[libpng10] Imported from libpng-1.0.45.tar
diff --git a/ANNOUNCE b/ANNOUNCE
index 1a6b0e5..95fb970 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
-Libpng 1.0.44 - May 7, 2009
+Libpng 1.0.45 - June 4, 2009
This is a public release of libpng, intended for use in production codes.
@@ -8,63 +8,60 @@
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
- libpng-1.0.44.tar.gz
- libpng-1.0.44.tar.lzma
+ libpng-1.0.45.tar.gz
+ libpng-1.0.45.tar.lzma
(Get the lzma codec from <http://tukaani.org/lzma>).
- libpng-1.0.44.tar.bz2
+ libpng-1.0.45.tar.bz2
Source files with LF line endings (for Unix/Linux) without the
"configure" script
- libpng-1.0.44-no-config.tar.gz
- libpng-1.0.44-no-config.tar.lzma
- libpng-1.0.44-no-config.tar.bz2
+ libpng-1.0.45-no-config.tar.gz
+ libpng-1.0.45-no-config.tar.lzma
+ libpng-1.0.45-no-config.tar.bz2
Source files with CRLF line endings (for Windows), without the
"configure" script
- lpng1044.zip
- lpng1044.7z
- lpng1044.tar.bz2
+ lpng1045.zip
+ lpng1045.7z
+ lpng1045.tar.bz2
Project files
- libpng-1.0.44-project-netware.zip
- libpng-1.0.44-project-wince.zip
+ libpng-1.0.45-project-netware.zip
+ libpng-1.0.45-project-wince.zip
Other information:
- libpng-1.0.44-README.txt
- libpng-1.0.44-KNOWNBUGS.txt
- libpng-1.0.44-LICENSE.txt
- libpng-1.0.44-Y2K-compliance.txt
+ libpng-1.0.45-README.txt
+ libpng-1.0.45-KNOWNBUGS.txt
+ libpng-1.0.45-LICENSE.txt
+ libpng-1.0.45-Y2K-compliance.txt
-Changes since the last public release (1.0.43):
+Changes since the last public release (1.0.44):
-version 1.0.44 [May 7, 2009]
+version 1.0.45 [June 4, 2009]
- Revised comments in png_set_read_fn() and png_set_write_fn().
- Revised order of #ifdef's and indentation in png_debug definitions of png.h
- bug introduced in libpng-1.2.34.
- Use png_memset() after png_malloc() of big_row_buf when reading an
- interlaced file, to avoid a possible UMR.
- Undid recent revision of PNG_NO_STDIO version of png_write_flush(). Users
- having trouble with fflush() can build with PNG_NO_WRITE_FLUSH defined.
- Revised libpng*.txt documentation about use of png_write_flush().
- Removed fflush() from pngtest.c.
- Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
- Relocated misplaced PNG_1_0_X define in png.h that caused the prototype
- for png_set_strip_error_numbers() to be omitted from PNG_NO_ASSEMBLER_CODE
- builds. This bug was introduced in libpng-1.2.15beta4.
- Added a section on differences between 1.0.x and 1.2.x to libpng.3/libpng.txt
- Fixed potential memory leak of "new_name" in png_write_iCCP() (Ralph Giles)
- 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.
- 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.
+ Fixed inconsistency in pngrutil.c, introduced in libpng-1.2.36. The
+ memset() was using "png_ptr->rowbytes" instead of "row_bytes", which
+ the corresponding png_malloc() uses (Joe Drew).
+ Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri)
+ Updated some of the makefiles in the scripts directory.
+ Fixed typo in libpng documentation (FILTER_AVE should be FILTER_AVG)
+ Relocated misplaced #endif in pngwrite.c, sCAL chunk handler.
+ 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.
+ In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there
+ is only one makefile in those directories, and revised the README files
+ accordingly.
+ Reformated sources in libpng style (3-space indentation, comment format)
+ Added sections about the git repository and our coding style to the
+ documentation (merged from libpng-1.4.0beta62)
+ Added a section about using png_get_io_ptr() in configure scripts to detect
+ the presence of libpng.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
diff --git a/CHANGES b/CHANGES
index b90a4a0..eb60bf8 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2357,6 +2357,41 @@
version 1.0.44 and 1.2.36 [May 7, 2009]
No changes.
+version 1.2.37beta01 [May 14, 2009]
+ Fixed inconsistency in pngrutil.c, introduced in libpng-1.2.36. The
+ memset() was using "png_ptr->rowbytes" instead of "row_bytes", which
+ the corresponding png_malloc() uses (Joe Drew).
+ Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri)
+ Updated some of the makefiles in the scripts directory (merged with
+ those in libpng-1.4.0beta57).
+
+version 1.2.37beta02 [May 19, 2009]
+ Fixed typo in libpng documentation (FILTER_AVE should be FILTER_AVG)
+ Relocated misplaced #endif in pngwrite.c, sCAL chunk handler.
+ 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 1.2.37beta03 [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.
+ Reformated sources in libpng style (3-space indentation, comment format)
+
+version 1.2.37rc01 [May 27, 2009]
+ No changes.
+
+versions 1.2.37 and 1.0.45 [June 4, 2009]
+ Reformatted several remaining "else statement;" and "if () statment;" into
+ two lines.
+ 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
+ Added sections about the git repository and our coding style to the
+ documentation (merged from libpng-1.4.0beta62)
+ Added a section about using png_get_io_ptr() in configure scripts to detect
+ the presence of libpng.
+
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement
diff --git a/INSTALL b/INSTALL
index b173abe..e8cc519 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
-Installing libpng version 1.0.44 - May 7, 2009
+Installing libpng version 1.0.45 - June 4, 2009
On Unix/Linux and similar systems, you can simply type
@@ -44,7 +44,7 @@
correspond to the version of zlib that's installed.
You can rename the directories that you downloaded (they
-might be called "libpng-1.0.44" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.0.45" or "lpng109" and "zlib-1.2.1"
or "zlib121") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this:
@@ -101,9 +101,9 @@
CMakeLists.txt => "cmake" script
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning,
- gcc, creates libpng10.so.0.1.0.44)
+ gcc, creates libpng10.so.0.1.0.45)
makefile.linux => Linux/ELF makefile
- (gcc, creates libpng10.so.0.1.0.44)
+ (gcc, creates libpng10.so.0.1.0.45)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from
@@ -125,14 +125,14 @@
makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc,
- creates libpng10.so.0.1.0.44)
+ creates libpng10.so.0.1.0.45)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile (gcc,
- creates libpng10.so.0.1.0.44)
+ creates libpng10.so.0.1.0.45)
makefile.solaris-x86 => Solaris/intelMMX 2.X makefile (gcc,
- creates libpng10.so.0.1.0.44)
+ creates libpng10.so.0.1.0.45)
makefile.so9 => Solaris 9 makefile (gcc,
- creates libpng10.so.0.1.0.44)
+ creates libpng10.so.0.1.0.45)
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
diff --git a/KNOWNBUG b/KNOWNBUG
index cbe3500..8742623 100644
--- a/KNOWNBUG
+++ b/KNOWNBUG
@@ -1,5 +1,5 @@
-Known bugs in libpng version 1.0.44
+Known bugs in libpng version 1.0.45
1. February 23, 2006: The custom makefiles don't build libpng with -lz.
diff --git a/LICENSE b/LICENSE
index 3d88403..b10541f 100644
--- a/LICENSE
+++ b/LICENSE
@@ -8,7 +8,7 @@
If you modify libpng you may insert additional notices immediately following
this sentence.
-libpng versions 1.2.6, August 15, 2004, through 1.0.44, May 7, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.0.45, June 4, 2009, are
Copyright (c) 2004, 2006-2009 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
@@ -106,4 +106,4 @@
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
-May 7, 2009
+June 4, 2009
diff --git a/Makefile.am b/Makefile.am
index a79c7ff..fd4d616 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -86,7 +86,7 @@
${srcdir}/contrib/pngsuite/* \
${srcdir}/contrib/visupng/* \
$(TESTS) \
- example.c libpng-1.0.44.txt pngvcrd.c
+ example.c libpng-1.0.45.txt pngvcrd.c
CLEANFILES= pngout.png libpng10.pc libpng10-config libpng.vers \
libpng.sym
diff --git a/Makefile.in b/Makefile.in
index 09cfe1c..f1278e0 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -333,7 +333,7 @@
${srcdir}/contrib/pngsuite/* \
${srcdir}/contrib/visupng/* \
$(TESTS) \
- example.c libpng-1.0.44.txt pngvcrd.c
+ example.c libpng-1.0.45.txt pngvcrd.c
CLEANFILES = pngout.png libpng10.pc libpng10-config libpng.vers \
libpng.sym
diff --git a/README b/README
index 9963ce5..c40146b 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.0.44 - May 7, 2009 (shared library 10.0)
+README for libpng version 1.0.45 - June 4, 2009 (shared library 10.0)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.
@@ -194,11 +194,11 @@
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 libpng10.so.0.1.0.44)
+ gcc, creates libpng10.so.0.1.0.45)
makefile.linux => Linux/ELF makefile
- (gcc, creates libpng10.so.0.1.0.44)
+ (gcc, creates libpng10.so.0.1.0.45)
makefile.gcmmx => Linux/ELF makefile
- (gcc, creates libpng10.so.0.1.0.44,
+ (gcc, creates libpng10.so.0.1.0.45,
uses assembler code tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
@@ -220,12 +220,12 @@
makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics
- (gcc, creates libpng10.so.0.1.0.44)
+ (gcc, creates libpng10.so.0.1.0.45)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
- (gcc, creates libpng10.so.0.1.0.44)
+ (gcc, creates libpng10.so.0.1.0.45)
makefile.so9 => Solaris 9 makefile
- (gcc, creates libpng10.so.0.1.0.44)
+ (gcc, creates libpng10.so.0.1.0.45)
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
diff --git a/Y2KINFO b/Y2KINFO
index 702a2b2..a9493f6 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,13 +1,13 @@
Y2K compliance in libpng:
=========================
- May 7, 2009
+ June 4, 2009
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 1.0.44 are Y2K compliant. It is my belief that earlier
+ upward through 1.0.45 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
diff --git a/configure b/configure
index 9297b96..ba5c1fe 100755
--- a/configure
+++ b/configure
Binary files differ
diff --git a/configure.ac b/configure.ac
index 7fcd72a..669a2a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,15 +18,15 @@
dnl Version number stuff here:
-AC_INIT([libpng], [1.0.44], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.0.45], [png-mng-implement@lists.sourceforge.net])
AM_INIT_AUTOMAKE
dnl stop configure from automagically running automake
AM_MAINTAINER_MODE
-PNGLIB_VERSION=1.0.44
+PNGLIB_VERSION=1.0.45
PNGLIB_MAJOR=1
PNGLIB_MINOR=0
-PNGLIB_RELEASE=44
+PNGLIB_RELEASE=45
dnl End of version number stuff
diff --git a/example.c b/example.c
index 9447401..dcf38de 100644
--- a/example.c
+++ b/example.c
@@ -2,7 +2,7 @@
#if 0 /* in case someone actually tries to compile this */
/* example.c - an example of using libpng
- * Last changed in libpng 1.2.36 [May 7, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* This file has been placed in the public domain by the authors.
* Maintained 1998-2009 Glenn Randers-Pehrson
* Maintained 1996, 1997 Andreas Dilger)
@@ -91,14 +91,15 @@
if ((fp = fopen(file_name, "rb")) == NULL)
return (ERROR);
+
#else no_open_file /* prototype 2 */
-void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
+void read_png(FILE *fp, unsigned int sig_read) /* File is already open */
{
png_structp png_ptr;
png_infop info_ptr;
png_uint_32 width, height;
int bit_depth, color_type, interlace_type;
-#endif no_open_file /* only use one prototype! */
+#endif no_open_file /* Only use one prototype! */
/* Create and initialize the png_struct with the desired error handler
* functions. If you want to use the default stderr and longjump method,
@@ -164,6 +165,7 @@
* pixels) into the info structure with this call:
*/
png_read_png(png_ptr, info_ptr, png_transforms, png_voidp_NULL);
+
#else
/* OK, you're doing it the hard way, with the lower-level functions */
@@ -175,13 +177,13 @@
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
&interlace_type, int_p_NULL, int_p_NULL);
-/* Set up the data transformations you want. Note that these are all
- * optional. Only call them if you want/need them. Many of the
- * transformations only work on specific types of images, and many
- * are mutually exclusive.
- */
+ /* Set up the data transformations you want. Note that these are all
+ * optional. Only call them if you want/need them. Many of the
+ * transformations only work on specific types of images, and many
+ * 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 */
png_set_strip_16(png_ptr);
/* Strip alpha bytes from the input data without combining with the
@@ -228,10 +230,11 @@
png_set_background(png_ptr, &my_background,
PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
- /* Some suggestions as to how to get a screen gamma value */
-
- /* Note that screen gamma is the display_exponent, which includes
- * the CRT_exponent and any correction for viewing conditions */
+ /* Some suggestions as to how to get a screen gamma value
+ *
+ * Note that screen gamma is the display_exponent, which includes
+ * the CRT_exponent and any correction for viewing conditions
+ */
if (/* We have a user-defined screen gamma value */)
{
screen_gamma = user-defined screen_gamma;
@@ -244,7 +247,7 @@
/* If we don't have another value */
else
{
- screen_gamma = 2.2; /* A good guess for a PC monitors in a dimly
+ screen_gamma = 2.2; /* A good guess for a PC monitor in a dimly
lit room */
screen_gamma = 1.7 or 1.0; /* A good guess for Mac systems */
}
@@ -277,7 +280,7 @@
png_colorp palette;
/* This reduces the image to the application supplied palette */
- if (/* we have our own palette */)
+ if (/* We have our own palette */)
{
/* An array of colors to which the image should be dithered */
png_color std_color_cube[MAX_SCREEN_COLORS];
@@ -297,7 +300,7 @@
}
}
- /* invert monochrome files to have 0 as white and 1 as black */
+ /* Invert monochrome files to have 0 as white and 1 as black */
png_set_invert_mono(png_ptr);
/* If you want to shift the pixel values from the range [0,255] or
@@ -306,20 +309,20 @@
*/
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT))
{
- png_color_8p sig_bit;
+ png_color_8p sig_bit_p;
- png_get_sBIT(png_ptr, info_ptr, &sig_bit);
- png_set_shift(png_ptr, sig_bit);
+ png_get_sBIT(png_ptr, info_ptr, &sig_bit_p);
+ png_set_shift(png_ptr, sig_bit_p);
}
- /* flip the RGB pixels to BGR (or RGBA to BGRA) */
+ /* Flip the RGB pixels to BGR (or RGBA to BGRA) */
if (color_type & PNG_COLOR_MASK_COLOR)
png_set_bgr(png_ptr);
- /* 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) */
png_set_swap_alpha(png_ptr);
- /* swap bytes of 16 bit files to least significant byte first */
+ /* Swap bytes of 16 bit files to least significant byte first */
png_set_swap(png_ptr);
/* Add filler (or alpha) byte (before/after each RGB triplet) */
@@ -374,32 +377,31 @@
#else no_sparkle /* Read the image using the "rectangle" effect */
png_read_rows(png_ptr, png_bytepp_NULL, &row_pointers[y],
number_of_rows);
-#endif no_sparkle /* use only one of these two methods */
+#endif no_sparkle /* Use only one of these two methods */
}
- /* if you want to display the image after every pass, do
- so here */
-#endif no_single /* use only one of these two methods */
+ /* If you want to display the image after every pass, do so here */
+#endif no_single /* Use only one of these two methods */
}
-#endif no_entire /* use only one of these two methods */
+#endif no_entire /* Use only one of these two methods */
- /* read rest of file, and get additional chunks in info_ptr - REQUIRED */
+ /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
png_read_end(png_ptr, info_ptr);
#endif hilevel
/* At this point you have read the entire image */
- /* clean up after the read, and free any memory allocated - REQUIRED */
+ /* Clean up after the read, and free any memory allocated - REQUIRED */
png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
- /* close the file */
+ /* Close the file */
fclose(fp);
- /* that's it */
+ /* That's it */
return (OK);
}
-/* progressively read a file */
+/* Progressively read a file */
int
initialize_png_reader(png_structp *png_ptr, png_infop *info_ptr)
@@ -464,7 +466,7 @@
/* This one's new also. Simply give it chunks of data as
* they arrive from the data stream (in order, of course).
- * On Segmented machines, don't give it any more than 64K.
+ * On segmented 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, but I haven't tried with less
@@ -478,34 +480,35 @@
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.
- */
+ /* 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.
+ */
}
row_callback(png_structp png_ptr, png_bytep new_row,
png_uint_32 row_num, int pass)
{
-/*
- * This function is called for every row in the image. If the
- * image is interlaced, and you turned on the interlace handler,
- * this function will be called for every row in every pass.
- *
- * In this function you will receive a pointer to new row data from
- * libpng called new_row that is to replace a corresponding row (of
- * the same data format) in a buffer allocated by your application.
- *
- * The new row data pointer new_row may be NULL, indicating there is
- * no new data to be replaced (in cases of interlace loading).
- *
- * If new_row is not NULL then you need to call
- * png_progressive_combine_row() to replace the corresponding row as
- * shown below:
- */
+ /*
+ * This function is called for every row in the image. If the
+ * image is interlaced, and you turned on the interlace handler,
+ * this function will be called for every row in every pass.
+ *
+ * In this function you will receive a pointer to new row data from
+ * libpng called new_row that is to replace a corresponding row (of
+ * the same data format) in a buffer allocated by your application.
+ *
+ * The new row data pointer "new_row" may be NULL, indicating there is
+ * no new data to be replaced (in cases of interlace loading).
+ *
+ * If new_row is not NULL then you need to call
+ * png_progressive_combine_row() to replace the corresponding row as
+ * shown below:
+ */
+
/* Check if row_num is in bounds. */
if ((row_num >= 0) && (row_num < height))
{
@@ -520,44 +523,44 @@
if ((old_row != NULL) && (new_row != NULL))
png_progressive_combine_row(png_ptr, old_row, new_row);
}
-/*
- * 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.
- *
- * For the non-NULL rows of interlaced images, you must call
- * png_progressive_combine_row() passing in the new row and the
- * old row, as demonstrated above. You can call this function for
- * NULL rows (it will just return) and for non-interlaced images
- * (it just does the png_memcpy for you) if it will make the code
- * easier. Thus, you can just do this for all cases:
- */
+ /*
+ * 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.
+ *
+ * For the non-NULL rows of interlaced images, you must call
+ * png_progressive_combine_row() passing in the new row and the
+ * old row, as demonstrated above. You can call this function for
+ * NULL rows (it will just return) and for non-interlaced images
+ * (it just does the png_memcpy for you) if it will make the code
+ * easier. Thus, you can just do this for all cases:
+ */
png_progressive_combine_row(png_ptr, old_row, new_row);
-/* where old_row is what was displayed for previous rows. 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 as new_row, and the function will combine
- * the old row and the new row.
- */
+ /* where old_row is what was displayed for previous rows. 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 as new_row, and the function will combine
+ * the old row and the new row.
+ */
}
end_callback(png_structp png_ptr, png_infop info)
{
-/* this function is called when 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.
- */
+ /* This function is called when 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.
+ */
}
-/* write a png file */
+/* Write a png file */
void write_png(char *file_name /* , ... other image information ... */)
{
FILE *fp;
@@ -565,7 +568,7 @@
png_infop info_ptr;
png_colorp palette;
- /* open the file */
+ /* Open the file */
fp = fopen(file_name, "wb");
if (fp == NULL)
return (ERROR);
@@ -606,23 +609,27 @@
}
/* One of the following I/O initialization functions is REQUIRED */
+
#ifdef streams /* I/O initialization method 1 */
- /* set up the output control if you are using standard C streams */
+ /* Set up the output control if you are using standard C streams */
png_init_io(png_ptr, fp);
+
#else no_streams /* I/O initialization method 2 */
/* If you are using replacement write functions, instead of calling
- * png_init_io() here you would call */
+ * png_init_io() here you would call
+ */
png_set_write_fn(png_ptr, (void *)user_io_ptr, user_write_fn,
user_IO_flush_function);
/* where user_io_ptr is a structure you want available to the callbacks */
-#endif no_streams /* only use one initialization method */
+#endif no_streams /* Only use one initialization method */
#ifdef hilevel
/* This is the easy way. Use it if you already have all the
- * image info living info in the structure. You could "|" many
+ * image info living in the structure. You could "|" many
* PNG_TRANSFORM flags into the png_transforms integer here.
*/
png_write_png(png_ptr, info_ptr, png_transforms, png_voidp_NULL);
+
#else
/* This is the hard way */
@@ -637,25 +644,27 @@
png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, PNG_COLOR_TYPE_???,
PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
- /* set the palette if there is one. REQUIRED for indexed-color images */
+ /* Set the palette if there is one. REQUIRED for indexed-color images */
palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH
* png_sizeof(png_color));
- /* ... set palette colors ... */
+ /* ... Set palette colors ... */
png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH);
/* You must not free palette here, because png_set_PLTE only makes a link to
- the palette that you malloced. Wait until you are about to destroy
- the png structure. */
+ * the palette that you malloced. Wait until you are about to destroy
+ * the png structure.
+ */
- /* optional significant bit chunk */
- /* if we are dealing with a grayscale image then */
+ /* 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 */
+ /* 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 */
+ /* If the image has an alpha channel then */
sig_bit.alpha = true_alpha_bit_depth;
- png_set_sBIT(png_ptr, info_ptr, sig_bit);
+ png_set_sBIT(png_ptr, info_ptr, &sig_bit);
/* Optional gamma chunk is strongly suggested if you have any guess
@@ -680,9 +689,12 @@
#endif
png_set_text(png_ptr, info_ptr, text_ptr, 3);
- /* other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs, */
- /* note that if sRGB is present the gAMA and cHRM chunks must be ignored
- * on read and must be written in accordance with the sRGB profile */
+ /* Other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs */
+
+ /* Note that if sRGB is present the gAMA and cHRM chunks must be ignored
+ * on read and, if your application chooses to write them, they must
+ * be written in accordance with the sRGB profile
+ */
/* Write the file header information. REQUIRED */
png_write_info(png_ptr, info_ptr);
@@ -704,11 +716,11 @@
* at the end.
*/
- /* set up the transformations you want. Note that these are
+ /* Set up the transformations you want. Note that these are
* all optional. Only call them if you want them.
*/
- /* invert monochrome pixels */
+ /* Invert monochrome pixels */
png_set_invert_mono(png_ptr);
/* Shift the pixels up to a legal bit depth and fill in
@@ -716,10 +728,10 @@
*/
png_set_shift(png_ptr, &sig_bit);
- /* pack pixels into bytes */
+ /* Pack pixels into bytes */
png_set_packing(png_ptr);
- /* swap location of alpha bytes from ARGB to RGBA */
+ /* Swap location of alpha bytes from ARGB to RGBA */
png_set_swap_alpha(png_ptr);
/* Get rid of filler (OR ALPHA) bytes, pack XRGB/RGBX/ARGB/RGBA into
@@ -727,16 +739,16 @@
*/
png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
- /* flip BGR pixels to RGB */
+ /* Flip BGR pixels to RGB */
png_set_bgr(png_ptr);
- /* swap bytes of 16-bit files to most significant byte first */
+ /* Swap bytes of 16-bit files to most significant byte first */
png_set_swap(png_ptr);
- /* swap bits of 1, 2, 4 bit packed pixel formats */
+ /* Swap bits of 1, 2, 4 bit packed pixel formats */
png_set_packswap(png_ptr);
- /* turn on interlace handling if you are not using png_write_image() */
+ /* Turn on interlace handling if you are not using png_write_image() */
if (interlacing)
number_passes = png_set_interlace_handling(png_ptr);
else
@@ -757,12 +769,14 @@
row_pointers[k] = image + k*width*bytes_per_pixel;
/* One of the following output methods is REQUIRED */
-#ifdef entire /* write out the entire image data in one call */
+
+#ifdef entire /* Write out the entire image data in one call */
png_write_image(png_ptr, row_pointers);
- /* the other way to write the image - deal with interlacing */
+ /* The other way to write the image - deal with interlacing */
-#else no_entire /* write out the image data by one or more scanlines */
+#else no_entire /* Write out the image data by one or more scanlines */
+
/* The number of passes is either 1 for non-interlaced images,
* or 7 for interlaced images.
*/
@@ -775,10 +789,10 @@
for (y = 0; y < height; y++)
png_write_rows(png_ptr, &row_pointers[y], 1);
}
-#endif no_entire /* use only one output method */
+#endif no_entire /* Use only one output method */
/* You can write optional chunks like tEXt, zTXt, and tIME at the end
- * as well. Shouldn't be necessary in 1.1.0 and up as all the public
+ * as well. Shouldn't be necessary in 1.2.0 and up as all the public
* chunks are supported and you can use png_set_unknown_chunks() to
* register unknown chunks into the info structure to be written out.
*/
@@ -788,26 +802,33 @@
#endif hilevel
/* If you png_malloced a palette, free it here (don't free info_ptr->palette,
- as recommended in versions 1.0.5m and earlier of this example; if
- libpng mallocs info_ptr->palette, libpng will free it). If you
- allocated it with malloc() instead of png_malloc(), use free() instead
- of png_free(). */
+ * as recommended in versions 1.0.5m and earlier of this example; if
+ * libpng mallocs info_ptr->palette, libpng will free it). If you
+ * allocated it with malloc() instead of png_malloc(), use free() instead
+ * of png_free().
+ */
png_free(png_ptr, palette);
palette = NULL;
/* Similarly, if you png_malloced any data that you passed in with
- png_set_something(), such as a hist or trans array, free it here,
- when you can be sure that libpng is through with it. */
+ * png_set_something(), such as a hist or trans array, free it here,
+ * when you can be sure that libpng is through with it.
+ */
png_free(png_ptr, trans);
trans = NULL;
+ /* Whenever you use png_free() it is a good idea to set the pointer to
+ * NULL in case your application inadvertently tries to png_free() it
+ * again. When png_free() sees a NULL it returns without action, thus
+ * avoiding the double-free security problem.
+ */
- /* 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, &info_ptr);
- /* close the file */
+ /* Close the file */
fclose(fp);
- /* that's it */
+ /* That's it */
return (OK);
}
diff --git a/libpng-1.0.44.txt b/libpng-1.0.45.txt
similarity index 97%
rename from libpng-1.0.44.txt
rename to libpng-1.0.45.txt
index 420661f..17ef693 100644
--- a/libpng-1.0.44.txt
+++ b/libpng-1.0.45.txt
@@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng
- libpng version 1.0.44 - May 7, 2009
+ libpng version 1.0.45 - June 4, 2009
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -9,7 +9,7 @@
Based on:
- libpng versions 0.97, January 1998, through 1.0.44 - May 7, 2009
+ libpng versions 0.97, January 1998, through 1.0.45 - June 4, 2009
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -1667,7 +1667,7 @@
PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE |
PNG_FILTER_SUB | PNG_FILTER_VALUE_SUB |
PNG_FILTER_UP | PNG_FILTER_VALUE_UP |
- PNG_FILTER_AVE | PNG_FILTER_VALUE_AVE |
+ PNG_FILTER_AVG | PNG_FILTER_VALUE_AVG |
PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH|
PNG_ALL_FILTERS);
@@ -2631,7 +2631,7 @@
is called for the first time.)
filters = PNG_FILTER_NONE | PNG_FILTER_SUB
- PNG_FILTER_UP | PNG_FILTER_AVE |
+ PNG_FILTER_UP | PNG_FILTER_AVG |
PNG_FILTER_PAETH | PNG_ALL_FILTERS;
png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
@@ -2829,15 +2829,128 @@
VIII. (Omitted).
IX. (Omitted)
-X. Y2K Compliance in libpng
-May 7, 2009
+X. 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.
+
+XI. 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
+
+XII. 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.
+
+Comments appear with the leading "/*" at the same indentation as
+the statement that follows the comment:
+
+ /* Single-line comment */
+ statement;
+
+ /* Multiple-line
+ * comment
+ */
+ statement;
+
+Very short comments can be placed at 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 brackets are not indented, and
+exported functions are marked with PNGAPI:
+
+ /* This is a public function that is visible to
+ * application programers. 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.
+
+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 can appear in
+pngpriv.h or in the file where the function is located.
+
+The names of all exported functions and variables begin
+with "png_", and all publicly visible C preprocessor
+macros begin with "PNG_".
+
+We put a space after each comma and after each semicolon
+in "for" statments, and we put spaces before and after each
+C binary operator and after "for" or "while". 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)
+ x[i] = a(x) + (int)b;
+
+Other rules can be inferred by inspecting the libpng
+source.
+
+XIII. Y2K Compliance in libpng
+
+June 4, 2009
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 1.0.44 are Y2K compliant. It is my belief that earlier
+upward through 1.0.45 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
diff --git a/libpng.3 b/libpng.3
index d8c9028..77b8d2d 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,404 +1,815 @@
-.TH LIBPNG 3 "May 7, 2009"
+.TH LIBPNG 3 "June 4, 2009"
.SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.44
+libpng \- Portable Network Graphics (PNG) Reference Library 1.0.45
.SH SYNOPSIS
-\fB
-#include <png.h>\fP
+\fI\fB
+
+\fB#include <png.h>\fP
+
+\fI\fB
\fBpng_uint_32 png_access_version_number \fI(void\fP\fB);\fP
+\fI\fB
+
\fBint png_check_sig (png_bytep \fP\fIsig\fP\fB, int \fInum\fP\fB);\fP
+\fI\fB
+
\fBvoid png_chunk_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
+\fI\fB
+
\fBvoid png_chunk_warning (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fImessage\fP\fB);\fP
+\fI\fB
+
\fBvoid png_convert_from_struct_tm (png_timep \fP\fIptime\fP\fB, struct tm FAR * \fIttime\fP\fB);\fP
+\fI\fB
+
\fBvoid png_convert_from_time_t (png_timep \fP\fIptime\fP\fB, time_t \fIttime\fP\fB);\fP
+\fI\fB
+
\fBpng_charp png_convert_to_rfc1123 (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fIptime\fP\fB);\fP
+\fI\fB
+
\fBpng_infop png_create_info_struct (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_structp png_create_read_struct (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarn_fn\fP\fB);\fP
+\fI\fB
+
\fBpng_structp png_create_read_struct_2(png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fP\fIwarn_fn\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
+\fI\fB
+
\fBpng_structp png_create_write_struct (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarn_fn\fP\fB);\fP
+\fI\fB
+
\fBpng_structp png_create_write_struct_2(png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fP\fIwarn_fn\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
+\fI\fB
+
\fBint png_debug(int \fP\fIlevel\fP\fB, png_const_charp \fImessage\fP\fB);\fP
+\fI\fB
+
\fBint png_debug1(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fIp1\fP\fB);\fP
+\fI\fB
+
\fBint png_debug2(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fP\fIp1\fP\fB, \fIp2\fP\fB);\fP
+\fI\fB
+
\fBvoid png_destroy_info_struct (png_structp \fP\fIpng_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_destroy_read_struct (png_structpp \fP\fIpng_ptr_ptr\fP\fB, png_infopp \fP\fIinfo_ptr_ptr\fP\fB, png_infopp \fIend_info_ptr_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_destroy_write_struct (png_structpp \fP\fIpng_ptr_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
+\fI\fB
+
\fBvoid png_free (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fIptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_free_chunk_list (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_free_default(png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fIptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_free_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fInum\fP\fB);\fP
+\fI\fB
+
\fBpng_byte png_get_bit_depth (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_16p \fI*background\fP\fB);\fP
+\fI\fB
+
\fBpng_byte png_get_channels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fI*white_x\fP\fB, double \fP\fI*white_y\fP\fB, double \fP\fI*red_x\fP\fB, double \fP\fI*red_y\fP\fB, double \fP\fI*green_x\fP\fB, double \fP\fI*green_y\fP\fB, double \fP\fI*blue_x\fP\fB, double \fI*blue_y\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*white_x\fP\fB, png_uint_32 \fP\fI*white_y\fP\fB, png_uint_32 \fP\fI*red_x\fP\fB, png_uint_32 \fP\fI*red_y\fP\fB, png_uint_32 \fP\fI*green_x\fP\fB, png_uint_32 \fP\fI*green_y\fP\fB, png_uint_32 \fP\fI*blue_x\fP\fB, png_uint_32 \fI*blue_y\fP\fB);\fP
+\fI\fB
+
\fBpng_byte png_get_color_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_byte png_get_compression_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_byte png_get_copyright (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_voidp png_get_error_ptr (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_byte png_get_filter_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fI*file_gamma\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fI*int_file_gamma\fP\fB);\fP
+\fI\fB
+
\fBpng_byte png_get_header_ver (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_byte png_get_header_version (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fI*hist\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charpp \fP\fIname\fP\fB, int \fP\fI*compression_type\fP\fB, png_charpp \fP\fIprofile\fP\fB, png_uint_32 \fI*proflen\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*width\fP\fB, png_uint_32 \fP\fI*height\fP\fB, int \fP\fI*bit_depth\fP\fB, int \fP\fI*color_type\fP\fB, int \fP\fI*interlace_type\fP\fB, int \fP\fI*compression_type\fP\fB, int \fI*filter_type\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_image_height (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_image_width (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
-\fB#if !defined(PNG_1_0_X) png_int_32 png_get_int_32 (png_bytep buf); \fI#endif
+\fI\fB
+
+\fB#if \fI!defined(PNG_1_0_X)
+
+\fBpng_int_32 png_get_int_32 (png_bytep \fIbuf\fP\fB);\fP
+
+\fI\fB#endif
+
+\fI\fB
\fBpng_byte png_get_interlace_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_voidp png_get_io_ptr (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_byte png_get_libpng_ver (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_voidp png_get_mem_ptr(png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*offset_x\fP\fB, png_uint_32 \fP\fI*offset_y\fP\fB, int \fI*unit_type\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fI*purpose\fP\fB, png_int_32 \fP\fI*X0\fP\fB, png_int_32 \fP\fI*X1\fP\fB, int \fP\fI*type\fP\fB, int \fP\fI*nparams\fP\fB, png_charp \fP\fI*units\fP\fB, png_charpp \fI*params\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*res_x\fP\fB, png_uint_32 \fP\fI*res_y\fP\fB, int \fI*unit_type\fP\fB);\fP
+\fI\fB
+
\fBfloat png_get_pixel_aspect_ratio (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_voidp png_get_progressive_ptr (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_colorp \fP\fI*palette\fP\fB, int \fI*num_palette\fP\fB);\fP
-\fBpng_byte png_get_rgb_to_gray_status (png_structp png_ptr) png_uint_32 png_get_rowbytes (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fBpng_byte png_get_rgb_to_gray_status (png_structp \fIpng_ptr)
+
+\fBpng_uint_32 png_get_rowbytes (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
\fBpng_bytepp png_get_rows (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_8p \fI*sig_bit\fP\fB);\fP
+\fI\fB
+
\fBpng_bytep png_get_signature (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_spalette_p \fI*splt_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fI*intent\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_text (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fI*text_ptr\fP\fB, int \fI*num_text\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_timep \fI*mod_time\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fI*trans\fP\fB, int \fP\fI*num_trans\fP\fB, png_color_16p \fI*trans_values\fP\fB);\fP
-\fB#if !defined(PNG_1_0_X) png_uint_16 png_get_uint_16 (png_bytep \fIbuf\fP\fB);\fP
+\fI\fB
+
+\fB#if \fI!defined(PNG_1_0_X)
+
+\fBpng_uint_16 png_get_uint_16 (png_bytep \fIbuf\fP\fB);\fP
+
+\fI\fB
\fBpng_uint_32 png_get_uint_31 (png_bytep \fIbuf\fP\fB);\fP
-\fBpng_uint_32 png_get_uint_32 (png_bytep buf); \fI#endif
+\fI\fB
+
+\fBpng_uint_32 png_get_uint_32 (png_bytep \fIbuf\fP\fB);\fP
+
+\fI\fB#endif
+
+\fI\fB
\fBpng_uint_32 png_get_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_unknown_chunkpp \fIunknowns\fP\fB);\fP
+\fI\fB
+
\fBpng_voidp png_get_user_chunk_ptr (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_user_height_max( png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_voidp png_get_user_transform_ptr (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_user_width_max (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_valid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIflag\fP\fB);\fP
+\fI\fB
+
\fBpng_int_32 png_get_x_offset_microns (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_int_32 png_get_x_offset_pixels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_x_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_int_32 png_get_y_offset_microns (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_int_32 png_get_y_offset_pixels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_y_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_get_compression_buffer_size (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBint png_handle_as_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
+\fI\fB
+
\fBvoid png_init_io (png_structp \fP\fIpng_ptr\fP\fB, FILE \fI*fp\fP\fB);\fP
+\fI\fB
+
\fBDEPRECATED: void png_info_init (png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBDEPRECATED: void png_info_init_2 (png_infopp \fP\fIptr_ptr\fP\fB, png_size_t \fIpng_info_struct_size\fP\fB);\fP
+\fI\fB
+
\fBpng_voidp png_malloc (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
+\fI\fB
+
\fBpng_voidp png_malloc_default(png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
+\fI\fB
+
\fBvoidp png_memcpy (png_voidp \fP\fIs1\fP\fB, png_voidp \fP\fIs2\fP\fB, png_size_t \fIsize\fP\fB);\fP
+\fI\fB
+
\fBpng_voidp png_memcpy_check (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIs1\fP\fB, png_voidp \fP\fIs2\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
+\fI\fB
+
\fBvoidp png_memset (png_voidp \fP\fIs1\fP\fB, int \fP\fIvalue\fP\fB, png_size_t \fIsize\fP\fB);\fP
+\fI\fB
+
\fBpng_voidp png_memset_check (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIs1\fP\fB, int \fP\fIvalue\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
+\fI\fB
+
\fBDEPRECATED: void png_permit_empty_plte (png_structp \fP\fIpng_ptr\fP\fB, int \fIempty_plte_permitted\fP\fB);\fP
+\fI\fB
+
\fBvoid png_process_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_size\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
+
\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_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_read_image (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fIimage\fP\fB);\fP
+\fI\fB
+
\fBDEPRECATED: void png_read_init (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBDEPRECATED: void png_read_init_2 (png_structpp \fP\fIptr_ptr\fP\fB, png_const_charp \fP\fIuser_png_ver\fP\fB, png_size_t \fP\fIpng_struct_size\fP\fB, png_size_t \fIpng_info_size\fP\fB);\fP
+\fI\fB
+
\fBvoid png_read_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_read_png (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fItransforms\fP\fB, png_voidp \fIparams\fP\fB);\fP
+\fI\fB
+
\fBvoid png_read_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fIdisplay_row\fP\fB);\fP
+\fI\fB
+
\fBvoid png_read_rows (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fP\fIrow\fP\fB, png_bytepp \fP\fIdisplay_row\fP\fB, png_uint_32 \fInum_rows\fP\fB);\fP
+\fI\fB
+
\fBvoid png_read_update_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
-\fB#if !defined(PNG_1_0_X) png_save_int_32 (png_bytep \fP\fIbuf\fP\fB, png_int_32 \fIi\fP\fB);\fP
+\fI\fB
+
+\fB#if \fI!defined(PNG_1_0_X)
+
+\fBpng_save_int_32 (png_bytep \fP\fIbuf\fP\fB, png_int_32 \fIi\fP\fB);\fP
+
+\fI\fB
\fBvoid png_save_uint_16 (png_bytep \fP\fIbuf\fP\fB, unsigned int \fIi\fP\fB);\fP
+\fI\fB
+
\fBvoid png_save_uint_32 (png_bytep \fP\fIbuf\fP\fB, png_uint_32 \fIi\fP\fB);\fP
-\fBvoid png_set_add_alpha (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int flags); \fI#endif
+\fI\fB
+
+\fBvoid png_set_add_alpha (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP
+
+\fI\fB#endif
+
+\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
+
\fBvoid png_set_bgr (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_16p \fIbackground\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_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
+
\fBvoid png_set_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_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
+
\fBvoid png_set_compression_level (png_structp \fP\fIpng_ptr\fP\fB, int \fIlevel\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_compression_mem_level (png_structp \fP\fIpng_ptr\fP\fB, int \fImem_level\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_compression_method (png_structp \fP\fIpng_ptr\fP\fB, int \fImethod\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_compression_strategy (png_structp \fP\fIpng_ptr\fP\fB, int \fIstrategy\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_compression_window_bits (png_structp \fP\fIpng_ptr\fP\fB, int \fIwindow_bits\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_crc_action (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcrit_action\fP\fB, int \fIancil_action\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_dither (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fP\fInum_palette\fP\fB, int \fP\fImaximum_colors\fP\fB, png_uint_16p \fP\fIhistogram\fP\fB, int \fIfull_dither\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_error_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarning_fn\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_expand (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
+
\fBvoid png_set_filler (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_filter (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fImethod\fP\fB, int \fIfilters\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_filter_heuristics (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIheuristic_method\fP\fB, int \fP\fInum_weights\fP\fB, png_doublep \fP\fIfilter_weights\fP\fB, png_doublep \fIfilter_costs\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_flush (png_structp \fP\fIpng_ptr\fP\fB, int \fInrows\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_gamma (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIscreen_gamma\fP\fB, double \fIdefault_file_gamma\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIfile_gamma\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_gray_1_2_4_to_8(png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_gray_to_rgb (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fIhist\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, png_uint_32 \fIproflen\fP\fB);\fP
+\fI\fB
+
\fBint png_set_interlace_handling (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_invalid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fImask\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_invert_alpha (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_invert_mono (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_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
+\fI\fB
+
\fBvoid png_set_keep_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIkeep\fP\fB, png_bytep \fP\fIchunk_list\fP\fB, int \fInum_chunks\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_mem_fn(png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIoffset_x\fP\fB, png_uint_32 \fP\fIoffset_y\fP\fB, int \fIunit_type\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_packing (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_packswap (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_palette_to_rgb(png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_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
+
\fBvoid png_set_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIres_x\fP\fB, png_uint_32 \fP\fIres_y\fP\fB, int \fIunit_type\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_progressive_read_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIprogressive_ptr\fP\fB, png_progressive_info_ptr \fP\fIinfo_fn\fP\fB, png_progressive_row_ptr \fP\fIrow_fn\fP\fB, png_progressive_end_ptr \fIend_fn\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_read_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIio_ptr\fP\fB, png_rw_ptr \fIread_data_fn\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_read_status_fn (png_structp \fP\fIpng_ptr\fP\fB, png_read_status_ptr \fIread_row_fn\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_read_user_transform_fn (png_structp \fP\fIpng_ptr\fP\fB, png_user_transform_ptr \fIread_user_transform_fn\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_rgb_to_gray (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIerror_action\fP\fB, double \fP\fIred\fP\fB, double \fIgreen\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_rgb_to_gray_fixed (png_structp \fP\fIpng_ptr\fP\fB, int error_action png_fixed_point \fP\fIred\fP\fB, png_fixed_point \fIgreen\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_rows (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytepp \fIrow_pointers\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_8p \fIsig_bit\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\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
+
\fBvoid png_set_sig_bytes (png_structp \fP\fIpng_ptr\fP\fB, int \fInum_bytes\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_spalette_p \fP\fIsplt_ptr\fP\fB, int \fInum_spalettes\fP\fB);\fP
+\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
+\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
+\fI\fB
+
\fBvoid png_set_strip_16 (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_strip_alpha (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_swap (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_swap_alpha (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_text (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
+
\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
+
\fBvoid png_set_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fP\fInum_trans\fP\fB, png_color_16p \fItrans_values\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_tRNS_to_alpha(png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBpng_uint_32 png_set_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_unknown_chunkp \fP\fIunknowns\fP\fB, int \fP\fInum\fP\fB, int \fIlocation\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_unknown_chunk_location(png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fIchunk\fP\fB, int \fIlocation\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_read_user_chunk_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_chunk_ptr\fP\fB, png_user_chunk_ptr \fIread_user_chunk_fn\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_user_limits (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIuser_width_max\fP\fB, png_uint_32 \fIuser_height_max\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_user_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_transform_ptr\fP\fB, int \fP\fIuser_transform_depth\fP\fB, int \fIuser_transform_channels\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_write_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIio_ptr\fP\fB, png_rw_ptr \fP\fIwrite_data_fn\fP\fB, png_flush_ptr \fIoutput_flush_fn\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_write_status_fn (png_structp \fP\fIpng_ptr\fP\fB, png_write_status_ptr \fIwrite_row_fn\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_write_user_transform_fn (png_structp \fP\fIpng_ptr\fP\fB, png_user_transform_ptr \fIwrite_user_transform_fn\fP\fB);\fP
+\fI\fB
+
\fBvoid png_set_compression_buffer_size(png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
+\fI\fB
+
\fBint png_sig_cmp (png_bytep \fP\fIsig\fP\fB, png_size_t \fP\fIstart\fP\fB, png_size_t \fInum_to_check\fP\fB);\fP
+\fI\fB
+
\fBvoid png_start_read_image (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_warning (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fImessage\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIchunk_name\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_chunk_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_chunk_end (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_chunk_start (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIchunk_name\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_destroy (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_flush (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_image (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fIimage\fP\fB);\fP
+\fI\fB
+
\fBDEPRECATED: void png_write_init (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
\fBDEPRECATED: void png_write_init_2 (png_structpp \fP\fIptr_ptr\fP\fB, png_const_charp \fP\fIuser_png_ver\fP\fB, png_size_t \fP\fIpng_struct_size\fP\fB, png_size_t \fIpng_info_size\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_info_before_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_png (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fItransforms\fP\fB, png_voidp \fIparams\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
\fBvoid png_write_rows (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fP\fIrow\fP\fB, png_uint_32 \fInum_rows\fP\fB);\fP
+\fI\fB
+
\fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP
+\fI\fB
+
\fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP
+\fI\fB
+
.SH DESCRIPTION
The
.I libpng
@@ -410,7 +821,7 @@
.SH LIBPNG.TXT
libpng.txt - A description on how to use and modify libpng
- libpng version 1.0.44 - May 7, 2009
+ libpng version 1.0.45 - June 4, 2009
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -419,7 +830,7 @@
Based on:
- libpng versions 0.97, January 1998, through 1.0.44 - May 7, 2009
+ libpng versions 0.97, January 1998, through 1.0.45 - June 4, 2009
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -2077,7 +2488,7 @@
PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE |
PNG_FILTER_SUB | PNG_FILTER_VALUE_SUB |
PNG_FILTER_UP | PNG_FILTER_VALUE_UP |
- PNG_FILTER_AVE | PNG_FILTER_VALUE_AVE |
+ PNG_FILTER_AVG | PNG_FILTER_VALUE_AVG |
PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH|
PNG_ALL_FILTERS);
@@ -3041,7 +3452,7 @@
is called for the first time.)
filters = PNG_FILTER_NONE | PNG_FILTER_SUB
- PNG_FILTER_UP | PNG_FILTER_AVE |
+ PNG_FILTER_UP | PNG_FILTER_AVG |
PNG_FILTER_PAETH | PNG_ALL_FILTERS;
png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
@@ -3239,15 +3650,128 @@
.SH VIII. (Omitted).
.SH IX. (Omitted)
-.SH X. Y2K Compliance in libpng
-May 7, 2009
+.SH X. 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.
+
+.SH XI. 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
+
+.SH XII. 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.
+
+Comments appear with the leading "/*" at the same indentation as
+the statement that follows the comment:
+
+ /* Single-line comment */
+ statement;
+
+ /* Multiple-line
+ * comment
+ */
+ statement;
+
+Very short comments can be placed at 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 brackets are not indented, and
+exported functions are marked with PNGAPI:
+
+ /* This is a public function that is visible to
+ * application programers. 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.
+
+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 can appear in
+pngpriv.h or in the file where the function is located.
+
+The names of all exported functions and variables begin
+with "png_", and all publicly visible C preprocessor
+macros begin with "PNG_".
+
+We put a space after each comma and after each semicolon
+in "for" statments, and we put spaces before and after each
+C binary operator and after "for" or "while". 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)
+ x[i] = a(x) + (int)b;
+
+Other rules can be inferred by inspecting the libpng
+source.
+
+.SH XIII. Y2K Compliance in libpng
+
+June 4, 2009
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 1.0.44 are Y2K compliant. It is my belief that earlier
+upward through 1.0.45 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
@@ -3513,6 +4037,9 @@
1.2.36rc01 13 10236 12.so.0.36[.0]
1.0.44 10 10044 10.so.0.44[.0]
1.2.36 13 10236 12.so.0.36[.0]
+ 1.2.37beta01-03 13 10237 12.so.0.37[.0]
+ 1.2.37rc01 13 10237 12.so.0.37[.0]
+ 1.2.37 13 10237 12.so.0.37[.0]
Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be
@@ -3568,7 +4095,7 @@
Thanks to Frank J. T. Wojcik for helping with the documentation.
-Libpng version 1.0.44 - May 7, 2009:
+Libpng version 1.0.45 - June 4, 2009:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@@ -3589,7 +4116,7 @@
If you modify libpng you may insert additional notices immediately following
this sentence.
-libpng versions 1.2.6, August 15, 2004, through 1.0.44, May 7, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.0.45, June 4, 2009, are
Copyright (c) 2004,2006-2008 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
@@ -3688,7 +4215,7 @@
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
-May 7, 2009
+June 4, 2009
.\" end of man page
diff --git a/libpngpf.3 b/libpngpf.3
index b11d56a..5bda87c 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,268 +1,782 @@
-.TH LIBPNGPF 3 "May 7, 2009"
+.TH LIBPNGPF 3 "June 4, 2009"
.SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.44
+libpng \- Portable Network Graphics (PNG) Reference Library 1.0.45
(private functions)
.SH SYNOPSIS
\fB#include <png.h>\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_build_gamma_table (png_structp \fIpng_ptr\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
+
+\fI\fB
+
\fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fImask\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_correct_palette (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBint png_crc_error (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBint png_crc_finish (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIskip\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_crc_read (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuf\fP\fB, png_size_t \fIlength\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBpng_voidp png_create_struct (int \fItype\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_decompress_chunk (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcomp_type\fP\fB, png_charp \fP\fIchunkdata\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_destroy_struct (png_voidp \fIstruct_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_background (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fP\fItrans_values\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_bgr (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_chop (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_dither (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIpalette_lookup\fP\fB, png_bytep \fIdither_lookup\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_gray_to_rgb (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_invert (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_packswap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_read_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_read_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBint png_do_rgb_to_gray (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_swap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_unpack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_write_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fIpass\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_write_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_write_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_do_write_transformations (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid *png_far_to_near (png_structp png_ptr,png_voidp \fP\fIptr\fP\fB, int \fIcheck\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_flush (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_info_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_init_mmx_flags (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_init_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_process_some_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_check_crc (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_crc_finish (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_crc_skip (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\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
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_have_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_have_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_have_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_process_row (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_read_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_read_IDAT (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_read_sig (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_read_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_push_read_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\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
+
\fBpng_uint_32 png_read_chunk_header (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
+
+\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
+
+\fI\fB
+
\fBvoid png_read_push_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_read_start_row (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_read_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fI\fB
+
\fBvoid png_reset_crc (png_structp \fIpng_ptr\fP\fB);\fP
+\fI\fB
+
+\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
+
+\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_sig (png_structp \fIpng_ptr\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
+\fI\fB
+
.SH DESCRIPTION
The functions listed above are used privately by libpng
and are not recommended for use by applications. They are
diff --git a/png.5 b/png.5
index ae0f2e5..2f73daf 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "May 7, 2009"
+.TH PNG 5 "June 4, 2009"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION
diff --git a/png.c b/png.c
index 9fa20e0..9f0014b 100644
--- a/png.c
+++ b/png.c
@@ -1,9 +1,9 @@
/* png.c - location for general purpose libpng functions
*
- * Last changed in libpng 1.2.34 [December 18, 2008]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2009 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.)
*/
@@ -13,7 +13,7 @@
#include "png.h"
/* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_44 Your_png_h_is_not_version_1_0_44;
+typedef version_1_0_45 Your_png_h_is_not_version_1_0_45;
/* Version information for C files. This had better match the version
* string defined in png.h. */
@@ -53,18 +53,18 @@
PNG_zTXt;
#ifdef PNG_READ_SUPPORTED
-/* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
-/* start of interlace block */
+/* Start of interlace block */
PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
-/* offset to next interlace block */
+/* Offset to next interlace block */
PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
-/* start of interlace block in the y direction */
+/* Start of interlace block in the y direction */
PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
-/* offset to next interlace block in the y direction */
+/* Offset to next interlace block in the y direction */
PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
/* Height of interlace block. This is not currently used - if you need
@@ -92,7 +92,8 @@
void PNGAPI
png_set_sig_bytes(png_structp png_ptr, int num_bytes)
{
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_debug(1, "in png_set_sig_bytes");
if (num_bytes > 8)
png_error(png_ptr, "Too many bytes for PNG signature.");
@@ -153,7 +154,8 @@
png_uint_32 save_flags=p->flags;
png_uint_32 num_bytes;
- if (png_ptr == NULL) return (NULL);
+ if (png_ptr == NULL)
+ return (NULL);
if (items > PNG_UINT_32_MAX/size)
{
png_warning (p, "Potential overflow in png_zalloc()");
@@ -183,7 +185,7 @@
return ((voidpf)ptr);
}
-/* function to free memory for zlib */
+/* Function to free memory for zlib */
#ifdef PNG_1_0_X
void PNGAPI
#else
@@ -241,7 +243,8 @@
png_infop info_ptr;
png_debug(1, "in png_create_info_struct");
- if (png_ptr == NULL) return (NULL);
+ if (png_ptr == NULL)
+ return (NULL);
#ifdef PNG_USER_MEM_SUPPORTED
info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO,
png_ptr->malloc_fn, png_ptr->mem_ptr);
@@ -263,7 +266,8 @@
png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
{
png_infop info_ptr = NULL;
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_debug(1, "in png_destroy_info_struct");
if (info_ptr_ptr != NULL)
@@ -302,18 +306,19 @@
{
png_infop info_ptr = *ptr_ptr;
- if (info_ptr == NULL) return;
+ if (info_ptr == NULL)
+ return;
png_debug(1, "in png_info_init_3");
if (png_sizeof(png_info) > png_info_struct_size)
- {
- png_destroy_struct(info_ptr);
- info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
- *ptr_ptr = info_ptr;
- }
+ {
+ png_destroy_struct(info_ptr);
+ info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
+ *ptr_ptr = info_ptr;
+ }
- /* set everything to 0 */
+ /* Set everything to 0 */
png_memset(info_ptr, 0, png_sizeof(png_info));
}
@@ -344,245 +349,245 @@
return;
#if defined(PNG_TEXT_SUPPORTED)
-/* free text item num or (if num == -1) all text items */
+ /* Free text item num or (if num == -1) all text items */
#ifdef PNG_FREE_ME_SUPPORTED
-if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
+ if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
#else
-if (mask & PNG_FREE_TEXT)
+ if (mask & PNG_FREE_TEXT)
#endif
-{
- if (num != -1)
{
- if (info_ptr->text && info_ptr->text[num].key)
- {
- png_free(png_ptr, info_ptr->text[num].key);
- info_ptr->text[num].key = NULL;
- }
+ if (num != -1)
+ {
+ if (info_ptr->text && info_ptr->text[num].key)
+ {
+ png_free(png_ptr, info_ptr->text[num].key);
+ info_ptr->text[num].key = NULL;
+ }
+ }
+ else
+ {
+ int i;
+ for (i = 0; i < info_ptr->num_text; i++)
+ png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i);
+ png_free(png_ptr, info_ptr->text);
+ info_ptr->text = NULL;
+ info_ptr->num_text=0;
+ }
}
- else
- {
- int i;
- for (i = 0; i < info_ptr->num_text; i++)
- png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i);
- png_free(png_ptr, info_ptr->text);
- info_ptr->text = NULL;
- info_ptr->num_text=0;
- }
-}
#endif
#if defined(PNG_tRNS_SUPPORTED)
-/* free any tRNS entry */
+ /* Free any tRNS entry */
#ifdef PNG_FREE_ME_SUPPORTED
-if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
+ if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
#else
-if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS))
+ if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS))
#endif
-{
- png_free(png_ptr, info_ptr->trans);
- info_ptr->trans = NULL;
- info_ptr->valid &= ~PNG_INFO_tRNS;
+ {
+ png_free(png_ptr, info_ptr->trans);
+ info_ptr->trans = NULL;
+ info_ptr->valid &= ~PNG_INFO_tRNS;
#ifndef PNG_FREE_ME_SUPPORTED
- png_ptr->flags &= ~PNG_FLAG_FREE_TRNS;
+ png_ptr->flags &= ~PNG_FLAG_FREE_TRNS;
#endif
-}
+ }
#endif
#if defined(PNG_sCAL_SUPPORTED)
-/* free any sCAL entry */
+ /* Free any sCAL entry */
#ifdef PNG_FREE_ME_SUPPORTED
-if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
+ if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
#else
-if (mask & PNG_FREE_SCAL)
+ if (mask & PNG_FREE_SCAL)
#endif
-{
+ {
#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;
+ 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;
-}
+ info_ptr->valid &= ~PNG_INFO_sCAL;
+ }
#endif
#if defined(PNG_pCAL_SUPPORTED)
-/* free any pCAL entry */
+ /* Free any pCAL entry */
#ifdef PNG_FREE_ME_SUPPORTED
-if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
+ if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
#else
-if (mask & PNG_FREE_PCAL)
+ if (mask & PNG_FREE_PCAL)
#endif
-{
- png_free(png_ptr, info_ptr->pcal_purpose);
- png_free(png_ptr, info_ptr->pcal_units);
- info_ptr->pcal_purpose = NULL;
- info_ptr->pcal_units = NULL;
- if (info_ptr->pcal_params != NULL)
- {
- int i;
- for (i = 0; i < (int)info_ptr->pcal_nparams; i++)
- {
- png_free(png_ptr, info_ptr->pcal_params[i]);
- info_ptr->pcal_params[i]=NULL;
- }
- png_free(png_ptr, info_ptr->pcal_params);
- info_ptr->pcal_params = NULL;
- }
- info_ptr->valid &= ~PNG_INFO_pCAL;
-}
+ {
+ png_free(png_ptr, info_ptr->pcal_purpose);
+ png_free(png_ptr, info_ptr->pcal_units);
+ info_ptr->pcal_purpose = NULL;
+ info_ptr->pcal_units = NULL;
+ if (info_ptr->pcal_params != NULL)
+ {
+ int i;
+ for (i = 0; i < (int)info_ptr->pcal_nparams; i++)
+ {
+ png_free(png_ptr, info_ptr->pcal_params[i]);
+ info_ptr->pcal_params[i]=NULL;
+ }
+ png_free(png_ptr, info_ptr->pcal_params);
+ info_ptr->pcal_params = NULL;
+ }
+ info_ptr->valid &= ~PNG_INFO_pCAL;
+ }
#endif
#if defined(PNG_iCCP_SUPPORTED)
-/* free any iCCP entry */
+ /* Free any iCCP entry */
#ifdef PNG_FREE_ME_SUPPORTED
-if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
+ if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
#else
-if (mask & PNG_FREE_ICCP)
+ if (mask & PNG_FREE_ICCP)
#endif
-{
- png_free(png_ptr, info_ptr->iccp_name);
- png_free(png_ptr, info_ptr->iccp_profile);
- info_ptr->iccp_name = NULL;
- info_ptr->iccp_profile = NULL;
- info_ptr->valid &= ~PNG_INFO_iCCP;
-}
+ {
+ png_free(png_ptr, info_ptr->iccp_name);
+ png_free(png_ptr, info_ptr->iccp_profile);
+ info_ptr->iccp_name = NULL;
+ info_ptr->iccp_profile = NULL;
+ info_ptr->valid &= ~PNG_INFO_iCCP;
+ }
#endif
#if defined(PNG_sPLT_SUPPORTED)
-/* free a given sPLT entry, or (if num == -1) all sPLT entries */
+ /* Free a given sPLT entry, or (if num == -1) all sPLT entries */
#ifdef PNG_FREE_ME_SUPPORTED
-if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
+ if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
#else
-if (mask & PNG_FREE_SPLT)
+ if (mask & PNG_FREE_SPLT)
#endif
-{
- if (num != -1)
{
- if (info_ptr->splt_palettes)
+ if (num != -1)
{
- png_free(png_ptr, info_ptr->splt_palettes[num].name);
- png_free(png_ptr, info_ptr->splt_palettes[num].entries);
- info_ptr->splt_palettes[num].name = NULL;
- info_ptr->splt_palettes[num].entries = NULL;
+ if (info_ptr->splt_palettes)
+ {
+ png_free(png_ptr, info_ptr->splt_palettes[num].name);
+ png_free(png_ptr, info_ptr->splt_palettes[num].entries);
+ info_ptr->splt_palettes[num].name = NULL;
+ info_ptr->splt_palettes[num].entries = NULL;
+ }
+ }
+ else
+ {
+ if (info_ptr->splt_palettes_num)
+ {
+ int i;
+ for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
+ png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, i);
+
+ png_free(png_ptr, info_ptr->splt_palettes);
+ info_ptr->splt_palettes = NULL;
+ info_ptr->splt_palettes_num = 0;
+ }
+ info_ptr->valid &= ~PNG_INFO_sPLT;
}
}
- else
- {
- if (info_ptr->splt_palettes_num)
- {
- int i;
- for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
- png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, i);
-
- png_free(png_ptr, info_ptr->splt_palettes);
- info_ptr->splt_palettes = NULL;
- info_ptr->splt_palettes_num = 0;
- }
- info_ptr->valid &= ~PNG_INFO_sPLT;
- }
-}
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
- if (png_ptr->unknown_chunk.data)
- {
- png_free(png_ptr, png_ptr->unknown_chunk.data);
- png_ptr->unknown_chunk.data = NULL;
- }
+ if (png_ptr->unknown_chunk.data)
+ {
+ png_free(png_ptr, png_ptr->unknown_chunk.data);
+ png_ptr->unknown_chunk.data = NULL;
+ }
#ifdef PNG_FREE_ME_SUPPORTED
-if ((mask & PNG_FREE_UNKN) & info_ptr->free_me)
+ if ((mask & PNG_FREE_UNKN) & info_ptr->free_me)
#else
-if (mask & PNG_FREE_UNKN)
+ if (mask & PNG_FREE_UNKN)
#endif
-{
- if (num != -1)
{
- if (info_ptr->unknown_chunks)
- {
- png_free(png_ptr, info_ptr->unknown_chunks[num].data);
- info_ptr->unknown_chunks[num].data = NULL;
- }
- }
- else
- {
- int i;
+ if (num != -1)
+ {
+ if (info_ptr->unknown_chunks)
+ {
+ png_free(png_ptr, info_ptr->unknown_chunks[num].data);
+ 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++)
- png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, i);
+ if (info_ptr->unknown_chunks_num)
+ {
+ for (i = 0; i < (int)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);
- info_ptr->unknown_chunks = NULL;
- info_ptr->unknown_chunks_num = 0;
- }
+ png_free(png_ptr, info_ptr->unknown_chunks);
+ info_ptr->unknown_chunks = NULL;
+ info_ptr->unknown_chunks_num = 0;
+ }
+ }
}
-}
#endif
#if defined(PNG_hIST_SUPPORTED)
-/* free any hIST entry */
+ /* Free any hIST entry */
#ifdef PNG_FREE_ME_SUPPORTED
-if ((mask & PNG_FREE_HIST) & info_ptr->free_me)
+ if ((mask & PNG_FREE_HIST) & info_ptr->free_me)
#else
-if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST))
+ if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST))
#endif
-{
- png_free(png_ptr, info_ptr->hist);
- info_ptr->hist = NULL;
- info_ptr->valid &= ~PNG_INFO_hIST;
+ {
+ png_free(png_ptr, info_ptr->hist);
+ info_ptr->hist = NULL;
+ info_ptr->valid &= ~PNG_INFO_hIST;
#ifndef PNG_FREE_ME_SUPPORTED
- png_ptr->flags &= ~PNG_FLAG_FREE_HIST;
+ png_ptr->flags &= ~PNG_FLAG_FREE_HIST;
#endif
-}
+ }
#endif
-/* free any PLTE entry that was internally allocated */
+ /* Free any PLTE entry that was internally allocated */
#ifdef PNG_FREE_ME_SUPPORTED
-if ((mask & PNG_FREE_PLTE) & info_ptr->free_me)
+ if ((mask & PNG_FREE_PLTE) & info_ptr->free_me)
#else
-if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE))
+ if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE))
#endif
-{
- png_zfree(png_ptr, info_ptr->palette);
- info_ptr->palette = NULL;
- info_ptr->valid &= ~PNG_INFO_PLTE;
+ {
+ png_zfree(png_ptr, info_ptr->palette);
+ info_ptr->palette = NULL;
+ info_ptr->valid &= ~PNG_INFO_PLTE;
#ifndef PNG_FREE_ME_SUPPORTED
- png_ptr->flags &= ~PNG_FLAG_FREE_PLTE;
+ png_ptr->flags &= ~PNG_FLAG_FREE_PLTE;
#endif
- info_ptr->num_palette = 0;
-}
+ info_ptr->num_palette = 0;
+ }
#if defined(PNG_INFO_IMAGE_SUPPORTED)
-/* free any image bits attached to the info structure */
+ /* Free any image bits attached to the info structure */
#ifdef PNG_FREE_ME_SUPPORTED
-if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
+ if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
#else
-if (mask & PNG_FREE_ROWS)
+ if (mask & PNG_FREE_ROWS)
#endif
-{
- if (info_ptr->row_pointers)
- {
- int row;
- for (row = 0; row < (int)info_ptr->height; row++)
- {
- png_free(png_ptr, info_ptr->row_pointers[row]);
- info_ptr->row_pointers[row]=NULL;
- }
- png_free(png_ptr, info_ptr->row_pointers);
- info_ptr->row_pointers=NULL;
- }
- info_ptr->valid &= ~PNG_INFO_IDAT;
-}
+ {
+ if (info_ptr->row_pointers)
+ {
+ int row;
+ for (row = 0; row < (int)info_ptr->height; row++)
+ {
+ png_free(png_ptr, info_ptr->row_pointers[row]);
+ info_ptr->row_pointers[row]=NULL;
+ }
+ png_free(png_ptr, info_ptr->row_pointers);
+ info_ptr->row_pointers=NULL;
+ }
+ info_ptr->valid &= ~PNG_INFO_IDAT;
+ }
#endif
#ifdef PNG_FREE_ME_SUPPORTED
if (num == -1)
- info_ptr->free_me &= ~mask;
+ info_ptr->free_me &= ~mask;
else
- info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL);
+ info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL);
#endif
}
@@ -600,9 +605,9 @@
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
if (png_ptr->num_chunk_list)
{
- png_free(png_ptr, png_ptr->chunk_list);
- png_ptr->chunk_list=NULL;
- png_ptr->num_chunk_list = 0;
+ png_free(png_ptr, png_ptr->chunk_list);
+ png_ptr->chunk_list=NULL;
+ png_ptr->num_chunk_list = 0;
}
#endif
@@ -617,7 +622,8 @@
png_voidp PNGAPI
png_get_io_ptr(png_structp png_ptr)
{
- if (png_ptr == NULL) return (NULL);
+ if (png_ptr == NULL)
+ return (NULL);
return (png_ptr->io_ptr);
}
@@ -633,7 +639,8 @@
png_init_io(png_structp png_ptr, png_FILE_p fp)
{
png_debug(1, "in png_init_io");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->io_ptr = (png_voidp)fp;
}
#endif
@@ -649,7 +656,8 @@
{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
- if (png_ptr == NULL) return (NULL);
+ if (png_ptr == NULL)
+ return (NULL);
if (png_ptr->time_buffer == NULL)
{
png_ptr->time_buffer = (png_charp)png_malloc(png_ptr, (png_uint_32)(29*
@@ -693,9 +701,9 @@
png_charp PNGAPI
png_get_copyright(png_structp png_ptr)
{
- png_ptr = png_ptr; /* silence compiler warning about unused png_ptr */
- return ((png_charp) "\n libpng version 1.0.44 - May 7, 2009\n\
- Copyright (c) 1998-2008 Glenn Randers-Pehrson\n\
+ png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
+ return ((png_charp) "\n libpng version 1.0.45 - June 4, 2009\n\
+ Copyright (c) 1998-2009 Glenn Randers-Pehrson\n\
Copyright (c) 1996-1997 Andreas Dilger\n\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
}
@@ -712,7 +720,7 @@
png_get_libpng_ver(png_structp png_ptr)
{
/* Version of *.c files used when building libpng */
- png_ptr = png_ptr; /* silence compiler warning about unused png_ptr */
+ png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
return ((png_charp) PNG_LIBPNG_VER_STRING);
}
@@ -720,7 +728,7 @@
png_get_header_ver(png_structp png_ptr)
{
/* Version of *.h files used when building libpng */
- png_ptr = png_ptr; /* silence compiler warning about unused png_ptr */
+ png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
return ((png_charp) PNG_LIBPNG_VER_STRING);
}
@@ -728,7 +736,7 @@
png_get_header_version(png_structp png_ptr)
{
/* Returns longer string containing both version and date */
- png_ptr = png_ptr; /* silence compiler warning about unused png_ptr */
+ png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
return ((png_charp) PNG_HEADER_VERSION_STRING
#ifndef PNG_READ_SUPPORTED
" (NO READ SUPPORT)"
@@ -741,7 +749,7 @@
int PNGAPI
png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name)
{
- /* check chunk_name and return "keep" value if it's on the list, else 0 */
+ /* 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)
@@ -758,7 +766,8 @@
int PNGAPI
png_reset_zstream(png_structp png_ptr)
{
- if (png_ptr == NULL) return Z_STREAM_ERROR;
+ if (png_ptr == NULL)
+ return Z_STREAM_ERROR;
return (inflateReset(&png_ptr->zstream));
}
#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
@@ -774,11 +783,11 @@
#if defined(PNG_READ_SUPPORTED) && defined(PNG_ASSEMBLER_CODE_SUPPORTED)
#if !defined(PNG_1_0_X)
-/* this function was added to libpng 1.2.0 */
+/* This function was added to libpng 1.2.0 */
int PNGAPI
png_mmx_support(void)
{
- /* obsolete, to be removed from libpng-1.4.0 */
+ /* Obsolete, to be removed from libpng-1.4.0 */
return -1;
}
#endif /* PNG_1_0_X */
@@ -791,9 +800,9 @@
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);
+ 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 */
@@ -802,43 +811,44 @@
#if !defined(PNG_NO_CHECK_cHRM)
/*
- 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.
+ * 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 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;
+ int a, b, c, d;
+ long lo, hi, x, y;
- a = (v1 >> 16) & 0xffff;
- b = v1 & 0xffff;
- c = (v2 >> 16) & 0xffff;
- d = v2 & 0xffff;
+ 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 = 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;
+ lo = (lo & 0xffff) | ((y & 0xffff) << 16);
+ hi = (y >> 16) & 0xffff;
- hi += a * c; /* AC */
+ hi += a * c; /* AC */
- *hi_product = (unsigned long)hi;
- *lo_product = (unsigned long)lo;
+ *hi_product = (unsigned long)hi;
+ *lo_product = (unsigned long)lo;
}
+
int /* private */
png_check_cHRM_fixed(png_structp png_ptr,
png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
diff --git a/png.h b/png.h
index c1c27a6..f4d489f 100644
--- a/png.h
+++ b/png.h
@@ -1,6 +1,6 @@
/* png.h - header file for PNG reference library
*
- * libpng version 1.0.44 - May 7, 2009
+ * libpng version 1.0.45 - June 4, 2009
* Copyright (c) 1998-2009 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.)
@@ -8,7 +8,7 @@
* 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 1.0.44 - May 7, 2009: Glenn
+ * libpng versions 0.97, January 1998, through 1.0.45 - June 4, 2009: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@@ -226,6 +226,9 @@
* 1.2.36rc01 13 10236 12.so.0.36[.0]
* 1.0.44 10 10044 10.so.0.44[.0]
* 1.2.36 13 10236 12.so.0.36[.0]
+ * 1.2.37beta01-03 13 10237 12.so.0.37[.0]
+ * 1.2.37rc01 13 10237 12.so.0.37[.0]
+ * 1.2.37 13 10237 12.so.0.37[.0]
*
* Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be
@@ -255,7 +258,7 @@
* If you modify libpng you may insert additional notices immediately following
* this sentence.
*
- * libpng versions 1.2.6, August 15, 2004, through 1.0.44, May 7, 2009, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.0.45, June 4, 2009, are
* Copyright (c) 2004, 2006-2009 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:
@@ -367,13 +370,13 @@
* Y2K compliance in libpng:
* =========================
*
- * May 7, 2009
+ * June 4, 2009
*
* 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 1.0.44 are Y2K compliant. It is my belief that earlier
+ * upward through 1.0.45 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
@@ -429,9 +432,9 @@
*/
/* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.0.44"
+#define PNG_LIBPNG_VER_STRING "1.0.45"
#define PNG_HEADER_VERSION_STRING \
- " libpng version 1.0.44 - May 7, 2009\n"
+ " libpng version 1.0.45 - June 4, 2009\n"
#define PNG_LIBPNG_VER_SONUM 0
#define PNG_LIBPNG_VER_DLLNUM 10
@@ -439,7 +442,7 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 0
-#define PNG_LIBPNG_VER_RELEASE 44
+#define PNG_LIBPNG_VER_RELEASE 45
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: */
@@ -467,7 +470,7 @@
* Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
* 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 10044 /* 1.0.44 */
+#define PNG_LIBPNG_VER 10045 /* 1.0.45 */
#ifndef PNG_VERSION_INFO_ONLY
/* include the compression library's header */
@@ -1491,7 +1494,7 @@
/* 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_0_44;
+typedef png_structp version_1_0_45;
typedef png_struct FAR * FAR * png_structpp;
diff --git a/pngconf.h b/pngconf.h
index 5613b44..2b41016 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng
*
- * libpng version 1.0.44 - May 7, 2009
+ * libpng version 1.0.45 - June 4, 2009
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngerror.c b/pngerror.c
index 0f4c562..d395d29 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
- * Last changed in libpng 1.2.36 [May 7, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -234,9 +234,11 @@
fprintf(stderr, "\n");
}
else
+ {
fprintf(stderr, "libpng error: %s, offset=%d",
error_message, offset);
fprintf(stderr, "\n");
+ }
}
else
#endif
@@ -263,7 +265,7 @@
PNG_ABORT();
#endif
#ifdef PNG_NO_CONSOLE_IO
- error_message = error_message; /* make compiler happy */
+ error_message = error_message; /* Make compiler happy */
#endif
}
@@ -309,9 +311,9 @@
fprintf(stderr, "\n");
}
#else
- warning_message = warning_message; /* make compiler happy */
+ warning_message = warning_message; /* Make compiler happy */
#endif
- png_ptr = png_ptr; /* make compiler happy */
+ png_ptr = png_ptr; /* Make compiler happy */
}
#endif /* PNG_NO_WARNINGS */
diff --git a/pngget.c b/pngget.c
index 3b2b646..0022d95 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,9 +1,9 @@
/* pngget.c - retrieval of values from info struct
*
- * Last changed in libpng 1.2.30 [August 15, 2008]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2009 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.)
*/
@@ -17,6 +17,7 @@
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->valid & flag);
+
else
return(0);
}
@@ -26,6 +27,7 @@
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->rowbytes);
+
else
return(0);
}
@@ -36,20 +38,20 @@
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->row_pointers);
+
else
return(0);
}
#endif
#ifdef PNG_EASY_ACCESS_SUPPORTED
-/* easy access to info, added in libpng-0.99 */
+/* Easy access to info, added in libpng-0.99 */
png_uint_32 PNGAPI
png_get_image_width(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->width;
- }
+
return (0);
}
@@ -57,9 +59,8 @@
png_get_image_height(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->height;
- }
+
return (0);
}
@@ -67,9 +68,8 @@
png_get_bit_depth(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->bit_depth;
- }
+
return (0);
}
@@ -77,9 +77,8 @@
png_get_color_type(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->color_type;
- }
+
return (0);
}
@@ -87,9 +86,8 @@
png_get_filter_type(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->filter_type;
- }
+
return (0);
}
@@ -97,9 +95,8 @@
png_get_interlace_type(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->interlace_type;
- }
+
return (0);
}
@@ -107,9 +104,8 @@
png_get_compression_type(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->compression_type;
- }
+
return (0);
}
@@ -121,9 +117,12 @@
if (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 (info_ptr->x_pixels_per_unit);
}
#else
return (0);
@@ -139,9 +138,12 @@
if (info_ptr->valid & PNG_INFO_pHYs)
{
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);
+
+ else
+ return (info_ptr->y_pixels_per_unit);
}
#else
return (0);
@@ -157,10 +159,13 @@
if (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);
+
+ else
+ return (info_ptr->x_pixels_per_unit);
}
#else
return (0);
@@ -174,6 +179,7 @@
{
if (png_ptr != NULL && info_ptr != NULL)
#if defined(PNG_pHYs_SUPPORTED)
+
if (info_ptr->valid & PNG_INFO_pHYs)
{
png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
@@ -184,7 +190,7 @@
/(float)info_ptr->x_pixels_per_unit));
}
#else
- return (0.0);
+ return (0.0);
#endif
return ((float)0.0);
}
@@ -195,15 +201,19 @@
{
if (png_ptr != NULL && info_ptr != NULL)
#if defined(PNG_oFFs_SUPPORTED)
+
if (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);
+
+ else
+ return (info_ptr->x_offset);
}
#else
- return (0);
+ return (0);
#endif
return (0);
}
@@ -212,13 +222,17 @@
png_get_y_offset_microns(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
+
#if defined(PNG_oFFs_SUPPORTED)
if (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);
+
+ else
+ return (info_ptr->y_offset);
}
#else
return (0);
@@ -230,13 +244,17 @@
png_get_x_offset_pixels(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
+
#if defined(PNG_oFFs_SUPPORTED)
if (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_PIXEL)
return (0);
- else return (info_ptr->x_offset);
+
+ else
+ return (info_ptr->x_offset);
}
#else
return (0);
@@ -248,13 +266,17 @@
png_get_y_offset_pixels(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
+
#if defined(PNG_oFFs_SUPPORTED)
if (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_PIXEL)
return (0);
- else return (info_ptr->y_offset);
+
+ else
+ return (info_ptr->y_offset);
}
#else
return (0);
@@ -495,8 +517,9 @@
png_debug1(1, "in %s retrieval function", "iCCP");
*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. */
+ /* 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;
return (PNG_INFO_iCCP);
@@ -549,22 +572,29 @@
*height = info_ptr->height;
*bit_depth = info_ptr->bit_depth;
if (info_ptr->bit_depth < 1 || info_ptr->bit_depth > 16)
- png_error(png_ptr, "Invalid bit depth");
+ png_error(png_ptr, "Invalid bit depth");
+
*color_type = info_ptr->color_type;
+
if (info_ptr->color_type > 6)
- png_error(png_ptr, "Invalid color type");
+ png_error(png_ptr, "Invalid color type");
+
if (compression_type != NULL)
*compression_type = info_ptr->compression_type;
+
if (filter_type != NULL)
*filter_type = info_ptr->filter_type;
+
if (interlace_type != NULL)
*interlace_type = info_ptr->interlace_type;
- /* check for potential overflow of rowbytes */
+ /* Check for potential overflow of rowbytes */
if (*width == 0 || *width > PNG_UINT_31_MAX)
png_error(png_ptr, "Invalid image width");
+
if (*height == 0 || *height > PNG_UINT_31_MAX)
png_error(png_ptr, "Invalid image height");
+
if (info_ptr->width > (PNG_UINT_32_MAX
>> 3) /* 8-byte RGBA pixels */
- 64 /* bigrowbuf hack */
@@ -575,6 +605,7 @@
png_warning(png_ptr,
"Width too large for libpng to process image data.");
}
+
return (1);
}
return (0);
@@ -605,8 +636,8 @@
png_charp *units, png_charpp *params)
{
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
- && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
- nparams != NULL && units != NULL && params != NULL)
+ && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
+ nparams != NULL && units != NULL && params != NULL)
{
png_debug1(1, "in %s retrieval function", "pCAL");
*purpose = info_ptr->pcal_purpose;
@@ -629,7 +660,7 @@
int *unit, double *width, double *height)
{
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_sCAL))
+ (info_ptr->valid & PNG_INFO_sCAL))
{
*unit = info_ptr->scal_unit;
*width = info_ptr->scal_pixel_width;
@@ -645,7 +676,7 @@
int *unit, png_charpp width, png_charpp height)
{
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_sCAL))
+ (info_ptr->valid & PNG_INFO_sCAL))
{
*unit = info_ptr->scal_unit;
*width = info_ptr->scal_s_width;
@@ -669,16 +700,19 @@
(info_ptr->valid & PNG_INFO_pHYs))
{
png_debug1(1, "in %s retrieval function", "pHYs");
+
if (res_x != NULL)
{
*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;
@@ -730,10 +764,13 @@
png_debug1(1, "in %s retrieval function",
(png_ptr->chunk_name[0] == '\0' ? "text"
: (png_const_charp)png_ptr->chunk_name));
+
if (text_ptr != NULL)
*text_ptr = info_ptr->text;
+
if (num_text != NULL)
*num_text = info_ptr->num_text;
+
return ((png_uint_32)info_ptr->num_text);
}
if (num_text != NULL)
@@ -773,6 +810,7 @@
*trans = info_ptr->trans;
retval |= PNG_INFO_tRNS;
}
+
if (trans_values != NULL)
*trans_values = &(info_ptr->trans_values);
}
@@ -783,6 +821,7 @@
*trans_values = &(info_ptr->trans_values);
retval |= PNG_INFO_tRNS;
}
+
if (trans != NULL)
*trans = NULL;
}
@@ -836,47 +875,47 @@
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
#ifndef PNG_1_0_X
-/* this function was added to libpng 1.2.0 and should exist by default */
+/* This function was added to libpng 1.2.0 and should exist by default */
png_uint_32 PNGAPI
png_get_asm_flags (png_structp png_ptr)
{
- /* obsolete, to be removed from libpng-1.4.0 */
+ /* Obsolete, to be removed from libpng-1.4.0 */
return (png_ptr? 0L: 0L);
}
-/* this function was added to libpng 1.2.0 and should exist by default */
+/* This function was added to libpng 1.2.0 and should exist by default */
png_uint_32 PNGAPI
png_get_asm_flagmask (int flag_select)
{
- /* obsolete, to be removed from libpng-1.4.0 */
+ /* Obsolete, to be removed from libpng-1.4.0 */
flag_select=flag_select;
return 0L;
}
/* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */
-/* this function was added to libpng 1.2.0 */
+/* This function was added to libpng 1.2.0 */
png_uint_32 PNGAPI
png_get_mmx_flagmask (int flag_select, int *compilerID)
{
- /* obsolete, to be removed from libpng-1.4.0 */
+ /* Obsolete, to be removed from libpng-1.4.0 */
flag_select=flag_select;
*compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */
return 0L;
}
-/* this function was added to libpng 1.2.0 */
+/* This function was added to libpng 1.2.0 */
png_byte PNGAPI
png_get_mmx_bitdepth_threshold (png_structp png_ptr)
{
- /* obsolete, to be removed from libpng-1.4.0 */
+ /* Obsolete, to be removed from libpng-1.4.0 */
return (png_ptr? 0: 0);
}
-/* this function was added to libpng 1.2.0 */
+/* This function was added to libpng 1.2.0 */
png_uint_32 PNGAPI
png_get_mmx_rowbytes_threshold (png_structp png_ptr)
{
- /* obsolete, to be removed from libpng-1.4.0 */
+ /* Obsolete, to be removed from libpng-1.4.0 */
return (png_ptr? 0L: 0L);
}
#endif /* ?PNG_1_0_X */
diff --git a/pngmem.c b/pngmem.c
index f3394d7..d1999b6 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,9 +1,9 @@
/* pngmem.c - stub functions for memory allocation
*
- * Last changed in libpng 1.2.30 [August 15, 2008]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2009 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.)
*
@@ -20,7 +20,7 @@
/* 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 */
+/* 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. */
@@ -40,11 +40,11 @@
png_voidp struct_ptr;
if (type == PNG_STRUCT_INFO)
- size = png_sizeof(png_info);
+ size = png_sizeof(png_info);
else if (type == PNG_STRUCT_PNG)
- size = png_sizeof(png_struct);
+ size = png_sizeof(png_struct);
else
- return (png_get_copyright(NULL));
+ return (png_get_copyright(NULL));
#ifdef PNG_USER_MEM_SUPPORTED
if (malloc_fn != NULL)
@@ -56,7 +56,7 @@
}
else
#endif /* PNG_USER_MEM_SUPPORTED */
- struct_ptr = (png_voidp)farmalloc(size);
+ struct_ptr = (png_voidp)farmalloc(size);
if (struct_ptr != NULL)
png_memset(struct_ptr, 0, size);
return (struct_ptr);
@@ -122,9 +122,9 @@
#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, (png_size_t)size));
else
- ret = (png_malloc_default(png_ptr, size));
+ 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);
@@ -149,12 +149,12 @@
#endif
if (size != (size_t)size)
- ret = NULL;
+ ret = NULL;
else if (size == (png_uint_32)65536L)
{
if (png_ptr->offset_table == NULL)
{
- /* try to see if we need to do any of this fancy stuff */
+ /* Try to see if we need to do any of this fancy stuff */
ret = farmalloc(size);
if (ret == NULL || ((png_size_t)ret & 0xffff))
{
@@ -269,10 +269,10 @@
return (ret);
}
-/* free a pointer allocated by png_malloc(). In the default
- configuration, png_ptr is not used, but is passed in case it
- is needed. If ptr is NULL, return without taking any action. */
-
+/* Free a pointer allocated by png_malloc(). In the default
+ * configuration, png_ptr is not used, but is passed in case it
+ * is needed. If ptr is NULL, return without taking any action.
+ */
void PNGAPI
png_free(png_structp png_ptr, png_voidp ptr)
{
@@ -285,7 +285,8 @@
(*(png_ptr->free_fn))(png_ptr, ptr);
return;
}
- else png_free_default(png_ptr, ptr);
+ else
+ png_free_default(png_ptr, ptr);
}
void PNGAPI
@@ -293,7 +294,8 @@
{
#endif /* PNG_USER_MEM_SUPPORTED */
- if (png_ptr == NULL || ptr == NULL) return;
+ if (png_ptr == NULL || ptr == NULL)
+ return;
if (png_ptr->offset_table != NULL)
{
@@ -420,10 +422,11 @@
}
/* Allocate memory. For reasonable files, size should never exceed
- 64K. However, zlib may allocate more then 64K if you don't tell
- it not to. See zconf.h and png.h for more information. zlib does
- need to allocate exactly 64K, so whatever you call here must
- have the ability to do that. */
+ * 64K. However, zlib may allocate more then 64K if you don't tell
+ * it not to. See zconf.h and png.h for more information. zlib does
+ * need to allocate exactly 64K, so whatever you call here must
+ * have the ability to do that.
+ */
png_voidp PNGAPI
@@ -436,9 +439,9 @@
return (NULL);
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, (png_size_t)size));
else
- ret = (png_malloc_default(png_ptr, size));
+ 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);
@@ -465,23 +468,23 @@
}
#endif
- /* Check for overflow */
+ /* Check for overflow */
#if defined(__TURBOC__) && !defined(__FLAT__)
- if (size != (unsigned long)size)
- ret = NULL;
- else
- ret = farmalloc(size);
+ if (size != (unsigned long)size)
+ ret = NULL;
+ else
+ ret = farmalloc(size);
#else
# if defined(_MSC_VER) && defined(MAXSEG_64K)
- if (size != (unsigned long)size)
- ret = NULL;
- else
- ret = halloc(size, 1);
+ if (size != (unsigned long)size)
+ ret = NULL;
+ else
+ ret = halloc(size, 1);
# else
- if (size != (size_t)size)
- ret = NULL;
- else
- ret = malloc((size_t)size);
+ if (size != (size_t)size)
+ ret = NULL;
+ else
+ ret = malloc((size_t)size);
# endif
#endif
@@ -494,7 +497,8 @@
}
/* Free a pointer allocated by png_malloc(). If ptr is NULL, return
- without taking any action. */
+ * without taking any action.
+ */
void PNGAPI
png_free(png_structp png_ptr, png_voidp ptr)
{
@@ -507,7 +511,8 @@
(*(png_ptr->free_fn))(png_ptr, ptr);
return;
}
- else png_free_default(png_ptr, ptr);
+ else
+ png_free_default(png_ptr, ptr);
}
void PNGAPI
png_free_default(png_structp png_ptr, png_voidp ptr)
@@ -543,7 +548,8 @@
{
png_voidp ptr;
png_uint_32 save_flags;
- if (png_ptr == NULL) return (NULL);
+ if (png_ptr == NULL)
+ return (NULL);
save_flags = png_ptr->flags;
png_ptr->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;
@@ -603,7 +609,8 @@
png_voidp PNGAPI
png_get_mem_ptr(png_structp png_ptr)
{
- if (png_ptr == NULL) return (NULL);
+ 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 b06fbad..9746c7a 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,9 +1,9 @@
/* pngpread.c - read a png file in push mode
*
- * Last changed in libpng 1.2.32 [September 18, 2008]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2009 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.)
*/
@@ -12,7 +12,7 @@
#include "png.h"
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-/* push model modes */
+/* Push model modes */
#define PNG_READ_SIG_MODE 0
#define PNG_READ_CHUNK_MODE 1
#define PNG_READ_IDAT_MODE 2
@@ -27,7 +27,9 @@
png_process_data(png_structp png_ptr, png_infop info_ptr,
png_bytep buffer, png_size_t buffer_size)
{
- if (png_ptr == NULL || info_ptr == NULL) return;
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
png_push_restore_buffer(png_ptr, buffer, buffer_size);
while (png_ptr->buffer_size)
@@ -42,7 +44,9 @@
void /* PRIVATE */
png_process_some_data(png_structp png_ptr, png_infop info_ptr)
{
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
+
switch (png_ptr->process_mode)
{
case PNG_READ_SIG_MODE:
@@ -50,22 +54,26 @@
png_push_read_sig(png_ptr, info_ptr);
break;
}
+
case PNG_READ_CHUNK_MODE:
{
png_push_read_chunk(png_ptr, info_ptr);
break;
}
+
case PNG_READ_IDAT_MODE:
{
png_push_read_IDAT(png_ptr);
break;
}
+
#if defined(PNG_READ_tEXt_SUPPORTED)
case PNG_READ_tEXt_MODE:
{
png_push_read_tEXt(png_ptr, info_ptr);
break;
}
+
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
case PNG_READ_zTXt_MODE:
@@ -73,6 +81,7 @@
png_push_read_zTXt(png_ptr, info_ptr);
break;
}
+
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
case PNG_READ_iTXt_MODE:
@@ -80,12 +89,14 @@
png_push_read_iTXt(png_ptr, info_ptr);
break;
}
+
#endif
case PNG_SKIP_MODE:
{
png_push_crc_finish(png_ptr);
break;
}
+
default:
{
png_ptr->buffer_size = 0;
@@ -224,13 +235,16 @@
{
if (png_ptr->push_length != 13)
png_error(png_ptr, "Invalid IHDR length");
+
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_IHDR(png_ptr, info_ptr, png_ptr->push_length);
}
+
else if (!png_memcmp(png_ptr->chunk_name, png_IEND, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -238,11 +252,13 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_IEND(png_ptr, info_ptr, png_ptr->push_length);
png_ptr->process_mode = PNG_READ_DONE_MODE;
png_push_have_end(png_ptr, info_ptr);
}
+
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
else if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name))
{
@@ -251,20 +267,26 @@
png_push_save_buffer(png_ptr);
return;
}
+
if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
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))
png_ptr->mode |= PNG_HAVE_PLTE;
+
else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
{
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_error(png_ptr, "Missing PLTE before IDAT");
}
}
+
#endif
else if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4))
{
@@ -275,23 +297,26 @@
}
png_handle_PLTE(png_ptr, info_ptr, png_ptr->push_length);
}
+
else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
{
/* 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
* is called after the image has been read - we have an error).
*/
- 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_error(png_ptr, "Missing PLTE before 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_error(png_ptr, "Missing PLTE before IDAT");
if (png_ptr->mode & PNG_HAVE_IDAT)
{
if (!(png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
- if (png_ptr->push_length == 0)
- return;
+ if (png_ptr->push_length == 0)
+ return;
if (png_ptr->mode & PNG_AFTER_IDAT)
png_error(png_ptr, "Too many IDAT's found");
@@ -305,6 +330,7 @@
png_ptr->zstream.next_out = png_ptr->row_buf;
return;
}
+
#if defined(PNG_READ_gAMA_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_gAMA, 4))
{
@@ -313,8 +339,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_gAMA(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_sBIT, 4))
@@ -324,8 +352,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_sBIT(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_cHRM, 4))
@@ -335,8 +365,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_sRGB, 4))
@@ -346,8 +378,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_sRGB(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_iCCP, 4))
@@ -357,8 +391,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_iCCP(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_sPLT, 4))
@@ -368,8 +404,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_sPLT(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_tRNS, 4))
@@ -379,8 +417,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_tRNS(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_bKGD_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_bKGD, 4))
@@ -390,8 +430,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_bKGD(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_hIST, 4))
@@ -401,8 +443,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_hIST(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_pHYs, 4))
@@ -412,8 +456,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_pHYs(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_oFFs, 4))
@@ -423,9 +469,11 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_oFFs(png_ptr, info_ptr, png_ptr->push_length);
}
#endif
+
#if defined(PNG_READ_pCAL_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_pCAL, 4))
{
@@ -434,8 +482,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_pCAL(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_sCAL, 4))
@@ -445,8 +495,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_sCAL(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_tIME, 4))
@@ -456,8 +508,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_handle_tIME(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_tEXt, 4))
@@ -467,8 +521,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_push_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_zTXt, 4))
@@ -478,8 +534,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_push_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4))
@@ -489,8 +547,10 @@
png_push_save_buffer(png_ptr);
return;
}
+
png_push_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
}
+
#endif
else
{
@@ -565,7 +625,9 @@
{
png_bytep ptr;
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
+
ptr = buffer;
if (png_ptr->save_buffer_size)
{
@@ -589,6 +651,7 @@
if (length < png_ptr->current_buffer_size)
save_size = length;
+
else
save_size = png_ptr->current_buffer_size;
@@ -629,6 +692,7 @@
{
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(png_ptr,
@@ -697,7 +761,8 @@
if (png_ptr->idat_size < (png_uint_32)png_ptr->save_buffer_size)
{
save_size = (png_size_t)png_ptr->idat_size;
- /* check for overflow */
+
+ /* Check for overflow */
if ((png_uint_32)save_size != png_ptr->idat_size)
png_error(png_ptr, "save_size overflowed in pngpread");
}
@@ -705,8 +770,10 @@
save_size = png_ptr->save_buffer_size;
png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
+
if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size);
+
png_ptr->idat_size -= save_size;
png_ptr->buffer_size -= save_size;
png_ptr->save_buffer_size -= save_size;
@@ -719,7 +786,8 @@
if (png_ptr->idat_size < (png_uint_32)png_ptr->current_buffer_size)
{
save_size = (png_size_t)png_ptr->idat_size;
- /* check for overflow */
+
+ /* Check for overflow */
if ((png_uint_32)save_size != png_ptr->idat_size)
png_error(png_ptr, "save_size overflowed in pngpread");
}
@@ -769,6 +837,7 @@
{
if (png_ptr->zstream.avail_in)
png_error(png_ptr, "Extra compressed data");
+
if (!(png_ptr->zstream.avail_out))
{
png_push_process_row(png_ptr);
@@ -780,6 +849,7 @@
}
else if (ret == Z_BUF_ERROR)
break;
+
else
png_error(png_ptr, "Decompression Error");
}
@@ -801,6 +871,7 @@
png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
png_ptr->zstream.next_out = png_ptr->row_buf;
}
+
else
break;
}
@@ -829,7 +900,7 @@
png_do_read_transformations(png_ptr);
#if defined(PNG_READ_INTERLACING_SUPPORTED)
- /* blow up interlaced rows to full size */
+ /* Blow up interlaced rows to full size */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
if (png_ptr->pass < 6)
@@ -847,9 +918,10 @@
for (i = 0; i < 8 && png_ptr->pass == 0; i++)
{
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
- png_read_push_finish_row(png_ptr); /* updates png_ptr->pass */
+ png_read_push_finish_row(png_ptr); /* Updates png_ptr->pass */
}
- if (png_ptr->pass == 2) /* pass 1 might be empty */
+
+ if (png_ptr->pass == 2) /* Pass 1 might be empty */
{
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
@@ -857,6 +929,7 @@
png_read_push_finish_row(png_ptr);
}
}
+
if (png_ptr->pass == 4 && png_ptr->height <= 4)
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
@@ -865,13 +938,16 @@
png_read_push_finish_row(png_ptr);
}
}
+
if (png_ptr->pass == 6 && png_ptr->height <= 4)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
+
break;
}
+
case 1:
{
int i;
@@ -880,7 +956,8 @@
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
png_read_push_finish_row(png_ptr);
}
- if (png_ptr->pass == 2) /* skip top 4 generated rows */
+
+ if (png_ptr->pass == 2) /* Skip top 4 generated rows */
{
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
@@ -888,22 +965,27 @@
png_read_push_finish_row(png_ptr);
}
}
+
break;
}
+
case 2:
{
int i;
+
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
png_read_push_finish_row(png_ptr);
}
+
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
- if (png_ptr->pass == 4) /* pass 3 might be empty */
+
+ if (png_ptr->pass == 4) /* Pass 3 might be empty */
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
@@ -911,17 +993,21 @@
png_read_push_finish_row(png_ptr);
}
}
+
break;
}
+
case 3:
{
int i;
+
for (i = 0; i < 4 && png_ptr->pass == 3; i++)
{
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
png_read_push_finish_row(png_ptr);
}
- if (png_ptr->pass == 4) /* skip top two generated rows */
+
+ if (png_ptr->pass == 4) /* Skip top two generated rows */
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
@@ -929,49 +1015,61 @@
png_read_push_finish_row(png_ptr);
}
}
+
break;
}
+
case 4:
{
int i;
+
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
png_read_push_finish_row(png_ptr);
}
+
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
- if (png_ptr->pass == 6) /* pass 5 might be empty */
+
+ if (png_ptr->pass == 6) /* Pass 5 might be empty */
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
+
break;
}
+
case 5:
{
int i;
+
for (i = 0; i < 2 && png_ptr->pass == 5; i++)
{
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
png_read_push_finish_row(png_ptr);
}
- if (png_ptr->pass == 6) /* skip top generated row */
+
+ if (png_ptr->pass == 6) /* Skip top generated row */
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
+
break;
}
case 6:
{
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
png_read_push_finish_row(png_ptr);
+
if (png_ptr->pass != 6)
break;
+
png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
@@ -989,18 +1087,18 @@
png_read_push_finish_row(png_structp png_ptr)
{
#ifdef PNG_USE_LOCAL_ARRAYS
- /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
- /* start of interlace block */
+ /* Start of interlace block */
PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
- /* offset to next interlace block */
+ /* Offset to next interlace block */
PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
- /* start of interlace block in the y direction */
+ /* Start of interlace block in the y direction */
PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
- /* offset to next interlace block in the y direction */
+ /* Offset to next interlace block in the y direction */
PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
/* Height of interlace block. This is not currently used - if you need
@@ -1013,6 +1111,7 @@
if (png_ptr->row_number < png_ptr->num_rows)
return;
+#if defined(PNG_READ_INTERLACING_SUPPORTED)
if (png_ptr->interlaced)
{
png_ptr->row_number = 0;
@@ -1028,6 +1127,7 @@
if (png_ptr->pass > 7)
png_ptr->pass--;
+
if (png_ptr->pass >= 7)
break;
@@ -1049,6 +1149,7 @@
} while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0);
}
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
}
#if defined(PNG_READ_tEXt_SUPPORTED)
@@ -1059,7 +1160,7 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
{
png_error(png_ptr, "Out of place tEXt");
- info_ptr = info_ptr; /* to quiet some compiler warnings */
+ info_ptr = info_ptr; /* To quiet some compiler warnings */
}
#ifdef PNG_MAX_MALLOC_64K
@@ -1091,8 +1192,10 @@
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;
@@ -1120,7 +1223,7 @@
key = png_ptr->current_text;
for (text = key; *text; text++)
- /* empty loop */ ;
+ /* Empty loop */ ;
if (text < key + png_ptr->current_text_size)
text++;
@@ -1155,7 +1258,7 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
{
png_error(png_ptr, "Out of place zTXt");
- info_ptr = info_ptr; /* to quiet some compiler warnings */
+ info_ptr = info_ptr; /* To quiet some compiler warnings */
}
#ifdef PNG_MAX_MALLOC_64K
@@ -1189,8 +1292,10 @@
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;
@@ -1214,7 +1319,7 @@
key = png_ptr->current_text;
for (text = key; *text; text++)
- /* empty loop */ ;
+ /* Empty loop */ ;
/* zTXt can't have zero text */
if (text >= key + png_ptr->current_text_size)
@@ -1226,7 +1331,7 @@
text++;
- if (*text != PNG_TEXT_COMPRESSION_zTXt) /* check compression byte */
+ if (*text != PNG_TEXT_COMPRESSION_zTXt) /* Check compression byte */
{
png_ptr->current_text = NULL;
png_free(png_ptr, key);
@@ -1265,11 +1370,15 @@
text = (png_charp)png_malloc(png_ptr,
(png_uint_32)(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
@@ -1280,10 +1389,13 @@
text = (png_charp)png_malloc(png_ptr, text_size +
(png_uint_32)(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';
}
@@ -1347,7 +1459,7 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
{
png_error(png_ptr, "Out of place iTXt");
- info_ptr = info_ptr; /* to quiet some compiler warnings */
+ info_ptr = info_ptr; /* To quiet some compiler warnings */
}
#ifdef PNG_MAX_MALLOC_64K
@@ -1380,8 +1492,10 @@
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;
@@ -1412,23 +1526,25 @@
key = png_ptr->current_text;
for (lang = key; *lang; lang++)
- /* empty loop */ ;
+ /* Empty loop */ ;
if (lang < key + png_ptr->current_text_size - 3)
lang++;
comp_flag = *lang++;
- lang++; /* skip comp_type, always zero */
+ lang++; /* Skip comp_type, always zero */
for (lang_key = lang; *lang_key; lang_key++)
- /* empty loop */ ;
- lang_key++; /* skip NUL separator */
+ /* 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 */ ;
+ /* Empty loop */ ;
}
if (text < key + png_ptr->current_text_size)
@@ -1436,6 +1552,7 @@
text_ptr = (png_textp)png_malloc(png_ptr,
(png_uint_32)png_sizeof(png_text));
+
text_ptr->compression = comp_flag + 2;
text_ptr->key = key;
text_ptr->lang = lang;
@@ -1477,7 +1594,7 @@
#endif
png_chunk_error(png_ptr, "unknown critical chunk");
- info_ptr = info_ptr; /* to quiet some compiler warnings */
+ info_ptr = info_ptr; /* To quiet some compiler warnings */
}
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
@@ -1498,23 +1615,28 @@
= '\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_uint_32)length);
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
}
+
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
if (png_ptr->read_user_chunk_fn != NULL)
{
- /* callback to user unknown chunk handler */
+ /* 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))
@@ -1525,12 +1647,14 @@
&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;
@@ -1567,7 +1691,9 @@
PNG_CONST int FARDATA png_pass_dsp_mask[7] =
{0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
#endif
- if (png_ptr == NULL) return;
+ 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]);
}
@@ -1577,7 +1703,9 @@
png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
png_progressive_end_ptr end_fn)
{
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
+
png_ptr->info_fn = info_fn;
png_ptr->row_fn = row_fn;
png_ptr->end_fn = end_fn;
@@ -1588,7 +1716,9 @@
png_voidp PNGAPI
png_get_progressive_ptr(png_structp png_ptr)
{
- if (png_ptr == NULL) return (NULL);
+ if (png_ptr == NULL)
+ return (NULL);
+
return png_ptr->io_ptr;
}
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
diff --git a/pngread.c b/pngread.c
index 8e9c0cb..370ecba 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
- * Last changed in libpng 1.2.35 [February 14, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -57,7 +57,7 @@
if (png_ptr == NULL)
return (NULL);
- /* added at libpng-1.2.6 */
+ /* Added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
@@ -137,7 +137,7 @@
}
}
- /* initialize zbuf - compression buffer */
+ /* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
@@ -192,7 +192,8 @@
png_size_t png_struct_size, png_size_t png_info_size)
{
/* We only come here via pre-1.0.12-compiled applications */
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
if (png_sizeof(png_struct) > png_struct_size ||
png_sizeof(png_info) > png_info_size)
@@ -246,7 +247,8 @@
png_structp png_ptr=*ptr_ptr;
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
do
{
@@ -266,7 +268,7 @@
png_debug(1, "in png_read_init_3");
#ifdef PNG_SETJMP_SUPPORTED
- /* save jump buffer and error functions */
+ /* Save jump buffer and error functions */
png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
#endif
@@ -277,21 +279,21 @@
png_ptr = *ptr_ptr;
}
- /* reset all variables to 0 */
+ /* Reset all variables to 0 */
png_memset(png_ptr, 0, png_sizeof(png_struct));
#ifdef PNG_SETJMP_SUPPORTED
- /* restore jump buffer */
+ /* Restore jump buffer */
png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
#endif
- /* added at libpng-1.2.6 */
+ /* Added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
#endif
- /* initialize zbuf - compression buffer */
+ /* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
@@ -326,7 +328,8 @@
void PNGAPI
png_read_info(png_structp png_ptr, png_infop info_ptr)
{
- if (png_ptr == NULL || info_ptr == NULL) return;
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
png_debug(1, "in png_read_info");
/* If we haven't checked all of the PNG signature bytes, do so now. */
if (png_ptr->sig_bytes < 8)
@@ -529,12 +532,13 @@
}
#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
-/* optional call to update the users info_ptr structure */
+/* Optional call to update the users info_ptr structure */
void PNGAPI
png_read_update_info(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_read_update_info");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
png_read_start_row(png_ptr);
else
@@ -553,7 +557,8 @@
png_start_read_image(png_structp png_ptr)
{
png_debug(1, "in png_start_read_image");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
png_read_start_row(png_ptr);
}
@@ -570,14 +575,15 @@
PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
#endif
int ret;
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_debug2(1, "in png_read_row (row %lu, pass %d)",
png_ptr->row_number, png_ptr->pass);
if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
png_read_start_row(png_ptr);
if (png_ptr->row_number == 0 && png_ptr->pass == 0)
{
- /* check for transforms that have been set but were defined out */
+ /* 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_READ_INVERT_SUPPORTED is not defined.");
@@ -609,7 +615,7 @@
}
#if defined(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 */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
switch (png_ptr->pass)
@@ -756,15 +762,15 @@
png_do_read_transformations(png_ptr);
#if defined(PNG_READ_INTERLACING_SUPPORTED)
- /* blow up interlaced rows to full size */
+ /* 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);
- */
+ /* 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);
if (dsp_row != NULL)
@@ -823,7 +829,8 @@
png_bytepp dp;
png_debug(1, "in png_read_rows");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
rp = row;
dp = display_row;
if (rp != NULL && dp != NULL)
@@ -872,7 +879,8 @@
png_bytepp rp;
png_debug(1, "in png_read_image");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
#ifdef PNG_READ_INTERLACING_SUPPORTED
pass = png_set_interlace_handling(png_ptr);
@@ -908,7 +916,8 @@
png_read_end(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_read_end");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */
do
@@ -1075,7 +1084,7 @@
}
#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
-/* free all memory used by the read */
+/* 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)
@@ -1147,7 +1156,7 @@
}
}
-/* free all memory used by the read (old method) */
+/* Free all memory used by the read (old method) */
void /* PRIVATE */
png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr)
{
@@ -1296,7 +1305,8 @@
void PNGAPI
png_set_read_status_fn(png_structp png_ptr, png_read_status_ptr read_row_fn)
{
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->read_row_fn = read_row_fn;
}
@@ -1310,9 +1320,10 @@
{
int row;
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
#if defined(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);
@@ -1328,10 +1339,10 @@
/* -------------- image transformations start here ------------------- */
#if defined(PNG_READ_16_TO_8_SUPPORTED)
- /* tell libpng to strip 16 bit/color files down to 8 bits per color
+ /* Tell libpng to strip 16 bit/color files down to 8 bits per color.
*/
if (transforms & PNG_TRANSFORM_STRIP_16)
- png_set_strip_16(png_ptr);
+ png_set_strip_16(png_ptr);
#endif
#if defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
@@ -1339,7 +1350,7 @@
* the background (not recommended).
*/
if (transforms & PNG_TRANSFORM_STRIP_ALPHA)
- png_set_strip_alpha(png_ptr);
+ png_set_strip_alpha(png_ptr);
#endif
#if defined(PNG_READ_PACK_SUPPORTED) && !defined(PNG_READ_EXPAND_SUPPORTED)
@@ -1347,7 +1358,7 @@
* byte into separate bytes (useful for paletted and grayscale images).
*/
if (transforms & PNG_TRANSFORM_PACKING)
- png_set_packing(png_ptr);
+ png_set_packing(png_ptr);
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED)
@@ -1355,7 +1366,7 @@
* (not useful if you are using png_set_packing).
*/
if (transforms & PNG_TRANSFORM_PACKSWAP)
- png_set_packswap(png_ptr);
+ png_set_packswap(png_ptr);
#endif
#if defined(PNG_READ_EXPAND_SUPPORTED)
@@ -1365,9 +1376,9 @@
* channels so the data will be available as RGBA quartets.
*/
if (transforms & PNG_TRANSFORM_EXPAND)
- if ((png_ptr->bit_depth < 8) ||
- (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ||
- (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
+ if ((png_ptr->bit_depth < 8) ||
+ (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ||
+ (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
png_set_expand(png_ptr);
#endif
@@ -1375,10 +1386,10 @@
*/
#if defined(PNG_READ_INVERT_SUPPORTED)
- /* invert monochrome files to have 0 as white and 1 as black
+ /* Invert monochrome files to have 0 as white and 1 as black
*/
if (transforms & PNG_TRANSFORM_INVERT_MONO)
- png_set_invert_mono(png_ptr);
+ png_set_invert_mono(png_ptr);
#endif
#if defined(PNG_READ_SHIFT_SUPPORTED)
@@ -1397,24 +1408,24 @@
#endif
#if defined(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);
+ png_set_bgr(png_ptr);
#endif
#if defined(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);
#endif
#if defined(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);
+ png_set_swap(png_ptr);
#endif
/* We don't handle adding filler bytes */
@@ -1447,10 +1458,10 @@
png_read_image(png_ptr, info_ptr->row_pointers);
info_ptr->valid |= PNG_INFO_IDAT;
- /* read rest of file, and get additional chunks in info_ptr - REQUIRED */
+ /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
png_read_end(png_ptr, info_ptr);
- transforms = transforms; /* quiet compiler warnings */
+ transforms = transforms; /* Quiet compiler warnings */
params = params;
}
diff --git a/pngrio.c b/pngrio.c
index d47d86d..2c8e6a7 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@
/* pngrio.c - functions for data input
*
- * Last changed in libpng 1.2.36 [May 7, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -20,10 +20,11 @@
#if defined(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
- buffering if you are using unbuffered reads. This should never be asked
- to read more then 64K on a 16 bit machine. */
+ * reads from a file pointer. Note that this routine sometimes gets called
+ * with very small lengths, so you should implement some kind of simple
+ * buffering if you are using unbuffered reads. This should never be asked
+ * to read more then 64K on a 16 bit machine.
+ */
void /* PRIVATE */
png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
@@ -36,16 +37,18 @@
#if !defined(PNG_NO_STDIO)
/* This is the function that does the actual reading of data. If you are
- not reading from a standard C stream, you should create a replacement
- read_data function and use it at run time with png_set_read_fn(), rather
- than changing the library. */
+ * not reading from a standard C stream, you should create a replacement
+ * 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
png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_size_t check;
- if (png_ptr == NULL) return;
+ 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.
*/
@@ -61,7 +64,7 @@
png_error(png_ptr, "Read Error");
}
#else
-/* this is the model-independent version. Since the standard I/O library
+/* 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.
*/
@@ -76,7 +79,8 @@
png_byte *n_data;
png_FILE_p io_ptr;
- if (png_ptr == NULL) return;
+ 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);
@@ -121,25 +125,27 @@
#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
- unsigned int that is the number of bytes to be read.
- To exit and output any fatal error messages the new write
- function should call png_error(png_ptr, "Error msg").
- May be NULL, in which case libpng's default function will
- be used. */
+ * 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
+ * unsigned int that is the number of bytes to be read.
+ * To exit and output any fatal error messages the new write
+ * function should call png_error(png_ptr, "Error msg").
+ * May be NULL, in which case libpng's default function will
+ * be used.
+ */
void PNGAPI
png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
png_rw_ptr read_data_fn)
{
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->io_ptr = io_ptr;
#if !defined(PNG_NO_STDIO)
diff --git a/pngrtran.c b/pngrtran.c
index d7dd8e7..af396df 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 1.2.35 [February 14, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -23,24 +23,29 @@
{
png_debug(1, "in png_set_crc_action");
/* Tell libpng how we react to CRC errors in critical chunks */
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
switch (crit_action)
{
- case PNG_CRC_NO_CHANGE: /* leave setting as is */
+ case PNG_CRC_NO_CHANGE: /* Leave setting as is */
break;
- case PNG_CRC_WARN_USE: /* warn/use data */
+
+ case PNG_CRC_WARN_USE: /* Warn/use data */
png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE;
break;
- case PNG_CRC_QUIET_USE: /* quiet/use data */
+
+ case PNG_CRC_QUIET_USE: /* Quiet/use data */
png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE |
PNG_FLAG_CRC_CRITICAL_IGNORE;
break;
- case PNG_CRC_WARN_DISCARD: /* not a valid action for critical data */
+
+ case PNG_CRC_WARN_DISCARD: /* Not a valid action for critical data */
png_warning(png_ptr,
"Can't discard critical data on CRC error.");
- case PNG_CRC_ERROR_QUIT: /* error/quit */
+ case PNG_CRC_ERROR_QUIT: /* Error/quit */
+
case PNG_CRC_DEFAULT:
default:
png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
@@ -49,22 +54,27 @@
switch (ancil_action)
{
- case PNG_CRC_NO_CHANGE: /* leave setting as is */
+ case PNG_CRC_NO_CHANGE: /* Leave setting as is */
break;
- case PNG_CRC_WARN_USE: /* warn/use data */
+
+ case PNG_CRC_WARN_USE: /* Warn/use data */
png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE;
break;
- case PNG_CRC_QUIET_USE: /* quiet/use data */
+
+ case PNG_CRC_QUIET_USE: /* Quiet/use data */
png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE |
PNG_FLAG_CRC_ANCILLARY_NOWARN;
break;
- case PNG_CRC_ERROR_QUIT: /* error/quit */
+
+ case PNG_CRC_ERROR_QUIT: /* Error/quit */
png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_NOWARN;
break;
- case PNG_CRC_WARN_DISCARD: /* warn/discard data */
+
+ case PNG_CRC_WARN_DISCARD: /* Warn/discard data */
+
case PNG_CRC_DEFAULT:
default:
png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
@@ -74,14 +84,15 @@
#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
defined(PNG_FLOATING_POINT_SUPPORTED)
-/* handle alpha and tRNS via a background color */
+/* 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)
{
png_debug(1, "in png_set_background");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
if (background_gamma_code == PNG_BACKGROUND_GAMMA_UNKNOWN)
{
png_warning(png_ptr, "Application must supply a known background gamma");
@@ -98,12 +109,13 @@
#endif
#if defined(PNG_READ_16_TO_8_SUPPORTED)
-/* strip 16 bit depth files to 8 bit depth */
+/* Strip 16 bit depth files to 8 bit depth */
void PNGAPI
png_set_strip_16(png_structp png_ptr)
{
png_debug(1, "in png_set_strip_16");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= PNG_16_TO_8;
}
#endif
@@ -113,7 +125,8 @@
png_set_strip_alpha(png_structp png_ptr)
{
png_debug(1, "in png_set_strip_alpha");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->flags |= PNG_FLAG_STRIP_ALPHA;
}
#endif
@@ -143,7 +156,8 @@
int full_dither)
{
png_debug(1, "in png_set_dither");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= PNG_DITHER;
if (!full_dither)
@@ -161,27 +175,29 @@
if (histogram != NULL)
{
/* This is easy enough, just throw out the least used colors.
- Perhaps not the best solution, but good enough. */
+ * Perhaps not the best solution, but good enough.
+ */
int i;
- /* initialize an array to sort colors */
+ /* Initialize an array to sort colors */
png_ptr->dither_sort = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(num_palette * png_sizeof(png_byte)));
- /* initialize the dither_sort array */
+ /* Initialize the dither_sort array */
for (i = 0; i < num_palette; i++)
png_ptr->dither_sort[i] = (png_byte)i;
/* Find the least used palette entries by starting a
- bubble sort, and running it until we have sorted
- out enough colors. Note that we don't care about
- sorting all the colors, just finding which are
- least used. */
+ * bubble sort, and running it until we have sorted
+ * out enough colors. Note that we don't care about
+ * sorting all the colors, just finding which are
+ * least used.
+ */
for (i = num_palette - 1; i >= maximum_colors; i--)
{
- int done; /* to stop early if the list is pre-sorted */
+ int done; /* To stop early if the list is pre-sorted */
int j;
done = 1;
@@ -202,13 +218,14 @@
break;
}
- /* swap the palette around, and set up a table, if necessary */
+ /* Swap the palette around, and set up a table, if necessary */
if (full_dither)
{
int j = num_palette;
- /* put all the useful colors within the max, but don't
- move the others */
+ /* Put all the useful colors within the max, but don't
+ * move the others.
+ */
for (i = 0; i < maximum_colors; i++)
{
if ((int)png_ptr->dither_sort[i] >= maximum_colors)
@@ -224,11 +241,12 @@
{
int j = num_palette;
- /* move all the used colors inside the max limit, and
- develop a translation table */
+ /* Move all the used colors inside the max limit, and
+ * develop a translation table.
+ */
for (i = 0; i < maximum_colors; i++)
{
- /* only move the colors we need to */
+ /* Only move the colors we need to */
if ((int)png_ptr->dither_sort[i] >= maximum_colors)
{
png_color tmp_color;
@@ -240,20 +258,20 @@
tmp_color = palette[j];
palette[j] = palette[i];
palette[i] = tmp_color;
- /* indicate where the color went */
+ /* Indicate where the color went */
png_ptr->dither_index[j] = (png_byte)i;
png_ptr->dither_index[i] = (png_byte)j;
}
}
- /* find closest color for those colors we are not using */
+ /* Find closest color for those colors we are not using */
for (i = 0; i < num_palette; i++)
{
if ((int)png_ptr->dither_index[i] >= maximum_colors)
{
int min_d, k, min_k, d_index;
- /* find the closest color to one we threw out */
+ /* Find the closest color to one we threw out */
d_index = png_ptr->dither_index[i];
min_d = PNG_COLOR_DIST(palette[d_index], palette[0]);
for (k = 1, min_k = 0; k < maximum_colors; k++)
@@ -268,7 +286,7 @@
min_k = k;
}
}
- /* point to closest color */
+ /* Point to closest color */
png_ptr->dither_index[i] = (png_byte)min_k;
}
}
@@ -279,13 +297,13 @@
else
{
/* This is much harder to do simply (and quickly). Perhaps
- we need to go through a median cut routine, but those
- don't always behave themselves with only a few colors
- as input. So we will just find the closest two colors,
- and throw out one of them (chosen somewhat randomly).
- [We don't understand this at all, so if someone wants to
- work on improving it, be our guest - AED, GRP]
- */
+ * we need to go through a median cut routine, but those
+ * don't always behave themselves with only a few colors
+ * as input. So we will just find the closest two colors,
+ * and throw out one of them (chosen somewhat randomly).
+ * [We don't understand this at all, so if someone wants to
+ * work on improving it, be our guest - AED, GRP]
+ */
int i;
int max_d;
int num_new_palette;
@@ -294,13 +312,13 @@
t = NULL;
- /* initialize palette index arrays */
+ /* 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_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(num_palette * png_sizeof(png_byte)));
- /* initialize the sort array */
+ /* Initialize the sort array */
for (i = 0; i < num_palette; i++)
{
png_ptr->index_to_palette[i] = (png_byte)i;
@@ -313,14 +331,14 @@
num_new_palette = num_palette;
- /* initial wild guess at how far apart the farthest pixel
- pair we will be eliminating will be. Larger
- numbers mean more areas will be allocated, Smaller
- numbers run the risk of not saving enough data, and
- having to do this all over again.
-
- I have not done extensive checking on this number.
- */
+ /* Initial wild guess at how far apart the farthest pixel
+ * pair we will be eliminating will be. Larger
+ * numbers mean more areas will be allocated, Smaller
+ * numbers run the risk of not saving enough data, and
+ * having to do this all over again.
+ *
+ * I have not done extensive checking on this number.
+ */
max_d = 96;
while (num_new_palette > maximum_colors)
@@ -523,7 +541,8 @@
png_set_gamma(png_structp png_ptr, double scrn_gamma, double file_gamma)
{
png_debug(1, "in png_set_gamma");
- if (png_ptr == NULL) return;
+ 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))
@@ -542,7 +561,8 @@
png_set_expand(png_structp png_ptr)
{
png_debug(1, "in png_set_expand");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
}
@@ -569,7 +589,8 @@
png_set_palette_to_rgb(png_structp png_ptr)
{
png_debug(1, "in png_set_palette_to_rgb");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
}
@@ -580,7 +601,8 @@
png_set_expand_gray_1_2_4_to_8(png_structp png_ptr)
{
png_debug(1, "in png_set_expand_gray_1_2_4_to_8");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= PNG_EXPAND;
png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
}
@@ -593,7 +615,8 @@
png_set_gray_1_2_4_to_8(png_structp png_ptr)
{
png_debug(1, "in png_set_gray_1_2_4_to_8");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
}
#endif
@@ -629,10 +652,11 @@
png_set_rgb_to_gray(png_structp png_ptr, int error_action, double red,
double green)
{
- int red_fixed = (int)((float)red*100000.0 + 0.5);
- int green_fixed = (int)((float)green*100000.0 + 0.5);
- if (png_ptr == NULL) return;
- png_set_rgb_to_gray_fixed(png_ptr, error_action, red_fixed, green_fixed);
+ int red_fixed = (int)((float)red*100000.0 + 0.5);
+ int green_fixed = (int)((float)green*100000.0 + 0.5);
+ if (png_ptr == NULL)
+ return;
+ png_set_rgb_to_gray_fixed(png_ptr, error_action, red_fixed, green_fixed);
}
#endif
@@ -641,13 +665,16 @@
png_fixed_point red, png_fixed_point green)
{
png_debug(1, "in png_set_rgb_to_gray");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
switch(error_action)
{
case 1: png_ptr->transformations |= PNG_RGB_TO_GRAY;
break;
+
case 2: png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN;
break;
+
case 3: png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR;
}
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
@@ -669,8 +696,8 @@
}
else if (red + green < 100000L)
{
- red_int = (png_uint_16)(((png_uint_32)red*32768L)/100000L);
- green_int = (png_uint_16)(((png_uint_32)green*32768L)/100000L);
+ red_int = (png_uint_16)(((png_uint_32)red*32768L)/100000L);
+ green_int = (png_uint_16)(((png_uint_32)green*32768L)/100000L);
}
else
{
@@ -694,7 +721,8 @@
read_user_transform_fn)
{
png_debug(1, "in png_set_read_user_transform_fn");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
png_ptr->transformations |= PNG_USER_TRANSFORM;
png_ptr->read_user_transform_fn = read_user_transform_fn;
@@ -727,8 +755,9 @@
#if 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
+ * 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
* background color might actually be gray yet not be flagged as such.
* This is not a problem for the current code, which uses
@@ -755,7 +784,7 @@
{
if (!(color_type & PNG_COLOR_MASK_COLOR)) /* i.e., GRAY or GRAY_ALPHA */
{
- /* expand background and tRNS chunks */
+ /* Expand background and tRNS chunks */
switch (png_ptr->bit_depth)
{
case 1:
@@ -769,6 +798,7 @@
= png_ptr->trans_values.blue = png_ptr->trans_values.gray;
}
break;
+
case 2:
png_ptr->background.gray *= (png_uint_16)0x55;
png_ptr->background.red = png_ptr->background.green
@@ -780,6 +810,7 @@
= png_ptr->trans_values.blue = png_ptr->trans_values.gray;
}
break;
+
case 4:
png_ptr->background.gray *= (png_uint_16)0x11;
png_ptr->background.red = png_ptr->background.green
@@ -791,7 +822,9 @@
= png_ptr->trans_values.blue = png_ptr->trans_values.gray;
}
break;
+
case 8:
+
case 16:
png_ptr->background.red = png_ptr->background.green
= png_ptr->background.blue = png_ptr->background.gray;
@@ -814,8 +847,9 @@
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 */
+ /* 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++)
@@ -842,7 +876,7 @@
for (i=0; i<png_ptr->num_trans; i++)
{
if (png_ptr->trans[i] != 0 && png_ptr->trans[i] != 0xff)
- k=1; /* partial transparency is present */
+ k=1; /* Partial transparency is present */
}
if (k == 0)
png_ptr->transformations &= ~PNG_GAMMA;
@@ -857,8 +891,7 @@
{
if (color_type == PNG_COLOR_TYPE_PALETTE)
{
- /* could skip if no transparency and
- */
+ /* Could skip if no transparency */
png_color back, back_1;
png_colorp palette = png_ptr->palette;
int num_palette = png_ptr->num_palette;
@@ -883,10 +916,12 @@
g = (png_ptr->screen_gamma);
gs = 1.0;
break;
+
case PNG_BACKGROUND_GAMMA_FILE:
g = 1.0 / (png_ptr->gamma);
gs = 1.0 / (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 *
@@ -975,10 +1010,12 @@
g = (png_ptr->screen_gamma);
gs = 1.0;
break;
+
case PNG_BACKGROUND_GAMMA_FILE:
g = 1.0 / (png_ptr->gamma);
gs = 1.0 / (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 *
@@ -1020,7 +1057,7 @@
}
}
else
- /* transformation does not include PNG_BACKGROUND */
+ /* Transformation does not include PNG_BACKGROUND */
#endif /* PNG_READ_BACKGROUND_SUPPORTED */
if (color_type == PNG_COLOR_TYPE_PALETTE)
{
@@ -1192,8 +1229,8 @@
if (png_ptr->transformations & PNG_DITHER)
{
if (((info_ptr->color_type == PNG_COLOR_TYPE_RGB) ||
- (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) &&
- png_ptr->palette_lookup && info_ptr->bit_depth == 8)
+ (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) &&
+ png_ptr->palette_lookup && info_ptr->bit_depth == 8)
{
info_ptr->color_type = PNG_COLOR_TYPE_PALETTE;
}
@@ -1227,7 +1264,7 @@
(info_ptr->color_type == PNG_COLOR_TYPE_GRAY)))
{
info_ptr->channels++;
- /* if adding a true alpha channel not just filler */
+ /* If adding a true alpha channel not just filler */
#if !defined(PNG_1_0_X)
if (png_ptr->transformations & PNG_ADD_ALPHA)
info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
@@ -1282,7 +1319,8 @@
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 */
+ * pixels. This check added to libpng-1.2.19
+ */
#if (PNG_WARN_UNINITIALIZED_ROW==1)
png_error(png_ptr, "Uninitialized row");
#else
@@ -1335,39 +1373,41 @@
}
#endif
-/*
-From Andreas Dilger e-mail to png-implement, 26 March 1998:
-
- In most cases, the "simple transparency" should be done prior to doing
- gray-to-RGB, or you will have to test 3x as many bytes to check if a
- pixel is transparent. You would also need to make sure that the
- transparency information is upgraded to RGB.
-
- To summarize, the current flow is:
- - Gray + simple transparency -> compare 1 or 2 gray bytes and composite
- with background "in place" if transparent,
- convert to RGB if necessary
- - Gray + alpha -> composite with gray background and remove alpha bytes,
- convert to RGB if necessary
-
- To support RGB backgrounds for gray images we need:
- - Gray + simple transparency -> convert to RGB + simple transparency, compare
- 3 or 6 bytes and composite with background
- "in place" if transparent (3x compare/pixel
- compared to doing composite with gray bkgrnd)
- - Gray + alpha -> convert to RGB + alpha, composite with background and
- remove alpha bytes (3x float operations/pixel
- compared with composite on gray background)
-
- Greg's change will do this. The reason it wasn't done before is for
- performance, as this increases the per-pixel operations. If we would check
- in advance if the background was gray or RGB, and position the gray-to-RGB
- transform appropriately, then it would save a lot of work/time.
+/* From Andreas Dilger e-mail to png-implement, 26 March 1998:
+ *
+ * In most cases, the "simple transparency" should be done prior to doing
+ * gray-to-RGB, or you will have to test 3x as many bytes to check if a
+ * pixel is transparent. You would also need to make sure that the
+ * transparency information is upgraded to RGB.
+ *
+ * To summarize, the current flow is:
+ * - Gray + simple transparency -> compare 1 or 2 gray bytes and composite
+ * with background "in place" if transparent,
+ * convert to RGB if necessary
+ * - Gray + alpha -> composite with gray background and remove alpha bytes,
+ * convert to RGB if necessary
+ *
+ * To support RGB backgrounds for gray images we need:
+ * - Gray + simple transparency -> convert to RGB + simple transparency,
+ * compare 3 or 6 bytes and composite with
+ * background "in place" if transparent
+ * (3x compare/pixel compared to doing
+ * composite with gray bkgrnd)
+ * - Gray + alpha -> convert to RGB + alpha, composite with background and
+ * remove alpha bytes (3x float
+ * operations/pixel compared with composite
+ * on gray background)
+ *
+ * Greg's change will do this. The reason it wasn't done before is for
+ * performance, as this increases the per-pixel operations. If we would check
+ * in advance if the background was gray or RGB, and position the gray-to-RGB
+ * transform appropriately, then it would save a lot of work/time.
*/
#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
- /* if gray -> RGB, do so now only if background is non-gray; else do later
- * for performance reasons */
+ /* If gray -> RGB, do so now only if background is non-gray; else do later
+ * for performance reasons
+ */
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);
@@ -1392,14 +1432,14 @@
#if defined(PNG_READ_GAMMA_SUPPORTED)
if ((png_ptr->transformations & PNG_GAMMA) &&
#if defined(PNG_READ_BACKGROUND_SUPPORTED)
- !((png_ptr->transformations & PNG_BACKGROUND) &&
- ((png_ptr->num_trans != 0) ||
- (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) &&
+ !((png_ptr->transformations & PNG_BACKGROUND) &&
+ ((png_ptr->num_trans != 0) ||
+ (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) &&
#endif
- (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE))
+ (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_ptr->gamma_table, png_ptr->gamma_16_table,
+ png_ptr->gamma_shift);
#endif
#if defined(PNG_READ_16_TO_8_SUPPORTED)
@@ -1444,7 +1484,7 @@
#endif
#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
- /* if gray -> RGB, do so now only if we did not do so above */
+ /* 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);
@@ -1475,16 +1515,16 @@
if (png_ptr->transformations & PNG_USER_TRANSFORM)
{
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->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 */
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
if (png_ptr->user_transform_depth)
png_ptr->row_info.bit_depth = png_ptr->user_transform_depth;
@@ -1542,6 +1582,7 @@
}
break;
}
+
case 2:
{
@@ -1563,6 +1604,7 @@
}
break;
}
+
case 4:
{
png_bytep sp = row + (png_size_t)((row_width - 1) >> 1);
@@ -1654,6 +1696,7 @@
}
break;
}
+
case 4:
{
png_bytep bp = row;
@@ -1669,6 +1712,7 @@
}
break;
}
+
case 8:
{
png_bytep bp = row;
@@ -1681,6 +1725,7 @@
}
break;
}
+
case 16:
{
png_bytep bp = row;
@@ -1702,7 +1747,7 @@
#endif
#if defined(PNG_READ_16_TO_8_SUPPORTED)
-/* chop rows of bit depth 16 down to 8 */
+/* Chop rows of bit depth 16 down to 8 */
void /* PRIVATE */
png_do_chop(png_row_infop row_info, png_bytep row)
{
@@ -1726,14 +1771,17 @@
*
* What the ideal calculation should be:
* *dp = (((((png_uint_32)(*sp) << 8) |
- * (png_uint_32)(*(sp + 1))) * 255 + 127) / (png_uint_32)65535L;
+ * (png_uint_32)(*(sp + 1))) * 255 + 127)
+ * / (png_uint_32)65535L;
*
* GRR: no, I think this is what it really should be:
* *dp = (((((png_uint_32)(*sp) << 8) |
- * (png_uint_32)(*(sp + 1))) + 128L) / (png_uint_32)257L;
+ * (png_uint_32)(*(sp + 1))) + 128L)
+ * / (png_uint_32)257L;
*
* GRR: here's the exact calculation with shifts:
- * temp = (((png_uint_32)(*sp) << 8) | (png_uint_32)(*(sp + 1))) + 128L;
+ * temp = (((png_uint_32)(*sp) << 8) |
+ * (png_uint_32)(*(sp + 1))) + 128L;
* *dp = (temp - (temp >> 8)) >> 8;
*
* Approximate calculation with shift/add instead of multiply/divide:
@@ -2123,7 +2171,7 @@
#endif
#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
-/* expand grayscale files to RGB, with or without alpha */
+/* Expand grayscale files to RGB, with or without alpha */
void /* PRIVATE */
png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
{
@@ -2206,7 +2254,7 @@
#endif
#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
-/* reduce RGB files to grayscale, with or without alpha
+/* 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:
@@ -2484,18 +2532,22 @@
num_palette = 2;
color_inc = 0xff;
break;
+
case 2:
num_palette = 4;
color_inc = 0x55;
break;
+
case 4:
num_palette = 16;
color_inc = 0x11;
break;
+
case 8:
num_palette = 256;
color_inc = 1;
break;
+
default:
num_palette = 0;
color_inc = 0;
@@ -2673,7 +2725,7 @@
}
}
}
- else /* assume grayscale palette (what else could it be?) */
+ else /* Assume grayscale palette (what else could it be?) */
{
int i;
@@ -2749,6 +2801,7 @@
}
break;
}
+
case 2:
{
#if defined(PNG_READ_GAMMA_SUPPORTED)
@@ -2805,6 +2858,7 @@
}
break;
}
+
case 4:
{
#if defined(PNG_READ_GAMMA_SUPPORTED)
@@ -2861,6 +2915,7 @@
}
break;
}
+
case 8:
{
#if defined(PNG_READ_GAMMA_SUPPORTED)
@@ -2893,6 +2948,7 @@
}
break;
}
+
case 16:
{
#if defined(PNG_READ_GAMMA_SUPPORTED)
@@ -2906,7 +2962,7 @@
v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
if (v == trans_values->gray)
{
- /* background is already in screen gamma */
+ /* Background is already in screen gamma */
*sp = (png_byte)((background->gray >> 8) & 0xff);
*(sp + 1) = (png_byte)(background->gray & 0xff);
}
@@ -2939,6 +2995,7 @@
}
break;
}
+
case PNG_COLOR_TYPE_RGB:
{
if (row_info->bit_depth == 8)
@@ -2996,7 +3053,7 @@
if (r == trans_values->red && g == trans_values->green &&
b == trans_values->blue)
{
- /* background is already in screen gamma */
+ /* 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);
@@ -3043,6 +3100,7 @@
}
break;
}
+
case PNG_COLOR_TYPE_GRAY_ALPHA:
{
if (row_info->bit_depth == 8)
@@ -3063,7 +3121,7 @@
}
else if (a == 0)
{
- /* background is already in screen gamma */
+ /* Background is already in screen gamma */
*dp = (png_byte)background->gray;
}
else
@@ -3130,7 +3188,7 @@
else
#endif
{
- /* background is already in screen gamma */
+ /* Background is already in screen gamma */
*dp = (png_byte)((background->gray >> 8) & 0xff);
*(dp + 1) = (png_byte)(background->gray & 0xff);
}
@@ -3185,6 +3243,7 @@
}
break;
}
+
case PNG_COLOR_TYPE_RGB_ALPHA:
{
if (row_info->bit_depth == 8)
@@ -3207,7 +3266,7 @@
}
else if (a == 0)
{
- /* background is already in screen gamma */
+ /* Background is already in screen gamma */
*dp = (png_byte)background->red;
*(dp + 1) = (png_byte)background->green;
*(dp + 2) = (png_byte)background->blue;
@@ -3288,7 +3347,7 @@
}
else if (a == 0)
{
- /* background is already in screen gamma */
+ /* 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);
@@ -3443,6 +3502,7 @@
}
break;
}
+
case PNG_COLOR_TYPE_RGB_ALPHA:
{
if (row_info->bit_depth == 8)
@@ -3480,6 +3540,7 @@
}
break;
}
+
case PNG_COLOR_TYPE_GRAY_ALPHA:
{
if (row_info->bit_depth == 8)
@@ -3504,6 +3565,7 @@
}
break;
}
+
case PNG_COLOR_TYPE_GRAY:
{
if (row_info->bit_depth == 2)
@@ -3524,6 +3586,7 @@
sp++;
}
}
+
if (row_info->bit_depth == 4)
{
sp = row;
@@ -3537,6 +3600,7 @@
sp++;
}
}
+
else if (row_info->bit_depth == 8)
{
sp = row;
@@ -3546,6 +3610,7 @@
sp++;
}
}
+
else if (row_info->bit_depth == 16)
{
sp = row;
@@ -3611,6 +3676,7 @@
}
break;
}
+
case 2:
{
sp = row + (png_size_t)((row_width - 1) >> 2);
@@ -3632,6 +3698,7 @@
}
break;
}
+
case 4:
{
sp = row + (png_size_t)((row_width - 1) >> 1);
@@ -3696,6 +3763,7 @@
*dp-- = palette[*sp].red;
sp--;
}
+
row_info->bit_depth = 8;
row_info->pixel_depth = 24;
row_info->rowbytes = row_width * 3;
@@ -3757,6 +3825,7 @@
}
break;
}
+
case 2:
{
gray = (png_uint_16)((gray&0x03)*0x55);
@@ -3780,6 +3849,7 @@
}
break;
}
+
case 4:
{
gray = (png_uint_16)((gray&0x0f)*0x11);
@@ -3803,6 +3873,7 @@
break;
}
}
+
row_info->bit_depth = 8;
row_info->pixel_depth = 8;
row_info->rowbytes = row_width;
@@ -3824,6 +3895,7 @@
*dp-- = *sp--;
}
}
+
else if (row_info->bit_depth == 16)
{
png_byte gray_high = (gray >> 8) & 0xff;
@@ -3846,6 +3918,7 @@
*dp-- = *sp--;
}
}
+
row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
row_info->channels = 2;
row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1);
@@ -3943,13 +4016,13 @@
g = *sp++;
b = *sp++;
- /* this looks real messy, but the compiler will reduce
- it down to a reasonable formula. For example, with
- 5 bits per color, we get:
- p = (((r >> 3) & 0x1f) << 10) |
- (((g >> 3) & 0x1f) << 5) |
- ((b >> 3) & 0x1f);
- */
+ /* This looks real messy, but the compiler will reduce
+ * it down to a reasonable formula. For example, with
+ * 5 bits per color, we get:
+ * p = (((r >> 3) & 0x1f) << 10) |
+ * (((g >> 3) & 0x1f) << 5) |
+ * ((b >> 3) & 0x1f);
+ */
p = (((r >> (8 - PNG_DITHER_RED_BITS)) &
((1 << PNG_DITHER_RED_BITS) - 1)) <<
(PNG_DITHER_GREEN_BITS + PNG_DITHER_BLUE_BITS)) |
@@ -4030,6 +4103,7 @@
if (png_ptr->screen_gamma > .000001)
g = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma);
+
else
g = 1.0;
@@ -4064,8 +4138,9 @@
if (png_ptr->screen_gamma > 0.000001)
g = 1.0 / png_ptr->screen_gamma;
+
else
- g = png_ptr->gamma; /* probably doing rgb_to_gray */
+ g = png_ptr->gamma; /* Probably doing rgb_to_gray */
for (i = 0; i < 256; i++)
{
@@ -4086,8 +4161,10 @@
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;
}
@@ -4098,6 +4175,7 @@
if (sig_bit > 0)
shift = 16 - sig_bit;
+
else
shift = 0;
@@ -4109,6 +4187,7 @@
if (shift > 8)
shift = 8;
+
if (shift < 0)
shift = 0;
@@ -4166,6 +4245,7 @@
(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] =
@@ -4203,8 +4283,9 @@
if (png_ptr->screen_gamma > 0.000001)
g = 1.0 / png_ptr->screen_gamma;
+
else
- g = png_ptr->gamma; /* probably doing rgb_to_gray */
+ g = png_ptr->gamma; /* Probably doing rgb_to_gray */
png_ptr->gamma_16_from_1 = (png_uint_16pp)png_malloc(png_ptr,
(png_uint_32)(num * png_sizeof(png_uint_16p)));
@@ -4218,6 +4299,7 @@
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] =
@@ -4234,7 +4316,7 @@
#endif
#if defined(PNG_MNG_FEATURES_SUPPORTED)
-/* undoes intrapixel differencing */
+/* Undoes intrapixel differencing */
void /* PRIVATE */
png_do_read_intrapixel(png_row_infop row_info, png_bytep row)
{
@@ -4254,8 +4336,10 @@
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;
@@ -4272,8 +4356,10 @@
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;
diff --git a/pngrutil.c b/pngrutil.c
index f6f9859..ae1e3f7 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
- * Last changed in libpng 1.2.36 [May 7, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -21,7 +21,7 @@
#ifdef PNG_FLOATING_POINT_SUPPORTED
# if defined(WIN32_WCE_OLD)
-/* strtod() function is not supported on WindowsCE */
+/* The strtod() function is not supported on WindowsCE */
__inline double png_strtod(png_structp png_ptr, PNG_CONST char *nptr, char **endptr)
{
double result = 0;
@@ -76,7 +76,8 @@
/* Grab a signed 32-bit integer from a buffer in big-endian format. The
* data is stored in the PNG file in two's complement format, and it is
- * assumed that the machine format for signed integers is the same. */
+ * assumed that the machine format for signed integers is the same.
+ */
png_int_32 PNGAPI
png_get_int_32(png_bytep buf)
{
@@ -108,21 +109,21 @@
png_byte buf[8];
png_uint_32 length;
- /* read the length and the chunk name */
+ /* Read the length and the chunk name */
png_read_data(png_ptr, buf, 8);
length = png_get_uint_31(png_ptr, buf);
- /* put the chunk name into png_ptr->chunk_name */
+ /* Put the chunk name into png_ptr->chunk_name */
png_memcpy(png_ptr->chunk_name, buf + 4, 4);
png_debug2(0, "Reading %s chunk, length = %lu",
png_ptr->chunk_name, length);
- /* reset the crc and run it over the chunk name */
+ /* 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);
- /* check to see if chunk name is valid */
+ /* Check to see if chunk name is valid */
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
return length;
@@ -132,15 +133,17 @@
void /* PRIVATE */
png_crc_read(png_structp png_ptr, png_bytep buf, png_size_t length)
{
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_read_data(png_ptr, buf, length);
png_calculate_crc(png_ptr, buf, length);
}
/* Optionally skip data and then check the CRC. Depending on whether we
- are reading a ancillary or critical chunk, and how the program has set
- things up, we may calculate the CRC on the data and print a message.
- Returns '1' if there was a CRC error, '0' otherwise. */
+ * are reading a ancillary or critical chunk, and how the program has set
+ * things up, we may calculate the CRC on the data and print a message.
+ * Returns '1' if there was a CRC error, '0' otherwise.
+ */
int /* PRIVATE */
png_crc_finish(png_structp png_ptr, png_uint_32 skip)
{
@@ -159,7 +162,7 @@
if (png_crc_error(png_ptr))
{
if (((png_ptr->chunk_name[0] & 0x20) && /* Ancillary */
- !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)) ||
+ !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)) ||
(!(png_ptr->chunk_name[0] & 0x20) && /* Critical */
(png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE)))
{
@@ -176,7 +179,8 @@
}
/* Compare the CRC stored in the PNG file with that calculated by libpng from
- the data it has read thus far. */
+ * the data it has read thus far.
+ */
int /* PRIVATE */
png_crc_error(png_structp png_ptr)
{
@@ -331,14 +335,17 @@
png_snprintf(umsg, 52,
"Buffer error in compressed datastream in %s chunk",
png_ptr->chunk_name);
+
else if (ret == Z_DATA_ERROR)
png_snprintf(umsg, 52,
"Data error in compressed datastream in %s chunk",
png_ptr->chunk_name);
+
else
png_snprintf(umsg, 52,
"Incomplete compressed datastream in %s chunk",
png_ptr->chunk_name);
+
png_warning(png_ptr, umsg);
#else
png_warning(png_ptr,
@@ -383,7 +390,7 @@
}
#endif
-/* read and check the IDHR chunk */
+/* Read and check the IDHR chunk */
void /* PRIVATE */
png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@@ -397,7 +404,7 @@
if (png_ptr->mode & PNG_HAVE_IHDR)
png_error(png_ptr, "Out of place IHDR");
- /* check the length */
+ /* Check the length */
if (length != 13)
png_error(png_ptr, "Invalid IHDR chunk");
@@ -414,7 +421,7 @@
filter_type = buf[11];
interlace_type = buf[12];
- /* set internal variables */
+ /* Set internal variables */
png_ptr->width = width;
png_ptr->height = height;
png_ptr->bit_depth = (png_byte)bit_depth;
@@ -425,25 +432,28 @@
#endif
png_ptr->compression_type = (png_byte)compression_type;
- /* find number of channels */
+ /* Find number of channels */
switch (png_ptr->color_type)
{
case PNG_COLOR_TYPE_GRAY:
case PNG_COLOR_TYPE_PALETTE:
png_ptr->channels = 1;
break;
+
case PNG_COLOR_TYPE_RGB:
png_ptr->channels = 3;
break;
+
case PNG_COLOR_TYPE_GRAY_ALPHA:
png_ptr->channels = 2;
break;
+
case PNG_COLOR_TYPE_RGB_ALPHA:
png_ptr->channels = 4;
break;
}
- /* set up other useful info */
+ /* Set up other useful info */
png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth *
png_ptr->channels);
png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width);
@@ -454,7 +464,7 @@
color_type, interlace_type, compression_type, filter_type);
}
-/* read and check the palette */
+/* Read and check the palette */
void /* PRIVATE */
png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@@ -468,12 +478,14 @@
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before PLTE");
+
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid PLTE after IDAT");
png_crc_finish(png_ptr, length);
return;
}
+
else if (png_ptr->mode & PNG_HAVE_PLTE)
png_error(png_ptr, "Duplicate PLTE chunk");
@@ -502,6 +514,7 @@
png_crc_finish(png_ptr, length);
return;
}
+
else
{
png_error(png_ptr, "Invalid palette chunk");
@@ -526,7 +539,7 @@
png_byte buf[3];
png_crc_read(png_ptr, buf, 3);
- /* don't depend upon png_color being any order */
+ /* Don't depend upon png_color being any order */
palette[i].red = buf[0];
palette[i].green = buf[1];
palette[i].blue = buf[2];
@@ -534,9 +547,10 @@
#endif
/* 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. */
+ * 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.
+ */
#if !defined(PNG_READ_OPT_PLTE_SUPPORTED)
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
#endif
@@ -611,7 +625,7 @@
}
png_crc_finish(png_ptr, length);
- info_ptr = info_ptr; /* quiet compiler warnings about unused info_ptr */
+ info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */
}
#if defined(PNG_READ_gAMA_SUPPORTED)
@@ -661,7 +675,7 @@
return;
igamma = (png_fixed_point)png_get_uint_32(buf);
- /* check for zero gamma */
+ /* Check for zero gamma */
if (igamma == 0)
{
png_warning(png_ptr,
@@ -925,7 +939,7 @@
return;
intent = buf[0];
- /* check for bad intent */
+ /* Check for bad intent */
if (intent >= PNG_sRGB_INTENT_LAST)
{
png_warning(png_ptr, "Unknown sRGB intent");
@@ -1040,12 +1054,13 @@
png_ptr->chunkdata[slength] = 0x00;
for (profile = png_ptr->chunkdata; *profile; profile++)
- /* empty loop to find end of name */ ;
+ /* Empty loop to find end of name */ ;
++profile;
- /* there should be at least one zero (the compression type byte)
- following the separator, and we should be on it */
+ /* 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)
{
png_free(png_ptr, png_ptr->chunkdata);
@@ -1054,7 +1069,7 @@
return;
}
- /* compression_type should always be zero */
+ /* Compression_type should always be zero */
compression_type = *profile++;
if (compression_type)
{
@@ -1152,10 +1167,10 @@
png_ptr->chunkdata[slength] = 0x00;
for (entry_start = (png_bytep)png_ptr->chunkdata; *entry_start; entry_start++)
- /* empty loop to find end of name */ ;
+ /* Empty loop to find end of name */ ;
++entry_start;
- /* a sample depth should follow the separator, and we should be on it */
+ /* A sample depth should follow the separator, and we should be on it */
if (entry_start > (png_bytep)png_ptr->chunkdata + slength - 2)
{
png_free(png_ptr, png_ptr->chunkdata);
@@ -1168,7 +1183,7 @@
entry_size = (new_palette.depth == 8 ? 6 : 10);
data_length = (slength - (entry_start - (png_bytep)png_ptr->chunkdata));
- /* integrity-check the data length */
+ /* Integrity-check the data length */
if (data_length % entry_size)
{
png_free(png_ptr, png_ptr->chunkdata);
@@ -1236,7 +1251,7 @@
}
#endif
- /* discard all chunk data except the name and stash that */
+ /* Discard all chunk data except the name and stash that */
new_palette.name = png_ptr->chunkdata;
png_set_sPLT(png_ptr, info_ptr, &new_palette, 1);
@@ -1572,7 +1587,7 @@
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
-/* read the pCAL chunk (described in the PNG Extensions document) */
+/* Read the pCAL chunk (described in the PNG Extensions document) */
void /* PRIVATE */
png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@@ -1619,11 +1634,11 @@
return;
}
- png_ptr->chunkdata[slength] = 0x00; /* null terminate the last string */
+ png_ptr->chunkdata[slength] = 0x00; /* Null terminate the last string */
png_debug(3, "Finding end of pCAL purpose string");
for (buf = png_ptr->chunkdata; *buf; buf++)
- /* empty loop */ ;
+ /* Empty loop */ ;
endptr = png_ptr->chunkdata + slength;
@@ -1706,7 +1721,7 @@
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
-/* read the sCAL chunk */
+/* Read the sCAL chunk */
void /* PRIVATE */
png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@@ -1756,9 +1771,9 @@
return;
}
- png_ptr->chunkdata[slength] = 0x00; /* null terminate the last string */
+ png_ptr->chunkdata[slength] = 0x00; /* Null terminate the last string */
- ep = png_ptr->chunkdata + 1; /* skip unit byte */
+ ep = png_ptr->chunkdata + 1; /* Skip unit byte */
#ifdef PNG_FLOATING_POINT_SUPPORTED
width = png_strtod(png_ptr, ep, &vp);
@@ -1780,7 +1795,7 @@
#endif
for (ep = png_ptr->chunkdata; *ep; ep++)
- /* empty loop */ ;
+ /* Empty loop */ ;
ep++;
if (png_ptr->chunkdata + slength < ep)
@@ -1944,7 +1959,7 @@
key[slength] = 0x00;
for (text = key; *text; text++)
- /* empty loop to find end of key */ ;
+ /* Empty loop to find end of key */ ;
if (text != key + slength)
text++;
@@ -1979,7 +1994,7 @@
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
-/* note: this does not correctly handle chunks that are > 64K under DOS */
+/* Note: this does not correctly handle chunks that are > 64K under DOS */
void /* PRIVATE */
png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@@ -2028,7 +2043,7 @@
png_ptr->chunkdata[slength] = 0x00;
for (text = png_ptr->chunkdata; *text; text++)
- /* empty loop */ ;
+ /* Empty loop */ ;
/* zTXt must have some text after the chunkdataword */
if (text >= png_ptr->chunkdata + slength - 2)
@@ -2046,7 +2061,7 @@
png_warning(png_ptr, "Unknown compression type in zTXt chunk");
comp_type = PNG_TEXT_COMPRESSION_zTXt;
}
- text++; /* skip the compression_method byte */
+ text++; /* Skip the compression_method byte */
}
prefix_len = text - png_ptr->chunkdata;
@@ -2083,7 +2098,7 @@
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
-/* note: this does not correctly handle chunks that are > 64K under DOS */
+/* Note: this does not correctly handle chunks that are > 64K under DOS */
void /* PRIVATE */
png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@@ -2133,12 +2148,13 @@
png_ptr->chunkdata[slength] = 0x00;
for (lang = png_ptr->chunkdata; *lang; lang++)
- /* empty loop */ ;
- lang++; /* skip NUL separator */
+ /* Empty loop */ ;
+ lang++; /* Skip NUL separator */
/* iTXt must have a language tag (possibly empty), two compression bytes,
- translated keyword (possibly empty), and possibly some text after the
- keyword */
+ * translated keyword (possibly empty), and possibly some text after the
+ * keyword
+ */
if (lang >= png_ptr->chunkdata + slength - 3)
{
@@ -2154,8 +2170,8 @@
}
for (lang_key = lang; *lang_key; lang_key++)
- /* empty loop */ ;
- lang_key++; /* skip NUL separator */
+ /* Empty loop */ ;
+ lang_key++; /* Skip NUL separator */
if (lang_key >= png_ptr->chunkdata + slength)
{
@@ -2166,8 +2182,8 @@
}
for (text = lang_key; *text; text++)
- /* empty loop */ ;
- text++; /* skip NUL separator */
+ /* Empty loop */ ;
+ text++; /* Skip NUL separator */
if (text >= png_ptr->chunkdata + slength)
{
png_warning(png_ptr, "Malformed iTXt chunk");
@@ -2229,7 +2245,7 @@
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_CONST PNG_IDAT;
#endif
- if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) /* not an IDAT */
+ if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) /* Not an IDAT */
png_ptr->mode |= PNG_AFTER_IDAT;
}
@@ -2273,7 +2289,7 @@
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
if (png_ptr->read_user_chunk_fn != NULL)
{
- /* callback to user unknown chunk handler */
+ /* Callback to user unknown chunk handler */
int ret;
ret = (*(png_ptr->read_user_chunk_fn))
(png_ptr, &png_ptr->unknown_chunk);
@@ -2302,7 +2318,7 @@
png_crc_finish(png_ptr, skip);
#if !defined(PNG_READ_USER_CHUNKS_SUPPORTED)
- info_ptr = info_ptr; /* quiet compiler warnings about unused info_ptr */
+ info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */
#endif
}
@@ -2550,8 +2566,8 @@
int pass = png_ptr->pass;
png_uint_32 transformations = png_ptr->transformations;
#ifdef PNG_USE_LOCAL_ARRAYS
- /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
- /* offset to next interlace block */
+ /* 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};
#endif
@@ -2759,7 +2775,7 @@
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width);
}
#if !defined(PNG_READ_PACKSWAP_SUPPORTED)
- transformations = transformations; /* silence compiler warning */
+ transformations = transformations; /* Silence compiler warning */
#endif
}
#endif /* PNG_READ_INTERLACING_SUPPORTED */
@@ -2843,7 +2859,7 @@
rp++;
}
- for (i = 0; i < istop; i++) /* use leftover rp,pp */
+ for (i = 0; i < istop; i++) /* Use leftover rp,pp */
{
int a, b, c, pa, pb, pc, p;
@@ -2887,23 +2903,24 @@
}
}
+#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
void /* PRIVATE */
png_read_finish_row(png_structp png_ptr)
{
#ifdef PNG_USE_LOCAL_ARRAYS
#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
- /* start of interlace block */
+ /* Start of interlace block */
PNG_CONST int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
- /* offset to next interlace block */
+ /* Offset to next interlace block */
PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
- /* start of interlace block in the y direction */
+ /* Start of interlace block in the y direction */
PNG_CONST int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
- /* offset to next interlace block in the y direction */
+ /* Offset to next interlace block in the y direction */
PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif /* PNG_READ_INTERLACING_SUPPORTED */
#endif
@@ -3018,24 +3035,25 @@
png_ptr->mode |= PNG_AFTER_IDAT;
}
+#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
void /* PRIVATE */
png_read_start_row(png_structp png_ptr)
{
#ifdef PNG_USE_LOCAL_ARRAYS
#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
- /* start of interlace block */
+ /* Start of interlace block */
PNG_CONST int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
- /* offset to next interlace block */
+ /* Offset to next interlace block */
PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
- /* start of interlace block in the y direction */
+ /* Start of interlace block in the y direction */
PNG_CONST int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
- /* offset to next interlace block in the y direction */
+ /* Offset to next interlace block in the y direction */
PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
#endif
@@ -3172,11 +3190,13 @@
}
#endif
- /* align the width on the next larger 8 pixels. Mainly used
- for interlacing */
+ /* Align the width on the next larger 8 pixels. Mainly used
+ * for interlacing
+ */
row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7));
- /* calculate the maximum bytes needed, adding a byte and a pixel
- for safety's sake */
+ /* Calculate the maximum bytes needed, adding a byte and a pixel
+ * for safety's sake
+ */
row_bytes = PNG_ROWBYTES(max_pixel_depth, row_bytes) +
1 + ((max_pixel_depth + 7) >> 3);
#ifdef PNG_MAX_MALLOC_64K
@@ -3187,29 +3207,30 @@
if (row_bytes + 64 > png_ptr->old_big_row_buf_size)
{
png_free(png_ptr, png_ptr->big_row_buf);
- png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 64);
+ png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 64);
if (png_ptr->interlaced)
- png_memset(png_ptr->big_row_buf, 0, png_ptr->rowbytes + 64);
+ png_memset(png_ptr->big_row_buf, 0, row_bytes + 64);
png_ptr->row_buf = png_ptr->big_row_buf + 32;
png_ptr->old_big_row_buf_size = row_bytes + 64;
}
#ifdef PNG_MAX_MALLOC_64K
- if ((png_uint_32)png_ptr->rowbytes + 1 > (png_uint_32)65536L)
+ if ((png_uint_32)row_bytes + 1 > (png_uint_32)65536L)
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))
+ if ((png_uint_32)row_bytes > (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)
+ if (row_bytes + 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;
+ png_free(png_ptr, png_ptr->prev_row);
+ png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
+ row_bytes + 1));
+ png_memset_check(png_ptr, png_ptr->prev_row, 0, row_bytes + 1);
+ png_ptr->old_prev_row_size = row_bytes + 1;
}
- png_memset_check(png_ptr, png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
+ png_ptr->rowbytes = row_bytes;
png_debug1(3, "width = %lu,", png_ptr->width);
png_debug1(3, "height = %lu,", png_ptr->height);
diff --git a/pngset.c b/pngset.c
index 9aa29f1..fa68a2d 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
- * Last changed in libpng 1.2.36 [May 7, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -79,25 +79,25 @@
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.);
+ 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->valid |= PNG_INFO_cHRM;
+ info_ptr->valid |= PNG_INFO_cHRM;
}
}
#endif /* PNG_FIXED_POINT_SUPPORTED */
@@ -140,20 +140,20 @@
if (png_ptr == NULL || info_ptr == NULL)
return;
- if (int_gamma > (png_fixed_point) PNG_UINT_31_MAX)
+ 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;
+ 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;
+ 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.);
@@ -179,26 +179,27 @@
if (info_ptr->num_palette == 0 || info_ptr->num_palette
> PNG_MAX_PALETTE_LENGTH)
{
- png_warning(png_ptr,
- "Invalid palette size, hIST allocation skipped.");
- return;
+ png_warning(png_ptr,
+ "Invalid palette size, hIST allocation skipped.");
+ return;
}
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
#endif
- /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in version
- 1.2.1 */
+ /* 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_uint_32)(PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16)));
if (png_ptr->hist == NULL)
- {
- png_warning(png_ptr, "Insufficient memory for hIST chunk data.");
- return;
- }
+ {
+ png_warning(png_ptr, "Insufficient memory for hIST chunk data.");
+ return;
+ }
for (i = 0; i < info_ptr->num_palette; i++)
- png_ptr->hist[i] = hist[i];
+ png_ptr->hist[i] = hist[i];
info_ptr->hist = png_ptr->hist;
info_ptr->valid |= PNG_INFO_hIST;
@@ -220,7 +221,7 @@
if (png_ptr == NULL || info_ptr == NULL)
return;
- /* check for width and height valid values */
+ /* Check for width and height valid values */
if (width == 0 || height == 0)
png_error(png_ptr, "Image width or height is zero in IHDR");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
@@ -240,13 +241,13 @@
- 8) /* extra max_pixel_depth pad */
png_warning(png_ptr, "Width is too large for libpng to process pixels");
- /* check other values */
+ /* Check other values */
if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
bit_depth != 8 && bit_depth != 16)
png_error(png_ptr, "Invalid bit depth in IHDR");
if (color_type < 0 || color_type == 1 ||
- color_type == 5 || color_type > 6)
+ color_type == 5 || color_type > 6)
png_error(png_ptr, "Invalid color type in IHDR");
if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
@@ -276,9 +277,9 @@
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 ||
+ (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_error(png_ptr, "Unknown filter method in IHDR");
if (png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)
@@ -306,7 +307,7 @@
info_ptr->channels++;
info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
- /* check for potential overflow */
+ /* Check for potential overflow */
if (width > (PNG_UINT_32_MAX
>> 3) /* 8-byte RGBA pixels */
- 64 /* bigrowbuf hack */
@@ -496,15 +497,15 @@
return;
if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH)
- {
- if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_error(png_ptr, "Invalid palette length");
- else
- {
+ else
+ {
png_warning(png_ptr, "Invalid palette length");
return;
- }
- }
+ }
+ }
/*
* It may not actually be necessary to set png_ptr->palette here;
@@ -516,8 +517,9 @@
#endif
/* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead
- of num_palette entries,
- in case of an invalid PNG file that has too-large sample values. */
+ * of num_palette entries, in case of an invalid PNG file that has
+ * too-large sample values.
+ */
png_ptr->palette = (png_colorp)png_malloc(png_ptr,
PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color));
png_memset(png_ptr->palette, 0, PNG_MAX_PALETTE_LENGTH *
@@ -620,18 +622,18 @@
#if !defined(PNG_NO_CHECK_cHRM)
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))
+ 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_FIXED_POINT_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);
+ 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);
+ white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
#endif
}
#endif /* cHRM */
@@ -689,17 +691,17 @@
#if defined(PNG_TEXT_SUPPORTED)
void PNGAPI
png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
- int num_text)
+ 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");
+ 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)
+ int num_text)
{
int i;
@@ -725,10 +727,10 @@
info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
(png_uint_32)(info_ptr->max_text * png_sizeof(png_text)));
if (info_ptr->text == NULL)
- {
- png_free(png_ptr, old_text);
- return(1);
- }
+ {
+ 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_free(png_ptr, old_text);
@@ -740,7 +742,7 @@
info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
(png_uint_32)(info_ptr->max_text * png_sizeof(png_text)));
if (info_ptr->text == NULL)
- return(1);
+ return(1);
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_TEXT;
#endif
@@ -761,26 +763,26 @@
if (text_ptr[i].compression <= 0)
{
- lang_len = 0;
- lang_key_len = 0;
+ lang_len = 0;
+ lang_key_len = 0;
}
else
#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;
+ /* 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_warning(png_ptr, "iTXt chunk not supported.");
- continue;
+ png_warning(png_ptr, "iTXt chunk not supported.");
+ continue;
}
#endif
@@ -804,14 +806,13 @@
(png_uint_32)
(key_len + text_length + lang_len + lang_key_len + 4));
if (textp->key == NULL)
- return(1);
+ return(1);
png_debug2(2, "Allocated %lu bytes at %x in png_set_text",
- (png_uint_32)
- (key_len + lang_len + lang_key_len + text_length + 4),
- (int)textp->key);
+ (png_uint_32)
+ (key_len + lang_len + lang_key_len + text_length + 4),
+ (int)textp->key);
- png_memcpy(textp->key, text_ptr[i].key,
- (png_size_t)(key_len));
+ 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)
@@ -898,7 +899,7 @@
png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr,
(png_uint_32)PNG_MAX_PALETTE_LENGTH);
if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
- png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans);
+ png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans);
}
if (trans_values != NULL)
@@ -910,12 +911,12 @@
((int)trans_values->red > sample_max ||
(int)trans_values->green > sample_max ||
(int)trans_values->blue > sample_max)))
- png_warning(png_ptr,
- "tRNS chunk has out-of-range samples for bit_depth");
+ png_warning(png_ptr,
+ "tRNS chunk has out-of-range samples for bit_depth");
png_memcpy(&(info_ptr->trans_values), trans_values,
png_sizeof(png_color_16));
if (num_trans == 0)
- num_trans = 1;
+ num_trans = 1;
}
info_ptr->num_trans = (png_uint_16)num_trans;
@@ -943,62 +944,62 @@
* added.
*/
{
- png_sPLT_tp np;
- int i;
+ png_sPLT_tp np;
+ int i;
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- np = (png_sPLT_tp)png_malloc_warn(png_ptr,
- (info_ptr->splt_palettes_num + nentries) *
- (png_uint_32)png_sizeof(png_sPLT_t));
- if (np == NULL)
- {
- png_warning(png_ptr, "No memory for sPLT palettes.");
+ if (png_ptr == NULL || info_ptr == NULL)
return;
- }
- 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;
+ np = (png_sPLT_tp)png_malloc_warn(png_ptr,
+ (info_ptr->splt_palettes_num + nentries) *
+ (png_uint_32)png_sizeof(png_sPLT_t));
+ if (np == NULL)
+ {
+ png_warning(png_ptr, "No memory for sPLT palettes.");
+ return;
+ }
- 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_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;
- length = png_strlen(from->name) + 1;
+ 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;
+
+ length = png_strlen(from->name) + 1;
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");
- continue;
- }
- png_memcpy(to->name, from->name, length);
- to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr,
+ if (to->name == NULL)
+ {
+ png_warning(png_ptr,
+ "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_uint_32)(from->nentries * png_sizeof(png_sPLT_entry)));
- if (to->entries == NULL)
- {
- png_warning(png_ptr,
- "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;
- }
+ if (to->entries == NULL)
+ {
+ png_warning(png_ptr,
+ "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;
+ }
- info_ptr->splt_palettes = np;
- info_ptr->splt_palettes_num += nentries;
- info_ptr->valid |= PNG_INFO_sPLT;
+ info_ptr->splt_palettes = np;
+ info_ptr->splt_palettes_num += nentries;
+ info_ptr->valid |= PNG_INFO_sPLT;
#ifdef PNG_FREE_ME_SUPPORTED
- info_ptr->free_me |= PNG_FREE_SPLT;
+ info_ptr->free_me |= PNG_FREE_SPLT;
#endif
}
#endif /* PNG_sPLT_SUPPORTED */
@@ -1008,61 +1009,61 @@
png_set_unknown_chunks(png_structp png_ptr,
png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
{
- png_unknown_chunkp np;
- int i;
+ png_unknown_chunkp np;
+ int i;
- if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0)
- return;
-
- np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
- (png_uint_32)((info_ptr->unknown_chunks_num + num_unknowns) *
- png_sizeof(png_unknown_chunk)));
- if (np == NULL)
- {
- png_warning(png_ptr,
- "Out of memory while processing unknown chunk.");
+ if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0)
return;
- }
- png_memcpy(np, info_ptr->unknown_chunks,
- info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk));
- png_free(png_ptr, info_ptr->unknown_chunks);
- info_ptr->unknown_chunks=NULL;
+ np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
+ (png_uint_32)((info_ptr->unknown_chunks_num + num_unknowns) *
+ png_sizeof(png_unknown_chunk)));
+ if (np == NULL)
+ {
+ png_warning(png_ptr,
+ "Out of memory while processing unknown chunk.");
+ return;
+ }
- 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_memcpy(np, info_ptr->unknown_chunks,
+ info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk));
+ png_free(png_ptr, info_ptr->unknown_chunks);
+ info_ptr->unknown_chunks=NULL;
- png_memcpy((png_charp)to->name,
- (png_charp)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);
+ for (i = 0; i < num_unknowns; i++)
+ {
+ png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
+ png_unknown_chunkp from = unknowns + i;
- if (from->size == 0)
- to->data=NULL;
- else
- {
- to->data = (png_bytep)png_malloc_warn(png_ptr,
- (png_uint_32)from->size);
- if (to->data == NULL)
- {
- png_warning(png_ptr,
- "Out of memory while processing unknown chunk.");
- to->size = 0;
- }
- else
- png_memcpy(to->data, from->data, from->size);
- }
- }
+ png_memcpy((png_charp)to->name,
+ (png_charp)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);
- info_ptr->unknown_chunks = np;
- info_ptr->unknown_chunks_num += num_unknowns;
+ if (from->size == 0)
+ to->data=NULL;
+ else
+ {
+ to->data = (png_bytep)png_malloc_warn(png_ptr,
+ (png_uint_32)from->size);
+ if (to->data == NULL)
+ {
+ png_warning(png_ptr,
+ "Out of memory while processing unknown chunk.");
+ to->size = 0;
+ }
+ else
+ png_memcpy(to->data, from->data, from->size);
+ }
+ }
+
+ info_ptr->unknown_chunks = np;
+ info_ptr->unknown_chunks_num += num_unknowns;
#ifdef PNG_FREE_ME_SUPPORTED
- info_ptr->free_me |= PNG_FREE_UNKN;
+ info_ptr->free_me |= PNG_FREE_UNKN;
#endif
}
void PNGAPI
@@ -1111,44 +1112,44 @@
png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_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)
- {
+ 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;
+ png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
else
- png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
+ png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
if (keep == PNG_HANDLE_CHUNK_ALWAYS)
- png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS;
+ png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS;
else
- png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS;
+ png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS;
return;
- }
- if (chunk_list == NULL)
+ }
+ if (chunk_list == NULL)
return;
- old_num_chunks = png_ptr->num_chunk_list;
- new_list=(png_bytep)png_malloc(png_ptr,
- (png_uint_32)
- (5*(num_chunks + old_num_chunks)));
- if (png_ptr->chunk_list != NULL)
- {
- png_memcpy(new_list, png_ptr->chunk_list,
- (png_size_t)(5*old_num_chunks));
- 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;
+ old_num_chunks = png_ptr->num_chunk_list;
+ new_list=(png_bytep)png_malloc(png_ptr,
+ (png_uint_32)
+ (5*(num_chunks + old_num_chunks)));
+ if (png_ptr->chunk_list != NULL)
+ {
+ png_memcpy(new_list, png_ptr->chunk_list,
+ (png_size_t)(5*old_num_chunks));
+ 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;
#ifdef PNG_FREE_ME_SUPPORTED
- png_ptr->free_me |= PNG_FREE_LIST;
+ png_ptr->free_me |= PNG_FREE_LIST;
#endif
}
#endif
@@ -1208,7 +1209,7 @@
#ifndef PNG_1_0_X
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
-/* function was added to libpng 1.2.0 and should always exist by default */
+/* Function was added to libpng 1.2.0 and should always exist by default */
void PNGAPI
png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags)
{
@@ -1218,7 +1219,7 @@
asm_flags = asm_flags; /* Quiet the compiler */
}
-/* this function was added to libpng 1.2.0 */
+/* This function was added to libpng 1.2.0 */
void PNGAPI
png_set_mmx_thresholds (png_structp png_ptr,
png_byte mmx_bitdepth_threshold,
@@ -1234,18 +1235,19 @@
#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
-/* this function was added to libpng 1.2.6 */
+/* 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_uint_32 user_height_max)
{
- /* Images with dimensions larger than these limits will be
- * rejected by png_set_IHDR(). To accept any PNG datastream
- * regardless of dimensions, set both limits to 0x7ffffffL.
- */
- if (png_ptr == NULL) return;
- png_ptr->user_width_max = user_width_max;
- png_ptr->user_height_max = user_height_max;
+ /* Images with dimensions larger than these limits will be
+ * rejected by png_set_IHDR(). To accept any PNG datastream
+ * regardless of dimensions, set both limits to 0x7ffffffL.
+ */
+ if (png_ptr == NULL)
+ return;
+ png_ptr->user_width_max = user_width_max;
+ png_ptr->user_height_max = user_height_max;
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
diff --git a/pngtest.c b/pngtest.c
index f3ce918..84ae2b6 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng
*
- * Last changed in libpng 1.2.36 [May 7, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -65,7 +65,7 @@
#endif
#if !PNG_DEBUG
-# define SINGLE_ROWBUF_ALLOC /* makes buffer overruns easier to nail */
+# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
#endif
/* Turn on CPU timing
@@ -95,9 +95,9 @@
#include <mem.h>
#endif
-/* defined so I can write to a file on gui/windowing platforms */
+/* Defined so I can write to a file on gui/windowing platforms */
/* #define STDERR stderr */
-#define STDERR stdout /* for DOS */
+#define STDERR stdout /* For DOS */
/* In case a system header (e.g., on AIX) defined jmpbuf */
#ifdef jmpbuf
@@ -109,7 +109,7 @@
# define png_jmpbuf(png_ptr) png_ptr->jmpbuf
#endif
-/* example of using row callbacks to make a simple progress meter */
+/* Example of using row callbacks to make a simple progress meter */
static int status_pass = 1;
static int status_dots_requested = 0;
static int status_dots = 1;
@@ -125,20 +125,21 @@
#endif
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");
+ 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
@@ -152,15 +153,17 @@
#endif
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");
+ if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
+ return;
+ fprintf(stdout, "w");
}
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
/* Example of using user transform callback (we don't transform anything,
- but merely examine the row filters. We set this to 256 rather than
- 5 in case illegal filter values are present.) */
+ * but merely examine the row filters. We set this to 256 rather than
+ * 5 in case illegal filter values are present.)
+ */
static png_uint_32 filters_used[256];
void
#ifdef PNG_1_0_X
@@ -173,14 +176,15 @@
#endif
count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
{
- if (png_ptr != NULL && row_info != NULL)
+ if (png_ptr != NULL && row_info != NULL)
++filters_used[*(data - 1)];
}
#endif
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-/* example of using user transform callback (we don't transform anything,
- but merely count the zero samples) */
+/* Example of using user transform callback (we don't transform anything,
+ * but merely count the zero samples)
+ */
static png_uint_32 zero_samples;
@@ -198,7 +202,7 @@
png_bytep dp = data;
if (png_ptr == NULL)return;
- /* contents of row_info:
+ /* Contents of 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
@@ -207,8 +211,7 @@
* png_byte pixel_depth bits per pixel (depth*channels)
*/
-
- /* counts the number of zero samples (or zero pixels if color_type is 3 */
+ /* Counts the number of zero samples (or zero pixels if color_type is 3 */
if (row_info->color_type == 0 || row_info->color_type == 3)
{
@@ -218,7 +221,8 @@
{
if (row_info->bit_depth == 1)
{
- if (((*dp << pos++ ) & 0x80) == 0) zero_samples++;
+ if (((*dp << pos++ ) & 0x80) == 0)
+ zero_samples++;
if (pos == 8)
{
pos = 0;
@@ -227,7 +231,8 @@
}
if (row_info->bit_depth == 2)
{
- if (((*dp << (pos+=2)) & 0xc0) == 0) zero_samples++;
+ if (((*dp << (pos+=2)) & 0xc0) == 0)
+ zero_samples++;
if (pos == 8)
{
pos = 0;
@@ -236,7 +241,8 @@
}
if (row_info->bit_depth == 4)
{
- if (((*dp << (pos+=4)) & 0xf0) == 0) zero_samples++;
+ if (((*dp << (pos+=4)) & 0xf0) == 0)
+ zero_samples++;
if (pos == 8)
{
pos = 0;
@@ -244,15 +250,17 @@
}
}
if (row_info->bit_depth == 8)
- if (*dp++ == 0) zero_samples++;
+ if (*dp++ == 0)
+ zero_samples++;
if (row_info->bit_depth == 16)
{
- if ((*dp | *(dp+1)) == 0) zero_samples++;
+ if ((*dp | *(dp+1)) == 0)
+ zero_samples++;
dp+=2;
}
}
}
- else /* other color types */
+ else /* Other color types */
{
png_uint_32 n, nstop;
int channel;
@@ -264,17 +272,20 @@
for (channel = 0; channel < color_channels; channel++)
{
if (row_info->bit_depth == 8)
- if (*dp++ == 0) zero_samples++;
+ if (*dp++ == 0)
+ zero_samples++;
if (row_info->bit_depth == 16)
{
- if ((*dp | *(dp+1)) == 0) zero_samples++;
+ if ((*dp | *(dp+1)) == 0)
+ zero_samples++;
dp+=2;
}
}
if (row_info->color_type > 3)
{
dp++;
- if (row_info->bit_depth == 16)dp++;
+ if (row_info->bit_depth == 16)
+ dp++;
}
}
}
@@ -285,12 +296,13 @@
#if defined(PNG_NO_STDIO)
/* START of code to validate stdio-free compilation */
-/* These copies of the default read/write functions come from pngrio.c and */
-/* pngwio.c. They allow "don't include stdio" testing of the library. */
-/* This is the function that does the actual reading of data. If you are
- not reading from a standard C stream, you should create a replacement
- read_data function and use it at run time with png_set_read_fn(), rather
- than changing the library. */
+/* These copies of the default read/write functions come from pngrio.c and
+ * pngwio.c. They allow "don't include stdio" testing of the library.
+ * This is the function that does the actual reading of data. If you are
+ * not reading from a standard C stream, you should create a replacement
+ * read_data function and use it at run time with png_set_read_fn(), rather
+ * than changing the library.
+ */
#ifndef USE_FAR_KEYWORD
static void
@@ -309,7 +321,7 @@
}
}
#else
-/* this is the model-independent version. Since the standard I/O library
+/* 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.
*/
@@ -341,7 +353,7 @@
{
read = MIN(NEAR_BUF_SIZE, remaining);
READFILE(io_ptr, buf, 1, err);
- png_memcpy(data, buf, read); /* copy far buffer to near buffer */
+ png_memcpy(data, buf, read); /* Copy far buffer to near buffer */
if (err != read)
break;
else
@@ -352,9 +364,7 @@
while (remaining != 0);
}
if (check != length)
- {
png_error(png_ptr, "read Error");
- }
}
#endif /* USE_FAR_KEYWORD */
@@ -363,14 +373,15 @@
pngtest_flush(png_structp png_ptr)
{
/* Do nothing; fflush() is said to be just a waste of energy. */
- png_ptr = png_ptr; /* stifle compiler warning */
+ png_ptr = png_ptr; /* Stifle compiler warning */
}
#endif
/* This is the function that does the actual writing of data. If you are
- not writing to a standard C stream, you should create a replacement
- write_data function and use it at run time with png_set_write_fn(), rather
- than changing the library. */
+ * not writing to a standard C stream, you should create a replacement
+ * write_data function and use it at run time with png_set_write_fn(), rather
+ * than changing the library.
+ */
#ifndef USE_FAR_KEYWORD
static void
pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
@@ -384,7 +395,7 @@
}
}
#else
-/* this is the model-independent version. Since the standard I/O library
+/* 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.
*/
@@ -415,7 +426,7 @@
do
{
written = MIN(NEAR_BUF_SIZE, remaining);
- png_memcpy(buf, data, written); /* copy far buffer to near buffer */
+ png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
WRITEFILE(io_ptr, buf, written, err);
if (err != written)
break;
@@ -457,7 +468,8 @@
{
pngtest_warning(png_ptr, message);
/* We can return because png_error calls the default handler, which is
- * actually OK in this case. */
+ * actually OK in this case.
+ */
}
#endif /* PNG_NO_STDIO */
/* END of code to validate stdio-free compilation */
@@ -466,13 +478,14 @@
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
/* Allocate memory. For reasonable files, size should never exceed
- 64K. However, zlib may allocate more then 64K if you don't tell
- it not to. See zconf.h and png.h for more information. zlib does
- need to allocate exactly 64K, so whatever you call here must
- have the ability to do that.
-
- This piece of code can be compiled to validate max 64K allocations
- by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K. */
+ * 64K. However, zlib may allocate more then 64K if you don't tell
+ * it not to. See zconf.h and png.h for more information. zlib does
+ * need to allocate exactly 64K, so whatever you call here must
+ * have the ability to do that.
+ *
+ * This piece of code can be compiled to validate max 64K allocations
+ * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
+ */
typedef struct memory_information
{
png_uint_32 size;
@@ -495,7 +508,8 @@
{
/* png_malloc has already tested for NULL; png_create_struct calls
- png_debug_malloc directly, with png_ptr == NULL which is OK */
+ * png_debug_malloc directly, with png_ptr == NULL which is OK
+ */
if (size == 0)
return (NULL);
@@ -592,7 +606,7 @@
/* Demonstration of user chunk support of the sTER and vpAg chunks */
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
-/* (sTER is a public chunk not yet understood by libpng. vpAg is a private
+/* (sTER is a public chunk not yet known by libpng. vpAg is a private
chunk used in ImageMagick to store "virtual page" size). */
static png_uint_32 user_chunk_data[4];
@@ -606,50 +620,51 @@
static int read_user_chunk_callback(png_struct *png_ptr,
png_unknown_chunkp chunk)
{
- png_uint_32
- *my_user_chunk_data;
+ png_uint_32
+ *my_user_chunk_data;
- /* Return one of the following: */
- /* return (-n); chunk had an error */
- /* return (0); did not recognize */
- /* return (n); success */
+ /* Return one of the following:
+ * return (-n); chunk had an error
+ * return (0); did not recognize
+ * return (n); success
+ *
+ * The unknown chunk structure contains the chunk data:
+ * png_byte name[5];
+ * png_byte *data;
+ * png_size_t size;
+ *
+ * Note that libpng has already taken care of the CRC handling.
+ */
- /* The unknown chunk structure contains the chunk data:
- * png_byte name[5];
- * png_byte *data;
- * png_size_t size;
- *
- * Note that libpng has already taken care of the CRC handling.
- */
+ if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
+ chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
+ {
+ /* 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);
+ }
- if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
- chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
- {
- /* 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);
- }
- if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
- chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
- return (0); /* Did not recognize */
+ if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
+ chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
+ return (0); /* Did not recognize */
- /* Found ImageMagick vpAg chunk */
+ /* Found ImageMagick vpAg chunk */
- if (chunk->size != 9)
- return (-1); /* Error return */
+ if (chunk->size != 9)
+ return (-1); /* Error return */
- my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
+ my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
- my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data);
- my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4);
- my_user_chunk_data[3]=(png_uint_32)chunk->data[8];
+ my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data);
+ my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4);
+ my_user_chunk_data[3]=(png_uint_32)chunk->data[8];
- return (1);
+ return (1);
}
#endif
@@ -730,12 +745,12 @@
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
- user_chunk_data[0] = 0;
- user_chunk_data[1] = 0;
- user_chunk_data[2] = 0;
- user_chunk_data[3] = 0;
- png_set_read_user_chunk_fn(read_ptr, user_chunk_data,
- read_user_chunk_callback);
+ user_chunk_data[0] = 0;
+ user_chunk_data[1] = 0;
+ user_chunk_data[2] = 0;
+ user_chunk_data[3] = 0;
+ png_set_read_user_chunk_fn(read_ptr, user_chunk_data,
+ read_user_chunk_callback);
#endif
#ifdef PNG_WRITE_SUPPORTED
@@ -844,10 +859,10 @@
#if defined(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);
+ int i;
+ for (i = 0; i<256; i++)
+ filters_used[i] = 0;
+ png_set_read_user_transform_fn(read_ptr, count_filters);
}
#endif
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
@@ -906,9 +921,7 @@
png_fixed_point gamma;
if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
- {
png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
- }
}
#endif
#else /* Use floating point versions */
@@ -930,13 +943,11 @@
double gamma;
if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
- {
png_set_gAMA(write_ptr, write_info_ptr, gamma);
- }
}
#endif
-#endif /* floating point */
-#endif /* fixed point */
+#endif /* Floating point */
+#endif /* Fixed point */
#if defined(PNG_iCCP_SUPPORTED)
{
png_charp name;
@@ -957,9 +968,7 @@
int intent;
if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
- {
png_set_sRGB(write_ptr, write_info_ptr, intent);
- }
}
#endif
{
@@ -967,9 +976,7 @@
int num_palette;
if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
- {
png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
- }
}
#if defined(PNG_bKGD_SUPPORTED)
{
@@ -986,9 +993,7 @@
png_uint_16p hist;
if (png_get_hIST(read_ptr, read_info_ptr, &hist))
- {
png_set_hIST(write_ptr, write_info_ptr, hist);
- }
}
#endif
#if defined(PNG_oFFs_SUPPORTED)
@@ -997,7 +1002,7 @@
int unit_type;
if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
- &unit_type))
+ &unit_type))
{
png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
}
@@ -1024,9 +1029,7 @@
int unit_type;
if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
- {
png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
- }
}
#endif
#if defined(PNG_sBIT_SUPPORTED)
@@ -1034,9 +1037,7 @@
png_color_8p sig_bit;
if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
- {
png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
- }
}
#endif
#if defined(PNG_sCAL_SUPPORTED)
@@ -1086,9 +1087,10 @@
{
png_set_tIME(write_ptr, write_info_ptr, mod_time);
#if defined(PNG_TIME_RFC1123_SUPPORTED)
- /* we have to use png_memcpy instead of "=" because the string
- pointed to by png_convert_to_rfc1123() gets free'ed before
- we use it */
+ /* We have to use png_memcpy instead of "=" because the string
+ * pointed to by png_convert_to_rfc1123() gets free'ed before
+ * we use it.
+ */
png_memcpy(tIME_string,
png_convert_to_rfc1123(read_ptr, mod_time),
png_sizeof(tIME_string));
@@ -1110,13 +1112,13 @@
int sample_max = (1 << read_info_ptr->bit_depth);
/* libpng doesn't reject a tRNS chunk with out-of-range samples */
if (!((read_info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
- (int)trans_values->gray > sample_max) ||
- (read_info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
- ((int)trans_values->red > sample_max ||
- (int)trans_values->green > sample_max ||
- (int)trans_values->blue > sample_max))))
- png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
- trans_values);
+ (int)trans_values->gray > sample_max) ||
+ (read_info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
+ ((int)trans_values->red > sample_max ||
+ (int)trans_values->green > sample_max ||
+ (int)trans_values->blue > sample_max))))
+ png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
+ trans_values);
}
}
#endif
@@ -1130,9 +1132,10 @@
png_size_t 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 */
+ /* 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++)
png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
unknowns[i].location);
@@ -1144,40 +1147,40 @@
png_debug(0, "Writing info struct");
/* If we wanted, we could write info in two steps:
- png_write_info_before_PLTE(write_ptr, write_info_ptr);
+ * png_write_info_before_PLTE(write_ptr, write_info_ptr);
*/
png_write_info(write_ptr, write_info_ptr);
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
if (user_chunk_data[0] != 0)
{
- png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
+ png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
- unsigned char
- ster_chunk_data[1];
+ unsigned char
+ ster_chunk_data[1];
- 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 (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'};
+ png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
- unsigned char
- vpag_chunk_data[9];
+ unsigned char
+ vpag_chunk_data[9];
- if (verbose)
- fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n",
- (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);
- png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
+ if (verbose)
+ fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n",
+ (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);
+ png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
}
#endif
@@ -1272,7 +1275,7 @@
{
png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
#if defined(PNG_TIME_RFC1123_SUPPORTED)
- /* we have to use png_memcpy instead of "=" because the string
+ /* We have to use png_memcpy instead of "=" because the string
pointed to by png_convert_to_rfc1123() gets free'ed before
we use it */
png_memcpy(tIME_string,
@@ -1295,9 +1298,10 @@
png_size_t 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 */
+ /* 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++)
png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
unknowns[i].location);
@@ -1420,7 +1424,7 @@
return (0);
}
-/* input and output filenames */
+/* Input and output filenames */
#ifdef RISCOS
static PNG_CONST char *inname = "pngtest/png";
static PNG_CONST char *outname = "pngout/png";
@@ -1449,9 +1453,10 @@
(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
- tests should be impossible because of the way the macros are set
- in pngconf.h */
+ * not sure this matters, but it is nice to know, the first of these
+ * tests should be impossible because of the way the macros are set
+ * in pngconf.h
+ */
#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
#endif
@@ -1681,4 +1686,4 @@
}
/* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_44 your_png_h_is_not_version_1_0_44;
+typedef version_1_0_45 your_png_h_is_not_version_1_0_45;
diff --git a/pngtrans.c b/pngtrans.c
index f92f4b0..f221f54 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,9 +1,9 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
- * Last changed in libpng 1.2.30 [August 15, 2008]
+ * Last changed in libpng 1.2.36 [May 14, 2009]
* For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2009 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.)
*/
@@ -13,35 +13,38 @@
#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 */
+/* Turn on BGR-to-RGB mapping */
void PNGAPI
png_set_bgr(png_structp png_ptr)
{
png_debug(1, "in png_set_bgr");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= PNG_BGR;
}
#endif
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-/* turn on 16 bit byte swapping */
+/* Turn on 16 bit byte swapping */
void PNGAPI
png_set_swap(png_structp png_ptr)
{
png_debug(1, "in png_set_swap");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
if (png_ptr->bit_depth == 16)
png_ptr->transformations |= PNG_SWAP_BYTES;
}
#endif
#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
-/* turn on pixel packing */
+/* Turn on pixel packing */
void PNGAPI
png_set_packing(png_structp png_ptr)
{
png_debug(1, "in png_set_packing");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
if (png_ptr->bit_depth < 8)
{
png_ptr->transformations |= PNG_PACK;
@@ -51,12 +54,13 @@
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-/* turn on packed pixel swapping */
+/* Turn on packed pixel swapping */
void PNGAPI
png_set_packswap(png_structp png_ptr)
{
png_debug(1, "in png_set_packswap");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
if (png_ptr->bit_depth < 8)
png_ptr->transformations |= PNG_PACKSWAP;
}
@@ -67,7 +71,8 @@
png_set_shift(png_structp png_ptr, png_color_8p true_bits)
{
png_debug(1, "in png_set_shift");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= PNG_SHIFT;
png_ptr->shift = *true_bits;
}
@@ -99,7 +104,8 @@
png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
{
png_debug(1, "in png_set_filler");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= PNG_FILLER;
png_ptr->filler = (png_byte)filler;
if (filler_loc == PNG_FILLER_AFTER)
@@ -132,7 +138,8 @@
png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
{
png_debug(1, "in png_set_add_alpha");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_set_filler(png_ptr, filler, filler_loc);
png_ptr->transformations |= PNG_ADD_ALPHA;
}
@@ -146,7 +153,8 @@
png_set_swap_alpha(png_structp png_ptr)
{
png_debug(1, "in png_set_swap_alpha");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= PNG_SWAP_ALPHA;
}
#endif
@@ -157,7 +165,8 @@
png_set_invert_alpha(png_structp png_ptr)
{
png_debug(1, "in png_set_invert_alpha");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= PNG_INVERT_ALPHA;
}
#endif
@@ -167,11 +176,12 @@
png_set_invert_mono(png_structp png_ptr)
{
png_debug(1, "in png_set_invert_mono");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
png_ptr->transformations |= PNG_INVERT_MONO;
}
-/* invert monochrome grayscale data */
+/* Invert monochrome grayscale data */
void /* PRIVATE */
png_do_invert(png_row_infop row_info, png_bytep row)
{
@@ -226,7 +236,7 @@
#endif
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-/* swaps byte order on 16 bit depth images */
+/* Swaps byte order on 16 bit depth images */
void /* PRIVATE */
png_do_swap(png_row_infop row_info, png_bytep row)
{
@@ -357,7 +367,7 @@
0x8F, 0x9F, 0xAF, 0xBF, 0xCF, 0xDF, 0xEF, 0xFF
};
-/* swaps pixel packing order within bytes */
+/* Swaps pixel packing order within bytes */
void /* PRIVATE */
png_do_packswap(png_row_infop row_info, png_bytep row)
{
@@ -389,7 +399,7 @@
#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
-/* remove filler or alpha byte(s) */
+/* Remove filler or alpha byte(s) */
void /* PRIVATE */
png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
{
@@ -404,9 +414,9 @@
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)
+ (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
+ (flags & PNG_FLAG_STRIP_ALPHA))) &&
+ row_info->channels == 4)
{
if (row_info->bit_depth == 8)
{
@@ -547,7 +557,7 @@
#endif
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-/* swaps red and blue bytes within a pixel */
+/* Swaps red and blue bytes within a pixel */
void /* PRIVATE */
png_do_bgr(png_row_infop row_info, png_bytep row)
{
@@ -631,7 +641,8 @@
user_transform_ptr, int user_transform_depth, int user_transform_channels)
{
png_debug(1, "in png_set_user_transform_info");
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
png_ptr->user_transform_ptr = user_transform_ptr;
png_ptr->user_transform_depth = (png_byte)user_transform_depth;
@@ -652,7 +663,8 @@
png_voidp PNGAPI
png_get_user_transform_ptr(png_structp png_ptr)
{
- if (png_ptr == NULL) return (NULL);
+ if (png_ptr == NULL)
+ return (NULL);
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
return ((png_voidp)png_ptr->user_transform_ptr);
#else
diff --git a/pngwio.c b/pngwio.c
index ab4dba2..740b71d 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@
/* pngwio.c - functions for data output
*
- * Last changed in libpng 1.2.36 [May 7, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -20,10 +20,11 @@
#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
- buffering if you are using unbuffered writes. This should never be asked
- to write more than 64K on a 16 bit machine. */
+ * writes to a file pointer. Note that this routine sometimes gets called
+ * with very small lengths, so you should implement some kind of simple
+ * buffering if you are using unbuffered writes. This should never be asked
+ * to write more than 64K on a 16 bit machine.
+ */
void /* PRIVATE */
png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
@@ -36,16 +37,18 @@
#if !defined(PNG_NO_STDIO)
/* This is the function that does the actual writing of data. If you are
- not writing to a standard C stream, you should create a replacement
- write_data function and use it at run time with png_set_write_fn(), rather
- than changing the library. */
+ * not writing to a standard C stream, you should create a replacement
+ * write_data function and use it at run time with png_set_write_fn(), rather
+ * than changing the library.
+ */
#ifndef USE_FAR_KEYWORD
void PNGAPI
png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_uint_32 check;
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
#if defined(_WIN32_WCE)
if ( !WriteFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
check = 0;
@@ -56,10 +59,10 @@
png_error(png_ptr, "Write Error");
}
#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.
-*/
+/* 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.
+ */
#define NEAR_BUF_SIZE 1024
#define MIN(a,b) (a <= b ? a : b)
@@ -71,7 +74,8 @@
png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
png_FILE_p io_ptr;
- if (png_ptr == NULL) return;
+ 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);
@@ -93,7 +97,7 @@
do
{
written = MIN(NEAR_BUF_SIZE, remaining);
- png_memcpy(buf, data, written); /* copy far buffer to near buffer */
+ png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
#if defined(_WIN32_WCE)
if ( !WriteFile(io_ptr, buf, written, &err, NULL) )
err = 0;
@@ -102,8 +106,10 @@
#endif
if (err != written)
break;
+
else
check += err;
+
data += written;
remaining -= written;
}
@@ -117,8 +123,9 @@
#endif
/* This function is called to output any data pending writing (normally
- to disk). After png_flush is called, there should be no data pending
- writing in any buffers. */
+ * to disk). After png_flush is called, there should be no data pending
+ * writing in any buffers.
+ */
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
void /* PRIVATE */
png_flush(png_structp png_ptr)
@@ -134,7 +141,8 @@
#if !defined(_WIN32_WCE)
png_FILE_p io_ptr;
#endif
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
#if !defined(_WIN32_WCE)
io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr));
fflush(io_ptr);
@@ -144,43 +152,47 @@
#endif
/* This function allows the application to supply new output functions for
- libpng if standard C streams aren't being used.
-
- This function takes as its arguments:
- png_ptr - pointer to a png output data structure
- io_ptr - pointer to user supplied structure containing info about
- the output functions. May be NULL.
- write_data_fn - pointer to a new output function that takes as its
- arguments a pointer to a png_struct, a pointer to
- data to be written, and a 32-bit unsigned int that is
- the number of bytes to be written. The new write
- function should call png_error(png_ptr, "Error msg")
- to exit and output any fatal error messages. May be
- NULL, in which case libpng's default function will
- be used.
- flush_data_fn - pointer to a new flush function that takes as its
- arguments a pointer to a png_struct. After a call to
- the flush function, there should be no data in any buffers
- or pending transmission. If the output method doesn't do
- any buffering of ouput, a function prototype must still be
- supplied although it doesn't have to do anything. If
- PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
- time, output_flush_fn will be ignored, although it must be
- supplied for compatibility. May be NULL, in which case
- libpng's default function will be used, if
- PNG_WRITE_FLUSH_SUPPORTED is defined. This is not
- a good idea if io_ptr does not point to a standard
- *FILE structure. */
+ * libpng if standard C streams aren't being used.
+ *
+ * This function takes as its arguments:
+ * png_ptr - pointer to a png output data structure
+ * io_ptr - pointer to user supplied structure containing info about
+ * the output functions. May be NULL.
+ * write_data_fn - pointer to a new output function that takes as its
+ * arguments a pointer to a png_struct, a pointer to
+ * data to be written, and a 32-bit unsigned int that is
+ * the number of bytes to be written. The new write
+ * function should call png_error(png_ptr, "Error msg")
+ * to exit and output any fatal error messages. May be
+ * NULL, in which case libpng's default function will
+ * be used.
+ * flush_data_fn - pointer to a new flush function that takes as its
+ * arguments a pointer to a png_struct. After a call to
+ * the flush function, there should be no data in any buffers
+ * or pending transmission. If the output method doesn't do
+ * any buffering of ouput, a function prototype must still be
+ * supplied although it doesn't have to do anything. If
+ * PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
+ * time, output_flush_fn will be ignored, although it must be
+ * supplied for compatibility. May be NULL, in which case
+ * libpng's default function will be used, if
+ * PNG_WRITE_FLUSH_SUPPORTED is defined. This is not
+ * a good idea if io_ptr does not point to a standard
+ * *FILE structure.
+ */
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)
{
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
+
png_ptr->io_ptr = io_ptr;
#if !defined(PNG_NO_STDIO)
if (write_data_fn != NULL)
png_ptr->write_data_fn = write_data_fn;
+
else
png_ptr->write_data_fn = png_default_write_data;
#else
@@ -191,6 +203,7 @@
#if !defined(PNG_NO_STDIO)
if (output_flush_fn != NULL)
png_ptr->output_flush_fn = output_flush_fn;
+
else
png_ptr->output_flush_fn = png_default_flush;
#else
@@ -217,9 +230,11 @@
void FAR *far_ptr;
FP_OFF(near_ptr) = FP_OFF(ptr);
far_ptr = (void FAR *)near_ptr;
+
if (check != 0)
if (FP_SEG(ptr) != FP_SEG(far_ptr))
png_error(png_ptr, "segment lost in conversion");
+
return(near_ptr);
}
# else
@@ -229,9 +244,11 @@
void FAR *far_ptr;
near_ptr = (void FAR *)ptr;
far_ptr = (void FAR *)near_ptr;
+
if (check != 0)
if (far_ptr != ptr)
png_error(png_ptr, "segment lost in conversion");
+
return(near_ptr);
}
# endif
diff --git a/pngwrite.c b/pngwrite.c
index 8d95788..bd6263c 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,14 +1,14 @@
/* pngwrite.c - general routines to write a PNG file
*
- * Last changed in libpng 1.2.34 [December 18, 2008]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2009 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.)
*/
-/* get internal access to png.h */
+/* Get internal access to png.h */
#define PNG_INTERNAL
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
@@ -30,7 +30,7 @@
return;
if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
{
- png_write_sig(png_ptr); /* write PNG signature */
+ png_write_sig(png_ptr); /* Write PNG signature */
#if defined(PNG_MNG_FEATURES_SUPPORTED)
if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&(png_ptr->mng_features_permitted))
{
@@ -38,7 +38,7 @@
png_ptr->mng_features_permitted=0;
}
#endif
- /* write IHDR information. */
+ /* 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,
@@ -47,8 +47,9 @@
#else
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. */
+ /* The rest of these check to see if the valid field has the appropriate
+ * flag set, and if it does, writes the chunk.
+ */
#if defined(PNG_WRITE_gAMA_SUPPORTED)
if (info_ptr->valid & PNG_INFO_gAMA)
{
@@ -97,14 +98,14 @@
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
if (info_ptr->unknown_chunks_num)
{
- png_unknown_chunk *up;
+ png_unknown_chunk *up;
- png_debug(5, "writing extra chunks");
+ png_debug(5, "writing extra chunks");
- for (up = info_ptr->unknown_chunks;
- up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
- up++)
- {
+ for (up = info_ptr->unknown_chunks;
+ up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
+ up++)
+ {
int keep=png_handle_as_unknown(png_ptr, up->name);
if (keep != PNG_HANDLE_CHUNK_NEVER &&
up->location && !(up->location & PNG_HAVE_PLTE) &&
@@ -116,7 +117,7 @@
png_warning(png_ptr, "Writing zero-length unknown chunk");
png_write_chunk(png_ptr, up->name, up->data, up->size);
}
- }
+ }
}
#endif
png_ptr->mode |= PNG_WROTE_INFO_BEFORE_PLTE;
@@ -145,20 +146,20 @@
#if defined(PNG_WRITE_tRNS_SUPPORTED)
if (info_ptr->valid & PNG_INFO_tRNS)
- {
+ {
#if defined(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)
- {
- int j;
- for (j=0; j<(int)info_ptr->num_trans; j++)
- info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]);
- }
+ /* Invert the alpha channel (in tRNS) */
+ if ((png_ptr->transformations & PNG_INVERT_ALPHA) &&
+ info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ int j;
+ for (j=0; j<(int)info_ptr->num_trans; j++)
+ info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]);
+ }
#endif
png_write_tRNS(png_ptr, info_ptr->trans, &(info_ptr->trans_values),
info_ptr->num_trans, info_ptr->color_type);
- }
+ }
#endif
#if defined(PNG_WRITE_bKGD_SUPPORTED)
if (info_ptr->valid & PNG_INFO_bKGD)
@@ -179,49 +180,56 @@
info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams,
info_ptr->pcal_units, info_ptr->pcal_params);
#endif
-#if defined(PNG_WRITE_sCAL_SUPPORTED)
+
+#if defined(PNG_sCAL_SUPPORTED)
if (info_ptr->valid & PNG_INFO_sCAL)
+#if defined(PNG_WRITE_sCAL_SUPPORTED)
#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO)
png_write_sCAL(png_ptr, (int)info_ptr->scal_unit,
info_ptr->scal_pixel_width, info_ptr->scal_pixel_height);
-#else
+#else /* !FLOATING_POINT */
#ifdef PNG_FIXED_POINT_SUPPORTED
png_write_sCAL_s(png_ptr, (int)info_ptr->scal_unit,
info_ptr->scal_s_width, info_ptr->scal_s_height);
-#else
+#endif /* FIXED_POINT */
+#endif /* FLOATING_POINT */
+#else /* !WRITE_sCAL */
png_warning(png_ptr,
"png_write_sCAL not supported; sCAL chunk not written.");
-#endif
-#endif
-#endif
+#endif /* WRITE_sCAL */
+#endif /* sCAL */
+
#if defined(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);
-#endif
+#endif /* pHYs */
+
#if defined(PNG_WRITE_tIME_SUPPORTED)
if (info_ptr->valid & PNG_INFO_tIME)
{
png_write_tIME(png_ptr, &(info_ptr->mod_time));
png_ptr->mode |= PNG_WROTE_tIME;
}
-#endif
+#endif /* tIME */
+
#if defined(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);
-#endif
+#endif /* sPLT */
+
#if defined(PNG_WRITE_TEXT_SUPPORTED)
/* Check to see if we need to write text chunks */
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);
- /* an internationalized chunk? */
+ /* An internationalized chunk? */
if (info_ptr->text[i].compression > 0)
{
#if defined(PNG_WRITE_iTXt_SUPPORTED)
- /* write international chunk */
+ /* Write international chunk */
png_write_iTXt(png_ptr,
info_ptr->text[i].compression,
info_ptr->text[i].key,
@@ -238,7 +246,7 @@
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt)
{
#if defined(PNG_WRITE_zTXt_SUPPORTED)
- /* write compressed chunk */
+ /* Write compressed chunk */
png_write_zTXt(png_ptr, info_ptr->text[i].key,
info_ptr->text[i].text, 0,
info_ptr->text[i].compression);
@@ -251,18 +259,20 @@
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
{
#if defined(PNG_WRITE_tEXt_SUPPORTED)
- /* write uncompressed chunk */
+ /* Write uncompressed chunk */
png_write_tEXt(png_ptr, info_ptr->text[i].key,
info_ptr->text[i].text,
0);
-#else
- png_warning(png_ptr, "Unable to write uncompressed text");
-#endif
/* Mark this chunk as written */
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
+#else
+ /* Can't get here */
+ png_warning(png_ptr, "Unable to write uncompressed text");
+#endif
}
}
-#endif
+#endif /* tEXt */
+
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
if (info_ptr->unknown_chunks_num)
{
@@ -302,29 +312,29 @@
if (!(png_ptr->mode & PNG_HAVE_IDAT))
png_error(png_ptr, "No IDATs written into file");
- /* see if user wants us to write information chunks */
+ /* See if user wants us to write information chunks */
if (info_ptr != NULL)
{
#if defined(PNG_WRITE_TEXT_SUPPORTED)
- int i; /* local index variable */
+ int i; /* Local index variable */
#endif
#if defined(PNG_WRITE_tIME_SUPPORTED)
- /* check to see if user has supplied a time chunk */
+ /* Check to see if user has supplied a time chunk */
if ((info_ptr->valid & PNG_INFO_tIME) &&
!(png_ptr->mode & PNG_WROTE_tIME))
png_write_tIME(png_ptr, &(info_ptr->mod_time));
#endif
#if defined(PNG_WRITE_TEXT_SUPPORTED)
- /* loop through comment chunks */
+ /* Loop through comment chunks */
for (i = 0; i < info_ptr->num_text; i++)
{
png_debug2(2, "Writing trailer text chunk %d, type %d", i,
info_ptr->text[i].compression);
- /* an internationalized chunk? */
+ /* An internationalized chunk? */
if (info_ptr->text[i].compression > 0)
{
#if defined(PNG_WRITE_iTXt_SUPPORTED)
- /* write international chunk */
+ /* Write international chunk */
png_write_iTXt(png_ptr,
info_ptr->text[i].compression,
info_ptr->text[i].key,
@@ -340,7 +350,7 @@
else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt)
{
#if defined(PNG_WRITE_zTXt_SUPPORTED)
- /* write compressed chunk */
+ /* Write compressed chunk */
png_write_zTXt(png_ptr, info_ptr->text[i].key,
info_ptr->text[i].text, 0,
info_ptr->text[i].compression);
@@ -353,7 +363,7 @@
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
{
#if defined(PNG_WRITE_tEXt_SUPPORTED)
- /* write uncompressed chunk */
+ /* Write uncompressed chunk */
png_write_tEXt(png_ptr, info_ptr->text[i].key,
info_ptr->text[i].text, 0);
#else
@@ -391,7 +401,7 @@
png_ptr->mode |= PNG_AFTER_IDAT;
- /* write end of PNG file */
+ /* Write end of PNG file */
png_write_IEND(png_ptr);
/* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03,
* and restored again in libpng-1.2.30, may cause some applications that
@@ -471,7 +481,7 @@
if (png_ptr == NULL)
return (NULL);
- /* added at libpng-1.2.6 */
+ /* Added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
@@ -542,7 +552,7 @@
}
}
- /* initialize zbuf - compression buffer */
+ /* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
@@ -636,7 +646,7 @@
{
png_structp png_ptr=*ptr_ptr;
#ifdef PNG_SETJMP_SUPPORTED
- jmp_buf tmp_jmp; /* to save current jump buffer */
+ jmp_buf tmp_jmp; /* To save current jump buffer */
#endif
int i = 0;
@@ -662,7 +672,7 @@
png_debug(1, "in png_write_init_3");
#ifdef PNG_SETJMP_SUPPORTED
- /* save jump buffer and error functions */
+ /* Save jump buffer and error functions */
png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
#endif
@@ -673,24 +683,24 @@
*ptr_ptr = png_ptr;
}
- /* reset all variables to 0 */
+ /* Reset all variables to 0 */
png_memset(png_ptr, 0, png_sizeof(png_struct));
- /* added at libpng-1.2.6 */
+ /* Added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
#endif
#ifdef PNG_SETJMP_SUPPORTED
- /* restore jump buffer */
+ /* Restore jump buffer */
png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
#endif
png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL,
png_flush_ptr_NULL);
- /* initialize zbuf - compression buffer */
+ /* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
@@ -710,15 +720,15 @@
png_write_rows(png_structp png_ptr, png_bytepp row,
png_uint_32 num_rows)
{
- png_uint_32 i; /* row counter */
- png_bytepp rp; /* row pointer */
+ png_uint_32 i; /* Row counter */
+ png_bytepp rp; /* Row pointer */
png_debug(1, "in png_write_rows");
if (png_ptr == NULL)
return;
- /* loop through the rows */
+ /* Loop through the rows */
for (i = 0, rp = row; i < num_rows; i++, rp++)
{
png_write_row(png_ptr, *rp);
@@ -731,25 +741,26 @@
void PNGAPI
png_write_image(png_structp png_ptr, png_bytepp image)
{
- png_uint_32 i; /* row index */
- int pass, num_pass; /* pass variables */
- png_bytepp rp; /* points to current row */
+ png_uint_32 i; /* Row index */
+ int pass, num_pass; /* Pass variables */
+ png_bytepp rp; /* Points to current row */
if (png_ptr == NULL)
return;
png_debug(1, "in png_write_image");
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
- /* intialize interlace handling. If image is not interlaced,
- this will set pass to 1 */
+ /* Initialize interlace handling. If image is not interlaced,
+ * this will set pass to 1
+ */
num_pass = png_set_interlace_handling(png_ptr);
#else
num_pass = 1;
#endif
- /* loop through passes */
+ /* Loop through passes */
for (pass = 0; pass < num_pass; pass++)
{
- /* loop through image */
+ /* Loop through image */
for (i = 0, rp = image; i < png_ptr->height; i++, rp++)
{
png_write_row(png_ptr, *rp);
@@ -757,7 +768,7 @@
}
}
-/* called by user to write a row of image data */
+/* Called by user to write a row of image data */
void PNGAPI
png_write_row(png_structp png_ptr, png_bytep row)
{
@@ -766,49 +777,49 @@
png_debug2(1, "in png_write_row (row %ld, pass %d)",
png_ptr->row_number, png_ptr->pass);
- /* initialize transformations and other stuff if first time */
+ /* Initialize transformations and other stuff if first time */
if (png_ptr->row_number == 0 && png_ptr->pass == 0)
{
- /* 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.");
+ /* 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.");
- /* check for transforms that have been set but were defined out */
+ /* 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.");
+ 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.");
+ if (png_ptr->transformations & PNG_FILLER)
+ png_warning(png_ptr, "PNG_WRITE_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_WRITE_PACKSWAP_SUPPORTED is not defined.");
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ 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.");
+ 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.");
+ 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.");
+ 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.");
+ if (png_ptr->transformations & PNG_SWAP_BYTES)
+ png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined.");
#endif
png_write_start_row(png_ptr);
}
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
- /* if interlaced and not interested in row, return */
+ /* If interlaced and not interested in row, return */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
switch (png_ptr->pass)
@@ -866,7 +877,7 @@
}
#endif
- /* set up row info for transformations */
+ /* 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;
@@ -889,13 +900,13 @@
png_ptr->row_info.rowbytes);
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
- /* handle interlacing */
+ /* Handle interlacing */
if (png_ptr->interlaced && png_ptr->pass < 6 &&
(png_ptr->transformations & PNG_INTERLACE))
{
png_do_write_interlace(&(png_ptr->row_info),
png_ptr->row_buf + 1, png_ptr->pass);
- /* this should always get caught above, but still ... */
+ /* This should always get caught above, but still ... */
if (!(png_ptr->row_info.width))
{
png_write_finish_row(png_ptr);
@@ -904,7 +915,7 @@
}
#endif
- /* handle other transformations */
+ /* Handle other transformations */
if (png_ptr->transformations)
png_do_write_transformations(png_ptr);
@@ -944,7 +955,7 @@
png_ptr->flush_dist = (nrows < 0 ? 0 : nrows);
}
-/* flush the current output buffers now */
+/* Flush the current output buffers now */
void PNGAPI
png_write_flush(png_structp png_ptr)
{
@@ -955,17 +966,17 @@
return;
/* We have already written out all of the data */
if (png_ptr->row_number >= png_ptr->num_rows)
- return;
+ return;
do
{
int ret;
- /* compress the data */
+ /* Compress the data */
ret = deflate(&png_ptr->zstream, Z_SYNC_FLUSH);
wrote_IDAT = 0;
- /* check for compression errors */
+ /* Check for compression errors */
if (ret != Z_OK)
{
if (png_ptr->zstream.msg != NULL)
@@ -976,7 +987,7 @@
if (!(png_ptr->zstream.avail_out))
{
- /* write the IDAT and reset the zlib output buffer */
+ /* 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;
@@ -988,7 +999,7 @@
/* 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 */
+ /* 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;
@@ -999,7 +1010,7 @@
}
#endif /* PNG_WRITE_FLUSH_SUPPORTED */
-/* free all memory used by the write */
+/* Free all memory used by the write */
void PNGAPI
png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
{
@@ -1075,7 +1086,7 @@
png_write_destroy(png_structp png_ptr)
{
#ifdef PNG_SETJMP_SUPPORTED
- jmp_buf tmp_jmp; /* save jump buffer */
+ jmp_buf tmp_jmp; /* Save jump buffer */
#endif
png_error_ptr error_fn;
png_error_ptr warning_fn;
@@ -1085,10 +1096,10 @@
#endif
png_debug(1, "in png_write_destroy");
- /* free any memory zlib uses */
+ /* Free any memory zlib uses */
deflateEnd(&png_ptr->zstream);
- /* free our memory. png_free checks NULL for us. */
+ /* Free our memory. png_free checks NULL for us. */
png_free(png_ptr, png_ptr->zbuf);
png_free(png_ptr, png_ptr->row_buf);
#ifndef PNG_NO_WRITE_FILTER
@@ -1112,7 +1123,7 @@
#endif
#ifdef PNG_SETJMP_SUPPORTED
- /* reset structure */
+ /* Reset structure */
png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
#endif
@@ -1415,7 +1426,7 @@
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 */
+ /* Avoid libpng bug with 256-byte windows */
if (window_bits == 8)
{
png_warning(png_ptr, "Compression window is being reset to 512");
@@ -1468,9 +1479,9 @@
if (png_ptr == NULL || info_ptr == NULL)
return;
#if defined(PNG_WRITE_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
/* Write the file header information. */
@@ -1479,9 +1490,9 @@
/* ------ these transformations don't touch the info structure ------- */
#if defined(PNG_WRITE_INVERT_SUPPORTED)
- /* invert monochrome pixels */
+ /* Invert monochrome pixels */
if (transforms & PNG_TRANSFORM_INVERT_MONO)
- png_set_invert_mono(png_ptr);
+ png_set_invert_mono(png_ptr);
#endif
#if defined(PNG_WRITE_SHIFT_SUPPORTED)
@@ -1490,57 +1501,57 @@
*/
if ((transforms & PNG_TRANSFORM_SHIFT)
&& (info_ptr->valid & PNG_INFO_sBIT))
- png_set_shift(png_ptr, &info_ptr->sig_bit);
+ png_set_shift(png_ptr, &info_ptr->sig_bit);
#endif
#if defined(PNG_WRITE_PACK_SUPPORTED)
- /* pack pixels into bytes */
+ /* Pack pixels into bytes */
if (transforms & PNG_TRANSFORM_PACKING)
png_set_packing(png_ptr);
#endif
#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
- /* swap location of alpha bytes from ARGB to RGBA */
+ /* Swap location of alpha bytes from ARGB to RGBA */
if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
- png_set_swap_alpha(png_ptr);
+ png_set_swap_alpha(png_ptr);
#endif
#if defined(PNG_WRITE_FILLER_SUPPORTED)
/* Pack XRGB/RGBX/ARGB/RGBA into * RGB (4 channels -> 3 channels) */
- if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER)
+ if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER)
png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
- else if (transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE)
+ else if (transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE)
png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
#endif
#if defined(PNG_WRITE_BGR_SUPPORTED)
- /* flip BGR pixels to RGB */
+ /* Flip BGR pixels to RGB */
if (transforms & PNG_TRANSFORM_BGR)
- png_set_bgr(png_ptr);
+ png_set_bgr(png_ptr);
#endif
#if defined(PNG_WRITE_SWAP_SUPPORTED)
- /* swap bytes of 16-bit files to most significant byte first */
+ /* Swap bytes of 16-bit files to most significant byte first */
if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
- png_set_swap(png_ptr);
+ png_set_swap(png_ptr);
#endif
#if defined(PNG_WRITE_PACKSWAP_SUPPORTED)
- /* swap bits of 1, 2, 4 bit packed pixel formats */
+ /* Swap bits of 1, 2, 4 bit packed pixel formats */
if (transforms & PNG_TRANSFORM_PACKSWAP)
- png_set_packswap(png_ptr);
+ png_set_packswap(png_ptr);
#endif
/* ----------------------- end of transformations ------------------- */
- /* write the bits */
+ /* Write the bits */
if (info_ptr->valid & PNG_INFO_IDAT)
png_write_image(png_ptr, info_ptr->row_pointers);
/* It is REQUIRED to call this to finish writing the rest of the file */
png_write_end(png_ptr, info_ptr);
- transforms = transforms; /* quiet compiler warnings */
+ transforms = transforms; /* Quiet compiler warnings */
params = params;
}
#endif
diff --git a/pngwtran.c b/pngwtran.c
index 398fc41..ac56339 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,9 +1,9 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
- * Last changed in libpng 1.2.9 April 14, 2006
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2009 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.)
*/
@@ -26,7 +26,7 @@
#if defined(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 function */
+ (*(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 */
@@ -248,7 +248,7 @@
channels++;
}
- /* with low row depths, could only be grayscale, so one channel */
+ /* With low row depths, could only be grayscale, so one channel */
if (row_info->bit_depth < 8)
{
png_bytep bp = row;
@@ -439,7 +439,7 @@
png_uint_32 row_width = row_info->width;
for (i = 0, sp = dp = row; i < row_width; i++)
{
- /* does nothing
+ /* Does nothing
*(dp++) = *(sp++);
*(dp++) = *(sp++);
*(dp++) = *(sp++);
@@ -457,7 +457,7 @@
for (i = 0, sp = dp = row; i < row_width; i++)
{
- /* does nothing
+ /* Does nothing
*(dp++) = *(sp++);
*(dp++) = *(sp++);
*(dp++) = *(sp++);
@@ -495,7 +495,7 @@
for (i = 0, sp = dp = row; i < row_width; i++)
{
- /* does nothing
+ /* Does nothing
*(dp++) = *(sp++);
*(dp++) = *(sp++);
*/
@@ -510,7 +510,7 @@
#endif
#if defined(PNG_MNG_FEATURES_SUPPORTED)
-/* undoes intrapixel differencing */
+/* Undoes intrapixel differencing */
void /* PRIVATE */
png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
{
diff --git a/pngwutil.c b/pngwutil.c
index 3f55f57..22a83cc 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
- * Last changed in libpng 1.2.36 [May 7, 2009]
+ * Last changed in libpng 1.2.36 [June 4, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -60,7 +60,7 @@
{
png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
- /* write the rest of the 8 byte signature */
+ /* 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)
@@ -80,7 +80,8 @@
png_write_chunk(png_structp png_ptr, png_bytep chunk_name,
png_bytep data, png_size_t length)
{
- if (png_ptr == NULL) return;
+ 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);
@@ -98,15 +99,16 @@
png_debug2(0, "Writing %s chunk, length = %lu", chunk_name,
(unsigned long)length);
- if (png_ptr == NULL) return;
+ if (png_ptr == NULL)
+ return;
- /* write the length and the chunk name */
+ /* 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);
- /* put the chunk name into png_ptr->chunk_name */
+ /* Put the chunk name into png_ptr->chunk_name */
png_memcpy(png_ptr->chunk_name, chunk_name, 4);
- /* reset the crc and run it over the chunk name */
+ /* Reset the crc and run it over the chunk name */
png_reset_crc(png_ptr);
png_calculate_crc(png_ptr, chunk_name, (png_size_t)4);
}
@@ -119,12 +121,13 @@
void PNGAPI
png_write_chunk_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
- /* write the data, and run the CRC over it */
- if (png_ptr == NULL) return;
+ /* 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,
+ /* Update the CRC after writing the data,
* in case that the user I/O routine alters it.
*/
png_calculate_crc(png_ptr, data, length);
@@ -139,15 +142,14 @@
if (png_ptr == NULL) return;
- /* write the crc in a single operation */
+ /* Write the crc in a single operation */
png_save_uint_32(buf, png_ptr->crc);
png_write_data(png_ptr, buf, (png_size_t)4);
}
#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_iCCP_SUPPORTED)
-/*
- * This pair of functions encapsulates the operation of (a) compressing a
+/* 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
* set up by the caller in order to make the whole mess thread-safe.
@@ -155,14 +157,14 @@
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 */
+ 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 */
} compression_state;
-/* compress given text into storage in the png_ptr structure */
+/* 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,
@@ -176,7 +178,7 @@
comp->input = NULL;
comp->input_len = 0;
- /* we may just want to pass the text right through */
+ /* We may just want to pass the text right through */
if (compression == PNG_TEXT_COMPRESSION_NONE)
{
comp->input = text;
@@ -210,29 +212,29 @@
* wouldn't cause a failure, just a slowdown due to swapping).
*/
- /* set up the compression buffers */
+ /* Set up the compression buffers */
png_ptr->zstream.avail_in = (uInt)text_len;
png_ptr->zstream.next_in = (Bytef *)text;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
png_ptr->zstream.next_out = (Bytef *)png_ptr->zbuf;
- /* this is the same compression loop as in png_write_row() */
+ /* This is the same compression loop as in png_write_row() */
do
{
- /* compress the data */
+ /* Compress the data */
ret = deflate(&png_ptr->zstream, Z_NO_FLUSH);
if (ret != Z_OK)
{
- /* error */
+ /* 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 */
+ /* Check to see if we need more room */
if (!(png_ptr->zstream.avail_out))
{
- /* make sure the output array has room */
+ /* Make sure the output array has room */
if (comp->num_output_ptr >= comp->max_output_ptr)
{
int old_max;
@@ -257,7 +259,7 @@
(comp->max_output_ptr * png_sizeof(png_charp)));
}
- /* save the data */
+ /* Save the data */
comp->output_ptr[comp->num_output_ptr] =
(png_charp)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
@@ -269,21 +271,21 @@
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
png_ptr->zstream.next_out = png_ptr->zbuf;
}
- /* continue until we don't have any more to compress */
+ /* Continue until we don't have any more to compress */
} while (png_ptr->zstream.avail_in);
- /* finish the compression */
+ /* Finish the compression */
do
{
- /* tell zlib we are finished */
+ /* Tell zlib we are finished */
ret = deflate(&png_ptr->zstream, Z_FINISH);
if (ret == Z_OK)
{
- /* check to see if we need more room */
+ /* Check to see if we need more room */
if (!(png_ptr->zstream.avail_out))
{
- /* check to make sure our output array has room */
+ /* Check to make sure our output array has room */
if (comp->num_output_ptr >= comp->max_output_ptr)
{
int old_max;
@@ -309,7 +311,7 @@
png_sizeof(png_charp)));
}
- /* save off the data */
+ /* Save the data */
comp->output_ptr[comp->num_output_ptr] =
(png_charp)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
@@ -324,7 +326,7 @@
}
else if (ret != Z_STREAM_END)
{
- /* we got an error */
+ /* We got an error */
if (png_ptr->zstream.msg != NULL)
png_error(png_ptr, png_ptr->zstream.msg);
else
@@ -332,7 +334,7 @@
}
} while (ret != Z_STREAM_END);
- /* text length is number of buffers plus last buffer */
+ /* 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;
@@ -340,21 +342,21 @@
return((int)text_len);
}
-/* ship the compressed text out via chunk writes */
+/* Ship the compressed text out via chunk writes */
static void /* PRIVATE */
png_write_compressed_data_out(png_structp png_ptr, compression_state *comp)
{
int i;
- /* handle the no-compression case */
+ /* Handle the no-compression case */
if (comp->input)
{
- png_write_chunk_data(png_ptr, (png_bytep)comp->input,
+ png_write_chunk_data(png_ptr, (png_bytep)comp->input,
(png_size_t)comp->input_len);
- return;
+ return;
}
- /* write saved output buffers, if any */
+ /* 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],
@@ -365,12 +367,12 @@
if (comp->max_output_ptr != 0)
png_free(png_ptr, comp->output_ptr);
comp->output_ptr=NULL;
- /* write anything left in zbuf */
+ /* 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));
- /* reset zlib for another zTXt/iTXt or image data */
+ /* Reset zlib for another zTXt/iTXt or image data */
deflateReset(&png_ptr->zstream);
png_ptr->zstream.data_type = Z_BINARY;
}
@@ -390,7 +392,7 @@
#endif
int ret;
- png_byte buf[13]; /* buffer to store the IHDR info */
+ png_byte buf[13]; /* Buffer to store the IHDR info */
png_debug(1, "in png_write_IHDR");
/* Check that we have valid input data from the application info */
@@ -476,7 +478,7 @@
interlace_type=PNG_INTERLACE_NONE;
#endif
- /* save off the relevent information */
+ /* Save the relevent information */
png_ptr->bit_depth = (png_byte)bit_depth;
png_ptr->color_type = (png_byte)color_type;
png_ptr->interlaced = (png_byte)interlace_type;
@@ -489,12 +491,12 @@
png_ptr->pixel_depth = (png_byte)(bit_depth * png_ptr->channels);
png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, width);
- /* set the usr info, so any transformations can modify it */
+ /* Set the usr info, so any transformations can modify it */
png_ptr->usr_width = png_ptr->width;
png_ptr->usr_bit_depth = png_ptr->bit_depth;
png_ptr->usr_channels = png_ptr->channels;
- /* pack the header information into the buffer */
+ /* Pack the header information into the buffer */
png_save_uint_32(buf, width);
png_save_uint_32(buf + 4, height);
buf[8] = (png_byte)bit_depth;
@@ -503,10 +505,10 @@
buf[11] = (png_byte)filter_type;
buf[12] = (png_byte)interlace_type;
- /* write the chunk */
+ /* Write the chunk */
png_write_chunk(png_ptr, (png_bytep)png_IHDR, buf, (png_size_t)13);
- /* initialize zlib with PNG info */
+ /* Initialize zlib with PNG info */
png_ptr->zstream.zalloc = png_zalloc;
png_ptr->zstream.zfree = png_zfree;
png_ptr->zstream.opaque = (voidpf)png_ptr;
@@ -549,13 +551,13 @@
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 */
+ /* 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;
}
-/* write the palette. We are careful not to trust png_color to be in the
+/* Write the palette. We are careful not to trust png_color to be in the
* correct order for PNG, so people can redefine it to any convenient
* structure.
*/
@@ -622,7 +624,7 @@
png_ptr->mode |= PNG_HAVE_PLTE;
}
-/* write an IDAT chunk */
+/* Write an IDAT chunk */
void /* PRIVATE */
png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
{
@@ -639,9 +641,11 @@
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. */
- /* The conditions below are practically always satisfied;
- however, they still must be checked. */
+ /* Avoid memory underflows and multiplication overflows.
+ *
+ * The conditions below are practically always satisfied;
+ * however, they still must be checked.
+ */
if (length >= 2 &&
png_ptr->height < 16384 && png_ptr->width < 16384)
{
@@ -674,7 +678,7 @@
png_ptr->mode |= PNG_HAVE_IDAT;
}
-/* write an IEND chunk */
+/* Write an IEND chunk */
void /* PRIVATE */
png_write_IEND(png_structp png_ptr)
{
@@ -688,7 +692,7 @@
}
#if defined(PNG_WRITE_gAMA_SUPPORTED)
-/* write a gAMA chunk */
+/* Write a gAMA chunk */
#ifdef PNG_FLOATING_POINT_SUPPORTED
void /* PRIVATE */
png_write_gAMA(png_structp png_ptr, double file_gamma)
@@ -724,7 +728,7 @@
#endif
#if defined(PNG_WRITE_sRGB_SUPPORTED)
-/* write a sRGB chunk */
+/* Write a sRGB chunk */
void /* PRIVATE */
png_write_sRGB(png_structp png_ptr, int srgb_intent)
{
@@ -743,7 +747,7 @@
#endif
#if defined(PNG_WRITE_iCCP_SUPPORTED)
-/* write an iCCP chunk */
+/* 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)
@@ -800,7 +804,7 @@
profile_len = png_text_compress(png_ptr, profile,
(png_size_t)profile_len, PNG_COMPRESSION_TYPE_BASE, &comp);
- /* make sure we include the NULL after the name and the compression type */
+ /* 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));
new_name[name_len + 1] = 0x00;
@@ -816,7 +820,7 @@
#endif
#if defined(PNG_WRITE_sPLT_SUPPORTED)
-/* write a sPLT chunk */
+/* Write a sPLT chunk */
void /* PRIVATE */
png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
{
@@ -834,18 +838,17 @@
#endif
png_debug(1, "in png_write_sPLT");
- if ((name_len = png_check_keyword(png_ptr,
- spalette->name, &new_name))==0)
- return;
+ if ((name_len = png_check_keyword(png_ptr,spalette->name, &new_name))==0)
+ return;
- /* make sure we include the NULL after the name */
+ /* 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_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);
- /* loop through each palette entry, writing appropriately */
+ /* Loop through each palette entry, writing appropriately */
#ifndef PNG_NO_POINTER_INDEXING
for (ep = spalette->entries; ep<spalette->entries + spalette->nentries; ep++)
{
@@ -897,7 +900,7 @@
#endif
#if defined(PNG_WRITE_sBIT_SUPPORTED)
-/* write the sBIT chunk */
+/* Write the sBIT chunk */
void /* PRIVATE */
png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
{
@@ -908,7 +911,7 @@
png_size_t size;
png_debug(1, "in png_write_sBIT");
- /* make sure we don't depend upon the order of PNG_COLOR_8 */
+ /* Make sure we don't depend upon the order of PNG_COLOR_8 */
if (color_type & PNG_COLOR_MASK_COLOR)
{
png_byte maxbits;
@@ -953,7 +956,7 @@
#endif
#if defined(PNG_WRITE_cHRM_SUPPORTED)
-/* write the cHRM chunk */
+/* Write the cHRM chunk */
#ifdef PNG_FLOATING_POINT_SUPPORTED
void /* PRIVATE */
png_write_cHRM(png_structp png_ptr, double white_x, double white_y,
@@ -984,21 +987,21 @@
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);
+ /* 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 + 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 + 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_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);
+ png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
}
}
#endif
@@ -1015,32 +1018,32 @@
png_byte buf[32];
png_debug(1, "in png_write_cHRM");
- /* each value is saved in 1/100,000ths */
+ /* Each value is saved in 1/100,000ths */
#if !defined(PNG_NO_CHECK_cHRM)
if (png_check_cHRM_fixed(png_ptr, white_x, white_y, red_x, red_y,
green_x, green_y, blue_x, blue_y))
#endif
{
- png_save_uint_32(buf, (png_uint_32)white_x);
- png_save_uint_32(buf + 4, (png_uint_32)white_y);
+ png_save_uint_32(buf, (png_uint_32)white_x);
+ png_save_uint_32(buf + 4, (png_uint_32)white_y);
- png_save_uint_32(buf + 8, (png_uint_32)red_x);
- png_save_uint_32(buf + 12, (png_uint_32)red_y);
+ png_save_uint_32(buf + 8, (png_uint_32)red_x);
+ png_save_uint_32(buf + 12, (png_uint_32)red_y);
- png_save_uint_32(buf + 16, (png_uint_32)green_x);
- png_save_uint_32(buf + 20, (png_uint_32)green_y);
+ png_save_uint_32(buf + 16, (png_uint_32)green_x);
+ png_save_uint_32(buf + 20, (png_uint_32)green_y);
- png_save_uint_32(buf + 24, (png_uint_32)blue_x);
- png_save_uint_32(buf + 28, (png_uint_32)blue_y);
+ 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_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
}
}
#endif
#endif
#if defined(PNG_WRITE_tRNS_SUPPORTED)
-/* write the tRNS chunk */
+/* Write the tRNS chunk */
void /* PRIVATE */
png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
int num_trans, int color_type)
@@ -1058,13 +1061,13 @@
png_warning(png_ptr, "Invalid number of transparent colors specified");
return;
}
- /* write the chunk out as it is */
+ /* Write the chunk out as it is */
png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans,
(png_size_t)num_trans);
}
else if (color_type == PNG_COLOR_TYPE_GRAY)
{
- /* one 16 bit value */
+ /* One 16 bit value */
if (tran->gray >= (1 << png_ptr->bit_depth))
{
png_warning(png_ptr,
@@ -1076,7 +1079,7 @@
}
else if (color_type == PNG_COLOR_TYPE_RGB)
{
- /* three 16 bit values */
+ /* 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);
@@ -1096,7 +1099,7 @@
#endif
#if defined(PNG_WRITE_bKGD_SUPPORTED)
-/* write the background chunk */
+/* Write the background chunk */
void /* PRIVATE */
png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
{
@@ -1149,7 +1152,7 @@
#endif
#if defined(PNG_WRITE_hIST_SUPPORTED)
-/* write the histogram */
+/* Write the histogram */
void /* PRIVATE */
png_write_hIST(png_structp png_ptr, png_uint_16p hist, int num_hist)
{
@@ -1249,8 +1252,8 @@
while (*kp == ' ')
{
- *(kp--) = '\0';
- key_len--;
+ *(kp--) = '\0';
+ key_len--;
}
}
@@ -1262,8 +1265,8 @@
while (*kp == ' ')
{
- kp++;
- key_len--;
+ kp++;
+ key_len--;
}
}
@@ -1311,7 +1314,7 @@
#endif
#if defined(PNG_WRITE_tEXt_SUPPORTED)
-/* write a tEXt chunk */
+/* Write a tEXt chunk */
void /* PRIVATE */
png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text,
png_size_t text_len)
@@ -1331,7 +1334,7 @@
else
text_len = png_strlen(text);
- /* make sure we include the 0 after the key */
+ /* 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));
/*
@@ -1351,7 +1354,7 @@
#endif
#if defined(PNG_WRITE_zTXt_SUPPORTED)
-/* write a compressed text chunk */
+/* 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)
@@ -1387,31 +1390,31 @@
text_len = png_strlen(text);
- /* compute the compressed data; do it now for the length */
+ /* Compute the compressed data; do it now for the length */
text_len = png_text_compress(png_ptr, text, text_len, compression,
&comp);
- /* write start of chunk */
+ /* Write start of chunk */
png_write_chunk_start(png_ptr, (png_bytep)png_zTXt,
(png_uint_32)(key_len+text_len + 2));
- /* write key */
+ /* Write key */
png_write_chunk_data(png_ptr, (png_bytep)new_key,
(png_size_t)(key_len + 1));
png_free(png_ptr, new_key);
buf[0] = (png_byte)compression;
- /* write compression */
+ /* Write compression */
png_write_chunk_data(png_ptr, (png_bytep)buf, (png_size_t)1);
- /* write the compressed data */
+ /* Write the compressed data */
png_write_compressed_data_out(png_ptr, &comp);
- /* close the chunk */
+ /* Close the chunk */
png_write_chunk_end(png_ptr);
}
#endif
#if defined(PNG_WRITE_iTXt_SUPPORTED)
-/* write an iTXt chunk */
+/* 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)
@@ -1443,21 +1446,21 @@
}
if (lang_key == NULL)
- lang_key_len = 0;
+ lang_key_len = 0;
else
- lang_key_len = png_strlen(lang_key);
+ lang_key_len = png_strlen(lang_key);
if (text == NULL)
text_len = 0;
else
- text_len = png_strlen(text);
+ text_len = png_strlen(text);
- /* compute the compressed data; do it now for the length */
+ /* Compute the compressed data; do it now for the length */
text_len = png_text_compress(png_ptr, text, text_len, compression-2,
&comp);
- /* make sure we include the compression flag, the compression byte,
+ /* Make sure we include the compression flag, the compression byte,
* and the NULs after the key, lang, and lang_key parts */
png_write_chunk_start(png_ptr, (png_bytep)png_iTXt,
@@ -1468,8 +1471,7 @@
+ lang_key_len
+ text_len));
- /*
- * We leave it to the application to meet PNG-1.0 requirements on the
+ /* 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
* 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.
@@ -1477,13 +1479,13 @@
png_write_chunk_data(png_ptr, (png_bytep)new_key,
(png_size_t)(key_len + 1));
- /* set the compression flag */
+ /* Set the compression flag */
if (compression == PNG_ITXT_COMPRESSION_NONE || \
compression == PNG_TEXT_COMPRESSION_NONE)
cbuf[0] = 0;
else /* compression == PNG_ITXT_COMPRESSION_zTXt */
cbuf[0] = 1;
- /* set the compression method */
+ /* Set the compression method */
cbuf[1] = 0;
png_write_chunk_data(png_ptr, cbuf, (png_size_t)2);
@@ -1501,7 +1503,7 @@
#endif
#if defined(PNG_WRITE_oFFs_SUPPORTED)
-/* write the oFFs chunk */
+/* 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)
@@ -1523,7 +1525,7 @@
}
#endif
#if defined(PNG_WRITE_pCAL_SUPPORTED)
-/* write the pCAL chunk (described in the PNG extensions document) */
+/* 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)
@@ -1585,7 +1587,7 @@
#endif
#if defined(PNG_WRITE_sCAL_SUPPORTED)
-/* write the sCAL chunk */
+/* Write the sCAL chunk */
#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO)
void /* PRIVATE */
png_write_sCAL(png_structp png_ptr, int unit, double width, double height)
@@ -1648,8 +1650,8 @@
}
buf[0] = (png_byte)unit;
- png_memcpy(buf + 1, width, wlen + 1); /* append the '\0' here */
- png_memcpy(buf + wlen + 2, height, hlen); /* do NOT append the '\0' here */
+ png_memcpy(buf + 1, width, wlen + 1); /* Append the '\0' here */
+ 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);
@@ -1659,7 +1661,7 @@
#endif
#if defined(PNG_WRITE_pHYs_SUPPORTED)
-/* write the pHYs chunk */
+/* 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,
@@ -1714,24 +1716,24 @@
}
#endif
-/* initializes the row writing capability of libpng */
+/* Initializes the row writing capability of libpng */
void /* PRIVATE */
png_write_start_row(png_structp png_ptr)
{
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
#ifdef PNG_USE_LOCAL_ARRAYS
- /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
- /* start of interlace block */
+ /* Start of interlace block */
int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
- /* offset to next interlace block */
+ /* Offset to next interlace block */
int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
- /* start of interlace block in the y direction */
+ /* Start of interlace block in the y direction */
int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
- /* offset to next interlace block in the y direction */
+ /* Offset to next interlace block in the y direction */
int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
#endif
@@ -1742,13 +1744,13 @@
buf_size = (png_size_t)(PNG_ROWBYTES(
png_ptr->usr_channels*png_ptr->usr_bit_depth, png_ptr->width) + 1);
- /* set up row buffer */
+ /* Set up row buffer */
png_ptr->row_buf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)buf_size);
png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;
#ifndef PNG_NO_WRITE_FILTER
- /* set up filtering buffer, if using this filter */
+ /* 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,
@@ -1759,7 +1761,7 @@
/* We only need to keep the previous row if we are using one of these. */
if (png_ptr->do_filter & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH))
{
- /* set up previous row buffer */
+ /* Set up previous row buffer */
png_ptr->prev_row = (png_bytep)png_malloc(png_ptr,
(png_uint_32)buf_size);
png_memset(png_ptr->prev_row, 0, buf_size);
@@ -1788,7 +1790,7 @@
#endif /* PNG_NO_WRITE_FILTER */
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- /* if interlaced, we need to set up width and height of pass */
+ /* If interlaced, we need to set up width and height of pass */
if (png_ptr->interlaced)
{
if (!(png_ptr->transformations & PNG_INTERLACE))
@@ -1820,18 +1822,18 @@
{
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
#ifdef PNG_USE_LOCAL_ARRAYS
- /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
- /* start of interlace block */
+ /* Start of interlace block */
int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
- /* offset to next interlace block */
+ /* Offset to next interlace block */
int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
- /* start of interlace block in the y direction */
+ /* Start of interlace block in the y direction */
int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
- /* offset to next interlace block in the y direction */
+ /* Offset to next interlace block in the y direction */
int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
#endif
@@ -1839,15 +1841,15 @@
int ret;
png_debug(1, "in png_write_finish_row");
- /* next row */
+ /* Next row */
png_ptr->row_number++;
- /* see if we are done */
+ /* See if we are done */
if (png_ptr->row_number < png_ptr->num_rows)
return;
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- /* if interlaced, go to next pass */
+ /* If interlaced, go to next pass */
if (png_ptr->interlaced)
{
png_ptr->row_number = 0;
@@ -1857,7 +1859,7 @@
}
else
{
- /* loop until we find a non-zero width or height pass */
+ /* Loop until we find a non-zero width or height pass */
do
{
png_ptr->pass++;
@@ -1877,7 +1879,7 @@
}
- /* reset the row above the image for the next pass */
+ /* Reset the row above the image for the next pass */
if (png_ptr->pass < 7)
{
if (png_ptr->prev_row != NULL)
@@ -1889,16 +1891,16 @@
}
#endif
- /* if we get here, we've just written the last row, so we need
+ /* If we get here, we've just written the last row, so we need
to flush the compressor */
do
{
- /* tell the compressor we are done */
+ /* Tell the compressor we are done */
ret = deflate(&png_ptr->zstream, Z_FINISH);
- /* check for an error */
+ /* Check for an error */
if (ret == Z_OK)
{
- /* check to see if we need more room */
+ /* Check to see if we need more room */
if (!(png_ptr->zstream.avail_out))
{
png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size);
@@ -1915,7 +1917,7 @@
}
} while (ret != Z_STREAM_END);
- /* write any extra space */
+ /* Write any extra space */
if (png_ptr->zstream.avail_out < png_ptr->zbuf_size)
{
png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size -
@@ -1938,24 +1940,24 @@
png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
{
#ifdef PNG_USE_LOCAL_ARRAYS
- /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
- /* start of interlace block */
+ /* Start of interlace block */
int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
- /* offset to next interlace block */
+ /* Offset to next interlace block */
int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
#endif
png_debug(1, "in png_do_write_interlace");
- /* we don't have to do anything on the last pass (6) */
+ /* We don't have to do anything on the last pass (6) */
#if defined(PNG_USELESS_TESTS_SUPPORTED)
if (row != NULL && row_info != NULL && pass < 6)
#else
if (pass < 6)
#endif
{
- /* each pixel depth is handled separately */
+ /* Each pixel depth is handled separately */
switch (row_info->pixel_depth)
{
case 1:
@@ -2066,27 +2068,27 @@
png_uint_32 row_width = row_info->width;
png_size_t pixel_bytes;
- /* start at the beginning */
+ /* Start at the beginning */
dp = row;
- /* find out how many bytes each pixel takes up */
+ /* 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
+ /* 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 */
+ /* Find out where the original pixel is */
sp = row + (png_size_t)i * pixel_bytes;
- /* move the pixel */
+ /* Move the pixel */
if (dp != sp)
png_memcpy(dp, sp, pixel_bytes);
- /* next pixel */
+ /* Next pixel */
dp += pixel_bytes;
}
break;
}
}
- /* set new row width */
+ /* Set new row width */
row_info->width = (row_info->width +
png_pass_inc[pass] - 1 -
png_pass_start[pass]) /
@@ -2119,7 +2121,7 @@
#endif
png_debug(1, "in png_write_find_filter");
- /* find out how many bytes offset each pixel is */
+ /* Find out how many bytes offset each pixel is */
bpp = (row_info->pixel_depth + 7) >> 3;
prev_row = png_ptr->prev_row;
@@ -2206,9 +2208,9 @@
mins = sum;
}
- /* sub filter */
+ /* Sub filter */
if (filter_to_do == PNG_FILTER_SUB)
- /* it's the only filter so no testing is needed */
+ /* It's the only filter so no testing is needed */
{
png_bytep rp, lp, dp;
png_uint_32 i;
@@ -2323,7 +2325,7 @@
}
}
- /* up filter */
+ /* Up filter */
if (filter_to_do == PNG_FILTER_UP)
{
png_bytep rp, dp, pp;
@@ -2426,7 +2428,7 @@
}
}
- /* avg filter */
+ /* Avg filter */
if (filter_to_do == PNG_FILTER_AVG)
{
png_bytep rp, dp, pp, lp;
@@ -2729,18 +2731,18 @@
{
png_debug(1, "in png_write_filtered_row");
png_debug1(2, "filter = %d", filtered_row[0]);
- /* set up the zlib input buffer */
+ /* 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;
- /* repeat until we have compressed all the data */
+ /* Repeat until we have compressed all the data */
do
{
- int ret; /* return of zlib */
+ int ret; /* Return of zlib */
- /* compress the data */
+ /* Compress the data */
ret = deflate(&png_ptr->zstream, Z_NO_FLUSH);
- /* check for compression errors */
+ /* Check for compression errors */
if (ret != Z_OK)
{
if (png_ptr->zstream.msg != NULL)
@@ -2749,18 +2751,18 @@
png_error(png_ptr, "zlib error");
}
- /* see if it is time to write another IDAT */
+ /* See if it is time to write another IDAT */
if (!(png_ptr->zstream.avail_out))
{
- /* write the IDAT and reset the zlib output buffer */
+ /* 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 */
+ /* Repeat until all data has been compressed */
} while (png_ptr->zstream.avail_in);
- /* swap the current and previous rows */
+ /* Swap the current and previous rows */
if (png_ptr->prev_row != NULL)
{
png_bytep tptr;
@@ -2770,7 +2772,7 @@
png_ptr->row_buf = tptr;
}
- /* finish row - updates counters and flushes zlib if last row */
+ /* Finish row - updates counters and flushes zlib if last row */
png_write_finish_row(png_ptr);
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
index 7b821aa..afb27f1 100644
--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -1,4 +1,4 @@
-
+
project(PNG)
# Copyright (C) 2007 Glenn Randers-Pehrson
@@ -6,7 +6,7 @@
set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 0)
-set(PNGLIB_RELEASE 44)
+set(PNGLIB_RELEASE 45)
set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
@@ -169,7 +169,7 @@
# SET UP LINKS
set_target_properties(${PNG_LIB_NAME} PROPERTIES
-# VERSION 0.${PNGLIB_RELEASE}.1.0.44
+# VERSION 0.${PNGLIB_RELEASE}.1.0.45
VERSION 0.${PNGLIB_RELEASE}.0
SOVERSION 0
CLEAN_DIRECT_OUTPUT 1)
@@ -184,7 +184,6 @@
if(PNG_STATIC)
install_targets(/lib ${PNG_LIB_NAME_STATIC})
endif(PNG_STATIC)
-
install(FILES png.h pngconf.h DESTINATION include)
install(FILES png.h pngconf.h DESTINATION include/${PNGLIB_NAME})
install(FILES libpng.3 libpngpf.3 DESTINATION man/man3)
diff --git a/scripts/descrip.mms b/scripts/descrip.mms
index 3584b0d..f3a8d7b 100644
--- a/scripts/descrip.mms
+++ b/scripts/descrip.mms
@@ -1,6 +1,6 @@
cc_defs = /inc=$(ZLIBSRC)
-c_deb =
+c_deb =
.ifdef __DECC__
pref = /prefix=all
@@ -29,7 +29,7 @@
run pngtest
clean :
- delete *.obj;*,*.exe;*
+ delete *.obj;*,*.exe;
# Other dependencies.
@@ -44,9 +44,9 @@
pngmem.obj : png.h, pngconf.h
pngrio.obj : png.h, pngconf.h
pngwio.obj : png.h, pngconf.h
-pngtest.obj : png.h, pngconf.h
pngtrans.obj : png.h, pngconf.h
pngwrite.obj : png.h, pngconf.h
pngwtran.obj : png.h, pngconf.h
pngwutil.obj : png.h, pngconf.h
+pngtest.obj : png.h, pngconf.h
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index 2467550..a1d69fa 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -8,7 +8,7 @@
# Modeled after libxml-config.
-version=1.0.44
+version=1.0.45
prefix=""
libdir=""
libs=""
diff --git a/scripts/libpng-config.in b/scripts/libpng-config.in
index 2f475be..8678320 100755
--- a/scripts/libpng-config.in
+++ b/scripts/libpng-config.in
@@ -19,7 +19,8 @@
L_opts="-L${libdir}"
R_opts=""
cppflags=""
-ccopts="@LIBPNG_NO_MMX@"
+%12-%ccopts="@LIBPNG_NO_MMX@"
+%14+%ccopts=""
ldopts=""
usage()
diff --git a/scripts/libpng.pc-configure.in b/scripts/libpng.pc-configure.in
index cadb555..6de64ff 100644
--- a/scripts/libpng.pc-configure.in
+++ b/scripts/libpng.pc-configure.in
@@ -8,4 +8,5 @@
Version: @PNGLIB_VERSION@
Libs: -L${libdir} -lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
Libs.private: @LIBS@
-Cflags: -I${includedir} @LIBPNG_NO_MMX@
+%12-%Cflags: -I${includedir} @LIBPNG_NO_MMX@
+%14+%Cflags: -I${includedir}
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index f7cca1f..e0441b4 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@
Name: libpng
Description: Loads and saves PNG files
-Version: 1.0.44
+Version: 1.0.45
Libs: -L${libdir} -lpng10
Cflags: -I${includedir}
diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu
index 7c11f0c..6be3796 100644
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -8,7 +8,7 @@
# Library name:
LIBNAME=libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index 8c8fade..96ccc4c 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -8,7 +8,7 @@
# Library name:
LIBNAME=libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
diff --git a/scripts/makefile.acorn b/scripts/makefile.acorn
index 470cf89..a0e577b 100644
--- a/scripts/makefile.acorn
+++ b/scripts/makefile.acorn
@@ -6,11 +6,10 @@
C++flags = -c -depend !Depend -IC: -throwback
Linkflags = -aif -c++ -o $@
ObjAsmflags = -throwback -NoCache -depend !Depend
-CMHGflags =
+CMHGflags =
LibFileflags = -c -l -o $@
Squeezeflags = -o $@
-
# Final targets:
@.libpng-lib: @.o.png @.o.pngerror @.o.pngrio @.o.pngwio @.o.pngmem \
@.o.pngpread @.o.pngset @.o.pngget @.o.pngread @.o.pngrtran \
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index 78c9017..22a0769 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -1,5 +1,5 @@
# makefile for libpng using gcc (generic, static library)
-# Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006-2009 Glenn Randers-Pehrson
# Copyright (C) 2000 Cosmin Truta
# Copyright (C) 2000 Marc O. Gloor (AIX support added, from makefile.gcc)
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
@@ -20,7 +20,7 @@
LIBNAME=libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
prefix=/usr/local
@@ -54,7 +54,7 @@
E=
# Variables
-OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
+OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
@@ -94,20 +94,20 @@
clean:
$(RM_F) *.o $(LIBNAME)$(A) pngtest pngout.png
-png$(O): png.h pngconf.h
+png$(O): png.h pngconf.h
pngerror$(O): png.h pngconf.h
-pngget$(O): png.h pngconf.h
-pngmem$(O): png.h pngconf.h
+pngget$(O): png.h pngconf.h
+pngmem$(O): png.h pngconf.h
pngpread$(O): png.h pngconf.h
-pngread$(O): png.h pngconf.h
-pngrio$(O): png.h pngconf.h
+pngread$(O): png.h pngconf.h
+pngrio$(O): png.h pngconf.h
pngrtran$(O): png.h pngconf.h
pngrutil$(O): png.h pngconf.h
-pngset$(O): png.h pngconf.h
-pngtest$(O): png.h pngconf.h
+pngset$(O): png.h pngconf.h
pngtrans$(O): png.h pngconf.h
-pngwio$(O): png.h pngconf.h
+pngwio$(O): png.h pngconf.h
pngwrite$(O): png.h pngconf.h
pngwtran$(O): png.h pngconf.h
pngwutil$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h
diff --git a/scripts/makefile.bc32 b/scripts/makefile.bc32
index 04407dd..4b96231 100644
--- a/scripts/makefile.bc32
+++ b/scripts/makefile.bc32
@@ -11,7 +11,6 @@
## Where zlib.h, zconf.h and zlib.lib are
ZLIB_DIR=..\zlib
-
## Compiler, linker and lib stuff
CC=bcc32
LD=bcc32
@@ -49,7 +48,6 @@
# -M generate map file
LDFLAGS=-L$(ZLIB_DIR) -M $(LDEBUG)
-
## Variables
OBJS = \
png.obj \
@@ -87,7 +85,6 @@
LIBNAME=libpng.lib
-
## Implicit rules
# Braces let make "batch" calls to the compiler,
# 2 calls instead of 12; space is important.
@@ -100,7 +97,6 @@
.obj.exe:
$(LD) $(LDFLAGS) $*.obj $(LIBNAME) zlib.lib $(NOEHLIB)
-
## Major targets
all: libpng pngtest
@@ -111,25 +107,24 @@
test: pngtest.exe
pngtest
-
## Minor Targets
-png.obj: png.c
-pngerror.obj: pngerror.c
-pngget.obj: pngget.c
-pngmem.obj: pngmem.c
-pngpread.obj: pngpread.c
-pngread.obj: pngread.c
-pngrio.obj: pngrio.c
-pngrtran.obj: pngrtran.c
-pngrutil.obj: pngrutil.c
-pngset.obj: pngset.c
-pngtrans.obj: pngtrans.c
-pngwio.obj: pngwio.c
-pngwrite.obj: pngwrite.c
-pngwtran.obj: pngwtran.c
-pngwutil.obj: pngwutil.c
-
+png.obj: png.c png.h pngconf.h
+pngerror.obj: pngerror.c png.h pngconf.h
+pngget.obj: pngget.c png.h pngconf.h
+pngmem.obj: pngmem.c png.h pngconf.h
+pngpread.obj: pngpread.c png.h pngconf.h
+pngread.obj: pngread.c png.h pngconf.h
+pngrio.obj: pngrio.c png.h pngconf.h
+pngrtran.obj: pngrtran.c png.h pngconf.h
+pngrutil.obj: pngrutil.c png.h pngconf.h
+pngset.obj: pngset.c png.h pngconf.h
+pngtrans.obj: pngtrans.c png.h pngconf.h
+pngwio.obj: pngwio.c png.h pngconf.h
+pngwrite.obj: pngwrite.c png.h pngconf.h
+pngwtran.obj: pngwtran.c png.h pngconf.h
+pngwutil.obj: pngwutil.c png.h pngconf.h
+pngtest.obj: pngtest.c png.h pngconf.h
$(LIBNAME): $(OBJS)
-del $(LIBNAME)
@@ -137,7 +132,6 @@
$(LIBOBJS), libpng
|
-
# Cleanup
clean:
-del *.obj
@@ -148,5 +142,4 @@
-del *.tds
-del pngout.png
-
# End of makefile for libpng
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index e05e886..1218079 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -8,7 +8,7 @@
# Library name:
LIBNAME=libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@@ -223,4 +223,5 @@
pngwtran.o pngwtran.pic.o: png.h pngconf.h
pngwutil.o pngwutil.pic.o: png.h pngconf.h
pngpread.o pngpread.pic.o: png.h pngconf.h
+
pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.bor b/scripts/makefile.bor
index a5651aa..0a8ef00 100644
--- a/scripts/makefile.bor
+++ b/scripts/makefile.bor
@@ -12,7 +12,6 @@
## Where zlib.h, zconf.h and zlib_MODEL.lib are
ZLIB_DIR=..\zlib
-
## Compiler, linker and lib stuff
CC=bcc
LD=bcc
@@ -57,8 +56,8 @@
# -M generate map file
LDFLAGS=-M -L$(ZLIB_DIR) $(MODEL_ARG) $(LDEBUG)
-
## Variables
+
OBJS = \
png.obj \
pngerror.obj \
@@ -95,8 +94,8 @@
LIBNAME=libpng$(MODEL).lib
-
## Implicit rules
+
# Braces let make "batch" calls to the compiler,
# 2 calls instead of 12; space is important.
.c.obj:
@@ -105,8 +104,8 @@
.c.exe:
$(CC) $(CFLAGS) $(LDFLAGS) $*.c $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB)
-
## Major targets
+
all: libpng pngtest
libpng: $(LIBNAME)
@@ -116,25 +115,23 @@
test: pngtest$(MODEL).exe
pngtest$(MODEL)
-
## Minor Targets
-png.obj: png.c
-pngerror.obj: pngerror.c
-pngget.obj: pngget.c
-pngmem.obj: pngmem.c
-pngpread.obj: pngpread.c
-pngread.obj: pngread.c
-pngrio.obj: pngrio.c
-pngrtran.obj: pngrtran.c
-pngrutil.obj: pngrutil.c
-pngset.obj: pngset.c
-pngtrans.obj: pngtrans.c
-pngwio.obj: pngwio.c
-pngwrite.obj: pngwrite.c
-pngwtran.obj: pngwtran.c
-pngwutil.obj: pngwutil.c
-
+png.obj: png.c png.h pngconf.h
+pngerror.obj: pngerror.c png.h pngconf.h
+pngget.obj: pngget.c png.h pngconf.h
+pngmem.obj: pngmem.c png.h pngconf.h
+pngpread.obj: pngpread.c png.h pngconf.h
+pngread.obj: pngread.c png.h pngconf.h
+pngrio.obj: pngrio.c png.h pngconf.h
+pngrtran.obj: pngrtran.c png.h pngconf.h
+pngrutil.obj: pngrutil.c png.h pngconf.h
+pngset.obj: pngset.c png.h pngconf.h
+pngtrans.obj: pngtrans.c png.h pngconf.h
+pngwio.obj: pngwio.c png.h pngconf.h
+pngwrite.obj: pngwrite.c png.h pngconf.h
+pngwtran.obj: pngwtran.c png.h pngconf.h
+pngwutil.obj: pngwutil.c png.h pngconf.h
$(LIBNAME): $(OBJS)
-del $(LIBNAME)
@@ -142,14 +139,12 @@
$(LIBOBJS), libpng$(MODEL)
|
-
pngtest$(MODEL).obj: pngtest.c
$(CC) $(CFLAGS) -opngtest$(MODEL) -c pngtest.c
pngtest$(MODEL).exe: pngtest$(MODEL).obj
$(LD) $(LDFLAGS) pngtest$(MODEL).obj $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB)
-
# Clean up anything else you want
clean:
-del *.obj
@@ -158,5 +153,4 @@
-del *.lst
-del *.map
-
# End of makefile for libpng
diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin
index baa5ef8..08cc566 100644
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -74,7 +74,7 @@
LIBNAME = libpng10
PNGMAJ = 0
CYGDLL = 10
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=cygpng$(CYGDLL).dll
@@ -176,7 +176,7 @@
pngtest.pic.o: pngtest.c
$(CC) $(CFLAGS) -c $< -o $@
-pngtest.o: pngtest.c
+pngtest.o: pngtest.c png.h pngconf.h
$(CC) $(CFLAGS) -c $< -o $@
test: test-static test-shared
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index 715f13b..4d2f385 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -18,8 +18,8 @@
# Library name:
LIBNAME = libpng10
-PNGMAJ = 12
-PNGMIN = 1.0.44
+PNGMAJ = 10
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index 8cbc959..4b1a9bb 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -5,7 +5,7 @@
# Library name:
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng10
@@ -205,10 +205,10 @@
pngread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
pngpread.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.dj2 b/scripts/makefile.dj2
index 09045c2..ac6ffd8 100644
--- a/scripts/makefile.dj2
+++ b/scripts/makefile.dj2
@@ -1,5 +1,5 @@
# DJGPP (DOS gcc) makefile for libpng
-# Copyright (C) 2002 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
# For conditions of distribution and use, see copyright notice in png.h
@@ -47,9 +47,9 @@
pngpread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.elf b/scripts/makefile.elf
index ccff44b..a4bea95 100644
--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -13,7 +13,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
diff --git a/scripts/makefile.freebsd b/scripts/makefile.freebsd
index 59f3644..7a78b31 100644
--- a/scripts/makefile.freebsd
+++ b/scripts/makefile.freebsd
@@ -1,9 +1,10 @@
# makefile for libpng under FreeBSD
-# Copyright (C) 2002, 2007 Glenn Randers-Pehrson and Andrey A. Chernov
+# Copyright (C) 2002, 2007, 2009 Glenn Randers-Pehrson and Andrey A. Chernov
# For conditions of distribution and use, see copyright notice in png.h
PREFIX?= /usr/local
-SHLIB_VER?= 5
+%12-%SHLIB_VER?= 5
+%14+%SHLIB_VER?= %SONUM%
LIB= png
SHLIB_MAJOR= ${SHLIB_VER}
@@ -25,9 +26,9 @@
DPADD+= ${LIBM} ${LIBZ}
CFLAGS+= -I.
-.if (${MACHINE_ARCH} != "i386")
-CFLAGS+= -DPNG_NO_MMX_CODE
-.endif
+%12-%.if (${MACHINE_ARCH} != "i386")
+%12-%CFLAGS+= -DPNG_NO_MMX_CODE
+%12-%.endif
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
diff --git a/scripts/makefile.gcc b/scripts/makefile.gcc
index b2675a4..83aec8b 100644
--- a/scripts/makefile.gcc
+++ b/scripts/makefile.gcc
@@ -31,9 +31,9 @@
EXE=
# Variables
-OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
- pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
- pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
+OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
+ pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
+ pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
# Targets
all: static
@@ -61,20 +61,20 @@
clean:
$(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png
-png$(O): png.h pngconf.h
+png$(O): png.h pngconf.h
pngerror$(O): png.h pngconf.h
-pngget$(O): png.h pngconf.h
-pngmem$(O): png.h pngconf.h
+pngget$(O): png.h pngconf.h
+pngmem$(O): png.h pngconf.h
pngpread$(O): png.h pngconf.h
-pngread$(O): png.h pngconf.h
-pngrio$(O): png.h pngconf.h
+pngread$(O): png.h pngconf.h
+pngrio$(O): png.h pngconf.h
pngrtran$(O): png.h pngconf.h
pngrutil$(O): png.h pngconf.h
-pngset$(O): png.h pngconf.h
-pngtest$(O): png.h pngconf.h
+pngset$(O): png.h pngconf.h
pngtrans$(O): png.h pngconf.h
-pngwio$(O): png.h pngconf.h
+pngwio$(O): png.h pngconf.h
pngwrite$(O): png.h pngconf.h
pngwtran$(O): png.h pngconf.h
pngwutil$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h
diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx
index d635210..ba47b5f 100644
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -14,7 +14,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@@ -64,11 +64,11 @@
### for gcc 2.95.2 on 686:
#CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -W -Wall -O \
# -mcpu=i686 -malign-double -ffast-math -fstrict-aliasing \
-# $(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer
+# $(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer
### for gcc 2.7.2.3 on 486 and up:
#CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -W -Wall -O \
# -m486 -malign-double -ffast-math \
-# $(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer
+# $(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer
LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
diff --git a/scripts/makefile.hp64 b/scripts/makefile.hp64
index 4a8a950..cf61614 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 Glenn Randers-Pehrson
+# Copyright (C) 1999-2002, 2006, 2009 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42
# contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
# For conditions of distribution and use, see copyright notice in png.h
@@ -18,7 +18,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@@ -227,9 +227,10 @@
pngread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
pngpread.o: png.h pngconf.h
+
+pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index 7b2a7a4..fbc1c3a 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -8,7 +8,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index 9209aa6..5e69d01 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -18,7 +18,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@@ -224,9 +224,10 @@
pngread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
pngpread.o: png.h pngconf.h
+
+pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.ibmc b/scripts/makefile.ibmc
index f09a62c..cd8af79 100644
--- a/scripts/makefile.ibmc
+++ b/scripts/makefile.ibmc
@@ -1,5 +1,6 @@
# Makefile for libpng (static)
# IBM C version 3.x for Win32 and OS/2
+# Copyright (C) 2006 Glenn Randers-Pehrson
# Copyright (C) 2000 Cosmin Truta
# For conditions of distribution and use, see copyright notice in png.h
# Notes:
@@ -53,19 +54,20 @@
$(RM) pngtest$(E)
$(RM) pngout.png
-png$(O): png.h pngconf.h
+png$(O): png.h pngconf.h
pngerror$(O): png.h pngconf.h
-pngget$(O): png.h pngconf.h
-pngmem$(O): png.h pngconf.h
+pngget$(O): png.h pngconf.h
+pngmem$(O): png.h pngconf.h
pngpread$(O): png.h pngconf.h
-pngread$(O): png.h pngconf.h
-pngrio$(O): png.h pngconf.h
+pngread$(O): png.h pngconf.h
+pngrio$(O): png.h pngconf.h
pngrtran$(O): png.h pngconf.h
pngrutil$(O): png.h pngconf.h
-pngset$(O): png.h pngconf.h
-pngtest$(O): png.h pngconf.h
+pngset$(O): png.h pngconf.h
pngtrans$(O): png.h pngconf.h
-pngwio$(O): png.h pngconf.h
+pngwio$(O): png.h pngconf.h
pngwrite$(O): png.h pngconf.h
pngwtran$(O): png.h pngconf.h
pngwutil$(O): png.h pngconf.h
+
+pngtest$(O): png.h pngconf.h
diff --git a/scripts/makefile.intel b/scripts/makefile.intel
index b0b523a..5c29e51 100644
--- a/scripts/makefile.intel
+++ b/scripts/makefile.intel
@@ -1,12 +1,14 @@
# Makefile for libpng
# Microsoft Visual C++ with Intel C/C++ Compiler 4.0 and later
+# Copyright (C) 2006 Glenn Randers-Pehrson
# Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is
# copyright 1995 Guy Eric Schalnat, Group 42, Inc.
# For conditions of distribution and use, see copyright notice in png.h
# To use, do "nmake /f scripts\makefile.intel"
+# ------------------- Intel C/C++ Compiler 4.0 and later -------------------
# Where the zlib library and include files are located
ZLIBLIB=..\zlib
@@ -26,7 +28,6 @@
# --------------------------------------------------------------------------
-
CC=icl -c
CFLAGS=-O2 -G$(CPU)$(CALLING) -Qip -Qunroll4 -I$(ZLIBINC) -nologo
LD=link
@@ -73,9 +74,6 @@
pngwio$(O): png.h pngconf.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
-pngtest$(O): png.h pngconf.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
pngtrans$(O): png.h pngconf.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
@@ -95,6 +93,9 @@
pngtest.exe: pngtest.obj libpng.lib
$(LD) $(LDFLAGS) /OUT:pngtest.exe pngtest.obj libpng.lib $(ZLIBLIB)\zlib.lib
+pngtest$(O): png.h pngconf.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
test: pngtest.exe
pngtest.exe
diff --git a/scripts/makefile.knr b/scripts/makefile.knr
index 44ee538..0d17359 100644
--- a/scripts/makefile.knr
+++ b/scripts/makefile.knr
@@ -1,5 +1,5 @@
# makefile for libpng
-# Copyright (C) 2002 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
# For conditions of distribution and use, see copyright notice in png.h
@@ -58,7 +58,7 @@
test: pngtest
./pngtest
-install: libpng.a
+install: libpng.a png.h pngconf.h
-@mkdir $(DESTDIR)$(INCPATH)
-@mkdir $(DESTDIR)$(INCPATH)/libpng
-@mkdir $(DESTDIR)$(LIBPATH)
@@ -92,8 +92,9 @@
pngpread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
+
+pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index 3ed8f10..172a1ea 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -7,7 +7,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@@ -74,7 +74,7 @@
DL=$(DESTDIR)$(LIBPATH)
DM=$(DESTDIR)$(MANPATH)
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
pngwtran.o pngmem.o pngerror.o pngpread.o
diff --git a/scripts/makefile.mingw b/scripts/makefile.mingw
index 2a1827d..93e71dc 100644
--- a/scripts/makefile.mingw
+++ b/scripts/makefile.mingw
@@ -74,7 +74,7 @@
LIBNAME = libpng10
PNGMAJ = 0
MINGDLL = 10
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=libpng$(MINGDLL).dll
@@ -284,6 +284,3 @@
pngpread.o pngpread.pic.o: png.h pngconf.h pngpread.c
pngtest.o pngtest.pic.o: png.h pngconf.h pngtest.c
-
-
-
diff --git a/scripts/makefile.mips b/scripts/makefile.mips
index f1a557d..5bf9cf9 100644
--- a/scripts/makefile.mips
+++ b/scripts/makefile.mips
@@ -76,8 +76,9 @@
pngpread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
+
+pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.msc b/scripts/makefile.msc
index 1cbfd91..89a2c4a 100644
--- a/scripts/makefile.msc
+++ b/scripts/makefile.msc
@@ -1,5 +1,6 @@
# makefile for libpng
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+# Copyright (C) 2006, 2009 Glenn Randers-Pehrson
# For conditions of distribution and use, see copyright notice in png.h
# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
@@ -55,9 +56,6 @@
pngwio$(O): png.h pngconf.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngtest$(O): png.h pngconf.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
pngtrans$(O): png.h pngconf.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
@@ -76,6 +74,9 @@
lib libpng $(OBJS2);
lib libpng $(OBJS3);
+pngtest$(O): png.h pngconf.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
pngtest.exe: pngtest.obj libpng.lib
$(LD) $(LDFLAGS) pngtest.obj,,,libpng.lib ..\zlib\zlib.lib ;
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index 2d83859..893358f 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -2,7 +2,7 @@
# make obj && make depend && make && make test
# make includes && make install
# Copyright (C) 2002 Patrick R.L. Welche
-# Copyright (C) 2007 Glenn Randers-Pehrson
+# Copyright (C) 2007, 2009 Glenn Randers-Pehrson
# For conditions of distribution and use, see copyright notice in png.h
# You should also run makefile.netbsd
@@ -12,9 +12,9 @@
MANDIR= ${LOCALBASE}/man
INCSDIR=${LOCALBASE}/include/libpng10
-LIB= png12
+LIB= png10
SHLIB_MAJOR= 0
-SHLIB_MINOR= 1.0.44
+SHLIB_MINOR= 1.0.45
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
@@ -23,7 +23,8 @@
CPPFLAGS+=-I${.CURDIR}
-# something like this for mmx assembler, but it core dumps for me at the moment
+# We should be able to do something like this instead of the manual
+# uncommenting, but it core dumps for me at the moment:
# .if ${MACHINE_ARCH} == "i386"
# CPPFLAGS+=-DPNG_THREAD_UNSAFE_OK
# MKLINT= no
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index 974022c..04ae59a 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -2,7 +2,7 @@
# make obj && make depend && make && make test
# make includes && make install
# Copyright (C) 2002 Patrick R.L. Welche
-# Copyright (C) 2007 Glenn Randers-Pehrson
+# Copyright (C) 2007, 2009 Glenn Randers-Pehrson
# For conditions of distribution and use, see copyright notice in png.h
# You should also run makefile.ne0bsd
@@ -14,7 +14,7 @@
LIB= png
SHLIB_MAJOR= 3
-SHLIB_MINOR= 1.0.44
+SHLIB_MINOR= 1.0.45
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c
@@ -23,7 +23,8 @@
CPPFLAGS+=-I${.CURDIR}
-# something like this for mmx assembler, but it core dumps for me at the moment
+# We should be able to do something like this instead of the manual
+# uncommenting, but it core dumps for me at the moment:
# .if ${MACHINE_ARCH} == "i386"
# CPPFLAGS+=-DPNG_THREAD_UNSAFE_OK
# MKLINT= no
diff --git a/scripts/makefile.nommx b/scripts/makefile.nommx
index 09b1b5b..cf736f0 100644
--- a/scripts/makefile.nommx
+++ b/scripts/makefile.nommx
@@ -7,7 +7,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@@ -233,20 +233,20 @@
# DO NOT DELETE THIS LINE -- make depend depends on it.
-png.o png.pic.o: png.h pngconf.h
-pngerror.o pngerror.pic.o: png.h pngconf.h
-pngrio.o pngrio.pic.o: png.h pngconf.h
-pngwio.o pngwio.pic.o: png.h pngconf.h
-pngmem.o pngmem.pic.o: png.h pngconf.h
-pngset.o pngset.pic.o: png.h pngconf.h
-pngget.o pngget.pic.o: png.h pngconf.h
-pngread.o pngread.pic.o: png.h pngconf.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h
-pngpread.o pngpread.pic.o: png.h pngconf.h
+png.o png.pic.o: png.h pngconf.h png.c
+pngerror.o pngerror.pic.o: png.h pngconf.h pngerror.c
+pngrio.o pngrio.pic.o: png.h pngconf.h pngrio.c
+pngwio.o pngwio.pic.o: png.h pngconf.h pngwio.c
+pngmem.o pngmem.pic.o: png.h pngconf.h pngmem.c
+pngset.o pngset.pic.o: png.h pngconf.h pngset.c
+pngget.o pngget.pic.o: png.h pngconf.h pngget.c
+pngread.o pngread.pic.o: png.h pngconf.h pngread.c
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngrtran.c
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngrutil.c
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngtrans.c
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngwrite.c
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngwtran.c
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngwutil.c
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpread.c
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pngtest.c
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index 6694ff5..5f7a90c 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -8,7 +8,7 @@
MANDIR= ${PREFIX}/man/cat
SHLIB_MAJOR= 0
-SHLIB_MINOR= 1.0.44
+SHLIB_MINOR= 1.0.45
LIB= png
SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \
@@ -18,7 +18,7 @@
HDRS= png.h pngconf.h
CFLAGS+= -W -Wall
-CPPFLAGS+= -I${.CURDIR} -DPNG_NO_MMX_CODE
+CPPFLAGS+= -I${.CURDIR} -DPNG_NO_MMX_CODE
NOPROFILE= Yes
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index aa5bba4..8ef8458 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -9,7 +9,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index 7db59af..599ac56 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -6,7 +6,7 @@
# Library name:
LIBNAME=libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@@ -212,10 +212,8 @@
./pngtesti pngtest.png
clean:
- $(RM_F) libpng.a pngtest pngtesti pngout.png libpng.pc libpng-config \
- $(LIBSO) $(LIBSOMAJ)* \
- $(OLDSOVER) \
- so_locations
+ $(RM_F) libpng.a pngtest pngtesti pngout.png libpng.pc \
+ so_locations libpng-config $(LIBSO) $(LIBSOMAJ)* $(OLDSOVER)
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
@@ -233,10 +231,10 @@
pngread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
pngpread.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index 7d126d5..35b8c7a 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -6,7 +6,7 @@
# Library name:
LIBNAME=libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@@ -236,10 +236,10 @@
pngread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
pngpread.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.so9 b/scripts/makefile.so9
index e3aff94..64c8471 100644
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -8,7 +8,7 @@
# Library name:
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng10
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index 2395b32..ac7af5e 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -8,7 +8,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@@ -43,8 +43,7 @@
WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
-Wmissing-declarations -Wtraditional -Wcast-align \
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-CFLAGS=-I$(ZLIBINC) -W -Wall -O \
- -DPNG_NO_MMX_CODE; \
+CFLAGS=-I$(ZLIBINC) -W -Wall -O -DPNG_NO_MMX_CODE; \
# $(WARNMORE) -g -DPNG_DEBUG=5
LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
diff --git a/scripts/makefile.solaris-x86 b/scripts/makefile.solaris-x86
index 6abcf68..1f75553 100644
--- a/scripts/makefile.solaris-x86
+++ b/scripts/makefile.solaris-x86
@@ -8,7 +8,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
-PNGMIN = 1.0.44
+PNGMIN = 1.0.45
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
diff --git a/scripts/makefile.std b/scripts/makefile.std
index 9b1925d..de665e6 100644
--- a/scripts/makefile.std
+++ b/scripts/makefile.std
@@ -83,10 +83,10 @@
pngread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
pngpread.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.sunos b/scripts/makefile.sunos
index ff19591..0f0a226 100644
--- a/scripts/makefile.sunos
+++ b/scripts/makefile.sunos
@@ -88,10 +88,10 @@
pngread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
pngpread.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.vcawin32 b/scripts/makefile.vcawin32
index 99f5430..04bdf4c 100644
--- a/scripts/makefile.vcawin32
+++ b/scripts/makefile.vcawin32
@@ -1,17 +1,19 @@
# makefile for libpng
+# Copyright (C) 2006,2009 Glenn Randers-Pehrson
# Copyright (C) 1998 Tim Wegner
# For conditions of distribution and use, see copyright notice in png.h
# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
# To use, do "nmake /f scripts\makefile.vcawin32"
-# -------- Microsoft Visual C++ 5.0 and later, uses assembler code --------
-# If you don't want to use assembler (MMX) code, use makefile.vcwin32 instead.
+# -------- Microsoft Visual C++ 2.0 and later, no assembler code --------
+%12-%# If you don't want to use assembler (MMX) code, use makefile.vcwin32 instead.
# Compiler, linker, librarian, and other tools
CC = cl
LD = link
AR = lib
-CFLAGS = -DPNG_USE_PNGVCRD -nologo -MD -O2 -W3 -I..\zlib
+%12-%CFLAGS = -nologo -DPNG_USE_PNGVCRD -MD -O2 -W3 -I..\zlib
+%14+%CFLAGS = -nologo -MD -O2 -W3 -I..\zlib
LDFLAGS = -nologo
ARFLAGS = -nologo
RM = del
@@ -64,9 +66,6 @@
pngwio$(O): png.h pngconf.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngtest$(O): png.h pngconf.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
pngtrans$(O): png.h pngconf.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
@@ -83,6 +82,9 @@
-$(RM) $@
$(AR) $(ARFLAGS) -out:$@ $(OBJS) $(ERRFILE)
+pngtest$(O): png.h pngconf.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
pngtest.exe: pngtest$(O) libpng.lib
$(LD) $(LDFLAGS) -out:$@ pngtest$(O) libpng.lib ..\zlib\zlib.lib $(ERRFILE)
diff --git a/scripts/makefile.vcwin32 b/scripts/makefile.vcwin32
index fc6ece6..01c83b5 100644
--- a/scripts/makefile.vcwin32
+++ b/scripts/makefile.vcwin32
@@ -1,17 +1,19 @@
# makefile for libpng
# Copyright (C) 1998 Tim Wegner
+# Copyright (C) 2006,2009 Glenn Randers-Pehrson
# For conditions of distribution and use, see copyright notice in png.h
# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
# To use, do "nmake /f scripts\makefile.vcwin32"
# -------- Microsoft Visual C++ 2.0 and later, no assembler code --------
-# If you want to use assembler (MMX) code, use makefile.vcawin32 instead.
+%12-%# If you want to use assembler (MMX) code, use makefile.vcawin32 instead.
# Compiler, linker, librarian, and other tools
CC = cl
LD = link
AR = lib
-CFLAGS = -nologo -DPNG_NO_MMX_CODE -MD -O2 -W3 -I..\zlib
+%12-%CFLAGS = -nologo -DPNG_NO_MMX_CODE -MD -O2 -W3 -I..\zlib
+%14+%CFLAGS = -nologo -MD -O2 -W3 -I..\zlib
LDFLAGS = -nologo
ARFLAGS = -nologo
RM = del
@@ -64,9 +66,6 @@
pngwio$(O): png.h pngconf.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-pngtest$(O): png.h pngconf.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
pngtrans$(O): png.h pngconf.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
@@ -83,6 +82,9 @@
-$(RM) $@
$(AR) $(ARFLAGS) -out:$@ $(OBJS) $(ERRFILE)
+pngtest$(O): png.h pngconf.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
pngtest.exe: pngtest$(O) libpng.lib
$(LD) $(LDFLAGS) -out:$@ pngtest$(O) libpng.lib ..\zlib\zlib.lib $(ERRFILE)
diff --git a/scripts/makevms.com b/scripts/makevms.com
index b9e3895..36d1190 100644
--- a/scripts/makevms.com
+++ b/scripts/makevms.com
@@ -55,8 +55,6 @@
$ dele pngtest.obj;*
$ CALL MAKE png.OBJ "cc ''CCOPT' png" -
png.c png.h pngconf.h
-$ CALL MAKE pngpread.OBJ "cc ''CCOPT' pngpread" -
- pngpread.c png.h pngconf.h
$ CALL MAKE pngset.OBJ "cc ''CCOPT' pngset" -
pngset.c png.h pngconf.h
$ CALL MAKE pngget.OBJ "cc ''CCOPT' pngget" -
@@ -64,7 +62,7 @@
$ CALL MAKE pngread.OBJ "cc ''CCOPT' pngread" -
pngread.c png.h pngconf.h
$ CALL MAKE pngpread.OBJ "cc ''CCOPT' pngpread" -
- pngpread.c png.h pngconf.h
+ pngpread.c png.h pngconf.h
$ CALL MAKE pngrtran.OBJ "cc ''CCOPT' pngrtran" -
pngrtran.c png.h pngconf.h
$ CALL MAKE pngrutil.OBJ "cc ''CCOPT' pngrutil" -
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index 6919285..e312ecf 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
; PNG.LIB module definition file for OS/2
;----------------------------------------
-; Version 1.0.44
+; Version 1.0.45
LIBRARY PNG
DESCRIPTION "PNG image compression library for OS/2"
diff --git a/scripts/pngw32.def b/scripts/pngw32.def
index 3402f73..bdf7674 100644
--- a/scripts/pngw32.def
+++ b/scripts/pngw32.def
@@ -5,7 +5,7 @@
LIBRARY
EXPORTS
-;Version 1.0.44
+;Version 1.0.45
png_build_grayscale_palette @1
png_check_sig @2
png_chunk_error @3
@@ -189,6 +189,7 @@
; Added at version 1.0.12
; For compatibility with 1.0.7-1.0.11
; png_info_init @174
+; png_read_init_3, png_info_init_3, and png_write_init_3 are deprecated.
png_read_init_3 @175
png_write_init_3 @176
png_info_init_3 @177
