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-Libpng 1.6.17 - March 26, 2015
-
-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-1.6.17.tar.xz (LZMA-compressed, recommended)
- libpng-1.6.17.tar.gz
-
-Source files with CRLF line endings (for Windows), without the
-"configure" script
-
- lpng1617.7z (LZMA-compressed, recommended)
- lpng1617.zip
-
-Other information:
-
- libpng-1.6.17-README.txt
- libpng-1.6.17-LICENSE.txt
- libpng-1.6.17-*.asc (armored detached GPG signatures)
-
-Changes since the last public release (1.6.16):
-
- Removed duplicate PNG_SAFE_LIMITS_SUPPORTED handling from pngconf.h
- Corrected the width limit calculation in png_check_IHDR().
- Removed user limits from pngfix. Also pass NULL pointers to
- png_read_row to skip the unnecessary row de-interlace stuff.
- Added testing of png_set_packing() to pngvalid.c
- Regenerated configure scripts in the *.tar distributions with libtool-2.4.4
- Implement previously untested cases of libpng transforms in pngvalid.c
- Fixed byte order in 2-byte filler, in png_do_read_filler().
- Made the check for out-of-range values in png_set_tRNS() detect
- values that are exactly 2^bit_depth, and work on 16-bit platforms.
- Merged some parts of libpng-1.6.17beta01 and libpng-1.7.0beta47.
- Added #ifndef __COVERITY__ where needed in png.c, pngrutil.c and
- pngset.c to avoid warnings about dead code.
- Do not build png_product2() when it is unused.
- Display user limits in the output from pngtest.
- Eliminated the PNG_SAFE_LIMITS macro and restored the 1-million-column
- and 1-million-row default limits in pnglibconf.dfa, that can be reset
- by the user at build time or run time. This provides a more robust
- defense against DOS and as-yet undiscovered overflows.
- Added PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED macro, on by default.
- Allow user to call png_get_IHDR() with NULL arguments (Reuben Hawkins).
- Rebuilt configure scripts with automake-1.15 and libtool-2.4.6
- Moved png_set_filter() prototype into a PNG_WRITE_SUPPORTED block
- of png.h.
- Avoid runtime checks when converting integer to png_byte with
- Visual Studio (Sergey Kosarevsky)
- Removed some comments that the configure script did not handle
- properly from scripts/pnglibconf.dfa and pnglibconf.h.prebuilt.
- Free the unknown_chunks structure even when it contains no data.
- Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF
- for consistency, and remove some useless tests (Alexey Petruchik).
- Remove pnglibconf.h, pnglibconf.c, pnglibconf.pre, pnglibconf.dfn,
- and pnglibconf.out instead of pnglibconf.* in "make clean" (Cosmin).
- Fixed simplified 8-bit-linear to sRGB alpha. The calculated alpha
- value was wrong. It's not clear if this affected the final stored
- value; in the obvious code path the upper and lower 8-bits of the
- alpha value were identical and the alpha was truncated to 8-bits
- rather than dividing by 257 (John Bowler).
-
-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