunks via a callback mechanism
+ Try to fix Linux "setjmp" buffer size problems
+ Removed png_large_malloc, png_large_free, and png_realloc functions.
-version 0.95 [March, 1997]
- fixed bug in pngwutil.c allocating "up_row" twice and "avg_row" never
- fixed bug in PNG file signature compares when start != 0
- changed parameter type of png_set_filler(...filler...) from png_byte
- to png_uint_32
- added test for MACOS to ensure that both math.h and fp.h are not #included
- added macros for libpng to be compiled as a Windows DLL (Andreas Kupries)
- added "packswap" transformation, which changes the endianness of
- packed-pixel bytes (Kevin Bracey)
- added "strip_alpha" transformation, which removes the alpha channel of
- input images without using it (not necessarily a good idea)
- added "swap_alpha" transformation, which puts the alpha channel in front
- of the color bytes instead of after
- removed all implicit variable tests which assume NULL == 0 (I think)
- changed several variables to "png_size_t" to show 16/32-bit limitations
- added new pCAL chunk read/write support
- added experimental filter selection weighting (Greg Roelofs)
- removed old png_set_rgbx() and png_set_xrgb() functions that have been
+Version 0.95 [March, 1997]
+ Fixed bug in pngwutil.c allocating "up_row" twice and "avg_row" never
+ Fixed bug in PNG file signature compares when start != 0
+ Changed parameter type of png_set_filler(...filler...) from png_byte
+ to png_uint_32
+ Added test for MACOS to ensure that both math.h and fp.h are not #included
+ Added macros for libpng to be compiled as a Windows DLL (Andreas Kupries)
+ Added "packswap" transformation, which changes the endianness of
+ packed-pixel bytes (Kevin Bracey)
+ Added "strip_alpha" transformation, which removes the alpha channel of
+ input images without using it (not necessarily a good idea)
+ Added "swap_alpha" transformation, which puts the alpha channel in front
+ of the color bytes instead of after
+ Removed all implicit variable tests which assume NULL == 0 (I think)
+ Changed several variables to "png_size_t" to show 16/32-bit limitations
+ Added new pCAL chunk read/write support
+ Added experimental filter selection weighting (Greg Roelofs)
+ Removed old png_set_rgbx() and png_set_xrgb() functions that have been
obsolete for about 2 years now (use png_set_filler() instead)
- added macros to read 16- and 32-bit ints directly from buffer, to be
- used only on those systems that support it (namely PowerPC and 680x0)
- With some testing, this may become the default for MACOS/PPC systems.
- only calculate CRC on data if we are going to use it
- added macros for zTXt compression type PNG_zTXt_COMPRESSION_???
- added macros for simple libpng debugging output selectable at compile time
- removed PNG_READ_END_MODE in progressive reader (Smarasderagd)
- more description of info_struct in libpng.txt and png.h
- more instructions in example.c
- more chunk types tested in pngtest.c
- renamed pngrcb.c to pngset.c, and all png_read_<chunk> functions to be
- png_set_<chunk>. We now have corresponding png_get_<chunk>
- functions in pngget.c to get information in info_ptr. This isolates
- the application from the internal organization of png_info_struct
- (good for shared library implementations).
+ Added macros to read 16- and 32-bit ints directly from buffer, to be
+ used only on those systems that support it (namely PowerPC and 680x0)
+ With some testing, this may become the default for MACOS/PPC systems.
+ Only calculate CRC on data if we are going to use it
+ Added macros for zTXt compression type PNG_zTXt_COMPRESSION_???
+ Added macros for simple libpng debugging output selectable at compile time
+ Removed PNG_READ_END_MODE in progressive reader (Smarasderagd)
+ More description of info_struct in libpng.txt and png.h
+ More instructions in example.c
+ More chunk types tested in pngtest.c
+ Renamed pngrcb.c to pngset.c, and all png_read_<chunk> functions to be
+ png_set_<chunk>. We now have corresponding png_get_<chunk>
+ functions in pngget.c to get information in info_ptr. This isolates
+ the application from the internal organization of png_info_struct
+ (good for shared library implementations).
-version 0.96 [May, 1997]
- fixed serious bug with < 8bpp images introduced in 0.95
- fixed 256-color transparency bug (Greg Roelofs)
- fixed up documentation (Greg Roelofs, Laszlo Nyul)
- fixed "error" in pngconf.h for Linux setjmp() behaviour
- fixed DOS medium model support (Tim Wegner)
- fixed png_check_keyword() for case with error in static string text
- added read of CRC after IEND chunk for embedded PNGs (Laszlo Nyul)
- added typecasts to quiet compiler errors
- added more debugging info
+Version 0.96 [May, 1997]
+ Fixed serious bug with < 8bpp images introduced in 0.95
+ Fixed 256-color transparency bug (Greg Roelofs)
+ Fixed up documentation (Greg Roelofs, Laszlo Nyul)
+ Fixed "error" in pngconf.h for Linux setjmp() behavior
+ Fixed DOS medium model support (Tim Wegner)
+ Fixed png_check_keyword() for case with error in static string text
+ Added read of CRC after IEND chunk for embedded PNGs (Laszlo Nyul)
+ Added typecasts to quiet compiler errors
+ Added more debugging info
-version 0.97 [January, 1998]
- removed PNG_USE_OWN_CRC capability
- relocated png_set_crc_action from pngrutil.c to pngrtran.c
- fixed typecasts of "new_key", etc. (Andreas Dilger)
- added RFC 1152 [sic] date support
- fixed bug in gamma handling of 4-bit grayscale
- added 2-bit grayscale gamma handling (Glenn R-P)
- added more typecasts. 65536L becomes (png_uint_32)65536L, etc. (Glenn R-P)
- minor corrections in libpng.txt
- added simple sRGB support (Glenn R-P)
- easier conditional compiling, e.g. define PNG_READ/WRITE_NOT_FULLY_SUPPORTED;
- all configurable options can be selected from command-line instead
- of having to edit pngconf.h (Glenn R-P)
- fixed memory leak in pngwrite.c (free info_ptr->text) (Glenn R-P)
- added more conditions for png_do_background, to avoid changing
- black pixels to background when a background is supplied and
- no pixels are transparent
- repaired PNG_NO_STDIO behaviour
- tested NODIV support and made it default behaviour (Greg Roelofs)
- added "-m" option and PNGTEST_DEBUG_MEMORY to pngtest (John Bowler)
- regularized version numbering scheme and bumped shared-library major
- version number to 2 to avoid problems with libpng 0.89 apps (Greg Roelofs)
+Version 0.97 [January, 1998]
+ Removed PNG_USE_OWN_CRC capability
+ Relocated png_set_crc_action from pngrutil.c to pngrtran.c
+ Fixed typecasts of "new_key", etc. (Andreas Dilger)
+ Added RFC 1152 [sic] date support
+ Fixed bug in gamma handling of 4-bit grayscale
+ Added 2-bit grayscale gamma handling (Glenn R-P)
+ Added more typecasts. 65536L becomes (png_uint_32)65536L, etc. (Glenn R-P)
+ Minor corrections in libpng.txt
+ Added simple sRGB support (Glenn R-P)
+ Easier conditional compiling, e.g.,
+ define PNG_READ/WRITE_NOT_FULLY_SUPPORTED;
+ all configurable options can be selected from command-line instead
+ of having to edit pngconf.h (Glenn R-P)
+ Fixed memory leak in pngwrite.c (free info_ptr->text) (Glenn R-P)
+ Added more conditions for png_do_background, to avoid changing
+ black pixels to background when a background is supplied and
+ no pixels are transparent
+ Repaired PNG_NO_STDIO behavior
+ Tested NODIV support and made it default behavior (Greg Roelofs)
+ Added "-m" option and PNGTEST_DEBUG_MEMORY to pngtest (John Bowler)
+ Regularized version numbering scheme and bumped shared-library major
+ version number to 2 to avoid problems with libpng 0.89 apps
+ (Greg Roelofs)
-version 0.98 [January, 1998]
- cleaned up some typos in libpng.txt and in code documentation
- fixed memory leaks in pCAL chunk processing (Glenn R-P and John Bowler)
- cosmetic change "display_gamma" to "screen_gamma" in pngrtran.c
- changed recommendation about file_gamma for PC images to .51 from .45,
- in example.c and libpng.txt, added comments to distinguish between
- screen_gamma, viewing_gamma, and display_gamma.
- changed all references to RFC1152 to read RFC1123 and changed the
- PNG_TIME_RFC1152_SUPPORTED macro to PNG_TIME_RFC1123_SUPPORTED
- added png_invert_alpha capability (Glenn R-P -- suggestion by Jon Vincent)
- changed srgb_intent from png_byte to int to avoid compiler bugs
+Version 0.98 [January, 1998]
+ Cleaned up some typos in libpng.txt and in code documentation
+ Fixed memory leaks in pCAL chunk processing (Glenn R-P and John Bowler)
+ Cosmetic change "display_gamma" to "screen_gamma" in pngrtran.c
+ Changed recommendation about file_gamma for PC images to .51 from .45,
+ in example.c and libpng.txt, added comments to distinguish between
+ screen_gamma, viewing_gamma, and display_gamma.
+ Changed all references to RFC1152 to read RFC1123 and changed the
+ PNG_TIME_RFC1152_SUPPORTED macro to PNG_TIME_RFC1123_SUPPORTED
+ Added png_invert_alpha capability (Glenn R-P -- suggestion by Jon Vincent)
+ Changed srgb_intent from png_byte to int to avoid compiler bugs
-version 0.99 [January 30, 1998]
- free info_ptr->text instead of end_info_ptr->text in pngread.c (John Bowler)
- fixed a longstanding "packswap" bug in pngtrans.c
- fixed some inconsistencies in pngconf.h that prevented compiling with
- PNG_READ_GAMMA_SUPPORTED and PNG_READ_hIST_SUPPORTED undefined
- fixed some typos and made other minor rearrangement of libpng.txt (Andreas)
- changed recommendation about file_gamma for PC images to .50 from .51 in
- example.c and libpng.txt, and changed file_gamma for sRGB images to .45
- added a number of functions to access information from the png structure
- png_get_image_height(), etc. (Glenn R-P, suggestion by Brad Pettit)
- added TARGET_MACOS similar to zlib-1.0.8
- define PNG_ALWAYS_EXTERN when __MWERKS__ && WIN32 are defined
- added type casting to all png_malloc() function calls
-version 0.99a [January 31, 1998]
+Version 0.99 [January 30, 1998]
+ Free info_ptr->text instead of end_info_ptr->text in pngread.c (John Bowler)
+ Fixed a longstanding "packswap" bug in pngtrans.c
+ Fixed some inconsistencies in pngconf.h that prevented compiling with
+ PNG_READ_GAMMA_SUPPORTED and PNG_READ_hIST_SUPPORTED undefined
+ Fixed some typos and made other minor rearrangement of libpng.txt (Andreas)
+ Changed recommendation about file_gamma for PC images to .50 from .51 in
+ example.c and libpng.txt, and changed file_gamma for sRGB images to .45
+ Added a number of functions to access information from the png structure
+ png_get_image_height(), etc. (Glenn R-P, suggestion by Brad Pettit)
+ Added TARGET_MACOS similar to zlib-1.0.8
+ Define PNG_ALWAYS_EXTERN when __MWERKS__ && WIN32 are defined
+ Added type casting to all png_malloc() function calls
+
+Version 0.99a [January 31, 1998]
Added type casts and parentheses to all returns that return a value.(Tim W.)
-version 0.99b [February 4, 1998]
+
+Version 0.99b [February 4, 1998]
Added type cast png_uint_32 on malloc function calls where needed.
Changed type of num_hist from png_uint_32 to int (same as num_palette).
Added checks for rowbytes overflow, in case png_size_t is less than 32 bits.
Renamed makefile.elf to makefile.lnx.
-version 0.99c [February 7, 1998]
+
+Version 0.99c [February 7, 1998]
More type casting. Removed erroneous overflow test in pngmem.c.
Added png_buffered_memcpy() and png_buffered_memset(), apply them to rowbytes.
Added UNIX manual pages libpng.3 (incorporating libpng.txt) and png.5.
-version 0.99d [February 11, 1998]
+
+Version 0.99d [February 11, 1998]
Renamed "far_to_near()" "png_far_to_near()"
Revised libpng.3
Version 99c "buffered" operations didn't work as intended. Replaced them
@@ -256,7 +261,8 @@
Check for overlength tRNS chunk present when indexed-color PLTE is read.
Cleaned up spelling errors in libpng.3/libpng.txt
Corrected a problem with png_get_tRNS() which returned undefined trans array
-version 0.99e [February 28, 1998]
+
+Version 0.99e [February 28, 1998]
Corrected png_get_tRNS() again.
Add parentheses for easier reading of pngget.c, fixed "||" should be "&&".
Touched up example.c to make more of it compileable, although the entire
@@ -266,53 +272,59 @@
Replaced pngtest.png with one created with zlib 1.1.1
Changed pngtest to report PASS even when file size is different (Jean-loup G.)
Corrected some logic errors in png_do_invert_alpha() (Chris Patterson)
-version 0.99f [March 5, 1998]
+
+Version 0.99f [March 5, 1998]
Corrected a bug in pngpread() introduced in version 99c (Kevin Bracey)
Moved makefiles into a "scripts" directory, and added INSTALL instruction file
Added makefile.os2 and pngos2.def (A. Zabolotny) and makefile.s2x (W. Sebok)
Added pointers to "note on libpng versions" in makefile.lnx and README
Added row callback feature when reading and writing nonprogressive rows
- and added a test of this feature in pngtest.c
+ and added a test of this feature in pngtest.c
Added user transform callbacks, with test of the feature in pngtest.c
-version 0.99g [March 6, 1998, morning]
+
+Version 0.99g [March 6, 1998, morning]
Minor changes to pngtest.c to suppress compiler warnings.
Removed "beta" language from documentation.
-version 0.99h [March 6, 1998, evening]
+
+Version 0.99h [March 6, 1998, evening]
Minor changes to previous minor changes to pngtest.c
Changed PNG_READ_NOT_FULLY_SUPPORTED to PNG_READ_TRANSFORMS_NOT_SUPPORTED
- and added PNG_PROGRESSIVE_READ_NOT_SUPPORTED macro
+ and added PNG_PROGRESSIVE_READ_NOT_SUPPORTED macro
Added user transform capability
-version 1.00 [March 7, 1998]
+Version 1.00 [March 7, 1998]
Changed several typedefs in pngrutil.c
Added makefile.wat (Pawel Mrochen), updated makefile.tc3 (Willem van Schaik)
- replaced "while(1)" with "for(;;)"
- added PNGARG() to prototypes in pngtest.c and removed some prototypes
- updated some of the makefiles (Tom Lane)
- changed some typedefs (s_start, etc.) in pngrutil.c
- fixed dimensions of "short_months" array in pngwrite.c
+ Replaced "while(1)" with "for(;;)"
+ Added PNGARG() to prototypes in pngtest.c and removed some prototypes
+ Updated some of the makefiles (Tom Lane)
+ Changed some typedefs (s_start, etc.) in pngrutil.c
+ Fixed dimensions of "short_months" array in pngwrite.c
Replaced ansi2knr.c with the one from jpeg-v6
-version 1.0.0 [March 8, 1998]
+Version 1.0.0 [March 8, 1998]
Changed name from 1.00 to 1.0.0 (Adam Costello)
Added smakefile.ppc (with SCOPTIONS.ppc) for Amiga PPC (Andreas Kleinert)
-version 1.0.0a [March 9, 1998]
+
+Version 1.0.0a [March 9, 1998]
Fixed three bugs in pngrtran.c to make gamma+background handling consistent
- (Greg Roelofs)
+ (Greg Roelofs)
Changed format of the PNG_LIBPNG_VER integer to xyyzz instead of xyz
- for major, minor, and bugfix releases. This is 10001. (Adam Costello,
- Tom Lane)
+ for major, minor, and bugfix releases. This is 10001. (Adam Costello,
+ Tom Lane)
Make months range from 1-12 in png_convert_to_rfc1123
-version 1.0.0b [March 13, 1998]
+
+Version 1.0.0b [March 13, 1998]
Quieted compiler complaints about two empty "for" loops in pngrutil.c
Minor changes to makefile.s2x
Removed #ifdef/#endif around a png_free() in pngread.c
-version 1.0.1 [March 14, 1998]
+Version 1.0.1 [March 14, 1998]
Changed makefile.s2x to reduce security risk of using a relative pathname
Fixed some typos in the documentation (Greg).
Fixed a problem with value of "channels" returned by png_read_update_info()
-version 1.0.1a [April 21, 1998]
+
+Version 1.0.1a [April 21, 1998]
Optimized Paeth calculations by replacing abs() function calls with intrinsics
plus other loop optimizations. Improves avg decoding speed by about 20%.
Commented out i386istic "align" compiler flags in makefile.lnx.
@@ -326,19 +338,24 @@
Moved a misplaced pngrutil code block that truncates tRNS if it has more
than num_palette entries -- test was done before num_palette was defined.
Fixed a png_convert_to_rfc1123() bug that converts day 31 to 0 (Steve Eddins).
- Changed compiler flags in makefile.wat for better optimization (Pawel Mrochen).
-version 1.0.1b [May 2, 1998]
+ Changed compiler flags in makefile.wat for better optimization
+ (Pawel Mrochen).
+
+Version 1.0.1b [May 2, 1998]
Relocated png_do_gray_to_rgb() within png_do_read_transformations() (Greg).
Relocated the png_composite macros from pngrtran.c to png.h (Greg).
Added makefile.sco (contributed by Mike Hopkirk).
Fixed two bugs (missing definitions of "istop") introduced in libpng-1.0.1a.
Fixed a bug in pngrtran.c that would set channels=5 under some circumstances.
- More work on the Paeth-filtering, achieving imperceptible speedup (A Kleinert).
- More work on loop optimization which may help when compiled with C++ compilers.
+ More work on the Paeth-filtering, achieving imperceptible speedup
+ (A Kleinert).
+ More work on loop optimization which may help when compiled with C++
+ compilers.
Added warnings when people try to use transforms they've defined out.
Collapsed 4 "i" and "c" loops into single "i" loops in pngrtran and pngwtran.
Revised paragraph about png_set_expand() in libpng.txt and libpng.3 (Greg)
-version 1.0.1c [May 11, 1998]
+
+Version 1.0.1c [May 11, 1998]
Fixed a bug in pngrtran.c (introduced in libpng-1.0.1a) where the masks for
filler bytes should have been 0xff instead of 0xf.
Added max_pixel_depth=32 in pngrutil.c when using FILLER with palette images.
@@ -350,7 +367,8 @@
to remove unwanted capabilities via the compile line
Made some corrections to grammar (which, it's) in documentation (Greg).
Corrected example.c, use of row_pointers in png_write_image().
-version 1.0.1d [May 24, 1998]
+
+Version 1.0.1d [May 24, 1998]
Corrected several statements that used side effects illegally in pngrutil.c
and pngtrans.c, that were introduced in version 1.0.1b
Revised png_read_rows() to avoid repeated if-testing for NULL (A Kleinert)
@@ -360,7 +378,8 @@
Bob Dellaca, to make a png32bd.dll with Borland C++ 4.5
Fixed error in example.c with png_set_text: num_text is 3, not 2 (Guido V.)
Changed several loops from count-down to count-up, for consistency.
-version 1.0.1e [June 6, 1998]
+
+Version 1.0.1e [June 6, 1998]
Revised libpng.txt and libpng.3 description of png_set_read|write_fn(), and
added warnings when people try to set png_read_fn and png_write_fn in
the same structure.
@@ -377,9 +396,10 @@
PNGTEST_DEBUG_MEM feature.
Added makefile.w32, for Microsoft C++ 4.0 and later (Tim Wegner).
-version 1.0.2 [June 14, 1998]
+Version 1.0.2 [June 14, 1998]
Fixed two bugs in makefile.bor .
-version 1.0.2a [December 30, 1998]
+
+Version 1.0.2a [December 30, 1998]
Replaced and extended code that was removed from png_set_filler() in 1.0.1a.
Fixed a bug in png_do_filler() that made it fail to write filler bytes in
the left-most pixel of each row (Kevin Bracey).
@@ -401,21 +421,24 @@
Added png_get_copyright() and png_get_header_version() functions.
Revised comments on png_set_progressive_read_fn() in libpng.txt and example.c
Added information about debugging in libpng.txt and libpng.3 .
- Changed "ln -sf" to "ln -s -f" in makefile.s2x, makefile.lnx, and makefile.sco.
+ Changed "ln -sf" to "ln -s -f" in makefile.s2x, makefile.lnx, and
+ makefile.sco.
Removed lines after Dynamic Dependencies" in makefile.aco .
Revised makefile.dec to make a shared library (Jeremie Petit).
Removed trailing blanks from all files.
-version 1.0.2a [January 6, 1999]
+
+Version 1.0.2a [January 6, 1999]
Removed misplaced #endif and #ifdef PNG_NO_EXTERN near the end of png.h
Added "if" tests to silence complaints about unused png_ptr in png.h and png.c
Changed "check_if_png" function in example.c to return true (nonzero) if PNG.
Changed libpng.txt to demonstrate png_sig_cmp() instead of png_check_sig()
which is obsolete.
-version 1.0.3 [January 14, 1999]
+Version 1.0.3 [January 14, 1999]
Added makefile.hux, for Hewlett Packard HPUX 10.20 and 11.00 (Jim Rice)
Added a statement of Y2K compliance in png.h, libpng.3, and Y2KINFO.
-version 1.0.3a [August 12, 1999]
+
+Version 1.0.3a [August 12, 1999]
Added check for PNG_READ_INTERLACE_SUPPORTED in pngread.c; issue a warning
if an attempt is made to read an interlaced image when it's not supported.
Added check if png_ptr->trans is defined before freeing it in pngread.c
@@ -442,13 +465,15 @@
Correct gamma with srgb is 45455 instead of 45000 in pngrutil.c, to be
consistent with PNG-1.2, and allow variance of 500 before complaining.
Added assembler code contributed by Intel in file pngvcrd.c and modified
- makefile.w32 to use it (Nirav Chhatrapati, INTEL Corporation, Gilles Vollant)
+ makefile.w32 to use it (Nirav Chhatrapati, INTEL Corporation,
+ Gilles Vollant)
Changed "ln -s -f" to "ln -f -s" in the makefiles to make Solaris happy.
Added some aliases for png_set_expand() in pngrtran.c, namely
png_set_expand_PLTE(), png_set_expand_depth(), and png_set_expand_tRNS()
(Greg Roelofs, in "PNG: The Definitive Guide").
Added makefile.beo for BEOS on X86, contributed by Sander Stok.
-version 1.0.3b [August 26, 1999]
+
+Version 1.0.3b [August 26, 1999]
Replaced 2147483647L several places with PNG_MAX_UINT macro, defined in png.h
Changed leading blanks to tabs in all makefiles.
Define PNG_USE_PNGVCRD in makefile.w32, to get MMX assembler code.
@@ -460,12 +485,13 @@
negative shift distance, whose results are undefined in the C language.
Added a check in pngset.c to prevent writing multiple tIME chunks.
Added a check in pngwrite.c to detect invalid small window_bits sizes.
-version 1.0.3d [September 4, 1999]
+
+Version 1.0.3d [September 4, 1999]
Fixed type casting of igamma in pngrutil.c
Added new png_expand functions to scripts/pngdef.pas and pngos2.def
Added a demo read_user_transform_fn that examines the row filters in pngtest.c
-version 1.0.4 [September 24, 1999]
+Version 1.0.4 [September 24, 1999]
Define PNG_ALWAYS_EXTERN in pngconf.h if __STDC__ is defined
Delete #define PNG_INTERNAL and include "png.h" from pngasmrd.h
Made several minor corrections to pngtest.c
@@ -479,24 +505,30 @@
assembler code) and makefile.vcwin32 (doesn't).
Added a CPU timing report to pngtest.c (enabled by defining PNGTEST_TIMING)
Added a copy of pngnow.png to the distribution.
-version 1.0.4a [September 25, 1999]
+
+Version 1.0.4a [September 25, 1999]
Increase max_pixel_depth in pngrutil.c if a user transform needs it.
Changed several division operations to right-shifts in pngvcrd.c
-version 1.0.4b [September 30, 1999]
+
+Version 1.0.4b [September 30, 1999]
Added parentheses in line 3732 of pngvcrd.c
Added a comment in makefile.linux warning about buggy -O3 in pgcc 2.95.1
-version 1.0.4c [October 1, 1999]
+
+Version 1.0.4c [October 1, 1999]
Added a "png_check_version" function in png.c and pngtest.c that will generate
a helpful compiler error if an old png.h is found in the search path.
Changed type of png_user_transform_depth|channels from int to png_byte.
-version 1.0.4d [October 6, 1999]
+
+Version 1.0.4d [October 6, 1999]
Changed 0.45 to 0.45455 in png_set_sRGB()
Removed unused PLTE entries from pngnow.png
Re-enabled some parts of pngvcrd.c (png_combine_row) that work properly.
-version 1.0.4e [October 10, 1999]
+
+Version 1.0.4e [October 10, 1999]
Fixed sign error in pngvcrd.c (Greg Roelofs)
Replaced some instances of memcpy with simple assignments in pngvcrd (GR-P)
-version 1.0.4f [October 15, 1999]
+
+Version 1.0.4f [October 15, 1999]
Surrounded example.c code with #if 0 .. #endif to prevent people from
inadvertently trying to compile it.
Changed png_get_header_version() from a function to a macro in png.h
@@ -504,9 +536,10 @@
Removed some pointless "ptr = NULL" in pngmem.c
Added a "contrib" directory containing the source code from Greg's book.
-version 1.0.5 [October 15, 1999]
+Version 1.0.5 [October 15, 1999]
Minor editing of the INSTALL and README files.
-version 1.0.5a [October 23, 1999]
+
+Version 1.0.5a [October 23, 1999]
Added contrib/pngsuite and contrib/pngminus (Willem van Schaik)
Fixed a typo in the png_set_sRGB() function call in example.c (Jan Nijtmans)
Further optimization and bugfix of pngvcrd.c
@@ -514,14 +547,16 @@
text_ptr structure. Instead, it makes its own copy.
Created separate write_end_info_struct in pngtest.c for a more severe test.
Added code in pngwrite.c to free info_ptr->text[i].key to stop a memory leak.
-version 1.0.5b [November 23, 1999]
+
+Version 1.0.5b [November 23, 1999]
Moved PNG_FLAG_HAVE_CHUNK_HEADER, PNG_FLAG_BACKGROUND_IS_GRAY and
PNG_FLAG_WROTE_tIME from flags to mode.
Added png_write_info_before_PLTE() function.
Fixed some typecasting in contrib/gregbook/*.c
Updated scripts/makevms.com and added makevms.com to contrib/gregbook
and contrib/pngminus (Martin Zinser)
-version 1.0.5c [November 26, 1999]
+
+Version 1.0.5c [November 26, 1999]
Moved png_get_header_version from png.h to png.c, to accommodate ansi2knr.
Removed all global arrays (according to PNG_NO_GLOBAL_ARRAYS macro), to
accommodate making DLL's: Moved usr_png_ver from global variable to function
@@ -534,7 +569,8 @@
Removed some extraneous "-I" from contrib/pngminus/makefile.std
Changed the PNG_sRGB_INTENT macros in png.h to be consistent with PNG-1.2.
Change PNG_SRGB_INTENT to PNG_sRGB_INTENT in libpng.txt and libpng.3
-version 1.0.5d [November 29, 1999]
+
+Version 1.0.5d [November 29, 1999]
Add type cast (png_const_charp) two places in png.c
Eliminated pngtypes.h; use macros instead to declare PNG_CHNK arrays.
Renamed "PNG_GLOBAL_ARRAYS" to "PNG_USE_GLOBAL_ARRAYS" and made available
@@ -542,7 +578,8 @@
comment out (with #ifdef) all the new declarations when
PNG_USE_GLOBAL_ARRAYS is defined.
Added PNG_EXPORT_VAR macro to accommodate making DLL's.
-version 1.0.5e [November 30, 1999]
+
+Version 1.0.5e [November 30, 1999]
Added iCCP, iTXt, and sPLT support; added "lang" member to the png_text
structure; refactored the inflate/deflate support to make adding new chunks
with trailing compressed parts easier in the future, and added new functions
@@ -563,18 +600,21 @@
PNG_cHNK_SUPPORTED and combined the three types of PNG_text_SUPPORTED
macros, leaving the separate macros also available.
Removed comments on #endifs at the end of many short, non-nested #if-blocks.
-version 1.0.5f [December 6, 1999]
+
+Version 1.0.5f [December 6, 1999]
Changed makefile.solaris to issue a warning about potential problems when
the ucb "ld" is in the path ahead of the ccs "ld".
Removed "- [date]" from the "synopsis" line in libpng.3 and libpngpf.3.
Added sCAL chunk support (Eric S. Raymond).
-version 1.0.5g [December 7, 1999]
+
+Version 1.0.5g [December 7, 1999]
Fixed "png_free_spallettes" typo in png.h
Added code to handle new chunks in pngpread.c
Moved PNG_CHNK string macro definitions outside of PNG_NO_EXTERN block
Added "translated_key" to png_text structure and png_write_iTXt().
Added code in pngwrite.c to work around a newly discovered zlib bug.
-version 1.0.5h [December 10, 1999]
+
+Version 1.0.5h [December 10, 1999]
NOTE: regarding the note for version 1.0.5e, the following must also
be included in your code:
png_text[i].translated_key = NULL;
@@ -582,7 +622,8 @@
Option to eliminate all floating point support was added. Some new
fixed-point functions such as png_set_gAMA_fixed() were added.
Expanded tabs and removed trailing blanks in source files.
-version 1.0.5i [December 13, 1999]
+
+Version 1.0.5i [December 13, 1999]
Added some type casts to silence compiler warnings.
Renamed "png_free_spalette" to "png_free_spalettes" for consistency.
Removed leading blanks from a #define in pngvcrd.c
@@ -594,7 +635,8 @@
Added png_free_hIST() function.
Various patches to fix bugs in the sCAL and integer cHRM processing,
and to add some convenience macros for use with sCAL.
-version 1.0.5j [December 21, 1999]
+
+Version 1.0.5j [December 21, 1999]
Changed "unit" parameter of png_write_sCAL from png_byte to int, to work
around buggy compilers.
Added new type "png_fixed_point" for integers that hold float*100000 values
@@ -610,7 +652,8 @@
and to write the iTXt chunk after IDAT if it appears in the end_ptr.
Added pnggccrd.c, version of pngvcrd.c Intel assembler for gcc (Greg Roelofs)
Reversed the order of trying to write floating-point and fixed-point gAMA.
-version 1.0.5k [December 27, 1999]
+
+Version 1.0.5k [December 27, 1999]
Added many parentheses, e.g., "if (a && b & c)" becomes "if (a && (b & c))"
Added png_handle_as_unknown() function (Glenn)
Added png_free_chunk_list() function and chunk_list and num_chunk_list members
@@ -621,33 +664,41 @@
Added png_free_tRNS(); png_set_tRNS() now malloc's its own trans array (ESR).
Define png_get_int_32 when oFFs chunk is supported as well as when pCAL is.
Changed type of proflen from png_int_32 to png_uint_32 in png_get_iCCP().
-version 1.0.5l [January 1, 2000]
+
+Version 1.0.5l [January 1, 2000]
Added functions png_set_read_user_chunk_fn() and png_get_user_chunk_ptr()
for setting a callback function to handle unknown chunks and for
retrieving the associated user pointer (Glenn).
-version 1.0.5m [January 7, 2000]
+
+Version 1.0.5m [January 7, 2000]
Added high-level functions png_read_png(), png_write_png(), png_free_pixels().
-version 1.0.5n [January 9, 2000]
+
+Version 1.0.5n [January 9, 2000]
Added png_free_PLTE() function, and modified png_set_PLTE() to malloc its
own memory for info_ptr->palette. This makes it safe for the calling
application to free its copy of the palette any time after it calls
png_set_PLTE().
-version 1.0.5o [January 20, 2000]
+
+Version 1.0.5o [January 20, 2000]
Cosmetic changes only (removed some trailing blanks and TABs)
-version 1.0.5p [January 31, 2000]
+
+Version 1.0.5p [January 31, 2000]
Renamed pngdll.mak to makefile.bd32
Cosmetic changes in pngtest.c
-version 1.0.5q [February 5, 2000]
+
+Version 1.0.5q [February 5, 2000]
Relocated the makefile.solaris warning about PATH problems.
Fixed pngvcrd.c bug by pushing/popping registers in mmxsupport (Bruce Oberg)
Revised makefile.gcmmx
Added PNG_SETJMP_SUPPORTED, PNG_SETJMP_NOT_SUPPORTED, and PNG_ABORT() macros
-version 1.0.5r [February 7, 2000]
+
+Version 1.0.5r [February 7, 2000]
Removed superfluous prototype for png_get_itxt from png.h
Fixed a bug in pngrtran.c that improperly expanded the background color.
Return *num_text=0 from png_get_text() when appropriate, and fix documentation
of png_get_text() in libpng.txt/libpng.3.
-version 1.0.5s [February 18, 2000]
+
+Version 1.0.5s [February 18, 2000]
Added "png_jmp_env()" macro to pngconf.h, to help people migrate to the
new error handler that's planned for the next libpng release, and changed
example.c, pngtest.c, and contrib programs to use this macro.
@@ -666,7 +717,8 @@
Added png_set_rows() and png_get_rows(), for use with png_read|write_png().
Modified png_read_png() to allocate info_ptr->row_pointers only if it
hasn't already been allocated.
-version 1.0.5t [March 4, 2000]
+
+Version 1.0.5t [March 4, 2000]
Changed png_jmp_env() migration aiding macro to png_jmpbuf().
Fixed "interlace" typo (should be "interlaced") in contrib/gregbook/read2-x.c
Fixed bug with use of PNG_BEFORE_IHDR bit in png_ptr->mode, introduced when
@@ -675,13 +727,15 @@
a 24-bit visual if one is available, and to allow abbreviated options.
Files in contrib/pngminus were revised to use the png_jmpbuf() macro.
Removed spaces in makefile.linux and makefile.gcmmx, introduced in 1.0.5s
-version 1.0.5u [March 5, 2000]
+
+Version 1.0.5u [March 5, 2000]
Simplified the code that detects old png.h in png.c and pngtest.c
Renamed png_spalette (_p, _pp) to png_sPLT_t (_tp, _tpp)
Increased precision of rgb_to_gray calculations from 8 to 15 bits and
added png_set_rgb_to_gray_fixed() function.
Added makefile.bc32 (32-bit Borland C++, C mode)
-version 1.0.5v [March 11, 2000]
+
+Version 1.0.5v [March 11, 2000]
Added some parentheses to the png_jmpbuf macro definition.
Updated references to the zlib home page, which has moved to freesoftware.com.
Corrected bugs in documentation regarding png_read_row() and png_write_row().
@@ -689,10 +743,11 @@
Renamed makefile.borland,turboc3 back to makefile.bor,tc3 as in version 1.0.3,
revised borland makefiles; added makefile.ibmvac3 and makefile.gcc (Cosmin)
-version 1.0.6 [March 20, 2000]
+Version 1.0.6 [March 20, 2000]
Minor revisions of makefile.bor, libpng.txt, and gregbook/rpng2-win.c
Added makefile.sggcc (SGI IRIX with gcc)
-version 1.0.6d [April 7, 2000]
+
+Version 1.0.6d [April 7, 2000]
Changed sprintf() to strcpy() in png_write_sCAL_s() to work without STDIO
Added data_length parameter to png_decompress_chunk() function
Revised documentation to remove reference to abandoned png_free_chnk functions
@@ -701,7 +756,8 @@
Renamed makefile.ibmvac3 to makefile.ibmc, added libpng.icc IBM project file
Added a check for info_ptr->free_me&PNG_FREE_TEXT when freeing text in png.c
Simplify png_sig_bytes() function to remove use of non-ISO-C strdup().
-version 1.0.6e [April 9, 2000]
+
+Version 1.0.6e [April 9, 2000]
Added png_data_freer() function.
In the code that checks for over-length tRNS chunks, added check of
info_ptr->num_trans as well as png_ptr->num_trans (Matthias Benckmann)
@@ -712,25 +768,29 @@
is defined.
Changed several instances of PNG_NO_CONSOLE_ID to PNG_NO_STDIO in pngrutil.c
and mentioned the purposes of the two macros in libpng.txt/libpng.3.
-version 1.0.6f [April 14, 2000]
+
+Version 1.0.6f [April 14, 2000]
Revised png_set_iCCP() and png_set_rows() to avoid prematurely freeing data.
Add checks in png_set_text() for NULL members of the input text structure.
Revised libpng.txt/libpng.3.
- Removed superfluous prototype for png_set_itxt from png.h
+ Removed superfluous prototype for png_set_iTXt from png.h
Removed "else" from pngread.c, after png_error(), and changed "0" to "length".
Changed several png_errors about malformed ancillary chunks to png_warnings.
-version 1.0.6g [April 24, 2000]
+
+Version 1.0.6g [April 24, 2000]
Added png_pass-* arrays to pnggccrd.c when PNG_USE_LOCAL_ARRAYS is defined.
Relocated paragraph about png_set_background() in libpng.3/libpng.txt
and other revisions (Matthias Benckmann)
Relocated info_ptr->free_me, png_ptr->free_me, and other info_ptr and
png_ptr members to restore binary compatibility with libpng-1.0.5
(breaks compatibility with libpng-1.0.6).
-version 1.0.6h [April 24, 2000]
+
+Version 1.0.6h [April 24, 2000]
Changed shared library so-number pattern from 2.x.y.z to xy.z (this builds
libpng.so.10 & libpng.so.10.6h instead of libpng.so.2 & libpng.so.2.1.0.6h)
This is a temporary change for test purposes.
-version 1.0.6i [May 2, 2000]
+
+Version 1.0.6i [May 2, 2000]
Rearranged some members at the end of png_info and png_struct, to put
unknown_chunks_num and free_me within the original size of the png_structs
and free_me, png_read_user_fn, and png_free_fn within the original png_info,
@@ -755,11 +815,13 @@
generate a libpng error if the modes aren't set and PNG_LEGACY_SUPPORTED
was not defined.
Added makefile.intel and updated makefile.watcom (Pawel Mrochen)
-version 1.0.6j [May 3, 2000]
+
+Version 1.0.6j [May 3, 2000]
Overloaded png_read_init() and png_write_init() with macros that convert
calls to png_read_init_2() or png_write_init_2() that check the version
and structure sizes.
-version 1.0.7beta11 [May 7, 2000]
+
+Version 1.0.7beta11 [May 7, 2000]
Removed the new PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT modes
which are no longer used.
Eliminated the three new members of png_text when PNG_LEGACY_SUPPORTED is
@@ -770,7 +832,8 @@
Added PNGAPI macro, and added it to the definitions of all exported functions.
Relocated version macro definitions ahead of the includes of zlib.h and
pngconf.h in png.h.
-version 1.0.7beta12 [May 12, 2000]
+
+Version 1.0.7beta12 [May 12, 2000]
Revised pngset.c to avoid a problem with expanding the png_debug macro.
Deleted some extraneous defines from pngconf.h
Made PNG_NO_CONSOLE_IO the default condition when PNG_BUILD_DLL is defined.
@@ -778,7 +841,8 @@
Added png_access_version_number() function.
Check for mask&PNG_FREE_CHNK (for TEXT, SCAL, PCAL) in png_free_data().
Expanded libpng.3/libpng.txt information about png_data_freer().
-version 1.0.7beta14 [May 17, 2000] (beta13 was not published)
+
+Version 1.0.7beta14 [May 17, 2000] (beta13 was not published)
Changed pnggccrd.c and pngvcrd.c to handle bad adaptive filter types as
warnings instead of errors, as pngrutil.c does.
Set the PNG_INFO_IDAT valid flag in png_set_rows() so png_write_png()
@@ -790,7 +854,8 @@
Removed info_ptr->valid tests from png_free_data(), as in version 1.0.5.
Added png_set_invalid() function.
Fixed incorrect illustrations of png_destroy_write_struct() in example.c.
-version 1.0.7beta15 [May 30, 2000]
+
+Version 1.0.7beta15 [May 30, 2000]
Revised the deliberately erroneous Linux setjmp code in pngconf.h to produce
fewer error messages.
Rearranged checks for Z_OK to check the most likely path first in pngpread.c
@@ -802,9 +867,11 @@
Fixed some bugs in the unused PNG_INCH_CONVERSIONS functions in pngget.c
Set each pointer to NULL after freeing it in png_free_data().
Worked around a problem in pngconf.h; AIX's strings.h defines an "index"
- macro that conflicts with libpng's png_color_16.index. (Dimitri Papadapoulos)
+ macro that conflicts with libpng's png_color_16.index. (Dimitri
+ Papadapoulos)
Added "msvc" directory with MSVC++ project files (Simon-Pierre Cadieux).
-version 1.0.7beta16 [June 4, 2000]
+
+Version 1.0.7beta16 [June 4, 2000]
Revised the workaround of AIX string.h "index" bug.
Added a check for overlength PLTE chunk in pngrutil.c.
Added PNG_NO_POINTER_INDEXING macro to use array-indexing instead of pointer
@@ -814,23 +881,27 @@
Added PNG_USE_DLL macro.
Revised the copyright/disclaimer/license notice.
Added contrib/msvctest directory
-version 1.0.7rc1 [June 9, 2000]
+
+Version 1.0.7rc1 [June 9, 2000]
Corrected the definition of PNG_TRANSFORM_INVERT_ALPHA (0x0400 not 0x0200)
Added contrib/visupng directory (Willem van Schaik)
-version 1.0.7beta18 [June 23, 2000]
+
+Version 1.0.7beta18 [June 23, 2000]
Revised PNGAPI definition, and pngvcrd.c to work with __GCC__
and do not redefine PNGAPI if it is passed in via a compiler directive.
Revised visupng/PngFile.c to remove returns from within the Try block.
Removed leading underscores from "_PNG_H" and "_PNG_SAVE_BSD_SOURCE" macros.
Updated contrib/visupng/cexcept.h to version 1.0.0.
Fixed bugs in pngwrite.c and pngwutil.c that prevented writing iCCP chunks.
-version 1.0.7rc2 [June 28, 2000]
+
+Version 1.0.7rc2 [June 28, 2000]
Updated license to include disclaimers required by UCITA.
Fixed "DJBPP" typo in pnggccrd.c introduced in beta18.
-version 1.0.7 [July 1, 2000]
+Version 1.0.7 [July 1, 2000]
Revised the definition of "trans_values" in libpng.3/libpng.txt
-version 1.0.8beta1 [July 8, 2000]
+
+Version 1.0.8beta1 [July 8, 2000]
Added png_free(png_ptr, key) two places in pngpread.c to stop memory leaks.
Changed PNG_NO_STDIO to PNG_NO_CONSOLE_IO, several places in pngrutil.c and
pngwutil.c.
@@ -838,25 +909,30 @@
Removed unused "#include <assert.h>" from png.c
Added WindowsCE support.
Revised pnggccrd.c to work with gcc-2.95.2 and in the Cygwin environment.
-version 1.0.8beta2 [July 10, 2000]
+
+Version 1.0.8beta2 [July 10, 2000]
Added project files to the wince directory and made further revisions
of pngtest.c, pngrio.c, and pngwio.c in support of WindowsCE.
-version 1.0.8beta3 [July 11, 2000]
+
+Version 1.0.8beta3 [July 11, 2000]
Only set the PNG_FLAG_FREE_TRNS or PNG_FREE_TRNS flag in png_handle_tRNS()
for indexed-color input files to avoid potential double-freeing trans array
under some unusual conditions; problem was introduced in version 1.0.6f.
Further revisions to pngtest.c and files in the wince subdirectory.
-version 1.0.8beta4 [July 14, 2000]
+
+Version 1.0.8beta4 [July 14, 2000]
Added the files pngbar.png and pngbar.jpg to the distribution.
Added makefile.cygwin, and cygwin support in pngconf.h
Added PNG_NO_ZALLOC_ZERO macro (makes png_zalloc skip zeroing memory)
-version 1.0.8rc1 [July 16, 2000]
+
+Version 1.0.8rc1 [July 16, 2000]
Revised png_debug() macros and statements to eliminate compiler warnings.
-version 1.0.8 [July 24, 2000]
+Version 1.0.8 [July 24, 2000]
Added png_flush() in pngwrite.c, after png_write_IEND().
Updated makefile.hpux to build a shared library.
-version 1.0.9beta1 [November 10, 2000]
+
+Version 1.0.9beta1 [November 10, 2000]
Fixed typo in scripts/makefile.hpux
Updated makevms.com in scripts and contrib/* and contrib/* (Martin Zinser)
Fixed seqence-point bug in contrib/pngminus/png2pnm (Martin Zinser)
@@ -875,59 +951,72 @@
Revised makefile.cygwin
Fixed bugs in iCCP support in pngrutil.c and pngwutil.c.
Replaced png_set_empty_plte_permitted() with png_permit_mng_features().
-version 1.0.9beta2 [November 19, 2000]
+
+Version 1.0.9beta2 [November 19, 2000]
Renamed the "dll" subdirectory "projects".
Added borland project files to "projects" subdirectory.
Set VS_FF_PRERELEASE and VS_FF_PATCHED flags in msvc/png.rc when appropriate.
Add error message in png_set_compression_buffer_size() when malloc fails.
-version 1.0.9beta3 [November 23, 2000]
+
+Version 1.0.9beta3 [November 23, 2000]
Revised PNG_LIBPNG_BUILD_TYPE macro in png.h, used in the msvc project.
Removed the png_flush() in pngwrite.c that crashes some applications
that don't set png_output_flush_fn.
Added makefile.macosx and makefile.aix to scripts directory.
-version 1.0.9beta4 [December 1, 2000]
+
+Version 1.0.9beta4 [December 1, 2000]
Change png_chunk_warning to png_warning in png_check_keyword().
Increased the first part of msg buffer from 16 to 18 in png_chunk_error().
-version 1.0.9beta5 [December 15, 2000]
+
+Version 1.0.9beta5 [December 15, 2000]
Added support for filter method 64 (for PNG datastreams embedded in MNG).
-version 1.0.9beta6 [December 18, 2000]
+
+Version 1.0.9beta6 [December 18, 2000]
Revised png_set_filter() to accept filter method 64 when appropriate.
Added new PNG_HAVE_PNG_SIGNATURE bit to png_ptr->mode and use it to
help prevent applications from using MNG features in PNG datastreams.
Added png_permit_mng_features() function.
Revised libpng.3/libpng.txt. Changed "filter type" to "filter method".
-version 1.0.9rc1 [December 23, 2000]
+
+Version 1.0.9rc1 [December 23, 2000]
Revised test for PNG_HAVE_PNG_SIGNATURE in pngrutil.c
Fixed error handling of unknown compression type in png_decompress_chunk().
In pngconf.h, define __cdecl when _MSC_VER is defined.
-version 1.0.9beta7 [December 28, 2000]
+
+Version 1.0.9beta7 [December 28, 2000]
Changed PNG_TEXT_COMPRESSION_zTXt to PNG_COMPRESSION_TYPE_BASE several places.
Revised memory management in png_set_hIST and png_handle_hIST in a backward
compatible manner. PLTE and tRNS were revised similarly.
Revised the iCCP chunk reader to ignore trailing garbage.
-version 1.0.9beta8 [January 12, 2001]
+
+Version 1.0.9beta8 [January 12, 2001]
Moved pngasmrd.h into pngconf.h.
Improved handling of out-of-spec garbage iCCP chunks generated by PhotoShop.
-version 1.0.9beta9 [January 15, 2001]
+
+Version 1.0.9beta9 [January 15, 2001]
Added png_set_invalid, png_permit_mng_features, and png_mmx_supported to
wince and msvc project module definition files.
Minor revision of makefile.cygwin.
Fixed bug with progressive reading of narrow interlaced images in pngpread.c
-version 1.0.9beta10 [January 16, 2001]
+
+Version 1.0.9beta10 [January 16, 2001]
Do not typedef png_FILE_p in pngconf.h when PNG_NO_STDIO is defined.
Fixed "png_mmx_supported" typo in project definition files.
-version 1.0.9beta11 [January 19, 2001]
+
+Version 1.0.9beta11 [January 19, 2001]
Updated makefile.sgi to make shared library.
Removed png_mmx_support() function and disabled PNG_MNG_FEATURES_SUPPORTED
by default, for the benefit of DLL forward compatibility. These will
be re-enabled in version 1.2.0.
-version 1.0.9rc2 [January 22, 2001]
+
+Version 1.0.9rc2 [January 22, 2001]
Revised cygwin support.
-version 1.0.9 [January 31, 2001]
+Version 1.0.9 [January 31, 2001]
Added check of cygwin's ALL_STATIC in pngconf.h
Added "-nommx" parameter to contrib/gregbook/rpng2-win and rpng2-x demos.
-version 1.0.10beta1 [March 14, 2001]
+
+Version 1.0.10beta1 [March 14, 2001]
Revised makefile.dec, makefile.sgi, and makefile.sggcc; added makefile.hpgcc.
Reformatted libpng.3 to eliminate bad line breaks.
Added checks for _mmx_supported in the read_filter_row function of pnggccrd.c
@@ -940,33 +1029,39 @@
Fixed bugs in png_combine_row() in pnggccrd.c and pngvcrd.c (C version)
Added warnings when retrieving or setting gamma=0.
Increased the first part of msg buffer from 16 to 18 in png_chunk_warning().
-version 1.0.10rc1 [March 23, 2001]
+
+Version 1.0.10rc1 [March 23, 2001]
Changed all instances of memcpy, strcpy, and strlen to png_memcpy, png_strcpy,
and png_strlen.
Revised png_mmx_supported() function in pnggccrd.c to return proper value.
Fixed bug in progressive reading (pngpread.c) with small images (height < 8).
-version 1.0.10 [March 30, 2001]
+Version 1.0.10 [March 30, 2001]
Deleted extraneous space (introduced in 1.0.9) from line 42 of makefile.cygwin
Added beos project files (Chris Herborth)
-version 1.0.11beta1 [April 3, 2001]
+
+Version 1.0.11beta1 [April 3, 2001]
Added type casts on several png_malloc() calls (Dimitri Papadapoulos).
Removed a no-longer needed AIX work-around from pngconf.h
Changed several "//" single-line comments to C-style in pnggccrd.c
-version 1.0.11beta2 [April 11, 2001]
+
+Version 1.0.11beta2 [April 11, 2001]
Removed PNGAPI from several functions whose prototypes did not have PNGAPI.
Updated scripts/pngos2.def
-version 1.0.11beta3 [April 14, 2001]
+
+Version 1.0.11beta3 [April 14, 2001]
Added checking the results of many instances of png_malloc() for NULL
-version 1.0.11beta4 [April 20, 2001]
+
+Version 1.0.11beta4 [April 20, 2001]
Undid the changes from version 1.0.11beta3. Added a check for NULL return
from user's malloc_fn().
Removed some useless type casts of the NULL pointer.
Added makefile.netbsd
-version 1.0.11 [April 27, 2001]
+Version 1.0.11 [April 27, 2001]
Revised makefile.netbsd
-version 1.0.12beta1 [May 14, 2001]
+
+Version 1.0.12beta1 [May 14, 2001]
Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot)
Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h
Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings.
@@ -974,21 +1069,25 @@
libpng will reallocate the png_struct and info_struct if they are too small.
This retains future binary compatibility for old applications written for
libpng-0.88 and earlier.
-version 1.2.0beta1 [May 6, 2001]
+
+Version 1.2.0beta1 [May 6, 2001]
Bumped DLLNUM to 2.
Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
by default.
Added runtime selection of MMX features.
Added png_set_strip_error_numbers function and related macros.
-version 1.2.0beta2 [May 7, 2001]
+
+Version 1.2.0beta2 [May 7, 2001]
Finished merging 1.2.0beta1 with version 1.0.11
Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
-version 1.2.0beta3 [May 17, 2001]
+
+Version 1.2.0beta3 [May 17, 2001]
Enabled user memory function by default.
Modified png_create_struct so it passes user mem_ptr to user memory allocator.
Increased png_mng_features flag from png_byte to png_uint_32.
Bumped shared-library (so-number) and dll-number to 3.
-version 1.2.0beta4 [June 23, 2001]
+
+Version 1.2.0beta4 [June 23, 2001]
Check for missing profile length field in iCCP chunk and free chunk_data
in case of truncated iCCP chunk.
Bumped shared-library number to 3 in makefile.sgi and makefile.sggcc
@@ -1002,7 +1101,8 @@
of png_write_oFFS width and height from png_uint_32 to png_int_32.
Updated example.c
Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c
-version 1.2.0beta5 [August 8, 2001]
+
+Version 1.2.0beta5 [August 8, 2001]
Revised contrib/gregbook
Revised makefile.gcmmx
Revised pnggccrd.c to conditionally compile some thread-unsafe code only
@@ -1013,27 +1113,32 @@
Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c
Removed restriction that do_invert_mono only operate on 1-bit opaque files
-version 1.2.0 [September 1, 2001]
+Version 1.2.0 [September 1, 2001]
Changed a png_warning() to png_debug() in pnggccrd.c
Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
-version 1.2.1beta1 [October 19, 2001]
+
+Version 1.2.1beta1 [October 19, 2001]
Revised makefile.std in contrib/pngminus
Include background_1 in png_struct regardless of gamma support.
Revised makefile.netbsd and makefile.macosx, added makefile.darwin.
Revised example.c to provide more details about using row_callback().
-version 1.2.1beta2 [October 25, 2001]
+
+Version 1.2.1beta2 [October 25, 2001]
Added type cast to each NULL appearing in a function call, except for
WINCE functions.
Added makefile.so9.
-version 1.2.1beta3 [October 27, 2001]
+
+Version 1.2.1beta3 [October 27, 2001]
Removed type casts from all NULLs.
Simplified png_create_struct_2().
-version 1.2.1beta4 [November 7, 2001]
+
+Version 1.2.1beta4 [November 7, 2001]
Revised png_create_info_struct() and png_creat_struct_2().
Added error message if png_write_info() was omitted.
Type cast NULLs appearing in function calls when _NO_PROTO or
PNG_TYPECAST_NULL is defined.
-version 1.2.1rc1 [November 24, 2001]
+
+Version 1.2.1rc1 [November 24, 2001]
Type cast NULLs appearing in function calls except when PNG_NO_TYPECAST_NULL
is defined.
Changed typecast of "size" argument to png_size_t in pngmem.c calls to
@@ -1042,14 +1147,16 @@
Updated makefile.sgi to recognize LIBPATH and INCPATH.
Updated various makefiles so "make clean" does not remove previous major
version of the shared library.
-version 1.2.1rc2 [December 4, 2001]
+
+Version 1.2.1rc2 [December 4, 2001]
Always allocate 256-entry internal palette, hist, and trans arrays, to
avoid out-of-bounds memory reference caused by invalid PNG datastreams.
Added a check for prefix_length > data_length in iCCP chunk handler.
-version 1.2.1 [December 7, 2001]
+Version 1.2.1 [December 7, 2001]
None.
-version 1.2.2beta1 [February 22, 2002]
+
+Version 1.2.2beta1 [February 22, 2002]
Fixed a bug with reading the length of iCCP profiles (Larry Reeves).
Revised makefile.linux, makefile.gcmmx, and makefile.sgi to generate
libpng.a, libpng12.so (not libpng.so.3), and libpng12/png.h
@@ -1059,13 +1166,15 @@
Revised calls to png_create_read_struct() and png_create_write_struct()
for simpler debugging.
Revised png_zalloc() so zlib handles errors (uses PNG_FLAG_MALLOC_NULL_MEM_OK)
-version 1.2.2beta2 [February 23, 2002]
+
+Version 1.2.2beta2 [February 23, 2002]
Check chunk_length and idat_size for invalid (over PNG_MAX_UINT) lengths.
Check for invalid image dimensions in png_get_IHDR.
Added missing "fi;" in the install target of the SGI makefiles.
Added install-static to all makefiles that make shared libraries.
Always do gamma compensation when image is partially transparent.
-version 1.2.2beta3 [March 7, 2002]
+
+Version 1.2.2beta3 [March 7, 2002]
Compute background.gray and background_1.gray even when color_type is RGB
in case image gets reduced to gray later.
Modified shared-library makefiles to install pkgconfig/libpngNN.pc.
@@ -1075,12 +1184,14 @@
Added install-shared target to all makefiles that make shared libraries.
Stopped a double free of palette, hist, and trans when not using free_me.
Added makefile.32sunu for Sun Ultra 32 and makefile.64sunu for Sun Ultra 64.
-version 1.2.2beta4 [March 8, 2002]
+
+Version 1.2.2beta4 [March 8, 2002]
Compute background.gray and background_1.gray even when color_type is RGB
in case image gets reduced to gray later (Jason Summers).
Relocated a misplaced /bin/rm in the "install-shared" makefile targets
Added PNG_1_0_X macro which can be used to build a 1.0.x-compatible library.
-version 1.2.2beta5 [March 26, 2002]
+
+Version 1.2.2beta5 [March 26, 2002]
Added missing PNGAPI to several function definitions.
Check for invalid bit_depth or color_type in png_get_IHDR(), and
check for missing PLTE or IHDR in png_push_read_chunk() (Matthias Clasen).
@@ -1089,33 +1200,45 @@
Changed "()" to "{}" in scripts/libpng.pc.in.
Revised makefiles to put png.h and pngconf.h only in $prefix/include/libpngNN
Revised makefiles to make symlink to libpng.so.NN in addition to libpngNN.so
-version 1.2.2beta6 [March 31, 2002]
-version 1.0.13beta1 [March 31, 2002]
+
+Version 1.2.2beta6 [March 31, 2002]
+
+Version 1.0.13beta1 [March 31, 2002]
Prevent png_zalloc() from trying to memset memory that it failed to acquire.
Add typecasts of PNG_MAX_UINT in pngset_cHRM_fixed() (Matt Holgate).
Ensure that the right function (user or default) is used to free the
png_struct after an error in png_create_read_struct_2().
-version 1.2.2rc1 [April 7, 2002]
-version 1.0.13rc1 [April 7, 2002]
+
+Version 1.2.2rc1 [April 7, 2002]
+
+Version 1.0.13rc1 [April 7, 2002]
Save the ebx register in pnggccrd.c (Sami Farin)
Add "mem_ptr = png_ptr->mem_ptr" in png_destroy_write_struct() (Paul Gardner).
Updated makefiles to put headers in include/libpng and remove old include/*.h.
-version 1.2.2 [April 15, 2002]
-version 1.0.13 [April 15, 2002]
+Version 1.2.2 [April 15, 2002]
+
+Version 1.0.13 [April 15, 2002]
Revised description of png_set_filter() in libpng.3/libpng.txt.
Revised makefile.netbsd and added makefile.neNNbsd and makefile.freebsd
-version 1.0.13patch01 [April 17, 2002]
-version 1.2.2patch01 [April 17, 2002]
- Changed ${PNGMAJ}.${PNGVER} bug to ${PNGVER} in makefile.sgi and makefile.sggcc
- Fixed VER -> PNGVER typo in makefile.macosx and added install-static to install
+
+Version 1.0.13patch01 [April 17, 2002]
+
+Version 1.2.2patch01 [April 17, 2002]
+ Changed ${PNGMAJ}.${PNGVER} bug to ${PNGVER} in makefile.sgi and
+ makefile.sggcc
+ Fixed VER -> PNGVER typo in makefile.macosx and added install-static to
+ install
Added install: target to makefile.32sunu and makefile.64sunu
-version 1.0.13patch03 [April 18, 2002]
-version 1.2.2patch03 [April 18, 2002]
+
+Version 1.0.13patch03 [April 18, 2002]
+
+Version 1.2.2patch03 [April 18, 2002]
Revised 15 makefiles to link libpng.a to libpngNN.a and the include libpng
subdirectory to libpngNN subdirectory without the full pathname.
Moved generation of libpng.pc from "install" to "all" in 15 makefiles.
-version 1.2.3rc1 [April 28, 2002]
+
+Version 1.2.3rc1 [April 28, 2002]
Added install-man target to 15 makefiles (Dimitri Papadopolous-Orfanos).
Added $(DESTDIR) feature to 24 makefiles (Tim Mooney)
Fixed bug with $prefix, should be $(prefix) in makefile.hpux.
@@ -1127,70 +1250,83 @@
to put one in their application.
Restored png_zalloc() and png_zfree() prototypes to version 1.2.1 and
removed them from module definition files.
-version 1.2.3rc2 [May 1, 2002]
+
+Version 1.2.3rc2 [May 1, 2002]
Fixed bug in reporting number of channels in pngget.c and pngset.c,
that was introduced in version 1.2.2beta5.
Exported png_zalloc(), png_zfree(), png_default_read(), png_default_write(),
png_default_flush(), and png_push_fill_buffer() and included them in
module definition files.
Added "libpng.pc" dependency to the "install-shared" target in 15 makefiles.
-version 1.2.3rc3 [May 1, 2002]
+
+Version 1.2.3rc3 [May 1, 2002]
Revised prototype for png_default_flush()
Remove old libpng.pc and libpngNN.pc before installing new ones.
-version 1.2.3rc4 [May 2, 2002]
+
+Version 1.2.3rc4 [May 2, 2002]
Typos in *.def files (png_default_read|write -> png_default_read|write_data)
In makefiles, changed rm libpng.NN.pc to rm libpngNN.pc
- Added libpng-config and libpngNN-config and modified makefiles to install them.
+ Added libpng-config and libpngNN-config and modified makefiles to install
+ them.
Changed $(MANPATH) to $(DESTDIR)$(MANPATH) in makefiles
Added "Win32 DLL VB" configuration to projects/msvc/libpng.dsp
-version 1.2.3rc5 [May 11, 2002]
+
+Version 1.2.3rc5 [May 11, 2002]
Changed "error" and "message" in prototypes to "error_message" and
"warning_message" to avoid namespace conflict.
Revised 15 makefiles to build libpng-config from libpng-config-*.in
Once more restored png_zalloc and png_zfree to regular nonexported form.
Restored png_default_read|write_data, png_default_flush, png_read_fill_buffer
- to nonexported form, but with PNGAPI, and removed them from module def files.
-version 1.2.3rc6 [May 14, 2002]
+ to nonexported form, but with PNGAPI, and removed them from module def
+ files.
+
+Version 1.2.3rc6 [May 14, 2002]
Removed "PNGAPI" from png_zalloc() and png_zfree() in png.c
Changed "Gz" to "Gd" in projects/msvc/libpng.dsp and zlib.dsp.
Removed leftover libpng-config "sed" script from four makefiles.
Revised libpng-config creating script in 16 makefiles.
-version 1.2.3 [May 22, 2002]
+Version 1.2.3 [May 22, 2002]
Revised libpng-config target in makefile.cygwin.
Removed description of png_set_mem_fn() from documentation.
Revised makefile.freebsd.
Minor cosmetic changes to 15 makefiles, e.g., $(DI) = $(DESTDIR)/$(INCDIR).
Revised projects/msvc/README.txt
Changed -lpng to -lpngNN in LDFLAGS in several makefiles.
-version 1.2.4beta1 [May 24, 2002]
+
+Version 1.2.4beta1 [May 24, 2002]
Added libpng.pc and libpng-config to "all:" target in 16 makefiles.
Fixed bug in 16 makefiles: $(DESTDIR)/$(LIBPATH) to $(DESTDIR)$(LIBPATH)
Added missing "\" before closing double quote in makefile.gcmmx.
Plugged various memory leaks; added png_malloc_warn() and png_set_text_2()
functions.
-version 1.2.4beta2 [June 25, 2002]
+
+Version 1.2.4beta2 [June 25, 2002]
Plugged memory leak of png_ptr->current_text (Matt Holgate).
Check for buffer overflow before reading CRC in pngpread.c (Warwick Allison)
Added -soname to the loader flags in makefile.dec, makefile.sgi, and
makefile.sggcc.
Added "test-installed" target to makefile.linux, makefile.gcmmx,
makefile.sgi, and makefile.sggcc.
-version 1.2.4beta3 [June 28, 2002]
+
+Version 1.2.4beta3 [June 28, 2002]
Plugged memory leak of row_buf in pngtest.c when there is a png_error().
Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data.
Added "test-installed" target to makefile.32sunu, makefile.64sunu,
makefile.beos, makefile.darwin, makefile.dec, makefile.macosx,
makefile.solaris, makefile.hpux, makefile.hpgcc, and makefile.so9.
-version 1.2.4rc1 and 1.0.14rc1 [July 2, 2002]
+
+Version 1.2.4rc1 and 1.0.14rc1 [July 2, 2002]
Added "test-installed" target to makefile.cygwin and makefile.sco.
Revised pnggccrd.c to be able to back out version 1.0.x via PNG_1_0_X macro.
-version 1.2.4 and 1.0.14 [July 8, 2002]
+Version 1.2.4 and 1.0.14 [July 8, 2002]
Changed png_warning() to png_error() when width is too large to process.
-version 1.2.4patch01 [July 20, 2002]
+
+Version 1.2.4patch01 [July 20, 2002]
Revised makefile.cygwin to use DLL number 12 instead of 13.
-version 1.2.5beta1 [August 6, 2002]
+
+Version 1.2.5beta1 [August 6, 2002]
Added code to contrib/gregbook/readpng2.c to ignore unused chunks.
Replaced toucan.png in contrib/gregbook (it has been corrupt since 1.0.11)
Removed some stray *.o files from contrib/gregbook.
@@ -1199,36 +1335,43 @@
Prevent png_ptr->pass from exceeding 7 in png_push_finish_row().
Updated makefile.hpgcc
Updated png.c and pnggccrd.c handling of return from png_mmx_support()
-version 1.2.5beta2 [August 15, 2002]
+
+Version 1.2.5beta2 [August 15, 2002]
Only issue png_warning() about "Too much data" in pngpread.c when avail_in
is nonzero.
Updated makefiles to install a separate libpng.so.3 with its own rpath.
-version 1.2.5rc1 and 1.0.15rc1 [August 24, 2002]
+
+Version 1.2.5rc1 and 1.0.15rc1 [August 24, 2002]
Revised makefiles to not remove previous minor versions of shared libraries.
-version 1.2.5rc2 and 1.0.15rc2 [September 16, 2002]
+
+Version 1.2.5rc2 and 1.0.15rc2 [September 16, 2002]
Revised 13 makefiles to remove "-lz" and "-L$(ZLIBLIB)", etc., from shared
library loader directive.
Added missing "$OBJSDLL" line to makefile.gcmmx.
Added missing "; fi" to makefile.32sunu.
-version 1.2.5rc3 and 1.0.15rc3 [September 18, 2002]
+
+Version 1.2.5rc3 and 1.0.15rc3 [September 18, 2002]
Revised libpng-config script.
-version 1.2.5 and 1.0.15 [October 3, 2002]
+Version 1.2.5 and 1.0.15 [October 3, 2002]
Revised makefile.macosx, makefile.darwin, makefile.hpgcc, and makefile.hpux,
and makefile.aix.
Relocated two misplaced PNGAPI lines in pngtest.c
-version 1.2.6beta1 [October 22, 2002]
+
+Version 1.2.6beta1 [October 22, 2002]
Commented out warning about uninitialized mmx_support in pnggccrd.c.
Changed "IBMCPP__" flag to "__IBMCPP__" in pngconf.h.
Relocated two more misplaced PNGAPI lines in pngtest.c
Fixed memory overrun bug in png_do_read_filler() with 16-bit datastreams,
introduced in version 1.0.2.
Revised makefile.macosx, makefile.dec, makefile.aix, and makefile.32sunu.
-version 1.2.6beta2 [November 1, 2002]
+
+Version 1.2.6beta2 [November 1, 2002]
Added libpng-config "--ldopts" output.
Added "AR=ar" and "ARFLAGS=rc" and changed "ar rc" to "$(AR) $(ARFLAGS)"
in makefiles.
-version 1.2.6beta3 [July 18, 2004]
+
+Version 1.2.6beta3 [July 18, 2004]
Reverted makefile changes from version 1.2.6beta2 and some of the changes
from version 1.2.6beta1; these will be postponed until version 1.2.7.
Version 1.2.6 is going to be a simple bugfix release.
@@ -1281,7 +1424,8 @@
Updated contrib/visupng/VisualPng.dsp (Cosmin).
Updated contrib/visupng/cexcept.h to version 2.0.0 (Cosmin).
Added a separate distribution with "configure" and supporting files (Junichi).
-version 1.2.6beta4 [July 28, 2004]
+
+Version 1.2.6beta4 [July 28, 2004]
Added user ability to change png_size_t via a PNG_SIZE_T macro.
Added png_sizeof() and png_convert_size() functions.
Added PNG_SIZE_MAX (maximum value of a png_size_t variable.
@@ -1303,7 +1447,8 @@
Added some "#if PNG_WRITE_SUPPORTED" blocks.
Added #ifdef to remove some redundancy in png_malloc_default().
Use png_malloc instead of png_zalloc to allocate the pallete.
-version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004]
+
+Version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004]
Fixed buffer overflow vulnerability in png_handle_tRNS()
Fixed integer arithmetic overflow vulnerability in png_read_png().
Fixed some harmless bugs in png_handle_sBIT, etc, that would cause
@@ -1318,7 +1463,8 @@
Fixed wrong cast of returns from png_get_user_width|height_max().
Changed some "keep the compiler happy" from empty statements to returns,
Revised libpng.txt to remove 1.2.x stuff from the 1.0.x distribution
-version 1.0.16rc2 and 1.2.6rc2 [August 7, 2004]
+
+Version 1.0.16rc2 and 1.2.6rc2 [August 7, 2004]
Revised makefile.darwin and makefile.solaris. Removed makefile.macosx.
Revised pngtest's png_debug_malloc() to use png_malloc() instead of
png_malloc_default() which is not supposed to be exported.
@@ -1332,91 +1478,106 @@
Changed "HANDLE_CHUNK_*" to "PNG_HANDLE_CHUNK_*" (Cosmin)
Added "-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)" to 15 *NIX makefiles.
Added code to update the row_info->colortype in png_do_read_filler() (MSB).
-version 1.0.16rc3 and 1.2.6rc3 [August 9, 2004]
+
+Version 1.0.16rc3 and 1.2.6rc3 [August 9, 2004]
Eliminated use of "abs()" in testing cHRM and gAMA values, to avoid
trouble with some 64-bit compilers. Created PNG_OUT_OF_RANGE() macro.
Revised documentation of png_set_keep_unknown_chunks().
Check handle_as_unknown status in pngpread.c, as in pngread.c previously.
Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_INTERNAL section of png.h
Added "rim" definitions for CONST4 and CONST6 in pnggccrd.c
-version 1.0.16rc4 and 1.2.6rc4 [August 10, 2004]
+
+Version 1.0.16rc4 and 1.2.6rc4 [August 10, 2004]
Fixed mistake in pngtest.c introduced in 1.2.6rc2 (declaration of
"pinfo" was out of place).
-version 1.0.16rc5 and 1.2.6rc5 [August 10, 2004]
+
+Version 1.0.16rc5 and 1.2.6rc5 [August 10, 2004]
Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_ASSEMBLER_CODE_SUPPORTED
section of png.h where they were inadvertently placed in version rc3.
-version 1.2.6 and 1.0.16 [August 15, 2004]
+Version 1.2.6 and 1.0.16 [August 15, 2004]
Revised pngtest so memory allocation testing is only done when PNG_DEBUG==1.
-version 1.2.7beta1 [August 26, 2004]
+
+Version 1.2.7beta1 [August 26, 2004]
Removed unused pngasmrd.h file.
Removed references to uu.net for archived files. Added references to
PNG Spec (second edition) and the PNG ISO/IEC Standard.
Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR.
Fixed bug with "optimized window size" in the IDAT datastream, that
causes libpng to write PNG files with incorrect zlib header bytes.
-version 1.2.7beta2 [August 28, 2004]
+
+Version 1.2.7beta2 [August 28, 2004]
Fixed bug with sCAL chunk and big-endian machines (David Munro).
Undid new code added in 1.2.6rc2 to update the color_type in
png_set_filler().
Added png_set_add_alpha() that updates color type.
-version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004]
+
+Version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004]
Revised png_set_strip_filler() to not remove alpha if color_type has alpha.
-version 1.2.7 and 1.0.17 [September 12, 2004]
+Version 1.2.7 and 1.0.17 [September 12, 2004]
Added makefile.hp64
Changed projects/msvc/png32ms.def to scripts/png32ms.def in makefile.cygwin
-version 1.2.8beta1 [November 1, 2004]
+
+Version 1.2.8beta1 [November 1, 2004]
Fixed bug in png_text_compress() that would fail to complete a large block.
Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during
strip alpha operation in png_do_strip_filler().
Added PNG_1_2_X definition in pngconf.h
Use #ifdef to comment out png_info_init in png.c and png_read_init in
pngread.c (as of 1.3.0)
-version 1.2.8beta2 [November 2, 2004]
+
+Version 1.2.8beta2 [November 2, 2004]
Reduce color_type to a nonalpha type after strip alpha operation in
png_do_strip_filler().
-version 1.2.8beta3 [November 3, 2004]
+
+Version 1.2.8beta3 [November 3, 2004]
Revised definitions of PNG_MAX_UINT_32, PNG_MAX_SIZE, and PNG_MAXSUM
-version 1.2.8beta4 [November 12, 2004]
+
+Version 1.2.8beta4 [November 12, 2004]
Fixed (again) definition of PNG_LIBPNG_VER_DLLNUM in png.h (Cosmin).
Added PNG_LIBPNG_BUILD_PRIVATE in png.h (Cosmin).
Set png_ptr->zstream.data_type to Z_BINARY, to avoid unnecessary detection
of data type in deflate (Cosmin).
Deprecated but continue to support SPECIALBUILD and PRIVATEBUILD in favor of
PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING.
-version 1.2.8beta5 [November 20, 2004]
+
+Version 1.2.8beta5 [November 20, 2004]
Use png_ptr->flags instead of png_ptr->transformations to pass
PNG_STRIP_ALPHA info to png_do_strip_filler(), to preserve ABI
compatibility.
Revised handling of SPECIALBUILD, PRIVATEBUILD,
PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING.
-version 1.2.8rc1 [November 24, 2004]
+
+Version 1.2.8rc1 [November 24, 2004]
Moved handling of BUILD macros from pngconf.h to png.h
Added definition of PNG_LIBPNG_BASE_TYPE in png.h, inadvertently
omitted from beta5.
Revised scripts/pngw32.rc
Despammed mailing addresses by masking "@" with "at".
Inadvertently installed a supposedly faster test version of pngrutil.c
-version 1.2.8rc2 [November 26, 2004]
+
+Version 1.2.8rc2 [November 26, 2004]
Added two missing "\" in png.h
Change tests in pngread.c and pngpread.c to
if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
png_do_read_transformations(png_ptr);
-version 1.2.8rc3 [November 28, 2004]
+
+Version 1.2.8rc3 [November 28, 2004]
Reverted pngrutil.c to version libpng-1.2.8beta5.
Added scripts/makefile.elf with supporting code in pngconf.h for symbol
versioning (John Bowler).
-version 1.2.8rc4 [November 29, 2004]
+
+Version 1.2.8rc4 [November 29, 2004]
Added projects/visualc7 (Simon-pierre).
-version 1.2.8rc5 [November 29, 2004]
+
+Version 1.2.8rc5 [November 29, 2004]
Fixed new typo in scripts/pngw32.rc
-version 1.2.8 [December 3, 2004]
+Version 1.2.8 [December 3, 2004]
Removed projects/visualc7, added projects/visualc71.
-version 1.2.9beta1 [February 21, 2006]
-
+Version 1.2.9beta1 [February 21, 2006]
Initialized some structure members in pngwutil.c to avoid gcc-4.0.0 complaints
Revised man page and libpng.txt to make it clear that one should not call
png_read_end or png_write_end after png_read_png or png_write_png.
@@ -1438,8 +1599,7 @@
Fixed scripts/makefile.cygwin (Christian Biesinger, Cosmin).
Default iTXt support was inadvertently enabled.
-version 1.2.9beta2 [February 21, 2006]
-
+Version 1.2.9beta2 [February 21, 2006]
Check for png_rgb_to_gray and png_gray_to_rgb read transformations before
checking for png_read_dither in pngrtran.c
Revised checking of chromaticity limits to accommodate extended RGB
@@ -1452,8 +1612,7 @@
Eliminated distributions without the "configure" script.
Updated INSTALL instructions.
-version 1.2.9beta3 [February 24, 2006]
-
+Version 1.2.9beta3 [February 24, 2006]
Fixed CRCRLF line endings in contrib/visupng/VisualPng.dsp
Made libpng.pc respect EXEC_PREFIX (D. P. Kreil, J. Bowler)
Removed reference to pngasmrd.h from Makefile.am
@@ -1462,8 +1621,7 @@
Renamed ANNOUNCE to NEWS.
Created AUTHORS file.
-version 1.2.9beta4 [March 3, 2006]
-
+Version 1.2.9beta4 [March 3, 2006]
Changed definition of PKGCONFIG from $prefix/lib to $libdir in configure.ac
Reverted to filenames LICENSE and ANNOUNCE; removed AUTHORS and COPYING.
Removed newline from the end of some error and warning messages.
@@ -1474,17 +1632,17 @@
Added "OS2" to list of systems that don't need underscores, in pnggccrd.c
Removed libpng version and date from *.c files.
-version 1.2.9beta5 [March 4, 2006]
+Version 1.2.9beta5 [March 4, 2006]
Removed trailing blanks from source files.
Put version and date of latest change in each source file, and changed
copyright year accordingly.
More cleanup of configure.ac, Makefile.am, and associated scripts.
Restored scripts/makefile.elf which was inadvertently deleted.
-version 1.2.9beta6 [March 6, 2006]
+Version 1.2.9beta6 [March 6, 2006]
Fixed typo (RELEASE) in configuration files.
-version 1.2.9beta7 [March 7, 2006]
+Version 1.2.9beta7 [March 7, 2006]
Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am
Fixed inconsistent #ifdef's around png_sig_bytes() and png_set_sCAL_s()
in png.h.
@@ -1492,7 +1650,7 @@
Made cosmetic changes to some makefiles, adding LN_SF and other macros.
Made some makefiles accept "exec_prefix".
-version 1.2.9beta8 [March 9, 2006]
+Version 1.2.9beta8 [March 9, 2006]
Fixed some "#if defined (..." which should be "#if defined(..."
Bug introduced in libpng-1.2.8.
Fixed inconsistency in definition of png_default_read_data()
@@ -1503,82 +1661,82 @@
Added png_set_expand_gray_1_2_4_to_8() and deprecated
png_set_gray_1_2_4_to_8() which also expands tRNS to alpha.
-version 1.2.9beta9 [March 10, 2006]
+Version 1.2.9beta9 [March 10, 2006]
Include "config.h" in pngconf.h when available.
Added some checks for NULL png_ptr or NULL info_ptr (timeless)
-version 1.2.9beta10 [March 20, 2006]
+Version 1.2.9beta10 [March 20, 2006]
Removed extra CR from contrib/visualpng/VisualPng.dsw (Cosmin)
Made pnggccrd.c PIC-compliant (Christian Aichinger).
Added makefile.mingw (Wolfgang Glas).
Revised pngconf.h MMX checking.
-version 1.2.9beta11 [March 22, 2006]
+Version 1.2.9beta11 [March 22, 2006]
Fixed out-of-order declaration in pngwrite.c that was introduced in beta9
Simplified some makefiles by using LIBSO, LIBSOMAJ, and LIBSOVER macros.
-version 1.2.9rc1 [March 31, 2006]
+Version 1.2.9rc1 [March 31, 2006]
Defined PNG_USER_PRIVATEBUILD when including "pngusr.h" (Cosmin).
Removed nonsensical assertion check from pngtest.c (Cosmin).
-version 1.2.9 [April 14, 2006]
+Version 1.2.9 [April 14, 2006]
Revised makefile.beos and added "none" selector in ltmain.sh
-version 1.2.10beta1 [April 15, 2006]
+Version 1.2.10beta1 [April 15, 2006]
Renamed "config.h" to "png_conf.h" and revised Makefile.am to add
-DPNG_BUILDING_LIBPNG to compile directive, and modified pngconf.h
to include png_conf.h only when PNG_BUILDING_LIBPNG is defined.
-version 1.2.10beta2 [April 15, 2006]
+Version 1.2.10beta2 [April 15, 2006]
Manually updated Makefile.in and configure. Changed png_conf.h.in
back to config.h.
-version 1.2.10beta3 [April 15, 2006]
+Version 1.2.10beta3 [April 15, 2006]
Change png_conf.h back to config.h in pngconf.h.
-version 1.2.10beta4 [April 16, 2006]
+Version 1.2.10beta4 [April 16, 2006]
Change PNG_BUILDING_LIBPNG to PNG_CONFIGURE_LIBPNG in config/Makefile*.
-version 1.2.10beta5 [April 16, 2006]
+Version 1.2.10beta5 [April 16, 2006]
Added a configure check for compiling assembler code in pnggccrd.c
-version 1.2.10beta6 [April 17, 2006]
+Version 1.2.10beta6 [April 17, 2006]
Revised the configure check for pnggccrd.c
Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@
Added @LIBPNG_DEFINES@ to arguments when building libpng.sym
-version 1.2.10beta7 [April 18, 2006]
+Version 1.2.10beta7 [April 18, 2006]
Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles.
-version 1.2.10rc1 [April 19, 2006]
+Version 1.2.10rc1 [April 19, 2006]
Ensure pngconf.h doesn't define both PNG_USE_PNGGCCRD and PNG_USE_PNGVCRD
Fixed "LN_FS" typo in makefile.sco and makefile.solaris.
-version 1.2.10rc2 [April 20, 2006]
+Version 1.2.10rc2 [April 20, 2006]
Added a backslash between -DPNG_CONFIGURE_LIBPNG and -DPNG_NO_ASSEMBLER_CODE
in configure.ac and configure
Made the configure warning about versioned symbols less arrogant.
-version 1.2.10rc3 [April 21, 2006]
+Version 1.2.10rc3 [April 21, 2006]
Added a note in libpng.txt that png_set_sig_bytes(8) can be used when
writing an embedded PNG without the 8-byte signature.
Revised makefiles and configure to avoid making links to libpng.so.*
-version 1.2.10 [April 23, 2006]
+Version 1.2.10 [April 23, 2006]
Reverted configure to "rc2" state.
-version 1.2.11beta1 [May 31, 2006]
+Version 1.2.11beta1 [May 31, 2006]
scripts/libpng.pc.in contained "configure" style version info and would
not work with makefiles.
The shared-library makefiles were linking to libpng.so.0 instead of
libpng.so.3 compatibility as the library.
-version 1.2.11beta2 [June 2, 2006]
+Version 1.2.11beta2 [June 2, 2006]
Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
buffer overflow.
Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb)
-version 1.2.11beta3 [June 5, 2006]
+Version 1.2.11beta3 [June 5, 2006]
Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin).
Removed the accidental leftover Makefile.in~ (Cosmin).
Avoided potential buffer overflow and optimized buffer in
@@ -1586,116 +1744,116 @@
Removed the include directories and libraries from CFLAGS and LDFLAGS
in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin).
-version 1.2.11beta4 [June 6, 2006]
+Version 1.2.11beta4 [June 6, 2006]
Allow zero-length IDAT chunks after the entire zlib datastream, but not
after another intervening chunk type.
-version 1.0.19rc1, 1.2.11rc1 [June 13, 2006]
+Version 1.0.19rc1, 1.2.11rc1 [June 13, 2006]
Deleted extraneous square brackets from [config.h] in configure.ac
-version 1.0.19rc2, 1.2.11rc2 [June 14, 2006]
+Version 1.0.19rc2, 1.2.11rc2 [June 14, 2006]
Added prototypes for PNG_INCH_CONVERSIONS functions to png.h
Revised INSTALL and autogen.sh
Fixed typo in several makefiles (-W1 should be -Wl)
Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
-version 1.0.19rc3, 1.2.11rc3 [June 15, 2006]
+Version 1.0.19rc3, 1.2.11rc3 [June 15, 2006]
Removed the new typedefs for 64-bit systems (delay until version 1.4.0)
Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
reading out of bounds.
-version 1.0.19rc4, 1.2.11rc4 [June 15, 2006]
+Version 1.0.19rc4, 1.2.11rc4 [June 15, 2006]
Really removed the new typedefs for 64-bit systems.
-version 1.0.19rc5, 1.2.11rc5 [June 22, 2006]
+Version 1.0.19rc5, 1.2.11rc5 [June 22, 2006]
Removed png_sig_bytes entry from scripts/pngw32.def
-version 1.0.19, 1.2.11 [June 26, 2006]
+Version 1.0.19, 1.2.11 [June 26, 2006]
None.
-version 1.0.20, 1.2.12 [June 27, 2006]
+Version 1.0.20, 1.2.12 [June 27, 2006]
Really increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
buffer overflow.
-version 1.2.13beta1 [October 2, 2006]
+Version 1.2.13beta1 [October 2, 2006]
Removed AC_FUNC_MALLOC from configure.ac
Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h
Change "logical" to "bitwise" throughout documentation.
- Detect and fix attempt to write wrong iCCP profile length.
+ Detect and fix attempt to write wrong iCCP profile length (CVE-2006-7244)
-version 1.0.21, 1.2.13 [November 14, 2006]
+Version 1.0.21, 1.2.13 [November 14, 2006]
Fix potential buffer overflow in sPLT chunk handler.
Fix Makefile.am to not try to link to noexistent files.
Check all exported functions for NULL png_ptr.
-version 1.2.14beta1 [November 17, 2006]
+Version 1.2.14beta1 [November 17, 2006]
Relocated three misplaced tests for NULL png_ptr.
Built Makefile.in with automake-1.9.6 instead of 1.9.2.
Build configure with autoconf-2.60 instead of 2.59
-version 1.2.14beta2 [November 17, 2006]
+Version 1.2.14beta2 [November 17, 2006]
Added some typecasts in png_zalloc().
-version 1.2.14rc1 [November 20, 2006]
+Version 1.2.14rc1 [November 20, 2006]
Changed "strtod" to "png_strtod" in pngrutil.c
-version 1.0.22, 1.2.14 [November 27, 2006]
+Version 1.0.22, 1.2.14 [November 27, 2006]
Added missing "$(srcdir)" in Makefile.am and Makefile.in
-version 1.2.15beta1 [December 3, 2006]
+Version 1.2.15beta1 [December 3, 2006]
Generated configure with autoconf-2.61 instead of 2.60
Revised configure.ac to update libpng.pc and libpng-config.
-version 1.2.15beta2 [December 3, 2006]
+Version 1.2.15beta2 [December 3, 2006]
Always export MMX asm functions, just stubs if not building pnggccrd.c
-version 1.2.15beta3 [December 4, 2006]
+Version 1.2.15beta3 [December 4, 2006]
Add "png_bytep" typecast to profile while calculating length in pngwutil.c
-version 1.2.15beta4 [December 7, 2006]
+Version 1.2.15beta4 [December 7, 2006]
Added scripts/CMakeLists.txt
Changed PNG_NO_ASSEMBLER_CODE to PNG_NO_MMX_CODE in scripts, like 1.4.0beta
-version 1.2.15beta5 [December 7, 2006]
+Version 1.2.15beta5 [December 7, 2006]
Changed some instances of PNG_ASSEMBLER_* to PNG_MMX_* in pnggccrd.c
Revised scripts/CMakeLists.txt
-version 1.2.15beta6 [December 13, 2006]
+Version 1.2.15beta6 [December 13, 2006]
Revised scripts/CMakeLists.txt and configure.ac
-version 1.2.15rc1 [December 18, 2006]
+Version 1.2.15rc1 [December 18, 2006]
Revised scripts/CMakeLists.txt
-version 1.2.15rc2 [December 21, 2006]
+Version 1.2.15rc2 [December 21, 2006]
Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers.
Added scripts/makefile.nommx
-version 1.2.15rc3 [December 25, 2006]
+Version 1.2.15rc3 [December 25, 2006]
Fixed shared library numbering error that was introduced in 1.2.15beta6.
-version 1.2.15rc4 [December 27, 2006]
+Version 1.2.15rc4 [December 27, 2006]
Fixed handling of rgb_to_gray when png_ptr->color.gray isn't set.
-version 1.2.15rc5 [December 31, 2006]
+Version 1.2.15rc5 [December 31, 2006]
Revised handling of rgb_to_gray.
-version 1.2.15 [January 5, 2007]
+Version 1.2.15 [January 5, 2007]
Added some (unsigned long) typecasts in pngtest.c to avoid printing errors.
-version 1.2.16beta1 [January 6, 2007]
+Version 1.2.16beta1 [January 6, 2007]
Fix bugs in makefile.nommx
-version 1.2.16beta2 [January 16, 2007]
+Version 1.2.16beta2 [January 16, 2007]
Revised scripts/CMakeLists.txt
-version 1.2.16 [January 31, 2007]
+Version 1.2.16 [January 31, 2007]
No changes.
-version 1.2.17beta1 [March 6, 2007]
+Version 1.2.17beta1 [March 6, 2007]
Revised scripts/CMakeLists.txt to install both shared and static libraries.
Deleted a redundant line from pngset.c.
-version 1.2.17beta2 [April 26, 2007]
+Version 1.2.17beta2 [April 26, 2007]
Relocated misplaced test for png_ptr == NULL in pngpread.c
Change "==" to "&" for testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN
flags.
@@ -1704,10 +1862,10 @@
Added "const" to some array declarations.
Mention examples of libpng usage in the libpng*.txt and libpng.3 documents.
-version 1.2.17rc1 [May 4, 2007]
+Version 1.2.17rc1 [May 4, 2007]
No changes.
-version 1.2.17rc2 [May 8, 2007]
+Version 1.2.17rc2 [May 8, 2007]
Moved several PNG_HAVE_* macros out of PNG_INTERNAL because applications
calling set_unknown_chunk_location() need them.
Changed transformation flag from PNG_EXPAND_tRNS to PNG_EXPAND in
@@ -1716,64 +1874,64 @@
can be free'ed in case of error. Revised unknown chunk handling in
pngrutil.c and pngpread.c to use this structure.
-version 1.2.17rc3 [May 8, 2007]
+Version 1.2.17rc3 [May 8, 2007]
Revised symbol-handling in configure script.
-version 1.2.17rc4 [May 10, 2007]
+Version 1.2.17rc4 [May 10, 2007]
Revised unknown chunk handling to avoid storing unknown critical chunks.
-version 1.0.25 [May 15, 2007]
-version 1.2.17 [May 15, 2007]
+Version 1.0.25 [May 15, 2007]
+Version 1.2.17 [May 15, 2007]
Added "png_ptr->num_trans=0" before error return in png_handle_tRNS,
to eliminate a vulnerability (CVE-2007-2445, CERT VU#684664)
-version 1.0.26 [May 15, 2007]
-version 1.2.18 [May 15, 2007]
+Version 1.0.26 [May 15, 2007]
+Version 1.2.18 [May 15, 2007]
Reverted the libpng-1.2.17rc3 change to symbol-handling in configure script
-version 1.2.19beta1 [May 18, 2007]
+Version 1.2.19beta1 [May 18, 2007]
Changed "const static" to "static PNG_CONST" everywhere, mostly undoing
change of libpng-1.2.17beta2. Changed other "const" to "PNG_CONST"
Changed some handling of unused parameters, to avoid compiler warnings.
"if (unused == NULL) return;" becomes "unused = unused".
-version 1.2.19beta2 [May 18, 2007]
+Version 1.2.19beta2 [May 18, 2007]
Only use the valid bits of tRNS value in png_do_expand() (Brian Cartier)
-version 1.2.19beta3 [May 19, 2007]
+Version 1.2.19beta3 [May 19, 2007]
Add some "png_byte" typecasts in png_check_keyword() and write new_key
instead of key in zTXt chunk (Kevin Ryde).
-version 1.2.19beta4 [May 21, 2007]
+Version 1.2.19beta4 [May 21, 2007]
Add png_snprintf() function and use it in place of sprint() for improved
defense against buffer overflows.
-version 1.2.19beta5 [May 21, 2007]
+Version 1.2.19beta5 [May 21, 2007]
Fixed png_handle_tRNS() to only use the valid bits of tRNS value.
Changed handling of more unused parameters, to avoid compiler warnings.
Removed some PNG_CONST in pngwutil.c to avoid compiler warnings.
-version 1.2.19beta6 [May 22, 2007]
+Version 1.2.19beta6 [May 22, 2007]
Added some #ifdef PNG_MMX_CODE_SUPPORTED where needed in pngvcrd.c
Added a special "_MSC_VER" case that defines png_snprintf to _snprintf
-version 1.2.19beta7 [May 22, 2007]
+Version 1.2.19beta7 [May 22, 2007]
Squelched png_squelch_warnings() in pnggccrd.c and added
an #ifdef PNG_MMX_CODE_SUPPORTED block around the declarations that caused
the warnings that png_squelch_warnings was squelching.
-version 1.2.19beta8 [May 22, 2007]
+Version 1.2.19beta8 [May 22, 2007]
Removed __MMX__ from test in pngconf.h.
-version 1.2.19beta9 [May 23, 2007]
+Version 1.2.19beta9 [May 23, 2007]
Made png_squelch_warnings() available via PNG_SQUELCH_WARNINGS macro.
Revised png_squelch_warnings() so it might work.
Updated makefile.sgcc and makefile.solaris; added makefile.solaris-x86.
-version 1.2.19beta10 [May 24, 2007]
+Version 1.2.19beta10 [May 24, 2007]
Resquelched png_squelch_warnings(), use "__attribute__((used))" instead.
-version 1.4.0beta1 [April 20, 2006]
+Version 1.4.0beta1 [April 20, 2006]
Enabled iTXt support (changes png_struct, thus requires so-number change).
Cleaned up PNG_ASSEMBLER_CODE_SUPPORTED vs PNG_MMX_CODE_SUPPORTED
Eliminated PNG_1_0_X and PNG_1_2_X macros.
@@ -1785,12 +1943,12 @@
Reduced dependency on C-runtime library when on Windows (Simon-Pierre)
Replaced sprintf() with png_sprintf() (Simon-Pierre)
-version 1.4.0beta2 [April 20, 2006]
+Version 1.4.0beta2 [April 20, 2006]
Revised makefiles and configure to avoid making links to libpng.so.*
Moved some leftover MMX-related defines from pngconf.h to pngintrn.h
Updated scripts/pngos2.def, pngw32.def, and projects/wince/png32ce.def
-version 1.4.0beta3 [May 10, 2006]
+Version 1.4.0beta3 [May 10, 2006]
Updated scripts/pngw32.def to comment out MMX functions.
Added PNG_NO_GET_INT_32 and PNG_NO_SAVE_INT_32 macros.
Scripts/libpng.pc.in contained "configure" style version info and would
@@ -1798,21 +1956,21 @@
Revised pngconf.h and added pngconf.h.in, so makefiles and configure can
pass defines to libpng and applications.
-version 1.4.0beta4 [May 11, 2006]
+Version 1.4.0beta4 [May 11, 2006]
Revised configure.ac, Makefile.am, and many of the makefiles to write
their defines in pngconf.h.
-version 1.4.0beta5 [May 15, 2006]
+Version 1.4.0beta5 [May 15, 2006]
Added a missing semicolon in Makefile.am and Makefile.in
Deleted extraneous square brackets from configure.ac
-version 1.4.0beta6 [June 2, 2006]
+Version 1.4.0beta6 [June 2, 2006]
Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
buffer overflow.
Changed sonum from 0 to 1.
Removed unused prototype for png_check_sig() from png.h
-version 1.4.0beta7 [June 16, 2006]
+Version 1.4.0beta7 [June 16, 2006]
Exported png_write_sig (Cosmin).
Optimized buffer in png_handle_cHRM() (Cosmin).
Set pHYs = 2835 x 2835 pixels per meter, and added
@@ -1821,11 +1979,11 @@
Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
Added "(unsigned long)" typecast on png_uint_32 variables in printf lists.
-version 1.4.0beta8 [June 22, 2006]
+Version 1.4.0beta8 [June 22, 2006]
Added demonstration of user chunk support in pngtest.c, to support the
public sTER chunk and a private vpAg chunk.
-version 1.4.0beta9 [July 3, 2006]
+Version 1.4.0beta9 [July 3, 2006]
Removed ordinals from scripts/pngw32.def and removed png_info_int and
png_set_gray_1_2_4_to_8 entries.
Inline call of png_get_uint_32() in png_get_uint_31().
@@ -1833,14 +1991,14 @@
Removed WINCE and Netware projects.
Removed standalone Y2KINFO file.
-version 1.4.0beta10 [July 12, 2006]
+Version 1.4.0beta10 [July 12, 2006]
Eliminated automatic copy of pngconf.h to pngconf.h.in from configure and
some makefiles, because it was not working reliably. Instead, distribute
pngconf.h.in along with pngconf.h and cause configure and some of the
makefiles to update pngconf.h from pngconf.h.in.
Added pngconf.h to DEPENDENCIES in Makefile.am
-version 1.4.0beta11 [August 19, 2006]
+Version 1.4.0beta11 [August 19, 2006]
Removed AC_FUNC_MALLOC from configure.ac.
Added a warning when writing iCCP profile with mismatched profile length.
Patched pnggccrd.c to assemble on x86_64 platforms.
@@ -1885,41 +2043,41 @@
pngconf.h.in (Glenn).
Detect and fix attempt to write wrong iCCP profile length.
-version 1.4.0beta12 [October 19, 2006]
+Version 1.4.0beta12 [October 19, 2006]
Changed "logical" to "bitwise" in the documentation.
Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h
Add a typecast to stifle compiler warning in pngrutil.c
-version 1.4.0beta13 [November 10, 2006]
+Version 1.4.0beta13 [November 10, 2006]
Fix potential buffer overflow in sPLT chunk handler.
Fix Makefile.am to not try to link to noexistent files.
-version 1.4.0beta14 [November 15, 2006]
+Version 1.4.0beta14 [November 15, 2006]
Check all exported functions for NULL png_ptr.
-version 1.4.0beta15 [November 17, 2006]
+Version 1.4.0beta15 [November 17, 2006]
Relocated two misplaced tests for NULL png_ptr.
Built Makefile.in with automake-1.9.6 instead of 1.9.2.
Build configure with autoconf-2.60 instead of 2.59
Add "install: all" in Makefile.am so "configure; make install" will work.
-version 1.4.0beta16 [November 17, 2006]
+Version 1.4.0beta16 [November 17, 2006]
Added a typecast in png_zalloc().
-version 1.4.0beta17 [December 4, 2006]
+Version 1.4.0beta17 [December 4, 2006]
Changed "new_key[79] = '\0';" to "(*new_key)[79] = '\0';" in pngwutil.c
Add "png_bytep" typecast to profile while calculating length in pngwutil.c
-version 1.4.0beta18 [December 7, 2006]
+Version 1.4.0beta18 [December 7, 2006]
Added scripts/CMakeLists.txt
-version 1.4.0beta19 [May 16, 2007]
+Version 1.4.0beta19 [May 16, 2007]
Revised scripts/CMakeLists.txt
Rebuilt configure and Makefile.in with newer tools.
Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers.
Added scripts/makefile.nommx
-version 1.4.0beta20 [July 9, 2008]
+Version 1.4.0beta20 [July 9, 2008]
Moved several PNG_HAVE_* macros from pngpriv.h to png.h because applications
calling set_unknown_chunk_location() need them.
Moved several macro definitions from pngpriv.h to pngconf.h
@@ -1927,19 +2085,19 @@
Deleted all use of the MMX assembler code and Intel-licensed optimizations.
Revised makefile.mingw
-version 1.4.0beta21 [July 21, 2008]
+Version 1.4.0beta21 [July 21, 2008]
Moved local array "chunkdata" from pngrutil.c to the png_struct, so
it will be freed by png_read_destroy() in case of a read error (Kurt
Christensen).
-version 1.4.0beta22 [July 21, 2008]
+Version 1.4.0beta22 [July 21, 2008]
Change "purpose" and "buffer" to png_ptr->chunkdata to avoid memory leaking.
-version 1.4.0beta23 [July 22, 2008]
+Version 1.4.0beta23 [July 22, 2008]
Change "chunkdata = NULL" to "png_ptr->chunkdata = NULL" several places in
png_decompress_chunk().
-version 1.4.0beta24 [July 25, 2008]
+Version 1.4.0beta24 [July 25, 2008]
Change all remaining "chunkdata" to "png_ptr->chunkdata" in
png_decompress_chunk(), and remove "chunkdata" from parameter list.
Put a call to png_check_chunk_name() in png_read_chunk_header().
@@ -1947,7 +2105,7 @@
Removed two calls to png_check_chunk_name() occuring later in the process.
Define PNG_NO_ERROR_NUMBERS by default in pngconf.h
-version 1.4.0beta25 [July 30, 2008]
+Version 1.4.0beta25 [July 30, 2008]
Added a call to png_check_chunk_name() in pngpread.c
Reverted png_check_chunk_name() to accept a name with a lowercase 3rd byte.
Added png_push_have_buffer() function to pngpread.c
@@ -1958,7 +2116,7 @@
Eliminated no-longer-used pngdefs.h (but it's still built in the makefiles)
Relocated a misplaced "#endif /* PNG_NO_WRITE_FILTER */" in pngwutil.c
-version 1.4.0beta26 [August 4, 2008]
+Version 1.4.0beta26 [August 4, 2008]
Removed png_push_have_buffer() function in pngpread.c. It increased the
compiled library size slightly.
Changed "-Wall" to "-W -Wall" in the CFLAGS in all makefiles (Cosmin Truta)
@@ -1966,105 +2124,105 @@
Updated contrib/visupng/cexcept.h to version 2.0.1
Added PNG_LITERAL_CHARACTER macros for #, [, and ].
-version 1.4.0beta27 [August 5, 2008]
+Version 1.4.0beta27 [August 5, 2008]
Revised usage of PNG_LITERAL_SHARP in pngerror.c.
Moved newline character from individual png_debug messages into the
png_debug macros.
Allow user to #define their own png_debug, png_debug1, and png_debug2.
-version 1.4.0beta28 [August 5, 2008]
+Version 1.4.0beta28 [August 5, 2008]
Revised usage of PNG_LITERAL_SHARP in pngerror.c.
Added PNG_STRING_NEWLINE macro
-version 1.4.0beta29 [August 9, 2008]
+Version 1.4.0beta29 [August 9, 2008]
Revised usage of PNG_STRING_NEWLINE to work on non-ISO compilers.
Added PNG_STRING_COPYRIGHT macro.
Added non-ISO versions of png_debug macros.
-version 1.4.0beta30 [August 14, 2008]
+Version 1.4.0beta30 [August 14, 2008]
Added premultiplied alpha feature (Volker Wiendl).
-version 1.4.0beta31 [August 18, 2008]
+Version 1.4.0beta31 [August 18, 2008]
Moved png_set_premultiply_alpha from pngtrans.c to pngrtran.c
Removed extra crc check at the end of png_handle_cHRM(). Bug introduced
in libpng-1.4.0beta20.
-version 1.4.0beta32 [August 19, 2008]
+Version 1.4.0beta32 [August 19, 2008]
Added PNG_WRITE_FLUSH_SUPPORTED block around new png_flush() call.
Revised PNG_NO_STDIO version of png_write_flush()
-version 1.4.0beta33 [August 20, 2008]
+Version 1.4.0beta33 [August 20, 2008]
Added png_get|set_chunk_cache_max() to limit the total number of sPLT,
text, and unknown chunks that can be stored.
-version 1.4.0beta34 [September 6, 2008]
+Version 1.4.0beta34 [September 6, 2008]
Shortened tIME_string to 29 bytes in pngtest.c
Fixed off-by-one error introduced in png_push_read_zTXt() function in
libpng-1.2.30beta04/pngpread.c (Harald van Dijk)
-version 1.4.0beta35 [October 6, 2008]
+Version 1.4.0beta35 [October 6, 2008]
Changed "trans_values" to "trans_color".
Changed so-number from 0 to 14. Some OS do not like 0.
Revised makefile.darwin to fix shared library numbering.
Change png_set_gray_1_2_4_to_8() to png_set_expand_gray_1_2_4_to_8()
in example.c (debian bug report)
-version 1.4.0beta36 [October 25, 2008]
+Version 1.4.0beta36 [October 25, 2008]
Sync with tEXt vulnerability fix in libpng-1.2.33rc02.
-version 1.4.0beta37 [November 13, 2008]
+Version 1.4.0beta37 [November 13, 2008]
Added png_check_cHRM in png.c and moved checking from pngget.c, pngrutil.c,
and pngwrite.c
-version 1.4.0beta38 [November 22, 2008]
+Version 1.4.0beta38 [November 22, 2008]
Added check for zero-area RGB cHRM triangle in png_check_cHRM() and
png_check_cHRM_fixed().
-version 1.4.0beta39 [November 23, 2008]
+Version 1.4.0beta39 [November 23, 2008]
Revised png_warning() to write its message on standard output by default
when warning_fn is NULL.
-version 1.4.0beta40 [November 24, 2008]
+Version 1.4.0beta40 [November 24, 2008]
Eliminated png_check_cHRM(). Instead, always use png_check_cHRM_fixed().
In png_check_cHRM_fixed(), ensure white_y is > 0, and removed redundant
check for all-zero coordinates that is detected by the triangle check.
-version 1.4.0beta41 [November 26, 2008]
+Version 1.4.0beta41 [November 26, 2008]
Fixed string vs pointer-to-string error in png_check_keyword().
Rearranged test expressions in png_check_cHRM_fixed() to avoid internal
overflows.
Added PNG_NO_CHECK_cHRM conditional.
-version 1.4.0beta42, 43 [December 1, 2008]
+Version 1.4.0beta42, 43 [December 1, 2008]
Merge png_debug with version 1.2.34beta04.
-version 1.4.0beta44 [December 6, 2008]
+Version 1.4.0beta44 [December 6, 2008]
Removed redundant check for key==NULL before calling png_check_keyword()
to ensure that new_key gets initialized and removed extra warning
(Merge with version 1.2.34beta05 -- Arvan Pritchard).
-version 1.4.0beta45 [December 9, 2008]
+Version 1.4.0beta45 [December 9, 2008]
In png_write_png(), respect the placement of the filler bytes in an earlier
call to png_set_filler() (Jim Barry).
-version 1.4.0beta46 [December 10, 2008]
+Version 1.4.0beta46 [December 10, 2008]
Undid previous change and added PNG_TRANSFORM_STRIP_FILLER_BEFORE and
PNG_TRANSFORM_STRIP_FILLER_AFTER conditionals and deprecated
PNG_TRANSFORM_STRIP_FILLER (Jim Barry).
-version 1.4.0beta47 [December 15, 2008]
+Version 1.4.0beta47 [December 15, 2008]
Support for dithering was disabled by default, because it has never
been well tested and doesn't work very well. The code has not
been removed, however, and can be enabled by building libpng with
PNG_READ_DITHER_SUPPORTED defined.
-version 1.4.0beta48 [February 14, 2009]
+Version 1.4.0beta48 [February 14, 2009]
Added new exported function png_calloc().
Combined several instances of png_malloc(); png_memset() into png_calloc().
Removed prototype for png_freeptr() that was added in libpng-1.4.0beta24
but was never defined.
-version 1.4.0beta49 [February 28, 2009]
+Version 1.4.0beta49 [February 28, 2009]
Added png_fileno() macro to pngconf.h, used in pngwio.c
Corrected order of #ifdef's in png_debug definition in png.h
Fixed bug introduced in libpng-1.4.0beta48 with the memset arguments
@@ -2073,7 +2231,7 @@
(bug introduced in libpng-1.2.34/1.4.0beta29).
Revised comments in png_set_read_fn() and png_set_write_fn().
-version 1.4.0beta50 [March 18, 2009]
+Version 1.4.0beta50 [March 18, 2009]
Use png_calloc() instead of png_malloc() to allocate big_row_buf when
reading an interlaced file, to avoid a possible UMR.
Undid revision of PNG_NO_STDIO version of png_write_flush(). Users
@@ -2084,21 +2242,21 @@
Removed fflush() from pngtest.c.
Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
-version 1.4.0beta51 [March 21, 2009]
+Version 1.4.0beta51 [March 21, 2009]
Removed new png_fileno() macro from pngconf.h .
-version 1.4.0beta52 [March 27, 2009]
+Version 1.4.0beta52 [March 27, 2009]
Relocated png_do_chop() ahead of building gamma tables in pngrtran.c
This avoids building 16-bit gamma tables unnecessarily.
Removed fflush() from pngtest.c.
Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
Added a section on differences between 1.0.x and 1.2.x to libpng.3/libpng.txt
-version 1.4.0beta53 [April 1, 2009]
+Version 1.4.0beta53 [April 1, 2009]
Removed some remaining MMX macros from pngpriv.h
Fixed potential memory leak of "new_name" in png_write_iCCP() (Ralph Giles)
-version 1.4.0beta54 [April 13, 2009]
+Version 1.4.0beta54 [April 13, 2009]
Added "ifndef PNG_SKIP_SETJMP_CHECK" block in pngconf.h to allow
application code writers to bypass the check for multiple inclusion
of setjmp.h when they know that it is safe to ignore the situation.
@@ -2107,54 +2265,54 @@
pngtest now produces, and made some cosmetic changes to pngtest output.
Eliminated deprecated png_read_init_3() and png_write_init_3() functions.
-version 1.4.0beta55 [April 15, 2009]
+Version 1.4.0beta55 [April 15, 2009]
Simplified error handling in pngread.c and pngwrite.c by putting
the new png_read_cleanup() and png_write_cleanup() functions inline.
-version 1.4.0beta56 [April 25, 2009]
+Version 1.4.0beta56 [April 25, 2009]
Renamed "user_chunk_data" to "my_user_chunk_data" in pngtest.c to suppress
"shadowed declaration" warning from gcc-4.3.3.
Renamed "gamma" to "png_gamma" in pngset.c to avoid "shadowed declaration"
warning about a global "gamma" variable in math.h on some platforms.
-version 1.4.0beta57 [May 2, 2009]
+Version 1.4.0beta57 [May 2, 2009]
Removed prototype for png_freeptr() that was added in libpng-1.4.0beta24
but was never defined (again).
Rebuilt configure scripts with autoconf-2.63 instead of 2.62
Removed pngprefs.h and MMX from makefiles
-version 1.4.0beta58 [May 14, 2009]
+Version 1.4.0beta58 [May 14, 2009]
Changed pngw32.def to pngwin.def in makefile.mingw (typo was introduced
in beta57).
Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri)
-version 1.4.0beta59 [May 15, 2009]
+Version 1.4.0beta59 [May 15, 2009]
Reformated sources in libpng style (3-space intentation, comment format)
Fixed typo in libpng docs (PNG_FILTER_AVE should be PNG_FILTER_AVG)
Added sections about the git repository and our coding style to the
documentation
Relocated misplaced #endif in pngwrite.c, sCAL chunk handler.
-version 1.4.0beta60 [May 19, 2009]
+Version 1.4.0beta60 [May 19, 2009]
Conditionally compile png_read_finish_row() which is not used by
progressive readers.
Added contrib/pngminim/preader to demonstrate building minimal progressive
decoder, based on contrib/gregbook with embedded libpng and zlib.
-version 1.4.0beta61 [May 20, 2009]
+Version 1.4.0beta61 [May 20, 2009]
In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there
is only one makefile in those directories, and revised the README files
accordingly.
More reformatting of comments, mostly to capitalize sentences.
-version 1.4.0beta62 [June 2, 2009]
+Version 1.4.0beta62 [June 2, 2009]
Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h
and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h
Reformatted several remaining "else statement" into two lines.
Added a section to the libpng documentation about using png_get_io_ptr()
in configure scripts to detect the presence of libpng.
-version 1.4.0beta63 [June 15, 2009]
+Version 1.4.0beta63 [June 15, 2009]
Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR()
multiple times and to specify the sample order in the tRNS chunk,
because the ISO PNG specification has a typo in the tRNS table.
@@ -2164,26 +2322,26 @@
Adopted preference for consistent use of "#ifdef" and "#ifndef" versus
"#if defined()" and "if !defined()" where possible.
-version 1.4.0beta64 [June 24, 2009]
+Version 1.4.0beta64 [June 24, 2009]
Eliminated PNG_LEGACY_SUPPORTED code.
Moved the various unknown chunk macro definitions outside of the
PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks.
-version 1.4.0beta65 [June 26, 2009]
+Version 1.4.0beta65 [June 26, 2009]
Added a reference to the libpng license in each file.
-version 1.4.0beta66 [June 27, 2009]
+Version 1.4.0beta66 [June 27, 2009]
Refer to the libpng license instead of the libpng license in each file.
-version 1.4.0beta67 [July 6, 2009]
+Version 1.4.0beta67 [July 6, 2009]
Relocated INVERT_ALPHA within png_read_png() and png_write_png().
Added high-level API transform PNG_TRANSFORM_GRAY_TO_RGB.
Added an "xcode" project to the projects directory (Alam Arias).
-version 1.4.0beta68 [July 19, 2009]
+Version 1.4.0beta68 [July 19, 2009]
Avoid some tests in filter selection in pngwutil.c
-version 1.4.0beta69 [July 25, 2009]
+Version 1.4.0beta69 [July 25, 2009]
Simplified the new filter-selection test. This runs faster in the
common "PNG_ALL_FILTERS" and PNG_FILTER_NONE cases.
Removed extraneous declaration from the new call to png_read_gray_to_rgb()
@@ -2191,54 +2349,54 @@
Fixed up xcode project (Alam Arias)
Added a prototype for png_64bit_product() in png.c
-version 1.4.0beta70 [July 27, 2009]
+Version 1.4.0beta70 [July 27, 2009]
Avoid a possible NULL dereference in debug build, in png_set_text_2().
(bug introduced in libpng-0.95, discovered by Evan Rouault)
-version 1.4.0beta71 [July 29, 2009]
+Version 1.4.0beta71 [July 29, 2009]
Rebuilt configure scripts with autoconf-2.64.
-version 1.4.0beta72 [August 1, 2009]
+Version 1.4.0beta72 [August 1, 2009]
Replaced *.tar.lzma with *.tar.xz in distribution. Get the xz codec
from <http://tukaani.org/xz>.
-version 1.4.0beta73 [August 1, 2009]
+Version 1.4.0beta73 [August 1, 2009]
Reject attempt to write iCCP chunk with negative embedded profile length
- (JD Chen)
+ (JD Chen) (CVE-2009-5063).
-version 1.4.0beta74 [August 8, 2009]
+Version 1.4.0beta74 [August 8, 2009]
Changed png_ptr and info_ptr member "trans" to "trans_alpha".
-version 1.4.0beta75 [August 21, 2009]
+Version 1.4.0beta75 [August 21, 2009]
Removed an extra png_debug() recently added to png_write_find_filter().
Fixed incorrect #ifdef in pngset.c regarding unknown chunk support.
-version 1.4.0beta76 [August 22, 2009]
+Version 1.4.0beta76 [August 22, 2009]
Moved an incorrectly located test in png_read_row() in pngread.c
-version 1.4.0beta77 [August 27, 2009]
+Version 1.4.0beta77 [August 27, 2009]
Removed lpXYZ.tar.bz2 (with CRLF), KNOWNBUG, libpng-x.y.z-KNOWNBUG.txt,
and the "noconfig" files from the distribution.
Moved CMakeLists.txt from scripts into the main libpng directory.
Various bugfixes and improvements to CMakeLists.txt (Philip Lowman)
-version 1.4.0beta78 [August 31, 2009]
+Version 1.4.0beta78 [August 31, 2009]
Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
Eliminated PNG_NO_FREE_ME and PNG_FREE_ME_SUPPORTED macros.
Use png_malloc plus a loop instead of png_calloc() to initialize
row_pointers in png_read_png().
-version 1.4.0beta79 [September 1, 2009]
+Version 1.4.0beta79 [September 1, 2009]
Eliminated PNG_GLOBAL_ARRAYS and PNG_LOCAL_ARRAYS; always use local arrays.
Eliminated PNG_CALLOC_SUPPORTED macro and always provide png_calloc().
-version 1.4.0beta80 [September 17, 2009]
+Version 1.4.0beta80 [September 17, 2009]
Removed scripts/libpng.icc
Changed typecast of filler from png_byte to png_uint_16 in png_set_filler().
(Dennis Gustafsson)
Fixed typo introduced in beta78 in pngtest.c ("#if def " should be "#ifdef ")
-version 1.4.0beta81 [September 23, 2009]
+Version 1.4.0beta81 [September 23, 2009]
Eliminated unused PNG_FLAG_FREE_* defines from pngpriv.h
Expanded TAB characters in pngrtran.c
Removed PNG_CONST from all "PNG_CONST PNG_CHNK" declarations to avoid
@@ -2246,60 +2404,60 @@
Changed all "#if [!]defined(X)" to "if[n]def X" where possible.
Eliminated unused png_ptr->row_buf_size
-version 1.4.0beta82 [September 25, 2009]
+Version 1.4.0beta82 [September 25, 2009]
Moved redundant IHDR checking into new png_check_IHDR() in png.c
and report all errors found in the IHDR data.
Eliminated useless call to png_check_cHRM() from pngset.c
-version 1.4.0beta83 [September 25, 2009]
+Version 1.4.0beta83 [September 25, 2009]
Revised png_check_IHDR() to eliminate bogus complaint about filter_type.
-version 1.4.0beta84 [September 30, 2009]
+Version 1.4.0beta84 [September 30, 2009]
Fixed some inconsistent indentation in pngconf.h
Revised png_check_IHDR() to add a test for width variable less than 32-bit.
-version 1.4.0beta85 [October 1, 2009]
+Version 1.4.0beta85 [October 1, 2009]
Revised png_check_IHDR() again, to check info_ptr members instead of
the contents of the returned parameters.
-version 1.4.0beta86 [October 9, 2009]
+Version 1.4.0beta86 [October 9, 2009]
Updated the "xcode" project (Alam Arias).
Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
-version 1.4.0rc01 [October 19, 2009]
+Version 1.4.0rc01 [October 19, 2009]
Trivial cosmetic changes.
-version 1.4.0beta87 [October 30, 2009]
+Version 1.4.0beta87 [October 30, 2009]
Moved version 1.4.0 back into beta.
-version 1.4.0beta88 [October 30, 2009]
+Version 1.4.0beta88 [October 30, 2009]
Revised libpng*.txt section about differences between 1.2.x and 1.4.0
because most of the new features have now been ported back to 1.2.41
-version 1.4.0beta89 [November 1, 2009]
+Version 1.4.0beta89 [November 1, 2009]
More bugfixes and improvements to CMakeLists.txt (Philip Lowman)
Removed a harmless extra png_set_invert_alpha() from pngwrite.c
Apply png_user_chunk_cache_max within png_decompress_chunk().
Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate.
-version 1.4.0beta90 [November 2, 2009]
+Version 1.4.0beta90 [November 2, 2009]
Removed all remaining WIN32_WCE #ifdefs except those involving the
time.h "tm" structure
-version 1.4.0beta91 [November 3, 2009]
+Version 1.4.0beta91 [November 3, 2009]
Updated scripts/pngw32.def and projects/wince/png32ce.def
Copied projects/wince/png32ce.def to the scripts directory.
Added scripts/makefile.wce
Patched ltmain.sh for wince support.
Added PNG_CONVERT_tIME_SUPPORTED macro.
-version 1.4.0beta92 [November 4, 2009]
+Version 1.4.0beta92 [November 4, 2009]
Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
Revised libpng*.txt to describe differences from 1.2.40 to 1.4.0 (instead
of differences from 1.2.41 to 1.4.0)
-version 1.4.0beta93 [November 7, 2009]
+Version 1.4.0beta93 [November 7, 2009]
Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
PNG_ALLOCATED macros to detect deprecated direct access to the
png_struct or info_struct members and other deprecated usage in
@@ -2322,13 +2480,13 @@
Moved the synopsis lines for png_read_destroy(), png_write_destroy()
png_debug(), png_debug1(), and png_debug2() from libpng.3 to libpngpf.3.
-version 1.4.0beta94 [November 9, 2009]
+Version 1.4.0beta94 [November 9, 2009]
Removed the obsolete, unused pnggccrd.c and pngvcrd.c files.
Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
Removed dependency of pngtest.o on pngpriv.h in the makefiles.
Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.
-version 1.4.0beta95 [November 10, 2009]
+Version 1.4.0beta95 [November 10, 2009]
Changed png_check_sig() to !png_sig_cmp() in contrib programs.
Added -DPNG_CONFIGURE_LIBPNG to contrib/pngminm/*/makefile
Changed png_check_sig() to !png_sig_cmp() in contrib programs.
@@ -2336,7 +2494,7 @@
Changed pngminim/*/gather.sh to stop trying to remove pnggccrd.c and pngvcrd.c
Added dependency on pngpriv.h in contrib/pngminim/*/makefile
-version 1.4.0beta96 [November 12, 2009]
+Version 1.4.0beta96 [November 12, 2009]
Renamed scripts/makefile.wce to scripts/makefile.cegcc
Revised Makefile.am to use libpng.sys while building libpng.so
so that only PNG_EXPORT functions are exported.
@@ -2346,42 +2504,42 @@
(evidently the same change made in libpng-1.0beta54 was lost).
Added PNG_PRIVATE macro definition in pngconf.h for possible future use.
-version 1.4.0beta97 [November 13, 2009]
+Version 1.4.0beta97 [November 13, 2009]
Restored pngtest.png to the libpng-1.4.0beta7 version.
Removed projects/beos and netware.txt; no one seems to be supporting them.
Revised Makefile.in
-version 1.4.0beta98 [November 13, 2009]
+Version 1.4.0beta98 [November 13, 2009]
Added the "xcode" project to zip distributions,
Fixed a typo in scripts/pngwin.def introduced in beta97.
-version 1.4.0beta99 [November 14, 2009]
+Version 1.4.0beta99 [November 14, 2009]
Moved libpng-config.in and libpng.pc-configure.in out of the scripts
directory, to libpng-config.in and libpng-pc.in, respectively, and
modified Makefile.am and configure.ac accordingly. Now "configure"
needs nothing from the "scripts" directory.
Avoid redefining PNG_CONST in pngconf.h
-version 1.4.0beta100 [November 14, 2009]
+Version 1.4.0beta100 [November 14, 2009]
Removed ASM builds from projects/visualc6 and projects/visualc71
Removed scripts/makefile.nommx and makefile.vcawin32
Revised CMakeLists.txt to account for new location of libpng-config.in
and libpng-pc.in
Updated INSTALL to reflect removal and relocation of files.
-version 1.4.0beta101 [November 14, 2009]
+Version 1.4.0beta101 [November 14, 2009]
Restored the binary files (*.jpg, *.png, some project files) that were
accidentally deleted from the zip and 7z distributions when the xcode
project was added.
-version 1.4.0beta102 [November 18, 2009]
+Version 1.4.0beta102 [November 18, 2009]
Added libpng-config.in and libpng-pc.in to the zip and 7z distributions.
Fixed a typo in projects/visualc6/pngtest.dsp, introduced in beta100.
Moved descriptions of makefiles and other scripts out of INSTALL into
scripts/README.txt
Updated the copyright year in scripts/pngwin.rc from 2006 to 2009.
-version 1.4.0beta103 [November 21, 2009]
+Version 1.4.0beta103 [November 21, 2009]
Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt
Align row_buf on 16-byte boundary in memory.
Restored the PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED guard around the call
@@ -2393,74 +2551,74 @@
jmp_buf buffer, and marked direct access to jmpbuf 'deprecated'.
(John Bowler)
-version 1.4.0beta104 [November 22, 2009]
+Version 1.4.0beta104 [November 22, 2009]
Removed png_longjmp_ptr from scripts/*.def and libpng.3
Rebuilt configure scripts with autoconf-2.65
-version 1.4.0beta105 [November 25, 2009]
+Version 1.4.0beta105 [November 25, 2009]
Use fast integer PNG_DIVIDE_BY_255() or PNG_DIVIDE_BY_65535()
to accomplish alpha premultiplication when
PNG_READ_COMPOSITE_NODIV_SUPPORTED is defined.
Changed "/255" to "/255.0" in background calculations to make it clear
that the 255 is used as a double.
-version 1.4.0beta106 [November 27, 2009]
+Version 1.4.0beta106 [November 27, 2009]
Removed premultiplied alpha feature.
-version 1.4.0beta107 [December 4, 2009]
+Version 1.4.0beta107 [December 4, 2009]
Updated README
Added "#define PNG_NO_PEDANTIC_WARNINGS" in the libpng source files.
Removed "-DPNG_CONFIGURE_LIBPNG" from the makefiles and projects.
Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco
to put png.h and pngconf.h in $prefix/include, like the other scripts,
instead of in $prefix/include/libpng. Also revised makefile.sco
- to put them in $prefix/include/libpng14 instead of in
- $prefix/include/libpng/libpng14.
+ to put them in $prefix/include/libpng15 instead of in
+ $prefix/include/libpng/libpng15.
-version 1.4.0beta108 [December 11, 2009]
+Version 1.4.0beta108 [December 11, 2009]
Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile
Relocated png_do_chop() to its original position in pngrtran.c; the
change in version 1.2.41beta08 caused transparency to be handled wrong
in some 16-bit datastreams (Yusaku Sugai).
-version 1.4.0beta109 [December 13, 2009]
+Version 1.4.0beta109 [December 13, 2009]
Added "bit_depth" parameter to the private png_build_gamma_table() function.
Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16 but the
PNG_16_TO_8 transform has been set, to avoid unnecessary build of 16-bit
tables.
-version 1.4.0rc02 [December 20, 2009]
+Version 1.4.0rc02 [December 20, 2009]
Declared png_cleanup_needed "volatile" in pngread.c and pngwrite.c
-version 1.4.0rc03 [December 22, 2009]
+Version 1.4.0rc03 [December 22, 2009]
Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt
(revising the change in 1.4.0beta99)
-version 1.4.0rc04 [December 25, 2009]
+Version 1.4.0rc04 [December 25, 2009]
Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED
in pngset.c to be consistent with other changes in version 1.2.38.
-version 1.4.0rc05 [December 25, 2009]
+Version 1.4.0rc05 [December 25, 2009]
Changed "libpng-pc.in" to "libpng.pc.in" in configure.ac, configure, and
Makefile.in to be consistent with changes in libpng-1.4.0rc03
-version 1.4.0rc06 [December 29, 2009]
+Version 1.4.0rc06 [December 29, 2009]
Reverted the gamma_table changes from libpng-1.4.0beta109.
Fixed some indentation errors.
-version 1.4.0rc07 [January 1, 2010]
+Version 1.4.0rc07 [January 1, 2010]
Revised libpng*.txt and libpng.3 about 1.2.x->1.4.x differences.
Use png_calloc() instead of png_malloc(); png_memset() in pngrutil.c
Update copyright year to 2010.
-version 1.4.0rc08 [January 2, 2010]
+Version 1.4.0rc08 [January 2, 2010]
Avoid deprecated references to png_ptr-io_ptr and png_ptr->error_ptr
in pngtest.c
-version 1.4.0 [January 3, 2010]
+Version 1.4.0 [January 3, 2010]
No changes.
-version 1.4.1beta01 [January 8, 2010]
+Version 1.4.1beta01 [January 8, 2010]
Updated CMakeLists.txt for consistent indentation and to avoid an
unclosed if-statement warning (Philip Lowman).
Revised Makefile.am and Makefile.in to remove references to Y2KINFO,
@@ -2472,28 +2630,28 @@
Revised Makefile.am and Makefile.in to simplify their maintenance.
Revised scripts/makefile.linux to install a link to libpng14.so.14.1
-version 1.4.1beta02 [January 9, 2010]
+Version 1.4.1beta02 [January 9, 2010]
Revised the rest of the makefiles to install a link to libpng14.so.14.1
-version 1.4.1beta03 [January 10, 2010]
+Version 1.4.1beta03 [January 10, 2010]
Removed png_set_premultiply_alpha() from scripts/*.def
-version 1.4.1rc01 [January 16, 2010]
+Version 1.4.1rc01 [January 16, 2010]
No changes.
-version 1.4.1beta04 [January 23, 2010]
+Version 1.4.1beta04 [January 23, 2010]
Revised png_decompress_chunk() to improve speed and memory usage when
decoding large chunks.
Added png_set|get_chunk_malloc_max() functions.
-version 1.4.1beta05 [January 26, 2010]
+Version 1.4.1beta05 [January 26, 2010]
Relocated "int k" declaration in pngtest.c to minimize its scope.
-version 1.4.1beta06 [January 28, 2010]
+Version 1.4.1beta06 [January 28, 2010]
Revised png_decompress_chunk() to use a two-pass method suggested by
John Bowler.
-version 1.4.1beta07 [February 6, 2010]
+Version 1.4.1beta07 [February 6, 2010]
Folded some long lines in the source files.
Added defineable PNG_USER_CHUNK_CACHE_MAX, PNG_USER_CHUNK_MALLOC_MAX,
and a PNG_USER_LIMITS_SUPPORTED flag.
@@ -2501,217 +2659,428 @@
png_ptr->png_user_chunk_malloc_max.
Revised png_push_save_buffer() to do fewer but larger png_malloc() calls.
-version 1.4.1beta08 [February 6, 2010]
+Version 1.4.1beta08 [February 6, 2010]
Minor cleanup and updating of dates and copyright year.
-version 1.4.1beta09 [February 7, 2010]
+Version 1.5.0beta01 [February 7, 2010]
+ Moved declaration of png_struct into private pngstruct.h and png_info
+ into pnginfo.h
+
+Version 1.4.1beta09 and 1.5.0beta02 [February 7, 2010]
Reverted to original png_push_save_buffer() code.
-version 1.4.1beta10 [February 9, 2010]
- Return allocated "old_buffer" in png_push_save_buffer() before calling
- png_error(), to avoid a potential memory leak.
+Version 1.4.1beta10 and 1.5.0beta03 [February 8, 2010]
+ Return allocated "old_buffer" in png_push_save_buffer() before
+ calling png_error(), to avoid a potential memory leak.
+ Updated configure script to use SO number 15.
-version 1.4.1beta11 [February 12, 2010]
- Relocated misplaced closing curley bracket in png_decompress_chunk().
- Removed unused "buffer_size" variable from png_decompress_chunk().
+Version 1.5.0beta04 [February 9, 2010]
+ Removed malformed "incomplete struct declaration" of png_info from png.h
+
+Version 1.5.0beta05 [February 12, 2010]
+ Removed PNG_DEPSTRUCT markup in pngstruct.h and pnginfo.h, and undid the
+ linewrapping that it entailed.
+ Revised comments in pngstruct.h and pnginfo.h and added pointers to
+ the libpng license.
+ Changed PNG_INTERNAL to PNG_EXPOSE_INTERNAL_STRUCTURES
Removed the cbuilder5 project, which has not been updated to 1.4.0.
- Complete rewrite of two-pass png_decompress_chunk() by John Bowler.
-version 1.4.1beta12 [February 14, 2010]
- Fixed type declaration of png_get_user_malloc_max() in pngget.c (Daisuke
+Version 1.4.1beta12 and 1.5.0beta06 [February 14, 2010]
+ Fixed type declaration of png_get_chunk_malloc_max() in pngget.c (Daisuke
Nishikawa)
-version 1.4.1rc02 [January 18, 2010]
- No changes.
+Version 1.5.0beta07 [omitted]
-version 1.4.1rc03 [February 19, 2010]
+Version 1.5.0beta08 [February 19, 2010]
+ Changed #ifdef PNG_NO_STDIO_SUPPORTED to #ifdef PNG_NO_CONSOLE_IO_SUPPORTED
+ wherever png_snprintf() is used to construct error and warning messages.
Noted in scripts/makefile.mingw that it expects to be run under MSYS.
Removed obsolete unused MMX-querying support from contrib/gregbook
+ Added exported png_longjmp() function.
Removed the AIX redefinition of jmpbuf in png.h
- Define _ALL_SOURCE in configure.ac, makefile.aix, and CMakeLists.txt
- when using AIX compiler.
+ Added -D_ALLSOURCE in configure.ac, makefile.aix, and CMakeLists.txt
+ when building on AIX.
-version 1.4.1rc04 [February 19, 2010]
+Version 1.5.0beta09 [February 19, 2010]
+ Removed -D_ALLSOURCE from configure.ac, makefile.aix, and CMakeLists.txt.
+ Changed the name of png_ptr->jmpbuf to png_ptr->png_jmpbuf in pngstruct.h
+
+Version 1.5.0beta10 [February 25, 2010]
Removed unused gzio.c from contrib/pngminim gather and makefile scripts
+ Removed replacement error handlers from contrib/gregbook. Because of
+ the new png_longjmp() function they are no longer needed.
-version 1.4.1 [February 25, 2010]
+Version 1.5.0beta11 [March 6, 2010]
+ Removed checking for already-included setjmp.h from pngconf.h
+ Fixed inconsistent indentations and made numerous cosmetic changes.
+ Revised the "SEE ALSO" style of libpng.3, libpngpf.3, and png.5
-version 1.4.2beta01 [April 1, 2010]
- Conditionally compile an "else" statement in png_decompress_chunk().
+Version 1.5.0beta12 [March 9, 2010]
+ Moved "#include png.h" inside pngpriv.h and removed "#include png.h" from
+ the source files, along with "#define PNG_EXPOSE_INTERNAL_STRUCTURES"
+ and "#define PNG_NO_PEDANTIC_WARNINGS" (John Bowler).
+ Created new pngdebug.h and moved debug definitions there.
+
+Version 1.5.0beta13 [March 10, 2010]
+ Protect pngstruct.h, pnginfo.h, and pngdebug.h from being included twice.
+ Revise the "#ifdef" blocks in png_inflate() so it will compile when neither
+ PNG_USER_CHUNK_MALLOC_MAX nor PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
+ is defined.
+ Removed unused png_measure_compressed_chunk() from pngpriv.h and libpngpf.3
+ Moved the 'config.h' support from pngconf.h to pngpriv.h
+ Removed PNGAPI from the png_longjmp_ptr typedef.
+ Eliminated dependence of pngtest.c on the private pngdebug.h file.
+ Make all png_debug macros into *unterminated* statements or
+ expressions (i.e. a trailing ';' must always be added) and correct
+ the format statements in various png_debug messages.
+
+Version 1.5.0beta14 [March 14, 2010]
+ Removed direct access to png_ptr->io_ptr from the Windows code in pngtest.c
+ Revised Makefile.am to account for recent additions and replacements.
+ Corrected CE and OS/2 DEF files (scripts/png*def) for symbols removed and
+ added ordinal numbers to the Windows DEF file and corrected the duplicated
+ ordinal numbers on CE symbols that are commented out.
+ Added back in export symbols that can be present in the Windows build but
+ are disabled by default.
+ PNG_EXPORT changed to include an 'ordinal' field for DEF file generation.
+ PNG_CALLBACK added to make callback definitions uniform. PNGAPI split
+ into PNGCAPI (base C form), PNGAPI (exports) and PNGCBAPI (callbacks),
+ and appropriate changes made to all files. Cygwin builds re-hinged to
+ allow procedure call standard changes and to remove the need for the DEF
+ file (fixes build on Cygwin).
+ Enabled 'attribute' warnings that are relevant to library APIs and callbacks.
+ Changed rules for generation of the various symbol files and added a new
+ rule for a DEF file (which is also added to the distribution).
+ Updated the symbol file generation to stop it adding spurious spaces
+ to EOL (coming from preprocessor macro expansion). Added a facility
+ to join tokens in the output and rewrite *.dfn to use this.
+ Eliminated scripts/*.def in favor of libpng.def; updated projects/visualc71
+ and removed scripts/makefile.cygwin.
+ Made PNG_BUILD_DLL safe: it can be set whenever a DLL is being built.
+ Removed the include of sys/types.h - apparently unnecessary now on the
+ platforms on which it happened (all but Mac OS and RISC OS).
+ Moved the Mac OS test into pngpriv.h (the only place it is used.)
+
+Version 1.5.0beta15 [March 17, 2010]
+ Added symbols.chk target to Makefile.am to validate the symbols in png.h
+ against the new DEF file scripts/symbols.def.
+ Changed the default DEF file back to pngwin.def.
+ Removed makefile.mingw.
+ Eliminated PNG_NO_EXTERN and PNG_ALL_EXTERN
+
+Version 1.5.0beta16 [April 1, 2010]
+ Make png_text_struct independent of PNG_iTXt_SUPPORTED, so that
+ fields are initialized in all configurations. The READ/WRITE
+ macros (PNG_(READ|WRITE)_iTXt_SUPPORTED) still function as
+ before to disable code to actually read or write iTXt chunks
+ and iTXt_SUPPORTED can be used to detect presence of either
+ read or write support (but it is probably better to check for
+ the one actually required - read or write.)
+ Combined multiple png_warning() calls for a single error.
Restored the macro definition of png_check_sig().
-version 1.4.2rc01 [April 10, 2010]
- No changes.
-
-version 1.4.2rc02 [April 16, 2010]
+Version 1.5.0beta17 [April 17, 2010]
+ Added some "(long)" typecasts to printf calls in png_handle_cHRM().
Documented the fact that png_set_dither() was disabled since libpng-1.4.0.
Reenabled png_set_dither() but renamed it to png_set_quantize() to reflect
more accurately what it actually does. At the same time, renamed
the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros to
PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS.
-
-version 1.4.2rc03 [April 24, 2010]
Added some "(long)" typecasts to printf calls in png_handle_cHRM().
+ Freeze build-time only configuration in the build.
+ In all prior versions of libpng most configuration options
+ controlled by compiler #defines had to be repeated by the
+ application code that used libpng. This patch changes this
+ so that compilation options that can only be changed at build
+ time are frozen in the build. Options that are compiler
+ dependent (and those that are system dependent) are evaluated
+ each time - pngconf.h holds these. Options that can be changed
+ per-file in the application are in png.h. Frozen options are
+ in the new installed header file pnglibconf.h (John Bowler)
+ Removed the xcode project because it has not been updated to work
+ with libpng-1.5.0.
+ Removed the ability to include optional pngusr.h
+
+Version 1.5.0beta18 [April 17, 2010]
+ Restored the ability to include optional pngusr.h
+ Moved replacements for png_error() and png_warning() from the
+ contrib/pngminim project to pngerror.c, for use when warnings or
+ errors are disabled via PNG_NO_WARN or PNG_NO_ERROR_TEXT, to avoid
+ storing unneeded error/warning text.
+ Updated contrib/pngminim project to work with the new pnglibconf.h
+ Added some PNG_NO_* defines to contrib/pngminim/*/pngusr.h to save space.
+
+Version 1.5.0beta19 [April 24, 2010]
+ Added PNG_{READ,WRITE}_INT_FUNCTIONS_SUPPORTED. This allows the functions
+ to read and write ints to be disabled independently of PNG_USE_READ_MACROS,
+ which allows libpng to be built with the functions even though the default
+ is to use the macros - this allows applications to choose at app build
+ time whether or not to use macros (previously impossible because the
+ functions weren't in the default build.)
+ Changed Windows calling convention back to __cdecl for API functions.
+ For Windows/x86 platforms only:
+ __stdcall is no longer needed for Visual Basic, so libpng-1.5.0 uses
+ __cdecl throughout (both API functions and callbacks) on Windows/x86
+ platforms.
+ Replaced visualc6 and visualc71 projects with new vstudio project
Relaxed the overly-restrictive permissions of some files.
-version 1.4.2rc04 [April 28, 2010]
- Added the "vstudio" project to replace "visualc6" and "visualc71" which
- will be removed from libpng-1.5.0.
- Demonstrate in example.c that lang_key should be initialized.
+Version 1.5.0beta20 [April 24, 2010]
+ Relaxed more overly-restrictive permissions of some files.
+
+Version 1.5.0beta21 [April 27, 2010]
+ Removed some unwanted binary bytes and changed CRLF to NEWLINE in the new
+ vstudio project files, and some trivial editing of some files in the
+ scripts directory.
Set PNG_NO_READ_BGR, PNG_NO_IO_STATE, and PNG_NO_TIME_RFC1123 in
contrib/pngminim/decoder/pngusr.h to make a smaller decoder application.
-version 1.4.2rc05 [April 29, 2010]
- Include png_reset_zstream() in png.c only when PNG_READ_SUPPORTED is defined.
- Removed dummy_inflate.c and uncompr.c from contrib/pngminim/encoder
+Version 1.5.0beta22 [April 28, 2010]
+ Fixed dependencies of GET_INT_32 - it does not require READ_INT_FUNCTIONS
+ because it has a macro equivalent.
+ Improved the options.awk script; added an "everything off" option.
+ Revised contrib/pngminim to use the "everything off" option in pngusr.dfa.
+
+Version 1.5.0beta23 [April 29, 2010]
+ Corrected PNG_REMOVED macro to take five arguments.
+ The macro was documented with two arguments (name,ordinal), however
+ the symbol checking .dfn files assumed five arguments. The five
+ argument form seems more useful so it is changed to that.
Corrected PNG_UNKNOWN_CHUNKS_SUPPORTED to PNG_HANDLE_AS_UNKNOWN_SUPPORTED
in gregbook/readpng2.c
Corrected protection of png_get_user_transform_ptr. The API declaration in
png.h is removed if both READ and WRITE USER_TRANSFORM are turned off
but was left defined in pngtrans.c
+ Added logunsupported=1 to cause pnglibconf.h to document disabled options.
+ This makes the installed pnglibconf.h more readable but causes no
+ other change. The intention is that users of libpng will find it
+ easier to understand if an API they need is missing.
+ Include png_reset_zstream() in png.c only when PNG_READ_SUPPORTED is defined.
+ Removed dummy_inflate.c from contrib/pngminim/encoder
+ Removed contrib/pngminim/*/gather.sh; gathering is now done in the makefile.
-version 1.4.2rc06 [May 3, 2010]
- Moved declarations of umsg[] inside the proper #ifdef blocks in pngrutil.c
+Version 1.5.0beta24 [May 7, 2010]
+ Use bitwise "&" instead of arithmetic mod in pngrutil.c calculation of the
+ offset of the png_ptr->rowbuf pointer into png_ptr->big_row_buf.
+ Added more blank lines for readability.
-version 1.4.2 [May 6, 2010]
-
-version 1.4.3beta01 [June 18, 2010]
- Added missing quotation marks in the aix block of configure.ac
- The new "vstudio" project was missing from the zip and 7z distributions.
+Version 1.5.0beta25 [June 18, 2010]
In pngpread.c: png_push_have_row() add check for new_row > height
-
-version 1.4.3beta02 [June 18, 2010]
Removed the now-redundant check for out-of-bounds new_row from example.c
-version 1.4.3beta03 [June 18, 2010]
- In pngpread.c: png_push_finish_row() add check for too many rows.
-
-version 1.4.3beta04 [June 19, 2010]
+Version 1.5.0beta26 [June 18, 2010]
In pngpread.c: png_push_process_row() add check for too many rows.
- Removed the checks added in beta01 and beta03, as they are now redundant.
-version 1.4.3beta05 [June 20, 2010]
+Version 1.5.0beta27 [June 18, 2010]
+ Removed the check added in beta25 as it is now redundant.
+
+Version 1.5.0beta28 [June 20, 2010]
Rewrote png_process_IDAT_data to consistently treat extra data as warnings
and handle end conditions more cleanly.
- Removed the new (beta04) check in png_push_process_row().
+ Removed the new (beta26) check in png_push_process_row().
-version 1.4.3rc01 [June 21, 2010]
- Revised some comments in png_process_IDAT_data().
+Version 1.5.0beta29 [June 21, 2010]
+ Revised scripts/options.awk to work on Sunos (but still doesn't work)
+ Added comment to options.awk and contrib/pngminim/*/makefile to try nawk.
-version 1.4.3rc02 [June 22, 2010]
- Changed char *msg to PNG_CONST char *msg in pngrutil.c
+Version 1.5.0beta30 [June 22, 2010]
Stop memory leak when reading a malformed sCAL chunk.
+
+Version 1.5.0beta31 [June 26, 2010]
+ Revised pngpread.c patch of beta28 to avoid an endless loop.
Removed some trailing blanks.
-version 1.4.3rc03 [June 23, 2010]
- Revised pngpread.c patch of beta05 to avoid an endless loop.
+Version 1.5.0beta32 [June 26, 2010]
+ Removed leftover scripts/options.patch and scripts/options.rej
-version 1.4.3 [June 26, 2010]
- Updated some of the "last changed" dates.
-
-version 1.4.4beta01 [July 12, 2010]
- Removed extraneous new_push_process_row.c file.
- Revised the "SEE ALSO" style of libpng.3, libpngpf.3, and png.5
- Removed some newly-added TAB characters from pngpread.c.
- Fixed some indentation in pngpread.c and pngrutil.c
+Version 1.5.0beta33 [July 6, 3010]
+ Made FIXED and FLOATING options consistent in the APIs they enable and
+ disable. Corrected scripts/options.awk to handle both command line
+ options and options specified in the .dfa files.
+ Changed char *msg to PNG_CONST char *msg in pngrutil.c
+ Make png_set_sRGB_gAMA_and_cHRM set values using either the fixed or
+ floating point APIs, but not both.
+ Reversed patch to remove error handler when the jmp_buf is stored in the
+ main program structure, not the png_struct.
+ The error handler is needed because the default handler in libpng will
+ always use the jmp_buf in the library control structure; this is never
+ set. The gregbook code is a useful example because, even though it
+ uses setjmp/longjmp, it shows how error handling can be implemented
+ using control mechanisms not directly supported by libpng. The
+ technique will work correctly with mechanisms such as Microsoft
+ Structure Exceptions or C++ exceptions (compiler willing - note that gcc
+ does not by default support interworking of C and C++ error handling.)
+ Reverted changes to call png_longjmp in contrib/gregbook where it is not
+ appropriate. If mainprog->jmpbuf is used by setjmp, then png_longjmp
+ cannot be used.
Changed "extern PNG_EXPORT" to "PNG_EXPORT" in png.h (Jan Nijtmans)
Changed "extern" to "PNG_EXTERN" in pngpriv.h (except for the 'extern "C" {')
- Put "#ifndef PNG_EXTERN, #endif" around "#define PNG_EXTERN" in pngpriv.h
-version 1.4.4beta02 [July 24, 2010]
+Version 1.5.0beta34 [July 12, 2010]
+ Put #ifndef PNG_EXTERN, #endif around the define PNG_EXTERN in pngpriv.h
+
+Version 1.5.0beta35 [July 24, 2010]
+ Removed some newly-added TAB characters.
Added -DNO_PNG_SNPRINTF to CFLAGS in scripts/makefile.dj2
Moved the definition of png_snprintf() outside of the enclosing
#ifdef blocks in pngconf.h
- Added a special case typedef of png_longjmp_ptr for WATCOM.
-version 1.4.4beta03 [July 24, 2010]
- Removed reference to cbuilder5/* from Makefile.in and Makefile.am
- Eliminated the new special case typedef of png_longjmp_ptr for WATCOM
- and made a special case "#define PNGAPI" in pngconf.h instead.
+Version 1.5.0beta36 [July 29, 2010]
+ Patches by John Bowler:
+ Fixed point APIs are now supported throughout (no missing APIs).
+ Internal fixed point arithmetic support exists for all internal floating
+ point operations.
+ sCAL validates the floating point strings it is passed.
+ Safe, albeit rudimentary, Watcom support is provided by PNG_API_RULE==2
+ Two new APIs exist to get the number of passes without turning on the
+ PNG_INTERLACE transform and to get the number of rows in the current
+ pass.
+ A new test program, pngvalid.c, validates the gamma code.
+ Errors in the 16-bit gamma correction (overflows) have been corrected.
+ cHRM chunk testing is done consistently (previously the floating point
+ API bypassed it, because the test really didn't work on FP, now the test
+ is performed on the actual values to be stored in the PNG file so it
+ works in the FP case too.)
+ Most floating point APIs now simply call the fixed point APIs after
+ converting the values to the fixed point form used in the PNG file.
+ The standard headers no longer include zlib.h, which is currently only
+ required for pngstruct.h and can therefore be internal.
+ Revised png_get_int_32 to undo the PNG two's complement representation of
+ negative numbers.
-version 1.4.4beta04 [July 31, 2010]
- Updated the read macros and functions from 1.5.0beta38.
+Version 1.5.0beta37 [July 30, 2010]
+ Added a typecast in png_get_int_32() in png.h and pngrutil.h to avoid
+ a compiler warning.
+ Replaced oFFs 0,0 with oFFs -10,20 in pngtest.png
-version 1.4.4beta05 [August 6, 2010]
- Updated projects/visualc71 so it can find scripts/pnglibconf.h
- Removed unused png_mem_* defines from pngconf.h.
+Version 1.5.0beta38 [July 31, 2010]
+ Implemented remaining "_fixed" functions.
+ Corrected a number of recently introduced warnings mostly resulting from
+ safe but uncast assignments to shorter integers. Also added a zlib
+ VStudio release library project because the latest zlib Official Windows
+ build does not include such a thing.
+ Revised png_get_int_16() to be similar to png_get_int_32().
+ Restored projects/visualc71.
+
+Version 1.5.0beta39 [August 2, 2010]
+ VisualC/GCC warning fixes, VisualC build fixes
+ The changes include support for function attributes in VC in addition to
+ those already present in GCC - necessary because without these some
+ warnings are unavoidable. Fixes include signed/unsigned fixes in
+ pngvalid and checks with gcc -Wall -Wextra -Wunused.
+ VC requires function attributes on function definitions as well as
+ declarations, PNG_FUNCTION has been added to enable this and the
+ relevant function definitions changed.
+
+Version 1.5.0beta40 [August 6, 2010]
Correct use of _WINDOWS_ in pngconf.h
+ Removed png_mem_ #defines; they are no longer used.
+ Added the sRGB chunk to pngtest.png
-version 1.4.4beta06 [August 11, 2010]
+Version 1.5.0beta41 [August 11, 2010]
+ Added the cHRM chunk to pngtest.png
Don't try to use version-script with cygwin/mingw.
Revised contrib/gregbook to work under cygwin/mingw.
-version 1.4.4beta07 [August 26, 2010]
- Updated prebuilt aclocal.m4 and ltmain.sh
+Version 1.5.0beta42 [August 18, 2010]
Add .dll.a to the list of extensions to be symlinked by Makefile.am (Yaakov)
+ Made all API functions that have const arguments and constant string
+ literal pointers declare them (John Bowler).
+
+Version 1.5.0beta43 [August 20, 2010]
+ Removed spurious tabs, shorten long lines (no source change)
+ Also added scripts/chkfmt to validate the format of all the files that can
+ reasonably be validated (it is suggested to run "make distclean" before
+ checking, because some machine generated files have long lines.)
+ Reformatted the CHANGES file to be more consistent throughout.
+ Made changes to address various issues identified by GCC, mostly
+ signed/unsigned and shortening problems on assignment but also a few
+ difficult to optimize (for GCC) loops.
+ Fixed non-GCC fixed point builds. In png.c a declaration was misplaced
+ in an earlier update. Fixed to declare the auto variables at the head.
+ Use cexcept.h in pngvalid.c.
+
+Version 1.5.0beta44 [August 24, 2010]
Updated CMakeLists.txt to use CMAKE_INSTALL_LIBDIR variable; useful for
installing libpng in /usr/lib64 (Funda Wang).
Revised CMakeLists.txt to put the man pages in share/man/man* not man/man*
Revised CMakeLists.txt to make symlinks instead of copies when installing.
Changed PNG_LIB_NAME from pngNN to libpngNN in CMakeLists.txt (Philip Lowman)
- Moved "#include pngusr.h" ahead of PNG_USER_PRIVATEBUILD test in pngconf.h
- Eliminated a deprecated reference to png_ptr->io_ptr in pngtest.c
- Eliminated new unnecessary #if tests regarding the sCAL chunk from pngrutil.c
+ Implemented memory checks within pngvalid
+ Reformatted/rearranged pngvalid.c to assist use of progressive reader.
+ Check interlaced images in pngvalid
+ Clarified pngusr.h comments in pnglibconf.dfa
+ Simplified the pngvalid error-handling code now that cexcept.h is in place.
+ Implemented progressive reader in pngvalid.c for standard tests
+ Implemented progressive read in pngvalid.c gamma tests
+ Turn on progressive reader in pngvalid.c by default and tidy code.
-version 1.4.4beta08 [September 2, 2010]
- Updated the xcode project to work with libpng-1.4.x and added iOS targets
- for simulator and device (Philippe Hausler).
+Version 1.5.0beta45 [August 26, 2010]
+ Added an explicit make step to projects/vstudio for pnglibconf.h
+ Also corrected zlib.vcxproj into which Visual Studio had introduced
+ what it calls an "authoring error". The change to make pnglibconf.h
+ simply copies the file; in the future it may actually generate the
+ file from scripts/pnglibconf.dfa as the other build systems do.
+ Changed pngvalid to work when floating point APIs are disabled
+ Renamed the prebuilt scripts/pnglibconf.h to scripts/pnglibconf.h.prebuilt
+ Supply default values for PNG_USER_PRIVATEBUILD and PNG_USER_DLLFNAME_POSTFIX
+ in pngpriv.h in case the user neglected to define them in their pngusr.h
-version 1.4.4rc01 [September 10, 2010]
- No changes.
+Version 1.5.0beta46 [August 28, 2010]
+ Added new private header files to libpng_sources in CMakeLists.txt
+ Added PNG_READ_16BIT, PNG_WRITE_16BIT, and PNG_16BIT options.
+ Added reference to scripts/pnglibconf.h.prebuilt in the visualc71 project.
-version 1.4.4rc02 [September 13, 2010]
- Revised CMakeLists.txt (Philip Lowman).
+Version 1.5.0beta47 [September 11, 2010]
+ Fixed a number of problems with 64-bit compilation reported by Visual
+ Studio 2010 (John Bowler).
-version 1.4.4rc03 [September 14, 2010]
- Removed an extraneous close-double-quote from CMakeLists.txt
- Eliminated another deprecated reference to png_ptr->io_ptr in pngtest.c
-
-version 1.4.4rc04 [September 16, 2010]
- Fixed indentation and removed debugging message from CMakeLists.txt
+Version 1.5.0beta48 [October 4, 2010]
+ Updated CMakeLists.txt (Philip Lowman).
Revised autogen.sh to recognize and use $AUTOCONF, $AUTOMAKE, $AUTOHEADER,
$AUTOPOINT, $ACLOCAL and $LIBTOOLIZE
-
-version 1.4.4rc05 [September 20, 2010]
- Rebuilt configure scripts with automake-1.11.1 instead of automake-1.11.
- Removed unused mkinstalldirs file.
-
-version 1.4.4 [September 23, 2010]
- No changes.
-
-version 1.4.5beta01 [September 25, 2010]
- Fixed possible configure.ac bug introduced in version 1.4.4rc05.
- Rebuilt configure scripts with autoconf-2.68 instead of autoconf-2.65
-
-version 1.4.5beta02 [October 5, 2010]
- Reverted configure scripts to autoconf-2.65
Fixed problem with symbols creation in Makefile.am which was assuming that
- all versions of cpp write to standard output by default (Martin Banky). The
+ all versions of ccp write to standard output by default (Martin Banky). The
bug was introduced in libpng-1.2.9beta5.
+ Removed unused mkinstalldirs.
-version 1.4.5beta03 [October 8, 2010]
- Wrapped long lines in CMakeLists.txt and introduced ${libpng_public_hdrs}
- Undid Makefile.am revision of 1.4.5beta02.
+Version 1.5.0beta49 [October 8, 2010]
+ Undid Makefile.am revision of 1.5.0beta48.
-version 1.4.5beta04 [November 8, 2010]
+Version 1.5.0beta50 [October 14, 2010]
+ Revised Makefile.in to account for mkinstalldirs being removed.
+ Added some "(unsigned long)" typecasts in printf statements in pngvalid.c.
+ Suppressed a compiler warning in png_handle_sPLT().
Check for out-of-range text compression mode in png_set_text().
-version 1.4.5rc01 [November 19, 2010]
- No changes.
+Version 1.5.0beta51 [October 15, 2010]
+ Changed embedded dates to "(PENDING RELEASE) in beta releases (and future
+ rc releases) to minimize the difference between releases.
-version 1.4.5beta05 [November 20, 2010]
+Version 1.5.0beta52 [October 16, 2010]
+ Restored some of the embedded dates (in png.h, png.c, documentation, etc.)
+
+Version 1.5.0beta53 [October 18, 2010]
+ Updated INSTALL to mention using "make maintainer-clean" and to remove
+ obsolete statement about a custom ltmain.sh
+ Disabled "color-tests" by default in Makefile.am so it will work with
+ automake versions earlier than 1.11.1
+ Use document name "libpng-manual.txt" instead of "libpng-<version>.txt"
+ to simplify version differences.
+ Removed obsolete remarks about setjmp handling from INSTALL.
+ Revised and renamed the typedef in png.h and png.c that was designed
+ to catch library and header mismatch.
+
+Version 1.5.0beta54 [November 10, 2010]
+ Require 48 bytes, not 64 bytes, for big_row_buf in overflow checks.
+ Used a consistent structure for the pngget.c functions.
+
+Version 1.5.0beta55 [November 21, 2010]
Revised png_get_uint_32, png_get_int_32, png_get_uint_16 (Cosmin)
Moved reading of file signature into png_read_sig (Cosmin)
Fixed atomicity of chunk header serialization (Cosmin)
Added test for io_state in pngtest.c (Cosmin)
Added "#!/bin/sh" at the top of contrib/pngminim/*/gather.sh scripts.
-
-version 1.4.5beta06 [November 21, 2010]
- Restored the parentheses in pngrutil.c; they are needed when the
- png_get_*int_*() functions are compiled (i.e., when PNG_USE_READ_MACROS
- is not defined).
- Make the "png_get_uint_16" macro return a png_uint_32 in libpng-1.4 for API
- compatibility.
Changes to remove gcc warnings (John Bowler)
Certain optional gcc warning flags resulted in warnings in libpng code.
With these changes only -Wconversion and -Wcast-qual cannot be turned on.
@@ -2721,119 +3090,741 @@
with pngwio.c and pngwutil.c because the 'write' callback and zlib
compression both fail to declare their input buffers with 'const'.
-version 1.4.5beta07 [November 25, 2010]
- Reverted png_get_uint_16 macro to beta05 and added comment about the
- potential API incompatibility.
+Version 1.5.0beta56 [December 7, 2010]
+ Added the private PNG_UNUSED() macro definition in pngpriv.h.
+ Added some commentary about PNG_EXPORT in png.h and pngconf.h
+ Revised PNG_EXPORT() macro and added PNG_EXPORTA() macro, with the
+ objective of simplifying and improving the cosmetic appearance of png.h.
+ Fixed some incorrect "=" macro names in pnglibconf.dfa
+ Included documentation of changes in 1.5.0 from 1.4.x in libpng-manual.txt
-version 1.4.5rc02 [December 2, 2010]
+Version 1.5.0beta57 [December 9, 2010]
+ Documented the pngvalid gamma error summary with additional comments and
+ print statements.
+ Improved missing symbol handling in checksym.awk; symbols missing in both
+ the old and new files can now be optionally ignored, treated as errors
+ or warnings.
+ Removed references to pngvcrd.c and pnggccrd.c from the vstudio project.
+ Updated "libpng14" to "libpng15" in the visualc71 project.
+ Enabled the strip16 tests in pngvalid.`
+ Don't display test results (except PASS/FAIL) when running "make test".
+ Instead put them in pngtest-log.txt
+ Added "--with-zprefix=<string>" to configure.ac
+ Updated the prebuilt configuration files to autoconf version 2.68
+
+Version 1.5.0beta58 [December 19, 2010]
+ Fixed interlace image handling and add test cases (John Bowler)
+ Fixed the clean rule in Makefile.am to remove pngtest-log.txt
+ Made minor changes to work around warnings in gcc 3.4
+
+Version 1.5.0rc01 [December 27, 2010]
No changes.
-version 1.4.5rc03 [December 3, 2010]
- Added missing vstudio/*/*.vcxproj files to the zip and 7z distributions.
+Version 1.5.0rc02 [December 27, 2010]
+ Eliminated references to the scripts/*.def files in project/visualc71.
-version 1.4.5 [December 9, 2010]
- Removed PNG_NO_WRITE_GAMMA from pngminim/encoder/pngusr.h
+Version 1.5.0rc03 [December 28, 2010]
+ Eliminated scripts/*.def and revised Makefile.am accordingly
-version 1.4.6beta01 [December 29, 2010]
+Version 1.5.0rc04 [December 29, 2010]
Fixed bug in background transformation handling in pngrtran.c (it was
looking for the flag in png_ptr->transformations instead of in
png_ptr->flags) (David Raymond).
-version 1.4.6beta02 [January 14, 2011]
- Fixed misspelled macros in contrib/pngminim (Cosmin).
- Updated CMakeLists.txt (Clifford Yapp).
+Version 1.5.0rc05 [December 31, 2010]
+ Fixed typo in a comment in CMakeLists.txt (libpng14 => libpng15) (Cosmin)
-version 1.4.6beta03 [January 14, 2011]
- Fixed some typecasts in png_debug statements (Cosmin).
+Version 1.5.0rc06 [January 4, 2011]
+ Changed the new configure option "zprefix=string" to "zlib-prefix=string"
-version 1.4.6beta04 [January 22, 2011]
+Version 1.5.0rc07 [January 4, 2011]
+ Updated copyright year.
+
+Version 1.5.0 [January 6, 2011]
+ No changes.
+
+version 1.5.1beta01 [January 8, 2011]
+ Added description of png_set_crc_action() to the manual.
+ Added a note in the manual that the type of the iCCP profile was changed
+ from png_charpp to png_bytepp in png_get_iCCP(). This change happened
+ in version 1.5.0beta36 but is not noted in the CHANGES. Similarly,
+ it was changed from png_charpp to png_const_bytepp in png_set_iCCP().
+ Ensure that png_rgb_to_gray ignores palette mapped images, if libpng
+ internally happens to call it with one, and fixed a failure to handle
+ palette mapped images correctly. This fixes CVE-2690.
+
+Version 1.5.1beta02 [January 14, 2011]
+ Fixed a bug in handling of interlaced images (bero at arklinux.org).
+ Updated CMakeLists.txt (Clifford Yapp)
+
+Version 1.5.1beta03 [January 14, 2011]
+ Fixed typecasting of some png_debug() statements (Cosmin)
+
+Version 1.5.1beta04 [January 16, 2011]
Updated documentation of png_set|get_tRNS() (Thomas Klausner).
- Added png_const_structp and png_const_infop types, and used them in
- prototypes for most png_get_*() functions.
+ Mentioned in the documentation that applications must #include "zlib.h"
+ if they need access to anything in zlib.h, and that a number of
+ macros such as png_memset() are no longer accessible by applications.
+ Corrected pngvalid gamma test "sample" function to access all of the color
+ samples of each pixel, instead of sampling the red channel three times.
+ Prefixed variable names index, div, exp, gamma with "png_" to avoid "shadow"
+ warnings, and (mistakenly) changed png_exp() to exp().
+
+Version 1.5.1beta05 [January 16, 2011]
+ Changed variable names png_index, png_div, png_exp, and png_gamma to
+ char_index, divisor, exp_b10, and gamma_val, respectively, and
+ changed exp() back to png_exp().
+
+Version 1.5.1beta06 [January 20, 2011]
+ Prevent png_push_crc_skip() from hanging while reading an unknown chunk
+ or an over-large compressed zTXt chunk with the progressive reader.
+ Eliminated more GCC "shadow" warnings.
+ Revised png_fixed() in png.c to avoid compiler warning about reaching the
+ end without returning anything.
+
+Version 1.5.1beta07 [January 22, 2011]
In the manual, describe the png_get_IHDR() arguments in the correct order.
- Ported change in png_do_rgb_to_gray() from libpng-1.5.1, to make
- it more robust against internal libpng coding errors.
+ Added const_png_structp and const_png_infop types, and used them in
+ prototypes for most png_get_*() functions.
-version 1.4.6beta05 [January 23, 2011]
+Version 1.5.1beta08 [January 23, 2011]
+ Added png_get_io_chunk_type() and deprecated png_get_io_chunk_name()
+ Added synopses for the IO_STATE functions and other missing synopses
+ to the manual. Removed the synopses from libpngpf.3 because they
+ were out of date and no longer useful. Better information can be
+ obtained by reading the prototypes and comments in pngpriv.h
+ Attempted to fix cpp on Solaris with S. Studio 12 cc, fix build
+ Added a make macro DFNCPP that is a CPP that will accept the tokens in
+ a .dfn file and adds configure stuff to test for such a CPP. ./configure
+ should fail if one is not available.
+ Corrected const_png_ in png.h to png_const_ to avoid polluting the namespace.
+ Added png_get_current_row_number and png_get_current_pass_number for the
+ benefit of the user transform callback.
+ Added png_process_data_pause and png_process_data_skip for the benefit of
+ progressive readers that need to stop data processing or want to optimize
+ skipping of unread data (e.g., if the reader marks a chunk to be skipped.)
- Updated the synopses in the manual to reflect recent changes.
- Fixed a typo in the *.def files and deleted entries that are now
- declared in pngpriv.h
+Version 1.5.1beta09 [January 24, 2011]
+ Enhanced pngvalid, corrected an error in gray_to_rgb, corrected doc error.
+ pngvalid contains tests of transforms, which tests are currently disabled
+ because they are incompletely tested. gray_to_rgb was failing to expand
+ the bit depth for smaller bit depth images; this seems to be a long
+ standing error and resulted, apparently, in invalid output
+ (CVE-2011-0408, CERT VU#643140). The documentation did not accurately
+ describe what libpng really does when converting RGB to gray.
-version 1.4.6beta06 [March 19, 2011]
- Updated contrib/pngsuite/README to add the word "modify".
- Added the private PNG_UNUSED() macro definition in pngconf.h.
-
-version 1.4.6beta07 [March 22, 2011]
- ifdef out mask arrays in pngread.c when interlacing is not supported.
- Added attribute definition (warnings) for MSC_VER >= 1300 in pngconf.h
- Added -D_CRT_SECURE_NO_DEPRECATE to CFLAGS in makefile.vcwin32
- Fixed mistake in the descriptions of user read_transform and write_transform
- function prototypes in the manual. The row_info struct is png_row_infop.
- Added a request in the manual that applications do not use "png_" or
- "PNG_" to begin any of their own symbols.
+Version 1.5.1beta10 [January 27, 2010]
Fixed incorrect examples of callback prototypes in the manual, that were
introduced in libpng-1.0.0.
- Removed "strip" from contrib/pngminim/*/makefile.
+ In addition the order of the png_get_uint macros with respect to the
+ relevant function definitions has been reversed. This helps the
+ preprocessing of the symbol files be more robust. Furthermore, the
+ symbol file preprocessing now uses -DPNG_NO_USE_READ_MACROS even when
+ the library may actually be built with PNG_USE_READ_MACROS; this stops
+ the read macros interfering with the symbol file format.
+ Made the manual, synopses, and function prototypes use the function
+ argument names file_gamma, int_file_gamma, and srgb_intent consistently.
+
+Version 1.5.1beta11 [January 28, 2011]
+ Changed PNG_UNUSED from "param=param;" to "{if(param){}}".
+ Corrected local variable type in new API png_process_data_skip()
+ The type was self-evidently incorrect but only causes problems on 64-bit
+ architectures.
+ Added transform tests to pngvalid and simplified the arguments.
+
+Version 1.5.1rc01 [January 29, 2011]
+ No changes.
+
+Version 1.5.1rc02 [January 31, 2011]
+ Added a request in the manual that applications do not use "png_" or
+ "PNG_" to begin any of their own symbols.
+ Changed PNG_UNUSED to "(void)param;" and updated the commentary in pngpriv.h
+
+Version 1.5.1 [February 3, 2011]
+ No changes.
+
+Version 1.5.2beta01 [February 13, 2011]
+ More -Wshadow fixes for older gcc compilers. Older gcc versions apparently
+ check formal parameters names in function declarations (as well as
+ definitions) to see if they match a name in the global namespace.
+ Revised PNG_EXPORTA macro to not use an empty parameter, to accommodate the
+ old VisualC++ preprocessor.
+ Turned on interlace handling in png_read_png().
+ Fixed gcc pendantic warnings.
+ Handle longjmp in Cygwin.
+ Fixed png_get_current_row_number() in the interlaced case.
+ Cleaned up ALPHA flags and transformations.
+ Implemented expansion to 16 bits.
+
+Version 1.5.2beta02 [February 19, 2011]
+ Fixed mistake in the descriptions of user read_transform and write_transform
+ function prototypes in the manual. The row_info struct is png_row_infop.
+ Reverted png_get_current_row_number() to previous (1.5.2beta01) behavior.
+ Corrected png_get_current_row_number documentation
+ Fixed the read/write row callback documentation.
+ This documents the current behavior, where the callback is called after
+ every row with information pertaining to the next row.
+
+Version 1.5.2beta03 [March 3, 2011]
+ Fixed scripts/makefile.vcwin32
+ Updated contrib/pngsuite/README to add the word "modify".
+ Define PNG_ALLOCATED to blank when _MSC_VER<1300.
+
+Version 1.5.2rc01 [March 19, 2011]
+ Define remaining attributes to blank when MSC_VER<1300.
+ ifdef out mask arrays in pngread.c when interlacing is not supported.
+
+Version 1.5.2rc02 [March 22, 2011]
+ Added a hint to try CPP=/bin/cpp if "cpp -E" fails in scripts/pnglibconf.mak
+ and in contrib/pngminim/*/makefile, eg., on SunOS 5.10, and removed "strip"
+ from the makefiles.
Fixed a bug (present since libpng-1.0.7) that makes png_handle_sPLT() fail
to compile when PNG_NO_POINTER_INDEXING is defined (Chubanov Kirill)
-version 1.4.6rc01 [March 31, 2011]
+Version 1.5.2rc03 [March 24, 2011]
+ Don't include standard header files in png.h while building the symbol table,
+ to avoid cpp failure on SunOS (introduced PNG_BUILDING_SYMBOL_TABLE macro).
+
+Version 1.5.2 [March 31, 2011]
No changes.
-version 1.4.6rc02 [April 6, 2011]
+Version 1.5.3beta01 [April 1, 2011]
+ Re-initialize the zlib compressor before compressing non-IDAT chunks.
+ Added API functions (png_set_text_compression_level() and four others) to
+ set parameters for zlib compression of non-IDAT chunks.
+
+Version 1.5.3beta02 [April 3, 2011]
+ Updated scripts/symbols.def with new API functions.
+ Only compile the new zlib re-initializing code when text or iCCP is
+ supported, using PNG_WRITE_COMPRESSED_TEXT_SUPPORTED macro.
Improved the optimization of the zlib CMF byte (see libpng-1.2.6beta03).
+ Optimize the zlib CMF byte in non-IDAT compressed chunks
-version 1.4.6 [April 8, 2011]
- No changes.
+Version 1.5.3beta03 [April 16, 2011]
+ Fixed gcc -ansi -pedantic compile. A strict ANSI system does not have
+ snprintf, and the "__STRICT_ANSI__" detects that condition more reliably
+ than __STDC__ (John Bowler).
+ Removed the PNG_PTR_NORETURN attribute because it too dangerous. It tells
+ the compiler that a user supplied callback (the error handler) does not
+ return, yet there is no guarantee in practice that the application code
+ will correctly implement the error handler because the compiler only
+ issues a warning if there is a mistake (John Bowler).
+ Removed the no-longer-used PNG_DEPSTRUCT macro.
+ Updated the zlib version to 1.2.5 in the VStudio project.
+ Fixed 64-bit builds where png_uint_32 is smaller than png_size_t in
+ pngwutil.c (John Bowler).
+ Fixed bug with stripping the filler or alpha channel when writing, that
+ was introduced in libpng-1.5.2beta01 (bug report by Andrew Church).
-version 1.4.7rc01 [April 9, 2011]
- Relocated misplaced new declarations in pngwutil.c.
+Version 1.5.3beta04 [April 27, 2011]
+ Updated pngtest.png with the new zlib CMF optimization.
+ Cleaned up conditional compilation code and of background/gamma handling
+ Internal changes only except a new option to avoid compiling the
+ png_build_grayscale_palette API (which is not used at all internally.)
+ The main change is to move the transform tests (READ_TRANSFORMS,
+ WRITE_TRANSFORMS) up one level to the caller of the APIs. This avoids
+ calls to spurious functions if all transforms are disabled and slightly
+ simplifies those functions. Pngvalid modified to handle this.
+ A minor change is to stop the strip_16 and expand_16 interfaces from
+ disabling each other; this allows the future alpha premultiplication
+ code to use 16-bit intermediate values while still producing 8-bit output.
+ png_do_background and png_do_gamma have been simplified to take a single
+ pointer to the png_struct rather than pointers to every item required
+ from the png_struct. This makes no practical difference to the internal
+ code.
+ A serious bug in the pngvalid internal routine 'standard_display_init' has
+ been fixed - this failed to initialize the red channel and accidentally
+ initialized the alpha channel twice.
+ Changed png_struct jmp_buf member name from png_jmpbuf to tmp_jmpbuf to
+ avoid a possible clash with the png_jmpbuf macro on some platforms.
-version 1.4.7 [April 9, 2011]
- Disabled PNG_PEDANTIC_WARNINGS for all MSC versions as in libpng-1.4.5.
-
-version 1.4.8beta01 [June 4, 2011]
- Undef "_ALL_SOURCE" for AIX, to prevent "jmpbuf" from being redefined.
- Copied png_debug macros from pngpriv.h into pngtest.c and removed
- "#include pngpriv.h" from pngtest.c, to avoid setting a bad example.
+Version 1.5.3beta05 [May 6, 2011]
+ Added the "_POSIX_SOURCE" feature test macro to ensure libpng sees the
+ correct API. _POSIX_SOURCE is defined in pngpriv.h, pngtest.c and
+ pngvalid.c to ensure that POSIX conformant systems disable non-POSIX APIs.
+ Removed png_snprintf and added formatted warning messages. This change adds
+ internal APIs to allow png_warning messages to have parameters without
+ requiring the host OS to implement snprintf. As a side effect the
+ dependency of the tIME-supporting RFC1132 code on stdio is removed and
+ PNG_NO_WARNINGS does actually work now.
Pass "" instead of '\0' to png_default_error() in png_err(). This mistake
- was introduced in libpng-1.2.20beta01.
+ was introduced in libpng-1.2.20beta01. This fixes CVE-2011-2691.
+ Added PNG_WRITE_OPTIMIZE_CMF_SUPPORTED macro to make the zlib "CMF" byte
+ optimization configureable.
+ IDAT compression failed if preceded by a compressed text chunk (bug
+ introduced in libpng-1.5.3beta01-02). This was because the attempt to
+ reset the zlib stream in png_write_IDAT happened after the first IDAT
+ chunk had been deflated - much too late. In this change internal
+ functions were added to claim/release the z_stream and, hopefully, make
+ the code more robust. Also deflateEnd checking is added - previously
+ libpng would ignore an error at the end of the stream.
+
+Version 1.5.3beta06 [May 8, 2011]
+ Removed the -D_ALL_SOURCE from definitions for AIX in CMakeLists.txt
+ Implemented premultiplied alpha support: png_set_alpha_mode API
+
+Version 1.5.3beta07 [May 11, 2011]
+ Added expand_16 support to the high level interface.
+ Added named value and 'flag' gamma support to png_set_gamma. Made a minor
+ change from the previous (unreleased) ABI/API to hide the exact value used
+ for Macs - it's not a good idea to embed this in the ABI!
+ Moved macro definitions for PNG_HAVE_IHDR, PNG_HAVE_PLTE, and PNG_AFTER_IDAT
+ from pngpriv.h to png.h because they must be visible to applications
+ that call png_set_unknown_chunks().
Check for up->location !PNG_AFTER_IDAT when writing unknown chunks
before IDAT.
- Ported bugfix in pngrtran.c from 1.5.3: when expanding a paletted image,
- always expand to RGBA if transparency is present.
-version 1.4.8beta02 [June 5, 2011]
- Ported bugfix in pngrtran.c from 1.5.3: Ensure coefficients are OK for
- png_rgb_to_gray_fixed().
+Version 1.5.3beta08 [May 16, 2011]
+ Improved "pngvalid --speed" to exclude more of pngvalid from the time.
+ Documented png_set_alpha_mode(), other changes in libpng.3/libpng-manual.txt
+ The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative
+ parameters are supplied by the caller), while in the absence of cHRM
+ sRGB/Rec 709 values are still used. This introduced a divide-by-zero
+ bug in png_handle_cHRM().
+ The bKGD chunk no longer overwrites the background value set by
+ png_set_background(), allowing the latter to be used before the file
+ header is read. It never performed any useful function to override
+ the default anyway.
+ Added memory overwrite and palette image checks to pngvalid.c
+ Previously palette image code was poorly checked. Since the transformation
+ code has a special palette path in most cases this was a severe weakness.
+ Minor cleanup and some extra checking in pngrutil.c and pngrtran.c. When
+ expanding an indexed image, always expand to RGBA if transparency is
+ present.
-version 1.4.8beta03 [June 6, 2011]
- Check for integer overflow in png_set_rgb_to_gray().
+Version 1.5.3beta09 [May 17, 2011]
+ Reversed earlier 1.5.3 change of transformation order; move png_expand_16
+ back where it was. The change doesn't work because it requires 16-bit
+ gamma tables when the code only generates 8-bit ones. This fails
+ silently; the libpng code just doesn't do any gamma correction. Moving
+ the tests back leaves the old, inaccurate, 8-bit gamma calculations, but
+ these are clearly better than none!
-version 1.4.8beta04 [June 7, 2011]
+Version 1.5.3beta10 [May 20, 2011]
+
+ png_set_background() and png_expand_16() did not work together correctly.
+ This problem is present in 1.5.2; if png_set_background is called with
+ need_expand false and the matching 16 bit color libpng erroneously just
+ treats it as an 8-bit color because of where png_do_expand_16 is in the
+ transform list. This simple fix reduces the supplied colour to 8-bits,
+ so it gets smashed, but this is better than the current behavior.
+ Added tests for expand16, more fixes for palette image tests to pngvalid.
+ Corrects the code for palette image tests and disables attempts to
+ validate palette colors.
+
+Version 1.5.3rc01 [June 3, 2011]
+ No changes.
+
+Version 1.5.3rc02 [June 8, 2011]
Fixed uninitialized memory read in png_format_buffer() (Bug report by
- Frank Busse, related to CVE-2004-0421).
+ Frank Busse, CVE-2011-2501, related to CVE-2004-0421).
-version 1.4.8beta05 [June 19, 2011]
- Fixed error in "ACCURATE" 16-to-8 scaling (John Bowler).
- Check for sCAL chunk too short.
+Version 1.5.3beta11 [June 11, 2011]
+ Fixed png_handle_sCAL which is broken in 1.5. This fixes CVE 2011-2692.
+ Added sCAL to pngtest.png
+ Revised documentation about png_set_user_limits() to say that it also affects
+ png writing.
+ Revised handling of png_set_user_limits() so that it can increase the
+ limit beyond the PNG_USER_WIDTH|HEIGHT_MAX; previously it could only
+ reduce it.
+ Make the 16-to-8 scaling accurate. Dividing by 256 with no rounding is
+ wrong (high by one) 25% of the time. Dividing by 257 with rounding is
+ wrong in 128 out of 65536 cases. Getting the right answer all the time
+ without division is easy.
+ Added "_SUPPORTED" to the PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION macro.
+ Added projects/owatcom, an IDE project for OpenWatcom to replace
+ scripts/makefile.watcom. This project works with OpenWatcom 1.9. The
+ IDE autogenerates appropriate makefiles (libpng.mk) for batch processing.
+ The project is configurable, unlike the Visual Studio project, so long
+ as the developer has an awk.
+ Changed png_set_gAMA to limit the gamma value range so that the inverse
+ of the stored value cannot overflow the fixed point representation,
+ and changed other things OpenWatcom warns about.
+ Revised pngvalid.c to test PNG_ALPHA_MODE_SUPPORTED correctly. This allows
+ pngvalid to build when ALPHA_MODE is not supported, which is required if
+ it is to build on libpng 1.4.
+ Removed string/memory macros that are no longer used and are not
+ necessarily fully supportable, particularly png_strncpy and png_snprintf.
+ Added log option to pngvalid.c and attempted to improve gamma messages.
-version 1.4.8rc01 [June 30, 2011]
+Version 1.5.3 [omitted]
+ People found the presence of a beta release following an rc release
+ to be confusing; therefore we bump the version to libpng-1.5.4beta01
+ and there will be no libpng-1.5.3 release.
+
+Version 1.5.4beta01 [June 14, 2011]
+ Made it possible to undefine PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+ to get the same (inaccurate) output as libpng-1.5.2 and earlier.
+ Moved definitions of PNG_HAVE_IHDR, PNG_AFTER_IDAT, and PNG_HAVE_PLTE
+ outside of an unknown-chunk block in png.h because they are also
+ needed for other uses.
+
+Version 1.5.4beta02 [June 14, 2011]
+ Fixed and clarified LEGACY 16-to-8 scaling code.
+ Added png_set_chop_16() API, to match inaccurate results from previous
+ libpng versions.
+ Removed the ACCURATE and LEGACY options (they are no longer useable)
+ Use the old scaling method for background if png_set_chop_16() was
+ called.
+ Made png_set_chop_16() API removeable by disabling PNG_CHOP_16_TO_8_SUPPORTED
+
+Version 1.5.4beta03 [June 15, 2011]
+ Fixed a problem in png_do_expand_palette() exposed by optimization in
+ 1.5.3beta06
+ Also removed a spurious and confusing "trans" member ("trans") from png_info.
+ The palette expand optimization prevented expansion to an intermediate RGBA
+ form if tRNS was present but alpha was marked to be stripped; this exposed
+ a check for tRNS in png_do_expand_palette() which is inconsistent with the
+ code elsewhere in libpng.
+ Correction to the expand_16 code; removed extra instance of
+ png_set_scale_16_to_8 from pngpriv.h
+
+Version 1.5.4beta04 [June 16, 2011]
+ Added a missing "#ifdef PNG_READ_BACKGROUND_SUPPORTED/#endif" in pngrtran.c
+ Added PNG_TRANSFORM_CHOP_16 to the high-level read transforms.
+ Made PNG_READ_16_TO_8_ACCURATE_SCALE configurable again. If this is
+ not enabled, png_set_strip_16() and png_do_scale_16_to_8() aren't built.
+ Revised contrib/visupng, gregbook, and pngminim to demonstrate chop_16_to_8
+
+Version 1.5.4beta05 [June 16, 2011]
+ Renamed png_set_strip_16() to png_set_scale_16() and renamed
+ png_set_chop_16() to png_set_strip(16) in an attempt to minimize the
+ behavior changes between libpng14 and libpng15.
+
+Version 1.5.4beta06 [June 18, 2011]
+ Fixed new bug that was causing both strip_16 and scale_16 to be applied.
+
+Version 1.5.4beta07 [June 19, 2011]
+ Fixed pngvalid, simplified macros, added checking for 0 in sCAL.
+ The ACCURATE scale macro is no longer defined in 1.5 - call the
+ png_scale_16_to_8 API. Made sure that PNG_READ_16_TO_8 is still defined
+ if the png_strip_16_to_8 API is present. png_check_fp_number now
+ maintains some state so that positive, negative and zero values are
+ identified. sCAL uses these to be strictly spec conformant.
+
+Version 1.5.4beta08 [June 23, 2011]
+ Fixed pngvalid if ACCURATE_SCALE is defined.
+ Updated scripts/pnglibconf.h.prebuilt.
+
+Version 1.5.4rc01 [June 30, 2011]
+ Define PNG_ALLOCATED to "restrict" only if MSC_VER >= 1400.
+
+Version 1.5.4 [July 7, 2011]
No changes.
-version 1.4.8 [July 7, 2011]
- No changes.
-
-version 1.4.9beta01 [September 2, 2011]
- Added vstudio/* and CMakeLists to EXTRA_DIST in Makefile.in and Makefile.am
+Version 1.5.5beta01 [July 13, 2011]
+ Fixed some typos and made other minor changes in the manual.
Updated contrib/pngminus/makefile.std (Samuli Souminen)
- Added SunOS support to configure.ac and Makefile.am (but configure and
- Makefile.in were not updated)
-Send comments/corrections/commendations to glennrp at users.sourceforge.net
-or to png-mng-implement at lists.sf.net (subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement).
+Version 1.5.5beta02 [July 14, 2011]
+ Revised Makefile.am and Makefile.in to look in the right directory for
+ pnglibconf.h.prebuilt
+
+Version 1.5.5beta03 [July 27, 2011]
+ Enabled compilation with g++ compiler. This compiler does not recognize
+ the file extension, so it always compiles with C++ rules. Made minor
+ changes to pngrutil.c to cast results where C++ expects it but C does not.
+ Minor editing of libpng.3 and libpng-manual.txt.
+
+Version 1.5.5beta04 [July 29, 2011]
+ Revised CMakeLists.txt (Clifford Yapp)
+ Updated commentary about the png_rgb_to_gray() default coefficients
+ in the manual and in pngrtran.c
+
+Version 1.5.5beta05 [August 17, 2011]
+ Prevent unexpected API exports from non-libpng DLLs on Windows. The "_DLL"
+ is removed from the test of whether a DLL is being built (this erroneously
+ caused the libpng APIs to be marked as DLL exports in static builds under
+ Microsoft Visual Studio). Almost all of the libpng building configuration
+ is moved from pngconf.h to pngpriv.h, but PNG_DLL_EXPORT remains in
+ pngconf.h, though, so that it is colocated with the import definition (it
+ is no longer used anywhere in the installed headers). The VStudio project
+ definitions have been cleaned up: "_USRDLL" has been removed from the
+ static library builds (this was incorrect), and PNG_USE_DLL has been added
+ to pngvalid to test the functionality (pngtest does not supply it,
+ deliberately). The spurious "_EXPORTS" has been removed from the
+ libpng build (all these errors were a result of copy/paste between project
+ configurations.)
+ Added new types and internal functions for CIE RGB end point handling to
+ pngpriv.h (functions yet to be implemented).
+
+Version 1.5.5beta06 [August 26, 2011]
+ Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set in CMakeLists.txt
+ (Clifford Yap)
+ Fixes to rgb_to_gray and cHRM XYZ APIs (John Bowler):
+ The rgb_to_gray code had errors when combined with gamma correction.
+ Some pixels were treated as true grey when they weren't and such pixels
+ and true grey ones were not gamma corrected (the original value of the
+ red component was used instead). APIs to get and set cHRM using color
+ space end points have been added and the rgb_to_gray code that defaults
+ based on cHRM, and the divide-by-zero bug in png_handle_cHRM (CERT
+ VU#477046, CVE-2011-3328, introduced in 1.5.4) have been corrected.
+ A considerable number of tests has been added to pngvalid for the
+ rgb_to_gray transform.
+ Arithmetic errors in rgb_to_gray whereby the calculated gray value was
+ truncated to the bit depth rather than rounded have been fixed except in
+ the 8-bit non-gamma-corrected case (where consistency seems more important
+ than correctness.) The code still has considerable inaccuracies in the
+ 8-bit case because 8-bit linear arithmetic is used.
+
+Version 1.5.5beta07 [September 7, 2011]
+ Added "$(ARCH)" option to makefile.darwin
+ Added SunOS support to configure.ac and Makefile.am
+ Changed png_chunk_benign_error() to png_warning() in png.c, in
+ png_XYZ_from_xy_checked().
+
+Version 1.5.5beta08 [September 10, 2011]
+ Fixed 64-bit compilation errors (gcc). The errors fixed relate
+ to conditions where types that are 32 bits in the GCC 32-bit
+ world (uLong and png_size_t) become 64 bits in the 64-bit
+ world. This produces potential truncation errors which the
+ compiler correctly flags.
+ Relocated new HAVE_SOLARIS_LD definition in configure.ac
+ Constant changes for 64-bit compatibility (removal of L suffixes). The
+ 16-bit cases still use "L" as we don't have a 16-bit test system.
+
+Version 1.5.5rc01 [September 15, 2011]
+ Removed "L" suffixes in pngpriv.h
+
+Version 1.5.5 [September 22, 2011]
+ No changes.
+
+Version 1.5.6beta01 [September 22, 2011]
+ Fixed some 64-bit type conversion warnings in pngrtran.c
+ Moved row_info from png_struct to a local variable.
+ The various interlace mask arrays have been made into arrays of
+ bytes and made PNG_CONST and static (previously some arrays were
+ marked PNG_CONST and some weren't).
+ Additional checks have been added to the transform code to validate the
+ pixel depths after the transforms on both read and write.
+ Removed some redundant code from pngwrite.c, in png_destroy_write_struct().
+ Changed chunk reading/writing code to use png_uint_32 instead of png_byte[4].
+ This removes the need to allocate temporary strings for chunk names on
+ the stack in the read/write code. Unknown chunk handling still uses the
+ string form because this is exposed in the API.
+
+Version 1.5.6beta02 [September 26, 2011]
+ Added a note in the manual the png_read_update_info() must be called only
+ once with a particular info_ptr.
+ Fixed a typo in the definition of the new PNG_STRING_FROM_CHUNK(s,c) macro.
+
+Version 1.5.6beta03 [September 28, 2011]
+ Revised test-pngtest.sh to report FAIL when pngtest fails.
+ Added "--strict" option to pngtest, to report FAIL when the failure is
+ only because the resulting valid files are different.
+ Revised CMakeLists.txt to work with mingw and removed some material from
+ CMakeLists.txt that is no longer useful in libpng-1.5.
+
+Version 1.5.6beta04 [October 5, 2011]
+ Fixed typo in Makefile.in and Makefile.am ("-M Wl" should be "-M -Wl")."
+
+Version 1.5.6beta05 [October 12, 2011]
+ Speed up png_combine_row() for interlaced images. This reduces the generality
+ of the code, allowing it to be optimized for Adam7 interlace. The masks
+ passed to png_combine_row() are now generated internally, avoiding
+ some code duplication and localizing the interlace handling somewhat.
+ Align png_struct::row_buf - previously it was always unaligned, caused by
+ a bug in the code that attempted to align it; the code needs to subtract
+ one from the pointer to take account of the filter byte prepended to
+ each row.
+ Optimized png_combine_row() when rows are aligned. This gains a small
+ percentage for 16-bit and 32-bit pixels in the typical case where the
+ output row buffers are appropriately aligned. The optimization was not
+ previously possible because the png_struct buffer was always misaligned.
+ Fixed bug in png_write_chunk_header() debug print, introduced in 1.5.6beta01.
+
+Version 1.5.6beta06 [October 17, 2011]
+ Removed two redundant tests for unitialized row.
+ Fixed a relatively harmless memory overwrite in compressed text writing
+ with a 1 byte zlib buffer.
+ Add ability to call png_read_update_info multiple times to pngvalid.c.
+ Fixes for multiple calls to png_read_update_info. These fixes attend to
+ most of the errors revealed in pngvalid, however doing the gamma work
+ twice results in inaccuracies that can't be easily fixed. There is now
+ a warning in the code if this is going to happen.
+ Turned on multiple png_read_update_info in pngvalid transform tests.
+ Prevent libpng from overwriting unused bits at the end of the image when
+ it is not byte aligned, while reading. Prior to libpng-1.5.6 libpng would
+ overwrite the partial byte at the end of each row if the row width was not
+ an exact multiple of 8 bits and the image is not interlaced.
+
+Version 1.5.6beta07 [October 21, 2011]
+ Made png_ptr->prev_row an aligned pointer into png_ptr->big_prev_row
+ (Mans Rullgard).
+
+Version 1.5.6rc01 [October 26, 2011]
+ Changed misleading "Missing PLTE before cHRM" warning to "Out of place cHRM"
+
+Version 1.5.6rc02 [October 27, 2011]
+ Added LSR() macro to defend against buggy compilers that evaluate non-taken
+ code branches and complain about out-of-range shifts.
+
+Version 1.5.6rc03 [October 28, 2011]
+ Renamed the LSR() macro to PNG_LSR() and added PNG_LSL() macro.
+ Fixed compiler warnings with Intel and MSYS compilers. The logical shift
+ fix for Microsoft Visual C is required by other compilers, so this
+ enables that fix for all compilers when using compile-time constants.
+ Under MSYS 'byte' is a name declared in a system header file, so we
+ changed the name of a local variable to avoid the warnings that result.
+ Added #define PNG_ALIGN_TYPE PNG_ALIGN_NONE to contrib/pngminim/*/pngusr.h
+
+Version 1.5.6 [November 3, 2011]
+ No changes.
+
+Version 1.5.7beta01 [November 4, 2011]
+ Added support for ARM processor (Mans Rullgard)
+ Fixed bug in pngvalid on early allocation failure; fixed type cast in
+ pngmem.c; pngvalid would attempt to call png_error() if the allocation
+ of a png_struct or png_info failed. This would probably have led to a
+ crash. The pngmem.c implementation of png_malloc() included a cast
+ to png_size_t which would fail on large allocations on 16-bit systems.
+ Fix for the preprocessor of the Intel C compiler. The preprocessor
+ splits adjacent @ signs with a space; this changes the concatentation
+ token from @-@-@ to PNG_JOIN; that should work with all compiler
+ preprocessors.
+ Paeth filter speed improvements from work by Siarhei Siamashka. This
+ changes the 'Paeth' reconstruction function to improve the GCC code
+ generation on x86. The changes are only part of the suggested ones;
+ just the changes that definitely improve speed and remain simple.
+ The changes also slightly increase the clarity of the code.
+
+Version 1.5.7beta02 [November 11, 2011]
+ Check compression_type parameter in png_get_iCCP and remove spurious
+ casts. The compression_type parameter is always assigned to, so must
+ be non-NULL. The cast of the profile length potentially truncated the
+ value unnecessarily on a 16-bit int system, so the cast of the (byte)
+ compression type to (int) is specified by ANSI-C anyway.
+ Fixed FP division by zero in pngvalid.c; the 'test_pixel' code left
+ the sBIT fields in the test pixel as 0, which resulted in a floating
+ point division by zero which was irrelevant but causes systems where
+ FP exceptions cause a crash. Added code to pngvalid to turn on FP
+ exceptions if the appropriate glibc support is there to ensure this is
+ tested in the future.
+ Updated scripts/pnglibconf.mak and scripts/makefile.std to handle the
+ new PNG_JOIN macro.
+ Added versioning to pnglibconf.h comments.
+ Simplified read/write API initial version; basic read/write tested on
+ a variety of images, limited documentation (in the header file.)
+ Installed more accurate linear to sRGB conversion tables. The slightly
+ modified tables reduce the number of 16-bit values that
+ convert to an off-by-one 8-bit value. The "makesRGB.c" code that was used
+ to generate the tables is now in a contrib/sRGBtables sub-directory.
+
+Version 1.5.7beta03 [November 17, 2011]
+ Removed PNG_CONST from the sRGB table declarations in pngpriv.h and png.c
+ Added run-time detection of NEON support.
+ Added contrib/libtests; includes simplified API test and timing test and
+ a color conversion utility for rapid checking of failed 'pngstest' results.
+ Multiple transform bug fixes plus a work-round for double gamma correction.
+ libpng does not support more than one transform that requires linear data
+ at once - if this is tried typically the results is double gamma
+ correction. Since the simplified APIs can need rgb to gray combined with
+ a compose operation it is necessary to do one of these outside the main
+ libpng transform code. This check-in also contains fixes to various bugs
+ in the simplified APIs themselves and to some bugs in compose and rgb to
+ gray (on palette) itself.
+ Fixes for C++ compilation using g++ When libpng source is compiled
+ using g++. The compiler imposes C++ rules on the C source; thus it
+ is desireable to make the source work with either C or C++ rules
+ without throwing away useful error information. This change adds
+ png_voidcast to allow C semantic (void*) cases or the corresponding
+ C++ static_cast operation, as appropriate.
+ Added --noexecstack to assembler file compilation. GCC does not set
+ this on assembler compilation, even though it does on C compilation.
+ This creates security issues if assembler code is enabled; the
+ work-around is to set it by default in the flags for $(CCAS)
+ Work around compilers that don't support declaration of const data. Some
+ compilers fault 'extern const' data declarations (because the data is
+ not initialized); this turns on const-ness only for compilers where
+ this is known to work.
+
+Version 1.5.7beta04 [November 17, 2011]
+ Since the gcc driver does not recognize the --noexecstack flag, we must
+ use the -Wa prefix to have it passed through to the assembler.
+ Also removed a duplicate setting of this flag.
+ Added files that were omitted from the libpng-1.5.7beta03 zip distribution.
+
+Version 1.5.7beta05 [November 25, 2011]
+ Removed "zTXt" from warning in generic chunk decompression function.
+ Validate time settings passed to pngset() and png_convert_to_rfc1123()
+ (Frank Busse).
+ Added MINGW support to CMakeLists.txt
+ Reject invalid compression flag or method when reading the iTXt chunk.
+ Backed out 'simplified' API changes. The API seems too complex and there
+ is a lack of consensus or enthusiasm for the proposals. The API also
+ reveals significant bugs inside libpng (double gamma correction and the
+ known bug of being unable to retrieve a corrected palette). It seems
+ better to wait until the bugs, at least, are corrected.
+ Moved pngvalid.c into contrib/libtests
+ Rebuilt Makefile.in, configure, etc., with autoconf-2.68
+
+Version 1.5.7rc01 [December 1, 2011]
+ Replaced an "#if" with "#ifdef" in pngrtran.c
+ Revised #if PNG_DO_BC block in png.c (use #ifdef and add #else)
+
+Version 1.5.7rc02 [December 5, 2011]
+ Revised project files and contrib/pngvalid/pngvalid.c to account for
+ the relocation of pngvalid into contrib/libtests.
+ Revised pngconf.h to use " __declspec(restrict)" only when MSC_VER >= 1400,
+ as in libpng-1.5.4.
+ Put CRLF line endings in the owatcom project files.
+
+Version 1.5.7rc03 [December 7, 2011]
+ Updated CMakeLists.txt to account for the relocation of pngvalid.c
+
+Version 1.5.7 [December 15, 2011]
+ Minor fixes to pngvalid.c for gcc 4.6.2 compatibility to remove warnings
+ reported by earlier versions.
+
+Version 1.5.8beta01 [January 15, 2011]
+ Removed '#include config.h"' from contrib/libtests/pngvalid.c. It's not
+ needed and causes trouble for VPATH building.
+ Moved AC_MSG_CHECKING([if libraries can be versioned]) later to the proper
+ location in configure.ac (Gilles Espinasse).
+ Fix bug in pngerror.c: some long warnings were being improperly truncated
+ (CVE-2011-3464, bug introduced in libpng-1.5.3beta05).
+
+Version 1.5.8rc01 [January 21, 2012]
+ No changes.
+
+Version 1.5.8rc02 [January 25, 2012]
+ Fixed Min/GW uninstall to remove libpng.dll.a
+ Conditionalize the install rules for MINGW and CYGWIN in CMakeLists.txt
+
+Version 1.5.8 [February 1, 2012]
+ No changes.
+
+Version 1.5.9beta01 [February 3, 2012]
+ Rebuilt configure scripts in the tar distributions.
+
+Version 1.5.9beta02 [February 16, 2012]
+ Removed two unused definitions from scripts/pnglibconf.h.prebuilt
+ Removed some unused arrays (with #ifdef) from png_read_push_finish_row().
+ Removed tests for no-longer-used *_EMPTY_PLTE_SUPPORTED from pngstruct.h
+
+Version 1.5.9rc01 [February 17, 2012]
+ Fixed CVE-2011-3026 buffer overrun bug. Deal more correctly with the test
+ on iCCP chunk length. Also removed spurious casts that may hide problems
+ on 16-bit systems.
+
+Version 1.5.9 [February 18, 2012]
+ No changes.
+
+Version 1.5.10beta01 [February 21, 2012]
+ Removed two useless #ifdef directives from pngread.c and one from pngrutil.c
+ Always put the CMAKE_LIBRARY in "lib" (removed special WIN32 case).
+ Removed empty vstudio/pngstest directory (Clifford Yapp).
+ Eliminated redundant png_push_read_tEXt|zTXt|iTXt|unknown code from
+ pngpread.c and use the sequential png_handle_tEXt, etc., in pngrutil.c;
+ now that png_ptr->buffer is inaccessible to applications, the special
+ handling is no longer useful.
+ Fixed bug with png_handle_hIST with odd chunk length (Frank Busse).
+
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net
+(subscription required; visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe)
+or to glennrp at users.sourceforge.net
Glenn R-P
#endif
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7494b90..c1b1d98 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,11 @@
+# CMakeLists.txt
+
+# Copyright (C) 2007-2011 Glenn Randers-Pehrson
+
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
cmake_minimum_required(VERSION 2.4.4)
set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
@@ -25,15 +33,9 @@
project(libpng C)
enable_testing()
-# Copyright (C) 2007-2010 Glenn Randers-Pehrson
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
set(PNGLIB_MAJOR 1)
-set(PNGLIB_MINOR 4)
-set(PNGLIB_RELEASE 9)
+set(PNGLIB_MINOR 5)
+set(PNGLIB_RELEASE 10)
set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
@@ -67,39 +69,11 @@
option(PNG_STATIC "Build static lib" ON)
endif()
-if(MINGW)
- option(PNG_TESTS "Build pngtest" NO)
-else()
- option(PNG_TESTS "Build pngtest" YES)
-endif()
+option(PNG_TESTS "Build libpng tests" YES)
-option(PNG_NO_CONSOLE_IO "FIXME" YES)
-option(PNG_NO_STDIO "FIXME" YES)
+# Many more configuration options could be added here
option(PNG_DEBUG "Build with debug output" NO)
-option(PNGARG "FIXME" YES)
-#TODO:
-# PNG_CONSOLE_IO_SUPPORTED
-
-# maybe needs improving, but currently I don't know when we can enable what :)
-set(png_asm_tmp "OFF")
-if(NOT WIN32)
- find_program(uname_executable NAMES uname PATHS /bin /usr/bin /usr/local/bin)
- if(uname_executable)
- exec_program(${uname_executable}
- ARGS --machine OUTPUT_VARIABLE uname_output)
- if("uname_output" MATCHES "^.*i[1-9]86.*$")
- set(png_asm_tmp "ON")
- else("uname_output" MATCHES "^.*i[1-9]86.*$")
- set(png_asm_tmp "OFF")
- endif("uname_output" MATCHES "^.*i[1-9]86.*$")
- endif(uname_executable)
-else()
- # this env var is normally only set on win64
- set(TEXT "ProgramFiles(x86)")
- if("$ENV{${TEXT}}" STREQUAL "")
- set(png_asm_tmp "ON")
- endif("$ENV{${TEXT}}" STREQUAL "")
-endif()
+option(PNGARG "Disable ANSI-C prototypes" NO)
# SET LIBNAME
set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
@@ -107,14 +81,26 @@
# to distinguish between debug and release lib
set(CMAKE_DEBUG_POSTFIX "d")
+# Use the prebuilt pnglibconf.h file from the scripts folder
+# TODO: fix this by building with awk; without this no cmake build can be
+# configured directly (to do so indirectly use your local awk to build a
+# pnglibconf.h in the build directory.)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt
+ ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h)
+include_directories(${CMAKE_CURRENT_BINARY_DIR})
+
# OUR SOURCES
set(libpng_public_hdrs
png.h
pngconf.h
+ ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h
)
set(libpng_sources
${libpng_public_hdrs}
+ pngdebug.h
+ pnginfo.h
pngpriv.h
+ pngstruct.h
png.c
pngerror.c
pngget.c
@@ -134,44 +120,21 @@
set(pngtest_sources
pngtest.c
)
+set(pngvalid_sources
+ contrib/libtests/pngvalid.c
+)
# SOME NEEDED DEFINITIONS
add_definitions(-DPNG_CONFIGURE_LIBPNG)
-if(_AIX)
- add_definitions(-D_ALL_SOURCE)
-endif(_AIX)
-
if(MSVC)
- add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
+ add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
endif(MSVC)
-if(PNG_SHARED OR NOT MSVC)
- #if building msvc static this has NOT to be defined
- add_definitions(-DZLIB_DLL)
-endif()
-
-
-if(PNG_CONSOLE_IO_SUPPORTED)
- add_definitions(-DPNG_CONSOLE_IO_SUPPORTED)
-endif()
-
-if(PNG_NO_CONSOLE_IO)
- add_definitions(-DPNG_NO_CONSOLE_IO)
-endif()
-
-if(PNG_NO_STDIO)
- add_definitions(-DPNG_NO_STDIO)
-endif()
-
if(PNG_DEBUG)
add_definitions(-DPNG_DEBUG)
endif()
-if(NOT M_LIBRARY AND NOT WIN32)
- add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED)
-endif()
-
# NOW BUILD OUR TARGET
include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${ZLIB_INCLUDE_DIR})
@@ -196,7 +159,6 @@
target_link_libraries(${PNG_LIB_NAME_STATIC} ${ZLIB_LIBRARY} ${M_LIBRARY})
endif()
-
if(PNG_SHARED AND WIN32)
set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
endif()
@@ -206,58 +168,66 @@
add_executable(pngtest ${pngtest_sources})
target_link_libraries(pngtest ${PNG_LIB_NAME})
add_test(pngtest ./pngtest ${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png)
+ #
+ add_executable(pngvalid ${pngvalid_sources})
+ target_link_libraries(pngvalid ${PNG_LIB_NAME})
+ add_test(pngvalid ./pngvalid)
endif()
-#
+# Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set
+IF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
+ SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "lib")
+ENDIF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
+
# Set a variable with CMake code which:
# Creates a symlink from src to dest (if possible) or alternatively
# copies if different.
-macro(_png_generate_symlink_code CODE SRC DEST)
- if(WIN32 AND NOT CYGWIN)
- set(_png_gsc_message "Copying ${SRC} to ${DEST} if needed")
- set(_png_gsc_operation "copy_if_different")
- else()
- set(_png_gsc_message "Symlinking ${SRC} to ${DEST}")
- set(_png_gsc_operation "create_symlink")
- endif()
-
- set(${CODE} "
- message(STATUS \"${_png_gsc_message}\")
- execute_process(COMMAND \${CMAKE_COMMAND} -E ${_png_gsc_operation}
- \"${SRC}\" \"${DEST}\")
- ")
+macro(CREATE_SYMLINK SRC_FILE DEST_FILE)
+ FILE(REMOVE ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE})
+ if(WIN32 AND NOT CYGWIN AND NOT MINGW)
+ ADD_CUSTOM_COMMAND(
+ OUTPUT ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE}
+ COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_BINARY_DIR}/${SRC_FILE} ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE}
+ COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_BINARY_DIR}/${SRC_FILE} ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE}
+ DEPENDS ${PNG_LIB_NAME} ${PNG_LIB_NAME_STATIC}
+ )
+ ADD_CUSTOM_TARGET(${DEST_FILE}_COPY ALL DEPENDS ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE})
+ else(WIN32 AND NOT CYGWIN AND NOT MINGW)
+ execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink ${SRC_FILE} ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+ execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink ${SRC_FILE} ${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+ endif(WIN32 AND NOT CYGWIN AND NOT MINGW)
endmacro()
-# CREATE PKGCONFIG FILES
-# we use the same files like ./configure, so we have to set its vars
+# libpng is a library so default to 'lib'
if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
set(CMAKE_INSTALL_LIBDIR lib)
endif(NOT DEFINED CMAKE_INSTALL_LIBDIR)
-set(prefix ${CMAKE_INSTALL_PREFIX})
-set(exec_prefix ${CMAKE_INSTALL_PREFIX})
-set(libdir ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})
-set(includedir ${CMAKE_INSTALL_PREFIX}/include)
-set(LIBS "-lz -lm")
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
- ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY)
-_png_generate_symlink_code(PNG_PC_INSTALL_CODE
- ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
- ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc)
-install(CODE ${PNG_PC_INSTALL_CODE})
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
- ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY)
-_png_generate_symlink_code(PNG_CONFIG_INSTALL_CODE
- ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
- ${CMAKE_CURRENT_BINARY_DIR}/libpng-config)
-install(CODE ${PNG_CONFIG_INSTALL_CODE})
+# CREATE PKGCONFIG FILES
+# we use the same files like ./configure, so we have to set its vars
+# Only do this on Windows for Cygwin - the files don't make much sense outside
+# a UNIX look alike
+if(NOT WIN32 OR CYGWIN OR MINGW)
+ set(prefix ${CMAKE_INSTALL_PREFIX})
+ set(exec_prefix ${CMAKE_INSTALL_PREFIX})
+ set(libdir ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})
+ set(includedir ${CMAKE_INSTALL_PREFIX}/include)
+ set(LIBS "-lz -lm")
+ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
+ ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY)
+ CREATE_SYMLINK(${PNGLIB_NAME}.pc libpng.pc)
+
+ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
+ ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY)
+ CREATE_SYMLINK(${PNGLIB_NAME}-config libpng-config)
+endif(NOT WIN32 OR CYGWIN OR MINGW)
# SET UP LINKS
if(PNG_SHARED)
set_target_properties(${PNG_LIB_NAME} PROPERTIES
-# VERSION 14.${PNGLIB_RELEASE}.1.4.9beta01
- VERSION 14.${PNGLIB_RELEASE}.0
- SOVERSION 14
+# VERSION 15.${PNGLIB_RELEASE}.1.5.10beta01
+ VERSION 15.${PNGLIB_RELEASE}.0
+ SOVERSION 15
CLEAN_DIRECT_OUTPUT 1)
endif()
if(PNG_STATIC)
@@ -289,63 +259,37 @@
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
- # Create a symlink for libpng.dll.a => libpng14.dll.a on Cygwin
- if(CYGWIN)
- _png_generate_symlink_code(PNG_SHARED_IMPLIB_INSTALL_CODE
- ${PNGLIB_NAME}${CMAKE_IMPORT_LIBRARY_SUFFIX}
- libpng${CMAKE_IMPORT_LIBRARY_SUFFIX})
- install(CODE ${PNG_SHARED_IMPLIB_INSTALL_CODE})
- install(FILES
- ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX}
- DESTINATION ${CMAKE_INSTALL_LIBDIR})
- endif()
+ # Create a symlink for libpng.dll.a => libpng15.dll.a on Cygwin
+ if(CYGWIN OR MINGW)
+ get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME} LOCATION_${CMAKE_BUILD_TYPE})
+ get_filename_component(BUILD_TARGET_FILE ${BUILD_TARGET_LOCATION} NAME)
+ CREATE_SYMLINK(${BUILD_TARGET_FILE} libpng${CMAKE_IMPORT_LIBRARY_SUFFIX})
+ install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX}
+ DESTINATION ${CMAKE_INSTALL_LIBDIR})
+ endif(CYGWIN OR MINGW)
if(NOT WIN32)
- IF(CMAKE_LIBRARY_OUTPUT_DIRECTORY)
- _png_generate_symlink_code(PNG_SHARED_INSTALL_CODE
- ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${PNGLIB_NAME}${CMAKE_SHARED_LIBRARY_SUFFIX}
- ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX})
- install(CODE ${PNG_SHARED_INSTALL_CODE})
- install(FILES
- ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}
- DESTINATION ${CMAKE_INSTALL_LIBDIR})
- ELSE(CMAKE_LIBRARY_OUTPUT_DIRECTORY)
- _png_generate_symlink_code(PNG_SHARED_INSTALL_CODE
- ${PNGLIB_NAME}${CMAKE_SHARED_LIBRARY_SUFFIX}
- libpng${CMAKE_SHARED_LIBRARY_SUFFIX})
- install(CODE ${PNG_SHARED_INSTALL_CODE})
- install(FILES
- ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}
- DESTINATION ${CMAKE_INSTALL_LIBDIR})
- ENDIF(CMAKE_LIBRARY_OUTPUT_DIRECTORY)
- endif()
- endif()
+ get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME} LOCATION_${CMAKE_BUILD_TYPE})
+ get_filename_component(BUILD_TARGET_FILE ${BUILD_TARGET_LOCATION} NAME)
+ CREATE_SYMLINK(${BUILD_TARGET_FILE} libpng${CMAKE_SHARED_LIBRARY_SUFFIX})
+ install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}
+ DESTINATION ${CMAKE_INSTALL_LIBDIR})
+ endif(NOT WIN32)
+ endif(PNG_SHARED)
if(PNG_STATIC)
install(TARGETS ${PNG_LIB_NAME_STATIC}
${PNG_EXPORT_RULE}
- LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
- ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
- if(NOT WIN32 OR CYGWIN)
- IF(CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
- _png_generate_symlink_code(PNG_STATIC_INSTALL_CODE
-${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/${PNGLIB_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}
- ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX})
- install(CODE ${PNG_STATIC_INSTALL_CODE})
- install(FILES
- ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}
- DESTINATION ${CMAKE_INSTALL_LIBDIR})
- ELSE(CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
- _png_generate_symlink_code(PNG_STATIC_INSTALL_CODE
- ${PNGLIB_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}
- libpng${CMAKE_STATIC_LIBRARY_SUFFIX})
- install(CODE ${PNG_STATIC_INSTALL_CODE})
- install(FILES
- ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}
- DESTINATION ${CMAKE_INSTALL_LIBDIR})
- ENDIF(CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
- endif()
- endif()
+ LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+ ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+ if(NOT WIN32 OR CYGWIN OR MINGW)
+ get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME_STATIC} LOCATION_${CMAKE_BUILD_TYPE})
+ get_filename_component(BUILD_TARGET_FILE ${BUILD_TARGET_LOCATION} NAME)
+ CREATE_SYMLINK(${BUILD_TARGET_FILE} libpng${CMAKE_STATIC_LIBRARY_SUFFIX})
+ install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}
+ DESTINATION ${CMAKE_INSTALL_LIBDIR})
+ endif(NOT WIN32 OR CYGWIN OR MINGW)
+ endif()
endif()
if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
@@ -353,10 +297,13 @@
install(FILES ${libpng_public_hdrs} DESTINATION include/${PNGLIB_NAME})
endif()
if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL )
- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin)
- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
- DESTINATION bin)
+ if(NOT WIN32 OR CYGWIN OR MINGW)
+ install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin)
+ install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
+ DESTINATION bin)
+ endif(NOT WIN32 OR CYGWIN OR MINGW)
endif()
+
if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
# Install man pages
if(NOT PNG_MAN_DIR)
@@ -365,14 +312,16 @@
install(FILES libpng.3 libpngpf.3 DESTINATION ${PNG_MAN_DIR}/man3)
install(FILES png.5 DESTINATION ${PNG_MAN_DIR}/man5)
# Install pkg-config files
- install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc
- DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config
- DESTINATION bin)
- install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
- DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
- DESTINATION bin)
+ if(NOT WIN32 OR CYGWIN OR MINGW)
+ install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc
+ DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+ install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config
+ DESTINATION bin)
+ install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
+ DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+ install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
+ DESTINATION bin)
+ endif(NOT WIN32 OR CYGWIN OR MINGW)
endif()
# On versions of CMake that support it, create an export file CMake
@@ -381,13 +330,11 @@
install(EXPORT libpng DESTINATION lib/libpng FILE lib${PNG_LIB_NAME}.cmake)
endif()
-# what's with libpng-manual.txt and all the extra files?
-
+# what's with libpng-$VER%.txt and all the extra files?
# UNINSTALL
# do we need this?
-
# DIST
# do we need this?
diff --git a/INSTALL b/INSTALL
index 7144f73..e6979c6 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
-Installing libpng version 1.4.9beta01 - July 8, 2011
+Installing libpng
On Unix/Linux and similar systems, you can simply type
@@ -13,10 +13,16 @@
up-to-date set of tools, running ./autogen.sh before running ./configure
may fix the problem. You can also run the individual commands in
autogen.sh with the --force option, if supported by your version of
-the tools. If you run 'libtoolize --force', though, this will replace
-the distributed, patched, version of ltmain.sh with an unpatched version
-and your shared library builds may fail to produce libraries with the
-correct version numbers.
+the tools. To be really sure that you aren't using any of the included
+pre-built scripts, you can do this:
+
+ ./configure --enable-maintainer-mode
+ make maintainer-clean
+ ./autogen.sh
+ ./configure [--prefix=/path] [other options]
+ make
+ make install
+ make check
Instead, you can use one of the custom-built makefiles in the
"scripts" directory
@@ -46,8 +52,8 @@
correspond to the version of zlib that's installed.
You can rename the directories that you downloaded (they
-might be called "libpng-1.4.9beta01" or "libpng14" and "zlib-1.2.3"
-or "zlib123") so that you have directories called "zlib" and "libpng".
+might be called "libpng-x.y.z" or "libpngNN" and "zlib-1.2.5"
+or "zlib125") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this:
@@ -60,9 +66,9 @@
CMakeLists.txt => "cmake" script
configuration files:
configure.ac, configure, Makefile.am, Makefile.in,
- autogen.sh, config.guess, ltmain.sh, missing,
- aclocal.m4, config.h.in, config.sub,
- depcomp, install-sh, test-pngtest.sh
+ autogen.sh, config.guess, ltmain.sh, missing, libpng.pc.in,
+ libpng-config.in, aclocal.m4, config.h.in, config.sub,
+ depcomp, install-sh, mkinstalldirs, test-pngtest.sh
contrib
gregbook
pngminim
@@ -70,14 +76,12 @@
pngsuite
visupng
projects
- cbuilder5 (Borland)
- visualc6 (msvc)
visualc71
vstudio
- xcode
scripts
makefile.*
*.def (module definition files)
+ etc.
pngtest.png
etc.
zlib
@@ -108,7 +112,7 @@
Read the makefile to see if you need to change any source or
target directories to match your preferences.
-Then read pngconf.h to see if you want to make any configuration
+Then read pnglibconf.dfa to see if you want to make any configuration
changes.
Then just run "make" which will create the libpng library in
@@ -126,19 +130,26 @@
Some also allow you to run "make test-installed" after you have
run "make install".
-If you encounter a compiler error message complaining about the
-lines
-
- __png.h__ already includes setjmp.h;
- __dont__ include it again.;
-
-this means you have compiled another module that includes setjmp.h,
-which is hazardous because the two modules might not include exactly
-the same setjmp.h. If you are sure that you know what you are doing
-and that they are exactly the same, then you can comment out or
-delete the two lines. Better yet, use the cexcept interface
-instead, as demonstrated in contrib/visupng of the libpng distribution.
-
-Further information can be found in the README and libpng.txt
+Further information can be found in the README and libpng-manual.txt
files, in the individual makefiles, in png.h, and the manual pages
libpng.3 and png.5.
+
+Using the ./configure script -- 16 December 2002.
+=================================================
+
+The ./configure script should work compatibly with what scripts/makefile.*
+did, however there are some options you might need to add to configure
+explicitly, which previously was done semi-automatically (if you didn't edit
+scripts/makefile.* yourself, that is)
+
+CFLAGS="-Wall -O -funroll-loops \
+-malign-loops=2 -malign-functions=2" ./configure --prefix=/usr/include \
+--with-pkgconfigdir=/usr/lib/pkgconfig --includedir=/usr/include
+
+You can alternatively specify --includedir=/usr/include, /usr/local/include,
+/usr/include/libpng%NN%, or whatever.
+
+If you find that the configure script is out-of-date or is not supporting
+your platform properly, try running autogen.sh to regenerate "configure",
+"Makefile.in", and the other configuration files. Then try configure again.
+
diff --git a/LICENSE b/LICENSE
index fdc1aa2..78d836c 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,8 +10,8 @@
This code is released under the libpng license.
-libpng versions 1.2.6, August 15, 2004, through 1.4.9beta01, July 8, 2011, are
-Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.5.10beta01, February 19, 2012, are
+Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@@ -108,4 +108,4 @@
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
-July 8, 2011
+February 19, 2012
diff --git a/Makefile.am b/Makefile.am
index a42167b..8228115 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,14 +5,24 @@
PNGLIB_BASENAME= libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
# libpng does not follow GNU file name conventions
+
+# "color-tests" requires automake 1.11.1 or later. Enable it if you like,
+# to get red "FAIL" and green "PASS" notations during tests.
+# AUTOMAKE_OPTIONS = foreign color-tests
AUTOMAKE_OPTIONS = foreign
# test programs - run on make check, make distcheck
+TESTS_ENVIRONMENT= srcdir=$(srcdir)
check_PROGRAMS= pngtest
pngtest_SOURCES = pngtest.c
pngtest_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
TESTS = test-pngtest.sh
-TESTS_ENVIRONMENT= srcdir=$(srcdir)
+
+# Only do the following if the contrib directory is present.
+check_PROGRAMS+= pngvalid
+pngvalid_SOURCES = contrib/libtests/pngvalid.c
+pngvalid_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
+TESTS += test-pngvalid-simple.sh test-pngvalid-full.sh
# man pages
dist_man_MANS= libpng.3 libpngpf.3 png.5
@@ -25,11 +35,16 @@
# rules to build libpng, only build the old library on request
lib_LTLIBRARIES=libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
# EXTRA_LTLIBRARIES= libpng.la
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngset.c pngget.c pngrutil.c \
- pngtrans.c pngwutil.c \
- pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
- pngwtran.c pngmem.c pngerror.c pngpread.c \
- png.h pngconf.h pngpriv.h
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c\
+ pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c pngrutil.c\
+ pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c\
+ png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
+
+if PNG_ARM_NEON
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/filter_neon.S
+endif
+
+nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@
@@ -37,8 +52,7 @@
-version-number @PNGLIB_MAJOR@@PNGLIB_MINOR@:@PNGLIB_RELEASE@:0
if HAVE_LD_VERSION_SCRIPT
- # Versioned symbols and restricted exports
-
+# Versioned symbols and restricted exports
if HAVE_SOLARIS_LD
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -Wl,-M -Wl,libpng.vers
else
@@ -47,17 +61,15 @@
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.vers
else
- # Only restricted exports when possible
+# Only restricted exports when possible
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -export-symbols libpng.sym
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.sym
endif
-# Avoid depending upon Character Ranges.
-AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
-
#distribute headers in /usr/include/libpng/*
pkgincludedir= $(includedir)/$(PNGLIB_BASENAME)
pkginclude_HEADERS= png.h pngconf.h
+nodist_pkginclude_HEADERS= pnglibconf.h
# pkg-config stuff, note that libpng.pc is always required in order
# to get the correct library
@@ -68,55 +80,129 @@
EXTRA_DIST= \
ANNOUNCE CHANGES INSTALL LICENSE README TODO \
pngtest.png pngbar.png pngnow.png pngbar.jpg autogen.sh \
- ${srcdir}/projects/visualc6/* \
- ${srcdir}/projects/visualc71/* \
- ${srcdir}/projects/vstudio/* \
- ${srcdir}/projects/xcode/* \
- ${srcdir}/scripts/* \
- ${srcdir}/contrib/gregbook/* \
- ${srcdir}/contrib/pngminim/* \
- ${srcdir}/contrib/pngminus/* \
- ${srcdir}/contrib/pngsuite/* \
- ${srcdir}/contrib/visupng/* \
+ ${srcdir}/contrib ${srcdir}/projects ${srcdir}/scripts \
$(TESTS) \
- example.c libpng-1.4.9beta01.txt
+ CMakeLists.txt example.c libpng-manual.txt
-CLEANFILES= pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers \
-libpng.sym
+SCRIPT_CLEANFILES=scripts/*.out scripts/*.chk scripts/pnglibconf.dfn
+
+CLEANFILES= dfn.c dfn?.out pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc \
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers libpng.sym \
+ check.new pnglibconf.* symbols.new pngtest-log.txt \
+ $(SCRIPT_CLEANFILES)
MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
config.sub configure depcomp install-sh ltmain.sh missing
+# DFNCPP is normally just CPP - the C preprocessor - but on Solaris and maybe
+# other operating systems (NeXT?) the C preprocessor selected by configure
+# checks input tokens for validity - effectively it performs part of the ANSI-C
+# parsing - and therefore fails with the .df files. configure.ac has special
+# checks for this and sets DFNCPP appropriately.
+DFNCPP = @DFNCPP@
+
+SUFFIXES = .chk .dfn .out
+
$(PNGLIB_BASENAME).pc: libpng.pc
cp libpng.pc $@
$(PNGLIB_BASENAME)-config: libpng-config
cp libpng-config $@
-libpng.sym: png.h pngconf.h
- rm -f $@ $@.new
- $(CPP) @LIBPNG_DEFINES@ $(CPPFLAGS) -DPNG_BUILDSYMS $(srcdir)/png.h | \
- $(SED) -n -e \
- 's|^.*PNG_FUNCTION_EXPORT[ ]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
- -e 's|^.*PNG_DATA_EXPORT[ ]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
- >$@.new
- mv $@.new $@
+scripts/sym.out scripts/vers.out: png.h pngconf.h pnglibconf.h
+scripts/symbols.out: png.h pngconf.h $(srcdir)/scripts/pnglibconf.h.prebuilt
-libpng.vers: libpng.sym
- rm -f $@ $@.new
- echo PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0 '{global:' > $@.new
- $(SED) s/$$/\;/ libpng.sym >> $@.new
- echo 'local: *; };' >> $@.new
- mv $@.new $@
+libpng.sym: scripts/sym.out
+ rm -f $@
+ cp $? $@
+libpng.vers: scripts/vers.out
+ rm -f $@
+ cp $? $@
+pnglibconf.h: pnglibconf.out
+ rm -f $@
+ cp $? $@
+$(srcdir)/scripts/pnglibconf.h.prebuilt:
+ @echo "Attempting to build $@" >&2
+ @echo "This is a machine generated file, but if you want to make" >&2
+ @echo "a new one simply make 'scripts/pnglibconf.out' and copy that" >&2
+ @exit 1
-test: check
+# The following is necessary to ensure that the local pnglibconf.h is used, not
+# an installed one (this can happen immediately after on a clean system if
+# 'make test' is the first thing the user does.)
+contrib/libtests/pngvalid.o pngtest.o: pnglibconf.h
+
+# We must use -DPNG_NO_USE_READ_MACROS here even when the library may actually
+# be built with PNG_USE_READ_MACROS; this prevents the read macros from
+# interfering with the symbol file format.
+SYMBOL_CFLAGS = -DPNGLIB_LIBNAME='PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0'\
+ -DPNGLIB_VERSION='@PNGLIB_VERSION@'\
+ -DSYMBOL_PREFIX='$(SYMBOL_PREFIX)'\
+ -DPNG_NO_USE_READ_MACROS -DPNG_BUILDING_SYMBOL_TABLE
+
+.dfn.out:
+ rm -f $@ dfn.c dfn?.out
+ test -d scripts || mkdir scripts
+ echo '#include "$<"' >dfn.c
+ $(DFNCPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) @LIBPNG_DEFINES@\
+ $(CPPFLAGS) $(SYMBOL_CFLAGS) dfn.c > dfn1.out
+ $(SED) -n -e 's|^.*PNG_DEFN_MAGIC *-\(.*\)- *PNG_DEFN_END.*$$|\1|p'\
+ dfn1.out >dfn2.out
+ $(SED) -e 's| *PNG_JOIN *||g' -e 's| *$$||' dfn2.out >dfn3.out
+ rm -f dfn.c dfn[12].out
+ mv dfn3.out $@
+
+# The .dfn file for pnglibconf.h is machine generated
+pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
+ rm -f $@ dfn?.out
+ $(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out version=search\
+ ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
+ $(DFA_XTRA) 1>&2
+ $(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
+ rm dfn1.out
+ mv dfn2.out $@
+
+# Symbol checks (.def and .out files should match)
+scripts/symbols.chk: scripts/checksym.awk scripts/symbols.def scripts/symbols.out
+.out.chk:
+ rm -f $@ symbols.new
+ $(AWK) -f ${srcdir}/scripts/checksym.awk ${srcdir}/scripts/${*F}.def\
+ $< >&2
+ mv symbols.new $@
+
+# used on demand to regenerate the standard header, CPPFLAGS should
+# be empty - no non-standard defines
+scripts/pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
+ rm -f $@ dfn?.out
+ test -z "$(CPPFLAGS)"
+ echo "com @PNGLIB_VERSION@ STANDARD API DEFINITION" |\
+ $(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out logunsupported=1
+ version=search ${srcdir}/pngconf.h -\
+ ${srcdir}/scripts/pnglibconf.dfa 1>&2
+ $(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
+ rm dfn1.out
+ mv dfn2.out $@
+
+$(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS): png.h pngconf.h \
+ pnglibconf.h pngpriv.h pngdebug.h pnginfo.h pngstruct.h
+
+test: check-am
+
+# Extra checks
+check: scripts/symbols.chk
+
+# Don't distribute the generated script files
+dist-hook:
+ cd '$(top_distdir)'; rm -f $(SCRIPT_CLEANFILES)
# install the .../include headers as links to the new ones
install-data-hook:
- cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h
+ cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
pngconf.h
+ cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
+ pnglibconf.h
cd $(DESTDIR)$(pkgconfigdir); rm -f libpng.pc
cd $(DESTDIR)$(pkgconfigdir); $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
@@ -134,6 +220,9 @@
done
uninstall-hook:
- cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h
+ cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
rm -f $(DESTDIR)$(pkgconfigdir)/libpng.pc
rm -f $(DESTDIR)$(bindir)/libpng-config
+ rm -f $(DESTDIR)$(libdir)/libpng.a
+ rm -f $(DESTDIR)$(libdir)/libpng.la
+ rm -f $(DESTDIR)$(libdir)/libpng.dll.a
diff --git a/Makefile.in b/Makefile.in
index cf5a9d5..ebc8bc6 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,9 +1,9 @@
-# Makefile.in generated by automake 1.11.1 from Makefile.am.
+# Makefile.in generated by automake 1.11.2 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
-# Inc.
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+# Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
@@ -40,9 +40,14 @@
POST_UNINSTALL = :
build_triplet = @build@
host_triplet = @host@
-check_PROGRAMS = pngtest$(EXEEXT)
-@HAVE_LD_VERSION_SCRIPT_TRUE@am__append_1 = -Wl,--version-script=libpng.vers
-@HAVE_LD_VERSION_SCRIPT_FALSE@am__append_2 = -export-symbols libpng.sym
+check_PROGRAMS = pngtest$(EXEEXT) pngvalid$(EXEEXT)
+@PNG_ARM_NEON_TRUE@am__append_1 = arm/filter_neon.S
+
+# Versioned symbols and restricted exports
+@HAVE_LD_VERSION_SCRIPT_TRUE@@HAVE_SOLARIS_LD_TRUE@am__append_2 = -Wl,-M -Wl,libpng.vers
+@HAVE_LD_VERSION_SCRIPT_TRUE@@HAVE_SOLARIS_LD_FALSE@am__append_3 = -Wl,--version-script=libpng.vers
+# Only restricted exports when possible
+@HAVE_LD_VERSION_SCRIPT_FALSE@am__append_4 = -export-symbols libpng.sym
subdir = .
DIST_COMMON = README $(am__configure_deps) $(dist_man_MANS) \
$(pkginclude_HEADERS) $(srcdir)/Makefile.am \
@@ -81,29 +86,45 @@
am__base_list = \
sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g'
+am__uninstall_files_from_dir = { \
+ test -z "$$files" \
+ || { test ! -d "$$dir" && test ! -f "$$dir" && test ! -r "$$dir"; } \
+ || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
+ $(am__cd) "$$dir" && rm -f $$files; }; \
+ }
am__installdirs = "$(DESTDIR)$(libdir)" "$(DESTDIR)$(bindir)" \
"$(DESTDIR)$(man3dir)" "$(DESTDIR)$(man5dir)" \
- "$(DESTDIR)$(pkgconfigdir)" "$(DESTDIR)$(pkgincludedir)"
+ "$(DESTDIR)$(pkgconfigdir)" "$(DESTDIR)$(pkgincludedir)" \
+ "$(DESTDIR)$(pkgincludedir)"
LTLIBRARIES = $(lib_LTLIBRARIES)
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LIBADD =
+am__libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES_DIST = png.c \
+ pngerror.c pngget.c pngmem.c pngpread.c pngread.c pngrio.c \
+ pngrtran.c pngrutil.c pngset.c pngtrans.c pngwio.c pngwrite.c \
+ pngwtran.c pngwutil.c png.h pngconf.h pngdebug.h pnginfo.h \
+ pngpriv.h pngstruct.h arm/filter_neon.S
+@PNG_ARM_NEON_TRUE@am__objects_1 = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo
am_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS = \
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-png.lo \
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngset.lo \
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo \
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngget.lo \
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrutil.lo \
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngtrans.lo \
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwutil.lo \
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngmem.lo \
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngpread.lo \
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngread.lo \
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrio.lo \
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrtran.lo \
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrutil.lo \
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngset.lo \
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngtrans.lo \
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwio.lo \
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwrite.lo \
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrtran.lo \
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwtran.lo \
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngmem.lo \
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo \
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngpread.lo
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwutil.lo \
+ $(am__objects_1)
+nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS =
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS = \
- $(am_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS)
+ $(am_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) \
+ $(nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS)
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LINK = $(LIBTOOL) --tag=CC \
$(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \
$(AM_CFLAGS) $(CFLAGS) \
@@ -112,11 +133,19 @@
am_pngtest_OBJECTS = pngtest.$(OBJEXT)
pngtest_OBJECTS = $(am_pngtest_OBJECTS)
pngtest_DEPENDENCIES = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
+am_pngvalid_OBJECTS = pngvalid.$(OBJEXT)
+pngvalid_OBJECTS = $(am_pngvalid_OBJECTS)
+pngvalid_DEPENDENCIES = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
SCRIPTS = $(bin_SCRIPTS)
DEFAULT_INCLUDES = -I.@am__isrc@
depcomp = $(SHELL) $(top_srcdir)/depcomp
am__depfiles_maybe = depfiles
am__mv = mv -f
+CPPASCOMPILE = $(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+ $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)
+LTCPPASCOMPILE = $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=compile $(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+ $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)
COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
@@ -127,15 +156,17 @@
--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
$(LDFLAGS) -o $@
SOURCES = $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES) \
- $(pngtest_SOURCES)
-DIST_SOURCES = $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES) \
- $(pngtest_SOURCES)
+ $(nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES) \
+ $(pngtest_SOURCES) $(pngvalid_SOURCES)
+DIST_SOURCES = \
+ $(am__libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES_DIST) \
+ $(pngtest_SOURCES) $(pngvalid_SOURCES)
man3dir = $(mandir)/man3
man5dir = $(mandir)/man5
NROFF = nroff
MANS = $(dist_man_MANS)
DATA = $(pkgconfig_DATA)
-HEADERS = $(pkginclude_HEADERS)
+HEADERS = $(nodist_pkginclude_HEADERS) $(pkginclude_HEADERS)
ETAGS = etags
CTAGS = ctags
am__tty_colors = \
@@ -150,12 +181,15 @@
DIST_ARCHIVES = $(distdir).tar.gz
GZIP_ENV = --best
distuninstallcheck_listfiles = find . -type f -print
+am__distuninstallcheck_listfiles = $(distuninstallcheck_listfiles) \
+ | sed 's|^\./|$(prefix)/|' | grep -v '$(infodir)/dir$$'
distcleancheck_listfiles = find . -type f -print
#distribute headers in /usr/include/libpng/*
pkgincludedir = $(includedir)/$(PNGLIB_BASENAME)
ACLOCAL = @ACLOCAL@
AMTAR = @AMTAR@
+AM_CCASFLAGS = @AM_CCASFLAGS@
AR = @AR@
AS = @AS@
AUTOCONF = @AUTOCONF@
@@ -163,6 +197,9 @@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
CC = @CC@
+CCAS = @CCAS@
+CCASDEPMODE = @CCASDEPMODE@
+CCASFLAGS = @CCASFLAGS@
CCDEPMODE = @CCDEPMODE@
CFLAGS = @CFLAGS@
CPP = @CPP@
@@ -170,6 +207,13 @@
CYGPATH_W = @CYGPATH_W@
DEFS = @DEFS@
DEPDIR = @DEPDIR@
+
+# DFNCPP is normally just CPP - the C preprocessor - but on Solaris and maybe
+# other operating systems (NeXT?) the C preprocessor selected by configure
+# checks input tokens for validity - effectively it performs part of the ANSI-C
+# parsing - and therefore fails with the .df files. configure.ac has special
+# checks for this and sets DFNCPP appropriately.
+DFNCPP = @DFNCPP@
DLLTOOL = @DLLTOOL@
DSYMUTIL = @DSYMUTIL@
DUMPBIN = @DUMPBIN@
@@ -196,6 +240,7 @@
LTLIBOBJS = @LTLIBOBJS@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@
+MANIFEST_TOOL = @MANIFEST_TOOL@
MKDIR_P = @MKDIR_P@
NM = @NM@
NMEDIT = @NMEDIT@
@@ -227,6 +272,7 @@
abs_srcdir = @abs_srcdir@
abs_top_builddir = @abs_top_builddir@
abs_top_srcdir = @abs_top_srcdir@
+ac_ct_AR = @ac_ct_AR@
ac_ct_CC = @ac_ct_CC@
ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
am__include = @am__include@
@@ -284,11 +330,19 @@
PNGLIB_BASENAME = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
# libpng does not follow GNU file name conventions
+
+# "color-tests" requires automake 1.11.1 or later. Enable it if you like,
+# to get red "FAIL" and green "PASS" notations during tests.
+# AUTOMAKE_OPTIONS = foreign color-tests
AUTOMAKE_OPTIONS = foreign
+
+# test programs - run on make check, make distcheck
+TESTS_ENVIRONMENT = srcdir=$(srcdir)
pngtest_SOURCES = pngtest.c
pngtest_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-TESTS = test-pngtest.sh
-TESTS_ENVIRONMENT = srcdir=$(srcdir)
+TESTS = test-pngtest.sh test-pngvalid-simple.sh test-pngvalid-full.sh
+pngvalid_SOURCES = contrib/libtests/pngvalid.c
+pngvalid_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
# man pages
dist_man_MANS = libpng.3 libpngpf.3 png.5
@@ -298,54 +352,56 @@
# rules to build libpng, only build the old library on request
lib_LTLIBRARIES = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
# EXTRA_LTLIBRARIES= libpng.la
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngset.c pngget.c pngrutil.c \
- pngtrans.c pngwutil.c \
- pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
- pngwtran.c pngmem.c pngerror.c pngpread.c \
- png.h pngconf.h pngpriv.h
-
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c \
+ pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c \
+ pngrutil.c pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c \
+ pngwutil.c png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h \
+ pngstruct.h $(am__append_1)
+nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined \
-export-dynamic -version-number \
@PNGLIB_MAJOR@@PNGLIB_MINOR@:@PNGLIB_RELEASE@:0 \
- $(am__append_1) $(am__append_2)
+ $(am__append_2) $(am__append_3) $(am__append_4)
@HAVE_LD_VERSION_SCRIPT_FALSE@libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.sym
@HAVE_LD_VERSION_SCRIPT_TRUE@libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.vers
-
-# Avoid depending upon Character Ranges.
-AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
pkginclude_HEADERS = png.h pngconf.h
+nodist_pkginclude_HEADERS = pnglibconf.h
pkgconfig_DATA = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc
#extra source distribution files.
EXTRA_DIST = \
- ANNOUNCE CHANGES INSTALL LICENSE README TODO CMakeLists.txt \
+ ANNOUNCE CHANGES INSTALL LICENSE README TODO \
pngtest.png pngbar.png pngnow.png pngbar.jpg autogen.sh \
- ${srcdir}/projects/vstudio/* \
- ${srcdir}/projects/visualc6/* \
- ${srcdir}/projects/visualc71/* \
- ${srcdir}/projects/xcode/* \
- ${srcdir}/scripts/* \
- ${srcdir}/contrib/gregbook/* \
- ${srcdir}/contrib/pngminim/* \
- ${srcdir}/contrib/pngminus/* \
- ${srcdir}/contrib/pngsuite/* \
- ${srcdir}/contrib/visupng/* \
+ ${srcdir}/contrib ${srcdir}/projects ${srcdir}/scripts \
$(TESTS) \
- example.c libpng-1.4.9beta01.txt
+ CMakeLists.txt example.c libpng-manual.txt
-CLEANFILES = pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers \
-libpng.sym
+SCRIPT_CLEANFILES = scripts/*.out scripts/*.chk scripts/pnglibconf.dfn
+CLEANFILES = dfn.c dfn?.out pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc \
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers libpng.sym \
+ check.new pnglibconf.* symbols.new pngtest-log.txt \
+ $(SCRIPT_CLEANFILES)
MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
config.sub configure depcomp install-sh ltmain.sh missing
+SUFFIXES = .chk .dfn .out
+
+# We must use -DPNG_NO_USE_READ_MACROS here even when the library may actually
+# be built with PNG_USE_READ_MACROS; this prevents the read macros from
+# interfering with the symbol file format.
+SYMBOL_CFLAGS = -DPNGLIB_LIBNAME='PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0'\
+ -DPNGLIB_VERSION='@PNGLIB_VERSION@'\
+ -DSYMBOL_PREFIX='$(SYMBOL_PREFIX)'\
+ -DPNG_NO_USE_READ_MACROS -DPNG_BUILDING_SYMBOL_TABLE
+
all: config.h
$(MAKE) $(AM_MAKEFLAGS) all-am
.SUFFIXES:
-.SUFFIXES: .c .lo .o .obj
-am--refresh:
+.SUFFIXES: .chk .dfn .out .S .c .lo .o .obj
+am--refresh: Makefile
@:
$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(am__configure_deps)
@for dep in $?; do \
@@ -381,15 +437,13 @@
$(am__aclocal_m4_deps):
config.h: stamp-h1
- @if test ! -f $@; then \
- rm -f stamp-h1; \
- $(MAKE) $(AM_MAKEFLAGS) stamp-h1; \
- else :; fi
+ @if test ! -f $@; then rm -f stamp-h1; else :; fi
+ @if test ! -f $@; then $(MAKE) $(AM_MAKEFLAGS) stamp-h1; else :; fi
stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
@rm -f stamp-h1
cd $(top_builddir) && $(SHELL) ./config.status config.h
-$(srcdir)/config.h.in: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+$(srcdir)/config.h.in: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
($(am__cd) $(top_srcdir) && $(AUTOHEADER))
rm -f stamp-h1
touch $@
@@ -431,7 +485,7 @@
echo "rm -f \"$${dir}/so_locations\""; \
rm -f "$${dir}/so_locations"; \
done
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la: $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES)
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la: $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES)
$(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LINK) -rpath $(libdir) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LIBADD) $(LIBS)
clean-checkPROGRAMS:
@@ -442,9 +496,12 @@
list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
echo " rm -f" $$list; \
rm -f $$list
-pngtest$(EXEEXT): $(pngtest_OBJECTS) $(pngtest_DEPENDENCIES)
+pngtest$(EXEEXT): $(pngtest_OBJECTS) $(pngtest_DEPENDENCIES)
@rm -f pngtest$(EXEEXT)
$(LINK) $(pngtest_OBJECTS) $(pngtest_LDADD) $(LIBS)
+pngvalid$(EXEEXT): $(pngvalid_OBJECTS) $(pngvalid_DEPENDENCIES)
+ @rm -f pngvalid$(EXEEXT)
+ $(LINK) $(pngvalid_OBJECTS) $(pngvalid_LDADD) $(LIBS)
install-binSCRIPTS: $(bin_SCRIPTS)
@$(NORMAL_INSTALL)
test -z "$(bindir)" || $(MKDIR_P) "$(DESTDIR)$(bindir)"
@@ -476,9 +533,7 @@
@list='$(bin_SCRIPTS)'; test -n "$(bindir)" || exit 0; \
files=`for p in $$list; do echo "$$p"; done | \
sed -e 's,.*/,,;$(transform)'`; \
- test -n "$$list" || exit 0; \
- echo " ( cd '$(DESTDIR)$(bindir)' && rm -f" $$files ")"; \
- cd "$(DESTDIR)$(bindir)" && rm -f $$files
+ dir='$(DESTDIR)$(bindir)'; $(am__uninstall_files_from_dir)
mostlyclean-compile:
-rm -f *.$(OBJEXT)
@@ -486,6 +541,7 @@
distclean-compile:
-rm -f *.tab.c
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-png.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngget.Plo@am__quote@
@@ -502,6 +558,35 @@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwtran.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwutil.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pngtest.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pngvalid.Po@am__quote@
+
+.S.o:
+@am__fastdepCCAS_TRUE@ $(CPPASCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCCAS_TRUE@ $(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@ $(CPPASCOMPILE) -c -o $@ $<
+
+.S.obj:
+@am__fastdepCCAS_TRUE@ $(CPPASCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
+@am__fastdepCCAS_TRUE@ $(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@ $(CPPASCOMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+.S.lo:
+@am__fastdepCCAS_TRUE@ $(LTCPPASCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCCAS_TRUE@ $(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@ $(LTCPPASCOMPILE) -c -o $@ $<
+
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo: arm/filter_neon.S
+@am__fastdepCCAS_TRUE@ $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo `test -f 'arm/filter_neon.S' || echo '$(srcdir)/'`arm/filter_neon.S
+@am__fastdepCCAS_TRUE@ $(am__mv) $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.Tpo $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.Plo
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ source='arm/filter_neon.S' object='libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@ $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo `test -f 'arm/filter_neon.S' || echo '$(srcdir)/'`arm/filter_neon.S
.c.o:
@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
@@ -531,12 +616,12 @@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngset.lo: pngset.c
-@am__fastdepCC_TRUE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngset.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngset.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c
-@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngset.Tpo $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngset.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='pngset.c' object='libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngset.lo' libtool=yes @AMDEPBACKSLASH@
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo: pngerror.c
+@am__fastdepCC_TRUE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c
+@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.Tpo $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='pngerror.c' object='libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c
+@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngget.lo: pngget.c
@am__fastdepCC_TRUE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngget.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngget.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c
@@ -545,26 +630,19 @@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrutil.lo: pngrutil.c
-@am__fastdepCC_TRUE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrutil.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrutil.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrutil.lo `test -f 'pngrutil.c' || echo '$(srcdir)/'`pngrutil.c
-@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrutil.Tpo $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrutil.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='pngrutil.c' object='libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngrutil.lo' libtool=yes @AMDEPBACKSLASH@
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngmem.lo: pngmem.c
+@am__fastdepCC_TRUE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngmem.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngmem.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngmem.lo `test -f 'pngmem.c' || echo '$(srcdir)/'`pngmem.c
+@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngmem.Tpo $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngmem.Plo
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+@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo: pngerror.c
-@am__fastdepCC_TRUE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c
-@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.Tpo $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='pngerror.c' object='libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo' libtool=yes @AMDEPBACKSLASH@
+pngvalid.o: contrib/libtests/pngvalid.c
+@am__fastdepCC_TRUE@ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT pngvalid.o -MD -MP -MF $(DEPDIR)/pngvalid.Tpo -c -o pngvalid.o `test -f 'contrib/libtests/pngvalid.c' || echo '$(srcdir)/'`contrib/libtests/pngvalid.c
+@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/pngvalid.Tpo $(DEPDIR)/pngvalid.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='contrib/libtests/pngvalid.c' object='pngvalid.o' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c
+@am__fastdepCC_FALSE@ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o pngvalid.o `test -f 'contrib/libtests/pngvalid.c' || echo '$(srcdir)/'`contrib/libtests/pngvalid.c
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngpread.lo: pngpread.c
-@am__fastdepCC_TRUE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngpread.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngpread.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c
-@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngpread.Tpo $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngpread.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='pngpread.c' object='libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngpread.lo' libtool=yes @AMDEPBACKSLASH@
+pngvalid.obj: contrib/libtests/pngvalid.c
+@am__fastdepCC_TRUE@ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT pngvalid.obj -MD -MP -MF $(DEPDIR)/pngvalid.Tpo -c -o pngvalid.obj `if test -f 'contrib/libtests/pngvalid.c'; then $(CYGPATH_W) 'contrib/libtests/pngvalid.c'; else $(CYGPATH_W) '$(srcdir)/contrib/libtests/pngvalid.c'; fi`
+@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/pngvalid.Tpo $(DEPDIR)/pngvalid.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='contrib/libtests/pngvalid.c' object='pngvalid.obj' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c
+@am__fastdepCC_FALSE@ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o pngvalid.obj `if test -f 'contrib/libtests/pngvalid.c'; then $(CYGPATH_W) 'contrib/libtests/pngvalid.c'; else $(CYGPATH_W) '$(srcdir)/contrib/libtests/pngvalid.c'; fi`
mostlyclean-libtool:
-rm -f *.lo
@@ -672,9 +771,7 @@
sed -n '/\.3[a-z]*$$/p'; \
} | sed -e 's,.*/,,;h;s,.*\.,,;s,^[^3][0-9a-z]*$$,3,;x' \
-e 's,\.[0-9a-z]*$$,,;$(transform);G;s,\n,.,'`; \
- test -z "$$files" || { \
- echo " ( cd '$(DESTDIR)$(man3dir)' && rm -f" $$files ")"; \
- cd "$(DESTDIR)$(man3dir)" && rm -f $$files; }
+ dir='$(DESTDIR)$(man3dir)'; $(am__uninstall_files_from_dir)
install-man5: $(dist_man_MANS)
@$(NORMAL_INSTALL)
test -z "$(man5dir)" || $(MKDIR_P) "$(DESTDIR)$(man5dir)"
@@ -710,9 +807,7 @@
sed -n '/\.5[a-z]*$$/p'; \
} | sed -e 's,.*/,,;h;s,.*\.,,;s,^[^5][0-9a-z]*$$,5,;x' \
-e 's,\.[0-9a-z]*$$,,;$(transform);G;s,\n,.,'`; \
- test -z "$$files" || { \
- echo " ( cd '$(DESTDIR)$(man5dir)' && rm -f" $$files ")"; \
- cd "$(DESTDIR)$(man5dir)" && rm -f $$files; }
+ dir='$(DESTDIR)$(man5dir)'; $(am__uninstall_files_from_dir)
install-pkgconfigDATA: $(pkgconfig_DATA)
@$(NORMAL_INSTALL)
test -z "$(pkgconfigdir)" || $(MKDIR_P) "$(DESTDIR)$(pkgconfigdir)"
@@ -730,9 +825,25 @@
@$(NORMAL_UNINSTALL)
@list='$(pkgconfig_DATA)'; test -n "$(pkgconfigdir)" || list=; \
files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
- test -n "$$files" || exit 0; \
- echo " ( cd '$(DESTDIR)$(pkgconfigdir)' && rm -f" $$files ")"; \
- cd "$(DESTDIR)$(pkgconfigdir)" && rm -f $$files
+ dir='$(DESTDIR)$(pkgconfigdir)'; $(am__uninstall_files_from_dir)
+install-nodist_pkgincludeHEADERS: $(nodist_pkginclude_HEADERS)
+ @$(NORMAL_INSTALL)
+ test -z "$(pkgincludedir)" || $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)"
+ @list='$(nodist_pkginclude_HEADERS)'; test -n "$(pkgincludedir)" || list=; \
+ for p in $$list; do \
+ if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+ echo "$$d$$p"; \
+ done | $(am__base_list) | \
+ while read files; do \
+ echo " $(INSTALL_HEADER) $$files '$(DESTDIR)$(pkgincludedir)'"; \
+ $(INSTALL_HEADER) $$files "$(DESTDIR)$(pkgincludedir)" || exit $$?; \
+ done
+
+uninstall-nodist_pkgincludeHEADERS:
+ @$(NORMAL_UNINSTALL)
+ @list='$(nodist_pkginclude_HEADERS)'; test -n "$(pkgincludedir)" || list=; \
+ files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+ dir='$(DESTDIR)$(pkgincludedir)'; $(am__uninstall_files_from_dir)
install-pkgincludeHEADERS: $(pkginclude_HEADERS)
@$(NORMAL_INSTALL)
test -z "$(pkgincludedir)" || $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)"
@@ -750,9 +861,7 @@
@$(NORMAL_UNINSTALL)
@list='$(pkginclude_HEADERS)'; test -n "$(pkgincludedir)" || list=; \
files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
- test -n "$$files" || exit 0; \
- echo " ( cd '$(DESTDIR)$(pkgincludedir)' && rm -f" $$files ")"; \
- cd "$(DESTDIR)$(pkgincludedir)" && rm -f $$files
+ dir='$(DESTDIR)$(pkgincludedir)'; $(am__uninstall_files_from_dir)
ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
@@ -887,14 +996,15 @@
fi; \
dashes=`echo "$$dashes" | sed s/./=/g`; \
if test "$$failed" -eq 0; then \
- echo "$$grn$$dashes"; \
+ col="$$grn"; \
else \
- echo "$$red$$dashes"; \
+ col="$$red"; \
fi; \
- echo "$$banner"; \
- test -z "$$skipped" || echo "$$skipped"; \
- test -z "$$report" || echo "$$report"; \
- echo "$$dashes$$std"; \
+ echo "$${col}$$dashes$${std}"; \
+ echo "$${col}$$banner$${std}"; \
+ test -z "$$skipped" || echo "$${col}$$skipped$${std}"; \
+ test -z "$$report" || echo "$${col}$$report$${std}"; \
+ echo "$${col}$$dashes$${std}"; \
test "$$failed" -eq 0; \
else :; fi
@@ -943,6 +1053,9 @@
|| exit 1; \
fi; \
done
+ $(MAKE) $(AM_MAKEFLAGS) \
+ top_distdir="$(top_distdir)" distdir="$(distdir)" \
+ dist-hook
-test -n "$(am__skip_mode_fix)" \
|| find "$(distdir)" -type d ! -perm -755 \
-exec chmod u+rwx,go+rx {} \; -o \
@@ -955,7 +1068,7 @@
$(am__remove_distdir)
dist-bzip2: distdir
- tardir=$(distdir) && $(am__tar) | bzip2 -9 -c >$(distdir).tar.bz2
+ tardir=$(distdir) && $(am__tar) | BZIP2=$${BZIP2--9} bzip2 -c >$(distdir).tar.bz2
$(am__remove_distdir)
dist-lzma: distdir
@@ -963,7 +1076,7 @@
$(am__remove_distdir)
dist-xz: distdir
- tardir=$(distdir) && $(am__tar) | xz -c >$(distdir).tar.xz
+ tardir=$(distdir) && $(am__tar) | XZ_OPT=$${XZ_OPT--e} xz -c >$(distdir).tar.xz
$(am__remove_distdir)
dist-tarZ: distdir
@@ -1013,6 +1126,7 @@
&& am__cwd=`pwd` \
&& $(am__cd) $(distdir)/_build \
&& ../configure --srcdir=.. --prefix="$$dc_install_base" \
+ $(AM_DISTCHECK_CONFIGURE_FLAGS) \
$(DISTCHECK_CONFIGURE_FLAGS) \
&& $(MAKE) $(AM_MAKEFLAGS) \
&& $(MAKE) $(AM_MAKEFLAGS) dvi \
@@ -1041,8 +1155,16 @@
list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
distuninstallcheck:
- @$(am__cd) '$(distuninstallcheck_dir)' \
- && test `$(distuninstallcheck_listfiles) | wc -l` -le 1 \
+ @test -n '$(distuninstallcheck_dir)' || { \
+ echo 'ERROR: trying to run $@ with an empty' \
+ '$$(distuninstallcheck_dir)' >&2; \
+ exit 1; \
+ }; \
+ $(am__cd) '$(distuninstallcheck_dir)' || { \
+ echo 'ERROR: cannot chdir into $(distuninstallcheck_dir)' >&2; \
+ exit 1; \
+ }; \
+ test `$(am__distuninstallcheck_listfiles) | wc -l` -eq 0 \
|| { echo "ERROR: files left after uninstall:" ; \
if test -n "$(DESTDIR)"; then \
echo " (check DESTDIR support)"; \
@@ -1065,7 +1187,7 @@
all-am: Makefile $(LTLIBRARIES) $(SCRIPTS) $(MANS) $(DATA) $(HEADERS) \
config.h
installdirs:
- for dir in "$(DESTDIR)$(libdir)" "$(DESTDIR)$(bindir)" "$(DESTDIR)$(man3dir)" "$(DESTDIR)$(man5dir)" "$(DESTDIR)$(pkgconfigdir)" "$(DESTDIR)$(pkgincludedir)"; do \
+ for dir in "$(DESTDIR)$(libdir)" "$(DESTDIR)$(bindir)" "$(DESTDIR)$(man3dir)" "$(DESTDIR)$(man5dir)" "$(DESTDIR)$(pkgconfigdir)" "$(DESTDIR)$(pkgincludedir)" "$(DESTDIR)$(pkgincludedir)"; do \
test -z "$$dir" || $(MKDIR_P) "$$dir"; \
done
install: install-am
@@ -1078,10 +1200,15 @@
installcheck: installcheck-am
install-strip:
- $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
- install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
- `test -z '$(STRIP)' || \
- echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+ if test -z '$(STRIP)'; then \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ install; \
+ else \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+ fi
mostlyclean-generic:
clean-generic:
@@ -1119,8 +1246,8 @@
info-am:
-install-data-am: install-man install-pkgconfigDATA \
- install-pkgincludeHEADERS
+install-data-am: install-man install-nodist_pkgincludeHEADERS \
+ install-pkgconfigDATA install-pkgincludeHEADERS
@$(NORMAL_INSTALL)
$(MAKE) $(AM_MAKEFLAGS) install-data-hook
install-dvi: install-dvi-am
@@ -1171,8 +1298,8 @@
ps-am:
uninstall-am: uninstall-binSCRIPTS uninstall-libLTLIBRARIES \
- uninstall-man uninstall-pkgconfigDATA \
- uninstall-pkgincludeHEADERS
+ uninstall-man uninstall-nodist_pkgincludeHEADERS \
+ uninstall-pkgconfigDATA uninstall-pkgincludeHEADERS
@$(NORMAL_INSTALL)
$(MAKE) $(AM_MAKEFLAGS) uninstall-hook
uninstall-man: uninstall-man3 uninstall-man5
@@ -1183,59 +1310,119 @@
.PHONY: CTAGS GTAGS all all-am am--refresh check check-TESTS check-am \
clean clean-checkPROGRAMS clean-generic clean-libLTLIBRARIES \
clean-libtool ctags dist dist-all dist-bzip2 dist-gzip \
- dist-lzma dist-shar dist-tarZ dist-xz dist-zip distcheck \
- distclean distclean-compile distclean-generic distclean-hdr \
- distclean-libtool distclean-tags distcleancheck distdir \
- distuninstallcheck dvi dvi-am html html-am info info-am \
- install install-am install-binSCRIPTS install-data \
+ dist-hook dist-lzma dist-shar dist-tarZ dist-xz dist-zip \
+ distcheck distclean distclean-compile distclean-generic \
+ distclean-hdr distclean-libtool distclean-tags distcleancheck \
+ distdir distuninstallcheck dvi dvi-am html html-am info \
+ info-am install install-am install-binSCRIPTS install-data \
install-data-am install-data-hook install-dvi install-dvi-am \
install-exec install-exec-am install-exec-hook install-html \
install-html-am install-info install-info-am \
install-libLTLIBRARIES install-man install-man3 install-man5 \
- install-pdf install-pdf-am install-pkgconfigDATA \
- install-pkgincludeHEADERS install-ps install-ps-am \
- install-strip installcheck installcheck-am installdirs \
- maintainer-clean maintainer-clean-generic mostlyclean \
- mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
- pdf pdf-am ps ps-am tags uninstall uninstall-am \
- uninstall-binSCRIPTS uninstall-hook uninstall-libLTLIBRARIES \
- uninstall-man uninstall-man3 uninstall-man5 \
+ install-nodist_pkgincludeHEADERS install-pdf install-pdf-am \
+ install-pkgconfigDATA install-pkgincludeHEADERS install-ps \
+ install-ps-am install-strip installcheck installcheck-am \
+ installdirs maintainer-clean maintainer-clean-generic \
+ mostlyclean mostlyclean-compile mostlyclean-generic \
+ mostlyclean-libtool pdf pdf-am ps ps-am tags uninstall \
+ uninstall-am uninstall-binSCRIPTS uninstall-hook \
+ uninstall-libLTLIBRARIES uninstall-man uninstall-man3 \
+ uninstall-man5 uninstall-nodist_pkgincludeHEADERS \
uninstall-pkgconfigDATA uninstall-pkgincludeHEADERS
-@HAVE_LD_VERSION_SCRIPT_TRUE@ # Versioned symbols and restricted exports
-@HAVE_LD_VERSION_SCRIPT_FALSE@ # Only restricted exports when possible
-
$(PNGLIB_BASENAME).pc: libpng.pc
cp libpng.pc $@
$(PNGLIB_BASENAME)-config: libpng-config
cp libpng-config $@
-libpng.sym: png.h pngconf.h
- rm -f $@ $@.new
- $(CPP) @LIBPNG_DEFINES@ $(CPPFLAGS) -DPNG_BUILDSYMS $(srcdir)/png.h | \
- $(SED) -n -e \
- 's|^.*PNG_FUNCTION_EXPORT[ ]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
- -e 's|^.*PNG_DATA_EXPORT[ ]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
- >$@.new
- mv $@.new $@
+scripts/sym.out scripts/vers.out: png.h pngconf.h pnglibconf.h
+scripts/symbols.out: png.h pngconf.h $(srcdir)/scripts/pnglibconf.h.prebuilt
-libpng.vers: libpng.sym
- rm -f $@ $@.new
- echo PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0 '{global:' > $@.new
- $(SED) s/$$/\;/ libpng.sym >> $@.new
- echo 'local: *; };' >> $@.new
- mv $@.new $@
+libpng.sym: scripts/sym.out
+ rm -f $@
+ cp $? $@
+libpng.vers: scripts/vers.out
+ rm -f $@
+ cp $? $@
+pnglibconf.h: pnglibconf.out
+ rm -f $@
+ cp $? $@
+$(srcdir)/scripts/pnglibconf.h.prebuilt:
+ @echo "Attempting to build $@" >&2
+ @echo "This is a machine generated file, but if you want to make" >&2
+ @echo "a new one simply make 'scripts/pnglibconf.out' and copy that" >&2
+ @exit 1
-test: check
+# The following is necessary to ensure that the local pnglibconf.h is used, not
+# an installed one (this can happen immediately after on a clean system if
+# 'make test' is the first thing the user does.)
+contrib/libtests/pngvalid.o pngtest.o: pnglibconf.h
+
+.dfn.out:
+ rm -f $@ dfn.c dfn?.out
+ test -d scripts || mkdir scripts
+ echo '#include "$<"' >dfn.c
+ $(DFNCPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) @LIBPNG_DEFINES@\
+ $(CPPFLAGS) $(SYMBOL_CFLAGS) dfn.c > dfn1.out
+ $(SED) -n -e 's|^.*PNG_DEFN_MAGIC *-\(.*\)- *PNG_DEFN_END.*$$|\1|p'\
+ dfn1.out >dfn2.out
+ $(SED) -e 's| *PNG_JOIN *||g' -e 's| *$$||' dfn2.out >dfn3.out
+ rm -f dfn.c dfn[12].out
+ mv dfn3.out $@
+
+# The .dfn file for pnglibconf.h is machine generated
+pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
+ rm -f $@ dfn?.out
+ $(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out version=search\
+ ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
+ $(DFA_XTRA) 1>&2
+ $(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
+ rm dfn1.out
+ mv dfn2.out $@
+
+# Symbol checks (.def and .out files should match)
+scripts/symbols.chk: scripts/checksym.awk scripts/symbols.def scripts/symbols.out
+.out.chk:
+ rm -f $@ symbols.new
+ $(AWK) -f ${srcdir}/scripts/checksym.awk ${srcdir}/scripts/${*F}.def\
+ $< >&2
+ mv symbols.new $@
+
+# used on demand to regenerate the standard header, CPPFLAGS should
+# be empty - no non-standard defines
+scripts/pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
+ rm -f $@ dfn?.out
+ test -z "$(CPPFLAGS)"
+ echo "com @PNGLIB_VERSION@ STANDARD API DEFINITION" |\
+ $(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out logunsupported=1
+ version=search ${srcdir}/pngconf.h -\
+ ${srcdir}/scripts/pnglibconf.dfa 1>&2
+ $(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
+ rm dfn1.out
+ mv dfn2.out $@
+
+$(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS): png.h pngconf.h \
+ pnglibconf.h pngpriv.h pngdebug.h pnginfo.h pngstruct.h
+
+test: check-am
+
+# Extra checks
+check: scripts/symbols.chk
+
+# Don't distribute the generated script files
+dist-hook:
+ cd '$(top_distdir)'; rm -f $(SCRIPT_CLEANFILES)
# install the .../include headers as links to the new ones
install-data-hook:
- cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h
+ cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
pngconf.h
+ cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
+ pnglibconf.h
cd $(DESTDIR)$(pkgconfigdir); rm -f libpng.pc
cd $(DESTDIR)$(pkgconfigdir); $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
@@ -1253,9 +1440,12 @@
done
uninstall-hook:
- cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h
+ cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
rm -f $(DESTDIR)$(pkgconfigdir)/libpng.pc
rm -f $(DESTDIR)$(bindir)/libpng-config
+ rm -f $(DESTDIR)$(libdir)/libpng.a
+ rm -f $(DESTDIR)$(libdir)/libpng.la
+ rm -f $(DESTDIR)$(libdir)/libpng.dll.a
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
diff --git a/README b/README
index 35d06f1..5cb8ee1 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.4.9beta01 - July 8, 2011 (shared library 14.0)
+README for libpng version 1.5.10beta01 - February 19, 2012 (shared library 15.0)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.
@@ -58,7 +58,7 @@
privately to Guy, Andreas, or Glenn. They will forward any good
suggestions to the list.
-For a detailed description on using libpng, read libpng.txt. For
+For a detailed description on using libpng, read libpng-manual.txt. For
examples of libpng in a program, see example.c and pngtest.c. For usage
information and restrictions (what little they are) on libpng, see
png.h. For a description on using zlib (the compression library used by
@@ -138,13 +138,17 @@
TODO => Things not implemented in the current library
Y2KINFO => Statement of Y2K compliance
example.c => Example code for using libpng functions
- libpng.3 => manual page for libpng (includes libpng.txt)
- libpng.txt => Description of libpng and its functions
+ libpng.3 => manual page for libpng (includes libpng-manual.txt)
+ libpng-manual.txt => Description of libpng and its functions
libpngpf.3 => manual page for libpng's private functions
png.5 => manual page for the PNG format
png.c => Basic interface functions common to library
- png.h => Library function and interface declarations
- pngconf.h => System specific library configuration
+ png.h => Library function and interface declarations (public)
+ pngpriv.h => Library function and interface declarations (private)
+ pngconf.h => System specific library configuration (public)
+ pngstruct.h => png_struct declaration (private)
+ pnginfo.h => png_info struct declaration (private)
+ pngdebug.h => debugging macros (private)
pngerror.c => Error/warning message I/O functions
pngget.c => Functions for retrieving info from struct
pngmem.c => Memory handling functions
@@ -173,72 +177,16 @@
visupng => Contains a MSVC workspace for VisualPng
projects => Contains project files and workspaces for
building a DLL
- c5builder => Contains a Borland workspace for building
+ cbuilder5 => Contains a Borland workspace for building
libpng and zlib
visualc6 => Contains a Microsoft Visual C++ (MSVC)
workspace for building libpng and zlib
+ visualc71 => Contains a Microsoft Visual C++ (MSVC)
+ workspace for building libpng and zlib
+ xcode => Contains an Apple xcode
+ workspace for building libpng and zlib
scripts => Directory containing scripts for building libpng:
- descrip.mms => VMS makefile for MMS or MMK
- makefile.std => Generic UNIX makefile (cc, creates static
- libpng.a)
- makefile.elf => Linux/ELF makefile symbol versioning,
- (gcc, creates libpng14.so.14.1.4.9beta01)
- makefile.linux => Linux/ELF makefile
- (gcc, creates libpng14.so.14.1.4.9beta01)
- makefile.gcc => Generic makefile (gcc, creates static libpng.a)
- makefile.knr => Archaic UNIX Makefile that converts files with
- ansi2knr (Requires ansi2knr.c from
- ftp://ftp.cs.wisc.edu/ghost)
- makefile.aix => AIX makefile
- makefile.cygwin => Cygwin/gcc makefile
- makefile.darwin => Darwin makefile
- makefile.dec => DEC Alpha UNIX makefile
- makefile.freebsd => FreeBSD makefile
- makefile.hpgcc => HPUX makefile using gcc
- makefile.hpux => HPUX (10.20 and 11.00) makefile
- makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64 bit
- makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
- makefile.intel => Intel C/C++ version 4.0 and later
- makefile.mingw => Mingw/gcc makefile
- makefile.netbsd => NetBSD/cc makefile, makes libpng.so.
- makefile.ne14bsd => NetBSD/cc makefile, makes
- libpng14.so
- makefile.openbsd => OpenBSD makefile
- makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
- makefile.sggcc => Silicon Graphics
- (gcc, creates libpng14.so.14.1.4.9beta01)
- makefile.sunos => Sun makefile
- makefile.solaris => Solaris 2.X makefile
- (gcc, creates libpng14.so.14.1.4.9beta01)
- makefile.so9 => Solaris 9 makefile
- (gcc, creates libpng14.so.14.1.4.9beta01)
- makefile.32sunu => Sun Ultra 32-bit makefile
- makefile.64sunu => Sun Ultra 64-bit makefile
- makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
- makefile.mips => MIPS makefile
- makefile.acorn => Acorn makefile
- makefile.amiga => Amiga makefile
- smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC
- compiler (Requires SCOPTIONS, copied from
- scripts/SCOPTIONS.ppc)
- makefile.atari => Atari makefile
- makefile.beos => BEOS makefile for X86
- makefile.bor => Borland makefile (uses bcc)
- makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode)
- makefile.tc3 => Turbo C 3.0 makefile
- makefile.dj2 => DJGPP 2 makefile
- makefile.msc => Microsoft C makefile
- makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and
- later (does not use assembler code)
- makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
- png32ce.def => module definition for makefile.cegccg
- pngos2.def => OS/2 module definition file used by
- makefile.os2
- pngwin.def => module definition file used by
- makefile.cygwin and makefile.mingw
- makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model
- makevms.com => VMS build script
- SCOPTIONS.ppc => Used with smakefile.ppc
+ (see scripts/README.txt for the list of scripts)
Good luck, and happy coding.
diff --git a/TODO b/TODO
index 0af8d82..6e1f028 100644
--- a/TODO
+++ b/TODO
@@ -2,14 +2,12 @@
TODO - list of things to do for libpng:
Final bug fixes.
-Improve API by hiding the png_struct and png_info structs.
-Finish work on the no-floating-point version (including gamma compensation)
Better C++ wrapper/full C++ implementation?
Fix problem with C++ and EXTERN "C".
cHRM transformation.
-Improve setjmp/longjmp usage or remove it in favor of returning error codes.
+Remove setjmp/longjmp usage in favor of returning error codes.
Add "grayscale->palette" transformation and "palette->grayscale" detection.
-Improved quantizing and dithering.
+Improved dithering.
Multi-lingual error and warning message support.
Complete sRGB transformation (presently it simply uses gamma=0.45455).
Man pages for function calls.
@@ -18,14 +16,12 @@
(counting huffman bits/precompression? filter inertia? filter costs?).
Histogram creation.
Text conversion between different code pages (Latin-1 -> Mac and DOS).
-Build gamma tables using fixed point (and do away with floating point entirely).
Avoid building gamma tables whenever possible.
Use greater precision when changing to linear gamma for compositing against
background and doing rgb-to-gray transformation.
Investigate pre-incremented loop counters and other loop constructions.
Add interpolated method of handling interlacing.
-Provide for conditional compilation of 16-bit support (except for the
- initial stripping down to 8-bits when reading a 16-bit PNG datastream).
Switch to the simpler zlib (zlib/libpng) license if legally possible.
+Extend pngvalid.c to validate more of the libpng transformations.
*/
diff --git a/aclocal.m4 b/aclocal.m4
index 30b5d2b..004cd55 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,7 +1,8 @@
-# generated automatically by aclocal 1.11.1 -*- Autoconf -*-
+# generated automatically by aclocal 1.11.2 -*- Autoconf -*-
# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-# 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+# 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation,
+# Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
@@ -13,8 +14,8 @@
m4_ifndef([AC_AUTOCONF_VERSION],
[m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
-m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.65],,
-[m4_warning([this file was generated for autoconf 2.65.
+m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.68],,
+[m4_warning([this file was generated for autoconf 2.68.
You have another version of autoconf. It may work, but is not guaranteed to.
If you have problems, you may need to regenerate the build system entirely.
To do so, use the procedure documented by the package, typically `autoreconf'.])])
@@ -22,8 +23,8 @@
# libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
#
# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010 Free Software Foundation,
-# Inc.
+# 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+# Foundation, Inc.
# Written by Gordon Matzigkeit, 1996
#
# This file is free software; the Free Software Foundation gives
@@ -32,8 +33,8 @@
m4_define([_LT_COPYING], [dnl
# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010 Free Software Foundation,
-# Inc.
+# 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+# Foundation, Inc.
# Written by Gordon Matzigkeit, 1996
#
# This file is part of GNU Libtool.
@@ -167,6 +168,8 @@
AC_REQUIRE([_LT_PREPARE_SED_QUOTE_VARS])dnl
AC_REQUIRE([_LT_PROG_ECHO_BACKSLASH])dnl
+_LT_DECL([], [PATH_SEPARATOR], [1], [The PATH separator for the build system])dnl
+dnl
_LT_DECL([], [host_alias], [0], [The host system])dnl
_LT_DECL([], [host], [0])dnl
_LT_DECL([], [host_os], [0])dnl
@@ -189,10 +192,13 @@
dnl
m4_require([_LT_FILEUTILS_DEFAULTS])dnl
m4_require([_LT_CHECK_SHELL_FEATURES])dnl
+m4_require([_LT_PATH_CONVERSION_FUNCTIONS])dnl
m4_require([_LT_CMD_RELOAD])dnl
m4_require([_LT_CHECK_MAGIC_METHOD])dnl
+m4_require([_LT_CHECK_SHAREDLIB_FROM_LINKLIB])dnl
m4_require([_LT_CMD_OLD_ARCHIVE])dnl
m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+m4_require([_LT_WITH_SYSROOT])dnl
_LT_CONFIG_LIBTOOL_INIT([
# See if we are running on zsh, and set the options which allow our
@@ -649,7 +655,7 @@
m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
configured by $[0], generated by m4_PACKAGE_STRING.
-Copyright (C) 2010 Free Software Foundation, Inc.
+Copyright (C) 2011 Free Software Foundation, Inc.
This config.lt script is free software; the Free Software Foundation
gives unlimited permision to copy, distribute and modify it."
@@ -763,15 +769,12 @@
# if finds mixed CR/LF and LF-only lines. Since sed operates in
# text mode, it properly converts lines to CR/LF. This bash problem
# is reportedly fixed, but why not run on old versions too?
- sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
- || (rm -f "$cfgfile"; exit 1)
+ sed '$q' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
- _LT_PROG_XSI_SHELLFNS
+ _LT_PROG_REPLACE_SHELLFNS
- sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
- || (rm -f "$cfgfile"; exit 1)
-
- mv -f "$cfgfile" "$ofile" ||
+ mv -f "$cfgfile" "$ofile" ||
(rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
chmod +x "$ofile"
],
@@ -816,6 +819,7 @@
m4_case([$1],
[C], [_LT_LANG(C)],
[C++], [_LT_LANG(CXX)],
+ [Go], [_LT_LANG(GO)],
[Java], [_LT_LANG(GCJ)],
[Fortran 77], [_LT_LANG(F77)],
[Fortran], [_LT_LANG(FC)],
@@ -837,6 +841,29 @@
])# _LT_LANG
+m4_ifndef([AC_PROG_GO], [
+# NOTE: This macro has been submitted for inclusion into #
+# GNU Autoconf as AC_PROG_GO. When it is available in #
+# a released version of Autoconf we should remove this #
+# macro and use it instead. #
+m4_defun([AC_PROG_GO],
+[AC_LANG_PUSH(Go)dnl
+AC_ARG_VAR([GOC], [Go compiler command])dnl
+AC_ARG_VAR([GOFLAGS], [Go compiler flags])dnl
+_AC_ARG_VAR_LDFLAGS()dnl
+AC_CHECK_TOOL(GOC, gccgo)
+if test -z "$GOC"; then
+ if test -n "$ac_tool_prefix"; then
+ AC_CHECK_PROG(GOC, [${ac_tool_prefix}gccgo], [${ac_tool_prefix}gccgo])
+ fi
+fi
+if test -z "$GOC"; then
+ AC_CHECK_PROG(GOC, gccgo, gccgo, false)
+fi
+])#m4_defun
+])#m4_ifndef
+
+
# _LT_LANG_DEFAULT_CONFIG
# -----------------------
m4_defun([_LT_LANG_DEFAULT_CONFIG],
@@ -867,6 +894,10 @@
m4_ifdef([LT_PROG_GCJ],
[m4_define([LT_PROG_GCJ], defn([LT_PROG_GCJ])[LT_LANG(GCJ)])])])])])
+AC_PROVIDE_IFELSE([AC_PROG_GO],
+ [LT_LANG(GO)],
+ [m4_define([AC_PROG_GO], defn([AC_PROG_GO])[LT_LANG(GO)])])
+
AC_PROVIDE_IFELSE([LT_PROG_RC],
[LT_LANG(RC)],
[m4_define([LT_PROG_RC], defn([LT_PROG_RC])[LT_LANG(RC)])])
@@ -969,7 +1000,13 @@
$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
-dynamiclib -Wl,-single_module conftest.c 2>conftest.err
_lt_result=$?
- if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+ # If there is a non-empty error log, and "single_module"
+ # appears in it, assume the flag caused a linker warning
+ if test -s conftest.err && $GREP single_module conftest.err; then
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ # Otherwise, if the output was created with a 0 exit code from
+ # the compiler, it worked.
+ elif test -f libconftest.dylib && test $_lt_result -eq 0; then
lt_cv_apple_cc_single_mod=yes
else
cat conftest.err >&AS_MESSAGE_LOG_FD
@@ -977,6 +1014,7 @@
rm -rf libconftest.dylib*
rm -f conftest.*
fi])
+
AC_CACHE_CHECK([for -exported_symbols_list linker flag],
[lt_cv_ld_exported_symbols_list],
[lt_cv_ld_exported_symbols_list=no
@@ -988,6 +1026,7 @@
[lt_cv_ld_exported_symbols_list=no])
LDFLAGS="$save_LDFLAGS"
])
+
AC_CACHE_CHECK([for -force_load linker flag],[lt_cv_ld_force_load],
[lt_cv_ld_force_load=no
cat > conftest.c << _LT_EOF
@@ -1005,7 +1044,9 @@
echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&AS_MESSAGE_LOG_FD
$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
_lt_result=$?
- if test -f conftest && test ! -s conftest.err && test $_lt_result = 0 && $GREP forced_load conftest 2>&1 >/dev/null; then
+ if test -s conftest.err && $GREP force_load conftest.err; then
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ elif test -f conftest && test $_lt_result -eq 0 && $GREP forced_load conftest >/dev/null 2>&1 ; then
lt_cv_ld_force_load=yes
else
cat conftest.err >&AS_MESSAGE_LOG_FD
@@ -1050,8 +1091,8 @@
])
-# _LT_DARWIN_LINKER_FEATURES
-# --------------------------
+# _LT_DARWIN_LINKER_FEATURES([TAG])
+# ---------------------------------
# Checks for linker and compiler features on darwin
m4_defun([_LT_DARWIN_LINKER_FEATURES],
[
@@ -1062,6 +1103,8 @@
_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
if test "$lt_cv_ld_force_load" = "yes"; then
_LT_TAGVAR(whole_archive_flag_spec, $1)='`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`'
+ m4_case([$1], [F77], [_LT_TAGVAR(compiler_needs_object, $1)=yes],
+ [FC], [_LT_TAGVAR(compiler_needs_object, $1)=yes])
else
_LT_TAGVAR(whole_archive_flag_spec, $1)=''
fi
@@ -1088,30 +1131,41 @@
fi
])
-# _LT_SYS_MODULE_PATH_AIX
-# -----------------------
+# _LT_SYS_MODULE_PATH_AIX([TAGNAME])
+# ----------------------------------
# Links a minimal program and checks the executable
# for the system default hardcoded library path. In most cases,
# this is /usr/lib:/lib, but when the MPI compilers are used
# the location of the communication and MPI libs are included too.
# If we don't find anything, use the default library path according
# to the aix ld manual.
+# Store the results from the different compilers for each TAGNAME.
+# Allow to override them for all tags through lt_cv_aix_libpath.
m4_defun([_LT_SYS_MODULE_PATH_AIX],
[m4_require([_LT_DECL_SED])dnl
-AC_LINK_IFELSE(AC_LANG_PROGRAM,[
-lt_aix_libpath_sed='
- /Import File Strings/,/^$/ {
- /^0/ {
- s/^0 *\(.*\)$/\1/
- p
- }
- }'
-aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
-# Check for a 64-bit object if we didn't find anything.
-if test -z "$aix_libpath"; then
- aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
-fi],[])
-if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+if test "${lt_cv_aix_libpath+set}" = set; then
+ aix_libpath=$lt_cv_aix_libpath
+else
+ AC_CACHE_VAL([_LT_TAGVAR([lt_cv_aix_libpath_], [$1])],
+ [AC_LINK_IFELSE([AC_LANG_PROGRAM],[
+ lt_aix_libpath_sed='[
+ /Import File Strings/,/^$/ {
+ /^0/ {
+ s/^0 *\([^ ]*\) *$/\1/
+ p
+ }
+ }]'
+ _LT_TAGVAR([lt_cv_aix_libpath_], [$1])=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+ # Check for a 64-bit object if we didn't find anything.
+ if test -z "$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])"; then
+ _LT_TAGVAR([lt_cv_aix_libpath_], [$1])=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+ fi],[])
+ if test -z "$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])"; then
+ _LT_TAGVAR([lt_cv_aix_libpath_], [$1])="/usr/lib:/lib"
+ fi
+ ])
+ aix_libpath=$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])
+fi
])# _LT_SYS_MODULE_PATH_AIX
@@ -1136,7 +1190,7 @@
AC_MSG_CHECKING([how to print strings])
# Test print first, because it will be a builtin if present.
-if test "X`print -r -- -n 2>/dev/null`" = X-n && \
+if test "X`( print -r -- -n ) 2>/dev/null`" = X-n && \
test "X`print -r -- $ECHO 2>/dev/null`" = "X$ECHO"; then
ECHO='print -r --'
elif test "X`printf %s $ECHO 2>/dev/null`" = "X$ECHO"; then
@@ -1180,6 +1234,39 @@
])# _LT_PROG_ECHO_BACKSLASH
+# _LT_WITH_SYSROOT
+# ----------------
+AC_DEFUN([_LT_WITH_SYSROOT],
+[AC_MSG_CHECKING([for sysroot])
+AC_ARG_WITH([sysroot],
+[ --with-sysroot[=DIR] Search for dependent libraries within DIR
+ (or the compiler's sysroot if not specified).],
+[], [with_sysroot=no])
+
+dnl lt_sysroot will always be passed unquoted. We quote it here
+dnl in case the user passed a directory name.
+lt_sysroot=
+case ${with_sysroot} in #(
+ yes)
+ if test "$GCC" = yes; then
+ lt_sysroot=`$CC --print-sysroot 2>/dev/null`
+ fi
+ ;; #(
+ /*)
+ lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
+ ;; #(
+ no|'')
+ ;; #(
+ *)
+ AC_MSG_RESULT([${with_sysroot}])
+ AC_MSG_ERROR([The sysroot must be an absolute path.])
+ ;;
+esac
+
+ AC_MSG_RESULT([${lt_sysroot:-no}])
+_LT_DECL([], [lt_sysroot], [0], [The root where to search for ]dnl
+[dependent libraries, and in which our libraries should be installed.])])
+
# _LT_ENABLE_LOCK
# ---------------
m4_defun([_LT_ENABLE_LOCK],
@@ -1301,14 +1388,27 @@
CFLAGS="$SAVE_CFLAGS"
fi
;;
-sparc*-*solaris*)
+*-*solaris*)
# Find out which ABI we are using.
echo 'int i;' > conftest.$ac_ext
if AC_TRY_EVAL(ac_compile); then
case `/usr/bin/file conftest.o` in
*64-bit*)
case $lt_cv_prog_gnu_ld in
- yes*) LD="${LD-ld} -m elf64_sparc" ;;
+ yes*)
+ case $host in
+ i?86-*-solaris*)
+ LD="${LD-ld} -m elf_x86_64"
+ ;;
+ sparc*-*-solaris*)
+ LD="${LD-ld} -m elf64_sparc"
+ ;;
+ esac
+ # GNU ld 2.21 introduced _sol2 emulations. Use them if available.
+ if ${LD-ld} -V | grep _sol2 >/dev/null 2>&1; then
+ LD="${LD-ld}_sol2"
+ fi
+ ;;
*)
if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
LD="${LD-ld} -64"
@@ -1326,14 +1426,47 @@
])# _LT_ENABLE_LOCK
+# _LT_PROG_AR
+# -----------
+m4_defun([_LT_PROG_AR],
+[AC_CHECK_TOOLS(AR, [ar], false)
+: ${AR=ar}
+: ${AR_FLAGS=cru}
+_LT_DECL([], [AR], [1], [The archiver])
+_LT_DECL([], [AR_FLAGS], [1], [Flags to create an archive])
+
+AC_CACHE_CHECK([for archiver @FILE support], [lt_cv_ar_at_file],
+ [lt_cv_ar_at_file=no
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM],
+ [echo conftest.$ac_objext > conftest.lst
+ lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&AS_MESSAGE_LOG_FD'
+ AC_TRY_EVAL([lt_ar_try])
+ if test "$ac_status" -eq 0; then
+ # Ensure the archiver fails upon bogus file names.
+ rm -f conftest.$ac_objext libconftest.a
+ AC_TRY_EVAL([lt_ar_try])
+ if test "$ac_status" -ne 0; then
+ lt_cv_ar_at_file=@
+ fi
+ fi
+ rm -f conftest.* libconftest.a
+ ])
+ ])
+
+if test "x$lt_cv_ar_at_file" = xno; then
+ archiver_list_spec=
+else
+ archiver_list_spec=$lt_cv_ar_at_file
+fi
+_LT_DECL([], [archiver_list_spec], [1],
+ [How to feed a file listing to the archiver])
+])# _LT_PROG_AR
+
+
# _LT_CMD_OLD_ARCHIVE
# -------------------
m4_defun([_LT_CMD_OLD_ARCHIVE],
-[AC_CHECK_TOOL(AR, ar, false)
-test -z "$AR" && AR=ar
-test -z "$AR_FLAGS" && AR_FLAGS=cru
-_LT_DECL([], [AR], [1], [The archiver])
-_LT_DECL([], [AR_FLAGS], [1])
+[_LT_PROG_AR
AC_CHECK_TOOL(STRIP, strip, :)
test -z "$STRIP" && STRIP=:
@@ -1352,13 +1485,13 @@
if test -n "$RANLIB"; then
case $host_os in
openbsd*)
- old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib"
;;
*)
- old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib"
;;
esac
- old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+ old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib"
fi
case $host_os in
@@ -1538,6 +1671,11 @@
lt_cv_sys_max_cmd_len=196608
;;
+ os2*)
+ # The test takes a long time on OS/2.
+ lt_cv_sys_max_cmd_len=8192
+ ;;
+
osf*)
# Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
# due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
@@ -1577,7 +1715,7 @@
# If test is not a shell built-in, we'll probably end up computing a
# maximum length that is only half of the actual maximum length, but
# we can't tell.
- while { test "X"`func_fallback_echo "$teststring$teststring" 2>/dev/null` \
+ while { test "X"`env echo "$teststring$teststring" 2>/dev/null` \
= "X$teststring$teststring"; } >/dev/null 2>&1 &&
test $i != 17 # 1/2 MB should be enough
do
@@ -1673,10 +1811,10 @@
/* When -fvisbility=hidden is used, assume the code has been annotated
correspondingly for the symbols needed. */
#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
-void fnord () __attribute__((visibility("default")));
+int fnord () __attribute__((visibility("default")));
#endif
-void fnord () { int i=42; }
+int fnord () { return 42; }
int main ()
{
void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
@@ -2123,7 +2261,7 @@
case $host_os in
aix3*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
shlibpath_var=LIBPATH
@@ -2132,7 +2270,7 @@
;;
aix[[4-9]]*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
hardcode_into_libs=yes
@@ -2197,7 +2335,7 @@
;;
bsdi[[45]]*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
soname_spec='${libname}${release}${shared_ext}$major'
@@ -2216,8 +2354,9 @@
need_version=no
need_lib_prefix=no
- case $GCC,$host_os in
- yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+ case $GCC,$cc_basename in
+ yes,*)
+ # gcc
library_names_spec='$libname.dll.a'
# DLL is installed to $(libdir)/../bin by postinstall_cmds
postinstall_cmds='base_file=`basename \${file}`~
@@ -2250,13 +2389,71 @@
library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
;;
esac
+ dynamic_linker='Win32 ld.exe'
+ ;;
+
+ *,cl*)
+ # Native MSVC
+ libname_spec='$name'
+ soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+ library_names_spec='${libname}.dll.lib'
+
+ case $build_os in
+ mingw*)
+ sys_lib_search_path_spec=
+ lt_save_ifs=$IFS
+ IFS=';'
+ for lt_path in $LIB
+ do
+ IFS=$lt_save_ifs
+ # Let DOS variable expansion print the short 8.3 style file name.
+ lt_path=`cd "$lt_path" 2>/dev/null && cmd //C "for %i in (".") do @echo %~si"`
+ sys_lib_search_path_spec="$sys_lib_search_path_spec $lt_path"
+ done
+ IFS=$lt_save_ifs
+ # Convert to MSYS style.
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([[a-zA-Z]]\\):| /\\1|g' -e 's|^ ||'`
+ ;;
+ cygwin*)
+ # Convert to unix form, then to dos form, then back to unix form
+ # but this time dos style (no spaces!) so that the unix form looks
+ # like /cygdrive/c/PROGRA~1:/cygdr...
+ sys_lib_search_path_spec=`cygpath --path --unix "$LIB"`
+ sys_lib_search_path_spec=`cygpath --path --dos "$sys_lib_search_path_spec" 2>/dev/null`
+ sys_lib_search_path_spec=`cygpath --path --unix "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ ;;
+ *)
+ sys_lib_search_path_spec="$LIB"
+ if $ECHO "$sys_lib_search_path_spec" | [$GREP ';[c-zC-Z]:/' >/dev/null]; then
+ # It is most probably a Windows format PATH.
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ # FIXME: find the short name or the path components, as spaces are
+ # common. (e.g. "Program Files" -> "PROGRA~1")
+ ;;
+ esac
+
+ # DLL is installed to $(libdir)/../bin by postinstall_cmds
+ postinstall_cmds='base_file=`basename \${file}`~
+ dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+ dldir=$destdir/`dirname \$dlpath`~
+ test -d \$dldir || mkdir -p \$dldir~
+ $install_prog $dir/$dlname \$dldir/$dlname'
+ postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+ dlpath=$dir/\$dldll~
+ $RM \$dlpath'
+ shlibpath_overrides_runpath=yes
+ dynamic_linker='Win32 link.exe'
;;
*)
+ # Assume MSVC wrapper
library_names_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext} $libname.lib'
+ dynamic_linker='Win32 ld.exe'
;;
esac
- dynamic_linker='Win32 ld.exe'
# FIXME: first we should search . and the directory the executable is in
shlibpath_var=PATH
;;
@@ -2277,7 +2474,7 @@
;;
dgux*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
@@ -2285,10 +2482,6 @@
shlibpath_var=LD_LIBRARY_PATH
;;
-freebsd1*)
- dynamic_linker=no
- ;;
-
freebsd* | dragonfly*)
# DragonFly does not have aout. When/if they implement a new
# versioning mechanism, adjust this.
@@ -2296,7 +2489,7 @@
objformat=`/usr/bin/objformat`
else
case $host_os in
- freebsd[[123]]*) objformat=aout ;;
+ freebsd[[23]].*) objformat=aout ;;
*) objformat=elf ;;
esac
fi
@@ -2314,7 +2507,7 @@
esac
shlibpath_var=LD_LIBRARY_PATH
case $host_os in
- freebsd2*)
+ freebsd2.*)
shlibpath_overrides_runpath=yes
;;
freebsd3.[[01]]* | freebsdelf3.[[01]]*)
@@ -2334,17 +2527,18 @@
;;
gnu*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
soname_spec='${libname}${release}${shared_ext}$major'
shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
hardcode_into_libs=yes
;;
haiku*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
dynamic_linker="$host_os runtime_loader"
@@ -2405,7 +2599,7 @@
;;
interix[[3-9]]*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
@@ -2421,7 +2615,7 @@
nonstopux*) version_type=nonstopux ;;
*)
if test "$lt_cv_prog_gnu_ld" = yes; then
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
else
version_type=irix
fi ;;
@@ -2458,9 +2652,9 @@
dynamic_linker=no
;;
-# This must be Linux ELF.
+# This must be glibc/ELF.
linux* | k*bsd*-gnu | kopensolaris*-gnu)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
@@ -2523,7 +2717,7 @@
;;
newsos6)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
shlibpath_var=LD_LIBRARY_PATH
shlibpath_overrides_runpath=yes
@@ -2592,7 +2786,7 @@
;;
solaris*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
@@ -2617,7 +2811,7 @@
;;
sysv4 | sysv4.3*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
soname_spec='${libname}${release}${shared_ext}$major'
shlibpath_var=LD_LIBRARY_PATH
@@ -2641,7 +2835,7 @@
sysv4*MP*)
if test -d /usr/nec ;then
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
soname_spec='$libname${shared_ext}.$major'
shlibpath_var=LD_LIBRARY_PATH
@@ -2672,7 +2866,7 @@
tpf*)
# TPF is a cross-target only. Preferred cross-host = GNU/Linux.
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
@@ -2682,7 +2876,7 @@
;;
uts4*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
soname_spec='${libname}${release}${shared_ext}$major'
shlibpath_var=LD_LIBRARY_PATH
@@ -2960,6 +3154,11 @@
esac
reload_cmds='$LD$reload_flag -o $output$reload_objs'
case $host_os in
+ cygwin* | mingw* | pw32* | cegcc*)
+ if test "$GCC" != yes; then
+ reload_cmds=false
+ fi
+ ;;
darwin*)
if test "$GCC" = yes; then
reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
@@ -3099,7 +3298,7 @@
lt_cv_deplibs_check_method=pass_all
;;
-# This must be Linux ELF.
+# This must be glibc/ELF.
linux* | k*bsd*-gnu | kopensolaris*-gnu)
lt_cv_deplibs_check_method=pass_all
;;
@@ -3178,6 +3377,21 @@
;;
esac
])
+
+file_magic_glob=
+want_nocaseglob=no
+if test "$build" = "$host"; then
+ case $host_os in
+ mingw* | pw32*)
+ if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then
+ want_nocaseglob=yes
+ else
+ file_magic_glob=`echo aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ | $SED -e "s/\(..\)/s\/[[\1]]\/[[\1]]\/g;/g"`
+ fi
+ ;;
+ esac
+fi
+
file_magic_cmd=$lt_cv_file_magic_cmd
deplibs_check_method=$lt_cv_deplibs_check_method
test -z "$deplibs_check_method" && deplibs_check_method=unknown
@@ -3185,7 +3399,11 @@
_LT_DECL([], [deplibs_check_method], [1],
[Method to check whether dependent libraries are shared objects])
_LT_DECL([], [file_magic_cmd], [1],
- [Command to use when deplibs_check_method == "file_magic"])
+ [Command to use when deplibs_check_method = "file_magic"])
+_LT_DECL([], [file_magic_glob], [1],
+ [How to find potential files when deplibs_check_method = "file_magic"])
+_LT_DECL([], [want_nocaseglob], [1],
+ [Find potential files using nocaseglob when deplibs_check_method = "file_magic"])
])# _LT_CHECK_MAGIC_METHOD
@@ -3288,6 +3506,67 @@
dnl AC_DEFUN([AM_PROG_NM], [])
dnl AC_DEFUN([AC_PROG_NM], [])
+# _LT_CHECK_SHAREDLIB_FROM_LINKLIB
+# --------------------------------
+# how to determine the name of the shared library
+# associated with a specific link library.
+# -- PORTME fill in with the dynamic library characteristics
+m4_defun([_LT_CHECK_SHAREDLIB_FROM_LINKLIB],
+[m4_require([_LT_DECL_EGREP])
+m4_require([_LT_DECL_OBJDUMP])
+m4_require([_LT_DECL_DLLTOOL])
+AC_CACHE_CHECK([how to associate runtime and link libraries],
+lt_cv_sharedlib_from_linklib_cmd,
+[lt_cv_sharedlib_from_linklib_cmd='unknown'
+
+case $host_os in
+cygwin* | mingw* | pw32* | cegcc*)
+ # two different shell functions defined in ltmain.sh
+ # decide which to use based on capabilities of $DLLTOOL
+ case `$DLLTOOL --help 2>&1` in
+ *--identify-strict*)
+ lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib
+ ;;
+ *)
+ lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib_fallback
+ ;;
+ esac
+ ;;
+*)
+ # fallback: assume linklib IS sharedlib
+ lt_cv_sharedlib_from_linklib_cmd="$ECHO"
+ ;;
+esac
+])
+sharedlib_from_linklib_cmd=$lt_cv_sharedlib_from_linklib_cmd
+test -z "$sharedlib_from_linklib_cmd" && sharedlib_from_linklib_cmd=$ECHO
+
+_LT_DECL([], [sharedlib_from_linklib_cmd], [1],
+ [Command to associate shared and link libraries])
+])# _LT_CHECK_SHAREDLIB_FROM_LINKLIB
+
+
+# _LT_PATH_MANIFEST_TOOL
+# ----------------------
+# locate the manifest tool
+m4_defun([_LT_PATH_MANIFEST_TOOL],
+[AC_CHECK_TOOL(MANIFEST_TOOL, mt, :)
+test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt
+AC_CACHE_CHECK([if $MANIFEST_TOOL is a manifest tool], [lt_cv_path_mainfest_tool],
+ [lt_cv_path_mainfest_tool=no
+ echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&AS_MESSAGE_LOG_FD
+ $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ if $GREP 'Manifest Tool' conftest.out > /dev/null; then
+ lt_cv_path_mainfest_tool=yes
+ fi
+ rm -f conftest*])
+if test "x$lt_cv_path_mainfest_tool" != xyes; then
+ MANIFEST_TOOL=:
+fi
+_LT_DECL([], [MANIFEST_TOOL], [1], [Manifest tool])dnl
+])# _LT_PATH_MANIFEST_TOOL
+
# LT_LIB_M
# --------
@@ -3414,8 +3693,8 @@
lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
# Transform an extracted symbol line into symbol name and symbol address
-lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([[^ ]]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p'"
-lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([[^ ]]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \(lib[[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([[^ ]]*\)[[ ]]*$/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([[^ ]]*\)[[ ]]*$/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \(lib[[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
# Handle CRLF in mingw tool chain
opt_cr=
@@ -3439,6 +3718,7 @@
# which start with @ or ?.
lt_cv_sys_global_symbol_pipe="$AWK ['"\
" {last_section=section; section=\$ 3};"\
+" /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\
" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
" \$ 0!~/External *\|/{next};"\
" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
@@ -3451,6 +3731,7 @@
else
lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[ ]]\($symcode$symcode*\)[[ ]][[ ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
fi
+ lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'"
# Check to see that the pipe works correctly.
pipe_works=no
@@ -3484,6 +3765,18 @@
if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
cat <<_LT_EOF > conftest.$ac_ext
+/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */
+#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE)
+/* DATA imports from DLLs on WIN32 con't be const, because runtime
+ relocations are performed -- see ld's documentation on pseudo-relocs. */
+# define LT@&t@_DLSYM_CONST
+#elif defined(__osf__)
+/* This system does not cope well with relocations in const data. */
+# define LT@&t@_DLSYM_CONST
+#else
+# define LT@&t@_DLSYM_CONST const
+#endif
+
#ifdef __cplusplus
extern "C" {
#endif
@@ -3495,7 +3788,7 @@
cat <<_LT_EOF >> conftest.$ac_ext
/* The mapping between symbol names and symbols. */
-const struct {
+LT@&t@_DLSYM_CONST struct {
const char *name;
void *address;
}
@@ -3521,15 +3814,15 @@
_LT_EOF
# Now try linking the two files.
mv conftest.$ac_objext conftstm.$ac_objext
- lt_save_LIBS="$LIBS"
- lt_save_CFLAGS="$CFLAGS"
+ lt_globsym_save_LIBS=$LIBS
+ lt_globsym_save_CFLAGS=$CFLAGS
LIBS="conftstm.$ac_objext"
CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)"
if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
pipe_works=yes
fi
- LIBS="$lt_save_LIBS"
- CFLAGS="$lt_save_CFLAGS"
+ LIBS=$lt_globsym_save_LIBS
+ CFLAGS=$lt_globsym_save_CFLAGS
else
echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD
fi
@@ -3562,6 +3855,13 @@
AC_MSG_RESULT(ok)
fi
+# Response file support.
+if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+ nm_file_list_spec='@'
+elif $NM --help 2>/dev/null | grep '[[@]]FILE' >/dev/null; then
+ nm_file_list_spec='@'
+fi
+
_LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1],
[Take the output of nm and produce a listing of raw symbols and C names])
_LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1],
@@ -3572,6 +3872,8 @@
_LT_DECL([global_symbol_to_c_name_address_lib_prefix],
[lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1],
[Transform the output of nm in a C name address pair when lib prefix is needed])
+_LT_DECL([], [nm_file_list_spec], [1],
+ [Specify filename containing input files for $NM])
]) # _LT_CMD_GLOBAL_SYMBOLS
@@ -3583,7 +3885,6 @@
_LT_TAGVAR(lt_prog_compiler_pic, $1)=
_LT_TAGVAR(lt_prog_compiler_static, $1)=
-AC_MSG_CHECKING([for $compiler option to produce PIC])
m4_if([$1], [CXX], [
# C++ specific cases for pic, static, wl, etc.
if test "$GXX" = yes; then
@@ -3688,6 +3989,12 @@
;;
esac
;;
+ mingw* | cygwin* | os2* | pw32* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ m4_if([$1], [GCJ], [],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+ ;;
dgux*)
case $cc_basename in
ec++*)
@@ -3996,7 +4303,9 @@
case $cc_basename in
nvcc*) # Cuda Compiler Driver 2.2
_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Xlinker '
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-Xcompiler -fPIC'
+ if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)="-Xcompiler $_LT_TAGVAR(lt_prog_compiler_pic, $1)"
+ fi
;;
esac
else
@@ -4062,6 +4371,12 @@
_LT_TAGVAR(lt_prog_compiler_pic, $1)='--shared'
_LT_TAGVAR(lt_prog_compiler_static, $1)='--static'
;;
+ nagfor*)
+ # NAG Fortran compiler
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,-Wl,,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
# Portland Group compilers (*not* the Pentium gcc compiler,
# which looks to be a dead project)
@@ -4082,18 +4397,33 @@
;;
*)
case `$CC -V 2>&1 | sed 5q` in
- *Sun\ F* | *Sun*Fortran*)
+ *Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [[1-7]].* | *Sun*Fortran*\ 8.[[0-3]]*)
# Sun Fortran 8.3 passes all unrecognized flags to the linker
_LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
_LT_TAGVAR(lt_prog_compiler_wl, $1)=''
;;
+ *Sun\ F* | *Sun*Fortran*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+ ;;
*Sun\ C*)
# Sun C 5.9
_LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
;;
+ *Intel*\ [[CF]]*Compiler*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ *Portland\ Group*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
esac
;;
esac
@@ -4181,9 +4511,11 @@
_LT_TAGVAR(lt_prog_compiler_pic, $1)="$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])"
;;
esac
-AC_MSG_RESULT([$_LT_TAGVAR(lt_prog_compiler_pic, $1)])
-_LT_TAGDECL([wl], [lt_prog_compiler_wl], [1],
- [How to pass a linker flag through the compiler])
+
+AC_CACHE_CHECK([for $compiler option to produce PIC],
+ [_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)],
+ [_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)=$_LT_TAGVAR(lt_prog_compiler_pic, $1)])
+_LT_TAGVAR(lt_prog_compiler_pic, $1)=$_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)
#
# Check to make sure the PIC flag actually works.
@@ -4202,6 +4534,8 @@
_LT_TAGDECL([pic_flag], [lt_prog_compiler_pic], [1],
[Additional compiler flags for building library objects])
+_LT_TAGDECL([wl], [lt_prog_compiler_wl], [1],
+ [How to pass a linker flag through the compiler])
#
# Check to make sure the static flag actually works.
#
@@ -4222,6 +4556,7 @@
m4_defun([_LT_LINKER_SHLIBS],
[AC_REQUIRE([LT_PATH_LD])dnl
AC_REQUIRE([LT_PATH_NM])dnl
+m4_require([_LT_PATH_MANIFEST_TOOL])dnl
m4_require([_LT_FILEUTILS_DEFAULTS])dnl
m4_require([_LT_DECL_EGREP])dnl
m4_require([_LT_DECL_SED])dnl
@@ -4230,6 +4565,7 @@
AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
m4_if([$1], [CXX], [
_LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
case $host_os in
aix[[4-9]]*)
# If we're using GNU nm, then we don't want the "-C" option.
@@ -4244,15 +4580,22 @@
;;
pw32*)
_LT_TAGVAR(export_symbols_cmds, $1)="$ltdll_cmds"
- ;;
+ ;;
cygwin* | mingw* | cegcc*)
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;/^.*[[ ]]__nm__/s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
- ;;
+ case $cc_basename in
+ cl*)
+ _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
+ ;;
+ *)
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
+ _LT_TAGVAR(exclude_expsyms, $1)=['[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname']
+ ;;
+ esac
+ ;;
*)
_LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
- ;;
+ ;;
esac
- _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
], [
runpath_var=
_LT_TAGVAR(allow_undefined_flag, $1)=
@@ -4267,7 +4610,6 @@
_LT_TAGVAR(hardcode_direct, $1)=no
_LT_TAGVAR(hardcode_direct_absolute, $1)=no
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
- _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
_LT_TAGVAR(hardcode_libdir_separator, $1)=
_LT_TAGVAR(hardcode_minus_L, $1)=no
_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
@@ -4420,7 +4762,8 @@
_LT_TAGVAR(allow_undefined_flag, $1)=unsupported
_LT_TAGVAR(always_export_symbols, $1)=no
_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols'
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
+ _LT_TAGVAR(exclude_expsyms, $1)=['[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname']
if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
@@ -4468,7 +4811,7 @@
if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
&& test "$tmp_diet" = no
then
- tmp_addflag=
+ tmp_addflag=' $pic_flag'
tmp_sharedflag='-shared'
case $cc_basename,$host_cpu in
pgcc*) # Portland Group C compiler
@@ -4517,8 +4860,7 @@
xlf* | bgf* | bgxlf* | mpixlf*)
# IBM XL Fortran 10.1 on PPC cannot create shared libs itself
_LT_TAGVAR(whole_archive_flag_spec, $1)='--whole-archive$convenience --no-whole-archive'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
- _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='-rpath $libdir'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
_LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib'
if test "x$supports_anon_versioning" = xyes; then
_LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
@@ -4538,8 +4880,8 @@
_LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
wlarc=
else
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
fi
;;
@@ -4557,8 +4899,8 @@
_LT_EOF
elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
else
_LT_TAGVAR(ld_shlibs, $1)=no
fi
@@ -4604,8 +4946,8 @@
*)
if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
else
_LT_TAGVAR(ld_shlibs, $1)=no
fi
@@ -4735,7 +5077,7 @@
_LT_TAGVAR(allow_undefined_flag, $1)='-berok'
# Determine the default libpath from the value encoded in an
# empty executable.
- _LT_SYS_MODULE_PATH_AIX
+ _LT_SYS_MODULE_PATH_AIX([$1])
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
else
@@ -4746,7 +5088,7 @@
else
# Determine the default libpath from the value encoded in an
# empty executable.
- _LT_SYS_MODULE_PATH_AIX
+ _LT_SYS_MODULE_PATH_AIX([$1])
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
# Warning - without using the other run time loading flags,
# -berok will link without error, but may produce a broken library.
@@ -4790,20 +5132,64 @@
# Microsoft Visual C++.
# hardcode_libdir_flag_spec is actually meaningless, as there is
# no search path for DLLs.
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- # Tell ltmain to make .lib files, not .a files.
- libext=lib
- # Tell ltmain to make .dll files, not .so files.
- shrext_cmds=".dll"
- # FIXME: Setting linknames here is a bad hack.
- _LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
- # The linker will automatically build a .lib file if we build a DLL.
- _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
- # FIXME: Should let the user specify the lib program.
- _LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs'
- _LT_TAGVAR(fix_srcfile_path, $1)='`cygpath -w "$srcfile"`'
- _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ case $cc_basename in
+ cl*)
+ # Native MSVC
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ _LT_TAGVAR(file_list_spec, $1)='@'
+ # Tell ltmain to make .lib files, not .a files.
+ libext=lib
+ # Tell ltmain to make .dll files, not .so files.
+ shrext_cmds=".dll"
+ # FIXME: Setting linknames here is a bad hack.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-dll~linknames='
+ _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ sed -n -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' -e '1\\\!p' < $export_symbols > $output_objdir/$soname.exp;
+ else
+ sed -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' < $export_symbols > $output_objdir/$soname.exp;
+ fi~
+ $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
+ linknames='
+ # The linker will not automatically build a static lib if we build a DLL.
+ # _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1,DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols'
+ # Don't use ranlib
+ _LT_TAGVAR(old_postinstall_cmds, $1)='chmod 644 $oldlib'
+ _LT_TAGVAR(postlink_cmds, $1)='lt_outputfile="@OUTPUT@"~
+ lt_tool_outputfile="@TOOL_OUTPUT@"~
+ case $lt_outputfile in
+ *.exe|*.EXE) ;;
+ *)
+ lt_outputfile="$lt_outputfile.exe"
+ lt_tool_outputfile="$lt_tool_outputfile.exe"
+ ;;
+ esac~
+ if test "$MANIFEST_TOOL" != ":" && test -f "$lt_outputfile.manifest"; then
+ $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1;
+ $RM "$lt_outputfile.manifest";
+ fi'
+ ;;
+ *)
+ # Assume MSVC wrapper
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ # Tell ltmain to make .lib files, not .a files.
+ libext=lib
+ # Tell ltmain to make .dll files, not .so files.
+ shrext_cmds=".dll"
+ # FIXME: Setting linknames here is a bad hack.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
+ # The linker will automatically build a .lib file if we build a DLL.
+ _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+ # FIXME: Should let the user specify the lib program.
+ _LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs'
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ ;;
+ esac
;;
darwin* | rhapsody*)
@@ -4816,10 +5202,6 @@
_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
;;
- freebsd1*)
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
-
# FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
# support. Future versions do this automatically, but an explicit c++rt0.o
# does not break anything, and helps significantly (at the cost of a little
@@ -4832,7 +5214,7 @@
;;
# Unfortunately, older versions of FreeBSD 2 do not have this feature.
- freebsd2*)
+ freebsd2.*)
_LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
_LT_TAGVAR(hardcode_direct, $1)=yes
_LT_TAGVAR(hardcode_minus_L, $1)=yes
@@ -4841,7 +5223,7 @@
# FreeBSD 3 and greater uses gcc -shared to do shared libraries.
freebsd* | dragonfly*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
_LT_TAGVAR(hardcode_direct, $1)=yes
_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
@@ -4849,7 +5231,7 @@
hpux9*)
if test "$GCC" = yes; then
- _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared $pic_flag ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
else
_LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
fi
@@ -4865,13 +5247,12 @@
hpux10*)
if test "$GCC" = yes && test "$with_gnu_ld" = no; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
else
_LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
fi
if test "$with_gnu_ld" = no; then
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='+b $libdir'
_LT_TAGVAR(hardcode_libdir_separator, $1)=:
_LT_TAGVAR(hardcode_direct, $1)=yes
_LT_TAGVAR(hardcode_direct_absolute, $1)=yes
@@ -4889,10 +5270,10 @@
_LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
;;
ia64*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
;;
*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
;;
esac
else
@@ -4939,16 +5320,31 @@
irix5* | irix6* | nonstopux*)
if test "$GCC" = yes; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
# Try to use the -exported_symbol ld option, if it does not
# work, assume that -exports_file does not work either and
# implicitly export all symbols.
- save_LDFLAGS="$LDFLAGS"
- LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
- AC_LINK_IFELSE(int foo(void) {},
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
- )
- LDFLAGS="$save_LDFLAGS"
+ # This should be the same for all languages, so no per-tag cache variable.
+ AC_CACHE_CHECK([whether the $host_os linker accepts -exported_symbol],
+ [lt_cv_irix_exported_symbol],
+ [save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+ AC_LINK_IFELSE(
+ [AC_LANG_SOURCE(
+ [AC_LANG_CASE([C], [[int foo (void) { return 0; }]],
+ [C++], [[int foo (void) { return 0; }]],
+ [Fortran 77], [[
+ subroutine foo
+ end]],
+ [Fortran], [[
+ subroutine foo
+ end]])])],
+ [lt_cv_irix_exported_symbol=yes],
+ [lt_cv_irix_exported_symbol=no])
+ LDFLAGS="$save_LDFLAGS"])
+ if test "$lt_cv_irix_exported_symbol" = yes; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+ fi
else
_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
@@ -5033,7 +5429,7 @@
osf4* | osf5*) # as osf3* with the addition of -msym flag
if test "$GCC" = yes; then
_LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $pic_flag $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
else
_LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
@@ -5052,9 +5448,9 @@
_LT_TAGVAR(no_undefined_flag, $1)=' -z defs'
if test "$GCC" = yes; then
wlarc='${wl}'
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
_LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ $CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
else
case `$CC -V 2>&1` in
*"Compilers 5.0"*)
@@ -5298,9 +5694,6 @@
_LT_TAGDECL([], [hardcode_libdir_flag_spec], [1],
[Flag to hardcode $libdir into a binary during linking.
This must work even if $libdir does not exist])
-_LT_TAGDECL([], [hardcode_libdir_flag_spec_ld], [1],
- [[If ld is used when linking, flag to hardcode $libdir into a binary
- during linking. This must work even if $libdir does not exist]])
_LT_TAGDECL([], [hardcode_libdir_separator], [1],
[Whether we need a single "-rpath" flag with a separated argument])
_LT_TAGDECL([], [hardcode_direct], [0],
@@ -5326,8 +5719,6 @@
to runtime path list])
_LT_TAGDECL([], [link_all_deplibs], [0],
[Whether libtool must link a program against all its dependency libraries])
-_LT_TAGDECL([], [fix_srcfile_path], [1],
- [Fix the shell variable $srcfile for the compiler])
_LT_TAGDECL([], [always_export_symbols], [0],
[Set to "yes" if exported symbols are required])
_LT_TAGDECL([], [export_symbols_cmds], [2],
@@ -5338,6 +5729,8 @@
[Symbols that must always be exported])
_LT_TAGDECL([], [prelink_cmds], [2],
[Commands necessary for linking programs (against libraries) with templates])
+_LT_TAGDECL([], [postlink_cmds], [2],
+ [Commands necessary for finishing linking programs])
_LT_TAGDECL([], [file_list_spec], [1],
[Specify filename containing input files])
dnl FIXME: Not yet implemented
@@ -5435,6 +5828,7 @@
m4_defun([_LT_LANG_CXX_CONFIG],
[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_PATH_MANIFEST_TOOL])dnl
if test -n "$CXX" && ( test "X$CXX" != "Xno" &&
( (test "X$CXX" = "Xg++" && `g++ -v >/dev/null 2>&1` ) ||
(test "X$CXX" != "Xg++"))) ; then
@@ -5453,7 +5847,6 @@
_LT_TAGVAR(hardcode_direct, $1)=no
_LT_TAGVAR(hardcode_direct_absolute, $1)=no
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
-_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
_LT_TAGVAR(hardcode_libdir_separator, $1)=
_LT_TAGVAR(hardcode_minus_L, $1)=no
_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
@@ -5496,6 +5889,7 @@
# Allow CC to be a program name with arguments.
lt_save_CC=$CC
+ lt_save_CFLAGS=$CFLAGS
lt_save_LD=$LD
lt_save_GCC=$GCC
GCC=$GXX
@@ -5513,6 +5907,7 @@
fi
test -z "${LDCXX+set}" || LD=$LDCXX
CC=${CXX-"c++"}
+ CFLAGS=$CXXFLAGS
compiler=$CC
_LT_TAGVAR(compiler, $1)=$CC
_LT_CC_BASENAME([$compiler])
@@ -5534,8 +5929,8 @@
# Check if GNU C++ uses GNU ld as the underlying linker, since the
# archiving commands below assume that GNU ld is being used.
if test "$with_gnu_ld" = yes; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
@@ -5676,7 +6071,7 @@
_LT_TAGVAR(allow_undefined_flag, $1)='-berok'
# Determine the default libpath from the value encoded in an empty
# executable.
- _LT_SYS_MODULE_PATH_AIX
+ _LT_SYS_MODULE_PATH_AIX([$1])
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
@@ -5688,7 +6083,7 @@
else
# Determine the default libpath from the value encoded in an
# empty executable.
- _LT_SYS_MODULE_PATH_AIX
+ _LT_SYS_MODULE_PATH_AIX([$1])
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
# Warning - without using the other run time loading flags,
# -berok will link without error, but may produce a broken library.
@@ -5730,29 +6125,75 @@
;;
cygwin* | mingw* | pw32* | cegcc*)
- # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
- # as there is no search path for DLLs.
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols'
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- _LT_TAGVAR(always_export_symbols, $1)=no
- _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ case $GXX,$cc_basename in
+ ,cl* | no,cl*)
+ # Native MSVC
+ # hardcode_libdir_flag_spec is actually meaningless, as there is
+ # no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ _LT_TAGVAR(file_list_spec, $1)='@'
+ # Tell ltmain to make .lib files, not .a files.
+ libext=lib
+ # Tell ltmain to make .dll files, not .so files.
+ shrext_cmds=".dll"
+ # FIXME: Setting linknames here is a bad hack.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-dll~linknames='
+ _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ $SED -n -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' -e '1\\\!p' < $export_symbols > $output_objdir/$soname.exp;
+ else
+ $SED -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' < $export_symbols > $output_objdir/$soname.exp;
+ fi~
+ $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
+ linknames='
+ # The linker will not automatically build a static lib if we build a DLL.
+ # _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ # Don't use ranlib
+ _LT_TAGVAR(old_postinstall_cmds, $1)='chmod 644 $oldlib'
+ _LT_TAGVAR(postlink_cmds, $1)='lt_outputfile="@OUTPUT@"~
+ lt_tool_outputfile="@TOOL_OUTPUT@"~
+ case $lt_outputfile in
+ *.exe|*.EXE) ;;
+ *)
+ lt_outputfile="$lt_outputfile.exe"
+ lt_tool_outputfile="$lt_tool_outputfile.exe"
+ ;;
+ esac~
+ func_to_tool_file "$lt_outputfile"~
+ if test "$MANIFEST_TOOL" != ":" && test -f "$lt_outputfile.manifest"; then
+ $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1;
+ $RM "$lt_outputfile.manifest";
+ fi'
+ ;;
+ *)
+ # g++
+ # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+ # as there is no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols'
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=no
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
- if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
- # If the export-symbols file already is a .def file (1st line
- # is EXPORTS), use it as is; otherwise, prepend...
- _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
- cp $export_symbols $output_objdir/$soname.def;
- else
- echo EXPORTS > $output_objdir/$soname.def;
- cat $export_symbols >> $output_objdir/$soname.def;
- fi~
- $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
+ if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ # If the export-symbols file already is a .def file (1st line
+ # is EXPORTS), use it as is; otherwise, prepend...
+ _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ cp $export_symbols $output_objdir/$soname.def;
+ else
+ echo EXPORTS > $output_objdir/$soname.def;
+ cat $export_symbols >> $output_objdir/$soname.def;
+ fi~
+ $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
darwin* | rhapsody*)
_LT_DARWIN_LINKER_FEATURES($1)
;;
@@ -5775,7 +6216,7 @@
esac
;;
- freebsd[[12]]*)
+ freebsd2.*)
# C++ shared libraries reported to be fairly broken before
# switch to ELF
_LT_TAGVAR(ld_shlibs, $1)=no
@@ -5827,7 +6268,7 @@
;;
*)
if test "$GXX" = yes; then
- _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib $pic_flag ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
else
# FIXME: insert proper C++ library support
_LT_TAGVAR(ld_shlibs, $1)=no
@@ -5898,10 +6339,10 @@
_LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
;;
ia64*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $pic_flag ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
;;
*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
;;
esac
fi
@@ -5942,9 +6383,9 @@
*)
if test "$GXX" = yes; then
if test "$with_gnu_ld" = no; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
else
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` -o $lib'
fi
fi
_LT_TAGVAR(link_all_deplibs, $1)=yes
@@ -6222,7 +6663,7 @@
_LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
;;
*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
;;
esac
@@ -6309,9 +6750,9 @@
if test "$GXX" = yes && test "$with_gnu_ld" = no; then
_LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-z ${wl}defs'
if $CC --version | $GREP -v '^2\.7' > /dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
_LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+ $CC -shared $pic_flag -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
# Commands to make compiler produce verbose output that lists
# what "hidden" libraries, object files and flags are used when
@@ -6440,6 +6881,7 @@
fi # test -n "$compiler"
CC=$lt_save_CC
+ CFLAGS=$lt_save_CFLAGS
LDCXX=$LD
LD=$lt_save_LD
GCC=$lt_save_GCC
@@ -6454,6 +6896,29 @@
])# _LT_LANG_CXX_CONFIG
+# _LT_FUNC_STRIPNAME_CNF
+# ----------------------
+# func_stripname_cnf prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+#
+# This function is identical to the (non-XSI) version of func_stripname,
+# except this one can be used by m4 code that may be executed by configure,
+# rather than the libtool script.
+m4_defun([_LT_FUNC_STRIPNAME_CNF],[dnl
+AC_REQUIRE([_LT_DECL_SED])
+AC_REQUIRE([_LT_PROG_ECHO_BACKSLASH])
+func_stripname_cnf ()
+{
+ case ${2} in
+ .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
+ *) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
+ esac
+} # func_stripname_cnf
+])# _LT_FUNC_STRIPNAME_CNF
+
# _LT_SYS_HIDDEN_LIBDEPS([TAGNAME])
# ---------------------------------
# Figure out "hidden" library dependencies from verbose
@@ -6462,6 +6927,7 @@
# objects, libraries and library flags.
m4_defun([_LT_SYS_HIDDEN_LIBDEPS],
[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+AC_REQUIRE([_LT_FUNC_STRIPNAME_CNF])dnl
# Dependencies to place before and after the object being linked:
_LT_TAGVAR(predep_objects, $1)=
_LT_TAGVAR(postdep_objects, $1)=
@@ -6511,7 +6977,20 @@
}
};
_LT_EOF
+], [$1], [GO], [cat > conftest.$ac_ext <<_LT_EOF
+package foo
+func foo() {
+}
+_LT_EOF
])
+
+_lt_libdeps_save_CFLAGS=$CFLAGS
+case "$CC $CFLAGS " in #(
+*\ -flto*\ *) CFLAGS="$CFLAGS -fno-lto" ;;
+*\ -fwhopr*\ *) CFLAGS="$CFLAGS -fno-whopr" ;;
+*\ -fuse-linker-plugin*\ *) CFLAGS="$CFLAGS -fno-use-linker-plugin" ;;
+esac
+
dnl Parse the compiler output and extract the necessary
dnl objects, libraries and library flags.
if AC_TRY_EVAL(ac_compile); then
@@ -6523,7 +7002,7 @@
pre_test_object_deps_done=no
for p in `eval "$output_verbose_link_cmd"`; do
- case $p in
+ case ${prev}${p} in
-L* | -R* | -l*)
# Some compilers place space between "-{L,R}" and the path.
@@ -6532,13 +7011,22 @@
test $p = "-R"; then
prev=$p
continue
- else
- prev=
fi
+ # Expand the sysroot to ease extracting the directories later.
+ if test -z "$prev"; then
+ case $p in
+ -L*) func_stripname_cnf '-L' '' "$p"; prev=-L; p=$func_stripname_result ;;
+ -R*) func_stripname_cnf '-R' '' "$p"; prev=-R; p=$func_stripname_result ;;
+ -l*) func_stripname_cnf '-l' '' "$p"; prev=-l; p=$func_stripname_result ;;
+ esac
+ fi
+ case $p in
+ =*) func_stripname_cnf '=' '' "$p"; p=$lt_sysroot$func_stripname_result ;;
+ esac
if test "$pre_test_object_deps_done" = no; then
- case $p in
- -L* | -R*)
+ case ${prev} in
+ -L | -R)
# Internal compiler library paths should come after those
# provided the user. The postdeps already come after the
# user supplied libs so there is no need to process them.
@@ -6558,8 +7046,10 @@
_LT_TAGVAR(postdeps, $1)="${_LT_TAGVAR(postdeps, $1)} ${prev}${p}"
fi
fi
+ prev=
;;
+ *.lto.$objext) ;; # Ignore GCC LTO objects
*.$objext)
# This assumes that the test object file only shows up
# once in the compiler output.
@@ -6595,6 +7085,7 @@
fi
$RM -f confest.$objext
+CFLAGS=$_lt_libdeps_save_CFLAGS
# PORTME: override above test on systems where it is broken
m4_if([$1], [CXX],
@@ -6694,7 +7185,6 @@
_LT_TAGVAR(hardcode_direct, $1)=no
_LT_TAGVAR(hardcode_direct_absolute, $1)=no
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
-_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
_LT_TAGVAR(hardcode_libdir_separator, $1)=
_LT_TAGVAR(hardcode_minus_L, $1)=no
_LT_TAGVAR(hardcode_automatic, $1)=no
@@ -6744,7 +7234,9 @@
# Allow CC to be a program name with arguments.
lt_save_CC="$CC"
lt_save_GCC=$GCC
+ lt_save_CFLAGS=$CFLAGS
CC=${F77-"f77"}
+ CFLAGS=$FFLAGS
compiler=$CC
_LT_TAGVAR(compiler, $1)=$CC
_LT_CC_BASENAME([$compiler])
@@ -6798,6 +7290,7 @@
GCC=$lt_save_GCC
CC="$lt_save_CC"
+ CFLAGS="$lt_save_CFLAGS"
fi # test "$_lt_disable_F77" != yes
AC_LANG_POP
@@ -6824,7 +7317,6 @@
_LT_TAGVAR(hardcode_direct, $1)=no
_LT_TAGVAR(hardcode_direct_absolute, $1)=no
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
-_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
_LT_TAGVAR(hardcode_libdir_separator, $1)=
_LT_TAGVAR(hardcode_minus_L, $1)=no
_LT_TAGVAR(hardcode_automatic, $1)=no
@@ -6874,7 +7366,9 @@
# Allow CC to be a program name with arguments.
lt_save_CC="$CC"
lt_save_GCC=$GCC
+ lt_save_CFLAGS=$CFLAGS
CC=${FC-"f95"}
+ CFLAGS=$FCFLAGS
compiler=$CC
GCC=$ac_cv_fc_compiler_gnu
@@ -6930,7 +7424,8 @@
fi # test -n "$compiler"
GCC=$lt_save_GCC
- CC="$lt_save_CC"
+ CC=$lt_save_CC
+ CFLAGS=$lt_save_CFLAGS
fi # test "$_lt_disable_FC" != yes
AC_LANG_POP
@@ -6967,10 +7462,12 @@
_LT_LINKER_BOILERPLATE
# Allow CC to be a program name with arguments.
-lt_save_CC="$CC"
+lt_save_CC=$CC
+lt_save_CFLAGS=$CFLAGS
lt_save_GCC=$GCC
GCC=yes
CC=${GCJ-"gcj"}
+CFLAGS=$GCJFLAGS
compiler=$CC
_LT_TAGVAR(compiler, $1)=$CC
_LT_TAGVAR(LD, $1)="$LD"
@@ -6997,10 +7494,78 @@
AC_LANG_RESTORE
GCC=$lt_save_GCC
-CC="$lt_save_CC"
+CC=$lt_save_CC
+CFLAGS=$lt_save_CFLAGS
])# _LT_LANG_GCJ_CONFIG
+# _LT_LANG_GO_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for the GNU Go compiler
+# are suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_GO_CONFIG],
+[AC_REQUIRE([LT_PROG_GO])dnl
+AC_LANG_SAVE
+
+# Source file extension for Go test sources.
+ac_ext=go
+
+# Object file extension for compiled Go test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="package main; func main() { }"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='package main; func main() { }'
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC=$CC
+lt_save_CFLAGS=$CFLAGS
+lt_save_GCC=$GCC
+GCC=yes
+CC=${GOC-"gccgo"}
+CFLAGS=$GOFLAGS
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_TAGVAR(LD, $1)="$LD"
+_LT_CC_BASENAME([$compiler])
+
+# Go did not exist at the time GCC didn't implicitly link libc in.
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+
+if test -n "$compiler"; then
+ _LT_COMPILER_NO_RTTI($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+fi
+
+AC_LANG_RESTORE
+
+GCC=$lt_save_GCC
+CC=$lt_save_CC
+CFLAGS=$lt_save_CFLAGS
+])# _LT_LANG_GO_CONFIG
+
+
# _LT_LANG_RC_CONFIG([TAG])
# -------------------------
# Ensure that the configuration variables for the Windows resource compiler
@@ -7032,9 +7597,11 @@
# Allow CC to be a program name with arguments.
lt_save_CC="$CC"
+lt_save_CFLAGS=$CFLAGS
lt_save_GCC=$GCC
GCC=
CC=${RC-"windres"}
+CFLAGS=
compiler=$CC
_LT_TAGVAR(compiler, $1)=$CC
_LT_CC_BASENAME([$compiler])
@@ -7047,7 +7614,8 @@
GCC=$lt_save_GCC
AC_LANG_RESTORE
-CC="$lt_save_CC"
+CC=$lt_save_CC
+CFLAGS=$lt_save_CFLAGS
])# _LT_LANG_RC_CONFIG
@@ -7067,6 +7635,13 @@
dnl AC_DEFUN([LT_AC_PROG_GCJ], [])
+# LT_PROG_GO
+# ----------
+AC_DEFUN([LT_PROG_GO],
+[AC_CHECK_TOOL(GOC, gccgo,)
+])
+
+
# LT_PROG_RC
# ----------
AC_DEFUN([LT_PROG_RC],
@@ -7106,6 +7681,15 @@
AC_SUBST([OBJDUMP])
])
+# _LT_DECL_DLLTOOL
+# ----------------
+# Ensure DLLTOOL variable is set.
+m4_defun([_LT_DECL_DLLTOOL],
+[AC_CHECK_TOOL(DLLTOOL, dlltool, false)
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+_LT_DECL([], [DLLTOOL], [1], [DLL creation program])
+AC_SUBST([DLLTOOL])
+])
# _LT_DECL_SED
# ------------
@@ -7197,8 +7781,8 @@
# Try some XSI features
xsi_shell=no
( _lt_dummy="a/b/c"
- test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
- = c,a/b,, \
+ test "${_lt_dummy##*/},${_lt_dummy%/*},${_lt_dummy#??}"${_lt_dummy%"$_lt_dummy"}, \
+ = c,a/b,b/c, \
&& eval 'test $(( 1 + 1 )) -eq 2 \
&& test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
&& xsi_shell=yes
@@ -7237,210 +7821,166 @@
])# _LT_CHECK_SHELL_FEATURES
-# _LT_PROG_XSI_SHELLFNS
-# ---------------------
-# Bourne and XSI compatible variants of some useful shell functions.
-m4_defun([_LT_PROG_XSI_SHELLFNS],
-[case $xsi_shell in
- yes)
- cat << \_LT_EOF >> "$cfgfile"
-
-# func_dirname file append nondir_replacement
-# Compute the dirname of FILE. If nonempty, add APPEND to the result,
-# otherwise set result to NONDIR_REPLACEMENT.
-func_dirname ()
-{
- case ${1} in
- */*) func_dirname_result="${1%/*}${2}" ;;
- * ) func_dirname_result="${3}" ;;
- esac
-}
-
-# func_basename file
-func_basename ()
-{
- func_basename_result="${1##*/}"
-}
-
-# func_dirname_and_basename file append nondir_replacement
-# perform func_basename and func_dirname in a single function
-# call:
-# dirname: Compute the dirname of FILE. If nonempty,
-# add APPEND to the result, otherwise set result
-# to NONDIR_REPLACEMENT.
-# value returned in "$func_dirname_result"
-# basename: Compute filename of FILE.
-# value retuned in "$func_basename_result"
-# Implementation must be kept synchronized with func_dirname
-# and func_basename. For efficiency, we do not delegate to
-# those functions but instead duplicate the functionality here.
-func_dirname_and_basename ()
-{
- case ${1} in
- */*) func_dirname_result="${1%/*}${2}" ;;
- * ) func_dirname_result="${3}" ;;
- esac
- func_basename_result="${1##*/}"
-}
-
-# func_stripname prefix suffix name
-# strip PREFIX and SUFFIX off of NAME.
-# PREFIX and SUFFIX must not contain globbing or regex special
-# characters, hashes, percent signs, but SUFFIX may contain a leading
-# dot (in which case that matches only a dot).
-func_stripname ()
-{
- # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
- # positional parameters, so assign one to ordinary parameter first.
- func_stripname_result=${3}
- func_stripname_result=${func_stripname_result#"${1}"}
- func_stripname_result=${func_stripname_result%"${2}"}
-}
-
-# func_opt_split
-func_opt_split ()
-{
- func_opt_split_opt=${1%%=*}
- func_opt_split_arg=${1#*=}
-}
-
-# func_lo2o object
-func_lo2o ()
-{
- case ${1} in
- *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
- *) func_lo2o_result=${1} ;;
- esac
-}
-
-# func_xform libobj-or-source
-func_xform ()
-{
- func_xform_result=${1%.*}.lo
-}
-
-# func_arith arithmetic-term...
-func_arith ()
-{
- func_arith_result=$(( $[*] ))
-}
-
-# func_len string
-# STRING may not start with a hyphen.
-func_len ()
-{
- func_len_result=${#1}
-}
-
-_LT_EOF
- ;;
- *) # Bourne compatible functions.
- cat << \_LT_EOF >> "$cfgfile"
-
-# func_dirname file append nondir_replacement
-# Compute the dirname of FILE. If nonempty, add APPEND to the result,
-# otherwise set result to NONDIR_REPLACEMENT.
-func_dirname ()
-{
- # Extract subdirectory from the argument.
- func_dirname_result=`$ECHO "${1}" | $SED "$dirname"`
- if test "X$func_dirname_result" = "X${1}"; then
- func_dirname_result="${3}"
- else
- func_dirname_result="$func_dirname_result${2}"
- fi
-}
-
-# func_basename file
-func_basename ()
-{
- func_basename_result=`$ECHO "${1}" | $SED "$basename"`
-}
-
-dnl func_dirname_and_basename
-dnl A portable version of this function is already defined in general.m4sh
-dnl so there is no need for it here.
-
-# func_stripname prefix suffix name
-# strip PREFIX and SUFFIX off of NAME.
-# PREFIX and SUFFIX must not contain globbing or regex special
-# characters, hashes, percent signs, but SUFFIX may contain a leading
-# dot (in which case that matches only a dot).
-# func_strip_suffix prefix name
-func_stripname ()
-{
- case ${2} in
- .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
- *) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
- esac
-}
-
-# sed scripts:
-my_sed_long_opt='1s/^\(-[[^=]]*\)=.*/\1/;q'
-my_sed_long_arg='1s/^-[[^=]]*=//'
-
-# func_opt_split
-func_opt_split ()
-{
- func_opt_split_opt=`$ECHO "${1}" | $SED "$my_sed_long_opt"`
- func_opt_split_arg=`$ECHO "${1}" | $SED "$my_sed_long_arg"`
-}
-
-# func_lo2o object
-func_lo2o ()
-{
- func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"`
-}
-
-# func_xform libobj-or-source
-func_xform ()
-{
- func_xform_result=`$ECHO "${1}" | $SED 's/\.[[^.]]*$/.lo/'`
-}
-
-# func_arith arithmetic-term...
-func_arith ()
-{
- func_arith_result=`expr "$[@]"`
-}
-
-# func_len string
-# STRING may not start with a hyphen.
-func_len ()
-{
- func_len_result=`expr "$[1]" : ".*" 2>/dev/null || echo $max_cmd_len`
-}
-
-_LT_EOF
-esac
-
-case $lt_shell_append in
- yes)
- cat << \_LT_EOF >> "$cfgfile"
-
-# func_append var value
-# Append VALUE to the end of shell variable VAR.
-func_append ()
-{
- eval "$[1]+=\$[2]"
-}
-_LT_EOF
- ;;
- *)
- cat << \_LT_EOF >> "$cfgfile"
-
-# func_append var value
-# Append VALUE to the end of shell variable VAR.
-func_append ()
-{
- eval "$[1]=\$$[1]\$[2]"
-}
-
-_LT_EOF
- ;;
- esac
+# _LT_PROG_FUNCTION_REPLACE (FUNCNAME, REPLACEMENT-BODY)
+# ------------------------------------------------------
+# In `$cfgfile', look for function FUNCNAME delimited by `^FUNCNAME ()$' and
+# '^} FUNCNAME ', and replace its body with REPLACEMENT-BODY.
+m4_defun([_LT_PROG_FUNCTION_REPLACE],
+[dnl {
+sed -e '/^$1 ()$/,/^} # $1 /c\
+$1 ()\
+{\
+m4_bpatsubsts([$2], [$], [\\], [^\([ ]\)], [\\\1])
+} # Extended-shell $1 implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
])
+
+# _LT_PROG_REPLACE_SHELLFNS
+# -------------------------
+# Replace existing portable implementations of several shell functions with
+# equivalent extended shell implementations where those features are available..
+m4_defun([_LT_PROG_REPLACE_SHELLFNS],
+[if test x"$xsi_shell" = xyes; then
+ _LT_PROG_FUNCTION_REPLACE([func_dirname], [dnl
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac])
+
+ _LT_PROG_FUNCTION_REPLACE([func_basename], [dnl
+ func_basename_result="${1##*/}"])
+
+ _LT_PROG_FUNCTION_REPLACE([func_dirname_and_basename], [dnl
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+ func_basename_result="${1##*/}"])
+
+ _LT_PROG_FUNCTION_REPLACE([func_stripname], [dnl
+ # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+ # positional parameters, so assign one to ordinary parameter first.
+ func_stripname_result=${3}
+ func_stripname_result=${func_stripname_result#"${1}"}
+ func_stripname_result=${func_stripname_result%"${2}"}])
+
+ _LT_PROG_FUNCTION_REPLACE([func_split_long_opt], [dnl
+ func_split_long_opt_name=${1%%=*}
+ func_split_long_opt_arg=${1#*=}])
+
+ _LT_PROG_FUNCTION_REPLACE([func_split_short_opt], [dnl
+ func_split_short_opt_arg=${1#??}
+ func_split_short_opt_name=${1%"$func_split_short_opt_arg"}])
+
+ _LT_PROG_FUNCTION_REPLACE([func_lo2o], [dnl
+ case ${1} in
+ *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+ *) func_lo2o_result=${1} ;;
+ esac])
+
+ _LT_PROG_FUNCTION_REPLACE([func_xform], [ func_xform_result=${1%.*}.lo])
+
+ _LT_PROG_FUNCTION_REPLACE([func_arith], [ func_arith_result=$(( $[*] ))])
+
+ _LT_PROG_FUNCTION_REPLACE([func_len], [ func_len_result=${#1}])
+fi
+
+if test x"$lt_shell_append" = xyes; then
+ _LT_PROG_FUNCTION_REPLACE([func_append], [ eval "${1}+=\\${2}"])
+
+ _LT_PROG_FUNCTION_REPLACE([func_append_quoted], [dnl
+ func_quote_for_eval "${2}"
+dnl m4 expansion turns \\\\ into \\, and then the shell eval turns that into \
+ eval "${1}+=\\\\ \\$func_quote_for_eval_result"])
+
+ # Save a `func_append' function call where possible by direct use of '+='
+ sed -e 's%func_append \([[a-zA-Z_]]\{1,\}\) "%\1+="%g' $cfgfile > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+ test 0 -eq $? || _lt_function_replace_fail=:
+else
+ # Save a `func_append' function call even when '+=' is not available
+ sed -e 's%func_append \([[a-zA-Z_]]\{1,\}\) "%\1="$\1%g' $cfgfile > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+ test 0 -eq $? || _lt_function_replace_fail=:
+fi
+
+if test x"$_lt_function_replace_fail" = x":"; then
+ AC_MSG_WARN([Unable to substitute extended shell functions in $ofile])
+fi
+])
+
+# _LT_PATH_CONVERSION_FUNCTIONS
+# -----------------------------
+# Determine which file name conversion functions should be used by
+# func_to_host_file (and, implicitly, by func_to_host_path). These are needed
+# for certain cross-compile configurations and native mingw.
+m4_defun([_LT_PATH_CONVERSION_FUNCTIONS],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+AC_MSG_CHECKING([how to convert $build file names to $host format])
+AC_CACHE_VAL(lt_cv_to_host_file_cmd,
+[case $host in
+ *-*-mingw* )
+ case $build in
+ *-*-mingw* ) # actually msys
+ lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32
+ ;;
+ *-*-cygwin* )
+ lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32
+ ;;
+ * ) # otherwise, assume *nix
+ lt_cv_to_host_file_cmd=func_convert_file_nix_to_w32
+ ;;
+ esac
+ ;;
+ *-*-cygwin* )
+ case $build in
+ *-*-mingw* ) # actually msys
+ lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin
+ ;;
+ *-*-cygwin* )
+ lt_cv_to_host_file_cmd=func_convert_file_noop
+ ;;
+ * ) # otherwise, assume *nix
+ lt_cv_to_host_file_cmd=func_convert_file_nix_to_cygwin
+ ;;
+ esac
+ ;;
+ * ) # unhandled hosts (and "normal" native builds)
+ lt_cv_to_host_file_cmd=func_convert_file_noop
+ ;;
+esac
+])
+to_host_file_cmd=$lt_cv_to_host_file_cmd
+AC_MSG_RESULT([$lt_cv_to_host_file_cmd])
+_LT_DECL([to_host_file_cmd], [lt_cv_to_host_file_cmd],
+ [0], [convert $build file names to $host format])dnl
+
+AC_MSG_CHECKING([how to convert $build file names to toolchain format])
+AC_CACHE_VAL(lt_cv_to_tool_file_cmd,
+[#assume ordinary cross tools, or native build.
+lt_cv_to_tool_file_cmd=func_convert_file_noop
+case $host in
+ *-*-mingw* )
+ case $build in
+ *-*-mingw* ) # actually msys
+ lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32
+ ;;
+ esac
+ ;;
+esac
+])
+to_tool_file_cmd=$lt_cv_to_tool_file_cmd
+AC_MSG_RESULT([$lt_cv_to_tool_file_cmd])
+_LT_DECL([to_tool_file_cmd], [lt_cv_to_tool_file_cmd],
+ [0], [convert $build files to toolchain format])dnl
+])# _LT_PATH_CONVERSION_FUNCTIONS
+
# Helper functions for option handling. -*- Autoconf -*-
#
# Copyright (C) 2004, 2005, 2007, 2008, 2009 Free Software Foundation,
@@ -7766,9 +8306,24 @@
# MODE is either `yes' or `no'. If omitted, it defaults to `both'.
m4_define([_LT_WITH_PIC],
[AC_ARG_WITH([pic],
- [AS_HELP_STRING([--with-pic],
+ [AS_HELP_STRING([--with-pic@<:@=PKGS@:>@],
[try to use only PIC/non-PIC objects @<:@default=use both@:>@])],
- [pic_mode="$withval"],
+ [lt_p=${PACKAGE-default}
+ case $withval in
+ yes|no) pic_mode=$withval ;;
+ *)
+ pic_mode=default
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for lt_pkg in $withval; do
+ IFS="$lt_save_ifs"
+ if test "X$lt_pkg" = "X$lt_p"; then
+ pic_mode=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac],
[pic_mode=default])
test -z "$pic_mode" && pic_mode=m4_default([$1], [default])
@@ -7938,17 +8493,17 @@
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
-# Generated from ltversion.in.
+# @configure_input@
-# serial 3175 ltversion.m4
+# serial 3337 ltversion.m4
# This file is part of GNU Libtool
-m4_define([LT_PACKAGE_VERSION], [2.2.10])
-m4_define([LT_PACKAGE_REVISION], [1.3175])
+m4_define([LT_PACKAGE_VERSION], [2.4.2])
+m4_define([LT_PACKAGE_REVISION], [1.3337])
AC_DEFUN([LTVERSION_VERSION],
-[macro_version='2.2.10'
-macro_revision='1.3175'
+[macro_version='2.4.2'
+macro_revision='1.3337'
_LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
_LT_DECL(, macro_revision, 0)
])
@@ -8052,12 +8607,15 @@
m4_ifndef([_LT_PROG_FC], [AC_DEFUN([_LT_PROG_FC])])
m4_ifndef([_LT_PROG_CXX], [AC_DEFUN([_LT_PROG_CXX])])
-# Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008, 2011 Free Software
+# Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
+# serial 1
+
# AM_AUTOMAKE_VERSION(VERSION)
# ----------------------------
# Automake X.Y traces this macro to ensure aclocal.m4 has been
@@ -8067,7 +8625,7 @@
[am__api_version='1.11'
dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
dnl require some minimum version. Point them to the right macro.
-m4_if([$1], [1.11.1], [],
+m4_if([$1], [1.11.2], [],
[AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
])
@@ -8083,19 +8641,43 @@
# Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
# This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
-[AM_AUTOMAKE_VERSION([1.11.1])dnl
+[AM_AUTOMAKE_VERSION([1.11.2])dnl
m4_ifndef([AC_AUTOCONF_VERSION],
[m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
_AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
-# AM_AUX_DIR_EXPAND -*- Autoconf -*-
+# Figure out how to run the assembler. -*- Autoconf -*-
-# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
+# serial 5
+
+# AM_PROG_AS
+# ----------
+AC_DEFUN([AM_PROG_AS],
+[# By default we simply use the C compiler to build assembly code.
+AC_REQUIRE([AC_PROG_CC])
+test "${CCAS+set}" = set || CCAS=$CC
+test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
+AC_ARG_VAR([CCAS], [assembler compiler command (defaults to CC)])
+AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)])
+_AM_IF_OPTION([no-dependencies],, [_AM_DEPENDENCIES([CCAS])])dnl
+])
+
+# AM_AUX_DIR_EXPAND -*- Autoconf -*-
+
+# Copyright (C) 2001, 2003, 2005, 2011 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 1
+
# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
# $ac_aux_dir to `$srcdir/foo'. In other projects, it is set to
# `$srcdir', `$srcdir/..', or `$srcdir/../..'.
@@ -8177,14 +8759,14 @@
Usually this means the macro was only invoked conditionally.]])
fi])])
-# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009
-# Free Software Foundation, Inc.
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009,
+# 2010, 2011 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
-# serial 10
+# serial 12
# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
# written in clear, in which case automake, when reading aclocal.m4,
@@ -8224,6 +8806,7 @@
# instance it was reported that on HP-UX the gcc test will end up
# making a dummy file named `D' -- because `-MD' means `put the output
# in D'.
+ rm -rf conftest.dir
mkdir conftest.dir
# Copy depcomp to subdir because otherwise we won't find it if we're
# using a relative directory.
@@ -8288,7 +8871,7 @@
break
fi
;;
- msvisualcpp | msvcmsys)
+ msvc7 | msvc7msys | msvisualcpp | msvcmsys)
# This compiler won't grok `-c -o', but also, the minuso test has
# not run yet. These depmodes are late enough in the game, and
# so weak that their functioning should not be impacted.
@@ -8353,10 +8936,13 @@
if test "x$enable_dependency_tracking" != xno; then
am_depcomp="$ac_aux_dir/depcomp"
AMDEPBACKSLASH='\'
+ am__nodep='_no'
fi
AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
AC_SUBST([AMDEPBACKSLASH])dnl
_AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
+AC_SUBST([am__nodep])dnl
+_AM_SUBST_NOTMAKE([am__nodep])dnl
])
# Generate code to set up dependency tracking. -*- Autoconf -*-
@@ -8590,12 +9176,15 @@
done
echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
-# Copyright (C) 2001, 2003, 2005, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2005, 2008, 2011 Free Software Foundation,
+# Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
+# serial 1
+
# AM_PROG_INSTALL_SH
# ------------------
# Define $install_sh.
@@ -8635,8 +9224,8 @@
# Add --enable-maintainer-mode option to configure. -*- Autoconf -*-
# From Jim Meyering
-# Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2008
-# Free Software Foundation, Inc.
+# Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2008,
+# 2011 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
@@ -8656,7 +9245,7 @@
[disable], [m4_define([am_maintainer_other], [enable])],
[m4_define([am_maintainer_other], [enable])
m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
-AC_MSG_CHECKING([whether to am_maintainer_other maintainer-specific portions of Makefiles])
+AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
dnl maintainer-mode's default is 'disable' unless 'enable' is passed
AC_ARG_ENABLE([maintainer-mode],
[ --][am_maintainer_other][-maintainer-mode am_maintainer_other make rules and dependencies not useful
@@ -8767,12 +9356,15 @@
fi
])
-# Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2004, 2005, 2006, 2011 Free Software Foundation,
+# Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
+# serial 1
+
# AM_PROG_MKDIR_P
# ---------------
# Check for `mkdir -p'.
@@ -8795,13 +9387,14 @@
# Helper functions for option handling. -*- Autoconf -*-
-# Copyright (C) 2001, 2002, 2003, 2005, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2002, 2003, 2005, 2008, 2010 Free Software
+# Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
-# serial 4
+# serial 5
# _AM_MANGLE_OPTION(NAME)
# -----------------------
@@ -8809,13 +9402,13 @@
[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
# _AM_SET_OPTION(NAME)
-# ------------------------------
+# --------------------
# Set option NAME. Presently that only means defining a flag for this option.
AC_DEFUN([_AM_SET_OPTION],
[m4_define(_AM_MANGLE_OPTION([$1]), 1)])
# _AM_SET_OPTIONS(OPTIONS)
-# ----------------------------------
+# ------------------------
# OPTIONS is a space-separated list of Automake options.
AC_DEFUN([_AM_SET_OPTIONS],
[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
@@ -8891,12 +9484,14 @@
fi
AC_MSG_RESULT(yes)])
-# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2005, 2011 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
+# serial 1
+
# AM_PROG_INSTALL_STRIP
# ---------------------
# One issue with vendor `install' (even GNU) is that you can't
@@ -8919,13 +9514,13 @@
INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
AC_SUBST([INSTALL_STRIP_PROGRAM])])
-# Copyright (C) 2006, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2008, 2010 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
-# serial 2
+# serial 3
# _AM_SUBST_NOTMAKE(VARIABLE)
# ---------------------------
@@ -8934,7 +9529,7 @@
AC_DEFUN([_AM_SUBST_NOTMAKE])
# AM_SUBST_NOTMAKE(VARIABLE)
-# ---------------------------
+# --------------------------
# Public sister of _AM_SUBST_NOTMAKE.
AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
diff --git a/arm/filter_neon.S b/arm/filter_neon.S
new file mode 100644
index 0000000..63a5d8c
--- /dev/null
+++ b/arm/filter_neon.S
@@ -0,0 +1,225 @@
+
+/* filter_neon.S - NEON optimised filter functions
+ *
+ * Copyright (c) 2011 Glenn Randers-Pehrson
+ * Written by Mans Rullgard, 2011.
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits /* mark stack as non-executable */
+#endif
+
+#ifdef __ELF__
+# define ELF
+#else
+# define ELF @
+#endif
+
+ .arch armv7-a
+ .fpu neon
+
+.macro func name, export=0
+ .macro endfunc
+ELF .size \name, . - \name
+ .endfunc
+ .purgem endfunc
+ .endm
+ .text
+ .if \export
+ .global \name
+ .endif
+ELF .type \name, STT_FUNC
+ .func \name
+\name:
+.endm
+
+func png_read_filter_row_sub4_neon, export=1
+ ldr r3, [r0, #4] @ rowbytes
+ vmov.i8 d3, #0
+1:
+ vld4.32 {d4[],d5[],d6[],d7[]}, [r1,:128]
+ vadd.u8 d0, d3, d4
+ vadd.u8 d1, d0, d5
+ vadd.u8 d2, d1, d6
+ vadd.u8 d3, d2, d7
+ vst4.32 {d0[0],d1[0],d2[0],d3[0]},[r1,:128]!
+ subs r3, r3, #16
+ bgt 1b
+
+ bx lr
+endfunc
+
+func png_read_filter_row_sub3_neon, export=1
+ ldr r3, [r0, #4] @ rowbytes
+ vmov.i8 d3, #0
+ mov r0, r1
+ mov r2, #3
+ mov r12, #12
+ vld1.8 {q11}, [r0], r12
+1:
+ vext.8 d5, d22, d23, #3
+ vadd.u8 d0, d3, d22
+ vext.8 d6, d22, d23, #6
+ vadd.u8 d1, d0, d5
+ vext.8 d7, d23, d23, #1
+ vld1.8 {q11}, [r0], r12
+ vst1.32 {d0[0]}, [r1,:32], r2
+ vadd.u8 d2, d1, d6
+ vst1.32 {d1[0]}, [r1], r2
+ vadd.u8 d3, d2, d7
+ vst1.32 {d2[0]}, [r1], r2
+ vst1.32 {d3[0]}, [r1], r2
+ subs r3, r3, #12
+ bgt 1b
+
+ bx lr
+endfunc
+
+func png_read_filter_row_up_neon, export=1
+ ldr r3, [r0, #4] @ rowbytes
+1:
+ vld1.8 {q0}, [r1,:128]
+ vld1.8 {q1}, [r2,:128]!
+ vadd.u8 q0, q0, q1
+ vst1.8 {q0}, [r1,:128]!
+ subs r3, r3, #16
+ bgt 1b
+
+ bx lr
+endfunc
+
+func png_read_filter_row_avg4_neon, export=1
+ ldr r12, [r0, #4] @ rowbytes
+ vmov.i8 d3, #0
+1:
+ vld4.32 {d4[],d5[],d6[],d7[]}, [r1,:128]
+ vld4.32 {d16[],d17[],d18[],d19[]},[r2,:128]!
+ vhadd.u8 d0, d3, d16
+ vadd.u8 d0, d0, d4
+ vhadd.u8 d1, d0, d17
+ vadd.u8 d1, d1, d5
+ vhadd.u8 d2, d1, d18
+ vadd.u8 d2, d2, d6
+ vhadd.u8 d3, d2, d19
+ vadd.u8 d3, d3, d7
+ vst4.32 {d0[0],d1[0],d2[0],d3[0]},[r1,:128]!
+ subs r12, r12, #16
+ bgt 1b
+
+ bx lr
+endfunc
+
+func png_read_filter_row_avg3_neon, export=1
+ push {r4,lr}
+ ldr r12, [r0, #4] @ rowbytes
+ vmov.i8 d3, #0
+ mov r0, r1
+ mov r4, #3
+ mov lr, #12
+ vld1.8 {q11}, [r0], lr
+1:
+ vld1.8 {q10}, [r2], lr
+ vext.8 d5, d22, d23, #3
+ vhadd.u8 d0, d3, d20
+ vext.8 d17, d20, d21, #3
+ vadd.u8 d0, d0, d22
+ vext.8 d6, d22, d23, #6
+ vhadd.u8 d1, d0, d17
+ vext.8 d18, d20, d21, #6
+ vadd.u8 d1, d1, d5
+ vext.8 d7, d23, d23, #1
+ vld1.8 {q11}, [r0], lr
+ vst1.32 {d0[0]}, [r1,:32], r4
+ vhadd.u8 d2, d1, d18
+ vst1.32 {d1[0]}, [r1], r4
+ vext.8 d19, d21, d21, #1
+ vadd.u8 d2, d2, d6
+ vhadd.u8 d3, d2, d19
+ vst1.32 {d2[0]}, [r1], r4
+ vadd.u8 d3, d3, d7
+ vst1.32 {d3[0]}, [r1], r4
+ subs r12, r12, #12
+ bgt 1b
+
+ pop {r4,pc}
+endfunc
+
+.macro paeth rx, ra, rb, rc
+ vaddl.u8 q12, \ra, \rb @ a + b
+ vaddl.u8 q15, \rc, \rc @ 2*c
+ vabdl.u8 q13, \rb, \rc @ pa
+ vabdl.u8 q14, \ra, \rc @ pb
+ vabd.u16 q15, q12, q15 @ pc
+ vcle.u16 q12, q13, q14 @ pa <= pb
+ vcle.u16 q13, q13, q15 @ pa <= pc
+ vcle.u16 q14, q14, q15 @ pb <= pc
+ vand q12, q12, q13 @ pa <= pb && pa <= pc
+ vmovn.u16 d28, q14
+ vmovn.u16 \rx, q12
+ vbsl d28, \rb, \rc
+ vbsl \rx, \ra, d28
+.endm
+
+func png_read_filter_row_paeth4_neon, export=1
+ ldr r12, [r0, #4] @ rowbytes
+ vmov.i8 d3, #0
+ vmov.i8 d20, #0
+1:
+ vld4.32 {d4[],d5[],d6[],d7[]}, [r1,:128]
+ vld4.32 {d16[],d17[],d18[],d19[]},[r2,:128]!
+ paeth d0, d3, d16, d20
+ vadd.u8 d0, d0, d4
+ paeth d1, d0, d17, d16
+ vadd.u8 d1, d1, d5
+ paeth d2, d1, d18, d17
+ vadd.u8 d2, d2, d6
+ paeth d3, d2, d19, d18
+ vmov d20, d19
+ vadd.u8 d3, d3, d7
+ vst4.32 {d0[0],d1[0],d2[0],d3[0]},[r1,:128]!
+ subs r12, r12, #16
+ bgt 1b
+
+ bx lr
+endfunc
+
+func png_read_filter_row_paeth3_neon, export=1
+ push {r4,lr}
+ ldr r12, [r0, #4] @ rowbytes
+ vmov.i8 d3, #0
+ vmov.i8 d4, #0
+ mov r0, r1
+ mov r4, #3
+ mov lr, #12
+ vld1.8 {q11}, [r0], lr
+1:
+ vld1.8 {q10}, [r2], lr
+ paeth d0, d3, d20, d4
+ vext.8 d5, d22, d23, #3
+ vadd.u8 d0, d0, d22
+ vext.8 d17, d20, d21, #3
+ paeth d1, d0, d17, d20
+ vst1.32 {d0[0]}, [r1,:32], r4
+ vext.8 d6, d22, d23, #6
+ vadd.u8 d1, d1, d5
+ vext.8 d18, d20, d21, #6
+ paeth d2, d1, d18, d17
+ vext.8 d7, d23, d23, #1
+ vld1.8 {q11}, [r0], lr
+ vst1.32 {d1[0]}, [r1], r4
+ vadd.u8 d2, d2, d6
+ vext.8 d19, d21, d21, #1
+ paeth d3, d2, d19, d18
+ vst1.32 {d2[0]}, [r1], r4
+ vmov d4, d19
+ vadd.u8 d3, d3, d7
+ vst1.32 {d3[0]}, [r1], r4
+ subs r12, r12, #12
+ bgt 1b
+
+ pop {r4,pc}
+endfunc
diff --git a/config.guess b/config.guess
old mode 100755
new mode 100644
index dc84c68..8152efd
--- a/config.guess
+++ b/config.guess
@@ -1,10 +1,10 @@
#! /bin/sh
# Attempt to guess a canonical system name.
# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-# Free Software Foundation, Inc.
+# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+# 2011 Free Software Foundation, Inc.
-timestamp='2009-11-20'
+timestamp='2011-11-11'
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
@@ -56,8 +56,9 @@
GNU config.guess ($timestamp)
Originally written by Per Bothner.
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free
+Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -180,7 +181,7 @@
fi
;;
*)
- os=netbsd
+ os=netbsd
;;
esac
# The OS release
@@ -223,7 +224,7 @@
UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
;;
*5.*)
- UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+ UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
;;
esac
# According to Compaq, /usr/sbin/psrinfo has been available on
@@ -269,7 +270,10 @@
# A Xn.n version is an unreleased experimental baselevel.
# 1.2 uses "1.2" for uname -r.
echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
- exit ;;
+ # Reset EXIT trap before exiting to avoid spurious non-zero exit code.
+ exitcode=$?
+ trap '' 0
+ exit $exitcode ;;
Alpha\ *:Windows_NT*:*)
# How do we know it's Interix rather than the generic POSIX subsystem?
# Should we change UNAME_MACHINE based on the output of uname instead
@@ -295,7 +299,7 @@
echo s390-ibm-zvmoe
exit ;;
*:OS400:*:*)
- echo powerpc-ibm-os400
+ echo powerpc-ibm-os400
exit ;;
arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
echo arm-acorn-riscix${UNAME_RELEASE}
@@ -394,23 +398,23 @@
# MiNT. But MiNT is downward compatible to TOS, so this should
# be no problem.
atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
- echo m68k-atari-mint${UNAME_RELEASE}
+ echo m68k-atari-mint${UNAME_RELEASE}
exit ;;
atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
echo m68k-atari-mint${UNAME_RELEASE}
- exit ;;
+ exit ;;
*falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
- echo m68k-atari-mint${UNAME_RELEASE}
+ echo m68k-atari-mint${UNAME_RELEASE}
exit ;;
milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
- echo m68k-milan-mint${UNAME_RELEASE}
- exit ;;
+ echo m68k-milan-mint${UNAME_RELEASE}
+ exit ;;
hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
- echo m68k-hades-mint${UNAME_RELEASE}
- exit ;;
+ echo m68k-hades-mint${UNAME_RELEASE}
+ exit ;;
*:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
- echo m68k-unknown-mint${UNAME_RELEASE}
- exit ;;
+ echo m68k-unknown-mint${UNAME_RELEASE}
+ exit ;;
m68k:machten:*:*)
echo m68k-apple-machten${UNAME_RELEASE}
exit ;;
@@ -480,8 +484,8 @@
echo m88k-motorola-sysv3
exit ;;
AViiON:dgux:*:*)
- # DG/UX returns AViiON for all architectures
- UNAME_PROCESSOR=`/usr/bin/uname -p`
+ # DG/UX returns AViiON for all architectures
+ UNAME_PROCESSOR=`/usr/bin/uname -p`
if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
then
if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
@@ -494,7 +498,7 @@
else
echo i586-dg-dgux${UNAME_RELEASE}
fi
- exit ;;
+ exit ;;
M88*:DolphinOS:*:*) # DolphinOS (SVR3)
echo m88k-dolphin-sysv3
exit ;;
@@ -551,7 +555,7 @@
echo rs6000-ibm-aix3.2
fi
exit ;;
- *:AIX:*:[456])
+ *:AIX:*:[4567])
IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
IBM_ARCH=rs6000
@@ -594,52 +598,52 @@
9000/[678][0-9][0-9])
if [ -x /usr/bin/getconf ]; then
sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
- sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
- case "${sc_cpu_version}" in
- 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
- 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
- 532) # CPU_PA_RISC2_0
- case "${sc_kernel_bits}" in
- 32) HP_ARCH="hppa2.0n" ;;
- 64) HP_ARCH="hppa2.0w" ;;
+ sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+ case "${sc_cpu_version}" in
+ 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
+ 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
+ 532) # CPU_PA_RISC2_0
+ case "${sc_kernel_bits}" in
+ 32) HP_ARCH="hppa2.0n" ;;
+ 64) HP_ARCH="hppa2.0w" ;;
'') HP_ARCH="hppa2.0" ;; # HP-UX 10.20
- esac ;;
- esac
+ esac ;;
+ esac
fi
if [ "${HP_ARCH}" = "" ]; then
eval $set_cc_for_build
- sed 's/^ //' << EOF >$dummy.c
+ sed 's/^ //' << EOF >$dummy.c
- #define _HPUX_SOURCE
- #include <stdlib.h>
- #include <unistd.h>
+ #define _HPUX_SOURCE
+ #include <stdlib.h>
+ #include <unistd.h>
- int main ()
- {
- #if defined(_SC_KERNEL_BITS)
- long bits = sysconf(_SC_KERNEL_BITS);
- #endif
- long cpu = sysconf (_SC_CPU_VERSION);
+ int main ()
+ {
+ #if defined(_SC_KERNEL_BITS)
+ long bits = sysconf(_SC_KERNEL_BITS);
+ #endif
+ long cpu = sysconf (_SC_CPU_VERSION);
- switch (cpu)
- {
- case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
- case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
- case CPU_PA_RISC2_0:
- #if defined(_SC_KERNEL_BITS)
- switch (bits)
- {
- case 64: puts ("hppa2.0w"); break;
- case 32: puts ("hppa2.0n"); break;
- default: puts ("hppa2.0"); break;
- } break;
- #else /* !defined(_SC_KERNEL_BITS) */
- puts ("hppa2.0"); break;
- #endif
- default: puts ("hppa1.0"); break;
- }
- exit (0);
- }
+ switch (cpu)
+ {
+ case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+ case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+ case CPU_PA_RISC2_0:
+ #if defined(_SC_KERNEL_BITS)
+ switch (bits)
+ {
+ case 64: puts ("hppa2.0w"); break;
+ case 32: puts ("hppa2.0n"); break;
+ default: puts ("hppa2.0"); break;
+ } break;
+ #else /* !defined(_SC_KERNEL_BITS) */
+ puts ("hppa2.0"); break;
+ #endif
+ default: puts ("hppa1.0"); break;
+ }
+ exit (0);
+ }
EOF
(CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
test -z "$HP_ARCH" && HP_ARCH=hppa
@@ -730,22 +734,22 @@
exit ;;
C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
echo c1-convex-bsd
- exit ;;
+ exit ;;
C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
if getsysinfo -f scalar_acc
then echo c32-convex-bsd
else echo c2-convex-bsd
fi
- exit ;;
+ exit ;;
C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
echo c34-convex-bsd
- exit ;;
+ exit ;;
C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
echo c38-convex-bsd
- exit ;;
+ exit ;;
C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
echo c4-convex-bsd
- exit ;;
+ exit ;;
CRAY*Y-MP:*:*:*)
echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
exit ;;
@@ -769,14 +773,14 @@
exit ;;
F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
- FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
- FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
- echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
- exit ;;
+ FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+ FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+ echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+ exit ;;
5000:UNIX_System_V:4.*:*)
- FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
- FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
- echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+ FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+ FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
+ echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
exit ;;
i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
@@ -788,13 +792,12 @@
echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
exit ;;
*:FreeBSD:*:*)
- case ${UNAME_MACHINE} in
- pc98)
- echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+ UNAME_PROCESSOR=`/usr/bin/uname -p`
+ case ${UNAME_PROCESSOR} in
amd64)
echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
*)
- echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+ echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
esac
exit ;;
i*:CYGWIN*:*)
@@ -803,15 +806,18 @@
*:MINGW*:*)
echo ${UNAME_MACHINE}-pc-mingw32
exit ;;
+ i*:MSYS*:*)
+ echo ${UNAME_MACHINE}-pc-msys
+ exit ;;
i*:windows32*:*)
- # uname -m includes "-pc" on this system.
- echo ${UNAME_MACHINE}-mingw32
+ # uname -m includes "-pc" on this system.
+ echo ${UNAME_MACHINE}-mingw32
exit ;;
i*:PW*:*)
echo ${UNAME_MACHINE}-pc-pw32
exit ;;
*:Interix*:*)
- case ${UNAME_MACHINE} in
+ case ${UNAME_MACHINE} in
x86)
echo i586-pc-interix${UNAME_RELEASE}
exit ;;
@@ -866,7 +872,7 @@
EV6) UNAME_MACHINE=alphaev6 ;;
EV67) UNAME_MACHINE=alphaev67 ;;
EV68*) UNAME_MACHINE=alphaev68 ;;
- esac
+ esac
objdump --private-headers /bin/sh | grep -q ld.so.1
if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
@@ -878,7 +884,13 @@
then
echo ${UNAME_MACHINE}-unknown-linux-gnu
else
- echo ${UNAME_MACHINE}-unknown-linux-gnueabi
+ if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+ | grep -q __ARM_PCS_VFP
+ then
+ echo ${UNAME_MACHINE}-unknown-linux-gnueabi
+ else
+ echo ${UNAME_MACHINE}-unknown-linux-gnueabihf
+ fi
fi
exit ;;
avr32*:Linux:*:*)
@@ -891,7 +903,10 @@
echo crisv32-axis-linux-gnu
exit ;;
frv:Linux:*:*)
- echo frv-unknown-linux-gnu
+ echo frv-unknown-linux-gnu
+ exit ;;
+ hexagon:Linux:*:*)
+ echo hexagon-unknown-linux-gnu
exit ;;
i*86:Linux:*:*)
LIBC=gnu
@@ -959,7 +974,7 @@
echo ${UNAME_MACHINE}-ibm-linux
exit ;;
sh64*:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
exit ;;
sh*:Linux:*:*)
echo ${UNAME_MACHINE}-unknown-linux-gnu
@@ -967,6 +982,9 @@
sparc:Linux:*:* | sparc64:Linux:*:*)
echo ${UNAME_MACHINE}-unknown-linux-gnu
exit ;;
+ tile*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
vax:Linux:*:*)
echo ${UNAME_MACHINE}-dec-linux-gnu
exit ;;
@@ -974,7 +992,7 @@
echo x86_64-unknown-linux-gnu
exit ;;
xtensa*:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
exit ;;
i*86:DYNIX/ptx:4*:*)
# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
@@ -983,11 +1001,11 @@
echo i386-sequent-sysv4
exit ;;
i*86:UNIX_SV:4.2MP:2.*)
- # Unixware is an offshoot of SVR4, but it has its own version
- # number series starting with 2...
- # I am not positive that other SVR4 systems won't match this,
+ # Unixware is an offshoot of SVR4, but it has its own version
+ # number series starting with 2...
+ # I am not positive that other SVR4 systems won't match this,
# I just have to hope. -- rms.
- # Use sysv4.2uw... so that sysv4* matches it.
+ # Use sysv4.2uw... so that sysv4* matches it.
echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
exit ;;
i*86:OS/2:*:*)
@@ -1019,7 +1037,7 @@
fi
exit ;;
i*86:*:5:[678]*)
- # UnixWare 7.x, OpenUNIX and OpenServer 6.
+ # UnixWare 7.x, OpenUNIX and OpenServer 6.
case `/bin/uname -X | grep "^Machine"` in
*486*) UNAME_MACHINE=i486 ;;
*Pentium) UNAME_MACHINE=i586 ;;
@@ -1047,13 +1065,13 @@
exit ;;
pc:*:*:*)
# Left here for compatibility:
- # uname -m prints for DJGPP always 'pc', but it prints nothing about
- # the processor, so we play safe by assuming i586.
+ # uname -m prints for DJGPP always 'pc', but it prints nothing about
+ # the processor, so we play safe by assuming i586.
# Note: whatever this is, it MUST be the same as what config.sub
# prints for the "djgpp" host, or else GDB configury will decide that
# this is a cross-build.
echo i586-pc-msdosdjgpp
- exit ;;
+ exit ;;
Intel:Mach:3*:*)
echo i386-pc-mach3
exit ;;
@@ -1088,8 +1106,8 @@
/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
&& { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
- /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
- && { echo i486-ncr-sysv4; exit; } ;;
+ /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+ && { echo i486-ncr-sysv4; exit; } ;;
NCR*:*:4.2:* | MPRAS*:*:4.2:*)
OS_REL='.3'
test -r /etc/.relid \
@@ -1132,10 +1150,10 @@
echo ns32k-sni-sysv
fi
exit ;;
- PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
- # says <Richard.M.Bartel@ccMail.Census.GOV>
- echo i586-unisys-sysv4
- exit ;;
+ PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+ # says <Richard.M.Bartel@ccMail.Census.GOV>
+ echo i586-unisys-sysv4
+ exit ;;
*:UNIX_System_V:4*:FTX*)
# From Gerald Hewes <hewes@openmarket.com>.
# How about differentiating between stratus architectures? -djm
@@ -1161,11 +1179,11 @@
exit ;;
R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
if [ -d /usr/nec ]; then
- echo mips-nec-sysv${UNAME_RELEASE}
+ echo mips-nec-sysv${UNAME_RELEASE}
else
- echo mips-unknown-sysv${UNAME_RELEASE}
+ echo mips-unknown-sysv${UNAME_RELEASE}
fi
- exit ;;
+ exit ;;
BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only.
echo powerpc-be-beos
exit ;;
@@ -1230,6 +1248,9 @@
*:QNX:*:4*)
echo i386-pc-qnx
exit ;;
+ NEO-?:NONSTOP_KERNEL:*:*)
+ echo neo-tandem-nsk${UNAME_RELEASE}
+ exit ;;
NSE-?:NONSTOP_KERNEL:*:*)
echo nse-tandem-nsk${UNAME_RELEASE}
exit ;;
@@ -1275,13 +1296,13 @@
echo pdp10-unknown-its
exit ;;
SEI:*:*:SEIUX)
- echo mips-sei-seiux${UNAME_RELEASE}
+ echo mips-sei-seiux${UNAME_RELEASE}
exit ;;
*:DragonFly:*:*)
echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
exit ;;
*:*VMS:*:*)
- UNAME_MACHINE=`(uname -p) 2>/dev/null`
+ UNAME_MACHINE=`(uname -p) 2>/dev/null`
case "${UNAME_MACHINE}" in
A*) echo alpha-dec-vms ; exit ;;
I*) echo ia64-dec-vms ; exit ;;
@@ -1321,11 +1342,11 @@
#include <sys/param.h>
printf ("m68k-sony-newsos%s\n",
#ifdef NEWSOS4
- "4"
+ "4"
#else
- ""
+ ""
#endif
- ); exit (0);
+ ); exit (0);
#endif
#endif
diff --git a/config.h.in b/config.h.in
index fb23495..d154742 100644
--- a/config.h.in
+++ b/config.h.in
@@ -3,6 +3,9 @@
/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H
+/* Define to 1 if you have the `feenableexcept' function. */
+#undef HAVE_FEENABLEEXCEPT
+
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
@@ -70,6 +73,12 @@
/* Define to the version of this package. */
#undef PACKAGE_VERSION
+/* Align row buffers */
+#undef PNG_ALIGNED_MEMORY_SUPPORTED
+
+/* Enable ARM NEON optimizations */
+#undef PNG_ARM_NEON
+
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
@@ -82,5 +91,19 @@
/* Define to empty if `const' does not conform to ANSI C. */
#undef const
+/* Define to the equivalent of the C99 'restrict' keyword, or to
+ nothing if this is not supported. Do not define if restrict is
+ supported directly. */
+#undef restrict
+/* Work around a bug in Sun C++: it does not support _Restrict or
+ __restrict__, even though the corresponding Sun C compiler ends up with
+ "#define restrict _Restrict" or "#define restrict __restrict__" in the
+ previous line. Perhaps some future version of Sun C++ will work with
+ restrict; if so, hopefully it defines __RESTRICT like Sun C does. */
+#if defined __SUNPRO_CC && !defined __RESTRICT
+# define _Restrict
+# define __restrict__
+#endif
+
/* Define to `unsigned int' if <sys/types.h> does not define. */
#undef size_t
diff --git a/config.sub b/config.sub
old mode 100755
new mode 100644
index 2a55a50..e76eaf4
--- a/config.sub
+++ b/config.sub
@@ -1,10 +1,10 @@
#! /bin/sh
# Configuration validation subroutine script.
# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-# Free Software Foundation, Inc.
+# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+# 2011 Free Software Foundation, Inc.
-timestamp='2009-11-20'
+timestamp='2011-11-11'
# This file is (in principle) common to ALL GNU software.
# The presence of a machine in this file suggests that SOME GNU software
@@ -75,8 +75,9 @@
version="\
GNU config.sub ($timestamp)
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free
+Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -123,8 +124,9 @@
# Here we must recognize all the valid KERNEL-OS combinations.
maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
case $maybe_os in
- nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
- uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
+ nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
+ linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+ knetbsd*-gnu* | netbsd*-gnu* | \
kopensolaris*-gnu* | \
storm-chaos* | os2-emx* | rtmk-nova*)
os=-$maybe_os
@@ -156,8 +158,8 @@
os=
basic_machine=$1
;;
- -bluegene*)
- os=-cnk
+ -bluegene*)
+ os=-cnk
;;
-sim | -cisco | -oki | -wec | -winbond)
os=
@@ -173,10 +175,10 @@
os=-chorusos
basic_machine=$1
;;
- -chorusrdb)
- os=-chorusrdb
+ -chorusrdb)
+ os=-chorusrdb
basic_machine=$1
- ;;
+ ;;
-hiux*)
os=-hiuxwe2
;;
@@ -249,13 +251,17 @@
| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
| am33_2.0 \
| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
+ | be32 | be64 \
| bfin \
| c4x | clipper \
| d10v | d30v | dlx | dsp16xx \
+ | epiphany \
| fido | fr30 | frv \
| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+ | hexagon \
| i370 | i860 | i960 | ia64 \
| ip2k | iq2000 \
+ | le32 | le64 \
| lm32 \
| m32c | m32r | m32rle | m68000 | m68k | m88k \
| maxq | mb | microblaze | mcore | mep | metag \
@@ -281,27 +287,38 @@
| moxie \
| mt \
| msp430 \
+ | nds32 | nds32le | nds32be \
| nios | nios2 \
| ns16k | ns32k \
+ | open8 \
| or32 \
| pdp10 | pdp11 | pj | pjl \
- | powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
+ | powerpc | powerpc64 | powerpc64le | powerpcle \
| pyramid \
- | rx \
+ | rl78 | rx \
| score \
| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
| sh64 | sh64le \
| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
- | spu | strongarm \
- | tahoe | thumb | tic4x | tic80 | tron \
+ | spu \
+ | tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
| ubicom32 \
- | v850 | v850e \
+ | v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
| we32k \
- | x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \
+ | x86 | xc16x | xstormy16 | xtensa \
| z8k | z80)
basic_machine=$basic_machine-unknown
;;
+ c54x)
+ basic_machine=tic54x-unknown
+ ;;
+ c55x)
+ basic_machine=tic55x-unknown
+ ;;
+ c6x)
+ basic_machine=tic6x-unknown
+ ;;
m6811 | m68hc11 | m6812 | m68hc12 | picochip)
# Motorola 68HC11/12.
basic_machine=$basic_machine-unknown
@@ -313,6 +330,18 @@
basic_machine=mt-unknown
;;
+ strongarm | thumb | xscale)
+ basic_machine=arm-unknown
+ ;;
+
+ xscaleeb)
+ basic_machine=armeb-unknown
+ ;;
+
+ xscaleel)
+ basic_machine=armel-unknown
+ ;;
+
# We use `pc' rather than `unknown'
# because (1) that's what they normally are, and
# (2) the word "unknown" tends to confuse beginning users.
@@ -332,16 +361,19 @@
| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
| arm-* | armbe-* | armle-* | armeb-* | armv*-* \
| avr-* | avr32-* \
+ | be32-* | be64-* \
| bfin-* | bs2000-* \
- | c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
+ | c[123]* | c30-* | [cjt]90-* | c4x-* \
| clipper-* | craynv-* | cydra-* \
| d10v-* | d30v-* | dlx-* \
| elxsi-* \
| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
| h8300-* | h8500-* \
| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+ | hexagon-* \
| i*86-* | i860-* | i960-* | ia64-* \
| ip2k-* | iq2000-* \
+ | le32-* | le64-* \
| lm32-* \
| m32c-* | m32r-* | m32rle-* \
| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
@@ -367,25 +399,29 @@
| mmix-* \
| mt-* \
| msp430-* \
+ | nds32-* | nds32le-* | nds32be-* \
| nios-* | nios2-* \
| none-* | np1-* | ns16k-* | ns32k-* \
+ | open8-* \
| orion-* \
| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
- | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
+ | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
| pyramid-* \
- | romp-* | rs6000-* | rx-* \
+ | rl78-* | romp-* | rs6000-* | rx-* \
| sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
| sparclite-* \
- | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | strongarm-* | sv1-* | sx?-* \
- | tahoe-* | thumb-* \
- | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* | tile-* \
+ | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx?-* \
+ | tahoe-* \
+ | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
+ | tile*-* \
| tron-* \
| ubicom32-* \
- | v850-* | v850e-* | vax-* \
+ | v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \
+ | vax-* \
| we32k-* \
- | x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \
+ | x86-* | x86_64-* | xc16x-* | xps100-* \
| xstormy16-* | xtensa*-* \
| ymp-* \
| z8k-* | z80-*)
@@ -410,7 +446,7 @@
basic_machine=a29k-amd
os=-udi
;;
- abacus)
+ abacus)
basic_machine=abacus-unknown
;;
adobe68k)
@@ -480,11 +516,20 @@
basic_machine=powerpc-ibm
os=-cnk
;;
+ c54x-*)
+ basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ c55x-*)
+ basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ c6x-*)
+ basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
c90)
basic_machine=c90-cray
os=-unicos
;;
- cegcc)
+ cegcc)
basic_machine=arm-unknown
os=-cegcc
;;
@@ -516,7 +561,7 @@
basic_machine=craynv-cray
os=-unicosmp
;;
- cr16)
+ cr16 | cr16-*)
basic_machine=cr16-unknown
os=-elf
;;
@@ -732,7 +777,7 @@
basic_machine=ns32k-utek
os=-sysv
;;
- microblaze)
+ microblaze)
basic_machine=microblaze-xilinx
;;
mingw32)
@@ -771,10 +816,18 @@
ms1-*)
basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
;;
+ msys)
+ basic_machine=i386-pc
+ os=-msys
+ ;;
mvs)
basic_machine=i370-ibm
os=-mvs
;;
+ nacl)
+ basic_machine=le32-unknown
+ os=-nacl
+ ;;
ncr3000)
basic_machine=i486-ncr
os=-sysv4
@@ -839,6 +892,12 @@
np1)
basic_machine=np1-gould
;;
+ neo-tandem)
+ basic_machine=neo-tandem
+ ;;
+ nse-tandem)
+ basic_machine=nse-tandem
+ ;;
nsr-tandem)
basic_machine=nsr-tandem
;;
@@ -921,9 +980,10 @@
;;
power) basic_machine=power-ibm
;;
- ppc) basic_machine=powerpc-unknown
+ ppc | ppcbe) basic_machine=powerpc-unknown
;;
- ppc-*) basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ppc-* | ppcbe-*)
+ basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
;;
ppcle | powerpclittle | ppc-le | powerpc-little)
basic_machine=powerpcle-unknown
@@ -1017,6 +1077,9 @@
basic_machine=i860-stratus
os=-sysv4
;;
+ strongarm-* | thumb-*)
+ basic_machine=arm-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
sun2)
basic_machine=m68000-sun
;;
@@ -1073,20 +1136,8 @@
basic_machine=t90-cray
os=-unicos
;;
- tic54x | c54x*)
- basic_machine=tic54x-unknown
- os=-coff
- ;;
- tic55x | c55x*)
- basic_machine=tic55x-unknown
- os=-coff
- ;;
- tic6x | c6x*)
- basic_machine=tic6x-unknown
- os=-coff
- ;;
tile*)
- basic_machine=tile-unknown
+ basic_machine=$basic_machine-unknown
os=-linux-gnu
;;
tx39)
@@ -1156,6 +1207,9 @@
xps | xps100)
basic_machine=xps100-honeywell
;;
+ xscale-* | xscalee[bl]-*)
+ basic_machine=`echo $basic_machine | sed 's/^xscale/arm/'`
+ ;;
ymp)
basic_machine=ymp-cray
os=-unicos
@@ -1253,11 +1307,11 @@
if [ x"$os" != x"" ]
then
case $os in
- # First match some system type aliases
- # that might get confused with valid system types.
+ # First match some system type aliases
+ # that might get confused with valid system types.
# -solaris* is a basic system type, with this one exception.
- -auroraux)
- os=-auroraux
+ -auroraux)
+ os=-auroraux
;;
-solaris1 | -solaris1.*)
os=`echo $os | sed -e 's|solaris1|sunos4|'`
@@ -1293,8 +1347,9 @@
| -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
| -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
| -chorusos* | -chorusrdb* | -cegcc* \
- | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
- | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
+ | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+ | -mingw32* | -linux-gnu* | -linux-android* \
+ | -linux-newlib* | -linux-uclibc* \
| -uxpv* | -beos* | -mpeix* | -udk* \
| -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
| -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
@@ -1341,7 +1396,7 @@
-opened*)
os=-openedition
;;
- -os400*)
+ -os400*)
os=-os400
;;
-wince*)
@@ -1390,7 +1445,7 @@
-sinix*)
os=-sysv4
;;
- -tpf*)
+ -tpf*)
os=-tpf
;;
-triton*)
@@ -1435,6 +1490,8 @@
-dicos*)
os=-dicos
;;
+ -nacl*)
+ ;;
-none)
;;
*)
@@ -1457,10 +1514,10 @@
# system, and we'll never get to this point.
case $basic_machine in
- score-*)
+ score-*)
os=-elf
;;
- spu-*)
+ spu-*)
os=-elf
;;
*-acorn)
@@ -1472,8 +1529,17 @@
arm*-semi)
os=-aout
;;
- c4x-* | tic4x-*)
- os=-coff
+ c4x-* | tic4x-*)
+ os=-coff
+ ;;
+ tic54x-*)
+ os=-coff
+ ;;
+ tic55x-*)
+ os=-coff
+ ;;
+ tic6x-*)
+ os=-coff
;;
# This must come before the *-dec entry.
pdp10-*)
@@ -1500,7 +1566,7 @@
m68*-cisco)
os=-aout
;;
- mep-*)
+ mep-*)
os=-elf
;;
mips*-cisco)
@@ -1527,7 +1593,7 @@
*-ibm)
os=-aix
;;
- *-knuth)
+ *-knuth)
os=-mmixware
;;
*-wec)
diff --git a/configure b/configure
index 4d4d77c..a84b3ea 100755
--- a/configure
+++ b/configure
@@ -1,13 +1,13 @@
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.65 for libpng 1.4.9beta01.
+# Generated by GNU Autoconf 2.68 for libpng 1.5.10beta01.
#
# Report bugs to <png-mng-implement@lists.sourceforge.net>.
#
#
# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
-# Inc.
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
+# Foundation, Inc.
#
#
# This configure script is free software; the Free Software Foundation
@@ -91,6 +91,7 @@
IFS=" "" $as_nl"
# Find who we are. Look in the path if we contain no directory separator.
+as_myself=
case $0 in #((
*[\\/]* ) as_myself=$0 ;;
*) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -224,11 +225,18 @@
# We cannot yet assume a decent shell, so we have to provide a
# neutralization value for shells without unset; and this also
# works around shells that cannot unset nonexistent variables.
+ # Preserve -v and -x to the replacement shell.
BASH_ENV=/dev/null
ENV=/dev/null
(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
export CONFIG_SHELL
- exec "$CONFIG_SHELL" "$as_myself" ${1+"$@"}
+ case $- in # ((((
+ *v*x* | *x*v* ) as_opts=-vx ;;
+ *v* ) as_opts=-v ;;
+ *x* ) as_opts=-x ;;
+ * ) as_opts= ;;
+ esac
+ exec "$CONFIG_SHELL" $as_opts "$as_myself" ${1+"$@"}
fi
if test x$as_have_required = xno; then :
@@ -327,7 +335,7 @@
test -d "$as_dir" && break
done
test -z "$as_dirs" || eval "mkdir $as_dirs"
- } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+ } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
} # as_fn_mkdir_p
@@ -367,19 +375,19 @@
fi # as_fn_arith
-# as_fn_error ERROR [LINENO LOG_FD]
-# ---------------------------------
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
-# script with status $?, using 1 if that was 0.
+# script with STATUS, using 1 if that was 0.
as_fn_error ()
{
- as_status=$?; test $as_status -eq 0 && as_status=1
- if test "$3"; then
- as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
- $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+ as_status=$1; test $as_status -eq 0 && as_status=1
+ if test "$4"; then
+ as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
fi
- $as_echo "$as_me: error: $1" >&2
+ $as_echo "$as_me: error: $2" >&2
as_fn_exit $as_status
} # as_fn_error
@@ -543,7 +551,7 @@
exec 6>&1
# Name of the host.
-# hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+# hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
# so uname gets run too.
ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
@@ -562,8 +570,8 @@
# Identity of this package.
PACKAGE_NAME='libpng'
PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.4.9beta01'
-PACKAGE_STRING='libpng 1.4.9beta01'
+PACKAGE_VERSION='1.5.10beta01'
+PACKAGE_STRING='libpng 1.5.10beta01'
PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
PACKAGE_URL=''
@@ -607,6 +615,9 @@
ac_subst_vars='am__EXEEXT_FALSE
am__EXEEXT_TRUE
LTLIBOBJS
+PNG_ARM_NEON_FALSE
+PNG_ARM_NEON_TRUE
+AM_CCASFLAGS
binconfigs
pkgconfigdir
PNGLIB_RELEASE
@@ -616,15 +627,20 @@
SYMBOL_PREFIX
HAVE_LD_VERSION_SCRIPT_FALSE
HAVE_LD_VERSION_SCRIPT_TRUE
+HAVE_SOLARIS_LD_FALSE
+HAVE_SOLARIS_LD_TRUE
LIBPNG_DEFINES
LIBOBJS
POW_LIB
+DFNCPP
OTOOL64
OTOOL
LIPO
NMEDIT
DSYMUTIL
+MANIFEST_TOOL
RANLIB
+ac_ct_AR
AR
NM
ac_ct_DUMPBIN
@@ -648,9 +664,15 @@
build_vendor
build_cpu
build
+am__fastdepCCAS_FALSE
+am__fastdepCCAS_TRUE
+CCASDEPMODE
+CCASFLAGS
+CCAS
am__fastdepCC_FALSE
am__fastdepCC_TRUE
CCDEPMODE
+am__nodep
AMDEPBACKSLASH
AMDEP_FALSE
AMDEP_TRUE
@@ -738,9 +760,12 @@
enable_static
with_pic
enable_fast_install
+with_sysroot
enable_libtool_lock
+with_zlib_prefix
with_pkgconfigdir
with_binconfigs
+enable_arm_neon
'
ac_precious_vars='build_alias
host_alias
@@ -750,7 +775,10 @@
LDFLAGS
LIBS
CPPFLAGS
-CPP'
+CCAS
+CCASFLAGS
+CPP
+CPPFLAGS'
# Initialize some variables set by options.
@@ -813,8 +841,9 @@
fi
case $ac_option in
- *=*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
- *) ac_optarg=yes ;;
+ *=?*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+ *=) ac_optarg= ;;
+ *) ac_optarg=yes ;;
esac
# Accept the important Cygnus configure options, so we can diagnose typos.
@@ -859,7 +888,7 @@
ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
# Reject names that are not valid shell variable names.
expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
- as_fn_error "invalid feature name: $ac_useropt"
+ as_fn_error $? "invalid feature name: $ac_useropt"
ac_useropt_orig=$ac_useropt
ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
case $ac_user_opts in
@@ -885,7 +914,7 @@
ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
# Reject names that are not valid shell variable names.
expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
- as_fn_error "invalid feature name: $ac_useropt"
+ as_fn_error $? "invalid feature name: $ac_useropt"
ac_useropt_orig=$ac_useropt
ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
case $ac_user_opts in
@@ -1089,7 +1118,7 @@
ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
# Reject names that are not valid shell variable names.
expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
- as_fn_error "invalid package name: $ac_useropt"
+ as_fn_error $? "invalid package name: $ac_useropt"
ac_useropt_orig=$ac_useropt
ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
case $ac_user_opts in
@@ -1105,7 +1134,7 @@
ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
# Reject names that are not valid shell variable names.
expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
- as_fn_error "invalid package name: $ac_useropt"
+ as_fn_error $? "invalid package name: $ac_useropt"
ac_useropt_orig=$ac_useropt
ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
case $ac_user_opts in
@@ -1135,8 +1164,8 @@
| --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
x_libraries=$ac_optarg ;;
- -*) as_fn_error "unrecognized option: \`$ac_option'
-Try \`$0 --help' for more information."
+ -*) as_fn_error $? "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information"
;;
*=*)
@@ -1144,7 +1173,7 @@
# Reject names that are not valid shell variable names.
case $ac_envvar in #(
'' | [0-9]* | *[!_$as_cr_alnum]* )
- as_fn_error "invalid variable name: \`$ac_envvar'" ;;
+ as_fn_error $? "invalid variable name: \`$ac_envvar'" ;;
esac
eval $ac_envvar=\$ac_optarg
export $ac_envvar ;;
@@ -1154,7 +1183,7 @@
$as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
$as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
- : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
+ : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
;;
esac
@@ -1162,13 +1191,13 @@
if test -n "$ac_prev"; then
ac_option=--`echo $ac_prev | sed 's/_/-/g'`
- as_fn_error "missing argument to $ac_option"
+ as_fn_error $? "missing argument to $ac_option"
fi
if test -n "$ac_unrecognized_opts"; then
case $enable_option_checking in
no) ;;
- fatal) as_fn_error "unrecognized options: $ac_unrecognized_opts" ;;
+ fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
*) $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
esac
fi
@@ -1191,7 +1220,7 @@
[\\/$]* | ?:[\\/]* ) continue;;
NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
esac
- as_fn_error "expected an absolute directory name for --$ac_var: $ac_val"
+ as_fn_error $? "expected an absolute directory name for --$ac_var: $ac_val"
done
# There might be people who depend on the old broken behavior: `$host'
@@ -1205,8 +1234,8 @@
if test "x$host_alias" != x; then
if test "x$build_alias" = x; then
cross_compiling=maybe
- $as_echo "$as_me: WARNING: If you wanted to set the --build type, don't use --host.
- If a cross compiler is detected then cross compile mode will be used." >&2
+ $as_echo "$as_me: WARNING: if you wanted to set the --build type, don't use --host.
+ If a cross compiler is detected then cross compile mode will be used" >&2
elif test "x$build_alias" != "x$host_alias"; then
cross_compiling=yes
fi
@@ -1221,9 +1250,9 @@
ac_pwd=`pwd` && test -n "$ac_pwd" &&
ac_ls_di=`ls -di .` &&
ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
- as_fn_error "working directory cannot be determined"
+ as_fn_error $? "working directory cannot be determined"
test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
- as_fn_error "pwd does not report name of working directory"
+ as_fn_error $? "pwd does not report name of working directory"
# Find the source files, if location was not specified.
@@ -1262,11 +1291,11 @@
fi
if test ! -r "$srcdir/$ac_unique_file"; then
test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
- as_fn_error "cannot find sources ($ac_unique_file) in $srcdir"
+ as_fn_error $? "cannot find sources ($ac_unique_file) in $srcdir"
fi
ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
ac_abs_confdir=`(
- cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error "$ac_msg"
+ cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error $? "$ac_msg"
pwd)`
# When building in place, set srcdir=.
if test "$ac_abs_confdir" = "$ac_pwd"; then
@@ -1292,7 +1321,7 @@
# Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF
-\`configure' configures libpng 1.4.9beta01 to adapt to many kinds of systems.
+\`configure' configures libpng 1.5.10beta01 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
@@ -1306,7 +1335,7 @@
--help=short display options specific to this package
--help=recursive display the short help of all the included packages
-V, --version display version information and exit
- -q, --quiet, --silent do not print \`checking...' messages
+ -q, --quiet, --silent do not print \`checking ...' messages
--cache-file=FILE cache test results in FILE [disabled]
-C, --config-cache alias for \`--cache-file=config.cache'
-n, --no-create do not create output files
@@ -1362,7 +1391,7 @@
if test -n "$ac_init_help"; then
case $ac_init_help in
- short | recursive ) echo "Configuration of libpng 1.4.9beta01:";;
+ short | recursive ) echo "Configuration of libpng 1.5.10beta01:";;
esac
cat <<\_ACEOF
@@ -1379,13 +1408,17 @@
--enable-fast-install[=PKGS]
optimize for fast installation [default=yes]
--disable-libtool-lock avoid locking (might break parallel builds)
+ --enable-arm-neon Enable ARM NEON optimizations
Optional Packages:
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
--without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no)
--with-gnu-ld assume the C compiler uses GNU ld [default=no]
- --with-pic try to use only PIC/non-PIC objects [default=use
+ --with-pic[=PKGS] try to use only PIC/non-PIC objects [default=use
both]
+ --with-sysroot=DIR Search for dependent libraries within DIR
+ (or the compiler's sysroot if not specified).
+ --with-zlib-prefix prefix that may have been used in installed zlib
--with-pkgconfigdir Use the specified pkgconfig dir (default is
libdir/pkgconfig)
--with-binconfigs Generate shell libpng-config scripts as well as
@@ -1399,6 +1432,8 @@
LIBS libraries to pass to the linker, e.g. -l<library>
CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
you have headers in a nonstandard directory <include dir>
+ CCAS assembler compiler command (defaults to CC)
+ CCASFLAGS assembler compiler flags (defaults to CFLAGS)
CPP C preprocessor
Use these variables to override the choices made by `configure' or to help
@@ -1467,10 +1502,10 @@
test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
cat <<\_ACEOF
-libpng configure 1.4.9beta01
-generated by GNU Autoconf 2.65
+libpng configure 1.5.10beta01
+generated by GNU Autoconf 2.68
-Copyright (C) 2009 Free Software Foundation, Inc.
+Copyright (C) 2010 Free Software Foundation, Inc.
This configure script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it.
_ACEOF
@@ -1514,7 +1549,7 @@
ac_retval=1
fi
- eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
as_fn_set_status $ac_retval
} # ac_fn_c_try_compile
@@ -1540,7 +1575,7 @@
mv -f conftest.er1 conftest.err
fi
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; } >/dev/null && {
+ test $ac_status = 0; } > conftest.i && {
test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
test ! -s conftest.err
}; then :
@@ -1551,7 +1586,7 @@
ac_retval=1
fi
- eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
as_fn_set_status $ac_retval
} # ac_fn_c_try_cpp
@@ -1597,7 +1632,7 @@
# interfere with the next link command; also delete a directory that is
# left behind by Apple's compiler. We do this before executing the actions.
rm -rf conftest.dSYM conftest_ipa8_conftest.oo
- eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
as_fn_set_status $ac_retval
} # ac_fn_c_try_link
@@ -1611,7 +1646,7 @@
as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
$as_echo_n "checking for $2... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -1629,7 +1664,7 @@
eval ac_res=\$$3
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
$as_echo "$ac_res" >&6; }
- eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
} # ac_fn_c_check_header_compile
@@ -1670,7 +1705,7 @@
ac_retval=$ac_status
fi
rm -rf conftest.dSYM conftest_ipa8_conftest.oo
- eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
as_fn_set_status $ac_retval
} # ac_fn_c_try_run
@@ -1683,7 +1718,7 @@
as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
$as_echo_n "checking for $2... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -1738,7 +1773,7 @@
eval ac_res=\$$3
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
$as_echo "$ac_res" >&6; }
- eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
} # ac_fn_c_check_func
@@ -1750,10 +1785,10 @@
ac_fn_c_check_header_mongrel ()
{
as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
- if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+ if eval \${$3+:} false; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
$as_echo_n "checking for $2... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
$as_echo_n "(cached) " >&6
fi
eval ac_res=\$$3
@@ -1789,7 +1824,7 @@
else
ac_header_preproc=no
fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_preproc" >&5
$as_echo "$ac_header_preproc" >&6; }
@@ -1812,17 +1847,15 @@
$as_echo "$as_me: WARNING: $2: section \"Present But Cannot Be Compiled\"" >&2;}
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
-( cat <<\_ASBOX
-## ------------------------------------------------------ ##
+( $as_echo "## ------------------------------------------------------ ##
## Report this to png-mng-implement@lists.sourceforge.net ##
-## ------------------------------------------------------ ##
-_ASBOX
+## ------------------------------------------------------ ##"
) | sed "s/^/$as_me: WARNING: /" >&2
;;
esac
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
$as_echo_n "checking for $2... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
$as_echo_n "(cached) " >&6
else
eval "$3=\$ac_header_compiler"
@@ -1831,7 +1864,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
$as_echo "$ac_res" >&6; }
fi
- eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
} # ac_fn_c_check_header_mongrel
@@ -1844,7 +1877,7 @@
as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
$as_echo_n "checking for $2... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
$as_echo_n "(cached) " >&6
else
eval "$3=no"
@@ -1885,15 +1918,15 @@
eval ac_res=\$$3
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
$as_echo "$ac_res" >&6; }
- eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
} # ac_fn_c_check_type
cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
-It was created by libpng $as_me 1.4.9beta01, which was
-generated by GNU Autoconf 2.65. Invocation command line was
+It was created by libpng $as_me 1.5.10beta01, which was
+generated by GNU Autoconf 2.68. Invocation command line was
$ $0 $@
@@ -2003,11 +2036,9 @@
{
echo
- cat <<\_ASBOX
-## ---------------- ##
+ $as_echo "## ---------------- ##
## Cache variables. ##
-## ---------------- ##
-_ASBOX
+## ---------------- ##"
echo
# The following way of writing the cache mishandles newlines in values,
(
@@ -2041,11 +2072,9 @@
)
echo
- cat <<\_ASBOX
-## ----------------- ##
+ $as_echo "## ----------------- ##
## Output variables. ##
-## ----------------- ##
-_ASBOX
+## ----------------- ##"
echo
for ac_var in $ac_subst_vars
do
@@ -2058,11 +2087,9 @@
echo
if test -n "$ac_subst_files"; then
- cat <<\_ASBOX
-## ------------------- ##
+ $as_echo "## ------------------- ##
## File substitutions. ##
-## ------------------- ##
-_ASBOX
+## ------------------- ##"
echo
for ac_var in $ac_subst_files
do
@@ -2076,11 +2103,9 @@
fi
if test -s confdefs.h; then
- cat <<\_ASBOX
-## ----------- ##
+ $as_echo "## ----------- ##
## confdefs.h. ##
-## ----------- ##
-_ASBOX
+## ----------- ##"
echo
cat confdefs.h
echo
@@ -2135,7 +2160,12 @@
ac_site_file1=NONE
ac_site_file2=NONE
if test -n "$CONFIG_SITE"; then
- ac_site_file1=$CONFIG_SITE
+ # We do not want a PATH search for config.site.
+ case $CONFIG_SITE in #((
+ -*) ac_site_file1=./$CONFIG_SITE;;
+ */*) ac_site_file1=$CONFIG_SITE;;
+ *) ac_site_file1=./$CONFIG_SITE;;
+ esac
elif test "x$prefix" != xNONE; then
ac_site_file1=$prefix/share/config.site
ac_site_file2=$prefix/etc/config.site
@@ -2150,7 +2180,11 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
$as_echo "$as_me: loading site script $ac_site_file" >&6;}
sed 's/^/| /' "$ac_site_file" >&5
- . "$ac_site_file"
+ . "$ac_site_file" \
+ || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "failed to load site script $ac_site_file
+See \`config.log' for more details" "$LINENO" 5; }
fi
done
@@ -2226,7 +2260,7 @@
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
{ $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
- as_fn_error "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+ as_fn_error $? "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
fi
## -------------------- ##
## Main body of script. ##
@@ -2243,16 +2277,22 @@
ac_aux_dir=
for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
- for ac_t in install-sh install.sh shtool; do
- if test -f "$ac_dir/$ac_t"; then
- ac_aux_dir=$ac_dir
- ac_install_sh="$ac_aux_dir/$ac_t -c"
- break 2
- fi
- done
+ if test -f "$ac_dir/install-sh"; then
+ ac_aux_dir=$ac_dir
+ ac_install_sh="$ac_aux_dir/install-sh -c"
+ break
+ elif test -f "$ac_dir/install.sh"; then
+ ac_aux_dir=$ac_dir
+ ac_install_sh="$ac_aux_dir/install.sh -c"
+ break
+ elif test -f "$ac_dir/shtool"; then
+ ac_aux_dir=$ac_dir
+ ac_install_sh="$ac_aux_dir/shtool install -c"
+ break
+ fi
done
if test -z "$ac_aux_dir"; then
- as_fn_error "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
+ as_fn_error $? "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
fi
# These three variables are undocumented and unsupported,
@@ -2281,7 +2321,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
$as_echo_n "checking for a BSD-compatible install... " >&6; }
if test -z "$INSTALL"; then
-if test "${ac_cv_path_install+set}" = set; then :
+if ${ac_cv_path_install+:} false; then :
$as_echo_n "(cached) " >&6
else
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -2368,11 +2408,11 @@
'
case `pwd` in
*[\\\"\#\$\&\'\`$am_lf]*)
- as_fn_error "unsafe absolute working directory name" "$LINENO" 5;;
+ as_fn_error $? "unsafe absolute working directory name" "$LINENO" 5;;
esac
case $srcdir in
*[\\\"\#\$\&\'\`$am_lf\ \ ]*)
- as_fn_error "unsafe srcdir value: \`$srcdir'" "$LINENO" 5;;
+ as_fn_error $? "unsafe srcdir value: \`$srcdir'" "$LINENO" 5;;
esac
# Do `set' in a subshell so we don't clobber the current shell's
@@ -2394,7 +2434,7 @@
# if, for instance, CONFIG_SHELL is bash and it inherits a
# broken ls alias from the environment. This has actually
# happened. Such a system could not be considered "sane".
- as_fn_error "ls -t appears to fail. Make sure there is not a broken
+ as_fn_error $? "ls -t appears to fail. Make sure there is not a broken
alias in your environment" "$LINENO" 5
fi
@@ -2404,7 +2444,7 @@
# Ok.
:
else
- as_fn_error "newly created file is older than distributed files!
+ as_fn_error $? "newly created file is older than distributed files!
Check your system clock" "$LINENO" 5
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
@@ -2458,7 +2498,7 @@
set dummy ${ac_tool_prefix}strip; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_STRIP+set}" = set; then :
+if ${ac_cv_prog_STRIP+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$STRIP"; then
@@ -2498,7 +2538,7 @@
set dummy strip; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_STRIP+set}" = set; then :
+if ${ac_cv_prog_ac_ct_STRIP+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_STRIP"; then
@@ -2551,7 +2591,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5
$as_echo_n "checking for a thread-safe mkdir -p... " >&6; }
if test -z "$MKDIR_P"; then
- if test "${ac_cv_path_mkdir+set}" = set; then :
+ if ${ac_cv_path_mkdir+:} false; then :
$as_echo_n "(cached) " >&6
else
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -2602,7 +2642,7 @@
set dummy $ac_prog; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_AWK+set}" = set; then :
+if ${ac_cv_prog_AWK+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$AWK"; then
@@ -2642,7 +2682,7 @@
$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
set x ${MAKE-make}
ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
-if { as_var=ac_cv_prog_make_${ac_make}_set; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${ac_cv_prog_make_${ac_make}_set+:} false; then :
$as_echo_n "(cached) " >&6
else
cat >conftest.make <<\_ACEOF
@@ -2650,7 +2690,7 @@
all:
@echo '@@@%%%=$(MAKE)=@@@%%%'
_ACEOF
-# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+# GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
case `${MAKE-make} -f conftest.make 2>/dev/null` in
*@@@%%%=?*=@@@%%%*)
eval ac_cv_prog_make_${ac_make}_set=yes;;
@@ -2684,7 +2724,7 @@
am__isrc=' -I$(srcdir)'
# test to see if srcdir already configured
if test -f $srcdir/config.status; then
- as_fn_error "source directory already configured; run \"make distclean\" there first" "$LINENO" 5
+ as_fn_error $? "source directory already configured; run \"make distclean\" there first" "$LINENO" 5
fi
fi
@@ -2700,7 +2740,7 @@
# Define the identity of the package.
PACKAGE='libpng'
- VERSION='1.4.9beta01'
+ VERSION='1.5.10beta01'
cat >>confdefs.h <<_ACEOF
@@ -2764,10 +2804,10 @@
-PNGLIB_VERSION=1.4.9beta01
+PNGLIB_VERSION=1.5.10beta01
PNGLIB_MAJOR=1
-PNGLIB_MINOR=4
-PNGLIB_RELEASE=9
+PNGLIB_MINOR=5
+PNGLIB_RELEASE=10
@@ -2780,12 +2820,18 @@
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
if test -n "$ac_tool_prefix"; then
# Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
set dummy ${ac_tool_prefix}gcc; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$CC"; then
@@ -2825,7 +2871,7 @@
set dummy gcc; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_CC"; then
@@ -2878,7 +2924,7 @@
set dummy ${ac_tool_prefix}cc; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$CC"; then
@@ -2918,7 +2964,7 @@
set dummy cc; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$CC"; then
@@ -2977,7 +3023,7 @@
set dummy $ac_tool_prefix$ac_prog; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$CC"; then
@@ -3021,7 +3067,7 @@
set dummy $ac_prog; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_CC"; then
@@ -3075,8 +3121,8 @@
test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "no acceptable C compiler found in \$PATH
-See \`config.log' for more details." "$LINENO" 5; }
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
# Provide some information about the compiler.
$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
@@ -3190,9 +3236,8 @@
{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ as_fn_set_status 77
-as_fn_error "C compiler cannot create executables
-See \`config.log' for more details." "$LINENO" 5; }; }
+as_fn_error 77 "C compiler cannot create executables
+See \`config.log' for more details" "$LINENO" 5; }
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
@@ -3234,8 +3279,8 @@
else
{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "cannot compute suffix of executables: cannot compile and link
-See \`config.log' for more details." "$LINENO" 5; }
+as_fn_error $? "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details" "$LINENO" 5; }
fi
rm -f conftest conftest$ac_cv_exeext
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
@@ -3292,9 +3337,9 @@
else
{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "cannot run C compiled programs.
+as_fn_error $? "cannot run C compiled programs.
If you meant to cross compile, use \`--host'.
-See \`config.log' for more details." "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5; }
fi
fi
fi
@@ -3305,7 +3350,7 @@
ac_clean_files=$ac_clean_files_save
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
$as_echo_n "checking for suffix of object files... " >&6; }
-if test "${ac_cv_objext+set}" = set; then :
+if ${ac_cv_objext+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -3345,8 +3390,8 @@
{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "cannot compute suffix of object files: cannot compile
-See \`config.log' for more details." "$LINENO" 5; }
+as_fn_error $? "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details" "$LINENO" 5; }
fi
rm -f conftest.$ac_cv_objext conftest.$ac_ext
fi
@@ -3356,7 +3401,7 @@
ac_objext=$OBJEXT
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
-if test "${ac_cv_c_compiler_gnu+set}" = set; then :
+if ${ac_cv_c_compiler_gnu+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -3393,7 +3438,7 @@
ac_save_CFLAGS=$CFLAGS
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
$as_echo_n "checking whether $CC accepts -g... " >&6; }
-if test "${ac_cv_prog_cc_g+set}" = set; then :
+if ${ac_cv_prog_cc_g+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_save_c_werror_flag=$ac_c_werror_flag
@@ -3471,7 +3516,7 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
-if test "${ac_cv_prog_cc_c89+set}" = set; then :
+if ${ac_cv_prog_cc_c89+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_cv_prog_cc_c89=no
@@ -3617,6 +3662,7 @@
if test "x$enable_dependency_tracking" != xno; then
am_depcomp="$ac_aux_dir/depcomp"
AMDEPBACKSLASH='\'
+ am__nodep='_no'
fi
if test "x$enable_dependency_tracking" != xno; then
AMDEP_TRUE=
@@ -3632,7 +3678,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5
$as_echo_n "checking dependency style of $depcc... " >&6; }
-if test "${am_cv_CC_dependencies_compiler_type+set}" = set; then :
+if ${am_cv_CC_dependencies_compiler_type+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
@@ -3641,6 +3687,7 @@
# instance it was reported that on HP-UX the gcc test will end up
# making a dummy file named `D' -- because `-MD' means `put the output
# in D'.
+ rm -rf conftest.dir
mkdir conftest.dir
# Copy depcomp to subdir because otherwise we won't find it if we're
# using a relative directory.
@@ -3700,7 +3747,7 @@
break
fi
;;
- msvisualcpp | msvcmsys)
+ msvc7 | msvc7msys | msvisualcpp | msvcmsys)
# This compiler won't grok `-c -o', but also, the minuso test has
# not run yet. These depmodes are late enough in the game, and
# so weak that their functioning should not be impacted.
@@ -3755,29 +3802,162 @@
fi
+# By default we simply use the C compiler to build assembly code.
+
+test "${CCAS+set}" = set || CCAS=$CC
+test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
+
+
+
+depcc="$CCAS" am_compiler_list=
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5
+$as_echo_n "checking dependency style of $depcc... " >&6; }
+if ${am_cv_CCAS_dependencies_compiler_type+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+ # We make a subdir and do the tests there. Otherwise we can end up
+ # making bogus files that we don't know about and never remove. For
+ # instance it was reported that on HP-UX the gcc test will end up
+ # making a dummy file named `D' -- because `-MD' means `put the output
+ # in D'.
+ rm -rf conftest.dir
+ mkdir conftest.dir
+ # Copy depcomp to subdir because otherwise we won't find it if we're
+ # using a relative directory.
+ cp "$am_depcomp" conftest.dir
+ cd conftest.dir
+ # We will build objects and dependencies in a subdirectory because
+ # it helps to detect inapplicable dependency modes. For instance
+ # both Tru64's cc and ICC support -MD to output dependencies as a
+ # side effect of compilation, but ICC will put the dependencies in
+ # the current directory while Tru64 will put them in the object
+ # directory.
+ mkdir sub
+
+ am_cv_CCAS_dependencies_compiler_type=none
+ if test "$am_compiler_list" = ""; then
+ am_compiler_list=`sed -n 's/^#*\([a-zA-Z0-9]*\))$/\1/p' < ./depcomp`
+ fi
+ am__universal=false
+
+
+ for depmode in $am_compiler_list; do
+ # Setup a source with many dependencies, because some compilers
+ # like to wrap large dependency lists on column 80 (with \), and
+ # we should not choose a depcomp mode which is confused by this.
+ #
+ # We need to recreate these files for each test, as the compiler may
+ # overwrite some of them when testing with obscure command lines.
+ # This happens at least with the AIX C compiler.
+ : > sub/conftest.c
+ for i in 1 2 3 4 5 6; do
+ echo '#include "conftst'$i'.h"' >> sub/conftest.c
+ # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+ # Solaris 8's {/usr,}/bin/sh.
+ touch sub/conftst$i.h
+ done
+ echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+ # We check with `-c' and `-o' for the sake of the "dashmstdout"
+ # mode. It turns out that the SunPro C++ compiler does not properly
+ # handle `-M -o', and we need to detect this. Also, some Intel
+ # versions had trouble with output in subdirs
+ am__obj=sub/conftest.${OBJEXT-o}
+ am__minus_obj="-o $am__obj"
+ case $depmode in
+ gcc)
+ # This depmode causes a compiler race in universal mode.
+ test "$am__universal" = false || continue
+ ;;
+ nosideeffect)
+ # after this tag, mechanisms are not by side-effect, so they'll
+ # only be used when explicitly requested
+ if test "x$enable_dependency_tracking" = xyes; then
+ continue
+ else
+ break
+ fi
+ ;;
+ msvc7 | msvc7msys | msvisualcpp | msvcmsys)
+ # This compiler won't grok `-c -o', but also, the minuso test has
+ # not run yet. These depmodes are late enough in the game, and
+ # so weak that their functioning should not be impacted.
+ am__obj=conftest.${OBJEXT-o}
+ am__minus_obj=
+ ;;
+ none) break ;;
+ esac
+ if depmode=$depmode \
+ source=sub/conftest.c object=$am__obj \
+ depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+ $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+ >/dev/null 2>conftest.err &&
+ grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+ ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+ # icc doesn't choke on unknown options, it will just issue warnings
+ # or remarks (even with -Werror). So we grep stderr for any message
+ # that says an option was ignored or not supported.
+ # When given -MP, icc 7.0 and 7.1 complain thusly:
+ # icc: Command line warning: ignoring option '-M'; no argument required
+ # The diagnosis changed in icc 8.0:
+ # icc: Command line remark: option '-MP' not supported
+ if (grep 'ignoring option' conftest.err ||
+ grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+ am_cv_CCAS_dependencies_compiler_type=$depmode
+ break
+ fi
+ fi
+ done
+
+ cd ..
+ rm -rf conftest.dir
+else
+ am_cv_CCAS_dependencies_compiler_type=none
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_CCAS_dependencies_compiler_type" >&5
+$as_echo "$am_cv_CCAS_dependencies_compiler_type" >&6; }
+CCASDEPMODE=depmode=$am_cv_CCAS_dependencies_compiler_type
+
+ if
+ test "x$enable_dependency_tracking" != xno \
+ && test "$am_cv_CCAS_dependencies_compiler_type" = gcc3; then
+ am__fastdepCCAS_TRUE=
+ am__fastdepCCAS_FALSE='#'
+else
+ am__fastdepCCAS_TRUE='#'
+ am__fastdepCCAS_FALSE=
+fi
+
+
# Make sure we can run config.sub.
$SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
- as_fn_error "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5
+ as_fn_error $? "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
$as_echo_n "checking build system type... " >&6; }
-if test "${ac_cv_build+set}" = set; then :
+if ${ac_cv_build+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_build_alias=$build_alias
test "x$ac_build_alias" = x &&
ac_build_alias=`$SHELL "$ac_aux_dir/config.guess"`
test "x$ac_build_alias" = x &&
- as_fn_error "cannot guess build type; you must specify one" "$LINENO" 5
+ as_fn_error $? "cannot guess build type; you must specify one" "$LINENO" 5
ac_cv_build=`$SHELL "$ac_aux_dir/config.sub" $ac_build_alias` ||
- as_fn_error "$SHELL $ac_aux_dir/config.sub $ac_build_alias failed" "$LINENO" 5
+ as_fn_error $? "$SHELL $ac_aux_dir/config.sub $ac_build_alias failed" "$LINENO" 5
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
$as_echo "$ac_cv_build" >&6; }
case $ac_cv_build in
*-*-*) ;;
-*) as_fn_error "invalid value of canonical build" "$LINENO" 5;;
+*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;
esac
build=$ac_cv_build
ac_save_IFS=$IFS; IFS='-'
@@ -3795,14 +3975,14 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
$as_echo_n "checking host system type... " >&6; }
-if test "${ac_cv_host+set}" = set; then :
+if ${ac_cv_host+:} false; then :
$as_echo_n "(cached) " >&6
else
if test "x$host_alias" = x; then
ac_cv_host=$ac_cv_build
else
ac_cv_host=`$SHELL "$ac_aux_dir/config.sub" $host_alias` ||
- as_fn_error "$SHELL $ac_aux_dir/config.sub $host_alias failed" "$LINENO" 5
+ as_fn_error $? "$SHELL $ac_aux_dir/config.sub $host_alias failed" "$LINENO" 5
fi
fi
@@ -3810,7 +3990,7 @@
$as_echo "$ac_cv_host" >&6; }
case $ac_cv_host in
*-*-*) ;;
-*) as_fn_error "invalid value of canonical host" "$LINENO" 5;;
+*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;
esac
host=$ac_cv_host
ac_save_IFS=$IFS; IFS='-'
@@ -3828,7 +4008,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5
$as_echo_n "checking for a sed that does not truncate output... " >&6; }
-if test "${ac_cv_path_SED+set}" = set; then :
+if ${ac_cv_path_SED+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
@@ -3883,7 +4063,7 @@
done
IFS=$as_save_IFS
if test -z "$ac_cv_path_SED"; then
- as_fn_error "no acceptable sed could be found in \$PATH" "$LINENO" 5
+ as_fn_error $? "no acceptable sed could be found in \$PATH" "$LINENO" 5
fi
else
ac_cv_path_SED=$SED
@@ -3910,7 +4090,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
-if test "${ac_cv_path_GREP+set}" = set; then :
+if ${ac_cv_path_GREP+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -z "$GREP"; then
@@ -3959,7 +4139,7 @@
done
IFS=$as_save_IFS
if test -z "$ac_cv_path_GREP"; then
- as_fn_error "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+ as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
fi
else
ac_cv_path_GREP=$GREP
@@ -3973,7 +4153,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
$as_echo_n "checking for egrep... " >&6; }
-if test "${ac_cv_path_EGREP+set}" = set; then :
+if ${ac_cv_path_EGREP+:} false; then :
$as_echo_n "(cached) " >&6
else
if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
@@ -4025,7 +4205,7 @@
done
IFS=$as_save_IFS
if test -z "$ac_cv_path_EGREP"; then
- as_fn_error "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+ as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
fi
else
ac_cv_path_EGREP=$EGREP
@@ -4040,7 +4220,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fgrep" >&5
$as_echo_n "checking for fgrep... " >&6; }
-if test "${ac_cv_path_FGREP+set}" = set; then :
+if ${ac_cv_path_FGREP+:} false; then :
$as_echo_n "(cached) " >&6
else
if echo 'ab*c' | $GREP -F 'ab*c' >/dev/null 2>&1
@@ -4092,7 +4272,7 @@
done
IFS=$as_save_IFS
if test -z "$ac_cv_path_FGREP"; then
- as_fn_error "no acceptable fgrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+ as_fn_error $? "no acceptable fgrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
fi
else
ac_cv_path_FGREP=$FGREP
@@ -4130,7 +4310,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to print strings" >&5
$as_echo_n "checking how to print strings... " >&6; }
# Test print first, because it will be a builtin if present.
-if test "X`print -r -- -n 2>/dev/null`" = X-n && \
+if test "X`( print -r -- -n ) 2>/dev/null`" = X-n && \
test "X`print -r -- $ECHO 2>/dev/null`" = "X$ECHO"; then
ECHO='print -r --'
elif test "X`printf %s $ECHO 2>/dev/null`" = "X$ECHO"; then
@@ -4223,7 +4403,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5
$as_echo_n "checking for non-GNU ld... " >&6; }
fi
-if test "${lt_cv_path_LD+set}" = set; then :
+if ${lt_cv_path_LD+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -z "$LD"; then
@@ -4260,10 +4440,10 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
-test -z "$LD" && as_fn_error "no acceptable ld found in \$PATH" "$LINENO" 5
+test -z "$LD" && as_fn_error $? "no acceptable ld found in \$PATH" "$LINENO" 5
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5
$as_echo_n "checking if the linker ($LD) is GNU ld... " >&6; }
-if test "${lt_cv_prog_gnu_ld+set}" = set; then :
+if ${lt_cv_prog_gnu_ld+:} false; then :
$as_echo_n "(cached) " >&6
else
# I'd rather use --version here, but apparently some GNU lds only accept -v.
@@ -4300,7 +4480,7 @@
CPP=
fi
if test -z "$CPP"; then
- if test "${ac_cv_prog_CPP+set}" = set; then :
+ if ${ac_cv_prog_CPP+:} false; then :
$as_echo_n "(cached) " >&6
else
# Double quotes because CPP needs to be expanded
@@ -4330,7 +4510,7 @@
# Broken: fails on valid input.
continue
fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
# OK, works on sane cases. Now check whether nonexistent headers
# can be detected and how.
@@ -4346,11 +4526,11 @@
ac_preproc_ok=:
break
fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
done
# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.i conftest.err conftest.$ac_ext
if $ac_preproc_ok; then :
break
fi
@@ -4389,7 +4569,7 @@
# Broken: fails on valid input.
continue
fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
# OK, works on sane cases. Now check whether nonexistent headers
# can be detected and how.
@@ -4405,18 +4585,18 @@
ac_preproc_ok=:
break
fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
done
# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.i conftest.err conftest.$ac_ext
if $ac_preproc_ok; then :
else
{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "C preprocessor \"$CPP\" fails sanity check
-See \`config.log' for more details." "$LINENO" 5; }
+as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details" "$LINENO" 5; }
fi
ac_ext=c
@@ -4430,7 +4610,7 @@
set dummy ${ac_tool_prefix}sed; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_SED+set}" = set; then :
+if ${ac_cv_prog_SED+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$SED"; then
@@ -4470,7 +4650,7 @@
set dummy sed; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_SED+set}" = set; then :
+if ${ac_cv_prog_ac_ct_SED+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_SED"; then
@@ -4517,6 +4697,98 @@
SED="$ac_cv_prog_SED"
fi
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}awk", so it can be a program name with args.
+set dummy ${ac_tool_prefix}awk; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_AWK+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$AWK"; then
+ ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_AWK="${ac_tool_prefix}awk"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+$as_echo "$AWK" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AWK"; then
+ ac_ct_AWK=$AWK
+ # Extract the first word of "awk", so it can be a program name with args.
+set dummy awk; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_AWK+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_AWK"; then
+ ac_cv_prog_ac_ct_AWK="$ac_ct_AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_AWK="awk"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AWK=$ac_cv_prog_ac_ct_AWK
+if test -n "$ac_ct_AWK"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AWK" >&5
+$as_echo "$ac_ct_AWK" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_AWK" = x; then
+ AWK=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ AWK=$ac_ct_AWK
+ fi
+else
+ AWK="$ac_cv_prog_AWK"
+fi
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5
$as_echo_n "checking whether ln -s works... " >&6; }
@@ -4533,7 +4805,7 @@
$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
set x ${MAKE-make}
ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
-if { as_var=ac_cv_prog_make_${ac_make}_set; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${ac_cv_prog_make_${ac_make}_set+:} false; then :
$as_echo_n "(cached) " >&6
else
cat >conftest.make <<\_ACEOF
@@ -4541,7 +4813,7 @@
all:
@echo '@@@%%%=$(MAKE)=@@@%%%'
_ACEOF
-# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+# GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
case `${MAKE-make} -f conftest.make 2>/dev/null` in
*@@@%%%=?*=@@@%%%*)
eval ac_cv_prog_make_${ac_make}_set=yes;;
@@ -4568,8 +4840,8 @@
-macro_version='2.2.10'
-macro_revision='1.3175'
+macro_version='2.4.2'
+macro_revision='1.3337'
@@ -4604,7 +4876,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for BSD- or MS-compatible name lister (nm)" >&5
$as_echo_n "checking for BSD- or MS-compatible name lister (nm)... " >&6; }
-if test "${lt_cv_path_NM+set}" = set; then :
+if ${lt_cv_path_NM+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$NM"; then
@@ -4667,7 +4939,7 @@
set dummy $ac_tool_prefix$ac_prog; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_DUMPBIN+set}" = set; then :
+if ${ac_cv_prog_DUMPBIN+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$DUMPBIN"; then
@@ -4711,7 +4983,7 @@
set dummy $ac_prog; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_DUMPBIN+set}" = set; then :
+if ${ac_cv_prog_ac_ct_DUMPBIN+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_DUMPBIN"; then
@@ -4783,7 +5055,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5
$as_echo_n "checking the name lister ($NM) interface... " >&6; }
-if test "${lt_cv_nm_interface+set}" = set; then :
+if ${lt_cv_nm_interface+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_nm_interface="BSD nm"
@@ -4807,7 +5079,7 @@
# find the maximum length of command line arguments
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the maximum length of command line arguments" >&5
$as_echo_n "checking the maximum length of command line arguments... " >&6; }
-if test "${lt_cv_sys_max_cmd_len+set}" = set; then :
+if ${lt_cv_sys_max_cmd_len+:} false; then :
$as_echo_n "(cached) " >&6
else
i=0
@@ -4870,6 +5142,11 @@
lt_cv_sys_max_cmd_len=196608
;;
+ os2*)
+ # The test takes a long time on OS/2.
+ lt_cv_sys_max_cmd_len=8192
+ ;;
+
osf*)
# Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
# due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
@@ -4909,7 +5186,7 @@
# If test is not a shell built-in, we'll probably end up computing a
# maximum length that is only half of the actual maximum length, but
# we can't tell.
- while { test "X"`func_fallback_echo "$teststring$teststring" 2>/dev/null` \
+ while { test "X"`env echo "$teststring$teststring" 2>/dev/null` \
= "X$teststring$teststring"; } >/dev/null 2>&1 &&
test $i != 17 # 1/2 MB should be enough
do
@@ -4952,8 +5229,8 @@
# Try some XSI features
xsi_shell=no
( _lt_dummy="a/b/c"
- test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
- = c,a/b,, \
+ test "${_lt_dummy##*/},${_lt_dummy%/*},${_lt_dummy#??}"${_lt_dummy%"$_lt_dummy"}, \
+ = c,a/b,b/c, \
&& eval 'test $(( 1 + 1 )) -eq 2 \
&& test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
&& xsi_shell=yes
@@ -5002,9 +5279,83 @@
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to $host format" >&5
+$as_echo_n "checking how to convert $build file names to $host format... " >&6; }
+if ${lt_cv_to_host_file_cmd+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $host in
+ *-*-mingw* )
+ case $build in
+ *-*-mingw* ) # actually msys
+ lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32
+ ;;
+ *-*-cygwin* )
+ lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32
+ ;;
+ * ) # otherwise, assume *nix
+ lt_cv_to_host_file_cmd=func_convert_file_nix_to_w32
+ ;;
+ esac
+ ;;
+ *-*-cygwin* )
+ case $build in
+ *-*-mingw* ) # actually msys
+ lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin
+ ;;
+ *-*-cygwin* )
+ lt_cv_to_host_file_cmd=func_convert_file_noop
+ ;;
+ * ) # otherwise, assume *nix
+ lt_cv_to_host_file_cmd=func_convert_file_nix_to_cygwin
+ ;;
+ esac
+ ;;
+ * ) # unhandled hosts (and "normal" native builds)
+ lt_cv_to_host_file_cmd=func_convert_file_noop
+ ;;
+esac
+
+fi
+
+to_host_file_cmd=$lt_cv_to_host_file_cmd
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_host_file_cmd" >&5
+$as_echo "$lt_cv_to_host_file_cmd" >&6; }
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to toolchain format" >&5
+$as_echo_n "checking how to convert $build file names to toolchain format... " >&6; }
+if ${lt_cv_to_tool_file_cmd+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ #assume ordinary cross tools, or native build.
+lt_cv_to_tool_file_cmd=func_convert_file_noop
+case $host in
+ *-*-mingw* )
+ case $build in
+ *-*-mingw* ) # actually msys
+ lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32
+ ;;
+ esac
+ ;;
+esac
+
+fi
+
+to_tool_file_cmd=$lt_cv_to_tool_file_cmd
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_tool_file_cmd" >&5
+$as_echo "$lt_cv_to_tool_file_cmd" >&6; }
+
+
+
+
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LD option to reload object files" >&5
$as_echo_n "checking for $LD option to reload object files... " >&6; }
-if test "${lt_cv_ld_reload_flag+set}" = set; then :
+if ${lt_cv_ld_reload_flag+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_ld_reload_flag='-r'
@@ -5018,6 +5369,11 @@
esac
reload_cmds='$LD$reload_flag -o $output$reload_objs'
case $host_os in
+ cygwin* | mingw* | pw32* | cegcc*)
+ if test "$GCC" != yes; then
+ reload_cmds=false
+ fi
+ ;;
darwin*)
if test "$GCC" = yes; then
reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
@@ -5040,7 +5396,7 @@
set dummy ${ac_tool_prefix}objdump; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_OBJDUMP+set}" = set; then :
+if ${ac_cv_prog_OBJDUMP+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$OBJDUMP"; then
@@ -5080,7 +5436,7 @@
set dummy objdump; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_OBJDUMP+set}" = set; then :
+if ${ac_cv_prog_ac_ct_OBJDUMP+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_OBJDUMP"; then
@@ -5136,7 +5492,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to recognize dependent libraries" >&5
$as_echo_n "checking how to recognize dependent libraries... " >&6; }
-if test "${lt_cv_deplibs_check_method+set}" = set; then :
+if ${lt_cv_deplibs_check_method+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_file_magic_cmd='$MAGIC_CMD'
@@ -5256,7 +5612,7 @@
lt_cv_deplibs_check_method=pass_all
;;
-# This must be Linux ELF.
+# This must be glibc/ELF.
linux* | k*bsd*-gnu | kopensolaris*-gnu)
lt_cv_deplibs_check_method=pass_all
;;
@@ -5338,6 +5694,21 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_deplibs_check_method" >&5
$as_echo "$lt_cv_deplibs_check_method" >&6; }
+
+file_magic_glob=
+want_nocaseglob=no
+if test "$build" = "$host"; then
+ case $host_os in
+ mingw* | pw32*)
+ if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then
+ want_nocaseglob=yes
+ else
+ file_magic_glob=`echo aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ | $SED -e "s/\(..\)/s\/[\1]\/[\1]\/g;/g"`
+ fi
+ ;;
+ esac
+fi
+
file_magic_cmd=$lt_cv_file_magic_cmd
deplibs_check_method=$lt_cv_deplibs_check_method
test -z "$deplibs_check_method" && deplibs_check_method=unknown
@@ -5353,12 +5724,163 @@
+
+
+
+
+
+
+
+
+
+
if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
-set dummy ${ac_tool_prefix}ar; ac_word=$2
+ # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args.
+set dummy ${ac_tool_prefix}dlltool; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_AR+set}" = set; then :
+if ${ac_cv_prog_DLLTOOL+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$DLLTOOL"; then
+ ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+DLLTOOL=$ac_cv_prog_DLLTOOL
+if test -n "$DLLTOOL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DLLTOOL" >&5
+$as_echo "$DLLTOOL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_DLLTOOL"; then
+ ac_ct_DLLTOOL=$DLLTOOL
+ # Extract the first word of "dlltool", so it can be a program name with args.
+set dummy dlltool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_DLLTOOL+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_DLLTOOL"; then
+ ac_cv_prog_ac_ct_DLLTOOL="$ac_ct_DLLTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_DLLTOOL="dlltool"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DLLTOOL=$ac_cv_prog_ac_ct_DLLTOOL
+if test -n "$ac_ct_DLLTOOL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DLLTOOL" >&5
+$as_echo "$ac_ct_DLLTOOL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_DLLTOOL" = x; then
+ DLLTOOL="false"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ DLLTOOL=$ac_ct_DLLTOOL
+ fi
+else
+ DLLTOOL="$ac_cv_prog_DLLTOOL"
+fi
+
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to associate runtime and link libraries" >&5
+$as_echo_n "checking how to associate runtime and link libraries... " >&6; }
+if ${lt_cv_sharedlib_from_linklib_cmd+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_sharedlib_from_linklib_cmd='unknown'
+
+case $host_os in
+cygwin* | mingw* | pw32* | cegcc*)
+ # two different shell functions defined in ltmain.sh
+ # decide which to use based on capabilities of $DLLTOOL
+ case `$DLLTOOL --help 2>&1` in
+ *--identify-strict*)
+ lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib
+ ;;
+ *)
+ lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib_fallback
+ ;;
+ esac
+ ;;
+*)
+ # fallback: assume linklib IS sharedlib
+ lt_cv_sharedlib_from_linklib_cmd="$ECHO"
+ ;;
+esac
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sharedlib_from_linklib_cmd" >&5
+$as_echo "$lt_cv_sharedlib_from_linklib_cmd" >&6; }
+sharedlib_from_linklib_cmd=$lt_cv_sharedlib_from_linklib_cmd
+test -z "$sharedlib_from_linklib_cmd" && sharedlib_from_linklib_cmd=$ECHO
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+ for ac_prog in ar
+ do
+ # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_AR+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$AR"; then
@@ -5371,7 +5893,7 @@
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
- ac_cv_prog_AR="${ac_tool_prefix}ar"
+ ac_cv_prog_AR="$ac_tool_prefix$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
fi
@@ -5391,14 +5913,18 @@
fi
+ test -n "$AR" && break
+ done
fi
-if test -z "$ac_cv_prog_AR"; then
+if test -z "$AR"; then
ac_ct_AR=$AR
- # Extract the first word of "ar", so it can be a program name with args.
-set dummy ar; ac_word=$2
+ for ac_prog in ar
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_AR+set}" = set; then :
+if ${ac_cv_prog_ac_ct_AR+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_AR"; then
@@ -5411,7 +5937,7 @@
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
- ac_cv_prog_ac_ct_AR="ar"
+ ac_cv_prog_ac_ct_AR="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
fi
@@ -5430,6 +5956,10 @@
$as_echo "no" >&6; }
fi
+
+ test -n "$ac_ct_AR" && break
+done
+
if test "x$ac_ct_AR" = x; then
AR="false"
else
@@ -5441,12 +5971,10 @@
esac
AR=$ac_ct_AR
fi
-else
- AR="$ac_cv_prog_AR"
fi
-test -z "$AR" && AR=ar
-test -z "$AR_FLAGS" && AR_FLAGS=cru
+: ${AR=ar}
+: ${AR_FLAGS=cru}
@@ -5458,12 +5986,70 @@
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for archiver @FILE support" >&5
+$as_echo_n "checking for archiver @FILE support... " >&6; }
+if ${lt_cv_ar_at_file+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_ar_at_file=no
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ echo conftest.$ac_objext > conftest.lst
+ lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5
+ (eval $lt_ar_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }
+ if test "$ac_status" -eq 0; then
+ # Ensure the archiver fails upon bogus file names.
+ rm -f conftest.$ac_objext libconftest.a
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5
+ (eval $lt_ar_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }
+ if test "$ac_status" -ne 0; then
+ lt_cv_ar_at_file=@
+ fi
+ fi
+ rm -f conftest.* libconftest.a
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ar_at_file" >&5
+$as_echo "$lt_cv_ar_at_file" >&6; }
+
+if test "x$lt_cv_ar_at_file" = xno; then
+ archiver_list_spec=
+else
+ archiver_list_spec=$lt_cv_ar_at_file
+fi
+
+
+
+
+
+
+
if test -n "$ac_tool_prefix"; then
# Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
set dummy ${ac_tool_prefix}strip; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_STRIP+set}" = set; then :
+if ${ac_cv_prog_STRIP+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$STRIP"; then
@@ -5503,7 +6089,7 @@
set dummy strip; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_STRIP+set}" = set; then :
+if ${ac_cv_prog_ac_ct_STRIP+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_STRIP"; then
@@ -5562,7 +6148,7 @@
set dummy ${ac_tool_prefix}ranlib; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_RANLIB+set}" = set; then :
+if ${ac_cv_prog_RANLIB+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$RANLIB"; then
@@ -5602,7 +6188,7 @@
set dummy ranlib; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_RANLIB+set}" = set; then :
+if ${ac_cv_prog_ac_ct_RANLIB+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_RANLIB"; then
@@ -5664,13 +6250,13 @@
if test -n "$RANLIB"; then
case $host_os in
openbsd*)
- old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib"
;;
*)
- old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib"
;;
esac
- old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+ old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib"
fi
case $host_os in
@@ -5731,7 +6317,7 @@
# Check for command to grab the raw symbol name followed by C symbol from nm.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking command to parse $NM output from $compiler object" >&5
$as_echo_n "checking command to parse $NM output from $compiler object... " >&6; }
-if test "${lt_cv_sys_global_symbol_pipe+set}" = set; then :
+if ${lt_cv_sys_global_symbol_pipe+:} false; then :
$as_echo_n "(cached) " >&6
else
@@ -5792,8 +6378,8 @@
lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
# Transform an extracted symbol line into symbol name and symbol address
-lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([^ ]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"\2\", (void *) \&\2},/p'"
-lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([^ ]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \(lib[^ ]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([^ ]*\)[ ]*$/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([^ ]*\)[ ]*$/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \(lib[^ ]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
# Handle CRLF in mingw tool chain
opt_cr=
@@ -5817,6 +6403,7 @@
# which start with @ or ?.
lt_cv_sys_global_symbol_pipe="$AWK '"\
" {last_section=section; section=\$ 3};"\
+" /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\
" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
" \$ 0!~/External *\|/{next};"\
" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
@@ -5829,6 +6416,7 @@
else
lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[ ]\($symcode$symcode*\)[ ][ ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
fi
+ lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'"
# Check to see that the pipe works correctly.
pipe_works=no
@@ -5870,6 +6458,18 @@
if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
cat <<_LT_EOF > conftest.$ac_ext
+/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */
+#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE)
+/* DATA imports from DLLs on WIN32 con't be const, because runtime
+ relocations are performed -- see ld's documentation on pseudo-relocs. */
+# define LT_DLSYM_CONST
+#elif defined(__osf__)
+/* This system does not cope well with relocations in const data. */
+# define LT_DLSYM_CONST
+#else
+# define LT_DLSYM_CONST const
+#endif
+
#ifdef __cplusplus
extern "C" {
#endif
@@ -5881,7 +6481,7 @@
cat <<_LT_EOF >> conftest.$ac_ext
/* The mapping between symbol names and symbols. */
-const struct {
+LT_DLSYM_CONST struct {
const char *name;
void *address;
}
@@ -5907,8 +6507,8 @@
_LT_EOF
# Now try linking the two files.
mv conftest.$ac_objext conftstm.$ac_objext
- lt_save_LIBS="$LIBS"
- lt_save_CFLAGS="$CFLAGS"
+ lt_globsym_save_LIBS=$LIBS
+ lt_globsym_save_CFLAGS=$CFLAGS
LIBS="conftstm.$ac_objext"
CFLAGS="$CFLAGS$lt_prog_compiler_no_builtin_flag"
if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
@@ -5918,8 +6518,8 @@
test $ac_status = 0; } && test -s conftest${ac_exeext}; then
pipe_works=yes
fi
- LIBS="$lt_save_LIBS"
- CFLAGS="$lt_save_CFLAGS"
+ LIBS=$lt_globsym_save_LIBS
+ CFLAGS=$lt_globsym_save_CFLAGS
else
echo "cannot find nm_test_func in $nlist" >&5
fi
@@ -5956,6 +6556,12 @@
$as_echo "ok" >&6; }
fi
+# Response file support.
+if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+ nm_file_list_spec='@'
+elif $NM --help 2>/dev/null | grep '[@]FILE' >/dev/null; then
+ nm_file_list_spec='@'
+fi
@@ -5978,6 +6584,48 @@
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysroot" >&5
+$as_echo_n "checking for sysroot... " >&6; }
+
+# Check whether --with-sysroot was given.
+if test "${with_sysroot+set}" = set; then :
+ withval=$with_sysroot;
+else
+ with_sysroot=no
+fi
+
+
+lt_sysroot=
+case ${with_sysroot} in #(
+ yes)
+ if test "$GCC" = yes; then
+ lt_sysroot=`$CC --print-sysroot 2>/dev/null`
+ fi
+ ;; #(
+ /*)
+ lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
+ ;; #(
+ no|'')
+ ;; #(
+ *)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${with_sysroot}" >&5
+$as_echo "${with_sysroot}" >&6; }
+ as_fn_error $? "The sysroot must be an absolute path." "$LINENO" 5
+ ;;
+esac
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${lt_sysroot:-no}" >&5
+$as_echo "${lt_sysroot:-no}" >&6; }
+
+
+
+
+
# Check whether --enable-libtool-lock was given.
if test "${enable_libtool_lock+set}" = set; then :
enableval=$enable_libtool_lock;
@@ -6103,7 +6751,7 @@
CFLAGS="$CFLAGS -belf"
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler needs -belf" >&5
$as_echo_n "checking whether the C compiler needs -belf... " >&6; }
-if test "${lt_cv_cc_needs_belf+set}" = set; then :
+if ${lt_cv_cc_needs_belf+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_ext=c
@@ -6144,7 +6792,7 @@
CFLAGS="$SAVE_CFLAGS"
fi
;;
-sparc*-*solaris*)
+*-*solaris*)
# Find out which ABI we are using.
echo 'int i;' > conftest.$ac_ext
if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
@@ -6155,7 +6803,20 @@
case `/usr/bin/file conftest.o` in
*64-bit*)
case $lt_cv_prog_gnu_ld in
- yes*) LD="${LD-ld} -m elf64_sparc" ;;
+ yes*)
+ case $host in
+ i?86-*-solaris*)
+ LD="${LD-ld} -m elf_x86_64"
+ ;;
+ sparc*-*-solaris*)
+ LD="${LD-ld} -m elf64_sparc"
+ ;;
+ esac
+ # GNU ld 2.21 introduced _sol2 emulations. Use them if available.
+ if ${LD-ld} -V | grep _sol2 >/dev/null 2>&1; then
+ LD="${LD-ld}_sol2"
+ fi
+ ;;
*)
if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
LD="${LD-ld} -64"
@@ -6171,6 +6832,123 @@
need_locks="$enable_libtool_lock"
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}mt", so it can be a program name with args.
+set dummy ${ac_tool_prefix}mt; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_MANIFEST_TOOL+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$MANIFEST_TOOL"; then
+ ac_cv_prog_MANIFEST_TOOL="$MANIFEST_TOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_MANIFEST_TOOL="${ac_tool_prefix}mt"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+MANIFEST_TOOL=$ac_cv_prog_MANIFEST_TOOL
+if test -n "$MANIFEST_TOOL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MANIFEST_TOOL" >&5
+$as_echo "$MANIFEST_TOOL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_MANIFEST_TOOL"; then
+ ac_ct_MANIFEST_TOOL=$MANIFEST_TOOL
+ # Extract the first word of "mt", so it can be a program name with args.
+set dummy mt; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_MANIFEST_TOOL+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_MANIFEST_TOOL"; then
+ ac_cv_prog_ac_ct_MANIFEST_TOOL="$ac_ct_MANIFEST_TOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_MANIFEST_TOOL="mt"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_MANIFEST_TOOL=$ac_cv_prog_ac_ct_MANIFEST_TOOL
+if test -n "$ac_ct_MANIFEST_TOOL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_MANIFEST_TOOL" >&5
+$as_echo "$ac_ct_MANIFEST_TOOL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_MANIFEST_TOOL" = x; then
+ MANIFEST_TOOL=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ MANIFEST_TOOL=$ac_ct_MANIFEST_TOOL
+ fi
+else
+ MANIFEST_TOOL="$ac_cv_prog_MANIFEST_TOOL"
+fi
+
+test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $MANIFEST_TOOL is a manifest tool" >&5
+$as_echo_n "checking if $MANIFEST_TOOL is a manifest tool... " >&6; }
+if ${lt_cv_path_mainfest_tool+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_path_mainfest_tool=no
+ echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&5
+ $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out
+ cat conftest.err >&5
+ if $GREP 'Manifest Tool' conftest.out > /dev/null; then
+ lt_cv_path_mainfest_tool=yes
+ fi
+ rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_mainfest_tool" >&5
+$as_echo "$lt_cv_path_mainfest_tool" >&6; }
+if test "x$lt_cv_path_mainfest_tool" != xyes; then
+ MANIFEST_TOOL=:
+fi
+
+
+
+
+
case $host_os in
rhapsody* | darwin*)
@@ -6179,7 +6957,7 @@
set dummy ${ac_tool_prefix}dsymutil; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_DSYMUTIL+set}" = set; then :
+if ${ac_cv_prog_DSYMUTIL+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$DSYMUTIL"; then
@@ -6219,7 +6997,7 @@
set dummy dsymutil; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_DSYMUTIL+set}" = set; then :
+if ${ac_cv_prog_ac_ct_DSYMUTIL+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_DSYMUTIL"; then
@@ -6271,7 +7049,7 @@
set dummy ${ac_tool_prefix}nmedit; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_NMEDIT+set}" = set; then :
+if ${ac_cv_prog_NMEDIT+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$NMEDIT"; then
@@ -6311,7 +7089,7 @@
set dummy nmedit; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_NMEDIT+set}" = set; then :
+if ${ac_cv_prog_ac_ct_NMEDIT+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_NMEDIT"; then
@@ -6363,7 +7141,7 @@
set dummy ${ac_tool_prefix}lipo; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_LIPO+set}" = set; then :
+if ${ac_cv_prog_LIPO+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$LIPO"; then
@@ -6403,7 +7181,7 @@
set dummy lipo; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_LIPO+set}" = set; then :
+if ${ac_cv_prog_ac_ct_LIPO+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_LIPO"; then
@@ -6455,7 +7233,7 @@
set dummy ${ac_tool_prefix}otool; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_OTOOL+set}" = set; then :
+if ${ac_cv_prog_OTOOL+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$OTOOL"; then
@@ -6495,7 +7273,7 @@
set dummy otool; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_OTOOL+set}" = set; then :
+if ${ac_cv_prog_ac_ct_OTOOL+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_OTOOL"; then
@@ -6547,7 +7325,7 @@
set dummy ${ac_tool_prefix}otool64; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_OTOOL64+set}" = set; then :
+if ${ac_cv_prog_OTOOL64+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$OTOOL64"; then
@@ -6587,7 +7365,7 @@
set dummy otool64; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_OTOOL64+set}" = set; then :
+if ${ac_cv_prog_ac_ct_OTOOL64+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_OTOOL64"; then
@@ -6662,7 +7440,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -single_module linker flag" >&5
$as_echo_n "checking for -single_module linker flag... " >&6; }
-if test "${lt_cv_apple_cc_single_mod+set}" = set; then :
+if ${lt_cv_apple_cc_single_mod+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_apple_cc_single_mod=no
@@ -6678,7 +7456,13 @@
$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
-dynamiclib -Wl,-single_module conftest.c 2>conftest.err
_lt_result=$?
- if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+ # If there is a non-empty error log, and "single_module"
+ # appears in it, assume the flag caused a linker warning
+ if test -s conftest.err && $GREP single_module conftest.err; then
+ cat conftest.err >&5
+ # Otherwise, if the output was created with a 0 exit code from
+ # the compiler, it worked.
+ elif test -f libconftest.dylib && test $_lt_result -eq 0; then
lt_cv_apple_cc_single_mod=yes
else
cat conftest.err >&5
@@ -6689,9 +7473,10 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_apple_cc_single_mod" >&5
$as_echo "$lt_cv_apple_cc_single_mod" >&6; }
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -exported_symbols_list linker flag" >&5
$as_echo_n "checking for -exported_symbols_list linker flag... " >&6; }
-if test "${lt_cv_ld_exported_symbols_list+set}" = set; then :
+if ${lt_cv_ld_exported_symbols_list+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_ld_exported_symbols_list=no
@@ -6721,9 +7506,10 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_exported_symbols_list" >&5
$as_echo "$lt_cv_ld_exported_symbols_list" >&6; }
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -force_load linker flag" >&5
$as_echo_n "checking for -force_load linker flag... " >&6; }
-if test "${lt_cv_ld_force_load+set}" = set; then :
+if ${lt_cv_ld_force_load+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_ld_force_load=no
@@ -6742,7 +7528,9 @@
echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&5
$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
_lt_result=$?
- if test -f conftest && test ! -s conftest.err && test $_lt_result = 0 && $GREP forced_load conftest 2>&1 >/dev/null; then
+ if test -s conftest.err && $GREP force_load conftest.err; then
+ cat conftest.err >&5
+ elif test -f conftest && test $_lt_result -eq 0 && $GREP forced_load conftest >/dev/null 2>&1 ; then
lt_cv_ld_force_load=yes
else
cat conftest.err >&5
@@ -6791,7 +7579,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
$as_echo_n "checking for ANSI C header files... " >&6; }
-if test "${ac_cv_header_stdc+set}" = set; then :
+if ${ac_cv_header_stdc+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -6908,8 +7696,7 @@
as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
"
-eval as_val=\$$as_ac_Header
- if test "x$as_val" = x""yes; then :
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
cat >>confdefs.h <<_ACEOF
#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
_ACEOF
@@ -6923,7 +7710,7 @@
do :
ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default
"
-if test "x$ac_cv_header_dlfcn_h" = x""yes; then :
+if test "x$ac_cv_header_dlfcn_h" = xyes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_DLFCN_H 1
_ACEOF
@@ -6946,7 +7733,7 @@
set dummy ${ac_tool_prefix}as; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_AS+set}" = set; then :
+if ${ac_cv_prog_AS+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$AS"; then
@@ -6986,7 +7773,7 @@
set dummy as; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_AS+set}" = set; then :
+if ${ac_cv_prog_ac_ct_AS+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_AS"; then
@@ -7038,7 +7825,7 @@
set dummy ${ac_tool_prefix}dlltool; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_DLLTOOL+set}" = set; then :
+if ${ac_cv_prog_DLLTOOL+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$DLLTOOL"; then
@@ -7078,7 +7865,7 @@
set dummy dlltool; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_DLLTOOL+set}" = set; then :
+if ${ac_cv_prog_ac_ct_DLLTOOL+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_DLLTOOL"; then
@@ -7130,7 +7917,7 @@
set dummy ${ac_tool_prefix}objdump; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_OBJDUMP+set}" = set; then :
+if ${ac_cv_prog_OBJDUMP+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$OBJDUMP"; then
@@ -7170,7 +7957,7 @@
set dummy objdump; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_OBJDUMP+set}" = set; then :
+if ${ac_cv_prog_ac_ct_OBJDUMP+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_OBJDUMP"; then
@@ -7309,7 +8096,22 @@
# Check whether --with-pic was given.
if test "${with_pic+set}" = set; then :
- withval=$with_pic; pic_mode="$withval"
+ withval=$with_pic; lt_p=${PACKAGE-default}
+ case $withval in
+ yes|no) pic_mode=$withval ;;
+ *)
+ pic_mode=default
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for lt_pkg in $withval; do
+ IFS="$lt_save_ifs"
+ if test "X$lt_pkg" = "X$lt_p"; then
+ pic_mode=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac
else
pic_mode=default
fi
@@ -7387,6 +8189,10 @@
+
+
+
+
test -z "$LN_S" && LN_S="ln -s"
@@ -7408,7 +8214,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for objdir" >&5
$as_echo_n "checking for objdir... " >&6; }
-if test "${lt_cv_objdir+set}" = set; then :
+if ${lt_cv_objdir+:} false; then :
$as_echo_n "(cached) " >&6
else
rm -f .libs 2>/dev/null
@@ -7486,7 +8292,7 @@
if test "$file_magic_cmd" = '$MAGIC_CMD'; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${ac_tool_prefix}file" >&5
$as_echo_n "checking for ${ac_tool_prefix}file... " >&6; }
-if test "${lt_cv_path_MAGIC_CMD+set}" = set; then :
+if ${lt_cv_path_MAGIC_CMD+:} false; then :
$as_echo_n "(cached) " >&6
else
case $MAGIC_CMD in
@@ -7552,7 +8358,7 @@
if test -n "$ac_tool_prefix"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for file" >&5
$as_echo_n "checking for file... " >&6; }
-if test "${lt_cv_path_MAGIC_CMD+set}" = set; then :
+if ${lt_cv_path_MAGIC_CMD+:} false; then :
$as_echo_n "(cached) " >&6
else
case $MAGIC_CMD in
@@ -7690,7 +8496,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -fno-rtti -fno-exceptions" >&5
$as_echo_n "checking if $compiler supports -fno-rtti -fno-exceptions... " >&6; }
-if test "${lt_cv_prog_compiler_rtti_exceptions+set}" = set; then :
+if ${lt_cv_prog_compiler_rtti_exceptions+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_prog_compiler_rtti_exceptions=no
@@ -7743,8 +8549,6 @@
lt_prog_compiler_pic=
lt_prog_compiler_static=
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5
-$as_echo_n "checking for $compiler option to produce PIC... " >&6; }
if test "$GCC" = yes; then
lt_prog_compiler_wl='-Wl,'
@@ -7844,7 +8648,9 @@
case $cc_basename in
nvcc*) # Cuda Compiler Driver 2.2
lt_prog_compiler_wl='-Xlinker '
- lt_prog_compiler_pic='-Xcompiler -fPIC'
+ if test -n "$lt_prog_compiler_pic"; then
+ lt_prog_compiler_pic="-Xcompiler $lt_prog_compiler_pic"
+ fi
;;
esac
else
@@ -7909,6 +8715,12 @@
lt_prog_compiler_pic='--shared'
lt_prog_compiler_static='--static'
;;
+ nagfor*)
+ # NAG Fortran compiler
+ lt_prog_compiler_wl='-Wl,-Wl,,'
+ lt_prog_compiler_pic='-PIC'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
# Portland Group compilers (*not* the Pentium gcc compiler,
# which looks to be a dead project)
@@ -7929,18 +8741,33 @@
;;
*)
case `$CC -V 2>&1 | sed 5q` in
- *Sun\ F* | *Sun*Fortran*)
+ *Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [1-7].* | *Sun*Fortran*\ 8.[0-3]*)
# Sun Fortran 8.3 passes all unrecognized flags to the linker
lt_prog_compiler_pic='-KPIC'
lt_prog_compiler_static='-Bstatic'
lt_prog_compiler_wl=''
;;
+ *Sun\ F* | *Sun*Fortran*)
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ lt_prog_compiler_wl='-Qoption ld '
+ ;;
*Sun\ C*)
# Sun C 5.9
lt_prog_compiler_pic='-KPIC'
lt_prog_compiler_static='-Bstatic'
lt_prog_compiler_wl='-Wl,'
;;
+ *Intel*\ [CF]*Compiler*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-fPIC'
+ lt_prog_compiler_static='-static'
+ ;;
+ *Portland\ Group*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-fpic'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
esac
;;
esac
@@ -8028,13 +8855,17 @@
lt_prog_compiler_pic="$lt_prog_compiler_pic -DPIC"
;;
esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_prog_compiler_pic" >&5
-$as_echo "$lt_prog_compiler_pic" >&6; }
-
-
-
-
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5
+$as_echo_n "checking for $compiler option to produce PIC... " >&6; }
+if ${lt_cv_prog_compiler_pic+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_pic=$lt_prog_compiler_pic
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic" >&5
+$as_echo "$lt_cv_prog_compiler_pic" >&6; }
+lt_prog_compiler_pic=$lt_cv_prog_compiler_pic
#
# Check to make sure the PIC flag actually works.
@@ -8042,7 +8873,7 @@
if test -n "$lt_prog_compiler_pic"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler PIC flag $lt_prog_compiler_pic works" >&5
$as_echo_n "checking if $compiler PIC flag $lt_prog_compiler_pic works... " >&6; }
-if test "${lt_cv_prog_compiler_pic_works+set}" = set; then :
+if ${lt_cv_prog_compiler_pic_works+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_prog_compiler_pic_works=no
@@ -8095,13 +8926,18 @@
+
+
+
+
+
#
# Check to make sure the static flag actually works.
#
wl=$lt_prog_compiler_wl eval lt_tmp_static_flag=\"$lt_prog_compiler_static\"
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler static flag $lt_tmp_static_flag works" >&5
$as_echo_n "checking if $compiler static flag $lt_tmp_static_flag works... " >&6; }
-if test "${lt_cv_prog_compiler_static_works+set}" = set; then :
+if ${lt_cv_prog_compiler_static_works+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_prog_compiler_static_works=no
@@ -8144,7 +8980,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
-if test "${lt_cv_prog_compiler_c_o+set}" = set; then :
+if ${lt_cv_prog_compiler_c_o+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_prog_compiler_c_o=no
@@ -8199,7 +9035,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
-if test "${lt_cv_prog_compiler_c_o+set}" = set; then :
+if ${lt_cv_prog_compiler_c_o+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_prog_compiler_c_o=no
@@ -8293,7 +9129,6 @@
hardcode_direct=no
hardcode_direct_absolute=no
hardcode_libdir_flag_spec=
- hardcode_libdir_flag_spec_ld=
hardcode_libdir_separator=
hardcode_minus_L=no
hardcode_shlibpath_var=unsupported
@@ -8445,7 +9280,8 @@
allow_undefined_flag=unsupported
always_export_symbols=no
enable_shared_with_static_runtimes=yes
- export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1 DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols'
+ export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1 DATA/;s/^.*[ ]__nm__\([^ ]*\)[ ][^ ]*/\1 DATA/;/^I[ ]/d;/^[AITW][ ]/s/.* //'\'' | sort | uniq > $export_symbols'
+ exclude_expsyms='[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname'
if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
@@ -8493,7 +9329,7 @@
if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
&& test "$tmp_diet" = no
then
- tmp_addflag=
+ tmp_addflag=' $pic_flag'
tmp_sharedflag='-shared'
case $cc_basename,$host_cpu in
pgcc*) # Portland Group C compiler
@@ -8542,8 +9378,7 @@
xlf* | bgf* | bgxlf* | mpixlf*)
# IBM XL Fortran 10.1 on PPC cannot create shared libs itself
whole_archive_flag_spec='--whole-archive$convenience --no-whole-archive'
- hardcode_libdir_flag_spec=
- hardcode_libdir_flag_spec_ld='-rpath $libdir'
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib'
if test "x$supports_anon_versioning" = xyes; then
archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
@@ -8563,8 +9398,8 @@
archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
wlarc=
else
- archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
fi
;;
@@ -8582,8 +9417,8 @@
_LT_EOF
elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
- archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
else
ld_shlibs=no
fi
@@ -8629,8 +9464,8 @@
*)
if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
- archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
else
ld_shlibs=no
fi
@@ -8760,7 +9595,13 @@
allow_undefined_flag='-berok'
# Determine the default libpath from the value encoded in an
# empty executable.
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ if test "${lt_cv_aix_libpath+set}" = set; then
+ aix_libpath=$lt_cv_aix_libpath
+else
+ if ${lt_cv_aix_libpath_+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
@@ -8773,22 +9614,29 @@
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
-lt_aix_libpath_sed='
- /Import File Strings/,/^$/ {
- /^0/ {
- s/^0 *\(.*\)$/\1/
- p
- }
- }'
-aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
-# Check for a 64-bit object if we didn't find anything.
-if test -z "$aix_libpath"; then
- aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
-fi
+ lt_aix_libpath_sed='
+ /Import File Strings/,/^$/ {
+ /^0/ {
+ s/^0 *\([^ ]*\) *$/\1/
+ p
+ }
+ }'
+ lt_cv_aix_libpath_=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+ # Check for a 64-bit object if we didn't find anything.
+ if test -z "$lt_cv_aix_libpath_"; then
+ lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+ fi
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
-if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+ if test -z "$lt_cv_aix_libpath_"; then
+ lt_cv_aix_libpath_="/usr/lib:/lib"
+ fi
+
+fi
+
+ aix_libpath=$lt_cv_aix_libpath_
+fi
hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
archive_expsym_cmds='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
@@ -8800,7 +9648,13 @@
else
# Determine the default libpath from the value encoded in an
# empty executable.
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ if test "${lt_cv_aix_libpath+set}" = set; then
+ aix_libpath=$lt_cv_aix_libpath
+else
+ if ${lt_cv_aix_libpath_+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
@@ -8813,22 +9667,29 @@
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
-lt_aix_libpath_sed='
- /Import File Strings/,/^$/ {
- /^0/ {
- s/^0 *\(.*\)$/\1/
- p
- }
- }'
-aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
-# Check for a 64-bit object if we didn't find anything.
-if test -z "$aix_libpath"; then
- aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
-fi
+ lt_aix_libpath_sed='
+ /Import File Strings/,/^$/ {
+ /^0/ {
+ s/^0 *\([^ ]*\) *$/\1/
+ p
+ }
+ }'
+ lt_cv_aix_libpath_=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+ # Check for a 64-bit object if we didn't find anything.
+ if test -z "$lt_cv_aix_libpath_"; then
+ lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+ fi
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
-if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+ if test -z "$lt_cv_aix_libpath_"; then
+ lt_cv_aix_libpath_="/usr/lib:/lib"
+ fi
+
+fi
+
+ aix_libpath=$lt_cv_aix_libpath_
+fi
hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
# Warning - without using the other run time loading flags,
@@ -8873,20 +9734,64 @@
# Microsoft Visual C++.
# hardcode_libdir_flag_spec is actually meaningless, as there is
# no search path for DLLs.
- hardcode_libdir_flag_spec=' '
- allow_undefined_flag=unsupported
- # Tell ltmain to make .lib files, not .a files.
- libext=lib
- # Tell ltmain to make .dll files, not .so files.
- shrext_cmds=".dll"
- # FIXME: Setting linknames here is a bad hack.
- archive_cmds='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
- # The linker will automatically build a .lib file if we build a DLL.
- old_archive_from_new_cmds='true'
- # FIXME: Should let the user specify the lib program.
- old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs'
- fix_srcfile_path='`cygpath -w "$srcfile"`'
- enable_shared_with_static_runtimes=yes
+ case $cc_basename in
+ cl*)
+ # Native MSVC
+ hardcode_libdir_flag_spec=' '
+ allow_undefined_flag=unsupported
+ always_export_symbols=yes
+ file_list_spec='@'
+ # Tell ltmain to make .lib files, not .a files.
+ libext=lib
+ # Tell ltmain to make .dll files, not .so files.
+ shrext_cmds=".dll"
+ # FIXME: Setting linknames here is a bad hack.
+ archive_cmds='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-dll~linknames='
+ archive_expsym_cmds='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ sed -n -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' -e '1\\\!p' < $export_symbols > $output_objdir/$soname.exp;
+ else
+ sed -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' < $export_symbols > $output_objdir/$soname.exp;
+ fi~
+ $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
+ linknames='
+ # The linker will not automatically build a static lib if we build a DLL.
+ # _LT_TAGVAR(old_archive_from_new_cmds, )='true'
+ enable_shared_with_static_runtimes=yes
+ exclude_expsyms='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
+ export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1,DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols'
+ # Don't use ranlib
+ old_postinstall_cmds='chmod 644 $oldlib'
+ postlink_cmds='lt_outputfile="@OUTPUT@"~
+ lt_tool_outputfile="@TOOL_OUTPUT@"~
+ case $lt_outputfile in
+ *.exe|*.EXE) ;;
+ *)
+ lt_outputfile="$lt_outputfile.exe"
+ lt_tool_outputfile="$lt_tool_outputfile.exe"
+ ;;
+ esac~
+ if test "$MANIFEST_TOOL" != ":" && test -f "$lt_outputfile.manifest"; then
+ $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1;
+ $RM "$lt_outputfile.manifest";
+ fi'
+ ;;
+ *)
+ # Assume MSVC wrapper
+ hardcode_libdir_flag_spec=' '
+ allow_undefined_flag=unsupported
+ # Tell ltmain to make .lib files, not .a files.
+ libext=lib
+ # Tell ltmain to make .dll files, not .so files.
+ shrext_cmds=".dll"
+ # FIXME: Setting linknames here is a bad hack.
+ archive_cmds='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
+ # The linker will automatically build a .lib file if we build a DLL.
+ old_archive_from_new_cmds='true'
+ # FIXME: Should let the user specify the lib program.
+ old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs'
+ enable_shared_with_static_runtimes=yes
+ ;;
+ esac
;;
darwin* | rhapsody*)
@@ -8898,6 +9803,7 @@
hardcode_shlibpath_var=unsupported
if test "$lt_cv_ld_force_load" = "yes"; then
whole_archive_flag_spec='`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`'
+
else
whole_archive_flag_spec=''
fi
@@ -8926,10 +9832,6 @@
hardcode_shlibpath_var=no
;;
- freebsd1*)
- ld_shlibs=no
- ;;
-
# FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
# support. Future versions do this automatically, but an explicit c++rt0.o
# does not break anything, and helps significantly (at the cost of a little
@@ -8942,7 +9844,7 @@
;;
# Unfortunately, older versions of FreeBSD 2 do not have this feature.
- freebsd2*)
+ freebsd2.*)
archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
hardcode_direct=yes
hardcode_minus_L=yes
@@ -8951,7 +9853,7 @@
# FreeBSD 3 and greater uses gcc -shared to do shared libraries.
freebsd* | dragonfly*)
- archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+ archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
hardcode_libdir_flag_spec='-R$libdir'
hardcode_direct=yes
hardcode_shlibpath_var=no
@@ -8959,7 +9861,7 @@
hpux9*)
if test "$GCC" = yes; then
- archive_cmds='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ archive_cmds='$RM $output_objdir/$soname~$CC -shared $pic_flag ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
else
archive_cmds='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
fi
@@ -8975,13 +9877,12 @@
hpux10*)
if test "$GCC" = yes && test "$with_gnu_ld" = no; then
- archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ archive_cmds='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
else
archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
fi
if test "$with_gnu_ld" = no; then
hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
- hardcode_libdir_flag_spec_ld='+b $libdir'
hardcode_libdir_separator=:
hardcode_direct=yes
hardcode_direct_absolute=yes
@@ -8999,10 +9900,10 @@
archive_cmds='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
;;
ia64*)
- archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ archive_cmds='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
;;
*)
- archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ archive_cmds='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
;;
esac
else
@@ -9019,7 +9920,7 @@
# (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does)
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC understands -b" >&5
$as_echo_n "checking if $CC understands -b... " >&6; }
-if test "${lt_cv_prog_compiler__b+set}" = set; then :
+if ${lt_cv_prog_compiler__b+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_prog_compiler__b=no
@@ -9081,23 +9982,36 @@
irix5* | irix6* | nonstopux*)
if test "$GCC" = yes; then
- archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
# Try to use the -exported_symbol ld option, if it does not
# work, assume that -exports_file does not work either and
# implicitly export all symbols.
- save_LDFLAGS="$LDFLAGS"
- LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ # This should be the same for all languages, so no per-tag cache variable.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $host_os linker accepts -exported_symbol" >&5
+$as_echo_n "checking whether the $host_os linker accepts -exported_symbol... " >&6; }
+if ${lt_cv_irix_exported_symbol+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
-int foo(void) {}
+int foo (void) { return 0; }
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
- archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
-
+ lt_cv_irix_exported_symbol=yes
+else
+ lt_cv_irix_exported_symbol=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
- LDFLAGS="$save_LDFLAGS"
+ LDFLAGS="$save_LDFLAGS"
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_irix_exported_symbol" >&5
+$as_echo "$lt_cv_irix_exported_symbol" >&6; }
+ if test "$lt_cv_irix_exported_symbol" = yes; then
+ archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+ fi
else
archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
@@ -9182,7 +10096,7 @@
osf4* | osf5*) # as osf3* with the addition of -msym flag
if test "$GCC" = yes; then
allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
- archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ archive_cmds='$CC -shared${allow_undefined_flag} $pic_flag $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
else
allow_undefined_flag=' -expect_unresolved \*'
@@ -9201,9 +10115,9 @@
no_undefined_flag=' -z defs'
if test "$GCC" = yes; then
wlarc='${wl}'
- archive_cmds='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_cmds='$CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ $CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
else
case `$CC -V 2>&1` in
*"Compilers 5.0"*)
@@ -9391,7 +10305,7 @@
# to ld, don't add -lc before -lgcc.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -lc should be explicitly linked in" >&5
$as_echo_n "checking whether -lc should be explicitly linked in... " >&6; }
-if test "${lt_cv_archive_cmds_need_lc+set}" = set; then :
+if ${lt_cv_archive_cmds_need_lc+:} false; then :
$as_echo_n "(cached) " >&6
else
$RM conftest*
@@ -9592,11 +10506,6 @@
-
-
-
-
-
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dynamic linker characteristics" >&5
$as_echo_n "checking dynamic linker characteristics... " >&6; }
@@ -9686,7 +10595,7 @@
case $host_os in
aix3*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
shlibpath_var=LIBPATH
@@ -9695,7 +10604,7 @@
;;
aix[4-9]*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
hardcode_into_libs=yes
@@ -9760,7 +10669,7 @@
;;
bsdi[45]*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
soname_spec='${libname}${release}${shared_ext}$major'
@@ -9779,8 +10688,9 @@
need_version=no
need_lib_prefix=no
- case $GCC,$host_os in
- yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+ case $GCC,$cc_basename in
+ yes,*)
+ # gcc
library_names_spec='$libname.dll.a'
# DLL is installed to $(libdir)/../bin by postinstall_cmds
postinstall_cmds='base_file=`basename \${file}`~
@@ -9813,13 +10723,71 @@
library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
;;
esac
+ dynamic_linker='Win32 ld.exe'
+ ;;
+
+ *,cl*)
+ # Native MSVC
+ libname_spec='$name'
+ soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+ library_names_spec='${libname}.dll.lib'
+
+ case $build_os in
+ mingw*)
+ sys_lib_search_path_spec=
+ lt_save_ifs=$IFS
+ IFS=';'
+ for lt_path in $LIB
+ do
+ IFS=$lt_save_ifs
+ # Let DOS variable expansion print the short 8.3 style file name.
+ lt_path=`cd "$lt_path" 2>/dev/null && cmd //C "for %i in (".") do @echo %~si"`
+ sys_lib_search_path_spec="$sys_lib_search_path_spec $lt_path"
+ done
+ IFS=$lt_save_ifs
+ # Convert to MSYS style.
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'`
+ ;;
+ cygwin*)
+ # Convert to unix form, then to dos form, then back to unix form
+ # but this time dos style (no spaces!) so that the unix form looks
+ # like /cygdrive/c/PROGRA~1:/cygdr...
+ sys_lib_search_path_spec=`cygpath --path --unix "$LIB"`
+ sys_lib_search_path_spec=`cygpath --path --dos "$sys_lib_search_path_spec" 2>/dev/null`
+ sys_lib_search_path_spec=`cygpath --path --unix "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ ;;
+ *)
+ sys_lib_search_path_spec="$LIB"
+ if $ECHO "$sys_lib_search_path_spec" | $GREP ';[c-zC-Z]:/' >/dev/null; then
+ # It is most probably a Windows format PATH.
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ # FIXME: find the short name or the path components, as spaces are
+ # common. (e.g. "Program Files" -> "PROGRA~1")
+ ;;
+ esac
+
+ # DLL is installed to $(libdir)/../bin by postinstall_cmds
+ postinstall_cmds='base_file=`basename \${file}`~
+ dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+ dldir=$destdir/`dirname \$dlpath`~
+ test -d \$dldir || mkdir -p \$dldir~
+ $install_prog $dir/$dlname \$dldir/$dlname'
+ postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+ dlpath=$dir/\$dldll~
+ $RM \$dlpath'
+ shlibpath_overrides_runpath=yes
+ dynamic_linker='Win32 link.exe'
;;
*)
+ # Assume MSVC wrapper
library_names_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext} $libname.lib'
+ dynamic_linker='Win32 ld.exe'
;;
esac
- dynamic_linker='Win32 ld.exe'
# FIXME: first we should search . and the directory the executable is in
shlibpath_var=PATH
;;
@@ -9840,7 +10808,7 @@
;;
dgux*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
@@ -9848,10 +10816,6 @@
shlibpath_var=LD_LIBRARY_PATH
;;
-freebsd1*)
- dynamic_linker=no
- ;;
-
freebsd* | dragonfly*)
# DragonFly does not have aout. When/if they implement a new
# versioning mechanism, adjust this.
@@ -9859,7 +10823,7 @@
objformat=`/usr/bin/objformat`
else
case $host_os in
- freebsd[123]*) objformat=aout ;;
+ freebsd[23].*) objformat=aout ;;
*) objformat=elf ;;
esac
fi
@@ -9877,7 +10841,7 @@
esac
shlibpath_var=LD_LIBRARY_PATH
case $host_os in
- freebsd2*)
+ freebsd2.*)
shlibpath_overrides_runpath=yes
;;
freebsd3.[01]* | freebsdelf3.[01]*)
@@ -9897,17 +10861,18 @@
;;
gnu*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
soname_spec='${libname}${release}${shared_ext}$major'
shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
hardcode_into_libs=yes
;;
haiku*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
dynamic_linker="$host_os runtime_loader"
@@ -9968,7 +10933,7 @@
;;
interix[3-9]*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
@@ -9984,7 +10949,7 @@
nonstopux*) version_type=nonstopux ;;
*)
if test "$lt_cv_prog_gnu_ld" = yes; then
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
else
version_type=irix
fi ;;
@@ -10021,9 +10986,9 @@
dynamic_linker=no
;;
-# This must be Linux ELF.
+# This must be glibc/ELF.
linux* | k*bsd*-gnu | kopensolaris*-gnu)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
@@ -10033,7 +10998,7 @@
shlibpath_overrides_runpath=no
# Some binutils ld are patched to set DT_RUNPATH
- if test "${lt_cv_shlibpath_overrides_runpath+set}" = set; then :
+ if ${lt_cv_shlibpath_overrides_runpath+:} false; then :
$as_echo_n "(cached) " >&6
else
lt_cv_shlibpath_overrides_runpath=no
@@ -10105,7 +11070,7 @@
;;
newsos6)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
shlibpath_var=LD_LIBRARY_PATH
shlibpath_overrides_runpath=yes
@@ -10174,7 +11139,7 @@
;;
solaris*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
@@ -10199,7 +11164,7 @@
;;
sysv4 | sysv4.3*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
soname_spec='${libname}${release}${shared_ext}$major'
shlibpath_var=LD_LIBRARY_PATH
@@ -10223,7 +11188,7 @@
sysv4*MP*)
if test -d /usr/nec ;then
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
soname_spec='$libname${shared_ext}.$major'
shlibpath_var=LD_LIBRARY_PATH
@@ -10254,7 +11219,7 @@
tpf*)
# TPF is a cross-target only. Preferred cross-host = GNU/Linux.
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
need_lib_prefix=no
need_version=no
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
@@ -10264,7 +11229,7 @@
;;
uts4*)
- version_type=linux
+ version_type=linux # correct to gnu/linux during the next big refactor
library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
soname_spec='${libname}${release}${shared_ext}$major'
shlibpath_var=LD_LIBRARY_PATH
@@ -10453,7 +11418,7 @@
# if libdl is installed we need to link against it
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
$as_echo_n "checking for dlopen in -ldl... " >&6; }
-if test "${ac_cv_lib_dl_dlopen+set}" = set; then :
+if ${ac_cv_lib_dl_dlopen+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
@@ -10487,7 +11452,7 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
-if test "x$ac_cv_lib_dl_dlopen" = x""yes; then :
+if test "x$ac_cv_lib_dl_dlopen" = xyes; then :
lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
else
@@ -10501,12 +11466,12 @@
*)
ac_fn_c_check_func "$LINENO" "shl_load" "ac_cv_func_shl_load"
-if test "x$ac_cv_func_shl_load" = x""yes; then :
+if test "x$ac_cv_func_shl_load" = xyes; then :
lt_cv_dlopen="shl_load"
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5
$as_echo_n "checking for shl_load in -ldld... " >&6; }
-if test "${ac_cv_lib_dld_shl_load+set}" = set; then :
+if ${ac_cv_lib_dld_shl_load+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
@@ -10540,16 +11505,16 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5
$as_echo "$ac_cv_lib_dld_shl_load" >&6; }
-if test "x$ac_cv_lib_dld_shl_load" = x""yes; then :
+if test "x$ac_cv_lib_dld_shl_load" = xyes; then :
lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"
else
ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen"
-if test "x$ac_cv_func_dlopen" = x""yes; then :
+if test "x$ac_cv_func_dlopen" = xyes; then :
lt_cv_dlopen="dlopen"
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
$as_echo_n "checking for dlopen in -ldl... " >&6; }
-if test "${ac_cv_lib_dl_dlopen+set}" = set; then :
+if ${ac_cv_lib_dl_dlopen+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
@@ -10583,12 +11548,12 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
-if test "x$ac_cv_lib_dl_dlopen" = x""yes; then :
+if test "x$ac_cv_lib_dl_dlopen" = xyes; then :
lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lsvld" >&5
$as_echo_n "checking for dlopen in -lsvld... " >&6; }
-if test "${ac_cv_lib_svld_dlopen+set}" = set; then :
+if ${ac_cv_lib_svld_dlopen+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
@@ -10622,12 +11587,12 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_svld_dlopen" >&5
$as_echo "$ac_cv_lib_svld_dlopen" >&6; }
-if test "x$ac_cv_lib_svld_dlopen" = x""yes; then :
+if test "x$ac_cv_lib_svld_dlopen" = xyes; then :
lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for dld_link in -ldld" >&5
$as_echo_n "checking for dld_link in -ldld... " >&6; }
-if test "${ac_cv_lib_dld_dld_link+set}" = set; then :
+if ${ac_cv_lib_dld_dld_link+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
@@ -10661,7 +11626,7 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_dld_link" >&5
$as_echo "$ac_cv_lib_dld_dld_link" >&6; }
-if test "x$ac_cv_lib_dld_dld_link" = x""yes; then :
+if test "x$ac_cv_lib_dld_dld_link" = xyes; then :
lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"
fi
@@ -10702,7 +11667,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a program can dlopen itself" >&5
$as_echo_n "checking whether a program can dlopen itself... " >&6; }
-if test "${lt_cv_dlopen_self+set}" = set; then :
+if ${lt_cv_dlopen_self+:} false; then :
$as_echo_n "(cached) " >&6
else
if test "$cross_compiling" = yes; then :
@@ -10755,10 +11720,10 @@
/* When -fvisbility=hidden is used, assume the code has been annotated
correspondingly for the symbols needed. */
#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
-void fnord () __attribute__((visibility("default")));
+int fnord () __attribute__((visibility("default")));
#endif
-void fnord () { int i=42; }
+int fnord () { return 42; }
int main ()
{
void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
@@ -10808,7 +11773,7 @@
wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a statically linked program can dlopen itself" >&5
$as_echo_n "checking whether a statically linked program can dlopen itself... " >&6; }
-if test "${lt_cv_dlopen_self_static+set}" = set; then :
+if ${lt_cv_dlopen_self_static+:} false; then :
$as_echo_n "(cached) " >&6
else
if test "$cross_compiling" = yes; then :
@@ -10861,10 +11826,10 @@
/* When -fvisbility=hidden is used, assume the code has been annotated
correspondingly for the symbols needed. */
#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
-void fnord () __attribute__((visibility("default")));
+int fnord () __attribute__((visibility("default")));
#endif
-void fnord () { int i=42; }
+int fnord () { return 42; }
int main ()
{
void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
@@ -11046,6 +12011,8 @@
+
+
ac_config_commands="$ac_config_commands libtool"
@@ -11055,10 +12022,50 @@
+# On Solaris 10 and 12 CPP gets set to cc -E, however this still
+# does some input parsing. We need strict ANSI-C style tokenization,
+# check this:
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a C preprocessor that does not parse its input" >&5
+$as_echo_n "checking for a C preprocessor that does not parse its input... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+1.5.0 16BIT
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ DFNCPP="$CPP"
+else
+ DFNCPP=""
+ sav_CPP="$CPP"
+ for CPP in "${CC-cc} -E" "${CC-cc} -E -traditional-cpp" "/lib/cpp" "cpp"; do
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+1.5.0 16BIT
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ DFNCPP="$CPP"
+ break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+ done
+ CPP="$sav_CPP"
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+if test -n "$DFNCPP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DFNCPP" >&5
+$as_echo "$DFNCPP" >&6; }
+
+else
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 1 "not found
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+
# Checks for header files.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
$as_echo_n "checking for ANSI C header files... " >&6; }
-if test "${ac_cv_header_stdc+set}" = set; then :
+if ${ac_cv_header_stdc+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -11172,8 +12179,7 @@
do :
as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-eval as_val=\$$as_ac_Header
- if test "x$as_val" = x""yes; then :
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
cat >>confdefs.h <<_ACEOF
#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
_ACEOF
@@ -11186,7 +12192,7 @@
# Checks for typedefs, structures, and compiler characteristics.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5
$as_echo_n "checking for an ANSI C-conforming const... " >&6; }
-if test "${ac_cv_c_const+set}" = set; then :
+if ${ac_cv_c_const+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -11265,7 +12271,7 @@
fi
ac_fn_c_check_type "$LINENO" "size_t" "ac_cv_type_size_t" "$ac_includes_default"
-if test "x$ac_cv_type_size_t" = x""yes; then :
+if test "x$ac_cv_type_size_t" = xyes; then :
else
@@ -11277,7 +12283,7 @@
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether struct tm is in sys/time.h or time.h" >&5
$as_echo_n "checking whether struct tm is in sys/time.h or time.h... " >&6; }
-if test "${ac_cv_struct_tm+set}" = set; then :
+if ${ac_cv_struct_tm+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -11310,11 +12316,57 @@
fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C/C++ restrict keyword" >&5
+$as_echo_n "checking for C/C++ restrict keyword... " >&6; }
+if ${ac_cv_c_restrict+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_cv_c_restrict=no
+ # The order here caters to the fact that C++ does not require restrict.
+ for ac_kw in __restrict __restrict__ _Restrict restrict; do
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+typedef int * int_ptr;
+ int foo (int_ptr $ac_kw ip) {
+ return ip[0];
+ }
+int
+main ()
+{
+int s[1];
+ int * $ac_kw t = s;
+ t[0] = 0;
+ return foo(t)
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_c_restrict=$ac_kw
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ test "$ac_cv_c_restrict" != no && break
+ done
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_restrict" >&5
+$as_echo "$ac_cv_c_restrict" >&6; }
+
+ case $ac_cv_c_restrict in
+ restrict) ;;
+ no) $as_echo "#define restrict /**/" >>confdefs.h
+ ;;
+ *) cat >>confdefs.h <<_ACEOF
+#define restrict $ac_cv_c_restrict
+_ACEOF
+ ;;
+ esac
+
# Checks for library functions.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working strtod" >&5
$as_echo_n "checking for working strtod... " >&6; }
-if test "${ac_cv_func_strtod+set}" = set; then :
+if ${ac_cv_func_strtod+:} false; then :
$as_echo_n "(cached) " >&6
else
if test "$cross_compiling" = yes; then :
@@ -11373,14 +12425,14 @@
esac
ac_fn_c_check_func "$LINENO" "pow" "ac_cv_func_pow"
-if test "x$ac_cv_func_pow" = x""yes; then :
+if test "x$ac_cv_func_pow" = xyes; then :
fi
if test $ac_cv_func_pow = no; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pow in -lm" >&5
$as_echo_n "checking for pow in -lm... " >&6; }
-if test "${ac_cv_lib_m_pow+set}" = set; then :
+if ${ac_cv_lib_m_pow+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
@@ -11414,7 +12466,7 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_pow" >&5
$as_echo "$ac_cv_lib_m_pow" >&6; }
-if test "x$ac_cv_lib_m_pow" = x""yes; then :
+if test "x$ac_cv_lib_m_pow" = xyes; then :
POW_LIB=-lm
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cannot find library containing definition of pow" >&5
@@ -11428,20 +12480,20 @@
for ac_func in memset
do :
ac_fn_c_check_func "$LINENO" "memset" "ac_cv_func_memset"
-if test "x$ac_cv_func_memset" = x""yes; then :
+if test "x$ac_cv_func_memset" = xyes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_MEMSET 1
_ACEOF
else
- as_fn_error "memset not found in libc" "$LINENO" 5
+ as_fn_error $? "memset not found in libc" "$LINENO" 5
fi
done
for ac_func in pow
do :
ac_fn_c_check_func "$LINENO" "pow" "ac_cv_func_pow"
-if test "x$ac_cv_func_pow" = x""yes; then :
+if test "x$ac_cv_func_pow" = xyes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_POW 1
_ACEOF
@@ -11449,7 +12501,7 @@
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pow in -lm" >&5
$as_echo_n "checking for pow in -lm... " >&6; }
-if test "${ac_cv_lib_m_pow+set}" = set; then :
+if ${ac_cv_lib_m_pow+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
@@ -11483,7 +12535,7 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_pow" >&5
$as_echo "$ac_cv_lib_m_pow" >&6; }
-if test "x$ac_cv_lib_m_pow" = x""yes; then :
+if test "x$ac_cv_lib_m_pow" = xyes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_LIBM 1
_ACEOF
@@ -11491,15 +12543,23 @@
LIBS="-lm $LIBS"
else
- as_fn_error "cannot find pow" "$LINENO" 5
+ as_fn_error $? "cannot find pow" "$LINENO" 5
fi
fi
done
+
+# Check whether --with-zlib-prefix was given.
+if test "${with_zlib_prefix+set}" = set; then :
+ withval=$with_zlib_prefix; ZPREFIX=${withval}
+else
+ ZPREFIX='z_'
+fi
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for zlibVersion in -lz" >&5
$as_echo_n "checking for zlibVersion in -lz... " >&6; }
-if test "${ac_cv_lib_z_zlibVersion+set}" = set; then :
+if ${ac_cv_lib_z_zlibVersion+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
@@ -11533,7 +12593,7 @@
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_zlibVersion" >&5
$as_echo "$ac_cv_lib_z_zlibVersion" >&6; }
-if test "x$ac_cv_lib_z_zlibVersion" = x""yes; then :
+if test "x$ac_cv_lib_z_zlibVersion" = xyes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_LIBZ 1
_ACEOF
@@ -11541,32 +12601,162 @@
LIBS="-lz $LIBS"
else
- as_fn_error "zlib not installed" "$LINENO" 5
+ as_ac_Lib=`$as_echo "ac_cv_lib_z_${ZPREFIX}zlibVersion" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${ZPREFIX}zlibVersion in -lz" >&5
+$as_echo_n "checking for ${ZPREFIX}zlibVersion in -lz... " >&6; }
+if eval \${$as_ac_Lib+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lz $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char ${ZPREFIX}zlibVersion ();
+int
+main ()
+{
+return ${ZPREFIX}zlibVersion ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ eval "$as_ac_Lib=yes"
+else
+ eval "$as_ac_Lib=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+eval ac_res=\$$as_ac_Lib
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_Lib"\" = x"yes"; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBZ 1
+_ACEOF
+
+ LIBS="-lz $LIBS"
+
+else
+ as_fn_error $? "zlib not installed" "$LINENO" 5
+fi
+
fi
-case $host_os in
- aix*)
- LIBPNG_DEFINES="-DPNG_CONFIGURE_LIBPNG -D_ALL_SOURCE";;
- *)
- LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG;;
-esac
+# The following is for pngvalid, to ensure it catches FP errors even on
+# platforms that don't enable FP exceptions, the function appears in the math
+# library (typically), it's not an error if it is not found.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for feenableexcept in -lm" >&5
+$as_echo_n "checking for feenableexcept in -lm... " >&6; }
+if ${ac_cv_lib_m_feenableexcept+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char feenableexcept ();
+int
+main ()
+{
+return feenableexcept ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_m_feenableexcept=yes
+else
+ ac_cv_lib_m_feenableexcept=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_feenableexcept" >&5
+$as_echo "$ac_cv_lib_m_feenableexcept" >&6; }
+if test "x$ac_cv_lib_m_feenableexcept" = xyes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
+
+ LIBS="-lm $LIBS"
+
+fi
+
+for ac_func in feenableexcept
+do :
+ ac_fn_c_check_func "$LINENO" "feenableexcept" "ac_cv_func_feenableexcept"
+if test "x$ac_cv_func_feenableexcept" = xyes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_FEENABLEEXCEPT 1
+_ACEOF
+
+fi
+done
+
+
+LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
LIBPNG_DEFINES=$LIBPNG_DEFINES
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if using Solaris linker" >&5
+$as_echo_n "checking if using Solaris linker... " >&6; }
+SLD=`$LD --version 2>&1 | grep Solaris`
+if test "$SLD"; then
+ have_solaris_ld=yes
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+ have_solaris_ld=no
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+ if test "$have_solaris_ld" = "yes"; then
+ HAVE_SOLARIS_LD_TRUE=
+ HAVE_SOLARIS_LD_FALSE='#'
+else
+ HAVE_SOLARIS_LD_TRUE='#'
+ HAVE_SOLARIS_LD_FALSE=
+fi
+
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if libraries can be versioned" >&5
$as_echo_n "checking if libraries can be versioned... " >&6; }
# Special case for PE/COFF platforms: ld reports
# support for version-script, but doesn't actually
# DO anything with it.
case $host in
-*cygwin* | *mingw32* )
+*cygwin* | *mingw32* | *interix* )
have_ld_version_script=no
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
;;
* )
-GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script`
+
+if test "$have_solaris_ld" = "yes"; then
+ GLD=`$LD --help < /dev/null 2>&1 | grep 'M mapfile'`
+else
+ GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script`
+fi
+
if test "$GLD"; then
have_ld_version_script=yes
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
@@ -11640,6 +12830,33 @@
+# Because GCC by default assembles code with an executable stack, even though it
+# compiles C code with a non-executable stack, it is necessary to do a fixup
+# here (this may by GCC specific)
+AM_CCASFLAGS=-Wa,--noexecstack
+
+
+# Check whether --enable-arm-neon was given.
+if test "${enable_arm_neon+set}" = set; then :
+ enableval=$enable_arm_neon; if test "${enableval}" = yes; then
+
+$as_echo "#define PNG_ARM_NEON 1" >>confdefs.h
+
+
+$as_echo "#define PNG_ALIGNED_MEMORY_SUPPORTED 1" >>confdefs.h
+
+ fi
+fi
+
+ if test "${enable_arm_neon:-no}" = yes; then
+ PNG_ARM_NEON_TRUE=
+ PNG_ARM_NEON_FALSE='#'
+else
+ PNG_ARM_NEON_TRUE='#'
+ PNG_ARM_NEON_FALSE=
+fi
+
+
# Config files, substituting as above
ac_config_files="$ac_config_files Makefile libpng.pc:libpng.pc.in"
@@ -11710,10 +12927,21 @@
:end' >>confcache
if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
if test -w "$cache_file"; then
- test "x$cache_file" != "x/dev/null" &&
+ if test "x$cache_file" != "x/dev/null"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
$as_echo "$as_me: updating cache $cache_file" >&6;}
- cat confcache >$cache_file
+ if test ! -f "$cache_file" || test -h "$cache_file"; then
+ cat confcache >"$cache_file"
+ else
+ case $cache_file in #(
+ */* | ?:*)
+ mv -f confcache "$cache_file"$$ &&
+ mv -f "$cache_file"$$ "$cache_file" ;; #(
+ *)
+ mv -f confcache "$cache_file" ;;
+ esac
+ fi
+ fi
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
@@ -11729,6 +12957,7 @@
ac_libobjs=
ac_ltlibobjs=
+U=
for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
# 1. Remove the extension, and $U if already installed.
ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
@@ -11752,23 +12981,35 @@
fi
if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then
- as_fn_error "conditional \"MAINTAINER_MODE\" was never defined.
+ as_fn_error $? "conditional \"MAINTAINER_MODE\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
if test -z "${AMDEP_TRUE}" && test -z "${AMDEP_FALSE}"; then
- as_fn_error "conditional \"AMDEP\" was never defined.
+ as_fn_error $? "conditional \"AMDEP\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then
- as_fn_error "conditional \"am__fastdepCC\" was never defined.
+ as_fn_error $? "conditional \"am__fastdepCC\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${am__fastdepCCAS_TRUE}" && test -z "${am__fastdepCCAS_FALSE}"; then
+ as_fn_error $? "conditional \"am__fastdepCCAS\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_SOLARIS_LD_TRUE}" && test -z "${HAVE_SOLARIS_LD_FALSE}"; then
+ as_fn_error $? "conditional \"HAVE_SOLARIS_LD\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
if test -z "${HAVE_LD_VERSION_SCRIPT_TRUE}" && test -z "${HAVE_LD_VERSION_SCRIPT_FALSE}"; then
- as_fn_error "conditional \"HAVE_LD_VERSION_SCRIPT\" was never defined.
+ as_fn_error $? "conditional \"HAVE_LD_VERSION_SCRIPT\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${PNG_ARM_NEON_TRUE}" && test -z "${PNG_ARM_NEON_FALSE}"; then
+ as_fn_error $? "conditional \"PNG_ARM_NEON\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
-: ${CONFIG_STATUS=./config.status}
+: "${CONFIG_STATUS=./config.status}"
ac_write_fail=0
ac_clean_files_save=$ac_clean_files
ac_clean_files="$ac_clean_files $CONFIG_STATUS"
@@ -11869,6 +13110,7 @@
IFS=" "" $as_nl"
# Find who we are. Look in the path if we contain no directory separator.
+as_myself=
case $0 in #((
*[\\/]* ) as_myself=$0 ;;
*) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -11914,19 +13156,19 @@
(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
-# as_fn_error ERROR [LINENO LOG_FD]
-# ---------------------------------
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
-# script with status $?, using 1 if that was 0.
+# script with STATUS, using 1 if that was 0.
as_fn_error ()
{
- as_status=$?; test $as_status -eq 0 && as_status=1
- if test "$3"; then
- as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
- $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+ as_status=$1; test $as_status -eq 0 && as_status=1
+ if test "$4"; then
+ as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
fi
- $as_echo "$as_me: error: $1" >&2
+ $as_echo "$as_me: error: $2" >&2
as_fn_exit $as_status
} # as_fn_error
@@ -12122,7 +13364,7 @@
test -d "$as_dir" && break
done
test -z "$as_dirs" || eval "mkdir $as_dirs"
- } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+ } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
} # as_fn_mkdir_p
@@ -12175,8 +13417,8 @@
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
-This file was extended by libpng $as_me 1.4.9beta01, which was
-generated by GNU Autoconf 2.65. Invocation command line was
+This file was extended by libpng $as_me 1.5.10beta01, which was
+generated by GNU Autoconf 2.68. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
CONFIG_HEADERS = $CONFIG_HEADERS
@@ -12241,11 +13483,11 @@
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
ac_cs_version="\\
-libpng config.status 1.4.9beta01
-configured by $0, generated by GNU Autoconf 2.65,
+libpng config.status 1.5.10beta01
+configured by $0, generated by GNU Autoconf 2.68,
with options \\"\$ac_cs_config\\"
-Copyright (C) 2009 Free Software Foundation, Inc.
+Copyright (C) 2010 Free Software Foundation, Inc.
This config.status script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it."
@@ -12263,11 +13505,16 @@
while test $# != 0
do
case $1 in
- --*=*)
+ --*=?*)
ac_option=`expr "X$1" : 'X\([^=]*\)='`
ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
ac_shift=:
;;
+ --*=)
+ ac_option=`expr "X$1" : 'X\([^=]*\)='`
+ ac_optarg=
+ ac_shift=:
+ ;;
*)
ac_option=$1
ac_optarg=$2
@@ -12289,6 +13536,7 @@
$ac_shift
case $ac_optarg in
*\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ '') as_fn_error $? "missing file argument" ;;
esac
as_fn_append CONFIG_FILES " '$ac_optarg'"
ac_need_defaults=false;;
@@ -12301,7 +13549,7 @@
ac_need_defaults=false;;
--he | --h)
# Conflict between --help and --header
- as_fn_error "ambiguous option: \`$1'
+ as_fn_error $? "ambiguous option: \`$1'
Try \`$0 --help' for more information.";;
--help | --hel | -h )
$as_echo "$ac_cs_usage"; exit ;;
@@ -12310,7 +13558,7 @@
ac_cs_silent=: ;;
# This is an error.
- -*) as_fn_error "unrecognized option: \`$1'
+ -*) as_fn_error $? "unrecognized option: \`$1'
Try \`$0 --help' for more information." ;;
*) as_fn_append ac_config_targets " $1"
@@ -12381,6 +13629,7 @@
enable_static='`$ECHO "$enable_static" | $SED "$delay_single_quote_subst"`'
pic_mode='`$ECHO "$pic_mode" | $SED "$delay_single_quote_subst"`'
enable_fast_install='`$ECHO "$enable_fast_install" | $SED "$delay_single_quote_subst"`'
+PATH_SEPARATOR='`$ECHO "$PATH_SEPARATOR" | $SED "$delay_single_quote_subst"`'
host_alias='`$ECHO "$host_alias" | $SED "$delay_single_quote_subst"`'
host='`$ECHO "$host" | $SED "$delay_single_quote_subst"`'
host_os='`$ECHO "$host_os" | $SED "$delay_single_quote_subst"`'
@@ -12395,12 +13644,18 @@
lt_unset='`$ECHO "$lt_unset" | $SED "$delay_single_quote_subst"`'
lt_SP2NL='`$ECHO "$lt_SP2NL" | $SED "$delay_single_quote_subst"`'
lt_NL2SP='`$ECHO "$lt_NL2SP" | $SED "$delay_single_quote_subst"`'
+lt_cv_to_host_file_cmd='`$ECHO "$lt_cv_to_host_file_cmd" | $SED "$delay_single_quote_subst"`'
+lt_cv_to_tool_file_cmd='`$ECHO "$lt_cv_to_tool_file_cmd" | $SED "$delay_single_quote_subst"`'
reload_flag='`$ECHO "$reload_flag" | $SED "$delay_single_quote_subst"`'
reload_cmds='`$ECHO "$reload_cmds" | $SED "$delay_single_quote_subst"`'
deplibs_check_method='`$ECHO "$deplibs_check_method" | $SED "$delay_single_quote_subst"`'
file_magic_cmd='`$ECHO "$file_magic_cmd" | $SED "$delay_single_quote_subst"`'
+file_magic_glob='`$ECHO "$file_magic_glob" | $SED "$delay_single_quote_subst"`'
+want_nocaseglob='`$ECHO "$want_nocaseglob" | $SED "$delay_single_quote_subst"`'
+sharedlib_from_linklib_cmd='`$ECHO "$sharedlib_from_linklib_cmd" | $SED "$delay_single_quote_subst"`'
AR='`$ECHO "$AR" | $SED "$delay_single_quote_subst"`'
AR_FLAGS='`$ECHO "$AR_FLAGS" | $SED "$delay_single_quote_subst"`'
+archiver_list_spec='`$ECHO "$archiver_list_spec" | $SED "$delay_single_quote_subst"`'
STRIP='`$ECHO "$STRIP" | $SED "$delay_single_quote_subst"`'
RANLIB='`$ECHO "$RANLIB" | $SED "$delay_single_quote_subst"`'
old_postinstall_cmds='`$ECHO "$old_postinstall_cmds" | $SED "$delay_single_quote_subst"`'
@@ -12415,14 +13670,17 @@
lt_cv_sys_global_symbol_to_cdecl='`$ECHO "$lt_cv_sys_global_symbol_to_cdecl" | $SED "$delay_single_quote_subst"`'
lt_cv_sys_global_symbol_to_c_name_address='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address" | $SED "$delay_single_quote_subst"`'
lt_cv_sys_global_symbol_to_c_name_address_lib_prefix='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address_lib_prefix" | $SED "$delay_single_quote_subst"`'
+nm_file_list_spec='`$ECHO "$nm_file_list_spec" | $SED "$delay_single_quote_subst"`'
+lt_sysroot='`$ECHO "$lt_sysroot" | $SED "$delay_single_quote_subst"`'
objdir='`$ECHO "$objdir" | $SED "$delay_single_quote_subst"`'
MAGIC_CMD='`$ECHO "$MAGIC_CMD" | $SED "$delay_single_quote_subst"`'
lt_prog_compiler_no_builtin_flag='`$ECHO "$lt_prog_compiler_no_builtin_flag" | $SED "$delay_single_quote_subst"`'
-lt_prog_compiler_wl='`$ECHO "$lt_prog_compiler_wl" | $SED "$delay_single_quote_subst"`'
lt_prog_compiler_pic='`$ECHO "$lt_prog_compiler_pic" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_wl='`$ECHO "$lt_prog_compiler_wl" | $SED "$delay_single_quote_subst"`'
lt_prog_compiler_static='`$ECHO "$lt_prog_compiler_static" | $SED "$delay_single_quote_subst"`'
lt_cv_prog_compiler_c_o='`$ECHO "$lt_cv_prog_compiler_c_o" | $SED "$delay_single_quote_subst"`'
need_locks='`$ECHO "$need_locks" | $SED "$delay_single_quote_subst"`'
+MANIFEST_TOOL='`$ECHO "$MANIFEST_TOOL" | $SED "$delay_single_quote_subst"`'
DSYMUTIL='`$ECHO "$DSYMUTIL" | $SED "$delay_single_quote_subst"`'
NMEDIT='`$ECHO "$NMEDIT" | $SED "$delay_single_quote_subst"`'
LIPO='`$ECHO "$LIPO" | $SED "$delay_single_quote_subst"`'
@@ -12446,7 +13704,6 @@
allow_undefined_flag='`$ECHO "$allow_undefined_flag" | $SED "$delay_single_quote_subst"`'
no_undefined_flag='`$ECHO "$no_undefined_flag" | $SED "$delay_single_quote_subst"`'
hardcode_libdir_flag_spec='`$ECHO "$hardcode_libdir_flag_spec" | $SED "$delay_single_quote_subst"`'
-hardcode_libdir_flag_spec_ld='`$ECHO "$hardcode_libdir_flag_spec_ld" | $SED "$delay_single_quote_subst"`'
hardcode_libdir_separator='`$ECHO "$hardcode_libdir_separator" | $SED "$delay_single_quote_subst"`'
hardcode_direct='`$ECHO "$hardcode_direct" | $SED "$delay_single_quote_subst"`'
hardcode_direct_absolute='`$ECHO "$hardcode_direct_absolute" | $SED "$delay_single_quote_subst"`'
@@ -12455,12 +13712,12 @@
hardcode_automatic='`$ECHO "$hardcode_automatic" | $SED "$delay_single_quote_subst"`'
inherit_rpath='`$ECHO "$inherit_rpath" | $SED "$delay_single_quote_subst"`'
link_all_deplibs='`$ECHO "$link_all_deplibs" | $SED "$delay_single_quote_subst"`'
-fix_srcfile_path='`$ECHO "$fix_srcfile_path" | $SED "$delay_single_quote_subst"`'
always_export_symbols='`$ECHO "$always_export_symbols" | $SED "$delay_single_quote_subst"`'
export_symbols_cmds='`$ECHO "$export_symbols_cmds" | $SED "$delay_single_quote_subst"`'
exclude_expsyms='`$ECHO "$exclude_expsyms" | $SED "$delay_single_quote_subst"`'
include_expsyms='`$ECHO "$include_expsyms" | $SED "$delay_single_quote_subst"`'
prelink_cmds='`$ECHO "$prelink_cmds" | $SED "$delay_single_quote_subst"`'
+postlink_cmds='`$ECHO "$postlink_cmds" | $SED "$delay_single_quote_subst"`'
file_list_spec='`$ECHO "$file_list_spec" | $SED "$delay_single_quote_subst"`'
variables_saved_for_relink='`$ECHO "$variables_saved_for_relink" | $SED "$delay_single_quote_subst"`'
need_lib_prefix='`$ECHO "$need_lib_prefix" | $SED "$delay_single_quote_subst"`'
@@ -12510,6 +13767,7 @@
AS \
DLLTOOL \
OBJDUMP \
+PATH_SEPARATOR \
NM \
LN_S \
lt_SP2NL \
@@ -12517,8 +13775,12 @@
reload_flag \
deplibs_check_method \
file_magic_cmd \
+file_magic_glob \
+want_nocaseglob \
+sharedlib_from_linklib_cmd \
AR \
AR_FLAGS \
+archiver_list_spec \
STRIP \
RANLIB \
CC \
@@ -12528,12 +13790,14 @@
lt_cv_sys_global_symbol_to_cdecl \
lt_cv_sys_global_symbol_to_c_name_address \
lt_cv_sys_global_symbol_to_c_name_address_lib_prefix \
+nm_file_list_spec \
lt_prog_compiler_no_builtin_flag \
-lt_prog_compiler_wl \
lt_prog_compiler_pic \
+lt_prog_compiler_wl \
lt_prog_compiler_static \
lt_cv_prog_compiler_c_o \
need_locks \
+MANIFEST_TOOL \
DSYMUTIL \
NMEDIT \
LIPO \
@@ -12547,9 +13811,7 @@
allow_undefined_flag \
no_undefined_flag \
hardcode_libdir_flag_spec \
-hardcode_libdir_flag_spec_ld \
hardcode_libdir_separator \
-fix_srcfile_path \
exclude_expsyms \
include_expsyms \
file_list_spec \
@@ -12585,6 +13847,7 @@
module_expsym_cmds \
export_symbols_cmds \
prelink_cmds \
+postlink_cmds \
postinstall_cmds \
postuninstall_cmds \
finish_cmds \
@@ -12635,7 +13898,7 @@
"libpng.pc") CONFIG_FILES="$CONFIG_FILES libpng.pc:libpng.pc.in" ;;
"libpng-config") CONFIG_FILES="$CONFIG_FILES libpng-config:libpng-config.in" ;;
- *) as_fn_error "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+ *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
esac
done
@@ -12658,9 +13921,10 @@
# after its creation but before its name has been assigned to `$tmp'.
$debug ||
{
- tmp=
+ tmp= ac_tmp=
trap 'exit_status=$?
- { test -z "$tmp" || test ! -d "$tmp" || rm -fr "$tmp"; } && exit $exit_status
+ : "${ac_tmp:=$tmp}"
+ { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status
' 0
trap 'as_fn_exit 1' 1 2 13 15
}
@@ -12668,12 +13932,13 @@
{
tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
- test -n "$tmp" && test -d "$tmp"
+ test -d "$tmp"
} ||
{
tmp=./conf$$-$RANDOM
(umask 077 && mkdir "$tmp")
-} || as_fn_error "cannot create a temporary directory in ." "$LINENO" 5
+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+ac_tmp=$tmp
# Set up the scripts for CONFIG_FILES section.
# No need to generate them if there are no CONFIG_FILES.
@@ -12690,12 +13955,12 @@
fi
ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
- ac_cs_awk_cr='\r'
+ ac_cs_awk_cr='\\r'
else
ac_cs_awk_cr=$ac_cr
fi
-echo 'BEGIN {' >"$tmp/subs1.awk" &&
+echo 'BEGIN {' >"$ac_tmp/subs1.awk" &&
_ACEOF
@@ -12704,18 +13969,18 @@
echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
echo "_ACEOF"
} >conf$$subs.sh ||
- as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
-ac_delim_num=`echo "$ac_subst_vars" | grep -c '$'`
+ as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
ac_delim='%!_!# '
for ac_last_try in false false false false false :; do
. ./conf$$subs.sh ||
- as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+ as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
if test $ac_delim_n = $ac_delim_num; then
break
elif $ac_last_try; then
- as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+ as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
else
ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
fi
@@ -12723,7 +13988,7 @@
rm -f conf$$subs.sh
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
-cat >>"\$tmp/subs1.awk" <<\\_ACAWK &&
+cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
_ACEOF
sed -n '
h
@@ -12771,7 +14036,7 @@
rm -f conf$$subs.awk
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
_ACAWK
-cat >>"\$tmp/subs1.awk" <<_ACAWK &&
+cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
for (key in S) S_is_set[key] = 1
FS = ""
@@ -12803,21 +14068,29 @@
sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
else
cat
-fi < "$tmp/subs1.awk" > "$tmp/subs.awk" \
- || as_fn_error "could not setup config files machinery" "$LINENO" 5
+fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
+ || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
_ACEOF
-# VPATH may cause trouble with some makes, so we remove $(srcdir),
-# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
+# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
+# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and
# trailing colons and then remove the whole line if VPATH becomes empty
# (actually we leave an empty line to preserve line numbers).
if test "x$srcdir" = x.; then
- ac_vpsub='/^[ ]*VPATH[ ]*=/{
-s/:*\$(srcdir):*/:/
-s/:*\${srcdir}:*/:/
-s/:*@srcdir@:*/:/
-s/^\([^=]*=[ ]*\):*/\1/
+ ac_vpsub='/^[ ]*VPATH[ ]*=[ ]*/{
+h
+s///
+s/^/:/
+s/[ ]*$/:/
+s/:\$(srcdir):/:/g
+s/:\${srcdir}:/:/g
+s/:@srcdir@:/:/g
+s/^:*//
s/:*$//
+x
+s/\(=[ ]*\).*/\1/
+G
+s/\n//
s/^[^=]*=[ ]*$//
}'
fi
@@ -12829,7 +14102,7 @@
# No need to generate them if there are no CONFIG_HEADERS.
# This happens for instance with `./config.status Makefile'.
if test -n "$CONFIG_HEADERS"; then
-cat >"$tmp/defines.awk" <<\_ACAWK ||
+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||
BEGIN {
_ACEOF
@@ -12841,11 +14114,11 @@
# handling of long lines.
ac_delim='%!_!# '
for ac_last_try in false false :; do
- ac_t=`sed -n "/$ac_delim/p" confdefs.h`
- if test -z "$ac_t"; then
+ ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
+ if test -z "$ac_tt"; then
break
elif $ac_last_try; then
- as_fn_error "could not make $CONFIG_HEADERS" "$LINENO" 5
+ as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
else
ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
fi
@@ -12930,7 +14203,7 @@
_ACAWK
_ACEOF
cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
- as_fn_error "could not setup config headers machinery" "$LINENO" 5
+ as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
fi # test -n "$CONFIG_HEADERS"
@@ -12943,7 +14216,7 @@
esac
case $ac_mode$ac_tag in
:[FHL]*:*);;
- :L* | :C*:*) as_fn_error "invalid tag \`$ac_tag'" "$LINENO" 5;;
+ :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
:[FH]-) ac_tag=-:-;;
:[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
esac
@@ -12962,7 +14235,7 @@
for ac_f
do
case $ac_f in
- -) ac_f="$tmp/stdin";;
+ -) ac_f="$ac_tmp/stdin";;
*) # Look for the file first in the build tree, then in the source tree
# (if the path is not absolute). The absolute path cannot be DOS-style,
# because $ac_f cannot contain `:'.
@@ -12971,7 +14244,7 @@
[\\/$]*) false;;
*) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
esac ||
- as_fn_error "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+ as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
esac
case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
as_fn_append ac_file_inputs " '$ac_f'"
@@ -12997,8 +14270,8 @@
esac
case $ac_tag in
- *:-:* | *:-) cat >"$tmp/stdin" \
- || as_fn_error "could not create $ac_file" "$LINENO" 5 ;;
+ *:-:* | *:-) cat >"$ac_tmp/stdin" \
+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
esac
;;
esac
@@ -13134,23 +14407,24 @@
s&@MKDIR_P@&$ac_MKDIR_P&;t t
$ac_datarootdir_hack
"
-eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$tmp/subs.awk" >$tmp/out \
- || as_fn_error "could not create $ac_file" "$LINENO" 5
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
+ >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5
test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
- { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } &&
- { ac_out=`sed -n '/^[ ]*datarootdir[ ]*:*=/p' "$tmp/out"`; test -z "$ac_out"; } &&
+ { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
+ { ac_out=`sed -n '/^[ ]*datarootdir[ ]*:*=/p' \
+ "$ac_tmp/out"`; test -z "$ac_out"; } &&
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
-which seems to be undefined. Please make sure it is defined." >&5
+which seems to be undefined. Please make sure it is defined" >&5
$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
-which seems to be undefined. Please make sure it is defined." >&2;}
+which seems to be undefined. Please make sure it is defined" >&2;}
- rm -f "$tmp/stdin"
+ rm -f "$ac_tmp/stdin"
case $ac_file in
- -) cat "$tmp/out" && rm -f "$tmp/out";;
- *) rm -f "$ac_file" && mv "$tmp/out" "$ac_file";;
+ -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";;
+ *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";;
esac \
- || as_fn_error "could not create $ac_file" "$LINENO" 5
+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5
;;
:H)
#
@@ -13159,21 +14433,21 @@
if test x"$ac_file" != x-; then
{
$as_echo "/* $configure_input */" \
- && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs"
- } >"$tmp/config.h" \
- || as_fn_error "could not create $ac_file" "$LINENO" 5
- if diff "$ac_file" "$tmp/config.h" >/dev/null 2>&1; then
+ && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
+ } >"$ac_tmp/config.h" \
+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
$as_echo "$as_me: $ac_file is unchanged" >&6;}
else
rm -f "$ac_file"
- mv "$tmp/config.h" "$ac_file" \
- || as_fn_error "could not create $ac_file" "$LINENO" 5
+ mv "$ac_tmp/config.h" "$ac_file" \
+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5
fi
else
$as_echo "/* $configure_input */" \
- && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs" \
- || as_fn_error "could not create -" "$LINENO" 5
+ && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
+ || as_fn_error $? "could not create -" "$LINENO" 5
fi
# Compute "$ac_file"'s index in $config_headers.
_am_arg="$ac_file"
@@ -13334,8 +14608,8 @@
# NOTE: Changes made to this file will be lost: look at ltmain.sh.
#
# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010 Free Software Foundation,
-# Inc.
+# 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+# Foundation, Inc.
# Written by Gordon Matzigkeit, 1996
#
# This file is part of GNU Libtool.
@@ -13413,6 +14687,9 @@
# Whether or not to optimize for fast installation.
fast_install=$enable_fast_install
+# The PATH separator for the build system.
+PATH_SEPARATOR=$lt_PATH_SEPARATOR
+
# The host system.
host_alias=$host_alias
host=$host
@@ -13447,16 +14724,36 @@
# turn newlines into spaces.
NL2SP=$lt_lt_NL2SP
+# convert \$build file names to \$host format.
+to_host_file_cmd=$lt_cv_to_host_file_cmd
+
+# convert \$build files to toolchain format.
+to_tool_file_cmd=$lt_cv_to_tool_file_cmd
+
# Method to check whether dependent libraries are shared objects.
deplibs_check_method=$lt_deplibs_check_method
-# Command to use when deplibs_check_method == "file_magic".
+# Command to use when deplibs_check_method = "file_magic".
file_magic_cmd=$lt_file_magic_cmd
+# How to find potential files when deplibs_check_method = "file_magic".
+file_magic_glob=$lt_file_magic_glob
+
+# Find potential files using nocaseglob when deplibs_check_method = "file_magic".
+want_nocaseglob=$lt_want_nocaseglob
+
+# Command to associate shared and link libraries.
+sharedlib_from_linklib_cmd=$lt_sharedlib_from_linklib_cmd
+
# The archiver.
AR=$lt_AR
+
+# Flags to create an archive.
AR_FLAGS=$lt_AR_FLAGS
+# How to feed a file listing to the archiver.
+archiver_list_spec=$lt_archiver_list_spec
+
# A symbol stripping program.
STRIP=$lt_STRIP
@@ -13486,6 +14783,12 @@
# Transform the output of nm in a C name address pair when lib prefix is needed.
global_symbol_to_c_name_address_lib_prefix=$lt_lt_cv_sys_global_symbol_to_c_name_address_lib_prefix
+# Specify filename containing input files for \$NM.
+nm_file_list_spec=$lt_nm_file_list_spec
+
+# The root where to search for dependent libraries,and in which our libraries should be installed.
+lt_sysroot=$lt_sysroot
+
# The name of the directory that contains temporary libtool files.
objdir=$objdir
@@ -13495,6 +14798,9 @@
# Must we lock files when doing compilation?
need_locks=$lt_need_locks
+# Manifest tool.
+MANIFEST_TOOL=$lt_MANIFEST_TOOL
+
# Tool to manipulate archived DWARF debug symbol files on Mac OS X.
DSYMUTIL=$lt_DSYMUTIL
@@ -13609,12 +14915,12 @@
# Compiler flag to turn off builtin functions.
no_builtin_flag=$lt_lt_prog_compiler_no_builtin_flag
-# How to pass a linker flag through the compiler.
-wl=$lt_lt_prog_compiler_wl
-
# Additional compiler flags for building library objects.
pic_flag=$lt_lt_prog_compiler_pic
+# How to pass a linker flag through the compiler.
+wl=$lt_lt_prog_compiler_wl
+
# Compiler flag to prevent dynamic linking.
link_static_flag=$lt_lt_prog_compiler_static
@@ -13664,10 +14970,6 @@
# This must work even if \$libdir does not exist
hardcode_libdir_flag_spec=$lt_hardcode_libdir_flag_spec
-# If ld is used when linking, flag to hardcode \$libdir into a binary
-# during linking. This must work even if \$libdir does not exist.
-hardcode_libdir_flag_spec_ld=$lt_hardcode_libdir_flag_spec_ld
-
# Whether we need a single "-rpath" flag with a separated argument.
hardcode_libdir_separator=$lt_hardcode_libdir_separator
@@ -13701,9 +15003,6 @@
# Whether libtool must link a program against all its dependency libraries.
link_all_deplibs=$link_all_deplibs
-# Fix the shell variable \$srcfile for the compiler.
-fix_srcfile_path=$lt_fix_srcfile_path
-
# Set to "yes" if exported symbols are required.
always_export_symbols=$always_export_symbols
@@ -13719,6 +15018,9 @@
# Commands necessary for linking programs (against libraries) with templates.
prelink_cmds=$lt_prelink_cmds
+# Commands necessary for finishing linking programs.
+postlink_cmds=$lt_postlink_cmds
+
# Specify filename containing input files.
file_list_spec=$lt_file_list_spec
@@ -13751,210 +15053,169 @@
# if finds mixed CR/LF and LF-only lines. Since sed operates in
# text mode, it properly converts lines to CR/LF. This bash problem
# is reportedly fixed, but why not run on old versions too?
- sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
- || (rm -f "$cfgfile"; exit 1)
+ sed '$q' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
- case $xsi_shell in
- yes)
- cat << \_LT_EOF >> "$cfgfile"
-
-# func_dirname file append nondir_replacement
-# Compute the dirname of FILE. If nonempty, add APPEND to the result,
-# otherwise set result to NONDIR_REPLACEMENT.
-func_dirname ()
-{
- case ${1} in
- */*) func_dirname_result="${1%/*}${2}" ;;
- * ) func_dirname_result="${3}" ;;
- esac
-}
-
-# func_basename file
-func_basename ()
-{
- func_basename_result="${1##*/}"
-}
-
-# func_dirname_and_basename file append nondir_replacement
-# perform func_basename and func_dirname in a single function
-# call:
-# dirname: Compute the dirname of FILE. If nonempty,
-# add APPEND to the result, otherwise set result
-# to NONDIR_REPLACEMENT.
-# value returned in "$func_dirname_result"
-# basename: Compute filename of FILE.
-# value retuned in "$func_basename_result"
-# Implementation must be kept synchronized with func_dirname
-# and func_basename. For efficiency, we do not delegate to
-# those functions but instead duplicate the functionality here.
-func_dirname_and_basename ()
-{
- case ${1} in
- */*) func_dirname_result="${1%/*}${2}" ;;
- * ) func_dirname_result="${3}" ;;
- esac
- func_basename_result="${1##*/}"
-}
-
-# func_stripname prefix suffix name
-# strip PREFIX and SUFFIX off of NAME.
-# PREFIX and SUFFIX must not contain globbing or regex special
-# characters, hashes, percent signs, but SUFFIX may contain a leading
-# dot (in which case that matches only a dot).
-func_stripname ()
-{
- # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
- # positional parameters, so assign one to ordinary parameter first.
- func_stripname_result=${3}
- func_stripname_result=${func_stripname_result#"${1}"}
- func_stripname_result=${func_stripname_result%"${2}"}
-}
-
-# func_opt_split
-func_opt_split ()
-{
- func_opt_split_opt=${1%%=*}
- func_opt_split_arg=${1#*=}
-}
-
-# func_lo2o object
-func_lo2o ()
-{
- case ${1} in
- *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
- *) func_lo2o_result=${1} ;;
- esac
-}
-
-# func_xform libobj-or-source
-func_xform ()
-{
- func_xform_result=${1%.*}.lo
-}
-
-# func_arith arithmetic-term...
-func_arith ()
-{
- func_arith_result=$(( $* ))
-}
-
-# func_len string
-# STRING may not start with a hyphen.
-func_len ()
-{
- func_len_result=${#1}
-}
-
-_LT_EOF
- ;;
- *) # Bourne compatible functions.
- cat << \_LT_EOF >> "$cfgfile"
-
-# func_dirname file append nondir_replacement
-# Compute the dirname of FILE. If nonempty, add APPEND to the result,
-# otherwise set result to NONDIR_REPLACEMENT.
-func_dirname ()
-{
- # Extract subdirectory from the argument.
- func_dirname_result=`$ECHO "${1}" | $SED "$dirname"`
- if test "X$func_dirname_result" = "X${1}"; then
- func_dirname_result="${3}"
- else
- func_dirname_result="$func_dirname_result${2}"
- fi
-}
-
-# func_basename file
-func_basename ()
-{
- func_basename_result=`$ECHO "${1}" | $SED "$basename"`
-}
+ if test x"$xsi_shell" = xyes; then
+ sed -e '/^func_dirname ()$/,/^} # func_dirname /c\
+func_dirname ()\
+{\
+\ case ${1} in\
+\ */*) func_dirname_result="${1%/*}${2}" ;;\
+\ * ) func_dirname_result="${3}" ;;\
+\ esac\
+} # Extended-shell func_dirname implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
-# func_stripname prefix suffix name
-# strip PREFIX and SUFFIX off of NAME.
-# PREFIX and SUFFIX must not contain globbing or regex special
-# characters, hashes, percent signs, but SUFFIX may contain a leading
-# dot (in which case that matches only a dot).
-# func_strip_suffix prefix name
-func_stripname ()
-{
- case ${2} in
- .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
- *) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
- esac
-}
-
-# sed scripts:
-my_sed_long_opt='1s/^\(-[^=]*\)=.*/\1/;q'
-my_sed_long_arg='1s/^-[^=]*=//'
-
-# func_opt_split
-func_opt_split ()
-{
- func_opt_split_opt=`$ECHO "${1}" | $SED "$my_sed_long_opt"`
- func_opt_split_arg=`$ECHO "${1}" | $SED "$my_sed_long_arg"`
-}
-
-# func_lo2o object
-func_lo2o ()
-{
- func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"`
-}
-
-# func_xform libobj-or-source
-func_xform ()
-{
- func_xform_result=`$ECHO "${1}" | $SED 's/\.[^.]*$/.lo/'`
-}
-
-# func_arith arithmetic-term...
-func_arith ()
-{
- func_arith_result=`expr "$@"`
-}
-
-# func_len string
-# STRING may not start with a hyphen.
-func_len ()
-{
- func_len_result=`expr "$1" : ".*" 2>/dev/null || echo $max_cmd_len`
-}
-
-_LT_EOF
-esac
-
-case $lt_shell_append in
- yes)
- cat << \_LT_EOF >> "$cfgfile"
-
-# func_append var value
-# Append VALUE to the end of shell variable VAR.
-func_append ()
-{
- eval "$1+=\$2"
-}
-_LT_EOF
- ;;
- *)
- cat << \_LT_EOF >> "$cfgfile"
-
-# func_append var value
-# Append VALUE to the end of shell variable VAR.
-func_append ()
-{
- eval "$1=\$$1\$2"
-}
-
-_LT_EOF
- ;;
- esac
+ sed -e '/^func_basename ()$/,/^} # func_basename /c\
+func_basename ()\
+{\
+\ func_basename_result="${1##*/}"\
+} # Extended-shell func_basename implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
- sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
- || (rm -f "$cfgfile"; exit 1)
+ sed -e '/^func_dirname_and_basename ()$/,/^} # func_dirname_and_basename /c\
+func_dirname_and_basename ()\
+{\
+\ case ${1} in\
+\ */*) func_dirname_result="${1%/*}${2}" ;;\
+\ * ) func_dirname_result="${3}" ;;\
+\ esac\
+\ func_basename_result="${1##*/}"\
+} # Extended-shell func_dirname_and_basename implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
- mv -f "$cfgfile" "$ofile" ||
+
+ sed -e '/^func_stripname ()$/,/^} # func_stripname /c\
+func_stripname ()\
+{\
+\ # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are\
+\ # positional parameters, so assign one to ordinary parameter first.\
+\ func_stripname_result=${3}\
+\ func_stripname_result=${func_stripname_result#"${1}"}\
+\ func_stripname_result=${func_stripname_result%"${2}"}\
+} # Extended-shell func_stripname implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+ sed -e '/^func_split_long_opt ()$/,/^} # func_split_long_opt /c\
+func_split_long_opt ()\
+{\
+\ func_split_long_opt_name=${1%%=*}\
+\ func_split_long_opt_arg=${1#*=}\
+} # Extended-shell func_split_long_opt implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+ sed -e '/^func_split_short_opt ()$/,/^} # func_split_short_opt /c\
+func_split_short_opt ()\
+{\
+\ func_split_short_opt_arg=${1#??}\
+\ func_split_short_opt_name=${1%"$func_split_short_opt_arg"}\
+} # Extended-shell func_split_short_opt implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+ sed -e '/^func_lo2o ()$/,/^} # func_lo2o /c\
+func_lo2o ()\
+{\
+\ case ${1} in\
+\ *.lo) func_lo2o_result=${1%.lo}.${objext} ;;\
+\ *) func_lo2o_result=${1} ;;\
+\ esac\
+} # Extended-shell func_lo2o implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+ sed -e '/^func_xform ()$/,/^} # func_xform /c\
+func_xform ()\
+{\
+ func_xform_result=${1%.*}.lo\
+} # Extended-shell func_xform implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+ sed -e '/^func_arith ()$/,/^} # func_arith /c\
+func_arith ()\
+{\
+ func_arith_result=$(( $* ))\
+} # Extended-shell func_arith implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+ sed -e '/^func_len ()$/,/^} # func_len /c\
+func_len ()\
+{\
+ func_len_result=${#1}\
+} # Extended-shell func_len implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+fi
+
+if test x"$lt_shell_append" = xyes; then
+ sed -e '/^func_append ()$/,/^} # func_append /c\
+func_append ()\
+{\
+ eval "${1}+=\\${2}"\
+} # Extended-shell func_append implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+ sed -e '/^func_append_quoted ()$/,/^} # func_append_quoted /c\
+func_append_quoted ()\
+{\
+\ func_quote_for_eval "${2}"\
+\ eval "${1}+=\\\\ \\$func_quote_for_eval_result"\
+} # Extended-shell func_append_quoted implementation' "$cfgfile" > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+ # Save a `func_append' function call where possible by direct use of '+='
+ sed -e 's%func_append \([a-zA-Z_]\{1,\}\) "%\1+="%g' $cfgfile > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+ test 0 -eq $? || _lt_function_replace_fail=:
+else
+ # Save a `func_append' function call even when '+=' is not available
+ sed -e 's%func_append \([a-zA-Z_]\{1,\}\) "%\1="$\1%g' $cfgfile > $cfgfile.tmp \
+ && mv -f "$cfgfile.tmp" "$cfgfile" \
+ || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+ test 0 -eq $? || _lt_function_replace_fail=:
+fi
+
+if test x"$_lt_function_replace_fail" = x":"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Unable to substitute extended shell functions in $ofile" >&5
+$as_echo "$as_me: WARNING: Unable to substitute extended shell functions in $ofile" >&2;}
+fi
+
+
+ mv -f "$cfgfile" "$ofile" ||
(rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
chmod +x "$ofile"
@@ -13970,7 +15231,7 @@
ac_clean_files=$ac_clean_files_save
test $ac_write_fail = 0 ||
- as_fn_error "write failure creating $CONFIG_STATUS" "$LINENO" 5
+ as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
# configure is writing to config.log, and then calls config.status.
@@ -13991,7 +15252,7 @@
exec 5>>config.log
# Use ||, not &&, to avoid exiting from the if with $? = 1, which
# would make configure fail if this is the last instruction.
- $ac_cs_success || as_fn_exit $?
+ $ac_cs_success || as_fn_exit 1
fi
if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
diff --git a/configure.ac b/configure.ac
index 8c9c7c9..a099857 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,17 +16,17 @@
dnl stamps are correct
AC_PREREQ(2.59)
-AC_INIT([libpng], [1.4.9beta01], [png-mng-implement@lists.sourceforge.net])
+dnl Version number stuff here:
+
+AC_INIT([libpng], [1.5.10beta01], [png-mng-implement@lists.sourceforge.net])
AM_INIT_AUTOMAKE
dnl stop configure from automagically running automake
AM_MAINTAINER_MODE
-dnl Version number stuff here:
-
-PNGLIB_VERSION=1.4.9beta01
+PNGLIB_VERSION=1.5.10beta01
PNGLIB_MAJOR=1
-PNGLIB_MINOR=4
-PNGLIB_RELEASE=9
+PNGLIB_MINOR=5
+PNGLIB_RELEASE=10
dnl End of version number stuff
@@ -34,15 +34,40 @@
AM_CONFIG_HEADER(config.h)
# Checks for programs.
+AC_LANG([C])
AC_PROG_CC
+AM_PROG_AS
AC_PROG_LD
AC_PROG_CPP
AC_CHECK_TOOL(SED, sed, :)
+AC_CHECK_TOOL(AWK, awk, :)
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
LT_INIT([win32-dll])
+# On Solaris 10 and 12 CPP gets set to cc -E, however this still
+# does some input parsing. We need strict ANSI-C style tokenization,
+# check this:
+AC_REQUIRE_CPP
+AC_MSG_CHECKING([for a C preprocessor that does not parse its input])
+AC_TRY_CPP([1.5.0 16BIT],
+ [DFNCPP="$CPP"],
+ [DFNCPP=""
+ sav_CPP="$CPP"
+ for CPP in "${CC-cc} -E" "${CC-cc} -E -traditional-cpp" "/lib/cpp" "cpp"; do
+ AC_TRY_CPP([1.5.0 16BIT],
+ [DFNCPP="$CPP"]
+ [break],,)
+ done
+ CPP="$sav_CPP"])
+if test -n "$DFNCPP"; then
+ AC_MSG_RESULT([$DFNCPP])
+ AC_SUBST(DFNCPP)
+else
+ AC_MSG_FAILURE([not found], 1)
+fi
+
# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([malloc.h stdlib.h string.h strings.h])
@@ -51,33 +76,31 @@
AC_C_CONST
AC_TYPE_SIZE_T
AC_STRUCT_TM
+AC_C_RESTRICT
# Checks for library functions.
AC_FUNC_STRTOD
AC_CHECK_FUNCS([memset], , AC_ERROR([memset not found in libc]))
AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_ERROR([cannot find pow])) )
-AC_CHECK_LIB(z, zlibVersion, , AC_ERROR([zlib not installed]))
+AC_ARG_WITH(zlib-prefix,
+ AC_HELP_STRING([--with-zlib-prefix],
+ [prefix that may have been used in installed zlib]),
+ [ZPREFIX=${withval}],
+ [ZPREFIX='z_'])
+AC_CHECK_LIB(z, zlibVersion, ,
+ AC_CHECK_LIB(z, ${ZPREFIX}zlibVersion, ,
+ AC_ERROR([zlib not installed])))
-case $host_os in
- aix*)
- LIBPNG_DEFINES="-DPNG_CONFIGURE_LIBPNG -D_ALL_SOURCE";;
- *)
- LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG;;
-esac
+# The following is for pngvalid, to ensure it catches FP errors even on
+# platforms that don't enable FP exceptions, the function appears in the math
+# library (typically), it's not an error if it is not found.
+AC_CHECK_LIB([m], [feenableexcept])
+AC_CHECK_FUNCS([feenableexcept])
+
+LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
LIBPNG_DEFINES=$LIBPNG_DEFINES
AC_SUBST(LIBPNG_DEFINES)
-AC_MSG_CHECKING([if libraries can be versioned])
-# Special case for PE/COFF platforms: ld reports
-# support for version-script, but doesn't actually
-# DO anything with it.
-case $host in
-*cygwin* | *mingw32* )
- have_ld_version_script=no
- AC_MSG_RESULT(no)
-;;
-* )
-
AC_MSG_CHECKING([if using Solaris linker])
SLD=`$LD --version 2>&1 | grep Solaris`
if test "$SLD"; then
@@ -89,6 +112,17 @@
fi
AM_CONDITIONAL(HAVE_SOLARIS_LD, test "$have_solaris_ld" = "yes")
+AC_MSG_CHECKING([if libraries can be versioned])
+# Special case for PE/COFF platforms: ld reports
+# support for version-script, but doesn't actually
+# DO anything with it.
+case $host in
+*cygwin* | *mingw32* | *interix* )
+ have_ld_version_script=no
+ AC_MSG_RESULT(no)
+;;
+* )
+
if test "$have_solaris_ld" = "yes"; then
GLD=`$LD --help < /dev/null 2>&1 | grep 'M mapfile'`
else
@@ -149,6 +183,19 @@
[binconfigs='${binconfigs}'])
AC_SUBST([binconfigs])
+# Because GCC by default assembles code with an executable stack, even though it
+# compiles C code with a non-executable stack, it is necessary to do a fixup
+# here (this may by GCC specific)
+AC_SUBST([AM_CCASFLAGS], [-Wa,--noexecstack])
+
+AC_ARG_ENABLE([arm-neon],
+ AC_HELP_STRING([--enable-arm-neon], [Enable ARM NEON optimizations]),
+ [if test "${enableval}" = yes; then
+ AC_DEFINE([PNG_ARM_NEON], [1], [Enable ARM NEON optimizations])
+ AC_DEFINE([PNG_ALIGNED_MEMORY_SUPPORTED], [1], [Align row buffers])
+ fi])
+AM_CONDITIONAL([PNG_ARM_NEON], [test "${enable_arm_neon:-no}" = yes])
+
# Config files, substituting as above
AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in])
AC_CONFIG_FILES([libpng-config:libpng-config.in],
diff --git a/contrib/README.txt b/contrib/README.txt
new file mode 100644
index 0000000..bcd433d
--- /dev/null
+++ b/contrib/README.txt
@@ -0,0 +1,4 @@
+
+This "contrib" directory contains contributions which are not necessarily under
+the libpng license, although all are open source. They are not part of
+libpng proper and are not used for building the library.
diff --git a/contrib/gregbook/COPYING b/contrib/gregbook/COPYING
index d60c31a..a3e9774 100644
--- a/contrib/gregbook/COPYING
+++ b/contrib/gregbook/COPYING
@@ -1,12 +1,12 @@
- GNU GENERAL PUBLIC LICENSE
- Version 2, June 1991
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
- Preamble
+ Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
@@ -56,7 +56,7 @@
The precise terms and conditions for copying, distribution and
modification follow.
- GNU GENERAL PUBLIC LICENSE
+ GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
@@ -255,7 +255,7 @@
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
- NO WARRANTY
+ NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
@@ -277,9 +277,9 @@
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
- END OF TERMS AND CONDITIONS
+ END OF TERMS AND CONDITIONS
- How to Apply These Terms to Your New Programs
+ How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
diff --git a/contrib/gregbook/Makefile.sgi b/contrib/gregbook/Makefile.sgi
index a736566..91623ac 100644
--- a/contrib/gregbook/Makefile.sgi
+++ b/contrib/gregbook/Makefile.sgi
@@ -23,9 +23,9 @@
# macros --------------------------------------------------------------------
-PNGINC = -I/usr/local/include/libpng14
-PNGLIB = -L/usr/local/lib -lpng14 # dynamically linked against libpng
-#PNGLIB = /usr/local/lib/libpng14.a # statically linked against libpng
+PNGINC = -I/usr/local/include/libpng15
+PNGLIB = -L/usr/local/lib -lpng15 # dynamically linked against libpng
+#PNGLIB = /usr/local/lib/libpng15.a # statically linked against libpng
# or:
#PNGINC = -I../..
#PNGLIB = -L../.. -lpng
diff --git a/contrib/gregbook/Makefile.unx b/contrib/gregbook/Makefile.unx
index ca86885..b52d8b6 100644
--- a/contrib/gregbook/Makefile.unx
+++ b/contrib/gregbook/Makefile.unx
@@ -26,14 +26,14 @@
# macros --------------------------------------------------------------------
#PNGDIR = /usr/local/lib
-#PNGINC = -I/usr/local/include/libpng14
-#PNGLIBd = -L$(PNGDIR) -lpng14 # dynamically linked, installed libpng
-#PNGLIBs = $(PNGDIR)/libpng14.a # statically linked, installed libpng
+#PNGINC = -I/usr/local/include/libpng15
+#PNGLIBd = -L$(PNGDIR) -lpng15 # dynamically linked, installed libpng
+#PNGLIBs = $(PNGDIR)/libpng15.a # statically linked, installed libpng
# or:
PNGDIR = ../..# this one is for libpng-x.y.z/contrib/gregbook builds
#PNGDIR = ../libpng
PNGINC = -I$(PNGDIR)
-PNGLIBd = -Wl,-rpath,$(PNGDIR) -L$(PNGDIR) -lpng14 # dynamically linked
+PNGLIBd = -Wl,-rpath,$(PNGDIR) -L$(PNGDIR) -lpng15 # dynamically linked
PNGLIBs = $(PNGDIR)/libpng.a # statically linked, local libpng
ZDIR = /usr/local/lib
diff --git a/contrib/gregbook/Makefile.w32 b/contrib/gregbook/Makefile.w32
index 3c08085..41cfb23 100644
--- a/contrib/gregbook/Makefile.w32
+++ b/contrib/gregbook/Makefile.w32
@@ -18,7 +18,7 @@
# "c:\windows\command.com /e:4096" as the program command line and set the
# working directory to this directory. Then double-click to open the new
# DOS-prompt window with a bigger environment and retry the commands above.
-#
+#
# This makefile assumes libpng and zlib have already been built or downloaded
# and are in subdirectories at the same level as the current subdirectory
# (as indicated by the PNGPATH and ZPATH macros below). Edit as appropriate.
diff --git a/contrib/gregbook/README b/contrib/gregbook/README
index 35bf04f..7b1f6a3 100644
--- a/contrib/gregbook/README
+++ b/contrib/gregbook/README
@@ -63,9 +63,9 @@
- Prerequisites (in order of compilation):
- - zlib http://zlib.net/
- - libpng http://www.libpng.org/pub/png/libpng.html
- - pngbook http://www.libpng.org/pub/png/book/sources.html
+ - zlib http://zlib.net/
+ - libpng http://www.libpng.org/pub/png/libpng.html
+ - pngbook http://www.libpng.org/pub/png/book/sources.html
The pngbook demo programs are explicitly designed to demonstrate proper
coding techniques for using the libpng reference library. As a result,
@@ -104,7 +104,7 @@
unpacked the source code.
For MSVC, set up the necessary environment variables by invoking
-
+
%devstudio%\vc\bin\vcvars32.bat
where where %devstudio% is the installation directory for MSVC /
@@ -165,19 +165,19 @@
rpng is a simple PNG viewer that can display transparent PNGs with a
specified background color; for example,
- rpng -bgcolor \#ff0000 toucan.png
+ rpng -bgcolor \#ff0000 toucan.png
would display the image with a red background. rpng2 is a progressive
viewer that simulates a web browser in some respects; it can display
images against either a background color or a dynamically generated
background image. For example:
- rpng2 -bgpat 16 toucan.png
+ rpng2 -bgpat 16 toucan.png
wpng is a purely command-line image converter from binary PBMPLUS/NetPBM
format (.pgm or .ppm) to PNG; for example,
- wpng -time < toucan-notrans.ppm > toucan-notrans.png
+ wpng -time < toucan-notrans.ppm > toucan-notrans.png
would convert the specified PPM file (using redirection) to PNG, auto-
matically setting the PNG modification-time chunk.
diff --git a/contrib/gregbook/makevms.com b/contrib/gregbook/makevms.com
index bd37dc0..f32bcab 100644
--- a/contrib/gregbook/makevms.com
+++ b/contrib/gregbook/makevms.com
@@ -20,13 +20,13 @@
$ then
$ write sys$output "zlib include not found. Exiting..."
$ exit 2
-$ endif
+$ endif
$!
$ if pngpath .eqs. ""
$ then
$ write sys$output "libpng include not found. Exiting..."
$ exit 2
-$ endif
+$ endif
$!
$! Look for the compiler used.
$!
diff --git a/contrib/gregbook/readpng.c b/contrib/gregbook/readpng.c
index abfc1fb..df42c30 100644
--- a/contrib/gregbook/readpng.c
+++ b/contrib/gregbook/readpng.c
@@ -229,8 +229,14 @@
png_set_expand(png_ptr);
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
png_set_expand(png_ptr);
+#ifdef PNG_READ_16_TO_8_SUPPORTED
if (bit_depth == 16)
+# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ png_set_scale_16(png_ptr);
+# else
png_set_strip_16(png_ptr);
+# endif
+#endif
if (color_type == PNG_COLOR_TYPE_GRAY ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
png_set_gray_to_rgb(png_ptr);
@@ -263,7 +269,8 @@
return NULL;
}
- Trace((stderr, "readpng_get_image: channels = %d, rowbytes = %ld, height = %ld\n", *pChannels, rowbytes, height));
+ Trace((stderr, "readpng_get_image: channels = %d, rowbytes = %ld, height = %ld\n",
+ *pChannels, rowbytes, height));
/* set the individual row_pointers to point at the correct offsets */
diff --git a/contrib/gregbook/readpng2.c b/contrib/gregbook/readpng2.c
index 7e056c7..b9746b7 100644
--- a/contrib/gregbook/readpng2.c
+++ b/contrib/gregbook/readpng2.c
@@ -55,8 +55,10 @@
#include <stdlib.h> /* for exit() prototype */
+#include <setjmp.h>
-#include "png.h" /* libpng header; includes zlib.h and setjmp.h */
+#include <zlib.h>
+#include "png.h" /* libpng header from the local directory */
#include "readpng2.h" /* typedefs, common macros, public prototypes */
@@ -216,7 +218,11 @@
mainprog_info *mainprog_ptr;
int color_type, bit_depth;
png_uint_32 width, height;
+#ifdef PNG_FLOATING_POINT_SUPPORTED
double gamma;
+#else
+ png_fixed_point gamma;
+#endif
/* setjmp() doesn't make sense here, because we'd either have to exit(),
@@ -305,8 +311,14 @@
png_set_expand(png_ptr);
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
png_set_expand(png_ptr);
+#ifdef PNG_READ_16_TO_8_SUPPORTED
if (bit_depth == 16)
+# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ png_set_scale_16(png_ptr);
+# else
png_set_strip_16(png_ptr);
+# endif
+#endif
if (color_type == PNG_COLOR_TYPE_GRAY ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
png_set_gray_to_rgb(png_ptr);
@@ -327,11 +339,19 @@
* "gamma" value for the entire display system, i.e., the product of
* LUT_exponent and CRT_exponent. */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
if (png_get_gAMA(png_ptr, info_ptr, &gamma))
png_set_gamma(png_ptr, mainprog_ptr->display_exponent, gamma);
else
png_set_gamma(png_ptr, mainprog_ptr->display_exponent, 0.45455);
-
+#else
+ if (png_get_gAMA_fixed(png_ptr, info_ptr, &gamma))
+ png_set_gamma_fixed(png_ptr,
+ (png_fixed_point)(100000*mainprog_ptr->display_exponent+.5), gamma);
+ else
+ png_set_gamma_fixed(png_ptr,
+ (png_fixed_point)(100000*mainprog_ptr->display_exponent+.5), 45455);
+#endif
/* we'll let libpng expand interlaced images, too */
@@ -480,5 +500,12 @@
exit(99);
}
+ /* Now we have our data structure we can use the information in it
+ * to return control to our own higher level code (all the points
+ * where 'setjmp' is called in this file.) This will work with other
+ * error handling mechanisms as well - libpng always calls png_error
+ * when it can proceed no further, thus, so long as the error handler
+ * is intercepted, application code can do its own error recovery.
+ */
longjmp(mainprog_ptr->jmpbuf, 1);
}
diff --git a/contrib/gregbook/rpng-x.c b/contrib/gregbook/rpng-x.c
index 0a98170..6d10e1b 100644
--- a/contrib/gregbook/rpng-x.c
+++ b/contrib/gregbook/rpng-x.c
@@ -81,8 +81,8 @@
#define PROGNAME "rpng-x"
#define LONGNAME "Simple PNG Viewer for X"
#define VERSION "2.01 of 16 March 2008"
-#define RESNAME "rpng" /* our X resource application name */
-#define RESCLASS "Rpng" /* our X resource class name */
+#define RESNAME "rpng" /* our X resource application name */
+#define RESCLASS "Rpng" /* our X resource class name */
#include <stdio.h>
#include <stdlib.h>
@@ -252,8 +252,8 @@
else {
bgstr = *argv;
if (strlen(bgstr) != 7 || bgstr[0] != '#')
- ++error;
- else
+ ++error;
+ else
have_bg = TRUE;
}
} else {
diff --git a/contrib/gregbook/rpng2-win.c b/contrib/gregbook/rpng2-win.c
index fbdacb5..223e737 100644
--- a/contrib/gregbook/rpng2-win.c
+++ b/contrib/gregbook/rpng2-win.c
@@ -590,7 +590,7 @@
"(unexpectedly) while reading PNG image file\n");
exit(3);
} else /* if (error) */ {
- // will print error message below
+ /* will print error message below */
}
break;
}
diff --git a/contrib/gregbook/rpng2-x.c b/contrib/gregbook/rpng2-x.c
index 238ec0b..7f24b63 100644
--- a/contrib/gregbook/rpng2-x.c
+++ b/contrib/gregbook/rpng2-x.c
@@ -96,8 +96,8 @@
#define PROGNAME "rpng2-x"
#define LONGNAME "Progressive PNG Viewer for X"
#define VERSION "2.03 of 25 February 2010"
-#define RESNAME "rpng2" /* our X resource application name */
-#define RESCLASS "Rpng" /* our X resource class name */
+#define RESNAME "rpng2" /* our X resource application name */
+#define RESCLASS "Rpng" /* our X resource class name */
#include <stdio.h>
#include <stdlib.h>
@@ -132,7 +132,7 @@
(e.type == KeyPress && /* v--- or 1 for shifted keys */ \
((k = XLookupKeysym(&e.xkey, 0)) == XK_q || k == XK_Escape)))
-#define NO_24BIT_MASKS /* undef case not fully written--only for redisplay() */
+#define NO_24BIT_MASKS /* undef case not fully written--only for redisplay() */
#define rgb1_max bg_freq
#define rgb1_min bg_gray
@@ -302,7 +302,7 @@
int have_bg = FALSE;
#ifdef FEATURE_LOOP
int loop = FALSE;
- long loop_interval = -1; /* seconds (100,000 max) */
+ long loop_interval = -1; /* seconds (100,000 max) */
#endif
double LUT_exponent; /* just the lookup table */
double CRT_exponent = 2.2; /* just the monitor */
@@ -485,9 +485,6 @@
"\nPress Q, Esc or mouse button 1 (within image window, after image\n"
"is displayed) to quit.\n"
"\n", PROGNAME,
-#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
- (int)strlen(PROGNAME), " ",
-#endif
(int)strlen(PROGNAME), " ", default_display_exponent, num_bgpat-1);
exit(1);
}
@@ -594,7 +591,7 @@
"(unexpectedly) while reading PNG image file\n");
exit(3);
} else /* if (error) */ {
- // will print error message below
+ /* will print error message below */
}
break;
}
@@ -784,8 +781,9 @@
if (rpng2_x_create_window()) {
/* GRR TEMPORARY HACK: this is fundamentally no different from cases
- * above; libpng should longjmp() back to us when png_ptr goes away.
- * If we/it segfault instead, seems like a libpng bug... */
+ * above; libpng should call our error handler to longjmp() back to us
+ * when png_ptr goes away. If we/it segfault instead, seems like a
+ * libpng bug... */
/* we're here via libpng callback, so if window fails, clean and bail */
readpng2_cleanup(&rpng2_info);
@@ -1279,7 +1277,7 @@
for (row = 0; row < rpng2_info.height; ++row) {
src = bg_data + row*bg_rowbytes;
dest = ximage->data + row*ximage_rowbytes;
- if (bpp == 32) { /* slightly optimized version */
+ if (bpp == 32) { /* slightly optimized version */
for (i = rpng2_info.width; i > 0; --i) {
red = *src++;
green = *src++;
diff --git a/contrib/gregbook/writepng.c b/contrib/gregbook/writepng.c
index e6d81ea..f07f4a8 100644
--- a/contrib/gregbook/writepng.c
+++ b/contrib/gregbook/writepng.c
@@ -104,7 +104,8 @@
/* setjmp() must be called in every function that calls a PNG-writing
* libpng function, unless an alternate error handler was installed--
* but compatible error handlers must either use longjmp() themselves
- * (as in this program) or exit immediately, so here we go: */
+ * (as in this program) or some other method to return control to
+ * application code, so here we go: */
if (setjmp(mainprog_ptr->jmpbuf)) {
png_destroy_write_struct(&png_ptr, &info_ptr);
@@ -388,5 +389,12 @@
exit(99);
}
+ /* Now we have our data structure we can use the information in it
+ * to return control to our own higher level code (all the points
+ * where 'setjmp' is called in this file.) This will work with other
+ * error handling mechanisms as well - libpng always calls png_error
+ * when it can proceed no further, thus, so long as the error handler
+ * is intercepted, application code can do its own error recovery.
+ */
longjmp(mainprog_ptr->jmpbuf, 1);
}
diff --git a/contrib/libtests/pngvalid.c b/contrib/libtests/pngvalid.c
new file mode 100644
index 0000000..3dd6f21
--- /dev/null
+++ b/contrib/libtests/pngvalid.c
@@ -0,0 +1,9837 @@
+
+/* pngvalid.c - validate libpng by constructing then reading png files.
+ *
+ * Last changed in libpng 1.5.8 [%RDATE%]
+ * Copyright (c) 2012 Glenn Randers-Pehrson
+ * Written by John Cunningham Bowler
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * NOTES:
+ * This is a C program that is intended to be linked against libpng. It
+ * generates bitmaps internally, stores them as PNG files (using the
+ * sequential write code) then reads them back (using the sequential
+ * read code) and validates that the result has the correct data.
+ *
+ * The program can be modified and extended to test the correctness of
+ * transformations performed by libpng.
+ */
+
+#define _POSIX_SOURCE 1
+#define _ISOC99_SOURCE 1 /* For floating point */
+#define _GNU_SOURCE 1 /* For the floating point exception extension */
+
+#include <signal.h>
+
+#ifdef HAVE_FEENABLEEXCEPT
+# include <fenv.h>
+#endif
+
+/* Define the following to use this test against your installed libpng, rather
+ * than the one being built here:
+ */
+#ifdef PNG_FREESTANDING_TESTS
+# include <png.h>
+#else
+# include "../../png.h"
+#endif
+
+#if PNG_LIBPNG_VER < 10500
+/* This deliberately lacks the PNG_CONST. */
+typedef png_byte *png_const_bytep;
+
+/* This is copied from 1.5.1 png.h: */
+#define PNG_INTERLACE_ADAM7_PASSES 7
+#define PNG_PASS_START_ROW(pass) (((1U&~(pass))<<(3-((pass)>>1)))&7)
+#define PNG_PASS_START_COL(pass) (((1U& (pass))<<(3-(((pass)+1)>>1)))&7)
+#define PNG_PASS_ROW_SHIFT(pass) ((pass)>2?(8-(pass))>>1:3)
+#define PNG_PASS_COL_SHIFT(pass) ((pass)>1?(7-(pass))>>1:3)
+#define PNG_PASS_ROWS(height, pass) (((height)+(((1<<PNG_PASS_ROW_SHIFT(pass))\
+ -1)-PNG_PASS_START_ROW(pass)))>>PNG_PASS_ROW_SHIFT(pass))
+#define PNG_PASS_COLS(width, pass) (((width)+(((1<<PNG_PASS_COL_SHIFT(pass))\
+ -1)-PNG_PASS_START_COL(pass)))>>PNG_PASS_COL_SHIFT(pass))
+#define PNG_ROW_FROM_PASS_ROW(yIn, pass) \
+ (((yIn)<<PNG_PASS_ROW_SHIFT(pass))+PNG_PASS_START_ROW(pass))
+#define PNG_COL_FROM_PASS_COL(xIn, pass) \
+ (((xIn)<<PNG_PASS_COL_SHIFT(pass))+PNG_PASS_START_COL(pass))
+#define PNG_PASS_MASK(pass,off) ( \
+ ((0x110145AFU>>(((7-(off))-(pass))<<2)) & 0xFU) | \
+ ((0x01145AF0U>>(((7-(off))-(pass))<<2)) & 0xF0U))
+#define PNG_ROW_IN_INTERLACE_PASS(y, pass) \
+ ((PNG_PASS_MASK(pass,0) >> ((y)&7)) & 1)
+#define PNG_COL_IN_INTERLACE_PASS(x, pass) \
+ ((PNG_PASS_MASK(pass,1) >> ((x)&7)) & 1)
+
+/* These are needed too for the default build: */
+#define PNG_WRITE_16BIT_SUPPORTED
+#define PNG_READ_16BIT_SUPPORTED
+
+/* This comes from pnglibconf.h afer 1.5: */
+#define PNG_FP_1 100000
+#define PNG_GAMMA_THRESHOLD_FIXED\
+ ((png_fixed_point)(PNG_GAMMA_THRESHOLD * PNG_FP_1))
+#endif
+
+#include "zlib.h" /* For crc32 */
+
+#include <float.h> /* For floating point constants */
+#include <stdlib.h> /* For malloc */
+#include <string.h> /* For memcpy, memset */
+#include <math.h> /* For floor */
+
+/* Unused formal parameter errors are removed using the following macro which is
+ * expected to have no bad effects on performance.
+ */
+#ifndef UNUSED
+# if defined(__GNUC__) || defined(_MSC_VER)
+# define UNUSED(param) (void)param;
+# else
+# define UNUSED(param)
+# endif
+#endif
+
+/***************************** EXCEPTION HANDLING *****************************/
+#include "../visupng/cexcept.h"
+
+#ifdef __cplusplus
+# define this not_the_cpp_this
+# define new not_the_cpp_new
+# define voidcast(type, value) static_cast<type>(value)
+#else
+# define voidcast(type, value) (value)
+#endif /* __cplusplus */
+
+struct png_store;
+define_exception_type(struct png_store*);
+
+/* The following are macros to reduce typing everywhere where the well known
+ * name 'the_exception_context' must be defined.
+ */
+#define anon_context(ps) struct exception_context *the_exception_context = \
+ &(ps)->exception_context
+#define context(ps,fault) anon_context(ps); png_store *fault
+
+/******************************* UTILITIES ************************************/
+/* Error handling is particularly problematic in production code - error
+ * handlers often themselves have bugs which lead to programs that detect
+ * minor errors crashing. The following functions deal with one very
+ * common class of errors in error handlers - attempting to format error or
+ * warning messages into buffers that are too small.
+ */
+static size_t safecat(char *buffer, size_t bufsize, size_t pos,
+ PNG_CONST char *cat)
+{
+ while (pos < bufsize && cat != NULL && *cat != 0)
+ buffer[pos++] = *cat++;
+
+ if (pos >= bufsize)
+ pos = bufsize-1;
+
+ buffer[pos] = 0;
+ return pos;
+}
+
+static size_t safecatn(char *buffer, size_t bufsize, size_t pos, int n)
+{
+ char number[64];
+ sprintf(number, "%d", n);
+ return safecat(buffer, bufsize, pos, number);
+}
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+static size_t safecatd(char *buffer, size_t bufsize, size_t pos, double d,
+ int precision)
+{
+ char number[64];
+ sprintf(number, "%.*f", precision, d);
+ return safecat(buffer, bufsize, pos, number);
+}
+#endif
+
+static PNG_CONST char invalid[] = "invalid";
+static PNG_CONST char sep[] = ": ";
+
+static PNG_CONST char *colour_types[8] =
+{
+ "grayscale", invalid, "truecolour", "indexed-colour",
+ "grayscale with alpha", invalid, "truecolour with alpha", invalid
+};
+
+/* Convert a double precision value to fixed point. */
+static png_fixed_point
+fix(double d)
+{
+ d = floor(d * PNG_FP_1 + .5);
+ return (png_fixed_point)d;
+}
+
+/* Generate random bytes. This uses a boring repeatable algorithm and it
+ * is implemented here so that it gives the same set of numbers on every
+ * architecture. It's a linear congruential generator (Knuth or Sedgewick
+ * "Algorithms") but it comes from the 'feedback taps' table in Horowitz and
+ * Hill, "The Art of Electronics".
+ */
+static void
+make_random_bytes(png_uint_32* seed, void* pv, size_t size)
+{
+ png_uint_32 u0 = seed[0], u1 = seed[1];
+ png_bytep bytes = voidcast(png_bytep, pv);
+
+ /* There are thirty three bits, the next bit in the sequence is bit-33 XOR
+ * bit-20. The top 1 bit is in u1, the bottom 32 are in u0.
+ */
+ size_t i;
+ for (i=0; i<size; ++i)
+ {
+ /* First generate 8 new bits then shift them in at the end. */
+ png_uint_32 u = ((u0 >> (20-8)) ^ ((u1 << 7) | (u0 >> (32-7)))) & 0xff;
+ u1 <<= 8;
+ u1 |= u0 >> 24;
+ u0 <<= 8;
+ u0 |= u;
+ *bytes++ = (png_byte)u;
+ }
+
+ seed[0] = u0;
+ seed[1] = u1;
+}
+
+static void
+make_four_random_bytes(png_uint_32* seed, png_bytep bytes)
+{
+ make_random_bytes(seed, bytes, 4);
+}
+
+static void
+randomize(void *pv, size_t size)
+{
+ static png_uint_32 random_seed[2] = {0x56789abc, 0xd};
+ make_random_bytes(random_seed, pv, size);
+}
+
+#define RANDOMIZE(this) randomize(&(this), sizeof (this))
+
+static unsigned int
+random_mod(unsigned int max)
+{
+ unsigned int x;
+
+ RANDOMIZE(x);
+
+ return x % max; /* 0 .. max-1 */
+}
+
+static int
+random_choice(void)
+{
+ unsigned char x;
+
+ RANDOMIZE(x);
+
+ return x & 1;
+}
+
+/* A numeric ID based on PNG file characteristics. The 'do_interlace' field
+ * simply records whether pngvalid did the interlace itself or whether it
+ * was done by libpng. Width and height must be less than 256. 'palette' is an
+ * index of the palette to use for formats with a palette (0 otherwise.)
+ */
+#define FILEID(col, depth, palette, interlace, width, height, do_interlace) \
+ ((png_uint_32)((col) + ((depth)<<3) + ((palette)<<8) + ((interlace)<<13) + \
+ (((do_interlace)!=0)<<15) + ((width)<<16) + ((height)<<24)))
+
+#define COL_FROM_ID(id) ((png_byte)((id)& 0x7U))
+#define DEPTH_FROM_ID(id) ((png_byte)(((id) >> 3) & 0x1fU))
+#define PALETTE_FROM_ID(id) ((int)(((id) >> 8) & 0x1f))
+#define INTERLACE_FROM_ID(id) ((int)(((id) >> 13) & 0x3))
+#define DO_INTERLACE_FROM_ID(id) ((int)(((id)>>15) & 1))
+#define WIDTH_FROM_ID(id) (((id)>>16) & 0xff)
+#define HEIGHT_FROM_ID(id) (((id)>>24) & 0xff)
+
+/* Utility to construct a standard name for a standard image. */
+static size_t
+standard_name(char *buffer, size_t bufsize, size_t pos, png_byte colour_type,
+ int bit_depth, int npalette, int interlace_type,
+ png_uint_32 w, png_uint_32 h, int do_interlace)
+{
+ pos = safecat(buffer, bufsize, pos, colour_types[colour_type]);
+ if (npalette > 0)
+ {
+ pos = safecat(buffer, bufsize, pos, "[");
+ pos = safecatn(buffer, bufsize, pos, npalette);
+ pos = safecat(buffer, bufsize, pos, "]");
+ }
+ pos = safecat(buffer, bufsize, pos, " ");
+ pos = safecatn(buffer, bufsize, pos, bit_depth);
+ pos = safecat(buffer, bufsize, pos, " bit");
+
+ if (interlace_type != PNG_INTERLACE_NONE)
+ {
+ pos = safecat(buffer, bufsize, pos, " interlaced");
+ if (do_interlace)
+ pos = safecat(buffer, bufsize, pos, "(pngvalid)");
+ else
+ pos = safecat(buffer, bufsize, pos, "(libpng)");
+ }
+
+ if (w > 0 || h > 0)
+ {
+ pos = safecat(buffer, bufsize, pos, " ");
+ pos = safecatn(buffer, bufsize, pos, w);
+ pos = safecat(buffer, bufsize, pos, "x");
+ pos = safecatn(buffer, bufsize, pos, h);
+ }
+
+ return pos;
+}
+
+static size_t
+standard_name_from_id(char *buffer, size_t bufsize, size_t pos, png_uint_32 id)
+{
+ return standard_name(buffer, bufsize, pos, COL_FROM_ID(id),
+ DEPTH_FROM_ID(id), PALETTE_FROM_ID(id), INTERLACE_FROM_ID(id),
+ WIDTH_FROM_ID(id), HEIGHT_FROM_ID(id), DO_INTERLACE_FROM_ID(id));
+}
+
+/* Convenience API and defines to list valid formats. Note that 16 bit read and
+ * write support is required to do 16 bit read tests (we must be able to make a
+ * 16 bit image to test!)
+ */
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+# define WRITE_BDHI 4
+# ifdef PNG_READ_16BIT_SUPPORTED
+# define READ_BDHI 4
+# define DO_16BIT
+# endif
+#else
+# define WRITE_BDHI 3
+#endif
+#ifndef DO_16BIT
+# define READ_BDHI 3
+#endif
+
+/* The following defines the number of different palettes to generate for
+ * each log bit depth of a colour type 3 standard image.
+ */
+#define PALETTE_COUNT(bit_depth) ((bit_depth) > 4 ? 1 : 16)
+
+static int
+next_format(png_bytep colour_type, png_bytep bit_depth, int* palette_number)
+{
+ if (*bit_depth == 0)
+ {
+ *colour_type = 0, *bit_depth = 1, *palette_number = 0;
+ return 1;
+ }
+
+ if (*colour_type == 3)
+ {
+ /* Add multiple palettes for colour type 3. */
+ if (++*palette_number < PALETTE_COUNT(*bit_depth))
+ return 1;
+
+ *palette_number = 0;
+ }
+
+ *bit_depth = (png_byte)(*bit_depth << 1);
+
+ /* Palette images are restricted to 8 bit depth */
+ if (*bit_depth <= 8
+# ifdef DO_16BIT
+ || (*colour_type != 3 && *bit_depth <= 16)
+# endif
+ )
+ return 1;
+
+ /* Move to the next color type, or return 0 at the end. */
+ switch (*colour_type)
+ {
+ case 0:
+ *colour_type = 2;
+ *bit_depth = 8;
+ return 1;
+
+ case 2:
+ *colour_type = 3;
+ *bit_depth = 1;
+ return 1;
+
+ case 3:
+ *colour_type = 4;
+ *bit_depth = 8;
+ return 1;
+
+ case 4:
+ *colour_type = 6;
+ *bit_depth = 8;
+ return 1;
+
+ default:
+ return 0;
+ }
+}
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+static unsigned int
+sample(png_const_bytep row, png_byte colour_type, png_byte bit_depth,
+ png_uint_32 x, unsigned int sample_index)
+{
+ png_uint_32 bit_index, result;
+
+ /* Find a sample index for the desired sample: */
+ x *= bit_depth;
+ bit_index = x;
+
+ if ((colour_type & 1) == 0) /* !palette */
+ {
+ if (colour_type & 2)
+ bit_index *= 3;
+
+ if (colour_type & 4)
+ bit_index += x; /* Alpha channel */
+
+ /* Multiple channels; select one: */
+ if (colour_type & (2+4))
+ bit_index += sample_index * bit_depth;
+ }
+
+ /* Return the sample from the row as an integer. */
+ row += bit_index >> 3;
+ result = *row;
+
+ if (bit_depth == 8)
+ return result;
+
+ else if (bit_depth > 8)
+ return (result << 8) + *++row;
+
+ /* Less than 8 bits per sample. */
+ bit_index &= 7;
+ return (result >> (8-bit_index-bit_depth)) & ((1U<<bit_depth)-1);
+}
+#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
+
+/* Copy a single pixel, of a given size, from one buffer to another -
+ * while this is basically bit addressed there is an implicit assumption
+ * that pixels 8 or more bits in size are byte aligned and that pixels
+ * do not otherwise cross byte boundaries. (This is, so far as I know,
+ * universally true in bitmap computer graphics. [JCB 20101212])
+ *
+ * NOTE: The to and from buffers may be the same.
+ */
+static void
+pixel_copy(png_bytep toBuffer, png_uint_32 toIndex,
+ png_const_bytep fromBuffer, png_uint_32 fromIndex, unsigned int pixelSize)
+{
+ /* Assume we can multiply by 'size' without overflow because we are
+ * just working in a single buffer.
+ */
+ toIndex *= pixelSize;
+ fromIndex *= pixelSize;
+ if (pixelSize < 8) /* Sub-byte */
+ {
+ /* Mask to select the location of the copied pixel: */
+ unsigned int destMask = ((1U<<pixelSize)-1) << (8-pixelSize-(toIndex&7));
+ /* The following read the entire pixels and clears the extra: */
+ unsigned int destByte = toBuffer[toIndex >> 3] & ~destMask;
+ unsigned int sourceByte = fromBuffer[fromIndex >> 3];
+
+ /* Don't rely on << or >> supporting '0' here, just in case: */
+ fromIndex &= 7;
+ if (fromIndex > 0) sourceByte <<= fromIndex;
+ if ((toIndex & 7) > 0) sourceByte >>= toIndex & 7;
+
+ toBuffer[toIndex >> 3] = (png_byte)(destByte | (sourceByte & destMask));
+ }
+ else /* One or more bytes */
+ memmove(toBuffer+(toIndex>>3), fromBuffer+(fromIndex>>3), pixelSize>>3);
+}
+
+/* Copy a complete row of pixels, taking into account potential partial
+ * bytes at the end.
+ */
+static void
+row_copy(png_bytep toBuffer, png_const_bytep fromBuffer, unsigned int bitWidth)
+{
+ memcpy(toBuffer, fromBuffer, bitWidth >> 3);
+
+ if ((bitWidth & 7) != 0)
+ {
+ unsigned int mask;
+
+ toBuffer += bitWidth >> 3;
+ fromBuffer += bitWidth >> 3;
+ /* The remaining bits are in the top of the byte, the mask is the bits to
+ * retain.
+ */
+ mask = 0xff >> (bitWidth & 7);
+ *toBuffer = (png_byte)((*toBuffer & mask) | (*fromBuffer & ~mask));
+ }
+}
+
+/* Compare pixels - they are assumed to start at the first byte in the
+ * given buffers.
+ */
+static int
+pixel_cmp(png_const_bytep pa, png_const_bytep pb, png_uint_32 bit_width)
+{
+#if PNG_LIBPNG_VER < 10506
+ if (memcmp(pa, pb, bit_width>>3) == 0)
+ {
+ png_uint_32 p;
+
+ if ((bit_width & 7) == 0) return 0;
+
+ /* Ok, any differences? */
+ p = pa[bit_width >> 3];
+ p ^= pb[bit_width >> 3];
+
+ if (p == 0) return 0;
+
+ /* There are, but they may not be significant, remove the bits
+ * after the end (the low order bits in PNG.)
+ */
+ bit_width &= 7;
+ p >>= 8-bit_width;
+
+ if (p == 0) return 0;
+ }
+#else
+ /* From libpng-1.5.6 the overwrite should be fixed, so compare the trailing
+ * bits too:
+ */
+ if (memcmp(pa, pb, (bit_width+7)>>3) == 0)
+ return 0;
+#endif
+
+ /* Return the index of the changed byte. */
+ {
+ png_uint_32 where = 0;
+
+ while (pa[where] == pb[where]) ++where;
+ return 1+where;
+ }
+}
+
+/*************************** BASIC PNG FILE WRITING ***************************/
+/* A png_store takes data from the sequential writer or provides data
+ * to the sequential reader. It can also store the result of a PNG
+ * write for later retrieval.
+ */
+#define STORE_BUFFER_SIZE 500 /* arbitrary */
+typedef struct png_store_buffer
+{
+ struct png_store_buffer* prev; /* NOTE: stored in reverse order */
+ png_byte buffer[STORE_BUFFER_SIZE];
+} png_store_buffer;
+
+#define FILE_NAME_SIZE 64
+
+typedef struct store_palette_entry /* record of a single palette entry */
+{
+ png_byte red;
+ png_byte green;
+ png_byte blue;
+ png_byte alpha;
+} store_palette_entry, store_palette[256];
+
+typedef struct png_store_file
+{
+ struct png_store_file* next; /* as many as you like... */
+ char name[FILE_NAME_SIZE];
+ png_uint_32 id; /* must be correct (see FILEID) */
+ png_size_t datacount; /* In this (the last) buffer */
+ png_store_buffer data; /* Last buffer in file */
+ int npalette; /* Number of entries in palette */
+ store_palette_entry* palette; /* May be NULL */
+} png_store_file;
+
+/* The following is a pool of memory allocated by a single libpng read or write
+ * operation.
+ */
+typedef struct store_pool
+{
+ struct png_store *store; /* Back pointer */
+ struct store_memory *list; /* List of allocated memory */
+ png_byte mark[4]; /* Before and after data */
+
+ /* Statistics for this run. */
+ png_alloc_size_t max; /* Maximum single allocation */
+ png_alloc_size_t current; /* Current allocation */
+ png_alloc_size_t limit; /* Highest current allocation */
+ png_alloc_size_t total; /* Total allocation */
+
+ /* Overall statistics (retained across successive runs). */
+ png_alloc_size_t max_max;
+ png_alloc_size_t max_limit;
+ png_alloc_size_t max_total;
+} store_pool;
+
+typedef struct png_store
+{
+ /* For cexcept.h exception handling - simply store one of these;
+ * the context is a self pointer but it may point to a different
+ * png_store (in fact it never does in this program.)
+ */
+ struct exception_context
+ exception_context;
+
+ unsigned int verbose :1;
+ unsigned int treat_warnings_as_errors :1;
+ unsigned int expect_error :1;
+ unsigned int expect_warning :1;
+ unsigned int saw_warning :1;
+ unsigned int speed :1;
+ unsigned int progressive :1; /* use progressive read */
+ unsigned int validated :1; /* used as a temporary flag */
+ int nerrors;
+ int nwarnings;
+ char test[128]; /* Name of test */
+ char error[256];
+
+ /* Read fields */
+ png_structp pread; /* Used to read a saved file */
+ png_infop piread;
+ png_store_file* current; /* Set when reading */
+ png_store_buffer* next; /* Set when reading */
+ png_size_t readpos; /* Position in *next */
+ png_byte* image; /* Buffer for reading interlaced images */
+ png_size_t cb_image; /* Size of this buffer */
+ png_size_t cb_row; /* Row size of the image(s) */
+ png_uint_32 image_h; /* Number of rows in a single image */
+ store_pool read_memory_pool;
+
+ /* Write fields */
+ png_store_file* saved;
+ png_structp pwrite; /* Used when writing a new file */
+ png_infop piwrite;
+ png_size_t writepos; /* Position in .new */
+ char wname[FILE_NAME_SIZE];
+ png_store_buffer new; /* The end of the new PNG file being written. */
+ store_pool write_memory_pool;
+ store_palette_entry* palette;
+ int npalette;
+} png_store;
+
+/* Initialization and cleanup */
+static void
+store_pool_mark(png_bytep mark)
+{
+ static png_uint_32 store_seed[2] = { 0x12345678, 1};
+
+ make_four_random_bytes(store_seed, mark);
+}
+
+/* Use this for random 32 bit values; this function makes sure the result is
+ * non-zero.
+ */
+static png_uint_32
+random_32(void)
+{
+
+ for(;;)
+ {
+ png_byte mark[4];
+ png_uint_32 result;
+
+ store_pool_mark(mark);
+ result = png_get_uint_32(mark);
+
+ if (result != 0)
+ return result;
+ }
+}
+
+static void
+store_pool_init(png_store *ps, store_pool *pool)
+{
+ memset(pool, 0, sizeof *pool);
+
+ pool->store = ps;
+ pool->list = NULL;
+ pool->max = pool->current = pool->limit = pool->total = 0;
+ pool->max_max = pool->max_limit = pool->max_total = 0;
+ store_pool_mark(pool->mark);
+}
+
+static void
+store_init(png_store* ps)
+{
+ memset(ps, 0, sizeof *ps);
+ init_exception_context(&ps->exception_context);
+ store_pool_init(ps, &ps->read_memory_pool);
+ store_pool_init(ps, &ps->write_memory_pool);
+ ps->verbose = 0;
+ ps->treat_warnings_as_errors = 0;
+ ps->expect_error = 0;
+ ps->expect_warning = 0;
+ ps->saw_warning = 0;
+ ps->speed = 0;
+ ps->progressive = 0;
+ ps->validated = 0;
+ ps->nerrors = ps->nwarnings = 0;
+ ps->pread = NULL;
+ ps->piread = NULL;
+ ps->saved = ps->current = NULL;
+ ps->next = NULL;
+ ps->readpos = 0;
+ ps->image = NULL;
+ ps->cb_image = 0;
+ ps->cb_row = 0;
+ ps->image_h = 0;
+ ps->pwrite = NULL;
+ ps->piwrite = NULL;
+ ps->writepos = 0;
+ ps->new.prev = NULL;
+ ps->palette = NULL;
+ ps->npalette = 0;
+}
+
+static void
+store_freebuffer(png_store_buffer* psb)
+{
+ if (psb->prev)
+ {
+ store_freebuffer(psb->prev);
+ free(psb->prev);
+ psb->prev = NULL;
+ }
+}
+
+static void
+store_freenew(png_store *ps)
+{
+ store_freebuffer(&ps->new);
+ ps->writepos = 0;
+ if (ps->palette != NULL)
+ {
+ free(ps->palette);
+ ps->palette = NULL;
+ ps->npalette = 0;
+ }
+}
+
+static void
+store_storenew(png_store *ps)
+{
+ png_store_buffer *pb;
+
+ if (ps->writepos != STORE_BUFFER_SIZE)
+ png_error(ps->pwrite, "invalid store call");
+
+ pb = voidcast(png_store_buffer*, malloc(sizeof *pb));
+
+ if (pb == NULL)
+ png_error(ps->pwrite, "store new: OOM");
+
+ *pb = ps->new;
+ ps->new.prev = pb;
+ ps->writepos = 0;
+}
+
+static void
+store_freefile(png_store_file **ppf)
+{
+ if (*ppf != NULL)
+ {
+ store_freefile(&(*ppf)->next);
+
+ store_freebuffer(&(*ppf)->data);
+ (*ppf)->datacount = 0;
+ if ((*ppf)->palette != NULL)
+ {
+ free((*ppf)->palette);
+ (*ppf)->palette = NULL;
+ (*ppf)->npalette = 0;
+ }
+ free(*ppf);
+ *ppf = NULL;
+ }
+}
+
+/* Main interface to file storeage, after writing a new PNG file (see the API
+ * below) call store_storefile to store the result with the given name and id.
+ */
+static void
+store_storefile(png_store *ps, png_uint_32 id)
+{
+ png_store_file *pf = voidcast(png_store_file*, malloc(sizeof *pf));
+ if (pf == NULL)
+ png_error(ps->pwrite, "storefile: OOM");
+ safecat(pf->name, sizeof pf->name, 0, ps->wname);
+ pf->id = id;
+ pf->data = ps->new;
+ pf->datacount = ps->writepos;
+ ps->new.prev = NULL;
+ ps->writepos = 0;
+ pf->palette = ps->palette;
+ pf->npalette = ps->npalette;
+ ps->palette = 0;
+ ps->npalette = 0;
+
+ /* And save it. */
+ pf->next = ps->saved;
+ ps->saved = pf;
+}
+
+/* Generate an error message (in the given buffer) */
+static size_t
+store_message(png_store *ps, png_structp pp, char *buffer, size_t bufsize,
+ size_t pos, PNG_CONST char *msg)
+{
+ if (pp != NULL && pp == ps->pread)
+ {
+ /* Reading a file */
+ pos = safecat(buffer, bufsize, pos, "read: ");
+
+ if (ps->current != NULL)
+ {
+ pos = safecat(buffer, bufsize, pos, ps->current->name);
+ pos = safecat(buffer, bufsize, pos, sep);
+ }
+ }
+
+ else if (pp != NULL && pp == ps->pwrite)
+ {
+ /* Writing a file */
+ pos = safecat(buffer, bufsize, pos, "write: ");
+ pos = safecat(buffer, bufsize, pos, ps->wname);
+ pos = safecat(buffer, bufsize, pos, sep);
+ }
+
+ else
+ {
+ /* Neither reading nor writing (or a memory error in struct delete) */
+ pos = safecat(buffer, bufsize, pos, "pngvalid: ");
+ }
+
+ if (ps->test[0] != 0)
+ {
+ pos = safecat(buffer, bufsize, pos, ps->test);
+ pos = safecat(buffer, bufsize, pos, sep);
+ }
+ pos = safecat(buffer, bufsize, pos, msg);
+ return pos;
+}
+
+/* Verbose output to the error stream: */
+static void
+store_verbose(png_store *ps, png_structp pp, png_const_charp prefix,
+ png_const_charp message)
+{
+ char buffer[512];
+
+ if (prefix)
+ fputs(prefix, stderr);
+
+ (void)store_message(ps, pp, buffer, sizeof buffer, 0, message);
+ fputs(buffer, stderr);
+ fputc('\n', stderr);
+}
+
+/* Log an error or warning - the relevant count is always incremented. */
+static void
+store_log(png_store* ps, png_structp pp, png_const_charp message, int is_error)
+{
+ /* The warning is copied to the error buffer if there are no errors and it is
+ * the first warning. The error is copied to the error buffer if it is the
+ * first error (overwriting any prior warnings).
+ */
+ if (is_error ? (ps->nerrors)++ == 0 :
+ (ps->nwarnings)++ == 0 && ps->nerrors == 0)
+ store_message(ps, pp, ps->error, sizeof ps->error, 0, message);
+
+ if (ps->verbose)
+ store_verbose(ps, pp, is_error ? "error: " : "warning: ", message);
+}
+
+/* Internal error function, called with a png_store but no libpng stuff. */
+static void
+internal_error(png_store *ps, png_const_charp message)
+{
+ store_log(ps, NULL, message, 1 /* error */);
+
+ /* And finally throw an exception. */
+ {
+ struct exception_context *the_exception_context = &ps->exception_context;
+ Throw ps;
+ }
+}
+
+/* Functions to use as PNG callbacks. */
+static void
+store_error(png_structp pp, png_const_charp message) /* PNG_NORETURN */
+{
+ png_store *ps = voidcast(png_store*, png_get_error_ptr(pp));
+
+ if (!ps->expect_error)
+ store_log(ps, pp, message, 1 /* error */);
+
+ /* And finally throw an exception. */
+ {
+ struct exception_context *the_exception_context = &ps->exception_context;
+ Throw ps;
+ }
+}
+
+static void
+store_warning(png_structp pp, png_const_charp message)
+{
+ png_store *ps = voidcast(png_store*, png_get_error_ptr(pp));
+
+ if (!ps->expect_warning)
+ store_log(ps, pp, message, 0 /* warning */);
+ else
+ ps->saw_warning = 1;
+}
+
+/* These somewhat odd functions are used when reading an image to ensure that
+ * the buffer is big enough, the png_structp is for errors.
+ */
+/* Return a single row from the correct image. */
+static png_bytep
+store_image_row(PNG_CONST png_store* ps, png_structp pp, int nImage,
+ png_uint_32 y)
+{
+ png_size_t coffset = (nImage * ps->image_h + y) * (ps->cb_row + 5) + 2;
+
+ if (ps->image == NULL)
+ png_error(pp, "no allocated image");
+
+ if (coffset + ps->cb_row + 3 > ps->cb_image)
+ png_error(pp, "image too small");
+
+ return ps->image + coffset;
+}
+
+static void
+store_image_free(png_store *ps, png_structp pp)
+{
+ if (ps->image != NULL)
+ {
+ png_bytep image = ps->image;
+
+ if (image[-1] != 0xed || image[ps->cb_image] != 0xfe)
+ {
+ if (pp != NULL)
+ png_error(pp, "png_store image overwrite (1)");
+ else
+ store_log(ps, NULL, "png_store image overwrite (2)", 1);
+ }
+
+ ps->image = NULL;
+ ps->cb_image = 0;
+ --image;
+ free(image);
+ }
+}
+
+static void
+store_ensure_image(png_store *ps, png_structp pp, int nImages, png_size_t cbRow,
+ png_uint_32 cRows)
+{
+ png_size_t cb = nImages * cRows * (cbRow + 5);
+
+ if (ps->cb_image < cb)
+ {
+ png_bytep image;
+
+ store_image_free(ps, pp);
+
+ /* The buffer is deliberately mis-aligned. */
+ image = voidcast(png_bytep, malloc(cb+2));
+ if (image == NULL)
+ {
+ /* Called from the startup - ignore the error for the moment. */
+ if (pp == NULL)
+ return;
+
+ png_error(pp, "OOM allocating image buffer");
+ }
+
+ /* These magic tags are used to detect overwrites above. */
+ ++image;
+ image[-1] = 0xed;
+ image[cb] = 0xfe;
+
+ ps->image = image;
+ ps->cb_image = cb;
+ }
+
+ /* We have an adequate sized image; lay out the rows. There are 2 bytes at
+ * the start and three at the end of each (this ensures that the row
+ * alignment starts out odd - 2+1 and changes for larger images on each row.)
+ */
+ ps->cb_row = cbRow;
+ ps->image_h = cRows;
+
+ /* For error checking, the whole buffer is set to 10110010 (0xb2 - 178).
+ * This deliberately doesn't match the bits in the size test image which are
+ * outside the image; these are set to 0xff (all 1). To make the row
+ * comparison work in the 'size' test case the size rows are pre-initialized
+ * to the same value prior to calling 'standard_row'.
+ */
+ memset(ps->image, 178, cb);
+
+ /* Then put in the marks. */
+ while (--nImages >= 0)
+ {
+ png_uint_32 y;
+
+ for (y=0; y<cRows; ++y)
+ {
+ png_bytep row = store_image_row(ps, pp, nImages, y);
+
+ /* The markers: */
+ row[-2] = 190;
+ row[-1] = 239;
+ row[cbRow] = 222;
+ row[cbRow+1] = 173;
+ row[cbRow+2] = 17;
+ }
+ }
+}
+
+static void
+store_image_check(PNG_CONST png_store* ps, png_structp pp, int iImage)
+{
+ png_const_bytep image = ps->image;
+
+ if (image[-1] != 0xed || image[ps->cb_image] != 0xfe)
+ png_error(pp, "image overwrite");
+ else
+ {
+ png_size_t cbRow = ps->cb_row;
+ png_uint_32 rows = ps->image_h;
+
+ image += iImage * (cbRow+5) * ps->image_h;
+
+ image += 2; /* skip image first row markers */
+
+ while (rows-- > 0)
+ {
+ if (image[-2] != 190 || image[-1] != 239)
+ png_error(pp, "row start overwritten");
+
+ if (image[cbRow] != 222 || image[cbRow+1] != 173 ||
+ image[cbRow+2] != 17)
+ png_error(pp, "row end overwritten");
+
+ image += cbRow+5;
+ }
+ }
+}
+
+static void
+store_write(png_structp pp, png_bytep pb, png_size_t st)
+{
+ png_store *ps = voidcast(png_store*, png_get_io_ptr(pp));
+
+ if (ps->pwrite != pp)
+ png_error(pp, "store state damaged");
+
+ while (st > 0)
+ {
+ size_t cb;
+
+ if (ps->writepos >= STORE_BUFFER_SIZE)
+ store_storenew(ps);
+
+ cb = st;
+
+ if (cb > STORE_BUFFER_SIZE - ps->writepos)
+ cb = STORE_BUFFER_SIZE - ps->writepos;
+
+ memcpy(ps->new.buffer + ps->writepos, pb, cb);
+ pb += cb;
+ st -= cb;
+ ps->writepos += cb;
+ }
+}
+
+static void
+store_flush(png_structp pp)
+{
+ UNUSED(pp) /*DOES NOTHING*/
+}
+
+static size_t
+store_read_buffer_size(png_store *ps)
+{
+ /* Return the bytes available for read in the current buffer. */
+ if (ps->next != &ps->current->data)
+ return STORE_BUFFER_SIZE;
+
+ return ps->current->datacount;
+}
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+/* Return total bytes available for read. */
+static size_t
+store_read_buffer_avail(png_store *ps)
+{
+ if (ps->current != NULL && ps->next != NULL)
+ {
+ png_store_buffer *next = &ps->current->data;
+ size_t cbAvail = ps->current->datacount;
+
+ while (next != ps->next && next != NULL)
+ {
+ next = next->prev;
+ cbAvail += STORE_BUFFER_SIZE;
+ }
+
+ if (next != ps->next)
+ png_error(ps->pread, "buffer read error");
+
+ if (cbAvail > ps->readpos)
+ return cbAvail - ps->readpos;
+ }
+
+ return 0;
+}
+#endif
+
+static int
+store_read_buffer_next(png_store *ps)
+{
+ png_store_buffer *pbOld = ps->next;
+ png_store_buffer *pbNew = &ps->current->data;
+ if (pbOld != pbNew)
+ {
+ while (pbNew != NULL && pbNew->prev != pbOld)
+ pbNew = pbNew->prev;
+
+ if (pbNew != NULL)
+ {
+ ps->next = pbNew;
+ ps->readpos = 0;
+ return 1;
+ }
+
+ png_error(ps->pread, "buffer lost");
+ }
+
+ return 0; /* EOF or error */
+}
+
+/* Need separate implementation and callback to allow use of the same code
+ * during progressive read, where the io_ptr is set internally by libpng.
+ */
+static void
+store_read_imp(png_store *ps, png_bytep pb, png_size_t st)
+{
+ if (ps->current == NULL || ps->next == NULL)
+ png_error(ps->pread, "store state damaged");
+
+ while (st > 0)
+ {
+ size_t cbAvail = store_read_buffer_size(ps) - ps->readpos;
+
+ if (cbAvail > 0)
+ {
+ if (cbAvail > st) cbAvail = st;
+ memcpy(pb, ps->next->buffer + ps->readpos, cbAvail);
+ st -= cbAvail;
+ pb += cbAvail;
+ ps->readpos += cbAvail;
+ }
+
+ else if (!store_read_buffer_next(ps))
+ png_error(ps->pread, "read beyond end of file");
+ }
+}
+
+static void
+store_read(png_structp pp, png_bytep pb, png_size_t st)
+{
+ png_store *ps = voidcast(png_store*, png_get_io_ptr(pp));
+
+ if (ps == NULL || ps->pread != pp)
+ png_error(pp, "bad store read call");
+
+ store_read_imp(ps, pb, st);
+}
+
+static void
+store_progressive_read(png_store *ps, png_structp pp, png_infop pi)
+{
+ /* Notice that a call to store_read will cause this function to fail because
+ * readpos will be set.
+ */
+ if (ps->pread != pp || ps->current == NULL || ps->next == NULL)
+ png_error(pp, "store state damaged (progressive)");
+
+ do
+ {
+ if (ps->readpos != 0)
+ png_error(pp, "store_read called during progressive read");
+
+ png_process_data(pp, pi, ps->next->buffer, store_read_buffer_size(ps));
+ }
+ while (store_read_buffer_next(ps));
+}
+
+/* The caller must fill this in: */
+static store_palette_entry *
+store_write_palette(png_store *ps, int npalette)
+{
+ if (ps->pwrite == NULL)
+ store_log(ps, NULL, "attempt to write palette without write stream", 1);
+
+ if (ps->palette != NULL)
+ png_error(ps->pwrite, "multiple store_write_palette calls");
+
+ /* This function can only return NULL if called with '0'! */
+ if (npalette > 0)
+ {
+ ps->palette = voidcast(store_palette_entry*, malloc(npalette *
+ sizeof *ps->palette));
+
+ if (ps->palette == NULL)
+ png_error(ps->pwrite, "store new palette: OOM");
+
+ ps->npalette = npalette;
+ }
+
+ return ps->palette;
+}
+
+static store_palette_entry *
+store_current_palette(png_store *ps, int *npalette)
+{
+ /* This is an internal error (the call has been made outside a read
+ * operation.)
+ */
+ if (ps->current == NULL)
+ store_log(ps, ps->pread, "no current stream for palette", 1);
+
+ /* The result may be null if there is no palette. */
+ *npalette = ps->current->npalette;
+ return ps->current->palette;
+}
+
+/***************************** MEMORY MANAGEMENT*** ***************************/
+/* A store_memory is simply the header for an allocated block of memory. The
+ * pointer returned to libpng is just after the end of the header block, the
+ * allocated memory is followed by a second copy of the 'mark'.
+ */
+typedef struct store_memory
+{
+ store_pool *pool; /* Originating pool */
+ struct store_memory *next; /* Singly linked list */
+ png_alloc_size_t size; /* Size of memory allocated */
+ png_byte mark[4]; /* ID marker */
+} store_memory;
+
+/* Handle a fatal error in memory allocation. This calls png_error if the
+ * libpng struct is non-NULL, else it outputs a message and returns. This means
+ * that a memory problem while libpng is running will abort (png_error) the
+ * handling of particular file while one in cleanup (after the destroy of the
+ * struct has returned) will simply keep going and free (or attempt to free)
+ * all the memory.
+ */
+static void
+store_pool_error(png_store *ps, png_structp pp, PNG_CONST char *msg)
+{
+ if (pp != NULL)
+ png_error(pp, msg);
+
+ /* Else we have to do it ourselves. png_error eventually calls store_log,
+ * above. store_log accepts a NULL png_structp - it just changes what gets
+ * output by store_message.
+ */
+ store_log(ps, pp, msg, 1 /* error */);
+}
+
+static void
+store_memory_free(png_structp pp, store_pool *pool, store_memory *memory)
+{
+ /* Note that pp may be NULL (see store_pool_delete below), the caller has
+ * found 'memory' in pool->list *and* unlinked this entry, so this is a valid
+ * pointer (for sure), but the contents may have been trashed.
+ */
+ if (memory->pool != pool)
+ store_pool_error(pool->store, pp, "memory corrupted (pool)");
+
+ else if (memcmp(memory->mark, pool->mark, sizeof memory->mark) != 0)
+ store_pool_error(pool->store, pp, "memory corrupted (start)");
+
+ /* It should be safe to read the size field now. */
+ else
+ {
+ png_alloc_size_t cb = memory->size;
+
+ if (cb > pool->max)
+ store_pool_error(pool->store, pp, "memory corrupted (size)");
+
+ else if (memcmp((png_bytep)(memory+1)+cb, pool->mark, sizeof pool->mark)
+ != 0)
+ store_pool_error(pool->store, pp, "memory corrupted (end)");
+
+ /* Finally give the library a chance to find problems too: */
+ else
+ {
+ pool->current -= cb;
+ free(memory);
+ }
+ }
+}
+
+static void
+store_pool_delete(png_store *ps, store_pool *pool)
+{
+ if (pool->list != NULL)
+ {
+ fprintf(stderr, "%s: %s %s: memory lost (list follows):\n", ps->test,
+ pool == &ps->read_memory_pool ? "read" : "write",
+ pool == &ps->read_memory_pool ? (ps->current != NULL ?
+ ps->current->name : "unknown file") : ps->wname);
+ ++ps->nerrors;
+
+ do
+ {
+ store_memory *next = pool->list;
+ pool->list = next->next;
+ next->next = NULL;
+
+ fprintf(stderr, "\t%lu bytes @ %p\n",
+ (unsigned long)next->size, (PNG_CONST void*)(next+1));
+ /* The NULL means this will always return, even if the memory is
+ * corrupted.
+ */
+ store_memory_free(NULL, pool, next);
+ }
+ while (pool->list != NULL);
+ }
+
+ /* And reset the other fields too for the next time. */
+ if (pool->max > pool->max_max) pool->max_max = pool->max;
+ pool->max = 0;
+ if (pool->current != 0) /* unexpected internal error */
+ fprintf(stderr, "%s: %s %s: memory counter mismatch (internal error)\n",
+ ps->test, pool == &ps->read_memory_pool ? "read" : "write",
+ pool == &ps->read_memory_pool ? (ps->current != NULL ?
+ ps->current->name : "unknown file") : ps->wname);
+ pool->current = 0;
+
+ if (pool->limit > pool->max_limit)
+ pool->max_limit = pool->limit;
+
+ pool->limit = 0;
+
+ if (pool->total > pool->max_total)
+ pool->max_total = pool->total;
+
+ pool->total = 0;
+
+ /* Get a new mark too. */
+ store_pool_mark(pool->mark);
+}
+
+/* The memory callbacks: */
+static png_voidp
+store_malloc(png_structp pp, png_alloc_size_t cb)
+{
+ store_pool *pool = voidcast(store_pool*, png_get_mem_ptr(pp));
+ store_memory *new = voidcast(store_memory*, malloc(cb + (sizeof *new) +
+ (sizeof pool->mark)));
+
+ if (new != NULL)
+ {
+ if (cb > pool->max)
+ pool->max = cb;
+
+ pool->current += cb;
+
+ if (pool->current > pool->limit)
+ pool->limit = pool->current;
+
+ pool->total += cb;
+
+ new->size = cb;
+ memcpy(new->mark, pool->mark, sizeof new->mark);
+ memcpy((png_byte*)(new+1) + cb, pool->mark, sizeof pool->mark);
+ new->pool = pool;
+ new->next = pool->list;
+ pool->list = new;
+ ++new;
+ }
+
+ else
+ {
+ /* NOTE: the PNG user malloc function cannot use the png_ptr it is passed
+ * other than to retrieve the allocation pointer! libpng calls the
+ * store_malloc callback in two basic cases:
+ *
+ * 1) From png_malloc; png_malloc will do a png_error itself if NULL is
+ * returned.
+ * 2) From png_struct or png_info structure creation; png_malloc is
+ * to return so cleanup can be performed.
+ *
+ * To handle this store_malloc can log a message, but can't do anything
+ * else.
+ */
+ store_log(pool->store, pp, "out of memory", 1 /* is_error */);
+ }
+
+ return new;
+}
+
+static void
+store_free(png_structp pp, png_voidp memory)
+{
+ store_pool *pool = voidcast(store_pool*, png_get_mem_ptr(pp));
+ store_memory *this = voidcast(store_memory*, memory), **test;
+
+ /* Because libpng calls store_free with a dummy png_struct when deleting
+ * png_struct or png_info via png_destroy_struct_2 it is necessary to check
+ * the passed in png_structp to ensure it is valid, and not pass it to
+ * png_error if it is not.
+ */
+ if (pp != pool->store->pread && pp != pool->store->pwrite)
+ pp = NULL;
+
+ /* First check that this 'memory' really is valid memory - it must be in the
+ * pool list. If it is, use the shared memory_free function to free it.
+ */
+ --this;
+ for (test = &pool->list; *test != this; test = &(*test)->next)
+ {
+ if (*test == NULL)
+ {
+ store_pool_error(pool->store, pp, "bad pointer to free");
+ return;
+ }
+ }
+
+ /* Unlink this entry, *test == this. */
+ *test = this->next;
+ this->next = NULL;
+ store_memory_free(pp, pool, this);
+}
+
+/* Setup functions. */
+/* Cleanup when aborting a write or after storing the new file. */
+static void
+store_write_reset(png_store *ps)
+{
+ if (ps->pwrite != NULL)
+ {
+ anon_context(ps);
+
+ Try
+ png_destroy_write_struct(&ps->pwrite, &ps->piwrite);
+
+ Catch_anonymous
+ {
+ /* memory corruption: continue. */
+ }
+
+ ps->pwrite = NULL;
+ ps->piwrite = NULL;
+ }
+
+ /* And make sure that all the memory has been freed - this will output
+ * spurious errors in the case of memory corruption above, but this is safe.
+ */
+ store_pool_delete(ps, &ps->write_memory_pool);
+
+ store_freenew(ps);
+}
+
+/* The following is the main write function, it returns a png_struct and,
+ * optionally, a png_info suitable for writiing a new PNG file. Use
+ * store_storefile above to record this file after it has been written. The
+ * returned libpng structures as destroyed by store_write_reset above.
+ */
+static png_structp
+set_store_for_write(png_store *ps, png_infopp ppi,
+ PNG_CONST char * volatile name)
+{
+ anon_context(ps);
+
+ Try
+ {
+ if (ps->pwrite != NULL)
+ png_error(ps->pwrite, "write store already in use");
+
+ store_write_reset(ps);
+ safecat(ps->wname, sizeof ps->wname, 0, name);
+
+ /* Don't do the slow memory checks if doing a speed test. */
+ if (ps->speed)
+ ps->pwrite = png_create_write_struct(PNG_LIBPNG_VER_STRING,
+ ps, store_error, store_warning);
+
+ else
+ ps->pwrite = png_create_write_struct_2(PNG_LIBPNG_VER_STRING,
+ ps, store_error, store_warning, &ps->write_memory_pool,
+ store_malloc, store_free);
+
+ png_set_write_fn(ps->pwrite, ps, store_write, store_flush);
+
+ if (ppi != NULL)
+ *ppi = ps->piwrite = png_create_info_struct(ps->pwrite);
+ }
+
+ Catch_anonymous
+ return NULL;
+
+ return ps->pwrite;
+}
+
+/* Cleanup when finished reading (either due to error or in the success case).
+ */
+static void
+store_read_reset(png_store *ps)
+{
+ if (ps->pread != NULL)
+ {
+ anon_context(ps);
+
+ Try
+ png_destroy_read_struct(&ps->pread, &ps->piread, NULL);
+
+ Catch_anonymous
+ {
+ /* error already output: continue */
+ }
+
+ ps->pread = NULL;
+ ps->piread = NULL;
+ }
+
+ /* Always do this to be safe. */
+ store_pool_delete(ps, &ps->read_memory_pool);
+
+ ps->current = NULL;
+ ps->next = NULL;
+ ps->readpos = 0;
+ ps->validated = 0;
+}
+
+static void
+store_read_set(png_store *ps, png_uint_32 id)
+{
+ png_store_file *pf = ps->saved;
+
+ while (pf != NULL)
+ {
+ if (pf->id == id)
+ {
+ ps->current = pf;
+ ps->next = NULL;
+ store_read_buffer_next(ps);
+ return;
+ }
+
+ pf = pf->next;
+ }
+
+ {
+ size_t pos;
+ char msg[FILE_NAME_SIZE+64];
+
+ pos = standard_name_from_id(msg, sizeof msg, 0, id);
+ pos = safecat(msg, sizeof msg, pos, ": file not found");
+ png_error(ps->pread, msg);
+ }
+}
+
+/* The main interface for reading a saved file - pass the id number of the file
+ * to retrieve. Ids must be unique or the earlier file will be hidden. The API
+ * returns a png_struct and, optionally, a png_info. Both of these will be
+ * destroyed by store_read_reset above.
+ */
+static png_structp
+set_store_for_read(png_store *ps, png_infopp ppi, png_uint_32 id,
+ PNG_CONST char *name)
+{
+ /* Set the name for png_error */
+ safecat(ps->test, sizeof ps->test, 0, name);
+
+ if (ps->pread != NULL)
+ png_error(ps->pread, "read store already in use");
+
+ store_read_reset(ps);
+
+ /* Both the create APIs can return NULL if used in their default mode
+ * (because there is no other way of handling an error because the jmp_buf
+ * by default is stored in png_struct and that has not been allocated!)
+ * However, given that store_error works correctly in these circumstances
+ * we don't ever expect NULL in this program.
+ */
+ if (ps->speed)
+ ps->pread = png_create_read_struct(PNG_LIBPNG_VER_STRING, ps,
+ store_error, store_warning);
+
+ else
+ ps->pread = png_create_read_struct_2(PNG_LIBPNG_VER_STRING, ps,
+ store_error, store_warning, &ps->read_memory_pool, store_malloc,
+ store_free);
+
+ if (ps->pread == NULL)
+ {
+ struct exception_context *the_exception_context = &ps->exception_context;
+
+ store_log(ps, NULL, "png_create_read_struct returned NULL (unexpected)",
+ 1 /*error*/);
+
+ Throw ps;
+ }
+
+ store_read_set(ps, id);
+
+ if (ppi != NULL)
+ *ppi = ps->piread = png_create_info_struct(ps->pread);
+
+ return ps->pread;
+}
+
+/* The overall cleanup of a store simply calls the above then removes all the
+ * saved files. This does not delete the store itself.
+ */
+static void
+store_delete(png_store *ps)
+{
+ store_write_reset(ps);
+ store_read_reset(ps);
+ store_freefile(&ps->saved);
+ store_image_free(ps, NULL);
+}
+
+/*********************** PNG FILE MODIFICATION ON READ ************************/
+/* Files may be modified on read. The following structure contains a complete
+ * png_store together with extra members to handle modification and a special
+ * read callback for libpng. To use this the 'modifications' field must be set
+ * to a list of png_modification structures that actually perform the
+ * modification, otherwise a png_modifier is functionally equivalent to a
+ * png_store. There is a special read function, set_modifier_for_read, which
+ * replaces set_store_for_read.
+ */
+typedef enum modifier_state
+{
+ modifier_start, /* Initial value */
+ modifier_signature, /* Have a signature */
+ modifier_IHDR /* Have an IHDR */
+} modifier_state;
+
+typedef struct CIE_color
+{
+ /* A single CIE tristimulus value, representing the unique response of a
+ * standard observer to a variety of light spectra. The observer recognizes
+ * all spectra that produce this response as the same color, therefore this
+ * is effectively a description of a color.
+ */
+ double X, Y, Z;
+} CIE_color;
+
+static double
+chromaticity_x(CIE_color c)
+{
+ return c.X / (c.X + c.Y + c.Z);
+}
+
+static double
+chromaticity_y(CIE_color c)
+{
+ return c.Y / (c.X + c.Y + c.Z);
+}
+
+typedef struct color_encoding
+{
+ /* A description of an (R,G,B) encoding of color (as defined above); this
+ * includes the actual colors of the (R,G,B) triples (1,0,0), (0,1,0) and
+ * (0,0,1) plus an encoding value that is used to encode the linear
+ * components R, G and B to give the actual values R^gamma, G^gamma and
+ * B^gamma that are stored.
+ */
+ double gamma; /* Encoding (file) gamma of space */
+ CIE_color red, green, blue; /* End points */
+} color_encoding;
+
+static CIE_color
+white_point(PNG_CONST color_encoding *encoding)
+{
+ CIE_color white;
+
+ white.X = encoding->red.X + encoding->green.X + encoding->blue.X;
+ white.Y = encoding->red.Y + encoding->green.Y + encoding->blue.Y;
+ white.Z = encoding->red.Z + encoding->green.Z + encoding->blue.Z;
+
+ return white;
+}
+
+static void
+normalize_color_encoding(color_encoding *encoding)
+{
+ PNG_CONST double whiteY = encoding->red.Y + encoding->green.Y +
+ encoding->blue.Y;
+
+ if (whiteY != 1)
+ {
+ encoding->red.X /= whiteY;
+ encoding->red.Y /= whiteY;
+ encoding->red.Z /= whiteY;
+ encoding->green.X /= whiteY;
+ encoding->green.Y /= whiteY;
+ encoding->green.Z /= whiteY;
+ encoding->blue.X /= whiteY;
+ encoding->blue.Y /= whiteY;
+ encoding->blue.Z /= whiteY;
+ }
+}
+
+static size_t
+safecat_color_encoding(char *buffer, size_t bufsize, size_t pos,
+ PNG_CONST color_encoding *e, double encoding_gamma)
+{
+ if (e != 0)
+ {
+ if (encoding_gamma != 0)
+ pos = safecat(buffer, bufsize, pos, "(");
+ pos = safecat(buffer, bufsize, pos, "R(");
+ pos = safecatd(buffer, bufsize, pos, e->red.X, 4);
+ pos = safecat(buffer, bufsize, pos, ",");
+ pos = safecatd(buffer, bufsize, pos, e->red.Y, 4);
+ pos = safecat(buffer, bufsize, pos, ",");
+ pos = safecatd(buffer, bufsize, pos, e->red.Z, 4);
+ pos = safecat(buffer, bufsize, pos, "),G(");
+ pos = safecatd(buffer, bufsize, pos, e->green.X, 4);
+ pos = safecat(buffer, bufsize, pos, ",");
+ pos = safecatd(buffer, bufsize, pos, e->green.Y, 4);
+ pos = safecat(buffer, bufsize, pos, ",");
+ pos = safecatd(buffer, bufsize, pos, e->green.Z, 4);
+ pos = safecat(buffer, bufsize, pos, "),B(");
+ pos = safecatd(buffer, bufsize, pos, e->blue.X, 4);
+ pos = safecat(buffer, bufsize, pos, ",");
+ pos = safecatd(buffer, bufsize, pos, e->blue.Y, 4);
+ pos = safecat(buffer, bufsize, pos, ",");
+ pos = safecatd(buffer, bufsize, pos, e->blue.Z, 4);
+ pos = safecat(buffer, bufsize, pos, ")");
+ if (encoding_gamma != 0)
+ pos = safecat(buffer, bufsize, pos, ")");
+ }
+
+ if (encoding_gamma != 0)
+ {
+ pos = safecat(buffer, bufsize, pos, "^");
+ pos = safecatd(buffer, bufsize, pos, encoding_gamma, 5);
+ }
+
+ return pos;
+}
+
+typedef struct png_modifier
+{
+ png_store this; /* I am a png_store */
+ struct png_modification *modifications; /* Changes to make */
+
+ modifier_state state; /* My state */
+
+ /* Information from IHDR: */
+ png_byte bit_depth; /* From IHDR */
+ png_byte colour_type; /* From IHDR */
+
+ /* While handling PLTE, IDAT and IEND these chunks may be pended to allow
+ * other chunks to be inserted.
+ */
+ png_uint_32 pending_len;
+ png_uint_32 pending_chunk;
+
+ /* Test values */
+ double *gammas;
+ unsigned int ngammas;
+ unsigned int ngamma_tests; /* Number of gamma tests to run*/
+ double current_gamma; /* 0 if not set */
+ PNG_CONST color_encoding *encodings;
+ unsigned int nencodings;
+ PNG_CONST color_encoding *current_encoding; /* If an encoding has been set */
+ unsigned int encoding_counter; /* For iteration */
+ int encoding_ignored; /* Something overwrote it */
+
+ /* Control variables used to iterate through possible encodings, the
+ * following must be set to 0 and tested by the function that uses the
+ * png_modifier because the modifier only sets it to 1 (true.)
+ */
+ unsigned int repeat :1; /* Repeat this transform test. */
+ unsigned int test_uses_encoding :1;
+
+ /* Lowest sbit to test (libpng fails for sbit < 8) */
+ png_byte sbitlow;
+
+ /* Error control - these are the limits on errors accepted by the gamma tests
+ * below.
+ */
+ double maxout8; /* Maximum output value error */
+ double maxabs8; /* Absolute sample error 0..1 */
+ double maxcalc8; /* Absolute sample error 0..1 */
+ double maxpc8; /* Percentage sample error 0..100% */
+ double maxout16; /* Maximum output value error */
+ double maxabs16; /* Absolute sample error 0..1 */
+ double maxcalc16;/* Absolute sample error 0..1 */
+ double maxpc16; /* Percentage sample error 0..100% */
+
+ /* This is set by transforms that need to allow a higher limit, it is an
+ * internal check on pngvalid to ensure that the calculated error limits are
+ * not ridiculous; without this it is too easy to make a mistake in pngvalid
+ * that allows any value through.
+ */
+ double limit; /* limit on error values, normally 4E-3 */
+
+ /* Log limits - values above this are logged, but not necessarily
+ * warned.
+ */
+ double log8; /* Absolute error in 8 bits to log */
+ double log16; /* Absolute error in 16 bits to log */
+
+ /* Logged 8 and 16 bit errors ('output' values): */
+ double error_gray_2;
+ double error_gray_4;
+ double error_gray_8;
+ double error_gray_16;
+ double error_color_8;
+ double error_color_16;
+ double error_indexed;
+
+ /* Flags: */
+ /* Whether to call png_read_update_info, not png_read_start_image, and how
+ * many times to call it.
+ */
+ int use_update_info;
+
+ /* Whether or not to interlace. */
+ int interlace_type :9; /* int, but must store '1' */
+
+ /* Run the standard tests? */
+ unsigned int test_standard :1;
+
+ /* Run the odd-sized image and interlace read/write tests? */
+ unsigned int test_size :1;
+
+ /* Run tests on reading with a combiniation of transforms, */
+ unsigned int test_transform :1;
+
+ /* When to use the use_input_precision option: */
+ unsigned int use_input_precision :1;
+ unsigned int use_input_precision_sbit :1;
+ unsigned int use_input_precision_16to8 :1;
+
+ /* If set assume that the calculation bit depth is set by the input
+ * precision, not the output precision.
+ */
+ unsigned int calculations_use_input_precision :1;
+
+ /* If set assume that the calculations are done in 16 bits even if both input
+ * and output are 8 bit or less.
+ */
+ unsigned int assume_16_bit_calculations :1;
+
+ /* Which gamma tests to run: */
+ unsigned int test_gamma_threshold :1;
+ unsigned int test_gamma_transform :1; /* main tests */
+ unsigned int test_gamma_sbit :1;
+ unsigned int test_gamma_scale16 :1;
+ unsigned int test_gamma_background :1;
+ unsigned int test_gamma_alpha_mode :1;
+ unsigned int test_gamma_expand16 :1;
+ unsigned int test_exhaustive :1;
+
+ unsigned int log :1; /* Log max error */
+
+ /* Buffer information, the buffer size limits the size of the chunks that can
+ * be modified - they must fit (including header and CRC) into the buffer!
+ */
+ size_t flush; /* Count of bytes to flush */
+ size_t buffer_count; /* Bytes in buffer */
+ size_t buffer_position; /* Position in buffer */
+ png_byte buffer[1024];
+} png_modifier;
+
+/* This returns true if the test should be stopped now because it has already
+ * failed and it is running silently.
+ */
+static int fail(png_modifier *pm)
+{
+ return !pm->log && !pm->this.verbose && (pm->this.nerrors > 0 ||
+ (pm->this.treat_warnings_as_errors && pm->this.nwarnings > 0));
+}
+
+static void
+modifier_init(png_modifier *pm)
+{
+ memset(pm, 0, sizeof *pm);
+ store_init(&pm->this);
+ pm->modifications = NULL;
+ pm->state = modifier_start;
+ pm->sbitlow = 1U;
+ pm->ngammas = 0;
+ pm->ngamma_tests = 0;
+ pm->gammas = 0;
+ pm->current_gamma = 0;
+ pm->encodings = 0;
+ pm->nencodings = 0;
+ pm->current_encoding = 0;
+ pm->encoding_counter = 0;
+ pm->encoding_ignored = 0;
+ pm->repeat = 0;
+ pm->test_uses_encoding = 0;
+ pm->maxout8 = pm->maxpc8 = pm->maxabs8 = pm->maxcalc8 = 0;
+ pm->maxout16 = pm->maxpc16 = pm->maxabs16 = pm->maxcalc16 = 0;
+ pm->limit = 4E-3;
+ pm->log8 = pm->log16 = 0; /* Means 'off' */
+ pm->error_gray_2 = pm->error_gray_4 = pm->error_gray_8 = 0;
+ pm->error_gray_16 = pm->error_color_8 = pm->error_color_16 = 0;
+ pm->error_indexed = 0;
+ pm->use_update_info = 0;
+ pm->interlace_type = PNG_INTERLACE_NONE;
+ pm->test_standard = 0;
+ pm->test_size = 0;
+ pm->test_transform = 0;
+ pm->use_input_precision = 0;
+ pm->use_input_precision_sbit = 0;
+ pm->use_input_precision_16to8 = 0;
+ pm->calculations_use_input_precision = 0;
+ pm->test_gamma_threshold = 0;
+ pm->test_gamma_transform = 0;
+ pm->test_gamma_sbit = 0;
+ pm->test_gamma_scale16 = 0;
+ pm->test_gamma_background = 0;
+ pm->test_gamma_alpha_mode = 0;
+ pm->test_gamma_expand16 = 0;
+ pm->test_exhaustive = 0;
+ pm->log = 0;
+
+ /* Rely on the memset for all the other fields - there are no pointers */
+}
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+/* If pm->calculations_use_input_precision is set then operations will happen
+ * with only 8 bit precision unless both the input and output bit depth are 16.
+ *
+ * If pm->assume_16_bit_calculations is set then even 8 bit calculations use 16
+ * bit precision. This only affects those of the following limits that pertain
+ * to a calculation - not a digitization operation - unless the following API is
+ * called directly.
+ */
+static double digitize(PNG_CONST png_modifier *pm, double value,
+ int sample_depth, int do_round)
+{
+ /* 'value' is in the range 0 to 1, the result is the same value rounded to a
+ * multiple of the digitization factor - 8 or 16 bits depending on both the
+ * sample depth and the 'assume' setting. Digitization is normally by
+ * rounding and 'do_round' should be 1, if it is 0 the digitized value will
+ * be truncated.
+ */
+ PNG_CONST unsigned int digitization_factor =
+ (pm->assume_16_bit_calculations || sample_depth == 16) ? 65535 : 255;
+
+ /* Limiting the range is done as a convenience to the caller - it's easier to
+ * do it once here than every time at the call site.
+ */
+ if (value <= 0)
+ value = 0;
+ else if (value >= 1)
+ value = 1;
+
+ value *= digitization_factor;
+ if (do_round) value += .5;
+ return floor(value)/digitization_factor;
+}
+
+static double abserr(PNG_CONST png_modifier *pm, int in_depth, int out_depth)
+{
+ /* Absolute error permitted in linear values - affected by the bit depth of
+ * the calculations.
+ */
+ if (pm->assume_16_bit_calculations || (out_depth == 16 && (in_depth == 16 ||
+ !pm->calculations_use_input_precision)))
+ return pm->maxabs16;
+ else
+ return pm->maxabs8;
+}
+
+static double calcerr(PNG_CONST png_modifier *pm, int in_depth, int out_depth)
+{
+ /* Error in the linear composition arithmetic - only relevant when
+ * composition actually happens (0 < alpha < 1).
+ */
+ if (pm->assume_16_bit_calculations || (out_depth == 16 && (in_depth == 16 ||
+ !pm->calculations_use_input_precision)))
+ return pm->maxcalc16;
+ else
+ return pm->maxcalc8;
+}
+
+static double pcerr(PNG_CONST png_modifier *pm, int in_depth, int out_depth)
+{
+ /* Percentage error permitted in the linear values. Note that the specified
+ * value is a percentage but this routine returns a simple number.
+ */
+ if (pm->assume_16_bit_calculations || (out_depth == 16 && (in_depth == 16 ||
+ !pm->calculations_use_input_precision)))
+ return pm->maxpc16 * .01;
+ else
+ return pm->maxpc8 * .01;
+}
+
+/* Output error - the error in the encoded value. This is determined by the
+ * digitization of the output so can be +/-0.5 in the actual output value. In
+ * the expand_16 case with the current code in libpng the expand happens after
+ * all the calculations are done in 8 bit arithmetic, so even though the output
+ * depth is 16 the output error is determined by the 8 bit calculation.
+ *
+ * This limit is not determined by the bit depth of internal calculations.
+ *
+ * The specified parameter does *not* include the base .5 digitization error but
+ * it is added here.
+ */
+static double outerr(PNG_CONST png_modifier *pm, int in_depth, int out_depth)
+{
+ /* There is a serious error in the 2 and 4 bit grayscale transform because
+ * the gamma table value (8 bits) is simply shifted, not rounded, so the
+ * error in 4 bit grayscale gamma is up to the value below. This is a hack
+ * to allow pngvalid to succeed:
+ *
+ * TODO: fix this in libpng
+ */
+ if (out_depth == 2)
+ return .73182-.5;
+
+ if (out_depth == 4)
+ return .90644-.5;
+
+ if (out_depth == 16 && (in_depth == 16 ||
+ !pm->calculations_use_input_precision))
+ return pm->maxout16;
+
+ /* This is the case where the value was calculated at 8-bit precision then
+ * scaled to 16 bits.
+ */
+ else if (out_depth == 16)
+ return pm->maxout8 * 257;
+
+ else
+ return pm->maxout8;
+}
+
+/* This does the same thing as the above however it returns the value to log,
+ * rather than raising a warning. This is useful for debugging to track down
+ * exactly what set of parameters cause high error values.
+ */
+static double outlog(PNG_CONST png_modifier *pm, int in_depth, int out_depth)
+{
+ /* The command line parameters are either 8 bit (0..255) or 16 bit (0..65535)
+ * and so must be adjusted for low bit depth grayscale:
+ */
+ if (out_depth <= 8)
+ {
+ if (pm->log8 == 0) /* switched off */
+ return 256;
+
+ if (out_depth < 8)
+ return pm->log8 / 255 * ((1<<out_depth)-1);
+
+ return pm->log8;
+ }
+
+ if (out_depth == 16 && (in_depth == 16 ||
+ !pm->calculations_use_input_precision))
+ {
+ if (pm->log16 == 0)
+ return 65536;
+
+ return pm->log16;
+ }
+
+ /* This is the case where the value was calculated at 8-bit precision then
+ * scaled to 16 bits.
+ */
+ if (pm->log8 == 0)
+ return 65536;
+
+ return pm->log8 * 257;
+}
+
+/* This complements the above by providing the appropriate quantization for the
+ * final value. Normally this would just be quantization to an integral value,
+ * but in the 8 bit calculation case it's actually quantization to a multiple of
+ * 257!
+ */
+static int output_quantization_factor(PNG_CONST png_modifier *pm, int in_depth,
+ int out_depth)
+{
+ if (out_depth == 16 && in_depth != 16
+ && pm->calculations_use_input_precision)
+ return 257;
+ else
+ return 1;
+}
+
+/* One modification structure must be provided for each chunk to be modified (in
+ * fact more than one can be provided if multiple separate changes are desired
+ * for a single chunk.) Modifications include adding a new chunk when a
+ * suitable chunk does not exist.
+ *
+ * The caller of modify_fn will reset the CRC of the chunk and record 'modified'
+ * or 'added' as appropriate if the modify_fn returns 1 (true). If the
+ * modify_fn is NULL the chunk is simply removed.
+ */
+typedef struct png_modification
+{
+ struct png_modification *next;
+ png_uint_32 chunk;
+
+ /* If the following is NULL all matching chunks will be removed: */
+ int (*modify_fn)(struct png_modifier *pm,
+ struct png_modification *me, int add);
+
+ /* If the following is set to PLTE, IDAT or IEND and the chunk has not been
+ * found and modified (and there is a modify_fn) the modify_fn will be called
+ * to add the chunk before the relevant chunk.
+ */
+ png_uint_32 add;
+ unsigned int modified :1; /* Chunk was modified */
+ unsigned int added :1; /* Chunk was added */
+ unsigned int removed :1; /* Chunk was removed */
+} png_modification;
+
+static void
+modification_reset(png_modification *pmm)
+{
+ if (pmm != NULL)
+ {
+ pmm->modified = 0;
+ pmm->added = 0;
+ pmm->removed = 0;
+ modification_reset(pmm->next);
+ }
+}
+
+static void
+modification_init(png_modification *pmm)
+{
+ memset(pmm, 0, sizeof *pmm);
+ pmm->next = NULL;
+ pmm->chunk = 0;
+ pmm->modify_fn = NULL;
+ pmm->add = 0;
+ modification_reset(pmm);
+}
+
+static void
+modifier_current_encoding(PNG_CONST png_modifier *pm, color_encoding *ce)
+{
+ if (pm->current_encoding != 0)
+ *ce = *pm->current_encoding;
+
+ else
+ memset(ce, 0, sizeof *ce);
+
+ ce->gamma = pm->current_gamma;
+}
+
+static size_t
+safecat_current_encoding(char *buffer, size_t bufsize, size_t pos,
+ PNG_CONST png_modifier *pm)
+{
+ pos = safecat_color_encoding(buffer, bufsize, pos, pm->current_encoding,
+ pm->current_gamma);
+
+ if (pm->encoding_ignored)
+ pos = safecat(buffer, bufsize, pos, "[overridden]");
+
+ return pos;
+}
+
+/* Iterate through the usefully testable color encodings. An encoding is one
+ * of:
+ *
+ * 1) Nothing (no color space, no gamma).
+ * 2) Just a gamma value from the gamma array (including 1.0)
+ * 3) A color space from the encodings array with the corresponding gamma.
+ * 4) The same, but with gamma 1.0 (only really useful with 16 bit calculations)
+ *
+ * The iterator selects these in turn, the randomizer selects one at random,
+ * which is used depends on the setting of the 'test_exhaustive' flag. Notice
+ * that this function changes the colour space encoding so it must only be
+ * called on completion of the previous test. This is what 'modifier_reset'
+ * does, below.
+ *
+ * After the function has been called the 'repeat' flag will still be set; the
+ * caller of modifier_reset must reset it at the start of each run of the test!
+ */
+static unsigned int
+modifier_total_encodings(PNG_CONST png_modifier *pm)
+{
+ return 1 + /* (1) nothing */
+ pm->ngammas + /* (2) gamma values to test */
+ pm->nencodings + /* (3) total number of encodings */
+ /* The following test only works after the first time through the
+ * png_modifier code because 'bit_depth' is set when the IHDR is read.
+ * modifier_reset, below, preserves the setting until after it has called
+ * the iterate function (also below.)
+ *
+ * For this reason do not rely on this function outside a call to
+ * modifier_reset.
+ */
+ ((pm->bit_depth == 16 || pm->assume_16_bit_calculations) ?
+ pm->nencodings : 0); /* (4) encodings with gamma == 1.0 */
+}
+
+static void
+modifier_encoding_iterate(png_modifier *pm)
+{
+ if (!pm->repeat && /* Else something needs the current encoding again. */
+ pm->test_uses_encoding) /* Some transform is encoding dependent */
+ {
+ if (pm->test_exhaustive)
+ {
+ if (++pm->encoding_counter >= modifier_total_encodings(pm))
+ pm->encoding_counter = 0; /* This will stop the repeat */
+ }
+
+ else
+ {
+ /* Not exhaustive - choose an encoding at random; generate a number in
+ * the range 1..(max-1), so the result is always non-zero:
+ */
+ if (pm->encoding_counter == 0)
+ pm->encoding_counter = random_mod(modifier_total_encodings(pm)-1)+1;
+ else
+ pm->encoding_counter = 0;
+ }
+
+ if (pm->encoding_counter > 0)
+ pm->repeat = 1;
+ }
+
+ else if (!pm->repeat)
+ pm->encoding_counter = 0;
+}
+
+static void
+modifier_reset(png_modifier *pm)
+{
+ store_read_reset(&pm->this);
+ pm->limit = 4E-3;
+ pm->pending_len = pm->pending_chunk = 0;
+ pm->flush = pm->buffer_count = pm->buffer_position = 0;
+ pm->modifications = NULL;
+ pm->state = modifier_start;
+ modifier_encoding_iterate(pm);
+ /* The following must be set in the next run. In particular
+ * test_uses_encodings must be set in the _ini function of each transform
+ * that looks at the encodings. (Not the 'add' function!)
+ */
+ pm->test_uses_encoding = 0;
+ pm->current_gamma = 0;
+ pm->current_encoding = 0;
+ pm->encoding_ignored = 0;
+ /* These only become value after IHDR is read: */
+ pm->bit_depth = pm->colour_type = 0;
+}
+
+/* The following must be called before anything else to get the encoding set up
+ * on the modifier. In particular it must be called before the transform init
+ * functions are called.
+ */
+static void
+modifier_set_encoding(png_modifier *pm)
+{
+ /* Set the encoding to the one specified by the current encoding counter,
+ * first clear out all the settings - this corresponds to an encoding_counter
+ * of 0.
+ */
+ pm->current_gamma = 0;
+ pm->current_encoding = 0;
+ pm->encoding_ignored = 0; /* not ignored yet - happens in _ini functions. */
+
+ /* Now, if required, set the gamma and encoding fields. */
+ if (pm->encoding_counter > 0)
+ {
+ /* The gammas[] array is an array of screen gammas, not encoding gammas,
+ * so we need the inverse:
+ */
+ if (pm->encoding_counter <= pm->ngammas)
+ pm->current_gamma = 1/pm->gammas[pm->encoding_counter-1];
+
+ else
+ {
+ unsigned int i = pm->encoding_counter - pm->ngammas;
+
+ if (i >= pm->nencodings)
+ {
+ i %= pm->nencodings;
+ pm->current_gamma = 1; /* Linear, only in the 16 bit case */
+ }
+
+ else
+ pm->current_gamma = pm->encodings[i].gamma;
+
+ pm->current_encoding = pm->encodings + i;
+ }
+ }
+}
+
+/* Enquiry functions to find out what is set. Notice that there is an implicit
+ * assumption below that the first encoding in the list is the one for sRGB.
+ */
+static int
+modifier_color_encoding_is_sRGB(PNG_CONST png_modifier *pm)
+{
+ return pm->current_encoding != 0 && pm->current_encoding == pm->encodings &&
+ pm->current_encoding->gamma == pm->current_gamma;
+}
+
+static int
+modifier_color_encoding_is_set(PNG_CONST png_modifier *pm)
+{
+ return pm->current_gamma != 0;
+}
+
+/* Convenience macros. */
+#define CHUNK(a,b,c,d) (((a)<<24)+((b)<<16)+((c)<<8)+(d))
+#define CHUNK_IHDR CHUNK(73,72,68,82)
+#define CHUNK_PLTE CHUNK(80,76,84,69)
+#define CHUNK_IDAT CHUNK(73,68,65,84)
+#define CHUNK_IEND CHUNK(73,69,78,68)
+#define CHUNK_cHRM CHUNK(99,72,82,77)
+#define CHUNK_gAMA CHUNK(103,65,77,65)
+#define CHUNK_sBIT CHUNK(115,66,73,84)
+#define CHUNK_sRGB CHUNK(115,82,71,66)
+
+/* The guts of modification are performed during a read. */
+static void
+modifier_crc(png_bytep buffer)
+{
+ /* Recalculate the chunk CRC - a complete chunk must be in
+ * the buffer, at the start.
+ */
+ uInt datalen = png_get_uint_32(buffer);
+ uLong crc = crc32(0, buffer+4, datalen+4);
+ /* The cast to png_uint_32 is safe because a crc32 is always a 32 bit value.
+ */
+ png_save_uint_32(buffer+datalen+8, (png_uint_32)crc);
+}
+
+static void
+modifier_setbuffer(png_modifier *pm)
+{
+ modifier_crc(pm->buffer);
+ pm->buffer_count = png_get_uint_32(pm->buffer)+12;
+ pm->buffer_position = 0;
+}
+
+/* Separate the callback into the actual implementation (which is passed the
+ * png_modifier explicitly) and the callback, which gets the modifier from the
+ * png_struct.
+ */
+static void
+modifier_read_imp(png_modifier *pm, png_bytep pb, png_size_t st)
+{
+ while (st > 0)
+ {
+ size_t cb;
+ png_uint_32 len, chunk;
+ png_modification *mod;
+
+ if (pm->buffer_position >= pm->buffer_count) switch (pm->state)
+ {
+ static png_byte sign[8] = { 137, 80, 78, 71, 13, 10, 26, 10 };
+ case modifier_start:
+ store_read_imp(&pm->this, pm->buffer, 8); /* size of signature. */
+ pm->buffer_count = 8;
+ pm->buffer_position = 0;
+
+ if (memcmp(pm->buffer, sign, 8) != 0)
+ png_error(pm->this.pread, "invalid PNG file signature");
+ pm->state = modifier_signature;
+ break;
+
+ case modifier_signature:
+ store_read_imp(&pm->this, pm->buffer, 13+12); /* size of IHDR */
+ pm->buffer_count = 13+12;
+ pm->buffer_position = 0;
+
+ if (png_get_uint_32(pm->buffer) != 13 ||
+ png_get_uint_32(pm->buffer+4) != CHUNK_IHDR)
+ png_error(pm->this.pread, "invalid IHDR");
+
+ /* Check the list of modifiers for modifications to the IHDR. */
+ mod = pm->modifications;
+ while (mod != NULL)
+ {
+ if (mod->chunk == CHUNK_IHDR && mod->modify_fn &&
+ (*mod->modify_fn)(pm, mod, 0))
+ {
+ mod->modified = 1;
+ modifier_setbuffer(pm);
+ }
+
+ /* Ignore removal or add if IHDR! */
+ mod = mod->next;
+ }
+
+ /* Cache information from the IHDR (the modified one.) */
+ pm->bit_depth = pm->buffer[8+8];
+ pm->colour_type = pm->buffer[8+8+1];
+
+ pm->state = modifier_IHDR;
+ pm->flush = 0;
+ break;
+
+ case modifier_IHDR:
+ default:
+ /* Read a new chunk and process it until we see PLTE, IDAT or
+ * IEND. 'flush' indicates that there is still some data to
+ * output from the preceding chunk.
+ */
+ if ((cb = pm->flush) > 0)
+ {
+ if (cb > st) cb = st;
+ pm->flush -= cb;
+ store_read_imp(&pm->this, pb, cb);
+ pb += cb;
+ st -= cb;
+ if (st == 0) return;
+ }
+
+ /* No more bytes to flush, read a header, or handle a pending
+ * chunk.
+ */
+ if (pm->pending_chunk != 0)
+ {
+ png_save_uint_32(pm->buffer, pm->pending_len);
+ png_save_uint_32(pm->buffer+4, pm->pending_chunk);
+ pm->pending_len = 0;
+ pm->pending_chunk = 0;
+ }
+ else
+ store_read_imp(&pm->this, pm->buffer, 8);
+
+ pm->buffer_count = 8;
+ pm->buffer_position = 0;
+
+ /* Check for something to modify or a terminator chunk. */
+ len = png_get_uint_32(pm->buffer);
+ chunk = png_get_uint_32(pm->buffer+4);
+
+ /* Terminators first, they may have to be delayed for added
+ * chunks
+ */
+ if (chunk == CHUNK_PLTE || chunk == CHUNK_IDAT ||
+ chunk == CHUNK_IEND)
+ {
+ mod = pm->modifications;
+
+ while (mod != NULL)
+ {
+ if ((mod->add == chunk ||
+ (mod->add == CHUNK_PLTE && chunk == CHUNK_IDAT)) &&
+ mod->modify_fn != NULL && !mod->modified && !mod->added)
+ {
+ /* Regardless of what the modify function does do not run
+ * this again.
+ */
+ mod->added = 1;
+
+ if ((*mod->modify_fn)(pm, mod, 1 /*add*/))
+ {
+ /* Reset the CRC on a new chunk */
+ if (pm->buffer_count > 0)
+ modifier_setbuffer(pm);
+
+ else
+ {
+ pm->buffer_position = 0;
+ mod->removed = 1;
+ }
+
+ /* The buffer has been filled with something (we assume)
+ * so output this. Pend the current chunk.
+ */
+ pm->pending_len = len;
+ pm->pending_chunk = chunk;
+ break; /* out of while */
+ }
+ }
+
+ mod = mod->next;
+ }
+
+ /* Don't do any further processing if the buffer was modified -
+ * otherwise the code will end up modifying a chunk that was
+ * just added.
+ */
+ if (mod != NULL)
+ break; /* out of switch */
+ }
+
+ /* If we get to here then this chunk may need to be modified. To
+ * do this it must be less than 1024 bytes in total size, otherwise
+ * it just gets flushed.
+ */
+ if (len+12 <= sizeof pm->buffer)
+ {
+ store_read_imp(&pm->this, pm->buffer+pm->buffer_count,
+ len+12-pm->buffer_count);
+ pm->buffer_count = len+12;
+
+ /* Check for a modification, else leave it be. */
+ mod = pm->modifications;
+ while (mod != NULL)
+ {
+ if (mod->chunk == chunk)
+ {
+ if (mod->modify_fn == NULL)
+ {
+ /* Remove this chunk */
+ pm->buffer_count = pm->buffer_position = 0;
+ mod->removed = 1;
+ break; /* Terminate the while loop */
+ }
+
+ else if ((*mod->modify_fn)(pm, mod, 0))
+ {
+ mod->modified = 1;
+ /* The chunk may have been removed: */
+ if (pm->buffer_count == 0)
+ {
+ pm->buffer_position = 0;
+ break;
+ }
+ modifier_setbuffer(pm);
+ }
+ }
+
+ mod = mod->next;
+ }
+ }
+
+ else
+ pm->flush = len+12 - pm->buffer_count; /* data + crc */
+
+ /* Take the data from the buffer (if there is any). */
+ break;
+ }
+
+ /* Here to read from the modifier buffer (not directly from
+ * the store, as in the flush case above.)
+ */
+ cb = pm->buffer_count - pm->buffer_position;
+
+ if (cb > st)
+ cb = st;
+
+ memcpy(pb, pm->buffer + pm->buffer_position, cb);
+ st -= cb;
+ pb += cb;
+ pm->buffer_position += cb;
+ }
+}
+
+/* The callback: */
+static void
+modifier_read(png_structp pp, png_bytep pb, png_size_t st)
+{
+ png_modifier *pm = voidcast(png_modifier*, png_get_io_ptr(pp));
+
+ if (pm == NULL || pm->this.pread != pp)
+ png_error(pp, "bad modifier_read call");
+
+ modifier_read_imp(pm, pb, st);
+}
+
+/* Like store_progressive_read but the data is getting changed as we go so we
+ * need a local buffer.
+ */
+static void
+modifier_progressive_read(png_modifier *pm, png_structp pp, png_infop pi)
+{
+ if (pm->this.pread != pp || pm->this.current == NULL ||
+ pm->this.next == NULL)
+ png_error(pp, "store state damaged (progressive)");
+
+ /* This is another Horowitz and Hill random noise generator. In this case
+ * the aim is to stress the progressive reader with truly horrible variable
+ * buffer sizes in the range 1..500, so a sequence of 9 bit random numbers
+ * is generated. We could probably just count from 1 to 32767 and get as
+ * good a result.
+ */
+ for (;;)
+ {
+ static png_uint_32 noise = 1;
+ png_size_t cb, cbAvail;
+ png_byte buffer[512];
+
+ /* Generate 15 more bits of stuff: */
+ noise = (noise << 9) | ((noise ^ (noise >> (9-5))) & 0x1ff);
+ cb = noise & 0x1ff;
+
+ /* Check that this number of bytes are available (in the current buffer.)
+ * (This doesn't quite work - the modifier might delete a chunk; unlikely
+ * but possible, it doesn't happen at present because the modifier only
+ * adds chunks to standard images.)
+ */
+ cbAvail = store_read_buffer_avail(&pm->this);
+ if (pm->buffer_count > pm->buffer_position)
+ cbAvail += pm->buffer_count - pm->buffer_position;
+
+ if (cb > cbAvail)
+ {
+ /* Check for EOF: */
+ if (cbAvail == 0)
+ break;
+
+ cb = cbAvail;
+ }
+
+ modifier_read_imp(pm, buffer, cb);
+ png_process_data(pp, pi, buffer, cb);
+ }
+
+ /* Check the invariants at the end (if this fails it's a problem in this
+ * file!)
+ */
+ if (pm->buffer_count > pm->buffer_position ||
+ pm->this.next != &pm->this.current->data ||
+ pm->this.readpos < pm->this.current->datacount)
+ png_error(pp, "progressive read implementation error");
+}
+
+/* Set up a modifier. */
+static png_structp
+set_modifier_for_read(png_modifier *pm, png_infopp ppi, png_uint_32 id,
+ PNG_CONST char *name)
+{
+ /* Do this first so that the modifier fields are cleared even if an error
+ * happens allocating the png_struct. No allocation is done here so no
+ * cleanup is required.
+ */
+ pm->state = modifier_start;
+ pm->bit_depth = 0;
+ pm->colour_type = 255;
+
+ pm->pending_len = 0;
+ pm->pending_chunk = 0;
+ pm->flush = 0;
+ pm->buffer_count = 0;
+ pm->buffer_position = 0;
+
+ return set_store_for_read(&pm->this, ppi, id, name);
+}
+
+
+/******************************** MODIFICATIONS *******************************/
+/* Standard modifications to add chunks. These do not require the _SUPPORTED
+ * macros because the chunks can be there regardless of whether this specific
+ * libpng supports them.
+ */
+typedef struct gama_modification
+{
+ png_modification this;
+ png_fixed_point gamma;
+} gama_modification;
+
+static int
+gama_modify(png_modifier *pm, png_modification *me, int add)
+{
+ UNUSED(add)
+ /* This simply dumps the given gamma value into the buffer. */
+ png_save_uint_32(pm->buffer, 4);
+ png_save_uint_32(pm->buffer+4, CHUNK_gAMA);
+ png_save_uint_32(pm->buffer+8, ((gama_modification*)me)->gamma);
+ return 1;
+}
+
+static void
+gama_modification_init(gama_modification *me, png_modifier *pm, double gammad)
+{
+ double g;
+
+ modification_init(&me->this);
+ me->this.chunk = CHUNK_gAMA;
+ me->this.modify_fn = gama_modify;
+ me->this.add = CHUNK_PLTE;
+ g = fix(gammad);
+ me->gamma = (png_fixed_point)g;
+ me->this.next = pm->modifications;
+ pm->modifications = &me->this;
+}
+
+typedef struct chrm_modification
+{
+ png_modification this;
+ PNG_CONST color_encoding *encoding;
+ png_fixed_point wx, wy, rx, ry, gx, gy, bx, by;
+} chrm_modification;
+
+static int
+chrm_modify(png_modifier *pm, png_modification *me, int add)
+{
+ UNUSED(add)
+ /* As with gAMA this just adds the required cHRM chunk to the buffer. */
+ png_save_uint_32(pm->buffer , 32);
+ png_save_uint_32(pm->buffer+ 4, CHUNK_cHRM);
+ png_save_uint_32(pm->buffer+ 8, ((chrm_modification*)me)->wx);
+ png_save_uint_32(pm->buffer+12, ((chrm_modification*)me)->wy);
+ png_save_uint_32(pm->buffer+16, ((chrm_modification*)me)->rx);
+ png_save_uint_32(pm->buffer+20, ((chrm_modification*)me)->ry);
+ png_save_uint_32(pm->buffer+24, ((chrm_modification*)me)->gx);
+ png_save_uint_32(pm->buffer+28, ((chrm_modification*)me)->gy);
+ png_save_uint_32(pm->buffer+32, ((chrm_modification*)me)->bx);
+ png_save_uint_32(pm->buffer+36, ((chrm_modification*)me)->by);
+ return 1;
+}
+
+static void
+chrm_modification_init(chrm_modification *me, png_modifier *pm,
+ PNG_CONST color_encoding *encoding)
+{
+ CIE_color white = white_point(encoding);
+
+ /* Original end points: */
+ me->encoding = encoding;
+
+ /* Chromaticities (in fixed point): */
+ me->wx = fix(chromaticity_x(white));
+ me->wy = fix(chromaticity_y(white));
+
+ me->rx = fix(chromaticity_x(encoding->red));
+ me->ry = fix(chromaticity_y(encoding->red));
+ me->gx = fix(chromaticity_x(encoding->green));
+ me->gy = fix(chromaticity_y(encoding->green));
+ me->bx = fix(chromaticity_x(encoding->blue));
+ me->by = fix(chromaticity_y(encoding->blue));
+
+ modification_init(&me->this);
+ me->this.chunk = CHUNK_cHRM;
+ me->this.modify_fn = chrm_modify;
+ me->this.add = CHUNK_PLTE;
+ me->this.next = pm->modifications;
+ pm->modifications = &me->this;
+}
+
+typedef struct srgb_modification
+{
+ png_modification this;
+ png_byte intent;
+} srgb_modification;
+
+static int
+srgb_modify(png_modifier *pm, png_modification *me, int add)
+{
+ UNUSED(add)
+ /* As above, ignore add and just make a new chunk */
+ png_save_uint_32(pm->buffer, 1);
+ png_save_uint_32(pm->buffer+4, CHUNK_sRGB);
+ pm->buffer[8] = ((srgb_modification*)me)->intent;
+ return 1;
+}
+
+static void
+srgb_modification_init(srgb_modification *me, png_modifier *pm, png_byte intent)
+{
+ modification_init(&me->this);
+ me->this.chunk = CHUNK_sBIT;
+
+ if (intent <= 3) /* if valid, else *delete* sRGB chunks */
+ {
+ me->this.modify_fn = srgb_modify;
+ me->this.add = CHUNK_PLTE;
+ me->intent = intent;
+ }
+
+ else
+ {
+ me->this.modify_fn = 0;
+ me->this.add = 0;
+ me->intent = 0;
+ }
+
+ me->this.next = pm->modifications;
+ pm->modifications = &me->this;
+}
+
+typedef struct sbit_modification
+{
+ png_modification this;
+ png_byte sbit;
+} sbit_modification;
+
+static int
+sbit_modify(png_modifier *pm, png_modification *me, int add)
+{
+ png_byte sbit = ((sbit_modification*)me)->sbit;
+ if (pm->bit_depth > sbit)
+ {
+ int cb = 0;
+ switch (pm->colour_type)
+ {
+ case 0:
+ cb = 1;
+ break;
+
+ case 2:
+ case 3:
+ cb = 3;
+ break;
+
+ case 4:
+ cb = 2;
+ break;
+
+ case 6:
+ cb = 4;
+ break;
+
+ default:
+ png_error(pm->this.pread,
+ "unexpected colour type in sBIT modification");
+ }
+
+ png_save_uint_32(pm->buffer, cb);
+ png_save_uint_32(pm->buffer+4, CHUNK_sBIT);
+
+ while (cb > 0)
+ (pm->buffer+8)[--cb] = sbit;
+
+ return 1;
+ }
+ else if (!add)
+ {
+ /* Remove the sBIT chunk */
+ pm->buffer_count = pm->buffer_position = 0;
+ return 1;
+ }
+ else
+ return 0; /* do nothing */
+}
+
+static void
+sbit_modification_init(sbit_modification *me, png_modifier *pm, png_byte sbit)
+{
+ modification_init(&me->this);
+ me->this.chunk = CHUNK_sBIT;
+ me->this.modify_fn = sbit_modify;
+ me->this.add = CHUNK_PLTE;
+ me->sbit = sbit;
+ me->this.next = pm->modifications;
+ pm->modifications = &me->this;
+}
+#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
+
+/***************************** STANDARD PNG FILES *****************************/
+/* Standard files - write and save standard files. */
+/* There are two basic forms of standard images. Those which attempt to have
+ * all the possible pixel values (not possible for 16bpp images, but a range of
+ * values are produced) and those which have a range of image sizes. The former
+ * are used for testing transforms, in particular gamma correction and bit
+ * reduction and increase. The latter are reserved for testing the behavior of
+ * libpng with respect to 'odd' image sizes - particularly small images where
+ * rows become 1 byte and interlace passes disappear.
+ *
+ * The first, most useful, set are the 'transform' images, the second set of
+ * small images are the 'size' images.
+ *
+ * The transform files are constructed with rows which fit into a 1024 byte row
+ * buffer. This makes allocation easier below. Further regardless of the file
+ * format every row has 128 pixels (giving 1024 bytes for 64bpp formats).
+ *
+ * Files are stored with no gAMA or sBIT chunks, with a PLTE only when needed
+ * and with an ID derived from the colour type, bit depth and interlace type
+ * as above (FILEID). The width (128) and height (variable) are not stored in
+ * the FILEID - instead the fields are set to 0, indicating a transform file.
+ *
+ * The size files ar constructed with rows a maximum of 128 bytes wide, allowing
+ * a maximum width of 16 pixels (for the 64bpp case.) They also have a maximum
+ * height of 16 rows. The width and height are stored in the FILEID and, being
+ * non-zero, indicate a size file.
+ *
+ * For palette image (colour type 3) multiple transform images are stored with
+ * the same bit depth to allow testing of more colour combinations -
+ * particularly important for testing the gamma code because libpng uses a
+ * different code path for palette images. For size images a single palette is
+ * used.
+ */
+
+/* Make a 'standard' palette. Because there are only 256 entries in a palette
+ * (maximum) this actually makes a random palette in the hope that enough tests
+ * will catch enough errors. (Note that the same palette isn't produced every
+ * time for the same test - it depends on what previous tests have been run -
+ * but a given set of arguments to pngvalid will always produce the same palette
+ * at the same test! This is why pseudo-random number generators are useful for
+ * testing.)
+ *
+ * The store must be open for write when this is called, otherwise an internal
+ * error will occur. This routine contains its own magic number seed, so the
+ * palettes generated don't change if there are intervening errors (changing the
+ * calls to the store_mark seed.)
+ */
+static store_palette_entry *
+make_standard_palette(png_store* ps, int npalette, int do_tRNS)
+{
+ static png_uint_32 palette_seed[2] = { 0x87654321, 9 };
+
+ int i = 0;
+ png_byte values[256][4];
+
+ /* Always put in black and white plus the six primary and secondary colors.
+ */
+ for (; i<8; ++i)
+ {
+ values[i][1] = (i&1) ? 255 : 0;
+ values[i][2] = (i&2) ? 255 : 0;
+ values[i][3] = (i&4) ? 255 : 0;
+ }
+
+ /* Then add 62 grays (one quarter of the remaining 256 slots). */
+ {
+ int j = 0;
+ png_byte random_bytes[4];
+ png_byte need[256];
+
+ need[0] = 0; /*got black*/
+ memset(need+1, 1, (sizeof need)-2); /*need these*/
+ need[255] = 0; /*but not white*/
+
+ while (i<70)
+ {
+ png_byte b;
+
+ if (j==0)
+ {
+ make_four_random_bytes(palette_seed, random_bytes);
+ j = 4;
+ }
+
+ b = random_bytes[--j];
+ if (need[b])
+ {
+ values[i][1] = b;
+ values[i][2] = b;
+ values[i++][3] = b;
+ }
+ }
+ }
+
+ /* Finally add 192 colors at random - don't worry about matches to things we
+ * already have, chance is less than 1/65536. Don't worry about grays,
+ * chance is the same, so we get a duplicate or extra gray less than 1 time
+ * in 170.
+ */
+ for (; i<256; ++i)
+ make_four_random_bytes(palette_seed, values[i]);
+
+ /* Fill in the alpha values in the first byte. Just use all possible values
+ * (0..255) in an apparently random order:
+ */
+ {
+ store_palette_entry *palette;
+ png_byte selector[4];
+
+ make_four_random_bytes(palette_seed, selector);
+
+ if (do_tRNS)
+ for (i=0; i<256; ++i)
+ values[i][0] = (png_byte)(i ^ selector[0]);
+
+ else
+ for (i=0; i<256; ++i)
+ values[i][0] = 255; /* no transparency/tRNS chunk */
+
+ /* 'values' contains 256 ARGB values, but we only need 'npalette'.
+ * 'npalette' will always be a power of 2: 2, 4, 16 or 256. In the low
+ * bit depth cases select colors at random, else it is difficult to have
+ * a set of low bit depth palette test with any chance of a reasonable
+ * range of colors. Do this by randomly permuting values into the low
+ * 'npalette' entries using an XOR mask generated here. This also
+ * permutes the npalette == 256 case in a potentially useful way (there is
+ * no relationship between palette index and the color value therein!)
+ */
+ palette = store_write_palette(ps, npalette);
+
+ for (i=0; i<npalette; ++i)
+ {
+ palette[i].alpha = values[i ^ selector[1]][0];
+ palette[i].red = values[i ^ selector[1]][1];
+ palette[i].green = values[i ^ selector[1]][2];
+ palette[i].blue = values[i ^ selector[1]][3];
+ }
+
+ return palette;
+ }
+}
+
+/* Initialize a standard palette on a write stream. The 'do_tRNS' argument
+ * indicates whether or not to also set the tRNS chunk.
+ */
+static void
+init_standard_palette(png_store *ps, png_structp pp, png_infop pi, int npalette,
+ int do_tRNS)
+{
+ store_palette_entry *ppal = make_standard_palette(ps, npalette, do_tRNS);
+
+ {
+ int i;
+ png_color palette[256];
+
+ /* Set all entries to detect overread errors. */
+ for (i=0; i<npalette; ++i)
+ {
+ palette[i].red = ppal[i].red;
+ palette[i].green = ppal[i].green;
+ palette[i].blue = ppal[i].blue;
+ }
+
+ /* Just in case fill in the rest with detectable values: */
+ for (; i<256; ++i)
+ palette[i].red = palette[i].green = palette[i].blue = 42;
+
+ png_set_PLTE(pp, pi, palette, npalette);
+ }
+
+ if (do_tRNS)
+ {
+ int i, j;
+ png_byte tRNS[256];
+
+ /* Set all the entries, but skip trailing opaque entries */
+ for (i=j=0; i<npalette; ++i)
+ if ((tRNS[i] = ppal[i].alpha) < 255)
+ j = i+1;
+
+ /* Fill in the remainder with a detectable value: */
+ for (; i<256; ++i)
+ tRNS[i] = 24;
+
+ if (j > 0)
+ png_set_tRNS(pp, pi, tRNS, j, 0/*color*/);
+ }
+}
+
+/* The number of passes is related to the interlace type. There was no libpng
+ * API to determine this prior to 1.5, so we need an inquiry function:
+ */
+static int
+npasses_from_interlace_type(png_structp pp, int interlace_type)
+{
+ switch (interlace_type)
+ {
+ default:
+ png_error(pp, "invalid interlace type");
+
+ case PNG_INTERLACE_NONE:
+ return 1;
+
+ case PNG_INTERLACE_ADAM7:
+ return PNG_INTERLACE_ADAM7_PASSES;
+ }
+}
+
+static unsigned int
+bit_size(png_structp pp, png_byte colour_type, png_byte bit_depth)
+{
+ switch (colour_type)
+ {
+ default: png_error(pp, "invalid color type");
+
+ case 0: return bit_depth;
+
+ case 2: return 3*bit_depth;
+
+ case 3: return bit_depth;
+
+ case 4: return 2*bit_depth;
+
+ case 6: return 4*bit_depth;
+ }
+}
+
+#define TRANSFORM_WIDTH 128U
+#define TRANSFORM_ROWMAX (TRANSFORM_WIDTH*8U)
+#define SIZE_ROWMAX (16*8U) /* 16 pixels, max 8 bytes each - 128 bytes */
+#define STANDARD_ROWMAX TRANSFORM_ROWMAX /* The larger of the two */
+#define SIZE_HEIGHTMAX 16 /* Maximum range of size images */
+
+static size_t
+transform_rowsize(png_structp pp, png_byte colour_type, png_byte bit_depth)
+{
+ return (TRANSFORM_WIDTH * bit_size(pp, colour_type, bit_depth)) / 8;
+}
+
+/* transform_width(pp, colour_type, bit_depth) current returns the same number
+ * every time, so just use a macro:
+ */
+#define transform_width(pp, colour_type, bit_depth) TRANSFORM_WIDTH
+
+static png_uint_32
+transform_height(png_structp pp, png_byte colour_type, png_byte bit_depth)
+{
+ switch (bit_size(pp, colour_type, bit_depth))
+ {
+ case 1:
+ case 2:
+ case 4:
+ return 1; /* Total of 128 pixels */
+
+ case 8:
+ return 2; /* Total of 256 pixels/bytes */
+
+ case 16:
+ return 512; /* Total of 65536 pixels */
+
+ case 24:
+ case 32:
+ return 512; /* 65536 pixels */
+
+ case 48:
+ case 64:
+ return 2048;/* 4 x 65536 pixels. */
+# define TRANSFORM_HEIGHTMAX 2048
+
+ default:
+ return 0; /* Error, will be caught later */
+ }
+}
+
+/* The following can only be defined here, now we have the definitions
+ * of the transform image sizes.
+ */
+static png_uint_32
+standard_width(png_structp pp, png_uint_32 id)
+{
+ png_uint_32 width = WIDTH_FROM_ID(id);
+ UNUSED(pp)
+
+ if (width == 0)
+ width = transform_width(pp, COL_FROM_ID(id), DEPTH_FROM_ID(id));
+
+ return width;
+}
+
+static png_uint_32
+standard_height(png_structp pp, png_uint_32 id)
+{
+ png_uint_32 height = HEIGHT_FROM_ID(id);
+
+ if (height == 0)
+ height = transform_height(pp, COL_FROM_ID(id), DEPTH_FROM_ID(id));
+
+ return height;
+}
+
+static png_uint_32
+standard_rowsize(png_structp pp, png_uint_32 id)
+{
+ png_uint_32 width = standard_width(pp, id);
+
+ /* This won't overflow: */
+ width *= bit_size(pp, COL_FROM_ID(id), DEPTH_FROM_ID(id));
+ return (width + 7) / 8;
+}
+
+static void
+transform_row(png_structp pp, png_byte buffer[TRANSFORM_ROWMAX],
+ png_byte colour_type, png_byte bit_depth, png_uint_32 y)
+{
+ png_uint_32 v = y << 7;
+ png_uint_32 i = 0;
+
+ switch (bit_size(pp, colour_type, bit_depth))
+ {
+ case 1:
+ while (i<128/8) buffer[i] = v & 0xff, v += 17, ++i;
+ return;
+
+ case 2:
+ while (i<128/4) buffer[i] = v & 0xff, v += 33, ++i;
+ return;
+
+ case 4:
+ while (i<128/2) buffer[i] = v & 0xff, v += 65, ++i;
+ return;
+
+ case 8:
+ /* 256 bytes total, 128 bytes in each row set as follows: */
+ while (i<128) buffer[i] = v & 0xff, ++v, ++i;
+ return;
+
+ case 16:
+ /* Generate all 65536 pixel values in order, which includes the 8 bit
+ * GA case as well as the 16 bit G case.
+ */
+ while (i<128)
+ buffer[2*i] = (v>>8) & 0xff, buffer[2*i+1] = v & 0xff, ++v, ++i;
+
+ return;
+
+ case 24:
+ /* 65535 pixels, but rotate the values. */
+ while (i<128)
+ {
+ /* Three bytes per pixel, r, g, b, make b by r^g */
+ buffer[3*i+0] = (v >> 8) & 0xff;
+ buffer[3*i+1] = v & 0xff;
+ buffer[3*i+2] = ((v >> 8) ^ v) & 0xff;
+ ++v;
+ ++i;
+ }
+
+ return;
+
+ case 32:
+ /* 65535 pixels, r, g, b, a; just replicate */
+ while (i<128)
+ {
+ buffer[4*i+0] = (v >> 8) & 0xff;
+ buffer[4*i+1] = v & 0xff;
+ buffer[4*i+2] = (v >> 8) & 0xff;
+ buffer[4*i+3] = v & 0xff;
+ ++v;
+ ++i;
+ }
+
+ return;
+
+ case 48:
+ /* y is maximum 2047, giving 4x65536 pixels, make 'r' increase by 1 at
+ * each pixel, g increase by 257 (0x101) and 'b' by 0x1111:
+ */
+ while (i<128)
+ {
+ png_uint_32 t = v++;
+ buffer[6*i+0] = (t >> 8) & 0xff;
+ buffer[6*i+1] = t & 0xff;
+ t *= 257;
+ buffer[6*i+2] = (t >> 8) & 0xff;
+ buffer[6*i+3] = t & 0xff;
+ t *= 17;
+ buffer[6*i+4] = (t >> 8) & 0xff;
+ buffer[6*i+5] = t & 0xff;
+ ++i;
+ }
+
+ return;
+
+ case 64:
+ /* As above in the 32 bit case. */
+ while (i<128)
+ {
+ png_uint_32 t = v++;
+ buffer[8*i+0] = (t >> 8) & 0xff;
+ buffer[8*i+1] = t & 0xff;
+ buffer[8*i+4] = (t >> 8) & 0xff;
+ buffer[8*i+5] = t & 0xff;
+ t *= 257;
+ buffer[8*i+2] = (t >> 8) & 0xff;
+ buffer[8*i+3] = t & 0xff;
+ buffer[8*i+6] = (t >> 8) & 0xff;
+ buffer[8*i+7] = t & 0xff;
+ ++i;
+ }
+ return;
+
+ default:
+ break;
+ }
+
+ png_error(pp, "internal error");
+}
+
+/* This is just to do the right cast - could be changed to a function to check
+ * 'bd' but there isn't much point.
+ */
+#define DEPTH(bd) ((png_byte)(1U << (bd)))
+
+/* Make a standardized image given a an image colour type, bit depth and
+ * interlace type. The standard images have a very restricted range of
+ * rows and heights and are used for testing transforms rather than image
+ * layout details. See make_size_images below for a way to make images
+ * that test odd sizes along with the libpng interlace handling.
+ */
+static void
+make_transform_image(png_store* PNG_CONST ps, png_byte PNG_CONST colour_type,
+ png_byte PNG_CONST bit_depth, int palette_number, int interlace_type,
+ png_const_charp name)
+{
+ context(ps, fault);
+
+ Try
+ {
+ png_infop pi;
+ png_structp pp = set_store_for_write(ps, &pi, name);
+ png_uint_32 h;
+
+ /* In the event of a problem return control to the Catch statement below
+ * to do the clean up - it is not possible to 'return' directly from a Try
+ * block.
+ */
+ if (pp == NULL)
+ Throw ps;
+
+ h = transform_height(pp, colour_type, bit_depth);
+
+ png_set_IHDR(pp, pi, transform_width(pp, colour_type, bit_depth), h,
+ bit_depth, colour_type, interlace_type,
+ PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
+
+#ifdef PNG_TEXT_SUPPORTED
+ {
+ static char key[] = "image name"; /* must be writeable */
+ size_t pos;
+ png_text text;
+ char copy[FILE_NAME_SIZE];
+
+ /* Use a compressed text string to test the correct interaction of text
+ * compression and IDAT compression.
+ */
+ text.compression = PNG_TEXT_COMPRESSION_zTXt;
+ text.key = key;
+ /* Yuck: the text must be writable! */
+ pos = safecat(copy, sizeof copy, 0, ps->wname);
+ text.text = copy;
+ text.text_length = pos;
+ text.itxt_length = 0;
+ text.lang = 0;
+ text.lang_key = 0;
+
+ png_set_text(pp, pi, &text, 1);
+ }
+#endif
+
+ if (colour_type == 3) /* palette */
+ init_standard_palette(ps, pp, pi, 1U << bit_depth, 1/*do tRNS*/);
+
+ png_write_info(pp, pi);
+
+ if (png_get_rowbytes(pp, pi) !=
+ transform_rowsize(pp, colour_type, bit_depth))
+ png_error(pp, "row size incorrect");
+
+ else
+ {
+ /* Somewhat confusingly this must be called *after* png_write_info
+ * because if it is called before, the information in *pp has not been
+ * updated to reflect the interlaced image.
+ */
+ int npasses = png_set_interlace_handling(pp);
+ int pass;
+
+ if (npasses != npasses_from_interlace_type(pp, interlace_type))
+ png_error(pp, "write: png_set_interlace_handling failed");
+
+ for (pass=0; pass<npasses; ++pass)
+ {
+ png_uint_32 y;
+
+ for (y=0; y<h; ++y)
+ {
+ png_byte buffer[TRANSFORM_ROWMAX];
+
+ transform_row(pp, buffer, colour_type, bit_depth, y);
+ png_write_row(pp, buffer);
+ }
+ }
+ }
+
+#ifdef PNG_TEXT_SUPPORTED
+ {
+ static char key[] = "end marker";
+ static char comment[] = "end";
+ png_text text;
+
+ /* Use a compressed text string to test the correct interaction of text
+ * compression and IDAT compression.
+ */
+ text.compression = PNG_TEXT_COMPRESSION_zTXt;
+ text.key = key;
+ text.text = comment;
+ text.text_length = (sizeof comment)-1;
+ text.itxt_length = 0;
+ text.lang = 0;
+ text.lang_key = 0;
+
+ png_set_text(pp, pi, &text, 1);
+ }
+#endif
+
+ png_write_end(pp, pi);
+
+ /* And store this under the appropriate id, then clean up. */
+ store_storefile(ps, FILEID(colour_type, bit_depth, palette_number,
+ interlace_type, 0, 0, 0));
+
+ store_write_reset(ps);
+ }
+
+ Catch(fault)
+ {
+ /* Use the png_store returned by the exception. This may help the compiler
+ * because 'ps' is not used in this branch of the setjmp. Note that fault
+ * and ps will always be the same value.
+ */
+ store_write_reset(fault);
+ }
+}
+
+static void
+make_transform_images(png_store *ps)
+{
+ png_byte colour_type = 0;
+ png_byte bit_depth = 0;
+ int palette_number = 0;
+
+ /* This is in case of errors. */
+ safecat(ps->test, sizeof ps->test, 0, "make standard images");
+
+ /* Use next_format to enumerate all the combinations we test, including
+ * generating multiple low bit depth palette images.
+ */
+ while (next_format(&colour_type, &bit_depth, &palette_number))
+ {
+ int interlace_type;
+
+ for (interlace_type = PNG_INTERLACE_NONE;
+ interlace_type < PNG_INTERLACE_LAST; ++interlace_type)
+ {
+ char name[FILE_NAME_SIZE];
+
+ standard_name(name, sizeof name, 0, colour_type, bit_depth,
+ palette_number, interlace_type, 0, 0, 0);
+ make_transform_image(ps, colour_type, bit_depth, palette_number,
+ interlace_type, name);
+ }
+ }
+}
+
+/* The following two routines use the PNG interlace support macros from
+ * png.h to interlace or deinterlace rows.
+ */
+static void
+interlace_row(png_bytep buffer, png_const_bytep imageRow,
+ unsigned int pixel_size, png_uint_32 w, int pass)
+{
+ png_uint_32 xin, xout, xstep;
+
+ /* Note that this can, trivially, be optimized to a memcpy on pass 7, the
+ * code is presented this way to make it easier to understand. In practice
+ * consult the code in the libpng source to see other ways of doing this.
+ */
+ xin = PNG_PASS_START_COL(pass);
+ xstep = 1U<<PNG_PASS_COL_SHIFT(pass);
+
+ for (xout=0; xin<w; xin+=xstep)
+ {
+ pixel_copy(buffer, xout, imageRow, xin, pixel_size);
+ ++xout;
+ }
+}
+
+static void
+deinterlace_row(png_bytep buffer, png_const_bytep row,
+ unsigned int pixel_size, png_uint_32 w, int pass)
+{
+ /* The inverse of the above, 'row' is part of row 'y' of the output image,
+ * in 'buffer'. The image is 'w' wide and this is pass 'pass', distribute
+ * the pixels of row into buffer and return the number written (to allow
+ * this to be checked).
+ */
+ png_uint_32 xin, xout, xstep;
+
+ xout = PNG_PASS_START_COL(pass);
+ xstep = 1U<<PNG_PASS_COL_SHIFT(pass);
+
+ for (xin=0; xout<w; xout+=xstep)
+ {
+ pixel_copy(buffer, xout, row, xin, pixel_size);
+ ++xin;
+ }
+}
+
+/* Build a single row for the 'size' test images; this fills in only the
+ * first bit_width bits of the sample row.
+ */
+static void
+size_row(png_byte buffer[SIZE_ROWMAX], png_uint_32 bit_width, png_uint_32 y)
+{
+ /* height is in the range 1 to 16, so: */
+ y = ((y & 1) << 7) + ((y & 2) << 6) + ((y & 4) << 5) + ((y & 8) << 4);
+ /* the following ensures bits are set in small images: */
+ y ^= 0xA5;
+
+ while (bit_width >= 8)
+ *buffer++ = (png_byte)y++, bit_width -= 8;
+
+ /* There may be up to 7 remaining bits, these go in the most significant
+ * bits of the byte.
+ */
+ if (bit_width > 0)
+ {
+ png_uint_32 mask = (1U<<(8-bit_width))-1;
+ *buffer = (png_byte)((*buffer & mask) | (y & ~mask));
+ }
+}
+
+static void
+make_size_image(png_store* PNG_CONST ps, png_byte PNG_CONST colour_type,
+ png_byte PNG_CONST bit_depth, int PNG_CONST interlace_type,
+ png_uint_32 PNG_CONST w, png_uint_32 PNG_CONST h,
+ int PNG_CONST do_interlace)
+{
+ context(ps, fault);
+
+ Try
+ {
+ png_infop pi;
+ png_structp pp;
+ unsigned int pixel_size;
+
+ /* Make a name and get an appropriate id for the store: */
+ char name[FILE_NAME_SIZE];
+ PNG_CONST png_uint_32 id = FILEID(colour_type, bit_depth, 0/*palette*/,
+ interlace_type, w, h, do_interlace);
+
+ standard_name_from_id(name, sizeof name, 0, id);
+ pp = set_store_for_write(ps, &pi, name);
+
+ /* In the event of a problem return control to the Catch statement below
+ * to do the clean up - it is not possible to 'return' directly from a Try
+ * block.
+ */
+ if (pp == NULL)
+ Throw ps;
+
+ png_set_IHDR(pp, pi, w, h, bit_depth, colour_type, interlace_type,
+ PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
+
+ if (colour_type == 3) /* palette */
+ init_standard_palette(ps, pp, pi, 1U << bit_depth, 0/*do tRNS*/);
+
+ png_write_info(pp, pi);
+
+ /* Calculate the bit size, divide by 8 to get the byte size - this won't
+ * overflow because we know the w values are all small enough even for
+ * a system where 'unsigned int' is only 16 bits.
+ */
+ pixel_size = bit_size(pp, colour_type, bit_depth);
+ if (png_get_rowbytes(pp, pi) != ((w * pixel_size) + 7) / 8)
+ png_error(pp, "row size incorrect");
+
+ else
+ {
+ int npasses = npasses_from_interlace_type(pp, interlace_type);
+ png_uint_32 y;
+ int pass;
+ png_byte image[16][SIZE_ROWMAX];
+
+ /* To help consistent error detection make the parts of this buffer
+ * that aren't set below all '1':
+ */
+ memset(image, 0xff, sizeof image);
+
+ if (!do_interlace && npasses != png_set_interlace_handling(pp))
+ png_error(pp, "write: png_set_interlace_handling failed");
+
+ /* Prepare the whole image first to avoid making it 7 times: */
+ for (y=0; y<h; ++y)
+ size_row(image[y], w * pixel_size, y);
+
+ for (pass=0; pass<npasses; ++pass)
+ {
+ /* The following two are for checking the macros: */
+ PNG_CONST png_uint_32 wPass = PNG_PASS_COLS(w, pass);
+
+ /* If do_interlace is set we don't call png_write_row for every
+ * row because some of them are empty. In fact, for a 1x1 image,
+ * most of them are empty!
+ */
+ for (y=0; y<h; ++y)
+ {
+ png_const_bytep row = image[y];
+ png_byte tempRow[SIZE_ROWMAX];
+
+ /* If do_interlace *and* the image is interlaced we
+ * need a reduced interlace row; this may be reduced
+ * to empty.
+ */
+ if (do_interlace && interlace_type == PNG_INTERLACE_ADAM7)
+ {
+ /* The row must not be written if it doesn't exist, notice
+ * that there are two conditions here, either the row isn't
+ * ever in the pass or the row would be but isn't wide
+ * enough to contribute any pixels. In fact the wPass test
+ * can be used to skip the whole y loop in this case.
+ */
+ if (PNG_ROW_IN_INTERLACE_PASS(y, pass) && wPass > 0)
+ {
+ /* Set to all 1's for error detection (libpng tends to
+ * set unset things to 0).
+ */
+ memset(tempRow, 0xff, sizeof tempRow);
+ interlace_row(tempRow, row, pixel_size, w, pass);
+ row = tempRow;
+ }
+ else
+ continue;
+ }
+
+ /* Only get to here if the row has some pixels in it. */
+ png_write_row(pp, row);
+ }
+ }
+ }
+
+ png_write_end(pp, pi);
+
+ /* And store this under the appropriate id, then clean up. */
+ store_storefile(ps, id);
+
+ store_write_reset(ps);
+ }
+
+ Catch(fault)
+ {
+ /* Use the png_store returned by the exception. This may help the compiler
+ * because 'ps' is not used in this branch of the setjmp. Note that fault
+ * and ps will always be the same value.
+ */
+ store_write_reset(fault);
+ }
+}
+
+static void
+make_size(png_store* PNG_CONST ps, png_byte PNG_CONST colour_type, int bdlo,
+ int PNG_CONST bdhi)
+{
+ for (; bdlo <= bdhi; ++bdlo)
+ {
+ png_uint_32 width;
+
+ for (width = 1; width <= 16; ++width)
+ {
+ png_uint_32 height;
+
+ for (height = 1; height <= 16; ++height)
+ {
+ /* The four combinations of DIY interlace and interlace or not -
+ * no interlace + DIY should be identical to no interlace with
+ * libpng doing it.
+ */
+ make_size_image(ps, colour_type, DEPTH(bdlo), PNG_INTERLACE_NONE,
+ width, height, 0);
+ make_size_image(ps, colour_type, DEPTH(bdlo), PNG_INTERLACE_NONE,
+ width, height, 1);
+ make_size_image(ps, colour_type, DEPTH(bdlo), PNG_INTERLACE_ADAM7,
+ width, height, 0);
+ make_size_image(ps, colour_type, DEPTH(bdlo), PNG_INTERLACE_ADAM7,
+ width, height, 1);
+ }
+ }
+ }
+}
+
+static void
+make_size_images(png_store *ps)
+{
+ /* This is in case of errors. */
+ safecat(ps->test, sizeof ps->test, 0, "make size images");
+
+ /* Arguments are colour_type, low bit depth, high bit depth
+ */
+ make_size(ps, 0, 0, WRITE_BDHI);
+ make_size(ps, 2, 3, WRITE_BDHI);
+ make_size(ps, 3, 0, 3 /*palette: max 8 bits*/);
+ make_size(ps, 4, 3, WRITE_BDHI);
+ make_size(ps, 6, 3, WRITE_BDHI);
+}
+
+/* Return a row based on image id and 'y' for checking: */
+static void
+standard_row(png_structp pp, png_byte std[STANDARD_ROWMAX], png_uint_32 id,
+ png_uint_32 y)
+{
+ if (WIDTH_FROM_ID(id) == 0)
+ transform_row(pp, std, COL_FROM_ID(id), DEPTH_FROM_ID(id), y);
+ else
+ size_row(std, WIDTH_FROM_ID(id) * bit_size(pp, COL_FROM_ID(id),
+ DEPTH_FROM_ID(id)), y);
+}
+
+/* Tests - individual test cases */
+/* Like 'make_standard' but errors are deliberately introduced into the calls
+ * to ensure that they get detected - it should not be possible to write an
+ * invalid image with libpng!
+ */
+#ifdef PNG_WARNINGS_SUPPORTED
+static void
+sBIT0_error_fn(png_structp pp, png_infop pi)
+{
+ /* 0 is invalid... */
+ png_color_8 bad;
+ bad.red = bad.green = bad.blue = bad.gray = bad.alpha = 0;
+ png_set_sBIT(pp, pi, &bad);
+}
+
+static void
+sBIT_error_fn(png_structp pp, png_infop pi)
+{
+ png_byte bit_depth;
+ png_color_8 bad;
+
+ if (png_get_color_type(pp, pi) == PNG_COLOR_TYPE_PALETTE)
+ bit_depth = 8;
+
+ else
+ bit_depth = png_get_bit_depth(pp, pi);
+
+ /* Now we know the bit depth we can easily generate an invalid sBIT entry */
+ bad.red = bad.green = bad.blue = bad.gray = bad.alpha =
+ (png_byte)(bit_depth+1);
+ png_set_sBIT(pp, pi, &bad);
+}
+
+static PNG_CONST struct
+{
+ void (*fn)(png_structp, png_infop);
+ PNG_CONST char *msg;
+ unsigned int warning :1; /* the error is a warning... */
+} error_test[] =
+ {
+ /* no warnings makes these errors undetectable. */
+ { sBIT0_error_fn, "sBIT(0): failed to detect error", 1 },
+ { sBIT_error_fn, "sBIT(too big): failed to detect error", 1 },
+ };
+
+static void
+make_error(png_store* volatile psIn, png_byte PNG_CONST colour_type,
+ png_byte bit_depth, int interlace_type, int test, png_const_charp name)
+{
+ png_store * volatile ps = psIn;
+
+ context(ps, fault);
+
+ Try
+ {
+ png_structp pp;
+ png_infop pi;
+
+ pp = set_store_for_write(ps, &pi, name);
+
+ if (pp == NULL)
+ Throw ps;
+
+ png_set_IHDR(pp, pi, transform_width(pp, colour_type, bit_depth),
+ transform_height(pp, colour_type, bit_depth), bit_depth, colour_type,
+ interlace_type, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
+
+ if (colour_type == 3) /* palette */
+ init_standard_palette(ps, pp, pi, 1U << bit_depth, 0/*do tRNS*/);
+
+ /* Time for a few errors; these are in various optional chunks, the
+ * standard tests test the standard chunks pretty well.
+ */
+# define exception__prev exception_prev_1
+# define exception__env exception_env_1
+ Try
+ {
+ /* Expect this to throw: */
+ ps->expect_error = !error_test[test].warning;
+ ps->expect_warning = error_test[test].warning;
+ ps->saw_warning = 0;
+ error_test[test].fn(pp, pi);
+
+ /* Normally the error is only detected here: */
+ png_write_info(pp, pi);
+
+ /* And handle the case where it was only a warning: */
+ if (ps->expect_warning && ps->saw_warning)
+ Throw ps;
+
+ /* If we get here there is a problem, we have success - no error or
+ * no warning - when we shouldn't have success. Log an error.
+ */
+ store_log(ps, pp, error_test[test].msg, 1 /*error*/);
+ }
+
+ Catch (fault)
+ ps = fault; /* expected exit, make sure ps is not clobbered */
+#undef exception__prev
+#undef exception__env
+
+ /* And clear these flags */
+ ps->expect_error = 0;
+ ps->expect_warning = 0;
+
+ /* Now write the whole image, just to make sure that the detected, or
+ * undetected, errro has not created problems inside libpng.
+ */
+ if (png_get_rowbytes(pp, pi) !=
+ transform_rowsize(pp, colour_type, bit_depth))
+ png_error(pp, "row size incorrect");
+
+ else
+ {
+ png_uint_32 h = transform_height(pp, colour_type, bit_depth);
+ int npasses = png_set_interlace_handling(pp);
+ int pass;
+
+ if (npasses != npasses_from_interlace_type(pp, interlace_type))
+ png_error(pp, "write: png_set_interlace_handling failed");
+
+ for (pass=0; pass<npasses; ++pass)
+ {
+ png_uint_32 y;
+
+ for (y=0; y<h; ++y)
+ {
+ png_byte buffer[TRANSFORM_ROWMAX];
+
+ transform_row(pp, buffer, colour_type, bit_depth, y);
+ png_write_row(pp, buffer);
+ }
+ }
+ }
+
+ png_write_end(pp, pi);
+
+ /* The following deletes the file that was just written. */
+ store_write_reset(ps);
+ }
+
+ Catch(fault)
+ {
+ store_write_reset(fault);
+ }
+}
+
+static int
+make_errors(png_modifier* PNG_CONST pm, png_byte PNG_CONST colour_type,
+ int bdlo, int PNG_CONST bdhi)
+{
+ for (; bdlo <= bdhi; ++bdlo)
+ {
+ int interlace_type;
+
+ for (interlace_type = PNG_INTERLACE_NONE;
+ interlace_type < PNG_INTERLACE_LAST; ++interlace_type)
+ {
+ unsigned int test;
+ char name[FILE_NAME_SIZE];
+
+ standard_name(name, sizeof name, 0, colour_type, 1<<bdlo, 0,
+ interlace_type, 0, 0, 0);
+
+ for (test=0; test<(sizeof error_test)/(sizeof error_test[0]); ++test)
+ {
+ make_error(&pm->this, colour_type, DEPTH(bdlo), interlace_type,
+ test, name);
+
+ if (fail(pm))
+ return 0;
+ }
+ }
+ }
+
+ return 1; /* keep going */
+}
+#endif
+
+static void
+perform_error_test(png_modifier *pm)
+{
+#ifdef PNG_WARNINGS_SUPPORTED /* else there are no cases that work! */
+ /* Need to do this here because we just write in this test. */
+ safecat(pm->this.test, sizeof pm->this.test, 0, "error test");
+
+ if (!make_errors(pm, 0, 0, WRITE_BDHI))
+ return;
+
+ if (!make_errors(pm, 2, 3, WRITE_BDHI))
+ return;
+
+ if (!make_errors(pm, 3, 0, 3))
+ return;
+
+ if (!make_errors(pm, 4, 3, WRITE_BDHI))
+ return;
+
+ if (!make_errors(pm, 6, 3, WRITE_BDHI))
+ return;
+#else
+ UNUSED(pm)
+#endif
+}
+
+/* This is just to validate the internal PNG formatting code - if this fails
+ * then the warning messages the library outputs will probably be garbage.
+ */
+static void
+perform_formatting_test(png_store *volatile ps)
+{
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ /* The handle into the formatting code is the RFC1123 support; this test does
+ * nothing if that is compiled out.
+ */
+ context(ps, fault);
+
+ Try
+ {
+ png_const_charp correct = "29 Aug 2079 13:53:60 +0000";
+ png_const_charp result;
+ png_structp pp;
+ png_time pt;
+
+ pp = set_store_for_write(ps, NULL, "libpng formatting test");
+
+ if (pp == NULL)
+ Throw ps;
+
+
+ /* Arbitrary settings: */
+ pt.year = 2079;
+ pt.month = 8;
+ pt.day = 29;
+ pt.hour = 13;
+ pt.minute = 53;
+ pt.second = 60; /* a leap second */
+
+ result = png_convert_to_rfc1123(pp, &pt);
+
+ if (result == NULL)
+ png_error(pp, "png_convert_to_rfc1123 failed");
+
+ if (strcmp(result, correct) != 0)
+ {
+ size_t pos = 0;
+ char msg[128];
+
+ pos = safecat(msg, sizeof msg, pos, "png_convert_to_rfc1123(");
+ pos = safecat(msg, sizeof msg, pos, correct);
+ pos = safecat(msg, sizeof msg, pos, ") returned: '");
+ pos = safecat(msg, sizeof msg, pos, result);
+ pos = safecat(msg, sizeof msg, pos, "'");
+
+ png_error(pp, msg);
+ }
+
+ store_write_reset(ps);
+ }
+
+ Catch(fault)
+ {
+ store_write_reset(fault);
+ }
+#else
+ UNUSED(ps)
+#endif
+}
+
+/* Because we want to use the same code in both the progressive reader and the
+ * sequential reader it is necessary to deal with the fact that the progressive
+ * reader callbacks only have one parameter (png_get_progressive_ptr()), so this
+ * must contain all the test parameters and all the local variables directly
+ * accessible to the sequential reader implementation.
+ *
+ * The technique adopted is to reinvent part of what Dijkstra termed a
+ * 'display'; an array of pointers to the stack frames of enclosing functions so
+ * that a nested function definition can access the local (C auto) variables of
+ * the functions that contain its definition. In fact C provides the first
+ * pointer (the local variables - the stack frame pointer) and the last (the
+ * global variables - the BCPL global vector typically implemented as global
+ * addresses), this code requires one more pointer to make the display - the
+ * local variables (and function call parameters) of the function that actually
+ * invokes either the progressive or sequential reader.
+ *
+ * Perhaps confusingly this technique is confounded with classes - the
+ * 'standard_display' defined here is sub-classed as the 'gamma_display' below.
+ * A gamma_display is a standard_display, taking advantage of the ANSI-C
+ * requirement that the pointer to the first member of a structure must be the
+ * same as the pointer to the structure. This allows us to reuse standard_
+ * functions in the gamma test code; something that could not be done with
+ * nested functions!
+ */
+typedef struct standard_display
+{
+ png_store* ps; /* Test parameters (passed to the function) */
+ png_byte colour_type;
+ png_byte bit_depth;
+ png_byte red_sBIT; /* Input data sBIT values. */
+ png_byte green_sBIT;
+ png_byte blue_sBIT;
+ png_byte alpha_sBIT;
+ int interlace_type;
+ png_uint_32 id; /* Calculated file ID */
+ png_uint_32 w; /* Width of image */
+ png_uint_32 h; /* Height of image */
+ int npasses; /* Number of interlaced passes */
+ png_uint_32 pixel_size; /* Width of one pixel in bits */
+ png_uint_32 bit_width; /* Width of output row in bits */
+ size_t cbRow; /* Bytes in a row of the output image */
+ int do_interlace; /* Do interlacing internally */
+ int is_transparent; /* Transparency information was present. */
+ int speed; /* Doing a speed test */
+ int use_update_info;/* Call update_info, not start_image */
+ struct
+ {
+ png_uint_16 red;
+ png_uint_16 green;
+ png_uint_16 blue;
+ } transparent; /* The transparent color, if set. */
+ int npalette; /* Number of entries in the palette. */
+ store_palette
+ palette;
+} standard_display;
+
+static void
+standard_display_init(standard_display *dp, png_store* ps, png_uint_32 id,
+ int do_interlace, int use_update_info)
+{
+ memset(dp, 0, sizeof *dp);
+
+ dp->ps = ps;
+ dp->colour_type = COL_FROM_ID(id);
+ dp->bit_depth = DEPTH_FROM_ID(id);
+ if (dp->bit_depth < 1 || dp->bit_depth > 16)
+ internal_error(ps, "internal: bad bit depth");
+ if (dp->colour_type == 3)
+ dp->red_sBIT = dp->blue_sBIT = dp->green_sBIT = dp->alpha_sBIT = 8;
+ else
+ dp->red_sBIT = dp->blue_sBIT = dp->green_sBIT = dp->alpha_sBIT =
+ dp->bit_depth;
+ dp->interlace_type = INTERLACE_FROM_ID(id);
+ dp->id = id;
+ /* All the rest are filled in after the read_info: */
+ dp->w = 0;
+ dp->h = 0;
+ dp->npasses = 0;
+ dp->pixel_size = 0;
+ dp->bit_width = 0;
+ dp->cbRow = 0;
+ dp->do_interlace = do_interlace;
+ dp->is_transparent = 0;
+ dp->speed = ps->speed;
+ dp->use_update_info = use_update_info;
+ dp->npalette = 0;
+ /* Preset the transparent color to black: */
+ memset(&dp->transparent, 0, sizeof dp->transparent);
+ /* Preset the palette to full intensity/opaque througout: */
+ memset(dp->palette, 0xff, sizeof dp->palette);
+}
+
+/* Initialize the palette fields - this must be done later because the palette
+ * comes from the particular png_store_file that is selected.
+ */
+static void
+standard_palette_init(standard_display *dp)
+{
+ store_palette_entry *palette = store_current_palette(dp->ps, &dp->npalette);
+
+ /* The remaining entries remain white/opaque. */
+ if (dp->npalette > 0)
+ {
+ int i = dp->npalette;
+ memcpy(dp->palette, palette, i * sizeof *palette);
+
+ /* Check for a non-opaque palette entry: */
+ while (--i >= 0)
+ if (palette[i].alpha < 255)
+ break;
+
+# ifdef __GNUC__
+ /* GCC can't handle the more obviously optimizable version. */
+ if (i >= 0)
+ dp->is_transparent = 1;
+ else
+ dp->is_transparent = 0;
+# else
+ dp->is_transparent = (i >= 0);
+# endif
+ }
+}
+
+/* Utility to read the palette from the PNG file and convert it into
+ * store_palette format. This returns 1 if there is any transparency in the
+ * palette (it does not check for a transparent colour in the non-palette case.)
+ */
+static int
+read_palette(store_palette palette, int *npalette, png_structp pp, png_infop pi)
+{
+ png_colorp pal;
+ png_bytep trans_alpha;
+ int num;
+
+ pal = 0;
+ *npalette = -1;
+
+ if (png_get_PLTE(pp, pi, &pal, npalette) & PNG_INFO_PLTE)
+ {
+ int i = *npalette;
+
+ if (i <= 0 || i > 256)
+ png_error(pp, "validate: invalid PLTE count");
+
+ while (--i >= 0)
+ {
+ palette[i].red = pal[i].red;
+ palette[i].green = pal[i].green;
+ palette[i].blue = pal[i].blue;
+ }
+
+ /* Mark the remainder of the entries with a flag value (other than
+ * white/opaque which is the flag value stored above.)
+ */
+ memset(palette + *npalette, 126, (256-*npalette) * sizeof *palette);
+ }
+
+ else /* !png_get_PLTE */
+ {
+ if (*npalette != (-1))
+ png_error(pp, "validate: invalid PLTE result");
+ /* But there is no palette, so record this: */
+ *npalette = 0;
+ memset(palette, 113, sizeof (store_palette));
+ }
+
+ trans_alpha = 0;
+ num = 2; /* force error below */
+ if ((png_get_tRNS(pp, pi, &trans_alpha, &num, 0) & PNG_INFO_tRNS) != 0 &&
+ (trans_alpha != NULL || num != 1/*returns 1 for a transparent color*/) &&
+ /* Oops, if a palette tRNS gets expanded png_read_update_info (at least so
+ * far as 1.5.4) does not remove the trans_alpha pointer, only num_trans,
+ * so in the above call we get a success, we get a pointer (who knows what
+ * to) and we get num_trans == 0:
+ */
+ !(trans_alpha != NULL && num == 0)) /* TODO: fix this in libpng. */
+ {
+ int i;
+
+ /* Any of these are crash-worthy - given the implementation of
+ * png_get_tRNS up to 1.5 an app won't crash if it just checks the
+ * result above and fails to check that the variables it passed have
+ * actually been filled in! Note that if the app were to pass the
+ * last, png_color_16p, variable too it couldn't rely on this.
+ */
+ if (trans_alpha == NULL || num <= 0 || num > 256 || num > *npalette)
+ png_error(pp, "validate: unexpected png_get_tRNS (palette) result");
+
+ for (i=0; i<num; ++i)
+ palette[i].alpha = trans_alpha[i];
+
+ for (num=*npalette; i<num; ++i)
+ palette[i].alpha = 255;
+
+ for (; i<256; ++i)
+ palette[i].alpha = 33; /* flag value */
+
+ return 1; /* transparency */
+ }
+
+ else
+ {
+ /* No palette transparency - just set the alpha channel to opaque. */
+ int i;
+
+ for (i=0, num=*npalette; i<num; ++i)
+ palette[i].alpha = 255;
+
+ for (; i<256; ++i)
+ palette[i].alpha = 55; /* flag value */
+
+ return 0; /* no transparency */
+ }
+}
+
+/* Utility to validate the palette if it should not have changed (the
+ * non-transform case).
+ */
+static void
+standard_palette_validate(standard_display *dp, png_structp pp, png_infop pi)
+{
+ int npalette;
+ store_palette palette;
+
+ if (read_palette(palette, &npalette, pp, pi) != dp->is_transparent)
+ png_error(pp, "validate: palette transparency changed");
+
+ if (npalette != dp->npalette)
+ {
+ size_t pos = 0;
+ char msg[64];
+
+ pos = safecat(msg, sizeof msg, pos, "validate: palette size changed: ");
+ pos = safecatn(msg, sizeof msg, pos, dp->npalette);
+ pos = safecat(msg, sizeof msg, pos, " -> ");
+ pos = safecatn(msg, sizeof msg, pos, npalette);
+ png_error(pp, msg);
+ }
+
+ {
+ int i = npalette; /* npalette is aliased */
+
+ while (--i >= 0)
+ if (palette[i].red != dp->palette[i].red ||
+ palette[i].green != dp->palette[i].green ||
+ palette[i].blue != dp->palette[i].blue ||
+ palette[i].alpha != dp->palette[i].alpha)
+ png_error(pp, "validate: PLTE or tRNS chunk changed");
+ }
+}
+
+/* By passing a 'standard_display' the progressive callbacks can be used
+ * directly by the sequential code, the functions suffixed "_imp" are the
+ * implementations, the functions without the suffix are the callbacks.
+ *
+ * The code for the info callback is split into two because this callback calls
+ * png_read_update_info or png_start_read_image and what gets called depends on
+ * whether the info needs updating (we want to test both calls in pngvalid.)
+ */
+static void
+standard_info_part1(standard_display *dp, png_structp pp, png_infop pi)
+{
+ if (png_get_bit_depth(pp, pi) != dp->bit_depth)
+ png_error(pp, "validate: bit depth changed");
+
+ if (png_get_color_type(pp, pi) != dp->colour_type)
+ png_error(pp, "validate: color type changed");
+
+ if (png_get_filter_type(pp, pi) != PNG_FILTER_TYPE_BASE)
+ png_error(pp, "validate: filter type changed");
+
+ if (png_get_interlace_type(pp, pi) != dp->interlace_type)
+ png_error(pp, "validate: interlacing changed");
+
+ if (png_get_compression_type(pp, pi) != PNG_COMPRESSION_TYPE_BASE)
+ png_error(pp, "validate: compression type changed");
+
+ dp->w = png_get_image_width(pp, pi);
+
+ if (dp->w != standard_width(pp, dp->id))
+ png_error(pp, "validate: image width changed");
+
+ dp->h = png_get_image_height(pp, pi);
+
+ if (dp->h != standard_height(pp, dp->id))
+ png_error(pp, "validate: image height changed");
+
+ /* Record (but don't check at present) the input sBIT according to the colour
+ * type information.
+ */
+ {
+ png_color_8p sBIT = 0;
+
+ if (png_get_sBIT(pp, pi, &sBIT) & PNG_INFO_sBIT)
+ {
+ int sBIT_invalid = 0;
+
+ if (sBIT == 0)
+ png_error(pp, "validate: unexpected png_get_sBIT result");
+
+ if (dp->colour_type & PNG_COLOR_MASK_COLOR)
+ {
+ if (sBIT->red == 0 || sBIT->red > dp->bit_depth)
+ sBIT_invalid = 1;
+ else
+ dp->red_sBIT = sBIT->red;
+
+ if (sBIT->green == 0 || sBIT->green > dp->bit_depth)
+ sBIT_invalid = 1;
+ else
+ dp->green_sBIT = sBIT->green;
+
+ if (sBIT->blue == 0 || sBIT->blue > dp->bit_depth)
+ sBIT_invalid = 1;
+ else
+ dp->blue_sBIT = sBIT->blue;
+ }
+
+ else /* !COLOR */
+ {
+ if (sBIT->gray == 0 || sBIT->gray > dp->bit_depth)
+ sBIT_invalid = 1;
+ else
+ dp->blue_sBIT = dp->green_sBIT = dp->red_sBIT = sBIT->gray;
+ }
+
+ /* All 8 bits in tRNS for a palette image are significant - see the
+ * spec.
+ */
+ if (dp->colour_type & PNG_COLOR_MASK_ALPHA)
+ {
+ if (sBIT->alpha == 0 || sBIT->alpha > dp->bit_depth)
+ sBIT_invalid = 1;
+ else
+ dp->alpha_sBIT = sBIT->alpha;
+ }
+
+ if (sBIT_invalid)
+ png_error(pp, "validate: sBIT value out of range");
+ }
+ }
+
+ /* Important: this is validating the value *before* any transforms have been
+ * put in place. It doesn't matter for the standard tests, where there are
+ * no transforms, but it does for other tests where rowbytes may change after
+ * png_read_update_info.
+ */
+ if (png_get_rowbytes(pp, pi) != standard_rowsize(pp, dp->id))
+ png_error(pp, "validate: row size changed");
+
+ /* Validate the colour type 3 palette (this can be present on other color
+ * types.)
+ */
+ standard_palette_validate(dp, pp, pi);
+
+ /* In any case always check for a tranparent color (notice that the
+ * colour type 3 case must not give a successful return on the get_tRNS call
+ * with these arguments!)
+ */
+ {
+ png_color_16p trans_color = 0;
+
+ if (png_get_tRNS(pp, pi, 0, 0, &trans_color) & PNG_INFO_tRNS)
+ {
+ if (trans_color == 0)
+ png_error(pp, "validate: unexpected png_get_tRNS (color) result");
+
+ switch (dp->colour_type)
+ {
+ case 0:
+ dp->transparent.red = dp->transparent.green = dp->transparent.blue =
+ trans_color->gray;
+ dp->is_transparent = 1;
+ break;
+
+ case 2:
+ dp->transparent.red = trans_color->red;
+ dp->transparent.green = trans_color->green;
+ dp->transparent.blue = trans_color->blue;
+ dp->is_transparent = 1;
+ break;
+
+ case 3:
+ /* Not expected because it should result in the array case
+ * above.
+ */
+ png_error(pp, "validate: unexpected png_get_tRNS result");
+ break;
+
+ default:
+ png_error(pp, "validate: invalid tRNS chunk with alpha image");
+ }
+ }
+ }
+
+ /* Read the number of passes - expected to match the value used when
+ * creating the image (interlaced or not). This has the side effect of
+ * turning on interlace handling (if do_interlace is not set.)
+ */
+ dp->npasses = npasses_from_interlace_type(pp, dp->interlace_type);
+ if (!dp->do_interlace && dp->npasses != png_set_interlace_handling(pp))
+ png_error(pp, "validate: file changed interlace type");
+
+ /* Caller calls png_read_update_info or png_start_read_image now, then calls
+ * part2.
+ */
+}
+
+/* This must be called *after* the png_read_update_info call to get the correct
+ * 'rowbytes' value, otherwise png_get_rowbytes will refer to the untransformed
+ * image.
+ */
+static void
+standard_info_part2(standard_display *dp, png_structp pp, png_infop pi,
+ int nImages)
+{
+ /* Record cbRow now that it can be found. */
+ dp->pixel_size = bit_size(pp, png_get_color_type(pp, pi),
+ png_get_bit_depth(pp, pi));
+ dp->bit_width = png_get_image_width(pp, pi) * dp->pixel_size;
+ dp->cbRow = png_get_rowbytes(pp, pi);
+
+ /* Validate the rowbytes here again. */
+ if (dp->cbRow != (dp->bit_width+7)/8)
+ png_error(pp, "bad png_get_rowbytes calculation");
+
+ /* Then ensure there is enough space for the output image(s). */
+ store_ensure_image(dp->ps, pp, nImages, dp->cbRow, dp->h);
+}
+
+static void
+standard_info_imp(standard_display *dp, png_structp pp, png_infop pi,
+ int nImages)
+{
+ /* Note that the validation routine has the side effect of turning on
+ * interlace handling in the subsequent code.
+ */
+ standard_info_part1(dp, pp, pi);
+
+ /* And the info callback has to call this (or png_read_update_info - see
+ * below in the png_modifier code for that variant.
+ */
+ if (dp->use_update_info)
+ {
+ /* For debugging the effect of multiple calls: */
+ int i = dp->use_update_info;
+ while (i-- > 0)
+ png_read_update_info(pp, pi);
+ }
+
+ else
+ png_start_read_image(pp);
+
+ /* Validate the height, width and rowbytes plus ensure that sufficient buffer
+ * exists for decoding the image.
+ */
+ standard_info_part2(dp, pp, pi, nImages);
+}
+
+static void
+standard_info(png_structp pp, png_infop pi)
+{
+ standard_display *dp = voidcast(standard_display*,
+ png_get_progressive_ptr(pp));
+
+ /* Call with nImages==1 because the progressive reader can only produce one
+ * image.
+ */
+ standard_info_imp(dp, pp, pi, 1 /*only one image*/);
+}
+
+static void
+progressive_row(png_structp pp, png_bytep new_row, png_uint_32 y, int pass)
+{
+ PNG_CONST standard_display *dp = voidcast(standard_display*,
+ png_get_progressive_ptr(pp));
+
+ /* When handling interlacing some rows will be absent in each pass, the
+ * callback still gets called, but with a NULL pointer. This is checked
+ * in the 'else' clause below. We need our own 'cbRow', but we can't call
+ * png_get_rowbytes because we got no info structure.
+ */
+ if (new_row != NULL)
+ {
+ png_bytep row;
+
+ /* In the case where the reader doesn't do the interlace it gives
+ * us the y in the sub-image:
+ */
+ if (dp->do_interlace && dp->interlace_type == PNG_INTERLACE_ADAM7)
+ {
+#ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED
+ /* Use this opportunity to validate the png 'current' APIs: */
+ if (y != png_get_current_row_number(pp))
+ png_error(pp, "png_get_current_row_number is broken");
+
+ if (pass != png_get_current_pass_number(pp))
+ png_error(pp, "png_get_current_pass_number is broken");
+#endif
+
+ y = PNG_ROW_FROM_PASS_ROW(y, pass);
+ }
+
+ /* Validate this just in case. */
+ if (y >= dp->h)
+ png_error(pp, "invalid y to progressive row callback");
+
+ row = store_image_row(dp->ps, pp, 0, y);
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* Combine the new row into the old: */
+ if (dp->do_interlace)
+ {
+ if (dp->interlace_type == PNG_INTERLACE_ADAM7)
+ deinterlace_row(row, new_row, dp->pixel_size, dp->w, pass);
+ else
+ row_copy(row, new_row, dp->pixel_size * dp->w);
+ }
+ else
+ png_progressive_combine_row(pp, row, new_row);
+ } else if (dp->interlace_type == PNG_INTERLACE_ADAM7 &&
+ PNG_ROW_IN_INTERLACE_PASS(y, pass) &&
+ PNG_PASS_COLS(dp->w, pass) > 0)
+ png_error(pp, "missing row in progressive de-interlacing");
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+}
+
+static void
+sequential_row(standard_display *dp, png_structp pp, png_infop pi,
+ PNG_CONST int iImage, PNG_CONST int iDisplay)
+{
+ PNG_CONST int npasses = dp->npasses;
+ PNG_CONST int do_interlace = dp->do_interlace &&
+ dp->interlace_type == PNG_INTERLACE_ADAM7;
+ PNG_CONST png_uint_32 height = standard_height(pp, dp->id);
+ PNG_CONST png_uint_32 width = standard_width(pp, dp->id);
+ PNG_CONST png_store* ps = dp->ps;
+ int pass;
+
+ for (pass=0; pass<npasses; ++pass)
+ {
+ png_uint_32 y;
+ png_uint_32 wPass = PNG_PASS_COLS(width, pass);
+
+ for (y=0; y<height; ++y)
+ {
+ if (do_interlace)
+ {
+ /* wPass may be zero or this row may not be in this pass.
+ * png_read_row must not be called in either case.
+ */
+ if (wPass > 0 && PNG_ROW_IN_INTERLACE_PASS(y, pass))
+ {
+ /* Read the row into a pair of temporary buffers, then do the
+ * merge here into the output rows.
+ */
+ png_byte row[STANDARD_ROWMAX], display[STANDARD_ROWMAX];
+
+ /* The following aids (to some extent) error detection - we can
+ * see where png_read_row wrote. Use opposite values in row and
+ * display to make this easier. Don't use 0xff (which is used in
+ * the image write code to fill unused bits) or 0 (which is a
+ * likely value to overwrite unused bits with).
+ */
+ memset(row, 0xc5, sizeof row);
+ memset(display, 0x5c, sizeof display);
+
+ png_read_row(pp, row, display);
+
+ if (iImage >= 0)
+ deinterlace_row(store_image_row(ps, pp, iImage, y), row,
+ dp->pixel_size, dp->w, pass);
+
+ if (iDisplay >= 0)
+ deinterlace_row(store_image_row(ps, pp, iDisplay, y), display,
+ dp->pixel_size, dp->w, pass);
+ }
+ }
+ else
+ png_read_row(pp,
+ iImage >= 0 ? store_image_row(ps, pp, iImage, y) : NULL,
+ iDisplay >= 0 ? store_image_row(ps, pp, iDisplay, y) : NULL);
+ }
+ }
+
+ /* And finish the read operation (only really necessary if the caller wants
+ * to find additional data in png_info from chunks after the last IDAT.)
+ */
+ png_read_end(pp, pi);
+}
+
+static void
+standard_row_validate(standard_display *dp, png_structp pp,
+ int iImage, int iDisplay, png_uint_32 y)
+{
+ int where;
+ png_byte std[STANDARD_ROWMAX];
+
+ /* The row must be pre-initialized to the magic number here for the size
+ * tests to pass:
+ */
+ memset(std, 178, sizeof std);
+ standard_row(pp, std, dp->id, y);
+
+ /* At the end both the 'row' and 'display' arrays should end up identical.
+ * In earlier passes 'row' will be partially filled in, with only the pixels
+ * that have been read so far, but 'display' will have those pixels
+ * replicated to fill the unread pixels while reading an interlaced image.
+#if PNG_LIBPNG_VER < 10506
+ * The side effect inside the libpng sequential reader is that the 'row'
+ * array retains the correct values for unwritten pixels within the row
+ * bytes, while the 'display' array gets bits off the end of the image (in
+ * the last byte) trashed. Unfortunately in the progressive reader the
+ * row bytes are always trashed, so we always do a pixel_cmp here even though
+ * a memcmp of all cbRow bytes will succeed for the sequential reader.
+#endif
+ */
+ if (iImage >= 0 &&
+ (where = pixel_cmp(std, store_image_row(dp->ps, pp, iImage, y),
+ dp->bit_width)) != 0)
+ {
+ char msg[64];
+ sprintf(msg, "PNG image row[%d][%d] changed from %.2x to %.2x", y,
+ where-1, std[where-1],
+ store_image_row(dp->ps, pp, iImage, y)[where-1]);
+ png_error(pp, msg);
+ }
+
+#if PNG_LIBPNG_VER < 10506
+ /* In this case use pixel_cmp because we need to compare a partial
+ * byte at the end of the row if the row is not an exact multiple
+ * of 8 bits wide. (This is fixed in libpng-1.5.6 and pixel_cmp is
+ * changed to match!)
+ */
+#endif
+ if (iDisplay >= 0 &&
+ (where = pixel_cmp(std, store_image_row(dp->ps, pp, iDisplay, y),
+ dp->bit_width)) != 0)
+ {
+ char msg[64];
+ sprintf(msg, "display row[%d][%d] changed from %.2x to %.2x", y,
+ where-1, std[where-1],
+ store_image_row(dp->ps, pp, iDisplay, y)[where-1]);
+ png_error(pp, msg);
+ }
+}
+
+static void
+standard_image_validate(standard_display *dp, png_structp pp, int iImage,
+ int iDisplay)
+{
+ png_uint_32 y;
+
+ if (iImage >= 0)
+ store_image_check(dp->ps, pp, iImage);
+
+ if (iDisplay >= 0)
+ store_image_check(dp->ps, pp, iDisplay);
+
+ for (y=0; y<dp->h; ++y)
+ standard_row_validate(dp, pp, iImage, iDisplay, y);
+
+ /* This avoids false positives if the validation code is never called! */
+ dp->ps->validated = 1;
+}
+
+static void
+standard_end(png_structp pp, png_infop pi)
+{
+ standard_display *dp = voidcast(standard_display*,
+ png_get_progressive_ptr(pp));
+
+ UNUSED(pi)
+
+ /* Validate the image - progressive reading only produces one variant for
+ * interlaced images.
+ */
+ standard_image_validate(dp, pp, 0, -1);
+}
+
+/* A single test run checking the standard image to ensure it is not damaged. */
+static void
+standard_test(png_store* PNG_CONST psIn, png_uint_32 PNG_CONST id,
+ int do_interlace, int use_update_info)
+{
+ standard_display d;
+ context(psIn, fault);
+
+ /* Set up the display (stack frame) variables from the arguments to the
+ * function and initialize the locals that are filled in later.
+ */
+ standard_display_init(&d, psIn, id, do_interlace, use_update_info);
+
+ /* Everything is protected by a Try/Catch. The functions called also
+ * typically have local Try/Catch blocks.
+ */
+ Try
+ {
+ png_structp pp;
+ png_infop pi;
+
+ /* Get a png_struct for reading the image. This will throw an error if it
+ * fails, so we don't need to check the result.
+ */
+ pp = set_store_for_read(d.ps, &pi, d.id,
+ d.do_interlace ? (d.ps->progressive ?
+ "pngvalid progressive deinterlacer" :
+ "pngvalid sequential deinterlacer") : (d.ps->progressive ?
+ "progressive reader" : "sequential reader"));
+
+ /* Initialize the palette correctly from the png_store_file. */
+ standard_palette_init(&d);
+
+ /* Introduce the correct read function. */
+ if (d.ps->progressive)
+ {
+ png_set_progressive_read_fn(pp, &d, standard_info, progressive_row,
+ standard_end);
+
+ /* Now feed data into the reader until we reach the end: */
+ store_progressive_read(d.ps, pp, pi);
+ }
+ else
+ {
+ /* Note that this takes the store, not the display. */
+ png_set_read_fn(pp, d.ps, store_read);
+
+ /* Check the header values: */
+ png_read_info(pp, pi);
+
+ /* The code tests both versions of the images that the sequential
+ * reader can produce.
+ */
+ standard_info_imp(&d, pp, pi, 2 /*images*/);
+
+ /* Need the total bytes in the image below; we can't get to this point
+ * unless the PNG file values have been checked against the expected
+ * values.
+ */
+ {
+ sequential_row(&d, pp, pi, 0, 1);
+
+ /* After the last pass loop over the rows again to check that the
+ * image is correct.
+ */
+ if (!d.speed)
+ standard_image_validate(&d, pp, 0, 1);
+ else
+ d.ps->validated = 1;
+ }
+ }
+
+ /* Check for validation. */
+ if (!d.ps->validated)
+ png_error(pp, "image read failed silently");
+
+ /* Successful completion. */
+ }
+
+ Catch(fault)
+ d.ps = fault; /* make sure this hasn't been clobbered. */
+
+ /* In either case clean up the store. */
+ store_read_reset(d.ps);
+}
+
+static int
+test_standard(png_modifier* PNG_CONST pm, png_byte PNG_CONST colour_type,
+ int bdlo, int PNG_CONST bdhi)
+{
+ for (; bdlo <= bdhi; ++bdlo)
+ {
+ int interlace_type;
+
+ for (interlace_type = PNG_INTERLACE_NONE;
+ interlace_type < PNG_INTERLACE_LAST; ++interlace_type)
+ {
+ standard_test(&pm->this, FILEID(colour_type, DEPTH(bdlo), 0/*palette*/,
+ interlace_type, 0, 0, 0), 0/*do_interlace*/, pm->use_update_info);
+
+ if (fail(pm))
+ return 0;
+ }
+ }
+
+ return 1; /* keep going */
+}
+
+static void
+perform_standard_test(png_modifier *pm)
+{
+ /* Test each colour type over the valid range of bit depths (expressed as
+ * log2(bit_depth) in turn, stop as soon as any error is detected.
+ */
+ if (!test_standard(pm, 0, 0, READ_BDHI))
+ return;
+
+ if (!test_standard(pm, 2, 3, READ_BDHI))
+ return;
+
+ if (!test_standard(pm, 3, 0, 3))
+ return;
+
+ if (!test_standard(pm, 4, 3, READ_BDHI))
+ return;
+
+ if (!test_standard(pm, 6, 3, READ_BDHI))
+ return;
+}
+
+
+/********************************** SIZE TESTS ********************************/
+static int
+test_size(png_modifier* PNG_CONST pm, png_byte PNG_CONST colour_type,
+ int bdlo, int PNG_CONST bdhi)
+{
+ /* Run the tests on each combination.
+ *
+ * NOTE: on my 32 bit x86 each of the following blocks takes
+ * a total of 3.5 seconds if done across every combo of bit depth
+ * width and height. This is a waste of time in practice, hence the
+ * hinc and winc stuff:
+ */
+ static PNG_CONST png_byte hinc[] = {1, 3, 11, 1, 5};
+ static PNG_CONST png_byte winc[] = {1, 9, 5, 7, 1};
+ for (; bdlo <= bdhi; ++bdlo)
+ {
+ png_uint_32 h, w;
+
+ for (h=1; h<=16; h+=hinc[bdlo]) for (w=1; w<=16; w+=winc[bdlo])
+ {
+ /* First test all the 'size' images against the sequential
+ * reader using libpng to deinterlace (where required.) This
+ * validates the write side of libpng. There are four possibilities
+ * to validate.
+ */
+ standard_test(&pm->this, FILEID(colour_type, DEPTH(bdlo), 0/*palette*/,
+ PNG_INTERLACE_NONE, w, h, 0), 0/*do_interlace*/,
+ pm->use_update_info);
+
+ if (fail(pm))
+ return 0;
+
+ standard_test(&pm->this, FILEID(colour_type, DEPTH(bdlo), 0/*palette*/,
+ PNG_INTERLACE_NONE, w, h, 1), 0/*do_interlace*/,
+ pm->use_update_info);
+
+ if (fail(pm))
+ return 0;
+
+ standard_test(&pm->this, FILEID(colour_type, DEPTH(bdlo), 0/*palette*/,
+ PNG_INTERLACE_ADAM7, w, h, 0), 0/*do_interlace*/,
+ pm->use_update_info);
+
+ if (fail(pm))
+ return 0;
+
+ standard_test(&pm->this, FILEID(colour_type, DEPTH(bdlo), 0/*palette*/,
+ PNG_INTERLACE_ADAM7, w, h, 1), 0/*do_interlace*/,
+ pm->use_update_info);
+
+ if (fail(pm))
+ return 0;
+
+ /* Now validate the interlaced read side - do_interlace true,
+ * in the progressive case this does actually make a difference
+ * to the code used in the non-interlaced case too.
+ */
+ standard_test(&pm->this, FILEID(colour_type, DEPTH(bdlo), 0/*palette*/,
+ PNG_INTERLACE_NONE, w, h, 0), 1/*do_interlace*/,
+ pm->use_update_info);
+
+ if (fail(pm))
+ return 0;
+
+ standard_test(&pm->this, FILEID(colour_type, DEPTH(bdlo), 0/*palette*/,
+ PNG_INTERLACE_ADAM7, w, h, 0), 1/*do_interlace*/,
+ pm->use_update_info);
+
+ if (fail(pm))
+ return 0;
+ }
+ }
+
+ return 1; /* keep going */
+}
+
+static void
+perform_size_test(png_modifier *pm)
+{
+ /* Test each colour type over the valid range of bit depths (expressed as
+ * log2(bit_depth) in turn, stop as soon as any error is detected.
+ */
+ if (!test_size(pm, 0, 0, READ_BDHI))
+ return;
+
+ if (!test_size(pm, 2, 3, READ_BDHI))
+ return;
+
+ /* For the moment don't do the palette test - it's a waste of time when
+ * compared to the grayscale test.
+ */
+#if 0
+ if (!test_size(pm, 3, 0, 3))
+ return;
+#endif
+
+ if (!test_size(pm, 4, 3, READ_BDHI))
+ return;
+
+ if (!test_size(pm, 6, 3, READ_BDHI))
+ return;
+}
+
+
+/******************************* TRANSFORM TESTS ******************************/
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+/* A set of tests to validate libpng image transforms. The possibilities here
+ * are legion because the transforms can be combined in a combinatorial
+ * fashion. To deal with this some measure of restraint is required, otherwise
+ * the tests would take forever.
+ */
+typedef struct image_pixel
+{
+ /* A local (pngvalid) representation of a PNG pixel, in all its
+ * various forms.
+ */
+ unsigned int red, green, blue, alpha; /* For non-palette images. */
+ unsigned int palette_index; /* For a palette image. */
+ png_byte colour_type; /* As in the spec. */
+ png_byte bit_depth; /* Defines bit size in row */
+ png_byte sample_depth; /* Scale of samples */
+ int have_tRNS; /* tRNS chunk may need processing */
+
+ /* For checking the code calculates double precision floating point values
+ * along with an error value, accumulated from the transforms. Because an
+ * sBIT setting allows larger error bounds (indeed, by the spec, apparently
+ * up to just less than +/-1 in the scaled value) the *lowest* sBIT for each
+ * channel is stored. This sBIT value is folded in to the stored error value
+ * at the end of the application of the transforms to the pixel.
+ */
+ double redf, greenf, bluef, alphaf;
+ double rede, greene, bluee, alphae;
+ png_byte red_sBIT, green_sBIT, blue_sBIT, alpha_sBIT;
+} image_pixel;
+
+/* Shared utility function, see below. */
+static void
+image_pixel_setf(image_pixel *this, unsigned int max)
+{
+ this->redf = this->red / (double)max;
+ this->greenf = this->green / (double)max;
+ this->bluef = this->blue / (double)max;
+ this->alphaf = this->alpha / (double)max;
+
+ if (this->red < max)
+ this->rede = this->redf * DBL_EPSILON;
+ else
+ this->rede = 0;
+ if (this->green < max)
+ this->greene = this->greenf * DBL_EPSILON;
+ else
+ this->greene = 0;
+ if (this->blue < max)
+ this->bluee = this->bluef * DBL_EPSILON;
+ else
+ this->bluee = 0;
+ if (this->alpha < max)
+ this->alphae = this->alphaf * DBL_EPSILON;
+ else
+ this->alphae = 0;
+}
+
+/* Initialize the structure for the next pixel - call this before doing any
+ * transforms and call it for each pixel since all the fields may need to be
+ * reset.
+ */
+static void
+image_pixel_init(image_pixel *this, png_const_bytep row, png_byte colour_type,
+ png_byte bit_depth, png_uint_32 x, store_palette palette)
+{
+ PNG_CONST png_byte sample_depth = (png_byte)(colour_type ==
+ PNG_COLOR_TYPE_PALETTE ? 8 : bit_depth);
+ PNG_CONST unsigned int max = (1U<<sample_depth)-1;
+
+ /* Initially just set everything to the same number and the alpha to opaque.
+ * Note that this currently assumes a simple palette where entry x has colour
+ * rgb(x,x,x)!
+ */
+ this->palette_index = this->red = this->green = this->blue =
+ sample(row, colour_type, bit_depth, x, 0);
+ this->alpha = max;
+ this->red_sBIT = this->green_sBIT = this->blue_sBIT = this->alpha_sBIT =
+ sample_depth;
+
+ /* Then override as appropriate: */
+ if (colour_type == 3) /* palette */
+ {
+ /* This permits the caller to default to the sample value. */
+ if (palette != 0)
+ {
+ PNG_CONST unsigned int i = this->palette_index;
+
+ this->red = palette[i].red;
+ this->green = palette[i].green;
+ this->blue = palette[i].blue;
+ this->alpha = palette[i].alpha;
+ }
+ }
+
+ else /* not palette */
+ {
+ unsigned int i = 0;
+
+ if (colour_type & 2)
+ {
+ this->green = sample(row, colour_type, bit_depth, x, 1);
+ this->blue = sample(row, colour_type, bit_depth, x, 2);
+ i = 2;
+ }
+ if (colour_type & 4)
+ this->alpha = sample(row, colour_type, bit_depth, x, ++i);
+ }
+
+ /* Calculate the scaled values, these are simply the values divided by
+ * 'max' and the error is initialized to the double precision epsilon value
+ * from the header file.
+ */
+ image_pixel_setf(this, max);
+
+ /* Store the input information for use in the transforms - these will
+ * modify the information.
+ */
+ this->colour_type = colour_type;
+ this->bit_depth = bit_depth;
+ this->sample_depth = sample_depth;
+ this->have_tRNS = 0;
+}
+
+/* Convert a palette image to an rgb image. This necessarily converts the tRNS
+ * chunk at the same time, because the tRNS will be in palette form. The way
+ * palette validation works means that the original palette is never updated,
+ * instead the image_pixel value from the row contains the RGB of the
+ * corresponding palette entry and *this* is updated. Consequently this routine
+ * only needs to change the colour type information.
+ */
+static void
+image_pixel_convert_PLTE(image_pixel *this)
+{
+ if (this->colour_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (this->have_tRNS)
+ {
+ this->colour_type = PNG_COLOR_TYPE_RGB_ALPHA;
+ this->have_tRNS = 0;
+ }
+ else
+ this->colour_type = PNG_COLOR_TYPE_RGB;
+
+ /* The bit depth of the row changes at this point too (notice that this is
+ * the row format, not the sample depth, which is separate.)
+ */
+ this->bit_depth = 8;
+ }
+}
+
+/* Add an alpha channel; this will import the tRNS information because tRNS is
+ * not valid in an alpha image. The bit depth will invariably be set to at
+ * least 8. Palette images will be converted to alpha (using the above API).
+ */
+static void
+image_pixel_add_alpha(image_pixel *this, PNG_CONST standard_display *display)
+{
+ if (this->colour_type == PNG_COLOR_TYPE_PALETTE)
+ image_pixel_convert_PLTE(this);
+
+ if ((this->colour_type & PNG_COLOR_MASK_ALPHA) == 0)
+ {
+ if (this->colour_type == PNG_COLOR_TYPE_GRAY)
+ {
+ if (this->bit_depth < 8)
+ this->bit_depth = 8;
+
+ if (this->have_tRNS)
+ {
+ this->have_tRNS = 0;
+
+ /* Check the input, original, channel value here against the
+ * original tRNS gray chunk valie.
+ */
+ if (this->red == display->transparent.red)
+ this->alphaf = 0;
+ else
+ this->alphaf = 1;
+ }
+ else
+ this->alphaf = 1;
+
+ this->colour_type = PNG_COLOR_TYPE_GRAY_ALPHA;
+ }
+
+ else if (this->colour_type == PNG_COLOR_TYPE_RGB)
+ {
+ if (this->have_tRNS)
+ {
+ this->have_tRNS = 0;
+
+ /* Again, check the exact input values, not the current transformed
+ * value!
+ */
+ if (this->red == display->transparent.red &&
+ this->green == display->transparent.green &&
+ this->blue == display->transparent.blue)
+ this->alphaf = 0;
+ else
+ this->alphaf = 1;
+
+ this->colour_type = PNG_COLOR_TYPE_RGB_ALPHA;
+ }
+ }
+
+ /* The error in the alpha is zero and the sBIT value comes from the
+ * original sBIT data (actually it will always be the original bit depth).
+ */
+ this->alphae = 0;
+ this->alpha_sBIT = display->alpha_sBIT;
+ }
+}
+
+struct transform_display;
+typedef struct image_transform
+{
+ /* The name of this transform: a string. */
+ PNG_CONST char *name;
+
+ /* Each transform can be disabled from the command line: */
+ int enable;
+
+ /* The global list of transforms; read only. */
+ struct image_transform *PNG_CONST list;
+
+ /* The global count of the number of times this transform has been set on an
+ * image.
+ */
+ unsigned int global_use;
+
+ /* The local count of the number of times this transform has been set. */
+ unsigned int local_use;
+
+ /* The next transform in the list, each transform must call its own next
+ * transform after it has processed the pixel successfully.
+ */
+ PNG_CONST struct image_transform *next;
+
+ /* A single transform for the image, expressed as a series of function
+ * callbacks and some space for values.
+ *
+ * First a callback to add any required modifications to the png_modifier;
+ * this gets called just before the modifier is set up for read.
+ */
+ void (*ini)(PNG_CONST struct image_transform *this,
+ struct transform_display *that);
+
+ /* And a callback to set the transform on the current png_read_struct:
+ */
+ void (*set)(PNG_CONST struct image_transform *this,
+ struct transform_display *that, png_structp pp, png_infop pi);
+
+ /* Then a transform that takes an input pixel in one PNG format or another
+ * and modifies it by a pngvalid implementation of the transform (thus
+ * duplicating the libpng intent without, we hope, duplicating the bugs
+ * in the libpng implementation!) The png_structp is solely to allow error
+ * reporting via png_error and png_warning.
+ */
+ void (*mod)(PNG_CONST struct image_transform *this, image_pixel *that,
+ png_structp pp, PNG_CONST struct transform_display *display);
+
+ /* Add this transform to the list and return true if the transform is
+ * meaningful for this colour type and bit depth - if false then the
+ * transform should have no effect on the image so there's not a lot of
+ * point running it.
+ */
+ int (*add)(struct image_transform *this,
+ PNG_CONST struct image_transform **that, png_byte colour_type,
+ png_byte bit_depth);
+} image_transform;
+
+typedef struct transform_display
+{
+ standard_display this;
+
+ /* Parameters */
+ png_modifier* pm;
+ PNG_CONST image_transform* transform_list;
+
+ /* Local variables */
+ png_byte output_colour_type;
+ png_byte output_bit_depth;
+
+ /* Modifications (not necessarily used.) */
+ gama_modification gama_mod;
+ chrm_modification chrm_mod;
+ srgb_modification srgb_mod;
+} transform_display;
+
+/* Set sRGB, cHRM and gAMA transforms as required by the current encoding. */
+static void
+transform_set_encoding(transform_display *this)
+{
+ /* Set up the png_modifier '_current' fields then use these to determine how
+ * to add appropriate chunks.
+ */
+ png_modifier *pm = this->pm;
+
+ modifier_set_encoding(pm);
+
+ if (modifier_color_encoding_is_set(pm))
+ {
+ if (modifier_color_encoding_is_sRGB(pm))
+ srgb_modification_init(&this->srgb_mod, pm, PNG_sRGB_INTENT_ABSOLUTE);
+
+ else
+ {
+ /* Set gAMA and cHRM separately. */
+ gama_modification_init(&this->gama_mod, pm, pm->current_gamma);
+
+ if (pm->current_encoding != 0)
+ chrm_modification_init(&this->chrm_mod, pm, pm->current_encoding);
+ }
+ }
+}
+
+/* Three functions to end the list: */
+static void
+image_transform_ini_end(PNG_CONST image_transform *this,
+ transform_display *that)
+{
+ UNUSED(this)
+ UNUSED(that)
+}
+
+static void
+image_transform_set_end(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ UNUSED(this)
+ UNUSED(that)
+ UNUSED(pp)
+ UNUSED(pi)
+}
+
+/* At the end of the list recalculate the output image pixel value from the
+ * double precision values set up by the preceding 'mod' calls:
+ */
+static unsigned int
+sample_scale(double sample_value, unsigned int scale)
+{
+ sample_value = floor(sample_value * scale + .5);
+
+ /* Return NaN as 0: */
+ if (!(sample_value > 0))
+ sample_value = 0;
+ else if (sample_value > scale)
+ sample_value = scale;
+
+ return (unsigned int)sample_value;
+}
+
+static void
+image_transform_mod_end(PNG_CONST image_transform *this, image_pixel *that,
+ png_structp pp, PNG_CONST transform_display *display)
+{
+ PNG_CONST unsigned int scale = (1U<<that->sample_depth)-1;
+
+ UNUSED(this)
+ UNUSED(pp)
+ UNUSED(display)
+
+ /* At the end recalculate the digitized red green and blue values according
+ * to the current sample_depth of the pixel.
+ *
+ * The sample value is simply scaled to the maximum, checking for over
+ * and underflow (which can both happen for some image transforms,
+ * including simple size scaling, though libpng doesn't do that at present.
+ */
+ that->red = sample_scale(that->redf, scale);
+
+ /* The error value is increased, at the end, according to the lowest sBIT
+ * value seen. Common sense tells us that the intermediate integer
+ * representations are no more accurate than +/- 0.5 in the integral values,
+ * the sBIT allows the implementation to be worse than this. In addition the
+ * PNG specification actually permits any error within the range (-1..+1),
+ * but that is ignored here. Instead the final digitized value is compared,
+ * below to the digitized value of the error limits - this has the net effect
+ * of allowing (almost) +/-1 in the output value. It's difficult to see how
+ * any algorithm that digitizes intermediate results can be more accurate.
+ */
+ that->rede += 1./(2*((1U<<that->red_sBIT)-1));
+
+ if (that->colour_type & PNG_COLOR_MASK_COLOR)
+ {
+ that->green = sample_scale(that->greenf, scale);
+ that->blue = sample_scale(that->bluef, scale);
+ that->greene += 1./(2*((1U<<that->green_sBIT)-1));
+ that->bluee += 1./(2*((1U<<that->blue_sBIT)-1));
+ }
+ else
+ {
+ that->blue = that->green = that->red;
+ that->bluef = that->greenf = that->redf;
+ that->bluee = that->greene = that->rede;
+ }
+
+ if ((that->colour_type & PNG_COLOR_MASK_ALPHA) ||
+ that->colour_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ that->alpha = sample_scale(that->alphaf, scale);
+ that->alphae += 1./(2*((1U<<that->alpha_sBIT)-1));
+ }
+ else
+ {
+ that->alpha = scale; /* opaque */
+ that->alpha = 1; /* Override this. */
+ that->alphae = 0; /* It's exact ;-) */
+ }
+}
+
+/* Static 'end' structure: */
+static image_transform image_transform_end =
+{
+ "(end)", /* name */
+ 1, /* enable */
+ 0, /* list */
+ 0, /* global_use */
+ 0, /* local_use */
+ 0, /* next */
+ image_transform_ini_end,
+ image_transform_set_end,
+ image_transform_mod_end,
+ 0 /* never called, I want it to crash if it is! */
+};
+
+/* Reader callbacks and implementations, where they differ from the standard
+ * ones.
+ */
+static void
+transform_display_init(transform_display *dp, png_modifier *pm, png_uint_32 id,
+ PNG_CONST image_transform *transform_list)
+{
+ memset(dp, 0, sizeof *dp);
+
+ /* Standard fields */
+ standard_display_init(&dp->this, &pm->this, id, 0/*do_interlace*/,
+ pm->use_update_info);
+
+ /* Parameter fields */
+ dp->pm = pm;
+ dp->transform_list = transform_list;
+
+ /* Local variable fields */
+ dp->output_colour_type = 255; /* invalid */
+ dp->output_bit_depth = 255; /* invalid */
+}
+
+static void
+transform_info_imp(transform_display *dp, png_structp pp, png_infop pi)
+{
+ /* Reuse the standard stuff as appropriate. */
+ standard_info_part1(&dp->this, pp, pi);
+
+ /* Now set the list of transforms. */
+ dp->transform_list->set(dp->transform_list, dp, pp, pi);
+
+ /* Update the info structure for these transforms: */
+ {
+ int i = dp->this.use_update_info;
+ /* Always do one call, even if use_update_info is 0. */
+ do
+ png_read_update_info(pp, pi);
+ while (--i > 0);
+ }
+
+ /* And get the output information into the standard_display */
+ standard_info_part2(&dp->this, pp, pi, 1/*images*/);
+
+ /* Plus the extra stuff we need for the transform tests: */
+ dp->output_colour_type = png_get_color_type(pp, pi);
+ dp->output_bit_depth = png_get_bit_depth(pp, pi);
+
+ /* Validate the combination of colour type and bit depth that we are getting
+ * out of libpng; the semantics of something not in the PNG spec are, at
+ * best, unclear.
+ */
+ switch (dp->output_colour_type)
+ {
+ case PNG_COLOR_TYPE_PALETTE:
+ if (dp->output_bit_depth > 8) goto error;
+ /*FALL THROUGH*/
+ case PNG_COLOR_TYPE_GRAY:
+ if (dp->output_bit_depth == 1 || dp->output_bit_depth == 2 ||
+ dp->output_bit_depth == 4)
+ break;
+ /*FALL THROUGH*/
+ default:
+ if (dp->output_bit_depth == 8 || dp->output_bit_depth == 16)
+ break;
+ /*FALL THROUGH*/
+ error:
+ {
+ char message[128];
+ size_t pos;
+
+ pos = safecat(message, sizeof message, 0,
+ "invalid final bit depth: colour type(");
+ pos = safecatn(message, sizeof message, pos, dp->output_colour_type);
+ pos = safecat(message, sizeof message, pos, ") with bit depth: ");
+ pos = safecatn(message, sizeof message, pos, dp->output_bit_depth);
+
+ png_error(pp, message);
+ }
+ }
+
+ /* Use a test pixel to check that the output agrees with what we expect -
+ * this avoids running the whole test if the output is unexpected.
+ */
+ {
+ image_pixel test_pixel;
+
+ memset(&test_pixel, 0, sizeof test_pixel);
+ test_pixel.colour_type = dp->this.colour_type; /* input */
+ test_pixel.bit_depth = dp->this.bit_depth;
+ if (test_pixel.colour_type == PNG_COLOR_TYPE_PALETTE)
+ test_pixel.sample_depth = 8;
+ else
+ test_pixel.sample_depth = test_pixel.bit_depth;
+ /* Don't need sBIT here, but it must be set to non-zero to avoid
+ * arithmetic overflows.
+ */
+ test_pixel.have_tRNS = dp->this.is_transparent;
+ test_pixel.red_sBIT = test_pixel.green_sBIT = test_pixel.blue_sBIT =
+ test_pixel.alpha_sBIT = test_pixel.sample_depth;
+
+ dp->transform_list->mod(dp->transform_list, &test_pixel, pp, dp);
+
+ if (test_pixel.colour_type != dp->output_colour_type)
+ {
+ char message[128];
+ size_t pos = safecat(message, sizeof message, 0, "colour type ");
+
+ pos = safecatn(message, sizeof message, pos, dp->output_colour_type);
+ pos = safecat(message, sizeof message, pos, " expected ");
+ pos = safecatn(message, sizeof message, pos, test_pixel.colour_type);
+
+ png_error(pp, message);
+ }
+
+ if (test_pixel.bit_depth != dp->output_bit_depth)
+ {
+ char message[128];
+ size_t pos = safecat(message, sizeof message, 0, "bit depth ");
+
+ pos = safecatn(message, sizeof message, pos, dp->output_bit_depth);
+ pos = safecat(message, sizeof message, pos, " expected ");
+ pos = safecatn(message, sizeof message, pos, test_pixel.bit_depth);
+
+ png_error(pp, message);
+ }
+
+ /* If both bit depth and colour type are correct check the sample depth.
+ * I believe these are both internal errors.
+ */
+ if (test_pixel.colour_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (test_pixel.sample_depth != 8) /* oops - internal error! */
+ png_error(pp, "pngvalid: internal: palette sample depth not 8");
+ }
+ else if (test_pixel.sample_depth != dp->output_bit_depth)
+ {
+ char message[128];
+ size_t pos = safecat(message, sizeof message, 0,
+ "internal: sample depth ");
+
+ pos = safecatn(message, sizeof message, pos, dp->output_bit_depth);
+ pos = safecat(message, sizeof message, pos, " expected ");
+ pos = safecatn(message, sizeof message, pos, test_pixel.sample_depth);
+
+ png_error(pp, message);
+ }
+ }
+}
+
+static void
+transform_info(png_structp pp, png_infop pi)
+{
+ transform_info_imp(voidcast(transform_display*, png_get_progressive_ptr(pp)),
+ pp, pi);
+}
+
+static void
+transform_range_check(png_structp pp, unsigned int r, unsigned int g,
+ unsigned int b, unsigned int a, unsigned int in_digitized, double in,
+ unsigned int out, png_byte sample_depth, double err, double limit,
+ PNG_CONST char *name, double digitization_error)
+{
+ /* Compare the scaled, digitzed, values of our local calculation (in+-err)
+ * with the digitized values libpng produced; 'sample_depth' is the actual
+ * digitization depth of the libpng output colors (the bit depth except for
+ * palette images where it is always 8.) The check on 'err' is to detect
+ * internal errors in pngvalid itself.
+ */
+ unsigned int max = (1U<<sample_depth)-1;
+ double in_min = ceil((in-err)*max - digitization_error);
+ double in_max = floor((in+err)*max + digitization_error);
+ if (err > limit || !(out >= in_min && out <= in_max))
+ {
+ char message[256];
+ size_t pos;
+
+ pos = safecat(message, sizeof message, 0, name);
+ pos = safecat(message, sizeof message, pos, " output value error: rgba(");
+ pos = safecatn(message, sizeof message, pos, r);
+ pos = safecat(message, sizeof message, pos, ",");
+ pos = safecatn(message, sizeof message, pos, g);
+ pos = safecat(message, sizeof message, pos, ",");
+ pos = safecatn(message, sizeof message, pos, b);
+ pos = safecat(message, sizeof message, pos, ",");
+ pos = safecatn(message, sizeof message, pos, a);
+ pos = safecat(message, sizeof message, pos, "): ");
+ pos = safecatn(message, sizeof message, pos, out);
+ pos = safecat(message, sizeof message, pos, " expected: ");
+ pos = safecatn(message, sizeof message, pos, in_digitized);
+ pos = safecat(message, sizeof message, pos, " (");
+ pos = safecatd(message, sizeof message, pos, (in-err)*max, 3);
+ pos = safecat(message, sizeof message, pos, "..");
+ pos = safecatd(message, sizeof message, pos, (in+err)*max, 3);
+ pos = safecat(message, sizeof message, pos, ")");
+
+ png_error(pp, message);
+ }
+}
+
+static void
+transform_image_validate(transform_display *dp, png_structp pp, png_infop pi)
+{
+ /* Constants for the loop below: */
+ PNG_CONST png_store* PNG_CONST ps = dp->this.ps;
+ PNG_CONST png_byte in_ct = dp->this.colour_type;
+ PNG_CONST png_byte in_bd = dp->this.bit_depth;
+ PNG_CONST png_uint_32 w = dp->this.w;
+ PNG_CONST png_uint_32 h = dp->this.h;
+ PNG_CONST png_byte out_ct = dp->output_colour_type;
+ PNG_CONST png_byte out_bd = dp->output_bit_depth;
+ PNG_CONST png_byte sample_depth = (png_byte)(out_ct ==
+ PNG_COLOR_TYPE_PALETTE ? 8 : out_bd);
+ PNG_CONST png_byte red_sBIT = dp->this.red_sBIT;
+ PNG_CONST png_byte green_sBIT = dp->this.green_sBIT;
+ PNG_CONST png_byte blue_sBIT = dp->this.blue_sBIT;
+ PNG_CONST png_byte alpha_sBIT = dp->this.alpha_sBIT;
+ PNG_CONST int have_tRNS = dp->this.is_transparent;
+ double digitization_error;
+
+ store_palette out_palette;
+ png_uint_32 y;
+
+ UNUSED(pi)
+
+ /* Check for row overwrite errors */
+ store_image_check(dp->this.ps, pp, 0);
+
+ /* Read the palette corresponding to the output if the output colour type
+ * indicates a palette, othewise set out_palette to garbage.
+ */
+ if (out_ct == PNG_COLOR_TYPE_PALETTE)
+ {
+ /* Validate that the palette count itself has not changed - this is not
+ * expected.
+ */
+ int npalette = (-1);
+
+ (void)read_palette(out_palette, &npalette, pp, pi);
+ if (npalette != dp->this.npalette)
+ png_error(pp, "unexpected change in palette size");
+
+ digitization_error = .5;
+ }
+ else
+ {
+ png_byte in_sample_depth;
+
+ memset(out_palette, 0x5e, sizeof out_palette);
+
+ /* assume-8-bit-calculations means assume that if the input has 8 bit
+ * (or less) samples and the output has 16 bit samples the calculations
+ * will be done with 8 bit precision, not 16.
+ *
+ * TODO: fix this in libpng; png_set_expand_16 should cause 16 bit
+ * calculations to be used throughout.
+ */
+ if (in_ct == PNG_COLOR_TYPE_PALETTE || in_bd < 16)
+ in_sample_depth = 8;
+ else
+ in_sample_depth = in_bd;
+
+ if (sample_depth != 16 || in_sample_depth > 8 ||
+ !dp->pm->calculations_use_input_precision)
+ digitization_error = .5;
+
+ /* Else errors are at 8 bit precision, scale .5 in 8 bits to the 16 bits:
+ */
+ else
+ digitization_error = .5 * 257;
+ }
+
+ for (y=0; y<h; ++y)
+ {
+ png_const_bytep PNG_CONST pRow = store_image_row(ps, pp, 0, y);
+ png_uint_32 x;
+
+ /* The original, standard, row pre-transforms. */
+ png_byte std[STANDARD_ROWMAX];
+
+ transform_row(pp, std, in_ct, in_bd, y);
+
+ /* Go through each original pixel transforming it and comparing with what
+ * libpng did to the same pixel.
+ */
+ for (x=0; x<w; ++x)
+ {
+ image_pixel in_pixel, out_pixel;
+ unsigned int r, g, b, a;
+
+ /* Find out what we think the pixel should be: */
+ image_pixel_init(&in_pixel, std, in_ct, in_bd, x, dp->this.palette);
+
+ in_pixel.red_sBIT = red_sBIT;
+ in_pixel.green_sBIT = green_sBIT;
+ in_pixel.blue_sBIT = blue_sBIT;
+ in_pixel.alpha_sBIT = alpha_sBIT;
+ in_pixel.have_tRNS = have_tRNS;
+
+ /* For error detection, below. */
+ r = in_pixel.red;
+ g = in_pixel.green;
+ b = in_pixel.blue;
+ a = in_pixel.alpha;
+
+ dp->transform_list->mod(dp->transform_list, &in_pixel, pp, dp);
+
+ /* Read the output pixel and compare it to what we got, we don't
+ * use the error field here, so no need to update sBIT.
+ */
+ image_pixel_init(&out_pixel, pRow, out_ct, out_bd, x, out_palette);
+
+ /* We don't expect changes to the index here even if the bit depth is
+ * changed.
+ */
+ if (in_ct == PNG_COLOR_TYPE_PALETTE &&
+ out_ct == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (in_pixel.palette_index != out_pixel.palette_index)
+ png_error(pp, "unexpected transformed palette index");
+ }
+
+ /* Check the colours for palette images too - in fact the palette could
+ * be separately verified itself in most cases.
+ */
+ if (in_pixel.red != out_pixel.red)
+ transform_range_check(pp, r, g, b, a, in_pixel.red, in_pixel.redf,
+ out_pixel.red, sample_depth, in_pixel.rede,
+ dp->pm->limit + 1./(2*((1U<<in_pixel.red_sBIT)-1)), "red/gray",
+ digitization_error);
+
+ if ((out_ct & PNG_COLOR_MASK_COLOR) != 0 &&
+ in_pixel.green != out_pixel.green)
+ transform_range_check(pp, r, g, b, a, in_pixel.green,
+ in_pixel.greenf, out_pixel.green, sample_depth, in_pixel.greene,
+ dp->pm->limit + 1./(2*((1U<<in_pixel.green_sBIT)-1)), "green",
+ digitization_error);
+
+ if ((out_ct & PNG_COLOR_MASK_COLOR) != 0 &&
+ in_pixel.blue != out_pixel.blue)
+ transform_range_check(pp, r, g, b, a, in_pixel.blue, in_pixel.bluef,
+ out_pixel.blue, sample_depth, in_pixel.bluee,
+ dp->pm->limit + 1./(2*((1U<<in_pixel.blue_sBIT)-1)), "blue",
+ digitization_error);
+
+ if ((out_ct & PNG_COLOR_MASK_ALPHA) != 0 &&
+ in_pixel.alpha != out_pixel.alpha)
+ transform_range_check(pp, r, g, b, a, in_pixel.alpha,
+ in_pixel.alphaf, out_pixel.alpha, sample_depth, in_pixel.alphae,
+ dp->pm->limit + 1./(2*((1U<<in_pixel.alpha_sBIT)-1)), "alpha",
+ digitization_error);
+ } /* pixel (x) loop */
+ } /* row (y) loop */
+
+ /* Record that something was actually checked to avoid a false positive. */
+ dp->this.ps->validated = 1;
+}
+
+static void
+transform_end(png_structp pp, png_infop pi)
+{
+ transform_display *dp = voidcast(transform_display*,
+ png_get_progressive_ptr(pp));
+
+ if (!dp->this.speed)
+ transform_image_validate(dp, pp, pi);
+ else
+ dp->this.ps->validated = 1;
+}
+
+/* A single test run. */
+static void
+transform_test(png_modifier *pmIn, PNG_CONST png_uint_32 idIn,
+ PNG_CONST image_transform* transform_listIn, PNG_CONST char * volatile name)
+{
+ transform_display d;
+ context(&pmIn->this, fault);
+
+ transform_display_init(&d, pmIn, idIn, transform_listIn);
+
+ Try
+ {
+ size_t pos = 0;
+ png_structp pp;
+ png_infop pi;
+ char full_name[256];
+
+ /* Make sure the encoding fields are correct and enter the required
+ * modifications.
+ */
+ transform_set_encoding(&d);
+
+ /* Add any modifications required by the transform list. */
+ d.transform_list->ini(d.transform_list, &d);
+
+ /* Add the color space information, if any, to the name. */
+ pos = safecat(full_name, sizeof full_name, pos, name);
+ pos = safecat_current_encoding(full_name, sizeof full_name, pos, d.pm);
+
+ /* Get a png_struct for reading the image. */
+ pp = set_modifier_for_read(d.pm, &pi, d.this.id, full_name);
+ standard_palette_init(&d.this);
+
+# if 0
+ /* Logging (debugging only) */
+ {
+ char buffer[256];
+
+ (void)store_message(&d.pm->this, pp, buffer, sizeof buffer, 0,
+ "running test");
+
+ fprintf(stderr, "%s\n", buffer);
+ }
+# endif
+
+ /* Introduce the correct read function. */
+ if (d.pm->this.progressive)
+ {
+ /* Share the row function with the standard implementation. */
+ png_set_progressive_read_fn(pp, &d, transform_info, progressive_row,
+ transform_end);
+
+ /* Now feed data into the reader until we reach the end: */
+ modifier_progressive_read(d.pm, pp, pi);
+ }
+ else
+ {
+ /* modifier_read expects a png_modifier* */
+ png_set_read_fn(pp, d.pm, modifier_read);
+
+ /* Check the header values: */
+ png_read_info(pp, pi);
+
+ /* Process the 'info' requirements. Only one image is generated */
+ transform_info_imp(&d, pp, pi);
+
+ sequential_row(&d.this, pp, pi, -1, 0);
+
+ if (!d.this.speed)
+ transform_image_validate(&d, pp, pi);
+ else
+ d.this.ps->validated = 1;
+ }
+
+ modifier_reset(d.pm);
+ }
+
+ Catch(fault)
+ {
+ modifier_reset((png_modifier*)fault);
+ }
+}
+
+/* The transforms: */
+#define ITSTRUCT(name) image_transform_##name
+#define ITDATA(name) image_transform_data_##name
+#define image_transform_ini image_transform_default_ini
+#define IT(name)\
+static image_transform ITSTRUCT(name) =\
+{\
+ #name,\
+ 1, /*enable*/\
+ &PT, /*list*/\
+ 0, /*global_use*/\
+ 0, /*local_use*/\
+ 0, /*next*/\
+ image_transform_ini,\
+ image_transform_png_set_##name##_set,\
+ image_transform_png_set_##name##_mod,\
+ image_transform_png_set_##name##_add\
+}
+#define PT ITSTRUCT(end) /* stores the previous transform */
+
+/* To save code: */
+static void
+image_transform_default_ini(PNG_CONST image_transform *this,
+ transform_display *that)
+{
+ this->next->ini(this->next, that);
+}
+
+static int
+image_transform_default_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ UNUSED(colour_type)
+ UNUSED(bit_depth)
+
+ this->next = *that;
+ *that = this;
+
+ return 1;
+}
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+/* png_set_palette_to_rgb */
+static void
+image_transform_png_set_palette_to_rgb_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ png_set_palette_to_rgb(pp);
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_palette_to_rgb_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ if (that->colour_type == PNG_COLOR_TYPE_PALETTE)
+ image_pixel_convert_PLTE(that);
+
+ this->next->mod(this->next, that, pp, display);
+}
+
+static int
+image_transform_png_set_palette_to_rgb_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ UNUSED(bit_depth)
+
+ this->next = *that;
+ *that = this;
+
+ return colour_type == PNG_COLOR_TYPE_PALETTE;
+}
+
+IT(palette_to_rgb);
+#undef PT
+#define PT ITSTRUCT(palette_to_rgb)
+#endif /* PNG_READ_EXPAND_SUPPORTED */
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+/* png_set_tRNS_to_alpha */
+static void
+image_transform_png_set_tRNS_to_alpha_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ png_set_tRNS_to_alpha(pp);
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_tRNS_to_alpha_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ /* LIBPNG BUG: this always forces palette images to RGB. */
+ if (that->colour_type == PNG_COLOR_TYPE_PALETTE)
+ image_pixel_convert_PLTE(that);
+
+ /* This effectively does an 'expand' only if there is some transparency to
+ * convert to an alpha channel.
+ */
+ if (that->have_tRNS)
+ image_pixel_add_alpha(that, &display->this);
+
+ /* LIBPNG BUG: otherwise libpng still expands to 8 bits! */
+ else
+ {
+ if (that->bit_depth < 8)
+ that->bit_depth =8;
+ if (that->sample_depth < 8)
+ that->sample_depth = 8;
+ }
+
+ this->next->mod(this->next, that, pp, display);
+}
+
+static int
+image_transform_png_set_tRNS_to_alpha_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ UNUSED(bit_depth)
+
+ this->next = *that;
+ *that = this;
+
+ /* We don't know yet whether there will be a tRNS chunk, but we know that
+ * this transformation should do nothing if there already is an alpha
+ * channel.
+ */
+ return (colour_type & PNG_COLOR_MASK_ALPHA) == 0;
+}
+
+IT(tRNS_to_alpha);
+#undef PT
+#define PT ITSTRUCT(tRNS_to_alpha)
+#endif /* PNG_READ_EXPAND_SUPPORTED */
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+/* png_set_gray_to_rgb */
+static void
+image_transform_png_set_gray_to_rgb_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ png_set_gray_to_rgb(pp);
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_gray_to_rgb_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ /* NOTE: we can actually pend the tRNS processing at this point because we
+ * can correctly recognize the original pixel value even though we have
+ * mapped the one gray channel to the three RGB ones, but in fact libpng
+ * doesn't do this, so we don't either.
+ */
+ if ((that->colour_type & PNG_COLOR_MASK_COLOR) == 0 && that->have_tRNS)
+ image_pixel_add_alpha(that, &display->this);
+
+ /* Simply expand the bit depth and alter the colour type as required. */
+ if (that->colour_type == PNG_COLOR_TYPE_GRAY)
+ {
+ /* RGB images have a bit depth at least equal to '8' */
+ if (that->bit_depth < 8)
+ that->sample_depth = that->bit_depth = 8;
+
+ /* And just changing the colour type works here because the green and blue
+ * channels are being maintained in lock-step with the red/gray:
+ */
+ that->colour_type = PNG_COLOR_TYPE_RGB;
+ }
+
+ else if (that->colour_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ that->colour_type = PNG_COLOR_TYPE_RGB_ALPHA;
+
+ this->next->mod(this->next, that, pp, display);
+}
+
+static int
+image_transform_png_set_gray_to_rgb_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ UNUSED(bit_depth)
+
+ this->next = *that;
+ *that = this;
+
+ return (colour_type & PNG_COLOR_MASK_COLOR) == 0;
+}
+
+IT(gray_to_rgb);
+#undef PT
+#define PT ITSTRUCT(gray_to_rgb)
+#endif /* PNG_READ_GRAY_TO_RGB_SUPPORTED */
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+/* png_set_expand */
+static void
+image_transform_png_set_expand_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ png_set_expand(pp);
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_expand_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ /* The general expand case depends on what the colour type is: */
+ if (that->colour_type == PNG_COLOR_TYPE_PALETTE)
+ image_pixel_convert_PLTE(that);
+ else if (that->bit_depth < 8) /* grayscale */
+ that->sample_depth = that->bit_depth = 8;
+
+ if (that->have_tRNS)
+ image_pixel_add_alpha(that, &display->this);
+
+ this->next->mod(this->next, that, pp, display);
+}
+
+static int
+image_transform_png_set_expand_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ UNUSED(bit_depth)
+
+ this->next = *that;
+ *that = this;
+
+ /* 'expand' should do nothing for RGBA or GA input - no tRNS and the bit
+ * depth is at least 8 already.
+ */
+ return (colour_type & PNG_COLOR_MASK_ALPHA) == 0;
+}
+
+IT(expand);
+#undef PT
+#define PT ITSTRUCT(expand)
+#endif /* PNG_READ_EXPAND_SUPPORTED */
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+/* png_set_expand_gray_1_2_4_to_8
+ * LIBPNG BUG: this just does an 'expand'
+ */
+static void
+image_transform_png_set_expand_gray_1_2_4_to_8_set(
+ PNG_CONST image_transform *this, transform_display *that, png_structp pp,
+ png_infop pi)
+{
+ png_set_expand_gray_1_2_4_to_8(pp);
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_expand_gray_1_2_4_to_8_mod(
+ PNG_CONST image_transform *this, image_pixel *that, png_structp pp,
+ PNG_CONST transform_display *display)
+{
+ image_transform_png_set_expand_mod(this, that, pp, display);
+}
+
+static int
+image_transform_png_set_expand_gray_1_2_4_to_8_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ return image_transform_png_set_expand_add(this, that, colour_type,
+ bit_depth);
+}
+
+IT(expand_gray_1_2_4_to_8);
+#undef PT
+#define PT ITSTRUCT(expand_gray_1_2_4_to_8)
+#endif /* PNG_READ_EXPAND_SUPPORTED */
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+/* png_set_expand_16 */
+static void
+image_transform_png_set_expand_16_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ png_set_expand_16(pp);
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_expand_16_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ /* Expect expand_16 to expand everything to 16 bits as a result of also
+ * causing 'expand' to happen.
+ */
+ if (that->colour_type == PNG_COLOR_TYPE_PALETTE)
+ image_pixel_convert_PLTE(that);
+
+ if (that->have_tRNS)
+ image_pixel_add_alpha(that, &display->this);
+
+ if (that->bit_depth < 16)
+ that->sample_depth = that->bit_depth = 16;
+
+ this->next->mod(this->next, that, pp, display);
+}
+
+static int
+image_transform_png_set_expand_16_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ UNUSED(colour_type)
+
+ this->next = *that;
+ *that = this;
+
+ /* expand_16 does something unless the bit depth is already 16. */
+ return bit_depth < 16;
+}
+
+IT(expand_16);
+#undef PT
+#define PT ITSTRUCT(expand_16)
+#endif /* PNG_READ_EXPAND_16_SUPPORTED */
+
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED /* API added in 1.5.4 */
+/* png_set_scale_16 */
+static void
+image_transform_png_set_scale_16_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ png_set_scale_16(pp);
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_scale_16_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ if (that->bit_depth == 16)
+ {
+ that->sample_depth = that->bit_depth = 8;
+ if (that->red_sBIT > 8) that->red_sBIT = 8;
+ if (that->green_sBIT > 8) that->green_sBIT = 8;
+ if (that->blue_sBIT > 8) that->blue_sBIT = 8;
+ if (that->alpha_sBIT > 8) that->alpha_sBIT = 8;
+ }
+
+ this->next->mod(this->next, that, pp, display);
+}
+
+static int
+image_transform_png_set_scale_16_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ UNUSED(colour_type)
+
+ this->next = *that;
+ *that = this;
+
+ return bit_depth > 8;
+}
+
+IT(scale_16);
+#undef PT
+#define PT ITSTRUCT(scale_16)
+#endif /* PNG_READ_SCALE_16_TO_8_SUPPORTED (1.5.4 on) */
+
+#ifdef PNG_READ_16_TO_8_SUPPORTED /* the default before 1.5.4 */
+/* png_set_strip_16 */
+static void
+image_transform_png_set_strip_16_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ png_set_strip_16(pp);
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_strip_16_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ if (that->bit_depth == 16)
+ {
+ that->sample_depth = that->bit_depth = 8;
+ if (that->red_sBIT > 8) that->red_sBIT = 8;
+ if (that->green_sBIT > 8) that->green_sBIT = 8;
+ if (that->blue_sBIT > 8) that->blue_sBIT = 8;
+ if (that->alpha_sBIT > 8) that->alpha_sBIT = 8;
+
+ /* Prior to 1.5.4 png_set_strip_16 would use an 'accurate' method if this
+ * configuration option is set. From 1.5.4 the flag is never set and the
+ * 'scale' API (above) must be used.
+ */
+# ifdef PNG_READ_ACCURATE_SCALE_SUPPORTED
+# if PNG_LIBPNG_VER >= 10504
+# error PNG_READ_ACCURATE_SCALE should not be set
+# endif
+
+ /* The strip 16 algorithm drops the low 8 bits rather than calculating
+ * 1/257, so we need to adjust the permitted errors appropriately:
+ * Notice that this is only relevant prior to the addition of the
+ * png_set_scale_16 API in 1.5.4 (but 1.5.4+ always defines the above!)
+ */
+ {
+ PNG_CONST double d = (255-128.5)/65535;
+ that->rede += d;
+ that->greene += d;
+ that->bluee += d;
+ that->alphae += d;
+ }
+# endif
+ }
+
+ this->next->mod(this->next, that, pp, display);
+}
+
+static int
+image_transform_png_set_strip_16_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ UNUSED(colour_type)
+
+ this->next = *that;
+ *that = this;
+
+ return bit_depth > 8;
+}
+
+IT(strip_16);
+#undef PT
+#define PT ITSTRUCT(strip_16)
+#endif /* PNG_READ_16_TO_8_SUPPORTED */
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+/* png_set_strip_alpha */
+static void
+image_transform_png_set_strip_alpha_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ png_set_strip_alpha(pp);
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_strip_alpha_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ if (that->colour_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ that->colour_type = PNG_COLOR_TYPE_GRAY;
+ else if (that->colour_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ that->colour_type = PNG_COLOR_TYPE_RGB;
+
+ that->have_tRNS = 0;
+ that->alphaf = 1;
+
+ this->next->mod(this->next, that, pp, display);
+}
+
+static int
+image_transform_png_set_strip_alpha_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ UNUSED(bit_depth)
+
+ this->next = *that;
+ *that = this;
+
+ return (colour_type & PNG_COLOR_MASK_ALPHA) != 0;
+}
+
+IT(strip_alpha);
+#undef PT
+#define PT ITSTRUCT(strip_alpha)
+#endif /* PNG_READ_STRIP_ALPHA_SUPPORTED */
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+/* png_set_rgb_to_gray(png_structp, int err_action, double red, double green)
+ * png_set_rgb_to_gray_fixed(png_structp, int err_action, png_fixed_point red,
+ * png_fixed_point green)
+ * png_get_rgb_to_gray_status
+ *
+ * The 'default' test here uses values known to be used inside libpng:
+ *
+ * red: 6968
+ * green: 23434
+ * blue: 2366
+ *
+ * These values are being retained for compatibility, along with the somewhat
+ * broken truncation calculation in the fast-and-inaccurate code path. Older
+ * versions of libpng will fail the accuracy tests below because they use the
+ * truncation algorithm everywhere.
+ */
+#define data ITDATA(rgb_to_gray)
+static struct
+{
+ double gamma; /* File gamma to use in processing */
+
+ /* The following are the parameters for png_set_rgb_to_gray: */
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ double red_to_set;
+ double green_to_set;
+# else
+ png_fixed_point red_to_set;
+ png_fixed_point green_to_set;
+# endif
+
+ /* The actual coefficients: */
+ double red_coefficient;
+ double green_coefficient;
+ double blue_coefficient;
+
+ /* Set if the coeefficients have been overridden. */
+ int coefficients_overridden;
+} data;
+
+#undef image_transform_ini
+#define image_transform_ini image_transform_png_set_rgb_to_gray_ini
+static void
+image_transform_png_set_rgb_to_gray_ini(PNG_CONST image_transform *this,
+ transform_display *that)
+{
+ png_modifier *pm = that->pm;
+ PNG_CONST color_encoding *e = pm->current_encoding;
+
+ UNUSED(this)
+
+ /* Since we check the encoding this flag must be set: */
+ pm->test_uses_encoding = 1;
+
+ /* If 'e' is not NULL chromaticity information is present and either a cHRM
+ * or an sRGB chunk will be inserted.
+ */
+ if (e != 0)
+ {
+ /* Coefficients come from the encoding, but may need to be normalized to a
+ * white point Y of 1.0
+ */
+ PNG_CONST double whiteY = e->red.Y + e->green.Y + e->blue.Y;
+
+ data.red_coefficient = e->red.Y;
+ data.green_coefficient = e->green.Y;
+ data.blue_coefficient = e->blue.Y;
+
+ if (whiteY != 1)
+ {
+ data.red_coefficient /= whiteY;
+ data.green_coefficient /= whiteY;
+ data.blue_coefficient /= whiteY;
+ }
+ }
+
+ else
+ {
+ /* The default (built in) coeffcients, as above: */
+ data.red_coefficient = 6968 / 32768.;
+ data.green_coefficient = 23434 / 32768.;
+ data.blue_coefficient = 2366 / 32768.;
+ }
+
+ data.gamma = pm->current_gamma;
+
+ /* If not set then the calculations assume linear encoding (implicitly): */
+ if (data.gamma == 0)
+ data.gamma = 1;
+
+ /* The arguments to png_set_rgb_to_gray can override the coefficients implied
+ * by the color space encoding. If doing exhaustive checks do the override
+ * in each case, otherwise do it randomly.
+ */
+ if (pm->test_exhaustive)
+ {
+ /* First time in coefficients_overridden is 0, the following sets it to 1,
+ * so repeat if it is set. If a test fails this may mean we subsequently
+ * skip a non-override test, ignore that.
+ */
+ data.coefficients_overridden = !data.coefficients_overridden;
+ pm->repeat = data.coefficients_overridden != 0;
+ }
+
+ else
+ data.coefficients_overridden = random_choice();
+
+ if (data.coefficients_overridden)
+ {
+ /* These values override the color encoding defaults, simply use random
+ * numbers.
+ */
+ png_uint_32 ru;
+ double total;
+
+ RANDOMIZE(ru);
+ data.green_coefficient = total = (ru & 0xffff) / 65535.;
+ ru >>= 16;
+ data.red_coefficient = (1 - total) * (ru & 0xffff) / 65535.;
+ total += data.red_coefficient;
+ data.blue_coefficient = 1 - total;
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ data.red_to_set = data.red_coefficient;
+ data.green_to_set = data.green_coefficient;
+# else
+ data.red_to_set = fix(data.red_coefficient);
+ data.green_to_set = fix(data.green_coefficient);
+# endif
+
+ /* The following just changes the error messages: */
+ pm->encoding_ignored = 1;
+ }
+
+ else
+ {
+ data.red_to_set = -1;
+ data.green_to_set = -1;
+ }
+
+ /* Adjust the error limit in the png_modifier because of the larger errors
+ * produced in the digitization during the gamma handling.
+ */
+ if (data.gamma != 1) /* Use gamma tables */
+ {
+ if (that->this.bit_depth == 16 || pm->assume_16_bit_calculations)
+ {
+ /* The 16 bit case ends up producing a maximum error of about
+ * +/-5 in 65535, allow for +/-8 with the given gamma.
+ */
+ that->pm->limit += pow(8./65535, data.gamma);
+ }
+
+ else
+ {
+ /* Rounding to 8 bits in the linear space causes massive errors which
+ * will trigger the error check in transform_range_check. Fix that
+ * here by taking the gamma encoding into account.
+ */
+ that->pm->limit += pow(1./255, data.gamma);
+ }
+ }
+
+ else
+ {
+ /* With no gamma correction a large error comes from the truncation of the
+ * calculation in the 8 bit case, allow for that here.
+ */
+ if (that->this.bit_depth != 16)
+ that->pm->limit += 4E-3;
+ }
+}
+
+static void
+image_transform_png_set_rgb_to_gray_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ PNG_CONST int error_action = 1; /* no error, no defines in png.h */
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_set_rgb_to_gray(pp, error_action, data.red_to_set, data.green_to_set);
+# else
+ png_set_rgb_to_gray_fixed(pp, error_action, data.red_to_set,
+ data.green_to_set);
+# endif
+
+# ifdef PNG_READ_cHRM_SUPPORTED
+ if (that->pm->current_encoding != 0)
+ {
+ /* We have an encoding so a cHRM chunk may have been set; if so then
+ * check that the libpng APIs give the correct (X,Y,Z) values within
+ * some margin of error for the round trip through the chromaticity
+ * form.
+ */
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+# define API_function png_get_cHRM_XYZ
+# define API_form "FP"
+# define API_type double
+# define API_cvt(x) (x)
+# else
+# define API_function png_get_cHRM_XYZ_fixed
+# define API_form "fixed"
+# define API_type png_fixed_point
+# define API_cvt(x) ((double)(x)/PNG_FP_1)
+# endif
+
+ API_type rX, gX, bX;
+ API_type rY, gY, bY;
+ API_type rZ, gZ, bZ;
+
+ if ((API_function(pp, pi, &rX, &rY, &rZ, &gX, &gY, &gZ, &bX, &bY, &bZ)
+ & PNG_INFO_cHRM) != 0)
+ {
+ double maxe;
+ PNG_CONST char *el;
+ color_encoding e, o;
+
+ /* Expect libpng to return a normalized result, but the original
+ * color space encoding may not be normalized.
+ */
+ modifier_current_encoding(that->pm, &o);
+ normalize_color_encoding(&o);
+
+ /* Sanity check the pngvalid code - the coefficients should match
+ * the normalized Y values of the encoding unless they were
+ * overridden.
+ */
+ if (data.red_to_set == -1 && data.green_to_set == -1 &&
+ (fabs(o.red.Y - data.red_coefficient) > DBL_EPSILON ||
+ fabs(o.green.Y - data.green_coefficient) > DBL_EPSILON ||
+ fabs(o.blue.Y - data.blue_coefficient) > DBL_EPSILON))
+ png_error(pp, "internal pngvalid cHRM coefficient error");
+
+ /* Generate a colour space encoding. */
+ e.gamma = o.gamma; /* not used */
+ e.red.X = API_cvt(rX);
+ e.red.Y = API_cvt(rY);
+ e.red.Z = API_cvt(rZ);
+ e.green.X = API_cvt(gX);
+ e.green.Y = API_cvt(gY);
+ e.green.Z = API_cvt(gZ);
+ e.blue.X = API_cvt(bX);
+ e.blue.Y = API_cvt(bY);
+ e.blue.Z = API_cvt(bZ);
+
+ /* This should match the original one from the png_modifier, within
+ * the range permitted by the libpng fixed point representation.
+ */
+ maxe = 0;
+ el = "-"; /* Set to element name with error */
+
+# define CHECK(col,x)\
+ {\
+ double err = fabs(o.col.x - e.col.x);\
+ if (err > maxe)\
+ {\
+ maxe = err;\
+ el = #col "(" #x ")";\
+ }\
+ }
+
+ CHECK(red,X)
+ CHECK(red,Y)
+ CHECK(red,Z)
+ CHECK(green,X)
+ CHECK(green,Y)
+ CHECK(green,Z)
+ CHECK(blue,X)
+ CHECK(blue,Y)
+ CHECK(blue,Z)
+
+ /* Here in both fixed and floating cases to check the values read
+ * from the cHRm chunk. PNG uses fixed point in the cHRM chunk, so
+ * we can't expect better than +/-.5E-5 on the result, allow 1E-5.
+ */
+ if (maxe >= 1E-5)
+ {
+ size_t pos = 0;
+ char buffer[256];
+
+ pos = safecat(buffer, sizeof buffer, pos, API_form);
+ pos = safecat(buffer, sizeof buffer, pos, " cHRM ");
+ pos = safecat(buffer, sizeof buffer, pos, el);
+ pos = safecat(buffer, sizeof buffer, pos, " error: ");
+ pos = safecatd(buffer, sizeof buffer, pos, maxe, 7);
+ pos = safecat(buffer, sizeof buffer, pos, " ");
+ /* Print the color space without the gamma value: */
+ pos = safecat_color_encoding(buffer, sizeof buffer, pos, &o, 0);
+ pos = safecat(buffer, sizeof buffer, pos, " -> ");
+ pos = safecat_color_encoding(buffer, sizeof buffer, pos, &e, 0);
+
+ png_error(pp, buffer);
+ }
+ }
+ }
+# endif /* READ_cHRM */
+
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_rgb_to_gray_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ if ((that->colour_type & PNG_COLOR_MASK_COLOR) != 0)
+ {
+ double gray, err;
+
+ if (that->colour_type == PNG_COLOR_TYPE_PALETTE)
+ image_pixel_convert_PLTE(that);
+
+ /* Image now has RGB channels... */
+ {
+ PNG_CONST png_modifier *pm = display->pm;
+ PNG_CONST unsigned int sample_depth = that->sample_depth;
+ int isgray;
+ double r, g, b;
+ double rlo, rhi, glo, ghi, blo, bhi, graylo, grayhi;
+
+ /* Do this using interval arithmetic, otherwise it is too difficult to
+ * handle the errors correctly.
+ *
+ * To handle the gamma correction work out the upper and lower bounds
+ * of the digitized value. Assume rounding here - normally the values
+ * will be identical after this operation if there is only one
+ * transform, feel free to delete the png_error checks on this below in
+ * the future (this is just me trying to ensure it works!)
+ */
+ r = rlo = rhi = that->redf;
+ rlo -= that->rede;
+ rlo = digitize(pm, rlo, sample_depth, 1/*round*/);
+ rhi += that->rede;
+ rhi = digitize(pm, rhi, sample_depth, 1/*round*/);
+
+ g = glo = ghi = that->greenf;
+ glo -= that->greene;
+ glo = digitize(pm, glo, sample_depth, 1/*round*/);
+ ghi += that->greene;
+ ghi = digitize(pm, ghi, sample_depth, 1/*round*/);
+
+ b = blo = bhi = that->bluef;
+ blo -= that->bluee;
+ blo = digitize(pm, blo, sample_depth, 1/*round*/);
+ bhi += that->greene;
+ bhi = digitize(pm, bhi, sample_depth, 1/*round*/);
+
+ isgray = r==g && g==b;
+
+ if (data.gamma != 1)
+ {
+ PNG_CONST double power = 1/data.gamma;
+ PNG_CONST double abse = abserr(pm, sample_depth, sample_depth);
+
+ /* 'abse' is the absolute error permitted in linear calculations. It
+ * is used here to capture the error permitted in the handling
+ * (undoing) of the gamma encoding. Once again digitization occurs
+ * to handle the upper and lower bounds of the values. This is
+ * where the real errors are introduced.
+ */
+ r = pow(r, power);
+ rlo = digitize(pm, pow(rlo, power)-abse, sample_depth, 1);
+ rhi = digitize(pm, pow(rhi, power)+abse, sample_depth, 1);
+
+ g = pow(g, power);
+ glo = digitize(pm, pow(glo, power)-abse, sample_depth, 1);
+ ghi = digitize(pm, pow(ghi, power)+abse, sample_depth, 1);
+
+ b = pow(b, power);
+ blo = digitize(pm, pow(blo, power)-abse, sample_depth, 1);
+ bhi = digitize(pm, pow(bhi, power)+abse, sample_depth, 1);
+ }
+
+ /* Now calculate the actual gray values. Although the error in the
+ * coefficients depends on whether they were specified on the command
+ * line (in which case truncation to 15 bits happened) or not (rounding
+ * was used) the maxium error in an individual coefficient is always
+ * 1/32768, because even in the rounding case the requirement that
+ * coefficients add up to 32768 can cause a larger rounding error.
+ *
+ * The only time when rounding doesn't occur in 1.5.5 and later is when
+ * the non-gamma code path is used for less than 16 bit data.
+ */
+ gray = r * data.red_coefficient + g * data.green_coefficient +
+ b * data.blue_coefficient;
+
+ {
+ PNG_CONST int do_round = data.gamma != 1 || sample_depth == 16;
+ PNG_CONST double ce = 1. / 32768;
+
+ graylo = digitize(pm, rlo * (data.red_coefficient-ce) +
+ glo * (data.green_coefficient-ce) +
+ blo * (data.blue_coefficient-ce), sample_depth, do_round);
+ if (graylo <= 0)
+ graylo = 0;
+
+ grayhi = digitize(pm, rhi * (data.red_coefficient+ce) +
+ ghi * (data.green_coefficient+ce) +
+ bhi * (data.blue_coefficient+ce), sample_depth, do_round);
+ if (grayhi >= 1)
+ grayhi = 1;
+ }
+
+ /* And invert the gamma. */
+ if (data.gamma != 1)
+ {
+ PNG_CONST double power = data.gamma;
+
+ gray = pow(gray, power);
+ graylo = digitize(pm, pow(graylo, power), sample_depth, 1);
+ grayhi = digitize(pm, pow(grayhi, power), sample_depth, 1);
+ }
+
+ /* Now the error can be calculated.
+ *
+ * If r==g==b because there is no overall gamma correction libpng
+ * currently preserves the original value.
+ */
+ if (isgray)
+ err = (that->rede + that->greene + that->bluee)/3;
+
+ else
+ {
+ err = fabs(grayhi-gray);
+ if (fabs(gray - graylo) > err)
+ err = fabs(graylo-gray);
+
+ /* Check that this worked: */
+ if (err > display->pm->limit)
+ {
+ size_t pos = 0;
+ char buffer[128];
+
+ pos = safecat(buffer, sizeof buffer, pos, "rgb_to_gray error ");
+ pos = safecatd(buffer, sizeof buffer, pos, err, 6);
+ pos = safecat(buffer, sizeof buffer, pos, " exceeds limit ");
+ pos = safecatd(buffer, sizeof buffer, pos,
+ display->pm->limit, 6);
+ png_error(pp, buffer);
+ }
+ }
+ }
+
+ that->bluef = that->greenf = that->redf = gray;
+ that->bluee = that->greene = that->rede = err;
+
+ /* The sBIT is the minium of the three colour channel sBITs. */
+ if (that->red_sBIT > that->green_sBIT)
+ that->red_sBIT = that->green_sBIT;
+ if (that->red_sBIT > that->blue_sBIT)
+ that->red_sBIT = that->blue_sBIT;
+ that->blue_sBIT = that->green_sBIT = that->red_sBIT;
+
+ /* And remove the colour bit in the type: */
+ if (that->colour_type == PNG_COLOR_TYPE_RGB)
+ that->colour_type = PNG_COLOR_TYPE_GRAY;
+ else if (that->colour_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ that->colour_type = PNG_COLOR_TYPE_GRAY_ALPHA;
+ }
+
+ this->next->mod(this->next, that, pp, display);
+}
+
+static int
+image_transform_png_set_rgb_to_gray_add(image_transform *this,
+ PNG_CONST image_transform **that, png_byte colour_type, png_byte bit_depth)
+{
+ UNUSED(bit_depth)
+
+ this->next = *that;
+ *that = this;
+
+ return (colour_type & PNG_COLOR_MASK_COLOR) != 0;
+}
+
+#undef data
+IT(rgb_to_gray);
+#undef PT
+#define PT ITSTRUCT(rgb_to_gray)
+#undef image_transform_ini
+#define image_transform_ini image_transform_default_ini
+#endif /* PNG_READ_RGB_TO_GRAY_SUPPORTED */
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+/* png_set_background(png_structp, png_const_color_16p background_color,
+ * int background_gamma_code, int need_expand, double background_gamma)
+ * png_set_background_fixed(png_structp, png_const_color_16p background_color,
+ * int background_gamma_code, int need_expand,
+ * png_fixed_point background_gamma)
+ *
+ * As with rgb_to_gray this ignores the gamma (at present.)
+*/
+#define data ITDATA(background)
+static image_pixel data;
+
+static void
+image_transform_png_set_background_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ png_byte colour_type, bit_depth;
+ png_byte random_bytes[8]; /* 8 bytes - 64 bits - the biggest pixel */
+ png_color_16 back;
+
+ /* We need a background colour, because we don't know exactly what transforms
+ * have been set we have to supply the colour in the original file format and
+ * so we need to know what that is! The background colour is stored in the
+ * transform_display.
+ */
+ RANDOMIZE(random_bytes);
+
+ /* Read the random value, for colour type 3 the background colour is actually
+ * expressed as a 24bit rgb, not an index.
+ */
+ colour_type = that->this.colour_type;
+ if (colour_type == 3)
+ {
+ colour_type = PNG_COLOR_TYPE_RGB;
+ bit_depth = 8;
+ }
+
+ else
+ bit_depth = that->this.bit_depth;
+
+ image_pixel_init(&data, random_bytes, colour_type,
+ bit_depth, 0/*x*/, 0/*unused: palette*/);
+
+ /* Extract the background colour from this image_pixel, but make sure the
+ * unused fields of 'back' are garbage.
+ */
+ RANDOMIZE(back);
+
+ if (colour_type & PNG_COLOR_MASK_COLOR)
+ {
+ back.red = (png_uint_16)data.red;
+ back.green = (png_uint_16)data.green;
+ back.blue = (png_uint_16)data.blue;
+ }
+
+ else
+ back.gray = (png_uint_16)data.red;
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_set_background(pp, &back, PNG_BACKGROUND_GAMMA_FILE, 1/*need expand*/,
+ 0);
+# else
+ png_set_background_fixed(pp, &back, PNG_BACKGROUND_GAMMA_FILE,
+ 1/*need expand*/, 0);
+# endif
+
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_background_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ /* Check for tRNS first: */
+ if (that->have_tRNS && that->colour_type != PNG_COLOR_TYPE_PALETTE)
+ image_pixel_add_alpha(that, &display->this);
+
+ /* This is only necessary if the alpha value is less than 1. */
+ if (that->alphaf < 1)
+ {
+ /* Now we do the background calculation without any gamma correction. */
+ if (that->alphaf <= 0)
+ {
+ that->redf = data.redf;
+ that->greenf = data.greenf;
+ that->bluef = data.bluef;
+
+ that->rede = data.rede;
+ that->greene = data.greene;
+ that->bluee = data.bluee;
+
+ that->red_sBIT= data.red_sBIT;
+ that->green_sBIT= data.green_sBIT;
+ that->blue_sBIT= data.blue_sBIT;
+ }
+
+ else /* 0 < alpha < 1 */
+ {
+ double alf = 1 - that->alphaf;
+
+ that->redf = that->redf * that->alphaf + data.redf * alf;
+ that->rede = that->rede * that->alphaf + data.rede * alf +
+ DBL_EPSILON;
+ that->greenf = that->greenf * that->alphaf + data.greenf * alf;
+ that->greene = that->greene * that->alphaf + data.greene * alf +
+ DBL_EPSILON;
+ that->bluef = that->bluef * that->alphaf + data.bluef * alf;
+ that->bluee = that->bluee * that->alphaf + data.bluee * alf +
+ DBL_EPSILON;
+ }
+
+ /* Remove the alpha type and set the alpha (not in that order.) */
+ that->alphaf = 1;
+ that->alphae = 0;
+
+ if (that->colour_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ that->colour_type = PNG_COLOR_TYPE_RGB;
+ else if (that->colour_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ that->colour_type = PNG_COLOR_TYPE_GRAY;
+ /* PNG_COLOR_TYPE_PALETTE is not changed */
+ }
+
+ this->next->mod(this->next, that, pp, display);
+}
+
+#define image_transform_png_set_background_add image_transform_default_add
+
+#undef data
+IT(background);
+#undef PT
+#define PT ITSTRUCT(background)
+#endif /* PNG_READ_BACKGROUND_SUPPORTED */
+
+/* This may just be 'end' if all the transforms are disabled! */
+static image_transform *PNG_CONST image_transform_first = &PT;
+
+static void
+transform_enable(PNG_CONST char *name)
+{
+ /* Everything starts out enabled, so if we see an 'enable' disabled
+ * everything else the first time round.
+ */
+ static int all_disabled = 0;
+ int found_it = 0;
+ image_transform *list = image_transform_first;
+
+ while (list != &image_transform_end)
+ {
+ if (strcmp(list->name, name) == 0)
+ {
+ list->enable = 1;
+ found_it = 1;
+ }
+ else if (!all_disabled)
+ list->enable = 0;
+
+ list = list->list;
+ }
+
+ all_disabled = 1;
+
+ if (!found_it)
+ {
+ fprintf(stderr, "pngvalid: --transform-enable=%s: unknown transform\n",
+ name);
+ exit(1);
+ }
+}
+
+static void
+transform_disable(PNG_CONST char *name)
+{
+ image_transform *list = image_transform_first;
+
+ while (list != &image_transform_end)
+ {
+ if (strcmp(list->name, name) == 0)
+ {
+ list->enable = 0;
+ return;
+ }
+
+ list = list->list;
+ }
+
+ fprintf(stderr, "pngvalid: --transform-disable=%s: unknown transform\n",
+ name);
+ exit(1);
+}
+
+static void
+image_transform_reset_count(void)
+{
+ image_transform *next = image_transform_first;
+ int count = 0;
+
+ while (next != &image_transform_end)
+ {
+ next->local_use = 0;
+ next->next = 0;
+ next = next->list;
+ ++count;
+ }
+
+ /* This can only happen if we every have more than 32 transforms (excluding
+ * the end) in the list.
+ */
+ if (count > 32) abort();
+}
+
+static int
+image_transform_test_counter(png_uint_32 counter, unsigned int max)
+{
+ /* Test the list to see if there is any point contining, given a current
+ * counter and a 'max' value.
+ */
+ image_transform *next = image_transform_first;
+
+ while (next != &image_transform_end)
+ {
+ /* For max 0 or 1 continue until the counter overflows: */
+ counter >>= 1;
+
+ /* Continue if any entry hasn't reacked the max. */
+ if (max > 1 && next->local_use < max)
+ return 1;
+ next = next->list;
+ }
+
+ return max <= 1 && counter == 0;
+}
+
+static png_uint_32
+image_transform_add(PNG_CONST image_transform **this, unsigned int max,
+ png_uint_32 counter, char *name, size_t sizeof_name, size_t *pos,
+ png_byte colour_type, png_byte bit_depth)
+{
+ for (;;) /* until we manage to add something */
+ {
+ png_uint_32 mask;
+ image_transform *list;
+
+ /* Find the next counter value, if the counter is zero this is the start
+ * of the list. This routine always returns the current counter (not the
+ * next) so it returns 0 at the end and expects 0 at the beginning.
+ */
+ if (counter == 0) /* first time */
+ {
+ image_transform_reset_count();
+ if (max <= 1)
+ counter = 1;
+ else
+ counter = random_32();
+ }
+ else /* advance the counter */
+ {
+ switch (max)
+ {
+ case 0: ++counter; break;
+ case 1: counter <<= 1; break;
+ default: counter = random_32(); break;
+ }
+ }
+
+ /* Now add all these items, if possible */
+ *this = &image_transform_end;
+ list = image_transform_first;
+ mask = 1;
+
+ /* Go through the whole list adding anything that the counter selects: */
+ while (list != &image_transform_end)
+ {
+ if ((counter & mask) != 0 && list->enable &&
+ (max == 0 || list->local_use < max))
+ {
+ /* Candidate to add: */
+ if (list->add(list, this, colour_type, bit_depth) || max == 0)
+ {
+ /* Added, so add to the name too. */
+ *pos = safecat(name, sizeof_name, *pos, " +");
+ *pos = safecat(name, sizeof_name, *pos, list->name);
+ }
+
+ else
+ {
+ /* Not useful and max>0, so remove it from *this: */
+ *this = list->next;
+ list->next = 0;
+
+ /* And, since we know it isn't useful, stop it being added again
+ * in this run:
+ */
+ list->local_use = max;
+ }
+ }
+
+ mask <<= 1;
+ list = list->list;
+ }
+
+ /* Now if anything was added we have something to do. */
+ if (*this != &image_transform_end)
+ return counter;
+
+ /* Nothing added, but was there anything in there to add? */
+ if (!image_transform_test_counter(counter, max))
+ return 0;
+ }
+}
+
+#ifdef THIS_IS_THE_PROFORMA
+static void
+image_transform_png_set_@_set(PNG_CONST image_transform *this,
+ transform_display *that, png_structp pp, png_infop pi)
+{
+ png_set_@(pp);
+ this->next->set(this->next, that, pp, pi);
+}
+
+static void
+image_transform_png_set_@_mod(PNG_CONST image_transform *this,
+ image_pixel *that, png_structp pp, PNG_CONST transform_display *display)
+{
+ this->next->mod(this->next, that, pp, display);
+}
+
+static int
+image_transform_png_set_@_add(image_transform *this,
+ PNG_CONST image_transform **that, char *name, size_t sizeof_name,
+ size_t *pos, png_byte colour_type, png_byte bit_depth)
+{
+ this->next = *that;
+ *that = this;
+
+ *pos = safecat(name, sizeof_name, *pos, " +@");
+
+ return 1;
+}
+
+IT(@);
+#endif
+
+/* png_set_quantize(png_structp, png_colorp palette, int num_palette,
+ * int maximum_colors, png_const_uint_16p histogram, int full_quantize)
+ *
+ * Very difficult to validate this!
+ */
+/*NOTE: TBD NYI */
+
+/* The data layout transforms are handled by swapping our own channel data,
+ * necessarily these need to happen at the end of the transform list because the
+ * semantic of the channels changes after these are executed. Some of these,
+ * like set_shift and set_packing, can't be done at present because they change
+ * the layout of the data at the sub-sample level so sample() won't get the
+ * right answer.
+ */
+/* png_set_invert_alpha */
+/*NOTE: TBD NYI */
+
+/* png_set_bgr */
+/*NOTE: TBD NYI */
+
+/* png_set_swap_alpha */
+/*NOTE: TBD NYI */
+
+/* png_set_swap */
+/*NOTE: TBD NYI */
+
+/* png_set_filler, (png_structp png_ptr, png_uint_32 filler, int flags)); */
+/*NOTE: TBD NYI */
+
+/* png_set_add_alpha, (png_structp png_ptr, png_uint_32 filler, int flags)); */
+/*NOTE: TBD NYI */
+
+/* png_set_packing */
+/*NOTE: TBD NYI */
+
+/* png_set_packswap */
+/*NOTE: TBD NYI */
+
+/* png_set_invert_mono */
+/*NOTE: TBD NYI */
+
+/* png_set_shift(png_structp, png_const_color_8p true_bits) */
+/*NOTE: TBD NYI */
+
+static void
+perform_transform_test(png_modifier *pm)
+{
+ png_byte colour_type = 0;
+ png_byte bit_depth = 0;
+ int palette_number = 0;
+
+ while (next_format(&colour_type, &bit_depth, &palette_number))
+ {
+ png_uint_32 counter = 0;
+ size_t base_pos;
+ char name[64];
+
+ base_pos = safecat(name, sizeof name, 0, "transform:");
+
+ for (;;)
+ {
+ size_t pos = base_pos;
+ PNG_CONST image_transform *list = 0;
+
+ /* 'max' is currently hardwired to '1'; this should be settable on the
+ * command line.
+ */
+ counter = image_transform_add(&list, 1/*max*/, counter,
+ name, sizeof name, &pos, colour_type, bit_depth);
+
+ if (counter == 0)
+ break;
+
+ /* The command line can change this to checking interlaced images. */
+ do
+ {
+ pm->repeat = 0;
+ transform_test(pm, FILEID(colour_type, bit_depth, palette_number,
+ pm->interlace_type, 0, 0, 0), list, name);
+
+ if (fail(pm))
+ return;
+ }
+ while (pm->repeat);
+ }
+ }
+}
+#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
+
+/********************************* GAMMA TESTS ********************************/
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* Reader callbacks and implementations, where they differ from the standard
+ * ones.
+ */
+typedef struct gamma_display
+{
+ standard_display this;
+
+ /* Parameters */
+ png_modifier* pm;
+ double file_gamma;
+ double screen_gamma;
+ double background_gamma;
+ png_byte sbit;
+ int threshold_test;
+ int use_input_precision;
+ int scale16;
+ int expand16;
+ int do_background;
+ png_color_16 background_color;
+
+ /* Local variables */
+ double maxerrout;
+ double maxerrpc;
+ double maxerrabs;
+} gamma_display;
+
+#define ALPHA_MODE_OFFSET 4
+
+static void
+gamma_display_init(gamma_display *dp, png_modifier *pm, png_uint_32 id,
+ double file_gamma, double screen_gamma, png_byte sbit, int threshold_test,
+ int use_input_precision, int scale16, int expand16,
+ int do_background, PNG_CONST png_color_16 *pointer_to_the_background_color,
+ double background_gamma)
+{
+ /* Standard fields */
+ standard_display_init(&dp->this, &pm->this, id, 0/*do_interlace*/,
+ pm->use_update_info);
+
+ /* Parameter fields */
+ dp->pm = pm;
+ dp->file_gamma = file_gamma;
+ dp->screen_gamma = screen_gamma;
+ dp->background_gamma = background_gamma;
+ dp->sbit = sbit;
+ dp->threshold_test = threshold_test;
+ dp->use_input_precision = use_input_precision;
+ dp->scale16 = scale16;
+ dp->expand16 = expand16;
+ dp->do_background = do_background;
+ if (do_background && pointer_to_the_background_color != 0)
+ dp->background_color = *pointer_to_the_background_color;
+ else
+ memset(&dp->background_color, 0, sizeof dp->background_color);
+
+ /* Local variable fields */
+ dp->maxerrout = dp->maxerrpc = dp->maxerrabs = 0;
+}
+
+static void
+gamma_info_imp(gamma_display *dp, png_structp pp, png_infop pi)
+{
+ /* Reuse the standard stuff as appropriate. */
+ standard_info_part1(&dp->this, pp, pi);
+
+ /* If requested strip 16 to 8 bits - this is handled automagically below
+ * because the output bit depth is read from the library. Note that there
+ * are interactions with sBIT but, internally, libpng makes sbit at most
+ * PNG_MAX_GAMMA_8 when doing the following.
+ */
+ if (dp->scale16)
+# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ png_set_scale_16(pp);
+# else
+ /* The following works both in 1.5.4 and earlier versions: */
+# ifdef PNG_READ_16_TO_8_SUPPORTED
+ png_set_strip_16(pp);
+# else
+ png_error(pp, "scale16 (16 to 8 bit conversion) not supported");
+# endif
+# endif
+
+ if (dp->expand16)
+# ifdef PNG_READ_EXPAND_16_SUPPORTED
+ png_set_expand_16(pp);
+# else
+ png_error(pp, "expand16 (8 to 16 bit conversion) not supported");
+# endif
+
+ if (dp->do_background >= ALPHA_MODE_OFFSET)
+ {
+# ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ {
+ /* This tests the alpha mode handling, if supported. */
+ int mode = dp->do_background - ALPHA_MODE_OFFSET;
+
+ /* The gamma value is the output gamma, and is in the standard,
+ * non-inverted, represenation. It provides a default for the PNG file
+ * gamma, but since the file has a gAMA chunk this does not matter.
+ */
+ PNG_CONST double sg = dp->screen_gamma;
+# ifndef PNG_FLOATING_POINT_SUPPORTED
+ PNG_CONST png_fixed_point g = fix(sg);
+# endif
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_set_alpha_mode(pp, mode, sg);
+# else
+ png_set_alpha_mode_fixed(pp, mode, g);
+# endif
+
+ /* However, for the standard Porter-Duff algorithm the output defaults
+ * to be linear, so if the test requires non-linear output it must be
+ * corrected here.
+ */
+ if (mode == PNG_ALPHA_STANDARD && sg != 1)
+ {
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_set_gamma(pp, sg, dp->file_gamma);
+# else
+ png_fixed_point f = fix(dp->file_gamma);
+ png_set_gamma_fixed(pp, g, f);
+# endif
+ }
+ }
+# else
+ png_error(pp, "alpha mode handling not supported");
+# endif
+ }
+
+ else
+ {
+ /* Set up gamma processing. */
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_set_gamma(pp, dp->screen_gamma, dp->file_gamma);
+# else
+ {
+ png_fixed_point s = fix(dp->screen_gamma);
+ png_fixed_point f = fix(dp->file_gamma);
+ png_set_gamma_fixed(pp, s, f);
+ }
+# endif
+
+ if (dp->do_background)
+ {
+# ifdef PNG_READ_BACKGROUND_SUPPORTED
+ /* NOTE: this assumes the caller provided the correct background gamma!
+ */
+ PNG_CONST double bg = dp->background_gamma;
+# ifndef PNG_FLOATING_POINT_SUPPORTED
+ PNG_CONST png_fixed_point g = fix(bg);
+# endif
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_set_background(pp, &dp->background_color, dp->do_background,
+ 0/*need_expand*/, bg);
+# else
+ png_set_background_fixed(pp, &dp->background_color,
+ dp->do_background, 0/*need_expand*/, g);
+# endif
+# else
+ png_error(pp, "png_set_background not supported");
+# endif
+ }
+ }
+
+ {
+ int i = dp->this.use_update_info;
+ /* Always do one call, even if use_update_info is 0. */
+ do
+ png_read_update_info(pp, pi);
+ while (--i > 0);
+ }
+
+ /* Now we may get a different cbRow: */
+ standard_info_part2(&dp->this, pp, pi, 1 /*images*/);
+}
+
+static void
+gamma_info(png_structp pp, png_infop pi)
+{
+ gamma_info_imp(voidcast(gamma_display*, png_get_progressive_ptr(pp)), pp,
+ pi);
+}
+
+/* Validate a single component value - the routine gets the input and output
+ * sample values as unscaled PNG component values along with a cache of all the
+ * information required to validate the values.
+ */
+typedef struct validate_info
+{
+ png_structp pp;
+ gamma_display *dp;
+ png_byte sbit;
+ int use_input_precision;
+ int do_background;
+ int scale16;
+ unsigned int sbit_max;
+ unsigned int isbit_shift;
+ unsigned int outmax;
+
+ double gamma_correction; /* Overall correction required. */
+ double file_inverse; /* Inverse of file gamma. */
+ double screen_gamma;
+ double screen_inverse; /* Inverse of screen gamma. */
+
+ double background_red; /* Linear background value, red or gray. */
+ double background_green;
+ double background_blue;
+
+ double maxabs;
+ double maxpc;
+ double maxcalc;
+ double maxout;
+ double maxout_total; /* Total including quantization error */
+ double outlog;
+ int outquant;
+}
+validate_info;
+
+static void
+init_validate_info(validate_info *vi, gamma_display *dp, png_struct *pp,
+ int in_depth, int out_depth)
+{
+ PNG_CONST unsigned int outmax = (1U<<out_depth)-1;
+
+ vi->pp = pp;
+ vi->dp = dp;
+
+ if (dp->sbit > 0 && dp->sbit < in_depth)
+ {
+ vi->sbit = dp->sbit;
+ vi->isbit_shift = in_depth - dp->sbit;
+ }
+
+ else
+ {
+ vi->sbit = (png_byte)in_depth;
+ vi->isbit_shift = 0;
+ }
+
+ vi->sbit_max = (1U << vi->sbit)-1;
+
+ /* This mimics the libpng threshold test, '0' is used to prevent gamma
+ * correction in the validation test.
+ */
+ vi->screen_gamma = dp->screen_gamma;
+ if (fabs(vi->screen_gamma-1) < PNG_GAMMA_THRESHOLD)
+ vi->screen_gamma = vi->screen_inverse = 0;
+ else
+ vi->screen_inverse = 1/vi->screen_gamma;
+
+ vi->use_input_precision = dp->use_input_precision;
+ vi->outmax = outmax;
+ vi->maxabs = abserr(dp->pm, in_depth, out_depth);
+ vi->maxpc = pcerr(dp->pm, in_depth, out_depth);
+ vi->maxcalc = calcerr(dp->pm, in_depth, out_depth);
+ vi->maxout = outerr(dp->pm, in_depth, out_depth);
+ vi->outquant = output_quantization_factor(dp->pm, in_depth, out_depth);
+ vi->maxout_total = vi->maxout + vi->outquant * .5;
+ vi->outlog = outlog(dp->pm, in_depth, out_depth);
+
+ if ((dp->this.colour_type & PNG_COLOR_MASK_ALPHA) != 0 ||
+ (dp->this.colour_type == 3 && dp->this.is_transparent))
+ {
+ vi->do_background = dp->do_background;
+
+ if (vi->do_background != 0)
+ {
+ PNG_CONST double bg_inverse = 1/dp->background_gamma;
+ double r, g, b;
+
+ /* Caller must at least put the gray value into the red channel */
+ r = dp->background_color.red; r /= outmax;
+ g = dp->background_color.green; g /= outmax;
+ b = dp->background_color.blue; b /= outmax;
+
+# if 0
+ /* libpng doesn't do this optimization, if we do pngvalid will fail.
+ */
+ if (fabs(bg_inverse-1) >= PNG_GAMMA_THRESHOLD)
+# endif
+ {
+ r = pow(r, bg_inverse);
+ g = pow(g, bg_inverse);
+ b = pow(b, bg_inverse);
+ }
+
+ vi->background_red = r;
+ vi->background_green = g;
+ vi->background_blue = b;
+ }
+ }
+ else
+ vi->do_background = 0;
+
+ if (vi->do_background == 0)
+ vi->background_red = vi->background_green = vi->background_blue = 0;
+
+ vi->gamma_correction = 1/(dp->file_gamma*dp->screen_gamma);
+ if (fabs(vi->gamma_correction-1) < PNG_GAMMA_THRESHOLD)
+ vi->gamma_correction = 0;
+
+ vi->file_inverse = 1/dp->file_gamma;
+ if (fabs(vi->file_inverse-1) < PNG_GAMMA_THRESHOLD)
+ vi->file_inverse = 0;
+
+ vi->scale16 = dp->scale16;
+}
+
+/* This function handles composition of a single non-alpha component. The
+ * argument is the input sample value, in the range 0..1, and the alpha value.
+ * The result is the composed, linear, input sample. If alpha is less than zero
+ * this is the alpha component and the function should not be called!
+ */
+static double
+gamma_component_compose(int do_background, double input_sample, double alpha,
+ double background, int *compose)
+{
+ switch (do_background)
+ {
+ case PNG_BACKGROUND_GAMMA_SCREEN:
+ case PNG_BACKGROUND_GAMMA_FILE:
+ case PNG_BACKGROUND_GAMMA_UNIQUE:
+ /* Standard PNG background processing. */
+ if (alpha < 1)
+ {
+ if (alpha > 0)
+ {
+ input_sample = input_sample * alpha + background * (1-alpha);
+ if (compose != NULL)
+ *compose = 1;
+ }
+
+ else
+ input_sample = background;
+ }
+ break;
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ case ALPHA_MODE_OFFSET + PNG_ALPHA_STANDARD:
+ case ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN:
+ /* The components are premultiplied in either case and the output is
+ * gamma encoded (to get standard Porter-Duff we expect the output
+ * gamma to be set to 1.0!)
+ */
+ case ALPHA_MODE_OFFSET + PNG_ALPHA_OPTIMIZED:
+ /* The optimization is that the partial-alpha entries are linear
+ * while the opaque pixels are gamma encoded, but this only affects the
+ * output encoding.
+ */
+ if (alpha < 1)
+ {
+ if (alpha > 0)
+ {
+ input_sample *= alpha;
+ if (compose != NULL)
+ *compose = 1;
+ }
+
+ else
+ input_sample = 0;
+ }
+ break;
+#endif
+
+ default:
+ /* Standard cases where no compositing is done (so the component
+ * value is already correct.)
+ */
+ break;
+ }
+
+ return input_sample;
+}
+
+/* This API returns the encoded *input* component, in the range 0..1 */
+static double
+gamma_component_validate(PNG_CONST char *name, PNG_CONST validate_info *vi,
+ PNG_CONST unsigned int id, PNG_CONST unsigned int od,
+ PNG_CONST double alpha /* <0 for the alpha channel itself */,
+ PNG_CONST double background /* component background value */)
+{
+ PNG_CONST unsigned int isbit = id >> vi->isbit_shift;
+ PNG_CONST unsigned int sbit_max = vi->sbit_max;
+ PNG_CONST unsigned int outmax = vi->outmax;
+ PNG_CONST int do_background = vi->do_background;
+
+ double i;
+
+ /* First check on the 'perfect' result obtained from the digitized input
+ * value, id, and compare this against the actual digitized result, 'od'.
+ * 'i' is the input result in the range 0..1:
+ */
+ i = isbit; i /= sbit_max;
+
+ /* Check for the fast route: if we don't do any background composition or if
+ * this is the alpha channel ('alpha' < 0) or if the pixel is opaque then
+ * just use the gamma_correction field to correct to the final output gamma.
+ */
+ if (alpha == 1 /* opaque pixel component */ || !do_background
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ || do_background == ALPHA_MODE_OFFSET + PNG_ALPHA_PNG
+#endif
+ || (alpha < 0 /* alpha channel */
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ && do_background != ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN
+#endif
+ ))
+ {
+ /* Then get the gamma corrected version of 'i' and compare to 'od', any
+ * error less than .5 is insignificant - just quantization of the output
+ * value to the nearest digital value (nevertheless the error is still
+ * recorded - it's interesting ;-)
+ */
+ double encoded_sample = i;
+ double encoded_error;
+
+ /* alpha less than 0 indicates the alpha channel, which is always linear
+ */
+ if (alpha >= 0 && vi->gamma_correction > 0)
+ encoded_sample = pow(encoded_sample, vi->gamma_correction);
+ encoded_sample *= outmax;
+
+ encoded_error = fabs(od-encoded_sample);
+
+ if (encoded_error > vi->dp->maxerrout)
+ vi->dp->maxerrout = encoded_error;
+
+ if (encoded_error < vi->maxout_total && encoded_error < vi->outlog)
+ return i;
+ }
+
+ /* The slow route - attempt to do linear calculations. */
+ /* There may be an error, or background processing is required, so calculate
+ * the actual sample values - unencoded light intensity values. Note that in
+ * practice these are not completely unencoded because they include a
+ * 'viewing correction' to decrease or (normally) increase the perceptual
+ * contrast of the image. There's nothing we can do about this - we don't
+ * know what it is - so assume the unencoded value is perceptually linear.
+ */
+ {
+ double input_sample = i; /* In range 0..1 */
+ double output, error, encoded_sample, encoded_error;
+ double es_lo, es_hi;
+ int compose = 0; /* Set to one if composition done */
+ int output_is_encoded; /* Set if encoded to screen gamma */
+ int log_max_error = 1; /* Check maximum error values */
+ png_const_charp pass = 0; /* Reason test passes (or 0 for fail) */
+
+ /* Convert to linear light (with the above caveat.) The alpha channel is
+ * already linear.
+ */
+ if (alpha >= 0)
+ {
+ int tcompose;
+
+ if (vi->file_inverse > 0)
+ input_sample = pow(input_sample, vi->file_inverse);
+
+ /* Handle the compose processing: */
+ tcompose = 0;
+ input_sample = gamma_component_compose(do_background, input_sample,
+ alpha, background, &tcompose);
+
+ if (tcompose)
+ compose = 1;
+ }
+
+ /* And similarly for the output value, but we need to check the background
+ * handling to linearize it correctly.
+ */
+ output = od;
+ output /= outmax;
+
+ output_is_encoded = vi->screen_gamma > 0;
+
+ if (alpha < 0) /* The alpha channel */
+ {
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ if (do_background != ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN)
+#endif
+ {
+ /* In all other cases the output alpha channel is linear already,
+ * don't log errors here, they are much larger in linear data.
+ */
+ output_is_encoded = 0;
+ log_max_error = 0;
+ }
+ }
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ else /* A component */
+ {
+ if (do_background == ALPHA_MODE_OFFSET + PNG_ALPHA_OPTIMIZED &&
+ alpha < 1) /* the optimized case - linear output */
+ {
+ if (alpha > 0) log_max_error = 0;
+ output_is_encoded = 0;
+ }
+ }
+#endif
+
+ if (output_is_encoded)
+ output = pow(output, vi->screen_gamma);
+
+ /* Calculate (or recalculate) the encoded_sample value and repeat the
+ * check above (unnecessary if we took the fast route, but harmless.)
+ */
+ encoded_sample = input_sample;
+ if (output_is_encoded)
+ encoded_sample = pow(encoded_sample, vi->screen_inverse);
+ encoded_sample *= outmax;
+
+ encoded_error = fabs(od-encoded_sample);
+
+ /* Don't log errors in the alpha channel, or the 'optimized' case,
+ * neither are significant to the overall perception.
+ */
+ if (log_max_error && encoded_error > vi->dp->maxerrout)
+ vi->dp->maxerrout = encoded_error;
+
+ if (encoded_error < vi->maxout_total)
+ {
+ if (encoded_error < vi->outlog)
+ return i;
+
+ /* Test passed but error is bigger than the log limit, record why the
+ * test passed:
+ */
+ pass = "less than maxout:\n";
+ }
+
+ /* i: the original input value in the range 0..1
+ *
+ * pngvalid calculations:
+ * input_sample: linear result; i linearized and composed, range 0..1
+ * encoded_sample: encoded result; input_sample scaled to ouput bit depth
+ *
+ * libpng calculations:
+ * output: linear result; od scaled to 0..1 and linearized
+ * od: encoded result from libpng
+ */
+
+ /* Now we have the numbers for real errors, both absolute values as as a
+ * percentage of the correct value (output):
+ */
+ error = fabs(input_sample-output);
+
+ if (log_max_error && error > vi->dp->maxerrabs)
+ vi->dp->maxerrabs = error;
+
+ /* The following is an attempt to ignore the tendency of quantization to
+ * dominate the percentage errors for lower result values:
+ */
+ if (log_max_error && input_sample > .5)
+ {
+ double percentage_error = error/input_sample;
+ if (percentage_error > vi->dp->maxerrpc)
+ vi->dp->maxerrpc = percentage_error;
+ }
+
+ /* Now calculate the digitization limits for 'encoded_sample' using the
+ * 'max' values. Note that maxout is in the encoded space but maxpc and
+ * maxabs are in linear light space.
+ *
+ * First find the maximum error in linear light space, range 0..1:
+ */
+ {
+ double tmp = input_sample * vi->maxpc;
+ if (tmp < vi->maxabs) tmp = vi->maxabs;
+ /* If 'compose' is true the composition was done in linear space using
+ * integer arithmetic. This introduces an extra error of +/- 0.5 (at
+ * least) in the integer space used. 'maxcalc' records this, taking
+ * into account the possibility that even for 16 bit output 8 bit space
+ * may have been used.
+ */
+ if (compose && tmp < vi->maxcalc) tmp = vi->maxcalc;
+
+ /* The 'maxout' value refers to the encoded result, to compare with
+ * this encode input_sample adjusted by the maximum error (tmp) above.
+ */
+ es_lo = encoded_sample - vi->maxout;
+
+ if (es_lo > 0 && input_sample-tmp > 0)
+ {
+ double low_value = input_sample-tmp;
+ if (output_is_encoded)
+ low_value = pow(low_value, vi->screen_inverse);
+ low_value *= outmax;
+ if (low_value < es_lo) es_lo = low_value;
+
+ /* Quantize this appropriately: */
+ es_lo = ceil(es_lo / vi->outquant - .5) * vi->outquant;
+ }
+
+ else
+ es_lo = 0;
+
+ es_hi = encoded_sample + vi->maxout;
+
+ if (es_hi < outmax && input_sample+tmp < 1)
+ {
+ double high_value = input_sample+tmp;
+ if (output_is_encoded)
+ high_value = pow(high_value, vi->screen_inverse);
+ high_value *= outmax;
+ if (high_value > es_hi) es_hi = high_value;
+
+ es_hi = floor(es_hi / vi->outquant + .5) * vi->outquant;
+ }
+
+ else
+ es_hi = outmax;
+ }
+
+ /* The primary test is that the final encoded value returned by the
+ * library should be between the two limits (inclusive) that were
+ * calculated above.
+ */
+ if (od >= es_lo && od <= es_hi)
+ {
+ /* The value passes, but we may need to log the information anyway. */
+ if (encoded_error < vi->outlog)
+ return i;
+
+ if (pass == 0)
+ pass = "within digitization limits:\n";
+ }
+
+ {
+ /* There has been an error in processing, or we need to log this
+ * value.
+ */
+ double is_lo, is_hi;
+
+ /* pass is set at this point if either of the tests above would have
+ * passed. Don't do these additional tests here - just log the
+ * original [es_lo..es_hi] values.
+ */
+ if (pass == 0 && vi->use_input_precision)
+ {
+ /* Ok, something is wrong - this actually happens in current libpng
+ * 16-to-8 processing. Assume that the input value (id, adjusted
+ * for sbit) can be anywhere between value-.5 and value+.5 - quite a
+ * large range if sbit is low.
+ */
+ double tmp = (isbit - .5)/sbit_max;
+
+ if (tmp <= 0)
+ tmp = 0;
+
+ else if (alpha >= 0 && vi->file_inverse > 0 && tmp < 1)
+ tmp = pow(tmp, vi->file_inverse);
+
+ tmp = gamma_component_compose(do_background, tmp, alpha, background,
+ NULL);
+
+ if (output_is_encoded && tmp > 0 && tmp < 1)
+ tmp = pow(tmp, vi->screen_inverse);
+
+ is_lo = ceil(outmax * tmp - vi->maxout_total);
+
+ if (is_lo < 0)
+ is_lo = 0;
+
+ tmp = (isbit + .5)/sbit_max;
+
+ if (tmp <= 0)
+ tmp = 0;
+
+ else if (alpha >= 0 && vi->file_inverse > 0 && tmp < 1)
+ tmp = pow(tmp, vi->file_inverse);
+
+ tmp = gamma_component_compose(do_background, tmp, alpha, background,
+ NULL);
+
+ if (output_is_encoded && tmp > 0 && tmp < 1)
+ tmp = pow(tmp, vi->screen_inverse);
+
+ is_hi = floor(outmax * tmp + vi->maxout_total);
+
+ if (is_hi > outmax)
+ is_hi = outmax;
+
+ if (!(od < is_lo || od > is_hi))
+ {
+ if (encoded_error < vi->outlog)
+ return i;
+
+ pass = "within input precision limits:\n";
+ }
+
+ /* One last chance. If this is an alpha channel and the 16to8
+ * option has been used and 'inaccurate' scaling is used then the
+ * bit reduction is obtained by simply using the top 8 bits of the
+ * value.
+ *
+ * This is only done for older libpng versions when the 'inaccurate'
+ * (chop) method of scaling was used.
+ */
+# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+# if PNG_LIBPNG_VER < 10504
+ /* This may be required for other components in the future,
+ * but at present the presence of gamma correction effectively
+ * prevents the errors in the component scaling (I don't quite
+ * understand why, but since it's better this way I care not
+ * to ask, JB 20110419.)
+ */
+ if (pass == 0 && alpha < 0 && vi->scale16 && vi->sbit > 8 &&
+ vi->sbit + vi->isbit_shift == 16)
+ {
+ tmp = ((id >> 8) - .5)/255;
+
+ if (tmp > 0)
+ {
+ is_lo = ceil(outmax * tmp - vi->maxout_total);
+ if (is_lo < 0) is_lo = 0;
+ }
+
+ else
+ is_lo = 0;
+
+ tmp = ((id >> 8) + .5)/255;
+
+ if (tmp < 1)
+ {
+ is_hi = floor(outmax * tmp + vi->maxout_total);
+ if (is_hi > outmax) is_hi = outmax;
+ }
+
+ else
+ is_hi = outmax;
+
+ if (!(od < is_lo || od > is_hi))
+ {
+ if (encoded_error < vi->outlog)
+ return i;
+
+ pass = "within 8 bit limits:\n";
+ }
+ }
+# endif
+# endif
+ }
+ else /* !use_input_precision */
+ is_lo = es_lo, is_hi = es_hi;
+
+ /* Attempt to output a meaningful error/warning message: the message
+ * output depends on the background/composite operation being performed
+ * because this changes what parameters were actually used above.
+ */
+ {
+ size_t pos = 0;
+ /* Need either 1/255 or 1/65535 precision here; 3 or 6 decimal
+ * places. Just use outmax to work out which.
+ */
+ int precision = (outmax >= 1000 ? 6 : 3);
+ int use_input=1, use_background=0, do_compose=0;
+ char msg[256];
+
+ if (pass != 0)
+ pos = safecat(msg, sizeof msg, pos, "\n\t");
+
+ /* Set up the various flags, the output_is_encoded flag above
+ * is also used below. do_compose is just a double check.
+ */
+ switch (do_background)
+ {
+ case PNG_BACKGROUND_GAMMA_SCREEN:
+ case PNG_BACKGROUND_GAMMA_FILE:
+ case PNG_BACKGROUND_GAMMA_UNIQUE:
+ use_background = (alpha >= 0 && alpha < 1);
+ /*FALL THROUGH*/
+# ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ case ALPHA_MODE_OFFSET + PNG_ALPHA_STANDARD:
+ case ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN:
+ case ALPHA_MODE_OFFSET + PNG_ALPHA_OPTIMIZED:
+# endif /* ALPHA_MODE_SUPPORTED */
+ do_compose = (alpha > 0 && alpha < 1);
+ use_input = (alpha != 0);
+ break;
+
+ default:
+ break;
+ }
+
+ /* Check the 'compose' flag */
+ if (compose != do_compose)
+ png_error(vi->pp, "internal error (compose)");
+
+ /* 'name' is the component name */
+ pos = safecat(msg, sizeof msg, pos, name);
+ pos = safecat(msg, sizeof msg, pos, "(");
+ pos = safecatn(msg, sizeof msg, pos, id);
+ if (use_input || pass != 0/*logging*/)
+ {
+ if (isbit != id)
+ {
+ /* sBIT has reduced the precision of the input: */
+ pos = safecat(msg, sizeof msg, pos, ", sbit(");
+ pos = safecatn(msg, sizeof msg, pos, vi->sbit);
+ pos = safecat(msg, sizeof msg, pos, "): ");
+ pos = safecatn(msg, sizeof msg, pos, isbit);
+ }
+ pos = safecat(msg, sizeof msg, pos, "/");
+ /* The output is either "id/max" or "id sbit(sbit): isbit/max" */
+ pos = safecatn(msg, sizeof msg, pos, vi->sbit_max);
+ }
+ pos = safecat(msg, sizeof msg, pos, ")");
+
+ /* A component may have been multiplied (in linear space) by the
+ * alpha value, 'compose' says whether this is relevant.
+ */
+ if (compose || pass != 0)
+ {
+ /* If any form of composition is being done report our
+ * calculated linear value here (the code above doesn't record
+ * the input value before composition is performed, so what
+ * gets reported is the value after composition.)
+ */
+ if (use_input || pass != 0)
+ {
+ if (vi->file_inverse > 0)
+ {
+ pos = safecat(msg, sizeof msg, pos, "^");
+ pos = safecatd(msg, sizeof msg, pos, vi->file_inverse, 2);
+ }
+
+ else
+ pos = safecat(msg, sizeof msg, pos, "[linear]");
+
+ pos = safecat(msg, sizeof msg, pos, "*(alpha)");
+ pos = safecatd(msg, sizeof msg, pos, alpha, precision);
+ }
+
+ /* Now record the *linear* background value if it was used
+ * (this function is not passed the original, non-linear,
+ * value but it is contained in the test name.)
+ */
+ if (use_background)
+ {
+ pos = safecat(msg, sizeof msg, pos, use_input ? "+" : " ");
+ pos = safecat(msg, sizeof msg, pos, "(background)");
+ pos = safecatd(msg, sizeof msg, pos, background, precision);
+ pos = safecat(msg, sizeof msg, pos, "*");
+ pos = safecatd(msg, sizeof msg, pos, 1-alpha, precision);
+ }
+ }
+
+ /* Report the calculated value (input_sample) and the linearized
+ * libpng value (output) unless this is just a component gamma
+ * correction.
+ */
+ if (compose || alpha < 0 || pass != 0)
+ {
+ pos = safecat(msg, sizeof msg, pos,
+ pass != 0 ? " =\n\t" : " = ");
+ pos = safecatd(msg, sizeof msg, pos, input_sample, precision);
+ pos = safecat(msg, sizeof msg, pos, " (libpng: ");
+ pos = safecatd(msg, sizeof msg, pos, output, precision);
+ pos = safecat(msg, sizeof msg, pos, ")");
+
+ /* Finally report the output gamma encoding, if any. */
+ if (output_is_encoded)
+ {
+ pos = safecat(msg, sizeof msg, pos, " ^");
+ pos = safecatd(msg, sizeof msg, pos, vi->screen_inverse, 2);
+ pos = safecat(msg, sizeof msg, pos, "(to screen) =");
+ }
+
+ else
+ pos = safecat(msg, sizeof msg, pos, " [screen is linear] =");
+ }
+
+ if ((!compose && alpha >= 0) || pass != 0)
+ {
+ if (pass != 0) /* logging */
+ pos = safecat(msg, sizeof msg, pos, "\n\t[overall:");
+
+ /* This is the non-composition case, the internal linear
+ * values are irrelevant (though the log below will reveal
+ * them.) Output a much shorter warning/error message and report
+ * the overall gamma correction.
+ */
+ if (vi->gamma_correction > 0)
+ {
+ pos = safecat(msg, sizeof msg, pos, " ^");
+ pos = safecatd(msg, sizeof msg, pos, vi->gamma_correction, 2);
+ pos = safecat(msg, sizeof msg, pos, "(gamma correction) =");
+ }
+
+ else
+ pos = safecat(msg, sizeof msg, pos,
+ " [no gamma correction] =");
+
+ if (pass != 0)
+ pos = safecat(msg, sizeof msg, pos, "]");
+ }
+
+ /* This is our calculated encoded_sample which should (but does
+ * not) match od:
+ */
+ pos = safecat(msg, sizeof msg, pos, pass != 0 ? "\n\t" : " ");
+ pos = safecatd(msg, sizeof msg, pos, is_lo, 1);
+ pos = safecat(msg, sizeof msg, pos, " < ");
+ pos = safecatd(msg, sizeof msg, pos, encoded_sample, 1);
+ pos = safecat(msg, sizeof msg, pos, " (libpng: ");
+ pos = safecatn(msg, sizeof msg, pos, od);
+ pos = safecat(msg, sizeof msg, pos, ")");
+ pos = safecat(msg, sizeof msg, pos, "/");
+ pos = safecatn(msg, sizeof msg, pos, outmax);
+ pos = safecat(msg, sizeof msg, pos, " < ");
+ pos = safecatd(msg, sizeof msg, pos, is_hi, 1);
+
+ if (pass == 0) /* The error condition */
+ {
+# ifdef PNG_WARNINGS_SUPPORTED
+ png_warning(vi->pp, msg);
+# else
+ store_warning(vi->pp, msg);
+# endif
+ }
+
+ else /* logging this value */
+ store_verbose(&vi->dp->pm->this, vi->pp, pass, msg);
+ }
+ }
+ }
+
+ return i;
+}
+
+static void
+gamma_image_validate(gamma_display *dp, png_structp pp, png_infop pi)
+{
+ /* Get some constants derived from the input and output file formats: */
+ PNG_CONST png_store* PNG_CONST ps = dp->this.ps;
+ PNG_CONST png_byte in_ct = dp->this.colour_type;
+ PNG_CONST png_byte in_bd = dp->this.bit_depth;
+ PNG_CONST png_uint_32 w = dp->this.w;
+ PNG_CONST png_uint_32 h = dp->this.h;
+ PNG_CONST size_t cbRow = dp->this.cbRow;
+ PNG_CONST png_byte out_ct = png_get_color_type(pp, pi);
+ PNG_CONST png_byte out_bd = png_get_bit_depth(pp, pi);
+
+ /* There are three sources of error, firstly the quantization in the
+ * file encoding, determined by sbit and/or the file depth, secondly
+ * the output (screen) gamma and thirdly the output file encoding.
+ *
+ * Since this API receives the screen and file gamma in double
+ * precision it is possible to calculate an exact answer given an input
+ * pixel value. Therefore we assume that the *input* value is exact -
+ * sample/maxsample - calculate the corresponding gamma corrected
+ * output to the limits of double precision arithmetic and compare with
+ * what libpng returns.
+ *
+ * Since the library must quantize the output to 8 or 16 bits there is
+ * a fundamental limit on the accuracy of the output of +/-.5 - this
+ * quantization limit is included in addition to the other limits
+ * specified by the paramaters to the API. (Effectively, add .5
+ * everywhere.)
+ *
+ * The behavior of the 'sbit' paramter is defined by section 12.5
+ * (sample depth scaling) of the PNG spec. That section forces the
+ * decoder to assume that the PNG values have been scaled if sBIT is
+ * present:
+ *
+ * png-sample = floor( input-sample * (max-out/max-in) + .5);
+ *
+ * This means that only a subset of the possible PNG values should
+ * appear in the input. However, the spec allows the encoder to use a
+ * variety of approximations to the above and doesn't require any
+ * restriction of the values produced.
+ *
+ * Nevertheless the spec requires that the upper 'sBIT' bits of the
+ * value stored in a PNG file be the original sample bits.
+ * Consequently the code below simply scales the top sbit bits by
+ * (1<<sbit)-1 to obtain an original sample value.
+ *
+ * Because there is limited precision in the input it is arguable that
+ * an acceptable result is any valid result from input-.5 to input+.5.
+ * The basic tests below do not do this, however if 'use_input_precision'
+ * is set a subsequent test is performed below.
+ */
+ PNG_CONST unsigned int samples_per_pixel = (out_ct & 2U) ? 3U : 1U;
+ int processing;
+ png_uint_32 y;
+ PNG_CONST store_palette_entry *in_palette = dp->this.palette;
+ PNG_CONST int in_is_transparent = dp->this.is_transparent;
+ int out_npalette = -1;
+ int out_is_transparent = 0; /* Just refers to the palette case */
+ store_palette out_palette;
+ validate_info vi;
+
+ /* Check for row overwrite errors */
+ store_image_check(dp->this.ps, pp, 0);
+
+ /* Supply the input and output sample depths here - 8 for an indexed image,
+ * otherwise the bit depth.
+ */
+ init_validate_info(&vi, dp, pp, in_ct==3?8:in_bd, out_ct==3?8:out_bd);
+
+ processing = (vi.gamma_correction > 0 && !dp->threshold_test)
+ || in_bd != out_bd || in_ct != out_ct || vi.do_background;
+
+ /* TODO: FIX THIS: MAJOR BUG! If the transformations all happen inside
+ * the palette there is no way of finding out, because libpng fails to
+ * update the palette on png_read_update_info. Indeed, libpng doesn't
+ * even do the required work until much later, when it doesn't have any
+ * info pointer. Oops. For the moment 'processing' is turned off if
+ * out_ct is palette.
+ */
+ if (in_ct == 3 && out_ct == 3)
+ processing = 0;
+
+ if (processing && out_ct == 3)
+ out_is_transparent = read_palette(out_palette, &out_npalette, pp, pi);
+
+ for (y=0; y<h; ++y)
+ {
+ png_const_bytep pRow = store_image_row(ps, pp, 0, y);
+ png_byte std[STANDARD_ROWMAX];
+
+ transform_row(pp, std, in_ct, in_bd, y);
+
+ if (processing)
+ {
+ unsigned int x;
+
+ for (x=0; x<w; ++x)
+ {
+ double alpha = 1; /* serves as a flag value */
+
+ /* Record the palette index for index images. */
+ PNG_CONST unsigned int in_index =
+ in_ct == 3 ? sample(std, 3, in_bd, x, 0) : 256;
+ PNG_CONST unsigned int out_index =
+ out_ct == 3 ? sample(std, 3, out_bd, x, 0) : 256;
+
+ /* Handle input alpha - png_set_background will cause the output
+ * alpha to disappear so there is nothing to check.
+ */
+ if ((in_ct & PNG_COLOR_MASK_ALPHA) != 0 || (in_ct == 3 &&
+ in_is_transparent))
+ {
+ PNG_CONST unsigned int input_alpha = in_ct == 3 ?
+ dp->this.palette[in_index].alpha :
+ sample(std, in_ct, in_bd, x, samples_per_pixel);
+
+ unsigned int output_alpha = 65536 /* as a flag value */;
+
+ if (out_ct == 3)
+ {
+ if (out_is_transparent)
+ output_alpha = out_palette[out_index].alpha;
+ }
+
+ else if ((out_ct & PNG_COLOR_MASK_ALPHA) != 0)
+ output_alpha = sample(pRow, out_ct, out_bd, x,
+ samples_per_pixel);
+
+ if (output_alpha != 65536)
+ alpha = gamma_component_validate("alpha", &vi, input_alpha,
+ output_alpha, -1/*alpha*/, 0/*background*/);
+
+ else /* no alpha in output */
+ {
+ /* This is a copy of the calculation of 'i' above in order to
+ * have the alpha value to use in the background calculation.
+ */
+ alpha = input_alpha >> vi.isbit_shift;
+ alpha /= vi.sbit_max;
+ }
+ }
+
+ /* Handle grayscale or RGB components. */
+ if ((in_ct & PNG_COLOR_MASK_COLOR) == 0) /* grayscale */
+ (void)gamma_component_validate("gray", &vi,
+ sample(std, in_ct, in_bd, x, 0),
+ sample(pRow, out_ct, out_bd, x, 0), alpha/*component*/,
+ vi.background_red);
+ else /* RGB or palette */
+ {
+ (void)gamma_component_validate("red", &vi,
+ in_ct == 3 ? in_palette[in_index].red :
+ sample(std, in_ct, in_bd, x, 0),
+ out_ct == 3 ? out_palette[out_index].red :
+ sample(pRow, out_ct, out_bd, x, 0),
+ alpha/*component*/, vi.background_red);
+
+ (void)gamma_component_validate("green", &vi,
+ in_ct == 3 ? in_palette[in_index].green :
+ sample(std, in_ct, in_bd, x, 1),
+ out_ct == 3 ? out_palette[out_index].green :
+ sample(pRow, out_ct, out_bd, x, 1),
+ alpha/*component*/, vi.background_green);
+
+ (void)gamma_component_validate("blue", &vi,
+ in_ct == 3 ? in_palette[in_index].blue :
+ sample(std, in_ct, in_bd, x, 2),
+ out_ct == 3 ? out_palette[out_index].blue :
+ sample(pRow, out_ct, out_bd, x, 2),
+ alpha/*component*/, vi.background_blue);
+ }
+ }
+ }
+
+ else if (memcmp(std, pRow, cbRow) != 0)
+ {
+ char msg[64];
+
+ /* No transform is expected on the threshold tests. */
+ sprintf(msg, "gamma: below threshold row %d changed", y);
+
+ png_error(pp, msg);
+ }
+ } /* row (y) loop */
+
+ dp->this.ps->validated = 1;
+}
+
+static void
+gamma_end(png_structp pp, png_infop pi)
+{
+ gamma_display *dp = voidcast(gamma_display*, png_get_progressive_ptr(pp));
+
+ if (!dp->this.speed)
+ gamma_image_validate(dp, pp, pi);
+ else
+ dp->this.ps->validated = 1;
+}
+
+/* A single test run checking a gamma transformation.
+ *
+ * maxabs: maximum absolute error as a fraction
+ * maxout: maximum output error in the output units
+ * maxpc: maximum percentage error (as a percentage)
+ */
+static void
+gamma_test(png_modifier *pmIn, PNG_CONST png_byte colour_typeIn,
+ PNG_CONST png_byte bit_depthIn, PNG_CONST int palette_numberIn,
+ PNG_CONST int interlace_typeIn,
+ PNG_CONST double file_gammaIn, PNG_CONST double screen_gammaIn,
+ PNG_CONST png_byte sbitIn, PNG_CONST int threshold_testIn,
+ PNG_CONST char *name,
+ PNG_CONST int use_input_precisionIn, PNG_CONST int scale16In,
+ PNG_CONST int expand16In, PNG_CONST int do_backgroundIn,
+ PNG_CONST png_color_16 *bkgd_colorIn, double bkgd_gammaIn)
+{
+ gamma_display d;
+ context(&pmIn->this, fault);
+
+ gamma_display_init(&d, pmIn, FILEID(colour_typeIn, bit_depthIn,
+ palette_numberIn, interlace_typeIn, 0, 0, 0),
+ file_gammaIn, screen_gammaIn, sbitIn,
+ threshold_testIn, use_input_precisionIn, scale16In,
+ expand16In, do_backgroundIn, bkgd_colorIn, bkgd_gammaIn);
+
+ Try
+ {
+ png_structp pp;
+ png_infop pi;
+ gama_modification gama_mod;
+ srgb_modification srgb_mod;
+ sbit_modification sbit_mod;
+
+ /* For the moment don't use the png_modifier support here. */
+ d.pm->encoding_counter = 0;
+ modifier_set_encoding(d.pm); /* Just resets everything */
+ d.pm->current_gamma = d.file_gamma;
+
+ /* Make an appropriate modifier to set the PNG file gamma to the
+ * given gamma value and the sBIT chunk to the given precision.
+ */
+ d.pm->modifications = NULL;
+ gama_modification_init(&gama_mod, d.pm, d.file_gamma);
+ srgb_modification_init(&srgb_mod, d.pm, 127 /*delete*/);
+ if (d.sbit > 0)
+ sbit_modification_init(&sbit_mod, d.pm, d.sbit);
+
+ modification_reset(d.pm->modifications);
+
+ /* Get a png_struct for writing the image. */
+ pp = set_modifier_for_read(d.pm, &pi, d.this.id, name);
+ standard_palette_init(&d.this);
+
+ /* Introduce the correct read function. */
+ if (d.pm->this.progressive)
+ {
+ /* Share the row function with the standard implementation. */
+ png_set_progressive_read_fn(pp, &d, gamma_info, progressive_row,
+ gamma_end);
+
+ /* Now feed data into the reader until we reach the end: */
+ modifier_progressive_read(d.pm, pp, pi);
+ }
+ else
+ {
+ /* modifier_read expects a png_modifier* */
+ png_set_read_fn(pp, d.pm, modifier_read);
+
+ /* Check the header values: */
+ png_read_info(pp, pi);
+
+ /* Process the 'info' requirements. Only one image is generated */
+ gamma_info_imp(&d, pp, pi);
+
+ sequential_row(&d.this, pp, pi, -1, 0);
+
+ if (!d.this.speed)
+ gamma_image_validate(&d, pp, pi);
+ else
+ d.this.ps->validated = 1;
+ }
+
+ modifier_reset(d.pm);
+
+ if (d.pm->log && !d.threshold_test && !d.this.speed)
+ fprintf(stderr, "%d bit %s %s: max error %f (%.2g, %2g%%)\n",
+ d.this.bit_depth, colour_types[d.this.colour_type], name,
+ d.maxerrout, d.maxerrabs, 100*d.maxerrpc);
+
+ /* Log the summary values too. */
+ if (d.this.colour_type == 0 || d.this.colour_type == 4)
+ {
+ switch (d.this.bit_depth)
+ {
+ case 1:
+ break;
+
+ case 2:
+ if (d.maxerrout > d.pm->error_gray_2)
+ d.pm->error_gray_2 = d.maxerrout;
+
+ break;
+
+ case 4:
+ if (d.maxerrout > d.pm->error_gray_4)
+ d.pm->error_gray_4 = d.maxerrout;
+
+ break;
+
+ case 8:
+ if (d.maxerrout > d.pm->error_gray_8)
+ d.pm->error_gray_8 = d.maxerrout;
+
+ break;
+
+ case 16:
+ if (d.maxerrout > d.pm->error_gray_16)
+ d.pm->error_gray_16 = d.maxerrout;
+
+ break;
+
+ default:
+ png_error(pp, "bad bit depth (internal: 1)");
+ }
+ }
+
+ else if (d.this.colour_type == 2 || d.this.colour_type == 6)
+ {
+ switch (d.this.bit_depth)
+ {
+ case 8:
+
+ if (d.maxerrout > d.pm->error_color_8)
+ d.pm->error_color_8 = d.maxerrout;
+
+ break;
+
+ case 16:
+
+ if (d.maxerrout > d.pm->error_color_16)
+ d.pm->error_color_16 = d.maxerrout;
+
+ break;
+
+ default:
+ png_error(pp, "bad bit depth (internal: 2)");
+ }
+ }
+
+ else if (d.this.colour_type == 3)
+ {
+ if (d.maxerrout > d.pm->error_indexed)
+ d.pm->error_indexed = d.maxerrout;
+ }
+ }
+
+ Catch(fault)
+ modifier_reset((png_modifier*)fault);
+}
+
+static void gamma_threshold_test(png_modifier *pm, png_byte colour_type,
+ png_byte bit_depth, int interlace_type, double file_gamma,
+ double screen_gamma)
+{
+ size_t pos = 0;
+ char name[64];
+ pos = safecat(name, sizeof name, pos, "threshold ");
+ pos = safecatd(name, sizeof name, pos, file_gamma, 3);
+ pos = safecat(name, sizeof name, pos, "/");
+ pos = safecatd(name, sizeof name, pos, screen_gamma, 3);
+
+ (void)gamma_test(pm, colour_type, bit_depth, 0/*palette*/, interlace_type,
+ file_gamma, screen_gamma, 0/*sBIT*/, 1/*threshold test*/, name,
+ 0 /*no input precision*/,
+ 0 /*no scale16*/, 0 /*no expand16*/, 0 /*no background*/, 0 /*hence*/,
+ 0 /*no background gamma*/);
+}
+
+static void
+perform_gamma_threshold_tests(png_modifier *pm)
+{
+ png_byte colour_type = 0;
+ png_byte bit_depth = 0;
+ int palette_number = 0;
+
+ /* Don't test more than one instance of each palette - it's pointless, in
+ * fact this test is somewhat excessive since libpng doesn't make this
+ * decision based on colour type or bit depth!
+ */
+ while (next_format(&colour_type, &bit_depth, &palette_number))
+ if (palette_number == 0)
+ {
+ double test_gamma = 1.0;
+ while (test_gamma >= .4)
+ {
+ /* There's little point testing the interlacing vs non-interlacing,
+ * but this can be set from the command line.
+ */
+ gamma_threshold_test(pm, colour_type, bit_depth, pm->interlace_type,
+ test_gamma, 1/test_gamma);
+ test_gamma *= .95;
+ }
+
+ /* And a special test for sRGB */
+ gamma_threshold_test(pm, colour_type, bit_depth, pm->interlace_type,
+ .45455, 2.2);
+
+ if (fail(pm))
+ return;
+ }
+}
+
+static void gamma_transform_test(png_modifier *pm,
+ PNG_CONST png_byte colour_type, PNG_CONST png_byte bit_depth,
+ PNG_CONST int palette_number,
+ PNG_CONST int interlace_type, PNG_CONST double file_gamma,
+ PNG_CONST double screen_gamma, PNG_CONST png_byte sbit,
+ PNG_CONST int use_input_precision, PNG_CONST int scale16)
+{
+ size_t pos = 0;
+ char name[64];
+
+ if (sbit != bit_depth && sbit != 0)
+ {
+ pos = safecat(name, sizeof name, pos, "sbit(");
+ pos = safecatn(name, sizeof name, pos, sbit);
+ pos = safecat(name, sizeof name, pos, ") ");
+ }
+
+ else
+ pos = safecat(name, sizeof name, pos, "gamma ");
+
+ if (scale16)
+ pos = safecat(name, sizeof name, pos, "16to8 ");
+
+ pos = safecatd(name, sizeof name, pos, file_gamma, 3);
+ pos = safecat(name, sizeof name, pos, "->");
+ pos = safecatd(name, sizeof name, pos, screen_gamma, 3);
+
+ gamma_test(pm, colour_type, bit_depth, palette_number, interlace_type,
+ file_gamma, screen_gamma, sbit, 0, name, use_input_precision,
+ scale16, pm->test_gamma_expand16, 0 , 0, 0);
+}
+
+static void perform_gamma_transform_tests(png_modifier *pm)
+{
+ png_byte colour_type = 0;
+ png_byte bit_depth = 0;
+ int palette_number = 0;
+
+ while (next_format(&colour_type, &bit_depth, &palette_number))
+ {
+ unsigned int i, j;
+
+ for (i=0; i<pm->ngamma_tests; ++i) for (j=0; j<pm->ngamma_tests; ++j)
+ if (i != j)
+ {
+ gamma_transform_test(pm, colour_type, bit_depth, palette_number,
+ pm->interlace_type, 1/pm->gammas[i], pm->gammas[j], 0/*sBIT*/,
+ pm->use_input_precision, 0 /*do not scale16*/);
+
+ if (fail(pm))
+ return;
+ }
+ }
+}
+
+static void perform_gamma_sbit_tests(png_modifier *pm)
+{
+ png_byte sbit;
+
+ /* The only interesting cases are colour and grayscale, alpha is ignored here
+ * for overall speed. Only bit depths where sbit is less than the bit depth
+ * are tested.
+ */
+ for (sbit=pm->sbitlow; sbit<(1<<READ_BDHI); ++sbit)
+ {
+ png_byte colour_type, bit_depth;
+ int npalette;
+
+ colour_type = bit_depth = 0;
+ npalette = 0;
+
+ while (next_format(&colour_type, &bit_depth, &npalette))
+ if ((colour_type & PNG_COLOR_MASK_ALPHA) == 0 &&
+ ((colour_type == 3 && sbit < 8) ||
+ (colour_type != 3 && sbit < bit_depth)))
+ {
+ unsigned int i;
+
+ for (i=0; i<pm->ngamma_tests; ++i)
+ {
+ unsigned int j;
+
+ for (j=0; j<pm->ngamma_tests; ++j) if (i != j)
+ {
+ gamma_transform_test(pm, colour_type, bit_depth, npalette,
+ pm->interlace_type, 1/pm->gammas[i], pm->gammas[j],
+ sbit, pm->use_input_precision_sbit, 0 /*scale16*/);
+
+ if (fail(pm))
+ return;
+ }
+ }
+ }
+ }
+}
+
+/* Note that this requires a 16 bit source image but produces 8 bit output, so
+ * we only need the 16bit write support, but the 16 bit images are only
+ * generated if DO_16BIT is defined.
+ */
+#ifdef DO_16BIT
+static void perform_gamma_scale16_tests(png_modifier *pm)
+{
+# ifndef PNG_MAX_GAMMA_8
+# define PNG_MAX_GAMMA_8 11
+# endif
+ /* Include the alpha cases here. Note that sbit matches the internal value
+ * used by the library - otherwise we will get spurious errors from the
+ * internal sbit style approximation.
+ *
+ * The threshold test is here because otherwise the 16 to 8 conversion will
+ * proceed *without* gamma correction, and the tests above will fail (but not
+ * by much) - this could be fixed, it only appears with the -g option.
+ */
+ unsigned int i, j;
+ for (i=0; i<pm->ngamma_tests; ++i)
+ {
+ for (j=0; j<pm->ngamma_tests; ++j)
+ {
+ if (i != j &&
+ fabs(pm->gammas[j]/pm->gammas[i]-1) >= PNG_GAMMA_THRESHOLD)
+ {
+ gamma_transform_test(pm, 0, 16, 0, pm->interlace_type,
+ 1/pm->gammas[i], pm->gammas[j], PNG_MAX_GAMMA_8,
+ pm->use_input_precision_16to8, 1 /*scale16*/);
+
+ if (fail(pm))
+ return;
+
+ gamma_transform_test(pm, 2, 16, 0, pm->interlace_type,
+ 1/pm->gammas[i], pm->gammas[j], PNG_MAX_GAMMA_8,
+ pm->use_input_precision_16to8, 1 /*scale16*/);
+
+ if (fail(pm))
+ return;
+
+ gamma_transform_test(pm, 4, 16, 0, pm->interlace_type,
+ 1/pm->gammas[i], pm->gammas[j], PNG_MAX_GAMMA_8,
+ pm->use_input_precision_16to8, 1 /*scale16*/);
+
+ if (fail(pm))
+ return;
+
+ gamma_transform_test(pm, 6, 16, 0, pm->interlace_type,
+ 1/pm->gammas[i], pm->gammas[j], PNG_MAX_GAMMA_8,
+ pm->use_input_precision_16to8, 1 /*scale16*/);
+
+ if (fail(pm))
+ return;
+ }
+ }
+ }
+}
+#endif /* 16 to 8 bit conversion */
+
+#if defined PNG_READ_BACKGROUND_SUPPORTED ||\
+ defined PNG_READ_ALPHA_MODE_SUPPORTED
+static void gamma_composition_test(png_modifier *pm,
+ PNG_CONST png_byte colour_type, PNG_CONST png_byte bit_depth,
+ PNG_CONST int palette_number,
+ PNG_CONST int interlace_type, PNG_CONST double file_gamma,
+ PNG_CONST double screen_gamma,
+ PNG_CONST int use_input_precision, PNG_CONST int do_background,
+ PNG_CONST int expand_16)
+{
+ size_t pos = 0;
+ png_const_charp base;
+ double bg;
+ char name[128];
+ png_color_16 background;
+
+ /* Make up a name and get an appropriate background gamma value. */
+ switch (do_background)
+ {
+ default:
+ base = "";
+ bg = 4; /* should not be used */
+ break;
+ case PNG_BACKGROUND_GAMMA_SCREEN:
+ base = " bckg(Screen):";
+ bg = 1/screen_gamma;
+ break;
+ case PNG_BACKGROUND_GAMMA_FILE:
+ base = " bckg(File):";
+ bg = file_gamma;
+ break;
+ case PNG_BACKGROUND_GAMMA_UNIQUE:
+ base = " bckg(Unique):";
+ /* This tests the handling of a unique value, the math is such that the
+ * value tends to be <1, but is neither screen nor file (even if they
+ * match!)
+ */
+ bg = (file_gamma + screen_gamma) / 3;
+ break;
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ case ALPHA_MODE_OFFSET + PNG_ALPHA_PNG:
+ base = " alpha(PNG)";
+ bg = 4; /* should not be used */
+ break;
+ case ALPHA_MODE_OFFSET + PNG_ALPHA_STANDARD:
+ base = " alpha(Porter-Duff)";
+ bg = 4; /* should not be used */
+ break;
+ case ALPHA_MODE_OFFSET + PNG_ALPHA_OPTIMIZED:
+ base = " alpha(Optimized)";
+ bg = 4; /* should not be used */
+ break;
+ case ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN:
+ base = " alpha(Broken)";
+ bg = 4; /* should not be used */
+ break;
+#endif
+ }
+
+ /* Use random background values - the background is always presented in the
+ * output space (8 or 16 bit components).
+ */
+ if (expand_16 || bit_depth == 16)
+ {
+ png_uint_32 r = random_32();
+
+ background.red = (png_uint_16)r;
+ background.green = (png_uint_16)(r >> 16);
+ r = random_32();
+ background.blue = (png_uint_16)r;
+ background.gray = (png_uint_16)(r >> 16);
+ }
+
+ else /* 8 bit colors */
+ {
+ png_uint_32 r = random_32();
+
+ background.red = (png_byte)r;
+ background.green = (png_byte)(r >> 8);
+ background.blue = (png_byte)(r >> 16);
+ background.gray = (png_byte)(r >> 24);
+ }
+
+ background.index = 193; /* rgb(193,193,193) to detect errors */
+ if (!(colour_type & PNG_COLOR_MASK_COLOR))
+ {
+ /* Grayscale input, we do not convert to RGB (TBD), so we must set the
+ * background to gray - else libpng seems to fail.
+ */
+ background.red = background.green = background.blue = background.gray;
+ }
+
+ pos = safecat(name, sizeof name, pos, "gamma ");
+ pos = safecatd(name, sizeof name, pos, file_gamma, 3);
+ pos = safecat(name, sizeof name, pos, "->");
+ pos = safecatd(name, sizeof name, pos, screen_gamma, 3);
+
+ pos = safecat(name, sizeof name, pos, base);
+ if (do_background < ALPHA_MODE_OFFSET)
+ {
+ /* Include the background color and gamma in the name: */
+ pos = safecat(name, sizeof name, pos, "(");
+ /* This assumes no expand gray->rgb - the current code won't handle that!
+ */
+ if (colour_type & PNG_COLOR_MASK_COLOR)
+ {
+ pos = safecatn(name, sizeof name, pos, background.red);
+ pos = safecat(name, sizeof name, pos, ",");
+ pos = safecatn(name, sizeof name, pos, background.green);
+ pos = safecat(name, sizeof name, pos, ",");
+ pos = safecatn(name, sizeof name, pos, background.blue);
+ }
+ else
+ pos = safecatn(name, sizeof name, pos, background.gray);
+ pos = safecat(name, sizeof name, pos, ")^");
+ pos = safecatd(name, sizeof name, pos, bg, 3);
+ }
+
+ gamma_test(pm, colour_type, bit_depth, palette_number, interlace_type,
+ file_gamma, screen_gamma, 0/*sBIT*/, 0, name, use_input_precision,
+ 0/*strip 16*/, expand_16, do_background, &background, bg);
+}
+
+
+static void
+perform_gamma_composition_tests(png_modifier *pm, int do_background,
+ int expand_16)
+{
+ png_byte colour_type = 0;
+ png_byte bit_depth = 0;
+ int palette_number = 0;
+
+ /* Skip the non-alpha cases - there is no setting of a transparency colour at
+ * present.
+ */
+ while (next_format(&colour_type, &bit_depth, &palette_number))
+ if ((colour_type & PNG_COLOR_MASK_ALPHA) != 0)
+ {
+ unsigned int i, j;
+
+ /* Don't skip the i==j case here - it's relevant. */
+ for (i=0; i<pm->ngamma_tests; ++i) for (j=0; j<pm->ngamma_tests; ++j)
+ {
+ gamma_composition_test(pm, colour_type, bit_depth, palette_number,
+ pm->interlace_type, 1/pm->gammas[i], pm->gammas[j],
+ pm->use_input_precision, do_background, expand_16);
+
+ if (fail(pm))
+ return;
+ }
+ }
+}
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE */
+
+static void
+init_gamma_errors(png_modifier *pm)
+{
+ pm->error_gray_2 = pm->error_gray_4 = pm->error_gray_8 = 0;
+ pm->error_color_8 = 0;
+ pm->error_indexed = 0;
+ pm->error_gray_16 = pm->error_color_16 = 0;
+}
+
+static void
+summarize_gamma_errors(png_modifier *pm, png_const_charp who, int low_bit_depth)
+{
+ if (who)
+ printf("Gamma correction with %s:\n", who);
+
+ if (low_bit_depth)
+ {
+ printf(" 2 bit gray: %.5f\n", pm->error_gray_2);
+ printf(" 4 bit gray: %.5f\n", pm->error_gray_4);
+ printf(" 8 bit gray: %.5f\n", pm->error_gray_8);
+ printf(" 8 bit color: %.5f\n", pm->error_color_8);
+ printf(" indexed: %.5f\n", pm->error_indexed);
+ }
+
+#ifdef DO_16BIT
+ printf(" 16 bit gray: %.5f\n", pm->error_gray_16);
+ printf(" 16 bit color: %.5f\n", pm->error_color_16);
+#endif
+}
+
+static void
+perform_gamma_test(png_modifier *pm, int summary)
+{
+ /*TODO: remove this*/
+ /* Save certain values for the temporary overrides below. */
+ unsigned int calculations_use_input_precision =
+ pm->calculations_use_input_precision;
+ double maxout8 = pm->maxout8;
+
+ /* First some arbitrary no-transform tests: */
+ if (!pm->this.speed && pm->test_gamma_threshold)
+ {
+ perform_gamma_threshold_tests(pm);
+
+ if (fail(pm))
+ return;
+ }
+
+ /* Now some real transforms. */
+ if (pm->test_gamma_transform)
+ {
+ init_gamma_errors(pm);
+ /*TODO: remove this. Necessary because the current libpng
+ * implementation works in 8 bits:
+ */
+ if (pm->test_gamma_expand16)
+ pm->calculations_use_input_precision = 1;
+ perform_gamma_transform_tests(pm);
+ if (!calculations_use_input_precision)
+ pm->calculations_use_input_precision = 0;
+
+ if (summary)
+ {
+ printf("Gamma correction error summary\n\n");
+ printf("The printed value is the maximum error in the pixel values\n");
+ printf("calculated by the libpng gamma correction code. The error\n");
+ printf("is calculated as the difference between the output pixel\n");
+ printf("value (always an integer) and the ideal value from the\n");
+ printf("libpng specification (typically not an integer).\n\n");
+
+ printf("Expect this value to be less than .5 for 8 bit formats,\n");
+ printf("less than 1 for formats with fewer than 8 bits and a small\n");
+ printf("number (typically less than 5) for the 16 bit formats.\n");
+ printf("For performance reasons the value for 16 bit formats\n");
+ printf("increases when the image file includes an sBIT chunk.\n\n");
+
+ summarize_gamma_errors(pm, 0/*who*/, 1);
+ }
+ }
+
+ /* The sbit tests produce much larger errors: */
+ if (pm->test_gamma_sbit)
+ {
+ init_gamma_errors(pm);
+ perform_gamma_sbit_tests(pm);
+
+ if (summary)
+ summarize_gamma_errors(pm, "sBIT", pm->sbitlow < 8U);
+ }
+
+#ifdef DO_16BIT /* Should be READ_16BIT_SUPPORTED */
+ if (pm->test_gamma_scale16)
+ {
+ /* The 16 to 8 bit strip operations: */
+ init_gamma_errors(pm);
+ perform_gamma_scale16_tests(pm);
+
+ if (summary)
+ {
+ printf("Gamma correction with 16 to 8 bit reduction:\n");
+ printf(" 16 bit gray: %.5f\n", pm->error_gray_16);
+ printf(" 16 bit color: %.5f\n", pm->error_color_16);
+ }
+ }
+#endif
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ if (pm->test_gamma_background)
+ {
+ init_gamma_errors(pm);
+
+ /*TODO: remove this. Necessary because the current libpng
+ * implementation works in 8 bits:
+ */
+ if (pm->test_gamma_expand16)
+ {
+ pm->calculations_use_input_precision = 1;
+ pm->maxout8 = .499; /* because the 16 bit background is smashed */
+ }
+ perform_gamma_composition_tests(pm, PNG_BACKGROUND_GAMMA_UNIQUE,
+ pm->test_gamma_expand16);
+ if (!calculations_use_input_precision)
+ pm->calculations_use_input_precision = 0;
+ pm->maxout8 = maxout8;
+
+ if (summary)
+ summarize_gamma_errors(pm, "background", 1);
+ }
+#endif
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ if (pm->test_gamma_alpha_mode)
+ {
+ int do_background;
+
+ init_gamma_errors(pm);
+
+ /*TODO: remove this. Necessary because the current libpng
+ * implementation works in 8 bits:
+ */
+ if (pm->test_gamma_expand16)
+ pm->calculations_use_input_precision = 1;
+ for (do_background = ALPHA_MODE_OFFSET + PNG_ALPHA_STANDARD;
+ do_background <= ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN && !fail(pm);
+ ++do_background)
+ perform_gamma_composition_tests(pm, do_background,
+ pm->test_gamma_expand16);
+ if (!calculations_use_input_precision)
+ pm->calculations_use_input_precision = 0;
+
+ if (summary)
+ summarize_gamma_errors(pm, "alpha mode", 1);
+ }
+#endif
+}
+#endif /* PNG_READ_GAMMA_SUPPORTED */
+
+/* INTERLACE MACRO VALIDATION */
+/* This is copied verbatim from the specification, it is simply the pass
+ * number in which each pixel in each 8x8 tile appears. The array must
+ * be indexed adam7[y][x] and notice that the pass numbers are based at
+ * 1, not 0 - the base libpng uses.
+ */
+static PNG_CONST
+png_byte adam7[8][8] =
+{
+ { 1,6,4,6,2,6,4,6 },
+ { 7,7,7,7,7,7,7,7 },
+ { 5,6,5,6,5,6,5,6 },
+ { 7,7,7,7,7,7,7,7 },
+ { 3,6,4,6,3,6,4,6 },
+ { 7,7,7,7,7,7,7,7 },
+ { 5,6,5,6,5,6,5,6 },
+ { 7,7,7,7,7,7,7,7 }
+};
+
+/* This routine validates all the interlace support macros in png.h for
+ * a variety of valid PNG widths and heights. It uses a number of similarly
+ * named internal routines that feed off the above array.
+ */
+static png_uint_32
+png_pass_start_row(int pass)
+{
+ int x, y;
+ ++pass;
+ for (y=0; y<8; ++y) for (x=0; x<8; ++x) if (adam7[y][x] == pass)
+ return y;
+ return 0xf;
+}
+
+static png_uint_32
+png_pass_start_col(int pass)
+{
+ int x, y;
+ ++pass;
+ for (x=0; x<8; ++x) for (y=0; y<8; ++y) if (adam7[y][x] == pass)
+ return x;
+ return 0xf;
+}
+
+static int
+png_pass_row_shift(int pass)
+{
+ int x, y, base=(-1), inc=8;
+ ++pass;
+ for (y=0; y<8; ++y) for (x=0; x<8; ++x) if (adam7[y][x] == pass)
+ {
+ if (base == (-1))
+ base = y;
+ else if (base == y)
+ {}
+ else if (inc == y-base)
+ base=y;
+ else if (inc == 8)
+ inc = y-base, base=y;
+ else if (inc != y-base)
+ return 0xff; /* error - more than one 'inc' value! */
+ }
+
+ if (base == (-1)) return 0xfe; /* error - no row in pass! */
+
+ /* The shift is always 1, 2 or 3 - no pass has all the rows! */
+ switch (inc)
+ {
+case 2: return 1;
+case 4: return 2;
+case 8: return 3;
+default: break;
+ }
+
+ /* error - unrecognized 'inc' */
+ return (inc << 8) + 0xfd;
+}
+
+static int
+png_pass_col_shift(int pass)
+{
+ int x, y, base=(-1), inc=8;
+ ++pass;
+ for (x=0; x<8; ++x) for (y=0; y<8; ++y) if (adam7[y][x] == pass)
+ {
+ if (base == (-1))
+ base = x;
+ else if (base == x)
+ {}
+ else if (inc == x-base)
+ base=x;
+ else if (inc == 8)
+ inc = x-base, base=x;
+ else if (inc != x-base)
+ return 0xff; /* error - more than one 'inc' value! */
+ }
+
+ if (base == (-1)) return 0xfe; /* error - no row in pass! */
+
+ /* The shift is always 1, 2 or 3 - no pass has all the rows! */
+ switch (inc)
+ {
+case 1: return 0; /* pass 7 has all the columns */
+case 2: return 1;
+case 4: return 2;
+case 8: return 3;
+default: break;
+ }
+
+ /* error - unrecognized 'inc' */
+ return (inc << 8) + 0xfd;
+}
+
+static png_uint_32
+png_row_from_pass_row(png_uint_32 yIn, int pass)
+{
+ /* By examination of the array: */
+ switch (pass)
+ {
+case 0: return yIn * 8;
+case 1: return yIn * 8;
+case 2: return yIn * 8 + 4;
+case 3: return yIn * 4;
+case 4: return yIn * 4 + 2;
+case 5: return yIn * 2;
+case 6: return yIn * 2 + 1;
+default: break;
+ }
+
+ return 0xff; /* bad pass number */
+}
+
+static png_uint_32
+png_col_from_pass_col(png_uint_32 xIn, int pass)
+{
+ /* By examination of the array: */
+ switch (pass)
+ {
+case 0: return xIn * 8;
+case 1: return xIn * 8 + 4;
+case 2: return xIn * 4;
+case 3: return xIn * 4 + 2;
+case 4: return xIn * 2;
+case 5: return xIn * 2 + 1;
+case 6: return xIn;
+default: break;
+ }
+
+ return 0xff; /* bad pass number */
+}
+
+static int
+png_row_in_interlace_pass(png_uint_32 y, int pass)
+{
+ /* Is row 'y' in pass 'pass'? */
+ int x;
+ y &= 7;
+ ++pass;
+ for (x=0; x<8; ++x) if (adam7[y][x] == pass)
+ return 1;
+
+ return 0;
+}
+
+static int
+png_col_in_interlace_pass(png_uint_32 x, int pass)
+{
+ /* Is column 'x' in pass 'pass'? */
+ int y;
+ x &= 7;
+ ++pass;
+ for (y=0; y<8; ++y) if (adam7[y][x] == pass)
+ return 1;
+
+ return 0;
+}
+
+static png_uint_32
+png_pass_rows(png_uint_32 height, int pass)
+{
+ png_uint_32 tiles = height>>3;
+ png_uint_32 rows = 0;
+ unsigned int x, y;
+
+ height &= 7;
+ ++pass;
+ for (y=0; y<8; ++y) for (x=0; x<8; ++x) if (adam7[y][x] == pass)
+ {
+ rows += tiles;
+ if (y < height) ++rows;
+ break; /* i.e. break the 'x', column, loop. */
+ }
+
+ return rows;
+}
+
+static png_uint_32
+png_pass_cols(png_uint_32 width, int pass)
+{
+ png_uint_32 tiles = width>>3;
+ png_uint_32 cols = 0;
+ unsigned int x, y;
+
+ width &= 7;
+ ++pass;
+ for (x=0; x<8; ++x) for (y=0; y<8; ++y) if (adam7[y][x] == pass)
+ {
+ cols += tiles;
+ if (x < width) ++cols;
+ break; /* i.e. break the 'y', row, loop. */
+ }
+
+ return cols;
+}
+
+static void
+perform_interlace_macro_validation(void)
+{
+ /* The macros to validate, first those that depend only on pass:
+ *
+ * PNG_PASS_START_ROW(pass)
+ * PNG_PASS_START_COL(pass)
+ * PNG_PASS_ROW_SHIFT(pass)
+ * PNG_PASS_COL_SHIFT(pass)
+ */
+ int pass;
+
+ for (pass=0; pass<7; ++pass)
+ {
+ png_uint_32 m, f, v;
+
+ m = PNG_PASS_START_ROW(pass);
+ f = png_pass_start_row(pass);
+ if (m != f)
+ {
+ fprintf(stderr, "PNG_PASS_START_ROW(%d) = %u != %x\n", pass, m, f);
+ exit(1);
+ }
+
+ m = PNG_PASS_START_COL(pass);
+ f = png_pass_start_col(pass);
+ if (m != f)
+ {
+ fprintf(stderr, "PNG_PASS_START_COL(%d) = %u != %x\n", pass, m, f);
+ exit(1);
+ }
+
+ m = PNG_PASS_ROW_SHIFT(pass);
+ f = png_pass_row_shift(pass);
+ if (m != f)
+ {
+ fprintf(stderr, "PNG_PASS_ROW_SHIFT(%d) = %u != %x\n", pass, m, f);
+ exit(1);
+ }
+
+ m = PNG_PASS_COL_SHIFT(pass);
+ f = png_pass_col_shift(pass);
+ if (m != f)
+ {
+ fprintf(stderr, "PNG_PASS_COL_SHIFT(%d) = %u != %x\n", pass, m, f);
+ exit(1);
+ }
+
+ /* Macros that depend on the image or sub-image height too:
+ *
+ * PNG_PASS_ROWS(height, pass)
+ * PNG_PASS_COLS(width, pass)
+ * PNG_ROW_FROM_PASS_ROW(yIn, pass)
+ * PNG_COL_FROM_PASS_COL(xIn, pass)
+ * PNG_ROW_IN_INTERLACE_PASS(y, pass)
+ * PNG_COL_IN_INTERLACE_PASS(x, pass)
+ */
+ for (v=0;;)
+ {
+ /* First the base 0 stuff: */
+ m = PNG_ROW_FROM_PASS_ROW(v, pass);
+ f = png_row_from_pass_row(v, pass);
+ if (m != f)
+ {
+ fprintf(stderr, "PNG_ROW_FROM_PASS_ROW(%u, %d) = %u != %x\n",
+ v, pass, m, f);
+ exit(1);
+ }
+
+ m = PNG_COL_FROM_PASS_COL(v, pass);
+ f = png_col_from_pass_col(v, pass);
+ if (m != f)
+ {
+ fprintf(stderr, "PNG_COL_FROM_PASS_COL(%u, %d) = %u != %x\n",
+ v, pass, m, f);
+ exit(1);
+ }
+
+ m = PNG_ROW_IN_INTERLACE_PASS(v, pass);
+ f = png_row_in_interlace_pass(v, pass);
+ if (m != f)
+ {
+ fprintf(stderr, "PNG_ROW_IN_INTERLACE_PASS(%u, %d) = %u != %x\n",
+ v, pass, m, f);
+ exit(1);
+ }
+
+ m = PNG_COL_IN_INTERLACE_PASS(v, pass);
+ f = png_col_in_interlace_pass(v, pass);
+ if (m != f)
+ {
+ fprintf(stderr, "PNG_COL_IN_INTERLACE_PASS(%u, %d) = %u != %x\n",
+ v, pass, m, f);
+ exit(1);
+ }
+
+ /* Then the base 1 stuff: */
+ ++v;
+ m = PNG_PASS_ROWS(v, pass);
+ f = png_pass_rows(v, pass);
+ if (m != f)
+ {
+ fprintf(stderr, "PNG_PASS_ROWS(%u, %d) = %u != %x\n",
+ v, pass, m, f);
+ exit(1);
+ }
+
+ m = PNG_PASS_COLS(v, pass);
+ f = png_pass_cols(v, pass);
+ if (m != f)
+ {
+ fprintf(stderr, "PNG_PASS_COLS(%u, %d) = %u != %x\n",
+ v, pass, m, f);
+ exit(1);
+ }
+
+ /* Move to the next v - the stepping algorithm starts skipping
+ * values above 1024.
+ */
+ if (v > 1024)
+ {
+ if (v == PNG_UINT_31_MAX)
+ break;
+
+ v = (v << 1) ^ v;
+ if (v >= PNG_UINT_31_MAX)
+ v = PNG_UINT_31_MAX-1;
+ }
+ }
+ }
+}
+
+/* Test color encodings. These values are back-calculated from the published
+ * chromaticities. The values are accurate to about 14 decimal places; 15 are
+ * given. These values are much more accurate than the ones given in the spec,
+ * which typically don't exceed 4 decimal places. This allows testing of the
+ * libpng code to its theoretical accuracy of 4 decimal places. (If pngvalid
+ * used the published errors the 'slack' permitted would have to be +/-.5E-4 or
+ * more.)
+ *
+ * The png_modifier code assumes that encodings[0] is sRGB and treats it
+ * specially: do not change the first entry in this list!
+ */
+static PNG_CONST color_encoding test_encodings[] =
+{
+/* sRGB: must be first in this list! */
+/*gamma:*/ { 1/2.2,
+/*red: */ { 0.412390799265959, 0.212639005871510, 0.019330818715592 },
+/*green:*/ { 0.357584339383878, 0.715168678767756, 0.119194779794626 },
+/*blue: */ { 0.180480788401834, 0.072192315360734, 0.950532152249660} },
+/* Kodak ProPhoto (wide gamut) */
+/*gamma:*/ { 1/1.6 /*approximate: uses 1.8 power law compared to sRGB 2.4*/,
+/*red: */ { 0.797760489672303, 0.288071128229293, 0.000000000000000 },
+/*green:*/ { 0.135185837175740, 0.711843217810102, 0.000000000000000 },
+/*blue: */ { 0.031349349581525, 0.000085653960605, 0.825104602510460} },
+/* Adobe RGB (1998) */
+/*gamma:*/ { 1/(2+51./256),
+/*red: */ { 0.576669042910131, 0.297344975250536, 0.027031361386412 },
+/*green:*/ { 0.185558237906546, 0.627363566255466, 0.070688852535827 },
+/*blue: */ { 0.188228646234995, 0.075291458493998, 0.991337536837639} },
+/* Adobe Wide Gamut RGB */
+/*gamma:*/ { 1/(2+51./256),
+/*red: */ { 0.716500716779386, 0.258728243040113, 0.000000000000000 },
+/*green:*/ { 0.101020574397477, 0.724682314948566, 0.051211818965388 },
+/*blue: */ { 0.146774385252705, 0.016589442011321, 0.773892783545073} },
+};
+
+/* signal handler
+ *
+ * This attempts to trap signals and escape without crashing. It needs a
+ * context pointer so that it can throw an exception (call longjmp) to recover
+ * from the condition; this is handled by making the png_modifier used by 'main'
+ * into a global variable.
+ */
+static png_modifier pm;
+
+static void signal_handler(int signum)
+{
+
+ size_t pos = 0;
+ char msg[64];
+
+ pos = safecat(msg, sizeof msg, pos, "caught signal: ");
+
+ switch (signum)
+ {
+ case SIGABRT:
+ pos = safecat(msg, sizeof msg, pos, "abort");
+ break;
+
+ case SIGFPE:
+ pos = safecat(msg, sizeof msg, pos, "floating point exception");
+ break;
+
+ case SIGILL:
+ pos = safecat(msg, sizeof msg, pos, "illegal instruction");
+ break;
+
+ case SIGINT:
+ pos = safecat(msg, sizeof msg, pos, "interrupt");
+ break;
+
+ case SIGSEGV:
+ pos = safecat(msg, sizeof msg, pos, "invalid memory access");
+ break;
+
+ case SIGTERM:
+ pos = safecat(msg, sizeof msg, pos, "termination request");
+ break;
+
+ default:
+ pos = safecat(msg, sizeof msg, pos, "unknown ");
+ pos = safecatn(msg, sizeof msg, pos, signum);
+ break;
+ }
+
+ store_log(&pm.this, NULL/*png_structp*/, msg, 1/*error*/);
+
+ /* And finally throw an exception so we can keep going, unless this is
+ * SIGTERM in which case stop now.
+ */
+ if (signum != SIGTERM)
+ {
+ struct exception_context *the_exception_context =
+ &pm.this.exception_context;
+
+ Throw &pm.this;
+ }
+
+ else
+ exit(1);
+}
+
+/* main program */
+int main(int argc, PNG_CONST char **argv)
+{
+ volatile int summary = 1; /* Print the error summary at the end */
+ volatile int memstats = 0; /* Print memory statistics at the end */
+
+ /* Create the given output file on success: */
+ PNG_CONST char *volatile touch = NULL;
+
+ /* This is an array of standard gamma values (believe it or not I've seen
+ * every one of these mentioned somewhere.)
+ *
+ * In the following list the most useful values are first!
+ */
+ static double
+ gammas[]={2.2, 1.0, 2.2/1.45, 1.8, 1.5, 2.4, 2.5, 2.62, 2.9};
+
+ /* This records the command and arguments: */
+ size_t cp = 0;
+ char command[1024];
+
+ anon_context(&pm.this);
+
+ /* Add appropriate signal handlers, just the ANSI specified ones: */
+ signal(SIGABRT, signal_handler);
+ signal(SIGFPE, signal_handler);
+ signal(SIGILL, signal_handler);
+ signal(SIGINT, signal_handler);
+ signal(SIGSEGV, signal_handler);
+ signal(SIGTERM, signal_handler);
+
+#ifdef HAVE_FEENABLEEXCEPT
+ /* Only required to enable FP exceptions on platforms where they start off
+ * disabled; this is not necessary but if it is not done pngvalid will likely
+ * end up ignoring FP conditions that other platforms fault.
+ */
+ feenableexcept(FE_DIVBYZERO | FE_INVALID | FE_OVERFLOW);
+#endif
+
+ modifier_init(&pm);
+
+ /* Preallocate the image buffer, because we know how big it needs to be,
+ * note that, for testing purposes, it is deliberately mis-aligned by tag
+ * bytes either side. All rows have an additional five bytes of padding for
+ * overwrite checking.
+ */
+ store_ensure_image(&pm.this, NULL, 2, TRANSFORM_ROWMAX, TRANSFORM_HEIGHTMAX);
+
+ /* Don't give argv[0], it's normally some horrible libtool string: */
+ cp = safecat(command, sizeof command, cp, "pngvalid");
+
+ /* Default to error on warning: */
+ pm.this.treat_warnings_as_errors = 1;
+
+ /* Store the test gammas */
+ pm.gammas = gammas;
+ pm.ngammas = (sizeof gammas) / (sizeof gammas[0]);
+ pm.ngamma_tests = 0; /* default to off */
+
+ /* And the test encodings */
+ pm.encodings = test_encodings;
+ pm.nencodings = (sizeof test_encodings) / (sizeof test_encodings[0]);
+
+ pm.sbitlow = 8U; /* because libpng doesn't do sBIT below 8! */
+ /* The following allows results to pass if they correspond to anything in the
+ * transformed range [input-.5,input+.5]; this is is required because of the
+ * way libpng treates the 16_TO_8 flag when building the gamma tables.
+ *
+ * TODO: review this
+ */
+ pm.use_input_precision_16to8 = 1U;
+
+ /* Some default values (set the behavior for 'make check' here).
+ * These values simply control the maximum error permitted in the gamma
+ * transformations. The practial limits for human perception are described
+ * below (the setting for maxpc16), however for 8 bit encodings it isn't
+ * possible to meet the accepted capabilities of human vision - i.e. 8 bit
+ * images can never be good enough, regardless of encoding.
+ */
+ pm.maxout8 = .1; /* Arithmetic error in *encoded* value */
+ pm.maxabs8 = .00005; /* 1/20000 */
+ pm.maxcalc8 = .004; /* +/-1 in 8 bits for compose errors */
+ pm.maxpc8 = .499; /* I.e., .499% fractional error */
+ pm.maxout16 = .499; /* Error in *encoded* value */
+ pm.maxabs16 = .00005;/* 1/20000 */
+ pm.maxcalc16 =.000015;/* +/-1 in 16 bits for compose errors */
+
+ /* NOTE: this is a reasonable perceptual limit. We assume that humans can
+ * perceive light level differences of 1% over a 100:1 range, so we need to
+ * maintain 1 in 10000 accuracy (in linear light space), which is what the
+ * following guarantees. It also allows significantly higher errors at
+ * higher 16 bit values, which is important for performance. The actual
+ * maximum 16 bit error is about +/-1.9 in the fixed point implementation but
+ * this is only allowed for values >38149 by the following:
+ */
+ pm.maxpc16 = .005; /* I.e., 1/200% - 1/20000 */
+
+ /* Now parse the command line options. */
+ while (--argc >= 1)
+ {
+ int catmore = 0; /* Set if the argument has an argument. */
+
+ /* Record each argument for posterity: */
+ cp = safecat(command, sizeof command, cp, " ");
+ cp = safecat(command, sizeof command, cp, *++argv);
+
+ if (strcmp(*argv, "-v") == 0)
+ pm.this.verbose = 1;
+
+ else if (strcmp(*argv, "-l") == 0)
+ pm.log = 1;
+
+ else if (strcmp(*argv, "-q") == 0)
+ summary = pm.this.verbose = pm.log = 0;
+
+ else if (strcmp(*argv, "-w") == 0)
+ pm.this.treat_warnings_as_errors = 0;
+
+ else if (strcmp(*argv, "--speed") == 0)
+ pm.this.speed = 1, pm.ngamma_tests = pm.ngammas, pm.test_standard = 0,
+ summary = 0;
+
+ else if (strcmp(*argv, "--memory") == 0)
+ memstats = 1;
+
+ else if (strcmp(*argv, "--size") == 0)
+ pm.test_size = 1;
+
+ else if (strcmp(*argv, "--nosize") == 0)
+ pm.test_size = 0;
+
+ else if (strcmp(*argv, "--standard") == 0)
+ pm.test_standard = 1;
+
+ else if (strcmp(*argv, "--nostandard") == 0)
+ pm.test_standard = 0;
+
+ else if (strcmp(*argv, "--transform") == 0)
+ pm.test_transform = 1;
+
+ else if (strcmp(*argv, "--notransform") == 0)
+ pm.test_transform = 0;
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+ else if (strncmp(*argv, "--transform-disable=",
+ sizeof "--transform-disable") == 0)
+ {
+ pm.test_transform = 1;
+ transform_disable(*argv + sizeof "--transform-disable");
+ }
+
+ else if (strncmp(*argv, "--transform-enable=",
+ sizeof "--transform-enable") == 0)
+ {
+ pm.test_transform = 1;
+ transform_enable(*argv + sizeof "--transform-enable");
+ }
+#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
+
+ else if (strcmp(*argv, "--gamma") == 0)
+ {
+ /* Just do two gamma tests here (2.2 and linear) for speed: */
+ pm.ngamma_tests = 2U;
+ pm.test_gamma_threshold = 1;
+ pm.test_gamma_transform = 1;
+ pm.test_gamma_sbit = 1;
+ pm.test_gamma_scale16 = 1;
+ pm.test_gamma_background = 1;
+ pm.test_gamma_alpha_mode = 1;
+ }
+
+ else if (strcmp(*argv, "--nogamma") == 0)
+ pm.ngamma_tests = 0;
+
+ else if (strcmp(*argv, "--gamma-threshold") == 0)
+ pm.ngamma_tests = 2U, pm.test_gamma_threshold = 1;
+
+ else if (strcmp(*argv, "--nogamma-threshold") == 0)
+ pm.test_gamma_threshold = 0;
+
+ else if (strcmp(*argv, "--gamma-transform") == 0)
+ pm.ngamma_tests = 2U, pm.test_gamma_transform = 1;
+
+ else if (strcmp(*argv, "--nogamma-transform") == 0)
+ pm.test_gamma_transform = 0;
+
+ else if (strcmp(*argv, "--gamma-sbit") == 0)
+ pm.ngamma_tests = 2U, pm.test_gamma_sbit = 1;
+
+ else if (strcmp(*argv, "--nogamma-sbit") == 0)
+ pm.test_gamma_sbit = 0;
+
+ else if (strcmp(*argv, "--gamma-16-to-8") == 0)
+ pm.ngamma_tests = 2U, pm.test_gamma_scale16 = 1;
+
+ else if (strcmp(*argv, "--nogamma-16-to-8") == 0)
+ pm.test_gamma_scale16 = 0;
+
+ else if (strcmp(*argv, "--gamma-background") == 0)
+ pm.ngamma_tests = 2U, pm.test_gamma_background = 1;
+
+ else if (strcmp(*argv, "--nogamma-background") == 0)
+ pm.test_gamma_background = 0;
+
+ else if (strcmp(*argv, "--gamma-alpha-mode") == 0)
+ pm.ngamma_tests = 2U, pm.test_gamma_alpha_mode = 1;
+
+ else if (strcmp(*argv, "--nogamma-alpha-mode") == 0)
+ pm.test_gamma_alpha_mode = 0;
+
+ else if (strcmp(*argv, "--expand16") == 0)
+ pm.test_gamma_expand16 = 1;
+
+ else if (strcmp(*argv, "--noexpand16") == 0)
+ pm.test_gamma_expand16 = 0;
+
+ else if (strcmp(*argv, "--more-gammas") == 0)
+ pm.ngamma_tests = 3U;
+
+ else if (strcmp(*argv, "--all-gammas") == 0)
+ pm.ngamma_tests = pm.ngammas;
+
+ else if (strcmp(*argv, "--progressive-read") == 0)
+ pm.this.progressive = 1;
+
+ else if (strcmp(*argv, "--use-update-info") == 0)
+ ++pm.use_update_info; /* Can call multiple times */
+
+ else if (strcmp(*argv, "--interlace") == 0)
+ pm.interlace_type = PNG_INTERLACE_ADAM7;
+
+ else if (strcmp(*argv, "--use-input-precision") == 0)
+ pm.use_input_precision = 1;
+
+ else if (strcmp(*argv, "--calculations-use-input-precision") == 0)
+ pm.calculations_use_input_precision = 1;
+
+ else if (strcmp(*argv, "--assume-16-bit-calculations") == 0)
+ pm.assume_16_bit_calculations = 1;
+
+ else if (strcmp(*argv, "--calculations-follow-bit-depth") == 0)
+ pm.calculations_use_input_precision =
+ pm.assume_16_bit_calculations = 0;
+
+ else if (strcmp(*argv, "--exhaustive") == 0)
+ pm.test_exhaustive = 1;
+
+ else if (argc > 1 && strcmp(*argv, "--sbitlow") == 0)
+ --argc, pm.sbitlow = (png_byte)atoi(*++argv), catmore = 1;
+
+ else if (argc > 1 && strcmp(*argv, "--touch") == 0)
+ --argc, touch = *++argv, catmore = 1;
+
+ else if (argc > 1 && strncmp(*argv, "--max", 5) == 0)
+ {
+ --argc;
+
+ if (strcmp(5+*argv, "abs8") == 0)
+ pm.maxabs8 = atof(*++argv);
+
+ else if (strcmp(5+*argv, "abs16") == 0)
+ pm.maxabs16 = atof(*++argv);
+
+ else if (strcmp(5+*argv, "calc8") == 0)
+ pm.maxcalc8 = atof(*++argv);
+
+ else if (strcmp(5+*argv, "calc16") == 0)
+ pm.maxcalc16 = atof(*++argv);
+
+ else if (strcmp(5+*argv, "out8") == 0)
+ pm.maxout8 = atof(*++argv);
+
+ else if (strcmp(5+*argv, "out16") == 0)
+ pm.maxout16 = atof(*++argv);
+
+ else if (strcmp(5+*argv, "pc8") == 0)
+ pm.maxpc8 = atof(*++argv);
+
+ else if (strcmp(5+*argv, "pc16") == 0)
+ pm.maxpc16 = atof(*++argv);
+
+ else
+ {
+ fprintf(stderr, "pngvalid: %s: unknown 'max' option\n", *argv);
+ exit(1);
+ }
+
+ catmore = 1;
+ }
+
+ else if (strcmp(*argv, "--log8") == 0)
+ --argc, pm.log8 = atof(*++argv), catmore = 1;
+
+ else if (strcmp(*argv, "--log16") == 0)
+ --argc, pm.log16 = atof(*++argv), catmore = 1;
+
+ else
+ {
+ fprintf(stderr, "pngvalid: %s: unknown argument\n", *argv);
+ exit(1);
+ }
+
+ if (catmore) /* consumed an extra *argv */
+ {
+ cp = safecat(command, sizeof command, cp, " ");
+ cp = safecat(command, sizeof command, cp, *argv);
+ }
+ }
+
+ /* If pngvalid is run with no arguments default to a reasonable set of the
+ * tests.
+ */
+ if (pm.test_standard == 0 && pm.test_size == 0 && pm.test_transform == 0 &&
+ pm.ngamma_tests == 0)
+ {
+ /* Make this do all the tests done in the test shell scripts with the same
+ * parameters, where possible. The limitation is that all the progressive
+ * read and interlace stuff has to be done in separate runs, so only the
+ * basic 'standard' and 'size' tests are done.
+ */
+ pm.test_standard = 1;
+ pm.test_size = 1;
+ pm.test_transform = 1;
+ pm.ngamma_tests = 2U;
+ }
+
+ if (pm.ngamma_tests > 0 &&
+ pm.test_gamma_threshold == 0 && pm.test_gamma_transform == 0 &&
+ pm.test_gamma_sbit == 0 && pm.test_gamma_scale16 == 0 &&
+ pm.test_gamma_background == 0 && pm.test_gamma_alpha_mode == 0)
+ {
+ pm.test_gamma_threshold = 1;
+ pm.test_gamma_transform = 1;
+ pm.test_gamma_sbit = 1;
+ pm.test_gamma_scale16 = 1;
+ pm.test_gamma_background = 1;
+ pm.test_gamma_alpha_mode = 1;
+ }
+
+ else if (pm.ngamma_tests == 0)
+ {
+ /* Nothing to test so turn everything off: */
+ pm.test_gamma_threshold = 0;
+ pm.test_gamma_transform = 0;
+ pm.test_gamma_sbit = 0;
+ pm.test_gamma_scale16 = 0;
+ pm.test_gamma_background = 0;
+ pm.test_gamma_alpha_mode = 0;
+ }
+
+ Try
+ {
+ /* Make useful base images */
+ make_transform_images(&pm.this);
+
+ /* Perform the standard and gamma tests. */
+ if (pm.test_standard)
+ {
+ perform_interlace_macro_validation();
+ perform_formatting_test(&pm.this);
+ perform_standard_test(&pm);
+ perform_error_test(&pm);
+ }
+
+ /* Various oddly sized images: */
+ if (pm.test_size)
+ {
+ make_size_images(&pm.this);
+ perform_size_test(&pm);
+ }
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+ /* Combinatorial transforms: */
+ if (pm.test_transform)
+ perform_transform_test(&pm);
+#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (pm.ngamma_tests > 0)
+ perform_gamma_test(&pm, summary);
+#endif
+ }
+
+ Catch_anonymous
+ {
+ fprintf(stderr, "pngvalid: test aborted (probably failed in cleanup)\n");
+ if (!pm.this.verbose)
+ {
+ if (pm.this.error[0] != 0)
+ fprintf(stderr, "pngvalid: first error: %s\n", pm.this.error);
+
+ fprintf(stderr, "pngvalid: run with -v to see what happened\n");
+ }
+ exit(1);
+ }
+
+ if (summary)
+ {
+ printf("%s: %s (%s point arithmetic)\n",
+ (pm.this.nerrors || (pm.this.treat_warnings_as_errors &&
+ pm.this.nwarnings)) ? "FAIL" : "PASS",
+ command,
+#if defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) || PNG_LIBPNG_VER < 10500
+ "floating"
+#else
+ "fixed"
+#endif
+ );
+ }
+
+ if (memstats)
+ {
+ printf("Allocated memory statistics (in bytes):\n"
+ "\tread %lu maximum single, %lu peak, %lu total\n"
+ "\twrite %lu maximum single, %lu peak, %lu total\n",
+ (unsigned long)pm.this.read_memory_pool.max_max,
+ (unsigned long)pm.this.read_memory_pool.max_limit,
+ (unsigned long)pm.this.read_memory_pool.max_total,
+ (unsigned long)pm.this.write_memory_pool.max_max,
+ (unsigned long)pm.this.write_memory_pool.max_limit,
+ (unsigned long)pm.this.write_memory_pool.max_total);
+ }
+
+ /* Do this here to provoke memory corruption errors in memory not directly
+ * allocated by libpng - not a complete test, but better than nothing.
+ */
+ store_delete(&pm.this);
+
+ /* Error exit if there are any errors, and maybe if there are any
+ * warnings.
+ */
+ if (pm.this.nerrors || (pm.this.treat_warnings_as_errors &&
+ pm.this.nwarnings))
+ {
+ if (!pm.this.verbose)
+ fprintf(stderr, "pngvalid: %s\n", pm.this.error);
+
+ fprintf(stderr, "pngvalid: %d errors, %d warnings\n", pm.this.nerrors,
+ pm.this.nwarnings);
+
+ exit(1);
+ }
+
+ /* Success case. */
+ if (touch != NULL)
+ {
+ FILE *fsuccess = fopen(touch, "wt");
+
+ if (fsuccess != NULL)
+ {
+ int error = 0;
+ fprintf(fsuccess, "PNG validation succeeded\n");
+ fflush(fsuccess);
+ error = ferror(fsuccess);
+
+ if (fclose(fsuccess) || error)
+ {
+ fprintf(stderr, "%s: write failed\n", touch);
+ exit(1);
+ }
+ }
+ }
+
+ return 0;
+}
diff --git a/contrib/pngminim/README b/contrib/pngminim/README
new file mode 100644
index 0000000..51d5a3c
--- /dev/null
+++ b/contrib/pngminim/README
@@ -0,0 +1,4 @@
+This demonstrates the use of PNG_USER_CONFIG, pngusr.h and pngusr.dfa
+to build minimal decoder, encoder, and progressive reader applications.
+
+See the individual README and pngusr.dfa files for more explanation.
diff --git a/contrib/pngminim/decoder/README b/contrib/pngminim/decoder/README
index a656e0b..fa979fc 100644
--- a/contrib/pngminim/decoder/README
+++ b/contrib/pngminim/decoder/README
@@ -1,9 +1,10 @@
-This demonstrates the use of PNG_USER_CONFIG and pngusr.h
+This demonstrates the use of PNG_USER_CONFIG, pngusr.h and pngusr.dfa
-To build a minimal read-only decoder with embedded libpng and zlib, run
+The makefile builds a minimal read-only decoder with embedded libpng
+and zlib.
- gather.sh # to collect needed files from pngminus, libpng, and zlib
- make
+Specify the location of the zlib source (1.2.1 or later) as ZLIBSRC
+on the make command line.
If you prefer to use the shared libraries, go to contrib/pngminus
-and build the png2pnm application there.
+and build the png2pnm application there.
diff --git a/contrib/pngminim/decoder/makefile b/contrib/pngminim/decoder/makefile
index 59e9646..e10e122 100644
--- a/contrib/pngminim/decoder/makefile
+++ b/contrib/pngminim/decoder/makefile
@@ -5,27 +5,82 @@
CC=gcc
LD=$(CC)
-RM=rm -f
+# If awk fails try
+# make AWK=nawk
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
- -DdeflateParams\(a,b,c\)=Z_OK -I. -O1
+# If cpp fails try
+# make CPP=/lib/cpp
+
+RM=rm -f
+COPY=cp
+
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. -O1
C=.c
O=.o
L=.a
E=
-ZOBJS = adler32$(O) crc32$(O) \
- infback$(O) inffast$(O) inflate$(O) inftrees$(O) \
- trees$(O) uncompr$(O) zutil$(O)
+# Where to find the source code:
+PNGSRC =../../..
+ZLIBSRC=$(PNGSRC)/../zlib
+PROGSRC=$(PNGSRC)/contrib/pngminus
-OBJS = pngm2pnm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
+# Zlib (minimal inflate requirements - crc32 is used by libpng)
+# zutil can be eliminated if you provide your own zcalloc and zcfree
+ZSRCS = adler32$(C) crc32$(C) \
+ inffast$(C) inflate$(C) inftrees$(C) \
+ zutil$(C)
+
+# Standard headers
+ZH = zlib.h crc32.h inffast.h inffixed.h \
+ inflate.h inftrees.h zutil.h
+
+# Machine generated headers
+ZCONF = zconf.h
+
+# Headers callers use
+ZINC = zlib.h $(ZCONF)
+
+# Headers the Zlib source uses
+ZHDRS = $(ZH) $(ZCONF)
+
+ZOBJS = adler32$(O) crc32$(O) \
+ inffast$(O) inflate$(O) inftrees$(O) \
+ zutil$(O)
+
+# libpng
+PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
+ pngread$(C) pngrio$(C) pngrtran$(C) pngrutil$(C) \
+ pngset$(C) pngtrans$(C)
+
+# Standard headers
+PNGH =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
+
+# Machine generated headers
+PNGCONF=pnglibconf.h
+
+# Headers callers use
+PNGINC= png.h pngconf.h pngusr.h $(PNGCONF)
+
+# Headers the PNG library uses
+PNGHDRS=$(PNGH) $(PNGCONF) pngusr.h
+
+PNGOBJS=png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
- pngset$(O) pngtrans$(O) $(ZOBJS)
+ pngset$(O) pngtrans$(O)
+
+PROGSRCS= pngm2pnm$(C)
+PROGHDRS=
+PROGDOCS=
+PROGOBJS= pngm2pnm$(O)
+
+OBJS = $(PROGOBJS) $(PNGOBJS) $(ZOBJS)
# implicit make rules -------------------------------------------------------
-.c$(O): png.h pngconf.h pngpriv.h pngusr.h zlib.h
+# note: dependencies do not work on implicit rule lines
+.c$(O):
$(CC) -c $(CFLAGS) $<
# dependencies
@@ -35,9 +90,61 @@
pngm2pnm$(E): $(OBJS)
$(LD) -o pngm2pnm$(E) $(OBJS)
+# The DFA_XTRA setting turns all libpng options off then
+# turns on those required for this minimal build.
+# The CPP_FLAGS setting causes pngusr.h to be included in
+# both the build of pnglibconf.h and, subsequently, when
+# building libpng itself.
+$(PNGCONF): $(PNGSRC)/scripts/pnglibconf.mak\
+ $(PNGSRC)/scripts/pnglibconf.dfa \
+ $(PNGSRC)/scripts/options.awk pngusr.h pngusr.dfa
+ $(RM) pnglibconf.h pnglibconf.dfn
+ $(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
+ srcdir=$(PNGSRC) CPPFLAGS="-DPNG_USER_CONFIG"\
+ DFA_XTRA="pngusr.dfa" $@
+
clean:
+ $(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
+ srcdir=$(PNGSRC) clean
$(RM) pngm2pnm$(O)
$(RM) pngm2pnm$(E)
$(RM) $(OBJS)
+# distclean also removes the copied source and headers
+distclean: clean
+ $(RM) -r scripts # historical reasons
+ $(RM) $(PNGSRCS) $(PNGH)
+ $(RM) $(ZSRCS) $(ZH) $(ZCONF)
+ $(RM) $(PROGSRCS) $(PROGHDRS) $(PROGDOCS)
+
+# Header file dependencies:
+$(PROGOBJS): $(PROGHDRS) $(PNGINC) $(ZINC)
+$(PNGOBJS): $(PNGHDRS) $(ZINC)
+$(ZOBJS): $(ZHDRS)
+
+# Gather the source code from the respective directories
+$(PNGSRCS) $(PNGH): $(PNGSRC)/$@
+ $(RM) $@
+ $(COPY) $(PNGSRC)/$@ $@
+
+# No dependency on the ZLIBSRC target so that it only needs
+# to be specified once.
+$(ZSRCS) $(ZH):
+ $(RM) $@
+ $(COPY) $(ZLIBSRC)/$@ $@
+
+# The unconfigured zconf.h varies in name according to the
+# zlib release
+$(ZCONF):
+ $(RM) $@
+ @for f in zconf.h.in zconf.in.h zconf.h; do\
+ test -r $(ZLIBSRC)/$$f &&\
+ echo $(COPY) $(ZLIBSRC)/$$f $@ &&\
+ $(COPY) $(ZLIBSRC)/$$f $@ && exit 0;\
+ done; echo copy: $(ZLIBSRC)/zconf.h not found; exit 1
+
+pngm2pnm.c: $(PROGSRC)/png2pnm.c
+ $(RM) $@
+ $(COPY) $(PROGSRC)/png2pnm.c $@
+
# End of makefile for pngm2pnm
diff --git a/contrib/pngminim/decoder/pngusr.dfa b/contrib/pngminim/decoder/pngusr.dfa
new file mode 100644
index 0000000..70d528b
--- /dev/null
+++ b/contrib/pngminim/decoder/pngusr.dfa
@@ -0,0 +1,39 @@
+# pngminim/decoder/pngusr.dfa
+#
+# Copyright (c) 2010-2011 Glenn Randers-Pehrson
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# First all the build options off:
+
+everything = off
+
+# All that is required is some read code. This example switches
+# on the sequential read code (see ../preader for a progressive
+# read example).
+
+option SEQUENTIAL_READ on
+
+# You must choose fixed or floating point arithmetic:
+# option FLOATING_POINT on
+
+option FIXED_POINT on
+
+# You must chose the internal fixed point implementation or to
+# use the system floating point. The latter is considerably
+# smaller (by about 1kbyte on an x86 system):
+# option FLOATING_ARITHMETIC on
+
+option FLOATING_ARITHMETIC off
+
+# Your program will probably need other options. The example
+# program here, pngm2pnm, requires the following. Take a look
+# at pnglibconf.h to find out the full set of what has to be
+# enabled to make the following work.
+
+option SETJMP on
+option STDIO on
+option READ_EXPAND on
+option READ_STRIP_16_TO_8 on
diff --git a/contrib/pngminim/decoder/pngusr.h b/contrib/pngminim/decoder/pngusr.h
index 7b2c0c5..9d9c50c 100644
--- a/contrib/pngminim/decoder/pngusr.h
+++ b/contrib/pngminim/decoder/pngusr.h
@@ -1,6 +1,6 @@
/* minrdpngconf.h: headers to make a minimal png-read-only library
*
- * Copyright (c) 2007, 2009 Glenn Randers-Pehrson
+ * Copyright (c) 2007, 2010-2011 Glenn Randers-Pehrson
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -12,64 +12,13 @@
#ifndef MINRDPNGCONF_H
#define MINRDPNGCONF_H
+/* To include pngusr.h set -DPNG_USER_CONFIG in CPPFLAGS */
+
+/* List options to turn off features of the build that do not
+ * affect the API (so are not recorded in pnglibconf.h)
+ */
+
#define PNG_NO_WARNINGS
-#define png_warning(s1,s2) ""
-#define png_chunk_warning(s1,s2) ""
-#define PNG_NO_ERROR_TEXT
-#define png_error(s1,s2) png_err(s1)
-#define png_chunk_error(s1,s2) png_err(s1)
-
-#define PNG_NO_READ_BGR
-#define PNG_NO_READ_GAMMA
-#define PNG_NO_READ_BACKGROUND
-#define PNG_NO_READ_QUANTIZE
-#define PNG_NO_READ_INVERT
-#define PNG_NO_READ_SHIFT
-#define PNG_NO_READ_PACK
-#define PNG_NO_READ_PACKSWAP
-#define PNG_NO_READ_FILLER
-#define PNG_NO_READ_SWAP
-#define PNG_NO_READ_SWAP_ALPHA
-#define PNG_NO_READ_INVERT_ALPHA
-#define PNG_NO_READ_RGB_TO_GRAY
-#define PNG_NO_READ_USER_TRANSFORM
-#define PNG_NO_READ_bKGD
-#define PNG_NO_READ_cHRM
-#define PNG_NO_READ_gAMA
-#define PNG_NO_READ_hIST
-#define PNG_NO_READ_iCCP
-#define PNG_NO_READ_oFFs
-#define PNG_NO_READ_pCAL
-#define PNG_NO_READ_pHYs
-#define PNG_NO_READ_sBIT
-#define PNG_NO_READ_sCAL
-#define PNG_NO_READ_sPLT
-#define PNG_NO_READ_sRGB
-#define PNG_NO_READ_TEXT
-#define PNG_NO_READ_tIME
-#define PNG_NO_READ_UNKNOWN_CHUNKS
-#define PNG_NO_READ_USER_CHUNKS
-#define PNG_NO_READ_EMPTY_PLTE
-#define PNG_NO_READ_OPT_PLTE
-#define PNG_NO_READ_STRIP_ALPHA
-
-#define PNG_NO_WRITE_SUPPORTED
-
-#define PNG_NO_INFO_IMAGE
-#define PNG_NO_IO_STATE
-#define PNG_NO_USER_MEM
-#define PNG_NO_FIXED_POINT_SUPPORTED
-#define PNG_NO_MNG_FEATURES
-#define PNG_NO_USER_TRANSFORM_PTR
-#define PNG_NO_HANDLE_AS_UNKNOWN
-#define PNG_NO_CONSOLE_IO
-#define PNG_NO_ZALLOC_ZERO
-#define PNG_NO_ERROR_NUMBERS
-#define PNG_NO_EASY_ACCESS
-#define PNG_NO_PROGRESSIVE_READ
-#define PNG_NO_USER_LIMITS
-#define PNG_NO_SET_USER_LIMITS
-#define PNG_NO_TIME_RFC1123
+#define PNG_ALIGN_TYPE PNG_ALIGN_NONE
#endif /* MINRDPNGCONF_H */
-
diff --git a/contrib/pngminim/encoder/README b/contrib/pngminim/encoder/README
index 2285544..ff9aa45 100644
--- a/contrib/pngminim/encoder/README
+++ b/contrib/pngminim/encoder/README
@@ -1,9 +1,10 @@
This demonstrates the use of PNG_USER_CONFIG and pngusr.h
-To build a minimal write-only decoder with embedded libpng and zlib, run
+The makefile builds a minimal write-only decoder with embedded libpng
+and zlib.
- gather.sh # to collect needed files from pngminus, libpng, and zlib
- make
-
+Specify the location of the zlib source (1.2.1 or later) as ZLIBSRC
+on the make command line.
+
If you prefer to use the shared libraries, go to contrib/pngminus
-and build the pnm2png application there.
+and build the pnm2png application there.
diff --git a/contrib/pngminim/encoder/makefile b/contrib/pngminim/encoder/makefile
index f0a7642..d6f39e2 100644
--- a/contrib/pngminim/encoder/makefile
+++ b/contrib/pngminim/encoder/makefile
@@ -5,7 +5,14 @@
CC=gcc
LD=$(CC)
+# If awk fails try
+# make AWK=nawk
+
+# If cpp fails try
+# make CPP=/lib/cpp
+
RM=rm -f
+COPY=cp
CFLAGS=-DPNG_USER_CONFIG -DNO_GZIP -I. -O1
@@ -14,16 +21,65 @@
L=.a
E=
+# Where to find the source code:
+PNGSRC =../../..
+ZLIBSRC=$(PNGSRC)/../zlib
+PROGSRC=$(PNGSRC)/contrib/pngminus
+
+# Zlib
+ZSRCS = adler32$(C) compress$(C) crc32$(C) deflate$(C) \
+ trees$(C) zutil$(C)
+
+# Standard headers
+#ZH = zlib.h crc32.h deflate.h trees.h zutil.h
+ZH = zlib.h crc32.h deflate.h trees.h zutil.h
+
+# Machine generated headers
+ZCONF = zconf.h
+
+# Headers callers use
+ZINC = zlib.h $(ZCONF)
+
+# Headers the Zlib source uses
+ZHDRS = $(ZH) $(ZCONF)
+
+# compress is not required; it is needed to link the zlib
+# code because deflate defines an unused API function deflateBound
+# which itself calls compressBound from compress.
ZOBJS = adler32$(O) compress$(O) crc32$(O) deflate$(O) \
trees$(O) zutil$(O)
-OBJS = pnm2pngm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
+# libpng
+PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
+ pngset$(C) pngtrans$(C) pngwio$(C) pngwrite$(C) \
+ pngwtran$(C) pngwutil$(C)
+
+# Standard headers
+PNGH =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
+
+# Machine generated headers
+PNGCONF=pnglibconf.h
+
+# Headers callers use
+PNGINC= png.h pngconf.h pngusr.h $(PNGCONF)
+
+# Headers the PNG library uses
+PNGHDRS=$(PNGH) $(PNGCONF) pngusr.h
+
+PNGOBJS=png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
pngset$(O) pngtrans$(O) pngwio$(O) pngwrite$(O) \
- pngwtran$(O) pngwutil$(O) $(ZOBJS)
+ pngwtran$(O) pngwutil$(O)
+
+PROGSRCS= pnm2pngm$(C)
+PROGHDRS=
+PROGDOCS=
+PROGOBJS= pnm2pngm$(O)
+
+OBJS = $(PROGOBJS) $(PNGOBJS) $(ZOBJS)
# implicit make rules -------------------------------------------------------
-.c$(O): png.h pngconf.h pngpriv.h pngusr.h zlib.h
+.c$(O):
$(CC) -c $(CFLAGS) $<
# dependencies
@@ -33,9 +89,61 @@
pnm2pngm$(E): $(OBJS)
$(LD) -o pnm2pngm$(E) $(OBJS)
+# The DFA_XTRA setting turns all libpng options off then
+# turns on those required for this minimal build.
+# The CPP_FLAGS setting causes pngusr.h to be included in
+# both the build of pnglibconf.h and, subsequently, when
+# building libpng itself.
+$(PNGCONF): $(PNGSRC)/scripts/pnglibconf.mak\
+ $(PNGSRC)/scripts/pnglibconf.dfa \
+ $(PNGSRC)/scripts/options.awk pngusr.h pngusr.dfa
+ $(RM) pnglibconf.h pnglibconf.dfn
+ $(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
+ srcdir=$(PNGSRC) CPPFLAGS="-DPNG_USER_CONFIG"\
+ DFA_XTRA="pngusr.dfa" $@
+
clean:
+ $(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
+ srcdir=$(PNGSRC) clean
$(RM) pnm2pngm$(O)
$(RM) pnm2pngm$(E)
$(RM) $(OBJS)
+# distclean also removes the copied source and headers
+distclean: clean
+ $(RM) -r scripts # historical reasons
+ $(RM) $(PNGSRCS) $(PNGH)
+ $(RM) $(ZSRCS) $(ZH) $(ZCONF)
+ $(RM) $(PROGSRCS) $(PROGHDRS) $(PROGDOCS)
+
+# Header file dependencies:
+$(PROGOBJS): $(PROGHDRS) $(PNGINC) $(ZINC)
+$(PNGOBJS): $(PNGHDRS) $(ZINC)
+$(ZOBJS): $(ZHDRS)
+
+# Gather the source code from the respective directories
+$(PNGSRCS) $(PNGH): $(PNGSRC)/$@
+ $(RM) $@
+ $(COPY) $(PNGSRC)/$@ $@
+
+# No dependency on the ZLIBSRC target so that it only needs
+# to be specified once.
+$(ZSRCS) $(ZH):
+ $(RM) $@
+ $(COPY) $(ZLIBSRC)/$@ $@
+
+# The unconfigured zconf.h varies in name according to the
+# zlib release
+$(ZCONF):
+ $(RM) $@
+ @for f in zconf.h.in zconf.in.h zconf.h; do\
+ test -r $(ZLIBSRC)/$$f &&\
+ echo $(COPY) $(ZLIBSRC)/$$f $@ &&\
+ $(COPY) $(ZLIBSRC)/$$f $@ && exit 0;\
+ done; echo copy: $(ZLIBSRC)/zconf.h not found; exit 1
+
+pnm2pngm.c: $(PROGSRC)/pnm2png.c
+ $(RM) $@
+ $(COPY) $(PROGSRC)/pnm2png.c $@
+
# End of makefile for pnm2pngm
diff --git a/contrib/pngminim/encoder/pngusr.dfa b/contrib/pngminim/encoder/pngusr.dfa
new file mode 100644
index 0000000..ee88443
--- /dev/null
+++ b/contrib/pngminim/encoder/pngusr.dfa
@@ -0,0 +1,35 @@
+# pngminim/encoder/pngusr.dfa
+#
+# Copyright (c) 2010-2011 Glenn Randers-Pehrson
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# First all the build options off:
+
+everything = off
+
+# Switch on the write code - this makes a minimalist encoder
+
+option WRITE on
+
+# You must choose fixed or floating point arithmetic:
+# option FLOATING_POINT on
+
+option FIXED_POINT on
+
+# You must chose the internal fixed point implementation or to
+# use the system floating point. The latter is considerably
+# smaller (by about 1kbyte on an x86 system):
+# option FLOATING_ARITHMETIC on
+
+option FLOATING_ARITHMETIC off
+
+# Your program will probably need other options. The example
+# program here, pnm2pngm, requires the following. Take a look
+# at pnglibconf.h to find out the full set of what has to be
+# enabled to make the following work.
+
+option SETJMP on
+option STDIO on
diff --git a/contrib/pngminim/encoder/pngusr.h b/contrib/pngminim/encoder/pngusr.h
index 458deb4..2033aad 100644
--- a/contrib/pngminim/encoder/pngusr.h
+++ b/contrib/pngminim/encoder/pngusr.h
@@ -1,6 +1,6 @@
/* minwrpngconf.h: headers to make a minimal png-write-only library
*
- * Copyright (c) 2007, 2009 Glenn Randers-Pehrson
+ * Copyright (c) 2007, 2010-2011 Glenn Randers-Pehrson
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -12,64 +12,13 @@
#ifndef MINWRPNGCONF_H
#define MINWRPNGCONF_H
-#define PNG_NO_READ_SUPPORTED
+/* To include pngusr.h set -DPNG_USER_CONFIG in CPPFLAGS */
+
+/* List options to turn off features of the build that do not
+ * affect the API (so are not recorded in pnglibconf.h)
+ */
#define PNG_NO_WARNINGS
-#define png_warning(s1,s2) ""
-#define png_chunk_warning(s1,s2) ""
-#define PNG_NO_ERROR_TEXT
-#define png_error(s1,s2) png_err(s1)
-#define png_chunk_error(s1,s2) png_err(s1)
-
-#define PNG_NO_WRITE_BACKGROUND
-#define PNG_NO_WRITE_BGR
-#define PNG_NO_WRITE_QUANTIZE
-#define PNG_NO_WRITE_INVERT
-#define PNG_NO_WRITE_SHIFT
-#define PNG_NO_WRITE_PACK
-#define PNG_NO_WRITE_PACKSWAP
-#define PNG_NO_WRITE_FILLER
-#define PNG_NO_WRITE_SWAP
-#define PNG_NO_WRITE_SWAP_ALPHA
-#define PNG_NO_WRITE_INVERT_ALPHA
-#define PNG_NO_WRITE_RGB_TO_GRAY
-#define PNG_NO_WRITE_USER_TRANSFORM
-#define PNG_NO_WRITE_bKGD
-#define PNG_NO_WRITE_cHRM
-#define PNG_NO_WRITE_gAMA
-#define PNG_NO_WRITE_hIST
-#define PNG_NO_WRITE_iCCP
-#define PNG_NO_WRITE_oFFs
-#define PNG_NO_WRITE_pCAL
-#define PNG_NO_WRITE_pHYs
-#define PNG_NO_WRITE_sBIT
-#define PNG_NO_WRITE_sCAL
-#define PNG_NO_WRITE_sPLT
-#define PNG_NO_WRITE_sRGB
-#define PNG_NO_WRITE_TEXT
-#define PNG_NO_WRITE_tIME
-#define PNG_NO_WRITE_UNKNOWN_CHUNKS
-#define PNG_NO_WRITE_USER_CHUNKS
-#define PNG_NO_WRITE_EMPTY_PLTE
-#define PNG_NO_WRITE_OPT_PLTE
-#define PNG_NO_WRITE_FILTER
-#define PNG_NO_WRITE_WEIGHTED_FILTER
-#define PNG_NO_WRITE_INTERLACING_SUPPORTED
-#define PNG_NO_WRITE_FLUSH
-
-#define PNG_NO_INFO_IMAGE
-#define PNG_NO_IO_STATE
-#define PNG_NO_USER_MEM
-#define PNG_NO_FIXED_POINT_SUPPORTED
-#define PNG_NO_MNG_FEATURES
-#define PNG_NO_USER_TRANSFORM_PTR
-#define PNG_NO_HANDLE_AS_UNKNOWN
-#define PNG_NO_CONSOLE_IO
-#define PNG_NO_ZALLOC_ZERO
-#define PNG_NO_ERROR_NUMBERS
-#define PNG_NO_EASY_ACCESS
-#define PNG_NO_USER_LIMITS
-#define PNG_NO_SET_USER_LIMITS
-#define PNG_NO_TIME_RFC1123
+#define PNG_ALIGN_TYPE PNG_ALIGN_NONE
#endif /* MINWRPNGCONF_H */
diff --git a/contrib/pngminim/preader/README b/contrib/pngminim/preader/README
index 377d641..faa8356 100644
--- a/contrib/pngminim/preader/README
+++ b/contrib/pngminim/preader/README
@@ -1,14 +1,15 @@
This demonstrates the use of PNG_USER_CONFIG and pngusr.h
-To build a minimal read-only progressive decoder embedded libpng and
-zlib and with your system's X library, run
+The makefile builds a minimal read-only progressive decoder with
+embedded libpng, zlib and your system's X library.
- gather.sh # to collect needed files from gregbook, libpng, and zlib
+Specify the location of the zlib source (1.2.1 or later) as ZLIBSRC
+on the make command line.
Edit makefile if required, to find your X library and include files,
then
-
- make
-
+
+ make ZLIBSRC=directory
+
If you prefer to use the shared libraries, go to contrib/gregbook
-and build the rpng2-x application there.
+and build the rpng2-x application there.
diff --git a/contrib/pngminim/preader/makefile b/contrib/pngminim/preader/makefile
index f1b6ebf..f4b0ccd 100644
--- a/contrib/pngminim/preader/makefile
+++ b/contrib/pngminim/preader/makefile
@@ -5,7 +5,14 @@
CC=gcc
LD=$(CC)
+# If awk fails try
+# make AWK=nawk
+
+# If cpp fails try
+# make CPP=/lib/cpp
+
RM=rm -f
+COPY=cp
#XINC = -I/usr/include # old-style, stock X distributions
#XLIB = -L/usr/lib/X11 -lX11 # (including SGI IRIX)
@@ -23,37 +30,136 @@
#LIBS = $(XLIB)
LIBS = $(XLIB) -lm #platforms that need libm
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
- -DdeflateParams\(a,b,c\)=Z_OK -I. $(XINC) -O1
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. $(XINC) -O1
C=.c
O=.o
L=.a
E=
-ZOBJS = adler32$(O) crc32$(O) \
- infback$(O) inffast$(O) inflate$(O) inftrees$(O) \
- trees$(O) uncompr$(O) zutil$(O)
+# Where to find the source code:
+PNGSRC =../../..
+ZLIBSRC=$(PNGSRC)/../zlib
+PROGSRC=$(PNGSRC)/contrib/gregbook
-OBJS = rpng2-x$(O) readpng2$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
+# Zlib (minimal inflate requirements - crc32 is used by libpng)
+# zutil can be eliminated if you provide your own zcalloc and zcfree
+ZSRCS = adler32$(C) crc32$(C) \
+ inffast$(C) inflate$(C) inftrees$(C) \
+ zutil$(C)
+
+# Standard headers
+ZH = zlib.h crc32.h inffast.h inffixed.h \
+ inflate.h inftrees.h zutil.h
+
+# Machine generated headers
+ZCONF = zconf.h
+
+# Headers callers use
+ZINC = zlib.h $(ZCONF)
+
+# Headers the Zlib source uses
+ZHDRS = $(ZH) $(ZCONF)
+
+ZOBJS = adler32$(O) crc32$(O) \
+ inffast$(O) inflate$(O) inftrees$(O) \
+ zutil$(O)
+
+# libpng
+PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
+ pngpread$(C) pngread$(C) pngrio$(C) pngrtran$(C) pngrutil$(C) \
+ pngset$(C) pngtrans$(C)
+
+# Standard headers
+PNGH =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
+
+# Machine generated headers
+PNGCONF=pnglibconf.h
+
+# Headers callers use
+PNGINC= png.h pngconf.h pngusr.h $(PNGCONF)
+
+# Headers the PNG library uses
+PNGHDRS=$(PNGH) $(PNGCONF) pngusr.h
+
+PNGOBJS=png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
pngpread$(O) pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
- pngset$(O) pngtrans$(O) $(ZOBJS)
+ pngset$(O) pngtrans$(O)
+
+PROGSRCS= rpng2-x$(C) readpng2$(C)
+PROGHDRS= readpng2.h
+PROGDOCS= COPYING LICENSE
+PROGOBJS= rpng2-x$(O) readpng2$(O)
+
+OBJS = $(PROGOBJS) $(PNGOBJS) $(ZOBJS)
# implicit make rules -------------------------------------------------------
-.c$(O): png.h pngconf.h pngpriv.h readpng2.h pngusr.h zlib.h
+.c$(O):
$(CC) -c $(CFLAGS) $<
# dependencies
-all: rpng2-x$(E)
+all: $(PROGDOCS) rpng2-x$(E)
rpng2-x$(E): $(OBJS)
$(LD) -o rpng2-x$(E) $(OBJS) $(LIBS)
+# The DFA_XTRA setting turns all libpng options off then
+# turns on those required for this minimal build.
+# The CPP_FLAGS setting causes pngusr.h to be included in
+# both the build of pnglibconf.h and, subsequently, when
+# building libpng itself.
+$(PNGCONF): $(PNGSRC)/scripts/pnglibconf.mak\
+ $(PNGSRC)/scripts/pnglibconf.dfa \
+ $(PNGSRC)/scripts/options.awk pngusr.h pngusr.dfa
+ $(RM) pnglibconf.h pnglibconf.dfn
+ $(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
+ srcdir=$(PNGSRC) CPPFLAGS="-DPNG_USER_CONFIG"\
+ DFA_XTRA="pngusr.dfa" $@
+
clean:
+ $(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
+ srcdir=$(PNGSRC) clean
$(RM) rpng2-x$(O)
$(RM) rpng2-x$(E)
$(RM) $(OBJS)
+# distclean also removes the copied source and headers
+distclean: clean
+ $(RM) -r scripts # historical reasons
+ $(RM) $(PNGSRCS) $(PNGH)
+ $(RM) $(ZSRCS) $(ZH) $(ZCONF)
+ $(RM) $(PROGSRCS) $(PROGHDRS) $(PROGDOCS)
+
+# Header file dependencies:
+$(PROGOBJS): $(PROGHDRS) $(PNGINC) $(ZINC)
+$(PNGOBJS): $(PNGHDRS) $(ZINC)
+$(ZOBJS): $(ZHDRS)
+
+# Gather the source code from the respective directories
+$(PNGSRCS) $(PNGH): $(PNGSRC)/$@
+ $(RM) $@
+ $(COPY) $(PNGSRC)/$@ $@
+
+# No dependency on the ZLIBSRC target so that it only needs
+# to be specified once.
+$(ZSRCS) $(ZH):
+ $(RM) $@
+ $(COPY) $(ZLIBSRC)/$@ $@
+
+# The unconfigured zconf.h varies in name according to the
+# zlib release
+$(ZCONF):
+ $(RM) $@
+ @for f in zconf.h.in zconf.in.h zconf.h; do\
+ test -r $(ZLIBSRC)/$$f &&\
+ echo $(COPY) $(ZLIBSRC)/$$f $@ &&\
+ $(COPY) $(ZLIBSRC)/$$f $@ && exit 0;\
+ done; echo copy: $(ZLIBSRC)/zconf.h not found; exit 1
+
+$(PROGSRCS) $(PROGHDRS) $(PROGDOCS): $(PROGSRC)/$@
+ $(RM) $@
+ $(COPY) $(PROGSRC)/$@ $@
+
# End of makefile for rpng2-x
diff --git a/contrib/pngminim/preader/pngusr.dfa b/contrib/pngminim/preader/pngusr.dfa
new file mode 100644
index 0000000..216c421
--- /dev/null
+++ b/contrib/pngminim/preader/pngusr.dfa
@@ -0,0 +1,40 @@
+# pngminim/preader/pngusr.dfa
+#
+# Copyright (c) 2010-2011 Glenn Randers-Pehrson
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# First all the build options off:
+
+everything = off
+
+# Just switch on the progressive read code
+
+option PROGRESSIVE_READ on
+
+# You may choose fixed or floating point APIs:
+# option FLOATING_POINT on
+
+option FIXED_POINT on
+
+# You must chose the internal fixed point implementation or to
+# use the system floating point. The latter is considerably
+# smaller (by about 1kbyte on an x86 system):
+
+option FLOATING_ARITHMETIC on
+# option FLOATING_ARITHMETIC off
+
+# Your program will probably need other options. The example
+# program here, rpng2-x, requires the following. Take a look
+# at pnglibconf.h to find out the full set of what has to be
+# enabled to make the following work.
+
+option SETJMP on
+option STDIO on
+option READ_bKGD on
+option READ_GAMMA on
+option READ_EXPAND on
+option READ_STRIP_16_TO_8 on
+option READ_GRAY_TO_RGB on
diff --git a/contrib/pngminim/preader/pngusr.h b/contrib/pngminim/preader/pngusr.h
index 46c5e48..73cfecf 100644
--- a/contrib/pngminim/preader/pngusr.h
+++ b/contrib/pngminim/preader/pngusr.h
@@ -1,6 +1,6 @@
/* minrdpngconf.h: headers to make a minimal png-read-only library
*
- * Copyright (c) 2009 Glenn Randers-Pehrson
+ * Copyright (c) 2009, 2010-2011 Glenn Randers-Pehrson
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -12,57 +12,13 @@
#ifndef MINPRDPNGCONF_H
#define MINPRDPNGCONF_H
+/* To include pngusr.h set -DPNG_USER_CONFIG in CPPFLAGS */
+
+/* List options to turn off features of the build that do not
+ * affect the API (so are not recorded in pnglibconf.h)
+ */
+
#define PNG_NO_WARNINGS
-#define png_warning(s1,s2) ""
-#define png_chunk_warning(s1,s2) ""
-#define PNG_NO_ERROR_TEXT
-#define png_error(s1,s2) png_err(s1)
-#define png_chunk_error(s1,s2) png_err(s1)
-
-#define PNG_NO_READ_BGR
-#define PNG_NO_READ_DITHER
-#define PNG_NO_READ_INVERT
-#define PNG_NO_READ_SHIFT
-#define PNG_NO_READ_PACK
-#define PNG_NO_READ_PACKSWAP
-#define PNG_NO_READ_FILLER
-#define PNG_NO_READ_SWAP
-#define PNG_NO_READ_SWAP_ALPHA
-#define PNG_NO_READ_INVERT_ALPHA
-#define PNG_NO_READ_RGB_TO_GRAY
-#define PNG_NO_READ_USER_TRANSFORM
-#define PNG_NO_READ_cHRM
-#define PNG_NO_READ_hIST
-#define PNG_NO_READ_iCCP
-#define PNG_NO_READ_oFFs
-#define PNG_NO_READ_pCAL
-#define PNG_NO_READ_pHYs
-#define PNG_NO_READ_sBIT
-#define PNG_NO_READ_sCAL
-#define PNG_NO_READ_sPLT
-#define PNG_NO_READ_TEXT
-#define PNG_NO_READ_tIME
-#define PNG_NO_READ_UNKNOWN_CHUNKS
-#define PNG_NO_READ_USER_CHUNKS
-#define PNG_NO_READ_EMPTY_PLTE
-#define PNG_NO_READ_OPT_PLTE
-#define PNG_NO_READ_STRIP_ALPHA
-
-#define PNG_NO_WRITE_SUPPORTED
-
-#define PNG_NO_INFO_IMAGE
-#define PNG_NO_IO_STATE
-#define PNG_NO_USER_MEM
-#define PNG_NO_FIXED_POINT_SUPPORTED
-#define PNG_NO_MNG_FEATURES
-#define PNG_NO_USER_TRANSFORM_PTR
-#define PNG_NO_HANDLE_AS_UNKNOWN
-#define PNG_NO_CONSOLE_IO
-#define PNG_NO_ZALLOC_ZERO
-#define PNG_NO_ERROR_NUMBERS
-#define PNG_NO_EASY_ACCESS
-#define PNG_NO_USER_LIMITS
-#define PNG_NO_SET_USER_LIMITS
-#define PNG_NO_TIME_RFC1123
+#define PNG_ALIGN_TYPE PNG_ALIGN_NONE
#endif /* MINPRDPNGCONF_H */
diff --git a/contrib/pngminus/makefile.std b/contrib/pngminus/makefile.std
index 080a44c..fa7b590 100644
--- a/contrib/pngminus/makefile.std
+++ b/contrib/pngminus/makefile.std
@@ -8,9 +8,9 @@
RM=rm -f
#PNGPATH = /usr/local
-#PNGINC = -I$(PNGPATH)/include/libpng14
-#PNGLIB = -L$(PNGPATH)/lib -lpng14
-#PNGLIBS = $(PNGPATH)/lib/libpng14.a
+#PNGINC = -I$(PNGPATH)/include/libpng15
+#PNGLIB = -L$(PNGPATH)/lib -lpng15
+#PNGLIBS = $(PNGPATH)/lib/libpng15.a
PNGINC = -I../..
PNGLIB = -L../.. -lpng
PNGLIBS = ../../libpng.a
diff --git a/contrib/pngminus/png2pnm.c b/contrib/pngminus/png2pnm.c
index 326f144..2281429 100644
--- a/contrib/pngminus/png2pnm.c
+++ b/contrib/pngminus/png2pnm.c
@@ -144,7 +144,7 @@
if (png2pnm (fp_rd, fp_wr, fp_al, raw, alpha) == FALSE)
{
fprintf (stderr, "PNG2PNM\n");
- fprintf (stderr, "Error: unsuccessful convertion of PNG-image\n");
+ fprintf (stderr, "Error: unsuccessful conversion of PNG-image\n");
exit(1);
}
@@ -188,7 +188,7 @@
BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL alpha)
{
png_struct *png_ptr = NULL;
- png_info *info_ptr = NULL;
+ png_info *info_ptr = NULL;
png_byte buf[8];
png_byte *png_pixels = NULL;
png_byte **row_pointers = NULL;
@@ -381,7 +381,7 @@
fputc ((int) *pix_ptr++ , pnm_file);
else
if (bit_depth == 16){
- dep_16 = (long) *pix_ptr++;
+ dep_16 = (long) *pix_ptr++;
fprintf (pnm_file, "%ld ", (dep_16 << 8) + ((long) *pix_ptr++));
}
else
@@ -401,9 +401,9 @@
fputc ((int) *pix_ptr++ , alpha_file);
else
if (bit_depth == 16){
- dep_16 = (long) *pix_ptr++;
+ dep_16 = (long) *pix_ptr++;
fprintf (alpha_file, "%ld ", (dep_16 << 8) + (long) *pix_ptr++);
- }
+ }
else
fprintf (alpha_file, "%ld ", (long) *pix_ptr++);
}
diff --git a/contrib/pngsuite/README b/contrib/pngsuite/README
index 714baff..b2b1537 100644
--- a/contrib/pngsuite/README
+++ b/contrib/pngsuite/README
@@ -6,9 +6,9 @@
Permission to use, copy, modify, and distribute these images for any
purpose and without fee is hereby granted.
-The 15 "bas*.png" images are part of the much larger PngSuite test-set of
-images, available for developers of PNG supporting software. The
-complete set, available at http:/www.schaik.com/pngsuite/, contains
+The 15 "bas*.png" images are part of the much larger PngSuite test-set of
+images, available for developers of PNG supporting software. The
+complete set, available at http:/www.schaik.com/pngsuite/, contains
a variety of images to test interlacing, gamma settings, ancillary
chunks, etc.
@@ -48,7 +48,7 @@
ftbwn3p08.png 8-bit paletted, white bKGD
ftbyn3p08.png 8-bit paletted, yellow bKGD
ftp0n0g08.png 8-bit grayscale, opaque
- ftp0n2c08.png 8-bit truecolor, opaque
+ ftp0n2c08.png 8-bit truecolor, opaque
ftp0n3p08.png 8-bit paletted, opaque
ftp1n3p08.png 8-bit paletted, no bKGD
diff --git a/contrib/visupng/PngFile.c b/contrib/visupng/PngFile.c
index db0219e..ef0984e 100644
--- a/contrib/visupng/PngFile.c
+++ b/contrib/visupng/PngFile.c
@@ -1,12 +1,13 @@
-//-------------------------------------
-// PNGFILE.C -- Image File Functions
-//-------------------------------------
-
-// Copyright 2000, Willem van Schaik.
-//
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
+/*-------------------------------------
+ * PNGFILE.C -- Image File Functions
+ *-------------------------------------
+ *
+ * Copyright 2000, Willem van Schaik.
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
#include <windows.h>
#include <commdlg.h>
@@ -28,7 +29,7 @@
static png_infop info_ptr = NULL;
-// cexcept interface
+/* cexcept interface */
static void
png_cexcept_error(png_structp png_ptr, png_const_charp msg)
@@ -43,7 +44,7 @@
}
}
-// Windows open-file functions
+/* Windows open-file functions */
void PngFileInitialize (HWND hwnd)
{
@@ -57,13 +58,13 @@
ofn.lpstrCustomFilter = NULL;
ofn.nMaxCustFilter = 0;
ofn.nFilterIndex = 0;
- ofn.lpstrFile = NULL; // Set in Open and Close functions
+ ofn.lpstrFile = NULL; /* Set in Open and Close functions */
ofn.nMaxFile = MAX_PATH;
- ofn.lpstrFileTitle = NULL; // Set in Open and Close functions
+ ofn.lpstrFileTitle = NULL; /* Set in Open and Close functions */
ofn.nMaxFileTitle = MAX_PATH;
ofn.lpstrInitialDir = NULL;
ofn.lpstrTitle = NULL;
- ofn.Flags = 0; // Set in Open and Close functions
+ ofn.Flags = 0; /* Set in Open and Close functions */
ofn.nFileOffset = 0;
ofn.nFileExtension = 0;
ofn.lpstrDefExt = TEXT ("png");
@@ -92,7 +93,7 @@
return GetSaveFileName (&ofn);
}
-// PNG image handler functions
+/* PNG image handler functions */
BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
int *piWidth, int *piHeight, int *piChannels, png_color *pBkgColor)
@@ -109,7 +110,7 @@
static png_byte **ppbRowPointers = NULL;
int i;
- // open the PNG input file
+ /* open the PNG input file */
if (!pstrFileName)
{
@@ -123,7 +124,7 @@
return FALSE;
}
- // first check the eight byte PNG signature
+ /* first check the eight byte PNG signature */
fread(pbSig, 1, 8, pfFile);
if (png_sig_cmp(pbSig, 0, 8))
@@ -132,7 +133,7 @@
return FALSE;
}
- // create the two png(-info) structures
+ /* create the two png(-info) structures */
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL,
(png_error_ptr)png_cexcept_error, (png_error_ptr)NULL);
@@ -152,31 +153,37 @@
Try
{
-
- // initialize the png structure
-
+
+ /* initialize the png structure */
+
#ifdef PNG_STDIO_SUPPORTED
png_init_io(png_ptr, pfFile);
#else
png_set_read_fn(png_ptr, (png_voidp)pfFile, png_read_data);
#endif
-
+
png_set_sig_bytes(png_ptr, 8);
-
- // read all PNG info up to image data
-
+
+ /* read all PNG info up to image data */
+
png_read_info(png_ptr, info_ptr);
-
- // get width, height, bit-depth and color-type
-
+
+ /* get width, height, bit-depth and color-type */
+
png_get_IHDR(png_ptr, info_ptr, piWidth, piHeight, &iBitDepth,
&iColorType, NULL, NULL, NULL);
-
- // expand images of all color-type and bit-depth to 3x8 bit RGB images
- // let the library process things like alpha, transparency, background
-
- if (iBitDepth == 16)
- png_set_strip_16(png_ptr);
+
+ /* expand images of all color-type and bit-depth to 3x8-bit RGB */
+ /* let the library process alpha, transparency, background, etc. */
+
+#ifdef PNG_READ_16_TO_8_SUPPORTED
+ if (iBitDepth == 16)
+# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ png_set_scale_16(png_ptr);
+# else
+ png_set_strip_16(png_ptr);
+# endif
+#endif
if (iColorType == PNG_COLOR_TYPE_PALETTE)
png_set_expand(png_ptr);
if (iBitDepth < 8)
@@ -186,8 +193,8 @@
if (iColorType == PNG_COLOR_TYPE_GRAY ||
iColorType == PNG_COLOR_TYPE_GRAY_ALPHA)
png_set_gray_to_rgb(png_ptr);
-
- // set the background color to draw transparent and alpha images over.
+
+ /* set the background color to draw transparent and alpha images over */
if (png_get_bKGD(png_ptr, info_ptr, &pBackground))
{
png_set_background(png_ptr, pBackground, PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
@@ -199,30 +206,30 @@
{
pBkgColor = NULL;
}
-
- // if required set gamma conversion
+
+ /* if required set gamma conversion */
if (png_get_gAMA(png_ptr, info_ptr, &dGamma))
png_set_gamma(png_ptr, (double) 2.2, dGamma);
-
- // after the transformations have been registered update info_ptr data
-
+
+ /* after the transformations are registered, update info_ptr data */
+
png_read_update_info(png_ptr, info_ptr);
-
- // get again width, height and the new bit-depth and color-type
-
+
+ /* get again width, height and the new bit-depth and color-type */
+
png_get_IHDR(png_ptr, info_ptr, piWidth, piHeight, &iBitDepth,
&iColorType, NULL, NULL, NULL);
-
-
- // row_bytes is the width x number of channels
-
+
+
+ /* row_bytes is the width x number of channels */
+
ulRowBytes = png_get_rowbytes(png_ptr, info_ptr);
ulChannels = png_get_channels(png_ptr, info_ptr);
-
+
*piChannels = ulChannels;
-
- // now we can allocate memory to store the image
-
+
+ /* now we can allocate memory to store the image */
+
if (pbImageData)
{
free (pbImageData);
@@ -234,34 +241,34 @@
png_error(png_ptr, "Visual PNG: out of memory");
}
*ppbImageData = pbImageData;
-
- // and allocate memory for an array of row-pointers
-
+
+ /* and allocate memory for an array of row-pointers */
+
if ((ppbRowPointers = (png_bytepp) malloc((*piHeight)
* sizeof(png_bytep))) == NULL)
{
png_error(png_ptr, "Visual PNG: out of memory");
}
-
- // set the individual row-pointers to point at the correct offsets
-
+
+ /* set the individual row-pointers to point at the correct offsets */
+
for (i = 0; i < (*piHeight); i++)
ppbRowPointers[i] = pbImageData + i * ulRowBytes;
-
- // now we can go ahead and just read the whole image
-
+
+ /* now we can go ahead and just read the whole image */
+
png_read_image(png_ptr, ppbRowPointers);
-
- // read the additional chunks in the PNG file (not really needed)
-
+
+ /* read the additional chunks in the PNG file (not really needed) */
+
png_read_end(png_ptr, NULL);
-
- // and we're done
-
+
+ /* and we're done */
+
free (ppbRowPointers);
ppbRowPointers = NULL;
-
- // yepp, done
+
+ /* yepp, done */
}
Catch (msg)
@@ -269,7 +276,7 @@
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
*ppbImageData = pbImageData = NULL;
-
+
if(ppbRowPointers)
free (ppbRowPointers);
@@ -295,7 +302,7 @@
static png_byte **ppbRowPointers = NULL;
int i;
- // open the PNG output file
+ /* open the PNG output file */
if (!pstrFileName)
return FALSE;
@@ -303,7 +310,7 @@
if (!(pfFile = fopen(pstrFileName, "wb")))
return FALSE;
- // prepare the standard PNG structures
+ /* prepare the standard PNG structures */
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL,
(png_error_ptr)png_cexcept_error, (png_error_ptr)NULL);
@@ -322,60 +329,60 @@
Try
{
- // initialize the png structure
-
+ /* initialize the png structure */
+
#ifdef PNG_STDIO_SUPPORTED
png_init_io(png_ptr, pfFile);
#else
png_set_write_fn(png_ptr, (png_voidp)pfFile, png_write_data, png_flush);
#endif
-
- // we're going to write a very simple 3x8 bit RGB image
-
+
+ /* we're going to write a very simple 3x8-bit RGB image */
+
png_set_IHDR(png_ptr, info_ptr, iWidth, iHeight, ciBitDepth,
PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE,
PNG_FILTER_TYPE_BASE);
-
- // write the file header information
-
+
+ /* write the file header information */
+
png_write_info(png_ptr, info_ptr);
-
- // swap the BGR pixels in the DiData structure to RGB
-
+
+ /* swap the BGR pixels in the DiData structure to RGB */
+
png_set_bgr(png_ptr);
-
- // row_bytes is the width x number of channels
-
+
+ /* row_bytes is the width x number of channels */
+
ulRowBytes = iWidth * ciChannels;
-
- // we can allocate memory for an array of row-pointers
-
+
+ /* we can allocate memory for an array of row-pointers */
+
if ((ppbRowPointers = (png_bytepp) malloc(iHeight * sizeof(png_bytep))) == NULL)
Throw "Visualpng: Out of memory";
-
- // set the individual row-pointers to point at the correct offsets
-
+
+ /* set the individual row-pointers to point at the correct offsets */
+
for (i = 0; i < iHeight; i++)
ppbRowPointers[i] = pDiData + i * (((ulRowBytes + 3) >> 2) << 2);
-
- // write out the entire image data in one call
-
+
+ /* write out the entire image data in one call */
+
png_write_image (png_ptr, ppbRowPointers);
-
- // write the additional chunks to the PNG file (not really needed)
-
+
+ /* write the additional chunks to the PNG file (not really needed) */
+
png_write_end(png_ptr, info_ptr);
-
- // and we're done
-
+
+ /* and we're done */
+
free (ppbRowPointers);
ppbRowPointers = NULL;
-
- // clean up after the write, and free any memory allocated
-
+
+ /* clean up after the write, and free any memory allocated */
+
png_destroy_write_struct(&png_ptr, (png_infopp) NULL);
-
- // yepp, done
+
+ /* yepp, done */
}
Catch (msg)
@@ -389,9 +396,9 @@
return FALSE;
}
-
+
fclose (pfFile);
-
+
return TRUE;
}
@@ -437,6 +444,7 @@
#endif
-//-----------------
-// end of source
-//-----------------
+/*-----------------
+ * end of source
+ *-----------------
+ */
diff --git a/contrib/visupng/PngFile.h b/contrib/visupng/PngFile.h
index dc6bbb4..32181a4 100644
--- a/contrib/visupng/PngFile.h
+++ b/contrib/visupng/PngFile.h
@@ -1,12 +1,12 @@
-//------------------------------------------
-// PNGFILE.H -- Header File for pngfile.c
-//------------------------------------------
+/*------------------------------------------*/
+/* PNGFILE.H -- Header File for pngfile.c*/
+/*------------------------------------------*/
-// Copyright 2000, Willem van Schaik.
+/* Copyright 2000, Willem van Schaik.*/
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
+/* This code is released under the libpng license.*/
+/* For conditions of distribution and use, see the disclaimer*/
+/* and license in png.h*/
#include <stdio.h>
#include <stdlib.h>
diff --git a/contrib/visupng/README.txt b/contrib/visupng/README.txt
index 4047119..72c5cba 100644
--- a/contrib/visupng/README.txt
+++ b/contrib/visupng/README.txt
@@ -8,8 +8,8 @@
and license in png.h
As a PNG .dll demo VisualPng is finished. More features would only hinder
-the program's objective. However, further extensions (like support for other
-graphics formats) are in development. To get these, or for pre-compiled
+the program's objective. However, further extensions (like support for other
+graphics formats) are in development. To get these, or for pre-compiled
binaries, go to "http://www.schaik.com/png/visualpng.html".
------------------------------------------------------------------------
diff --git a/contrib/visupng/VisualPng.c b/contrib/visupng/VisualPng.c
index 2018999..009f120 100644
--- a/contrib/visupng/VisualPng.c
+++ b/contrib/visupng/VisualPng.c
@@ -1,41 +1,42 @@
-//------------------------------------
-// VisualPng.C -- Shows a PNG image
-//------------------------------------
+/*------------------------------------
+ * VisualPng.C -- Shows a PNG image
+ *------------------------------------
+ *
+ * Copyright 2000, Willem van Schaik.
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
-// Copyright 2000, Willem van Schaik.
+/* switches */
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
-
-// switches
-
-// defines
+/* defines */
#define PROGNAME "VisualPng"
#define LONGNAME "Win32 Viewer for PNG-files"
#define VERSION "1.0 of 2000 June 07"
-// constants
+/* constants */
#define MARGIN 8
-// standard includes
+/* standard includes */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
-// application includes
+/* application includes */
#include "png.h"
#include "pngfile.h"
#include "resource.h"
-// macros
+/* macros */
-// function prototypes
+/* function prototypes */
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM);
BOOL CALLBACK AboutDlgProc (HWND, UINT, WPARAM, LPARAM) ;
@@ -65,14 +66,14 @@
BYTE *pbImage, int cxImgSize, int cyImgSize, int cImgChannels,
BOOL bStretched);
-// a few global variables
+/* a few global variables */
static char *szProgName = PROGNAME;
static char *szAppName = LONGNAME;
static char *szIconName = PROGNAME;
static char szCmdFileName [MAX_PATH];
-// MAIN routine
+/* MAIN routine */
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
@@ -90,7 +91,7 @@
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon (hInstance, szIconName) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW);
- wndclass.hbrBackground = NULL; // (HBRUSH) GetStockObject (GRAY_BRUSH);
+ wndclass.hbrBackground = NULL; /* (HBRUSH) GetStockObject (GRAY_BRUSH); */
wndclass.lpszMenuName = szProgName;
wndclass.lpszClassName = szProgName;
@@ -101,7 +102,7 @@
return 0;
}
- // if filename given on commandline, store it
+ /* if filename given on commandline, store it */
if ((szCmdLine != NULL) && (*szCmdLine != '\0'))
if (szCmdLine[0] == '"')
strncpy (szCmdFileName, szCmdLine + 1, strlen(szCmdLine) - 2);
@@ -110,20 +111,20 @@
else
strcpy (szCmdFileName, "");
- // calculate size of window-borders
+ /* calculate size of window-borders */
ixBorders = 2 * (GetSystemMetrics (SM_CXBORDER) +
GetSystemMetrics (SM_CXDLGFRAME));
iyBorders = 2 * (GetSystemMetrics (SM_CYBORDER) +
GetSystemMetrics (SM_CYDLGFRAME)) +
GetSystemMetrics (SM_CYCAPTION) +
GetSystemMetrics (SM_CYMENUSIZE) +
- 1; /* WvS: don't ask me why? */
+ 1; /* WvS: don't ask me why? */
hwnd = CreateWindow (szProgName, szAppName,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
512 + 2 * MARGIN + ixBorders, 384 + 2 * MARGIN + iyBorders,
-// CW_USEDEFAULT, CW_USEDEFAULT,
+/* CW_USEDEFAULT, CW_USEDEFAULT, */
NULL, NULL, hInstance, NULL);
ShowWindow (hwnd, iCmdShow);
@@ -180,29 +181,29 @@
strcpy (szImgPathName, "");
- // in case we process file given on command-line
+ /* in case we process file given on command-line */
if (szCmdFileName[0] != '\0')
{
strcpy (szImgPathName, szCmdFileName);
- // read the other png-files in the directory for later
- // next/previous commands
+ /* read the other png-files in the directory for later */
+ /* next/previous commands */
BuildPngList (szImgPathName, &pPngFileList, &iPngFileCount,
&iPngFileIndex);
- // load the image from file
+ /* load the image from file */
if (!LoadImageFile (hwnd, szImgPathName,
&pbImage, &cxImgSize, &cyImgSize, &cImgChannels, &bkgColor))
return 0;
- // invalidate the client area for later update
+ /* invalidate the client area for later update */
InvalidateRect (hwnd, NULL, TRUE);
- // display the PNG into the DIBitmap
+ /* display the PNG into the DIBitmap */
DisplayImage (hwnd, &pDib, &pDiData, cxWinSize, cyWinSize,
pbImage, cxImgSize, cyImgSize, cImgChannels, bStretched);
@@ -214,11 +215,11 @@
cxWinSize = LOWORD (lParam);
cyWinSize = HIWORD (lParam);
- // invalidate the client area for later update
+ /* invalidate the client area for later update */
InvalidateRect (hwnd, NULL, TRUE);
- // display the PNG into the DIBitmap
+ /* display the PNG into the DIBitmap */
DisplayImage (hwnd, &pDib, &pDiData, cxWinSize, cyWinSize,
pbImage, cxImgSize, cyImgSize, cImgChannels, bStretched);
@@ -242,28 +243,28 @@
{
case IDM_FILE_OPEN:
- // show the File Open dialog box
+ /* show the File Open dialog box */
if (!PngFileOpenDlg (hwnd, szImgPathName, szTitleName))
return 0;
- // read the other png-files in the directory for later
- // next/previous commands
+ /* read the other png-files in the directory for later */
+ /* next/previous commands */
BuildPngList (szImgPathName, &pPngFileList, &iPngFileCount,
&iPngFileIndex);
- // load the image from file
+ /* load the image from file */
if (!LoadImageFile (hwnd, szImgPathName,
&pbImage, &cxImgSize, &cyImgSize, &cImgChannels, &bkgColor))
return 0;
- // invalidate the client area for later update
+ /* invalidate the client area for later update */
InvalidateRect (hwnd, NULL, TRUE);
- // display the PNG into the DIBitmap
+ /* display the PNG into the DIBitmap */
DisplayImage (hwnd, &pDib, &pDiData, cxWinSize, cyWinSize,
pbImage, cxImgSize, cyImgSize, cImgChannels, bStretched);
@@ -272,12 +273,12 @@
case IDM_FILE_SAVE:
- // show the File Save dialog box
+ /* show the File Save dialog box */
if (!PngFileSaveDlg (hwnd, szImgPathName, szTitleName))
return 0;
- // save the PNG to a disk file
+ /* save the PNG to a disk file */
SetCursor (LoadCursor (NULL, IDC_WAIT));
ShowCursor (TRUE);
@@ -295,55 +296,55 @@
case IDM_FILE_NEXT:
- // read next entry in the directory
+ /* read next entry in the directory */
if (SearchPngList (pPngFileList, iPngFileCount, &iPngFileIndex,
NULL, szImgPathName))
{
if (strcmp (szImgPathName, "") == 0)
return 0;
-
- // load the image from file
-
+
+ /* load the image from file */
+
if (!LoadImageFile (hwnd, szImgPathName, &pbImage,
&cxImgSize, &cyImgSize, &cImgChannels, &bkgColor))
return 0;
-
- // invalidate the client area for later update
-
+
+ /* invalidate the client area for later update */
+
InvalidateRect (hwnd, NULL, TRUE);
-
- // display the PNG into the DIBitmap
-
+
+ /* display the PNG into the DIBitmap */
+
DisplayImage (hwnd, &pDib, &pDiData, cxWinSize, cyWinSize,
pbImage, cxImgSize, cyImgSize, cImgChannels, bStretched);
}
-
+
return 0;
case IDM_FILE_PREVIOUS:
- // read previous entry in the directory
+ /* read previous entry in the directory */
if (SearchPngList (pPngFileList, iPngFileCount, &iPngFileIndex,
szImgPathName, NULL))
{
-
+
if (strcmp (szImgPathName, "") == 0)
return 0;
-
- // load the image from file
-
+
+ /* load the image from file */
+
if (!LoadImageFile (hwnd, szImgPathName, &pbImage, &cxImgSize,
&cyImgSize, &cImgChannels, &bkgColor))
return 0;
-
- // invalidate the client area for later update
-
+
+ /* invalidate the client area for later update */
+
InvalidateRect (hwnd, NULL, TRUE);
-
- // display the PNG into the DIBitmap
-
+
+ /* display the PNG into the DIBitmap */
+
DisplayImage (hwnd, &pDib, &pDiData, cxWinSize, cyWinSize,
pbImage, cxImgSize, cyImgSize, cImgChannels, bStretched);
}
@@ -352,9 +353,9 @@
case IDM_FILE_EXIT:
- // more cleanup needed...
+ /* more cleanup needed... */
- // free image buffer
+ /* free image buffer */
if (pDib != NULL)
{
@@ -362,7 +363,7 @@
pDib = NULL;
}
- // free file-list
+ /* free file-list */
if (pPngFileList != NULL)
{
@@ -370,7 +371,7 @@
pPngFileList = NULL;
}
- // let's go ...
+ /* let's go ... */
exit (0);
@@ -383,11 +384,11 @@
else
CheckMenuItem (hMenu, IDM_OPTIONS_STRETCH, MF_UNCHECKED);
- // invalidate the client area for later update
+ /* invalidate the client area for later update */
InvalidateRect (hwnd, NULL, TRUE);
- // display the PNG into the DIBitmap
+ /* display the PNG into the DIBitmap */
DisplayImage (hwnd, &pDib, &pDiData, cxWinSize, cyWinSize,
pbImage, cxImgSize, cyImgSize, cImgChannels, bStretched);
@@ -398,7 +399,7 @@
DialogBox (hInstance, TEXT ("AboutBox"), hwnd, AboutDlgProc) ;
return 0;
- } // end switch
+ } /* end switch */
break;
@@ -450,10 +451,10 @@
return FALSE ;
}
-//---------------
-// CenterAbout
-//---------------
-
+/*---------------
+ * CenterAbout
+ *---------------
+ */
BOOL CenterAbout (HWND hwndChild, HWND hwndParent)
{
RECT rChild, rParent, rWorkArea;
@@ -461,19 +462,19 @@
int xNew, yNew;
BOOL bResult;
- // Get the Height and Width of the child window
+ /* Get the Height and Width of the child window */
GetWindowRect (hwndChild, &rChild);
wChild = rChild.right - rChild.left;
hChild = rChild.bottom - rChild.top;
- // Get the Height and Width of the parent window
+ /* Get the Height and Width of the parent window */
GetWindowRect (hwndParent, &rParent);
wParent = rParent.right - rParent.left;
hParent = rParent.bottom - rParent.top;
- // Get the limits of the 'workarea'
+ /* Get the limits of the 'workarea' */
bResult = SystemParametersInfo(
- SPI_GETWORKAREA, // system parameter to query or set
+ SPI_GETWORKAREA, /* system parameter to query or set */
sizeof(RECT),
&rWorkArea,
0);
@@ -483,7 +484,7 @@
rWorkArea.bottom = GetSystemMetrics(SM_CYSCREEN);
}
- // Calculate new X position, then adjust for workarea
+ /* Calculate new X position, then adjust for workarea */
xNew = rParent.left + ((wParent - wChild) /2);
if (xNew < rWorkArea.left) {
xNew = rWorkArea.left;
@@ -491,7 +492,7 @@
xNew = rWorkArea.right - wChild;
}
- // Calculate new Y position, then adjust for workarea
+ /* Calculate new Y position, then adjust for workarea */
yNew = rParent.top + ((hParent - hChild) /2);
if (yNew < rWorkArea.top) {
yNew = rWorkArea.top;
@@ -499,15 +500,15 @@
yNew = rWorkArea.bottom - hChild;
}
- // Set it, and return
+ /* Set it, and return */
return SetWindowPos (hwndChild, NULL, xNew, yNew, 0, 0, SWP_NOSIZE |
SWP_NOZORDER);
}
-//----------------
-// BuildPngList
-//----------------
-
+/*----------------
+ * BuildPngList
+ *----------------
+ */
BOOL BuildPngList (PTSTR pstrPathName, TCHAR **ppFileList, int *pFileCount,
int *pFileIndex)
{
@@ -523,7 +524,7 @@
int i, ii;
int j, jj;
- // free previous file-list
+ /* free previous file-list */
if (*ppFileList != NULL)
{
@@ -531,7 +532,7 @@
*ppFileList = NULL;
}
- // extract foldername, filename and search-name
+ /* extract foldername, filename and search-name */
strcpy (szImgPathName, pstrPathName);
strcpy (szImgFileName, strrchr (pstrPathName, '\\') + 1);
@@ -540,7 +541,7 @@
*(strrchr (szImgFindName, '\\') + 1) = '\0';
strcat (szImgFindName, "*.png");
- // first cycle: count number of files in directory for memory allocation
+ /* first cycle: count number of files in directory for memory allocation */
*pFileCount = 0;
@@ -554,11 +555,11 @@
}
FindClose(hFind);
- // allocation memory for file-list
+ /* allocation memory for file-list */
*ppFileList = (TCHAR *) malloc (*pFileCount * MAX_PATH);
- // second cycle: read directory and store filenames in file-list
+ /* second cycle: read directory and store filenames in file-list */
hFind = FindFirstFile(szImgFindName, &finddata);
bOk = (hFind != (HANDLE) -1);
@@ -580,7 +581,7 @@
}
FindClose(hFind);
- // finally we must sort the file-list
+ /* finally we must sort the file-list */
for (i = 0; i < *pFileCount - 1; i++)
{
@@ -594,7 +595,7 @@
strcpy (*ppFileList + jj, *ppFileList + ii);
strcpy (*ppFileList + ii, szTmp);
- // check if this was the current image that we moved
+ /* check if this was the current image that we moved */
if (*pFileIndex == i)
*pFileIndex = j;
@@ -608,9 +609,10 @@
return TRUE;
}
-//----------------
-// SearchPngList
-//----------------
+/*----------------
+ * SearchPngList
+ *----------------
+ */
BOOL SearchPngList (
TCHAR *pFileList, int FileCount, int *pFileIndex,
@@ -618,30 +620,30 @@
{
if (FileCount > 0)
{
- // get previous entry
-
+ /* get previous entry */
+
if (pstrPrevName != NULL)
{
if (*pFileIndex > 0)
*pFileIndex -= 1;
else
*pFileIndex = FileCount - 1;
-
+
strcpy (pstrPrevName, pFileList + (*pFileIndex * MAX_PATH));
}
-
- // get next entry
-
+
+ /* get next entry */
+
if (pstrNextName != NULL)
{
if (*pFileIndex < FileCount - 1)
*pFileIndex += 1;
else
*pFileIndex = 0;
-
+
strcpy (pstrNextName, pFileList + (*pFileIndex * MAX_PATH));
}
-
+
return TRUE;
}
else
@@ -650,9 +652,10 @@
}
}
-//-----------------
-// LoadImageFile
-//-----------------
+/*-----------------
+ * LoadImageFile
+ *-----------------
+ */
BOOL LoadImageFile (HWND hwnd, PTSTR pstrPathName,
png_byte **ppbImage, int *pxImgSize, int *pyImgSize,
@@ -660,7 +663,7 @@
{
static TCHAR szTmp [MAX_PATH];
- // if there's an existing PNG, free the memory
+ /* if there's an existing PNG, free the memory */
if (*ppbImage)
{
@@ -668,7 +671,7 @@
*ppbImage = NULL;
}
- // Load the entire PNG into memory
+ /* Load the entire PNG into memory */
SetCursor (LoadCursor (NULL, IDC_WAIT));
ShowCursor (TRUE);
@@ -694,10 +697,10 @@
return TRUE;
}
-//----------------
-// DisplayImage
-//----------------
-
+/*----------------
+ * DisplayImage
+ *----------------
+ */
BOOL DisplayImage (HWND hwnd, BYTE **ppDib,
BYTE **ppDiData, int cxWinSize, int cyWinSize,
BYTE *pbImage, int cxImgSize, int cyImgSize, int cImgChannels,
@@ -705,14 +708,14 @@
{
BYTE *pDib = *ppDib;
BYTE *pDiData = *ppDiData;
- // BITMAPFILEHEADER *pbmfh;
+ /* BITMAPFILEHEADER *pbmfh; */
BITMAPINFOHEADER *pbmih;
WORD wDIRowBytes;
png_color bkgBlack = {0, 0, 0};
png_color bkgGray = {127, 127, 127};
png_color bkgWhite = {255, 255, 255};
- // allocate memory for the Device Independant bitmap
+ /* allocate memory for the Device Independant bitmap */
wDIRowBytes = (WORD) ((3 * cxWinSize + 3L) >> 2) << 2;
@@ -733,7 +736,7 @@
*ppDib = pDib;
memset (pDib, 0, sizeof(BITMAPINFOHEADER));
- // initialize the dib-structure
+ /* initialize the dib-structure */
pbmih = (BITMAPINFOHEADER *) pDib;
pbmih->biSize = sizeof(BITMAPINFOHEADER);
@@ -745,11 +748,11 @@
pDiData = pDib + sizeof(BITMAPINFOHEADER);
*ppDiData = pDiData;
- // first fill bitmap with gray and image border
+ /* first fill bitmap with gray and image border */
InitBitmap (pDiData, cxWinSize, cyWinSize);
- // then fill bitmap with image
+ /* then fill bitmap with image */
if (pbImage)
{
@@ -762,16 +765,16 @@
return TRUE;
}
-//--------------
-// InitBitmap
-//--------------
-
+/*--------------
+ * InitBitmap
+ *--------------
+ */
BOOL InitBitmap (BYTE *pDiData, int cxWinSize, int cyWinSize)
{
BYTE *dst;
int x, y, col;
- // initialize the background with gray
+ /* initialize the background with gray */
dst = pDiData;
for (y = 0; y < cyWinSize; y++)
@@ -779,13 +782,13 @@
col = 0;
for (x = 0; x < cxWinSize; x++)
{
- // fill with GRAY
+ /* fill with GRAY */
*dst++ = 127;
*dst++ = 127;
*dst++ = 127;
col += 3;
}
- // rows start on 4 byte boundaries
+ /* rows start on 4 byte boundaries */
while ((col % 4) != 0)
{
dst++;
@@ -796,10 +799,10 @@
return TRUE;
}
-//--------------
-// FillBitmap
-//--------------
-
+/*--------------
+ * FillBitmap
+ *--------------
+ */
BOOL FillBitmap (
BYTE *pDiData, int cxWinSize, int cyWinSize,
BYTE *pbImage, int cxImgSize, int cyImgSize, int cImgChannels,
@@ -824,11 +827,12 @@
cxNewSize = cxWinSize - 2 * MARGIN;
cyNewSize = cyWinSize - 2 * MARGIN;
- // stretch the image to it's window determined size
+ /* stretch the image to it's window determined size */
- // the following two are the same, but the first has side-effects
- // because of rounding
-// if ((cyNewSize / cxNewSize) > (cyImgSize / cxImgSize))
+ /* the following two are mathematically the same, but the first
+ * has side-effects because of rounding
+ */
+/* if ((cyNewSize / cxNewSize) > (cyImgSize / cxImgSize)) */
if ((cyNewSize * cxImgSize) > (cyImgSize * cxNewSize))
{
cyNewSize = cxNewSize * cyImgSize / cxImgSize;
@@ -867,12 +871,12 @@
}
}
- // calculate row-bytes
+ /* calculate row-bytes */
wImgRowBytes = cImgChannels * cxNewSize;
wDIRowBytes = (WORD) ((cDIChannels * cxWinSize + 3L) >> 2) << 2;
- // copy image to screen
+ /* copy image to screen */
for (yImg = 0, yWin = cyImgPos; yImg < cyNewSize; yImg++, yWin++)
{
@@ -888,7 +892,7 @@
r = *src++;
g = *src++;
b = *src++;
- *dst++ = b; /* note the reverse order */
+ *dst++ = b; /* note the reverse order */
*dst++ = g;
*dst++ = r;
if (cImgChannels == 4)
@@ -898,7 +902,7 @@
}
}
- // free memory
+ /* free memory */
if (pStretchedImage != NULL)
{
@@ -908,28 +912,28 @@
}
- // process the image not-stretched
+ /* process the image not-stretched */
else
{
- // calculate the central position
+ /* calculate the central position */
cxImgPos = (cxWinSize - cxImgSize) / 2;
cyImgPos = (cyWinSize - cyImgSize) / 2;
- // check for image larger than window
+ /* check for image larger than window */
if (cxImgPos < MARGIN)
cxImgPos = MARGIN;
if (cyImgPos < MARGIN)
cyImgPos = MARGIN;
- // calculate both row-bytes
+ /* calculate both row-bytes */
wImgRowBytes = cImgChannels * cxImgSize;
wDIRowBytes = (WORD) ((cDIChannels * cxWinSize + 3L) >> 2) << 2;
- // copy image to screen
+ /* copy image to screen */
for (yImg = 0, yWin = cyImgPos; yImg < cyImgSize; yImg++, yWin++)
{
@@ -945,7 +949,7 @@
r = *src++;
g = *src++;
b = *src++;
- *dst++ = b; /* note the reverse order */
+ *dst++ = b; /* note the reverse order */
*dst++ = g;
*dst++ = r;
if (cImgChannels == 4)
@@ -959,6 +963,7 @@
return TRUE;
}
-//-----------------
-// end of source
-//-----------------
+/*-----------------
+ * end of source
+ *-----------------
+ */
diff --git a/contrib/visupng/resource.h b/contrib/visupng/resource.h
index 611dd03..b62176d 100644
--- a/contrib/visupng/resource.h
+++ b/contrib/visupng/resource.h
@@ -12,7 +12,7 @@
#define IDM_HELP_ABOUT 40008
// Next default values for new objects
-//
+//
#ifdef APSTUDIO_INVOKED
#ifndef APSTUDIO_READONLY_SYMBOLS
#define _APS_NEXT_RESOURCE_VALUE 113
diff --git a/depcomp b/depcomp
index df8eea7..bd0ac08 100755
--- a/depcomp
+++ b/depcomp
@@ -1,10 +1,10 @@
#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2011-12-04.11; # UTC
-# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
-# Software Foundation, Inc.
+# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2010,
+# 2011 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
@@ -44,7 +44,7 @@
object Object file output by `PROGRAMS ARGS'.
DEPDIR directory where to store dependencies.
depfile Dependency file to output.
- tmpdepfile Temporary file to use when outputing dependencies.
+ tmpdepfile Temporary file to use when outputting dependencies.
libtool Whether libtool is used (yes/no).
Report bugs to <bug-automake@gnu.org>.
@@ -90,10 +90,18 @@
# This is just like msvisualcpp but w/o cygpath translation.
# Just convert the backslash-escaped backslashes to single forward
# slashes to satisfy depend.m4
- cygpath_u="sed s,\\\\\\\\,/,g"
+ cygpath_u='sed s,\\\\,/,g'
depmode=msvisualcpp
fi
+if test "$depmode" = msvc7msys; then
+ # This is just like msvc7 but w/o cygpath translation.
+ # Just convert the backslash-escaped backslashes to single forward
+ # slashes to satisfy depend.m4
+ cygpath_u='sed s,\\\\,/,g'
+ depmode=msvc7
+fi
+
case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
@@ -158,10 +166,12 @@
' < "$tmpdepfile" |
## Some versions of gcc put a space before the `:'. On the theory
## that the space means something, we add a space to the output as
-## well.
+## well. hp depmode also adds that space, but also prefixes the VPATH
+## to the object. Take care to not repeat it in the output.
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
- sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+ sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+ | sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
@@ -405,6 +415,52 @@
rm -f "$tmpdepfile"
;;
+msvc7)
+ if test "$libtool" = yes; then
+ showIncludes=-Wc,-showIncludes
+ else
+ showIncludes=-showIncludes
+ fi
+ "$@" $showIncludes > "$tmpdepfile"
+ stat=$?
+ grep -v '^Note: including file: ' "$tmpdepfile"
+ if test "$stat" = 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+ echo "$object : \\" > "$depfile"
+ # The first sed program below extracts the file names and escapes
+ # backslashes for cygpath. The second sed program outputs the file
+ # name when reading, but also accumulates all include files in the
+ # hold buffer in order to output them again at the end. This only
+ # works with sed implementations that can handle large buffers.
+ sed < "$tmpdepfile" -n '
+/^Note: including file: *\(.*\)/ {
+ s//\1/
+ s/\\/\\\\/g
+ p
+}' | $cygpath_u | sort -u | sed -n '
+s/ /\\ /g
+s/\(.*\)/ \1 \\/p
+s/.\(.*\) \\/\1:/
+H
+$ {
+ s/.*/ /
+ G
+ p
+}' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+msvc7msys)
+ # This case exists only to let depend.m4 do its work. It works by
+ # looking at the text of this script. This case will never be run,
+ # since it is checked for above.
+ exit 1
+ ;;
+
#nosideeffect)
# This comment above is used by automake to tell side-effect
# dependency tracking mechanisms from slower ones.
@@ -503,7 +559,9 @@
touch "$tmpdepfile"
${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
rm -f "$depfile"
- cat < "$tmpdepfile" > "$depfile"
+ # makedepend may prepend the VPATH from the source file name to the object.
+ # No need to regex-escape $object, excess matching of '.' is harmless.
+ sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
sed '1,2d' "$tmpdepfile" | tr ' ' '
' | \
## Some versions of the HPUX 10.20 sed can't process this invocation
diff --git a/example.c b/example.c
index d739173..ec53a8c 100644
--- a/example.c
+++ b/example.c
@@ -2,18 +2,19 @@
#if 0 /* in case someone actually tries to compile this */
/* example.c - an example of using libpng
- * Last changed in libpng 1.4.2 [May 6, 2010]
- * This file has been placed in the public domain by the authors.
- * Maintained 1998-2010 Glenn Randers-Pehrson
- * Maintained 1996, 1997 Andreas Dilger)
- * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Last changed in libpng 1.5.7 [December 15, 2011]
+ * Maintained 1998-2011 Glenn Randers-Pehrson
+ * Maintained 1996, 1997 Andreas Dilger
+ * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
*/
/* This is an example of how to use libpng to read and write PNG files.
- * The file libpng.txt is much more verbose then this. If you have not
+ * The file libpng-manual.txt is much more verbose then this. If you have not
* read it, do so first. This was designed to be a starting point of an
* implementation. This is not officially part of libpng, is hereby placed
* in the public domain, and therefore does not require a copyright notice.
+ * To the extent possible under law, the authors have waived all copyright and
+ * related or neighboring rights to this file.
*
* This file does not currently compile, because it is missing certain
* parts, like allocating memory to hold an image. You will have to
@@ -22,6 +23,10 @@
* see also the programs in the contrib directory.
*/
+#define _POSIX_SOURCE 1 /* libpng and zlib are POSIX-compliant. You may
+ * change this if your application uses non-POSIX
+ * extensions. */
+
#include "png.h"
/* The png_jmpbuf() macro, used in error handling, became available in
@@ -31,7 +36,7 @@
*/
#ifndef png_jmpbuf
-# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
+# define png_jmpbuf(png_ptr) ((png_ptr)->png_jmpbuf)
#endif
/* Check to see if a file is a PNG file using png_sig_cmp(). png_sig_cmp()
@@ -183,8 +188,15 @@
* are mutually exclusive.
*/
- /* Tell libpng to strip 16 bit/color files down to 8 bits/color */
+ /* Tell libpng to strip 16 bit/color files down to 8 bits/color.
+ * Use accurate scaling if it's available, otherwise just chop off the
+ * low byte.
+ */
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ png_set_scale_16(png_ptr);
+#else
png_set_strip_16(png_ptr);
+#endif
/* Strip alpha bytes from the input data without combining with the
* background (not recommended).
@@ -286,7 +298,6 @@
/* An array of colors to which the image should be quantized */
png_color std_color_cube[MAX_SCREEN_COLORS];
- /* Prior to libpng-1.4.2, this was png_set_dither(). */
png_set_quantize(png_ptr, std_color_cube, MAX_SCREEN_COLORS,
MAX_SCREEN_COLORS, NULL, 0);
}
@@ -331,11 +342,16 @@
/* Add filler (or alpha) byte (before/after each RGB triplet) */
png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER);
+#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Turn on interlace handling. REQUIRED if you are not using
* png_read_image(). To see how to handle interlacing passes,
* see the png_read_row() method below:
*/
number_passes = png_set_interlace_handling(png_ptr);
+#else
+ number_passes = 1;
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+
/* Optional call to gamma correct and add the background to the palette
* and update info structure. REQUIRED if you are expecting libpng to
@@ -517,6 +533,7 @@
*/
png_bytep old_row = ((png_bytep *)our_data)[row_num];
+#ifdef PNG_READ_INTERLACING_SUPPORTED
/* If both rows are allocated then copy the new row
* data to the corresponding row data.
*/
@@ -545,6 +562,7 @@
* to pass the current row as new_row, and the function will combine
* the old row and the new row.
*/
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
}
end_callback(png_structp png_ptr, png_infop info)
@@ -656,14 +674,18 @@
/* Optional significant bit (sBIT) chunk */
png_color_8 sig_bit;
+
/* If we are dealing with a grayscale image then */
sig_bit.gray = true_bit_depth;
+
/* Otherwise, if we are dealing with a color image then */
sig_bit.red = true_red_bit_depth;
sig_bit.green = true_green_bit_depth;
sig_bit.blue = true_blue_bit_depth;
+
/* If the image has an alpha channel then */
sig_bit.alpha = true_alpha_bit_depth;
+
png_set_sBIT(png_ptr, info_ptr, &sig_bit);
@@ -676,20 +698,21 @@
text_ptr[0].key = "Title";
text_ptr[0].text = "Mona Lisa";
text_ptr[0].compression = PNG_TEXT_COMPRESSION_NONE;
+ text_ptr[0].itxt_length = 0;
+ text_ptr[0].lang = NULL;
+ text_ptr[0].lang_key = NULL;
text_ptr[1].key = "Author";
text_ptr[1].text = "Leonardo DaVinci";
text_ptr[1].compression = PNG_TEXT_COMPRESSION_NONE;
+ text_ptr[1].itxt_length = 0;
+ text_ptr[1].lang = NULL;
+ text_ptr[1].lang_key = NULL;
text_ptr[2].key = "Description";
text_ptr[2].text = "<long text>";
text_ptr[2].compression = PNG_TEXT_COMPRESSION_zTXt;
-#ifdef PNG_iTXt_SUPPORTED
- text_ptr[0].lang = NULL;
- text_ptr[0].lang_key = NULL;
- text_ptr[1].lang = NULL;
- text_ptr[1].lang_key = NULL;
+ text_ptr[2].itxt_length = 0;
text_ptr[2].lang = NULL;
text_ptr[2].lang_key = NULL;
-#endif
png_set_text(png_ptr, info_ptr, text_ptr, 3);
/* Other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs */
@@ -754,6 +777,7 @@
/* Turn on interlace handling if you are not using png_write_image() */
if (interlacing)
number_passes = png_set_interlace_handling(png_ptr);
+
else
number_passes = 1;
diff --git a/install-sh b/install-sh
index 6781b98..a9244eb 100755
--- a/install-sh
+++ b/install-sh
@@ -1,7 +1,7 @@
#!/bin/sh
# install - install a program, script, or datafile
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2011-01-19.21; # UTC
# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
@@ -156,6 +156,10 @@
-s) stripcmd=$stripprog;;
-t) dst_arg=$2
+ # Protect names problematic for `test' and other utilities.
+ case $dst_arg in
+ -* | [=\(\)!]) dst_arg=./$dst_arg;;
+ esac
shift;;
-T) no_target_directory=true;;
@@ -186,6 +190,10 @@
fi
shift # arg
dst_arg=$arg
+ # Protect names problematic for `test' and other utilities.
+ case $dst_arg in
+ -* | [=\(\)!]) dst_arg=./$dst_arg;;
+ esac
done
fi
@@ -200,7 +208,11 @@
fi
if test -z "$dir_arg"; then
- trap '(exit $?); exit' 1 2 13 15
+ do_exit='(exit $ret); exit $ret'
+ trap "ret=129; $do_exit" 1
+ trap "ret=130; $do_exit" 2
+ trap "ret=141; $do_exit" 13
+ trap "ret=143; $do_exit" 15
# Set umask so as not to create temps with too-generous modes.
# However, 'strip' requires both read and write access to temps.
@@ -228,9 +240,9 @@
for src
do
- # Protect names starting with `-'.
+ # Protect names problematic for `test' and other utilities.
case $src in
- -*) src=./$src;;
+ -* | [=\(\)!]) src=./$src;;
esac
if test -n "$dir_arg"; then
@@ -252,12 +264,7 @@
echo "$0: no destination specified." >&2
exit 1
fi
-
dst=$dst_arg
- # Protect names starting with `-'.
- case $dst in
- -*) dst=./$dst;;
- esac
# If destination is a directory, append the input filename; won't work
# if double slashes aren't ignored.
@@ -385,7 +392,7 @@
case $dstdir in
/*) prefix='/';;
- -*) prefix='./';;
+ [-=\(\)!]*) prefix='./';;
*) prefix='';;
esac
@@ -403,7 +410,7 @@
for d
do
- test -z "$d" && continue
+ test X"$d" = X && continue
prefix=$prefix$d
if test -d "$prefix"; then
diff --git a/libpng-config.in b/libpng-config.in
index 2987cef..69bf8e3 100755
--- a/libpng-config.in
+++ b/libpng-config.in
@@ -104,8 +104,8 @@
;;
--ldopts)
- echo ${ldopts}
- ;;
+ echo ${ldopts}
+ ;;
--ldflags)
echo ${ldopts} ${L_opts} ${R_opts} ${libs}
@@ -113,7 +113,7 @@
--static)
R_opts=""
- libs=${all_libs}
+ libs=${all_libs}
;;
*)
diff --git a/libpng-manual.txt b/libpng-manual.txt
new file mode 100644
index 0000000..7715225
--- /dev/null
+++ b/libpng-manual.txt
@@ -0,0 +1,4628 @@
+libpng-manual.txt - A description on how to use and modify libpng
+
+ libpng version 1.5.10beta01 - February 19, 2012
+ Updated and distributed by Glenn Randers-Pehrson
+ <glennrp at users.sourceforge.net>
+ Copyright (c) 1998-2011 Glenn Randers-Pehrson
+
+ This document is released under the libpng license.
+ For conditions of distribution and use, see the disclaimer
+ and license in png.h
+
+ Based on:
+
+ libpng versions 0.97, January 1998, through 1.5.10beta01 - February 19, 2012
+ Updated and distributed by Glenn Randers-Pehrson
+ Copyright (c) 1998-2011 Glenn Randers-Pehrson
+
+ libpng 1.0 beta 6 version 0.96 May 28, 1997
+ Updated and distributed by Andreas Dilger
+ Copyright (c) 1996, 1997 Andreas Dilger
+
+ libpng 1.0 beta 2 - version 0.88 January 26, 1996
+ For conditions of distribution and use, see copyright
+ notice in png.h. Copyright (c) 1995, 1996 Guy Eric
+ Schalnat, Group 42, Inc.
+
+ Updated/rewritten per request in the libpng FAQ
+ Copyright (c) 1995, 1996 Frank J. T. Wojcik
+ December 18, 1995 & January 20, 1996
+
+I. Introduction
+
+This file describes how to use and modify the PNG reference library
+(known as libpng) for your own use. There are five sections to this
+file: introduction, structures, reading, writing, and modification and
+configuration notes for various special platforms. In addition to this
+file, example.c is a good starting point for using the library, as
+it is heavily commented and should include everything most people
+will need. We assume that libpng is already installed; see the
+INSTALL file for instructions on how to install libpng.
+
+For examples of libpng usage, see the files "example.c", "pngtest.c",
+and the files in the "contrib" directory, all of which are included in
+the libpng distribution.
+
+Libpng was written as a companion to the PNG specification, as a way
+of reducing the amount of time and effort it takes to support the PNG
+file format in application programs.
+
+The PNG specification (second edition), November 2003, is available as
+a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2003 (E)) at
+<http://www.w3.org/TR/2003/REC-PNG-20031110/
+The W3C and ISO documents have identical technical content.
+
+The PNG-1.2 specification is available at
+<http://www.libpng.org/pub/png/documents/>. It is technically equivalent
+to the PNG specification (second edition) but has some additional material.
+
+The PNG-1.0 specification is available
+as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
+W3C Recommendation <http://www.w3.org/TR/REC.png.html>.
+
+Some additional chunks are described in the special-purpose public chunks
+documents at <http://www.libpng.org/pub/png/documents/>.
+
+Other information
+about PNG, and the latest version of libpng, can be found at the PNG home
+page, <http://www.libpng.org/pub/png/>.
+
+Most users will not have to modify the library significantly; advanced
+users may want to modify it more. All attempts were made to make it as
+complete as possible, while keeping the code easy to understand.
+Currently, this library only supports C. Support for other languages
+is being considered.
+
+Libpng has been designed to handle multiple sessions at one time,
+to be easily modifiable, to be portable to the vast majority of
+machines (ANSI, K&R, 16-, 32-, and 64-bit) available, and to be easy
+to use. The ultimate goal of libpng is to promote the acceptance of
+the PNG file format in whatever way possible. While there is still
+work to be done (see the TODO file), libpng should cover the
+majority of the needs of its users.
+
+Libpng uses zlib for its compression and decompression of PNG files.
+Further information about zlib, and the latest version of zlib, can
+be found at the zlib home page, <http://www.info-zip.org/pub/infozip/zlib/>.
+The zlib compression utility is a general purpose utility that is
+useful for more than PNG files, and can be used without libpng.
+See the documentation delivered with zlib for more details.
+You can usually find the source files for the zlib utility wherever you
+find the libpng source files.
+
+Libpng is thread safe, provided the threads are using different
+instances of the structures. Each thread should have its own
+png_struct and png_info instances, and thus its own image.
+Libpng does not protect itself against two threads using the
+same instance of a structure.
+
+II. Structures
+
+There are two main structures that are important to libpng, png_struct
+and png_info. Both are internal structures that are no longer exposed
+in the libpng interface (as of libpng 1.5.0).
+
+The png_info structure is designed to provide information about the
+PNG file. At one time, the fields of png_info were intended to be
+directly accessible to the user. However, this tended to cause problems
+with applications using dynamically loaded libraries, and as a result
+a set of interface functions for png_info (the png_get_*() and png_set_*()
+functions) was developed, and direct access to the png_info fields was
+deprecated..
+
+The png_struct structure is the object used by the library to decode a
+single image. As of 1.5.0 this structure is also not exposed.
+
+Almost all libpng APIs require a pointer to a png_struct as the first argument.
+Many (in particular the png_set and png_get APIs) also require a pointer
+to png_info as the second argument. Some application visible macros
+defined in png.h designed for basic data access (reading and writing
+integers in the PNG format) don't take a png_info pointer, but it's almost
+always safe to assume that a (png_struct*) has to be passed to call an API
+function.
+
+You can have more than one png_info structure associated with an image,
+as illustrated in pngtest.c, one for information valid prior to the
+IDAT chunks and another (called "end_info" below) for things after them.
+
+The png.h header file is an invaluable reference for programming with libpng.
+And while I'm on the topic, make sure you include the libpng header file:
+
+#include <png.h>
+
+and also (as of libpng-1.5.0) the zlib header file, if you need it:
+
+#include <zlib.h>
+
+Types
+
+The png.h header file defines a number of integral types used by the
+APIs. Most of these are fairly obvious; for example types corresponding
+to integers of particular sizes and types for passing color values.
+
+One exception is how non-integral numbers are handled. For application
+convenience most APIs that take such numbers have C (double) arguments,
+however internally PNG, and libpng, use 32 bit signed integers and encode
+the value by multiplying by 100,000. As of libpng 1.5.0 a convenience
+macro PNG_FP_1 is defined in png.h along with a type (png_fixed_point)
+which is simply (png_int_32).
+
+All APIs that take (double) arguments also have a matching API that
+takes the corresponding fixed point integer arguments. The fixed point
+API has the same name as the floating point one with "_fixed" appended.
+The actual range of values permitted in the APIs is frequently less than
+the full range of (png_fixed_point) (-21474 to +21474). When APIs require
+a non-negative argument the type is recorded as png_uint_32 above. Consult
+the header file and the text below for more information.
+
+Special care must be take with sCAL chunk handling because the chunk itself
+uses non-integral values encoded as strings containing decimal floating point
+numbers. See the comments in the header file.
+
+Configuration
+
+The main header file function declarations are frequently protected by C
+preprocessing directives of the form:
+
+ #ifdef PNG_feature_SUPPORTED
+ declare-function
+ #endif
+ ...
+ #ifdef PNG_feature_SUPPORTED
+ use-function
+ #endif
+
+The library can be built without support for these APIs, although a
+standard build will have all implemented APIs. Application programs
+should check the feature macros before using an API for maximum
+portability. From libpng 1.5.0 the feature macros set during the build
+of libpng are recorded in the header file "pnglibconf.h" and this file
+is always included by png.h.
+
+If you don't need to change the library configuration from the default, skip to
+the next section ("Reading").
+
+Notice that some of the makefiles in the 'scripts' directory and (in 1.5.0) all
+of the build project files in the 'projects' directory simply copy
+scripts/pnglibconf.h.prebuilt to pnglibconf.h. This means that these build
+systems do not permit easy auto-configuration of the library - they only
+support the default configuration.
+
+The easiest way to make minor changes to the libpng configuration when
+auto-configuration is supported is to add definitions to the command line
+using (typically) CPPFLAGS. For example:
+
+CPPFLAGS=-DPNG_NO_FLOATING_ARITHMETIC
+
+will change the internal libpng math implementation for gamma correction and
+other arithmetic calculations to fixed point, avoiding the need for fast
+floating point support. The result can be seen in the generated pnglibconf.h -
+make sure it contains the changed feature macro setting.
+
+If you need to make more extensive configuration changes - more than one or two
+feature macro settings - you can either add -DPNG_USER_CONFIG to the build
+command line and put a list of feature macro settings in pngusr.h or you can set
+DFA_XTRA (a makefile variable) to a file containing the same information in the
+form of 'option' settings.
+
+A. Changing pnglibconf.h
+
+A variety of methods exist to build libpng. Not all of these support
+reconfiguration of pnglibconf.h. To reconfigure pnglibconf.h it must either be
+rebuilt from scripts/pnglibconf.dfa using awk or it must be edited by hand.
+
+Hand editing is achieved by copying scripts/pnglibconf.h.prebuilt to
+pnglibconf.h and changing the lines defining the supported features, paying
+very close attention to the 'option' information in scripts/pnglibconf.dfa
+that describes those features and their requirements. This is easy to get
+wrong.
+
+B. Configuration using DFA_XTRA
+
+Rebuilding from pnglibconf.dfa is easy if a functioning 'awk', or a later
+variant such as 'nawk' or 'gawk', is available. The configure build will
+automatically find an appropriate awk and build pnglibconf.h.
+The scripts/pnglibconf.mak file contains a set of make rules for doing the
+same thing if configure is not used, and many of the makefiles in the scripts
+directory use this approach.
+
+When rebuilding simply write a new file containing changed options and set
+DFA_XTRA to the name of this file. This causes the build to append the new file
+to the end of scripts/pnglibconf.dfa. The pngusr.dfa file should contain lines
+of the following forms:
+
+everything = off
+
+This turns all optional features off. Include it at the start of pngusr.dfa to
+make it easier to build a minimal configuration. You will need to turn at least
+some features on afterward to enable either reading or writing code, or both.
+
+option feature on
+option feature off
+
+Enable or disable a single feature. This will automatically enable other
+features required by a feature that is turned on or disable other features that
+require a feature which is turned off. Conflicting settings will cause an error
+message to be emitted by awk.
+
+setting feature default value
+
+Changes the default value of setting 'feature' to 'value'. There are a small
+number of settings listed at the top of pnglibconf.h, they are documented in the
+source code. Most of these values have performance implications for the library
+but most of them have no visible effect on the API. Some can also be overridden
+from the API.
+
+This method of building a customized pnglibconf.h is illustrated in
+contrib/pngminim/*. See the "$(PNGCONF):" target in the makefile and
+pngusr.dfa in these directories.
+
+C. Configuration using PNG_USR_CONFIG
+
+If -DPNG_USR_CONFIG is added to the CFLAGS when pnglibconf.h is built the file
+pngusr.h will automatically be included before the options in
+scripts/pnglibconf.dfa are processed. Your pngusr.h file should contain only
+macro definitions turning features on or off or setting settings.
+
+Apart from the global setting "everything = off" all the options listed above
+can be set using macros in pngusr.h:
+
+#define PNG_feature_SUPPORTED
+
+is equivalent to:
+
+option feature on
+
+#define PNG_NO_feature
+
+is equivalent to:
+
+option feature off
+
+#define PNG_feature value
+
+is equivalent to:
+
+setting feature default value
+
+Notice that in both cases, pngusr.dfa and pngusr.h, the contents of the
+pngusr file you supply override the contents of scripts/pnglibconf.dfa
+
+If confusing or incomprehensible behavior results it is possible to
+examine the intermediate file pnglibconf.dfn to find the full set of
+dependency information for each setting and option. Simply locate the
+feature in the file and read the C comments that precede it.
+
+This method is also illustrated in the contrib/pngminim/* makefiles and
+pngusr.h.
+
+III. Reading
+
+We'll now walk you through the possible functions to call when reading
+in a PNG file sequentially, briefly explaining the syntax and purpose
+of each one. See example.c and png.h for more detail. While
+progressive reading is covered in the next section, you will still
+need some of the functions discussed in this section to read a PNG
+file.
+
+Setup
+
+You will want to do the I/O initialization(*) before you get into libpng,
+so if it doesn't work, you don't have much to undo. Of course, you
+will also want to insure that you are, in fact, dealing with a PNG
+file. Libpng provides a simple check to see if a file is a PNG file.
+To use it, pass in the first 1 to 8 bytes of the file to the function
+png_sig_cmp(), and it will return 0 (false) if the bytes match the
+corresponding bytes of the PNG signature, or nonzero (true) otherwise.
+Of course, the more bytes you pass in, the greater the accuracy of the
+prediction.
+
+If you are intending to keep the file pointer open for use in libpng,
+you must ensure you don't read more than 8 bytes from the beginning
+of the file, and you also have to make a call to png_set_sig_bytes_read()
+with the number of bytes you read from the beginning. Libpng will
+then only check the bytes (if any) that your program didn't read.
+
+(*): If you are not using the standard I/O functions, you will need
+to replace them with custom functions. See the discussion under
+Customizing libpng.
+
+
+ FILE *fp = fopen(file_name, "rb");
+ if (!fp)
+ {
+ return (ERROR);
+ }
+
+ fread(header, 1, number, fp);
+ is_png = !png_sig_cmp(header, 0, number);
+
+ if (!is_png)
+ {
+ return (NOT_PNG);
+ }
+
+
+Next, png_struct and png_info need to be allocated and initialized. In
+order to ensure that the size of these structures is correct even with a
+dynamically linked libpng, there are functions to initialize and
+allocate the structures. We also pass the library version, optional
+pointers to error handling functions, and a pointer to a data struct for
+use by the error functions, if necessary (the pointer and functions can
+be NULL if the default error handlers are to be used). See the section
+on Changes to Libpng below regarding the old initialization functions.
+The structure allocation functions quietly return NULL if they fail to
+create the structure, so your application should check for that.
+
+ png_structp png_ptr = png_create_read_struct
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn);
+
+ if (!png_ptr)
+ return (ERROR);
+
+ png_infop info_ptr = png_create_info_struct(png_ptr);
+
+ if (!info_ptr)
+ {
+ png_destroy_read_struct(&png_ptr,
+ (png_infopp)NULL, (png_infopp)NULL);
+ return (ERROR);
+ }
+
+If you want to use your own memory allocation routines,
+use a libpng that was built with PNG_USER_MEM_SUPPORTED defined, and use
+png_create_read_struct_2() instead of png_create_read_struct():
+
+ png_structp png_ptr = png_create_read_struct_2
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn, (png_voidp)
+ user_mem_ptr, user_malloc_fn, user_free_fn);
+
+The error handling routines passed to png_create_read_struct()
+and the memory alloc/free routines passed to png_create_struct_2()
+are only necessary if you are not using the libpng supplied error
+handling and memory alloc/free functions.
+
+When libpng encounters an error, it expects to longjmp back
+to your routine. Therefore, you will need to call setjmp and pass
+your png_jmpbuf(png_ptr). If you read the file from different
+routines, you will need to update the longjmp buffer every time you enter
+a new routine that will call a png_*() function.
+
+See your documentation of setjmp/longjmp for your compiler for more
+information on setjmp/longjmp. See the discussion on libpng error
+handling in the Customizing Libpng section below for more information
+on the libpng error handling. If an error occurs, and libpng longjmp's
+back to your setjmp, you will want to call png_destroy_read_struct() to
+free any memory.
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ &end_info);
+ fclose(fp);
+ return (ERROR);
+ }
+
+Pass (png_infopp)NULL instead of &end_info if you didn't create
+an end_info structure.
+
+If you would rather avoid the complexity of setjmp/longjmp issues,
+you can compile libpng with PNG_NO_SETJMP, in which case
+errors will result in a call to PNG_ABORT() which defaults to abort().
+
+You can #define PNG_ABORT() to a function that does something
+more useful than abort(), as long as your function does not
+return.
+
+Now you need to set up the input code. The default for libpng is to
+use the C function fread(). If you use this, you will need to pass a
+valid FILE * in the function png_init_io(). Be sure that the file is
+opened in binary mode. If you wish to handle reading data in another
+way, you need not call the png_init_io() function, but you must then
+implement the libpng I/O methods discussed in the Customizing Libpng
+section below.
+
+ png_init_io(png_ptr, fp);
+
+If you had previously opened the file and read any of the signature from
+the beginning in order to see if this was a PNG file, you need to let
+libpng know that there are some bytes missing from the start of the file.
+
+ png_set_sig_bytes(png_ptr, number);
+
+You can change the zlib compression buffer size to be used while
+reading compressed data with
+
+ png_set_compression_buffer_size(png_ptr, buffer_size);
+
+where the default size is 8192 bytes. Note that the buffer size
+is changed immediately and the buffer is reallocated immediately,
+instead of setting a flag to be acted upon later.
+
+If you want CRC errors to be handled in a different manner than
+the default, use
+
+ png_set_crc_action(png_ptr, crit_action, ancil_action);
+
+The values for png_set_crc_action() say how libpng is to handle CRC errors in
+ancillary and critical chunks, and whether to use the data contained
+therein. Note that it is impossible to "discard" data in a critical
+chunk.
+
+Choices for (int) crit_action are
+ PNG_CRC_DEFAULT 0 error/quit
+ PNG_CRC_ERROR_QUIT 1 error/quit
+ PNG_CRC_WARN_USE 3 warn/use data
+ PNG_CRC_QUIET_USE 4 quiet/use data
+ PNG_CRC_NO_CHANGE 5 use the current value
+
+Choices for (int) ancil_action are
+ PNG_CRC_DEFAULT 0 error/quit
+ PNG_CRC_ERROR_QUIT 1 error/quit
+ PNG_CRC_WARN_DISCARD 2 warn/discard data
+ PNG_CRC_WARN_USE 3 warn/use data
+ PNG_CRC_QUIET_USE 4 quiet/use data
+ PNG_CRC_NO_CHANGE 5 use the current value
+
+Setting up callback code
+
+You can set up a callback function to handle any unknown chunks in the
+input stream. You must supply the function
+
+ read_chunk_callback(png_structp png_ptr,
+ png_unknown_chunkp chunk);
+ {
+ /* The unknown chunk structure contains your
+ chunk data, along with similar data for any other
+ unknown chunks: */
+
+ png_byte name[5];
+ png_byte *data;
+ png_size_t size;
+
+ /* Note that libpng has already taken care of
+ the CRC handling */
+
+ /* put your code here. Search for your chunk in the
+ unknown chunk structure, process it, and return one
+ of the following: */
+
+ return (-n); /* chunk had an error */
+ return (0); /* did not recognize */
+ return (n); /* success */
+ }
+
+(You can give your function another name that you like instead of
+"read_chunk_callback")
+
+To inform libpng about your function, use
+
+ png_set_read_user_chunk_fn(png_ptr, user_chunk_ptr,
+ read_chunk_callback);
+
+This names not only the callback function, but also a user pointer that
+you can retrieve with
+
+ png_get_user_chunk_ptr(png_ptr);
+
+If you call the png_set_read_user_chunk_fn() function, then all unknown
+chunks will be saved when read, in case your callback function will need
+one or more of them. This behavior can be changed with the
+png_set_keep_unknown_chunks() function, described below.
+
+At this point, you can set up a callback function that will be
+called after each row has been read, which you can use to control
+a progress meter or the like. It's demonstrated in pngtest.c.
+You must supply a function
+
+ void read_row_callback(png_structp png_ptr,
+ png_uint_32 row, int pass);
+ {
+ /* put your code here */
+ }
+
+(You can give it another name that you like instead of "read_row_callback")
+
+To inform libpng about your function, use
+
+ png_set_read_status_fn(png_ptr, read_row_callback);
+
+When this function is called the row has already been completely processed and
+the 'row' and 'pass' refer to the next row to be handled. For the
+non-interlaced case the row that was just handled is simply one less than the
+passed in row number, and pass will always be 0. For the interlaced case the
+same applies unless the row value is 0, in which case the row just handled was
+the last one from one of the preceding passes. Because interlacing may skip a
+pass you cannot be sure that the preceding pass is just 'pass-1', if you really
+need to know what the last pass is record (row,pass) from the callback and use
+the last recorded value each time.
+
+As with the user transform you can find the output row using the
+PNG_ROW_FROM_PASS_ROW macro.
+
+Unknown-chunk handling
+
+Now you get to set the way the library processes unknown chunks in the
+input PNG stream. Both known and unknown chunks will be read. Normal
+behavior is that known chunks will be parsed into information in
+various info_ptr members while unknown chunks will be discarded. This
+behavior can be wasteful if your application will never use some known
+chunk types. To change this, you can call:
+
+ png_set_keep_unknown_chunks(png_ptr, keep,
+ chunk_list, num_chunks);
+ keep - 0: default unknown chunk handling
+ 1: ignore; do not keep
+ 2: keep only if safe-to-copy
+ 3: keep even if unsafe-to-copy
+
+ You can use these definitions:
+ PNG_HANDLE_CHUNK_AS_DEFAULT 0
+ PNG_HANDLE_CHUNK_NEVER 1
+ PNG_HANDLE_CHUNK_IF_SAFE 2
+ PNG_HANDLE_CHUNK_ALWAYS 3
+
+ chunk_list - list of chunks affected (a byte string,
+ five bytes per chunk, NULL or '\0' if
+ num_chunks is 0)
+
+ num_chunks - number of chunks affected; if 0, all
+ unknown chunks are affected. If nonzero,
+ only the chunks in the list are affected
+
+Unknown chunks declared in this way will be saved as raw data onto a
+list of png_unknown_chunk structures. If a chunk that is normally
+known to libpng is named in the list, it will be handled as unknown,
+according to the "keep" directive. If a chunk is named in successive
+instances of png_set_keep_unknown_chunks(), the final instance will
+take precedence. The IHDR and IEND chunks should not be named in
+chunk_list; if they are, libpng will process them normally anyway.
+If you know that your application will never make use of some particular
+chunks, use PNG_HANDLE_CHUNK_NEVER (or 1) as demonstrated below.
+
+Here is an example of the usage of png_set_keep_unknown_chunks(),
+where the private "vpAg" chunk will later be processed by a user chunk
+callback function:
+
+ png_byte vpAg[5]={118, 112, 65, 103, (png_byte) '\0'};
+
+ #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+ png_byte unused_chunks[]=
+ {
+ 104, 73, 83, 84, (png_byte) '\0', /* hIST */
+ 105, 84, 88, 116, (png_byte) '\0', /* iTXt */
+ 112, 67, 65, 76, (png_byte) '\0', /* pCAL */
+ 115, 67, 65, 76, (png_byte) '\0', /* sCAL */
+ 115, 80, 76, 84, (png_byte) '\0', /* sPLT */
+ 116, 73, 77, 69, (png_byte) '\0', /* tIME */
+ };
+ #endif
+
+ ...
+
+ #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+ /* ignore all unknown chunks: */
+ png_set_keep_unknown_chunks(read_ptr, 1, NULL, 0);
+
+ /* except for vpAg: */
+ png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
+
+ /* also ignore unused known chunks: */
+ png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
+ (int)sizeof(unused_chunks)/5);
+ #endif
+
+User limits
+
+The PNG specification allows the width and height of an image to be as
+large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
+Since very few applications really need to process such large images,
+we have imposed an arbitrary 1-million limit on rows and columns.
+Larger images will be rejected immediately with a png_error() call. If
+you wish to change this limit, you can use
+
+ png_set_user_limits(png_ptr, width_max, height_max);
+
+to set your own limits, or use width_max = height_max = 0x7fffffffL
+to allow all valid dimensions (libpng may reject some very large images
+anyway because of potential buffer overflow conditions).
+
+You should put this statement after you create the PNG structure and
+before calling png_read_info(), png_read_png(), or png_process_data().
+
+When writing a PNG datastream, put this statement before calling
+png_write_info() or png_write_png().
+
+If you need to retrieve the limits that are being applied, use
+
+ width_max = png_get_user_width_max(png_ptr);
+ height_max = png_get_user_height_max(png_ptr);
+
+The PNG specification sets no limit on the number of ancillary chunks
+allowed in a PNG datastream. You can impose a limit on the total number
+of sPLT, tEXt, iTXt, zTXt, and unknown chunks that will be stored, with
+
+ png_set_chunk_cache_max(png_ptr, user_chunk_cache_max);
+
+where 0x7fffffffL means unlimited. You can retrieve this limit with
+
+ chunk_cache_max = png_get_chunk_cache_max(png_ptr);
+
+This limit also applies to the number of buffers that can be allocated
+by png_decompress_chunk() while decompressing iTXt, zTXt, and iCCP chunks.
+
+You can also set a limit on the amount of memory that a compressed chunk
+other than IDAT can occupy, with
+
+ png_set_chunk_malloc_max(png_ptr, user_chunk_malloc_max);
+
+and you can retrieve the limit with
+
+ chunk_malloc_max = png_get_chunk_malloc_max(png_ptr);
+
+Any chunks that would cause either of these limits to be exceeded will
+be ignored.
+
+Information about your system
+
+If you intend to display the PNG or to incorporate it in other image data you
+need to tell libpng information about your display or drawing surface so that
+libpng can convert the values in the image to match the display.
+
+From libpng-1.5.4 this information can be set before reading the PNG file
+header. In earlier versions png_set_gamma() existed but behaved incorrectly if
+called before the PNG file header had been read and png_set_alpha_mode() did not
+exist.
+
+If you need to support versions prior to libpng-1.5.4 test the version number
+as illustrated below using "PNG_LIBPNG_VER >= 10504" and follow the procedures
+described in the appropriate manual page.
+
+You give libpng the encoding expected by your system expressed as a 'gamma'
+value. You can also specify a default encoding for the PNG file in
+case the required information is missing from the file. By default libpng
+assumes that the PNG data matches your system, to keep this default call:
+
+ png_set_gamma(png_ptr, screen_gamma, 1/screen_gamma/*file gamma*/);
+
+or you can use the fixed point equivalent:
+
+ png_set_gamma_fixed(png_ptr, PNG_FP_1*screen_gamma, PNG_FP_1/screen_gamma);
+
+If you don't know the gamma for your system it is probably 2.2 - a good
+approximation to the IEC standard for display systems (sRGB). If images are
+too contrasty or washed out you got the value wrong - check your system
+documentation!
+
+Many systems permit the system gamma to be changed via a lookup table in the
+display driver, a few systems, including older Macs, change the response by
+default. As of 1.5.4 three special values are available to handle common
+situations:
+
+ PNG_DEFAULT_sRGB: Indicates that the system conforms to the IEC 61966-2-1
+ standard. This matches almost all systems.
+ PNG_GAMMA_MAC_18: Indicates that the system is an older (pre Mac OS 10.6)
+ Apple Macintosh system with the default settings.
+ PNG_GAMMA_LINEAR: Just the fixed point value for 1.0 - indicates that the
+ system expects data with no gamma encoding.
+
+You would use the linear (unencoded) value if you need to process the pixel
+values further because this avoids the need to decode and reencode each
+component value whenever arithmetic is performed. A lot of graphics software
+uses linear values for this reason, often with higher precision component values
+to preserve overall accuracy.
+
+The second thing you may need to tell libpng about is how your system handles
+alpha channel information. Some, but not all, PNG files contain an alpha
+channel. To display these files correctly you need to compose the data onto a
+suitable background, as described in the PNG specification.
+
+Libpng only supports composing onto a single color (using png_set_background;
+see below). Otherwise you must do the composition yourself and, in this case,
+you may need to call png_set_alpha_mode:
+
+#if PNG_LIBPNG_VER >= 10504
+ png_set_alpha_mode(png_ptr, mode, screen_gamma);
+#else
+ png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
+#endif
+
+The screen_gamma value is the same as the argument to png_set_gamma; however,
+how it affects the output depends on the mode. png_set_alpha_mode() sets the
+file gamma default to 1/screen_gamma, so normally you don't need to call
+png_set_gamma. If you need different defaults call png_set_gamma() before
+png_set_alpha_mode() - if you call it after it will override the settings made
+by png_set_alpha_mode().
+
+The mode is as follows:
+
+ PNG_ALPHA_PNG: The data is encoded according to the PNG specification. Red,
+green and blue, or gray, components are gamma encoded color
+values and are not premultiplied by the alpha value. The
+alpha value is a linear measure of the contribution of the
+pixel to the corresponding final output pixel.
+
+You should normally use this format if you intend to perform
+color correction on the color values; most, maybe all, color
+correction software has no handling for the alpha channel and,
+anyway, the math to handle pre-multiplied component values is
+unnecessarily complex.
+
+Before you do any arithmetic on the component values you need
+to remove the gamma encoding and multiply out the alpha
+channel. See the PNG specification for more detail. It is
+important to note that when an image with an alpha channel is
+scaled, linear encoded, pre-multiplied component values must
+be used!
+
+The remaining modes assume you don't need to do any further color correction or
+that if you do, your color correction software knows all about alpha (it
+probably doesn't!)
+
+ PNG_ALPHA_STANDARD: The data libpng produces
+is encoded in the standard way
+assumed by most correctly written graphics software.
+The gamma encoding will be removed by libpng and the
+linear component values will be pre-multiplied by the
+alpha channel.
+
+With this format the final image must be re-encoded to
+match the display gamma before the image is displayed.
+If your system doesn't do that, yet still seems to
+perform arithmetic on the pixels without decoding them,
+it is broken - check out the modes below.
+
+With PNG_ALPHA_STANDARD libpng always produces linear
+component values, whatever screen_gamma you supply. The
+screen_gamma value is, however, used as a default for
+the file gamma if the PNG file has no gamma information.
+
+If you call png_set_gamma() after png_set_alpha_mode() you
+will override the linear encoding. Instead the
+pre-multiplied pixel values will be gamma encoded but
+the alpha channel will still be linear. This may
+actually match the requirements of some broken software,
+but it is unlikely.
+
+While linear 8-bit data is often used it has
+insufficient precision for any image with a reasonable
+dynamic range. To avoid problems, and if your software
+supports it, use png_set_expand_16() to force all
+components to 16 bits.
+
+ PNG_ALPHA_OPTIMIZED: This mode is the same
+as PNG_ALPHA_STANDARD except that
+completely opaque pixels are gamma encoded according to
+the screen_gamma value. Pixels with alpha less than 1.0
+will still have linear components.
+
+Use this format if you have control over your
+compositing software and do don't do other arithmetic
+(such as scaling) on the data you get from libpng. Your
+compositing software can simply copy opaque pixels to
+the output but still has linear values for the
+non-opaque pixels.
+
+In normal compositing, where the alpha channel encodes
+partial pixel coverage (as opposed to broad area
+translucency), the inaccuracies of the 8-bit
+representation of non-opaque pixels are irrelevant.
+
+You can also try this format if your software is broken;
+it might look better.
+
+ PNG_ALPHA_BROKEN: This is PNG_ALPHA_STANDARD;
+however, all component values,
+including the alpha channel are gamma encoded. This is
+an appropriate format to try if your software, or more
+likely hardware, is totally broken, i.e., if it performs
+linear arithmetic directly on gamma encoded values.
+
+In most cases of broken software or hardware the bug in the final display
+manifests as a subtle halo around composited parts of the image. You may not
+even perceive this as a halo; the composited part of the image may simply appear
+separate from the background, as though it had been cut out of paper and pasted
+on afterward.
+
+If you don't have to deal with bugs in software or hardware, or if you can fix
+them, there are three recommended ways of using png_set_alpha_mode():
+
+ png_set_alpha_mode(png_ptr, PNG_ALPHA_PNG,
+ screen_gamma);
+
+You can do color correction on the result (libpng does not currently
+support color correction internally). When you handle the alpha channel
+you need to undo the gamma encoding and multiply out the alpha.
+
+ png_set_alpha_mode(png_ptr, PNG_ALPHA_STANDARD,
+ screen_gamma);
+ png_set_expand_16(png_ptr);
+
+If you are using the high level interface, don't call png_set_expand_16();
+instead pass PNG_TRANSFORM_EXPAND_16 to the interface.
+
+With this mode you can't do color correction, but you can do arithmetic,
+including composition and scaling, on the data without further processing.
+
+ png_set_alpha_mode(png_ptr, PNG_ALPHA_OPTIMIZED,
+ screen_gamma);
+
+You can avoid the expansion to 16-bit components with this mode, but you
+lose the ability to scale the image or perform other linear arithmetic.
+All you can do is compose the result onto a matching output. Since this
+mode is libpng-specific you also need to write your own composition
+software.
+
+If you don't need, or can't handle, the alpha channel you can call
+png_set_background() to remove it by compositing against a fixed color. Don't
+call png_set_strip_alpha() to do this - it will leave spurious pixel values in
+transparent parts of this image.
+
+ png_set_background(png_ptr, &background_color,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0, 1);
+
+The background_color is an RGB or grayscale value according to the data format
+libpng will produce for you. Because you don't yet know the format of the PNG
+file, if you call png_set_background at this point you must arrange for the
+format produced by libpng to always have 8-bit or 16-bit components and then
+store the color as an 8-bit or 16-bit color as appropriate. The color contains
+separate gray and RGB component values, so you can let libpng produce gray or
+RGB output according to the input format, but low bit depth grayscale images
+must always be converted to at least 8-bit format. (Even though low bit depth
+grayscale images can't have an alpha channel they can have a transparent
+color!)
+
+You set the transforms you need later, either as flags to the high level
+interface or libpng API calls for the low level interface. For reference the
+settings and API calls required are:
+
+8-bit values:
+ PNG_TRANSFORM_SCALE_16 | PNG_EXPAND
+ png_set_expand(png_ptr); png_set_scale_16(png_ptr);
+
+ If you must get exactly the same inaccurate results
+ produced by default in versions prior to libpng-1.5.4,
+ use PNG_TRANSFORM_STRIP_16 and png_set_strip_16(png_ptr)
+ instead.
+
+16-bit values:
+ PNG_TRANSFORM_EXPAND_16
+ png_set_expand_16(png_ptr);
+
+In either case palette image data will be expanded to RGB. If you just want
+color data you can add PNG_TRANSFORM_GRAY_TO_RGB or png_set_gray_to_rgb(png_ptr)
+to the list.
+
+Calling png_set_background before the PNG file header is read will not work
+prior to libpng-1.5.4. Because the failure may result in unexpected warnings or
+errors it is therefore much safer to call png_set_background after the head has
+been read. Unfortunately this means that prior to libpng-1.5.4 it cannot be
+used with the high level interface.
+
+The high-level read interface
+
+At this point there are two ways to proceed; through the high-level
+read interface, or through a sequence of low-level read operations.
+You can use the high-level interface if (a) you are willing to read
+the entire image into memory, and (b) the input transformations
+you want to do are limited to the following set:
+
+ PNG_TRANSFORM_IDENTITY No transformation
+ PNG_TRANSFORM_SCALE_16 Strip 16-bit samples to
+ 8-bit accurately
+ PNG_TRANSFORM_STRIP_16 Chop 16-bit samples to
+ 8-bit less accurately
+ PNG_TRANSFORM_STRIP_ALPHA Discard the alpha channel
+ PNG_TRANSFORM_PACKING Expand 1, 2 and 4-bit
+ samples to bytes
+ PNG_TRANSFORM_PACKSWAP Change order of packed
+ pixels to LSB first
+ PNG_TRANSFORM_EXPAND Perform set_expand()
+ PNG_TRANSFORM_INVERT_MONO Invert monochrome images
+ PNG_TRANSFORM_SHIFT Normalize pixels to the
+ sBIT depth
+ PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA
+ to BGRA
+ PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA
+ to AG
+ PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
+ to transparency
+ PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
+ PNG_TRANSFORM_GRAY_TO_RGB Expand grayscale samples
+ to RGB (or GA to RGBA)
+ PNG_TRANSFORM_EXPAND_16 Expand samples to 16 bits
+
+(This excludes setting a background color, doing gamma transformation,
+quantizing, and setting filler.) If this is the case, simply do this:
+
+ png_read_png(png_ptr, info_ptr, png_transforms, NULL)
+
+where png_transforms is an integer containing the bitwise OR of some
+set of transformation flags. This call is equivalent to png_read_info(),
+followed the set of transformations indicated by the transform mask,
+then png_read_image(), and finally png_read_end().
+
+(The final parameter of this call is not yet used. Someday it might point
+to transformation parameters required by some future input transform.)
+
+You must use png_transforms and not call any png_set_transform() functions
+when you use png_read_png().
+
+After you have called png_read_png(), you can retrieve the image data
+with
+
+ row_pointers = png_get_rows(png_ptr, info_ptr);
+
+where row_pointers is an array of pointers to the pixel data for each row:
+
+ png_bytep row_pointers[height];
+
+If you know your image size and pixel size ahead of time, you can allocate
+row_pointers prior to calling png_read_png() with
+
+ if (height > PNG_UINT_32_MAX/png_sizeof(png_byte))
+ png_error (png_ptr,
+ "Image is too tall to process in memory");
+
+ if (width > PNG_UINT_32_MAX/pixel_size)
+ png_error (png_ptr,
+ "Image is too wide to process in memory");
+
+ row_pointers = png_malloc(png_ptr,
+ height*png_sizeof(png_bytep));
+
+ for (int i=0; i<height, i++)
+ row_pointers[i]=NULL; /* security precaution */
+
+ for (int i=0; i<height, i++)
+ row_pointers[i]=png_malloc(png_ptr,
+ width*pixel_size);
+
+ png_set_rows(png_ptr, info_ptr, &row_pointers);
+
+Alternatively you could allocate your image in one big block and define
+row_pointers[i] to point into the proper places in your block.
+
+If you use png_set_rows(), the application is responsible for freeing
+row_pointers (and row_pointers[i], if they were separately allocated).
+
+If you don't allocate row_pointers ahead of time, png_read_png() will
+do it, and it'll be free'ed by libpng when you call png_destroy_*().
+
+The low-level read interface
+
+If you are going the low-level route, you are now ready to read all
+the file information up to the actual image data. You do this with a
+call to png_read_info().
+
+ png_read_info(png_ptr, info_ptr);
+
+This will process all chunks up to but not including the image data.
+
+This also copies some of the data from the PNG file into the decode structure
+for use in later transformations. Important information copied in is:
+
+1) The PNG file gamma from the gAMA chunk. This overwrites the default value
+provided by an earlier call to png_set_gamma or png_set_alpha_mode.
+
+2) Prior to libpng-1.5.4 the background color from a bKGd chunk. This
+damages the information provided by an earlier call to png_set_background
+resulting in unexpected behavior. Libpng-1.5.4 no longer does this.
+
+3) The number of significant bits in each component value. Libpng uses this to
+optimize gamma handling by reducing the internal lookup table sizes.
+
+4) The transparent color information from a tRNS chunk. This can be modified by
+a later call to png_set_tRNS.
+
+Querying the info structure
+
+Functions are used to get the information from the info_ptr once it
+has been read. Note that these fields may not be completely filled
+in until png_read_end() has read the chunk data following the image.
+
+ png_get_IHDR(png_ptr, info_ptr, &width, &height,
+ &bit_depth, &color_type, &interlace_type,
+ &compression_type, &filter_method);
+
+ width - holds the width of the image
+ in pixels (up to 2^31).
+
+ height - holds the height of the image
+ in pixels (up to 2^31).
+
+ bit_depth - holds the bit depth of one of the
+ image channels. (valid values are
+ 1, 2, 4, 8, 16 and depend also on
+ the color_type. See also
+ significant bits (sBIT) below).
+
+ color_type - describes which color/alpha channels
+ are present.
+ PNG_COLOR_TYPE_GRAY
+ (bit depths 1, 2, 4, 8, 16)
+ PNG_COLOR_TYPE_GRAY_ALPHA
+ (bit depths 8, 16)
+ PNG_COLOR_TYPE_PALETTE
+ (bit depths 1, 2, 4, 8)
+ PNG_COLOR_TYPE_RGB
+ (bit_depths 8, 16)
+ PNG_COLOR_TYPE_RGB_ALPHA
+ (bit_depths 8, 16)
+
+ PNG_COLOR_MASK_PALETTE
+ PNG_COLOR_MASK_COLOR
+ PNG_COLOR_MASK_ALPHA
+
+ interlace_type - (PNG_INTERLACE_NONE or
+ PNG_INTERLACE_ADAM7)
+
+ compression_type - (must be PNG_COMPRESSION_TYPE_BASE
+ for PNG 1.0)
+
+ filter_method - (must be PNG_FILTER_TYPE_BASE
+ for PNG 1.0, and can also be
+ PNG_INTRAPIXEL_DIFFERENCING if
+ the PNG datastream is embedded in
+ a MNG-1.0 datastream)
+
+ Any or all of interlace_type, compression_type, or
+ filter_method can be NULL if you are
+ not interested in their values.
+
+ Note that png_get_IHDR() returns 32-bit data into
+ the application's width and height variables.
+ This is an unsafe situation if these are 16-bit
+ variables. In such situations, the
+ png_get_image_width() and png_get_image_height()
+ functions described below are safer.
+
+ width = png_get_image_width(png_ptr,
+ info_ptr);
+
+ height = png_get_image_height(png_ptr,
+ info_ptr);
+
+ bit_depth = png_get_bit_depth(png_ptr,
+ info_ptr);
+
+ color_type = png_get_color_type(png_ptr,
+ info_ptr);
+
+ interlace_type = png_get_interlace_type(png_ptr,
+ info_ptr);
+
+ compression_type = png_get_compression_type(png_ptr,
+ info_ptr);
+
+ filter_method = png_get_filter_type(png_ptr,
+ info_ptr);
+
+ channels = png_get_channels(png_ptr, info_ptr);
+
+ channels - number of channels of info for the
+ color type (valid values are 1 (GRAY,
+ PALETTE), 2 (GRAY_ALPHA), 3 (RGB),
+ 4 (RGB_ALPHA or RGB + filler byte))
+
+ rowbytes = png_get_rowbytes(png_ptr, info_ptr);
+
+ rowbytes - number of bytes needed to hold a row
+
+ signature = png_get_signature(png_ptr, info_ptr);
+
+ signature - holds the signature read from the
+ file (if any). The data is kept in
+ the same offset it would be if the
+ whole signature were read (i.e. if an
+ application had already read in 4
+ bytes of signature before starting
+ libpng, the remaining 4 bytes would
+ be in signature[4] through signature[7]
+ (see png_set_sig_bytes())).
+
+These are also important, but their validity depends on whether the chunk
+has been read. The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
+png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
+data has been read, or zero if it is missing. The parameters to the
+png_get_<chunk> are set directly if they are simple data types, or a
+pointer into the info_ptr is returned for any complex types.
+
+ png_get_PLTE(png_ptr, info_ptr, &palette,
+ &num_palette);
+
+ palette - the palette for the file
+ (array of png_color)
+
+ num_palette - number of entries in the palette
+
+ png_get_gAMA(png_ptr, info_ptr, &file_gamma);
+ png_get_gAMA_fixed(png_ptr, info_ptr, &int_file_gamma);
+
+ file_gamma - the gamma at which the file is
+ written (PNG_INFO_gAMA)
+
+ int_file_gamma - 100,000 times the gamma at which the
+ file is written
+
+ png_get_cHRM(png_ptr, info_ptr, &white_x, &white_y, &red_x, &red_y,
+ &green_x, &green_y, &blue_x, &blue_y)
+ png_get_cHRM_XYZ(png_ptr, info_ptr, &red_X, &red_Y, &red_Z, &green_X,
+ &green_Y, &green_Z, &blue_X, &blue_Y, &blue_Z)
+ png_get_cHRM_fixed(png_ptr, info_ptr, &int_white_x, &int_white_y,
+ &int_red_x, &int_red_y, &int_green_x, &int_green_y,
+ &int_blue_x, &int_blue_y)
+ png_get_cHRM_XYZ_fixed(png_ptr, info_ptr, &int_red_X, &int_red_Y,
+ &int_red_Z, &int_green_X, &int_green_Y, &int_green_Z,
+ &int_blue_X, &int_blue_Y, &int_blue_Z)
+
+ {white,red,green,blue}_{x,y}
+ A color space encoding specified using the chromaticities
+ of the end points and the white point. (PNG_INFO_cHRM)
+
+ {red,green,blue}_{X,Y,Z}
+ A color space encoding specified using the encoding end
+ points - the CIE tristimulus specification of the intended
+ color of the red, green and blue channels in the PNG RGB
+ data. The white point is simply the sum of the three end
+ points. (PNG_INFO_cHRM)
+
+ png_get_sRGB(png_ptr, info_ptr, &srgb_intent);
+
+ file_srgb_intent - the rendering intent (PNG_INFO_sRGB)
+ The presence of the sRGB chunk
+ means that the pixel data is in the
+ sRGB color space. This chunk also
+ implies specific values of gAMA and
+ cHRM.
+
+ png_get_iCCP(png_ptr, info_ptr, &name,
+ &compression_type, &profile, &proflen);
+
+ name - The profile name.
+
+ compression_type - The compression type; always
+ PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
+ You may give NULL to this argument to
+ ignore it.
+
+ profile - International Color Consortium color
+ profile data. May contain NULs.
+
+ proflen - length of profile data in bytes.
+
+ png_get_sBIT(png_ptr, info_ptr, &sig_bit);
+
+ sig_bit - the number of significant bits for
+ (PNG_INFO_sBIT) each of the gray,
+ red, green, and blue channels,
+ whichever are appropriate for the
+ given color type (png_color_16)
+
+ png_get_tRNS(png_ptr, info_ptr, &trans_alpha,
+ &num_trans, &trans_color);
+
+ trans_alpha - array of alpha (transparency)
+ entries for palette (PNG_INFO_tRNS)
+
+ num_trans - number of transparent entries
+ (PNG_INFO_tRNS)
+
+ trans_color - graylevel or color sample values of
+ the single transparent color for
+ non-paletted images (PNG_INFO_tRNS)
+
+ png_get_hIST(png_ptr, info_ptr, &hist);
+ (PNG_INFO_hIST)
+
+ hist - histogram of palette (array of
+ png_uint_16)
+
+ png_get_tIME(png_ptr, info_ptr, &mod_time);
+
+ mod_time - time image was last modified
+ (PNG_VALID_tIME)
+
+ png_get_bKGD(png_ptr, info_ptr, &background);
+
+ background - background color (of type
+ png_color_16p) (PNG_VALID_bKGD)
+ valid 16-bit red, green and blue
+ values, regardless of color_type
+
+ num_comments = png_get_text(png_ptr, info_ptr,
+ &text_ptr, &num_text);
+
+ num_comments - number of comments
+
+ text_ptr - array of png_text holding image
+ comments
+
+ text_ptr[i].compression - type of compression used
+ on "text" PNG_TEXT_COMPRESSION_NONE
+ PNG_TEXT_COMPRESSION_zTXt
+ PNG_ITXT_COMPRESSION_NONE
+ PNG_ITXT_COMPRESSION_zTXt
+
+ text_ptr[i].key - keyword for comment. Must contain
+ 1-79 characters.
+
+ text_ptr[i].text - text comments for current
+ keyword. Can be empty.
+
+ text_ptr[i].text_length - length of text string,
+ after decompression, 0 for iTXt
+
+ text_ptr[i].itxt_length - length of itxt string,
+ after decompression, 0 for tEXt/zTXt
+
+ text_ptr[i].lang - language of comment (empty
+ string for unknown).
+
+ text_ptr[i].lang_key - keyword in UTF-8
+ (empty string for unknown).
+
+ Note that the itxt_length, lang, and lang_key
+ members of the text_ptr structure only exist when the
+ library is built with iTXt chunk support. Prior to
+ libpng-1.4.0 the library was built by default without
+ iTXt support. Also note that when iTXt is supported,
+ they contain NULL pointers when the "compression"
+ field contains PNG_TEXT_COMPRESSION_NONE or
+ PNG_TEXT_COMPRESSION_zTXt.
+
+ num_text - number of comments (same as
+ num_comments; you can put NULL here
+ to avoid the duplication)
+
+ Note while png_set_text() will accept text, language,
+ and translated keywords that can be NULL pointers, the
+ structure returned by png_get_text will always contain
+ regular zero-terminated C strings. They might be
+ empty strings but they will never be NULL pointers.
+
+ num_spalettes = png_get_sPLT(png_ptr, info_ptr,
+ &palette_ptr);
+
+ num_spalettes - number of sPLT chunks read.
+
+ palette_ptr - array of palette structures holding
+ contents of one or more sPLT chunks
+ read.
+
+ png_get_oFFs(png_ptr, info_ptr, &offset_x, &offset_y,
+ &unit_type);
+
+ offset_x - positive offset from the left edge
+ of the screen (can be negative)
+
+ offset_y - positive offset from the top edge
+ of the screen (can be negative)
+
+ unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
+
+ png_get_pHYs(png_ptr, info_ptr, &res_x, &res_y,
+ &unit_type);
+
+ res_x - pixels/unit physical resolution in
+ x direction
+
+ res_y - pixels/unit physical resolution in
+ x direction
+
+ unit_type - PNG_RESOLUTION_UNKNOWN,
+ PNG_RESOLUTION_METER
+
+ png_get_sCAL(png_ptr, info_ptr, &unit, &width,
+ &height)
+
+ unit - physical scale units (an integer)
+
+ width - width of a pixel in physical scale units
+
+ height - height of a pixel in physical scale units
+ (width and height are doubles)
+
+ png_get_sCAL_s(png_ptr, info_ptr, &unit, &width,
+ &height)
+
+ unit - physical scale units (an integer)
+
+ width - width of a pixel in physical scale units
+ (expressed as a string)
+
+ height - height of a pixel in physical scale units
+ (width and height are strings like "2.54")
+
+ num_unknown_chunks = png_get_unknown_chunks(png_ptr,
+ info_ptr, &unknowns)
+
+ unknowns - array of png_unknown_chunk
+ structures holding unknown chunks
+
+ unknowns[i].name - name of unknown chunk
+
+ unknowns[i].data - data of unknown chunk
+
+ unknowns[i].size - size of unknown chunk's data
+
+ unknowns[i].location - position of chunk in file
+
+ The value of "i" corresponds to the order in which the
+ chunks were read from the PNG file or inserted with the
+ png_set_unknown_chunks() function.
+
+ The value of "location" is a bitwise "or" of
+
+ PNG_HAVE_IHDR (0x01)
+ PNG_HAVE_PLTE (0x02)
+ PNG_AFTER_IDAT (0x08)
+
+The data from the pHYs chunk can be retrieved in several convenient
+forms:
+
+ res_x = png_get_x_pixels_per_meter(png_ptr,
+ info_ptr)
+
+ res_y = png_get_y_pixels_per_meter(png_ptr,
+ info_ptr)
+
+ res_x_and_y = png_get_pixels_per_meter(png_ptr,
+ info_ptr)
+
+ res_x = png_get_x_pixels_per_inch(png_ptr,
+ info_ptr)
+
+ res_y = png_get_y_pixels_per_inch(png_ptr,
+ info_ptr)
+
+ res_x_and_y = png_get_pixels_per_inch(png_ptr,
+ info_ptr)
+
+ aspect_ratio = png_get_pixel_aspect_ratio(png_ptr,
+ info_ptr)
+
+ Each of these returns 0 [signifying "unknown"] if
+ the data is not present or if res_x is 0;
+ res_x_and_y is 0 if res_x != res_y
+
+ Note that because of the way the resolutions are
+ stored internally, the inch conversions won't
+ come out to exactly even number. For example,
+ 72 dpi is stored as 0.28346 pixels/meter, and
+ when this is retrieved it is 71.9988 dpi, so
+ be sure to round the returned value appropriately
+ if you want to display a reasonable-looking result.
+
+The data from the oFFs chunk can be retrieved in several convenient
+forms:
+
+ x_offset = png_get_x_offset_microns(png_ptr, info_ptr);
+
+ y_offset = png_get_y_offset_microns(png_ptr, info_ptr);
+
+ x_offset = png_get_x_offset_inches(png_ptr, info_ptr);
+
+ y_offset = png_get_y_offset_inches(png_ptr, info_ptr);
+
+ Each of these returns 0 [signifying "unknown" if both
+ x and y are 0] if the data is not present or if the
+ chunk is present but the unit is the pixel. The
+ remark about inexact inch conversions applies here
+ as well, because a value in inches can't always be
+ converted to microns and back without some loss
+ of precision.
+
+For more information, see the
+PNG specification for chunk contents. Be careful with trusting
+rowbytes, as some of the transformations could increase the space
+needed to hold a row (expand, filler, gray_to_rgb, etc.).
+See png_read_update_info(), below.
+
+A quick word about text_ptr and num_text. PNG stores comments in
+keyword/text pairs, one pair per chunk, with no limit on the number
+of text chunks, and a 2^31 byte limit on their size. While there are
+suggested keywords, there is no requirement to restrict the use to these
+strings. It is strongly suggested that keywords and text be sensible
+to humans (that's the point), so don't use abbreviations. Non-printing
+symbols are not allowed. See the PNG specification for more details.
+There is also no requirement to have text after the keyword.
+
+Keywords should be limited to 79 Latin-1 characters without leading or
+trailing spaces, but non-consecutive spaces are allowed within the
+keyword. It is possible to have the same keyword any number of times.
+The text_ptr is an array of png_text structures, each holding a
+pointer to a language string, a pointer to a keyword and a pointer to
+a text string. The text string, language code, and translated
+keyword may be empty or NULL pointers. The keyword/text
+pairs are put into the array in the order that they are received.
+However, some or all of the text chunks may be after the image, so, to
+make sure you have read all the text chunks, don't mess with these
+until after you read the stuff after the image. This will be
+mentioned again below in the discussion that goes with png_read_end().
+
+Input transformations
+
+After you've read the header information, you can set up the library
+to handle any special transformations of the image data. The various
+ways to transform the data will be described in the order that they
+should occur. This is important, as some of these change the color
+type and/or bit depth of the data, and some others only work on
+certain color types and bit depths.
+
+Transformations you request are ignored if they don't have any meaning for a
+particular input data format. However some transformations can have an effect
+as a result of a previous transformation. If you specify a contradictory set of
+transformations, for example both adding and removing the alpha channel, you
+cannot predict the final result.
+
+The color used for the transparency values should be supplied in the same
+format/depth as the current image data. It is stored in the same format/depth
+as the image data in a tRNS chunk, so this is what libpng expects for this data.
+
+The color used for the background value depends on the need_expand argument as
+described below.
+
+Data will be decoded into the supplied row buffers packed into bytes
+unless the library has been told to transform it into another format.
+For example, 4 bit/pixel paletted or grayscale data will be returned
+2 pixels/byte with the leftmost pixel in the high-order bits of the
+byte, unless png_set_packing() is called. 8-bit RGB data will be stored
+in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha()
+is called to insert filler bytes, either before or after each RGB triplet.
+16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant
+byte of the color value first, unless png_set_scale_16() is called to
+transform it to regular RGB RGB triplets, or png_set_filler() or
+png_set_add alpha() is called to insert filler bytes, either before or
+after each RRGGBB triplet. Similarly, 8-bit or 16-bit grayscale data can
+be modified with png_set_filler(), png_set_add_alpha(), png_set_strip_16(),
+or png_set_scale_16().
+
+The following code transforms grayscale images of less than 8 to 8 bits,
+changes paletted images to RGB, and adds a full alpha channel if there is
+transparency information in a tRNS chunk. This is most useful on
+grayscale images with bit depths of 2 or 4 or if there is a multiple-image
+viewing application that wishes to treat all images in the same way.
+
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ png_set_palette_to_rgb(png_ptr);
+
+ if (png_get_valid(png_ptr, info_ptr,
+ PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr);
+
+ if (color_type == PNG_COLOR_TYPE_GRAY &&
+ bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr);
+
+The first two functions are actually aliases for png_set_expand(), added
+in libpng version 1.0.4, with the function names expanded to improve code
+readability. In some future version they may actually do different
+things.
+
+As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
+added. It expands the sample depth without changing tRNS to alpha.
+
+As of libpng version 1.5.2, png_set_expand_16() was added. It behaves as
+png_set_expand(); however, the resultant channels have 16 bits rather than 8.
+Use this when the output color or gray channels are made linear to avoid fairly
+severe accuracy loss.
+
+ if (bit_depth < 16)
+ png_set_expand_16(png_ptr);
+
+PNG can have files with 16 bits per channel. If you only can handle
+8 bits per channel, this will strip the pixels down to 8-bit.
+
+ if (bit_depth == 16)
+#if PNG_LIBPNG_VER >= 10504
+ png_set_scale_16(png_ptr);
+#else
+ png_set_strip_16(png_ptr);
+#endif
+
+(The more accurate "png_set_scale_16()" API became available in libpng version
+1.5.4).
+
+If you need to process the alpha channel on the image separately from the image
+data (for example if you convert it to a bitmap mask) it is possible to have
+libpng strip the channel leaving just RGB or gray data:
+
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ png_set_strip_alpha(png_ptr);
+
+If you strip the alpha channel you need to find some other way of dealing with
+the information. If, instead, you want to convert the image to an opaque
+version with no alpha channel use png_set_background; see below.
+
+As of libpng version 1.5.2, almost all useful expansions are supported, the
+major ommissions are conversion of grayscale to indexed images (which can be
+done trivially in the application) and conversion of indexed to grayscale (which
+can be done by a trivial manipulation of the palette.)
+
+In the following table, the 01 means grayscale with depth<8, 31 means
+indexed with depth<8, other numerals represent the color type, "T" means
+the tRNS chunk is present, A means an alpha channel is present, and O
+means tRNS or alpha is present but all pixels in the image are opaque.
+
+ FROM 01 31 0 0T 0O 2 2T 2O 3 3T 3O 4A 4O 6A 6O
+ TO
+ 01 - [G] - - - - - - - - - - - - -
+ 31 [Q] Q [Q] [Q] [Q] Q Q Q Q Q Q [Q] [Q] Q Q
+ 0 1 G + . . G G G G G G B B GB GB
+ 0T lt Gt t + . Gt G G Gt G G Bt Bt GBt GBt
+ 0O lt Gt t . + Gt Gt G Gt Gt G Bt Bt GBt GBt
+ 2 C P C C C + . . C - - CB CB B B
+ 2T Ct - Ct C C t + t - - - CBt CBt Bt Bt
+ 2O Ct - Ct C C t t + - - - CBt CBt Bt Bt
+ 3 [Q] p [Q] [Q] [Q] Q Q Q + . . [Q] [Q] Q Q
+ 3T [Qt] p [Qt][Q] [Q] Qt Qt Qt t + t [Qt][Qt] Qt Qt
+ 3O [Qt] p [Qt][Q] [Q] Qt Qt Qt t t + [Qt][Qt] Qt Qt
+ 4A lA G A T T GA GT GT GA GT GT + BA G GBA
+ 4O lA GBA A T T GA GT GT GA GT GT BA + GBA G
+ 6A CA PA CA C C A T tT PA P P C CBA + BA
+ 6O CA PBA CA C C A tT T PA P P CBA C BA +
+
+Within the matrix,
+ "+" identifies entries where 'from' and 'to' are the same.
+ "-" means the transformation is not supported.
+ "." means nothing is necessary (a tRNS chunk can just be ignored).
+ "t" means the transformation is obtained by png_set_tRNS.
+ "A" means the transformation is obtained by png_set_add_alpha().
+ "X" means the transformation is obtained by png_set_expand().
+ "1" means the transformation is obtained by
+ png_set_expand_gray_1_2_4_to_8() (and by png_set_expand() if there
+ is no transparency in the original or the final format).
+ "C" means the transformation is obtained by png_set_gray_to_rgb().
+ "G" means the transformation is obtained by png_set_rgb_to_gray().
+ "P" means the transformation is obtained by
+ png_set_expand_palette_to_rgb().
+ "p" means the transformation is obtained by png_set_packing().
+ "Q" means the transformation is obtained by png_set_quantize().
+ "T" means the transformation is obtained by png_set_tRNS_to_alpha().
+ "B" means the transformation is obtained by png_set_background(), or
+ png_strip_alpha().
+
+When an entry has multiple transforms listed all are required to cause the
+right overall transformation. When two transforms are separated by a comma
+either will do the job. When transforms are enclosed in [] the transform should
+do the job but this is currently unimplemented - a different format will result
+if the suggested transformations are used.
+
+In PNG files, the alpha channel in an image
+is the level of opacity. If you need the alpha channel in an image to
+be the level of transparency instead of opacity, you can invert the
+alpha channel (or the tRNS chunk data) after it's read, so that 0 is
+fully opaque and 255 (in 8-bit or paletted images) or 65535 (in 16-bit
+images) is fully transparent, with
+
+ png_set_invert_alpha(png_ptr);
+
+PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
+they can, resulting in, for example, 8 pixels per byte for 1 bit
+files. This code expands to 1 pixel per byte without changing the
+values of the pixels:
+
+ if (bit_depth < 8)
+ png_set_packing(png_ptr);
+
+PNG files have possible bit depths of 1, 2, 4, 8, and 16. All pixels
+stored in a PNG image have been "scaled" or "shifted" up to the next
+higher possible bit depth (e.g. from 5 bits/sample in the range [0,31]
+to 8 bits/sample in the range [0, 255]). However, it is also possible
+to convert the PNG pixel data back to the original bit depth of the
+image. This call reduces the pixels back down to the original bit depth:
+
+ png_color_8p sig_bit;
+
+ if (png_get_sBIT(png_ptr, info_ptr, &sig_bit))
+ png_set_shift(png_ptr, sig_bit);
+
+PNG files store 3-color pixels in red, green, blue order. This code
+changes the storage of the pixels to blue, green, red:
+
+ if (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ png_set_bgr(png_ptr);
+
+PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them
+into 4 or 8 bytes for windowing systems that need them in this format:
+
+ if (color_type == PNG_COLOR_TYPE_RGB)
+ png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
+
+where "filler" is the 8 or 16-bit number to fill with, and the location is
+either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether
+you want the filler before the RGB or after. This transformation
+does not affect images that already have full alpha channels. To add an
+opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
+will generate RGBA pixels.
+
+Note that png_set_filler() does not change the color type. If you want
+to do that, you can add a true alpha channel with
+
+ if (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_GRAY)
+ png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER);
+
+where "filler" contains the alpha value to assign to each pixel.
+This function was added in libpng-1.2.7.
+
+If you are reading an image with an alpha channel, and you need the
+data as ARGB instead of the normal PNG format RGBA:
+
+ if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ png_set_swap_alpha(png_ptr);
+
+For some uses, you may want a grayscale image to be represented as
+RGB. This code will do that conversion:
+
+ if (color_type == PNG_COLOR_TYPE_GRAY ||
+ color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ png_set_gray_to_rgb(png_ptr);
+
+Conversely, you can convert an RGB or RGBA image to grayscale or grayscale
+with alpha.
+
+ if (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ png_set_rgb_to_gray(png_ptr, error_action, double red_weight,
+ double green_weight);
+
+ error_action = 1: silently do the conversion
+
+ error_action = 2: issue a warning if the original
+ image has any pixel where
+ red != green or red != blue
+
+ error_action = 3: issue an error and abort the
+ conversion if the original
+ image has any pixel where
+ red != green or red != blue
+
+ red_weight: weight of red component
+
+ green_weight: weight of green component
+ If either weight is negative, default
+ weights are used.
+
+In the corresponding fixed point API the red_weight and green_weight values are
+simply scaled by 100,000:
+
+ png_set_rgb_to_gray(png_ptr, error_action, png_fixed_point red_weight,
+ png_fixed_point green_weight);
+
+If you have set error_action = 1 or 2, you can
+later check whether the image really was gray, after processing
+the image rows, with the png_get_rgb_to_gray_status(png_ptr) function.
+It will return a png_byte that is zero if the image was gray or
+1 if there were any non-gray pixels. Background and sBIT data
+will be silently converted to grayscale, using the green channel
+data for sBIT, regardless of the error_action setting.
+
+The default values come from the PNG file cHRM chunk if present; otherwise, the
+defaults correspond to the ITU-R recommendation 709, and also the sRGB color
+space, as recommended in the Charles Poynton's Colour FAQ,
+<http://www.poynton.com/>, in section 9:
+
+ <http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html#RTFToC9>
+
+ Y = 0.2126 * R + 0.7152 * G + 0.0722 * B
+
+Previous versions of this document, 1998 through 2002, recommended a slightly
+different formula:
+
+ Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
+
+Libpng uses an integer approximation:
+
+ Y = (6968 * R + 23434 * G + 2366 * B)/32768
+
+The calculation is done in a linear colorspace, if the image gamma
+can be determined.
+
+The png_set_background() function has been described already; it tells libpng to
+composite images with alpha or simple transparency against the supplied
+background color. For compatibility with versions of libpng earlier than
+libpng-1.5.4 it is recommended that you call the function after reading the file
+header, even if you don't want to use the color in a bKGD chunk, if one exists.
+
+If the PNG file contains a bKGD chunk (PNG_INFO_bKGD valid),
+you may use this color, or supply another color more suitable for
+the current display (e.g., the background color from a web page). You
+need to tell libpng how the color is represented, both the format of the
+component values in the color (the number of bits) and the gamma encoding of the
+color. The function takes two arguments, background_gamma_mode and need_expand
+to convey this information, however only two combinations are likely to be
+useful:
+
+ png_color_16 my_background;
+ png_color_16p image_background;
+
+ if (png_get_bKGD(png_ptr, info_ptr, &image_background))
+ png_set_background(png_ptr, image_background,
+ PNG_BACKGROUND_GAMMA_FILE, 1/*needs to be expanded*/, 1);
+ else
+ png_set_background(png_ptr, &my_background,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0/*do not expand*/, 1);
+
+The second call was described above - my_background is in the format of the
+final, display, output produced by libpng. Because you now know the format of
+the PNG it is possible to avoid the need to choose either 8-bit or 16-bit
+output and to retain palette images (the palette colors will be modified
+appropriately and the tRNS chunk removed.) However, if you are doing this,
+take great care not to ask for transformations without checking first that
+they apply!
+
+In the first call the background color has the original bit depth and color type
+of the PNG file. So, for palette images the color is supplied as a palette
+index and for low bit greyscale images the color is a reduced bit value in
+image_background->gray.
+
+If you didn't call png_set_gamma() before reading the file header, for example
+if you need your code to remain compatible with older versions of libpng prior
+to libpng-1.5.4, this is the place to call it.
+
+Do not call it if you called png_set_alpha_mode(); doing so will damage the
+settings put in place by png_set_alpha_mode(). (If png_set_alpha_mode() is
+supported then you can certainly do png_set_gamma() before reading the PNG
+header.)
+
+This API unconditionally sets the screen and file gamma values, so it will
+override the value in the PNG file unless it is called before the PNG file
+reading starts. For this reason you must always call it with the PNG file
+value when you call it in this position:
+
+ if (png_get_gAMA(png_ptr, info_ptr, &file_gamma))
+ png_set_gamma(png_ptr, screen_gamma, file_gamma);
+
+ else
+ png_set_gamma(png_ptr, screen_gamma, 0.45455);
+
+If you need to reduce an RGB file to a paletted file, or if a paletted
+file has more entries then will fit on your screen, png_set_quantize()
+will do that. Note that this is a simple match quantization that merely
+finds the closest color available. This should work fairly well with
+optimized palettes, but fairly badly with linear color cubes. If you
+pass a palette that is larger than maximum_colors, the file will
+reduce the number of colors in the palette so it will fit into
+maximum_colors. If there is a histogram, libpng will use it to make
+more intelligent choices when reducing the palette. If there is no
+histogram, it may not do as good a job.
+
+ if (color_type & PNG_COLOR_MASK_COLOR)
+ {
+ if (png_get_valid(png_ptr, info_ptr,
+ PNG_INFO_PLTE))
+ {
+ png_uint_16p histogram = NULL;
+
+ png_get_hIST(png_ptr, info_ptr,
+ &histogram);
+ png_set_quantize(png_ptr, palette, num_palette,
+ max_screen_colors, histogram, 1);
+ }
+
+ else
+ {
+ png_color std_color_cube[MAX_SCREEN_COLORS] =
+ { ... colors ... };
+
+ png_set_quantize(png_ptr, std_color_cube,
+ MAX_SCREEN_COLORS, MAX_SCREEN_COLORS,
+ NULL,0);
+ }
+ }
+
+PNG files describe monochrome as black being zero and white being one.
+The following code will reverse this (make black be one and white be
+zero):
+
+ if (bit_depth == 1 && color_type == PNG_COLOR_TYPE_GRAY)
+ png_set_invert_mono(png_ptr);
+
+This function can also be used to invert grayscale and gray-alpha images:
+
+ if (color_type == PNG_COLOR_TYPE_GRAY ||
+ color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ png_set_invert_mono(png_ptr);
+
+PNG files store 16-bit pixels in network byte order (big-endian,
+ie. most significant bits first). This code changes the storage to the
+other way (little-endian, i.e. least significant bits first, the
+way PCs store them):
+
+ if (bit_depth == 16)
+ png_set_swap(png_ptr);
+
+If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
+need to change the order the pixels are packed into bytes, you can use:
+
+ if (bit_depth < 8)
+ png_set_packswap(png_ptr);
+
+Finally, you can write your own transformation function if none of
+the existing ones meets your needs. This is done by setting a callback
+with
+
+ png_set_read_user_transform_fn(png_ptr,
+ read_transform_fn);
+
+You must supply the function
+
+ void read_transform_fn(png_structp png_ptr, png_row_infop
+ row_info, png_bytep data)
+
+See pngtest.c for a working example. Your function will be called
+after all of the other transformations have been processed. Take care with
+interlaced images if you do the interlace yourself - the width of the row is the
+width in 'row_info', not the overall image width.
+
+If supported, libpng provides two information routines that you can use to find
+where you are in processing the image:
+
+ png_get_current_pass_number(png_structp png_ptr);
+ png_get_current_row_number(png_structp png_ptr);
+
+Don't try using these outside a transform callback - firstly they are only
+supported if user transforms are supported, secondly they may well return
+unexpected results unless the row is actually being processed at the moment they
+are called.
+
+With interlaced
+images the value returned is the row in the input sub-image image. Use
+PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
+find the output pixel (x,y) given an interlaced sub-image pixel (row,col,pass).
+
+The discussion of interlace handling above contains more information on how to
+use these values.
+
+You can also set up a pointer to a user structure for use by your
+callback function, and you can inform libpng that your transform
+function will change the number of channels or bit depth with the
+function
+
+ png_set_user_transform_info(png_ptr, user_ptr,
+ user_depth, user_channels);
+
+The user's application, not libpng, is responsible for allocating and
+freeing any memory required for the user structure.
+
+You can retrieve the pointer via the function
+png_get_user_transform_ptr(). For example:
+
+ voidp read_user_transform_ptr =
+ png_get_user_transform_ptr(png_ptr);
+
+The last thing to handle is interlacing; this is covered in detail below,
+but you must call the function here if you want libpng to handle expansion
+of the interlaced image.
+
+ number_of_passes = png_set_interlace_handling(png_ptr);
+
+After setting the transformations, libpng can update your png_info
+structure to reflect any transformations you've requested with this
+call.
+
+ png_read_update_info(png_ptr, info_ptr);
+
+This is most useful to update the info structure's rowbytes
+field so you can use it to allocate your image memory. This function
+will also update your palette with the correct screen_gamma and
+background if these have been given with the calls above. You may
+only call png_read_update_info() once with a particular info_ptr.
+
+After you call png_read_update_info(), you can allocate any
+memory you need to hold the image. The row data is simply
+raw byte data for all forms of images. As the actual allocation
+varies among applications, no example will be given. If you
+are allocating one large chunk, you will need to build an
+array of pointers to each row, as it will be needed for some
+of the functions below.
+
+Remember: Before you call png_read_update_info(), the png_get_*()
+functions return the values corresponding to the original PNG image.
+After you call png_read_update_info the values refer to the image
+that libpng will output. Consequently you must call all the png_set_
+functions before you call png_read_update_info(). This is particularly
+important for png_set_interlace_handling() - if you are going to call
+png_read_update_info() you must call png_set_interlace_handling() before
+it unless you want to receive interlaced output.
+
+Reading image data
+
+After you've allocated memory, you can read the image data.
+The simplest way to do this is in one function call. If you are
+allocating enough memory to hold the whole image, you can just
+call png_read_image() and libpng will read in all the image data
+and put it in the memory area supplied. You will need to pass in
+an array of pointers to each row.
+
+This function automatically handles interlacing, so you don't
+need to call png_set_interlace_handling() (unless you call
+png_read_update_info()) or call this function multiple times, or any
+of that other stuff necessary with png_read_rows().
+
+ png_read_image(png_ptr, row_pointers);
+
+where row_pointers is:
+
+ png_bytep row_pointers[height];
+
+You can point to void or char or whatever you use for pixels.
+
+If you don't want to read in the whole image at once, you can
+use png_read_rows() instead. If there is no interlacing (check
+interlace_type == PNG_INTERLACE_NONE), this is simple:
+
+ png_read_rows(png_ptr, row_pointers, NULL,
+ number_of_rows);
+
+where row_pointers is the same as in the png_read_image() call.
+
+If you are doing this just one row at a time, you can do this with
+a single row_pointer instead of an array of row_pointers:
+
+ png_bytep row_pointer = row;
+ png_read_row(png_ptr, row_pointer, NULL);
+
+If the file is interlaced (interlace_type != 0 in the IHDR chunk), things
+get somewhat harder. The only current (PNG Specification version 1.2)
+interlacing type for PNG is (interlace_type == PNG_INTERLACE_ADAM7);
+a somewhat complicated 2D interlace scheme, known as Adam7, that
+breaks down an image into seven smaller images of varying size, based
+on an 8x8 grid. This number is defined (from libpng 1.5) as
+PNG_INTERLACE_ADAM7_PASSES in png.h
+
+libpng can fill out those images or it can give them to you "as is".
+It is almost always better to have libpng handle the interlacing for you.
+If you want the images filled out, there are two ways to do that. The one
+mentioned in the PNG specification is to expand each pixel to cover
+those pixels that have not been read yet (the "rectangle" method).
+This results in a blocky image for the first pass, which gradually
+smooths out as more pixels are read. The other method is the "sparkle"
+method, where pixels are drawn only in their final locations, with the
+rest of the image remaining whatever colors they were initialized to
+before the start of the read. The first method usually looks better,
+but tends to be slower, as there are more pixels to put in the rows.
+
+If, as is likely, you want libpng to expand the images, call this before
+calling png_start_read_image() or png_read_update_info():
+
+ if (interlace_type == PNG_INTERLACE_ADAM7)
+ number_of_passes
+ = png_set_interlace_handling(png_ptr);
+
+This will return the number of passes needed. Currently, this is seven,
+but may change if another interlace type is added. This function can be
+called even if the file is not interlaced, where it will return one pass.
+You then need to read the whole image 'number_of_passes' times. Each time
+will distribute the pixels from the current pass to the correct place in
+the output image, so you need to supply the same rows to png_read_rows in
+each pass.
+
+If you are not going to display the image after each pass, but are
+going to wait until the entire image is read in, use the sparkle
+effect. This effect is faster and the end result of either method
+is exactly the same. If you are planning on displaying the image
+after each pass, the "rectangle" effect is generally considered the
+better looking one.
+
+If you only want the "sparkle" effect, just call png_read_rows() as
+normal, with the third parameter NULL. Make sure you make pass over
+the image number_of_passes times, and you don't change the data in the
+rows between calls. You can change the locations of the data, just
+not the data. Each pass only writes the pixels appropriate for that
+pass, and assumes the data from previous passes is still valid.
+
+ png_read_rows(png_ptr, row_pointers, NULL,
+ number_of_rows);
+
+If you only want the first effect (the rectangles), do the same as
+before except pass the row buffer in the third parameter, and leave
+the second parameter NULL.
+
+ png_read_rows(png_ptr, NULL, row_pointers,
+ number_of_rows);
+
+If you don't want libpng to handle the interlacing details, just call
+png_read_rows() PNG_INTERLACE_ADAM7_PASSES times to read in all the images.
+Each of the images is a valid image by itself, however you will almost
+certainly need to distribute the pixels from each sub-image to the
+correct place. This is where everything gets very tricky.
+
+If you want to retrieve the separate images you must pass the correct
+number of rows to each successive call of png_read_rows(). The calculation
+gets pretty complicated for small images, where some sub-images may
+not even exist because either their width or height ends up zero.
+libpng provides two macros to help you in 1.5 and later versions:
+
+ png_uint_32 width = PNG_PASS_COLS(image_width, pass_number);
+ png_uint_32 height = PNG_PASS_ROWS(image_height, pass_number);
+
+Respectively these tell you the width and height of the sub-image
+corresponding to the numbered pass. 'pass' is in in the range 0 to 6 -
+this can be confusing because the specification refers to the same passes
+as 1 to 7! Be careful, you must check both the width and height before
+calling png_read_rows() and not call it for that pass if either is zero.
+
+You can, of course, read each sub-image row by row. If you want to
+produce optimal code to make a pixel-by-pixel transformation of an
+interlaced image this is the best approach; read each row of each pass,
+transform it, and write it out to a new interlaced image.
+
+If you want to de-interlace the image yourself libpng provides further
+macros to help that tell you where to place the pixels in the output image.
+Because the interlacing scheme is rectangular - sub-image pixels are always
+arranged on a rectangular grid - all you need to know for each pass is the
+starting column and row in the output image of the first pixel plus the
+spacing between each pixel. As of libpng 1.5 there are four macros to
+retrieve this information:
+
+ png_uint_32 x = PNG_PASS_START_COL(pass);
+ png_uint_32 y = PNG_PASS_START_ROW(pass);
+ png_uint_32 xStep = 1U << PNG_PASS_COL_SHIFT(pass);
+ png_uint_32 yStep = 1U << PNG_PASS_ROW_SHIFT(pass);
+
+These allow you to write the obvious loop:
+
+ png_uint_32 input_y = 0;
+ png_uint_32 output_y = PNG_PASS_START_ROW(pass);
+
+ while (output_y < output_image_height)
+ {
+ png_uint_32 input_x = 0;
+ png_uint_32 output_x = PNG_PASS_START_COL(pass);
+
+ while (output_x < output_image_width)
+ {
+ image[output_y][output_x] =
+ subimage[pass][input_y][input_x++];
+
+ output_x += xStep;
+ }
+
+ ++input_y;
+ output_y += yStep;
+ }
+
+Notice that the steps between successive output rows and columns are
+returned as shifts. This is possible because the pixels in the subimages
+are always a power of 2 apart - 1, 2, 4 or 8 pixels - in the original
+image. In practice you may need to directly calculate the output coordinate
+given an input coordinate. libpng provides two further macros for this
+purpose:
+
+ png_uint_32 output_x = PNG_COL_FROM_PASS_COL(input_x, pass);
+ png_uint_32 output_y = PNG_ROW_FROM_PASS_ROW(input_y, pass);
+
+Finally a pair of macros are provided to tell you if a particular image
+row or column appears in a given pass:
+
+ int col_in_pass = PNG_COL_IN_INTERLACE_PASS(output_x, pass);
+ int row_in_pass = PNG_ROW_IN_INTERLACE_PASS(output_y, pass);
+
+Bear in mind that you will probably also need to check the width and height
+of the pass in addition to the above to be sure the pass even exists!
+
+With any luck you are convinced by now that you don't want to do your own
+interlace handling. In reality normally the only good reason for doing this
+is if you are processing PNG files on a pixel-by-pixel basis and don't want
+to load the whole file into memory when it is interlaced.
+
+libpng includes a test program, pngvalid, that illustrates reading and
+writing of interlaced images. If you can't get interlacing to work in your
+code and don't want to leave it to libpng (the recommended approach), see
+how pngvalid.c does it.
+
+Finishing a sequential read
+
+After you are finished reading the image through the
+low-level interface, you can finish reading the file. If you are
+interested in comments or time, which may be stored either before or
+after the image data, you should pass the separate png_info struct if
+you want to keep the comments from before and after the image
+separate.
+
+ png_infop end_info = png_create_info_struct(png_ptr);
+
+ if (!end_info)
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ png_read_end(png_ptr, end_info);
+
+If you are not interested, you should still call png_read_end()
+but you can pass NULL, avoiding the need to create an end_info structure.
+
+ png_read_end(png_ptr, (png_infop)NULL);
+
+If you don't call png_read_end(), then your file pointer will be
+left pointing to the first chunk after the last IDAT, which is probably
+not what you want if you expect to read something beyond the end of
+the PNG datastream.
+
+When you are done, you can free all memory allocated by libpng like this:
+
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ &end_info);
+
+or, if you didn't create an end_info structure,
+
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+
+It is also possible to individually free the info_ptr members that
+point to libpng-allocated storage with the following function:
+
+ png_free_data(png_ptr, info_ptr, mask, seq)
+
+ mask - identifies data to be freed, a mask
+ containing the bitwise OR of one or
+ more of
+ PNG_FREE_PLTE, PNG_FREE_TRNS,
+ PNG_FREE_HIST, PNG_FREE_ICCP,
+ PNG_FREE_PCAL, PNG_FREE_ROWS,
+ PNG_FREE_SCAL, PNG_FREE_SPLT,
+ PNG_FREE_TEXT, PNG_FREE_UNKN,
+ or simply PNG_FREE_ALL
+
+ seq - sequence number of item to be freed
+ (-1 for all items)
+
+This function may be safely called when the relevant storage has
+already been freed, or has not yet been allocated, or was allocated
+by the user and not by libpng, and will in those cases do nothing.
+The "seq" parameter is ignored if only one item of the selected data
+type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
+are allowed for the data type identified in the mask, such as text or
+sPLT, only the n'th item in the structure is freed, where n is "seq".
+
+The default behavior is only to free data that was allocated internally
+by libpng. This can be changed, so that libpng will not free the data,
+or so that it will free data that was allocated by the user with png_malloc()
+or png_zalloc() and passed in via a png_set_*() function, with
+
+ png_data_freer(png_ptr, info_ptr, freer, mask)
+
+ freer - one of
+ PNG_DESTROY_WILL_FREE_DATA
+ PNG_SET_WILL_FREE_DATA
+ PNG_USER_WILL_FREE_DATA
+
+ mask - which data elements are affected
+ same choices as in png_free_data()
+
+This function only affects data that has already been allocated.
+You can call this function after reading the PNG data but before calling
+any png_set_*() functions, to control whether the user or the png_set_*()
+function is responsible for freeing any existing data that might be present,
+and again after the png_set_*() functions to control whether the user
+or png_destroy_*() is supposed to free the data. When the user assumes
+responsibility for libpng-allocated data, the application must use
+png_free() to free it, and when the user transfers responsibility to libpng
+for data that the user has allocated, the user must have used png_malloc()
+or png_zalloc() to allocate it.
+
+If you allocated your row_pointers in a single block, as suggested above in
+the description of the high level read interface, you must not transfer
+responsibility for freeing it to the png_set_rows or png_read_destroy function,
+because they would also try to free the individual row_pointers[i].
+
+If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
+separately, do not transfer responsibility for freeing text_ptr to libpng,
+because when libpng fills a png_text structure it combines these members with
+the key member, and png_free_data() will free only text_ptr.key. Similarly,
+if you transfer responsibility for free'ing text_ptr from libpng to your
+application, your application must not separately free those members.
+
+The png_free_data() function will turn off the "valid" flag for anything
+it frees. If you need to turn the flag off for a chunk that was freed by
+your application instead of by libpng, you can use
+
+ png_set_invalid(png_ptr, info_ptr, mask);
+
+ mask - identifies the chunks to be made invalid,
+ containing the bitwise OR of one or
+ more of
+ PNG_INFO_gAMA, PNG_INFO_sBIT,
+ PNG_INFO_cHRM, PNG_INFO_PLTE,
+ PNG_INFO_tRNS, PNG_INFO_bKGD,
+ PNG_INFO_hIST, PNG_INFO_pHYs,
+ PNG_INFO_oFFs, PNG_INFO_tIME,
+ PNG_INFO_pCAL, PNG_INFO_sRGB,
+ PNG_INFO_iCCP, PNG_INFO_sPLT,
+ PNG_INFO_sCAL, PNG_INFO_IDAT
+
+For a more compact example of reading a PNG image, see the file example.c.
+
+Reading PNG files progressively
+
+The progressive reader is slightly different then the non-progressive
+reader. Instead of calling png_read_info(), png_read_rows(), and
+png_read_end(), you make one call to png_process_data(), which calls
+callbacks when it has the info, a row, or the end of the image. You
+set up these callbacks with png_set_progressive_read_fn(). You don't
+have to worry about the input/output functions of libpng, as you are
+giving the library the data directly in png_process_data(). I will
+assume that you have read the section on reading PNG files above,
+so I will only highlight the differences (although I will show
+all of the code).
+
+png_structp png_ptr;
+png_infop info_ptr;
+
+ /* An example code fragment of how you would
+ initialize the progressive reader in your
+ application. */
+ int
+ initialize_png_reader()
+ {
+ png_ptr = png_create_read_struct
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn);
+
+ if (!png_ptr)
+ return (ERROR);
+
+ info_ptr = png_create_info_struct(png_ptr);
+
+ if (!info_ptr)
+ {
+ png_destroy_read_struct(&png_ptr,
+ (png_infopp)NULL, (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ /* This one's new. You can provide functions
+ to be called when the header info is valid,
+ when each row is completed, and when the image
+ is finished. If you aren't using all functions,
+ you can specify NULL parameters. Even when all
+ three functions are NULL, you need to call
+ png_set_progressive_read_fn(). You can use
+ any struct as the user_ptr (cast to a void pointer
+ for the function call), and retrieve the pointer
+ from inside the callbacks using the function
+
+ png_get_progressive_ptr(png_ptr);
+
+ which will return a void pointer, which you have
+ to cast appropriately.
+ */
+ png_set_progressive_read_fn(png_ptr, (void *)user_ptr,
+ info_callback, row_callback, end_callback);
+
+ return 0;
+ }
+
+ /* A code fragment that you call as you receive blocks
+ of data */
+ int
+ process_data(png_bytep buffer, png_uint_32 length)
+ {
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ /* This one's new also. Simply give it a chunk
+ of data from the file stream (in order, of
+ course). On machines with segmented memory
+ models machines, don't give it any more than
+ 64K. The library seems to run fine with sizes
+ of 4K. Although you can give it much less if
+ necessary (I assume you can give it chunks of
+ 1 byte, I haven't tried less then 256 bytes
+ yet). When this function returns, you may
+ want to display any rows that were generated
+ in the row callback if you don't already do
+ so there.
+ */
+ png_process_data(png_ptr, info_ptr, buffer, length);
+
+ /* At this point you can call png_process_data_skip if
+ you want to handle data the library will skip yourself;
+ it simply returns the number of bytes to skip (and stops
+ libpng skipping that number of bytes on the next
+ png_process_data call).
+ return 0;
+ }
+
+ /* This function is called (as set by
+ png_set_progressive_read_fn() above) when enough data
+ has been supplied so all of the header has been
+ read.
+ */
+ void
+ info_callback(png_structp png_ptr, png_infop info)
+ {
+ /* Do any setup here, including setting any of
+ the transformations mentioned in the Reading
+ PNG files section. For now, you _must_ call
+ either png_start_read_image() or
+ png_read_update_info() after all the
+ transformations are set (even if you don't set
+ any). You may start getting rows before
+ png_process_data() returns, so this is your
+ last chance to prepare for that.
+
+ This is where you turn on interlace handling,
+ assuming you don't want to do it yourself.
+
+ If you need to you can stop the processing of
+ your original input data at this point by calling
+ png_process_data_pause. This returns the number
+ of unprocessed bytes from the last png_process_data
+ call - it is up to you to ensure that the next call
+ sees these bytes again. If you don't want to bother
+ with this you can get libpng to cache the unread
+ bytes by setting the 'save' parameter (see png.h) but
+ then libpng will have to copy the data internally.
+ */
+ }
+
+ /* This function is called when each row of image
+ data is complete */
+ void
+ row_callback(png_structp png_ptr, png_bytep new_row,
+ png_uint_32 row_num, int pass)
+ {
+ /* If the image is interlaced, and you turned
+ on the interlace handler, this function will
+ be called for every row in every pass. Some
+ of these rows will not be changed from the
+ previous pass. When the row is not changed,
+ the new_row variable will be NULL. The rows
+ and passes are called in order, so you don't
+ really need the row_num and pass, but I'm
+ supplying them because it may make your life
+ easier.
+
+ If you did not turn on interlace handling then
+ the callback is called for each row of each
+ sub-image when the image is interlaced. In this
+ case 'row_num' is the row in the sub-image, not
+ the row in the output image as it is in all other
+ cases.
+
+ For the non-NULL rows of interlaced images when
+ you have switched on libpng interlace handling,
+ you must call png_progressive_combine_row()
+ passing in the row and the old row. You can
+ call this function for NULL rows (it will just
+ return) and for non-interlaced images (it just
+ does the memcpy for you) if it will make the
+ code easier. Thus, you can just do this for
+ all cases if you switch on interlace handling;
+ */
+
+ png_progressive_combine_row(png_ptr, old_row,
+ new_row);
+
+ /* where old_row is what was displayed for
+ previously for the row. Note that the first
+ pass (pass == 0, really) will completely cover
+ the old row, so the rows do not have to be
+ initialized. After the first pass (and only
+ for interlaced images), you will have to pass
+ the current row, and the function will combine
+ the old row and the new row.
+
+ You can also call png_process_data_pause in this
+ callback - see above.
+ */
+ }
+
+ void
+ end_callback(png_structp png_ptr, png_infop info)
+ {
+ /* This function is called after the whole image
+ has been read, including any chunks after the
+ image (up to and including the IEND). You
+ will usually have the same info chunk as you
+ had in the header, although some data may have
+ been added to the comments and time fields.
+
+ Most people won't do much here, perhaps setting
+ a flag that marks the image as finished.
+ */
+ }
+
+
+
+IV. Writing
+
+Much of this is very similar to reading. However, everything of
+importance is repeated here, so you won't have to constantly look
+back up in the reading section to understand writing.
+
+Setup
+
+You will want to do the I/O initialization before you get into libpng,
+so if it doesn't work, you don't have anything to undo. If you are not
+using the standard I/O functions, you will need to replace them with
+custom writing functions. See the discussion under Customizing libpng.
+
+ FILE *fp = fopen(file_name, "wb");
+
+ if (!fp)
+ return (ERROR);
+
+Next, png_struct and png_info need to be allocated and initialized.
+As these can be both relatively large, you may not want to store these
+on the stack, unless you have stack space to spare. Of course, you
+will want to check if they return NULL. If you are also reading,
+you won't want to name your read structure and your write structure
+both "png_ptr"; you can call them anything you like, such as
+"read_ptr" and "write_ptr". Look at pngtest.c, for example.
+
+ png_structp png_ptr = png_create_write_struct
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn);
+
+ if (!png_ptr)
+ return (ERROR);
+
+ png_infop info_ptr = png_create_info_struct(png_ptr);
+ if (!info_ptr)
+ {
+ png_destroy_write_struct(&png_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+If you want to use your own memory allocation routines,
+define PNG_USER_MEM_SUPPORTED and use
+png_create_write_struct_2() instead of png_create_write_struct():
+
+ png_structp png_ptr = png_create_write_struct_2
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn, (png_voidp)
+ user_mem_ptr, user_malloc_fn, user_free_fn);
+
+After you have these structures, you will need to set up the
+error handling. When libpng encounters an error, it expects to
+longjmp() back to your routine. Therefore, you will need to call
+setjmp() and pass the png_jmpbuf(png_ptr). If you
+write the file from different routines, you will need to update
+the png_jmpbuf(png_ptr) every time you enter a new routine that will
+call a png_*() function. See your documentation of setjmp/longjmp
+for your compiler for more information on setjmp/longjmp. See
+the discussion on libpng error handling in the Customizing Libpng
+section below for more information on the libpng error handling.
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ fclose(fp);
+ return (ERROR);
+ }
+ ...
+ return;
+
+If you would rather avoid the complexity of setjmp/longjmp issues,
+you can compile libpng with PNG_NO_SETJMP, in which case
+errors will result in a call to PNG_ABORT() which defaults to abort().
+
+You can #define PNG_ABORT() to a function that does something
+more useful than abort(), as long as your function does not
+return.
+
+Now you need to set up the output code. The default for libpng is to
+use the C function fwrite(). If you use this, you will need to pass a
+valid FILE * in the function png_init_io(). Be sure that the file is
+opened in binary mode. Again, if you wish to handle writing data in
+another way, see the discussion on libpng I/O handling in the Customizing
+Libpng section below.
+
+ png_init_io(png_ptr, fp);
+
+If you are embedding your PNG into a datastream such as MNG, and don't
+want libpng to write the 8-byte signature, or if you have already
+written the signature in your application, use
+
+ png_set_sig_bytes(png_ptr, 8);
+
+to inform libpng that it should not write a signature.
+
+Write callbacks
+
+At this point, you can set up a callback function that will be
+called after each row has been written, which you can use to control
+a progress meter or the like. It's demonstrated in pngtest.c.
+You must supply a function
+
+ void write_row_callback(png_structp png_ptr, png_uint_32 row,
+ int pass);
+ {
+ /* put your code here */
+ }
+
+(You can give it another name that you like instead of "write_row_callback")
+
+To inform libpng about your function, use
+
+ png_set_write_status_fn(png_ptr, write_row_callback);
+
+When this function is called the row has already been completely processed and
+it has also been written out. The 'row' and 'pass' refer to the next row to be
+handled. For the
+non-interlaced case the row that was just handled is simply one less than the
+passed in row number, and pass will always be 0. For the interlaced case the
+same applies unless the row value is 0, in which case the row just handled was
+the last one from one of the preceding passes. Because interlacing may skip a
+pass you cannot be sure that the preceding pass is just 'pass-1', if you really
+need to know what the last pass is record (row,pass) from the callback and use
+the last recorded value each time.
+
+As with the user transform you can find the output row using the
+PNG_ROW_FROM_PASS_ROW macro.
+
+You now have the option of modifying how the compression library will
+run. The following functions are mainly for testing, but may be useful
+in some cases, like if you need to write PNG files extremely fast and
+are willing to give up some compression, or if you want to get the
+maximum possible compression at the expense of slower writing. If you
+have no special needs in this area, let the library do what it wants by
+not calling this function at all, as it has been tuned to deliver a good
+speed/compression ratio. The second parameter to png_set_filter() is
+the filter method, for which the only valid values are 0 (as of the
+July 1999 PNG specification, version 1.2) or 64 (if you are writing
+a PNG datastream that is to be embedded in a MNG datastream). The third
+parameter is a flag that indicates which filter type(s) are to be tested
+for each scanline. See the PNG specification for details on the specific
+filter types.
+
+
+ /* turn on or off filtering, and/or choose
+ specific filters. You can use either a single
+ PNG_FILTER_VALUE_NAME or the bitwise OR of one
+ or more PNG_FILTER_NAME masks.
+ */
+ png_set_filter(png_ptr, 0,
+ PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE |
+ PNG_FILTER_SUB | PNG_FILTER_VALUE_SUB |
+ PNG_FILTER_UP | PNG_FILTER_VALUE_UP |
+ PNG_FILTER_AVG | PNG_FILTER_VALUE_AVG |
+ PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH|
+ PNG_ALL_FILTERS);
+
+If an application wants to start and stop using particular filters during
+compression, it should start out with all of the filters (to ensure that
+the previous row of pixels will be stored in case it's needed later),
+and then add and remove them after the start of compression.
+
+If you are writing a PNG datastream that is to be embedded in a MNG
+datastream, the second parameter can be either 0 or 64.
+
+The png_set_compression_*() functions interface to the zlib compression
+library, and should mostly be ignored unless you really know what you are
+doing. The only generally useful call is png_set_compression_level()
+which changes how much time zlib spends on trying to compress the image
+data. See the Compression Library (zlib.h and algorithm.txt, distributed
+with zlib) for details on the compression levels.
+
+ #include zlib.h
+
+ /* Set the zlib compression level */
+ png_set_compression_level(png_ptr,
+ Z_BEST_COMPRESSION);
+
+ /* Set other zlib parameters for compressing IDAT */
+ png_set_compression_mem_level(png_ptr, 8);
+ png_set_compression_strategy(png_ptr,
+ Z_DEFAULT_STRATEGY);
+ png_set_compression_window_bits(png_ptr, 15);
+ png_set_compression_method(png_ptr, 8);
+ png_set_compression_buffer_size(png_ptr, 8192)
+
+ /* Set zlib parameters for text compression
+ * If you don't call these, the parameters
+ * fall back on those defined for IDAT chunks
+ */
+ png_set_text_compression_mem_level(png_ptr, 8);
+ png_set_text_compression_strategy(png_ptr,
+ Z_DEFAULT_STRATEGY);
+ png_set_text_compression_window_bits(png_ptr, 15);
+ png_set_text_compression_method(png_ptr, 8);
+
+Setting the contents of info for output
+
+You now need to fill in the png_info structure with all the data you
+wish to write before the actual image. Note that the only thing you
+are allowed to write after the image is the text chunks and the time
+chunk (as of PNG Specification 1.2, anyway). See png_write_end() and
+the latest PNG specification for more information on that. If you
+wish to write them before the image, fill them in now, and flag that
+data as being valid. If you want to wait until after the data, don't
+fill them until png_write_end(). For all the fields in png_info and
+their data types, see png.h. For explanations of what the fields
+contain, see the PNG specification.
+
+Some of the more important parts of the png_info are:
+
+ png_set_IHDR(png_ptr, info_ptr, width, height,
+ bit_depth, color_type, interlace_type,
+ compression_type, filter_method)
+
+ width - holds the width of the image
+ in pixels (up to 2^31).
+
+ height - holds the height of the image
+ in pixels (up to 2^31).
+
+ bit_depth - holds the bit depth of one of the
+ image channels.
+ (valid values are 1, 2, 4, 8, 16
+ and depend also on the
+ color_type. See also significant
+ bits (sBIT) below).
+
+ color_type - describes which color/alpha
+ channels are present.
+ PNG_COLOR_TYPE_GRAY
+ (bit depths 1, 2, 4, 8, 16)
+ PNG_COLOR_TYPE_GRAY_ALPHA
+ (bit depths 8, 16)
+ PNG_COLOR_TYPE_PALETTE
+ (bit depths 1, 2, 4, 8)
+ PNG_COLOR_TYPE_RGB
+ (bit_depths 8, 16)
+ PNG_COLOR_TYPE_RGB_ALPHA
+ (bit_depths 8, 16)
+
+ PNG_COLOR_MASK_PALETTE
+ PNG_COLOR_MASK_COLOR
+ PNG_COLOR_MASK_ALPHA
+
+ interlace_type - PNG_INTERLACE_NONE or
+ PNG_INTERLACE_ADAM7
+
+ compression_type - (must be
+ PNG_COMPRESSION_TYPE_DEFAULT)
+
+ filter_method - (must be PNG_FILTER_TYPE_DEFAULT
+ or, if you are writing a PNG to
+ be embedded in a MNG datastream,
+ can also be
+ PNG_INTRAPIXEL_DIFFERENCING)
+
+If you call png_set_IHDR(), the call must appear before any of the
+other png_set_*() functions, because they might require access to some of
+the IHDR settings. The remaining png_set_*() functions can be called
+in any order.
+
+If you wish, you can reset the compression_type, interlace_type, or
+filter_method later by calling png_set_IHDR() again; if you do this, the
+width, height, bit_depth, and color_type must be the same in each call.
+
+ png_set_PLTE(png_ptr, info_ptr, palette,
+ num_palette);
+
+ palette - the palette for the file
+ (array of png_color)
+ num_palette - number of entries in the palette
+
+ png_set_gAMA(png_ptr, info_ptr, file_gamma);
+ png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma);
+
+ file_gamma - the gamma at which the image was
+ created (PNG_INFO_gAMA)
+
+ int_file_gamma - 100,000 times the gamma at which
+ the image was created
+
+ png_set_cHRM(png_ptr, info_ptr, white_x, white_y, red_x, red_y,
+ green_x, green_y, blue_x, blue_y)
+ png_set_cHRM_XYZ(png_ptr, info_ptr, red_X, red_Y, red_Z, green_X,
+ green_Y, green_Z, blue_X, blue_Y, blue_Z)
+ png_set_cHRM_fixed(png_ptr, info_ptr, int_white_x, int_white_y,
+ int_red_x, int_red_y, int_green_x, int_green_y,
+ int_blue_x, int_blue_y)
+ png_set_cHRM_XYZ_fixed(png_ptr, info_ptr, int_red_X, int_red_Y,
+ int_red_Z, int_green_X, int_green_Y, int_green_Z,
+ int_blue_X, int_blue_Y, int_blue_Z)
+
+ {white,red,green,blue}_{x,y}
+ A color space encoding specified using the chromaticities
+ of the end points and the white point.
+
+ {red,green,blue}_{X,Y,Z}
+ A color space encoding specified using the encoding end
+ points - the CIE tristimulus specification of the intended
+ color of the red, green and blue channels in the PNG RGB
+ data. The white point is simply the sum of the three end
+ points.
+
+ png_set_sRGB(png_ptr, info_ptr, srgb_intent);
+
+ srgb_intent - the rendering intent
+ (PNG_INFO_sRGB) The presence of
+ the sRGB chunk means that the pixel
+ data is in the sRGB color space.
+ This chunk also implies specific
+ values of gAMA and cHRM. Rendering
+ intent is the CSS-1 property that
+ has been defined by the International
+ Color Consortium
+ (http://www.color.org).
+ It can be one of
+ PNG_sRGB_INTENT_SATURATION,
+ PNG_sRGB_INTENT_PERCEPTUAL,
+ PNG_sRGB_INTENT_ABSOLUTE, or
+ PNG_sRGB_INTENT_RELATIVE.
+
+
+ png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr,
+ srgb_intent);
+
+ srgb_intent - the rendering intent
+ (PNG_INFO_sRGB) The presence of the
+ sRGB chunk means that the pixel
+ data is in the sRGB color space.
+ This function also causes gAMA and
+ cHRM chunks with the specific values
+ that are consistent with sRGB to be
+ written.
+
+ png_set_iCCP(png_ptr, info_ptr, name, compression_type,
+ profile, proflen);
+
+ name - The profile name.
+
+ compression_type - The compression type; always
+ PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
+ You may give NULL to this argument to
+ ignore it.
+
+ profile - International Color Consortium color
+ profile data. May contain NULs.
+
+ proflen - length of profile data in bytes.
+
+ png_set_sBIT(png_ptr, info_ptr, sig_bit);
+
+ sig_bit - the number of significant bits for
+ (PNG_INFO_sBIT) each of the gray, red,
+ green, and blue channels, whichever are
+ appropriate for the given color type
+ (png_color_16)
+
+ png_set_tRNS(png_ptr, info_ptr, trans_alpha,
+ num_trans, trans_color);
+
+ trans_alpha - array of alpha (transparency)
+ entries for palette (PNG_INFO_tRNS)
+
+ num_trans - number of transparent entries
+ (PNG_INFO_tRNS)
+
+ trans_color - graylevel or color sample values
+ (in order red, green, blue) of the
+ single transparent color for
+ non-paletted images (PNG_INFO_tRNS)
+
+ png_set_hIST(png_ptr, info_ptr, hist);
+
+ hist - histogram of palette (array of
+ png_uint_16) (PNG_INFO_hIST)
+
+ png_set_tIME(png_ptr, info_ptr, mod_time);
+
+ mod_time - time image was last modified
+ (PNG_VALID_tIME)
+
+ png_set_bKGD(png_ptr, info_ptr, background);
+
+ background - background color (of type
+ png_color_16p) (PNG_VALID_bKGD)
+
+ png_set_text(png_ptr, info_ptr, text_ptr, num_text);
+
+ text_ptr - array of png_text holding image
+ comments
+
+ text_ptr[i].compression - type of compression used
+ on "text" PNG_TEXT_COMPRESSION_NONE
+ PNG_TEXT_COMPRESSION_zTXt
+ PNG_ITXT_COMPRESSION_NONE
+ PNG_ITXT_COMPRESSION_zTXt
+ text_ptr[i].key - keyword for comment. Must contain
+ 1-79 characters.
+ text_ptr[i].text - text comments for current
+ keyword. Can be NULL or empty.
+ text_ptr[i].text_length - length of text string,
+ after decompression, 0 for iTXt
+ text_ptr[i].itxt_length - length of itxt string,
+ after decompression, 0 for tEXt/zTXt
+ text_ptr[i].lang - language of comment (NULL or
+ empty for unknown).
+ text_ptr[i].translated_keyword - keyword in UTF-8 (NULL
+ or empty for unknown).
+
+ Note that the itxt_length, lang, and lang_key
+ members of the text_ptr structure only exist when the
+ library is built with iTXt chunk support. Prior to
+ libpng-1.4.0 the library was built by default without
+ iTXt support. Also note that when iTXt is supported,
+ they contain NULL pointers when the "compression"
+ field contains PNG_TEXT_COMPRESSION_NONE or
+ PNG_TEXT_COMPRESSION_zTXt.
+
+ num_text - number of comments
+
+ png_set_sPLT(png_ptr, info_ptr, &palette_ptr,
+ num_spalettes);
+
+ palette_ptr - array of png_sPLT_struct structures
+ to be added to the list of palettes
+ in the info structure.
+ num_spalettes - number of palette structures to be
+ added.
+
+ png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y,
+ unit_type);
+
+ offset_x - positive offset from the left
+ edge of the screen
+
+ offset_y - positive offset from the top
+ edge of the screen
+
+ unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
+
+ png_set_pHYs(png_ptr, info_ptr, res_x, res_y,
+ unit_type);
+
+ res_x - pixels/unit physical resolution
+ in x direction
+
+ res_y - pixels/unit physical resolution
+ in y direction
+
+ unit_type - PNG_RESOLUTION_UNKNOWN,
+ PNG_RESOLUTION_METER
+
+ png_set_sCAL(png_ptr, info_ptr, unit, width, height)
+
+ unit - physical scale units (an integer)
+
+ width - width of a pixel in physical scale units
+
+ height - height of a pixel in physical scale units
+ (width and height are doubles)
+
+ png_set_sCAL_s(png_ptr, info_ptr, unit, width, height)
+
+ unit - physical scale units (an integer)
+
+ width - width of a pixel in physical scale units
+ expressed as a string
+
+ height - height of a pixel in physical scale units
+ (width and height are strings like "2.54")
+
+ png_set_unknown_chunks(png_ptr, info_ptr, &unknowns,
+ num_unknowns)
+
+ unknowns - array of png_unknown_chunk
+ structures holding unknown chunks
+ unknowns[i].name - name of unknown chunk
+ unknowns[i].data - data of unknown chunk
+ unknowns[i].size - size of unknown chunk's data
+ unknowns[i].location - position to write chunk in file
+ 0: do not write chunk
+ PNG_HAVE_IHDR: before PLTE
+ PNG_HAVE_PLTE: before IDAT
+ PNG_AFTER_IDAT: after IDAT
+
+The "location" member is set automatically according to
+what part of the output file has already been written.
+You can change its value after calling png_set_unknown_chunks()
+as demonstrated in pngtest.c. Within each of the "locations",
+the chunks are sequenced according to their position in the
+structure (that is, the value of "i", which is the order in which
+the chunk was either read from the input file or defined with
+png_set_unknown_chunks).
+
+A quick word about text and num_text. text is an array of png_text
+structures. num_text is the number of valid structures in the array.
+Each png_text structure holds a language code, a keyword, a text value,
+and a compression type.
+
+The compression types have the same valid numbers as the compression
+types of the image data. Currently, the only valid number is zero.
+However, you can store text either compressed or uncompressed, unlike
+images, which always have to be compressed. So if you don't want the
+text compressed, set the compression type to PNG_TEXT_COMPRESSION_NONE.
+Because tEXt and zTXt chunks don't have a language field, if you
+specify PNG_TEXT_COMPRESSION_NONE or PNG_TEXT_COMPRESSION_zTXt
+any language code or translated keyword will not be written out.
+
+Until text gets around a few hundred bytes, it is not worth compressing it.
+After the text has been written out to the file, the compression type
+is set to PNG_TEXT_COMPRESSION_NONE_WR or PNG_TEXT_COMPRESSION_zTXt_WR,
+so that it isn't written out again at the end (in case you are calling
+png_write_end() with the same struct).
+
+The keywords that are given in the PNG Specification are:
+
+ Title Short (one line) title or
+ caption for image
+
+ Author Name of image's creator
+
+ Description Description of image (possibly long)
+
+ Copyright Copyright notice
+
+ Creation Time Time of original image creation
+ (usually RFC 1123 format, see below)
+
+ Software Software used to create the image
+
+ Disclaimer Legal disclaimer
+
+ Warning Warning of nature of content
+
+ Source Device used to create the image
+
+ Comment Miscellaneous comment; conversion
+ from other image format
+
+The keyword-text pairs work like this. Keywords should be short
+simple descriptions of what the comment is about. Some typical
+keywords are found in the PNG specification, as is some recommendations
+on keywords. You can repeat keywords in a file. You can even write
+some text before the image and some after. For example, you may want
+to put a description of the image before the image, but leave the
+disclaimer until after, so viewers working over modem connections
+don't have to wait for the disclaimer to go over the modem before
+they start seeing the image. Finally, keywords should be full
+words, not abbreviations. Keywords and text are in the ISO 8859-1
+(Latin-1) character set (a superset of regular ASCII) and can not
+contain NUL characters, and should not contain control or other
+unprintable characters. To make the comments widely readable, stick
+with basic ASCII, and avoid machine specific character set extensions
+like the IBM-PC character set. The keyword must be present, but
+you can leave off the text string on non-compressed pairs.
+Compressed pairs must have a text string, as only the text string
+is compressed anyway, so the compression would be meaningless.
+
+PNG supports modification time via the png_time structure. Two
+conversion routines are provided, png_convert_from_time_t() for
+time_t and png_convert_from_struct_tm() for struct tm. The
+time_t routine uses gmtime(). You don't have to use either of
+these, but if you wish to fill in the png_time structure directly,
+you should provide the time in universal time (GMT) if possible
+instead of your local time. Note that the year number is the full
+year (e.g. 1998, rather than 98 - PNG is year 2000 compliant!), and
+that months start with 1.
+
+If you want to store the time of the original image creation, you should
+use a plain tEXt chunk with the "Creation Time" keyword. This is
+necessary because the "creation time" of a PNG image is somewhat vague,
+depending on whether you mean the PNG file, the time the image was
+created in a non-PNG format, a still photo from which the image was
+scanned, or possibly the subject matter itself. In order to facilitate
+machine-readable dates, it is recommended that the "Creation Time"
+tEXt chunk use RFC 1123 format dates (e.g. "22 May 1997 18:07:10 GMT"),
+although this isn't a requirement. Unlike the tIME chunk, the
+"Creation Time" tEXt chunk is not expected to be automatically changed
+by the software. To facilitate the use of RFC 1123 dates, a function
+png_convert_to_rfc1123(png_timep) is provided to convert from PNG
+time to an RFC 1123 format string.
+
+Writing unknown chunks
+
+You can use the png_set_unknown_chunks function to queue up chunks
+for writing. You give it a chunk name, raw data, and a size; that's
+all there is to it. The chunks will be written by the next following
+png_write_info_before_PLTE, png_write_info, or png_write_end function.
+Any chunks previously read into the info structure's unknown-chunk
+list will also be written out in a sequence that satisfies the PNG
+specification's ordering rules.
+
+The high-level write interface
+
+At this point there are two ways to proceed; through the high-level
+write interface, or through a sequence of low-level write operations.
+You can use the high-level interface if your image data is present
+in the info structure. All defined output
+transformations are permitted, enabled by the following masks.
+
+ PNG_TRANSFORM_IDENTITY No transformation
+ PNG_TRANSFORM_PACKING Pack 1, 2 and 4-bit samples
+ PNG_TRANSFORM_PACKSWAP Change order of packed
+ pixels to LSB first
+ PNG_TRANSFORM_INVERT_MONO Invert monochrome images
+ PNG_TRANSFORM_SHIFT Normalize pixels to the
+ sBIT depth
+ PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA
+ to BGRA
+ PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA
+ to AG
+ PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
+ to transparency
+ PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
+ PNG_TRANSFORM_STRIP_FILLER Strip out filler
+ bytes (deprecated).
+ PNG_TRANSFORM_STRIP_FILLER_BEFORE Strip out leading
+ filler bytes
+ PNG_TRANSFORM_STRIP_FILLER_AFTER Strip out trailing
+ filler bytes
+
+If you have valid image data in the info structure (you can use
+png_set_rows() to put image data in the info structure), simply do this:
+
+ png_write_png(png_ptr, info_ptr, png_transforms, NULL)
+
+where png_transforms is an integer containing the bitwise OR of some set of
+transformation flags. This call is equivalent to png_write_info(),
+followed the set of transformations indicated by the transform mask,
+then png_write_image(), and finally png_write_end().
+
+(The final parameter of this call is not yet used. Someday it might point
+to transformation parameters required by some future output transform.)
+
+You must use png_transforms and not call any png_set_transform() functions
+when you use png_write_png().
+
+The low-level write interface
+
+If you are going the low-level route instead, you are now ready to
+write all the file information up to the actual image data. You do
+this with a call to png_write_info().
+
+ png_write_info(png_ptr, info_ptr);
+
+Note that there is one transformation you may need to do before
+png_write_info(). In PNG files, the alpha channel in an image is the
+level of opacity. If your data is supplied as a level of transparency,
+you can invert the alpha channel before you write it, so that 0 is
+fully transparent and 255 (in 8-bit or paletted images) or 65535
+(in 16-bit images) is fully opaque, with
+
+ png_set_invert_alpha(png_ptr);
+
+This must appear before png_write_info() instead of later with the
+other transformations because in the case of paletted images the tRNS
+chunk data has to be inverted before the tRNS chunk is written. If
+your image is not a paletted image, the tRNS data (which in such cases
+represents a single color to be rendered as transparent) won't need to
+be changed, and you can safely do this transformation after your
+png_write_info() call.
+
+If you need to write a private chunk that you want to appear before
+the PLTE chunk when PLTE is present, you can write the PNG info in
+two steps, and insert code to write your own chunk between them:
+
+ png_write_info_before_PLTE(png_ptr, info_ptr);
+ png_set_unknown_chunks(png_ptr, info_ptr, ...);
+ png_write_info(png_ptr, info_ptr);
+
+After you've written the file information, you can set up the library
+to handle any special transformations of the image data. The various
+ways to transform the data will be described in the order that they
+should occur. This is important, as some of these change the color
+type and/or bit depth of the data, and some others only work on
+certain color types and bit depths. Even though each transformation
+checks to see if it has data that it can do something with, you should
+make sure to only enable a transformation if it will be valid for the
+data. For example, don't swap red and blue on grayscale data.
+
+PNG files store RGB pixels packed into 3 or 6 bytes. This code tells
+the library to strip input data that has 4 or 8 bytes per pixel down
+to 3 or 6 bytes (or strip 2 or 4-byte grayscale+filler data to 1 or 2
+bytes per pixel).
+
+ png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
+
+where the 0 is unused, and the location is either PNG_FILLER_BEFORE or
+PNG_FILLER_AFTER, depending upon whether the filler byte in the pixel
+is stored XRGB or RGBX.
+
+PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
+they can, resulting in, for example, 8 pixels per byte for 1 bit files.
+If the data is supplied at 1 pixel per byte, use this code, which will
+correctly pack the pixels into a single byte:
+
+ png_set_packing(png_ptr);
+
+PNG files reduce possible bit depths to 1, 2, 4, 8, and 16. If your
+data is of another bit depth, you can write an sBIT chunk into the
+file so that decoders can recover the original data if desired.
+
+ /* Set the true bit depth of the image data */
+ if (color_type & PNG_COLOR_MASK_COLOR)
+ {
+ sig_bit.red = true_bit_depth;
+ sig_bit.green = true_bit_depth;
+ sig_bit.blue = true_bit_depth;
+ }
+
+ else
+ {
+ sig_bit.gray = true_bit_depth;
+ }
+
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ sig_bit.alpha = true_bit_depth;
+ }
+
+ png_set_sBIT(png_ptr, info_ptr, &sig_bit);
+
+If the data is stored in the row buffer in a bit depth other than
+one supported by PNG (e.g. 3 bit data in the range 0-7 for a 4-bit PNG),
+this will scale the values to appear to be the correct bit depth as
+is required by PNG.
+
+ png_set_shift(png_ptr, &sig_bit);
+
+PNG files store 16-bit pixels in network byte order (big-endian,
+ie. most significant bits first). This code would be used if they are
+supplied the other way (little-endian, i.e. least significant bits
+first, the way PCs store them):
+
+ if (bit_depth > 8)
+ png_set_swap(png_ptr);
+
+If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
+need to change the order the pixels are packed into bytes, you can use:
+
+ if (bit_depth < 8)
+ png_set_packswap(png_ptr);
+
+PNG files store 3 color pixels in red, green, blue order. This code
+would be used if they are supplied as blue, green, red:
+
+ png_set_bgr(png_ptr);
+
+PNG files describe monochrome as black being zero and white being
+one. This code would be used if the pixels are supplied with this reversed
+(black being one and white being zero):
+
+ png_set_invert_mono(png_ptr);
+
+Finally, you can write your own transformation function if none of
+the existing ones meets your needs. This is done by setting a callback
+with
+
+ png_set_write_user_transform_fn(png_ptr,
+ write_transform_fn);
+
+You must supply the function
+
+ void write_transform_fn(png_structp png_ptr, png_row_infop
+ row_info, png_bytep data)
+
+See pngtest.c for a working example. Your function will be called
+before any of the other transformations are processed. If supported
+libpng also supplies an information routine that may be called from
+your callback:
+
+ png_get_current_row_number(png_ptr);
+ png_get_current_pass_number(png_ptr);
+
+This returns the current row passed to the transform. With interlaced
+images the value returned is the row in the input sub-image image. Use
+PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
+find the output pixel (x,y) given an interlaced sub-image pixel (row,col,pass).
+
+The discussion of interlace handling above contains more information on how to
+use these values.
+
+You can also set up a pointer to a user structure for use by your
+callback function.
+
+ png_set_user_transform_info(png_ptr, user_ptr, 0, 0);
+
+The user_channels and user_depth parameters of this function are ignored
+when writing; you can set them to zero as shown.
+
+You can retrieve the pointer via the function png_get_user_transform_ptr().
+For example:
+
+ voidp write_user_transform_ptr =
+ png_get_user_transform_ptr(png_ptr);
+
+It is possible to have libpng flush any pending output, either manually,
+or automatically after a certain number of lines have been written. To
+flush the output stream a single time call:
+
+ png_write_flush(png_ptr);
+
+and to have libpng flush the output stream periodically after a certain
+number of scanlines have been written, call:
+
+ png_set_flush(png_ptr, nrows);
+
+Note that the distance between rows is from the last time png_write_flush()
+was called, or the first row of the image if it has never been called.
+So if you write 50 lines, and then png_set_flush 25, it will flush the
+output on the next scanline, and every 25 lines thereafter, unless
+png_write_flush() is called before 25 more lines have been written.
+If nrows is too small (less than about 10 lines for a 640 pixel wide
+RGB image) the image compression may decrease noticeably (although this
+may be acceptable for real-time applications). Infrequent flushing will
+only degrade the compression performance by a few percent over images
+that do not use flushing.
+
+Writing the image data
+
+That's it for the transformations. Now you can write the image data.
+The simplest way to do this is in one function call. If you have the
+whole image in memory, you can just call png_write_image() and libpng
+will write the image. You will need to pass in an array of pointers to
+each row. This function automatically handles interlacing, so you don't
+need to call png_set_interlace_handling() or call this function multiple
+times, or any of that other stuff necessary with png_write_rows().
+
+ png_write_image(png_ptr, row_pointers);
+
+where row_pointers is:
+
+ png_byte *row_pointers[height];
+
+You can point to void or char or whatever you use for pixels.
+
+If you don't want to write the whole image at once, you can
+use png_write_rows() instead. If the file is not interlaced,
+this is simple:
+
+ png_write_rows(png_ptr, row_pointers,
+ number_of_rows);
+
+row_pointers is the same as in the png_write_image() call.
+
+If you are just writing one row at a time, you can do this with
+a single row_pointer instead of an array of row_pointers:
+
+ png_bytep row_pointer = row;
+
+ png_write_row(png_ptr, row_pointer);
+
+When the file is interlaced, things can get a good deal more complicated.
+The only currently (as of the PNG Specification version 1.2, dated July
+1999) defined interlacing scheme for PNG files is the "Adam7" interlace
+scheme, that breaks down an image into seven smaller images of varying
+size. libpng will build these images for you, or you can do them
+yourself. If you want to build them yourself, see the PNG specification
+for details of which pixels to write when.
+
+If you don't want libpng to handle the interlacing details, just
+use png_set_interlace_handling() and call png_write_rows() the
+correct number of times to write all the sub-images
+(png_set_interlace_handling() returns the number of sub-images.)
+
+If you want libpng to build the sub-images, call this before you start
+writing any rows:
+
+ number_of_passes = png_set_interlace_handling(png_ptr);
+
+This will return the number of passes needed. Currently, this is seven,
+but may change if another interlace type is added.
+
+Then write the complete image number_of_passes times.
+
+ png_write_rows(png_ptr, row_pointers, number_of_rows);
+
+Think carefully before you write an interlaced image. Typically code that
+reads such images reads all the image data into memory, uncompressed, before
+doing any processing. Only code that can display an image on the fly can
+take advantage of the interlacing and even then the image has to be exactly
+the correct size for the output device, because scaling an image requires
+adjacent pixels and these are not available until all the passes have been
+read.
+
+If you do write an interlaced image you will hardly ever need to handle
+the interlacing yourself. Call png_set_interlace_handling() and use the
+approach described above.
+
+The only time it is conceivable that you will really need to write an
+interlaced image pass-by-pass is when you have read one pass by pass and
+made some pixel-by-pixel transformation to it, as described in the read
+code above. In this case use the PNG_PASS_ROWS and PNG_PASS_COLS macros
+to determine the size of each sub-image in turn and simply write the rows
+you obtained from the read code.
+
+Finishing a sequential write
+
+After you are finished writing the image, you should finish writing
+the file. If you are interested in writing comments or time, you should
+pass an appropriately filled png_info pointer. If you are not interested,
+you can pass NULL.
+
+ png_write_end(png_ptr, info_ptr);
+
+When you are done, you can free all memory used by libpng like this:
+
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+
+It is also possible to individually free the info_ptr members that
+point to libpng-allocated storage with the following function:
+
+ png_free_data(png_ptr, info_ptr, mask, seq)
+
+ mask - identifies data to be freed, a mask
+ containing the bitwise OR of one or
+ more of
+ PNG_FREE_PLTE, PNG_FREE_TRNS,
+ PNG_FREE_HIST, PNG_FREE_ICCP,
+ PNG_FREE_PCAL, PNG_FREE_ROWS,
+ PNG_FREE_SCAL, PNG_FREE_SPLT,
+ PNG_FREE_TEXT, PNG_FREE_UNKN,
+ or simply PNG_FREE_ALL
+
+ seq - sequence number of item to be freed
+ (-1 for all items)
+
+This function may be safely called when the relevant storage has
+already been freed, or has not yet been allocated, or was allocated
+by the user and not by libpng, and will in those cases do nothing.
+The "seq" parameter is ignored if only one item of the selected data
+type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
+are allowed for the data type identified in the mask, such as text or
+sPLT, only the n'th item in the structure is freed, where n is "seq".
+
+If you allocated data such as a palette that you passed in to libpng
+with png_set_*, you must not free it until just before the call to
+png_destroy_write_struct().
+
+The default behavior is only to free data that was allocated internally
+by libpng. This can be changed, so that libpng will not free the data,
+or so that it will free data that was allocated by the user with png_malloc()
+or png_zalloc() and passed in via a png_set_*() function, with
+
+ png_data_freer(png_ptr, info_ptr, freer, mask)
+
+ freer - one of
+ PNG_DESTROY_WILL_FREE_DATA
+ PNG_SET_WILL_FREE_DATA
+ PNG_USER_WILL_FREE_DATA
+
+ mask - which data elements are affected
+ same choices as in png_free_data()
+
+For example, to transfer responsibility for some data from a read structure
+to a write structure, you could use
+
+ png_data_freer(read_ptr, read_info_ptr,
+ PNG_USER_WILL_FREE_DATA,
+ PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+
+ png_data_freer(write_ptr, write_info_ptr,
+ PNG_DESTROY_WILL_FREE_DATA,
+ PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+
+thereby briefly reassigning responsibility for freeing to the user but
+immediately afterwards reassigning it once more to the write_destroy
+function. Having done this, it would then be safe to destroy the read
+structure and continue to use the PLTE, tRNS, and hIST data in the write
+structure.
+
+This function only affects data that has already been allocated.
+You can call this function before calling after the png_set_*() functions
+to control whether the user or png_destroy_*() is supposed to free the data.
+When the user assumes responsibility for libpng-allocated data, the
+application must use
+png_free() to free it, and when the user transfers responsibility to libpng
+for data that the user has allocated, the user must have used png_malloc()
+or png_zalloc() to allocate it.
+
+If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
+separately, do not transfer responsibility for freeing text_ptr to libpng,
+because when libpng fills a png_text structure it combines these members with
+the key member, and png_free_data() will free only text_ptr.key. Similarly,
+if you transfer responsibility for free'ing text_ptr from libpng to your
+application, your application must not separately free those members.
+For a more compact example of writing a PNG image, see the file example.c.
+
+V. Modifying/Customizing libpng:
+
+There are two issues here. The first is changing how libpng does
+standard things like memory allocation, input/output, and error handling.
+The second deals with more complicated things like adding new chunks,
+adding new transformations, and generally changing how libpng works.
+Both of those are compile-time issues; that is, they are generally
+determined at the time the code is written, and there is rarely a need
+to provide the user with a means of changing them.
+
+Memory allocation, input/output, and error handling
+
+All of the memory allocation, input/output, and error handling in libpng
+goes through callbacks that are user-settable. The default routines are
+in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively. To change
+these functions, call the appropriate png_set_*_fn() function.
+
+Memory allocation is done through the functions png_malloc(), png_calloc(),
+and png_free(). These currently just call the standard C functions.
+png_calloc() calls png_malloc() and then clears the newly
+allocated memory to zero. There is limited support for certain systems
+with segmented memory architectures and the types of pointers declared by
+png.h match this; you will have to use appropriate pointers in your
+application. Since it is
+unlikely that the method of handling memory allocation on a platform
+will change between applications, these functions must be modified in
+the library at compile time. If you prefer to use a different method
+of allocating and freeing data, you can use png_create_read_struct_2() or
+png_create_write_struct_2() to register your own functions as described
+above. These functions also provide a void pointer that can be retrieved
+via
+
+ mem_ptr=png_get_mem_ptr(png_ptr);
+
+Your replacement memory functions must have prototypes as follows:
+
+ png_voidp malloc_fn(png_structp png_ptr,
+ png_alloc_size_t size);
+
+ void free_fn(png_structp png_ptr, png_voidp ptr);
+
+Your malloc_fn() must return NULL in case of failure. The png_malloc()
+function will normally call png_error() if it receives a NULL from the
+system memory allocator or from your replacement malloc_fn().
+
+Your free_fn() will never be called with a NULL ptr, since libpng's
+png_free() checks for NULL before calling free_fn().
+
+Input/Output in libpng is done through png_read() and png_write(),
+which currently just call fread() and fwrite(). The FILE * is stored in
+png_struct and is initialized via png_init_io(). If you wish to change
+the method of I/O, the library supplies callbacks that you can set
+through the function png_set_read_fn() and png_set_write_fn() at run
+time, instead of calling the png_init_io() function. These functions
+also provide a void pointer that can be retrieved via the function
+png_get_io_ptr(). For example:
+
+ png_set_read_fn(png_structp read_ptr,
+ voidp read_io_ptr, png_rw_ptr read_data_fn)
+
+ png_set_write_fn(png_structp write_ptr,
+ voidp write_io_ptr, png_rw_ptr write_data_fn,
+ png_flush_ptr output_flush_fn);
+
+ voidp read_io_ptr = png_get_io_ptr(read_ptr);
+ voidp write_io_ptr = png_get_io_ptr(write_ptr);
+
+The replacement I/O functions must have prototypes as follows:
+
+ void user_read_data(png_structp png_ptr,
+ png_bytep data, png_size_t length);
+
+ void user_write_data(png_structp png_ptr,
+ png_bytep data, png_size_t length);
+
+ void user_flush_data(png_structp png_ptr);
+
+The user_read_data() function is responsible for detecting and
+handling end-of-data errors.
+
+Supplying NULL for the read, write, or flush functions sets them back
+to using the default C stream functions, which expect the io_ptr to
+point to a standard *FILE structure. It is probably a mistake
+to use NULL for one of write_data_fn and output_flush_fn but not both
+of them, unless you have built libpng with PNG_NO_WRITE_FLUSH defined.
+It is an error to read from a write stream, and vice versa.
+
+Error handling in libpng is done through png_error() and png_warning().
+Errors handled through png_error() are fatal, meaning that png_error()
+should never return to its caller. Currently, this is handled via
+setjmp() and longjmp() (unless you have compiled libpng with
+PNG_NO_SETJMP, in which case it is handled via PNG_ABORT()),
+but you could change this to do things like exit() if you should wish,
+as long as your function does not return.
+
+On non-fatal errors, png_warning() is called
+to print a warning message, and then control returns to the calling code.
+By default png_error() and png_warning() print a message on stderr via
+fprintf() unless the library is compiled with PNG_NO_CONSOLE_IO defined
+(because you don't want the messages) or PNG_NO_STDIO defined (because
+fprintf() isn't available). If you wish to change the behavior of the error
+functions, you will need to set up your own message callbacks. These
+functions are normally supplied at the time that the png_struct is created.
+It is also possible to redirect errors and warnings to your own replacement
+functions after png_create_*_struct() has been called by calling:
+
+ png_set_error_fn(png_structp png_ptr,
+ png_voidp error_ptr, png_error_ptr error_fn,
+ png_error_ptr warning_fn);
+
+ png_voidp error_ptr = png_get_error_ptr(png_ptr);
+
+If NULL is supplied for either error_fn or warning_fn, then the libpng
+default function will be used, calling fprintf() and/or longjmp() if a
+problem is encountered. The replacement error functions should have
+parameters as follows:
+
+ void user_error_fn(png_structp png_ptr,
+ png_const_charp error_msg);
+
+ void user_warning_fn(png_structp png_ptr,
+ png_const_charp warning_msg);
+
+The motivation behind using setjmp() and longjmp() is the C++ throw and
+catch exception handling methods. This makes the code much easier to write,
+as there is no need to check every return code of every function call.
+However, there are some uncertainties about the status of local variables
+after a longjmp, so the user may want to be careful about doing anything
+after setjmp returns non-zero besides returning itself. Consult your
+compiler documentation for more details. For an alternative approach, you
+may wish to use the "cexcept" facility (see http://cexcept.sourceforge.net),
+which is illustrated in pngvalid.c and in contrib/visupng.
+
+Custom chunks
+
+If you need to read or write custom chunks, you may need to get deeper
+into the libpng code. The library now has mechanisms for storing
+and writing chunks of unknown type; you can even declare callbacks
+for custom chunks. However, this may not be good enough if the
+library code itself needs to know about interactions between your
+chunk and existing `intrinsic' chunks.
+
+If you need to write a new intrinsic chunk, first read the PNG
+specification. Acquire a first level of understanding of how it works.
+Pay particular attention to the sections that describe chunk names,
+and look at how other chunks were designed, so you can do things
+similarly. Second, check out the sections of libpng that read and
+write chunks. Try to find a chunk that is similar to yours and use
+it as a template. More details can be found in the comments inside
+the code. It is best to handle private or unknown chunks in a generic method,
+via callback functions, instead of by modifying libpng functions. This
+is illustrated in pngtest.c, which uses a callback function to handle a
+private "vpAg" chunk and the new "sTER" chunk, which are both unknown to
+libpng.
+
+If you wish to write your own transformation for the data, look through
+the part of the code that does the transformations, and check out some of
+the simpler ones to get an idea of how they work. Try to find a similar
+transformation to the one you want to add and copy off of it. More details
+can be found in the comments inside the code itself.
+
+Configuring for 16-bit platforms
+
+You will want to look into zconf.h to tell zlib (and thus libpng) that
+it cannot allocate more then 64K at a time. Even if you can, the memory
+won't be accessible. So limit zlib and libpng to 64K by defining MAXSEG_64K.
+
+Configuring for DOS
+
+For DOS users who only have access to the lower 640K, you will
+have to limit zlib's memory usage via a png_set_compression_mem_level()
+call. See zlib.h or zconf.h in the zlib library for more information.
+
+Configuring for Medium Model
+
+Libpng's support for medium model has been tested on most of the popular
+compilers. Make sure MAXSEG_64K gets defined, USE_FAR_KEYWORD gets
+defined, and FAR gets defined to far in pngconf.h, and you should be
+all set. Everything in the library (except for zlib's structure) is
+expecting far data. You must use the typedefs with the p or pp on
+the end for pointers (or at least look at them and be careful). Make
+note that the rows of data are defined as png_bytepp, which is
+an "unsigned char far * far *".
+
+Configuring for gui/windowing platforms:
+
+You will need to write new error and warning functions that use the GUI
+interface, as described previously, and set them to be the error and
+warning functions at the time that png_create_*_struct() is called,
+in order to have them available during the structure initialization.
+They can be changed later via png_set_error_fn(). On some compilers,
+you may also have to change the memory allocators (png_malloc, etc.).
+
+Configuring for compiler xxx:
+
+All includes for libpng are in pngconf.h. If you need to add, change
+or delete an include, this is the place to do it.
+The includes that are not needed outside libpng are placed in pngpriv.h,
+which is only used by the routines inside libpng itself.
+The files in libpng proper only include pngpriv.h and png.h, which
+in turn includes pngconf.h and, as of libpng-1.5.0, pnglibconf.h.
+As of libpng-1.5.0, pngpriv.h also includes three other private header
+files, pngstruct.h, pnginfo.h, and pngdebug.h, which contain material
+that previously appeared in the public headers.
+
+Configuring zlib:
+
+There are special functions to configure the compression. Perhaps the
+most useful one changes the compression level, which currently uses
+input compression values in the range 0 - 9. The library normally
+uses the default compression level (Z_DEFAULT_COMPRESSION = 6). Tests
+have shown that for a large majority of images, compression values in
+the range 3-6 compress nearly as well as higher levels, and do so much
+faster. For online applications it may be desirable to have maximum speed
+(Z_BEST_SPEED = 1). With versions of zlib after v0.99, you can also
+specify no compression (Z_NO_COMPRESSION = 0), but this would create
+files larger than just storing the raw bitmap. You can specify the
+compression level by calling:
+
+ #include zlib.h
+ png_set_compression_level(png_ptr, level);
+
+Another useful one is to reduce the memory level used by the library.
+The memory level defaults to 8, but it can be lowered if you are
+short on memory (running DOS, for example, where you only have 640K).
+Note that the memory level does have an effect on compression; among
+other things, lower levels will result in sections of incompressible
+data being emitted in smaller stored blocks, with a correspondingly
+larger relative overhead of up to 15% in the worst case.
+
+ #include zlib.h
+ png_set_compression_mem_level(png_ptr, level);
+
+The other functions are for configuring zlib. They are not recommended
+for normal use and may result in writing an invalid PNG file. See
+zlib.h for more information on what these mean.
+
+ #include zlib.h
+ png_set_compression_strategy(png_ptr,
+ strategy);
+
+ png_set_compression_window_bits(png_ptr,
+ window_bits);
+
+ png_set_compression_method(png_ptr, method);
+
+ png_set_compression_buffer_size(png_ptr, size);
+
+As of libpng version 1.5.4, additional APIs became
+available to set these separately for non-IDAT
+compressed chunks such as zTXt, iTXt, and iCCP:
+
+ #include zlib.h
+ #if PNG_LIBPNG_VER <= 10504
+ png_set_text_compression_level(png_ptr, level);
+
+ png_set_text_compression_mem_level(png_ptr, level);
+
+ png_set_text_compression_strategy(png_ptr,
+ strategy);
+
+ png_set_text_compression_window_bits(png_ptr,
+ window_bits);
+
+ png_set_text_compression_method(png_ptr, method);
+ #endif
+
+Controlling row filtering
+
+If you want to control whether libpng uses filtering or not, which
+filters are used, and how it goes about picking row filters, you
+can call one of these functions. The selection and configuration
+of row filters can have a significant impact on the size and
+encoding speed and a somewhat lesser impact on the decoding speed
+of an image. Filtering is enabled by default for RGB and grayscale
+images (with and without alpha), but not for paletted images nor
+for any images with bit depths less than 8 bits/pixel.
+
+The 'method' parameter sets the main filtering method, which is
+currently only '0' in the PNG 1.2 specification. The 'filters'
+parameter sets which filter(s), if any, should be used for each
+scanline. Possible values are PNG_ALL_FILTERS and PNG_NO_FILTERS
+to turn filtering on and off, respectively.
+
+Individual filter types are PNG_FILTER_NONE, PNG_FILTER_SUB,
+PNG_FILTER_UP, PNG_FILTER_AVG, PNG_FILTER_PAETH, which can be bitwise
+ORed together with '|' to specify one or more filters to use.
+These filters are described in more detail in the PNG specification.
+If you intend to change the filter type during the course of writing
+the image, you should start with flags set for all of the filters
+you intend to use so that libpng can initialize its internal
+structures appropriately for all of the filter types. (Note that this
+means the first row must always be adaptively filtered, because libpng
+currently does not allocate the filter buffers until png_write_row()
+is called for the first time.)
+
+ filters = PNG_FILTER_NONE | PNG_FILTER_SUB
+ PNG_FILTER_UP | PNG_FILTER_AVG |
+ PNG_FILTER_PAETH | PNG_ALL_FILTERS;
+
+ png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
+ filters);
+ The second parameter can also be
+ PNG_INTRAPIXEL_DIFFERENCING if you are
+ writing a PNG to be embedded in a MNG
+ datastream. This parameter must be the
+ same as the value of filter_method used
+ in png_set_IHDR().
+
+It is also possible to influence how libpng chooses from among the
+available filters. This is done in one or both of two ways - by
+telling it how important it is to keep the same filter for successive
+rows, and by telling it the relative computational costs of the filters.
+
+ double weights[3] = {1.5, 1.3, 1.1},
+ costs[PNG_FILTER_VALUE_LAST] =
+ {1.0, 1.3, 1.3, 1.5, 1.7};
+
+ png_set_filter_heuristics(png_ptr,
+ PNG_FILTER_HEURISTIC_WEIGHTED, 3,
+ weights, costs);
+
+The weights are multiplying factors that indicate to libpng that the
+row filter should be the same for successive rows unless another row filter
+is that many times better than the previous filter. In the above example,
+if the previous 3 filters were SUB, SUB, NONE, the SUB filter could have a
+"sum of absolute differences" 1.5 x 1.3 times higher than other filters
+and still be chosen, while the NONE filter could have a sum 1.1 times
+higher than other filters and still be chosen. Unspecified weights are
+taken to be 1.0, and the specified weights should probably be declining
+like those above in order to emphasize recent filters over older filters.
+
+The filter costs specify for each filter type a relative decoding cost
+to be considered when selecting row filters. This means that filters
+with higher costs are less likely to be chosen over filters with lower
+costs, unless their "sum of absolute differences" is that much smaller.
+The costs do not necessarily reflect the exact computational speeds of
+the various filters, since this would unduly influence the final image
+size.
+
+Note that the numbers above were invented purely for this example and
+are given only to help explain the function usage. Little testing has
+been done to find optimum values for either the costs or the weights.
+
+Removing unwanted object code
+
+There are a bunch of #define's in pngconf.h that control what parts of
+libpng are compiled. All the defines end in _SUPPORTED. If you are
+never going to use a capability, you can change the #define to #undef
+before recompiling libpng and save yourself code and data space, or
+you can turn off individual capabilities with defines that begin with
+PNG_NO_.
+
+In libpng-1.5.0 and later, the #define's are in pnglibconf.h instead.
+
+You can also turn all of the transforms and ancillary chunk capabilities
+off en masse with compiler directives that define
+PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS,
+or all four,
+along with directives to turn on any of the capabilities that you do
+want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the extra
+transformations but still leave the library fully capable of reading
+and writing PNG files with all known public chunks. Use of the
+PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library
+that is incapable of reading or writing ancillary chunks. If you are
+not using the progressive reading capability, you can turn that off
+with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING
+capability, which you'll still have).
+
+All the reading and writing specific code are in separate files, so the
+linker should only grab the files it needs. However, if you want to
+make sure, or if you are building a stand alone library, all the
+reading files start with "pngr" and all the writing files start with "pngw".
+The files that don't match either (like png.c, pngtrans.c, etc.)
+are used for both reading and writing, and always need to be included.
+The progressive reader is in pngpread.c
+
+If you are creating or distributing a dynamically linked library (a .so
+or DLL file), you should not remove or disable any parts of the library,
+as this will cause applications linked with different versions of the
+library to fail if they call functions not available in your library.
+The size of the library itself should not be an issue, because only
+those sections that are actually used will be loaded into memory.
+
+Requesting debug printout
+
+The macro definition PNG_DEBUG can be used to request debugging
+printout. Set it to an integer value in the range 0 to 3. Higher
+numbers result in increasing amounts of debugging information. The
+information is printed to the "stderr" file, unless another file
+name is specified in the PNG_DEBUG_FILE macro definition.
+
+When PNG_DEBUG > 0, the following functions (macros) become available:
+
+ png_debug(level, message)
+ png_debug1(level, message, p1)
+ png_debug2(level, message, p1, p2)
+
+in which "level" is compared to PNG_DEBUG to decide whether to print
+the message, "message" is the formatted string to be printed,
+and p1 and p2 are parameters that are to be embedded in the string
+according to printf-style formatting directives. For example,
+
+ png_debug1(2, "foo=%d\n", foo);
+
+is expanded to
+
+ if (PNG_DEBUG > 2)
+ fprintf(PNG_DEBUG_FILE, "foo=%d\n", foo);
+
+When PNG_DEBUG is defined but is zero, the macros aren't defined, but you
+can still use PNG_DEBUG to control your own debugging:
+
+ #ifdef PNG_DEBUG
+ fprintf(stderr, ...
+ #endif
+
+When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
+having level = 0 will be printed. There aren't any such statements in
+this version of libpng, but if you insert some they will be printed.
+
+VI. MNG support
+
+The MNG specification (available at http://www.libpng.org/pub/mng) allows
+certain extensions to PNG for PNG images that are embedded in MNG datastreams.
+Libpng can support some of these extensions. To enable them, use the
+png_permit_mng_features() function:
+
+ feature_set = png_permit_mng_features(png_ptr, mask)
+
+ mask is a png_uint_32 containing the bitwise OR of the
+ features you want to enable. These include
+ PNG_FLAG_MNG_EMPTY_PLTE
+ PNG_FLAG_MNG_FILTER_64
+ PNG_ALL_MNG_FEATURES
+
+ feature_set is a png_uint_32 that is the bitwise AND of
+ your mask with the set of MNG features that is
+ supported by the version of libpng that you are using.
+
+It is an error to use this function when reading or writing a standalone
+PNG file with the PNG 8-byte signature. The PNG datastream must be wrapped
+in a MNG datastream. As a minimum, it must have the MNG 8-byte signature
+and the MHDR and MEND chunks. Libpng does not provide support for these
+or any other MNG chunks; your application must provide its own support for
+them. You may wish to consider using libmng (available at
+http://www.libmng.com) instead.
+
+VII. Changes to Libpng from version 0.88
+
+It should be noted that versions of libpng later than 0.96 are not
+distributed by the original libpng author, Guy Schalnat, nor by
+Andreas Dilger, who had taken over from Guy during 1996 and 1997, and
+distributed versions 0.89 through 0.96, but rather by another member
+of the original PNG Group, Glenn Randers-Pehrson. Guy and Andreas are
+still alive and well, but they have moved on to other things.
+
+The old libpng functions png_read_init(), png_write_init(),
+png_info_init(), png_read_destroy(), and png_write_destroy() have been
+moved to PNG_INTERNAL in version 0.95 to discourage their use. These
+functions will be removed from libpng version 1.4.0.
+
+The preferred method of creating and initializing the libpng structures is
+via the png_create_read_struct(), png_create_write_struct(), and
+png_create_info_struct() because they isolate the size of the structures
+from the application, allow version error checking, and also allow the
+use of custom error handling routines during the initialization, which
+the old functions do not. The functions png_read_destroy() and
+png_write_destroy() do not actually free the memory that libpng
+allocated for these structs, but just reset the data structures, so they
+can be used instead of png_destroy_read_struct() and
+png_destroy_write_struct() if you feel there is too much system overhead
+allocating and freeing the png_struct for each image read.
+
+Setting the error callbacks via png_set_message_fn() before
+png_read_init() as was suggested in libpng-0.88 is no longer supported
+because this caused applications that do not use custom error functions
+to fail if the png_ptr was not initialized to zero. It is still possible
+to set the error callbacks AFTER png_read_init(), or to change them with
+png_set_error_fn(), which is essentially the same function, but with a new
+name to force compilation errors with applications that try to use the old
+method.
+
+Starting with version 1.0.7, you can find out which version of the library
+you are using at run-time:
+
+ png_uint_32 libpng_vn = png_access_version_number();
+
+The number libpng_vn is constructed from the major version, minor
+version with leading zero, and release number with leading zero,
+(e.g., libpng_vn for version 1.0.7 is 10007).
+
+Note that this function does not take a png_ptr, so you can call it
+before you've created one.
+
+You can also check which version of png.h you used when compiling your
+application:
+
+ png_uint_32 application_vn = PNG_LIBPNG_VER;
+
+VIII. Changes to Libpng from version 1.0.x to 1.2.x
+
+Support for user memory management was enabled by default. To
+accomplish this, the functions png_create_read_struct_2(),
+png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(),
+png_malloc_default(), and png_free_default() were added.
+
+Support for the iTXt chunk has been enabled by default as of
+version 1.2.41.
+
+Support for certain MNG features was enabled.
+
+Support for numbered error messages was added. However, we never got
+around to actually numbering the error messages. The function
+png_set_strip_error_numbers() was added (Note: the prototype for this
+function was inadvertently removed from png.h in PNG_NO_ASSEMBLER_CODE
+builds of libpng-1.2.15. It was restored in libpng-1.2.36).
+
+The png_malloc_warn() function was added at libpng-1.2.3. This issues
+a png_warning and returns NULL instead of aborting when it fails to
+acquire the requested memory allocation.
+
+Support for setting user limits on image width and height was enabled
+by default. The functions png_set_user_limits(), png_get_user_width_max(),
+and png_get_user_height_max() were added at libpng-1.2.6.
+
+The png_set_add_alpha() function was added at libpng-1.2.7.
+
+The function png_set_expand_gray_1_2_4_to_8() was added at libpng-1.2.9.
+Unlike png_set_gray_1_2_4_to_8(), the new function does not expand the
+tRNS chunk to alpha. The png_set_gray_1_2_4_to_8() function is
+deprecated.
+
+A number of macro definitions in support of runtime selection of
+assembler code features (especially Intel MMX code support) were
+added at libpng-1.2.0:
+
+ PNG_ASM_FLAG_MMX_SUPPORT_COMPILED
+ PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
+ PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
+ PNG_ASM_FLAG_MMX_READ_INTERLACE
+ PNG_ASM_FLAG_MMX_READ_FILTER_SUB
+ PNG_ASM_FLAG_MMX_READ_FILTER_UP
+ PNG_ASM_FLAG_MMX_READ_FILTER_AVG
+ PNG_ASM_FLAG_MMX_READ_FILTER_PAETH
+ PNG_ASM_FLAGS_INITIALIZED
+ PNG_MMX_READ_FLAGS
+ PNG_MMX_FLAGS
+ PNG_MMX_WRITE_FLAGS
+ PNG_MMX_FLAGS
+
+We added the following functions in support of runtime
+selection of assembler code features:
+
+ png_get_mmx_flagmask()
+ png_set_mmx_thresholds()
+ png_get_asm_flags()
+ png_get_mmx_bitdepth_threshold()
+ png_get_mmx_rowbytes_threshold()
+ png_set_asm_flags()
+
+We replaced all of these functions with simple stubs in libpng-1.2.20,
+when the Intel assembler code was removed due to a licensing issue.
+
+These macros are deprecated:
+
+ PNG_READ_TRANSFORMS_NOT_SUPPORTED
+ PNG_PROGRESSIVE_READ_NOT_SUPPORTED
+ PNG_NO_SEQUENTIAL_READ_SUPPORTED
+ PNG_WRITE_TRANSFORMS_NOT_SUPPORTED
+ PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
+ PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED
+
+They have been replaced, respectively, by:
+
+ PNG_NO_READ_TRANSFORMS
+ PNG_NO_PROGRESSIVE_READ
+ PNG_NO_SEQUENTIAL_READ
+ PNG_NO_WRITE_TRANSFORMS
+ PNG_NO_READ_ANCILLARY_CHUNKS
+ PNG_NO_WRITE_ANCILLARY_CHUNKS
+
+PNG_MAX_UINT was replaced with PNG_UINT_31_MAX. It has been
+deprecated since libpng-1.0.16 and libpng-1.2.6.
+
+The function
+ png_check_sig(sig, num)
+was replaced with
+ !png_sig_cmp(sig, 0, num)
+It has been deprecated since libpng-0.90.
+
+The function
+ png_set_gray_1_2_4_to_8()
+which also expands tRNS to alpha was replaced with
+ png_set_expand_gray_1_2_4_to_8()
+which does not. It has been deprecated since libpng-1.0.18 and 1.2.9.
+
+IX. Changes to Libpng from version 1.0.x/1.2.x to 1.4.x
+
+Private libpng prototypes and macro definitions were moved from
+png.h and pngconf.h into a new pngpriv.h header file.
+
+Functions png_set_benign_errors(), png_benign_error(), and
+png_chunk_benign_error() were added.
+
+Support for setting the maximum amount of memory that the application
+will allocate for reading chunks was added, as a security measure.
+The functions png_set_chunk_cache_max() and png_get_chunk_cache_max()
+were added to the library.
+
+We implemented support for I/O states by adding png_ptr member io_state
+and functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
+
+We added PNG_TRANSFORM_GRAY_TO_RGB to the available high-level
+input transforms.
+
+Checking for and reporting of errors in the IHDR chunk is more thorough.
+
+Support for global arrays was removed, to improve thread safety.
+
+Some obsolete/deprecated macros and functions have been removed.
+
+Typecasted NULL definitions such as
+ #define png_voidp_NULL (png_voidp)NULL
+were eliminated. If you used these in your application, just use
+NULL instead.
+
+The png_struct and info_struct members "trans" and "trans_values" were
+changed to "trans_alpha" and "trans_color", respectively.
+
+The obsolete, unused pnggccrd.c and pngvcrd.c files and related makefiles
+were removed.
+
+The PNG_1_0_X and PNG_1_2_X macros were eliminated.
+
+The PNG_LEGACY_SUPPORTED macro was eliminated.
+
+Many WIN32_WCE #ifdefs were removed.
+
+The functions png_read_init(info_ptr), png_write_init(info_ptr),
+png_info_init(info_ptr), png_read_destroy(), and png_write_destroy()
+have been removed. They have been deprecated since libpng-0.95.
+
+The png_permit_empty_plte() was removed. It has been deprecated
+since libpng-1.0.9. Use png_permit_mng_features() instead.
+
+We removed the obsolete stub functions png_get_mmx_flagmask(),
+png_set_mmx_thresholds(), png_get_asm_flags(),
+png_get_mmx_bitdepth_threshold(), png_get_mmx_rowbytes_threshold(),
+png_set_asm_flags(), and png_mmx_supported()
+
+We removed the obsolete png_check_sig(), png_memcpy_check(), and
+png_memset_check() functions. Instead use !png_sig_cmp(), memcpy(),
+and memset(), respectively.
+
+The function png_set_gray_1_2_4_to_8() was removed. It has been
+deprecated since libpng-1.0.18 and 1.2.9, when it was replaced with
+png_set_expand_gray_1_2_4_to_8() because the former function also
+expanded any tRNS chunk to an alpha channel.
+
+Macros for png_get_uint_16, png_get_uint_32, and png_get_int_32
+were added and are used by default instead of the corresponding
+functions. Unfortunately,
+from libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
+function) incorrectly returned a value of type png_uint_32.
+
+We changed the prototype for png_malloc() from
+ png_malloc(png_structp png_ptr, png_uint_32 size)
+to
+ png_malloc(png_structp png_ptr, png_alloc_size_t size)
+
+This also applies to the prototype for the user replacement malloc_fn().
+
+The png_calloc() function was added and is used in place of
+of "png_malloc(); memset();" except in the case in png_read_png()
+where the array consists of pointers; in this case a "for" loop is used
+after the png_malloc() to set the pointers to NULL, to give robust.
+behavior in case the application runs out of memory part-way through
+the process.
+
+We changed the prototypes of png_get_compression_buffer_size() and
+png_set_compression_buffer_size() to work with png_size_t instead of
+png_uint_32.
+
+Support for numbered error messages was removed by default, since we
+never got around to actually numbering the error messages. The function
+png_set_strip_error_numbers() was removed from the library by default.
+
+The png_zalloc() and png_zfree() functions are no longer exported.
+The png_zalloc() function no longer zeroes out the memory that it
+allocates.
+
+Support for dithering was disabled by default in libpng-1.4.0, because
+it has not been well tested and doesn't actually "dither".
+The code was not
+removed, however, and could be enabled by building libpng with
+PNG_READ_DITHER_SUPPORTED defined. In libpng-1.4.2, this support
+was reenabled, but the function was renamed png_set_quantize() to
+reflect more accurately what it actually does. At the same time,
+the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros were also renamed to
+PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS, and PNG_READ_DITHER_SUPPORTED
+was renamed to PNG_READ_QUANTIZE_SUPPORTED.
+
+We removed the trailing '.' from the warning and error messages.
+
+X. Changes to Libpng from version 1.4.x to 1.5.x
+
+From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
+function) incorrectly returned a value of type png_uint_32.
+
+A. Changes that affect users of libpng
+
+There are no substantial API changes between the non-deprecated parts of
+the 1.4.5 API and the 1.5.0 API, however the ability to directly access
+the main libpng control structures, png_struct and png_info, deprecated
+in earlier versions of libpng, has been completely removed from
+libpng 1.5.
+
+We no longer include zlib.h in png.h. Applications that need access
+to information in zlib.h will need to add the '#include "zlib.h"'
+directive. It does not matter whether it is placed prior to or after
+the '"#include png.h"' directive.
+
+We moved the png_strcpy(), png_strncpy(), png_strlen(), png_memcpy(),
+png_memcmp(), png_sprintf, and png_memcpy() macros into a private
+header file (pngpriv.h) that is not accessible to applications.
+
+In png_get_iCCP, the type of "profile" was changed from png_charpp
+to png_bytepp, and in png_set_iCCP, from png_charp to png_const_bytep.
+
+There are changes of form in png.h, including new and changed macros to
+declare parts of the API. Some API functions with arguments that are
+pointers to data not modified within the function have been corrected to
+declare these arguments with PNG_CONST.
+
+Much of the internal use of C macros to control the library build has also
+changed and some of this is visible in the exported header files, in
+particular the use of macros to control data and API elements visible
+during application compilation may require significant revision to
+application code. (It is extremely rare for an application to do this.)
+
+Any program that compiled against libpng 1.4 and did not use deprecated
+features or access internal library structures should compile and work
+against libpng 1.5, except for the change in the prototype for
+png_get_iCCP() and png_set_iCCP() API functions mentioned above.
+
+libpng 1.5.0 adds PNG_ PASS macros to help in the reading and writing of
+interlaced images. The macros return the number of rows and columns in
+each pass and information that can be used to de-interlace and (if
+absolutely necessary) interlace an image.
+
+libpng 1.5.0 adds an API png_longjmp(png_ptr, value). This API calls
+the application-provided png_longjmp_ptr on the internal, but application
+initialized, longjmp buffer. It is provided as a convenience to avoid
+the need to use the png_jmpbuf macro, which had the unnecessary side
+effect of resetting the internal png_longjmp_ptr value.
+
+libpng 1.5.0 includes a complete fixed point API. By default this is
+present along with the corresponding floating point API. In general the
+fixed point API is faster and smaller than the floating point one because
+the PNG file format used fixed point, not floating point. This applies
+even if the library uses floating point in internal calculations. A new
+macro, PNG_FLOATING_ARITHMETIC_SUPPORTED, reveals whether the library
+uses floating point arithmetic (the default) or fixed point arithmetic
+internally for performance critical calculations such as gamma correction.
+In some cases, the gamma calculations may produce slightly different
+results. This has changed the results in png_rgb_to_gray and in alpha
+composition (png_set_background for example). This applies even if the
+original image was already linear (gamma == 1.0) and, therefore, it is
+not necessary to linearize the image. This is because libpng has *not*
+been changed to optimize that case correctly, yet.
+
+Fixed point support for the sCAL chunk comes with an important caveat;
+the sCAL specification uses a decimal encoding of floating point values
+and the accuracy of PNG fixed point values is insufficient for
+representation of these values. Consequently a "string" API
+(png_get_sCAL_s and png_set_sCAL_s) is the only reliable way of reading
+arbitrary sCAL chunks in the absence of either the floating point API or
+internal floating point calculations.
+
+Applications no longer need to include the optional distribution header
+file pngusr.h or define the corresponding macros during application
+build in order to see the correct variant of the libpng API. From 1.5.0
+application code can check for the corresponding _SUPPORTED macro:
+
+#ifdef PNG_INCH_CONVERSIONS_SUPPORTED
+ /* code that uses the inch conversion APIs. */
+#endif
+
+This macro will only be defined if the inch conversion functions have been
+compiled into libpng. The full set of macros, and whether or not support
+has been compiled in, are available in the header file pnglibconf.h.
+This header file is specific to the libpng build. Notice that prior to
+1.5.0 the _SUPPORTED macros would always have the default definition unless
+reset by pngusr.h or by explicit settings on the compiler command line.
+These settings may produce compiler warnings or errors in 1.5.0 because
+of macro redefinition.
+
+From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
+function) incorrectly returned a value of type png_uint_32. libpng 1.5.0
+is consistent with the implementation in 1.4.5 and 1.2.x (where the macro
+did not exist.)
+
+Applications can now choose whether to use these macros or to call the
+corresponding function by defining PNG_USE_READ_MACROS or
+PNG_NO_USE_READ_MACROS before including png.h. Notice that this is
+only supported from 1.5.0 -defining PNG_NO_USE_READ_MACROS prior to 1.5.0
+will lead to a link failure.
+
+Prior to libpng-1.5.4, the zlib compressor used the same set of parameters
+when compressing the IDAT data and textual data such as zTXt and iCCP.
+In libpng-1.5.4 we reinitialized the zlib stream for each type of data.
+We added five png_set_text_*() functions for setting the parameters to
+use with textual data.
+
+Prior to libpng-1.5.4, the PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+option was off by default, and slightly inaccurate scaling occurred.
+This option can no longer be turned off, and the choice of accurate
+or inaccurate 16-to-8 scaling is by using the new png_set_scale_16_to_8()
+API for accurate scaling or the old png_set_strip_16_to_8() API for simple
+chopping.
+
+Prior to libpng-1.5.4, the png_set_user_limits() function could only be
+used to reduce the width and height limits from the value of
+PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
+that it could be used to override them. Now this function will reduce or
+increase the limits.
+
+B. Changes to the build and configuration of libpng
+
+Details of internal changes to the library code can be found in the CHANGES
+file and in the GIT repository logs. These will be of no concern to the vast
+majority of library users or builders, however the few who configure libpng
+to a non-default feature set may need to change how this is done.
+
+There should be no need for library builders to alter build scripts if
+these use the distributed build support - configure or the makefiles -
+however users of the makefiles may care to update their build scripts
+to build pnglibconf.h where the corresponding makefile does not do so.
+
+Building libpng with a non-default configuration has changed completely.
+The old method using pngusr.h should still work correctly even though the
+way pngusr.h is used in the build has been changed; however, library
+builders will probably want to examine the changes to take advantage of
+new capabilities and to simplify their build system.
+
+B.1 Specific changes to library configuration capabilities
+
+The library now supports a complete fixed point implementation and can
+thus be used on systems that have no floating point support or very
+limited or slow support. Previously gamma correction, an essential part
+of complete PNG support, required reasonably fast floating point.
+
+As part of this the choice of internal implementation has been made
+independent of the choice of fixed versus floating point APIs and all the
+missing fixed point APIs have been implemented.
+
+The exact mechanism used to control attributes of API functions has
+changed. A single set of operating system independent macro definitions
+is used and operating system specific directives are defined in
+pnglibconf.h
+
+As part of this the mechanism used to choose procedure call standards on
+those systems that allow a choice has been changed. At present this only
+affects certain Microsoft (DOS, Windows) and IBM (OS/2) operating systems
+running on Intel processors. As before, PNGAPI is defined where required
+to control the exported API functions; however, two new macros, PNGCBAPI
+and PNGCAPI, are used instead for callback functions (PNGCBAPI) and
+(PNGCAPI) for functions that must match a C library prototype (currently
+only png_longjmp_ptr, which must match the C longjmp function.) The new
+approach is documented in pngconf.h
+
+Despite these changes, libpng 1.5.0 only supports the native C function
+calling standard on those platforms tested so far (__cdecl on Microsoft
+Windows). This is because the support requirements for alternative
+calling conventions seem to no longer exist. Developers who find it
+necessary to set PNG_API_RULE to 1 should advise the mailing list
+(png-mng-implement) of this and library builders who use Openwatcom and
+therefore set PNG_API_RULE to 2 should also contact the mailing list.
+
+A new test program, pngvalid, is provided in addition to pngtest.
+pngvalid validates the arithmetic accuracy of the gamma correction
+calculations and includes a number of validations of the file format.
+A subset of the full range of tests is run when "make check" is done
+(in the 'configure' build.) pngvalid also allows total allocated memory
+usage to be evaluated and performs additional memory overwrite validation.
+
+Many changes to individual feature macros have been made. The following
+are the changes most likely to be noticed by library builders who
+configure libpng:
+
+1) All feature macros now have consistent naming:
+
+#define PNG_NO_feature turns the feature off
+#define PNG_feature_SUPPORTED turns the feature on
+
+pnglibconf.h contains one line for each feature macro which is either:
+
+#define PNG_feature_SUPPORTED
+
+if the feature is supported or:
+
+/*#undef PNG_feature_SUPPORTED*/
+
+if it is not. Library code consistently checks for the 'SUPPORTED' macro.
+It does not, and libpng applications should not, check for the 'NO' macro
+which will not normally be defined even if the feature is not supported.
+The 'NO' macros are only used internally for setting or not setting the
+corresponding 'SUPPORTED' macros.
+
+Compatibility with the old names is provided as follows:
+
+PNG_INCH_CONVERSIONS turns on PNG_INCH_CONVERSIONS_SUPPORTED
+
+And the following definitions disable the corresponding feature:
+
+PNG_SETJMP_NOT_SUPPORTED disables SETJMP
+PNG_READ_TRANSFORMS_NOT_SUPPORTED disables READ_TRANSFORMS
+PNG_NO_READ_COMPOSITED_NODIV disables READ_COMPOSITE_NODIV
+PNG_WRITE_TRANSFORMS_NOT_SUPPORTED disables WRITE_TRANSFORMS
+PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED disables READ_ANCILLARY_CHUNKS
+PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED disables WRITE_ANCILLARY_CHUNKS
+
+Library builders should remove use of the above, inconsistent, names.
+
+2) Warning and error message formatting was previously conditional on
+the STDIO feature. The library has been changed to use the
+CONSOLE_IO feature instead. This means that if CONSOLE_IO is disabled
+the library no longer uses the printf(3) functions, even though the
+default read/write implementations use (FILE) style stdio.h functions.
+
+3) Three feature macros now control the fixed/floating point decisions:
+
+PNG_FLOATING_POINT_SUPPORTED enables the floating point APIs
+
+PNG_FIXED_POINT_SUPPORTED enables the fixed point APIs; however, in
+practice these are normally required internally anyway (because the PNG
+file format is fixed point), therefore in most cases PNG_NO_FIXED_POINT
+merely stops the function from being exported.
+
+PNG_FLOATING_ARITHMETIC_SUPPORTED chooses between the internal floating
+point implementation or the fixed point one. Typically the fixed point
+implementation is larger and slower than the floating point implementation
+on a system that supports floating point, however it may be faster on a
+system which lacks floating point hardware and therefore uses a software
+emulation.
+
+4) Added PNG_{READ,WRITE}_INT_FUNCTIONS_SUPPORTED. This allows the
+functions to read and write ints to be disabled independently of
+PNG_USE_READ_MACROS, which allows libpng to be built with the functions
+even though the default is to use the macros - this allows applications
+to choose at app buildtime whether or not to use macros (previously
+impossible because the functions weren't in the default build.)
+
+B.2 Changes to the configuration mechanism
+
+Prior to libpng-1.5.0 library builders who needed to configure libpng
+had either to modify the exported pngconf.h header file to add system
+specific configuration or had to write feature selection macros into
+pngusr.h and cause this to be included into pngconf.h by defining
+PNG_USER_CONFIG. The latter mechanism had the disadvantage that an
+application built without PNG_USER_CONFIG defined would see the
+unmodified, default, libpng API and thus would probably fail to link.
+
+These mechanisms still work in the configure build and in any makefile
+build that builds pnglibconf.h, although the feature selection macros
+have changed somewhat as described above. In 1.5.0, however, pngusr.h is
+processed only once, when the exported header file pnglibconf.h is built.
+pngconf.h no longer includes pngusr.h, therefore pngusr.h is ignored after the
+build of pnglibconf.h and it is never included in an application build.
+
+The rarely used alternative of adding a list of feature macros to the
+CFLAGS setting in the build also still works, however the macros will be
+copied to pnglibconf.h and this may produce macro redefinition warnings
+when the individual C files are compiled.
+
+All configuration now only works if pnglibconf.h is built from
+scripts/pnglibconf.dfa. This requires the program awk. Brian Kernighan
+(the original author of awk) maintains C source code of that awk and this
+and all known later implementations (often called by subtly different
+names - nawk and gawk for example) are adequate to build pnglibconf.h.
+The Sun Microsystems (now Oracle) program 'awk' is an earlier version
+and does not work; this may also apply to other systems that have a
+functioning awk called 'nawk'.
+
+Configuration options are now documented in scripts/pnglibconf.dfa. This
+file also includes dependency information that ensures a configuration is
+consistent; that is, if a feature is switched off dependent features are
+also removed. As a recommended alternative to using feature macros in
+pngusr.h a system builder may also define equivalent options in pngusr.dfa
+(or, indeed, any file) and add that to the configuration by setting
+DFA_XTRA to the file name. The makefiles in contrib/pngminim illustrate
+how to do this, and a case where pngusr.h is still required.
+
+XI. Detecting libpng
+
+The png_get_io_ptr() function has been present since libpng-0.88, has never
+changed, and is unaffected by conditional compilation macros. It is the
+best choice for use in configure scripts for detecting the presence of any
+libpng version since 0.88. In an autoconf "configure.in" you could use
+
+ AC_CHECK_LIB(png, png_get_io_ptr, ...
+
+XII. Source code repository
+
+Since about February 2009, version 1.2.34, libpng has been under "git" source
+control. The git repository was built from old libpng-x.y.z.tar.gz files
+going back to version 0.70. You can access the git repository (read only)
+at
+
+ git://libpng.git.sourceforge.net/gitroot/libpng
+
+or you can browse it via "gitweb" at
+
+ http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng
+
+Patches can be sent to glennrp at users.sourceforge.net or to
+png-mng-implement at lists.sourceforge.net or you can upload them to
+the libpng bug tracker at
+
+ http://libpng.sourceforge.net
+
+We also accept patches built from the tar or zip distributions, and
+simple verbal discriptions of bug fixes, reported either to the
+SourceForge bug tracker, to the png-mng-implement at lists.sf.net
+mailing list, or directly to glennrp.
+
+XIII. Coding style
+
+Our coding style is similar to the "Allman" style, with curly
+braces on separate lines:
+
+ if (condition)
+ {
+ action;
+ }
+
+ else if (another condition)
+ {
+ another action;
+ }
+
+The braces can be omitted from simple one-line actions:
+
+ if (condition)
+ return (0);
+
+We use 3-space indentation, except for continued statements which
+are usually indented the same as the first line of the statement
+plus four more spaces.
+
+For macro definitions we use 2-space indentation, always leaving the "#"
+in the first column.
+
+ #ifndef PNG_NO_FEATURE
+ # ifndef PNG_FEATURE_SUPPORTED
+ # define PNG_FEATURE_SUPPORTED
+ # endif
+ #endif
+
+Comments appear with the leading "/*" at the same indentation as
+the statement that follows the comment:
+
+ /* Single-line comment */
+ statement;
+
+ /* This is a multiple-line
+ * comment.
+ */
+ statement;
+
+Very short comments can be placed after the end of the statement
+to which they pertain:
+
+ statement; /* comment */
+
+We don't use C++ style ("//") comments. We have, however,
+used them in the past in some now-abandoned MMX assembler
+code.
+
+Functions and their curly braces are not indented, and
+exported functions are marked with PNGAPI:
+
+ /* This is a public function that is visible to
+ * application programmers. It does thus-and-so.
+ */
+ void PNGAPI
+ png_exported_function(png_ptr, png_info, foo)
+ {
+ body;
+ }
+
+The prototypes for all exported functions appear in png.h,
+above the comment that says
+
+ /* Maintainer: Put new public prototypes here ... */
+
+We mark all non-exported functions with "/* PRIVATE */"":
+
+ void /* PRIVATE */
+ png_non_exported_function(png_ptr, png_info, foo)
+ {
+ body;
+ }
+
+The prototypes for non-exported functions (except for those in
+pngtest) appear in
+pngpriv.h
+above the comment that says
+
+ /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
+
+To avoid polluting the global namespace, the names of all exported
+functions and variables begin with "png_", and all publicly visible C
+preprocessor macros begin with "PNG_". We request that applications that
+use libpng *not* begin any of their own symbols with either of these strings.
+
+We put a space after each comma and after each semicolon
+in "for" statements, and we put spaces before and after each
+C binary operator and after "for" or "while", and before
+"?". We don't put a space between a typecast and the expression
+being cast, nor do we put one between a function name and the
+left parenthesis that follows it:
+
+ for (i = 2; i > 0; --i)
+ y[i] = a(x) + (int)b;
+
+We prefer #ifdef and #ifndef to #if defined() and if !defined()
+when there is only one macro being tested.
+
+We prefer to express integers that are used as bit masks in hex format,
+with an even number of lower-case hex digits (e.g., 0x00, 0xff, 0x0100).
+
+We do not use the TAB character for indentation in the C sources.
+
+Lines do not exceed 80 characters.
+
+Other rules can be inferred by inspecting the libpng source.
+
+XIV. Y2K Compliance in libpng
+
+February 19, 2012
+
+Since the PNG Development group is an ad-hoc body, we can't make
+an official declaration.
+
+This is your unofficial assurance that libpng from version 0.71 and
+upward through 1.5.10beta01 are Y2K compliant. It is my belief that earlier
+versions were also Y2K compliant.
+
+Libpng only has three year fields. One is a 2-byte unsigned integer that
+will hold years up to 65535. The other two hold the date in text
+format, and will hold years up to 9999.
+
+The integer is
+ "png_uint_16 year" in png_time_struct.
+
+The strings are
+ "png_charp time_buffer" in png_struct and
+ "near_time_buffer", which is a local character string in png.c.
+
+There are seven time-related functions:
+
+ png_convert_to_rfc_1123() in png.c
+ (formerly png_convert_to_rfc_1152() in error)
+ png_convert_from_struct_tm() in pngwrite.c, called
+ in pngwrite.c
+ png_convert_from_time_t() in pngwrite.c
+ png_get_tIME() in pngget.c
+ png_handle_tIME() in pngrutil.c, called in pngread.c
+ png_set_tIME() in pngset.c
+ png_write_tIME() in pngwutil.c, called in pngwrite.c
+
+All appear to handle dates properly in a Y2K environment. The
+png_convert_from_time_t() function calls gmtime() to convert from system
+clock time, which returns (year - 1900), which we properly convert to
+the full 4-digit year. There is a possibility that applications using
+libpng are not passing 4-digit years into the png_convert_to_rfc_1123()
+function, or that they are incorrectly passing only a 2-digit year
+instead of "year - 1900" into the png_convert_from_struct_tm() function,
+but this is not under our control. The libpng documentation has always
+stated that it works with 4-digit years, and the APIs have been
+documented as such.
+
+The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned
+integer to hold the year, and can hold years as large as 65535.
+
+zlib, upon which libpng depends, is also Y2K compliant. It contains
+no date-related code.
+
+
+ Glenn Randers-Pehrson
+ libpng maintainer
+ PNG Development Group
diff --git a/libpng.3 b/libpng.3
index 86ca620..7faba8a 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "July 13, 2011"
+.TH LIBPNG 3 "February 19, 2012"
.SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.4.9beta01
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.10beta01
.SH SYNOPSIS
\fI\fB
@@ -12,7 +12,7 @@
\fI\fB
-\fBvoid png_benign_errors (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
+\fBvoid png_benign_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
\fI\fB
@@ -128,10 +128,22 @@
\fI\fB
-\fBpng_uint_32 png_get_chunk_cache_max (png_const_structp \fIpng_ptr\fP\fB);\fP
+\fBpng_uint_32 png_get_cHRM_XYZ (png_structp \fIpng_ptr,
+
+\fBpng_const_infop \fP\fIinfo_ptr\fP\fB, double \fP\fI*red_X\fP\fB, double \fP\fI*red_Y\fP\fB, double \fI*red_Z,
+
+\fBdouble \fP\fI*green_X\fP\fB, double \fP\fI*green_Y\fP\fB, double \fP\fI*green_Z\fP\fB, double \fI*blue_X,
+
+\fBdouble \fP\fI*blue_Y\fP\fB, double \fI*blue_Z\fP\fB);\fP
\fI\fB
+\fBpng_uint_32 png_get_cHRM_XYZ_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_fixed_point \fP\fI*int_red_X\fP\fB, png_fixed_point \fP\fI*int_red_Y\fP\fB, png_fixed_point \fP\fI*int_red_Z\fP\fB, png_fixed_point \fP\fI*int_green_X\fP\fB, png_fixed_point \fP\fI*int_green_Y\fP\fB, png_fixed_point \fP\fI*int_green_Z\fP\fB, png_fixed_point \fP\fI*int_blue_X\fP\fB, png_fixed_point \fP\fI*int_blue_Y\fP\fB, png_fixed_point \fI*int_blue_Z\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_chunk_cache_max (png_const_structp \fIpng_ptr\fP\fB);\fP
+
\fI\fB
\fBpng_alloc_size_t png_get_chunk_malloc_max (png_const_structp \fIpng_ptr\fP\fB);\fP
@@ -154,6 +166,14 @@
\fI\fB
+\fBpng_uint_32 png_get_current_row_number \fI(png_const_structp\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_current_pass_number \fI(png_const_structp\fP\fB);\fP
+
+\fI\fB
+
\fBpng_voidp png_get_error_ptr (png_const_structp \fIpng_ptr\fP\fB);\fP
\fI\fB
@@ -210,6 +230,10 @@
\fI\fB
+\fBpng_uint_32 png_get_io_chunk_type (png_const_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
\fBpng_voidp png_get_io_ptr (png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB
@@ -300,7 +324,7 @@
\fI\fB
-\fBpng_uint_32 png_get_sRGB (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, int \fI*intent\fP\fB);\fP
+\fBpng_uint_32 png_get_sRGB (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, int \fI*file_srgb_intent\fP\fB);\fP
\fI\fB
@@ -416,6 +440,10 @@
\fI\fB
+\fBvoid png_longjmp (png_structp \fP\fIpng_ptr\fP\fB, int \fIval\fP\fB);\fP
+
+\fI\fB
+
\fBpng_voidp png_malloc (png_structp \fP\fIpng_ptr\fP\fB, png_alloc_size_t \fIsize\fP\fB);\fP
\fI\fB
@@ -436,6 +464,14 @@
\fI\fB
+\fBpng_size_t png_process_data_pause \fP\fI(png_structp\fP\fB, int \fIsave\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_process_data_skip \fI(png_structp\fP\fB);\fP
+
+\fI\fB
+
\fBvoid png_progressive_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIold_row\fP\fB, png_bytep \fInew_row\fP\fB);\fP
\fI\fB
@@ -488,6 +524,14 @@
\fI\fB
+\fBvoid png_set_alpha_mode (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fImode\fP\fB, double \fIoutput_gamma\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_alpha_mode_fixed (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fImode\fP\fB, png_fixed_point \fIoutput_gamma\fP\fB);\fP
+
+\fI\fB
+
\fBvoid png_set_background (png_structp \fP\fIpng_ptr\fP\fB, png_color_16p \fP\fIbackground_color\fP\fB, int \fP\fIbackground_gamma_code\fP\fB, int \fP\fIneed_expand\fP\fB, double \fIbackground_gamma\fP\fB);\fP
\fI\fB
@@ -516,6 +560,16 @@
\fI\fB
+\fBvoid png_set_cHRM_XYZ (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fIred_X\fP\fB, double \fP\fIred_Y\fP\fB, double \fP\fIred_Z\fP\fB, double \fP\fIgreen_X\fP\fB, double \fIgreen_Y,
+
+\fBdouble \fP\fIgreen_Z\fP\fB, double \fP\fIblue_X\fP\fB, double \fP\fIblue_Y\fP\fB, double \fIblue_Z\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_cHRM_XYZ_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_fixed_point \fP\fIint_red_X\fP\fB, png_fixed_point \fP\fIint_red_Y\fP\fB, png_fixed_point \fP\fIint_red_Z\fP\fB, png_fixed_point \fP\fIint_green_X\fP\fB, png_fixed_point \fP\fIint_green_Y\fP\fB, png_fixed_point \fP\fIint_green_Z\fP\fB, png_fixed_point \fP\fIint_blue_X\fP\fB, png_fixed_point \fP\fIint_blue_Y\fP\fB, png_fixed_point \fIint_blue_Z\fP\fB);\fP
+
+\fI\fB
+
\fBvoid png_set_chunk_cache_max (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIuser_chunk_cache_max\fP\fB);\fP
\fI\fB
@@ -552,6 +606,10 @@
\fI\fB
+\fBvoid png_set_expand_16 (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
\fBvoid png_set_expand_gray_1_2_4_to_8 (png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB
@@ -728,6 +786,10 @@
\fI\fB
+\fBvoid png_set_scale_16 (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
\fBvoid png_set_shift (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fItrue_bits\fP\fB);\fP
\fI\fB
@@ -740,11 +802,11 @@
\fI\fB
-\fBvoid png_set_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIintent\fP\fB);\fP
+\fBvoid png_set_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIsrgb_intent\fP\fB);\fP
\fI\fB
-\fBvoid png_set_sRGB_gAMA_and_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIintent\fP\fB);\fP
+\fBvoid png_set_sRGB_gAMA_and_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIsrgb_intent\fP\fB);\fP
\fI\fB
@@ -772,6 +834,26 @@
\fI\fB
+\fBvoid png_set_text_compression_level (png_structp \fP\fIpng_ptr\fP\fB, int \fIlevel\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_text_compression_mem_level (png_structp \fP\fIpng_ptr\fP\fB, int \fImem_level\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_text_compression_strategy (png_structp \fP\fIpng_ptr\fP\fB, int \fIstrategy\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_text_compression_window_bits (png_structp \fP\fIpng_ptr\fP\fB, int \fIwindow_bits\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid \fP\fIpng_set_text_compression_method\fP\fB, (png_structp \fP\fIpng_ptr\fP\fB, int \fImethod)\fP\fB);\fP
+
+\fI\fB
+
\fBvoid png_set_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP
\fI\fB
@@ -893,12 +975,12 @@
compression library.
Following is a copy of the libpng-manual.txt file that accompanies libpng.
.SH LIBPNG.TXT
-libpng.txt - A description on how to use and modify libpng
+libpng-manual.txt - A description on how to use and modify libpng
- libpng version 1.4.9beta01 - July 13, 2011
+ libpng version 1.5.10beta01 - February 19, 2012
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
- Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ Copyright (c) 1998-2011 Glenn Randers-Pehrson
This document is released under the libpng license.
For conditions of distribution and use, see the disclaimer
@@ -906,9 +988,9 @@
Based on:
- libpng versions 0.97, January 1998, through 1.4.9beta01 - July 13, 2011
+ libpng versions 0.97, January 1998, through 1.5.10beta01 - February 19, 2012
Updated and distributed by Glenn Randers-Pehrson
- Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ Copyright (c) 1998-2011 Glenn Randers-Pehrson
libpng 1.0 beta 6 version 0.96 May 28, 1997
Updated and distributed by Andreas Dilger
@@ -994,34 +1076,203 @@
.SH II. Structures
There are two main structures that are important to libpng, png_struct
-and png_info. The first, png_struct, is an internal structure that
-will not, for the most part, be used by a user except as the first
-variable passed to every libpng function call.
+and png_info. Both are internal structures that are no longer exposed
+in the libpng interface (as of libpng 1.5.0).
The png_info structure is designed to provide information about the
PNG file. At one time, the fields of png_info were intended to be
directly accessible to the user. However, this tended to cause problems
with applications using dynamically loaded libraries, and as a result
a set of interface functions for png_info (the png_get_*() and png_set_*()
-functions) was developed. The fields of png_info are still available for
-older applications, but it is suggested that applications use the new
-interfaces if at all possible.
+functions) was developed, and direct access to the png_info fields was
+deprecated..
-Applications that do make direct access to the members of png_struct (except
-for png_ptr->jmpbuf) must be recompiled whenever the library is updated,
-and applications that make direct access to the members of png_info must
-be recompiled if they were compiled or loaded with libpng version 1.0.6,
-in which the members were in a different order. In version 1.0.7, the
-members of the png_info structure reverted to the old order, as they were
-in versions 0.97c through 1.0.5. Starting with version 2.0.0, both
-structures are going to be hidden, and the contents of the structures will
-only be accessible through the png_get/png_set functions.
+The png_struct structure is the object used by the library to decode a
+single image. As of 1.5.0 this structure is also not exposed.
+
+Almost all libpng APIs require a pointer to a png_struct as the first argument.
+Many (in particular the png_set and png_get APIs) also require a pointer
+to png_info as the second argument. Some application visible macros
+defined in png.h designed for basic data access (reading and writing
+integers in the PNG format) don't take a png_info pointer, but it's almost
+always safe to assume that a (png_struct*) has to be passed to call an API
+function.
+
+You can have more than one png_info structure associated with an image,
+as illustrated in pngtest.c, one for information valid prior to the
+IDAT chunks and another (called "end_info" below) for things after them.
The png.h header file is an invaluable reference for programming with libpng.
And while I'm on the topic, make sure you include the libpng header file:
#include <png.h>
+and also (as of libpng-1.5.0) the zlib header file, if you need it:
+
+#include <zlib.h>
+
+.SS Types
+
+The png.h header file defines a number of integral types used by the
+APIs. Most of these are fairly obvious; for example types corresponding
+to integers of particular sizes and types for passing color values.
+
+One exception is how non-integral numbers are handled. For application
+convenience most APIs that take such numbers have C (double) arguments,
+however internally PNG, and libpng, use 32 bit signed integers and encode
+the value by multiplying by 100,000. As of libpng 1.5.0 a convenience
+macro PNG_FP_1 is defined in png.h along with a type (png_fixed_point)
+which is simply (png_int_32).
+
+All APIs that take (double) arguments also have a matching API that
+takes the corresponding fixed point integer arguments. The fixed point
+API has the same name as the floating point one with "_fixed" appended.
+The actual range of values permitted in the APIs is frequently less than
+the full range of (png_fixed_point) (-21474 to +21474). When APIs require
+a non-negative argument the type is recorded as png_uint_32 above. Consult
+the header file and the text below for more information.
+
+Special care must be take with sCAL chunk handling because the chunk itself
+uses non-integral values encoded as strings containing decimal floating point
+numbers. See the comments in the header file.
+
+.SS Configuration
+
+The main header file function declarations are frequently protected by C
+preprocessing directives of the form:
+
+ #ifdef PNG_feature_SUPPORTED
+ declare-function
+ #endif
+ ...
+ #ifdef PNG_feature_SUPPORTED
+ use-function
+ #endif
+
+The library can be built without support for these APIs, although a
+standard build will have all implemented APIs. Application programs
+should check the feature macros before using an API for maximum
+portability. From libpng 1.5.0 the feature macros set during the build
+of libpng are recorded in the header file "pnglibconf.h" and this file
+is always included by png.h.
+
+If you don't need to change the library configuration from the default, skip to
+the next section ("Reading").
+
+Notice that some of the makefiles in the 'scripts' directory and (in 1.5.0) all
+of the build project files in the 'projects' directory simply copy
+scripts/pnglibconf.h.prebuilt to pnglibconf.h. This means that these build
+systems do not permit easy auto-configuration of the library - they only
+support the default configuration.
+
+The easiest way to make minor changes to the libpng configuration when
+auto-configuration is supported is to add definitions to the command line
+using (typically) CPPFLAGS. For example:
+
+CPPFLAGS=-DPNG_NO_FLOATING_ARITHMETIC
+
+will change the internal libpng math implementation for gamma correction and
+other arithmetic calculations to fixed point, avoiding the need for fast
+floating point support. The result can be seen in the generated pnglibconf.h -
+make sure it contains the changed feature macro setting.
+
+If you need to make more extensive configuration changes - more than one or two
+feature macro settings - you can either add -DPNG_USER_CONFIG to the build
+command line and put a list of feature macro settings in pngusr.h or you can set
+DFA_XTRA (a makefile variable) to a file containing the same information in the
+form of 'option' settings.
+
+A. Changing pnglibconf.h
+
+A variety of methods exist to build libpng. Not all of these support
+reconfiguration of pnglibconf.h. To reconfigure pnglibconf.h it must either be
+rebuilt from scripts/pnglibconf.dfa using awk or it must be edited by hand.
+
+Hand editing is achieved by copying scripts/pnglibconf.h.prebuilt to
+pnglibconf.h and changing the lines defining the supported features, paying
+very close attention to the 'option' information in scripts/pnglibconf.dfa
+that describes those features and their requirements. This is easy to get
+wrong.
+
+B. Configuration using DFA_XTRA
+
+Rebuilding from pnglibconf.dfa is easy if a functioning 'awk', or a later
+variant such as 'nawk' or 'gawk', is available. The configure build will
+automatically find an appropriate awk and build pnglibconf.h.
+The scripts/pnglibconf.mak file contains a set of make rules for doing the
+same thing if configure is not used, and many of the makefiles in the scripts
+directory use this approach.
+
+When rebuilding simply write a new file containing changed options and set
+DFA_XTRA to the name of this file. This causes the build to append the new file
+to the end of scripts/pnglibconf.dfa. The pngusr.dfa file should contain lines
+of the following forms:
+
+everything = off
+
+This turns all optional features off. Include it at the start of pngusr.dfa to
+make it easier to build a minimal configuration. You will need to turn at least
+some features on afterward to enable either reading or writing code, or both.
+
+option feature on
+option feature off
+
+Enable or disable a single feature. This will automatically enable other
+features required by a feature that is turned on or disable other features that
+require a feature which is turned off. Conflicting settings will cause an error
+message to be emitted by awk.
+
+setting feature default value
+
+Changes the default value of setting 'feature' to 'value'. There are a small
+number of settings listed at the top of pnglibconf.h, they are documented in the
+source code. Most of these values have performance implications for the library
+but most of them have no visible effect on the API. Some can also be overridden
+from the API.
+
+This method of building a customized pnglibconf.h is illustrated in
+contrib/pngminim/*. See the "$(PNGCONF):" target in the makefile and
+pngusr.dfa in these directories.
+
+C. Configuration using PNG_USR_CONFIG
+
+If -DPNG_USR_CONFIG is added to the CFLAGS when pnglibconf.h is built the file
+pngusr.h will automatically be included before the options in
+scripts/pnglibconf.dfa are processed. Your pngusr.h file should contain only
+macro definitions turning features on or off or setting settings.
+
+Apart from the global setting "everything = off" all the options listed above
+can be set using macros in pngusr.h:
+
+#define PNG_feature_SUPPORTED
+
+is equivalent to:
+
+option feature on
+
+#define PNG_NO_feature
+
+is equivalent to:
+
+option feature off
+
+#define PNG_feature value
+
+is equivalent to:
+
+setting feature default value
+
+Notice that in both cases, pngusr.dfa and pngusr.h, the contents of the
+pngusr file you supply override the contents of scripts/pnglibconf.dfa
+
+If confusing or incomprehensible behavior results it is possible to
+examine the intermediate file pnglibconf.dfn to find the full set of
+dependency information for each setting and option. Simply locate the
+feature in the file and read the C comments that precede it.
+
+This method is also illustrated in the contrib/pngminim/* makefiles and
+pngusr.h.
+
.SH III. Reading
We'll now walk you through the possible functions to call when reading
@@ -1057,13 +1308,15 @@
FILE *fp = fopen(file_name, "rb");
if (!fp)
{
- return (ERROR);
+ return (ERROR);
}
+
fread(header, 1, number, fp);
is_png = !png_sig_cmp(header, 0, number);
+
if (!is_png)
{
- return (NOT_PNG);
+ return (NOT_PNG);
}
@@ -1079,33 +1332,27 @@
create the structure, so your application should check for that.
png_structp png_ptr = png_create_read_struct
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
user_error_fn, user_warning_fn);
+
if (!png_ptr)
- return (ERROR);
+ return (ERROR);
png_infop info_ptr = png_create_info_struct(png_ptr);
+
if (!info_ptr)
{
- png_destroy_read_struct(&png_ptr,
+ png_destroy_read_struct(&png_ptr,
(png_infopp)NULL, (png_infopp)NULL);
- return (ERROR);
- }
-
- png_infop end_info = png_create_info_struct(png_ptr);
- if (!end_info)
- {
- png_destroy_read_struct(&png_ptr, &info_ptr,
- (png_infopp)NULL);
- return (ERROR);
+ return (ERROR);
}
If you want to use your own memory allocation routines,
-define PNG_USER_MEM_SUPPORTED and use
+use a libpng that was built with PNG_USER_MEM_SUPPORTED defined, and use
png_create_read_struct_2() instead of png_create_read_struct():
png_structp png_ptr = png_create_read_struct_2
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
user_error_fn, user_warning_fn, (png_voidp)
user_mem_ptr, user_malloc_fn, user_free_fn);
@@ -1117,7 +1364,7 @@
When libpng encounters an error, it expects to longjmp back
to your routine. Therefore, you will need to call setjmp and pass
your png_jmpbuf(png_ptr). If you read the file from different
-routines, you will need to update the jmpbuf field every time you enter
+routines, you will need to update the longjmp buffer every time you enter
a new routine that will call a png_*() function.
See your documentation of setjmp/longjmp for your compiler for more
@@ -1129,12 +1376,15 @@
if (setjmp(png_jmpbuf(png_ptr)))
{
- png_destroy_read_struct(&png_ptr, &info_ptr,
+ png_destroy_read_struct(&png_ptr, &info_ptr,
&end_info);
- fclose(fp);
- return (ERROR);
+ fclose(fp);
+ return (ERROR);
}
+Pass (png_infopp)NULL instead of &end_info if you didn't create
+an end_info structure.
+
If you would rather avoid the complexity of setjmp/longjmp issues,
you can compile libpng with PNG_NO_SETJMP, in which case
errors will result in a call to PNG_ABORT() which defaults to abort().
@@ -1168,6 +1418,31 @@
is changed immediately and the buffer is reallocated immediately,
instead of setting a flag to be acted upon later.
+If you want CRC errors to be handled in a different manner than
+the default, use
+
+ png_set_crc_action(png_ptr, crit_action, ancil_action);
+
+The values for png_set_crc_action() say how libpng is to handle CRC errors in
+ancillary and critical chunks, and whether to use the data contained
+therein. Note that it is impossible to "discard" data in a critical
+chunk.
+
+Choices for (int) crit_action are
+ PNG_CRC_DEFAULT 0 error/quit
+ PNG_CRC_ERROR_QUIT 1 error/quit
+ PNG_CRC_WARN_USE 3 warn/use data
+ PNG_CRC_QUIET_USE 4 quiet/use data
+ PNG_CRC_NO_CHANGE 5 use the current value
+
+Choices for (int) ancil_action are
+ PNG_CRC_DEFAULT 0 error/quit
+ PNG_CRC_ERROR_QUIT 1 error/quit
+ PNG_CRC_WARN_DISCARD 2 warn/discard data
+ PNG_CRC_WARN_USE 3 warn/use data
+ PNG_CRC_QUIET_USE 4 quiet/use data
+ PNG_CRC_NO_CHANGE 5 use the current value
+
.SS Setting up callback code
You can set up a callback function to handle any unknown chunks in the
@@ -1231,6 +1506,19 @@
png_set_read_status_fn(png_ptr, read_row_callback);
+When this function is called the row has already been completely processed and
+the 'row' and 'pass' refer to the next row to be handled. For the
+non-interlaced case the row that was just handled is simply one less than the
+passed in row number, and pass will always be 0. For the interlaced case the
+same applies unless the row value is 0, in which case the row just handled was
+the last one from one of the preceding passes. Because interlacing may skip a
+pass you cannot be sure that the preceding pass is just 'pass-1', if you really
+need to know what the last pass is record (row,pass) from the callback and use
+the last recorded value each time.
+
+As with the user transform you can find the output row using the
+PNG_ROW_FROM_PASS_ROW macro.
+
.SS Unknown-chunk handling
Now you get to set the way the library processes unknown chunks in the
@@ -1246,14 +1534,17 @@
1: ignore; do not keep
2: keep only if safe-to-copy
3: keep even if unsafe-to-copy
+
You can use these definitions:
PNG_HANDLE_CHUNK_AS_DEFAULT 0
PNG_HANDLE_CHUNK_NEVER 1
PNG_HANDLE_CHUNK_IF_SAFE 2
PNG_HANDLE_CHUNK_ALWAYS 3
+
chunk_list - list of chunks affected (a byte string,
five bytes per chunk, NULL or '\0' if
num_chunks is 0)
+
num_chunks - number of chunks affected; if 0, all
unknown chunks are affected. If nonzero,
only the chunks in the list are affected
@@ -1265,6 +1556,8 @@
instances of png_set_keep_unknown_chunks(), the final instance will
take precedence. The IHDR and IEND chunks should not be named in
chunk_list; if they are, libpng will process them normally anyway.
+If you know that your application will never make use of some particular
+chunks, use PNG_HANDLE_CHUNK_NEVER (or 1) as demonstrated below.
Here is an example of the usage of png_set_keep_unknown_chunks(),
where the private "vpAg" chunk will later be processed by a user chunk
@@ -1289,8 +1582,10 @@
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
/* ignore all unknown chunks: */
png_set_keep_unknown_chunks(read_ptr, 1, NULL, 0);
+
/* except for vpAg: */
png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
+
/* also ignore unused known chunks: */
png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
(int)sizeof(unused_chunks)/5);
@@ -1303,7 +1598,7 @@
Since very few applications really need to process such large images,
we have imposed an arbitrary 1-million limit on rows and columns.
Larger images will be rejected immediately with a png_error() call. If
-you wish to override this limit, you can use
+you wish to change this limit, you can use
png_set_user_limits(png_ptr, width_max, height_max);
@@ -1313,6 +1608,10 @@
You should put this statement after you create the PNG structure and
before calling png_read_info(), png_read_png(), or png_process_data().
+
+When writing a PNG datastream, put this statement before calling
+png_write_info() or png_write_png().
+
If you need to retrieve the limits that are being applied, use
width_max = png_get_user_width_max(png_ptr);
@@ -1343,6 +1642,242 @@
Any chunks that would cause either of these limits to be exceeded will
be ignored.
+.SS Information about your system
+
+If you intend to display the PNG or to incorporate it in other image data you
+need to tell libpng information about your display or drawing surface so that
+libpng can convert the values in the image to match the display.
+
+From libpng-1.5.4 this information can be set before reading the PNG file
+header. In earlier versions png_set_gamma() existed but behaved incorrectly if
+called before the PNG file header had been read and png_set_alpha_mode() did not
+exist.
+
+If you need to support versions prior to libpng-1.5.4 test the version number
+as illustrated below using "PNG_LIBPNG_VER >= 10504" and follow the procedures
+described in the appropriate manual page.
+
+You give libpng the encoding expected by your system expressed as a 'gamma'
+value. You can also specify a default encoding for the PNG file in
+case the required information is missing from the file. By default libpng
+assumes that the PNG data matches your system, to keep this default call:
+
+ png_set_gamma(png_ptr, screen_gamma, 1/screen_gamma/*file gamma*/);
+
+or you can use the fixed point equivalent:
+
+ png_set_gamma_fixed(png_ptr, PNG_FP_1*screen_gamma, PNG_FP_1/screen_gamma);
+
+If you don't know the gamma for your system it is probably 2.2 - a good
+approximation to the IEC standard for display systems (sRGB). If images are
+too contrasty or washed out you got the value wrong - check your system
+documentation!
+
+Many systems permit the system gamma to be changed via a lookup table in the
+display driver, a few systems, including older Macs, change the response by
+default. As of 1.5.4 three special values are available to handle common
+situations:
+
+ PNG_DEFAULT_sRGB: Indicates that the system conforms to the IEC 61966-2-1
+ standard. This matches almost all systems.
+ PNG_GAMMA_MAC_18: Indicates that the system is an older (pre Mac OS 10.6)
+ Apple Macintosh system with the default settings.
+ PNG_GAMMA_LINEAR: Just the fixed point value for 1.0 - indicates that the
+ system expects data with no gamma encoding.
+
+You would use the linear (unencoded) value if you need to process the pixel
+values further because this avoids the need to decode and reencode each
+component value whenever arithmetic is performed. A lot of graphics software
+uses linear values for this reason, often with higher precision component values
+to preserve overall accuracy.
+
+The second thing you may need to tell libpng about is how your system handles
+alpha channel information. Some, but not all, PNG files contain an alpha
+channel. To display these files correctly you need to compose the data onto a
+suitable background, as described in the PNG specification.
+
+Libpng only supports composing onto a single color (using png_set_background;
+see below). Otherwise you must do the composition yourself and, in this case,
+you may need to call png_set_alpha_mode:
+
+#if PNG_LIBPNG_VER >= 10504
+ png_set_alpha_mode(png_ptr, mode, screen_gamma);
+#else
+ png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
+#endif
+
+The screen_gamma value is the same as the argument to png_set_gamma; however,
+how it affects the output depends on the mode. png_set_alpha_mode() sets the
+file gamma default to 1/screen_gamma, so normally you don't need to call
+png_set_gamma. If you need different defaults call png_set_gamma() before
+png_set_alpha_mode() - if you call it after it will override the settings made
+by png_set_alpha_mode().
+
+The mode is as follows:
+
+ PNG_ALPHA_PNG: The data is encoded according to the PNG specification. Red,
+green and blue, or gray, components are gamma encoded color
+values and are not premultiplied by the alpha value. The
+alpha value is a linear measure of the contribution of the
+pixel to the corresponding final output pixel.
+
+You should normally use this format if you intend to perform
+color correction on the color values; most, maybe all, color
+correction software has no handling for the alpha channel and,
+anyway, the math to handle pre-multiplied component values is
+unnecessarily complex.
+
+Before you do any arithmetic on the component values you need
+to remove the gamma encoding and multiply out the alpha
+channel. See the PNG specification for more detail. It is
+important to note that when an image with an alpha channel is
+scaled, linear encoded, pre-multiplied component values must
+be used!
+
+The remaining modes assume you don't need to do any further color correction or
+that if you do, your color correction software knows all about alpha (it
+probably doesn't!)
+
+ PNG_ALPHA_STANDARD: The data libpng produces
+is encoded in the standard way
+assumed by most correctly written graphics software.
+The gamma encoding will be removed by libpng and the
+linear component values will be pre-multiplied by the
+alpha channel.
+
+With this format the final image must be re-encoded to
+match the display gamma before the image is displayed.
+If your system doesn't do that, yet still seems to
+perform arithmetic on the pixels without decoding them,
+it is broken - check out the modes below.
+
+With PNG_ALPHA_STANDARD libpng always produces linear
+component values, whatever screen_gamma you supply. The
+screen_gamma value is, however, used as a default for
+the file gamma if the PNG file has no gamma information.
+
+If you call png_set_gamma() after png_set_alpha_mode() you
+will override the linear encoding. Instead the
+pre-multiplied pixel values will be gamma encoded but
+the alpha channel will still be linear. This may
+actually match the requirements of some broken software,
+but it is unlikely.
+
+While linear 8-bit data is often used it has
+insufficient precision for any image with a reasonable
+dynamic range. To avoid problems, and if your software
+supports it, use png_set_expand_16() to force all
+components to 16 bits.
+
+ PNG_ALPHA_OPTIMIZED: This mode is the same
+as PNG_ALPHA_STANDARD except that
+completely opaque pixels are gamma encoded according to
+the screen_gamma value. Pixels with alpha less than 1.0
+will still have linear components.
+
+Use this format if you have control over your
+compositing software and do don't do other arithmetic
+(such as scaling) on the data you get from libpng. Your
+compositing software can simply copy opaque pixels to
+the output but still has linear values for the
+non-opaque pixels.
+
+In normal compositing, where the alpha channel encodes
+partial pixel coverage (as opposed to broad area
+translucency), the inaccuracies of the 8-bit
+representation of non-opaque pixels are irrelevant.
+
+You can also try this format if your software is broken;
+it might look better.
+
+ PNG_ALPHA_BROKEN: This is PNG_ALPHA_STANDARD;
+however, all component values,
+including the alpha channel are gamma encoded. This is
+an appropriate format to try if your software, or more
+likely hardware, is totally broken, i.e., if it performs
+linear arithmetic directly on gamma encoded values.
+
+In most cases of broken software or hardware the bug in the final display
+manifests as a subtle halo around composited parts of the image. You may not
+even perceive this as a halo; the composited part of the image may simply appear
+separate from the background, as though it had been cut out of paper and pasted
+on afterward.
+
+If you don't have to deal with bugs in software or hardware, or if you can fix
+them, there are three recommended ways of using png_set_alpha_mode():
+
+ png_set_alpha_mode(png_ptr, PNG_ALPHA_PNG,
+ screen_gamma);
+
+You can do color correction on the result (libpng does not currently
+support color correction internally). When you handle the alpha channel
+you need to undo the gamma encoding and multiply out the alpha.
+
+ png_set_alpha_mode(png_ptr, PNG_ALPHA_STANDARD,
+ screen_gamma);
+ png_set_expand_16(png_ptr);
+
+If you are using the high level interface, don't call png_set_expand_16();
+instead pass PNG_TRANSFORM_EXPAND_16 to the interface.
+
+With this mode you can't do color correction, but you can do arithmetic,
+including composition and scaling, on the data without further processing.
+
+ png_set_alpha_mode(png_ptr, PNG_ALPHA_OPTIMIZED,
+ screen_gamma);
+
+You can avoid the expansion to 16-bit components with this mode, but you
+lose the ability to scale the image or perform other linear arithmetic.
+All you can do is compose the result onto a matching output. Since this
+mode is libpng-specific you also need to write your own composition
+software.
+
+If you don't need, or can't handle, the alpha channel you can call
+png_set_background() to remove it by compositing against a fixed color. Don't
+call png_set_strip_alpha() to do this - it will leave spurious pixel values in
+transparent parts of this image.
+
+ png_set_background(png_ptr, &background_color,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0, 1);
+
+The background_color is an RGB or grayscale value according to the data format
+libpng will produce for you. Because you don't yet know the format of the PNG
+file, if you call png_set_background at this point you must arrange for the
+format produced by libpng to always have 8-bit or 16-bit components and then
+store the color as an 8-bit or 16-bit color as appropriate. The color contains
+separate gray and RGB component values, so you can let libpng produce gray or
+RGB output according to the input format, but low bit depth grayscale images
+must always be converted to at least 8-bit format. (Even though low bit depth
+grayscale images can't have an alpha channel they can have a transparent
+color!)
+
+You set the transforms you need later, either as flags to the high level
+interface or libpng API calls for the low level interface. For reference the
+settings and API calls required are:
+
+8-bit values:
+ PNG_TRANSFORM_SCALE_16 | PNG_EXPAND
+ png_set_expand(png_ptr); png_set_scale_16(png_ptr);
+
+ If you must get exactly the same inaccurate results
+ produced by default in versions prior to libpng-1.5.4,
+ use PNG_TRANSFORM_STRIP_16 and png_set_strip_16(png_ptr)
+ instead.
+
+16-bit values:
+ PNG_TRANSFORM_EXPAND_16
+ png_set_expand_16(png_ptr);
+
+In either case palette image data will be expanded to RGB. If you just want
+color data you can add PNG_TRANSFORM_GRAY_TO_RGB or png_set_gray_to_rgb(png_ptr)
+to the list.
+
+Calling png_set_background before the PNG file header is read will not work
+prior to libpng-1.5.4. Because the failure may result in unexpected warnings or
+errors it is therefore much safer to call png_set_background after the head has
+been read. Unfortunately this means that prior to libpng-1.5.4 it cannot be
+used with the high level interface.
+
.SS The high-level read interface
At this point there are two ways to proceed; through the high-level
@@ -1352,8 +1887,10 @@
you want to do are limited to the following set:
PNG_TRANSFORM_IDENTITY No transformation
- PNG_TRANSFORM_STRIP_16 Strip 16-bit samples to
- 8 bits
+ PNG_TRANSFORM_SCALE_16 Strip 16-bit samples to
+ 8-bit accurately
+ PNG_TRANSFORM_STRIP_16 Chop 16-bit samples to
+ 8-bit less accurately
PNG_TRANSFORM_STRIP_ALPHA Discard the alpha channel
PNG_TRANSFORM_PACKING Expand 1, 2 and 4-bit
samples to bytes
@@ -1372,6 +1909,7 @@
PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
PNG_TRANSFORM_GRAY_TO_RGB Expand grayscale samples
to RGB (or GA to RGBA)
+ PNG_TRANSFORM_EXPAND_16 Expand samples to 16 bits
(This excludes setting a background color, doing gamma transformation,
quantizing, and setting filler.) If this is the case, simply do this:
@@ -1403,17 +1941,22 @@
if (height > PNG_UINT_32_MAX/png_sizeof(png_byte))
png_error (png_ptr,
- "Image is too tall to process in memory");
+ "Image is too tall to process in memory");
+
if (width > PNG_UINT_32_MAX/pixel_size)
png_error (png_ptr,
- "Image is too wide to process in memory");
+ "Image is too wide to process in memory");
+
row_pointers = png_malloc(png_ptr,
- height*png_sizeof(png_bytep));
+ height*png_sizeof(png_bytep));
+
for (int i=0; i<height, i++)
row_pointers[i]=NULL; /* security precaution */
+
for (int i=0; i<height, i++)
row_pointers[i]=png_malloc(png_ptr,
- width*pixel_size);
+ width*pixel_size);
+
png_set_rows(png_ptr, info_ptr, &row_pointers);
Alternatively you could allocate your image in one big block and define
@@ -1423,7 +1966,7 @@
row_pointers (and row_pointers[i], if they were separately allocated).
If you don't allocate row_pointers ahead of time, png_read_png() will
-do it, and it'll be free'ed when you call png_destroy_*().
+do it, and it'll be free'ed by libpng when you call png_destroy_*().
.SS The low-level read interface
@@ -1435,6 +1978,22 @@
This will process all chunks up to but not including the image data.
+This also copies some of the data from the PNG file into the decode structure
+for use in later transformations. Important information copied in is:
+
+1) The PNG file gamma from the gAMA chunk. This overwrites the default value
+provided by an earlier call to png_set_gamma or png_set_alpha_mode.
+
+2) Prior to libpng-1.5.4 the background color from a bKGd chunk. This
+damages the information provided by an earlier call to png_set_background
+resulting in unexpected behavior. Libpng-1.5.4 no longer does this.
+
+3) The number of significant bits in each component value. Libpng uses this to
+optimize gamma handling by reducing the internal lookup table sizes.
+
+4) The transparent color information from a tRNS chunk. This can be modified by
+a later call to png_set_tRNS.
+
.SS Querying the info structure
Functions are used to get the information from the info_ptr once it
@@ -1447,13 +2006,16 @@
width - holds the width of the image
in pixels (up to 2^31).
+
height - holds the height of the image
in pixels (up to 2^31).
+
bit_depth - holds the bit depth of one of the
image channels. (valid values are
1, 2, 4, 8, 16 and depend also on
the color_type. See also
significant bits (sBIT) below).
+
color_type - describes which color/alpha channels
are present.
PNG_COLOR_TYPE_GRAY
@@ -1496,28 +2058,38 @@
width = png_get_image_width(png_ptr,
info_ptr);
+
height = png_get_image_height(png_ptr,
info_ptr);
+
bit_depth = png_get_bit_depth(png_ptr,
info_ptr);
+
color_type = png_get_color_type(png_ptr,
info_ptr);
+
interlace_type = png_get_interlace_type(png_ptr,
info_ptr);
+
compression_type = png_get_compression_type(png_ptr,
info_ptr);
+
filter_method = png_get_filter_type(png_ptr,
info_ptr);
channels = png_get_channels(png_ptr, info_ptr);
+
channels - number of channels of info for the
color type (valid values are 1 (GRAY,
PALETTE), 2 (GRAY_ALPHA), 3 (RGB),
4 (RGB_ALPHA or RGB + filler byte))
+
rowbytes = png_get_rowbytes(png_ptr, info_ptr);
+
rowbytes - number of bytes needed to hold a row
signature = png_get_signature(png_ptr, info_ptr);
+
signature - holds the signature read from the
file (if any). The data is kept in
the same offset it would be if the
@@ -1537,16 +2109,46 @@
png_get_PLTE(png_ptr, info_ptr, &palette,
&num_palette);
+
palette - the palette for the file
(array of png_color)
+
num_palette - number of entries in the palette
- png_get_gAMA(png_ptr, info_ptr, &gamma);
- gamma - the gamma the file is written
- at (PNG_INFO_gAMA)
+ png_get_gAMA(png_ptr, info_ptr, &file_gamma);
+ png_get_gAMA_fixed(png_ptr, info_ptr, &int_file_gamma);
+
+ file_gamma - the gamma at which the file is
+ written (PNG_INFO_gAMA)
+
+ int_file_gamma - 100,000 times the gamma at which the
+ file is written
+
+ png_get_cHRM(png_ptr, info_ptr, &white_x, &white_y, &red_x, &red_y,
+ &green_x, &green_y, &blue_x, &blue_y)
+ png_get_cHRM_XYZ(png_ptr, info_ptr, &red_X, &red_Y, &red_Z, &green_X,
+ &green_Y, &green_Z, &blue_X, &blue_Y, &blue_Z)
+ png_get_cHRM_fixed(png_ptr, info_ptr, &int_white_x, &int_white_y,
+ &int_red_x, &int_red_y, &int_green_x, &int_green_y,
+ &int_blue_x, &int_blue_y)
+ png_get_cHRM_XYZ_fixed(png_ptr, info_ptr, &int_red_X, &int_red_Y,
+ &int_red_Z, &int_green_X, &int_green_Y, &int_green_Z,
+ &int_blue_X, &int_blue_Y, &int_blue_Z)
+
+ {white,red,green,blue}_{x,y}
+ A color space encoding specified using the chromaticities
+ of the end points and the white point. (PNG_INFO_cHRM)
+
+ {red,green,blue}_{X,Y,Z}
+ A color space encoding specified using the encoding end
+ points - the CIE tristimulus specification of the intended
+ color of the red, green and blue channels in the PNG RGB
+ data. The white point is simply the sum of the three end
+ points. (PNG_INFO_cHRM)
png_get_sRGB(png_ptr, info_ptr, &srgb_intent);
- srgb_intent - the rendering intent (PNG_INFO_sRGB)
+
+ file_srgb_intent - the rendering intent (PNG_INFO_sRGB)
The presence of the sRGB chunk
means that the pixel data is in the
sRGB color space. This chunk also
@@ -1555,16 +2157,21 @@
png_get_iCCP(png_ptr, info_ptr, &name,
&compression_type, &profile, &proflen);
+
name - The profile name.
+
compression_type - The compression type; always
PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
You may give NULL to this argument to
ignore it.
+
profile - International Color Consortium color
profile data. May contain NULs.
+
proflen - length of profile data in bytes.
png_get_sBIT(png_ptr, info_ptr, &sig_bit);
+
sig_bit - the number of significant bits for
(PNG_INFO_sBIT) each of the gray,
red, green, and blue channels,
@@ -1573,24 +2180,30 @@
png_get_tRNS(png_ptr, info_ptr, &trans_alpha,
&num_trans, &trans_color);
+
trans_alpha - array of alpha (transparency)
entries for palette (PNG_INFO_tRNS)
+
num_trans - number of transparent entries
(PNG_INFO_tRNS)
+
trans_color - graylevel or color sample values of
the single transparent color for
non-paletted images (PNG_INFO_tRNS)
png_get_hIST(png_ptr, info_ptr, &hist);
(PNG_INFO_hIST)
+
hist - histogram of palette (array of
png_uint_16)
png_get_tIME(png_ptr, info_ptr, &mod_time);
+
mod_time - time image was last modified
(PNG_VALID_tIME)
png_get_bKGD(png_ptr, info_ptr, &background);
+
background - background color (of type
png_color_16p) (PNG_VALID_bKGD)
valid 16-bit red, green and blue
@@ -1598,33 +2211,49 @@
num_comments = png_get_text(png_ptr, info_ptr,
&text_ptr, &num_text);
+
num_comments - number of comments
+
text_ptr - array of png_text holding image
comments
+
text_ptr[i].compression - type of compression used
on "text" PNG_TEXT_COMPRESSION_NONE
PNG_TEXT_COMPRESSION_zTXt
PNG_ITXT_COMPRESSION_NONE
PNG_ITXT_COMPRESSION_zTXt
+
text_ptr[i].key - keyword for comment. Must contain
1-79 characters.
+
text_ptr[i].text - text comments for current
keyword. Can be empty.
+
text_ptr[i].text_length - length of text string,
after decompression, 0 for iTXt
+
text_ptr[i].itxt_length - length of itxt string,
after decompression, 0 for tEXt/zTXt
+
text_ptr[i].lang - language of comment (empty
string for unknown).
+
text_ptr[i].lang_key - keyword in UTF-8
(empty string for unknown).
+
Note that the itxt_length, lang, and lang_key
- members of the text_ptr structure only exist
- when the library is built with iTXt chunk support.
+ members of the text_ptr structure only exist when the
+ library is built with iTXt chunk support. Prior to
+ libpng-1.4.0 the library was built by default without
+ iTXt support. Also note that when iTXt is supported,
+ they contain NULL pointers when the "compression"
+ field contains PNG_TEXT_COMPRESSION_NONE or
+ PNG_TEXT_COMPRESSION_zTXt.
num_text - number of comments (same as
num_comments; you can put NULL here
to avoid the duplication)
+
Note while png_set_text() will accept text, language,
and translated keywords that can be NULL pointers, the
structure returned by png_get_text will always contain
@@ -1633,90 +2262,137 @@
num_spalettes = png_get_sPLT(png_ptr, info_ptr,
&palette_ptr);
+
+ num_spalettes - number of sPLT chunks read.
+
palette_ptr - array of palette structures holding
contents of one or more sPLT chunks
read.
- num_spalettes - number of sPLT chunks read.
png_get_oFFs(png_ptr, info_ptr, &offset_x, &offset_y,
&unit_type);
+
offset_x - positive offset from the left edge
- of the screen
+ of the screen (can be negative)
+
offset_y - positive offset from the top edge
- of the screen
+ of the screen (can be negative)
+
unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
png_get_pHYs(png_ptr, info_ptr, &res_x, &res_y,
&unit_type);
+
res_x - pixels/unit physical resolution in
x direction
+
res_y - pixels/unit physical resolution in
x direction
+
unit_type - PNG_RESOLUTION_UNKNOWN,
PNG_RESOLUTION_METER
png_get_sCAL(png_ptr, info_ptr, &unit, &width,
&height)
+
unit - physical scale units (an integer)
+
width - width of a pixel in physical scale units
+
height - height of a pixel in physical scale units
(width and height are doubles)
png_get_sCAL_s(png_ptr, info_ptr, &unit, &width,
&height)
+
unit - physical scale units (an integer)
+
width - width of a pixel in physical scale units
+ (expressed as a string)
+
height - height of a pixel in physical scale units
(width and height are strings like "2.54")
num_unknown_chunks = png_get_unknown_chunks(png_ptr,
info_ptr, &unknowns)
+
unknowns - array of png_unknown_chunk
structures holding unknown chunks
+
unknowns[i].name - name of unknown chunk
+
unknowns[i].data - data of unknown chunk
+
unknowns[i].size - size of unknown chunk's data
+
unknowns[i].location - position of chunk in file
The value of "i" corresponds to the order in which the
chunks were read from the PNG file or inserted with the
png_set_unknown_chunks() function.
+ The value of "location" is a bitwise "or" of
+
+ PNG_HAVE_IHDR (0x01)
+ PNG_HAVE_PLTE (0x02)
+ PNG_AFTER_IDAT (0x08)
+
The data from the pHYs chunk can be retrieved in several convenient
forms:
res_x = png_get_x_pixels_per_meter(png_ptr,
info_ptr)
+
res_y = png_get_y_pixels_per_meter(png_ptr,
info_ptr)
+
res_x_and_y = png_get_pixels_per_meter(png_ptr,
info_ptr)
+
res_x = png_get_x_pixels_per_inch(png_ptr,
info_ptr)
+
res_y = png_get_y_pixels_per_inch(png_ptr,
info_ptr)
+
res_x_and_y = png_get_pixels_per_inch(png_ptr,
info_ptr)
+
aspect_ratio = png_get_pixel_aspect_ratio(png_ptr,
info_ptr)
- (Each of these returns 0 [signifying "unknown"] if
+ Each of these returns 0 [signifying "unknown"] if
the data is not present or if res_x is 0;
- res_x_and_y is 0 if res_x != res_y)
+ res_x_and_y is 0 if res_x != res_y
+
+ Note that because of the way the resolutions are
+ stored internally, the inch conversions won't
+ come out to exactly even number. For example,
+ 72 dpi is stored as 0.28346 pixels/meter, and
+ when this is retrieved it is 71.9988 dpi, so
+ be sure to round the returned value appropriately
+ if you want to display a reasonable-looking result.
The data from the oFFs chunk can be retrieved in several convenient
forms:
x_offset = png_get_x_offset_microns(png_ptr, info_ptr);
+
y_offset = png_get_y_offset_microns(png_ptr, info_ptr);
+
x_offset = png_get_x_offset_inches(png_ptr, info_ptr);
+
y_offset = png_get_y_offset_inches(png_ptr, info_ptr);
- (Each of these returns 0 [signifying "unknown" if both
+ Each of these returns 0 [signifying "unknown" if both
x and y are 0] if the data is not present or if the
- chunk is present but the unit is the pixel)
+ chunk is present but the unit is the pixel. The
+ remark about inexact inch conversions applies here
+ as well, because a value in inches can't always be
+ converted to microns and back without some loss
+ of precision.
-For more information, see the png_info definition in png.h and the
+For more information, see the
PNG specification for chunk contents. Be careful with trusting
rowbytes, as some of the transformations could increase the space
needed to hold a row (expand, filler, gray_to_rgb, etc.).
@@ -1751,17 +2427,20 @@
ways to transform the data will be described in the order that they
should occur. This is important, as some of these change the color
type and/or bit depth of the data, and some others only work on
-certain color types and bit depths. Even though each transformation
-checks to see if it has data that it can do something with, you should
-make sure to only enable a transformation if it will be valid for the
-data. For example, don't swap red and blue on grayscale data.
+certain color types and bit depths.
-The colors used for the background and transparency values should be
-supplied in the same format/depth as the current image data. They
-are stored in the same format/depth as the image data in a bKGD or tRNS
-chunk, so this is what libpng expects for this data. The colors are
-transformed to keep in sync with the image data when an application
-calls the png_read_update_info() routine (see below).
+Transformations you request are ignored if they don't have any meaning for a
+particular input data format. However some transformations can have an effect
+as a result of a previous transformation. If you specify a contradictory set of
+transformations, for example both adding and removing the alpha channel, you
+cannot predict the final result.
+
+The color used for the transparency values should be supplied in the same
+format/depth as the current image data. It is stored in the same format/depth
+as the image data in a tRNS chunk, so this is what libpng expects for this data.
+
+The color used for the background value depends on the need_expand argument as
+described below.
Data will be decoded into the supplied row buffers packed into bytes
unless the library has been told to transform it into another format.
@@ -1771,12 +2450,12 @@
in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha()
is called to insert filler bytes, either before or after each RGB triplet.
16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant
-byte of the color value first, unless png_set_strip_16() is called to
+byte of the color value first, unless png_set_scale_16() is called to
transform it to regular RGB RGB triplets, or png_set_filler() or
png_set_add alpha() is called to insert filler bytes, either before or
after each RRGGBB triplet. Similarly, 8-bit or 16-bit grayscale data can
-be modified with
-png_set_filler(), png_set_add_alpha(), or png_set_strip_16().
+be modified with png_set_filler(), png_set_add_alpha(), png_set_strip_16(),
+or png_set_scale_16().
The following code transforms grayscale images of less than 8 to 8 bits,
changes paletted images to RGB, and adds a full alpha channel if there is
@@ -1787,13 +2466,13 @@
if (color_type == PNG_COLOR_TYPE_PALETTE)
png_set_palette_to_rgb(png_ptr);
- if (color_type == PNG_COLOR_TYPE_GRAY &&
- bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr);
-
if (png_get_valid(png_ptr, info_ptr,
PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr);
-These three functions are actually aliases for png_set_expand(), added
+ if (color_type == PNG_COLOR_TYPE_GRAY &&
+ bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr);
+
+The first two functions are actually aliases for png_set_expand(), added
in libpng version 1.0.4, with the function names expanded to improve code
readability. In some future version they may actually do different
things.
@@ -1801,56 +2480,91 @@
As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
added. It expands the sample depth without changing tRNS to alpha.
-As of libpng version 1.4.9beta01, not all possible expansions are supported.
+As of libpng version 1.5.2, png_set_expand_16() was added. It behaves as
+png_set_expand(); however, the resultant channels have 16 bits rather than 8.
+Use this when the output color or gray channels are made linear to avoid fairly
+severe accuracy loss.
+
+ if (bit_depth < 16)
+ png_set_expand_16(png_ptr);
+
+PNG can have files with 16 bits per channel. If you only can handle
+8 bits per channel, this will strip the pixels down to 8-bit.
+
+ if (bit_depth == 16)
+#if PNG_LIBPNG_VER >= 10504
+ png_set_scale_16(png_ptr);
+#else
+ png_set_strip_16(png_ptr);
+#endif
+
+(The more accurate "png_set_scale_16()" API became available in libpng version
+1.5.4).
+
+If you need to process the alpha channel on the image separately from the image
+data (for example if you convert it to a bitmap mask) it is possible to have
+libpng strip the channel leaving just RGB or gray data:
+
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ png_set_strip_alpha(png_ptr);
+
+If you strip the alpha channel you need to find some other way of dealing with
+the information. If, instead, you want to convert the image to an opaque
+version with no alpha channel use png_set_background; see below.
+
+As of libpng version 1.5.2, almost all useful expansions are supported, the
+major ommissions are conversion of grayscale to indexed images (which can be
+done trivially in the application) and conversion of indexed to grayscale (which
+can be done by a trivial manipulation of the palette.)
In the following table, the 01 means grayscale with depth<8, 31 means
indexed with depth<8, other numerals represent the color type, "T" means
the tRNS chunk is present, A means an alpha channel is present, and O
means tRNS or alpha is present but all pixels in the image are opaque.
- FROM 01 31 0 0T 0O 2 2T 2O 3 3T 3O 4A 4O 6A 6O
+ FROM 01 31 0 0T 0O 2 2T 2O 3 3T 3O 4A 4O 6A 6O
TO
- 01 -
- 31 -
- 0 1 -
- 0T -
- 0O -
- 2 GX -
- 2T -
- 2O -
- 3 1 -
- 3T -
- 3O -
- 4A T -
- 4O -
- 6A GX TX TX -
- 6O GX TX -
+ 01 - [G] - - - - - - - - - - - - -
+ 31 [Q] Q [Q] [Q] [Q] Q Q Q Q Q Q [Q] [Q] Q Q
+ 0 1 G + . . G G G G G G B B GB GB
+ 0T lt Gt t + . Gt G G Gt G G Bt Bt GBt GBt
+ 0O lt Gt t . + Gt Gt G Gt Gt G Bt Bt GBt GBt
+ 2 C P C C C + . . C - - CB CB B B
+ 2T Ct - Ct C C t + t - - - CBt CBt Bt Bt
+ 2O Ct - Ct C C t t + - - - CBt CBt Bt Bt
+ 3 [Q] p [Q] [Q] [Q] Q Q Q + . . [Q] [Q] Q Q
+ 3T [Qt] p [Qt][Q] [Q] Qt Qt Qt t + t [Qt][Qt] Qt Qt
+ 3O [Qt] p [Qt][Q] [Q] Qt Qt Qt t t + [Qt][Qt] Qt Qt
+ 4A lA G A T T GA GT GT GA GT GT + BA G GBA
+ 4O lA GBA A T T GA GT GT GA GT GT BA + GBA G
+ 6A CA PA CA C C A T tT PA P P C CBA + BA
+ 6O CA PBA CA C C A tT T PA P P CBA C BA +
Within the matrix,
+ "+" identifies entries where 'from' and 'to' are the same.
"-" means the transformation is not supported.
+ "." means nothing is necessary (a tRNS chunk can just be ignored).
+ "t" means the transformation is obtained by png_set_tRNS.
+ "A" means the transformation is obtained by png_set_add_alpha().
"X" means the transformation is obtained by png_set_expand().
"1" means the transformation is obtained by
- png_set_expand_gray_1_2_4_to_8
- "G" means the transformation is obtained by
- png_set_gray_to_rgb().
+ png_set_expand_gray_1_2_4_to_8() (and by png_set_expand() if there
+ is no transparency in the original or the final format).
+ "C" means the transformation is obtained by png_set_gray_to_rgb().
+ "G" means the transformation is obtained by png_set_rgb_to_gray().
"P" means the transformation is obtained by
png_set_expand_palette_to_rgb().
- "T" means the transformation is obtained by
- png_set_tRNS_to_alpha().
+ "p" means the transformation is obtained by png_set_packing().
+ "Q" means the transformation is obtained by png_set_quantize().
+ "T" means the transformation is obtained by png_set_tRNS_to_alpha().
+ "B" means the transformation is obtained by png_set_background(), or
+ png_strip_alpha().
-PNG can have files with 16 bits per channel. If you only can handle
-8 bits per channel, this will strip the pixels down to 8 bit.
-
- if (bit_depth == 16)
- png_set_strip_16(png_ptr);
-
-If, for some reason, you don't need the alpha channel on an image,
-and you want to remove it rather than combining it with the background
-(but the image author certainly had in mind that you *would* combine
-it with the background, so that's what you should probably do):
-
- if (color_type & PNG_COLOR_MASK_ALPHA)
- png_set_strip_alpha(png_ptr);
+When an entry has multiple transforms listed all are required to cause the
+right overall transformation. When two transforms are separated by a comma
+either will do the job. When transforms are enclosed in [] the transform should
+do the job but this is currently unimplemented - a different format will result
+if the suggested transformations are used.
In PNG files, the alpha channel in an image
is the level of opacity. If you need the alpha channel in an image to
@@ -1867,7 +2581,7 @@
values of the pixels:
if (bit_depth < 8)
- png_set_packing(png_ptr);
+ png_set_packing(png_ptr);
PNG files have possible bit depths of 1, 2, 4, 8, and 16. All pixels
stored in a PNG image have been "scaled" or "shifted" up to the next
@@ -1879,20 +2593,20 @@
png_color_8p sig_bit;
if (png_get_sBIT(png_ptr, info_ptr, &sig_bit))
- png_set_shift(png_ptr, sig_bit);
+ png_set_shift(png_ptr, sig_bit);
PNG files store 3-color pixels in red, green, blue order. This code
changes the storage of the pixels to blue, green, red:
if (color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- png_set_bgr(png_ptr);
+ png_set_bgr(png_ptr);
PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them
into 4 or 8 bytes for windowing systems that need them in this format:
if (color_type == PNG_COLOR_TYPE_RGB)
- png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
+ png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
where "filler" is the 8 or 16-bit number to fill with, and the location is
either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether
@@ -1905,8 +2619,8 @@
to do that, you can add a true alpha channel with
if (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_GRAY)
- png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER);
+ color_type == PNG_COLOR_TYPE_GRAY)
+ png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER);
where "filler" contains the alpha value to assign to each pixel.
This function was added in libpng-1.2.7.
@@ -1915,174 +2629,157 @@
data as ARGB instead of the normal PNG format RGBA:
if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- png_set_swap_alpha(png_ptr);
+ png_set_swap_alpha(png_ptr);
For some uses, you may want a grayscale image to be represented as
RGB. This code will do that conversion:
if (color_type == PNG_COLOR_TYPE_GRAY ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- png_set_gray_to_rgb(png_ptr);
+ png_set_gray_to_rgb(png_ptr);
Conversely, you can convert an RGB or RGBA image to grayscale or grayscale
with alpha.
if (color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- png_set_rgb_to_gray_fixed(png_ptr, error_action,
- int red_weight, int green_weight);
+ png_set_rgb_to_gray(png_ptr, error_action, double red_weight,
+ double green_weight);
error_action = 1: silently do the conversion
+
error_action = 2: issue a warning if the original
image has any pixel where
red != green or red != blue
+
error_action = 3: issue an error and abort the
conversion if the original
image has any pixel where
red != green or red != blue
- red_weight: weight of red component times 100000
- green_weight: weight of green component times 100000
+ red_weight: weight of red component
+
+ green_weight: weight of green component
If either weight is negative, default
- weights (21268, 71514) are used.
+ weights are used.
+
+In the corresponding fixed point API the red_weight and green_weight values are
+simply scaled by 100,000:
+
+ png_set_rgb_to_gray(png_ptr, error_action, png_fixed_point red_weight,
+ png_fixed_point green_weight);
If you have set error_action = 1 or 2, you can
later check whether the image really was gray, after processing
the image rows, with the png_get_rgb_to_gray_status(png_ptr) function.
It will return a png_byte that is zero if the image was gray or
-1 if there were any non-gray pixels. bKGD and sBIT data
+1 if there were any non-gray pixels. Background and sBIT data
will be silently converted to grayscale, using the green channel
-data, regardless of the error_action setting.
+data for sBIT, regardless of the error_action setting.
-With red_weight+green_weight<=100000,
-the normalized graylevel is computed:
+The default values come from the PNG file cHRM chunk if present; otherwise, the
+defaults correspond to the ITU-R recommendation 709, and also the sRGB color
+space, as recommended in the Charles Poynton's Colour FAQ,
+<http://www.poynton.com/>, in section 9:
- int rw = red_weight * 65536;
- int gw = green_weight * 65536;
- int bw = 65536 - (rw + gw);
- gray = (rw*red + gw*green + bw*blue)/65536;
+ <http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html#RTFToC9>
-The default values approximate those recommended in the Charles
-Poynton's Color FAQ, <http://www.inforamp.net/~poynton/>
-Copyright (c) 1998-01-04 Charles Poynton <poynton at inforamp.net>
+ Y = 0.2126 * R + 0.7152 * G + 0.0722 * B
+
+Previous versions of this document, 1998 through 2002, recommended a slightly
+different formula:
Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
-Libpng approximates this with
+Libpng uses an integer approximation:
- Y = 0.21268 * R + 0.7151 * G + 0.07217 * B
-
-which can be expressed with integers as
-
- Y = (6969 * R + 23434 * G + 2365 * B)/32768
+ Y = (6968 * R + 23434 * G + 2366 * B)/32768
The calculation is done in a linear colorspace, if the image gamma
-is known.
+can be determined.
-If you have a grayscale and you are using png_set_expand_depth(),
-png_set_expand(), or png_set_gray_to_rgb to change to truecolor or to
-a higher bit-depth, you must either supply the background color as a gray
-value at the original file bit-depth (need_expand = 1) or else supply the
-background color as an RGB triplet at the final, expanded bit depth
-(need_expand = 0). Similarly, if you are reading a paletted image, you
-must either supply the background color as a palette index (need_expand = 1)
-or as an RGB triplet that may or may not be in the palette (need_expand = 0).
+The png_set_background() function has been described already; it tells libpng to
+composite images with alpha or simple transparency against the supplied
+background color. For compatibility with versions of libpng earlier than
+libpng-1.5.4 it is recommended that you call the function after reading the file
+header, even if you don't want to use the color in a bKGD chunk, if one exists.
+
+If the PNG file contains a bKGD chunk (PNG_INFO_bKGD valid),
+you may use this color, or supply another color more suitable for
+the current display (e.g., the background color from a web page). You
+need to tell libpng how the color is represented, both the format of the
+component values in the color (the number of bits) and the gamma encoding of the
+color. The function takes two arguments, background_gamma_mode and need_expand
+to convey this information, however only two combinations are likely to be
+useful:
png_color_16 my_background;
png_color_16p image_background;
if (png_get_bKGD(png_ptr, info_ptr, &image_background))
- png_set_background(png_ptr, image_background,
- PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
+ png_set_background(png_ptr, image_background,
+ PNG_BACKGROUND_GAMMA_FILE, 1/*needs to be expanded*/, 1);
else
- png_set_background(png_ptr, &my_background,
- PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
+ png_set_background(png_ptr, &my_background,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0/*do not expand*/, 1);
-The png_set_background() function tells libpng to composite images
-with alpha or simple transparency against the supplied background
-color. If the PNG file contains a bKGD chunk (PNG_INFO_bKGD valid),
-you may use this color, or supply another color more suitable for
-the current display (e.g., the background color from a web page). You
-need to tell libpng whether the color is in the gamma space of the
-display (PNG_BACKGROUND_GAMMA_SCREEN for colors you supply), the file
-(PNG_BACKGROUND_GAMMA_FILE for colors from the bKGD chunk), or one
-that is neither of these gammas (PNG_BACKGROUND_GAMMA_UNIQUE - I don't
-know why anyone would use this, but it's here).
+The second call was described above - my_background is in the format of the
+final, display, output produced by libpng. Because you now know the format of
+the PNG it is possible to avoid the need to choose either 8-bit or 16-bit
+output and to retain palette images (the palette colors will be modified
+appropriately and the tRNS chunk removed.) However, if you are doing this,
+take great care not to ask for transformations without checking first that
+they apply!
-To properly display PNG images on any kind of system, the application needs
-to know what the display gamma is. Ideally, the user will know this, and
-the application will allow them to set it. One method of allowing the user
-to set the display gamma separately for each system is to check for a
-SCREEN_GAMMA or DISPLAY_GAMMA environment variable, which will hopefully be
-correctly set.
+In the first call the background color has the original bit depth and color type
+of the PNG file. So, for palette images the color is supplied as a palette
+index and for low bit greyscale images the color is a reduced bit value in
+image_background->gray.
-Note that display_gamma is the overall gamma correction required to produce
-pleasing results, which depends on the lighting conditions in the surrounding
-environment. In a dim or brightly lit room, no compensation other than
-the physical gamma exponent of the monitor is needed, while in a dark room
-a slightly smaller exponent is better.
+If you didn't call png_set_gamma() before reading the file header, for example
+if you need your code to remain compatible with older versions of libpng prior
+to libpng-1.5.4, this is the place to call it.
- double gamma, screen_gamma;
+Do not call it if you called png_set_alpha_mode(); doing so will damage the
+settings put in place by png_set_alpha_mode(). (If png_set_alpha_mode() is
+supported then you can certainly do png_set_gamma() before reading the PNG
+header.)
- if (/* We have a user-defined screen
- gamma value */)
- {
- screen_gamma = user_defined_screen_gamma;
- }
- /* One way that applications can share the same
- screen gamma value */
- else if ((gamma_str = getenv("SCREEN_GAMMA"))
- != NULL)
- {
- screen_gamma = (double)atof(gamma_str);
- }
- /* If we don't have another value */
- else
- {
- screen_gamma = 2.2; /* A good guess for a
- PC monitor in a bright office or a dim room */
- screen_gamma = 2.0; /* A good guess for a
- PC monitor in a dark room */
- screen_gamma = 1.7 or 1.0; /* A good
- guess for Mac systems */
- }
+This API unconditionally sets the screen and file gamma values, so it will
+override the value in the PNG file unless it is called before the PNG file
+reading starts. For this reason you must always call it with the PNG file
+value when you call it in this position:
-The png_set_gamma() function handles gamma transformations of the data.
-Pass both the file gamma and the current screen_gamma. If the file does
-not have a gamma value, you can pass one anyway if you have an idea what
-it is (usually 0.45455 is a good guess for GIF images on PCs). Note
-that file gammas are inverted from screen gammas. See the discussions
-on gamma in the PNG specification for an excellent description of what
-gamma is, and why all applications should support it. It is strongly
-recommended that PNG viewers support gamma correction.
+ if (png_get_gAMA(png_ptr, info_ptr, &file_gamma))
+ png_set_gamma(png_ptr, screen_gamma, file_gamma);
- if (png_get_gAMA(png_ptr, info_ptr, &gamma))
- png_set_gamma(png_ptr, screen_gamma, gamma);
else
png_set_gamma(png_ptr, screen_gamma, 0.45455);
If you need to reduce an RGB file to a paletted file, or if a paletted
file has more entries then will fit on your screen, png_set_quantize()
-will do that. Note that this is a simple match dither that merely
+will do that. Note that this is a simple match quantization that merely
finds the closest color available. This should work fairly well with
-optimized palettes, and fairly badly with linear color cubes. If you
-pass a palette that is larger then maximum_colors, the file will
+optimized palettes, but fairly badly with linear color cubes. If you
+pass a palette that is larger than maximum_colors, the file will
reduce the number of colors in the palette so it will fit into
-maximum_colors. If there is a histogram, it will use it to make
+maximum_colors. If there is a histogram, libpng will use it to make
more intelligent choices when reducing the palette. If there is no
histogram, it may not do as good a job.
if (color_type & PNG_COLOR_MASK_COLOR)
{
if (png_get_valid(png_ptr, info_ptr,
- PNG_INFO_PLTE))
+ PNG_INFO_PLTE))
{
png_uint_16p histogram = NULL;
+
png_get_hIST(png_ptr, info_ptr,
- &histogram);
+ &histogram);
png_set_quantize(png_ptr, palette, num_palette,
max_screen_colors, histogram, 1);
}
+
else
{
png_color std_color_cube[MAX_SCREEN_COLORS] =
@@ -2104,16 +2801,16 @@
This function can also be used to invert grayscale and gray-alpha images:
if (color_type == PNG_COLOR_TYPE_GRAY ||
- color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
png_set_invert_mono(png_ptr);
-PNG files store 16 bit pixels in network byte order (big-endian,
+PNG files store 16-bit pixels in network byte order (big-endian,
ie. most significant bits first). This code changes the storage to the
other way (little-endian, i.e. least significant bits first, the
way PCs store them):
if (bit_depth == 16)
- png_set_swap(png_ptr);
+ png_set_swap(png_ptr);
If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
need to change the order the pixels are packed into bytes, you can use:
@@ -2126,7 +2823,7 @@
with
png_set_read_user_transform_fn(png_ptr,
- read_transform_fn);
+ read_transform_fn);
You must supply the function
@@ -2134,7 +2831,28 @@
row_info, png_bytep data)
See pngtest.c for a working example. Your function will be called
-after all of the other transformations have been processed.
+after all of the other transformations have been processed. Take care with
+interlaced images if you do the interlace yourself - the width of the row is the
+width in 'row_info', not the overall image width.
+
+If supported, libpng provides two information routines that you can use to find
+where you are in processing the image:
+
+ png_get_current_pass_number(png_structp png_ptr);
+ png_get_current_row_number(png_structp png_ptr);
+
+Don't try using these outside a transform callback - firstly they are only
+supported if user transforms are supported, secondly they may well return
+unexpected results unless the row is actually being processed at the moment they
+are called.
+
+With interlaced
+images the value returned is the row in the input sub-image image. Use
+PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
+find the output pixel (x,y) given an interlaced sub-image pixel (row,col,pass).
+
+The discussion of interlace handling above contains more information on how to
+use these values.
You can also set up a pointer to a user structure for use by your
callback function, and you can inform libpng that your transform
@@ -2142,7 +2860,7 @@
function
png_set_user_transform_info(png_ptr, user_ptr,
- user_depth, user_channels);
+ user_depth, user_channels);
The user's application, not libpng, is responsible for allocating and
freeing any memory required for the user structure.
@@ -2151,7 +2869,7 @@
png_get_user_transform_ptr(). For example:
voidp read_user_transform_ptr =
- png_get_user_transform_ptr(png_ptr);
+ png_get_user_transform_ptr(png_ptr);
The last thing to handle is interlacing; this is covered in detail below,
but you must call the function here if you want libpng to handle expansion
@@ -2161,13 +2879,16 @@
After setting the transformations, libpng can update your png_info
structure to reflect any transformations you've requested with this
-call. This is most useful to update the info structure's rowbytes
-field so you can use it to allocate your image memory. This function
-will also update your palette with the correct screen_gamma and
-background if these have been given with the calls above.
+call.
png_read_update_info(png_ptr, info_ptr);
+This is most useful to update the info structure's rowbytes
+field so you can use it to allocate your image memory. This function
+will also update your palette with the correct screen_gamma and
+background if these have been given with the calls above. You may
+only call png_read_update_info() once with a particular info_ptr.
+
After you call png_read_update_info(), you can allocate any
memory you need to hold the image. The row data is simply
raw byte data for all forms of images. As the actual allocation
@@ -2176,6 +2897,15 @@
array of pointers to each row, as it will be needed for some
of the functions below.
+Remember: Before you call png_read_update_info(), the png_get_*()
+functions return the values corresponding to the original PNG image.
+After you call png_read_update_info the values refer to the image
+that libpng will output. Consequently you must call all the png_set_
+functions before you call png_read_update_info(). This is particularly
+important for png_set_interlace_handling() - if you are going to call
+png_read_update_info() you must call png_set_interlace_handling() before
+it unless you want to receive interlaced output.
+
.SS Reading image data
After you've allocated memory, you can read the image data.
@@ -2185,9 +2915,10 @@
and put it in the memory area supplied. You will need to pass in
an array of pointers to each row.
-This function automatically handles interlacing, so you don't need
-to call png_set_interlace_handling() or call this function multiple
-times, or any of that other stuff necessary with png_read_rows().
+This function automatically handles interlacing, so you don't
+need to call png_set_interlace_handling() (unless you call
+png_read_update_info()) or call this function multiple times, or any
+of that other stuff necessary with png_read_rows().
png_read_image(png_ptr, row_pointers);
@@ -2202,7 +2933,7 @@
interlace_type == PNG_INTERLACE_NONE), this is simple:
png_read_rows(png_ptr, row_pointers, NULL,
- number_of_rows);
+ number_of_rows);
where row_pointers is the same as in the png_read_image() call.
@@ -2214,13 +2945,15 @@
If the file is interlaced (interlace_type != 0 in the IHDR chunk), things
get somewhat harder. The only current (PNG Specification version 1.2)
-interlacing type for PNG is (interlace_type == PNG_INTERLACE_ADAM7)
-is a somewhat complicated 2D interlace scheme, known as Adam7, that
+interlacing type for PNG is (interlace_type == PNG_INTERLACE_ADAM7);
+a somewhat complicated 2D interlace scheme, known as Adam7, that
breaks down an image into seven smaller images of varying size, based
-on an 8x8 grid.
+on an 8x8 grid. This number is defined (from libpng 1.5) as
+PNG_INTERLACE_ADAM7_PASSES in png.h
libpng can fill out those images or it can give them to you "as is".
-If you want them filled out, there are two ways to do that. The one
+It is almost always better to have libpng handle the interlacing for you.
+If you want the images filled out, there are two ways to do that. The one
mentioned in the PNG specification is to expand each pixel to cover
those pixels that have not been read yet (the "rectangle" method).
This results in a blocky image for the first pass, which gradually
@@ -2230,37 +2963,20 @@
before the start of the read. The first method usually looks better,
but tends to be slower, as there are more pixels to put in the rows.
-If you don't want libpng to handle the interlacing details, just call
-png_read_rows() seven times to read in all seven images. Each of the
-images is a valid image by itself, or they can all be combined on an
-8x8 grid to form a single image (although if you intend to combine them
-you would be far better off using the libpng interlace handling).
-
-The first pass will return an image 1/8 as wide as the entire image
-(every 8th column starting in column 0) and 1/8 as high as the original
-(every 8th row starting in row 0), the second will be 1/8 as wide
-(starting in column 4) and 1/8 as high (also starting in row 0). The
-third pass will be 1/4 as wide (every 4th pixel starting in column 0) and
-1/8 as high (every 8th row starting in row 4), and the fourth pass will
-be 1/4 as wide and 1/4 as high (every 4th column starting in column 2,
-and every 4th row starting in row 0). The fifth pass will return an
-image 1/2 as wide, and 1/4 as high (starting at column 0 and row 2),
-while the sixth pass will be 1/2 as wide and 1/2 as high as the original
-(starting in column 1 and row 0). The seventh and final pass will be as
-wide as the original, and 1/2 as high, containing all of the odd
-numbered scanlines. Phew!
-
-If you want libpng to expand the images, call this before calling
-png_start_read_image() or png_read_update_info():
+If, as is likely, you want libpng to expand the images, call this before
+calling png_start_read_image() or png_read_update_info():
if (interlace_type == PNG_INTERLACE_ADAM7)
- number_of_passes
+ number_of_passes
= png_set_interlace_handling(png_ptr);
-This will return the number of passes needed. Currently, this
-is seven, but may change if another interlace type is added.
-This function can be called even if the file is not interlaced,
-where it will return one pass.
+This will return the number of passes needed. Currently, this is seven,
+but may change if another interlace type is added. This function can be
+called even if the file is not interlaced, where it will return one pass.
+You then need to read the whole image 'number_of_passes' times. Each time
+will distribute the pixels from the current pass to the correct place in
+the output image, so you need to supply the same rows to png_read_rows in
+each pass.
If you are not going to display the image after each pass, but are
going to wait until the entire image is read in, use the sparkle
@@ -2277,14 +2993,104 @@
pass, and assumes the data from previous passes is still valid.
png_read_rows(png_ptr, row_pointers, NULL,
- number_of_rows);
+ number_of_rows);
If you only want the first effect (the rectangles), do the same as
before except pass the row buffer in the third parameter, and leave
the second parameter NULL.
png_read_rows(png_ptr, NULL, row_pointers,
- number_of_rows);
+ number_of_rows);
+
+If you don't want libpng to handle the interlacing details, just call
+png_read_rows() PNG_INTERLACE_ADAM7_PASSES times to read in all the images.
+Each of the images is a valid image by itself, however you will almost
+certainly need to distribute the pixels from each sub-image to the
+correct place. This is where everything gets very tricky.
+
+If you want to retrieve the separate images you must pass the correct
+number of rows to each successive call of png_read_rows(). The calculation
+gets pretty complicated for small images, where some sub-images may
+not even exist because either their width or height ends up zero.
+libpng provides two macros to help you in 1.5 and later versions:
+
+ png_uint_32 width = PNG_PASS_COLS(image_width, pass_number);
+ png_uint_32 height = PNG_PASS_ROWS(image_height, pass_number);
+
+Respectively these tell you the width and height of the sub-image
+corresponding to the numbered pass. 'pass' is in in the range 0 to 6 -
+this can be confusing because the specification refers to the same passes
+as 1 to 7! Be careful, you must check both the width and height before
+calling png_read_rows() and not call it for that pass if either is zero.
+
+You can, of course, read each sub-image row by row. If you want to
+produce optimal code to make a pixel-by-pixel transformation of an
+interlaced image this is the best approach; read each row of each pass,
+transform it, and write it out to a new interlaced image.
+
+If you want to de-interlace the image yourself libpng provides further
+macros to help that tell you where to place the pixels in the output image.
+Because the interlacing scheme is rectangular - sub-image pixels are always
+arranged on a rectangular grid - all you need to know for each pass is the
+starting column and row in the output image of the first pixel plus the
+spacing between each pixel. As of libpng 1.5 there are four macros to
+retrieve this information:
+
+ png_uint_32 x = PNG_PASS_START_COL(pass);
+ png_uint_32 y = PNG_PASS_START_ROW(pass);
+ png_uint_32 xStep = 1U << PNG_PASS_COL_SHIFT(pass);
+ png_uint_32 yStep = 1U << PNG_PASS_ROW_SHIFT(pass);
+
+These allow you to write the obvious loop:
+
+ png_uint_32 input_y = 0;
+ png_uint_32 output_y = PNG_PASS_START_ROW(pass);
+
+ while (output_y < output_image_height)
+ {
+ png_uint_32 input_x = 0;
+ png_uint_32 output_x = PNG_PASS_START_COL(pass);
+
+ while (output_x < output_image_width)
+ {
+ image[output_y][output_x] =
+ subimage[pass][input_y][input_x++];
+
+ output_x += xStep;
+ }
+
+ ++input_y;
+ output_y += yStep;
+ }
+
+Notice that the steps between successive output rows and columns are
+returned as shifts. This is possible because the pixels in the subimages
+are always a power of 2 apart - 1, 2, 4 or 8 pixels - in the original
+image. In practice you may need to directly calculate the output coordinate
+given an input coordinate. libpng provides two further macros for this
+purpose:
+
+ png_uint_32 output_x = PNG_COL_FROM_PASS_COL(input_x, pass);
+ png_uint_32 output_y = PNG_ROW_FROM_PASS_ROW(input_y, pass);
+
+Finally a pair of macros are provided to tell you if a particular image
+row or column appears in a given pass:
+
+ int col_in_pass = PNG_COL_IN_INTERLACE_PASS(output_x, pass);
+ int row_in_pass = PNG_ROW_IN_INTERLACE_PASS(output_y, pass);
+
+Bear in mind that you will probably also need to check the width and height
+of the pass in addition to the above to be sure the pass even exists!
+
+With any luck you are convinced by now that you don't want to do your own
+interlace handling. In reality normally the only good reason for doing this
+is if you are processing PNG files on a pixel-by-pixel basis and don't want
+to load the whole file into memory when it is interlaced.
+
+libpng includes a test program, pngvalid, that illustrates reading and
+writing of interlaced images. If you can't get interlacing to work in your
+code and don't want to leave it to libpng (the recommended approach), see
+how pngvalid.c does it.
.SS Finishing a sequential read
@@ -2293,19 +3099,44 @@
interested in comments or time, which may be stored either before or
after the image data, you should pass the separate png_info struct if
you want to keep the comments from before and after the image
-separate. If you are not interested, you can pass NULL.
+separate.
+
+ png_infop end_info = png_create_info_struct(png_ptr);
+
+ if (!end_info)
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
png_read_end(png_ptr, end_info);
+If you are not interested, you should still call png_read_end()
+but you can pass NULL, avoiding the need to create an end_info structure.
+
+ png_read_end(png_ptr, (png_infop)NULL);
+
+If you don't call png_read_end(), then your file pointer will be
+left pointing to the first chunk after the last IDAT, which is probably
+not what you want if you expect to read something beyond the end of
+the PNG datastream.
+
When you are done, you can free all memory allocated by libpng like this:
png_destroy_read_struct(&png_ptr, &info_ptr,
&end_info);
+or, if you didn't create an end_info structure,
+
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+
It is also possible to individually free the info_ptr members that
point to libpng-allocated storage with the following function:
png_free_data(png_ptr, info_ptr, mask, seq)
+
mask - identifies data to be freed, a mask
containing the bitwise OR of one or
more of
@@ -2315,6 +3146,7 @@
PNG_FREE_SCAL, PNG_FREE_SPLT,
PNG_FREE_TEXT, PNG_FREE_UNKN,
or simply PNG_FREE_ALL
+
seq - sequence number of item to be freed
(-1 for all items)
@@ -2332,13 +3164,15 @@
or png_zalloc() and passed in via a png_set_*() function, with
png_data_freer(png_ptr, info_ptr, freer, mask)
- mask - which data elements are affected
- same choices as in png_free_data()
+
freer - one of
PNG_DESTROY_WILL_FREE_DATA
PNG_SET_WILL_FREE_DATA
PNG_USER_WILL_FREE_DATA
+ mask - which data elements are affected
+ same choices as in png_free_data()
+
This function only affects data that has already been allocated.
You can call this function after reading the PNG data but before calling
any png_set_*() functions, to control whether the user or the png_set_*()
@@ -2367,6 +3201,7 @@
your application instead of by libpng, you can use
png_set_invalid(png_ptr, info_ptr, mask);
+
mask - identifies the chunks to be made invalid,
containing the bitwise OR of one or
more of
@@ -2406,21 +3241,24 @@
png_ptr = png_create_read_struct
(PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
user_error_fn, user_warning_fn);
+
if (!png_ptr)
return (ERROR);
+
info_ptr = png_create_info_struct(png_ptr);
+
if (!info_ptr)
{
- png_destroy_read_struct(&png_ptr, (png_infopp)NULL,
- (png_infopp)NULL);
- return (ERROR);
+ png_destroy_read_struct(&png_ptr,
+ (png_infopp)NULL, (png_infopp)NULL);
+ return (ERROR);
}
if (setjmp(png_jmpbuf(png_ptr)))
{
- png_destroy_read_struct(&png_ptr, &info_ptr,
- (png_infopp)NULL);
- return (ERROR);
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
}
/* This one's new. You can provide functions
@@ -2452,9 +3290,9 @@
{
if (setjmp(png_jmpbuf(png_ptr)))
{
- png_destroy_read_struct(&png_ptr, &info_ptr,
+ png_destroy_read_struct(&png_ptr, &info_ptr,
(png_infopp)NULL);
- return (ERROR);
+ return (ERROR);
}
/* This one's new also. Simply give it a chunk
@@ -2471,6 +3309,12 @@
so there.
*/
png_process_data(png_ptr, info_ptr, buffer, length);
+
+ /* At this point you can call png_process_data_skip if
+ you want to handle data the library will skip yourself;
+ it simply returns the number of bytes to skip (and stops
+ libpng skipping that number of bytes on the next
+ png_process_data call).
return 0;
}
@@ -2491,6 +3335,19 @@
any). You may start getting rows before
png_process_data() returns, so this is your
last chance to prepare for that.
+
+ This is where you turn on interlace handling,
+ assuming you don't want to do it yourself.
+
+ If you need to you can stop the processing of
+ your original input data at this point by calling
+ png_process_data_pause. This returns the number
+ of unprocessed bytes from the last png_process_data
+ call - it is up to you to ensure that the next call
+ sees these bytes again. If you don't want to bother
+ with this you can get libpng to cache the unread
+ bytes by setting the 'save' parameter (see png.h) but
+ then libpng will have to copy the data internally.
*/
}
@@ -2511,14 +3368,22 @@
supplying them because it may make your life
easier.
- For the non-NULL rows of interlaced images,
+ If you did not turn on interlace handling then
+ the callback is called for each row of each
+ sub-image when the image is interlaced. In this
+ case 'row_num' is the row in the sub-image, not
+ the row in the output image as it is in all other
+ cases.
+
+ For the non-NULL rows of interlaced images when
+ you have switched on libpng interlace handling,
you must call png_progressive_combine_row()
passing in the row and the old row. You can
call this function for NULL rows (it will just
return) and for non-interlaced images (it just
does the memcpy for you) if it will make the
code easier. Thus, you can just do this for
- all cases:
+ all cases if you switch on interlace handling;
*/
png_progressive_combine_row(png_ptr, old_row,
@@ -2532,6 +3397,9 @@
for interlaced images), you will have to pass
the current row, and the function will combine
the old row and the new row.
+
+ You can also call png_process_data_pause in this
+ callback - see above.
*/
}
@@ -2566,10 +3434,9 @@
custom writing functions. See the discussion under Customizing libpng.
FILE *fp = fopen(file_name, "wb");
+
if (!fp)
- {
return (ERROR);
- }
Next, png_struct and png_info need to be allocated and initialized.
As these can be both relatively large, you may not want to store these
@@ -2582,6 +3449,7 @@
png_structp png_ptr = png_create_write_struct
(PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
user_error_fn, user_warning_fn);
+
if (!png_ptr)
return (ERROR);
@@ -2589,7 +3457,7 @@
if (!info_ptr)
{
png_destroy_write_struct(&png_ptr,
- (png_infopp)NULL);
+ (png_infopp)NULL);
return (ERROR);
}
@@ -2615,7 +3483,7 @@
if (setjmp(png_jmpbuf(png_ptr)))
{
- png_destroy_write_struct(&png_ptr, &info_ptr);
+ png_destroy_write_struct(&png_ptr, &info_ptr);
fclose(fp);
return (ERROR);
}
@@ -2666,6 +3534,20 @@
png_set_write_status_fn(png_ptr, write_row_callback);
+When this function is called the row has already been completely processed and
+it has also been written out. The 'row' and 'pass' refer to the next row to be
+handled. For the
+non-interlaced case the row that was just handled is simply one less than the
+passed in row number, and pass will always be 0. For the interlaced case the
+same applies unless the row value is 0, in which case the row just handled was
+the last one from one of the preceding passes. Because interlacing may skip a
+pass you cannot be sure that the preceding pass is just 'pass-1', if you really
+need to know what the last pass is record (row,pass) from the callback and use
+the last recorded value each time.
+
+As with the user transform you can find the output row using the
+PNG_ROW_FROM_PASS_ROW macro.
+
You now have the option of modifying how the compression library will
run. The following functions are mainly for testing, but may be useful
in some cases, like if you need to write PNG files extremely fast and
@@ -2685,7 +3567,8 @@
/* turn on or off filtering, and/or choose
specific filters. You can use either a single
PNG_FILTER_VALUE_NAME or the bitwise OR of one
- or more PNG_FILTER_NAME masks. */
+ or more PNG_FILTER_NAME masks.
+ */
png_set_filter(png_ptr, 0,
PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE |
PNG_FILTER_SUB | PNG_FILTER_VALUE_SUB |
@@ -2694,11 +3577,10 @@
PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH|
PNG_ALL_FILTERS);
-If an application
-wants to start and stop using particular filters during compression,
-it should start out with all of the filters (to ensure that the previous
-row of pixels will be stored in case it's needed later), and then add
-and remove them after the start of compression.
+If an application wants to start and stop using particular filters during
+compression, it should start out with all of the filters (to ensure that
+the previous row of pixels will be stored in case it's needed later),
+and then add and remove them after the start of compression.
If you are writing a PNG datastream that is to be embedded in a MNG
datastream, the second parameter can be either 0 or 64.
@@ -2710,11 +3592,13 @@
data. See the Compression Library (zlib.h and algorithm.txt, distributed
with zlib) for details on the compression levels.
- /* set the zlib compression level */
+ #include zlib.h
+
+ /* Set the zlib compression level */
png_set_compression_level(png_ptr,
Z_BEST_COMPRESSION);
- /* set other zlib parameters */
+ /* Set other zlib parameters for compressing IDAT */
png_set_compression_mem_level(png_ptr, 8);
png_set_compression_strategy(png_ptr,
Z_DEFAULT_STRATEGY);
@@ -2722,7 +3606,15 @@
png_set_compression_method(png_ptr, 8);
png_set_compression_buffer_size(png_ptr, 8192)
-extern PNG_EXPORT(void,png_set_zbuf_size)
+ /* Set zlib parameters for text compression
+ * If you don't call these, the parameters
+ * fall back on those defined for IDAT chunks
+ */
+ png_set_text_compression_mem_level(png_ptr, 8);
+ png_set_text_compression_strategy(png_ptr,
+ Z_DEFAULT_STRATEGY);
+ png_set_text_compression_window_bits(png_ptr, 15);
+ png_set_text_compression_method(png_ptr, 8);
.SS Setting the contents of info for output
@@ -2742,16 +3634,20 @@
png_set_IHDR(png_ptr, info_ptr, width, height,
bit_depth, color_type, interlace_type,
compression_type, filter_method)
+
width - holds the width of the image
in pixels (up to 2^31).
+
height - holds the height of the image
in pixels (up to 2^31).
+
bit_depth - holds the bit depth of one of the
image channels.
(valid values are 1, 2, 4, 8, 16
and depend also on the
color_type. See also significant
bits (sBIT) below).
+
color_type - describes which color/alpha
channels are present.
PNG_COLOR_TYPE_GRAY
@@ -2771,8 +3667,10 @@
interlace_type - PNG_INTERLACE_NONE or
PNG_INTERLACE_ADAM7
+
compression_type - (must be
PNG_COMPRESSION_TYPE_DEFAULT)
+
filter_method - (must be PNG_FILTER_TYPE_DEFAULT
or, if you are writing a PNG to
be embedded in a MNG datastream,
@@ -2790,15 +3688,44 @@
png_set_PLTE(png_ptr, info_ptr, palette,
num_palette);
+
palette - the palette for the file
(array of png_color)
num_palette - number of entries in the palette
- png_set_gAMA(png_ptr, info_ptr, gamma);
- gamma - the gamma the image was created
- at (PNG_INFO_gAMA)
+ png_set_gAMA(png_ptr, info_ptr, file_gamma);
+ png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma);
+
+ file_gamma - the gamma at which the image was
+ created (PNG_INFO_gAMA)
+
+ int_file_gamma - 100,000 times the gamma at which
+ the image was created
+
+ png_set_cHRM(png_ptr, info_ptr, white_x, white_y, red_x, red_y,
+ green_x, green_y, blue_x, blue_y)
+ png_set_cHRM_XYZ(png_ptr, info_ptr, red_X, red_Y, red_Z, green_X,
+ green_Y, green_Z, blue_X, blue_Y, blue_Z)
+ png_set_cHRM_fixed(png_ptr, info_ptr, int_white_x, int_white_y,
+ int_red_x, int_red_y, int_green_x, int_green_y,
+ int_blue_x, int_blue_y)
+ png_set_cHRM_XYZ_fixed(png_ptr, info_ptr, int_red_X, int_red_Y,
+ int_red_Z, int_green_X, int_green_Y, int_green_Z,
+ int_blue_X, int_blue_Y, int_blue_Z)
+
+ {white,red,green,blue}_{x,y}
+ A color space encoding specified using the chromaticities
+ of the end points and the white point.
+
+ {red,green,blue}_{X,Y,Z}
+ A color space encoding specified using the encoding end
+ points - the CIE tristimulus specification of the intended
+ color of the red, green and blue channels in the PNG RGB
+ data. The white point is simply the sum of the three end
+ points.
png_set_sRGB(png_ptr, info_ptr, srgb_intent);
+
srgb_intent - the rendering intent
(PNG_INFO_sRGB) The presence of
the sRGB chunk means that the pixel
@@ -2818,6 +3745,7 @@
png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr,
srgb_intent);
+
srgb_intent - the rendering intent
(PNG_INFO_sRGB) The presence of the
sRGB chunk means that the pixel
@@ -2828,17 +3756,22 @@
written.
png_set_iCCP(png_ptr, info_ptr, name, compression_type,
- profile, proflen);
+ profile, proflen);
+
name - The profile name.
+
compression_type - The compression type; always
PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
You may give NULL to this argument to
ignore it.
+
profile - International Color Consortium color
profile data. May contain NULs.
+
proflen - length of profile data in bytes.
png_set_sBIT(png_ptr, info_ptr, sig_bit);
+
sig_bit - the number of significant bits for
(PNG_INFO_sBIT) each of the gray, red,
green, and blue channels, whichever are
@@ -2847,31 +3780,38 @@
png_set_tRNS(png_ptr, info_ptr, trans_alpha,
num_trans, trans_color);
+
trans_alpha - array of alpha (transparency)
entries for palette (PNG_INFO_tRNS)
+
+ num_trans - number of transparent entries
+ (PNG_INFO_tRNS)
+
trans_color - graylevel or color sample values
(in order red, green, blue) of the
single transparent color for
non-paletted images (PNG_INFO_tRNS)
- num_trans - number of transparent entries
- (PNG_INFO_tRNS)
png_set_hIST(png_ptr, info_ptr, hist);
- (PNG_INFO_hIST)
+
hist - histogram of palette (array of
- png_uint_16)
+ png_uint_16) (PNG_INFO_hIST)
png_set_tIME(png_ptr, info_ptr, mod_time);
+
mod_time - time image was last modified
(PNG_VALID_tIME)
png_set_bKGD(png_ptr, info_ptr, background);
+
background - background color (of type
png_color_16p) (PNG_VALID_bKGD)
png_set_text(png_ptr, info_ptr, text_ptr, num_text);
+
text_ptr - array of png_text holding image
comments
+
text_ptr[i].compression - type of compression used
on "text" PNG_TEXT_COMPRESSION_NONE
PNG_TEXT_COMPRESSION_zTXt
@@ -2889,14 +3829,21 @@
empty for unknown).
text_ptr[i].translated_keyword - keyword in UTF-8 (NULL
or empty for unknown).
+
Note that the itxt_length, lang, and lang_key
- members of the text_ptr structure only exist
- when the library is built with iTXt chunk support.
+ members of the text_ptr structure only exist when the
+ library is built with iTXt chunk support. Prior to
+ libpng-1.4.0 the library was built by default without
+ iTXt support. Also note that when iTXt is supported,
+ they contain NULL pointers when the "compression"
+ field contains PNG_TEXT_COMPRESSION_NONE or
+ PNG_TEXT_COMPRESSION_zTXt.
num_text - number of comments
png_set_sPLT(png_ptr, info_ptr, &palette_ptr,
num_spalettes);
+
palette_ptr - array of png_sPLT_struct structures
to be added to the list of palettes
in the info structure.
@@ -2905,35 +3852,49 @@
png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y,
unit_type);
+
offset_x - positive offset from the left
edge of the screen
+
offset_y - positive offset from the top
edge of the screen
+
unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
png_set_pHYs(png_ptr, info_ptr, res_x, res_y,
unit_type);
+
res_x - pixels/unit physical resolution
in x direction
+
res_y - pixels/unit physical resolution
in y direction
+
unit_type - PNG_RESOLUTION_UNKNOWN,
PNG_RESOLUTION_METER
png_set_sCAL(png_ptr, info_ptr, unit, width, height)
+
unit - physical scale units (an integer)
+
width - width of a pixel in physical scale units
+
height - height of a pixel in physical scale units
(width and height are doubles)
png_set_sCAL_s(png_ptr, info_ptr, unit, width, height)
+
unit - physical scale units (an integer)
+
width - width of a pixel in physical scale units
+ expressed as a string
+
height - height of a pixel in physical scale units
(width and height are strings like "2.54")
png_set_unknown_chunks(png_ptr, info_ptr, &unknowns,
num_unknowns)
+
unknowns - array of png_unknown_chunk
structures holding unknown chunks
unknowns[i].name - name of unknown chunk
@@ -2968,25 +3929,34 @@
specify PNG_TEXT_COMPRESSION_NONE or PNG_TEXT_COMPRESSION_zTXt
any language code or translated keyword will not be written out.
-Until text gets around 1000 bytes, it is not worth compressing it.
+Until text gets around a few hundred bytes, it is not worth compressing it.
After the text has been written out to the file, the compression type
is set to PNG_TEXT_COMPRESSION_NONE_WR or PNG_TEXT_COMPRESSION_zTXt_WR,
so that it isn't written out again at the end (in case you are calling
-png_write_end() with the same struct.
+png_write_end() with the same struct).
The keywords that are given in the PNG Specification are:
Title Short (one line) title or
caption for image
+
Author Name of image's creator
+
Description Description of image (possibly long)
+
Copyright Copyright notice
+
Creation Time Time of original image creation
(usually RFC 1123 format, see below)
+
Software Software used to create the image
+
Disclaimer Legal disclaimer
+
Warning Warning of nature of content
+
Source Device used to create the image
+
Comment Miscellaneous comment; conversion
from other image format
@@ -3156,17 +4126,19 @@
/* Set the true bit depth of the image data */
if (color_type & PNG_COLOR_MASK_COLOR)
{
- sig_bit.red = true_bit_depth;
- sig_bit.green = true_bit_depth;
- sig_bit.blue = true_bit_depth;
+ sig_bit.red = true_bit_depth;
+ sig_bit.green = true_bit_depth;
+ sig_bit.blue = true_bit_depth;
}
+
else
{
- sig_bit.gray = true_bit_depth;
+ sig_bit.gray = true_bit_depth;
}
+
if (color_type & PNG_COLOR_MASK_ALPHA)
{
- sig_bit.alpha = true_bit_depth;
+ sig_bit.alpha = true_bit_depth;
}
png_set_sBIT(png_ptr, info_ptr, &sig_bit);
@@ -3178,7 +4150,7 @@
png_set_shift(png_ptr, &sig_bit);
-PNG files store 16 bit pixels in network byte order (big-endian,
+PNG files store 16-bit pixels in network byte order (big-endian,
ie. most significant bits first). This code would be used if they are
supplied the other way (little-endian, i.e. least significant bits
first, the way PCs store them):
@@ -3216,7 +4188,20 @@
row_info, png_bytep data)
See pngtest.c for a working example. Your function will be called
-before any of the other transformations are processed.
+before any of the other transformations are processed. If supported
+libpng also supplies an information routine that may be called from
+your callback:
+
+ png_get_current_row_number(png_ptr);
+ png_get_current_pass_number(png_ptr);
+
+This returns the current row passed to the transform. With interlaced
+images the value returned is the row in the input sub-image image. Use
+PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
+find the output pixel (x,y) given an interlaced sub-image pixel (row,col,pass).
+
+The discussion of interlace handling above contains more information on how to
+use these values.
You can also set up a pointer to a user structure for use by your
callback function.
@@ -3298,25 +4283,39 @@
If you don't want libpng to handle the interlacing details, just
use png_set_interlace_handling() and call png_write_rows() the
-correct number of times to write all seven sub-images.
+correct number of times to write all the sub-images
+(png_set_interlace_handling() returns the number of sub-images.)
If you want libpng to build the sub-images, call this before you start
writing any rows:
- number_of_passes =
- png_set_interlace_handling(png_ptr);
+ number_of_passes = png_set_interlace_handling(png_ptr);
This will return the number of passes needed. Currently, this is seven,
but may change if another interlace type is added.
Then write the complete image number_of_passes times.
- png_write_rows(png_ptr, row_pointers,
- number_of_rows);
+ png_write_rows(png_ptr, row_pointers, number_of_rows);
-As some of these rows are not used, and thus return immediately, you may
-want to read about interlacing in the PNG specification, and only update
-the rows that are actually used.
+Think carefully before you write an interlaced image. Typically code that
+reads such images reads all the image data into memory, uncompressed, before
+doing any processing. Only code that can display an image on the fly can
+take advantage of the interlacing and even then the image has to be exactly
+the correct size for the output device, because scaling an image requires
+adjacent pixels and these are not available until all the passes have been
+read.
+
+If you do write an interlaced image you will hardly ever need to handle
+the interlacing yourself. Call png_set_interlace_handling() and use the
+approach described above.
+
+The only time it is conceivable that you will really need to write an
+interlaced image pass-by-pass is when you have read one pass by pass and
+made some pixel-by-pixel transformation to it, as described in the read
+code above. In this case use the PNG_PASS_ROWS and PNG_PASS_COLS macros
+to determine the size of each sub-image in turn and simply write the rows
+you obtained from the read code.
.SS Finishing a sequential write
@@ -3335,6 +4334,7 @@
point to libpng-allocated storage with the following function:
png_free_data(png_ptr, info_ptr, mask, seq)
+
mask - identifies data to be freed, a mask
containing the bitwise OR of one or
more of
@@ -3344,6 +4344,7 @@
PNG_FREE_SCAL, PNG_FREE_SPLT,
PNG_FREE_TEXT, PNG_FREE_UNKN,
or simply PNG_FREE_ALL
+
seq - sequence number of item to be freed
(-1 for all items)
@@ -3365,19 +4366,22 @@
or png_zalloc() and passed in via a png_set_*() function, with
png_data_freer(png_ptr, info_ptr, freer, mask)
- mask - which data elements are affected
- same choices as in png_free_data()
+
freer - one of
PNG_DESTROY_WILL_FREE_DATA
PNG_SET_WILL_FREE_DATA
PNG_USER_WILL_FREE_DATA
+ mask - which data elements are affected
+ same choices as in png_free_data()
+
For example, to transfer responsibility for some data from a read structure
to a write structure, you could use
png_data_freer(read_ptr, read_info_ptr,
PNG_USER_WILL_FREE_DATA,
PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+
png_data_freer(write_ptr, write_info_ptr,
PNG_DESTROY_WILL_FREE_DATA,
PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
@@ -3424,9 +4428,11 @@
Memory allocation is done through the functions png_malloc(), png_calloc(),
and png_free(). These currently just call the standard C functions.
-png_calloc() calls png_malloc() and then png_memset() to clear the newly
-allocated memory to zero. If your pointers can't access more then 64K
-at a time, you will want to set MAXSEG_64K in zlib.h. Since it is
+png_calloc() calls png_malloc() and then clears the newly
+allocated memory to zero. There is limited support for certain systems
+with segmented memory architectures and the types of pointers declared by
+png.h match this; you will have to use appropriate pointers in your
+application. Since it is
unlikely that the method of handling memory allocation on a platform
will change between applications, these functions must be modified in
the library at compile time. If you prefer to use a different method
@@ -3441,6 +4447,7 @@
png_voidp malloc_fn(png_structp png_ptr,
png_alloc_size_t size);
+
void free_fn(png_structp png_ptr, png_voidp ptr);
Your malloc_fn() must return NULL in case of failure. The png_malloc()
@@ -3473,8 +4480,10 @@
void user_read_data(png_structp png_ptr,
png_bytep data, png_size_t length);
+
void user_write_data(png_structp png_ptr,
png_bytep data, png_size_t length);
+
void user_flush_data(png_structp png_ptr);
The user_read_data() function is responsible for detecting and
@@ -3519,6 +4528,7 @@
void user_error_fn(png_structp png_ptr,
png_const_charp error_msg);
+
void user_warning_fn(png_structp png_ptr,
png_const_charp warning_msg);
@@ -3560,7 +4570,7 @@
transformation to the one you want to add and copy off of it. More details
can be found in the comments inside the code itself.
-.SS Configuring for 16 bit platforms
+.SS Configuring for 16-bit platforms
You will want to look into zconf.h to tell zlib (and thus libpng) that
it cannot allocate more then 64K at a time. Even if you can, the memory
@@ -3580,8 +4590,8 @@
all set. Everything in the library (except for zlib's structure) is
expecting far data. You must use the typedefs with the p or pp on
the end for pointers (or at least look at them and be careful). Make
-note that the rows of data are defined as png_bytepp, which is an
-unsigned char far * far *.
+note that the rows of data are defined as png_bytepp, which is
+an "unsigned char far * far *".
.SS Configuring for gui/windowing platforms:
@@ -3599,7 +4609,11 @@
The includes that are not needed outside libpng are placed in pngpriv.h,
which is only used by the routines inside libpng itself.
The files in libpng proper only include pngpriv.h and png.h, which
-in turn includes pngconf.h.
+%14%in turn includes pngconf.h.
+in turn includes pngconf.h and, as of libpng-1.5.0, pnglibconf.h.
+As of libpng-1.5.0, pngpriv.h also includes three other private header
+files, pngstruct.h, pnginfo.h, and pngdebug.h, which contain material
+that previously appeared in the public headers.
.SS Configuring zlib:
@@ -3615,6 +4629,7 @@
files larger than just storing the raw bitmap. You can specify the
compression level by calling:
+ #include zlib.h
png_set_compression_level(png_ptr, level);
Another useful one is to reduce the memory level used by the library.
@@ -3625,19 +4640,43 @@
data being emitted in smaller stored blocks, with a correspondingly
larger relative overhead of up to 15% in the worst case.
+ #include zlib.h
png_set_compression_mem_level(png_ptr, level);
The other functions are for configuring zlib. They are not recommended
for normal use and may result in writing an invalid PNG file. See
zlib.h for more information on what these mean.
+ #include zlib.h
png_set_compression_strategy(png_ptr,
strategy);
+
png_set_compression_window_bits(png_ptr,
window_bits);
+
png_set_compression_method(png_ptr, method);
+
png_set_compression_buffer_size(png_ptr, size);
+As of libpng version 1.5.4, additional APIs became
+available to set these separately for non-IDAT
+compressed chunks such as zTXt, iTXt, and iCCP:
+
+ #include zlib.h
+ #if PNG_LIBPNG_VER <= 10504
+ png_set_text_compression_level(png_ptr, level);
+
+ png_set_text_compression_mem_level(png_ptr, level);
+
+ png_set_text_compression_strategy(png_ptr,
+ strategy);
+
+ png_set_text_compression_window_bits(png_ptr,
+ window_bits);
+
+ png_set_text_compression_method(png_ptr, method);
+ #endif
+
.SS Controlling row filtering
If you want to control whether libpng uses filtering or not, which
@@ -3724,6 +4763,8 @@
you can turn off individual capabilities with defines that begin with
PNG_NO_.
+In libpng-1.5.0 and later, the #define's are in pnglibconf.h instead.
+
You can also turn all of the transforms and ancillary chunk capabilities
off en masse with compiler directives that define
PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS,
@@ -3776,8 +4817,8 @@
is expanded to
- if(PNG_DEBUG > 2)
- fprintf(PNG_DEBUG_FILE, "foo=%d\n", foo);
+ if (PNG_DEBUG > 2)
+ fprintf(PNG_DEBUG_FILE, "foo=%d\n", foo);
When PNG_DEBUG is defined but is zero, the macros aren't defined, but you
can still use PNG_DEBUG to control your own debugging:
@@ -3798,11 +4839,13 @@
png_permit_mng_features() function:
feature_set = png_permit_mng_features(png_ptr, mask)
+
mask is a png_uint_32 containing the bitwise OR of the
features you want to enable. These include
PNG_FLAG_MNG_EMPTY_PLTE
PNG_FLAG_MNG_FILTER_64
PNG_ALL_MNG_FEATURES
+
feature_set is a png_uint_32 that is the bitwise AND of
your mask with the set of MNG features that is
supported by the version of libpng that you are using.
@@ -3827,7 +4870,7 @@
The old libpng functions png_read_init(), png_write_init(),
png_info_init(), png_read_destroy(), and png_write_destroy() have been
moved to PNG_INTERNAL in version 0.95 to discourage their use. These
-functions will be removed from libpng version 2.0.0.
+functions will be removed from libpng version 1.4.0.
The preferred method of creating and initializing the libpng structures is
via the png_create_read_struct(), png_create_write_struct(), and
@@ -3859,6 +4902,9 @@
version with leading zero, and release number with leading zero,
(e.g., libpng_vn for version 1.0.7 is 10007).
+Note that this function does not take a png_ptr, so you can call it
+before you've created one.
+
You can also check which version of png.h you used when compiling your
application:
@@ -4016,18 +5062,18 @@
png_set_asm_flags(), and png_mmx_supported()
We removed the obsolete png_check_sig(), png_memcpy_check(), and
-png_memset_check() functions. Instead use !png_sig_cmp(), png_memcpy(),
-and png_memset(), respectively.
+png_memset_check() functions. Instead use !png_sig_cmp(), memcpy(),
+and memset(), respectively.
The function png_set_gray_1_2_4_to_8() was removed. It has been
deprecated since libpng-1.0.18 and 1.2.9, when it was replaced with
png_set_expand_gray_1_2_4_to_8() because the former function also
-expanded palette images.
+expanded any tRNS chunk to an alpha channel.
Macros for png_get_uint_16, png_get_uint_32, and png_get_int_32
were added and are used by default instead of the corresponding
functions. Unfortunately,
-from libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
+from libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
function) incorrectly returned a value of type png_uint_32.
We changed the prototype for png_malloc() from
@@ -4038,7 +5084,7 @@
This also applies to the prototype for the user replacement malloc_fn().
The png_calloc() function was added and is used in place of
-of "png_malloc(); png_memset();" except in the case in png_read_png()
+of "png_malloc(); memset();" except in the case in png_read_png()
where the array consists of pointers; in this case a "for" loop is used
after the png_malloc() to set the pointers to NULL, to give robust.
behavior in case the application runs out of memory part-way through
@@ -4064,11 +5110,301 @@
was reenabled, but the function was renamed png_set_quantize() to
reflect more accurately what it actually does. At the same time,
the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros were also renamed to
-PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS.
+PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS, and PNG_READ_DITHER_SUPPORTED
+was renamed to PNG_READ_QUANTIZE_SUPPORTED.
We removed the trailing '.' from the warning and error messages.
-.SH X. Detecting libpng
+.SH X. Changes to Libpng from version 1.4.x to 1.5.x
+
+From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
+function) incorrectly returned a value of type png_uint_32.
+
+A. Changes that affect users of libpng
+
+There are no substantial API changes between the non-deprecated parts of
+the 1.4.5 API and the 1.5.0 API, however the ability to directly access
+the main libpng control structures, png_struct and png_info, deprecated
+in earlier versions of libpng, has been completely removed from
+libpng 1.5.
+
+We no longer include zlib.h in png.h. Applications that need access
+to information in zlib.h will need to add the '#include "zlib.h"'
+directive. It does not matter whether it is placed prior to or after
+the '"#include png.h"' directive.
+
+We moved the png_strcpy(), png_strncpy(), png_strlen(), png_memcpy(),
+png_memcmp(), png_sprintf, and png_memcpy() macros into a private
+header file (pngpriv.h) that is not accessible to applications.
+
+In png_get_iCCP, the type of "profile" was changed from png_charpp
+to png_bytepp, and in png_set_iCCP, from png_charp to png_const_bytep.
+
+There are changes of form in png.h, including new and changed macros to
+declare parts of the API. Some API functions with arguments that are
+pointers to data not modified within the function have been corrected to
+declare these arguments with PNG_CONST.
+
+Much of the internal use of C macros to control the library build has also
+changed and some of this is visible in the exported header files, in
+particular the use of macros to control data and API elements visible
+during application compilation may require significant revision to
+application code. (It is extremely rare for an application to do this.)
+
+Any program that compiled against libpng 1.4 and did not use deprecated
+features or access internal library structures should compile and work
+against libpng 1.5, except for the change in the prototype for
+png_get_iCCP() and png_set_iCCP() API functions mentioned above.
+
+libpng 1.5.0 adds PNG_ PASS macros to help in the reading and writing of
+interlaced images. The macros return the number of rows and columns in
+each pass and information that can be used to de-interlace and (if
+absolutely necessary) interlace an image.
+
+libpng 1.5.0 adds an API png_longjmp(png_ptr, value). This API calls
+the application-provided png_longjmp_ptr on the internal, but application
+initialized, longjmp buffer. It is provided as a convenience to avoid
+the need to use the png_jmpbuf macro, which had the unnecessary side
+effect of resetting the internal png_longjmp_ptr value.
+
+libpng 1.5.0 includes a complete fixed point API. By default this is
+present along with the corresponding floating point API. In general the
+fixed point API is faster and smaller than the floating point one because
+the PNG file format used fixed point, not floating point. This applies
+even if the library uses floating point in internal calculations. A new
+macro, PNG_FLOATING_ARITHMETIC_SUPPORTED, reveals whether the library
+uses floating point arithmetic (the default) or fixed point arithmetic
+internally for performance critical calculations such as gamma correction.
+In some cases, the gamma calculations may produce slightly different
+results. This has changed the results in png_rgb_to_gray and in alpha
+composition (png_set_background for example). This applies even if the
+original image was already linear (gamma == 1.0) and, therefore, it is
+not necessary to linearize the image. This is because libpng has *not*
+been changed to optimize that case correctly, yet.
+
+Fixed point support for the sCAL chunk comes with an important caveat;
+the sCAL specification uses a decimal encoding of floating point values
+and the accuracy of PNG fixed point values is insufficient for
+representation of these values. Consequently a "string" API
+(png_get_sCAL_s and png_set_sCAL_s) is the only reliable way of reading
+arbitrary sCAL chunks in the absence of either the floating point API or
+internal floating point calculations.
+
+Applications no longer need to include the optional distribution header
+file pngusr.h or define the corresponding macros during application
+build in order to see the correct variant of the libpng API. From 1.5.0
+application code can check for the corresponding _SUPPORTED macro:
+
+#ifdef PNG_INCH_CONVERSIONS_SUPPORTED
+ /* code that uses the inch conversion APIs. */
+#endif
+
+This macro will only be defined if the inch conversion functions have been
+compiled into libpng. The full set of macros, and whether or not support
+has been compiled in, are available in the header file pnglibconf.h.
+This header file is specific to the libpng build. Notice that prior to
+1.5.0 the _SUPPORTED macros would always have the default definition unless
+reset by pngusr.h or by explicit settings on the compiler command line.
+These settings may produce compiler warnings or errors in 1.5.0 because
+of macro redefinition.
+
+From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
+function) incorrectly returned a value of type png_uint_32. libpng 1.5.0
+is consistent with the implementation in 1.4.5 and 1.2.x (where the macro
+did not exist.)
+
+Applications can now choose whether to use these macros or to call the
+corresponding function by defining PNG_USE_READ_MACROS or
+PNG_NO_USE_READ_MACROS before including png.h. Notice that this is
+only supported from 1.5.0 -defining PNG_NO_USE_READ_MACROS prior to 1.5.0
+will lead to a link failure.
+
+Prior to libpng-1.5.4, the zlib compressor used the same set of parameters
+when compressing the IDAT data and textual data such as zTXt and iCCP.
+In libpng-1.5.4 we reinitialized the zlib stream for each type of data.
+We added five png_set_text_*() functions for setting the parameters to
+use with textual data.
+
+Prior to libpng-1.5.4, the PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+option was off by default, and slightly inaccurate scaling occurred.
+This option can no longer be turned off, and the choice of accurate
+or inaccurate 16-to-8 scaling is by using the new png_set_scale_16_to_8()
+API for accurate scaling or the old png_set_strip_16_to_8() API for simple
+chopping.
+
+Prior to libpng-1.5.4, the png_set_user_limits() function could only be
+used to reduce the width and height limits from the value of
+PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
+that it could be used to override them. Now this function will reduce or
+increase the limits.
+
+B. Changes to the build and configuration of libpng
+
+Details of internal changes to the library code can be found in the CHANGES
+file and in the GIT repository logs. These will be of no concern to the vast
+majority of library users or builders, however the few who configure libpng
+to a non-default feature set may need to change how this is done.
+
+There should be no need for library builders to alter build scripts if
+these use the distributed build support - configure or the makefiles -
+however users of the makefiles may care to update their build scripts
+to build pnglibconf.h where the corresponding makefile does not do so.
+
+Building libpng with a non-default configuration has changed completely.
+The old method using pngusr.h should still work correctly even though the
+way pngusr.h is used in the build has been changed; however, library
+builders will probably want to examine the changes to take advantage of
+new capabilities and to simplify their build system.
+
+B.1 Specific changes to library configuration capabilities
+
+The library now supports a complete fixed point implementation and can
+thus be used on systems that have no floating point support or very
+limited or slow support. Previously gamma correction, an essential part
+of complete PNG support, required reasonably fast floating point.
+
+As part of this the choice of internal implementation has been made
+independent of the choice of fixed versus floating point APIs and all the
+missing fixed point APIs have been implemented.
+
+The exact mechanism used to control attributes of API functions has
+changed. A single set of operating system independent macro definitions
+is used and operating system specific directives are defined in
+pnglibconf.h
+
+As part of this the mechanism used to choose procedure call standards on
+those systems that allow a choice has been changed. At present this only
+affects certain Microsoft (DOS, Windows) and IBM (OS/2) operating systems
+running on Intel processors. As before, PNGAPI is defined where required
+to control the exported API functions; however, two new macros, PNGCBAPI
+and PNGCAPI, are used instead for callback functions (PNGCBAPI) and
+(PNGCAPI) for functions that must match a C library prototype (currently
+only png_longjmp_ptr, which must match the C longjmp function.) The new
+approach is documented in pngconf.h
+
+Despite these changes, libpng 1.5.0 only supports the native C function
+calling standard on those platforms tested so far (__cdecl on Microsoft
+Windows). This is because the support requirements for alternative
+calling conventions seem to no longer exist. Developers who find it
+necessary to set PNG_API_RULE to 1 should advise the mailing list
+(png-mng-implement) of this and library builders who use Openwatcom and
+therefore set PNG_API_RULE to 2 should also contact the mailing list.
+
+A new test program, pngvalid, is provided in addition to pngtest.
+pngvalid validates the arithmetic accuracy of the gamma correction
+calculations and includes a number of validations of the file format.
+A subset of the full range of tests is run when "make check" is done
+(in the 'configure' build.) pngvalid also allows total allocated memory
+usage to be evaluated and performs additional memory overwrite validation.
+
+Many changes to individual feature macros have been made. The following
+are the changes most likely to be noticed by library builders who
+configure libpng:
+
+1) All feature macros now have consistent naming:
+
+#define PNG_NO_feature turns the feature off
+#define PNG_feature_SUPPORTED turns the feature on
+
+pnglibconf.h contains one line for each feature macro which is either:
+
+#define PNG_feature_SUPPORTED
+
+if the feature is supported or:
+
+/*#undef PNG_feature_SUPPORTED*/
+
+if it is not. Library code consistently checks for the 'SUPPORTED' macro.
+It does not, and libpng applications should not, check for the 'NO' macro
+which will not normally be defined even if the feature is not supported.
+The 'NO' macros are only used internally for setting or not setting the
+corresponding 'SUPPORTED' macros.
+
+Compatibility with the old names is provided as follows:
+
+PNG_INCH_CONVERSIONS turns on PNG_INCH_CONVERSIONS_SUPPORTED
+
+And the following definitions disable the corresponding feature:
+
+PNG_SETJMP_NOT_SUPPORTED disables SETJMP
+PNG_READ_TRANSFORMS_NOT_SUPPORTED disables READ_TRANSFORMS
+PNG_NO_READ_COMPOSITED_NODIV disables READ_COMPOSITE_NODIV
+PNG_WRITE_TRANSFORMS_NOT_SUPPORTED disables WRITE_TRANSFORMS
+PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED disables READ_ANCILLARY_CHUNKS
+PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED disables WRITE_ANCILLARY_CHUNKS
+
+Library builders should remove use of the above, inconsistent, names.
+
+2) Warning and error message formatting was previously conditional on
+the STDIO feature. The library has been changed to use the
+CONSOLE_IO feature instead. This means that if CONSOLE_IO is disabled
+the library no longer uses the printf(3) functions, even though the
+default read/write implementations use (FILE) style stdio.h functions.
+
+3) Three feature macros now control the fixed/floating point decisions:
+
+PNG_FLOATING_POINT_SUPPORTED enables the floating point APIs
+
+PNG_FIXED_POINT_SUPPORTED enables the fixed point APIs; however, in
+practice these are normally required internally anyway (because the PNG
+file format is fixed point), therefore in most cases PNG_NO_FIXED_POINT
+merely stops the function from being exported.
+
+PNG_FLOATING_ARITHMETIC_SUPPORTED chooses between the internal floating
+point implementation or the fixed point one. Typically the fixed point
+implementation is larger and slower than the floating point implementation
+on a system that supports floating point, however it may be faster on a
+system which lacks floating point hardware and therefore uses a software
+emulation.
+
+4) Added PNG_{READ,WRITE}_INT_FUNCTIONS_SUPPORTED. This allows the
+functions to read and write ints to be disabled independently of
+PNG_USE_READ_MACROS, which allows libpng to be built with the functions
+even though the default is to use the macros - this allows applications
+to choose at app buildtime whether or not to use macros (previously
+impossible because the functions weren't in the default build.)
+
+B.2 Changes to the configuration mechanism
+
+Prior to libpng-1.5.0 library builders who needed to configure libpng
+had either to modify the exported pngconf.h header file to add system
+specific configuration or had to write feature selection macros into
+pngusr.h and cause this to be included into pngconf.h by defining
+PNG_USER_CONFIG. The latter mechanism had the disadvantage that an
+application built without PNG_USER_CONFIG defined would see the
+unmodified, default, libpng API and thus would probably fail to link.
+
+These mechanisms still work in the configure build and in any makefile
+build that builds pnglibconf.h, although the feature selection macros
+have changed somewhat as described above. In 1.5.0, however, pngusr.h is
+processed only once, when the exported header file pnglibconf.h is built.
+pngconf.h no longer includes pngusr.h, therefore pngusr.h is ignored after the
+build of pnglibconf.h and it is never included in an application build.
+
+The rarely used alternative of adding a list of feature macros to the
+CFLAGS setting in the build also still works, however the macros will be
+copied to pnglibconf.h and this may produce macro redefinition warnings
+when the individual C files are compiled.
+
+All configuration now only works if pnglibconf.h is built from
+scripts/pnglibconf.dfa. This requires the program awk. Brian Kernighan
+(the original author of awk) maintains C source code of that awk and this
+and all known later implementations (often called by subtly different
+names - nawk and gawk for example) are adequate to build pnglibconf.h.
+The Sun Microsystems (now Oracle) program 'awk' is an earlier version
+and does not work; this may also apply to other systems that have a
+functioning awk called 'nawk'.
+
+Configuration options are now documented in scripts/pnglibconf.dfa. This
+file also includes dependency information that ensures a configuration is
+consistent; that is, if a feature is switched off dependent features are
+also removed. As a recommended alternative to using feature macros in
+pngusr.h a system builder may also define equivalent options in pngusr.dfa
+(or, indeed, any file) and add that to the configuration by setting
+DFA_XTRA to the file name. The makefiles in contrib/pngminim illustrate
+how to do this, and a case where pngusr.h is still required.
+
+.SH XI. Detecting libpng
The png_get_io_ptr() function has been present since libpng-0.88, has never
changed, and is unaffected by conditional compilation macros. It is the
@@ -4077,7 +5413,7 @@
AC_CHECK_LIB(png, png_get_io_ptr, ...
-.SH XI. Source code repository
+.SH XII. Source code repository
Since about February 2009, version 1.2.34, libpng has been under "git" source
control. The git repository was built from old libpng-x.y.z.tar.gz files
@@ -4096,7 +5432,12 @@
http://libpng.sourceforge.net
-.SH XII. Coding style
+We also accept patches built from the tar or zip distributions, and
+simple verbal discriptions of bug fixes, reported either to the
+SourceForge bug tracker, to the png-mng-implement at lists.sf.net
+mailing list, or directly to glennrp.
+
+.SH XIII. Coding style
Our coding style is similar to the "Allman" style, with curly
braces on separate lines:
@@ -4153,7 +5494,7 @@
exported functions are marked with PNGAPI:
/* This is a public function that is visible to
- * application programers. It does thus-and-so.
+ * application programmers. It does thus-and-so.
*/
void PNGAPI
png_exported_function(png_ptr, png_info, foo)
@@ -4187,7 +5528,7 @@
use libpng *not* begin any of their own symbols with either of these strings.
We put a space after each comma and after each semicolon
-in "for" statments, and we put spaces before and after each
+in "for" statements, and we put spaces before and after each
C binary operator and after "for" or "while", and before
"?". We don't put a space between a typecast and the expression
being cast, nor do we put one between a function name and the
@@ -4199,21 +5540,24 @@
We prefer #ifdef and #ifndef to #if defined() and if !defined()
when there is only one macro being tested.
+We prefer to express integers that are used as bit masks in hex format,
+with an even number of lower-case hex digits (e.g., 0x00, 0xff, 0x0100).
+
We do not use the TAB character for indentation in the C sources.
Lines do not exceed 80 characters.
Other rules can be inferred by inspecting the libpng source.
-.SH XIII. Y2K Compliance in libpng
+.SH XIV. Y2K Compliance in libpng
-July 13, 2011
+February 19, 2012
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.4.9beta01 are Y2K compliant. It is my belief that earlier
+upward through 1.5.10beta01 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that
@@ -4389,31 +5733,42 @@
1.4.1beta01-03 14 10401 14.so.14.1[.0]
1.4.1rc01 14 10401 14.so.14.1[.0]
1.4.1beta04-12 14 10401 14.so.14.1[.0]
- 1.4.1rc02-04 14 10401 14.so.14.1[.0]
1.4.1 14 10401 14.so.14.1[.0]
- 1.4.2beta01 14 10402 14.so.14.2[.0]
- 1.4.2rc02-06 14 10402 14.so.14.2[.0]
1.4.2 14 10402 14.so.14.2[.0]
- 1.4.3beta01-05 14 10403 14.so.14.3[.0]
- 1.4.3rc01-03 14 10403 14.so.14.3[.0]
1.4.3 14 10403 14.so.14.3[.0]
- 1.4.4beta01-08 14 10404 14.so.14.4[.0]
- 1.4.4rc01-05 14 10404 14.so.14.4[.0]
1.4.4 14 10404 14.so.14.4[.0]
- 1.4.5beta01-04 14 10405 14.so.14.5[.0]
- 1.4.5rc01 14 10405 14.so.14.5[.0]
- 1.4.5beta05-07 14 10405 14.so.14.5[.0]
- 1.4.5rc02-03 14 10405 14.so.14.5[.0]
- 1.4.5 14 10405 14.so.14.5[.0]
- 1.4.6beta01-07 14 10406 14.so.14.6[.0]
- 1.4.6rc01 14 10406 14.so.14.6[.0]
- 1.4.6 14 10406 14.so.14.6[.0]
- 1.4.7rc01 14 10407 14.so.14.7[.0]
- 1.4.7 14 10407 14.so.14.7[.0]
- 1.4.8beta01-05 14 10408 14.so.14.8[.0]
- 1.4.8rc01 14 10408 14.so.14.8[.0]
- 1.4.8 14 10408 14.so.14.8[.0]
- 1.4.9beta01 14 10409 14.so.14.9[.0]
+ 1.5.0beta01-58 15 10500 15.so.15.0[.0]
+ 1.5.0rc01-07 15 10500 15.so.15.0[.0]
+ 1.5.0 15 10500 15.so.15.0[.0]
+ 1.5.1beta01-11 15 10501 15.so.15.1[.0]
+ 1.5.1rc01-02 15 10501 15.so.15.1[.0]
+ 1.5.1 15 10501 15.so.15.1[.0]
+ 1.5.2beta01-03 15 10502 15.so.15.2[.0]
+ 1.5.2rc01-03 15 10502 15.so.15.2[.0]
+ 1.5.2 15 10502 15.so.15.2[.0]
+ 1.5.3beta01-10 15 10503 15.so.15.3[.0]
+ 1.5.3rc01-02 15 10503 15.so.15.3[.0]
+ 1.5.3beta11 15 10503 15.so.15.3[.0]
+ 1.5.3 [omitted]
+ 1.5.4beta01-08 15 10504 15.so.15.4[.0]
+ 1.5.4rc01 15 10504 15.so.15.4[.0]
+ 1.5.4 15 10504 15.so.15.4[.0]
+ 1.5.5beta01-08 15 10505 15.so.15.5[.0]
+ 1.5.5rc01 15 10505 15.so.15.5[.0]
+ 1.5.5 15 10505 15.so.15.5[.0]
+ 1.5.6beta01-07 15 10506 15.so.15.6[.0]
+ 1.5.6rc01-03 15 10506 15.so.15.6[.0]
+ 1.5.6 15 10506 15.so.15.6[.0]
+ 1.5.7beta01-05 15 10507 15.so.15.7[.0]
+ 1.5.7rc01-03 15 10507 15.so.15.7[.0]
+ 1.5.7 15 10507 15.so.15.7[.0]
+ 1.5.8beta01 15 10508 15.so.15.8[.0]
+ 1.5.8rc01 15 10508 15.so.15.8[.0]
+ 1.5.8 15 10508 15.so.15.8[.0]
+ 1.5.9beta01-02 15 10509 15.so.15.9[.0]
+ 1.5.9rc01 15 10509 15.so.15.9[.0]
+ 1.5.9 15 10509 15.so.15.9[.0]
+ 1.5.10beta01 15 10510 15.so.15.10[.0]
Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be
@@ -4427,6 +5782,7 @@
.SH "SEE ALSO"
.BR "png"(5), " libpngpf"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
+
.LP
.IR libpng :
.IP
@@ -4469,7 +5825,7 @@
Thanks to Frank J. T. Wojcik for helping with the documentation.
-Libpng version 1.4.9beta01 - July 13, 2011:
+Libpng version 1.5.10beta01 - February 19, 2012:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@@ -4492,7 +5848,7 @@
This code is released under the libpng license.
-libpng versions 1.2.6, August 15, 2004, through 1.4.9beta01, July 13, 2011, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.10beta01, February 19, 2012, are
Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@@ -4591,7 +5947,7 @@
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
-July 13, 2011
+February 19, 2012
.\" end of man page
diff --git a/libpngpf.3 b/libpngpf.3
index c6fa828..bcd6496 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,800 +1,26 @@
-.TH LIBPNGPF 3 "July 8, 2011"
+.TH LIBPNGPF 3 "February 19, 2012"
.SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.4.9beta01
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.10beta01
(private functions)
.SH SYNOPSIS
-\fB#include <png.h>\fP
-
\fB#include \fI"pngpriv.h"
\fI\fB
-\fBvoid png_64bit_product (long \fP\fIv1\fP\fB, long \fP\fIv2\fP\fB, unsigned long \fI*hi_product,
+\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer \fP\fImaintained\fP\fB, now \fIthat
-\fBunsigned long \fI*lo_product\fP\fB);\fP
+\fBthe private function prototypes are hidden in pngpriv.h and not \fIaccessible
-\fI\fB
+\fBto applications. Look in pngpriv.h for the prototypes and a short \fIdescription
-\fBvoid png_build_gamma_table (png_structp \fP\fIpng_ptr\fP\fB, png_byte \fIbit_depth\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_build_grayscale_palette (int \fP\fIbit_depth\fP\fB, png_colorp \fIpalette\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_calculate_crc (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIptr\fP\fB, png_size_t \fIlength\fP\fB);\fP
-
-\fI\fB
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-\fI\fB
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-\fBint png_check_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_fixed_point \fP\fIint_white_x\fP\fB, png_fixed_point \fP\fIint_white_y\fP\fB, png_fixed_point \fP\fIint_red_x\fP\fB, png_fixed_point \fP\fIint_red_y\fP\fB, png_fixed_point \fP\fIint_green_x\fP\fB, png_fixed_point \fP\fIint_green_y\fP\fB, png_fixed_point \fP\fIint_blue_x\fP\fB, png_fixed_point \fIint_blue_y\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
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-\fBpng_size_t png_check_keyword (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charpp \fInew_key\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_check_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fImask\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_correct_palette (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP
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-\fI\fB
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-\fBint png_crc_error (png_structp \fIpng_ptr\fP\fB);\fP
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-\fI\fB
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-\fBint png_crc_finish (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIskip\fP\fB);\fP
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-\fBvoid png_crc_read (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuf\fP\fB, png_size_t \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBpng_voidp png_create_struct (int \fItype\fP\fB);\fP
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-\fBpng_voidp png_create_struct_2 (int \fP\fItype\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBint png_debug(int \fP\fIlevel\fP\fB, png_const_charp \fImessage\fP\fB);\fP
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-\fI\fB
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-\fBint png_debug1(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fIp1\fP\fB);\fP
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-\fI\fB
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-\fBint png_debug2(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fP\fIp1\fP\fB, \fIp2\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_decompress_chunk (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcomp_type\fP\fB, png_size_t \fP\fIchunklength\fP\fB, png_size_t \fP\fIprefix_length\fP\fB, png_size_t \fI*data_length\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_destroy_struct (png_voidp \fIstruct_ptr\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_destroy_struct_2 (png_voidp \fP\fIstruct_ptr\fP\fB, png_free_ptr \fP\fIfree_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP
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-\fBvoid png_do_background (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fP\fItrans_color\fP\fB, png_color_16p \fP\fIbackground\fP\fB, png_color_16p \fP\fIbackground_1\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_bytep \fP\fIgamma_from_1\fP\fB, png_bytep \fP\fIgamma_to_1\fP\fB, png_uint_16pp \fP\fIgamma_16\fP\fB, png_uint_16pp \fP\fIgamma_16_from_1\fP\fB, png_uint_16pp \fP\fIgamma_16_to_1\fP\fB, int \fIgamma_shift\fP\fB);\fP
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-\fBvoid png_do_bgr (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_do_chop (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_do_expand (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fItrans_value\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_do_expand_palette (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fInum_trans\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_gamma (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_uint_16pp \fP\fIgamma_16_table\fP\fB, int \fIgamma_shift\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_gray_to_rgb (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_do_invert (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fBvoid png_do_pack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIbit_depth\fP\fB);\fP
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-\fBvoid png_do_packswap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fBvoid png_do_quantize (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIpalette_lookup\fP\fB, png_bytep \fIquantize_lookup\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_do_read_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, png_uint_32 \fIflags\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_do_read_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fP\fIpass\fP\fB, png_uint_32 \fItransformations\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_read_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_do_read_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
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-\fI\fB
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-\fBint png_do_rgb_to_gray (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_shift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIbit_depth\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_strip_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIflags\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_swap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_unpack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fBvoid png_do_unshift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIsig_bits\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_write_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fIpass\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_write_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_write_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_do_write_transformations (png_structp \fIpng_ptr\fP\fB);\fP
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-\fI\fB
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-\fBvoid *png_far_to_near (png_structp png_ptr,png_voidp \fP\fIptr\fP\fB, int \fIcheck\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_flush (png_structp \fIpng_ptr\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_handle_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_handle_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_handle_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_handle_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_handle_IEND (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_handle_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_handle_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_handle_iTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_handle_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_handle_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_handle_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_handle_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_handle_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_handle_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_handle_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_handle_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_handle_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_handle_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_info_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_init_mmx_flags (png_structp \fIpng_ptr\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_init_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_process_IDAT_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_process_some_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_push_check_crc (png_structp \fIpng_ptr\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_push_crc_finish (png_structp \fIpng_ptr\fP\fB);\fP
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-\fI\fB
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-\fBvoid png_push_crc_skip (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fBvoid png_push_fill_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_have_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_have_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_have_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_process_row (png_structp \fIpng_ptr\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_read_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_read_IDAT (png_structp \fIpng_ptr\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_read_sig (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_read_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fI\fB
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-\fI\fB
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-\fBvoid png_push_read_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fI\fB
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-\fI\fB
-
-\fBvoid png_push_restore_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_push_save_buffer (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_read_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
-
-\fI\fB
-
-\fBvoid png_read_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_infop \fIend_info_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fBvoid png_read_filter_row (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIprev_row\fP\fB, int \fIfilter\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_read_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fBvoid png_read_push_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fBvoid png_read_sig (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fBvoid png_read_start_row (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fBvoid png_read_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fBvoid png_reset_crc (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fBint png_set_text_2 (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_cHRM (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
-
-\fI\fB
-
-\fBvoid png_write_destroy (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fBvoid png_write_filtered_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIfiltered_row\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_find_filter (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fIrow_info\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_gAMA (png_structp \fP\fIpng_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIint_file_gamma\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_uint_16p \fP\fIhist\fP\fB, int \fInum_hist\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, int \fIproflen\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_IDAT (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_IEND (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fP\fIfilter_type\fP\fB, int \fIinterlace_type\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_iTXt (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcompression\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fIlang\fP\fB, png_charp \fP\fItranslated_key\fP\fB, png_charp \fItext\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_offset\fP\fB, png_uint_32 \fP\fIy_offset\fP\fB, int \fIunit_type\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_pixels_per_unit\fP\fB, png_uint_32 \fP\fIy_pixels_per_unit\fP\fB, int \fIunit_type\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_uint_32 \fInum_pal\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fP\fIsbit\fP\fB, int \fIcolor_type\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_sCAL_s (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, png_charp \fP\fIwidth\fP\fB, png_charp \fIheight\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_sRGB (png_structp \fP\fIpng_ptr\fP\fB, int \fIintent\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_spalette_p \fIpalette\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_start_row (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fItext_len\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, png_color_16p \fP\fIvalues\fP\fB, int \fP\fInumber\fP\fB, int \fIcolor_type\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_write_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fP\fItext_len\fP\fB, int \fIcompression\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP
-
-\fI\fB
+\fBof each \fIfunction.
\fI\fB
.SH DESCRIPTION
-The functions listed above are used privately by libpng
+The functions previously listed here are used privately by libpng
and are not recommended for use by applications. They are
-not "exported" to applications using shared libraries. They
-are listed alphabetically here as an aid to libpng maintainers.
-See png.h for more information on these functions.
+not "exported" to applications using shared libraries.
.SH SEE ALSO
.BR "png"(5), " libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
diff --git a/ltmain.sh b/ltmain.sh
index 04eaea4..63ae69d 100755
--- a/ltmain.sh
+++ b/ltmain.sh
@@ -1,10 +1,9 @@
-# Generated from ltmain.m4sh.
-# libtool (GNU libtool) 2.2.10
+# libtool (GNU libtool) 2.4.2
# Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+# 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
# This is free software; see the source for copying conditions. There is NO
# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
@@ -42,6 +41,7 @@
# --quiet, --silent don't print informational messages
# --no-quiet, --no-silent
# print informational messages (default)
+# --no-warn don't display warning messages
# --tag=TAG use configuration variables from tag TAG
# -v, --verbose print more informational messages than default
# --no-verbose don't print the extra informational messages
@@ -70,17 +70,19 @@
# compiler: $LTCC
# compiler flags: $LTCFLAGS
# linker: $LD (gnu? $with_gnu_ld)
-# $progname: (GNU libtool) 2.2.10
+# $progname: (GNU libtool) 2.4.2
# automake: $automake_version
# autoconf: $autoconf_version
#
# Report bugs to <bug-libtool@gnu.org>.
+# GNU libtool home page: <http://www.gnu.org/software/libtool/>.
+# General help using GNU software: <http://www.gnu.org/gethelp/>.
PROGRAM=libtool
PACKAGE=libtool
-VERSION=2.2.10
+VERSION=2.4.2
TIMESTAMP=""
-package_revision=1.3175
+package_revision=1.3337
# Be Bourne compatible
if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
@@ -135,15 +137,10 @@
: ${CP="cp -f"}
test "${ECHO+set}" = set || ECHO=${as_echo-'printf %s\n'}
-: ${EGREP="grep -E"}
-: ${FGREP="grep -F"}
-: ${GREP="grep"}
-: ${LN_S="ln -s"}
: ${MAKE="make"}
: ${MKDIR="mkdir"}
: ${MV="mv -f"}
: ${RM="rm -f"}
-: ${SED="sed"}
: ${SHELL="${CONFIG_SHELL-/bin/sh}"}
: ${Xsed="$SED -e 1s/^X//"}
@@ -163,6 +160,27 @@
dirname="s,/[^/]*$,,"
basename="s,^.*/,,"
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ func_dirname_result=`$ECHO "${1}" | $SED "$dirname"`
+ if test "X$func_dirname_result" = "X${1}"; then
+ func_dirname_result="${3}"
+ else
+ func_dirname_result="$func_dirname_result${2}"
+ fi
+} # func_dirname may be replaced by extended shell implementation
+
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result=`$ECHO "${1}" | $SED "$basename"`
+} # func_basename may be replaced by extended shell implementation
+
+
# func_dirname_and_basename file append nondir_replacement
# perform func_basename and func_dirname in a single function
# call:
@@ -177,17 +195,31 @@
# those functions but instead duplicate the functionality here.
func_dirname_and_basename ()
{
- # Extract subdirectory from the argument.
- func_dirname_result=`$ECHO "${1}" | $SED -e "$dirname"`
- if test "X$func_dirname_result" = "X${1}"; then
- func_dirname_result="${3}"
- else
- func_dirname_result="$func_dirname_result${2}"
- fi
- func_basename_result=`$ECHO "${1}" | $SED -e "$basename"`
-}
+ # Extract subdirectory from the argument.
+ func_dirname_result=`$ECHO "${1}" | $SED -e "$dirname"`
+ if test "X$func_dirname_result" = "X${1}"; then
+ func_dirname_result="${3}"
+ else
+ func_dirname_result="$func_dirname_result${2}"
+ fi
+ func_basename_result=`$ECHO "${1}" | $SED -e "$basename"`
+} # func_dirname_and_basename may be replaced by extended shell implementation
-# Generated shell functions inserted here.
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+ case ${2} in
+ .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
+ *) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
+ esac
+} # func_stripname may be replaced by extended shell implementation
+
# These SED scripts presuppose an absolute path with a trailing slash.
pathcar='s,^/\([^/]*\).*$,\1,'
@@ -351,7 +383,7 @@
;;
*)
save_IFS="$IFS"
- IFS=:
+ IFS=${PATH_SEPARATOR-:}
for progdir in $PATH; do
IFS="$save_IFS"
test -x "$progdir/$progname" && break
@@ -370,6 +402,15 @@
# Same as above, but do not quote variable references.
double_quote_subst='s/\(["`\\]\)/\\\1/g'
+# Sed substitution that turns a string into a regex matching for the
+# string literally.
+sed_make_literal_regex='s,[].[^$\\*\/],\\&,g'
+
+# Sed substitution that converts a w32 file name or path
+# which contains forward slashes, into one that contains
+# (escaped) backslashes. A very naive implementation.
+lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
+
# Re-`\' parameter expansions in output of double_quote_subst that were
# `\'-ed in input to the same. If an odd number of `\' preceded a '$'
# in input to double_quote_subst, that '$' was protected from expansion.
@@ -398,7 +439,7 @@
# name if it has been set yet.
func_echo ()
{
- $ECHO "$progname${mode+: }$mode: $*"
+ $ECHO "$progname: ${opt_mode+$opt_mode: }$*"
}
# func_verbose arg...
@@ -424,14 +465,14 @@
# Echo program name prefixed message to standard error.
func_error ()
{
- $ECHO "$progname${mode+: }$mode: "${1+"$@"} 1>&2
+ $ECHO "$progname: ${opt_mode+$opt_mode: }"${1+"$@"} 1>&2
}
# func_warning arg...
# Echo program name prefixed warning message to standard error.
func_warning ()
{
- $opt_warning && $ECHO "$progname${mode+: }$mode: warning: "${1+"$@"} 1>&2
+ $opt_warning && $ECHO "$progname: ${opt_mode+$opt_mode: }warning: "${1+"$@"} 1>&2
# bash bug again:
:
@@ -650,11 +691,30 @@
fi
}
+# func_tr_sh
+# Turn $1 into a string suitable for a shell variable name.
+# Result is stored in $func_tr_sh_result. All characters
+# not in the set a-zA-Z0-9_ are replaced with '_'. Further,
+# if $1 begins with a digit, a '_' is prepended as well.
+func_tr_sh ()
+{
+ case $1 in
+ [0-9]* | *[!a-zA-Z0-9_]*)
+ func_tr_sh_result=`$ECHO "$1" | $SED 's/^\([0-9]\)/_\1/; s/[^a-zA-Z0-9_]/_/g'`
+ ;;
+ * )
+ func_tr_sh_result=$1
+ ;;
+ esac
+}
+
# func_version
# Echo version message to standard output and exit.
func_version ()
{
+ $opt_debug
+
$SED -n '/(C)/!b go
:more
/\./!{
@@ -676,6 +736,8 @@
# Echo short help message to standard output and exit.
func_usage ()
{
+ $opt_debug
+
$SED -n '/^# Usage:/,/^# *.*--help/ {
s/^# //
s/^# *$//
@@ -692,7 +754,10 @@
# unless 'noexit' is passed as argument.
func_help ()
{
+ $opt_debug
+
$SED -n '/^# Usage:/,/# Report bugs to/ {
+ :print
s/^# //
s/^# *$//
s*\$progname*'$progname'*
@@ -702,10 +767,14 @@
s*\$LTCFLAGS*'"$LTCFLAGS"'*
s*\$LD*'"$LD"'*
s/\$with_gnu_ld/'"$with_gnu_ld"'/
- s/\$automake_version/'"`(automake --version) 2>/dev/null |$SED 1q`"'/
- s/\$autoconf_version/'"`(autoconf --version) 2>/dev/null |$SED 1q`"'/
+ s/\$automake_version/'"`(${AUTOMAKE-automake} --version) 2>/dev/null |$SED 1q`"'/
+ s/\$autoconf_version/'"`(${AUTOCONF-autoconf} --version) 2>/dev/null |$SED 1q`"'/
p
- }' < "$progpath"
+ d
+ }
+ /^# .* home page:/b print
+ /^# General help using/b print
+ ' < "$progpath"
ret=$?
if test -z "$1"; then
exit $ret
@@ -717,12 +786,39 @@
# exit_cmd.
func_missing_arg ()
{
+ $opt_debug
+
func_error "missing argument for $1."
exit_cmd=exit
}
-exit_cmd=:
+# func_split_short_opt shortopt
+# Set func_split_short_opt_name and func_split_short_opt_arg shell
+# variables after splitting SHORTOPT after the 2nd character.
+func_split_short_opt ()
+{
+ my_sed_short_opt='1s/^\(..\).*$/\1/;q'
+ my_sed_short_rest='1s/^..\(.*\)$/\1/;q'
+
+ func_split_short_opt_name=`$ECHO "$1" | $SED "$my_sed_short_opt"`
+ func_split_short_opt_arg=`$ECHO "$1" | $SED "$my_sed_short_rest"`
+} # func_split_short_opt may be replaced by extended shell implementation
+
+
+# func_split_long_opt longopt
+# Set func_split_long_opt_name and func_split_long_opt_arg shell
+# variables after splitting LONGOPT at the `=' sign.
+func_split_long_opt ()
+{
+ my_sed_long_opt='1s/^\(--[^=]*\)=.*/\1/;q'
+ my_sed_long_arg='1s/^--[^=]*=//'
+
+ func_split_long_opt_name=`$ECHO "$1" | $SED "$my_sed_long_opt"`
+ func_split_long_opt_arg=`$ECHO "$1" | $SED "$my_sed_long_arg"`
+} # func_split_long_opt may be replaced by extended shell implementation
+
+exit_cmd=:
@@ -732,25 +828,64 @@
magic_exe="%%%MAGIC EXE variable%%%"
# Global variables.
-# $mode is unset
nonopt=
-execute_dlfiles=
preserve_args=
lo2o="s/\\.lo\$/.${objext}/"
o2lo="s/\\.${objext}\$/.lo/"
extracted_archives=
extracted_serial=0
-opt_dry_run=false
-opt_duplicate_deps=false
-opt_silent=false
-opt_debug=:
-
# If this variable is set in any of the actions, the command in it
# will be execed at the end. This prevents here-documents from being
# left over by shells.
exec_cmd=
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "${1}=\$${1}\${2}"
+} # func_append may be replaced by extended shell implementation
+
+# func_append_quoted var value
+# Quote VALUE and append to the end of shell variable VAR, separated
+# by a space.
+func_append_quoted ()
+{
+ func_quote_for_eval "${2}"
+ eval "${1}=\$${1}\\ \$func_quote_for_eval_result"
+} # func_append_quoted may be replaced by extended shell implementation
+
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=`expr "${@}"`
+} # func_arith may be replaced by extended shell implementation
+
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=`expr "${1}" : ".*" 2>/dev/null || echo $max_cmd_len`
+} # func_len may be replaced by extended shell implementation
+
+
+# func_lo2o object
+func_lo2o ()
+{
+ func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"`
+} # func_lo2o may be replaced by extended shell implementation
+
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=`$ECHO "${1}" | $SED 's/\.[^.]*$/.lo/'`
+} # func_xform may be replaced by extended shell implementation
+
+
# func_fatal_configuration arg...
# Echo program name prefixed message to standard error, followed by
# a configuration failure hint, and exit.
@@ -840,145 +975,6 @@
esac
}
-# Parse options once, thoroughly. This comes as soon as possible in
-# the script to make things like `libtool --version' happen quickly.
-{
-
- # Shorthand for --mode=foo, only valid as the first argument
- case $1 in
- clean|clea|cle|cl)
- shift; set dummy --mode clean ${1+"$@"}; shift
- ;;
- compile|compil|compi|comp|com|co|c)
- shift; set dummy --mode compile ${1+"$@"}; shift
- ;;
- execute|execut|execu|exec|exe|ex|e)
- shift; set dummy --mode execute ${1+"$@"}; shift
- ;;
- finish|finis|fini|fin|fi|f)
- shift; set dummy --mode finish ${1+"$@"}; shift
- ;;
- install|instal|insta|inst|ins|in|i)
- shift; set dummy --mode install ${1+"$@"}; shift
- ;;
- link|lin|li|l)
- shift; set dummy --mode link ${1+"$@"}; shift
- ;;
- uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u)
- shift; set dummy --mode uninstall ${1+"$@"}; shift
- ;;
- esac
-
- # Parse non-mode specific arguments:
- while test "$#" -gt 0; do
- opt="$1"
- shift
-
- case $opt in
- --config) func_config ;;
-
- --debug) preserve_args="$preserve_args $opt"
- func_echo "enabling shell trace mode"
- opt_debug='set -x'
- $opt_debug
- ;;
-
- -dlopen) test "$#" -eq 0 && func_missing_arg "$opt" && break
- execute_dlfiles="$execute_dlfiles $1"
- shift
- ;;
-
- --dry-run | -n) opt_dry_run=: ;;
- --features) func_features ;;
- --finish) mode="finish" ;;
-
- --mode) test "$#" -eq 0 && func_missing_arg "$opt" && break
- case $1 in
- # Valid mode arguments:
- clean) ;;
- compile) ;;
- execute) ;;
- finish) ;;
- install) ;;
- link) ;;
- relink) ;;
- uninstall) ;;
-
- # Catch anything else as an error
- *) func_error "invalid argument for $opt"
- exit_cmd=exit
- break
- ;;
- esac
-
- mode="$1"
- shift
- ;;
-
- --preserve-dup-deps)
- opt_duplicate_deps=: ;;
-
- --quiet|--silent) preserve_args="$preserve_args $opt"
- opt_silent=:
- opt_verbose=false
- ;;
-
- --no-quiet|--no-silent)
- preserve_args="$preserve_args $opt"
- opt_silent=false
- ;;
-
- --verbose| -v) preserve_args="$preserve_args $opt"
- opt_silent=false
- opt_verbose=:
- ;;
-
- --no-verbose) preserve_args="$preserve_args $opt"
- opt_verbose=false
- ;;
-
- --tag) test "$#" -eq 0 && func_missing_arg "$opt" && break
- preserve_args="$preserve_args $opt $1"
- func_enable_tag "$1" # tagname is set here
- shift
- ;;
-
- # Separate optargs to long options:
- -dlopen=*|--mode=*|--tag=*)
- func_opt_split "$opt"
- set dummy "$func_opt_split_opt" "$func_opt_split_arg" ${1+"$@"}
- shift
- ;;
-
- -\?|-h) func_usage ;;
- --help) opt_help=: ;;
- --help-all) opt_help=': help-all' ;;
- --version) func_version ;;
-
- -*) func_fatal_help "unrecognized option \`$opt'" ;;
-
- *) nonopt="$opt"
- break
- ;;
- esac
- done
-
-
- case $host in
- *cygwin* | *mingw* | *pw32* | *cegcc*)
- # don't eliminate duplications in $postdeps and $predeps
- opt_duplicate_compiler_generated_deps=:
- ;;
- *)
- opt_duplicate_compiler_generated_deps=$opt_duplicate_deps
- ;;
- esac
-
- # Having warned about all mis-specified options, bail out if
- # anything was wrong.
- $exit_cmd $EXIT_FAILURE
-}
-
# func_check_version_match
# Ensure that we are using m4 macros, and libtool script from the same
# release of libtool.
@@ -1015,38 +1011,219 @@
}
+# Shorthand for --mode=foo, only valid as the first argument
+case $1 in
+clean|clea|cle|cl)
+ shift; set dummy --mode clean ${1+"$@"}; shift
+ ;;
+compile|compil|compi|comp|com|co|c)
+ shift; set dummy --mode compile ${1+"$@"}; shift
+ ;;
+execute|execut|execu|exec|exe|ex|e)
+ shift; set dummy --mode execute ${1+"$@"}; shift
+ ;;
+finish|finis|fini|fin|fi|f)
+ shift; set dummy --mode finish ${1+"$@"}; shift
+ ;;
+install|instal|insta|inst|ins|in|i)
+ shift; set dummy --mode install ${1+"$@"}; shift
+ ;;
+link|lin|li|l)
+ shift; set dummy --mode link ${1+"$@"}; shift
+ ;;
+uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u)
+ shift; set dummy --mode uninstall ${1+"$@"}; shift
+ ;;
+esac
+
+
+
+# Option defaults:
+opt_debug=:
+opt_dry_run=false
+opt_config=false
+opt_preserve_dup_deps=false
+opt_features=false
+opt_finish=false
+opt_help=false
+opt_help_all=false
+opt_silent=:
+opt_warning=:
+opt_verbose=:
+opt_silent=false
+opt_verbose=false
+
+
+# Parse options once, thoroughly. This comes as soon as possible in the
+# script to make things like `--version' happen as quickly as we can.
+{
+ # this just eases exit handling
+ while test $# -gt 0; do
+ opt="$1"
+ shift
+ case $opt in
+ --debug|-x) opt_debug='set -x'
+ func_echo "enabling shell trace mode"
+ $opt_debug
+ ;;
+ --dry-run|--dryrun|-n)
+ opt_dry_run=:
+ ;;
+ --config)
+ opt_config=:
+func_config
+ ;;
+ --dlopen|-dlopen)
+ optarg="$1"
+ opt_dlopen="${opt_dlopen+$opt_dlopen
+}$optarg"
+ shift
+ ;;
+ --preserve-dup-deps)
+ opt_preserve_dup_deps=:
+ ;;
+ --features)
+ opt_features=:
+func_features
+ ;;
+ --finish)
+ opt_finish=:
+set dummy --mode finish ${1+"$@"}; shift
+ ;;
+ --help)
+ opt_help=:
+ ;;
+ --help-all)
+ opt_help_all=:
+opt_help=': help-all'
+ ;;
+ --mode)
+ test $# = 0 && func_missing_arg $opt && break
+ optarg="$1"
+ opt_mode="$optarg"
+case $optarg in
+ # Valid mode arguments:
+ clean|compile|execute|finish|install|link|relink|uninstall) ;;
+
+ # Catch anything else as an error
+ *) func_error "invalid argument for $opt"
+ exit_cmd=exit
+ break
+ ;;
+esac
+ shift
+ ;;
+ --no-silent|--no-quiet)
+ opt_silent=false
+func_append preserve_args " $opt"
+ ;;
+ --no-warning|--no-warn)
+ opt_warning=false
+func_append preserve_args " $opt"
+ ;;
+ --no-verbose)
+ opt_verbose=false
+func_append preserve_args " $opt"
+ ;;
+ --silent|--quiet)
+ opt_silent=:
+func_append preserve_args " $opt"
+ opt_verbose=false
+ ;;
+ --verbose|-v)
+ opt_verbose=:
+func_append preserve_args " $opt"
+opt_silent=false
+ ;;
+ --tag)
+ test $# = 0 && func_missing_arg $opt && break
+ optarg="$1"
+ opt_tag="$optarg"
+func_append preserve_args " $opt $optarg"
+func_enable_tag "$optarg"
+ shift
+ ;;
+
+ -\?|-h) func_usage ;;
+ --help) func_help ;;
+ --version) func_version ;;
+
+ # Separate optargs to long options:
+ --*=*)
+ func_split_long_opt "$opt"
+ set dummy "$func_split_long_opt_name" "$func_split_long_opt_arg" ${1+"$@"}
+ shift
+ ;;
+
+ # Separate non-argument short options:
+ -\?*|-h*|-n*|-v*)
+ func_split_short_opt "$opt"
+ set dummy "$func_split_short_opt_name" "-$func_split_short_opt_arg" ${1+"$@"}
+ shift
+ ;;
+
+ --) break ;;
+ -*) func_fatal_help "unrecognized option \`$opt'" ;;
+ *) set dummy "$opt" ${1+"$@"}; shift; break ;;
+ esac
+ done
+
+ # Validate options:
+
+ # save first non-option argument
+ if test "$#" -gt 0; then
+ nonopt="$opt"
+ shift
+ fi
+
+ # preserve --debug
+ test "$opt_debug" = : || func_append preserve_args " --debug"
+
+ case $host in
+ *cygwin* | *mingw* | *pw32* | *cegcc*)
+ # don't eliminate duplications in $postdeps and $predeps
+ opt_duplicate_compiler_generated_deps=:
+ ;;
+ *)
+ opt_duplicate_compiler_generated_deps=$opt_preserve_dup_deps
+ ;;
+ esac
+
+ $opt_help || {
+ # Sanity checks first:
+ func_check_version_match
+
+ if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then
+ func_fatal_configuration "not configured to build any kind of library"
+ fi
+
+ # Darwin sucks
+ eval std_shrext=\"$shrext_cmds\"
+
+ # Only execute mode is allowed to have -dlopen flags.
+ if test -n "$opt_dlopen" && test "$opt_mode" != execute; then
+ func_error "unrecognized option \`-dlopen'"
+ $ECHO "$help" 1>&2
+ exit $EXIT_FAILURE
+ fi
+
+ # Change the help message to a mode-specific one.
+ generic_help="$help"
+ help="Try \`$progname --help --mode=$opt_mode' for more information."
+ }
+
+
+ # Bail if the options were screwed
+ $exit_cmd $EXIT_FAILURE
+}
+
+
+
+
## ----------- ##
## Main. ##
## ----------- ##
-$opt_help || {
- # Sanity checks first:
- func_check_version_match
-
- if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then
- func_fatal_configuration "not configured to build any kind of library"
- fi
-
- test -z "$mode" && func_fatal_error "error: you must specify a MODE."
-
-
- # Darwin sucks
- eval std_shrext=\"$shrext_cmds\"
-
-
- # Only execute mode is allowed to have -dlopen flags.
- if test -n "$execute_dlfiles" && test "$mode" != execute; then
- func_error "unrecognized option \`-dlopen'"
- $ECHO "$help" 1>&2
- exit $EXIT_FAILURE
- fi
-
- # Change the help message to a mode-specific one.
- generic_help="$help"
- help="Try \`$progname --help --mode=$mode' for more information."
-}
-
-
# func_lalib_p file
# True iff FILE is a libtool `.la' library or `.lo' object file.
# This function is only a basic sanity check; it will hardly flush out
@@ -1110,12 +1287,9 @@
# temporary ltwrapper_script.
func_ltwrapper_scriptname ()
{
- func_ltwrapper_scriptname_result=""
- if func_ltwrapper_executable_p "$1"; then
- func_dirname_and_basename "$1" "" "."
- func_stripname '' '.exe' "$func_basename_result"
- func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper"
- fi
+ func_dirname_and_basename "$1" "" "."
+ func_stripname '' '.exe' "$func_basename_result"
+ func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper"
}
# func_ltwrapper_p file
@@ -1161,6 +1335,37 @@
}
+# func_resolve_sysroot PATH
+# Replace a leading = in PATH with a sysroot. Store the result into
+# func_resolve_sysroot_result
+func_resolve_sysroot ()
+{
+ func_resolve_sysroot_result=$1
+ case $func_resolve_sysroot_result in
+ =*)
+ func_stripname '=' '' "$func_resolve_sysroot_result"
+ func_resolve_sysroot_result=$lt_sysroot$func_stripname_result
+ ;;
+ esac
+}
+
+# func_replace_sysroot PATH
+# If PATH begins with the sysroot, replace it with = and
+# store the result into func_replace_sysroot_result.
+func_replace_sysroot ()
+{
+ case "$lt_sysroot:$1" in
+ ?*:"$lt_sysroot"*)
+ func_stripname "$lt_sysroot" '' "$1"
+ func_replace_sysroot_result="=$func_stripname_result"
+ ;;
+ *)
+ # Including no sysroot.
+ func_replace_sysroot_result=$1
+ ;;
+ esac
+}
+
# func_infer_tag arg
# Infer tagged configuration to use if any are available and
# if one wasn't chosen via the "--tag" command line option.
@@ -1173,8 +1378,7 @@
if test -n "$available_tags" && test -z "$tagname"; then
CC_quoted=
for arg in $CC; do
- func_quote_for_eval "$arg"
- CC_quoted="$CC_quoted $func_quote_for_eval_result"
+ func_append_quoted CC_quoted "$arg"
done
CC_expanded=`func_echo_all $CC`
CC_quoted_expanded=`func_echo_all $CC_quoted`
@@ -1193,8 +1397,7 @@
CC_quoted=
for arg in $CC; do
# Double-quote args containing other shell metacharacters.
- func_quote_for_eval "$arg"
- CC_quoted="$CC_quoted $func_quote_for_eval_result"
+ func_append_quoted CC_quoted "$arg"
done
CC_expanded=`func_echo_all $CC`
CC_quoted_expanded=`func_echo_all $CC_quoted`
@@ -1263,6 +1466,486 @@
}
}
+
+##################################################
+# FILE NAME AND PATH CONVERSION HELPER FUNCTIONS #
+##################################################
+
+# func_convert_core_file_wine_to_w32 ARG
+# Helper function used by file name conversion functions when $build is *nix,
+# and $host is mingw, cygwin, or some other w32 environment. Relies on a
+# correctly configured wine environment available, with the winepath program
+# in $build's $PATH.
+#
+# ARG is the $build file name to be converted to w32 format.
+# Result is available in $func_convert_core_file_wine_to_w32_result, and will
+# be empty on error (or when ARG is empty)
+func_convert_core_file_wine_to_w32 ()
+{
+ $opt_debug
+ func_convert_core_file_wine_to_w32_result="$1"
+ if test -n "$1"; then
+ # Unfortunately, winepath does not exit with a non-zero error code, so we
+ # are forced to check the contents of stdout. On the other hand, if the
+ # command is not found, the shell will set an exit code of 127 and print
+ # *an error message* to stdout. So we must check for both error code of
+ # zero AND non-empty stdout, which explains the odd construction:
+ func_convert_core_file_wine_to_w32_tmp=`winepath -w "$1" 2>/dev/null`
+ if test "$?" -eq 0 && test -n "${func_convert_core_file_wine_to_w32_tmp}"; then
+ func_convert_core_file_wine_to_w32_result=`$ECHO "$func_convert_core_file_wine_to_w32_tmp" |
+ $SED -e "$lt_sed_naive_backslashify"`
+ else
+ func_convert_core_file_wine_to_w32_result=
+ fi
+ fi
+}
+# end: func_convert_core_file_wine_to_w32
+
+
+# func_convert_core_path_wine_to_w32 ARG
+# Helper function used by path conversion functions when $build is *nix, and
+# $host is mingw, cygwin, or some other w32 environment. Relies on a correctly
+# configured wine environment available, with the winepath program in $build's
+# $PATH. Assumes ARG has no leading or trailing path separator characters.
+#
+# ARG is path to be converted from $build format to win32.
+# Result is available in $func_convert_core_path_wine_to_w32_result.
+# Unconvertible file (directory) names in ARG are skipped; if no directory names
+# are convertible, then the result may be empty.
+func_convert_core_path_wine_to_w32 ()
+{
+ $opt_debug
+ # unfortunately, winepath doesn't convert paths, only file names
+ func_convert_core_path_wine_to_w32_result=""
+ if test -n "$1"; then
+ oldIFS=$IFS
+ IFS=:
+ for func_convert_core_path_wine_to_w32_f in $1; do
+ IFS=$oldIFS
+ func_convert_core_file_wine_to_w32 "$func_convert_core_path_wine_to_w32_f"
+ if test -n "$func_convert_core_file_wine_to_w32_result" ; then
+ if test -z "$func_convert_core_path_wine_to_w32_result"; then
+ func_convert_core_path_wine_to_w32_result="$func_convert_core_file_wine_to_w32_result"
+ else
+ func_append func_convert_core_path_wine_to_w32_result ";$func_convert_core_file_wine_to_w32_result"
+ fi
+ fi
+ done
+ IFS=$oldIFS
+ fi
+}
+# end: func_convert_core_path_wine_to_w32
+
+
+# func_cygpath ARGS...
+# Wrapper around calling the cygpath program via LT_CYGPATH. This is used when
+# when (1) $build is *nix and Cygwin is hosted via a wine environment; or (2)
+# $build is MSYS and $host is Cygwin, or (3) $build is Cygwin. In case (1) or
+# (2), returns the Cygwin file name or path in func_cygpath_result (input
+# file name or path is assumed to be in w32 format, as previously converted
+# from $build's *nix or MSYS format). In case (3), returns the w32 file name
+# or path in func_cygpath_result (input file name or path is assumed to be in
+# Cygwin format). Returns an empty string on error.
+#
+# ARGS are passed to cygpath, with the last one being the file name or path to
+# be converted.
+#
+# Specify the absolute *nix (or w32) name to cygpath in the LT_CYGPATH
+# environment variable; do not put it in $PATH.
+func_cygpath ()
+{
+ $opt_debug
+ if test -n "$LT_CYGPATH" && test -f "$LT_CYGPATH"; then
+ func_cygpath_result=`$LT_CYGPATH "$@" 2>/dev/null`
+ if test "$?" -ne 0; then
+ # on failure, ensure result is empty
+ func_cygpath_result=
+ fi
+ else
+ func_cygpath_result=
+ func_error "LT_CYGPATH is empty or specifies non-existent file: \`$LT_CYGPATH'"
+ fi
+}
+#end: func_cygpath
+
+
+# func_convert_core_msys_to_w32 ARG
+# Convert file name or path ARG from MSYS format to w32 format. Return
+# result in func_convert_core_msys_to_w32_result.
+func_convert_core_msys_to_w32 ()
+{
+ $opt_debug
+ # awkward: cmd appends spaces to result
+ func_convert_core_msys_to_w32_result=`( cmd //c echo "$1" ) 2>/dev/null |
+ $SED -e 's/[ ]*$//' -e "$lt_sed_naive_backslashify"`
+}
+#end: func_convert_core_msys_to_w32
+
+
+# func_convert_file_check ARG1 ARG2
+# Verify that ARG1 (a file name in $build format) was converted to $host
+# format in ARG2. Otherwise, emit an error message, but continue (resetting
+# func_to_host_file_result to ARG1).
+func_convert_file_check ()
+{
+ $opt_debug
+ if test -z "$2" && test -n "$1" ; then
+ func_error "Could not determine host file name corresponding to"
+ func_error " \`$1'"
+ func_error "Continuing, but uninstalled executables may not work."
+ # Fallback:
+ func_to_host_file_result="$1"
+ fi
+}
+# end func_convert_file_check
+
+
+# func_convert_path_check FROM_PATHSEP TO_PATHSEP FROM_PATH TO_PATH
+# Verify that FROM_PATH (a path in $build format) was converted to $host
+# format in TO_PATH. Otherwise, emit an error message, but continue, resetting
+# func_to_host_file_result to a simplistic fallback value (see below).
+func_convert_path_check ()
+{
+ $opt_debug
+ if test -z "$4" && test -n "$3"; then
+ func_error "Could not determine the host path corresponding to"
+ func_error " \`$3'"
+ func_error "Continuing, but uninstalled executables may not work."
+ # Fallback. This is a deliberately simplistic "conversion" and
+ # should not be "improved". See libtool.info.
+ if test "x$1" != "x$2"; then
+ lt_replace_pathsep_chars="s|$1|$2|g"
+ func_to_host_path_result=`echo "$3" |
+ $SED -e "$lt_replace_pathsep_chars"`
+ else
+ func_to_host_path_result="$3"
+ fi
+ fi
+}
+# end func_convert_path_check
+
+
+# func_convert_path_front_back_pathsep FRONTPAT BACKPAT REPL ORIG
+# Modifies func_to_host_path_result by prepending REPL if ORIG matches FRONTPAT
+# and appending REPL if ORIG matches BACKPAT.
+func_convert_path_front_back_pathsep ()
+{
+ $opt_debug
+ case $4 in
+ $1 ) func_to_host_path_result="$3$func_to_host_path_result"
+ ;;
+ esac
+ case $4 in
+ $2 ) func_append func_to_host_path_result "$3"
+ ;;
+ esac
+}
+# end func_convert_path_front_back_pathsep
+
+
+##################################################
+# $build to $host FILE NAME CONVERSION FUNCTIONS #
+##################################################
+# invoked via `$to_host_file_cmd ARG'
+#
+# In each case, ARG is the path to be converted from $build to $host format.
+# Result will be available in $func_to_host_file_result.
+
+
+# func_to_host_file ARG
+# Converts the file name ARG from $build format to $host format. Return result
+# in func_to_host_file_result.
+func_to_host_file ()
+{
+ $opt_debug
+ $to_host_file_cmd "$1"
+}
+# end func_to_host_file
+
+
+# func_to_tool_file ARG LAZY
+# converts the file name ARG from $build format to toolchain format. Return
+# result in func_to_tool_file_result. If the conversion in use is listed
+# in (the comma separated) LAZY, no conversion takes place.
+func_to_tool_file ()
+{
+ $opt_debug
+ case ,$2, in
+ *,"$to_tool_file_cmd",*)
+ func_to_tool_file_result=$1
+ ;;
+ *)
+ $to_tool_file_cmd "$1"
+ func_to_tool_file_result=$func_to_host_file_result
+ ;;
+ esac
+}
+# end func_to_tool_file
+
+
+# func_convert_file_noop ARG
+# Copy ARG to func_to_host_file_result.
+func_convert_file_noop ()
+{
+ func_to_host_file_result="$1"
+}
+# end func_convert_file_noop
+
+
+# func_convert_file_msys_to_w32 ARG
+# Convert file name ARG from (mingw) MSYS to (mingw) w32 format; automatic
+# conversion to w32 is not available inside the cwrapper. Returns result in
+# func_to_host_file_result.
+func_convert_file_msys_to_w32 ()
+{
+ $opt_debug
+ func_to_host_file_result="$1"
+ if test -n "$1"; then
+ func_convert_core_msys_to_w32 "$1"
+ func_to_host_file_result="$func_convert_core_msys_to_w32_result"
+ fi
+ func_convert_file_check "$1" "$func_to_host_file_result"
+}
+# end func_convert_file_msys_to_w32
+
+
+# func_convert_file_cygwin_to_w32 ARG
+# Convert file name ARG from Cygwin to w32 format. Returns result in
+# func_to_host_file_result.
+func_convert_file_cygwin_to_w32 ()
+{
+ $opt_debug
+ func_to_host_file_result="$1"
+ if test -n "$1"; then
+ # because $build is cygwin, we call "the" cygpath in $PATH; no need to use
+ # LT_CYGPATH in this case.
+ func_to_host_file_result=`cygpath -m "$1"`
+ fi
+ func_convert_file_check "$1" "$func_to_host_file_result"
+}
+# end func_convert_file_cygwin_to_w32
+
+
+# func_convert_file_nix_to_w32 ARG
+# Convert file name ARG from *nix to w32 format. Requires a wine environment
+# and a working winepath. Returns result in func_to_host_file_result.
+func_convert_file_nix_to_w32 ()
+{
+ $opt_debug
+ func_to_host_file_result="$1"
+ if test -n "$1"; then
+ func_convert_core_file_wine_to_w32 "$1"
+ func_to_host_file_result="$func_convert_core_file_wine_to_w32_result"
+ fi
+ func_convert_file_check "$1" "$func_to_host_file_result"
+}
+# end func_convert_file_nix_to_w32
+
+
+# func_convert_file_msys_to_cygwin ARG
+# Convert file name ARG from MSYS to Cygwin format. Requires LT_CYGPATH set.
+# Returns result in func_to_host_file_result.
+func_convert_file_msys_to_cygwin ()
+{
+ $opt_debug
+ func_to_host_file_result="$1"
+ if test -n "$1"; then
+ func_convert_core_msys_to_w32 "$1"
+ func_cygpath -u "$func_convert_core_msys_to_w32_result"
+ func_to_host_file_result="$func_cygpath_result"
+ fi
+ func_convert_file_check "$1" "$func_to_host_file_result"
+}
+# end func_convert_file_msys_to_cygwin
+
+
+# func_convert_file_nix_to_cygwin ARG
+# Convert file name ARG from *nix to Cygwin format. Requires Cygwin installed
+# in a wine environment, working winepath, and LT_CYGPATH set. Returns result
+# in func_to_host_file_result.
+func_convert_file_nix_to_cygwin ()
+{
+ $opt_debug
+ func_to_host_file_result="$1"
+ if test -n "$1"; then
+ # convert from *nix to w32, then use cygpath to convert from w32 to cygwin.
+ func_convert_core_file_wine_to_w32 "$1"
+ func_cygpath -u "$func_convert_core_file_wine_to_w32_result"
+ func_to_host_file_result="$func_cygpath_result"
+ fi
+ func_convert_file_check "$1" "$func_to_host_file_result"
+}
+# end func_convert_file_nix_to_cygwin
+
+
+#############################################
+# $build to $host PATH CONVERSION FUNCTIONS #
+#############################################
+# invoked via `$to_host_path_cmd ARG'
+#
+# In each case, ARG is the path to be converted from $build to $host format.
+# The result will be available in $func_to_host_path_result.
+#
+# Path separators are also converted from $build format to $host format. If
+# ARG begins or ends with a path separator character, it is preserved (but
+# converted to $host format) on output.
+#
+# All path conversion functions are named using the following convention:
+# file name conversion function : func_convert_file_X_to_Y ()
+# path conversion function : func_convert_path_X_to_Y ()
+# where, for any given $build/$host combination the 'X_to_Y' value is the
+# same. If conversion functions are added for new $build/$host combinations,
+# the two new functions must follow this pattern, or func_init_to_host_path_cmd
+# will break.
+
+
+# func_init_to_host_path_cmd
+# Ensures that function "pointer" variable $to_host_path_cmd is set to the
+# appropriate value, based on the value of $to_host_file_cmd.
+to_host_path_cmd=
+func_init_to_host_path_cmd ()
+{
+ $opt_debug
+ if test -z "$to_host_path_cmd"; then
+ func_stripname 'func_convert_file_' '' "$to_host_file_cmd"
+ to_host_path_cmd="func_convert_path_${func_stripname_result}"
+ fi
+}
+
+
+# func_to_host_path ARG
+# Converts the path ARG from $build format to $host format. Return result
+# in func_to_host_path_result.
+func_to_host_path ()
+{
+ $opt_debug
+ func_init_to_host_path_cmd
+ $to_host_path_cmd "$1"
+}
+# end func_to_host_path
+
+
+# func_convert_path_noop ARG
+# Copy ARG to func_to_host_path_result.
+func_convert_path_noop ()
+{
+ func_to_host_path_result="$1"
+}
+# end func_convert_path_noop
+
+
+# func_convert_path_msys_to_w32 ARG
+# Convert path ARG from (mingw) MSYS to (mingw) w32 format; automatic
+# conversion to w32 is not available inside the cwrapper. Returns result in
+# func_to_host_path_result.
+func_convert_path_msys_to_w32 ()
+{
+ $opt_debug
+ func_to_host_path_result="$1"
+ if test -n "$1"; then
+ # Remove leading and trailing path separator characters from ARG. MSYS
+ # behavior is inconsistent here; cygpath turns them into '.;' and ';.';
+ # and winepath ignores them completely.
+ func_stripname : : "$1"
+ func_to_host_path_tmp1=$func_stripname_result
+ func_convert_core_msys_to_w32 "$func_to_host_path_tmp1"
+ func_to_host_path_result="$func_convert_core_msys_to_w32_result"
+ func_convert_path_check : ";" \
+ "$func_to_host_path_tmp1" "$func_to_host_path_result"
+ func_convert_path_front_back_pathsep ":*" "*:" ";" "$1"
+ fi
+}
+# end func_convert_path_msys_to_w32
+
+
+# func_convert_path_cygwin_to_w32 ARG
+# Convert path ARG from Cygwin to w32 format. Returns result in
+# func_to_host_file_result.
+func_convert_path_cygwin_to_w32 ()
+{
+ $opt_debug
+ func_to_host_path_result="$1"
+ if test -n "$1"; then
+ # See func_convert_path_msys_to_w32:
+ func_stripname : : "$1"
+ func_to_host_path_tmp1=$func_stripname_result
+ func_to_host_path_result=`cygpath -m -p "$func_to_host_path_tmp1"`
+ func_convert_path_check : ";" \
+ "$func_to_host_path_tmp1" "$func_to_host_path_result"
+ func_convert_path_front_back_pathsep ":*" "*:" ";" "$1"
+ fi
+}
+# end func_convert_path_cygwin_to_w32
+
+
+# func_convert_path_nix_to_w32 ARG
+# Convert path ARG from *nix to w32 format. Requires a wine environment and
+# a working winepath. Returns result in func_to_host_file_result.
+func_convert_path_nix_to_w32 ()
+{
+ $opt_debug
+ func_to_host_path_result="$1"
+ if test -n "$1"; then
+ # See func_convert_path_msys_to_w32:
+ func_stripname : : "$1"
+ func_to_host_path_tmp1=$func_stripname_result
+ func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1"
+ func_to_host_path_result="$func_convert_core_path_wine_to_w32_result"
+ func_convert_path_check : ";" \
+ "$func_to_host_path_tmp1" "$func_to_host_path_result"
+ func_convert_path_front_back_pathsep ":*" "*:" ";" "$1"
+ fi
+}
+# end func_convert_path_nix_to_w32
+
+
+# func_convert_path_msys_to_cygwin ARG
+# Convert path ARG from MSYS to Cygwin format. Requires LT_CYGPATH set.
+# Returns result in func_to_host_file_result.
+func_convert_path_msys_to_cygwin ()
+{
+ $opt_debug
+ func_to_host_path_result="$1"
+ if test -n "$1"; then
+ # See func_convert_path_msys_to_w32:
+ func_stripname : : "$1"
+ func_to_host_path_tmp1=$func_stripname_result
+ func_convert_core_msys_to_w32 "$func_to_host_path_tmp1"
+ func_cygpath -u -p "$func_convert_core_msys_to_w32_result"
+ func_to_host_path_result="$func_cygpath_result"
+ func_convert_path_check : : \
+ "$func_to_host_path_tmp1" "$func_to_host_path_result"
+ func_convert_path_front_back_pathsep ":*" "*:" : "$1"
+ fi
+}
+# end func_convert_path_msys_to_cygwin
+
+
+# func_convert_path_nix_to_cygwin ARG
+# Convert path ARG from *nix to Cygwin format. Requires Cygwin installed in a
+# a wine environment, working winepath, and LT_CYGPATH set. Returns result in
+# func_to_host_file_result.
+func_convert_path_nix_to_cygwin ()
+{
+ $opt_debug
+ func_to_host_path_result="$1"
+ if test -n "$1"; then
+ # Remove leading and trailing path separator characters from
+ # ARG. msys behavior is inconsistent here, cygpath turns them
+ # into '.;' and ';.', and winepath ignores them completely.
+ func_stripname : : "$1"
+ func_to_host_path_tmp1=$func_stripname_result
+ func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1"
+ func_cygpath -u -p "$func_convert_core_path_wine_to_w32_result"
+ func_to_host_path_result="$func_cygpath_result"
+ func_convert_path_check : : \
+ "$func_to_host_path_tmp1" "$func_to_host_path_result"
+ func_convert_path_front_back_pathsep ":*" "*:" : "$1"
+ fi
+}
+# end func_convert_path_nix_to_cygwin
+
+
# func_mode_compile arg...
func_mode_compile ()
{
@@ -1303,12 +1986,12 @@
;;
-pie | -fpie | -fPIE)
- pie_flag="$pie_flag $arg"
+ func_append pie_flag " $arg"
continue
;;
-shared | -static | -prefer-pic | -prefer-non-pic)
- later="$later $arg"
+ func_append later " $arg"
continue
;;
@@ -1329,15 +2012,14 @@
save_ifs="$IFS"; IFS=','
for arg in $args; do
IFS="$save_ifs"
- func_quote_for_eval "$arg"
- lastarg="$lastarg $func_quote_for_eval_result"
+ func_append_quoted lastarg "$arg"
done
IFS="$save_ifs"
func_stripname ' ' '' "$lastarg"
lastarg=$func_stripname_result
# Add the arguments to base_compile.
- base_compile="$base_compile $lastarg"
+ func_append base_compile " $lastarg"
continue
;;
@@ -1353,8 +2035,7 @@
esac # case $arg_mode
# Aesthetically quote the previous argument.
- func_quote_for_eval "$lastarg"
- base_compile="$base_compile $func_quote_for_eval_result"
+ func_append_quoted base_compile "$lastarg"
done # for arg
case $arg_mode in
@@ -1379,7 +2060,7 @@
*.[cCFSifmso] | \
*.ada | *.adb | *.ads | *.asm | \
*.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \
- *.[fF][09]? | *.for | *.java | *.obj | *.sx | *.cu | *.cup)
+ *.[fF][09]? | *.for | *.java | *.go | *.obj | *.sx | *.cu | *.cup)
func_xform "$libobj"
libobj=$func_xform_result
;;
@@ -1485,17 +2166,16 @@
$opt_dry_run || $RM $removelist
exit $EXIT_FAILURE
fi
- removelist="$removelist $output_obj"
+ func_append removelist " $output_obj"
$ECHO "$srcfile" > "$lockfile"
fi
$opt_dry_run || $RM $removelist
- removelist="$removelist $lockfile"
+ func_append removelist " $lockfile"
trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15
- if test -n "$fix_srcfile_path"; then
- eval srcfile=\"$fix_srcfile_path\"
- fi
+ func_to_tool_file "$srcfile" func_convert_file_msys_to_w32
+ srcfile=$func_to_tool_file_result
func_quote_for_eval "$srcfile"
qsrcfile=$func_quote_for_eval_result
@@ -1515,7 +2195,7 @@
if test -z "$output_obj"; then
# Place PIC objects in $objdir
- command="$command -o $lobj"
+ func_append command " -o $lobj"
fi
func_show_eval_locale "$command" \
@@ -1562,11 +2242,11 @@
command="$base_compile $qsrcfile $pic_flag"
fi
if test "$compiler_c_o" = yes; then
- command="$command -o $obj"
+ func_append command " -o $obj"
fi
# Suppress compiler output if we already did a PIC compilation.
- command="$command$suppress_output"
+ func_append command "$suppress_output"
func_show_eval_locale "$command" \
'$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE'
@@ -1611,13 +2291,13 @@
}
$opt_help || {
- test "$mode" = compile && func_mode_compile ${1+"$@"}
+ test "$opt_mode" = compile && func_mode_compile ${1+"$@"}
}
func_mode_help ()
{
# We need to display help for each of the modes.
- case $mode in
+ case $opt_mode in
"")
# Generic help is extracted from the usage comments
# at the start of this file.
@@ -1793,7 +2473,7 @@
;;
*)
- func_fatal_help "invalid operation mode \`$mode'"
+ func_fatal_help "invalid operation mode \`$opt_mode'"
;;
esac
@@ -1808,13 +2488,13 @@
else
{
func_help noexit
- for mode in compile link execute install finish uninstall clean; do
+ for opt_mode in compile link execute install finish uninstall clean; do
func_mode_help
done
} | sed -n '1p; 2,$s/^Usage:/ or: /p'
{
func_help noexit
- for mode in compile link execute install finish uninstall clean; do
+ for opt_mode in compile link execute install finish uninstall clean; do
echo
func_mode_help
done
@@ -1843,13 +2523,16 @@
func_fatal_help "you must specify a COMMAND"
# Handle -dlopen flags immediately.
- for file in $execute_dlfiles; do
+ for file in $opt_dlopen; do
test -f "$file" \
|| func_fatal_help "\`$file' is not a file"
dir=
case $file in
*.la)
+ func_resolve_sysroot "$file"
+ file=$func_resolve_sysroot_result
+
# Check to see that this really is a libtool archive.
func_lalib_unsafe_p "$file" \
|| func_fatal_help "\`$lib' is not a valid libtool archive"
@@ -1871,7 +2554,7 @@
dir="$func_dirname_result"
if test -f "$dir/$objdir/$dlname"; then
- dir="$dir/$objdir"
+ func_append dir "/$objdir"
else
if test ! -f "$dir/$dlname"; then
func_fatal_error "cannot find \`$dlname' in \`$dir' or \`$dir/$objdir'"
@@ -1928,8 +2611,7 @@
;;
esac
# Quote arguments (to preserve shell metacharacters).
- func_quote_for_eval "$file"
- args="$args $func_quote_for_eval_result"
+ func_append_quoted args "$file"
done
if test "X$opt_dry_run" = Xfalse; then
@@ -1961,22 +2643,59 @@
fi
}
-test "$mode" = execute && func_mode_execute ${1+"$@"}
+test "$opt_mode" = execute && func_mode_execute ${1+"$@"}
# func_mode_finish arg...
func_mode_finish ()
{
$opt_debug
- libdirs="$nonopt"
+ libs=
+ libdirs=
admincmds=
- if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then
- for dir
- do
- libdirs="$libdirs $dir"
- done
+ for opt in "$nonopt" ${1+"$@"}
+ do
+ if test -d "$opt"; then
+ func_append libdirs " $opt"
+ elif test -f "$opt"; then
+ if func_lalib_unsafe_p "$opt"; then
+ func_append libs " $opt"
+ else
+ func_warning "\`$opt' is not a valid libtool archive"
+ fi
+
+ else
+ func_fatal_error "invalid argument \`$opt'"
+ fi
+ done
+
+ if test -n "$libs"; then
+ if test -n "$lt_sysroot"; then
+ sysroot_regex=`$ECHO "$lt_sysroot" | $SED "$sed_make_literal_regex"`
+ sysroot_cmd="s/\([ ']\)$sysroot_regex/\1/g;"
+ else
+ sysroot_cmd=
+ fi
+
+ # Remove sysroot references
+ if $opt_dry_run; then
+ for lib in $libs; do
+ echo "removing references to $lt_sysroot and \`=' prefixes from $lib"
+ done
+ else
+ tmpdir=`func_mktempdir`
+ for lib in $libs; do
+ sed -e "${sysroot_cmd} s/\([ ']-[LR]\)=/\1/g; s/\([ ']\)=/\1/g" $lib \
+ > $tmpdir/tmp-la
+ mv -f $tmpdir/tmp-la $lib
+ done
+ ${RM}r "$tmpdir"
+ fi
+ fi
+
+ if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then
for libdir in $libdirs; do
if test -n "$finish_cmds"; then
# Do each command in the finish commands.
@@ -1986,7 +2705,7 @@
if test -n "$finish_eval"; then
# Do the single finish_eval.
eval cmds=\"$finish_eval\"
- $opt_dry_run || eval "$cmds" || admincmds="$admincmds
+ $opt_dry_run || eval "$cmds" || func_append admincmds "
$cmds"
fi
done
@@ -1995,53 +2714,55 @@
# Exit here if they wanted silent mode.
$opt_silent && exit $EXIT_SUCCESS
- echo "----------------------------------------------------------------------"
- echo "Libraries have been installed in:"
- for libdir in $libdirs; do
- $ECHO " $libdir"
- done
- echo
- echo "If you ever happen to want to link against installed libraries"
- echo "in a given directory, LIBDIR, you must either use libtool, and"
- echo "specify the full pathname of the library, or use the \`-LLIBDIR'"
- echo "flag during linking and do at least one of the following:"
- if test -n "$shlibpath_var"; then
- echo " - add LIBDIR to the \`$shlibpath_var' environment variable"
- echo " during execution"
- fi
- if test -n "$runpath_var"; then
- echo " - add LIBDIR to the \`$runpath_var' environment variable"
- echo " during linking"
- fi
- if test -n "$hardcode_libdir_flag_spec"; then
- libdir=LIBDIR
- eval flag=\"$hardcode_libdir_flag_spec\"
+ if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then
+ echo "----------------------------------------------------------------------"
+ echo "Libraries have been installed in:"
+ for libdir in $libdirs; do
+ $ECHO " $libdir"
+ done
+ echo
+ echo "If you ever happen to want to link against installed libraries"
+ echo "in a given directory, LIBDIR, you must either use libtool, and"
+ echo "specify the full pathname of the library, or use the \`-LLIBDIR'"
+ echo "flag during linking and do at least one of the following:"
+ if test -n "$shlibpath_var"; then
+ echo " - add LIBDIR to the \`$shlibpath_var' environment variable"
+ echo " during execution"
+ fi
+ if test -n "$runpath_var"; then
+ echo " - add LIBDIR to the \`$runpath_var' environment variable"
+ echo " during linking"
+ fi
+ if test -n "$hardcode_libdir_flag_spec"; then
+ libdir=LIBDIR
+ eval flag=\"$hardcode_libdir_flag_spec\"
- $ECHO " - use the \`$flag' linker flag"
- fi
- if test -n "$admincmds"; then
- $ECHO " - have your system administrator run these commands:$admincmds"
- fi
- if test -f /etc/ld.so.conf; then
- echo " - have your system administrator add LIBDIR to \`/etc/ld.so.conf'"
- fi
- echo
+ $ECHO " - use the \`$flag' linker flag"
+ fi
+ if test -n "$admincmds"; then
+ $ECHO " - have your system administrator run these commands:$admincmds"
+ fi
+ if test -f /etc/ld.so.conf; then
+ echo " - have your system administrator add LIBDIR to \`/etc/ld.so.conf'"
+ fi
+ echo
- echo "See any operating system documentation about shared libraries for"
- case $host in
- solaris2.[6789]|solaris2.1[0-9])
- echo "more information, such as the ld(1), crle(1) and ld.so(8) manual"
- echo "pages."
- ;;
- *)
- echo "more information, such as the ld(1) and ld.so(8) manual pages."
- ;;
- esac
- echo "----------------------------------------------------------------------"
+ echo "See any operating system documentation about shared libraries for"
+ case $host in
+ solaris2.[6789]|solaris2.1[0-9])
+ echo "more information, such as the ld(1), crle(1) and ld.so(8) manual"
+ echo "pages."
+ ;;
+ *)
+ echo "more information, such as the ld(1) and ld.so(8) manual pages."
+ ;;
+ esac
+ echo "----------------------------------------------------------------------"
+ fi
exit $EXIT_SUCCESS
}
-test "$mode" = finish && func_mode_finish ${1+"$@"}
+test "$opt_mode" = finish && func_mode_finish ${1+"$@"}
# func_mode_install arg...
@@ -2066,7 +2787,7 @@
# The real first argument should be the name of the installation program.
# Aesthetically quote it.
func_quote_for_eval "$arg"
- install_prog="$install_prog$func_quote_for_eval_result"
+ func_append install_prog "$func_quote_for_eval_result"
install_shared_prog=$install_prog
case " $install_prog " in
*[\\\ /]cp\ *) install_cp=: ;;
@@ -2086,7 +2807,7 @@
do
arg2=
if test -n "$dest"; then
- files="$files $dest"
+ func_append files " $dest"
dest=$arg
continue
fi
@@ -2124,11 +2845,11 @@
# Aesthetically quote the argument.
func_quote_for_eval "$arg"
- install_prog="$install_prog $func_quote_for_eval_result"
+ func_append install_prog " $func_quote_for_eval_result"
if test -n "$arg2"; then
func_quote_for_eval "$arg2"
fi
- install_shared_prog="$install_shared_prog $func_quote_for_eval_result"
+ func_append install_shared_prog " $func_quote_for_eval_result"
done
test -z "$install_prog" && \
@@ -2140,7 +2861,7 @@
if test -n "$install_override_mode" && $no_mode; then
if $install_cp; then :; else
func_quote_for_eval "$install_override_mode"
- install_shared_prog="$install_shared_prog -m $func_quote_for_eval_result"
+ func_append install_shared_prog " -m $func_quote_for_eval_result"
fi
fi
@@ -2198,10 +2919,13 @@
case $file in
*.$libext)
# Do the static libraries later.
- staticlibs="$staticlibs $file"
+ func_append staticlibs " $file"
;;
*.la)
+ func_resolve_sysroot "$file"
+ file=$func_resolve_sysroot_result
+
# Check to see that this really is a libtool archive.
func_lalib_unsafe_p "$file" \
|| func_fatal_help "\`$file' is not a valid libtool archive"
@@ -2215,19 +2939,19 @@
if test "X$destdir" = "X$libdir"; then
case "$current_libdirs " in
*" $libdir "*) ;;
- *) current_libdirs="$current_libdirs $libdir" ;;
+ *) func_append current_libdirs " $libdir" ;;
esac
else
# Note the libdir as a future libdir.
case "$future_libdirs " in
*" $libdir "*) ;;
- *) future_libdirs="$future_libdirs $libdir" ;;
+ *) func_append future_libdirs " $libdir" ;;
esac
fi
func_dirname "$file" "/" ""
dir="$func_dirname_result"
- dir="$dir$objdir"
+ func_append dir "$objdir"
if test -n "$relink_command"; then
# Determine the prefix the user has applied to our future dir.
@@ -2304,7 +3028,7 @@
func_show_eval "$install_prog $instname $destdir/$name" 'exit $?'
# Maybe install the static library, too.
- test -n "$old_library" && staticlibs="$staticlibs $dir/$old_library"
+ test -n "$old_library" && func_append staticlibs " $dir/$old_library"
;;
*.lo)
@@ -2478,11 +3202,13 @@
# Set up the ranlib parameters.
oldlib="$destdir/$name"
+ func_to_tool_file "$oldlib" func_convert_file_msys_to_w32
+ tool_oldlib=$func_to_tool_file_result
func_show_eval "$install_prog \$file \$oldlib" 'exit $?'
if test -n "$stripme" && test -n "$old_striplib"; then
- func_show_eval "$old_striplib $oldlib" 'exit $?'
+ func_show_eval "$old_striplib $tool_oldlib" 'exit $?'
fi
# Do each command in the postinstall commands.
@@ -2501,7 +3227,7 @@
fi
}
-test "$mode" = install && func_mode_install ${1+"$@"}
+test "$opt_mode" = install && func_mode_install ${1+"$@"}
# func_generate_dlsyms outputname originator pic_p
@@ -2548,6 +3274,18 @@
#pragma GCC diagnostic ignored \"-Wstrict-prototypes\"
#endif
+/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */
+#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE)
+/* DATA imports from DLLs on WIN32 con't be const, because runtime
+ relocations are performed -- see ld's documentation on pseudo-relocs. */
+# define LT_DLSYM_CONST
+#elif defined(__osf__)
+/* This system does not cope well with relocations in const data. */
+# define LT_DLSYM_CONST
+#else
+# define LT_DLSYM_CONST const
+#endif
+
/* External symbol declarations for the compiler. */\
"
@@ -2559,8 +3297,9 @@
# Add our own program objects to the symbol list.
progfiles=`$ECHO "$objs$old_deplibs" | $SP2NL | $SED "$lo2o" | $NL2SP`
for progfile in $progfiles; do
- func_verbose "extracting global C symbols from \`$progfile'"
- $opt_dry_run || eval "$NM $progfile | $global_symbol_pipe >> '$nlist'"
+ func_to_tool_file "$progfile" func_convert_file_msys_to_w32
+ func_verbose "extracting global C symbols from \`$func_to_tool_file_result'"
+ $opt_dry_run || eval "$NM $func_to_tool_file_result | $global_symbol_pipe >> '$nlist'"
done
if test -n "$exclude_expsyms"; then
@@ -2609,10 +3348,52 @@
func_verbose "extracting global C symbols from \`$dlprefile'"
func_basename "$dlprefile"
name="$func_basename_result"
- $opt_dry_run || {
- eval '$ECHO ": $name " >> "$nlist"'
- eval "$NM $dlprefile 2>/dev/null | $global_symbol_pipe >> '$nlist'"
- }
+ case $host in
+ *cygwin* | *mingw* | *cegcc* )
+ # if an import library, we need to obtain dlname
+ if func_win32_import_lib_p "$dlprefile"; then
+ func_tr_sh "$dlprefile"
+ eval "curr_lafile=\$libfile_$func_tr_sh_result"
+ dlprefile_dlbasename=""
+ if test -n "$curr_lafile" && func_lalib_p "$curr_lafile"; then
+ # Use subshell, to avoid clobbering current variable values
+ dlprefile_dlname=`source "$curr_lafile" && echo "$dlname"`
+ if test -n "$dlprefile_dlname" ; then
+ func_basename "$dlprefile_dlname"
+ dlprefile_dlbasename="$func_basename_result"
+ else
+ # no lafile. user explicitly requested -dlpreopen <import library>.
+ $sharedlib_from_linklib_cmd "$dlprefile"
+ dlprefile_dlbasename=$sharedlib_from_linklib_result
+ fi
+ fi
+ $opt_dry_run || {
+ if test -n "$dlprefile_dlbasename" ; then
+ eval '$ECHO ": $dlprefile_dlbasename" >> "$nlist"'
+ else
+ func_warning "Could not compute DLL name from $name"
+ eval '$ECHO ": $name " >> "$nlist"'
+ fi
+ func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32
+ eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe |
+ $SED -e '/I __imp/d' -e 's/I __nm_/D /;s/_nm__//' >> '$nlist'"
+ }
+ else # not an import lib
+ $opt_dry_run || {
+ eval '$ECHO ": $name " >> "$nlist"'
+ func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32
+ eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'"
+ }
+ fi
+ ;;
+ *)
+ $opt_dry_run || {
+ eval '$ECHO ": $name " >> "$nlist"'
+ func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32
+ eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'"
+ }
+ ;;
+ esac
done
$opt_dry_run || {
@@ -2650,26 +3431,9 @@
const char *name;
void *address;
} lt_dlsymlist;
-"
- case $host in
- *cygwin* | *mingw* | *cegcc* )
- echo >> "$output_objdir/$my_dlsyms" "\
-/* DATA imports from DLLs on WIN32 con't be const, because
- runtime relocations are performed -- see ld's documentation
- on pseudo-relocs. */"
- lt_dlsym_const= ;;
- *osf5*)
- echo >> "$output_objdir/$my_dlsyms" "\
-/* This system does not cope well with relocations in const data */"
- lt_dlsym_const= ;;
- *)
- lt_dlsym_const=const ;;
- esac
-
- echo >> "$output_objdir/$my_dlsyms" "\
-extern $lt_dlsym_const lt_dlsymlist
+extern LT_DLSYM_CONST lt_dlsymlist
lt_${my_prefix}_LTX_preloaded_symbols[];
-$lt_dlsym_const lt_dlsymlist
+LT_DLSYM_CONST lt_dlsymlist
lt_${my_prefix}_LTX_preloaded_symbols[] =
{\
{ \"$my_originator\", (void *) 0 },"
@@ -2709,7 +3473,7 @@
# linked before any other PIC object. But we must not use
# pic_flag when linking with -static. The problem exists in
# FreeBSD 2.2.6 and is fixed in FreeBSD 3.1.
- *-*-freebsd2*|*-*-freebsd3.0*|*-*-freebsdelf3.0*)
+ *-*-freebsd2.*|*-*-freebsd3.0*|*-*-freebsdelf3.0*)
pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;;
*-*-hpux*)
pic_flag_for_symtable=" $pic_flag" ;;
@@ -2725,7 +3489,7 @@
for arg in $LTCFLAGS; do
case $arg in
-pie | -fpie | -fPIE) ;;
- *) symtab_cflags="$symtab_cflags $arg" ;;
+ *) func_append symtab_cflags " $arg" ;;
esac
done
@@ -2788,7 +3552,8 @@
# Keep the egrep pattern in sync with the one in _LT_CHECK_MAGIC_METHOD.
if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null |
$EGREP 'file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' >/dev/null; then
- win32_nmres=`eval $NM -f posix -A $1 |
+ func_to_tool_file "$1" func_convert_file_msys_to_w32
+ win32_nmres=`eval $NM -f posix -A \"$func_to_tool_file_result\" |
$SED -n -e '
1,100{
/ I /{
@@ -2817,6 +3582,131 @@
$ECHO "$win32_libid_type"
}
+# func_cygming_dll_for_implib ARG
+#
+# Platform-specific function to extract the
+# name of the DLL associated with the specified
+# import library ARG.
+# Invoked by eval'ing the libtool variable
+# $sharedlib_from_linklib_cmd
+# Result is available in the variable
+# $sharedlib_from_linklib_result
+func_cygming_dll_for_implib ()
+{
+ $opt_debug
+ sharedlib_from_linklib_result=`$DLLTOOL --identify-strict --identify "$1"`
+}
+
+# func_cygming_dll_for_implib_fallback_core SECTION_NAME LIBNAMEs
+#
+# The is the core of a fallback implementation of a
+# platform-specific function to extract the name of the
+# DLL associated with the specified import library LIBNAME.
+#
+# SECTION_NAME is either .idata$6 or .idata$7, depending
+# on the platform and compiler that created the implib.
+#
+# Echos the name of the DLL associated with the
+# specified import library.
+func_cygming_dll_for_implib_fallback_core ()
+{
+ $opt_debug
+ match_literal=`$ECHO "$1" | $SED "$sed_make_literal_regex"`
+ $OBJDUMP -s --section "$1" "$2" 2>/dev/null |
+ $SED '/^Contents of section '"$match_literal"':/{
+ # Place marker at beginning of archive member dllname section
+ s/.*/====MARK====/
+ p
+ d
+ }
+ # These lines can sometimes be longer than 43 characters, but
+ # are always uninteresting
+ /:[ ]*file format pe[i]\{,1\}-/d
+ /^In archive [^:]*:/d
+ # Ensure marker is printed
+ /^====MARK====/p
+ # Remove all lines with less than 43 characters
+ /^.\{43\}/!d
+ # From remaining lines, remove first 43 characters
+ s/^.\{43\}//' |
+ $SED -n '
+ # Join marker and all lines until next marker into a single line
+ /^====MARK====/ b para
+ H
+ $ b para
+ b
+ :para
+ x
+ s/\n//g
+ # Remove the marker
+ s/^====MARK====//
+ # Remove trailing dots and whitespace
+ s/[\. \t]*$//
+ # Print
+ /./p' |
+ # we now have a list, one entry per line, of the stringified
+ # contents of the appropriate section of all members of the
+ # archive which possess that section. Heuristic: eliminate
+ # all those which have a first or second character that is
+ # a '.' (that is, objdump's representation of an unprintable
+ # character.) This should work for all archives with less than
+ # 0x302f exports -- but will fail for DLLs whose name actually
+ # begins with a literal '.' or a single character followed by
+ # a '.'.
+ #
+ # Of those that remain, print the first one.
+ $SED -e '/^\./d;/^.\./d;q'
+}
+
+# func_cygming_gnu_implib_p ARG
+# This predicate returns with zero status (TRUE) if
+# ARG is a GNU/binutils-style import library. Returns
+# with nonzero status (FALSE) otherwise.
+func_cygming_gnu_implib_p ()
+{
+ $opt_debug
+ func_to_tool_file "$1" func_convert_file_msys_to_w32
+ func_cygming_gnu_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $EGREP ' (_head_[A-Za-z0-9_]+_[ad]l*|[A-Za-z0-9_]+_[ad]l*_iname)$'`
+ test -n "$func_cygming_gnu_implib_tmp"
+}
+
+# func_cygming_ms_implib_p ARG
+# This predicate returns with zero status (TRUE) if
+# ARG is an MS-style import library. Returns
+# with nonzero status (FALSE) otherwise.
+func_cygming_ms_implib_p ()
+{
+ $opt_debug
+ func_to_tool_file "$1" func_convert_file_msys_to_w32
+ func_cygming_ms_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $GREP '_NULL_IMPORT_DESCRIPTOR'`
+ test -n "$func_cygming_ms_implib_tmp"
+}
+
+# func_cygming_dll_for_implib_fallback ARG
+# Platform-specific function to extract the
+# name of the DLL associated with the specified
+# import library ARG.
+#
+# This fallback implementation is for use when $DLLTOOL
+# does not support the --identify-strict option.
+# Invoked by eval'ing the libtool variable
+# $sharedlib_from_linklib_cmd
+# Result is available in the variable
+# $sharedlib_from_linklib_result
+func_cygming_dll_for_implib_fallback ()
+{
+ $opt_debug
+ if func_cygming_gnu_implib_p "$1" ; then
+ # binutils import library
+ sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$7' "$1"`
+ elif func_cygming_ms_implib_p "$1" ; then
+ # ms-generated import library
+ sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$6' "$1"`
+ else
+ # unknown
+ sharedlib_from_linklib_result=""
+ fi
+}
# func_extract_an_archive dir oldlib
@@ -3095,14 +3985,17 @@
# launches target application with the remaining arguments.
func_exec_program ()
{
- for lt_wr_arg
- do
- case \$lt_wr_arg in
- --lt-*) ;;
- *) set x \"\$@\" \"\$lt_wr_arg\"; shift;;
- esac
- shift
- done
+ case \" \$* \" in
+ *\\ --lt-*)
+ for lt_wr_arg
+ do
+ case \$lt_wr_arg in
+ --lt-*) ;;
+ *) set x \"\$@\" \"\$lt_wr_arg\"; shift;;
+ esac
+ shift
+ done ;;
+ esac
func_exec_program_core \${1+\"\$@\"}
}
@@ -3195,6 +4088,18 @@
if test -f \"\$progdir/\$program\"; then"
+ # fixup the dll searchpath if we need to.
+ #
+ # Fix the DLL searchpath if we need to. Do this before prepending
+ # to shlibpath, because on Windows, both are PATH and uninstalled
+ # libraries must come first.
+ if test -n "$dllsearchpath"; then
+ $ECHO "\
+ # Add the dll search path components to the executable PATH
+ PATH=$dllsearchpath:\$PATH
+"
+ fi
+
# Export our shlibpath_var if we have one.
if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
$ECHO "\
@@ -3209,14 +4114,6 @@
"
fi
- # fixup the dll searchpath if we need to.
- if test -n "$dllsearchpath"; then
- $ECHO "\
- # Add the dll search path components to the executable PATH
- PATH=$dllsearchpath:\$PATH
-"
- fi
-
$ECHO "\
if test \"\$libtool_execute_magic\" != \"$magic\"; then
# Run the actual program with our arguments.
@@ -3234,166 +4131,6 @@
}
-# func_to_host_path arg
-#
-# Convert paths to host format when used with build tools.
-# Intended for use with "native" mingw (where libtool itself
-# is running under the msys shell), or in the following cross-
-# build environments:
-# $build $host
-# mingw (msys) mingw [e.g. native]
-# cygwin mingw
-# *nix + wine mingw
-# where wine is equipped with the `winepath' executable.
-# In the native mingw case, the (msys) shell automatically
-# converts paths for any non-msys applications it launches,
-# but that facility isn't available from inside the cwrapper.
-# Similar accommodations are necessary for $host mingw and
-# $build cygwin. Calling this function does no harm for other
-# $host/$build combinations not listed above.
-#
-# ARG is the path (on $build) that should be converted to
-# the proper representation for $host. The result is stored
-# in $func_to_host_path_result.
-func_to_host_path ()
-{
- func_to_host_path_result="$1"
- if test -n "$1"; then
- case $host in
- *mingw* )
- lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
- case $build in
- *mingw* ) # actually, msys
- # awkward: cmd appends spaces to result
- func_to_host_path_result=`( cmd //c echo "$1" ) 2>/dev/null |
- $SED -e 's/[ ]*$//' -e "$lt_sed_naive_backslashify"`
- ;;
- *cygwin* )
- func_to_host_path_result=`cygpath -w "$1" |
- $SED -e "$lt_sed_naive_backslashify"`
- ;;
- * )
- # Unfortunately, winepath does not exit with a non-zero
- # error code, so we are forced to check the contents of
- # stdout. On the other hand, if the command is not
- # found, the shell will set an exit code of 127 and print
- # *an error message* to stdout. So we must check for both
- # error code of zero AND non-empty stdout, which explains
- # the odd construction:
- func_to_host_path_tmp1=`winepath -w "$1" 2>/dev/null`
- if test "$?" -eq 0 && test -n "${func_to_host_path_tmp1}"; then
- func_to_host_path_result=`$ECHO "$func_to_host_path_tmp1" |
- $SED -e "$lt_sed_naive_backslashify"`
- else
- # Allow warning below.
- func_to_host_path_result=
- fi
- ;;
- esac
- if test -z "$func_to_host_path_result" ; then
- func_error "Could not determine host path corresponding to"
- func_error " \`$1'"
- func_error "Continuing, but uninstalled executables may not work."
- # Fallback:
- func_to_host_path_result="$1"
- fi
- ;;
- esac
- fi
-}
-# end: func_to_host_path
-
-# func_to_host_pathlist arg
-#
-# Convert pathlists to host format when used with build tools.
-# See func_to_host_path(), above. This function supports the
-# following $build/$host combinations (but does no harm for
-# combinations not listed here):
-# $build $host
-# mingw (msys) mingw [e.g. native]
-# cygwin mingw
-# *nix + wine mingw
-#
-# Path separators are also converted from $build format to
-# $host format. If ARG begins or ends with a path separator
-# character, it is preserved (but converted to $host format)
-# on output.
-#
-# ARG is a pathlist (on $build) that should be converted to
-# the proper representation on $host. The result is stored
-# in $func_to_host_pathlist_result.
-func_to_host_pathlist ()
-{
- func_to_host_pathlist_result="$1"
- if test -n "$1"; then
- case $host in
- *mingw* )
- lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
- # Remove leading and trailing path separator characters from
- # ARG. msys behavior is inconsistent here, cygpath turns them
- # into '.;' and ';.', and winepath ignores them completely.
- func_stripname : : "$1"
- func_to_host_pathlist_tmp1=$func_stripname_result
- case $build in
- *mingw* ) # Actually, msys.
- # Awkward: cmd appends spaces to result.
- func_to_host_pathlist_result=`
- ( cmd //c echo "$func_to_host_pathlist_tmp1" ) 2>/dev/null |
- $SED -e 's/[ ]*$//' -e "$lt_sed_naive_backslashify"`
- ;;
- *cygwin* )
- func_to_host_pathlist_result=`cygpath -w -p "$func_to_host_pathlist_tmp1" |
- $SED -e "$lt_sed_naive_backslashify"`
- ;;
- * )
- # unfortunately, winepath doesn't convert pathlists
- func_to_host_pathlist_result=""
- func_to_host_pathlist_oldIFS=$IFS
- IFS=:
- for func_to_host_pathlist_f in $func_to_host_pathlist_tmp1 ; do
- IFS=$func_to_host_pathlist_oldIFS
- if test -n "$func_to_host_pathlist_f" ; then
- func_to_host_path "$func_to_host_pathlist_f"
- if test -n "$func_to_host_path_result" ; then
- if test -z "$func_to_host_pathlist_result" ; then
- func_to_host_pathlist_result="$func_to_host_path_result"
- else
- func_append func_to_host_pathlist_result ";$func_to_host_path_result"
- fi
- fi
- fi
- done
- IFS=$func_to_host_pathlist_oldIFS
- ;;
- esac
- if test -z "$func_to_host_pathlist_result"; then
- func_error "Could not determine the host path(s) corresponding to"
- func_error " \`$1'"
- func_error "Continuing, but uninstalled executables may not work."
- # Fallback. This may break if $1 contains DOS-style drive
- # specifications. The fix is not to complicate the expression
- # below, but for the user to provide a working wine installation
- # with winepath so that path translation in the cross-to-mingw
- # case works properly.
- lt_replace_pathsep_nix_to_dos="s|:|;|g"
- func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp1" |\
- $SED -e "$lt_replace_pathsep_nix_to_dos"`
- fi
- # Now, add the leading and trailing path separators back
- case "$1" in
- :* ) func_to_host_pathlist_result=";$func_to_host_pathlist_result"
- ;;
- esac
- case "$1" in
- *: ) func_append func_to_host_pathlist_result ";"
- ;;
- esac
- ;;
- esac
- fi
-}
-# end: func_to_host_pathlist
-
# func_emit_cwrapperexe_src
# emit the source code for a wrapper executable on stdout
# Must ONLY be called from within func_mode_link because
@@ -3563,14 +4300,14 @@
EOF
cat <<EOF
-const char * MAGIC_EXE = "$magic_exe";
+volatile const char * MAGIC_EXE = "$magic_exe";
const char * LIB_PATH_VARNAME = "$shlibpath_var";
EOF
if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
- func_to_host_pathlist "$temp_rpath"
+ func_to_host_path "$temp_rpath"
cat <<EOF
-const char * LIB_PATH_VALUE = "$func_to_host_pathlist_result";
+const char * LIB_PATH_VALUE = "$func_to_host_path_result";
EOF
else
cat <<"EOF"
@@ -3579,10 +4316,10 @@
fi
if test -n "$dllsearchpath"; then
- func_to_host_pathlist "$dllsearchpath:"
+ func_to_host_path "$dllsearchpath:"
cat <<EOF
const char * EXE_PATH_VARNAME = "PATH";
-const char * EXE_PATH_VALUE = "$func_to_host_pathlist_result";
+const char * EXE_PATH_VALUE = "$func_to_host_path_result";
EOF
else
cat <<"EOF"
@@ -3765,8 +4502,12 @@
lt_setenv ("BIN_SH", "xpg4"); /* for Tru64 */
lt_setenv ("DUALCASE", "1"); /* for MSK sh */
- lt_update_lib_path (LIB_PATH_VARNAME, LIB_PATH_VALUE);
+ /* Update the DLL searchpath. EXE_PATH_VALUE ($dllsearchpath) must
+ be prepended before (that is, appear after) LIB_PATH_VALUE ($temp_rpath)
+ because on Windows, both *_VARNAMEs are PATH but uninstalled
+ libraries must come first. */
lt_update_exe_path (EXE_PATH_VARNAME, EXE_PATH_VALUE);
+ lt_update_lib_path (LIB_PATH_VARNAME, LIB_PATH_VALUE);
lt_debugprintf (__FILE__, __LINE__, "(main) lt_argv_zero: %s\n",
nonnull (lt_argv_zero));
@@ -4322,9 +5063,15 @@
{
EOF
func_emit_wrapper yes |
- $SED -e 's/\([\\"]\)/\\\1/g' \
- -e 's/^/ fputs ("/' -e 's/$/\\n", f);/'
-
+ $SED -n -e '
+s/^\(.\{79\}\)\(..*\)/\1\
+\2/
+h
+s/\([\\"]\)/\\\1/g
+s/$/\\n/
+s/\([^\n]*\).*/ fputs ("\1", f);/p
+g
+D'
cat <<"EOF"
}
EOF
@@ -4515,9 +5262,9 @@
;;
*)
if test "$prev" = dlfiles; then
- dlfiles="$dlfiles $arg"
+ func_append dlfiles " $arg"
else
- dlprefiles="$dlprefiles $arg"
+ func_append dlprefiles " $arg"
fi
prev=
continue
@@ -4541,7 +5288,7 @@
*-*-darwin*)
case "$deplibs " in
*" $qarg.ltframework "*) ;;
- *) deplibs="$deplibs $qarg.ltframework" # this is fixed later
+ *) func_append deplibs " $qarg.ltframework" # this is fixed later
;;
esac
;;
@@ -4560,7 +5307,7 @@
moreargs=
for fil in `cat "$save_arg"`
do
-# moreargs="$moreargs $fil"
+# func_append moreargs " $fil"
arg=$fil
# A libtool-controlled object.
@@ -4589,7 +5336,7 @@
if test "$prev" = dlfiles; then
if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
- dlfiles="$dlfiles $pic_object"
+ func_append dlfiles " $pic_object"
prev=
continue
else
@@ -4601,7 +5348,7 @@
# CHECK ME: I think I busted this. -Ossama
if test "$prev" = dlprefiles; then
# Preload the old-style object.
- dlprefiles="$dlprefiles $pic_object"
+ func_append dlprefiles " $pic_object"
prev=
fi
@@ -4671,12 +5418,12 @@
if test "$prev" = rpath; then
case "$rpath " in
*" $arg "*) ;;
- *) rpath="$rpath $arg" ;;
+ *) func_append rpath " $arg" ;;
esac
else
case "$xrpath " in
*" $arg "*) ;;
- *) xrpath="$xrpath $arg" ;;
+ *) func_append xrpath " $arg" ;;
esac
fi
prev=
@@ -4688,28 +5435,28 @@
continue
;;
weak)
- weak_libs="$weak_libs $arg"
+ func_append weak_libs " $arg"
prev=
continue
;;
xcclinker)
- linker_flags="$linker_flags $qarg"
- compiler_flags="$compiler_flags $qarg"
+ func_append linker_flags " $qarg"
+ func_append compiler_flags " $qarg"
prev=
func_append compile_command " $qarg"
func_append finalize_command " $qarg"
continue
;;
xcompiler)
- compiler_flags="$compiler_flags $qarg"
+ func_append compiler_flags " $qarg"
prev=
func_append compile_command " $qarg"
func_append finalize_command " $qarg"
continue
;;
xlinker)
- linker_flags="$linker_flags $qarg"
- compiler_flags="$compiler_flags $wl$qarg"
+ func_append linker_flags " $qarg"
+ func_append compiler_flags " $wl$qarg"
prev=
func_append compile_command " $wl$qarg"
func_append finalize_command " $wl$qarg"
@@ -4800,15 +5547,16 @@
;;
-L*)
- func_stripname '-L' '' "$arg"
- dir=$func_stripname_result
- if test -z "$dir"; then
+ func_stripname "-L" '' "$arg"
+ if test -z "$func_stripname_result"; then
if test "$#" -gt 0; then
func_fatal_error "require no space between \`-L' and \`$1'"
else
func_fatal_error "need path for \`-L' option"
fi
fi
+ func_resolve_sysroot "$func_stripname_result"
+ dir=$func_resolve_sysroot_result
# We need an absolute path.
case $dir in
[\\/]* | [A-Za-z]:[\\/]*) ;;
@@ -4820,10 +5568,16 @@
;;
esac
case "$deplibs " in
- *" -L$dir "*) ;;
+ *" -L$dir "* | *" $arg "*)
+ # Will only happen for absolute or sysroot arguments
+ ;;
*)
- deplibs="$deplibs -L$dir"
- lib_search_path="$lib_search_path $dir"
+ # Preserve sysroot, but never include relative directories
+ case $dir in
+ [\\/]* | [A-Za-z]:[\\/]* | =*) func_append deplibs " $arg" ;;
+ *) func_append deplibs " -L$dir" ;;
+ esac
+ func_append lib_search_path " $dir"
;;
esac
case $host in
@@ -4832,12 +5586,12 @@
case :$dllsearchpath: in
*":$dir:"*) ;;
::) dllsearchpath=$dir;;
- *) dllsearchpath="$dllsearchpath:$dir";;
+ *) func_append dllsearchpath ":$dir";;
esac
case :$dllsearchpath: in
*":$testbindir:"*) ;;
::) dllsearchpath=$testbindir;;
- *) dllsearchpath="$dllsearchpath:$testbindir";;
+ *) func_append dllsearchpath ":$testbindir";;
esac
;;
esac
@@ -4861,7 +5615,7 @@
;;
*-*-rhapsody* | *-*-darwin1.[012])
# Rhapsody C and math libraries are in the System framework
- deplibs="$deplibs System.ltframework"
+ func_append deplibs " System.ltframework"
continue
;;
*-*-sco3.2v5* | *-*-sco5v6*)
@@ -4881,7 +5635,7 @@
;;
esac
fi
- deplibs="$deplibs $arg"
+ func_append deplibs " $arg"
continue
;;
@@ -4893,21 +5647,22 @@
# Tru64 UNIX uses -model [arg] to determine the layout of C++
# classes, name mangling, and exception handling.
# Darwin uses the -arch flag to determine output architecture.
- -model|-arch|-isysroot)
- compiler_flags="$compiler_flags $arg"
+ -model|-arch|-isysroot|--sysroot)
+ func_append compiler_flags " $arg"
func_append compile_command " $arg"
func_append finalize_command " $arg"
prev=xcompiler
continue
;;
- -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe|-threads)
- compiler_flags="$compiler_flags $arg"
+ -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \
+ |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*)
+ func_append compiler_flags " $arg"
func_append compile_command " $arg"
func_append finalize_command " $arg"
case "$new_inherited_linker_flags " in
*" $arg "*) ;;
- * ) new_inherited_linker_flags="$new_inherited_linker_flags $arg" ;;
+ * ) func_append new_inherited_linker_flags " $arg" ;;
esac
continue
;;
@@ -4974,13 +5729,17 @@
# We need an absolute path.
case $dir in
[\\/]* | [A-Za-z]:[\\/]*) ;;
+ =*)
+ func_stripname '=' '' "$dir"
+ dir=$lt_sysroot$func_stripname_result
+ ;;
*)
func_fatal_error "only absolute run-paths are allowed"
;;
esac
case "$xrpath " in
*" $dir "*) ;;
- *) xrpath="$xrpath $dir" ;;
+ *) func_append xrpath " $dir" ;;
esac
continue
;;
@@ -5033,8 +5792,8 @@
for flag in $args; do
IFS="$save_ifs"
func_quote_for_eval "$flag"
- arg="$arg $func_quote_for_eval_result"
- compiler_flags="$compiler_flags $func_quote_for_eval_result"
+ func_append arg " $func_quote_for_eval_result"
+ func_append compiler_flags " $func_quote_for_eval_result"
done
IFS="$save_ifs"
func_stripname ' ' '' "$arg"
@@ -5049,9 +5808,9 @@
for flag in $args; do
IFS="$save_ifs"
func_quote_for_eval "$flag"
- arg="$arg $wl$func_quote_for_eval_result"
- compiler_flags="$compiler_flags $wl$func_quote_for_eval_result"
- linker_flags="$linker_flags $func_quote_for_eval_result"
+ func_append arg " $wl$func_quote_for_eval_result"
+ func_append compiler_flags " $wl$func_quote_for_eval_result"
+ func_append linker_flags " $func_quote_for_eval_result"
done
IFS="$save_ifs"
func_stripname ' ' '' "$arg"
@@ -5090,13 +5849,16 @@
# -p, -pg, --coverage, -fprofile-* profiling flags for GCC
# @file GCC response files
# -tp=* Portland pgcc target processor selection
+ # --sysroot=* for sysroot support
+ # -O*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization
-64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
- -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*)
+ -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
+ -O*|-flto*|-fwhopr*|-fuse-linker-plugin)
func_quote_for_eval "$arg"
arg="$func_quote_for_eval_result"
func_append compile_command " $arg"
func_append finalize_command " $arg"
- compiler_flags="$compiler_flags $arg"
+ func_append compiler_flags " $arg"
continue
;;
@@ -5108,7 +5870,7 @@
*.$objext)
# A standard object.
- objs="$objs $arg"
+ func_append objs " $arg"
;;
*.lo)
@@ -5139,7 +5901,7 @@
if test "$prev" = dlfiles; then
if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
- dlfiles="$dlfiles $pic_object"
+ func_append dlfiles " $pic_object"
prev=
continue
else
@@ -5151,7 +5913,7 @@
# CHECK ME: I think I busted this. -Ossama
if test "$prev" = dlprefiles; then
# Preload the old-style object.
- dlprefiles="$dlprefiles $pic_object"
+ func_append dlprefiles " $pic_object"
prev=
fi
@@ -5196,24 +5958,25 @@
*.$libext)
# An archive.
- deplibs="$deplibs $arg"
- old_deplibs="$old_deplibs $arg"
+ func_append deplibs " $arg"
+ func_append old_deplibs " $arg"
continue
;;
*.la)
# A libtool-controlled library.
+ func_resolve_sysroot "$arg"
if test "$prev" = dlfiles; then
# This library was specified with -dlopen.
- dlfiles="$dlfiles $arg"
+ func_append dlfiles " $func_resolve_sysroot_result"
prev=
elif test "$prev" = dlprefiles; then
# The library was specified with -dlpreopen.
- dlprefiles="$dlprefiles $arg"
+ func_append dlprefiles " $func_resolve_sysroot_result"
prev=
else
- deplibs="$deplibs $arg"
+ func_append deplibs " $func_resolve_sysroot_result"
fi
continue
;;
@@ -5260,6 +6023,8 @@
func_dirname "$output" "/" ""
output_objdir="$func_dirname_result$objdir"
+ func_to_tool_file "$output_objdir/"
+ tool_output_objdir=$func_to_tool_file_result
# Create the object directory.
func_mkdir_p "$output_objdir"
@@ -5280,12 +6045,12 @@
# Find all interdependent deplibs by searching for libraries
# that are linked more than once (e.g. -la -lb -la)
for deplib in $deplibs; do
- if $opt_duplicate_deps ; then
+ if $opt_preserve_dup_deps ; then
case "$libs " in
- *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ *" $deplib "*) func_append specialdeplibs " $deplib" ;;
esac
fi
- libs="$libs $deplib"
+ func_append libs " $deplib"
done
if test "$linkmode" = lib; then
@@ -5298,9 +6063,9 @@
if $opt_duplicate_compiler_generated_deps; then
for pre_post_dep in $predeps $postdeps; do
case "$pre_post_deps " in
- *" $pre_post_dep "*) specialdeplibs="$specialdeplibs $pre_post_deps" ;;
+ *" $pre_post_dep "*) func_append specialdeplibs " $pre_post_deps" ;;
esac
- pre_post_deps="$pre_post_deps $pre_post_dep"
+ func_append pre_post_deps " $pre_post_dep"
done
fi
pre_post_deps=
@@ -5367,8 +6132,9 @@
for lib in $dlprefiles; do
# Ignore non-libtool-libs
dependency_libs=
+ func_resolve_sysroot "$lib"
case $lib in
- *.la) func_source "$lib" ;;
+ *.la) func_source "$func_resolve_sysroot_result" ;;
esac
# Collect preopened libtool deplibs, except any this library
@@ -5378,7 +6144,7 @@
deplib_base=$func_basename_result
case " $weak_libs " in
*" $deplib_base "*) ;;
- *) deplibs="$deplibs $deplib" ;;
+ *) func_append deplibs " $deplib" ;;
esac
done
done
@@ -5394,16 +6160,17 @@
lib=
found=no
case $deplib in
- -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe|-threads)
+ -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \
+ |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*)
if test "$linkmode,$pass" = "prog,link"; then
compile_deplibs="$deplib $compile_deplibs"
finalize_deplibs="$deplib $finalize_deplibs"
else
- compiler_flags="$compiler_flags $deplib"
+ func_append compiler_flags " $deplib"
if test "$linkmode" = lib ; then
case "$new_inherited_linker_flags " in
*" $deplib "*) ;;
- * ) new_inherited_linker_flags="$new_inherited_linker_flags $deplib" ;;
+ * ) func_append new_inherited_linker_flags " $deplib" ;;
esac
fi
fi
@@ -5488,7 +6255,7 @@
if test "$linkmode" = lib ; then
case "$new_inherited_linker_flags " in
*" $deplib "*) ;;
- * ) new_inherited_linker_flags="$new_inherited_linker_flags $deplib" ;;
+ * ) func_append new_inherited_linker_flags " $deplib" ;;
esac
fi
fi
@@ -5501,7 +6268,8 @@
test "$pass" = conv && continue
newdependency_libs="$deplib $newdependency_libs"
func_stripname '-L' '' "$deplib"
- newlib_search_path="$newlib_search_path $func_stripname_result"
+ func_resolve_sysroot "$func_stripname_result"
+ func_append newlib_search_path " $func_resolve_sysroot_result"
;;
prog)
if test "$pass" = conv; then
@@ -5515,7 +6283,8 @@
finalize_deplibs="$deplib $finalize_deplibs"
fi
func_stripname '-L' '' "$deplib"
- newlib_search_path="$newlib_search_path $func_stripname_result"
+ func_resolve_sysroot "$func_stripname_result"
+ func_append newlib_search_path " $func_resolve_sysroot_result"
;;
*)
func_warning "\`-L' is ignored for archives/objects"
@@ -5526,17 +6295,21 @@
-R*)
if test "$pass" = link; then
func_stripname '-R' '' "$deplib"
- dir=$func_stripname_result
+ func_resolve_sysroot "$func_stripname_result"
+ dir=$func_resolve_sysroot_result
# Make sure the xrpath contains only unique directories.
case "$xrpath " in
*" $dir "*) ;;
- *) xrpath="$xrpath $dir" ;;
+ *) func_append xrpath " $dir" ;;
esac
fi
deplibs="$deplib $deplibs"
continue
;;
- *.la) lib="$deplib" ;;
+ *.la)
+ func_resolve_sysroot "$deplib"
+ lib=$func_resolve_sysroot_result
+ ;;
*.$libext)
if test "$pass" = conv; then
deplibs="$deplib $deplibs"
@@ -5599,11 +6372,11 @@
if test "$pass" = dlpreopen || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then
# If there is no dlopen support or we're linking statically,
# we need to preload.
- newdlprefiles="$newdlprefiles $deplib"
+ func_append newdlprefiles " $deplib"
compile_deplibs="$deplib $compile_deplibs"
finalize_deplibs="$deplib $finalize_deplibs"
else
- newdlfiles="$newdlfiles $deplib"
+ func_append newdlfiles " $deplib"
fi
fi
continue
@@ -5649,7 +6422,7 @@
for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do
case " $new_inherited_linker_flags " in
*" $tmp_inherited_linker_flag "*) ;;
- *) new_inherited_linker_flags="$new_inherited_linker_flags $tmp_inherited_linker_flag";;
+ *) func_append new_inherited_linker_flags " $tmp_inherited_linker_flag";;
esac
done
fi
@@ -5657,8 +6430,8 @@
if test "$linkmode,$pass" = "lib,link" ||
test "$linkmode,$pass" = "prog,scan" ||
{ test "$linkmode" != prog && test "$linkmode" != lib; }; then
- test -n "$dlopen" && dlfiles="$dlfiles $dlopen"
- test -n "$dlpreopen" && dlprefiles="$dlprefiles $dlpreopen"
+ test -n "$dlopen" && func_append dlfiles " $dlopen"
+ test -n "$dlpreopen" && func_append dlprefiles " $dlpreopen"
fi
if test "$pass" = conv; then
@@ -5669,20 +6442,20 @@
func_fatal_error "cannot find name of link library for \`$lib'"
fi
# It is a libtool convenience library, so add in its objects.
- convenience="$convenience $ladir/$objdir/$old_library"
- old_convenience="$old_convenience $ladir/$objdir/$old_library"
+ func_append convenience " $ladir/$objdir/$old_library"
+ func_append old_convenience " $ladir/$objdir/$old_library"
elif test "$linkmode" != prog && test "$linkmode" != lib; then
func_fatal_error "\`$lib' is not a convenience library"
fi
tmp_libs=
for deplib in $dependency_libs; do
deplibs="$deplib $deplibs"
- if $opt_duplicate_deps ; then
+ if $opt_preserve_dup_deps ; then
case "$tmp_libs " in
- *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ *" $deplib "*) func_append specialdeplibs " $deplib" ;;
esac
fi
- tmp_libs="$tmp_libs $deplib"
+ func_append tmp_libs " $deplib"
done
continue
fi # $pass = conv
@@ -5690,9 +6463,15 @@
# Get the name of the library we link against.
linklib=
- for l in $old_library $library_names; do
- linklib="$l"
- done
+ if test -n "$old_library" &&
+ { test "$prefer_static_libs" = yes ||
+ test "$prefer_static_libs,$installed" = "built,no"; }; then
+ linklib=$old_library
+ else
+ for l in $old_library $library_names; do
+ linklib="$l"
+ done
+ fi
if test -z "$linklib"; then
func_fatal_error "cannot find name of link library for \`$lib'"
fi
@@ -5709,9 +6488,9 @@
# statically, we need to preload. We also need to preload any
# dependent libraries so libltdl's deplib preloader doesn't
# bomb out in the load deplibs phase.
- dlprefiles="$dlprefiles $lib $dependency_libs"
+ func_append dlprefiles " $lib $dependency_libs"
else
- newdlfiles="$newdlfiles $lib"
+ func_append newdlfiles " $lib"
fi
continue
fi # $pass = dlopen
@@ -5733,14 +6512,14 @@
# Find the relevant object directory and library name.
if test "X$installed" = Xyes; then
- if test ! -f "$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then
+ if test ! -f "$lt_sysroot$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then
func_warning "library \`$lib' was moved."
dir="$ladir"
absdir="$abs_ladir"
libdir="$abs_ladir"
else
- dir="$libdir"
- absdir="$libdir"
+ dir="$lt_sysroot$libdir"
+ absdir="$lt_sysroot$libdir"
fi
test "X$hardcode_automatic" = Xyes && avoidtemprpath=yes
else
@@ -5748,12 +6527,12 @@
dir="$ladir"
absdir="$abs_ladir"
# Remove this search path later
- notinst_path="$notinst_path $abs_ladir"
+ func_append notinst_path " $abs_ladir"
else
dir="$ladir/$objdir"
absdir="$abs_ladir/$objdir"
# Remove this search path later
- notinst_path="$notinst_path $abs_ladir"
+ func_append notinst_path " $abs_ladir"
fi
fi # $installed = yes
func_stripname 'lib' '.la' "$laname"
@@ -5764,20 +6543,46 @@
if test -z "$libdir" && test "$linkmode" = prog; then
func_fatal_error "only libraries may -dlpreopen a convenience library: \`$lib'"
fi
- # Prefer using a static library (so that no silly _DYNAMIC symbols
- # are required to link).
- if test -n "$old_library"; then
- newdlprefiles="$newdlprefiles $dir/$old_library"
- # Keep a list of preopened convenience libraries to check
- # that they are being used correctly in the link pass.
- test -z "$libdir" && \
- dlpreconveniencelibs="$dlpreconveniencelibs $dir/$old_library"
- # Otherwise, use the dlname, so that lt_dlopen finds it.
- elif test -n "$dlname"; then
- newdlprefiles="$newdlprefiles $dir/$dlname"
- else
- newdlprefiles="$newdlprefiles $dir/$linklib"
- fi
+ case "$host" in
+ # special handling for platforms with PE-DLLs.
+ *cygwin* | *mingw* | *cegcc* )
+ # Linker will automatically link against shared library if both
+ # static and shared are present. Therefore, ensure we extract
+ # symbols from the import library if a shared library is present
+ # (otherwise, the dlopen module name will be incorrect). We do
+ # this by putting the import library name into $newdlprefiles.
+ # We recover the dlopen module name by 'saving' the la file
+ # name in a special purpose variable, and (later) extracting the
+ # dlname from the la file.
+ if test -n "$dlname"; then
+ func_tr_sh "$dir/$linklib"
+ eval "libfile_$func_tr_sh_result=\$abs_ladir/\$laname"
+ func_append newdlprefiles " $dir/$linklib"
+ else
+ func_append newdlprefiles " $dir/$old_library"
+ # Keep a list of preopened convenience libraries to check
+ # that they are being used correctly in the link pass.
+ test -z "$libdir" && \
+ func_append dlpreconveniencelibs " $dir/$old_library"
+ fi
+ ;;
+ * )
+ # Prefer using a static library (so that no silly _DYNAMIC symbols
+ # are required to link).
+ if test -n "$old_library"; then
+ func_append newdlprefiles " $dir/$old_library"
+ # Keep a list of preopened convenience libraries to check
+ # that they are being used correctly in the link pass.
+ test -z "$libdir" && \
+ func_append dlpreconveniencelibs " $dir/$old_library"
+ # Otherwise, use the dlname, so that lt_dlopen finds it.
+ elif test -n "$dlname"; then
+ func_append newdlprefiles " $dir/$dlname"
+ else
+ func_append newdlprefiles " $dir/$linklib"
+ fi
+ ;;
+ esac
fi # $pass = dlpreopen
if test -z "$libdir"; then
@@ -5795,7 +6600,7 @@
if test "$linkmode" = prog && test "$pass" != link; then
- newlib_search_path="$newlib_search_path $ladir"
+ func_append newlib_search_path " $ladir"
deplibs="$lib $deplibs"
linkalldeplibs=no
@@ -5808,7 +6613,8 @@
for deplib in $dependency_libs; do
case $deplib in
-L*) func_stripname '-L' '' "$deplib"
- newlib_search_path="$newlib_search_path $func_stripname_result"
+ func_resolve_sysroot "$func_stripname_result"
+ func_append newlib_search_path " $func_resolve_sysroot_result"
;;
esac
# Need to link against all dependency_libs?
@@ -5819,12 +6625,12 @@
# or/and link against static libraries
newdependency_libs="$deplib $newdependency_libs"
fi
- if $opt_duplicate_deps ; then
+ if $opt_preserve_dup_deps ; then
case "$tmp_libs " in
- *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ *" $deplib "*) func_append specialdeplibs " $deplib" ;;
esac
fi
- tmp_libs="$tmp_libs $deplib"
+ func_append tmp_libs " $deplib"
done # for deplib
continue
fi # $linkmode = prog...
@@ -5839,7 +6645,7 @@
# Make sure the rpath contains only unique directories.
case "$temp_rpath:" in
*"$absdir:"*) ;;
- *) temp_rpath="$temp_rpath$absdir:" ;;
+ *) func_append temp_rpath "$absdir:" ;;
esac
fi
@@ -5851,7 +6657,7 @@
*)
case "$compile_rpath " in
*" $absdir "*) ;;
- *) compile_rpath="$compile_rpath $absdir"
+ *) func_append compile_rpath " $absdir" ;;
esac
;;
esac
@@ -5860,7 +6666,7 @@
*)
case "$finalize_rpath " in
*" $libdir "*) ;;
- *) finalize_rpath="$finalize_rpath $libdir"
+ *) func_append finalize_rpath " $libdir" ;;
esac
;;
esac
@@ -5885,12 +6691,12 @@
case $host in
*cygwin* | *mingw* | *cegcc*)
# No point in relinking DLLs because paths are not encoded
- notinst_deplibs="$notinst_deplibs $lib"
+ func_append notinst_deplibs " $lib"
need_relink=no
;;
*)
if test "$installed" = no; then
- notinst_deplibs="$notinst_deplibs $lib"
+ func_append notinst_deplibs " $lib"
need_relink=yes
fi
;;
@@ -5925,7 +6731,7 @@
*)
case "$compile_rpath " in
*" $absdir "*) ;;
- *) compile_rpath="$compile_rpath $absdir"
+ *) func_append compile_rpath " $absdir" ;;
esac
;;
esac
@@ -5934,7 +6740,7 @@
*)
case "$finalize_rpath " in
*" $libdir "*) ;;
- *) finalize_rpath="$finalize_rpath $libdir"
+ *) func_append finalize_rpath " $libdir" ;;
esac
;;
esac
@@ -5988,7 +6794,7 @@
linklib=$newlib
fi # test -n "$old_archive_from_expsyms_cmds"
- if test "$linkmode" = prog || test "$mode" != relink; then
+ if test "$linkmode" = prog || test "$opt_mode" != relink; then
add_shlibpath=
add_dir=
add=
@@ -6039,12 +6845,12 @@
test "$hardcode_direct_absolute" = no; then
add="$dir/$linklib"
elif test "$hardcode_minus_L" = yes; then
- add_dir="-L$dir"
+ add_dir="-L$absdir"
# Try looking first in the location we're being installed to.
if test -n "$inst_prefix_dir"; then
case $libdir in
[\\/]*)
- add_dir="$add_dir -L$inst_prefix_dir$libdir"
+ func_append add_dir " -L$inst_prefix_dir$libdir"
;;
esac
fi
@@ -6066,7 +6872,7 @@
if test -n "$add_shlibpath"; then
case :$compile_shlibpath: in
*":$add_shlibpath:"*) ;;
- *) compile_shlibpath="$compile_shlibpath$add_shlibpath:" ;;
+ *) func_append compile_shlibpath "$add_shlibpath:" ;;
esac
fi
if test "$linkmode" = prog; then
@@ -6080,13 +6886,13 @@
test "$hardcode_shlibpath_var" = yes; then
case :$finalize_shlibpath: in
*":$libdir:"*) ;;
- *) finalize_shlibpath="$finalize_shlibpath$libdir:" ;;
+ *) func_append finalize_shlibpath "$libdir:" ;;
esac
fi
fi
fi
- if test "$linkmode" = prog || test "$mode" = relink; then
+ if test "$linkmode" = prog || test "$opt_mode" = relink; then
add_shlibpath=
add_dir=
add=
@@ -6100,7 +6906,7 @@
elif test "$hardcode_shlibpath_var" = yes; then
case :$finalize_shlibpath: in
*":$libdir:"*) ;;
- *) finalize_shlibpath="$finalize_shlibpath$libdir:" ;;
+ *) func_append finalize_shlibpath "$libdir:" ;;
esac
add="-l$name"
elif test "$hardcode_automatic" = yes; then
@@ -6117,7 +6923,7 @@
if test -n "$inst_prefix_dir"; then
case $libdir in
[\\/]*)
- add_dir="$add_dir -L$inst_prefix_dir$libdir"
+ func_append add_dir " -L$inst_prefix_dir$libdir"
;;
esac
fi
@@ -6194,27 +7000,33 @@
temp_xrpath=$func_stripname_result
case " $xrpath " in
*" $temp_xrpath "*) ;;
- *) xrpath="$xrpath $temp_xrpath";;
+ *) func_append xrpath " $temp_xrpath";;
esac;;
- *) temp_deplibs="$temp_deplibs $libdir";;
+ *) func_append temp_deplibs " $libdir";;
esac
done
dependency_libs="$temp_deplibs"
fi
- newlib_search_path="$newlib_search_path $absdir"
+ func_append newlib_search_path " $absdir"
# Link against this library
test "$link_static" = no && newdependency_libs="$abs_ladir/$laname $newdependency_libs"
# ... and its dependency_libs
tmp_libs=
for deplib in $dependency_libs; do
newdependency_libs="$deplib $newdependency_libs"
- if $opt_duplicate_deps ; then
+ case $deplib in
+ -L*) func_stripname '-L' '' "$deplib"
+ func_resolve_sysroot "$func_stripname_result";;
+ *) func_resolve_sysroot "$deplib" ;;
+ esac
+ if $opt_preserve_dup_deps ; then
case "$tmp_libs " in
- *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ *" $func_resolve_sysroot_result "*)
+ func_append specialdeplibs " $func_resolve_sysroot_result" ;;
esac
fi
- tmp_libs="$tmp_libs $deplib"
+ func_append tmp_libs " $func_resolve_sysroot_result"
done
if test "$link_all_deplibs" != no; then
@@ -6224,8 +7036,10 @@
case $deplib in
-L*) path="$deplib" ;;
*.la)
+ func_resolve_sysroot "$deplib"
+ deplib=$func_resolve_sysroot_result
func_dirname "$deplib" "" "."
- dir="$func_dirname_result"
+ dir=$func_dirname_result
# We need an absolute path.
case $dir in
[\\/]* | [A-Za-z]:[\\/]*) absdir="$dir" ;;
@@ -6252,8 +7066,8 @@
if test -z "$darwin_install_name"; then
darwin_install_name=`${OTOOL64} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'`
fi
- compiler_flags="$compiler_flags ${wl}-dylib_file ${wl}${darwin_install_name}:${depdepl}"
- linker_flags="$linker_flags -dylib_file ${darwin_install_name}:${depdepl}"
+ func_append compiler_flags " ${wl}-dylib_file ${wl}${darwin_install_name}:${depdepl}"
+ func_append linker_flags " -dylib_file ${darwin_install_name}:${depdepl}"
path=
fi
fi
@@ -6303,7 +7117,7 @@
for dir in $newlib_search_path; do
case "$lib_search_path " in
*" $dir "*) ;;
- *) lib_search_path="$lib_search_path $dir" ;;
+ *) func_append lib_search_path " $dir" ;;
esac
done
newlib_search_path=
@@ -6361,10 +7175,10 @@
-L*)
case " $tmp_libs " in
*" $deplib "*) ;;
- *) tmp_libs="$tmp_libs $deplib" ;;
+ *) func_append tmp_libs " $deplib" ;;
esac
;;
- *) tmp_libs="$tmp_libs $deplib" ;;
+ *) func_append tmp_libs " $deplib" ;;
esac
done
eval $var=\"$tmp_libs\"
@@ -6380,7 +7194,7 @@
;;
esac
if test -n "$i" ; then
- tmp_libs="$tmp_libs $i"
+ func_append tmp_libs " $i"
fi
done
dependency_libs=$tmp_libs
@@ -6421,7 +7235,7 @@
# Now set the variables for building old libraries.
build_libtool_libs=no
oldlibs="$output"
- objs="$objs$old_deplibs"
+ func_append objs "$old_deplibs"
;;
lib)
@@ -6457,7 +7271,7 @@
echo
$ECHO "*** Warning: Linking the shared library $output against the non-libtool"
$ECHO "*** objects $objs is not portable!"
- libobjs="$libobjs $objs"
+ func_append libobjs " $objs"
fi
fi
@@ -6516,6 +7330,7 @@
# which has an extra 1 added just for fun
#
case $version_type in
+ # correct linux to gnu/linux during the next big refactor
darwin|linux|osf|windows|none)
func_arith $number_major + $number_minor
current=$func_arith_result
@@ -6632,7 +7447,7 @@
versuffix="$major.$revision"
;;
- linux)
+ linux) # correct to gnu/linux during the next big refactor
func_arith $current - $age
major=.$func_arith_result
versuffix="$major.$age.$revision"
@@ -6655,7 +7470,7 @@
done
# Make executables depend on our current version.
- verstring="$verstring:${current}.0"
+ func_append verstring ":${current}.0"
;;
qnx)
@@ -6723,10 +7538,10 @@
fi
func_generate_dlsyms "$libname" "$libname" "yes"
- libobjs="$libobjs $symfileobj"
+ func_append libobjs " $symfileobj"
test "X$libobjs" = "X " && libobjs=
- if test "$mode" != relink; then
+ if test "$opt_mode" != relink; then
# Remove our outputs, but don't remove object files since they
# may have been created when compiling PIC objects.
removelist=
@@ -6742,7 +7557,7 @@
continue
fi
fi
- removelist="$removelist $p"
+ func_append removelist " $p"
;;
*) ;;
esac
@@ -6753,7 +7568,7 @@
# Now set the variables for building old libraries.
if test "$build_old_libs" = yes && test "$build_libtool_libs" != convenience ; then
- oldlibs="$oldlibs $output_objdir/$libname.$libext"
+ func_append oldlibs " $output_objdir/$libname.$libext"
# Transform .lo files to .o files.
oldobjs="$objs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; $lo2o" | $NL2SP`
@@ -6770,10 +7585,11 @@
# If the user specified any rpath flags, then add them.
temp_xrpath=
for libdir in $xrpath; do
- temp_xrpath="$temp_xrpath -R$libdir"
+ func_replace_sysroot "$libdir"
+ func_append temp_xrpath " -R$func_replace_sysroot_result"
case "$finalize_rpath " in
*" $libdir "*) ;;
- *) finalize_rpath="$finalize_rpath $libdir" ;;
+ *) func_append finalize_rpath " $libdir" ;;
esac
done
if test "$hardcode_into_libs" != yes || test "$build_old_libs" = yes; then
@@ -6787,7 +7603,7 @@
for lib in $old_dlfiles; do
case " $dlprefiles $dlfiles " in
*" $lib "*) ;;
- *) dlfiles="$dlfiles $lib" ;;
+ *) func_append dlfiles " $lib" ;;
esac
done
@@ -6797,7 +7613,7 @@
for lib in $old_dlprefiles; do
case "$dlprefiles " in
*" $lib "*) ;;
- *) dlprefiles="$dlprefiles $lib" ;;
+ *) func_append dlprefiles " $lib" ;;
esac
done
@@ -6809,7 +7625,7 @@
;;
*-*-rhapsody* | *-*-darwin1.[012])
# Rhapsody C library is in the System framework
- deplibs="$deplibs System.ltframework"
+ func_append deplibs " System.ltframework"
;;
*-*-netbsd*)
# Don't link with libc until the a.out ld.so is fixed.
@@ -6826,7 +7642,7 @@
*)
# Add libc to deplibs on all other systems if necessary.
if test "$build_libtool_need_lc" = "yes"; then
- deplibs="$deplibs -lc"
+ func_append deplibs " -lc"
fi
;;
esac
@@ -6875,7 +7691,7 @@
if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
case " $predeps $postdeps " in
*" $i "*)
- newdeplibs="$newdeplibs $i"
+ func_append newdeplibs " $i"
i=""
;;
esac
@@ -6886,7 +7702,7 @@
set dummy $deplib_matches; shift
deplib_match=$1
if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0 ; then
- newdeplibs="$newdeplibs $i"
+ func_append newdeplibs " $i"
else
droppeddeps=yes
echo
@@ -6900,7 +7716,7 @@
fi
;;
*)
- newdeplibs="$newdeplibs $i"
+ func_append newdeplibs " $i"
;;
esac
done
@@ -6918,7 +7734,7 @@
if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
case " $predeps $postdeps " in
*" $i "*)
- newdeplibs="$newdeplibs $i"
+ func_append newdeplibs " $i"
i=""
;;
esac
@@ -6929,7 +7745,7 @@
set dummy $deplib_matches; shift
deplib_match=$1
if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0 ; then
- newdeplibs="$newdeplibs $i"
+ func_append newdeplibs " $i"
else
droppeddeps=yes
echo
@@ -6951,7 +7767,7 @@
fi
;;
*)
- newdeplibs="$newdeplibs $i"
+ func_append newdeplibs " $i"
;;
esac
done
@@ -6968,15 +7784,27 @@
if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
case " $predeps $postdeps " in
*" $a_deplib "*)
- newdeplibs="$newdeplibs $a_deplib"
+ func_append newdeplibs " $a_deplib"
a_deplib=""
;;
esac
fi
if test -n "$a_deplib" ; then
libname=`eval "\\$ECHO \"$libname_spec\""`
+ if test -n "$file_magic_glob"; then
+ libnameglob=`func_echo_all "$libname" | $SED -e $file_magic_glob`
+ else
+ libnameglob=$libname
+ fi
+ test "$want_nocaseglob" = yes && nocaseglob=`shopt -p nocaseglob`
for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do
- potential_libs=`ls $i/$libname[.-]* 2>/dev/null`
+ if test "$want_nocaseglob" = yes; then
+ shopt -s nocaseglob
+ potential_libs=`ls $i/$libnameglob[.-]* 2>/dev/null`
+ $nocaseglob
+ else
+ potential_libs=`ls $i/$libnameglob[.-]* 2>/dev/null`
+ fi
for potent_lib in $potential_libs; do
# Follow soft links.
if ls -lLd "$potent_lib" 2>/dev/null |
@@ -6999,7 +7827,7 @@
if eval $file_magic_cmd \"\$potlib\" 2>/dev/null |
$SED -e 10q |
$EGREP "$file_magic_regex" > /dev/null; then
- newdeplibs="$newdeplibs $a_deplib"
+ func_append newdeplibs " $a_deplib"
a_deplib=""
break 2
fi
@@ -7024,7 +7852,7 @@
;;
*)
# Add a -L argument.
- newdeplibs="$newdeplibs $a_deplib"
+ func_append newdeplibs " $a_deplib"
;;
esac
done # Gone through all deplibs.
@@ -7040,7 +7868,7 @@
if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
case " $predeps $postdeps " in
*" $a_deplib "*)
- newdeplibs="$newdeplibs $a_deplib"
+ func_append newdeplibs " $a_deplib"
a_deplib=""
;;
esac
@@ -7053,7 +7881,7 @@
potlib="$potent_lib" # see symlink-check above in file_magic test
if eval "\$ECHO \"$potent_lib\"" 2>/dev/null | $SED 10q | \
$EGREP "$match_pattern_regex" > /dev/null; then
- newdeplibs="$newdeplibs $a_deplib"
+ func_append newdeplibs " $a_deplib"
a_deplib=""
break 2
fi
@@ -7078,7 +7906,7 @@
;;
*)
# Add a -L argument.
- newdeplibs="$newdeplibs $a_deplib"
+ func_append newdeplibs " $a_deplib"
;;
esac
done # Gone through all deplibs.
@@ -7182,7 +8010,7 @@
*)
case " $deplibs " in
*" -L$path/$objdir "*)
- new_libs="$new_libs -L$path/$objdir" ;;
+ func_append new_libs " -L$path/$objdir" ;;
esac
;;
esac
@@ -7192,10 +8020,10 @@
-L*)
case " $new_libs " in
*" $deplib "*) ;;
- *) new_libs="$new_libs $deplib" ;;
+ *) func_append new_libs " $deplib" ;;
esac
;;
- *) new_libs="$new_libs $deplib" ;;
+ *) func_append new_libs " $deplib" ;;
esac
done
deplibs="$new_libs"
@@ -7207,15 +8035,22 @@
# Test again, we may have decided not to build it any more
if test "$build_libtool_libs" = yes; then
+ # Remove ${wl} instances when linking with ld.
+ # FIXME: should test the right _cmds variable.
+ case $archive_cmds in
+ *\$LD\ *) wl= ;;
+ esac
if test "$hardcode_into_libs" = yes; then
# Hardcode the library paths
hardcode_libdirs=
dep_rpath=
rpath="$finalize_rpath"
- test "$mode" != relink && rpath="$compile_rpath$rpath"
+ test "$opt_mode" != relink && rpath="$compile_rpath$rpath"
for libdir in $rpath; do
if test -n "$hardcode_libdir_flag_spec"; then
if test -n "$hardcode_libdir_separator"; then
+ func_replace_sysroot "$libdir"
+ libdir=$func_replace_sysroot_result
if test -z "$hardcode_libdirs"; then
hardcode_libdirs="$libdir"
else
@@ -7224,18 +8059,18 @@
*"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
;;
*)
- hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+ func_append hardcode_libdirs "$hardcode_libdir_separator$libdir"
;;
esac
fi
else
eval flag=\"$hardcode_libdir_flag_spec\"
- dep_rpath="$dep_rpath $flag"
+ func_append dep_rpath " $flag"
fi
elif test -n "$runpath_var"; then
case "$perm_rpath " in
*" $libdir "*) ;;
- *) perm_rpath="$perm_rpath $libdir" ;;
+ *) func_append perm_rpath " $libdir" ;;
esac
fi
done
@@ -7243,17 +8078,13 @@
if test -n "$hardcode_libdir_separator" &&
test -n "$hardcode_libdirs"; then
libdir="$hardcode_libdirs"
- if test -n "$hardcode_libdir_flag_spec_ld"; then
- eval dep_rpath=\"$hardcode_libdir_flag_spec_ld\"
- else
- eval dep_rpath=\"$hardcode_libdir_flag_spec\"
- fi
+ eval "dep_rpath=\"$hardcode_libdir_flag_spec\""
fi
if test -n "$runpath_var" && test -n "$perm_rpath"; then
# We should set the runpath_var.
rpath=
for dir in $perm_rpath; do
- rpath="$rpath$dir:"
+ func_append rpath "$dir:"
done
eval "$runpath_var='$rpath\$$runpath_var'; export $runpath_var"
fi
@@ -7261,7 +8092,7 @@
fi
shlibpath="$finalize_shlibpath"
- test "$mode" != relink && shlibpath="$compile_shlibpath$shlibpath"
+ test "$opt_mode" != relink && shlibpath="$compile_shlibpath$shlibpath"
if test -n "$shlibpath"; then
eval "$shlibpath_var='$shlibpath\$$shlibpath_var'; export $shlibpath_var"
fi
@@ -7287,7 +8118,7 @@
linknames=
for link
do
- linknames="$linknames $link"
+ func_append linknames " $link"
done
# Use standard objects if they are pic
@@ -7298,7 +8129,7 @@
if test -n "$export_symbols" && test -n "$include_expsyms"; then
$opt_dry_run || cp "$export_symbols" "$output_objdir/$libname.uexp"
export_symbols="$output_objdir/$libname.uexp"
- delfiles="$delfiles $export_symbols"
+ func_append delfiles " $export_symbols"
fi
orig_export_symbols=
@@ -7329,14 +8160,46 @@
$opt_dry_run || $RM $export_symbols
cmds=$export_symbols_cmds
save_ifs="$IFS"; IFS='~'
- for cmd in $cmds; do
+ for cmd1 in $cmds; do
IFS="$save_ifs"
- eval cmd=\"$cmd\"
- func_len " $cmd"
- len=$func_len_result
- if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+ # Take the normal branch if the nm_file_list_spec branch
+ # doesn't work or if tool conversion is not needed.
+ case $nm_file_list_spec~$to_tool_file_cmd in
+ *~func_convert_file_noop | *~func_convert_file_msys_to_w32 | ~*)
+ try_normal_branch=yes
+ eval cmd=\"$cmd1\"
+ func_len " $cmd"
+ len=$func_len_result
+ ;;
+ *)
+ try_normal_branch=no
+ ;;
+ esac
+ if test "$try_normal_branch" = yes \
+ && { test "$len" -lt "$max_cmd_len" \
+ || test "$max_cmd_len" -le -1; }
+ then
func_show_eval "$cmd" 'exit $?'
skipped_export=false
+ elif test -n "$nm_file_list_spec"; then
+ func_basename "$output"
+ output_la=$func_basename_result
+ save_libobjs=$libobjs
+ save_output=$output
+ output=${output_objdir}/${output_la}.nm
+ func_to_tool_file "$output"
+ libobjs=$nm_file_list_spec$func_to_tool_file_result
+ func_append delfiles " $output"
+ func_verbose "creating $NM input file list: $output"
+ for obj in $save_libobjs; do
+ func_to_tool_file "$obj"
+ $ECHO "$func_to_tool_file_result"
+ done > "$output"
+ eval cmd=\"$cmd1\"
+ func_show_eval "$cmd" 'exit $?'
+ output=$save_output
+ libobjs=$save_libobjs
+ skipped_export=false
else
# The command line is too long to execute in one step.
func_verbose "using reloadable object file for export list..."
@@ -7369,7 +8232,7 @@
# global variables. join(1) would be nice here, but unfortunately
# isn't a blessed tool.
$opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
- delfiles="$delfiles $export_symbols $output_objdir/$libname.filter"
+ func_append delfiles " $export_symbols $output_objdir/$libname.filter"
export_symbols=$output_objdir/$libname.def
$opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
fi
@@ -7379,7 +8242,7 @@
case " $convenience " in
*" $test_deplib "*) ;;
*)
- tmp_deplibs="$tmp_deplibs $test_deplib"
+ func_append tmp_deplibs " $test_deplib"
;;
esac
done
@@ -7399,21 +8262,21 @@
test "X$libobjs" = "X " && libobjs=
else
gentop="$output_objdir/${outputname}x"
- generated="$generated $gentop"
+ func_append generated " $gentop"
func_extract_archives $gentop $convenience
- libobjs="$libobjs $func_extract_archives_result"
+ func_append libobjs " $func_extract_archives_result"
test "X$libobjs" = "X " && libobjs=
fi
fi
if test "$thread_safe" = yes && test -n "$thread_safe_flag_spec"; then
eval flag=\"$thread_safe_flag_spec\"
- linker_flags="$linker_flags $flag"
+ func_append linker_flags " $flag"
fi
# Make a backup of the uninstalled library when relinking
- if test "$mode" = relink; then
+ if test "$opt_mode" = relink; then
$opt_dry_run || eval '(cd $output_objdir && $RM ${realname}U && $MV $realname ${realname}U)' || exit $?
fi
@@ -7475,10 +8338,13 @@
echo 'INPUT (' > $output
for obj in $save_libobjs
do
- $ECHO "$obj" >> $output
+ func_to_tool_file "$obj"
+ $ECHO "$func_to_tool_file_result" >> $output
done
echo ')' >> $output
- delfiles="$delfiles $output"
+ func_append delfiles " $output"
+ func_to_tool_file "$output"
+ output=$func_to_tool_file_result
elif test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "X$file_list_spec" != X; then
output=${output_objdir}/${output_la}.lnk
func_verbose "creating linker input file list: $output"
@@ -7492,10 +8358,12 @@
fi
for obj
do
- $ECHO "$obj" >> $output
+ func_to_tool_file "$obj"
+ $ECHO "$func_to_tool_file_result" >> $output
done
- delfiles="$delfiles $output"
- output=$firstobj\"$file_list_spec$output\"
+ func_append delfiles " $output"
+ func_to_tool_file "$output"
+ output=$firstobj\"$file_list_spec$func_to_tool_file_result\"
else
if test -n "$save_libobjs"; then
func_verbose "creating reloadable object files..."
@@ -7546,7 +8414,7 @@
if test -n "$last_robj"; then
eval concat_cmds=\"\${concat_cmds}~\$RM $last_robj\"
fi
- delfiles="$delfiles $output"
+ func_append delfiles " $output"
else
output=
@@ -7580,7 +8448,7 @@
lt_exit=$?
# Restore the uninstalled library and exit
- if test "$mode" = relink; then
+ if test "$opt_mode" = relink; then
( cd "$output_objdir" && \
$RM "${realname}T" && \
$MV "${realname}U" "$realname" )
@@ -7613,7 +8481,7 @@
# global variables. join(1) would be nice here, but unfortunately
# isn't a blessed tool.
$opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
- delfiles="$delfiles $export_symbols $output_objdir/$libname.filter"
+ func_append delfiles " $export_symbols $output_objdir/$libname.filter"
export_symbols=$output_objdir/$libname.def
$opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
fi
@@ -7654,10 +8522,10 @@
# Add any objects from preloaded convenience libraries
if test -n "$dlprefiles"; then
gentop="$output_objdir/${outputname}x"
- generated="$generated $gentop"
+ func_append generated " $gentop"
func_extract_archives $gentop $dlprefiles
- libobjs="$libobjs $func_extract_archives_result"
+ func_append libobjs " $func_extract_archives_result"
test "X$libobjs" = "X " && libobjs=
fi
@@ -7673,7 +8541,7 @@
lt_exit=$?
# Restore the uninstalled library and exit
- if test "$mode" = relink; then
+ if test "$opt_mode" = relink; then
( cd "$output_objdir" && \
$RM "${realname}T" && \
$MV "${realname}U" "$realname" )
@@ -7685,7 +8553,7 @@
IFS="$save_ifs"
# Restore the uninstalled library and exit
- if test "$mode" = relink; then
+ if test "$opt_mode" = relink; then
$opt_dry_run || eval '(cd $output_objdir && $RM ${realname}T && $MV $realname ${realname}T && $MV ${realname}U $realname)' || exit $?
if test -n "$convenience"; then
@@ -7769,13 +8637,16 @@
reload_conv_objs=$reload_objs\ `$ECHO "$tmp_whole_archive_flags" | $SED 's|,| |g'`
else
gentop="$output_objdir/${obj}x"
- generated="$generated $gentop"
+ func_append generated " $gentop"
func_extract_archives $gentop $convenience
reload_conv_objs="$reload_objs $func_extract_archives_result"
fi
fi
+ # If we're not building shared, we need to use non_pic_objs
+ test "$build_libtool_libs" != yes && libobjs="$non_pic_objects"
+
# Create the old-style object.
reload_objs="$objs$old_deplibs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; /\.lib$/d; $lo2o" | $NL2SP`" $reload_conv_objs" ### testsuite: skip nested quoting test
@@ -7849,8 +8720,8 @@
if test "$tagname" = CXX ; then
case ${MACOSX_DEPLOYMENT_TARGET-10.0} in
10.[0123])
- compile_command="$compile_command ${wl}-bind_at_load"
- finalize_command="$finalize_command ${wl}-bind_at_load"
+ func_append compile_command " ${wl}-bind_at_load"
+ func_append finalize_command " ${wl}-bind_at_load"
;;
esac
fi
@@ -7870,7 +8741,7 @@
*)
case " $compile_deplibs " in
*" -L$path/$objdir "*)
- new_libs="$new_libs -L$path/$objdir" ;;
+ func_append new_libs " -L$path/$objdir" ;;
esac
;;
esac
@@ -7880,17 +8751,17 @@
-L*)
case " $new_libs " in
*" $deplib "*) ;;
- *) new_libs="$new_libs $deplib" ;;
+ *) func_append new_libs " $deplib" ;;
esac
;;
- *) new_libs="$new_libs $deplib" ;;
+ *) func_append new_libs " $deplib" ;;
esac
done
compile_deplibs="$new_libs"
- compile_command="$compile_command $compile_deplibs"
- finalize_command="$finalize_command $finalize_deplibs"
+ func_append compile_command " $compile_deplibs"
+ func_append finalize_command " $finalize_deplibs"
if test -n "$rpath$xrpath"; then
# If the user specified any rpath flags, then add them.
@@ -7898,7 +8769,7 @@
# This is the magic to use -rpath.
case "$finalize_rpath " in
*" $libdir "*) ;;
- *) finalize_rpath="$finalize_rpath $libdir" ;;
+ *) func_append finalize_rpath " $libdir" ;;
esac
done
fi
@@ -7917,18 +8788,18 @@
*"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
;;
*)
- hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+ func_append hardcode_libdirs "$hardcode_libdir_separator$libdir"
;;
esac
fi
else
eval flag=\"$hardcode_libdir_flag_spec\"
- rpath="$rpath $flag"
+ func_append rpath " $flag"
fi
elif test -n "$runpath_var"; then
case "$perm_rpath " in
*" $libdir "*) ;;
- *) perm_rpath="$perm_rpath $libdir" ;;
+ *) func_append perm_rpath " $libdir" ;;
esac
fi
case $host in
@@ -7937,12 +8808,12 @@
case :$dllsearchpath: in
*":$libdir:"*) ;;
::) dllsearchpath=$libdir;;
- *) dllsearchpath="$dllsearchpath:$libdir";;
+ *) func_append dllsearchpath ":$libdir";;
esac
case :$dllsearchpath: in
*":$testbindir:"*) ;;
::) dllsearchpath=$testbindir;;
- *) dllsearchpath="$dllsearchpath:$testbindir";;
+ *) func_append dllsearchpath ":$testbindir";;
esac
;;
esac
@@ -7968,18 +8839,18 @@
*"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
;;
*)
- hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+ func_append hardcode_libdirs "$hardcode_libdir_separator$libdir"
;;
esac
fi
else
eval flag=\"$hardcode_libdir_flag_spec\"
- rpath="$rpath $flag"
+ func_append rpath " $flag"
fi
elif test -n "$runpath_var"; then
case "$finalize_perm_rpath " in
*" $libdir "*) ;;
- *) finalize_perm_rpath="$finalize_perm_rpath $libdir" ;;
+ *) func_append finalize_perm_rpath " $libdir" ;;
esac
fi
done
@@ -8030,6 +8901,12 @@
exit_status=0
func_show_eval "$link_command" 'exit_status=$?'
+ if test -n "$postlink_cmds"; then
+ func_to_tool_file "$output"
+ postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'`
+ func_execute_cmds "$postlink_cmds" 'exit $?'
+ fi
+
# Delete the generated files.
if test -f "$output_objdir/${outputname}S.${objext}"; then
func_show_eval '$RM "$output_objdir/${outputname}S.${objext}"'
@@ -8052,7 +8929,7 @@
# We should set the runpath_var.
rpath=
for dir in $perm_rpath; do
- rpath="$rpath$dir:"
+ func_append rpath "$dir:"
done
compile_var="$runpath_var=\"$rpath\$$runpath_var\" "
fi
@@ -8060,7 +8937,7 @@
# We should set the runpath_var.
rpath=
for dir in $finalize_perm_rpath; do
- rpath="$rpath$dir:"
+ func_append rpath "$dir:"
done
finalize_var="$runpath_var=\"$rpath\$$runpath_var\" "
fi
@@ -8075,6 +8952,13 @@
$opt_dry_run || $RM $output
# Link the executable and exit
func_show_eval "$link_command" 'exit $?'
+
+ if test -n "$postlink_cmds"; then
+ func_to_tool_file "$output"
+ postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'`
+ func_execute_cmds "$postlink_cmds" 'exit $?'
+ fi
+
exit $EXIT_SUCCESS
fi
@@ -8108,6 +8992,12 @@
func_show_eval "$link_command" 'exit $?'
+ if test -n "$postlink_cmds"; then
+ func_to_tool_file "$output_objdir/$outputname"
+ postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output_objdir/$outputname"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'`
+ func_execute_cmds "$postlink_cmds" 'exit $?'
+ fi
+
# Now create the wrapper script.
func_verbose "creating $output"
@@ -8205,7 +9095,7 @@
else
oldobjs="$old_deplibs $non_pic_objects"
if test "$preload" = yes && test -f "$symfileobj"; then
- oldobjs="$oldobjs $symfileobj"
+ func_append oldobjs " $symfileobj"
fi
fi
addlibs="$old_convenience"
@@ -8213,10 +9103,10 @@
if test -n "$addlibs"; then
gentop="$output_objdir/${outputname}x"
- generated="$generated $gentop"
+ func_append generated " $gentop"
func_extract_archives $gentop $addlibs
- oldobjs="$oldobjs $func_extract_archives_result"
+ func_append oldobjs " $func_extract_archives_result"
fi
# Do each command in the archive commands.
@@ -8227,10 +9117,10 @@
# Add any objects from preloaded convenience libraries
if test -n "$dlprefiles"; then
gentop="$output_objdir/${outputname}x"
- generated="$generated $gentop"
+ func_append generated " $gentop"
func_extract_archives $gentop $dlprefiles
- oldobjs="$oldobjs $func_extract_archives_result"
+ func_append oldobjs " $func_extract_archives_result"
fi
# POSIX demands no paths to be encoded in archives. We have
@@ -8248,7 +9138,7 @@
else
echo "copying selected object files to avoid basename conflicts..."
gentop="$output_objdir/${outputname}x"
- generated="$generated $gentop"
+ func_append generated " $gentop"
func_mkdir_p "$gentop"
save_oldobjs=$oldobjs
oldobjs=
@@ -8272,18 +9162,30 @@
esac
done
func_show_eval "ln $obj $gentop/$newobj || cp $obj $gentop/$newobj"
- oldobjs="$oldobjs $gentop/$newobj"
+ func_append oldobjs " $gentop/$newobj"
;;
- *) oldobjs="$oldobjs $obj" ;;
+ *) func_append oldobjs " $obj" ;;
esac
done
fi
+ func_to_tool_file "$oldlib" func_convert_file_msys_to_w32
+ tool_oldlib=$func_to_tool_file_result
eval cmds=\"$old_archive_cmds\"
func_len " $cmds"
len=$func_len_result
if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
cmds=$old_archive_cmds
+ elif test -n "$archiver_list_spec"; then
+ func_verbose "using command file archive linking..."
+ for obj in $oldobjs
+ do
+ func_to_tool_file "$obj"
+ $ECHO "$func_to_tool_file_result"
+ done > $output_objdir/$libname.libcmd
+ func_to_tool_file "$output_objdir/$libname.libcmd"
+ oldobjs=" $archiver_list_spec$func_to_tool_file_result"
+ cmds=$old_archive_cmds
else
# the command line is too long to link in one step, link in parts
func_verbose "using piecewise archive linking..."
@@ -8377,12 +9279,23 @@
*.la)
func_basename "$deplib"
name="$func_basename_result"
- eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
+ func_resolve_sysroot "$deplib"
+ eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $func_resolve_sysroot_result`
test -z "$libdir" && \
func_fatal_error "\`$deplib' is not a valid libtool archive"
- newdependency_libs="$newdependency_libs $libdir/$name"
+ func_append newdependency_libs " ${lt_sysroot:+=}$libdir/$name"
;;
- *) newdependency_libs="$newdependency_libs $deplib" ;;
+ -L*)
+ func_stripname -L '' "$deplib"
+ func_replace_sysroot "$func_stripname_result"
+ func_append newdependency_libs " -L$func_replace_sysroot_result"
+ ;;
+ -R*)
+ func_stripname -R '' "$deplib"
+ func_replace_sysroot "$func_stripname_result"
+ func_append newdependency_libs " -R$func_replace_sysroot_result"
+ ;;
+ *) func_append newdependency_libs " $deplib" ;;
esac
done
dependency_libs="$newdependency_libs"
@@ -8396,9 +9309,9 @@
eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
test -z "$libdir" && \
func_fatal_error "\`$lib' is not a valid libtool archive"
- newdlfiles="$newdlfiles $libdir/$name"
+ func_append newdlfiles " ${lt_sysroot:+=}$libdir/$name"
;;
- *) newdlfiles="$newdlfiles $lib" ;;
+ *) func_append newdlfiles " $lib" ;;
esac
done
dlfiles="$newdlfiles"
@@ -8415,7 +9328,7 @@
eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
test -z "$libdir" && \
func_fatal_error "\`$lib' is not a valid libtool archive"
- newdlprefiles="$newdlprefiles $libdir/$name"
+ func_append newdlprefiles " ${lt_sysroot:+=}$libdir/$name"
;;
esac
done
@@ -8427,7 +9340,7 @@
[\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
*) abs=`pwd`"/$lib" ;;
esac
- newdlfiles="$newdlfiles $abs"
+ func_append newdlfiles " $abs"
done
dlfiles="$newdlfiles"
newdlprefiles=
@@ -8436,7 +9349,7 @@
[\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
*) abs=`pwd`"/$lib" ;;
esac
- newdlprefiles="$newdlprefiles $abs"
+ func_append newdlprefiles " $abs"
done
dlprefiles="$newdlprefiles"
fi
@@ -8521,7 +9434,7 @@
exit $EXIT_SUCCESS
}
-{ test "$mode" = link || test "$mode" = relink; } &&
+{ test "$opt_mode" = link || test "$opt_mode" = relink; } &&
func_mode_link ${1+"$@"}
@@ -8541,9 +9454,9 @@
for arg
do
case $arg in
- -f) RM="$RM $arg"; rmforce=yes ;;
- -*) RM="$RM $arg" ;;
- *) files="$files $arg" ;;
+ -f) func_append RM " $arg"; rmforce=yes ;;
+ -*) func_append RM " $arg" ;;
+ *) func_append files " $arg" ;;
esac
done
@@ -8552,24 +9465,23 @@
rmdirs=
- origobjdir="$objdir"
for file in $files; do
func_dirname "$file" "" "."
dir="$func_dirname_result"
if test "X$dir" = X.; then
- objdir="$origobjdir"
+ odir="$objdir"
else
- objdir="$dir/$origobjdir"
+ odir="$dir/$objdir"
fi
func_basename "$file"
name="$func_basename_result"
- test "$mode" = uninstall && objdir="$dir"
+ test "$opt_mode" = uninstall && odir="$dir"
- # Remember objdir for removal later, being careful to avoid duplicates
- if test "$mode" = clean; then
+ # Remember odir for removal later, being careful to avoid duplicates
+ if test "$opt_mode" = clean; then
case " $rmdirs " in
- *" $objdir "*) ;;
- *) rmdirs="$rmdirs $objdir" ;;
+ *" $odir "*) ;;
+ *) func_append rmdirs " $odir" ;;
esac
fi
@@ -8595,18 +9507,17 @@
# Delete the libtool libraries and symlinks.
for n in $library_names; do
- rmfiles="$rmfiles $objdir/$n"
+ func_append rmfiles " $odir/$n"
done
- test -n "$old_library" && rmfiles="$rmfiles $objdir/$old_library"
+ test -n "$old_library" && func_append rmfiles " $odir/$old_library"
- case "$mode" in
+ case "$opt_mode" in
clean)
- case " $library_names " in
- # " " in the beginning catches empty $dlname
+ case " $library_names " in
*" $dlname "*) ;;
- *) rmfiles="$rmfiles $objdir/$dlname" ;;
+ *) test -n "$dlname" && func_append rmfiles " $odir/$dlname" ;;
esac
- test -n "$libdir" && rmfiles="$rmfiles $objdir/$name $objdir/${name}i"
+ test -n "$libdir" && func_append rmfiles " $odir/$name $odir/${name}i"
;;
uninstall)
if test -n "$library_names"; then
@@ -8634,19 +9545,19 @@
# Add PIC object to the list of files to remove.
if test -n "$pic_object" &&
test "$pic_object" != none; then
- rmfiles="$rmfiles $dir/$pic_object"
+ func_append rmfiles " $dir/$pic_object"
fi
# Add non-PIC object to the list of files to remove.
if test -n "$non_pic_object" &&
test "$non_pic_object" != none; then
- rmfiles="$rmfiles $dir/$non_pic_object"
+ func_append rmfiles " $dir/$non_pic_object"
fi
fi
;;
*)
- if test "$mode" = clean ; then
+ if test "$opt_mode" = clean ; then
noexename=$name
case $file in
*.exe)
@@ -8656,7 +9567,7 @@
noexename=$func_stripname_result
# $file with .exe has already been added to rmfiles,
# add $file without .exe
- rmfiles="$rmfiles $file"
+ func_append rmfiles " $file"
;;
esac
# Do a test to see if this is a libtool program.
@@ -8665,7 +9576,7 @@
func_ltwrapper_scriptname "$file"
relink_command=
func_source $func_ltwrapper_scriptname_result
- rmfiles="$rmfiles $func_ltwrapper_scriptname_result"
+ func_append rmfiles " $func_ltwrapper_scriptname_result"
else
relink_command=
func_source $dir/$noexename
@@ -8673,12 +9584,12 @@
# note $name still contains .exe if it was in $file originally
# as does the version of $file that was added into $rmfiles
- rmfiles="$rmfiles $objdir/$name $objdir/${name}S.${objext}"
+ func_append rmfiles " $odir/$name $odir/${name}S.${objext}"
if test "$fast_install" = yes && test -n "$relink_command"; then
- rmfiles="$rmfiles $objdir/lt-$name"
+ func_append rmfiles " $odir/lt-$name"
fi
if test "X$noexename" != "X$name" ; then
- rmfiles="$rmfiles $objdir/lt-${noexename}.c"
+ func_append rmfiles " $odir/lt-${noexename}.c"
fi
fi
fi
@@ -8686,7 +9597,6 @@
esac
func_show_eval "$RM $rmfiles" 'exit_status=1'
done
- objdir="$origobjdir"
# Try to remove the ${objdir}s in the directories where we deleted files
for dir in $rmdirs; do
@@ -8698,16 +9608,16 @@
exit $exit_status
}
-{ test "$mode" = uninstall || test "$mode" = clean; } &&
+{ test "$opt_mode" = uninstall || test "$opt_mode" = clean; } &&
func_mode_uninstall ${1+"$@"}
-test -z "$mode" && {
+test -z "$opt_mode" && {
help="$generic_help"
func_fatal_help "you must specify a MODE"
}
test -z "$exec_cmd" && \
- func_fatal_help "invalid operation mode \`$mode'"
+ func_fatal_help "invalid operation mode \`$opt_mode'"
if test -n "$exec_cmd"; then
eval exec "$exec_cmd"
diff --git a/png.5 b/png.5
index c21a296..ec587cd 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "July 8, 2011"
+.TH PNG 5 "February 19, 2012"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION
diff --git a/png.c b/png.c
index 2defd78..4cdbad9 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
- * Last changed in libpng 1.4.6 [March 8, 2011]
+ * Last changed in libpng 1.5.7 [December 15, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,13 +11,10 @@
* and license in png.h
*/
-#define PNG_NO_EXTERN
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_9beta01 Your_png_h_is_not_version_1_4_9beta01;
+typedef png_libpng_version_1_5_10beta01 Your_png_h_is_not_version_1_5_10beta01;
/* Tells libpng that we have already handled the first "num_bytes" bytes
* of the PNG file signature. If the PNG data is embedded into another
@@ -46,14 +43,16 @@
* can simply check the remaining bytes for extra assurance. Returns
* an integer less than, equal to, or greater than zero if sig is found,
* respectively, to be less than, to match, or be greater than the correct
- * PNG signature (this is the same behaviour as strcmp, memcmp, etc).
+ * PNG signature (this is the same behavior as strcmp, memcmp, etc).
*/
int PNGAPI
-png_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check)
+png_sig_cmp(png_const_bytep sig, png_size_t start, png_size_t num_to_check)
{
png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
+
if (num_to_check > 8)
num_to_check = 8;
+
else if (num_to_check < 1)
return (-1);
@@ -69,9 +68,9 @@
#endif /* PNG_READ_SUPPORTED */
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-/* Function to allocate memory for zlib and clear it to 0. */
-voidpf /* PRIVATE */
-png_zalloc(voidpf png_ptr, uInt items, uInt size)
+/* Function to allocate memory for zlib */
+PNG_FUNCTION(voidpf /* PRIVATE */,
+png_zalloc,(voidpf png_ptr, uInt items, uInt size),PNG_ALLOCATED)
{
png_voidp ptr;
png_structp p=(png_structp)png_ptr;
@@ -80,6 +79,7 @@
if (png_ptr == NULL)
return (NULL);
+
if (items > PNG_UINT_32_MAX/size)
{
png_warning (p, "Potential overflow in png_zalloc()");
@@ -107,7 +107,8 @@
void /* PRIVATE */
png_reset_crc(png_structp png_ptr)
{
- png_ptr->crc = crc32(0, Z_NULL, 0);
+ /* The cast is safe because the crc is a 32 bit value. */
+ png_ptr->crc = (png_uint_32)crc32(0, Z_NULL, 0);
}
/* Calculate the CRC over a section of data. We can only pass as
@@ -116,24 +117,107 @@
* trouble of calculating it.
*/
void /* PRIVATE */
-png_calculate_crc(png_structp png_ptr, png_bytep ptr, png_size_t length)
+png_calculate_crc(png_structp png_ptr, png_const_bytep ptr, png_size_t length)
{
int need_crc = 1;
- if (png_ptr->chunk_name[0] & 0x20) /* ancillary */
+ if (PNG_CHUNK_ANCILLIARY(png_ptr->chunk_name))
{
if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
(PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
need_crc = 0;
}
- else /* critical */
+
+ else /* critical */
{
if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE)
need_crc = 0;
}
- if (need_crc)
- png_ptr->crc = crc32(png_ptr->crc, ptr, (uInt)length);
+ /* 'uLong' is defined as unsigned long, this means that on some systems it is
+ * a 64 bit value. crc32, however, returns 32 bits so the following cast is
+ * safe. 'uInt' may be no more than 16 bits, so it is necessary to perform a
+ * loop here.
+ */
+ if (need_crc && length > 0)
+ {
+ uLong crc = png_ptr->crc; /* Should never issue a warning */
+
+ do
+ {
+ uInt safeLength = (uInt)length;
+ if (safeLength == 0)
+ safeLength = (uInt)-1; /* evil, but safe */
+
+ crc = crc32(crc, ptr, safeLength);
+
+ /* The following should never issue compiler warnings, if they do the
+ * target system has characteristics that will probably violate other
+ * assumptions within the libpng code.
+ */
+ ptr += safeLength;
+ length -= safeLength;
+ }
+ while (length > 0);
+
+ /* And the following is always safe because the crc is only 32 bits. */
+ png_ptr->crc = (png_uint_32)crc;
+ }
+}
+
+/* Check a user supplied version number, called from both read and write
+ * functions that create a png_struct
+ */
+int
+png_user_version_check(png_structp png_ptr, png_const_charp user_png_ver)
+{
+ if (user_png_ver)
+ {
+ int i = 0;
+
+ do
+ {
+ if (user_png_ver[i] != png_libpng_ver[i])
+ png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
+ } while (png_libpng_ver[i++]);
+ }
+
+ else
+ png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
+
+ if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
+ {
+ /* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
+ * we must recompile any applications that use any older library version.
+ * For versions after libpng 1.0, we will be compatible, so we need
+ * only check the first digit.
+ */
+ if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
+ (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
+ (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
+ {
+#ifdef PNG_WARNINGS_SUPPORTED
+ size_t pos = 0;
+ char m[128];
+
+ pos = png_safecat(m, sizeof m, pos, "Application built with libpng-");
+ pos = png_safecat(m, sizeof m, pos, user_png_ver);
+ pos = png_safecat(m, sizeof m, pos, " but running with ");
+ pos = png_safecat(m, sizeof m, pos, png_libpng_ver);
+
+ png_warning(png_ptr, m);
+#endif
+
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ png_ptr->flags = 0;
+#endif
+
+ return 0;
+ }
+ }
+
+ /* Success return. */
+ return 1;
}
/* Allocate the memory for an info_struct for the application. We don't
@@ -142,8 +226,8 @@
* and png_info_init() so that applications that want to use a shared
* libpng don't have to be recompiled if png_info changes size.
*/
-png_infop PNGAPI
-png_create_info_struct(png_structp png_ptr)
+PNG_FUNCTION(png_infop,PNGAPI
+png_create_info_struct,(png_structp png_ptr),PNG_ALLOCATED)
{
png_infop info_ptr;
@@ -233,8 +317,10 @@
if (freer == PNG_DESTROY_WILL_FREE_DATA)
info_ptr->free_me |= mask;
+
else if (freer == PNG_USER_WILL_FREE_DATA)
info_ptr->free_me &= ~mask;
+
else
png_warning(png_ptr,
"Unknown freer parameter in png_data_freer");
@@ -261,6 +347,7 @@
info_ptr->text[num].key = NULL;
}
}
+
else
{
int i;
@@ -287,12 +374,10 @@
/* Free any sCAL entry */
if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
{
-#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
png_free(png_ptr, info_ptr->scal_s_width);
png_free(png_ptr, info_ptr->scal_s_height);
info_ptr->scal_s_width = NULL;
info_ptr->scal_s_height = NULL;
-#endif
info_ptr->valid &= ~PNG_INFO_sCAL;
}
#endif
@@ -346,6 +431,7 @@
info_ptr->splt_palettes[num].entries = NULL;
}
}
+
else
{
if (info_ptr->splt_palettes_num)
@@ -380,13 +466,14 @@
info_ptr->unknown_chunks[num].data = NULL;
}
}
+
else
{
int i;
if (info_ptr->unknown_chunks_num)
{
- for (i = 0; i < (int)info_ptr->unknown_chunks_num; i++)
+ for (i = 0; i < info_ptr->unknown_chunks_num; i++)
png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, i);
png_free(png_ptr, info_ptr->unknown_chunks);
@@ -435,10 +522,10 @@
}
#endif
- if (num == -1)
- info_ptr->free_me &= ~mask;
- else
- info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL);
+ if (num != -1)
+ mask &= ~PNG_FREE_MUL;
+
+ info_ptr->free_me &= ~mask;
}
/* This is an internal routine to free any memory that the info struct is
@@ -474,16 +561,17 @@
{
if (png_ptr == NULL)
return (NULL);
+
return (png_ptr->io_ptr);
}
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-#ifdef PNG_STDIO_SUPPORTED
+# ifdef PNG_STDIO_SUPPORTED
/* Initialize the default input/output functions for the PNG file. If you
* use your own read or write routines, you can call either png_set_read_fn()
* or png_set_write_fn() instead of png_init_io(). If you have defined
- * PNG_NO_STDIO, you must use a function of your own because "FILE *" isn't
- * necessarily available.
+ * PNG_NO_STDIO or otherwise disabled PNG_STDIO_SUPPORTED, you must use a
+ * function of your own because "FILE *" isn't necessarily available.
*/
void PNGAPI
png_init_io(png_structp png_ptr, png_FILE_p fp)
@@ -495,14 +583,14 @@
png_ptr->io_ptr = (png_voidp)fp;
}
-#endif
+# endif
-#ifdef PNG_TIME_RFC1123_SUPPORTED
+# ifdef PNG_TIME_RFC1123_SUPPORTED
/* Convert the supplied time into an RFC 1123 string suitable for use in
* a "Creation Time" or other text-based time string.
*/
-png_charp PNGAPI
-png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
+png_const_charp PNGAPI
+png_convert_to_rfc1123(png_structp png_ptr, png_const_timep ptime)
{
static PNG_CONST char short_months[12][4] =
{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
@@ -510,54 +598,74 @@
if (png_ptr == NULL)
return (NULL);
- if (png_ptr->time_buffer == NULL)
+
+ if (ptime->year > 9999 /* RFC1123 limitation */ ||
+ ptime->month == 0 || ptime->month > 12 ||
+ ptime->day == 0 || ptime->day > 31 ||
+ ptime->hour > 23 || ptime->minute > 59 ||
+ ptime->second > 60)
{
- png_ptr->time_buffer = (png_charp)png_malloc(png_ptr, (png_uint_32)(29*
- png_sizeof(char)));
+ png_warning(png_ptr, "Ignoring invalid time value");
+ return (NULL);
}
-#ifdef USE_FAR_KEYWORD
{
- char near_time_buf[29];
- png_snprintf6(near_time_buf, 29, "%d %s %d %02d:%02d:%02d +0000",
- ptime->day % 32, short_months[(ptime->month - 1) % 12],
- ptime->year, ptime->hour % 24, ptime->minute % 60,
- ptime->second % 61);
- png_memcpy(png_ptr->time_buffer, near_time_buf,
- 29*png_sizeof(char));
+ size_t pos = 0;
+ char number_buf[5]; /* enough for a four-digit year */
+
+# define APPEND_STRING(string)\
+ pos = png_safecat(png_ptr->time_buffer, sizeof png_ptr->time_buffer,\
+ pos, (string))
+# define APPEND_NUMBER(format, value)\
+ APPEND_STRING(PNG_FORMAT_NUMBER(number_buf, format, (value)))
+# define APPEND(ch)\
+ if (pos < (sizeof png_ptr->time_buffer)-1)\
+ png_ptr->time_buffer[pos++] = (ch)
+
+ APPEND_NUMBER(PNG_NUMBER_FORMAT_u, (unsigned)ptime->day);
+ APPEND(' ');
+ APPEND_STRING(short_months[(ptime->month - 1)]);
+ APPEND(' ');
+ APPEND_NUMBER(PNG_NUMBER_FORMAT_u, ptime->year);
+ APPEND(' ');
+ APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->hour);
+ APPEND(':');
+ APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->minute);
+ APPEND(':');
+ APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->second);
+ APPEND_STRING(" +0000"); /* This reliably terminates the buffer */
+
+# undef APPEND
+# undef APPEND_NUMBER
+# undef APPEND_STRING
}
-#else
- png_snprintf6(png_ptr->time_buffer, 29, "%d %s %d %02d:%02d:%02d +0000",
- ptime->day % 32, short_months[(ptime->month - 1) % 12],
- ptime->year, ptime->hour % 24, ptime->minute % 60,
- ptime->second % 61);
-#endif
- return ((png_charp)png_ptr->time_buffer);
+
+ return png_ptr->time_buffer;
}
-#endif /* PNG_TIME_RFC1123_SUPPORTED */
+# endif /* PNG_TIME_RFC1123_SUPPORTED */
#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
-png_charp PNGAPI
+png_const_charp PNGAPI
png_get_copyright(png_const_structp png_ptr)
{
PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
#ifdef PNG_STRING_COPYRIGHT
- return PNG_STRING_COPYRIGHT
+ return PNG_STRING_COPYRIGHT
#else
-#ifdef __STDC__
- return ((png_charp) PNG_STRING_NEWLINE \
- "libpng version 1.4.9beta01 - July 8, 2011" PNG_STRING_NEWLINE \
- "Copyright (c) 1998-2010 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
+# ifdef __STDC__
+ return PNG_STRING_NEWLINE \
+ "libpng version 1.5.10beta01 - February 19, 2012" PNG_STRING_NEWLINE \
+ "Copyright (c) 1998-2011 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
- PNG_STRING_NEWLINE);
-#else
- return ((png_charp) "libpng version 1.4.9beta01 - July 8, 2011\
- Copyright (c) 1998-2010 Glenn Randers-Pehrson\
+ PNG_STRING_NEWLINE;
+# else
+ return "libpng version 1.5.10beta01 - February 19, 2012\
+ Copyright (c) 1998-2011 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
- Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
-#endif
+ Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
+# endif
#endif
}
@@ -569,56 +677,74 @@
* png_get_header_ver(). Due to the version_nn_nn_nn typedef guard,
* it is guaranteed that png.c uses the correct version of png.h.
*/
-png_charp PNGAPI
+png_const_charp PNGAPI
png_get_libpng_ver(png_const_structp png_ptr)
{
/* Version of *.c files used when building libpng */
- PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
- return ((png_charp) PNG_LIBPNG_VER_STRING);
+ return png_get_header_ver(png_ptr);
}
-png_charp PNGAPI
+png_const_charp PNGAPI
png_get_header_ver(png_const_structp png_ptr)
{
/* Version of *.h files used when building libpng */
PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
- return ((png_charp) PNG_LIBPNG_VER_STRING);
+ return PNG_LIBPNG_VER_STRING;
}
-png_charp PNGAPI
+png_const_charp PNGAPI
png_get_header_version(png_const_structp png_ptr)
{
/* Returns longer string containing both version and date */
- png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
+ PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
#ifdef __STDC__
- return ((png_charp) PNG_HEADER_VERSION_STRING
-#ifndef PNG_READ_SUPPORTED
+ return PNG_HEADER_VERSION_STRING
+# ifndef PNG_READ_SUPPORTED
" (NO READ SUPPORT)"
-#endif
- PNG_STRING_NEWLINE);
+# endif
+ PNG_STRING_NEWLINE;
#else
- return ((png_charp) PNG_HEADER_VERSION_STRING);
+ return PNG_HEADER_VERSION_STRING;
#endif
}
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
int PNGAPI
-png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name)
+png_handle_as_unknown(png_structp png_ptr, png_const_bytep chunk_name)
{
/* Check chunk_name and return "keep" value if it's on the list, else 0 */
- int i;
- png_bytep p;
- if (png_ptr == NULL || chunk_name == NULL || png_ptr->num_chunk_list<=0)
- return 0;
- p = png_ptr->chunk_list + png_ptr->num_chunk_list*5 - 5;
- for (i = png_ptr->num_chunk_list; i; i--, p -= 5)
+ png_const_bytep p, p_end;
+
+ if (png_ptr == NULL || chunk_name == NULL || png_ptr->num_chunk_list <= 0)
+ return PNG_HANDLE_CHUNK_AS_DEFAULT;
+
+ p_end = png_ptr->chunk_list;
+ p = p_end + png_ptr->num_chunk_list*5; /* beyond end */
+
+ /* The code is the fifth byte after each four byte string. Historically this
+ * code was always searched from the end of the list, so it should continue
+ * to do so in case there are duplicated entries.
+ */
+ do /* num_chunk_list > 0, so at least one */
+ {
+ p -= 5;
if (!png_memcmp(chunk_name, p, 4))
- return ((int)*(p + 4));
- return 0;
+ return p[4];
+ }
+ while (p > p_end);
+
+ return PNG_HANDLE_CHUNK_AS_DEFAULT;
+}
+
+int /* PRIVATE */
+png_chunk_unknown_handling(png_structp png_ptr, png_uint_32 chunk_name)
+{
+ png_byte chunk_string[5];
+
+ PNG_CSTRING_FROM_CHUNK(chunk_string, chunk_name);
+ return png_handle_as_unknown(png_ptr, chunk_string);
}
#endif
-#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
#ifdef PNG_READ_SUPPORTED
/* This function, added to libpng-1.0.6g, is untested. */
@@ -627,6 +753,7 @@
{
if (png_ptr == NULL)
return Z_STREAM_ERROR;
+
return (inflateReset(&png_ptr->zstream));
}
#endif /* PNG_READ_SUPPORTED */
@@ -636,67 +763,18 @@
png_access_version_number(void)
{
/* Version of *.c files used when building libpng */
- return((png_uint_32) PNG_LIBPNG_VER);
+ return((png_uint_32)PNG_LIBPNG_VER);
}
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-#ifdef PNG_SIZE_T
-/* Added at libpng version 1.2.6 */
- PNG_EXTERN png_size_t PNGAPI png_convert_size PNGARG((size_t size));
-png_size_t PNGAPI
-png_convert_size(size_t size)
-{
- if (size > (png_size_t)-1)
- PNG_ABORT(); /* We haven't got access to png_ptr, so no png_error() */
- return ((png_size_t)size);
-}
-#endif /* PNG_SIZE_T */
+/* png_convert_size: a PNGAPI but no longer in png.h, so deleted
+ * at libpng 1.5.5!
+ */
/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */
-#ifdef PNG_cHRM_SUPPORTED
-#ifdef PNG_CHECK_cHRM_SUPPORTED
-
-/*
- * Multiply two 32-bit numbers, V1 and V2, using 32-bit
- * arithmetic, to produce a 64 bit result in the HI/LO words.
- *
- * A B
- * x C D
- * ------
- * AD || BD
- * AC || CB || 0
- *
- * where A and B are the high and low 16-bit words of V1,
- * C and D are the 16-bit words of V2, AD is the product of
- * A and D, and X || Y is (X << 16) + Y.
-*/
-
-void /* PRIVATE */
-png_64bit_product(long v1, long v2, unsigned long *hi_product,
- unsigned long *lo_product)
-{
- int a, b, c, d;
- long lo, hi, x, y;
-
- a = (v1 >> 16) & 0xffff;
- b = v1 & 0xffff;
- c = (v2 >> 16) & 0xffff;
- d = v2 & 0xffff;
-
- lo = b * d; /* BD */
- x = a * d + c * b; /* AD + CB */
- y = ((lo >> 16) & 0xffff) + x;
-
- lo = (lo & 0xffff) | ((y & 0xffff) << 16);
- hi = (y >> 16) & 0xffff;
-
- hi += a * c; /* AC */
-
- *hi_product = (unsigned long)hi;
- *lo_product = (unsigned long)lo;
-}
+# ifdef PNG_CHECK_cHRM_SUPPORTED
int /* PRIVATE */
png_check_cHRM_fixed(png_structp png_ptr,
@@ -712,6 +790,13 @@
if (png_ptr == NULL)
return 0;
+ /* (x,y,z) values are first limited to 0..100000 (PNG_FP_1), the white
+ * y must also be greater than 0. To test for the upper limit calculate
+ * (PNG_FP_1-y) - x must be <= to this for z to be >= 0 (and the expression
+ * cannot overflow.) At this point we know x and y are >= 0 and (x+y) is
+ * <= PNG_FP_1. The previous test on PNG_MAX_UINT_31 is removed because it
+ * pointless (and it produces compiler warnings!)
+ */
if (white_x < 0 || white_y <= 0 ||
red_x < 0 || red_y < 0 ||
green_x < 0 || green_y < 0 ||
@@ -721,35 +806,26 @@
"Ignoring attempt to set negative chromaticity value");
ret = 0;
}
- if (white_x > (png_fixed_point) PNG_UINT_31_MAX ||
- white_y > (png_fixed_point) PNG_UINT_31_MAX ||
- red_x > (png_fixed_point) PNG_UINT_31_MAX ||
- red_y > (png_fixed_point) PNG_UINT_31_MAX ||
- green_x > (png_fixed_point) PNG_UINT_31_MAX ||
- green_y > (png_fixed_point) PNG_UINT_31_MAX ||
- blue_x > (png_fixed_point) PNG_UINT_31_MAX ||
- blue_y > (png_fixed_point) PNG_UINT_31_MAX )
- {
- png_warning(png_ptr,
- "Ignoring attempt to set chromaticity value exceeding 21474.83");
- ret = 0;
- }
- if (white_x > 100000L - white_y)
+ /* And (x+y) must be <= PNG_FP_1 (so z is >= 0) */
+ if (white_x > PNG_FP_1 - white_y)
{
png_warning(png_ptr, "Invalid cHRM white point");
ret = 0;
}
- if (red_x > 100000L - red_y)
+
+ if (red_x > PNG_FP_1 - red_y)
{
png_warning(png_ptr, "Invalid cHRM red point");
ret = 0;
}
- if (green_x > 100000L - green_y)
+
+ if (green_x > PNG_FP_1 - green_y)
{
png_warning(png_ptr, "Invalid cHRM green point");
ret = 0;
}
- if (blue_x > 100000L - blue_y)
+
+ if (blue_x > PNG_FP_1 - blue_y)
{
png_warning(png_ptr, "Invalid cHRM blue point");
ret = 0;
@@ -767,8 +843,327 @@
return ret;
}
-#endif /* PNG_CHECK_cHRM_SUPPORTED */
-#endif /* PNG_cHRM_SUPPORTED */
+# endif /* PNG_CHECK_cHRM_SUPPORTED */
+
+#ifdef PNG_cHRM_SUPPORTED
+/* Added at libpng-1.5.5 to support read and write of true CIEXYZ values for
+ * cHRM, as opposed to using chromaticities. These internal APIs return
+ * non-zero on a parameter error. The X, Y and Z values are required to be
+ * positive and less than 1.0.
+ */
+int png_xy_from_XYZ(png_xy *xy, png_XYZ XYZ)
+{
+ png_int_32 d, dwhite, whiteX, whiteY;
+
+ d = XYZ.redX + XYZ.redY + XYZ.redZ;
+ if (!png_muldiv(&xy->redx, XYZ.redX, PNG_FP_1, d)) return 1;
+ if (!png_muldiv(&xy->redy, XYZ.redY, PNG_FP_1, d)) return 1;
+ dwhite = d;
+ whiteX = XYZ.redX;
+ whiteY = XYZ.redY;
+
+ d = XYZ.greenX + XYZ.greenY + XYZ.greenZ;
+ if (!png_muldiv(&xy->greenx, XYZ.greenX, PNG_FP_1, d)) return 1;
+ if (!png_muldiv(&xy->greeny, XYZ.greenY, PNG_FP_1, d)) return 1;
+ dwhite += d;
+ whiteX += XYZ.greenX;
+ whiteY += XYZ.greenY;
+
+ d = XYZ.blueX + XYZ.blueY + XYZ.blueZ;
+ if (!png_muldiv(&xy->bluex, XYZ.blueX, PNG_FP_1, d)) return 1;
+ if (!png_muldiv(&xy->bluey, XYZ.blueY, PNG_FP_1, d)) return 1;
+ dwhite += d;
+ whiteX += XYZ.blueX;
+ whiteY += XYZ.blueY;
+
+ /* The reference white is simply the same of the end-point (X,Y,Z) vectors,
+ * thus:
+ */
+ if (!png_muldiv(&xy->whitex, whiteX, PNG_FP_1, dwhite)) return 1;
+ if (!png_muldiv(&xy->whitey, whiteY, PNG_FP_1, dwhite)) return 1;
+
+ return 0;
+}
+
+int png_XYZ_from_xy(png_XYZ *XYZ, png_xy xy)
+{
+ png_fixed_point red_inverse, green_inverse, blue_scale;
+ png_fixed_point left, right, denominator;
+
+ /* Check xy and, implicitly, z. Note that wide gamut color spaces typically
+ * have end points with 0 tristimulus values (these are impossible end
+ * points, but they are used to cover the possible colors.)
+ */
+ if (xy.redx < 0 || xy.redx > PNG_FP_1) return 1;
+ if (xy.redy < 0 || xy.redy > PNG_FP_1-xy.redx) return 1;
+ if (xy.greenx < 0 || xy.greenx > PNG_FP_1) return 1;
+ if (xy.greeny < 0 || xy.greeny > PNG_FP_1-xy.greenx) return 1;
+ if (xy.bluex < 0 || xy.bluex > PNG_FP_1) return 1;
+ if (xy.bluey < 0 || xy.bluey > PNG_FP_1-xy.bluex) return 1;
+ if (xy.whitex < 0 || xy.whitex > PNG_FP_1) return 1;
+ if (xy.whitey < 0 || xy.whitey > PNG_FP_1-xy.whitex) return 1;
+
+ /* The reverse calculation is more difficult because the original tristimulus
+ * value had 9 independent values (red,green,blue)x(X,Y,Z) however only 8
+ * derived values were recorded in the cHRM chunk;
+ * (red,green,blue,white)x(x,y). This loses one degree of freedom and
+ * therefore an arbitrary ninth value has to be introduced to undo the
+ * original transformations.
+ *
+ * Think of the original end-points as points in (X,Y,Z) space. The
+ * chromaticity values (c) have the property:
+ *
+ * C
+ * c = ---------
+ * X + Y + Z
+ *
+ * For each c (x,y,z) from the corresponding original C (X,Y,Z). Thus the
+ * three chromaticity values (x,y,z) for each end-point obey the
+ * relationship:
+ *
+ * x + y + z = 1
+ *
+ * This describes the plane in (X,Y,Z) space that intersects each axis at the
+ * value 1.0; call this the chromaticity plane. Thus the chromaticity
+ * calculation has scaled each end-point so that it is on the x+y+z=1 plane
+ * and chromaticity is the intersection of the vector from the origin to the
+ * (X,Y,Z) value with the chromaticity plane.
+ *
+ * To fully invert the chromaticity calculation we would need the three
+ * end-point scale factors, (red-scale, green-scale, blue-scale), but these
+ * were not recorded. Instead we calculated the reference white (X,Y,Z) and
+ * recorded the chromaticity of this. The reference white (X,Y,Z) would have
+ * given all three of the scale factors since:
+ *
+ * color-C = color-c * color-scale
+ * white-C = red-C + green-C + blue-C
+ * = red-c*red-scale + green-c*green-scale + blue-c*blue-scale
+ *
+ * But cHRM records only white-x and white-y, so we have lost the white scale
+ * factor:
+ *
+ * white-C = white-c*white-scale
+ *
+ * To handle this the inverse transformation makes an arbitrary assumption
+ * about white-scale:
+ *
+ * Assume: white-Y = 1.0
+ * Hence: white-scale = 1/white-y
+ * Or: red-Y + green-Y + blue-Y = 1.0
+ *
+ * Notice the last statement of the assumption gives an equation in three of
+ * the nine values we want to calculate. 8 more equations come from the
+ * above routine as summarised at the top above (the chromaticity
+ * calculation):
+ *
+ * Given: color-x = color-X / (color-X + color-Y + color-Z)
+ * Hence: (color-x - 1)*color-X + color.x*color-Y + color.x*color-Z = 0
+ *
+ * This is 9 simultaneous equations in the 9 variables "color-C" and can be
+ * solved by Cramer's rule. Cramer's rule requires calculating 10 9x9 matrix
+ * determinants, however this is not as bad as it seems because only 28 of
+ * the total of 90 terms in the various matrices are non-zero. Nevertheless
+ * Cramer's rule is notoriously numerically unstable because the determinant
+ * calculation involves the difference of large, but similar, numbers. It is
+ * difficult to be sure that the calculation is stable for real world values
+ * and it is certain that it becomes unstable where the end points are close
+ * together.
+ *
+ * So this code uses the perhaps slighly less optimal but more understandable
+ * and totally obvious approach of calculating color-scale.
+ *
+ * This algorithm depends on the precision in white-scale and that is
+ * (1/white-y), so we can immediately see that as white-y approaches 0 the
+ * accuracy inherent in the cHRM chunk drops off substantially.
+ *
+ * libpng arithmetic: a simple invertion of the above equations
+ * ------------------------------------------------------------
+ *
+ * white_scale = 1/white-y
+ * white-X = white-x * white-scale
+ * white-Y = 1.0
+ * white-Z = (1 - white-x - white-y) * white_scale
+ *
+ * white-C = red-C + green-C + blue-C
+ * = red-c*red-scale + green-c*green-scale + blue-c*blue-scale
+ *
+ * This gives us three equations in (red-scale,green-scale,blue-scale) where
+ * all the coefficients are now known:
+ *
+ * red-x*red-scale + green-x*green-scale + blue-x*blue-scale
+ * = white-x/white-y
+ * red-y*red-scale + green-y*green-scale + blue-y*blue-scale = 1
+ * red-z*red-scale + green-z*green-scale + blue-z*blue-scale
+ * = (1 - white-x - white-y)/white-y
+ *
+ * In the last equation color-z is (1 - color-x - color-y) so we can add all
+ * three equations together to get an alternative third:
+ *
+ * red-scale + green-scale + blue-scale = 1/white-y = white-scale
+ *
+ * So now we have a Cramer's rule solution where the determinants are just
+ * 3x3 - far more tractible. Unfortunately 3x3 determinants still involve
+ * multiplication of three coefficients so we can't guarantee to avoid
+ * overflow in the libpng fixed point representation. Using Cramer's rule in
+ * floating point is probably a good choice here, but it's not an option for
+ * fixed point. Instead proceed to simplify the first two equations by
+ * eliminating what is likely to be the largest value, blue-scale:
+ *
+ * blue-scale = white-scale - red-scale - green-scale
+ *
+ * Hence:
+ *
+ * (red-x - blue-x)*red-scale + (green-x - blue-x)*green-scale =
+ * (white-x - blue-x)*white-scale
+ *
+ * (red-y - blue-y)*red-scale + (green-y - blue-y)*green-scale =
+ * 1 - blue-y*white-scale
+ *
+ * And now we can trivially solve for (red-scale,green-scale):
+ *
+ * green-scale =
+ * (white-x - blue-x)*white-scale - (red-x - blue-x)*red-scale
+ * -----------------------------------------------------------
+ * green-x - blue-x
+ *
+ * red-scale =
+ * 1 - blue-y*white-scale - (green-y - blue-y) * green-scale
+ * ---------------------------------------------------------
+ * red-y - blue-y
+ *
+ * Hence:
+ *
+ * red-scale =
+ * ( (green-x - blue-x) * (white-y - blue-y) -
+ * (green-y - blue-y) * (white-x - blue-x) ) / white-y
+ * -------------------------------------------------------------------------
+ * (green-x - blue-x)*(red-y - blue-y)-(green-y - blue-y)*(red-x - blue-x)
+ *
+ * green-scale =
+ * ( (red-y - blue-y) * (white-x - blue-x) -
+ * (red-x - blue-x) * (white-y - blue-y) ) / white-y
+ * -------------------------------------------------------------------------
+ * (green-x - blue-x)*(red-y - blue-y)-(green-y - blue-y)*(red-x - blue-x)
+ *
+ * Accuracy:
+ * The input values have 5 decimal digits of accuracy. The values are all in
+ * the range 0 < value < 1, so simple products are in the same range but may
+ * need up to 10 decimal digits to preserve the original precision and avoid
+ * underflow. Because we are using a 32-bit signed representation we cannot
+ * match this; the best is a little over 9 decimal digits, less than 10.
+ *
+ * The approach used here is to preserve the maximum precision within the
+ * signed representation. Because the red-scale calculation above uses the
+ * difference between two products of values that must be in the range -1..+1
+ * it is sufficient to divide the product by 7; ceil(100,000/32767*2). The
+ * factor is irrelevant in the calculation because it is applied to both
+ * numerator and denominator.
+ *
+ * Note that the values of the differences of the products of the
+ * chromaticities in the above equations tend to be small, for example for
+ * the sRGB chromaticities they are:
+ *
+ * red numerator: -0.04751
+ * green numerator: -0.08788
+ * denominator: -0.2241 (without white-y multiplication)
+ *
+ * The resultant Y coefficients from the chromaticities of some widely used
+ * color space definitions are (to 15 decimal places):
+ *
+ * sRGB
+ * 0.212639005871510 0.715168678767756 0.072192315360734
+ * Kodak ProPhoto
+ * 0.288071128229293 0.711843217810102 0.000085653960605
+ * Adobe RGB
+ * 0.297344975250536 0.627363566255466 0.075291458493998
+ * Adobe Wide Gamut RGB
+ * 0.258728243040113 0.724682314948566 0.016589442011321
+ */
+ /* By the argument, above overflow should be impossible here. The return
+ * value of 2 indicates an internal error to the caller.
+ */
+ if (!png_muldiv(&left, xy.greenx-xy.bluex, xy.redy - xy.bluey, 7)) return 2;
+ if (!png_muldiv(&right, xy.greeny-xy.bluey, xy.redx - xy.bluex, 7)) return 2;
+ denominator = left - right;
+
+ /* Now find the red numerator. */
+ if (!png_muldiv(&left, xy.greenx-xy.bluex, xy.whitey-xy.bluey, 7)) return 2;
+ if (!png_muldiv(&right, xy.greeny-xy.bluey, xy.whitex-xy.bluex, 7)) return 2;
+
+ /* Overflow is possible here and it indicates an extreme set of PNG cHRM
+ * chunk values. This calculation actually returns the reciprocal of the
+ * scale value because this allows us to delay the multiplication of white-y
+ * into the denominator, which tends to produce a small number.
+ */
+ if (!png_muldiv(&red_inverse, xy.whitey, denominator, left-right) ||
+ red_inverse <= xy.whitey /* r+g+b scales = white scale */)
+ return 1;
+
+ /* Similarly for green_inverse: */
+ if (!png_muldiv(&left, xy.redy-xy.bluey, xy.whitex-xy.bluex, 7)) return 2;
+ if (!png_muldiv(&right, xy.redx-xy.bluex, xy.whitey-xy.bluey, 7)) return 2;
+ if (!png_muldiv(&green_inverse, xy.whitey, denominator, left-right) ||
+ green_inverse <= xy.whitey)
+ return 1;
+
+ /* And the blue scale, the checks above guarantee this can't overflow but it
+ * can still produce 0 for extreme cHRM values.
+ */
+ blue_scale = png_reciprocal(xy.whitey) - png_reciprocal(red_inverse) -
+ png_reciprocal(green_inverse);
+ if (blue_scale <= 0) return 1;
+
+
+ /* And fill in the png_XYZ: */
+ if (!png_muldiv(&XYZ->redX, xy.redx, PNG_FP_1, red_inverse)) return 1;
+ if (!png_muldiv(&XYZ->redY, xy.redy, PNG_FP_1, red_inverse)) return 1;
+ if (!png_muldiv(&XYZ->redZ, PNG_FP_1 - xy.redx - xy.redy, PNG_FP_1,
+ red_inverse))
+ return 1;
+
+ if (!png_muldiv(&XYZ->greenX, xy.greenx, PNG_FP_1, green_inverse)) return 1;
+ if (!png_muldiv(&XYZ->greenY, xy.greeny, PNG_FP_1, green_inverse)) return 1;
+ if (!png_muldiv(&XYZ->greenZ, PNG_FP_1 - xy.greenx - xy.greeny, PNG_FP_1,
+ green_inverse))
+ return 1;
+
+ if (!png_muldiv(&XYZ->blueX, xy.bluex, blue_scale, PNG_FP_1)) return 1;
+ if (!png_muldiv(&XYZ->blueY, xy.bluey, blue_scale, PNG_FP_1)) return 1;
+ if (!png_muldiv(&XYZ->blueZ, PNG_FP_1 - xy.bluex - xy.bluey, blue_scale,
+ PNG_FP_1))
+ return 1;
+
+ return 0; /*success*/
+}
+
+int png_XYZ_from_xy_checked(png_structp png_ptr, png_XYZ *XYZ, png_xy xy)
+{
+ switch (png_XYZ_from_xy(XYZ, xy))
+ {
+ case 0: /* success */
+ return 1;
+
+ case 1:
+ /* The chunk may be technically valid, but we got png_fixed_point
+ * overflow while trying to get XYZ values out of it. This is
+ * entirely benign - the cHRM chunk is pretty extreme.
+ */
+ png_warning(png_ptr,
+ "extreme cHRM chunk cannot be converted to tristimulus values");
+ break;
+
+ default:
+ /* libpng is broken; this should be a warning but if it happens we
+ * want error reports so for the moment it is an error.
+ */
+ png_error(png_ptr, "internal error in png_XYZ_from_xy");
+ break;
+ }
+
+ /* ERROR RETURN */
+ return 0;
+}
+#endif
void /* PRIVATE */
png_check_IHDR(png_structp png_ptr,
@@ -791,21 +1186,22 @@
error = 1;
}
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
- if (width > png_ptr->user_width_max || width > PNG_USER_WIDTH_MAX)
-#else
+# ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (width > png_ptr->user_width_max)
+
+# else
if (width > PNG_USER_WIDTH_MAX)
-#endif
+# endif
{
png_warning(png_ptr, "Image width exceeds user limit in IHDR");
error = 1;
}
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
- if (height > png_ptr->user_height_max || height > PNG_USER_HEIGHT_MAX)
-#else
+# ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (height > png_ptr->user_height_max)
+# else
if (height > PNG_USER_HEIGHT_MAX)
-#endif
+# endif
{
png_warning(png_ptr, "Image height exceeds user limit in IHDR");
error = 1;
@@ -817,15 +1213,15 @@
error = 1;
}
- if ( height > PNG_UINT_31_MAX)
+ if (height > PNG_UINT_31_MAX)
{
png_warning(png_ptr, "Invalid image height in IHDR");
error = 1;
}
- if ( width > (PNG_UINT_32_MAX
+ if (width > (PNG_UINT_32_MAX
>> 3) /* 8-byte RGBA pixels */
- - 64 /* bigrowbuf hack */
+ - 48 /* bigrowbuf hack */
- 1 /* filter byte */
- 7*8 /* rounding of width to multiple of 8 pixels */
- 8) /* extra max_pixel_depth pad */
@@ -867,7 +1263,7 @@
error = 1;
}
-#ifdef PNG_MNG_FEATURES_SUPPORTED
+# ifdef PNG_MNG_FEATURES_SUPPORTED
/* Accept filter_method 64 (intrapixel differencing) only if
* 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
* 2. Libpng did not read a PNG signature (this filter_method is only
@@ -884,10 +1280,10 @@
if (filter_type != PNG_FILTER_TYPE_BASE)
{
if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
- (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
- ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) &&
- (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
+ (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
+ ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) &&
+ (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
{
png_warning(png_ptr, "Unknown filter method in IHDR");
error = 1;
@@ -900,15 +1296,1575 @@
}
}
-#else
+# else
if (filter_type != PNG_FILTER_TYPE_BASE)
{
png_warning(png_ptr, "Unknown filter method in IHDR");
error = 1;
}
-#endif
+# endif
if (error == 1)
png_error(png_ptr, "Invalid IHDR data");
}
+
+#if defined(PNG_sCAL_SUPPORTED) || defined(PNG_pCAL_SUPPORTED)
+/* ASCII to fp functions */
+/* Check an ASCII formated floating point value, see the more detailed
+ * comments in pngpriv.h
+ */
+/* The following is used internally to preserve the sticky flags */
+#define png_fp_add(state, flags) ((state) |= (flags))
+#define png_fp_set(state, value) ((state) = (value) | ((state) & PNG_FP_STICKY))
+
+int /* PRIVATE */
+png_check_fp_number(png_const_charp string, png_size_t size, int *statep,
+ png_size_tp whereami)
+{
+ int state = *statep;
+ png_size_t i = *whereami;
+
+ while (i < size)
+ {
+ int type;
+ /* First find the type of the next character */
+ switch (string[i])
+ {
+ case 43: type = PNG_FP_SAW_SIGN; break;
+ case 45: type = PNG_FP_SAW_SIGN + PNG_FP_NEGATIVE; break;
+ case 46: type = PNG_FP_SAW_DOT; break;
+ case 48: type = PNG_FP_SAW_DIGIT; break;
+ case 49: case 50: case 51: case 52:
+ case 53: case 54: case 55: case 56:
+ case 57: type = PNG_FP_SAW_DIGIT + PNG_FP_NONZERO; break;
+ case 69:
+ case 101: type = PNG_FP_SAW_E; break;
+ default: goto PNG_FP_End;
+ }
+
+ /* Now deal with this type according to the current
+ * state, the type is arranged to not overlap the
+ * bits of the PNG_FP_STATE.
+ */
+ switch ((state & PNG_FP_STATE) + (type & PNG_FP_SAW_ANY))
+ {
+ case PNG_FP_INTEGER + PNG_FP_SAW_SIGN:
+ if (state & PNG_FP_SAW_ANY)
+ goto PNG_FP_End; /* not a part of the number */
+
+ png_fp_add(state, type);
+ break;
+
+ case PNG_FP_INTEGER + PNG_FP_SAW_DOT:
+ /* Ok as trailer, ok as lead of fraction. */
+ if (state & PNG_FP_SAW_DOT) /* two dots */
+ goto PNG_FP_End;
+
+ else if (state & PNG_FP_SAW_DIGIT) /* trailing dot? */
+ png_fp_add(state, type);
+
+ else
+ png_fp_set(state, PNG_FP_FRACTION | type);
+
+ break;
+
+ case PNG_FP_INTEGER + PNG_FP_SAW_DIGIT:
+ if (state & PNG_FP_SAW_DOT) /* delayed fraction */
+ png_fp_set(state, PNG_FP_FRACTION | PNG_FP_SAW_DOT);
+
+ png_fp_add(state, type | PNG_FP_WAS_VALID);
+
+ break;
+
+ case PNG_FP_INTEGER + PNG_FP_SAW_E:
+ if ((state & PNG_FP_SAW_DIGIT) == 0)
+ goto PNG_FP_End;
+
+ png_fp_set(state, PNG_FP_EXPONENT);
+
+ break;
+
+ /* case PNG_FP_FRACTION + PNG_FP_SAW_SIGN:
+ goto PNG_FP_End; ** no sign in fraction */
+
+ /* case PNG_FP_FRACTION + PNG_FP_SAW_DOT:
+ goto PNG_FP_End; ** Because SAW_DOT is always set */
+
+ case PNG_FP_FRACTION + PNG_FP_SAW_DIGIT:
+ png_fp_add(state, type | PNG_FP_WAS_VALID);
+ break;
+
+ case PNG_FP_FRACTION + PNG_FP_SAW_E:
+ /* This is correct because the trailing '.' on an
+ * integer is handled above - so we can only get here
+ * with the sequence ".E" (with no preceding digits).
+ */
+ if ((state & PNG_FP_SAW_DIGIT) == 0)
+ goto PNG_FP_End;
+
+ png_fp_set(state, PNG_FP_EXPONENT);
+
+ break;
+
+ case PNG_FP_EXPONENT + PNG_FP_SAW_SIGN:
+ if (state & PNG_FP_SAW_ANY)
+ goto PNG_FP_End; /* not a part of the number */
+
+ png_fp_add(state, PNG_FP_SAW_SIGN);
+
+ break;
+
+ /* case PNG_FP_EXPONENT + PNG_FP_SAW_DOT:
+ goto PNG_FP_End; */
+
+ case PNG_FP_EXPONENT + PNG_FP_SAW_DIGIT:
+ png_fp_add(state, PNG_FP_SAW_DIGIT | PNG_FP_WAS_VALID);
+
+ break;
+
+ /* case PNG_FP_EXPONEXT + PNG_FP_SAW_E:
+ goto PNG_FP_End; */
+
+ default: goto PNG_FP_End; /* I.e. break 2 */
+ }
+
+ /* The character seems ok, continue. */
+ ++i;
+ }
+
+PNG_FP_End:
+ /* Here at the end, update the state and return the correct
+ * return code.
+ */
+ *statep = state;
+ *whereami = i;
+
+ return (state & PNG_FP_SAW_DIGIT) != 0;
+}
+
+
+/* The same but for a complete string. */
+int
+png_check_fp_string(png_const_charp string, png_size_t size)
+{
+ int state=0;
+ png_size_t char_index=0;
+
+ if (png_check_fp_number(string, size, &state, &char_index) &&
+ (char_index == size || string[char_index] == 0))
+ return state /* must be non-zero - see above */;
+
+ return 0; /* i.e. fail */
+}
+#endif /* pCAL or sCAL */
+
+#ifdef PNG_READ_sCAL_SUPPORTED
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+/* Utility used below - a simple accurate power of ten from an integral
+ * exponent.
+ */
+static double
+png_pow10(int power)
+{
+ int recip = 0;
+ double d = 1;
+
+ /* Handle negative exponent with a reciprocal at the end because
+ * 10 is exact whereas .1 is inexact in base 2
+ */
+ if (power < 0)
+ {
+ if (power < DBL_MIN_10_EXP) return 0;
+ recip = 1, power = -power;
+ }
+
+ if (power > 0)
+ {
+ /* Decompose power bitwise. */
+ double mult = 10;
+ do
+ {
+ if (power & 1) d *= mult;
+ mult *= mult;
+ power >>= 1;
+ }
+ while (power > 0);
+
+ if (recip) d = 1/d;
+ }
+ /* else power is 0 and d is 1 */
+
+ return d;
+}
+
+/* Function to format a floating point value in ASCII with a given
+ * precision.
+ */
+void /* PRIVATE */
+png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
+ double fp, unsigned int precision)
+{
+ /* We use standard functions from math.h, but not printf because
+ * that would require stdio. The caller must supply a buffer of
+ * sufficient size or we will png_error. The tests on size and
+ * the space in ascii[] consumed are indicated below.
+ */
+ if (precision < 1)
+ precision = DBL_DIG;
+
+ /* Enforce the limit of the implementation precision too. */
+ if (precision > DBL_DIG+1)
+ precision = DBL_DIG+1;
+
+ /* Basic sanity checks */
+ if (size >= precision+5) /* See the requirements below. */
+ {
+ if (fp < 0)
+ {
+ fp = -fp;
+ *ascii++ = 45; /* '-' PLUS 1 TOTAL 1 */
+ --size;
+ }
+
+ if (fp >= DBL_MIN && fp <= DBL_MAX)
+ {
+ int exp_b10; /* A base 10 exponent */
+ double base; /* 10^exp_b10 */
+
+ /* First extract a base 10 exponent of the number,
+ * the calculation below rounds down when converting
+ * from base 2 to base 10 (multiply by log10(2) -
+ * 0.3010, but 77/256 is 0.3008, so exp_b10 needs to
+ * be increased. Note that the arithmetic shift
+ * performs a floor() unlike C arithmetic - using a
+ * C multiply would break the following for negative
+ * exponents.
+ */
+ (void)frexp(fp, &exp_b10); /* exponent to base 2 */
+
+ exp_b10 = (exp_b10 * 77) >> 8; /* <= exponent to base 10 */
+
+ /* Avoid underflow here. */
+ base = png_pow10(exp_b10); /* May underflow */
+
+ while (base < DBL_MIN || base < fp)
+ {
+ /* And this may overflow. */
+ double test = png_pow10(exp_b10+1);
+
+ if (test <= DBL_MAX)
+ ++exp_b10, base = test;
+
+ else
+ break;
+ }
+
+ /* Normalize fp and correct exp_b10, after this fp is in the
+ * range [.1,1) and exp_b10 is both the exponent and the digit
+ * *before* which the decimal point should be inserted
+ * (starting with 0 for the first digit). Note that this
+ * works even if 10^exp_b10 is out of range because of the
+ * test on DBL_MAX above.
+ */
+ fp /= base;
+ while (fp >= 1) fp /= 10, ++exp_b10;
+
+ /* Because of the code above fp may, at this point, be
+ * less than .1, this is ok because the code below can
+ * handle the leading zeros this generates, so no attempt
+ * is made to correct that here.
+ */
+
+ {
+ int czero, clead, cdigits;
+ char exponent[10];
+
+ /* Allow up to two leading zeros - this will not lengthen
+ * the number compared to using E-n.
+ */
+ if (exp_b10 < 0 && exp_b10 > -3) /* PLUS 3 TOTAL 4 */
+ {
+ czero = -exp_b10; /* PLUS 2 digits: TOTAL 3 */
+ exp_b10 = 0; /* Dot added below before first output. */
+ }
+ else
+ czero = 0; /* No zeros to add */
+
+ /* Generate the digit list, stripping trailing zeros and
+ * inserting a '.' before a digit if the exponent is 0.
+ */
+ clead = czero; /* Count of leading zeros */
+ cdigits = 0; /* Count of digits in list. */
+
+ do
+ {
+ double d;
+
+ fp *= 10;
+ /* Use modf here, not floor and subtract, so that
+ * the separation is done in one step. At the end
+ * of the loop don't break the number into parts so
+ * that the final digit is rounded.
+ */
+ if (cdigits+czero-clead+1 < (int)precision)
+ fp = modf(fp, &d);
+
+ else
+ {
+ d = floor(fp + .5);
+
+ if (d > 9)
+ {
+ /* Rounding up to 10, handle that here. */
+ if (czero > 0)
+ {
+ --czero, d = 1;
+ if (cdigits == 0) --clead;
+ }
+ else
+ {
+ while (cdigits > 0 && d > 9)
+ {
+ int ch = *--ascii;
+
+ if (exp_b10 != (-1))
+ ++exp_b10;
+
+ else if (ch == 46)
+ {
+ ch = *--ascii, ++size;
+ /* Advance exp_b10 to '1', so that the
+ * decimal point happens after the
+ * previous digit.
+ */
+ exp_b10 = 1;
+ }
+
+ --cdigits;
+ d = ch - 47; /* I.e. 1+(ch-48) */
+ }
+
+ /* Did we reach the beginning? If so adjust the
+ * exponent but take into account the leading
+ * decimal point.
+ */
+ if (d > 9) /* cdigits == 0 */
+ {
+ if (exp_b10 == (-1))
+ {
+ /* Leading decimal point (plus zeros?), if
+ * we lose the decimal point here it must
+ * be reentered below.
+ */
+ int ch = *--ascii;
+
+ if (ch == 46)
+ ++size, exp_b10 = 1;
+
+ /* Else lost a leading zero, so 'exp_b10' is
+ * still ok at (-1)
+ */
+ }
+ else
+ ++exp_b10;
+
+ /* In all cases we output a '1' */
+ d = 1;
+ }
+ }
+ }
+ fp = 0; /* Guarantees termination below. */
+ }
+
+ if (d == 0)
+ {
+ ++czero;
+ if (cdigits == 0) ++clead;
+ }
+ else
+ {
+ /* Included embedded zeros in the digit count. */
+ cdigits += czero - clead;
+ clead = 0;
+
+ while (czero > 0)
+ {
+ /* exp_b10 == (-1) means we just output the decimal
+ * place - after the DP don't adjust 'exp_b10' any
+ * more!
+ */
+ if (exp_b10 != (-1))
+ {
+ if (exp_b10 == 0) *ascii++ = 46, --size;
+ /* PLUS 1: TOTAL 4 */
+ --exp_b10;
+ }
+ *ascii++ = 48, --czero;
+ }
+
+ if (exp_b10 != (-1))
+ {
+ if (exp_b10 == 0) *ascii++ = 46, --size; /* counted
+ above */
+ --exp_b10;
+ }
+ *ascii++ = (char)(48 + (int)d), ++cdigits;
+ }
+ }
+ while (cdigits+czero-clead < (int)precision && fp > DBL_MIN);
+
+ /* The total output count (max) is now 4+precision */
+
+ /* Check for an exponent, if we don't need one we are
+ * done and just need to terminate the string. At
+ * this point exp_b10==(-1) is effectively if flag - it got
+ * to '-1' because of the decrement after outputing
+ * the decimal point above (the exponent required is
+ * *not* -1!)
+ */
+ if (exp_b10 >= (-1) && exp_b10 <= 2)
+ {
+ /* The following only happens if we didn't output the
+ * leading zeros above for negative exponent, so this
+ * doest add to the digit requirement. Note that the
+ * two zeros here can only be output if the two leading
+ * zeros were *not* output, so this doesn't increase
+ * the output count.
+ */
+ while (--exp_b10 >= 0) *ascii++ = 48;
+
+ *ascii = 0;
+
+ /* Total buffer requirement (including the '\0') is
+ * 5+precision - see check at the start.
+ */
+ return;
+ }
+
+ /* Here if an exponent is required, adjust size for
+ * the digits we output but did not count. The total
+ * digit output here so far is at most 1+precision - no
+ * decimal point and no leading or trailing zeros have
+ * been output.
+ */
+ size -= cdigits;
+
+ *ascii++ = 69, --size; /* 'E': PLUS 1 TOTAL 2+precision */
+
+ /* The following use of an unsigned temporary avoids ambiguities in
+ * the signed arithmetic on exp_b10 and permits GCC at least to do
+ * better optimization.
+ */
+ {
+ unsigned int uexp_b10;
+
+ if (exp_b10 < 0)
+ {
+ *ascii++ = 45, --size; /* '-': PLUS 1 TOTAL 3+precision */
+ uexp_b10 = -exp_b10;
+ }
+
+ else
+ uexp_b10 = exp_b10;
+
+ cdigits = 0;
+
+ while (uexp_b10 > 0)
+ {
+ exponent[cdigits++] = (char)(48 + uexp_b10 % 10);
+ uexp_b10 /= 10;
+ }
+ }
+
+ /* Need another size check here for the exponent digits, so
+ * this need not be considered above.
+ */
+ if ((int)size > cdigits)
+ {
+ while (cdigits > 0) *ascii++ = exponent[--cdigits];
+
+ *ascii = 0;
+
+ return;
+ }
+ }
+ }
+ else if (!(fp >= DBL_MIN))
+ {
+ *ascii++ = 48; /* '0' */
+ *ascii = 0;
+ return;
+ }
+ else
+ {
+ *ascii++ = 105; /* 'i' */
+ *ascii++ = 110; /* 'n' */
+ *ascii++ = 102; /* 'f' */
+ *ascii = 0;
+ return;
+ }
+ }
+
+ /* Here on buffer too small. */
+ png_error(png_ptr, "ASCII conversion buffer too small");
+}
+
+# endif /* FLOATING_POINT */
+
+# ifdef PNG_FIXED_POINT_SUPPORTED
+/* Function to format a fixed point value in ASCII.
+ */
+void /* PRIVATE */
+png_ascii_from_fixed(png_structp png_ptr, png_charp ascii, png_size_t size,
+ png_fixed_point fp)
+{
+ /* Require space for 10 decimal digits, a decimal point, a minus sign and a
+ * trailing \0, 13 characters:
+ */
+ if (size > 12)
+ {
+ png_uint_32 num;
+
+ /* Avoid overflow here on the minimum integer. */
+ if (fp < 0)
+ *ascii++ = 45, --size, num = -fp;
+ else
+ num = fp;
+
+ if (num <= 0x80000000) /* else overflowed */
+ {
+ unsigned int ndigits = 0, first = 16 /* flag value */;
+ char digits[10];
+
+ while (num)
+ {
+ /* Split the low digit off num: */
+ unsigned int tmp = num/10;
+ num -= tmp*10;
+ digits[ndigits++] = (char)(48 + num);
+ /* Record the first non-zero digit, note that this is a number
+ * starting at 1, it's not actually the array index.
+ */
+ if (first == 16 && num > 0)
+ first = ndigits;
+ num = tmp;
+ }
+
+ if (ndigits > 0)
+ {
+ while (ndigits > 5) *ascii++ = digits[--ndigits];
+ /* The remaining digits are fractional digits, ndigits is '5' or
+ * smaller at this point. It is certainly not zero. Check for a
+ * non-zero fractional digit:
+ */
+ if (first <= 5)
+ {
+ unsigned int i;
+ *ascii++ = 46; /* decimal point */
+ /* ndigits may be <5 for small numbers, output leading zeros
+ * then ndigits digits to first:
+ */
+ i = 5;
+ while (ndigits < i) *ascii++ = 48, --i;
+ while (ndigits >= first) *ascii++ = digits[--ndigits];
+ /* Don't output the trailing zeros! */
+ }
+ }
+ else
+ *ascii++ = 48;
+
+ /* And null terminate the string: */
+ *ascii = 0;
+ return;
+ }
+ }
+
+ /* Here on buffer too small. */
+ png_error(png_ptr, "ASCII conversion buffer too small");
+}
+# endif /* FIXED_POINT */
+#endif /* READ_SCAL */
+
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && \
+ !defined(PNG_FIXED_POINT_MACRO_SUPPORTED)
+png_fixed_point
+png_fixed(png_structp png_ptr, double fp, png_const_charp text)
+{
+ double r = floor(100000 * fp + .5);
+
+ if (r > 2147483647. || r < -2147483648.)
+ png_fixed_error(png_ptr, text);
+
+ return (png_fixed_point)r;
+}
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || \
+ defined(PNG_INCH_CONVERSIONS_SUPPORTED) || defined(PNG__READ_pHYs_SUPPORTED)
+/* muldiv functions */
+/* This API takes signed arguments and rounds the result to the nearest
+ * integer (or, for a fixed point number - the standard argument - to
+ * the nearest .00001). Overflow and divide by zero are signalled in
+ * the result, a boolean - true on success, false on overflow.
+ */
+int
+png_muldiv(png_fixed_point_p res, png_fixed_point a, png_int_32 times,
+ png_int_32 divisor)
+{
+ /* Return a * times / divisor, rounded. */
+ if (divisor != 0)
+ {
+ if (a == 0 || times == 0)
+ {
+ *res = 0;
+ return 1;
+ }
+ else
+ {
+#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = a;
+ r *= times;
+ r /= divisor;
+ r = floor(r+.5);
+
+ /* A png_fixed_point is a 32-bit integer. */
+ if (r <= 2147483647. && r >= -2147483648.)
+ {
+ *res = (png_fixed_point)r;
+ return 1;
+ }
+#else
+ int negative = 0;
+ png_uint_32 A, T, D;
+ png_uint_32 s16, s32, s00;
+
+ if (a < 0)
+ negative = 1, A = -a;
+ else
+ A = a;
+
+ if (times < 0)
+ negative = !negative, T = -times;
+ else
+ T = times;
+
+ if (divisor < 0)
+ negative = !negative, D = -divisor;
+ else
+ D = divisor;
+
+ /* Following can't overflow because the arguments only
+ * have 31 bits each, however the result may be 32 bits.
+ */
+ s16 = (A >> 16) * (T & 0xffff) +
+ (A & 0xffff) * (T >> 16);
+ /* Can't overflow because the a*times bit is only 30
+ * bits at most.
+ */
+ s32 = (A >> 16) * (T >> 16) + (s16 >> 16);
+ s00 = (A & 0xffff) * (T & 0xffff);
+
+ s16 = (s16 & 0xffff) << 16;
+ s00 += s16;
+
+ if (s00 < s16)
+ ++s32; /* carry */
+
+ if (s32 < D) /* else overflow */
+ {
+ /* s32.s00 is now the 64-bit product, do a standard
+ * division, we know that s32 < D, so the maximum
+ * required shift is 31.
+ */
+ int bitshift = 32;
+ png_fixed_point result = 0; /* NOTE: signed */
+
+ while (--bitshift >= 0)
+ {
+ png_uint_32 d32, d00;
+
+ if (bitshift > 0)
+ d32 = D >> (32-bitshift), d00 = D << bitshift;
+
+ else
+ d32 = 0, d00 = D;
+
+ if (s32 > d32)
+ {
+ if (s00 < d00) --s32; /* carry */
+ s32 -= d32, s00 -= d00, result += 1<<bitshift;
+ }
+
+ else
+ if (s32 == d32 && s00 >= d00)
+ s32 = 0, s00 -= d00, result += 1<<bitshift;
+ }
+
+ /* Handle the rounding. */
+ if (s00 >= (D >> 1))
+ ++result;
+
+ if (negative)
+ result = -result;
+
+ /* Check for overflow. */
+ if ((negative && result <= 0) || (!negative && result >= 0))
+ {
+ *res = result;
+ return 1;
+ }
+ }
+#endif
+ }
+ }
+
+ return 0;
+}
+#endif /* READ_GAMMA || INCH_CONVERSIONS */
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED)
+/* The following is for when the caller doesn't much care about the
+ * result.
+ */
+png_fixed_point
+png_muldiv_warn(png_structp png_ptr, png_fixed_point a, png_int_32 times,
+ png_int_32 divisor)
+{
+ png_fixed_point result;
+
+ if (png_muldiv(&result, a, times, divisor))
+ return result;
+
+ png_warning(png_ptr, "fixed point overflow ignored");
+ return 0;
+}
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED /* more fixed point functions for gammma */
+/* Calculate a reciprocal, return 0 on div-by-zero or overflow. */
+png_fixed_point
+png_reciprocal(png_fixed_point a)
+{
+#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = floor(1E10/a+.5);
+
+ if (r <= 2147483647. && r >= -2147483648.)
+ return (png_fixed_point)r;
+#else
+ png_fixed_point res;
+
+ if (png_muldiv(&res, 100000, 100000, a))
+ return res;
+#endif
+
+ return 0; /* error/overflow */
+}
+
+/* A local convenience routine. */
+static png_fixed_point
+png_product2(png_fixed_point a, png_fixed_point b)
+{
+ /* The required result is 1/a * 1/b; the following preserves accuracy. */
+#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = a * 1E-5;
+ r *= b;
+ r = floor(r+.5);
+
+ if (r <= 2147483647. && r >= -2147483648.)
+ return (png_fixed_point)r;
+#else
+ png_fixed_point res;
+
+ if (png_muldiv(&res, a, b, 100000))
+ return res;
+#endif
+
+ return 0; /* overflow */
+}
+
+/* The inverse of the above. */
+png_fixed_point
+png_reciprocal2(png_fixed_point a, png_fixed_point b)
+{
+ /* The required result is 1/a * 1/b; the following preserves accuracy. */
+#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = 1E15/a;
+ r /= b;
+ r = floor(r+.5);
+
+ if (r <= 2147483647. && r >= -2147483648.)
+ return (png_fixed_point)r;
+#else
+ /* This may overflow because the range of png_fixed_point isn't symmetric,
+ * but this API is only used for the product of file and screen gamma so it
+ * doesn't matter that the smallest number it can produce is 1/21474, not
+ * 1/100000
+ */
+ png_fixed_point res = png_product2(a, b);
+
+ if (res != 0)
+ return png_reciprocal(res);
+#endif
+
+ return 0; /* overflow */
+}
+#endif /* READ_GAMMA */
+
+#ifdef PNG_CHECK_cHRM_SUPPORTED
+/* Added at libpng version 1.2.34 (Dec 8, 2008) and 1.4.0 (Jan 2,
+ * 2010: moved from pngset.c) */
+/*
+ * Multiply two 32-bit numbers, V1 and V2, using 32-bit
+ * arithmetic, to produce a 64-bit result in the HI/LO words.
+ *
+ * A B
+ * x C D
+ * ------
+ * AD || BD
+ * AC || CB || 0
+ *
+ * where A and B are the high and low 16-bit words of V1,
+ * C and D are the 16-bit words of V2, AD is the product of
+ * A and D, and X || Y is (X << 16) + Y.
+*/
+
+void /* PRIVATE */
+png_64bit_product (long v1, long v2, unsigned long *hi_product,
+ unsigned long *lo_product)
+{
+ int a, b, c, d;
+ long lo, hi, x, y;
+
+ a = (v1 >> 16) & 0xffff;
+ b = v1 & 0xffff;
+ c = (v2 >> 16) & 0xffff;
+ d = v2 & 0xffff;
+
+ lo = b * d; /* BD */
+ x = a * d + c * b; /* AD + CB */
+ y = ((lo >> 16) & 0xffff) + x;
+
+ lo = (lo & 0xffff) | ((y & 0xffff) << 16);
+ hi = (y >> 16) & 0xffff;
+
+ hi += a * c; /* AC */
+
+ *hi_product = (unsigned long)hi;
+ *lo_product = (unsigned long)lo;
+}
+#endif /* CHECK_cHRM */
+
+#ifdef PNG_READ_GAMMA_SUPPORTED /* gamma table code */
+#ifndef PNG_FLOATING_ARITHMETIC_SUPPORTED
+/* Fixed point gamma.
+ *
+ * To calculate gamma this code implements fast log() and exp() calls using only
+ * fixed point arithmetic. This code has sufficient precision for either 8-bit
+ * or 16-bit sample values.
+ *
+ * The tables used here were calculated using simple 'bc' programs, but C double
+ * precision floating point arithmetic would work fine. The programs are given
+ * at the head of each table.
+ *
+ * 8-bit log table
+ * This is a table of -log(value/255)/log(2) for 'value' in the range 128 to
+ * 255, so it's the base 2 logarithm of a normalized 8-bit floating point
+ * mantissa. The numbers are 32-bit fractions.
+ */
+static png_uint_32
+png_8bit_l2[128] =
+{
+# ifdef PNG_DO_BC
+ for (i=128;i<256;++i) { .5 - l(i/255)/l(2)*65536*65536; }
+# else
+ 4270715492U, 4222494797U, 4174646467U, 4127164793U, 4080044201U, 4033279239U,
+ 3986864580U, 3940795015U, 3895065449U, 3849670902U, 3804606499U, 3759867474U,
+ 3715449162U, 3671346997U, 3627556511U, 3584073329U, 3540893168U, 3498011834U,
+ 3455425220U, 3413129301U, 3371120137U, 3329393864U, 3287946700U, 3246774933U,
+ 3205874930U, 3165243125U, 3124876025U, 3084770202U, 3044922296U, 3005329011U,
+ 2965987113U, 2926893432U, 2888044853U, 2849438323U, 2811070844U, 2772939474U,
+ 2735041326U, 2697373562U, 2659933400U, 2622718104U, 2585724991U, 2548951424U,
+ 2512394810U, 2476052606U, 2439922311U, 2404001468U, 2368287663U, 2332778523U,
+ 2297471715U, 2262364947U, 2227455964U, 2192742551U, 2158222529U, 2123893754U,
+ 2089754119U, 2055801552U, 2022034013U, 1988449497U, 1955046031U, 1921821672U,
+ 1888774511U, 1855902668U, 1823204291U, 1790677560U, 1758320682U, 1726131893U,
+ 1694109454U, 1662251657U, 1630556815U, 1599023271U, 1567649391U, 1536433567U,
+ 1505374214U, 1474469770U, 1443718700U, 1413119487U, 1382670639U, 1352370686U,
+ 1322218179U, 1292211689U, 1262349810U, 1232631153U, 1203054352U, 1173618059U,
+ 1144320946U, 1115161701U, 1086139034U, 1057251672U, 1028498358U, 999877854U,
+ 971388940U, 943030410U, 914801076U, 886699767U, 858725327U, 830876614U,
+ 803152505U, 775551890U, 748073672U, 720716771U, 693480120U, 666362667U,
+ 639363374U, 612481215U, 585715177U, 559064263U, 532527486U, 506103872U,
+ 479792461U, 453592303U, 427502463U, 401522014U, 375650043U, 349885648U,
+ 324227938U, 298676034U, 273229066U, 247886176U, 222646516U, 197509248U,
+ 172473545U, 147538590U, 122703574U, 97967701U, 73330182U, 48790236U,
+ 24347096U, 0U
+# endif
+
+#if 0
+ /* The following are the values for 16-bit tables - these work fine for the
+ * 8-bit conversions but produce very slightly larger errors in the 16-bit
+ * log (about 1.2 as opposed to 0.7 absolute error in the final value). To
+ * use these all the shifts below must be adjusted appropriately.
+ */
+ 65166, 64430, 63700, 62976, 62257, 61543, 60835, 60132, 59434, 58741, 58054,
+ 57371, 56693, 56020, 55352, 54689, 54030, 53375, 52726, 52080, 51439, 50803,
+ 50170, 49542, 48918, 48298, 47682, 47070, 46462, 45858, 45257, 44661, 44068,
+ 43479, 42894, 42312, 41733, 41159, 40587, 40020, 39455, 38894, 38336, 37782,
+ 37230, 36682, 36137, 35595, 35057, 34521, 33988, 33459, 32932, 32408, 31887,
+ 31369, 30854, 30341, 29832, 29325, 28820, 28319, 27820, 27324, 26830, 26339,
+ 25850, 25364, 24880, 24399, 23920, 23444, 22970, 22499, 22029, 21562, 21098,
+ 20636, 20175, 19718, 19262, 18808, 18357, 17908, 17461, 17016, 16573, 16132,
+ 15694, 15257, 14822, 14390, 13959, 13530, 13103, 12678, 12255, 11834, 11415,
+ 10997, 10582, 10168, 9756, 9346, 8937, 8531, 8126, 7723, 7321, 6921, 6523,
+ 6127, 5732, 5339, 4947, 4557, 4169, 3782, 3397, 3014, 2632, 2251, 1872, 1495,
+ 1119, 744, 372
+#endif
+};
+
+PNG_STATIC png_int_32
+png_log8bit(unsigned int x)
+{
+ unsigned int lg2 = 0;
+ /* Each time 'x' is multiplied by 2, 1 must be subtracted off the final log,
+ * because the log is actually negate that means adding 1. The final
+ * returned value thus has the range 0 (for 255 input) to 7.994 (for 1
+ * input), return 7.99998 for the overflow (log 0) case - so the result is
+ * always at most 19 bits.
+ */
+ if ((x &= 0xff) == 0)
+ return 0xffffffff;
+
+ if ((x & 0xf0) == 0)
+ lg2 = 4, x <<= 4;
+
+ if ((x & 0xc0) == 0)
+ lg2 += 2, x <<= 2;
+
+ if ((x & 0x80) == 0)
+ lg2 += 1, x <<= 1;
+
+ /* result is at most 19 bits, so this cast is safe: */
+ return (png_int_32)((lg2 << 16) + ((png_8bit_l2[x-128]+32768)>>16));
+}
+
+/* The above gives exact (to 16 binary places) log2 values for 8-bit images,
+ * for 16-bit images we use the most significant 8 bits of the 16-bit value to
+ * get an approximation then multiply the approximation by a correction factor
+ * determined by the remaining up to 8 bits. This requires an additional step
+ * in the 16-bit case.
+ *
+ * We want log2(value/65535), we have log2(v'/255), where:
+ *
+ * value = v' * 256 + v''
+ * = v' * f
+ *
+ * So f is value/v', which is equal to (256+v''/v') since v' is in the range 128
+ * to 255 and v'' is in the range 0 to 255 f will be in the range 256 to less
+ * than 258. The final factor also needs to correct for the fact that our 8-bit
+ * value is scaled by 255, whereas the 16-bit values must be scaled by 65535.
+ *
+ * This gives a final formula using a calculated value 'x' which is value/v' and
+ * scaling by 65536 to match the above table:
+ *
+ * log2(x/257) * 65536
+ *
+ * Since these numbers are so close to '1' we can use simple linear
+ * interpolation between the two end values 256/257 (result -368.61) and 258/257
+ * (result 367.179). The values used below are scaled by a further 64 to give
+ * 16-bit precision in the interpolation:
+ *
+ * Start (256): -23591
+ * Zero (257): 0
+ * End (258): 23499
+ */
+PNG_STATIC png_int_32
+png_log16bit(png_uint_32 x)
+{
+ unsigned int lg2 = 0;
+
+ /* As above, but now the input has 16 bits. */
+ if ((x &= 0xffff) == 0)
+ return 0xffffffff;
+
+ if ((x & 0xff00) == 0)
+ lg2 = 8, x <<= 8;
+
+ if ((x & 0xf000) == 0)
+ lg2 += 4, x <<= 4;
+
+ if ((x & 0xc000) == 0)
+ lg2 += 2, x <<= 2;
+
+ if ((x & 0x8000) == 0)
+ lg2 += 1, x <<= 1;
+
+ /* Calculate the base logarithm from the top 8 bits as a 28-bit fractional
+ * value.
+ */
+ lg2 <<= 28;
+ lg2 += (png_8bit_l2[(x>>8)-128]+8) >> 4;
+
+ /* Now we need to interpolate the factor, this requires a division by the top
+ * 8 bits. Do this with maximum precision.
+ */
+ x = ((x << 16) + (x >> 9)) / (x >> 8);
+
+ /* Since we divided by the top 8 bits of 'x' there will be a '1' at 1<<24,
+ * the value at 1<<16 (ignoring this) will be 0 or 1; this gives us exactly
+ * 16 bits to interpolate to get the low bits of the result. Round the
+ * answer. Note that the end point values are scaled by 64 to retain overall
+ * precision and that 'lg2' is current scaled by an extra 12 bits, so adjust
+ * the overall scaling by 6-12. Round at every step.
+ */
+ x -= 1U << 24;
+
+ if (x <= 65536U) /* <= '257' */
+ lg2 += ((23591U * (65536U-x)) + (1U << (16+6-12-1))) >> (16+6-12);
+
+ else
+ lg2 -= ((23499U * (x-65536U)) + (1U << (16+6-12-1))) >> (16+6-12);
+
+ /* Safe, because the result can't have more than 20 bits: */
+ return (png_int_32)((lg2 + 2048) >> 12);
+}
+
+/* The 'exp()' case must invert the above, taking a 20-bit fixed point
+ * logarithmic value and returning a 16 or 8-bit number as appropriate. In
+ * each case only the low 16 bits are relevant - the fraction - since the
+ * integer bits (the top 4) simply determine a shift.
+ *
+ * The worst case is the 16-bit distinction between 65535 and 65534, this
+ * requires perhaps spurious accuracy in the decoding of the logarithm to
+ * distinguish log2(65535/65534.5) - 10^-5 or 17 bits. There is little chance
+ * of getting this accuracy in practice.
+ *
+ * To deal with this the following exp() function works out the exponent of the
+ * frational part of the logarithm by using an accurate 32-bit value from the
+ * top four fractional bits then multiplying in the remaining bits.
+ */
+static png_uint_32
+png_32bit_exp[16] =
+{
+# ifdef PNG_DO_BC
+ for (i=0;i<16;++i) { .5 + e(-i/16*l(2))*2^32; }
+# else
+ /* NOTE: the first entry is deliberately set to the maximum 32-bit value. */
+ 4294967295U, 4112874773U, 3938502376U, 3771522796U, 3611622603U, 3458501653U,
+ 3311872529U, 3171459999U, 3037000500U, 2908241642U, 2784941738U, 2666869345U,
+ 2553802834U, 2445529972U, 2341847524U, 2242560872U
+# endif
+};
+
+/* Adjustment table; provided to explain the numbers in the code below. */
+#ifdef PNG_DO_BC
+for (i=11;i>=0;--i){ print i, " ", (1 - e(-(2^i)/65536*l(2))) * 2^(32-i), "\n"}
+ 11 44937.64284865548751208448
+ 10 45180.98734845585101160448
+ 9 45303.31936980687359311872
+ 8 45364.65110595323018870784
+ 7 45395.35850361789624614912
+ 6 45410.72259715102037508096
+ 5 45418.40724413220722311168
+ 4 45422.25021786898173001728
+ 3 45424.17186732298419044352
+ 2 45425.13273269940811464704
+ 1 45425.61317555035558641664
+ 0 45425.85339951654943850496
+#endif
+
+PNG_STATIC png_uint_32
+png_exp(png_fixed_point x)
+{
+ if (x > 0 && x <= 0xfffff) /* Else overflow or zero (underflow) */
+ {
+ /* Obtain a 4-bit approximation */
+ png_uint_32 e = png_32bit_exp[(x >> 12) & 0xf];
+
+ /* Incorporate the low 12 bits - these decrease the returned value by
+ * multiplying by a number less than 1 if the bit is set. The multiplier
+ * is determined by the above table and the shift. Notice that the values
+ * converge on 45426 and this is used to allow linear interpolation of the
+ * low bits.
+ */
+ if (x & 0x800)
+ e -= (((e >> 16) * 44938U) + 16U) >> 5;
+
+ if (x & 0x400)
+ e -= (((e >> 16) * 45181U) + 32U) >> 6;
+
+ if (x & 0x200)
+ e -= (((e >> 16) * 45303U) + 64U) >> 7;
+
+ if (x & 0x100)
+ e -= (((e >> 16) * 45365U) + 128U) >> 8;
+
+ if (x & 0x080)
+ e -= (((e >> 16) * 45395U) + 256U) >> 9;
+
+ if (x & 0x040)
+ e -= (((e >> 16) * 45410U) + 512U) >> 10;
+
+ /* And handle the low 6 bits in a single block. */
+ e -= (((e >> 16) * 355U * (x & 0x3fU)) + 256U) >> 9;
+
+ /* Handle the upper bits of x. */
+ e >>= x >> 16;
+ return e;
+ }
+
+ /* Check for overflow */
+ if (x <= 0)
+ return png_32bit_exp[0];
+
+ /* Else underflow */
+ return 0;
+}
+
+PNG_STATIC png_byte
+png_exp8bit(png_fixed_point lg2)
+{
+ /* Get a 32-bit value: */
+ png_uint_32 x = png_exp(lg2);
+
+ /* Convert the 32-bit value to 0..255 by multiplying by 256-1, note that the
+ * second, rounding, step can't overflow because of the first, subtraction,
+ * step.
+ */
+ x -= x >> 8;
+ return (png_byte)((x + 0x7fffffU) >> 24);
+}
+
+PNG_STATIC png_uint_16
+png_exp16bit(png_fixed_point lg2)
+{
+ /* Get a 32-bit value: */
+ png_uint_32 x = png_exp(lg2);
+
+ /* Convert the 32-bit value to 0..65535 by multiplying by 65536-1: */
+ x -= x >> 16;
+ return (png_uint_16)((x + 32767U) >> 16);
+}
+#endif /* FLOATING_ARITHMETIC */
+
+png_byte
+png_gamma_8bit_correct(unsigned int value, png_fixed_point gamma_val)
+{
+ if (value > 0 && value < 255)
+ {
+# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = floor(255*pow(value/255.,gamma_val*.00001)+.5);
+ return (png_byte)r;
+# else
+ png_int_32 lg2 = png_log8bit(value);
+ png_fixed_point res;
+
+ if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1))
+ return png_exp8bit(res);
+
+ /* Overflow. */
+ value = 0;
+# endif
+ }
+
+ return (png_byte)value;
+}
+
+png_uint_16
+png_gamma_16bit_correct(unsigned int value, png_fixed_point gamma_val)
+{
+ if (value > 0 && value < 65535)
+ {
+# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = floor(65535*pow(value/65535.,gamma_val*.00001)+.5);
+ return (png_uint_16)r;
+# else
+ png_int_32 lg2 = png_log16bit(value);
+ png_fixed_point res;
+
+ if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1))
+ return png_exp16bit(res);
+
+ /* Overflow. */
+ value = 0;
+# endif
+ }
+
+ return (png_uint_16)value;
+}
+
+/* This does the right thing based on the bit_depth field of the
+ * png_struct, interpreting values as 8-bit or 16-bit. While the result
+ * is nominally a 16-bit value if bit depth is 8 then the result is
+ * 8-bit (as are the arguments.)
+ */
+png_uint_16 /* PRIVATE */
+png_gamma_correct(png_structp png_ptr, unsigned int value,
+ png_fixed_point gamma_val)
+{
+ if (png_ptr->bit_depth == 8)
+ return png_gamma_8bit_correct(value, gamma_val);
+
+ else
+ return png_gamma_16bit_correct(value, gamma_val);
+}
+
+/* This is the shared test on whether a gamma value is 'significant' - whether
+ * it is worth doing gamma correction.
+ */
+int /* PRIVATE */
+png_gamma_significant(png_fixed_point gamma_val)
+{
+ return gamma_val < PNG_FP_1 - PNG_GAMMA_THRESHOLD_FIXED ||
+ gamma_val > PNG_FP_1 + PNG_GAMMA_THRESHOLD_FIXED;
+}
+
+/* Internal function to build a single 16-bit table - the table consists of
+ * 'num' 256-entry subtables, where 'num' is determined by 'shift' - the amount
+ * to shift the input values right (or 16-number_of_signifiant_bits).
+ *
+ * The caller is responsible for ensuring that the table gets cleaned up on
+ * png_error (i.e. if one of the mallocs below fails) - i.e. the *table argument
+ * should be somewhere that will be cleaned.
+ */
+static void
+png_build_16bit_table(png_structp png_ptr, png_uint_16pp *ptable,
+ PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
+{
+ /* Various values derived from 'shift': */
+ PNG_CONST unsigned int num = 1U << (8U - shift);
+ PNG_CONST unsigned int max = (1U << (16U - shift))-1U;
+ PNG_CONST unsigned int max_by_2 = 1U << (15U-shift);
+ unsigned int i;
+
+ png_uint_16pp table = *ptable =
+ (png_uint_16pp)png_calloc(png_ptr, num * png_sizeof(png_uint_16p));
+
+ for (i = 0; i < num; i++)
+ {
+ png_uint_16p sub_table = table[i] =
+ (png_uint_16p)png_malloc(png_ptr, 256 * png_sizeof(png_uint_16));
+
+ /* The 'threshold' test is repeated here because it can arise for one of
+ * the 16-bit tables even if the others don't hit it.
+ */
+ if (png_gamma_significant(gamma_val))
+ {
+ /* The old code would overflow at the end and this would cause the
+ * 'pow' function to return a result >1, resulting in an
+ * arithmetic error. This code follows the spec exactly; ig is
+ * the recovered input sample, it always has 8-16 bits.
+ *
+ * We want input * 65535/max, rounded, the arithmetic fits in 32
+ * bits (unsigned) so long as max <= 32767.
+ */
+ unsigned int j;
+ for (j = 0; j < 256; j++)
+ {
+ png_uint_32 ig = (j << (8-shift)) + i;
+# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ /* Inline the 'max' scaling operation: */
+ double d = floor(65535*pow(ig/(double)max, gamma_val*.00001)+.5);
+ sub_table[j] = (png_uint_16)d;
+# else
+ if (shift)
+ ig = (ig * 65535U + max_by_2)/max;
+
+ sub_table[j] = png_gamma_16bit_correct(ig, gamma_val);
+# endif
+ }
+ }
+ else
+ {
+ /* We must still build a table, but do it the fast way. */
+ unsigned int j;
+
+ for (j = 0; j < 256; j++)
+ {
+ png_uint_32 ig = (j << (8-shift)) + i;
+
+ if (shift)
+ ig = (ig * 65535U + max_by_2)/max;
+
+ sub_table[j] = (png_uint_16)ig;
+ }
+ }
+ }
+}
+
+/* NOTE: this function expects the *inverse* of the overall gamma transformation
+ * required.
+ */
+static void
+png_build_16to8_table(png_structp png_ptr, png_uint_16pp *ptable,
+ PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
+{
+ PNG_CONST unsigned int num = 1U << (8U - shift);
+ PNG_CONST unsigned int max = (1U << (16U - shift))-1U;
+ unsigned int i;
+ png_uint_32 last;
+
+ png_uint_16pp table = *ptable =
+ (png_uint_16pp)png_calloc(png_ptr, num * png_sizeof(png_uint_16p));
+
+ /* 'num' is the number of tables and also the number of low bits of the
+ * input 16-bit value used to select a table. Each table is itself indexed
+ * by the high 8 bits of the value.
+ */
+ for (i = 0; i < num; i++)
+ table[i] = (png_uint_16p)png_malloc(png_ptr,
+ 256 * png_sizeof(png_uint_16));
+
+ /* 'gamma_val' is set to the reciprocal of the value calculated above, so
+ * pow(out,g) is an *input* value. 'last' is the last input value set.
+ *
+ * In the loop 'i' is used to find output values. Since the output is
+ * 8-bit there are only 256 possible values. The tables are set up to
+ * select the closest possible output value for each input by finding
+ * the input value at the boundary between each pair of output values
+ * and filling the table up to that boundary with the lower output
+ * value.
+ *
+ * The boundary values are 0.5,1.5..253.5,254.5. Since these are 9-bit
+ * values the code below uses a 16-bit value in i; the values start at
+ * 128.5 (for 0.5) and step by 257, for a total of 254 values (the last
+ * entries are filled with 255). Start i at 128 and fill all 'last'
+ * table entries <= 'max'
+ */
+ last = 0;
+ for (i = 0; i < 255; ++i) /* 8-bit output value */
+ {
+ /* Find the corresponding maximum input value */
+ png_uint_16 out = (png_uint_16)(i * 257U); /* 16-bit output value */
+
+ /* Find the boundary value in 16 bits: */
+ png_uint_32 bound = png_gamma_16bit_correct(out+128U, gamma_val);
+
+ /* Adjust (round) to (16-shift) bits: */
+ bound = (bound * max + 32768U)/65535U + 1U;
+
+ while (last < bound)
+ {
+ table[last & (0xffU >> shift)][last >> (8U - shift)] = out;
+ last++;
+ }
+ }
+
+ /* And fill in the final entries. */
+ while (last < (num << 8))
+ {
+ table[last & (0xff >> shift)][last >> (8U - shift)] = 65535U;
+ last++;
+ }
+}
+
+/* Build a single 8-bit table: same as the 16-bit case but much simpler (and
+ * typically much faster). Note that libpng currently does no sBIT processing
+ * (apparently contrary to the spec) so a 256-entry table is always generated.
+ */
+static void
+png_build_8bit_table(png_structp png_ptr, png_bytepp ptable,
+ PNG_CONST png_fixed_point gamma_val)
+{
+ unsigned int i;
+ png_bytep table = *ptable = (png_bytep)png_malloc(png_ptr, 256);
+
+ if (png_gamma_significant(gamma_val)) for (i=0; i<256; i++)
+ table[i] = png_gamma_8bit_correct(i, gamma_val);
+
+ else for (i=0; i<256; ++i)
+ table[i] = (png_byte)i;
+}
+
+/* Used from png_read_destroy and below to release the memory used by the gamma
+ * tables.
+ */
+void /* PRIVATE */
+png_destroy_gamma_table(png_structp png_ptr)
+{
+ png_free(png_ptr, png_ptr->gamma_table);
+ png_ptr->gamma_table = NULL;
+
+ if (png_ptr->gamma_16_table != NULL)
+ {
+ int i;
+ int istop = (1 << (8 - png_ptr->gamma_shift));
+ for (i = 0; i < istop; i++)
+ {
+ png_free(png_ptr, png_ptr->gamma_16_table[i]);
+ }
+ png_free(png_ptr, png_ptr->gamma_16_table);
+ png_ptr->gamma_16_table = NULL;
+ }
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+ png_free(png_ptr, png_ptr->gamma_from_1);
+ png_ptr->gamma_from_1 = NULL;
+ png_free(png_ptr, png_ptr->gamma_to_1);
+ png_ptr->gamma_to_1 = NULL;
+
+ if (png_ptr->gamma_16_from_1 != NULL)
+ {
+ int i;
+ int istop = (1 << (8 - png_ptr->gamma_shift));
+ for (i = 0; i < istop; i++)
+ {
+ png_free(png_ptr, png_ptr->gamma_16_from_1[i]);
+ }
+ png_free(png_ptr, png_ptr->gamma_16_from_1);
+ png_ptr->gamma_16_from_1 = NULL;
+ }
+ if (png_ptr->gamma_16_to_1 != NULL)
+ {
+ int i;
+ int istop = (1 << (8 - png_ptr->gamma_shift));
+ for (i = 0; i < istop; i++)
+ {
+ png_free(png_ptr, png_ptr->gamma_16_to_1[i]);
+ }
+ png_free(png_ptr, png_ptr->gamma_16_to_1);
+ png_ptr->gamma_16_to_1 = NULL;
+ }
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+}
+
+/* We build the 8- or 16-bit gamma tables here. Note that for 16-bit
+ * tables, we don't make a full table if we are reducing to 8-bit in
+ * the future. Note also how the gamma_16 tables are segmented so that
+ * we don't need to allocate > 64K chunks for a full 16-bit table.
+ */
+void /* PRIVATE */
+png_build_gamma_table(png_structp png_ptr, int bit_depth)
+{
+ png_debug(1, "in png_build_gamma_table");
+
+ /* Remove any existing table; this copes with multiple calls to
+ * png_read_update_info. The warning is because building the gamma tables
+ * multiple times is a performance hit - it's harmless but the ability to call
+ * png_read_update_info() multiple times is new in 1.5.6 so it seems sensible
+ * to warn if the app introduces such a hit.
+ */
+ if (png_ptr->gamma_table != NULL || png_ptr->gamma_16_table != NULL)
+ {
+ png_warning(png_ptr, "gamma table being rebuilt");
+ png_destroy_gamma_table(png_ptr);
+ }
+
+ if (bit_depth <= 8)
+ {
+ png_build_8bit_table(png_ptr, &png_ptr->gamma_table,
+ png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->gamma,
+ png_ptr->screen_gamma) : PNG_FP_1);
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+ if (png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY))
+ {
+ png_build_8bit_table(png_ptr, &png_ptr->gamma_to_1,
+ png_reciprocal(png_ptr->gamma));
+
+ png_build_8bit_table(png_ptr, &png_ptr->gamma_from_1,
+ png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) :
+ png_ptr->gamma/* Probably doing rgb_to_gray */);
+ }
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+ }
+ else
+ {
+ png_byte shift, sig_bit;
+
+ if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ {
+ sig_bit = png_ptr->sig_bit.red;
+
+ if (png_ptr->sig_bit.green > sig_bit)
+ sig_bit = png_ptr->sig_bit.green;
+
+ if (png_ptr->sig_bit.blue > sig_bit)
+ sig_bit = png_ptr->sig_bit.blue;
+ }
+ else
+ sig_bit = png_ptr->sig_bit.gray;
+
+ /* 16-bit gamma code uses this equation:
+ *
+ * ov = table[(iv & 0xff) >> gamma_shift][iv >> 8]
+ *
+ * Where 'iv' is the input color value and 'ov' is the output value -
+ * pow(iv, gamma).
+ *
+ * Thus the gamma table consists of up to 256 256-entry tables. The table
+ * is selected by the (8-gamma_shift) most significant of the low 8 bits of
+ * the color value then indexed by the upper 8 bits:
+ *
+ * table[low bits][high 8 bits]
+ *
+ * So the table 'n' corresponds to all those 'iv' of:
+ *
+ * <all high 8-bit values><n << gamma_shift>..<(n+1 << gamma_shift)-1>
+ *
+ */
+ if (sig_bit > 0 && sig_bit < 16U)
+ shift = (png_byte)(16U - sig_bit); /* shift == insignificant bits */
+
+ else
+ shift = 0; /* keep all 16 bits */
+
+ if (png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8))
+ {
+ /* PNG_MAX_GAMMA_8 is the number of bits to keep - effectively
+ * the significant bits in the *input* when the output will
+ * eventually be 8 bits. By default it is 11.
+ */
+ if (shift < (16U - PNG_MAX_GAMMA_8))
+ shift = (16U - PNG_MAX_GAMMA_8);
+ }
+
+ if (shift > 8U)
+ shift = 8U; /* Guarantees at least one table! */
+
+ png_ptr->gamma_shift = shift;
+
+#ifdef PNG_16BIT_SUPPORTED
+ /* NOTE: prior to 1.5.4 this test used to include PNG_BACKGROUND (now
+ * PNG_COMPOSE). This effectively smashed the background calculation for
+ * 16-bit output because the 8-bit table assumes the result will be reduced
+ * to 8 bits.
+ */
+ if (png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8))
+#endif
+ png_build_16to8_table(png_ptr, &png_ptr->gamma_16_table, shift,
+ png_ptr->screen_gamma > 0 ? png_product2(png_ptr->gamma,
+ png_ptr->screen_gamma) : PNG_FP_1);
+
+#ifdef PNG_16BIT_SUPPORTED
+ else
+ png_build_16bit_table(png_ptr, &png_ptr->gamma_16_table, shift,
+ png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->gamma,
+ png_ptr->screen_gamma) : PNG_FP_1);
+#endif
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+ if (png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY))
+ {
+ png_build_16bit_table(png_ptr, &png_ptr->gamma_16_to_1, shift,
+ png_reciprocal(png_ptr->gamma));
+
+ /* Notice that the '16 from 1' table should be full precision, however
+ * the lookup on this table still uses gamma_shift, so it can't be.
+ * TODO: fix this.
+ */
+ png_build_16bit_table(png_ptr, &png_ptr->gamma_16_from_1, shift,
+ png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) :
+ png_ptr->gamma/* Probably doing rgb_to_gray */);
+ }
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+ }
+}
+#endif /* READ_GAMMA */
#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
diff --git a/png.h b/png.h
index bdbe588..aaf6151 100644
--- a/png.h
+++ b/png.h
@@ -1,26 +1,26 @@
/* png.h - header file for PNG reference library
*
- * libpng version 1.4.9beta01 - July 8, 2011
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * libpng version 1.5.10beta01 - February 19, 2012
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
* This code is released under the libpng license (See LICENSE, below)
*
* Authors and maintainers:
- * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
- * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- * libpng versions 0.97, January 1998, through 1.4.9beta01 - July 8, 2011: Glenn
- * See also "Contributing Authors", below.
+ * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
+ * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
+ * libpng versions 0.97, January 1998, through 1.5.10beta01 - February 19, 2012: Glenn
+ * See also "Contributing Authors", below.
*
* Note about libpng version numbers:
*
- * Due to various miscommunications, unforeseen code incompatibilities
- * and occasional factors outside the authors' control, version numbering
- * on the library has not always been consistent and straightforward.
- * The following table summarizes matters since version 0.89c, which was
- * the first widely used release:
+ * Due to various miscommunications, unforeseen code incompatibilities
+ * and occasional factors outside the authors' control, version numbering
+ * on the library has not always been consistent and straightforward.
+ * The following table summarizes matters since version 0.89c, which was
+ * the first widely used release:
*
* source png.h png.h shared-lib
* version string int version
@@ -137,52 +137,63 @@
* 1.4.1beta01-03 14 10401 14.so.14.1[.0]
* 1.4.1rc01 14 10401 14.so.14.1[.0]
* 1.4.1beta04-12 14 10401 14.so.14.1[.0]
- * 1.4.1rc02-04 14 10401 14.so.14.1[.0]
* 1.4.1 14 10401 14.so.14.1[.0]
- * 1.4.2beta01 14 10402 14.so.14.2[.0]
- * 1.4.2rc02-06 14 10402 14.so.14.2[.0]
* 1.4.2 14 10402 14.so.14.2[.0]
- * 1.4.3beta01-05 14 10403 14.so.14.3[.0]
- * 1.4.3rc01-03 14 10403 14.so.14.3[.0]
* 1.4.3 14 10403 14.so.14.3[.0]
- * 1.4.4beta01-08 14 10404 14.so.14.4[.0]
- * 1.4.4rc01-05 14 10404 14.so.14.4[.0]
* 1.4.4 14 10404 14.so.14.4[.0]
- * 1.4.5beta01-04 14 10405 14.so.14.5[.0]
- * 1.4.5rc01 14 10405 14.so.14.5[.0]
- * 1.4.5beta05-07 14 10405 14.so.14.5[.0]
- * 1.4.5rc02-03 14 10405 14.so.14.5[.0]
- * 1.4.5 14 10405 14.so.14.5[.0]
- * 1.4.6beta01-07 14 10406 14.so.14.6[.0]
- * 1.4.6rc01 14 10406 14.so.14.6[.0]
- * 1.4.6 14 10406 14.so.14.6[.0]
- * 1.4.7rc01 14 10407 14.so.14.7[.0]
- * 1.4.7 14 10407 14.so.14.7[.0]
- * 1.4.8beta01-05 14 10408 14.so.14.8[.0]
- * 1.4.8rc01 14 10408 14.so.14.8[.0]
- * 1.4.8 14 10408 14.so.14.8[.0]
- * 1.4.9beta01 14 10409 14.so.14.9[.0]
+ * 1.5.0beta01-58 15 10500 15.so.15.0[.0]
+ * 1.5.0rc01-07 15 10500 15.so.15.0[.0]
+ * 1.5.0 15 10500 15.so.15.0[.0]
+ * 1.5.1beta01-11 15 10501 15.so.15.1[.0]
+ * 1.5.1rc01-02 15 10501 15.so.15.1[.0]
+ * 1.5.1 15 10501 15.so.15.1[.0]
+ * 1.5.2beta01-03 15 10502 15.so.15.2[.0]
+ * 1.5.2rc01-03 15 10502 15.so.15.2[.0]
+ * 1.5.2 15 10502 15.so.15.2[.0]
+ * 1.5.3beta01-10 15 10503 15.so.15.3[.0]
+ * 1.5.3rc01-02 15 10503 15.so.15.3[.0]
+ * 1.5.3beta11 15 10503 15.so.15.3[.0]
+ * 1.5.3 [omitted]
+ * 1.5.4beta01-08 15 10504 15.so.15.4[.0]
+ * 1.5.4rc01 15 10504 15.so.15.4[.0]
+ * 1.5.4 15 10504 15.so.15.4[.0]
+ * 1.5.5beta01-08 15 10505 15.so.15.5[.0]
+ * 1.5.5rc01 15 10505 15.so.15.5[.0]
+ * 1.5.5 15 10505 15.so.15.5[.0]
+ * 1.5.6beta01-07 15 10506 15.so.15.6[.0]
+ * 1.5.6rc01-03 15 10506 15.so.15.6[.0]
+ * 1.5.6 15 10506 15.so.15.6[.0]
+ * 1.5.7beta01-05 15 10507 15.so.15.7[.0]
+ * 1.5.7rc01-03 15 10507 15.so.15.7[.0]
+ * 1.5.7 15 10507 15.so.15.7[.0]
+ * 1.5.8beta01 15 10508 15.so.15.8[.0]
+ * 1.5.8rc01 15 10508 15.so.15.8[.0]
+ * 1.5.8 15 10508 15.so.15.8[.0]
+ * 1.5.9beta01-02 15 10509 15.so.15.9[.0]
+ * 1.5.9rc01 15 10509 15.so.15.9[.0]
+ * 1.5.9 15 10509 15.so.15.9[.0]
+ * 1.5.10beta01 15 10510 15.so.15.10[.0]
*
- * Henceforth the source version will match the shared-library major
- * and minor numbers; the shared-library major version number will be
- * used for changes in backward compatibility, as it is intended. The
- * PNG_LIBPNG_VER macro, which is not used within libpng but is available
- * for applications, is an unsigned integer of the form xyyzz corresponding
- * to the source version x.y.z (leading zeros in y and z). Beta versions
- * were given the previous public release number plus a letter, until
- * version 1.0.6j; from then on they were given the upcoming public
- * release number plus "betaNN" or "rcN".
+ * Henceforth the source version will match the shared-library major
+ * and minor numbers; the shared-library major version number will be
+ * used for changes in backward compatibility, as it is intended. The
+ * PNG_LIBPNG_VER macro, which is not used within libpng but is available
+ * for applications, is an unsigned integer of the form xyyzz corresponding
+ * to the source version x.y.z (leading zeros in y and z). Beta versions
+ * were given the previous public release number plus a letter, until
+ * version 1.0.6j; from then on they were given the upcoming public
+ * release number plus "betaNN" or "rcNN".
*
- * Binary incompatibility exists only when applications make direct access
- * to the info_ptr or png_ptr members through png.h, and the compiled
- * application is loaded with a different version of the library.
+ * Binary incompatibility exists only when applications make direct access
+ * to the info_ptr or png_ptr members through png.h, and the compiled
+ * application is loaded with a different version of the library.
*
- * DLLNUM will change each time there are forward or backward changes
- * in binary compatibility (e.g., when a new feature is added).
+ * DLLNUM will change each time there are forward or backward changes
+ * in binary compatibility (e.g., when a new feature is added).
*
- * See libpng.txt or libpng.3 for more information. The PNG specification
- * is available as a W3C Recommendation and as an ISO Specification,
- * <http://www.w3.org/TR/2003/REC-PNG-20031110/
+ * See libpng-manual.txt or libpng.3 for more information. The PNG
+ * specification is available as a W3C Recommendation and as an ISO
+ * Specification, <http://www.w3.org/TR/2003/REC-PNG-20031110/
*/
/*
@@ -193,8 +204,8 @@
*
* This code is released under the libpng license.
*
- * libpng versions 1.2.6, August 15, 2004, through 1.4.9beta01, July 8, 2011, are
- * Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.10beta01, February 19, 2012, are
+ * Copyright (c) 2004, 2006-2012 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individual added to the list of Contributing Authors:
*
@@ -263,13 +274,13 @@
* source code, or portions hereof, for any purpose, without fee, subject
* to the following restrictions:
*
- * 1. The origin of this source code must not be misrepresented.
+ * 1. The origin of this source code must not be misrepresented.
*
- * 2. Altered versions must be plainly marked as such and
- * must not be misrepresented as being the original source.
+ * 2. Altered versions must be plainly marked as such and must not
+ * be misrepresented as being the original source.
*
- * 3. This Copyright notice may not be removed or altered from
- * any source or altered source distribution.
+ * 3. This Copyright notice may not be removed or altered from
+ * any source or altered source distribution.
*
* The Contributing Authors and Group 42, Inc. specifically permit, without
* fee, and encourage the use of this source code as a component to
@@ -282,7 +293,7 @@
* A "png_get_copyright" function is available, for convenient use in "about"
* boxes and the like:
*
- * printf("%s",png_get_copyright(NULL));
+ * printf("%s", png_get_copyright(NULL));
*
* Also, the PNG logo (in PNG format, of course) is supplied in the
* files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
@@ -305,25 +316,24 @@
* Y2K compliance in libpng:
* =========================
*
- * July 8, 2011
+ * February 19, 2012
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
*
* This is your unofficial assurance that libpng from version 0.71 and
- * upward through 1.4.9beta01 are Y2K compliant. It is my belief that earlier
- * versions were also Y2K compliant.
+ * upward through 1.5.10beta01 are Y2K compliant. It is my belief that
+ * earlier versions were also Y2K compliant.
*
- * Libpng only has three year fields. One is a 2-byte unsigned integer
- * that will hold years up to 65535. The other two hold the date in text
+ * Libpng only has two year fields. One is a 2-byte unsigned integer
+ * that will hold years up to 65535. The other holds the date in text
* format, and will hold years up to 9999.
*
* The integer is
* "png_uint_16 year" in png_time_struct.
*
- * The strings are
- * "png_charp time_buffer" in png_struct and
- * "near_time_buffer", which is a local character string in png.c.
+ * The string is
+ * "png_char time_buffer" in png_struct
*
* There are seven time-related functions:
* png.c: png_convert_to_rfc_1123() in png.c
@@ -360,24 +370,28 @@
#ifndef PNG_H
#define PNG_H
-/* This is not the place to learn how to use libpng. The file libpng.txt
+/* This is not the place to learn how to use libpng. The file libpng-manual.txt
* describes how to use libpng, and the file example.c summarizes it
* with some code on which to build. This file is useful for looking
* at the actual function definitions and structure components.
+ *
+ * If you just need to read a PNG file and don't want to read the documentation
+ * skip to the end of this file and read the section entitled 'simplified API'.
*/
/* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.4.9beta01"
+#define PNG_LIBPNG_VER_STRING "1.5.10beta01"
#define PNG_HEADER_VERSION_STRING \
- " libpng version 1.4.9beta01 - July 8, 2011\n"
+ " libpng version 1.5.10beta01 - February 19, 2012\n"
-#define PNG_LIBPNG_VER_SONUM 14
-#define PNG_LIBPNG_VER_DLLNUM 14
+#define PNG_LIBPNG_VER_SONUM 15
+#define PNG_LIBPNG_VER_DLLNUM 15
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
-#define PNG_LIBPNG_VER_MINOR 4
-#define PNG_LIBPNG_VER_RELEASE 9
+#define PNG_LIBPNG_VER_MINOR 5
+#define PNG_LIBPNG_VER_RELEASE 10
+
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero:
*/
@@ -407,15 +421,40 @@
* version 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release
*/
-#define PNG_LIBPNG_VER 10409 /* 1.4.9 */
+#define PNG_LIBPNG_VER 10510 /* 1.5.10 */
-#ifndef PNG_VERSION_INFO_ONLY
-/* Include the compression library's header */
-#include "zlib.h"
+/* Library configuration: these options cannot be changed after
+ * the library has been built.
+ */
+#ifndef PNGLCONF_H
+ /* If pnglibconf.h is missing, you can
+ * copy scripts/pnglibconf.h.prebuilt to pnglibconf.h
+ */
+# include "pnglibconf.h"
#endif
-/* Include all user configurable info, including optional assembler routines */
-#include "pngconf.h"
+#ifndef PNG_VERSION_INFO_ONLY
+# ifndef PNG_BUILDING_SYMBOL_TABLE
+ /*
+ * Standard header files (not needed for the version info or while
+ * building symbol table -- see scripts/pnglibconf.dfa)
+ */
+# ifdef PNG_SETJMP_SUPPORTED
+# include <setjmp.h>
+# endif
+
+ /* Need the time information for converting tIME chunks, it
+ * defines struct tm:
+ */
+# ifdef PNG_CONVERT_tIME_SUPPORTED
+ /* "time.h" functions are not supported on all operating systems */
+# include <time.h>
+# endif
+# endif
+
+/* Machine specific configuration. */
+# include "pngconf.h"
+#endif
/*
* Added at libpng-1.2.8
@@ -431,13 +470,13 @@
* StringFileInfo block must contain a SpecialBuild string.
*/
-#ifdef PNG_USER_PRIVATEBUILD
+#ifdef PNG_USER_PRIVATEBUILD /* From pnglibconf.h */
# define PNG_LIBPNG_BUILD_TYPE \
- (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_PRIVATE)
+ (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_PRIVATE)
#else
# ifdef PNG_LIBPNG_SPECIALBUILD
# define PNG_LIBPNG_BUILD_TYPE \
- (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_SPECIAL)
+ (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_SPECIAL)
# else
# define PNG_LIBPNG_BUILD_TYPE (PNG_LIBPNG_BUILD_BASE_TYPE)
# endif
@@ -450,20 +489,61 @@
extern "C" {
#endif /* __cplusplus */
-/* This file is arranged in several sections. The first section contains
- * structure and type definitions. The second section contains the external
- * library functions, while the third has the internal library functions,
- * which applications aren't expected to use directly.
- */
-
-/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */
-#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
/* Version information for C files, stored in png.c. This had better match
* the version above.
*/
#define png_libpng_ver png_get_header_ver(NULL)
-#endif /* PNG_NO_EXTERN */
+/* This file is arranged in several sections:
+ *
+ * 1. Any configuration options that can be specified by for the application
+ * code when it is built. (Build time configuration is in pnglibconf.h)
+ * 2. Type definitions (base types are defined in pngconf.h), structure
+ * definitions.
+ * 3. Exported library functions.
+ *
+ * The library source code has additional files (principally pngpriv.h) that
+ * allow configuration of the library.
+ */
+/* Section 1: run time configuration
+ * See pnglibconf.h for build time configuration
+ *
+ * Run time configuration allows the application to choose between
+ * implementations of certain arithmetic APIs. The default is set
+ * at build time and recorded in pnglibconf.h, but it is safe to
+ * override these (and only these) settings. Note that this won't
+ * change what the library does, only application code, and the
+ * settings can (and probably should) be made on a per-file basis
+ * by setting the #defines before including png.h
+ *
+ * Use macros to read integers from PNG data or use the exported
+ * functions?
+ * PNG_USE_READ_MACROS: use the macros (see below) Note that
+ * the macros evaluate their argument multiple times.
+ * PNG_NO_USE_READ_MACROS: call the relevant library function.
+ *
+ * Use the alternative algorithm for compositing alpha samples that
+ * does not use division?
+ * PNG_READ_COMPOSITE_NODIV_SUPPORTED: use the 'no division'
+ * algorithm.
+ * PNG_NO_READ_COMPOSITE_NODIV: use the 'division' algorithm.
+ *
+ * How to handle benign errors if PNG_ALLOW_BENIGN_ERRORS is
+ * false?
+ * PNG_ALLOW_BENIGN_ERRORS: map calls to the benign error
+ * APIs to png_warning.
+ * Otherwise the calls are mapped to png_error.
+ */
+
+/* Section 2: type definitions, including structures and compile time
+ * constants.
+ * See pngconf.h for base types that vary by machine/system
+ */
+
+/* This triggers a compiler error in png.c, if png.c and png.h
+ * do not agree upon the version number.
+ */
+typedef char* png_libpng_version_1_5_10beta01;
/* Three color definitions. The order of the red, green, and blue, (and the
* exact size) is not important, although the size of the fields need to
@@ -476,6 +556,7 @@
png_byte blue;
} png_color;
typedef png_color FAR * png_colorp;
+typedef PNG_CONST png_color FAR * png_const_colorp;
typedef png_color FAR * FAR * png_colorpp;
typedef struct png_color_16_struct
@@ -487,6 +568,7 @@
png_uint_16 gray; /* for use in grayscale files */
} png_color_16;
typedef png_color_16 FAR * png_color_16p;
+typedef PNG_CONST png_color_16 FAR * png_const_color_16p;
typedef png_color_16 FAR * FAR * png_color_16pp;
typedef struct png_color_8_struct
@@ -498,6 +580,7 @@
png_byte alpha; /* for alpha channel files */
} png_color_8;
typedef png_color_8 FAR * png_color_8p;
+typedef PNG_CONST png_color_8 FAR * png_const_color_8p;
typedef png_color_8 FAR * FAR * png_color_8pp;
/*
@@ -513,6 +596,7 @@
png_uint_16 frequency;
} png_sPLT_entry;
typedef png_sPLT_entry FAR * png_sPLT_entryp;
+typedef PNG_CONST png_sPLT_entry FAR * png_const_sPLT_entryp;
typedef png_sPLT_entry FAR * FAR * png_sPLT_entrypp;
/* When the depth of the sPLT palette is 8 bits, the color and alpha samples
@@ -528,16 +612,26 @@
png_int_32 nentries; /* number of palette entries */
} png_sPLT_t;
typedef png_sPLT_t FAR * png_sPLT_tp;
+typedef PNG_CONST png_sPLT_t FAR * png_const_sPLT_tp;
typedef png_sPLT_t FAR * FAR * png_sPLT_tpp;
#ifdef PNG_TEXT_SUPPORTED
/* png_text holds the contents of a text/ztxt/itxt chunk in a PNG file,
* and whether that contents is compressed or not. The "key" field
- * points to a regular zero-terminated C string. The "text", "lang", and
- * "lang_key" fields can be regular C strings, empty strings, or NULL pointers.
- * However, the * structure returned by png_get_text() will always contain
- * regular zero-terminated C strings (possibly empty), never NULL pointers,
- * so they can be safely used in printf() and other string-handling functions.
+ * points to a regular zero-terminated C string. The "text" fields can be a
+ * regular C string, an empty string, or a NULL pointer.
+ * However, the structure returned by png_get_text() will always contain
+ * the "text" field as a regular zero-terminated C string (possibly
+ * empty), never a NULL pointer, so it can be safely used in printf() and
+ * other string-handling functions. Note that the "itxt_length", "lang", and
+ * "lang_key" members of the structure only exist when the library is built
+ * with iTXt chunk support. Prior to libpng-1.4.0 the library was built by
+ * default without iTXt support. Also note that when iTXt *is* supported,
+ * the "lang" and "lang_key" fields contain NULL pointers when the
+ * "compression" field contains * PNG_TEXT_COMPRESSION_NONE or
+ * PNG_TEXT_COMPRESSION_zTXt. Note that the "compression value" is not the
+ * same as what appears in the PNG tEXt/zTXt/iTXt chunk's "compression flag"
+ * which is always 0 or 1, or its "compression method" which is always 0.
*/
typedef struct png_text_struct
{
@@ -550,15 +644,14 @@
png_charp text; /* comment, may be an empty string (ie "")
or a NULL pointer */
png_size_t text_length; /* length of the text string */
-#ifdef PNG_iTXt_SUPPORTED
png_size_t itxt_length; /* length of the itxt string */
png_charp lang; /* language code, 0-79 characters
or a NULL pointer */
png_charp lang_key; /* keyword translated UTF-8 string, 0 or more
chars or a NULL pointer */
-#endif
} png_text;
typedef png_text FAR * png_textp;
+typedef PNG_CONST png_text FAR * png_const_textp;
typedef png_text FAR * FAR * png_textpp;
#endif
@@ -588,10 +681,11 @@
png_byte second; /* second of minute, 0 - 60 (for leap seconds) */
} png_time;
typedef png_time FAR * png_timep;
+typedef PNG_CONST png_time FAR * png_const_timep;
typedef png_time FAR * FAR * png_timepp;
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
- defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+ defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
/* png_unknown_chunk is a structure to hold queued chunks for which there is
* no specific support. The idea is that we can use this to queue
* up private chunks for output even though the library doesn't actually
@@ -606,313 +700,25 @@
/* libpng-using applications should NOT directly modify this byte. */
png_byte location; /* mode of operation at read time */
}
+
+
png_unknown_chunk;
typedef png_unknown_chunk FAR * png_unknown_chunkp;
+typedef PNG_CONST png_unknown_chunk FAR * png_const_unknown_chunkp;
typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp;
#endif
-/* png_info is a structure that holds the information in a PNG file so
- * that the application can find out the characteristics of the image.
- * If you are reading the file, this structure will tell you what is
- * in the PNG file. If you are writing the file, fill in the information
- * you want to put into the PNG file, then call png_write_info().
- * The names chosen should be very close to the PNG specification, so
- * consult that document for information about the meaning of each field.
- *
- * With libpng < 0.95, it was only possible to directly set and read the
- * the values in the png_info_struct, which meant that the contents and
- * order of the values had to remain fixed. With libpng 0.95 and later,
- * however, there are now functions that abstract the contents of
- * png_info_struct from the application, so this makes it easier to use
- * libpng with dynamic libraries, and even makes it possible to use
- * libraries that don't have all of the libpng ancillary chunk-handing
- * functionality.
- *
- * In any case, the order of the parameters in png_info_struct should NOT
- * be changed for as long as possible to keep compatibility with applications
- * that use the old direct-access method with png_info_struct.
- *
- * The following members may have allocated storage attached that should be
- * cleaned up before the structure is discarded: palette, trans, text,
- * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
- * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these
- * are automatically freed when the info structure is deallocated, if they were
- * allocated internally by libpng. This behavior can be changed by means
- * of the png_data_freer() function.
- *
- * More allocation details: all the chunk-reading functions that
- * change these members go through the corresponding png_set_*
- * functions. A function to clear these members is available: see
- * png_free_data(). The png_set_* functions do not depend on being
- * able to point info structure members to any of the storage they are
- * passed (they make their own copies), EXCEPT that the png_set_text
- * functions use the same storage passed to them in the text_ptr or
- * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
- * functions do not make their own copies.
+/* Values for the unknown chunk location byte */
+
+#define PNG_HAVE_IHDR 0x01
+#define PNG_HAVE_PLTE 0x02
+#define PNG_AFTER_IDAT 0x08
+
+/* The complete definition of png_info has, as of libpng-1.5.0,
+ * been moved into a separate header file that is not accessible to
+ * applications. Read libpng-manual.txt or libpng.3 for more info.
*/
-typedef struct png_info_struct
-{
- /* the following are necessary for every PNG file */
- png_uint_32 width PNG_DEPSTRUCT; /* width of image in pixels (from IHDR) */
- png_uint_32 height PNG_DEPSTRUCT; /* height of image in pixels (from IHDR) */
- png_uint_32 valid PNG_DEPSTRUCT; /* valid chunk data (see PNG_INFO_
- below) */
- png_size_t rowbytes PNG_DEPSTRUCT; /* bytes needed to hold an untransformed
- row */
- png_colorp palette PNG_DEPSTRUCT; /* array of color values
- (valid & PNG_INFO_PLTE) */
- png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in
- "palette" (PLTE) */
- png_uint_16 num_trans PNG_DEPSTRUCT; /* number of transparent palette
- color (tRNS) */
- png_byte bit_depth PNG_DEPSTRUCT; /* 1, 2, 4, 8, or 16 bits/channel
- (from IHDR) */
- png_byte color_type PNG_DEPSTRUCT; /* see PNG_COLOR_TYPE_ below
- (from IHDR) */
- /* The following three should have been named *_method not *_type */
- png_byte compression_type PNG_DEPSTRUCT; /* must be
- PNG_COMPRESSION_TYPE_BASE (IHDR) */
- png_byte filter_type PNG_DEPSTRUCT; /* must be PNG_FILTER_TYPE_BASE
- (from IHDR) */
- png_byte interlace_type PNG_DEPSTRUCT; /* One of PNG_INTERLACE_NONE,
- PNG_INTERLACE_ADAM7 */
-
- /* The following is informational only on read, and not used on writes. */
- png_byte channels PNG_DEPSTRUCT; /* number of data channels per
- pixel (1, 2, 3, 4) */
- png_byte pixel_depth PNG_DEPSTRUCT; /* number of bits per pixel */
- png_byte spare_byte PNG_DEPSTRUCT; /* to align the data, and for
- future use */
- png_byte signature[8] PNG_DEPSTRUCT; /* magic bytes read by libpng
- from start of file */
-
- /* The rest of the data is optional. If you are reading, check the
- * valid field to see if the information in these are valid. If you
- * are writing, set the valid field to those chunks you want written,
- * and initialize the appropriate fields below.
- */
-
-#if defined(PNG_gAMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
- /* The gAMA chunk describes the gamma characteristics of the system
- * on which the image was created, normally in the range [1.0, 2.5].
- * Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
- */
- float gamma PNG_DEPSTRUCT; /* gamma value of image,
- if (valid & PNG_INFO_gAMA) */
-#endif
-
-#ifdef PNG_sRGB_SUPPORTED
- /* GR-P, 0.96a */
- /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
- png_byte srgb_intent PNG_DEPSTRUCT; /* sRGB rendering intent
- [0, 1, 2, or 3] */
-#endif
-
-#ifdef PNG_TEXT_SUPPORTED
- /* The tEXt, and zTXt chunks contain human-readable textual data in
- * uncompressed, compressed, and optionally compressed forms, respectively.
- * The data in "text" is an array of pointers to uncompressed,
- * null-terminated C strings. Each chunk has a keyword that describes the
- * textual data contained in that chunk. Keywords are not required to be
- * unique, and the text string may be empty. Any number of text chunks may
- * be in an image.
- */
- int num_text PNG_DEPSTRUCT; /* number of comments read/to write */
- int max_text PNG_DEPSTRUCT; /* current size of text array */
- png_textp text PNG_DEPSTRUCT; /* array of comments read/to write */
-#endif /* PNG_TEXT_SUPPORTED */
-
-#ifdef PNG_tIME_SUPPORTED
- /* The tIME chunk holds the last time the displayed image data was
- * modified. See the png_time struct for the contents of this struct.
- */
- png_time mod_time PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_sBIT_SUPPORTED
- /* The sBIT chunk specifies the number of significant high-order bits
- * in the pixel data. Values are in the range [1, bit_depth], and are
- * only specified for the channels in the pixel data. The contents of
- * the low-order bits is not specified. Data is valid if
- * (valid & PNG_INFO_sBIT) is non-zero.
- */
- png_color_8 sig_bit PNG_DEPSTRUCT; /* significant bits in color channels */
-#endif
-
-#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \
-defined(PNG_READ_BACKGROUND_SUPPORTED)
- /* The tRNS chunk supplies transparency data for paletted images and
- * other image types that don't need a full alpha channel. There are
- * "num_trans" transparency values for a paletted image, stored in the
- * same order as the palette colors, starting from index 0. Values
- * for the data are in the range [0, 255], ranging from fully transparent
- * to fully opaque, respectively. For non-paletted images, there is a
- * single color specified that should be treated as fully transparent.
- * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
- */
- png_bytep trans_alpha PNG_DEPSTRUCT; /* alpha values for paletted
- image */
- png_color_16 trans_color PNG_DEPSTRUCT; /* transparent color for
- non-palette image */
-#endif
-
-#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- /* The bKGD chunk gives the suggested image background color if the
- * display program does not have its own background color and the image
- * is needs to composited onto a background before display. The colors
- * in "background" are normally in the same color space/depth as the
- * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
- */
- png_color_16 background PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_oFFs_SUPPORTED
- /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
- * and downwards from the top-left corner of the display, page, or other
- * application-specific co-ordinate space. See the PNG_OFFSET_ defines
- * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero.
- */
- png_int_32 x_offset PNG_DEPSTRUCT; /* x offset on page */
- png_int_32 y_offset PNG_DEPSTRUCT; /* y offset on page */
- png_byte offset_unit_type PNG_DEPSTRUCT; /* offset units type */
-#endif
-
-#ifdef PNG_pHYs_SUPPORTED
- /* The pHYs chunk gives the physical pixel density of the image for
- * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
- * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
- */
- png_uint_32 x_pixels_per_unit PNG_DEPSTRUCT; /* horizontal pixel density */
- png_uint_32 y_pixels_per_unit PNG_DEPSTRUCT; /* vertical pixel density */
- png_byte phys_unit_type PNG_DEPSTRUCT; /* resolution type (see
- PNG_RESOLUTION_ below) */
-#endif
-
-#ifdef PNG_hIST_SUPPORTED
- /* The hIST chunk contains the relative frequency or importance of the
- * various palette entries, so that a viewer can intelligently select a
- * reduced-color palette, if required. Data is an array of "num_palette"
- * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
- * is non-zero.
- */
- png_uint_16p hist PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_cHRM_SUPPORTED
- /* The cHRM chunk describes the CIE color characteristics of the monitor
- * on which the PNG was created. This data allows the viewer to do gamut
- * mapping of the input image to ensure that the viewer sees the same
- * colors in the image as the creator. Values are in the range
- * [0.0, 0.8]. Data valid if (valid & PNG_INFO_cHRM) non-zero.
- */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- float x_white PNG_DEPSTRUCT;
- float y_white PNG_DEPSTRUCT;
- float x_red PNG_DEPSTRUCT;
- float y_red PNG_DEPSTRUCT;
- float x_green PNG_DEPSTRUCT;
- float y_green PNG_DEPSTRUCT;
- float x_blue PNG_DEPSTRUCT;
- float y_blue PNG_DEPSTRUCT;
-#endif
-#endif
-
-#ifdef PNG_pCAL_SUPPORTED
- /* The pCAL chunk describes a transformation between the stored pixel
- * values and original physical data values used to create the image.
- * The integer range [0, 2^bit_depth - 1] maps to the floating-point
- * range given by [pcal_X0, pcal_X1], and are further transformed by a
- * (possibly non-linear) transformation function given by "pcal_type"
- * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_
- * defines below, and the PNG-Group's PNG extensions document for a
- * complete description of the transformations and how they should be
- * implemented, and for a description of the ASCII parameter strings.
- * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
- */
- png_charp pcal_purpose PNG_DEPSTRUCT; /* pCAL chunk description string */
- png_int_32 pcal_X0 PNG_DEPSTRUCT; /* minimum value */
- png_int_32 pcal_X1 PNG_DEPSTRUCT; /* maximum value */
- png_charp pcal_units PNG_DEPSTRUCT; /* Latin-1 string giving physical
- units */
- png_charpp pcal_params PNG_DEPSTRUCT; /* ASCII strings containing
- parameter values */
- png_byte pcal_type PNG_DEPSTRUCT; /* equation type
- (see PNG_EQUATION_ below) */
- png_byte pcal_nparams PNG_DEPSTRUCT; /* number of parameters given
- in pcal_params */
-#endif
-
-/* New members added in libpng-1.0.6 */
- png_uint_32 free_me PNG_DEPSTRUCT; /* flags items libpng is
- responsible for freeing */
-
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
- defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
- /* Storage for unknown chunks that the library doesn't recognize. */
- png_unknown_chunkp unknown_chunks PNG_DEPSTRUCT;
- png_size_t unknown_chunks_num PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_iCCP_SUPPORTED
- /* iCCP chunk data. */
- png_charp iccp_name PNG_DEPSTRUCT; /* profile name */
- png_charp iccp_profile PNG_DEPSTRUCT; /* International Color Consortium
- profile data */
- /* Note to maintainer: should be png_bytep */
- png_uint_32 iccp_proflen PNG_DEPSTRUCT; /* ICC profile data length */
- png_byte iccp_compression PNG_DEPSTRUCT; /* Always zero */
-#endif
-
-#ifdef PNG_sPLT_SUPPORTED
- /* Data on sPLT chunks (there may be more than one). */
- png_sPLT_tp splt_palettes PNG_DEPSTRUCT;
- png_uint_32 splt_palettes_num PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_sCAL_SUPPORTED
- /* The sCAL chunk describes the actual physical dimensions of the
- * subject matter of the graphic. The chunk contains a unit specification
- * a byte value, and two ASCII strings representing floating-point
- * values. The values are width and height corresponsing to one pixel
- * in the image. This external representation is converted to double
- * here. Data values are valid if (valid & PNG_INFO_sCAL) is non-zero.
- */
- png_byte scal_unit PNG_DEPSTRUCT; /* unit of physical scale */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- double scal_pixel_width PNG_DEPSTRUCT; /* width of one pixel */
- double scal_pixel_height PNG_DEPSTRUCT; /* height of one pixel */
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
- png_charp scal_s_width PNG_DEPSTRUCT; /* string containing height */
- png_charp scal_s_height PNG_DEPSTRUCT; /* string containing width */
-#endif
-#endif
-
-#ifdef PNG_INFO_IMAGE_SUPPORTED
- /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS)
- non-zero */
- /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
- png_bytepp row_pointers PNG_DEPSTRUCT; /* the image bits */
-#endif
-
-#if defined(PNG_FIXED_POINT_SUPPORTED) && defined(PNG_gAMA_SUPPORTED)
- png_fixed_point int_gamma PNG_DEPSTRUCT; /* gamma of image,
- if (valid & PNG_INFO_gAMA) */
-#endif
-
-#if defined(PNG_cHRM_SUPPORTED) && defined(PNG_FIXED_POINT_SUPPORTED)
- png_fixed_point int_x_white PNG_DEPSTRUCT;
- png_fixed_point int_y_white PNG_DEPSTRUCT;
- png_fixed_point int_x_red PNG_DEPSTRUCT;
- png_fixed_point int_y_red PNG_DEPSTRUCT;
- png_fixed_point int_x_green PNG_DEPSTRUCT;
- png_fixed_point int_y_green PNG_DEPSTRUCT;
- png_fixed_point int_x_blue PNG_DEPSTRUCT;
- png_fixed_point int_y_blue PNG_DEPSTRUCT;
-#endif
-
-} png_info;
-
+typedef struct png_info_def png_info;
typedef png_info FAR * png_infop;
typedef PNG_CONST png_info FAR * png_const_infop;
typedef png_info FAR * FAR * png_infopp;
@@ -922,6 +728,14 @@
#define PNG_UINT_32_MAX ((png_uint_32)(-1))
#define PNG_SIZE_MAX ((png_size_t)(-1))
+/* These are constants for fixed point values encoded in the
+ * PNG specification manner (x100000)
+ */
+#define PNG_FP_1 100000
+#define PNG_FP_HALF 50000
+#define PNG_FP_MAX ((png_fixed_point)0x7fffffffL)
+#define PNG_FP_MIN (-PNG_FP_MAX)
+
/* These describe the color_type field in png_info. */
/* color type masks */
#define PNG_COLOR_MASK_PALETTE 1
@@ -1008,7 +822,7 @@
#define PNG_INFO_iCCP 0x1000 /* ESR, 1.0.6 */
#define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */
#define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */
-#define PNG_INFO_IDAT 0x8000L /* ESR, 1.0.6 */
+#define PNG_INFO_IDAT 0x8000 /* ESR, 1.0.6 */
/* This is used for the transformation routines, as some of them
* change these values for the row. It also should enable using
@@ -1016,62 +830,86 @@
*/
typedef struct png_row_info_struct
{
- png_uint_32 width; /* width of row */
- png_size_t rowbytes; /* number of bytes in row */
- png_byte color_type; /* color type of row */
- png_byte bit_depth; /* bit depth of row */
- png_byte channels; /* number of channels (1, 2, 3, or 4) */
+ png_uint_32 width; /* width of row */
+ png_size_t rowbytes; /* number of bytes in row */
+ png_byte color_type; /* color type of row */
+ png_byte bit_depth; /* bit depth of row */
+ png_byte channels; /* number of channels (1, 2, 3, or 4) */
png_byte pixel_depth; /* bits per pixel (depth * channels) */
} png_row_info;
typedef png_row_info FAR * png_row_infop;
typedef png_row_info FAR * FAR * png_row_infopp;
+/* The complete definition of png_struct has, as of libpng-1.5.0,
+ * been moved into a separate header file that is not accessible to
+ * applications. Read libpng-manual.txt or libpng.3 for more info.
+ */
+typedef struct png_struct_def png_struct;
+typedef PNG_CONST png_struct FAR * png_const_structp;
+typedef png_struct FAR * png_structp;
+
/* These are the function types for the I/O functions and for the functions
* that allow the user to override the default I/O functions with his or her
* own. The png_error_ptr type should match that of user-supplied warning
* and error functions, while the png_rw_ptr type should match that of the
- * user read/write data functions.
+ * user read/write data functions. Note that the 'write' function must not
+ * modify the buffer it is passed. The 'read' function, on the other hand, is
+ * expected to return the read data in the buffer.
*/
-typedef struct png_struct_def png_struct;
-typedef png_struct FAR * png_structp;
-typedef PNG_CONST png_struct FAR * png_const_structp;
-
-typedef void (PNGAPI *png_error_ptr) PNGARG((png_structp, png_const_charp));
-typedef void (PNGAPI *png_rw_ptr) PNGARG((png_structp, png_bytep, png_size_t));
-typedef void (PNGAPI *png_flush_ptr) PNGARG((png_structp));
-typedef void (PNGAPI *png_read_status_ptr) PNGARG((png_structp, png_uint_32,
- int));
-typedef void (PNGAPI *png_write_status_ptr) PNGARG((png_structp, png_uint_32,
- int));
+typedef PNG_CALLBACK(void, *png_error_ptr, (png_structp, png_const_charp));
+typedef PNG_CALLBACK(void, *png_rw_ptr, (png_structp, png_bytep, png_size_t));
+typedef PNG_CALLBACK(void, *png_flush_ptr, (png_structp));
+typedef PNG_CALLBACK(void, *png_read_status_ptr, (png_structp, png_uint_32,
+ int));
+typedef PNG_CALLBACK(void, *png_write_status_ptr, (png_structp, png_uint_32,
+ int));
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-typedef void (PNGAPI *png_progressive_info_ptr) PNGARG((png_structp,
- png_infop));
-typedef void (PNGAPI *png_progressive_end_ptr) PNGARG((png_structp, png_infop));
-typedef void (PNGAPI *png_progressive_row_ptr) PNGARG((png_structp, png_bytep,
- png_uint_32, int));
+typedef PNG_CALLBACK(void, *png_progressive_info_ptr, (png_structp, png_infop));
+typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop));
+
+/* The following callback receives png_uint_32 row_number, int pass for the
+ * png_bytep data of the row. When transforming an interlaced image the
+ * row number is the row number within the sub-image of the interlace pass, so
+ * the value will increase to the height of the sub-image (not the full image)
+ * then reset to 0 for the next pass.
+ *
+ * Use PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
+ * find the output pixel (x,y) given an interlaced sub-image pixel
+ * (row,col,pass). (See below for these macros.)
+ */
+typedef PNG_CALLBACK(void, *png_progressive_row_ptr, (png_structp, png_bytep,
+ png_uint_32, int));
#endif
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-typedef void (PNGAPI *png_user_transform_ptr) PNGARG((png_structp,
- png_row_infop, png_bytep));
+typedef PNG_CALLBACK(void, *png_user_transform_ptr, (png_structp, png_row_infop,
+ png_bytep));
#endif
#ifdef PNG_USER_CHUNKS_SUPPORTED
-typedef int (PNGAPI *png_user_chunk_ptr) PNGARG((png_structp,
- png_unknown_chunkp));
+typedef PNG_CALLBACK(int, *png_user_chunk_ptr, (png_structp,
+ png_unknown_chunkp));
#endif
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
-typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp));
+typedef PNG_CALLBACK(void, *png_unknown_chunk_ptr, (png_structp));
#endif
+
#ifdef PNG_SETJMP_SUPPORTED
-/* This must match the function definition in <setjmp.h>, and the
- * application must include this before png.h to obtain the definition
- * of jmp_buf.
+/* This must match the function definition in <setjmp.h>, and the application
+ * must include this before png.h to obtain the definition of jmp_buf. The
+ * function is required to be PNG_NORETURN, but this is not checked. If the
+ * function does return the application will crash via an abort() or similar
+ * system level call.
+ *
+ * If you get a warning here while building the library you may need to make
+ * changes to ensure that pnglibconf.h records the calling convention used by
+ * your compiler. This may be very difficult - try using a different compiler
+ * to build the library!
*/
-typedef void (PNGAPI *png_longjmp_ptr) PNGARG((jmp_buf, int));
+PNG_FUNCTION(void, (PNGCAPI *png_longjmp_ptr), PNGARG((jmp_buf, int)), typedef);
#endif
/* Transform masks for the high-level interface */
@@ -1093,453 +931,94 @@
#define PNG_TRANSFORM_STRIP_FILLER_AFTER 0x1000 /* write only */
/* Added to libpng-1.4.0 */
#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */
+/* Added to libpng-1.5.4 */
+#define PNG_TRANSFORM_EXPAND_16 0x4000 /* read only */
+#define PNG_TRANSFORM_SCALE_16 0x8000 /* read only */
/* Flags for MNG supported features */
#define PNG_FLAG_MNG_EMPTY_PLTE 0x01
#define PNG_FLAG_MNG_FILTER_64 0x04
#define PNG_ALL_MNG_FEATURES 0x05
-typedef png_voidp (*png_malloc_ptr) PNGARG((png_structp, png_alloc_size_t));
-typedef void (*png_free_ptr) PNGARG((png_structp, png_voidp));
-
-/* The structure that holds the information to read and write PNG files.
- * The only people who need to care about what is inside of this are the
- * people who will be modifying the library for their own special needs.
- * It should NOT be accessed directly by an application, except to store
- * the jmp_buf.
+/* NOTE: prior to 1.5 these functions had no 'API' style declaration,
+ * this allowed the zlib default functions to be used on Windows
+ * platforms. In 1.5 the zlib default malloc (which just calls malloc and
+ * ignores the first argument) should be completely compatible with the
+ * following.
*/
-
-struct png_struct_def
-{
-#ifdef PNG_SETJMP_SUPPORTED
- jmp_buf jmpbuf PNG_DEPSTRUCT; /* used in png_error */
- png_longjmp_ptr longjmp_fn PNG_DEPSTRUCT;/* setjmp non-local goto
- function. */
-#endif
- png_error_ptr error_fn PNG_DEPSTRUCT; /* function for printing
- errors and aborting */
- png_error_ptr warning_fn PNG_DEPSTRUCT; /* function for printing
- warnings */
- png_voidp error_ptr PNG_DEPSTRUCT; /* user supplied struct for
- error functions */
- png_rw_ptr write_data_fn PNG_DEPSTRUCT; /* function for writing
- output data */
- png_rw_ptr read_data_fn PNG_DEPSTRUCT; /* function for reading
- input data */
- png_voidp io_ptr PNG_DEPSTRUCT; /* ptr to application struct
- for I/O functions */
-
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
- png_user_transform_ptr read_user_transform_fn PNG_DEPSTRUCT; /* user read
- transform */
-#endif
-
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
- png_user_transform_ptr write_user_transform_fn PNG_DEPSTRUCT; /* user write
- transform */
-#endif
-
-/* These were added in libpng-1.0.2 */
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
- defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
- png_voidp user_transform_ptr PNG_DEPSTRUCT; /* user supplied struct
- for user transform */
- png_byte user_transform_depth PNG_DEPSTRUCT; /* bit depth of user
- transformed pixels */
- png_byte user_transform_channels PNG_DEPSTRUCT; /* channels in user
- transformed pixels */
-#endif
-#endif
-
- png_uint_32 mode PNG_DEPSTRUCT; /* tells us where we are in
- the PNG file */
- png_uint_32 flags PNG_DEPSTRUCT; /* flags indicating various
- things to libpng */
- png_uint_32 transformations PNG_DEPSTRUCT; /* which transformations
- to perform */
-
- z_stream zstream PNG_DEPSTRUCT; /* pointer to decompression
- structure (below) */
- png_bytep zbuf PNG_DEPSTRUCT; /* buffer for zlib */
- png_size_t zbuf_size PNG_DEPSTRUCT; /* size of zbuf */
- int zlib_level PNG_DEPSTRUCT; /* holds zlib compression level */
- int zlib_method PNG_DEPSTRUCT; /* holds zlib compression method */
- int zlib_window_bits PNG_DEPSTRUCT; /* holds zlib compression window
- bits */
- int zlib_mem_level PNG_DEPSTRUCT; /* holds zlib compression memory
- level */
- int zlib_strategy PNG_DEPSTRUCT; /* holds zlib compression
- strategy */
-
- png_uint_32 width PNG_DEPSTRUCT; /* width of image in pixels */
- png_uint_32 height PNG_DEPSTRUCT; /* height of image in pixels */
- png_uint_32 num_rows PNG_DEPSTRUCT; /* number of rows in current pass */
- png_uint_32 usr_width PNG_DEPSTRUCT; /* width of row at start of write */
- png_size_t rowbytes PNG_DEPSTRUCT; /* size of row in bytes */
-#if 0 /* Replaced with the following in libpng-1.4.1 */
- png_size_t irowbytes PNG_DEPSTRUCT;
-#endif
-/* Added in libpng-1.4.1 */
-#ifdef PNG_USER_LIMITS_SUPPORTED
- /* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk
- * can occupy when decompressed. 0 means unlimited.
- * We will change the typedef from png_size_t to png_alloc_size_t
- * in libpng-1.6.0
- */
- png_alloc_size_t user_chunk_malloc_max PNG_DEPSTRUCT;
-#endif
- png_uint_32 iwidth PNG_DEPSTRUCT; /* width of current interlaced
- row in pixels */
- png_uint_32 row_number PNG_DEPSTRUCT; /* current row in interlace pass */
- png_bytep prev_row PNG_DEPSTRUCT; /* buffer to save previous
- (unfiltered) row */
- png_bytep row_buf PNG_DEPSTRUCT; /* buffer to save current
- (unfiltered) row */
- png_bytep sub_row PNG_DEPSTRUCT; /* buffer to save "sub" row
- when filtering */
- png_bytep up_row PNG_DEPSTRUCT; /* buffer to save "up" row
- when filtering */
- png_bytep avg_row PNG_DEPSTRUCT; /* buffer to save "avg" row
- when filtering */
- png_bytep paeth_row PNG_DEPSTRUCT; /* buffer to save "Paeth" row
- when filtering */
- png_row_info row_info PNG_DEPSTRUCT; /* used for transformation
- routines */
-
- png_uint_32 idat_size PNG_DEPSTRUCT; /* current IDAT size for read */
- png_uint_32 crc PNG_DEPSTRUCT; /* current chunk CRC value */
- png_colorp palette PNG_DEPSTRUCT; /* palette from the input file */
- png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in
- palette */
- png_uint_16 num_trans PNG_DEPSTRUCT; /* number of transparency values */
- png_byte chunk_name[5] PNG_DEPSTRUCT; /* null-terminated name of current
- chunk */
- png_byte compression PNG_DEPSTRUCT; /* file compression type
- (always 0) */
- png_byte filter PNG_DEPSTRUCT; /* file filter type (always 0) */
- png_byte interlaced PNG_DEPSTRUCT; /* PNG_INTERLACE_NONE,
- PNG_INTERLACE_ADAM7 */
- png_byte pass PNG_DEPSTRUCT; /* current interlace pass (0 - 6) */
- png_byte do_filter PNG_DEPSTRUCT; /* row filter flags (see
- PNG_FILTER_ below ) */
- png_byte color_type PNG_DEPSTRUCT; /* color type of file */
- png_byte bit_depth PNG_DEPSTRUCT; /* bit depth of file */
- png_byte usr_bit_depth PNG_DEPSTRUCT; /* bit depth of users row */
- png_byte pixel_depth PNG_DEPSTRUCT; /* number of bits per pixel */
- png_byte channels PNG_DEPSTRUCT; /* number of channels in file */
- png_byte usr_channels PNG_DEPSTRUCT; /* channels at start of write */
- png_byte sig_bytes PNG_DEPSTRUCT; /* magic bytes read/written from
- start of file */
-
-#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
- png_uint_16 filler PNG_DEPSTRUCT; /* filler bytes for pixel
- expansion */
-#endif
-
-#ifdef PNG_bKGD_SUPPORTED
- png_byte background_gamma_type PNG_DEPSTRUCT;
-# ifdef PNG_FLOATING_POINT_SUPPORTED
- float background_gamma PNG_DEPSTRUCT;
-# endif
- png_color_16 background PNG_DEPSTRUCT; /* background color in
- screen gamma space */
-#ifdef PNG_READ_GAMMA_SUPPORTED
- png_color_16 background_1 PNG_DEPSTRUCT; /* background normalized
- to gamma 1.0 */
-#endif
-#endif /* PNG_bKGD_SUPPORTED */
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
- png_flush_ptr output_flush_fn PNG_DEPSTRUCT; /* Function for flushing
- output */
- png_uint_32 flush_dist PNG_DEPSTRUCT; /* how many rows apart to flush,
- 0 - no flush */
- png_uint_32 flush_rows PNG_DEPSTRUCT; /* number of rows written since
- last flush */
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- int gamma_shift PNG_DEPSTRUCT; /* number of "insignificant" bits
- 16-bit gamma */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- float gamma PNG_DEPSTRUCT; /* file gamma value */
- float screen_gamma PNG_DEPSTRUCT; /* screen gamma value
- (display_exponent) */
-#endif
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- png_bytep gamma_table PNG_DEPSTRUCT; /* gamma table for 8-bit
- depth files */
- png_bytep gamma_from_1 PNG_DEPSTRUCT; /* converts from 1.0 to screen */
- png_bytep gamma_to_1 PNG_DEPSTRUCT; /* converts from file to 1.0 */
- png_uint_16pp gamma_16_table PNG_DEPSTRUCT; /* gamma table for 16-bit
- depth files */
- png_uint_16pp gamma_16_from_1 PNG_DEPSTRUCT; /* converts from 1.0 to
- screen */
- png_uint_16pp gamma_16_to_1 PNG_DEPSTRUCT; /* converts from file to 1.0 */
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
- png_color_8 sig_bit PNG_DEPSTRUCT; /* significant bits in each
- available channel */
-#endif
-
-#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
- png_color_8 shift PNG_DEPSTRUCT; /* shift for significant bit
- tranformation */
-#endif
-
-#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
- || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- png_bytep trans_alpha PNG_DEPSTRUCT; /* alpha values for
- paletted files */
- png_color_16 trans_color PNG_DEPSTRUCT; /* transparent color for
- non-paletted files */
-#endif
-
- png_read_status_ptr read_row_fn PNG_DEPSTRUCT; /* called after each
- row is decoded */
- png_write_status_ptr write_row_fn PNG_DEPSTRUCT; /* called after each
- row is encoded */
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
- png_progressive_info_ptr info_fn PNG_DEPSTRUCT; /* called after header
- data fully read */
- png_progressive_row_ptr row_fn PNG_DEPSTRUCT; /* called after each
- prog. row is decoded */
- png_progressive_end_ptr end_fn PNG_DEPSTRUCT; /* called after image
- is complete */
- png_bytep save_buffer_ptr PNG_DEPSTRUCT; /* current location in
- save_buffer */
- png_bytep save_buffer PNG_DEPSTRUCT; /* buffer for previously
- read data */
- png_bytep current_buffer_ptr PNG_DEPSTRUCT; /* current location in
- current_buffer */
- png_bytep current_buffer PNG_DEPSTRUCT; /* buffer for recently
- used data */
- png_uint_32 push_length PNG_DEPSTRUCT; /* size of current input
- chunk */
- png_uint_32 skip_length PNG_DEPSTRUCT; /* bytes to skip in
- input data */
- png_size_t save_buffer_size PNG_DEPSTRUCT; /* amount of data now
- in save_buffer */
- png_size_t save_buffer_max PNG_DEPSTRUCT; /* total size of
- save_buffer */
- png_size_t buffer_size PNG_DEPSTRUCT; /* total amount of
- available input data */
- png_size_t current_buffer_size PNG_DEPSTRUCT; /* amount of data now
- in current_buffer */
- int process_mode PNG_DEPSTRUCT; /* what push library
- is currently doing */
- int cur_palette PNG_DEPSTRUCT; /* current push library
- palette index */
-
-# ifdef PNG_TEXT_SUPPORTED
- png_size_t current_text_size PNG_DEPSTRUCT; /* current size of
- text input data */
- png_size_t current_text_left PNG_DEPSTRUCT; /* how much text left
- to read in input */
- png_charp current_text PNG_DEPSTRUCT; /* current text chunk
- buffer */
- png_charp current_text_ptr PNG_DEPSTRUCT; /* current location
- in current_text */
-# endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
-
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-
-#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
-/* For the Borland special 64K segment handler */
- png_bytepp offset_table_ptr PNG_DEPSTRUCT;
- png_bytep offset_table PNG_DEPSTRUCT;
- png_uint_16 offset_table_number PNG_DEPSTRUCT;
- png_uint_16 offset_table_count PNG_DEPSTRUCT;
- png_uint_16 offset_table_count_free PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
- png_bytep palette_lookup PNG_DEPSTRUCT; /* lookup table for quantizing */
- png_bytep quantize_index PNG_DEPSTRUCT; /* index translation for palette
- files */
-#endif
-
-#if defined(PNG_READ_QUANTIZE_SUPPORTED) || defined(PNG_hIST_SUPPORTED)
- png_uint_16p hist PNG_DEPSTRUCT; /* histogram */
-#endif
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- png_byte heuristic_method PNG_DEPSTRUCT; /* heuristic for row
- filter selection */
- png_byte num_prev_filters PNG_DEPSTRUCT; /* number of weights
- for previous rows */
- png_bytep prev_filters PNG_DEPSTRUCT; /* filter type(s) of
- previous row(s) */
- png_uint_16p filter_weights PNG_DEPSTRUCT; /* weight(s) for previous
- line(s) */
- png_uint_16p inv_filter_weights PNG_DEPSTRUCT; /* 1/weight(s) for
- previous line(s) */
- png_uint_16p filter_costs PNG_DEPSTRUCT; /* relative filter
- calculation cost */
- png_uint_16p inv_filter_costs PNG_DEPSTRUCT; /* 1/relative filter
- calculation cost */
-#endif
-
-#ifdef PNG_TIME_RFC1123_SUPPORTED
- png_charp time_buffer PNG_DEPSTRUCT; /* String to hold RFC 1123 time text */
-#endif
-
-/* New members added in libpng-1.0.6 */
-
- png_uint_32 free_me PNG_DEPSTRUCT; /* flags items libpng is
- responsible for freeing */
-
-#ifdef PNG_USER_CHUNKS_SUPPORTED
- png_voidp user_chunk_ptr PNG_DEPSTRUCT;
- png_user_chunk_ptr read_user_chunk_fn PNG_DEPSTRUCT; /* user read
- chunk handler */
-#endif
-
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- int num_chunk_list PNG_DEPSTRUCT;
- png_bytep chunk_list PNG_DEPSTRUCT;
-#endif
-
-/* New members added in libpng-1.0.3 */
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
- png_byte rgb_to_gray_status PNG_DEPSTRUCT;
- /* These were changed from png_byte in libpng-1.0.6 */
- png_uint_16 rgb_to_gray_red_coeff PNG_DEPSTRUCT;
- png_uint_16 rgb_to_gray_green_coeff PNG_DEPSTRUCT;
- png_uint_16 rgb_to_gray_blue_coeff PNG_DEPSTRUCT;
-#endif
-
-/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
-#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
- defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
- defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
-/* Changed from png_byte to png_uint_32 at version 1.2.0 */
- png_uint_32 mng_features_permitted PNG_DEPSTRUCT;
-#endif
-
-/* New member added in libpng-1.0.7 */
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- png_fixed_point int_gamma PNG_DEPSTRUCT;
-#endif
-
-/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- png_byte filter_type PNG_DEPSTRUCT;
-#endif
-
-/* New members added in libpng-1.2.0 */
-
-/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
-#ifdef PNG_USER_MEM_SUPPORTED
- png_voidp mem_ptr PNG_DEPSTRUCT; /* user supplied struct for
- mem functions */
- png_malloc_ptr malloc_fn PNG_DEPSTRUCT; /* function for
- allocating memory */
- png_free_ptr free_fn PNG_DEPSTRUCT; /* function for
- freeing memory */
-#endif
-
-/* New member added in libpng-1.0.13 and 1.2.0 */
- png_bytep big_row_buf PNG_DEPSTRUCT; /* buffer to save current
- (unfiltered) row */
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-/* The following three members were added at version 1.0.14 and 1.2.4 */
- png_bytep quantize_sort PNG_DEPSTRUCT; /* working sort array */
- png_bytep index_to_palette PNG_DEPSTRUCT; /* where the original
- index currently is
- in the palette */
- png_bytep palette_to_index PNG_DEPSTRUCT; /* which original index
- points to this
- palette color */
-#endif
-
-/* New members added in libpng-1.0.16 and 1.2.6 */
- png_byte compression_type PNG_DEPSTRUCT;
-
-#ifdef PNG_USER_LIMITS_SUPPORTED
- png_uint_32 user_width_max PNG_DEPSTRUCT;
- png_uint_32 user_height_max PNG_DEPSTRUCT;
- /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
- * chunks that can be stored (0 means unlimited).
- */
- png_uint_32 user_chunk_cache_max PNG_DEPSTRUCT;
-#endif
-
-/* New member added in libpng-1.0.25 and 1.2.17 */
-#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
- /* Storage for unknown chunk that the library doesn't recognize. */
- png_unknown_chunk unknown_chunk PNG_DEPSTRUCT;
-#endif
-
-/* New members added in libpng-1.2.26 */
- png_uint_32 old_big_row_buf_size PNG_DEPSTRUCT;
- png_uint_32 old_prev_row_size PNG_DEPSTRUCT;
-
-/* New member added in libpng-1.2.30 */
- png_charp chunkdata PNG_DEPSTRUCT; /* buffer for reading chunk data */
-
-#ifdef PNG_IO_STATE_SUPPORTED
-/* New member added in libpng-1.4.0 */
- png_uint_32 io_state PNG_DEPSTRUCT;
-#endif
-};
-
-
-/* This triggers a compiler error in png.c, if png.c and png.h
- * do not agree upon the version number.
- */
-typedef png_structp version_1_4_9beta01;
+typedef PNG_CALLBACK(png_voidp, *png_malloc_ptr, (png_structp,
+ png_alloc_size_t));
+typedef PNG_CALLBACK(void, *png_free_ptr, (png_structp, png_voidp));
typedef png_struct FAR * FAR * png_structpp;
-/* Here are the function definitions most commonly used. This is not
- * the place to find out how to use libpng. See libpng.txt for the
+/* Section 3: exported functions
+ * Here are the function definitions most commonly used. This is not
+ * the place to find out how to use libpng. See libpng-manual.txt for the
* full explanation, see example.c for the summary. This just provides
* a simple one line description of the use of each function.
+ *
+ * The PNG_EXPORT() and PNG_EXPORTA() macros used below are defined in
+ * pngconf.h and in the *.dfn files in the scripts directory.
+ *
+ * PNG_EXPORT(ordinal, type, name, (args));
+ *
+ * ordinal: ordinal that is used while building
+ * *.def files. The ordinal value is only
+ * relevant when preprocessing png.h with
+ * the *.dfn files for building symbol table
+ * entries, and are removed by pngconf.h.
+ * type: return type of the function
+ * name: function name
+ * args: function arguments, with types
+ *
+ * When we wish to append attributes to a function prototype we use
+ * the PNG_EXPORTA() macro instead.
+ *
+ * PNG_EXPORTA(ordinal, type, name, (args), attributes);
+ *
+ * ordinal, type, name, and args: same as in PNG_EXPORT().
+ * attributes: function attributes
*/
/* Returns the version number of the library */
-PNG_EXPORT(png_uint_32,png_access_version_number) PNGARG((void));
+PNG_EXPORT(1, png_uint_32, png_access_version_number, (void));
/* Tell lib we have already handled the first <num_bytes> magic bytes.
* Handling more than 8 bytes from the beginning of the file is an error.
*/
-PNG_EXPORT(void,png_set_sig_bytes) PNGARG((png_structp png_ptr,
- int num_bytes));
+PNG_EXPORT(2, void, png_set_sig_bytes, (png_structp png_ptr, int num_bytes));
/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a
* PNG file. Returns zero if the supplied bytes match the 8-byte PNG
* signature, and non-zero otherwise. Having num_to_check == 0 or
* start > 7 will always fail (ie return non-zero).
*/
-PNG_EXPORT(int,png_sig_cmp) PNGARG((png_bytep sig, png_size_t start,
- png_size_t num_to_check));
+PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, png_size_t start,
+ png_size_t num_to_check));
/* Simple signature checking function. This is the same as calling
* png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n).
*/
-#define png_check_sig(sig,n) !png_sig_cmp((sig), 0, (n))
+#define png_check_sig(sig, n) !png_sig_cmp((sig), 0, (n))
/* Allocate and initialize png_ptr struct for reading, and any other memory. */
-PNG_EXPORT(png_structp,png_create_read_struct)
- PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn)) PNG_ALLOCATED;
+PNG_EXPORTA(4, png_structp, png_create_read_struct,
+ (png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn),
+ PNG_ALLOCATED);
/* Allocate and initialize png_ptr struct for writing, and any other memory */
-PNG_EXPORT(png_structp,png_create_write_struct)
- PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn)) PNG_ALLOCATED;
+PNG_EXPORTA(5, png_structp, png_create_write_struct,
+ (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
+ png_error_ptr warn_fn),
+ PNG_ALLOCATED);
-PNG_EXPORT(png_size_t,png_get_compression_buffer_size)
- PNGARG((png_const_structp png_ptr));
+PNG_EXPORT(6, png_size_t, png_get_compression_buffer_size,
+ (png_const_structp png_ptr));
-PNG_EXPORT(void,png_set_compression_buffer_size)
- PNGARG((png_structp png_ptr, png_size_t size));
+PNG_EXPORT(7, void, png_set_compression_buffer_size, (png_structp png_ptr,
+ png_size_t size));
/* Moved from pngconf.h in 1.4.0 and modified to ensure setjmp/longjmp
* match up.
@@ -1552,288 +1031,552 @@
* allocated by the library - the call will return NULL on a mismatch
* indicating an ABI mismatch.
*/
-PNG_EXPORT(jmp_buf*, png_set_longjmp_fn)
- PNGARG((png_structp png_ptr, png_longjmp_ptr longjmp_fn, size_t
- jmp_buf_size));
+PNG_EXPORT(8, jmp_buf*, png_set_longjmp_fn, (png_structp png_ptr,
+ png_longjmp_ptr longjmp_fn, size_t jmp_buf_size));
# define png_jmpbuf(png_ptr) \
- (*png_set_longjmp_fn((png_ptr), longjmp, sizeof (jmp_buf)))
+ (*png_set_longjmp_fn((png_ptr), longjmp, sizeof (jmp_buf)))
#else
# define png_jmpbuf(png_ptr) \
- (LIBPNG_WAS_COMPILED_WITH__PNG_NO_SETJMP)
+ (LIBPNG_WAS_COMPILED_WITH__PNG_NO_SETJMP)
#endif
+/* This function should be used by libpng applications in place of
+ * longjmp(png_ptr->jmpbuf, val). If longjmp_fn() has been set, it
+ * will use it; otherwise it will call PNG_ABORT(). This function was
+ * added in libpng-1.5.0.
+ */
+PNG_EXPORTA(9, void, png_longjmp, (png_structp png_ptr, int val),
+ PNG_NORETURN);
#ifdef PNG_READ_SUPPORTED
/* Reset the compression stream */
-PNG_EXPORT(int,png_reset_zstream) PNGARG((png_structp png_ptr));
+PNG_EXPORT(10, int, png_reset_zstream, (png_structp png_ptr));
#endif
/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */
#ifdef PNG_USER_MEM_SUPPORTED
-PNG_EXPORT(png_structp,png_create_read_struct_2)
- PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
- png_malloc_ptr malloc_fn, png_free_ptr free_fn)) PNG_ALLOCATED;
-PNG_EXPORT(png_structp,png_create_write_struct_2)
- PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
- png_malloc_ptr malloc_fn, png_free_ptr free_fn)) PNG_ALLOCATED;
+PNG_EXPORTA(11, png_structp, png_create_read_struct_2,
+ (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
+ png_error_ptr warn_fn,
+ png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn),
+ PNG_ALLOCATED);
+PNG_EXPORTA(12, png_structp, png_create_write_struct_2,
+ (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
+ png_error_ptr warn_fn,
+ png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn),
+ PNG_ALLOCATED);
#endif
/* Write the PNG file signature. */
-PNG_EXPORT(void,png_write_sig) PNGARG((png_structp png_ptr));
+PNG_EXPORT(13, void, png_write_sig, (png_structp png_ptr));
/* Write a PNG chunk - size, type, (optional) data, CRC. */
-PNG_EXPORT(void,png_write_chunk) PNGARG((png_structp png_ptr,
- png_bytep chunk_name, png_bytep data, png_size_t length));
+PNG_EXPORT(14, void, png_write_chunk, (png_structp png_ptr, png_const_bytep
+ chunk_name, png_const_bytep data, png_size_t length));
/* Write the start of a PNG chunk - length and chunk name. */
-PNG_EXPORT(void,png_write_chunk_start) PNGARG((png_structp png_ptr,
- png_bytep chunk_name, png_uint_32 length));
+PNG_EXPORT(15, void, png_write_chunk_start, (png_structp png_ptr,
+ png_const_bytep chunk_name, png_uint_32 length));
/* Write the data of a PNG chunk started with png_write_chunk_start(). */
-PNG_EXPORT(void,png_write_chunk_data) PNGARG((png_structp png_ptr,
- png_bytep data, png_size_t length));
+PNG_EXPORT(16, void, png_write_chunk_data, (png_structp png_ptr,
+ png_const_bytep data, png_size_t length));
/* Finish a chunk started with png_write_chunk_start() (includes CRC). */
-PNG_EXPORT(void,png_write_chunk_end) PNGARG((png_structp png_ptr));
+PNG_EXPORT(17, void, png_write_chunk_end, (png_structp png_ptr));
/* Allocate and initialize the info structure */
-PNG_EXPORT(png_infop,png_create_info_struct)
- PNGARG((png_structp png_ptr)) PNG_ALLOCATED;
+PNG_EXPORTA(18, png_infop, png_create_info_struct, (png_structp png_ptr),
+ PNG_ALLOCATED);
-PNG_EXPORT(void,png_info_init_3) PNGARG((png_infopp info_ptr,
+PNG_EXPORT(19, void, png_info_init_3, (png_infopp info_ptr,
png_size_t png_info_struct_size));
/* Writes all the PNG information before the image. */
-PNG_EXPORT(void,png_write_info_before_PLTE) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-PNG_EXPORT(void,png_write_info) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+PNG_EXPORT(20, void, png_write_info_before_PLTE,
+ (png_structp png_ptr, png_infop info_ptr));
+PNG_EXPORT(21, void, png_write_info,
+ (png_structp png_ptr, png_infop info_ptr));
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read the information before the actual image data. */
-PNG_EXPORT(void,png_read_info) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+PNG_EXPORT(22, void, png_read_info,
+ (png_structp png_ptr, png_infop info_ptr));
#endif
#ifdef PNG_TIME_RFC1123_SUPPORTED
-PNG_EXPORT(png_charp,png_convert_to_rfc1123)
- PNGARG((png_structp png_ptr, png_timep ptime));
+PNG_EXPORT(23, png_const_charp, png_convert_to_rfc1123,
+ (png_structp png_ptr,
+ png_const_timep ptime));
#endif
#ifdef PNG_CONVERT_tIME_SUPPORTED
/* Convert from a struct tm to png_time */
-PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime,
- struct tm FAR * ttime));
+PNG_EXPORT(24, void, png_convert_from_struct_tm, (png_timep ptime,
+ PNG_CONST struct tm FAR * ttime));
/* Convert from time_t to png_time. Uses gmtime() */
-PNG_EXPORT(void,png_convert_from_time_t) PNGARG((png_timep ptime,
- time_t ttime));
+PNG_EXPORT(25, void, png_convert_from_time_t,
+ (png_timep ptime, time_t ttime));
#endif /* PNG_CONVERT_tIME_SUPPORTED */
#ifdef PNG_READ_EXPAND_SUPPORTED
/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */
-PNG_EXPORT(void,png_set_expand) PNGARG((png_structp png_ptr));
-PNG_EXPORT(void,png_set_expand_gray_1_2_4_to_8) PNGARG((png_structp
- png_ptr));
-PNG_EXPORT(void,png_set_palette_to_rgb) PNGARG((png_structp png_ptr));
-PNG_EXPORT(void,png_set_tRNS_to_alpha) PNGARG((png_structp png_ptr));
+PNG_EXPORT(26, void, png_set_expand, (png_structp png_ptr));
+PNG_EXPORT(27, void, png_set_expand_gray_1_2_4_to_8, (png_structp png_ptr));
+PNG_EXPORT(28, void, png_set_palette_to_rgb, (png_structp png_ptr));
+PNG_EXPORT(29, void, png_set_tRNS_to_alpha, (png_structp png_ptr));
+#endif
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+/* Expand to 16-bit channels, forces conversion of palette to RGB and expansion
+ * of a tRNS chunk if present.
+ */
+PNG_EXPORT(221, void, png_set_expand_16, (png_structp png_ptr));
#endif
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
/* Use blue, green, red order for pixels. */
-PNG_EXPORT(void,png_set_bgr) PNGARG((png_structp png_ptr));
+PNG_EXPORT(30, void, png_set_bgr, (png_structp png_ptr));
#endif
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
/* Expand the grayscale to 24-bit RGB if necessary. */
-PNG_EXPORT(void,png_set_gray_to_rgb) PNGARG((png_structp png_ptr));
+PNG_EXPORT(31, void, png_set_gray_to_rgb, (png_structp png_ptr));
#endif
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
/* Reduce RGB to grayscale. */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(void,png_set_rgb_to_gray) PNGARG((png_structp png_ptr,
- int error_action, double red, double green ));
-#endif
-PNG_EXPORT(void,png_set_rgb_to_gray_fixed) PNGARG((png_structp png_ptr,
- int error_action, png_fixed_point red, png_fixed_point green ));
-PNG_EXPORT(png_byte,png_get_rgb_to_gray_status) PNGARG((png_const_structp
- png_ptr));
+#define PNG_ERROR_ACTION_NONE 1
+#define PNG_ERROR_ACTION_WARN 2
+#define PNG_ERROR_ACTION_ERROR 3
+#define PNG_RGB_TO_GRAY_DEFAULT (-1)/*for red/green coefficients*/
+
+PNG_FP_EXPORT(32, void, png_set_rgb_to_gray, (png_structp png_ptr,
+ int error_action, double red, double green));
+PNG_FIXED_EXPORT(33, void, png_set_rgb_to_gray_fixed, (png_structp png_ptr,
+ int error_action, png_fixed_point red, png_fixed_point green));
+
+PNG_EXPORT(34, png_byte, png_get_rgb_to_gray_status, (png_const_structp
+ png_ptr));
#endif
-PNG_EXPORT(void,png_build_grayscale_palette) PNGARG((int bit_depth,
- png_colorp palette));
+#ifdef PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
+PNG_EXPORT(35, void, png_build_grayscale_palette, (int bit_depth,
+ png_colorp palette));
+#endif
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+/* How the alpha channel is interpreted - this affects how the color channels of
+ * a PNG file are returned when an alpha channel, or tRNS chunk in a palette
+ * file, is present.
+ *
+ * This has no effect on the way pixels are written into a PNG output
+ * datastream. The color samples in a PNG datastream are never premultiplied
+ * with the alpha samples.
+ *
+ * The default is to return data according to the PNG specification: the alpha
+ * channel is a linear measure of the contribution of the pixel to the
+ * corresponding composited pixel. The gamma encoded color channels must be
+ * scaled according to the contribution and to do this it is necessary to undo
+ * the encoding, scale the color values, perform the composition and reencode
+ * the values. This is the 'PNG' mode.
+ *
+ * The alternative is to 'associate' the alpha with the color information by
+ * storing color channel values that have been scaled by the alpha. The
+ * advantage is that the color channels can be resampled (the image can be
+ * scaled) in this form. The disadvantage is that normal practice is to store
+ * linear, not (gamma) encoded, values and this requires 16-bit channels for
+ * still images rather than the 8-bit channels that are just about sufficient if
+ * gamma encoding is used. In addition all non-transparent pixel values,
+ * including completely opaque ones, must be gamma encoded to produce the final
+ * image. This is the 'STANDARD', 'ASSOCIATED' or 'PREMULTIPLIED' mode (the
+ * latter being the two common names for associated alpha color channels.)
+ *
+ * Since it is not necessary to perform arithmetic on opaque color values so
+ * long as they are not to be resampled and are in the final color space it is
+ * possible to optimize the handling of alpha by storing the opaque pixels in
+ * the PNG format (adjusted for the output color space) while storing partially
+ * opaque pixels in the standard, linear, format. The accuracy required for
+ * standard alpha composition is relatively low, because the pixels are
+ * isolated, therefore typically the accuracy loss in storing 8-bit linear
+ * values is acceptable. (This is not true if the alpha channel is used to
+ * simulate transparency over large areas - use 16 bits or the PNG mode in
+ * this case!) This is the 'OPTIMIZED' mode. For this mode a pixel is
+ * treated as opaque only if the alpha value is equal to the maximum value.
+ *
+ * The final choice is to gamma encode the alpha channel as well. This is
+ * broken because, in practice, no implementation that uses this choice
+ * correctly undoes the encoding before handling alpha composition. Use this
+ * choice only if other serious errors in the software or hardware you use
+ * mandate it; the typical serious error is for dark halos to appear around
+ * opaque areas of the composited PNG image because of arithmetic overflow.
+ *
+ * The API function png_set_alpha_mode specifies which of these choices to use
+ * with an enumerated 'mode' value and the gamma of the required output:
+ */
+#define PNG_ALPHA_PNG 0 /* according to the PNG standard */
+#define PNG_ALPHA_STANDARD 1 /* according to Porter/Duff */
+#define PNG_ALPHA_ASSOCIATED 1 /* as above; this is the normal practice */
+#define PNG_ALPHA_PREMULTIPLIED 1 /* as above */
+#define PNG_ALPHA_OPTIMIZED 2 /* 'PNG' for opaque pixels, else 'STANDARD' */
+#define PNG_ALPHA_BROKEN 3 /* the alpha channel is gamma encoded */
+
+PNG_FP_EXPORT(227, void, png_set_alpha_mode, (png_structp png_ptr, int mode,
+ double output_gamma));
+PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, (png_structp png_ptr,
+ int mode, png_fixed_point output_gamma));
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+/* The output_gamma value is a screen gamma in libpng terminology: it expresses
+ * how to decode the output values, not how they are encoded. The values used
+ * correspond to the normal numbers used to describe the overall gamma of a
+ * computer display system; for example 2.2 for an sRGB conformant system. The
+ * values are scaled by 100000 in the _fixed version of the API (so 220000 for
+ * sRGB.)
+ *
+ * The inverse of the value is always used to provide a default for the PNG file
+ * encoding if it has no gAMA chunk and if png_set_gamma() has not been called
+ * to override the PNG gamma information.
+ *
+ * When the ALPHA_OPTIMIZED mode is selected the output gamma is used to encode
+ * opaque pixels however pixels with lower alpha values are not encoded,
+ * regardless of the output gamma setting.
+ *
+ * When the standard Porter Duff handling is requested with mode 1 the output
+ * encoding is set to be linear and the output_gamma value is only relevant
+ * as a default for input data that has no gamma information. The linear output
+ * encoding will be overridden if png_set_gamma() is called - the results may be
+ * highly unexpected!
+ *
+ * The following numbers are derived from the sRGB standard and the research
+ * behind it. sRGB is defined to be approximated by a PNG gAMA chunk value of
+ * 0.45455 (1/2.2) for PNG. The value implicitly includes any viewing
+ * correction required to take account of any differences in the color
+ * environment of the original scene and the intended display environment; the
+ * value expresses how to *decode* the image for display, not how the original
+ * data was *encoded*.
+ *
+ * sRGB provides a peg for the PNG standard by defining a viewing environment.
+ * sRGB itself, and earlier TV standards, actually use a more complex transform
+ * (a linear portion then a gamma 2.4 power law) than PNG can express. (PNG is
+ * limited to simple power laws.) By saying that an image for direct display on
+ * an sRGB conformant system should be stored with a gAMA chunk value of 45455
+ * (11.3.3.2 and 11.3.3.5 of the ISO PNG specification) the PNG specification
+ * makes it possible to derive values for other display systems and
+ * environments.
+ *
+ * The Mac value is deduced from the sRGB based on an assumption that the actual
+ * extra viewing correction used in early Mac display systems was implemented as
+ * a power 1.45 lookup table.
+ *
+ * Any system where a programmable lookup table is used or where the behavior of
+ * the final display device characteristics can be changed requires system
+ * specific code to obtain the current characteristic. However this can be
+ * difficult and most PNG gamma correction only requires an approximate value.
+ *
+ * By default, if png_set_alpha_mode() is not called, libpng assumes that all
+ * values are unencoded, linear, values and that the output device also has a
+ * linear characteristic. This is only very rarely correct - it is invariably
+ * better to call png_set_alpha_mode() with PNG_DEFAULT_sRGB than rely on the
+ * default if you don't know what the right answer is!
+ *
+ * The special value PNG_GAMMA_MAC_18 indicates an older Mac system (pre Mac OS
+ * 10.6) which used a correction table to implement a somewhat lower gamma on an
+ * otherwise sRGB system.
+ *
+ * Both these values are reserved (not simple gamma values) in order to allow
+ * more precise correction internally in the future.
+ *
+ * NOTE: the following values can be passed to either the fixed or floating
+ * point APIs, but the floating point API will also accept floating point
+ * values.
+ */
+#define PNG_DEFAULT_sRGB -1 /* sRGB gamma and color space */
+#define PNG_GAMMA_MAC_18 -2 /* Old Mac '1.8' gamma and color space */
+#define PNG_GAMMA_sRGB 220000 /* Television standards--matches sRGB gamma */
+#define PNG_GAMMA_LINEAR PNG_FP_1 /* Linear */
+#endif
+
+/* The following are examples of calls to png_set_alpha_mode to achieve the
+ * required overall gamma correction and, where necessary, alpha
+ * premultiplication.
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB);
+ * This is the default libpng handling of the alpha channel - it is not
+ * pre-multiplied into the color components. In addition the call states
+ * that the output is for a sRGB system and causes all PNG files without gAMA
+ * chunks to be assumed to be encoded using sRGB.
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_GAMMA_MAC);
+ * In this case the output is assumed to be something like an sRGB conformant
+ * display preceeded by a power-law lookup table of power 1.45. This is how
+ * early Mac systems behaved.
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_STANDARD, PNG_GAMMA_LINEAR);
+ * This is the classic Jim Blinn approach and will work in academic
+ * environments where everything is done by the book. It has the shortcoming
+ * of assuming that input PNG data with no gamma information is linear - this
+ * is unlikely to be correct unless the PNG files where generated locally.
+ * Most of the time the output precision will be so low as to show
+ * significant banding in dark areas of the image.
+ *
+ * png_set_expand_16(pp);
+ * png_set_alpha_mode(pp, PNG_ALPHA_STANDARD, PNG_DEFAULT_sRGB);
+ * This is a somewhat more realistic Jim Blinn inspired approach. PNG files
+ * are assumed to have the sRGB encoding if not marked with a gamma value and
+ * the output is always 16 bits per component. This permits accurate scaling
+ * and processing of the data. If you know that your input PNG files were
+ * generated locally you might need to replace PNG_DEFAULT_sRGB with the
+ * correct value for your system.
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_OPTIMIZED, PNG_DEFAULT_sRGB);
+ * If you just need to composite the PNG image onto an existing background
+ * and if you control the code that does this you can use the optimization
+ * setting. In this case you just copy completely opaque pixels to the
+ * output. For pixels that are not completely transparent (you just skip
+ * those) you do the composition math using png_composite or png_composite_16
+ * below then encode the resultant 8-bit or 16-bit values to match the output
+ * encoding.
+ *
+ * Other cases
+ * If neither the PNG nor the standard linear encoding work for you because
+ * of the software or hardware you use then you have a big problem. The PNG
+ * case will probably result in halos around the image. The linear encoding
+ * will probably result in a washed out, too bright, image (it's actually too
+ * contrasty.) Try the ALPHA_OPTIMIZED mode above - this will probably
+ * substantially reduce the halos. Alternatively try:
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_BROKEN, PNG_DEFAULT_sRGB);
+ * This option will also reduce the halos, but there will be slight dark
+ * halos round the opaque parts of the image where the background is light.
+ * In the OPTIMIZED mode the halos will be light halos where the background
+ * is dark. Take your pick - the halos are unavoidable unless you can get
+ * your hardware/software fixed! (The OPTIMIZED approach is slightly
+ * faster.)
+ *
+ * When the default gamma of PNG files doesn't match the output gamma.
+ * If you have PNG files with no gamma information png_set_alpha_mode allows
+ * you to provide a default gamma, but it also sets the ouput gamma to the
+ * matching value. If you know your PNG files have a gamma that doesn't
+ * match the output you can take advantage of the fact that
+ * png_set_alpha_mode always sets the output gamma but only sets the PNG
+ * default if it is not already set:
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB);
+ * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_GAMMA_MAC);
+ * The first call sets both the default and the output gamma values, the
+ * second call overrides the output gamma without changing the default. This
+ * is easier than achieving the same effect with png_set_gamma. You must use
+ * PNG_ALPHA_PNG for the first call - internal checking in png_set_alpha will
+ * fire if more than one call to png_set_alpha_mode and png_set_background is
+ * made in the same read operation, however multiple calls with PNG_ALPHA_PNG
+ * are ignored.
+ */
#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
-PNG_EXPORT(void,png_set_strip_alpha) PNGARG((png_structp png_ptr));
+PNG_EXPORT(36, void, png_set_strip_alpha, (png_structp png_ptr));
#endif
#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \
defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
-PNG_EXPORT(void,png_set_swap_alpha) PNGARG((png_structp png_ptr));
+PNG_EXPORT(37, void, png_set_swap_alpha, (png_structp png_ptr));
#endif
#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \
defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
-PNG_EXPORT(void,png_set_invert_alpha) PNGARG((png_structp png_ptr));
+PNG_EXPORT(38, void, png_set_invert_alpha, (png_structp png_ptr));
#endif
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
/* Add a filler byte to 8-bit Gray or 24-bit RGB images. */
-PNG_EXPORT(void,png_set_filler) PNGARG((png_structp png_ptr,
- png_uint_32 filler, int flags));
+PNG_EXPORT(39, void, png_set_filler, (png_structp png_ptr, png_uint_32 filler,
+ int flags));
/* The values of the PNG_FILLER_ defines should NOT be changed */
-#define PNG_FILLER_BEFORE 0
-#define PNG_FILLER_AFTER 1
+# define PNG_FILLER_BEFORE 0
+# define PNG_FILLER_AFTER 1
/* Add an alpha byte to 8-bit Gray or 24-bit RGB images. */
-PNG_EXPORT(void,png_set_add_alpha) PNGARG((png_structp png_ptr,
- png_uint_32 filler, int flags));
+PNG_EXPORT(40, void, png_set_add_alpha,
+ (png_structp png_ptr, png_uint_32 filler,
+ int flags));
#endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
/* Swap bytes in 16-bit depth files. */
-PNG_EXPORT(void,png_set_swap) PNGARG((png_structp png_ptr));
+PNG_EXPORT(41, void, png_set_swap, (png_structp png_ptr));
#endif
#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
/* Use 1 byte per pixel in 1, 2, or 4-bit depth files. */
-PNG_EXPORT(void,png_set_packing) PNGARG((png_structp png_ptr));
+PNG_EXPORT(42, void, png_set_packing, (png_structp png_ptr));
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \
defined(PNG_WRITE_PACKSWAP_SUPPORTED)
/* Swap packing order of pixels in bytes. */
-PNG_EXPORT(void,png_set_packswap) PNGARG((png_structp png_ptr));
+PNG_EXPORT(43, void, png_set_packswap, (png_structp png_ptr));
#endif
#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
/* Converts files to legal bit depths. */
-PNG_EXPORT(void,png_set_shift) PNGARG((png_structp png_ptr,
- png_color_8p true_bits));
+PNG_EXPORT(44, void, png_set_shift, (png_structp png_ptr, png_const_color_8p
+ true_bits));
#endif
#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
defined(PNG_WRITE_INTERLACING_SUPPORTED)
-/* Have the code handle the interlacing. Returns the number of passes. */
-PNG_EXPORT(int,png_set_interlace_handling) PNGARG((png_structp png_ptr));
+/* Have the code handle the interlacing. Returns the number of passes.
+ * MUST be called before png_read_update_info or png_start_read_image,
+ * otherwise it will not have the desired effect. Note that it is still
+ * necessary to call png_read_row or png_read_rows png_get_image_height
+ * times for each pass.
+*/
+PNG_EXPORT(45, int, png_set_interlace_handling, (png_structp png_ptr));
#endif
#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
/* Invert monochrome files */
-PNG_EXPORT(void,png_set_invert_mono) PNGARG((png_structp png_ptr));
+PNG_EXPORT(46, void, png_set_invert_mono, (png_structp png_ptr));
#endif
#ifdef PNG_READ_BACKGROUND_SUPPORTED
-/* Handle alpha and tRNS by replacing with a background color. */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(void,png_set_background) PNGARG((png_structp png_ptr,
- png_color_16p background_color, int background_gamma_code,
- int need_expand, double background_gamma));
+/* Handle alpha and tRNS by replacing with a background color. Prior to
+ * libpng-1.5.4 this API must not be called before the PNG file header has been
+ * read. Doing so will result in unexpected behavior and possible warnings or
+ * errors if the PNG file contains a bKGD chunk.
+ */
+PNG_FP_EXPORT(47, void, png_set_background, (png_structp png_ptr,
+ png_const_color_16p background_color, int background_gamma_code,
+ int need_expand, double background_gamma));
+PNG_FIXED_EXPORT(215, void, png_set_background_fixed, (png_structp png_ptr,
+ png_const_color_16p background_color, int background_gamma_code,
+ int need_expand, png_fixed_point background_gamma));
#endif
-#define PNG_BACKGROUND_GAMMA_UNKNOWN 0
-#define PNG_BACKGROUND_GAMMA_SCREEN 1
-#define PNG_BACKGROUND_GAMMA_FILE 2
-#define PNG_BACKGROUND_GAMMA_UNIQUE 3
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+# define PNG_BACKGROUND_GAMMA_UNKNOWN 0
+# define PNG_BACKGROUND_GAMMA_SCREEN 1
+# define PNG_BACKGROUND_GAMMA_FILE 2
+# define PNG_BACKGROUND_GAMMA_UNIQUE 3
#endif
-#ifdef PNG_READ_16_TO_8_SUPPORTED
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+/* Scale a 16-bit depth file down to 8-bit, accurately. */
+PNG_EXPORT(229, void, png_set_scale_16, (png_structp png_ptr));
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+#define PNG_READ_16_TO_8 SUPPORTED /* Name prior to 1.5.4 */
/* Strip the second byte of information from a 16-bit depth file. */
-PNG_EXPORT(void,png_set_strip_16) PNGARG((png_structp png_ptr));
+PNG_EXPORT(48, void, png_set_strip_16, (png_structp png_ptr));
#endif
#ifdef PNG_READ_QUANTIZE_SUPPORTED
/* Turn on quantizing, and reduce the palette to the number of colors
- * available. Prior to libpng-1.4.2, this was png_set_dither().
+ * available.
*/
-PNG_EXPORT(void,png_set_quantize) PNGARG((png_structp png_ptr,
- png_colorp palette, int num_palette, int maximum_colors,
- png_uint_16p histogram, int full_quantize));
+PNG_EXPORT(49, void, png_set_quantize,
+ (png_structp png_ptr, png_colorp palette,
+ int num_palette, int maximum_colors, png_const_uint_16p histogram,
+ int full_quantize));
#endif
-/* This migration aid will be removed from libpng-1.5.0 */
-#define png_set_dither png_set_quantize
#ifdef PNG_READ_GAMMA_SUPPORTED
-/* Handle gamma correction. Screen_gamma=(display_exponent) */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(void,png_set_gamma) PNGARG((png_structp png_ptr,
- double screen_gamma, double default_file_gamma));
-#endif
-#endif
+/* The threshold on gamma processing is configurable but hard-wired into the
+ * library. The following is the floating point variant.
+ */
+#define PNG_GAMMA_THRESHOLD (PNG_GAMMA_THRESHOLD_FIXED*.00001)
+/* Handle gamma correction. Screen_gamma=(display_exponent).
+ * NOTE: this API simply sets the screen and file gamma values. It will
+ * therefore override the value for gamma in a PNG file if it is called after
+ * the file header has been read - use with care - call before reading the PNG
+ * file for best results!
+ *
+ * These routines accept the same gamma values as png_set_alpha_mode (described
+ * above). The PNG_GAMMA_ defines and PNG_DEFAULT_sRGB can be passed to either
+ * API (floating point or fixed.) Notice, however, that the 'file_gamma' value
+ * is the inverse of a 'screen gamma' value.
+ */
+PNG_FP_EXPORT(50, void, png_set_gamma,
+ (png_structp png_ptr, double screen_gamma,
+ double override_file_gamma));
+PNG_FIXED_EXPORT(208, void, png_set_gamma_fixed, (png_structp png_ptr,
+ png_fixed_point screen_gamma, png_fixed_point override_file_gamma));
+#endif
#ifdef PNG_WRITE_FLUSH_SUPPORTED
/* Set how many lines between output flushes - 0 for no flushing */
-PNG_EXPORT(void,png_set_flush) PNGARG((png_structp png_ptr, int nrows));
+PNG_EXPORT(51, void, png_set_flush, (png_structp png_ptr, int nrows));
/* Flush the current PNG output buffer */
-PNG_EXPORT(void,png_write_flush) PNGARG((png_structp png_ptr));
+PNG_EXPORT(52, void, png_write_flush, (png_structp png_ptr));
#endif
/* Optional update palette with requested transformations */
-PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr));
+PNG_EXPORT(53, void, png_start_read_image, (png_structp png_ptr));
/* Optional call to update the users info structure */
-PNG_EXPORT(void,png_read_update_info) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+PNG_EXPORT(54, void, png_read_update_info,
+ (png_structp png_ptr, png_infop info_ptr));
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read one or more rows of image data. */
-PNG_EXPORT(void,png_read_rows) PNGARG((png_structp png_ptr,
- png_bytepp row, png_bytepp display_row, png_uint_32 num_rows));
+PNG_EXPORT(55, void, png_read_rows, (png_structp png_ptr, png_bytepp row,
+ png_bytepp display_row, png_uint_32 num_rows));
#endif
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read a row of data. */
-PNG_EXPORT(void,png_read_row) PNGARG((png_structp png_ptr,
- png_bytep row,
- png_bytep display_row));
+PNG_EXPORT(56, void, png_read_row, (png_structp png_ptr, png_bytep row,
+ png_bytep display_row));
#endif
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read the whole image into memory at once. */
-PNG_EXPORT(void,png_read_image) PNGARG((png_structp png_ptr,
- png_bytepp image));
+PNG_EXPORT(57, void, png_read_image, (png_structp png_ptr, png_bytepp image));
#endif
/* Write a row of image data */
-PNG_EXPORT(void,png_write_row) PNGARG((png_structp png_ptr,
- png_bytep row));
+PNG_EXPORT(58, void, png_write_row,
+ (png_structp png_ptr, png_const_bytep row));
-/* Write a few rows of image data */
-PNG_EXPORT(void,png_write_rows) PNGARG((png_structp png_ptr,
- png_bytepp row, png_uint_32 num_rows));
+/* Write a few rows of image data: (*row) is not written; however, the type
+ * is declared as writeable to maintain compatibility with previous versions
+ * of libpng and to allow the 'display_row' array from read_rows to be passed
+ * unchanged to write_rows.
+ */
+PNG_EXPORT(59, void, png_write_rows, (png_structp png_ptr, png_bytepp row,
+ png_uint_32 num_rows));
/* Write the image data */
-PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr,
- png_bytepp image));
+PNG_EXPORT(60, void, png_write_image,
+ (png_structp png_ptr, png_bytepp image));
/* Write the end of the PNG file. */
-PNG_EXPORT(void,png_write_end) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+PNG_EXPORT(61, void, png_write_end,
+ (png_structp png_ptr, png_infop info_ptr));
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read the end of the PNG file. */
-PNG_EXPORT(void,png_read_end) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+PNG_EXPORT(62, void, png_read_end, (png_structp png_ptr, png_infop info_ptr));
#endif
/* Free any memory associated with the png_info_struct */
-PNG_EXPORT(void,png_destroy_info_struct) PNGARG((png_structp png_ptr,
- png_infopp info_ptr_ptr));
+PNG_EXPORT(63, void, png_destroy_info_struct, (png_structp png_ptr,
+ png_infopp info_ptr_ptr));
/* Free any memory associated with the png_struct and the png_info_structs */
-PNG_EXPORT(void,png_destroy_read_struct) PNGARG((png_structpp
- png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr));
+PNG_EXPORT(64, void, png_destroy_read_struct, (png_structpp png_ptr_ptr,
+ png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr));
/* Free any memory associated with the png_struct and the png_info_structs */
-PNG_EXPORT(void,png_destroy_write_struct)
- PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr));
+PNG_EXPORT(65, void, png_destroy_write_struct, (png_structpp png_ptr_ptr,
+ png_infopp info_ptr_ptr));
/* Set the libpng method of handling chunk CRC errors */
-PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr,
- int crit_action, int ancil_action));
+PNG_EXPORT(66, void, png_set_crc_action,
+ (png_structp png_ptr, int crit_action, int ancil_action));
-/* Values for png_set_crc_action() to say how to handle CRC errors in
+/* Values for png_set_crc_action() say how to handle CRC errors in
* ancillary and critical chunks, and whether to use the data contained
* therein. Note that it is impossible to "discard" data in a critical
* chunk. For versions prior to 0.90, the action was always error/quit,
@@ -1860,8 +1603,8 @@
/* Set the filtering method(s) used by libpng. Currently, the only valid
* value for "method" is 0.
*/
-PNG_EXPORT(void,png_set_filter) PNGARG((png_structp png_ptr, int method,
- int filters));
+PNG_EXPORT(67, void, png_set_filter,
+ (png_structp png_ptr, int method, int filters));
/* Flags for png_set_filter() to say which filters to use. The flags
* are chosen so that they don't conflict with real filter types
@@ -1916,11 +1659,13 @@
* the weights and costs are set to 1.0, this degenerates the WEIGHTED method
* to the UNWEIGHTED method, but with added encoding time/computation.
*/
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(void,png_set_filter_heuristics) PNGARG((png_structp png_ptr,
- int heuristic_method, int num_weights, png_doublep filter_weights,
- png_doublep filter_costs));
-#endif
+PNG_FP_EXPORT(68, void, png_set_filter_heuristics, (png_structp png_ptr,
+ int heuristic_method, int num_weights, png_const_doublep filter_weights,
+ png_const_doublep filter_costs));
+PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed,
+ (png_structp png_ptr,
+ int heuristic_method, int num_weights, png_const_fixed_point_p
+ filter_weights, png_const_fixed_point_p filter_costs));
#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
/* Heuristic used for row filter selection. These defines should NOT be
@@ -1931,6 +1676,7 @@
#define PNG_FILTER_HEURISTIC_WEIGHTED 2 /* Experimental feature */
#define PNG_FILTER_HEURISTIC_LAST 3 /* Not a valid value */
+#ifdef PNG_WRITE_SUPPORTED
/* Set the library compression level. Currently, valid values range from
* 0 - 9, corresponding directly to the zlib compression levels 0 - 9
* (0 - no compression, 9 - "maximal" compression). Note that tests have
@@ -1938,34 +1684,58 @@
* for PNG images, and do considerably fewer caclulations. In the future,
* these values may not correspond directly to the zlib compression levels.
*/
-PNG_EXPORT(void,png_set_compression_level) PNGARG((png_structp png_ptr,
- int level));
+PNG_EXPORT(69, void, png_set_compression_level,
+ (png_structp png_ptr, int level));
-PNG_EXPORT(void,png_set_compression_mem_level)
- PNGARG((png_structp png_ptr, int mem_level));
+PNG_EXPORT(70, void, png_set_compression_mem_level, (png_structp png_ptr,
+ int mem_level));
-PNG_EXPORT(void,png_set_compression_strategy)
- PNGARG((png_structp png_ptr, int strategy));
+PNG_EXPORT(71, void, png_set_compression_strategy, (png_structp png_ptr,
+ int strategy));
-PNG_EXPORT(void,png_set_compression_window_bits)
- PNGARG((png_structp png_ptr, int window_bits));
+/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
+ * smaller value of window_bits if it can do so safely.
+ */
+PNG_EXPORT(72, void, png_set_compression_window_bits, (png_structp png_ptr,
+ int window_bits));
-PNG_EXPORT(void,png_set_compression_method) PNGARG((png_structp png_ptr,
- int method));
+PNG_EXPORT(73, void, png_set_compression_method, (png_structp png_ptr,
+ int method));
+#endif
+
+#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+/* Also set zlib parameters for compressing non-IDAT chunks */
+PNG_EXPORT(222, void, png_set_text_compression_level,
+ (png_structp png_ptr, int level));
+
+PNG_EXPORT(223, void, png_set_text_compression_mem_level, (png_structp png_ptr,
+ int mem_level));
+
+PNG_EXPORT(224, void, png_set_text_compression_strategy, (png_structp png_ptr,
+ int strategy));
+
+/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
+ * smaller value of window_bits if it can do so safely.
+ */
+PNG_EXPORT(225, void, png_set_text_compression_window_bits, (png_structp
+ png_ptr, int window_bits));
+
+PNG_EXPORT(226, void, png_set_text_compression_method, (png_structp png_ptr,
+ int method));
+#endif /* PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED */
/* These next functions are called for input/output, memory, and error
* handling. They are in the file pngrio.c, pngwio.c, and pngerror.c,
* and call standard C I/O routines such as fread(), fwrite(), and
* fprintf(). These functions can be made to use other I/O routines
* at run time for those applications that need to handle I/O in a
- * different manner by calling png_set_???_fn(). See libpng.txt for
+ * different manner by calling png_set_???_fn(). See libpng-manual.txt for
* more information.
*/
#ifdef PNG_STDIO_SUPPORTED
/* Initialize the input/output for the PNG file to the default functions. */
-PNG_EXPORT(void,png_init_io) PNGARG((png_structp png_ptr,
- png_FILE_p fp));
+PNG_EXPORT(74, void, png_init_io, (png_structp png_ptr, png_FILE_p fp));
#endif
/* Replace the (error and abort), and warning functions with user
@@ -1976,11 +1746,12 @@
* default function will be used.
*/
-PNG_EXPORT(void,png_set_error_fn) PNGARG((png_structp png_ptr,
- png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn));
+PNG_EXPORT(75, void, png_set_error_fn,
+ (png_structp png_ptr, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warning_fn));
/* Return the user pointer associated with the error functions */
-PNG_EXPORT(png_voidp,png_get_error_ptr) PNGARG((png_const_structp png_ptr));
+PNG_EXPORT(76, png_voidp, png_get_error_ptr, (png_const_structp png_ptr));
/* Replace the default data output functions with a user supplied one(s).
* If buffered output is not used, then output_flush_fn can be set to NULL.
@@ -1992,101 +1763,139 @@
* default flush function, which uses the standard *FILE structure, will
* be used.
*/
-PNG_EXPORT(void,png_set_write_fn) PNGARG((png_structp png_ptr,
- png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn));
+PNG_EXPORT(77, void, png_set_write_fn, (png_structp png_ptr, png_voidp io_ptr,
+ png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn));
/* Replace the default data input function with a user supplied one. */
-PNG_EXPORT(void,png_set_read_fn) PNGARG((png_structp png_ptr,
- png_voidp io_ptr, png_rw_ptr read_data_fn));
+PNG_EXPORT(78, void, png_set_read_fn, (png_structp png_ptr, png_voidp io_ptr,
+ png_rw_ptr read_data_fn));
/* Return the user pointer associated with the I/O functions */
-PNG_EXPORT(png_voidp,png_get_io_ptr) PNGARG((png_structp png_ptr));
+PNG_EXPORT(79, png_voidp, png_get_io_ptr, (png_structp png_ptr));
-PNG_EXPORT(void,png_set_read_status_fn) PNGARG((png_structp png_ptr,
- png_read_status_ptr read_row_fn));
+PNG_EXPORT(80, void, png_set_read_status_fn, (png_structp png_ptr,
+ png_read_status_ptr read_row_fn));
-PNG_EXPORT(void,png_set_write_status_fn) PNGARG((png_structp png_ptr,
- png_write_status_ptr write_row_fn));
+PNG_EXPORT(81, void, png_set_write_status_fn, (png_structp png_ptr,
+ png_write_status_ptr write_row_fn));
#ifdef PNG_USER_MEM_SUPPORTED
/* Replace the default memory allocation functions with user supplied one(s). */
-PNG_EXPORT(void,png_set_mem_fn) PNGARG((png_structp png_ptr,
- png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn));
+PNG_EXPORT(82, void, png_set_mem_fn, (png_structp png_ptr, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn));
/* Return the user pointer associated with the memory functions */
-PNG_EXPORT(png_voidp,png_get_mem_ptr) PNGARG((png_const_structp png_ptr));
+PNG_EXPORT(83, png_voidp, png_get_mem_ptr, (png_const_structp png_ptr));
#endif
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
-PNG_EXPORT(void,png_set_read_user_transform_fn) PNGARG((png_structp
- png_ptr, png_user_transform_ptr read_user_transform_fn));
+PNG_EXPORT(84, void, png_set_read_user_transform_fn, (png_structp png_ptr,
+ png_user_transform_ptr read_user_transform_fn));
#endif
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
-PNG_EXPORT(void,png_set_write_user_transform_fn) PNGARG((png_structp
- png_ptr, png_user_transform_ptr write_user_transform_fn));
+PNG_EXPORT(85, void, png_set_write_user_transform_fn, (png_structp png_ptr,
+ png_user_transform_ptr write_user_transform_fn));
#endif
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
- defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-PNG_EXPORT(void,png_set_user_transform_info) PNGARG((png_structp
- png_ptr, png_voidp user_transform_ptr, int user_transform_depth,
- int user_transform_channels));
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+PNG_EXPORT(86, void, png_set_user_transform_info, (png_structp png_ptr,
+ png_voidp user_transform_ptr, int user_transform_depth,
+ int user_transform_channels));
/* Return the user pointer associated with the user transform functions */
-PNG_EXPORT(png_voidp,png_get_user_transform_ptr)
- PNGARG((png_const_structp png_ptr));
+PNG_EXPORT(87, png_voidp, png_get_user_transform_ptr,
+ (png_const_structp png_ptr));
+#endif
+
+#ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED
+/* Return information about the row currently being processed. Note that these
+ * APIs do not fail but will return unexpected results if called outside a user
+ * transform callback. Also note that when transforming an interlaced image the
+ * row number is the row number within the sub-image of the interlace pass, so
+ * the value will increase to the height of the sub-image (not the full image)
+ * then reset to 0 for the next pass.
+ *
+ * Use PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
+ * find the output pixel (x,y) given an interlaced sub-image pixel
+ * (row,col,pass). (See below for these macros.)
+ */
+PNG_EXPORT(217, png_uint_32, png_get_current_row_number, (png_const_structp));
+PNG_EXPORT(218, png_byte, png_get_current_pass_number, (png_const_structp));
#endif
#ifdef PNG_USER_CHUNKS_SUPPORTED
-PNG_EXPORT(void,png_set_read_user_chunk_fn) PNGARG((png_structp png_ptr,
- png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn));
-PNG_EXPORT(png_voidp,png_get_user_chunk_ptr) PNGARG((png_const_structp
- png_ptr));
+PNG_EXPORT(88, void, png_set_read_user_chunk_fn, (png_structp png_ptr,
+ png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn));
+PNG_EXPORT(89, png_voidp, png_get_user_chunk_ptr, (png_const_structp png_ptr));
#endif
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
/* Sets the function callbacks for the push reader, and a pointer to a
* user-defined structure available to the callback functions.
*/
-PNG_EXPORT(void,png_set_progressive_read_fn) PNGARG((png_structp png_ptr,
- png_voidp progressive_ptr,
- png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
- png_progressive_end_ptr end_fn));
+PNG_EXPORT(90, void, png_set_progressive_read_fn, (png_structp png_ptr,
+ png_voidp progressive_ptr, png_progressive_info_ptr info_fn,
+ png_progressive_row_ptr row_fn, png_progressive_end_ptr end_fn));
/* Returns the user pointer associated with the push read functions */
-PNG_EXPORT(png_voidp,png_get_progressive_ptr)
- PNGARG((png_const_structp png_ptr));
+PNG_EXPORT(91, png_voidp, png_get_progressive_ptr, (png_const_structp png_ptr));
/* Function to be called when data becomes available */
-PNG_EXPORT(void,png_process_data) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_bytep buffer, png_size_t buffer_size));
+PNG_EXPORT(92, void, png_process_data,
+ (png_structp png_ptr, png_infop info_ptr,
+ png_bytep buffer, png_size_t buffer_size));
-/* Function that combines rows. Not very much different than the
- * png_combine_row() call. Is this even used?????
+/* A function which may be called *only* within png_process_data to stop the
+ * processing of any more data. The function returns the number of bytes
+ * remaining, excluding any that libpng has cached internally. A subsequent
+ * call to png_process_data must supply these bytes again. If the argument
+ * 'save' is set to true the routine will first save all the pending data and
+ * will always return 0.
*/
-PNG_EXPORT(void,png_progressive_combine_row) PNGARG((png_structp png_ptr,
- png_bytep old_row, png_bytep new_row));
+PNG_EXPORT(219, png_size_t, png_process_data_pause, (png_structp, int save));
+
+/* A function which may be called *only* outside (after) a call to
+ * png_process_data. It returns the number of bytes of data to skip in the
+ * input. Normally it will return 0, but if it returns a non-zero value the
+ * application must skip than number of bytes of input data and pass the
+ * following data to the next call to png_process_data.
+ */
+PNG_EXPORT(220, png_uint_32, png_process_data_skip, (png_structp));
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+/* Function that combines rows. 'new_row' is a flag that should come from
+ * the callback and be non-NULL if anything needs to be done; the library
+ * stores its own version of the new data internally and ignores the passed
+ * in value.
+ */
+PNG_EXPORT(93, void, png_progressive_combine_row, (png_structp png_ptr,
+ png_bytep old_row, png_const_bytep new_row));
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-PNG_EXPORT(png_voidp,png_malloc) PNGARG((png_structp png_ptr,
- png_alloc_size_t size)) PNG_ALLOCATED;
+PNG_EXPORTA(94, png_voidp, png_malloc,
+ (png_structp png_ptr, png_alloc_size_t size),
+ PNG_ALLOCATED);
/* Added at libpng version 1.4.0 */
-PNG_EXPORT(png_voidp,png_calloc) PNGARG((png_structp png_ptr,
- png_alloc_size_t size)) PNG_ALLOCATED;
+PNG_EXPORTA(95, png_voidp, png_calloc,
+ (png_structp png_ptr, png_alloc_size_t size),
+ PNG_ALLOCATED);
/* Added at libpng version 1.2.4 */
-PNG_EXPORT(png_voidp,png_malloc_warn) PNGARG((png_structp png_ptr,
- png_alloc_size_t size)) PNG_ALLOCATED;
+PNG_EXPORTA(96, png_voidp, png_malloc_warn, (png_structp png_ptr,
+ png_alloc_size_t size), PNG_ALLOCATED);
/* Frees a pointer allocated by png_malloc() */
-PNG_EXPORT(void,png_free) PNGARG((png_structp png_ptr, png_voidp ptr));
+PNG_EXPORT(97, void, png_free, (png_structp png_ptr, png_voidp ptr));
/* Free data that was allocated internally */
-PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 free_me, int num));
+PNG_EXPORT(98, void, png_free_data,
+ (png_structp png_ptr, png_infop info_ptr, png_uint_32 free_me, int num));
+
/* Reassign responsibility for freeing existing data, whether allocated
* by libpng or by the application */
-PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int freer, png_uint_32 mask));
+PNG_EXPORT(99, void, png_data_freer,
+ (png_structp png_ptr, png_infop info_ptr, int freer, png_uint_32 mask));
+
/* Assignments for png_data_freer */
#define PNG_DESTROY_WILL_FREE_DATA 1
#define PNG_SET_WILL_FREE_DATA 1
@@ -2107,46 +1916,58 @@
#define PNG_FREE_MUL 0x4220 /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */
#ifdef PNG_USER_MEM_SUPPORTED
-PNG_EXPORT(png_voidp,png_malloc_default) PNGARG((png_structp png_ptr,
- png_alloc_size_t size)) PNG_ALLOCATED;
-PNG_EXPORT(void,png_free_default) PNGARG((png_structp png_ptr,
- png_voidp ptr));
+PNG_EXPORTA(100, png_voidp, png_malloc_default, (png_structp png_ptr,
+ png_alloc_size_t size), PNG_ALLOCATED);
+PNG_EXPORT(101, void, png_free_default, (png_structp png_ptr, png_voidp ptr));
#endif
-#ifndef PNG_NO_ERROR_TEXT
+#ifdef PNG_ERROR_TEXT_SUPPORTED
/* Fatal error in PNG image of libpng - can't continue */
-PNG_EXPORT(void,png_error) PNGARG((png_structp png_ptr,
- png_const_charp error_message)) PNG_NORETURN;
+PNG_EXPORTA(102, void, png_error,
+ (png_structp png_ptr, png_const_charp error_message),
+ PNG_NORETURN);
/* The same, but the chunk name is prepended to the error string. */
-PNG_EXPORT(void,png_chunk_error) PNGARG((png_structp png_ptr,
- png_const_charp error_message)) PNG_NORETURN;
+PNG_EXPORTA(103, void, png_chunk_error, (png_structp png_ptr,
+ png_const_charp error_message), PNG_NORETURN);
#else
/* Fatal error in PNG image of libpng - can't continue */
-PNG_EXPORT(void,png_err) PNGARG((png_structp png_ptr)) PNG_NORETURN;
+PNG_EXPORTA(104, void, png_err, (png_structp png_ptr), PNG_NORETURN);
#endif
+#ifdef PNG_WARNINGS_SUPPORTED
/* Non-fatal error in libpng. Can continue, but may have a problem. */
-PNG_EXPORT(void,png_warning) PNGARG((png_structp png_ptr,
- png_const_charp warning_message));
+PNG_EXPORT(105, void, png_warning, (png_structp png_ptr,
+ png_const_charp warning_message));
/* Non-fatal error in libpng, chunk name is prepended to message. */
-PNG_EXPORT(void,png_chunk_warning) PNGARG((png_structp png_ptr,
- png_const_charp warning_message));
+PNG_EXPORT(106, void, png_chunk_warning, (png_structp png_ptr,
+ png_const_charp warning_message));
+#endif
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
/* Benign error in libpng. Can continue, but may have a problem.
* User can choose whether to handle as a fatal error or as a warning. */
-PNG_EXPORT(void,png_benign_error) PNGARG((png_structp png_ptr,
- png_const_charp warning_message));
+# undef png_benign_error
+PNG_EXPORT(107, void, png_benign_error, (png_structp png_ptr,
+ png_const_charp warning_message));
/* Same, chunk name is prepended to message. */
-PNG_EXPORT(void,png_chunk_benign_error) PNGARG((png_structp png_ptr,
- png_const_charp warning_message));
+# undef png_chunk_benign_error
+PNG_EXPORT(108, void, png_chunk_benign_error, (png_structp png_ptr,
+ png_const_charp warning_message));
-PNG_EXPORT(void,png_set_benign_errors) PNGARG((png_structp
- png_ptr, int allowed));
+PNG_EXPORT(109, void, png_set_benign_errors,
+ (png_structp png_ptr, int allowed));
+#else
+# ifdef PNG_ALLOW_BENIGN_ERRORS
+# define png_benign_error png_warning
+# define png_chunk_benign_error png_chunk_warning
+# else
+# define png_benign_error png_error
+# define png_chunk_benign_error png_chunk_error
+# endif
#endif
/* The png_set_<chunk> functions are for storing values in the png_info_struct.
@@ -2162,258 +1983,289 @@
* png_info_struct.
*/
/* Returns "flag" if chunk data is valid in info_ptr. */
-PNG_EXPORT(png_uint_32,png_get_valid) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_uint_32 flag));
+PNG_EXPORT(110, png_uint_32, png_get_valid,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ png_uint_32 flag));
/* Returns number of bytes needed to hold a transformed row. */
-PNG_EXPORT(png_size_t,png_get_rowbytes) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr));
+PNG_EXPORT(111, png_size_t, png_get_rowbytes, (png_const_structp png_ptr,
+ png_const_infop info_ptr));
#ifdef PNG_INFO_IMAGE_SUPPORTED
/* Returns row_pointers, which is an array of pointers to scanlines that was
* returned from png_read_png().
*/
-PNG_EXPORT(png_bytepp,png_get_rows) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr));
+PNG_EXPORT(112, png_bytepp, png_get_rows,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
/* Set row_pointers, which is an array of pointers to scanlines for use
* by png_write_png().
*/
-PNG_EXPORT(void,png_set_rows) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_bytepp row_pointers));
+PNG_EXPORT(113, void, png_set_rows, (png_structp png_ptr,
+ png_infop info_ptr, png_bytepp row_pointers));
#endif
/* Returns number of color channels in image. */
-PNG_EXPORT(png_byte,png_get_channels) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr));
+PNG_EXPORT(114, png_byte, png_get_channels,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
#ifdef PNG_EASY_ACCESS_SUPPORTED
/* Returns image width in pixels. */
-PNG_EXPORT(png_uint_32, png_get_image_width) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(115, png_uint_32, png_get_image_width, (png_const_structp png_ptr,
+ png_const_infop info_ptr));
/* Returns image height in pixels. */
-PNG_EXPORT(png_uint_32, png_get_image_height) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(116, png_uint_32, png_get_image_height, (png_const_structp png_ptr,
+ png_const_infop info_ptr));
/* Returns image bit_depth. */
-PNG_EXPORT(png_byte, png_get_bit_depth) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(117, png_byte, png_get_bit_depth,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
/* Returns image color_type. */
-PNG_EXPORT(png_byte, png_get_color_type) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(118, png_byte, png_get_color_type, (png_const_structp png_ptr,
+ png_const_infop info_ptr));
/* Returns image filter_type. */
-PNG_EXPORT(png_byte, png_get_filter_type) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(119, png_byte, png_get_filter_type, (png_const_structp png_ptr,
+ png_const_infop info_ptr));
/* Returns image interlace_type. */
-PNG_EXPORT(png_byte, png_get_interlace_type) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(120, png_byte, png_get_interlace_type, (png_const_structp png_ptr,
+ png_const_infop info_ptr));
/* Returns image compression_type. */
-PNG_EXPORT(png_byte, png_get_compression_type) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(121, png_byte, png_get_compression_type, (png_const_structp png_ptr,
+ png_const_infop info_ptr));
/* Returns image resolution in pixels per meter, from pHYs chunk data. */
-PNG_EXPORT(png_uint_32, png_get_pixels_per_meter) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
-PNG_EXPORT(png_uint_32, png_get_x_pixels_per_meter) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
-PNG_EXPORT(png_uint_32, png_get_y_pixels_per_meter) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(122, png_uint_32, png_get_pixels_per_meter,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(123, png_uint_32, png_get_x_pixels_per_meter,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(124, png_uint_32, png_get_y_pixels_per_meter,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
/* Returns pixel aspect ratio, computed from pHYs chunk data. */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(float, png_get_pixel_aspect_ratio) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
-#endif
+PNG_FP_EXPORT(125, float, png_get_pixel_aspect_ratio,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
+PNG_FIXED_EXPORT(210, png_fixed_point, png_get_pixel_aspect_ratio_fixed,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
/* Returns image x, y offset in pixels or microns, from oFFs chunk data. */
-PNG_EXPORT(png_int_32, png_get_x_offset_pixels) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
-PNG_EXPORT(png_int_32, png_get_y_offset_pixels) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
-PNG_EXPORT(png_int_32, png_get_x_offset_microns) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
-PNG_EXPORT(png_int_32, png_get_y_offset_microns) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(126, png_int_32, png_get_x_offset_pixels,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(127, png_int_32, png_get_y_offset_pixels,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(128, png_int_32, png_get_x_offset_microns,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(129, png_int_32, png_get_y_offset_microns,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
#endif /* PNG_EASY_ACCESS_SUPPORTED */
/* Returns pointer to signature string read from PNG header */
-PNG_EXPORT(png_bytep,png_get_signature) PNGARG((png_const_structp png_ptr,
- png_infop info_ptr));
+PNG_EXPORT(130, png_const_bytep, png_get_signature,
+ (png_const_structp png_ptr, png_infop info_ptr));
#ifdef PNG_bKGD_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_bKGD) PNGARG((png_const_structp png_ptr,
- png_infop info_ptr, png_color_16p *background));
+PNG_EXPORT(131, png_uint_32, png_get_bKGD,
+ (png_const_structp png_ptr, png_infop info_ptr,
+ png_color_16p *background));
#endif
#ifdef PNG_bKGD_SUPPORTED
-PNG_EXPORT(void,png_set_bKGD) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_color_16p background));
+PNG_EXPORT(132, void, png_set_bKGD, (png_structp png_ptr, png_infop info_ptr,
+ png_const_color_16p background));
#endif
#ifdef PNG_cHRM_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_cHRM) PNGARG((png_const_structp png_ptr,
+PNG_FP_EXPORT(133, png_uint_32, png_get_cHRM, (png_const_structp png_ptr,
png_const_infop info_ptr, double *white_x, double *white_y, double *red_x,
- double *red_y, double *green_x, double *green_y, double *blue_x,
- double *blue_y));
+ double *red_y, double *green_x, double *green_y, double *blue_x,
+ double *blue_y));
+PNG_FP_EXPORT(230, png_uint_32, png_get_cHRM_XYZ, (png_structp png_ptr,
+ png_const_infop info_ptr, double *red_X, double *red_Y, double *red_Z,
+ double *green_X, double *green_Y, double *green_Z, double *blue_X,
+ double *blue_Y, double *blue_Z));
+#ifdef PNG_FIXED_POINT_SUPPORTED /* Otherwise not implemented */
+PNG_FIXED_EXPORT(134, png_uint_32, png_get_cHRM_fixed,
+ (png_const_structp png_ptr,
+ png_const_infop info_ptr, png_fixed_point *int_white_x,
+ png_fixed_point *int_white_y, png_fixed_point *int_red_x,
+ png_fixed_point *int_red_y, png_fixed_point *int_green_x,
+ png_fixed_point *int_green_y, png_fixed_point *int_blue_x,
+ png_fixed_point *int_blue_y));
#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_cHRM_fixed) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_fixed_point *int_white_x, png_fixed_point
- *int_white_y, png_fixed_point *int_red_x, png_fixed_point *int_red_y,
- png_fixed_point *int_green_x, png_fixed_point *int_green_y, png_fixed_point
- *int_blue_x, png_fixed_point *int_blue_y));
-#endif
+PNG_FIXED_EXPORT(231, png_uint_32, png_get_cHRM_XYZ_fixed,
+ (png_structp png_ptr, png_const_infop info_ptr,
+ png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
+ png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
+ png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
+ png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
+ png_fixed_point *int_blue_Z));
#endif
#ifdef PNG_cHRM_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(void,png_set_cHRM) PNGARG((png_structp png_ptr,
- png_infop info_ptr, double white_x, double white_y, double red_x,
- double red_y, double green_x, double green_y, double blue_x, double blue_y));
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
-PNG_EXPORT(void,png_set_cHRM_fixed) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_fixed_point int_white_x, png_fixed_point int_white_y,
- png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
- int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
- png_fixed_point int_blue_y));
-#endif
+PNG_FP_EXPORT(135, void, png_set_cHRM,
+ (png_structp png_ptr, png_infop info_ptr,
+ double white_x, double white_y, double red_x, double red_y, double green_x,
+ double green_y, double blue_x, double blue_y));
+PNG_FP_EXPORT(232, void, png_set_cHRM_XYZ, (png_structp png_ptr,
+ png_infop info_ptr, double red_X, double red_Y, double red_Z,
+ double green_X, double green_Y, double green_Z, double blue_X,
+ double blue_Y, double blue_Z));
+PNG_FIXED_EXPORT(136, void, png_set_cHRM_fixed, (png_structp png_ptr,
+ png_infop info_ptr, png_fixed_point int_white_x,
+ png_fixed_point int_white_y, png_fixed_point int_red_x,
+ png_fixed_point int_red_y, png_fixed_point int_green_x,
+ png_fixed_point int_green_y, png_fixed_point int_blue_x,
+ png_fixed_point int_blue_y));
+PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_structp png_ptr,
+ png_infop info_ptr, png_fixed_point int_red_X, png_fixed_point int_red_Y,
+ png_fixed_point int_red_Z, png_fixed_point int_green_X,
+ png_fixed_point int_green_Y, png_fixed_point int_green_Z,
+ png_fixed_point int_blue_X, png_fixed_point int_blue_Y,
+ png_fixed_point int_blue_Z));
#endif
#ifdef PNG_gAMA_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_gAMA) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, double *file_gamma));
-#endif
-PNG_EXPORT(png_uint_32,png_get_gAMA_fixed) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_fixed_point *int_file_gamma));
+PNG_FP_EXPORT(137, png_uint_32, png_get_gAMA,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ double *file_gamma));
+PNG_FIXED_EXPORT(138, png_uint_32, png_get_gAMA_fixed,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ png_fixed_point *int_file_gamma));
#endif
#ifdef PNG_gAMA_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(void,png_set_gAMA) PNGARG((png_structp png_ptr,
- png_infop info_ptr, double file_gamma));
-#endif
-PNG_EXPORT(void,png_set_gAMA_fixed) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_fixed_point int_file_gamma));
+PNG_FP_EXPORT(139, void, png_set_gAMA, (png_structp png_ptr,
+ png_infop info_ptr, double file_gamma));
+PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, (png_structp png_ptr,
+ png_infop info_ptr, png_fixed_point int_file_gamma));
#endif
#ifdef PNG_hIST_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_hIST) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_uint_16p *hist));
+PNG_EXPORT(141, png_uint_32, png_get_hIST,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ png_uint_16p *hist));
#endif
#ifdef PNG_hIST_SUPPORTED
-PNG_EXPORT(void,png_set_hIST) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_16p hist));
+PNG_EXPORT(142, void, png_set_hIST, (png_structp png_ptr,
+ png_infop info_ptr, png_const_uint_16p hist));
#endif
-PNG_EXPORT(png_uint_32,png_get_IHDR) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 *width, png_uint_32 *height,
- int *bit_depth, int *color_type, int *interlace_method,
- int *compression_method, int *filter_method));
+PNG_EXPORT(143, png_uint_32, png_get_IHDR,
+ (png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 *width, png_uint_32 *height, int *bit_depth, int *color_type,
+ int *interlace_method, int *compression_method, int *filter_method));
-PNG_EXPORT(void,png_set_IHDR) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth,
- int color_type, int interlace_method, int compression_method,
- int filter_method));
+PNG_EXPORT(144, void, png_set_IHDR,
+ (png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 width, png_uint_32 height, int bit_depth, int color_type,
+ int interlace_method, int compression_method, int filter_method));
#ifdef PNG_oFFs_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_oFFs) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_int_32 *offset_x, png_int_32 *offset_y,
- int *unit_type));
+PNG_EXPORT(145, png_uint_32, png_get_oFFs,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type));
#endif
#ifdef PNG_oFFs_SUPPORTED
-PNG_EXPORT(void,png_set_oFFs) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_int_32 offset_x, png_int_32 offset_y,
- int unit_type));
+PNG_EXPORT(146, void, png_set_oFFs,
+ (png_structp png_ptr, png_infop info_ptr,
+ png_int_32 offset_x, png_int_32 offset_y, int unit_type));
#endif
#ifdef PNG_pCAL_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_pCAL) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_charp *purpose, png_int_32 *X0, png_int_32 *X1,
- int *type, int *nparams, png_charp *units, png_charpp *params));
+PNG_EXPORT(147, png_uint_32, png_get_pCAL,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type,
+ int *nparams,
+ png_charp *units, png_charpp *params));
#endif
#ifdef PNG_pCAL_SUPPORTED
-PNG_EXPORT(void,png_set_pCAL) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_charp purpose, png_int_32 X0, png_int_32 X1,
- int type, int nparams, png_charp units, png_charpp params));
+PNG_EXPORT(148, void, png_set_pCAL, (png_structp png_ptr,
+ png_infop info_ptr,
+ png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type,
+ int nparams, png_const_charp units, png_charpp params));
#endif
#ifdef PNG_pHYs_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_pHYs) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type));
+PNG_EXPORT(149, png_uint_32, png_get_pHYs,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type));
#endif
#ifdef PNG_pHYs_SUPPORTED
-PNG_EXPORT(void,png_set_pHYs) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type));
+PNG_EXPORT(150, void, png_set_pHYs,
+ (png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 res_x, png_uint_32 res_y, int unit_type));
#endif
-PNG_EXPORT(png_uint_32,png_get_PLTE) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_colorp *palette, int *num_palette));
+PNG_EXPORT(151, png_uint_32, png_get_PLTE,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ png_colorp *palette, int *num_palette));
-PNG_EXPORT(void,png_set_PLTE) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_colorp palette, int num_palette));
+PNG_EXPORT(152, void, png_set_PLTE,
+ (png_structp png_ptr, png_infop info_ptr,
+ png_const_colorp palette, int num_palette));
#ifdef PNG_sBIT_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_sBIT) PNGARG((png_const_structp png_ptr,
- png_infop info_ptr, png_color_8p *sig_bit));
+PNG_EXPORT(153, png_uint_32, png_get_sBIT,
+ (png_const_structp png_ptr, png_infop info_ptr,
+ png_color_8p *sig_bit));
#endif
#ifdef PNG_sBIT_SUPPORTED
-PNG_EXPORT(void,png_set_sBIT) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_color_8p sig_bit));
+PNG_EXPORT(154, void, png_set_sBIT,
+ (png_structp png_ptr, png_infop info_ptr, png_const_color_8p sig_bit));
#endif
#ifdef PNG_sRGB_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_sRGB) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, int *intent));
+PNG_EXPORT(155, png_uint_32, png_get_sRGB, (png_const_structp png_ptr,
+ png_const_infop info_ptr, int *file_srgb_intent));
#endif
#ifdef PNG_sRGB_SUPPORTED
-PNG_EXPORT(void,png_set_sRGB) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int intent));
-PNG_EXPORT(void,png_set_sRGB_gAMA_and_cHRM) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int intent));
+PNG_EXPORT(156, void, png_set_sRGB,
+ (png_structp png_ptr, png_infop info_ptr, int srgb_intent));
+PNG_EXPORT(157, void, png_set_sRGB_gAMA_and_cHRM, (png_structp png_ptr,
+ png_infop info_ptr, int srgb_intent));
#endif
#ifdef PNG_iCCP_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_iCCP) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_charpp name, int *compression_type,
- png_charpp profile, png_uint_32 *proflen));
- /* Note to maintainer: profile should be png_bytepp */
+PNG_EXPORT(158, png_uint_32, png_get_iCCP,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ png_charpp name, int *compression_type, png_bytepp profile,
+ png_uint_32 *proflen));
#endif
#ifdef PNG_iCCP_SUPPORTED
-PNG_EXPORT(void,png_set_iCCP) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_charp name, int compression_type,
- png_charp profile, png_uint_32 proflen));
- /* Note to maintainer: profile should be png_bytep */
+PNG_EXPORT(159, void, png_set_iCCP,
+ (png_structp png_ptr, png_infop info_ptr,
+ png_const_charp name, int compression_type, png_const_bytep profile,
+ png_uint_32 proflen));
#endif
#ifdef PNG_sPLT_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_sPLT) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_sPLT_tpp entries));
+PNG_EXPORT(160, png_uint_32, png_get_sPLT,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ png_sPLT_tpp entries));
#endif
#ifdef PNG_sPLT_SUPPORTED
-PNG_EXPORT(void,png_set_sPLT) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_sPLT_tp entries, int nentries));
+PNG_EXPORT(161, void, png_set_sPLT,
+ (png_structp png_ptr, png_infop info_ptr,
+ png_const_sPLT_tp entries, int nentries));
#endif
#ifdef PNG_TEXT_SUPPORTED
/* png_get_text also returns the number of text chunks in *num_text */
-PNG_EXPORT(png_uint_32,png_get_text) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_textp *text_ptr, int *num_text));
+PNG_EXPORT(162, png_uint_32, png_get_text,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ png_textp *text_ptr, int *num_text));
#endif
/* Note while png_set_text() will accept a structure whose text,
@@ -2424,111 +2276,123 @@
*/
#ifdef PNG_TEXT_SUPPORTED
-PNG_EXPORT(void,png_set_text) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_textp text_ptr, int num_text));
+PNG_EXPORT(163, void, png_set_text,
+ (png_structp png_ptr, png_infop info_ptr,
+ png_const_textp text_ptr, int num_text));
#endif
#ifdef PNG_tIME_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_tIME) PNGARG((png_const_structp png_ptr,
- png_infop info_ptr, png_timep *mod_time));
+PNG_EXPORT(164, png_uint_32, png_get_tIME,
+ (png_const_structp png_ptr, png_infop info_ptr, png_timep *mod_time));
#endif
#ifdef PNG_tIME_SUPPORTED
-PNG_EXPORT(void,png_set_tIME) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_timep mod_time));
+PNG_EXPORT(165, void, png_set_tIME,
+ (png_structp png_ptr, png_infop info_ptr, png_const_timep mod_time));
#endif
#ifdef PNG_tRNS_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_tRNS) PNGARG((png_const_structp png_ptr,
- png_infop info_ptr, png_bytep *trans_alpha, int *num_trans,
- png_color_16p *trans_color));
+PNG_EXPORT(166, png_uint_32, png_get_tRNS,
+ (png_const_structp png_ptr, png_infop info_ptr,
+ png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color));
#endif
#ifdef PNG_tRNS_SUPPORTED
-PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_bytep trans_alpha, int num_trans,
- png_color_16p trans_color));
-#endif
-
-#ifdef PNG_tRNS_SUPPORTED
+PNG_EXPORT(167, void, png_set_tRNS,
+ (png_structp png_ptr, png_infop info_ptr,
+ png_const_bytep trans_alpha, int num_trans,
+ png_const_color_16p trans_color));
#endif
#ifdef PNG_sCAL_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_sCAL) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, int *unit, double *width, double *height));
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_sCAL_s) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, int *unit, png_charpp swidth, png_charpp sheight));
+PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ int *unit, double *width, double *height));
+#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+/* NOTE: this API is currently implemented using floating point arithmetic,
+ * consequently it can only be used on systems with floating point support.
+ * In any case the range of values supported by png_fixed_point is small and it
+ * is highly recommended that png_get_sCAL_s be used instead.
+ */
+PNG_FIXED_EXPORT(214, png_uint_32, png_get_sCAL_fixed,
+ (png_structp png_ptr, png_const_infop info_ptr, int *unit,
+ png_fixed_point *width,
+ png_fixed_point *height));
#endif
-#endif
+PNG_EXPORT(169, png_uint_32, png_get_sCAL_s,
+ (png_const_structp png_ptr, png_const_infop info_ptr,
+ int *unit, png_charpp swidth, png_charpp sheight));
+
+PNG_FP_EXPORT(170, void, png_set_sCAL,
+ (png_structp png_ptr, png_infop info_ptr,
+ int unit, double width, double height));
+PNG_FIXED_EXPORT(213, void, png_set_sCAL_fixed, (png_structp png_ptr,
+ png_infop info_ptr, int unit, png_fixed_point width,
+ png_fixed_point height));
+PNG_EXPORT(171, void, png_set_sCAL_s,
+ (png_structp png_ptr, png_infop info_ptr,
+ int unit, png_const_charp swidth, png_const_charp sheight));
#endif /* PNG_sCAL_SUPPORTED */
-#ifdef PNG_sCAL_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXPORT(void,png_set_sCAL) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int unit, double width, double height));
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
-PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int unit, png_charp swidth, png_charp sheight));
-#endif
-#endif
-#endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */
-
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
/* Provide a list of chunks and how they are to be handled, if the built-in
handling or default unknown chunk handling is not desired. Any chunks not
listed will be handled in the default manner. The IHDR and IEND chunks
- must not be listed.
- keep = 0: follow default behaviour
- = 1: do not keep
- = 2: keep only if safe-to-copy
- = 3: keep even if unsafe-to-copy
+ must not be listed. Because this turns off the default handling for chunks
+ that would otherwise be recognized the behavior of libpng transformations may
+ well become incorrect!
+ keep = 0: PNG_HANDLE_CHUNK_AS_DEFAULT: follow default behavior
+ = 1: PNG_HANDLE_CHUNK_NEVER: do not keep
+ = 2: PNG_HANDLE_CHUNK_IF_SAFE: keep only if safe-to-copy
+ = 3: PNG_HANDLE_CHUNK_ALWAYS: keep even if unsafe-to-copy
*/
-PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp
- png_ptr, int keep, png_bytep chunk_list, int num_chunks));
-PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep
- chunk_name));
+PNG_EXPORT(172, void, png_set_keep_unknown_chunks,
+ (png_structp png_ptr, int keep,
+ png_const_bytep chunk_list, int num_chunks));
+
+/* The handling code is returned; the result is therefore true (non-zero) if
+ * special handling is required, false for the default handling.
+ */
+PNG_EXPORT(173, int, png_handle_as_unknown, (png_structp png_ptr,
+ png_const_bytep chunk_name));
#endif
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
-PNG_EXPORT(void, png_set_unknown_chunks) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns));
-PNG_EXPORT(void, png_set_unknown_chunk_location)
- PNGARG((png_structp png_ptr, png_infop info_ptr, int chunk, int location));
-PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_const_structp
- png_ptr, png_const_infop info_ptr, png_unknown_chunkpp entries));
+PNG_EXPORT(174, void, png_set_unknown_chunks, (png_structp png_ptr,
+ png_infop info_ptr, png_const_unknown_chunkp unknowns,
+ int num_unknowns));
+PNG_EXPORT(175, void, png_set_unknown_chunk_location,
+ (png_structp png_ptr, png_infop info_ptr, int chunk, int location));
+PNG_EXPORT(176, int, png_get_unknown_chunks, (png_const_structp png_ptr,
+ png_const_infop info_ptr, png_unknown_chunkpp entries));
#endif
/* Png_free_data() will turn off the "valid" flag for anything it frees.
* If you need to turn it off for a chunk that your application has freed,
* you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK);
*/
-PNG_EXPORT(void, png_set_invalid) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int mask));
+PNG_EXPORT(177, void, png_set_invalid,
+ (png_structp png_ptr, png_infop info_ptr, int mask));
#ifdef PNG_INFO_IMAGE_SUPPORTED
/* The "params" pointer is currently not used and is for future expansion. */
-PNG_EXPORT(void, png_read_png) PNGARG((png_structp png_ptr,
- png_infop info_ptr,
- int transforms,
- png_voidp params));
-PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
- png_infop info_ptr,
- int transforms,
- png_voidp params));
+PNG_EXPORT(178, void, png_read_png, (png_structp png_ptr, png_infop info_ptr,
+ int transforms, png_voidp params));
+PNG_EXPORT(179, void, png_write_png, (png_structp png_ptr, png_infop info_ptr,
+ int transforms, png_voidp params));
#endif
-PNG_EXPORT(png_charp,png_get_copyright) PNGARG((png_const_structp png_ptr));
-PNG_EXPORT(png_charp,png_get_header_ver) PNGARG((png_const_structp png_ptr));
-PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_const_structp
- png_ptr));
-PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_const_structp png_ptr));
+PNG_EXPORT(180, png_const_charp, png_get_copyright,
+ (png_const_structp png_ptr));
+PNG_EXPORT(181, png_const_charp, png_get_header_ver,
+ (png_const_structp png_ptr));
+PNG_EXPORT(182, png_const_charp, png_get_header_version,
+ (png_const_structp png_ptr));
+PNG_EXPORT(183, png_const_charp, png_get_libpng_ver,
+ (png_const_structp png_ptr));
#ifdef PNG_MNG_FEATURES_SUPPORTED
-PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
- png_ptr, png_uint_32 mng_features_permitted));
+PNG_EXPORT(184, png_uint_32, png_permit_mng_features, (png_structp png_ptr,
+ png_uint_32 mng_features_permitted));
#endif
/* For use in png_set_keep_unknown, added to version 1.2.6 */
@@ -2541,75 +2405,144 @@
* messages before passing them to the error or warning handler.
*/
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
-PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
- png_ptr, png_uint_32 strip_mode));
+PNG_EXPORT(185, void, png_set_strip_error_numbers,
+ (png_structp png_ptr,
+ png_uint_32 strip_mode));
#endif
/* Added in libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
-PNG_EXPORT(void,png_set_user_limits) PNGARG((png_structp
- png_ptr, png_uint_32 user_width_max, png_uint_32 user_height_max));
-PNG_EXPORT(png_uint_32,png_get_user_width_max) PNGARG((png_const_structp
- png_ptr));
-PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_const_structp
- png_ptr));
+PNG_EXPORT(186, void, png_set_user_limits, (png_structp png_ptr,
+ png_uint_32 user_width_max, png_uint_32 user_height_max));
+PNG_EXPORT(187, png_uint_32, png_get_user_width_max,
+ (png_const_structp png_ptr));
+PNG_EXPORT(188, png_uint_32, png_get_user_height_max,
+ (png_const_structp png_ptr));
/* Added in libpng-1.4.0 */
-PNG_EXPORT(void,png_set_chunk_cache_max) PNGARG((png_structp
- png_ptr, png_uint_32 user_chunk_cache_max));
-PNG_EXPORT(png_uint_32,png_get_chunk_cache_max)
- PNGARG((png_const_structp png_ptr));
+PNG_EXPORT(189, void, png_set_chunk_cache_max, (png_structp png_ptr,
+ png_uint_32 user_chunk_cache_max));
+PNG_EXPORT(190, png_uint_32, png_get_chunk_cache_max,
+ (png_const_structp png_ptr));
/* Added in libpng-1.4.1 */
-PNG_EXPORT(void,png_set_chunk_malloc_max) PNGARG((png_structp
- png_ptr, png_alloc_size_t user_chunk_cache_max));
-PNG_EXPORT(png_alloc_size_t,png_get_chunk_malloc_max)
- PNGARG((png_const_structp png_ptr));
+PNG_EXPORT(191, void, png_set_chunk_malloc_max, (png_structp png_ptr,
+ png_alloc_size_t user_chunk_cache_max));
+PNG_EXPORT(192, png_alloc_size_t, png_get_chunk_malloc_max,
+ (png_const_structp png_ptr));
#endif
-#if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED)
-PNG_EXPORT(png_uint_32,png_get_pixels_per_inch)
- PNGARG((png_const_structp png_ptr, png_const_infop info_ptr));
+#if defined(PNG_INCH_CONVERSIONS_SUPPORTED)
+PNG_EXPORT(193, png_uint_32, png_get_pixels_per_inch,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
-PNG_EXPORT(png_uint_32,png_get_x_pixels_per_inch)
- PNGARG((png_const_structp png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(194, png_uint_32, png_get_x_pixels_per_inch,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
-PNG_EXPORT(png_uint_32,png_get_y_pixels_per_inch)
- PNGARG((png_const_structp png_ptr, png_const_infop info_ptr));
+PNG_EXPORT(195, png_uint_32, png_get_y_pixels_per_inch,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
-PNG_EXPORT(float,png_get_x_offset_inches) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr));
+PNG_FP_EXPORT(196, float, png_get_x_offset_inches,
+ (png_const_structp png_ptr, png_const_infop info_ptr));
+#ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */
+PNG_FIXED_EXPORT(211, png_fixed_point, png_get_x_offset_inches_fixed,
+ (png_structp png_ptr, png_const_infop info_ptr));
+#endif
-PNG_EXPORT(float,png_get_y_offset_inches) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr));
+PNG_FP_EXPORT(197, float, png_get_y_offset_inches, (png_const_structp png_ptr,
+ png_const_infop info_ptr));
+#ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */
+PNG_FIXED_EXPORT(212, png_fixed_point, png_get_y_offset_inches_fixed,
+ (png_structp png_ptr, png_const_infop info_ptr));
+#endif
-#ifdef PNG_pHYs_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_pHYs_dpi) PNGARG((png_const_structp png_ptr,
- png_const_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y,
- int *unit_type));
-#endif /* PNG_pHYs_SUPPORTED */
-#endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */
+# ifdef PNG_pHYs_SUPPORTED
+PNG_EXPORT(198, png_uint_32, png_get_pHYs_dpi, (png_const_structp png_ptr,
+ png_const_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y,
+ int *unit_type));
+# endif /* PNG_pHYs_SUPPORTED */
+#endif /* PNG_INCH_CONVERSIONS_SUPPORTED */
/* Added in libpng-1.4.0 */
#ifdef PNG_IO_STATE_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_io_state) PNGARG((png_const_structp png_ptr));
+PNG_EXPORT(199, png_uint_32, png_get_io_state, (png_structp png_ptr));
-PNG_EXPORT(png_bytep,png_get_io_chunk_name)
- PNGARG((png_structp png_ptr));
+PNG_EXPORTA(200, png_const_bytep, png_get_io_chunk_name,
+ (png_structp png_ptr), PNG_DEPRECATED);
+PNG_EXPORT(216, png_uint_32, png_get_io_chunk_type,
+ (png_const_structp png_ptr));
/* The flags returned by png_get_io_state() are the following: */
-#define PNG_IO_NONE 0x0000 /* no I/O at this moment */
-#define PNG_IO_READING 0x0001 /* currently reading */
-#define PNG_IO_WRITING 0x0002 /* currently writing */
-#define PNG_IO_SIGNATURE 0x0010 /* currently at the file signature */
-#define PNG_IO_CHUNK_HDR 0x0020 /* currently at the chunk header */
-#define PNG_IO_CHUNK_DATA 0x0040 /* currently at the chunk data */
-#define PNG_IO_CHUNK_CRC 0x0080 /* currently at the chunk crc */
-#define PNG_IO_MASK_OP 0x000f /* current operation: reading/writing */
-#define PNG_IO_MASK_LOC 0x00f0 /* current location: sig/hdr/data/crc */
+# define PNG_IO_NONE 0x0000 /* no I/O at this moment */
+# define PNG_IO_READING 0x0001 /* currently reading */
+# define PNG_IO_WRITING 0x0002 /* currently writing */
+# define PNG_IO_SIGNATURE 0x0010 /* currently at the file signature */
+# define PNG_IO_CHUNK_HDR 0x0020 /* currently at the chunk header */
+# define PNG_IO_CHUNK_DATA 0x0040 /* currently at the chunk data */
+# define PNG_IO_CHUNK_CRC 0x0080 /* currently at the chunk crc */
+# define PNG_IO_MASK_OP 0x000f /* current operation: reading/writing */
+# define PNG_IO_MASK_LOC 0x00f0 /* current location: sig/hdr/data/crc */
#endif /* ?PNG_IO_STATE_SUPPORTED */
-/* Maintainer: Put new public prototypes here ^, in libpng.3, and project
- * defs
+/* Interlace support. The following macros are always defined so that if
+ * libpng interlace handling is turned off the macros may be used to handle
+ * interlaced images within the application.
*/
+#define PNG_INTERLACE_ADAM7_PASSES 7
+
+/* Two macros to return the first row and first column of the original,
+ * full, image which appears in a given pass. 'pass' is in the range 0
+ * to 6 and the result is in the range 0 to 7.
+ */
+#define PNG_PASS_START_ROW(pass) (((1&~(pass))<<(3-((pass)>>1)))&7)
+#define PNG_PASS_START_COL(pass) (((1& (pass))<<(3-(((pass)+1)>>1)))&7)
+
+/* A macro to return the offset between pixels in the output row for a pair of
+ * pixels in the input - effectively the inverse of the 'COL_SHIFT' macro that
+ * follows. Note that ROW_OFFSET is the offset from one row to the next whereas
+ * COL_OFFSET is from one column to the next, within a row.
+ */
+#define PNG_PASS_ROW_OFFSET(pass) ((pass)>2?(8>>(((pass)-1)>>1)):8)
+#define PNG_PASS_COL_OFFSET(pass) (1<<((7-(pass))>>1))
+
+/* Two macros to help evaluate the number of rows or columns in each
+ * pass. This is expressed as a shift - effectively log2 of the number or
+ * rows or columns in each 8x8 tile of the original image.
+ */
+#define PNG_PASS_ROW_SHIFT(pass) ((pass)>2?(8-(pass))>>1:3)
+#define PNG_PASS_COL_SHIFT(pass) ((pass)>1?(7-(pass))>>1:3)
+
+/* Hence two macros to determine the number of rows or columns in a given
+ * pass of an image given its height or width. In fact these macros may
+ * return non-zero even though the sub-image is empty, because the other
+ * dimension may be empty for a small image.
+ */
+#define PNG_PASS_ROWS(height, pass) (((height)+(((1<<PNG_PASS_ROW_SHIFT(pass))\
+ -1)-PNG_PASS_START_ROW(pass)))>>PNG_PASS_ROW_SHIFT(pass))
+#define PNG_PASS_COLS(width, pass) (((width)+(((1<<PNG_PASS_COL_SHIFT(pass))\
+ -1)-PNG_PASS_START_COL(pass)))>>PNG_PASS_COL_SHIFT(pass))
+
+/* For the reader row callbacks (both progressive and sequential) it is
+ * necessary to find the row in the output image given a row in an interlaced
+ * image, so two more macros:
+ */
+#define PNG_ROW_FROM_PASS_ROW(yIn, pass) \
+ (((yIn)<<PNG_PASS_ROW_SHIFT(pass))+PNG_PASS_START_ROW(pass))
+#define PNG_COL_FROM_PASS_COL(xIn, pass) \
+ (((xIn)<<PNG_PASS_COL_SHIFT(pass))+PNG_PASS_START_COL(pass))
+
+/* Two macros which return a boolean (0 or 1) saying whether the given row
+ * or column is in a particular pass. These use a common utility macro that
+ * returns a mask for a given pass - the offset 'off' selects the row or
+ * column version. The mask has the appropriate bit set for each column in
+ * the tile.
+ */
+#define PNG_PASS_MASK(pass,off) ( \
+ ((0x110145AF>>(((7-(off))-(pass))<<2)) & 0xF) | \
+ ((0x01145AF0>>(((7-(off))-(pass))<<2)) & 0xF0))
+
+#define PNG_ROW_IN_INTERLACE_PASS(y, pass) \
+ ((PNG_PASS_MASK(pass,0) >> ((y)&7)) & 1)
+#define PNG_COL_IN_INTERLACE_PASS(x, pass) \
+ ((PNG_PASS_MASK(pass,1) >> ((x)&7)) & 1)
#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
/* With these routines we avoid an integer divide, which will be slower on
@@ -2624,35 +2557,62 @@
* [Optimized code by Greg Roelofs and Mark Adler...blame us for bugs. :-) ]
*/
- /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */
+ /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */
# define png_composite(composite, fg, alpha, bg) \
{ png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) \
* (png_uint_16)(alpha) \
+ (png_uint_16)(bg)*(png_uint_16)(255 \
- - (png_uint_16)(alpha)) + (png_uint_16)128); \
+ - (png_uint_16)(alpha)) + 128); \
(composite) = (png_byte)((temp + (temp >> 8)) >> 8); }
# define png_composite_16(composite, fg, alpha, bg) \
{ png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) \
* (png_uint_32)(alpha) \
- + (png_uint_32)(bg)*(png_uint_32)(65535L \
- - (png_uint_32)(alpha)) + (png_uint_32)32768L); \
+ + (png_uint_32)(bg)*(65535 \
+ - (png_uint_32)(alpha)) + 32768); \
(composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); }
#else /* Standard method using integer division */
-# define png_composite(composite, fg, alpha, bg) \
- (composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) + \
- (png_uint_16)(bg) * (png_uint_16)(255 - (png_uint_16)(alpha)) + \
- (png_uint_16)127) / 255)
+# define png_composite(composite, fg, alpha, bg) \
+ (composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) + \
+ (png_uint_16)(bg) * (png_uint_16)(255 - (png_uint_16)(alpha)) + \
+ 127) / 255)
# define png_composite_16(composite, fg, alpha, bg) \
(composite) = (png_uint_16)(((png_uint_32)(fg) * (png_uint_32)(alpha) + \
- (png_uint_32)(bg)*(png_uint_32)(65535L - (png_uint_32)(alpha)) + \
- (png_uint_32)32767) / (png_uint_32)65535L)
+ (png_uint_32)(bg)*(png_uint_32)(65535 - (png_uint_32)(alpha)) + \
+ 32767) / 65535)
#endif /* PNG_READ_COMPOSITE_NODIV_SUPPORTED */
+#ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED
+PNG_EXPORT(201, png_uint_32, png_get_uint_32, (png_const_bytep buf));
+PNG_EXPORT(202, png_uint_16, png_get_uint_16, (png_const_bytep buf));
+PNG_EXPORT(203, png_int_32, png_get_int_32, (png_const_bytep buf));
+#endif
+
+PNG_EXPORT(204, png_uint_32, png_get_uint_31, (png_structp png_ptr,
+ png_const_bytep buf));
+/* No png_get_int_16 -- may be added if there's a real need for it. */
+
+/* Place a 32-bit number into a buffer in PNG byte order (big-endian). */
+#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED
+PNG_EXPORT(205, void, png_save_uint_32, (png_bytep buf, png_uint_32 i));
+#endif
+#ifdef PNG_SAVE_INT_32_SUPPORTED
+PNG_EXPORT(206, void, png_save_int_32, (png_bytep buf, png_int_32 i));
+#endif
+
+/* Place a 16-bit number into a buffer in PNG byte order.
+ * The parameter is declared unsigned int, not png_uint_16,
+ * just to avoid potential problems on pre-ANSI C compilers.
+ */
+#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED
+PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
+/* No png_save_int_16 -- may be added if there's a real need for it. */
+#endif
+
#ifdef PNG_USE_READ_MACROS
/* Inline macros to do direct reads of bytes from the input buffer.
* The png_get_int_32() routine assumes we are using two's complement
@@ -2664,61 +2624,31 @@
((png_uint_32)(*((buf) + 2)) << 8) + \
((png_uint_32)(*((buf) + 3))))
- /* The following definition introduces an API incompatibility (but not
- * an ABI incompatibility) with libpng-1.4.0 through 1.4.4. Prior to
- * libpng-1.4.5 the macro, which is used by default, returned (incorrectly)
- * a (png_uint_32), while the function, if used instead, correctly returned
- * a (png_uint_16).
- *
- * Libpng versions 1.0.x and 1.2.x only used a function so are not affected
- * by this potential API incompatibility between macros.
- */
+ /* From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
+ * function) incorrectly returned a value of type png_uint_32.
+ */
# define png_get_uint_16(buf) \
((png_uint_16) \
- (((unsigned int)(*(buf)) << 8) + \
- ((unsigned int)(*((buf) + 1)))))
+ (((unsigned int)(*(buf)) << 8) + \
+ ((unsigned int)(*((buf) + 1)))))
# define png_get_int_32(buf) \
((png_int_32)((*(buf) & 0x80) \
? -((png_int_32)((png_get_uint_32(buf) ^ 0xffffffffL) + 1)) \
: (png_int_32)png_get_uint_32(buf)))
-#else
-PNG_EXPORT(png_uint_32,png_get_uint_32) PNGARG((png_bytep buf));
-PNG_EXPORT(png_uint_16,png_get_uint_16) PNGARG((png_bytep buf));
-#ifdef PNG_GET_INT_32_SUPPORTED
-PNG_EXPORT(png_int_32,png_get_int_32) PNGARG((png_bytep buf));
#endif
+
+/* Maintainer: Put new public prototypes here ^, in libpng.3, and project
+ * defs
+ */
+
+/* The last ordinal number (this is the *last* one already used; the next
+ * one to use is one more than this.) Maintainer, remember to add an entry to
+ * scripts/symbols.def as well.
+ */
+#ifdef PNG_EXPORT_LAST_ORDINAL
+ PNG_EXPORT_LAST_ORDINAL(233);
#endif
-PNG_EXPORT(png_uint_32,png_get_uint_31)
- PNGARG((png_structp png_ptr, png_bytep buf));
-/* No png_get_int_16 -- may be added if there's a real need for it. */
-
-/* Place a 32-bit number into a buffer in PNG byte order (big-endian). */
-PNG_EXPORT(void,png_save_uint_32)
- PNGARG((png_bytep buf, png_uint_32 i));
-PNG_EXPORT(void,png_save_int_32)
- PNGARG((png_bytep buf, png_int_32 i));
-
-/* Place a 16-bit number into a buffer in PNG byte order.
- * The parameter is declared unsigned int, not png_uint_16,
- * just to avoid potential problems on pre-ANSI C compilers.
- */
-PNG_EXPORT(void,png_save_uint_16)
- PNGARG((png_bytep buf, unsigned int i));
-/* No png_save_int_16 -- may be added if there's a real need for it. */
-
-/* ************************************************************************* */
-
-/* Various modes of operation. Note that after an init, mode is set to
- * zero automatically when the structure is created.
- */
-#define PNG_HAVE_IHDR 0x01
-#define PNG_HAVE_PLTE 0x02
-#define PNG_HAVE_IDAT 0x04
-#define PNG_AFTER_IDAT 0x08 /* Have complete zlib datastream */
-#define PNG_HAVE_IEND 0x10
-#define PNG_HAVE_gAMA 0x20
-#define PNG_HAVE_cHRM 0x40
#ifdef __cplusplus
}
diff --git a/pngconf.h b/pngconf.h
index 5453cfd..70c9b84 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,9 +1,9 @@
/* pngconf.h - machine configurable file for libpng
*
- * libpng version 1.4.9beta01 - July 8, 2011
- * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * libpng version 1.5.10beta01 - February 19, 2012
+ *
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -22,302 +22,57 @@
#ifndef PNGCONF_H
#define PNGCONF_H
-#ifndef PNG_NO_LIMITS_H
-# include <limits.h>
-#endif
-
-/* Added at libpng-1.2.9 */
-
-/* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure"
- * script.
+#ifndef PNG_BUILDING_SYMBOL_TABLE
+/* PNG_NO_LIMITS_H may be used to turn off the use of the standard C
+ * definition file for machine specific limits, this may impact the
+ * correctness of the definitons below (see uses of INT_MAX).
*/
-#ifdef PNG_CONFIGURE_LIBPNG
-# ifdef HAVE_CONFIG_H
-# include "config.h"
-# endif
-#endif
-
-/*
- * Added at libpng-1.2.8
- *
- * PNG_USER_CONFIG has to be defined on the compiler command line. This
- * includes the resource compiler for Windows DLL configurations.
- */
-#ifdef PNG_USER_CONFIG
-# include "pngusr.h"
-# ifndef PNG_USER_PRIVATEBUILD
-# define PNG_USER_PRIVATEBUILD
-# endif
-#endif
-
-/*
- * If you create a private DLL you should define in "pngusr.h" the following:
- * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
- * the DLL was built>
- * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
- * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
- * distinguish your DLL from those of the official release. These
- * correspond to the trailing letters that come after the version
- * number and must match your private DLL name>
- * e.g. // private DLL "libpng14gx.dll"
- * #define PNG_USER_DLLFNAME_POSTFIX "gx"
- *
- * The following macros are also at your disposal if you want to complete the
- * DLL VERSIONINFO structure.
- * - PNG_USER_VERSIONINFO_COMMENTS
- * - PNG_USER_VERSIONINFO_COMPANYNAME
- * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
- */
-
-#ifdef __STDC__
-# ifdef SPECIALBUILD
-# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
- are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
+# ifndef PNG_NO_LIMITS_H
+# include <limits.h>
# endif
-# ifdef PRIVATEBUILD
-# pragma message("PRIVATEBUILD is deprecated.\
- Use PNG_USER_PRIVATEBUILD instead.")
-# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
-# endif
-#endif /* __STDC__ */
-
-/* End of material added to libpng-1.2.8 */
-
-/* Added at libpng-1.4.6 */
-#ifndef PNG_UNUSED
-/* Unused formal parameter warnings are silenced using the following macro
- * which is expected to have no bad effects on performance (optimizing
- * compilers will probably remove it entirely). Note that if you replace
- * it with something other than whitespace, you must include the terminating
- * semicolon.
+/* For the memory copy APIs (i.e. the standard definitions of these),
+ * because this file defines png_memcpy and so on the base APIs must
+ * be defined here.
*/
-# define PNG_UNUSED(param) (void)param;
-#endif
-/* End of material added to libpng-1.4.6 */
-
-#ifndef PNG_VERSION_INFO_ONLY
-
-/* This is the size of the compression buffer, and thus the size of
- * an IDAT chunk. Make this whatever size you feel is best for your
- * machine. One of these will be allocated per png_struct. When this
- * is full, it writes the data to the disk, and does some other
- * calculations. Making this an extremely small size will slow
- * the library down, but you may want to experiment to determine
- * where it becomes significant, if you are concerned with memory
- * usage. Note that zlib allocates at least 32Kb also. For readers,
- * this describes the size of the buffer available to read the data in.
- * Unless this gets smaller than the size of a row (compressed),
- * it should not make much difference how big this is.
- */
-
-#ifndef PNG_ZBUF_SIZE
-# define PNG_ZBUF_SIZE 8192
-#endif
-
-/* Enable if you want a write-only libpng */
-
-#ifndef PNG_NO_READ_SUPPORTED
-# define PNG_READ_SUPPORTED
-#endif
-
-/* Enable if you want a read-only libpng */
-
-#ifndef PNG_NO_WRITE_SUPPORTED
-# define PNG_WRITE_SUPPORTED
-#endif
-
-/* Enabled in 1.4.0. */
-#ifdef PNG_ALLOW_BENIGN_ERRORS
-# define png_benign_error png_warning
-# define png_chunk_benign_error png_chunk_warning
-#else
-# ifndef PNG_BENIGN_ERRORS_SUPPORTED
-# define png_benign_error png_error
-# define png_chunk_benign_error png_chunk_error
-# endif
-#endif
-
-/* Added at libpng version 1.4.0 */
-#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
-# define PNG_WARNINGS_SUPPORTED
-#endif
-
-/* Added at libpng version 1.4.0 */
-#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
-# define PNG_ERROR_TEXT_SUPPORTED
-#endif
-
-/* Added at libpng version 1.4.0 */
-#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
-# define PNG_CHECK_cHRM_SUPPORTED
-#endif
-
-/* Added at libpng version 1.4.0 */
-#if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
-# define PNG_ALIGNED_MEMORY_SUPPORTED
-#endif
-
-/* Enabled by default in 1.2.0. You can disable this if you don't need to
- support PNGs that are embedded in MNG datastreams */
-#ifndef PNG_NO_MNG_FEATURES
-# ifndef PNG_MNG_FEATURES_SUPPORTED
-# define PNG_MNG_FEATURES_SUPPORTED
-# endif
-#endif
-
-/* Added at libpng version 1.4.0 */
-#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
-# ifndef PNG_FLOATING_POINT_SUPPORTED
-# define PNG_FLOATING_POINT_SUPPORTED
-# endif
-#endif
-
-/* Added at libpng-1.4.0beta49 for testing (this test is no longer used
- in libpng and png_calloc() is always present)
- */
-#define PNG_CALLOC_SUPPORTED
-
-/* If you are running on a machine where you cannot allocate more
- * than 64K of memory at once, uncomment this. While libpng will not
- * normally need that much memory in a chunk (unless you load up a very
- * large file), zlib needs to know how big of a chunk it can use, and
- * libpng thus makes sure to check any memory allocation to verify it
- * will fit into memory.
-#define PNG_MAX_MALLOC_64K
- */
-#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
-# define PNG_MAX_MALLOC_64K
-#endif
-
-/* Special munging to support doing things the 'cygwin' way:
- * 'Normal' png-on-win32 defines/defaults:
- * PNG_BUILD_DLL -- building dll
- * PNG_USE_DLL -- building an application, linking to dll
- * (no define) -- building static library, or building an
- * application and linking to the static lib
- * 'Cygwin' defines/defaults:
- * PNG_BUILD_DLL -- (ignored) building the dll
- * (no define) -- (ignored) building an application, linking to the dll
- * PNG_STATIC -- (ignored) building the static lib, or building an
- * application that links to the static lib.
- * ALL_STATIC -- (ignored) building various static libs, or building an
- * application that links to the static libs.
- * Thus,
- * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
- * this bit of #ifdefs will define the 'correct' config variables based on
- * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
- * unnecessary.
- *
- * Also, the precedence order is:
- * ALL_STATIC (since we can't #undef something outside our namespace)
- * PNG_BUILD_DLL
- * PNG_STATIC
- * (nothing) == PNG_USE_DLL
- *
- * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
- * of auto-import in binutils, we no longer need to worry about
- * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
- * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
- * to __declspec() stuff. However, we DO need to worry about
- * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
- * such as CONSOLE_IO.
- */
-#ifdef __CYGWIN__
-# ifdef ALL_STATIC
-# ifdef PNG_BUILD_DLL
-# undef PNG_BUILD_DLL
-# endif
-# ifdef PNG_USE_DLL
-# undef PNG_USE_DLL
-# endif
-# ifdef PNG_DLL
-# undef PNG_DLL
-# endif
-# ifndef PNG_STATIC
-# define PNG_STATIC
-# endif
+# ifdef BSD
+# include <strings.h>
# else
-# ifdef PNG_BUILD_DLL
-# ifdef PNG_STATIC
-# undef PNG_STATIC
-# endif
-# ifdef PNG_USE_DLL
-# undef PNG_USE_DLL
-# endif
-# ifndef PNG_DLL
-# define PNG_DLL
-# endif
-# else
-# ifdef PNG_STATIC
-# ifdef PNG_USE_DLL
-# undef PNG_USE_DLL
-# endif
-# ifdef PNG_DLL
-# undef PNG_DLL
-# endif
-# else
-# ifndef PNG_USE_DLL
-# define PNG_USE_DLL
-# endif
-# ifndef PNG_DLL
-# define PNG_DLL
-# endif
-# endif
-# endif
+# include <string.h>
# endif
-#endif
-/* This protects us against compilers that run on a windowing system
- * and thus don't have or would rather us not use the stdio types:
- * stdin, stdout, and stderr. The only one currently used is stderr
- * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
- * prevent these from being compiled and used. #defining PNG_NO_STDIO
- * will also prevent these, plus will prevent the entire set of stdio
- * macros and functions (FILE *, printf, etc.) from being compiled and used,
- * unless (PNG_DEBUG > 0) has been #defined.
- *
- * #define PNG_NO_CONSOLE_IO
- * #define PNG_NO_STDIO
+/* For png_FILE_p - this provides the standard definition of a
+ * FILE
*/
-
-#ifdef _WIN32_WCE
-# define PNG_NO_CONSOLE_IO
-# define PNG_NO_STDIO
-# define PNG_NO_TIME_RFC1123
-# ifdef PNG_DEBUG
-# undef PNG_DEBUG
-# endif
-#endif
-
-#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
-# define PNG_STDIO_SUPPORTED
-#endif
-
-#ifdef PNG_BUILD_DLL
-# if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
-# define PNG_NO_CONSOLE_IO
-# endif
-#endif
-
-# ifdef PNG_NO_STDIO
-# ifndef PNG_NO_CONSOLE_IO
-# define PNG_NO_CONSOLE_IO
-# endif
-# ifdef PNG_DEBUG
-# if (PNG_DEBUG > 0)
-# include <stdio.h>
-# endif
-# endif
-# else
+# ifdef PNG_STDIO_SUPPORTED
# include <stdio.h>
# endif
-
-#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
-# define PNG_CONSOLE_IO_SUPPORTED
#endif
-/* This macro protects us against machines that don't have function
+/* This controls optimization of the reading of 16 and 32 bit values
+ * from PNG files. It can be set on a per-app-file basis - it
+ * just changes whether a macro is used to the function is called.
+ * The library builder sets the default, if read functions are not
+ * built into the library the macro implementation is forced on.
+ */
+#ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED
+# define PNG_USE_READ_MACROS
+#endif
+#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
+# if PNG_DEFAULT_READ_MACROS
+# define PNG_USE_READ_MACROS
+# endif
+#endif
+
+/* COMPILER SPECIFIC OPTIONS.
+ *
+ * These options are provided so that a variety of difficult compilers
+ * can be used. Some are fixed at build time (e.g. PNG_API_RULE
+ * below) but still have compiler specific implementations, others
+ * may be changed on a per-file basis when compiling against libpng.
+ */
+
+/* The PNGARG macro protects us against machines that don't have function
* prototypes (ie K&R style headers). If your compiler does not handle
* function prototypes, define this macro and use the included ansi2knr.
* I've always been able to use _NO_PROTO as the indicator, but you may
@@ -326,142 +81,346 @@
*/
#ifndef PNGARG
-#ifdef OF /* zlib prototype munger */
-# define PNGARG(arglist) OF(arglist)
-#else
+# ifdef OF /* zlib prototype munger */
+# define PNGARG(arglist) OF(arglist)
+# else
-#ifdef _NO_PROTO
-# define PNGARG(arglist) ()
-#else
-# define PNGARG(arglist) arglist
-#endif /* _NO_PROTO */
+# ifdef _NO_PROTO
+# define PNGARG(arglist) ()
+# else
+# define PNGARG(arglist) arglist
+# endif /* _NO_PROTO */
-#endif /* OF */
+# endif /* OF */
#endif /* PNGARG */
-/* Try to determine if we are compiling on a Mac. Note that testing for
- * just __MWERKS__ is not good enough, because the Codewarrior is now used
- * on non-Mac platforms.
+/* Function calling conventions.
+ * =============================
+ * Normally it is not necessary to specify to the compiler how to call
+ * a function - it just does it - however on x86 systems derived from
+ * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
+ * and some others) there are multiple ways to call a function and the
+ * default can be changed on the compiler command line. For this reason
+ * libpng specifies the calling convention of every exported function and
+ * every function called via a user supplied function pointer. This is
+ * done in this file by defining the following macros:
+ *
+ * PNGAPI Calling convention for exported functions.
+ * PNGCBAPI Calling convention for user provided (callback) functions.
+ * PNGCAPI Calling convention used by the ANSI-C library (required
+ * for longjmp callbacks and sometimes used internally to
+ * specify the calling convention for zlib).
+ *
+ * These macros should never be overridden. If it is necessary to
+ * change calling convention in a private build this can be done
+ * by setting PNG_API_RULE (which defaults to 0) to one of the values
+ * below to select the correct 'API' variants.
+ *
+ * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout.
+ * This is correct in every known environment.
+ * PNG_API_RULE=1 Use the operating system convention for PNGAPI and
+ * the 'C' calling convention (from PNGCAPI) for
+ * callbacks (PNGCBAPI). This is no longer required
+ * in any known environment - if it has to be used
+ * please post an explanation of the problem to the
+ * libpng mailing list.
+ *
+ * These cases only differ if the operating system does not use the C
+ * calling convention, at present this just means the above cases
+ * (x86 DOS/Windows sytems) and, even then, this does not apply to
+ * Cygwin running on those systems.
+ *
+ * Note that the value must be defined in pnglibconf.h so that what
+ * the application uses to call the library matches the conventions
+ * set when building the library.
*/
-#ifndef MACOS
-# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
- defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
-# define MACOS
+
+/* Symbol export
+ * =============
+ * When building a shared library it is almost always necessary to tell
+ * the compiler which symbols to export. The png.h macro 'PNG_EXPORT'
+ * is used to mark the symbols. On some systems these symbols can be
+ * extracted at link time and need no special processing by the compiler,
+ * on other systems the symbols are flagged by the compiler and just
+ * the declaration requires a special tag applied (unfortunately) in a
+ * compiler dependent way. Some systems can do either.
+ *
+ * A small number of older systems also require a symbol from a DLL to
+ * be flagged to the program that calls it. This is a problem because
+ * we do not know in the header file included by application code that
+ * the symbol will come from a shared library, as opposed to a statically
+ * linked one. For this reason the application must tell us by setting
+ * the magic flag PNG_USE_DLL to turn on the special processing before
+ * it includes png.h.
+ *
+ * Four additional macros are used to make this happen:
+ *
+ * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from
+ * the build or imported if PNG_USE_DLL is set - compiler
+ * and system specific.
+ *
+ * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to
+ * 'type', compiler specific.
+ *
+ * PNG_DLL_EXPORT Set to the magic to use during a libpng build to
+ * make a symbol exported from the DLL. Not used in the
+ * public header files; see pngpriv.h for how it is used
+ * in the libpng build.
+ *
+ * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come
+ * from a DLL - used to define PNG_IMPEXP when
+ * PNG_USE_DLL is set.
+ */
+
+/* System specific discovery.
+ * ==========================
+ * This code is used at build time to find PNG_IMPEXP, the API settings
+ * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
+ * import processing is possible. On Windows/x86 systems it also sets
+ * compiler-specific macros to the values required to change the calling
+ * conventions of the various functions.
+ */
+#if ( defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
+ defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) ) &&\
+ ( defined(_X86_) || defined(_X64_) || defined(_M_IX86) ||\
+ defined(_M_X64) || defined(_M_IA64) )
+ /* Windows system (DOS doesn't support DLLs) running on x86/x64. Includes
+ * builds under Cygwin or MinGW. Also includes Watcom builds but these need
+ * special treatment because they are not compatible with GCC or Visual C
+ * because of different calling conventions.
+ */
+# if PNG_API_RULE == 2
+ /* If this line results in an error, either because __watcall is not
+ * understood or because of a redefine just below you cannot use *this*
+ * build of the library with the compiler you are using. *This* build was
+ * build using Watcom and applications must also be built using Watcom!
+ */
+# define PNGCAPI __watcall
+# endif
+
+# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
+# define PNGCAPI __cdecl
+# if PNG_API_RULE == 1
+# define PNGAPI __stdcall
+# endif
+# else
+ /* An older compiler, or one not detected (erroneously) above,
+ * if necessary override on the command line to get the correct
+ * variants for the compiler.
+ */
+# ifndef PNGCAPI
+# define PNGCAPI _cdecl
+# endif
+# if PNG_API_RULE == 1 && !defined(PNGAPI)
+# define PNGAPI _stdcall
+# endif
+# endif /* compiler/api */
+ /* NOTE: PNGCBAPI always defaults to PNGCAPI. */
+
+# if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
+ ERROR: PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed
+# endif
+
+# if (defined(_MSC_VER) && _MSC_VER < 800) ||\
+ (defined(__BORLANDC__) && __BORLANDC__ < 0x500)
+ /* older Borland and MSC
+ * compilers used '__export' and required this to be after
+ * the type.
+ */
+# ifndef PNG_EXPORT_TYPE
+# define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
+# endif
+# define PNG_DLL_EXPORT __export
+# else /* newer compiler */
+# define PNG_DLL_EXPORT __declspec(dllexport)
+# ifndef PNG_DLL_IMPORT
+# define PNG_DLL_IMPORT __declspec(dllimport)
+# endif
+# endif /* compiler */
+
+#else /* !Windows/x86 */
+# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
+# define PNGAPI _System
+# else /* !Windows/x86 && !OS/2 */
+ /* Use the defaults, or define PNG*API on the command line (but
+ * this will have to be done for every compile!)
+ */
+# endif /* other system, !OS/2 */
+#endif /* !Windows/x86 */
+
+/* Now do all the defaulting . */
+#ifndef PNGCAPI
+# define PNGCAPI
+#endif
+#ifndef PNGCBAPI
+# define PNGCBAPI PNGCAPI
+#endif
+#ifndef PNGAPI
+# define PNGAPI PNGCAPI
+#endif
+
+/* PNG_IMPEXP may be set on the compilation system command line or (if not set)
+ * then in an internal header file when building the library, otherwise (when
+ * using the library) it is set here.
+ */
+#ifndef PNG_IMPEXP
+# if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
+ /* This forces use of a DLL, disallowing static linking */
+# define PNG_IMPEXP PNG_DLL_IMPORT
+# endif
+
+# ifndef PNG_IMPEXP
+# define PNG_IMPEXP
# endif
#endif
-/* Enough people need this for various reasons to include it here */
-#if !defined(MACOS) && !defined(RISCOS)
-# include <sys/types.h>
+/* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat
+ * 'attributes' as a storage class - the attributes go at the start of the
+ * function definition, and attributes are always appended regardless of the
+ * compiler. This considerably simplifies these macros but may cause problems
+ * if any compilers both need function attributes and fail to handle them as
+ * a storage class (this is unlikely.)
+ */
+#ifndef PNG_FUNCTION
+# define PNG_FUNCTION(type, name, args, attributes) attributes type name args
#endif
-/* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
-#if !defined(PNG_NO_SETJMP) && \
- !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
-# define PNG_SETJMP_SUPPORTED
+#ifndef PNG_EXPORT_TYPE
+# define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
#endif
-#ifdef PNG_SETJMP_SUPPORTED
-/* This is an attempt to force a single setjmp behaviour on Linux. If
- * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
+ /* The ordinal value is only relevant when preprocessing png.h for symbol
+ * table entries, so we discard it here. See the .dfn files in the
+ * scripts directory.
+ */
+#ifndef PNG_EXPORTA
+
+# define PNG_EXPORTA(ordinal, type, name, args, attributes)\
+ PNG_FUNCTION(PNG_EXPORT_TYPE(type),(PNGAPI name),PNGARG(args), \
+ extern attributes)
+#endif
+
+/* ANSI-C (C90) does not permit a macro to be invoked with an empty argument,
+ * so make something non-empty to satisfy the requirement:
+ */
+#define PNG_EMPTY /*empty list*/
+
+#define PNG_EXPORT(ordinal, type, name, args)\
+ PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY)
+
+/* Use PNG_REMOVED to comment out a removed interface. */
+#ifndef PNG_REMOVED
+# define PNG_REMOVED(ordinal, type, name, args, attributes)
+#endif
+
+#ifndef PNG_CALLBACK
+# define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args)
+#endif
+
+/* Support for compiler specific function attributes. These are used
+ * so that where compiler support is available incorrect use of API
+ * functions in png.h will generate compiler warnings.
*
- * You can bypass this test if you know that your application uses exactly
- * the same setjmp.h that was included when libpng was built. Only define
- * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
- * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
- * while building a separate libpng library for general use.
+ * Added at libpng-1.2.41.
*/
-# ifndef PNG_SKIP_SETJMP_CHECK
-# ifdef __linux__
-# ifdef _BSD_SOURCE
-# define PNG_SAVE_BSD_SOURCE
-# undef _BSD_SOURCE
-# endif
-# ifdef _SETJMP_H
- /* If you encounter a compiler error here, see the explanation
- * near the end of INSTALL.
- */
- __pngconf.h__ in libpng already includes setjmp.h;
- __dont__ include it again.;
-# endif
-# endif /* __linux__ */
-# endif /* PNG_SKIP_SETJMP_CHECK */
+#ifndef PNG_NO_PEDANTIC_WARNINGS
+# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
+# define PNG_PEDANTIC_WARNINGS_SUPPORTED
+# endif
+#endif
- /* Include setjmp.h for error handling */
-# include <setjmp.h>
-
-# ifdef __linux__
-# ifdef PNG_SAVE_BSD_SOURCE
-# ifdef _BSD_SOURCE
-# undef _BSD_SOURCE
-# endif
-# define _BSD_SOURCE
-# undef PNG_SAVE_BSD_SOURCE
+#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
+ /* Support for compiler specific function attributes. These are used
+ * so that where compiler support is available incorrect use of API
+ * functions in png.h will generate compiler warnings. Added at libpng
+ * version 1.2.41.
+ */
+# if defined(__GNUC__)
+# ifndef PNG_USE_RESULT
+# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
# endif
-# endif /* __linux__ */
-#endif /* PNG_SETJMP_SUPPORTED */
+# ifndef PNG_NORETURN
+# define PNG_NORETURN __attribute__((__noreturn__))
+# endif
+# ifndef PNG_ALLOCATED
+# define PNG_ALLOCATED __attribute__((__malloc__))
+# endif
+# ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED __attribute__((__deprecated__))
+# endif
+# ifndef PNG_PRIVATE
+# if 0 /* Doesn't work so we use deprecated instead*/
+# define PNG_PRIVATE \
+ __attribute__((warning("This function is not exported by libpng.")))
+# else
+# define PNG_PRIVATE \
+ __attribute__((__deprecated__))
+# endif
+# endif
+# endif /* __GNUC__ */
-#ifdef BSD
-# include <strings.h>
-#else
-# include <string.h>
-#endif
+# if defined(_MSC_VER) && (_MSC_VER >= 1300)
+# ifndef PNG_USE_RESULT
+# define PNG_USE_RESULT /* not supported */
+# endif
+# ifndef PNG_NORETURN
+# define PNG_NORETURN __declspec(noreturn)
+# endif
+# ifndef PNG_ALLOCATED
+# if (_MSC_VER >= 1400)
+# define PNG_ALLOCATED __declspec(restrict)
+# endif
+# endif
+# ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED __declspec(deprecated)
+# endif
+# ifndef PNG_PRIVATE
+# define PNG_PRIVATE __declspec(deprecated)
+# endif
+# endif /* _MSC_VER */
+#endif /* PNG_PEDANTIC_WARNINGS */
-/* Other defines for things like memory and the like can go here. */
-
-/* This controls how fine the quantizing gets. As this allocates
- * a largish chunk of memory (32K), those who are not as concerned
- * with quantizing quality can decrease some or all of these.
- */
-
-/* Prior to libpng-1.4.2, these were PNG_DITHER_*_BITS
- * These migration aids will be removed from libpng-1.5.0.
- */
-#ifdef PNG_DITHER_RED_BITS
-# define PNG_QUANTIZE_RED_BITS PNG_DITHER_RED_BITS
+#ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED /* Use of this function is deprecated */
#endif
-#ifdef PNG_DITHER_GREEN_BITS
-# define PNG_QUANTIZE_GREEN_BITS PNG_DITHER_GREEN_BITS
+#ifndef PNG_USE_RESULT
+# define PNG_USE_RESULT /* The result of this function must be checked */
#endif
-#ifdef PNG_DITHER_BLUE_BITS
-# define PNG_QUANTIZE_BLUE_BITS PNG_DITHER_BLUE_BITS
+#ifndef PNG_NORETURN
+# define PNG_NORETURN /* This function does not return */
#endif
-
-#ifndef PNG_QUANTIZE_RED_BITS
-# define PNG_QUANTIZE_RED_BITS 5
+#ifndef PNG_ALLOCATED
+# define PNG_ALLOCATED /* The result of the function is new memory */
#endif
-#ifndef PNG_QUANTIZE_GREEN_BITS
-# define PNG_QUANTIZE_GREEN_BITS 5
+#ifndef PNG_PRIVATE
+# define PNG_PRIVATE /* This is a private libpng function */
#endif
-#ifndef PNG_QUANTIZE_BLUE_BITS
-# define PNG_QUANTIZE_BLUE_BITS 5
+#ifndef PNG_FP_EXPORT /* A floating point API. */
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+# define PNG_FP_EXPORT(ordinal, type, name, args)\
+ PNG_EXPORT(ordinal, type, name, args)
+# else /* No floating point APIs */
+# define PNG_FP_EXPORT(ordinal, type, name, args)
+# endif
#endif
-
-/* This controls how fine the gamma correction becomes when you
- * are only interested in 8 bits anyway. Increasing this value
- * results in more memory being used, and more pow() functions
- * being called to fill in the gamma tables. Don't set this value
- * less then 8, and even that may not work (I haven't tested it).
- */
-
-#ifndef PNG_MAX_GAMMA_8
-# define PNG_MAX_GAMMA_8 11
-#endif
-
-/* This controls how much a difference in gamma we can tolerate before
- * we actually start doing gamma conversion.
- */
-#ifndef PNG_GAMMA_THRESHOLD
-# define PNG_GAMMA_THRESHOLD 0.05
+#ifndef PNG_FIXED_EXPORT /* A fixed point API. */
+# ifdef PNG_FIXED_POINT_SUPPORTED
+# define PNG_FIXED_EXPORT(ordinal, type, name, args)\
+ PNG_EXPORT(ordinal, type, name, args)
+# else /* No fixed point APIs */
+# define PNG_FIXED_EXPORT(ordinal, type, name, args)
+# endif
#endif
/* The following uses const char * instead of char * for error
* and warning message functions, so some compilers won't complain.
- * If you do not want to use const, define PNG_NO_CONST.
+ * If you do not want to use const, define PNG_NO_CONST here.
+ *
+ * This should not change how the APIs are called, so it can be done
+ * on a per-file basis in the application.
*/
-
#ifndef PNG_CONST
# ifndef PNG_NO_CONST
# define PNG_CONST const
@@ -470,648 +429,6 @@
# endif
#endif
-/* The following defines give you the ability to remove code from the
- * library that you will not be using. I wish I could figure out how to
- * automate this, but I can't do that without making it seriously hard
- * on the users. So if you are not using an ability, change the #define
- * to an #undef, or pass in PNG_NO_feature and that part of the library
- * will not be compiled.
-
- * If your linker can't find a function, you may want to make sure the
- * ability is defined here. Some of these depend upon some others being
- * defined. I haven't figured out all the interactions here, so you may
- * have to experiment awhile to get everything to compile. If you are
- * creating or using a shared library, you probably shouldn't touch this,
- * as it will affect the size of the structures, and this will cause bad
- * things to happen if the library and/or application ever change.
- */
-
-/* Any features you will not be using can be undef'ed here */
-
-/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
- * to turn it off with PNG_NO_READ|WRITE_TRANSFORMS on the compile line,
- * then pick and choose which ones to define without having to edit this
- * file. It is safe to use the PNG_NO_READ|WRITE_TRANSFORMS
- * if you only want to have a png-compliant reader/writer but don't need
- * any of the extra transformations. This saves about 80 kbytes in a
- * typical installation of the library. (PNG_NO_* form added in version
- * 1.0.1c, for consistency; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
- * 1.4.0)
- */
-
-/* Ignore attempt to turn off both floating and fixed point support */
-#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
- !defined(PNG_NO_FIXED_POINT_SUPPORTED)
-# define PNG_FIXED_POINT_SUPPORTED
-#endif
-
-#ifdef PNG_READ_SUPPORTED
-
-/* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */
-#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
- !defined(PNG_NO_READ_TRANSFORMS)
-# define PNG_READ_TRANSFORMS_SUPPORTED
-#endif
-
-#ifdef PNG_READ_TRANSFORMS_SUPPORTED
-# ifndef PNG_NO_READ_EXPAND
-# define PNG_READ_EXPAND_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_SHIFT
-# define PNG_READ_SHIFT_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_PACK
-# define PNG_READ_PACK_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_BGR
-# define PNG_READ_BGR_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_SWAP
-# define PNG_READ_SWAP_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_PACKSWAP
-# define PNG_READ_PACKSWAP_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_INVERT
-# define PNG_READ_INVERT_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_QUANTIZE
- /* Prior to libpng-1.4.0 this was PNG_READ_DITHER_SUPPORTED */
-# ifndef PNG_NO_READ_DITHER /* This migration aid will be removed */
-# define PNG_READ_QUANTIZE_SUPPORTED
-# endif
-# endif
-# ifndef PNG_NO_READ_BACKGROUND
-# define PNG_READ_BACKGROUND_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_16_TO_8
-# define PNG_READ_16_TO_8_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_FILLER
-# define PNG_READ_FILLER_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_GAMMA
-# define PNG_READ_GAMMA_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_GRAY_TO_RGB
-# define PNG_READ_GRAY_TO_RGB_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_SWAP_ALPHA
-# define PNG_READ_SWAP_ALPHA_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_INVERT_ALPHA
-# define PNG_READ_INVERT_ALPHA_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_STRIP_ALPHA
-# define PNG_READ_STRIP_ALPHA_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_USER_TRANSFORM
-# define PNG_READ_USER_TRANSFORM_SUPPORTED
-# endif
-# ifndef PNG_NO_READ_RGB_TO_GRAY
-# define PNG_READ_RGB_TO_GRAY_SUPPORTED
-# endif
-#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
-
-/* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
-#if !defined(PNG_NO_PROGRESSIVE_READ) && \
- !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
-# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
-#endif /* about interlacing capability! You'll */
- /* still have interlacing unless you change the following define: */
-
-#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
-
-/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
-#if !defined(PNG_NO_SEQUENTIAL_READ) && \
- !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
- !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
-# define PNG_SEQUENTIAL_READ_SUPPORTED
-#endif
-
-#ifndef PNG_NO_READ_COMPOSITE_NODIV
-# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
-# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
-# endif
-#endif
-
-#if !defined(PNG_NO_GET_INT_32) || defined(PNG_READ_oFFS_SUPPORTED) || \
- defined(PNG_READ_pCAL_SUPPORTED)
-# ifndef PNG_GET_INT_32_SUPPORTED
-# define PNG_GET_INT_32_SUPPORTED
-# endif
-#endif
-
-#endif /* PNG_READ_SUPPORTED */
-
-#ifdef PNG_WRITE_SUPPORTED
-
-/* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
-#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
- !defined(PNG_NO_WRITE_TRANSFORMS)
-# define PNG_WRITE_TRANSFORMS_SUPPORTED
-#endif
-
-#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
-# ifndef PNG_NO_WRITE_SHIFT
-# define PNG_WRITE_SHIFT_SUPPORTED
-# endif
-# ifndef PNG_NO_WRITE_PACK
-# define PNG_WRITE_PACK_SUPPORTED
-# endif
-# ifndef PNG_NO_WRITE_BGR
-# define PNG_WRITE_BGR_SUPPORTED
-# endif
-# ifndef PNG_NO_WRITE_SWAP
-# define PNG_WRITE_SWAP_SUPPORTED
-# endif
-# ifndef PNG_NO_WRITE_PACKSWAP
-# define PNG_WRITE_PACKSWAP_SUPPORTED
-# endif
-# ifndef PNG_NO_WRITE_INVERT
-# define PNG_WRITE_INVERT_SUPPORTED
-# endif
-# ifndef PNG_NO_WRITE_FILLER
-# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
-# endif
-# ifndef PNG_NO_WRITE_SWAP_ALPHA
-# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
-# endif
-# ifndef PNG_NO_WRITE_INVERT_ALPHA
-# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
-# endif
-# ifndef PNG_NO_WRITE_USER_TRANSFORM
-# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
-# endif
-#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
-
-#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
- !defined(PNG_WRITE_INTERLACING_SUPPORTED)
- /* This is not required for PNG-compliant encoders, but can cause
- * trouble if left undefined
- */
-# define PNG_WRITE_INTERLACING_SUPPORTED
-#endif
-
-#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
- !defined(PNG_WRITE_WEIGHTED_FILTER) && \
- defined(PNG_FLOATING_POINT_SUPPORTED)
-# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
-#endif
-
-#ifndef PNG_NO_WRITE_FLUSH
-# define PNG_WRITE_FLUSH_SUPPORTED
-#endif
-
-#if !defined(PNG_NO_SAVE_INT_32) || defined(PNG_WRITE_oFFS_SUPPORTED) || \
- defined(PNG_WRITE_pCAL_SUPPORTED)
-# ifndef PNG_SAVE_INT_32_SUPPORTED
-# define PNG_SAVE_INT_32_SUPPORTED
-# endif
-#endif
-
-#endif /* PNG_WRITE_SUPPORTED */
-
-#define PNG_NO_ERROR_NUMBERS
-
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
- defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-# ifndef PNG_NO_USER_TRANSFORM_PTR
-# define PNG_USER_TRANSFORM_PTR_SUPPORTED
-# endif
-#endif
-
-#if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
-# define PNG_TIME_RFC1123_SUPPORTED
-#endif
-
-/* This adds extra functions in pngget.c for accessing data from the
- * info pointer (added in version 0.99)
- * png_get_image_width()
- * png_get_image_height()
- * png_get_bit_depth()
- * png_get_color_type()
- * png_get_compression_type()
- * png_get_filter_type()
- * png_get_interlace_type()
- * png_get_pixel_aspect_ratio()
- * png_get_pixels_per_meter()
- * png_get_x_offset_pixels()
- * png_get_y_offset_pixels()
- * png_get_x_offset_microns()
- * png_get_y_offset_microns()
- */
-#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
-# define PNG_EASY_ACCESS_SUPPORTED
-#endif
-
-/* Added at libpng-1.2.0 */
-#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
-# define PNG_USER_MEM_SUPPORTED
-#endif
-
-/* Added at libpng-1.2.6 */
-#ifndef PNG_NO_SET_USER_LIMITS
-# ifndef PNG_SET_USER_LIMITS_SUPPORTED
-# define PNG_SET_USER_LIMITS_SUPPORTED
-# endif
- /* Feature added at libpng-1.4.0, this flag added at 1.4.1 */
-# ifndef PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
-# define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
-# endif
- /* Feature added at libpng-1.4.1, this flag added at 1.4.1 */
-# ifndef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
-# define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
-# endif
-#endif
-
-/* Added at libpng-1.2.43 */
-#ifndef PNG_USER_LIMITS_SUPPORTED
-# ifndef PNG_NO_USER_LIMITS
-# define PNG_USER_LIMITS_SUPPORTED
-# endif
-#endif
-
-/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
- * how large, set these two limits to 0x7fffffffL
- */
-#ifndef PNG_USER_WIDTH_MAX
-# define PNG_USER_WIDTH_MAX 1000000L
-#endif
-#ifndef PNG_USER_HEIGHT_MAX
-# define PNG_USER_HEIGHT_MAX 1000000L
-#endif
-
-/* Added at libpng-1.2.43. To accept all valid PNGs no matter
- * how large, set these two limits to 0.
- */
-#ifndef PNG_USER_CHUNK_CACHE_MAX
-# define PNG_USER_CHUNK_CACHE_MAX 0
-#endif
-
-/* Added at libpng-1.2.43 */
-#ifndef PNG_USER_CHUNK_MALLOC_MAX
-# define PNG_USER_CHUNK_MALLOC_MAX 0
-#endif
-
-/* Added at libpng-1.4.0 */
-#if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
-# define PNG_IO_STATE_SUPPORTED
-#endif
-
-#ifndef PNG_LITERAL_SHARP
-# define PNG_LITERAL_SHARP 0x23
-#endif
-#ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
-# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
-#endif
-#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
-# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
-#endif
-#ifndef PNG_STRING_NEWLINE
-#define PNG_STRING_NEWLINE "\n"
-#endif
-
-/* These are currently experimental features, define them if you want */
-
-/* Very little testing */
-/*
-#ifdef PNG_READ_SUPPORTED
-# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
-# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
-# endif
-#endif
-*/
-
-/* This is only for PowerPC big-endian and 680x0 systems */
-/* some testing */
-/*
-#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
-# define PNG_READ_BIG_ENDIAN_SUPPORTED
-#endif
-*/
-
-#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
-# define PNG_USE_READ_MACROS
-#endif
-
-/* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
-
-#if !defined(PNG_NO_POINTER_INDEXING) && \
- !defined(PNG_POINTER_INDEXING_SUPPORTED)
-# define PNG_POINTER_INDEXING_SUPPORTED
-#endif
-
-
-/* Any chunks you are not interested in, you can undef here. The
- * ones that allocate memory may be expecially important (hIST,
- * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
- * a bit smaller.
- */
-
-/* The size of the png_text structure changed in libpng-1.0.6 when
- * iTXt support was added. iTXt support was turned off by default through
- * libpng-1.2.x, to support old apps that malloc the png_text structure
- * instead of calling png_set_text() and letting libpng malloc it. It
- * was turned on by default in libpng-1.4.0.
- */
-
-/* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
-#if defined(PNG_READ_SUPPORTED) && \
- !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
- !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
-# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
-#endif
-
-/* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
-#if defined(PNG_WRITE_SUPPORTED) && \
- !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
- !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
-# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
-#endif
-
-#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
-
-#ifdef PNG_NO_READ_TEXT
-# define PNG_NO_READ_iTXt
-# define PNG_NO_READ_tEXt
-# define PNG_NO_READ_zTXt
-#endif
-
-#ifndef PNG_NO_READ_bKGD
-# define PNG_READ_bKGD_SUPPORTED
-# define PNG_bKGD_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_cHRM
-# define PNG_READ_cHRM_SUPPORTED
-# define PNG_cHRM_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_gAMA
-# define PNG_READ_gAMA_SUPPORTED
-# define PNG_gAMA_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_hIST
-# define PNG_READ_hIST_SUPPORTED
-# define PNG_hIST_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_iCCP
-# define PNG_READ_iCCP_SUPPORTED
-# define PNG_iCCP_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_iTXt
-# ifndef PNG_READ_iTXt_SUPPORTED
-# define PNG_READ_iTXt_SUPPORTED
-# endif
-# ifndef PNG_iTXt_SUPPORTED
-# define PNG_iTXt_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_READ_oFFs
-# define PNG_READ_oFFs_SUPPORTED
-# define PNG_oFFs_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_pCAL
-# define PNG_READ_pCAL_SUPPORTED
-# define PNG_pCAL_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_sCAL
-# define PNG_READ_sCAL_SUPPORTED
-# define PNG_sCAL_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_pHYs
-# define PNG_READ_pHYs_SUPPORTED
-# define PNG_pHYs_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_sBIT
-# define PNG_READ_sBIT_SUPPORTED
-# define PNG_sBIT_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_sPLT
-# define PNG_READ_sPLT_SUPPORTED
-# define PNG_sPLT_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_sRGB
-# define PNG_READ_sRGB_SUPPORTED
-# define PNG_sRGB_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_tEXt
-# define PNG_READ_tEXt_SUPPORTED
-# define PNG_tEXt_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_tIME
-# define PNG_READ_tIME_SUPPORTED
-# define PNG_tIME_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_tRNS
-# define PNG_READ_tRNS_SUPPORTED
-# define PNG_tRNS_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_zTXt
-# define PNG_READ_zTXt_SUPPORTED
-# define PNG_zTXt_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_OPT_PLTE
-# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
-#endif /* optional PLTE chunk in RGB and RGBA images */
-#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
- defined(PNG_READ_zTXt_SUPPORTED)
-# define PNG_READ_TEXT_SUPPORTED
-# define PNG_TEXT_SUPPORTED
-#endif
-
-#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
-
-#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
-# ifndef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-# endif
-# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
-# define PNG_UNKNOWN_CHUNKS_SUPPORTED
-# endif
-# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
-# define PNG_READ_USER_CHUNKS_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_READ_USER_CHUNKS
-# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
-# define PNG_READ_USER_CHUNKS_SUPPORTED
-# endif
-# ifndef PNG_USER_CHUNKS_SUPPORTED
-# define PNG_USER_CHUNKS_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_HANDLE_AS_UNKNOWN
-# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-# endif
-#endif
-
-#ifdef PNG_WRITE_SUPPORTED
-#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
-
-#ifdef PNG_NO_WRITE_TEXT
-# define PNG_NO_WRITE_iTXt
-# define PNG_NO_WRITE_tEXt
-# define PNG_NO_WRITE_zTXt
-#endif
-#ifndef PNG_NO_WRITE_bKGD
-# define PNG_WRITE_bKGD_SUPPORTED
-# ifndef PNG_bKGD_SUPPORTED
-# define PNG_bKGD_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_cHRM
-# define PNG_WRITE_cHRM_SUPPORTED
-# ifndef PNG_cHRM_SUPPORTED
-# define PNG_cHRM_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_gAMA
-# define PNG_WRITE_gAMA_SUPPORTED
-# ifndef PNG_gAMA_SUPPORTED
-# define PNG_gAMA_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_hIST
-# define PNG_WRITE_hIST_SUPPORTED
-# ifndef PNG_hIST_SUPPORTED
-# define PNG_hIST_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_iCCP
-# define PNG_WRITE_iCCP_SUPPORTED
-# ifndef PNG_iCCP_SUPPORTED
-# define PNG_iCCP_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_iTXt
-# ifndef PNG_WRITE_iTXt_SUPPORTED
-# define PNG_WRITE_iTXt_SUPPORTED
-# endif
-# ifndef PNG_iTXt_SUPPORTED
-# define PNG_iTXt_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_oFFs
-# define PNG_WRITE_oFFs_SUPPORTED
-# ifndef PNG_oFFs_SUPPORTED
-# define PNG_oFFs_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_pCAL
-# define PNG_WRITE_pCAL_SUPPORTED
-# ifndef PNG_pCAL_SUPPORTED
-# define PNG_pCAL_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_sCAL
-# define PNG_WRITE_sCAL_SUPPORTED
-# ifndef PNG_sCAL_SUPPORTED
-# define PNG_sCAL_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_pHYs
-# define PNG_WRITE_pHYs_SUPPORTED
-# ifndef PNG_pHYs_SUPPORTED
-# define PNG_pHYs_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_sBIT
-# define PNG_WRITE_sBIT_SUPPORTED
-# ifndef PNG_sBIT_SUPPORTED
-# define PNG_sBIT_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_sPLT
-# define PNG_WRITE_sPLT_SUPPORTED
-# ifndef PNG_sPLT_SUPPORTED
-# define PNG_sPLT_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_sRGB
-# define PNG_WRITE_sRGB_SUPPORTED
-# ifndef PNG_sRGB_SUPPORTED
-# define PNG_sRGB_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_tEXt
-# define PNG_WRITE_tEXt_SUPPORTED
-# ifndef PNG_tEXt_SUPPORTED
-# define PNG_tEXt_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_tIME
-# define PNG_WRITE_tIME_SUPPORTED
-# ifndef PNG_tIME_SUPPORTED
-# define PNG_tIME_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_tRNS
-# define PNG_WRITE_tRNS_SUPPORTED
-# ifndef PNG_tRNS_SUPPORTED
-# define PNG_tRNS_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_WRITE_zTXt
-# define PNG_WRITE_zTXt_SUPPORTED
-# ifndef PNG_zTXt_SUPPORTED
-# define PNG_zTXt_SUPPORTED
-# endif
-#endif
-#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
- defined(PNG_WRITE_zTXt_SUPPORTED)
-# define PNG_WRITE_TEXT_SUPPORTED
-# ifndef PNG_TEXT_SUPPORTED
-# define PNG_TEXT_SUPPORTED
-# endif
-#endif
-
-#ifdef PNG_WRITE_tIME_SUPPORTED
-# ifndef PNG_NO_CONVERT_tIME
-# ifndef _WIN32_WCE
-/* The "tm" structure is not supported on WindowsCE */
-# ifndef PNG_CONVERT_tIME_SUPPORTED
-# define PNG_CONVERT_tIME_SUPPORTED
-# endif
-# endif
-# endif
-#endif
-
-#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
-
-#ifndef PNG_NO_WRITE_FILTER
-# ifndef PNG_WRITE_FILTER_SUPPORTED
-# define PNG_WRITE_FILTER_SUPPORTED
-# endif
-#endif
-
-#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
-# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
-# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
-# define PNG_UNKNOWN_CHUNKS_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_HANDLE_AS_UNKNOWN
-# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-# endif
-#endif
-#endif /* PNG_WRITE_SUPPORTED */
-
-/* Turn this off to disable png_read_png() and
- * png_write_png() and leave the row_pointers member
- * out of the info structure.
- */
-#ifndef PNG_NO_INFO_IMAGE
-# define PNG_INFO_IMAGE_SUPPORTED
-#endif
-
-/* Need the time information for converting tIME chunks */
-#ifdef PNG_CONVERT_tIME_SUPPORTED
- /* "time.h" functions are not supported on WindowsCE */
-# include <time.h>
-#endif
-
/* Some typedefs to get us started. These should be safe on most of the
* common platforms. The typedefs should be at least as large as the
* numbers suggest (a png_uint_32 must be at least 32 bits long), but they
@@ -1132,9 +449,9 @@
typedef unsigned char png_byte;
#ifdef PNG_NO_SIZE_T
- typedef unsigned int png_size_t;
+typedef unsigned int png_size_t;
#else
- typedef size_t png_size_t;
+typedef size_t png_size_t;
#endif
#define png_sizeof(x) (sizeof (x))
@@ -1156,20 +473,20 @@
# else
# define LDATA 0
# endif
- /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
+ /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
-# define PNG_MAX_MALLOC_64K
+# define PNG_MAX_MALLOC_64K /* only used in build */
# if (LDATA != 1)
# ifndef FAR
# define FAR __far
# endif
# define USE_FAR_KEYWORD
# endif /* LDATA != 1 */
- /* Possibly useful for moving data out of default segment.
- * Uncomment it if you want. Could also define FARDATA as
- * const if your compiler supports it. (SJT)
-# define FARDATA FAR
- */
+ /* Possibly useful for moving data out of default segment.
+ * Uncomment it if you want. Could also define FARDATA as
+ * const if your compiler supports it. (SJT)
+# define FARDATA FAR
+ */
# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
#endif /* __BORLANDC__ */
@@ -1199,26 +516,37 @@
#endif
/* Typedef for floating-point numbers that are converted
- to fixed-point with a multiple of 100,000, e.g., int_gamma */
+ * to fixed-point with a multiple of 100,000, e.g., gamma
+ */
typedef png_int_32 png_fixed_point;
/* Add typedefs for pointers */
-typedef void FAR * png_voidp;
-typedef png_byte FAR * png_bytep;
-typedef png_uint_32 FAR * png_uint_32p;
-typedef png_int_32 FAR * png_int_32p;
-typedef png_uint_16 FAR * png_uint_16p;
-typedef png_int_16 FAR * png_int_16p;
-typedef PNG_CONST char FAR * png_const_charp;
-typedef char FAR * png_charp;
-typedef png_fixed_point FAR * png_fixed_point_p;
+typedef void FAR * png_voidp;
+typedef PNG_CONST void FAR * png_const_voidp;
+typedef png_byte FAR * png_bytep;
+typedef PNG_CONST png_byte FAR * png_const_bytep;
+typedef png_uint_32 FAR * png_uint_32p;
+typedef PNG_CONST png_uint_32 FAR * png_const_uint_32p;
+typedef png_int_32 FAR * png_int_32p;
+typedef PNG_CONST png_int_32 FAR * png_const_int_32p;
+typedef png_uint_16 FAR * png_uint_16p;
+typedef PNG_CONST png_uint_16 FAR * png_const_uint_16p;
+typedef png_int_16 FAR * png_int_16p;
+typedef PNG_CONST png_int_16 FAR * png_const_int_16p;
+typedef char FAR * png_charp;
+typedef PNG_CONST char FAR * png_const_charp;
+typedef png_fixed_point FAR * png_fixed_point_p;
+typedef PNG_CONST png_fixed_point FAR * png_const_fixed_point_p;
+typedef png_size_t FAR * png_size_tp;
+typedef PNG_CONST png_size_t FAR * png_const_size_tp;
-#ifndef PNG_NO_STDIO
-typedef FILE * png_FILE_p;
+#ifdef PNG_STDIO_SUPPORTED
+typedef FILE * png_FILE_p;
#endif
#ifdef PNG_FLOATING_POINT_SUPPORTED
-typedef double FAR * png_doublep;
+typedef double FAR * png_doublep;
+typedef PNG_CONST double FAR * png_const_doublep;
#endif
/* Pointers to pointers; i.e. arrays */
@@ -1237,277 +565,6 @@
/* Pointers to pointers to pointers; i.e., pointer to array */
typedef char FAR * FAR * FAR * png_charppp;
-/* Define PNG_BUILD_DLL if the module being built is a Windows
- * LIBPNG DLL.
- *
- * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
- * It is equivalent to Microsoft predefined macro _DLL that is
- * automatically defined when you compile using the share
- * version of the CRT (C Run-Time library)
- *
- * The cygwin mods make this behavior a little different:
- * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
- * Define PNG_STATIC if you are building a static library for use with cygwin,
- * -or- if you are building an application that you want to link to the
- * static library.
- * PNG_USE_DLL is defined by default (no user action needed) unless one of
- * the other flags is defined.
- */
-
-#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
-# define PNG_DLL
-#endif
-
-/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
- * you may get warnings regarding the linkage of png_zalloc and png_zfree.
- * Don't ignore those warnings; you must also reset the default calling
- * convention in your compiler to match your PNGAPI, and you must build
- * zlib and your applications the same way you build libpng.
- */
-
-#ifdef __CYGWIN__
-# undef PNGAPI
-# define PNGAPI __cdecl
-# undef PNG_IMPEXP
-# define PNG_IMPEXP
-#endif
-
-#ifdef __WATCOMC__
-# ifndef PNGAPI
-# define PNGAPI
-# endif
-#endif
-
-#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
-# ifndef PNG_NO_MODULEDEF
-# define PNG_NO_MODULEDEF
-# endif
-#endif
-
-#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
-# define PNG_IMPEXP
-#endif
-
-#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
- (( defined(_Windows) || defined(_WINDOWS) || \
- defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
-
-# ifndef PNGAPI
-# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
-# define PNGAPI __cdecl
-# else
-# define PNGAPI _cdecl
-# endif
-# endif
-
-# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
- 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
-# define PNG_IMPEXP
-# endif
-
-# ifndef PNG_IMPEXP
-
-# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
-# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
-
- /* Borland/Microsoft */
-# if defined(_MSC_VER) || defined(__BORLANDC__)
-# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
-# define PNG_EXPORT PNG_EXPORT_TYPE1
-# else
-# define PNG_EXPORT PNG_EXPORT_TYPE2
-# ifdef PNG_BUILD_DLL
-# define PNG_IMPEXP __export
-# else
-# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in VC++ */
-# endif /* Exists in Borland C++ for
- C++ classes (== huge) */
-# endif
-# endif
-
-# ifndef PNG_IMPEXP
-# ifdef PNG_BUILD_DLL
-# define PNG_IMPEXP __declspec(dllexport)
-# else
-# define PNG_IMPEXP __declspec(dllimport)
-# endif
-# endif
-# endif /* PNG_IMPEXP */
-#else /* !(DLL || non-cygwin WINDOWS) */
-# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
-# ifndef PNGAPI
-# define PNGAPI _System
-# endif
-# else
-# if 0 /* ... other platforms, with other meanings */
-# endif
-# endif
-#endif
-
-#ifndef PNGAPI
-# define PNGAPI
-#endif
-#ifndef PNG_IMPEXP
-# define PNG_IMPEXP
-#endif
-
-#ifdef PNG_BUILDSYMS
-# ifndef PNG_EXPORT
-# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
-# endif
-#endif
-
-#ifndef PNG_EXPORT
-# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
-#endif
-
-#define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
-
-/* Support for compiler specific function attributes. These are used
- * so that where compiler support is available incorrect use of API
- * functions in png.h will generate compiler warnings.
- *
- * Added at libpng-1.2.41.
- */
-
-#ifndef PNG_NO_PEDANTIC_WARNINGS
-# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
-# define PNG_PEDANTIC_WARNINGS_SUPPORTED
-# endif
-#endif
-
-#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
-/* Support for compiler specific function attributes. These are used
- * so that where compiler support is available incorrect use of API
- * functions in png.h will generate compiler warnings. Added at libpng
- * version 1.2.41.
- */
-# ifdef __GNUC__
-# ifndef PNG_USE_RESULT
-# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
-# endif
-# ifndef PNG_NORETURN
-# define PNG_NORETURN __attribute__((__noreturn__))
-# endif
-# ifndef PNG_ALLOCATED
-# define PNG_ALLOCATED __attribute__((__malloc__))
-# endif
-# ifndef PNG_DEPRECATED
-# define PNG_DEPRECATED __attribute__((__deprecated__))
-# endif
-
- /* This specifically protects structure members that should only be
- * accessed from within the library, therefore should be empty during
- * a library build.
- */
-# ifndef PNG_DEPSTRUCT
-# define PNG_DEPSTRUCT __attribute__((__deprecated__))
-# endif
-# ifndef PNG_PRIVATE
-# if 0 /* Doesn't work so we use deprecated instead*/
-# define PNG_PRIVATE \
- __attribute__((warning("This function is not exported by libpng.")))
-# else
-# define PNG_PRIVATE \
- __attribute__((__deprecated__))
-# endif
-# endif /* PNG_PRIVATE */
-# endif /* __GNUC__ */
-#endif /* PNG_PEDANTIC_WARNINGS */
-
-#ifndef PNG_DEPRECATED
-# define PNG_DEPRECATED /* Use of this function is deprecated */
-#endif
-#ifndef PNG_USE_RESULT
-# define PNG_USE_RESULT /* The result of this function must be checked */
-#endif
-#ifndef PNG_NORETURN
-# define PNG_NORETURN /* This function does not return */
-#endif
-#ifndef PNG_ALLOCATED
-# define PNG_ALLOCATED /* The result of the function is new memory */
-#endif
-#ifndef PNG_DEPSTRUCT
-# define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
-#endif
-#ifndef PNG_PRIVATE
-# define PNG_PRIVATE /* This is a private libpng function */
-#endif
-
-/* Users may want to use these so they are not private. Any library
- * functions that are passed far data must be model-independent.
- */
-
-/* memory model/platform independent fns */
-#ifndef PNG_ABORT
-# if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_))
-# define PNG_ABORT() ExitProcess(0)
-# else
-# define PNG_ABORT() abort()
-# endif
-#endif
-
-#ifdef USE_FAR_KEYWORD
-/* Use this to make far-to-near assignments */
-# define CHECK 1
-# define NOCHECK 0
-# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
-# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
-# define png_strcpy _fstrcpy
-# define png_strncpy _fstrncpy /* Added to v 1.2.6 */
-# define png_strlen _fstrlen
-# define png_memcmp _fmemcmp /* SJT: added */
-# define png_memcpy _fmemcpy
-# define png_memset _fmemset
-# define png_sprintf sprintf
-#else
-# if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_))
-# /* Favor Windows over C runtime fns */
-# define CVT_PTR(ptr) (ptr)
-# define CVT_PTR_NOCHECK(ptr) (ptr)
-# define png_strcpy lstrcpyA
-# define png_strncpy lstrcpynA
-# define png_strlen lstrlenA
-# define png_memcmp memcmp
-# define png_memcpy CopyMemory
-# define png_memset memset
-# define png_sprintf wsprintfA
-# else
-# define CVT_PTR(ptr) (ptr)
-# define CVT_PTR_NOCHECK(ptr) (ptr)
-# define png_strcpy strcpy
-# define png_strncpy strncpy /* Added to v 1.2.6 */
-# define png_strlen strlen
-# define png_memcmp memcmp /* SJT: added */
-# define png_memcpy memcpy
-# define png_memset memset
-# define png_sprintf sprintf
-# endif
-#endif
-
-#ifndef PNG_NO_SNPRINTF
-# ifdef _MSC_VER
-# define png_snprintf _snprintf /* Added to v 1.2.19 */
-# define png_snprintf2 _snprintf
-# define png_snprintf6 _snprintf
-# else
-# define png_snprintf snprintf /* Added to v 1.2.19 */
-# define png_snprintf2 snprintf
-# define png_snprintf6 snprintf
-# endif
-#else
- /* You don't have or don't want to use snprintf(). Caution: Using
- * sprintf instead of snprintf exposes your application to accidental
- * or malevolent buffer overflows. If you don't have snprintf()
- * as a general rule you should provide one (you can get one from
- * Portable OpenSSH).
- */
-# define png_snprintf(s1,n,fmt,x1) png_sprintf(s1,fmt,x1)
-# define png_snprintf2(s1,n,fmt,x1,x2) png_sprintf(s1,fmt,x1,x2)
-# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
- png_sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
-#endif
-
/* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
* and no smaller than png_uint_32. Casts from png_size_t or png_uint_32
* to png_alloc_size_t are not necessary; in fact, it is recommended
@@ -1535,18 +592,5 @@
# endif
# endif
#endif
-/* End of memory model/platform independent support */
-
-/* Just a little check that someone hasn't tried to define something
- * contradictory.
- */
-#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
-# undef PNG_ZBUF_SIZE
-# define PNG_ZBUF_SIZE 65536L
-#endif
-
-
-/* Added at libpng-1.2.8 */
-#endif /* PNG_VERSION_INFO_ONLY */
#endif /* PNGCONF_H */
diff --git a/pngdebug.h b/pngdebug.h
new file mode 100644
index 0000000..16f81fd
--- /dev/null
+++ b/pngdebug.h
@@ -0,0 +1,157 @@
+
+/* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
+ *
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * Last changed in libpng 1.5.0 [January 6, 2011]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+/* Define PNG_DEBUG at compile time for debugging information. Higher
+ * numbers for PNG_DEBUG mean more debugging information. This has
+ * only been added since version 0.95 so it is not implemented throughout
+ * libpng yet, but more support will be added as needed.
+ *
+ * png_debug[1-2]?(level, message ,arg{0-2})
+ * Expands to a statement (either a simple expression or a compound
+ * do..while(0) statement) that outputs a message with parameter
+ * substitution if PNG_DEBUG is defined to 2 or more. If PNG_DEBUG
+ * is undefined, 0 or 1 every png_debug expands to a simple expression
+ * (actually ((void)0)).
+ *
+ * level: level of detail of message, starting at 0. A level 'n'
+ * message is preceded by 'n' tab characters (not implemented
+ * on Microsoft compilers unless PNG_DEBUG_FILE is also
+ * defined, to allow debug DLL compilation with no standard IO).
+ * message: a printf(3) style text string. A trailing '\n' is added
+ * to the message.
+ * arg: 0 to 2 arguments for printf(3) style substitution in message.
+ */
+#ifndef PNGDEBUG_H
+#define PNGDEBUG_H
+/* These settings control the formatting of messages in png.c and pngerror.c */
+/* Moved to pngdebug.h at 1.5.0 */
+# ifndef PNG_LITERAL_SHARP
+# define PNG_LITERAL_SHARP 0x23
+# endif
+# ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
+# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
+# endif
+# ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
+# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
+# endif
+# ifndef PNG_STRING_NEWLINE
+# define PNG_STRING_NEWLINE "\n"
+# endif
+
+#ifdef PNG_DEBUG
+# if (PNG_DEBUG > 0)
+# if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
+# include <crtdbg.h>
+# if (PNG_DEBUG > 1)
+# ifndef _DEBUG
+# define _DEBUG
+# endif
+# ifndef png_debug
+# define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
+# endif
+# ifndef png_debug1
+# define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
+# endif
+# ifndef png_debug2
+# define png_debug2(l,m,p1,p2) \
+ _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
+# endif
+# endif
+# else /* PNG_DEBUG_FILE || !_MSC_VER */
+# ifndef PNG_STDIO_SUPPORTED
+# include <stdio.h> /* not included yet */
+# endif
+# ifndef PNG_DEBUG_FILE
+# define PNG_DEBUG_FILE stderr
+# endif /* PNG_DEBUG_FILE */
+
+# if (PNG_DEBUG > 1)
+/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
+ * non-ISO compilers
+ */
+# ifdef __STDC__
+# ifndef png_debug
+# define png_debug(l,m) \
+ do { \
+ int num_tabs=l; \
+ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
+ } while (0)
+# endif
+# ifndef png_debug1
+# define png_debug1(l,m,p1) \
+ do { \
+ int num_tabs=l; \
+ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
+ } while (0)
+# endif
+# ifndef png_debug2
+# define png_debug2(l,m,p1,p2) \
+ do { \
+ int num_tabs=l; \
+ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
+ } while (0)
+# endif
+# else /* __STDC __ */
+# ifndef png_debug
+# define png_debug(l,m) \
+ do { \
+ int num_tabs=l; \
+ char format[256]; \
+ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+ m,PNG_STRING_NEWLINE); \
+ fprintf(PNG_DEBUG_FILE,format); \
+ } while (0)
+# endif
+# ifndef png_debug1
+# define png_debug1(l,m,p1) \
+ do { \
+ int num_tabs=l; \
+ char format[256]; \
+ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+ m,PNG_STRING_NEWLINE); \
+ fprintf(PNG_DEBUG_FILE,format,p1); \
+ } while (0)
+# endif
+# ifndef png_debug2
+# define png_debug2(l,m,p1,p2) \
+ do { \
+ int num_tabs=l; \
+ char format[256]; \
+ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+ m,PNG_STRING_NEWLINE); \
+ fprintf(PNG_DEBUG_FILE,format,p1,p2); \
+ } while (0)
+# endif
+# endif /* __STDC __ */
+# endif /* (PNG_DEBUG > 1) */
+
+# endif /* _MSC_VER */
+# endif /* (PNG_DEBUG > 0) */
+#endif /* PNG_DEBUG */
+#ifndef png_debug
+# define png_debug(l, m) ((void)0)
+#endif
+#ifndef png_debug1
+# define png_debug1(l, m, p1) ((void)0)
+#endif
+#ifndef png_debug2
+# define png_debug2(l, m, p1, p2) ((void)0)
+#endif
+#endif /* PNGDEBUG_H */
diff --git a/pngerror.c b/pngerror.c
index 6b98f62..95002f8 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,8 +1,8 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
- * Last changed in libpng 1.4.8 [July 7, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.8 [February 1, 2011]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -16,18 +16,17 @@
* at each function.
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
-static void /* PRIVATE */
-png_default_error PNGARG((png_structp png_ptr,
- png_const_charp error_message)) PNG_NORETURN;
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
+static PNG_FUNCTION(void, png_default_error,PNGARG((png_structp png_ptr,
+ png_const_charp error_message)),PNG_NORETURN);
+
#ifdef PNG_WARNINGS_SUPPORTED
static void /* PRIVATE */
png_default_warning PNGARG((png_structp png_ptr,
- png_const_charp warning_message));
+ png_const_charp warning_message));
#endif /* PNG_WARNINGS_SUPPORTED */
/* This function is called whenever there is a fatal error. This function
@@ -36,42 +35,45 @@
* to replace the error function at run-time.
*/
#ifdef PNG_ERROR_TEXT_SUPPORTED
-void PNGAPI
-png_error(png_structp png_ptr, png_const_charp error_message)
+PNG_FUNCTION(void,PNGAPI
+png_error,(png_structp png_ptr, png_const_charp error_message),PNG_NORETURN)
{
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
char msg[16];
if (png_ptr != NULL)
{
- if (png_ptr->flags&
- (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
- {
- if (*error_message == PNG_LITERAL_SHARP)
- {
- /* Strip "#nnnn " from beginning of error message. */
- int offset;
- for (offset = 1; offset<15; offset++)
- if (error_message[offset] == ' ')
+ if (png_ptr->flags&
+ (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+ {
+ if (*error_message == PNG_LITERAL_SHARP)
+ {
+ /* Strip "#nnnn " from beginning of error message. */
+ int offset;
+ for (offset = 1; offset<15; offset++)
+ if (error_message[offset] == ' ')
break;
- if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
- {
- int i;
- for (i = 0; i < offset - 1; i++)
- msg[i] = error_message[i + 1];
- msg[i - 1] = '\0';
- error_message = msg;
- }
- else
- error_message += offset;
- }
- else
- {
- if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
- {
- msg[0] = '0';
- msg[1] = '\0';
- error_message = msg;
- }
+
+ if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+ {
+ int i;
+ for (i = 0; i < offset - 1; i++)
+ msg[i] = error_message[i + 1];
+ msg[i - 1] = '\0';
+ error_message = msg;
+ }
+
+ else
+ error_message += offset;
+ }
+
+ else
+ {
+ if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+ {
+ msg[0] = '0';
+ msg[1] = '\0';
+ error_message = msg;
+ }
}
}
}
@@ -84,10 +86,10 @@
png_default_error(png_ptr, error_message);
}
#else
-void PNGAPI
-png_err(png_structp png_ptr)
+PNG_FUNCTION(void,PNGAPI
+png_err,(png_structp png_ptr),PNG_NORETURN)
{
- /* Prior to 1.4.8 the error_fn received a NULL pointer, expressed
+ /* Prior to 1.5.2 the error_fn received a NULL pointer, expressed
* erroneously as '\0', instead of the empty string "". This was
* apparently an error, introduced in libpng-1.2.20, and png_default_error
* will crash in this case.
@@ -101,6 +103,107 @@
}
#endif /* PNG_ERROR_TEXT_SUPPORTED */
+/* Utility to safely appends strings to a buffer. This never errors out so
+ * error checking is not required in the caller.
+ */
+size_t
+png_safecat(png_charp buffer, size_t bufsize, size_t pos,
+ png_const_charp string)
+{
+ if (buffer != NULL && pos < bufsize)
+ {
+ if (string != NULL)
+ while (*string != '\0' && pos < bufsize-1)
+ buffer[pos++] = *string++;
+
+ buffer[pos] = '\0';
+ }
+
+ return pos;
+}
+
+#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_TIME_RFC1123_SUPPORTED)
+/* Utility to dump an unsigned value into a buffer, given a start pointer and
+ * and end pointer (which should point just *beyond* the end of the buffer!)
+ * Returns the pointer to the start of the formatted string.
+ */
+png_charp
+png_format_number(png_const_charp start, png_charp end, int format,
+ png_alloc_size_t number)
+{
+ int count = 0; /* number of digits output */
+ int mincount = 1; /* minimum number required */
+ int output = 0; /* digit output (for the fixed point format) */
+
+ *--end = '\0';
+
+ /* This is written so that the loop always runs at least once, even with
+ * number zero.
+ */
+ while (end > start && (number != 0 || count < mincount))
+ {
+
+ static const char digits[] = "0123456789ABCDEF";
+
+ switch (format)
+ {
+ case PNG_NUMBER_FORMAT_fixed:
+ /* Needs five digits (the fraction) */
+ mincount = 5;
+ if (output || number % 10 != 0)
+ {
+ *--end = digits[number % 10];
+ output = 1;
+ }
+ number /= 10;
+ break;
+
+ case PNG_NUMBER_FORMAT_02u:
+ /* Expects at least 2 digits. */
+ mincount = 2;
+ /* fall through */
+
+ case PNG_NUMBER_FORMAT_u:
+ *--end = digits[number % 10];
+ number /= 10;
+ break;
+
+ case PNG_NUMBER_FORMAT_02x:
+ /* This format expects at least two digits */
+ mincount = 2;
+ /* fall through */
+
+ case PNG_NUMBER_FORMAT_x:
+ *--end = digits[number & 0xf];
+ number >>= 4;
+ break;
+
+ default: /* an error */
+ number = 0;
+ break;
+ }
+
+ /* Keep track of the number of digits added */
+ ++count;
+
+ /* Float a fixed number here: */
+ if (format == PNG_NUMBER_FORMAT_fixed) if (count == 5) if (end > start)
+ {
+ /* End of the fraction, but maybe nothing was output? In that case
+ * drop the decimal point. If the number is a true zero handle that
+ * here.
+ */
+ if (output)
+ *--end = '.';
+ else if (number == 0) /* and !output */
+ *--end = '0';
+ }
+ }
+
+ return end;
+}
+#endif
+
#ifdef PNG_WARNINGS_SUPPORTED
/* This function is called whenever there is a non-fatal error. This function
* should not be changed. If there is a need to handle warnings differently,
@@ -115,22 +218,140 @@
{
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
if (png_ptr->flags&
- (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+ (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
#endif
- {
- if (*warning_message == PNG_LITERAL_SHARP)
- {
- for (offset = 1; offset < 15; offset++)
- if (warning_message[offset] == ' ')
+ {
+ if (*warning_message == PNG_LITERAL_SHARP)
+ {
+ for (offset = 1; offset < 15; offset++)
+ if (warning_message[offset] == ' ')
break;
- }
- }
+ }
+ }
}
if (png_ptr != NULL && png_ptr->warning_fn != NULL)
(*(png_ptr->warning_fn))(png_ptr, warning_message + offset);
else
png_default_warning(png_ptr, warning_message + offset);
}
+
+/* These functions support 'formatted' warning messages with up to
+ * PNG_WARNING_PARAMETER_COUNT parameters. In the format string the parameter
+ * is introduced by @<number>, where 'number' starts at 1. This follows the
+ * standard established by X/Open for internationalizable error messages.
+ */
+void
+png_warning_parameter(png_warning_parameters p, int number,
+ png_const_charp string)
+{
+ if (number > 0 && number <= PNG_WARNING_PARAMETER_COUNT)
+ (void)png_safecat(p[number-1], (sizeof p[number-1]), 0, string);
+}
+
+void
+png_warning_parameter_unsigned(png_warning_parameters p, int number, int format,
+ png_alloc_size_t value)
+{
+ char buffer[PNG_NUMBER_BUFFER_SIZE];
+ png_warning_parameter(p, number, PNG_FORMAT_NUMBER(buffer, format, value));
+}
+
+void
+png_warning_parameter_signed(png_warning_parameters p, int number, int format,
+ png_int_32 value)
+{
+ png_alloc_size_t u;
+ png_charp str;
+ char buffer[PNG_NUMBER_BUFFER_SIZE];
+
+ /* Avoid overflow by doing the negate in a png_alloc_size_t: */
+ u = (png_alloc_size_t)value;
+ if (value < 0)
+ u = ~u + 1;
+
+ str = PNG_FORMAT_NUMBER(buffer, format, u);
+
+ if (value < 0 && str > buffer)
+ *--str = '-';
+
+ png_warning_parameter(p, number, str);
+}
+
+void
+png_formatted_warning(png_structp png_ptr, png_warning_parameters p,
+ png_const_charp message)
+{
+ /* The internal buffer is just 192 bytes - enough for all our messages,
+ * overflow doesn't happen because this code checks! If someone figures
+ * out how to send us a message longer than 192 bytes, all that will
+ * happen is that the message will be truncated appropriately.
+ */
+ size_t i = 0; /* Index in the msg[] buffer: */
+ char msg[192];
+
+ /* Each iteration through the following loop writes at most one character
+ * to msg[i++] then returns here to validate that there is still space for
+ * the trailing '\0'. It may (in the case of a parameter) read more than
+ * one character from message[]; it must check for '\0' and continue to the
+ * test if it finds the end of string.
+ */
+ while (i<(sizeof msg)-1 && *message != '\0')
+ {
+ /* '@' at end of string is now just printed (previously it was skipped);
+ * it is an error in the calling code to terminate the string with @.
+ */
+ if (p != NULL && *message == '@' && message[1] != '\0')
+ {
+ int parameter_char = *++message; /* Consume the '@' */
+ static const char valid_parameters[] = "123456789";
+ int parameter = 0;
+
+ /* Search for the parameter digit, the index in the string is the
+ * parameter to use.
+ */
+ while (valid_parameters[parameter] != parameter_char &&
+ valid_parameters[parameter] != '\0')
+ ++parameter;
+
+ /* If the parameter digit is out of range it will just get printed. */
+ if (parameter < PNG_WARNING_PARAMETER_COUNT)
+ {
+ /* Append this parameter */
+ png_const_charp parm = p[parameter];
+ png_const_charp pend = p[parameter] + (sizeof p[parameter]);
+
+ /* No need to copy the trailing '\0' here, but there is no guarantee
+ * that parm[] has been initialized, so there is no guarantee of a
+ * trailing '\0':
+ */
+ while (i<(sizeof msg)-1 && *parm != '\0' && parm < pend)
+ msg[i++] = *parm++;
+
+ /* Consume the parameter digit too: */
+ ++message;
+ continue;
+ }
+
+ /* else not a parameter and there is a character after the @ sign; just
+ * copy that. This is known not to be '\0' because of the test above.
+ */
+ }
+
+ /* At this point *message can't be '\0', even in the bad parameter case
+ * above where there is a lone '@' at the end of the message string.
+ */
+ msg[i++] = *message++;
+ }
+
+ /* i is always less than (sizeof msg), so: */
+ msg[i] = '\0';
+
+ /* And this is the formatted message, it may be larger than
+ * PNG_MAX_ERROR_TEXT, but that is only used for 'chunk' errors and these are
+ * not (currently) formatted.
+ */
+ png_warning(png_ptr, msg);
+}
#endif /* PNG_WARNINGS_SUPPORTED */
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
@@ -138,9 +359,9 @@
png_benign_error(png_structp png_ptr, png_const_charp error_message)
{
if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
- png_warning(png_ptr, error_message);
+ png_warning(png_ptr, error_message);
else
- png_error(png_ptr, error_message);
+ png_error(png_ptr, error_message);
}
#endif
@@ -160,13 +381,16 @@
#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
static void /* PRIVATE */
png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
- error_message)
+ error_message)
{
- int iout = 0, iin = 0;
+ png_uint_32 chunk_name = png_ptr->chunk_name;
+ int iout = 0, ishift = 24;
- while (iin < 4)
+ while (ishift >= 0)
{
- int c = png_ptr->chunk_name[iin++];
+ int c = (int)(chunk_name >> ishift) & 0xff;
+
+ ishift -= 8;
if (isnonalpha(c))
{
buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
@@ -174,20 +398,23 @@
buffer[iout++] = png_digit[c & 0x0f];
buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET;
}
+
else
{
- buffer[iout++] = (png_byte)c;
+ buffer[iout++] = (char)c;
}
}
if (error_message == NULL)
buffer[iout] = '\0';
+
else
{
+ int iin = 0;
+
buffer[iout++] = ':';
buffer[iout++] = ' ';
- iin = 0;
while (iin < PNG_MAX_ERROR_TEXT-1 && error_message[iin] != '\0')
buffer[iout++] = error_message[iin++];
@@ -195,22 +422,24 @@
buffer[iout] = '\0';
}
}
+#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
-#ifdef PNG_READ_SUPPORTED
-void PNGAPI
-png_chunk_error(png_structp png_ptr, png_const_charp error_message)
+#if defined(PNG_READ_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)
+PNG_FUNCTION(void,PNGAPI
+png_chunk_error,(png_structp png_ptr, png_const_charp error_message),
+ PNG_NORETURN)
{
char msg[18+PNG_MAX_ERROR_TEXT];
if (png_ptr == NULL)
- png_error(png_ptr, error_message);
+ png_error(png_ptr, error_message);
+
else
{
- png_format_buffer(png_ptr, msg, error_message);
- png_error(png_ptr, msg);
+ png_format_buffer(png_ptr, msg, error_message);
+ png_error(png_ptr, msg);
}
}
-#endif /* PNG_READ_SUPPORTED */
-#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED && PNG_ERROR_TEXT_SUPPORTED */
#ifdef PNG_WARNINGS_SUPPORTED
void PNGAPI
@@ -218,11 +447,12 @@
{
char msg[18+PNG_MAX_ERROR_TEXT];
if (png_ptr == NULL)
- png_warning(png_ptr, warning_message);
+ png_warning(png_ptr, warning_message);
+
else
{
- png_format_buffer(png_ptr, msg, warning_message);
- png_warning(png_ptr, msg);
+ png_format_buffer(png_ptr, msg, warning_message);
+ png_warning(png_ptr, msg);
}
}
#endif /* PNG_WARNINGS_SUPPORTED */
@@ -232,14 +462,37 @@
void PNGAPI
png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message)
{
- if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
- png_chunk_warning(png_ptr, error_message);
- else
- png_chunk_error(png_ptr, error_message);
+ if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
+ png_chunk_warning(png_ptr, error_message);
+
+ else
+ png_chunk_error(png_ptr, error_message);
}
#endif
#endif /* PNG_READ_SUPPORTED */
+#ifdef PNG_ERROR_TEXT_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+PNG_FUNCTION(void,
+png_fixed_error,(png_structp png_ptr, png_const_charp name),PNG_NORETURN)
+{
+# define fixed_message "fixed point overflow in "
+# define fixed_message_ln ((sizeof fixed_message)-1)
+ int iin;
+ char msg[fixed_message_ln+PNG_MAX_ERROR_TEXT];
+ png_memcpy(msg, fixed_message, fixed_message_ln);
+ iin = 0;
+ if (name != NULL) while (iin < (PNG_MAX_ERROR_TEXT-1) && name[iin] != 0)
+ {
+ msg[fixed_message_ln + iin] = name[iin];
+ ++iin;
+ }
+ msg[fixed_message_ln + iin] = 0;
+ png_error(png_ptr, msg);
+}
+#endif
+#endif
+
#ifdef PNG_SETJMP_SUPPORTED
/* This API only exists if ANSI-C style error handling is used,
* otherwise it is necessary for png_default_error to be overridden.
@@ -252,7 +505,7 @@
return NULL;
png_ptr->longjmp_fn = longjmp_fn;
- return &png_ptr->jmpbuf;
+ return &png_ptr->longjmp_buffer;
}
#endif
@@ -261,63 +514,73 @@
* function is used by default, or if the program supplies NULL for the
* error function pointer in png_set_error_fn().
*/
-static void /* PRIVATE */
-png_default_error(png_structp png_ptr, png_const_charp error_message)
+static PNG_FUNCTION(void /* PRIVATE */,
+png_default_error,(png_structp png_ptr, png_const_charp error_message),
+ PNG_NORETURN)
{
#ifdef PNG_CONSOLE_IO_SUPPORTED
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
- if (*error_message == PNG_LITERAL_SHARP)
+ /* Check on NULL only added in 1.5.4 */
+ if (error_message != NULL && *error_message == PNG_LITERAL_SHARP)
{
- /* Strip "#nnnn " from beginning of error message. */
- int offset;
- char error_number[16];
- for (offset = 0; offset<15; offset++)
- {
+ /* Strip "#nnnn " from beginning of error message. */
+ int offset;
+ char error_number[16];
+ for (offset = 0; offset<15; offset++)
+ {
error_number[offset] = error_message[offset + 1];
if (error_message[offset] == ' ')
- break;
- }
- if ((offset > 1) && (offset < 15))
- {
- error_number[offset - 1] = '\0';
- fprintf(stderr, "libpng error no. %s: %s",
- error_number, error_message + offset + 1);
- fprintf(stderr, PNG_STRING_NEWLINE);
- }
- else
- {
- fprintf(stderr, "libpng error: %s, offset=%d",
- error_message, offset);
- fprintf(stderr, PNG_STRING_NEWLINE);
- }
+ break;
+ }
+
+ if ((offset > 1) && (offset < 15))
+ {
+ error_number[offset - 1] = '\0';
+ fprintf(stderr, "libpng error no. %s: %s",
+ error_number, error_message + offset + 1);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+
+ else
+ {
+ fprintf(stderr, "libpng error: %s, offset=%d",
+ error_message, offset);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
}
else
#endif
{
- fprintf(stderr, "libpng error: %s", error_message);
+ fprintf(stderr, "libpng error: %s", error_message ? error_message :
+ "undefined");
fprintf(stderr, PNG_STRING_NEWLINE);
}
+#else
+ PNG_UNUSED(error_message) /* Make compiler happy */
#endif
+ png_longjmp(png_ptr, 1);
+}
+PNG_FUNCTION(void,PNGAPI
+png_longjmp,(png_structp png_ptr, int val),PNG_NORETURN)
+{
#ifdef PNG_SETJMP_SUPPORTED
if (png_ptr && png_ptr->longjmp_fn)
{
# ifdef USE_FAR_KEYWORD
- {
- jmp_buf jmpbuf;
- png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
- png_ptr->longjmp_fn(jmpbuf, 1);
- }
+ {
+ jmp_buf tmp_jmpbuf;
+ png_memcpy(tmp_jmpbuf, png_ptr->longjmp_buffer, png_sizeof(jmp_buf));
+ png_ptr->longjmp_fn(tmp_jmpbuf, val);
+ }
+
# else
- png_ptr->longjmp_fn(png_ptr->jmpbuf, 1);
+ png_ptr->longjmp_fn(png_ptr->longjmp_buffer, val);
# endif
}
#endif
/* Here if not setjmp support or if png_ptr is null. */
PNG_ABORT();
-#ifndef PNG_CONSOLE_IO_SUPPORTED
- PNG_UNUSED(error_message) /* Make compiler happy */
-#endif
}
#ifdef PNG_WARNINGS_SUPPORTED
@@ -333,33 +596,36 @@
# ifdef PNG_ERROR_NUMBERS_SUPPORTED
if (*warning_message == PNG_LITERAL_SHARP)
{
- int offset;
- char warning_number[16];
- for (offset = 0; offset < 15; offset++)
- {
- warning_number[offset] = warning_message[offset + 1];
- if (warning_message[offset] == ' ')
+ int offset;
+ char warning_number[16];
+ for (offset = 0; offset < 15; offset++)
+ {
+ warning_number[offset] = warning_message[offset + 1];
+ if (warning_message[offset] == ' ')
break;
- }
- if ((offset > 1) && (offset < 15))
- {
- warning_number[offset + 1] = '\0';
- fprintf(stderr, "libpng warning no. %s: %s",
- warning_number, warning_message + offset);
- fprintf(stderr, PNG_STRING_NEWLINE);
- }
- else
- {
- fprintf(stderr, "libpng warning: %s",
- warning_message);
- fprintf(stderr, PNG_STRING_NEWLINE);
- }
+ }
+
+ if ((offset > 1) && (offset < 15))
+ {
+ warning_number[offset + 1] = '\0';
+ fprintf(stderr, "libpng warning no. %s: %s",
+ warning_number, warning_message + offset);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+
+ else
+ {
+ fprintf(stderr, "libpng warning: %s",
+ warning_message);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
}
else
# endif
+
{
- fprintf(stderr, "libpng warning: %s", warning_message);
- fprintf(stderr, PNG_STRING_NEWLINE);
+ fprintf(stderr, "libpng warning: %s", warning_message);
+ fprintf(stderr, PNG_STRING_NEWLINE);
}
#else
PNG_UNUSED(warning_message) /* Make compiler happy */
@@ -371,17 +637,22 @@
/* This function is called when the application wants to use another method
* of handling errors and warnings. Note that the error function MUST NOT
* return to the calling routine or serious problems will occur. The return
- * method used in the default routine calls longjmp(png_ptr->jmpbuf, 1)
+ * method used in the default routine calls longjmp(png_ptr->longjmp_buffer, 1)
*/
void PNGAPI
png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warning_fn)
+ png_error_ptr error_fn, png_error_ptr warning_fn)
{
if (png_ptr == NULL)
return;
+
png_ptr->error_ptr = error_ptr;
png_ptr->error_fn = error_fn;
+#ifdef PNG_WARNINGS_SUPPORTED
png_ptr->warning_fn = warning_fn;
+#else
+ PNG_UNUSED(warning_fn)
+#endif
}
@@ -394,6 +665,7 @@
{
if (png_ptr == NULL)
return NULL;
+
return ((png_voidp)png_ptr->error_ptr);
}
@@ -404,8 +676,9 @@
{
if (png_ptr != NULL)
{
- png_ptr->flags &=
- ((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
+ png_ptr->flags &=
+ ((~(PNG_FLAG_STRIP_ERROR_NUMBERS |
+ PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
}
}
#endif
diff --git a/pngget.c b/pngget.c
index ac5e27c..43400cd 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct
*
- * Last changed in libpng 1.4.6 [April 8, 2011]
+ * Last changed in libpng 1.5.7 [December 15, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -12,11 +12,10 @@
*
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
png_uint_32 PNGAPI
png_get_valid(png_const_structp png_ptr, png_const_infop info_ptr,
png_uint_32 flag)
@@ -24,8 +23,7 @@
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->valid & flag);
- else
- return(0);
+ return(0);
}
png_size_t PNGAPI
@@ -34,8 +32,7 @@
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->rowbytes);
- else
- return(0);
+ return(0);
}
#ifdef PNG_INFO_IMAGE_SUPPORTED
@@ -45,8 +42,7 @@
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->row_pointers);
- else
- return(0);
+ return(0);
}
#endif
@@ -118,220 +114,273 @@
png_uint_32 PNGAPI
png_get_x_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
{
- if (png_ptr != NULL && info_ptr != NULL)
#ifdef PNG_pHYs_SUPPORTED
- if (info_ptr->valid & PNG_INFO_pHYs)
- {
- png_debug1(1, "in %s retrieval function", "png_get_x_pixels_per_meter");
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ png_debug1(1, "in %s retrieval function",
+ "png_get_x_pixels_per_meter");
- if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
- return (0);
-
- else
- return (info_ptr->x_pixels_per_unit);
- }
-#else
- return (0);
+ if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
+ return (info_ptr->x_pixels_per_unit);
+ }
#endif
+
return (0);
}
png_uint_32 PNGAPI
png_get_y_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
{
- if (png_ptr != NULL && info_ptr != NULL)
#ifdef PNG_pHYs_SUPPORTED
- if (info_ptr->valid & PNG_INFO_pHYs)
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
{
- png_debug1(1, "in %s retrieval function", "png_get_y_pixels_per_meter");
+ png_debug1(1, "in %s retrieval function",
+ "png_get_y_pixels_per_meter");
- if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
- return (0);
-
- else
- return (info_ptr->y_pixels_per_unit);
+ if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
+ return (info_ptr->y_pixels_per_unit);
}
-#else
- return (0);
#endif
+
return (0);
}
png_uint_32 PNGAPI
png_get_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
{
- if (png_ptr != NULL && info_ptr != NULL)
#ifdef PNG_pHYs_SUPPORTED
- if (info_ptr->valid & PNG_INFO_pHYs)
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
{
png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
- if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER ||
- info_ptr->x_pixels_per_unit != info_ptr->y_pixels_per_unit)
- return (0);
-
- else
- return (info_ptr->x_pixels_per_unit);
+ if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER &&
+ info_ptr->x_pixels_per_unit == info_ptr->y_pixels_per_unit)
+ return (info_ptr->x_pixels_per_unit);
}
-#else
- return (0);
#endif
+
return (0);
}
#ifdef PNG_FLOATING_POINT_SUPPORTED
float PNGAPI
png_get_pixel_aspect_ratio(png_const_structp png_ptr, png_const_infop info_ptr)
- {
- if (png_ptr != NULL && info_ptr != NULL)
-#ifdef PNG_pHYs_SUPPORTED
-
- if (info_ptr->valid & PNG_INFO_pHYs)
+{
+#ifdef PNG_READ_pHYs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
{
png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
- if (info_ptr->x_pixels_per_unit == 0)
- return ((float)0.0);
-
- else
+ if (info_ptr->x_pixels_per_unit != 0)
return ((float)((float)info_ptr->y_pixels_per_unit
- /(float)info_ptr->x_pixels_per_unit));
+ /(float)info_ptr->x_pixels_per_unit));
}
-#else
- return (0.0);
#endif
+
return ((float)0.0);
}
#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+png_fixed_point PNGAPI
+png_get_pixel_aspect_ratio_fixed(png_const_structp png_ptr,
+ png_const_infop info_ptr)
+{
+#ifdef PNG_READ_pHYs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)
+ && info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0
+ && info_ptr->x_pixels_per_unit <= PNG_UINT_31_MAX
+ && info_ptr->y_pixels_per_unit <= PNG_UINT_31_MAX)
+ {
+ png_fixed_point res;
+
+ png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio_fixed");
+
+ /* The following casts work because a PNG 4 byte integer only has a valid
+ * range of 0..2^31-1; otherwise the cast might overflow.
+ */
+ if (png_muldiv(&res, (png_int_32)info_ptr->y_pixels_per_unit, PNG_FP_1,
+ (png_int_32)info_ptr->x_pixels_per_unit))
+ return res;
+ }
+#endif
+
+ return 0;
+}
+#endif
+
png_int_32 PNGAPI
png_get_x_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr)
{
- if (png_ptr != NULL && info_ptr != NULL)
#ifdef PNG_oFFs_SUPPORTED
-
- if (info_ptr->valid & PNG_INFO_oFFs)
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
{
png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
- if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
- return (0);
-
- else
- return (info_ptr->x_offset);
+ if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
+ return (info_ptr->x_offset);
}
-#else
- return (0);
#endif
+
return (0);
}
png_int_32 PNGAPI
png_get_y_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr)
{
- if (png_ptr != NULL && info_ptr != NULL)
-
#ifdef PNG_oFFs_SUPPORTED
- if (info_ptr->valid & PNG_INFO_oFFs)
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
{
png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
- if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
- return (0);
-
- else
- return (info_ptr->y_offset);
+ if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
+ return (info_ptr->y_offset);
}
-#else
- return (0);
#endif
+
return (0);
}
png_int_32 PNGAPI
png_get_x_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr)
{
- if (png_ptr != NULL && info_ptr != NULL)
-
#ifdef PNG_oFFs_SUPPORTED
- if (info_ptr->valid & PNG_INFO_oFFs)
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
{
- png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
+ png_debug1(1, "in %s retrieval function", "png_get_x_offset_pixels");
- if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
- return (0);
-
- else
- return (info_ptr->x_offset);
+ if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
+ return (info_ptr->x_offset);
}
-#else
- return (0);
#endif
+
return (0);
}
png_int_32 PNGAPI
png_get_y_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr)
{
- if (png_ptr != NULL && info_ptr != NULL)
-
#ifdef PNG_oFFs_SUPPORTED
- if (info_ptr->valid & PNG_INFO_oFFs)
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
{
- png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
+ png_debug1(1, "in %s retrieval function", "png_get_y_offset_pixels");
- if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
- return (0);
-
- else
- return (info_ptr->y_offset);
+ if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
+ return (info_ptr->y_offset);
}
-#else
- return (0);
#endif
+
return (0);
}
-#if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED)
+#ifdef PNG_INCH_CONVERSIONS_SUPPORTED
+static png_uint_32
+ppi_from_ppm(png_uint_32 ppm)
+{
+#if 0
+ /* The conversion is *(2.54/100), in binary (32 digits):
+ * .00000110100000001001110101001001
+ */
+ png_uint_32 t1001, t1101;
+ ppm >>= 1; /* .1 */
+ t1001 = ppm + (ppm >> 3); /* .1001 */
+ t1101 = t1001 + (ppm >> 1); /* .1101 */
+ ppm >>= 20; /* .000000000000000000001 */
+ t1101 += t1101 >> 15; /* .1101000000000001101 */
+ t1001 >>= 11; /* .000000000001001 */
+ t1001 += t1001 >> 12; /* .000000000001001000000001001 */
+ ppm += t1001; /* .000000000001001000001001001 */
+ ppm += t1101; /* .110100000001001110101001001 */
+ return (ppm + 16) >> 5;/* .00000110100000001001110101001001 */
+#else
+ /* The argument is a PNG unsigned integer, so it is not permitted
+ * to be bigger than 2^31.
+ */
+ png_fixed_point result;
+ if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (png_int_32)ppm, 127,
+ 5000))
+ return result;
+
+ /* Overflow. */
+ return 0;
+#endif
+}
+
png_uint_32 PNGAPI
png_get_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
{
- return ((png_uint_32)((float)png_get_pixels_per_meter(png_ptr, info_ptr)
- *.0254 +.5));
+ return ppi_from_ppm(png_get_pixels_per_meter(png_ptr, info_ptr));
}
png_uint_32 PNGAPI
png_get_x_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
{
- return ((png_uint_32)((float)png_get_x_pixels_per_meter(png_ptr, info_ptr)
- *.0254 +.5));
+ return ppi_from_ppm(png_get_x_pixels_per_meter(png_ptr, info_ptr));
}
png_uint_32 PNGAPI
png_get_y_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
{
- return ((png_uint_32)((float)png_get_y_pixels_per_meter(png_ptr, info_ptr)
- *.0254 +.5));
+ return ppi_from_ppm(png_get_y_pixels_per_meter(png_ptr, info_ptr));
}
+#ifdef PNG_FIXED_POINT_SUPPORTED
+static png_fixed_point
+png_fixed_inches_from_microns(png_structp png_ptr, png_int_32 microns)
+{
+ /* Convert from metres * 1,000,000 to inches * 100,000, meters to
+ * inches is simply *(100/2.54), so we want *(10/2.54) == 500/127.
+ * Notice that this can overflow - a warning is output and 0 is
+ * returned.
+ */
+ return png_muldiv_warn(png_ptr, microns, 500, 127);
+}
+
+png_fixed_point PNGAPI
+png_get_x_offset_inches_fixed(png_structp png_ptr,
+ png_const_infop info_ptr)
+{
+ return png_fixed_inches_from_microns(png_ptr,
+ png_get_x_offset_microns(png_ptr, info_ptr));
+}
+#endif
+
+#ifdef PNG_FIXED_POINT_SUPPORTED
+png_fixed_point PNGAPI
+png_get_y_offset_inches_fixed(png_structp png_ptr,
+ png_const_infop info_ptr)
+{
+ return png_fixed_inches_from_microns(png_ptr,
+ png_get_y_offset_microns(png_ptr, info_ptr));
+}
+#endif
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
float PNGAPI
png_get_x_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
{
- return ((float)png_get_x_offset_microns(png_ptr, info_ptr)
- *.00003937);
+ /* To avoid the overflow do the conversion directly in floating
+ * point.
+ */
+ return (float)(png_get_x_offset_microns(png_ptr, info_ptr) * .00003937);
}
+#endif
+#ifdef PNG_FLOATING_POINT_SUPPORTED
float PNGAPI
png_get_y_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
{
- return ((float)png_get_y_offset_microns(png_ptr, info_ptr)
- *.00003937);
+ /* To avoid the overflow do the conversion directly in floating
+ * point.
+ */
+ return (float)(png_get_y_offset_microns(png_ptr, info_ptr) * .00003937);
}
+#endif
#ifdef PNG_pHYs_SUPPORTED
png_uint_32 PNGAPI
png_get_pHYs_dpi(png_const_structp png_ptr, png_const_infop info_ptr,
- png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
+ png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
{
png_uint_32 retval = 0;
@@ -344,15 +393,18 @@
*res_x = info_ptr->x_pixels_per_unit;
retval |= PNG_INFO_pHYs;
}
+
if (res_y != NULL)
{
*res_y = info_ptr->y_pixels_per_unit;
retval |= PNG_INFO_pHYs;
}
+
if (unit_type != NULL)
{
*unit_type = (int)info_ptr->phys_unit_type;
retval |= PNG_INFO_pHYs;
+
if (*unit_type == 1)
{
if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50);
@@ -360,10 +412,11 @@
}
}
}
+
return (retval);
}
#endif /* PNG_pHYs_SUPPORTED */
-#endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */
+#endif /* PNG_INCH_CONVERSIONS_SUPPORTED */
/* png_get_channels really belongs in here, too, but it's been around longer */
@@ -374,17 +427,17 @@
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->channels);
- else
- return (0);
+
+ return (0);
}
-png_bytep PNGAPI
+png_const_bytep PNGAPI
png_get_signature(png_const_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->signature);
- else
- return (NULL);
+
+ return (NULL);
}
#ifdef PNG_bKGD_SUPPORTED
@@ -393,115 +446,213 @@
png_color_16p *background)
{
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
- && background != NULL)
+ && background != NULL)
{
png_debug1(1, "in %s retrieval function", "bKGD");
*background = &(info_ptr->background);
return (PNG_INFO_bKGD);
}
+
return (0);
}
#endif
#ifdef PNG_cHRM_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
+/* The XYZ APIs were added in 1.5.5 to take advantage of the code added at the
+ * same time to correct the rgb grayscale coefficient defaults obtained from the
+ * cHRM chunk in 1.5.4
+ */
+png_uint_32 PNGFAPI
+png_get_cHRM_XYZ_fixed(png_structp png_ptr, png_const_infop info_ptr,
+ png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
+ png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
+ png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
+ png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
+ png_fixed_point *int_blue_Z)
+{
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
+ {
+ png_xy xy;
+ png_XYZ XYZ;
+
+ png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
+
+ xy.whitex = info_ptr->x_white;
+ xy.whitey = info_ptr->y_white;
+ xy.redx = info_ptr->x_red;
+ xy.redy = info_ptr->y_red;
+ xy.greenx = info_ptr->x_green;
+ xy.greeny = info_ptr->y_green;
+ xy.bluex = info_ptr->x_blue;
+ xy.bluey = info_ptr->y_blue;
+
+ /* The *_checked function handles error reporting, so just return 0 if
+ * there is a failure here.
+ */
+ if (png_XYZ_from_xy_checked(png_ptr, &XYZ, xy))
+ {
+ if (int_red_X != NULL)
+ *int_red_X = XYZ.redX;
+ if (int_red_Y != NULL)
+ *int_red_Y = XYZ.redY;
+ if (int_red_Z != NULL)
+ *int_red_Z = XYZ.redZ;
+ if (int_green_X != NULL)
+ *int_green_X = XYZ.greenX;
+ if (int_green_Y != NULL)
+ *int_green_Y = XYZ.greenY;
+ if (int_green_Z != NULL)
+ *int_green_Z = XYZ.greenZ;
+ if (int_blue_X != NULL)
+ *int_blue_X = XYZ.blueX;
+ if (int_blue_Y != NULL)
+ *int_blue_Y = XYZ.blueY;
+ if (int_blue_Z != NULL)
+ *int_blue_Z = XYZ.blueZ;
+
+ return (PNG_INFO_cHRM);
+ }
+ }
+
+ return (0);
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_cHRM(png_const_structp png_ptr, png_const_infop info_ptr,
- double *white_x, double *white_y, double *red_x, double *red_y,
- double *green_x, double *green_y, double *blue_x, double *blue_y)
+ double *white_x, double *white_y, double *red_x, double *red_y,
+ double *green_x, double *green_y, double *blue_x, double *blue_y)
{
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
{
png_debug1(1, "in %s retrieval function", "cHRM");
if (white_x != NULL)
- *white_x = (double)info_ptr->x_white;
+ *white_x = png_float(png_ptr, info_ptr->x_white, "cHRM white X");
if (white_y != NULL)
- *white_y = (double)info_ptr->y_white;
+ *white_y = png_float(png_ptr, info_ptr->y_white, "cHRM white Y");
if (red_x != NULL)
- *red_x = (double)info_ptr->x_red;
+ *red_x = png_float(png_ptr, info_ptr->x_red, "cHRM red X");
if (red_y != NULL)
- *red_y = (double)info_ptr->y_red;
+ *red_y = png_float(png_ptr, info_ptr->y_red, "cHRM red Y");
if (green_x != NULL)
- *green_x = (double)info_ptr->x_green;
+ *green_x = png_float(png_ptr, info_ptr->x_green, "cHRM green X");
if (green_y != NULL)
- *green_y = (double)info_ptr->y_green;
+ *green_y = png_float(png_ptr, info_ptr->y_green, "cHRM green Y");
if (blue_x != NULL)
- *blue_x = (double)info_ptr->x_blue;
+ *blue_x = png_float(png_ptr, info_ptr->x_blue, "cHRM blue X");
if (blue_y != NULL)
- *blue_y = (double)info_ptr->y_blue;
+ *blue_y = png_float(png_ptr, info_ptr->y_blue, "cHRM blue Y");
return (PNG_INFO_cHRM);
}
+
return (0);
}
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
+
+png_uint_32 PNGAPI
+png_get_cHRM_XYZ(png_structp png_ptr, png_const_infop info_ptr,
+ double *red_X, double *red_Y, double *red_Z, double *green_X,
+ double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
+ double *blue_Z)
+{
+ png_XYZ XYZ;
+
+ if (png_get_cHRM_XYZ_fixed(png_ptr, info_ptr,
+ &XYZ.redX, &XYZ.redY, &XYZ.redZ, &XYZ.greenX, &XYZ.greenY, &XYZ.greenZ,
+ &XYZ.blueX, &XYZ.blueY, &XYZ.blueZ) & PNG_INFO_cHRM)
+ {
+ if (red_X != NULL)
+ *red_X = png_float(png_ptr, XYZ.redX, "cHRM red X");
+ if (red_Y != NULL)
+ *red_Y = png_float(png_ptr, XYZ.redY, "cHRM red Y");
+ if (red_Z != NULL)
+ *red_Z = png_float(png_ptr, XYZ.redZ, "cHRM red Z");
+ if (green_X != NULL)
+ *green_X = png_float(png_ptr, XYZ.greenX, "cHRM green X");
+ if (green_Y != NULL)
+ *green_Y = png_float(png_ptr, XYZ.greenY, "cHRM green Y");
+ if (green_Z != NULL)
+ *green_Z = png_float(png_ptr, XYZ.greenZ, "cHRM green Z");
+ if (blue_X != NULL)
+ *blue_X = png_float(png_ptr, XYZ.blueX, "cHRM blue X");
+ if (blue_Y != NULL)
+ *blue_Y = png_float(png_ptr, XYZ.blueY, "cHRM blue Y");
+ if (blue_Z != NULL)
+ *blue_Z = png_float(png_ptr, XYZ.blueZ, "cHRM blue Z");
+ return (PNG_INFO_cHRM);
+ }
+
+ return (0);
+}
+# endif
+
+# ifdef PNG_FIXED_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_cHRM_fixed(png_const_structp png_ptr, png_const_infop info_ptr,
- png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
- png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
- png_fixed_point *blue_x, png_fixed_point *blue_y)
+ png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
+ png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
+ png_fixed_point *blue_x, png_fixed_point *blue_y)
{
png_debug1(1, "in %s retrieval function", "cHRM");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
{
if (white_x != NULL)
- *white_x = info_ptr->int_x_white;
+ *white_x = info_ptr->x_white;
if (white_y != NULL)
- *white_y = info_ptr->int_y_white;
+ *white_y = info_ptr->y_white;
if (red_x != NULL)
- *red_x = info_ptr->int_x_red;
+ *red_x = info_ptr->x_red;
if (red_y != NULL)
- *red_y = info_ptr->int_y_red;
+ *red_y = info_ptr->y_red;
if (green_x != NULL)
- *green_x = info_ptr->int_x_green;
+ *green_x = info_ptr->x_green;
if (green_y != NULL)
- *green_y = info_ptr->int_y_green;
+ *green_y = info_ptr->y_green;
if (blue_x != NULL)
- *blue_x = info_ptr->int_x_blue;
+ *blue_x = info_ptr->x_blue;
if (blue_y != NULL)
- *blue_y = info_ptr->int_y_blue;
+ *blue_y = info_ptr->y_blue;
return (PNG_INFO_cHRM);
}
+
return (0);
}
-#endif
+# endif
#endif
#ifdef PNG_gAMA_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-png_uint_32 PNGAPI
-png_get_gAMA(png_const_structp png_ptr, png_const_infop info_ptr, double *file_gamma)
-{
- png_debug1(1, "in %s retrieval function", "gAMA");
-
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
- && file_gamma != NULL)
- {
- *file_gamma = (double)info_ptr->gamma;
- return (PNG_INFO_gAMA);
- }
- return (0);
-}
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
-png_uint_32 PNGAPI
+png_uint_32 PNGFAPI
png_get_gAMA_fixed(png_const_structp png_ptr, png_const_infop info_ptr,
- png_fixed_point *int_file_gamma)
+ png_fixed_point *file_gamma)
{
png_debug1(1, "in %s retrieval function", "gAMA");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
- && int_file_gamma != NULL)
+ && file_gamma != NULL)
{
- *int_file_gamma = info_ptr->int_gamma;
+ *file_gamma = info_ptr->gamma;
return (PNG_INFO_gAMA);
}
+
return (0);
}
-#endif
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_gAMA(png_const_structp png_ptr, png_const_infop info_ptr,
+ double *file_gamma)
+{
+ png_fixed_point igamma;
+ png_uint_32 ok = png_get_gAMA_fixed(png_ptr, info_ptr, &igamma);
+
+ if (ok)
+ *file_gamma = png_float(png_ptr, igamma, "png_get_gAMA");
+
+ return ok;
+}
+
+# endif
#endif
#ifdef PNG_sRGB_SUPPORTED
@@ -512,11 +663,12 @@
png_debug1(1, "in %s retrieval function", "sRGB");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
- && file_srgb_intent != NULL)
+ && file_srgb_intent != NULL)
{
*file_srgb_intent = (int)info_ptr->srgb_intent;
return (PNG_INFO_sRGB);
}
+
return (0);
}
#endif
@@ -524,23 +676,25 @@
#ifdef PNG_iCCP_SUPPORTED
png_uint_32 PNGAPI
png_get_iCCP(png_const_structp png_ptr, png_const_infop info_ptr,
- png_charpp name, int *compression_type,
- png_charpp profile, png_uint_32 *proflen)
+ png_charpp name, int *compression_type,
+ png_bytepp profile, png_uint_32 *proflen)
{
png_debug1(1, "in %s retrieval function", "iCCP");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
- && name != NULL && profile != NULL && proflen != NULL)
+ && name != NULL && compression_type != NULL && profile != NULL &&
+ proflen != NULL)
{
*name = info_ptr->iccp_name;
*profile = info_ptr->iccp_profile;
/* Compression_type is a dummy so the API won't have to change
* if we introduce multiple compression types later.
*/
- *proflen = (int)info_ptr->iccp_proflen;
- *compression_type = (int)info_ptr->iccp_compression;
+ *proflen = info_ptr->iccp_proflen;
+ *compression_type = info_ptr->iccp_compression;
return (PNG_INFO_iCCP);
}
+
return (0);
}
#endif
@@ -548,13 +702,14 @@
#ifdef PNG_sPLT_SUPPORTED
png_uint_32 PNGAPI
png_get_sPLT(png_const_structp png_ptr, png_const_infop info_ptr,
- png_sPLT_tpp spalettes)
+ png_sPLT_tpp spalettes)
{
if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
{
- *spalettes = info_ptr->splt_palettes;
- return ((png_uint_32)info_ptr->splt_palettes_num);
+ *spalettes = info_ptr->splt_palettes;
+ return ((png_uint_32)info_ptr->splt_palettes_num);
}
+
return (0);
}
#endif
@@ -567,20 +722,21 @@
png_debug1(1, "in %s retrieval function", "hIST");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
- && hist != NULL)
+ && hist != NULL)
{
*hist = info_ptr->hist;
return (PNG_INFO_hIST);
}
+
return (0);
}
#endif
png_uint_32 PNGAPI
png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
- png_uint_32 *width, png_uint_32 *height, int *bit_depth,
- int *color_type, int *interlace_type, int *compression_type,
- int *filter_type)
+ png_uint_32 *width, png_uint_32 *height, int *bit_depth,
+ int *color_type, int *interlace_type, int *compression_type,
+ int *filter_type)
{
png_debug1(1, "in %s retrieval function", "IHDR");
@@ -618,18 +774,19 @@
#ifdef PNG_oFFs_SUPPORTED
png_uint_32 PNGAPI
png_get_oFFs(png_const_structp png_ptr, png_const_infop info_ptr,
- png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
+ png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
{
png_debug1(1, "in %s retrieval function", "oFFs");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
- && offset_x != NULL && offset_y != NULL && unit_type != NULL)
+ && offset_x != NULL && offset_y != NULL && unit_type != NULL)
{
*offset_x = info_ptr->x_offset;
*offset_y = info_ptr->y_offset;
*unit_type = (int)info_ptr->offset_unit_type;
return (PNG_INFO_oFFs);
}
+
return (0);
}
#endif
@@ -637,8 +794,8 @@
#ifdef PNG_pCAL_SUPPORTED
png_uint_32 PNGAPI
png_get_pCAL(png_const_structp png_ptr, png_const_infop info_ptr,
- png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
- png_charp *units, png_charpp *params)
+ png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
+ png_charp *units, png_charpp *params)
{
png_debug1(1, "in %s retrieval function", "pCAL");
@@ -655,57 +812,78 @@
*params = info_ptr->pcal_params;
return (PNG_INFO_pCAL);
}
+
return (0);
}
#endif
#ifdef PNG_sCAL_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
+# ifdef PNG_FIXED_POINT_SUPPORTED
+# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+png_uint_32 PNGAPI
+png_get_sCAL_fixed(png_structp png_ptr, png_const_infop info_ptr,
+ int *unit, png_fixed_point *width, png_fixed_point *height)
+{
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_sCAL))
+ {
+ *unit = info_ptr->scal_unit;
+ /*TODO: make this work without FP support */
+ *width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width");
+ *height = png_fixed(png_ptr, atof(info_ptr->scal_s_height),
+ "sCAL height");
+ return (PNG_INFO_sCAL);
+ }
+
+ return(0);
+}
+# endif /* FLOATING_ARITHMETIC */
+# endif /* FIXED_POINT */
+# ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_sCAL(png_const_structp png_ptr, png_const_infop info_ptr,
- int *unit, double *width, double *height)
+ int *unit, double *width, double *height)
{
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_sCAL))
- {
- *unit = info_ptr->scal_unit;
- *width = info_ptr->scal_pixel_width;
- *height = info_ptr->scal_pixel_height;
- return (PNG_INFO_sCAL);
- }
- return(0);
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_sCAL))
+ {
+ *unit = info_ptr->scal_unit;
+ *width = atof(info_ptr->scal_s_width);
+ *height = atof(info_ptr->scal_s_height);
+ return (PNG_INFO_sCAL);
+ }
+
+ return(0);
}
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
+# endif /* FLOATING POINT */
png_uint_32 PNGAPI
png_get_sCAL_s(png_const_structp png_ptr, png_const_infop info_ptr,
- int *unit, png_charpp width, png_charpp height)
+ int *unit, png_charpp width, png_charpp height)
{
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_sCAL))
- {
- *unit = info_ptr->scal_unit;
- *width = info_ptr->scal_s_width;
- *height = info_ptr->scal_s_height;
- return (PNG_INFO_sCAL);
- }
- return(0);
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_sCAL))
+ {
+ *unit = info_ptr->scal_unit;
+ *width = info_ptr->scal_s_width;
+ *height = info_ptr->scal_s_height;
+ return (PNG_INFO_sCAL);
+ }
+
+ return(0);
}
-#endif
-#endif
-#endif
+#endif /* sCAL */
#ifdef PNG_pHYs_SUPPORTED
png_uint_32 PNGAPI
png_get_pHYs(png_const_structp png_ptr, png_const_infop info_ptr,
- png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
+ png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
{
png_uint_32 retval = 0;
png_debug1(1, "in %s retrieval function", "pHYs");
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_pHYs))
+ (info_ptr->valid & PNG_INFO_pHYs))
{
if (res_x != NULL)
{
@@ -725,14 +903,14 @@
retval |= PNG_INFO_pHYs;
}
}
+
return (retval);
}
-#endif
+#endif /* pHYs */
png_uint_32 PNGAPI
png_get_PLTE(png_const_structp png_ptr, png_const_infop info_ptr,
- png_colorp *palette,
- int *num_palette)
+ png_colorp *palette, int *num_palette)
{
png_debug1(1, "in %s retrieval function", "PLTE");
@@ -744,6 +922,7 @@
png_debug1(3, "num_palette = %d", *num_palette);
return (PNG_INFO_PLTE);
}
+
return (0);
}
@@ -755,11 +934,12 @@
png_debug1(1, "in %s retrieval function", "sBIT");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
- && sig_bit != NULL)
+ && sig_bit != NULL)
{
*sig_bit = &(info_ptr->sig_bit);
return (PNG_INFO_sBIT);
}
+
return (0);
}
#endif
@@ -771,9 +951,8 @@
{
if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
{
- png_debug1(1, "in %s retrieval function",
- (png_ptr->chunk_name[0] == '\0' ? "text"
- : (png_const_charp)png_ptr->chunk_name));
+ png_debug1(1, "in 0x%lx retrieval function",
+ (unsigned long)png_ptr->chunk_name);
if (text_ptr != NULL)
*text_ptr = info_ptr->text;
@@ -783,16 +962,17 @@
return ((png_uint_32)info_ptr->num_text);
}
+
if (num_text != NULL)
- *num_text = 0;
+ *num_text = 0;
+
return(0);
}
#endif
#ifdef PNG_tIME_SUPPORTED
png_uint_32 PNGAPI
-png_get_tIME(png_const_structp png_ptr, png_infop info_ptr,
- png_timep *mod_time)
+png_get_tIME(png_const_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
{
png_debug1(1, "in %s retrieval function", "tIME");
@@ -802,6 +982,7 @@
*mod_time = &(info_ptr->mod_time);
return (PNG_INFO_tIME);
}
+
return (0);
}
#endif
@@ -809,7 +990,7 @@
#ifdef PNG_tRNS_SUPPORTED
png_uint_32 PNGAPI
png_get_tRNS(png_const_structp png_ptr, png_infop info_ptr,
- png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
+ png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
{
png_uint_32 retval = 0;
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
@@ -818,55 +999,59 @@
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
- if (trans_alpha != NULL)
- {
- *trans_alpha = info_ptr->trans_alpha;
- retval |= PNG_INFO_tRNS;
- }
+ if (trans_alpha != NULL)
+ {
+ *trans_alpha = info_ptr->trans_alpha;
+ retval |= PNG_INFO_tRNS;
+ }
- if (trans_color != NULL)
- *trans_color = &(info_ptr->trans_color);
+ if (trans_color != NULL)
+ *trans_color = &(info_ptr->trans_color);
}
+
else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
{
- if (trans_color != NULL)
- {
- *trans_color = &(info_ptr->trans_color);
- retval |= PNG_INFO_tRNS;
- }
+ if (trans_color != NULL)
+ {
+ *trans_color = &(info_ptr->trans_color);
+ retval |= PNG_INFO_tRNS;
+ }
- if (trans_alpha != NULL)
- *trans_alpha = NULL;
+ if (trans_alpha != NULL)
+ *trans_alpha = NULL;
}
+
if (num_trans != NULL)
{
*num_trans = info_ptr->num_trans;
retval |= PNG_INFO_tRNS;
}
}
+
return (retval);
}
#endif
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
-png_uint_32 PNGAPI
+int PNGAPI
png_get_unknown_chunks(png_const_structp png_ptr, png_const_infop info_ptr,
- png_unknown_chunkpp unknowns)
+ png_unknown_chunkpp unknowns)
{
if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
{
- *unknowns = info_ptr->unknown_chunks;
- return ((png_uint_32)info_ptr->unknown_chunks_num);
+ *unknowns = info_ptr->unknown_chunks;
+ return info_ptr->unknown_chunks_num;
}
+
return (0);
}
#endif
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
png_byte PNGAPI
-png_get_rgb_to_gray_status(png_const_structp png_ptr)
+png_get_rgb_to_gray_status (png_const_structp png_ptr)
{
- return (png_byte)(png_ptr? png_ptr->rgb_to_gray_status : 0);
+ return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0);
}
#endif
@@ -874,58 +1059,66 @@
png_voidp PNGAPI
png_get_user_chunk_ptr(png_const_structp png_ptr)
{
- return (png_ptr? png_ptr->user_chunk_ptr : NULL);
+ return (png_ptr ? png_ptr->user_chunk_ptr : NULL);
}
#endif
png_size_t PNGAPI
png_get_compression_buffer_size(png_const_structp png_ptr)
{
- return (png_ptr ? png_ptr->zbuf_size : 0L);
+ return (png_ptr ? png_ptr->zbuf_size : 0);
}
-
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* These functions were added to libpng 1.2.6 and were enabled
* by default in libpng-1.4.0 */
png_uint_32 PNGAPI
-png_get_user_width_max(png_const_structp png_ptr)
+png_get_user_width_max (png_const_structp png_ptr)
{
- return (png_ptr? png_ptr->user_width_max : 0);
+ return (png_ptr ? png_ptr->user_width_max : 0);
}
+
png_uint_32 PNGAPI
-png_get_user_height_max(png_const_structp png_ptr)
+png_get_user_height_max (png_const_structp png_ptr)
{
- return (png_ptr? png_ptr->user_height_max : 0);
+ return (png_ptr ? png_ptr->user_height_max : 0);
}
+
/* This function was added to libpng 1.4.0 */
png_uint_32 PNGAPI
-png_get_chunk_cache_max(png_const_structp png_ptr)
+png_get_chunk_cache_max (png_const_structp png_ptr)
{
- return (png_ptr? png_ptr->user_chunk_cache_max : 0);
+ return (png_ptr ? png_ptr->user_chunk_cache_max : 0);
}
+
/* This function was added to libpng 1.4.1 */
png_alloc_size_t PNGAPI
-png_get_chunk_malloc_max(png_const_structp png_ptr)
+png_get_chunk_malloc_max (png_const_structp png_ptr)
{
- return (png_ptr?
- png_ptr->user_chunk_malloc_max : 0);
+ return (png_ptr ? png_ptr->user_chunk_malloc_max : 0);
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
/* These functions were added to libpng 1.4.0 */
#ifdef PNG_IO_STATE_SUPPORTED
png_uint_32 PNGAPI
-png_get_io_state(png_const_structp png_ptr)
+png_get_io_state (png_structp png_ptr)
{
- return png_ptr->io_state;
+ return png_ptr->io_state;
}
-png_bytep PNGAPI
-png_get_io_chunk_name(png_structp png_ptr)
+png_uint_32 PNGAPI
+png_get_io_chunk_type (png_const_structp png_ptr)
{
return png_ptr->chunk_name;
}
+
+png_const_bytep PNGAPI
+png_get_io_chunk_name (png_structp png_ptr)
+{
+ PNG_CSTRING_FROM_CHUNK(png_ptr->io_chunk_string, png_ptr->chunk_name);
+ return png_ptr->io_chunk_string;
+}
#endif /* ?PNG_IO_STATE_SUPPORTED */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
diff --git a/pnginfo.h b/pnginfo.h
new file mode 100644
index 0000000..a33bfab
--- /dev/null
+++ b/pnginfo.h
@@ -0,0 +1,269 @@
+
+/* pnginfo.h - header file for PNG reference library
+ *
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * Last changed in libpng 1.5.0 [January 6, 2011]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+ /* png_info is a structure that holds the information in a PNG file so
+ * that the application can find out the characteristics of the image.
+ * If you are reading the file, this structure will tell you what is
+ * in the PNG file. If you are writing the file, fill in the information
+ * you want to put into the PNG file, using png_set_*() functions, then
+ * call png_write_info().
+ *
+ * The names chosen should be very close to the PNG specification, so
+ * consult that document for information about the meaning of each field.
+ *
+ * With libpng < 0.95, it was only possible to directly set and read the
+ * the values in the png_info_struct, which meant that the contents and
+ * order of the values had to remain fixed. With libpng 0.95 and later,
+ * however, there are now functions that abstract the contents of
+ * png_info_struct from the application, so this makes it easier to use
+ * libpng with dynamic libraries, and even makes it possible to use
+ * libraries that don't have all of the libpng ancillary chunk-handing
+ * functionality. In libpng-1.5.0 this was moved into a separate private
+ * file that is not visible to applications.
+ *
+ * The following members may have allocated storage attached that should be
+ * cleaned up before the structure is discarded: palette, trans, text,
+ * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
+ * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these
+ * are automatically freed when the info structure is deallocated, if they were
+ * allocated internally by libpng. This behavior can be changed by means
+ * of the png_data_freer() function.
+ *
+ * More allocation details: all the chunk-reading functions that
+ * change these members go through the corresponding png_set_*
+ * functions. A function to clear these members is available: see
+ * png_free_data(). The png_set_* functions do not depend on being
+ * able to point info structure members to any of the storage they are
+ * passed (they make their own copies), EXCEPT that the png_set_text
+ * functions use the same storage passed to them in the text_ptr or
+ * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
+ * functions do not make their own copies.
+ */
+#ifndef PNGINFO_H
+#define PNGINFO_H
+
+struct png_info_def
+{
+ /* the following are necessary for every PNG file */
+ png_uint_32 width; /* width of image in pixels (from IHDR) */
+ png_uint_32 height; /* height of image in pixels (from IHDR) */
+ png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */
+ png_size_t rowbytes; /* bytes needed to hold an untransformed row */
+ png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */
+ png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */
+ png_uint_16 num_trans; /* number of transparent palette color (tRNS) */
+ png_byte bit_depth; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */
+ png_byte color_type; /* see PNG_COLOR_TYPE_ below (from IHDR) */
+ /* The following three should have been named *_method not *_type */
+ png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */
+ png_byte filter_type; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */
+ png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
+
+ /* The following is informational only on read, and not used on writes. */
+ png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */
+ png_byte pixel_depth; /* number of bits per pixel */
+ png_byte spare_byte; /* to align the data, and for future use */
+ png_byte signature[8]; /* magic bytes read by libpng from start of file */
+
+ /* The rest of the data is optional. If you are reading, check the
+ * valid field to see if the information in these are valid. If you
+ * are writing, set the valid field to those chunks you want written,
+ * and initialize the appropriate fields below.
+ */
+
+#if defined(PNG_gAMA_SUPPORTED)
+ /* The gAMA chunk describes the gamma characteristics of the system
+ * on which the image was created, normally in the range [1.0, 2.5].
+ * Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
+ */
+ png_fixed_point gamma;
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+ /* GR-P, 0.96a */
+ /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
+ png_byte srgb_intent; /* sRGB rendering intent [0, 1, 2, or 3] */
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED
+ /* The tEXt, and zTXt chunks contain human-readable textual data in
+ * uncompressed, compressed, and optionally compressed forms, respectively.
+ * The data in "text" is an array of pointers to uncompressed,
+ * null-terminated C strings. Each chunk has a keyword that describes the
+ * textual data contained in that chunk. Keywords are not required to be
+ * unique, and the text string may be empty. Any number of text chunks may
+ * be in an image.
+ */
+ int num_text; /* number of comments read or comments to write */
+ int max_text; /* current size of text array */
+ png_textp text; /* array of comments read or comments to write */
+#endif /* PNG_TEXT_SUPPORTED */
+
+#ifdef PNG_tIME_SUPPORTED
+ /* The tIME chunk holds the last time the displayed image data was
+ * modified. See the png_time struct for the contents of this struct.
+ */
+ png_time mod_time;
+#endif
+
+#ifdef PNG_sBIT_SUPPORTED
+ /* The sBIT chunk specifies the number of significant high-order bits
+ * in the pixel data. Values are in the range [1, bit_depth], and are
+ * only specified for the channels in the pixel data. The contents of
+ * the low-order bits is not specified. Data is valid if
+ * (valid & PNG_INFO_sBIT) is non-zero.
+ */
+ png_color_8 sig_bit; /* significant bits in color channels */
+#endif
+
+#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \
+defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* The tRNS chunk supplies transparency data for paletted images and
+ * other image types that don't need a full alpha channel. There are
+ * "num_trans" transparency values for a paletted image, stored in the
+ * same order as the palette colors, starting from index 0. Values
+ * for the data are in the range [0, 255], ranging from fully transparent
+ * to fully opaque, respectively. For non-paletted images, there is a
+ * single color specified that should be treated as fully transparent.
+ * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
+ */
+ png_bytep trans_alpha; /* alpha values for paletted image */
+ png_color_16 trans_color; /* transparent color for non-palette image */
+#endif
+
+#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* The bKGD chunk gives the suggested image background color if the
+ * display program does not have its own background color and the image
+ * is needs to composited onto a background before display. The colors
+ * in "background" are normally in the same color space/depth as the
+ * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
+ */
+ png_color_16 background;
+#endif
+
+#ifdef PNG_oFFs_SUPPORTED
+ /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
+ * and downwards from the top-left corner of the display, page, or other
+ * application-specific co-ordinate space. See the PNG_OFFSET_ defines
+ * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero.
+ */
+ png_int_32 x_offset; /* x offset on page */
+ png_int_32 y_offset; /* y offset on page */
+ png_byte offset_unit_type; /* offset units type */
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+ /* The pHYs chunk gives the physical pixel density of the image for
+ * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
+ * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
+ */
+ png_uint_32 x_pixels_per_unit; /* horizontal pixel density */
+ png_uint_32 y_pixels_per_unit; /* vertical pixel density */
+ png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+ /* The hIST chunk contains the relative frequency or importance of the
+ * various palette entries, so that a viewer can intelligently select a
+ * reduced-color palette, if required. Data is an array of "num_palette"
+ * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
+ * is non-zero.
+ */
+ png_uint_16p hist;
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+ /* The cHRM chunk describes the CIE color characteristics of the monitor
+ * on which the PNG was created. This data allows the viewer to do gamut
+ * mapping of the input image to ensure that the viewer sees the same
+ * colors in the image as the creator. Values are in the range
+ * [0.0, 0.8]. Data valid if (valid & PNG_INFO_cHRM) non-zero.
+ */
+ png_fixed_point x_white;
+ png_fixed_point y_white;
+ png_fixed_point x_red;
+ png_fixed_point y_red;
+ png_fixed_point x_green;
+ png_fixed_point y_green;
+ png_fixed_point x_blue;
+ png_fixed_point y_blue;
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+ /* The pCAL chunk describes a transformation between the stored pixel
+ * values and original physical data values used to create the image.
+ * The integer range [0, 2^bit_depth - 1] maps to the floating-point
+ * range given by [pcal_X0, pcal_X1], and are further transformed by a
+ * (possibly non-linear) transformation function given by "pcal_type"
+ * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_
+ * defines below, and the PNG-Group's PNG extensions document for a
+ * complete description of the transformations and how they should be
+ * implemented, and for a description of the ASCII parameter strings.
+ * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
+ */
+ png_charp pcal_purpose; /* pCAL chunk description string */
+ png_int_32 pcal_X0; /* minimum value */
+ png_int_32 pcal_X1; /* maximum value */
+ png_charp pcal_units; /* Latin-1 string giving physical units */
+ png_charpp pcal_params; /* ASCII strings containing parameter values */
+ png_byte pcal_type; /* equation type (see PNG_EQUATION_ below) */
+ png_byte pcal_nparams; /* number of parameters given in pcal_params */
+#endif
+
+/* New members added in libpng-1.0.6 */
+ png_uint_32 free_me; /* flags items libpng is responsible for freeing */
+
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
+ defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+ /* Storage for unknown chunks that the library doesn't recognize. */
+ png_unknown_chunkp unknown_chunks;
+ int unknown_chunks_num;
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+ /* iCCP chunk data. */
+ png_charp iccp_name; /* profile name */
+ png_bytep iccp_profile; /* International Color Consortium profile data */
+ png_uint_32 iccp_proflen; /* ICC profile data length */
+ png_byte iccp_compression; /* Always zero */
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+ /* Data on sPLT chunks (there may be more than one). */
+ png_sPLT_tp splt_palettes;
+ png_uint_32 splt_palettes_num;
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+ /* The sCAL chunk describes the actual physical dimensions of the
+ * subject matter of the graphic. The chunk contains a unit specification
+ * a byte value, and two ASCII strings representing floating-point
+ * values. The values are width and height corresponsing to one pixel
+ * in the image. Data values are valid if (valid & PNG_INFO_sCAL) is
+ * non-zero.
+ */
+ png_byte scal_unit; /* unit of physical scale */
+ png_charp scal_s_width; /* string containing height */
+ png_charp scal_s_height; /* string containing width */
+#endif
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+ /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS)
+ non-zero */
+ /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
+ png_bytepp row_pointers; /* the image bits */
+#endif
+
+};
+#endif /* PNGINFO_H */
diff --git a/pngmem.c b/pngmem.c
index 4f00cff..bf5ff03 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@
/* pngmem.c - stub functions for memory allocation
*
- * Last changed in libpng 1.4.6 [April 8, 2011]
+ * Last changed in libpng 1.5.7 [December 15, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -17,52 +17,56 @@
* identify the replacement functions.
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
/* Borland DOS special memory handler */
#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
/* If you change this, be sure to change the one in png.h also */
/* Allocate memory for a png_struct. The malloc and memset can be replaced
by a single call to calloc() if this is thought to improve performance. */
-png_voidp /* PRIVATE */
-png_create_struct(int type)
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_create_struct,(int type),PNG_ALLOCATED)
{
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
return (png_create_struct_2(type, NULL, NULL));
}
/* Alternate version of png_create_struct, for use with user-defined malloc. */
-png_voidp /* PRIVATE */
-png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),
+ PNG_ALLOCATED)
{
-#endif /* PNG_USER_MEM_SUPPORTED */
+# endif /* PNG_USER_MEM_SUPPORTED */
png_size_t size;
png_voidp struct_ptr;
if (type == PNG_STRUCT_INFO)
size = png_sizeof(png_info);
+
else if (type == PNG_STRUCT_PNG)
size = png_sizeof(png_struct);
+
else
return (png_get_copyright(NULL));
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
if (malloc_fn != NULL)
{
png_struct dummy_struct;
- png_structp png_ptr = &dummy_struct;
- png_ptr->mem_ptr=mem_ptr;
- struct_ptr = (*(malloc_fn))(png_ptr, (png_uint_32)size);
+ memset(&dummy_struct, 0, sizeof dummy_struct);
+ dummy_struct.mem_ptr=mem_ptr;
+ struct_ptr = (*(malloc_fn))(&dummy_struct, (png_alloc_size_t)size);
}
+
else
-#endif /* PNG_USER_MEM_SUPPORTED */
+# endif /* PNG_USER_MEM_SUPPORTED */
struct_ptr = (png_voidp)farmalloc(size);
if (struct_ptr != NULL)
png_memset(struct_ptr, 0, size);
+
return (struct_ptr);
}
@@ -70,7 +74,7 @@
void /* PRIVATE */
png_destroy_struct(png_voidp struct_ptr)
{
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2(struct_ptr, NULL, NULL);
}
@@ -79,19 +83,20 @@
png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
png_voidp mem_ptr)
{
-#endif
+# endif
if (struct_ptr != NULL)
{
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
if (free_fn != NULL)
{
png_struct dummy_struct;
- png_structp png_ptr = &dummy_struct;
- png_ptr->mem_ptr=mem_ptr;
- (*(free_fn))(png_ptr, struct_ptr);
+ memset(&dummy_struct, 0, sizeof dummy_struct);
+ dummy_struct.mem_ptr=mem_ptr;
+ (*(free_fn))(&dummy_struct, struct_ptr);
return;
}
-#endif /* PNG_USER_MEM_SUPPORTED */
+
+# endif /* PNG_USER_MEM_SUPPORTED */
farfree (struct_ptr);
}
}
@@ -115,55 +120,62 @@
* result, we would be truncating potentially larger memory requests
* (which should cause a fatal error) and introducing major problems.
*/
-png_voidp PNGAPI
-png_calloc(png_structp png_ptr, png_alloc_size_t size)
+PNG_FUNCTION(png_voidp,PNGAPI
+png_calloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
{
png_voidp ret;
ret = (png_malloc(png_ptr, size));
+
if (ret != NULL)
png_memset(ret,0,(png_size_t)size);
+
return (ret);
}
-png_voidp PNGAPI
-png_malloc(png_structp png_ptr, png_alloc_size_t size)
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
{
png_voidp ret;
if (png_ptr == NULL || size == 0)
return (NULL);
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
if (png_ptr->malloc_fn != NULL)
- ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
+ ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
+
else
ret = (png_malloc_default(png_ptr, size));
+
if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of memory");
+
return (ret);
}
-png_voidp PNGAPI
-png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
{
png_voidp ret;
-#endif /* PNG_USER_MEM_SUPPORTED */
+# endif /* PNG_USER_MEM_SUPPORTED */
if (png_ptr == NULL || size == 0)
return (NULL);
-#ifdef PNG_MAX_MALLOC_64K
+# ifdef PNG_MAX_MALLOC_64K
if (size > (png_uint_32)65536L)
{
png_warning(png_ptr, "Cannot Allocate > 64K");
ret = NULL;
}
+
else
-#endif
+# endif
if (size != (size_t)size)
ret = NULL;
+
else if (size == (png_uint_32)65536L)
{
if (png_ptr->offset_table == NULL)
@@ -175,8 +187,9 @@
int num_blocks;
png_uint_32 total_size;
png_bytep table;
- int i;
+ int i, mem_level, window_bits;
png_byte huge * hptr;
+ int window_bits
if (ret != NULL)
{
@@ -184,12 +197,23 @@
ret = NULL;
}
- if (png_ptr->zlib_window_bits > 14)
- num_blocks = (int)(1 << (png_ptr->zlib_window_bits - 14));
+ window_bits =
+ png_ptr->zlib_window_bits >= png_ptr->zlib_text_window_bits ?
+ png_ptr->zlib_window_bits : png_ptr->zlib_text_window_bits;
+
+ if (window_bits > 14)
+ num_blocks = (int)(1 << (window_bits - 14));
+
else
num_blocks = 1;
- if (png_ptr->zlib_mem_level >= 7)
- num_blocks += (int)(1 << (png_ptr->zlib_mem_level - 7));
+
+ mem_level =
+ png_ptr->zlib_mem_level >= png_ptr->zlib_text_mem_level ?
+ png_ptr->zlib_mem_level : png_ptr->zlib_text_mem_level;
+
+ if (mem_level >= 7)
+ num_blocks += (int)(1 << (mem_level - 7));
+
else
num_blocks++;
@@ -199,25 +223,27 @@
if (table == NULL)
{
-#ifndef PNG_USER_MEM_SUPPORTED
+# ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out Of Memory"); /* Note "O", "M" */
+
else
png_warning(png_ptr, "Out Of Memory");
-#endif
+# endif
return (NULL);
}
if ((png_size_t)table & 0xfff0)
{
-#ifndef PNG_USER_MEM_SUPPORTED
+# ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr,
"Farmalloc didn't return normalized pointer");
+
else
png_warning(png_ptr,
"Farmalloc didn't return normalized pointer");
-#endif
+# endif
return (NULL);
}
@@ -227,12 +253,13 @@
if (png_ptr->offset_table_ptr == NULL)
{
-#ifndef PNG_USER_MEM_SUPPORTED
+# ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out Of memory"); /* Note "O", "m" */
+
else
png_warning(png_ptr, "Out Of memory");
-#endif
+# endif
return (NULL);
}
@@ -242,6 +269,7 @@
hptr = (png_byte huge *)((long)(hptr) & 0xfffffff0L);
hptr = hptr + 16L; /* "hptr += 16L" fails on Turbo C++ 3.0 */
}
+
for (i = 0; i < num_blocks; i++)
{
png_ptr->offset_table_ptr[i] = (png_bytep)hptr;
@@ -256,29 +284,32 @@
if (png_ptr->offset_table_count >= png_ptr->offset_table_number)
{
-#ifndef PNG_USER_MEM_SUPPORTED
+# ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
- png_error(png_ptr, "Out of Memory"); /* Note "o" and "M" */
+ png_error(png_ptr, "Out of Memory"); /* Note "O" and "M" */
+
else
png_warning(png_ptr, "Out of Memory");
-#endif
+# endif
return (NULL);
}
ret = png_ptr->offset_table_ptr[png_ptr->offset_table_count++];
}
+
else
ret = farmalloc(size);
-#ifndef PNG_USER_MEM_SUPPORTED
+# ifndef PNG_USER_MEM_SUPPORTED
if (ret == NULL)
{
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of memory"); /* Note "o" and "m" */
+
else
png_warning(png_ptr, "Out of memory"); /* Note "o" and "m" */
}
-#endif
+# endif
return (ret);
}
@@ -293,12 +324,13 @@
if (png_ptr == NULL || ptr == NULL)
return;
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
if (png_ptr->free_fn != NULL)
{
(*(png_ptr->free_fn))(png_ptr, ptr);
return;
}
+
else
png_free_default(png_ptr, ptr);
}
@@ -306,7 +338,7 @@
void PNGAPI
png_free_default(png_structp png_ptr, png_voidp ptr)
{
-#endif /* PNG_USER_MEM_SUPPORTED */
+# endif /* PNG_USER_MEM_SUPPORTED */
if (png_ptr == NULL || ptr == NULL)
return;
@@ -334,9 +366,7 @@
}
if (ptr != NULL)
- {
farfree(ptr);
- }
}
#else /* Not the Borland DOS special memory handler */
@@ -344,52 +374,58 @@
/* Allocate memory for a png_struct or a png_info. The malloc and
memset can be replaced by a single call to calloc() if this is thought
to improve performance noticably. */
-png_voidp /* PRIVATE */
-png_create_struct(int type)
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_create_struct,(int type),PNG_ALLOCATED)
{
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
return (png_create_struct_2(type, NULL, NULL));
}
/* Allocate memory for a png_struct or a png_info. The malloc and
memset can be replaced by a single call to calloc() if this is thought
to improve performance noticably. */
-png_voidp /* PRIVATE */
-png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),
+ PNG_ALLOCATED)
{
-#endif /* PNG_USER_MEM_SUPPORTED */
+# endif /* PNG_USER_MEM_SUPPORTED */
png_size_t size;
png_voidp struct_ptr;
if (type == PNG_STRUCT_INFO)
size = png_sizeof(png_info);
+
else if (type == PNG_STRUCT_PNG)
size = png_sizeof(png_struct);
+
else
return (NULL);
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
if (malloc_fn != NULL)
{
png_struct dummy_struct;
png_structp png_ptr = &dummy_struct;
png_ptr->mem_ptr=mem_ptr;
struct_ptr = (*(malloc_fn))(png_ptr, size);
+
if (struct_ptr != NULL)
png_memset(struct_ptr, 0, size);
+
return (struct_ptr);
}
-#endif /* PNG_USER_MEM_SUPPORTED */
+# endif /* PNG_USER_MEM_SUPPORTED */
-#if defined(__TURBOC__) && !defined(__FLAT__)
+# if defined(__TURBOC__) && !defined(__FLAT__)
struct_ptr = (png_voidp)farmalloc(size);
-#else
-# if defined(_MSC_VER) && defined(MAXSEG_64K)
+# else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
struct_ptr = (png_voidp)halloc(size, 1);
-# else
+# else
struct_ptr = (png_voidp)malloc(size);
-# endif
-#endif
+# endif
+# endif
+
if (struct_ptr != NULL)
png_memset(struct_ptr, 0, size);
@@ -401,7 +437,7 @@
void /* PRIVATE */
png_destroy_struct(png_voidp struct_ptr)
{
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2(struct_ptr, NULL, NULL);
}
@@ -410,10 +446,10 @@
png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
png_voidp mem_ptr)
{
-#endif /* PNG_USER_MEM_SUPPORTED */
+# endif /* PNG_USER_MEM_SUPPORTED */
if (struct_ptr != NULL)
{
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
if (free_fn != NULL)
{
png_struct dummy_struct;
@@ -422,16 +458,19 @@
(*(free_fn))(png_ptr, struct_ptr);
return;
}
-#endif /* PNG_USER_MEM_SUPPORTED */
-#if defined(__TURBOC__) && !defined(__FLAT__)
+# endif /* PNG_USER_MEM_SUPPORTED */
+# if defined(__TURBOC__) && !defined(__FLAT__)
farfree(struct_ptr);
-#else
-# if defined(_MSC_VER) && defined(MAXSEG_64K)
+
+# else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
hfree(struct_ptr);
-# else
+
+# else
free(struct_ptr);
-# endif
-#endif
+
+# endif
+# endif
}
}
@@ -442,80 +481,92 @@
* have the ability to do that.
*/
-png_voidp PNGAPI
-png_calloc(png_structp png_ptr, png_alloc_size_t size)
+PNG_FUNCTION(png_voidp,PNGAPI
+png_calloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
{
png_voidp ret;
ret = (png_malloc(png_ptr, size));
+
if (ret != NULL)
png_memset(ret,0,(png_size_t)size);
+
return (ret);
}
-png_voidp PNGAPI
-png_malloc(png_structp png_ptr, png_alloc_size_t size)
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
{
png_voidp ret;
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
if (png_ptr == NULL || size == 0)
return (NULL);
if (png_ptr->malloc_fn != NULL)
ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
+
else
ret = (png_malloc_default(png_ptr, size));
+
if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of Memory");
+
return (ret);
}
-png_voidp PNGAPI
-png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
{
png_voidp ret;
-#endif /* PNG_USER_MEM_SUPPORTED */
+# endif /* PNG_USER_MEM_SUPPORTED */
if (png_ptr == NULL || size == 0)
return (NULL);
-#ifdef PNG_MAX_MALLOC_64K
+# ifdef PNG_MAX_MALLOC_64K
if (size > (png_uint_32)65536L)
{
-#ifndef PNG_USER_MEM_SUPPORTED
+# ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Cannot Allocate > 64K");
+
else
-#endif
+# endif
return NULL;
}
-#endif
+# endif
/* Check for overflow */
-#if defined(__TURBOC__) && !defined(__FLAT__)
+# if defined(__TURBOC__) && !defined(__FLAT__)
+
if (size != (unsigned long)size)
ret = NULL;
+
else
ret = farmalloc(size);
-#else
-# if defined(_MSC_VER) && defined(MAXSEG_64K)
+
+# else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
if (size != (unsigned long)size)
ret = NULL;
+
else
ret = halloc(size, 1);
-# else
+
+# else
if (size != (size_t)size)
ret = NULL;
+
else
ret = malloc((size_t)size);
-# endif
-#endif
+# endif
+# endif
-#ifndef PNG_USER_MEM_SUPPORTED
+# ifndef PNG_USER_MEM_SUPPORTED
if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of Memory");
-#endif
+# endif
return (ret);
}
@@ -529,34 +580,38 @@
if (png_ptr == NULL || ptr == NULL)
return;
-#ifdef PNG_USER_MEM_SUPPORTED
+# ifdef PNG_USER_MEM_SUPPORTED
if (png_ptr->free_fn != NULL)
{
(*(png_ptr->free_fn))(png_ptr, ptr);
return;
}
+
else
png_free_default(png_ptr, ptr);
}
+
void PNGAPI
png_free_default(png_structp png_ptr, png_voidp ptr)
{
if (png_ptr == NULL || ptr == NULL)
return;
-#endif /* PNG_USER_MEM_SUPPORTED */
+# endif /* PNG_USER_MEM_SUPPORTED */
-#if defined(__TURBOC__) && !defined(__FLAT__)
+# if defined(__TURBOC__) && !defined(__FLAT__)
farfree(ptr);
-#else
-# if defined(_MSC_VER) && defined(MAXSEG_64K)
- hfree(ptr);
-# else
- free(ptr);
-# endif
-#endif
-}
+# else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
+ hfree(ptr);
+
+# else
+ free(ptr);
+
+# endif
+# endif
+}
#endif /* Not Borland DOS special memory handler */
/* This function was added at libpng version 1.2.3. The png_malloc_warn()
@@ -564,8 +619,8 @@
* instead of issuing a png_error, if it fails to allocate the requested
* memory.
*/
-png_voidp PNGAPI
-png_malloc_warn(png_structp png_ptr, png_alloc_size_t size)
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc_warn,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
{
png_voidp ptr;
png_uint_32 save_flags;
@@ -605,6 +660,7 @@
{
if (png_ptr == NULL)
return (NULL);
+
return ((png_voidp)png_ptr->mem_ptr);
}
#endif /* PNG_USER_MEM_SUPPORTED */
diff --git a/pngpread.c b/pngpread.c
index a2d8dbf..9107332 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode
*
- * Last changed in libpng 1.4.6 [March 8, 2011]
+ * Last changed in libpng 1.5.9 [(PENDING RELEASE)]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,11 +11,10 @@
* and license in png.h
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
#include "pngpriv.h"
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+
/* Push model modes */
#define PNG_READ_SIG_MODE 0
#define PNG_READ_CHUNK_MODE 1
@@ -29,7 +28,7 @@
void PNGAPI
png_process_data(png_structp png_ptr, png_infop info_ptr,
- png_bytep buffer, png_size_t buffer_size)
+ png_bytep buffer, png_size_t buffer_size)
{
if (png_ptr == NULL || info_ptr == NULL)
return;
@@ -42,6 +41,64 @@
}
}
+png_size_t PNGAPI
+png_process_data_pause(png_structp png_ptr, int save)
+{
+ if (png_ptr != NULL)
+ {
+ /* It's easiest for the caller if we do the save, then the caller doesn't
+ * have to supply the same data again:
+ */
+ if (save)
+ png_push_save_buffer(png_ptr);
+ else
+ {
+ /* This includes any pending saved bytes: */
+ png_size_t remaining = png_ptr->buffer_size;
+ png_ptr->buffer_size = 0;
+
+ /* So subtract the saved buffer size, unless all the data
+ * is actually 'saved', in which case we just return 0
+ */
+ if (png_ptr->save_buffer_size < remaining)
+ return remaining - png_ptr->save_buffer_size;
+ }
+ }
+
+ return 0;
+}
+
+png_uint_32 PNGAPI
+png_process_data_skip(png_structp png_ptr)
+{
+ png_uint_32 remaining = 0;
+
+ if (png_ptr != NULL && png_ptr->process_mode == PNG_SKIP_MODE &&
+ png_ptr->skip_length > 0)
+ {
+ /* At the end of png_process_data the buffer size must be 0 (see the loop
+ * above) so we can detect a broken call here:
+ */
+ if (png_ptr->buffer_size != 0)
+ png_error(png_ptr,
+ "png_process_data_skip called inside png_process_data");
+
+ /* If is impossible for there to be a saved buffer at this point -
+ * otherwise we could not be in SKIP mode. This will also happen if
+ * png_process_skip is called inside png_process_data (but only very
+ * rarely.)
+ */
+ if (png_ptr->save_buffer_size != 0)
+ png_error(png_ptr, "png_process_data_skip called with saved data");
+
+ remaining = png_ptr->skip_length;
+ png_ptr->skip_length = 0;
+ png_ptr->process_mode = PNG_READ_CHUNK_MODE;
+ }
+
+ return remaining;
+}
+
/* What we do with the incoming data depends on what we were previously
* doing before we ran out of data...
*/
@@ -71,30 +128,6 @@
break;
}
-#ifdef PNG_READ_tEXt_SUPPORTED
- case PNG_READ_tEXt_MODE:
- {
- png_push_read_tEXt(png_ptr, info_ptr);
- break;
- }
-
-#endif
-#ifdef PNG_READ_zTXt_SUPPORTED
- case PNG_READ_zTXt_MODE:
- {
- png_push_read_zTXt(png_ptr, info_ptr);
- break;
- }
-
-#endif
-#ifdef PNG_READ_iTXt_SUPPORTED
- case PNG_READ_iTXt_MODE:
- {
- png_push_read_iTXt(png_ptr, info_ptr);
- break;
- }
-
-#endif
case PNG_SKIP_MODE:
{
png_push_crc_finish(png_ptr);
@@ -119,7 +152,7 @@
png_push_read_sig(png_structp png_ptr, png_infop info_ptr)
{
png_size_t num_checked = png_ptr->sig_bytes,
- num_to_check = 8 - num_checked;
+ num_to_check = 8 - num_checked;
if (png_ptr->buffer_size < num_to_check)
{
@@ -127,7 +160,7 @@
}
png_push_fill_buffer(png_ptr, &(info_ptr->signature[num_checked]),
- num_to_check);
+ num_to_check);
png_ptr->sig_bytes = (png_byte)(png_ptr->sig_bytes + num_to_check);
if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
@@ -135,9 +168,11 @@
if (num_checked < 4 &&
png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
png_error(png_ptr, "Not a PNG file");
+
else
png_error(png_ptr, "PNG file corrupted by ASCII conversion");
}
+
else
{
if (png_ptr->sig_bytes >= 8)
@@ -150,61 +185,7 @@
void /* PRIVATE */
png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
{
- PNG_IHDR;
- PNG_IDAT;
- PNG_IEND;
- PNG_PLTE;
-#ifdef PNG_READ_bKGD_SUPPORTED
- PNG_bKGD;
-#endif
-#ifdef PNG_READ_cHRM_SUPPORTED
- PNG_cHRM;
-#endif
-#ifdef PNG_READ_gAMA_SUPPORTED
- PNG_gAMA;
-#endif
-#ifdef PNG_READ_hIST_SUPPORTED
- PNG_hIST;
-#endif
-#ifdef PNG_READ_iCCP_SUPPORTED
- PNG_iCCP;
-#endif
-#ifdef PNG_READ_iTXt_SUPPORTED
- PNG_iTXt;
-#endif
-#ifdef PNG_READ_oFFs_SUPPORTED
- PNG_oFFs;
-#endif
-#ifdef PNG_READ_pCAL_SUPPORTED
- PNG_pCAL;
-#endif
-#ifdef PNG_READ_pHYs_SUPPORTED
- PNG_pHYs;
-#endif
-#ifdef PNG_READ_sBIT_SUPPORTED
- PNG_sBIT;
-#endif
-#ifdef PNG_READ_sCAL_SUPPORTED
- PNG_sCAL;
-#endif
-#ifdef PNG_READ_sRGB_SUPPORTED
- PNG_sRGB;
-#endif
-#ifdef PNG_READ_sPLT_SUPPORTED
- PNG_sPLT;
-#endif
-#ifdef PNG_READ_tEXt_SUPPORTED
- PNG_tEXt;
-#endif
-#ifdef PNG_READ_tIME_SUPPORTED
- PNG_tIME;
-#endif
-#ifdef PNG_READ_tRNS_SUPPORTED
- PNG_tRNS;
-#endif
-#ifdef PNG_READ_zTXt_SUPPORTED
- PNG_zTXt;
-#endif
+ png_uint_32 chunk_name;
/* First we make sure we have enough data for the 4 byte chunk name
* and the 4 byte chunk length before proceeding with decoding the
@@ -215,6 +196,7 @@
if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
{
png_byte chunk_length[4];
+ png_byte chunk_tag[4];
if (png_ptr->buffer_size < 8)
{
@@ -225,16 +207,27 @@
png_push_fill_buffer(png_ptr, chunk_length, 4);
png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
png_reset_crc(png_ptr);
- png_crc_read(png_ptr, png_ptr->chunk_name, 4);
+ png_crc_read(png_ptr, chunk_tag, 4);
+ png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
}
- if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
- if (png_ptr->mode & PNG_AFTER_IDAT)
- png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
+ chunk_name = png_ptr->chunk_name;
- if (!png_memcmp(png_ptr->chunk_name, png_IHDR, 4))
+ if (chunk_name == png_IDAT)
+ {
+ /* This is here above the if/else case statement below because if the
+ * unknown handling marks 'IDAT' as unknown then the IDAT handling case is
+ * completely skipped.
+ *
+ * TODO: there must be a better way of doing this.
+ */
+ if (png_ptr->mode & PNG_AFTER_IDAT)
+ png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
+ }
+
+ if (chunk_name == png_IHDR)
{
if (png_ptr->push_length != 13)
png_error(png_ptr, "Invalid IHDR length");
@@ -248,7 +241,7 @@
png_handle_IHDR(png_ptr, info_ptr, png_ptr->push_length);
}
- else if (!png_memcmp(png_ptr->chunk_name, png_IEND, 4))
+ else if (chunk_name == png_IEND)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -263,7 +256,7 @@
}
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- else if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name))
+ else if (png_chunk_unknown_handling(png_ptr, chunk_name))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -271,27 +264,27 @@
return;
}
- if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ if (chunk_name == png_IDAT)
png_ptr->mode |= PNG_HAVE_IDAT;
png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length);
- if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4))
+ if (chunk_name == png_PLTE)
png_ptr->mode |= PNG_HAVE_PLTE;
- else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ else if (chunk_name == png_IDAT)
{
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before IDAT");
else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
- !(png_ptr->mode & PNG_HAVE_PLTE))
+ !(png_ptr->mode & PNG_HAVE_PLTE))
png_error(png_ptr, "Missing PLTE before IDAT");
}
}
#endif
- else if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4))
+ else if (chunk_name == png_PLTE)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -301,7 +294,7 @@
png_handle_PLTE(png_ptr, info_ptr, png_ptr->push_length);
}
- else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ else if (chunk_name == png_IDAT)
{
/* If we reach an IDAT chunk, this means we have read all of the
* header chunks, and we can start reading the image (or if this
@@ -337,7 +330,7 @@
}
#ifdef PNG_READ_gAMA_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_gAMA, 4))
+ else if (png_ptr->chunk_name == png_gAMA)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -350,7 +343,7 @@
#endif
#ifdef PNG_READ_sBIT_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_sBIT, 4))
+ else if (png_ptr->chunk_name == png_sBIT)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -363,7 +356,7 @@
#endif
#ifdef PNG_READ_cHRM_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_cHRM, 4))
+ else if (png_ptr->chunk_name == png_cHRM)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -376,7 +369,7 @@
#endif
#ifdef PNG_READ_sRGB_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_sRGB, 4))
+ else if (chunk_name == png_sRGB)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -389,7 +382,7 @@
#endif
#ifdef PNG_READ_iCCP_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_iCCP, 4))
+ else if (png_ptr->chunk_name == png_iCCP)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -402,7 +395,7 @@
#endif
#ifdef PNG_READ_sPLT_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_sPLT, 4))
+ else if (chunk_name == png_sPLT)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -415,7 +408,7 @@
#endif
#ifdef PNG_READ_tRNS_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_tRNS, 4))
+ else if (chunk_name == png_tRNS)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -428,7 +421,7 @@
#endif
#ifdef PNG_READ_bKGD_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_bKGD, 4))
+ else if (chunk_name == png_bKGD)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -441,7 +434,7 @@
#endif
#ifdef PNG_READ_hIST_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_hIST, 4))
+ else if (chunk_name == png_hIST)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -454,7 +447,7 @@
#endif
#ifdef PNG_READ_pHYs_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_pHYs, 4))
+ else if (chunk_name == png_pHYs)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -467,7 +460,7 @@
#endif
#ifdef PNG_READ_oFFs_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_oFFs, 4))
+ else if (chunk_name == png_oFFs)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -480,7 +473,7 @@
#endif
#ifdef PNG_READ_pCAL_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_pCAL, 4))
+ else if (chunk_name == png_pCAL)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -493,7 +486,7 @@
#endif
#ifdef PNG_READ_sCAL_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_sCAL, 4))
+ else if (chunk_name == png_sCAL)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -506,7 +499,7 @@
#endif
#ifdef PNG_READ_tIME_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_tIME, 4))
+ else if (chunk_name == png_tIME)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -519,7 +512,7 @@
#endif
#ifdef PNG_READ_tEXt_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_tEXt, 4))
+ else if (chunk_name == png_tEXt)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -527,12 +520,12 @@
return;
}
- png_push_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length);
+ png_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length);
}
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_zTXt, 4))
+ else if (chunk_name == png_zTXt)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -540,12 +533,12 @@
return;
}
- png_push_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length);
+ png_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length);
}
#endif
#ifdef PNG_READ_iTXt_SUPPORTED
- else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4))
+ else if (chunk_name == png_iTXt)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
@@ -553,7 +546,7 @@
return;
}
- png_push_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
+ png_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
}
#endif
@@ -564,7 +557,7 @@
png_push_save_buffer(png_ptr);
return;
}
- png_push_handle_unknown(png_ptr, info_ptr, png_ptr->push_length);
+ png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length);
}
png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
@@ -582,36 +575,51 @@
{
if (png_ptr->skip_length && png_ptr->save_buffer_size)
{
- png_size_t save_size;
+ png_size_t save_size = png_ptr->save_buffer_size;
+ png_uint_32 skip_length = png_ptr->skip_length;
- if (png_ptr->skip_length < (png_uint_32)png_ptr->save_buffer_size)
- save_size = (png_size_t)png_ptr->skip_length;
+ /* We want the smaller of 'skip_length' and 'save_buffer_size', but
+ * they are of different types and we don't know which variable has the
+ * fewest bits. Carefully select the smaller and cast it to the type of
+ * the larger - this cannot overflow. Do not cast in the following test
+ * - it will break on either 16 or 64 bit platforms.
+ */
+ if (skip_length < save_size)
+ save_size = (png_size_t)skip_length;
+
else
- save_size = png_ptr->save_buffer_size;
+ skip_length = (png_uint_32)save_size;
png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
- png_ptr->skip_length -= save_size;
+ png_ptr->skip_length -= skip_length;
png_ptr->buffer_size -= save_size;
png_ptr->save_buffer_size -= save_size;
png_ptr->save_buffer_ptr += save_size;
}
+
if (png_ptr->skip_length && png_ptr->current_buffer_size)
{
- png_size_t save_size;
+ png_size_t save_size = png_ptr->current_buffer_size;
+ png_uint_32 skip_length = png_ptr->skip_length;
- if (png_ptr->skip_length < (png_uint_32)png_ptr->current_buffer_size)
- save_size = (png_size_t)png_ptr->skip_length;
+ /* We want the smaller of 'skip_length' and 'current_buffer_size', here,
+ * the same problem exists as above and the same solution.
+ */
+ if (skip_length < save_size)
+ save_size = (png_size_t)skip_length;
+
else
- save_size = png_ptr->current_buffer_size;
+ skip_length = (png_uint_32)save_size;
png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size);
- png_ptr->skip_length -= save_size;
+ png_ptr->skip_length -= skip_length;
png_ptr->buffer_size -= save_size;
png_ptr->current_buffer_size -= save_size;
png_ptr->current_buffer_ptr += save_size;
}
+
if (!png_ptr->skip_length)
{
if (png_ptr->buffer_size < 4)
@@ -625,7 +633,7 @@
}
}
-void PNGAPI
+void PNGCBAPI
png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
{
png_bytep ptr;
@@ -634,12 +642,14 @@
return;
ptr = buffer;
+
if (png_ptr->save_buffer_size)
{
png_size_t save_size;
if (length < png_ptr->save_buffer_size)
save_size = length;
+
else
save_size = png_ptr->save_buffer_size;
@@ -650,6 +660,7 @@
png_ptr->save_buffer_size -= save_size;
png_ptr->save_buffer_ptr += save_size;
}
+
if (length && png_ptr->current_buffer_size)
{
png_size_t save_size;
@@ -679,38 +690,42 @@
png_bytep dp;
istop = png_ptr->save_buffer_size;
+
for (i = 0, sp = png_ptr->save_buffer_ptr, dp = png_ptr->save_buffer;
- i < istop; i++, sp++, dp++)
+ i < istop; i++, sp++, dp++)
{
*dp = *sp;
}
}
}
+
if (png_ptr->save_buffer_size + png_ptr->current_buffer_size >
- png_ptr->save_buffer_max)
+ png_ptr->save_buffer_max)
{
png_size_t new_max;
png_bytep old_buffer;
if (png_ptr->save_buffer_size > PNG_SIZE_MAX -
- (png_ptr->current_buffer_size + 256))
+ (png_ptr->current_buffer_size + 256))
{
- png_error(png_ptr, "Potential overflow of save_buffer");
+ png_error(png_ptr, "Potential overflow of save_buffer");
}
new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256;
old_buffer = png_ptr->save_buffer;
- png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr,
- (png_size_t)new_max);
+ png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr, new_max);
+
if (png_ptr->save_buffer == NULL)
{
- png_free(png_ptr, old_buffer);
- png_error(png_ptr, "Insufficient memory for save_buffer");
+ png_free(png_ptr, old_buffer);
+ png_error(png_ptr, "Insufficient memory for save_buffer");
}
+
png_memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size);
png_free(png_ptr, old_buffer);
png_ptr->save_buffer_max = new_max;
}
+
if (png_ptr->current_buffer_size)
{
png_memcpy(png_ptr->save_buffer + png_ptr->save_buffer_size,
@@ -718,6 +733,7 @@
png_ptr->save_buffer_size += png_ptr->current_buffer_size;
png_ptr->current_buffer_size = 0;
}
+
png_ptr->save_buffer_ptr = png_ptr->save_buffer;
png_ptr->buffer_size = 0;
}
@@ -735,11 +751,12 @@
void /* PRIVATE */
png_push_read_IDAT(png_structp png_ptr)
{
- PNG_IDAT;
if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
{
png_byte chunk_length[4];
+ png_byte chunk_tag[4];
+ /* TODO: this code can be commoned up with the same code in push_read */
if (png_ptr->buffer_size < 8)
{
png_push_save_buffer(png_ptr);
@@ -749,67 +766,76 @@
png_push_fill_buffer(png_ptr, chunk_length, 4);
png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
png_reset_crc(png_ptr);
- png_crc_read(png_ptr, png_ptr->chunk_name, 4);
+ png_crc_read(png_ptr, chunk_tag, 4);
+ png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
- if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ if (png_ptr->chunk_name != png_IDAT)
{
png_ptr->process_mode = PNG_READ_CHUNK_MODE;
+
if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
png_error(png_ptr, "Not enough compressed data");
+
return;
}
png_ptr->idat_size = png_ptr->push_length;
}
+
if (png_ptr->idat_size && png_ptr->save_buffer_size)
{
- png_size_t save_size;
+ png_size_t save_size = png_ptr->save_buffer_size;
+ png_uint_32 idat_size = png_ptr->idat_size;
- if (png_ptr->idat_size < (png_uint_32)png_ptr->save_buffer_size)
- {
- save_size = (png_size_t)png_ptr->idat_size;
+ /* We want the smaller of 'idat_size' and 'current_buffer_size', but they
+ * are of different types and we don't know which variable has the fewest
+ * bits. Carefully select the smaller and cast it to the type of the
+ * larger - this cannot overflow. Do not cast in the following test - it
+ * will break on either 16 or 64 bit platforms.
+ */
+ if (idat_size < save_size)
+ save_size = (png_size_t)idat_size;
- /* Check for overflow */
- if ((png_uint_32)save_size != png_ptr->idat_size)
- png_error(png_ptr, "save_size overflowed in pngpread");
- }
else
- save_size = png_ptr->save_buffer_size;
+ idat_size = (png_uint_32)save_size;
png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size);
- png_ptr->idat_size -= save_size;
+ png_ptr->idat_size -= idat_size;
png_ptr->buffer_size -= save_size;
png_ptr->save_buffer_size -= save_size;
png_ptr->save_buffer_ptr += save_size;
}
+
if (png_ptr->idat_size && png_ptr->current_buffer_size)
{
- png_size_t save_size;
+ png_size_t save_size = png_ptr->current_buffer_size;
+ png_uint_32 idat_size = png_ptr->idat_size;
- if (png_ptr->idat_size < (png_uint_32)png_ptr->current_buffer_size)
- {
- save_size = (png_size_t)png_ptr->idat_size;
+ /* We want the smaller of 'idat_size' and 'current_buffer_size', but they
+ * are of different types and we don't know which variable has the fewest
+ * bits. Carefully select the smaller and cast it to the type of the
+ * larger - this cannot overflow.
+ */
+ if (idat_size < save_size)
+ save_size = (png_size_t)idat_size;
- /* Check for overflow */
- if ((png_uint_32)save_size != png_ptr->idat_size)
- png_error(png_ptr, "save_size overflowed in pngpread");
- }
else
- save_size = png_ptr->current_buffer_size;
+ idat_size = (png_uint_32)save_size;
png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size);
png_process_IDAT_data(png_ptr, png_ptr->current_buffer_ptr, save_size);
- png_ptr->idat_size -= save_size;
+ png_ptr->idat_size -= idat_size;
png_ptr->buffer_size -= save_size;
png_ptr->current_buffer_size -= save_size;
png_ptr->current_buffer_ptr += save_size;
}
+
if (!png_ptr->idat_size)
{
if (png_ptr->buffer_size < 4)
@@ -843,12 +869,12 @@
* or the stream marked as finished.
*/
while (png_ptr->zstream.avail_in > 0 &&
- !(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
+ !(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
{
int ret;
/* We have data for zlib, but we must check that zlib
- * has somewhere to put the results. It doesn't matter
+ * has someplace to put the results. It doesn't matter
* if we don't expect any results -- it may be the input
* data is just the LZ end code.
*/
@@ -857,15 +883,16 @@
png_ptr->zstream.avail_out =
(uInt) PNG_ROWBYTES(png_ptr->pixel_depth,
png_ptr->iwidth) + 1;
+
png_ptr->zstream.next_out = png_ptr->row_buf;
}
/* Using Z_SYNC_FLUSH here means that an unterminated
- * LZ stream can still be handled (a stream with a missing
- * end code), otherwise (Z_NO_FLUSH) a future zlib
- * implementation might defer output and, therefore,
- * change the current behavior. (See comments in inflate.c
- * for why this doesn't happen at present with zlib 1.2.5.)
+ * LZ stream (a stream with a missing end code) can still
+ * be handled, otherwise (Z_NO_FLUSH) a future zlib
+ * implementation might defer output and therefore
+ * change the current behavior (see comments in inflate.c
+ * for why this doesn't happen at present with zlib 1.2.5).
*/
ret = inflate(&png_ptr->zstream, Z_SYNC_FLUSH);
@@ -881,6 +908,7 @@
if (png_ptr->row_number >= png_ptr->num_rows ||
png_ptr->pass > 6)
png_warning(png_ptr, "Truncated compressed data in IDAT");
+
else
png_error(png_ptr, "Decompression error in IDAT");
@@ -901,6 +929,7 @@
/* Extra data. */
png_warning(png_ptr, "Extra compressed data in IDAT");
png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
+
/* Do no more processing; skip the unprocessed
* input check below.
*/
@@ -922,40 +951,62 @@
* after the zlib end code.
*/
if (png_ptr->zstream.avail_in > 0)
- png_warning(png_ptr, "Extra compression data");
+ png_warning(png_ptr, "Extra compression data in IDAT");
}
void /* PRIVATE */
png_push_process_row(png_structp png_ptr)
{
- png_ptr->row_info.color_type = png_ptr->color_type;
- png_ptr->row_info.width = png_ptr->iwidth;
- png_ptr->row_info.channels = png_ptr->channels;
- png_ptr->row_info.bit_depth = png_ptr->bit_depth;
- png_ptr->row_info.pixel_depth = png_ptr->pixel_depth;
+ /* 1.5.6: row_info moved out of png_struct to a local here. */
+ png_row_info row_info;
- png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
- png_ptr->row_info.width);
+ row_info.width = png_ptr->iwidth; /* NOTE: width of current interlaced row */
+ row_info.color_type = png_ptr->color_type;
+ row_info.bit_depth = png_ptr->bit_depth;
+ row_info.channels = png_ptr->channels;
+ row_info.pixel_depth = png_ptr->pixel_depth;
+ row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width);
- png_read_filter_row(png_ptr, &(png_ptr->row_info),
- png_ptr->row_buf + 1, png_ptr->prev_row + 1,
- (int)(png_ptr->row_buf[0]));
+ if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE)
+ {
+ if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST)
+ png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,
+ png_ptr->prev_row + 1, png_ptr->row_buf[0]);
+ else
+ png_error(png_ptr, "bad adaptive filter value");
+ }
- png_memcpy(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1);
+ /* libpng 1.5.6: the following line was copying png_ptr->rowbytes before
+ * 1.5.6, while the buffer really is this big in current versions of libpng
+ * it may not be in the future, so this was changed just to copy the
+ * interlaced row count:
+ */
+ png_memcpy(png_ptr->prev_row, png_ptr->row_buf, row_info.rowbytes + 1);
- if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
- png_do_read_transformations(png_ptr);
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+ if (png_ptr->transformations)
+ png_do_read_transformations(png_ptr, &row_info);
+#endif
+
+ /* The transformed pixel depth should match the depth now in row_info. */
+ if (png_ptr->transformed_pixel_depth == 0)
+ {
+ png_ptr->transformed_pixel_depth = row_info.pixel_depth;
+ if (row_info.pixel_depth > png_ptr->maximum_pixel_depth)
+ png_error(png_ptr, "progressive row overflow");
+ }
+
+ else if (png_ptr->transformed_pixel_depth != row_info.pixel_depth)
+ png_error(png_ptr, "internal progressive row size calculation error");
+
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Blow up interlaced rows to full size */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
if (png_ptr->pass < 6)
-/* old interface (pre-1.0.9):
- png_do_read_interlace(&(png_ptr->row_info),
- png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations);
- */
- png_do_read_interlace(png_ptr);
+ png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass,
+ png_ptr->transformations);
switch (png_ptr->pass)
{
@@ -1135,24 +1186,26 @@
void /* PRIVATE */
png_read_push_finish_row(png_structp png_ptr)
{
+#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
+ static PNG_CONST png_byte FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
+ static PNG_CONST png_byte FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
- PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
+ static PNG_CONST png_byte FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
- PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
+ static PNG_CONST png_byte FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
/* Height of interlace block. This is not currently used - if you need
* it, uncomment it here and in png.h
- PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
+ static PNG_CONST png_byte FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
*/
+#endif
png_ptr->row_number++;
if (png_ptr->row_number < png_ptr->num_rows)
@@ -1162,15 +1215,15 @@
if (png_ptr->interlaced)
{
png_ptr->row_number = 0;
- png_memset(png_ptr->prev_row, 0,
- png_ptr->rowbytes + 1);
+ png_memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
+
do
{
png_ptr->pass++;
if ((png_ptr->pass == 1 && png_ptr->width < 5) ||
(png_ptr->pass == 3 && png_ptr->width < 3) ||
(png_ptr->pass == 5 && png_ptr->width < 2))
- png_ptr->pass++;
+ png_ptr->pass++;
if (png_ptr->pass > 7)
png_ptr->pass--;
@@ -1179,531 +1232,23 @@
break;
png_ptr->iwidth = (png_ptr->width +
- png_pass_inc[png_ptr->pass] - 1 -
- png_pass_start[png_ptr->pass]) /
- png_pass_inc[png_ptr->pass];
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
if (png_ptr->transformations & PNG_INTERLACE)
break;
png_ptr->num_rows = (png_ptr->height +
- png_pass_yinc[png_ptr->pass] - 1 -
- png_pass_ystart[png_ptr->pass]) /
- png_pass_yinc[png_ptr->pass];
+ png_pass_yinc[png_ptr->pass] - 1 -
+ png_pass_ystart[png_ptr->pass]) /
+ png_pass_yinc[png_ptr->pass];
} while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0);
}
#endif /* PNG_READ_INTERLACING_SUPPORTED */
}
-#ifdef PNG_READ_tEXt_SUPPORTED
-void /* PRIVATE */
-png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
- length)
-{
- if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
- {
- png_error(png_ptr, "Out of place tEXt");
- PNG_UNUSED(info_ptr) /* To quiet some compiler warnings */
- }
-
-#ifdef PNG_MAX_MALLOC_64K
- png_ptr->skip_length = 0; /* This may not be necessary */
-
- if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
- {
- png_warning(png_ptr, "tEXt chunk too large to fit in memory");
- png_ptr->skip_length = length - (png_uint_32)65535L;
- length = (png_uint_32)65535L;
- }
-#endif
-
- png_ptr->current_text = (png_charp)png_malloc(png_ptr,
- (png_size_t)(length + 1));
- png_ptr->current_text[length] = '\0';
- png_ptr->current_text_ptr = png_ptr->current_text;
- png_ptr->current_text_size = (png_size_t)length;
- png_ptr->current_text_left = (png_size_t)length;
- png_ptr->process_mode = PNG_READ_tEXt_MODE;
-}
-
-void /* PRIVATE */
-png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
-{
- if (png_ptr->buffer_size && png_ptr->current_text_left)
- {
- png_size_t text_size;
-
- if (png_ptr->buffer_size < png_ptr->current_text_left)
- text_size = png_ptr->buffer_size;
-
- else
- text_size = png_ptr->current_text_left;
-
- png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
- png_ptr->current_text_left -= text_size;
- png_ptr->current_text_ptr += text_size;
- }
- if (!(png_ptr->current_text_left))
- {
- png_textp text_ptr;
- png_charp text;
- png_charp key;
- int ret;
-
- if (png_ptr->buffer_size < 4)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_push_crc_finish(png_ptr);
-
-#ifdef PNG_MAX_MALLOC_64K
- if (png_ptr->skip_length)
- return;
-#endif
-
- key = png_ptr->current_text;
-
- for (text = key; *text; text++)
- /* Empty loop */ ;
-
- if (text < key + png_ptr->current_text_size)
- text++;
-
- text_ptr = (png_textp)png_malloc(png_ptr,
- png_sizeof(png_text));
- text_ptr->compression = PNG_TEXT_COMPRESSION_NONE;
- text_ptr->key = key;
-#ifdef PNG_iTXt_SUPPORTED
- text_ptr->lang = NULL;
- text_ptr->lang_key = NULL;
-#endif
- text_ptr->text = text;
-
- ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
-
- png_free(png_ptr, key);
- png_free(png_ptr, text_ptr);
- png_ptr->current_text = NULL;
-
- if (ret)
- png_warning(png_ptr, "Insufficient memory to store text chunk");
- }
-}
-#endif
-
-#ifdef PNG_READ_zTXt_SUPPORTED
-void /* PRIVATE */
-png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
- length)
-{
- if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
- {
- png_error(png_ptr, "Out of place zTXt");
- PNG_UNUSED(info_ptr) /* To quiet some compiler warnings */
- }
-
-#ifdef PNG_MAX_MALLOC_64K
- /* We can't handle zTXt chunks > 64K, since we don't have enough space
- * to be able to store the uncompressed data. Actually, the threshold
- * is probably around 32K, but it isn't as definite as 64K is.
- */
- if (length > (png_uint_32)65535L)
- {
- png_warning(png_ptr, "zTXt chunk too large to fit in memory");
- png_push_crc_skip(png_ptr, length);
- return;
- }
-#endif
-
- png_ptr->current_text = (png_charp)png_malloc(png_ptr,
- (png_size_t)(length + 1));
- png_ptr->current_text[length] = '\0';
- png_ptr->current_text_ptr = png_ptr->current_text;
- png_ptr->current_text_size = (png_size_t)length;
- png_ptr->current_text_left = (png_size_t)length;
- png_ptr->process_mode = PNG_READ_zTXt_MODE;
-}
-
-void /* PRIVATE */
-png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
-{
- if (png_ptr->buffer_size && png_ptr->current_text_left)
- {
- png_size_t text_size;
-
- if (png_ptr->buffer_size < (png_uint_32)png_ptr->current_text_left)
- text_size = png_ptr->buffer_size;
-
- else
- text_size = png_ptr->current_text_left;
-
- png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
- png_ptr->current_text_left -= text_size;
- png_ptr->current_text_ptr += text_size;
- }
- if (!(png_ptr->current_text_left))
- {
- png_textp text_ptr;
- png_charp text;
- png_charp key;
- int ret;
- png_size_t text_size, key_size;
-
- if (png_ptr->buffer_size < 4)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_push_crc_finish(png_ptr);
-
- key = png_ptr->current_text;
-
- for (text = key; *text; text++)
- /* Empty loop */ ;
-
- /* zTXt can't have zero text */
- if (text >= key + png_ptr->current_text_size)
- {
- png_ptr->current_text = NULL;
- png_free(png_ptr, key);
- return;
- }
-
- text++;
-
- if (*text != PNG_TEXT_COMPRESSION_zTXt) /* Check compression byte */
- {
- png_ptr->current_text = NULL;
- png_free(png_ptr, key);
- return;
- }
-
- text++;
-
- png_ptr->zstream.next_in = (png_bytep )text;
- png_ptr->zstream.avail_in = (uInt)(png_ptr->current_text_size -
- (text - key));
- png_ptr->zstream.next_out = png_ptr->zbuf;
- png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
-
- key_size = text - key;
- text_size = 0;
- text = NULL;
- ret = Z_STREAM_END;
-
- while (png_ptr->zstream.avail_in)
- {
- ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
- if (ret != Z_OK && ret != Z_STREAM_END)
- {
- inflateReset(&png_ptr->zstream);
- png_ptr->zstream.avail_in = 0;
- png_ptr->current_text = NULL;
- png_free(png_ptr, key);
- png_free(png_ptr, text);
- return;
- }
- if (!(png_ptr->zstream.avail_out) || ret == Z_STREAM_END)
- {
- if (text == NULL)
- {
- text = (png_charp)png_malloc(png_ptr,
- (png_ptr->zbuf_size
- - png_ptr->zstream.avail_out + key_size + 1));
-
- png_memcpy(text + key_size, png_ptr->zbuf,
- png_ptr->zbuf_size - png_ptr->zstream.avail_out);
-
- png_memcpy(text, key, key_size);
-
- text_size = key_size + png_ptr->zbuf_size -
- png_ptr->zstream.avail_out;
-
- *(text + text_size) = '\0';
- }
- else
- {
- png_charp tmp;
-
- tmp = text;
- text = (png_charp)png_malloc(png_ptr, text_size +
- (png_ptr->zbuf_size
- - png_ptr->zstream.avail_out + 1));
-
- png_memcpy(text, tmp, text_size);
- png_free(png_ptr, tmp);
-
- png_memcpy(text + text_size, png_ptr->zbuf,
- png_ptr->zbuf_size - png_ptr->zstream.avail_out);
-
- text_size += png_ptr->zbuf_size - png_ptr->zstream.avail_out;
- *(text + text_size) = '\0';
- }
- if (ret != Z_STREAM_END)
- {
- png_ptr->zstream.next_out = png_ptr->zbuf;
- png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
- }
- }
- else
- {
- break;
- }
-
- if (ret == Z_STREAM_END)
- break;
- }
-
- inflateReset(&png_ptr->zstream);
- png_ptr->zstream.avail_in = 0;
-
- if (ret != Z_STREAM_END)
- {
- png_ptr->current_text = NULL;
- png_free(png_ptr, key);
- png_free(png_ptr, text);
- return;
- }
-
- png_ptr->current_text = NULL;
- png_free(png_ptr, key);
- key = text;
- text += key_size;
-
- text_ptr = (png_textp)png_malloc(png_ptr,
- png_sizeof(png_text));
- text_ptr->compression = PNG_TEXT_COMPRESSION_zTXt;
- text_ptr->key = key;
-#ifdef PNG_iTXt_SUPPORTED
- text_ptr->lang = NULL;
- text_ptr->lang_key = NULL;
-#endif
- text_ptr->text = text;
-
- ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
-
- png_free(png_ptr, key);
- png_free(png_ptr, text_ptr);
-
- if (ret)
- png_warning(png_ptr, "Insufficient memory to store text chunk");
- }
-}
-#endif
-
-#ifdef PNG_READ_iTXt_SUPPORTED
-void /* PRIVATE */
-png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
- length)
-{
- if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
- {
- png_error(png_ptr, "Out of place iTXt");
- PNG_UNUSED(info_ptr) /* To quiet some compiler warnings */
- }
-
-#ifdef PNG_MAX_MALLOC_64K
- png_ptr->skip_length = 0; /* This may not be necessary */
-
- if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
- {
- png_warning(png_ptr, "iTXt chunk too large to fit in memory");
- png_ptr->skip_length = length - (png_uint_32)65535L;
- length = (png_uint_32)65535L;
- }
-#endif
-
- png_ptr->current_text = (png_charp)png_malloc(png_ptr,
- (png_size_t)(length + 1));
- png_ptr->current_text[length] = '\0';
- png_ptr->current_text_ptr = png_ptr->current_text;
- png_ptr->current_text_size = (png_size_t)length;
- png_ptr->current_text_left = (png_size_t)length;
- png_ptr->process_mode = PNG_READ_iTXt_MODE;
-}
-
-void /* PRIVATE */
-png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
-{
-
- if (png_ptr->buffer_size && png_ptr->current_text_left)
- {
- png_size_t text_size;
-
- if (png_ptr->buffer_size < png_ptr->current_text_left)
- text_size = png_ptr->buffer_size;
-
- else
- text_size = png_ptr->current_text_left;
-
- png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
- png_ptr->current_text_left -= text_size;
- png_ptr->current_text_ptr += text_size;
- }
- if (!(png_ptr->current_text_left))
- {
- png_textp text_ptr;
- png_charp key;
- int comp_flag;
- png_charp lang;
- png_charp lang_key;
- png_charp text;
- int ret;
-
- if (png_ptr->buffer_size < 4)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_push_crc_finish(png_ptr);
-
-#ifdef PNG_MAX_MALLOC_64K
- if (png_ptr->skip_length)
- return;
-#endif
-
- key = png_ptr->current_text;
-
- for (lang = key; *lang; lang++)
- /* Empty loop */ ;
-
- if (lang < key + png_ptr->current_text_size - 3)
- lang++;
-
- comp_flag = *lang++;
- lang++; /* Skip comp_type, always zero */
-
- for (lang_key = lang; *lang_key; lang_key++)
- /* Empty loop */ ;
-
- lang_key++; /* Skip NUL separator */
-
- text=lang_key;
-
- if (lang_key < key + png_ptr->current_text_size - 1)
- {
- for (; *text; text++)
- /* Empty loop */ ;
- }
-
- if (text < key + png_ptr->current_text_size)
- text++;
-
- text_ptr = (png_textp)png_malloc(png_ptr,
- png_sizeof(png_text));
-
- text_ptr->compression = comp_flag + 2;
- text_ptr->key = key;
- text_ptr->lang = lang;
- text_ptr->lang_key = lang_key;
- text_ptr->text = text;
- text_ptr->text_length = 0;
- text_ptr->itxt_length = png_strlen(text);
-
- ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
-
- png_ptr->current_text = NULL;
-
- png_free(png_ptr, text_ptr);
- if (ret)
- png_warning(png_ptr, "Insufficient memory to store iTXt chunk");
- }
-}
-#endif
-
-/* This function is called when we haven't found a handler for this
- * chunk. If there isn't a problem with the chunk itself (ie a bad chunk
- * name or a critical chunk), the chunk is (currently) silently ignored.
- */
-void /* PRIVATE */
-png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
- length)
-{
- png_uint_32 skip = 0;
-
- if (!(png_ptr->chunk_name[0] & 0x20))
- {
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
- if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
- PNG_HANDLE_CHUNK_ALWAYS
-#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
- && png_ptr->read_user_chunk_fn == NULL
-#endif
- )
-#endif
- png_chunk_error(png_ptr, "unknown critical chunk");
- PNG_UNUSED(info_ptr) /* To quiet some compiler warnings */
- }
-
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
- if (png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
- {
-#ifdef PNG_MAX_MALLOC_64K
- if (length > (png_uint_32)65535L)
- {
- png_warning(png_ptr, "unknown chunk too large to fit in memory");
- skip = length - (png_uint_32)65535L;
- length = (png_uint_32)65535L;
- }
-#endif
- png_memcpy((png_charp)png_ptr->unknown_chunk.name,
- (png_charp)png_ptr->chunk_name,
- png_sizeof(png_ptr->unknown_chunk.name));
- png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name) - 1]
- = '\0';
-
- png_ptr->unknown_chunk.size = (png_size_t)length;
-
- if (length == 0)
- png_ptr->unknown_chunk.data = NULL;
-
- else
- {
- png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr,
- (png_size_t)length);
- png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
- }
-
-#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
- if (png_ptr->read_user_chunk_fn != NULL)
- {
- /* Callback to user unknown chunk handler */
- int ret;
- ret = (*(png_ptr->read_user_chunk_fn))
- (png_ptr, &png_ptr->unknown_chunk);
-
- if (ret < 0)
- png_chunk_error(png_ptr, "error in user chunk");
-
- if (ret == 0)
- {
- if (!(png_ptr->chunk_name[0] & 0x20))
- if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
- PNG_HANDLE_CHUNK_ALWAYS)
- png_chunk_error(png_ptr, "unknown critical chunk");
- png_set_unknown_chunks(png_ptr, info_ptr,
- &png_ptr->unknown_chunk, 1);
- }
- }
-
- else
-#endif
- png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
- png_free(png_ptr, png_ptr->unknown_chunk.data);
- png_ptr->unknown_chunk.data = NULL;
- }
-
- else
-#endif
- skip=length;
- png_push_crc_skip(png_ptr, skip);
-}
-
void /* PRIVATE */
png_push_have_info(png_structp png_ptr, png_infop info_ptr)
{
@@ -1726,24 +1271,27 @@
(int)png_ptr->pass);
}
+#ifdef PNG_READ_INTERLACING_SUPPORTED
void PNGAPI
-png_progressive_combine_row(png_structp png_ptr,
- png_bytep old_row, png_bytep new_row)
+png_progressive_combine_row (png_structp png_ptr, png_bytep old_row,
+ png_const_bytep new_row)
{
- PNG_CONST int FARDATA png_pass_dsp_mask[7] =
- {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
-
if (png_ptr == NULL)
return;
- if (new_row != NULL) /* new_row must == png_ptr->row_buf here. */
- png_combine_row(png_ptr, old_row, png_pass_dsp_mask[png_ptr->pass]);
+ /* new_row is a flag here - if it is NULL then the app callback was called
+ * from an empty row (see the calls to png_struct::row_fn below), otherwise
+ * it must be png_ptr->row_buf+1
+ */
+ if (new_row != NULL)
+ png_combine_row(png_ptr, old_row, 1/*display*/);
}
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
void PNGAPI
png_set_progressive_read_fn(png_structp png_ptr, png_voidp progressive_ptr,
- png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
- png_progressive_end_ptr end_fn)
+ png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
+ png_progressive_end_ptr end_fn)
{
if (png_ptr == NULL)
return;
diff --git a/pngpriv.h b/pngpriv.h
index e798dfe..67e486c 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -1,12 +1,13 @@
/* pngpriv.h - private declarations for use inside libpng
*
- * libpng version 1.4.9beta01 - July 8, 2011
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
+ * Last changed in libpng 1.5.7 [December 15, 2011]
+ *
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
* and license in png.h
@@ -24,36 +25,265 @@
#ifndef PNGPRIV_H
#define PNGPRIV_H
-#ifndef PNG_VERSION_INFO_ONLY
+/* Feature Test Macros. The following are defined here to ensure that correctly
+ * implemented libraries reveal the APIs libpng needs to build and hide those
+ * that are not needed and potentially damaging to the compilation.
+ *
+ * Feature Test Macros must be defined before any system header is included (see
+ * POSIX 1003.1 2.8.2 "POSIX Symbols."
+ *
+ * These macros only have an effect if the operating system supports either
+ * POSIX 1003.1 or C99, or both. On other operating systems (particularly
+ * Windows/Visual Studio) there is no effect; the OS specific tests below are
+ * still required (as of 2011-05-02.)
+ */
+#define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */
-#if defined(_AIX) && defined(_ALL_SOURCE)
- /* On AIX if _ALL_SOURCE is defined standard header files (including
- * stdlib.h) define identifiers that are not permitted by the ANSI and
- * POSIX standards. In particular 'jmpbuf' is #defined and this will
- * prevent compilation of libpng. The following prevents this:
- */
-# undef _ALL_SOURCE
+/* This is required for the definition of abort(), used as a last ditch
+ * error handler when all else fails.
+ */
+#include <stdlib.h>
+
+/* This is used to find 'offsetof', used below for alignment tests. */
+#include <stddef.h>
+
+#define PNGLIB_BUILD /*libpng is being built, not used*/
+
+#ifdef PNG_USER_CONFIG
+# include "pngusr.h"
+ /* These should have been defined in pngusr.h */
+# ifndef PNG_USER_PRIVATEBUILD
+# define PNG_USER_PRIVATEBUILD "Custom libpng build"
+# endif
+# ifndef PNG_USER_DLLFNAME_POSTFIX
+# define PNG_USER_DLLFNAME_POSTFIX "Cb"
+# endif
#endif
-#include <stdlib.h>
+/* Is this a build of a DLL where compilation of the object modules requires
+ * different preprocessor settings to those required for a simple library? If
+ * so PNG_BUILD_DLL must be set.
+ *
+ * If libpng is used inside a DLL but that DLL does not export the libpng APIs
+ * PNG_BUILD_DLL must not be set. To avoid the code below kicking in build a
+ * static library of libpng then link the DLL against that.
+ */
+#ifndef PNG_BUILD_DLL
+# ifdef DLL_EXPORT
+ /* This is set by libtool when files are compiled for a DLL; libtool
+ * always compiles twice, even on systems where it isn't necessary. Set
+ * PNG_BUILD_DLL in case it is necessary:
+ */
+# define PNG_BUILD_DLL
+# else
+# ifdef _WINDLL
+ /* This is set by the Microsoft Visual Studio IDE in projects that
+ * build a DLL. It can't easily be removed from those projects (it
+ * isn't visible in the Visual Studio UI) so it is a fairly reliable
+ * indication that PNG_IMPEXP needs to be set to the DLL export
+ * attributes.
+ */
+# define PNG_BUILD_DLL
+# else
+# ifdef __DLL__
+ /* This is set by the Borland C system when compiling for a DLL
+ * (as above.)
+ */
+# define PNG_BUILD_DLL
+# else
+ /* Add additional compiler cases here. */
+# endif
+# endif
+# endif
+#endif /* Setting PNG_BUILD_DLL if required */
+
+/* See pngconf.h for more details: the builder of the library may set this on
+ * the command line to the right thing for the specific compilation system or it
+ * may be automagically set above (at present we know of no system where it does
+ * need to be set on the command line.)
+ *
+ * PNG_IMPEXP must be set here when building the library to prevent pngconf.h
+ * setting it to the "import" setting for a DLL build.
+ */
+#ifndef PNG_IMPEXP
+# ifdef PNG_BUILD_DLL
+# define PNG_IMPEXP PNG_DLL_EXPORT
+# else
+ /* Not building a DLL, or the DLL doesn't require specific export
+ * definitions.
+ */
+# define PNG_IMPEXP
+# endif
+#endif
+
+/* No warnings for private or deprecated functions in the build: */
+#ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED
+#endif
+#ifndef PNG_PRIVATE
+# define PNG_PRIVATE
+#endif
+
+#include "png.h"
+#include "pnginfo.h"
+#include "pngstruct.h"
+
+/* pngconf.h does not set PNG_DLL_EXPORT unless it is required, so: */
+#ifndef PNG_DLL_EXPORT
+# define PNG_DLL_EXPORT
+#endif
+
+/* This is used for 16 bit gamma tables - only the top level pointers are const,
+ * this could be changed:
+ */
+typedef PNG_CONST png_uint_16p FAR * png_const_uint_16pp;
+
+/* Added at libpng-1.2.9 */
+/* Moved to pngpriv.h at libpng-1.5.0 */
+
+/* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure"
+ * script. We may need it here to get the correct configuration on things
+ * like limits.
+ */
+#ifdef PNG_CONFIGURE_LIBPNG
+# ifdef HAVE_CONFIG_H
+# include "config.h"
+# endif
+#endif
+
+/* Moved to pngpriv.h at libpng-1.5.0 */
+/* NOTE: some of these may have been used in external applications as
+ * these definitions were exposed in pngconf.h prior to 1.5.
+ */
+
+/* If you are running on a machine where you cannot allocate more
+ * than 64K of memory at once, uncomment this. While libpng will not
+ * normally need that much memory in a chunk (unless you load up a very
+ * large file), zlib needs to know how big of a chunk it can use, and
+ * libpng thus makes sure to check any memory allocation to verify it
+ * will fit into memory.
+ *
+ * zlib provides 'MAXSEG_64K' which, if defined, indicates the
+ * same limit and pngconf.h (already included) sets the limit
+ * if certain operating systems are detected.
+ */
+#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
+# define PNG_MAX_MALLOC_64K
+#endif
+
+#ifndef PNG_UNUSED
+/* Unused formal parameter warnings are silenced using the following macro
+ * which is expected to have no bad effects on performance (optimizing
+ * compilers will probably remove it entirely). Note that if you replace
+ * it with something other than whitespace, you must include the terminating
+ * semicolon.
+ */
+# define PNG_UNUSED(param) (void)param;
+#endif
+
+/* Just a little check that someone hasn't tried to define something
+ * contradictory.
+ */
+#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
+# undef PNG_ZBUF_SIZE
+# define PNG_ZBUF_SIZE 65536L
+#endif
+
+/* PNG_STATIC is used to mark internal file scope functions if they need to be
+ * accessed for implementation tests (see the code in tests/?*).
+ */
+#ifndef PNG_STATIC
+# define PNG_STATIC static
+#endif
+
+/* C99 restrict is used where possible, to do this 'restrict' is defined as
+ * empty if we can't be sure it is supported. configure builds have already
+ * done this work.
+ */
+#ifdef PNG_CONFIGURE_LIBPNG
+# define PNG_RESTRICT restrict
+#else
+ /* Modern compilers support restrict, but assume not for anything not
+ * recognized here:
+ */
+# if defined __GNUC__ || defined _MSC_VER || defined __WATCOMC__
+# define PNG_RESTRICT restrict
+# else
+# define PNG_RESTRICT
+# endif
+#endif
+
+/* If warnings or errors are turned off the code is disabled or redirected here.
+ * From 1.5.4 functions have been added to allow very limited formatting of
+ * error and warning messages - this code will also be disabled here.
+ */
+#ifdef PNG_WARNINGS_SUPPORTED
+# define PNG_WARNING_PARAMETERS(p) png_warning_parameters p;
+#else
+# define png_warning(s1,s2) ((void)(s1))
+# define png_chunk_warning(s1,s2) ((void)(s1))
+# define png_warning_parameter(p,number,string) ((void)0)
+# define png_warning_parameter_unsigned(p,number,format,value) ((void)0)
+# define png_warning_parameter_signed(p,number,format,value) ((void)0)
+# define png_formatted_warning(pp,p,message) ((void)(pp))
+# define PNG_WARNING_PARAMETERS(p)
+#endif
+#ifndef PNG_ERROR_TEXT_SUPPORTED
+# define png_error(s1,s2) png_err(s1)
+# define png_chunk_error(s1,s2) png_err(s1)
+# define png_fixed_error(s1,s2) png_err(s1)
+#endif
+
+/* C allows up-casts from (void*) to any pointer and (const void*) to any
+ * pointer to a const object. C++ regards this as a type error and requires an
+ * explicit, static, cast and provides the static_cast<> rune to ensure that
+ * const is not cast away.
+ */
+#ifdef __cplusplus
+# define png_voidcast(type, value) static_cast<type>(value)
+#else
+# define png_voidcast(type, value) (value)
+#endif /* __cplusplus */
#ifndef PNG_EXTERN
/* The functions exported by PNG_EXTERN are internal functions, which
* aren't usually used outside the library (as far as I know), so it is
* debatable if they should be exported at all. In the future, when it
* is possible to have run-time registry of chunk-handling functions,
- * some of these will be made available again.
-# define PNG_EXTERN extern
+ * some of these might be made available again.
+ *
+ * 1.5.7: turned the use of 'extern' back on, since it is localized to pngpriv.h
+ * it should be safe now (it is unclear why it was turned off.)
*/
-# define PNG_EXTERN
+# define PNG_EXTERN extern
+#endif
+
+/* Some fixed point APIs are still required even if not exported because
+ * they get used by the corresponding floating point APIs. This magic
+ * deals with this:
+ */
+#ifdef PNG_FIXED_POINT_SUPPORTED
+# define PNGFAPI PNGAPI
+#else
+# define PNGFAPI /* PRIVATE */
#endif
/* Other defines specific to compilers can go here. Try to keep
* them inside an appropriate ifdef/endif pair for portability.
*/
+#if defined(PNG_FLOATING_POINT_SUPPORTED) ||\
+ defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)
+ /* png.c requires the following ANSI-C constants if the conversion of
+ * floating point to ASCII is implemented therein:
+ *
+ * DBL_DIG Maximum number of decimal digits (can be set to any constant)
+ * DBL_MIN Smallest normalized fp number (can be set to an arbitrary value)
+ * DBL_MAX Maximum floating point number (can be set to an arbitrary value)
+ */
+# include <float.h>
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-# ifdef MACOS
+# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
+ defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
/* We need to check that <math.h> hasn't already been included earlier
* as it seems it doesn't agree with <fp.h>, yet we should really use
* <fp.h> if possible.
@@ -72,11 +302,6 @@
# endif
#endif
-/* Codewarrior on NT has linking problems without this. */
-#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
-# define PNG_ALWAYS_EXTERN
-#endif
-
/* This provides the non-ANSI (far) memory allocation routines. */
#if defined(__TURBOC__) && defined(__MSDOS__)
# include <mem.h>
@@ -88,13 +313,109 @@
# include <windows.h> /* defines _WINDOWS_ macro */
#endif
-/* Various modes of operation. Note that after an init, mode is set to
- * zero automatically when the structure is created.
+/* Moved here around 1.5.0beta36 from pngconf.h */
+/* Users may want to use these so they are not private. Any library
+ * functions that are passed far data must be model-independent.
*/
-#define PNG_HAVE_IHDR 0x01
-#define PNG_HAVE_PLTE 0x02
+
+/* Memory model/platform independent fns */
+#ifndef PNG_ABORT
+# ifdef _WINDOWS_
+# define PNG_ABORT() ExitProcess(0)
+# else
+# define PNG_ABORT() abort()
+# endif
+#endif
+
+#ifdef USE_FAR_KEYWORD
+/* Use this to make far-to-near assignments */
+# define CHECK 1
+# define NOCHECK 0
+# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
+# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
+# define png_strlen _fstrlen
+# define png_memcmp _fmemcmp /* SJT: added */
+# define png_memcpy _fmemcpy
+# define png_memset _fmemset
+#else
+# ifdef _WINDOWS_ /* Favor Windows over C runtime fns */
+# define CVT_PTR(ptr) (ptr)
+# define CVT_PTR_NOCHECK(ptr) (ptr)
+# define png_strlen lstrlenA
+# define png_memcmp memcmp
+# define png_memcpy CopyMemory
+# define png_memset memset
+# else
+# define CVT_PTR(ptr) (ptr)
+# define CVT_PTR_NOCHECK(ptr) (ptr)
+# define png_strlen strlen
+# define png_memcmp memcmp /* SJT: added */
+# define png_memcpy memcpy
+# define png_memset memset
+# endif
+#endif
+
+/* These macros may need to be architecture dependent. */
+#define PNG_ALIGN_NONE 0 /* do not use data alignment */
+#define PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */
+#ifdef offsetof
+# define PNG_ALIGN_OFFSET 2 /* use offsetof to determine alignment */
+#else
+# define PNG_ALIGN_OFFSET -1 /* prevent the use of this */
+#endif
+#define PNG_ALIGN_SIZE 3 /* use sizeof to determine alignment */
+
+#ifndef PNG_ALIGN_TYPE
+ /* Default to using aligned access optimizations and requiring alignment to a
+ * multiple of the data type size. Override in a compiler specific fashion
+ * if necessary by inserting tests here:
+ */
+# define PNG_ALIGN_TYPE PNG_ALIGN_SIZE
+#endif
+
+#if PNG_ALIGN_TYPE == PNG_ALIGN_SIZE
+ /* This is used because in some compiler implementations non-aligned
+ * structure members are supported, so the offsetof approach below fails.
+ * Set PNG_ALIGN_TO_SIZE=0 for compiler combinations where unaligned access
+ * is good for performance. Do not do this unless you have tested the result
+ * and understand it.
+ */
+# define png_alignof(type) (sizeof (type))
+#else
+# if PNG_ALIGN_TYPE == PNG_ALIGN_OFFSET
+# define png_alignof(type) offsetof(struct{char c; type t;}, t)
+# else
+# if PNG_ALIGN_TYPE == PNG_ALIGN_ALWAYS
+# define png_alignof(type) (1)
+# endif
+ /* Else leave png_alignof undefined to prevent use thereof */
+# endif
+#endif
+
+/* This implicitly assumes alignment is always to a power of 2. */
+#ifdef png_alignof
+# define png_isaligned(ptr, type)\
+ ((((const char*)ptr-(const char*)0) & (png_alignof(type)-1)) == 0)
+#else
+# define png_isaligned(ptr, type) 0
+#endif
+
+/* End of memory model/platform independent support */
+/* End of 1.5.0beta36 move from pngconf.h */
+
+/* CONSTANTS and UTILITY MACROS
+ * These are used internally by libpng and not exposed in the API
+ */
+
+/* Various modes of operation. Note that after an init, mode is set to
+ * zero automatically when the structure is created. Three of these
+ * are defined in png.h because they need to be visible to applications
+ * that call png_set_unknown_chunk().
+ */
+/* #define PNG_HAVE_IHDR 0x01 (defined in png.h) */
+/* #define PNG_HAVE_PLTE 0x02 (defined in png.h) */
#define PNG_HAVE_IDAT 0x04
-#define PNG_AFTER_IDAT 0x08 /* Have complete zlib datastream */
+/* #define PNG_AFTER_IDAT 0x08 (defined in png.h) */
#define PNG_HAVE_IEND 0x10
#define PNG_HAVE_gAMA 0x20
#define PNG_HAVE_cHRM 0x40
@@ -113,41 +434,38 @@
#define PNG_SHIFT 0x0008
#define PNG_SWAP_BYTES 0x0010
#define PNG_INVERT_MONO 0x0020
-#define PNG_QUANTIZE 0x0040 /* formerly PNG_DITHER */
-#define PNG_BACKGROUND 0x0080
+#define PNG_QUANTIZE 0x0040
+#define PNG_COMPOSE 0x0080 /* Was PNG_BACKGROUND */
#define PNG_BACKGROUND_EXPAND 0x0100
- /* 0x0200 unused */
-#define PNG_16_TO_8 0x0400
+#define PNG_EXPAND_16 0x0200 /* Added to libpng 1.5.2 */
+#define PNG_16_TO_8 0x0400 /* Becomes 'chop' in 1.5.4 */
#define PNG_RGBA 0x0800
#define PNG_EXPAND 0x1000
#define PNG_GAMMA 0x2000
#define PNG_GRAY_TO_RGB 0x4000
-#define PNG_FILLER 0x8000L
-#define PNG_PACKSWAP 0x10000L
-#define PNG_SWAP_ALPHA 0x20000L
-#define PNG_STRIP_ALPHA 0x40000L
-#define PNG_INVERT_ALPHA 0x80000L
-#define PNG_USER_TRANSFORM 0x100000L
-#define PNG_RGB_TO_GRAY_ERR 0x200000L
-#define PNG_RGB_TO_GRAY_WARN 0x400000L
-#define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */
- /* 0x800000L Unused */
-#define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */
-#define PNG_EXPAND_tRNS 0x2000000L /* Added to libpng-1.2.9 */
- /* 0x4000000L unused */
- /* 0x8000000L unused */
- /* 0x10000000L unused */
- /* 0x20000000L unused */
- /* 0x40000000L unused */
-
+#define PNG_FILLER 0x8000
+#define PNG_PACKSWAP 0x10000
+#define PNG_SWAP_ALPHA 0x20000
+#define PNG_STRIP_ALPHA 0x40000
+#define PNG_INVERT_ALPHA 0x80000
+#define PNG_USER_TRANSFORM 0x100000
+#define PNG_RGB_TO_GRAY_ERR 0x200000
+#define PNG_RGB_TO_GRAY_WARN 0x400000
+#define PNG_RGB_TO_GRAY 0x600000 /* two bits, RGB_TO_GRAY_ERR|WARN */
+#define PNG_ENCODE_ALPHA 0x800000 /* Added to libpng-1.5.4 */
+#define PNG_ADD_ALPHA 0x1000000 /* Added to libpng-1.2.7 */
+#define PNG_EXPAND_tRNS 0x2000000 /* Added to libpng-1.2.9 */
+#define PNG_SCALE_16_TO_8 0x4000000 /* Added to libpng-1.5.4 */
+ /* 0x8000000 unused */
+ /* 0x10000000 unused */
+ /* 0x20000000 unused */
+ /* 0x40000000 unused */
/* Flags for png_create_struct */
#define PNG_STRUCT_PNG 0x0001
#define PNG_STRUCT_INFO 0x0002
/* Scaling factor for filter heuristic weighting calculations */
-#define PNG_WEIGHT_SHIFT 8
#define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT))
-#define PNG_COST_SHIFT 3
#define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT))
/* Flags for the png_ptr->flags rather than declaring a byte for each one */
@@ -163,25 +481,25 @@
#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200
#define PNG_FLAG_CRC_CRITICAL_USE 0x0400
#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800
- /* 0x1000 unused */
- /* 0x2000 unused */
- /* 0x4000 unused */
-#define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000L
-#define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000L
-#define PNG_FLAG_LIBRARY_MISMATCH 0x20000L
-#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000L
-#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000L
-#define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000L
-#define PNG_FLAG_ADD_ALPHA 0x200000L /* Added to libpng-1.2.8 */
-#define PNG_FLAG_STRIP_ALPHA 0x400000L /* Added to libpng-1.2.8 */
-#define PNG_FLAG_BENIGN_ERRORS_WARN 0x800000L /* Added to libpng-1.4.0 */
- /* 0x1000000L unused */
- /* 0x2000000L unused */
- /* 0x4000000L unused */
- /* 0x8000000L unused */
- /* 0x10000000L unused */
- /* 0x20000000L unused */
- /* 0x40000000L unused */
+#define PNG_FLAG_ASSUME_sRGB 0x1000 /* Added to libpng-1.5.4 */
+#define PNG_FLAG_OPTIMIZE_ALPHA 0x2000 /* Added to libpng-1.5.4 */
+#define PNG_FLAG_DETECT_UNINITIALIZED 0x4000 /* Added to libpng-1.5.4 */
+#define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000
+#define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000
+#define PNG_FLAG_LIBRARY_MISMATCH 0x20000
+#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000
+#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000
+#define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000
+ /* 0x200000 unused */
+ /* 0x400000 unused */
+#define PNG_FLAG_BENIGN_ERRORS_WARN 0x800000 /* Added to libpng-1.4.0 */
+#define PNG_FLAG_ZTXT_CUSTOM_STRATEGY 0x1000000 /* 5 lines added */
+#define PNG_FLAG_ZTXT_CUSTOM_LEVEL 0x2000000 /* to libpng-1.5.4 */
+#define PNG_FLAG_ZTXT_CUSTOM_MEM_LEVEL 0x4000000
+#define PNG_FLAG_ZTXT_CUSTOM_WINDOW_BITS 0x8000000
+#define PNG_FLAG_ZTXT_CUSTOM_METHOD 0x10000000
+ /* 0x20000000 unused */
+ /* 0x40000000 unused */
#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
PNG_FLAG_CRC_ANCILLARY_NOWARN)
@@ -192,6 +510,18 @@
#define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \
PNG_FLAG_CRC_CRITICAL_MASK)
+/* zlib.h declares a magic type 'uInt' that limits the amount of data that zlib
+ * can handle at once. This type need be no larger than 16 bits (so maximum of
+ * 65535), this define allows us to discover how big it is, but limited by the
+ * maximuum for png_size_t. The value can be overriden in a library build
+ * (pngusr.h, or set it in CPPFLAGS) and it works to set it to a considerably
+ * lower value (e.g. 255 works). A lower value may help memory usage (slightly)
+ * and may even improve performance on some systems (and degrade it on others.)
+ */
+#ifndef ZLIB_IO_MAX
+# define ZLIB_IO_MAX ((uInt)-1)
+#endif
+
/* Save typing and make code easier to understand */
#define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \
@@ -210,34 +540,116 @@
* integers, "value" a variable. Added to libpng-1.2.6 JB
*/
#define PNG_OUT_OF_RANGE(value, ideal, delta) \
- ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) )
+ ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) )
-/* Constant strings for known chunk types. If you need to add a chunk,
- * define the name here, and add an invocation of the macro wherever it's
- * needed.
+/* Conversions between fixed and floating point, only defined if
+ * required (to make sure the code doesn't accidentally use float
+ * when it is supposedly disabled.)
*/
-#define PNG_IHDR PNG_CONST png_byte png_IHDR[5] = { 73, 72, 68, 82, '\0'}
-#define PNG_IDAT PNG_CONST png_byte png_IDAT[5] = { 73, 68, 65, 84, '\0'}
-#define PNG_IEND PNG_CONST png_byte png_IEND[5] = { 73, 69, 78, 68, '\0'}
-#define PNG_PLTE PNG_CONST png_byte png_PLTE[5] = { 80, 76, 84, 69, '\0'}
-#define PNG_bKGD PNG_CONST png_byte png_bKGD[5] = { 98, 75, 71, 68, '\0'}
-#define PNG_cHRM PNG_CONST png_byte png_cHRM[5] = { 99, 72, 82, 77, '\0'}
-#define PNG_gAMA PNG_CONST png_byte png_gAMA[5] = {103, 65, 77, 65, '\0'}
-#define PNG_hIST PNG_CONST png_byte png_hIST[5] = {104, 73, 83, 84, '\0'}
-#define PNG_iCCP PNG_CONST png_byte png_iCCP[5] = {105, 67, 67, 80, '\0'}
-#define PNG_iTXt PNG_CONST png_byte png_iTXt[5] = {105, 84, 88, 116, '\0'}
-#define PNG_oFFs PNG_CONST png_byte png_oFFs[5] = {111, 70, 70, 115, '\0'}
-#define PNG_pCAL PNG_CONST png_byte png_pCAL[5] = {112, 67, 65, 76, '\0'}
-#define PNG_sCAL PNG_CONST png_byte png_sCAL[5] = {115, 67, 65, 76, '\0'}
-#define PNG_pHYs PNG_CONST png_byte png_pHYs[5] = {112, 72, 89, 115, '\0'}
-#define PNG_sBIT PNG_CONST png_byte png_sBIT[5] = {115, 66, 73, 84, '\0'}
-#define PNG_sPLT PNG_CONST png_byte png_sPLT[5] = {115, 80, 76, 84, '\0'}
-#define PNG_sRGB PNG_CONST png_byte png_sRGB[5] = {115, 82, 71, 66, '\0'}
-#define PNG_sTER PNG_CONST png_byte png_sTER[5] = {115, 84, 69, 82, '\0'}
-#define PNG_tEXt PNG_CONST png_byte png_tEXt[5] = {116, 69, 88, 116, '\0'}
-#define PNG_tIME PNG_CONST png_byte png_tIME[5] = {116, 73, 77, 69, '\0'}
-#define PNG_tRNS PNG_CONST png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'}
-#define PNG_zTXt PNG_CONST png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'}
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+/* The floating point conversion can't overflow, though it can and
+ * does lose accuracy relative to the original fixed point value.
+ * In practice this doesn't matter because png_fixed_point only
+ * stores numbers with very low precision. The png_ptr and s
+ * arguments are unused by default but are there in case error
+ * checking becomes a requirement.
+ */
+#define png_float(png_ptr, fixed, s) (.00001 * (fixed))
+
+/* The fixed point conversion performs range checking and evaluates
+ * its argument multiple times, so must be used with care. The
+ * range checking uses the PNG specification values for a signed
+ * 32 bit fixed point value except that the values are deliberately
+ * rounded-to-zero to an integral value - 21474 (21474.83 is roughly
+ * (2^31-1) * 100000). 's' is a string that describes the value being
+ * converted.
+ *
+ * NOTE: this macro will raise a png_error if the range check fails,
+ * therefore it is normally only appropriate to use this on values
+ * that come from API calls or other sources where an out of range
+ * error indicates a programming error, not a data error!
+ *
+ * NOTE: by default this is off - the macro is not used - because the
+ * function call saves a lot of code.
+ */
+#ifdef PNG_FIXED_POINT_MACRO_SUPPORTED
+#define png_fixed(png_ptr, fp, s) ((fp) <= 21474 && (fp) >= -21474 ?\
+ ((png_fixed_point)(100000 * (fp))) : (png_fixed_error(png_ptr, s),0))
+#else
+PNG_EXTERN png_fixed_point png_fixed PNGARG((png_structp png_ptr, double fp,
+ png_const_charp text));
+#endif
+#endif
+
+/* Constants for known chunk types. If you need to add a chunk, define the name
+ * here. For historical reasons these constants have the form png_<name>; i.e.
+ * the prefix is lower case. Please use decimal values as the parameters to
+ * match the ISO PNG specification and to avoid relying on the C locale
+ * interpretation of character values.
+ *
+ * Prior to 1.5.6 these constants were strings, as of 1.5.6 png_uint_32 values
+ * are computed and a new macro (PNG_STRING_FROM_CHUNK) added to allow a string
+ * to be generated if required.
+ *
+ * PNG_32b correctly produces a value shifted by up to 24 bits, even on
+ * architectures where (int) is only 16 bits.
+ */
+#define PNG_32b(b,s) ((png_uint_32)(b) << (s))
+#define PNG_CHUNK(b1,b2,b3,b4) \
+ (PNG_32b(b1,24) | PNG_32b(b2,16) | PNG_32b(b3,8) | PNG_32b(b4,0))
+
+#define png_IHDR PNG_CHUNK( 73, 72, 68, 82)
+#define png_IDAT PNG_CHUNK( 73, 68, 65, 84)
+#define png_IEND PNG_CHUNK( 73, 69, 78, 68)
+#define png_PLTE PNG_CHUNK( 80, 76, 84, 69)
+#define png_bKGD PNG_CHUNK( 98, 75, 71, 68)
+#define png_cHRM PNG_CHUNK( 99, 72, 82, 77)
+#define png_gAMA PNG_CHUNK(103, 65, 77, 65)
+#define png_hIST PNG_CHUNK(104, 73, 83, 84)
+#define png_iCCP PNG_CHUNK(105, 67, 67, 80)
+#define png_iTXt PNG_CHUNK(105, 84, 88, 116)
+#define png_oFFs PNG_CHUNK(111, 70, 70, 115)
+#define png_pCAL PNG_CHUNK(112, 67, 65, 76)
+#define png_sCAL PNG_CHUNK(115, 67, 65, 76)
+#define png_pHYs PNG_CHUNK(112, 72, 89, 115)
+#define png_sBIT PNG_CHUNK(115, 66, 73, 84)
+#define png_sPLT PNG_CHUNK(115, 80, 76, 84)
+#define png_sRGB PNG_CHUNK(115, 82, 71, 66)
+#define png_sTER PNG_CHUNK(115, 84, 69, 82)
+#define png_tEXt PNG_CHUNK(116, 69, 88, 116)
+#define png_tIME PNG_CHUNK(116, 73, 77, 69)
+#define png_tRNS PNG_CHUNK(116, 82, 78, 83)
+#define png_zTXt PNG_CHUNK(122, 84, 88, 116)
+
+/* The following will work on (signed char*) strings, whereas the get_uint_32
+ * macro will fail on top-bit-set values because of the sign extension.
+ */
+#define PNG_CHUNK_FROM_STRING(s)\
+ PNG_CHUNK(0xff&(s)[0], 0xff&(s)[1], 0xff&(s)[2], 0xff&(s)[3])
+
+/* This uses (char), not (png_byte) to avoid warnings on systems where (char) is
+ * signed and the argument is a (char[]) This macro will fail miserably on
+ * systems where (char) is more than 8 bits.
+ */
+#define PNG_STRING_FROM_CHUNK(s,c)\
+ (void)(((char*)(s))[0]=(char)((c)>>24), ((char*)(s))[1]=(char)((c)>>16),\
+ ((char*)(s))[2]=(char)((c)>>8), ((char*)(s))[3]=(char)((c)))
+
+/* Do the same but terminate with a null character. */
+#define PNG_CSTRING_FROM_CHUNK(s,c)\
+ (void)(PNG_STRING_FROM_CHUNK(s,c), ((char*)(s))[4] = 0)
+
+/* Test on flag values as defined in the spec (section 5.4): */
+#define PNG_CHUNK_ANCILLIARY(c) (1 & ((c) >> 29))
+#define PNG_CHUNK_CRITICAL(c) (!PNG_CHUNK_ANCILLIARY(c))
+#define PNG_CHUNK_PRIVATE(c) (1 & ((c) >> 21))
+#define PNG_CHUNK_RESERVED(c) (1 & ((c) >> 13))
+#define PNG_CHUNK_SAFE_TO_COPY(c) (1 & ((c) >> 5))
+
+/* Gamma values (new at libpng-1.5.4): */
+#define PNG_GAMMA_MAC_OLD 151724 /* Assume '1.8' is really 2.2/1.45! */
+#define PNG_GAMMA_MAC_INVERSE 65909
+#define PNG_GAMMA_sRGB_INVERSE 45455
/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
@@ -251,53 +663,64 @@
* be found in the files where the functions are located.
*/
+/* Check the user version string for compatibility, returns false if the version
+ * numbers aren't compatible.
+ */
+PNG_EXTERN int png_user_version_check(png_structp png_ptr,
+ png_const_charp user_png_ver);
+
/* Allocate memory for an internal libpng struct */
-PNG_EXTERN png_voidp png_create_struct PNGARG((int type));
+PNG_EXTERN PNG_FUNCTION(png_voidp,png_create_struct,PNGARG((int type)),
+ PNG_ALLOCATED);
/* Free memory from internal libpng struct */
PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr));
-PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr
- malloc_fn, png_voidp mem_ptr));
+PNG_EXTERN PNG_FUNCTION(png_voidp,png_create_struct_2,
+ PNGARG((int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)),
+ PNG_ALLOCATED);
PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr,
- png_free_ptr free_fn, png_voidp mem_ptr));
+ png_free_ptr free_fn, png_voidp mem_ptr));
/* Free any memory that info_ptr points to and reset struct. */
PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ png_infop info_ptr));
/* Function to allocate memory for zlib. PNGAPI is disallowed. */
-PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size));
+PNG_EXTERN PNG_FUNCTION(voidpf,png_zalloc,PNGARG((voidpf png_ptr, uInt items,
+ uInt size)),PNG_ALLOCATED);
/* Function to free memory for zlib. PNGAPI is disallowed. */
PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr));
-/* Next four functions are used internally as callbacks. PNGAPI is required
- * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3. */
+/* Next four functions are used internally as callbacks. PNGCBAPI is required
+ * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3, changed to
+ * PNGCBAPI at 1.5.0
+ */
-PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr,
- png_bytep data, png_size_t length));
+PNG_EXTERN void PNGCBAPI png_default_read_data PNGARG((png_structp png_ptr,
+ png_bytep data, png_size_t length));
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-PNG_EXTERN void PNGAPI png_push_fill_buffer PNGARG((png_structp png_ptr,
- png_bytep buffer, png_size_t length));
+PNG_EXTERN void PNGCBAPI png_push_fill_buffer PNGARG((png_structp png_ptr,
+ png_bytep buffer, png_size_t length));
#endif
-PNG_EXTERN void PNGAPI png_default_write_data PNGARG((png_structp png_ptr,
- png_bytep data, png_size_t length));
+PNG_EXTERN void PNGCBAPI png_default_write_data PNGARG((png_structp png_ptr,
+ png_bytep data, png_size_t length));
#ifdef PNG_WRITE_FLUSH_SUPPORTED
-#ifdef PNG_STDIO_SUPPORTED
-PNG_EXTERN void PNGAPI png_default_flush PNGARG((png_structp png_ptr));
-#endif
+# ifdef PNG_STDIO_SUPPORTED
+PNG_EXTERN void PNGCBAPI png_default_flush PNGARG((png_structp png_ptr));
+# endif
#endif
/* Reset the CRC variable */
PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr));
/* Write the "data" buffer to whatever output you are using */
-PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data,
- png_size_t length));
+PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr,
+ png_const_bytep data, png_size_t length));
/* Read and check the PNG file signature */
PNG_EXTERN void png_read_sig PNGARG((png_structp png_ptr, png_infop info_ptr));
@@ -307,18 +730,17 @@
/* Read data from whatever input you are using into the "data" buffer */
PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data,
- png_size_t length));
+ png_size_t length));
/* Read bytes into buf, and update png_ptr->crc */
PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf,
- png_size_t length));
+ png_size_t length));
/* Decompress data in a chunk that uses compression */
-#if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \
- defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED)
+#if defined(PNG_READ_COMPRESSED_TEXT_SUPPORTED)
PNG_EXTERN void png_decompress_chunk PNGARG((png_structp png_ptr,
- int comp_type, png_size_t chunklength, png_size_t prefix_length,
- png_size_t *data_length));
+ int comp_type, png_size_t chunklength, png_size_t prefix_length,
+ png_size_t *data_length));
#endif
/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */
@@ -331,8 +753,8 @@
* passing a maximum of 64K on systems that have this as a memory limit,
* since this is the maximum buffer size we can specify.
*/
-PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr,
- png_size_t length));
+PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr,
+ png_const_bytep ptr, png_size_t length));
#ifdef PNG_WRITE_FLUSH_SUPPORTED
PNG_EXTERN void png_flush PNGARG((png_structp png_ptr));
@@ -344,138 +766,133 @@
* information.
*/
PNG_EXTERN void png_write_IHDR PNGARG((png_structp png_ptr, png_uint_32 width,
- png_uint_32 height,
- int bit_depth, int color_type, int compression_method, int filter_method,
- int interlace_method));
+ png_uint_32 height,
+ int bit_depth, int color_type, int compression_method, int filter_method,
+ int interlace_method));
-PNG_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr, png_colorp palette,
- png_uint_32 num_pal));
+PNG_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr,
+ png_const_colorp palette, png_uint_32 num_pal));
PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data,
- png_size_t length));
+ png_size_t length));
PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr));
#ifdef PNG_WRITE_gAMA_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
+# ifdef PNG_FLOATING_POINT_SUPPORTED
PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma));
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
+# endif
+# ifdef PNG_FIXED_POINT_SUPPORTED
PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr,
png_fixed_point file_gamma));
-#endif
+# endif
#endif
#ifdef PNG_WRITE_sBIT_SUPPORTED
-PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit,
- int color_type));
+PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr,
+ png_const_color_8p sbit, int color_type));
#endif
#ifdef PNG_WRITE_cHRM_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
+# ifdef PNG_FLOATING_POINT_SUPPORTED
PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr,
- double white_x, double white_y,
- double red_x, double red_y, double green_x, double green_y,
- double blue_x, double blue_y));
-#endif
+ double white_x, double white_y,
+ double red_x, double red_y, double green_x, double green_y,
+ double blue_x, double blue_y));
+# endif
PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr,
- png_fixed_point int_white_x, png_fixed_point int_white_y,
- png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
- int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
- png_fixed_point int_blue_y));
+ png_fixed_point int_white_x, png_fixed_point int_white_y,
+ png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
+ int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
+ png_fixed_point int_blue_y));
#endif
#ifdef PNG_WRITE_sRGB_SUPPORTED
PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr,
- int intent));
+ int intent));
#endif
#ifdef PNG_WRITE_iCCP_SUPPORTED
PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr,
- png_charp name, int compression_type,
- png_charp profile, int proflen));
+ png_const_charp name, int compression_type,
+ png_const_charp profile, int proflen));
/* Note to maintainer: profile should be png_bytep */
#endif
#ifdef PNG_WRITE_sPLT_SUPPORTED
PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr,
- png_sPLT_tp palette));
+ png_const_sPLT_tp palette));
#endif
#ifdef PNG_WRITE_tRNS_SUPPORTED
-PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans,
- png_color_16p values, int number, int color_type));
+PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr,
+ png_const_bytep trans, png_const_color_16p values, int number,
+ int color_type));
#endif
#ifdef PNG_WRITE_bKGD_SUPPORTED
PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr,
- png_color_16p values, int color_type));
+ png_const_color_16p values, int color_type));
#endif
#ifdef PNG_WRITE_hIST_SUPPORTED
-PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist,
- int num_hist));
+PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr,
+ png_const_uint_16p hist, int num_hist));
#endif
+/* Chunks that have keywords */
#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \
defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr,
- png_charp key, png_charpp new_key));
+ png_const_charp key, png_charpp new_key));
#endif
#ifdef PNG_WRITE_tEXt_SUPPORTED
-PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key,
- png_charp text, png_size_t text_len));
+PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_const_charp key,
+ png_const_charp text, png_size_t text_len));
#endif
#ifdef PNG_WRITE_zTXt_SUPPORTED
-PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key,
- png_charp text, png_size_t text_len, int compression));
+PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_const_charp key,
+ png_const_charp text, png_size_t text_len, int compression));
#endif
#ifdef PNG_WRITE_iTXt_SUPPORTED
PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr,
- int compression, png_charp key, png_charp lang, png_charp lang_key,
- png_charp text));
+ int compression, png_const_charp key, png_const_charp lang,
+ png_const_charp lang_key, png_const_charp text));
#endif
#ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */
PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_textp text_ptr, int num_text));
+ png_infop info_ptr, png_const_textp text_ptr, int num_text));
#endif
#ifdef PNG_WRITE_oFFs_SUPPORTED
PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr,
- png_int_32 x_offset, png_int_32 y_offset, int unit_type));
+ png_int_32 x_offset, png_int_32 y_offset, int unit_type));
#endif
#ifdef PNG_WRITE_pCAL_SUPPORTED
PNG_EXTERN void png_write_pCAL PNGARG((png_structp png_ptr, png_charp purpose,
- png_int_32 X0, png_int_32 X1, int type, int nparams,
- png_charp units, png_charpp params));
+ png_int_32 X0, png_int_32 X1, int type, int nparams,
+ png_const_charp units, png_charpp params));
#endif
#ifdef PNG_WRITE_pHYs_SUPPORTED
PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr,
- png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit,
- int unit_type));
+ png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit,
+ int unit_type));
#endif
#ifdef PNG_WRITE_tIME_SUPPORTED
PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr,
- png_timep mod_time));
+ png_const_timep mod_time));
#endif
#ifdef PNG_WRITE_sCAL_SUPPORTED
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
-PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr,
- int unit, double width, double height));
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr,
- int unit, png_charp width, png_charp height));
-#endif
-#endif
+ int unit, png_const_charp width, png_const_charp height));
#endif
/* Called when finished processing a row of data */
@@ -484,22 +901,44 @@
/* Internal use only. Called before first row of data */
PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));
-#ifdef PNG_READ_GAMMA_SUPPORTED
-PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr,
- png_byte bit_depth));
+/* Combine a row of data, dealing with alpha, etc. if requested. 'row' is an
+ * array of png_ptr->width pixels. If the image is not interlaced or this
+ * is the final pass this just does a png_memcpy, otherwise the "display" flag
+ * is used to determine whether to copy pixels that are not in the current pass.
+ *
+ * Because 'png_do_read_interlace' (below) replicates pixels this allows this
+ * function to achieve the documented 'blocky' appearance during interlaced read
+ * if display is 1 and the 'sparkle' appearance, where existing pixels in 'row'
+ * are not changed if they are not in the current pass, when display is 0.
+ *
+ * 'display' must be 0 or 1, otherwise the memcpy will be done regardless.
+ *
+ * The API always reads from the png_struct row buffer and always assumes that
+ * it is full width (png_do_read_interlace has already been called.)
+ *
+ * This function is only ever used to write to row buffers provided by the
+ * caller of the relevant libpng API and the row must have already been
+ * transformed by the read transformations.
+ *
+ * The PNG_USE_COMPILE_TIME_MASKS option causes generation of pre-computed
+ * bitmasks for use within the code, otherwise runtime generated masks are used.
+ * The default is compile time masks.
+ */
+#ifndef PNG_USE_COMPILE_TIME_MASKS
+# define PNG_USE_COMPILE_TIME_MASKS 1
#endif
-
-/* Combine a row of data, dealing with alpha, etc. if requested */
PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
- int mask));
+ int display));
#ifdef PNG_READ_INTERLACING_SUPPORTED
-/* Expand an interlaced row */
-/* OLD pre-1.0.9 interface:
-PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info,
- png_bytep row, int pass, png_uint_32 transformations));
+/* Expand an interlaced row: the 'row_info' describes the pass data that has
+ * been read in and must correspond to the pixels in 'row', the pixels are
+ * expanded (moved apart) in 'row' to match the final layout, when doing this
+ * the pixels are *replicated* to the intervening space. This is essential for
+ * the correct operation of png_combine_row, above.
*/
-PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr));
+PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info,
+ png_bytep row, int pass, png_uint_32 transformations));
#endif
/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */
@@ -507,109 +946,140 @@
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* Grab pixels out of a row for an interlaced pass */
PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
- png_bytep row, int pass));
+ png_bytep row, int pass));
#endif
-/* Unfilter a row */
-PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr,
- png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter));
+/* Unfilter a row: check the filter value before calling this, there is no point
+ * calling it for PNG_FILTER_VALUE_NONE.
+ */
+PNG_EXTERN void png_read_filter_row PNGARG((png_structp pp, png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row, int filter));
+
+PNG_EXTERN void png_read_filter_row_up_neon PNGARG((png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_sub3_neon PNGARG((png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_sub4_neon PNGARG((png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_avg3_neon PNGARG((png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_avg4_neon PNGARG((png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_paeth3_neon PNGARG((png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_paeth4_neon PNGARG((png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row));
/* Choose the best filter to use and filter the row data */
PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr,
- png_row_infop row_info));
+ png_row_infop row_info));
-/* Write out the filtered row. */
-PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr,
- png_bytep filtered_row));
/* Finish a row while reading, dealing with interlacing passes, etc. */
PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr));
/* Initialize the row buffers, etc. */
PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr));
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
/* Optional call to update the users info structure */
PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ png_infop info_ptr));
+#endif
/* These are the functions that do the transformations */
#ifdef PNG_READ_FILLER_SUPPORTED
PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info,
- png_bytep row, png_uint_32 filler, png_uint_32 flags));
+ png_bytep row, png_uint_32 filler, png_uint_32 flags));
#endif
#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info,
- png_bytep row));
+ png_bytep row));
#endif
#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info,
- png_bytep row));
+ png_bytep row));
#endif
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info,
- png_bytep row));
+ png_bytep row));
#endif
#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info,
- png_bytep row));
+ png_bytep row));
#endif
#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
-PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info,
- png_bytep row, png_uint_32 flags));
+PNG_EXTERN void png_do_strip_channel PNGARG((png_row_infop row_info,
+ png_bytep row, int at_start));
#endif
+#ifdef PNG_16BIT_SUPPORTED
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row));
+PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info,
+ png_bytep row));
+#endif
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \
defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, png_bytep row));
+PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop
- row_info, png_bytep row));
+PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr,
+ png_row_infop row_info, png_bytep row));
#endif
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info,
- png_bytep row));
+ png_bytep row));
#endif
#ifdef PNG_READ_PACK_SUPPORTED
-PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info, png_bytep row));
+PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
#ifdef PNG_READ_SHIFT_SUPPORTED
-PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row,
- png_color_8p sig_bits));
+PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info,
+ png_bytep row, png_const_color_8p sig_bits));
#endif
#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
-PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row));
+PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
-#ifdef PNG_READ_16_TO_8_SUPPORTED
-PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row));
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+PNG_EXTERN void png_do_scale_16_to_8 PNGARG((png_row_infop row_info,
+ png_bytep row));
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
#ifdef PNG_READ_QUANTIZE_SUPPORTED
PNG_EXTERN void png_do_quantize PNGARG((png_row_infop row_info,
- png_bytep row, png_bytep palette_lookup, png_bytep quantize_lookup));
+ png_bytep row, png_const_bytep palette_lookup,
+ png_const_bytep quantize_lookup));
# ifdef PNG_CORRECT_PALETTE_SUPPORTED
PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr,
- png_colorp palette, int num_palette));
+ png_colorp palette, int num_palette));
# endif
#endif
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, png_bytep row));
+PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
#ifdef PNG_WRITE_PACK_SUPPORTED
@@ -618,35 +1088,37 @@
#endif
#ifdef PNG_WRITE_SHIFT_SUPPORTED
-PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row,
- png_color_8p bit_depth));
+PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info,
+ png_bytep row, png_const_color_8p bit_depth));
#endif
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
-#ifdef PNG_READ_GAMMA_SUPPORTED
-PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
- png_color_16p trans_color, png_color_16p background,
- png_color_16p background_1,
- png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,
- png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1,
- png_uint_16pp gamma_16_to_1, int gamma_shift));
-#else
-PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
- png_color_16p trans_color, png_color_16p background));
-#endif
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+PNG_EXTERN void png_do_compose PNGARG((png_row_infop row_info,
+ png_bytep row, png_structp png_ptr));
#endif
#ifdef PNG_READ_GAMMA_SUPPORTED
-PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row,
- png_bytep gamma_table, png_uint_16pp gamma_16_table,
- int gamma_shift));
+PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info,
+ png_bytep row, png_structp png_ptr));
+#endif
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+PNG_EXTERN void png_do_encode_alpha PNGARG((png_row_infop row_info,
+ png_bytep row, png_structp png_ptr));
#endif
#ifdef PNG_READ_EXPAND_SUPPORTED
PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info,
- png_bytep row, png_colorp palette, png_bytep trans, int num_trans));
+ png_bytep row, png_const_colorp palette, png_const_bytep trans,
+ int num_trans));
PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info,
- png_bytep row, png_color_16p trans_value));
+ png_bytep row, png_const_color_16p trans_color));
+#endif
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+PNG_EXTERN void png_do_expand_16 PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
/* The following decodes the appropriate chunks, and does error correction,
@@ -655,124 +1127,142 @@
/* Decode the IHDR chunk */
PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#ifdef PNG_READ_bKGD_SUPPORTED
PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_cHRM_SUPPORTED
PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_hIST_SUPPORTED
PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_iCCP_SUPPORTED
PNG_EXTERN void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif /* PNG_READ_iCCP_SUPPORTED */
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_oFFs_SUPPORTED
PNG_EXTERN void png_handle_oFFs PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_pCAL_SUPPORTED
PNG_EXTERN void png_handle_pCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_pHYs_SUPPORTED
PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_sBIT_SUPPORTED
PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_sCAL_SUPPORTED
PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_sPLT_SUPPORTED
PNG_EXTERN void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif /* PNG_READ_sPLT_SUPPORTED */
#ifdef PNG_READ_sRGB_SUPPORTED
PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_tIME_SUPPORTED
PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_tRNS_SUPPORTED
PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ png_uint_32 length));
#endif
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 length));
+ png_infop info_ptr, png_uint_32 length));
+#endif
PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr,
- png_bytep chunk_name));
+ png_uint_32 chunk_name));
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+/* Exactly as png_handle_as_unknown() except that the argument is a 32-bit chunk
+ * name, not a string.
+ */
+PNG_EXTERN int png_chunk_unknown_handling PNGARG((png_structp png_ptr,
+ png_uint_32 chunk_name));
+#endif
/* Handle the transformations for reading and writing */
-PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr));
-PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr));
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr,
+ png_row_infop row_info));
+#endif
+#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
+PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr,
+ png_row_infop row_info));
+#endif
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
PNG_EXTERN void png_init_read_transformations PNGARG((png_structp png_ptr));
+#endif
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
PNG_EXTERN void png_push_read_chunk PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ png_infop info_ptr));
PNG_EXTERN void png_push_read_sig PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ png_infop info_ptr));
PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr));
PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr,
- png_uint_32 length));
+ png_uint_32 length));
PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr));
PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr));
PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr,
- png_bytep buffer, png_size_t buffer_length));
+ png_bytep buffer, png_size_t buffer_length));
PNG_EXTERN void png_push_read_IDAT PNGARG((png_structp png_ptr));
PNG_EXTERN void png_process_IDAT_data PNGARG((png_structp png_ptr,
- png_bytep buffer, png_size_t buffer_length));
+ png_bytep buffer, png_size_t buffer_length));
PNG_EXTERN void png_push_process_row PNGARG((png_structp png_ptr));
PNG_EXTERN void png_push_handle_unknown PNGARG((png_structp png_ptr,
png_infop info_ptr, png_uint_32 length));
@@ -782,185 +1272,358 @@
png_infop info_ptr));
PNG_EXTERN void png_push_have_row PNGARG((png_structp png_ptr, png_bytep row));
PNG_EXTERN void png_push_read_end PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ png_infop info_ptr));
PNG_EXTERN void png_process_some_data PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ png_infop info_ptr));
PNG_EXTERN void png_read_push_finish_row PNGARG((png_structp png_ptr));
-#ifdef PNG_READ_tEXt_SUPPORTED
+# ifdef PNG_READ_tEXt_SUPPORTED
PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 length));
+ png_infop info_ptr, png_uint_32 length));
PNG_EXTERN void png_push_read_tEXt PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-#endif
-#ifdef PNG_READ_zTXt_SUPPORTED
+ png_infop info_ptr));
+# endif
+# ifdef PNG_READ_zTXt_SUPPORTED
PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 length));
+ png_infop info_ptr, png_uint_32 length));
PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-#endif
-#ifdef PNG_READ_iTXt_SUPPORTED
+ png_infop info_ptr));
+# endif
+# ifdef PNG_READ_iTXt_SUPPORTED
PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 length));
+ png_infop info_ptr, png_uint_32 length));
PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-#endif
+ png_infop info_ptr));
+# endif
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#ifdef PNG_MNG_FEATURES_SUPPORTED
PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info,
- png_bytep row));
+ png_bytep row));
PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
- png_bytep row));
+ png_bytep row));
#endif
/* Added at libpng version 1.4.0 */
-#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_CHECK_cHRM_SUPPORTED
PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structp png_ptr,
- png_fixed_point int_white_x, png_fixed_point int_white_y,
- png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
- int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
- png_fixed_point int_blue_y));
+ png_fixed_point int_white_x, png_fixed_point int_white_y,
+ png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
+ int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
+ png_fixed_point int_blue_y));
+#endif
+
+#ifdef PNG_CHECK_cHRM_SUPPORTED
+/* Added at libpng version 1.2.34 and 1.4.0 */
+/* Currently only used by png_check_cHRM_fixed */
+PNG_EXTERN void png_64bit_product PNGARG((long v1, long v2,
+ unsigned long *hi_product, unsigned long *lo_product));
#endif
#ifdef PNG_cHRM_SUPPORTED
-#ifdef PNG_CHECK_cHRM_SUPPORTED
-/* Added at libpng version 1.2.34 and 1.4.0 */
-PNG_EXTERN void png_64bit_product PNGARG((long v1, long v2,
- unsigned long *hi_product, unsigned long *lo_product));
-#endif
+/* Added at libpng version 1.5.5 */
+typedef struct png_xy
+{
+ png_fixed_point redx, redy;
+ png_fixed_point greenx, greeny;
+ png_fixed_point bluex, bluey;
+ png_fixed_point whitex, whitey;
+} png_xy;
+
+typedef struct png_XYZ
+{
+ png_fixed_point redX, redY, redZ;
+ png_fixed_point greenX, greenY, greenZ;
+ png_fixed_point blueX, blueY, blueZ;
+} png_XYZ;
+
+/* The conversion APIs return 0 on success, non-zero on a parameter error. They
+ * allow conversion between the above representations of a color encoding. When
+ * converting from XYZ end points to chromaticities the absolute magnitude of
+ * the end points is lost, when converting back the sum of the Y values of the
+ * three end points will be 1.0
+ */
+PNG_EXTERN int png_xy_from_XYZ PNGARG((png_xy *xy, png_XYZ XYZ));
+PNG_EXTERN int png_XYZ_from_xy PNGARG((png_XYZ *XYZ, png_xy xy));
+PNG_EXTERN int png_XYZ_from_xy_checked PNGARG((png_structp png_ptr,
+ png_XYZ *XYZ, png_xy xy));
#endif
/* Added at libpng version 1.4.0 */
PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr,
- png_uint_32 width, png_uint_32 height, int bit_depth,
- int color_type, int interlace_type, int compression_type,
- int filter_type));
+ png_uint_32 width, png_uint_32 height, int bit_depth,
+ int color_type, int interlace_type, int compression_type,
+ int filter_type));
/* Free all memory used by the read (old method - NOT DLL EXPORTED) */
-PNG_EXTERN void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_infop end_info_ptr));
+PNG_EXTERN void png_read_destroy PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_infop end_info_ptr));
/* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */
PNG_EXTERN void png_write_destroy PNGARG((png_structp png_ptr));
#ifdef USE_FAR_KEYWORD /* memory model conversion function */
-PNG_EXTERN void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr,
- int check));
+PNG_EXTERN void *png_far_to_near PNGARG((png_structp png_ptr, png_voidp ptr,
+ int check));
#endif /* USE_FAR_KEYWORD */
-/* Define PNG_DEBUG at compile time for debugging information. Higher
- * numbers for PNG_DEBUG mean more debugging information. This has
- * only been added since version 0.95 so it is not implemented throughout
- * libpng yet, but more support will be added as needed.
- */
-#ifdef PNG_DEBUG
-#if (PNG_DEBUG > 0)
-#if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
-#include <crtdbg.h>
-#if (PNG_DEBUG > 1)
-#ifndef _DEBUG
-# define _DEBUG
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)
+PNG_EXTERN PNG_FUNCTION(void, png_fixed_error, (png_structp png_ptr,
+ png_const_charp name),PNG_NORETURN);
#endif
-#ifndef png_debug
-#define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
-#endif
-#ifndef png_debug1
-#define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
-#endif
-#ifndef png_debug2
-#define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
-#endif
-#endif
-#else /* PNG_DEBUG_FILE || !_MSC_VER */
-#ifndef PNG_DEBUG_FILE
-#define PNG_DEBUG_FILE stderr
-#endif /* PNG_DEBUG_FILE */
-#if (PNG_DEBUG > 1)
-/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
- * non-ISO compilers
+/* Puts 'string' into 'buffer' at buffer[pos], taking care never to overwrite
+ * the end. Always leaves the buffer nul terminated. Never errors out (and
+ * there is no error code.)
*/
-# ifdef __STDC__
-# ifndef png_debug
-# define png_debug(l,m) \
- { \
- int num_tabs=l; \
- fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
- }
-# endif
-# ifndef png_debug1
-# define png_debug1(l,m,p1) \
- { \
- int num_tabs=l; \
- fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
- }
-# endif
-# ifndef png_debug2
-# define png_debug2(l,m,p1,p2) \
- { \
- int num_tabs=l; \
- fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
- }
-# endif
-# else /* __STDC __ */
-# ifndef png_debug
-# define png_debug(l,m) \
- { \
- int num_tabs=l; \
- char format[256]; \
- snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
- m,PNG_STRING_NEWLINE); \
- fprintf(PNG_DEBUG_FILE,format); \
- }
-# endif
-# ifndef png_debug1
-# define png_debug1(l,m,p1) \
- { \
- int num_tabs=l; \
- char format[256]; \
- snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
- m,PNG_STRING_NEWLINE); \
- fprintf(PNG_DEBUG_FILE,format,p1); \
- }
-# endif
-# ifndef png_debug2
-# define png_debug2(l,m,p1,p2) \
- { \
- int num_tabs=l; \
- char format[256]; \
- snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
- m,PNG_STRING_NEWLINE); \
- fprintf(PNG_DEBUG_FILE,format,p1,p2); \
- }
-# endif
-# endif /* __STDC __ */
-#endif /* (PNG_DEBUG > 1) */
+PNG_EXTERN size_t png_safecat(png_charp buffer, size_t bufsize, size_t pos,
+ png_const_charp string);
-#endif /* _MSC_VER */
-#endif /* (PNG_DEBUG > 0) */
-#endif /* PNG_DEBUG */
-#ifndef png_debug
-#define png_debug(l, m)
+/* Various internal functions to handle formatted warning messages, currently
+ * only implemented for warnings.
+ */
+#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_TIME_RFC1123_SUPPORTED)
+/* Utility to dump an unsigned value into a buffer, given a start pointer and
+ * and end pointer (which should point just *beyond* the end of the buffer!)
+ * Returns the pointer to the start of the formatted string. This utility only
+ * does unsigned values.
+ */
+PNG_EXTERN png_charp png_format_number(png_const_charp start, png_charp end,
+ int format, png_alloc_size_t number);
+
+/* Convenience macro that takes an array: */
+#define PNG_FORMAT_NUMBER(buffer,format,number) \
+ png_format_number(buffer, buffer + (sizeof buffer), format, number)
+
+/* Suggested size for a number buffer (enough for 64 bits and a sign!) */
+#define PNG_NUMBER_BUFFER_SIZE 24
+
+/* These are the integer formats currently supported, the name is formed from
+ * the standard printf(3) format string.
+ */
+#define PNG_NUMBER_FORMAT_u 1 /* chose unsigned API! */
+#define PNG_NUMBER_FORMAT_02u 2
+#define PNG_NUMBER_FORMAT_d 1 /* chose signed API! */
+#define PNG_NUMBER_FORMAT_02d 2
+#define PNG_NUMBER_FORMAT_x 3
+#define PNG_NUMBER_FORMAT_02x 4
+#define PNG_NUMBER_FORMAT_fixed 5 /* choose the signed API */
#endif
-#ifndef png_debug1
-#define png_debug1(l, m, p1)
+
+#ifdef PNG_WARNINGS_SUPPORTED
+/* New defines and members adding in libpng-1.5.4 */
+# define PNG_WARNING_PARAMETER_SIZE 32
+# define PNG_WARNING_PARAMETER_COUNT 8
+
+/* An l-value of this type has to be passed to the APIs below to cache the
+ * values of the parameters to a formatted warning message.
+ */
+typedef char png_warning_parameters[PNG_WARNING_PARAMETER_COUNT][
+ PNG_WARNING_PARAMETER_SIZE];
+
+PNG_EXTERN void png_warning_parameter(png_warning_parameters p, int number,
+ png_const_charp string);
+ /* Parameters are limited in size to PNG_WARNING_PARAMETER_SIZE characters,
+ * including the trailing '\0'.
+ */
+PNG_EXTERN void png_warning_parameter_unsigned(png_warning_parameters p,
+ int number, int format, png_alloc_size_t value);
+ /* Use png_alloc_size_t because it is an unsigned type as big as any we
+ * need to output. Use the following for a signed value.
+ */
+PNG_EXTERN void png_warning_parameter_signed(png_warning_parameters p,
+ int number, int format, png_int_32 value);
+
+PNG_EXTERN void png_formatted_warning(png_structp png_ptr,
+ png_warning_parameters p, png_const_charp message);
+ /* 'message' follows the X/Open approach of using @1, @2 to insert
+ * parameters previously supplied using the above functions. Errors in
+ * specifying the paramters will simple result in garbage substitutions.
+ */
#endif
-#ifndef png_debug2
-#define png_debug2(l, m, p1, p2)
+
+/* ASCII to FP interfaces, currently only implemented if sCAL
+ * support is required.
+ */
+#if defined(PNG_READ_sCAL_SUPPORTED)
+/* MAX_DIGITS is actually the maximum number of characters in an sCAL
+ * width or height, derived from the precision (number of significant
+ * digits - a build time settable option) and assumpitions about the
+ * maximum ridiculous exponent.
+ */
+#define PNG_sCAL_MAX_DIGITS (PNG_sCAL_PRECISION+1/*.*/+1/*E*/+10/*exponent*/)
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+PNG_EXTERN void png_ascii_from_fp PNGARG((png_structp png_ptr, png_charp ascii,
+ png_size_t size, double fp, unsigned int precision));
+#endif /* FLOATING_POINT */
+
+#ifdef PNG_FIXED_POINT_SUPPORTED
+PNG_EXTERN void png_ascii_from_fixed PNGARG((png_structp png_ptr,
+ png_charp ascii, png_size_t size, png_fixed_point fp));
+#endif /* FIXED_POINT */
+#endif /* READ_sCAL */
+
+#if defined(PNG_sCAL_SUPPORTED) || defined(PNG_pCAL_SUPPORTED)
+/* An internal API to validate the format of a floating point number.
+ * The result is the index of the next character. If the number is
+ * not valid it will be the index of a character in the supposed number.
+ *
+ * The format of a number is defined in the PNG extensions specification
+ * and this API is strictly conformant to that spec, not anyone elses!
+ *
+ * The format as a regular expression is:
+ *
+ * [+-]?[0-9]+.?([Ee][+-]?[0-9]+)?
+ *
+ * or:
+ *
+ * [+-]?.[0-9]+(.[0-9]+)?([Ee][+-]?[0-9]+)?
+ *
+ * The complexity is that either integer or fraction must be present and the
+ * fraction is permitted to have no digits only if the integer is present.
+ *
+ * NOTE: The dangling E problem.
+ * There is a PNG valid floating point number in the following:
+ *
+ * PNG floating point numb1.ers are not greedy.
+ *
+ * Working this out requires *TWO* character lookahead (because of the
+ * sign), the parser does not do this - it will fail at the 'r' - this
+ * doesn't matter for PNG sCAL chunk values, but it requires more care
+ * if the value were ever to be embedded in something more complex. Use
+ * ANSI-C strtod if you need the lookahead.
+ */
+/* State table for the parser. */
+#define PNG_FP_INTEGER 0 /* before or in integer */
+#define PNG_FP_FRACTION 1 /* before or in fraction */
+#define PNG_FP_EXPONENT 2 /* before or in exponent */
+#define PNG_FP_STATE 3 /* mask for the above */
+#define PNG_FP_SAW_SIGN 4 /* Saw +/- in current state */
+#define PNG_FP_SAW_DIGIT 8 /* Saw a digit in current state */
+#define PNG_FP_SAW_DOT 16 /* Saw a dot in current state */
+#define PNG_FP_SAW_E 32 /* Saw an E (or e) in current state */
+#define PNG_FP_SAW_ANY 60 /* Saw any of the above 4 */
+
+/* These three values don't affect the parser. They are set but not used.
+ */
+#define PNG_FP_WAS_VALID 64 /* Preceding substring is a valid fp number */
+#define PNG_FP_NEGATIVE 128 /* A negative number, including "-0" */
+#define PNG_FP_NONZERO 256 /* A non-zero value */
+#define PNG_FP_STICKY 448 /* The above three flags */
+
+/* This is available for the caller to store in 'state' if required. Do not
+ * call the parser after setting it (the parser sometimes clears it.)
+ */
+#define PNG_FP_INVALID 512 /* Available for callers as a distinct value */
+
+/* Result codes for the parser (boolean - true meants ok, false means
+ * not ok yet.)
+ */
+#define PNG_FP_MAYBE 0 /* The number may be valid in the future */
+#define PNG_FP_OK 1 /* The number is valid */
+
+/* Tests on the sticky non-zero and negative flags. To pass these checks
+ * the state must also indicate that the whole number is valid - this is
+ * achieved by testing PNG_FP_SAW_DIGIT (see the implementation for why this
+ * is equivalent to PNG_FP_OK above.)
+ */
+#define PNG_FP_NZ_MASK (PNG_FP_SAW_DIGIT | PNG_FP_NEGATIVE | PNG_FP_NONZERO)
+ /* NZ_MASK: the string is valid and a non-zero negative value */
+#define PNG_FP_Z_MASK (PNG_FP_SAW_DIGIT | PNG_FP_NONZERO)
+ /* Z MASK: the string is valid and a non-zero value. */
+ /* PNG_FP_SAW_DIGIT: the string is valid. */
+#define PNG_FP_IS_ZERO(state) (((state) & PNG_FP_Z_MASK) == PNG_FP_SAW_DIGIT)
+#define PNG_FP_IS_POSITIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_Z_MASK)
+#define PNG_FP_IS_NEGATIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_NZ_MASK)
+
+/* The actual parser. This can be called repeatedly, it updates
+ * the index into the string and the state variable (which must
+ * be initialzed to 0). It returns a result code, as above. There
+ * is no point calling the parser any more if it fails to advance to
+ * the end of the string - it is stuck on an invalid character (or
+ * terminated by '\0').
+ *
+ * Note that the pointer will consume an E or even an E+ then leave
+ * a 'maybe' state even though a preceding integer.fraction is valid.
+ * The PNG_FP_WAS_VALID flag indicates that a preceding substring was
+ * a valid number. It's possible to recover from this by calling
+ * the parser again (from the start, with state 0) but with a string
+ * that omits the last character (i.e. set the size to the index of
+ * the problem character.) This has not been tested within libpng.
+ */
+PNG_EXTERN int png_check_fp_number PNGARG((png_const_charp string,
+ png_size_t size, int *statep, png_size_tp whereami));
+
+/* This is the same but it checks a complete string and returns true
+ * only if it just contains a floating point number. As of 1.5.4 this
+ * function also returns the state at the end of parsing the number if
+ * it was valid (otherwise it returns 0.) This can be used for testing
+ * for negative or zero values using the sticky flag.
+ */
+PNG_EXTERN int png_check_fp_string PNGARG((png_const_charp string,
+ png_size_t size));
+#endif /* pCAL || sCAL */
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) ||\
+ defined(PNG_INCH_CONVERSIONS_SUPPORTED) || defined(PNG_READ_pHYs_SUPPORTED)
+/* Added at libpng version 1.5.0 */
+/* This is a utility to provide a*times/div (rounded) and indicate
+ * if there is an overflow. The result is a boolean - false (0)
+ * for overflow, true (1) if no overflow, in which case *res
+ * holds the result.
+ */
+PNG_EXTERN int png_muldiv PNGARG((png_fixed_point_p res, png_fixed_point a,
+ png_int_32 multiplied_by, png_int_32 divided_by));
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED)
+/* Same deal, but issue a warning on overflow and return 0. */
+PNG_EXTERN png_fixed_point png_muldiv_warn PNGARG((png_structp png_ptr,
+ png_fixed_point a, png_int_32 multiplied_by, png_int_32 divided_by));
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* Calculate a reciprocal - used for gamma values. This returns
+ * 0 if the argument is 0 in order to maintain an undefined value,
+ * there are no warnings.
+ */
+PNG_EXTERN png_fixed_point png_reciprocal PNGARG((png_fixed_point a));
+
+/* The same but gives a reciprocal of the product of two fixed point
+ * values. Accuracy is suitable for gamma calculations but this is
+ * not exact - use png_muldiv for that.
+ */
+PNG_EXTERN png_fixed_point png_reciprocal2 PNGARG((png_fixed_point a,
+ png_fixed_point b));
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* Internal fixed point gamma correction. These APIs are called as
+ * required to convert single values - they don't need to be fast,
+ * they are not used when processing image pixel values.
+ *
+ * While the input is an 'unsigned' value it must actually be the
+ * correct bit value - 0..255 or 0..65535 as required.
+ */
+PNG_EXTERN png_uint_16 png_gamma_correct PNGARG((png_structp png_ptr,
+ unsigned int value, png_fixed_point gamma_value));
+PNG_EXTERN int png_gamma_significant PNGARG((png_fixed_point gamma_value));
+PNG_EXTERN png_uint_16 png_gamma_16bit_correct PNGARG((unsigned int value,
+ png_fixed_point gamma_value));
+PNG_EXTERN png_byte png_gamma_8bit_correct PNGARG((unsigned int value,
+ png_fixed_point gamma_value));
+PNG_EXTERN void png_destroy_gamma_table(png_structp png_ptr);
+PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr,
+ int bit_depth));
#endif
/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
+#include "pngdebug.h"
+
#ifdef __cplusplus
}
#endif
-#endif /* PNG_VERSION_INFO_ONLY */
#endif /* PNGPRIV_H */
diff --git a/pngread.c b/pngread.c
index 7d6b76a..59789ea 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
- * Last changed in libpng 1.4.6 [March 8, 2011]
+ * Last changed in libpng 1.5.7 [December 15, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -14,30 +14,28 @@
* read a PNG file or stream.
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#ifdef PNG_READ_SUPPORTED
#include "pngpriv.h"
+#ifdef PNG_READ_SUPPORTED
/* Create a PNG structure for reading, and allocate any memory needed. */
-png_structp PNGAPI
-png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn)
+PNG_FUNCTION(png_structp,PNGAPI
+png_create_read_struct,(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn),PNG_ALLOCATED)
{
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_read_struct_2(user_png_ver, error_ptr, error_fn,
- warn_fn, NULL, NULL, NULL));
+ warn_fn, NULL, NULL, NULL));
}
/* Alternate create PNG structure for reading, and allocate any memory
* needed.
*/
-png_structp PNGAPI
-png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
- png_malloc_ptr malloc_fn, png_free_ptr free_fn)
+PNG_FUNCTION(png_structp,PNGAPI
+png_create_read_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED)
{
#endif /* PNG_USER_MEM_SUPPORTED */
@@ -49,17 +47,15 @@
#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
- jmp_buf jmpbuf;
+ jmp_buf tmp_jmpbuf;
#endif
#endif
- int i;
-
png_debug(1, "in png_create_read_struct");
#ifdef PNG_USER_MEM_SUPPORTED
png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
- malloc_fn, mem_ptr);
+ malloc_fn, mem_ptr);
#else
png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
#endif
@@ -70,28 +66,27 @@
#ifdef PNG_USER_LIMITS_SUPPORTED
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
-# ifdef PNG_USER_CHUNK_CACHE_MAX
+
/* Added at libpng-1.2.43 and 1.4.0 */
png_ptr->user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
-# endif
-# ifdef PNG_SET_USER_CHUNK_MALLOC_MAX
+
/* Added at libpng-1.2.43 and 1.4.1 */
png_ptr->user_chunk_malloc_max = PNG_USER_CHUNK_MALLOC_MAX;
-# endif
#endif
#ifdef PNG_SETJMP_SUPPORTED
/* Applications that neglect to set up their own setjmp() and then
- encounter a png_error() will longjmp here. Since the jmpbuf is
- then meaningless we abort instead of returning. */
+ * encounter a png_error() will longjmp here. Since the jmpbuf is
+ * then meaningless we abort instead of returning.
+ */
#ifdef USE_FAR_KEYWORD
- if (setjmp(jmpbuf))
+ if (setjmp(tmp_jmpbuf))
#else
if (setjmp(png_jmpbuf(png_ptr))) /* Sets longjmp to match setjmp */
#endif
PNG_ABORT();
#ifdef USE_FAR_KEYWORD
- png_memcpy(png_jmpbuf(png_ptr), jmpbuf, png_sizeof(jmp_buf));
+ png_memcpy(png_jmpbuf(png_ptr), tmp_jmpbuf, png_sizeof(jmp_buf));
#endif
#endif /* PNG_SETJMP_SUPPORTED */
@@ -101,63 +96,20 @@
png_set_error_fn(png_ptr, error_ptr, error_fn, warn_fn);
- if (user_png_ver)
- {
- i = 0;
- do
- {
- if (user_png_ver[i] != png_libpng_ver[i])
- png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
- } while (png_libpng_ver[i++]);
- }
- else
- png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
-
-
- if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
- {
- /* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
- * we must recompile any applications that use any older library version.
- * For versions after libpng 1.0, we will be compatible, so we need
- * only check the first digit.
- */
- if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
- (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
- (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
- {
-#ifdef PNG_STDIO_SUPPORTED
- char msg[80];
- if (user_png_ver)
- {
- png_snprintf(msg, 80,
- "Application was compiled with png.h from libpng-%.20s",
- user_png_ver);
- png_warning(png_ptr, msg);
- }
- png_snprintf(msg, 80,
- "Application is running with png.c from libpng-%.20s",
- png_libpng_ver);
- png_warning(png_ptr, msg);
-#endif
-#ifdef PNG_ERROR_NUMBERS_SUPPORTED
- png_ptr->flags = 0;
-#endif
- png_warning(png_ptr,
- "Incompatible libpng version in application and library");
-
- png_cleanup_needed = 1;
- }
- }
+ /* Call the general version checker (shared with read and write code): */
+ if (!png_user_version_check(png_ptr, user_png_ver))
+ png_cleanup_needed = 1;
if (!png_cleanup_needed)
{
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
- png_ptr->zbuf = (png_bytep)png_malloc_warn(png_ptr,
- png_ptr->zbuf_size);
+ png_ptr->zbuf = (png_bytep)png_malloc_warn(png_ptr, png_ptr->zbuf_size);
+
if (png_ptr->zbuf == NULL)
- png_cleanup_needed = 1;
+ png_cleanup_needed = 1;
}
+
png_ptr->zstream.zalloc = png_zalloc;
png_ptr->zstream.zfree = png_zfree;
png_ptr->zstream.opaque = (voidpf)png_ptr;
@@ -166,12 +118,24 @@
{
switch (inflateInit(&png_ptr->zstream))
{
- case Z_OK: /* Do nothing */ break;
+ case Z_OK:
+ break; /* Do nothing */
+
case Z_MEM_ERROR:
- case Z_STREAM_ERROR: png_warning(png_ptr, "zlib memory error");
- png_cleanup_needed = 1; break;
- case Z_VERSION_ERROR: png_warning(png_ptr, "zlib version error");
- png_cleanup_needed = 1; break;
+ png_warning(png_ptr, "zlib memory error");
+ png_cleanup_needed = 1;
+ break;
+
+ case Z_STREAM_ERROR:
+ png_warning(png_ptr, "zlib stream error");
+ png_cleanup_needed = 1;
+ break;
+
+ case Z_VERSION_ERROR:
+ png_warning(png_ptr, "zlib version error");
+ png_cleanup_needed = 1;
+ break;
+
default: png_warning(png_ptr, "Unknown zlib error");
png_cleanup_needed = 1;
}
@@ -184,7 +148,7 @@
png_ptr->zbuf = NULL;
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)png_ptr,
- (png_free_ptr)free_fn, (png_voidp)mem_ptr);
+ (png_free_ptr)free_fn, (png_voidp)mem_ptr);
#else
png_destroy_struct((png_voidp)png_ptr);
#endif
@@ -223,176 +187,149 @@
for (;;)
{
- PNG_IHDR;
- PNG_IDAT;
- PNG_IEND;
- PNG_PLTE;
-#ifdef PNG_READ_bKGD_SUPPORTED
- PNG_bKGD;
-#endif
-#ifdef PNG_READ_cHRM_SUPPORTED
- PNG_cHRM;
-#endif
-#ifdef PNG_READ_gAMA_SUPPORTED
- PNG_gAMA;
-#endif
-#ifdef PNG_READ_hIST_SUPPORTED
- PNG_hIST;
-#endif
-#ifdef PNG_READ_iCCP_SUPPORTED
- PNG_iCCP;
-#endif
-#ifdef PNG_READ_iTXt_SUPPORTED
- PNG_iTXt;
-#endif
-#ifdef PNG_READ_oFFs_SUPPORTED
- PNG_oFFs;
-#endif
-#ifdef PNG_READ_pCAL_SUPPORTED
- PNG_pCAL;
-#endif
-#ifdef PNG_READ_pHYs_SUPPORTED
- PNG_pHYs;
-#endif
-#ifdef PNG_READ_sBIT_SUPPORTED
- PNG_sBIT;
-#endif
-#ifdef PNG_READ_sCAL_SUPPORTED
- PNG_sCAL;
-#endif
-#ifdef PNG_READ_sPLT_SUPPORTED
- PNG_sPLT;
-#endif
-#ifdef PNG_READ_sRGB_SUPPORTED
- PNG_sRGB;
-#endif
-#ifdef PNG_READ_tEXt_SUPPORTED
- PNG_tEXt;
-#endif
-#ifdef PNG_READ_tIME_SUPPORTED
- PNG_tIME;
-#endif
-#ifdef PNG_READ_tRNS_SUPPORTED
- PNG_tRNS;
-#endif
-#ifdef PNG_READ_zTXt_SUPPORTED
- PNG_zTXt;
-#endif
png_uint_32 length = png_read_chunk_header(png_ptr);
- PNG_CONST png_bytep chunk_name = png_ptr->chunk_name;
+ png_uint_32 chunk_name = png_ptr->chunk_name;
/* This should be a binary subdivision search or a hash for
* matching the chunk name rather than a linear search.
*/
- if (!png_memcmp(chunk_name, png_IDAT, 4))
- if (png_ptr->mode & PNG_AFTER_IDAT)
- png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
+ if (chunk_name == png_IDAT)
+ if (png_ptr->mode & PNG_AFTER_IDAT)
+ png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
- if (!png_memcmp(chunk_name, png_IHDR, 4))
+ if (chunk_name == png_IHDR)
png_handle_IHDR(png_ptr, info_ptr, length);
- else if (!png_memcmp(chunk_name, png_IEND, 4))
+
+ else if (chunk_name == png_IEND)
png_handle_IEND(png_ptr, info_ptr, length);
+
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- else if (png_handle_as_unknown(png_ptr, chunk_name))
+ else if (png_chunk_unknown_handling(png_ptr, chunk_name) !=
+ PNG_HANDLE_CHUNK_AS_DEFAULT)
{
- if (!png_memcmp(chunk_name, png_IDAT, 4))
+ if (chunk_name == png_IDAT)
png_ptr->mode |= PNG_HAVE_IDAT;
+
png_handle_unknown(png_ptr, info_ptr, length);
- if (!png_memcmp(chunk_name, png_PLTE, 4))
+
+ if (chunk_name == png_PLTE)
png_ptr->mode |= PNG_HAVE_PLTE;
- else if (!png_memcmp(chunk_name, png_IDAT, 4))
+
+ else if (chunk_name == png_IDAT)
{
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before IDAT");
+
else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
- !(png_ptr->mode & PNG_HAVE_PLTE))
+ !(png_ptr->mode & PNG_HAVE_PLTE))
png_error(png_ptr, "Missing PLTE before IDAT");
+
break;
}
}
#endif
- else if (!png_memcmp(chunk_name, png_PLTE, 4))
+ else if (chunk_name == png_PLTE)
png_handle_PLTE(png_ptr, info_ptr, length);
- else if (!png_memcmp(chunk_name, png_IDAT, 4))
+
+ else if (chunk_name == png_IDAT)
{
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before IDAT");
+
else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
- !(png_ptr->mode & PNG_HAVE_PLTE))
+ !(png_ptr->mode & PNG_HAVE_PLTE))
png_error(png_ptr, "Missing PLTE before IDAT");
png_ptr->idat_size = length;
png_ptr->mode |= PNG_HAVE_IDAT;
break;
}
+
#ifdef PNG_READ_bKGD_SUPPORTED
- else if (!png_memcmp(chunk_name, png_bKGD, 4))
+ else if (chunk_name == png_bKGD)
png_handle_bKGD(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_cHRM_SUPPORTED
- else if (!png_memcmp(chunk_name, png_cHRM, 4))
+ else if (chunk_name == png_cHRM)
png_handle_cHRM(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_gAMA_SUPPORTED
- else if (!png_memcmp(chunk_name, png_gAMA, 4))
+ else if (chunk_name == png_gAMA)
png_handle_gAMA(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_hIST_SUPPORTED
- else if (!png_memcmp(chunk_name, png_hIST, 4))
+ else if (chunk_name == png_hIST)
png_handle_hIST(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_oFFs_SUPPORTED
- else if (!png_memcmp(chunk_name, png_oFFs, 4))
+ else if (chunk_name == png_oFFs)
png_handle_oFFs(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_pCAL_SUPPORTED
- else if (!png_memcmp(chunk_name, png_pCAL, 4))
+ else if (chunk_name == png_pCAL)
png_handle_pCAL(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_sCAL_SUPPORTED
- else if (!png_memcmp(chunk_name, png_sCAL, 4))
+ else if (chunk_name == png_sCAL)
png_handle_sCAL(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_pHYs_SUPPORTED
- else if (!png_memcmp(chunk_name, png_pHYs, 4))
+ else if (chunk_name == png_pHYs)
png_handle_pHYs(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_sBIT_SUPPORTED
- else if (!png_memcmp(chunk_name, png_sBIT, 4))
+ else if (chunk_name == png_sBIT)
png_handle_sBIT(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_sRGB_SUPPORTED
- else if (!png_memcmp(chunk_name, png_sRGB, 4))
+ else if (chunk_name == png_sRGB)
png_handle_sRGB(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_iCCP_SUPPORTED
- else if (!png_memcmp(chunk_name, png_iCCP, 4))
+ else if (chunk_name == png_iCCP)
png_handle_iCCP(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_sPLT_SUPPORTED
- else if (!png_memcmp(chunk_name, png_sPLT, 4))
+ else if (chunk_name == png_sPLT)
png_handle_sPLT(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_tEXt_SUPPORTED
- else if (!png_memcmp(chunk_name, png_tEXt, 4))
+ else if (chunk_name == png_tEXt)
png_handle_tEXt(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_tIME_SUPPORTED
- else if (!png_memcmp(chunk_name, png_tIME, 4))
+ else if (chunk_name == png_tIME)
png_handle_tIME(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_tRNS_SUPPORTED
- else if (!png_memcmp(chunk_name, png_tRNS, 4))
+ else if (chunk_name == png_tRNS)
png_handle_tRNS(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_zTXt_SUPPORTED
- else if (!png_memcmp(chunk_name, png_zTXt, 4))
+ else if (chunk_name == png_zTXt)
png_handle_zTXt(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_iTXt_SUPPORTED
- else if (!png_memcmp(chunk_name, png_iTXt, 4))
+ else if (chunk_name == png_iTXt)
png_handle_iTXt(png_ptr, info_ptr, length);
#endif
+
else
png_handle_unknown(png_ptr, info_ptr, length);
}
@@ -407,13 +344,14 @@
if (png_ptr == NULL)
return;
- if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
- png_read_start_row(png_ptr);
- else
- png_warning(png_ptr,
- "Ignoring extra png_read_update_info() call; row buffer not reallocated");
+ png_read_start_row(png_ptr);
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
png_read_transform_info(png_ptr, info_ptr);
+#else
+ PNG_UNUSED(info_ptr)
+#endif
}
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
@@ -427,10 +365,8 @@
{
png_debug(1, "in png_start_read_image");
- if (png_ptr == NULL)
- return;
- if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
- png_read_start_row(png_ptr);
+ if (png_ptr != NULL)
+ png_read_start_row(png_ptr);
}
#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
@@ -438,22 +374,30 @@
void PNGAPI
png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
{
- PNG_IDAT;
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- PNG_CONST int png_pass_dsp_mask[7] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55,
- 0xff};
- PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
int ret;
-#endif
+
+ png_row_info row_info;
if (png_ptr == NULL)
return;
png_debug2(1, "in png_read_row (row %lu, pass %d)",
- (unsigned long) png_ptr->row_number, png_ptr->pass);
+ (unsigned long)png_ptr->row_number, png_ptr->pass);
+ /* png_read_start_row sets the information (in particular iwidth) for this
+ * interlace pass.
+ */
if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
png_read_start_row(png_ptr);
+
+ /* 1.5.6: row_info moved out of png_struct to a local here. */
+ row_info.width = png_ptr->iwidth; /* NOTE: width of current interlaced row */
+ row_info.color_type = png_ptr->color_type;
+ row_info.bit_depth = png_ptr->bit_depth;
+ row_info.channels = png_ptr->channels;
+ row_info.pixel_depth = png_ptr->pixel_depth;
+ row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width);
+
if (png_ptr->row_number == 0 && png_ptr->pass == 0)
{
/* Check for transforms that have been set but were defined out */
@@ -461,27 +405,33 @@
if (png_ptr->transformations & PNG_INVERT_MONO)
png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined");
#endif
+
#if defined(PNG_WRITE_FILLER_SUPPORTED) && !defined(PNG_READ_FILLER_SUPPORTED)
if (png_ptr->transformations & PNG_FILLER)
png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined");
#endif
+
#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \
!defined(PNG_READ_PACKSWAP_SUPPORTED)
if (png_ptr->transformations & PNG_PACKSWAP)
png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined");
#endif
+
#if defined(PNG_WRITE_PACK_SUPPORTED) && !defined(PNG_READ_PACK_SUPPORTED)
if (png_ptr->transformations & PNG_PACK)
png_warning(png_ptr, "PNG_READ_PACK_SUPPORTED is not defined");
#endif
+
#if defined(PNG_WRITE_SHIFT_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED)
if (png_ptr->transformations & PNG_SHIFT)
png_warning(png_ptr, "PNG_READ_SHIFT_SUPPORTED is not defined");
#endif
+
#if defined(PNG_WRITE_BGR_SUPPORTED) && !defined(PNG_READ_BGR_SUPPORTED)
if (png_ptr->transformations & PNG_BGR)
png_warning(png_ptr, "PNG_READ_BGR_SUPPORTED is not defined");
#endif
+
#if defined(PNG_WRITE_SWAP_SUPPORTED) && !defined(PNG_READ_SWAP_SUPPORTED)
if (png_ptr->transformations & PNG_SWAP_BYTES)
png_warning(png_ptr, "PNG_READ_SWAP_SUPPORTED is not defined");
@@ -489,7 +439,12 @@
}
#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* If interlaced and we do not need a new row, combine row and return */
+ /* If interlaced and we do not need a new row, combine row and return.
+ * Notice that the pixels we have from previous rows have been transformed
+ * already; we can only combine like with like (transformed or
+ * untransformed) and, because of the libpng API for interlaced images, this
+ * means we must transform before de-interlacing.
+ */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
switch (png_ptr->pass)
@@ -498,8 +453,7 @@
if (png_ptr->row_number & 0x07)
{
if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row,
- png_pass_dsp_mask[png_ptr->pass]);
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
png_read_finish_row(png_ptr);
return;
}
@@ -509,8 +463,8 @@
if ((png_ptr->row_number & 0x07) || png_ptr->width < 5)
{
if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row,
- png_pass_dsp_mask[png_ptr->pass]);
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
png_read_finish_row(png_ptr);
return;
}
@@ -520,8 +474,8 @@
if ((png_ptr->row_number & 0x07) != 4)
{
if (dsp_row != NULL && (png_ptr->row_number & 4))
- png_combine_row(png_ptr, dsp_row,
- png_pass_dsp_mask[png_ptr->pass]);
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
png_read_finish_row(png_ptr);
return;
}
@@ -531,8 +485,8 @@
if ((png_ptr->row_number & 3) || png_ptr->width < 3)
{
if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row,
- png_pass_dsp_mask[png_ptr->pass]);
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
png_read_finish_row(png_ptr);
return;
}
@@ -542,19 +496,18 @@
if ((png_ptr->row_number & 3) != 2)
{
if (dsp_row != NULL && (png_ptr->row_number & 2))
- png_combine_row(png_ptr, dsp_row,
- png_pass_dsp_mask[png_ptr->pass]);
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
png_read_finish_row(png_ptr);
return;
}
break;
-
case 5:
if ((png_ptr->row_number & 1) || png_ptr->width < 2)
{
if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row,
- png_pass_dsp_mask[png_ptr->pass]);
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
png_read_finish_row(png_ptr);
return;
}
@@ -579,6 +532,7 @@
png_ptr->zstream.avail_out =
(uInt)(PNG_ROWBYTES(png_ptr->pixel_depth,
png_ptr->iwidth) + 1);
+
do
{
if (!(png_ptr->zstream.avail_in))
@@ -588,7 +542,7 @@
png_crc_finish(png_ptr, 0);
png_ptr->idat_size = png_read_chunk_header(png_ptr);
- if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ if (png_ptr->chunk_name != png_IDAT)
png_error(png_ptr, "Not enough image data");
}
png_ptr->zstream.avail_in = (uInt)png_ptr->zbuf_size;
@@ -596,10 +550,12 @@
if (png_ptr->zbuf_size > png_ptr->idat_size)
png_ptr->zstream.avail_in = (uInt)png_ptr->idat_size;
png_crc_read(png_ptr, png_ptr->zbuf,
- (png_size_t)png_ptr->zstream.avail_in);
+ (png_size_t)png_ptr->zstream.avail_in);
png_ptr->idat_size -= png_ptr->zstream.avail_in;
}
+
ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
+
if (ret == Z_STREAM_END)
{
if (png_ptr->zstream.avail_out || png_ptr->zstream.avail_in ||
@@ -609,39 +565,54 @@
png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
break;
}
+
if (ret != Z_OK)
png_error(png_ptr, png_ptr->zstream.msg ? png_ptr->zstream.msg :
- "Decompression error");
+ "Decompression error");
} while (png_ptr->zstream.avail_out);
- png_ptr->row_info.color_type = png_ptr->color_type;
- png_ptr->row_info.width = png_ptr->iwidth;
- png_ptr->row_info.channels = png_ptr->channels;
- png_ptr->row_info.bit_depth = png_ptr->bit_depth;
- png_ptr->row_info.pixel_depth = png_ptr->pixel_depth;
- png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
- png_ptr->row_info.width);
+ if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE)
+ {
+ if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST)
+ png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,
+ png_ptr->prev_row + 1, png_ptr->row_buf[0]);
+ else
+ png_error(png_ptr, "bad adaptive filter value");
+ }
- if (png_ptr->row_buf[0])
- png_read_filter_row(png_ptr, &(png_ptr->row_info),
- png_ptr->row_buf + 1, png_ptr->prev_row + 1,
- (int)(png_ptr->row_buf[0]));
-
- png_memcpy(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1);
+ /* libpng 1.5.6: the following line was copying png_ptr->rowbytes before
+ * 1.5.6, while the buffer really is this big in current versions of libpng
+ * it may not be in the future, so this was changed just to copy the
+ * interlaced count:
+ */
+ png_memcpy(png_ptr->prev_row, png_ptr->row_buf, row_info.rowbytes + 1);
#ifdef PNG_MNG_FEATURES_SUPPORTED
if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
- (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
+ (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
{
/* Intrapixel differencing */
- png_do_read_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_read_intrapixel(&row_info, png_ptr->row_buf + 1);
}
#endif
- if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
- png_do_read_transformations(png_ptr);
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+ if (png_ptr->transformations)
+ png_do_read_transformations(png_ptr, &row_info);
+#endif
+
+ /* The transformed pixel depth should match the depth now in row_info. */
+ if (png_ptr->transformed_pixel_depth == 0)
+ {
+ png_ptr->transformed_pixel_depth = row_info.pixel_depth;
+ if (row_info.pixel_depth > png_ptr->maximum_pixel_depth)
+ png_error(png_ptr, "sequential row overflow");
+ }
+
+ else if (png_ptr->transformed_pixel_depth != row_info.pixel_depth)
+ png_error(png_ptr, "internal sequential row size calculation error");
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Blow up interlaced rows to full size */
@@ -649,26 +620,24 @@
(png_ptr->transformations & PNG_INTERLACE))
{
if (png_ptr->pass < 6)
- /* Old interface (pre-1.0.9):
- * png_do_read_interlace(&(png_ptr->row_info),
- * png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations);
- */
- png_do_read_interlace(png_ptr);
+ png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass,
+ png_ptr->transformations);
if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row,
- png_pass_dsp_mask[png_ptr->pass]);
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
if (row != NULL)
- png_combine_row(png_ptr, row,
- png_pass_mask[png_ptr->pass]);
+ png_combine_row(png_ptr, row, 0/*row*/);
}
+
else
#endif
{
if (row != NULL)
- png_combine_row(png_ptr, row, 0xff);
+ png_combine_row(png_ptr, row, -1/*ignored*/);
+
if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row, 0xff);
+ png_combine_row(png_ptr, dsp_row, -1/*ignored*/);
}
png_read_finish_row(png_ptr);
@@ -704,7 +673,7 @@
void PNGAPI
png_read_rows(png_structp png_ptr, png_bytepp row,
- png_bytepp display_row, png_uint_32 num_rows)
+ png_bytepp display_row, png_uint_32 num_rows)
{
png_uint_32 i;
png_bytepp rp;
@@ -714,6 +683,7 @@
if (png_ptr == NULL)
return;
+
rp = row;
dp = display_row;
if (rp != NULL && dp != NULL)
@@ -724,6 +694,7 @@
png_read_row(png_ptr, rptr, dptr);
}
+
else if (rp != NULL)
for (i = 0; i < num_rows; i++)
{
@@ -731,6 +702,7 @@
png_read_row(png_ptr, rptr, NULL);
rp++;
}
+
else if (dp != NULL)
for (i = 0; i < num_rows; i++)
{
@@ -767,17 +739,40 @@
return;
#ifdef PNG_READ_INTERLACING_SUPPORTED
- pass = png_set_interlace_handling(png_ptr);
+ if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
+ {
+ pass = png_set_interlace_handling(png_ptr);
+ /* And make sure transforms are initialized. */
+ png_start_read_image(png_ptr);
+ }
+ else
+ {
+ if (png_ptr->interlaced && !(png_ptr->transformations & PNG_INTERLACE))
+ {
+ /* Caller called png_start_read_image or png_read_update_info without
+ * first turning on the PNG_INTERLACE transform. We can fix this here,
+ * but the caller should do it!
+ */
+ png_warning(png_ptr, "Interlace handling should be turned on when "
+ "using png_read_image");
+ /* Make sure this is set correctly */
+ png_ptr->num_rows = png_ptr->height;
+ }
+
+ /* Obtain the pass number, which also turns on the PNG_INTERLACE flag in
+ * the above error case.
+ */
+ pass = png_set_interlace_handling(png_ptr);
+ }
#else
if (png_ptr->interlaced)
png_error(png_ptr,
- "Cannot read interlaced image -- interlace handler disabled");
+ "Cannot read interlaced image -- interlace handler disabled");
+
pass = 1;
#endif
-
image_height=png_ptr->height;
- png_ptr->num_rows = image_height; /* Make sure this is set correctly */
for (j = 0; j < pass; j++)
{
@@ -803,164 +798,133 @@
if (png_ptr == NULL)
return;
+
png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */
do
{
- PNG_IHDR;
- PNG_IDAT;
- PNG_IEND;
- PNG_PLTE;
-#ifdef PNG_READ_bKGD_SUPPORTED
- PNG_bKGD;
-#endif
-#ifdef PNG_READ_cHRM_SUPPORTED
- PNG_cHRM;
-#endif
-#ifdef PNG_READ_gAMA_SUPPORTED
- PNG_gAMA;
-#endif
-#ifdef PNG_READ_hIST_SUPPORTED
- PNG_hIST;
-#endif
-#ifdef PNG_READ_iCCP_SUPPORTED
- PNG_iCCP;
-#endif
-#ifdef PNG_READ_iTXt_SUPPORTED
- PNG_iTXt;
-#endif
-#ifdef PNG_READ_oFFs_SUPPORTED
- PNG_oFFs;
-#endif
-#ifdef PNG_READ_pCAL_SUPPORTED
- PNG_pCAL;
-#endif
-#ifdef PNG_READ_pHYs_SUPPORTED
- PNG_pHYs;
-#endif
-#ifdef PNG_READ_sBIT_SUPPORTED
- PNG_sBIT;
-#endif
-#ifdef PNG_READ_sCAL_SUPPORTED
- PNG_sCAL;
-#endif
-#ifdef PNG_READ_sPLT_SUPPORTED
- PNG_sPLT;
-#endif
-#ifdef PNG_READ_sRGB_SUPPORTED
- PNG_sRGB;
-#endif
-#ifdef PNG_READ_tEXt_SUPPORTED
- PNG_tEXt;
-#endif
-#ifdef PNG_READ_tIME_SUPPORTED
- PNG_tIME;
-#endif
-#ifdef PNG_READ_tRNS_SUPPORTED
- PNG_tRNS;
-#endif
-#ifdef PNG_READ_zTXt_SUPPORTED
- PNG_zTXt;
-#endif
png_uint_32 length = png_read_chunk_header(png_ptr);
- PNG_CONST png_bytep chunk_name = png_ptr->chunk_name;
+ png_uint_32 chunk_name = png_ptr->chunk_name;
- if (!png_memcmp(chunk_name, png_IHDR, 4))
+ if (chunk_name == png_IHDR)
png_handle_IHDR(png_ptr, info_ptr, length);
- else if (!png_memcmp(chunk_name, png_IEND, 4))
+
+ else if (chunk_name == png_IEND)
png_handle_IEND(png_ptr, info_ptr, length);
+
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- else if (png_handle_as_unknown(png_ptr, chunk_name))
+ else if (png_chunk_unknown_handling(png_ptr, chunk_name) !=
+ PNG_HANDLE_CHUNK_AS_DEFAULT)
{
- if (!png_memcmp(chunk_name, png_IDAT, 4))
+ if (chunk_name == png_IDAT)
{
if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
png_benign_error(png_ptr, "Too many IDATs found");
}
png_handle_unknown(png_ptr, info_ptr, length);
- if (!png_memcmp(chunk_name, png_PLTE, 4))
+ if (chunk_name == png_PLTE)
png_ptr->mode |= PNG_HAVE_PLTE;
}
#endif
- else if (!png_memcmp(chunk_name, png_IDAT, 4))
+
+ else if (chunk_name == png_IDAT)
{
/* Zero length IDATs are legal after the last IDAT has been
* read, but not after other chunks have been read.
*/
if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
png_benign_error(png_ptr, "Too many IDATs found");
+
png_crc_finish(png_ptr, length);
}
- else if (!png_memcmp(chunk_name, png_PLTE, 4))
+ else if (chunk_name == png_PLTE)
png_handle_PLTE(png_ptr, info_ptr, length);
+
#ifdef PNG_READ_bKGD_SUPPORTED
- else if (!png_memcmp(chunk_name, png_bKGD, 4))
+ else if (chunk_name == png_bKGD)
png_handle_bKGD(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_cHRM_SUPPORTED
- else if (!png_memcmp(chunk_name, png_cHRM, 4))
+ else if (chunk_name == png_cHRM)
png_handle_cHRM(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_gAMA_SUPPORTED
- else if (!png_memcmp(chunk_name, png_gAMA, 4))
+ else if (chunk_name == png_gAMA)
png_handle_gAMA(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_hIST_SUPPORTED
- else if (!png_memcmp(chunk_name, png_hIST, 4))
+ else if (chunk_name == png_hIST)
png_handle_hIST(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_oFFs_SUPPORTED
- else if (!png_memcmp(chunk_name, png_oFFs, 4))
+ else if (chunk_name == png_oFFs)
png_handle_oFFs(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_pCAL_SUPPORTED
- else if (!png_memcmp(chunk_name, png_pCAL, 4))
+ else if (chunk_name == png_pCAL)
png_handle_pCAL(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_sCAL_SUPPORTED
- else if (!png_memcmp(chunk_name, png_sCAL, 4))
+ else if (chunk_name == png_sCAL)
png_handle_sCAL(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_pHYs_SUPPORTED
- else if (!png_memcmp(chunk_name, png_pHYs, 4))
+ else if (chunk_name == png_pHYs)
png_handle_pHYs(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_sBIT_SUPPORTED
- else if (!png_memcmp(chunk_name, png_sBIT, 4))
+ else if (chunk_name == png_sBIT)
png_handle_sBIT(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_sRGB_SUPPORTED
- else if (!png_memcmp(chunk_name, png_sRGB, 4))
+ else if (chunk_name == png_sRGB)
png_handle_sRGB(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_iCCP_SUPPORTED
- else if (!png_memcmp(chunk_name, png_iCCP, 4))
+ else if (chunk_name == png_iCCP)
png_handle_iCCP(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_sPLT_SUPPORTED
- else if (!png_memcmp(chunk_name, png_sPLT, 4))
+ else if (chunk_name == png_sPLT)
png_handle_sPLT(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_tEXt_SUPPORTED
- else if (!png_memcmp(chunk_name, png_tEXt, 4))
+ else if (chunk_name == png_tEXt)
png_handle_tEXt(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_tIME_SUPPORTED
- else if (!png_memcmp(chunk_name, png_tIME, 4))
+ else if (chunk_name == png_tIME)
png_handle_tIME(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_tRNS_SUPPORTED
- else if (!png_memcmp(chunk_name, png_tRNS, 4))
+ else if (chunk_name == png_tRNS)
png_handle_tRNS(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_zTXt_SUPPORTED
- else if (!png_memcmp(chunk_name, png_zTXt, 4))
+ else if (chunk_name == png_zTXt)
png_handle_zTXt(png_ptr, info_ptr, length);
#endif
+
#ifdef PNG_READ_iTXt_SUPPORTED
- else if (!png_memcmp(chunk_name, png_iTXt, 4))
+ else if (chunk_name == png_iTXt)
png_handle_iTXt(png_ptr, info_ptr, length);
#endif
+
else
png_handle_unknown(png_ptr, info_ptr, length);
} while (!(png_ptr->mode & PNG_HAVE_IEND));
@@ -970,7 +934,7 @@
/* Free all memory used by the read */
void PNGAPI
png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
- png_infopp end_info_ptr_ptr)
+ png_infopp end_info_ptr_ptr)
{
png_structp png_ptr = NULL;
png_infop info_ptr = NULL, end_info_ptr = NULL;
@@ -1021,7 +985,7 @@
#endif
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)end_info_ptr, (png_free_ptr)free_fn,
- (png_voidp)mem_ptr);
+ (png_voidp)mem_ptr);
#else
png_destroy_struct((png_voidp)end_info_ptr);
#endif
@@ -1049,7 +1013,9 @@
jmp_buf tmp_jmp;
#endif
png_error_ptr error_fn;
+#ifdef PNG_WARNINGS_SUPPORTED
png_error_ptr warning_fn;
+#endif
png_voidp error_ptr;
#ifdef PNG_USER_MEM_SUPPORTED
png_free_ptr free_fn;
@@ -1063,74 +1029,39 @@
if (end_info_ptr != NULL)
png_info_destroy(png_ptr, end_info_ptr);
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ png_destroy_gamma_table(png_ptr);
+#endif
+
png_free(png_ptr, png_ptr->zbuf);
png_free(png_ptr, png_ptr->big_row_buf);
- png_free(png_ptr, png_ptr->prev_row);
+ png_free(png_ptr, png_ptr->big_prev_row);
png_free(png_ptr, png_ptr->chunkdata);
+
#ifdef PNG_READ_QUANTIZE_SUPPORTED
png_free(png_ptr, png_ptr->palette_lookup);
png_free(png_ptr, png_ptr->quantize_index);
#endif
-#ifdef PNG_READ_GAMMA_SUPPORTED
- png_free(png_ptr, png_ptr->gamma_table);
-#endif
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
- png_free(png_ptr, png_ptr->gamma_from_1);
- png_free(png_ptr, png_ptr->gamma_to_1);
-#endif
+
if (png_ptr->free_me & PNG_FREE_PLTE)
png_zfree(png_ptr, png_ptr->palette);
png_ptr->free_me &= ~PNG_FREE_PLTE;
+
#if defined(PNG_tRNS_SUPPORTED) || \
defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
if (png_ptr->free_me & PNG_FREE_TRNS)
png_free(png_ptr, png_ptr->trans_alpha);
png_ptr->free_me &= ~PNG_FREE_TRNS;
#endif
+
#ifdef PNG_READ_hIST_SUPPORTED
if (png_ptr->free_me & PNG_FREE_HIST)
png_free(png_ptr, png_ptr->hist);
png_ptr->free_me &= ~PNG_FREE_HIST;
#endif
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (png_ptr->gamma_16_table != NULL)
- {
- int i;
- int istop = (1 << (8 - png_ptr->gamma_shift));
- for (i = 0; i < istop; i++)
- {
- png_free(png_ptr, png_ptr->gamma_16_table[i]);
- }
- png_free(png_ptr, png_ptr->gamma_16_table);
- }
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
- if (png_ptr->gamma_16_from_1 != NULL)
- {
- int i;
- int istop = (1 << (8 - png_ptr->gamma_shift));
- for (i = 0; i < istop; i++)
- {
- png_free(png_ptr, png_ptr->gamma_16_from_1[i]);
- }
- png_free(png_ptr, png_ptr->gamma_16_from_1);
- }
- if (png_ptr->gamma_16_to_1 != NULL)
- {
- int i;
- int istop = (1 << (8 - png_ptr->gamma_shift));
- for (i = 0; i < istop; i++)
- {
- png_free(png_ptr, png_ptr->gamma_16_to_1[i]);
- }
- png_free(png_ptr, png_ptr->gamma_16_to_1);
- }
-#endif
-#endif
-#ifdef PNG_TIME_RFC1123_SUPPORTED
- png_free(png_ptr, png_ptr->time_buffer);
-#endif
inflateEnd(&png_ptr->zstream);
+
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
png_free(png_ptr, png_ptr->save_buffer);
#endif
@@ -1145,11 +1076,13 @@
* being used again.
*/
#ifdef PNG_SETJMP_SUPPORTED
- png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
+ png_memcpy(tmp_jmp, png_ptr->longjmp_buffer, png_sizeof(jmp_buf));
#endif
error_fn = png_ptr->error_fn;
+#ifdef PNG_WARNINGS_SUPPORTED
warning_fn = png_ptr->warning_fn;
+#endif
error_ptr = png_ptr->error_ptr;
#ifdef PNG_USER_MEM_SUPPORTED
free_fn = png_ptr->free_fn;
@@ -1158,14 +1091,16 @@
png_memset(png_ptr, 0, png_sizeof(png_struct));
png_ptr->error_fn = error_fn;
+#ifdef PNG_WARNINGS_SUPPORTED
png_ptr->warning_fn = warning_fn;
+#endif
png_ptr->error_ptr = error_ptr;
#ifdef PNG_USER_MEM_SUPPORTED
png_ptr->free_fn = free_fn;
#endif
#ifdef PNG_SETJMP_SUPPORTED
- png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
+ png_memcpy(png_ptr->longjmp_buffer, tmp_jmp, png_sizeof(jmp_buf));
#endif
}
@@ -1175,6 +1110,7 @@
{
if (png_ptr == NULL)
return;
+
png_ptr->read_row_fn = read_row_fn;
}
@@ -1188,7 +1124,7 @@
{
int row;
- if (png_ptr == NULL)
+ if (png_ptr == NULL || info_ptr == NULL)
return;
/* png_read_info() gives us all of the information from the
@@ -1200,8 +1136,22 @@
/* -------------- image transformations start here ------------------- */
-#ifdef PNG_READ_16_TO_8_SUPPORTED
- /* Tell libpng to strip 16 bit/color files down to 8 bits per color.
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ /* Tell libpng to strip 16-bit/color files down to 8 bits per color.
+ */
+ if (transforms & PNG_TRANSFORM_SCALE_16)
+ {
+ /* Added at libpng-1.5.4. "strip_16" produces the same result that it
+ * did in earlier versions, while "scale_16" is now more accurate.
+ */
+ png_set_scale_16(png_ptr);
+ }
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+ /* If both SCALE and STRIP are required pngrtran will effectively cancel the
+ * latter by doing SCALE first. This is ok and allows apps not to check for
+ * which is supported to get the right answer.
*/
if (transforms & PNG_TRANSFORM_STRIP_16)
png_set_strip_16(png_ptr);
@@ -1270,44 +1220,50 @@
#endif
#ifdef PNG_READ_BGR_SUPPORTED
- /* Flip the RGB pixels to BGR (or RGBA to BGRA)
- */
+ /* Flip the RGB pixels to BGR (or RGBA to BGRA) */
if (transforms & PNG_TRANSFORM_BGR)
png_set_bgr(png_ptr);
#endif
#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
- /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR)
- */
+ /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */
if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
- png_set_swap_alpha(png_ptr);
+ png_set_swap_alpha(png_ptr);
#endif
#ifdef PNG_READ_SWAP_SUPPORTED
- /* Swap bytes of 16 bit files to least significant byte first
- */
+ /* Swap bytes of 16-bit files to least significant byte first */
if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
png_set_swap(png_ptr);
#endif
/* Added at libpng-1.2.41 */
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
- /* Invert the alpha channel from opacity to transparency
- */
+ /* Invert the alpha channel from opacity to transparency */
if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
- png_set_invert_alpha(png_ptr);
+ png_set_invert_alpha(png_ptr);
#endif
/* Added at libpng-1.2.41 */
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
- /* Expand grayscale image to RGB
- */
+ /* Expand grayscale image to RGB */
if (transforms & PNG_TRANSFORM_GRAY_TO_RGB)
- png_set_gray_to_rgb(png_ptr);
+ png_set_gray_to_rgb(png_ptr);
+#endif
+
+/* Added at libpng-1.5.4 */
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+ if (transforms & PNG_TRANSFORM_EXPAND_16)
+ png_set_expand_16(png_ptr);
#endif
/* We don't handle adding filler bytes */
+ /* We use png_read_image and rely on that for interlace handling, but we also
+ * call png_read_update_info therefore must turn on interlace handling now:
+ */
+ (void)png_set_interlace_handling(png_ptr);
+
/* Optional call to gamma correct and add the background to the palette
* and update info structure. REQUIRED if you are expecting libpng to
* update the palette for you (i.e., you selected such a transform above).
@@ -1319,10 +1275,10 @@
png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
if (info_ptr->row_pointers == NULL)
{
- png_uint_32 iptr;
+ png_uint_32 iptr;
info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr,
- info_ptr->height * png_sizeof(png_bytep));
+ info_ptr->height * png_sizeof(png_bytep));
for (iptr=0; iptr<info_ptr->height; iptr++)
info_ptr->row_pointers[iptr] = NULL;
diff --git a/pngrio.c b/pngrio.c
index 710f4f0..e9c381c 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@
/* pngrio.c - functions for data input
*
- * Last changed in libpng 1.4.6 [January 14, 2011]
+ * Last changed in libpng 1.5.0 [January 6, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -18,11 +18,10 @@
* libpng use it at run time with png_set_read_fn(...).
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#ifdef PNG_READ_SUPPORTED
#include "pngpriv.h"
+#ifdef PNG_READ_SUPPORTED
+
/* Read the data from whatever input you are using. The default routine
* reads from a file pointer. Note that this routine sometimes gets called
* with very small lengths, so you should implement some kind of simple
@@ -36,6 +35,7 @@
if (png_ptr->read_data_fn != NULL)
(*(png_ptr->read_data_fn))(png_ptr, data, length);
+
else
png_error(png_ptr, "Call to NULL read function");
}
@@ -46,14 +46,15 @@
* read_data function and use it at run time with png_set_read_fn(), rather
* than changing the library.
*/
-#ifndef USE_FAR_KEYWORD
-void PNGAPI
+# ifndef USE_FAR_KEYWORD
+void PNGCBAPI
png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_size_t check;
if (png_ptr == NULL)
return;
+
/* fread() returns 0 on error, so it is OK to store this in a png_size_t
* instead of an int, which is what fread() actually returns.
*/
@@ -62,7 +63,7 @@
if (check != length)
png_error(png_ptr, "Read Error");
}
-#else
+# else
/* This is the model-independent version. Since the standard I/O library
can't handle far buffers in the medium and small models, we have to copy
the data.
@@ -71,7 +72,7 @@
#define NEAR_BUF_SIZE 1024
#define MIN(a,b) (a <= b ? a : b)
-static void PNGAPI
+static void PNGCBAPI
png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_size_t check;
@@ -80,46 +81,57 @@
if (png_ptr == NULL)
return;
+
/* Check if data really is near. If so, use usual code. */
n_data = (png_byte *)CVT_PTR_NOCHECK(data);
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
+
if ((png_bytep)n_data == data)
{
check = fread(n_data, 1, length, io_ptr);
}
+
else
{
png_byte buf[NEAR_BUF_SIZE];
png_size_t read, remaining, err;
check = 0;
remaining = length;
+
do
{
read = MIN(NEAR_BUF_SIZE, remaining);
err = fread(buf, 1, read, io_ptr);
png_memcpy(data, buf, read); /* copy far buffer to near buffer */
+
if (err != read)
break;
+
else
check += err;
+
data += read;
remaining -= read;
}
while (remaining != 0);
}
+
if ((png_uint_32)check != (png_uint_32)length)
png_error(png_ptr, "read Error");
}
-#endif
+# endif
#endif
/* This function allows the application to supply a new input function
* for libpng if standard C streams aren't being used.
*
* This function takes as its arguments:
+ *
* png_ptr - pointer to a png input data structure
+ *
* io_ptr - pointer to user supplied structure containing info about
* the input functions. May be NULL.
+ *
* read_data_fn - pointer to a new input function that takes as its
* arguments a pointer to a png_struct, a pointer to
* a location where input data can be stored, and a 32-bit
@@ -135,11 +147,13 @@
{
if (png_ptr == NULL)
return;
+
png_ptr->io_ptr = io_ptr;
#ifdef PNG_STDIO_SUPPORTED
if (read_data_fn != NULL)
png_ptr->read_data_fn = read_data_fn;
+
else
png_ptr->read_data_fn = png_default_read_data;
#else
@@ -151,9 +165,8 @@
{
png_ptr->write_data_fn = NULL;
png_warning(png_ptr,
- "It's an error to set both read_data_fn and write_data_fn in the ");
- png_warning(png_ptr,
- "same structure. Resetting write_data_fn to NULL");
+ "Can't set both read_data_fn and write_data_fn in the"
+ " same structure");
}
#ifdef PNG_WRITE_FLUSH_SUPPORTED
diff --git a/pngrtran.c b/pngrtran.c
index f9c090b..1079595 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
- * Last changed in libpng 1.4.8 [July 7, 2011]
+ * Last changed in libpng 1.5.7 [December 15, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -16,11 +16,10 @@
* in pngtrans.c.
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#ifdef PNG_READ_SUPPORTED
#include "pngpriv.h"
+#ifdef PNG_READ_SUPPORTED
+
/* Set the action on getting a CRC error for an ancillary or critical chunk. */
void PNGAPI
png_set_crc_action(png_structp png_ptr, int crit_action, int ancil_action)
@@ -89,35 +88,69 @@
}
}
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
- defined(PNG_FLOATING_POINT_SUPPORTED)
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
/* Handle alpha and tRNS via a background color */
-void PNGAPI
-png_set_background(png_structp png_ptr,
- png_color_16p background_color, int background_gamma_code,
- int need_expand, double background_gamma)
+void PNGFAPI
+png_set_background_fixed(png_structp png_ptr,
+ png_const_color_16p background_color, int background_gamma_code,
+ int need_expand, png_fixed_point background_gamma)
{
- png_debug(1, "in png_set_background");
+ png_debug(1, "in png_set_background_fixed");
if (png_ptr == NULL)
return;
+
if (background_gamma_code == PNG_BACKGROUND_GAMMA_UNKNOWN)
{
png_warning(png_ptr, "Application must supply a known background gamma");
return;
}
- png_ptr->transformations |= PNG_BACKGROUND;
+ png_ptr->transformations |= PNG_COMPOSE | PNG_STRIP_ALPHA;
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+
png_memcpy(&(png_ptr->background), background_color,
png_sizeof(png_color_16));
- png_ptr->background_gamma = (float)background_gamma;
+ png_ptr->background_gamma = background_gamma;
png_ptr->background_gamma_type = (png_byte)(background_gamma_code);
- png_ptr->transformations |= (need_expand ? PNG_BACKGROUND_EXPAND : 0);
+ if (need_expand)
+ png_ptr->transformations |= PNG_BACKGROUND_EXPAND;
+ else
+ png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND;
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_background(png_structp png_ptr,
+ png_const_color_16p background_color, int background_gamma_code,
+ int need_expand, double background_gamma)
+{
+ png_set_background_fixed(png_ptr, background_color, background_gamma_code,
+ need_expand, png_fixed(png_ptr, background_gamma, "png_set_background"));
+}
+# endif /* FLOATING_POINT */
+#endif /* READ_BACKGROUND */
+
+/* Scale 16-bit depth files to 8-bit depth. If both of these are set then the
+ * one that pngrtran does first (scale) happens. This is necessary to allow the
+ * TRANSFORM and API behavior to be somewhat consistent, and it's simpler.
+ */
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+void PNGAPI
+png_set_scale_16(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_scale_16");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= PNG_SCALE_16_TO_8;
}
#endif
-#ifdef PNG_READ_16_TO_8_SUPPORTED
-/* Strip 16 bit depth files to 8 bit depth */
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+/* Chop 16-bit depth files to 8-bit depth */
void PNGAPI
png_set_strip_16(png_structp png_ptr)
{
@@ -125,6 +158,7 @@
if (png_ptr == NULL)
return;
+
png_ptr->transformations |= PNG_16_TO_8;
}
#endif
@@ -137,17 +171,200 @@
if (png_ptr == NULL)
return;
- png_ptr->flags |= PNG_FLAG_STRIP_ALPHA;
+
+ png_ptr->transformations |= PNG_STRIP_ALPHA;
}
#endif
+#if defined(PNG_READ_ALPHA_MODE_SUPPORTED) || defined(PNG_READ_GAMMA_SUPPORTED)
+static png_fixed_point
+translate_gamma_flags(png_structp png_ptr, png_fixed_point output_gamma,
+ int is_screen)
+{
+ /* Check for flag values. The main reason for having the old Mac value as a
+ * flag is that it is pretty near impossible to work out what the correct
+ * value is from Apple documentation - a working Mac system is needed to
+ * discover the value!
+ */
+ if (output_gamma == PNG_DEFAULT_sRGB ||
+ output_gamma == PNG_FP_1 / PNG_DEFAULT_sRGB)
+ {
+ /* If there is no sRGB support this just sets the gamma to the standard
+ * sRGB value. (This is a side effect of using this function!)
+ */
+# ifdef PNG_READ_sRGB_SUPPORTED
+ png_ptr->flags |= PNG_FLAG_ASSUME_sRGB;
+# endif
+ if (is_screen)
+ output_gamma = PNG_GAMMA_sRGB;
+ else
+ output_gamma = PNG_GAMMA_sRGB_INVERSE;
+ }
+
+ else if (output_gamma == PNG_GAMMA_MAC_18 ||
+ output_gamma == PNG_FP_1 / PNG_GAMMA_MAC_18)
+ {
+ if (is_screen)
+ output_gamma = PNG_GAMMA_MAC_OLD;
+ else
+ output_gamma = PNG_GAMMA_MAC_INVERSE;
+ }
+
+ return output_gamma;
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+static png_fixed_point
+convert_gamma_value(png_structp png_ptr, double output_gamma)
+{
+ /* The following silently ignores cases where fixed point (times 100,000)
+ * gamma values are passed to the floating point API. This is safe and it
+ * means the fixed point constants work just fine with the floating point
+ * API. The alternative would just lead to undetected errors and spurious
+ * bug reports. Negative values fail inside the _fixed API unless they
+ * correspond to the flag values.
+ */
+ if (output_gamma > 0 && output_gamma < 128)
+ output_gamma *= PNG_FP_1;
+
+ /* This preserves -1 and -2 exactly: */
+ output_gamma = floor(output_gamma + .5);
+
+ if (output_gamma > PNG_FP_MAX || output_gamma < PNG_FP_MIN)
+ png_fixed_error(png_ptr, "gamma value");
+
+ return (png_fixed_point)output_gamma;
+}
+# endif
+#endif /* READ_ALPHA_MODE || READ_GAMMA */
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+void PNGFAPI
+png_set_alpha_mode_fixed(png_structp png_ptr, int mode,
+ png_fixed_point output_gamma)
+{
+ int compose = 0;
+ png_fixed_point file_gamma;
+
+ png_debug(1, "in png_set_alpha_mode");
+
+ if (png_ptr == NULL)
+ return;
+
+ output_gamma = translate_gamma_flags(png_ptr, output_gamma, 1/*screen*/);
+
+ /* Validate the value to ensure it is in a reasonable range. The value
+ * is expected to be 1 or greater, but this range test allows for some
+ * viewing correction values. The intent is to weed out users of this API
+ * who use the inverse of the gamma value accidentally! Since some of these
+ * values are reasonable this may have to be changed.
+ */
+ if (output_gamma < 70000 || output_gamma > 300000)
+ png_error(png_ptr, "output gamma out of expected range");
+
+ /* The default file gamma is the inverse of the output gamma; the output
+ * gamma may be changed below so get the file value first:
+ */
+ file_gamma = png_reciprocal(output_gamma);
+
+ /* There are really 8 possibilities here, composed of any combination
+ * of:
+ *
+ * premultiply the color channels
+ * do not encode non-opaque pixels
+ * encode the alpha as well as the color channels
+ *
+ * The differences disappear if the input/output ('screen') gamma is 1.0,
+ * because then the encoding is a no-op and there is only the choice of
+ * premultiplying the color channels or not.
+ *
+ * png_set_alpha_mode and png_set_background interact because both use
+ * png_compose to do the work. Calling both is only useful when
+ * png_set_alpha_mode is used to set the default mode - PNG_ALPHA_PNG - along
+ * with a default gamma value. Otherwise PNG_COMPOSE must not be set.
+ */
+ switch (mode)
+ {
+ case PNG_ALPHA_PNG: /* default: png standard */
+ /* No compose, but it may be set by png_set_background! */
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+ break;
+
+ case PNG_ALPHA_ASSOCIATED: /* color channels premultiplied */
+ compose = 1;
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+ /* The output is linear: */
+ output_gamma = PNG_FP_1;
+ break;
+
+ case PNG_ALPHA_OPTIMIZED: /* associated, non-opaque pixels linear */
+ compose = 1;
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags |= PNG_FLAG_OPTIMIZE_ALPHA;
+ /* output_gamma records the encoding of opaque pixels! */
+ break;
+
+ case PNG_ALPHA_BROKEN: /* associated, non-linear, alpha encoded */
+ compose = 1;
+ png_ptr->transformations |= PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+ break;
+
+ default:
+ png_error(png_ptr, "invalid alpha mode");
+ }
+
+ /* Only set the default gamma if the file gamma has not been set (this has
+ * the side effect that the gamma in a second call to png_set_alpha_mode will
+ * be ignored.)
+ */
+ if (png_ptr->gamma == 0)
+ png_ptr->gamma = file_gamma;
+
+ /* But always set the output gamma: */
+ png_ptr->screen_gamma = output_gamma;
+
+ /* Finally, if pre-multiplying, set the background fields to achieve the
+ * desired result.
+ */
+ if (compose)
+ {
+ /* And obtain alpha pre-multiplication by composing on black: */
+ png_memset(&png_ptr->background, 0, sizeof png_ptr->background);
+ png_ptr->background_gamma = png_ptr->gamma; /* just in case */
+ png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_FILE;
+ png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND;
+
+ if (png_ptr->transformations & PNG_COMPOSE)
+ png_error(png_ptr,
+ "conflicting calls to set alpha mode and background");
+
+ png_ptr->transformations |= PNG_COMPOSE;
+ }
+
+ /* New API, make sure apps call the correct initializers: */
+ png_ptr->flags |= PNG_FLAG_DETECT_UNINITIALIZED;
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_alpha_mode(png_structp png_ptr, int mode, double output_gamma)
+{
+ png_set_alpha_mode_fixed(png_ptr, mode, convert_gamma_value(png_ptr,
+ output_gamma));
+}
+# endif
+#endif
+
#ifdef PNG_READ_QUANTIZE_SUPPORTED
-/* Quantize file to 8 bit. Supply a palette, the current number
+/* Dither file to 8-bit. Supply a palette, the current number
* of elements in the palette, the maximum number of elements
* allowed, and a histogram if possible. If the current number
* of colors is greater then the maximum number, the palette will be
* modified to fit in the maximum number. "full_quantize" indicates
- * whether we need a quantizeing cube set up for RGB images, or if we
+ * whether we need a quantizing cube set up for RGB images, or if we
* simply are reducing the number of colors in a paletted image.
*/
@@ -162,13 +379,14 @@
void PNGAPI
png_set_quantize(png_structp png_ptr, png_colorp palette,
- int num_palette, int maximum_colors, png_uint_16p histogram,
- int full_quantize)
+ int num_palette, int maximum_colors, png_const_uint_16p histogram,
+ int full_quantize)
{
png_debug(1, "in png_set_quantize");
if (png_ptr == NULL)
return;
+
png_ptr->transformations |= PNG_QUANTIZE;
if (!full_quantize)
@@ -176,7 +394,7 @@
int i;
png_ptr->quantize_index = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * png_sizeof(png_byte)));
+ (png_uint_32)(num_palette * png_sizeof(png_byte)));
for (i = 0; i < num_palette; i++)
png_ptr->quantize_index[i] = (png_byte)i;
}
@@ -193,7 +411,7 @@
/* Initialize an array to sort colors */
png_ptr->quantize_sort = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * png_sizeof(png_byte)));
+ (png_uint_32)(num_palette * png_sizeof(png_byte)));
/* Initialize the quantize_sort array */
for (i = 0; i < num_palette; i++)
@@ -225,6 +443,7 @@
done = 0;
}
}
+
if (done)
break;
}
@@ -244,6 +463,7 @@
do
j--;
while ((int)png_ptr->quantize_sort[j] >= maximum_colors);
+
palette[i] = palette[j];
}
}
@@ -325,9 +545,9 @@
/* Initialize palette index arrays */
png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * png_sizeof(png_byte)));
+ (png_uint_32)(num_palette * png_sizeof(png_byte)));
png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * png_sizeof(png_byte)));
+ (png_uint_32)(num_palette * png_sizeof(png_byte)));
/* Initialize the sort array */
for (i = 0; i < num_palette; i++)
@@ -337,7 +557,7 @@
}
hash = (png_dsortpp)png_calloc(png_ptr, (png_uint_32)(769 *
- png_sizeof(png_dsortp)));
+ png_sizeof(png_dsortp)));
num_new_palette = num_palette;
@@ -368,8 +588,10 @@
t = (png_dsortp)png_malloc_warn(png_ptr,
(png_uint_32)(png_sizeof(png_dsort)));
+
if (t == NULL)
break;
+
t->next = hash[d];
t->left = (png_byte)i;
t->right = (png_byte)j;
@@ -390,9 +612,9 @@
for (p = hash[i]; p; p = p->next)
{
if ((int)png_ptr->index_to_palette[p->left]
- < num_new_palette &&
- (int)png_ptr->index_to_palette[p->right]
- < num_new_palette)
+ < num_new_palette &&
+ (int)png_ptr->index_to_palette[p->right]
+ < num_new_palette)
{
int j, next_j;
@@ -409,7 +631,7 @@
num_new_palette--;
palette[png_ptr->index_to_palette[j]]
- = palette[num_new_palette];
+ = palette[num_new_palette];
if (!full_quantize)
{
int k;
@@ -417,23 +639,26 @@
for (k = 0; k < num_palette; k++)
{
if (png_ptr->quantize_index[k] ==
- png_ptr->index_to_palette[j])
+ png_ptr->index_to_palette[j])
png_ptr->quantize_index[k] =
- png_ptr->index_to_palette[next_j];
+ png_ptr->index_to_palette[next_j];
+
if ((int)png_ptr->quantize_index[k] ==
- num_new_palette)
+ num_new_palette)
png_ptr->quantize_index[k] =
- png_ptr->index_to_palette[j];
+ png_ptr->index_to_palette[j];
}
}
png_ptr->index_to_palette[png_ptr->palette_to_index
- [num_new_palette]] = png_ptr->index_to_palette[j];
+ [num_new_palette]] = png_ptr->index_to_palette[j];
+
png_ptr->palette_to_index[png_ptr->index_to_palette[j]]
- = png_ptr->palette_to_index[num_new_palette];
+ = png_ptr->palette_to_index[num_new_palette];
png_ptr->index_to_palette[j] =
(png_byte)num_new_palette;
+
png_ptr->palette_to_index[num_new_palette] =
(png_byte)j;
}
@@ -480,17 +705,18 @@
int i;
png_bytep distance;
int total_bits = PNG_QUANTIZE_RED_BITS + PNG_QUANTIZE_GREEN_BITS +
- PNG_QUANTIZE_BLUE_BITS;
+ PNG_QUANTIZE_BLUE_BITS;
int num_red = (1 << PNG_QUANTIZE_RED_BITS);
int num_green = (1 << PNG_QUANTIZE_GREEN_BITS);
int num_blue = (1 << PNG_QUANTIZE_BLUE_BITS);
png_size_t num_entries = ((png_size_t)1 << total_bits);
- png_ptr->palette_lookup = (png_bytep )png_calloc(png_ptr,
- (png_uint_32)(num_entries * png_sizeof(png_byte)));
+ png_ptr->palette_lookup = (png_bytep)png_calloc(png_ptr,
+ (png_uint_32)(num_entries * png_sizeof(png_byte)));
distance = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_entries *
- png_sizeof(png_byte)));
+ png_sizeof(png_byte)));
+
png_memset(distance, 0xff, num_entries * png_sizeof(png_byte));
for (i = 0; i < num_palette; i++)
@@ -538,33 +764,56 @@
}
#endif /* PNG_READ_QUANTIZE_SUPPORTED */
-#if defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
-/* Transform the image from the file_gamma to the screen_gamma. We
- * only do transformations on images where the file_gamma and screen_gamma
- * are not close reciprocals, otherwise it slows things down slightly, and
- * also needlessly introduces small errors.
- *
- * We will turn off gamma transformation later if no semitransparent entries
- * are present in the tRNS array for palette images. We can't do it here
- * because we don't necessarily have the tRNS chunk yet.
- */
-void PNGAPI
-png_set_gamma(png_structp png_ptr, double scrn_gamma, double file_gamma)
+#ifdef PNG_READ_GAMMA_SUPPORTED
+void PNGFAPI
+png_set_gamma_fixed(png_structp png_ptr, png_fixed_point scrn_gamma,
+ png_fixed_point file_gamma)
{
- png_debug(1, "in png_set_gamma");
+ png_debug(1, "in png_set_gamma_fixed");
if (png_ptr == NULL)
return;
- if ((fabs(scrn_gamma * file_gamma - 1.0) > PNG_GAMMA_THRESHOLD) ||
- (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) ||
- (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE))
- png_ptr->transformations |= PNG_GAMMA;
- png_ptr->gamma = (float)file_gamma;
- png_ptr->screen_gamma = (float)scrn_gamma;
-}
+ /* New in libpng-1.5.4 - reserve particular negative values as flags. */
+ scrn_gamma = translate_gamma_flags(png_ptr, scrn_gamma, 1/*screen*/);
+ file_gamma = translate_gamma_flags(png_ptr, file_gamma, 0/*file*/);
+
+#if PNG_LIBPNG_VER >= 10600
+ /* Checking the gamma values for being >0 was added in 1.5.4 along with the
+ * premultiplied alpha support; this actually hides an undocumented feature
+ * of the previous implementation which allowed gamma processing to be
+ * disabled in background handling. There is no evidence (so far) that this
+ * was being used; however, png_set_background itself accepted and must still
+ * accept '0' for the gamma value it takes, because it isn't always used.
+ *
+ * Since this is an API change (albeit a very minor one that removes an
+ * undocumented API feature) it will not be made until libpng-1.6.0.
+ */
+ if (file_gamma <= 0)
+ png_error(png_ptr, "invalid file gamma in png_set_gamma");
+
+ if (scrn_gamma <= 0)
+ png_error(png_ptr, "invalid screen gamma in png_set_gamma");
#endif
+ /* Set the gamma values unconditionally - this overrides the value in the PNG
+ * file if a gAMA chunk was present. png_set_alpha_mode provides a
+ * different, easier, way to default the file gamma.
+ */
+ png_ptr->gamma = file_gamma;
+ png_ptr->screen_gamma = scrn_gamma;
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_gamma(png_structp png_ptr, double scrn_gamma, double file_gamma)
+{
+ png_set_gamma_fixed(png_ptr, convert_gamma_value(png_ptr, scrn_gamma),
+ convert_gamma_value(png_ptr, file_gamma));
+}
+# endif /* FLOATING_POINT_SUPPORTED */
+#endif /* READ_GAMMA */
+
#ifdef PNG_READ_EXPAND_SUPPORTED
/* Expand paletted images to RGB, expand grayscale images of
* less than 8-bit depth to 8-bit depth, and expand tRNS chunks
@@ -639,49 +888,46 @@
}
#endif /* defined(PNG_READ_EXPAND_SUPPORTED) */
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+/* Expand to 16-bit channels, expand the tRNS chunk too (because otherwise
+ * it may not work correctly.)
+ */
+void PNGAPI
+png_set_expand_16(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_expand_16");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= (PNG_EXPAND_16 | PNG_EXPAND | PNG_EXPAND_tRNS);
+ png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
+
+ /* New API, make sure apps call the correct initializers: */
+ png_ptr->flags |= PNG_FLAG_DETECT_UNINITIALIZED;
+}
+#endif
+
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
void PNGAPI
png_set_gray_to_rgb(png_structp png_ptr)
{
png_debug(1, "in png_set_gray_to_rgb");
- png_ptr->transformations |= PNG_GRAY_TO_RGB;
- png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
+ if (png_ptr != NULL)
+ {
+ /* Because rgb must be 8 bits or more: */
+ png_set_expand_gray_1_2_4_to_8(png_ptr);
+ png_ptr->transformations |= PNG_GRAY_TO_RGB;
+ png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
+ }
}
#endif
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-/* Convert a RGB image to a grayscale of the same width. This allows us,
- * for example, to convert a 24 bpp RGB image into an 8 bpp grayscale image.
- */
-
-void PNGAPI
-png_set_rgb_to_gray(png_structp png_ptr, int error_action, double red,
- double green)
-{
- int red_fixed, green_fixed;
- if (png_ptr == NULL)
- return;
- if (red > 21474.83647 || red < -21474.83648 ||
- green > 21474.83647 || green < -21474.83648)
- {
- png_warning(png_ptr, "ignoring out of range rgb_to_gray coefficients");
- red_fixed = -1;
- green_fixed = -1;
- }
- else
- {
- red_fixed = (int)((float)red*100000.0 + 0.5);
- green_fixed = (int)((float)green*100000.0 + 0.5);
- }
- png_set_rgb_to_gray_fixed(png_ptr, error_action, red_fixed, green_fixed);
-}
-#endif
-
-void PNGAPI
+void PNGFAPI
png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action,
- png_fixed_point red, png_fixed_point green)
+ png_fixed_point red, png_fixed_point green)
{
png_debug(1, "in png_set_rgb_to_gray");
@@ -690,17 +936,20 @@
switch(error_action)
{
- case 1: png_ptr->transformations |= PNG_RGB_TO_GRAY;
- break;
+ case PNG_ERROR_ACTION_NONE:
+ png_ptr->transformations |= PNG_RGB_TO_GRAY;
+ break;
- case 2: png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN;
- break;
+ case PNG_ERROR_ACTION_WARN:
+ png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN;
+ break;
- case 3: png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR;
+ case PNG_ERROR_ACTION_ERROR:
+ png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR;
break;
default:
- png_error(png_ptr, "invalid error action in png_set_rgb_to_gray");
+ png_error(png_ptr, "invalid error action to rgb_to_gray");
break;
}
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
@@ -710,21 +959,26 @@
{
png_warning(png_ptr,
"Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED");
+
png_ptr->transformations &= ~PNG_RGB_TO_GRAY;
}
#endif
{
- if (red >= 0 && green >= 0 && red + green <= 100000L)
+ if (red >= 0 && green >= 0 && red + green <= PNG_FP_1)
{
png_uint_16 red_int, green_int;
- red_int = (png_uint_16)(((png_uint_32)red*32768L)/100000L);
- green_int = (png_uint_16)(((png_uint_32)green*32768L)/100000L);
+ /* NOTE: this calculation does not round, but this behavior is retained
+ * for consistency, the inaccuracy is very small. The code here always
+ * overwrites the coefficients, regardless of whether they have been
+ * defaulted or set already.
+ */
+ red_int = (png_uint_16)(((png_uint_32)red*32768)/100000);
+ green_int = (png_uint_16)(((png_uint_32)green*32768)/100000);
png_ptr->rgb_to_gray_red_coeff = red_int;
png_ptr->rgb_to_gray_green_coeff = green_int;
- png_ptr->rgb_to_gray_blue_coeff =
- (png_uint_16)(32768 - red_int - green_int);
+ png_ptr->rgb_to_gray_coefficients_set = 1;
}
else
@@ -733,28 +987,48 @@
png_warning(png_ptr,
"ignoring out of range rgb_to_gray coefficients");
- /* Use the defaults, from the cHRM chunk if set, else the built in Rec
- * 709 values (which correspond to sRGB, so we don't have to worry
- * about the sRGB chunk!)
+ /* Use the defaults, from the cHRM chunk if set, else the historical
+ * values which are close to the sRGB/HDTV/ITU-Rec 709 values. See
+ * png_do_rgb_to_gray for more discussion of the values. In this case
+ * the coefficients are not marked as 'set' and are not overwritten if
+ * something has already provided a default.
*/
if (png_ptr->rgb_to_gray_red_coeff == 0 &&
- png_ptr->rgb_to_gray_green_coeff == 0 &&
- png_ptr->rgb_to_gray_blue_coeff == 0)
+ png_ptr->rgb_to_gray_green_coeff == 0)
{
- png_ptr->rgb_to_gray_red_coeff = 6968; /* .212671 * 32768 + .5 */
- png_ptr->rgb_to_gray_green_coeff = 23434; /* .715160 * 32768 + .5 */
- png_ptr->rgb_to_gray_blue_coeff = 2366;
+ png_ptr->rgb_to_gray_red_coeff = 6968;
+ png_ptr->rgb_to_gray_green_coeff = 23434;
+ /* png_ptr->rgb_to_gray_blue_coeff = 2366; */
}
}
}
}
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+/* Convert a RGB image to a grayscale of the same width. This allows us,
+ * for example, to convert a 24 bpp RGB image into an 8 bpp grayscale image.
+ */
+
+void PNGAPI
+png_set_rgb_to_gray(png_structp png_ptr, int error_action, double red,
+ double green)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_set_rgb_to_gray_fixed(png_ptr, error_action,
+ png_fixed(png_ptr, red, "rgb to gray red coefficient"),
+ png_fixed(png_ptr, green, "rgb to gray green coefficient"));
+}
+#endif /* FLOATING POINT */
+
#endif
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
void PNGAPI
png_set_read_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
- read_user_transform_fn)
+ read_user_transform_fn)
{
png_debug(1, "in png_set_read_user_transform_fn");
@@ -768,26 +1042,345 @@
}
#endif
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* In the case of gamma transformations only do transformations on images where
+ * the [file] gamma and screen_gamma are not close reciprocals, otherwise it
+ * slows things down slightly, and also needlessly introduces small errors.
+ */
+static int /* PRIVATE */
+png_gamma_threshold(png_fixed_point screen_gamma, png_fixed_point file_gamma)
+{
+ /* PNG_GAMMA_THRESHOLD is the threshold for performing gamma
+ * correction as a difference of the overall transform from 1.0
+ *
+ * We want to compare the threshold with s*f - 1, if we get
+ * overflow here it is because of wacky gamma values so we
+ * turn on processing anyway.
+ */
+ png_fixed_point gtest;
+ return !png_muldiv(>est, screen_gamma, file_gamma, PNG_FP_1) ||
+ png_gamma_significant(gtest);
+}
+#endif
+
/* Initialize everything needed for the read. This includes modifying
* the palette.
*/
+
+/*For the moment 'png_init_palette_transformations' and
+ * 'png_init_rgb_transformations' only do some flag canceling optimizations.
+ * The intent is that these two routines should have palette or rgb operations
+ * extracted from 'png_init_read_transformations'.
+ */
+static void /* PRIVATE */
+png_init_palette_transformations(png_structp png_ptr)
+{
+ /* Called to handle the (input) palette case. In png_do_read_transformations
+ * the first step is to expand the palette if requested, so this code must
+ * take care to only make changes that are invariant with respect to the
+ * palette expansion, or only do them if there is no expansion.
+ *
+ * STRIP_ALPHA has already been handled in the caller (by setting num_trans
+ * to 0.)
+ */
+ int input_has_alpha = 0;
+ int input_has_transparency = 0;
+
+ if (png_ptr->num_trans > 0)
+ {
+ int i;
+
+ /* Ignore if all the entries are opaque (unlikely!) */
+ for (i=0; i<png_ptr->num_trans; ++i)
+ if (png_ptr->trans_alpha[i] == 255)
+ continue;
+ else if (png_ptr->trans_alpha[i] == 0)
+ input_has_transparency = 1;
+ else
+ input_has_alpha = 1;
+ }
+
+ /* If no alpha we can optimize. */
+ if (!input_has_alpha)
+ {
+ /* Any alpha means background and associative alpha processing is
+ * required, however if the alpha is 0 or 1 throughout OPTIIMIZE_ALPHA
+ * and ENCODE_ALPHA are irrelevant.
+ */
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+
+ if (!input_has_transparency)
+ png_ptr->transformations &= ~(PNG_COMPOSE | PNG_BACKGROUND_EXPAND);
+ }
+
+#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* png_set_background handling - deals with the complexity of whether the
+ * background color is in the file format or the screen format in the case
+ * where an 'expand' will happen.
+ */
+
+ /* The following code cannot be entered in the alpha pre-multiplication case
+ * because PNG_BACKGROUND_EXPAND is cancelled below.
+ */
+ if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ (png_ptr->transformations & PNG_EXPAND))
+ {
+ {
+ png_ptr->background.red =
+ png_ptr->palette[png_ptr->background.index].red;
+ png_ptr->background.green =
+ png_ptr->palette[png_ptr->background.index].green;
+ png_ptr->background.blue =
+ png_ptr->palette[png_ptr->background.index].blue;
+
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_ALPHA)
+ {
+ if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
+ {
+ /* Invert the alpha channel (in tRNS) unless the pixels are
+ * going to be expanded, in which case leave it for later
+ */
+ int i, istop = png_ptr->num_trans;
+
+ for (i=0; i<istop; i++)
+ png_ptr->trans_alpha[i] = (png_byte)(255 -
+ png_ptr->trans_alpha[i]);
+ }
+ }
+#endif /* PNG_READ_INVERT_ALPHA_SUPPORTED */
+ }
+ } /* background expand and (therefore) no alpha association. */
+#endif /* PNG_READ_EXPAND_SUPPORTED && PNG_READ_BACKGROUND_SUPPORTED */
+}
+
+static void /* PRIVATE */
+png_init_rgb_transformations(png_structp png_ptr)
+{
+ /* Added to libpng-1.5.4: check the color type to determine whether there
+ * is any alpha or transparency in the image and simply cancel the
+ * background and alpha mode stuff if there isn't.
+ */
+ int input_has_alpha = (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0;
+ int input_has_transparency = png_ptr->num_trans > 0;
+
+ /* If no alpha we can optimize. */
+ if (!input_has_alpha)
+ {
+ /* Any alpha means background and associative alpha processing is
+ * required, however if the alpha is 0 or 1 throughout OPTIIMIZE_ALPHA
+ * and ENCODE_ALPHA are irrelevant.
+ */
+# ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+# endif
+
+ if (!input_has_transparency)
+ png_ptr->transformations &= ~(PNG_COMPOSE | PNG_BACKGROUND_EXPAND);
+ }
+
+#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* png_set_background handling - deals with the complexity of whether the
+ * background color is in the file format or the screen format in the case
+ * where an 'expand' will happen.
+ */
+
+ /* The following code cannot be entered in the alpha pre-multiplication case
+ * because PNG_BACKGROUND_EXPAND is cancelled below.
+ */
+ if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ (png_ptr->transformations & PNG_EXPAND) &&
+ !(png_ptr->color_type & PNG_COLOR_MASK_COLOR))
+ /* i.e., GRAY or GRAY_ALPHA */
+ {
+ {
+ /* Expand background and tRNS chunks */
+ int gray = png_ptr->background.gray;
+ int trans_gray = png_ptr->trans_color.gray;
+
+ switch (png_ptr->bit_depth)
+ {
+ case 1:
+ gray *= 0xff;
+ trans_gray *= 0xff;
+ break;
+
+ case 2:
+ gray *= 0x55;
+ trans_gray *= 0x55;
+ break;
+
+ case 4:
+ gray *= 0x11;
+ trans_gray *= 0x11;
+ break;
+
+ default:
+
+ case 8:
+ /* Already 8 bits, fall through */
+
+ case 16:
+ /* Already a full 16 bits */
+ break;
+ }
+
+ png_ptr->background.red = png_ptr->background.green =
+ png_ptr->background.blue = (png_uint_16)gray;
+
+ if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
+ {
+ png_ptr->trans_color.red = png_ptr->trans_color.green =
+ png_ptr->trans_color.blue = (png_uint_16)trans_gray;
+ }
+ }
+ } /* background expand and (therefore) no alpha association. */
+#endif /* PNG_READ_EXPAND_SUPPORTED && PNG_READ_BACKGROUND_SUPPORTED */
+}
+
void /* PRIVATE */
png_init_read_transformations(png_structp png_ptr)
{
png_debug(1, "in png_init_read_transformations");
- {
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
- defined(PNG_READ_SHIFT_SUPPORTED) || \
- defined(PNG_READ_GAMMA_SUPPORTED)
- int color_type = png_ptr->color_type;
+ /* This internal function is called from png_read_start_row in pngrutil.c
+ * and it is called before the 'rowbytes' calculation is done, so the code
+ * in here can change or update the transformations flags.
+ *
+ * First do updates that do not depend on the details of the PNG image data
+ * being processed.
+ */
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ /* Prior to 1.5.4 these tests were performed from png_set_gamma, 1.5.4 adds
+ * png_set_alpha_mode and this is another source for a default file gamma so
+ * the test needs to be performed later - here. In addition prior to 1.5.4
+ * the tests were repeated for the PALETTE color type here - this is no
+ * longer necessary (and doesn't seem to have been necessary before.)
+ */
+ {
+ /* The following temporary indicates if overall gamma correction is
+ * required.
+ */
+ int gamma_correction = 0;
+
+ if (png_ptr->gamma != 0) /* has been set */
+ {
+ if (png_ptr->screen_gamma != 0) /* screen set too */
+ gamma_correction = png_gamma_threshold(png_ptr->gamma,
+ png_ptr->screen_gamma);
+
+ else
+ /* Assume the output matches the input; a long time default behavior
+ * of libpng, although the standard has nothing to say about this.
+ */
+ png_ptr->screen_gamma = png_reciprocal(png_ptr->gamma);
+ }
+
+ else if (png_ptr->screen_gamma != 0)
+ /* The converse - assume the file matches the screen, note that this
+ * perhaps undesireable default can (from 1.5.4) be changed by calling
+ * png_set_alpha_mode (even if the alpha handling mode isn't required
+ * or isn't changed from the default.)
+ */
+ png_ptr->gamma = png_reciprocal(png_ptr->screen_gamma);
+
+ else /* neither are set */
+ /* Just in case the following prevents any processing - file and screen
+ * are both assumed to be linear and there is no way to introduce a
+ * third gamma value other than png_set_background with 'UNIQUE', and,
+ * prior to 1.5.4
+ */
+ png_ptr->screen_gamma = png_ptr->gamma = PNG_FP_1;
+
+ /* Now turn the gamma transformation on or off as appropriate. Notice
+ * that PNG_GAMMA just refers to the file->screen correction. Alpha
+ * composition may independently cause gamma correction because it needs
+ * linear data (e.g. if the file has a gAMA chunk but the screen gamma
+ * hasn't been specified.) In any case this flag may get turned off in
+ * the code immediately below if the transform can be handled outside the
+ * row loop.
+ */
+ if (gamma_correction)
+ png_ptr->transformations |= PNG_GAMMA;
+
+ else
+ png_ptr->transformations &= ~PNG_GAMMA;
+ }
#endif
-#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* Certain transformations have the effect of preventing other
+ * transformations that happen afterward in png_do_read_transformations,
+ * resolve the interdependencies here. From the code of
+ * png_do_read_transformations the order is:
+ *
+ * 1) PNG_EXPAND (including PNG_EXPAND_tRNS)
+ * 2) PNG_STRIP_ALPHA (if no compose)
+ * 3) PNG_RGB_TO_GRAY
+ * 4) PNG_GRAY_TO_RGB iff !PNG_BACKGROUND_IS_GRAY
+ * 5) PNG_COMPOSE
+ * 6) PNG_GAMMA
+ * 7) PNG_STRIP_ALPHA (if compose)
+ * 8) PNG_ENCODE_ALPHA
+ * 9) PNG_SCALE_16_TO_8
+ * 10) PNG_16_TO_8
+ * 11) PNG_QUANTIZE (converts to palette)
+ * 12) PNG_EXPAND_16
+ * 13) PNG_GRAY_TO_RGB iff PNG_BACKGROUND_IS_GRAY
+ * 14) PNG_INVERT_MONO
+ * 15) PNG_SHIFT
+ * 16) PNG_PACK
+ * 17) PNG_BGR
+ * 18) PNG_PACKSWAP
+ * 19) PNG_FILLER (includes PNG_ADD_ALPHA)
+ * 20) PNG_INVERT_ALPHA
+ * 21) PNG_SWAP_ALPHA
+ * 22) PNG_SWAP_BYTES
+ * 23) PNG_USER_TRANSFORM [must be last]
+ */
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+ if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
+ !(png_ptr->transformations & PNG_COMPOSE))
+ {
+ /* Stripping the alpha channel happens immediately after the 'expand'
+ * transformations, before all other transformation, so it cancels out
+ * the alpha handling. It has the side effect negating the effect of
+ * PNG_EXPAND_tRNS too:
+ */
+ png_ptr->transformations &= ~(PNG_BACKGROUND_EXPAND | PNG_ENCODE_ALPHA |
+ PNG_EXPAND_tRNS);
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
- /* Detect gray background and attempt to enable optimization
- * for gray --> RGB case
+ /* Kill the tRNS chunk itself too. Prior to 1.5.4 this did not happen
+ * so transparency information would remain just so long as it wasn't
+ * expanded. This produces unexpected API changes if the set of things
+ * that do PNG_EXPAND_tRNS changes (perfectly possible given the
+ * documentation - which says ask for what you want, accept what you
+ * get.) This makes the behavior consistent from 1.5.4:
+ */
+ png_ptr->num_trans = 0;
+ }
+#endif /* STRIP_ALPHA supported, no COMPOSE */
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ /* If the screen gamma is about 1.0 then the OPTIMIZE_ALPHA and ENCODE_ALPHA
+ * settings will have no effect.
+ */
+ if (!png_gamma_significant(png_ptr->screen_gamma))
+ {
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+ }
+#endif
+
+#if defined(PNG_READ_EXPAND_SUPPORTED) && \
+ defined(PNG_READ_BACKGROUND_SUPPORTED) && \
+ defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
+ /* Detect gray background and attempt to enable optimization for
+ * gray --> RGB case.
*
* Note: if PNG_BACKGROUND_EXPAND is set and color_type is either RGB or
* RGB_ALPHA (in which case need_expand is superfluous anyway), the
@@ -795,144 +1388,174 @@
* This is not a problem for the current code, which uses
* PNG_BACKGROUND_IS_GRAY only to decide when to do the
* png_do_gray_to_rgb() transformation.
+ *
+ * TODO: this code needs to be revised to avoid the complexity and
+ * interdependencies. The color type of the background should be recorded in
+ * png_set_background, along with the bit depth, then the code has a record
+ * of exactly what color space the background is currently in.
*/
- if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
- !(color_type & PNG_COLOR_MASK_COLOR))
+ if (png_ptr->transformations & PNG_BACKGROUND_EXPAND)
{
- png_ptr->mode |= PNG_BACKGROUND_IS_GRAY;
- } else if ((png_ptr->transformations & PNG_BACKGROUND) &&
- !(png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
- (png_ptr->transformations & PNG_GRAY_TO_RGB) &&
- png_ptr->background.red == png_ptr->background.green &&
- png_ptr->background.red == png_ptr->background.blue)
- {
- png_ptr->mode |= PNG_BACKGROUND_IS_GRAY;
- png_ptr->background.gray = png_ptr->background.red;
+ /* PNG_BACKGROUND_EXPAND: the background is in the file color space, so if
+ * the file was grayscale the background value is gray.
+ */
+ if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR))
+ png_ptr->mode |= PNG_BACKGROUND_IS_GRAY;
}
-#endif
- if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
- (png_ptr->transformations & PNG_EXPAND))
+ else if (png_ptr->transformations & PNG_COMPOSE)
{
- if (!(color_type & PNG_COLOR_MASK_COLOR)) /* i.e., GRAY or GRAY_ALPHA */
+ /* PNG_COMPOSE: png_set_background was called with need_expand false,
+ * so the color is in the color space of the output or png_set_alpha_mode
+ * was called and the color is black. Ignore RGB_TO_GRAY because that
+ * happens before GRAY_TO_RGB.
+ */
+ if (png_ptr->transformations & PNG_GRAY_TO_RGB)
{
- /* Expand background and tRNS chunks */
- switch (png_ptr->bit_depth)
+ if (png_ptr->background.red == png_ptr->background.green &&
+ png_ptr->background.red == png_ptr->background.blue)
{
- case 1:
- png_ptr->background.gray *= (png_uint_16)0xff;
- png_ptr->background.red = png_ptr->background.green
- = png_ptr->background.blue = png_ptr->background.gray;
- if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
- {
- png_ptr->trans_color.gray *= (png_uint_16)0xff;
- png_ptr->trans_color.red = png_ptr->trans_color.green
- = png_ptr->trans_color.blue = png_ptr->trans_color.gray;
- }
- break;
-
- case 2:
- png_ptr->background.gray *= (png_uint_16)0x55;
- png_ptr->background.red = png_ptr->background.green
- = png_ptr->background.blue = png_ptr->background.gray;
- if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
- {
- png_ptr->trans_color.gray *= (png_uint_16)0x55;
- png_ptr->trans_color.red = png_ptr->trans_color.green
- = png_ptr->trans_color.blue = png_ptr->trans_color.gray;
- }
- break;
-
- case 4:
- png_ptr->background.gray *= (png_uint_16)0x11;
- png_ptr->background.red = png_ptr->background.green
- = png_ptr->background.blue = png_ptr->background.gray;
- if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
- {
- png_ptr->trans_color.gray *= (png_uint_16)0x11;
- png_ptr->trans_color.red = png_ptr->trans_color.green
- = png_ptr->trans_color.blue = png_ptr->trans_color.gray;
- }
- break;
-
- default:
-
- case 8:
-
- case 16:
- png_ptr->background.red = png_ptr->background.green
- = png_ptr->background.blue = png_ptr->background.gray;
- break;
+ png_ptr->mode |= PNG_BACKGROUND_IS_GRAY;
+ png_ptr->background.gray = png_ptr->background.red;
}
}
- else if (color_type == PNG_COLOR_TYPE_PALETTE)
- {
- png_ptr->background.red =
- png_ptr->palette[png_ptr->background.index].red;
- png_ptr->background.green =
- png_ptr->palette[png_ptr->background.index].green;
- png_ptr->background.blue =
- png_ptr->palette[png_ptr->background.index].blue;
-
-#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
- if (png_ptr->transformations & PNG_INVERT_ALPHA)
- {
-#ifdef PNG_READ_EXPAND_SUPPORTED
- if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
-#endif
- {
- /* Invert the alpha channel (in tRNS) unless the pixels are
- * going to be expanded, in which case leave it for later
- */
- int i, istop;
- istop=(int)png_ptr->num_trans;
- for (i=0; i<istop; i++)
- png_ptr->trans_alpha[i] = (png_byte)(255 - png_ptr->trans_alpha[i]);
- }
- }
-#endif
-
- }
}
-#endif
+#endif /* PNG_READ_GRAY_TO_RGB_SUPPORTED (etc) */
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) && defined(PNG_READ_GAMMA_SUPPORTED)
- png_ptr->background_1 = png_ptr->background;
-#endif
-#if defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
+ /* For indexed PNG data (PNG_COLOR_TYPE_PALETTE) many of the transformations
+ * can be performed directly on the palette, and some (such as rgb to gray)
+ * can be optimized inside the palette. This is particularly true of the
+ * composite (background and alpha) stuff, which can be pretty much all done
+ * in the palette even if the result is expanded to RGB or gray afterward.
+ *
+ * NOTE: this is Not Yet Implemented, the code behaves as in 1.5.1 and
+ * earlier and the palette stuff is actually handled on the first row. This
+ * leads to the reported bug that the palette returned by png_get_PLTE is not
+ * updated.
+ */
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ png_init_palette_transformations(png_ptr);
- if ((color_type == PNG_COLOR_TYPE_PALETTE && png_ptr->num_trans != 0)
- && (fabs(png_ptr->screen_gamma * png_ptr->gamma - 1.0)
- < PNG_GAMMA_THRESHOLD))
+ else
+ png_init_rgb_transformations(png_ptr);
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
+ defined(PNG_READ_EXPAND_16_SUPPORTED)
+ if ((png_ptr->transformations & PNG_EXPAND_16) &&
+ (png_ptr->transformations & PNG_COMPOSE) &&
+ !(png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ png_ptr->bit_depth != 16)
{
- int i, k;
- k=0;
- for (i=0; i<png_ptr->num_trans; i++)
- {
- if (png_ptr->trans_alpha[i] != 0 && png_ptr->trans_alpha[i] != 0xff)
- k=1; /* Partial transparency is present */
- }
- if (k == 0)
- png_ptr->transformations &= ~PNG_GAMMA;
+ /* TODO: fix this. Because the expand_16 operation is after the compose
+ * handling the background color must be 8, not 16, bits deep, but the
+ * application will supply a 16-bit value so reduce it here.
+ *
+ * The PNG_BACKGROUND_EXPAND code above does not expand to 16 bits at
+ * present, so that case is ok (until do_expand_16 is moved.)
+ *
+ * NOTE: this discards the low 16 bits of the user supplied background
+ * color, but until expand_16 works properly there is no choice!
+ */
+# define CHOP(x) (x)=((png_uint_16)(((png_uint_32)(x)*255+32895) >> 16))
+ CHOP(png_ptr->background.red);
+ CHOP(png_ptr->background.green);
+ CHOP(png_ptr->background.blue);
+ CHOP(png_ptr->background.gray);
+# undef CHOP
}
+#endif /* PNG_READ_BACKGROUND_SUPPORTED && PNG_READ_EXPAND_16_SUPPORTED */
- if ((png_ptr->transformations & (PNG_GAMMA | PNG_RGB_TO_GRAY)) &&
- png_ptr->gamma != 0.0)
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
+ (defined(PNG_READ_SCALE_16_TO_8_SUPPORTED) || \
+ defined(PNG_READ_STRIP_16_TO_8_SUPPORTED))
+ if ((png_ptr->transformations & (PNG_16_TO_8|PNG_SCALE_16_TO_8)) &&
+ (png_ptr->transformations & PNG_COMPOSE) &&
+ !(png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ png_ptr->bit_depth == 16)
+ {
+ /* On the other hand, if a 16-bit file is to be reduced to 8-bits per
+ * component this will also happen after PNG_COMPOSE and so the background
+ * color must be pre-expanded here.
+ *
+ * TODO: fix this too.
+ */
+ png_ptr->background.red = (png_uint_16)(png_ptr->background.red * 257);
+ png_ptr->background.green =
+ (png_uint_16)(png_ptr->background.green * 257);
+ png_ptr->background.blue = (png_uint_16)(png_ptr->background.blue * 257);
+ png_ptr->background.gray = (png_uint_16)(png_ptr->background.gray * 257);
+ }
+#endif
+
+ /* NOTE: below 'PNG_READ_ALPHA_MODE_SUPPORTED' is presumed to also enable the
+ * background support (see the comments in scripts/pnglibconf.dfa), this
+ * allows pre-multiplication of the alpha channel to be implemented as
+ * compositing on black. This is probably sub-optimal and has been done in
+ * 1.5.4 betas simply to enable external critique and testing (i.e. to
+ * implement the new API quickly, without lots of internal changes.)
+ */
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+# ifdef PNG_READ_BACKGROUND_SUPPORTED
+ /* Includes ALPHA_MODE */
+ png_ptr->background_1 = png_ptr->background;
+# endif
+
+ /* This needs to change - in the palette image case a whole set of tables are
+ * built when it would be quicker to just calculate the correct value for
+ * each palette entry directly. Also, the test is too tricky - why check
+ * PNG_RGB_TO_GRAY if PNG_GAMMA is not set? The answer seems to be that
+ * PNG_GAMMA is cancelled even if the gamma is known? The test excludes the
+ * PNG_COMPOSE case, so apparently if there is no *overall* gamma correction
+ * the gamma tables will not be built even if composition is required on a
+ * gamma encoded value.
+ *
+ * In 1.5.4 this is addressed below by an additional check on the individual
+ * file gamma - if it is not 1.0 both RGB_TO_GRAY and COMPOSE need the
+ * tables.
+ */
+ if ((png_ptr->transformations & PNG_GAMMA)
+ || ((png_ptr->transformations & PNG_RGB_TO_GRAY)
+ && (png_gamma_significant(png_ptr->gamma) ||
+ png_gamma_significant(png_ptr->screen_gamma)))
+ || ((png_ptr->transformations & PNG_COMPOSE)
+ && (png_gamma_significant(png_ptr->gamma)
+ || png_gamma_significant(png_ptr->screen_gamma)
+# ifdef PNG_READ_BACKGROUND_SUPPORTED
+ || (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_UNIQUE
+ && png_gamma_significant(png_ptr->background_gamma))
+# endif
+ )) || ((png_ptr->transformations & PNG_ENCODE_ALPHA)
+ && png_gamma_significant(png_ptr->screen_gamma))
+ )
{
png_build_gamma_table(png_ptr, png_ptr->bit_depth);
#ifdef PNG_READ_BACKGROUND_SUPPORTED
- if (png_ptr->transformations & PNG_BACKGROUND)
+ if (png_ptr->transformations & PNG_COMPOSE)
{
- if (color_type == PNG_COLOR_TYPE_PALETTE)
+ /* Issue a warning about this combination: because RGB_TO_GRAY is
+ * optimized to do the gamma transform if present yet do_background has
+ * to do the same thing if both options are set a
+ * double-gamma-correction happens. This is true in all versions of
+ * libpng to date.
+ */
+ if (png_ptr->transformations & PNG_RGB_TO_GRAY)
+ png_warning(png_ptr,
+ "libpng does not support gamma+background+rgb_to_gray");
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
- /* Could skip if no transparency */
+ /* We don't get to here unless there is a tRNS chunk with non-opaque
+ * entries - see the checking code at the start of this function.
+ */
png_color back, back_1;
png_colorp palette = png_ptr->palette;
int num_palette = png_ptr->num_palette;
int i;
if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_FILE)
{
+
back.red = png_ptr->gamma_table[png_ptr->background.red];
back.green = png_ptr->gamma_table[png_ptr->background.green];
back.blue = png_ptr->gamma_table[png_ptr->background.blue];
@@ -943,57 +1566,71 @@
}
else
{
- double g, gs;
+ png_fixed_point g, gs;
switch (png_ptr->background_gamma_type)
{
case PNG_BACKGROUND_GAMMA_SCREEN:
g = (png_ptr->screen_gamma);
- gs = 1.0;
+ gs = PNG_FP_1;
break;
case PNG_BACKGROUND_GAMMA_FILE:
- g = 1.0 / (png_ptr->gamma);
- gs = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma);
+ g = png_reciprocal(png_ptr->gamma);
+ gs = png_reciprocal2(png_ptr->gamma,
+ png_ptr->screen_gamma);
break;
case PNG_BACKGROUND_GAMMA_UNIQUE:
- g = 1.0 / (png_ptr->background_gamma);
- gs = 1.0 / (png_ptr->background_gamma *
- png_ptr->screen_gamma);
+ g = png_reciprocal(png_ptr->background_gamma);
+ gs = png_reciprocal2(png_ptr->background_gamma,
+ png_ptr->screen_gamma);
break;
default:
- g = 1.0; /* back_1 */
- gs = 1.0; /* back */
+ g = PNG_FP_1; /* back_1 */
+ gs = PNG_FP_1; /* back */
+ break;
}
- if ( fabs(gs - 1.0) < PNG_GAMMA_THRESHOLD)
+ if (png_gamma_significant(gs))
+ {
+ back.red = png_gamma_8bit_correct(png_ptr->background.red,
+ gs);
+ back.green = png_gamma_8bit_correct(png_ptr->background.green,
+ gs);
+ back.blue = png_gamma_8bit_correct(png_ptr->background.blue,
+ gs);
+ }
+
+ else
{
back.red = (png_byte)png_ptr->background.red;
back.green = (png_byte)png_ptr->background.green;
back.blue = (png_byte)png_ptr->background.blue;
}
- else
+
+ if (png_gamma_significant(g))
{
- back.red = (png_byte)(pow(
- (double)png_ptr->background.red/255.0, gs) * 255.0 + .5);
- back.green = (png_byte)(pow(
- (double)png_ptr->background.green/255.0, gs) * 255.0
- + .5);
- back.blue = (png_byte)(pow(
- (double)png_ptr->background.blue/255.0, gs) * 255.0 + .5);
+ back_1.red = png_gamma_8bit_correct(png_ptr->background.red,
+ g);
+ back_1.green = png_gamma_8bit_correct(
+ png_ptr->background.green, g);
+ back_1.blue = png_gamma_8bit_correct(png_ptr->background.blue,
+ g);
}
- back_1.red = (png_byte)(pow(
- (double)png_ptr->background.red/255.0, g) * 255.0 + .5);
- back_1.green = (png_byte)(pow(
- (double)png_ptr->background.green/255.0, g) * 255.0 + .5);
- back_1.blue = (png_byte)(pow(
- (double)png_ptr->background.blue/255.0, g) * 255.0 + .5);
+ else
+ {
+ back_1.red = (png_byte)png_ptr->background.red;
+ back_1.green = (png_byte)png_ptr->background.green;
+ back_1.blue = (png_byte)png_ptr->background.blue;
+ }
}
+
for (i = 0; i < num_palette; i++)
{
- if (i < (int)png_ptr->num_trans && png_ptr->trans_alpha[i] != 0xff)
+ if (i < (int)png_ptr->num_trans &&
+ png_ptr->trans_alpha[i] != 0xff)
{
if (png_ptr->trans_alpha[i] == 0)
{
@@ -1023,87 +1660,119 @@
palette[i].blue = png_ptr->gamma_table[palette[i].blue];
}
}
- /* Prevent the transformations being done again, and make sure
- * that the now spurious alpha channel is stripped - the code
- * has just reduced background composition and gamma correction
- * to a simple alpha channel strip.
+
+ /* Prevent the transformations being done again.
+ *
+ * NOTE: this is highly dubious; it removes the transformations in
+ * place. This seems inconsistent with the general treatment of the
+ * transformations elsewhere.
*/
- png_ptr->transformations &= ~PNG_BACKGROUND;
- png_ptr->transformations &= ~PNG_GAMMA;
- png_ptr->flags |= PNG_FLAG_STRIP_ALPHA;
- }
+ png_ptr->transformations &= ~(PNG_COMPOSE | PNG_GAMMA);
+ } /* color_type == PNG_COLOR_TYPE_PALETTE */
+
/* if (png_ptr->background_gamma_type!=PNG_BACKGROUND_GAMMA_UNKNOWN) */
- else
- /* color_type != PNG_COLOR_TYPE_PALETTE */
+ else /* color_type != PNG_COLOR_TYPE_PALETTE */
{
- double m = (double)(((png_uint_32)1 << png_ptr->bit_depth) - 1);
- double g = 1.0;
- double gs = 1.0;
+ int gs_sig, g_sig;
+ png_fixed_point g = PNG_FP_1; /* Correction to linear */
+ png_fixed_point gs = PNG_FP_1; /* Correction to screen */
switch (png_ptr->background_gamma_type)
{
case PNG_BACKGROUND_GAMMA_SCREEN:
- g = (png_ptr->screen_gamma);
- gs = 1.0;
+ g = png_ptr->screen_gamma;
+ /* gs = PNG_FP_1; */
break;
case PNG_BACKGROUND_GAMMA_FILE:
- g = 1.0 / (png_ptr->gamma);
- gs = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma);
+ g = png_reciprocal(png_ptr->gamma);
+ gs = png_reciprocal2(png_ptr->gamma, png_ptr->screen_gamma);
break;
case PNG_BACKGROUND_GAMMA_UNIQUE:
- g = 1.0 / (png_ptr->background_gamma);
- gs = 1.0 / (png_ptr->background_gamma *
- png_ptr->screen_gamma);
+ g = png_reciprocal(png_ptr->background_gamma);
+ gs = png_reciprocal2(png_ptr->background_gamma,
+ png_ptr->screen_gamma);
break;
default:
png_error(png_ptr, "invalid background gamma type");
}
- png_ptr->background_1.gray = (png_uint_16)(pow(
- (double)png_ptr->background.gray / m, g) * m + .5);
- png_ptr->background.gray = (png_uint_16)(pow(
- (double)png_ptr->background.gray / m, gs) * m + .5);
+ g_sig = png_gamma_significant(g);
+ gs_sig = png_gamma_significant(gs);
+
+ if (g_sig)
+ png_ptr->background_1.gray = png_gamma_correct(png_ptr,
+ png_ptr->background.gray, g);
+
+ if (gs_sig)
+ png_ptr->background.gray = png_gamma_correct(png_ptr,
+ png_ptr->background.gray, gs);
if ((png_ptr->background.red != png_ptr->background.green) ||
(png_ptr->background.red != png_ptr->background.blue) ||
(png_ptr->background.red != png_ptr->background.gray))
{
/* RGB or RGBA with color background */
- png_ptr->background_1.red = (png_uint_16)(pow(
- (double)png_ptr->background.red / m, g) * m + .5);
- png_ptr->background_1.green = (png_uint_16)(pow(
- (double)png_ptr->background.green / m, g) * m + .5);
- png_ptr->background_1.blue = (png_uint_16)(pow(
- (double)png_ptr->background.blue / m, g) * m + .5);
- png_ptr->background.red = (png_uint_16)(pow(
- (double)png_ptr->background.red / m, gs) * m + .5);
- png_ptr->background.green = (png_uint_16)(pow(
- (double)png_ptr->background.green / m, gs) * m + .5);
- png_ptr->background.blue = (png_uint_16)(pow(
- (double)png_ptr->background.blue / m, gs) * m + .5);
+ if (g_sig)
+ {
+ png_ptr->background_1.red = png_gamma_correct(png_ptr,
+ png_ptr->background.red, g);
+
+ png_ptr->background_1.green = png_gamma_correct(png_ptr,
+ png_ptr->background.green, g);
+
+ png_ptr->background_1.blue = png_gamma_correct(png_ptr,
+ png_ptr->background.blue, g);
+ }
+
+ if (gs_sig)
+ {
+ png_ptr->background.red = png_gamma_correct(png_ptr,
+ png_ptr->background.red, gs);
+
+ png_ptr->background.green = png_gamma_correct(png_ptr,
+ png_ptr->background.green, gs);
+
+ png_ptr->background.blue = png_gamma_correct(png_ptr,
+ png_ptr->background.blue, gs);
+ }
}
+
else
{
/* GRAY, GRAY ALPHA, RGB, or RGBA with gray background */
png_ptr->background_1.red = png_ptr->background_1.green
- = png_ptr->background_1.blue = png_ptr->background_1.gray;
+ = png_ptr->background_1.blue = png_ptr->background_1.gray;
+
png_ptr->background.red = png_ptr->background.green
- = png_ptr->background.blue = png_ptr->background.gray;
+ = png_ptr->background.blue = png_ptr->background.gray;
}
- }
- }
+
+ /* The background is now in screen gamma: */
+ png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_SCREEN;
+ } /* color_type != PNG_COLOR_TYPE_PALETTE */
+ }/* png_ptr->transformations & PNG_BACKGROUND */
+
else
/* Transformation does not include PNG_BACKGROUND */
#endif /* PNG_READ_BACKGROUND_SUPPORTED */
- if (color_type == PNG_COLOR_TYPE_PALETTE)
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ /* RGB_TO_GRAY needs to have non-gamma-corrected values! */
+ && ((png_ptr->transformations & PNG_EXPAND) == 0 ||
+ (png_ptr->transformations & PNG_RGB_TO_GRAY) == 0)
+#endif
+ )
{
png_colorp palette = png_ptr->palette;
int num_palette = png_ptr->num_palette;
int i;
+ /*NOTE: there are other transformations that should probably be in here
+ * too.
+ */
for (i = 0; i < num_palette; i++)
{
palette[i].red = png_ptr->gamma_table[palette[i].red];
@@ -1113,16 +1782,17 @@
/* Done the gamma correction. */
png_ptr->transformations &= ~PNG_GAMMA;
- }
+ } /* color_type == PALETTE && !PNG_BACKGROUND transformation */
}
#ifdef PNG_READ_BACKGROUND_SUPPORTED
else
#endif
-#endif /* PNG_READ_GAMMA_SUPPORTED && PNG_FLOATING_POINT_SUPPORTED */
+#endif /* PNG_READ_GAMMA_SUPPORTED */
+
#ifdef PNG_READ_BACKGROUND_SUPPORTED
- /* No GAMMA transformation */
- if ((png_ptr->transformations & PNG_BACKGROUND) &&
- (color_type == PNG_COLOR_TYPE_PALETTE))
+ /* No GAMMA transformation (see the hanging else 4 lines above) */
+ if ((png_ptr->transformations & PNG_COMPOSE) &&
+ (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE))
{
int i;
int istop = (int)png_ptr->num_trans;
@@ -1139,54 +1809,64 @@
{
palette[i] = back;
}
+
else if (png_ptr->trans_alpha[i] != 0xff)
{
/* The png_composite() macro is defined in png.h */
png_composite(palette[i].red, palette[i].red,
- png_ptr->trans_alpha[i], back.red);
+ png_ptr->trans_alpha[i], back.red);
+
png_composite(palette[i].green, palette[i].green,
- png_ptr->trans_alpha[i], back.green);
+ png_ptr->trans_alpha[i], back.green);
+
png_composite(palette[i].blue, palette[i].blue,
- png_ptr->trans_alpha[i], back.blue);
+ png_ptr->trans_alpha[i], back.blue);
}
}
- /* Handled alpha, still need to strip the channel. */
- png_ptr->transformations &= ~PNG_BACKGROUND;
- png_ptr->flags |= PNG_FLAG_STRIP_ALPHA;
+ png_ptr->transformations &= ~PNG_COMPOSE;
}
#endif /* PNG_READ_BACKGROUND_SUPPORTED */
#ifdef PNG_READ_SHIFT_SUPPORTED
if ((png_ptr->transformations & PNG_SHIFT) &&
- (color_type == PNG_COLOR_TYPE_PALETTE))
+ (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE))
{
- png_uint_16 i;
- png_uint_16 istop = png_ptr->num_palette;
- int sr = 8 - png_ptr->sig_bit.red;
- int sg = 8 - png_ptr->sig_bit.green;
- int sb = 8 - png_ptr->sig_bit.blue;
+ int i;
+ int istop = png_ptr->num_palette;
+ int shift = 8 - png_ptr->sig_bit.red;
- if (sr < 0 || sr > 8)
- sr = 0;
- if (sg < 0 || sg > 8)
- sg = 0;
- if (sb < 0 || sb > 8)
- sb = 0;
- for (i = 0; i < istop; i++)
+ /* significant bits can be in the range 1 to 7 for a meaninful result, if
+ * the number of significant bits is 0 then no shift is done (this is an
+ * error condition which is silently ignored.)
+ */
+ if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
{
- png_ptr->palette[i].red >>= sr;
- png_ptr->palette[i].green >>= sg;
- png_ptr->palette[i].blue >>= sb;
+ int component = png_ptr->palette[i].red;
+
+ component >>= shift;
+ png_ptr->palette[i].red = (png_byte)component;
+ }
+
+ shift = 8 - png_ptr->sig_bit.green;
+ if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
+ {
+ int component = png_ptr->palette[i].green;
+
+ component >>= shift;
+ png_ptr->palette[i].green = (png_byte)component;
+ }
+
+ shift = 8 - png_ptr->sig_bit.blue;
+ if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
+ {
+ int component = png_ptr->palette[i].blue;
+
+ component >>= shift;
+ png_ptr->palette[i].blue = (png_byte)component;
}
}
#endif /* PNG_READ_SHIFT_SUPPORTED */
- }
-#if !defined(PNG_READ_GAMMA_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED) \
- && !defined(PNG_READ_BACKGROUND_SUPPORTED)
- if (png_ptr)
- return;
-#endif
}
/* Modify the info structure to reflect the transformations. The
@@ -1203,10 +1883,16 @@
{
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
- if (png_ptr->num_trans)
+ /* This check must match what actually happens in
+ * png_do_expand_palette; if it ever checks the tRNS chunk to see if
+ * it is all opaque we must do the same (at present it does not.)
+ */
+ if (png_ptr->num_trans > 0)
info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+
else
info_ptr->color_type = PNG_COLOR_TYPE_RGB;
+
info_ptr->bit_depth = 8;
info_ptr->num_trans = 0;
}
@@ -1215,49 +1901,82 @@
if (png_ptr->num_trans)
{
if (png_ptr->transformations & PNG_EXPAND_tRNS)
- info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
+ info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
}
if (info_ptr->bit_depth < 8)
info_ptr->bit_depth = 8;
+
info_ptr->num_trans = 0;
}
}
#endif
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
- if (png_ptr->transformations & PNG_BACKGROUND)
- {
- info_ptr->color_type &= ~PNG_COLOR_MASK_ALPHA;
- info_ptr->num_trans = 0;
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+ /* The following is almost certainly wrong unless the background value is in
+ * the screen space!
+ */
+ if (png_ptr->transformations & PNG_COMPOSE)
info_ptr->background = png_ptr->background;
- }
#endif
#ifdef PNG_READ_GAMMA_SUPPORTED
- if (png_ptr->transformations & PNG_GAMMA)
- {
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- info_ptr->gamma = png_ptr->gamma;
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
- info_ptr->int_gamma = png_ptr->int_gamma;
-#endif
- }
+ /* The following used to be conditional on PNG_GAMMA (prior to 1.5.4),
+ * however it seems that the code in png_init_read_transformations, which has
+ * been called before this from png_read_update_info->png_read_start_row
+ * sometimes does the gamma transform and cancels the flag.
+ */
+ info_ptr->gamma = png_ptr->gamma;
#endif
-#ifdef PNG_READ_16_TO_8_SUPPORTED
- if ((png_ptr->transformations & PNG_16_TO_8) && (info_ptr->bit_depth == 16))
- info_ptr->bit_depth = 8;
-#endif
+ if (info_ptr->bit_depth == 16)
+ {
+# ifdef PNG_READ_16BIT_SUPPORTED
+# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ if (png_ptr->transformations & PNG_SCALE_16_TO_8)
+ info_ptr->bit_depth = 8;
+# endif
+
+# ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+ if (png_ptr->transformations & PNG_16_TO_8)
+ info_ptr->bit_depth = 8;
+# endif
+
+# else
+ /* No 16 bit support: force chopping 16-bit input down to 8, in this case
+ * the app program can chose if both APIs are available by setting the
+ * correct scaling to use.
+ */
+# ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+ /* For compatibility with previous versions use the strip method by
+ * default. This code works because if PNG_SCALE_16_TO_8 is already
+ * set the code below will do that in preference to the chop.
+ */
+ png_ptr->transformations |= PNG_16_TO_8;
+ info_ptr->bit_depth = 8;
+# else
+
+# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ png_ptr->transformations |= PNG_SCALE_16_TO_8;
+ info_ptr->bit_depth = 8;
+# else
+
+ CONFIGURATION ERROR: you must enable at least one 16 to 8 method
+# endif
+# endif
+#endif /* !READ_16BIT_SUPPORTED */
+ }
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
if (png_ptr->transformations & PNG_GRAY_TO_RGB)
- info_ptr->color_type |= PNG_COLOR_MASK_COLOR;
+ info_ptr->color_type = (png_byte)(info_ptr->color_type |
+ PNG_COLOR_MASK_COLOR);
#endif
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
if (png_ptr->transformations & PNG_RGB_TO_GRAY)
- info_ptr->color_type &= ~PNG_COLOR_MASK_COLOR;
+ info_ptr->color_type = (png_byte)(info_ptr->color_type &
+ ~PNG_COLOR_MASK_COLOR);
#endif
#ifdef PNG_READ_QUANTIZE_SUPPORTED
@@ -1272,6 +1991,14 @@
}
#endif
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+ if (png_ptr->transformations & PNG_EXPAND_16 && info_ptr->bit_depth == 8 &&
+ info_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ info_ptr->bit_depth = 16;
+ }
+#endif
+
#ifdef PNG_READ_PACK_SUPPORTED
if ((png_ptr->transformations & PNG_PACK) && (info_ptr->bit_depth < 8))
info_ptr->bit_depth = 8;
@@ -1279,14 +2006,20 @@
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
info_ptr->channels = 1;
+
else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
info_ptr->channels = 3;
+
else
info_ptr->channels = 1;
#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
- if (png_ptr->flags & PNG_FLAG_STRIP_ALPHA)
- info_ptr->color_type &= ~PNG_COLOR_MASK_ALPHA;
+ if (png_ptr->transformations & PNG_STRIP_ALPHA)
+ {
+ info_ptr->color_type = (png_byte)(info_ptr->color_type &
+ ~PNG_COLOR_MASK_ALPHA);
+ info_ptr->num_trans = 0;
+ }
#endif
if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
@@ -1301,26 +2034,35 @@
info_ptr->channels++;
/* If adding a true alpha channel not just filler */
if (png_ptr->transformations & PNG_ADD_ALPHA)
- info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
+ info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
}
#endif
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) && \
defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
if (png_ptr->transformations & PNG_USER_TRANSFORM)
- {
- if (info_ptr->bit_depth < png_ptr->user_transform_depth)
+ {
+ if (info_ptr->bit_depth < png_ptr->user_transform_depth)
info_ptr->bit_depth = png_ptr->user_transform_depth;
- if (info_ptr->channels < png_ptr->user_transform_channels)
+
+ if (info_ptr->channels < png_ptr->user_transform_channels)
info_ptr->channels = png_ptr->user_transform_channels;
- }
+ }
#endif
info_ptr->pixel_depth = (png_byte)(info_ptr->channels *
- info_ptr->bit_depth);
+ info_ptr->bit_depth);
info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, info_ptr->width);
+ /* Adding in 1.5.4: cache the above value in png_struct so that we can later
+ * check in png_rowbytes that the user buffer won't get overwritten. Note
+ * that the field is not always set - if png_read_update_info isn't called
+ * the application has to either not do any transforms or get the calculation
+ * right itself.
+ */
+ png_ptr->info_rowbytes = info_ptr->rowbytes;
+
#ifndef PNG_READ_EXPAND_SUPPORTED
if (png_ptr)
return;
@@ -1332,75 +2074,80 @@
* decide how it fits in with the other transformations here.
*/
void /* PRIVATE */
-png_do_read_transformations(png_structp png_ptr)
+png_do_read_transformations(png_structp png_ptr, png_row_infop row_info)
{
png_debug(1, "in png_do_read_transformations");
if (png_ptr->row_buf == NULL)
{
-#ifdef PNG_STDIO_SUPPORTED
- char msg[50];
-
- png_snprintf2(msg, 50,
- "NULL row buffer for row %ld, pass %d", (long)png_ptr->row_number,
- png_ptr->pass);
- png_error(png_ptr, msg);
-#else
- png_error(png_ptr, "NULL row buffer");
-#endif
- }
-#ifdef PNG_WARN_UNINITIALIZED_ROW
- if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
- /* Application has failed to call either png_read_start_image()
- * or png_read_update_info() after setting transforms that expand
- * pixels. This check added to libpng-1.2.19
+ /* Prior to 1.5.4 this output row/pass where the NULL pointer is, but this
+ * error is incredibly rare and incredibly easy to debug without this
+ * information.
*/
-#if (PNG_WARN_UNINITIALIZED_ROW==1)
+ png_error(png_ptr, "NULL row buffer");
+ }
+
+ /* The following is debugging; prior to 1.5.4 the code was never compiled in;
+ * in 1.5.4 PNG_FLAG_DETECT_UNINITIALIZED was added and the macro
+ * PNG_WARN_UNINITIALIZED_ROW removed. In 1.5 the new flag is set only for
+ * selected new APIs to ensure that there is no API change.
+ */
+ if ((png_ptr->flags & PNG_FLAG_DETECT_UNINITIALIZED) != 0 &&
+ !(png_ptr->flags & PNG_FLAG_ROW_INIT))
+ {
+ /* Application has failed to call either png_read_start_image() or
+ * png_read_update_info() after setting transforms that expand pixels.
+ * This check added to libpng-1.2.19 (but not enabled until 1.5.4).
+ */
png_error(png_ptr, "Uninitialized row");
-#else
- png_warning(png_ptr, "Uninitialized row");
-#endif
-#endif
+ }
#ifdef PNG_READ_EXPAND_SUPPORTED
if (png_ptr->transformations & PNG_EXPAND)
{
- if (png_ptr->row_info.color_type == PNG_COLOR_TYPE_PALETTE)
+ if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)
{
- png_do_expand_palette(&(png_ptr->row_info), png_ptr->row_buf + 1,
- png_ptr->palette, png_ptr->trans_alpha, png_ptr->num_trans);
+ png_do_expand_palette(row_info, png_ptr->row_buf + 1,
+ png_ptr->palette, png_ptr->trans_alpha, png_ptr->num_trans);
}
+
else
{
if (png_ptr->num_trans &&
(png_ptr->transformations & PNG_EXPAND_tRNS))
- png_do_expand(&(png_ptr->row_info), png_ptr->row_buf + 1,
- &(png_ptr->trans_color));
+ png_do_expand(row_info, png_ptr->row_buf + 1,
+ &(png_ptr->trans_color));
+
else
- png_do_expand(&(png_ptr->row_info), png_ptr->row_buf + 1,
- NULL);
+ png_do_expand(row_info, png_ptr->row_buf + 1,
+ NULL);
}
}
#endif
#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
- if (png_ptr->flags & PNG_FLAG_STRIP_ALPHA)
- png_do_strip_filler(&(png_ptr->row_info), png_ptr->row_buf + 1,
- PNG_FLAG_FILLER_AFTER | (png_ptr->flags & PNG_FLAG_STRIP_ALPHA));
+ if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
+ !(png_ptr->transformations & PNG_COMPOSE) &&
+ (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
+ row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA))
+ png_do_strip_channel(row_info, png_ptr->row_buf + 1,
+ 0 /* at_start == false, because SWAP_ALPHA happens later */);
#endif
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
if (png_ptr->transformations & PNG_RGB_TO_GRAY)
{
int rgb_error =
- png_do_rgb_to_gray(png_ptr, &(png_ptr->row_info),
- png_ptr->row_buf + 1);
+ png_do_rgb_to_gray(png_ptr, row_info,
+ png_ptr->row_buf + 1);
+
if (rgb_error)
{
png_ptr->rgb_to_gray_status=1;
if ((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
PNG_RGB_TO_GRAY_WARN)
png_warning(png_ptr, "png_do_rgb_to_gray found nongray pixel");
+
if ((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
PNG_RGB_TO_GRAY_ERR)
png_error(png_ptr, "png_do_rgb_to_gray found nongray pixel");
@@ -1445,105 +2192,141 @@
*/
if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
!(png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
- png_do_gray_to_rgb(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1);
#endif
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
- if ((png_ptr->transformations & PNG_BACKGROUND) &&
- ((png_ptr->num_trans != 0 ) ||
- (png_ptr->color_type & PNG_COLOR_MASK_ALPHA)))
- png_do_background(&(png_ptr->row_info), png_ptr->row_buf + 1,
- &(png_ptr->trans_color), &(png_ptr->background)
-#ifdef PNG_READ_GAMMA_SUPPORTED
- , &(png_ptr->background_1),
- png_ptr->gamma_table, png_ptr->gamma_from_1,
- png_ptr->gamma_to_1, png_ptr->gamma_16_table,
- png_ptr->gamma_16_from_1, png_ptr->gamma_16_to_1,
- png_ptr->gamma_shift
-#endif
-);
+#if (defined PNG_READ_BACKGROUND_SUPPORTED) ||\
+ (defined PNG_READ_ALPHA_MODE_SUPPORTED)
+ if (png_ptr->transformations & PNG_COMPOSE)
+ png_do_compose(row_info, png_ptr->row_buf + 1, png_ptr);
#endif
#ifdef PNG_READ_GAMMA_SUPPORTED
if ((png_ptr->transformations & PNG_GAMMA) &&
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
- !((png_ptr->transformations & PNG_BACKGROUND) &&
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ /* Because RGB_TO_GRAY does the gamma transform. */
+ !(png_ptr->transformations & PNG_RGB_TO_GRAY) &&
+#endif
+#if (defined PNG_READ_BACKGROUND_SUPPORTED) ||\
+ (defined PNG_READ_ALPHA_MODE_SUPPORTED)
+ /* Because PNG_COMPOSE does the gamma transform if there is something to
+ * do (if there is an alpha channel or transparency.)
+ */
+ !((png_ptr->transformations & PNG_COMPOSE) &&
((png_ptr->num_trans != 0) ||
(png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) &&
#endif
+ /* Because png_init_read_transformations transforms the palette, unless
+ * RGB_TO_GRAY will do the transform.
+ */
(png_ptr->color_type != PNG_COLOR_TYPE_PALETTE))
- png_do_gamma(&(png_ptr->row_info), png_ptr->row_buf + 1,
- png_ptr->gamma_table, png_ptr->gamma_16_table,
- png_ptr->gamma_shift);
+ png_do_gamma(row_info, png_ptr->row_buf + 1, png_ptr);
#endif
-#ifdef PNG_READ_16_TO_8_SUPPORTED
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+ if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
+ (png_ptr->transformations & PNG_COMPOSE) &&
+ (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
+ row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA))
+ png_do_strip_channel(row_info, png_ptr->row_buf + 1,
+ 0 /* at_start == false, because SWAP_ALPHA happens later */);
+#endif
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ if ((png_ptr->transformations & PNG_ENCODE_ALPHA) &&
+ (row_info->color_type & PNG_COLOR_MASK_ALPHA))
+ png_do_encode_alpha(row_info, png_ptr->row_buf + 1, png_ptr);
+#endif
+
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ if (png_ptr->transformations & PNG_SCALE_16_TO_8)
+ png_do_scale_16_to_8(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+ /* There is no harm in doing both of these because only one has any effect,
+ * by putting the 'scale' option first if the app asks for scale (either by
+ * calling the API or in a TRANSFORM flag) this is what happens.
+ */
if (png_ptr->transformations & PNG_16_TO_8)
- png_do_chop(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_chop(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_READ_QUANTIZE_SUPPORTED
if (png_ptr->transformations & PNG_QUANTIZE)
{
- png_do_quantize((png_row_infop)&(png_ptr->row_info), png_ptr->row_buf + 1,
- png_ptr->palette_lookup, png_ptr->quantize_index);
- if (png_ptr->row_info.rowbytes == (png_uint_32)0)
+ png_do_quantize(row_info, png_ptr->row_buf + 1,
+ png_ptr->palette_lookup, png_ptr->quantize_index);
+
+ if (row_info->rowbytes == 0)
png_error(png_ptr, "png_do_quantize returned rowbytes=0");
}
+#endif /* PNG_READ_QUANTIZE_SUPPORTED */
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+ /* Do the expansion now, after all the arithmetic has been done. Notice
+ * that previous transformations can handle the PNG_EXPAND_16 flag if this
+ * is efficient (particularly true in the case of gamma correction, where
+ * better accuracy results faster!)
+ */
+ if (png_ptr->transformations & PNG_EXPAND_16)
+ png_do_expand_16(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ /*NOTE: moved here in 1.5.4 (from much later in this list.) */
+ if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
+ (png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
+ png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_READ_INVERT_SUPPORTED
if (png_ptr->transformations & PNG_INVERT_MONO)
- png_do_invert(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_invert(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_READ_SHIFT_SUPPORTED
if (png_ptr->transformations & PNG_SHIFT)
- png_do_unshift(&(png_ptr->row_info), png_ptr->row_buf + 1,
- &(png_ptr->shift));
+ png_do_unshift(row_info, png_ptr->row_buf + 1,
+ &(png_ptr->shift));
#endif
#ifdef PNG_READ_PACK_SUPPORTED
if (png_ptr->transformations & PNG_PACK)
- png_do_unpack(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_unpack(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_READ_BGR_SUPPORTED
if (png_ptr->transformations & PNG_BGR)
- png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_bgr(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_READ_PACKSWAP_SUPPORTED
if (png_ptr->transformations & PNG_PACKSWAP)
- png_do_packswap(&(png_ptr->row_info), png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
- /* If gray -> RGB, do so now only if we did not do so above */
- if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
- (png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
- png_do_gray_to_rgb(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_packswap(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_READ_FILLER_SUPPORTED
if (png_ptr->transformations & PNG_FILLER)
- png_do_read_filler(&(png_ptr->row_info), png_ptr->row_buf + 1,
- (png_uint_32)png_ptr->filler, png_ptr->flags);
+ png_do_read_filler(row_info, png_ptr->row_buf + 1,
+ (png_uint_32)png_ptr->filler, png_ptr->flags);
#endif
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
if (png_ptr->transformations & PNG_INVERT_ALPHA)
- png_do_read_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_read_invert_alpha(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
if (png_ptr->transformations & PNG_SWAP_ALPHA)
- png_do_read_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_read_swap_alpha(row_info, png_ptr->row_buf + 1);
#endif
+#ifdef PNG_READ_16BIT_SUPPORTED
#ifdef PNG_READ_SWAP_SUPPORTED
if (png_ptr->transformations & PNG_SWAP_BYTES)
- png_do_swap(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_swap(row_info, png_ptr->row_buf + 1);
+#endif
#endif
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
@@ -1551,28 +2334,28 @@
{
if (png_ptr->read_user_transform_fn != NULL)
(*(png_ptr->read_user_transform_fn)) /* User read transform function */
- (png_ptr, /* png_ptr */
- &(png_ptr->row_info), /* row_info: */
- /* png_uint_32 width; width of row */
- /* png_uint_32 rowbytes; number of bytes in row */
- /* png_byte color_type; color type of pixels */
- /* png_byte bit_depth; bit depth of samples */
- /* png_byte channels; number of channels (1-4) */
- /* png_byte pixel_depth; bits per pixel (depth*channels) */
- png_ptr->row_buf + 1); /* start of pixel data for row */
+ (png_ptr, /* png_ptr */
+ row_info, /* row_info: */
+ /* png_uint_32 width; width of row */
+ /* png_size_t rowbytes; number of bytes in row */
+ /* png_byte color_type; color type of pixels */
+ /* png_byte bit_depth; bit depth of samples */
+ /* png_byte channels; number of channels (1-4) */
+ /* png_byte pixel_depth; bits per pixel (depth*channels) */
+ png_ptr->row_buf + 1); /* start of pixel data for row */
#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
if (png_ptr->user_transform_depth)
- png_ptr->row_info.bit_depth = png_ptr->user_transform_depth;
+ row_info->bit_depth = png_ptr->user_transform_depth;
+
if (png_ptr->user_transform_channels)
- png_ptr->row_info.channels = png_ptr->user_transform_channels;
+ row_info->channels = png_ptr->user_transform_channels;
#endif
- png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth *
- png_ptr->row_info.channels);
- png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
- png_ptr->row_info.width);
+ row_info->pixel_depth = (png_byte)(row_info->bit_depth *
+ row_info->channels);
+
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_info->width);
}
#endif
-
}
#ifdef PNG_READ_PACK_SUPPORTED
@@ -1602,11 +2385,13 @@
for (i = 0; i < row_width; i++)
{
*dp = (png_byte)((*sp >> shift) & 0x01);
+
if (shift == 7)
{
shift = 0;
sp--;
}
+
else
shift++;
@@ -1624,11 +2409,13 @@
for (i = 0; i < row_width; i++)
{
*dp = (png_byte)((*sp >> shift) & 0x03);
+
if (shift == 6)
{
shift = 0;
sp--;
}
+
else
shift += 2;
@@ -1645,11 +2432,13 @@
for (i = 0; i < row_width; i++)
{
*dp = (png_byte)((*sp >> shift) & 0x0f);
+
if (shift == 4)
{
shift = 0;
sp--;
}
+
else
shift = 4;
@@ -1675,147 +2464,222 @@
* the values back to 0 through 31.
*/
void /* PRIVATE */
-png_do_unshift(png_row_infop row_info, png_bytep row, png_color_8p sig_bits)
+png_do_unshift(png_row_infop row_info, png_bytep row,
+ png_const_color_8p sig_bits)
{
+ int color_type;
+
png_debug(1, "in png_do_unshift");
- if (
- row_info->color_type != PNG_COLOR_TYPE_PALETTE)
+ /* The palette case has already been handled in the _init routine. */
+ color_type = row_info->color_type;
+
+ if (color_type != PNG_COLOR_TYPE_PALETTE)
{
int shift[4];
int channels = 0;
- int c;
- png_uint_16 value = 0;
- png_uint_32 row_width = row_info->width;
+ int bit_depth = row_info->bit_depth;
- if (row_info->color_type & PNG_COLOR_MASK_COLOR)
+ if (color_type & PNG_COLOR_MASK_COLOR)
{
- shift[channels++] = row_info->bit_depth - sig_bits->red;
- shift[channels++] = row_info->bit_depth - sig_bits->green;
- shift[channels++] = row_info->bit_depth - sig_bits->blue;
+ shift[channels++] = bit_depth - sig_bits->red;
+ shift[channels++] = bit_depth - sig_bits->green;
+ shift[channels++] = bit_depth - sig_bits->blue;
}
+
else
{
- shift[channels++] = row_info->bit_depth - sig_bits->gray;
+ shift[channels++] = bit_depth - sig_bits->gray;
}
- if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
+
+ if (color_type & PNG_COLOR_MASK_ALPHA)
{
- shift[channels++] = row_info->bit_depth - sig_bits->alpha;
+ shift[channels++] = bit_depth - sig_bits->alpha;
}
- for (c = 0; c < channels; c++)
{
- if (shift[c] <= 0)
- shift[c] = 0;
- else
- value = 1;
+ int c, have_shift;
+
+ for (c = have_shift = 0; c < channels; ++c)
+ {
+ /* A shift of more than the bit depth is an error condition but it
+ * gets ignored here.
+ */
+ if (shift[c] <= 0 || shift[c] >= bit_depth)
+ shift[c] = 0;
+
+ else
+ have_shift = 1;
+ }
+
+ if (!have_shift)
+ return;
}
- if (!value)
- return;
-
- switch (row_info->bit_depth)
+ switch (bit_depth)
{
default:
- break;
+ /* Must be 1bpp gray: should not be here! */
+ /* NOTREACHED */
+ break;
case 2:
+ /* Must be 2bpp gray */
+ /* assert(channels == 1 && shift[0] == 1) */
{
- png_bytep bp;
- png_uint_32 i;
- png_uint_32 istop = row_info->rowbytes;
+ png_bytep bp = row;
+ png_bytep bp_end = bp + row_info->rowbytes;
- for (bp = row, i = 0; i < istop; i++)
+ while (bp < bp_end)
{
- *bp >>= 1;
- *bp++ &= 0x55;
+ int b = (*bp >> 1) & 0x55;
+ *bp++ = (png_byte)b;
}
break;
}
case 4:
+ /* Must be 4bpp gray */
+ /* assert(channels == 1) */
{
png_bytep bp = row;
- png_uint_32 i;
- png_uint_32 istop = row_info->rowbytes;
- png_byte mask = (png_byte)((((int)0xf0 >> shift[0]) & (int)0xf0) |
- (png_byte)((int)0xf >> shift[0]));
+ png_bytep bp_end = bp + row_info->rowbytes;
+ int gray_shift = shift[0];
+ int mask = 0xf >> gray_shift;
- for (i = 0; i < istop; i++)
+ mask |= mask << 4;
+
+ while (bp < bp_end)
{
- *bp >>= shift[0];
- *bp++ &= mask;
+ int b = (*bp >> gray_shift) & mask;
+ *bp++ = (png_byte)b;
}
break;
}
case 8:
+ /* Single byte components, G, GA, RGB, RGBA */
{
png_bytep bp = row;
- png_uint_32 i;
- png_uint_32 istop = row_width * channels;
+ png_bytep bp_end = bp + row_info->rowbytes;
+ int channel = 0;
- for (i = 0; i < istop; i++)
+ while (bp < bp_end)
{
- *bp++ >>= shift[i%channels];
+ int b = *bp >> shift[channel];
+ if (++channel >= channels)
+ channel = 0;
+ *bp++ = (png_byte)b;
}
break;
}
+#ifdef PNG_READ_16BIT_SUPPORTED
case 16:
+ /* Double byte components, G, GA, RGB, RGBA */
{
png_bytep bp = row;
- png_uint_32 i;
- png_uint_32 istop = channels * row_width;
+ png_bytep bp_end = bp + row_info->rowbytes;
+ int channel = 0;
- for (i = 0; i < istop; i++)
+ while (bp < bp_end)
{
- value = (png_uint_16)((*bp << 8) + *(bp + 1));
- value >>= shift[i%channels];
+ int value = (bp[0] << 8) + bp[1];
+
+ value >>= shift[channel];
+ if (++channel >= channels)
+ channel = 0;
*bp++ = (png_byte)(value >> 8);
*bp++ = (png_byte)(value & 0xff);
}
break;
}
+#endif
}
}
}
#endif
-#ifdef PNG_READ_16_TO_8_SUPPORTED
-/* Chop rows of bit depth 16 down to 8 */
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+/* Scale rows of bit depth 16 down to 8 accurately */
void /* PRIVATE */
+png_do_scale_16_to_8(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_scale_16_to_8");
+
+ if (row_info->bit_depth == 16)
+ {
+ png_bytep sp = row; /* source */
+ png_bytep dp = row; /* destination */
+ png_bytep ep = sp + row_info->rowbytes; /* end+1 */
+
+ while (sp < ep)
+ {
+ /* The input is an array of 16 bit components, these must be scaled to
+ * 8 bits each. For a 16 bit value V the required value (from the PNG
+ * specification) is:
+ *
+ * (V * 255) / 65535
+ *
+ * This reduces to round(V / 257), or floor((V + 128.5)/257)
+ *
+ * Represent V as the two byte value vhi.vlo. Make a guess that the
+ * result is the top byte of V, vhi, then the correction to this value
+ * is:
+ *
+ * error = floor(((V-vhi.vhi) + 128.5) / 257)
+ * = floor(((vlo-vhi) + 128.5) / 257)
+ *
+ * This can be approximated using integer arithmetic (and a signed
+ * shift):
+ *
+ * error = (vlo-vhi+128) >> 8;
+ *
+ * The approximate differs from the exact answer only when (vlo-vhi) is
+ * 128; it then gives a correction of +1 when the exact correction is
+ * 0. This gives 128 errors. The exact answer (correct for all 16 bit
+ * input values) is:
+ *
+ * error = (vlo-vhi+128)*65535 >> 24;
+ *
+ * An alternative arithmetic calculation which also gives no errors is:
+ *
+ * (V * 255 + 32895) >> 16
+ */
+
+ png_int_32 tmp = *sp++; /* must be signed! */
+ tmp += (((int)*sp++ - tmp + 128) * 65535) >> 24;
+ *dp++ = (png_byte)tmp;
+ }
+
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = (png_byte)(8 * row_info->channels);
+ row_info->rowbytes = row_info->width * row_info->channels;
+ }
+}
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+void /* PRIVATE */
+/* Simply discard the low byte. This was the default behavior prior
+ * to libpng-1.5.4.
+ */
png_do_chop(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_chop");
if (row_info->bit_depth == 16)
{
- png_bytep sp = row;
- png_bytep dp = row;
- png_uint_32 i;
- png_uint_32 istop = row_info->width * row_info->channels;
+ png_bytep sp = row; /* source */
+ png_bytep dp = row; /* destination */
+ png_bytep ep = sp + row_info->rowbytes; /* end+1 */
- for (i = 0; i<istop; i++, sp += 2, dp++)
+ while (sp < ep)
{
-#ifdef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
- /* This does a more accurate scaling of the 16-bit color
- * value, rather than a simple low-byte truncation.
- *
- * Prior to libpng-1.4.8 and 1.5.4, the calculation here was
- * incorrect, so if you used ACCURATE_SCALE you will now see
- * a slightly different result. In libpng-1.5.4 and
- * later you will need to use the new png_set_scale_16_to_8()
- * API to obtain accurate 16-to-8 scaling.
- */
- png_int_32 tmp = *sp; /* must be signed! */
- tmp += (((int)sp[1] - tmp + 128) * 65535) >> 24;
- *dp = (png_byte)tmp;
-#else
- /* Simply discard the low order byte */
- *dp = *sp;
-#endif
+ *dp++ = *sp;
+ sp += 2; /* skip low byte */
}
+
row_info->bit_depth = 8;
row_info->pixel_depth = (png_byte)(8 * row_info->channels);
row_info->rowbytes = row_info->width * row_info->channels;
@@ -1850,6 +2714,8 @@
*(--dp) = save;
}
}
+
+#ifdef PNG_READ_16BIT_SUPPORTED
/* This converts from RRGGBBAA to AARRGGBB */
else
{
@@ -1872,7 +2738,9 @@
*(--dp) = save[1];
}
}
+#endif
}
+
else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
{
/* This converts from GA to AG */
@@ -1890,6 +2758,8 @@
*(--dp) = save;
}
}
+
+#ifdef PNG_READ_16BIT_SUPPORTED
/* This converts from GGAA to AAGG */
else
{
@@ -1908,6 +2778,7 @@
*(--dp) = save[1];
}
}
+#endif
}
}
}
@@ -1917,94 +2788,99 @@
void /* PRIVATE */
png_do_read_invert_alpha(png_row_infop row_info, png_bytep row)
{
+ png_uint_32 row_width;
png_debug(1, "in png_do_read_invert_alpha");
+ row_width = row_info->width;
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
- png_uint_32 row_width = row_info->width;
- if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ if (row_info->bit_depth == 8)
{
/* This inverts the alpha channel in RGBA */
- if (row_info->bit_depth == 8)
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
{
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_uint_32 i;
+ *(--dp) = (png_byte)(255 - *(--sp));
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = (png_byte)(255 - *(--sp));
-
-/* This does nothing:
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- We can replace it with:
+/* This does nothing:
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ We can replace it with:
*/
- sp-=3;
- dp=sp;
- }
- }
- /* This inverts the alpha channel in RRGGBBAA */
- else
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = (png_byte)(255 - *(--sp));
- *(--dp) = (png_byte)(255 - *(--sp));
-
-/* This does nothing:
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- We can replace it with:
-*/
- sp-=6;
- dp=sp;
- }
+ sp-=3;
+ dp=sp;
}
}
- else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+ /* This inverts the alpha channel in RRGGBBAA */
+ else
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = (png_byte)(255 - *(--sp));
+ *(--dp) = (png_byte)(255 - *(--sp));
+
+/* This does nothing:
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ We can replace it with:
+*/
+ sp-=6;
+ dp=sp;
+ }
+ }
+#endif
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
{
/* This inverts the alpha channel in GA */
- if (row_info->bit_depth == 8)
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_uint_32 i;
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = (png_byte)(255 - *(--sp));
- *(--dp) = *(--sp);
- }
- }
- /* This inverts the alpha channel in GGAA */
- else
+ for (i = 0; i < row_width; i++)
{
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = (png_byte)(255 - *(--sp));
- *(--dp) = (png_byte)(255 - *(--sp));
-/*
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
-*/
- sp-=2;
- dp=sp;
- }
+ *(--dp) = (png_byte)(255 - *(--sp));
+ *(--dp) = *(--sp);
}
}
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+ else
+ {
+ /* This inverts the alpha channel in GGAA */
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = (png_byte)(255 - *(--sp));
+ *(--dp) = (png_byte)(255 - *(--sp));
+/*
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+*/
+ sp-=2;
+ dp=sp;
+ }
+ }
+#endif
}
}
#endif
@@ -2013,12 +2889,14 @@
/* Add filler channel if we have RGB color */
void /* PRIVATE */
png_do_read_filler(png_row_infop row_info, png_bytep row,
- png_uint_32 filler, png_uint_32 flags)
+ png_uint_32 filler, png_uint_32 flags)
{
png_uint_32 i;
png_uint_32 row_width = row_info->width;
+#ifdef PNG_READ_16BIT_SUPPORTED
png_byte hi_filler = (png_byte)((filler>>8) & 0xff);
+#endif
png_byte lo_filler = (png_byte)(filler & 0xff);
png_debug(1, "in png_do_read_filler");
@@ -2028,9 +2906,9 @@
{
if (row_info->bit_depth == 8)
{
- /* This changes the data from G to GX */
if (flags & PNG_FLAG_FILLER_AFTER)
{
+ /* This changes the data from G to GX */
png_bytep sp = row + (png_size_t)row_width;
png_bytep dp = sp + (png_size_t)row_width;
for (i = 1; i < row_width; i++)
@@ -2043,9 +2921,10 @@
row_info->pixel_depth = 16;
row_info->rowbytes = row_width * 2;
}
- /* This changes the data from G to XG */
+
else
{
+ /* This changes the data from G to XG */
png_bytep sp = row + (png_size_t)row_width;
png_bytep dp = sp + (png_size_t)row_width;
for (i = 0; i < row_width; i++)
@@ -2058,11 +2937,13 @@
row_info->rowbytes = row_width * 2;
}
}
+
+#ifdef PNG_READ_16BIT_SUPPORTED
else if (row_info->bit_depth == 16)
{
- /* This changes the data from GG to GGXX */
if (flags & PNG_FLAG_FILLER_AFTER)
{
+ /* This changes the data from GG to GGXX */
png_bytep sp = row + (png_size_t)row_width * 2;
png_bytep dp = sp + (png_size_t)row_width * 2;
for (i = 1; i < row_width; i++)
@@ -2078,9 +2959,10 @@
row_info->pixel_depth = 32;
row_info->rowbytes = row_width * 4;
}
- /* This changes the data from GG to XXGG */
+
else
{
+ /* This changes the data from GG to XXGG */
png_bytep sp = row + (png_size_t)row_width * 2;
png_bytep dp = sp + (png_size_t)row_width * 2;
for (i = 0; i < row_width; i++)
@@ -2095,14 +2977,15 @@
row_info->rowbytes = row_width * 4;
}
}
+#endif
} /* COLOR_TYPE == GRAY */
else if (row_info->color_type == PNG_COLOR_TYPE_RGB)
{
if (row_info->bit_depth == 8)
{
- /* This changes the data from RGB to RGBX */
if (flags & PNG_FLAG_FILLER_AFTER)
{
+ /* This changes the data from RGB to RGBX */
png_bytep sp = row + (png_size_t)row_width * 3;
png_bytep dp = sp + (png_size_t)row_width;
for (i = 1; i < row_width; i++)
@@ -2117,9 +3000,10 @@
row_info->pixel_depth = 32;
row_info->rowbytes = row_width * 4;
}
- /* This changes the data from RGB to XRGB */
+
else
{
+ /* This changes the data from RGB to XRGB */
png_bytep sp = row + (png_size_t)row_width * 3;
png_bytep dp = sp + (png_size_t)row_width;
for (i = 0; i < row_width; i++)
@@ -2134,11 +3018,13 @@
row_info->rowbytes = row_width * 4;
}
}
+
+#ifdef PNG_READ_16BIT_SUPPORTED
else if (row_info->bit_depth == 16)
{
- /* This changes the data from RRGGBB to RRGGBBXX */
if (flags & PNG_FLAG_FILLER_AFTER)
{
+ /* This changes the data from RRGGBB to RRGGBBXX */
png_bytep sp = row + (png_size_t)row_width * 6;
png_bytep dp = sp + (png_size_t)row_width * 2;
for (i = 1; i < row_width; i++)
@@ -2158,9 +3044,10 @@
row_info->pixel_depth = 64;
row_info->rowbytes = row_width * 8;
}
- /* This changes the data from RRGGBB to XXRRGGBB */
+
else
{
+ /* This changes the data from RRGGBB to XXRRGGBB */
png_bytep sp = row + (png_size_t)row_width * 6;
png_bytep dp = sp + (png_size_t)row_width * 2;
for (i = 0; i < row_width; i++)
@@ -2174,11 +3061,13 @@
*(--dp) = hi_filler;
*(--dp) = lo_filler;
}
+
row_info->channels = 4;
row_info->pixel_depth = 64;
row_info->rowbytes = row_width * 8;
}
}
+#endif
} /* COLOR_TYPE == RGB */
}
#endif
@@ -2194,12 +3083,13 @@
png_debug(1, "in png_do_gray_to_rgb");
if (row_info->bit_depth >= 8 &&
- !(row_info->color_type & PNG_COLOR_MASK_COLOR))
+ !(row_info->color_type & PNG_COLOR_MASK_COLOR))
{
if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
if (row_info->bit_depth == 8)
{
+ /* This changes G to RGB */
png_bytep sp = row + (png_size_t)row_width - 1;
png_bytep dp = sp + (png_size_t)row_width * 2;
for (i = 0; i < row_width; i++)
@@ -2209,8 +3099,10 @@
*(dp--) = *(sp--);
}
}
+
else
{
+ /* This changes GG to RRGGBB */
png_bytep sp = row + (png_size_t)row_width * 2 - 1;
png_bytep dp = sp + (png_size_t)row_width * 4;
for (i = 0; i < row_width; i++)
@@ -2224,10 +3116,12 @@
}
}
}
+
else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
{
if (row_info->bit_depth == 8)
{
+ /* This changes GA to RGBA */
png_bytep sp = row + (png_size_t)row_width * 2 - 1;
png_bytep dp = sp + (png_size_t)row_width * 2;
for (i = 0; i < row_width; i++)
@@ -2238,8 +3132,10 @@
*(dp--) = *(sp--);
}
}
+
else
{
+ /* This changes GGAA to RRGGBBAA */
png_bytep sp = row + (png_size_t)row_width * 4 - 1;
png_bytep dp = sp + (png_size_t)row_width * 4;
for (i = 0; i < row_width; i++)
@@ -2255,10 +3151,10 @@
}
}
}
- row_info->channels += (png_byte)2;
+ row_info->channels = (png_byte)(row_info->channels + 2);
row_info->color_type |= PNG_COLOR_MASK_COLOR;
row_info->pixel_depth = (png_byte)(row_info->channels *
- row_info->bit_depth);
+ row_info->bit_depth);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
}
@@ -2266,264 +3162,258 @@
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
/* Reduce RGB files to grayscale, with or without alpha
- * using the equation given in Poynton's ColorFAQ at
- * <http://www.inforamp.net/~poynton/> (THIS LINK IS DEAD June 2008)
- * New link:
- * <http://www.poynton.com/notes/colour_and_gamma/>
+ * using the equation given in Poynton's ColorFAQ of 1998-01-04 at
+ * <http://www.inforamp.net/~poynton/> (THIS LINK IS DEAD June 2008 but
+ * versions dated 1998 through November 2002 have been archived at
+ * http://web.archive.org/web/20000816232553/http://www.inforamp.net/
+ * ~poynton/notes/colour_and_gamma/ColorFAQ.txt )
* Charles Poynton poynton at poynton.com
*
* Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
*
- * We approximate this with
- *
- * Y = 0.21268 * R + 0.7151 * G + 0.07217 * B
- *
* which can be expressed with integers as
*
* Y = (6969 * R + 23434 * G + 2365 * B)/32768
*
- * The calculation is to be done in a linear colorspace.
+ * Poynton's current link (as of January 2003 through July 2011):
+ * <http://www.poynton.com/notes/colour_and_gamma/>
+ * has changed the numbers slightly:
*
- * Other integer coefficents can be used via png_set_rgb_to_gray().
+ * Y = 0.2126*R + 0.7152*G + 0.0722*B
+ *
+ * which can be expressed with integers as
+ *
+ * Y = (6966 * R + 23436 * G + 2366 * B)/32768
+ *
+ * Historically, however, libpng uses numbers derived from the ITU-R Rec 709
+ * end point chromaticities and the D65 white point. Depending on the
+ * precision used for the D65 white point this produces a variety of different
+ * numbers, however if the four decimal place value used in ITU-R Rec 709 is
+ * used (0.3127,0.3290) the Y calculation would be:
+ *
+ * Y = (6968 * R + 23435 * G + 2366 * B)/32768
+ *
+ * While this is correct the rounding results in an overflow for white, because
+ * the sum of the rounded coefficients is 32769, not 32768. Consequently
+ * libpng uses, instead, the closest non-overflowing approximation:
+ *
+ * Y = (6968 * R + 23434 * G + 2366 * B)/32768
+ *
+ * Starting with libpng-1.5.5, if the image being converted has a cHRM chunk
+ * (including an sRGB chunk) then the chromaticities are used to calculate the
+ * coefficients. See the chunk handling in pngrutil.c for more information.
+ *
+ * In all cases the calculation is to be done in a linear colorspace. If no
+ * gamma information is available to correct the encoding of the original RGB
+ * values this results in an implicit assumption that the original PNG RGB
+ * values were linear.
+ *
+ * Other integer coefficents can be used via png_set_rgb_to_gray(). Because
+ * the API takes just red and green coefficients the blue coefficient is
+ * calculated to make the sum 32768. This will result in different rounding
+ * to that used above.
*/
int /* PRIVATE */
png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
{
- png_uint_32 i;
-
- png_uint_32 row_width = row_info->width;
int rgb_error = 0;
png_debug(1, "in png_do_rgb_to_gray");
if (!(row_info->color_type & PNG_COLOR_MASK_PALETTE) &&
- (row_info->color_type & PNG_COLOR_MASK_COLOR))
+ (row_info->color_type & PNG_COLOR_MASK_COLOR))
{
- png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff;
- png_uint_32 gc = png_ptr->rgb_to_gray_green_coeff;
- png_uint_32 bc = png_ptr->rgb_to_gray_blue_coeff;
+ PNG_CONST png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff;
+ PNG_CONST png_uint_32 gc = png_ptr->rgb_to_gray_green_coeff;
+ PNG_CONST png_uint_32 bc = 32768 - rc - gc;
+ PNG_CONST png_uint_32 row_width = row_info->width;
+ PNG_CONST int have_alpha =
+ (row_info->color_type & PNG_COLOR_MASK_ALPHA) != 0;
- if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ if (row_info->bit_depth == 8)
{
- if (row_info->bit_depth == 8)
- {
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL)
- {
- png_bytep sp = row;
- png_bytep dp = row;
+ /* Notice that gamma to/from 1 are not necessarily inverses (if
+ * there is an overall gamma correction). Prior to 1.5.5 this code
+ * checked the linearized values for equality; this doesn't match
+ * the documentation, the original values must be checked.
+ */
+ if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL)
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ png_uint_32 i;
- for (i = 0; i < row_width; i++)
- {
- png_byte red = png_ptr->gamma_to_1[*(sp++)];
- png_byte green = png_ptr->gamma_to_1[*(sp++)];
- png_byte blue = png_ptr->gamma_to_1[*(sp++)];
- if (red != green || red != blue)
- {
- rgb_error |= 1;
- *(dp++) = png_ptr->gamma_from_1[
- (rc*red + gc*green + bc*blue)>>15];
- }
- else
- *(dp++) = *(sp - 1);
- }
- }
- else
-#endif
+ for (i = 0; i < row_width; i++)
{
- png_bytep sp = row;
- png_bytep dp = row;
- for (i = 0; i < row_width; i++)
+ png_byte red = *(sp++);
+ png_byte green = *(sp++);
+ png_byte blue = *(sp++);
+
+ if (red != green || red != blue)
{
- png_byte red = *(sp++);
- png_byte green = *(sp++);
- png_byte blue = *(sp++);
- if (red != green || red != blue)
- {
- rgb_error |= 1;
- *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
- }
- else
- *(dp++) = *(sp - 1);
+ red = png_ptr->gamma_to_1[red];
+ green = png_ptr->gamma_to_1[green];
+ blue = png_ptr->gamma_to_1[blue];
+
+ rgb_error |= 1;
+ *(dp++) = png_ptr->gamma_from_1[
+ (rc*red + gc*green + bc*blue + 16384)>>15];
}
+
+ else
+ {
+ /* If there is no overall correction the table will not be
+ * set.
+ */
+ if (png_ptr->gamma_table != NULL)
+ red = png_ptr->gamma_table[red];
+
+ *(dp++) = red;
+ }
+
+ if (have_alpha)
+ *(dp++) = *(sp++);
}
}
-
- else /* RGB bit_depth == 16 */
- {
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- if (png_ptr->gamma_16_to_1 != NULL &&
- png_ptr->gamma_16_from_1 != NULL)
- {
- png_bytep sp = row;
- png_bytep dp = row;
- for (i = 0; i < row_width; i++)
- {
- png_uint_16 red, green, blue, w;
-
- red = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
- green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
- blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
-
- if (red == green && red == blue)
- w = red;
- else
- {
- png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff) >>
- png_ptr->gamma_shift][red>>8];
- png_uint_16 green_1 =
- png_ptr->gamma_16_to_1[(green&0xff) >>
- png_ptr->gamma_shift][green>>8];
- png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff) >>
- png_ptr->gamma_shift][blue>>8];
- png_uint_16 gray16 = (png_uint_16)((rc*red_1 + gc*green_1
- + bc*blue_1)>>15);
- w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
- png_ptr->gamma_shift][gray16 >> 8];
- rgb_error |= 1;
- }
-
- *(dp++) = (png_byte)((w>>8) & 0xff);
- *(dp++) = (png_byte)(w & 0xff);
- }
- }
- else
+ else
#endif
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
{
- png_bytep sp = row;
- png_bytep dp = row;
- for (i = 0; i < row_width; i++)
+ png_byte red = *(sp++);
+ png_byte green = *(sp++);
+ png_byte blue = *(sp++);
+
+ if (red != green || red != blue)
{
- png_uint_16 red, green, blue, gray16;
-
- red = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
- green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
- blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
-
- if (red != green || red != blue)
- rgb_error |= 1;
- gray16 = (png_uint_16)((rc*red + gc*green + bc*blue)>>15);
- *(dp++) = (png_byte)((gray16>>8) & 0xff);
- *(dp++) = (png_byte)(gray16 & 0xff);
+ rgb_error |= 1;
+ /*NOTE: this is the historical approach which simply
+ * truncates the results.
+ */
+ *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
}
+
+ else
+ *(dp++) = red;
+
+ if (have_alpha)
+ *(dp++) = *(sp++);
}
}
}
- if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+
+ else /* RGB bit_depth == 16 */
{
- if (row_info->bit_depth == 8)
- {
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL)
- {
- png_bytep sp = row;
- png_bytep dp = row;
- for (i = 0; i < row_width; i++)
- {
- png_byte red = png_ptr->gamma_to_1[*(sp++)];
- png_byte green = png_ptr->gamma_to_1[*(sp++)];
- png_byte blue = png_ptr->gamma_to_1[*(sp++)];
- if (red != green || red != blue)
- rgb_error |= 1;
- *(dp++) = png_ptr->gamma_from_1
- [(rc*red + gc*green + bc*blue)>>15];
- *(dp++) = *(sp++); /* alpha */
- }
- }
- else
-#endif
- {
- png_bytep sp = row;
- png_bytep dp = row;
- for (i = 0; i < row_width; i++)
- {
- png_byte red = *(sp++);
- png_byte green = *(sp++);
- png_byte blue = *(sp++);
- if (red != green || red != blue)
- rgb_error |= 1;
- *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
- *(dp++) = *(sp++); /* alpha */
- }
- }
- }
- else /* RGBA bit_depth == 16 */
+ if (png_ptr->gamma_16_to_1 != NULL && png_ptr->gamma_16_from_1 != NULL)
{
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- if (png_ptr->gamma_16_to_1 != NULL &&
- png_ptr->gamma_16_from_1 != NULL)
+ png_bytep sp = row;
+ png_bytep dp = row;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
{
- png_bytep sp = row;
- png_bytep dp = row;
- for (i = 0; i < row_width; i++)
+ png_uint_16 red, green, blue, w;
+
+ red = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+ green = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+ blue = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+
+ if (red == green && red == blue)
{
- png_uint_16 red, green, blue, w;
+ if (png_ptr->gamma_16_table != NULL)
+ w = png_ptr->gamma_16_table[(red&0xff)
+ >> png_ptr->gamma_shift][red>>8];
- red = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
- green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
- blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
-
- if (red == green && red == blue)
- w = red;
else
- {
- png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff) >>
- png_ptr->gamma_shift][red>>8];
- png_uint_16 green_1 =
- png_ptr->gamma_16_to_1[(green&0xff) >>
- png_ptr->gamma_shift][green>>8];
- png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff) >>
- png_ptr->gamma_shift][blue>>8];
- png_uint_16 gray16 = (png_uint_16)((rc * red_1
- + gc * green_1 + bc * blue_1)>>15);
- w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
- png_ptr->gamma_shift][gray16 >> 8];
- rgb_error |= 1;
- }
+ w = red;
+ }
- *(dp++) = (png_byte)((w>>8) & 0xff);
- *(dp++) = (png_byte)(w & 0xff);
- *(dp++) = *(sp++); /* alpha */
+ else
+ {
+ png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff)
+ >> png_ptr->gamma_shift][red>>8];
+ png_uint_16 green_1 =
+ png_ptr->gamma_16_to_1[(green&0xff) >>
+ png_ptr->gamma_shift][green>>8];
+ png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff)
+ >> png_ptr->gamma_shift][blue>>8];
+ png_uint_16 gray16 = (png_uint_16)((rc*red_1 + gc*green_1
+ + bc*blue_1 + 16384)>>15);
+ w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
+ png_ptr->gamma_shift][gray16 >> 8];
+ rgb_error |= 1;
+ }
+
+ *(dp++) = (png_byte)((w>>8) & 0xff);
+ *(dp++) = (png_byte)(w & 0xff);
+
+ if (have_alpha)
+ {
+ *(dp++) = *(sp++);
*(dp++) = *(sp++);
}
}
- else
+ }
+ else
#endif
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
{
- png_bytep sp = row;
- png_bytep dp = row;
- for (i = 0; i < row_width; i++)
+ png_uint_16 red, green, blue, gray16;
+
+ red = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+ green = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+ blue = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+
+ if (red != green || red != blue)
+ rgb_error |= 1;
+
+ /* From 1.5.5 in the 16 bit case do the accurate conversion even
+ * in the 'fast' case - this is because this is where the code
+ * ends up when handling linear 16 bit data.
+ */
+ gray16 = (png_uint_16)((rc*red + gc*green + bc*blue + 16384) >>
+ 15);
+ *(dp++) = (png_byte)((gray16>>8) & 0xff);
+ *(dp++) = (png_byte)(gray16 & 0xff);
+
+ if (have_alpha)
{
- png_uint_16 red, green, blue, gray16;
- red = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2;
- green = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2;
- blue = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2;
- if (red != green || red != blue)
- rgb_error |= 1;
- gray16 = (png_uint_16)((rc*red + gc*green + bc*blue)>>15);
- *(dp++) = (png_byte)((gray16>>8) & 0xff);
- *(dp++) = (png_byte)(gray16 & 0xff);
- *(dp++) = *(sp++); /* alpha */
+ *(dp++) = *(sp++);
*(dp++) = *(sp++);
}
}
}
}
- row_info->channels -= (png_byte)2;
- row_info->color_type &= ~PNG_COLOR_MASK_COLOR;
+
+ row_info->channels = (png_byte)(row_info->channels - 2);
+ row_info->color_type = (png_byte)(row_info->color_type &
+ ~PNG_COLOR_MASK_COLOR);
row_info->pixel_depth = (png_byte)(row_info->channels *
- row_info->bit_depth);
+ row_info->bit_depth);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
return rgb_error;
}
#endif
+#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
+#ifdef PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
/* Build a grayscale palette. Palette is assumed to be 1 << bit_depth
* large of png_color. This lets grayscale images be treated as
* paletted. Most useful for gamma correction and simplification
- * of code.
+ * of code. This API is not used internally.
*/
void PNGAPI
png_build_grayscale_palette(int bit_depth, png_colorp palette)
@@ -2573,34 +3463,37 @@
palette[i].blue = (png_byte)v;
}
}
+#endif
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+#if (defined PNG_READ_BACKGROUND_SUPPORTED) ||\
+ (defined PNG_READ_ALPHA_MODE_SUPPORTED)
/* Replace any alpha or transparency with the supplied background color.
* "background" is already in the screen gamma, while "background_1" is
* at a gamma of 1.0. Paletted files have already been taken care of.
*/
void /* PRIVATE */
-png_do_background(png_row_infop row_info, png_bytep row,
- png_color_16p trans_color, png_color_16p background
-#ifdef PNG_READ_GAMMA_SUPPORTED
- , png_color_16p background_1,
- png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,
- png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1,
- png_uint_16pp gamma_16_to_1, int gamma_shift
-#endif
- )
+png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
{
- png_bytep sp, dp;
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ png_const_bytep gamma_table = png_ptr->gamma_table;
+ png_const_bytep gamma_from_1 = png_ptr->gamma_from_1;
+ png_const_bytep gamma_to_1 = png_ptr->gamma_to_1;
+ png_const_uint_16pp gamma_16 = png_ptr->gamma_16_table;
+ png_const_uint_16pp gamma_16_from_1 = png_ptr->gamma_16_from_1;
+ png_const_uint_16pp gamma_16_to_1 = png_ptr->gamma_16_to_1;
+ int gamma_shift = png_ptr->gamma_shift;
+#endif
+
+ png_bytep sp;
png_uint_32 i;
- png_uint_32 row_width=row_info->width;
+ png_uint_32 row_width = row_info->width;
+ int optimize = (png_ptr->flags & PNG_FLAG_OPTIMIZE_ALPHA) != 0;
int shift;
- png_debug(1, "in png_do_background");
+ png_debug(1, "in png_do_compose");
- if (background != NULL &&
- (!(row_info->color_type & PNG_COLOR_MASK_ALPHA) ||
- (row_info->color_type != PNG_COLOR_TYPE_PALETTE && trans_color)))
{
switch (row_info->color_type)
{
@@ -2615,16 +3508,18 @@
for (i = 0; i < row_width; i++)
{
if ((png_uint_16)((*sp >> shift) & 0x01)
- == trans_color->gray)
+ == png_ptr->trans_color.gray)
{
*sp &= (png_byte)((0x7f7f >> (7 - shift)) & 0xff);
- *sp |= (png_byte)(background->gray << shift);
+ *sp |= (png_byte)(png_ptr->background.gray << shift);
}
+
if (!shift)
{
shift = 7;
sp++;
}
+
else
shift--;
}
@@ -2641,11 +3536,12 @@
for (i = 0; i < row_width; i++)
{
if ((png_uint_16)((*sp >> shift) & 0x03)
- == trans_color->gray)
+ == png_ptr->trans_color.gray)
{
*sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
- *sp |= (png_byte)(background->gray << shift);
+ *sp |= (png_byte)(png_ptr->background.gray << shift);
}
+
else
{
png_byte p = (png_byte)((*sp >> shift) & 0x03);
@@ -2654,15 +3550,18 @@
*sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
*sp |= (png_byte)(g << shift);
}
+
if (!shift)
{
shift = 6;
sp++;
}
+
else
shift -= 2;
}
}
+
else
#endif
{
@@ -2671,16 +3570,18 @@
for (i = 0; i < row_width; i++)
{
if ((png_uint_16)((*sp >> shift) & 0x03)
- == trans_color->gray)
+ == png_ptr->trans_color.gray)
{
*sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
- *sp |= (png_byte)(background->gray << shift);
+ *sp |= (png_byte)(png_ptr->background.gray << shift);
}
+
if (!shift)
{
shift = 6;
sp++;
}
+
else
shift -= 2;
}
@@ -2698,28 +3599,32 @@
for (i = 0; i < row_width; i++)
{
if ((png_uint_16)((*sp >> shift) & 0x0f)
- == trans_color->gray)
+ == png_ptr->trans_color.gray)
{
*sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
- *sp |= (png_byte)(background->gray << shift);
+ *sp |= (png_byte)(png_ptr->background.gray << shift);
}
+
else
{
png_byte p = (png_byte)((*sp >> shift) & 0x0f);
png_byte g = (png_byte)((gamma_table[p |
- (p << 4)] >> 4) & 0x0f);
+ (p << 4)] >> 4) & 0x0f);
*sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
*sp |= (png_byte)(g << shift);
}
+
if (!shift)
{
shift = 4;
sp++;
}
+
else
shift -= 4;
}
}
+
else
#endif
{
@@ -2728,16 +3633,18 @@
for (i = 0; i < row_width; i++)
{
if ((png_uint_16)((*sp >> shift) & 0x0f)
- == trans_color->gray)
+ == png_ptr->trans_color.gray)
{
*sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
- *sp |= (png_byte)(background->gray << shift);
+ *sp |= (png_byte)(png_ptr->background.gray << shift);
}
+
if (!shift)
{
shift = 4;
sp++;
}
+
else
shift -= 4;
}
@@ -2753,14 +3660,11 @@
sp = row;
for (i = 0; i < row_width; i++, sp++)
{
- if (*sp == trans_color->gray)
- {
- *sp = (png_byte)background->gray;
- }
+ if (*sp == png_ptr->trans_color.gray)
+ *sp = (png_byte)png_ptr->background.gray;
+
else
- {
*sp = gamma_table[*sp];
- }
}
}
else
@@ -2769,10 +3673,8 @@
sp = row;
for (i = 0; i < row_width; i++, sp++)
{
- if (*sp == trans_color->gray)
- {
- *sp = (png_byte)background->gray;
- }
+ if (*sp == png_ptr->trans_color.gray)
+ *sp = (png_byte)png_ptr->background.gray;
}
}
break;
@@ -2789,12 +3691,14 @@
png_uint_16 v;
v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- if (v == trans_color->gray)
+
+ if (v == png_ptr->trans_color.gray)
{
/* Background is already in screen gamma */
- *sp = (png_byte)((background->gray >> 8) & 0xff);
- *(sp + 1) = (png_byte)(background->gray & 0xff);
+ *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
}
+
else
{
v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
@@ -2812,10 +3716,11 @@
png_uint_16 v;
v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- if (v == trans_color->gray)
+
+ if (v == png_ptr->trans_color.gray)
{
- *sp = (png_byte)((background->gray >> 8) & 0xff);
- *(sp + 1) = (png_byte)(background->gray & 0xff);
+ *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
}
}
}
@@ -2838,14 +3743,15 @@
sp = row;
for (i = 0; i < row_width; i++, sp += 3)
{
- if (*sp == trans_color->red &&
- *(sp + 1) == trans_color->green &&
- *(sp + 2) == trans_color->blue)
+ if (*sp == png_ptr->trans_color.red &&
+ *(sp + 1) == png_ptr->trans_color.green &&
+ *(sp + 2) == png_ptr->trans_color.blue)
{
- *sp = (png_byte)background->red;
- *(sp + 1) = (png_byte)background->green;
- *(sp + 2) = (png_byte)background->blue;
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
}
+
else
{
*sp = gamma_table[*sp];
@@ -2860,13 +3766,13 @@
sp = row;
for (i = 0; i < row_width; i++, sp += 3)
{
- if (*sp == trans_color->red &&
- *(sp + 1) == trans_color->green &&
- *(sp + 2) == trans_color->blue)
+ if (*sp == png_ptr->trans_color.red &&
+ *(sp + 1) == png_ptr->trans_color.green &&
+ *(sp + 2) == png_ptr->trans_color.blue)
{
- *sp = (png_byte)background->red;
- *(sp + 1) = (png_byte)background->green;
- *(sp + 2) = (png_byte)background->blue;
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
}
}
}
@@ -2880,52 +3786,67 @@
for (i = 0; i < row_width; i++, sp += 6)
{
png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- png_uint_16 g = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
- png_uint_16 b = (png_uint_16)(((*(sp+4)) << 8) + *(sp+5));
- if (r == trans_color->red && g == trans_color->green &&
- b == trans_color->blue)
+
+ png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+
+ png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
+ + *(sp + 5));
+
+ if (r == png_ptr->trans_color.red &&
+ g == png_ptr->trans_color.green &&
+ b == png_ptr->trans_color.blue)
{
/* Background is already in screen gamma */
- *sp = (png_byte)((background->red >> 8) & 0xff);
- *(sp + 1) = (png_byte)(background->red & 0xff);
- *(sp + 2) = (png_byte)((background->green >> 8) & 0xff);
- *(sp + 3) = (png_byte)(background->green & 0xff);
- *(sp + 4) = (png_byte)((background->blue >> 8) & 0xff);
- *(sp + 5) = (png_byte)(background->blue & 0xff);
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
}
+
else
{
png_uint_16 v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
*sp = (png_byte)((v >> 8) & 0xff);
*(sp + 1) = (png_byte)(v & 0xff);
+
v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
*(sp + 2) = (png_byte)((v >> 8) & 0xff);
*(sp + 3) = (png_byte)(v & 0xff);
+
v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
*(sp + 4) = (png_byte)((v >> 8) & 0xff);
*(sp + 5) = (png_byte)(v & 0xff);
}
}
}
+
else
#endif
{
sp = row;
for (i = 0; i < row_width; i++, sp += 6)
{
- png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp+1));
- png_uint_16 g = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
- png_uint_16 b = (png_uint_16)(((*(sp+4)) << 8) + *(sp+5));
+ png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- if (r == trans_color->red && g == trans_color->green &&
- b == trans_color->blue)
+ png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+
+ png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
+ + *(sp + 5));
+
+ if (r == png_ptr->trans_color.red &&
+ g == png_ptr->trans_color.green &&
+ b == png_ptr->trans_color.blue)
{
- *sp = (png_byte)((background->red >> 8) & 0xff);
- *(sp + 1) = (png_byte)(background->red & 0xff);
- *(sp + 2) = (png_byte)((background->green >> 8) & 0xff);
- *(sp + 3) = (png_byte)(background->green & 0xff);
- *(sp + 4) = (png_byte)((background->blue >> 8) & 0xff);
- *(sp + 5) = (png_byte)(background->blue & 0xff);
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
}
}
}
@@ -2942,27 +3863,28 @@
gamma_table != NULL)
{
sp = row;
- dp = row;
- for (i = 0; i < row_width; i++, sp += 2, dp++)
+ for (i = 0; i < row_width; i++, sp += 2)
{
png_uint_16 a = *(sp + 1);
if (a == 0xff)
- {
- *dp = gamma_table[*sp];
- }
+ *sp = gamma_table[*sp];
+
else if (a == 0)
{
/* Background is already in screen gamma */
- *dp = (png_byte)background->gray;
+ *sp = (png_byte)png_ptr->background.gray;
}
+
else
{
png_byte v, w;
v = gamma_to_1[*sp];
- png_composite(w, v, a, background_1->gray);
- *dp = gamma_from_1[w];
+ png_composite(w, v, a, png_ptr->background_1.gray);
+ if (!optimize)
+ w = gamma_from_1[w];
+ *sp = w;
}
}
}
@@ -2970,27 +3892,15 @@
#endif
{
sp = row;
- dp = row;
- for (i = 0; i < row_width; i++, sp += 2, dp++)
+ for (i = 0; i < row_width; i++, sp += 2)
{
png_byte a = *(sp + 1);
- if (a == 0xff)
- {
- *dp = *sp;
- }
-#ifdef PNG_READ_GAMMA_SUPPORTED
- else if (a == 0)
- {
- *dp = (png_byte)background->gray;
- }
- else
- {
- png_composite(*dp, *sp, a, background_1->gray);
- }
-#else
- *dp = (png_byte)background->gray;
-#endif
+ if (a == 0)
+ *sp = (png_byte)png_ptr->background.gray;
+
+ else if (a < 0xff)
+ png_composite(*sp, *sp, a, png_ptr->background_1.gray);
}
}
}
@@ -3001,75 +3911,66 @@
gamma_16_to_1 != NULL)
{
sp = row;
- dp = row;
- for (i = 0; i < row_width; i++, sp += 4, dp += 2)
+ for (i = 0; i < row_width; i++, sp += 4)
{
- png_uint_16 a = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
+ png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
if (a == (png_uint_16)0xffff)
{
png_uint_16 v;
v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
- *dp = (png_byte)((v >> 8) & 0xff);
- *(dp + 1) = (png_byte)(v & 0xff);
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
}
-#ifdef PNG_READ_GAMMA_SUPPORTED
+
else if (a == 0)
-#else
- else
-#endif
{
/* Background is already in screen gamma */
- *dp = (png_byte)((background->gray >> 8) & 0xff);
- *(dp + 1) = (png_byte)(background->gray & 0xff);
+ *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
}
-#ifdef PNG_READ_GAMMA_SUPPORTED
+
else
{
png_uint_16 g, v, w;
g = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
- png_composite_16(v, g, a, background_1->gray);
- w = gamma_16_from_1[(v&0xff) >> gamma_shift][v >> 8];
- *dp = (png_byte)((w >> 8) & 0xff);
- *(dp + 1) = (png_byte)(w & 0xff);
+ png_composite_16(v, g, a, png_ptr->background_1.gray);
+ if (optimize)
+ w = v;
+ else
+ w = gamma_16_from_1[(v&0xff) >> gamma_shift][v >> 8];
+ *sp = (png_byte)((w >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(w & 0xff);
}
-#endif
}
}
else
#endif
{
sp = row;
- dp = row;
- for (i = 0; i < row_width; i++, sp += 4, dp += 2)
+ for (i = 0; i < row_width; i++, sp += 4)
{
- png_uint_16 a = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
- if (a == (png_uint_16)0xffff)
+ png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+
+ if (a == 0)
{
- png_memcpy(dp, sp, 2);
+ *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
}
-#ifdef PNG_READ_GAMMA_SUPPORTED
- else if (a == 0)
-#else
- else
-#endif
- {
- *dp = (png_byte)((background->gray >> 8) & 0xff);
- *(dp + 1) = (png_byte)(background->gray & 0xff);
- }
-#ifdef PNG_READ_GAMMA_SUPPORTED
- else
+
+ else if (a < 0xffff)
{
png_uint_16 g, v;
g = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- png_composite_16(v, g, a, background_1->gray);
- *dp = (png_byte)((v >> 8) & 0xff);
- *(dp + 1) = (png_byte)(v & 0xff);
+ png_composite_16(v, g, a, png_ptr->background_1.gray);
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
}
-#endif
}
}
}
@@ -3085,37 +3986,43 @@
gamma_table != NULL)
{
sp = row;
- dp = row;
- for (i = 0; i < row_width; i++, sp += 4, dp += 3)
+ for (i = 0; i < row_width; i++, sp += 4)
{
png_byte a = *(sp + 3);
if (a == 0xff)
{
- *dp = gamma_table[*sp];
- *(dp + 1) = gamma_table[*(sp + 1)];
- *(dp + 2) = gamma_table[*(sp + 2)];
+ *sp = gamma_table[*sp];
+ *(sp + 1) = gamma_table[*(sp + 1)];
+ *(sp + 2) = gamma_table[*(sp + 2)];
}
+
else if (a == 0)
{
/* Background is already in screen gamma */
- *dp = (png_byte)background->red;
- *(dp + 1) = (png_byte)background->green;
- *(dp + 2) = (png_byte)background->blue;
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
}
+
else
{
png_byte v, w;
v = gamma_to_1[*sp];
- png_composite(w, v, a, background_1->red);
- *dp = gamma_from_1[w];
+ png_composite(w, v, a, png_ptr->background_1.red);
+ if (!optimize) w = gamma_from_1[w];
+ *sp = w;
+
v = gamma_to_1[*(sp + 1)];
- png_composite(w, v, a, background_1->green);
- *(dp + 1) = gamma_from_1[w];
+ png_composite(w, v, a, png_ptr->background_1.green);
+ if (!optimize) w = gamma_from_1[w];
+ *(sp + 1) = w;
+
v = gamma_to_1[*(sp + 2)];
- png_composite(w, v, a, background_1->blue);
- *(dp + 2) = gamma_from_1[w];
+ png_composite(w, v, a, png_ptr->background_1.blue);
+ if (!optimize) w = gamma_from_1[w];
+ *(sp + 2) = w;
}
}
}
@@ -3123,30 +4030,26 @@
#endif
{
sp = row;
- dp = row;
- for (i = 0; i < row_width; i++, sp += 4, dp += 3)
+ for (i = 0; i < row_width; i++, sp += 4)
{
png_byte a = *(sp + 3);
- if (a == 0xff)
+ if (a == 0)
{
- *dp = *sp;
- *(dp + 1) = *(sp + 1);
- *(dp + 2) = *(sp + 2);
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
}
- else if (a == 0)
+
+ else if (a < 0xff)
{
- *dp = (png_byte)background->red;
- *(dp + 1) = (png_byte)background->green;
- *(dp + 2) = (png_byte)background->blue;
- }
- else
- {
- png_composite(*dp, *sp, a, background->red);
- png_composite(*(dp + 1), *(sp + 1), a,
- background->green);
- png_composite(*(dp + 2), *(sp + 2), a,
- background->blue);
+ png_composite(*sp, *sp, a, png_ptr->background.red);
+
+ png_composite(*(sp + 1), *(sp + 1), a,
+ png_ptr->background.green);
+
+ png_composite(*(sp + 2), *(sp + 2), a,
+ png_ptr->background.blue);
}
}
}
@@ -3158,80 +4061,89 @@
gamma_16_to_1 != NULL)
{
sp = row;
- dp = row;
- for (i = 0; i < row_width; i++, sp += 8, dp += 6)
+ for (i = 0; i < row_width; i++, sp += 8)
{
png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
<< 8) + (png_uint_16)(*(sp + 7)));
+
if (a == (png_uint_16)0xffff)
{
png_uint_16 v;
v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
- *dp = (png_byte)((v >> 8) & 0xff);
- *(dp + 1) = (png_byte)(v & 0xff);
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+
v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
- *(dp + 2) = (png_byte)((v >> 8) & 0xff);
- *(dp + 3) = (png_byte)(v & 0xff);
+ *(sp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(v & 0xff);
+
v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
- *(dp + 4) = (png_byte)((v >> 8) & 0xff);
- *(dp + 5) = (png_byte)(v & 0xff);
+ *(sp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(v & 0xff);
}
+
else if (a == 0)
{
/* Background is already in screen gamma */
- *dp = (png_byte)((background->red >> 8) & 0xff);
- *(dp + 1) = (png_byte)(background->red & 0xff);
- *(dp + 2) = (png_byte)((background->green >> 8) & 0xff);
- *(dp + 3) = (png_byte)(background->green & 0xff);
- *(dp + 4) = (png_byte)((background->blue >> 8) & 0xff);
- *(dp + 5) = (png_byte)(background->blue & 0xff);
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
}
+
else
{
- png_uint_16 v, w, x;
+ png_uint_16 v, w;
v = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
- png_composite_16(w, v, a, background_1->red);
- x = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
- *dp = (png_byte)((x >> 8) & 0xff);
- *(dp + 1) = (png_byte)(x & 0xff);
+ png_composite_16(w, v, a, png_ptr->background_1.red);
+ if (!optimize)
+ w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
+ *sp = (png_byte)((w >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(w & 0xff);
+
v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)];
- png_composite_16(w, v, a, background_1->green);
- x = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
- *(dp + 2) = (png_byte)((x >> 8) & 0xff);
- *(dp + 3) = (png_byte)(x & 0xff);
+ png_composite_16(w, v, a, png_ptr->background_1.green);
+ if (!optimize)
+ w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
+
+ *(sp + 2) = (png_byte)((w >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(w & 0xff);
+
v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)];
- png_composite_16(w, v, a, background_1->blue);
- x = gamma_16_from_1[(w & 0xff) >> gamma_shift][w >> 8];
- *(dp + 4) = (png_byte)((x >> 8) & 0xff);
- *(dp + 5) = (png_byte)(x & 0xff);
+ png_composite_16(w, v, a, png_ptr->background_1.blue);
+ if (!optimize)
+ w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
+
+ *(sp + 4) = (png_byte)((w >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(w & 0xff);
}
}
}
+
else
#endif
{
sp = row;
- dp = row;
- for (i = 0; i < row_width; i++, sp += 8, dp += 6)
+ for (i = 0; i < row_width; i++, sp += 8)
{
png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
- << 8) + (png_uint_16)(*(sp + 7)));
- if (a == (png_uint_16)0xffff)
+ << 8) + (png_uint_16)(*(sp + 7)));
+
+ if (a == 0)
{
- png_memcpy(dp, sp, 6);
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
}
- else if (a == 0)
- {
- *dp = (png_byte)((background->red >> 8) & 0xff);
- *(dp + 1) = (png_byte)(background->red & 0xff);
- *(dp + 2) = (png_byte)((background->green >> 8) & 0xff);
- *(dp + 3) = (png_byte)(background->green & 0xff);
- *(dp + 4) = (png_byte)((background->blue >> 8) & 0xff);
- *(dp + 5) = (png_byte)(background->blue & 0xff);
- }
- else
+
+ else if (a < 0xffff)
{
png_uint_16 v;
@@ -3241,15 +4153,17 @@
png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
+ *(sp + 5));
- png_composite_16(v, r, a, background->red);
- *dp = (png_byte)((v >> 8) & 0xff);
- *(dp + 1) = (png_byte)(v & 0xff);
- png_composite_16(v, g, a, background->green);
- *(dp + 2) = (png_byte)((v >> 8) & 0xff);
- *(dp + 3) = (png_byte)(v & 0xff);
- png_composite_16(v, b, a, background->blue);
- *(dp + 4) = (png_byte)((v >> 8) & 0xff);
- *(dp + 5) = (png_byte)(v & 0xff);
+ png_composite_16(v, r, a, png_ptr->background.red);
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+
+ png_composite_16(v, g, a, png_ptr->background.green);
+ *(sp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(v & 0xff);
+
+ png_composite_16(v, b, a, png_ptr->background.blue);
+ *(sp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(v & 0xff);
}
}
}
@@ -3260,18 +4174,9 @@
default:
break;
}
-
- if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
- {
- row_info->color_type &= ~PNG_COLOR_MASK_ALPHA;
- row_info->channels--;
- row_info->pixel_depth = (png_byte)(row_info->channels *
- row_info->bit_depth);
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
- }
}
}
-#endif
+#endif /* PNG_READ_BACKGROUND_SUPPORTED || PNG_READ_ALPHA_MODE_SUPPORTED */
#ifdef PNG_READ_GAMMA_SUPPORTED
/* Gamma correct the image, avoiding the alpha channel. Make sure
@@ -3281,19 +4186,20 @@
* build_gamma_table().
*/
void /* PRIVATE */
-png_do_gamma(png_row_infop row_info, png_bytep row,
- png_bytep gamma_table, png_uint_16pp gamma_16_table,
- int gamma_shift)
+png_do_gamma(png_row_infop row_info, png_bytep row, png_structp png_ptr)
{
+ png_const_bytep gamma_table = png_ptr->gamma_table;
+ png_const_uint_16pp gamma_16_table = png_ptr->gamma_16_table;
+ int gamma_shift = png_ptr->gamma_shift;
+
png_bytep sp;
png_uint_32 i;
png_uint_32 row_width=row_info->width;
png_debug(1, "in png_do_gamma");
- if (
- ((row_info->bit_depth <= 8 && gamma_table != NULL) ||
- (row_info->bit_depth == 16 && gamma_16_table != NULL)))
+ if (((row_info->bit_depth <= 8 && gamma_table != NULL) ||
+ (row_info->bit_depth == 16 && gamma_16_table != NULL)))
{
switch (row_info->color_type)
{
@@ -3312,6 +4218,7 @@
sp++;
}
}
+
else /* if (row_info->bit_depth == 16) */
{
sp = row;
@@ -3323,10 +4230,12 @@
*sp = (png_byte)((v >> 8) & 0xff);
*(sp + 1) = (png_byte)(v & 0xff);
sp += 2;
+
v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
*sp = (png_byte)((v >> 8) & 0xff);
*(sp + 1) = (png_byte)(v & 0xff);
sp += 2;
+
v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
*sp = (png_byte)((v >> 8) & 0xff);
*(sp + 1) = (png_byte)(v & 0xff);
@@ -3345,13 +4254,17 @@
{
*sp = gamma_table[*sp];
sp++;
+
*sp = gamma_table[*sp];
sp++;
+
*sp = gamma_table[*sp];
sp++;
+
sp++;
}
}
+
else /* if (row_info->bit_depth == 16) */
{
sp = row;
@@ -3361,10 +4274,12 @@
*sp = (png_byte)((v >> 8) & 0xff);
*(sp + 1) = (png_byte)(v & 0xff);
sp += 2;
+
v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
*sp = (png_byte)((v >> 8) & 0xff);
*(sp + 1) = (png_byte)(v & 0xff);
sp += 2;
+
v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
*sp = (png_byte)((v >> 8) & 0xff);
*(sp + 1) = (png_byte)(v & 0xff);
@@ -3385,6 +4300,7 @@
sp += 2;
}
}
+
else /* if (row_info->bit_depth == 16) */
{
sp = row;
@@ -3465,13 +4381,80 @@
}
#endif
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+/* Encode the alpha channel to the output gamma (the input channel is always
+ * linear.) Called only with color types that have an alpha channel. Needs the
+ * from_1 tables.
+ */
+void /* PRIVATE */
+png_do_encode_alpha(png_row_infop row_info, png_bytep row, png_structp png_ptr)
+{
+ png_uint_32 row_width = row_info->width;
+
+ png_debug(1, "in png_do_encode_alpha");
+
+ if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ PNG_CONST png_bytep table = png_ptr->gamma_from_1;
+
+ if (table != NULL)
+ {
+ PNG_CONST int step =
+ (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 4 : 2;
+
+ /* The alpha channel is the last component: */
+ row += step - 1;
+
+ for (; row_width > 0; --row_width, row += step)
+ *row = table[*row];
+
+ return;
+ }
+ }
+
+ else if (row_info->bit_depth == 16)
+ {
+ PNG_CONST png_uint_16pp table = png_ptr->gamma_16_from_1;
+ PNG_CONST int gamma_shift = png_ptr->gamma_shift;
+
+ if (table != NULL)
+ {
+ PNG_CONST int step =
+ (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 8 : 4;
+
+ /* The alpha channel is the last component: */
+ row += step - 2;
+
+ for (; row_width > 0; --row_width, row += step)
+ {
+ png_uint_16 v;
+
+ v = table[*(row + 1) >> gamma_shift][*row];
+ *row = (png_byte)((v >> 8) & 0xff);
+ *(row + 1) = (png_byte)(v & 0xff);
+ }
+
+ return;
+ }
+ }
+ }
+
+ /* Only get to here if called with a weird row_info; no harm has been done,
+ * so just issue a warning.
+ */
+ png_warning(png_ptr, "png_do_encode_alpha: unexpected call");
+}
+#endif
+
#ifdef PNG_READ_EXPAND_SUPPORTED
/* Expands a palette row to an RGB or RGBA row depending
* upon whether you supply trans and num_trans.
*/
void /* PRIVATE */
png_do_expand_palette(png_row_infop row_info, png_bytep row,
- png_colorp palette, png_bytep trans_alpha, int num_trans)
+ png_const_colorp palette, png_const_bytep trans_alpha, int num_trans)
{
int shift, value;
png_bytep sp, dp;
@@ -3480,8 +4463,7 @@
png_debug(1, "in png_do_expand_palette");
- if (
- row_info->color_type == PNG_COLOR_TYPE_PALETTE)
+ if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (row_info->bit_depth < 8)
{
@@ -3496,13 +4478,16 @@
{
if ((*sp >> shift) & 0x01)
*dp = 1;
+
else
*dp = 0;
+
if (shift == 7)
{
shift = 0;
sp--;
}
+
else
shift++;
@@ -3525,6 +4510,7 @@
shift = 0;
sp--;
}
+
else
shift += 2;
@@ -3547,6 +4533,7 @@
shift = 0;
sp--;
}
+
else
shift += 4;
@@ -3562,11 +4549,11 @@
row_info->pixel_depth = 8;
row_info->rowbytes = row_width;
}
- switch (row_info->bit_depth)
+
+ if (row_info->bit_depth == 8)
{
- case 8:
{
- if (trans_alpha != NULL)
+ if (num_trans > 0)
{
sp = row + (png_size_t)row_width - 1;
dp = row + (png_size_t)(row_width << 2) - 1;
@@ -3575,8 +4562,10 @@
{
if ((int)(*sp) >= num_trans)
*dp-- = 0xff;
+
else
*dp-- = trans_alpha[*sp];
+
*dp-- = palette[*sp].blue;
*dp-- = palette[*sp].green;
*dp-- = palette[*sp].red;
@@ -3588,6 +4577,7 @@
row_info->color_type = 6;
row_info->channels = 4;
}
+
else
{
sp = row + (png_size_t)row_width - 1;
@@ -3607,7 +4597,6 @@
row_info->color_type = 2;
row_info->channels = 3;
}
- break;
}
}
}
@@ -3618,7 +4607,7 @@
*/
void /* PRIVATE */
png_do_expand(png_row_infop row_info, png_bytep row,
- png_color_16p trans_value)
+ png_const_color_16p trans_color)
{
int shift, value;
png_bytep sp, dp;
@@ -3630,7 +4619,7 @@
{
if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
- png_uint_16 gray = (png_uint_16)(trans_value ? trans_value->gray : 0);
+ png_uint_16 gray = (png_uint_16)(trans_color ? trans_color->gray : 0);
if (row_info->bit_depth < 8)
{
@@ -3638,7 +4627,7 @@
{
case 1:
{
- gray = (png_uint_16)((gray&0x01)*0xff);
+ gray = (png_uint_16)((gray & 0x01) * 0xff);
sp = row + (png_size_t)((row_width - 1) >> 3);
dp = row + (png_size_t)row_width - 1;
shift = 7 - (int)((row_width + 7) & 0x07);
@@ -3646,13 +4635,16 @@
{
if ((*sp >> shift) & 0x01)
*dp = 0xff;
+
else
*dp = 0;
+
if (shift == 7)
{
shift = 0;
sp--;
}
+
else
shift++;
@@ -3663,7 +4655,7 @@
case 2:
{
- gray = (png_uint_16)((gray&0x03)*0x55);
+ gray = (png_uint_16)((gray & 0x03) * 0x55);
sp = row + (png_size_t)((row_width - 1) >> 2);
dp = row + (png_size_t)row_width - 1;
shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
@@ -3677,6 +4669,7 @@
shift = 0;
sp--;
}
+
else
shift += 2;
@@ -3687,7 +4680,7 @@
case 4:
{
- gray = (png_uint_16)((gray&0x0f)*0x11);
+ gray = (png_uint_16)((gray & 0x0f) * 0x11);
sp = row + (png_size_t)((row_width - 1) >> 1);
dp = row + (png_size_t)row_width - 1;
shift = (int)((1 - ((row_width + 1) & 0x01)) << 2);
@@ -3700,6 +4693,7 @@
shift = 0;
sp--;
}
+
else
shift = 4;
@@ -3717,27 +4711,30 @@
row_info->rowbytes = row_width;
}
- if (trans_value != NULL)
+ if (trans_color != NULL)
{
if (row_info->bit_depth == 8)
{
gray = gray & 0xff;
sp = row + (png_size_t)row_width - 1;
dp = row + (png_size_t)(row_width << 1) - 1;
+
for (i = 0; i < row_width; i++)
{
if (*sp == gray)
*dp-- = 0;
+
else
*dp-- = 0xff;
+
*dp-- = *sp--;
}
}
else if (row_info->bit_depth == 16)
{
- png_byte gray_high = (gray >> 8) & 0xff;
- png_byte gray_low = gray & 0xff;
+ png_byte gray_high = (png_byte)((gray >> 8) & 0xff);
+ png_byte gray_low = (png_byte)(gray & 0xff);
sp = row + row_info->rowbytes - 1;
dp = row + (row_info->rowbytes << 1) - 1;
for (i = 0; i < row_width; i++)
@@ -3747,11 +4744,13 @@
*dp-- = 0;
*dp-- = 0;
}
+
else
{
*dp-- = 0xff;
*dp-- = 0xff;
}
+
*dp-- = *sp--;
*dp-- = *sp--;
}
@@ -3764,21 +4763,23 @@
row_width);
}
}
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB && trans_value)
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB && trans_color)
{
if (row_info->bit_depth == 8)
{
- png_byte red = trans_value->red & 0xff;
- png_byte green = trans_value->green & 0xff;
- png_byte blue = trans_value->blue & 0xff;
+ png_byte red = (png_byte)(trans_color->red & 0xff);
+ png_byte green = (png_byte)(trans_color->green & 0xff);
+ png_byte blue = (png_byte)(trans_color->blue & 0xff);
sp = row + (png_size_t)row_info->rowbytes - 1;
dp = row + (png_size_t)(row_width << 2) - 1;
for (i = 0; i < row_width; i++)
{
if (*(sp - 2) == red && *(sp - 1) == green && *(sp) == blue)
*dp-- = 0;
+
else
*dp-- = 0xff;
+
*dp-- = *sp--;
*dp-- = *sp--;
*dp-- = *sp--;
@@ -3786,31 +4787,33 @@
}
else if (row_info->bit_depth == 16)
{
- png_byte red_high = (trans_value->red >> 8) & 0xff;
- png_byte green_high = (trans_value->green >> 8) & 0xff;
- png_byte blue_high = (trans_value->blue >> 8) & 0xff;
- png_byte red_low = trans_value->red & 0xff;
- png_byte green_low = trans_value->green & 0xff;
- png_byte blue_low = trans_value->blue & 0xff;
+ png_byte red_high = (png_byte)((trans_color->red >> 8) & 0xff);
+ png_byte green_high = (png_byte)((trans_color->green >> 8) & 0xff);
+ png_byte blue_high = (png_byte)((trans_color->blue >> 8) & 0xff);
+ png_byte red_low = (png_byte)(trans_color->red & 0xff);
+ png_byte green_low = (png_byte)(trans_color->green & 0xff);
+ png_byte blue_low = (png_byte)(trans_color->blue & 0xff);
sp = row + row_info->rowbytes - 1;
dp = row + (png_size_t)(row_width << 3) - 1;
for (i = 0; i < row_width; i++)
{
if (*(sp - 5) == red_high &&
- *(sp - 4) == red_low &&
- *(sp - 3) == green_high &&
- *(sp - 2) == green_low &&
- *(sp - 1) == blue_high &&
- *(sp ) == blue_low)
+ *(sp - 4) == red_low &&
+ *(sp - 3) == green_high &&
+ *(sp - 2) == green_low &&
+ *(sp - 1) == blue_high &&
+ *(sp ) == blue_low)
{
*dp-- = 0;
*dp-- = 0;
}
+
else
{
*dp-- = 0xff;
*dp-- = 0xff;
}
+
*dp-- = *sp--;
*dp-- = *sp--;
*dp-- = *sp--;
@@ -3828,10 +4831,41 @@
}
#endif
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+/* If the bit depth is 8 and the color type is not a palette type expand the
+ * whole row to 16 bits. Has no effect otherwise.
+ */
+void /* PRIVATE */
+png_do_expand_16(png_row_infop row_info, png_bytep row)
+{
+ if (row_info->bit_depth == 8 &&
+ row_info->color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ /* The row have a sequence of bytes containing [0..255] and we need
+ * to turn it into another row containing [0..65535], to do this we
+ * calculate:
+ *
+ * (input / 255) * 65535
+ *
+ * Which happens to be exactly input * 257 and this can be achieved
+ * simply by byte replication in place (copying backwards).
+ */
+ png_byte *sp = row + row_info->rowbytes; /* source, last byte + 1 */
+ png_byte *dp = sp + row_info->rowbytes; /* destination, end + 1 */
+ while (dp > sp)
+ dp[-2] = dp[-1] = *--sp, dp -= 2;
+
+ row_info->rowbytes *= 2;
+ row_info->bit_depth = 16;
+ row_info->pixel_depth = (png_byte)(row_info->channels * 16);
+ }
+}
+#endif
+
#ifdef PNG_READ_QUANTIZE_SUPPORTED
void /* PRIVATE */
png_do_quantize(png_row_infop row_info, png_bytep row,
- png_bytep palette_lookup, png_bytep quantize_lookup)
+ png_const_bytep palette_lookup, png_const_bytep quantize_lookup)
{
png_bytep sp, dp;
png_uint_32 i;
@@ -3839,9 +4873,9 @@
png_debug(1, "in png_do_quantize");
+ if (row_info->bit_depth == 8)
{
- if (row_info->color_type == PNG_COLOR_TYPE_RGB &&
- palette_lookup && row_info->bit_depth == 8)
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB && palette_lookup)
{
int r, g, b, p;
sp = row;
@@ -3860,23 +4894,25 @@
* ((b >> 3) & 0x1f);
*/
p = (((r >> (8 - PNG_QUANTIZE_RED_BITS)) &
- ((1 << PNG_QUANTIZE_RED_BITS) - 1)) <<
- (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) |
- (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) &
- ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) <<
- (PNG_QUANTIZE_BLUE_BITS)) |
- ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) &
- ((1 << PNG_QUANTIZE_BLUE_BITS) - 1));
+ ((1 << PNG_QUANTIZE_RED_BITS) - 1)) <<
+ (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) |
+ (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) &
+ ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) <<
+ (PNG_QUANTIZE_BLUE_BITS)) |
+ ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) &
+ ((1 << PNG_QUANTIZE_BLUE_BITS) - 1));
*dp++ = palette_lookup[p];
}
+
row_info->color_type = PNG_COLOR_TYPE_PALETTE;
row_info->channels = 1;
row_info->pixel_depth = row_info->bit_depth;
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
+
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
- palette_lookup != NULL && row_info->bit_depth == 8)
+ palette_lookup != NULL)
{
int r, g, b, p;
sp = row;
@@ -3889,25 +4925,28 @@
sp++;
p = (((r >> (8 - PNG_QUANTIZE_RED_BITS)) &
- ((1 << PNG_QUANTIZE_RED_BITS) - 1)) <<
- (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) |
- (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) &
- ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) <<
- (PNG_QUANTIZE_BLUE_BITS)) |
- ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) &
- ((1 << PNG_QUANTIZE_BLUE_BITS) - 1));
+ ((1 << PNG_QUANTIZE_RED_BITS) - 1)) <<
+ (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) |
+ (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) &
+ ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) <<
+ (PNG_QUANTIZE_BLUE_BITS)) |
+ ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) &
+ ((1 << PNG_QUANTIZE_BLUE_BITS) - 1));
*dp++ = palette_lookup[p];
}
+
row_info->color_type = PNG_COLOR_TYPE_PALETTE;
row_info->channels = 1;
row_info->pixel_depth = row_info->bit_depth;
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
+
else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&
- quantize_lookup && row_info->bit_depth == 8)
+ quantize_lookup)
{
sp = row;
+
for (i = 0; i < row_width; i++, sp++)
{
*sp = quantize_lookup[*sp];
@@ -3915,266 +4954,8 @@
}
}
}
-#endif
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-#ifdef PNG_READ_GAMMA_SUPPORTED
-static PNG_CONST int png_gamma_shift[] =
- {0x10, 0x21, 0x42, 0x84, 0x110, 0x248, 0x550, 0xff0, 0x00};
-
-/* We build the 8- or 16-bit gamma tables here. Note that for 16-bit
- * tables, we don't make a full table if we are reducing to 8-bit in
- * the future. Note also how the gamma_16 tables are segmented so that
- * we don't need to allocate > 64K chunks for a full 16-bit table.
- *
- * See the PNG extensions document for an integer algorithm for creating
- * the gamma tables. Maybe we will implement that here someday.
- *
- * We should only reach this point if
- *
- * the file_gamma is known (i.e., the gAMA or sRGB chunk is present,
- * or the application has provided a file_gamma)
- *
- * AND
- * {
- * the screen_gamma is known
- *
- * OR
- *
- * RGB_to_gray transformation is being performed
- * }
- *
- * AND
- * {
- * the screen_gamma is different from the reciprocal of the
- * file_gamma by more than the specified threshold
- *
- * OR
- *
- * a background color has been specified and the file_gamma
- * and screen_gamma are not 1.0, within the specified threshold.
- * }
- */
-
-void /* PRIVATE */
-png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
-{
- png_debug(1, "in png_build_gamma_table");
-
- if (bit_depth <= 8)
- {
- int i;
- double g;
-
- if (png_ptr->screen_gamma > .000001)
- g = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma);
-
- else
- g = 1.0;
-
- png_ptr->gamma_table = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)256);
-
- for (i = 0; i < 256; i++)
- {
- png_ptr->gamma_table[i] = (png_byte)(pow((double)i / 255.0,
- g) * 255.0 + .5);
- }
-
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
- defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
- if (png_ptr->transformations & ((PNG_BACKGROUND) | PNG_RGB_TO_GRAY))
- {
-
- g = 1.0 / (png_ptr->gamma);
-
- png_ptr->gamma_to_1 = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)256);
-
- for (i = 0; i < 256; i++)
- {
- png_ptr->gamma_to_1[i] = (png_byte)(pow((double)i / 255.0,
- g) * 255.0 + .5);
- }
-
-
- png_ptr->gamma_from_1 = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)256);
-
- if (png_ptr->screen_gamma > 0.000001)
- g = 1.0 / png_ptr->screen_gamma;
-
- else
- g = png_ptr->gamma; /* Probably doing rgb_to_gray */
-
- for (i = 0; i < 256; i++)
- {
- png_ptr->gamma_from_1[i] = (png_byte)(pow((double)i / 255.0,
- g) * 255.0 + .5);
-
- }
- }
-#endif /* PNG_READ_BACKGROUND_SUPPORTED || PNG_RGB_TO_GRAY_SUPPORTED */
- }
- else
- {
- double g;
- int i, j, shift, num;
- int sig_bit;
- png_uint_32 ig;
-
- if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
- {
- sig_bit = (int)png_ptr->sig_bit.red;
-
- if ((int)png_ptr->sig_bit.green > sig_bit)
- sig_bit = png_ptr->sig_bit.green;
-
- if ((int)png_ptr->sig_bit.blue > sig_bit)
- sig_bit = png_ptr->sig_bit.blue;
- }
- else
- {
- sig_bit = (int)png_ptr->sig_bit.gray;
- }
-
- if (sig_bit > 0)
- shift = 16 - sig_bit;
-
- else
- shift = 0;
-
- if (png_ptr->transformations & PNG_16_TO_8)
- {
- if (shift < (16 - PNG_MAX_GAMMA_8))
- shift = (16 - PNG_MAX_GAMMA_8);
- }
-
- if (shift > 8)
- shift = 8;
-
- if (shift < 0)
- shift = 0;
-
- png_ptr->gamma_shift = (png_byte)shift;
-
- num = (1 << (8 - shift));
-
- if (png_ptr->screen_gamma > .000001)
- g = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma);
- else
- g = 1.0;
-
- png_ptr->gamma_16_table = (png_uint_16pp)png_calloc(png_ptr,
- (png_uint_32)(num * png_sizeof(png_uint_16p)));
-
- if (png_ptr->transformations & (PNG_16_TO_8 | PNG_BACKGROUND))
- {
- double fin, fout;
- png_uint_32 last, max;
-
- for (i = 0; i < num; i++)
- {
- png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)(256 * png_sizeof(png_uint_16)));
- }
-
- g = 1.0 / g;
- last = 0;
- for (i = 0; i < 256; i++)
- {
- fout = ((double)i + 0.5) / 256.0;
- fin = pow(fout, g);
- max = (png_uint_32)(fin * (double)((png_uint_32)num << 8));
- while (last <= max)
- {
- png_ptr->gamma_16_table[(int)(last & (0xff >> shift))]
- [(int)(last >> (8 - shift))] = (png_uint_16)(
- (png_uint_16)i | ((png_uint_16)i << 8));
- last++;
- }
- }
- while (last < ((png_uint_32)num << 8))
- {
- png_ptr->gamma_16_table[(int)(last & (0xff >> shift))]
- [(int)(last >> (8 - shift))] = (png_uint_16)65535L;
- last++;
- }
- }
- else
- {
- for (i = 0; i < num; i++)
- {
- png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)(256 * png_sizeof(png_uint_16)));
-
- ig = (((png_uint_32)i * (png_uint_32)png_gamma_shift[shift]) >> 4);
-
- for (j = 0; j < 256; j++)
- {
- png_ptr->gamma_16_table[i][j] =
- (png_uint_16)(pow((double)(ig + ((png_uint_32)j << 8)) /
- 65535.0, g) * 65535.0 + .5);
- }
- }
- }
-
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
- defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
- if (png_ptr->transformations & (PNG_BACKGROUND | PNG_RGB_TO_GRAY))
- {
-
- g = 1.0 / (png_ptr->gamma);
-
- png_ptr->gamma_16_to_1 = (png_uint_16pp)png_calloc(png_ptr,
- (png_uint_32)(num * png_sizeof(png_uint_16p )));
-
- for (i = 0; i < num; i++)
- {
- png_ptr->gamma_16_to_1[i] = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)(256 * png_sizeof(png_uint_16)));
-
- ig = (((png_uint_32)i *
- (png_uint_32)png_gamma_shift[shift]) >> 4);
- for (j = 0; j < 256; j++)
- {
- png_ptr->gamma_16_to_1[i][j] =
- (png_uint_16)(pow((double)(ig + ((png_uint_32)j << 8)) /
- 65535.0, g) * 65535.0 + .5);
- }
- }
-
- if (png_ptr->screen_gamma > 0.000001)
- g = 1.0 / png_ptr->screen_gamma;
-
- else
- g = png_ptr->gamma; /* Probably doing rgb_to_gray */
-
- png_ptr->gamma_16_from_1 = (png_uint_16pp)png_calloc(png_ptr,
- (png_uint_32)(num * png_sizeof(png_uint_16p)));
-
- for (i = 0; i < num; i++)
- {
- png_ptr->gamma_16_from_1[i] = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)(256 * png_sizeof(png_uint_16)));
-
- ig = (((png_uint_32)i *
- (png_uint_32)png_gamma_shift[shift]) >> 4);
-
- for (j = 0; j < 256; j++)
- {
- png_ptr->gamma_16_from_1[i][j] =
- (png_uint_16)(pow((double)(ig + ((png_uint_32)j << 8)) /
- 65535.0, g) * 65535.0 + .5);
- }
- }
- }
-#endif /* PNG_READ_BACKGROUND_SUPPORTED || PNG_RGB_TO_GRAY_SUPPORTED */
- }
-}
-#endif
-/* To do: install integer version of png_build_gamma_table here */
-#endif
+#endif /* PNG_READ_QUANTIZE_SUPPORTED */
+#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
#ifdef PNG_MNG_FEATURES_SUPPORTED
/* Undoes intrapixel differencing */
@@ -4188,6 +4969,7 @@
{
int bytes_per_pixel;
png_uint_32 row_width = row_info->width;
+
if (row_info->bit_depth == 8)
{
png_bytep rp;
@@ -4204,8 +4986,8 @@
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
- *(rp) = (png_byte)((256 + *rp + *(rp+1))&0xff);
- *(rp+2) = (png_byte)((256 + *(rp+2) + *(rp+1))&0xff);
+ *(rp) = (png_byte)((256 + *rp + *(rp + 1)) & 0xff);
+ *(rp+2) = (png_byte)((256 + *(rp + 2) + *(rp + 1)) & 0xff);
}
}
else if (row_info->bit_depth == 16)
@@ -4227,12 +5009,12 @@
png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
- png_uint_32 red = (png_uint_32)((s0 + s1 + 65536L) & 0xffffL);
- png_uint_32 blue = (png_uint_32)((s2 + s1 + 65536L) & 0xffffL);
- *(rp ) = (png_byte)((red >> 8) & 0xff);
- *(rp+1) = (png_byte)(red & 0xff);
- *(rp+4) = (png_byte)((blue >> 8) & 0xff);
- *(rp+5) = (png_byte)(blue & 0xff);
+ png_uint_32 red = (s0 + s1 + 65536) & 0xffff;
+ png_uint_32 blue = (s2 + s1 + 65536) & 0xffff;
+ *(rp ) = (png_byte)((red >> 8) & 0xff);
+ *(rp + 1) = (png_byte)(red & 0xff);
+ *(rp + 4) = (png_byte)((blue >> 8) & 0xff);
+ *(rp + 5) = (png_byte)(blue & 0xff);
}
}
}
diff --git a/pngrutil.c b/pngrutil.c
index ac3101b..74822a9 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,8 +1,8 @@
/* pngrutil.c - utilities to read a PNG file
*
- * Last changed in libpng 1.4.8 [July 7, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -14,38 +14,68 @@
* libpng itself during the course of reading an image.
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#ifdef PNG_READ_SUPPORTED
#include "pngpriv.h"
-# define png_strtod(p,a,b) strtod(a,b)
-png_uint_32 PNGAPI
-png_get_uint_31(png_structp png_ptr, png_bytep buf)
-{
- png_uint_32 val = png_get_uint_32(buf);
+#ifdef PNG_READ_SUPPORTED
- if (val > PNG_UINT_31_MAX)
- png_error(png_ptr, "PNG unsigned integer out of range");
- return (val);
+#define png_strtod(p,a,b) strtod(a,b)
+
+png_uint_32 PNGAPI
+png_get_uint_31(png_structp png_ptr, png_const_bytep buf)
+{
+ png_uint_32 uval = png_get_uint_32(buf);
+
+ if (uval > PNG_UINT_31_MAX)
+ png_error(png_ptr, "PNG unsigned integer out of range");
+
+ return (uval);
}
-#ifndef PNG_USE_READ_MACROS
-/* The parentheses around "PNGAPI function_name" in the following three
+#if defined(PNG_READ_gAMA_SUPPORTED) || defined(PNG_READ_cHRM_SUPPORTED)
+/* The following is a variation on the above for use with the fixed
+ * point values used for gAMA and cHRM. Instead of png_error it
+ * issues a warning and returns (-1) - an invalid value because both
+ * gAMA and cHRM use *unsigned* integers for fixed point values.
+ */
+#define PNG_FIXED_ERROR (-1)
+
+static png_fixed_point /* PRIVATE */
+png_get_fixed_point(png_structp png_ptr, png_const_bytep buf)
+{
+ png_uint_32 uval = png_get_uint_32(buf);
+
+ if (uval <= PNG_UINT_31_MAX)
+ return (png_fixed_point)uval; /* known to be in range */
+
+ /* The caller can turn off the warning by passing NULL. */
+ if (png_ptr != NULL)
+ png_warning(png_ptr, "PNG fixed point integer out of range");
+
+ return PNG_FIXED_ERROR;
+}
+#endif
+
+#ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED
+/* NOTE: the read macros will obscure these definitions, so that if
+ * PNG_USE_READ_MACROS is set the library will not use them internally,
+ * but the APIs will still be available externally.
+ *
+ * The parentheses around "PNGAPI function_name" in the following three
* functions are necessary because they allow the macros to co-exist with
* these (unused but exported) functions.
*/
/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */
png_uint_32 (PNGAPI
-png_get_uint_32)(png_bytep buf)
+png_get_uint_32)(png_const_bytep buf)
{
- png_uint_32 uval = png_get_uint_32(buf);
- if ((uval & 0x80000000L) == 0) /* non-negative */
- return uval;
+ png_uint_32 uval =
+ ((png_uint_32)(*(buf )) << 24) +
+ ((png_uint_32)(*(buf + 1)) << 16) +
+ ((png_uint_32)(*(buf + 2)) << 8) +
+ ((png_uint_32)(*(buf + 3)) ) ;
- uval = (uval ^ 0xffffffffL) + 1; /* 2's complement: -x = ~x+1 */
- return -(png_int_32)uval;
+ return uval;
}
/* Grab a signed 32-bit integer from a buffer in big-endian format. The
@@ -54,19 +84,19 @@
* the following code does a two's complement to native conversion.
*/
png_int_32 (PNGAPI
-png_get_int_32)(png_bytep buf)
+png_get_int_32)(png_const_bytep buf)
{
png_uint_32 uval = png_get_uint_32(buf);
- if ((uval & 0x80000000L) == 0) /* non-negative */
+ if ((uval & 0x80000000) == 0) /* non-negative */
return uval;
- uval = (uval ^ 0xffffffffL) + 1; /* 2's complement: -x = ~x+1 */
+ uval = (uval ^ 0xffffffff) + 1; /* 2's complement: -x = ~x+1 */
return -(png_int_32)uval;
}
/* Grab an unsigned 16-bit integer from a buffer in big-endian format. */
png_uint_16 (PNGAPI
-png_get_uint_16)(png_bytep buf)
+png_get_uint_16)(png_const_bytep buf)
{
/* ANSI-C requires an int value to accomodate at least 16 bits so this
* works and allows the compiler not to worry about possible narrowing
@@ -79,7 +109,8 @@
return (png_uint_16)val;
}
-#endif /* PNG_USE_READ_MACROS */
+
+#endif /* PNG_READ_INT_FUNCTIONS_SUPPORTED */
/* Read and check the PNG file signature */
void /* PRIVATE */
@@ -107,7 +138,6 @@
if (num_checked < 4 &&
png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
png_error(png_ptr, "Not a PNG file");
-
else
png_error(png_ptr, "PNG file corrupted by ASCII conversion");
}
@@ -135,22 +165,19 @@
length = png_get_uint_31(png_ptr, buf);
/* Put the chunk name into png_ptr->chunk_name. */
- png_memcpy(png_ptr->chunk_name, buf + 4, 4);
+ png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(buf+4);
- png_debug2(0, "Reading %s chunk, length = %lu",
- png_ptr->chunk_name, (unsigned long)length);
+ png_debug2(0, "Reading %lx chunk, length = %lu",
+ (unsigned long)png_ptr->chunk_name, (unsigned long)length);
/* Reset the crc and run it over the chunk name. */
png_reset_crc(png_ptr);
- png_calculate_crc(png_ptr, png_ptr->chunk_name, 4);
+ png_calculate_crc(png_ptr, buf + 4, 4);
/* Check to see if chunk name is valid. */
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
#ifdef PNG_IO_STATE_SUPPORTED
- /* It is unspecified how many I/O calls will be performed
- * during the serialization of the chunk data.
- */
png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA;
#endif
@@ -191,10 +218,9 @@
if (png_crc_error(png_ptr))
{
- if (((png_ptr->chunk_name[0] & 0x20) && /* Ancillary */
- !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)) ||
- (!(png_ptr->chunk_name[0] & 0x20) && /* Critical */
- (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE)))
+ if (PNG_CHUNK_ANCILLIARY(png_ptr->chunk_name) ?
+ !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) :
+ (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE))
{
png_chunk_warning(png_ptr, "CRC error");
}
@@ -221,14 +247,14 @@
png_uint_32 crc;
int need_crc = 1;
- if (png_ptr->chunk_name[0] & 0x20) /* ancillary */
+ if (PNG_CHUNK_ANCILLIARY(png_ptr->chunk_name))
{
if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
(PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
need_crc = 0;
}
- else /* critical */
+ else /* critical */
{
if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE)
need_crc = 0;
@@ -251,21 +277,53 @@
return (0);
}
-#if defined(PNG_READ_zTXt_SUPPORTED) || defined(PNG_READ_iTXt_SUPPORTED) || \
- defined(PNG_READ_iCCP_SUPPORTED)
+#ifdef PNG_READ_COMPRESSED_TEXT_SUPPORTED
static png_size_t
-png_inflate(png_structp png_ptr, const png_byte *data, png_size_t size,
- png_bytep output, png_size_t output_size)
+png_inflate(png_structp png_ptr, png_bytep data, png_size_t size,
+ png_bytep output, png_size_t output_size)
{
png_size_t count = 0;
- png_ptr->zstream.next_in = (png_bytep)data; /* const_cast: VALID */
- png_ptr->zstream.avail_in = size;
+ /* zlib can't necessarily handle more than 65535 bytes at once (i.e. it can't
+ * even necessarily handle 65536 bytes) because the type uInt is "16 bits or
+ * more". Consequently it is necessary to chunk the input to zlib. This
+ * code uses ZLIB_IO_MAX, from pngpriv.h, as the maximum (the maximum value
+ * that can be stored in a uInt.) It is possible to set ZLIB_IO_MAX to a
+ * lower value in pngpriv.h and this may sometimes have a performance
+ * advantage, because it forces access of the input data to be separated from
+ * at least some of the use by some period of time.
+ */
+ png_ptr->zstream.next_in = data;
+ /* avail_in is set below from 'size' */
+ png_ptr->zstream.avail_in = 0;
while (1)
{
int ret, avail;
+ /* The setting of 'avail_in' used to be outside the loop; by setting it
+ * inside it is possible to chunk the input to zlib and simply rely on
+ * zlib to advance the 'next_in' pointer. This allows arbitrary amounts o
+ * data to be passed through zlib at the unavoidable cost of requiring a
+ * window save (memcpy of up to 32768 output bytes) every ZLIB_IO_MAX
+ * input bytes.
+ */
+ if (png_ptr->zstream.avail_in == 0 && size > 0)
+ {
+ if (size <= ZLIB_IO_MAX)
+ {
+ /* The value is less than ZLIB_IO_MAX so the cast is safe: */
+ png_ptr->zstream.avail_in = (uInt)size;
+ size = 0;
+ }
+
+ else
+ {
+ png_ptr->zstream.avail_in = ZLIB_IO_MAX;
+ size -= ZLIB_IO_MAX;
+ }
+ }
+
/* Reset the output buffer each time round - we empty it
* after every inflate call.
*/
@@ -280,14 +338,18 @@
*/
if ((ret == Z_OK || ret == Z_STREAM_END) && avail > 0)
{
+ png_size_t space = avail; /* > 0, see above */
+
if (output != 0 && output_size > count)
{
- int copy = output_size - count;
- if (avail < copy) copy = avail;
+ png_size_t copy = output_size - count;
+
+ if (space < copy)
+ copy = space;
+
png_memcpy(output + count, png_ptr->zbuf, copy);
}
-
- count += avail;
+ count += space;
}
if (ret == Z_OK)
@@ -306,41 +368,33 @@
* and the error message is dumped into the uncompressed
* buffer if available.
*/
+# ifdef PNG_WARNINGS_SUPPORTED
{
- PNG_CONST char *msg;
+ png_const_charp msg;
+
if (png_ptr->zstream.msg != 0)
msg = png_ptr->zstream.msg;
- else
+
+ else switch (ret)
{
-#ifdef PNG_STDIO_SUPPORTED
- char umsg[52];
+ case Z_BUF_ERROR:
+ msg = "Buffer error in compressed datastream";
+ break;
- switch (ret)
- {
- case Z_BUF_ERROR:
- msg = "Buffer error in compressed datastream in %s chunk";
- break;
+ case Z_DATA_ERROR:
+ msg = "Data error in compressed datastream";
+ break;
- case Z_DATA_ERROR:
- msg = "Data error in compressed datastream in %s chunk";
- break;
-
- default:
- msg = "Incomplete compressed datastream in %s chunk";
- break;
- }
-
- png_snprintf(umsg, sizeof umsg, msg, png_ptr->chunk_name);
- msg = umsg;
-#else
- msg = "Damaged compressed datastream in chunk other than IDAT";
-#endif
+ default:
+ msg = "Incomplete compressed datastream";
+ break;
}
- png_warning(png_ptr, msg);
+ png_chunk_warning(png_ptr, msg);
}
+# endif
- /* 0 means an error - notice that this code simple ignores
+ /* 0 means an error - notice that this code simply ignores
* zero length compressed chunks as a result.
*/
return 0;
@@ -370,22 +424,24 @@
else if (comp_type == PNG_COMPRESSION_TYPE_BASE)
{
png_size_t expanded_size = png_inflate(png_ptr,
- (png_bytep)(png_ptr->chunkdata + prefix_size),
- chunklength - prefix_size,
- 0/*output*/, 0/*output size*/);
+ (png_bytep)(png_ptr->chunkdata + prefix_size),
+ chunklength - prefix_size,
+ 0, /* output */
+ 0); /* output size */
/* Now check the limits on this chunk - if the limit fails the
* compressed data will be removed, the prefix will remain.
*/
-#ifdef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
- if (png_ptr->user_chunk_malloc_max &&
+ if (prefix_size >= (~(png_size_t)0) - 1 ||
+ expanded_size >= (~(png_size_t)0) - 1 - prefix_size
+#ifdef PNG_USER_LIMITS_SUPPORTED
+ || (png_ptr->user_chunk_malloc_max &&
(prefix_size + expanded_size >= png_ptr->user_chunk_malloc_max - 1))
#else
-# ifdef PNG_USER_CHUNK_MALLOC_MAX
- if ((PNG_USER_CHUNK_MALLOC_MAX > 0) &&
+ || ((PNG_USER_CHUNK_MALLOC_MAX > 0) &&
prefix_size + expanded_size >= PNG_USER_CHUNK_MALLOC_MAX - 1)
-# endif
#endif
+ )
png_warning(png_ptr, "Exceeded size limit while expanding chunk");
/* If the size is zero either there was an error and a message
@@ -393,16 +449,12 @@
* and we have nothing to do - the code will exit through the
* error case below.
*/
-#if defined(PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED) || \
- defined(PNG_USER_CHUNK_MALLOC_MAX)
- else
-#endif
- if (expanded_size > 0)
+ else if (expanded_size > 0)
{
/* Success (maybe) - really uncompress the chunk. */
png_size_t new_size = 0;
- png_charp text = png_malloc_warn(png_ptr,
- prefix_size + expanded_size + 1);
+ png_charp text = (png_charp)png_malloc_warn(png_ptr,
+ prefix_size + expanded_size + 1);
if (text != NULL)
{
@@ -426,21 +478,15 @@
}
else
- png_warning(png_ptr, "Not enough memory to decompress chunk");
+ png_warning(png_ptr, "Not enough memory to decompress chunk");
}
}
else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */
{
-#ifdef PNG_STDIO_SUPPORTED
- char umsg[50];
-
- png_snprintf(umsg, sizeof umsg, "Unknown zTXt compression type %d",
- comp_type);
- png_warning(png_ptr, umsg);
-#else
- png_warning(png_ptr, "Unknown zTXt compression type");
-#endif
+ PNG_WARNING_PARAMETERS(p)
+ png_warning_parameter_signed(p, 1, PNG_NUMBER_FORMAT_d, comp_type);
+ png_formatted_warning(png_ptr, p, "Unknown compression type @1");
/* The recovery is to simply drop the data. */
}
@@ -450,11 +496,13 @@
* amount of compressed data.
*/
{
- png_charp text = png_malloc_warn(png_ptr, prefix_size + 1);
+ png_charp text = (png_charp)png_malloc_warn(png_ptr, prefix_size + 1);
+
if (text != NULL)
{
if (prefix_size > 0)
png_memcpy(text, png_ptr->chunkdata, prefix_size);
+
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = text;
@@ -466,7 +514,7 @@
*newlength = prefix_size;
}
-#endif
+#endif /* PNG_READ_COMPRESSED_TEXT_SUPPORTED */
/* Read and check the IDHR chunk */
void /* PRIVATE */
@@ -513,6 +561,7 @@
/* Find number of channels */
switch (png_ptr->color_type)
{
+ default: /* invalid, png_set_IHDR calls png_error */
case PNG_COLOR_TYPE_GRAY:
case PNG_COLOR_TYPE_PALETTE:
png_ptr->channels = 1;
@@ -537,9 +586,9 @@
png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width);
png_debug1(3, "bit_depth = %d", png_ptr->bit_depth);
png_debug1(3, "channels = %d", png_ptr->channels);
- png_debug1(3, "rowbytes = %lu", png_ptr->rowbytes);
+ png_debug1(3, "rowbytes = %lu", (unsigned long)png_ptr->rowbytes);
png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
- color_type, interlace_type, compression_type, filter_type);
+ color_type, interlace_type, compression_type, filter_type);
}
/* Read and check the palette */
@@ -572,10 +621,11 @@
if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR))
{
png_warning(png_ptr,
- "Ignoring PLTE chunk in grayscale PNG");
+ "Ignoring PLTE chunk in grayscale PNG");
png_crc_finish(png_ptr, length);
return;
}
+
#ifndef PNG_READ_OPT_PLTE_SUPPORTED
if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
{
@@ -624,7 +674,7 @@
}
#endif
- /* If we actually NEED the PLTE chunk (ie for a paletted image), we do
+ /* If we actually need the PLTE chunk (ie for a paletted image), we do
* whatever the normal CRC configuration tells us. However, if we
* have an RGB image, the PLTE can be considered ancillary, so
* we will act as though it is.
@@ -635,25 +685,29 @@
{
png_crc_finish(png_ptr, 0);
}
+
#ifndef PNG_READ_OPT_PLTE_SUPPORTED
else if (png_crc_error(png_ptr)) /* Only if we have a CRC error */
{
/* If we don't want to use the data from an ancillary chunk,
- we have two options: an error abort, or a warning and we
- ignore the data in this chunk (which should be OK, since
- it's considered ancillary for a RGB or RGBA image). */
+ * we have two options: an error abort, or a warning and we
+ * ignore the data in this chunk (which should be OK, since
+ * it's considered ancillary for a RGB or RGBA image).
+ */
if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_USE))
{
if (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)
{
png_chunk_benign_error(png_ptr, "CRC error");
}
+
else
{
png_chunk_warning(png_ptr, "CRC error");
return;
}
}
+
/* Otherwise, we (optionally) emit a warning and use the chunk. */
else if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN))
{
@@ -674,6 +728,7 @@
png_warning(png_ptr, "Truncating incorrect tRNS chunk length");
png_ptr->num_trans = (png_uint_16)num;
}
+
if (info_ptr->num_trans > (png_uint_16)num)
{
png_warning(png_ptr, "Truncating incorrect info tRNS chunk length");
@@ -701,6 +756,7 @@
{
png_warning(png_ptr, "Incorrect IEND chunk length");
}
+
png_crc_finish(png_ptr, length);
PNG_UNUSED(info_ptr) /* Quiet compiler warnings about unused info_ptr */
@@ -711,30 +767,29 @@
png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_fixed_point igamma;
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- float file_gamma;
-#endif
png_byte buf[4];
png_debug(1, "in png_handle_gAMA");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before gAMA");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid gAMA after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (png_ptr->mode & PNG_HAVE_PLTE)
/* Should be an error, but we can cope with it */
png_warning(png_ptr, "Out of place gAMA chunk");
if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
#ifdef PNG_READ_sRGB_SUPPORTED
- && !(info_ptr->valid & PNG_INFO_sRGB)
+ && !(info_ptr->valid & PNG_INFO_sRGB)
#endif
- )
+ )
{
png_warning(png_ptr, "Duplicate gAMA chunk");
png_crc_finish(png_ptr, length);
@@ -749,41 +804,41 @@
}
png_crc_read(png_ptr, buf, 4);
+
if (png_crc_finish(png_ptr, 0))
return;
- igamma = (png_fixed_point)png_get_uint_32(buf);
- /* Check for zero gamma */
- if (igamma == 0)
- {
- png_warning(png_ptr,
- "Ignoring gAMA chunk with gamma=0");
- return;
- }
+ igamma = png_get_fixed_point(NULL, buf);
-#ifdef PNG_READ_sRGB_SUPPORTED
+ /* Check for zero gamma or an error. */
+ if (igamma <= 0)
+ {
+ png_warning(png_ptr,
+ "Ignoring gAMA chunk with out of range gamma");
+
+ return;
+ }
+
+# ifdef PNG_READ_sRGB_SUPPORTED
if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB))
- if (PNG_OUT_OF_RANGE(igamma, 45500L, 500))
+ {
+ if (PNG_OUT_OF_RANGE(igamma, 45500, 500))
{
- png_warning(png_ptr,
- "Ignoring incorrect gAMA value when sRGB is also present");
-#ifdef PNG_CONSOLE_IO_SUPPORTED
- fprintf(stderr, "gamma = (%d/100000)", (int)igamma);
-#endif
+ PNG_WARNING_PARAMETERS(p)
+ png_warning_parameter_signed(p, 1, PNG_NUMBER_FORMAT_fixed, igamma);
+ png_formatted_warning(png_ptr, p,
+ "Ignoring incorrect gAMA value @1 when sRGB is also present");
return;
}
-#endif /* PNG_READ_sRGB_SUPPORTED */
+ }
+# endif /* PNG_READ_sRGB_SUPPORTED */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- file_gamma = (float)igamma / (float)100000.0;
# ifdef PNG_READ_GAMMA_SUPPORTED
- png_ptr->gamma = file_gamma;
+ /* Gamma correction on read is supported. */
+ png_ptr->gamma = igamma;
# endif
- png_set_gAMA(png_ptr, info_ptr, file_gamma);
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
+ /* And set the 'info' structure members. */
png_set_gAMA_fixed(png_ptr, info_ptr, igamma);
-#endif
}
#endif
@@ -800,17 +855,20 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before sBIT");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid sBIT after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (png_ptr->mode & PNG_HAVE_PLTE)
{
/* Should be an error, but we can cope with it */
png_warning(png_ptr, "Out of place sBIT chunk");
}
+
if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT))
{
png_warning(png_ptr, "Duplicate sBIT chunk");
@@ -820,6 +878,7 @@
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
truelen = 3;
+
else
truelen = (png_size_t)png_ptr->channels;
@@ -831,6 +890,7 @@
}
png_crc_read(png_ptr, buf, truelen);
+
if (png_crc_finish(png_ptr, 0))
return;
@@ -841,6 +901,7 @@
png_ptr->sig_bit.blue = buf[2];
png_ptr->sig_bit.alpha = buf[3];
}
+
else
{
png_ptr->sig_bit.gray = buf[0];
@@ -849,6 +910,7 @@
png_ptr->sig_bit.blue = buf[0];
png_ptr->sig_bit.alpha = buf[1];
}
+
png_set_sBIT(png_ptr, info_ptr, &(png_ptr->sig_bit));
}
#endif
@@ -858,32 +920,29 @@
png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_byte buf[32];
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
-#endif
- png_fixed_point int_x_white, int_y_white, int_x_red, int_y_red, int_x_green,
- int_y_green, int_x_blue, int_y_blue;
-
- png_uint_32 uint_x, uint_y;
+ png_fixed_point x_white, y_white, x_red, y_red, x_green, y_green, x_blue,
+ y_blue;
png_debug(1, "in png_handle_cHRM");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before cHRM");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid cHRM after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (png_ptr->mode & PNG_HAVE_PLTE)
/* Should be an error, but we can cope with it */
- png_warning(png_ptr, "Missing PLTE before cHRM");
+ png_warning(png_ptr, "Out of place cHRM chunk");
if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)
-#ifdef PNG_READ_sRGB_SUPPORTED
- && !(info_ptr->valid & PNG_INFO_sRGB)
-#endif
+# ifdef PNG_READ_sRGB_SUPPORTED
+ && !(info_ptr->valid & PNG_INFO_sRGB)
+# endif
)
{
png_warning(png_ptr, "Duplicate cHRM chunk");
@@ -899,83 +958,145 @@
}
png_crc_read(png_ptr, buf, 32);
+
if (png_crc_finish(png_ptr, 0))
return;
- uint_x = png_get_uint_32(buf);
- uint_y = png_get_uint_32(buf + 4);
- int_x_white = (png_fixed_point)uint_x;
- int_y_white = (png_fixed_point)uint_y;
+ x_white = png_get_fixed_point(NULL, buf);
+ y_white = png_get_fixed_point(NULL, buf + 4);
+ x_red = png_get_fixed_point(NULL, buf + 8);
+ y_red = png_get_fixed_point(NULL, buf + 12);
+ x_green = png_get_fixed_point(NULL, buf + 16);
+ y_green = png_get_fixed_point(NULL, buf + 20);
+ x_blue = png_get_fixed_point(NULL, buf + 24);
+ y_blue = png_get_fixed_point(NULL, buf + 28);
- uint_x = png_get_uint_32(buf + 8);
- uint_y = png_get_uint_32(buf + 12);
- int_x_red = (png_fixed_point)uint_x;
- int_y_red = (png_fixed_point)uint_y;
-
- uint_x = png_get_uint_32(buf + 16);
- uint_y = png_get_uint_32(buf + 20);
- int_x_green = (png_fixed_point)uint_x;
- int_y_green = (png_fixed_point)uint_y;
-
- uint_x = png_get_uint_32(buf + 24);
- uint_y = png_get_uint_32(buf + 28);
- int_x_blue = (png_fixed_point)uint_x;
- int_y_blue = (png_fixed_point)uint_y;
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- white_x = (float)int_x_white / (float)100000.0;
- white_y = (float)int_y_white / (float)100000.0;
- red_x = (float)int_x_red / (float)100000.0;
- red_y = (float)int_y_red / (float)100000.0;
- green_x = (float)int_x_green / (float)100000.0;
- green_y = (float)int_y_green / (float)100000.0;
- blue_x = (float)int_x_blue / (float)100000.0;
- blue_y = (float)int_y_blue / (float)100000.0;
-#endif
+ if (x_white == PNG_FIXED_ERROR ||
+ y_white == PNG_FIXED_ERROR ||
+ x_red == PNG_FIXED_ERROR ||
+ y_red == PNG_FIXED_ERROR ||
+ x_green == PNG_FIXED_ERROR ||
+ y_green == PNG_FIXED_ERROR ||
+ x_blue == PNG_FIXED_ERROR ||
+ y_blue == PNG_FIXED_ERROR)
+ {
+ png_warning(png_ptr, "Ignoring cHRM chunk with negative chromaticities");
+ return;
+ }
#ifdef PNG_READ_sRGB_SUPPORTED
if ((info_ptr != NULL) && (info_ptr->valid & PNG_INFO_sRGB))
+ {
+ if (PNG_OUT_OF_RANGE(x_white, 31270, 1000) ||
+ PNG_OUT_OF_RANGE(y_white, 32900, 1000) ||
+ PNG_OUT_OF_RANGE(x_red, 64000, 1000) ||
+ PNG_OUT_OF_RANGE(y_red, 33000, 1000) ||
+ PNG_OUT_OF_RANGE(x_green, 30000, 1000) ||
+ PNG_OUT_OF_RANGE(y_green, 60000, 1000) ||
+ PNG_OUT_OF_RANGE(x_blue, 15000, 1000) ||
+ PNG_OUT_OF_RANGE(y_blue, 6000, 1000))
{
- if (PNG_OUT_OF_RANGE(int_x_white, 31270, 1000) ||
- PNG_OUT_OF_RANGE(int_y_white, 32900, 1000) ||
- PNG_OUT_OF_RANGE(int_x_red, 64000L, 1000) ||
- PNG_OUT_OF_RANGE(int_y_red, 33000, 1000) ||
- PNG_OUT_OF_RANGE(int_x_green, 30000, 1000) ||
- PNG_OUT_OF_RANGE(int_y_green, 60000L, 1000) ||
- PNG_OUT_OF_RANGE(int_x_blue, 15000, 1000) ||
- PNG_OUT_OF_RANGE(int_y_blue, 6000, 1000))
- {
- png_warning(png_ptr,
- "Ignoring incorrect cHRM value when sRGB is also present");
-#ifdef PNG_CONSOLE_IO_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- fprintf(stderr, "wx=%f, wy=%f, rx=%f, ry=%f\n",
- white_x, white_y, red_x, red_y);
- fprintf(stderr, "gx=%f, gy=%f, bx=%f, by=%f\n",
- green_x, green_y, blue_x, blue_y);
-#else
- fprintf(stderr, "wx=%ld, wy=%ld, rx=%ld, ry=%ld\n",
- (long)int_x_white, (long)int_y_white,
- (long)int_x_red, (long)int_y_red);
- fprintf(stderr, "gx=%ld, gy=%ld, bx=%ld, by=%ld\n",
- (long)int_x_green, (long)int_y_green,
- (long)int_x_blue, (long)int_y_blue);
-#endif
-#endif /* PNG_CONSOLE_IO_SUPPORTED */
- }
- return;
+ PNG_WARNING_PARAMETERS(p)
+
+ png_warning_parameter_signed(p, 1, PNG_NUMBER_FORMAT_fixed, x_white);
+ png_warning_parameter_signed(p, 2, PNG_NUMBER_FORMAT_fixed, y_white);
+ png_warning_parameter_signed(p, 3, PNG_NUMBER_FORMAT_fixed, x_red);
+ png_warning_parameter_signed(p, 4, PNG_NUMBER_FORMAT_fixed, y_red);
+ png_warning_parameter_signed(p, 5, PNG_NUMBER_FORMAT_fixed, x_green);
+ png_warning_parameter_signed(p, 6, PNG_NUMBER_FORMAT_fixed, y_green);
+ png_warning_parameter_signed(p, 7, PNG_NUMBER_FORMAT_fixed, x_blue);
+ png_warning_parameter_signed(p, 8, PNG_NUMBER_FORMAT_fixed, y_blue);
+
+ png_formatted_warning(png_ptr, p,
+ "Ignoring incorrect cHRM white(@1,@2) r(@3,@4)g(@5,@6)b(@7,@8) "
+ "when sRGB is also present");
}
+ return;
+ }
#endif /* PNG_READ_sRGB_SUPPORTED */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- png_set_cHRM(png_ptr, info_ptr,
- white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ /* Store the _white values as default coefficients for the rgb to gray
+ * operation if it is supported. Check if the transform is already set to
+ * avoid destroying the transform values.
+ */
+ if (!png_ptr->rgb_to_gray_coefficients_set)
+ {
+ /* png_set_background has not been called and we haven't seen an sRGB
+ * chunk yet. Find the XYZ of the three end points.
+ */
+ png_XYZ XYZ;
+ png_xy xy;
+
+ xy.redx = x_red;
+ xy.redy = y_red;
+ xy.greenx = x_green;
+ xy.greeny = y_green;
+ xy.bluex = x_blue;
+ xy.bluey = y_blue;
+ xy.whitex = x_white;
+ xy.whitey = y_white;
+
+ if (png_XYZ_from_xy_checked(png_ptr, &XYZ, xy))
+ {
+ /* The success case, because XYZ_from_xy normalises to a reference
+ * white Y of 1.0 we just need to scale the numbers. This should
+ * always work just fine. It is an internal error if this overflows.
+ */
+ {
+ png_fixed_point r, g, b;
+ if (png_muldiv(&r, XYZ.redY, 32768, PNG_FP_1) &&
+ r >= 0 && r <= 32768 &&
+ png_muldiv(&g, XYZ.greenY, 32768, PNG_FP_1) &&
+ g >= 0 && g <= 32768 &&
+ png_muldiv(&b, XYZ.blueY, 32768, PNG_FP_1) &&
+ b >= 0 && b <= 32768 &&
+ r+g+b <= 32769)
+ {
+ /* We allow 0 coefficients here. r+g+b may be 32769 if two or
+ * all of the coefficients were rounded up. Handle this by
+ * reducing the *largest* coefficient by 1; this matches the
+ * approach used for the default coefficients in pngrtran.c
+ */
+ int add = 0;
+
+ if (r+g+b > 32768)
+ add = -1;
+ else if (r+g+b < 32768)
+ add = 1;
+
+ if (add != 0)
+ {
+ if (g >= r && g >= b)
+ g += add;
+ else if (r >= g && r >= b)
+ r += add;
+ else
+ b += add;
+ }
+
+ /* Check for an internal error. */
+ if (r+g+b != 32768)
+ png_error(png_ptr,
+ "internal error handling cHRM coefficients");
+
+ png_ptr->rgb_to_gray_red_coeff = (png_uint_16)r;
+ png_ptr->rgb_to_gray_green_coeff = (png_uint_16)g;
+ }
+
+ /* This is a png_error at present even though it could be ignored -
+ * it should never happen, but it is important that if it does, the
+ * bug is fixed.
+ */
+ else
+ png_error(png_ptr, "internal error handling cHRM->XYZ");
+ }
+ }
+ }
#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
- png_set_cHRM_fixed(png_ptr, info_ptr,
- int_x_white, int_y_white, int_x_red, int_y_red, int_x_green,
- int_y_green, int_x_blue, int_y_blue);
-#endif
+
+ png_set_cHRM_fixed(png_ptr, info_ptr, x_white, y_white, x_red, y_red,
+ x_green, y_green, x_blue, y_blue);
}
#endif
@@ -990,12 +1111,14 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before sRGB");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid sRGB after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (png_ptr->mode & PNG_HAVE_PLTE)
/* Should be an error, but we can cope with it */
png_warning(png_ptr, "Out of place sRGB chunk");
@@ -1015,10 +1138,12 @@
}
png_crc_read(png_ptr, buf, 1);
+
if (png_crc_finish(png_ptr, 0))
return;
intent = buf[0];
+
/* Check for bad intent */
if (intent >= PNG_sRGB_INTENT_LAST)
{
@@ -1029,50 +1154,76 @@
#if defined(PNG_READ_gAMA_SUPPORTED) && defined(PNG_READ_GAMMA_SUPPORTED)
if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA))
{
- png_fixed_point igamma;
-#ifdef PNG_FIXED_POINT_SUPPORTED
- igamma=info_ptr->int_gamma;
-#else
-# ifdef PNG_FLOATING_POINT_SUPPORTED
- igamma=(png_fixed_point)(info_ptr->gamma * 100000.);
-# endif
-#endif
- if (PNG_OUT_OF_RANGE(igamma, 45500L, 500))
+ if (PNG_OUT_OF_RANGE(info_ptr->gamma, 45500, 500))
{
- png_warning(png_ptr,
- "Ignoring incorrect gAMA value when sRGB is also present");
-#ifdef PNG_CONSOLE_IO_SUPPORTED
-# ifdef PNG_FIXED_POINT_SUPPORTED
- fprintf(stderr, "incorrect gamma=(%d/100000)\n",
- (int)png_ptr->int_gamma);
-# else
-# ifdef PNG_FLOATING_POINT_SUPPORTED
- fprintf(stderr, "incorrect gamma=%f\n", png_ptr->gamma);
-# endif
-# endif
-#endif
+ PNG_WARNING_PARAMETERS(p)
+
+ png_warning_parameter_signed(p, 1, PNG_NUMBER_FORMAT_fixed,
+ info_ptr->gamma);
+
+ png_formatted_warning(png_ptr, p,
+ "Ignoring incorrect gAMA value @1 when sRGB is also present");
}
}
#endif /* PNG_READ_gAMA_SUPPORTED */
#ifdef PNG_READ_cHRM_SUPPORTED
-#ifdef PNG_FIXED_POINT_SUPPORTED
if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
- if (PNG_OUT_OF_RANGE(info_ptr->int_x_white, 31270, 1000) ||
- PNG_OUT_OF_RANGE(info_ptr->int_y_white, 32900, 1000) ||
- PNG_OUT_OF_RANGE(info_ptr->int_x_red, 64000L, 1000) ||
- PNG_OUT_OF_RANGE(info_ptr->int_y_red, 33000, 1000) ||
- PNG_OUT_OF_RANGE(info_ptr->int_x_green, 30000, 1000) ||
- PNG_OUT_OF_RANGE(info_ptr->int_y_green, 60000L, 1000) ||
- PNG_OUT_OF_RANGE(info_ptr->int_x_blue, 15000, 1000) ||
- PNG_OUT_OF_RANGE(info_ptr->int_y_blue, 6000, 1000))
- {
- png_warning(png_ptr,
- "Ignoring incorrect cHRM value when sRGB is also present");
- }
-#endif /* PNG_FIXED_POINT_SUPPORTED */
+ if (PNG_OUT_OF_RANGE(info_ptr->x_white, 31270, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->y_white, 32900, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->x_red, 64000, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->y_red, 33000, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->x_green, 30000, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->y_green, 60000, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->x_blue, 15000, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->y_blue, 6000, 1000))
+ {
+ png_warning(png_ptr,
+ "Ignoring incorrect cHRM value when sRGB is also present");
+ }
#endif /* PNG_READ_cHRM_SUPPORTED */
+ /* This is recorded for use when handling the cHRM chunk above. An sRGB
+ * chunk unconditionally overwrites the coefficients for grayscale conversion
+ * too.
+ */
+ png_ptr->is_sRGB = 1;
+
+# ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ /* Don't overwrite user supplied values: */
+ if (!png_ptr->rgb_to_gray_coefficients_set)
+ {
+ /* These numbers come from the sRGB specification (or, since one has to
+ * pay much money to get a copy, the wikipedia sRGB page) the
+ * chromaticity values quoted have been inverted to get the reverse
+ * transformation from RGB to XYZ and the 'Y' coefficients scaled by
+ * 32768 (then rounded).
+ *
+ * sRGB and ITU Rec-709 both truncate the values for the D65 white
+ * point to four digits and, even though it actually stores five
+ * digits, the PNG spec gives the truncated value.
+ *
+ * This means that when the chromaticities are converted back to XYZ
+ * end points we end up with (6968,23435,2366), which, as described in
+ * pngrtran.c, would overflow. If the five digit precision and up is
+ * used we get, instead:
+ *
+ * 6968*R + 23435*G + 2365*B
+ *
+ * (Notice that this rounds the blue coefficient down, rather than the
+ * choice used in pngrtran.c which is to round the green one down.)
+ */
+ png_ptr->rgb_to_gray_red_coeff = 6968; /* 0.212639005871510 */
+ png_ptr->rgb_to_gray_green_coeff = 23434; /* 0.715168678767756 */
+ /* png_ptr->rgb_to_gray_blue_coeff = 2366; 0.072192315360734 */
+
+ /* The following keeps the cHRM chunk from destroying the
+ * coefficients again in the event that it follows the sRGB chunk.
+ */
+ png_ptr->rgb_to_gray_coefficients_set = 1;
+ }
+# endif
+
png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr, intent);
}
#endif /* PNG_READ_sRGB_SUPPORTED */
@@ -1086,19 +1237,22 @@
png_bytep pC;
png_charp profile;
png_uint_32 skip = 0;
- png_uint_32 profile_size, profile_length;
+ png_uint_32 profile_size;
+ png_alloc_size_t profile_length;
png_size_t slength, prefix_length, data_length;
png_debug(1, "in png_handle_iCCP");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before iCCP");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid iCCP after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (png_ptr->mode & PNG_HAVE_PLTE)
/* Should be an error, but we can cope with it */
png_warning(png_ptr, "Out of place iCCP chunk");
@@ -1121,7 +1275,7 @@
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = (png_charp)png_malloc(png_ptr, length + 1);
- slength = (png_size_t)length;
+ slength = length;
png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
if (png_crc_finish(png_ptr, skip))
@@ -1141,7 +1295,7 @@
/* There should be at least one zero (the compression type byte)
* following the separator, and we should be on it
*/
- if ( profile >= png_ptr->chunkdata + slength - 1)
+ if (profile >= png_ptr->chunkdata + slength - 1)
{
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
@@ -1151,6 +1305,7 @@
/* Compression_type should always be zero */
compression_type = *profile++;
+
if (compression_type)
{
png_warning(png_ptr, "Ignoring nonzero compression type in iCCP chunk");
@@ -1160,11 +1315,11 @@
prefix_length = profile - png_ptr->chunkdata;
png_decompress_chunk(png_ptr, compression_type,
- slength, prefix_length, &data_length);
+ slength, prefix_length, &data_length);
profile_length = data_length - prefix_length;
- if ( prefix_length > data_length || profile_length < 4)
+ if (prefix_length > data_length || profile_length < 4)
{
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
@@ -1174,36 +1329,35 @@
/* Check the profile_size recorded in the first 32 bits of the ICC profile */
pC = (png_bytep)(png_ptr->chunkdata + prefix_length);
- profile_size = ((*(pC ))<<24) |
- ((*(pC + 1))<<16) |
- ((*(pC + 2))<< 8) |
- ((*(pC + 3)) );
+ profile_size = ((*(pC )) << 24) |
+ ((*(pC + 1)) << 16) |
+ ((*(pC + 2)) << 8) |
+ ((*(pC + 3)) );
+ /* NOTE: the following guarantees that 'profile_length' fits into 32 bits,
+ * because profile_size is a 32 bit value.
+ */
if (profile_size < profile_length)
profile_length = profile_size;
+ /* And the following guarantees that profile_size == profile_length. */
if (profile_size > profile_length)
{
-#ifdef PNG_STDIO_SUPPORTED
- char umsg[50];
-#endif
+ PNG_WARNING_PARAMETERS(p)
+
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
- png_warning(png_ptr, "Ignoring truncated iCCP profile");
-#ifdef PNG_STDIO_SUPPORTED
- png_snprintf(umsg, 50, "declared profile size = %lu",
- (unsigned long)profile_size);
- png_warning(png_ptr, umsg);
- png_snprintf(umsg, 50, "actual profile length = %lu",
- (unsigned long)profile_length);
- png_warning(png_ptr, umsg);
-#endif
+ png_warning_parameter_unsigned(p, 1, PNG_NUMBER_FORMAT_u, profile_size);
+ png_warning_parameter_unsigned(p, 2, PNG_NUMBER_FORMAT_u, profile_length);
+ png_formatted_warning(png_ptr, p,
+ "Ignoring iCCP chunk with declared size = @1 and actual length = @2");
return;
}
png_set_iCCP(png_ptr, info_ptr, png_ptr->chunkdata,
- compression_type, png_ptr->chunkdata + prefix_length, profile_length);
+ compression_type, (png_bytep)png_ptr->chunkdata + prefix_length,
+ profile_size);
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
}
@@ -1217,9 +1371,12 @@
png_bytep entry_start;
png_sPLT_t new_palette;
png_sPLT_entryp pp;
- int data_length, entry_size, i;
+ png_uint_32 data_length;
+ int entry_size, i;
png_uint_32 skip = 0;
png_size_t slength;
+ png_uint_32 dl;
+ png_size_t max_dl;
png_debug(1, "in png_handle_sPLT");
@@ -1232,6 +1389,7 @@
png_crc_finish(png_ptr, length);
return;
}
+
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for sPLT");
@@ -1243,6 +1401,7 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before sPLT");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid sPLT after IDAT");
@@ -1261,7 +1420,12 @@
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = (png_charp)png_malloc(png_ptr, length + 1);
- slength = (png_size_t)length;
+
+ /* WARNING: this may break if size_t is less than 32 bits; it is assumed
+ * that the PNG_MAX_MALLOC_64K test is enabled in this case, but this is a
+ * potential breakage point if the types in pngconf.h aren't exactly right.
+ */
+ slength = length;
png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
if (png_crc_finish(png_ptr, skip))
@@ -1276,6 +1440,7 @@
for (entry_start = (png_bytep)png_ptr->chunkdata; *entry_start;
entry_start++)
/* Empty loop to find end of name */ ;
+
++entry_start;
/* A sample depth should follow the separator, and we should be on it */
@@ -1289,7 +1454,12 @@
new_palette.depth = *entry_start++;
entry_size = (new_palette.depth == 8 ? 6 : 10);
- data_length = (slength - (entry_start - (png_bytep)png_ptr->chunkdata));
+ /* This must fit in a png_uint_32 because it is derived from the original
+ * chunk data length (and use 'length', not 'slength' here for clarity -
+ * they are guaranteed to be the same, see the tests above.)
+ */
+ data_length = length - (png_uint_32)(entry_start -
+ (png_bytep)png_ptr->chunkdata);
/* Integrity-check the data length */
if (data_length % entry_size)
@@ -1300,15 +1470,20 @@
return;
}
- new_palette.nentries = (png_int_32) ( data_length / entry_size);
- if ((png_uint_32) new_palette.nentries >
- (png_uint_32) (PNG_SIZE_MAX / png_sizeof(png_sPLT_entry)))
+ dl = (png_int_32)(data_length / entry_size);
+ max_dl = PNG_SIZE_MAX / png_sizeof(png_sPLT_entry);
+
+ if (dl > max_dl)
{
png_warning(png_ptr, "sPLT chunk too long");
return;
}
+
+ new_palette.nentries = (png_int_32)(data_length / entry_size);
+
new_palette.entries = (png_sPLT_entryp)png_malloc_warn(
png_ptr, new_palette.nentries * png_sizeof(png_sPLT_entry));
+
if (new_palette.entries == NULL)
{
png_warning(png_ptr, "sPLT chunk requires too much memory");
@@ -1322,39 +1497,44 @@
if (new_palette.depth == 8)
{
- pp->red = *entry_start++;
- pp->green = *entry_start++;
- pp->blue = *entry_start++;
- pp->alpha = *entry_start++;
+ pp->red = *entry_start++;
+ pp->green = *entry_start++;
+ pp->blue = *entry_start++;
+ pp->alpha = *entry_start++;
}
+
else
{
- pp->red = png_get_uint_16(entry_start); entry_start += 2;
- pp->green = png_get_uint_16(entry_start); entry_start += 2;
- pp->blue = png_get_uint_16(entry_start); entry_start += 2;
- pp->alpha = png_get_uint_16(entry_start); entry_start += 2;
+ pp->red = png_get_uint_16(entry_start); entry_start += 2;
+ pp->green = png_get_uint_16(entry_start); entry_start += 2;
+ pp->blue = png_get_uint_16(entry_start); entry_start += 2;
+ pp->alpha = png_get_uint_16(entry_start); entry_start += 2;
}
+
pp->frequency = png_get_uint_16(entry_start); entry_start += 2;
}
#else
pp = new_palette.entries;
+
for (i = 0; i < new_palette.nentries; i++)
{
if (new_palette.depth == 8)
{
- pp[i].red = *entry_start++;
- pp[i].green = *entry_start++;
- pp[i].blue = *entry_start++;
- pp[i].alpha = *entry_start++;
+ pp[i].red = *entry_start++;
+ pp[i].green = *entry_start++;
+ pp[i].blue = *entry_start++;
+ pp[i].alpha = *entry_start++;
}
+
else
{
- pp[i].red = png_get_uint_16(entry_start); entry_start += 2;
- pp[i].green = png_get_uint_16(entry_start); entry_start += 2;
- pp[i].blue = png_get_uint_16(entry_start); entry_start += 2;
- pp[i].alpha = png_get_uint_16(entry_start); entry_start += 2;
+ pp[i].red = png_get_uint_16(entry_start); entry_start += 2;
+ pp[i].green = png_get_uint_16(entry_start); entry_start += 2;
+ pp[i].blue = png_get_uint_16(entry_start); entry_start += 2;
+ pp[i].alpha = png_get_uint_16(entry_start); entry_start += 2;
}
+
pp[i].frequency = png_get_uint_16(entry_start); entry_start += 2;
}
#endif
@@ -1380,12 +1560,14 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before tRNS");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid tRNS after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
{
png_warning(png_ptr, "Duplicate tRNS chunk");
@@ -1408,6 +1590,7 @@
png_ptr->num_trans = 1;
png_ptr->trans_color.gray = png_get_uint_16(buf);
}
+
else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
{
png_byte buf[6];
@@ -1418,12 +1601,14 @@
png_crc_finish(png_ptr, length);
return;
}
+
png_crc_read(png_ptr, buf, (png_size_t)length);
png_ptr->num_trans = 1;
png_ptr->trans_color.red = png_get_uint_16(buf);
png_ptr->trans_color.green = png_get_uint_16(buf + 2);
png_ptr->trans_color.blue = png_get_uint_16(buf + 4);
}
+
else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (!(png_ptr->mode & PNG_HAVE_PLTE))
@@ -1431,6 +1616,7 @@
/* Should be an error, but we can cope with it. */
png_warning(png_ptr, "Missing PLTE before tRNS");
}
+
if (length > (png_uint_32)png_ptr->num_palette ||
length > PNG_MAX_PALETTE_LENGTH)
{
@@ -1438,15 +1624,18 @@
png_crc_finish(png_ptr, length);
return;
}
+
if (length == 0)
{
png_warning(png_ptr, "Zero length tRNS chunk");
png_crc_finish(png_ptr, length);
return;
}
+
png_crc_read(png_ptr, readbuf, (png_size_t)length);
png_ptr->num_trans = (png_uint_16)length;
}
+
else
{
png_warning(png_ptr, "tRNS chunk not allowed with alpha channel");
@@ -1461,7 +1650,7 @@
}
png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans,
- &(png_ptr->trans_color));
+ &(png_ptr->trans_color));
}
#endif
@@ -1471,24 +1660,28 @@
{
png_size_t truelen;
png_byte buf[6];
+ png_color_16 background;
png_debug(1, "in png_handle_bKGD");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before bKGD");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid bKGD after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
- !(png_ptr->mode & PNG_HAVE_PLTE))
+ !(png_ptr->mode & PNG_HAVE_PLTE))
{
png_warning(png_ptr, "Missing PLTE before bKGD");
png_crc_finish(png_ptr, length);
return;
}
+
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD))
{
png_warning(png_ptr, "Duplicate bKGD chunk");
@@ -1498,8 +1691,10 @@
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
truelen = 1;
+
else if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
truelen = 6;
+
else
truelen = 2;
@@ -1511,46 +1706,57 @@
}
png_crc_read(png_ptr, buf, truelen);
+
if (png_crc_finish(png_ptr, 0))
return;
/* We convert the index value into RGB components so that we can allow
* arbitrary RGB values for background when we have transparency, and
* so it is easy to determine the RGB values of the background color
- * from the info_ptr struct. */
+ * from the info_ptr struct.
+ */
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
- png_ptr->background.index = buf[0];
+ background.index = buf[0];
+
if (info_ptr && info_ptr->num_palette)
{
- if (buf[0] >= info_ptr->num_palette)
- {
- png_warning(png_ptr, "Incorrect bKGD chunk index value");
- return;
- }
- png_ptr->background.red =
- (png_uint_16)png_ptr->palette[buf[0]].red;
- png_ptr->background.green =
- (png_uint_16)png_ptr->palette[buf[0]].green;
- png_ptr->background.blue =
- (png_uint_16)png_ptr->palette[buf[0]].blue;
+ if (buf[0] >= info_ptr->num_palette)
+ {
+ png_warning(png_ptr, "Incorrect bKGD chunk index value");
+ return;
+ }
+
+ background.red = (png_uint_16)png_ptr->palette[buf[0]].red;
+ background.green = (png_uint_16)png_ptr->palette[buf[0]].green;
+ background.blue = (png_uint_16)png_ptr->palette[buf[0]].blue;
}
- }
- else if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR)) /* GRAY */
- {
- png_ptr->background.red =
- png_ptr->background.green =
- png_ptr->background.blue =
- png_ptr->background.gray = png_get_uint_16(buf);
- }
- else
- {
- png_ptr->background.red = png_get_uint_16(buf);
- png_ptr->background.green = png_get_uint_16(buf + 2);
- png_ptr->background.blue = png_get_uint_16(buf + 4);
+
+ else
+ background.red = background.green = background.blue = 0;
+
+ background.gray = 0;
}
- png_set_bKGD(png_ptr, info_ptr, &(png_ptr->background));
+ else if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR)) /* GRAY */
+ {
+ background.index = 0;
+ background.red =
+ background.green =
+ background.blue =
+ background.gray = png_get_uint_16(buf);
+ }
+
+ else
+ {
+ background.index = 0;
+ background.red = png_get_uint_16(buf);
+ background.green = png_get_uint_16(buf + 2);
+ background.blue = png_get_uint_16(buf + 4);
+ background.gray = 0;
+ }
+
+ png_set_bKGD(png_ptr, info_ptr, &background);
}
#endif
@@ -1565,18 +1771,21 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before hIST");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid hIST after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (!(png_ptr->mode & PNG_HAVE_PLTE))
{
png_warning(png_ptr, "Missing PLTE before hIST");
png_crc_finish(png_ptr, length);
return;
}
+
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST))
{
png_warning(png_ptr, "Duplicate hIST chunk");
@@ -1584,15 +1793,16 @@
return;
}
- num = length / 2 ;
- if (num != (unsigned int) png_ptr->num_palette || num >
- (unsigned int) PNG_MAX_PALETTE_LENGTH)
+ if (length > 2*PNG_MAX_PALETTE_LENGTH ||
+ length != (unsigned int) (2*png_ptr->num_palette))
{
png_warning(png_ptr, "Incorrect hIST chunk length");
png_crc_finish(png_ptr, length);
return;
}
+ num = length / 2 ;
+
for (i = 0; i < num; i++)
{
png_byte buf[2];
@@ -1620,12 +1830,14 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before pHYs");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid pHYs after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
{
png_warning(png_ptr, "Duplicate pHYs chunk");
@@ -1641,6 +1853,7 @@
}
png_crc_read(png_ptr, buf, 9);
+
if (png_crc_finish(png_ptr, 0))
return;
@@ -1663,12 +1876,14 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before oFFs");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid oFFs after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
{
png_warning(png_ptr, "Duplicate oFFs chunk");
@@ -1684,6 +1899,7 @@
}
png_crc_read(png_ptr, buf, 9);
+
if (png_crc_finish(png_ptr, 0))
return;
@@ -1710,12 +1926,14 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before pCAL");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid pCAL after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL))
{
png_warning(png_ptr, "Duplicate pCAL chunk");
@@ -1723,16 +1941,18 @@
return;
}
- png_debug1(2, "Allocating and reading pCAL chunk data (%lu bytes)",
- (unsigned long)(length + 1));
+ png_debug1(2, "Allocating and reading pCAL chunk data (%u bytes)",
+ length + 1);
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
+
if (png_ptr->chunkdata == NULL)
- {
- png_warning(png_ptr, "No memory for pCAL purpose");
- return;
- }
- slength = (png_size_t)length;
+ {
+ png_warning(png_ptr, "No memory for pCAL purpose");
+ return;
+ }
+
+ slength = length;
png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
if (png_crc_finish(png_ptr, 0))
@@ -1751,7 +1971,8 @@
endptr = png_ptr->chunkdata + slength;
/* We need to have at least 12 bytes after the purpose string
- in order to get the parameter information. */
+ * in order to get the parameter information.
+ */
if (endptr <= buf + 12)
{
png_warning(png_ptr, "Invalid pCAL data");
@@ -1769,7 +1990,8 @@
png_debug(3, "Checking pCAL equation type and number of parameters");
/* Check that we have the right number of parameters for known
- equation types. */
+ * equation types.
+ */
if ((type == PNG_EQUATION_LINEAR && nparams != 2) ||
(type == PNG_EQUATION_BASE_E && nparams != 3) ||
(type == PNG_EQUATION_ARBITRARY && nparams != 3) ||
@@ -1780,6 +2002,7 @@
png_ptr->chunkdata = NULL;
return;
}
+
else if (type >= PNG_EQUATION_LAST)
{
png_warning(png_ptr, "Unrecognized equation type for pCAL chunk");
@@ -1789,15 +2012,17 @@
/* Empty loop to move past the units string. */ ;
png_debug(3, "Allocating pCAL parameters array");
+
params = (png_charpp)png_malloc_warn(png_ptr,
- (png_size_t)(nparams * png_sizeof(png_charp)));
+ (png_size_t)(nparams * png_sizeof(png_charp)));
+
if (params == NULL)
- {
- png_free(png_ptr, png_ptr->chunkdata);
- png_ptr->chunkdata = NULL;
- png_warning(png_ptr, "No memory for pCAL params");
- return;
- }
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_warning(png_ptr, "No memory for pCAL params");
+ return;
+ }
/* Get pointers to the start of each parameter string. */
for (i = 0; i < (int)nparams; i++)
@@ -1805,6 +2030,7 @@
buf++; /* Skip the null string terminator from previous parameter. */
png_debug1(3, "Reading pCAL parameter %d", i);
+
for (params[i] = buf; buf <= endptr && *buf != 0x00; buf++)
/* Empty loop to move past each parameter string */ ;
@@ -1833,27 +2059,21 @@
void /* PRIVATE */
png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
- png_charp ep;
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- double width, height;
- png_charp vp;
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
- png_charp swidth, sheight;
-#endif
-#endif
- png_size_t slength;
+ png_size_t slength, i;
+ int state;
png_debug(1, "in png_handle_sCAL");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before sCAL");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid sCAL after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sCAL))
{
png_warning(png_ptr, "Duplicate sCAL chunk");
@@ -1869,17 +2089,21 @@
return;
}
- png_debug1(2, "Allocating and reading sCAL chunk data (%lu bytes)",
- (unsigned long)(length + 1));
+ png_debug1(2, "Allocating and reading sCAL chunk data (%u bytes)",
+ length + 1);
+
png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
+
if (png_ptr->chunkdata == NULL)
{
png_warning(png_ptr, "Out of memory while processing sCAL chunk");
png_crc_finish(png_ptr, length);
return;
}
- slength = (png_size_t)length;
+
+ slength = length;
png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
+ png_ptr->chunkdata[slength] = 0x00; /* Null terminate the last string */
if (png_crc_finish(png_ptr, 0))
{
@@ -1888,103 +2112,50 @@
return;
}
- png_ptr->chunkdata[slength] = 0x00; /* Null terminate the last string */
-
- ep = png_ptr->chunkdata + 1; /* Skip unit byte */
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- width = png_strtod(png_ptr, ep, &vp);
- if (*vp)
+ /* Validate the unit. */
+ if (png_ptr->chunkdata[0] != 1 && png_ptr->chunkdata[0] != 2)
{
- png_warning(png_ptr, "malformed width string in sCAL chunk");
- png_free(png_ptr, png_ptr->chunkdata);
- png_ptr->chunkdata = NULL;
- return;
- }
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
- swidth = (png_charp)png_malloc_warn(png_ptr, png_strlen(ep) + 1);
- if (swidth == NULL)
- {
- png_warning(png_ptr, "Out of memory while processing sCAL chunk width");
- png_free(png_ptr, png_ptr->chunkdata);
- png_ptr->chunkdata = NULL;
- return;
- }
- png_memcpy(swidth, ep, png_strlen(ep));
-#endif
-#endif
-
- for (ep = png_ptr->chunkdata; *ep; ep++)
- /* Empty loop */ ;
- ep++;
-
- if (png_ptr->chunkdata + slength < ep)
- {
- png_warning(png_ptr, "Truncated sCAL chunk");
-#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
- png_free(png_ptr, swidth);
-#endif
+ png_warning(png_ptr, "Invalid sCAL ignored: invalid unit");
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
return;
}
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- height = png_strtod(png_ptr, ep, &vp);
- if (*vp)
- {
- png_warning(png_ptr, "malformed height string in sCAL chunk");
- png_free(png_ptr, png_ptr->chunkdata);
- png_ptr->chunkdata = NULL;
- return;
- }
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
- sheight = (png_charp)png_malloc_warn(png_ptr, png_strlen(ep) + 1);
- if (sheight == NULL)
- {
- png_warning(png_ptr, "Out of memory while processing sCAL chunk height");
- png_free(png_ptr, png_ptr->chunkdata);
- png_ptr->chunkdata = NULL;
- png_free(png_ptr, swidth);
- return;
- }
- png_memcpy(sheight, ep, png_strlen(ep));
-#endif
-#endif
+ /* Validate the ASCII numbers, need two ASCII numbers separated by
+ * a '\0' and they need to fit exactly in the chunk data.
+ */
+ i = 1;
+ state = 0;
- if (png_ptr->chunkdata + slength < ep
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- || width <= 0. || height <= 0.
-#endif
- )
+ if (!png_check_fp_number(png_ptr->chunkdata, slength, &state, &i) ||
+ i >= slength || png_ptr->chunkdata[i++] != 0)
+ png_warning(png_ptr, "Invalid sCAL chunk ignored: bad width format");
+
+ else if (!PNG_FP_IS_POSITIVE(state))
+ png_warning(png_ptr, "Invalid sCAL chunk ignored: non-positive width");
+
+ else
{
- png_warning(png_ptr, "Invalid sCAL data");
- png_free(png_ptr, png_ptr->chunkdata);
- png_ptr->chunkdata = NULL;
-#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
- png_free(png_ptr, swidth);
- png_free(png_ptr, sheight);
-#endif
- return;
+ png_size_t heighti = i;
+
+ state = 0;
+ if (!png_check_fp_number(png_ptr->chunkdata, slength, &state, &i) ||
+ i != slength)
+ png_warning(png_ptr, "Invalid sCAL chunk ignored: bad height format");
+
+ else if (!PNG_FP_IS_POSITIVE(state))
+ png_warning(png_ptr,
+ "Invalid sCAL chunk ignored: non-positive height");
+
+ else
+ /* This is the (only) success case. */
+ png_set_sCAL_s(png_ptr, info_ptr, png_ptr->chunkdata[0],
+ png_ptr->chunkdata+1, png_ptr->chunkdata+heighti);
}
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- png_set_sCAL(png_ptr, info_ptr, png_ptr->chunkdata[0], width, height);
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
- png_set_sCAL_s(png_ptr, info_ptr, png_ptr->chunkdata[0], swidth, sheight);
-#endif
-#endif
-
+ /* Clean up - just free the temporarily allocated buffer. */
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
-#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
- png_free(png_ptr, swidth);
- png_free(png_ptr, sheight);
-#endif
}
#endif
@@ -1999,6 +2170,7 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Out of place tIME chunk");
+
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME))
{
png_warning(png_ptr, "Duplicate tIME chunk");
@@ -2017,6 +2189,7 @@
}
png_crc_read(png_ptr, buf, 7);
+
if (png_crc_finish(png_ptr, 0))
return;
@@ -2053,6 +2226,7 @@
png_crc_finish(png_ptr, length);
return;
}
+
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for tEXt");
@@ -2080,12 +2254,14 @@
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
+
if (png_ptr->chunkdata == NULL)
{
png_warning(png_ptr, "No memory to process text chunk");
return;
}
- slength = (png_size_t)length;
+
+ slength = length;
png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
if (png_crc_finish(png_ptr, skip))
@@ -2106,21 +2282,21 @@
text++;
text_ptr = (png_textp)png_malloc_warn(png_ptr,
- png_sizeof(png_text));
+ png_sizeof(png_text));
+
if (text_ptr == NULL)
{
- png_warning(png_ptr, "Not enough memory to process text chunk");
- png_free(png_ptr, png_ptr->chunkdata);
- png_ptr->chunkdata = NULL;
- return;
+ png_warning(png_ptr, "Not enough memory to process text chunk");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
}
+
text_ptr->compression = PNG_TEXT_COMPRESSION_NONE;
text_ptr->key = key;
-#ifdef PNG_iTXt_SUPPORTED
text_ptr->lang = NULL;
text_ptr->lang_key = NULL;
text_ptr->itxt_length = 0;
-#endif
text_ptr->text = text;
text_ptr->text_length = png_strlen(text);
@@ -2129,8 +2305,9 @@
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_free(png_ptr, text_ptr);
+
if (ret)
- png_warning(png_ptr, "Insufficient memory to process text chunk");
+ png_warning(png_ptr, "Insufficient memory to process text chunk");
}
#endif
@@ -2155,6 +2332,7 @@
png_crc_finish(png_ptr, length);
return;
}
+
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for zTXt");
@@ -2172,24 +2350,28 @@
#ifdef PNG_MAX_MALLOC_64K
/* We will no doubt have problems with chunks even half this size, but
- there is no hard and fast rule to tell us where to stop. */
+ * there is no hard and fast rule to tell us where to stop.
+ */
if (length > (png_uint_32)65535L)
{
- png_warning(png_ptr, "zTXt chunk too large to fit in memory");
- png_crc_finish(png_ptr, length);
- return;
+ png_warning(png_ptr, "zTXt chunk too large to fit in memory");
+ png_crc_finish(png_ptr, length);
+ return;
}
#endif
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
+
if (png_ptr->chunkdata == NULL)
{
- png_warning(png_ptr, "Out of memory processing zTXt chunk");
- return;
+ png_warning(png_ptr, "Out of memory processing zTXt chunk");
+ return;
}
- slength = (png_size_t)length;
+
+ slength = length;
png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
+
if (png_crc_finish(png_ptr, 0))
{
png_free(png_ptr, png_ptr->chunkdata);
@@ -2210,37 +2392,41 @@
png_ptr->chunkdata = NULL;
return;
}
+
else
{
comp_type = *(++text);
+
if (comp_type != PNG_TEXT_COMPRESSION_zTXt)
{
png_warning(png_ptr, "Unknown compression type in zTXt chunk");
comp_type = PNG_TEXT_COMPRESSION_zTXt;
}
+
text++; /* Skip the compression_method byte */
}
+
prefix_len = text - png_ptr->chunkdata;
png_decompress_chunk(png_ptr, comp_type,
- (png_size_t)length, prefix_len, &data_len);
+ (png_size_t)length, prefix_len, &data_len);
text_ptr = (png_textp)png_malloc_warn(png_ptr,
- png_sizeof(png_text));
+ png_sizeof(png_text));
+
if (text_ptr == NULL)
{
- png_warning(png_ptr, "Not enough memory to process zTXt chunk");
- png_free(png_ptr, png_ptr->chunkdata);
- png_ptr->chunkdata = NULL;
- return;
+ png_warning(png_ptr, "Not enough memory to process zTXt chunk");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
}
+
text_ptr->compression = comp_type;
text_ptr->key = png_ptr->chunkdata;
-#ifdef PNG_iTXt_SUPPORTED
text_ptr->lang = NULL;
text_ptr->lang_key = NULL;
text_ptr->itxt_length = 0;
-#endif
text_ptr->text = png_ptr->chunkdata + prefix_len;
text_ptr->text_length = data_len;
@@ -2249,8 +2435,9 @@
png_free(png_ptr, text_ptr);
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
+
if (ret)
- png_error(png_ptr, "Insufficient memory to store zTXt chunk");
+ png_error(png_ptr, "Insufficient memory to store zTXt chunk");
}
#endif
@@ -2276,6 +2463,7 @@
png_crc_finish(png_ptr, length);
return;
}
+
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for iTXt");
@@ -2293,24 +2481,28 @@
#ifdef PNG_MAX_MALLOC_64K
/* We will no doubt have problems with chunks even half this size, but
- there is no hard and fast rule to tell us where to stop. */
+ * there is no hard and fast rule to tell us where to stop.
+ */
if (length > (png_uint_32)65535L)
{
- png_warning(png_ptr, "iTXt chunk too large to fit in memory");
- png_crc_finish(png_ptr, length);
- return;
+ png_warning(png_ptr, "iTXt chunk too large to fit in memory");
+ png_crc_finish(png_ptr, length);
+ return;
}
#endif
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
+
if (png_ptr->chunkdata == NULL)
{
- png_warning(png_ptr, "No memory to process iTXt chunk");
- return;
+ png_warning(png_ptr, "No memory to process iTXt chunk");
+ return;
}
- slength = (png_size_t)length;
+
+ slength = length;
png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
+
if (png_crc_finish(png_ptr, 0))
{
png_free(png_ptr, png_ptr->chunkdata);
@@ -2322,6 +2514,7 @@
for (lang = png_ptr->chunkdata; *lang; lang++)
/* Empty loop */ ;
+
lang++; /* Skip NUL separator */
/* iTXt must have a language tag (possibly empty), two compression bytes,
@@ -2336,14 +2529,24 @@
png_ptr->chunkdata = NULL;
return;
}
+
else
{
- comp_flag = *lang++;
- comp_type = *lang++;
+ comp_flag = *lang++;
+ comp_type = *lang++;
+ }
+
+ if (comp_type || (comp_flag && comp_flag != PNG_TEXT_COMPRESSION_zTXt))
+ {
+ png_warning(png_ptr, "Unknown iTXt compression type or method");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
}
for (lang_key = lang; *lang_key; lang_key++)
/* Empty loop */ ;
+
lang_key++; /* Skip NUL separator */
if (lang_key >= png_ptr->chunkdata + slength)
@@ -2356,7 +2559,9 @@
for (text = lang_key; *text; text++)
/* Empty loop */ ;
+
text++; /* Skip NUL separator */
+
if (text >= png_ptr->chunkdata + slength)
{
png_warning(png_ptr, "Malformed iTXt chunk");
@@ -2368,20 +2573,25 @@
prefix_len = text - png_ptr->chunkdata;
key=png_ptr->chunkdata;
+
if (comp_flag)
- png_decompress_chunk(png_ptr, comp_type,
- (size_t)length, prefix_len, &data_len);
+ png_decompress_chunk(png_ptr, comp_type,
+ (size_t)length, prefix_len, &data_len);
+
else
- data_len = png_strlen(png_ptr->chunkdata + prefix_len);
+ data_len = png_strlen(png_ptr->chunkdata + prefix_len);
+
text_ptr = (png_textp)png_malloc_warn(png_ptr,
- png_sizeof(png_text));
+ png_sizeof(png_text));
+
if (text_ptr == NULL)
{
- png_warning(png_ptr, "Not enough memory to process iTXt chunk");
- png_free(png_ptr, png_ptr->chunkdata);
- png_ptr->chunkdata = NULL;
- return;
+ png_warning(png_ptr, "Not enough memory to process iTXt chunk");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
}
+
text_ptr->compression = (int)comp_flag + 1;
text_ptr->lang_key = png_ptr->chunkdata + (lang_key - key);
text_ptr->lang = png_ptr->chunkdata + (lang - key);
@@ -2395,16 +2605,18 @@
png_free(png_ptr, text_ptr);
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
+
if (ret)
- png_error(png_ptr, "Insufficient memory to store iTXt chunk");
+ png_error(png_ptr, "Insufficient memory to store iTXt chunk");
}
#endif
/* This function is called when we haven't found a handler for a
- chunk. If there isn't a problem with the chunk itself (ie bad
- chunk name, CRC, or a critical chunk), the chunk is silently ignored
- -- unless the PNG_FLAG_UNKNOWN_CHUNKS_SUPPORTED flag is on in which
- case it will be saved away to be written out later. */
+ * chunk. If there isn't a problem with the chunk itself (ie bad
+ * chunk name, CRC, or a critical chunk), the chunk is silently ignored
+ * -- unless the PNG_FLAG_UNKNOWN_CHUNKS_SUPPORTED flag is on in which
+ * case it will be saved away to be written out later.
+ */
void /* PRIVATE */
png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@@ -2420,6 +2632,7 @@
png_crc_finish(png_ptr, length);
return;
}
+
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for unknown chunk");
@@ -2431,22 +2644,21 @@
if (png_ptr->mode & PNG_HAVE_IDAT)
{
- PNG_IDAT;
- if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) /* Not an IDAT */
+ if (png_ptr->chunk_name != png_IDAT)
png_ptr->mode |= PNG_AFTER_IDAT;
}
- if (!(png_ptr->chunk_name[0] & 0x20))
+ if (PNG_CHUNK_CRITICAL(png_ptr->chunk_name))
{
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
- PNG_HANDLE_CHUNK_ALWAYS
+ if (png_chunk_unknown_handling(png_ptr, png_ptr->chunk_name) !=
+ PNG_HANDLE_CHUNK_ALWAYS
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
- && png_ptr->read_user_chunk_fn == NULL
+ && png_ptr->read_user_chunk_fn == NULL
#endif
- )
+ )
#endif
- png_chunk_error(png_ptr, "unknown critical chunk");
+ png_chunk_error(png_ptr, "unknown critical chunk");
}
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
@@ -2454,56 +2666,70 @@
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
|| (png_ptr->read_user_chunk_fn != NULL)
#endif
- )
+ )
{
#ifdef PNG_MAX_MALLOC_64K
- if (length > (png_uint_32)65535L)
- {
- png_warning(png_ptr, "unknown chunk too large to fit in memory");
- skip = length - (png_uint_32)65535L;
- length = (png_uint_32)65535L;
- }
+ if (length > 65535)
+ {
+ png_warning(png_ptr, "unknown chunk too large to fit in memory");
+ skip = length - 65535;
+ length = 65535;
+ }
#endif
- png_memcpy((png_charp)png_ptr->unknown_chunk.name,
- (png_charp)png_ptr->chunk_name,
- png_sizeof(png_ptr->unknown_chunk.name));
- png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1]
- = '\0';
- png_ptr->unknown_chunk.size = (png_size_t)length;
- if (length == 0)
+
+ /* TODO: this code is very close to the unknown handling in pngpread.c,
+ * maybe it can be put into a common utility routine?
+ * png_struct::unknown_chunk is just used as a temporary variable, along
+ * with the data into which the chunk is read. These can be eliminated.
+ */
+ PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name);
+ png_ptr->unknown_chunk.size = (png_size_t)length;
+
+ if (length == 0)
png_ptr->unknown_chunk.data = NULL;
- else
- {
+
+ else
+ {
png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
- png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
- }
+ png_crc_read(png_ptr, png_ptr->unknown_chunk.data, length);
+ }
+
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
- if (png_ptr->read_user_chunk_fn != NULL)
- {
- /* Callback to user unknown chunk handler */
- int ret;
- ret = (*(png_ptr->read_user_chunk_fn))
- (png_ptr, &png_ptr->unknown_chunk);
- if (ret < 0)
- png_chunk_error(png_ptr, "error in user chunk");
- if (ret == 0)
- {
- if (!(png_ptr->chunk_name[0] & 0x20))
+ if (png_ptr->read_user_chunk_fn != NULL)
+ {
+ /* Callback to user unknown chunk handler */
+ int ret;
+
+ ret = (*(png_ptr->read_user_chunk_fn))
+ (png_ptr, &png_ptr->unknown_chunk);
+
+ if (ret < 0)
+ png_chunk_error(png_ptr, "error in user chunk");
+
+ if (ret == 0)
+ {
+ if (PNG_CHUNK_CRITICAL(png_ptr->chunk_name))
+ {
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
- PNG_HANDLE_CHUNK_ALWAYS)
+ if (png_chunk_unknown_handling(png_ptr, png_ptr->chunk_name) !=
+ PNG_HANDLE_CHUNK_ALWAYS)
#endif
- png_chunk_error(png_ptr, "unknown critical chunk");
- png_set_unknown_chunks(png_ptr, info_ptr,
- &png_ptr->unknown_chunk, 1);
- }
- }
- else
+ png_chunk_error(png_ptr, "unknown critical chunk");
+ }
+
+ png_set_unknown_chunks(png_ptr, info_ptr,
+ &png_ptr->unknown_chunk, 1);
+ }
+ }
+
+ else
#endif
- png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
- png_free(png_ptr, png_ptr->unknown_chunk.data);
- png_ptr->unknown_chunk.data = NULL;
+ png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
+
+ png_free(png_ptr, png_ptr->unknown_chunk.data);
+ png_ptr->unknown_chunk.data = NULL;
}
+
else
#endif
skip = length;
@@ -2516,251 +2742,529 @@
}
/* This function is called to verify that a chunk name is valid.
- This function can't have the "critical chunk check" incorporated
- into it, since in the future we will need to be able to call user
- functions to handle unknown critical chunks after we check that
- the chunk name itself is valid. */
+ * This function can't have the "critical chunk check" incorporated
+ * into it, since in the future we will need to be able to call user
+ * functions to handle unknown critical chunks after we check that
+ * the chunk name itself is valid.
+ */
-#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
+/* Bit hacking: the test for an invalid byte in the 4 byte chunk name is:
+ *
+ * ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
+ */
void /* PRIVATE */
-png_check_chunk_name(png_structp png_ptr, png_bytep chunk_name)
+png_check_chunk_name(png_structp png_ptr, png_uint_32 chunk_name)
{
+ int i;
+
png_debug(1, "in png_check_chunk_name");
- if (isnonalpha(chunk_name[0]) || isnonalpha(chunk_name[1]) ||
- isnonalpha(chunk_name[2]) || isnonalpha(chunk_name[3]))
+
+ for (i=1; i<=4; ++i)
{
- png_chunk_error(png_ptr, "invalid chunk type");
+ int c = chunk_name & 0xff;
+
+ if (c < 65 || c > 122 || (c > 90 && c < 97))
+ png_chunk_error(png_ptr, "invalid chunk type");
+
+ chunk_name >>= 8;
}
}
-/* Combines the row recently read in with the existing pixels in the
- row. This routine takes care of alpha and transparency if requested.
- This routine also handles the two methods of progressive display
- of interlaced images, depending on the mask value.
- The mask value describes which pixels are to be combined with
- the row. The pattern always repeats every 8 pixels, so just 8
- bits are needed. A one indicates the pixel is to be combined,
- a zero indicates the pixel is to be skipped. This is in addition
- to any alpha or transparency value associated with the pixel. If
- you want all pixels to be combined, pass 0xff (255) in mask. */
-
+/* Combines the row recently read in with the existing pixels in the row. This
+ * routine takes care of alpha and transparency if requested. This routine also
+ * handles the two methods of progressive display of interlaced images,
+ * depending on the 'display' value; if 'display' is true then the whole row
+ * (dp) is filled from the start by replicating the available pixels. If
+ * 'display' is false only those pixels present in the pass are filled in.
+ */
void /* PRIVATE */
-png_combine_row(png_structp png_ptr, png_bytep row, int mask)
+png_combine_row(png_structp png_ptr, png_bytep dp, int display)
{
+ unsigned int pixel_depth = png_ptr->transformed_pixel_depth;
+ png_const_bytep sp = png_ptr->row_buf + 1;
+ png_uint_32 row_width = png_ptr->width;
+ unsigned int pass = png_ptr->pass;
+ png_bytep end_ptr = 0;
+ png_byte end_byte = 0;
+ unsigned int end_mask;
+
png_debug(1, "in png_combine_row");
- if (mask == 0xff)
+
+ /* Added in 1.5.6: it should not be possible to enter this routine until at
+ * least one row has been read from the PNG data and transformed.
+ */
+ if (pixel_depth == 0)
+ png_error(png_ptr, "internal row logic error");
+
+ /* Added in 1.5.4: the pixel depth should match the information returned by
+ * any call to png_read_update_info at this point. Do not continue if we got
+ * this wrong.
+ */
+ if (png_ptr->info_rowbytes != 0 && png_ptr->info_rowbytes !=
+ PNG_ROWBYTES(pixel_depth, row_width))
+ png_error(png_ptr, "internal row size calculation error");
+
+ /* Don't expect this to ever happen: */
+ if (row_width == 0)
+ png_error(png_ptr, "internal row width error");
+
+ /* Preserve the last byte in cases where only part of it will be overwritten,
+ * the multiply below may overflow, we don't care because ANSI-C guarantees
+ * we get the low bits.
+ */
+ end_mask = (pixel_depth * row_width) & 7;
+ if (end_mask != 0)
{
- png_memcpy(row, png_ptr->row_buf + 1,
- PNG_ROWBYTES(png_ptr->row_info.pixel_depth, png_ptr->width));
+ /* end_ptr == NULL is a flag to say do nothing */
+ end_ptr = dp + PNG_ROWBYTES(pixel_depth, row_width) - 1;
+ end_byte = *end_ptr;
+# ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_PACKSWAP) /* little-endian byte */
+ end_mask = 0xff << end_mask;
+
+ else /* big-endian byte */
+# endif
+ end_mask = 0xff >> end_mask;
+ /* end_mask is now the bits to *keep* from the destination row */
}
- else
+
+ /* For non-interlaced images this reduces to a png_memcpy(). A png_memcpy()
+ * will also happen if interlacing isn't supported or if the application
+ * does not call png_set_interlace_handling(). In the latter cases the
+ * caller just gets a sequence of the unexpanded rows from each interlace
+ * pass.
+ */
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE) &&
+ pass < 6 && (display == 0 ||
+ /* The following copies everything for 'display' on passes 0, 2 and 4. */
+ (display == 1 && (pass & 1) != 0)))
{
- switch (png_ptr->row_info.pixel_depth)
+ /* Narrow images may have no bits in a pass; the caller should handle
+ * this, but this test is cheap:
+ */
+ if (row_width <= PNG_PASS_START_COL(pass))
+ return;
+
+ if (pixel_depth < 8)
{
- case 1:
- {
- png_bytep sp = png_ptr->row_buf + 1;
- png_bytep dp = row;
- int s_inc, s_start, s_end;
- int m = 0x80;
- int shift;
- png_uint_32 i;
- png_uint_32 row_width = png_ptr->width;
+ /* For pixel depths up to 4 bpp the 8-pixel mask can be expanded to fit
+ * into 32 bits, then a single loop over the bytes using the four byte
+ * values in the 32-bit mask can be used. For the 'display' option the
+ * expanded mask may also not require any masking within a byte. To
+ * make this work the PACKSWAP option must be taken into account - it
+ * simply requires the pixels to be reversed in each byte.
+ *
+ * The 'regular' case requires a mask for each of the first 6 passes,
+ * the 'display' case does a copy for the even passes in the range
+ * 0..6. This has already been handled in the test above.
+ *
+ * The masks are arranged as four bytes with the first byte to use in
+ * the lowest bits (little-endian) regardless of the order (PACKSWAP or
+ * not) of the pixels in each byte.
+ *
+ * NOTE: the whole of this logic depends on the caller of this function
+ * only calling it on rows appropriate to the pass. This function only
+ * understands the 'x' logic; the 'y' logic is handled by the caller.
+ *
+ * The following defines allow generation of compile time constant bit
+ * masks for each pixel depth and each possibility of swapped or not
+ * swapped bytes. Pass 'p' is in the range 0..6; 'x', a pixel index,
+ * is in the range 0..7; and the result is 1 if the pixel is to be
+ * copied in the pass, 0 if not. 'S' is for the sparkle method, 'B'
+ * for the block method.
+ *
+ * With some compilers a compile time expression of the general form:
+ *
+ * (shift >= 32) ? (a >> (shift-32)) : (b >> shift)
+ *
+ * Produces warnings with values of 'shift' in the range 33 to 63
+ * because the right hand side of the ?: expression is evaluated by
+ * the compiler even though it isn't used. Microsoft Visual C (various
+ * versions) and the Intel C compiler are known to do this. To avoid
+ * this the following macros are used in 1.5.6. This is a temporary
+ * solution to avoid destabilizing the code during the release process.
+ */
+# if PNG_USE_COMPILE_TIME_MASKS
+# define PNG_LSR(x,s) ((x)>>((s) & 0x1f))
+# define PNG_LSL(x,s) ((x)<<((s) & 0x1f))
+# else
+# define PNG_LSR(x,s) ((x)>>(s))
+# define PNG_LSL(x,s) ((x)<<(s))
+# endif
+# define S_COPY(p,x) (((p)<4 ? PNG_LSR(0x80088822,(3-(p))*8+(7-(x))) :\
+ PNG_LSR(0xaa55ff00,(7-(p))*8+(7-(x)))) & 1)
+# define B_COPY(p,x) (((p)<4 ? PNG_LSR(0xff0fff33,(3-(p))*8+(7-(x))) :\
+ PNG_LSR(0xff55ff00,(7-(p))*8+(7-(x)))) & 1)
-#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ /* Return a mask for pass 'p' pixel 'x' at depth 'd'. The mask is
+ * little endian - the first pixel is at bit 0 - however the extra
+ * parameter 's' can be set to cause the mask position to be swapped
+ * within each byte, to match the PNG format. This is done by XOR of
+ * the shift with 7, 6 or 4 for bit depths 1, 2 and 4.
+ */
+# define PIXEL_MASK(p,x,d,s) \
+ (PNG_LSL(((PNG_LSL(1U,(d)))-1),(((x)*(d))^((s)?8-(d):0))))
+
+ /* Hence generate the appropriate 'block' or 'sparkle' pixel copy mask.
+ */
+# define S_MASKx(p,x,d,s) (S_COPY(p,x)?PIXEL_MASK(p,x,d,s):0)
+# define B_MASKx(p,x,d,s) (B_COPY(p,x)?PIXEL_MASK(p,x,d,s):0)
+
+ /* Combine 8 of these to get the full mask. For the 1-bpp and 2-bpp
+ * cases the result needs replicating, for the 4-bpp case the above
+ * generates a full 32 bits.
+ */
+# define MASK_EXPAND(m,d) ((m)*((d)==1?0x01010101:((d)==2?0x00010001:1)))
+
+# define S_MASK(p,d,s) MASK_EXPAND(S_MASKx(p,0,d,s) + S_MASKx(p,1,d,s) +\
+ S_MASKx(p,2,d,s) + S_MASKx(p,3,d,s) + S_MASKx(p,4,d,s) +\
+ S_MASKx(p,5,d,s) + S_MASKx(p,6,d,s) + S_MASKx(p,7,d,s), d)
+
+# define B_MASK(p,d,s) MASK_EXPAND(B_MASKx(p,0,d,s) + B_MASKx(p,1,d,s) +\
+ B_MASKx(p,2,d,s) + B_MASKx(p,3,d,s) + B_MASKx(p,4,d,s) +\
+ B_MASKx(p,5,d,s) + B_MASKx(p,6,d,s) + B_MASKx(p,7,d,s), d)
+
+#if PNG_USE_COMPILE_TIME_MASKS
+ /* Utility macros to construct all the masks for a depth/swap
+ * combination. The 's' parameter says whether the format is PNG
+ * (big endian bytes) or not. Only the three odd-numbered passes are
+ * required for the display/block algorithm.
+ */
+# define S_MASKS(d,s) { S_MASK(0,d,s), S_MASK(1,d,s), S_MASK(2,d,s),\
+ S_MASK(3,d,s), S_MASK(4,d,s), S_MASK(5,d,s) }
+
+# define B_MASKS(d,s) { B_MASK(1,d,s), S_MASK(3,d,s), S_MASK(5,d,s) }
+
+# define DEPTH_INDEX(d) ((d)==1?0:((d)==2?1:2))
+
+ /* Hence the pre-compiled masks indexed by PACKSWAP (or not), depth and
+ * then pass:
+ */
+ static PNG_CONST png_uint_32 row_mask[2/*PACKSWAP*/][3/*depth*/][6] =
+ {
+ /* Little-endian byte masks for PACKSWAP */
+ { S_MASKS(1,0), S_MASKS(2,0), S_MASKS(4,0) },
+ /* Normal (big-endian byte) masks - PNG format */
+ { S_MASKS(1,1), S_MASKS(2,1), S_MASKS(4,1) }
+ };
+
+ /* display_mask has only three entries for the odd passes, so index by
+ * pass>>1.
+ */
+ static PNG_CONST png_uint_32 display_mask[2][3][3] =
+ {
+ /* Little-endian byte masks for PACKSWAP */
+ { B_MASKS(1,0), B_MASKS(2,0), B_MASKS(4,0) },
+ /* Normal (big-endian byte) masks - PNG format */
+ { B_MASKS(1,1), B_MASKS(2,1), B_MASKS(4,1) }
+ };
+
+# define MASK(pass,depth,display,png)\
+ ((display)?display_mask[png][DEPTH_INDEX(depth)][pass>>1]:\
+ row_mask[png][DEPTH_INDEX(depth)][pass])
+
+#else /* !PNG_USE_COMPILE_TIME_MASKS */
+ /* This is the runtime alternative: it seems unlikely that this will
+ * ever be either smaller or faster than the compile time approach.
+ */
+# define MASK(pass,depth,display,png)\
+ ((display)?B_MASK(pass,depth,png):S_MASK(pass,depth,png))
+#endif /* !PNG_USE_COMPILE_TIME_MASKS */
+
+ /* Use the appropriate mask to copy the required bits. In some cases
+ * the byte mask will be 0 or 0xff, optimize these cases. row_width is
+ * the number of pixels, but the code copies bytes, so it is necessary
+ * to special case the end.
+ */
+ png_uint_32 pixels_per_byte = 8 / pixel_depth;
+ png_uint_32 mask;
+
+# ifdef PNG_READ_PACKSWAP_SUPPORTED
if (png_ptr->transformations & PNG_PACKSWAP)
- {
- s_start = 0;
- s_end = 7;
- s_inc = 1;
- }
+ mask = MASK(pass, pixel_depth, display, 0);
+
else
-#endif
- {
- s_start = 7;
- s_end = 0;
- s_inc = -1;
- }
+# endif
+ mask = MASK(pass, pixel_depth, display, 1);
- shift = s_start;
-
- for (i = 0; i < row_width; i++)
- {
- if (m & mask)
- {
- int value;
-
- value = (*sp >> shift) & 0x01;
- *dp &= (png_byte)((0x7f7f >> (7 - shift)) & 0xff);
- *dp |= (png_byte)(value << shift);
- }
-
- if (shift == s_end)
- {
- shift = s_start;
- sp++;
- dp++;
- }
- else
- shift += s_inc;
-
- if (m == 1)
- m = 0x80;
- else
- m >>= 1;
- }
- break;
- }
- case 2:
+ for (;;)
{
- png_bytep sp = png_ptr->row_buf + 1;
- png_bytep dp = row;
- int s_start, s_end, s_inc;
- int m = 0x80;
- int shift;
- png_uint_32 i;
- png_uint_32 row_width = png_ptr->width;
- int value;
+ png_uint_32 m;
-#ifdef PNG_READ_PACKSWAP_SUPPORTED
- if (png_ptr->transformations & PNG_PACKSWAP)
+ /* It doesn't matter in the following if png_uint_32 has more than
+ * 32 bits because the high bits always match those in m<<24; it is,
+ * however, essential to use OR here, not +, because of this.
+ */
+ m = mask;
+ mask = (m >> 8) | (m << 24); /* rotate right to good compilers */
+ m &= 0xff;
+
+ if (m != 0) /* something to copy */
{
- s_start = 0;
- s_end = 6;
- s_inc = 2;
- }
- else
-#endif
- {
- s_start = 6;
- s_end = 0;
- s_inc = -2;
- }
-
- shift = s_start;
-
- for (i = 0; i < row_width; i++)
- {
- if (m & mask)
- {
- value = (*sp >> shift) & 0x03;
- *dp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
- *dp |= (png_byte)(value << shift);
- }
-
- if (shift == s_end)
- {
- shift = s_start;
- sp++;
- dp++;
- }
+ if (m != 0xff)
+ *dp = (png_byte)((*dp & ~m) | (*sp & m));
else
- shift += s_inc;
- if (m == 1)
- m = 0x80;
- else
- m >>= 1;
+ *dp = *sp;
}
- break;
- }
- case 4:
- {
- png_bytep sp = png_ptr->row_buf + 1;
- png_bytep dp = row;
- int s_start, s_end, s_inc;
- int m = 0x80;
- int shift;
- png_uint_32 i;
- png_uint_32 row_width = png_ptr->width;
- int value;
-#ifdef PNG_READ_PACKSWAP_SUPPORTED
- if (png_ptr->transformations & PNG_PACKSWAP)
- {
- s_start = 0;
- s_end = 4;
- s_inc = 4;
- }
- else
-#endif
- {
- s_start = 4;
- s_end = 0;
- s_inc = -4;
- }
- shift = s_start;
+ /* NOTE: this may overwrite the last byte with garbage if the image
+ * is not an exact number of bytes wide; libpng has always done
+ * this.
+ */
+ if (row_width <= pixels_per_byte)
+ break; /* May need to restore part of the last byte */
- for (i = 0; i < row_width; i++)
- {
- if (m & mask)
- {
- value = (*sp >> shift) & 0xf;
- *dp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
- *dp |= (png_byte)(value << shift);
- }
-
- if (shift == s_end)
- {
- shift = s_start;
- sp++;
- dp++;
- }
- else
- shift += s_inc;
- if (m == 1)
- m = 0x80;
- else
- m >>= 1;
- }
- break;
- }
- default:
- {
- png_bytep sp = png_ptr->row_buf + 1;
- png_bytep dp = row;
- png_size_t pixel_bytes = (png_ptr->row_info.pixel_depth >> 3);
- png_uint_32 i;
- png_uint_32 row_width = png_ptr->width;
- png_byte m = 0x80;
-
-
- for (i = 0; i < row_width; i++)
- {
- if (m & mask)
- {
- png_memcpy(dp, sp, pixel_bytes);
- }
-
- sp += pixel_bytes;
- dp += pixel_bytes;
-
- if (m == 1)
- m = 0x80;
- else
- m >>= 1;
- }
- break;
+ row_width -= pixels_per_byte;
+ ++dp;
+ ++sp;
}
}
+
+ else /* pixel_depth >= 8 */
+ {
+ unsigned int bytes_to_copy, bytes_to_jump;
+
+ /* Validate the depth - it must be a multiple of 8 */
+ if (pixel_depth & 7)
+ png_error(png_ptr, "invalid user transform pixel depth");
+
+ pixel_depth >>= 3; /* now in bytes */
+ row_width *= pixel_depth;
+
+ /* Regardless of pass number the Adam 7 interlace always results in a
+ * fixed number of pixels to copy then to skip. There may be a
+ * different number of pixels to skip at the start though.
+ */
+ {
+ unsigned int offset = PNG_PASS_START_COL(pass) * pixel_depth;
+
+ row_width -= offset;
+ dp += offset;
+ sp += offset;
+ }
+
+ /* Work out the bytes to copy. */
+ if (display)
+ {
+ /* When doing the 'block' algorithm the pixel in the pass gets
+ * replicated to adjacent pixels. This is why the even (0,2,4,6)
+ * passes are skipped above - the entire expanded row is copied.
+ */
+ bytes_to_copy = (1<<((6-pass)>>1)) * pixel_depth;
+
+ /* But don't allow this number to exceed the actual row width. */
+ if (bytes_to_copy > row_width)
+ bytes_to_copy = row_width;
+ }
+
+ else /* normal row; Adam7 only ever gives us one pixel to copy. */
+ bytes_to_copy = pixel_depth;
+
+ /* In Adam7 there is a constant offset between where the pixels go. */
+ bytes_to_jump = PNG_PASS_COL_OFFSET(pass) * pixel_depth;
+
+ /* And simply copy these bytes. Some optimization is possible here,
+ * depending on the value of 'bytes_to_copy'. Special case the low
+ * byte counts, which we know to be frequent.
+ *
+ * Notice that these cases all 'return' rather than 'break' - this
+ * avoids an unnecessary test on whether to restore the last byte
+ * below.
+ */
+ switch (bytes_to_copy)
+ {
+ case 1:
+ for (;;)
+ {
+ *dp = *sp;
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ dp += bytes_to_jump;
+ sp += bytes_to_jump;
+ row_width -= bytes_to_jump;
+ }
+
+ case 2:
+ /* There is a possibility of a partial copy at the end here; this
+ * slows the code down somewhat.
+ */
+ do
+ {
+ dp[0] = sp[0], dp[1] = sp[1];
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ sp += bytes_to_jump;
+ dp += bytes_to_jump;
+ row_width -= bytes_to_jump;
+ }
+ while (row_width > 1);
+
+ /* And there can only be one byte left at this point: */
+ *dp = *sp;
+ return;
+
+ case 3:
+ /* This can only be the RGB case, so each copy is exactly one
+ * pixel and it is not necessary to check for a partial copy.
+ */
+ for(;;)
+ {
+ dp[0] = sp[0], dp[1] = sp[1], dp[2] = sp[2];
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ sp += bytes_to_jump;
+ dp += bytes_to_jump;
+ row_width -= bytes_to_jump;
+ }
+
+ default:
+#if PNG_ALIGN_TYPE != PNG_ALIGN_NONE
+ /* Check for double byte alignment and, if possible, use a
+ * 16-bit copy. Don't attempt this for narrow images - ones that
+ * are less than an interlace panel wide. Don't attempt it for
+ * wide bytes_to_copy either - use the png_memcpy there.
+ */
+ if (bytes_to_copy < 16 /*else use png_memcpy*/ &&
+ png_isaligned(dp, png_uint_16) &&
+ png_isaligned(sp, png_uint_16) &&
+ bytes_to_copy % sizeof (png_uint_16) == 0 &&
+ bytes_to_jump % sizeof (png_uint_16) == 0)
+ {
+ /* Everything is aligned for png_uint_16 copies, but try for
+ * png_uint_32 first.
+ */
+ if (png_isaligned(dp, png_uint_32) &&
+ png_isaligned(sp, png_uint_32) &&
+ bytes_to_copy % sizeof (png_uint_32) == 0 &&
+ bytes_to_jump % sizeof (png_uint_32) == 0)
+ {
+ png_uint_32p dp32 = (png_uint_32p)dp;
+ png_const_uint_32p sp32 = (png_const_uint_32p)sp;
+ unsigned int skip = (bytes_to_jump-bytes_to_copy) /
+ sizeof (png_uint_32);
+
+ do
+ {
+ size_t c = bytes_to_copy;
+ do
+ {
+ *dp32++ = *sp32++;
+ c -= sizeof (png_uint_32);
+ }
+ while (c > 0);
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ dp32 += skip;
+ sp32 += skip;
+ row_width -= bytes_to_jump;
+ }
+ while (bytes_to_copy <= row_width);
+
+ /* Get to here when the row_width truncates the final copy.
+ * There will be 1-3 bytes left to copy, so don't try the
+ * 16-bit loop below.
+ */
+ dp = (png_bytep)dp32;
+ sp = (png_const_bytep)sp32;
+ do
+ *dp++ = *sp++;
+ while (--row_width > 0);
+ return;
+ }
+
+ /* Else do it in 16-bit quantities, but only if the size is
+ * not too large.
+ */
+ else
+ {
+ png_uint_16p dp16 = (png_uint_16p)dp;
+ png_const_uint_16p sp16 = (png_const_uint_16p)sp;
+ unsigned int skip = (bytes_to_jump-bytes_to_copy) /
+ sizeof (png_uint_16);
+
+ do
+ {
+ size_t c = bytes_to_copy;
+ do
+ {
+ *dp16++ = *sp16++;
+ c -= sizeof (png_uint_16);
+ }
+ while (c > 0);
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ dp16 += skip;
+ sp16 += skip;
+ row_width -= bytes_to_jump;
+ }
+ while (bytes_to_copy <= row_width);
+
+ /* End of row - 1 byte left, bytes_to_copy > row_width: */
+ dp = (png_bytep)dp16;
+ sp = (png_const_bytep)sp16;
+ do
+ *dp++ = *sp++;
+ while (--row_width > 0);
+ return;
+ }
+ }
+#endif /* PNG_ALIGN_ code */
+
+ /* The true default - use a png_memcpy: */
+ for (;;)
+ {
+ png_memcpy(dp, sp, bytes_to_copy);
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ sp += bytes_to_jump;
+ dp += bytes_to_jump;
+ row_width -= bytes_to_jump;
+ if (bytes_to_copy > row_width)
+ bytes_to_copy = row_width;
+ }
+ }
+
+ /* NOT REACHED*/
+ } /* pixel_depth >= 8 */
+
+ /* Here if pixel_depth < 8 to check 'end_ptr' below. */
}
+ else
+#endif
+
+ /* If here then the switch above wasn't used so just png_memcpy the whole row
+ * from the temporary row buffer (notice that this overwrites the end of the
+ * destination row if it is a partial byte.)
+ */
+ png_memcpy(dp, sp, PNG_ROWBYTES(pixel_depth, row_width));
+
+ /* Restore the overwritten bits from the last byte if necessary. */
+ if (end_ptr != NULL)
+ *end_ptr = (png_byte)((end_byte & end_mask) | (*end_ptr & ~end_mask));
}
#ifdef PNG_READ_INTERLACING_SUPPORTED
-/* OLD pre-1.0.9 interface:
-void png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
- png_uint_32 transformations)
- */
void /* PRIVATE */
-png_do_read_interlace(png_structp png_ptr)
+png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
+ png_uint_32 transformations /* Because these may affect the byte layout */)
{
- png_row_infop row_info = &(png_ptr->row_info);
- png_bytep row = png_ptr->row_buf + 1;
- int pass = png_ptr->pass;
- png_uint_32 transformations = png_ptr->transformations;
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Offset to next interlace block */
- PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
png_debug(1, "in png_do_read_interlace");
if (row != NULL && row_info != NULL)
@@ -2791,6 +3295,7 @@
s_end = 0;
s_inc = -1;
}
+
else
#endif
{
@@ -2808,24 +3313,29 @@
{
*dp &= (png_byte)((0x7f7f >> (7 - dshift)) & 0xff);
*dp |= (png_byte)(v << dshift);
+
if (dshift == s_end)
{
dshift = s_start;
dp--;
}
+
else
dshift += s_inc;
}
+
if (sshift == s_end)
{
sshift = s_start;
sp--;
}
+
else
sshift += s_inc;
}
break;
}
+
case 2:
{
png_bytep sp = row + (png_uint_32)((row_info->width - 1) >> 2);
@@ -2844,6 +3354,7 @@
s_end = 0;
s_inc = -2;
}
+
else
#endif
{
@@ -2864,24 +3375,29 @@
{
*dp &= (png_byte)((0x3f3f >> (6 - dshift)) & 0xff);
*dp |= (png_byte)(v << dshift);
+
if (dshift == s_end)
{
dshift = s_start;
dp--;
}
+
else
dshift += s_inc;
}
+
if (sshift == s_end)
{
sshift = s_start;
sp--;
}
+
else
sshift += s_inc;
}
break;
}
+
case 4:
{
png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 1);
@@ -2900,6 +3416,7 @@
s_end = 0;
s_inc = -4;
}
+
else
#endif
{
@@ -2912,36 +3429,43 @@
for (i = 0; i < row_info->width; i++)
{
- png_byte v = (png_byte)((*sp >> sshift) & 0xf);
+ png_byte v = (png_byte)((*sp >> sshift) & 0x0f);
int j;
for (j = 0; j < jstop; j++)
{
*dp &= (png_byte)((0xf0f >> (4 - dshift)) & 0xff);
*dp |= (png_byte)(v << dshift);
+
if (dshift == s_end)
{
dshift = s_start;
dp--;
}
+
else
dshift += s_inc;
}
+
if (sshift == s_end)
{
sshift = s_start;
sp--;
}
+
else
sshift += s_inc;
}
break;
}
+
default:
{
png_size_t pixel_bytes = (row_info->pixel_depth >> 3);
+
png_bytep sp = row + (png_size_t)(row_info->width - 1)
* pixel_bytes;
+
png_bytep dp = row + (png_size_t)(final_width - 1) * pixel_bytes;
int jstop = png_pass_inc[pass];
@@ -2953,16 +3477,19 @@
int j;
png_memcpy(v, sp, pixel_bytes);
+
for (j = 0; j < jstop; j++)
{
png_memcpy(dp, v, pixel_bytes);
dp -= pixel_bytes;
}
+
sp -= pixel_bytes;
}
break;
}
}
+
row_info->width = final_width;
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width);
}
@@ -2972,128 +3499,252 @@
}
#endif /* PNG_READ_INTERLACING_SUPPORTED */
-void /* PRIVATE */
-png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep row,
- png_bytep prev_row, int filter)
+static void
+png_read_filter_row_sub(png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row)
{
- png_debug(1, "in png_read_filter_row");
- png_debug2(2, "row = %lu, filter = %d",
- (unsigned long)png_ptr->row_number, filter);
- switch (filter)
+ png_size_t i;
+ png_size_t istop = row_info->rowbytes;
+ unsigned int bpp = (row_info->pixel_depth + 7) >> 3;
+ png_bytep rp = row + bpp;
+
+ PNG_UNUSED(prev_row)
+
+ for (i = bpp; i < istop; i++)
{
- case PNG_FILTER_VALUE_NONE:
- break;
- case PNG_FILTER_VALUE_SUB:
- {
- png_uint_32 i;
- png_uint_32 istop = row_info->rowbytes;
- png_uint_32 bpp = (row_info->pixel_depth + 7) >> 3;
- png_bytep rp = row + bpp;
- png_bytep lp = row;
+ *rp = (png_byte)(((int)(*rp) + (int)(*(rp-bpp))) & 0xff);
+ rp++;
+ }
+}
- for (i = bpp; i < istop; i++)
- {
- *rp = (png_byte)(((int)(*rp) + (int)(*lp++)) & 0xff);
- rp++;
- }
+static void
+png_read_filter_row_up(png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row)
+{
+ png_size_t i;
+ png_size_t istop = row_info->rowbytes;
+ png_bytep rp = row;
+ png_const_bytep pp = prev_row;
+
+ for (i = 0; i < istop; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
+ rp++;
+ }
+}
+
+static void
+png_read_filter_row_avg(png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row)
+{
+ png_size_t i;
+ png_bytep rp = row;
+ png_const_bytep pp = prev_row;
+ unsigned int bpp = (row_info->pixel_depth + 7) >> 3;
+ png_size_t istop = row_info->rowbytes - bpp;
+
+ for (i = 0; i < bpp; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) +
+ ((int)(*pp++) / 2 )) & 0xff);
+
+ rp++;
+ }
+
+ for (i = 0; i < istop; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) +
+ (int)(*pp++ + *(rp-bpp)) / 2 ) & 0xff);
+
+ rp++;
+ }
+}
+
+static void
+png_read_filter_row_paeth_1byte_pixel(png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row)
+{
+ png_bytep rp_end = row + row_info->rowbytes;
+ int a, c;
+
+ /* First pixel/byte */
+ c = *prev_row++;
+ a = *row + c;
+ *row++ = (png_byte)a;
+
+ /* Remainder */
+ while (row < rp_end)
+ {
+ int b, pa, pb, pc, p;
+
+ a &= 0xff; /* From previous iteration or start */
+ b = *prev_row++;
+
+ p = b - c;
+ pc = a - c;
+
+# ifdef PNG_USE_ABS
+ pa = abs(p);
+ pb = abs(pc);
+ pc = abs(p + pc);
+# else
+ pa = p < 0 ? -p : p;
+ pb = pc < 0 ? -pc : pc;
+ pc = (p + pc) < 0 ? -(p + pc) : p + pc;
+# endif
+
+ /* Find the best predictor, the least of pa, pb, pc favoring the earlier
+ * ones in the case of a tie.
+ */
+ if (pb < pa) pa = pb, a = b;
+ if (pc < pa) a = c;
+
+ /* Calculate the current pixel in a, and move the previous row pixel to c
+ * for the next time round the loop
+ */
+ c = b;
+ a += *row;
+ *row++ = (png_byte)a;
+ }
+}
+
+static void
+png_read_filter_row_paeth_multibyte_pixel(png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row)
+{
+ int bpp = (row_info->pixel_depth + 7) >> 3;
+ png_bytep rp_end = row + bpp;
+
+ /* Process the first pixel in the row completely (this is the same as 'up'
+ * because there is only one candidate predictor for the first row).
+ */
+ while (row < rp_end)
+ {
+ int a = *row + *prev_row++;
+ *row++ = (png_byte)a;
+ }
+
+ /* Remainder */
+ rp_end += row_info->rowbytes - bpp;
+
+ while (row < rp_end)
+ {
+ int a, b, c, pa, pb, pc, p;
+
+ c = *(prev_row - bpp);
+ a = *(row - bpp);
+ b = *prev_row++;
+
+ p = b - c;
+ pc = a - c;
+
+# ifdef PNG_USE_ABS
+ pa = abs(p);
+ pb = abs(pc);
+ pc = abs(p + pc);
+# else
+ pa = p < 0 ? -p : p;
+ pb = pc < 0 ? -pc : pc;
+ pc = (p + pc) < 0 ? -(p + pc) : p + pc;
+# endif
+
+ if (pb < pa) pa = pb, a = b;
+ if (pc < pa) a = c;
+
+ c = b;
+ a += *row;
+ *row++ = (png_byte)a;
+ }
+}
+
+#ifdef PNG_ARM_NEON
+
+#ifdef __linux__
+#include <stdio.h>
+#include <elf.h>
+#include <asm/hwcap.h>
+
+static int png_have_hwcap(unsigned cap)
+{
+ FILE *f = fopen("/proc/self/auxv", "r");
+ Elf32_auxv_t aux;
+ int have_cap = 0;
+
+ if (!f)
+ return 0;
+
+ while (fread(&aux, sizeof(aux), 1, f) > 0)
+ {
+ if (aux.a_type == AT_HWCAP &&
+ aux.a_un.a_val & cap)
+ {
+ have_cap = 1;
break;
}
- case PNG_FILTER_VALUE_UP:
- {
- png_uint_32 i;
- png_uint_32 istop = row_info->rowbytes;
- png_bytep rp = row;
- png_bytep pp = prev_row;
+ }
- for (i = 0; i < istop; i++)
- {
- *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
- rp++;
- }
- break;
- }
- case PNG_FILTER_VALUE_AVG:
- {
- png_uint_32 i;
- png_bytep rp = row;
- png_bytep pp = prev_row;
- png_bytep lp = row;
- png_uint_32 bpp = (row_info->pixel_depth + 7) >> 3;
- png_uint_32 istop = row_info->rowbytes - bpp;
+ fclose(f);
- for (i = 0; i < bpp; i++)
- {
- *rp = (png_byte)(((int)(*rp) +
- ((int)(*pp++) / 2 )) & 0xff);
- rp++;
- }
+ return have_cap;
+}
+#endif /* __linux__ */
- for (i = 0; i < istop; i++)
- {
- *rp = (png_byte)(((int)(*rp) +
- (int)(*pp++ + *lp++) / 2 ) & 0xff);
- rp++;
- }
- break;
- }
- case PNG_FILTER_VALUE_PAETH:
- {
- png_uint_32 i;
- png_bytep rp = row;
- png_bytep pp = prev_row;
- png_bytep lp = row;
- png_bytep cp = prev_row;
- png_uint_32 bpp = (row_info->pixel_depth + 7) >> 3;
- png_uint_32 istop=row_info->rowbytes - bpp;
-
- for (i = 0; i < bpp; i++)
- {
- *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
- rp++;
- }
-
- for (i = 0; i < istop; i++) /* Use leftover rp,pp */
- {
- int a, b, c, pa, pb, pc, p;
-
- a = *lp++;
- b = *pp++;
- c = *cp++;
-
- p = b - c;
- pc = a - c;
-
-#ifdef PNG_USE_ABS
- pa = abs(p);
- pb = abs(pc);
- pc = abs(p + pc);
-#else
- pa = p < 0 ? -p : p;
- pb = pc < 0 ? -pc : pc;
- pc = (p + pc) < 0 ? -(p + pc) : p + pc;
+static void
+png_init_filter_functions_neon(png_structp pp, unsigned int bpp)
+{
+#ifdef __linux__
+ if (!png_have_hwcap(HWCAP_NEON))
+ return;
#endif
- /*
- if (pa <= pb && pa <= pc)
- p = a;
- else if (pb <= pc)
- p = b;
- else
- p = c;
- */
+ pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_neon;
- p = (pa <= pb && pa <= pc) ? a : (pb <= pc) ? b : c;
-
- *rp = (png_byte)(((int)(*rp) + p) & 0xff);
- rp++;
- }
- break;
- }
- default:
- png_warning(png_ptr, "Ignoring bad adaptive filter type");
- *row = 0;
- break;
+ if (bpp == 3)
+ {
+ pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_neon;
+ pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_neon;
+ pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+ png_read_filter_row_paeth3_neon;
}
+
+ else if (bpp == 4)
+ {
+ pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_neon;
+ pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_neon;
+ pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+ png_read_filter_row_paeth4_neon;
+ }
+}
+#endif /* PNG_ARM_NEON */
+
+static void
+png_init_filter_functions(png_structp pp)
+{
+ unsigned int bpp = (pp->pixel_depth + 7) >> 3;
+
+ pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub;
+ pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up;
+ pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg;
+ if (bpp == 1)
+ pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+ png_read_filter_row_paeth_1byte_pixel;
+ else
+ pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+ png_read_filter_row_paeth_multibyte_pixel;
+
+#ifdef PNG_ARM_NEON
+ png_init_filter_functions_neon(pp, bpp);
+#endif
+}
+
+void /* PRIVATE */
+png_read_filter_row(png_structp pp, png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row, int filter)
+{
+ if (pp->read_filter[0] == NULL)
+ png_init_filter_functions(pp);
+ if (filter > PNG_FILTER_VALUE_NONE && filter < PNG_FILTER_VALUE_LAST)
+ pp->read_filter[filter-1](row_info, row, prev_row);
}
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
@@ -3104,16 +3755,16 @@
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- PNG_CONST int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+ static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
- PNG_CONST int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+ static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
- PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+ static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif /* PNG_READ_INTERLACING_SUPPORTED */
png_debug(1, "in png_read_finish_row");
@@ -3125,13 +3776,19 @@
if (png_ptr->interlaced)
{
png_ptr->row_number = 0;
- png_memset(png_ptr->prev_row, 0,
- png_ptr->rowbytes + 1);
+
+ /* TO DO: don't do this if prev_row isn't needed (requires
+ * read-ahead of the next row's filter byte.
+ */
+ png_memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
+
do
{
png_ptr->pass++;
+
if (png_ptr->pass >= 7)
break;
+
png_ptr->iwidth = (png_ptr->width +
png_pass_inc[png_ptr->pass] - 1 -
png_pass_start[png_ptr->pass]) /
@@ -3140,15 +3797,15 @@
if (!(png_ptr->transformations & PNG_INTERLACE))
{
png_ptr->num_rows = (png_ptr->height +
- png_pass_yinc[png_ptr->pass] - 1 -
- png_pass_ystart[png_ptr->pass]) /
- png_pass_yinc[png_ptr->pass];
- if (!(png_ptr->num_rows))
- continue;
+ png_pass_yinc[png_ptr->pass] - 1 -
+ png_pass_ystart[png_ptr->pass]) /
+ png_pass_yinc[png_ptr->pass];
}
+
else /* if (png_ptr->transformations & PNG_INTERLACE) */
- break;
- } while (png_ptr->iwidth == 0);
+ break; /* libpng deinterlacing sees every row */
+
+ } while (png_ptr->num_rows == 0 || png_ptr->iwidth == 0);
if (png_ptr->pass < 7)
return;
@@ -3157,12 +3814,12 @@
if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
{
- PNG_IDAT;
char extra;
int ret;
png_ptr->zstream.next_out = (Byte *)&extra;
png_ptr->zstream.avail_out = (uInt)1;
+
for (;;)
{
if (!(png_ptr->zstream.avail_in))
@@ -3171,29 +3828,36 @@
{
png_crc_finish(png_ptr, 0);
png_ptr->idat_size = png_read_chunk_header(png_ptr);
- if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ if (png_ptr->chunk_name != png_IDAT)
png_error(png_ptr, "Not enough image data");
}
+
png_ptr->zstream.avail_in = (uInt)png_ptr->zbuf_size;
png_ptr->zstream.next_in = png_ptr->zbuf;
+
if (png_ptr->zbuf_size > png_ptr->idat_size)
png_ptr->zstream.avail_in = (uInt)png_ptr->idat_size;
+
png_crc_read(png_ptr, png_ptr->zbuf, png_ptr->zstream.avail_in);
png_ptr->idat_size -= png_ptr->zstream.avail_in;
}
+
ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
+
if (ret == Z_STREAM_END)
{
if (!(png_ptr->zstream.avail_out) || png_ptr->zstream.avail_in ||
- png_ptr->idat_size)
+ png_ptr->idat_size)
png_warning(png_ptr, "Extra compressed data");
+
png_ptr->mode |= PNG_AFTER_IDAT;
png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
break;
}
+
if (ret != Z_OK)
png_error(png_ptr, png_ptr->zstream.msg ? png_ptr->zstream.msg :
- "Decompression Error");
+ "Decompression Error");
if (!(png_ptr->zstream.avail_out))
{
@@ -3223,16 +3887,16 @@
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- PNG_CONST int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+ static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
- PNG_CONST int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+ static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
- PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+ static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
int max_pixel_depth;
@@ -3240,29 +3904,44 @@
png_debug(1, "in png_read_start_row");
png_ptr->zstream.avail_in = 0;
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
png_init_read_transformations(png_ptr);
+#endif
#ifdef PNG_READ_INTERLACING_SUPPORTED
if (png_ptr->interlaced)
{
if (!(png_ptr->transformations & PNG_INTERLACE))
png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 -
- png_pass_ystart[0]) / png_pass_yinc[0];
+ png_pass_ystart[0]) / png_pass_yinc[0];
+
else
png_ptr->num_rows = png_ptr->height;
png_ptr->iwidth = (png_ptr->width +
- png_pass_inc[png_ptr->pass] - 1 -
- png_pass_start[png_ptr->pass]) /
- png_pass_inc[png_ptr->pass];
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
}
+
else
#endif /* PNG_READ_INTERLACING_SUPPORTED */
{
png_ptr->num_rows = png_ptr->height;
png_ptr->iwidth = png_ptr->width;
}
+
max_pixel_depth = png_ptr->pixel_depth;
+ /* WARNING: * png_read_transform_info (pngrtran.c) performs a simpliar set of
+ * calculations to calculate the final pixel depth, then
+ * png_do_read_transforms actually does the transforms. This means that the
+ * code which effectively calculates this value is actually repeated in three
+ * separate places. They must all match. Innocent changes to the order of
+ * transformations can and will break libpng in a way that causes memory
+ * overwrites.
+ *
+ * TODO: fix this.
+ */
#ifdef PNG_READ_PACK_SUPPORTED
if ((png_ptr->transformations & PNG_PACK) && png_ptr->bit_depth < 8)
max_pixel_depth = 8;
@@ -3275,16 +3954,20 @@
{
if (png_ptr->num_trans)
max_pixel_depth = 32;
+
else
max_pixel_depth = 24;
}
+
else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
{
if (max_pixel_depth < 8)
max_pixel_depth = 8;
+
if (png_ptr->num_trans)
max_pixel_depth *= 2;
}
+
else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
{
if (png_ptr->num_trans)
@@ -3296,22 +3979,42 @@
}
#endif
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+ if (png_ptr->transformations & PNG_EXPAND_16)
+ {
+# ifdef PNG_READ_EXPAND_SUPPORTED
+ /* In fact it is an error if it isn't supported, but checking is
+ * the safe way.
+ */
+ if (png_ptr->transformations & PNG_EXPAND)
+ {
+ if (png_ptr->bit_depth < 16)
+ max_pixel_depth *= 2;
+ }
+ else
+# endif
+ png_ptr->transformations &= ~PNG_EXPAND_16;
+ }
+#endif
+
#ifdef PNG_READ_FILLER_SUPPORTED
if (png_ptr->transformations & (PNG_FILLER))
{
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- max_pixel_depth = 32;
- else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
+ if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
{
if (max_pixel_depth <= 8)
max_pixel_depth = 16;
+
else
max_pixel_depth = 32;
}
- else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB ||
+ png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (max_pixel_depth <= 32)
max_pixel_depth = 32;
+
else
max_pixel_depth = 64;
}
@@ -3323,29 +4026,34 @@
{
if (
#ifdef PNG_READ_EXPAND_SUPPORTED
- (png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND)) ||
+ (png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND)) ||
#endif
#ifdef PNG_READ_FILLER_SUPPORTED
- (png_ptr->transformations & (PNG_FILLER)) ||
+ (png_ptr->transformations & (PNG_FILLER)) ||
#endif
- png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
{
if (max_pixel_depth <= 16)
max_pixel_depth = 32;
+
else
max_pixel_depth = 64;
}
+
else
{
if (max_pixel_depth <= 8)
- {
- if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
max_pixel_depth = 32;
- else
+
+ else
max_pixel_depth = 24;
- }
+ }
+
else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
max_pixel_depth = 64;
+
else
max_pixel_depth = 48;
}
@@ -3355,14 +4063,21 @@
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) && \
defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
if (png_ptr->transformations & PNG_USER_TRANSFORM)
- {
- int user_pixel_depth = png_ptr->user_transform_depth*
+ {
+ int user_pixel_depth = png_ptr->user_transform_depth *
png_ptr->user_transform_channels;
- if (user_pixel_depth > max_pixel_depth)
- max_pixel_depth=user_pixel_depth;
- }
+
+ if (user_pixel_depth > max_pixel_depth)
+ max_pixel_depth = user_pixel_depth;
+ }
#endif
+ /* This value is stored in png_struct and double checked in the row read
+ * code.
+ */
+ png_ptr->maximum_pixel_depth = (png_byte)max_pixel_depth;
+ png_ptr->transformed_pixel_depth = 0; /* calculated on demand */
+
/* Align the width on the next larger 8 pixels. Mainly used
* for interlacing
*/
@@ -3371,7 +4086,8 @@
* for safety's sake
*/
row_bytes = PNG_ROWBYTES(max_pixel_depth, row_bytes) +
- 1 + ((max_pixel_depth + 7) >> 3);
+ 1 + ((max_pixel_depth + 7) >> 3);
+
#ifdef PNG_MAX_MALLOC_64K
if (row_bytes > (png_uint_32)65536L)
png_error(png_ptr, "This image requires a row greater than 64KB");
@@ -3380,49 +4096,57 @@
if (row_bytes + 48 > png_ptr->old_big_row_buf_size)
{
png_free(png_ptr, png_ptr->big_row_buf);
+ png_free(png_ptr, png_ptr->big_prev_row);
+
if (png_ptr->interlaced)
png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr,
row_bytes + 48);
+
else
- png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr,
- row_bytes + 48);
- png_ptr->old_big_row_buf_size = row_bytes + 48;
+ png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
+
+ png_ptr->big_prev_row = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
#ifdef PNG_ALIGNED_MEMORY_SUPPORTED
/* Use 16-byte aligned memory for row_buf with at least 16 bytes
- * of padding before and after row_buf.
+ * of padding before and after row_buf; treat prev_row similarly.
+ * NOTE: the alignment is to the start of the pixels, one beyond the start
+ * of the buffer, because of the filter byte. Prior to libpng 1.5.6 this
+ * was incorrect; the filter byte was aligned, which had the exact
+ * opposite effect of that intended.
*/
- png_ptr->row_buf = png_ptr->big_row_buf + 32
- - (((png_alloc_size_t)&(png_ptr->big_row_buf[0]) + 15) % 16);
- png_ptr->old_big_row_buf_size = row_bytes + 48;
+ {
+ png_bytep temp = png_ptr->big_row_buf + 32;
+ int extra = (int)((temp - (png_bytep)0) & 0x0f);
+ png_ptr->row_buf = temp - extra - 1/*filter byte*/;
+
+ temp = png_ptr->big_prev_row + 32;
+ extra = (int)((temp - (png_bytep)0) & 0x0f);
+ png_ptr->prev_row = temp - extra - 1/*filter byte*/;
+ }
+
#else
- /* Use 32 bytes of padding before and 16 bytes after row_buf. */
- png_ptr->row_buf = png_ptr->big_row_buf + 32;
+ /* Use 31 bytes of padding before and 17 bytes after row_buf. */
+ png_ptr->row_buf = png_ptr->big_row_buf + 31;
+ png_ptr->prev_row = png_ptr->big_prev_row + 31;
#endif
png_ptr->old_big_row_buf_size = row_bytes + 48;
}
#ifdef PNG_MAX_MALLOC_64K
- if ((png_uint_32)png_ptr->rowbytes + 1 > (png_uint_32)65536L)
+ if (png_ptr->rowbytes > 65535)
png_error(png_ptr, "This image requires a row greater than 64KB");
-#endif
- if ((png_uint_32)png_ptr->rowbytes > (png_uint_32)(PNG_SIZE_MAX - 1))
- png_error(png_ptr, "Row has too many bytes to allocate in memory");
- if (png_ptr->rowbytes + 1 > png_ptr->old_prev_row_size)
- {
- png_free(png_ptr, png_ptr->prev_row);
- png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
- png_ptr->rowbytes + 1));
- png_ptr->old_prev_row_size = png_ptr->rowbytes + 1;
- }
+#endif
+ if (png_ptr->rowbytes > (PNG_SIZE_MAX - 1))
+ png_error(png_ptr, "Row has too many bytes to allocate in memory");
png_memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
- png_debug1(3, "width = %lu,", (unsigned long)png_ptr->width);
- png_debug1(3, "height = %lu,", (unsigned long)png_ptr->height);
- png_debug1(3, "iwidth = %lu,", (unsigned long)png_ptr->iwidth);
- png_debug1(3, "num_rows = %lu,", (unsigned long)png_ptr->num_rows);
+ png_debug1(3, "width = %u,", png_ptr->width);
+ png_debug1(3, "height = %u,", png_ptr->height);
+ png_debug1(3, "iwidth = %u,", png_ptr->iwidth);
+ png_debug1(3, "num_rows = %u,", png_ptr->num_rows);
png_debug1(3, "rowbytes = %lu,", (unsigned long)png_ptr->rowbytes);
png_debug1(3, "irowbytes = %lu",
(unsigned long)PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1);
diff --git a/pngset.c b/pngset.c
index d568c53..92db389 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
- * Last changed in libpng 1.4.6 [January 14, 2011]
+ * Last changed in libpng 1.5.7 [December 15, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -16,14 +16,14 @@
* info struct and allows us to change the structure in the future.
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
#ifdef PNG_bKGD_SUPPORTED
void PNGAPI
-png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background)
+png_set_bKGD(png_structp png_ptr, png_infop info_ptr,
+ png_const_color_16p background)
{
png_debug1(1, "in %s storage function", "bKGD");
@@ -36,150 +36,145 @@
#endif
#ifdef PNG_cHRM_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
- double white_x, double white_y, double red_x, double red_y,
- double green_x, double green_y, double blue_x, double blue_y)
-{
- png_debug1(1, "in %s storage function", "cHRM");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- info_ptr->x_white = (float)white_x;
- info_ptr->y_white = (float)white_y;
- info_ptr->x_red = (float)red_x;
- info_ptr->y_red = (float)red_y;
- info_ptr->x_green = (float)green_x;
- info_ptr->y_green = (float)green_y;
- info_ptr->x_blue = (float)blue_x;
- info_ptr->y_blue = (float)blue_y;
-#ifdef PNG_FIXED_POINT_SUPPORTED
- info_ptr->int_x_white = (png_fixed_point)(white_x*100000.+0.5);
- info_ptr->int_y_white = (png_fixed_point)(white_y*100000.+0.5);
- info_ptr->int_x_red = (png_fixed_point)( red_x*100000.+0.5);
- info_ptr->int_y_red = (png_fixed_point)( red_y*100000.+0.5);
- info_ptr->int_x_green = (png_fixed_point)(green_x*100000.+0.5);
- info_ptr->int_y_green = (png_fixed_point)(green_y*100000.+0.5);
- info_ptr->int_x_blue = (png_fixed_point)( blue_x*100000.+0.5);
- info_ptr->int_y_blue = (png_fixed_point)( blue_y*100000.+0.5);
-#endif
- info_ptr->valid |= PNG_INFO_cHRM;
-}
-#endif /* PNG_FLOATING_POINT_SUPPORTED */
-
-#ifdef PNG_FIXED_POINT_SUPPORTED
-void PNGAPI
+void PNGFAPI
png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
- png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
- png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
- png_fixed_point blue_x, png_fixed_point blue_y)
+ png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
+ png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
+ png_fixed_point blue_x, png_fixed_point blue_y)
{
png_debug1(1, "in %s storage function", "cHRM fixed");
if (png_ptr == NULL || info_ptr == NULL)
return;
-#ifdef PNG_CHECK_cHRM_SUPPORTED
+# ifdef PNG_CHECK_cHRM_SUPPORTED
if (png_check_cHRM_fixed(png_ptr,
- white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y))
-#endif
+ white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y))
+# endif
{
- info_ptr->int_x_white = white_x;
- info_ptr->int_y_white = white_y;
- info_ptr->int_x_red = red_x;
- info_ptr->int_y_red = red_y;
- info_ptr->int_x_green = green_x;
- info_ptr->int_y_green = green_y;
- info_ptr->int_x_blue = blue_x;
- info_ptr->int_y_blue = blue_y;
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- info_ptr->x_white = (float)(white_x/100000.);
- info_ptr->y_white = (float)(white_y/100000.);
- info_ptr->x_red = (float)( red_x/100000.);
- info_ptr->y_red = (float)( red_y/100000.);
- info_ptr->x_green = (float)(green_x/100000.);
- info_ptr->y_green = (float)(green_y/100000.);
- info_ptr->x_blue = (float)( blue_x/100000.);
- info_ptr->y_blue = (float)( blue_y/100000.);
-#endif
+ info_ptr->x_white = white_x;
+ info_ptr->y_white = white_y;
+ info_ptr->x_red = red_x;
+ info_ptr->y_red = red_y;
+ info_ptr->x_green = green_x;
+ info_ptr->y_green = green_y;
+ info_ptr->x_blue = blue_x;
+ info_ptr->y_blue = blue_y;
info_ptr->valid |= PNG_INFO_cHRM;
}
}
-#endif /* PNG_FIXED_POINT_SUPPORTED */
+
+void PNGFAPI
+png_set_cHRM_XYZ_fixed(png_structp png_ptr, png_infop info_ptr,
+ png_fixed_point int_red_X, png_fixed_point int_red_Y,
+ png_fixed_point int_red_Z, png_fixed_point int_green_X,
+ png_fixed_point int_green_Y, png_fixed_point int_green_Z,
+ png_fixed_point int_blue_X, png_fixed_point int_blue_Y,
+ png_fixed_point int_blue_Z)
+{
+ png_XYZ XYZ;
+ png_xy xy;
+
+ png_debug1(1, "in %s storage function", "cHRM XYZ fixed");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ XYZ.redX = int_red_X;
+ XYZ.redY = int_red_Y;
+ XYZ.redZ = int_red_Z;
+ XYZ.greenX = int_green_X;
+ XYZ.greenY = int_green_Y;
+ XYZ.greenZ = int_green_Z;
+ XYZ.blueX = int_blue_X;
+ XYZ.blueY = int_blue_Y;
+ XYZ.blueZ = int_blue_Z;
+
+ if (png_xy_from_XYZ(&xy, XYZ))
+ png_error(png_ptr, "XYZ values out of representable range");
+
+ png_set_cHRM_fixed(png_ptr, info_ptr, xy.whitex, xy.whitey, xy.redx, xy.redy,
+ xy.greenx, xy.greeny, xy.bluex, xy.bluey);
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
+ double white_x, double white_y, double red_x, double red_y,
+ double green_x, double green_y, double blue_x, double blue_y)
+{
+ png_set_cHRM_fixed(png_ptr, info_ptr,
+ png_fixed(png_ptr, white_x, "cHRM White X"),
+ png_fixed(png_ptr, white_y, "cHRM White Y"),
+ png_fixed(png_ptr, red_x, "cHRM Red X"),
+ png_fixed(png_ptr, red_y, "cHRM Red Y"),
+ png_fixed(png_ptr, green_x, "cHRM Green X"),
+ png_fixed(png_ptr, green_y, "cHRM Green Y"),
+ png_fixed(png_ptr, blue_x, "cHRM Blue X"),
+ png_fixed(png_ptr, blue_y, "cHRM Blue Y"));
+}
+
+void PNGAPI
+png_set_cHRM_XYZ(png_structp png_ptr, png_infop info_ptr, double red_X,
+ double red_Y, double red_Z, double green_X, double green_Y, double green_Z,
+ double blue_X, double blue_Y, double blue_Z)
+{
+ png_set_cHRM_XYZ_fixed(png_ptr, info_ptr,
+ png_fixed(png_ptr, red_X, "cHRM Red X"),
+ png_fixed(png_ptr, red_Y, "cHRM Red Y"),
+ png_fixed(png_ptr, red_Z, "cHRM Red Z"),
+ png_fixed(png_ptr, green_X, "cHRM Red X"),
+ png_fixed(png_ptr, green_Y, "cHRM Red Y"),
+ png_fixed(png_ptr, green_Z, "cHRM Red Z"),
+ png_fixed(png_ptr, blue_X, "cHRM Red X"),
+ png_fixed(png_ptr, blue_Y, "cHRM Red Y"),
+ png_fixed(png_ptr, blue_Z, "cHRM Red Z"));
+}
+# endif /* PNG_FLOATING_POINT_SUPPORTED */
+
#endif /* PNG_cHRM_SUPPORTED */
#ifdef PNG_gAMA_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGFAPI
+png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
+ file_gamma)
+{
+ png_debug1(1, "in %s storage function", "gAMA");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ /* Changed in libpng-1.5.4 to limit the values to ensure overflow can't
+ * occur. Since the fixed point representation is assymetrical it is
+ * possible for 1/gamma to overflow the limit of 21474 and this means the
+ * gamma value must be at least 5/100000 and hence at most 20000.0. For
+ * safety the limits here are a little narrower. The values are 0.00016 to
+ * 6250.0, which are truly ridiculous gammma values (and will produce
+ * displays that are all black or all white.)
+ */
+ if (file_gamma < 16 || file_gamma > 625000000)
+ png_warning(png_ptr, "Out of range gamma value ignored");
+
+ else
+ {
+ info_ptr->gamma = file_gamma;
+ info_ptr->valid |= PNG_INFO_gAMA;
+ }
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
void PNGAPI
png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
{
- double png_gamma;
-
- png_debug1(1, "in %s storage function", "gAMA");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- /* Check for overflow */
- if (file_gamma > 21474.83)
- {
- png_warning(png_ptr, "Limiting gamma to 21474.83");
- png_gamma=21474.83;
- }
- else
- png_gamma = file_gamma;
- info_ptr->gamma = (float)png_gamma;
-#ifdef PNG_FIXED_POINT_SUPPORTED
- info_ptr->int_gamma = (int)(png_gamma*100000.+.5);
-#endif
- info_ptr->valid |= PNG_INFO_gAMA;
- if (png_gamma == 0.0)
- png_warning(png_ptr, "Setting gamma=0");
+ png_set_gAMA_fixed(png_ptr, info_ptr, png_fixed(png_ptr, file_gamma,
+ "png_set_gAMA"));
}
-#endif
-void PNGAPI
-png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
- int_gamma)
-{
- png_fixed_point png_gamma;
-
- png_debug1(1, "in %s storage function", "gAMA");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- if (int_gamma > (png_fixed_point)PNG_UINT_31_MAX)
- {
- png_warning(png_ptr, "Limiting gamma to 21474.83");
- png_gamma=PNG_UINT_31_MAX;
- }
- else
- {
- if (int_gamma < 0)
- {
- png_warning(png_ptr, "Setting negative gamma to zero");
- png_gamma = 0;
- }
- else
- png_gamma = int_gamma;
- }
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- info_ptr->gamma = (float)(png_gamma/100000.);
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
- info_ptr->int_gamma = png_gamma;
-#endif
- info_ptr->valid |= PNG_INFO_gAMA;
- if (png_gamma == 0)
- png_warning(png_ptr, "Setting gamma=0");
-}
+# endif
#endif
#ifdef PNG_hIST_SUPPORTED
void PNGAPI
-png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
+png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_const_uint_16p hist)
{
int i;
@@ -192,16 +187,19 @@
> PNG_MAX_PALETTE_LENGTH)
{
png_warning(png_ptr,
- "Invalid palette size, hIST allocation skipped");
+ "Invalid palette size, hIST allocation skipped");
+
return;
}
png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
+
/* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in
* version 1.2.1
*/
png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr,
- PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16));
+ PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16));
+
if (png_ptr->hist == NULL)
{
png_warning(png_ptr, "Insufficient memory for hIST chunk data");
@@ -210,18 +208,18 @@
for (i = 0; i < info_ptr->num_palette; i++)
png_ptr->hist[i] = hist[i];
+
info_ptr->hist = png_ptr->hist;
info_ptr->valid |= PNG_INFO_hIST;
-
info_ptr->free_me |= PNG_FREE_HIST;
}
#endif
void PNGAPI
png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
- png_uint_32 width, png_uint_32 height, int bit_depth,
- int color_type, int interlace_type, int compression_type,
- int filter_type)
+ png_uint_32 width, png_uint_32 height, int bit_depth,
+ int color_type, int interlace_type, int compression_type,
+ int filter_type)
{
png_debug1(1, "in %s storage function", "IHDR");
@@ -242,21 +240,25 @@
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
info_ptr->channels = 1;
+
else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
info_ptr->channels = 3;
+
else
info_ptr->channels = 1;
+
if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
info_ptr->channels++;
+
info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
/* Check for potential overflow */
- if (width > (PNG_UINT_32_MAX
- >> 3) /* 8-byte RGBA pixels */
- - 64 /* bigrowbuf hack */
- - 1 /* filter byte */
- - 7*8 /* rounding of width to multiple of 8 pixels */
- - 8) /* extra max_pixel_depth pad */
+ if (width >
+ (PNG_UINT_32_MAX >> 3) /* 8-byte RRGGBBAA pixels */
+ - 48 /* bigrowbuf hack */
+ - 1 /* filter byte */
+ - 7*8 /* rounding of width to multiple of 8 pixels */
+ - 8) /* extra max_pixel_depth pad */
info_ptr->rowbytes = 0;
else
info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
@@ -265,7 +267,7 @@
#ifdef PNG_oFFs_SUPPORTED
void PNGAPI
png_set_oFFs(png_structp png_ptr, png_infop info_ptr,
- png_int_32 offset_x, png_int_32 offset_y, int unit_type)
+ png_int_32 offset_x, png_int_32 offset_y, int unit_type)
{
png_debug1(1, "in %s storage function", "oFFs");
@@ -282,8 +284,8 @@
#ifdef PNG_pCAL_SUPPORTED
void PNGAPI
png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
- png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams,
- png_charp units, png_charpp params)
+ png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type,
+ int nparams, png_const_charp units, png_charpp params)
{
png_size_t length;
int i;
@@ -295,13 +297,27 @@
length = png_strlen(purpose) + 1;
png_debug1(3, "allocating purpose for info (%lu bytes)",
- (unsigned long)length);
+ (unsigned long)length);
+
+ /* TODO: validate format of calibration name and unit name */
+
+ /* Check that the type matches the specification. */
+ if (type < 0 || type > 3)
+ png_error(png_ptr, "Invalid pCAL equation type");
+
+ /* Validate params[nparams] */
+ for (i=0; i<nparams; ++i)
+ if (!png_check_fp_string(params[i], png_strlen(params[i])))
+ png_error(png_ptr, "Invalid format for pCAL parameter");
+
info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length);
+
if (info_ptr->pcal_purpose == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL purpose");
return;
}
+
png_memcpy(info_ptr->pcal_purpose, purpose, length);
png_debug(3, "storing X0, X1, type, and nparams in info");
@@ -313,16 +329,20 @@
length = png_strlen(units) + 1;
png_debug1(3, "allocating units for info (%lu bytes)",
(unsigned long)length);
+
info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length);
+
if (info_ptr->pcal_units == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL units");
return;
}
+
png_memcpy(info_ptr->pcal_units, units, length);
info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr,
- (png_size_t)((nparams + 1) * png_sizeof(png_charp)));
+ (png_size_t)((nparams + 1) * png_sizeof(png_charp)));
+
if (info_ptr->pcal_params == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL params");
@@ -335,13 +355,16 @@
{
length = png_strlen(params[i]) + 1;
png_debug2(3, "allocating parameter %d for info (%lu bytes)", i,
- (unsigned long)length);
+ (unsigned long)length);
+
info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length);
+
if (info_ptr->pcal_params[i] == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL parameter");
return;
}
+
png_memcpy(info_ptr->pcal_params[i], params[i], length);
}
@@ -350,74 +373,132 @@
}
#endif
-#if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED)
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_sCAL(png_structp png_ptr, png_infop info_ptr,
- int unit, double width, double height)
-{
- png_debug1(1, "in %s storage function", "sCAL");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- info_ptr->scal_unit = (png_byte)unit;
- info_ptr->scal_pixel_width = width;
- info_ptr->scal_pixel_height = height;
-
- info_ptr->valid |= PNG_INFO_sCAL;
-}
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
+#ifdef PNG_sCAL_SUPPORTED
void PNGAPI
png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
- int unit, png_charp swidth, png_charp sheight)
+ int unit, png_const_charp swidth, png_const_charp sheight)
{
- png_size_t length;
+ png_size_t lengthw = 0, lengthh = 0;
png_debug1(1, "in %s storage function", "sCAL");
if (png_ptr == NULL || info_ptr == NULL)
return;
+ /* Double check the unit (should never get here with an invalid
+ * unit unless this is an API call.)
+ */
+ if (unit != 1 && unit != 2)
+ png_error(png_ptr, "Invalid sCAL unit");
+
+ if (swidth == NULL || (lengthw = png_strlen(swidth)) == 0 ||
+ swidth[0] == 45 /* '-' */ || !png_check_fp_string(swidth, lengthw))
+ png_error(png_ptr, "Invalid sCAL width");
+
+ if (sheight == NULL || (lengthh = png_strlen(sheight)) == 0 ||
+ sheight[0] == 45 /* '-' */ || !png_check_fp_string(sheight, lengthh))
+ png_error(png_ptr, "Invalid sCAL height");
+
info_ptr->scal_unit = (png_byte)unit;
- length = png_strlen(swidth) + 1;
- png_debug1(3, "allocating unit for info (%u bytes)",
- (unsigned int)length);
- info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, length);
+ ++lengthw;
+
+ png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthw);
+
+ info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, lengthw);
+
if (info_ptr->scal_s_width == NULL)
{
- png_warning(png_ptr,
- "Memory allocation failed while processing sCAL");
+ png_warning(png_ptr, "Memory allocation failed while processing sCAL");
return;
}
- png_memcpy(info_ptr->scal_s_width, swidth, length);
- length = png_strlen(sheight) + 1;
- png_debug1(3, "allocating unit for info (%u bytes)",
- (unsigned int)length);
- info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, length);
+ png_memcpy(info_ptr->scal_s_width, swidth, lengthw);
+
+ ++lengthh;
+
+ png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthh);
+
+ info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, lengthh);
+
if (info_ptr->scal_s_height == NULL)
{
png_free (png_ptr, info_ptr->scal_s_width);
info_ptr->scal_s_width = NULL;
- png_warning(png_ptr,
- "Memory allocation failed while processing sCAL");
+
+ png_warning(png_ptr, "Memory allocation failed while processing sCAL");
return;
}
- png_memcpy(info_ptr->scal_s_height, sheight, length);
+
+ png_memcpy(info_ptr->scal_s_height, sheight, lengthh);
+
info_ptr->valid |= PNG_INFO_sCAL;
info_ptr->free_me |= PNG_FREE_SCAL;
}
-#endif
-#endif
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_sCAL(png_structp png_ptr, png_infop info_ptr, int unit, double width,
+ double height)
+{
+ png_debug1(1, "in %s storage function", "sCAL");
+
+ /* Check the arguments. */
+ if (width <= 0)
+ png_warning(png_ptr, "Invalid sCAL width ignored");
+
+ else if (height <= 0)
+ png_warning(png_ptr, "Invalid sCAL height ignored");
+
+ else
+ {
+ /* Convert 'width' and 'height' to ASCII. */
+ char swidth[PNG_sCAL_MAX_DIGITS+1];
+ char sheight[PNG_sCAL_MAX_DIGITS+1];
+
+ png_ascii_from_fp(png_ptr, swidth, sizeof swidth, width,
+ PNG_sCAL_PRECISION);
+ png_ascii_from_fp(png_ptr, sheight, sizeof sheight, height,
+ PNG_sCAL_PRECISION);
+
+ png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight);
+ }
+}
+# endif
+
+# ifdef PNG_FIXED_POINT_SUPPORTED
+void PNGAPI
+png_set_sCAL_fixed(png_structp png_ptr, png_infop info_ptr, int unit,
+ png_fixed_point width, png_fixed_point height)
+{
+ png_debug1(1, "in %s storage function", "sCAL");
+
+ /* Check the arguments. */
+ if (width <= 0)
+ png_warning(png_ptr, "Invalid sCAL width ignored");
+
+ else if (height <= 0)
+ png_warning(png_ptr, "Invalid sCAL height ignored");
+
+ else
+ {
+ /* Convert 'width' and 'height' to ASCII. */
+ char swidth[PNG_sCAL_MAX_DIGITS+1];
+ char sheight[PNG_sCAL_MAX_DIGITS+1];
+
+ png_ascii_from_fixed(png_ptr, swidth, sizeof swidth, width);
+ png_ascii_from_fixed(png_ptr, sheight, sizeof sheight, height);
+
+ png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight);
+ }
+}
+# endif
#endif
#ifdef PNG_pHYs_SUPPORTED
void PNGAPI
png_set_pHYs(png_structp png_ptr, png_infop info_ptr,
- png_uint_32 res_x, png_uint_32 res_y, int unit_type)
+ png_uint_32 res_x, png_uint_32 res_y, int unit_type)
{
png_debug1(1, "in %s storage function", "pHYs");
@@ -433,7 +514,7 @@
void PNGAPI
png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
- png_colorp palette, int num_palette)
+ png_const_colorp palette, int num_palette)
{
png_debug1(1, "in %s storage function", "PLTE");
@@ -445,6 +526,7 @@
{
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_error(png_ptr, "Invalid palette length");
+
else
{
png_warning(png_ptr, "Invalid palette length");
@@ -463,7 +545,8 @@
* too-large sample values.
*/
png_ptr->palette = (png_colorp)png_calloc(png_ptr,
- PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color));
+ PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color));
+
png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color));
info_ptr->palette = png_ptr->palette;
info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
@@ -476,7 +559,7 @@
#ifdef PNG_sBIT_SUPPORTED
void PNGAPI
png_set_sBIT(png_structp png_ptr, png_infop info_ptr,
- png_color_8p sig_bit)
+ png_const_color_8p sig_bit)
{
png_debug1(1, "in %s storage function", "sBIT");
@@ -490,85 +573,41 @@
#ifdef PNG_sRGB_SUPPORTED
void PNGAPI
-png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent)
+png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int srgb_intent)
{
png_debug1(1, "in %s storage function", "sRGB");
if (png_ptr == NULL || info_ptr == NULL)
return;
- info_ptr->srgb_intent = (png_byte)intent;
+ info_ptr->srgb_intent = (png_byte)srgb_intent;
info_ptr->valid |= PNG_INFO_sRGB;
}
void PNGAPI
png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
- int intent)
+ int srgb_intent)
{
-#ifdef PNG_gAMA_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- float file_gamma;
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
- png_fixed_point int_file_gamma;
-#endif
-#endif
-#ifdef PNG_cHRM_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
-#endif
- png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
- int_green_y, int_blue_x, int_blue_y;
-#endif
png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM");
if (png_ptr == NULL || info_ptr == NULL)
return;
- png_set_sRGB(png_ptr, info_ptr, intent);
+ png_set_sRGB(png_ptr, info_ptr, srgb_intent);
-#ifdef PNG_gAMA_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- file_gamma = (float).45455;
- png_set_gAMA(png_ptr, info_ptr, file_gamma);
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
- int_file_gamma = 45455L;
- png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma);
-#endif
-#endif
+# ifdef PNG_gAMA_SUPPORTED
+ png_set_gAMA_fixed(png_ptr, info_ptr, PNG_GAMMA_sRGB_INVERSE);
+# endif
-#ifdef PNG_cHRM_SUPPORTED
- int_white_x = 31270L;
- int_white_y = 32900L;
- int_red_x = 64000L;
- int_red_y = 33000L;
- int_green_x = 30000L;
- int_green_y = 60000L;
- int_blue_x = 15000L;
- int_blue_y = 6000L;
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- white_x = (float).3127;
- white_y = (float).3290;
- red_x = (float).64;
- red_y = (float).33;
- green_x = (float).30;
- green_y = (float).60;
- blue_x = (float).15;
- blue_y = (float).06;
-#endif
-
-#ifdef PNG_FIXED_POINT_SUPPORTED
+# ifdef PNG_cHRM_SUPPORTED
png_set_cHRM_fixed(png_ptr, info_ptr,
- int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
- int_green_y, int_blue_x, int_blue_y);
-#endif
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- png_set_cHRM(png_ptr, info_ptr,
- white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
-#endif
-#endif /* cHRM */
+ /* color x y */
+ /* white */ 31270, 32900,
+ /* red */ 64000, 33000,
+ /* green */ 30000, 60000,
+ /* blue */ 15000, 6000
+ );
+# endif /* cHRM */
}
#endif /* sRGB */
@@ -576,12 +615,12 @@
#ifdef PNG_iCCP_SUPPORTED
void PNGAPI
png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
- png_charp name, int compression_type,
- png_charp profile, png_uint_32 proflen)
+ png_const_charp name, int compression_type,
+ png_const_bytep profile, png_uint_32 proflen)
{
png_charp new_iccp_name;
- png_charp new_iccp_profile;
- png_uint_32 length;
+ png_bytep new_iccp_profile;
+ png_size_t length;
png_debug1(1, "in %s storage function", "iCCP");
@@ -590,13 +629,16 @@
length = png_strlen(name)+1;
new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length);
+
if (new_iccp_name == NULL)
{
png_warning(png_ptr, "Insufficient memory to process iCCP chunk");
return;
}
+
png_memcpy(new_iccp_name, name, length);
- new_iccp_profile = (png_charp)png_malloc_warn(png_ptr, proflen);
+ new_iccp_profile = (png_bytep)png_malloc_warn(png_ptr, proflen);
+
if (new_iccp_profile == NULL)
{
png_free (png_ptr, new_iccp_name);
@@ -604,6 +646,7 @@
"Insufficient memory to process iCCP profile");
return;
}
+
png_memcpy(new_iccp_profile, profile, (png_size_t)proflen);
png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0);
@@ -622,24 +665,24 @@
#ifdef PNG_TEXT_SUPPORTED
void PNGAPI
-png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
- int num_text)
+png_set_text(png_structp png_ptr, png_infop info_ptr, png_const_textp text_ptr,
+ int num_text)
{
int ret;
ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text);
+
if (ret)
png_error(png_ptr, "Insufficient memory to store text");
}
int /* PRIVATE */
-png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
- int num_text)
+png_set_text_2(png_structp png_ptr, png_infop info_ptr,
+ png_const_textp text_ptr, int num_text)
{
int i;
- png_debug1(1, "in %s storage function", ((png_ptr == NULL ||
- png_ptr->chunk_name[0] == '\0') ?
- "text" : (png_const_charp)png_ptr->chunk_name));
+ png_debug1(1, "in %lx storage function", png_ptr == NULL ? "unexpected" :
+ (unsigned long)png_ptr->chunk_name);
if (png_ptr == NULL || info_ptr == NULL || num_text == 0)
return(0);
@@ -659,27 +702,31 @@
old_text = info_ptr->text;
info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
(png_size_t)(info_ptr->max_text * png_sizeof(png_text)));
+
if (info_ptr->text == NULL)
{
png_free(png_ptr, old_text);
return(1);
}
+
png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max *
- png_sizeof(png_text)));
+ png_sizeof(png_text)));
png_free(png_ptr, old_text);
}
+
else
{
info_ptr->max_text = num_text + 8;
info_ptr->num_text = 0;
info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
- (png_size_t)(info_ptr->max_text * png_sizeof(png_text)));
+ (png_size_t)(info_ptr->max_text * png_sizeof(png_text)));
if (info_ptr->text == NULL)
return(1);
info_ptr->free_me |= PNG_FREE_TEXT;
}
+
png_debug1(3, "allocated %d entries for info_ptr->text",
- info_ptr->max_text);
+ info_ptr->max_text);
}
for (i = 0; i < num_text; i++)
{
@@ -706,34 +753,38 @@
}
else
-#ifdef PNG_iTXt_SUPPORTED
+# ifdef PNG_iTXt_SUPPORTED
{
/* Set iTXt data */
if (text_ptr[i].lang != NULL)
lang_len = png_strlen(text_ptr[i].lang);
+
else
lang_len = 0;
+
if (text_ptr[i].lang_key != NULL)
lang_key_len = png_strlen(text_ptr[i].lang_key);
+
else
lang_key_len = 0;
}
-#else /* PNG_iTXt_SUPPORTED */
+# else /* PNG_iTXt_SUPPORTED */
{
png_warning(png_ptr, "iTXt chunk not supported");
continue;
}
-#endif
+# endif
if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0')
{
text_length = 0;
-#ifdef PNG_iTXt_SUPPORTED
+# ifdef PNG_iTXt_SUPPORTED
if (text_ptr[i].compression > 0)
textp->compression = PNG_ITXT_COMPRESSION_NONE;
+
else
-#endif
+# endif
textp->compression = PNG_TEXT_COMPRESSION_NONE;
}
@@ -744,18 +795,20 @@
}
textp->key = (png_charp)png_malloc_warn(png_ptr,
- (png_size_t)
- (key_len + text_length + lang_len + lang_key_len + 4));
+ (png_size_t)
+ (key_len + text_length + lang_len + lang_key_len + 4));
+
if (textp->key == NULL)
return(1);
- png_debug2(2, "Allocated %lu bytes at %x in png_set_text",
- (unsigned long)(png_uint_32)
- (key_len + lang_len + lang_key_len + text_length + 4),
- (int)textp->key);
+
+ png_debug2(2, "Allocated %lu bytes at %p in png_set_text",
+ (unsigned long)(png_uint_32)
+ (key_len + lang_len + lang_key_len + text_length + 4),
+ textp->key);
png_memcpy(textp->key, text_ptr[i].key,(png_size_t)(key_len));
*(textp->key + key_len) = '\0';
-#ifdef PNG_iTXt_SUPPORTED
+
if (text_ptr[i].compression > 0)
{
textp->lang = textp->key + key_len + 1;
@@ -766,35 +819,34 @@
*(textp->lang_key + lang_key_len) = '\0';
textp->text = textp->lang_key + lang_key_len + 1;
}
+
else
-#endif
{
-#ifdef PNG_iTXt_SUPPORTED
textp->lang=NULL;
textp->lang_key=NULL;
-#endif
textp->text = textp->key + key_len + 1;
}
+
if (text_length)
png_memcpy(textp->text, text_ptr[i].text,
- (png_size_t)(text_length));
+ (png_size_t)(text_length));
+
*(textp->text + text_length) = '\0';
-#ifdef PNG_iTXt_SUPPORTED
+# ifdef PNG_iTXt_SUPPORTED
if (textp->compression > 0)
{
textp->text_length = 0;
textp->itxt_length = text_length;
}
- else
-#endif
+ else
+# endif
{
textp->text_length = text_length;
-#ifdef PNG_iTXt_SUPPORTED
textp->itxt_length = 0;
-#endif
}
+
info_ptr->num_text++;
png_debug1(3, "transferred text chunk %d", info_ptr->num_text);
}
@@ -804,7 +856,7 @@
#ifdef PNG_tIME_SUPPORTED
void PNGAPI
-png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
+png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_const_timep mod_time)
{
png_debug1(1, "in %s storage function", "tIME");
@@ -812,6 +864,15 @@
(png_ptr->mode & PNG_WROTE_tIME))
return;
+ if (mod_time->month == 0 || mod_time->month > 12 ||
+ mod_time->day == 0 || mod_time->day > 31 ||
+ mod_time->hour > 23 || mod_time->minute > 59 ||
+ mod_time->second > 60)
+ {
+ png_warning(png_ptr, "Ignoring invalid time value");
+ return;
+ }
+
png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time));
info_ptr->valid |= PNG_INFO_tIME;
}
@@ -820,7 +881,7 @@
#ifdef PNG_tRNS_SUPPORTED
void PNGAPI
png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
- png_bytep trans_alpha, int num_trans, png_color_16p trans_color)
+ png_const_bytep trans_alpha, int num_trans, png_const_color_16p trans_color)
{
png_debug1(1, "in %s storage function", "tRNS");
@@ -837,8 +898,9 @@
png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
/* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
- png_ptr->trans_alpha = info_ptr->trans_alpha = (png_bytep)png_malloc(png_ptr,
- (png_size_t)PNG_MAX_PALETTE_LENGTH);
+ png_ptr->trans_alpha = info_ptr->trans_alpha =
+ (png_bytep)png_malloc(png_ptr, (png_size_t)PNG_MAX_PALETTE_LENGTH);
+
if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
png_memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
}
@@ -846,6 +908,7 @@
if (trans_color != NULL)
{
int sample_max = (1 << info_ptr->bit_depth);
+
if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
(int)trans_color->gray > sample_max) ||
(info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
@@ -854,13 +917,16 @@
(int)trans_color->blue > sample_max)))
png_warning(png_ptr,
"tRNS chunk has out-of-range samples for bit_depth");
+
png_memcpy(&(info_ptr->trans_color), trans_color,
png_sizeof(png_color_16));
+
if (num_trans == 0)
num_trans = 1;
}
info_ptr->num_trans = (png_uint_16)num_trans;
+
if (num_trans != 0)
{
info_ptr->valid |= PNG_INFO_tRNS;
@@ -872,11 +938,12 @@
#ifdef PNG_sPLT_SUPPORTED
void PNGAPI
png_set_sPLT(png_structp png_ptr,
- png_infop info_ptr, png_sPLT_tp entries, int nentries)
+ png_infop info_ptr, png_const_sPLT_tp entries, int nentries)
/*
* entries - array of png_sPLT_t structures
* to be added to the list of palettes
* in the info structure.
+ *
* nentries - number of palette structures to be
* added.
*/
@@ -889,7 +956,8 @@
np = (png_sPLT_tp)png_malloc_warn(png_ptr,
(info_ptr->splt_palettes_num + nentries) *
- (png_size_t)png_sizeof(png_sPLT_t));
+ (png_size_t)png_sizeof(png_sPLT_t));
+
if (np == NULL)
{
png_warning(png_ptr, "No memory for sPLT palettes");
@@ -898,36 +966,42 @@
png_memcpy(np, info_ptr->splt_palettes,
info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t));
+
png_free(png_ptr, info_ptr->splt_palettes);
info_ptr->splt_palettes=NULL;
for (i = 0; i < nentries; i++)
{
png_sPLT_tp to = np + info_ptr->splt_palettes_num + i;
- png_sPLT_tp from = entries + i;
- png_uint_32 length;
+ png_const_sPLT_tp from = entries + i;
+ png_size_t length;
length = png_strlen(from->name) + 1;
- to->name = (png_charp)png_malloc_warn(png_ptr, (png_size_t)length);
+ to->name = (png_charp)png_malloc_warn(png_ptr, length);
+
if (to->name == NULL)
{
png_warning(png_ptr,
- "Out of memory while processing sPLT chunk");
+ "Out of memory while processing sPLT chunk");
continue;
}
+
png_memcpy(to->name, from->name, length);
to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr,
- (png_size_t)(from->nentries * png_sizeof(png_sPLT_entry)));
+ from->nentries * png_sizeof(png_sPLT_entry));
+
if (to->entries == NULL)
{
png_warning(png_ptr,
- "Out of memory while processing sPLT chunk");
+ "Out of memory while processing sPLT chunk");
png_free(png_ptr, to->name);
to->name = NULL;
continue;
}
+
png_memcpy(to->entries, from->entries,
from->nentries * png_sizeof(png_sPLT_entry));
+
to->nentries = from->nentries;
to->depth = from->depth;
}
@@ -942,7 +1016,7 @@
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
void PNGAPI
png_set_unknown_chunks(png_structp png_ptr,
- png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
+ png_infop info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns)
{
png_unknown_chunkp np;
int i;
@@ -951,8 +1025,9 @@
return;
np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
- (png_size_t)((info_ptr->unknown_chunks_num + num_unknowns) *
- png_sizeof(png_unknown_chunk)));
+ (png_size_t)(info_ptr->unknown_chunks_num + num_unknowns) *
+ png_sizeof(png_unknown_chunk));
+
if (np == NULL)
{
png_warning(png_ptr,
@@ -961,34 +1036,39 @@
}
png_memcpy(np, info_ptr->unknown_chunks,
- info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk));
+ (png_size_t)info_ptr->unknown_chunks_num *
+ png_sizeof(png_unknown_chunk));
+
png_free(png_ptr, info_ptr->unknown_chunks);
info_ptr->unknown_chunks = NULL;
for (i = 0; i < num_unknowns; i++)
{
png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
- png_unknown_chunkp from = unknowns + i;
+ png_const_unknown_chunkp from = unknowns + i;
- png_memcpy((png_charp)to->name, (png_charp)from->name,
- png_sizeof(from->name));
+ png_memcpy(to->name, from->name, png_sizeof(from->name));
to->name[png_sizeof(to->name)-1] = '\0';
to->size = from->size;
+
/* Note our location in the read or write sequence */
to->location = (png_byte)(png_ptr->mode & 0xff);
if (from->size == 0)
to->data=NULL;
+
else
{
to->data = (png_bytep)png_malloc_warn(png_ptr,
- (png_size_t)from->size);
+ (png_size_t)from->size);
+
if (to->data == NULL)
{
png_warning(png_ptr,
- "Out of memory while processing unknown chunk");
+ "Out of memory while processing unknown chunk");
to->size = 0;
}
+
else
png_memcpy(to->data, from->data, from->size);
}
@@ -998,12 +1078,13 @@
info_ptr->unknown_chunks_num += num_unknowns;
info_ptr->free_me |= PNG_FREE_UNKN;
}
+
void PNGAPI
png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
- int chunk, int location)
+ int chunk, int location)
{
if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
- (int)info_ptr->unknown_chunks_num)
+ info_ptr->unknown_chunks_num)
info_ptr->unknown_chunks[chunk].location = (png_byte)location;
}
#endif
@@ -1011,46 +1092,54 @@
#ifdef PNG_MNG_FEATURES_SUPPORTED
png_uint_32 PNGAPI
-png_permit_mng_features(png_structp png_ptr, png_uint_32 mng_features)
+png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
{
png_debug(1, "in png_permit_mng_features");
if (png_ptr == NULL)
return (png_uint_32)0;
+
png_ptr->mng_features_permitted =
- (png_byte)(mng_features & PNG_ALL_MNG_FEATURES);
+ (png_byte)(mng_features & PNG_ALL_MNG_FEATURES);
+
return (png_uint_32)png_ptr->mng_features_permitted;
}
#endif
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
void PNGAPI
-png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
- chunk_list, int num_chunks)
+png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_const_bytep
+ chunk_list, int num_chunks)
{
png_bytep new_list, p;
int i, old_num_chunks;
if (png_ptr == NULL)
return;
+
if (num_chunks == 0)
{
if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE)
png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
+
else
png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
if (keep == PNG_HANDLE_CHUNK_ALWAYS)
png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS;
+
else
png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS;
+
return;
}
+
if (chunk_list == NULL)
return;
+
old_num_chunks = png_ptr->num_chunk_list;
new_list=(png_bytep)png_malloc(png_ptr,
- (png_size_t)
- (5*(num_chunks + old_num_chunks)));
+ (png_size_t)(5*(num_chunks + old_num_chunks)));
+
if (png_ptr->chunk_list != NULL)
{
png_memcpy(new_list, png_ptr->chunk_list,
@@ -1058,10 +1147,13 @@
png_free(png_ptr, png_ptr->chunk_list);
png_ptr->chunk_list=NULL;
}
+
png_memcpy(new_list + 5*old_num_chunks, chunk_list,
(png_size_t)(5*num_chunks));
+
for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5)
*p=(png_byte)keep;
+
png_ptr->num_chunk_list = old_num_chunks + num_chunks;
png_ptr->chunk_list = new_list;
png_ptr->free_me |= PNG_FREE_LIST;
@@ -1071,7 +1163,7 @@
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
void PNGAPI
png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr,
- png_user_chunk_ptr read_user_chunk_fn)
+ png_user_chunk_ptr read_user_chunk_fn)
{
png_debug(1, "in png_set_read_user_chunk_fn");
@@ -1094,23 +1186,40 @@
if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers))
png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
+
info_ptr->row_pointers = row_pointers;
+
if (row_pointers)
info_ptr->valid |= PNG_INFO_IDAT;
}
#endif
void PNGAPI
-png_set_compression_buffer_size(png_structp png_ptr,
- png_size_t size)
+png_set_compression_buffer_size(png_structp png_ptr, png_size_t size)
{
if (png_ptr == NULL)
return;
+
png_free(png_ptr, png_ptr->zbuf);
- png_ptr->zbuf_size = size;
+
+ if (size > ZLIB_IO_MAX)
+ {
+ png_warning(png_ptr, "Attempt to set buffer size beyond max ignored");
+ png_ptr->zbuf_size = ZLIB_IO_MAX;
+ size = ZLIB_IO_MAX; /* must fit */
+ }
+
+ else
+ png_ptr->zbuf_size = (uInt)size;
+
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
+
+ /* The following ensures a relatively safe failure if this gets called while
+ * the buffer is actually in use.
+ */
png_ptr->zstream.next_out = png_ptr->zbuf;
- png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ png_ptr->zstream.avail_out = 0;
+ png_ptr->zstream.avail_in = 0;
}
void PNGAPI
@@ -1125,7 +1234,7 @@
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* This function was added to libpng 1.2.6 */
void PNGAPI
-png_set_user_limits(png_structp png_ptr, png_uint_32 user_width_max,
+png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max,
png_uint_32 user_height_max)
{
/* Images with dimensions larger than these limits will be
@@ -1134,13 +1243,14 @@
*/
if (png_ptr == NULL)
return;
+
png_ptr->user_width_max = user_width_max;
png_ptr->user_height_max = user_height_max;
}
/* This function was added to libpng 1.4.0 */
void PNGAPI
-png_set_chunk_cache_max(png_structp png_ptr,
+png_set_chunk_cache_max (png_structp png_ptr,
png_uint_32 user_chunk_cache_max)
{
if (png_ptr)
@@ -1149,12 +1259,11 @@
/* This function was added to libpng 1.4.1 */
void PNGAPI
-png_set_chunk_malloc_max(png_structp png_ptr,
- png_alloc_size_t user_chunk_malloc_max)
+png_set_chunk_malloc_max (png_structp png_ptr,
+ png_alloc_size_t user_chunk_malloc_max)
{
- if (png_ptr)
- png_ptr->user_chunk_malloc_max =
- (png_size_t)user_chunk_malloc_max;
+ if (png_ptr)
+ png_ptr->user_chunk_malloc_max = user_chunk_malloc_max;
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
@@ -1167,6 +1276,7 @@
if (allowed)
png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN;
+
else
png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN;
}
diff --git a/pngstruct.h b/pngstruct.h
new file mode 100644
index 0000000..3425ff2
--- /dev/null
+++ b/pngstruct.h
@@ -0,0 +1,358 @@
+
+/* pngstruct.h - header file for PNG reference library
+ *
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * Last changed in libpng 1.5.9 [(PENDING RELEASE)]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+/* The structure that holds the information to read and write PNG files.
+ * The only people who need to care about what is inside of this are the
+ * people who will be modifying the library for their own special needs.
+ * It should NOT be accessed directly by an application.
+ */
+
+#ifndef PNGSTRUCT_H
+#define PNGSTRUCT_H
+/* zlib.h defines the structure z_stream, an instance of which is included
+ * in this structure and is required for decompressing the LZ compressed
+ * data in PNG files.
+ */
+#include "zlib.h"
+
+struct png_struct_def
+{
+#ifdef PNG_SETJMP_SUPPORTED
+ jmp_buf longjmp_buffer; /* used in png_error */
+ png_longjmp_ptr longjmp_fn;/* setjmp non-local goto function. */
+#endif
+ png_error_ptr error_fn; /* function for printing errors and aborting */
+#ifdef PNG_WARNINGS_SUPPORTED
+ png_error_ptr warning_fn; /* function for printing warnings */
+#endif
+ png_voidp error_ptr; /* user supplied struct for error functions */
+ png_rw_ptr write_data_fn; /* function for writing output data */
+ png_rw_ptr read_data_fn; /* function for reading input data */
+ png_voidp io_ptr; /* ptr to application struct for I/O functions */
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ png_user_transform_ptr read_user_transform_fn; /* user read transform */
+#endif
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ png_user_transform_ptr write_user_transform_fn; /* user write transform */
+#endif
+
+/* These were added in libpng-1.0.2 */
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+ png_voidp user_transform_ptr; /* user supplied struct for user transform */
+ png_byte user_transform_depth; /* bit depth of user transformed pixels */
+ png_byte user_transform_channels; /* channels in user transformed pixels */
+#endif
+#endif
+
+ png_uint_32 mode; /* tells us where we are in the PNG file */
+ png_uint_32 flags; /* flags indicating various things to libpng */
+ png_uint_32 transformations; /* which transformations to perform */
+
+ z_stream zstream; /* pointer to decompression structure (below) */
+ png_bytep zbuf; /* buffer for zlib */
+ uInt zbuf_size; /* size of zbuf (typically 65536) */
+#ifdef PNG_WRITE_SUPPORTED
+
+/* Added in 1.5.4: state to keep track of whether the zstream has been
+ * initialized and if so whether it is for IDAT or some other chunk.
+ */
+#define PNG_ZLIB_UNINITIALIZED 0
+#define PNG_ZLIB_FOR_IDAT 1
+#define PNG_ZLIB_FOR_TEXT 2 /* anything other than IDAT */
+#define PNG_ZLIB_USE_MASK 3 /* bottom two bits */
+#define PNG_ZLIB_IN_USE 4 /* a flag value */
+
+ png_uint_32 zlib_state; /* State of zlib initialization */
+/* End of material added at libpng 1.5.4 */
+
+ int zlib_level; /* holds zlib compression level */
+ int zlib_method; /* holds zlib compression method */
+ int zlib_window_bits; /* holds zlib compression window bits */
+ int zlib_mem_level; /* holds zlib compression memory level */
+ int zlib_strategy; /* holds zlib compression strategy */
+#endif
+/* Added at libpng 1.5.4 */
+#if defined(PNG_WRITE_COMPRESSED_TEXT_SUPPORTED) || \
+ defined(PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED)
+ int zlib_text_level; /* holds zlib compression level */
+ int zlib_text_method; /* holds zlib compression method */
+ int zlib_text_window_bits; /* holds zlib compression window bits */
+ int zlib_text_mem_level; /* holds zlib compression memory level */
+ int zlib_text_strategy; /* holds zlib compression strategy */
+#endif
+/* End of material added at libpng 1.5.4 */
+
+ png_uint_32 width; /* width of image in pixels */
+ png_uint_32 height; /* height of image in pixels */
+ png_uint_32 num_rows; /* number of rows in current pass */
+ png_uint_32 usr_width; /* width of row at start of write */
+ png_size_t rowbytes; /* size of row in bytes */
+ png_uint_32 iwidth; /* width of current interlaced row in pixels */
+ png_uint_32 row_number; /* current row in interlace pass */
+ png_uint_32 chunk_name; /* PNG_CHUNK() id of current chunk */
+ png_bytep prev_row; /* buffer to save previous (unfiltered) row.
+ * This is a pointer into big_prev_row
+ */
+ png_bytep row_buf; /* buffer to save current (unfiltered) row.
+ * This is a pointer into big_row_buf
+ */
+ png_bytep sub_row; /* buffer to save "sub" row when filtering */
+ png_bytep up_row; /* buffer to save "up" row when filtering */
+ png_bytep avg_row; /* buffer to save "avg" row when filtering */
+ png_bytep paeth_row; /* buffer to save "Paeth" row when filtering */
+ png_size_t info_rowbytes; /* Added in 1.5.4: cache of updated row bytes */
+
+ png_uint_32 idat_size; /* current IDAT size for read */
+ png_uint_32 crc; /* current chunk CRC value */
+ png_colorp palette; /* palette from the input file */
+ png_uint_16 num_palette; /* number of color entries in palette */
+ png_uint_16 num_trans; /* number of transparency values */
+ png_byte compression; /* file compression type (always 0) */
+ png_byte filter; /* file filter type (always 0) */
+ png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
+ png_byte pass; /* current interlace pass (0 - 6) */
+ png_byte do_filter; /* row filter flags (see PNG_FILTER_ below ) */
+ png_byte color_type; /* color type of file */
+ png_byte bit_depth; /* bit depth of file */
+ png_byte usr_bit_depth; /* bit depth of users row: write only */
+ png_byte pixel_depth; /* number of bits per pixel */
+ png_byte channels; /* number of channels in file */
+ png_byte usr_channels; /* channels at start of write: write only */
+ png_byte sig_bytes; /* magic bytes read/written from start of file */
+ png_byte maximum_pixel_depth;
+ /* pixel depth used for the row buffers */
+ png_byte transformed_pixel_depth;
+ /* pixel depth after read/write transforms */
+ png_byte io_chunk_string[5];
+ /* string name of chunk */
+
+#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
+ png_uint_16 filler; /* filler bytes for pixel expansion */
+#endif
+
+#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+ png_byte background_gamma_type;
+ png_fixed_point background_gamma;
+ png_color_16 background; /* background color in screen gamma space */
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ png_color_16 background_1; /* background normalized to gamma 1.0 */
+#endif
+#endif /* PNG_bKGD_SUPPORTED */
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+ png_flush_ptr output_flush_fn; /* Function for flushing output */
+ png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */
+ png_uint_32 flush_rows; /* number of rows written since last flush */
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ int gamma_shift; /* number of "insignificant" bits in 16-bit gamma */
+ png_fixed_point gamma; /* file gamma value */
+ png_fixed_point screen_gamma; /* screen gamma value (display_exponent) */
+
+ png_bytep gamma_table; /* gamma table for 8-bit depth files */
+ png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+ png_bytep gamma_from_1; /* converts from 1.0 to screen */
+ png_bytep gamma_to_1; /* converts from file to 1.0 */
+ png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */
+ png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
+ png_color_8 sig_bit; /* significant bits in each available channel */
+#endif
+
+#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
+ png_color_8 shift; /* shift for significant bit tranformation */
+#endif
+
+#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
+ || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ png_bytep trans_alpha; /* alpha values for paletted files */
+ png_color_16 trans_color; /* transparent color for non-paletted files */
+#endif
+
+ png_read_status_ptr read_row_fn; /* called after each row is decoded */
+ png_write_status_ptr write_row_fn; /* called after each row is encoded */
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+ png_progressive_info_ptr info_fn; /* called after header data fully read */
+ png_progressive_row_ptr row_fn; /* called after a prog. row is decoded */
+ png_progressive_end_ptr end_fn; /* called after image is complete */
+ png_bytep save_buffer_ptr; /* current location in save_buffer */
+ png_bytep save_buffer; /* buffer for previously read data */
+ png_bytep current_buffer_ptr; /* current location in current_buffer */
+ png_bytep current_buffer; /* buffer for recently used data */
+ png_uint_32 push_length; /* size of current input chunk */
+ png_uint_32 skip_length; /* bytes to skip in input data */
+ png_size_t save_buffer_size; /* amount of data now in save_buffer */
+ png_size_t save_buffer_max; /* total size of save_buffer */
+ png_size_t buffer_size; /* total amount of available input data */
+ png_size_t current_buffer_size; /* amount of data now in current_buffer */
+ int process_mode; /* what push library is currently doing */
+ int cur_palette; /* current push library palette index */
+
+# ifdef PNG_TEXT_SUPPORTED
+ png_size_t current_text_size; /* current size of text input data */
+ png_size_t current_text_left; /* how much text left to read in input */
+ png_charp current_text; /* current text chunk buffer */
+ png_charp current_text_ptr; /* current location in current_text */
+# endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
+
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+
+#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
+/* For the Borland special 64K segment handler */
+ png_bytepp offset_table_ptr;
+ png_bytep offset_table;
+ png_uint_16 offset_table_number;
+ png_uint_16 offset_table_count;
+ png_uint_16 offset_table_count_free;
+#endif
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+ png_bytep palette_lookup; /* lookup table for quantizing */
+ png_bytep quantize_index; /* index translation for palette files */
+#endif
+
+#if defined(PNG_READ_QUANTIZE_SUPPORTED) || defined(PNG_hIST_SUPPORTED)
+ png_uint_16p hist; /* histogram */
+#endif
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ png_byte heuristic_method; /* heuristic for row filter selection */
+ png_byte num_prev_filters; /* number of weights for previous rows */
+ png_bytep prev_filters; /* filter type(s) of previous row(s) */
+ png_uint_16p filter_weights; /* weight(s) for previous line(s) */
+ png_uint_16p inv_filter_weights; /* 1/weight(s) for previous line(s) */
+ png_uint_16p filter_costs; /* relative filter calculation cost */
+ png_uint_16p inv_filter_costs; /* 1/relative filter calculation cost */
+#endif
+
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ char time_buffer[29]; /* String to hold RFC 1123 time text */
+#endif
+
+/* New members added in libpng-1.0.6 */
+
+ png_uint_32 free_me; /* flags items libpng is responsible for freeing */
+
+#ifdef PNG_USER_CHUNKS_SUPPORTED
+ png_voidp user_chunk_ptr;
+ png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
+#endif
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ int num_chunk_list;
+ png_bytep chunk_list;
+#endif
+
+#ifdef PNG_READ_sRGB_SUPPORTED
+ /* Added in 1.5.5 to record an sRGB chunk in the png. */
+ png_byte is_sRGB;
+#endif
+
+/* New members added in libpng-1.0.3 */
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ png_byte rgb_to_gray_status;
+ /* Added in libpng 1.5.5 to record setting of coefficients: */
+ png_byte rgb_to_gray_coefficients_set;
+ /* These were changed from png_byte in libpng-1.0.6 */
+ png_uint_16 rgb_to_gray_red_coeff;
+ png_uint_16 rgb_to_gray_green_coeff;
+ /* deleted in 1.5.5: rgb_to_gray_blue_coeff; */
+#endif
+
+/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
+#if defined(PNG_MNG_FEATURES_SUPPORTED)
+/* Changed from png_byte to png_uint_32 at version 1.2.0 */
+ png_uint_32 mng_features_permitted;
+#endif
+
+/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ png_byte filter_type;
+#endif
+
+/* New members added in libpng-1.2.0 */
+
+/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_voidp mem_ptr; /* user supplied struct for mem functions */
+ png_malloc_ptr malloc_fn; /* function for allocating memory */
+ png_free_ptr free_fn; /* function for freeing memory */
+#endif
+
+/* New member added in libpng-1.0.13 and 1.2.0 */
+ png_bytep big_row_buf; /* buffer to save current (unfiltered) row */
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+/* The following three members were added at version 1.0.14 and 1.2.4 */
+ png_bytep quantize_sort; /* working sort array */
+ png_bytep index_to_palette; /* where the original index currently is
+ in the palette */
+ png_bytep palette_to_index; /* which original index points to this
+ palette color */
+#endif
+
+/* New members added in libpng-1.0.16 and 1.2.6 */
+ png_byte compression_type;
+
+#ifdef PNG_USER_LIMITS_SUPPORTED
+ png_uint_32 user_width_max;
+ png_uint_32 user_height_max;
+
+ /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
+ * chunks that can be stored (0 means unlimited).
+ */
+ png_uint_32 user_chunk_cache_max;
+
+ /* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk
+ * can occupy when decompressed. 0 means unlimited.
+ */
+ png_alloc_size_t user_chunk_malloc_max;
+#endif
+
+/* New member added in libpng-1.0.25 and 1.2.17 */
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+ /* Storage for unknown chunk that the library doesn't recognize. */
+ png_unknown_chunk unknown_chunk;
+#endif
+
+/* New member added in libpng-1.2.26 */
+ png_size_t old_big_row_buf_size;
+
+/* New member added in libpng-1.2.30 */
+ png_charp chunkdata; /* buffer for reading chunk data */
+
+#ifdef PNG_IO_STATE_SUPPORTED
+/* New member added in libpng-1.4.0 */
+ png_uint_32 io_state;
+#endif
+
+/* New member added in libpng-1.5.6 */
+ png_bytep big_prev_row;
+
+ void (*read_filter[PNG_FILTER_VALUE_LAST-1])(png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row);
+};
+#endif /* PNGSTRUCT_H */
diff --git a/pngtest.c b/pngtest.c
index de79414..c582ccd 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng
*
- * Last changed in libpng 1.4.8 [July 7, 2011]
+ * Last changed in libpng 1.5.6 [November 3, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -31,23 +31,24 @@
* of files at once by typing "pngtest -m file1.png file2.png ..."
*/
+#define _POSIX_SOURCE 1
+
#include "zlib.h"
#include "png.h"
-
/* Copied from pngpriv.h but only used in error messages below. */
#ifndef PNG_ZBUF_SIZE
# define PNG_ZBUF_SIZE 8192
#endif
-
# include <stdio.h>
# include <stdlib.h>
+# include <string.h>
# define FCLOSE(file) fclose(file)
#ifndef PNG_STDIO_SUPPORTED
- typedef FILE * png_FILE_p;
+typedef FILE * png_FILE_p;
#endif
-/* Makes pngtest verbose so we can find problems (needs to be before png.h) */
+/* Makes pngtest verbose so we can find problems. */
#ifndef PNG_DEBUG
# define PNG_DEBUG 0
#endif
@@ -66,6 +67,17 @@
# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
#endif
+/* The code uses memcmp and memcpy on large objects (typically row pointers) so
+ * it is necessary to do soemthing special on certain architectures, note that
+ * the actual support for this was effectively removed in 1.4, so only the
+ * memory remains in this program:
+ */
+#define CVT_PTR(ptr) (ptr)
+#define CVT_PTR_NOCHECK(ptr) (ptr)
+#define png_memcmp memcmp
+#define png_memcpy memcpy
+#define png_memset memset
+
/* Turn on CPU timing
#define PNGTEST_TIMING
*/
@@ -86,6 +98,7 @@
#endif
static int verbose = 0;
+static int strict = 0;
int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
@@ -97,11 +110,6 @@
/* #define STDERR stderr */
#define STDERR stdout /* For DOS */
-/* In case a system header (e.g., on AIX) defined jmpbuf */
-#ifdef jmpbuf
-# undef jmpbuf
-#endif
-
/* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
#ifndef png_jmpbuf
# define png_jmpbuf(png_ptr) png_ptr->jmpbuf
@@ -112,35 +120,40 @@
static int status_dots_requested = 0;
static int status_dots = 1;
-void
+void PNGCBAPI
read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
-void
+void PNGCBAPI
read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
{
if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
return;
+
if (status_pass != pass)
{
fprintf(stdout, "\n Pass %d: ", pass);
status_pass = pass;
status_dots = 31;
}
+
status_dots--;
+
if (status_dots == 0)
{
fprintf(stdout, "\n ");
status_dots=30;
}
+
fprintf(stdout, "r");
}
-void
+void PNGCBAPI
write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
-void
+void PNGCBAPI
write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
{
if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
return;
+
fprintf(stdout, "w");
}
@@ -151,9 +164,9 @@
* 5 in case illegal filter values are present.)
*/
static png_uint_32 filters_used[256];
-void
+void PNGCBAPI
count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data);
-void
+void PNGCBAPI
count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
{
if (png_ptr != NULL && row_info != NULL)
@@ -168,13 +181,14 @@
static png_uint_32 zero_samples;
-void
+void PNGCBAPI
count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data);
-void
+void PNGCBAPI
count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
{
png_bytep dp = data;
- if (png_ptr == NULL)return;
+ if (png_ptr == NULL)
+ return;
/* Contents of row_info:
* png_uint_32 width width of row
@@ -191,41 +205,49 @@
{
int pos = 0;
png_uint_32 n, nstop;
+
for (n = 0, nstop=row_info->width; n<nstop; n++)
{
if (row_info->bit_depth == 1)
{
if (((*dp << pos++ ) & 0x80) == 0)
zero_samples++;
+
if (pos == 8)
{
pos = 0;
dp++;
}
}
+
if (row_info->bit_depth == 2)
{
if (((*dp << (pos+=2)) & 0xc0) == 0)
zero_samples++;
+
if (pos == 8)
{
pos = 0;
dp++;
}
}
+
if (row_info->bit_depth == 4)
{
if (((*dp << (pos+=4)) & 0xf0) == 0)
zero_samples++;
+
if (pos == 8)
{
pos = 0;
dp++;
}
}
+
if (row_info->bit_depth == 8)
if (*dp++ == 0)
zero_samples++;
+
if (row_info->bit_depth == 16)
{
if ((*dp | *(dp+1)) == 0)
@@ -248,10 +270,12 @@
if (row_info->bit_depth == 8)
if (*dp++ == 0)
zero_samples++;
+
if (row_info->bit_depth == 16)
{
if ((*dp | *(dp+1)) == 0)
zero_samples++;
+
dp+=2;
}
}
@@ -321,7 +345,7 @@
#endif
#ifndef USE_FAR_KEYWORD
-static void
+static void PNGCBAPI
pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_size_t check = 0;
@@ -354,7 +378,7 @@
#define NEAR_BUF_SIZE 1024
#define MIN(a,b) (a <= b ? a : b)
-static void
+static void PNGCBAPI
pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_size_t check;
@@ -374,6 +398,7 @@
png_size_t read, remaining, err;
check = 0;
remaining = length;
+
do
{
read = MIN(NEAR_BUF_SIZE, remaining);
@@ -388,6 +413,7 @@
}
while (remaining != 0);
}
+
if (check != length)
png_error(png_ptr, "Read Error");
@@ -398,7 +424,7 @@
#endif /* USE_FAR_KEYWORD */
#ifdef PNG_WRITE_FLUSH_SUPPORTED
-static void
+static void PNGCBAPI
pngtest_flush(png_structp png_ptr)
{
/* Do nothing; fflush() is said to be just a waste of energy. */
@@ -412,14 +438,13 @@
* than changing the library.
*/
#ifndef USE_FAR_KEYWORD
-static void
+static void PNGCBAPI
pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_size_t check;
- png_FILE_p io_ptr;
- io_ptr = (png_FILE_p)CVT_PTR(png_get_io_ptr(png_ptr));
- check = fwrite(data, 1, length, io_ptr);
+ check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr));
+
if (check != length)
{
png_error(png_ptr, "Write Error");
@@ -438,7 +463,7 @@
#define NEAR_BUF_SIZE 1024
#define MIN(a,b) (a <= b ? a : b)
-static void
+static void PNGCBAPI
pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_size_t check;
@@ -447,17 +472,20 @@
/* Check if data really is near. If so, use usual code. */
near_data = (png_byte *)CVT_PTR_NOCHECK(data);
- io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
+ io_ptr = (png_FILE_p)CVT_PTR(png_get_io_ptr(png_ptr));
+
if ((png_bytep)near_data == data)
{
check = fwrite(near_data, 1, length, io_ptr);
}
+
else
{
png_byte buf[NEAR_BUF_SIZE];
png_size_t written, remaining, err;
check = 0;
remaining = length;
+
do
{
written = MIN(NEAR_BUF_SIZE, remaining);
@@ -472,6 +500,7 @@
}
while (remaining != 0);
}
+
if (check != length)
{
png_error(png_ptr, "Write Error");
@@ -488,14 +517,16 @@
* here if you don't want to. In the default configuration, png_ptr is
* not used, but it is passed in case it may be useful.
*/
-static void
+static void PNGCBAPI
pngtest_warning(png_structp png_ptr, png_const_charp message)
{
PNG_CONST char *name = "UNKNOWN (ERROR!)";
char *test;
test = png_get_error_ptr(png_ptr);
+
if (test == NULL)
fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
+
else
fprintf(STDERR, "%s: libpng warning: %s\n", test, message);
}
@@ -505,7 +536,7 @@
* function is used by default, or if the program supplies NULL for the
* error function pointer in png_set_error_fn().
*/
-static void
+static void PNGCBAPI
pngtest_error(png_structp png_ptr, png_const_charp message)
{
pngtest_warning(png_ptr, message);
@@ -542,16 +573,16 @@
static int total_allocation = 0;
static int num_allocations = 0;
-png_voidp pngtest_debug_malloc
- PNGARG((png_structp png_ptr, png_alloc_size_t size));
-void pngtest_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
+png_voidp PNGCBAPI png_debug_malloc PNGARG((png_structp png_ptr,
+ png_alloc_size_t size));
+void PNGCBAPI png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
png_voidp
-pngtest_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
+PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
{
/* png_malloc has already tested for NULL; png_create_struct calls
- * pngtest_debug_malloc directly, with png_ptr == NULL which is OK
+ * png_debug_malloc directly, with png_ptr == NULL which is OK
*/
if (size == 0)
@@ -569,36 +600,44 @@
current_allocation += size;
total_allocation += size;
num_allocations ++;
+
if (current_allocation > maximum_allocation)
maximum_allocation = current_allocation;
+
pinfo->pointer = png_malloc(png_ptr, size);
/* Restore malloc_fn and free_fn */
+
png_set_mem_fn(png_ptr,
- NULL, pngtest_debug_malloc, pngtest_debug_free);
+ NULL, png_debug_malloc, png_debug_free);
+
if (size != 0 && pinfo->pointer == NULL)
{
current_allocation -= size;
total_allocation -= size;
png_error(png_ptr,
- "out of memory in pngtest->pngtest_debug_malloc");
+ "out of memory in pngtest->png_debug_malloc");
}
+
pinfo->next = pinformation;
pinformation = pinfo;
/* Make sure the caller isn't assuming zeroed memory. */
png_memset(pinfo->pointer, 0xdd, pinfo->size);
+
if (verbose)
- printf("png_malloc %lu bytes at %x\n", (unsigned long)size,
+ printf("png_malloc %lu bytes at %p\n", (unsigned long)size,
pinfo->pointer);
+
return (png_voidp)(pinfo->pointer);
}
}
/* Free a pointer. It is removed from the list at the same time. */
-void
-pngtest_debug_free(png_structp png_ptr, png_voidp ptr)
+void PNGCBAPI
+png_debug_free(png_structp png_ptr, png_voidp ptr)
{
if (png_ptr == NULL)
- fprintf(STDERR, "NULL pointer to pngtest_debug_free.\n");
+ fprintf(STDERR, "NULL pointer to png_debug_free.\n");
+
if (ptr == 0)
{
#if 0 /* This happens all the time. */
@@ -610,9 +649,11 @@
/* Unlink the element from the list. */
{
memory_infop FAR *ppinfo = &pinformation;
+
for (;;)
{
memory_infop pinfo = *ppinfo;
+
if (pinfo->pointer == ptr)
{
*ppinfo = pinfo->next;
@@ -626,18 +667,21 @@
pinfo = NULL;
break;
}
+
if (pinfo->next == NULL)
{
fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
break;
}
+
ppinfo = &pinfo->next;
}
}
/* Finally free the data. */
if (verbose)
- printf("Freeing %x\n", ptr);
+ printf("Freeing %p\n", ptr);
+
png_free_default(png_ptr, ptr);
ptr = NULL;
}
@@ -659,7 +703,7 @@
* 3: vpAg units
*/
-static int read_user_chunk_callback(png_struct *png_ptr,
+static int PNGCBAPI read_user_chunk_callback(png_struct *png_ptr,
png_unknown_chunkp chunk)
{
png_uint_32
@@ -684,8 +728,10 @@
/* Found sTER chunk */
if (chunk->size != 1)
return (-1); /* Error return */
+
if (chunk->data[0] != 0 && chunk->data[0] != 1)
return (-1); /* Invalid mode */
+
my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
my_user_chunk_data[0]=chunk->data[0]+1;
return (1);
@@ -736,7 +782,7 @@
int bit_depth, color_type;
#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
- jmp_buf jmpbuf;
+ jmp_buf tmp_jmpbuf;
#endif
#endif
@@ -761,8 +807,7 @@
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
read_ptr =
png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
- NULL, NULL, NULL,
- (png_malloc_ptr)pngtest_debug_malloc, (png_free_ptr)pngtest_debug_free);
+ NULL, NULL, NULL, png_debug_malloc, png_debug_free);
#else
read_ptr =
png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
@@ -785,7 +830,7 @@
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
write_ptr =
png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
- NULL, NULL, NULL, pngtest_debug_malloc, pngtest_debug_free);
+ NULL, NULL, NULL, png_debug_malloc, png_debug_free);
#else
write_ptr =
png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
@@ -806,7 +851,7 @@
#ifdef PNG_SETJMP_SUPPORTED
pngtest_debug("Setting jmpbuf for read struct");
#ifdef USE_FAR_KEYWORD
- if (setjmp(jmpbuf))
+ if (setjmp(tmp_jmpbuf))
#else
if (setjmp(png_jmpbuf(read_ptr)))
#endif
@@ -824,13 +869,14 @@
return (1);
}
#ifdef USE_FAR_KEYWORD
- png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf));
+ png_memcpy(png_jmpbuf(read_ptr), tmp_jmpbuf, png_sizeof(jmp_buf));
#endif
#ifdef PNG_WRITE_SUPPORTED
pngtest_debug("Setting jmpbuf for write struct");
#ifdef USE_FAR_KEYWORD
- if (setjmp(jmpbuf))
+
+ if (setjmp(tmp_jmpbuf))
#else
if (setjmp(png_jmpbuf(write_ptr)))
#endif
@@ -845,8 +891,9 @@
FCLOSE(fpout);
return (1);
}
+
#ifdef USE_FAR_KEYWORD
- png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf));
+ png_memcpy(png_jmpbuf(write_ptr), tmp_jmpbuf, png_sizeof(jmp_buf));
#endif
#endif
#endif
@@ -868,6 +915,15 @@
# endif
# endif
#endif
+
+#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+ /* Normally one would use Z_DEFAULT_STRATEGY for text compression.
+ * This is here just to make pngtest replicate the results from libpng
+ * versions prior to 1.5.4, and to test this new API.
+ */
+ png_set_text_compression_strategy(write_ptr, Z_FILTERED);
+#endif
+
if (status_dots_requested == 1)
{
#ifdef PNG_WRITE_SUPPORTED
@@ -875,6 +931,7 @@
#endif
png_set_read_status_fn(read_ptr, read_row_callback);
}
+
else
{
#ifdef PNG_WRITE_SUPPORTED
@@ -886,8 +943,10 @@
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
{
int i;
+
for (i = 0; i<256; i++)
filters_used[i] = 0;
+
png_set_read_user_transform_fn(read_ptr, count_filters);
}
#endif
@@ -934,6 +993,7 @@
{
png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
blue_y;
+
if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
&red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y))
{
@@ -956,6 +1016,7 @@
{
double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
blue_y;
+
if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
&red_y, &green_x, &green_y, &blue_x, &blue_y))
{
@@ -977,7 +1038,7 @@
#ifdef PNG_iCCP_SUPPORTED
{
png_charp name;
- png_charp profile;
+ png_bytep profile;
png_uint_32 proflen;
int compression_type;
@@ -1102,6 +1163,10 @@
if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
{
pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
+
+ if (verbose)
+ printf("\n Text compression=%d\n", text_ptr->compression);
+
png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
}
}
@@ -1121,6 +1186,7 @@
png_memcpy(tIME_string,
png_convert_to_rfc1123(read_ptr, mod_time),
png_sizeof(tIME_string));
+
tIME_string[png_sizeof(tIME_string) - 1] = '\0';
tIME_chunk_present++;
#endif /* PNG_TIME_RFC1123_SUPPORTED */
@@ -1152,18 +1218,19 @@
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
{
png_unknown_chunkp unknowns;
- int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
+ int num_unknowns = png_get_unknown_chunks(read_ptr, read_info_ptr,
&unknowns);
+
if (num_unknowns)
{
- png_size_t i;
+ int i;
png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
num_unknowns);
/* Copy the locations from the read_info_ptr. The automatically
* generated locations in write_info_ptr are wrong because we
* haven't written anything yet.
*/
- for (i = 0; i < (png_size_t)num_unknowns; i++)
+ for (i = 0; i < num_unknowns; i++)
png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
unknowns[i].location);
}
@@ -1189,9 +1256,11 @@
if (verbose)
fprintf(STDERR, "\n stereo mode = %lu\n",
(unsigned long)(user_chunk_data[0] - 1));
+
ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1);
png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1);
}
+
if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0)
{
png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
@@ -1204,6 +1273,7 @@
(unsigned long)user_chunk_data[1],
(unsigned long)user_chunk_data[2],
(unsigned long)user_chunk_data[3]);
+
png_save_uint_32(vpag_chunk_data, user_chunk_data[1]);
png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]);
vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff);
@@ -1217,7 +1287,8 @@
pngtest_debug("Allocating row buffer...");
row_buf = (png_bytep)png_malloc(read_ptr,
png_get_rowbytes(read_ptr, read_info_ptr));
- pngtest_debug1("0x%08lx", (unsigned long)row_buf);
+
+ pngtest_debug1("\t0x%08lx", (unsigned long)row_buf);
#endif /* SINGLE_ROWBUF_ALLOC */
pngtest_debug("Writing row data");
@@ -1242,11 +1313,13 @@
for (y = 0; y < height; y++)
{
#ifndef SINGLE_ROWBUF_ALLOC
- pngtest_debug2("Allocating row buffer (pass %d, y = %ld)...", pass, y);
+ pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y);
row_buf = (png_bytep)png_malloc(read_ptr,
png_get_rowbytes(read_ptr, read_info_ptr));
- pngtest_debug2("0x%08lx (%ld bytes)", (unsigned long)row_buf,
+
+ pngtest_debug2("\t0x%08lx (%u bytes)", (unsigned long)row_buf,
png_get_rowbytes(read_ptr, read_info_ptr));
+
#endif /* !SINGLE_ROWBUF_ALLOC */
png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
@@ -1265,7 +1338,7 @@
#endif /* PNG_WRITE_SUPPORTED */
#ifndef SINGLE_ROWBUF_ALLOC
- pngtest_debug2("Freeing row buffer (pass %d, y = %ld)", pass, y);
+ pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y);
png_free(read_ptr, row_buf);
row_buf = NULL;
#endif /* !SINGLE_ROWBUF_ALLOC */
@@ -1308,6 +1381,7 @@
png_memcpy(tIME_string,
png_convert_to_rfc1123(read_ptr, mod_time),
png_sizeof(tIME_string));
+
tIME_string[png_sizeof(tIME_string) - 1] = '\0';
tIME_chunk_present++;
#endif /* PNG_TIME_RFC1123_SUPPORTED */
@@ -1317,19 +1391,19 @@
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
{
png_unknown_chunkp unknowns;
- int num_unknowns;
- num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr,
+ int num_unknowns = png_get_unknown_chunks(read_ptr, end_info_ptr,
&unknowns);
+
if (num_unknowns)
{
- png_size_t i;
+ int i;
png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
num_unknowns);
/* Copy the locations from the read_info_ptr. The automatically
* generated locations in write_end_info_ptr are wrong because we
* haven't written the end_info yet.
*/
- for (i = 0; i < (png_size_t)num_unknowns; i++)
+ for (i = 0; i < num_unknowns; i++)
png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
unknowns[i].location);
}
@@ -1394,6 +1468,7 @@
{
fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
inname, outname);
+
if (wrote_question == 0)
{
fprintf(STDERR,
@@ -1406,9 +1481,15 @@
ZLIB_VERSION);
wrote_question = 1;
}
+
FCLOSE(fpin);
FCLOSE(fpout);
- return (0);
+
+ if (strict != 0)
+ return (1);
+
+ else
+ return (0);
}
if (!num_in)
@@ -1417,6 +1498,7 @@
if (png_memcmp(inbuf, outbuf, num_in))
{
fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname);
+
if (wrote_question == 0)
{
fprintf(STDERR,
@@ -1429,9 +1511,15 @@
ZLIB_VERSION);
wrote_question = 1;
}
+
FCLOSE(fpin);
FCLOSE(fpout);
- return (0);
+
+ if (strict != 0)
+ return (1);
+
+ else
+ return (0);
}
}
@@ -1463,11 +1551,10 @@
fprintf(STDERR, " library (%lu):%s",
(unsigned long)png_access_version_number(),
png_get_header_version(NULL));
+
/* Show the version of libpng used in building the application */
fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
PNG_HEADER_VERSION_STRING);
- fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n",
- (long)png_sizeof(png_struct), (long)png_sizeof(png_info));
/* Do some consistency checking on the memory allocation settings, I'm
* not sure this matters, but it is nice to know, the first of these
@@ -1498,6 +1585,7 @@
multiple = 1;
status_dots_requested = 0;
}
+
else if (strcmp(argv[1], "-mv") == 0 ||
strcmp(argv[1], "-vm") == 0 )
{
@@ -1505,12 +1593,22 @@
verbose = 1;
status_dots_requested = 1;
}
+
else if (strcmp(argv[1], "-v") == 0)
{
verbose = 1;
status_dots_requested = 1;
inname = argv[2];
}
+
+ else if (strcmp(argv[1], "--strict") == 0)
+ {
+ status_dots_requested = 0;
+ verbose = 1;
+ inname = argv[2];
+ strict++;
+ }
+
else
{
inname = argv[1];
@@ -1564,9 +1662,11 @@
#ifdef PNG_TIME_RFC1123_SUPPORTED
if (tIME_chunk_present != 0)
fprintf(STDERR, " tIME = %s\n", tIME_string);
+
tIME_chunk_present = 0;
#endif /* PNG_TIME_RFC1123_SUPPORTED */
}
+
else
{
fprintf(STDERR, " FAIL\n");
@@ -1576,17 +1676,19 @@
if (allocation_now != current_allocation)
fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
current_allocation - allocation_now);
+
if (current_allocation != 0)
{
memory_infop pinfo = pinformation;
fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
current_allocation);
+
while (pinfo != NULL)
{
fprintf(STDERR, " %lu bytes at %x\n",
(unsigned long)pinfo->size,
- (unsigned int) pinfo->pointer);
+ (unsigned int)pinfo->pointer);
pinfo = pinfo->next;
}
}
@@ -1603,6 +1705,7 @@
num_allocations);
#endif
}
+
else
{
int i;
@@ -1612,11 +1715,17 @@
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
int allocation_now = current_allocation;
#endif
- if (i == 1) status_dots_requested = 1;
- else if (verbose == 0)status_dots_requested = 0;
+ if (i == 1)
+ status_dots_requested = 1;
+
+ else if (verbose == 0)
+ status_dots_requested = 0;
+
if (i == 0 || verbose == 1 || ierror != 0)
fprintf(STDERR, "\n Testing %s:", inname);
+
kerror = test_one_file(inname, outname);
+
if (kerror == 0)
{
if (verbose == 1 || i == 2)
@@ -1642,10 +1751,12 @@
#endif /* PNG_TIME_RFC1123_SUPPORTED */
}
}
+
else
{
if (verbose == 0 && i != 2)
fprintf(STDERR, "\n Testing %s:", inname);
+
fprintf(STDERR, " FAIL\n");
ierror += kerror;
}
@@ -1653,12 +1764,14 @@
if (allocation_now != current_allocation)
fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
current_allocation - allocation_now);
+
if (current_allocation != 0)
{
memory_infop pinfo = pinformation;
fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
current_allocation);
+
while (pinfo != NULL)
{
fprintf(STDERR, " %lu bytes at %x\n",
@@ -1696,10 +1809,12 @@
if (ierror == 0)
fprintf(STDERR, " libpng passes test\n");
+
else
fprintf(STDERR, " libpng FAILS test\n");
+
return (int)(ierror != 0);
}
/* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_9beta01 your_png_h_is_not_version_1_4_9beta01;
+typedef png_libpng_version_1_5_10beta01 Your_png_h_is_not_version_1_5_10beta01;
diff --git a/pngtest.png b/pngtest.png
index cfdd36f..81f5f84 100644
--- a/pngtest.png
+++ b/pngtest.png
Binary files differ
diff --git a/pngtrans.c b/pngtrans.c
index 6b42c29..6a6908d 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
- * Last changed in libpng 1.4.6 [ April 8, 2011]
+ * Last changed in libpng 1.5.4 [July 7, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,11 +11,10 @@
* and license in png.h
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
/* Turn on BGR-to-RGB mapping */
void PNGAPI
@@ -25,6 +24,7 @@
if (png_ptr == NULL)
return;
+
png_ptr->transformations |= PNG_BGR;
}
#endif
@@ -38,6 +38,7 @@
if (png_ptr == NULL)
return;
+
if (png_ptr->bit_depth == 16)
png_ptr->transformations |= PNG_SWAP_BYTES;
}
@@ -52,6 +53,7 @@
if (png_ptr == NULL)
return;
+
if (png_ptr->bit_depth < 8)
{
png_ptr->transformations |= PNG_PACK;
@@ -69,6 +71,7 @@
if (png_ptr == NULL)
return;
+
if (png_ptr->bit_depth < 8)
png_ptr->transformations |= PNG_PACKSWAP;
}
@@ -76,12 +79,13 @@
#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
void PNGAPI
-png_set_shift(png_structp png_ptr, png_color_8p true_bits)
+png_set_shift(png_structp png_ptr, png_const_color_8p true_bits)
{
png_debug(1, "in png_set_shift");
if (png_ptr == NULL)
return;
+
png_ptr->transformations |= PNG_SHIFT;
png_ptr->shift = *true_bits;
}
@@ -117,10 +121,13 @@
if (png_ptr == NULL)
return;
+
png_ptr->transformations |= PNG_FILLER;
png_ptr->filler = (png_uint_16)filler;
+
if (filler_loc == PNG_FILLER_AFTER)
png_ptr->flags |= PNG_FLAG_FILLER_AFTER;
+
else
png_ptr->flags &= ~PNG_FLAG_FILLER_AFTER;
@@ -135,7 +142,7 @@
}
/* Also I added this in libpng-1.0.2a (what happens when we expand
- * a less-than-8-bit grayscale to GA? */
+ * a less-than-8-bit grayscale to GA?) */
if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY && png_ptr->bit_depth >= 8)
{
@@ -151,6 +158,7 @@
if (png_ptr == NULL)
return;
+
png_set_filler(png_ptr, filler, filler_loc);
png_ptr->transformations |= PNG_ADD_ALPHA;
}
@@ -166,6 +174,7 @@
if (png_ptr == NULL)
return;
+
png_ptr->transformations |= PNG_SWAP_ALPHA;
}
#endif
@@ -179,6 +188,7 @@
if (png_ptr == NULL)
return;
+
png_ptr->transformations |= PNG_INVERT_ALPHA;
}
#endif
@@ -191,6 +201,7 @@
if (png_ptr == NULL)
return;
+
png_ptr->transformations |= PNG_INVERT_MONO;
}
@@ -206,8 +217,8 @@
if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
png_bytep rp = row;
- png_uint_32 i;
- png_uint_32 istop = row_info->rowbytes;
+ png_size_t i;
+ png_size_t istop = row_info->rowbytes;
for (i = 0; i < istop; i++)
{
@@ -215,36 +226,41 @@
rp++;
}
}
+
else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
row_info->bit_depth == 8)
{
png_bytep rp = row;
- png_uint_32 i;
- png_uint_32 istop = row_info->rowbytes;
+ png_size_t i;
+ png_size_t istop = row_info->rowbytes;
- for (i = 0; i < istop; i+=2)
+ for (i = 0; i < istop; i += 2)
{
*rp = (png_byte)(~(*rp));
- rp+=2;
+ rp += 2;
}
}
+
+#ifdef PNG_16BIT_SUPPORTED
else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
row_info->bit_depth == 16)
{
png_bytep rp = row;
- png_uint_32 i;
- png_uint_32 istop = row_info->rowbytes;
+ png_size_t i;
+ png_size_t istop = row_info->rowbytes;
- for (i = 0; i < istop; i+=4)
+ for (i = 0; i < istop; i += 4)
{
*rp = (png_byte)(~(*rp));
- *(rp+1) = (png_byte)(~(*(rp+1)));
- rp+=4;
+ *(rp + 1) = (png_byte)(~(*(rp + 1)));
+ rp += 4;
}
}
+#endif
}
#endif
+#ifdef PNG_16BIT_SUPPORTED
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
/* Swaps byte order on 16 bit depth images */
void /* PRIVATE */
@@ -252,8 +268,7 @@
{
png_debug(1, "in png_do_swap");
- if (
- row_info->bit_depth == 16)
+ if (row_info->bit_depth == 16)
{
png_bytep rp = row;
png_uint_32 i;
@@ -268,6 +283,7 @@
}
}
#endif
+#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
static PNG_CONST png_byte onebppswaptable[256] = {
@@ -381,19 +397,22 @@
{
png_debug(1, "in png_do_packswap");
- if (
- row_info->bit_depth < 8)
+ if (row_info->bit_depth < 8)
{
- png_bytep rp, end, table;
+ png_bytep rp;
+ png_const_bytep end, table;
end = row + row_info->rowbytes;
if (row_info->bit_depth == 1)
- table = (png_bytep)onebppswaptable;
+ table = onebppswaptable;
+
else if (row_info->bit_depth == 2)
- table = (png_bytep)twobppswaptable;
+ table = twobppswaptable;
+
else if (row_info->bit_depth == 4)
- table = (png_bytep)fourbppswaptable;
+ table = fourbppswaptable;
+
else
return;
@@ -405,158 +424,119 @@
#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
-/* Remove filler or alpha byte(s) */
+/* Remove a channel - this used to be 'png_do_strip_filler' but it used a
+ * somewhat weird combination of flags to determine what to do. All the calls
+ * to png_do_strip_filler are changed in 1.5.2 to call this instead with the
+ * correct arguments.
+ *
+ * The routine isn't general - the channel must be the channel at the start or
+ * end (not in the middle) of each pixel.
+ */
void /* PRIVATE */
-png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
+png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
{
- png_debug(1, "in png_do_strip_filler");
+ png_bytep sp = row; /* source pointer */
+ png_bytep dp = row; /* destination pointer */
+ png_bytep ep = row + row_info->rowbytes; /* One beyond end of row */
+ /* At the start sp will point to the first byte to copy and dp to where
+ * it is copied to. ep always points just beyond the end of the row, so
+ * the loop simply copies (channels-1) channels until sp reaches ep.
+ *
+ * at_start: 0 -- convert AG, XG, ARGB, XRGB, AAGG, XXGG, etc.
+ * nonzero -- convert GA, GX, RGBA, RGBX, GGAA, RRGGBBXX, etc.
+ */
+
+ /* GA, GX, XG cases */
+ if (row_info->channels == 2)
{
- png_bytep sp=row;
- png_bytep dp=row;
- png_uint_32 row_width=row_info->width;
- png_uint_32 i;
-
- if ((row_info->color_type == PNG_COLOR_TYPE_RGB ||
- (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
- (flags & PNG_FLAG_STRIP_ALPHA))) &&
- row_info->channels == 4)
+ if (row_info->bit_depth == 8)
{
- if (row_info->bit_depth == 8)
- {
- /* This converts from RGBX or RGBA to RGB */
- if (flags & PNG_FLAG_FILLER_AFTER)
- {
- dp+=3; sp+=4;
- for (i = 1; i < row_width; i++)
- {
- *dp++ = *sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- sp++;
- }
- }
- /* This converts from XRGB or ARGB to RGB */
- else
- {
- for (i = 0; i < row_width; i++)
- {
- sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- }
- }
- row_info->pixel_depth = 24;
- row_info->rowbytes = row_width * 3;
- }
- else /* if (row_info->bit_depth == 16) */
- {
- if (flags & PNG_FLAG_FILLER_AFTER)
- {
- /* This converts from RRGGBBXX or RRGGBBAA to RRGGBB */
- sp += 8; dp += 6;
- for (i = 1; i < row_width; i++)
- {
- /* This could be (although png_memcpy is probably slower):
- png_memcpy(dp, sp, 6);
- sp += 8;
- dp += 6;
- */
+ if (at_start) /* Skip initial filler */
+ ++sp;
+ else /* Skip initial channel and, for sp, the filler */
+ sp += 2, ++dp;
- *dp++ = *sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- sp += 2;
- }
- }
- else
- {
- /* This converts from XXRRGGBB or AARRGGBB to RRGGBB */
- for (i = 0; i < row_width; i++)
- {
- /* This could be (although png_memcpy is probably slower):
- png_memcpy(dp, sp, 6);
- sp += 8;
- dp += 6;
- */
+ /* For a 1 pixel wide image there is nothing to do */
+ while (sp < ep)
+ *dp++ = *sp, sp += 2;
- sp+=2;
- *dp++ = *sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- *dp++ = *sp++;
- }
- }
- row_info->pixel_depth = 48;
- row_info->rowbytes = row_width * 6;
- }
- row_info->channels = 3;
+ row_info->pixel_depth = 8;
}
- else if ((row_info->color_type == PNG_COLOR_TYPE_GRAY ||
- (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
- (flags & PNG_FLAG_STRIP_ALPHA))) &&
- row_info->channels == 2)
+
+ else if (row_info->bit_depth == 16)
{
- if (row_info->bit_depth == 8)
- {
- /* This converts from GX or GA to G */
- if (flags & PNG_FLAG_FILLER_AFTER)
- {
- for (i = 0; i < row_width; i++)
- {
- *dp++ = *sp++;
- sp++;
- }
- }
- /* This converts from XG or AG to G */
- else
- {
- for (i = 0; i < row_width; i++)
- {
- sp++;
- *dp++ = *sp++;
- }
- }
- row_info->pixel_depth = 8;
- row_info->rowbytes = row_width;
- }
- else /* if (row_info->bit_depth == 16) */
- {
- if (flags & PNG_FLAG_FILLER_AFTER)
- {
- /* This converts from GGXX or GGAA to GG */
- sp += 4; dp += 2;
- for (i = 1; i < row_width; i++)
- {
- *dp++ = *sp++;
- *dp++ = *sp++;
- sp += 2;
- }
- }
- else
- {
- /* This converts from XXGG or AAGG to GG */
- for (i = 0; i < row_width; i++)
- {
- sp += 2;
- *dp++ = *sp++;
- *dp++ = *sp++;
- }
- }
- row_info->pixel_depth = 16;
- row_info->rowbytes = row_width * 2;
- }
- row_info->channels = 1;
+ if (at_start) /* Skip initial filler */
+ sp += 2;
+ else /* Skip initial channel and, for sp, the filler */
+ sp += 4, dp += 2;
+
+ while (sp < ep)
+ *dp++ = *sp++, *dp++ = *sp, sp += 3;
+
+ row_info->pixel_depth = 16;
}
- if (flags & PNG_FLAG_STRIP_ALPHA)
- row_info->color_type &= ~PNG_COLOR_MASK_ALPHA;
+
+ else
+ return; /* bad bit depth */
+
+ row_info->channels = 1;
+
+ /* Finally fix the color type if it records an alpha channel */
+ if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ row_info->color_type = PNG_COLOR_TYPE_GRAY;
}
+
+ /* RGBA, RGBX, XRGB cases */
+ else if (row_info->channels == 4)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ if (at_start) /* Skip initial filler */
+ ++sp;
+ else /* Skip initial channels and, for sp, the filler */
+ sp += 4, dp += 3;
+
+ /* Note that the loop adds 3 to dp and 4 to sp each time. */
+ while (sp < ep)
+ *dp++ = *sp++, *dp++ = *sp++, *dp++ = *sp, sp += 2;
+
+ row_info->pixel_depth = 24;
+ }
+
+ else if (row_info->bit_depth == 16)
+ {
+ if (at_start) /* Skip initial filler */
+ sp += 2;
+ else /* Skip initial channels and, for sp, the filler */
+ sp += 8, dp += 6;
+
+ while (sp < ep)
+ {
+ /* Copy 6 bytes, skip 2 */
+ *dp++ = *sp++, *dp++ = *sp++;
+ *dp++ = *sp++, *dp++ = *sp++;
+ *dp++ = *sp++, *dp++ = *sp, sp += 3;
+ }
+
+ row_info->pixel_depth = 48;
+ }
+
+ else
+ return; /* bad bit depth */
+
+ row_info->channels = 3;
+
+ /* Finally fix the color type if it records an alpha channel */
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ row_info->color_type = PNG_COLOR_TYPE_RGB;
+ }
+
+ else
+ return; /* The filler channel has gone already */
+
+ /* Fix the rowbytes value. */
+ row_info->rowbytes = dp-row;
}
#endif
@@ -567,8 +547,7 @@
{
png_debug(1, "in png_do_bgr");
- if (
- (row_info->color_type & PNG_COLOR_MASK_COLOR))
+ if ((row_info->color_type & PNG_COLOR_MASK_COLOR))
{
png_uint_32 row_width = row_info->width;
if (row_info->bit_depth == 8)
@@ -585,6 +564,7 @@
*(rp + 2) = save;
}
}
+
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
png_bytep rp;
@@ -598,6 +578,8 @@
}
}
}
+
+#ifdef PNG_16BIT_SUPPORTED
else if (row_info->bit_depth == 16)
{
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
@@ -615,6 +597,7 @@
*(rp + 5) = save;
}
}
+
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
png_bytep rp;
@@ -631,12 +614,14 @@
}
}
}
+#endif
}
}
#endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
void PNGAPI
png_set_user_transform_info(png_structp png_ptr, png_voidp
user_transform_ptr, int user_transform_depth, int user_transform_channels)
@@ -645,33 +630,49 @@
if (png_ptr == NULL)
return;
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
png_ptr->user_transform_ptr = user_transform_ptr;
png_ptr->user_transform_depth = (png_byte)user_transform_depth;
png_ptr->user_transform_channels = (png_byte)user_transform_channels;
-#else
- if (user_transform_ptr || user_transform_depth || user_transform_channels)
- png_warning(png_ptr,
- "This version of libpng does not support user transform info");
-#endif
}
+#endif
/* This function returns a pointer to the user_transform_ptr associated with
* the user transform functions. The application should free any memory
* associated with this pointer before png_write_destroy and png_read_destroy
* are called.
*/
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
png_voidp PNGAPI
png_get_user_transform_ptr(png_const_structp png_ptr)
{
if (png_ptr == NULL)
return (NULL);
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+
return ((png_voidp)png_ptr->user_transform_ptr);
-#else
- return (NULL);
-#endif
}
+#endif
+
+#ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED
+png_uint_32 PNGAPI
+png_get_current_row_number(png_const_structp png_ptr)
+{
+ /* See the comments in png.h - this is the sub-image row when reading and
+ * interlaced image.
+ */
+ if (png_ptr != NULL)
+ return png_ptr->row_number;
+
+ return PNG_UINT_32_MAX; /* help the app not to fail silently */
+}
+
+png_byte PNGAPI
+png_get_current_pass_number(png_const_structp png_ptr)
+{
+ if (png_ptr != NULL)
+ return png_ptr->pass;
+ return 8; /* invalid */
+}
+#endif /* PNG_USER_TRANSFORM_INFO_SUPPORTED */
#endif /* PNG_READ_USER_TRANSFORM_SUPPORTED ||
PNG_WRITE_USER_TRANSFORM_SUPPORTED */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
diff --git a/pngwio.c b/pngwio.c
index 513a71a..95ffb34 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,8 +1,8 @@
/* pngwio.c - functions for data output
*
- * Last changed in libpng 1.4.0 [January 3, 2010]
- * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.0 [January 6, 2011]
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -18,11 +18,10 @@
* them at run time with png_set_write_fn(...).
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#ifdef PNG_WRITE_SUPPORTED
#include "pngpriv.h"
+#ifdef PNG_WRITE_SUPPORTED
+
/* Write the data to whatever output you are using. The default routine
* writes to a file pointer. Note that this routine sometimes gets called
* with very small lengths, so you should implement some kind of simple
@@ -31,10 +30,12 @@
*/
void /* PRIVATE */
-png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
+png_write_data(png_structp png_ptr, png_const_bytep data, png_size_t length)
{
+ /* NOTE: write_data_fn must not change the buffer! */
if (png_ptr->write_data_fn != NULL )
- (*(png_ptr->write_data_fn))(png_ptr, data, length);
+ (*(png_ptr->write_data_fn))(png_ptr, (png_bytep)data, length);
+
else
png_error(png_ptr, "Call to NULL write function");
}
@@ -46,14 +47,16 @@
* than changing the library.
*/
#ifndef USE_FAR_KEYWORD
-void PNGAPI
+void PNGCBAPI
png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
- png_uint_32 check;
+ png_size_t check;
if (png_ptr == NULL)
return;
+
check = fwrite(data, 1, length, (png_FILE_p)(png_ptr->io_ptr));
+
if (check != length)
png_error(png_ptr, "Write Error");
}
@@ -66,7 +69,7 @@
#define NEAR_BUF_SIZE 1024
#define MIN(a,b) (a <= b ? a : b)
-void PNGAPI
+void PNGCBAPI
png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_uint_32 check;
@@ -75,24 +78,29 @@
if (png_ptr == NULL)
return;
+
/* Check if data really is near. If so, use usual code. */
near_data = (png_byte *)CVT_PTR_NOCHECK(data);
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
+
if ((png_bytep)near_data == data)
{
check = fwrite(near_data, 1, length, io_ptr);
}
+
else
{
png_byte buf[NEAR_BUF_SIZE];
png_size_t written, remaining, err;
check = 0;
remaining = length;
+
do
{
written = MIN(NEAR_BUF_SIZE, remaining);
png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
err = fwrite(buf, 1, written, io_ptr);
+
if (err != written)
break;
@@ -104,6 +112,7 @@
}
while (remaining != 0);
}
+
if (check != length)
png_error(png_ptr, "Write Error");
}
@@ -123,17 +132,19 @@
(*(png_ptr->output_flush_fn))(png_ptr);
}
-#ifdef PNG_STDIO_SUPPORTED
-void PNGAPI
+# ifdef PNG_STDIO_SUPPORTED
+void PNGCBAPI
png_default_flush(png_structp png_ptr)
{
png_FILE_p io_ptr;
+
if (png_ptr == NULL)
return;
+
io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr));
fflush(io_ptr);
}
-#endif
+# endif
#endif
/* This function allows the application to supply new output functions for
@@ -167,7 +178,7 @@
*/
void PNGAPI
png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
- png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
+ png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
{
if (png_ptr == NULL)
return;
@@ -185,30 +196,32 @@
#endif
#ifdef PNG_WRITE_FLUSH_SUPPORTED
-#ifdef PNG_STDIO_SUPPORTED
+# ifdef PNG_STDIO_SUPPORTED
+
if (output_flush_fn != NULL)
png_ptr->output_flush_fn = output_flush_fn;
else
png_ptr->output_flush_fn = png_default_flush;
-#else
+
+# else
png_ptr->output_flush_fn = output_flush_fn;
-#endif
+# endif
#endif /* PNG_WRITE_FLUSH_SUPPORTED */
/* It is an error to read while writing a png file */
if (png_ptr->read_data_fn != NULL)
{
png_ptr->read_data_fn = NULL;
+
png_warning(png_ptr,
- "Attempted to set both read_data_fn and write_data_fn in");
- png_warning(png_ptr,
- "the same structure. Resetting read_data_fn to NULL");
+ "Can't set both read_data_fn and write_data_fn in the"
+ " same structure");
}
}
#ifdef USE_FAR_KEYWORD
-#ifdef _MSC_VER
+# ifdef _MSC_VER
void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
{
void *near_ptr;
@@ -236,6 +249,6 @@
return(near_ptr);
}
-# endif
-# endif
+# endif
+#endif
#endif /* PNG_WRITE_SUPPORTED */
diff --git a/pngwrite.c b/pngwrite.c
index 7dcb929..6d3fd4c 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
- * Last changed in libpng 1.4.8 [July 7, 2011]
+ * Last changed in libpng 1.5.7 [December 15, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,12 +11,10 @@
* and license in png.h
*/
-/* Get internal access to png.h */
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#ifdef PNG_WRITE_SUPPORTED
#include "pngpriv.h"
+#ifdef PNG_WRITE_SUPPORTED
+
/* Writes all the PNG information. This is the suggested way to use the
* library. If you have a new chunk to add, make a function to write it,
* and put it in the correct location here. If you want the chunk written
@@ -33,50 +31,46 @@
if (png_ptr == NULL || info_ptr == NULL)
return;
+
if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
{
/* Write PNG signature */
png_write_sig(png_ptr);
+
#ifdef PNG_MNG_FEATURES_SUPPORTED
if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) && \
- (png_ptr->mng_features_permitted))
+ (png_ptr->mng_features_permitted))
{
png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
png_ptr->mng_features_permitted = 0;
}
#endif
+
/* Write IHDR information. */
png_write_IHDR(png_ptr, info_ptr->width, info_ptr->height,
- info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type,
- info_ptr->filter_type,
+ info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type,
+ info_ptr->filter_type,
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- info_ptr->interlace_type);
+ info_ptr->interlace_type);
#else
- 0);
+ 0);
#endif
/* The rest of these check to see if the valid field has the appropriate
* flag set, and if it does, writes the chunk.
*/
#ifdef PNG_WRITE_gAMA_SUPPORTED
if (info_ptr->valid & PNG_INFO_gAMA)
- {
-# ifdef PNG_FLOATING_POINT_SUPPORTED
- png_write_gAMA(png_ptr, info_ptr->gamma);
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
- png_write_gAMA_fixed(png_ptr, info_ptr->int_gamma);
-# endif
-#endif
- }
+ png_write_gAMA_fixed(png_ptr, info_ptr->gamma);
#endif
#ifdef PNG_WRITE_sRGB_SUPPORTED
if (info_ptr->valid & PNG_INFO_sRGB)
png_write_sRGB(png_ptr, (int)info_ptr->srgb_intent);
#endif
+
#ifdef PNG_WRITE_iCCP_SUPPORTED
if (info_ptr->valid & PNG_INFO_iCCP)
png_write_iCCP(png_ptr, info_ptr->iccp_name, PNG_COMPRESSION_TYPE_BASE,
- info_ptr->iccp_profile, (int)info_ptr->iccp_proflen);
+ (png_charp)info_ptr->iccp_profile, (int)info_ptr->iccp_proflen);
#endif
#ifdef PNG_WRITE_sBIT_SUPPORTED
if (info_ptr->valid & PNG_INFO_sBIT)
@@ -84,24 +78,13 @@
#endif
#ifdef PNG_WRITE_cHRM_SUPPORTED
if (info_ptr->valid & PNG_INFO_cHRM)
- {
-#ifdef PNG_FLOATING_POINT_SUPPORTED
- png_write_cHRM(png_ptr,
- info_ptr->x_white, info_ptr->y_white,
- info_ptr->x_red, info_ptr->y_red,
- info_ptr->x_green, info_ptr->y_green,
- info_ptr->x_blue, info_ptr->y_blue);
-#else
-# ifdef PNG_FIXED_POINT_SUPPORTED
png_write_cHRM_fixed(png_ptr,
- info_ptr->int_x_white, info_ptr->int_y_white,
- info_ptr->int_x_red, info_ptr->int_y_red,
- info_ptr->int_x_green, info_ptr->int_y_green,
- info_ptr->int_x_blue, info_ptr->int_y_blue);
-# endif
+ info_ptr->x_white, info_ptr->y_white,
+ info_ptr->x_red, info_ptr->y_red,
+ info_ptr->x_green, info_ptr->y_green,
+ info_ptr->x_blue, info_ptr->y_blue);
#endif
- }
-#endif
+
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
if (info_ptr->unknown_chunks_num)
{
@@ -114,14 +97,18 @@
up++)
{
int keep = png_handle_as_unknown(png_ptr, up->name);
+
if (keep != PNG_HANDLE_CHUNK_NEVER &&
- up->location && !(up->location & PNG_HAVE_PLTE) &&
- !(up->location & PNG_HAVE_IDAT) &&
- ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
- (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
+ up->location &&
+ !(up->location & PNG_HAVE_PLTE) &&
+ !(up->location & PNG_HAVE_IDAT) &&
+ !(up->location & PNG_AFTER_IDAT) &&
+ ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
+ (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
{
if (up->size == 0)
png_warning(png_ptr, "Writing zero-length unknown chunk");
+
png_write_chunk(png_ptr, up->name, up->data, up->size);
}
}
@@ -147,7 +134,8 @@
if (info_ptr->valid & PNG_INFO_PLTE)
png_write_PLTE(png_ptr, info_ptr->palette,
- (png_uint_32)info_ptr->num_palette);
+ (png_uint_32)info_ptr->num_palette);
+
else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_error(png_ptr, "Valid palette required for paletted images");
@@ -157,59 +145,51 @@
#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
/* Invert the alpha channel (in tRNS) */
if ((png_ptr->transformations & PNG_INVERT_ALPHA) &&
- info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
int j;
for (j = 0; j<(int)info_ptr->num_trans; j++)
- info_ptr->trans_alpha[j] = (png_byte)(255 - info_ptr->trans_alpha[j]);
+ info_ptr->trans_alpha[j] =
+ (png_byte)(255 - info_ptr->trans_alpha[j]);
}
#endif
png_write_tRNS(png_ptr, info_ptr->trans_alpha, &(info_ptr->trans_color),
- info_ptr->num_trans, info_ptr->color_type);
+ info_ptr->num_trans, info_ptr->color_type);
}
#endif
#ifdef PNG_WRITE_bKGD_SUPPORTED
if (info_ptr->valid & PNG_INFO_bKGD)
png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type);
#endif
+
#ifdef PNG_WRITE_hIST_SUPPORTED
if (info_ptr->valid & PNG_INFO_hIST)
png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette);
#endif
+
#ifdef PNG_WRITE_oFFs_SUPPORTED
if (info_ptr->valid & PNG_INFO_oFFs)
png_write_oFFs(png_ptr, info_ptr->x_offset, info_ptr->y_offset,
- info_ptr->offset_unit_type);
+ info_ptr->offset_unit_type);
#endif
+
#ifdef PNG_WRITE_pCAL_SUPPORTED
if (info_ptr->valid & PNG_INFO_pCAL)
png_write_pCAL(png_ptr, info_ptr->pcal_purpose, info_ptr->pcal_X0,
- info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams,
- info_ptr->pcal_units, info_ptr->pcal_params);
+ info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams,
+ info_ptr->pcal_units, info_ptr->pcal_params);
#endif
-#ifdef PNG_sCAL_SUPPORTED
- if (info_ptr->valid & PNG_INFO_sCAL)
#ifdef PNG_WRITE_sCAL_SUPPORTED
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
- png_write_sCAL(png_ptr, (int)info_ptr->scal_unit,
- info_ptr->scal_pixel_width, info_ptr->scal_pixel_height);
-#else /* !FLOATING_POINT */
-#ifdef PNG_FIXED_POINT_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_sCAL)
png_write_sCAL_s(png_ptr, (int)info_ptr->scal_unit,
info_ptr->scal_s_width, info_ptr->scal_s_height);
-#endif /* FIXED_POINT */
-#endif /* FLOATING_POINT */
-#else /* !WRITE_sCAL */
- png_warning(png_ptr,
- "png_write_sCAL not supported; sCAL chunk not written");
-#endif /* WRITE_sCAL */
#endif /* sCAL */
#ifdef PNG_WRITE_pHYs_SUPPORTED
if (info_ptr->valid & PNG_INFO_pHYs)
png_write_pHYs(png_ptr, info_ptr->x_pixels_per_unit,
- info_ptr->y_pixels_per_unit, info_ptr->phys_unit_type);
+ info_ptr->y_pixels_per_unit, info_ptr->phys_unit_type);
#endif /* pHYs */
#ifdef PNG_WRITE_tIME_SUPPORTED
@@ -222,8 +202,8 @@
#ifdef PNG_WRITE_sPLT_SUPPORTED
if (info_ptr->valid & PNG_INFO_sPLT)
- for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
- png_write_sPLT(png_ptr, info_ptr->splt_palettes + i);
+ for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
+ png_write_sPLT(png_ptr, info_ptr->splt_palettes + i);
#endif /* sPLT */
#ifdef PNG_WRITE_TEXT_SUPPORTED
@@ -231,45 +211,47 @@
for (i = 0; i < info_ptr->num_text; i++)
{
png_debug2(2, "Writing header text chunk %d, type %d", i,
- info_ptr->text[i].compression);
+ info_ptr->text[i].compression);
/* An internationalized chunk? */
if (info_ptr->text[i].compression > 0)
{
#ifdef PNG_WRITE_iTXt_SUPPORTED
- /* Write international chunk */
- png_write_iTXt(png_ptr,
- info_ptr->text[i].compression,
- info_ptr->text[i].key,
- info_ptr->text[i].lang,
- info_ptr->text[i].lang_key,
- info_ptr->text[i].text);
+ /* Write international chunk */
+ png_write_iTXt(png_ptr,
+ info_ptr->text[i].compression,
+ info_ptr->text[i].key,
+ info_ptr->text[i].lang,
+ info_ptr->text[i].lang_key,
+ info_ptr->text[i].text);
#else
png_warning(png_ptr, "Unable to write international text");
#endif
/* Mark this chunk as written */
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
}
+
/* If we want a compressed text chunk */
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt)
{
#ifdef PNG_WRITE_zTXt_SUPPORTED
/* Write compressed chunk */
png_write_zTXt(png_ptr, info_ptr->text[i].key,
- info_ptr->text[i].text, 0,
- info_ptr->text[i].compression);
+ info_ptr->text[i].text, 0,
+ info_ptr->text[i].compression);
#else
png_warning(png_ptr, "Unable to write compressed text");
#endif
/* Mark this chunk as written */
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR;
}
+
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
{
#ifdef PNG_WRITE_tEXt_SUPPORTED
/* Write uncompressed chunk */
png_write_tEXt(png_ptr, info_ptr->text[i].key,
- info_ptr->text[i].text,
- 0);
+ info_ptr->text[i].text,
+ 0);
/* Mark this chunk as written */
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
#else
@@ -293,11 +275,12 @@
{
int keep = png_handle_as_unknown(png_ptr, up->name);
if (keep != PNG_HANDLE_CHUNK_NEVER &&
- up->location && (up->location & PNG_HAVE_PLTE) &&
- !(up->location & PNG_HAVE_IDAT) &&
- !(up->location & PNG_AFTER_IDAT) &&
- ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
- (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
+ up->location &&
+ (up->location & PNG_HAVE_PLTE) &&
+ !(up->location & PNG_HAVE_IDAT) &&
+ !(up->location & PNG_AFTER_IDAT) &&
+ ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
+ (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
{
png_write_chunk(png_ptr, up->name, up->data, up->size);
}
@@ -318,6 +301,7 @@
if (png_ptr == NULL)
return;
+
if (!(png_ptr->mode & PNG_HAVE_IDAT))
png_error(png_ptr, "No IDATs written into file");
@@ -330,8 +314,9 @@
#ifdef PNG_WRITE_tIME_SUPPORTED
/* Check to see if user has supplied a time chunk */
if ((info_ptr->valid & PNG_INFO_tIME) &&
- !(png_ptr->mode & PNG_WROTE_tIME))
+ !(png_ptr->mode & PNG_WROTE_tIME))
png_write_tIME(png_ptr, &(info_ptr->mod_time));
+
#endif
#ifdef PNG_WRITE_TEXT_SUPPORTED
/* Loop through comment chunks */
@@ -345,36 +330,38 @@
#ifdef PNG_WRITE_iTXt_SUPPORTED
/* Write international chunk */
png_write_iTXt(png_ptr,
- info_ptr->text[i].compression,
- info_ptr->text[i].key,
- info_ptr->text[i].lang,
- info_ptr->text[i].lang_key,
- info_ptr->text[i].text);
+ info_ptr->text[i].compression,
+ info_ptr->text[i].key,
+ info_ptr->text[i].lang,
+ info_ptr->text[i].lang_key,
+ info_ptr->text[i].text);
#else
png_warning(png_ptr, "Unable to write international text");
#endif
/* Mark this chunk as written */
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
}
+
else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt)
{
#ifdef PNG_WRITE_zTXt_SUPPORTED
/* Write compressed chunk */
png_write_zTXt(png_ptr, info_ptr->text[i].key,
- info_ptr->text[i].text, 0,
- info_ptr->text[i].compression);
+ info_ptr->text[i].text, 0,
+ info_ptr->text[i].compression);
#else
png_warning(png_ptr, "Unable to write compressed text");
#endif
/* Mark this chunk as written */
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR;
}
+
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
{
#ifdef PNG_WRITE_tEXt_SUPPORTED
/* Write uncompressed chunk */
png_write_tEXt(png_ptr, info_ptr->text[i].key,
- info_ptr->text[i].text, 0);
+ info_ptr->text[i].text, 0);
#else
png_warning(png_ptr, "Unable to write uncompressed text");
#endif
@@ -397,9 +384,10 @@
{
int keep = png_handle_as_unknown(png_ptr, up->name);
if (keep != PNG_HANDLE_CHUNK_NEVER &&
- up->location && (up->location & PNG_AFTER_IDAT) &&
- ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
- (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
+ up->location &&
+ (up->location & PNG_AFTER_IDAT) &&
+ ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
+ (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
{
png_write_chunk(png_ptr, up->name, up->data, up->size);
}
@@ -429,7 +417,7 @@
#ifdef PNG_CONVERT_tIME_SUPPORTED
/* "tm" structure is not supported on WindowsCE */
void PNGAPI
-png_convert_from_struct_tm(png_timep ptime, struct tm FAR * ttime)
+png_convert_from_struct_tm(png_timep ptime, PNG_CONST struct tm FAR * ttime)
{
png_debug(1, "in png_convert_from_struct_tm");
@@ -454,20 +442,22 @@
#endif
/* Initialize png_ptr structure, and allocate any memory needed */
-png_structp PNGAPI
-png_create_write_struct(png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn)
+PNG_FUNCTION(png_structp,PNGAPI
+png_create_write_struct,(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn),PNG_ALLOCATED)
{
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_write_struct_2(user_png_ver, error_ptr, error_fn,
- warn_fn, NULL, NULL, NULL));
+ warn_fn, NULL, NULL, NULL));
}
/* Alternate initialize png_ptr structure, and allocate any memory needed */
-png_structp PNGAPI
-png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
- png_malloc_ptr malloc_fn, png_free_ptr free_fn)
+static void png_reset_filter_heuristics(png_structp png_ptr); /* forward decl */
+
+PNG_FUNCTION(png_structp,PNGAPI
+png_create_write_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED)
{
#endif /* PNG_USER_MEM_SUPPORTED */
volatile int png_cleanup_needed = 0;
@@ -477,16 +467,15 @@
png_structp png_ptr;
#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
- jmp_buf jmpbuf;
+ jmp_buf tmp_jmpbuf;
#endif
#endif
- int i;
png_debug(1, "in png_create_write_struct");
#ifdef PNG_USER_MEM_SUPPORTED
png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
- (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
+ (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
#else
png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
#endif /* PNG_USER_MEM_SUPPORTED */
@@ -501,15 +490,16 @@
#ifdef PNG_SETJMP_SUPPORTED
/* Applications that neglect to set up their own setjmp() and then
- encounter a png_error() will longjmp here. Since the jmpbuf is
- then meaningless we abort instead of returning. */
+ * encounter a png_error() will longjmp here. Since the jmpbuf is
+ * then meaningless we abort instead of returning.
+ */
#ifdef USE_FAR_KEYWORD
- if (setjmp(jmpbuf))
+ if (setjmp(tmp_jmpbuf))
#else
if (setjmp(png_jmpbuf(png_ptr))) /* sets longjmp to match setjmp */
#endif
#ifdef USE_FAR_KEYWORD
- png_memcpy(png_jmpbuf(png_ptr), jmpbuf, png_sizeof(jmp_buf));
+ png_memcpy(png_jmpbuf(png_ptr), tmp_jmpbuf, png_sizeof(jmp_buf));
#endif
PNG_ABORT();
#endif
@@ -519,59 +509,20 @@
#endif /* PNG_USER_MEM_SUPPORTED */
png_set_error_fn(png_ptr, error_ptr, error_fn, warn_fn);
- if (user_png_ver)
- {
- i = 0;
- do
- {
- if (user_png_ver[i] != png_libpng_ver[i])
- png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
- } while (png_libpng_ver[i++]);
- }
-
- if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
- {
- /* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
- * we must recompile any applications that use any older library version.
- * For versions after libpng 1.0, we will be compatible, so we need
- * only check the first digit.
- */
- if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
- (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
- (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
- {
-#ifdef PNG_STDIO_SUPPORTED
- char msg[80];
- if (user_png_ver)
- {
- png_snprintf(msg, 80,
- "Application was compiled with png.h from libpng-%.20s",
- user_png_ver);
- png_warning(png_ptr, msg);
- }
- png_snprintf(msg, 80,
- "Application is running with png.c from libpng-%.20s",
- png_libpng_ver);
- png_warning(png_ptr, msg);
-#endif
-#ifdef PNG_ERROR_NUMBERS_SUPPORTED
- png_ptr->flags = 0;
-#endif
- png_warning(png_ptr,
- "Incompatible libpng version in application and library");
- png_cleanup_needed = 1;
- }
- }
+ if (!png_user_version_check(png_ptr, user_png_ver))
+ png_cleanup_needed = 1;
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
+
if (!png_cleanup_needed)
{
png_ptr->zbuf = (png_bytep)png_malloc_warn(png_ptr,
- png_ptr->zbuf_size);
+ png_ptr->zbuf_size);
if (png_ptr->zbuf == NULL)
png_cleanup_needed = 1;
}
+
if (png_cleanup_needed)
{
/* Clean up PNG structure and deallocate any memory. */
@@ -579,7 +530,7 @@
png_ptr->zbuf = NULL;
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)png_ptr,
- (png_free_ptr)free_fn, (png_voidp)mem_ptr);
+ (png_free_ptr)free_fn, (png_voidp)mem_ptr);
#else
png_destroy_struct((png_voidp)png_ptr);
#endif
@@ -589,8 +540,7 @@
png_set_write_fn(png_ptr, NULL, NULL, NULL);
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
- 1, NULL, NULL);
+ png_reset_filter_heuristics(png_ptr);
#endif
return (png_ptr);
@@ -604,7 +554,7 @@
*/
void PNGAPI
png_write_rows(png_structp png_ptr, png_bytepp row,
- png_uint_32 num_rows)
+ png_uint_32 num_rows)
{
png_uint_32 i; /* row counter */
png_bytepp rp; /* row pointer */
@@ -657,13 +607,16 @@
/* Called by user to write a row of image data */
void PNGAPI
-png_write_row(png_structp png_ptr, png_bytep row)
+png_write_row(png_structp png_ptr, png_const_bytep row)
{
+ /* 1.5.6: moved from png_struct to be a local structure: */
+ png_row_info row_info;
+
if (png_ptr == NULL)
return;
- png_debug2(1, "in png_write_row (row %lu, pass %d)",
- (unsigned long)png_ptr->row_number, png_ptr->pass);
+ png_debug2(1, "in png_write_row (row %u, pass %d)",
+ png_ptr->row_number, png_ptr->pass);
/* Initialize transformations and other stuff if first time */
if (png_ptr->row_number == 0 && png_ptr->pass == 0)
@@ -671,13 +624,14 @@
/* Make sure we wrote the header info */
if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
png_error(png_ptr,
- "png_write_info was never called before png_write_row");
+ "png_write_info was never called before png_write_row");
/* Check for transforms that have been set but were defined out */
#if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED)
if (png_ptr->transformations & PNG_INVERT_MONO)
png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined");
#endif
+
#if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED)
if (png_ptr->transformations & PNG_FILLER)
png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined");
@@ -688,18 +642,22 @@
png_warning(png_ptr,
"PNG_WRITE_PACKSWAP_SUPPORTED is not defined");
#endif
+
#if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED)
if (png_ptr->transformations & PNG_PACK)
png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined");
#endif
+
#if !defined(PNG_WRITE_SHIFT_SUPPORTED) && defined(PNG_READ_SHIFT_SUPPORTED)
if (png_ptr->transformations & PNG_SHIFT)
png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined");
#endif
+
#if !defined(PNG_WRITE_BGR_SUPPORTED) && defined(PNG_READ_BGR_SUPPORTED)
if (png_ptr->transformations & PNG_BGR)
png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined");
#endif
+
#if !defined(PNG_WRITE_SWAP_SUPPORTED) && defined(PNG_READ_SWAP_SUPPORTED)
if (png_ptr->transformations & PNG_SWAP_BYTES)
png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined");
@@ -721,6 +679,7 @@
return;
}
break;
+
case 1:
if ((png_ptr->row_number & 0x07) || png_ptr->width < 5)
{
@@ -728,6 +687,7 @@
return;
}
break;
+
case 2:
if ((png_ptr->row_number & 0x07) != 4)
{
@@ -735,6 +695,7 @@
return;
}
break;
+
case 3:
if ((png_ptr->row_number & 0x03) || png_ptr->width < 3)
{
@@ -742,6 +703,7 @@
return;
}
break;
+
case 4:
if ((png_ptr->row_number & 0x03) != 2)
{
@@ -749,6 +711,7 @@
return;
}
break;
+
case 5:
if ((png_ptr->row_number & 0x01) || png_ptr->width < 2)
{
@@ -756,6 +719,7 @@
return;
}
break;
+
case 6:
if (!(png_ptr->row_number & 0x01))
{
@@ -763,41 +727,39 @@
return;
}
break;
+
+ default: /* error: ignore it */
+ break;
}
}
#endif
/* Set up row info for transformations */
- png_ptr->row_info.color_type = png_ptr->color_type;
- png_ptr->row_info.width = png_ptr->usr_width;
- png_ptr->row_info.channels = png_ptr->usr_channels;
- png_ptr->row_info.bit_depth = png_ptr->usr_bit_depth;
- png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth *
- png_ptr->row_info.channels);
+ row_info.color_type = png_ptr->color_type;
+ row_info.width = png_ptr->usr_width;
+ row_info.channels = png_ptr->usr_channels;
+ row_info.bit_depth = png_ptr->usr_bit_depth;
+ row_info.pixel_depth = (png_byte)(row_info.bit_depth * row_info.channels);
+ row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width);
- png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
- png_ptr->row_info.width);
-
- png_debug1(3, "row_info->color_type = %d", png_ptr->row_info.color_type);
- png_debug1(3, "row_info->width = %lu",
- (unsigned long)png_ptr->row_info.width);
- png_debug1(3, "row_info->channels = %d", png_ptr->row_info.channels);
- png_debug1(3, "row_info->bit_depth = %d", png_ptr->row_info.bit_depth);
- png_debug1(3, "row_info->pixel_depth = %d", png_ptr->row_info.pixel_depth);
- png_debug1(3, "row_info->rowbytes = %lu", png_ptr->row_info.rowbytes);
+ png_debug1(3, "row_info->color_type = %d", row_info.color_type);
+ png_debug1(3, "row_info->width = %u", row_info.width);
+ png_debug1(3, "row_info->channels = %d", row_info.channels);
+ png_debug1(3, "row_info->bit_depth = %d", row_info.bit_depth);
+ png_debug1(3, "row_info->pixel_depth = %d", row_info.pixel_depth);
+ png_debug1(3, "row_info->rowbytes = %lu", (unsigned long)row_info.rowbytes);
/* Copy user's row into buffer, leaving room for filter byte. */
- png_memcpy(png_ptr->row_buf + 1, row, png_ptr->row_info.rowbytes);
+ png_memcpy(png_ptr->row_buf + 1, row, row_info.rowbytes);
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* Handle interlacing */
if (png_ptr->interlaced && png_ptr->pass < 6 &&
- (png_ptr->transformations & PNG_INTERLACE))
+ (png_ptr->transformations & PNG_INTERLACE))
{
- png_do_write_interlace(&(png_ptr->row_info),
- png_ptr->row_buf + 1, png_ptr->pass);
+ png_do_write_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass);
/* This should always get caught above, but still ... */
- if (!(png_ptr->row_info.width))
+ if (!(row_info.width))
{
png_write_finish_row(png_ptr);
return;
@@ -805,9 +767,18 @@
}
#endif
+#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
/* Handle other transformations */
if (png_ptr->transformations)
- png_do_write_transformations(png_ptr);
+ png_do_write_transformations(png_ptr, &row_info);
+#endif
+
+ /* At this point the row_info pixel depth must match the 'transformed' depth,
+ * which is also the output depth.
+ */
+ if (row_info.pixel_depth != png_ptr->pixel_depth ||
+ row_info.pixel_depth != png_ptr->transformed_pixel_depth)
+ png_error(png_ptr, "internal write transform logic error");
#ifdef PNG_MNG_FEATURES_SUPPORTED
/* Write filter_method 64 (intrapixel differencing) only if
@@ -820,15 +791,15 @@
* 5. The color_type is RGB or RGBA
*/
if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
- (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
+ (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
{
/* Intrapixel differencing */
- png_do_write_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_write_intrapixel(&row_info, png_ptr->row_buf + 1);
}
#endif
/* Find a filter if necessary, filter the row and write it out. */
- png_write_find_filter(png_ptr, &(png_ptr->row_info));
+ png_write_find_filter(png_ptr, &row_info);
if (png_ptr->write_row_fn != NULL)
(*(png_ptr->write_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
@@ -843,6 +814,7 @@
if (png_ptr == NULL)
return;
+
png_ptr->flush_dist = (nrows < 0 ? 0 : nrows);
}
@@ -856,6 +828,7 @@
if (png_ptr == NULL)
return;
+
/* We have already written out all of the data */
if (png_ptr->row_number >= png_ptr->num_rows)
return;
@@ -873,6 +846,7 @@
{
if (png_ptr->zstream.msg != NULL)
png_error(png_ptr, png_ptr->zstream.msg);
+
else
png_error(png_ptr, "zlib error");
}
@@ -880,22 +854,17 @@
if (!(png_ptr->zstream.avail_out))
{
/* Write the IDAT and reset the zlib output buffer */
- png_write_IDAT(png_ptr, png_ptr->zbuf,
- png_ptr->zbuf_size);
- png_ptr->zstream.next_out = png_ptr->zbuf;
- png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size);
wrote_IDAT = 1;
}
- } while(wrote_IDAT == 1);
+ } while (wrote_IDAT == 1);
/* If there is any data left to be output, write it into a new IDAT */
if (png_ptr->zbuf_size != png_ptr->zstream.avail_out)
{
/* Write the IDAT and reset the zlib output buffer */
png_write_IDAT(png_ptr, png_ptr->zbuf,
- png_ptr->zbuf_size - png_ptr->zstream.avail_out);
- png_ptr->zstream.next_out = png_ptr->zbuf;
- png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ png_ptr->zbuf_size - png_ptr->zstream.avail_out);
}
png_ptr->flush_rows = 0;
png_flush(png_ptr);
@@ -916,13 +885,7 @@
png_debug(1, "in png_destroy_write_struct");
if (png_ptr_ptr != NULL)
- {
png_ptr = *png_ptr_ptr;
-#ifdef PNG_USER_MEM_SUPPORTED
- free_fn = png_ptr->free_fn;
- mem_ptr = png_ptr->mem_ptr;
-#endif
- }
#ifdef PNG_USER_MEM_SUPPORTED
if (png_ptr != NULL)
@@ -939,20 +902,20 @@
{
if (png_ptr != NULL)
{
- png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- if (png_ptr->num_chunk_list)
- {
- png_free(png_ptr, png_ptr->chunk_list);
- png_ptr->num_chunk_list = 0;
- }
+ if (png_ptr->num_chunk_list)
+ {
+ png_free(png_ptr, png_ptr->chunk_list);
+ png_ptr->num_chunk_list = 0;
+ }
#endif
}
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn,
- (png_voidp)mem_ptr);
+ (png_voidp)mem_ptr);
#else
png_destroy_struct((png_voidp)info_ptr);
#endif
@@ -964,7 +927,7 @@
png_write_destroy(png_ptr);
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
- (png_voidp)mem_ptr);
+ (png_voidp)mem_ptr);
#else
png_destroy_struct((png_voidp)png_ptr);
#endif
@@ -981,7 +944,9 @@
jmp_buf tmp_jmp; /* Save jump buffer */
#endif
png_error_ptr error_fn;
+#ifdef PNG_WARNINGS_SUPPORTED
png_error_ptr warning_fn;
+#endif
png_voidp error_ptr;
#ifdef PNG_USER_MEM_SUPPORTED
png_free_ptr free_fn;
@@ -990,7 +955,8 @@
png_debug(1, "in png_write_destroy");
/* Free any memory zlib uses */
- deflateEnd(&png_ptr->zstream);
+ if (png_ptr->zlib_state != PNG_ZLIB_UNINITIALIZED)
+ deflateEnd(&png_ptr->zstream);
/* Free our memory. png_free checks NULL for us. */
png_free(png_ptr, png_ptr->zbuf);
@@ -1003,25 +969,22 @@
png_free(png_ptr, png_ptr->paeth_row);
#endif
-#ifdef PNG_TIME_RFC1123_SUPPORTED
- png_free(png_ptr, png_ptr->time_buffer);
-#endif
-
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- png_free(png_ptr, png_ptr->prev_filters);
- png_free(png_ptr, png_ptr->filter_weights);
- png_free(png_ptr, png_ptr->inv_filter_weights);
+ /* Use this to save a little code space, it doesn't free the filter_costs */
+ png_reset_filter_heuristics(png_ptr);
png_free(png_ptr, png_ptr->filter_costs);
png_free(png_ptr, png_ptr->inv_filter_costs);
#endif
#ifdef PNG_SETJMP_SUPPORTED
/* Reset structure */
- png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
+ png_memcpy(tmp_jmp, png_ptr->longjmp_buffer, png_sizeof(jmp_buf));
#endif
error_fn = png_ptr->error_fn;
+#ifdef PNG_WARNINGS_SUPPORTED
warning_fn = png_ptr->warning_fn;
+#endif
error_ptr = png_ptr->error_ptr;
#ifdef PNG_USER_MEM_SUPPORTED
free_fn = png_ptr->free_fn;
@@ -1030,14 +993,16 @@
png_memset(png_ptr, 0, png_sizeof(png_struct));
png_ptr->error_fn = error_fn;
+#ifdef PNG_WARNINGS_SUPPORTED
png_ptr->warning_fn = warning_fn;
+#endif
png_ptr->error_ptr = error_ptr;
#ifdef PNG_USER_MEM_SUPPORTED
png_ptr->free_fn = free_fn;
#endif
#ifdef PNG_SETJMP_SUPPORTED
- png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
+ png_memcpy(png_ptr->longjmp_buffer, tmp_jmp, png_sizeof(jmp_buf));
#endif
}
@@ -1049,10 +1014,12 @@
if (png_ptr == NULL)
return;
+
#ifdef PNG_MNG_FEATURES_SUPPORTED
if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
- (method == PNG_INTRAPIXEL_DIFFERENCING))
- method = PNG_FILTER_TYPE_BASE;
+ (method == PNG_INTRAPIXEL_DIFFERENCING))
+ method = PNG_FILTER_TYPE_BASE;
+
#endif
if (method == PNG_FILTER_TYPE_BASE)
{
@@ -1064,19 +1031,26 @@
case 7: png_warning(png_ptr, "Unknown row filter for method 0");
#endif /* PNG_WRITE_FILTER_SUPPORTED */
case PNG_FILTER_VALUE_NONE:
- png_ptr->do_filter = PNG_FILTER_NONE; break;
+ png_ptr->do_filter = PNG_FILTER_NONE; break;
+
#ifdef PNG_WRITE_FILTER_SUPPORTED
case PNG_FILTER_VALUE_SUB:
- png_ptr->do_filter = PNG_FILTER_SUB; break;
+ png_ptr->do_filter = PNG_FILTER_SUB; break;
+
case PNG_FILTER_VALUE_UP:
- png_ptr->do_filter = PNG_FILTER_UP; break;
+ png_ptr->do_filter = PNG_FILTER_UP; break;
+
case PNG_FILTER_VALUE_AVG:
- png_ptr->do_filter = PNG_FILTER_AVG; break;
+ png_ptr->do_filter = PNG_FILTER_AVG; break;
+
case PNG_FILTER_VALUE_PAETH:
- png_ptr->do_filter = PNG_FILTER_PAETH; break;
- default: png_ptr->do_filter = (png_byte)filters; break;
+ png_ptr->do_filter = PNG_FILTER_PAETH; break;
+
+ default:
+ png_ptr->do_filter = (png_byte)filters; break;
#else
- default: png_warning(png_ptr, "Unknown row filter for method 0");
+ default:
+ png_warning(png_ptr, "Unknown row filter for method 0");
#endif /* PNG_WRITE_FILTER_SUPPORTED */
}
@@ -1095,7 +1069,7 @@
if ((png_ptr->do_filter & PNG_FILTER_SUB) && png_ptr->sub_row == NULL)
{
png_ptr->sub_row = (png_bytep)png_malloc(png_ptr,
- (png_ptr->rowbytes + 1));
+ (png_ptr->rowbytes + 1));
png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
}
@@ -1104,12 +1078,14 @@
if (png_ptr->prev_row == NULL)
{
png_warning(png_ptr, "Can't add Up filter after starting");
- png_ptr->do_filter &= ~PNG_FILTER_UP;
+ png_ptr->do_filter = (png_byte)(png_ptr->do_filter &
+ ~PNG_FILTER_UP);
}
+
else
{
png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
- (png_ptr->rowbytes + 1));
+ (png_ptr->rowbytes + 1));
png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
}
}
@@ -1119,12 +1095,14 @@
if (png_ptr->prev_row == NULL)
{
png_warning(png_ptr, "Can't add Average filter after starting");
- png_ptr->do_filter &= ~PNG_FILTER_AVG;
+ png_ptr->do_filter = (png_byte)(png_ptr->do_filter &
+ ~PNG_FILTER_AVG);
}
+
else
{
png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
- (png_ptr->rowbytes + 1));
+ (png_ptr->rowbytes + 1));
png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
}
}
@@ -1137,10 +1115,11 @@
png_warning(png_ptr, "Can't add Paeth filter after starting");
png_ptr->do_filter &= (png_byte)(~PNG_FILTER_PAETH);
}
+
else
{
png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
- (png_ptr->rowbytes + 1));
+ (png_ptr->rowbytes + 1));
png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
}
}
@@ -1162,123 +1141,242 @@
* better compression.
*/
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* GRR 970116 */
-void PNGAPI
-png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
- int num_weights, png_doublep filter_weights,
- png_doublep filter_costs)
+/* Convenience reset API. */
+static void
+png_reset_filter_heuristics(png_structp png_ptr)
{
- int i;
+ /* Clear out any old values in the 'weights' - this must be done because if
+ * the app calls set_filter_heuristics multiple times with different
+ * 'num_weights' values we would otherwise potentially have wrong sized
+ * arrays.
+ */
+ png_ptr->num_prev_filters = 0;
+ png_ptr->heuristic_method = PNG_FILTER_HEURISTIC_UNWEIGHTED;
+ if (png_ptr->prev_filters != NULL)
+ {
+ png_bytep old = png_ptr->prev_filters;
+ png_ptr->prev_filters = NULL;
+ png_free(png_ptr, old);
+ }
+ if (png_ptr->filter_weights != NULL)
+ {
+ png_uint_16p old = png_ptr->filter_weights;
+ png_ptr->filter_weights = NULL;
+ png_free(png_ptr, old);
+ }
- png_debug(1, "in png_set_filter_heuristics");
+ if (png_ptr->inv_filter_weights != NULL)
+ {
+ png_uint_16p old = png_ptr->inv_filter_weights;
+ png_ptr->inv_filter_weights = NULL;
+ png_free(png_ptr, old);
+ }
+ /* Leave the filter_costs - this array is fixed size. */
+}
+
+static int
+png_init_filter_heuristics(png_structp png_ptr, int heuristic_method,
+ int num_weights)
+{
if (png_ptr == NULL)
- return;
- if (heuristic_method >= PNG_FILTER_HEURISTIC_LAST)
- {
- png_warning(png_ptr, "Unknown filter heuristic method");
- return;
- }
+ return 0;
- if (heuristic_method == PNG_FILTER_HEURISTIC_DEFAULT)
- {
- heuristic_method = PNG_FILTER_HEURISTIC_UNWEIGHTED;
- }
+ /* Clear out the arrays */
+ png_reset_filter_heuristics(png_ptr);
- if (num_weights < 0 || filter_weights == NULL ||
- heuristic_method == PNG_FILTER_HEURISTIC_UNWEIGHTED)
+ /* Check arguments; the 'reset' function makes the correct settings for the
+ * unweighted case, but we must handle the weight case by initializing the
+ * arrays for the caller.
+ */
+ if (heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
- num_weights = 0;
- }
+ int i;
- png_ptr->num_prev_filters = (png_byte)num_weights;
- png_ptr->heuristic_method = (png_byte)heuristic_method;
-
- if (num_weights > 0)
- {
- if (png_ptr->prev_filters == NULL)
+ if (num_weights > 0)
{
png_ptr->prev_filters = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(png_sizeof(png_byte) * num_weights));
+ (png_uint_32)(png_sizeof(png_byte) * num_weights));
/* To make sure that the weighting starts out fairly */
for (i = 0; i < num_weights; i++)
{
png_ptr->prev_filters[i] = 255;
}
- }
- if (png_ptr->filter_weights == NULL)
- {
png_ptr->filter_weights = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)(png_sizeof(png_uint_16) * num_weights));
+ (png_uint_32)(png_sizeof(png_uint_16) * num_weights));
png_ptr->inv_filter_weights = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)(png_sizeof(png_uint_16) * num_weights));
+ (png_uint_32)(png_sizeof(png_uint_16) * num_weights));
+
for (i = 0; i < num_weights; i++)
{
png_ptr->inv_filter_weights[i] =
png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
}
+
+ /* Safe to set this now */
+ png_ptr->num_prev_filters = (png_byte)num_weights;
}
- for (i = 0; i < num_weights; i++)
+ /* If, in the future, there are other filter methods, this would
+ * need to be based on png_ptr->filter.
+ */
+ if (png_ptr->filter_costs == NULL)
{
- if (filter_weights[i] < 0.0)
- {
- png_ptr->inv_filter_weights[i] =
- png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
- }
- else
- {
- png_ptr->inv_filter_weights[i] =
- (png_uint_16)((double)PNG_WEIGHT_FACTOR*filter_weights[i]+0.5);
- png_ptr->filter_weights[i] =
- (png_uint_16)((double)PNG_WEIGHT_FACTOR/filter_weights[i]+0.5);
- }
+ png_ptr->filter_costs = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)(png_sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST));
+
+ png_ptr->inv_filter_costs = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)(png_sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST));
}
- }
-
- /* If, in the future, there are other filter methods, this would
- * need to be based on png_ptr->filter.
- */
- if (png_ptr->filter_costs == NULL)
- {
- png_ptr->filter_costs = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)(png_sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST));
-
- png_ptr->inv_filter_costs = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)(png_sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST));
for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
{
png_ptr->inv_filter_costs[i] =
png_ptr->filter_costs[i] = PNG_COST_FACTOR;
}
- }
- /* Here is where we set the relative costs of the different filters. We
- * should take the desired compression level into account when setting
- * the costs, so that Paeth, for instance, has a high relative cost at low
- * compression levels, while it has a lower relative cost at higher
- * compression settings. The filter types are in order of increasing
- * relative cost, so it would be possible to do this with an algorithm.
- */
- for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
+ /* All the arrays are inited, safe to set this: */
+ png_ptr->heuristic_method = PNG_FILTER_HEURISTIC_WEIGHTED;
+
+ /* Return the 'ok' code. */
+ return 1;
+ }
+ else if (heuristic_method == PNG_FILTER_HEURISTIC_DEFAULT ||
+ heuristic_method == PNG_FILTER_HEURISTIC_UNWEIGHTED)
{
- if (filter_costs == NULL || filter_costs[i] < 0.0)
+ return 1;
+ }
+ else
+ {
+ png_warning(png_ptr, "Unknown filter heuristic method");
+ return 0;
+ }
+}
+
+/* Provide floating and fixed point APIs */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
+ int num_weights, png_const_doublep filter_weights,
+ png_const_doublep filter_costs)
+{
+ png_debug(1, "in png_set_filter_heuristics");
+
+ /* The internal API allocates all the arrays and ensures that the elements of
+ * those arrays are set to the default value.
+ */
+ if (!png_init_filter_heuristics(png_ptr, heuristic_method, num_weights))
+ return;
+
+ /* If using the weighted method copy in the weights. */
+ if (heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int i;
+ for (i = 0; i < num_weights; i++)
{
- png_ptr->inv_filter_costs[i] =
- png_ptr->filter_costs[i] = PNG_COST_FACTOR;
+ if (filter_weights[i] <= 0.0)
+ {
+ png_ptr->inv_filter_weights[i] =
+ png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
+ }
+
+ else
+ {
+ png_ptr->inv_filter_weights[i] =
+ (png_uint_16)(PNG_WEIGHT_FACTOR*filter_weights[i]+.5);
+
+ png_ptr->filter_weights[i] =
+ (png_uint_16)(PNG_WEIGHT_FACTOR/filter_weights[i]+.5);
+ }
}
- else if (filter_costs[i] >= 1.0)
+
+ /* Here is where we set the relative costs of the different filters. We
+ * should take the desired compression level into account when setting
+ * the costs, so that Paeth, for instance, has a high relative cost at low
+ * compression levels, while it has a lower relative cost at higher
+ * compression settings. The filter types are in order of increasing
+ * relative cost, so it would be possible to do this with an algorithm.
+ */
+ for (i = 0; i < PNG_FILTER_VALUE_LAST; i++) if (filter_costs[i] >= 1.0)
{
png_ptr->inv_filter_costs[i] =
- (png_uint_16)((double)PNG_COST_FACTOR / filter_costs[i] + 0.5);
+ (png_uint_16)(PNG_COST_FACTOR / filter_costs[i] + .5);
+
png_ptr->filter_costs[i] =
- (png_uint_16)((double)PNG_COST_FACTOR * filter_costs[i] + 0.5);
+ (png_uint_16)(PNG_COST_FACTOR * filter_costs[i] + .5);
}
}
}
+#endif /* FLOATING_POINT */
+
+#ifdef PNG_FIXED_POINT_SUPPORTED
+void PNGAPI
+png_set_filter_heuristics_fixed(png_structp png_ptr, int heuristic_method,
+ int num_weights, png_const_fixed_point_p filter_weights,
+ png_const_fixed_point_p filter_costs)
+{
+ png_debug(1, "in png_set_filter_heuristics_fixed");
+
+ /* The internal API allocates all the arrays and ensures that the elements of
+ * those arrays are set to the default value.
+ */
+ if (!png_init_filter_heuristics(png_ptr, heuristic_method, num_weights))
+ return;
+
+ /* If using the weighted method copy in the weights. */
+ if (heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int i;
+ for (i = 0; i < num_weights; i++)
+ {
+ if (filter_weights[i] <= 0)
+ {
+ png_ptr->inv_filter_weights[i] =
+ png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
+ }
+
+ else
+ {
+ png_ptr->inv_filter_weights[i] = (png_uint_16)
+ ((PNG_WEIGHT_FACTOR*filter_weights[i]+PNG_FP_HALF)/PNG_FP_1);
+
+ png_ptr->filter_weights[i] = (png_uint_16)((PNG_WEIGHT_FACTOR*
+ PNG_FP_1+(filter_weights[i]/2))/filter_weights[i]);
+ }
+ }
+
+ /* Here is where we set the relative costs of the different filters. We
+ * should take the desired compression level into account when setting
+ * the costs, so that Paeth, for instance, has a high relative cost at low
+ * compression levels, while it has a lower relative cost at higher
+ * compression settings. The filter types are in order of increasing
+ * relative cost, so it would be possible to do this with an algorithm.
+ */
+ for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
+ if (filter_costs[i] >= PNG_FP_1)
+ {
+ png_uint_32 tmp;
+
+ /* Use a 32 bit unsigned temporary here because otherwise the
+ * intermediate value will be a 32 bit *signed* integer (ANSI rules)
+ * and this will get the wrong answer on division.
+ */
+ tmp = PNG_COST_FACTOR*PNG_FP_1 + (filter_costs[i]/2);
+ tmp /= filter_costs[i];
+
+ png_ptr->inv_filter_costs[i] = (png_uint_16)tmp;
+
+ tmp = PNG_COST_FACTOR * filter_costs[i] + PNG_FP_HALF;
+ tmp /= PNG_FP_1;
+
+ png_ptr->filter_costs[i] = (png_uint_16)tmp;
+ }
+ }
+}
+#endif /* FIXED_POINT */
#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
void PNGAPI
@@ -1288,6 +1386,7 @@
if (png_ptr == NULL)
return;
+
png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_LEVEL;
png_ptr->zlib_level = level;
}
@@ -1299,6 +1398,7 @@
if (png_ptr == NULL)
return;
+
png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL;
png_ptr->zlib_mem_level = mem_level;
}
@@ -1310,26 +1410,34 @@
if (png_ptr == NULL)
return;
+
png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_STRATEGY;
png_ptr->zlib_strategy = strategy;
}
+/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
+ * smaller value of window_bits if it can do so safely.
+ */
void PNGAPI
png_set_compression_window_bits(png_structp png_ptr, int window_bits)
{
if (png_ptr == NULL)
return;
+
if (window_bits > 15)
png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");
+
else if (window_bits < 8)
png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");
+
#ifndef WBITS_8_OK
/* Avoid libpng bug with 256-byte windows */
if (window_bits == 8)
- {
- png_warning(png_ptr, "Compression window is being reset to 512");
- window_bits = 9;
- }
+ {
+ png_warning(png_ptr, "Compression window is being reset to 512");
+ window_bits = 9;
+ }
+
#endif
png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS;
png_ptr->zlib_window_bits = window_bits;
@@ -1342,29 +1450,116 @@
if (png_ptr == NULL)
return;
+
if (method != 8)
png_warning(png_ptr, "Only compression method 8 is supported by PNG");
+
png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_METHOD;
png_ptr->zlib_method = method;
}
+/* The following were added to libpng-1.5.4 */
+#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+void PNGAPI
+png_set_text_compression_level(png_structp png_ptr, int level)
+{
+ png_debug(1, "in png_set_text_compression_level");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->flags |= PNG_FLAG_ZTXT_CUSTOM_LEVEL;
+ png_ptr->zlib_text_level = level;
+}
+
+void PNGAPI
+png_set_text_compression_mem_level(png_structp png_ptr, int mem_level)
+{
+ png_debug(1, "in png_set_text_compression_mem_level");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->flags |= PNG_FLAG_ZTXT_CUSTOM_MEM_LEVEL;
+ png_ptr->zlib_text_mem_level = mem_level;
+}
+
+void PNGAPI
+png_set_text_compression_strategy(png_structp png_ptr, int strategy)
+{
+ png_debug(1, "in png_set_text_compression_strategy");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->flags |= PNG_FLAG_ZTXT_CUSTOM_STRATEGY;
+ png_ptr->zlib_text_strategy = strategy;
+}
+
+/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
+ * smaller value of window_bits if it can do so safely.
+ */
+void PNGAPI
+png_set_text_compression_window_bits(png_structp png_ptr, int window_bits)
+{
+ if (png_ptr == NULL)
+ return;
+
+ if (window_bits > 15)
+ png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");
+
+ else if (window_bits < 8)
+ png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");
+
+#ifndef WBITS_8_OK
+ /* Avoid libpng bug with 256-byte windows */
+ if (window_bits == 8)
+ {
+ png_warning(png_ptr, "Text compression window is being reset to 512");
+ window_bits = 9;
+ }
+
+#endif
+ png_ptr->flags |= PNG_FLAG_ZTXT_CUSTOM_WINDOW_BITS;
+ png_ptr->zlib_text_window_bits = window_bits;
+}
+
+void PNGAPI
+png_set_text_compression_method(png_structp png_ptr, int method)
+{
+ png_debug(1, "in png_set_text_compression_method");
+
+ if (png_ptr == NULL)
+ return;
+
+ if (method != 8)
+ png_warning(png_ptr, "Only compression method 8 is supported by PNG");
+
+ png_ptr->flags |= PNG_FLAG_ZTXT_CUSTOM_METHOD;
+ png_ptr->zlib_text_method = method;
+}
+#endif /* PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED */
+/* end of API added to libpng-1.5.4 */
+
void PNGAPI
png_set_write_status_fn(png_structp png_ptr, png_write_status_ptr write_row_fn)
{
if (png_ptr == NULL)
return;
+
png_ptr->write_row_fn = write_row_fn;
}
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
void PNGAPI
png_set_write_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
- write_user_transform_fn)
+ write_user_transform_fn)
{
png_debug(1, "in png_set_write_user_transform_fn");
if (png_ptr == NULL)
return;
+
png_ptr->transformations |= PNG_USER_TRANSFORM;
png_ptr->write_user_transform_fn = write_user_transform_fn;
}
@@ -1374,7 +1569,7 @@
#ifdef PNG_INFO_IMAGE_SUPPORTED
void PNGAPI
png_write_png(png_structp png_ptr, png_infop info_ptr,
- int transforms, voidp params)
+ int transforms, voidp params)
{
if (png_ptr == NULL || info_ptr == NULL)
return;
@@ -1395,7 +1590,7 @@
* as appropriate to correctly scale the image.
*/
if ((transforms & PNG_TRANSFORM_SHIFT)
- && (info_ptr->valid & PNG_INFO_sBIT))
+ && (info_ptr->valid & PNG_INFO_sBIT))
png_set_shift(png_ptr, &info_ptr->sig_bit);
#endif
@@ -1415,6 +1610,7 @@
/* Pack XRGB/RGBX/ARGB/RGBA into RGB (4 channels -> 3 channels) */
if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER)
png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
+
else if (transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE)
png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
#endif
diff --git a/pngwtran.c b/pngwtran.c
index 2925a93..96608ef 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,8 +1,8 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
- * Last changed in libpng 1.4.1 [February 25, 2010]
- * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.6 [November 3, 2011]
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -11,16 +11,16 @@
* and license in png.h
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#ifdef PNG_WRITE_SUPPORTED
#include "pngpriv.h"
+#ifdef PNG_WRITE_SUPPORTED
+
+#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
/* Transform the data according to the user's wishes. The order of
* transformations is significant.
*/
void /* PRIVATE */
-png_do_write_transformations(png_structp png_ptr)
+png_do_write_transformations(png_structp png_ptr, png_row_infop row_info)
{
png_debug(1, "in png_do_write_transformations");
@@ -30,56 +30,65 @@
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
if (png_ptr->transformations & PNG_USER_TRANSFORM)
if (png_ptr->write_user_transform_fn != NULL)
- (*(png_ptr->write_user_transform_fn)) /* User write transform
+ (*(png_ptr->write_user_transform_fn)) /* User write transform
function */
- (png_ptr, /* png_ptr */
- &(png_ptr->row_info), /* row_info: */
- /* png_uint_32 width; width of row */
- /* png_uint_32 rowbytes; number of bytes in row */
- /* png_byte color_type; color type of pixels */
- /* png_byte bit_depth; bit depth of samples */
- /* png_byte channels; number of channels (1-4) */
- /* png_byte pixel_depth; bits per pixel (depth*channels) */
- png_ptr->row_buf + 1); /* start of pixel data for row */
+ (png_ptr, /* png_ptr */
+ row_info, /* row_info: */
+ /* png_uint_32 width; width of row */
+ /* png_size_t rowbytes; number of bytes in row */
+ /* png_byte color_type; color type of pixels */
+ /* png_byte bit_depth; bit depth of samples */
+ /* png_byte channels; number of channels (1-4) */
+ /* png_byte pixel_depth; bits per pixel (depth*channels) */
+ png_ptr->row_buf + 1); /* start of pixel data for row */
#endif
+
#ifdef PNG_WRITE_FILLER_SUPPORTED
if (png_ptr->transformations & PNG_FILLER)
- png_do_strip_filler(&(png_ptr->row_info), png_ptr->row_buf + 1,
- png_ptr->flags);
+ png_do_strip_channel(row_info, png_ptr->row_buf + 1,
+ !(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
#endif
+
#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
if (png_ptr->transformations & PNG_PACKSWAP)
- png_do_packswap(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_packswap(row_info, png_ptr->row_buf + 1);
#endif
+
#ifdef PNG_WRITE_PACK_SUPPORTED
if (png_ptr->transformations & PNG_PACK)
- png_do_pack(&(png_ptr->row_info), png_ptr->row_buf + 1,
- (png_uint_32)png_ptr->bit_depth);
+ png_do_pack(row_info, png_ptr->row_buf + 1,
+ (png_uint_32)png_ptr->bit_depth);
#endif
+
#ifdef PNG_WRITE_SWAP_SUPPORTED
if (png_ptr->transformations & PNG_SWAP_BYTES)
- png_do_swap(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_swap(row_info, png_ptr->row_buf + 1);
#endif
+
#ifdef PNG_WRITE_SHIFT_SUPPORTED
if (png_ptr->transformations & PNG_SHIFT)
- png_do_shift(&(png_ptr->row_info), png_ptr->row_buf + 1,
- &(png_ptr->shift));
+ png_do_shift(row_info, png_ptr->row_buf + 1,
+ &(png_ptr->shift));
#endif
+
#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
if (png_ptr->transformations & PNG_SWAP_ALPHA)
- png_do_write_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_write_swap_alpha(row_info, png_ptr->row_buf + 1);
#endif
+
#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
if (png_ptr->transformations & PNG_INVERT_ALPHA)
- png_do_write_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_write_invert_alpha(row_info, png_ptr->row_buf + 1);
#endif
+
#ifdef PNG_WRITE_BGR_SUPPORTED
if (png_ptr->transformations & PNG_BGR)
- png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_bgr(row_info, png_ptr->row_buf + 1);
#endif
+
#ifdef PNG_WRITE_INVERT_SUPPORTED
if (png_ptr->transformations & PNG_INVERT_MONO)
- png_do_invert(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ png_do_invert(row_info, png_ptr->row_buf + 1);
#endif
}
@@ -114,9 +123,12 @@
{
if (*sp != 0)
v |= mask;
+
sp++;
+
if (mask > 1)
mask >>= 1;
+
else
{
mask = 0x80;
@@ -125,10 +137,13 @@
v = 0;
}
}
+
if (mask != 0x80)
*dp = (png_byte)v;
+
break;
}
+
case 2:
{
png_bytep sp, dp;
@@ -140,12 +155,14 @@
dp = row;
shift = 6;
v = 0;
+
for (i = 0; i < row_width; i++)
{
png_byte value;
value = (png_byte)(*sp & 0x03);
v |= (value << shift);
+
if (shift == 0)
{
shift = 6;
@@ -153,14 +170,19 @@
dp++;
v = 0;
}
+
else
shift -= 2;
+
sp++;
}
+
if (shift != 6)
*dp = (png_byte)v;
+
break;
}
+
case 4:
{
png_bytep sp, dp;
@@ -172,6 +194,7 @@
dp = row;
shift = 4;
v = 0;
+
for (i = 0; i < row_width; i++)
{
png_byte value;
@@ -186,23 +209,27 @@
dp++;
v = 0;
}
+
else
shift -= 4;
sp++;
}
+
if (shift != 4)
*dp = (png_byte)v;
+
break;
}
default:
break;
}
+
row_info->bit_depth = (png_byte)bit_depth;
row_info->pixel_depth = (png_byte)(bit_depth * row_info->channels);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
- row_info->width);
+ row_info->width);
}
}
#endif
@@ -216,12 +243,12 @@
* data to 0 to 15.
*/
void /* PRIVATE */
-png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
+png_do_shift(png_row_infop row_info, png_bytep row,
+ png_const_color_8p bit_depth)
{
png_debug(1, "in png_do_shift");
- if (
- row_info->color_type != PNG_COLOR_TYPE_PALETTE)
+ if (row_info->color_type != PNG_COLOR_TYPE_PALETTE)
{
int shift_start[4], shift_dec[4];
int channels = 0;
@@ -231,19 +258,23 @@
shift_start[channels] = row_info->bit_depth - bit_depth->red;
shift_dec[channels] = bit_depth->red;
channels++;
+
shift_start[channels] = row_info->bit_depth - bit_depth->green;
shift_dec[channels] = bit_depth->green;
channels++;
+
shift_start[channels] = row_info->bit_depth - bit_depth->blue;
shift_dec[channels] = bit_depth->blue;
channels++;
}
+
else
{
shift_start[channels] = row_info->bit_depth - bit_depth->gray;
shift_dec[channels] = bit_depth->gray;
channels++;
}
+
if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
{
shift_start[channels] = row_info->bit_depth - bit_depth->alpha;
@@ -255,14 +286,16 @@
if (row_info->bit_depth < 8)
{
png_bytep bp = row;
- png_uint_32 i;
+ png_size_t i;
png_byte mask;
- png_uint_32 row_bytes = row_info->rowbytes;
+ png_size_t row_bytes = row_info->rowbytes;
if (bit_depth->gray == 1 && row_info->bit_depth == 2)
mask = 0x55;
+
else if (row_info->bit_depth == 4 && bit_depth->gray == 3)
mask = 0x11;
+
else
mask = 0xff;
@@ -273,15 +306,18 @@
v = *bp;
*bp = 0;
+
for (j = shift_start[0]; j > -shift_dec[0]; j -= shift_dec[0])
{
if (j > 0)
*bp |= (png_byte)((v << j) & 0xff);
+
else
*bp |= (png_byte)((v >> (-j)) & mask);
}
}
}
+
else if (row_info->bit_depth == 8)
{
png_bytep bp = row;
@@ -297,15 +333,18 @@
v = *bp;
*bp = 0;
+
for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c])
{
if (j > 0)
*bp |= (png_byte)((v << j) & 0xff);
+
else
*bp |= (png_byte)((v >> (-j)) & 0xff);
}
}
}
+
else
{
png_bytep bp;
@@ -320,10 +359,12 @@
v = (png_uint_16)(((png_uint_16)(*bp) << 8) + *(bp + 1));
value = 0;
+
for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c])
{
if (j > 0)
value |= (png_uint_16)((v << j) & (png_uint_16)0xffff);
+
else
value |= (png_uint_16)((v >> (-j)) & (png_uint_16)0xffff);
}
@@ -344,12 +385,13 @@
{
if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
- /* This converts from ARGB to RGBA */
if (row_info->bit_depth == 8)
{
+ /* This converts from ARGB to RGBA */
png_bytep sp, dp;
png_uint_32 i;
png_uint_32 row_width = row_info->width;
+
for (i = 0, sp = dp = row; i < row_width; i++)
{
png_byte save = *(sp++);
@@ -359,9 +401,11 @@
*(dp++) = save;
}
}
- /* This converts from AARRGGBB to RRGGBBAA */
+
+#ifdef PNG_WRITE_16BIT_SUPPORTED
else
{
+ /* This converts from AARRGGBB to RRGGBBAA */
png_bytep sp, dp;
png_uint_32 i;
png_uint_32 row_width = row_info->width;
@@ -381,12 +425,14 @@
*(dp++) = save[1];
}
}
+#endif /* PNG_WRITE_16BIT_SUPPORTED */
}
+
else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
{
- /* This converts from AG to GA */
if (row_info->bit_depth == 8)
{
+ /* This converts from AG to GA */
png_bytep sp, dp;
png_uint_32 i;
png_uint_32 row_width = row_info->width;
@@ -398,9 +444,11 @@
*(dp++) = save;
}
}
- /* This converts from AAGG to GGAA */
+
+#ifdef PNG_WRITE_16BIT_SUPPORTED
else
{
+ /* This converts from AAGG to GGAA */
png_bytep sp, dp;
png_uint_32 i;
png_uint_32 row_width = row_info->width;
@@ -416,6 +464,7 @@
*(dp++) = save[1];
}
}
+#endif /* PNG_WRITE_16BIT_SUPPORTED */
}
}
}
@@ -430,12 +479,13 @@
{
if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
- /* This inverts the alpha channel in RGBA */
if (row_info->bit_depth == 8)
{
+ /* This inverts the alpha channel in RGBA */
png_bytep sp, dp;
png_uint_32 i;
png_uint_32 row_width = row_info->width;
+
for (i = 0, sp = dp = row; i < row_width; i++)
{
/* Does nothing
@@ -447,9 +497,11 @@
*(dp++) = (png_byte)(255 - *(sp++));
}
}
- /* This inverts the alpha channel in RRGGBBAA */
+
+#ifdef PNG_WRITE_16BIT_SUPPORTED
else
{
+ /* This inverts the alpha channel in RRGGBBAA */
png_bytep sp, dp;
png_uint_32 i;
png_uint_32 row_width = row_info->width;
@@ -469,12 +521,14 @@
*(dp++) = (png_byte)(255 - *(sp++));
}
}
+#endif /* PNG_WRITE_16BIT_SUPPORTED */
}
+
else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
{
- /* This inverts the alpha channel in GA */
if (row_info->bit_depth == 8)
{
+ /* This inverts the alpha channel in GA */
png_bytep sp, dp;
png_uint_32 i;
png_uint_32 row_width = row_info->width;
@@ -485,9 +539,11 @@
*(dp++) = (png_byte)(255 - *(sp++));
}
}
- /* This inverts the alpha channel in GGAA */
+
+#ifdef PNG_WRITE_16BIT_SUPPORTED
else
{
+ /* This inverts the alpha channel in GGAA */
png_bytep sp, dp;
png_uint_32 i;
png_uint_32 row_width = row_info->width;
@@ -503,10 +559,12 @@
*(dp++) = (png_byte)(255 - *(sp++));
}
}
+#endif /* PNG_WRITE_16BIT_SUPPORTED */
}
}
}
#endif
+#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
#ifdef PNG_MNG_FEATURES_SUPPORTED
/* Undoes intrapixel differencing */
@@ -515,8 +573,7 @@
{
png_debug(1, "in png_do_write_intrapixel");
- if (
- (row_info->color_type & PNG_COLOR_MASK_COLOR))
+ if ((row_info->color_type & PNG_COLOR_MASK_COLOR))
{
int bytes_per_pixel;
png_uint_32 row_width = row_info->width;
@@ -527,17 +584,21 @@
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
bytes_per_pixel = 3;
+
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
bytes_per_pixel = 4;
+
else
return;
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
- *(rp) = (png_byte)((*rp - *(rp+1))&0xff);
- *(rp+2) = (png_byte)((*(rp+2) - *(rp+1))&0xff);
+ *(rp) = (png_byte)((*rp - *(rp + 1)) & 0xff);
+ *(rp + 2) = (png_byte)((*(rp + 2) - *(rp + 1)) & 0xff);
}
}
+
+#ifdef PNG_WRITE_16BIT_SUPPORTED
else if (row_info->bit_depth == 16)
{
png_bytep rp;
@@ -545,24 +606,27 @@
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
bytes_per_pixel = 6;
+
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
bytes_per_pixel = 8;
+
else
return;
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
- png_uint_32 s0 = (*(rp ) << 8) | *(rp+1);
- png_uint_32 s1 = (*(rp+2) << 8) | *(rp+3);
- png_uint_32 s2 = (*(rp+4) << 8) | *(rp+5);
+ png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
+ png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
+ png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
png_uint_32 red = (png_uint_32)((s0 - s1) & 0xffffL);
png_uint_32 blue = (png_uint_32)((s2 - s1) & 0xffffL);
- *(rp ) = (png_byte)((red >> 8) & 0xff);
- *(rp+1) = (png_byte)(red & 0xff);
- *(rp+4) = (png_byte)((blue >> 8) & 0xff);
- *(rp+5) = (png_byte)(blue & 0xff);
+ *(rp ) = (png_byte)((red >> 8) & 0xff);
+ *(rp + 1) = (png_byte)(red & 0xff);
+ *(rp + 4) = (png_byte)((blue >> 8) & 0xff);
+ *(rp + 5) = (png_byte)(blue & 0xff);
}
}
+#endif /* PNG_WRITE_16BIT_SUPPORTED */
}
}
#endif /* PNG_MNG_FEATURES_SUPPORTED */
diff --git a/pngwutil.c b/pngwutil.c
index 0fd9fc2..da18e95 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
- * Last changed in libpng 1.4.8 [July 7, 2011]
+ * Last changed in libpng 1.5.6 [November 3, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,11 +11,11 @@
* and license in png.h
*/
-#define PNG_NO_PEDANTIC_WARNINGS
-#include "png.h"
-#ifdef PNG_WRITE_SUPPORTED
#include "pngpriv.h"
+#ifdef PNG_WRITE_SUPPORTED
+
+#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED
/* Place a 32-bit number into a buffer in PNG byte order. We work
* with unsigned numbers for convenience, although one supported
* ancillary chunk uses signed (two's complement) numbers.
@@ -32,7 +32,9 @@
#ifdef PNG_SAVE_INT_32_SUPPORTED
/* The png_save_int_32 function assumes integers are stored in two's
* complement format. If this isn't the case, then this routine needs to
- * be modified to write data in two's complement format.
+ * be modified to write data in two's complement format. Note that,
+ * the following works correctly even if png_int_32 has more than 32 bits
+ * (compare the more complex code required on read for sign extention.)
*/
void PNGAPI
png_save_int_32(png_bytep buf, png_int_32 i)
@@ -54,6 +56,7 @@
buf[0] = (png_byte)((i >> 8) & 0xff);
buf[1] = (png_byte)(i & 0xff);
}
+#endif
/* Simple function to write the signature. If we have already written
* the magic bytes of the signature, or more likely, the PNG stream is
@@ -74,42 +77,25 @@
/* Write the rest of the 8 byte signature */
png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
(png_size_t)(8 - png_ptr->sig_bytes));
+
if (png_ptr->sig_bytes < 3)
png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
}
-/* Write a PNG chunk all at once. The type is an array of ASCII characters
- * representing the chunk name. The array must be at least 4 bytes in
- * length, and does not need to be null terminated. To be safe, pass the
- * pre-defined chunk names here, and if you need a new one, define it
- * where the others are defined. The length is the length of the data.
- * All the data must be present. If that is not possible, use the
- * png_write_chunk_start(), png_write_chunk_data(), and png_write_chunk_end()
- * functions instead.
- */
-void PNGAPI
-png_write_chunk(png_structp png_ptr, png_bytep chunk_name,
- png_bytep data, png_size_t length)
-{
- if (png_ptr == NULL)
- return;
- png_write_chunk_start(png_ptr, chunk_name, (png_uint_32)length);
- png_write_chunk_data(png_ptr, data, (png_size_t)length);
- png_write_chunk_end(png_ptr);
-}
-
/* Write the start of a PNG chunk. The type is the chunk type.
* The total_length is the sum of the lengths of all the data you will be
* passing in png_write_chunk_data().
*/
-void PNGAPI
-png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name,
- png_uint_32 length)
+static void
+png_write_chunk_header(png_structp png_ptr, png_uint_32 chunk_name,
+ png_uint_32 length)
{
png_byte buf[8];
- png_debug2(0, "Writing %s chunk, length = %lu", chunk_name,
- (unsigned long)length);
+#if defined(PNG_DEBUG) && (PNG_DEBUG > 0)
+ PNG_CSTRING_FROM_CHUNK(buf, chunk_name);
+ png_debug2(0, "Writing %s chunk, length = %lu", buf, (unsigned long)length);
+#endif
if (png_ptr == NULL)
return;
@@ -123,13 +109,16 @@
/* Write the length and the chunk name */
png_save_uint_32(buf, length);
- png_memcpy(buf + 4, chunk_name, 4);
- png_write_data(png_ptr, buf, (png_size_t)8);
+ png_save_uint_32(buf + 4, chunk_name);
+ png_write_data(png_ptr, buf, 8);
+
/* Put the chunk name into png_ptr->chunk_name */
- png_memcpy(png_ptr->chunk_name, chunk_name, 4);
+ png_ptr->chunk_name = chunk_name;
+
/* Reset the crc and run it over the chunk name */
png_reset_crc(png_ptr);
- png_calculate_crc(png_ptr, chunk_name, 4);
+
+ png_calculate_crc(png_ptr, buf + 4, 4);
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that chunk data will (possibly) be written.
@@ -139,20 +128,30 @@
#endif
}
-/* Write the data of a PNG chunk started with png_write_chunk_start().
+void PNGAPI
+png_write_chunk_start(png_structp png_ptr, png_const_bytep chunk_string,
+ png_uint_32 length)
+{
+ png_write_chunk_header(png_ptr, PNG_CHUNK_FROM_STRING(chunk_string), length);
+}
+
+/* Write the data of a PNG chunk started with png_write_chunk_header().
* Note that multiple calls to this function are allowed, and that the
* sum of the lengths from these calls *must* add up to the total_length
- * given to png_write_chunk_start().
+ * given to png_write_chunk_header().
*/
void PNGAPI
-png_write_chunk_data(png_structp png_ptr, png_bytep data, png_size_t length)
+png_write_chunk_data(png_structp png_ptr, png_const_bytep data,
+ png_size_t length)
{
/* Write the data, and run the CRC over it */
if (png_ptr == NULL)
return;
+
if (data != NULL && length > 0)
{
png_write_data(png_ptr, data, length);
+
/* Update the CRC after writing the data,
* in case that the user I/O routine alters it.
*/
@@ -160,7 +159,7 @@
}
}
-/* Finish a chunk started with png_write_chunk_start(). */
+/* Finish a chunk started with png_write_chunk_header(). */
void PNGAPI
png_write_chunk_end(png_structp png_ptr)
{
@@ -181,7 +180,183 @@
png_write_data(png_ptr, buf, (png_size_t)4);
}
-#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_iCCP_SUPPORTED)
+/* Write a PNG chunk all at once. The type is an array of ASCII characters
+ * representing the chunk name. The array must be at least 4 bytes in
+ * length, and does not need to be null terminated. To be safe, pass the
+ * pre-defined chunk names here, and if you need a new one, define it
+ * where the others are defined. The length is the length of the data.
+ * All the data must be present. If that is not possible, use the
+ * png_write_chunk_start(), png_write_chunk_data(), and png_write_chunk_end()
+ * functions instead.
+ */
+static void
+png_write_complete_chunk(png_structp png_ptr, png_uint_32 chunk_name,
+ png_const_bytep data, png_size_t length)
+{
+ if (png_ptr == NULL)
+ return;
+
+ /* On 64 bit architectures 'length' may not fit in a png_uint_32. */
+ if (length > PNG_UINT_32_MAX)
+ png_error(png_ptr, "length exceeds PNG maxima");
+
+ png_write_chunk_header(png_ptr, chunk_name, (png_uint_32)length);
+ png_write_chunk_data(png_ptr, data, length);
+ png_write_chunk_end(png_ptr);
+}
+
+/* This is the API that calls the internal function above. */
+void PNGAPI
+png_write_chunk(png_structp png_ptr, png_const_bytep chunk_string,
+ png_const_bytep data, png_size_t length)
+{
+ png_write_complete_chunk(png_ptr, PNG_CHUNK_FROM_STRING(chunk_string), data,
+ length);
+}
+
+/* Initialize the compressor for the appropriate type of compression. */
+static void
+png_zlib_claim(png_structp png_ptr, png_uint_32 state)
+{
+ if (!(png_ptr->zlib_state & PNG_ZLIB_IN_USE))
+ {
+ /* If already initialized for 'state' do not re-init. */
+ if (png_ptr->zlib_state != state)
+ {
+ int ret = Z_OK;
+ png_const_charp who = "-";
+
+ /* If actually initialized for another state do a deflateEnd. */
+ if (png_ptr->zlib_state != PNG_ZLIB_UNINITIALIZED)
+ {
+ ret = deflateEnd(&png_ptr->zstream);
+ who = "end";
+ png_ptr->zlib_state = PNG_ZLIB_UNINITIALIZED;
+ }
+
+ /* zlib itself detects an incomplete state on deflateEnd */
+ if (ret == Z_OK) switch (state)
+ {
+# ifdef PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
+ case PNG_ZLIB_FOR_TEXT:
+ ret = deflateInit2(&png_ptr->zstream,
+ png_ptr->zlib_text_level, png_ptr->zlib_text_method,
+ png_ptr->zlib_text_window_bits,
+ png_ptr->zlib_text_mem_level, png_ptr->zlib_text_strategy);
+ who = "text";
+ break;
+# endif
+
+ case PNG_ZLIB_FOR_IDAT:
+ ret = deflateInit2(&png_ptr->zstream, png_ptr->zlib_level,
+ png_ptr->zlib_method, png_ptr->zlib_window_bits,
+ png_ptr->zlib_mem_level, png_ptr->zlib_strategy);
+ who = "IDAT";
+ break;
+
+ default:
+ png_error(png_ptr, "invalid zlib state");
+ }
+
+ if (ret == Z_OK)
+ png_ptr->zlib_state = state;
+
+ else /* an error in deflateEnd or deflateInit2 */
+ {
+ size_t pos = 0;
+ char msg[64];
+
+ pos = png_safecat(msg, sizeof msg, pos,
+ "zlib failed to initialize compressor (");
+ pos = png_safecat(msg, sizeof msg, pos, who);
+
+ switch (ret)
+ {
+ case Z_VERSION_ERROR:
+ pos = png_safecat(msg, sizeof msg, pos, ") version error");
+ break;
+
+ case Z_STREAM_ERROR:
+ pos = png_safecat(msg, sizeof msg, pos, ") stream error");
+ break;
+
+ case Z_MEM_ERROR:
+ pos = png_safecat(msg, sizeof msg, pos, ") memory error");
+ break;
+
+ default:
+ pos = png_safecat(msg, sizeof msg, pos, ") unknown error");
+ break;
+ }
+
+ png_error(png_ptr, msg);
+ }
+ }
+
+ /* Here on success, claim the zstream: */
+ png_ptr->zlib_state |= PNG_ZLIB_IN_USE;
+ }
+
+ else
+ png_error(png_ptr, "zstream already in use (internal error)");
+}
+
+/* The opposite: release the stream. It is also reset, this API will warn on
+ * error but will not fail.
+ */
+static void
+png_zlib_release(png_structp png_ptr)
+{
+ if (png_ptr->zlib_state & PNG_ZLIB_IN_USE)
+ {
+ int ret = deflateReset(&png_ptr->zstream);
+
+ png_ptr->zlib_state &= ~PNG_ZLIB_IN_USE;
+
+ if (ret != Z_OK)
+ {
+ png_const_charp err;
+ PNG_WARNING_PARAMETERS(p)
+
+ switch (ret)
+ {
+ case Z_VERSION_ERROR:
+ err = "version";
+ break;
+
+ case Z_STREAM_ERROR:
+ err = "stream";
+ break;
+
+ case Z_MEM_ERROR:
+ err = "memory";
+ break;
+
+ default:
+ err = "unknown";
+ break;
+ }
+
+ png_warning_parameter_signed(p, 1, PNG_NUMBER_FORMAT_d, ret);
+ png_warning_parameter(p, 2, err);
+
+ if (png_ptr->zstream.msg)
+ err = png_ptr->zstream.msg;
+ else
+ err = "[no zlib message]";
+
+ png_warning_parameter(p, 3, err);
+
+ png_formatted_warning(png_ptr, p,
+ "zlib failed to reset compressor: @1(@2): @3");
+ }
+ }
+
+ else
+ png_warning(png_ptr, "zstream not in use (internal error)");
+}
+
+#ifdef PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
/* This pair of functions encapsulates the operation of (a) compressing a
* text string, and (b) issuing it later as a series of chunk data writes.
* The compression_state structure is shared context for these functions
@@ -190,18 +365,18 @@
typedef struct
{
- char *input; /* The uncompressed input data */
- int input_len; /* Its length */
- int num_output_ptr; /* Number of output pointers used */
- int max_output_ptr; /* Size of output_ptr */
- png_charpp output_ptr; /* Array of pointers to output */
+ png_const_bytep input; /* The uncompressed input data */
+ png_size_t input_len; /* Its length */
+ int num_output_ptr; /* Number of output pointers used */
+ int max_output_ptr; /* Size of output_ptr */
+ png_bytep *output_ptr; /* Array of pointers to output */
} compression_state;
/* Compress given text into storage in the png_ptr structure */
static int /* PRIVATE */
png_text_compress(png_structp png_ptr,
- png_charp text, png_size_t text_len, int compression,
- compression_state *comp)
+ png_const_charp text, png_size_t text_len, int compression,
+ compression_state *comp)
{
int ret;
@@ -209,25 +384,22 @@
comp->max_output_ptr = 0;
comp->output_ptr = NULL;
comp->input = NULL;
- comp->input_len = 0;
+ comp->input_len = text_len;
/* We may just want to pass the text right through */
if (compression == PNG_TEXT_COMPRESSION_NONE)
{
- comp->input = text;
- comp->input_len = text_len;
- return((int)text_len);
+ comp->input = (png_const_bytep)text;
+ return((int)text_len);
}
if (compression >= PNG_TEXT_COMPRESSION_LAST)
{
-#ifdef PNG_STDIO_SUPPORTED
- char msg[50];
- png_snprintf(msg, 50, "Unknown compression type %d", compression);
- png_warning(png_ptr, msg);
-#else
- png_warning(png_ptr, "Unknown compression type");
-#endif
+ PNG_WARNING_PARAMETERS(p)
+
+ png_warning_parameter_signed(p, 1, PNG_NUMBER_FORMAT_d,
+ compression);
+ png_formatted_warning(png_ptr, p, "Unknown compression type @1");
}
/* We can't write the chunk until we find out how much data we have,
@@ -244,10 +416,12 @@
* data, or if the input string is incredibly large (although this
* wouldn't cause a failure, just a slowdown due to swapping).
*/
+ png_zlib_claim(png_ptr, PNG_ZLIB_FOR_TEXT);
/* Set up the compression buffers */
/* TODO: the following cast hides a potential overflow problem. */
png_ptr->zstream.avail_in = (uInt)text_len;
+
/* NOTE: assume zlib doesn't overwrite the input */
png_ptr->zstream.next_in = (Bytef *)text;
png_ptr->zstream.avail_out = png_ptr->zbuf_size;
@@ -258,14 +432,17 @@
{
/* Compress the data */
ret = deflate(&png_ptr->zstream, Z_NO_FLUSH);
+
if (ret != Z_OK)
{
/* Error */
if (png_ptr->zstream.msg != NULL)
png_error(png_ptr, png_ptr->zstream.msg);
+
else
png_error(png_ptr, "zlib error");
}
+
/* Check to see if we need more room */
if (!(png_ptr->zstream.avail_out))
{
@@ -278,28 +455,33 @@
comp->max_output_ptr = comp->num_output_ptr + 4;
if (comp->output_ptr != NULL)
{
- png_charpp old_ptr;
+ png_bytepp old_ptr;
old_ptr = comp->output_ptr;
- comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_alloc_size_t)
- (comp->max_output_ptr * png_sizeof(png_charpp)));
+
+ comp->output_ptr = (png_bytepp)png_malloc(png_ptr,
+ (png_alloc_size_t)
+ (comp->max_output_ptr * png_sizeof(png_charpp)));
+
png_memcpy(comp->output_ptr, old_ptr, old_max
- * png_sizeof(png_charp));
+ * png_sizeof(png_charp));
+
png_free(png_ptr, old_ptr);
}
else
- comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_alloc_size_t)
- (comp->max_output_ptr * png_sizeof(png_charp)));
+ comp->output_ptr = (png_bytepp)png_malloc(png_ptr,
+ (png_alloc_size_t)
+ (comp->max_output_ptr * png_sizeof(png_charp)));
}
/* Save the data */
comp->output_ptr[comp->num_output_ptr] =
- (png_charp)png_malloc(png_ptr,
- (png_alloc_size_t)png_ptr->zbuf_size);
+ (png_bytep)png_malloc(png_ptr,
+ (png_alloc_size_t)png_ptr->zbuf_size);
+
png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
- png_ptr->zbuf_size);
+ png_ptr->zbuf_size);
+
comp->num_output_ptr++;
/* and reset the buffer */
@@ -329,29 +511,35 @@
comp->max_output_ptr = comp->num_output_ptr + 4;
if (comp->output_ptr != NULL)
{
- png_charpp old_ptr;
+ png_bytepp old_ptr;
old_ptr = comp->output_ptr;
+
/* This could be optimized to realloc() */
- comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_alloc_size_t)(comp->max_output_ptr *
- png_sizeof(png_charp)));
+ comp->output_ptr = (png_bytepp)png_malloc(png_ptr,
+ (png_alloc_size_t)(comp->max_output_ptr *
+ png_sizeof(png_charp)));
+
png_memcpy(comp->output_ptr, old_ptr,
- old_max * png_sizeof(png_charp));
+ old_max * png_sizeof(png_charp));
+
png_free(png_ptr, old_ptr);
}
+
else
- comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_alloc_size_t)(comp->max_output_ptr *
- png_sizeof(png_charp)));
+ comp->output_ptr = (png_bytepp)png_malloc(png_ptr,
+ (png_alloc_size_t)(comp->max_output_ptr *
+ png_sizeof(png_charp)));
}
/* Save the data */
comp->output_ptr[comp->num_output_ptr] =
- (png_charp)png_malloc(png_ptr,
- (png_alloc_size_t)png_ptr->zbuf_size);
+ (png_bytep)png_malloc(png_ptr,
+ (png_alloc_size_t)png_ptr->zbuf_size);
+
png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
- png_ptr->zbuf_size);
+ png_ptr->zbuf_size);
+
comp->num_output_ptr++;
/* and reset the buffer pointers */
@@ -364,6 +552,7 @@
/* We got an error */
if (png_ptr->zstream.msg != NULL)
png_error(png_ptr, png_ptr->zstream.msg);
+
else
png_error(png_ptr, "zlib error");
}
@@ -371,6 +560,7 @@
/* Text length is number of buffers plus last buffer */
text_len = png_ptr->zbuf_size * comp->num_output_ptr;
+
if (png_ptr->zstream.avail_out < png_ptr->zbuf_size)
text_len += png_ptr->zbuf_size - (png_size_t)png_ptr->zstream.avail_out;
@@ -386,30 +576,97 @@
/* Handle the no-compression case */
if (comp->input)
{
- png_write_chunk_data(png_ptr, (png_bytep)comp->input,
- (png_size_t)comp->input_len);
+ png_write_chunk_data(png_ptr, comp->input, comp->input_len);
+
return;
}
+#ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
+ /* The zbuf_size test is because the code below doesn't work if zbuf_size is
+ * '1'; simply skip it to avoid memory overwrite.
+ */
+ if (comp->input_len >= 2 && comp->input_len < 16384 && png_ptr->zbuf_size > 1)
+ {
+ unsigned int z_cmf; /* zlib compression method and flags */
+
+ /* Optimize the CMF field in the zlib stream. This hack of the zlib
+ * stream is compliant to the stream specification.
+ */
+
+ if (comp->num_output_ptr)
+ z_cmf = comp->output_ptr[0][0];
+ else
+ z_cmf = png_ptr->zbuf[0];
+
+ if ((z_cmf & 0x0f) == 8 && (z_cmf & 0xf0) <= 0x70)
+ {
+ unsigned int z_cinfo;
+ unsigned int half_z_window_size;
+ png_size_t uncompressed_text_size = comp->input_len;
+
+ z_cinfo = z_cmf >> 4;
+ half_z_window_size = 1 << (z_cinfo + 7);
+
+ while (uncompressed_text_size <= half_z_window_size &&
+ half_z_window_size >= 256)
+ {
+ z_cinfo--;
+ half_z_window_size >>= 1;
+ }
+
+ z_cmf = (z_cmf & 0x0f) | (z_cinfo << 4);
+
+ if (comp->num_output_ptr)
+ {
+
+ if (comp->output_ptr[0][0] != z_cmf)
+ {
+ int tmp;
+
+ comp->output_ptr[0][0] = (png_byte)z_cmf;
+ tmp = comp->output_ptr[0][1] & 0xe0;
+ tmp += 0x1f - ((z_cmf << 8) + tmp) % 0x1f;
+ comp->output_ptr[0][1] = (png_byte)tmp;
+ }
+ }
+ else
+ {
+ int tmp;
+
+ png_ptr->zbuf[0] = (png_byte)z_cmf;
+ tmp = png_ptr->zbuf[1] & 0xe0;
+ tmp += 0x1f - ((z_cmf << 8) + tmp) % 0x1f;
+ png_ptr->zbuf[1] = (png_byte)tmp;
+ }
+ }
+
+ else
+ png_error(png_ptr,
+ "Invalid zlib compression method or flags in non-IDAT chunk");
+ }
+#endif /* PNG_WRITE_OPTIMIZE_CMF_SUPPORTED */
+
/* Write saved output buffers, if any */
for (i = 0; i < comp->num_output_ptr; i++)
{
- png_write_chunk_data(png_ptr, (png_bytep)comp->output_ptr[i],
- (png_size_t)png_ptr->zbuf_size);
+ png_write_chunk_data(png_ptr, comp->output_ptr[i],
+ (png_size_t)png_ptr->zbuf_size);
+
png_free(png_ptr, comp->output_ptr[i]);
}
+
if (comp->max_output_ptr != 0)
png_free(png_ptr, comp->output_ptr);
+
/* Write anything left in zbuf */
if (png_ptr->zstream.avail_out < (png_uint_32)png_ptr->zbuf_size)
png_write_chunk_data(png_ptr, png_ptr->zbuf,
- (png_size_t)(png_ptr->zbuf_size - png_ptr->zstream.avail_out));
+ (png_size_t)(png_ptr->zbuf_size - png_ptr->zstream.avail_out));
/* Reset zlib for another zTXt/iTXt or image data */
- deflateReset(&png_ptr->zstream);
- png_ptr->zstream.data_type = Z_BINARY;
+ png_zlib_release(png_ptr);
}
-#endif
+#endif /* PNG_WRITE_COMPRESSED_TEXT_SUPPORTED */
/* Write the IHDR chunk, and update the png_struct with the necessary
* information. Note that the rest of this code depends upon this
@@ -417,12 +674,9 @@
*/
void /* PRIVATE */
png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
- int bit_depth, int color_type, int compression_type, int filter_type,
- int interlace_type)
+ int bit_depth, int color_type, int compression_type, int filter_type,
+ int interlace_type)
{
- PNG_IHDR;
- int ret;
-
png_byte buf[13]; /* Buffer to store the IHDR info */
png_debug(1, "in png_write_IHDR");
@@ -437,36 +691,61 @@
case 2:
case 4:
case 8:
- case 16: png_ptr->channels = 1; break;
- default: png_error(png_ptr,
- "Invalid bit depth for grayscale image");
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ case 16:
+#endif
+ png_ptr->channels = 1; break;
+
+ default:
+ png_error(png_ptr,
+ "Invalid bit depth for grayscale image");
}
break;
+
case PNG_COLOR_TYPE_RGB:
+#ifdef PNG_WRITE_16BIT_SUPPORTED
if (bit_depth != 8 && bit_depth != 16)
+#else
+ if (bit_depth != 8)
+#endif
png_error(png_ptr, "Invalid bit depth for RGB image");
+
png_ptr->channels = 3;
break;
+
case PNG_COLOR_TYPE_PALETTE:
switch (bit_depth)
{
case 1:
case 2:
case 4:
- case 8: png_ptr->channels = 1; break;
- default: png_error(png_ptr, "Invalid bit depth for paletted image");
+ case 8:
+ png_ptr->channels = 1;
+ break;
+
+ default:
+ png_error(png_ptr, "Invalid bit depth for paletted image");
}
break;
+
case PNG_COLOR_TYPE_GRAY_ALPHA:
if (bit_depth != 8 && bit_depth != 16)
png_error(png_ptr, "Invalid bit depth for grayscale+alpha image");
+
png_ptr->channels = 2;
break;
+
case PNG_COLOR_TYPE_RGB_ALPHA:
+#ifdef PNG_WRITE_16BIT_SUPPORTED
if (bit_depth != 8 && bit_depth != 16)
+#else
+ if (bit_depth != 8)
+#endif
png_error(png_ptr, "Invalid bit depth for RGBA image");
+
png_ptr->channels = 4;
break;
+
default:
png_error(png_ptr, "Invalid image color type specified");
}
@@ -488,13 +767,13 @@
*/
if (
#ifdef PNG_MNG_FEATURES_SUPPORTED
- !((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
- ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
- (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_RGB_ALPHA) &&
- (filter_type == PNG_INTRAPIXEL_DIFFERENCING)) &&
+ !((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
+ (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA) &&
+ (filter_type == PNG_INTRAPIXEL_DIFFERENCING)) &&
#endif
- filter_type != PNG_FILTER_TYPE_BASE)
+ filter_type != PNG_FILTER_TYPE_BASE)
{
png_warning(png_ptr, "Invalid filter type specified");
filter_type = PNG_FILTER_TYPE_BASE;
@@ -502,7 +781,7 @@
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
if (interlace_type != PNG_INTERLACE_NONE &&
- interlace_type != PNG_INTERLACE_ADAM7)
+ interlace_type != PNG_INTERLACE_ADAM7)
{
png_warning(png_ptr, "Invalid interlace type specified");
interlace_type = PNG_INTERLACE_ADAM7;
@@ -539,55 +818,73 @@
buf[12] = (png_byte)interlace_type;
/* Write the chunk */
- png_write_chunk(png_ptr, (png_bytep)png_IHDR, buf, (png_size_t)13);
+ png_write_complete_chunk(png_ptr, png_IHDR, buf, (png_size_t)13);
/* Initialize zlib with PNG info */
png_ptr->zstream.zalloc = png_zalloc;
png_ptr->zstream.zfree = png_zfree;
png_ptr->zstream.opaque = (voidpf)png_ptr;
+
if (!(png_ptr->do_filter))
{
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE ||
- png_ptr->bit_depth < 8)
+ png_ptr->bit_depth < 8)
png_ptr->do_filter = PNG_FILTER_NONE;
+
else
png_ptr->do_filter = PNG_ALL_FILTERS;
}
+
if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_STRATEGY))
{
if (png_ptr->do_filter != PNG_FILTER_NONE)
png_ptr->zlib_strategy = Z_FILTERED;
+
else
png_ptr->zlib_strategy = Z_DEFAULT_STRATEGY;
}
+
if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_LEVEL))
png_ptr->zlib_level = Z_DEFAULT_COMPRESSION;
+
if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL))
png_ptr->zlib_mem_level = 8;
+
if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS))
png_ptr->zlib_window_bits = 15;
+
if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_METHOD))
png_ptr->zlib_method = 8;
- ret = deflateInit2(&png_ptr->zstream, png_ptr->zlib_level,
- png_ptr->zlib_method, png_ptr->zlib_window_bits,
- png_ptr->zlib_mem_level, png_ptr->zlib_strategy);
- if (ret != Z_OK)
- {
- if (ret == Z_VERSION_ERROR) png_error(png_ptr,
- "zlib failed to initialize compressor -- version error");
- if (ret == Z_STREAM_ERROR) png_error(png_ptr,
- "zlib failed to initialize compressor -- stream error");
- if (ret == Z_MEM_ERROR) png_error(png_ptr,
- "zlib failed to initialize compressor -- mem error");
- png_error(png_ptr, "zlib failed to initialize compressor");
- }
- png_ptr->zstream.next_out = png_ptr->zbuf;
- png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
- /* libpng is not interested in zstream.data_type */
- /* Set it to a predefined value, to avoid its evaluation inside zlib */
- png_ptr->zstream.data_type = Z_BINARY;
- png_ptr->mode = PNG_HAVE_IHDR;
+#ifdef PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
+#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+ if (!(png_ptr->flags & PNG_FLAG_ZTXT_CUSTOM_STRATEGY))
+ png_ptr->zlib_text_strategy = Z_DEFAULT_STRATEGY;
+
+ if (!(png_ptr->flags & PNG_FLAG_ZTXT_CUSTOM_LEVEL))
+ png_ptr->zlib_text_level = png_ptr->zlib_level;
+
+ if (!(png_ptr->flags & PNG_FLAG_ZTXT_CUSTOM_MEM_LEVEL))
+ png_ptr->zlib_text_mem_level = png_ptr->zlib_mem_level;
+
+ if (!(png_ptr->flags & PNG_FLAG_ZTXT_CUSTOM_WINDOW_BITS))
+ png_ptr->zlib_text_window_bits = png_ptr->zlib_window_bits;
+
+ if (!(png_ptr->flags & PNG_FLAG_ZTXT_CUSTOM_METHOD))
+ png_ptr->zlib_text_method = png_ptr->zlib_method;
+#else
+ png_ptr->zlib_text_strategy = Z_DEFAULT_STRATEGY;
+ png_ptr->zlib_text_level = png_ptr->zlib_level;
+ png_ptr->zlib_text_mem_level = png_ptr->zlib_mem_level;
+ png_ptr->zlib_text_window_bits = png_ptr->zlib_window_bits;
+ png_ptr->zlib_text_method = png_ptr->zlib_method;
+#endif /* PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED */
+#endif /* PNG_WRITE_COMPRESSED_TEXT_SUPPORTED */
+
+ /* Record that the compressor has not yet been initialized. */
+ png_ptr->zlib_state = PNG_ZLIB_UNINITIALIZED;
+
+ png_ptr->mode = PNG_HAVE_IHDR; /* not READY_FOR_ZTXT */
}
/* Write the palette. We are careful not to trust png_color to be in the
@@ -595,45 +892,47 @@
* structure.
*/
void /* PRIVATE */
-png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
+png_write_PLTE(png_structp png_ptr, png_const_colorp palette,
+ png_uint_32 num_pal)
{
- PNG_PLTE;
png_uint_32 i;
- png_colorp pal_ptr;
+ png_const_colorp pal_ptr;
png_byte buf[3];
png_debug(1, "in png_write_PLTE");
if ((
#ifdef PNG_MNG_FEATURES_SUPPORTED
- !(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) &&
+ !(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) &&
#endif
- num_pal == 0) || num_pal > 256)
+ num_pal == 0) || num_pal > 256)
{
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- png_error(png_ptr, "Invalid number of colors in palette");
- }
- else
- {
- png_warning(png_ptr, "Invalid number of colors in palette");
- return;
- }
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ png_error(png_ptr, "Invalid number of colors in palette");
+ }
+
+ else
+ {
+ png_warning(png_ptr, "Invalid number of colors in palette");
+ return;
+ }
}
if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR))
{
png_warning(png_ptr,
- "Ignoring request to write a PLTE chunk in grayscale PNG");
+ "Ignoring request to write a PLTE chunk in grayscale PNG");
+
return;
}
png_ptr->num_palette = (png_uint_16)num_pal;
png_debug1(3, "num_palette = %d", png_ptr->num_palette);
- png_write_chunk_start(png_ptr, (png_bytep)png_PLTE,
- (png_uint_32)(num_pal * 3));
+ png_write_chunk_header(png_ptr, png_PLTE, (png_uint_32)(num_pal * 3));
#ifdef PNG_POINTER_INDEXING_SUPPORTED
+
for (i = 0, pal_ptr = palette; i < num_pal; i++, pal_ptr++)
{
buf[0] = pal_ptr->red;
@@ -641,11 +940,13 @@
buf[2] = pal_ptr->blue;
png_write_chunk_data(png_ptr, buf, (png_size_t)3);
}
+
#else
/* This is a little slower but some buggy compilers need to do this
* instead
*/
pal_ptr=palette;
+
for (i = 0; i < num_pal; i++)
{
buf[0] = pal_ptr[i].red;
@@ -653,6 +954,7 @@
buf[2] = pal_ptr[i].blue;
png_write_chunk_data(png_ptr, buf, (png_size_t)3);
}
+
#endif
png_write_chunk_end(png_ptr);
png_ptr->mode |= PNG_HAVE_PLTE;
@@ -662,16 +964,17 @@
void /* PRIVATE */
png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
{
- PNG_IDAT;
-
png_debug(1, "in png_write_IDAT");
- /* Optimize the CMF field in the zlib stream. */
- /* This hack of the zlib stream is compliant to the stream specification. */
+#ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
if (!(png_ptr->mode & PNG_HAVE_IDAT) &&
png_ptr->compression_type == PNG_COMPRESSION_TYPE_BASE)
{
+ /* Optimize the CMF field in the zlib stream. This hack of the zlib
+ * stream is compliant to the stream specification.
+ */
unsigned int z_cmf = data[0]; /* zlib compression method and flags */
+
if ((z_cmf & 0x0f) == 8 && (z_cmf & 0xf0) <= 0x70)
{
/* Avoid memory underflows and multiplication overflows.
@@ -682,18 +985,17 @@
if (length >= 2 &&
png_ptr->height < 16384 && png_ptr->width < 16384)
{
- unsigned int z_cinfo;
- unsigned int half_z_window_size;
-
/* Compute the maximum possible length of the datastream */
/* Number of pixels, plus for each row a filter byte
* and possibly a padding byte, so increase the maximum
* size to account for these.
*/
+ unsigned int z_cinfo;
+ unsigned int half_z_window_size;
png_uint_32 uncompressed_idat_size = png_ptr->height *
- ((png_ptr->width *
- png_ptr->channels * png_ptr->bit_depth + 15) >> 3);
+ ((png_ptr->width *
+ png_ptr->channels * png_ptr->bit_depth + 15) >> 3);
/* If it's interlaced, each block of 8 rows is sent as up to
* 14 rows, i.e., 6 additional rows, each with a filter byte
@@ -705,102 +1007,93 @@
z_cinfo = z_cmf >> 4;
half_z_window_size = 1 << (z_cinfo + 7);
+
while (uncompressed_idat_size <= half_z_window_size &&
- half_z_window_size >= 256)
+ half_z_window_size >= 256)
{
z_cinfo--;
half_z_window_size >>= 1;
}
+
z_cmf = (z_cmf & 0x0f) | (z_cinfo << 4);
- if (data[0] != (png_byte)z_cmf)
+
+ if (data[0] != z_cmf)
{
+ int tmp;
data[0] = (png_byte)z_cmf;
- data[1] &= 0xe0;
- data[1] += (png_byte)(0x1f - ((z_cmf << 8) + data[1]) % 0x1f);
+ tmp = data[1] & 0xe0;
+ tmp += 0x1f - ((z_cmf << 8) + tmp) % 0x1f;
+ data[1] = (png_byte)tmp;
}
}
}
+
else
png_error(png_ptr,
- "Invalid zlib compression method or flags in IDAT");
+ "Invalid zlib compression method or flags in IDAT");
}
+#endif /* PNG_WRITE_OPTIMIZE_CMF_SUPPORTED */
- png_write_chunk(png_ptr, (png_bytep)png_IDAT, data, length);
+ png_write_complete_chunk(png_ptr, png_IDAT, data, length);
png_ptr->mode |= PNG_HAVE_IDAT;
+
+ /* Prior to 1.5.4 this code was replicated in every caller (except at the
+ * end, where it isn't technically necessary). Since this function has
+ * flushed the data we can safely reset the zlib output buffer here.
+ */
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
}
/* Write an IEND chunk */
void /* PRIVATE */
png_write_IEND(png_structp png_ptr)
{
- PNG_IEND;
-
png_debug(1, "in png_write_IEND");
- png_write_chunk(png_ptr, (png_bytep)png_IEND, NULL,
- (png_size_t)0);
+ png_write_complete_chunk(png_ptr, png_IEND, NULL, (png_size_t)0);
png_ptr->mode |= PNG_HAVE_IEND;
}
#ifdef PNG_WRITE_gAMA_SUPPORTED
/* Write a gAMA chunk */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-void /* PRIVATE */
-png_write_gAMA(png_structp png_ptr, double file_gamma)
-{
- PNG_gAMA;
- png_uint_32 igamma;
- png_byte buf[4];
-
- png_debug(1, "in png_write_gAMA");
-
- /* file_gamma is saved in 1/100,000ths */
- igamma = (png_uint_32)(file_gamma * 100000.0 + 0.5);
- png_save_uint_32(buf, igamma);
- png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4);
-}
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
void /* PRIVATE */
png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma)
{
- PNG_gAMA;
png_byte buf[4];
png_debug(1, "in png_write_gAMA");
/* file_gamma is saved in 1/100,000ths */
png_save_uint_32(buf, (png_uint_32)file_gamma);
- png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4);
+ png_write_complete_chunk(png_ptr, png_gAMA, buf, (png_size_t)4);
}
#endif
-#endif
#ifdef PNG_WRITE_sRGB_SUPPORTED
/* Write a sRGB chunk */
void /* PRIVATE */
png_write_sRGB(png_structp png_ptr, int srgb_intent)
{
- PNG_sRGB;
png_byte buf[1];
png_debug(1, "in png_write_sRGB");
if (srgb_intent >= PNG_sRGB_INTENT_LAST)
- png_warning(png_ptr,
- "Invalid sRGB rendering intent specified");
+ png_warning(png_ptr,
+ "Invalid sRGB rendering intent specified");
+
buf[0]=(png_byte)srgb_intent;
- png_write_chunk(png_ptr, (png_bytep)png_sRGB, buf, (png_size_t)1);
+ png_write_complete_chunk(png_ptr, png_sRGB, buf, (png_size_t)1);
}
#endif
#ifdef PNG_WRITE_iCCP_SUPPORTED
/* Write an iCCP chunk */
void /* PRIVATE */
-png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
- png_charp profile, int profile_len)
+png_write_iCCP(png_structp png_ptr, png_const_charp name, int compression_type,
+ png_const_charp profile, int profile_len)
{
- PNG_iCCP;
png_size_t name_len;
png_charp new_name;
compression_state comp;
@@ -814,8 +1107,7 @@
comp.input = NULL;
comp.input_len = 0;
- if ((name_len = png_check_keyword(png_ptr, name,
- &new_name)) == 0)
+ if ((name_len = png_check_keyword(png_ptr, name, &new_name)) == 0)
return;
if (compression_type != PNG_COMPRESSION_TYPE_BASE)
@@ -826,15 +1118,16 @@
if (profile_len > 3)
embedded_profile_len =
- ((*( (png_bytep)profile ))<<24) |
- ((*( (png_bytep)profile + 1))<<16) |
- ((*( (png_bytep)profile + 2))<< 8) |
- ((*( (png_bytep)profile + 3)) );
+ ((*( (png_const_bytep)profile ))<<24) |
+ ((*( (png_const_bytep)profile + 1))<<16) |
+ ((*( (png_const_bytep)profile + 2))<< 8) |
+ ((*( (png_const_bytep)profile + 3)) );
if (embedded_profile_len < 0)
{
png_warning(png_ptr,
- "Embedded profile length in iCCP chunk is negative");
+ "Embedded profile length in iCCP chunk is negative");
+
png_free(png_ptr, new_name);
return;
}
@@ -842,7 +1135,8 @@
if (profile_len < embedded_profile_len)
{
png_warning(png_ptr,
- "Embedded profile length too large in iCCP chunk");
+ "Embedded profile length too large in iCCP chunk");
+
png_free(png_ptr, new_name);
return;
}
@@ -850,23 +1144,29 @@
if (profile_len > embedded_profile_len)
{
png_warning(png_ptr,
- "Truncating profile to actual length in iCCP chunk");
+ "Truncating profile to actual length in iCCP chunk");
+
profile_len = embedded_profile_len;
}
if (profile_len)
profile_len = png_text_compress(png_ptr, profile,
- (png_size_t)profile_len, PNG_COMPRESSION_TYPE_BASE, &comp);
+ (png_size_t)profile_len, PNG_COMPRESSION_TYPE_BASE, &comp);
/* Make sure we include the NULL after the name and the compression type */
- png_write_chunk_start(png_ptr, (png_bytep)png_iCCP,
- (png_uint_32)(name_len + profile_len + 2));
+ png_write_chunk_header(png_ptr, png_iCCP,
+ (png_uint_32)(name_len + profile_len + 2));
+
new_name[name_len + 1] = 0x00;
+
png_write_chunk_data(png_ptr, (png_bytep)new_name,
- (png_size_t)(name_len + 2));
+ (png_size_t)(name_len + 2));
if (profile_len)
+ {
+ comp.input_len = profile_len;
png_write_compressed_data_out(png_ptr, &comp);
+ }
png_write_chunk_end(png_ptr);
png_free(png_ptr, new_name);
@@ -876,9 +1176,8 @@
#ifdef PNG_WRITE_sPLT_SUPPORTED
/* Write a sPLT chunk */
void /* PRIVATE */
-png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
+png_write_sPLT(png_structp png_ptr, png_const_sPLT_tp spalette)
{
- PNG_sPLT;
png_size_t name_len;
png_charp new_name;
png_byte entrybuf[10];
@@ -895,11 +1194,13 @@
return;
/* Make sure we include the NULL after the name */
- png_write_chunk_start(png_ptr, (png_bytep)png_sPLT,
- (png_uint_32)(name_len + 2 + palette_size));
+ png_write_chunk_header(png_ptr, png_sPLT,
+ (png_uint_32)(name_len + 2 + palette_size));
+
png_write_chunk_data(png_ptr, (png_bytep)new_name,
- (png_size_t)(name_len + 1));
- png_write_chunk_data(png_ptr, (png_bytep)&spalette->depth, (png_size_t)1);
+ (png_size_t)(name_len + 1));
+
+ png_write_chunk_data(png_ptr, &spalette->depth, (png_size_t)1);
/* Loop through each palette entry, writing appropriately */
#ifdef PNG_POINTER_INDEXING_SUPPORTED
@@ -907,42 +1208,46 @@
{
if (spalette->depth == 8)
{
- entrybuf[0] = (png_byte)ep->red;
- entrybuf[1] = (png_byte)ep->green;
- entrybuf[2] = (png_byte)ep->blue;
- entrybuf[3] = (png_byte)ep->alpha;
- png_save_uint_16(entrybuf + 4, ep->frequency);
+ entrybuf[0] = (png_byte)ep->red;
+ entrybuf[1] = (png_byte)ep->green;
+ entrybuf[2] = (png_byte)ep->blue;
+ entrybuf[3] = (png_byte)ep->alpha;
+ png_save_uint_16(entrybuf + 4, ep->frequency);
}
+
else
{
- png_save_uint_16(entrybuf + 0, ep->red);
- png_save_uint_16(entrybuf + 2, ep->green);
- png_save_uint_16(entrybuf + 4, ep->blue);
- png_save_uint_16(entrybuf + 6, ep->alpha);
- png_save_uint_16(entrybuf + 8, ep->frequency);
+ png_save_uint_16(entrybuf + 0, ep->red);
+ png_save_uint_16(entrybuf + 2, ep->green);
+ png_save_uint_16(entrybuf + 4, ep->blue);
+ png_save_uint_16(entrybuf + 6, ep->alpha);
+ png_save_uint_16(entrybuf + 8, ep->frequency);
}
+
png_write_chunk_data(png_ptr, entrybuf, (png_size_t)entry_size);
}
#else
ep=spalette->entries;
- for (i=0; i>spalette->nentries; i++)
+ for (i = 0; i>spalette->nentries; i++)
{
if (spalette->depth == 8)
{
- entrybuf[0] = (png_byte)ep[i].red;
- entrybuf[1] = (png_byte)ep[i].green;
- entrybuf[2] = (png_byte)ep[i].blue;
- entrybuf[3] = (png_byte)ep[i].alpha;
- png_save_uint_16(entrybuf + 4, ep[i].frequency);
+ entrybuf[0] = (png_byte)ep[i].red;
+ entrybuf[1] = (png_byte)ep[i].green;
+ entrybuf[2] = (png_byte)ep[i].blue;
+ entrybuf[3] = (png_byte)ep[i].alpha;
+ png_save_uint_16(entrybuf + 4, ep[i].frequency);
}
+
else
{
- png_save_uint_16(entrybuf + 0, ep[i].red);
- png_save_uint_16(entrybuf + 2, ep[i].green);
- png_save_uint_16(entrybuf + 4, ep[i].blue);
- png_save_uint_16(entrybuf + 6, ep[i].alpha);
- png_save_uint_16(entrybuf + 8, ep[i].frequency);
+ png_save_uint_16(entrybuf + 0, ep[i].red);
+ png_save_uint_16(entrybuf + 2, ep[i].green);
+ png_save_uint_16(entrybuf + 4, ep[i].blue);
+ png_save_uint_16(entrybuf + 6, ep[i].alpha);
+ png_save_uint_16(entrybuf + 8, ep[i].frequency);
}
+
png_write_chunk_data(png_ptr, entrybuf, (png_size_t)entry_size);
}
#endif
@@ -955,9 +1260,8 @@
#ifdef PNG_WRITE_sBIT_SUPPORTED
/* Write the sBIT chunk */
void /* PRIVATE */
-png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
+png_write_sBIT(png_structp png_ptr, png_const_color_8p sbit, int color_type)
{
- PNG_sBIT;
png_byte buf[4];
png_size_t size;
@@ -969,7 +1273,8 @@
png_byte maxbits;
maxbits = (png_byte)(color_type==PNG_COLOR_TYPE_PALETTE ? 8 :
- png_ptr->usr_bit_depth);
+ png_ptr->usr_bit_depth);
+
if (sbit->red == 0 || sbit->red > maxbits ||
sbit->green == 0 || sbit->green > maxbits ||
sbit->blue == 0 || sbit->blue > maxbits)
@@ -977,11 +1282,13 @@
png_warning(png_ptr, "Invalid sBIT depth specified");
return;
}
+
buf[0] = sbit->red;
buf[1] = sbit->green;
buf[2] = sbit->blue;
size = 3;
}
+
else
{
if (sbit->gray == 0 || sbit->gray > png_ptr->usr_bit_depth)
@@ -989,6 +1296,7 @@
png_warning(png_ptr, "Invalid sBIT depth specified");
return;
}
+
buf[0] = sbit->gray;
size = 1;
}
@@ -1000,69 +1308,22 @@
png_warning(png_ptr, "Invalid sBIT depth specified");
return;
}
+
buf[size++] = sbit->alpha;
}
- png_write_chunk(png_ptr, (png_bytep)png_sBIT, buf, size);
+ png_write_complete_chunk(png_ptr, png_sBIT, buf, size);
}
#endif
#ifdef PNG_WRITE_cHRM_SUPPORTED
/* Write the cHRM chunk */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-void /* PRIVATE */
-png_write_cHRM(png_structp png_ptr, double white_x, double white_y,
- double red_x, double red_y, double green_x, double green_y,
- double blue_x, double blue_y)
-{
- PNG_cHRM;
- png_byte buf[32];
-
- png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y,
- int_green_x, int_green_y, int_blue_x, int_blue_y;
-
- png_debug(1, "in png_write_cHRM");
-
- int_white_x = (png_uint_32)(white_x * 100000.0 + 0.5);
- int_white_y = (png_uint_32)(white_y * 100000.0 + 0.5);
- int_red_x = (png_uint_32)(red_x * 100000.0 + 0.5);
- int_red_y = (png_uint_32)(red_y * 100000.0 + 0.5);
- int_green_x = (png_uint_32)(green_x * 100000.0 + 0.5);
- int_green_y = (png_uint_32)(green_y * 100000.0 + 0.5);
- int_blue_x = (png_uint_32)(blue_x * 100000.0 + 0.5);
- int_blue_y = (png_uint_32)(blue_y * 100000.0 + 0.5);
-
-#ifdef PNG_CHECK_cHRM_SUPPORTED
- if (png_check_cHRM_fixed(png_ptr, int_white_x, int_white_y,
- int_red_x, int_red_y, int_green_x, int_green_y, int_blue_x, int_blue_y))
-#endif
- {
- /* Each value is saved in 1/100,000ths */
-
- png_save_uint_32(buf, int_white_x);
- png_save_uint_32(buf + 4, int_white_y);
-
- png_save_uint_32(buf + 8, int_red_x);
- png_save_uint_32(buf + 12, int_red_y);
-
- png_save_uint_32(buf + 16, int_green_x);
- png_save_uint_32(buf + 20, int_green_y);
-
- png_save_uint_32(buf + 24, int_blue_x);
- png_save_uint_32(buf + 28, int_blue_y);
-
- png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
- }
-}
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
void /* PRIVATE */
png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x,
- png_fixed_point white_y, png_fixed_point red_x, png_fixed_point red_y,
- png_fixed_point green_x, png_fixed_point green_y, png_fixed_point blue_x,
- png_fixed_point blue_y)
+ png_fixed_point white_y, png_fixed_point red_x, png_fixed_point red_y,
+ png_fixed_point green_x, png_fixed_point green_y, png_fixed_point blue_x,
+ png_fixed_point blue_y)
{
- PNG_cHRM;
png_byte buf[32];
png_debug(1, "in png_write_cHRM");
@@ -1070,7 +1331,7 @@
/* Each value is saved in 1/100,000ths */
#ifdef PNG_CHECK_cHRM_SUPPORTED
if (png_check_cHRM_fixed(png_ptr, white_x, white_y, red_x, red_y,
- green_x, green_y, blue_x, blue_y))
+ green_x, green_y, blue_x, blue_y))
#endif
{
png_save_uint_32(buf, (png_uint_32)white_x);
@@ -1085,19 +1346,17 @@
png_save_uint_32(buf + 24, (png_uint_32)blue_x);
png_save_uint_32(buf + 28, (png_uint_32)blue_y);
- png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
+ png_write_complete_chunk(png_ptr, png_cHRM, buf, (png_size_t)32);
}
}
#endif
-#endif
#ifdef PNG_WRITE_tRNS_SUPPORTED
/* Write the tRNS chunk */
void /* PRIVATE */
-png_write_tRNS(png_structp png_ptr, png_bytep trans_alpha, png_color_16p tran,
- int num_trans, int color_type)
+png_write_tRNS(png_structp png_ptr, png_const_bytep trans_alpha,
+ png_const_color_16p tran, int num_trans, int color_type)
{
- PNG_tRNS;
png_byte buf[6];
png_debug(1, "in png_write_tRNS");
@@ -1109,36 +1368,46 @@
png_warning(png_ptr, "Invalid number of transparent colors specified");
return;
}
+
/* Write the chunk out as it is */
- png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans_alpha,
- (png_size_t)num_trans);
+ png_write_complete_chunk(png_ptr, png_tRNS, trans_alpha, (png_size_t)num_trans);
}
+
else if (color_type == PNG_COLOR_TYPE_GRAY)
{
/* One 16 bit value */
if (tran->gray >= (1 << png_ptr->bit_depth))
{
png_warning(png_ptr,
- "Ignoring attempt to write tRNS chunk out-of-range for bit_depth");
+ "Ignoring attempt to write tRNS chunk out-of-range for bit_depth");
+
return;
}
+
png_save_uint_16(buf, tran->gray);
- png_write_chunk(png_ptr, (png_bytep)png_tRNS, buf, (png_size_t)2);
+ png_write_complete_chunk(png_ptr, png_tRNS, buf, (png_size_t)2);
}
+
else if (color_type == PNG_COLOR_TYPE_RGB)
{
/* Three 16 bit values */
png_save_uint_16(buf, tran->red);
png_save_uint_16(buf + 2, tran->green);
png_save_uint_16(buf + 4, tran->blue);
+#ifdef PNG_WRITE_16BIT_SUPPORTED
if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4]))
+#else
+ if (buf[0] | buf[2] | buf[4])
+#endif
{
png_warning(png_ptr,
"Ignoring attempt to write 16-bit tRNS chunk when bit_depth is 8");
return;
}
- png_write_chunk(png_ptr, (png_bytep)png_tRNS, buf, (png_size_t)6);
+
+ png_write_complete_chunk(png_ptr, png_tRNS, buf, (png_size_t)6);
}
+
else
{
png_warning(png_ptr, "Can't write tRNS with an alpha channel");
@@ -1149,9 +1418,8 @@
#ifdef PNG_WRITE_bKGD_SUPPORTED
/* Write the background chunk */
void /* PRIVATE */
-png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
+png_write_bKGD(png_structp png_ptr, png_const_color_16p back, int color_type)
{
- PNG_bKGD;
png_byte buf[6];
png_debug(1, "in png_write_bKGD");
@@ -1168,32 +1436,43 @@
png_warning(png_ptr, "Invalid background palette index");
return;
}
+
buf[0] = back->index;
- png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)1);
+ png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)1);
}
+
else if (color_type & PNG_COLOR_MASK_COLOR)
{
png_save_uint_16(buf, back->red);
png_save_uint_16(buf + 2, back->green);
png_save_uint_16(buf + 4, back->blue);
+#ifdef PNG_WRITE_16BIT_SUPPORTED
if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4]))
+#else
+ if (buf[0] | buf[2] | buf[4])
+#endif
{
png_warning(png_ptr,
- "Ignoring attempt to write 16-bit bKGD chunk when bit_depth is 8");
+ "Ignoring attempt to write 16-bit bKGD chunk when bit_depth is 8");
+
return;
}
- png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)6);
+
+ png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)6);
}
+
else
{
if (back->gray >= (1 << png_ptr->bit_depth))
{
png_warning(png_ptr,
- "Ignoring attempt to write bKGD chunk out-of-range for bit_depth");
+ "Ignoring attempt to write bKGD chunk out-of-range for bit_depth");
+
return;
}
+
png_save_uint_16(buf, back->gray);
- png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)2);
+ png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)2);
}
}
#endif
@@ -1201,9 +1480,8 @@
#ifdef PNG_WRITE_hIST_SUPPORTED
/* Write the histogram */
void /* PRIVATE */
-png_write_hIST(png_structp png_ptr, png_uint_16p hist, int num_hist)
+png_write_hIST(png_structp png_ptr, png_const_uint_16p hist, int num_hist)
{
- PNG_hIST;
int i;
png_byte buf[3];
@@ -1212,18 +1490,20 @@
if (num_hist > (int)png_ptr->num_palette)
{
png_debug2(3, "num_hist = %d, num_palette = %d", num_hist,
- png_ptr->num_palette);
+ png_ptr->num_palette);
+
png_warning(png_ptr, "Invalid number of histogram entries specified");
return;
}
- png_write_chunk_start(png_ptr, (png_bytep)png_hIST,
- (png_uint_32)(num_hist * 2));
+ png_write_chunk_header(png_ptr, png_hIST, (png_uint_32)(num_hist * 2));
+
for (i = 0; i < num_hist; i++)
{
png_save_uint_16(buf, hist[i]);
png_write_chunk_data(png_ptr, buf, (png_size_t)2);
}
+
png_write_chunk_end(png_ptr);
}
#endif
@@ -1241,9 +1521,10 @@
* static keywords without having to have duplicate copies of the strings.
*/
png_size_t /* PRIVATE */
-png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
+png_check_keyword(png_structp png_ptr, png_const_charp key, png_charpp new_key)
{
png_size_t key_len;
+ png_const_charp ikp;
png_charp kp, dp;
int kflag;
int kwarn=0;
@@ -1261,6 +1542,7 @@
png_debug1(2, "Keyword to be checked is '%s'", key);
*new_key = (png_charp)png_malloc_warn(png_ptr, (png_uint_32)(key_len + 2));
+
if (*new_key == NULL)
{
png_warning(png_ptr, "Out of memory while procesing keyword");
@@ -1268,25 +1550,22 @@
}
/* Replace non-printing characters with a blank and print a warning */
- for (kp = key, dp = *new_key; *kp != '\0'; kp++, dp++)
+ for (ikp = key, dp = *new_key; *ikp != '\0'; ikp++, dp++)
{
- if ((png_byte)*kp < 0x20 ||
- ((png_byte)*kp > 0x7E && (png_byte)*kp < 0xA1))
+ if ((png_byte)*ikp < 0x20 ||
+ ((png_byte)*ikp > 0x7E && (png_byte)*ikp < 0xA1))
{
-#ifdef PNG_STDIO_SUPPORTED
- char msg[40];
+ PNG_WARNING_PARAMETERS(p)
- png_snprintf(msg, 40,
- "invalid keyword character 0x%02X", (png_byte)*kp);
- png_warning(png_ptr, msg);
-#else
- png_warning(png_ptr, "invalid character in keyword");
-#endif
+ png_warning_parameter_unsigned(p, 1, PNG_NUMBER_FORMAT_02x,
+ (png_byte)*ikp);
+ png_formatted_warning(png_ptr, p, "invalid keyword character 0x@1");
*dp = ' ';
}
+
else
{
- *dp = *kp;
+ *dp = *ikp;
}
}
*dp = '\0';
@@ -1327,11 +1606,13 @@
*(dp++) = *kp;
kflag = 1;
}
+
else if (*kp == ' ')
{
key_len--;
- kwarn=1;
+ kwarn = 1;
}
+
else
{
*(dp++) = *kp;
@@ -1362,10 +1643,9 @@
#ifdef PNG_WRITE_tEXt_SUPPORTED
/* Write a tEXt chunk */
void /* PRIVATE */
-png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text,
- png_size_t text_len)
+png_write_tEXt(png_structp png_ptr, png_const_charp key, png_const_charp text,
+ png_size_t text_len)
{
- PNG_tEXt;
png_size_t key_len;
png_charp new_key;
@@ -1376,12 +1656,13 @@
if (text == NULL || *text == '\0')
text_len = 0;
+
else
text_len = png_strlen(text);
/* Make sure we include the 0 after the key */
- png_write_chunk_start(png_ptr, (png_bytep)png_tEXt,
- (png_uint_32)(key_len + text_len + 1));
+ png_write_chunk_header(png_ptr, png_tEXt,
+ (png_uint_32)(key_len + text_len + 1));
/*
* We leave it to the application to meet PNG-1.0 requirements on the
* contents of the text. PNG-1.0 through PNG-1.2 discourage the use of
@@ -1389,9 +1670,11 @@
* The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG.
*/
png_write_chunk_data(png_ptr, (png_bytep)new_key,
- (png_size_t)(key_len + 1));
+ (png_size_t)(key_len + 1));
+
if (text_len)
- png_write_chunk_data(png_ptr, (png_bytep)text, (png_size_t)text_len);
+ png_write_chunk_data(png_ptr, (png_const_bytep)text,
+ (png_size_t)text_len);
png_write_chunk_end(png_ptr);
png_free(png_ptr, new_key);
@@ -1401,12 +1684,11 @@
#ifdef PNG_WRITE_zTXt_SUPPORTED
/* Write a compressed text chunk */
void /* PRIVATE */
-png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text,
- png_size_t text_len, int compression)
+png_write_zTXt(png_structp png_ptr, png_const_charp key, png_const_charp text,
+ png_size_t text_len, int compression)
{
- PNG_zTXt;
png_size_t key_len;
- char buf[1];
+ png_byte buf;
png_charp new_key;
compression_state comp;
@@ -1418,7 +1700,7 @@
comp.input = NULL;
comp.input_len = 0;
- if ((key_len = png_check_keyword(png_ptr, key, &new_key))==0)
+ if ((key_len = png_check_keyword(png_ptr, key, &new_key)) == 0)
{
png_free(png_ptr, new_key);
return;
@@ -1438,17 +1720,22 @@
&comp);
/* Write start of chunk */
- png_write_chunk_start(png_ptr, (png_bytep)png_zTXt,
- (png_uint_32)(key_len+text_len + 2));
+ png_write_chunk_header(png_ptr, png_zTXt,
+ (png_uint_32)(key_len+text_len + 2));
+
/* Write key */
png_write_chunk_data(png_ptr, (png_bytep)new_key,
- (png_size_t)(key_len + 1));
+ (png_size_t)(key_len + 1));
+
png_free(png_ptr, new_key);
- buf[0] = (png_byte)compression;
+ buf = (png_byte)compression;
+
/* Write compression */
- png_write_chunk_data(png_ptr, (png_bytep)buf, (png_size_t)1);
+ png_write_chunk_data(png_ptr, &buf, (png_size_t)1);
+
/* Write the compressed data */
+ comp.input_len = text_len;
png_write_compressed_data_out(png_ptr, &comp);
/* Close the chunk */
@@ -1459,10 +1746,9 @@
#ifdef PNG_WRITE_iTXt_SUPPORTED
/* Write an iTXt chunk */
void /* PRIVATE */
-png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
- png_charp lang, png_charp lang_key, png_charp text)
+png_write_iTXt(png_structp png_ptr, int compression, png_const_charp key,
+ png_const_charp lang, png_const_charp lang_key, png_const_charp text)
{
- PNG_iTXt;
png_size_t lang_len, key_len, lang_key_len, text_len;
png_charp new_lang;
png_charp new_key = NULL;
@@ -1476,10 +1762,10 @@
comp.output_ptr = NULL;
comp.input = NULL;
- if ((key_len = png_check_keyword(png_ptr, key, &new_key))==0)
+ if ((key_len = png_check_keyword(png_ptr, key, &new_key)) == 0)
return;
- if ((lang_len = png_check_keyword(png_ptr, lang, &new_lang))==0)
+ if ((lang_len = png_check_keyword(png_ptr, lang, &new_lang)) == 0)
{
png_warning(png_ptr, "Empty language field in iTXt chunk");
new_lang = NULL;
@@ -1488,24 +1774,26 @@
if (lang_key == NULL)
lang_key_len = 0;
+
else
lang_key_len = png_strlen(lang_key);
if (text == NULL)
text_len = 0;
+
else
text_len = png_strlen(text);
/* Compute the compressed data; do it now for the length */
- text_len = png_text_compress(png_ptr, text, text_len, compression-2,
- &comp);
+ text_len = png_text_compress(png_ptr, text, text_len, compression - 2,
+ &comp);
/* Make sure we include the compression flag, the compression byte,
- * and the NULs after the key, lang, and lang_key parts */
+ * and the NULs after the key, lang, and lang_key parts
+ */
- png_write_chunk_start(png_ptr, (png_bytep)png_iTXt,
- (png_uint_32)(
+ png_write_chunk_header(png_ptr, png_iTXt, (png_uint_32)(
5 /* comp byte, comp flag, terminators for key, lang and lang_key */
+ key_len
+ lang_len
@@ -1517,27 +1805,32 @@
* any non-Latin-1 characters except for NEWLINE. ISO PNG will forbid them.
* The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG.
*/
- png_write_chunk_data(png_ptr, (png_bytep)new_key,
- (png_size_t)(key_len + 1));
+ png_write_chunk_data(png_ptr, (png_bytep)new_key, (png_size_t)(key_len + 1));
/* Set the compression flag */
- if (compression == PNG_ITXT_COMPRESSION_NONE || \
+ if (compression == PNG_ITXT_COMPRESSION_NONE ||
compression == PNG_TEXT_COMPRESSION_NONE)
- cbuf[0] = 0;
+ cbuf[0] = 0;
+
else /* compression == PNG_ITXT_COMPRESSION_zTXt */
- cbuf[0] = 1;
+ cbuf[0] = 1;
+
/* Set the compression method */
cbuf[1] = 0;
+
png_write_chunk_data(png_ptr, cbuf, (png_size_t)2);
cbuf[0] = 0;
- png_write_chunk_data(png_ptr, (new_lang ? (png_bytep)new_lang : cbuf),
- (png_size_t)(lang_len + 1));
- png_write_chunk_data(png_ptr, (lang_key ? (png_bytep)lang_key : cbuf),
- (png_size_t)(lang_key_len + 1));
+ png_write_chunk_data(png_ptr, (new_lang ? (png_const_bytep)new_lang : cbuf),
+ (png_size_t)(lang_len + 1));
+
+ png_write_chunk_data(png_ptr, (lang_key ? (png_const_bytep)lang_key : cbuf),
+ (png_size_t)(lang_key_len + 1));
+
png_write_compressed_data_out(png_ptr, &comp);
png_write_chunk_end(png_ptr);
+
png_free(png_ptr, new_key);
png_free(png_ptr, new_lang);
}
@@ -1547,9 +1840,8 @@
/* Write the oFFs chunk */
void /* PRIVATE */
png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
- int unit_type)
+ int unit_type)
{
- PNG_oFFs;
png_byte buf[9];
png_debug(1, "in png_write_oFFs");
@@ -1561,18 +1853,18 @@
png_save_int_32(buf + 4, y_offset);
buf[8] = (png_byte)unit_type;
- png_write_chunk(png_ptr, (png_bytep)png_oFFs, buf, (png_size_t)9);
+ png_write_complete_chunk(png_ptr, png_oFFs, buf, (png_size_t)9);
}
#endif
#ifdef PNG_WRITE_pCAL_SUPPORTED
/* Write the pCAL chunk (described in the PNG extensions document) */
void /* PRIVATE */
png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
- png_int_32 X1, int type, int nparams, png_charp units, png_charpp params)
+ png_int_32 X1, int type, int nparams, png_const_charp units,
+ png_charpp params)
{
- PNG_pCAL;
png_size_t purpose_len, units_len, total_len;
- png_uint_32p params_len;
+ png_size_tp params_len;
png_byte buf[10];
png_charp new_purpose;
int i;
@@ -1588,36 +1880,35 @@
png_debug1(3, "pCAL units length = %d", (int)units_len);
total_len = purpose_len + units_len + 10;
- params_len = (png_uint_32p)png_malloc(png_ptr,
- (png_alloc_size_t)(nparams * png_sizeof(png_uint_32)));
+ params_len = (png_size_tp)png_malloc(png_ptr,
+ (png_alloc_size_t)(nparams * png_sizeof(png_size_t)));
/* Find the length of each parameter, making sure we don't count the
- null terminator for the last parameter. */
+ * null terminator for the last parameter.
+ */
for (i = 0; i < nparams; i++)
{
params_len[i] = png_strlen(params[i]) + (i == nparams - 1 ? 0 : 1);
png_debug2(3, "pCAL parameter %d length = %lu", i,
- (unsigned long) params_len[i]);
- total_len += (png_size_t)params_len[i];
+ (unsigned long)params_len[i]);
+ total_len += params_len[i];
}
png_debug1(3, "pCAL total length = %d", (int)total_len);
- png_write_chunk_start(png_ptr, (png_bytep)png_pCAL, (png_uint_32)total_len);
- png_write_chunk_data(png_ptr, (png_bytep)new_purpose,
- (png_size_t)purpose_len);
+ png_write_chunk_header(png_ptr, png_pCAL, (png_uint_32)total_len);
+ png_write_chunk_data(png_ptr, (png_const_bytep)new_purpose, purpose_len);
png_save_int_32(buf, X0);
png_save_int_32(buf + 4, X1);
buf[8] = (png_byte)type;
buf[9] = (png_byte)nparams;
png_write_chunk_data(png_ptr, buf, (png_size_t)10);
- png_write_chunk_data(png_ptr, (png_bytep)units, (png_size_t)units_len);
+ png_write_chunk_data(png_ptr, (png_const_bytep)units, (png_size_t)units_len);
png_free(png_ptr, new_purpose);
for (i = 0; i < nparams; i++)
{
- png_write_chunk_data(png_ptr, (png_bytep)params[i],
- (png_size_t)params_len[i]);
+ png_write_chunk_data(png_ptr, (png_const_bytep)params[i], params_len[i]);
}
png_free(png_ptr, params_len);
@@ -1627,32 +1918,10 @@
#ifdef PNG_WRITE_sCAL_SUPPORTED
/* Write the sCAL chunk */
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
void /* PRIVATE */
-png_write_sCAL(png_structp png_ptr, int unit, double width, double height)
+png_write_sCAL_s(png_structp png_ptr, int unit, png_const_charp width,
+ png_const_charp height)
{
- PNG_sCAL;
- char buf[64];
- png_size_t total_len;
-
- png_debug(1, "in png_write_sCAL");
-
- buf[0] = (char)unit;
- png_snprintf(buf + 1, 63, "%12.12e", width);
- total_len = 1 + png_strlen(buf + 1) + 1;
- png_snprintf(buf + total_len, 64-total_len, "%12.12e", height);
- total_len += png_strlen(buf + total_len);
-
- png_debug1(3, "sCAL total length = %u", (unsigned int)total_len);
- png_write_chunk(png_ptr, (png_bytep)png_sCAL, (png_bytep)buf, total_len);
-}
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
-void /* PRIVATE */
-png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
- png_charp height)
-{
- PNG_sCAL;
png_byte buf[64];
png_size_t wlen, hlen, total_len;
@@ -1661,6 +1930,7 @@
wlen = png_strlen(width);
hlen = png_strlen(height);
total_len = wlen + hlen + 2;
+
if (total_len > 64)
{
png_warning(png_ptr, "Can't write sCAL (buffer too small)");
@@ -1672,20 +1942,17 @@
png_memcpy(buf + wlen + 2, height, hlen); /* Do NOT append the '\0' here */
png_debug1(3, "sCAL total length = %u", (unsigned int)total_len);
- png_write_chunk(png_ptr, (png_bytep)png_sCAL, buf, total_len);
+ png_write_complete_chunk(png_ptr, png_sCAL, buf, total_len);
}
#endif
-#endif
-#endif
#ifdef PNG_WRITE_pHYs_SUPPORTED
/* Write the pHYs chunk */
void /* PRIVATE */
png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit,
- png_uint_32 y_pixels_per_unit,
- int unit_type)
+ png_uint_32 y_pixels_per_unit,
+ int unit_type)
{
- PNG_pHYs;
png_byte buf[9];
png_debug(1, "in png_write_pHYs");
@@ -1697,7 +1964,7 @@
png_save_uint_32(buf + 4, y_pixels_per_unit);
buf[8] = (png_byte)unit_type;
- png_write_chunk(png_ptr, (png_bytep)png_pHYs, buf, (png_size_t)9);
+ png_write_complete_chunk(png_ptr, png_pHYs, buf, (png_size_t)9);
}
#endif
@@ -1706,9 +1973,8 @@
* or png_convert_from_time_t(), or fill in the structure yourself.
*/
void /* PRIVATE */
-png_write_tIME(png_structp png_ptr, png_timep mod_time)
+png_write_tIME(png_structp png_ptr, png_const_timep mod_time)
{
- PNG_tIME;
png_byte buf[7];
png_debug(1, "in png_write_tIME");
@@ -1728,7 +1994,7 @@
buf[5] = mod_time->minute;
buf[6] = mod_time->second;
- png_write_chunk(png_ptr, (png_bytep)png_tIME, buf, (png_size_t)7);
+ png_write_complete_chunk(png_ptr, png_tIME, buf, (png_size_t)7);
}
#endif
@@ -1740,36 +2006,41 @@
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+ static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
- int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+ static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
- int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+ static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
- png_size_t buf_size;
+ png_alloc_size_t buf_size;
+ int usr_pixel_depth;
png_debug(1, "in png_write_start_row");
- buf_size = (png_size_t)(PNG_ROWBYTES(
- png_ptr->usr_channels*png_ptr->usr_bit_depth, png_ptr->width) + 1);
+ usr_pixel_depth = png_ptr->usr_channels * png_ptr->usr_bit_depth;
+ buf_size = PNG_ROWBYTES(usr_pixel_depth, png_ptr->width) + 1;
+
+ /* 1.5.6: added to allow checking in the row write code. */
+ png_ptr->transformed_pixel_depth = png_ptr->pixel_depth;
+ png_ptr->maximum_pixel_depth = (png_byte)usr_pixel_depth;
/* Set up row buffer */
- png_ptr->row_buf = (png_bytep)png_malloc(png_ptr,
- (png_alloc_size_t)buf_size);
+ png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, buf_size);
+
png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;
#ifdef PNG_WRITE_FILTER_SUPPORTED
/* Set up filtering buffer, if using this filter */
if (png_ptr->do_filter & PNG_FILTER_SUB)
{
- png_ptr->sub_row = (png_bytep)png_malloc(png_ptr,
- (png_alloc_size_t)(png_ptr->rowbytes + 1));
+ png_ptr->sub_row = (png_bytep)png_malloc(png_ptr, png_ptr->rowbytes + 1);
+
png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
}
@@ -1777,27 +2048,29 @@
if (png_ptr->do_filter & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH))
{
/* Set up previous row buffer */
- png_ptr->prev_row = (png_bytep)png_calloc(png_ptr,
- (png_alloc_size_t)buf_size);
+ png_ptr->prev_row = (png_bytep)png_calloc(png_ptr, buf_size);
if (png_ptr->do_filter & PNG_FILTER_UP)
{
png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
- (png_size_t)(png_ptr->rowbytes + 1));
+ png_ptr->rowbytes + 1);
+
png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
}
if (png_ptr->do_filter & PNG_FILTER_AVG)
{
png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
- (png_alloc_size_t)(png_ptr->rowbytes + 1));
+ png_ptr->rowbytes + 1);
+
png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
}
if (png_ptr->do_filter & PNG_FILTER_PAETH)
{
png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
- (png_size_t)(png_ptr->rowbytes + 1));
+ png_ptr->rowbytes + 1);
+
png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
}
}
@@ -1810,22 +2083,27 @@
if (!(png_ptr->transformations & PNG_INTERLACE))
{
png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 -
- png_pass_ystart[0]) / png_pass_yinc[0];
+ png_pass_ystart[0]) / png_pass_yinc[0];
+
png_ptr->usr_width = (png_ptr->width + png_pass_inc[0] - 1 -
- png_pass_start[0]) / png_pass_inc[0];
+ png_pass_start[0]) / png_pass_inc[0];
}
+
else
{
png_ptr->num_rows = png_ptr->height;
png_ptr->usr_width = png_ptr->width;
}
}
+
else
#endif
{
png_ptr->num_rows = png_ptr->height;
png_ptr->usr_width = png_ptr->width;
}
+
+ png_zlib_claim(png_ptr, PNG_ZLIB_FOR_IDAT);
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
png_ptr->zstream.next_out = png_ptr->zbuf;
}
@@ -1838,16 +2116,16 @@
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+ static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
- int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+ static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
- int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+ static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
int ret;
@@ -1870,24 +2148,30 @@
{
png_ptr->pass++;
}
+
else
{
/* Loop until we find a non-zero width or height pass */
do
{
png_ptr->pass++;
+
if (png_ptr->pass >= 7)
break;
+
png_ptr->usr_width = (png_ptr->width +
- png_pass_inc[png_ptr->pass] - 1 -
- png_pass_start[png_ptr->pass]) /
- png_pass_inc[png_ptr->pass];
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
+
png_ptr->num_rows = (png_ptr->height +
- png_pass_yinc[png_ptr->pass] - 1 -
- png_pass_ystart[png_ptr->pass]) /
- png_pass_yinc[png_ptr->pass];
+ png_pass_yinc[png_ptr->pass] - 1 -
+ png_pass_ystart[png_ptr->pass]) /
+ png_pass_yinc[png_ptr->pass];
+
if (png_ptr->transformations & PNG_INTERLACE)
break;
+
} while (png_ptr->usr_width == 0 || png_ptr->num_rows == 0);
}
@@ -1897,8 +2181,9 @@
{
if (png_ptr->prev_row != NULL)
png_memset(png_ptr->prev_row, 0,
- (png_size_t)(PNG_ROWBYTES(png_ptr->usr_channels*
- png_ptr->usr_bit_depth, png_ptr->width)) + 1);
+ (png_size_t)(PNG_ROWBYTES(png_ptr->usr_channels*
+ png_ptr->usr_bit_depth, png_ptr->width)) + 1);
+
return;
}
}
@@ -1910,6 +2195,7 @@
{
/* Tell the compressor we are done */
ret = deflate(&png_ptr->zstream, Z_FINISH);
+
/* Check for an error */
if (ret == Z_OK)
{
@@ -1921,10 +2207,12 @@
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
}
}
+
else if (ret != Z_STREAM_END)
{
if (png_ptr->zstream.msg != NULL)
png_error(png_ptr, png_ptr->zstream.msg);
+
else
png_error(png_ptr, "zlib error");
}
@@ -1934,10 +2222,10 @@
if (png_ptr->zstream.avail_out < png_ptr->zbuf_size)
{
png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size -
- png_ptr->zstream.avail_out);
+ png_ptr->zstream.avail_out);
}
- deflateReset(&png_ptr->zstream);
+ png_zlib_release(png_ptr);
png_ptr->zstream.data_type = Z_BINARY;
}
@@ -1955,10 +2243,10 @@
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+ static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
png_debug(1, "in png_do_write_interlace");
@@ -1981,6 +2269,7 @@
dp = row;
d = 0;
shift = 7;
+
for (i = png_pass_start[pass]; i < row_width;
i += png_pass_inc[pass])
{
@@ -1994,14 +2283,17 @@
*dp++ = (png_byte)d;
d = 0;
}
+
else
shift--;
}
if (shift != 7)
*dp = (png_byte)d;
+
break;
}
+
case 2:
{
png_bytep sp;
@@ -2015,6 +2307,7 @@
dp = row;
shift = 6;
d = 0;
+
for (i = png_pass_start[pass]; i < row_width;
i += png_pass_inc[pass])
{
@@ -2028,13 +2321,16 @@
*dp++ = (png_byte)d;
d = 0;
}
+
else
shift -= 2;
}
if (shift != 6)
- *dp = (png_byte)d;
+ *dp = (png_byte)d;
+
break;
}
+
case 4:
{
png_bytep sp;
@@ -2049,7 +2345,7 @@
shift = 4;
d = 0;
for (i = png_pass_start[pass]; i < row_width;
- i += png_pass_inc[pass])
+ i += png_pass_inc[pass])
{
sp = row + (png_size_t)(i >> 1);
value = (*sp >> ((1 - (int)(i & 0x01)) << 2)) & 0x0f;
@@ -2061,13 +2357,16 @@
*dp++ = (png_byte)d;
d = 0;
}
+
else
shift -= 4;
}
if (shift != 4)
*dp = (png_byte)d;
+
break;
}
+
default:
{
png_bytep sp;
@@ -2078,18 +2377,21 @@
/* Start at the beginning */
dp = row;
+
/* Find out how many bytes each pixel takes up */
pixel_bytes = (row_info->pixel_depth >> 3);
- /* Loop through the row, only looking at the pixels that
- matter */
+
+ /* Loop through the row, only looking at the pixels that matter */
for (i = png_pass_start[pass]; i < row_width;
i += png_pass_inc[pass])
{
/* Find out where the original pixel is */
sp = row + (png_size_t)i * pixel_bytes;
+
/* Move the pixel */
if (dp != sp)
png_memcpy(dp, sp, pixel_bytes);
+
/* Next pixel */
dp += pixel_bytes;
}
@@ -2098,11 +2400,12 @@
}
/* Set new row width */
row_info->width = (row_info->width +
- png_pass_inc[pass] - 1 -
- png_pass_start[pass]) /
- png_pass_inc[pass];
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
- row_info->width);
+ png_pass_inc[pass] - 1 -
+ png_pass_start[pass]) /
+ png_pass_inc[pass];
+
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
+ row_info->width);
}
}
#endif
@@ -2111,6 +2414,9 @@
* been specified by the application, and then writes the row out with the
* chosen filter.
*/
+static void png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row,
+ png_size_t row_bytes);
+
#define PNG_MAXSUM (((png_uint_32)(-1)) >> 1)
#define PNG_HISHIFT 10
#define PNG_LOMASK ((png_uint_32)0xffffL)
@@ -2123,9 +2429,9 @@
png_bytep prev_row, row_buf;
png_uint_32 mins, bpp;
png_byte filter_to_do = png_ptr->do_filter;
- png_uint_32 row_bytes = row_info->rowbytes;
+ png_size_t row_bytes = row_info->rowbytes;
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- int num_p_filters = (int)png_ptr->num_prev_filters;
+ int num_p_filters = png_ptr->num_prev_filters;
#endif
png_debug(1, "in png_write_find_filter");
@@ -2133,8 +2439,8 @@
#ifndef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->row_number == 0 && filter_to_do == PNG_ALL_FILTERS)
{
- /* These will never be selected so we need not test them. */
- filter_to_do &= ~(PNG_FILTER_UP | PNG_FILTER_PAETH);
+ /* These will never be selected so we need not test them. */
+ filter_to_do &= ~(PNG_FILTER_UP | PNG_FILTER_PAETH);
}
#endif
@@ -2160,11 +2466,14 @@
* computationally expensive).
*
* GRR 980525: consider also
+ *
* (1) minimum sum of absolute differences from running average (i.e.,
* keep running sum of non-absolute differences & count of bytes)
* [track dispersion, too? restart average if dispersion too large?]
+ *
* (1b) minimum sum of absolute differences from sliding average, probably
* with window size <= deflate window (usually 32K)
+ *
* (2) minimum sum of squared differences from zero or running average
* (i.e., ~ root-mean-square approach)
*/
@@ -2173,12 +2482,11 @@
/* We don't need to test the 'no filter' case if this is the only filter
* that has been chosen, as it doesn't actually do anything to the data.
*/
- if ((filter_to_do & PNG_FILTER_NONE) &&
- filter_to_do != PNG_FILTER_NONE)
+ if ((filter_to_do & PNG_FILTER_NONE) && filter_to_do != PNG_FILTER_NONE)
{
png_bytep rp;
png_uint_32 sum = 0;
- png_uint_32 i;
+ png_size_t i;
int v;
for (i = 0, rp = row_buf + 1; i < row_bytes; i++, rp++)
@@ -2201,9 +2509,10 @@
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE)
{
sumlo = (sumlo * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
+
sumhi = (sumhi * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
}
}
@@ -2212,12 +2521,14 @@
* it has the minimum possible computational cost - none).
*/
sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_NONE]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
+
sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_NONE]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
if (sumhi > PNG_HIMASK)
sum = PNG_MAXSUM;
+
else
sum = (sumhi << PNG_HISHIFT) + sumlo;
}
@@ -2230,17 +2541,20 @@
/* It's the only filter so no testing is needed */
{
png_bytep rp, lp, dp;
- png_uint_32 i;
+ png_size_t i;
+
for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp;
i++, rp++, dp++)
{
*dp = *rp;
}
+
for (lp = row_buf + 1; i < row_bytes;
i++, rp++, lp++, dp++)
{
*dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
}
+
best_row = png_ptr->sub_row;
}
@@ -2248,7 +2562,7 @@
{
png_bytep rp, dp, lp;
png_uint_32 sum = 0, lmins = mins;
- png_uint_32 i;
+ png_size_t i;
int v;
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
@@ -2268,19 +2582,22 @@
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_SUB)
{
lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
+
lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
}
}
lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
+
lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
if (lmhi > PNG_HIMASK)
lmins = PNG_MAXSUM;
+
else
lmins = (lmhi << PNG_HISHIFT) + lmlo;
}
@@ -2293,6 +2610,7 @@
sum += (v < 128) ? v : 256 - v;
}
+
for (lp = row_buf + 1; i < row_bytes;
i++, rp++, lp++, dp++)
{
@@ -2317,19 +2635,22 @@
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_SUB)
{
sumlo = (sumlo * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
+
sumhi = (sumhi * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
}
}
sumlo = (sumlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
+
sumhi = (sumhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
if (sumhi > PNG_HIMASK)
sum = PNG_MAXSUM;
+
else
sum = (sumhi << PNG_HISHIFT) + sumlo;
}
@@ -2346,14 +2667,15 @@
if (filter_to_do == PNG_FILTER_UP)
{
png_bytep rp, dp, pp;
- png_uint_32 i;
+ png_size_t i;
for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1,
- pp = prev_row + 1; i < row_bytes;
- i++, rp++, pp++, dp++)
+ pp = prev_row + 1; i < row_bytes;
+ i++, rp++, pp++, dp++)
{
*dp = (png_byte)(((int)*rp - (int)*pp) & 0xff);
}
+
best_row = png_ptr->up_row;
}
@@ -2361,7 +2683,7 @@
{
png_bytep rp, dp, pp;
png_uint_32 sum = 0, lmins = mins;
- png_uint_32 i;
+ png_size_t i;
int v;
@@ -2378,26 +2700,29 @@
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_UP)
{
lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
+
lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
}
}
lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_UP]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
+
lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_UP]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
if (lmhi > PNG_HIMASK)
lmins = PNG_MAXSUM;
+
else
lmins = (lmhi << PNG_HISHIFT) + lmlo;
}
#endif
for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1,
- pp = prev_row + 1; i < row_bytes; i++)
+ pp = prev_row + 1; i < row_bytes; i++)
{
v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
@@ -2420,19 +2745,22 @@
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_UP)
{
sumlo = (sumlo * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
+
sumhi = (sumhi * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
}
}
sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_UP]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
+
sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_UP]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
if (sumhi > PNG_HIMASK)
sum = PNG_MAXSUM;
+
else
sum = (sumhi << PNG_HISHIFT) + sumlo;
}
@@ -2450,11 +2778,13 @@
{
png_bytep rp, dp, pp, lp;
png_uint_32 i;
+
for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1,
pp = prev_row + 1; i < bpp; i++)
{
*dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
}
+
for (lp = row_buf + 1; i < row_bytes; i++)
{
*dp++ = (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2))
@@ -2467,7 +2797,7 @@
{
png_bytep rp, dp, pp, lp;
png_uint_32 sum = 0, lmins = mins;
- png_uint_32 i;
+ png_size_t i;
int v;
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
@@ -2483,19 +2813,22 @@
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_AVG)
{
lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
+
lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
}
}
lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_AVG]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
+
lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_AVG]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
if (lmhi > PNG_HIMASK)
lmins = PNG_MAXSUM;
+
else
lmins = (lmhi << PNG_HISHIFT) + lmlo;
}
@@ -2508,10 +2841,11 @@
sum += (v < 128) ? v : 256 - v;
}
+
for (lp = row_buf + 1; i < row_bytes; i++)
{
v = *dp++ =
- (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2)) & 0xff);
+ (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2)) & 0xff);
sum += (v < 128) ? v : 256 - v;
@@ -2532,19 +2866,22 @@
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE)
{
sumlo = (sumlo * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
+
sumhi = (sumhi * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
}
}
sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_AVG]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
+
sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_AVG]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
if (sumhi > PNG_HIMASK)
sum = PNG_MAXSUM;
+
else
sum = (sumhi << PNG_HISHIFT) + sumlo;
}
@@ -2561,9 +2898,10 @@
if (filter_to_do == PNG_FILTER_PAETH)
{
png_bytep rp, dp, pp, cp, lp;
- png_uint_32 i;
+ png_size_t i;
+
for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1,
- pp = prev_row + 1; i < bpp; i++)
+ pp = prev_row + 1; i < bpp; i++)
{
*dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
}
@@ -2600,7 +2938,7 @@
{
png_bytep rp, dp, pp, cp, lp;
png_uint_32 sum = 0, lmins = mins;
- png_uint_32 i;
+ png_size_t i;
int v;
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
@@ -2616,26 +2954,29 @@
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_PAETH)
{
lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
+
lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
}
}
lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_PAETH]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
+
lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_PAETH]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
if (lmhi > PNG_HIMASK)
lmins = PNG_MAXSUM;
+
else
lmins = (lmhi << PNG_HISHIFT) + lmlo;
}
#endif
for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1,
- pp = prev_row + 1; i < bpp; i++)
+ pp = prev_row + 1; i < bpp; i++)
{
v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
@@ -2668,10 +3009,13 @@
pa = abs(p - a);
pb = abs(p - b);
pc = abs(p - c);
+
if (pa <= pb && pa <= pc)
p = a;
+
else if (pb <= pc)
p = b;
+
else
p = c;
#endif /* PNG_SLOW_PAETH */
@@ -2697,19 +3041,22 @@
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_PAETH)
{
sumlo = (sumlo * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
+
sumhi = (sumhi * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
+ PNG_WEIGHT_SHIFT;
}
}
sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_PAETH]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
+
sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_PAETH]) >>
- PNG_COST_SHIFT;
+ PNG_COST_SHIFT;
if (sumhi > PNG_HIMASK)
sum = PNG_MAXSUM;
+
else
sum = (sumhi << PNG_HISHIFT) + sumlo;
}
@@ -2721,9 +3068,9 @@
}
}
#endif /* PNG_WRITE_FILTER_SUPPORTED */
- /* Do the actual writing of the filtered row data from the chosen filter. */
- png_write_filtered_row(png_ptr, best_row);
+ /* Do the actual writing of the filtered row data from the chosen filter. */
+ png_write_filtered_row(png_ptr, best_row, row_info->rowbytes+1);
#ifdef PNG_WRITE_FILTER_SUPPORTED
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
@@ -2731,10 +3078,12 @@
if (png_ptr->num_prev_filters > 0)
{
int j;
+
for (j = 1; j < num_p_filters; j++)
{
png_ptr->prev_filters[j] = png_ptr->prev_filters[j - 1];
}
+
png_ptr->prev_filters[j] = best_row[0];
}
#endif
@@ -2743,8 +3092,9 @@
/* Do the actual writing of a previously filtered row. */
-void /* PRIVATE */
-png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row)
+static void
+png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row,
+ png_size_t avail/*includes filter byte*/)
{
png_debug(1, "in png_write_filtered_row");
@@ -2752,19 +3102,45 @@
/* Set up the zlib input buffer */
png_ptr->zstream.next_in = filtered_row;
- png_ptr->zstream.avail_in = (uInt)png_ptr->row_info.rowbytes + 1;
+ png_ptr->zstream.avail_in = 0;
/* Repeat until we have compressed all the data */
do
{
int ret; /* Return of zlib */
+ /* Record the number of bytes available - zlib supports at least 65535
+ * bytes at one step, depending on the size of the zlib type 'uInt', the
+ * maximum size zlib can write at once is ZLIB_IO_MAX (from pngpriv.h).
+ * Use this because on 16 bit systems 'rowbytes' can be up to 65536 (i.e.
+ * one more than 16 bits) and, in this case 'rowbytes+1' can overflow a
+ * uInt. ZLIB_IO_MAX can be safely reduced to cause zlib to be called
+ * with smaller chunks of data.
+ */
+ if (png_ptr->zstream.avail_in == 0)
+ {
+ if (avail > ZLIB_IO_MAX)
+ {
+ png_ptr->zstream.avail_in = ZLIB_IO_MAX;
+ avail -= ZLIB_IO_MAX;
+ }
+
+ else
+ {
+ /* So this will fit in the available uInt space: */
+ png_ptr->zstream.avail_in = (uInt)avail;
+ avail = 0;
+ }
+ }
+
/* Compress the data */
ret = deflate(&png_ptr->zstream, Z_NO_FLUSH);
+
/* Check for compression errors */
if (ret != Z_OK)
{
if (png_ptr->zstream.msg != NULL)
png_error(png_ptr, png_ptr->zstream.msg);
+
else
png_error(png_ptr, "zlib error");
}
@@ -2774,11 +3150,9 @@
{
/* Write the IDAT and reset the zlib output buffer */
png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size);
- png_ptr->zstream.next_out = png_ptr->zbuf;
- png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
}
/* Repeat until all data has been compressed */
- } while (png_ptr->zstream.avail_in);
+ } while (avail > 0 || png_ptr->zstream.avail_in > 0);
/* Swap the current and previous rows */
if (png_ptr->prev_row != NULL)
diff --git a/projects/owatcom/libpng.tgt b/projects/owatcom/libpng.tgt
new file mode 100644
index 0000000..4a9622e
--- /dev/null
+++ b/projects/owatcom/libpng.tgt
@@ -0,0 +1,383 @@
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diff --git a/projects/owatcom/libpng.wpj b/projects/owatcom/libpng.wpj
new file mode 100644
index 0000000..cddf9f1
--- /dev/null
+++ b/projects/owatcom/libpng.wpj
@@ -0,0 +1,92 @@
+40
+projectIdent
+0
+VpeMain
+1
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+256
+0
+8960
+9284
+2
+MProject
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+# Locations of zlib and (if required) awk (change as required:)
+set zlib=..\..\..\zlib
+set awk=
+#
+@if not exist pngconfig.dfa $(MAKE) $(__MAKEOPTS__) -f pngconfig.mak defaults
+@if exist config.inf type config.inf
+@echo Checking for the libpng configuration file pnglibconf.h
+$(MAKE) $(__MAKEOPTS__) -f pngconfig.mak
+4
+MCommand
+19
+@type pngconfig.inf
+3
+5
+WFileName
+10
+libpng.tgt
+6
+WFileName
+11
+pngtest.tgt
+7
+WFileName
+12
+pngvalid.tgt
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+3
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diff --git a/projects/owatcom/pngconfig.mak b/projects/owatcom/pngconfig.mak
new file mode 100644
index 0000000..054a3fc
--- /dev/null
+++ b/projects/owatcom/pngconfig.mak
@@ -0,0 +1,160 @@
+# This is an OpenWatcom make file which builds pnglibconf.h - the libpng
+# configuration header. You can ignore this file if you don't need to
+# configure libpng; a default configuration will be built.
+#
+# For more information build libpng.wpj under the IDE and then read the
+# generated files:
+#
+# config.inf: Basic configuration information for a standard build.
+# pngconfig.dfa: Advanced configuration for non-standard libpng builds.
+#
+DELETE=rm -f
+ECHO=echo
+COPY=copy
+#
+# If your configuration needs to test compiler flags when building
+# pnglibconf.h you may need to override the following on the wmake command
+# line:
+CFLAGS=
+CC=wcl386
+CPP=$(CC) -pw0
+#
+# Read awk from the environment if set, else it can be set on the command
+# line (the default approach is to set the %awk% environment variable in the
+# IDE libpng.wpj 'before' rule - this setting is local.)
+!ifdef %awk
+AWK=$(%awk)
+!endif
+#
+# pnglibconf.h must exist in the source directory, this is the final rule
+# which copies the local built version (and this is the default target for
+# this makefile.)
+..\..\pnglibconf.h: pnglibconf.h
+ $(COPY) pnglibconf.h $@
+
+!ifdef AWK
+# CPPFLAGS should contain the options to control the result,
+# but DEFS and CFLAGS are also supported here, override
+# as appropriate
+DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)
+
+pnglibconf.h: pnglibconf.dfn
+ $(DELETE) $@ dfn.c dfn1.out dfn2.out
+ $(ECHO) $#include "pnglibconf.dfn" >dfn.c
+ $(CPP) $(DFNFLAGS) dfn.c >dfn1.out
+ $(AWK) -f << dfn1.out >dfn2.out
+/^.*PNG_DEFN_MAGIC-.*-PNG_DEFN_END.*$$/{
+ sub(/^.*PNG_DEFN_MAGIC-/, "")
+ sub(/ *-PNG_DEFN_END.*$$/, "")
+ gsub(/ *@@@ */, "")
+ print
+}
+<<
+ $(COPY) dfn2.out $@
+ @type << >pngconfig.inf
+This is a locally configurable build of libpng.lib; for configuration
+instructions consult and edit projects/openwatcom/pngconfig.dfa
+<<
+ $(DELETE) dfn.c dfn1.out dfn2.out
+
+pnglibconf.dfn: ..\..\scripts\pnglibconf.dfa ..\..\scripts\options.awk pngconfig.dfa ..\..\pngconf.h
+ $(DELETE) $@ dfn1.out dfn2.out
+ $(AWK) -f ..\..\scripts\options.awk out=dfn1.out version=search ..\..\pngconf.h ..\..\scripts\pnglibconf.dfa pngconfig.dfa $(DFA_XTRA) 1>&2
+ $(AWK) -f ..\..\scripts\options.awk out=dfn2.out dfn1.out 1>&2
+ $(COPY) dfn2.out $@
+ $(DELETE) dfn1.out dfn2.out
+
+!else
+# The following lines are used to copy scripts\pnglibconf.h.prebuilt and make
+# the required change to the calling convention.
+#
+# By default libpng is built to use the __cdecl calling convention on
+# Windows. This gives compatibility with MSVC and GCC. Unfortunately it
+# does not work with OpenWatcom because OpenWatcom implements longjmp using
+# the __watcall convention (compared with both MSVC and GCC which use __cdecl
+# for library functions.)
+#
+# Thus the default must be changed to build on OpenWatcom and, once changed,
+# the result will not be compatible with applications built using other
+# compilers (in fact attempts to build will fail at compile time.)
+#
+pnglibconf.h: ..\..\scripts\pnglibconf.h.prebuilt .existsonly
+ @$(ECHO) .
+ @$(ECHO) .
+ @$(ECHO) $$(AWK) NOT AVAILABLE: COPYING scripts\pnglibconf.h.prebuilt
+ @$(ECHO) .
+ @$(ECHO) .
+ vi -q -k ":1,$$s/PNG_API_RULE 0$$/PNG_API_RULE 2/\n:w! $@\n:q!\n" ..\..\scripts\pnglibconf.h.prebuilt
+ @$(ECHO) .
+ @$(ECHO) .
+ @$(ECHO) YOU HAVE A DEFAULT CONFIGURATION BECAUSE YOU DO NOT HAVE AWK!
+ @$(ECHO) .
+ @$(ECHO) .
+ @type << >pngconfig.inf
+This is the default configuration of libpng.lib, if you wish to
+change the configuration please consult the instructions in
+projects/owatcom/pngconfig.dfa.
+<<
+
+!endif
+
+# Make the default files
+defaults: .symbolic
+ @$(COPY) << config.inf
+$# The libpng project is incompletely configured. To complete configuration
+$# please complete the following steps:
+$#
+$# 1) Edit the 'before' rule of libpng.wpj (from the IDE) to define the
+$# locations of the zlib include file zlib.h and the built zlib library,
+$# zlib.lib.
+$#
+$# 2) If you want to change libpng to a non-standard configuration also
+$# change the definition of 'awk' in the before rule to the name of your
+$# awk command. For more instructions on configuration read
+$# pngconfig.dfa.
+$#
+$# 3) Delete this file (config.inf).
+<<
+ @$(COPY) << pngconfig.dfa
+$# pngconfig.dfa: this file contains configuration options for libpng.
+$# If emtpy the standard configuration will be built. For this file to be
+$# used a working version of the program 'awk' is required and the program
+$# must be identified in the 'before' rule of the project.
+$#
+$# If you don't already have 'awk', or the version of awk you have seems not
+$# to work, download Brian Kernighan's awk (Brian Kernighan is the author of
+$# awk.) You can find source code and a built executable (called awk95.exe)
+$# here:
+$#
+$# http://www.cs.princeton.edu/~bwk/btl.mirror/
+$#
+$# The executable works just fine.
+$#
+$# If build issues errors after a change to pngconfig.dfa you have entered
+$# inconsistent feature requests, or even malformed requests, in
+$# pngconfig.dfa. The error messages from awk should be comprehensible, but
+$# if not simply go back to the start (nothing but comments in this file) and
+$# enter configuration lines one by one until one produces an error. (Or, of
+$# course, do the standard binary chop.)
+$#
+$# You need to rebuild everything after a change to pnglibconf.dfa - i.e. you
+$# must do Actions/Mark All Targets for Remake. This is because the compiler
+$# generated dependency information (as of OpenWatcom 1.9) does not record the
+$# dependency on pnglibconf.h correctly.
+$#
+$# If awk isn't set then this file is bypassed. If you just want the standard
+$# configuration it is automatically produced from the distributed version
+$# (scripts\pnglibconf.h.prebuilt) by editting PNG_API_RULE to 2 (to force use
+$# of the OpenWatcom library calling convention.)
+$#
+<<
+
+clean:: .symbolic
+ $(DELETE) ..\..\pnglibconf.h pnglibconf.* dfn.c *.out pngconfig.inf
+ $(DELETE) *.obj *.mbr *.sym *.err *.pch libpng.mk
+ $(DELETE) libpng.lib libpng.lbr libpng.lb1 libpng.cbr libpng.mk1
+ $(DELETE) pngtest.exe pngtest.map pngtest.lk1 pngtest.mk1
+ $(DELETE) pngvalid.exe pngvalid.map pngvalid.lk1 pngvalid.mk1
+
+distclean:: clean .symbolic
+ $(DELETE) zlib.inf awk.inf config.inf pngconfig.dfa
diff --git a/projects/owatcom/pngtest.tgt b/projects/owatcom/pngtest.tgt
new file mode 100644
index 0000000..211f1a7
--- /dev/null
+++ b/projects/owatcom/pngtest.tgt
@@ -0,0 +1,179 @@
+40
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+0
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+5
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+0
+5
+MCommand
+34
+cd ..\..
+projects\owatcom\pngtest
+6
+MItem
+11
+pngtest.exe
+7
+WString
+4
+NEXE
+8
+WVList
+4
+9
+MVState
+10
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+7
+WINLINK
+11
+WString
+28
+?????Library directories(;):
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+WString
+8
+$(%zlib)
+0
+13
+MVState
+14
+WString
+7
+WINLINK
+15
+WString
+18
+?????Libraries(,):
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+19
+libpng.lib zlib.lib
+0
+17
+MVState
+18
+WString
+7
+WINLINK
+19
+WString
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+?????Library directories(;):
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+8
+$(%zlib)
+0
+21
+MVState
+22
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+7
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+23
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+0
+25
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+1
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+29
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+MVState
+31
+WString
+3
+WCC
+32
+WString
+25
+n????Include directories:
+1
+33
+WString
+39
+"$(%zlib);$(%watcom)/h;$(%watcom)/h/nt"
+0
+34
+MVState
+35
+WString
+3
+WCC
+36
+WString
+25
+n????Include directories:
+0
+37
+WString
+39
+"$(%zlib);$(%watcom)/h;$(%watcom)/h/nt"
+0
+38
+WVList
+0
+-1
+1
+1
+0
+39
+MItem
+15
+..\..\pngtest.c
+40
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+4
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+WVList
+0
+42
+WVList
+0
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+1
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diff --git a/projects/owatcom/pngvalid.tgt b/projects/owatcom/pngvalid.tgt
new file mode 100644
index 0000000..1e78e75
--- /dev/null
+++ b/projects/owatcom/pngvalid.tgt
@@ -0,0 +1,210 @@
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+pngvalid
+6
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+7
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+6
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+11
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+4
+768k
+0
+13
+MVState
+14
+WString
+7
+WINLINK
+15
+WString
+28
+?????Library directories(;):
+1
+16
+WString
+8
+$(%zlib)
+0
+17
+MVState
+18
+WString
+7
+WINLINK
+19
+WString
+18
+?????Libraries(,):
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+20
+WString
+19
+libpng.lib zlib.lib
+0
+21
+MVState
+22
+WString
+7
+WINLINK
+23
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+11
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+0
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+26
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+7
+WINLINK
+27
+WString
+28
+?????Library directories(;):
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+28
+WString
+8
+$(%zlib)
+0
+29
+MVState
+30
+WString
+7
+WINLINK
+31
+WString
+18
+?????Libraries(,):
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+32
+WString
+19
+libpng.lib zlib.lib
+0
+33
+WVList
+0
+-1
+1
+1
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+2
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+36
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+37
+WVList
+2
+38
+MVState
+39
+WString
+3
+WCC
+40
+WString
+25
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+1
+41
+WString
+39
+"$(%zlib);$(%watcom)/h;$(%watcom)/h/nt"
+0
+42
+MVState
+43
+WString
+3
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+39
+"$(%zlib);$(%watcom)/h;$(%watcom)/h/nt"
+0
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+0
+-1
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+MItem
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+48
+WString
+4
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diff --git a/projects/visualc6/libpng.dsw b/projects/visualc6/libpng.dsw
deleted file mode 100644
index 2a98646..0000000
--- a/projects/visualc6/libpng.dsw
+++ /dev/null
@@ -1,59 +0,0 @@
-Microsoft Developer Studio Workspace File, Format Version 6.00
-# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
-
-###############################################################################
-
-Project: "libpng"=".\libpng.dsp" - Package Owner=<4>
-
-Package=<5>
-{{{
-}}}
-
-Package=<4>
-{{{
- Begin Project Dependency
- Project_Dep_Name zlib
- End Project Dependency
-}}}
-
-###############################################################################
-
-Project: "pngtest"=".\pngtest.dsp" - Package Owner=<4>
-
-Package=<5>
-{{{
-}}}
-
-Package=<4>
-{{{
- Begin Project Dependency
- Project_Dep_Name libpng
- End Project Dependency
-}}}
-
-###############################################################################
-
-Project: "zlib"="..\..\..\zlib\projects\visualc6\zlib.dsp" - Package Owner=<4>
-
-Package=<5>
-{{{
-}}}
-
-Package=<4>
-{{{
-}}}
-
-###############################################################################
-
-Global:
-
-Package=<5>
-{{{
-}}}
-
-Package=<3>
-{{{
-}}}
-
-###############################################################################
-
diff --git a/projects/visualc71/PRJ0041.mak b/projects/visualc71/PRJ0041.mak
index e15e12b..c7a68b5 100644
--- a/projects/visualc71/PRJ0041.mak
+++ b/projects/visualc71/PRJ0041.mak
@@ -9,7 +9,7 @@
$(IntDir)\strings.h \
$(IntDir)\unistd.h \
$(IntDir)\unixio.h
-
+
$(IntDir)\alloc.h \
$(IntDir)\fp.h \
$(IntDir)\m68881.h \
diff --git a/projects/visualc71/README.txt b/projects/visualc71/README.txt
index 755a82a..625eefc 100644
--- a/projects/visualc71/README.txt
+++ b/projects/visualc71/README.txt
@@ -37,9 +37,9 @@
This project builds the libpng binaries as follows:
-* Win32_DLL_Release\libpng14.dll DLL build
-* Win32_DLL_Debug\libpng14d.dll DLL build (debug version)
-* Win32_DLL_VB\libpng14vb.dll DLL build for Visual Basic, using stdcall
+* Win32_DLL_Release\libpng15.dll DLL build
+* Win32_DLL_Debug\libpng15d.dll DLL build (debug version)
+* Win32_DLL_VB\libpng15vb.dll DLL build for Visual Basic, using stdcall
* Win32_LIB_Release\libpng.lib static build
* Win32_LIB_Debug\libpngd.lib static build (debug version)
diff --git a/projects/visualc71/libpng.sln b/projects/visualc71/libpng.sln
index adce68a..eeb101f 100644
--- a/projects/visualc71/libpng.sln
+++ b/projects/visualc71/libpng.sln
@@ -1,60 +1,60 @@
-Microsoft Visual Studio Solution File, Format Version 8.00
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libpng", "libpng.vcproj", "{0008960E-E0DD-41A6-8265-00B31DDB4C21}"
- ProjectSection(ProjectDependencies) = postProject
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0} = {2D4F8105-7D21-454C-9932-B47CAB71A5C0}
- EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pngtest", "pngtest.vcproj", "{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}"
- ProjectSection(ProjectDependencies) = postProject
- {0008960E-E0DD-41A6-8265-00B31DDB4C21} = {0008960E-E0DD-41A6-8265-00B31DDB4C21}
- EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlib", "zlib.vcproj", "{2D4F8105-7D21-454C-9932-B47CAB71A5C0}"
- ProjectSection(ProjectDependencies) = postProject
- EndProjectSection
-EndProject
-Global
- GlobalSection(SolutionConfiguration) = preSolution
- DLL Debug = DLL Debug
- DLL Release = DLL Release
- DLL VB = DLL VB
- LIB Debug = LIB Debug
- LIB Release = LIB Release
- EndGlobalSection
- GlobalSection(ProjectConfiguration) = postSolution
- {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Debug.ActiveCfg = DLL Debug|Win32
- {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Debug.Build.0 = DLL Debug|Win32
- {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Release.ActiveCfg = DLL Release|Win32
- {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Release.Build.0 = DLL Release|Win32
- {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL VB.ActiveCfg = DLL VB|Win32
- {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL VB.Build.0 = DLL VB|Win32
- {0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Debug.ActiveCfg = LIB Debug|Win32
- {0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Debug.Build.0 = LIB Debug|Win32
- {0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Release.ActiveCfg = LIB Release|Win32
- {0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Release.Build.0 = LIB Release|Win32
- {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Debug.ActiveCfg = DLL Debug|Win32
- {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Debug.Build.0 = DLL Debug|Win32
- {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Release.ActiveCfg = DLL Release|Win32
- {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Release.Build.0 = DLL Release|Win32
- {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL VB.ActiveCfg = DLL VB|Win32
- {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL VB.Build.0 = DLL VB|Win32
- {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Debug.ActiveCfg = LIB Debug|Win32
- {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Debug.Build.0 = LIB Debug|Win32
- {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Release.ActiveCfg = LIB Release|Win32
- {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Release.Build.0 = LIB Release|Win32
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Debug.ActiveCfg = DLL Debug|Win32
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Debug.Build.0 = DLL Debug|Win32
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Release.ActiveCfg = DLL Release|Win32
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Release.Build.0 = DLL Release|Win32
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL VB.ActiveCfg = DLL Release|Win32
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL VB.Build.0 = DLL Release|Win32
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Debug.ActiveCfg = LIB Debug|Win32
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Debug.Build.0 = LIB Debug|Win32
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Release.ActiveCfg = LIB Release|Win32
- {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Release.Build.0 = LIB Release|Win32
- EndGlobalSection
- GlobalSection(ExtensibilityGlobals) = postSolution
- EndGlobalSection
- GlobalSection(ExtensibilityAddIns) = postSolution
- EndGlobalSection
-EndGlobal
+Microsoft Visual Studio Solution File, Format Version 8.00
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libpng", "libpng.vcproj", "{0008960E-E0DD-41A6-8265-00B31DDB4C21}"
+ ProjectSection(ProjectDependencies) = postProject
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0} = {2D4F8105-7D21-454C-9932-B47CAB71A5C0}
+ EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pngtest", "pngtest.vcproj", "{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}"
+ ProjectSection(ProjectDependencies) = postProject
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21} = {0008960E-E0DD-41A6-8265-00B31DDB4C21}
+ EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlib", "zlib.vcproj", "{2D4F8105-7D21-454C-9932-B47CAB71A5C0}"
+ ProjectSection(ProjectDependencies) = postProject
+ EndProjectSection
+EndProject
+Global
+ GlobalSection(SolutionConfiguration) = preSolution
+ DLL Debug = DLL Debug
+ DLL Release = DLL Release
+ DLL VB = DLL VB
+ LIB Debug = LIB Debug
+ LIB Release = LIB Release
+ EndGlobalSection
+ GlobalSection(ProjectConfiguration) = postSolution
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Debug.ActiveCfg = DLL Debug|Win32
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Debug.Build.0 = DLL Debug|Win32
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Release.ActiveCfg = DLL Release|Win32
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Release.Build.0 = DLL Release|Win32
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL VB.ActiveCfg = DLL VB|Win32
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL VB.Build.0 = DLL VB|Win32
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Debug.ActiveCfg = LIB Debug|Win32
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Debug.Build.0 = LIB Debug|Win32
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Release.ActiveCfg = LIB Release|Win32
+ {0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Release.Build.0 = LIB Release|Win32
+ {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Debug.ActiveCfg = DLL Debug|Win32
+ {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Debug.Build.0 = DLL Debug|Win32
+ {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Release.ActiveCfg = DLL Release|Win32
+ {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Release.Build.0 = DLL Release|Win32
+ {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL VB.ActiveCfg = DLL VB|Win32
+ {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL VB.Build.0 = DLL VB|Win32
+ {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Debug.ActiveCfg = LIB Debug|Win32
+ {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Debug.Build.0 = LIB Debug|Win32
+ {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Release.ActiveCfg = LIB Release|Win32
+ {FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Release.Build.0 = LIB Release|Win32
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Debug.ActiveCfg = DLL Debug|Win32
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Debug.Build.0 = DLL Debug|Win32
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Release.ActiveCfg = DLL Release|Win32
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Release.Build.0 = DLL Release|Win32
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL VB.ActiveCfg = DLL Release|Win32
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL VB.Build.0 = DLL Release|Win32
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Debug.ActiveCfg = LIB Debug|Win32
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Debug.Build.0 = LIB Debug|Win32
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Release.ActiveCfg = LIB Release|Win32
+ {2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Release.Build.0 = LIB Release|Win32
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ EndGlobalSection
+ GlobalSection(ExtensibilityAddIns) = postSolution
+ EndGlobalSection
+EndGlobal
diff --git a/projects/visualc71/libpng.vcproj b/projects/visualc71/libpng.vcproj
index e08346b..4c5acf9 100644
--- a/projects/visualc71/libpng.vcproj
+++ b/projects/visualc71/libpng.vcproj
@@ -1,437 +1,419 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
- ProjectType="Visual C++"
- Version="7.10"
- Name="libpng"
- RootNamespace="libpng">
- <Platforms>
- <Platform
- Name="Win32"/>
- </Platforms>
- <Configurations>
- <Configuration
- Name="DLL Release|Win32"
- OutputDirectory=".\Win32_DLL_Release"
- IntermediateDirectory=".\Win32_DLL_Release"
- ConfigurationType="2">
- <Tool
- Name="VCCLCompilerTool"
- InlineFunctionExpansion="1"
- AdditionalIncludeDirectories="..\..;..\..\scripts;..\..\..\zlib"
- PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL;_CRT_SECURE_NO_WARNINGS"
- StringPooling="TRUE"
- RuntimeLibrary="2"
- EnableFunctionLevelLinking="TRUE"
- UsePrecompiledHeader="3"
- PrecompiledHeaderThrough="png.h"
- WarningLevel="3"
- CompileAs="0"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLinkerTool"
- OutputFile="$(OutDir)/libpng14.dll"
- LinkIncremental="1"
- ModuleDefinitionFile="..\..\scripts\pngwin.def"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"
- PreprocessorDefinitions="NDEBUG"
- Culture="1033"
- AdditionalIncludeDirectories="..\..;..\..\scripts;..\..\..\zlib;$(IntDir)"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="DLL Debug|Win32"
- OutputDirectory=".\Win32_DLL_Debug"
- IntermediateDirectory=".\Win32_DLL_Debug"
- ConfigurationType="2">
- <Tool
- Name="VCCLCompilerTool"
- Optimization="0"
- AdditionalIncludeDirectories="..\..;..\..\scripts;..\..\..\zlib"
- PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_BUILD_DLL;ZLIB_DLL;_CRT_SECURE_NO_WARNINGS"
- BasicRuntimeChecks="3"
- RuntimeLibrary="3"
- UsePrecompiledHeader="3"
- PrecompiledHeaderThrough="png.h"
- WarningLevel="3"
- DebugInformationFormat="4"
- CompileAs="0"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLinkerTool"
- OutputFile="$(OutDir)/libpng14d.dll"
- ModuleDefinitionFile="..\..\scripts\pngwin.def"
- GenerateDebugInformation="TRUE"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"
- PreprocessorDefinitions="_DEBUG,PNG_DEBUG=1"
- Culture="1033"
- AdditionalIncludeDirectories="..\..;..\..\scripts;..\..\..\zlib;$(IntDir)"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="DLL VB|Win32"
- OutputDirectory=".\Win32_DLL_VB"
- IntermediateDirectory=".\Win32_DLL_VB"
- ConfigurationType="2">
- <Tool
- Name="VCCLCompilerTool"
- InlineFunctionExpansion="1"
- AdditionalIncludeDirectories="..\..;..\..\scripts;..\..\..\zlib"
- PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL;PNGAPI=__stdcall;PNG_NO_MODULEDEF;PNG_LIBPNG_SPECIALBUILD;PNG_USER_PRIVATEBUILD;_CRT_SECURE_NO_WARNINGS"
- StringPooling="TRUE"
- RuntimeLibrary="2"
- EnableFunctionLevelLinking="TRUE"
- UsePrecompiledHeader="3"
- PrecompiledHeaderThrough="png.h"
- WarningLevel="3"
- CompileAs="0"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLinkerTool"
- OutputFile="$(OutDir)/libpng14vb.dll"
- LinkIncremental="1"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"
- AdditionalOptions="/d PNG_NO_PEDANTIC_WARNINGS /d PNG_LIBPNG_DLLFNAME_POSTFIX=""""VB"""" /d PNG_LIBPNG_SPECIALBUILD=""""__stdcall calling convention used for exported functions"""""
- PreprocessorDefinitions="NDEBUG"
- Culture="1033"
- AdditionalIncludeDirectories="..\..;..\..\scripts;..\..\..\zlib;$(IntDir)"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="LIB Release|Win32"
- OutputDirectory=".\Win32_LIB_Release"
- IntermediateDirectory=".\Win32_LIB_Release"
- ConfigurationType="4">
- <Tool
- Name="VCCLCompilerTool"
- InlineFunctionExpansion="1"
- AdditionalIncludeDirectories="..\..;..\..\scripts;..\..\..\zlib"
- PreprocessorDefinitions="WIN32;NDEBUG;_CRT_SECURE_NO_WARNINGS"
- StringPooling="TRUE"
- RuntimeLibrary="0"
- EnableFunctionLevelLinking="TRUE"
- UsePrecompiledHeader="3"
- PrecompiledHeaderThrough="png.h"
- WarningLevel="3"
- CompileAs="0"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLibrarianTool"
- OutputFile="$(OutDir)/libpng.lib"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
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- Name="VCXMLDataGeneratorTool"/>
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- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
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- <Configuration
- Name="LIB Debug|Win32"
- OutputDirectory=".\Win32_LIB_Debug"
- IntermediateDirectory=".\Win32_LIB_Debug"
- ConfigurationType="4">
- <Tool
- Name="VCCLCompilerTool"
- Optimization="0"
- AdditionalIncludeDirectories="..\..;..\..\scripts;..\..\..\zlib"
- PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;_CRT_SECURE_NO_WARNINGS"
- BasicRuntimeChecks="3"
- RuntimeLibrary="1"
- UsePrecompiledHeader="3"
- PrecompiledHeaderThrough="png.h"
- WarningLevel="3"
- DebugInformationFormat="4"
- CompileAs="0"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLibrarianTool"
- OutputFile="$(OutDir)/libpngd.lib"/>
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- Name="VCPostBuildEventTool"/>
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- Name="VCPreBuildEventTool"/>
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- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- </Configurations>
- <References>
- </References>
- <Files>
- <Filter
- Name="Source Files"
- Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
- <File
- RelativePath="..\..\png.c">
- <FileConfiguration
- Name="DLL Release|Win32">
- <Tool
- Name="VCCLCompilerTool"
- UsePrecompiledHeader="0"/>
- </FileConfiguration>
- <FileConfiguration
- Name="DLL Debug|Win32">
- <Tool
- Name="VCCLCompilerTool"
- UsePrecompiledHeader="0"/>
- </FileConfiguration>
- <FileConfiguration
- Name="DLL VB|Win32">
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- Name="VCCLCompilerTool"
- UsePrecompiledHeader="0"/>
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- Name="LIB Release|Win32">
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- Name="VCCLCompilerTool"
- UsePrecompiledHeader="0"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Debug|Win32">
- <Tool
- Name="VCCLCompilerTool"
- UsePrecompiledHeader="0"/>
- </FileConfiguration>
- </File>
- <File
- RelativePath="..\..\pngerror.c">
- <FileConfiguration
- Name="DLL Release|Win32">
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- Name="VCCLCompilerTool"
- UsePrecompiledHeader="1"/>
- </FileConfiguration>
- <FileConfiguration
- Name="DLL Debug|Win32">
- <Tool
- Name="VCCLCompilerTool"
- UsePrecompiledHeader="1"/>
- </FileConfiguration>
- <FileConfiguration
- Name="DLL VB|Win32">
- <Tool
- Name="VCCLCompilerTool"
- UsePrecompiledHeader="1"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Release|Win32">
- <Tool
- Name="VCCLCompilerTool"
- UsePrecompiledHeader="1"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Debug|Win32">
- <Tool
- Name="VCCLCompilerTool"
- UsePrecompiledHeader="1"/>
- </FileConfiguration>
- </File>
- <File
- RelativePath="..\..\pngget.c">
- </File>
- <File
- RelativePath="..\..\pngmem.c">
- </File>
- <File
- RelativePath="..\..\pngpread.c">
- </File>
- <File
- RelativePath="..\..\pngread.c">
- </File>
- <File
- RelativePath="..\..\pngrio.c">
- </File>
- <File
- RelativePath="..\..\pngrtran.c">
- </File>
- <File
- RelativePath="..\..\pngrutil.c">
- </File>
- <File
- RelativePath="..\..\pngset.c">
- </File>
- <File
- RelativePath="..\..\pngtrans.c">
- </File>
- <File
- RelativePath="..\..\scripts\pngwin.def">
- <FileConfiguration
- Name="DLL VB|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Release|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Debug|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- </File>
- <File
- RelativePath="..\..\pngwio.c">
- </File>
- <File
- RelativePath="..\..\pngwrite.c">
- </File>
- <File
- RelativePath="..\..\pngwtran.c">
- </File>
- <File
- RelativePath="..\..\pngwutil.c">
- </File>
- </Filter>
- <Filter
- Name="Header Files"
- Filter="h;hpp;hxx;hm;inl">
- <File
- RelativePath="..\..\png.h">
- </File>
- <File
- RelativePath="..\..\pngconf.h">
- </File>
- <File
- RelativePath="..\..\pngpriv.h">
- </File>
- </Filter>
- <Filter
- Name="Resource Files"
- Filter="ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe">
- <File
- RelativePath="..\..\scripts\pngwin.rc">
- <FileConfiguration
- Name="LIB Release|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCResourceCompilerTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Debug|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCResourceCompilerTool"/>
- </FileConfiguration>
- </File>
- </Filter>
- <File
- RelativePath=".\PRJ0041.mak">
- <FileConfiguration
- Name="DLL Release|Win32">
- <Tool
- Name="VCCustomBuildTool"
- Description="Create dummy include files to prevent "Cannot find missing dependency..." warnings."
- CommandLine="nmake -f PRJ0041.mak IntDir=$(IntDir)"
- Outputs="$(IntDir)\alloc.h;$(IntDir)\fp.h;$(IntDir)\m68881.h;$(IntDir)\mem.h;$(IntDir)\pngusr.h;$(IntDir)\strings.h;$(IntDir)\unistd.h;$(IntDir)\unixio.h"/>
- </FileConfiguration>
- <FileConfiguration
- Name="DLL Debug|Win32">
- <Tool
- Name="VCCustomBuildTool"
- Description="Create dummy include files to prevent "Cannot find missing dependency..." warnings."
- CommandLine="nmake -f PRJ0041.mak IntDir=$(IntDir)"
- Outputs="$(IntDir)\alloc.h;$(IntDir)\fp.h;$(IntDir)\m68881.h;$(IntDir)\mem.h;$(IntDir)\pngusr.h;$(IntDir)\strings.h;$(IntDir)\unistd.h;$(IntDir)\unixio.h"/>
- </FileConfiguration>
- <FileConfiguration
- Name="DLL VB|Win32">
- <Tool
- Name="VCCustomBuildTool"
- Description="Create dummy include files to prevent "Cannot find missing dependency..." warnings."
- CommandLine="nmake -f PRJ0041.mak IntDir=$(IntDir)"
- Outputs="$(IntDir)\alloc.h;$(IntDir)\fp.h;$(IntDir)\m68881.h;$(IntDir)\mem.h;$(IntDir)\pngusr.h;$(IntDir)\strings.h;$(IntDir)\unistd.h;$(IntDir)\unixio.h"/>
- </FileConfiguration>
- </File>
- <File
- RelativePath="README.txt">
- </File>
- </Files>
- <Globals>
- </Globals>
-</VisualStudioProject>
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="7.10"
+ Name="libpng"
+ RootNamespace="libpng">
+ <Platforms>
+ <Platform
+ Name="Win32"/>
+ </Platforms>
+ <Configurations>
+ <Configuration
+ Name="DLL Release|Win32"
+ OutputDirectory=".\Win32_DLL_Release"
+ IntermediateDirectory=".\Win32_DLL_Release"
+ ConfigurationType="2">
+ <Tool
+ Name="VCCLCompilerTool"
+ InlineFunctionExpansion="1"
+ AdditionalIncludeDirectories="..\..;..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL;_CRT_SECURE_NO_WARNINGS"
+ StringPooling="TRUE"
+ RuntimeLibrary="2"
+ EnableFunctionLevelLinking="TRUE"
+ UsePrecompiledHeader="3"
+ PrecompiledHeaderThrough="pngpriv.h"
+ WarningLevel="3"
+ CompileAs="0"/>
+ <Tool
+ Name="VCCustomBuildTool"/>
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)/libpng15.dll"
+ LinkIncremental="1"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"
+ CommandLine="copy ..\..\scripts\pnglibconf.h.prebuilt ..\..\pnglibconf.h"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"
+ PreprocessorDefinitions="NDEBUG"
+ Culture="1033"
+ AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCWebDeploymentTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="DLL Debug|Win32"
+ OutputDirectory=".\Win32_DLL_Debug"
+ IntermediateDirectory=".\Win32_DLL_Debug"
+ ConfigurationType="2">
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="..\..;..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_BUILD_DLL;ZLIB_DLL;_CRT_SECURE_NO_WARNINGS"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="3"
+ UsePrecompiledHeader="3"
+ PrecompiledHeaderThrough="pngpriv.h"
+ WarningLevel="3"
+ DebugInformationFormat="4"
+ CompileAs="0"/>
+ <Tool
+ Name="VCCustomBuildTool"/>
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)/libpng15d.dll"
+ GenerateDebugInformation="TRUE"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"
+ CommandLine="copy ..\..\scripts\pnglibconf.h.prebuilt ..\..\pnglibconf.h"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"
+ PreprocessorDefinitions="_DEBUG,PNG_DEBUG=1"
+ Culture="1033"
+ AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCWebDeploymentTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="DLL VB|Win32"
+ OutputDirectory=".\Win32_DLL_VB"
+ IntermediateDirectory=".\Win32_DLL_VB"
+ ConfigurationType="2">
+ <Tool
+ Name="VCCLCompilerTool"
+ InlineFunctionExpansion="1"
+ AdditionalIncludeDirectories="..\..;..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL;PNGAPI=__stdcall;PNG_NO_MODULEDEF;PNG_LIBPNG_SPECIALBUILD;PNG_USER_PRIVATEBUILD;_CRT_SECURE_NO_WARNINGS"
+ StringPooling="TRUE"
+ RuntimeLibrary="2"
+ EnableFunctionLevelLinking="TRUE"
+ UsePrecompiledHeader="3"
+ PrecompiledHeaderThrough="pngpriv.h"
+ WarningLevel="3"
+ CompileAs="0"/>
+ <Tool
+ Name="VCCustomBuildTool"/>
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)/libpng15vb.dll"
+ LinkIncremental="1"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"
+ CommandLine="copy ..\..\scripts\pnglibconf.h.prebuilt ..\..\pnglibconf.h"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"
+ AdditionalOptions="/d PNG_NO_PEDANTIC_WARNINGS /d PNG_LIBPNG_DLLFNAME_POSTFIX=""""VB"""" /d PNG_LIBPNG_SPECIALBUILD=""""__stdcall calling convention used for exported functions"""""
+ PreprocessorDefinitions="NDEBUG"
+ Culture="1033"
+ AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCWebDeploymentTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="LIB Release|Win32"
+ OutputDirectory=".\Win32_LIB_Release"
+ IntermediateDirectory=".\Win32_LIB_Release"
+ ConfigurationType="4">
+ <Tool
+ Name="VCCLCompilerTool"
+ InlineFunctionExpansion="1"
+ AdditionalIncludeDirectories="..\..;..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;NDEBUG;_CRT_SECURE_NO_WARNINGS"
+ StringPooling="TRUE"
+ RuntimeLibrary="0"
+ EnableFunctionLevelLinking="TRUE"
+ UsePrecompiledHeader="3"
+ PrecompiledHeaderThrough="pngpriv.h"
+ WarningLevel="3"
+ CompileAs="0"/>
+ <Tool
+ Name="VCCustomBuildTool"/>
+ <Tool
+ Name="VCLibrarianTool"
+ OutputFile="$(OutDir)/libpng.lib"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"
+ CommandLine="copy ..\..\scripts\pnglibconf.h.prebuilt ..\..\pnglibconf.h"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="LIB Debug|Win32"
+ OutputDirectory=".\Win32_LIB_Debug"
+ IntermediateDirectory=".\Win32_LIB_Debug"
+ ConfigurationType="4">
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="..\..;..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;_CRT_SECURE_NO_WARNINGS"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="1"
+ UsePrecompiledHeader="3"
+ PrecompiledHeaderThrough="pngpriv.h"
+ WarningLevel="3"
+ DebugInformationFormat="4"
+ CompileAs="0"/>
+ <Tool
+ Name="VCCustomBuildTool"/>
+ <Tool
+ Name="VCLibrarianTool"
+ OutputFile="$(OutDir)/libpngd.lib"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"
+ CommandLine="copy ..\..\scripts\pnglibconf.h.prebuilt ..\..\pnglibconf.h"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ </Configurations>
+ <References>
+ </References>
+ <Files>
+ <Filter
+ Name="Source Files"
+ Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
+ <File
+ RelativePath="..\..\png.c">
+ <FileConfiguration
+ Name="DLL Release|Win32">
+ <Tool
+ Name="VCCLCompilerTool"
+ UsePrecompiledHeader="0"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="DLL Debug|Win32">
+ <Tool
+ Name="VCCLCompilerTool"
+ UsePrecompiledHeader="0"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="DLL VB|Win32">
+ <Tool
+ Name="VCCLCompilerTool"
+ UsePrecompiledHeader="0"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Release|Win32">
+ <Tool
+ Name="VCCLCompilerTool"
+ UsePrecompiledHeader="0"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Debug|Win32">
+ <Tool
+ Name="VCCLCompilerTool"
+ UsePrecompiledHeader="0"/>
+ </FileConfiguration>
+ </File>
+ <File
+ RelativePath="..\..\pngerror.c">
+ <FileConfiguration
+ Name="DLL Release|Win32">
+ <Tool
+ Name="VCCLCompilerTool"
+ UsePrecompiledHeader="1"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="DLL Debug|Win32">
+ <Tool
+ Name="VCCLCompilerTool"
+ UsePrecompiledHeader="1"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="DLL VB|Win32">
+ <Tool
+ Name="VCCLCompilerTool"
+ UsePrecompiledHeader="1"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Release|Win32">
+ <Tool
+ Name="VCCLCompilerTool"
+ UsePrecompiledHeader="1"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Debug|Win32">
+ <Tool
+ Name="VCCLCompilerTool"
+ UsePrecompiledHeader="1"/>
+ </FileConfiguration>
+ </File>
+ <File
+ RelativePath="..\..\pngget.c">
+ </File>
+ <File
+ RelativePath="..\..\pngmem.c">
+ </File>
+ <File
+ RelativePath="..\..\pngpread.c">
+ </File>
+ <File
+ RelativePath="..\..\pngread.c">
+ </File>
+ <File
+ RelativePath="..\..\pngrio.c">
+ </File>
+ <File
+ RelativePath="..\..\pngrtran.c">
+ </File>
+ <File
+ RelativePath="..\..\pngrutil.c">
+ </File>
+ <File
+ RelativePath="..\..\pngset.c">
+ </File>
+ <File
+ RelativePath="..\..\pngtrans.c">
+ </File>
+ <File
+ RelativePath="..\..\pngwio.c">
+ </File>
+ <File
+ RelativePath="..\..\pngwrite.c">
+ </File>
+ <File
+ RelativePath="..\..\pngwtran.c">
+ </File>
+ <File
+ RelativePath="..\..\pngwutil.c">
+ </File>
+ </Filter>
+ <Filter
+ Name="Header Files"
+ Filter="h;hpp;hxx;hm;inl">
+ <File
+ RelativePath="..\..\png.h">
+ </File>
+ <File
+ RelativePath="..\..\pngconf.h">
+ </File>
+ <File
+ RelativePath="..\..\pngpriv.h">
+ </File>
+ </Filter>
+ <Filter
+ Name="Resource Files"
+ Filter="ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe">
+ <File
+ RelativePath="..\..\scripts\pngwin.rc">
+ <FileConfiguration
+ Name="LIB Release|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Debug|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ </FileConfiguration>
+ </File>
+ </Filter>
+ <File
+ RelativePath=".\PRJ0041.mak">
+ <FileConfiguration
+ Name="DLL Release|Win32">
+ <Tool
+ Name="VCCustomBuildTool"
+ Description="Create dummy include files to prevent "Cannot find missing dependency..." warnings."
+ CommandLine="nmake -f PRJ0041.mak IntDir=$(IntDir)"
+ Outputs="$(IntDir)\alloc.h;$(IntDir)\fp.h;$(IntDir)\m68881.h;$(IntDir)\mem.h;$(IntDir)\pngusr.h;$(IntDir)\strings.h;$(IntDir)\unistd.h;$(IntDir)\unixio.h"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="DLL Debug|Win32">
+ <Tool
+ Name="VCCustomBuildTool"
+ Description="Create dummy include files to prevent "Cannot find missing dependency..." warnings."
+ CommandLine="nmake -f PRJ0041.mak IntDir=$(IntDir)"
+ Outputs="$(IntDir)\alloc.h;$(IntDir)\fp.h;$(IntDir)\m68881.h;$(IntDir)\mem.h;$(IntDir)\pngusr.h;$(IntDir)\strings.h;$(IntDir)\unistd.h;$(IntDir)\unixio.h"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="DLL VB|Win32">
+ <Tool
+ Name="VCCustomBuildTool"
+ Description="Create dummy include files to prevent "Cannot find missing dependency..." warnings."
+ CommandLine="nmake -f PRJ0041.mak IntDir=$(IntDir)"
+ Outputs="$(IntDir)\alloc.h;$(IntDir)\fp.h;$(IntDir)\m68881.h;$(IntDir)\mem.h;$(IntDir)\pngusr.h;$(IntDir)\strings.h;$(IntDir)\unistd.h;$(IntDir)\unixio.h"/>
+ </FileConfiguration>
+ </File>
+ <File
+ RelativePath="README.txt">
+ </File>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
diff --git a/projects/visualc71/pngtest.vcproj b/projects/visualc71/pngtest.vcproj
index 01a3402..ff330ae 100644
--- a/projects/visualc71/pngtest.vcproj
+++ b/projects/visualc71/pngtest.vcproj
@@ -1,267 +1,267 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
- ProjectType="Visual C++"
- Version="7.10"
- Name="pngtest"
- RootNamespace="pngtest">
- <Platforms>
- <Platform
- Name="Win32"/>
- </Platforms>
- <Configurations>
- <Configuration
- Name="DLL Release|Win32"
- OutputDirectory=".\Win32_DLL_Release\Test"
- IntermediateDirectory=".\Win32_DLL_Release\Test"
- ConfigurationType="1">
- <Tool
- Name="VCCLCompilerTool"
- InlineFunctionExpansion="1"
- AdditionalIncludeDirectories="..\..\scripts;..\..\..\zlib"
- PreprocessorDefinitions="WIN32;NDEBUG;PNG_DLL;PNG_NO_STDIO;_CRT_SECURE_NO_WARNINGS"
- StringPooling="TRUE"
- RuntimeLibrary="2"
- EnableFunctionLevelLinking="TRUE"
- WarningLevel="3"
- CompileAs="0"/>
- <Tool
- Name="VCCustomBuildTool"
- Description="Testing..."
- CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
-$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
- Outputs="$(IntDir)\pngout.png"/>
- <Tool
- Name="VCLinkerTool"
- OutputFile="$(OutDir)/pngtest.exe"
- LinkIncremental="1"
- SubSystem="1"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="DLL Debug|Win32"
- OutputDirectory=".\Win32_DLL_Debug\Test"
- IntermediateDirectory=".\Win32_DLL_Debug\Test"
- ConfigurationType="1">
- <Tool
- Name="VCCLCompilerTool"
- Optimization="0"
- AdditionalIncludeDirectories="..\..\scripts;..\..\..\zlib"
- PreprocessorDefinitions="WIN32;_DEBUG;PNG_DLL;PNG_NO_STDIO;_CRT_SECURE_NO_WARNINGS"
- BasicRuntimeChecks="3"
- RuntimeLibrary="3"
- WarningLevel="3"
- DebugInformationFormat="4"
- CompileAs="0"/>
- <Tool
- Name="VCCustomBuildTool"
- Description="Testing..."
- CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
-$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
- Outputs="$(IntDir)\pngout.png"/>
- <Tool
- Name="VCLinkerTool"
- OutputFile="$(OutDir)/pngtest.exe"
- GenerateDebugInformation="TRUE"
- SubSystem="1"
- TargetMachine="1"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="DLL VB|Win32"
- OutputDirectory=".\Win32_DLL_VB\Test"
- IntermediateDirectory=".\Win32_DLL_VB\Test"
- ConfigurationType="1">
- <Tool
- Name="VCCLCompilerTool"
- InlineFunctionExpansion="1"
- AdditionalIncludeDirectories="..\..\scripts;..\..\..\zlib"
- PreprocessorDefinitions="WIN32;NDEBUG;PNG_DLL;PNG_NO_STDIO;PNGAPI=__stdcall;PNG_USER_PRIVATEBUILD;_CRT_SECURE_NO_WARNINGS"
- StringPooling="TRUE"
- RuntimeLibrary="2"
- EnableFunctionLevelLinking="TRUE"
- WarningLevel="2"
- CallingConvention="2"
- CompileAs="0"/>
- <Tool
- Name="VCCustomBuildTool"
- Description="Testing..."
- CommandLine="set path=$(OutDir)\..;$(OutDir)\..\..\Win32_DLL_Release\ZLib
-$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
- Outputs="$(IntDir)\pngout.png"/>
- <Tool
- Name="VCLinkerTool"
- OutputFile="$(OutDir)/pngtest.exe"
- LinkIncremental="1"
- IgnoreDefaultLibraryNames="$(IntDir)\libpng14b.lib"
- SubSystem="1"
- TargetMachine="1"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="LIB Release|Win32"
- OutputDirectory=".\Win32_LIB_Release\Test"
- IntermediateDirectory=".\Win32_LIB_Release\Test"
- ConfigurationType="1">
- <Tool
- Name="VCCLCompilerTool"
- InlineFunctionExpansion="1"
- AdditionalIncludeDirectories="..\..\scripts;..\..\..\zlib"
- PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS"
- StringPooling="TRUE"
- RuntimeLibrary="0"
- EnableFunctionLevelLinking="TRUE"
- WarningLevel="3"
- CompileAs="0"/>
- <Tool
- Name="VCCustomBuildTool"
- Description="Testing..."
- CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
-$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
- Outputs="$(IntDir)\pngout.png"/>
- <Tool
- Name="VCLinkerTool"
- OutputFile="$(OutDir)/pngtest.exe"
- LinkIncremental="1"
- SubSystem="1"
- TargetMachine="1"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="LIB Debug|Win32"
- OutputDirectory=".\Win32_LIB_Debug\Test"
- IntermediateDirectory=".\Win32_LIB_Debug\Test"
- ConfigurationType="1">
- <Tool
- Name="VCCLCompilerTool"
- Optimization="0"
- AdditionalIncludeDirectories="..\..\scripts;..\..\..\zlib"
- PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS"
- BasicRuntimeChecks="3"
- RuntimeLibrary="1"
- WarningLevel="3"
- DebugInformationFormat="4"
- CompileAs="0"/>
- <Tool
- Name="VCCustomBuildTool"
- Description="Testing..."
- CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
-$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
- Outputs="$(IntDir)\pngout.png"/>
- <Tool
- Name="VCLinkerTool"
- OutputFile="$(OutDir)/pngtest.exe"
- GenerateDebugInformation="TRUE"
- SubSystem="1"
- TargetMachine="1"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- </Configurations>
- <References>
- </References>
- <Files>
- <Filter
- Name="Source Files"
- Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
- <File
- RelativePath="..\..\pngtest.c">
- </File>
- </Filter>
- </Files>
- <Globals>
- </Globals>
-</VisualStudioProject>
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="7.10"
+ Name="pngtest"
+ RootNamespace="pngtest">
+ <Platforms>
+ <Platform
+ Name="Win32"/>
+ </Platforms>
+ <Configurations>
+ <Configuration
+ Name="DLL Release|Win32"
+ OutputDirectory=".\Win32_DLL_Release\Test"
+ IntermediateDirectory=".\Win32_DLL_Release\Test"
+ ConfigurationType="1">
+ <Tool
+ Name="VCCLCompilerTool"
+ InlineFunctionExpansion="1"
+ AdditionalIncludeDirectories="..\..\scripts;..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;NDEBUG;PNG_DLL;PNG_NO_STDIO;_CRT_SECURE_NO_WARNINGS"
+ StringPooling="TRUE"
+ RuntimeLibrary="2"
+ EnableFunctionLevelLinking="TRUE"
+ WarningLevel="3"
+ CompileAs="0"/>
+ <Tool
+ Name="VCCustomBuildTool"
+ Description="Testing..."
+ CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
+$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
+ Outputs="$(IntDir)\pngout.png"/>
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)/pngtest.exe"
+ LinkIncremental="1"
+ SubSystem="1"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCWebDeploymentTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="DLL Debug|Win32"
+ OutputDirectory=".\Win32_DLL_Debug\Test"
+ IntermediateDirectory=".\Win32_DLL_Debug\Test"
+ ConfigurationType="1">
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="..\..\scripts;..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;_DEBUG;PNG_DLL;PNG_NO_STDIO;_CRT_SECURE_NO_WARNINGS"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="3"
+ WarningLevel="3"
+ DebugInformationFormat="4"
+ CompileAs="0"/>
+ <Tool
+ Name="VCCustomBuildTool"
+ Description="Testing..."
+ CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
+$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
+ Outputs="$(IntDir)\pngout.png"/>
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)/pngtest.exe"
+ GenerateDebugInformation="TRUE"
+ SubSystem="1"
+ TargetMachine="1"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCWebDeploymentTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="DLL VB|Win32"
+ OutputDirectory=".\Win32_DLL_VB\Test"
+ IntermediateDirectory=".\Win32_DLL_VB\Test"
+ ConfigurationType="1">
+ <Tool
+ Name="VCCLCompilerTool"
+ InlineFunctionExpansion="1"
+ AdditionalIncludeDirectories="..\..\scripts;..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;NDEBUG;PNG_DLL;PNG_NO_STDIO;PNGAPI=__stdcall;PNG_USER_PRIVATEBUILD;_CRT_SECURE_NO_WARNINGS"
+ StringPooling="TRUE"
+ RuntimeLibrary="2"
+ EnableFunctionLevelLinking="TRUE"
+ WarningLevel="2"
+ CallingConvention="2"
+ CompileAs="0"/>
+ <Tool
+ Name="VCCustomBuildTool"
+ Description="Testing..."
+ CommandLine="set path=$(OutDir)\..;$(OutDir)\..\..\Win32_DLL_Release\ZLib
+$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
+ Outputs="$(IntDir)\pngout.png"/>
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)/pngtest.exe"
+ LinkIncremental="1"
+ IgnoreDefaultLibraryNames="$(IntDir)\libpng15b.lib"
+ SubSystem="1"
+ TargetMachine="1"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCWebDeploymentTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="LIB Release|Win32"
+ OutputDirectory=".\Win32_LIB_Release\Test"
+ IntermediateDirectory=".\Win32_LIB_Release\Test"
+ ConfigurationType="1">
+ <Tool
+ Name="VCCLCompilerTool"
+ InlineFunctionExpansion="1"
+ AdditionalIncludeDirectories="..\..\scripts;..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS"
+ StringPooling="TRUE"
+ RuntimeLibrary="0"
+ EnableFunctionLevelLinking="TRUE"
+ WarningLevel="3"
+ CompileAs="0"/>
+ <Tool
+ Name="VCCustomBuildTool"
+ Description="Testing..."
+ CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
+$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
+ Outputs="$(IntDir)\pngout.png"/>
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)/pngtest.exe"
+ LinkIncremental="1"
+ SubSystem="1"
+ TargetMachine="1"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCWebDeploymentTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="LIB Debug|Win32"
+ OutputDirectory=".\Win32_LIB_Debug\Test"
+ IntermediateDirectory=".\Win32_LIB_Debug\Test"
+ ConfigurationType="1">
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="..\..\scripts;..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="1"
+ WarningLevel="3"
+ DebugInformationFormat="4"
+ CompileAs="0"/>
+ <Tool
+ Name="VCCustomBuildTool"
+ Description="Testing..."
+ CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
+$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
+ Outputs="$(IntDir)\pngout.png"/>
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)/pngtest.exe"
+ GenerateDebugInformation="TRUE"
+ SubSystem="1"
+ TargetMachine="1"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCWebDeploymentTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ </Configurations>
+ <References>
+ </References>
+ <Files>
+ <Filter
+ Name="Source Files"
+ Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
+ <File
+ RelativePath="..\..\pngtest.c">
+ </File>
+ </Filter>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
diff --git a/projects/visualc71/zlib.vcproj b/projects/visualc71/zlib.vcproj
index 614b869..eb21848 100644
--- a/projects/visualc71/zlib.vcproj
+++ b/projects/visualc71/zlib.vcproj
@@ -1,391 +1,391 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
- ProjectType="Visual C++"
- Version="7.10"
- Name="zlib">
- <Platforms>
- <Platform
- Name="Win32"/>
- </Platforms>
- <Configurations>
- <Configuration
- Name="DLL Release|Win32"
- OutputDirectory=".\Win32_DLL_Release\ZLib"
- IntermediateDirectory=".\Win32_DLL_Release\ZLib"
- ConfigurationType="2">
- <Tool
- Name="VCCLCompilerTool"
- InlineFunctionExpansion="1"
- AdditionalIncludeDirectories="..\..\..\zlib"
- PreprocessorDefinitions="WIN32;NDEBUG;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS"
- StringPooling="TRUE"
- RuntimeLibrary="2"
- EnableFunctionLevelLinking="TRUE"
- WarningLevel="3"
- CompileAs="1"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLinkerTool"
- OutputFile="$(OutDir)\zlib1.dll"
- LinkIncremental="1"
- ModuleDefinitionFile="..\..\..\zlib\win32\zlib.def"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"
- PreprocessorDefinitions="NDEBUG"
- Culture="1033"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="DLL Debug|Win32"
- OutputDirectory=".\Win32_DLL_Debug\ZLib"
- IntermediateDirectory=".\Win32_DLL_Debug\ZLib"
- ConfigurationType="2">
- <Tool
- Name="VCCLCompilerTool"
- Optimization="0"
- AdditionalIncludeDirectories="..\..\..\zlib"
- PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS"
- BasicRuntimeChecks="3"
- RuntimeLibrary="3"
- WarningLevel="3"
- DebugInformationFormat="4"
- CompileAs="1"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLinkerTool"
- OutputFile="$(OutDir)\zlib1d.dll"
- ModuleDefinitionFile="..\..\..\zlib\win32\zlib.def"
- GenerateDebugInformation="TRUE"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"
- PreprocessorDefinitions="_DEBUG"
- Culture="1033"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="LIB Release|Win32"
- OutputDirectory=".\Win32_LIB_Release\ZLib"
- IntermediateDirectory=".\Win32_LIB_Release\ZLib"
- ConfigurationType="4">
- <Tool
- Name="VCCLCompilerTool"
- InlineFunctionExpansion="1"
- AdditionalIncludeDirectories="..\..\..\zlib"
- PreprocessorDefinitions="WIN32;NDEBUG;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS"
- StringPooling="TRUE"
- RuntimeLibrary="0"
- EnableFunctionLevelLinking="TRUE"
- WarningLevel="3"
- CompileAs="1"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLibrarianTool"
- OutputFile="$(OutDir)\zlib.lib"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="LIB Debug|Win32"
- OutputDirectory=".\Win32_LIB_Debug\ZLib"
- IntermediateDirectory=".\Win32_LIB_Debug\ZLib"
- ConfigurationType="4">
- <Tool
- Name="VCCLCompilerTool"
- Optimization="0"
- AdditionalIncludeDirectories="..\..\..\zlib"
- PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS"
- BasicRuntimeChecks="3"
- RuntimeLibrary="1"
- WarningLevel="3"
- DebugInformationFormat="4"
- CompileAs="1"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLibrarianTool"
- OutputFile="$(OutDir)\zlibd.lib"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- </Configurations>
- <References>
- </References>
- <Files>
- <Filter
- Name="Source Files"
- Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
- <File
- RelativePath="..\..\..\zlib\adler32.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\compress.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\crc32.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\deflate.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\gzlib.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\gzclose.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\gzread.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\gzwrite.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\infback.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\inffast.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\inflate.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\inftrees.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\trees.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\uncompr.c">
- </File>
- <File
- RelativePath="..\..\..\zlib\win32\zlib.def">
- <FileConfiguration
- Name="LIB Release|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Debug|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- </File>
- <File
- RelativePath="..\..\..\zlib\zutil.c">
- </File>
- </Filter>
- <Filter
- Name="Header Files"
- Filter="h;hpp;hxx;hm;inl">
- <File
- RelativePath="..\..\..\zlib\crc32.h">
- </File>
- <File
- RelativePath="..\..\..\zlib\deflate.h">
- </File>
- <File
- RelativePath="..\..\..\zlib\inffast.h">
- </File>
- <File
- RelativePath="..\..\..\zlib\inffixed.h">
- </File>
- <File
- RelativePath="..\..\..\zlib\inflate.h">
- </File>
- <File
- RelativePath="..\..\..\zlib\inftrees.h">
- </File>
- <File
- RelativePath="..\..\..\zlib\trees.h">
- </File>
- <File
- RelativePath="..\..\..\zlib\zconf.h">
- </File>
- <File
- RelativePath="..\..\..\zlib\zlib.h">
- </File>
- <File
- RelativePath="..\..\..\zlib\zutil.h">
- </File>
- </Filter>
- <Filter
- Name="Resource Files"
- Filter="ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe">
- <File
- RelativePath="..\..\..\zlib\win32\zlib1.rc">
- <FileConfiguration
- Name="LIB Release|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCResourceCompilerTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Debug|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCResourceCompilerTool"/>
- </FileConfiguration>
- </File>
- </Filter>
- <Filter
- Name="Assembler Files (Unsupported)"
- Filter="asm;obj;c;cpp;cxx;h;hpp;hxx">
- <File
- RelativePath="..\..\..\zlib\contrib\masmx86\gvmat32.asm">
- <FileConfiguration
- Name="DLL Release|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="DLL Debug|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Release|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Debug|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- </File>
- <File
- RelativePath="..\..\..\zlib\contrib\masmx86\gvmat32c.c">
- <FileConfiguration
- Name="DLL Release|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCLCompilerTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="DLL Debug|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCLCompilerTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Release|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCLCompilerTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Debug|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCLCompilerTool"/>
- </FileConfiguration>
- </File>
- <File
- RelativePath="..\..\..\zlib\contrib\masmx86\inffas32.asm">
- <FileConfiguration
- Name="DLL Release|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="DLL Debug|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Release|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- <FileConfiguration
- Name="LIB Debug|Win32"
- ExcludedFromBuild="TRUE">
- <Tool
- Name="VCCustomBuildTool"/>
- </FileConfiguration>
- </File>
- </Filter>
- <File
- RelativePath="README.txt">
- </File>
- </Files>
- <Globals>
- </Globals>
-</VisualStudioProject>
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="7.10"
+ Name="zlib">
+ <Platforms>
+ <Platform
+ Name="Win32"/>
+ </Platforms>
+ <Configurations>
+ <Configuration
+ Name="DLL Release|Win32"
+ OutputDirectory=".\Win32_DLL_Release\ZLib"
+ IntermediateDirectory=".\Win32_DLL_Release\ZLib"
+ ConfigurationType="2">
+ <Tool
+ Name="VCCLCompilerTool"
+ InlineFunctionExpansion="1"
+ AdditionalIncludeDirectories="..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;NDEBUG;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS"
+ StringPooling="TRUE"
+ RuntimeLibrary="2"
+ EnableFunctionLevelLinking="TRUE"
+ WarningLevel="3"
+ CompileAs="1"/>
+ <Tool
+ Name="VCCustomBuildTool"/>
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)\zlib1.dll"
+ LinkIncremental="1"
+ ModuleDefinitionFile="..\..\..\zlib\win32\zlib.def"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"
+ PreprocessorDefinitions="NDEBUG"
+ Culture="1033"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCWebDeploymentTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="DLL Debug|Win32"
+ OutputDirectory=".\Win32_DLL_Debug\ZLib"
+ IntermediateDirectory=".\Win32_DLL_Debug\ZLib"
+ ConfigurationType="2">
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="3"
+ WarningLevel="3"
+ DebugInformationFormat="4"
+ CompileAs="1"/>
+ <Tool
+ Name="VCCustomBuildTool"/>
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)\zlib1d.dll"
+ ModuleDefinitionFile="..\..\..\zlib\win32\zlib.def"
+ GenerateDebugInformation="TRUE"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"
+ PreprocessorDefinitions="_DEBUG"
+ Culture="1033"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCWebDeploymentTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="LIB Release|Win32"
+ OutputDirectory=".\Win32_LIB_Release\ZLib"
+ IntermediateDirectory=".\Win32_LIB_Release\ZLib"
+ ConfigurationType="4">
+ <Tool
+ Name="VCCLCompilerTool"
+ InlineFunctionExpansion="1"
+ AdditionalIncludeDirectories="..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;NDEBUG;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS"
+ StringPooling="TRUE"
+ RuntimeLibrary="0"
+ EnableFunctionLevelLinking="TRUE"
+ WarningLevel="3"
+ CompileAs="1"/>
+ <Tool
+ Name="VCCustomBuildTool"/>
+ <Tool
+ Name="VCLibrarianTool"
+ OutputFile="$(OutDir)\zlib.lib"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ <Configuration
+ Name="LIB Debug|Win32"
+ OutputDirectory=".\Win32_LIB_Debug\ZLib"
+ IntermediateDirectory=".\Win32_LIB_Debug\ZLib"
+ ConfigurationType="4">
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="..\..\..\zlib"
+ PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="1"
+ WarningLevel="3"
+ DebugInformationFormat="4"
+ CompileAs="1"/>
+ <Tool
+ Name="VCCustomBuildTool"/>
+ <Tool
+ Name="VCLibrarianTool"
+ OutputFile="$(OutDir)\zlibd.lib"/>
+ <Tool
+ Name="VCMIDLTool"/>
+ <Tool
+ Name="VCPostBuildEventTool"/>
+ <Tool
+ Name="VCPreBuildEventTool"/>
+ <Tool
+ Name="VCPreLinkEventTool"/>
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"/>
+ <Tool
+ Name="VCXMLDataGeneratorTool"/>
+ <Tool
+ Name="VCManagedWrapperGeneratorTool"/>
+ <Tool
+ Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+ </Configuration>
+ </Configurations>
+ <References>
+ </References>
+ <Files>
+ <Filter
+ Name="Source Files"
+ Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
+ <File
+ RelativePath="..\..\..\zlib\adler32.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\compress.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\crc32.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\deflate.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\gzlib.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\gzclose.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\gzread.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\gzwrite.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\infback.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\inffast.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\inflate.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\inftrees.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\trees.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\uncompr.c">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\win32\zlib.def">
+ <FileConfiguration
+ Name="LIB Release|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCustomBuildTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Debug|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCustomBuildTool"/>
+ </FileConfiguration>
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\zutil.c">
+ </File>
+ </Filter>
+ <Filter
+ Name="Header Files"
+ Filter="h;hpp;hxx;hm;inl">
+ <File
+ RelativePath="..\..\..\zlib\crc32.h">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\deflate.h">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\inffast.h">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\inffixed.h">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\inflate.h">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\inftrees.h">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\trees.h">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\zconf.h">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\zlib.h">
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\zutil.h">
+ </File>
+ </Filter>
+ <Filter
+ Name="Resource Files"
+ Filter="ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe">
+ <File
+ RelativePath="..\..\..\zlib\win32\zlib1.rc">
+ <FileConfiguration
+ Name="LIB Release|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Debug|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCResourceCompilerTool"/>
+ </FileConfiguration>
+ </File>
+ </Filter>
+ <Filter
+ Name="Assembler Files (Unsupported)"
+ Filter="asm;obj;c;cpp;cxx;h;hpp;hxx">
+ <File
+ RelativePath="..\..\..\zlib\contrib\masmx86\gvmat32.asm">
+ <FileConfiguration
+ Name="DLL Release|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCustomBuildTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="DLL Debug|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCustomBuildTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Release|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCustomBuildTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Debug|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCustomBuildTool"/>
+ </FileConfiguration>
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\contrib\masmx86\gvmat32c.c">
+ <FileConfiguration
+ Name="DLL Release|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCLCompilerTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="DLL Debug|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCLCompilerTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Release|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCLCompilerTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Debug|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCLCompilerTool"/>
+ </FileConfiguration>
+ </File>
+ <File
+ RelativePath="..\..\..\zlib\contrib\masmx86\inffas32.asm">
+ <FileConfiguration
+ Name="DLL Release|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCustomBuildTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="DLL Debug|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCustomBuildTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Release|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCustomBuildTool"/>
+ </FileConfiguration>
+ <FileConfiguration
+ Name="LIB Debug|Win32"
+ ExcludedFromBuild="TRUE">
+ <Tool
+ Name="VCCustomBuildTool"/>
+ </FileConfiguration>
+ </File>
+ </Filter>
+ <File
+ RelativePath="README.txt">
+ </File>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
diff --git a/projects/vstudio/libpng/libpng.vcxproj b/projects/vstudio/libpng/libpng.vcxproj
index 23d4eb5..c4bf041 100644
--- a/projects/vstudio/libpng/libpng.vcxproj
+++ b/projects/vstudio/libpng/libpng.vcxproj
@@ -63,76 +63,74 @@
<LinkIncremental>false</LinkIncremental>
<CustomBuildBeforeTargets>
</CustomBuildBeforeTargets>
- <TargetName>$(ProjectName)14</TargetName>
+ <TargetName>$(ProjectName)15</TargetName>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
<LinkIncremental>false</LinkIncremental>
<CustomBuildBeforeTargets />
- <TargetName>$(ProjectName)14</TargetName>
+ <TargetName>$(ProjectName)15</TargetName>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<LinkIncremental>false</LinkIncremental>
<CustomBuildBeforeTargets>
</CustomBuildBeforeTargets>
- <TargetName>$(ProjectName)14</TargetName>
+ <TargetName>$(ProjectName)15</TargetName>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
<LinkIncremental>false</LinkIncremental>
<CustomBuildBeforeTargets />
- <TargetName>$(ProjectName)14</TargetName>
+ <TargetName>$(ProjectName)15</TargetName>
</PropertyGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
- <PrecompiledHeader>NotUsing</PrecompiledHeader>
+ <PrecompiledHeader>Use</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
- <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
- <PreprocessorDefinitions>WIN32;PNG_BUILD_DLL;PNG_NO_MODULEDEF;_DEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<IntrinsicFunctions>true</IntrinsicFunctions>
<FunctionLevelLinking>true</FunctionLevelLinking>
<FloatingPointExceptions>false</FloatingPointExceptions>
<TreatWChar_tAsBuiltInType>false</TreatWChar_tAsBuiltInType>
- <PrecompiledHeaderFile>png.h</PrecompiledHeaderFile>
+ <PrecompiledHeaderFile>pngpriv.h</PrecompiledHeaderFile>
<BrowseInformation>true</BrowseInformation>
<CompileAs>CompileAsC</CompileAs>
<StringPooling>true</StringPooling>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
- <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <AdditionalIncludeDirectories>$(ZLibSrcDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<TreatWarningAsError>true</TreatWarningAsError>
<Optimization>Disabled</Optimization>
</ClCompile>
<Link>
<SubSystem>Windows</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
- <AdditionalDependencies>zlib.lib;msvcrtd.lib;kernel32.lib</AdditionalDependencies>
- <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
- <Version>14</Version>
+ <AdditionalDependencies>zlib.lib</AdditionalDependencies>
+ <Version>15</Version>
<AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
</Link>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
<ClCompile>
- <PrecompiledHeader>NotUsing</PrecompiledHeader>
+ <PrecompiledHeader>Use</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
- <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
- <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<IntrinsicFunctions>true</IntrinsicFunctions>
<FunctionLevelLinking>true</FunctionLevelLinking>
<FloatingPointExceptions>false</FloatingPointExceptions>
<TreatWChar_tAsBuiltInType>false</TreatWChar_tAsBuiltInType>
- <PrecompiledHeaderFile>png.h</PrecompiledHeaderFile>
+ <PrecompiledHeaderFile>pngpriv.h</PrecompiledHeaderFile>
<BrowseInformation>true</BrowseInformation>
<CompileAs>CompileAsC</CompileAs>
<StringPooling>true</StringPooling>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
- <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <AdditionalIncludeDirectories>$(ZLibSrcDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<TreatWarningAsError>true</TreatWarningAsError>
+ <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
</ClCompile>
<Link>
<SubSystem>Windows</SubSystem>
@@ -142,53 +140,20 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
- <PrecompiledHeader>NotUsing</PrecompiledHeader>
+ <PrecompiledHeader>Use</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
- <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
- <FunctionLevelLinking>true</FunctionLevelLinking>
- <IntrinsicFunctions>true</IntrinsicFunctions>
- <PreprocessorDefinitions>WIN32;PNG_BUILD_DLL;PNG_NO_MODULEDEF;NDEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
- <FloatingPointExceptions>false</FloatingPointExceptions>
- <TreatWChar_tAsBuiltInType>false</TreatWChar_tAsBuiltInType>
- <PrecompiledHeaderFile>png.h</PrecompiledHeaderFile>
- <BrowseInformation>true</BrowseInformation>
- <CompileAs>CompileAsC</CompileAs>
- <StringPooling>true</StringPooling>
- <MinimalRebuild>false</MinimalRebuild>
- <DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
- <AdditionalIncludeDirectories>$(ZLib1Dir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
- <TreatWarningAsError>true</TreatWarningAsError>
- <Optimization>Full</Optimization>
- </ClCompile>
- <Link>
- <SubSystem>Windows</SubSystem>
- <GenerateDebugInformation>true</GenerateDebugInformation>
- <EnableCOMDATFolding>true</EnableCOMDATFolding>
- <OptimizeReferences>true</OptimizeReferences>
- <AdditionalDependencies>zdll.lib;msvcrt.lib;kernel32.lib</AdditionalDependencies>
- <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
- <Version>14</Version>
- <AdditionalLibraryDirectories>$(ZLib1Dir)</AdditionalLibraryDirectories>
- </Link>
- </ItemDefinitionGroup>
- <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
- <ClCompile>
- <WarningLevel>Level4</WarningLevel>
- <PrecompiledHeader>NotUsing</PrecompiledHeader>
- <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
- <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<FloatingPointExceptions>false</FloatingPointExceptions>
<TreatWChar_tAsBuiltInType>false</TreatWChar_tAsBuiltInType>
- <PrecompiledHeaderFile>png.h</PrecompiledHeaderFile>
+ <PrecompiledHeaderFile>pngpriv.h</PrecompiledHeaderFile>
<BrowseInformation>true</BrowseInformation>
<CompileAs>CompileAsC</CompileAs>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
- <AdditionalIncludeDirectories>$(ZLib1Dir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <AdditionalIncludeDirectories>$(ZLibSrcDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<TreatWarningAsError>true</TreatWarningAsError>
<Optimization>Full</Optimization>
</ClCompile>
@@ -197,8 +162,43 @@
<GenerateDebugInformation>true</GenerateDebugInformation>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
+ <AdditionalDependencies>zlib.lib</AdditionalDependencies>
+ <Version>15</Version>
+ <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
</Link>
</ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
+ <ClCompile>
+ <WarningLevel>Level4</WarningLevel>
+ <PrecompiledHeader>Use</PrecompiledHeader>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+ <FunctionLevelLinking>true</FunctionLevelLinking>
+ <IntrinsicFunctions>true</IntrinsicFunctions>
+ <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <FloatingPointExceptions>false</FloatingPointExceptions>
+ <TreatWChar_tAsBuiltInType>false</TreatWChar_tAsBuiltInType>
+ <PrecompiledHeaderFile>pngpriv.h</PrecompiledHeaderFile>
+ <BrowseInformation>true</BrowseInformation>
+ <CompileAs>CompileAsC</CompileAs>
+ <StringPooling>true</StringPooling>
+ <MinimalRebuild>false</MinimalRebuild>
+ <DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
+ <AdditionalIncludeDirectories>$(ZLibSrcDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <TreatWarningAsError>true</TreatWarningAsError>
+ <Optimization>Full</Optimization>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ </ClCompile>
+ <Link>
+ <SubSystem>Windows</SubSystem>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <EnableCOMDATFolding>true</EnableCOMDATFolding>
+ <OptimizeReferences>true</OptimizeReferences>
+ </Link>
+ <Lib>
+ <LinkTimeCodeGeneration>true</LinkTimeCodeGeneration>
+ </Lib>
+ </ItemDefinitionGroup>
<ItemGroup>
<ClCompile Include="..\..\..\png.c">
<PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
diff --git a/projects/vstudio/pnglibconf/pnglibconf.vcxproj b/projects/vstudio/pnglibconf/pnglibconf.vcxproj
new file mode 100644
index 0000000..7c691c3
--- /dev/null
+++ b/projects/vstudio/pnglibconf/pnglibconf.vcxproj
@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup Label="ProjectConfigurations">
+ <ProjectConfiguration Include="Release|Win32">
+ <Configuration>Release</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ </ItemGroup>
+ <PropertyGroup Label="Globals">
+ <ProjectGuid>{EB33566E-DA7F-4D28-9077-88C0B7C77E35}</ProjectGuid>
+ <RootNamespace>pnglibconf</RootNamespace>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <UseDebugLibraries>false</UseDebugLibraries>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ <CharacterSet>MultiByte</CharacterSet>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+ <ImportGroup Label="ExtensionSettings">
+ </ImportGroup>
+ <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <PropertyGroup Label="UserMacros" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <CustomBuildBeforeTargets>Build</CustomBuildBeforeTargets>
+ </PropertyGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <ClCompile>
+ <WarningLevel>Level3</WarningLevel>
+ <Optimization>MaxSpeed</Optimization>
+ <FunctionLevelLinking>true</FunctionLevelLinking>
+ <IntrinsicFunctions>true</IntrinsicFunctions>
+ </ClCompile>
+ <Link>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <EnableCOMDATFolding>true</EnableCOMDATFolding>
+ <OptimizeReferences>true</OptimizeReferences>
+ </Link>
+ <CustomBuildStep>
+ <Command>copy ..\..\..\scripts\pnglibconf.h.prebuilt ..\..\..\pnglibconf.h</Command>
+ </CustomBuildStep>
+ <CustomBuildStep>
+ <Message>Generating pnglibconf.h</Message>
+ </CustomBuildStep>
+ <CustomBuildStep>
+ <Outputs>..\..\..\pnglibconf.h</Outputs>
+ </CustomBuildStep>
+ <CustomBuildStep>
+ <Inputs>..\..\..\scripts\pnglibconf.h.prebuilt</Inputs>
+ </CustomBuildStep>
+ </ItemDefinitionGroup>
+ <ItemGroup>
+ </ItemGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+ <ImportGroup Label="ExtensionTargets">
+ </ImportGroup>
+</Project>
diff --git a/projects/vstudio/pngtest/pngtest.vcxproj b/projects/vstudio/pngtest/pngtest.vcxproj
index bdc4690..a03dca5 100644
--- a/projects/vstudio/pngtest/pngtest.vcxproj
+++ b/projects/vstudio/pngtest/pngtest.vcxproj
@@ -81,7 +81,6 @@
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
- <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996</DisableSpecificWarnings>
@@ -91,12 +90,12 @@
<StringPooling>true</StringPooling>
<FunctionLevelLinking>false</FunctionLevelLinking>
<BrowseInformation>true</BrowseInformation>
+ <FloatingPointExceptions>false</FloatingPointExceptions>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
- <AdditionalDependencies>libpng14.lib;zlib.lib;msvcrtd.lib;kernel32.lib</AdditionalDependencies>
- <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
+ <AdditionalDependencies>libpng15.lib</AdditionalDependencies>
<AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
</Link>
<CustomBuildStep>
@@ -114,7 +113,7 @@
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
- <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+ <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996</DisableSpecificWarnings>
@@ -124,12 +123,12 @@
<StringPooling>true</StringPooling>
<FunctionLevelLinking>false</FunctionLevelLinking>
<BrowseInformation>true</BrowseInformation>
+ <FloatingPointExceptions>false</FloatingPointExceptions>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
- <AdditionalDependencies>libpng14.lib;zlib.lib;msvcrtd.lib;kernel32.lib</AdditionalDependencies>
- <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
+ <AdditionalDependencies>libpng15.lib;zlib.lib</AdditionalDependencies>
<AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
</Link>
<CustomBuildStep>
@@ -145,25 +144,26 @@
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
- <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
<FunctionLevelLinking>false</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
- <AdditionalIncludeDirectories>$(ZLib1Dir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<BrowseInformation>true</BrowseInformation>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ <FloatingPointExceptions>false</FloatingPointExceptions>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
- <AdditionalDependencies>libpng14.lib;msvcrt.lib;kernel32.lib</AdditionalDependencies>
- <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
+ <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
+ <AdditionalDependencies>libpng15.lib</AdditionalDependencies>
<AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
</Link>
<CustomBuildStep>
@@ -179,26 +179,28 @@
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
- <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+ <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
<FunctionLevelLinking>false</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
- <AdditionalIncludeDirectories>$(ZLib1Dir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<BrowseInformation>true</BrowseInformation>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ <FloatingPointExceptions>false</FloatingPointExceptions>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
- <AdditionalDependencies>libpng14.lib;zlib.lib;msvcrt.lib;kernel32.lib</AdditionalDependencies>
- <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
- <AdditionalLibraryDirectories>$(OutDir);$(ZLib1Dir)</AdditionalLibraryDirectories>
+ <AdditionalDependencies>libpng15.lib;zlib.lib</AdditionalDependencies>
+ <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
+ <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
</Link>
<CustomBuildStep>
<Message>Executing PNG test program</Message>
diff --git a/projects/vstudio/pngvalid/pngvalid.vcxproj b/projects/vstudio/pngvalid/pngvalid.vcxproj
new file mode 100644
index 0000000..6a0a6e4
--- /dev/null
+++ b/projects/vstudio/pngvalid/pngvalid.vcxproj
@@ -0,0 +1,218 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup Label="ProjectConfigurations">
+ <ProjectConfiguration Include="Debug Library|Win32">
+ <Configuration>Debug Library</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Debug|Win32">
+ <Configuration>Debug</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release Library|Win32">
+ <Configuration>Release Library</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|Win32">
+ <Configuration>Release</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ </ItemGroup>
+ <PropertyGroup Label="Globals">
+ <ProjectGuid>{9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}</ProjectGuid>
+ <Keyword>Win32Proj</Keyword>
+ <RootNamespace>pngvalid</RootNamespace>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+ <Import Project="$(SolutionDir)\zlib.props" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+ <ImportGroup Label="ExtensionSettings">
+ </ImportGroup>
+ <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
+ </ImportGroup>
+ <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
+ </ImportGroup>
+ <PropertyGroup Label="UserMacros" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <LinkIncremental>false</LinkIncremental>
+ <CustomBuildAfterTargets />
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
+ <LinkIncremental>false</LinkIncremental>
+ <CustomBuildAfterTargets />
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <LinkIncremental>false</LinkIncremental>
+ <CustomBuildAfterTargets />
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
+ <LinkIncremental>false</LinkIncremental>
+ <CustomBuildAfterTargets />
+ </PropertyGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <ClCompile>
+ <PrecompiledHeader>NotUsing</PrecompiledHeader>
+ <WarningLevel>Level4</WarningLevel>
+ <MinimalRebuild>false</MinimalRebuild>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ <Optimization>Disabled</Optimization>
+ <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+ <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;PNG_USE_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
+ <CompileAsManaged>false</CompileAsManaged>
+ <TreatWarningAsError>true</TreatWarningAsError>
+ <IntrinsicFunctions>true</IntrinsicFunctions>
+ <StringPooling>true</StringPooling>
+ <FunctionLevelLinking>false</FunctionLevelLinking>
+ <BrowseInformation>true</BrowseInformation>
+ <FloatingPointExceptions>false</FloatingPointExceptions>
+ </ClCompile>
+ <Link>
+ <SubSystem>Console</SubSystem>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <AdditionalDependencies>libpng15.lib;zlib.lib</AdditionalDependencies>
+ <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
+ </Link>
+ <CustomBuildStep>
+ <Message>Executing PNG validation program</Message>
+ <Command>"$(OutDir)pngvalid.exe" --touch "$(IntDir)pngvalid.out"</Command>
+ <Outputs>$(IntDir)pngvalid.out</Outputs>
+ <Inputs>$(OutDir)pngvalid.exe</Inputs>
+ </CustomBuildStep>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
+ <ClCompile>
+ <PrecompiledHeader>NotUsing</PrecompiledHeader>
+ <WarningLevel>Level4</WarningLevel>
+ <MinimalRebuild>false</MinimalRebuild>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ <Optimization>Disabled</Optimization>
+ <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+ <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+ <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
+ <CompileAsManaged>false</CompileAsManaged>
+ <TreatWarningAsError>true</TreatWarningAsError>
+ <IntrinsicFunctions>true</IntrinsicFunctions>
+ <StringPooling>true</StringPooling>
+ <FunctionLevelLinking>false</FunctionLevelLinking>
+ <BrowseInformation>true</BrowseInformation>
+ <FloatingPointExceptions>false</FloatingPointExceptions>
+ </ClCompile>
+ <Link>
+ <SubSystem>Console</SubSystem>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <AdditionalDependencies>libpng15.lib;zlib.lib</AdditionalDependencies>
+ <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
+ </Link>
+ <CustomBuildStep>
+ <Message>Executing PNG validation program</Message>
+ <Command>"$(OutDir)pngvalid.exe" --touch "$(IntDir)pngvalid.out"</Command>
+ <Outputs>$(IntDir)pngvalid.out</Outputs>
+ <Inputs>$(OutDir)pngvalid.exe</Inputs>
+ </CustomBuildStep>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <ClCompile>
+ <WarningLevel>Level4</WarningLevel>
+ <PrecompiledHeader>NotUsing</PrecompiledHeader>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ <Optimization>Full</Optimization>
+ <FunctionLevelLinking>false</FunctionLevelLinking>
+ <IntrinsicFunctions>true</IntrinsicFunctions>
+ <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;PNG_USE_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
+ <CompileAsManaged>false</CompileAsManaged>
+ <TreatWarningAsError>true</TreatWarningAsError>
+ <StringPooling>true</StringPooling>
+ <MinimalRebuild>false</MinimalRebuild>
+ <BrowseInformation>true</BrowseInformation>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ <FloatingPointExceptions>false</FloatingPointExceptions>
+ </ClCompile>
+ <Link>
+ <SubSystem>Console</SubSystem>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <EnableCOMDATFolding>true</EnableCOMDATFolding>
+ <OptimizeReferences>true</OptimizeReferences>
+ <AdditionalDependencies>libpng15.lib;zlib.lib</AdditionalDependencies>
+ <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
+ <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
+ </Link>
+ <CustomBuildStep>
+ <Message>Executing PNG validation program</Message>
+ <Command>"$(OutDir)pngvalid.exe" --touch "$(IntDir)pngvalid.out"</Command>
+ <Outputs>$(IntDir)pngvalid.out</Outputs>
+ <Inputs>$(OutDir)pngvalid.exe</Inputs>
+ </CustomBuildStep>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
+ <ClCompile>
+ <WarningLevel>Level4</WarningLevel>
+ <PrecompiledHeader>NotUsing</PrecompiledHeader>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ <Optimization>Full</Optimization>
+ <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+ <FunctionLevelLinking>false</FunctionLevelLinking>
+ <IntrinsicFunctions>true</IntrinsicFunctions>
+ <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
+ <CompileAsManaged>false</CompileAsManaged>
+ <TreatWarningAsError>true</TreatWarningAsError>
+ <StringPooling>true</StringPooling>
+ <MinimalRebuild>false</MinimalRebuild>
+ <BrowseInformation>true</BrowseInformation>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ <FloatingPointExceptions>false</FloatingPointExceptions>
+ </ClCompile>
+ <Link>
+ <SubSystem>Console</SubSystem>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <EnableCOMDATFolding>true</EnableCOMDATFolding>
+ <OptimizeReferences>true</OptimizeReferences>
+ <AdditionalDependencies>libpng15.lib;zlib.lib</AdditionalDependencies>
+ <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
+ <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
+ </Link>
+ <CustomBuildStep>
+ <Message>Executing PNG validation program</Message>
+ <Command>"$(OutDir)pngvalid.exe" --touch "$(IntDir)pngvalid.out"</Command>
+ <Outputs>$(IntDir)pngvalid.out</Outputs>
+ <Inputs>$(OutDir)pngvalid.exe</Inputs>
+ </CustomBuildStep>
+ </ItemDefinitionGroup>
+ <ItemGroup>
+ <ClCompile Include="..\..\..\contrib\libtests\pngvalid.c" />
+ </ItemGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+ <ImportGroup Label="ExtensionTargets">
+ </ImportGroup>
+</Project>
diff --git a/projects/vstudio/readme.txt b/projects/vstudio/readme.txt
index 66c4e67..1d8b99e 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
VisualStudio instructions
-libpng version 1.4.9beta01 - July 8, 2011
+libpng version 1.5.10beta01 - February 19, 2012
Copyright (c) 1998-2010 Glenn Randers-Pehrson
@@ -13,29 +13,13 @@
VisualStudio 2010. It may also work under later versions of VisualStudio.
You should be familiar with VisualStudio before using this directory.
-This is a slightly modified copy of the 'vstudio' solution from libpng
-1.5; it is intended to provide compatibility for libpng 1.4 with later
-releases of zlib (from 1.2.4) and to provide a migration aid for 1.5.
-
-A 'VB' DLL is no longer produced - use the standard 'Release' DLL.
-
Initial preparations
====================
-You should install the 'official' build of zlib on your system - follow the
-instructions provided on http://www.zlib.net. When a new release is being
-made of zlib the instructions disappear for a while until the new official
-build is available. You will have to wait.
-
You must enter some information in zlib.props before attempting to build
with this 'solution'. Please read and edit zlib.props first. You will
probably not be familiar with the contents of zlib.props - do not worry,
it is mostly harmless.
-Make sure that your official build layout matches the requirements listed
-in zlib.props. Prior to zlib-1.2.4 the official build (1.2.3) placed
-include and library files in different directories - if you find this
-has happened just put them all in the same directory.
-
This is all you need to do to build the 'release' and 'release library'
configurations.
@@ -46,6 +30,25 @@
optimization may make it difficult to debug. Simply rebuild with a lower
optimization level (e.g. /Od.)
+Linking your application
+========================
+Normally you should link against the 'release' configuration. This builds a
+DLL for libpng 1.5 with the default runtime options used by Visual Studio
+2010. In particular the runtime library is the "MultiThreaded DLL" version.
+If you use Visual Studio defaults to build your application you will have no
+problems.
+
+If you don't use the Visual Studio defaults your application must still be built
+with the default runtime option (/MD). If, for some reason, it is not then your
+application will crash inside libpng15.dll as soon as libpng tries to read
+from a file handle you pass in.
+
+If you do not want to use the DLL, for example for a very small application,
+the 'release library' configuration may be more appropriate. This is built
+with a non-standard runtime library - the "MultiThreaded" version. When you
+build your application it must be compiled with this option (/MT), otherwise
+it will not build (if you are lucky) or crash (if you are not.)
+
Stop reading here
=================
You have enough information to build a working application.
@@ -57,37 +60,5 @@
far more effective to debug on the release builds, there is no point building
a special debug build.)
-If, despite the previous paragraph, you still feel you need a debug build you
-will have to download the zlib source as well (http://www.zlib.net) and include
-the directory where you unpack it in zlib.props. This solution will then be
-able to build a minimal zlib sufficient for libpng. This build is only
-suitable for making a debug libpng.
-
The debug build of libpng is minimally supported. Support for debug builds of
zlib is also minimal. You really don't want to do this.
-
-This solution only supports the Multi-Threaded DLL C Runtime
-============================================================
-If you examine the solution you will find that it very deliberately lists
-exactly which MicroSoft DLLs it is linking against. It explicitly links
-against msvcrt.lib. The debug version links against msvcrtd.lib (this is
-why it is a debug version - it's nothing to do with having any special
-debug support, it doesn't).
-
-These versions of the MicroSoft C runtime correspond to the compiler flags
-/MD (release) and /MDd (debug) - the "Multi-Threaded DLL" implementation of the
-C runtime library.
-
-If you need to change this then you will have to make sure that both the
-compiler flags and the ".lib" in the linker dependences match up. Fortunately
-neither zlib nor libpng require libraries other than a C runtime and
-kernel32.
-
-You cannot pass (FILE*) objects from a different runtime (including msvcrtd
-to msvcrt) to libpng. If you do then your program will crash within libpng
-when it first makes a file read or write call.
-
-It is likely if you have read this far that you have found you can't avoid
-having multiple C runtimes in your program. This is OK, it does work, but
-you will have to implement the libpng file read/write callbacks rather than
-using the internal libpng default. This is easy.
diff --git a/projects/vstudio/vstudio.sln b/projects/vstudio/vstudio.sln
index 0c8b7bc..4ab6641 100644
--- a/projects/vstudio/vstudio.sln
+++ b/projects/vstudio/vstudio.sln
@@ -1,16 +1,28 @@
Microsoft Visual Studio Solution File, Format Version 11.00
-# Visual C++ Express 2010
+# Visual Studio 2010
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libpng", "libpng\libpng.vcxproj", "{D6973076-9317-4EF2-A0B8-B7A18AC0713E}"
ProjectSection(ProjectDependencies) = postProject
- {18040998-CC22-2BAE-FE7A-C0A3038F1D5C} = {18040998-CC22-2BAE-FE7A-C0A3038F1D5C}
+ {60F89955-91C6-3A36-8000-13C592FEC2DF} = {60F89955-91C6-3A36-8000-13C592FEC2DF}
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35} = {EB33566E-DA7F-4D28-9077-88C0B7C77E35}
EndProjectSection
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pngtest", "pngtest\pngtest.vcxproj", "{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}"
ProjectSection(ProjectDependencies) = postProject
+ {60F89955-91C6-3A36-8000-13C592FEC2DF} = {60F89955-91C6-3A36-8000-13C592FEC2DF}
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35} = {EB33566E-DA7F-4D28-9077-88C0B7C77E35}
{D6973076-9317-4EF2-A0B8-B7A18AC0713E} = {D6973076-9317-4EF2-A0B8-B7A18AC0713E}
EndProjectSection
EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlib", "zlib\zlib.vcxproj", "{18040998-CC22-2BAE-FE7A-C0A3038F1D5C}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlib", "zlib\zlib.vcxproj", "{60F89955-91C6-3A36-8000-13C592FEC2DF}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pngvalid", "pngvalid\pngvalid.vcxproj", "{9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}"
+ ProjectSection(ProjectDependencies) = postProject
+ {60F89955-91C6-3A36-8000-13C592FEC2DF} = {60F89955-91C6-3A36-8000-13C592FEC2DF}
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35} = {EB33566E-DA7F-4D28-9077-88C0B7C77E35}
+ {D6973076-9317-4EF2-A0B8-B7A18AC0713E} = {D6973076-9317-4EF2-A0B8-B7A18AC0713E}
+ EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pnglibconf", "pnglibconf\pnglibconf.vcxproj", "{EB33566E-DA7F-4D28-9077-88C0B7C77E35}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -36,12 +48,38 @@
{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Release Library|Win32.Build.0 = Release Library|Win32
{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Release|Win32.ActiveCfg = Release|Win32
{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Release|Win32.Build.0 = Release|Win32
- {18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
- {18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Debug Library|Win32.Build.0 = Debug Library|Win32
- {18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Debug|Win32.ActiveCfg = Debug|Win32
- {18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Debug|Win32.Build.0 = Debug|Win32
- {18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Release Library|Win32.ActiveCfg = Debug|Win32
- {18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Release|Win32.ActiveCfg = Debug|Win32
+ {60F89955-91C6-3A36-8000-13C592FEC2DF}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
+ {60F89955-91C6-3A36-8000-13C592FEC2DF}.Debug Library|Win32.Build.0 = Debug Library|Win32
+ {60F89955-91C6-3A36-8000-13C592FEC2DF}.Debug|Win32.ActiveCfg = Debug|Win32
+ {60F89955-91C6-3A36-8000-13C592FEC2DF}.Debug|Win32.Build.0 = Debug|Win32
+ {60F89955-91C6-3A36-8000-13C592FEC2DF}.Release Library|Win32.ActiveCfg = Release Library|Win32
+ {60F89955-91C6-3A36-8000-13C592FEC2DF}.Release Library|Win32.Build.0 = Release Library|Win32
+ {60F89955-91C6-3A36-8000-13C592FEC2DF}.Release|Win32.ActiveCfg = Release|Win32
+ {60F89955-91C6-3A36-8000-13C592FEC2DF}.Release|Win32.Build.0 = Release|Win32
+ {9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
+ {9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Debug Library|Win32.Build.0 = Debug Library|Win32
+ {9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Debug|Win32.ActiveCfg = Debug|Win32
+ {9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Debug|Win32.Build.0 = Debug|Win32
+ {9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Release Library|Win32.ActiveCfg = Release Library|Win32
+ {9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Release Library|Win32.Build.0 = Release Library|Win32
+ {9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Release|Win32.ActiveCfg = Release|Win32
+ {9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Release|Win32.Build.0 = Release|Win32
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Debug Library|Win32.ActiveCfg = Release|Win32
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Debug Library|Win32.Build.0 = Release|Win32
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Debug|Win32.ActiveCfg = Release|Win32
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Debug|Win32.Build.0 = Release|Win32
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Release Library|Win32.ActiveCfg = Release|Win32
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Release Library|Win32.Build.0 = Release|Win32
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Release|Win32.ActiveCfg = Release|Win32
+ {EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Release|Win32.Build.0 = Release|Win32
+ {277AC57F-313B-4D06-B119-A3CDB672D2FF}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
+ {277AC57F-313B-4D06-B119-A3CDB672D2FF}.Debug Library|Win32.Build.0 = Debug Library|Win32
+ {277AC57F-313B-4D06-B119-A3CDB672D2FF}.Debug|Win32.ActiveCfg = Debug|Win32
+ {277AC57F-313B-4D06-B119-A3CDB672D2FF}.Debug|Win32.Build.0 = Debug|Win32
+ {277AC57F-313B-4D06-B119-A3CDB672D2FF}.Release Library|Win32.ActiveCfg = Release Library|Win32
+ {277AC57F-313B-4D06-B119-A3CDB672D2FF}.Release Library|Win32.Build.0 = Release Library|Win32
+ {277AC57F-313B-4D06-B119-A3CDB672D2FF}.Release|Win32.ActiveCfg = Release|Win32
+ {277AC57F-313B-4D06-B119-A3CDB672D2FF}.Release|Win32.Build.0 = Release|Win32
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 1233ea7..8e02f8d 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -1,8 +1,8 @@
<?xml version="1.0" encoding="utf-8"?>
<!--
- * zlib.props - location of zlib source and build
+ * zlib.props - location of zlib source
*
- * libpng version 1.4.9beta01 - July 8, 2011
+ * libpng version 1.5.10beta01 - February 19, 2012
*
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
*
@@ -11,32 +11,26 @@
* and license in png.h
* You must edit this file to record the location of the zlib
- * official and debug builds unless they are in the default
- * directories:
-
- * official: zlib1
- * debug: zlib debug
+ * source code.
-->
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="4.0"
+ xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup Label="Globals">
- <!-- Place the name of the directory containing the official
- build of zlib and the corresponding header files in this
- property. The directory is expected to contain at least:
+ <!-- Place the name of the directory containing the source of zlib used for
+ debugging in this property.
- zdll.lib # The DLL import library
- zlib.lib # The static library
- zlib.h # The header file
- zconf.h # Another header file included by zlib.h
- -->
- <ZLib1Dir>..\..\..\..\zlib125-dll\zlib-1.2.5</ZLib1Dir>
+ The directory need only contain the '.c' and '.h' files from the
+ source.
- <!-- Place the name of the directory containing the source of
- zlib used for debugging in this property.
- The directory need only contain the '.c' and '.h' files
- from the source. For your own sanity make sure that the
- '.h' files in the source match those from the 'official'
- build above.
+ If you use a relative directory name (as below) then it must be
+ relative to the project directories; these are one level deepers than
+ the directories containing this file.
+
+ If the version of zlib you use does not match that used when the
+ distribution was built you will get warnings from pngtest that the zlib
+ versions do not match. The zlib version used in this build is recorded
+ below:
-->
<ZLibSrcDir>..\..\..\..\zlib-1.2.5</ZLibSrcDir>
</PropertyGroup>
diff --git a/projects/vstudio/zlib/zlib.vcxproj b/projects/vstudio/zlib/zlib.vcxproj
index 94d75a3..d627817 100644
--- a/projects/vstudio/zlib/zlib.vcxproj
+++ b/projects/vstudio/zlib/zlib.vcxproj
@@ -9,6 +9,14 @@
<Configuration>Debug</Configuration>
<Platform>Win32</Platform>
</ProjectConfiguration>
+ <ProjectConfiguration Include="Release Library|Win32">
+ <Configuration>Release Library</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|Win32">
+ <Configuration>Release</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
</ItemGroup>
<ItemGroup>
<ClCompile Include="$(ZLibSrcDir)\adler32.c" />
@@ -28,62 +36,60 @@
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
<Import Project="$(SolutionDir)\zlib.props" />
- <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
- <ConfigurationType>DynamicLibrary</ConfigurationType>
- <WholeProgramOptimization>true</WholeProgramOptimization>
- </PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'" Label="Configuration">
<ConfigurationType>StaticLibrary</ConfigurationType>
</PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+ <ConfigurationType>StaticLibrary</ConfigurationType>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'" Label="Configuration">
+ <ConfigurationType>StaticLibrary</ConfigurationType>
+ </PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
- <ConfigurationType>DynamicLibrary</ConfigurationType>
+ <ConfigurationType>StaticLibrary</ConfigurationType>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+ <ConfigurationType>StaticLibrary</ConfigurationType>
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
<ImportGroup Label="ExtensionSettings">
</ImportGroup>
- <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
- <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
- </ImportGroup>
<ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'" Label="PropertySheets">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
</ImportGroup>
- <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
</ImportGroup>
<PropertyGroup Label="UserMacros" />
- <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
- <LinkIncremental>false</LinkIncremental>
- </PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
<LinkIncremental>true</LinkIncremental>
</PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <LinkIncremental>true</LinkIncremental>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
+ <LinkIncremental>true</LinkIncremental>
+ </PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<LinkIncremental>true</LinkIncremental>
</PropertyGroup>
- <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
- <ClCompile>
- <PreprocessorDefinitions>WIN32;ZLIB_DLL;_DEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
- <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
- <WarningLevel>Level3</WarningLevel>
- <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
- <Optimization>Disabled</Optimization>
- <IntrinsicFunctions>true</IntrinsicFunctions>
- </ClCompile>
- <Link>
- <GenerateDebugInformation>true</GenerateDebugInformation>
- <SubSystem>Windows</SubSystem>
- <Version>1</Version>
- <AdditionalDependencies>msvcrtd.lib;kernel32.lib</AdditionalDependencies>
- <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
- </Link>
- </ItemDefinitionGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <LinkIncremental>true</LinkIncremental>
+ </PropertyGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
<ClCompile>
- <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
- <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
- <WarningLevel>Level3</WarningLevel>
+ <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+ <WarningLevel>TurnOffAllWarnings</WarningLevel>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
+ <BrowseInformation>true</BrowseInformation>
</ClCompile>
<Link>
<TargetMachine>MachineX86</TargetMachine>
@@ -91,10 +97,66 @@
<SubSystem>Windows</SubSystem>
</Link>
</ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <ClCompile>
+ <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <WarningLevel>TurnOffAllWarnings</WarningLevel>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ <Optimization>Disabled</Optimization>
+ <BrowseInformation>true</BrowseInformation>
+ </ClCompile>
+ <Link>
+ <TargetMachine>MachineX86</TargetMachine>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <SubSystem>Windows</SubSystem>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
+ <ClCompile>
+ <WarningLevel>Level3</WarningLevel>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ <Optimization>Full</Optimization>
+ <IntrinsicFunctions>true</IntrinsicFunctions>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ <BufferSecurityCheck>false</BufferSecurityCheck>
+ <BrowseInformation>true</BrowseInformation>
+ <FunctionLevelLinking>true</FunctionLevelLinking>
+ <TreatWarningAsError>true</TreatWarningAsError>
+ <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+ </ClCompile>
+ <Link>
+ <TargetMachine>MachineX86</TargetMachine>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <SubSystem>Windows</SubSystem>
+ </Link>
+ <Lib>
+ <LinkTimeCodeGeneration>true</LinkTimeCodeGeneration>
+ </Lib>
+ </ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
- <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;DEBUGZLIB_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
- <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ <Optimization>Full</Optimization>
+ <IntrinsicFunctions>true</IntrinsicFunctions>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ <BufferSecurityCheck>false</BufferSecurityCheck>
+ <BrowseInformation>true</BrowseInformation>
+ <FunctionLevelLinking>true</FunctionLevelLinking>
+ <TreatWarningAsError>true</TreatWarningAsError>
+ </ClCompile>
+ <Link>
+ <TargetMachine>MachineX86</TargetMachine>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <SubSystem>Windows</SubSystem>
+ </Link>
+ <Lib>
+ <LinkTimeCodeGeneration>true</LinkTimeCodeGeneration>
+ </Lib>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <ClCompile>
+ <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<WarningLevel>Level3</WarningLevel>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
</ClCompile>
diff --git a/scripts/README.txt b/scripts/README.txt
index a446cd6..132d0f5 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,8 +1,9 @@
-Makefiles for libpng version 1.4.9beta01 - July 8, 2011
+Makefiles for libpng version 1.5.10beta01 - February 19, 2012
+pnglibconf.h.prebuilt => Stores configuration settings
makefile.linux => Linux/ELF makefile
- (gcc, creates libpng14.so.14.1.4.9beta01)
+ (gcc, creates libpng15.so.15.1.5.10beta01)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from
@@ -15,12 +16,11 @@
makefile.beos => beos makefile
makefile.bor => Borland makefile (uses bcc)
makefile.cegcc => minge32ce for Windows CE makefile
- makefile.cygwin => Cygwin/gcc makefile
makefile.darwin => Darwin makefile, can use on MacosX
makefile.dec => DEC Alpha UNIX makefile
makefile.dj2 => DJGPP 2 makefile
makefile.elf => Linux/ELF makefile symbol versioning,
- (gcc, creates libpng14.so.14.1.4.9beta01)
+ (gcc, creates libpng15.so.15.1.5.10beta01)
makefile.freebsd => FreeBSD makefile
makefile.gcc => Generic gcc makefile
makefile.hpgcc => HPUX makefile using gcc
@@ -28,40 +28,49 @@
makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64-bit
makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
makefile.intel => Intel C/C++ version 4.0 and later
- makefile.mingw => Mingw makefile
makefile.mips => MIPS makefile
makefile.msc => Microsoft C makefile
makefile.netbsd => NetBSD/cc makefile, makes libpng.so.
makefile.openbsd => OpenBSD makefile
- makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
+ makefile.os2 => OS/2 Makefile (gcc and emx, requires libpng.def)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.sggcc => Silicon Graphics (gcc,
- creates libpng14.so.14.1.4.9beta01)
+ creates libpng15.so.15.1.5.10beta01)
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.solaris => Solaris 2.X makefile (gcc,
- creates libpng14.so.14.1.4.9beta01)
+ creates libpng15.so.15.1.5.10beta01)
makefile.so9 => Solaris 9 makefile (gcc,
- creates libpng14.so.14.1.4.9beta01)
+ creates libpng15.so.15.1.5.10beta01)
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.sunos => Sun makefile
makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile
makefile.tc3 => Turbo C 3.0 makefile
makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and later
- makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model
makevms.com => VMS build script
smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
(Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
Other supporting scripts:
+ README.txt => This file
descrip.mms => VMS makefile for MMS or MMK
libpng-config-body.in => used by several makefiles to create libpng-config
libpng-config-head.in => used by several makefiles to create libpng-config
libpng.pc.in => Used by several makefiles to create libpng.pc
- pngos2.def => OS/2 module definition file used by makefile.os2
- pngwin.def => Module definitions for makefile.cygwin and mingw
- png32ce.def => Module definition file used by makefile.cegcc
- pngwin.rc => Used by the visualc6 and visualc71 projects.
+ pngwin.rc => Used by the visualc71 project.
+ pngwin.def => Used by makefile.os2
+ pngwin.dfn => Used to maintain pngwin.def
SCOPTIONS.ppc => Used with smakefile.ppc
+checksym.awk => Used for maintaining pnglibconf.h
+def.dfn => Used for maintaining pnglibconf.h
+options.awk => Used for maintaining pnglibconf.h
+pnglibconf.dfa => Used for maintaining pnglibconf.h
+pnglibconf.mak => Used for maintaining pnglibconf.h
+sym.dfn => Used for symbol versioning
+symbols.def => Used for symbol versioning
+symbols.dfn => Used for symbol versioning
+vers.dfn => Used for symbol versioning
+
+
Further information can be found in comments in the individual makefiles.
diff --git a/scripts/checksym.awk b/scripts/checksym.awk
new file mode 100755
index 0000000..ba4c99b
--- /dev/null
+++ b/scripts/checksym.awk
@@ -0,0 +1,161 @@
+#!/bin/awk -f
+# Check a list of symbols against the master definition
+# (official) list. Arguments:
+#
+# awk -f checksym.awk official-def list-to-check
+#
+# Output is a file in the current directory called 'symbols.new',
+# stdout holds error messages. Error code indicates success or
+# failure.
+#
+# NOTE: this is a pure, old fashioned, awk script. It will
+# work with any awk
+
+BEGIN{
+ err=0
+ master="" # master file
+ official[1] = "" # defined symbols from master file
+ symbol[1] = "" # defined symbols from png.h
+ removed[1] = "" # removed symbols from png.h
+ lasto = 0 # last ordinal value from png.h
+ mastero = 0 # highest ordinal in master file
+ symbolo = 0 # highest ordinal in png.h
+ missing = "error"# log an error on missing symbols
+}
+
+# Read existing definitions from the master file (the first
+# file on the command line.) This must be a def file and it
+# has definition lines (others are ignored) of the form:
+#
+# symbol @ordinal
+#
+master == "" {
+ master = FILENAME
+}
+FILENAME==master && NF==2 && $2~/^@/ && $1!~/^;/ {
+ o=0+substr($2,2)
+ if (o > 0) {
+ if (official[o] == "") {
+ official[o] = $1
+ if (o > mastero) mastero = o
+ next
+ } else
+ print master ": duplicated symbol:", official[o] ":", $0
+ } else
+ print master ": bad export line format:", $0
+ err = 1
+}
+FILENAME==master && $1==";missing" && NF==2{
+ # This allows the master file to control how missing symbols
+ # are handled; symbols that aren't in either the master or
+ # the new file. Valid values are 'ignore', 'warning' and
+ # 'error'
+ missing = $2
+}
+FILENAME==master {
+ next
+}
+
+# Read new definitions, these are free form but the lines must
+# just be symbol definitions. Lines will be commented out for
+# 'removed' symbols, introduced in png.h using PNG_REMOVED rather
+# than PNG_EXPORT. Use symbols.dfn or pngwin.dfn to generate the
+# input file.
+#
+# symbol @ordinal # two fields, exported symbol
+# ; symbol @ordinal # three fields, removed symbol
+# ; @ordinal # two fields, the last ordinal
+NF==2 && $1 == ";" && $2 ~ /^@[1-9][0-9]*$/ { # last ordinal
+ o=0+substr($2,2)
+ if (lasto == 0 || lasto == o)
+ lasto=o
+ else {
+ print "png.h: duplicated last ordinal:", lasto, o
+ err = 1
+ }
+ next
+}
+NF==3 && $1 == ";" && $3 ~ /^@[1-9][0-9]*$/ { # removed symbol
+ o=0+substr($3,2)
+ if (removed[o] == "" || removed[o] == $2) {
+ removed[o] = $2
+ if (o > symbolo) symbolo = o
+ } else {
+ print "png.h: duplicated removed symbol", o ": '" removed[o] "' != '" $2 "'"
+ err = 1
+ }
+ next
+}
+NF==2 && $2 ~ /^@[1-9][0-9]*$/ { # exported symbol
+ o=0+substr($2,2)
+ if (symbol[o] == "" || symbol[o] == $1) {
+ symbol[o] = $1
+ if (o > symbolo) symbolo = o
+ } else {
+ print "png.h: duplicated symbol", o ": '" symbol[o] "' != '" $1 "'"
+ err = 1
+ }
+}
+{
+ next # skip all other lines
+}
+
+# At the end check for symbols marked as both duplicated and removed
+END{
+ if (symbolo > lasto) {
+ print "highest symbol ordinal in png.h,", symbolo ", exceeds last ordinal from png.h", lasto
+ err = 1
+ }
+ if (mastero > lasto) {
+ print "highest symbol ordinal in", master ",", mastero ", exceeds last ordinal from png.h", lasto
+ err = 1
+ }
+ unexported=0
+ for (o=1; o<=lasto; ++o) {
+ if (symbol[o] == "" && removed[o] == "") {
+ if (unexported == 0) unexported = o
+ if (official[o] == "") {
+ # missing in export list too, so ok
+ if (o < lasto) continue
+ }
+ }
+ if (unexported != 0) {
+ # Symbols in the .def but not in the new file are errors, but
+ # the 'unexported' symbols aren't in either. By default this
+ # is an error too (see the setting of 'missing' at the start),
+ # but this can be reset on the command line or by stuff in the
+ # file - see the comments above.
+ if (missing != "ignore") {
+ if (o-1 > unexported)
+ print "png.h:", missing ": missing symbols:", unexported "-" o-1
+ else
+ print "png.h:", missing ": missing symbol:", unexported
+ if (missing != "warning")
+ err = 1
+ }
+ unexported = 0
+ }
+ if (symbol[o] != "" && removed[o] != "") {
+ print "png.h: symbol", o, "both exported as '" symbol[o] "' and removed as '" removed[o] "'"
+ err = 1
+ } else if (symbol[o] != official[o]) {
+ # either the symbol is missing somewhere or it changed
+ err = 1
+ if (symbol[o] == "")
+ print "png.h: symbol", o, "is exported as '" official[o] "' in", master
+ else if (official[o] == "")
+ print "png.h: exported symbol", o, "'" symbol[o] "' not present in", master
+ else
+ print "png.h: exported symbol", o, "'" symbol[o] "' exists as '" official[o] "' in", master
+ }
+
+ # Finally generate symbols.new
+ if (symbol[o] != "")
+ print " " symbol[o], "@" o > "symbols.new"
+ }
+
+ if (err != 0) {
+ print "*** A new list is in symbols.new ***"
+ exit 1
+ }
+}
diff --git a/scripts/chkfmt b/scripts/chkfmt
new file mode 100755
index 0000000..9da6475
--- /dev/null
+++ b/scripts/chkfmt
@@ -0,0 +1,137 @@
+#!/bin/sh
+#
+# Check the format of the source files in the current directory - checks for a
+# line length of 80 characters max and no tab characters.
+#
+# Optionally arguments are files or directories to check.
+#
+# -v: output the long lines (makes fixing them easier)
+# -e: spawn an editor for each file that needs a change ($EDITOR must be
+# defined). When using -e the script MUST be run from an interactive
+# command line.
+verbose=
+edit=
+vers=
+test "$1" = "-v" && {
+ shift
+ verbose=yes
+}
+test "$1" = "-e" && {
+ shift
+ if test -n "$EDITOR"
+ then
+ edit=yes
+
+ # Copy the standard streams for the editor
+ exec 3>&0 4>&1 5>&2
+ else
+ echo "chkfmt -e: EDITOR must be defined" >&2
+ exit 1
+ fi
+}
+
+# Function to edit a single file - if the file isn't changed ask the user
+# whether or not to continue. This stuff only works if the script is run from
+# the command line (otherwise, don't specify -e or you will be sorry).
+doed(){
+ cp "$file" "$file".orig
+ "$EDITOR" "$file" 0>&3 1>&4 2>&5 3>&- 4>&- 5>&- || exit 1
+ if cmp -s "$file".orig "$file"
+ then
+ rm "$file".orig
+ echo -n "$file: file not changed, type anything to continue: " >&5
+ read ans 0>&3
+ test -n "$ans" || return 1
+ fi
+ return 0
+}
+
+# In beta versions the version string which appears in files can be a little
+# long and cause spuriously overlong lines. To avoid this subtitute the version
+# string with a 'standard' version a.b.cc before checking for long lines.
+if test -r png.h
+then
+ vers="`sed -n -e \
+ 's/^#define PNG_LIBPNG_VER_STRING .\([0-9]\.[0-9]\.[0-9][0-9a-z]*\).$/\1/p' \
+ png.h`"
+ echo "chkfmt: checking version $vers"
+fi
+if test -z "$vers"
+then
+ echo "chkfmt: png.h not found, ignoring version number" >&2
+fi
+
+test -n "$1" || set -- .
+find "$@" \( -type d \( -name '.git' -o -name '.libs' -o -name 'projects' \) \
+ -prune \) -o \( -type f \
+ ! -name '*.[oa]' ! -name '*.l[oa]' ! -name '*.png' ! -name '*.out' \
+ ! -name '*.jpg' ! -name '*.patch' ! -name '*.obj' ! -name '*.exe' \
+ ! -name '*.com' ! -name '*.tar.*' ! -name '*.zip' ! -name '*.ico' \
+ ! -name '*.res' ! -name '*.rc' ! -name '*.mms' ! -name '*.rej' \
+ ! -name '*.dsp' ! -name '*.orig' ! -name '*.dfn' ! -name '*.swp' \
+ ! -name '~*' ! -name '*.3' \
+ ! -name 'missing' ! -name 'mkinstalldirs' ! -name 'depcomp' \
+ ! -name 'aclocal.m4' ! -name 'install-sh' ! -name 'Makefile.in' \
+ ! -name 'ltmain.sh' ! -name 'config*' -print \) | {
+ st=0
+ while read file
+ do
+ case "$file" in
+ *.mak|*[Mm]akefile.*|*[Mm]akefile)
+ # Makefiles require tabs, dependency lines can be this long.
+ check_tabs=
+ line_length=100;;
+ *.awk)
+ # Includes literal tabs
+ check_tabs=
+ # The following is arbitrary
+ line_length=132;;
+ *contrib/*/*.[ch])
+ check_tabs=yes
+ line_length=96;;
+ *)
+ check_tabs=yes
+ line_length=80;;
+ esac
+
+ # Note that vers can only contain 0-9, . and a-z
+ if test -n "$vers"
+ then
+ sed -e "s/$vers/a.b.cc/g" "$file" >"$file".$$
+ else
+ cp "$file" "$file".$$
+ fi
+ splt="`fold -$line_length "$file".$$ | diff -c "$file".$$ -`"
+ rm "$file".$$
+
+ if test -n "$splt"
+ then
+ echo "$file: lines too long"
+ st=1
+ if test -n "$EDITOR" -a -n "$edit"
+ then
+ doed "$file" || exit 1
+ elif test -n "$verbose"
+ then
+ echo "$splt"
+ fi
+ fi
+ if test -n "$check_tabs"
+ then
+ tab="`tr -c -d '\t' <"$file"`"
+ if test -n "$tab"
+ then
+ echo "$file: file contains tab characters"
+ st=1
+ if test -n "$EDITOR" -a -n "$edit"
+ then
+ doed "$file" || exit 1
+ elif test -n "$verbose"
+ then
+ echo "$splt"
+ fi
+ fi
+ fi
+ done
+ exit $st
+}
diff --git a/scripts/def.dfn b/scripts/def.dfn
new file mode 100644
index 0000000..f991863
--- /dev/null
+++ b/scripts/def.dfn
@@ -0,0 +1,38 @@
+/* def.dfn - define format of libpng.def
+ *
+ * Last changed in libpng version 1.5.7 [December 15, 2011]
+ * Copyright (c) 2010-2011 Glenn Randers-Pehrson
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+/* These macros exist to make the header and trailer shorter below: */
+#define S PNG_DEFN_MAGIC
+#define E PNG_DEFN_END
+
+/* Write the export file header: */
+S-;---------------------------------------------------------------E
+S-; LIBPNG module definition file for OS/2-E
+S-;---------------------------------------------------------------E
+S--E
+S-; If you give the library an explicit name one or other files-E
+S-; may need modifying to support the new name on one or more-E
+S-; systems.-E
+S-LIBRARY-E
+S-OS2 DESCRIPTION "PNG image compression library"-E
+S-OS2 CODE PRELOAD MOVEABLE DISCARDABLE-E
+S--E
+S-EXPORTS-E
+S-;Version 1.5.0beta58-E
+
+/* NOTE: PNG_JOIN is interpreted by the calling script as a signal to
+ * join the two things on either side, so we can do symbol
+ * substitution within the name, regular C ## joins the pp-tokens,
+ * not their final values.
+ */
+#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
+ PNG_DEFN_MAGIC- SYMBOL_PREFIX PNG_JOIN name-PNG_DEFN_END
+
+#include "../png.h"
diff --git a/scripts/descrip.mms b/scripts/descrip.mms
index d0642c0..99ea1ab 100644
--- a/scripts/descrip.mms
+++ b/scripts/descrip.mms
@@ -33,20 +33,20 @@
# Other dependencies.
-png.obj : png.h, pngconf.h, pngpriv.h
-pngpread.obj : png.h, pngconf.h, pngpriv.h
-pngset.obj : png.h, pngconf.h, pngpriv.h
-pngget.obj : png.h, pngconf.h, pngpriv.h
-pngread.obj : png.h, pngconf.h, pngpriv.h
-pngrtran.obj : png.h, pngconf.h, pngpriv.h
-pngrutil.obj : png.h, pngconf.h, pngpriv.h
-pngerror.obj : png.h, pngconf.h, pngpriv.h
-pngmem.obj : png.h, pngconf.h, pngpriv.h
-pngrio.obj : png.h, pngconf.h, pngpriv.h
-pngwio.obj : png.h, pngconf.h, pngpriv.h
-pngtrans.obj : png.h, pngconf.h, pngpriv.h
-pngwrite.obj : png.h, pngconf.h, pngpriv.h
-pngwtran.obj : png.h, pngconf.h, pngpriv.h
-pngwutil.obj : png.h, pngconf.h, pngpriv.h
+png.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngpread.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngset.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngget.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngread.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngrtran.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngrutil.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngerror.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngmem.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngrio.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngwio.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngtrans.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngwrite.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngwtran.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
+pngwutil.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
pngtest.obj : png.h, pngconf.h
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index 68e46e9..44c47f9 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@
# Modeled after libxml-config.
-version=1.4.9beta01
+version=1.5.10beta01
prefix=""
libdir=""
libs=""
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index b3fced0..32123af 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -1,10 +1,10 @@
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
-includedir=@includedir@/libpng14
+includedir=@includedir@/libpng15
Name: libpng
Description: Loads and saves PNG files
-Version: 1.4.9beta01
-Libs: -L${libdir} -lpng14
+Version: 1.5.10beta01
+Libs: -L${libdir} -lpng15
Cflags: -I${includedir}
diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu
index 3dd9fef..b5e5a33 100644
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -1,6 +1,6 @@
# makefile for libpng on Solaris 2.x with cc
# Contributed by William L. Sebok, based on makefile.linux
-# Copyright (C) 2002, 2006, 2010 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1998 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
@@ -9,8 +9,8 @@
# and license in png.h
# Library name:
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -29,7 +29,7 @@
SUN_CC_FLAGS=-fast -xtarget=ultra
SUN_LD_FLAGS=-fast -xtarget=ultra
-# where make install puts libpng.a, libpng14.so and libpng14/png.h
+# where make install puts libpng.a, libpng15.so and libpng15/png.h
prefix=/a
exec_prefix=$(prefix)
@@ -82,6 +82,10 @@
all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+include scripts/pnglibconf.mak
+DELETE = $(RM_F)
+DFNFLAGS = $(DEFS) $(CPPFLAGS)
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -91,7 +95,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -102,7 +106,7 @@
echo R_opts=\"-R$(LIBPATH)\"; \
echo ccopts=\"-xtarget=ultra\"; \
echo ldopts=\"-xtarget=ultra\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -131,12 +135,12 @@
test: pngtest
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -218,20 +222,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index 916d94e..a0331d6 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -1,6 +1,6 @@
# makefile for libpng on Solaris 2.x with cc
# Contributed by William L. Sebok, based on makefile.linux
-# Copyright (C) 2002, 2006, 2010 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1998 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
@@ -9,8 +9,8 @@
# and license in png.h
# Library name:
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -29,7 +29,7 @@
SUN_CC_FLAGS=-fast -xtarget=ultra -xarch=v9
SUN_LD_FLAGS=-fast -xtarget=ultra -xarch=v9
-# where make install puts libpng.a, libpng14.so and libpng14/png.h
+# where make install puts libpng.a, libpng15.so and libpng15/png.h
prefix=/a
exec_prefix=$(prefix)
@@ -47,7 +47,7 @@
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng15 -lz -lm
INCPATH=$(prefix)/include
LIBPATH=$(exec_prefix)/lib
@@ -82,6 +82,10 @@
all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+include scripts/pnglibconf.mak
+DELETE = $(RM_F)
+DFNFLAGS = $(DEFS) $(CPPFLAGS)
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -91,7 +95,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -102,7 +106,7 @@
echo R_opts=\"-R$(LIBPATH)\"; \
echo ccopts=\"-xtarget=ultra -xarch=v9\"; \
echo ldopts=\"-xtarget=ultra -xarch=v9\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -134,9 +138,9 @@
install-headers: png.h pngconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -218,20 +222,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.acorn b/scripts/makefile.acorn
index a0e577b..00b8fb5 100644
--- a/scripts/makefile.acorn
+++ b/scripts/makefile.acorn
@@ -43,8 +43,15 @@
.c.o:
cc $(ccflags) -o $@ $<
+# See scripts.mak.libpngconf for how to generate this:
+@.h.libpngconf: @.scripts.h.libpngconf
+ copy @.scripts.h.libpngconf $@
# Static dependencies:
+@.o.png @.o.pngerror @.o.pngrio @.o.pngwio @.o.pngmem \
+@.o.pngpread @.o.pngset @.o.pngget @.o.pngread @.o.pngrtran \
+@.o.pngrutil @.o.pngtrans @.o.pngwrite @.o.pngwtran @.o.pngwutil \
+@.o.pngtest: @.h.libpngconf
# Dynamic dependencies:
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index f8a7dd1..bb4c40d 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -21,8 +21,8 @@
RM_F = rm -f
LN_SF = ln -f -s
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15
prefix=/usr/local
INCPATH=$(prefix)/include
@@ -46,8 +46,8 @@
CRELEASE = -O2
LDRELEASE = -s
WARNMORE=-W -Wall
-CFLAGS = -D_ALL_SOURCE -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
-LDFLAGS = -L. -L$(ZLIBLIB) -lpng14 -lz -lm $(LDRELEASE)
+CFLAGS = -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
+LDFLAGS = -L. -L$(ZLIBLIB) -lpng15 -lz -lm $(LDRELEASE)
# File extensions
O=.o
@@ -62,6 +62,10 @@
# Targets
all: $(LIBNAME)$(A) pngtest$(E)
+include scripts/pnglibconf.mak
+REMOVE = $(RM_F)
+DFNFLAGS = $(DEFS) $(CPPFLAGS)
+
$(LIBNAME)$(A): $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -78,11 +82,14 @@
-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
-@$(RM_F) $(DI)/$(LIBNAME)/png.h
-@$(RM_F) $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/$(LIBNAME)/pnglibconf.h
-@$(RM_F) $(DI)/png.h
-@$(RM_F) $(DI)/pngconf.h
- cp png.h pngconf.h $(DI)/$(LIBNAME)
+ -@$(RM_F) $(DI)/pnglibconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
chmod 644 $(DI)/$(LIBNAME)/png.h \
- $(DI)/$(LIBNAME)/pngconf.h
+ $(DI)/$(LIBNAME)/pngconf.h \
+ $(DI)/$(LIBNAME)/pnglibconf.h
-@$(RM_F) -r $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-@$(RM_F) $(DL)/$(LIBNAME)$(A)
@@ -93,22 +100,22 @@
(cd $(DI); $(LN_SF) libpng/* .;)
clean:
- $(RM_F) *.o $(LIBNAME)$(A) pngtest pngout.png
+ $(RM_F) *.o $(LIBNAME)$(A) pngtest pngout.png pnglibconf.h
-png$(O): png.h pngconf.h pngpriv.h
-pngerror$(O): png.h pngconf.h pngpriv.h
-pngget$(O): png.h pngconf.h pngpriv.h
-pngmem$(O): png.h pngconf.h pngpriv.h
-pngpread$(O): png.h pngconf.h pngpriv.h
-pngread$(O): png.h pngconf.h pngpriv.h
-pngrio$(O): png.h pngconf.h pngpriv.h
-pngrtran$(O): png.h pngconf.h pngpriv.h
-pngrutil$(O): png.h pngconf.h pngpriv.h
-pngset$(O): png.h pngconf.h pngpriv.h
-pngtrans$(O): png.h pngconf.h pngpriv.h
-pngwio$(O): png.h pngconf.h pngpriv.h
-pngwrite$(O): png.h pngconf.h pngpriv.h
-pngwtran$(O): png.h pngconf.h pngpriv.h
-pngwutil$(O): png.h pngconf.h pngpriv.h
+png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.amiga b/scripts/makefile.amiga
index 8bf0f45..228b5c2 100644
--- a/scripts/makefile.amiga
+++ b/scripts/makefile.amiga
@@ -6,8 +6,6 @@
# For conditions of distribution and use, see the disclaimer
# and license in png.h
#
-# Note: Use #define PNG_READ_BIG_ENDIAN_SUPPORTED in pngconf.h
-#
# Location/path of zlib include files
ZLIB=/zlib
#compiler
@@ -26,6 +24,8 @@
LN= slink
# file deletion command
RM= delete quiet
+# file copy command?
+CP= copy
# library (.lib) file creation command
AR= oml
# make directory command
@@ -41,6 +41,11 @@
-$(RM) libpng.lib
$(AR) libpng.lib r $(OBJS)
+$(OBJS): pngpriv.h png.h pngconf.h pnglibconf.h pnginfo.h pngstruct.h pngdebug.h
+
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+$(CP) scripts/pnglibconf.h.prebuilt pnglibconf.h
+
pngtest: pngtest.o libpng.lib
$(LN) <WITH <
$(LDFLAGS)
diff --git a/scripts/makefile.atari b/scripts/makefile.atari
index 0e1ca72..1aeb7d5 100644
--- a/scripts/makefile.atari
+++ b/scripts/makefile.atari
@@ -38,6 +38,11 @@
$(LBR): $(OBJS)
+$(OBJS): pngpriv.h png.h pngconf.h pnglibconf.h pnginfo.h pngstruct.h pngdebug.h
+
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt pnglibconf.h
+
pngtest.ttp: pngtest.o $(LBR)
$(CC) $(CFLAGS) $(LDFLAGS) -o$@ pngtest.o
@@ -47,9 +52,12 @@
-@mkdir $(DESTDIR)$(LIBPATH)
-@rm -f $(DESTDIR)$(INCPATH)/png.h
-@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
+ -@rm -f $(DESTDIR)$(INCPATH)/pnglibconf.h
cp png.h $(DESTDIR)$(INCPATH)/libpng
cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
+ cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
ln -f -s $(LIBNAME)/* .)
diff --git a/scripts/makefile.bc32 b/scripts/makefile.bc32
index 2020e6e..ebbd5ce 100644
--- a/scripts/makefile.bc32
+++ b/scripts/makefile.bc32
@@ -109,22 +109,27 @@
## Minor Targets
-png.obj: png.c png.h pngconf.h pngpriv.h
-pngerror.obj: pngerror.c png.h pngconf.h pngpriv.h
-pngget.obj: pngget.c png.h pngconf.h pngpriv.h
-pngmem.obj: pngmem.c png.h pngconf.h pngpriv.h
-pngpread.obj: pngpread.c png.h pngconf.h pngpriv.h
-pngread.obj: pngread.c png.h pngconf.h pngpriv.h
-pngrio.obj: pngrio.c png.h pngconf.h pngpriv.h
-pngrtran.obj: pngrtran.c png.h pngconf.h pngpriv.h
-pngrutil.obj: pngrutil.c png.h pngconf.h pngpriv.h
-pngset.obj: pngset.c png.h pngconf.h pngpriv.h
-pngtrans.obj: pngtrans.c png.h pngconf.h pngpriv.h
-pngwio.obj: pngwio.c png.h pngconf.h pngpriv.h
-pngwrite.obj: pngwrite.c png.h pngconf.h pngpriv.h
-pngwtran.obj: pngwtran.c png.h pngconf.h pngpriv.h
-pngwutil.obj: pngwutil.c png.h pngconf.h pngpriv.h
-pngtest.obj: pngtest.c png.h pngconf.h
+# see scripts\pnglibconf.mak for how to make this file
+# with different options
+pnglibconf.h: scripts\pnglibconf.h.prebuilt
+ copy scripts\pnglibconf.h.prebuilt $@
+
+png.obj: png.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.obj: pngerror.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.obj: pngget.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.obj: pngmem.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.obj: pngpread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.obj: pngread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.obj: pngrio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.obj: pngrtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.obj: pngrutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.obj: pngset.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.obj: pngtrans.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.obj: pngwio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.obj: pngwrite.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.obj: pngwtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.obj: pngwutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtest.obj: pngtest.c png.h pngconf.h pnglibconf.h
$(LIBNAME): $(OBJS)
-del $(LIBNAME)
@@ -134,6 +139,7 @@
# Cleanup
clean:
+ -del pnglibconf.h
-del *.obj
-del $(LIBNAME)
-del pngtest.exe
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index bcf0980..749db78 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -1,6 +1,6 @@
# makefile for libpng on BeOS x86 ELF with gcc
# modified from makefile.linux by Sander Stoks
-# Copyright (C) 2002, 2006, 2008, 2010 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006, 2008, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1999 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
#
@@ -9,8 +9,8 @@
# and license in png.h
# Library name:
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -45,7 +45,7 @@
# LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz
-# where make install puts libpng.a, libpng14.so*, and png.h
+# where make install puts libpng.a, libpng15.so*, and png.h
prefix=/usr/local
exec_prefix=$(prefix)
INCPATH=$(prefix)/include
@@ -78,6 +78,10 @@
all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+# try include scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -87,13 +91,13 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
echo prefix=\"$(prefix)\"; \
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo libs=\"-lpng14 -lz \"; \
+ echo libs=\"-lpng15 -lz \"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -106,17 +110,17 @@
$(LIBSOMAJ) $(OBJSDLL) $(LDFLAGS)
pngtest: pngtest.o $(LIBSO)
- $(CC) -L$(ZLIBLIB) -L. -lz -lpng14 -o pngtest pngtest.o
+ $(CC) -L$(ZLIBLIB) -L. -lz -lpng15 -o pngtest pngtest.o
test: pngtest
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -128,7 +132,6 @@
(cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
install-shared: install-headers $(LIBSOMAJ) libpng.pc
-
-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
-@$(RM_F) $(DL)/$(LIBSO)
-@$(RM_F) $(DL)/$(LIBSOREL)
@@ -189,24 +192,24 @@
clean:
$(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
$(LIBSO) $(LIBSOMAJ)* pngtesti \
- libpng.pc
+ pnglibconf.h libpng.pc
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.bor b/scripts/makefile.bor
index dcc3c63..96d5e86 100644
--- a/scripts/makefile.bor
+++ b/scripts/makefile.bor
@@ -108,6 +108,10 @@
all: libpng pngtest
+# try !inlude scripts\pnglibconf.mak for more options
+pnglibconf.h: scripts\pnglibconf.h.prebuilt
+ copy scripts\pnglibconf.h.prebuilt $@
+
libpng: $(LIBNAME)
pngtest: pngtest$(MODEL).exe
@@ -117,21 +121,21 @@
## Minor Targets
-png.obj: png.c png.h pngconf.h pngpriv.h
-pngerror.obj: pngerror.c png.h pngconf.h pngpriv.h
-pngget.obj: pngget.c png.h pngconf.h pngpriv.h
-pngmem.obj: pngmem.c png.h pngconf.h pngpriv.h
-pngpread.obj: pngpread.c png.h pngconf.h pngpriv.h
-pngread.obj: pngread.c png.h pngconf.h pngpriv.h
-pngrio.obj: pngrio.c png.h pngconf.h pngpriv.h
-pngrtran.obj: pngrtran.c png.h pngconf.h pngpriv.h
-pngrutil.obj: pngrutil.c png.h pngconf.h pngpriv.h
-pngset.obj: pngset.c png.h pngconf.h pngpriv.h
-pngtrans.obj: pngtrans.c png.h pngconf.h pngpriv.h
-pngwio.obj: pngwio.c png.h pngconf.h pngpriv.h
-pngwrite.obj: pngwrite.c png.h pngconf.h pngpriv.h
-pngwtran.obj: pngwtran.c png.h pngconf.h pngpriv.h
-pngwutil.obj: pngwutil.c png.h pngconf.h pngpriv.h
+png.obj: png.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.obj: pngerror.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.obj: pngget.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.obj: pngmem.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.obj: pngpread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.obj: pngread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.obj: pngrio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.obj: pngrtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.obj: pngrutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.obj: pngset.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.obj: pngtrans.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.obj: pngwio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.obj: pngwrite.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.obj: pngwtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.obj: pngwutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(LIBNAME): $(OBJS)
-del $(LIBNAME)
@@ -139,7 +143,7 @@
$(LIBOBJS), libpng$(MODEL)
|
-pngtest$(MODEL).obj: pngtest.c png.h pngconf.h
+pngtest$(MODEL).obj: pngtest.c png.h pngconf.h pnglibconf.h
$(CC) $(CFLAGS) -opngtest$(MODEL) -c pngtest.c
pngtest$(MODEL).exe: pngtest$(MODEL).obj
@@ -147,6 +151,7 @@
# Clean up anything else you want
clean:
+ -del pnglibconf.h
-del *.obj
-del *.exe
-del *.lib
diff --git a/scripts/makefile.cegcc b/scripts/makefile.cegcc
index 06c9c4d..fbc3d78 100644
--- a/scripts/makefile.cegcc
+++ b/scripts/makefile.cegcc
@@ -22,16 +22,16 @@
# make clean
VERMAJ = 1
-VERMIN = 4
-VERMIC = 9
+VERMIN = 5
+VERMIC = 10
VER = $(VERMAJ).$(VERMIN).$(VERMIC)
NAME = libpng
PACKAGE = $(NAME)-$(VER)
-BIN = libpng14-0.dll
-LIB = libpng14.a libpng14.dll.a libpng.a libpng.dll.a scripts/png32ce.def
-INCLUDE = png.h pngconf.h pngpriv.h
-PC = libpng14.pc libpng.pc
+BIN = libpng15-0.dll
+LIB = libpng15.a libpng15.dll.a libpng.a libpng.dll.a
+INCLUDE = png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+PC = libpng15.pc libpng.pc
MANIFESTVERBIN = "Libpng-$(VER): Binary files"
MANIFESTVERDEV = "Libpng-$(VER): Developer files"
@@ -64,7 +64,10 @@
compilation:
@echo " * Compilation of $(PACKAGE)"
- cd $(PACKAGE) && CPPFLAGS="$(CPPFLAGS) -DPNG_BUILD_DLL -DPNG_CONSOLE_IO_SUPPORTED -D_WIN32_WCE=0x0420" CFLAGS="$(CFLAGS) -mms-bitfields -O3 -pipe -fomit-frame-pointer" LDFLAGS="$(LDFLAGS) -Wl,--enable-auto-import -Wl,-s" ./configure --prefix=/opt/wince --host=arm-mingw32ce && make
+ cd $(PACKAGE) && CPPFLAGS="$(CPPFLAGS) -DPNG_CONSOLE_IO_SUPPORTED -D_WIN32_WCE=0x0420" \
+ CFLAGS="$(CFLAGS) -mms-bitfields -O3 -pipe -fomit-frame-pointer" \
+ LDFLAGS="$(LDFLAGS) -Wl,--enable-auto-import -Wl,-s" \
+ ./configure --prefix=/opt/wince --host=arm-mingw32ce && make
copy:
@echo " * Copy of binary and development files"
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index 88e7f06..337a815 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -1,5 +1,5 @@
# makefile for libpng on Darwin / Mac OS X
-# Copyright (C) 2002, 2004, 2006, 2008, 2010 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2004, 2006, 2008, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 2001 Christoph Pfisterer
# derived from makefile.linux:
# Copyright (C) 1998, 1999 Greg Roelofs
@@ -9,7 +9,8 @@
# For conditions of distribution and use, see the disclaimer
# and license in png.h
-# where "make install" puts libpng.a, libpng14.dylib, png.h and pngconf.h
+# where "make install" puts libpng.a, libpng15.dylib, png.h, pngconf.h,
+# and pnglibconf.h
prefix=/usr/local
exec_prefix=$(prefix)
@@ -20,8 +21,8 @@
ZLIBINC=../zlib
# Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).dylib
@@ -36,10 +37,11 @@
LN_SF=ln -sf
RANLIB=ranlib
RM_F=/bin/rm -f
+ARCH="-arch i386 -arch x86_64"
# CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops
-CFLAGS=-I$(ZLIBINC) -W -Wall -O -funroll-loops
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng14 -lz
+CFLAGS=-I$(ZLIBINC) -W -Wall -O -funroll-loops $(ARCH)
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng15 -lz $(ARCH)
INCPATH=$(prefix)/include
LIBPATH=$(exec_prefix)/lib
@@ -74,6 +76,10 @@
all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -83,14 +89,14 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
echo prefix=\"$(prefix)\"; \
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz\"; \
+ echo libs=\"-lpng15 -lz\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -100,7 +106,7 @@
$(LIBSOMAJ): $(OBJSDLL)
$(CC) -dynamiclib \
-install_name $(LIBPATH)/$(LIBSOMAJ) \
- -current_version 14 -compatibility_version 14 \
+ -current_version 15 -compatibility_version 15 \
-o $(LIBSOMAJ) \
$(OBJSDLL) -L$(ZLIBLIB) -lz
@@ -110,12 +116,12 @@
test: pngtest
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -187,7 +193,7 @@
clean:
$(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
- libpng.pc $(LIBNAME).*dylib pngtesti
+ libpng.pc $(LIBNAME).*dylib pngtesti pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -195,20 +201,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index 85d6e19..5301d87 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -1,5 +1,5 @@
# makefile for libpng on DEC Alpha Unix
-# Copyright (C) 2000-2002, 2006, 2010 Glenn Randers-Pehrson
+# Copyright (C) 2000-2002, 2006, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
@@ -7,8 +7,8 @@
# and license in png.h
# Library name:
-PNGMAJ = 14
-LIBNAME = libpng14
+PNGMAJ = 15
+LIBNAME = libpng15
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -62,6 +62,10 @@
all: $(LIBSO) libpng.a pngtest libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -71,7 +75,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -79,7 +83,7 @@
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
echo ccopts=\"-std\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -96,12 +100,12 @@
test: pngtest
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@/bin/rm -f $(DI)/libpng
(cd $(DI); $(LN_SF)(LIBNAME) libpng; $(LN_SF)(LIBNAME)/* .)
@@ -175,24 +179,24 @@
clean:
/bin/rm -f *.o libpng.a pngtest pngtesti pngout.png \
libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc
+ libpng.pc pnglibconf.h
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.dj2 b/scripts/makefile.dj2
index fa8eb74..87a05a3 100644
--- a/scripts/makefile.dj2
+++ b/scripts/makefile.dj2
@@ -1,5 +1,5 @@
# DJGPP (DOS gcc) makefile for libpng
-# Copyright (C) 2002, 2006, 2009-2010 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006, 2009-2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
@@ -24,6 +24,10 @@
all: libpng.a pngtest
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
ar rc $@ $(OBJS)
$(RANLIB) $@
@@ -35,24 +39,24 @@
test: pngtest
./pngtest
clean:
- rm -f *.o libpng.a pngtest pngout.png
+ rm -f *.o libpng.a pngtest pngout.png pnglibconf.h
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.elf b/scripts/makefile.elf
index 090b878..5af43b1 100644
--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -1,5 +1,5 @@
-# makefile for libpng.a and libpng14.so on Linux ELF with gcc
-# Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010 Greg Roelofs
+# makefile for libpng.a and libpng15.so on Linux ELF with gcc
+# Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010-2011 Greg Roelofs
# and Glenn Randers-Pehrson
# Copyright (C) 1996, 1997 Andreas Dilger
#
@@ -10,19 +10,19 @@
# Modified for Debian by Junichi Uekawa and Josselin Mouette
# Major modifications are:
# * link libpng explicitly with libz and libm
-# * $(OLDSO).14 is a symlink rather than a different library
+# * $(OLDSO).15 is a symlink rather than a different library
# * versioned symbols
# Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).so
LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
LIBSOREL=$(LIBSOMAJ).$(RELEASE)
OLDSO=libpng.so
-OLDSOMAJ=libpng.so.14
+OLDSOMAJ=libpng.so.15
# Utilities:
AR_RC=ar rc
@@ -32,8 +32,8 @@
RANLIB=ranlib
RM_F=/bin/rm -f
-# where "make install" puts libpng14.a, libpng14.so*,
-# libpng14/png.h and libpng14/pngconf.h
+# where "make install" puts libpng15.a, libpng15.so*,
+# libpng15/png.h, libpng15/pngconf.h, and libpng15/pnglibconf.h
# Prefix must be a full pathname.
prefix=/usr/local
exec_prefix=$(prefix)
@@ -57,7 +57,7 @@
CFLAGS=-W -Wall -D_REENTRANT -O2 \
$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -lpng14
+LDFLAGS=-L. -lpng15
LDFLAGS_A=libpng.a -lz -lm
LIBADDFLAGS=-lz -lm
@@ -95,6 +95,10 @@
all: libpng.a $(LIBSO) pngtest pngtest-static libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -104,11 +108,11 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
-libpng.syms: png.h pngconf.h
+libpng.syms: png.h pngconf.h pnglibconf.h
$(CC) $(CFLAGS) -E -DPNG_BUILDSYMS -DPNG_INTERNAL png.h |\
- awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG14_%s {global:\n",PNGMAJ)}\
+ awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG15_%s {global:\n",PNGMAJ)}\
{ for (i=1;i+2<=NF;++i)\
if ($$(i)=="PNG_FUNCTION_EXPORT" && $$(i+2)=="END")\
print $$(i+1) ";";\
@@ -125,8 +129,8 @@
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
echo L_opts=\"\"; \
echo R_opts=\"\"; \
- echo libs=\"-lpng14\"; \
- echo all_libs=\"-lpng14 $(LIBADDFLAGS)\"; \
+ echo libs=\"-lpng15\"; \
+ echo all_libs=\"-lpng15 $(LIBADDFLAGS)\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -155,12 +159,12 @@
@echo ""
./pngtest-static
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -232,7 +236,7 @@
clean:
$(RM_F) *.o libpng.a libpng.syms pngtest pngout.png libpng-config \
$(LIBSO) $(LIBSOMAJ)* pngtest-static pngtesti \
- libpng.pc
+ libpng.pc pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -240,20 +244,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.freebsd b/scripts/makefile.freebsd
index c0014af..994608c 100644
--- a/scripts/makefile.freebsd
+++ b/scripts/makefile.freebsd
@@ -6,7 +6,7 @@
# and license in png.h
PREFIX?= /usr/local
-SHLIB_VER?= 14
+SHLIB_VER?= 15
LIB= png
SHLIB_MAJOR= ${SHLIB_VER}
@@ -17,13 +17,14 @@
# where make install puts libpng.a and png.h
DESTDIR= ${PREFIX}
LIBDIR= /lib
-INCS= png.h pngconf.h pngpriv.h
+INCS= png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
INCSDIR= /include/libpng
INCDIR= ${INCSDIR} # for 4.x bsd.lib.mk
MAN= libpng.3 libpngpf.3 png.5
MANDIR= /man/man
SYMLINKS= libpng/png.h ${INCSDIR}/../png.h \
- libpng/pngconf.h ${INCSDIR}/../pngconf.h
+ libpng/pngconf.h ${INCSDIR}/../pngconf.h \
+ libpng/pnglibconf.h ${INCSDIR}/../pnglibconf.h
LDADD+= -lm -lz
DPADD+= ${LIBM} ${LIBZ}
@@ -41,6 +42,10 @@
test: pngtest
./pngtest
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
chmod a-w *.[ch35] $(DOCS) scripts/*
diff --git a/scripts/makefile.gcc b/scripts/makefile.gcc
index b31adee..2e5b611 100644
--- a/scripts/makefile.gcc
+++ b/scripts/makefile.gcc
@@ -41,6 +41,10 @@
# Targets
all: static
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
.c$(O):
$(CC) -c $(CFLAGS) -I$(ZLIBINC) $<
@@ -62,22 +66,22 @@
$(LD) $(LDFLAGS) -L$(ZLIBLIB) -o $@ pngtest$(O) libpng$(A) $(LIBS)
clean:
- $(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png
+ $(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png pnglibconf.h
-png$(O): png.h pngconf.h pngpriv.h
-pngerror$(O): png.h pngconf.h pngpriv.h
-pngget$(O): png.h pngconf.h pngpriv.h
-pngmem$(O): png.h pngconf.h pngpriv.h
-pngpread$(O): png.h pngconf.h pngpriv.h
-pngread$(O): png.h pngconf.h pngpriv.h
-pngrio$(O): png.h pngconf.h pngpriv.h
-pngrtran$(O): png.h pngconf.h pngpriv.h
-pngrutil$(O): png.h pngconf.h pngpriv.h
-pngset$(O): png.h pngconf.h pngpriv.h
-pngtrans$(O): png.h pngconf.h pngpriv.h
-pngwio$(O): png.h pngconf.h pngpriv.h
-pngwrite$(O): png.h pngconf.h pngpriv.h
-pngwtran$(O): png.h pngconf.h pngpriv.h
-pngwutil$(O): png.h pngconf.h pngpriv.h
+png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.hp64 b/scripts/makefile.hp64
index cbefeca..b5b631d 100644
--- a/scripts/makefile.hp64
+++ b/scripts/makefile.hp64
@@ -1,5 +1,5 @@
# makefile for libpng, HPUX (10.20 and 11.00) using the ANSI/C product.
-# Copyright (C) 1999-2002, 2006, 2009, 2010 Glenn Randers-Pehrson
+# Copyright (C) 1999-2002, 2006, 2009, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42
# contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
#
@@ -19,8 +19,8 @@
# SHAREDLIB=libz.sl
# Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).sl
@@ -44,7 +44,7 @@
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
-# where make install puts libpng.a, libpng14.sl, and png.h
+# where make install puts libpng.a, libpng15.sl, and png.h
prefix=/opt/libpng
exec_prefix=$(prefix)
INCPATH=$(prefix)/include
@@ -80,6 +80,10 @@
all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -89,7 +93,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -97,7 +101,7 @@
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -114,12 +118,12 @@
test: pngtest
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -193,7 +197,7 @@
clean:
$(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc
+ libpng.pc pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -201,20 +205,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index 55976f6..3fe2117 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -1,5 +1,5 @@
# makefile for libpng on HP-UX using GCC with the HP ANSI/C linker.
-# Copyright (C) 2002, 2006-2008, 2010 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006-2008, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 2001, Laurent faillie
# Copyright (C) 1998, 1999 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
@@ -9,8 +9,8 @@
# and license in png.h
# Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).sl
@@ -27,7 +27,8 @@
RANLIB=ranlib
RM_F=/bin/rm -f
-# where "make install" puts libpng.a, $(OLDSO)*, png.h and pngconf.h
+# where "make install" puts libpng.a, $(OLDSO)*, png.h, pngconf.h
+# and pnglibconf.h
prefix=/usr/local
exec_prefix=$(prefix)
@@ -54,8 +55,8 @@
CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng14 -lz -lm
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng14 -lz -lm
+#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng15 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng15 -lz -lm
INCPATH=$(prefix)/include
LIBPATH=$(exec_prefix)/lib
@@ -99,13 +100,13 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
echo prefix=\"$(prefix)\"; \
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -123,12 +124,12 @@
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -202,7 +203,7 @@
clean:
$(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc
+ libpng.pc pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -210,20 +211,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index d26a600..650ab4f 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -1,5 +1,5 @@
# makefile for libpng, HPUX (10.20 and 11.00) using the ANSI/C product.
-# Copyright (C) 1999-2002, 2006, 2010 Glenn Randers-Pehrson
+# Copyright (C) 1999-2002, 2006, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42
# contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
#
@@ -19,8 +19,8 @@
# SHAREDLIB=libz.sl
# Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).sl
@@ -36,7 +36,7 @@
RANLIB=ranlib
RM_F=/bin/rm -f
-# where make install puts libpng.a, libpng14.sl, and png.h
+# where make install puts libpng.a, libpng15.sl, and png.h
prefix=/opt/libpng
exec_prefix=$(prefix)
INCPATH=$(prefix)/include
@@ -77,6 +77,10 @@
all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -86,7 +90,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -94,7 +98,7 @@
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -111,12 +115,12 @@
test: pngtest
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -190,7 +194,7 @@
clean:
$(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc
+ libpng.pc pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -198,20 +202,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.ibmc b/scripts/makefile.ibmc
index b0b445a..209d513 100644
--- a/scripts/makefile.ibmc
+++ b/scripts/makefile.ibmc
@@ -41,6 +41,10 @@
# Targets
all: libpng$(A) pngtest$(E)
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng$(A): $(OBJS)
$(AR) -out:$@ $(OBJS)
@@ -55,23 +59,24 @@
clean:
$(RM) *$(O)
$(RM) libpng$(A)
+ $(RM) pnglibconf.h
$(RM) pngtest$(E)
$(RM) pngout.png
-png$(O): png.h pngconf.h pngpriv.h
-pngerror$(O): png.h pngconf.h pngpriv.h
-pngget$(O): png.h pngconf.h pngpriv.h
-pngmem$(O): png.h pngconf.h pngpriv.h
-pngpread$(O): png.h pngconf.h pngpriv.h
-pngread$(O): png.h pngconf.h pngpriv.h
-pngrio$(O): png.h pngconf.h pngpriv.h
-pngrtran$(O): png.h pngconf.h pngpriv.h
-pngrutil$(O): png.h pngconf.h pngpriv.h
-pngset$(O): png.h pngconf.h pngpriv.h
-pngtrans$(O): png.h pngconf.h pngpriv.h
-pngwio$(O): png.h pngconf.h pngpriv.h
-pngwrite$(O): png.h pngconf.h pngpriv.h
-pngwtran$(O): png.h pngconf.h pngpriv.h
-pngwutil$(O): png.h pngconf.h pngpriv.h
+png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.intel b/scripts/makefile.intel
index fb705e1..1cb9ef3 100644
--- a/scripts/makefile.intel
+++ b/scripts/makefile.intel
@@ -44,49 +44,53 @@
all: test
-png$(O): png.h pngconf.h pngpriv.h
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
+png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngset$(O): png.h pngconf.h pngpriv.h
+pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngget$(O): png.h pngconf.h pngpriv.h
+pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngread$(O): png.h pngconf.h pngpriv.h
+pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngpread$(O): png.h pngconf.h pngpriv.h
+pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngrtran$(O): png.h pngconf.h pngpriv.h
+pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngrutil$(O): png.h pngconf.h pngpriv.h
+pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngerror$(O): png.h pngconf.h pngpriv.h
+pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngmem$(O): png.h pngconf.h pngpriv.h
+pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngrio$(O): png.h pngconf.h pngpriv.h
+pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngwio$(O): png.h pngconf.h pngpriv.h
+pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngtrans$(O): png.h pngconf.h pngpriv.h
+pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngwrite$(O): png.h pngconf.h pngpriv.h
+pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngwtran$(O): png.h pngconf.h pngpriv.h
+pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngwutil$(O): png.h pngconf.h pngpriv.h
+pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
libpng.lib: $(OBJS)
@@ -96,7 +100,7 @@
pngtest.exe: pngtest.obj libpng.lib
$(LD) $(LDFLAGS) /OUT:pngtest.exe pngtest.obj libpng.lib $(ZLIBLIB)\zlib.lib
-pngtest$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h pnglibconf.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
test: pngtest.exe
diff --git a/scripts/makefile.knr b/scripts/makefile.knr
index 75cb1b5..18a39f5 100644
--- a/scripts/makefile.knr
+++ b/scripts/makefile.knr
@@ -41,6 +41,10 @@
all: ansi2knr libpng.a pngtest
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
# general rule to allow ansi2knr to work
.c.o:
./ansi2knr $*.c T$*.c
@@ -61,7 +65,7 @@
test: pngtest
./pngtest
-install: libpng.a png.h pngconf.h
+install: libpng.a png.h pngconf.h pnglibconf.h
-@mkdir $(DESTDIR)$(INCPATH)
-@mkdir $(DESTDIR)$(INCPATH)/libpng
-@mkdir $(DESTDIR)$(LIBPATH)
@@ -69,14 +73,16 @@
-@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
cp png.h $(DESTDIR)$(INCPATH)/libpng
cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
+ cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
(cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
cp libpng.a $(DESTDIR)$(LIBPATH)
chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
clean:
- rm -f *.o libpng.a pngtest pngout.png ansi2knr
+ rm -f *.o libpng.a pngtest pngout.png ansi2knr pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -84,20 +90,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index 3ef6f8b..f1c75b6 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -1,5 +1,5 @@
-# makefile for libpng.a and libpng14.so on Linux ELF with gcc
-# Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010 Greg Roelofs and
+# makefile for libpng.a and libpng15.so on Linux ELF with gcc
+# Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010-2011 Greg Roelofs and
# Glenn Randers-Pehrson
# Copyright (C) 1996, 1997 Andreas Dilger
#
@@ -8,9 +8,9 @@
# and license in png.h
# Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
-RELEASE = 9
+LIBNAME = libpng15
+PNGMAJ = 15
+RELEASE = 10
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -26,8 +26,8 @@
RANLIB=ranlib
RM_F=/bin/rm -f
-# where "make install" puts libpng14.a, libpng14.so*,
-# libpng14/png.h and libpng14/pngconf.h
+# where "make install" puts libpng15.a, libpng15.so*,
+# libpng15/png.h, libpng15/pngconf.h, and libpng15/pnglibconf.h
# Prefix must be a full pathname.
prefix=/usr/local
exec_prefix=$(prefix)
@@ -51,7 +51,7 @@
CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops \
$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng15 -lz -lm
LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
INCPATH=$(prefix)/include
@@ -87,6 +87,10 @@
all: libpng.a $(LIBSO) pngtest pngtest-static libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -96,7 +100,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -104,7 +108,7 @@
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -130,12 +134,12 @@
@echo ""
./pngtest-static
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -208,7 +212,7 @@
clean:
$(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
$(LIBSO) $(LIBSOMAJ)* pngtest-static pngtesti \
- libpng.pc
+ libpng.pc pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -216,20 +220,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.mips b/scripts/makefile.mips
index 5e1040e..179d385 100644
--- a/scripts/makefile.mips
+++ b/scripts/makefile.mips
@@ -35,6 +35,10 @@
all: libpng.a pngtest
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
ar rc $@ $(OBJS)
$(RANLIB) $@
@@ -51,16 +55,19 @@
-@mkdir $(DESTDIR)$(LIBPATH)
-@rm -f $(DESTDIR)$(INCPATH)/png.h
-@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
+ -@rm -f $(DESTDIR)$(INCPATH)/pnglibconf.h
cp png.h $(DESTDIR)$(INCPATH)/libpng
cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
+ cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
(cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
cp libpng.a $(DESTDIR)$(LIBPATH)
chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
clean:
- rm -f *.o libpng.a pngtest pngout.png
+ rm -f *.o libpng.a pngtest pngout.png pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -68,20 +75,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.msc b/scripts/makefile.msc
index e744644..baa863d 100644
--- a/scripts/makefile.msc
+++ b/scripts/makefile.msc
@@ -27,49 +27,53 @@
all: libpng.lib
-png$(O): png.h pngconf.h pngpriv.h
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
+png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngset$(O): png.h pngconf.h pngpriv.h
+pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngget$(O): png.h pngconf.h pngpriv.h
+pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngread$(O): png.h pngconf.h pngpriv.h
+pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngpread$(O): png.h pngconf.h pngpriv.h
+pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngrtran$(O): png.h pngconf.h pngpriv.h
+pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngrutil$(O): png.h pngconf.h pngpriv.h
+pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngerror$(O): png.h pngconf.h pngpriv.h
+pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngmem$(O): png.h pngconf.h pngpriv.h
+pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngrio$(O): png.h pngconf.h pngpriv.h
+pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngwio$(O): png.h pngconf.h pngpriv.h
+pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngtrans$(O): png.h pngconf.h pngpriv.h
+pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngwrite$(O): png.h pngconf.h pngpriv.h
+pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngwtran$(O): png.h pngconf.h pngpriv.h
+pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngwutil$(O): png.h pngconf.h pngpriv.h
+pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
libpng.lib: $(OBJS1) $(OBJS2) $(OBJS3)
@@ -78,7 +82,7 @@
lib libpng $(OBJS2);
lib libpng $(OBJS3);
-pngtest$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h pnglibconf.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
pngtest.exe: pngtest.obj libpng.lib
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index 42c918b..dfa5b3f 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -13,15 +13,15 @@
LOCALBASE?=/usr/local
LIBDIR= ${LOCALBASE}/lib
MANDIR= ${LOCALBASE}/man
-INCSDIR=${LOCALBASE}/include/libpng14
+INCSDIR=${LOCALBASE}/include/libpng15
-LIB= png14
+LIB= png15
SHLIB_MAJOR= 0
-SHLIB_MINOR= 1.4.9beta01
+SHLIB_MINOR= 1.5.10beta01
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c
-INCS= png.h pngconf.h
+INCS= png.h pngconf.h pnglibconf.h
MAN= libpng.3 libpngpf.3 png.5
CPPFLAGS+=-I${.CURDIR}
@@ -32,7 +32,11 @@
# MKLINT= no
# .endif
-CLEANFILES+=pngtest.o pngtest
+CLEANFILES+=pngtest.o pngtest pnglibconf.h
+
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
pngtest.o: pngtest.c
${CC} -c ${CPPFLAGS} ${CFLAGS} ${.ALLSRC} -o ${.TARGET}
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index d47b15f..c34e1d3 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -8,7 +8,7 @@
# For conditions of distribution and use, see the disclaimer
# and license in png.h
-# You should also run makefile.ne14bsd
+# You should also run makefile.ne15bsd
LOCALBASE?=/usr/local
LIBDIR= ${LOCALBASE}/lib
@@ -16,12 +16,12 @@
INCSDIR=${LOCALBASE}/include
LIB= png
-SHLIB_MAJOR= 3
-SHLIB_MINOR= 1.4.9beta01
+SHLIB_MAJOR= 15
+SHLIB_MINOR= 1.5.10beta01
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c
-INCS= png.h pngconf.h
+INCS= png.h pngconf.h pnglibconf.h
MAN= libpng.3 libpngpf.3 png.5
CPPFLAGS+=-I${.CURDIR}
@@ -32,7 +32,11 @@
# MKLINT= no
# .endif
-CLEANFILES+=pngtest.o pngtest
+CLEANFILES+=pngtest.o pngtest pnglibconf.h
+
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
pngtest.o: pngtest.c
${CC} -c ${CPPFLAGS} ${CFLAGS} ${.ALLSRC} -o ${.TARGET}
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index 8e5ec56..44a3062 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -10,25 +10,30 @@
LIBDIR= ${PREFIX}/lib
MANDIR= ${PREFIX}/man/cat
-SHLIB_MAJOR= 0
-SHLIB_MINOR= 1.4.9beta01
+SHLIB_MAJOR= 15
+SHLIB_MINOR= 1.5.10beta01
LIB= png
SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \
pngread.c pngrio.c pngrtran.c pngrutil.c pngset.c pngtrans.c \
pngwio.c pngwrite.c pngwtran.c pngwutil.c
-HDRS= png.h pngconf.h
+HDRS= png.h pngconf.h pnglibconf.h
CFLAGS+= -W -Wall
CPPFLAGS+= -I${.CURDIR}
NOPROFILE= Yes
-CLEANFILES+= pngtest.o pngtest
+CLEANFILES+= pngtest.o pngtest pnglibconf.h
MAN= libpng.3 libpngpf.3 png.5
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO libpng.txt
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO \
+ libpng-manual.txt
+
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
pngtest.o: pngtest.c
${CC} ${CPPFLAGS} ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
@@ -65,6 +70,7 @@
@rm -f ${DESTDIR}${LIBDIR}/debug/libpng.a
@rm -f ${DESTDIR}${PREFIX}/include/png.h
@rm -f ${DESTDIR}${PREFIX}/include/pngconf.h
+ @rm -f ${DESTDIR}${PREFIX}/include/pnglibconf.h
@rmdir ${DESTDIR}${LIBDIR}/debug 2>/dev/null || true
${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} \
-m ${NONBINMODE} ${HDRS} ${DESTDIR}${PREFIX}/include
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index 1dcb7d9..0aad789 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -1,7 +1,7 @@
# makefile for SCO OSr5 ELF and Unixware 7 with Native cc
# Contributed by Mike Hopkirk (hops@sco.com) modified from Makefile.lnx
# force ELF build dynamic linking, SONAME setting in lib and RPATH in app
-# Copyright (C) 2002, 2006, 2010 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1998 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
#
@@ -10,8 +10,8 @@
# and license in png.h
# Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -38,7 +38,7 @@
ZLIBINC=../zlib
CFLAGS= -dy -belf -I$(ZLIBINC) -O3
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng15 -lz -lm
INCPATH=$(prefix)/include
LIBPATH=$(exec_prefix)/lib
@@ -73,6 +73,10 @@
all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -82,7 +86,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -90,7 +94,7 @@
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
echo ccopts=\"-belf\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -107,14 +111,15 @@
test: pngtest
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
-@$(RM_F) $(DI)/png.h
-@$(RM_F) $(DI)/pngconf.h
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/pnglibconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -186,7 +191,7 @@
clean:
$(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
$(LIBSO) $(LIBSOMAJ)* pngtest-static pngtesti \
- libpng.pc
+ pnglibconf.h libpng.pc
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -194,20 +199,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index 2a49fb9..1611638 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -1,5 +1,5 @@
-# makefile for libpng.a and libpng14.so, SGI IRIX with 'cc'
-# Copyright (C) 2001-2002, 2006, 2010 Glenn Randers-Pehrson
+# makefile for libpng.a and libpng15.so, SGI IRIX with 'cc'
+# Copyright (C) 2001-2002, 2006, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
@@ -7,8 +7,8 @@
# and license in png.h
# Library name:
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -24,7 +24,7 @@
RANLIB=echo
RM_F=/bin/rm -f
-# Where make install puts libpng.a, libpng14.so, and libpng14/png.h
+# Where make install puts libpng.a, libpng15.so, and libpng15/png.h
# Prefix must be a full pathname.
prefix=/usr/local
@@ -46,7 +46,7 @@
CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -fPIC -mabi=n32
LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
- -set_version sgi$(PNGMAJ).0
+ -set_version sgi$(PNGMAJ).0
# See "man dso" for info about shared objects
INCPATH=$(prefix)/include
@@ -76,6 +76,10 @@
all: libpng.a pngtest shared libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -87,7 +91,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -98,7 +102,7 @@
echo ldopts=\"$(ABI)\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
echo libdir=\"$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -117,12 +121,12 @@
echo Testing local static library.
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -181,7 +185,7 @@
$(CC) -I$(DI) -I$(ZLIBINC) \
`$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
-L$(DL) -L$(ZLIBLIB) \
- -rpath $(ZLIBLIB):$(DL) \
+ -rpath $(ZLIBLIB):$(DL) \
-o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
./pngtestd pngtest.png
@@ -191,13 +195,13 @@
$(CC) -I$(ZLIBINC) \
`$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
-L$(ZLIBLIB) \
- -rpath $(ZLIBLIB):`$(BINPATH)/$(LIBNAME)-config --libdir` \
+ -rpath $(ZLIBLIB):`$(BINPATH)/$(LIBNAME)-config --libdir` \
-o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
./pngtesti pngtest.png
clean:
$(RM_F) libpng.a pngtest pngtesti pngout.png libpng.pc \
- so_locations libpng-config $(LIBSO) $(LIBSOMAJ)*
+ so_locations libpng-config $(LIBSO) $(LIBSOMAJ)* pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -205,20 +209,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index 0c381da..83db59f 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -1,5 +1,5 @@
-# makefile for libpng.a and libpng14.so, SGI IRIX with 'cc'
-# Copyright (C) 2001-2002, 2006, 2007, 2010 Glenn Randers-Pehrson
+# makefile for libpng.a and libpng15.so, SGI IRIX with 'cc'
+# Copyright (C) 2001-2002, 2006, 2007, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
@@ -7,8 +7,8 @@
# and license in png.h
# Library name:
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -24,7 +24,7 @@
RANLIB=echo
RM_F=/bin/rm -f
-# Where make install puts libpng.a, libpng14.so, and libpng14/png.h
+# Where make install puts libpng.a, libpng15.so, and libpng15/png.h
# Prefix must be a full pathname.
prefix=/usr/local
@@ -46,10 +46,10 @@
# Note: -KPIC is the default anyhow
#CFLAGS= $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -KPIC # -g -DPNG_DEBUG=5
CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE)
-LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng15 -lz -lm
LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
- -set_version sgi$(PNGMAJ).0
+ -set_version sgi$(PNGMAJ).0
# See "man dso" for info about shared objects
INCPATH=$(prefix)/include
@@ -79,6 +79,10 @@
all: libpng.a pngtest shared libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -88,7 +92,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -98,7 +102,7 @@
echo ldopts=\"$(ABI)\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
echo libdir=\"$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -117,12 +121,12 @@
echo Testing local static library.
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -181,7 +185,7 @@
$(CC) -I$(DI) -I$(ZLIBINC) \
`$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
-L$(DL) -L$(ZLIBLIB) \
- -rpath $(ZLIBLIB):$(DL) \
+ -rpath $(ZLIBLIB):$(DL) \
-o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
./pngtestd pngtest.png
@@ -191,14 +195,14 @@
$(CC) -I$(ZLIBINC) \
`$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
-L$(ZLIBLIB) \
- -rpath $(ZLIBLIB):`$(BINPATH)/$(LIBNAME)-config --libdir` \
+ -rpath $(ZLIBLIB):`$(BINPATH)/$(LIBNAME)-config --libdir` \
-o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
./pngtesti pngtest.png
clean:
$(RM_F) *.o libpng.a pngtest pngtesti pngout.png libpng.pc libpng-config \
$(LIBSO) $(LIBSOMAJ)* \
- so_locations
+ so_locations pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -206,20 +210,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.so9 b/scripts/makefile.so9
index fd52e3d..615c2e3 100644
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -1,7 +1,7 @@
# makefile for libpng on Solaris 9 (beta) with Forte cc
# Updated by Chad Schrock for Solaris 9
# Contributed by William L. Sebok, based on makefile.linux
-# Copyright (C) 2002, 2006, 2008, 2010 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006, 2008, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1998-2001 Greg Roelofs
# Copyright (C) 1996-1997 Andreas Dilger
#
@@ -10,8 +10,8 @@
# and license in png.h
# Library name:
-PNGMAJ = 14
-LIBNAME = libpng14
+PNGMAJ = 15
+LIBNAME = libpng15
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -48,7 +48,7 @@
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
#CFLAGS=-I$(ZLIBINC) -W -Wall -O3 $(WARNMORE) -g -DPNG_DEBUG=5 -DPNG_NO_MMX_CODE
CFLAGS=-I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng15 -lz -lm
INCPATH=$(prefix)/include
LIBPATH=$(exec_prefix)/lib
@@ -83,6 +83,10 @@
all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -92,7 +96,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -100,7 +104,7 @@
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
echo R_opts=\"-R$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -129,12 +133,12 @@
test: pngtest
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -208,7 +212,7 @@
clean:
$(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc
+ libpng.pc pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -216,20 +220,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index fe9405e..24bd610 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -1,5 +1,5 @@
# makefile for libpng on Solaris 2.x with gcc
-# Copyright (C) 2004, 2006-2008, 2010 Glenn Randers-Pehrson
+# Copyright (C) 2004, 2006-2008, 2010-2011 Glenn Randers-Pehrson
# Contributed by William L. Sebok, based on makefile.linux
# Copyright (C) 1998 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
@@ -9,8 +9,8 @@
# and license in png.h
# Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -26,7 +26,7 @@
RANLIB=echo
RM_F=/bin/rm -f
-# Where make install puts libpng.a, libpng14.so*, and png.h
+# Where make install puts libpng.a, libpng15.so*, and png.h
prefix=/usr/local
exec_prefix=$(prefix)
@@ -44,7 +44,7 @@
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
CFLAGS=-I$(ZLIBINC) -W -Wall -O \
# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng15 -lz -lm
INCPATH=$(prefix)/include
LIBPATH=$(exec_prefix)/lib
@@ -79,6 +79,10 @@
all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -88,7 +92,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -97,7 +101,7 @@
echo cppflags=\"\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
echo R_opts=\"-R$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -126,12 +130,12 @@
test: pngtest
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -205,7 +209,7 @@
clean:
$(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc
+ libpng.pc pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -213,20 +217,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.solaris-x86 b/scripts/makefile.solaris-x86
index e98b292..7646762 100644
--- a/scripts/makefile.solaris-x86
+++ b/scripts/makefile.solaris-x86
@@ -1,5 +1,5 @@
# makefile for libpng on Solaris 2.x with gcc
-# Copyright (C) 2004, 2006-2008, 2010 Glenn Randers-Pehrson
+# Copyright (C) 2004, 2006-2008, 2010-2011 Glenn Randers-Pehrson
# Contributed by William L. Sebok, based on makefile.linux
# Copyright (C) 1998 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
@@ -9,8 +9,8 @@
# and license in png.h
# Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15
# Shared library names:
LIBSO=$(LIBNAME).so
@@ -26,7 +26,7 @@
RANLIB=echo
RM_F=/bin/rm -f
-# Where make install puts libpng.a, libpng14.so*, and png.h
+# Where make install puts libpng.a, libpng15.so*, and png.h
prefix=/usr/local
exec_prefix=$(prefix)
@@ -44,7 +44,7 @@
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
CFLAGS=-I$(ZLIBINC) -W -Wall -O \
# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng15 -lz -lm
INCPATH=$(prefix)/include
LIBPATH=$(exec_prefix)/lib
@@ -79,6 +79,10 @@
all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -88,7 +92,7 @@
-e s!@exec_prefix@!$(exec_prefix)! \
-e s!@libdir@!$(LIBPATH)! \
-e s!@includedir@!$(INCPATH)! \
- -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+ -e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
@@ -97,7 +101,7 @@
echo cppflags=\""; \
echo L_opts=\"-L$(LIBPATH)\"; \
echo R_opts=\"-R$(LIBPATH)\"; \
- echo libs=\"-lpng14 -lz -lm\"; \
+ echo libs=\"-lpng15 -lz -lm\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
@@ -126,12 +130,12 @@
test: pngtest
./pngtest
-install-headers: png.h pngconf.h
+install-headers: png.h pngconf.h pnglibconf.h
-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-@$(RM_F) $(DI)/libpng
(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
@@ -205,7 +209,7 @@
clean:
$(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc
+ libpng.pc pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -213,20 +217,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.std b/scripts/makefile.std
index afb885a..a04dbb8 100644
--- a/scripts/makefile.std
+++ b/scripts/makefile.std
@@ -33,7 +33,12 @@
LN_SF=ln -sf
RANLIB=ranlib
RM_F=rm -f
+AWK = awk
+SED = sed
+CPP = $(CC) -E
+ECHO = echo
+DFNFLAGS = # DFNFLAGS contains -D options to use in the libpng build
CFLAGS=-I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
@@ -43,6 +48,26 @@
all: libpng.a pngtest
+# The standard pnglibconf.h exists as scripts/pnglibconf.h.prebuilt,
+# copy this if the following doesn't work.
+pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
+ $(RM_F) $@ dfn?.out
+ $(AWK) -f scripts/options.awk out=dfn1.out version=search pngconf.h\
+ scripts/pnglibconf.dfa $(DFA_XTRA) 1>&2
+ $(AWK) -f scripts/options.awk out=dfn2.out dfn1.out 1>&2
+ cp dfn2.out $@
+ $(RM_F) dfn?.out
+
+pnglibconf.h: pnglibconf.dfn
+ $(RM_F) $@ dfn.c dfn?.out
+ $(ECHO) '#include "pnglibconf.dfn"' >dfn.c
+ $(CPP) $(DFNFLAGS) dfn.c >dfn1.out
+ $(SED) -n -e 's|^.*PNG_DEFN_MAGIC *-\(.*\)- *PNG_DEFN_END.*$$|\1|p'\
+ dfn1.out >dfn2.out
+ $(SED) -e 's| *PNG_JOIN *||g' -e 's| *$$||' dfn2.out >dfn3.out
+ cp dfn3.out $@
+ $(RM_F) dfn.c dfn?.out
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -53,22 +78,25 @@
test: pngtest
./pngtest
-install: libpng.a
+install: libpng.a pnglibconf.h
-@$(MKDIR_P) $(DESTDIR)$(INCPATH)
-@$(MKDIR_P) $(DESTDIR)$(INCPATH)/libpng
-@$(MKDIR_P) $(DESTDIR)$(LIBPATH)
-@$(RM_F) $(DESTDIR)$(INCPATH)/png.h
-@$(RM_F) $(DESTDIR)$(INCPATH)/pngconf.h
+ -@$(RM_F) $(DESTDIR)$(INCPATH)/pnglibconf.h
cp png.h $(DESTDIR)$(INCPATH)/libpng
cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
+ cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
(cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
cp libpng.a $(DESTDIR)$(LIBPATH)
chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
clean:
- $(RM_F) *.o libpng.a pngtest pngout.png
+ $(RM_F) *.o libpng.a pngtest pngout.png pnglibconf.* dfn.c dfn?.out
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -76,20 +104,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.sunos b/scripts/makefile.sunos
index 984379c..3839549 100644
--- a/scripts/makefile.sunos
+++ b/scripts/makefile.sunos
@@ -48,6 +48,10 @@
all: libpng.a pngtest
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
@@ -64,16 +68,19 @@
-@$(MKDIR_P) $(DESTDIR)$(LIBPATH)
-@$(RM_F) $(DESTDIR)$(INCPATH)/png.h
-@$(RM_F) $(DESTDIR)$(INCPATH)/pngconf.h
+ -@$(RM_F) $(DESTDIR)$(INCPATH)/pnglibconf.h
cp png.h $(DESTDIR)$(INCPATH)/libpng
cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
+ cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
(cd $(DESTDIR)$(INCPATH); $(LN_SF) libpng/* .)
cp libpng.a $(DESTDIR)$(LIBPATH)
chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
clean:
- $(RM_F) *.o libpng.a pngtest pngout.png
+ $(RM_F) *.o libpng.a pngtest pngout.png pnglibconf.h
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -81,20 +88,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.tc3 b/scripts/makefile.tc3
index bf6ade6..462c47f 100644
--- a/scripts/makefile.tc3
+++ b/scripts/makefile.tc3
@@ -25,57 +25,61 @@
all: libpng$(MODEL).lib pngtest$(E)
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+ cp scripts/pnglibconf.h.prebuilt $@
+
pngtest: pngtest$(E)
test: pngtest$(E)
pngtest$(E)
-png$(O): png.h pngconf.h pngpriv.h
+png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngset$(O): png.h pngconf.h pngpriv.h
+pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngget$(O): png.h pngconf.h pngpriv.h
+pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngread$(O): png.h pngconf.h pngpriv.h
+pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngpread$(O): png.h pngconf.h pngpriv.h
+pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngrtran$(O): png.h pngconf.h pngpriv.h
+pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngrutil$(O): png.h pngconf.h pngpriv.h
+pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngerror$(O): png.h pngconf.h pngpriv.h
+pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngmem$(O): png.h pngconf.h pngpriv.h
+pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngrio$(O): png.h pngconf.h pngpriv.h
+pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngwio$(O): png.h pngconf.h pngpriv.h
+pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngtest$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h pnglibconf.h
$(CC) -c $(CFLAGS) $*.c
-pngtrans$(O): png.h pngconf.h pngpriv.h
+pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngwrite$(O): png.h pngconf.h pngpriv.h
+pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngwtran$(O): png.h pngconf.h pngpriv.h
+pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
-pngwutil$(O): png.h pngconf.h pngpriv.h
+pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c
libpng$(MODEL).lib: $(OBJS1) $(OBJS2) $(OBJS3)
diff --git a/scripts/makefile.vcwin32 b/scripts/makefile.vcwin32
index a23c075..6bfeac0 100644
--- a/scripts/makefile.vcwin32
+++ b/scripts/makefile.vcwin32
@@ -1,6 +1,6 @@
# makefile for libpng
# Copyright (C) 1998 Tim Wegner
-# Copyright (C) 2006,2009 Glenn Randers-Pehrson
+# Copyright (C) 2006,2009,2011 Glenn Randers-Pehrson
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
@@ -35,56 +35,60 @@
# Targets
all: libpng.lib
-png$(O): png.h pngconf.h pngpriv.h
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts\pnglibconf.h.prebuilt
+ copy scripts\pnglibconf.h.prebuilt $@
+
+png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngset$(O): png.h pngconf.h pngpriv.h
+pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngget$(O): png.h pngconf.h pngpriv.h
+pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngread$(O): png.h pngconf.h pngpriv.h
+pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngpread$(O): png.h pngconf.h pngpriv.h
+pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngrtran$(O): png.h pngconf.h pngpriv.h
+pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngrutil$(O): png.h pngconf.h pngpriv.h
+pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngerror$(O): png.h pngconf.h pngpriv.h
+pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngmem$(O): png.h pngconf.h pngpriv.h
+pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngrio$(O): png.h pngconf.h pngpriv.h
+pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngwio$(O): png.h pngconf.h pngpriv.h
+pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngtrans$(O): png.h pngconf.h pngpriv.h
+pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngwrite$(O): png.h pngconf.h pngpriv.h
+pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngwtran$(O): png.h pngconf.h pngpriv.h
+pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngwutil$(O): png.h pngconf.h pngpriv.h
+pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
libpng.lib: $(OBJS)
-$(RM) $@
$(AR) $(ARFLAGS) -out:$@ $(OBJS) $(ERRFILE)
-pngtest$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h pnglibconf.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
pngtest.exe: pngtest$(O) libpng.lib
@@ -96,6 +100,7 @@
clean:
-$(RM) *$(O)
-$(RM) libpng.lib
+ -$(RM) pnglibconf.h
-$(RM) pngtest.exe
-$(RM) pngout.png
diff --git a/scripts/makevms.com b/scripts/makevms.com
index 2fa9d0d..f6c3261 100644
--- a/scripts/makevms.com
+++ b/scripts/makevms.com
@@ -54,40 +54,40 @@
$ then
$ dele pngtest.obj;*
$ CALL MAKE png.OBJ "cc ''CCOPT' png" -
- png.c png.h pngconf.h pngpriv.h
+ png.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngset.OBJ "cc ''CCOPT' pngset" -
- pngset.c png.h pngconf.h pngpriv.h
+ pngset.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngget.OBJ "cc ''CCOPT' pngget" -
- pngget.c png.h pngconf.h pngpriv.h
+ pngget.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngread.OBJ "cc ''CCOPT' pngread" -
- pngread.c png.h pngconf.h pngpriv.h
+ pngread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngpread.OBJ "cc ''CCOPT' pngpread" -
- pngpread.c png.h pngconf.h pngpriv.h
+ pngpread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngrtran.OBJ "cc ''CCOPT' pngrtran" -
- pngrtran.c png.h pngconf.h pngpriv.h
+ pngrtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngrutil.OBJ "cc ''CCOPT' pngrutil" -
- pngrutil.c png.h pngconf.h pngpriv.h
+ pngrutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngerror.OBJ "cc ''CCOPT' pngerror" -
- pngerror.c png.h pngconf.h pngpriv.h
+ pngerror.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngmem.OBJ "cc ''CCOPT' pngmem" -
- pngmem.c png.h pngconf.h pngpriv.h
+ pngmem.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngrio.OBJ "cc ''CCOPT' pngrio" -
- pngrio.c png.h pngconf.h pngpriv.h
+ pngrio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngwio.OBJ "cc ''CCOPT' pngwio" -
- pngwio.c png.h pngconf.h pngpriv.h
+ pngwio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngtrans.OBJ "cc ''CCOPT' pngtrans" -
- pngtrans.c png.h pngconf.h pngpriv.h
+ pngtrans.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngwrite.OBJ "cc ''CCOPT' pngwrite" -
- pngwrite.c png.h pngconf.h pngpriv.h
+ pngwrite.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngwtran.OBJ "cc ''CCOPT' pngwtran" -
- pngwtran.c png.h pngconf.h pngpriv.h
+ pngwtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ CALL MAKE pngwutil.OBJ "cc ''CCOPT' pngwutil" -
- pngwutil.c png.h pngconf.h pngpriv.h
+ pngwutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
$ write sys$output "Building Libpng ..."
$ CALL MAKE libpng.OLB "lib/crea libpng.olb *.obj" *.OBJ
$ write sys$output "Building pngtest..."
$ CALL MAKE pngtest.OBJ "cc ''CCOPT' pngtest" -
- pngtest.c png.h pngconf.h
+ pngtest.c png.h pngconf.h pnglibconf.h
$ call make pngtest.exe -
"LINK pngtest,libpng.olb/lib,''zlibsrc'libz.olb/lib" -
pngtest.obj libpng.olb
diff --git a/scripts/options.awk b/scripts/options.awk
new file mode 100755
index 0000000..a8dff04
--- /dev/null
+++ b/scripts/options.awk
@@ -0,0 +1,777 @@
+#!/bin/awk -f
+# scripts/options.awk - library build configuration control
+#
+# last changed in libpng version 1.5.7 - December 15, 2011
+#
+# Copyright (c) 1998-2011 Glenn Randers-Pehrson
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# The output of this script is written to the file given by
+# the variable 'out'. The script is run twice, once with
+# an intermediate output file, 'options.tmp' then again on
+# that file to produce the final output:
+#
+# awk -f scripts/options.awk out=options.tmp scripts/options.dfa 1>&2
+# awk -f scripts/options.awk out=options.dfn options.tmp 1>&2
+#
+# Some options may be specified on the command line:
+#
+# deb=1 Causes debugging to be output
+# logunsupported=1 Causes all options to be recorded in the output
+# everything=off Causes all options to be disabled by default
+# everything=on Causes all options to be enabled by default
+#
+# If awk fails on your platform, try nawk instead.
+#
+# These options may also be specified in the original input file (and
+# are copied to the preprocessed file).
+
+BEGIN{
+ out="/dev/null" # intermediate, preprocessed, file
+ pre=-1 # preprocess (first line)
+ version="libpng version unknown" # version information
+ version_file="" # where to find the version
+ err=0 # in-line exit sets this
+ start="PNG_DEFN_MAGIC-" # Arbitrary start
+ end="-PNG_DEFN_END" # Arbitrary end
+ ct="PNG_JOIN" # Join two tokens
+ cx= "/" ct "*" # Open C comment for output file
+ comment=start cx # Comment start
+ cend="*/" end # Comment end
+ def=start "#define PNG_" ct # Arbitrary define
+ sup=ct "_SUPPORTED" end # end supported option
+ und=comment "#undef PNG_" ct # Unsupported option
+ une=ct "_SUPPORTED" cend # end unsupported option
+ error=start "ERROR:" # error message
+
+ # Variables
+ deb=0 # debug - set on command line
+ everything="" # do not override defaults
+ logunsupported=0 # write unsupported options too
+
+ # Precreate arrays
+ option[""] = "" # list of all options: default enabled/disabled
+ done[""] = 1 # marks option as having been output
+ requires[""] = "" # requires by option
+ iffs[""] = "" # if by option
+ enabledby[""] = "" # options that enable it by option
+ setting[""] = "" # requires by setting
+ defaults[""] = "" # used for a defaulted value
+ doneset[""] = 1 # marks setting as having been output
+ r[""] = "" # Temporary array
+
+ # For decorating the output file
+ protect = ""
+}
+
+# The output file must be specified before any input:
+out == "/dev/null" {
+ print "out=output.file must be given on the command line"
+ err = 1
+ exit 1
+}
+
+# The very first line indicates whether we are reading pre-processed
+# input or not, this must come *first* because 'PREPROCESSED' needs
+# to be the very first line in the temporary file.
+pre == -1{
+ if ($0 == "PREPROCESSED") {
+ pre = 0
+ next
+ } else {
+ pre = 1
+ print "PREPROCESSED" >out
+ # And fall through to continue processing
+ }
+}
+
+# While pre-processing if version is set to "search" look for a version string
+# in the following file.
+pre && version == "search" && version_file == ""{
+ version_file = FILENAME
+}
+
+pre && version == "search" && version_file != FILENAME{
+ print "version string not found in", version_file
+ err = 1
+ exit 1
+}
+
+pre && version == "search" && $0 ~ /^ \* libpng version/{
+ version = substr($0, 4)
+ print "version =", version >out
+ next
+}
+
+pre && FILENAME == version_file{
+ next
+}
+
+# variable=value
+# Sets the given variable to the given value (the syntax is fairly
+# free form, except for deb (you are expected to understand how to
+# set the debug variable...)
+#
+# This happens before the check on 'pre' below skips most of the
+# rest of the actions, so the variable settings happen during
+# preprocessing but are recorded in the END action too. This
+# allows them to be set on the command line too.
+$0 ~ /^[ ]*version[ ]*=/{
+ sub(/^[ ]*version[ ]*=[ ]*/, "")
+ version = $0
+ next
+}
+$0 ~ /^[ ]*everything[ =]*off[ ]*$/{
+ everything = "off"
+ next
+}
+$0 ~ /^[ ]*everything[ =]*on[ ]*$/{
+ everything = "on"
+ next
+}
+$0 ~ /^[ ]*logunsupported[ =]*0[ ]*$/{
+ logunsupported = 0
+ next
+}
+$0 ~ /^[ ]*logunsupported[ =]*1[ ]*$/{
+ logunsupported = 1
+ next
+}
+$1 == "deb" && $2 == "=" && NF == 3{
+ deb = $3
+ next
+}
+
+# Preprocessing - this just copies the input file with lines
+# that need preprocessing (just chunk at present) expanded
+# The bare "pre" instead of "pre != 0" crashes under Sunos awk
+pre && $1 != "chunk"{
+ print >out
+ next
+}
+
+# The first characters of the line determine how it is processed,
+# leading spaces are ignored. In general tokens that are not
+# keywords are the names of options. An option 'name' is
+# controlled by the definition of the corresponding macros:
+#
+# PNG_name_SUPPORTED The option is turned on
+# PNG_NO_name
+# PNG_NO_name_SUPPORTED If the first macro is not defined
+# either of these will turn the option off
+#
+# If none of these macros are defined the option is turned on, unless
+# the keyword 'off' is given in a line relating to the option. The
+# keyword 'on' can also be given, but it will be ignored (since it is
+# the default.)
+#
+# In the syntax below a 'name' is indicated by "NAME", other macro
+# values are indicated by "MACRO", as with "NAME" the leading "PNG_"
+# is omitted, but in this case the "NO_" prefix and the "_SUPPORTED"
+# suffix are never used.
+#
+# Each line is introduced by a keyword - the first non-space characters
+# on the line. A line starting with a '#' is a comment - it is totally
+# ignored. Keywords are as follows, a NAME, is simply a macro name
+# without the leading PNG_, PNG_NO_ or the trailing _SUPPORTED.
+
+$1 ~ /^#/ || $0 ~ /^[ ]*$/{
+ next
+}
+
+# com <comment>
+# The whole line is placed in the output file as a comment with
+# the preceding 'com' removed
+$1 == "com"{
+ if (NF > 1) {
+ # sub(/^[ ]*com[ ]*/, "")
+ $1 = ""
+ print comment, $0, cend >out
+ } else
+ print start end >out
+ next
+}
+
+# version
+# Inserts a version comment
+$1 == "version" && NF == 1{
+ if (version == "") {
+ print "ERROR: no version string set"
+ err = 1 # prevent END{} running
+ exit 1
+ }
+
+ print comment, version, cend >out
+ next
+}
+
+# file output input protect
+# Informational: the official name of the input file (without
+# make generated local directories), the official name of the
+# output file and, if required, a name to use in a protection
+# macro for the contents.
+$1 == "file" && NF >= 2{
+ print comment, $2, cend >out
+ print comment, "Machine generated file: DO NOT EDIT", cend >out
+ if (NF >= 3)
+ print comment, "Derived from:", $3, cend >out
+ protect = $4
+ if (protect != "") {
+ print start "#ifndef", protect end >out
+ print start "#define", protect end >out
+ }
+ next
+}
+
+# option NAME ( (requires|enables|if) NAME* | on | off | disabled )*
+# Declares an option 'NAME' and describes its default setting (disabled)
+# and its relationship to other options. The option is disabled
+# unless *all* the options listed after 'requires' are set and at
+# least one of the options listed after 'if' is set. If the
+# option is set then it turns on all the options listed after 'enables'.
+#
+# Note that "enables" takes priority over the required/if/disabled/off
+# setting of the target option.
+#
+# The definition file may list an option as 'disabled': off by default,
+# otherwise the option is enabled: on by default. A later (and it must
+# be later) entry may turn an option on or off explicitly.
+
+$1 == "option" && NF >= 2{
+ onoff = option[$2] # records current (and the default is "", enabled)
+ key = ""
+ for (i=3; i<=NF; ++i) {
+ if ($(i) == "on" || $(i) == "off" || $(i) == "disabled") {
+ key = ""
+ if (onoff != $(i)) {
+ # on or off can zap disabled or enabled:
+ if (onoff == "" || (onoff == "disabled" || onoff == "enabled") && ($(i) == "on" || $(i) == "off")) {
+ # It's easy to mis-spell the option when turning it
+ # on or off, so warn about it here:
+ if (onoff == "" && ($(i) == "on" || $(i) == "off")) {
+ print $2 ": ERROR: turning unrecognized option", $(i)
+ # For the moment error out - it is safer
+ err = 1 # prevent END{} running
+ exit 1
+ }
+ onoff = $(i)
+ } else {
+ # Print a message, otherwise the error
+ # below is incomprehensible
+ print $2 ": currently", onoff ": attempt to turn", $(i)
+ break
+ }
+ }
+ } else if ($(i) == "requires" || $(i) == "if" || $(i) == "enables") {
+ key = $(i)
+ } else if (key == "requires") {
+ requires[$2] = requires[$2] " " $(i)
+ } else if (key == "if") {
+ iffs[$2] = iffs[$2] " " $(i)
+ } else if (key == "enables") {
+ enabledby[$(i)] = enabledby[$(i)] " " $2
+ } else
+ break # bad line format
+ }
+
+ if (i > NF) {
+ # Set the option, defaulting to 'enabled'
+ if (onoff == "") onoff = "enabled"
+ option[$2] = onoff
+ next
+ }
+ # Else fall through to the error handler
+}
+
+# chunk NAME [requires OPT] [on|off|disabled]
+# Expands to the 'option' settings appropriate to the reading and
+# writing of an ancilliary PNG chunk 'NAME':
+#
+# option READ_NAME requires READ_ANCILLARY_CHUNKS [READ_OPT]
+# option READ_NAME enables NAME
+# [option READ_NAME off]
+# option WRITE_NAME requires WRITE_ANCILLARY_CHUNKS [WRITE_OPT]
+# option WRITE_NAME enables NAME
+# [option WRITE_NAME off]
+
+pre != 0 && $1 == "chunk" && NF >= 2{
+ # 'chunk' is handled on the first pass by writing appropriate
+ # 'option' lines into the intermediate file.
+ onoff = ""
+ reqread = ""
+ reqwrite = ""
+ i = 3 # indicates format error
+ if (NF > 2) {
+ # read the keywords/additional OPTS
+ req = 0
+ for (i=3; i<=NF; ++i) {
+ if ($(i) == "on" || $(i) == "off" || $(i) == "disabled") {
+ if (onoff != $(i)) {
+ if (onoff == "")
+ onoff = $(i)
+ else
+ break # on/off conflict
+ }
+ } else if ($(i) == "requires")
+ req = 1
+ else if (req != 1)
+ break # bad line: handled below
+ else {
+ reqread = reqread " READ_" $(i)
+ reqwrite = reqwrite " WRITE_" $(i)
+ }
+ }
+ }
+
+ if (i > NF) {
+ # Output new 'option' lines to the intermediate file (out)
+ print "option READ_" $2, "requires READ_ANCILLARY_CHUNKS" reqread, "enables", $2, onoff >out
+ print "option WRITE_" $2, "requires WRITE_ANCILLARY_CHUNKS" reqwrite, "enables", $2, onoff >out
+ next
+ }
+ # Else hit the error handler below - bad line format!
+}
+
+# setting MACRO ( requires MACRO* )* [ default VALUE ]
+# Behaves in a similar way to 'option' without looking for NO_ or
+# _SUPPORTED; the macro is enabled if it is defined so long as all
+# the 'requires' macros are also defined. The definitions may be
+# empty, an error will be issued if the 'requires' macros are
+# *not* defined. If given the 'default' value is used if the
+# macro is not defined. The default value will be re-tokenised.
+# (BTW: this is somewhat restrictive, it mainly exists for the
+# support of non-standard configurations and numeric parameters,
+# see the uses in scripts/options.dat
+
+$1 == "setting" && (NF == 2 || NF >= 3 && ($3 == "requires" || $3 == "default")){
+ reqs = ""
+ deflt = ""
+ isdef = 0
+ key = ""
+ for (i=3; i<=NF; ++i)
+ if ($(i) == "requires" || $(i) == "default") {
+ key = $(i)
+ if (key == "default") isdef = 1
+ } else if (key == "requires")
+ reqs = reqs " " $(i)
+ else if (key == "default")
+ deflt = deflt " " $(i)
+ else
+ break # Format error, handled below
+
+ setting[$2] = reqs
+ # NOTE: this overwrites a previous value silently
+ if (isdef && deflt == "")
+ deflt = " " # as a flag to force output
+ defaults[$2] = deflt
+ next
+}
+
+# The order of the dependency lines (option, chunk, setting) is irrelevant
+# - the 'enables', 'requires' and 'if' settings will be used to determine
+# the correct order in the output and the final values in pnglibconf.h are
+# not order dependent. 'requires' and 'if' entries take precedence over
+# 'enables' from other options; if an option requires another option it
+# won't be set regardless of any options that enable it unless the other
+# option is also enabled.
+#
+# Similarly 'enables' trumps a NO_ definition in CFLAGS or pngusr.h
+#
+# For simplicity cycles in the definitions are regarded as errors,
+# even if they are not ambiguous.
+# A given NAME can be specified in as many 'option' lines as required, the
+# definitions are additive.
+
+# For backwards compatibility equivalent macros may be listed thus:
+#
+# = [NO_]NAME MACRO
+# Makes -DMACRO equivalent to -DPNG_NO_NAME or -DPNG_NAME_SUPPORTED
+# as appropriate.
+#
+# The definition is injected into the C compiler input when encountered
+# in the second pass (so all these definitions appear *after* the @
+# lines!)
+#
+# 'NAME' is as above, but 'MACRO' is the full text of the equivalent
+# old, deprecated, macro.
+
+$1 == "=" && NF == 3{
+ print "#ifdef PNG_" $3 >out
+ if ($2 ~ /^NO_/)
+ print "# define PNG_" $2 >out
+ else
+ print "# define PNG_" $2 "_SUPPORTED" >out
+ print "#endif" >out
+ next
+}
+
+# Lines may be injected into the C compiler input by preceding them
+# with an "@" character. The line is copied with just the leading
+# @ removed.
+
+$1 ~ /^@/{
+ # sub(/^[ ]*@/, "")
+ $1 = substr($1, 2)
+ print >out
+ next
+}
+
+# Check for unreognized lines, because of the preprocessing chunk
+# format errors will be detected on the first pass independent of
+# any other format errors.
+{
+ print "options.awk: bad line (" NR "):", $0
+ err = 1 # prevent END{} running
+ exit 1
+}
+
+# For checking purposes names that start with "ok_" or "fail_" are
+# not output to pnglibconf.h and must be either enabled or disabled
+# respectively for the build to succeed. This allows interdependencies
+# between options of the form "at least one of" or "at most one of"
+# to be checked. For example:
+#
+# option FLOATING_POINT enables ok_math
+# option FIXED_POINT enables ok_math
+# This ensures that at least one of FLOATING_POINT and FIXED_POINT
+# must be set for the build to succeed.
+#
+# option fail_math requires FLOATING_POINT FIXED_POINT
+# This means the build will fail if *both* FLOATING_POINT and
+# FIXED_POINT are set (this is an example; in fact both are allowed.)
+#
+# If all these options were given the build would require exactly one
+# of the names to be enabled.
+
+END{
+ # END{} gets run on an exit (a traditional awk feature)
+ if (err) exit 1
+
+ if (pre) {
+ # Record the final value of the variables
+ print "deb =", deb >out
+ if (everything != "") {
+ print "everything =", everything >out
+ }
+ print "logunsupported =", logunsupported >out
+ exit 0
+ }
+
+ # Do the 'setting' values first, the algorithm the standard
+ # tree walk (O(1)) done in an O(2) while/for loop; interations
+ # settings x depth, outputing the deepest required macros
+ # first.
+ print "" >out
+ print "/* SETTINGS */" >out
+ print comment, "settings", cend >out
+ finished = 0
+ while (!finished) {
+ finished = 1
+ movement = 0 # done nothing
+ for (i in setting) if (!doneset[i]) {
+ nreqs = split(setting[i], r)
+ if (nreqs > 0) {
+ for (j=1; j<=nreqs; ++j) if (!doneset[r[j]]) {
+ break
+ }
+ if (j<=nreqs) {
+ finished = 0
+ continue # try a different setting
+ }
+ }
+
+ # All the requirements have been processed, output
+ # this setting.
+ if (deb) print "setting", i
+ print "" >out
+ print "/* setting: ", i >out
+ print " * requires:" setting[i] >out
+ print " * default: ", defaults[i], "*/" >out
+ if (defaults[i] == "") { # no default, only check if defined
+ print "#ifdef PNG_" i >out
+ }
+ for (j=1; j<=nreqs; ++j) {
+ print "# ifndef PNG_" r[j] >out
+ print error, i, "requires", r[j] end >out
+ print "# endif" >out
+ }
+ if (defaults[i] != "") { # default handling
+ print "#ifdef PNG_" i >out
+ }
+ print def i, "PNG_" i end >out
+ if (defaults[i] != "") {
+ print "#else /*default*/" >out
+ # And add the default definition for the benefit
+ # of later settings an options test:
+ print "# define PNG_" i defaults[i] >out
+ print def i defaults[i] end >out
+ }
+ print "#endif" >out
+
+ doneset[i] = 1
+ ++movement
+ }
+
+ if (!finished && !movement) {
+ print "setting: loop or missing setting in 'requires', cannot process:"
+ for (i in setting) if (!doneset[i]) {
+ print " setting", i, "requires" setting[i]
+ }
+ exit 1
+ }
+ }
+ print comment, "end of settings", cend >out
+
+ # Now do the options - somewhat more complex. The dependency
+ # tree is thus:
+ #
+ # name > name
+ # name requires name
+ # name if name
+ # name enabledby name
+ #
+ # First build a list 'tree' by option of all the things on which
+ # it depends.
+ print "" >out
+ print "/* OPTIONS */" >out
+ print comment, "options", cend >out
+ for (opt in enabledby) tree[opt] = 1 # may not be explicit options
+ for (opt in option) if (opt != "") {
+ o = option[opt]
+ # option should always be one of the following values
+ if (o != "on" && o != "off" && o != "disabled" && o != "enabled") {
+ print "internal option error (" o ")"
+ exit 1
+ }
+ tree[opt] = "" # so unlisted options marked
+ }
+ for (opt in tree) if (opt != "") {
+ if (tree[opt] == 1) {
+ tree[opt] = ""
+ if (option[opt] != "") {
+ print "internal error (1)"
+ exit 1
+ }
+ # Macros only listed in 'enables' remain off unless
+ # one of the enabling macros is on.
+ option[opt] = "disabled"
+ }
+
+ split("", list) # clear 'list'
+ # Now add every requires, iffs or enabledby entry to 'list'
+ # so that we can add a unique list of requirements to tree[i]
+ split(requires[opt] iffs[opt] enabledby[opt], r)
+ for (i in r) list[r[i]] = 1
+ for (i in list) tree[opt] = tree[opt] " " i
+ }
+
+ # print the tree for extreme debugging
+ if (deb > 2) for (i in tree) if (i != "") print i, "depends-on" tree[i]
+
+ # Ok, now check all options marked explicitly 'on' or 'off':
+ #
+ # If an option[opt] is 'on' then turn on all requires[opt]
+ # If an option[opt] is 'off' then turn off all enabledby[opt]
+ #
+ # Error out if we have to turn 'on' an 'off' option or vice versa.
+ npending = 0
+ for (opt in option) if (opt != "") {
+ if (option[opt] == "on" || option[opt] == "off") {
+ pending[++npending] = opt
+ }
+ }
+
+ err = 0 # set on error
+ while (npending > 0) {
+ opt = pending[npending--]
+ if (option[opt] == "on") {
+ nreqs = split(requires[opt], r)
+ for (j=1; j<=nreqs; ++j) {
+ if (option[r[j]] == "off") {
+ print "option", opt, "turned on, but requirement", r[j], "is turned off"
+ err = 1
+ } else if (option[r[j]] != "on") {
+ option[r[j]] = "on"
+ pending[++npending] = r[j]
+ }
+ }
+ } else {
+ if (option[opt] != "off") {
+ print "internal error (2)"
+ exit 1
+ }
+ nreqs = split(enabledby[opt], r)
+ for (j=1; j<=nreqs; ++j) {
+ if (option[r[j]] == "on") {
+ print "option", opt, "turned off, but enabled by", r[j], "which is turned on"
+ err = 1
+ } else if (option[r[j]] != "off") {
+ option[r[j]] = "off"
+ pending[++npending] = r[j]
+ }
+ }
+ }
+ }
+ if (err) exit 1
+
+ # option[i] is now the complete list of all the tokens we may
+ # need to output, go through it as above, depth first.
+ finished = 0
+ while (!finished) {
+ finished = 1
+ movement = 0 # done nothing
+ for (i in option) if (!done[i]) {
+ nreqs = split(tree[i], r)
+ if (nreqs > 0) {
+ for (j=1; j<=nreqs; ++j) if (!done[r[j]]) {
+ break
+ }
+ if (j<=nreqs) {
+ finished = 0
+ continue # next option
+ }
+ }
+
+ # All the requirements have been processed, output
+ # this option. An option is _SUPPORTED if:
+ #
+ # all 'requires' are _SUPPORTED AND
+ # at least one of the 'if' options are _SUPPORTED AND
+ # EITHER:
+ # The name is _SUPPORTED (on the command line)
+ # OR:
+ # an 'enabledby' is _SUPPORTED
+ # OR:
+ # NO_name is not defined AND
+ # the option is not disabled; an option is disabled if:
+ # option == off
+ # option == disabled && everything != on
+ # option == "" && everything == off
+ if (deb) print "option", i
+ print "" >out
+ print "/* option:", i, option[i] >out
+ print " * requires: " requires[i] >out
+ print " * if: " iffs[i] >out
+ print " * enabled-by:" enabledby[i], "*/" >out
+ print "#undef PNG_on" >out
+ print "#define PNG_on 1" >out
+
+ # requires
+ nreqs = split(requires[i], r)
+ for (j=1; j<=nreqs; ++j) {
+ print "#ifndef PNG_" r[j] "_SUPPORTED" >out
+ print "# undef PNG_on /*!" r[j] "*/" >out
+ # this error appears in the final output if something
+ # was switched 'on' but the processing above to force
+ # the requires did not work
+ if (option[i] == "on") {
+ print error, i, "requires", r[j] end >out
+ }
+ print "#endif" >out
+ }
+
+ # if
+ nreqs = split(iffs[i], r)
+ print "#undef PNG_no_if" >out
+ if (nreqs > 0) {
+ print "/* if" iffs[i], "*/" >out
+ print "#define PNG_no_if 1" >out
+ for (j=1; j<=nreqs; ++j) {
+ print "#ifdef PNG_" r[j] "_SUPPORTED" >out
+ print "# undef PNG_no_if /*" r[j] "*/" >out
+ print "#endif" >out
+ }
+ print "#ifdef PNG_no_if /*missing if*/" >out
+ print "# undef PNG_on" >out
+ # There is no checking above for this, because we
+ # don't know which 'if' to choose, so whine about
+ # it here:
+ if (option[i] == "on") {
+ print error, i, "needs one of:", iffs[i] end >out
+ }
+ print "#endif" >out
+ }
+
+ print "#ifdef PNG_on /*requires, if*/" >out
+ # enables
+ print "# undef PNG_not_enabled" >out
+ print "# define PNG_not_enabled 1" >out
+ print " /* enabled by" enabledby[i], "*/" >out
+ nreqs = split(enabledby[i], r)
+ for (j=1; j<=nreqs; ++j) {
+ print "#ifdef PNG_" r[j] "_SUPPORTED" >out
+ print "# undef PNG_not_enabled /*" r[j] "*/" >out
+ # Oops, probably not intended (should be factored
+ # out by the checks above).
+ if (option[i] == "off") {
+ print error, i, "enabled by:", r[j] end >out
+ }
+ print "#endif" >out
+ }
+
+ print "# ifndef PNG_" i "_SUPPORTED /*!command line*/" >out
+ print "# ifdef PNG_not_enabled /*!enabled*/" >out
+ if (option[i] == "off" || option[i] == "disabled" && everything != "on" || option[i] == "enabled" && everything == "off") {
+ print "# undef PNG_on /*default off*/" >out
+ } else {
+ print "# ifdef PNG_NO_" i >out
+ print "# undef PNG_on /*turned off*/" >out
+ print "# endif" >out
+ print "# ifdef PNG_NO_" i "_SUPPORTED" >out
+ print "# undef PNG_on /*turned off*/" >out
+ print "# endif" >out
+ }
+ print "# endif /*!enabled*/" >out
+ print "# ifdef PNG_on" >out
+ # The _SUPPORTED macro must be defined so that dependent
+ # options output later work.
+ print "# define PNG_" i "_SUPPORTED" >out
+ print "# endif" >out
+ print "# endif /*!command line*/" >out
+ # If PNG_on is still set the option should be defined in
+ # pnglibconf.h
+ print "# ifdef PNG_on" >out
+ if (i ~ /^fail_/) {
+ print error, i, "is on: enabled by:" iffs[i] enabledby[i] ", requires" requires[i] end >out
+ } else if (i !~ /^ok_/) {
+ print def i sup >out
+ }
+ print "# endif /* definition */" >out
+ print "#endif /*requires, if*/" >out
+ if (logunsupported || i ~ /^ok_/) {
+ print "#ifndef PNG_on" >out
+ if (logunsupported) {
+ print und i une >out
+ }
+ if (i ~ /^ok_/) {
+ print error, i, "not enabled: requires:" requires[i] ", enabled by:" iffs[i] enabledby[i] end >out
+ }
+ print "#endif" >out
+ }
+
+ done[i] = 1
+ ++movement
+ }
+
+ if (!finished && !movement) {
+ print "option: loop or missing option in dependency tree, cannot process:"
+ for (i in option) if (!done[i]) {
+ print " option", i, "depends on" tree[i], "needs:"
+ nreqs = split(tree[i], r)
+ if (nreqs > 0) for (j=1; j<=nreqs; ++j) if (!done[r[j]]) {
+ print " " r[j]
+ }
+ }
+ exit 1
+ }
+ }
+ print comment, "end of options", cend >out
+
+ # Regular end - everything looks ok
+ if (protect != "") {
+ print start "#endif", cx, protect, "*/" end >out
+ }
+}
diff --git a/scripts/pnglibconf.dfa b/scripts/pnglibconf.dfa
new file mode 100644
index 0000000..a740d68
--- /dev/null
+++ b/scripts/pnglibconf.dfa
@@ -0,0 +1,578 @@
+# scripts/pnglibconf.dfa - library build configuration control
+#
+@/*- pnglibconf.dfn intermediate file
+@ * generated from scripts/pnglibconf.dfa
+@ */
+#
+com pnglibconf.h - library build configuration
+com
+version
+com
+com Copyright (c) 1998-2011 Glenn Randers-Pehrson
+com
+com This code is released under the libpng license.
+com For conditions of distribution and use, see the disclaimer
+com and license in png.h
+com
+
+file pnglibconf.h scripts/pnglibconf.dfa PNGLCONF_H
+
+# This file is preprocessed by scripts/options.awk and the
+# C compiler to generate 'pnglibconf.h' - a list of all the
+# configuration options. The file lists the various options
+# that can *only* be specified during the libpng build;
+# pnglibconf.h freezes the definitons selected for the specific
+# build.
+#
+# The syntax is detailed in scripts/options.awk, this is a summary
+# only:
+#
+# setting <name> [requires ...] [default]
+# #define PNG_<name> <value> /* value comes from current setting */
+# option <name> [requires ...] [if ...] [enables ...] [disabled]
+# #define PNG_<name>_SUPPORTED if the requirements are met and
+# enable the other options listed
+# chunk <name> [requires ...] [disabled]
+# Enable chunk processing for the given ancillary chunk
+#
+# Note that the 'on' and 'off' keywords, while valid on both option
+# and chunk, should not be used in this file because they force the
+# relevant options on or off.
+
+#----------------------------------------------------------------------
+
+# The following setting, option and chunk values can all be changed
+# while building libpng:
+#
+# setting: change 'setting' lines to fine tune library performance,
+# changes to the settings don't affect the libpng API functionally
+#
+# option: change 'option' lines to remove or add capabilities from
+# or to the library; options change the library API
+#
+# chunk: change 'chunk' lines to remove capabilities to process
+# optional ('ancillary') chunks. This does not prevent PNG
+# decoding but does change the libpng API because some chunks
+# will be ignored.
+#
+# There are three ways of disabling features, in no particular order:
+#
+# 1) Create 'pngusr.h', enter the required private build information
+# detailed below and #define PNG_NO_<option> for each option you
+# don't want in that file in that file. You can also turn on options
+# using PNG_<option>_SUPPORTED. When you have finished rerun
+# configure and rebuild pnglibconf.h file with -DPNG_USER_CONFIG:
+#
+# make clean
+# CPPFLAGS='-DPNG_USER_CONFIG' ./configure
+# make pnglibconf.h
+#
+# pngusr.h is only used during the creation of pnglibconf.h, but it
+# is safer to ensure that -DPNG_USER_CONFIG is specified throughout
+# the build by changing the CPPFLAGS passed to the initial ./configure
+#
+# 2) Add definitions of the settings you want to change to
+# CPPFLAGS; for example:
+#
+# -DPNG_DEFAULT_READ_MACROS=0
+#
+# (This would change the default to *not* use read macros.) Be
+# very careful to change only settings that don't alter the API
+# because this approach bypasses the private build checking. You
+# can also change settings from pngpriv.h (read pngpriv.h) safely
+# without API changes. Do that in the same way.
+#
+# 3) Write a new '.dfa' file (say 'pngusr.dfa') and in this file
+# provide override values for setting entries and turn option or
+# chunk values explicitly 'on' or 'off':
+#
+# setting FOO default VALUE
+# option BAR [on|off]
+#
+# Then add this file to the options.awk command line (the *first*
+# one) after this file. The make macro DFA_XTRA is provided to make
+# this easier (set it like CPPFLAGS prior to running ./configure).
+# Look at the builds below contrib/pngminim for some extreme examples
+# of how this can be used.
+#
+# Don't edit this file unless you are contributing a patch to
+# libpng and need new or modified options/settings.
+#----------------------------------------------------------------------
+
+# The following causes commented out #undef lines to be written to
+# pnglibconf.h; this can be stopped by logunsupported=0 in a later
+# file or on the command line (after pnglibconf.dfa)
+
+logunsupported = 1
+
+# PNG_USER_CONFIG has to be defined on the compiler command line
+# to cause pngusr.h to be read while constructing pnglibconf.h
+#
+# If you create a private DLL you need to define the following
+# macros in the file 'pngusr.h' and set -DPNG_USER_CONFIG for
+# compilation (i.e. in CFLAGS.)
+# #define PNG_USER_PRIVATEBUILD \
+# <Describes by whom and why this version of the DLL was built>
+# e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
+# #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
+# distinguish your DLL from those of the official release. These
+# correspond to the trailing letters that come after the version
+# number and must match your private DLL name>
+# e.g. // private DLL "libpng13gx.dll"
+# #define PNG_USER_DLLFNAME_POSTFIX "gx"
+#
+# The following macros are also at your disposal if you want to complete the
+# DLL VERSIONINFO structure.
+# - PNG_USER_VERSIONINFO_COMMENTS
+# - PNG_USER_VERSIONINFO_COMPANYNAME
+# - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
+
+@#ifdef PNG_USER_CONFIG
+@# include "pngusr.h"
+@#endif
+
+# This is a special fixup for the Watcom C compiler on Windows, which has
+# multiple procedure call standards. Unless PNG_API_RULE is set explicitly
+# (i.e. if it is not defined at this point) it will be forced to '2' here when
+# using Watcom. This indicates to the other header files that Watcom behaviour
+# is required where appropriate.
+
+@#ifdef __WATCOMC__
+@# ifndef PNG_API_RULE
+@# define PNG_API_RULE 2 /* Use Watcom calling conventions */
+@# endif
+@#endif
+
+# Note that PNG_USR_CONFIG only has an effect when building
+# pnglibconf.h
+
+setting USER_CONFIG
+setting USER_PRIVATEBUILD
+setting USER_DLLFNAME_POSTFIX
+setting USER_VERSIONINFO_COMMENTS
+setting USER_VERSIONINFO_COMPANYNAME
+setting USER_VERSIONINFO_LEGALTRADEMARKS
+
+# Record the 'API rule' used to select calling conventions on
+# those systems that support such things (see all the comments in
+# pngconf.h)
+# Changing this setting has a fundamental affect on the PNG ABI,
+# do not release shared libraries with this changed.
+
+setting API_RULE default 0
+
+# Default to using the read macros
+
+setting DEFAULT_READ_MACROS default 1
+
+# The alternative is to call functions to read PNG values, if
+# the functions are turned *off* the read macros must always
+# be enabled, so turning this off will actually force the
+# USE_READ_MACROS option on (see pngconf.h)
+
+option READ_INT_FUNCTIONS requires READ
+
+# The same for write, but these can only be switched off if
+# no writing is required at all - hence the use of an 'enables'
+# not a 'requires' below:
+
+option WRITE_INT_FUNCTIONS disabled
+option WRITE enables WRITE_INT_FUNCTIONS
+
+# Generic options - affect both read and write.
+
+option WARNINGS
+option BENIGN_ERRORS
+option MNG_FEATURES
+
+# Arithmetic options, the first is the big switch that chooses between internal
+# floating and fixed point arithmetic implementations - it does not affect any
+# APIs. The second two (the _POINT settings) switch off individual APIs.
+
+option FLOATING_ARITHMETIC
+option FLOATING_POINT enables ok_math
+option FIXED_POINT enables ok_math
+
+# Added at libpng version 1.4.0
+
+option ERROR_TEXT
+
+# The following is always on (defined empty)
+
+setting CALLOC_SUPPORTED default
+
+# This protects us against compilers that run on a windowing system
+# and thus don't have or would rather us not use the stdio types:
+# stdin, stdout, and stderr. The only one currently used is stderr
+# in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
+# prevent these from being compiled and used. #defining PNG_NO_STDIO
+# will also prevent these, plus will prevent the entire set of stdio
+# macros and functions (FILE *, printf, etc.) from being compiled and used,
+# unless (PNG_DEBUG > 0) has been #defined.
+
+option STDIO
+option CONSOLE_IO requires STDIO
+
+# Note: prior to 1.5.0 this option could not be disabled if STDIO
+# was enabled. Prior to 1.5.3 this option required STDIO
+
+option TIME_RFC1123
+
+# PNG_SETJMP_NOT_SUPPORTED is an old equivalent for NO_SETJMP
+
+option SETJMP
+= NO_SETJMP SETJMP_NOT_SUPPORTED
+
+# For the moment this is disabled (no code support):
+
+option ERROR_NUMBERS disabled
+
+# If this is disabled it is not possible for apps to get the
+# values from the 'info' structure, this effectively removes
+# quite a lot of the READ API.
+
+option EASY_ACCESS
+
+# Added at libpng-1.2.0
+
+option USER_MEM
+
+# Added at libpng-1.4.0
+
+option IO_STATE
+
+# This is only for PowerPC big-endian and 680x0 systems
+# some testing, not enabled by default.
+# NO LONGER USED
+
+#option READ_BIG_ENDIAN disabled
+
+# Allow users to control limits on what the READ code will
+# read:
+
+# Added at libpng-1.2.43; adds limit fields to png_struct,
+# allows some usages of these fields
+
+option USER_LIMITS
+
+# Added at libpng-1.2.6; adds setting APIs, allows additional
+# usage of this field (UTSL)
+
+option SET_USER_LIMITS requires USER_LIMITS
+
+# Feature added at libpng-1.4.0, this flag added at 1.4.1
+option SET_USER_LIMITS enables SET_CHUNK_CACHE_LIMIT
+# Feature added at libpng-1.4.1, this flag added at 1.4.1
+
+option SET_USER_LIMITS enables SET_CHUNK_MALLOC_LIMIT
+
+# Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
+# how large, set these two limits to 0x7fffffff
+
+setting USER_WIDTH_MAX default 1000000
+setting USER_HEIGHT_MAX default 1000000
+
+# Added at libpng-1.2.43. To accept all valid PNGs no matter
+# how large, set these two limits to 0.
+
+setting USER_CHUNK_CACHE_MAX default 0
+
+# Added at libpng-1.2.43
+
+setting USER_CHUNK_MALLOC_MAX default 0
+
+# All of the following options relate to code capabilities for
+# processing image data before creating a PNG or after reading one.
+# You can remove these capabilities safely and still be PNG
+# conformant, however the library that results is still non-standard.
+# See the comments above about how to change options and settings.
+
+# READ options
+
+option READ enables READ_INTERLACING
+
+# Disabling READ_16BIT does not disable reading 16-bit PNG files, but it
+# forces them to be chopped down to 8-bit, and disables any 16-bit
+# processing after that has happened. You need to be sure to enable
+# READ_SCALE_16_TO_8 or READ_STRIP_16_TO_8 when you disable READ_16BIT for
+# this to work properly. You should disable the other option if you need to
+# ensure a particular conversion (otherwise the app can chose.)
+
+option READ_16BIT requires READ enables 16BIT
+
+option READ_QUANTIZE requires READ
+
+option READ_TRANSFORMS requires READ
+= NO_READ_TRANSFORMS READ_TRANSFORMS_NOT_SUPPORTED
+
+option READ_EXPAND requires READ_TRANSFORMS
+option READ_EXPAND_16 requires READ_TRANSFORMS READ_16BIT enables READ_EXPAND
+option READ_SHIFT requires READ_TRANSFORMS
+option READ_PACK requires READ_TRANSFORMS
+option READ_BGR requires READ_TRANSFORMS
+option READ_SWAP requires READ_TRANSFORMS READ_16BIT
+option READ_PACKSWAP requires READ_TRANSFORMS
+option READ_INVERT requires READ_TRANSFORMS
+option READ_BACKGROUND requires READ_TRANSFORMS enables READ_STRIP_ALPHA
+option READ_STRIP_16_TO_8 requires READ_TRANSFORMS
+option READ_SCALE_16_TO_8 requires READ_TRANSFORMS
+option READ_FILLER requires READ_TRANSFORMS
+option READ_GAMMA requires READ_TRANSFORMS enables READ_gAMA
+option READ_GRAY_TO_RGB requires READ_TRANSFORMS
+
+option READ_ALPHA_MODE requires READ_TRANSFORMS enables READ_GAMMA
+option READ_SWAP_ALPHA requires READ_TRANSFORMS
+option READ_INVERT_ALPHA requires READ_TRANSFORMS
+option READ_STRIP_ALPHA requires READ_TRANSFORMS
+option READ_USER_TRANSFORM requires READ_TRANSFORMS
+option READ_RGB_TO_GRAY requires READ_TRANSFORMS
+
+option PROGRESSIVE_READ requires READ
+option SEQUENTIAL_READ requires READ
+
+# You can define PNG_NO_PROGRESSIVE_READ if you don't do progressive reading.
+# This is not talking about interlacing capability! You'll still have
+# interlacing unless you turn off the following which is required
+# for PNG-compliant decoders. (In other words, do not do this - in
+# fact it can't be disabled from the command line!)
+#option READ_INTERLACING requires READ
+
+option READ_COMPOSITE_NODIV requires READ
+= NO_READ_COMPOSITE_NODIV NO_READ_COMPOSITED_NODIV
+
+# Inch conversions
+
+option INCH_CONVERSIONS
+= INCH_CONVERSIONS INCH_CONVERSIONS
+
+# API to build a grayscale palette
+
+option BUILD_GRAYSCALE_PALETTE
+
+# IN DEVELOPMENT
+# These are currently experimental features; define them if you want
+
+# NOTHING HERE
+
+# WRITE options
+
+option WRITE
+
+# Disabling WRITE_16BIT prevents 16-bit PNG files from being
+# generated.
+option WRITE_16BIT requires WRITE enables 16BIT
+
+option WRITE_TRANSFORMS requires WRITE
+= NO_WRITE_TRANSFORMS WRITE_TRANSFORMS_NOT_SUPPORTED
+
+option WRITE_SHIFT requires WRITE_TRANSFORMS
+option WRITE_PACK requires WRITE_TRANSFORMS
+option WRITE_BGR requires WRITE_TRANSFORMS
+option WRITE_SWAP requires WRITE_TRANSFORMS WRITE_16BIT
+option WRITE_PACKSWAP requires WRITE_TRANSFORMS
+option WRITE_INVERT requires WRITE_TRANSFORMS
+option WRITE_FILLER requires WRITE_TRANSFORMS
+option WRITE_SWAP_ALPHA requires WRITE_TRANSFORMS
+option WRITE_INVERT_ALPHA requires WRITE_TRANSFORMS
+option WRITE_USER_TRANSFORM requires WRITE_TRANSFORMS
+
+# This is not required for PNG-compliant encoders, but can cause
+# trouble if left undefined
+
+option WRITE_INTERLACING requires WRITE
+
+# The following depends, internally, on WEIGHT_SHIFT and COST_SHIFT
+# where are set below.
+
+option WRITE_WEIGHTED_FILTER requires WRITE
+
+option WRITE_FLUSH requires WRITE
+
+# Note: these can be turned off explicitly if not required by the
+# apps implementing the user transforms
+option USER_TRANSFORM_PTR if READ_USER_TRANSFORM WRITE_USER_TRANSFORM
+option USER_TRANSFORM_INFO if READ_USER_TRANSFORM WRITE_USER_TRANSFORM
+
+# This enables API to set compression parameters for compressing
+# non-IDAT chunks (zTXt, iTXt, iCCP, and unknown chunks). This feature
+# was added at libpng-1.5.3.
+option WRITE_CUSTOMIZE_ZTXT_COMPRESSION requires WRITE
+
+# Any chunks you are not interested in, you can undef here. The
+# ones that allocate memory may be expecially important (hIST,
+# tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
+# a bit smaller.
+
+# The size of the png_text structure changed in libpng-1.0.6 when
+# iTXt support was added. iTXt support was turned off by default through
+# libpng-1.2.x, to support old apps that malloc the png_text structure
+# instead of calling png_set_text() and letting libpng malloc it. It
+# was turned on by default in libpng-1.4.0.
+
+option READ_ANCILLARY_CHUNKS requires READ
+# PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated.
+= NO_READ_ANCILLARY_CHUNKS READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
+
+option WRITE_ANCILLARY_CHUNKS requires WRITE
+# PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated.
+= NO_WRITE_ANCILLARY_CHUNKS WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED
+
+# These options disable *all* the text chunks if turned off
+
+option READ_TEXT requires READ_ANCILLARY_CHUNKS enables TEXT
+option WRITE_TEXT requires WRITE_ANCILLARY_CHUNKS enables TEXT
+
+# Moved to pnglibconf.h at libpng-1.5.0
+# Feature support: in 1.4 this was in pngconf.h, but the following
+# features have no affect on the libpng API. Add library
+# only features to the end of this list. Add features that
+# affect the API above. (Note: the list of chunks follows
+# the library-only settings.)
+#
+# BUILD TIME ONLY OPTIONS
+# These options do not affect the API but rather alter how the
+# API is implemented, they get recorded in pnglibconf.h, but
+# can't be changed by the application.
+
+# Check the correctness of cHRM chunks
+
+option CHECK_cHRM requires cHRM
+
+#
+# Artificially align memory - the code typically aligns to 8 byte
+# boundaries if this is switched on, it's a small waste of space
+# but can help (in theory) on some architectures. Only affects
+# internal structures. Added at libpng 1.4.0
+
+option ALIGN_MEMORY
+
+# Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING
+# See png[wr]util.c, normally this should always be *on*
+
+option POINTER_INDEXING
+
+# Other defines for things like memory and the like can go here.
+
+# BUILD TIME SETTINGS
+# Like build time options these do not affect the API, but they
+# may be useful to applications because they record details of
+# how the API will behave particularly with regard to overall
+# accuracy.
+
+# This controls how fine the quantizing gets. As this allocates
+# a largish chunk of memory (32K), those who are not as concerned
+# with quantizing quality can decrease some or all of these.
+
+setting QUANTIZE_RED_BITS default 5
+setting QUANTIZE_GREEN_BITS default 5
+setting QUANTIZE_BLUE_BITS default 5
+
+# This controls how fine the gamma correction becomes when you
+# are only interested in 8 bits anyway. Increasing this value
+# results in more memory being used, and more pow() functions
+# being called to fill in the gamma tables. Don't set this value
+# less then 8, and even that may not work (I haven't tested it).
+
+setting MAX_GAMMA_8 default 11
+
+# This controls how much a difference in gamma we can tolerate before
+# we actually start doing gamma conversion, it's a fixed point value,
+# so the default below is 0.05, meaning libpng ignores corrections in
+# the range 0.95 to 1.05
+
+setting GAMMA_THRESHOLD_FIXED default 5000
+
+# Scaling factor for filter heuristic weighting calculations
+
+setting WEIGHT_SHIFT default 8
+setting COST_SHIFT default 3
+
+# Precision to use when converting a floating point value to a PNG
+# extension format string in an sCAL chunk (only relevant if the
+# floating point API is enabled)
+
+setting sCAL_PRECISION default 5
+
+# This is the size of the compression buffer, and thus the size of
+# an IDAT chunk. Make this whatever size you feel is best for your
+# machine. One of these will be allocated per png_struct. When this
+# is full, it writes the data to the disk, and does some other
+# calculations. Making this an extremely small size may slow
+# the library down, but you may want to experiment to determine
+# where it becomes significant, if you are concerned with memory
+# usage. Note that zlib allocates at least 32Kb also. For readers,
+# this describes the size of the buffer available to read the data in.
+# Unless this gets smaller than the size of a row (compressed),
+# it should not make much difference how big this is.
+
+setting ZBUF_SIZE default 8192
+
+# Ancillary chunks
+chunk bKGD
+chunk cHRM
+chunk gAMA
+chunk hIST
+chunk iCCP
+chunk iTXt
+chunk oFFs
+chunk pCAL
+chunk sCAL
+chunk pHYs
+chunk sBIT
+chunk sPLT
+chunk sRGB
+chunk tEXt requires TEXT
+chunk tIME
+chunk tRNS
+chunk zTXt
+
+# This only affects support of the optional PLTE chunk in RGB and RGBA
+# images. Notice that READ_ANCILLARY_CHUNKS therefore disables part
+# of the regular chunk reading too.
+
+option READ_OPT_PLTE requires READ_ANCILLARY_CHUNKS
+
+option READ_UNKNOWN_CHUNKS requires READ
+option READ_UNKNOWN_CHUNKS enables UNKNOWN_CHUNKS READ_USER_CHUNKS
+option READ_USER_CHUNKS requires READ enables USER_CHUNKS
+
+option CONVERT_tIME requires WRITE_ANCILLARY_CHUNKS
+# The "tm" structure is not supported on WindowsCE
+
+@#ifdef _WIN32_WCE
+@# define PNG_NO_CONVERT_tIME
+@#endif
+
+option WRITE_FILTER requires WRITE
+
+option WRITE_UNKNOWN_CHUNKS requires WRITE
+
+option HANDLE_AS_UNKNOWN
+
+option SAVE_INT_32 requires WRITE
+
+# png_save_int_32 is required by the ancillary chunks oFFs and pCAL
+
+# added at libpng-1.5.4
+
+option WRITE_OPTIMIZE_CMF requires WRITE
+
+option READ_COMPRESSED_TEXT disabled
+option READ_iCCP enables READ_COMPRESSED_TEXT
+option READ_iTXt enables READ_COMPRESSED_TEXT
+option READ_zTXt enables READ_COMPRESSED_TEXT
+option READ_COMPRESSED_TEXT enables READ_TEXT
+
+option WRITE_oFFs enables SAVE_INT_32
+option WRITE_pCAL enables SAVE_INT_32
+
+option WRITE_COMPRESSED_TEXT disabled
+option WRITE_iCCP enables WRITE_COMPRESSED_TEXT
+option WRITE_iTXt enables WRITE_COMPRESSED_TEXT
+option WRITE_zTXt enables WRITE_COMPRESSED_TEXT
+option WRITE_COMPRESSED_TEXT enables WRITE_TEXT
+
+# Turn this off to disable png_read_png() and png_write_png() and
+# leave the row_pointers member out of the info structure.
+
+option INFO_IMAGE
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
new file mode 100644
index 0000000..a46d433
--- /dev/null
+++ b/scripts/pnglibconf.h.prebuilt
@@ -0,0 +1,187 @@
+
+/* libpng STANDARD API DEFINITION */
+
+/* pnglibconf.h - library build configuration */
+
+/* Libpng 1.5.10beta01 - February 19, 2012 */
+
+/* Copyright (c) 1998-2011 Glenn Randers-Pehrson */
+
+/* This code is released under the libpng license. */
+/* For conditions of distribution and use, see the disclaimer */
+/* and license in png.h */
+
+/* pnglibconf.h */
+/* Derived from: scripts/pnglibconf.dfa */
+/* If you edit this file by hand you must obey the rules expressed in */
+/* pnglibconf.dfa with respect to the dependencies between the following */
+/* symbols. It is much better to generate a new file using */
+/* scripts/libpngconf.mak */
+
+#ifndef PNGLCONF_H
+#define PNGLCONF_H
+/* settings */
+#define PNG_API_RULE 0
+#define PNG_CALLOC_SUPPORTED
+#define PNG_COST_SHIFT 3
+#define PNG_DEFAULT_READ_MACROS 1
+#define PNG_GAMMA_THRESHOLD_FIXED 5000
+#define PNG_MAX_GAMMA_8 11
+#define PNG_QUANTIZE_BLUE_BITS 5
+#define PNG_QUANTIZE_GREEN_BITS 5
+#define PNG_QUANTIZE_RED_BITS 5
+#define PNG_sCAL_PRECISION 5
+#define PNG_USER_CHUNK_CACHE_MAX 0
+#define PNG_USER_CHUNK_MALLOC_MAX 0
+#define PNG_USER_HEIGHT_MAX 1000000
+#define PNG_USER_WIDTH_MAX 1000000
+#define PNG_WEIGHT_SHIFT 8
+#define PNG_ZBUF_SIZE 8192
+/* end of settings */
+/* options */
+#define PNG_16BIT_SUPPORTED
+#define PNG_ALIGN_MEMORY_SUPPORTED
+#define PNG_BENIGN_ERRORS_SUPPORTED
+#define PNG_bKGD_SUPPORTED
+#define PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
+#define PNG_CHECK_cHRM_SUPPORTED
+#define PNG_cHRM_SUPPORTED
+#define PNG_CONSOLE_IO_SUPPORTED
+#define PNG_CONVERT_tIME_SUPPORTED
+#define PNG_EASY_ACCESS_SUPPORTED
+/*#undef PNG_ERROR_NUMBERS_SUPPORTED*/
+#define PNG_ERROR_TEXT_SUPPORTED
+#define PNG_FIXED_POINT_SUPPORTED
+#define PNG_FLOATING_ARITHMETIC_SUPPORTED
+#define PNG_FLOATING_POINT_SUPPORTED
+#define PNG_gAMA_SUPPORTED
+#define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#define PNG_hIST_SUPPORTED
+#define PNG_iCCP_SUPPORTED
+#define PNG_INCH_CONVERSIONS_SUPPORTED
+#define PNG_INFO_IMAGE_SUPPORTED
+#define PNG_IO_STATE_SUPPORTED
+#define PNG_iTXt_SUPPORTED
+#define PNG_MNG_FEATURES_SUPPORTED
+#define PNG_oFFs_SUPPORTED
+#define PNG_pCAL_SUPPORTED
+#define PNG_pHYs_SUPPORTED
+#define PNG_POINTER_INDEXING_SUPPORTED
+#define PNG_PROGRESSIVE_READ_SUPPORTED
+#define PNG_READ_16BIT_SUPPORTED
+#define PNG_READ_ALPHA_MODE_SUPPORTED
+#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
+#define PNG_READ_BACKGROUND_SUPPORTED
+#define PNG_READ_BGR_SUPPORTED
+#define PNG_READ_bKGD_SUPPORTED
+#define PNG_READ_cHRM_SUPPORTED
+#define PNG_READ_COMPOSITE_NODIV_SUPPORTED
+#define PNG_READ_COMPRESSED_TEXT_SUPPORTED
+#define PNG_READ_EXPAND_16_SUPPORTED
+#define PNG_READ_EXPAND_SUPPORTED
+#define PNG_READ_FILLER_SUPPORTED
+#define PNG_READ_gAMA_SUPPORTED
+#define PNG_READ_GAMMA_SUPPORTED
+#define PNG_READ_GRAY_TO_RGB_SUPPORTED
+#define PNG_READ_hIST_SUPPORTED
+#define PNG_READ_iCCP_SUPPORTED
+#define PNG_READ_INTERLACING_SUPPORTED
+#define PNG_READ_INT_FUNCTIONS_SUPPORTED
+#define PNG_READ_INVERT_ALPHA_SUPPORTED
+#define PNG_READ_INVERT_SUPPORTED
+#define PNG_READ_iTXt_SUPPORTED
+#define PNG_READ_oFFs_SUPPORTED
+#define PNG_READ_OPT_PLTE_SUPPORTED
+#define PNG_READ_PACK_SUPPORTED
+#define PNG_READ_PACKSWAP_SUPPORTED
+#define PNG_READ_pCAL_SUPPORTED
+#define PNG_READ_pHYs_SUPPORTED
+#define PNG_READ_QUANTIZE_SUPPORTED
+#define PNG_READ_RGB_TO_GRAY_SUPPORTED
+#define PNG_READ_sBIT_SUPPORTED
+#define PNG_READ_SCALE_16_TO_8_SUPPORTED
+#define PNG_READ_sCAL_SUPPORTED
+#define PNG_READ_SHIFT_SUPPORTED
+#define PNG_READ_sPLT_SUPPORTED
+#define PNG_READ_sRGB_SUPPORTED
+#define PNG_READ_STRIP_16_TO_8_SUPPORTED
+#define PNG_READ_STRIP_ALPHA_SUPPORTED
+#define PNG_READ_SUPPORTED
+#define PNG_READ_SWAP_ALPHA_SUPPORTED
+#define PNG_READ_SWAP_SUPPORTED
+#define PNG_READ_tEXt_SUPPORTED
+#define PNG_READ_TEXT_SUPPORTED
+#define PNG_READ_tIME_SUPPORTED
+#define PNG_READ_TRANSFORMS_SUPPORTED
+#define PNG_READ_tRNS_SUPPORTED
+#define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_READ_USER_CHUNKS_SUPPORTED
+#define PNG_READ_USER_TRANSFORM_SUPPORTED
+#define PNG_READ_zTXt_SUPPORTED
+#define PNG_SAVE_INT_32_SUPPORTED
+#define PNG_sBIT_SUPPORTED
+#define PNG_sCAL_SUPPORTED
+#define PNG_SEQUENTIAL_READ_SUPPORTED
+#define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
+#define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
+#define PNG_SETJMP_SUPPORTED
+#define PNG_SET_USER_LIMITS_SUPPORTED
+#define PNG_sPLT_SUPPORTED
+#define PNG_sRGB_SUPPORTED
+#define PNG_STDIO_SUPPORTED
+#define PNG_tEXt_SUPPORTED
+#define PNG_TEXT_SUPPORTED
+#define PNG_TIME_RFC1123_SUPPORTED
+#define PNG_tIME_SUPPORTED
+#define PNG_tRNS_SUPPORTED
+#define PNG_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_USER_CHUNKS_SUPPORTED
+#define PNG_USER_LIMITS_SUPPORTED
+#define PNG_USER_MEM_SUPPORTED
+#define PNG_USER_TRANSFORM_INFO_SUPPORTED
+#define PNG_USER_TRANSFORM_PTR_SUPPORTED
+#define PNG_WARNINGS_SUPPORTED
+#define PNG_WRITE_16BIT_SUPPORTED
+#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
+#define PNG_WRITE_BGR_SUPPORTED
+#define PNG_WRITE_bKGD_SUPPORTED
+#define PNG_WRITE_cHRM_SUPPORTED
+#define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
+#define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+#define PNG_WRITE_FILLER_SUPPORTED
+#define PNG_WRITE_FILTER_SUPPORTED
+#define PNG_WRITE_FLUSH_SUPPORTED
+#define PNG_WRITE_gAMA_SUPPORTED
+#define PNG_WRITE_hIST_SUPPORTED
+#define PNG_WRITE_iCCP_SUPPORTED
+#define PNG_WRITE_INTERLACING_SUPPORTED
+#define PNG_WRITE_INT_FUNCTIONS_SUPPORTED
+#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
+#define PNG_WRITE_INVERT_SUPPORTED
+#define PNG_WRITE_iTXt_SUPPORTED
+#define PNG_WRITE_oFFs_SUPPORTED
+#define PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
+#define PNG_WRITE_PACK_SUPPORTED
+#define PNG_WRITE_PACKSWAP_SUPPORTED
+#define PNG_WRITE_pCAL_SUPPORTED
+#define PNG_WRITE_pHYs_SUPPORTED
+#define PNG_WRITE_sBIT_SUPPORTED
+#define PNG_WRITE_sCAL_SUPPORTED
+#define PNG_WRITE_SHIFT_SUPPORTED
+#define PNG_WRITE_sPLT_SUPPORTED
+#define PNG_WRITE_sRGB_SUPPORTED
+#define PNG_WRITE_SUPPORTED
+#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
+#define PNG_WRITE_SWAP_SUPPORTED
+#define PNG_WRITE_tEXt_SUPPORTED
+#define PNG_WRITE_TEXT_SUPPORTED
+#define PNG_WRITE_tIME_SUPPORTED
+#define PNG_WRITE_TRANSFORMS_SUPPORTED
+#define PNG_WRITE_tRNS_SUPPORTED
+#define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_WRITE_USER_TRANSFORM_SUPPORTED
+#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+#define PNG_WRITE_zTXt_SUPPORTED
+#define PNG_zTXt_SUPPORTED
+/* end of options */
+#endif /* PNGLCONF_H */
diff --git a/scripts/pnglibconf.mak b/scripts/pnglibconf.mak
new file mode 100755
index 0000000..c04578f
--- /dev/null
+++ b/scripts/pnglibconf.mak
@@ -0,0 +1,58 @@
+#!/usr/bin/make -f
+# pnglibconf.mak - standard make lines for pnglibconf.h
+#
+# These lines are copied from Makefile.am, they illustrate
+# how to automate the build of pnglibconf.h from scripts/pnglibconf.dfa
+# given 'awk' and 'sed'
+
+# Override as appropriate, these definitions can be overridden on
+# the make command line (AWK='nawk' for example).
+AWK = gawk
+AWK = mawk
+AWK = nawk
+AWK = one-true-awk
+AWK = awk # Crashes on SunOS 5.10 - use 'nawk'
+CPP = $(CC) -E # Does not work on SUN OS 5.10 - use /lib/cpp
+SED = sed
+
+COPY = cp
+DELETE = rm -f
+ECHO = echo
+DFA_XTRA = # Appended to scripts/options.awk
+
+# CPPFLAGS should contain the options to control the result,
+# but DEFS and CFLAGS are also supported here, override
+# as appropriate
+DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)
+
+# srcdir is a defacto standard for the location of the source
+srcdir = .
+
+# The standard pnglibconf.h exists as scripts/pnglibconf.h.prebuilt,
+# copy this if the following doesn't work.
+pnglibconf.h: pnglibconf.dfn
+ $(DELETE) $@ dfn.c dfn1.out dfn2.out dfn3.out
+ $(ECHO) '#include "pnglibconf.dfn"' >dfn.c
+ $(CPP) $(DFNFLAGS) dfn.c >dfn1.out
+ $(ECHO) "If 'cpp -e' crashes try /lib/cpp (e.g. CPP='/lib/cpp')" >&2
+ $(SED) -n -e 's|^.*PNG_DEFN_MAGIC *-\(.*\)- *PNG_DEFN_END.*$$|\1|p'\
+ dfn1.out >dfn2.out
+ $(SED) -e 's| *PNG_JOIN *||g' -e 's| *$$||' dfn2.out >dfn3.out
+ $(COPY) dfn3.out $@
+ $(DELETE) dfn.c dfn1.out dfn2.out dfn3.out
+
+pnglibconf.dfn: $(srcdir)/scripts/pnglibconf.dfa $(srcdir)/scripts/options.awk $(srcdir)/pngconf.h
+ $(DELETE) $@ dfn1.out dfn2.out
+ $(ECHO) "Calling $(AWK) from scripts/pnglibconf.mak" >&2
+ $(ECHO) "If 'awk' crashes try a better awk (e.g. AWK='nawk')" >&2
+ $(AWK) -f $(srcdir)/scripts/options.awk out=dfn1.out version=search\
+ $(srcdir)/pngconf.h $(srcdir)/scripts/pnglibconf.dfa\
+ $(DFA_XTRA) 1>&2
+ $(AWK) -f $(srcdir)/scripts/options.awk out=dfn2.out dfn1.out 1>&2
+ $(COPY) dfn2.out $@
+ $(DELETE) dfn1.out dfn2.out
+
+clean-pnglibconf:
+ $(DELETE) pnglibconf.h pnglibconf.dfn dfn.c dfn1.out dfn2.out dfn3.out
+
+clean: clean-pnglibconf
diff --git a/scripts/smakefile.ppc b/scripts/smakefile.ppc
index 531c693..2e7380b 100644
--- a/scripts/smakefile.ppc
+++ b/scripts/smakefile.ppc
@@ -20,7 +20,8 @@
MKDIR = makedir
OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o pngread.o \
-pngerror.o pngpread.o pngwrite.o pngrtran.o pngwtran.o pngrio.o pngwio.o pngmem.o
+ pngerror.o pngpread.o pngwrite.o pngrtran.o pngwtran.o pngrio.o \
+ pngwio.o pngmem.o
all: $(LIBNAME) pngtest
diff --git a/scripts/sym.dfn b/scripts/sym.dfn
new file mode 100644
index 0000000..f4f13df
--- /dev/null
+++ b/scripts/sym.dfn
@@ -0,0 +1,15 @@
+
+/* sym.dfn - define format of libpng.sym
+ *
+ * Last changed in libpng version 1.5.0 [January 6, 2011]
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
+ PNG_DEFN_MAGIC-SYMBOL_PREFIX PNG_JOIN name-PNG_DEFN_END
+
+#include "../png.h"
diff --git a/scripts/symbols.def b/scripts/symbols.def
new file mode 100644
index 0000000..f3801f4
--- /dev/null
+++ b/scripts/symbols.def
@@ -0,0 +1,241 @@
+;--------------------------------------------------------------
+; LIBPNG symbol list as a Win32 DEF file
+; Contains all the symbols that can be exported from libpng
+;--------------------------------------------------------------
+LIBRARY
+
+EXPORTS
+;Version 1.5.10beta01
+ png_access_version_number @1
+ png_set_sig_bytes @2
+ png_sig_cmp @3
+ png_create_read_struct @4
+ png_create_write_struct @5
+ png_get_compression_buffer_size @6
+ png_set_compression_buffer_size @7
+ png_set_longjmp_fn @8
+ png_longjmp @9
+ png_reset_zstream @10
+ png_create_read_struct_2 @11
+ png_create_write_struct_2 @12
+ png_write_sig @13
+ png_write_chunk @14
+ png_write_chunk_start @15
+ png_write_chunk_data @16
+ png_write_chunk_end @17
+ png_create_info_struct @18
+ png_info_init_3 @19
+ png_write_info_before_PLTE @20
+ png_write_info @21
+ png_read_info @22
+ png_convert_to_rfc1123 @23
+ png_convert_from_struct_tm @24
+ png_convert_from_time_t @25
+ png_set_expand @26
+ png_set_expand_gray_1_2_4_to_8 @27
+ png_set_palette_to_rgb @28
+ png_set_tRNS_to_alpha @29
+ png_set_bgr @30
+ png_set_gray_to_rgb @31
+ png_set_rgb_to_gray @32
+ png_set_rgb_to_gray_fixed @33
+ png_get_rgb_to_gray_status @34
+ png_build_grayscale_palette @35
+ png_set_strip_alpha @36
+ png_set_swap_alpha @37
+ png_set_invert_alpha @38
+ png_set_filler @39
+ png_set_add_alpha @40
+ png_set_swap @41
+ png_set_packing @42
+ png_set_packswap @43
+ png_set_shift @44
+ png_set_interlace_handling @45
+ png_set_invert_mono @46
+ png_set_background @47
+ png_set_strip_16 @48
+ png_set_quantize @49
+ png_set_gamma @50
+ png_set_flush @51
+ png_write_flush @52
+ png_start_read_image @53
+ png_read_update_info @54
+ png_read_rows @55
+ png_read_row @56
+ png_read_image @57
+ png_write_row @58
+ png_write_rows @59
+ png_write_image @60
+ png_write_end @61
+ png_read_end @62
+ png_destroy_info_struct @63
+ png_destroy_read_struct @64
+ png_destroy_write_struct @65
+ png_set_crc_action @66
+ png_set_filter @67
+ png_set_filter_heuristics @68
+ png_set_compression_level @69
+ png_set_compression_mem_level @70
+ png_set_compression_strategy @71
+ png_set_compression_window_bits @72
+ png_set_compression_method @73
+ png_init_io @74
+ png_set_error_fn @75
+ png_get_error_ptr @76
+ png_set_write_fn @77
+ png_set_read_fn @78
+ png_get_io_ptr @79
+ png_set_read_status_fn @80
+ png_set_write_status_fn @81
+ png_set_mem_fn @82
+ png_get_mem_ptr @83
+ png_set_read_user_transform_fn @84
+ png_set_write_user_transform_fn @85
+ png_set_user_transform_info @86
+ png_get_user_transform_ptr @87
+ png_set_read_user_chunk_fn @88
+ png_get_user_chunk_ptr @89
+ png_set_progressive_read_fn @90
+ png_get_progressive_ptr @91
+ png_process_data @92
+ png_progressive_combine_row @93
+ png_malloc @94
+ png_calloc @95
+ png_malloc_warn @96
+ png_free @97
+ png_free_data @98
+ png_data_freer @99
+ png_malloc_default @100
+ png_free_default @101
+ png_error @102
+ png_chunk_error @103
+ png_err @104
+ png_warning @105
+ png_chunk_warning @106
+ png_benign_error @107
+ png_chunk_benign_error @108
+ png_set_benign_errors @109
+ png_get_valid @110
+ png_get_rowbytes @111
+ png_get_rows @112
+ png_set_rows @113
+ png_get_channels @114
+ png_get_image_width @115
+ png_get_image_height @116
+ png_get_bit_depth @117
+ png_get_color_type @118
+ png_get_filter_type @119
+ png_get_interlace_type @120
+ png_get_compression_type @121
+ png_get_pixels_per_meter @122
+ png_get_x_pixels_per_meter @123
+ png_get_y_pixels_per_meter @124
+ png_get_pixel_aspect_ratio @125
+ png_get_x_offset_pixels @126
+ png_get_y_offset_pixels @127
+ png_get_x_offset_microns @128
+ png_get_y_offset_microns @129
+ png_get_signature @130
+ png_get_bKGD @131
+ png_set_bKGD @132
+ png_get_cHRM @133
+ png_get_cHRM_fixed @134
+ png_set_cHRM @135
+ png_set_cHRM_fixed @136
+ png_get_gAMA @137
+ png_get_gAMA_fixed @138
+ png_set_gAMA @139
+ png_set_gAMA_fixed @140
+ png_get_hIST @141
+ png_set_hIST @142
+ png_get_IHDR @143
+ png_set_IHDR @144
+ png_get_oFFs @145
+ png_set_oFFs @146
+ png_get_pCAL @147
+ png_set_pCAL @148
+ png_get_pHYs @149
+ png_set_pHYs @150
+ png_get_PLTE @151
+ png_set_PLTE @152
+ png_get_sBIT @153
+ png_set_sBIT @154
+ png_get_sRGB @155
+ png_set_sRGB @156
+ png_set_sRGB_gAMA_and_cHRM @157
+ png_get_iCCP @158
+ png_set_iCCP @159
+ png_get_sPLT @160
+ png_set_sPLT @161
+ png_get_text @162
+ png_set_text @163
+ png_get_tIME @164
+ png_set_tIME @165
+ png_get_tRNS @166
+ png_set_tRNS @167
+ png_get_sCAL @168
+ png_get_sCAL_s @169
+ png_set_sCAL @170
+ png_set_sCAL_s @171
+ png_set_keep_unknown_chunks @172
+ png_handle_as_unknown @173
+ png_set_unknown_chunks @174
+ png_set_unknown_chunk_location @175
+ png_get_unknown_chunks @176
+ png_set_invalid @177
+ png_read_png @178
+ png_write_png @179
+ png_get_copyright @180
+ png_get_header_ver @181
+ png_get_header_version @182
+ png_get_libpng_ver @183
+ png_permit_mng_features @184
+ png_set_strip_error_numbers @185
+ png_set_user_limits @186
+ png_get_user_width_max @187
+ png_get_user_height_max @188
+ png_set_chunk_cache_max @189
+ png_get_chunk_cache_max @190
+ png_set_chunk_malloc_max @191
+ png_get_chunk_malloc_max @192
+ png_get_pixels_per_inch @193
+ png_get_x_pixels_per_inch @194
+ png_get_y_pixels_per_inch @195
+ png_get_x_offset_inches @196
+ png_get_y_offset_inches @197
+ png_get_pHYs_dpi @198
+ png_get_io_state @199
+ png_get_io_chunk_name @200
+ png_get_uint_32 @201
+ png_get_uint_16 @202
+ png_get_int_32 @203
+ png_get_uint_31 @204
+ png_save_uint_32 @205
+ png_save_int_32 @206
+ png_save_uint_16 @207
+ png_set_gamma_fixed @208
+ png_set_filter_heuristics_fixed @209
+ png_get_pixel_aspect_ratio_fixed @210
+ png_get_x_offset_inches_fixed @211
+ png_get_y_offset_inches_fixed @212
+ png_set_sCAL_fixed @213
+ png_get_sCAL_fixed @214
+ png_set_background_fixed @215
+ png_get_io_chunk_type @216
+ png_get_current_row_number @217
+ png_get_current_pass_number @218
+ png_process_data_pause @219
+ png_process_data_skip @220
+ png_set_expand_16 @221
+ png_set_text_compression_level @222
+ png_set_text_compression_mem_level @223
+ png_set_text_compression_strategy @224
+ png_set_text_compression_window_bits @225
+ png_set_text_compression_method @226
+ png_set_alpha_mode @227
+ png_set_alpha_mode_fixed @228
+ png_set_scale_16 @229
+ png_get_cHRM_XYZ @230
+ png_get_cHRM_XYZ_fixed @231
+ png_set_cHRM_XYZ @232
+ png_set_cHRM_XYZ_fixed @233
diff --git a/scripts/symbols.dfn b/scripts/symbols.dfn
new file mode 100644
index 0000000..d790929
--- /dev/null
+++ b/scripts/symbols.dfn
@@ -0,0 +1,57 @@
+
+/* symbols.dfn - find all exported symbols
+ *
+ * Last changed in libpng version 1.5.0 [January 6, 2011]
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+/* NOTE: making 'symbols.chk' checks both that the exported
+ * symbols in the library don't change and (implicitly) that
+ * scripts/pnglibconf.h.prebuilt is as expected. If scripts/pnglibconf.h.prebuilt
+ * is remade using scripts/pnglibconf.dfa then this checks the
+ * .dfa file too.
+ */
+
+#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
+ PNG_DEFN_MAGIC-name @ordinal-PNG_DEFN_END
+#define PNG_REMOVED(ordinal, type, name, args, attributes)\
+ PNG_DEFN_MAGIC-; name @ordinal-PNG_DEFN_END
+#define PNG_EXPORT_LAST_ORDINAL(ordinal)\
+ PNG_DEFN_MAGIC-; @ordinal-PNG_DEFN_END
+
+/* Read the defaults, but use scripts/pnglibconf.h.prebuilt; the 'standard'
+ * header file.
+ */
+#include "pnglibconf.h.prebuilt"
+#include "../png.h"
+
+/* Some things are turned off by default. Turn these things
+ * on here (by hand) to get the APIs they expose and validate
+ * that no harm is done. This list is the set of options
+ * defaulted to 'off' in scripts/pnglibconf.dfa
+ *
+ * Maintenance: if scripts/pnglibconf.dfa options are changed
+ * from, or to, 'off' this needs updating!
+ */
+#define PNG_BENIGN_ERRORS_SUPPORTED
+#define PNG_ERROR_NUMBERS_SUPPORTED
+#define PNG_READ_BIG_ENDIAN_SUPPORTED /* should do nothing! */
+#define PNG_INCH_CONVERSIONS_SUPPORTED
+#define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+
+#undef PNG_H
+#include "../png.h"
+
+/* Finally there are a couple of places where option support
+ * actually changes the APIs revealed using a #if/#else/#endif
+ * test in png.h, test these here.
+ */
+#undef PNG_FLOATING_POINT_SUPPORTED /* Exposes 'fixed' APIs */
+#undef PNG_ERROR_TEXT_SUPPORTED /* Exposes unsupported APIs */
+
+#undef PNG_H
+#include "../png.h"
diff --git a/scripts/vers.dfn b/scripts/vers.dfn
new file mode 100644
index 0000000..89d5f38
--- /dev/null
+++ b/scripts/vers.dfn
@@ -0,0 +1,26 @@
+
+/* vers.dfn - define format of libpng.vers
+ *
+ * Last changed in libpng version 1.5.0 [January 6, 2011]
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#define HEADER PNG_DEFN_MAGIC-PNGLIB_LIBNAME {global:-PNG_DEFN_END
+
+/* NOTE: PNG_JOIN is interpreted by the calling script as a signal to
+ * join the two things on either side, so we can do symbol
+ * substitution within the name, regular C ## joins the pp-tokens,
+ * not their final values.
+ */
+#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
+ PNG_DEFN_MAGIC- SYMBOL_PREFIX PNG_JOIN name;-PNG_DEFN_END
+
+#define TRAILER PNG_DEFN_MAGIC-local: *; };-PNG_DEFN_END
+
+HEADER
+#include "../png.h"
+TRAILER
diff --git a/test-pngtest.sh b/test-pngtest.sh
index c134a8a..bba128b 100755
--- a/test-pngtest.sh
+++ b/test-pngtest.sh
@@ -1,3 +1,16 @@
#!/bin/sh
-./pngtest ${srcdir}/pngtest.png
+echo "Running tests. For details see pngtest-log.txt"
+
+echo "============ pngtest pngtest.png ==============" > pngtest-log.txt
+
+echo "Running test-pngtest.sh"
+if ./pngtest --strict ${srcdir}/pngtest.png >> pngtest-log.txt 2>&1
+then
+ echo " PASS: pngtest --strict pngtest.png"
+ err=0
+else
+ echo " FAIL: pngtest --strict pngtest.png"
+ err=1
+fi
+exit $err
diff --git a/test-pngvalid-full.sh b/test-pngvalid-full.sh
new file mode 100755
index 0000000..f7d1b2b
--- /dev/null
+++ b/test-pngvalid-full.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+#
+# Run a sequence of gamma tests quietly
+err=0
+
+echo >> pngtest-log.txt
+echo "============ pngvalid-full.sh ==============" >> pngtest-log.txt
+
+echo "Running test-pngvalid-full.sh"
+for gamma in threshold transform sbit 16-to-8 background alpha-mode "transform --expand16" "background --expand16" "alpha-mode --expand16"
+do
+ if ./pngvalid "$@" --gamma-$gamma >> pngtest-log.txt 2>&1
+ then
+ echo " PASS: pngvalid" "$@" "--gamma-$gamma"
+ else
+ echo " FAIL: pngvalid" "$@" "--gamma-$gamma"
+ err=1
+ fi
+done
+
+exit $err
diff --git a/test-pngvalid-simple.sh b/test-pngvalid-simple.sh
new file mode 100755
index 0000000..7d4d9d8
--- /dev/null
+++ b/test-pngvalid-simple.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+#
+# Run a sequence of tests quietly, without the slow
+# gamma tests
+err=0
+
+echo >> pngtest-log.txt
+echo "============ pngvalid-simple.sh ==============" >> pngtest-log.txt
+echo "Running test-pngvalid-simple.sh"
+# The options to test are:
+#
+# standard tests with and without progressive reading and interlace
+# size images with and without progressive reading
+# transform tests (standard, non-interlaced only)
+#
+for opts in "--standard" "--standard --progressive-read" \
+ "--standard --interlace" "--standard --progressive-read --interlace" \
+ "--size" "--size --progressive-read" \
+ "--transform"
+do
+ if ./pngvalid "$@" $opts >> pngtest-log.txt 2>&1
+ then
+ echo " PASS: pngvalid" "$@" $opts
+ else
+ echo " FAIL: pngvalid" "$@" $opts
+ err=1
+ fi
+done
+
+exit $err
