diff options
Diffstat (limited to 'plugins/FreeImage/Source/LibPNG/ANNOUNCE')
| -rw-r--r-- | plugins/FreeImage/Source/LibPNG/ANNOUNCE | 185 |
1 files changed, 16 insertions, 169 deletions
diff --git a/plugins/FreeImage/Source/LibPNG/ANNOUNCE b/plugins/FreeImage/Source/LibPNG/ANNOUNCE index cf41308991..e8498a379c 100644 --- a/plugins/FreeImage/Source/LibPNG/ANNOUNCE +++ b/plugins/FreeImage/Source/LibPNG/ANNOUNCE @@ -1,5 +1,5 @@ -Libpng 1.5.4 - July 7, 2011
+Libpng 1.5.9 - February 18, 2012
This is a public release of libpng, intended for use in production codes.
@@ -8,174 +8,30 @@ Files available for download: Source files with LF line endings (for Unix/Linux) and with a
"configure" script
- libpng-1.5.4.tar.xz (LZMA-compressed, recommended)
- libpng-1.5.4.tar.gz
- libpng-1.5.4.tar.bz2
+ libpng-1.5.9.tar.xz (LZMA-compressed, recommended)
+ libpng-1.5.9.tar.gz
+ libpng-1.5.9.tar.bz2
Source files with CRLF line endings (for Windows), without the
"configure" script
- lpng154.7z (LZMA-compressed, recommended)
- lpng154.zip
+ lpng159.7z (LZMA-compressed, recommended)
+ lpng159.zip
Other information:
- libpng-1.5.4-README.txt
- libpng-1.5.4-LICENSE.txt
+ libpng-1.5.9-README.txt
+ libpng-1.5.9-LICENSE.txt
-Changes since the last public release (1.5.2):
+Changes since the last public release (1.5.8):
- Re-initialize the zlib compressor before compressing non-IDAT chunks.
- Added API functions to set parameters for zlib compression of non-IDAT
- chunks.
- Updated scripts/symbols.def with new API functions.
- Only compile the new zlib re-initializing code when text or iCCP is
- supported, using PNG_WRITE_COMPRESSED_TEXT_SUPPORTED macro.
- Improved the optimization of the zlib CMF byte (see libpng-1.2.6).
- Optimize the zlib CMF byte in non-IDAT compressed chunks
- Fixed gcc -ansi -pedantic compile. A strict ANSI system does not have
- snprintf, and the "__STRICT_ANSI__" detects that condition more reliably
- than __STDC__ (John Bowler).
- Removed the PNG_PTR_NORETURN attribute because it too dangerous. It tells
- the compiler that a user supplied callback (the error handler) does not
- return, yet there is no guarantee in practice that the application code
- will correctly implement the error handler because the compiler only
- issues a warning if there is a mistake (John Bowler).
- Removed the no-longer-used PNG_DEPSTRUCT macro.
- Updated the zlib version to 1.2.5 in the VStudio project.
- Fixed 64-bit builds where png_uint_32 is smaller than png_size_t in
- pngwutil.c (John Bowler).
- Fixed bug with stripping the filler or alpha channel when writing, that
- was introduced in libpng-1.5.2 (bug report by Andrew Church).
- Updated pngtest.png with the new zlib CMF optimization.
- Cleaned up conditional compilation code and of background/gamma handling
- Internal changes only except a new option to avoid compiling the
- png_build_grayscale_palette API (which is not used at all internally.)
- The main change is to move the transform tests (READ_TRANSFORMS,
- WRITE_TRANSFORMS) up one level to the caller of the APIs. This avoids
- calls to spurious functions if all transforms are disabled and slightly
- simplifies those functions. Pngvalid modified to handle this.
- A minor change is to stop the strip_16 and expand_16 interfaces from
- disabling each other; this allows the future alpha premultiplication
- code to use 16-bit intermediate values while still producing 8-bit output.
- png_do_background and png_do_gamma have been simplified to take a single
- pointer to the png_struct rather than pointers to every item required
- from the png_struct. This makes no practical difference to the internal
- code.
- A serious bug in the pngvalid internal routine 'standard_display_init' has
- been fixed - this failed to initialize the red channel and accidentally
- initialized the alpha channel twice.
- Changed png_struct jmp_buf member name from png_jmpbuf to tmp_jmpbuf to
- avoid a clash with the png_jmpbuf macro on some platforms.
- Added appropriate feature test macros to ensure libpng sees the correct API
- _POSIX_SOURCE is defined in pngpriv.h, pngtest.c and pngvalid.c to ensure
- that POSIX conformant systems disable non-POSIX APIs. _ISOC99_SOURCE is
- defined in pngpriv.h to obtain the ISO C99 snprintf definition, when
- available.
- Removed png_snprintf and added formatted warning messages. This change adds
- internal APIs to allow png_warning messages to have parameters without
- requiring the host OS to implement snprintf. As a side effect the
- dependency of the tIME-supporting RFC1132 code on stdio is removed and
- PNG_NO_WARNINGS does actually work now.
- Added PNG_WRITE_OPTIMIZE_CMF_SUPPORTED macro to make the zlib "CMF" byte
- optimization configureable.
- Internal functions were added to claim/release the z_stream and, hopefully,
- make the code more robust. Also deflateEnd checking is added - previously
- libpng would ignore an error at the end of the stream.
- Removed the -D_ALL_SOURCE from definitions for AIX in CMakeLists.txt
- Implemented premultiplied alpha support: png_set_alpha_mode API
- Added expand_16 support to the high level interface.
- Added named value and 'flag' gamma support to png_set_gamma. Made a minor
- change from the previous (unreleased) ABI/API to hide the exact value used
- for Macs - it's not a good idea to embed this in the ABI!
- Moved macro definitions for PNG_HAVE_IHDR, PNG_HAVE_PLTE, and PNG_AFTER_IDAT
- from pngpriv.h to png.h because they must be visible to applications
- that call png_set_unknown_chunks().
- Check for up->location !PNG_AFTER_IDAT when writing unknown chunks
- before IDAT.
- Improved "pngvalid --speed" to exclude more of pngvalid from the time.
- Documented png_set_alpha_mode(), other changes in libpng.3/libpng-manual.txt
- The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative
- parameters are supplied by the caller), while in the absence of cHRM
- sRGB/Rec 709 values are still used.
- The bKGD chunk no longer overwrites the background value set by
- png_set_background(), allowing the latter to be used before the file
- header is read. It never performed any useful function to override
- the default anyway.
- Added memory overwrite and palette image checks to pngvalid.c
- Previously palette image code was poorly checked. Since the transformation
- code has a special palette path in most cases this was a severe weakness.
- Minor cleanup and some extra checking in pngrutil.c and pngrtran.c. When
- expanding an indexed image, always expand to RGBA if transparency is
- present.
- Reversed earlier 1.5.3 change of transformation order; move png_expand_16
- back where it was. The change doesn't work because it requires 16-bit
- gamma tables when the code only generates 8-bit ones. This fails
- silently; the libpng code just doesn't do any gamma correction. Moving
- the tests back leaves the old, inaccurate, 8-bit gamma calculations, but
- these are clearly better than none!
- png_set_background() and png_expand_16() did not work together correctly.
- This problem is present in 1.5.2; if png_set_background is called with
- need_expand false and the matching 16 bit color libpng erroneously just
- treats it as an 8-bit color because of where png_do_expand_16 is in the
- transform list. This simple fix reduces the supplied colour to 8-bits,
- so it gets smashed, but this is better than the current behavior.
- Added tests for expand16, more fixes for palette image tests to pngvalid.
- Corrects the code for palette image tests and disables attempts to
- validate palette colors.
- Fixed uninitialized memory read in png_format_buffer() (Bug report by
- Frank Busse, related to CVE-2004-0421).
- Fixed png_handle_sCAL which is broken in 1.5; added sCAL to pngtest.png
- Revised documentation about png_set_user_limits() to say that it also affects
- png writing.
- Revised handling of png_set_user_limits() so that it can increase the
- limit beyond the PNG_USER_WIDTH|HEIGHT_MAX; previously it could only
- reduce it.
- Make the 16-to-8 scaling accurate. Dividing by 256 with no rounding is
- wrong (high by one) 25% of the time. Dividing by 257 with rounding is
- wrong in 128 out of 65536 cases. Getting the right answer all the time
- without division is easy.
- Added "_SUPPORTED" to the PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION macro.
- Added projects/owatcom, an IDE project for OpenWatcom to replace
- scripts/makefile.watcom. This project works with OpenWatcom 1.9. The
- IDE autogenerates appropriate makefiles (libpng.mk) for batch processing.
- The project is configurable, unlike the Visual Studio project, so long
- as the developer has an awk.
- Changed png_set_gAMA to limit the gamma value range so that the inverse
- of the stored value cannot overflow the fixed point representation,
- and changed other things OpenWatcom warns about.
- Revised pngvalid.c to test PNG_ALPHA_MODE_SUPPORTED correctly. This allows
- pngvalid to build when ALPHA_MODE is not supported, which is required if
- it is to build on libpng 1.4.
- Removed string/memory macros that are no longer used and are not
- necessarily fully supportable, particularly png_strncpy and png_snprintf.
- Added log option to pngvalid.c and attempted to improve gamma messages.
- People found the presence of a beta release following an rc release
- to be confusing; therefore we bump the version to libpng-1.5.4beta01
- and there will be no libpng-1.5.3 release.
- Moved definitions of PNG_HAVE_IHDR, PNG_AFTER_IDAT, and PNG_HAVE_PLTE
- outside of an unknown-chunk block in png.h because they are also
- needed for other uses.
- Added png_set_scale_16() API, to match inaccurate results from previous
- libpng versions, configurable with PNG_READ_SCALE_16_TO_8_SUPPORTED.
- Fixed a problem in png_do_expand_palette() exposed by optimization in
- 1.5.3beta06
- Also removed a spurious and confusing "trans" member ("trans") from png_info.
- The palette expand optimization prevented expansion to an intermediate RGBA
- form if tRNS was present but alpha was marked to be stripped; this exposed
- a check for tRNS in png_do_expand_palette() which is inconsistent with the
- code elsewhere in libpng.
- Added PNG_TRANSFORM_SCALE_16 to the high-level read transforms.
- If PNG_READ_16_TO_8_ACCURATE_SCALE is not enabled, png_set_scale_16()
- and png_do_scale_16_to_8() aren't built.
- Revised contrib/visupng, gregbook, and pngminim to demonstrate scale_16_to_8
- Fixed pngvalid, simplified macros, added checking for 0 in sCAL.
- The ACCURATE scale macro is no longer defined in libpng-1.5 - call the
- png_scale_16_to_8 API. Made sure that PNG_READ_16_TO_8 is still defined
- if the png_strip_16_to_8 API is present. png_check_fp_number now
- maintains some state so that positive, negative and zero values are
- identified. sCAL uses these to be strictly spec conformant.
- Define PNG_ALLOCATED to "restrict" only if MSC_VER >= 1400.
+ Rebuilt configure scripts in the tar distributions.
+ Removed two unused definitions from scripts/pnglibconf.h.prebuilt
+ Removed some unused arrays (with #ifdef) from png_read_push_finish_row().
+ Removed tests for no-longer-used *_EMPTY_PLTE_SUPPORTED from pngstruct.h
+ Fixed CVE-2011-3026 buffer overrun bug. Deal more correctly with the test
+ on iCCP chunk length. Also removed spurious casts that may hide problems
+ on 16-bit systems.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
@@ -184,12 +40,3 @@ to subscribe) or to glennrp at users.sourceforge.net
Glenn R-P
-*/ }
-#endif
-
-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
|