73 lines
3.2 KiB
Plaintext
73 lines
3.2 KiB
Plaintext
Libpng 1.6.17 - March 26, 2015
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This is a public release of libpng, intended for use in production codes.
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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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libpng-1.6.17.tar.xz (LZMA-compressed, recommended)
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libpng-1.6.17.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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lpng1617.7z (LZMA-compressed, recommended)
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lpng1617.zip
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Other information:
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libpng-1.6.17-README.txt
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libpng-1.6.17-LICENSE.txt
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libpng-1.6.17-*.asc (armored detached GPG signatures)
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Changes since the last public release (1.6.16):
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Removed duplicate PNG_SAFE_LIMITS_SUPPORTED handling from pngconf.h
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Corrected the width limit calculation in png_check_IHDR().
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Removed user limits from pngfix. Also pass NULL pointers to
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png_read_row to skip the unnecessary row de-interlace stuff.
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Added testing of png_set_packing() to pngvalid.c
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Regenerated configure scripts in the *.tar distributions with libtool-2.4.4
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Implement previously untested cases of libpng transforms in pngvalid.c
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Fixed byte order in 2-byte filler, in png_do_read_filler().
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Made the check for out-of-range values in png_set_tRNS() detect
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values that are exactly 2^bit_depth, and work on 16-bit platforms.
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Merged some parts of libpng-1.6.17beta01 and libpng-1.7.0beta47.
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Added #ifndef __COVERITY__ where needed in png.c, pngrutil.c and
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pngset.c to avoid warnings about dead code.
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Do not build png_product2() when it is unused.
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Display user limits in the output from pngtest.
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Eliminated the PNG_SAFE_LIMITS macro and restored the 1-million-column
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and 1-million-row default limits in pnglibconf.dfa, that can be reset
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by the user at build time or run time. This provides a more robust
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defense against DOS and as-yet undiscovered overflows.
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Added PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED macro, on by default.
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Allow user to call png_get_IHDR() with NULL arguments (Reuben Hawkins).
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Rebuilt configure scripts with automake-1.15 and libtool-2.4.6
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Moved png_set_filter() prototype into a PNG_WRITE_SUPPORTED block
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of png.h.
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Avoid runtime checks when converting integer to png_byte with
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Visual Studio (Sergey Kosarevsky)
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Removed some comments that the configure script did not handle
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properly from scripts/pnglibconf.dfa and pnglibconf.h.prebuilt.
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Free the unknown_chunks structure even when it contains no data.
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Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF
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for consistency, and remove some useless tests (Alexey Petruchik).
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Remove pnglibconf.h, pnglibconf.c, pnglibconf.pre, pnglibconf.dfn,
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and pnglibconf.out instead of pnglibconf.* in "make clean" (Cosmin).
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Fixed simplified 8-bit-linear to sRGB alpha. The calculated alpha
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value was wrong. It's not clear if this affected the final stored
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value; in the obvious code path the upper and lower 8-bits of the
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alpha value were identical and the alpha was truncated to 8-bits
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rather than dividing by 257 (John Bowler).
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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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