X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2b5f62a0b2db198609b45dec622a018dae37008e..a47ad3591bff06e4585b7209391138c4c97d2af8:/src/png/ANNOUNCE?ds=sidebyside diff --git a/src/png/ANNOUNCE b/src/png/ANNOUNCE index 91c7ab01be..d8ad39e51f 100644 --- a/src/png/ANNOUNCE +++ b/src/png/ANNOUNCE @@ -1,37 +1,87 @@ +Libpng 1.5.6 - November 3, 2011 -Libpng 1.2.5rc3 - September 18, 2002 - -This is not intended to be a public release. It will be replaced -within a few weeks by a public version or by another test version. - -Changes since the last public release (1.2.4): - -version 1.2.4patch01 [July 20, 2002] - Revised makefile.cygwin to use DLL number 12 instead of 13. -version 1.2.5beta1 [August 6, 2002] - Added code to contrib/gregbook/readpng2.c to ignore unused chunks. - Replaced toucan.png in contrib/gregbook (it has been corrupt since 1.0.11) - Removed some stray *.o files from contrib/gregbook. - Changed png_error() to png_warning() about "Too much data" in pngpread.c - and about "Extra compressed data" in pngrutil.c. - Prevent png_ptr->pass from exceeding 7 in png_push_finish_row(). - Updated makefile.hggcc - Updated png.c and pnggccrd.c handling of return from png_mmx_support() -version 1.2.5beta2 [August 15, 2002] - Only issue png_warning() about "Too much data" in pngpread.c when avail_in - is nonzero. - Updated makefiles to install a separate libpng.so.3 with its own rpath. -version 1.2.5rc1 and 1.0.15rc1 [August 24, 2002] - Revised makefiles to not remove previous minor versions of shared libraries. -version 1.2.5rc2 and 1.0.15rc2 [September 16, 2002] - Revised 13 makefiles to remove "-lz" and "-L$(ZLIBLIB)", etc., from shared - library loader directive. - Added missing "$OBJSDLL" line to makefile.gcmmx. - Added missing "; fi" to makefile.32sunu. -version 1.2.5rc3 and 1.0.15rc3 [September 18, 2002] - Revised libpng-config script. - -Send comments/corrections/commendations to -png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu +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-1.5.6.tar.xz (LZMA-compressed, recommended) + libpng-1.5.6.tar.gz + libpng-1.5.6.tar.bz2 + +Source files with CRLF line endings (for Windows), without the +"configure" script + + lpng156.7z (LZMA-compressed, recommended) + lpng156.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 + +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