116 lines
5.0 KiB
Plaintext
116 lines
5.0 KiB
Plaintext
Libpng 1.6.22rc02 - May 16, 2016
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This is not intended to be a public release. It will be replaced
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within a few weeks by a public version or by another test version.
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Files available for download:
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Source files with LF line endings (for Unix/Linux) and with a
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"configure" script
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1.6.22rc02.tar.xz (LZMA-compressed, recommended)
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1.6.22rc02.tar.gz
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Source files with CRLF line endings (for Windows), without the
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"configure" script
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lp1622r02.7z (LZMA-compressed, recommended)
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lp1622r02.zip
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Other information:
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1.6.22rc02-README.txt
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1.6.22rc02-LICENSE.txt
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libpng-1.6.22rc02-*.asc (armored detached GPG signatures)
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Changes since the last public release (1.6.21):
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Version 1.6.22beta01 [January 23, 2016]
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Changed PNG_USE_MKSTEMP to __COVERITY__ to select alternate
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"tmpfile()" implementation in contrib/libtests/pngstest.c
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Fixed NO_STDIO build of pngunknown.c to skip calling png_init_io()
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if there is no stdio.h support.
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Added a png_image_write_to_memory() API and a number of assist macros
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to allow an application that uses the simplified API write to bypass
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stdio and write directly to memory.
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Added some warnings (png.h) and some check code to detect *possible*
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overflow in the ROW_STRIDE and simplified image SIZE macros. This
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disallows image width/height/format that *might* overflow. This is
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a quiet API change that limits in-memory image size (uncompressed) to
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less than 4GByte and image row size (stride) to less than 2GByte.
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Revised workaround for false-positive Coverity issue in pngvalid.c.
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Version 1.6.22beta02 [February 8, 2016]
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Only use exit(77) in configure builds.
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Corrected error in PNG_IMAGE_PNG_SIZE_MAX. This new macro underreported
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the palette size because it failed to take into account that the memory
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palette has to be expanded to full RGB when it is written to PNG.
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Updated CMakeLists.txt, added supporting scripts/gen*.cmake.in
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and test.cmake.in (Roger Leigh).
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Relaxed limit checks on gamma values in pngrtran.c. As suggested in
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the comments gamma values outside the range currently permitted
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by png_set_alpha_mode are useful for HDR data encoding. These values
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are already permitted by png_set_gamma so it is reasonable caution to
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extend the png_set_alpha_mode range as HDR imaging systems are starting
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to emerge.
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Version 1.6.22beta03 [March 9, 2016]
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Added a common-law trademark notice and export control information
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to the LICENSE file, png.h, and the man page.
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Restored "& 0xff" in png_save_uint_16() and png_save_uint_32() that
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were accidentally removed from libpng-1.6.17.
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Changed PNG_INFO_cHNK and PNG_FREE_cHNK from 0xnnnn to 0xnnnnU in png.h
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(Robert C. Seacord).
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Removed dubious "#if INT_MAX" test from png.h that was added to
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libpng-1.6.19beta02 (John Bowler).
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Add ${INCLUDES} in scripts/genout.cmake.in (Bug report by Nixon Kwok).
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Updated LICENSE to say files in the contrib directory are not
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necessarily under the libpng license, and that some makefiles have
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other copyright owners.
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Added INTEL-SSE2 support (Mike Klein and Matt Sarett, Google, Inc.).
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Made contrib/libtests/timepng more robust. The code no longer gives
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up/fails on invalid PNG data, it just skips it (with error messages).
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The code no longer fails on PNG files with data beyond IEND. Options
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exist to use png_read_png (reading the whole image, not by row) and, in
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that case, to apply any of the supported transforms. This makes for
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more realistic testing; the decoded data actually gets used in a
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meaningful fashion (John Bowler).
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Fixed some misleading indentation (Krishnaraj Bhat).
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Version 1.6.22beta04 [April 5, 2016]
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Force GCC compilation to C89 if needed (Dagobert Michelsen).
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SSE filter speed improvements for bpp=3:
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memcpy-free implementations of load3() / store3().
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call load3() only when needed at the end of a scanline.
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Version 1.6.22beta05 [April 27, 2016]
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Added PNG_FAST_FILTERS macro (defined as
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PNG_FILTER_NONE|PNG_FILTER_SUB|PNG_FILTER_UP).
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Various fixes for contrib/libtests/timepng.c
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Moved INTEL-SSE code from pngpriv.h into contrib/intel/intel_sse.patch.
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Fixed typo (missing underscore) in #define PNG_READ_16_TO_8_SUPPORTED
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(Bug report by Y.Ohashik).
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Version 1.6.22beta06 [May 5, 2016]
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Rebased contrib/intel_sse.patch.
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Quieted two Coverity issues in contrib/libtests/timepng.c.
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Fixed issues with scripts/genout.cmake.in (David Capello, Nixon Kwok):
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Added support to use multiple directories in ZLIBINCDIR variable,
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Fixed CMAKE_C_FLAGS with multiple values when genout is compiled on MSVC,
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Fixed pnglibconf.c compilation on OS X including the sysroot path.
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Version 1.6.22rc01 [May 14, 2016]
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No changes.
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Version 1.6.22rc02 [May 16, 2016]
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Removed contrib/timepng from default build; it does not build on platforms
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that don't supply clock_gettime().
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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(subscription required; visit
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https://lists.sourceforge.net/lists/listinfo/png-mng-implement
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to subscribe)
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or to glennrp at users.sourceforge.net
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Glenn R-P
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