ANNOUNCE - third_party/libpng - Git at Google


 Libpng 1.4.0beta11 - August 19, 2006

 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.

 Files available for download:

 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script

    1.4.0beta11.tar.gz
    1.4.0beta11.tar.bz2

 Source files with LF line endings (for Unix/Linux) without the
 "configure" script

    1.4.0beta11-no-config.tar.gz
    1.4.0beta11-no-config.tar.bz2

 Source files with CRLF line endings (for Windows), without the
 "configure" script

    lp140b11.zip
    lp140b11.tar.bz2

 Other information:

    1.4.0beta11-README.txt
    1.4.0beta11-KNOWNBUGS.txt
    1.4.0beta11-LICENSE.txt
    1.4.0beta11-Y2K-compliance.txt

 Changes since the last public release (1.2.10):

 version 1.2.10beta1 [April 15, 2006]
   Renamed "config.h" to "png_conf.h" and revised Makefile.am to add
     -DPNG_BUILDING_LIBPNG to compile directive, and modified pngconf.h
     to include png_conf.h only when PNG_BUILDING_LIBPNG is defined.

 version 1.2.10beta2 [April 15, 2006]
   Manually updated Makefile.in and configure.  Changed png_conf.h.in
     back to config.h.

 version 1.2.10beta3 [April 15, 2006]
   Change png_conf.h back to config.h in pngconf.h.

 version 1.2.10beta4 [April 16, 2006]
   Change PNG_BUILDING_LIBPNG to PNG_CONFIGURE_LIBPNG in config/Makefile*.

 version 1.2.10beta5 [April 16, 2006]
   Added a configure check for compiling assembler code in pnggccrd.c

 version 1.2.10beta6 [April 17, 2006]
   Revised the configure check for pnggccrd.c
   Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@
   Added @LIBPNG_DEFINES@ to arguments when building libpng.sym

 version 1.2.10beta7 [April 18, 2006]
   Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles.

 version 1.2.10rc1 [April 19, 2006]
   Ensure pngconf.h doesn't define both PNG_USE_PNGGCCRD and PNG_USE_PNGVCRD
   Fixed "LN_FS" typo in makefile.sco and makefile.solaris.

 version 1.2.10rc2 [April 19, 2006]
   Added a backslash between -DPNG_CONFIGURE_LIBPNG and -DPNG_NO_ASSEMBLER_CODE
     in configure.ac
   Made the configure warning about versioned symbols less arrogant.

 version 1.2.10rc3 [April 20, 2006]
   Added a note in libpng.txt that png_set_sig_bytes(8) can be used when
     writing an embedded PNG without the 8-byte signature.

 version 1.4.0beta1 [April 20, 2006]
   Enabled iTXt support (changes png_struct, thus requires so-number change).
   Cleaned up PNG_ASSEMBLER_CODE_SUPPORTED vs PNG_MMX_CODE_SUPPORTED
   Eliminated PNG_1_0_X and PNG_1_2_X macros.
   Removed deprecated functions png_read_init, png_write_init, png_info_init,
     png_permit_empty_plte, png_set_gray_1_2_4_to_8, and removed the
     deprecated macro PNG_MAX_UINT.
   Moved "PNG_INTERNAL" parts of png.h and pngconf.h into pngintrn.h
   Removed many WIN32_WCE #ifdefs (Cosmin).
   Reduced dependency on C-runtime library when on Windows (Simon-Pierre)
   Replaced sprintf() with png_sprintf() (Simon-Pierre)

 version 1.4.0beta2 [April 20, 2006]
   Revised makefiles to avoid making links to libpng.so.*
   Moved some leftover MMX-related defines from pngconf.h to pngintrn.h
   Updated scripts/pngos2.def, pngw32.def, and projects/wince/png32ce.def
   Updated scripts/pngw32.def to comment out MMX functions.

 version 1.2.11beta1 [May 31, 2006]
   scripts/libpng.pc.in contained "configure" style version info and would
     not work with makefiles.
   The shared-library makefiles were linking to libpng.so.0 instead of
     libpng.so.3 compatibility as the library.

 version 1.4.0beta3 [May 10, 2006]
   Updated scripts/pngw32.def to comment out MMX functions.
   Added PNG_NO_GET_INT_32 and PNG_NO_SAVE_INT_32 macros.
   Revised pngconf.h and added pngconf.h.in so makefiles and configure can
     pass defines to libpng and applications.

 version 1.4.0beta4 [May 11, 2006]
   Revised configure.ac, Makefile.am, and many of the makefiles to write
     their defines in pngconf.h.

 version 1.4.0beta5 [May 15, 2006]
   Added a missing semicolon in Makefile.am and Makefile.in
   Deleted extraneous square brackets from configure.ac

 version 1.2.11beta2 [June 2, 2006]
   Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
     buffer overflow.
   Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb))

 version 1.4.0beta6 [June 2, 2006]
   Changed sonum from 0 to 1.
   Removed unused prototype for png_check_sig() from png.h

 version 1.2.11beta3 [June 5, 2006]
   Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin).
   Removed the accidental leftover Makefile.in~ (Cosmin).
   Avoided potential buffer overflow and optimized buffer in
     png_write_sCAL(), png_write_sCAL_s() (Cosmin).
   Removed the include directories and libraries from CFLAGS and LDFLAGS
     in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin).

 version 1.2.11beta4 [June 6, 2006]
   Allow zero-length IDAT chunks after the entire zlib datastream, but not
     after another intervening chunk type.

 version 1.2.11rc2 [June 14, 2006]
   Added prototypes for PNG_INCH_CONVERSIONS functions to png.h
   Revised INSTALL and autogen.sh
   Fixed typo in several makefiles (-W1 should be -Wl)

 version 1.2.11rc3 [June 15, 2006]
   Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
     reading out of bounds.

 version 1.4.0beta7 [June 16, 2006]
   Exported png_write_sig (Cosmin).
   Optimized buffer in png_handle_cHRM() (Cosmin).
   Set pHYs = 2835 x 2835 pixels per meter, and added
     sCAL = 0.352778e-3 x 0.352778e-3 meters, in pngtest.png (Cosmin).
   Added png_set_benign_errors(), png_benign_error(), png_chunk_benign_error().
   Added typedef for png_int_32 and png_uint_32 on 64-bit systems.

 version 1.4.0beta8 [June 21, 2006]
   Added demonstration of user chunk support in pngtest.c, to support the
     public sTER chunk and a private vpAg chunk.

 version 1.4.0beta9 [July 3, 2006]
   Removed ordinals from scripts/pngw32.def and removed png_info_int and
     png_set_gray_1_2_4_to_8 entries.
   Inline call of png_get_uint_32() in png_get_uint_31().
   Use png_get_uint_31() to get vpAg width and height in pngtest.c
   Removed WINCE and Netware projects.
   Removed standalone Y2KINFO file.

 version 1.4.0beta10 [July 12, 2006]
   Added "all: pngconf.h.in pngconf.h" target to Makefile.am

 version 1.4.0beta11 [August 19, 2006]
   Removed AC_FUNC_MALLOC from configure.ac.
   Added a warning when writing iCCP profile with mismatched profile length.
   Patched pnggccrd.c to assemble on x86_64 platforms.
   Moved chunk header reading into a separate function png_read_chunk_header()
     in pngrutil.c.  The chunk header (len+sig) is now serialized in a single
     operation (Cosmin).
   Implemented support for I/O states. Added png_ptr member io_state, and
     functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
     (Cosmin).
   Added png_get_io_chunk_name and png_get_io_state to scripts/*.def (Cosmin).
   Renamed scripts/pngw32.* to scripts/pngwin.* (Cosmin).
   Removed the include directories and libraries from CFLAGS and LDFLAGS
     in scripts/makefile.gcc (Cosmin).
   Used png_save_uint_32() to set vpAg width and height in pngtest.c (Cosmin).
   Cast to proper type when getting/setting vpAg units in pngtest.c (Cosmin).
   Added pngintrn.h to the Visual C++ projects (Cosmin).
   Removed scripts/list (Cosmin).
   Updated copyright year in scripts/pngwin.def (Cosmin).
   Removed PNG_TYPECAST_NULL and used standard NULL consistently (Cosmin).
   Disallowed the user to redefine png_size_t, and enforced a consistent use
     of png_size_t across libpng (Cosmin).
   Changed the type of png_ptr->rowbytes, PNG_ROWBYTES() and friends
     to png_size_t (Cosmin).
   Removed png_convert_size() and replaced png_sizeof with sizeof (Cosmin).
   Removed some unnecessary type casts (Cosmin).
   Changed prototype of png_get_compression_buffer_size() and
     png_set_compression_buffer_size() to work with png_size_t instead of
     png_uint_32 (Cosmin).
   Removed png_memcpy_check() and png_memset_check() (Cosmin).
   Fixed a typo (png_byte --> png_bytep) in libpng.3 and libpng.txt (Cosmin).
   Clarified that png_zalloc() does not clear the allocated memory,
     and png_zalloc() and png_zfree() cannot be PNGAPI (Cosmin).
   Renamed png_mem_size_t to png_alloc_size_t, fixed its definition in
     pngconf.h, and used it in all memory allocation functions (Cosmin).
   Renamed pngintrn.h to pngpriv.h, added a comment at the top of the file
     mentioning that the symbols declared in that file are private, and
     updated the scripts and the Visual C++ projects accordingly (Cosmin).
   Removed circular references between pngconf.h and pngconf.h.in in
     scripts/makefile.vc*win32 (Cosmin).
   Removing trailing '.' from the warning and error messages (Cosmin).
   Added pngdefs.h that is built by makefile or configure, instead of
     pngconf.h.in (Glenn).

 version 1.4.0betaN [future]
   Build shared libraries with -lz and sometimes -lm.

 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
 to subscribe) or to glennrp at users.sourceforge.net

 Glenn R-P

	Libpng 1.4.0beta11 - August 19, 2006

	This is not intended to be a public release. It will be replaced
	within a few weeks by a public version or by another test version.

	Files available for download:

	Source files with LF line endings (for Unix/Linux) and with a
	"configure" script

	1.4.0beta11.tar.gz
	1.4.0beta11.tar.bz2

	Source files with LF line endings (for Unix/Linux) without the
	"configure" script

	1.4.0beta11-no-config.tar.gz
	1.4.0beta11-no-config.tar.bz2

	Source files with CRLF line endings (for Windows), without the
	"configure" script

	lp140b11.zip
	lp140b11.tar.bz2

	Other information:

	1.4.0beta11-README.txt
	1.4.0beta11-KNOWNBUGS.txt
	1.4.0beta11-LICENSE.txt
	1.4.0beta11-Y2K-compliance.txt

	Changes since the last public release (1.2.10):

	version 1.2.10beta1 [April 15, 2006]
	Renamed "config.h" to "png_conf.h" and revised Makefile.am to add
	-DPNG_BUILDING_LIBPNG to compile directive, and modified pngconf.h
	to include png_conf.h only when PNG_BUILDING_LIBPNG is defined.

	version 1.2.10beta2 [April 15, 2006]
	Manually updated Makefile.in and configure. Changed png_conf.h.in
	back to config.h.

	version 1.2.10beta3 [April 15, 2006]
	Change png_conf.h back to config.h in pngconf.h.

	version 1.2.10beta4 [April 16, 2006]
	Change PNG_BUILDING_LIBPNG to PNG_CONFIGURE_LIBPNG in config/Makefile*.

	version 1.2.10beta5 [April 16, 2006]
	Added a configure check for compiling assembler code in pnggccrd.c

	version 1.2.10beta6 [April 17, 2006]
	Revised the configure check for pnggccrd.c
	Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@
	Added @LIBPNG_DEFINES@ to arguments when building libpng.sym

	version 1.2.10beta7 [April 18, 2006]
	Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles.

	version 1.2.10rc1 [April 19, 2006]
	Ensure pngconf.h doesn't define both PNG_USE_PNGGCCRD and PNG_USE_PNGVCRD
	Fixed "LN_FS" typo in makefile.sco and makefile.solaris.

	version 1.2.10rc2 [April 19, 2006]
	Added a backslash between -DPNG_CONFIGURE_LIBPNG and -DPNG_NO_ASSEMBLER_CODE
	in configure.ac
	Made the configure warning about versioned symbols less arrogant.

	version 1.2.10rc3 [April 20, 2006]
	Added a note in libpng.txt that png_set_sig_bytes(8) can be used when
	writing an embedded PNG without the 8-byte signature.

	version 1.4.0beta1 [April 20, 2006]
	Enabled iTXt support (changes png_struct, thus requires so-number change).
	Cleaned up PNG_ASSEMBLER_CODE_SUPPORTED vs PNG_MMX_CODE_SUPPORTED
	Eliminated PNG_1_0_X and PNG_1_2_X macros.
	Removed deprecated functions png_read_init, png_write_init, png_info_init,
	png_permit_empty_plte, png_set_gray_1_2_4_to_8, and removed the
	deprecated macro PNG_MAX_UINT.
	Moved "PNG_INTERNAL" parts of png.h and pngconf.h into pngintrn.h
	Removed many WIN32_WCE #ifdefs (Cosmin).
	Reduced dependency on C-runtime library when on Windows (Simon-Pierre)
	Replaced sprintf() with png_sprintf() (Simon-Pierre)

	version 1.4.0beta2 [April 20, 2006]
	Revised makefiles to avoid making links to libpng.so.*
	Moved some leftover MMX-related defines from pngconf.h to pngintrn.h
	Updated scripts/pngos2.def, pngw32.def, and projects/wince/png32ce.def
	Updated scripts/pngw32.def to comment out MMX functions.

	version 1.2.11beta1 [May 31, 2006]
	scripts/libpng.pc.in contained "configure" style version info and would
	not work with makefiles.
	The shared-library makefiles were linking to libpng.so.0 instead of
	libpng.so.3 compatibility as the library.

	version 1.4.0beta3 [May 10, 2006]
	Updated scripts/pngw32.def to comment out MMX functions.
	Added PNG_NO_GET_INT_32 and PNG_NO_SAVE_INT_32 macros.
	Revised pngconf.h and added pngconf.h.in so makefiles and configure can
	pass defines to libpng and applications.

	version 1.4.0beta4 [May 11, 2006]
	Revised configure.ac, Makefile.am, and many of the makefiles to write
	their defines in pngconf.h.

	version 1.4.0beta5 [May 15, 2006]
	Added a missing semicolon in Makefile.am and Makefile.in
	Deleted extraneous square brackets from configure.ac

	version 1.2.11beta2 [June 2, 2006]
	Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
	buffer overflow.
	Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb))

	version 1.4.0beta6 [June 2, 2006]
	Changed sonum from 0 to 1.
	Removed unused prototype for png_check_sig() from png.h

	version 1.2.11beta3 [June 5, 2006]
	Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin).
	Removed the accidental leftover Makefile.in~ (Cosmin).
	Avoided potential buffer overflow and optimized buffer in
	png_write_sCAL(), png_write_sCAL_s() (Cosmin).
	Removed the include directories and libraries from CFLAGS and LDFLAGS
	in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin).

	version 1.2.11beta4 [June 6, 2006]
	Allow zero-length IDAT chunks after the entire zlib datastream, but not
	after another intervening chunk type.

	version 1.2.11rc2 [June 14, 2006]
	Added prototypes for PNG_INCH_CONVERSIONS functions to png.h
	Revised INSTALL and autogen.sh
	Fixed typo in several makefiles (-W1 should be -Wl)

	version 1.2.11rc3 [June 15, 2006]
	Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
	reading out of bounds.

	version 1.4.0beta7 [June 16, 2006]
	Exported png_write_sig (Cosmin).
	Optimized buffer in png_handle_cHRM() (Cosmin).
	Set pHYs = 2835 x 2835 pixels per meter, and added
	sCAL = 0.352778e-3 x 0.352778e-3 meters, in pngtest.png (Cosmin).
	Added png_set_benign_errors(), png_benign_error(), png_chunk_benign_error().
	Added typedef for png_int_32 and png_uint_32 on 64-bit systems.

	version 1.4.0beta8 [June 21, 2006]
	Added demonstration of user chunk support in pngtest.c, to support the
	public sTER chunk and a private vpAg chunk.

	version 1.4.0beta9 [July 3, 2006]
	Removed ordinals from scripts/pngw32.def and removed png_info_int and
	png_set_gray_1_2_4_to_8 entries.
	Inline call of png_get_uint_32() in png_get_uint_31().
	Use png_get_uint_31() to get vpAg width and height in pngtest.c
	Removed WINCE and Netware projects.
	Removed standalone Y2KINFO file.

	version 1.4.0beta10 [July 12, 2006]
	Added "all: pngconf.h.in pngconf.h" target to Makefile.am

	version 1.4.0beta11 [August 19, 2006]
	Removed AC_FUNC_MALLOC from configure.ac.
	Added a warning when writing iCCP profile with mismatched profile length.
	Patched pnggccrd.c to assemble on x86_64 platforms.
	Moved chunk header reading into a separate function png_read_chunk_header()
	in pngrutil.c. The chunk header (len+sig) is now serialized in a single
	operation (Cosmin).
	Implemented support for I/O states. Added png_ptr member io_state, and
	functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
	(Cosmin).
	Added png_get_io_chunk_name and png_get_io_state to scripts/*.def (Cosmin).
	Renamed scripts/pngw32.* to scripts/pngwin.* (Cosmin).
	Removed the include directories and libraries from CFLAGS and LDFLAGS
	in scripts/makefile.gcc (Cosmin).
	Used png_save_uint_32() to set vpAg width and height in pngtest.c (Cosmin).
	Cast to proper type when getting/setting vpAg units in pngtest.c (Cosmin).
	Added pngintrn.h to the Visual C++ projects (Cosmin).
	Removed scripts/list (Cosmin).
	Updated copyright year in scripts/pngwin.def (Cosmin).
	Removed PNG_TYPECAST_NULL and used standard NULL consistently (Cosmin).
	Disallowed the user to redefine png_size_t, and enforced a consistent use
	of png_size_t across libpng (Cosmin).
	Changed the type of png_ptr->rowbytes, PNG_ROWBYTES() and friends
	to png_size_t (Cosmin).
	Removed png_convert_size() and replaced png_sizeof with sizeof (Cosmin).
	Removed some unnecessary type casts (Cosmin).
	Changed prototype of png_get_compression_buffer_size() and
	png_set_compression_buffer_size() to work with png_size_t instead of
	png_uint_32 (Cosmin).
	Removed png_memcpy_check() and png_memset_check() (Cosmin).
	Fixed a typo (png_byte --> png_bytep) in libpng.3 and libpng.txt (Cosmin).
	Clarified that png_zalloc() does not clear the allocated memory,
	and png_zalloc() and png_zfree() cannot be PNGAPI (Cosmin).
	Renamed png_mem_size_t to png_alloc_size_t, fixed its definition in
	pngconf.h, and used it in all memory allocation functions (Cosmin).
	Renamed pngintrn.h to pngpriv.h, added a comment at the top of the file
	mentioning that the symbols declared in that file are private, and
	updated the scripts and the Visual C++ projects accordingly (Cosmin).
	Removed circular references between pngconf.h and pngconf.h.in in
	scripts/makefile.vc*win32 (Cosmin).
	Removing trailing '.' from the warning and error messages (Cosmin).
	Added pngdefs.h that is built by makefile or configure, instead of
	pngconf.h.in (Glenn).

	version 1.4.0betaN [future]
	Build shared libraries with -lz and sometimes -lm.

	Send comments/corrections/commendations to png-mng-implement at lists.sf.net
	(subscription required; visit
	https://lists.sourceforge.net/lists/listinfo/png-mng-implement
	to subscribe) or to glennrp at users.sourceforge.net

	Glenn R-P