| 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 |
| "configure" script |
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| libpng-1.6.17.tar.xz (LZMA-compressed, recommended) |
| libpng-1.6.17.tar.gz |
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| Source files with CRLF line endings (for Windows), without the |
| "configure" script |
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| lpng1617.7z (LZMA-compressed, recommended) |
| lpng1617.zip |
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| Other information: |
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| libpng-1.6.17-README.txt |
| libpng-1.6.17-LICENSE.txt |
| 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 |
| 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). |
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| or to glennrp at users.sourceforge.net |
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| Glenn R-P |