-Libpng 1.2.34 - December 18, 2008
+Libpng 1.5.7 - December 15, 2011
This is a public release of libpng, intended for use in production codes.
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
- libpng-1.2.34.tar.gz
- libpng-1.2.34.tar.lzma
- (Get the lzma codec from <http://tukaani.org/lzma>).
- libpng-1.2.34.tar.bz2
-
-Source files with LF line endings (for Unix/Linux) without the
-"configure" script
-
- libpng-1.2.34-no-config.tar.gz
- libpng-1.2.34-no-config.tar.lzma
- libpng-1.2.34-no-config.tar.bz2
+ libpng-1.5.7.tar.xz (LZMA-compressed, recommended)
+ libpng-1.5.7.tar.gz
+ libpng-1.5.7.tar.bz2
Source files with CRLF line endings (for Windows), without the
"configure" script
- lpng1234.zip
- lpng1234.7z
- lpng1234.tar.bz2
-
-Project files
-
- libpng-1.2.34-project-netware.zip
- libpng-1.2.34-project-wince.zip
+ lpng157.7z (LZMA-compressed, recommended)
+ lpng157.zip
Other information:
- libpng-1.2.34-README.txt
- libpng-1.2.34-KNOWNBUGS.txt
- libpng-1.2.34-LICENSE.txt
- libpng-1.2.34-Y2K-compliance.txt
- libpng-1.2.34-[previous version]-diff.txt
-
-Changes since the last public release (1.2.33):
-
-version 1.2.34 [December 18, 2008]
-
-version 1.2.34beta01 [December 18, 2008]
- Revised png_warning() to write its message on standard output by default
- when warning_fn is NULL. This was the behavior prior to libpng-1.2.9.
- Fixed string vs pointer-to-string error in png_check_keyword().
- Added png_check_cHRM_fixed() in png.c and moved checking from pngget.c,
- pngrutil.c, and pngwrite.c, and eliminated floating point cHRM checking.
- Added check for zero-area RGB cHRM triange in png_check_cHRM_fixed().
- In png_check_cHRM_fixed(), ensure white_y is > 0, and removed redundant
- check for all-zero coordinates that is detected by the triangle check.
- Revised png_warning() to write its message on standard output by default
- when warning_fn is NULL.
- Corrected off-by-one error in bKGD validity check in png_write_bKGD()
- and in png_handle_bKGD().
- Merged with png_debug from libpng-1.4.0 to remove newlines.
- Removed redundant check for key==NULL before calling png_check_keyword()
- to ensure that new_key gets initialized and removed extra warning
- (Arvan Pritchard).
- Added PNG_TRANSFORM_STRIP_FILLER_BEFORE and
- PNG_TRANSFORM_STRIP_FILLER_AFTER conditionals and deprecated
- PNG_TRANSFORM_STRIP_FILLER (Jim Barry).
+ libpng-1.5.7-README.txt
+ libpng-1.5.7-LICENSE.txt
+
+Changes since the last public release (1.5.6):
+ Added support for ARM processor (Mans Rullgard)
+ Fixed bug in pngvalid on early allocation failure; fixed type cast in
+ pngmem.c; pngvalid would attempt to call png_error() if the allocation
+ of a png_struct or png_info failed. This would probably have led to a
+ crash. The pngmem.c implementation of png_malloc() included a cast
+ to png_size_t which would fail on large allocations on 16-bit systems.
+ Fix for the preprocessor of the Intel C compiler. The preprocessor
+ splits adjacent @ signs with a space; this changes the concatentation
+ token from @-@-@ to PNG_JOIN; that should work with all compiler
+ preprocessors.
+ Paeth filter speed improvements from work by Siarhei Siamashka. This
+ changes the 'Paeth' reconstruction function to improve the GCC code
+ generation on x86. The changes are only part of the suggested ones;
+ just the changes that definitely improve speed and remain simple.
+ The changes also slightly increase the clarity of the code.
+ Check compression_type parameter in png_get_iCCP and remove spurious
+ casts. The compression_type parameter is always assigned to, so must
+ be non-NULL. The cast of the profile length potentially truncated the
+ value unnecessarily on a 16-bit int system, so the cast of the (byte)
+ compression type to (int) is specified by ANSI-C anyway.
+ Fixed FP division by zero in pngvalid.c; the 'test_pixel' code left
+ the sBIT fields in the test pixel as 0, which resulted in a floating
+ point division by zero which was irrelevant but causes systems where
+ FP exceptions cause a crash. Added code to pngvalid to turn on FP
+ exceptions if the appropriate glibc support is there to ensure this is
+ tested in the future.
+ Added versioning to pnglibconf.h comments.
+ Installed more accurate linear to sRGB conversion tables. The slightly
+ modified tables reduce the number of 16-bit values that
+ convert to an off-by-one 8-bit value. The "makesRGB.c" code that was used
+ to generate the tables is now in a contrib/sRGBtables sub-directory.
+ Added run-time detection of NEON support.
+ Multiple transform bug fixes plus a work-round for double gamma correction.
+ libpng does not support more than one transform that requires linear data
+ at once - if this is tried typically the results is double gamma
+ correction. Since the simplified APIs can need rgb to gray combined with
+ a compose operation it is necessary to do one of these outside the main
+ libpng transform code. This check-in also contains fixes to various bugs
+ in compose and rgb to gray (on palette).
+ Fixes for C++ compilation using g++ When libpng source is compiled
+ using g++. The compiler imposes C++ rules on the C source; thus it
+ is desireable to make the source work with either C or C++ rules
+ without throwing away useful error information. This change adds
+ png_voidcast to allow C semantic (void*) cases or the corresponding
+ C++ static_cast operation, as appropriate.
+ Added --noexecstack to assembler file compilation. GCC does not set
+ this on assembler compilation, even though it does on C compilation.
+ This creates security issues if assembler code is enabled; the
+ work-around is to set it by default in the flags for $(CCAS)
+ Removed "zTXt" from warning in generic chunk decompression function.
+ Validate time settings passed to pngset() and png_convert_to_rfc1123()
+ (Frank Busse).
+ Added MINGW support to CMakeLists.txt
+ Reject invalid compression flag or method when reading the iTXt chunk.
+ Moved pngvalid.c into contrib/libtests
+ Rebuilt Makefile.in, configure, etc., with autoconf-2.68
+ Replaced an "#if" with "#ifdef" in pngrtran.c
+ Revised #if PNG_DO_BC block in png.c (use #ifdef and add #else)
+ Revised pngconf.h to use " __declspec(restrict)" only when MSC_VER >= 1400,
+ as in libpng-1.5.4.
+ Put CRLF line endings in the owatcom project files.
+ Updated CMakeLists.txt to account for the relocation of pngvalid.c
+ Minor fixes to pngvalid.c for gcc 4.6.2 compatibility to remove warnings
+ reported by earlier versions.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
-(subscription required; visit
+(subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement
-to subscribe) or to glennrp at users.sourceforge.net
+to subscribe)
+or to glennrp at users.sourceforge.net
Glenn R-P
projects / wxWidgets.git / blobdiff