2 Libpng 1.5.2 - March 31, 2011
4 This is a public release of libpng, intended for use in production codes.
6 Files available for download:
8 Source files with LF line endings (for Unix/Linux) and with a
11 libpng-1.5.2.tar.xz (LZMA-compressed, recommended)
15 Source files with CRLF line endings (for Windows), without the
18 lpng152.7z (LZMA-compressed, recommended)
23 libpng-1.5.2-README.txt
24 libpng-1.5.2-LICENSE.txt
26 Changes since the last public release (1.5.2):
28 More -Wshadow fixes for older gcc compilers. Older gcc versions apparently
29 check formal parameters names in function declarations (as well as
30 definitions) to see if they match a name in the global namespace.
31 Revised PNG_EXPORTA macro to not use an empty parameter, to accommodate the
32 old VisualC++ preprocessor.
33 Turned on interlace handling in png_read_png().
34 Fixed gcc pendantic warnings.
35 Handle longjmp in Cygwin.
36 Fixed png_get_current_row_number() in the interlaced case.
37 Cleaned up ALPHA flags and transformations.
38 Implemented expansion to 16 bits.
39 Fixed mistake in the descriptions of user read_transform and write_transform
40 function prototypes in the manual. The row_info struct is png_row_infop.
41 Corrected png_get_current_row_number documentation
42 Fixed the read/write row callback documentation.
43 This documents the current behavior, where the callback is called after
44 every row with information pertaining to the next row.
45 Fixed scripts/makefile.vcwin32
46 Updated contrib/pngsuite/README to add the word "modify".
47 Define PNG_ALLOCATED and other attributes to blank when _MSC_VER<1300.
48 ifdef out mask arrays in pngread.c when interlacing is not supported.
49 Added a hint to try CPP=/bin/cpp if "cpp -E" fails in scripts/pnglibconf.mak
50 and in contrib/pngminim/*/makefile, eg., on SunOS 5.10, and removed "strip"
52 Fixed a bug (present since libpng-1.0.7) that makes png_handle_sPLT() fail
53 to compile when PNG_NO_POINTER_INDEXING is defined (Chubanov Kirill)
54 Don't include standard header files in png.h while building the symbol table,
55 to avoid cpp failure on SunOS (introduced PNG_BUILDING_SYMBOL_TABLE macro).
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