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libpng/ANNOUNCE
2009-04-06 16:14:28 -05:00

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Libpng 1.2.19 - August 18, 2007
This is a public release of libpng, intended for use in production codes.
Files available for download:
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
libpng-1.2.19.tar.gz
libpng-1.2.19.tar.bz2
Source files with LF line endings (for Unix/Linux) without the
"configure" script
libpng-1.2.19-no-config.tar.gz
libpng-1.2.19-no-config.tar.bz2
Source files with CRLF line endings (for Windows), without the
"configure" script
lpng1219.zip
lpng1219.tar.bz2
Project files
libpng-1.2.19-project-netware.zip
libpng-1.2.19-project-wince.zip
Other information:
libpng-1.2.19-README.txt
libpng-1.2.19-KNOWNBUGS.txt
libpng-1.2.19-LICENSE.txt
libpng-1.2.19-Y2K-compliance.txt
Changes since the last public release (1.2.18):
version 1.2.19 [August 18, 2007]
Changed "const static" to "static PNG_CONST" everywhere, mostly undoing
change of libpng-1.2.17beta2. Changed other "const" to "PNG_CONST"
Fixed png_do_expand() to only use the appropriate bits of tRNS value.
Fixed png_handle_tRNS() to only use the appropriate bits of tRNS value.
Add some "png_byte" typecasts in png_check_keyword().
Write new_key instead of key in zTXt chunk.
Add png_snprintf() function and use it in place of sprint() for improved
defense against buffer overflows.
Changed handling of some unused parameters, to avoid compiler warnings.
Removed some PNG_CONST in pngwutil.c to avoid compiler warnings.
Added some #ifdef PNG_MMX_CODE_SUPPORTED where needed in pngvcrd.c
Squelched png_squelch_warnings() in pnggccrd.c; Use "__attribute__((used))"
instead.
Removed __MMX__ from test in pngconf.h.
Updated makefile.sgcc and makefile.solaris; added makefile.solaris-x86.
Return 0 from png_get_sPLT() and png_get_unknown_chunks() if png_ptr is NULL;
changed three remaining instances of png_strcpy() to png_strncpy() (David
Hill).
Make test for NULL row_buf at the beginning of png_do_read_transformations
unconditional.
Prefer PNG_USE_PNGVCRD when _MSC_VER is defined in pngconf.h
Revised pnggccrd.c.
Updated contrib/gregbook.
Changed '#include "pnggccrd.c"' to 'include "$srcdir/pnggccrd.c"'
in configure.ac
Revised many of the makefiles, to set -DPNG_NO_MMX_CODE where needed
and to not use -O3 unless -DPNG_NO_MMX_CODE is also set.
Copied optimized C code from pnggccrd.c to pngrutil.c, removed dependency
on pnggccrd.o from many makefiles.
Added sl and dylib to list of extensions be installed by Makefile.am
Fixed testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN in pngrtran.c
Revised pngvcrd.c.
Rebuilt Makefile.in and configure using libtool-1.5.24.
Added "test" target to Makefile.in and Makefile.am
Added info about pngrutil/pnggccrd/pngvcrd to png_get_header_version()
Added PNG_NO_WRITE_FILTER and PNG_NO_WARNING macros.
Added contrib/pngminim to demonstrate building minimal encoder and decoder
Changed "png_free(str)" to "png_free(png_ptr,str)" in pngrutil.c WinCE
code (Yves Piguet). This bug was introduced in libpng-1.2.14.
Updated scripts/CMakeLists.txt
Fixed incorrect stride and number of bytes copied (was 4 instead of
6 bytes) in the cleanup loop of pnggccrd.c and pngvcrd.c for handling
the end of 48-bit interlaced rows (Glenn R-P).
Added png_warning() in pngrutil.c for short iCCP, iTXt, sPLT, or zTXT chunks.
Revised pngtest.c so warnings are displayed regardless of PNG_NO_STDIO.
Disable PNG_MMX_CODE_SUPPORTED when PNG_ASSEMBLER_CODE_SUPPORTED is off.
Added information about disabling the MMX code in libpng documentation.
Removed some "#if 0" blocks.
Made a global struct local in pngvcrd.c to make it thread safe.
Change default to PNG_NO_GLOBAL_ARRAYS for MSVC.
Revise handling of png_strtod in recent versions of WINCE
Issue a png_error() if application attempts to transform a row tht
has not been initialized.
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