X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9c0d9ce3285864062f74951871971fec1debeafb..60435227b10297510316a88f67758fb6b6d93c10:/src/png/ANNOUNCE diff --git a/src/png/ANNOUNCE b/src/png/ANNOUNCE index d8ad39e51f..37a4b49397 100644 --- a/src/png/ANNOUNCE +++ b/src/png/ANNOUNCE @@ -1,4 +1,5 @@ -Libpng 1.5.6 - November 3, 2011 + +Libpng 1.6.2 - April 25, 2013 This is a public release of libpng, intended for use in production codes. @@ -7,76 +8,37 @@ Files available for download: Source files with LF line endings (for Unix/Linux) and with a "configure" script - libpng-1.5.6.tar.xz (LZMA-compressed, recommended) - libpng-1.5.6.tar.gz - libpng-1.5.6.tar.bz2 + libpng-1.6.2.tar.xz (LZMA-compressed, recommended) + libpng-1.6.2.tar.gz Source files with CRLF line endings (for Windows), without the "configure" script - lpng156.7z (LZMA-compressed, recommended) - lpng156.zip + lpng162.7z (LZMA-compressed, recommended) + lpng162.zip Other information: - libpng-1.5.6-README.txt - libpng-1.5.6-LICENSE.txt - -Changes since the last public release (1.5.5): - - Fixed some 64-bit type conversion warnings in pngrtran.c - Moved row_info from png_struct to a local variable. - The various interlace mask arrays have been made into arrays of - bytes and made PNG_CONST and static (previously some arrays were - marked PNG_CONST and some weren't). - Additional checks have been added to the transform code to validate the - pixel depths after the transforms on both read and write. - Removed some redundant code from pngwrite.c, in png_desgtroy_write_struct(). - Changed chunk reading/writing code to use png_uint_32 instead of png_byte[4]. - This removes the need to allocate temporary strings for chunk names on - the stack in the read/write code. Unknown chunk handling still uses the - string form because this is exposed in the API. - Added a note in the manual the png_read_update_info() must be called only - once with a particular info_ptr. - Revised test-pngtest.sh to report FAIL when pngtest fails. - Added "--strict" option to pngtest, to report FAIL when the failure is - only because the resulting valid files are different. - Revised CMakeLists.txt to work with mingw and removed some material from - CMakeLists.txt that is no longer useful in libpng-1.5. - Fixed typo in Makefile.in and Makefile.am ("-M Wl" should be "-M -Wl")." - Speed up png_combine_row() for interlaced images. This reduces the generality - of the code, allowing it to be optimized for Adam7 interlace. The masks - passed to png_combine_row() are now generated internally, avoiding - some code duplication and localizing the interlace handling somewhat. - Align png_struct::row_buf - previously it was always unaligned, caused by - a bug in the code that attempted to align it; the code needs to subtract - one from the pointer to take account of the filter byte prepended to - each row. - Optimized png_combine_row() when rows are aligned. This gains a small - percentage for 16-bit and 32-bit pixels in the typical case where the - output row buffers are appropriately aligned. The optimization was not - previously possible because the png_struct buffer was always misaligned. - Removed two redundant tests for unitialized row. - Fixed a relatively harmless memory overwrite in compressed text writing - with a 1 byte zlib buffer. - Add ability to call png_read_update_info multiple times to pngvalid.c - Fixes for multiple calls to png_read_update_info. These fixes attend to - most of the errors revealed in pngvalid, however doing the gamma work - twice results in inaccuracies that can't be easily fixed. There is now - a warning in the code if this is going to happen. - Turned on multiple png_read_update_info in pngvalid transform tests. - Prevent libpng from overwriting unused bits at the end of the image when - it is not byte aligned, while reading. Prior to libpng-1.5.6 libpng would - overwrite the partial byte at the end of each row if the row width was not - an exact multiple of 8 bits and the image is not interlaced. - Made png_ptr->prev_row an aligned pointer into png_ptr->big_prev_row - (Mans Rullgard). - Changed misleading "Missing PLTE before cHRM" warning to "Out of place cHRM" - Added PNG_LSR() and PNG_LSL() macros to defend against buggy compilers that - evaluate non-taken code branches and complain about out-of-range shifts. - Renamed the local variable 'byte' because it appears in a MSYS header - file. - Added #define PNG_ALIGN_TYPE PNG_ALIGN_NONE to contrib/pngminim/*/pngusr.h + libpng-1.6.2-README.txt + libpng-1.6.2-LICENSE.txt + +Changes since the last public release (1.6.1): + + Updated documentation of 1.5.x to 1.6.x changes in iCCP chunk handling. + Fixed incorrect warning of excess deflate data. End condition - the + warning would be produced if the end of the deflate stream wasn't read + in the last row. The warning is harmless. + Corrected the test on user transform changes on read. It was in the + png_set of the transform function, but that doesn't matter unless the + transform function changes the rowbuf size, and that is only valid if + transform_info is called. + Corrected a misplaced closing bracket in contrib/libtests/pngvalid.c + (Flavio Medeiros). + Corrected length written to uncompressed iTXt chunks (Samuli Suominen). + Added contrib/tools/fixitxt.c, to repair the erroneous iTXt chunk length + written by libpng-1.6.0 and 1.6.1. + Disallow storing sRGB information when the sRGB is not supported. + Merge pngtest.c with libpng-1.7.0 Send comments/corrections/commendations to png-mng-implement at lists.sf.net (subscription required; visit