ANNOUNCE - third_party/libpng - Git at Google


 Libpng 1.2.41beta18 - November 11, 2009

 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

    libpng-1.2.41beta18.tar.xz (LZMA-compressed, recommended)
    libpng-1.2.41beta18.tar.gz
    libpng-1.2.41beta18.tar.bz2

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

    libpng-1.2.41beta18-no-config.tar.xz (LZMA-compressed, recommended)
    libpng-1.2.41beta18-no-config.tar.gz
    libpng-1.2.41beta18-no-config.tar.bz2

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

    lp1241b18.zip
    lp1241b18.7z
    lp1241b18.tar.bz2

 Project files

    libpng-1.2.41beta18-project-netware.zip
    libpng-1.2.41beta18-project-wince.zip

 Other information:

    libpng-1.2.41beta18-README.txt
    libpng-1.2.41beta18-KNOWNBUGS.txt
    libpng-1.2.41beta18-LICENSE.txt
    libpng-1.2.41beta18-Y2K-compliance.txt
    libpng-1.2.41beta18-[previous version]-diff.txt

 Changes since the last public release (1.2.40):

 version 1.2.41beta01 [September 25, 2009]
   Moved redundant IHDR checking into new png_check_IHDR() in png.c
     and report all errors found in the IHDR data.
   Eliminated useless call to png_check_cHRM() from pngset.c
   Expanded TAB characters in pngrtran.c

 version 1.2.41beta02 [September 30, 2009]
   Revised png_check_IHDR().

 version 1.2.41beta03 [October 1, 2009]
   Revised png_check_IHDR() again, to check info_ptr members instead of
     the contents of the returned parameters.

 version 1.2.41beta04 [October 7, 2009]
   Added "xcode" project similar one already in libpng-1.4.0beta (Alam Arias).
   Ported some cosmetic changes from libpng-1.4.0beta86.
   Eliminated a shadowed declaration of "pp" in png_handle_sPLT().

 version 1.2.41beta05 [October 17, 2009]
   Revised pngconf.h to make it easier to enable iTXt support.  From libpng
     version 1.2.9 through 1.2.40, defining PNG_iTXt_SUPPORTED did not work
     as expected.
   Ported some cosmetic changes from libpng-1.4.0beta87, changing
     many "#if defined(x)" to "#ifdef x".

 version 1.2.41beta06 [October 18, 2009]
   Restored PNG_USE_LOCAL_ARRAYS code in pngread.c that was inadvertently
     deleted in libpng-1.2.41beta05.
   Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
     as in libpng-1.4.0beta78 and later.

 version 1.2.41beta07 [October 21, 2009]
   Ported some cosmetic changes from libpng-1.4.0rc01, changing
     many "#if defined(x)" to "#ifdef x" in png.h and pngconf.h.

 version 1.2.41beta08 [October 30, 2009]
   Ported from libpng-1.4.0rc01: png_calloc(), png_get_io_chunk_name(),
     png_get_io_state(), png_set_user_cache_max(), png_get_user_cache_max(),
     png_set_premultiply_alpha, and png_do_read_premultiply_alpha().
   Relocated png_do_chop() ahead of building gamma tables in pngrtran.c
     This avoids building 16-bit gamma tables unnecessarily.

 version 1.2.41beta09 [November 1, 2009]
   Removed a harmless extra png_set_invert_alpha() from pngwrite.c
   More bugfixes and improvements to CMakeLists.txt (Philip Lowman)
   Moved CMakeLists.txt from scripts into the main libpng directory.
   Apply png_user_chunk_cache_max within png_decompress_chunk().
   Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate.

 version 1.2.41beta10 [November 1, 2009]
   Enabled iTXt support by default. To ensure binary compatibility with
     previous versions, the "lang" and "lang_key" members will be assumed
     to be omitted from previous versions unless the current libpng
     version was built with PNG_iTXt_SUPPORTED (which is otherwise no
     longer necessary to gain iTXt support), as a signal that the user has
     been building previous versions with PNG_iTXt_SUPPORTED as well.

 version 1.2.41beta11 [November 2, 2009]
   Store user's user_png_ver in new png_ptr->user_png_ver element.
   Revised iTXt support. To ensure binary compatibility with
     previous versions, the "lang" and "lang_key" members will be assumed
     to be omitted from versions prior to 1.2.41beta11 whenever there is a
     library mismatch.

 version 1.2.41beta12 [November 2, 2009]
   Free png_ptr->user_png_ver when destroying png_ptr.

 version 1.2.41beta13 [November 3, 2009]
   Updated scripts/pngw32.def and projects/wince/png32ce.def
   Copied projects/wince/png32ce.def to the scripts directory.
   Added scripts/makefile.wce
   Patched ltmain.sh for wince support.
   Added PNG_CONVERT_tIME_SUPPORTED macro.

 version 1.2.41beta14 [November 8, 2009]
   versions 1.2.41beta05 through 1.2.41beta13 were abandoned.
   Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
   Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
   Reverted iTXt compatibility stuff from 1.2.41beta05, 1.2.41beta11, and
     1.2.41beta12.
   Reverted IOSTATE feature, user_cache_max, and premultiply_alpha features
     from 1.2.41beta08.
   Retained png_calloc() from 1.2.41beta08 but as a non-exported function,
     and removed reference to png_calloc from scripts/*.def

 version 1.2.41beta15 [November 8, 2009]
   Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
     PNG_ALLOCATED macros to detect deprecated direct access to the
     png_struct or info_struct members and other deprecated usage in
     applications (John Bowler).
   Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS,
     to prevent warnings about direct access to png structs by libpng
     functions while building libpng.  They need to be tested, especially
     those using compilers other than gcc.
   Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG".

 version 1.2.41beta16 [November 9, 2009]
   Removed three direct references to read_info_ptr members in pngtest.c
     that were detected by the new PNG_DEPSTRUCT macro.
   Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.

 version 1.2.41beta17 [November 10, 2009]
   Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
   Marked deprecated function prototypes with PNG_DEPRECATED.
   Marked memory allocation function prototypes with PNG_ALLOCATED.
   Changed png_check_sig() to !png_sig_cmp() in contrib programs.
   Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
   Added "-DPNG_CONFIGURE_LIBPNG" to the contrib/pngminum makefiles.

 version 1.2.41rc01 [November 11, 2009]
   Renamed scripts/makefile.wce to scripts/makefile.cegcc

 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 1.2.41beta18 - November 11, 2009

	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

	libpng-1.2.41beta18.tar.xz (LZMA-compressed, recommended)
	libpng-1.2.41beta18.tar.gz
	libpng-1.2.41beta18.tar.bz2

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

	libpng-1.2.41beta18-no-config.tar.xz (LZMA-compressed, recommended)
	libpng-1.2.41beta18-no-config.tar.gz
	libpng-1.2.41beta18-no-config.tar.bz2

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

	lp1241b18.zip
	lp1241b18.7z
	lp1241b18.tar.bz2

	Project files

	libpng-1.2.41beta18-project-netware.zip
	libpng-1.2.41beta18-project-wince.zip

	Other information:

	libpng-1.2.41beta18-README.txt
	libpng-1.2.41beta18-KNOWNBUGS.txt
	libpng-1.2.41beta18-LICENSE.txt
	libpng-1.2.41beta18-Y2K-compliance.txt
	libpng-1.2.41beta18-[previous version]-diff.txt

	Changes since the last public release (1.2.40):

	version 1.2.41beta01 [September 25, 2009]
	Moved redundant IHDR checking into new png_check_IHDR() in png.c
	and report all errors found in the IHDR data.
	Eliminated useless call to png_check_cHRM() from pngset.c
	Expanded TAB characters in pngrtran.c

	version 1.2.41beta02 [September 30, 2009]
	Revised png_check_IHDR().

	version 1.2.41beta03 [October 1, 2009]
	Revised png_check_IHDR() again, to check info_ptr members instead of
	the contents of the returned parameters.

	version 1.2.41beta04 [October 7, 2009]
	Added "xcode" project similar one already in libpng-1.4.0beta (Alam Arias).
	Ported some cosmetic changes from libpng-1.4.0beta86.
	Eliminated a shadowed declaration of "pp" in png_handle_sPLT().

	version 1.2.41beta05 [October 17, 2009]
	Revised pngconf.h to make it easier to enable iTXt support. From libpng
	version 1.2.9 through 1.2.40, defining PNG_iTXt_SUPPORTED did not work
	as expected.
	Ported some cosmetic changes from libpng-1.4.0beta87, changing
	many "#if defined(x)" to "#ifdef x".

	version 1.2.41beta06 [October 18, 2009]
	Restored PNG_USE_LOCAL_ARRAYS code in pngread.c that was inadvertently
	deleted in libpng-1.2.41beta05.
	Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
	as in libpng-1.4.0beta78 and later.

	version 1.2.41beta07 [October 21, 2009]
	Ported some cosmetic changes from libpng-1.4.0rc01, changing
	many "#if defined(x)" to "#ifdef x" in png.h and pngconf.h.

	version 1.2.41beta08 [October 30, 2009]
	Ported from libpng-1.4.0rc01: png_calloc(), png_get_io_chunk_name(),
	png_get_io_state(), png_set_user_cache_max(), png_get_user_cache_max(),
	png_set_premultiply_alpha, and png_do_read_premultiply_alpha().
	Relocated png_do_chop() ahead of building gamma tables in pngrtran.c
	This avoids building 16-bit gamma tables unnecessarily.

	version 1.2.41beta09 [November 1, 2009]
	Removed a harmless extra png_set_invert_alpha() from pngwrite.c
	More bugfixes and improvements to CMakeLists.txt (Philip Lowman)
	Moved CMakeLists.txt from scripts into the main libpng directory.
	Apply png_user_chunk_cache_max within png_decompress_chunk().
	Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate.

	version 1.2.41beta10 [November 1, 2009]
	Enabled iTXt support by default. To ensure binary compatibility with
	previous versions, the "lang" and "lang_key" members will be assumed
	to be omitted from previous versions unless the current libpng
	version was built with PNG_iTXt_SUPPORTED (which is otherwise no
	longer necessary to gain iTXt support), as a signal that the user has
	been building previous versions with PNG_iTXt_SUPPORTED as well.

	version 1.2.41beta11 [November 2, 2009]
	Store user's user_png_ver in new png_ptr->user_png_ver element.
	Revised iTXt support. To ensure binary compatibility with
	previous versions, the "lang" and "lang_key" members will be assumed
	to be omitted from versions prior to 1.2.41beta11 whenever there is a
	library mismatch.

	version 1.2.41beta12 [November 2, 2009]
	Free png_ptr->user_png_ver when destroying png_ptr.

	version 1.2.41beta13 [November 3, 2009]
	Updated scripts/pngw32.def and projects/wince/png32ce.def
	Copied projects/wince/png32ce.def to the scripts directory.
	Added scripts/makefile.wce
	Patched ltmain.sh for wince support.
	Added PNG_CONVERT_tIME_SUPPORTED macro.

	version 1.2.41beta14 [November 8, 2009]
	versions 1.2.41beta05 through 1.2.41beta13 were abandoned.
	Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
	Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
	Reverted iTXt compatibility stuff from 1.2.41beta05, 1.2.41beta11, and
	1.2.41beta12.
	Reverted IOSTATE feature, user_cache_max, and premultiply_alpha features
	from 1.2.41beta08.
	Retained png_calloc() from 1.2.41beta08 but as a non-exported function,
	and removed reference to png_calloc from scripts/*.def

	version 1.2.41beta15 [November 8, 2009]
	Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
	PNG_ALLOCATED macros to detect deprecated direct access to the
	png_struct or info_struct members and other deprecated usage in
	applications (John Bowler).
	Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS,
	to prevent warnings about direct access to png structs by libpng
	functions while building libpng. They need to be tested, especially
	those using compilers other than gcc.
	Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG".

	version 1.2.41beta16 [November 9, 2009]
	Removed three direct references to read_info_ptr members in pngtest.c
	that were detected by the new PNG_DEPSTRUCT macro.
	Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.

	version 1.2.41beta17 [November 10, 2009]
	Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
	Marked deprecated function prototypes with PNG_DEPRECATED.
	Marked memory allocation function prototypes with PNG_ALLOCATED.
	Changed png_check_sig() to !png_sig_cmp() in contrib programs.
	Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
	Added "-DPNG_CONFIGURE_LIBPNG" to the contrib/pngminum makefiles.

	version 1.2.41rc01 [November 11, 2009]
	Renamed scripts/makefile.wce to scripts/makefile.cegcc

	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