libpng/ANNOUNCE
2011-03-31 11:29:05 -05:00

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Libpng 1.5.2 - March 31, 2011
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-1.5.2.tar.xz (LZMA-compressed, recommended)
libpng-1.5.2.tar.gz
libpng-1.5.2.tar.bz2
Source files with CRLF line endings (for Windows), without the
"configure" script
lpng152.7z (LZMA-compressed, recommended)
lpng152.zip
Other information:
libpng-1.5.2-README.txt
libpng-1.5.2-LICENSE.txt
Changes since the last public release (1.5.2):
More -Wshadow fixes for older gcc compilers. Older gcc versions apparently
check formal parameters names in function declarations (as well as
definitions) to see if they match a name in the global namespace.
Revised PNG_EXPORTA macro to not use an empty parameter, to accommodate the
old VisualC++ preprocessor.
Turned on interlace handling in png_read_png().
Fixed gcc pendantic warnings.
Handle longjmp in Cygwin.
Fixed png_get_current_row_number() in the interlaced case.
Cleaned up ALPHA flags and transformations.
Implemented expansion to 16 bits.
Fixed mistake in the descriptions of user read_transform and write_transform
function prototypes in the manual. The row_info struct is png_row_infop.
Corrected png_get_current_row_number documentation
Fixed the read/write row callback documentation.
This documents the current behavior, where the callback is called after
every row with information pertaining to the next row.
Fixed scripts/makefile.vcwin32
Updated contrib/pngsuite/README to add the word "modify".
Define PNG_ALLOCATED and other attributes to blank when _MSC_VER<1300.
ifdef out mask arrays in pngread.c when interlacing is not supported.
Added a hint to try CPP=/bin/cpp if "cpp -E" fails in scripts/pnglibconf.mak
and in contrib/pngminim/*/makefile, eg., on SunOS 5.10, and removed "strip"
from the makefiles.
Fixed a bug (present since libpng-1.0.7) that makes png_handle_sPLT() fail
to compile when PNG_NO_POINTER_INDEXING is defined (Chubanov Kirill)
Don't include standard header files in png.h while building the symbol table,
to avoid cpp failure on SunOS (introduced PNG_BUILDING_SYMBOL_TABLE macro).
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