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[devel] Imported from libpng-1.5.4.tar

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This commit is contained in:
Glenn Randers-Pehrson
2011-07-07 06:24:57 -05:00
parent 38404a5996
commit d404b6d488
39 changed files with 119 additions and 171 deletions
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130
ANNOUNCE
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@@ -1,44 +1,38 @@
Libpng 1.5.4rc01 - June 30, 2011
Libpng 1.5.4 - July 7, 2011
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.
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
1.5.4rc01.tar.xz (LZMA-compressed, recommended)
1.5.4rc01.tar.gz
1.5.4rc01.tar.bz2
libpng-1.5.4.tar.xz (LZMA-compressed, recommended)
libpng-1.5.4.tar.gz
libpng-1.5.4.tar.bz2
Source files with CRLF line endings (for Windows), without the
"configure" script
lp154r01.7z (LZMA-compressed, recommended)
lp154r01.zip
lpng154.7z (LZMA-compressed, recommended)
lpng154.zip
Other information:
1.5.4rc01-README.txt
1.5.4rc01-LICENSE.txt
libpng-1.5.4-README.txt
libpng-1.5.4-LICENSE.txt
Changes since the last public release (1.5.2):
Version 1.5.3beta01 [April 1, 2011]
Re-initialize the zlib compressor before compressing non-IDAT chunks.
Added API functions to set parameters for zlib compression of non-IDAT
chunks.
Version 1.5.3beta02 [April 3, 2011]
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-1.2.6beta03).
Improved the optimization of the zlib CMF byte (see libpng-1.2.6).
Optimize the zlib CMF byte in non-IDAT compressed chunks
Version 1.5.3beta03 [April 16, 2011]
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).
@@ -52,9 +46,7 @@ Version 1.5.3beta03 [April 16, 2011]
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-1.5.2beta01 (bug report by Andrew Church).
Version 1.5.3beta04 [April 27, 2011]
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
@@ -75,8 +67,6 @@ Version 1.5.3beta04 [April 27, 2011]
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.
Version 1.5.3beta05 [May 6, 2011]
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
@@ -89,19 +79,11 @@ Version 1.5.3beta05 [May 6, 2011]
PNG_NO_WARNINGS does actually work now.
Added PNG_WRITE_OPTIMIZE_CMF_SUPPORTED macro to make the zlib "CMF" byte
optimization configureable.
IDAT compression failed if preceded by a compressed text chunk (bug
introduced in libpng-1.5.3beta01-02). This was because the attempt to
reset the zlib stream in png_write_IDAT happened after the first IDAT
chunk had been deflated - much too late. In this change internal
functions were added to claim/release the z_stream and, hopefully, make
the code more robust. Also deflateEnd checking is added - previously
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.
Version 1.5.3beta06 [May 8, 2011]
Removed the -D_ALL_SOURCE from definitions for AIX in CMakeLists.txt
Implemented premultiplied alpha support: png_set_alpha_mode API
Version 1.5.3beta07 [May 11, 2011]
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
@@ -111,8 +93,6 @@ Version 1.5.3beta07 [May 11, 2011]
that call png_set_unknown_chunks().
Check for up->location !PNG_AFTER_IDAT when writing unknown chunks
before IDAT.
Version 1.5.3beta08 [May 16, 2011]
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
@@ -128,15 +108,12 @@ Version 1.5.3beta08 [May 16, 2011]
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.
Version 1.5.3beta09 [May 17, 2011]
Reversed earlier 1.5.3 change of transformation order; move png_expand_16 back.
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!
Version 1.5.3beta10 [May 20, 2011]
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
@@ -146,15 +123,8 @@ Version 1.5.3beta10 [May 20, 2011]
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.
Version 1.5.3rc01 [June 3, 2011]
No changes.
Version 1.5.3rc02 [June 8, 2011]
Fixed uninitialized memory read in png_format_buffer() (Bug report by
Frank Busse, related to CVE-2004-0421).
Version 1.5.3beta11 [June 11, 2011]
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.
@@ -180,29 +150,14 @@ Version 1.5.3beta11 [June 11, 2011]
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.
Version 1.5.3 [omitted]
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.
Version 1.5.4beta01 [June 14, 2011]
Made it possible to undefine PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
to get the same (inaccurate) output as libpng-1.5.2 and earlier.
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.
Version 1.5.4beta02 [June 14, 2011]
Fixed and clarified LEGACY 16-to-8 scaling code.
Added png_set_chop_16() API, to match inaccurate results from previous
libpng versions.
Removed the ACCURATE and LEGACY options (they are no longer useable)
Use the old scaling method for background if png_set_chop_16() was
called.
Made png_set_chop_16() API removeable with PNG_NO_READ_CHOP_16_TO_8_SUPPORTED
Version 1.5.4beta03 [June 15, 2011]
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.
@@ -210,40 +165,29 @@ Version 1.5.4beta03 [June 15, 2011]
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.
Correction to the expand_16 code; removed extra instance of
png_set_scale_16_to_8 from pngpriv.h
Version 1.5.4beta04 [June 16, 2011]
Added a missing "#ifdef PNG_READ_BACKGROUND_SUPPORTED/#endif" in pngrtran.c
Added PNG_TRANSFORM_CHOP_16 to the high-level read transforms.
Made PNG_READ_16_TO_8_ACCURATE_SCALE configurable again. If this is
not enabled, png_set_strip_16() and png_do_scale_16_to_8() aren't built.
Revised contrib/visupng, gregbook, and pngminim to demonstrate chop_16_to_8
Version 1.5.4beta05 [June 16, 2011]
Renamed png_set_strip_16() to png_set_scale_16() and renamed
png_set_chop_16() to png_set_strip(16) in an attempt to minimize the
behavior changes between libpng14 and libpng15.
Version 1.5.4beta06 [June 18, 2011]
Fixed new bug that was causing both strip_16 and scale_16 to be applied.
Version 1.5.4beta07 [June 19, 2011]
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 1.5 - call the
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.
Version 1.5.4beta08 [June 23, 2011]
Fixed pngvalid if ACCURATE_SCALE is defined.
Updated scripts/pnglibconf.h.prebuilt.
Version 1.5.4rc01 [June 30, 2011]
Define PNG_ALLOCATED to "restrict" only if MSC_VER >= 1400.
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*/ }
#endif
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