Alien-FreeImage
view release on metacpan or search on metacpan
src/Source/LibPNG/CHANGES view on Meta::CPAN
Version 1.2.9 [April 14, 2006]
Revised makefile.beos and added "none" selector in ltmain.sh
Version 1.2.10beta1 [April 15, 2006]
Renamed "config.h" to "png_conf.h" and revised Makefile.am to add
-DPNG_BUILDING_LIBPNG to compile directive, and modified pngconf.h
to include png_conf.h only when PNG_BUILDING_LIBPNG is defined.
Version 1.2.10beta2 [April 15, 2006]
Manually updated Makefile.in and configure. Changed png_conf.h.in
back to config.h.
Version 1.2.10beta3 [April 15, 2006]
Change png_conf.h back to config.h in pngconf.h.
Version 1.2.10beta4 [April 16, 2006]
Change PNG_BUILDING_LIBPNG to PNG_CONFIGURE_LIBPNG in config/Makefile*.
Version 1.2.10beta5 [April 16, 2006]
Added a configure check for compiling assembler code in pnggccrd.c
Version 1.2.10beta6 [April 17, 2006]
Revised the configure check for pnggccrd.c
Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@
Added @LIBPNG_DEFINES@ to arguments when building libpng.sym
Version 1.2.10beta7 [April 18, 2006]
Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles.
Version 1.2.10rc1 [April 19, 2006]
Ensure pngconf.h doesn't define both PNG_USE_PNGGCCRD and PNG_USE_PNGVCRD
Fixed "LN_FS" typo in makefile.sco and makefile.solaris.
Version 1.2.10rc2 [April 20, 2006]
Added a backslash between -DPNG_CONFIGURE_LIBPNG and -DPNG_NO_ASSEMBLER_CODE
in configure.ac and configure
Made the configure warning about versioned symbols less arrogant.
Version 1.2.10rc3 [April 21, 2006]
Added a note in libpng.txt that png_set_sig_bytes(8) can be used when
writing an embedded PNG without the 8-byte signature.
Revised makefiles and configure to avoid making links to libpng.so.*
Version 1.2.10 [April 23, 2006]
Reverted configure to "rc2" state.
Version 1.2.11beta1 [May 31, 2006]
scripts/libpng.pc.in contained "configure" style version info and would
not work with makefiles.
The shared-library makefiles were linking to libpng.so.0 instead of
libpng.so.3 compatibility as the library.
Version 1.2.11beta2 [June 2, 2006]
Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
buffer overflow.
Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb)
Version 1.2.11beta3 [June 5, 2006]
Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin).
Removed the accidental leftover Makefile.in~ (Cosmin).
Avoided potential buffer overflow and optimized buffer in
png_write_sCAL(), png_write_sCAL_s() (Cosmin).
Removed the include directories and libraries from CFLAGS and LDFLAGS
in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin).
Version 1.2.11beta4 [June 6, 2006]
Allow zero-length IDAT chunks after the entire zlib datastream, but not
after another intervening chunk type.
Version 1.0.19rc1, 1.2.11rc1 [June 13, 2006]
Deleted extraneous square brackets from [config.h] in configure.ac
Version 1.0.19rc2, 1.2.11rc2 [June 14, 2006]
Added prototypes for PNG_INCH_CONVERSIONS functions to png.h
Revised INSTALL and autogen.sh
Fixed typo in several makefiles (-W1 should be -Wl)
Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
Version 1.0.19rc3, 1.2.11rc3 [June 15, 2006]
Removed the new typedefs for 64-bit systems (delay until version 1.4.0)
Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
reading out of bounds.
Version 1.0.19rc4, 1.2.11rc4 [June 15, 2006]
Really removed the new typedefs for 64-bit systems.
Version 1.0.19rc5, 1.2.11rc5 [June 22, 2006]
Removed png_sig_bytes entry from scripts/pngw32.def
Version 1.0.19, 1.2.11 [June 26, 2006]
None.
Version 1.0.20, 1.2.12 [June 27, 2006]
Really increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
buffer overflow.
Version 1.2.13beta1 [October 2, 2006]
Removed AC_FUNC_MALLOC from configure.ac
Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h
Change "logical" to "bitwise" throughout documentation.
Detect and fix attempt to write wrong iCCP profile length (CVE-2006-7244)
Version 1.0.21, 1.2.13 [November 14, 2006]
Fix potential buffer overflow in sPLT chunk handler.
Fix Makefile.am to not try to link to noexistent files.
Check all exported functions for NULL png_ptr.
Version 1.2.14beta1 [November 17, 2006]
Relocated three misplaced tests for NULL png_ptr.
Built Makefile.in with automake-1.9.6 instead of 1.9.2.
Build configure with autoconf-2.60 instead of 2.59
Version 1.2.14beta2 [November 17, 2006]
Added some typecasts in png_zalloc().
Version 1.2.14rc1 [November 20, 2006]
Changed "strtod" to "png_strtod" in pngrutil.c
Version 1.0.22, 1.2.14 [November 27, 2006]
Added missing "$(srcdir)" in Makefile.am and Makefile.in
src/Source/LibPNG/CHANGES view on Meta::CPAN
Added README.txt to the beos, cbuilder5, netware, and xcode projects warning
that they need to be updated, to remove references to pnggccrd.c and
pngvcrd.c and to depend on pngpriv.h
Removed three direct references to read_info_ptr members in pngtest.c
that were detected by the new PNG_DEPSTRUCT macro.
Moved the png_debug macro definitions and the png_read_destroy(),
png_write_destroy() and png_far_to_near() prototypes from png.h
to pngpriv.h (John Bowler)
Moved the synopsis lines for png_read_destroy(), png_write_destroy()
png_debug(), png_debug1(), and png_debug2() from libpng.3 to libpngpf.3.
Version 1.4.0beta94 [November 9, 2009]
Removed the obsolete, unused pnggccrd.c and pngvcrd.c files.
Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
Removed dependency of pngtest.o on pngpriv.h in the makefiles.
Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.
Version 1.4.0beta95 [November 10, 2009]
Changed png_check_sig() to !png_sig_cmp() in contrib programs.
Added -DPNG_CONFIGURE_LIBPNG to contrib/pngminm/*/makefile
Changed png_check_sig() to !png_sig_cmp() in contrib programs.
Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
Changed pngminim/*/gather.sh to stop trying to remove pnggccrd.c and pngvcrd.c
Added dependency on pngpriv.h in contrib/pngminim/*/makefile
Version 1.4.0beta96 [November 12, 2009]
Renamed scripts/makefile.wce to scripts/makefile.cegcc
Revised Makefile.am to use libpng.sys while building libpng.so
so that only PNG_EXPORT functions are exported.
Removed the deprecated png_check_sig() function/macro.
Removed recently removed function names from scripts/*.def
Revised pngtest.png to put chunks in the same order written by pngtest
(evidently the same change made in libpng-1.0beta54 was lost).
Added PNG_PRIVATE macro definition in pngconf.h for possible future use.
Version 1.4.0beta97 [November 13, 2009]
Restored pngtest.png to the libpng-1.4.0beta7 version.
Removed projects/beos and netware.txt; no one seems to be supporting them.
Revised Makefile.in
Version 1.4.0beta98 [November 13, 2009]
Added the "xcode" project to zip distributions,
Fixed a typo in scripts/pngwin.def introduced in beta97.
Version 1.4.0beta99 [November 14, 2009]
Moved libpng-config.in and libpng.pc-configure.in out of the scripts
directory, to libpng-config.in and libpng-pc.in, respectively, and
modified Makefile.am and configure.ac accordingly. Now "configure"
needs nothing from the "scripts" directory.
Avoid redefining PNG_CONST in pngconf.h
Version 1.4.0beta100 [November 14, 2009]
Removed ASM builds from projects/visualc6 and projects/visualc71
Removed scripts/makefile.nommx and makefile.vcawin32
Revised CMakeLists.txt to account for new location of libpng-config.in
and libpng-pc.in
Updated INSTALL to reflect removal and relocation of files.
Version 1.4.0beta101 [November 14, 2009]
Restored the binary files (*.jpg, *.png, some project files) that were
accidentally deleted from the zip and 7z distributions when the xcode
project was added.
Version 1.4.0beta102 [November 18, 2009]
Added libpng-config.in and libpng-pc.in to the zip and 7z distributions.
Fixed a typo in projects/visualc6/pngtest.dsp, introduced in beta100.
Moved descriptions of makefiles and other scripts out of INSTALL into
scripts/README.txt
Updated the copyright year in scripts/pngwin.rc from 2006 to 2009.
Version 1.4.0beta103 [November 21, 2009]
Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt
Align row_buf on 16-byte boundary in memory.
Restored the PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED guard around the call
to png_flush() after png_write_IEND(). See 1.4.0beta32, 1.4.0beta50
changes above and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41 CHANGES. Someone
needs this feature.
Make the 'png_jmpbuf' macro expand to a call that records the correct
longjmp function as well as returning a pointer to the setjmp
jmp_buf buffer, and marked direct access to jmpbuf 'deprecated'.
(John Bowler)
Version 1.4.0beta104 [November 22, 2009]
Removed png_longjmp_ptr from scripts/*.def and libpng.3
Rebuilt configure scripts with autoconf-2.65
Version 1.4.0beta105 [November 25, 2009]
Use fast integer PNG_DIVIDE_BY_255() or PNG_DIVIDE_BY_65535()
to accomplish alpha premultiplication when
PNG_READ_COMPOSITE_NODIV_SUPPORTED is defined.
Changed "/255" to "/255.0" in background calculations to make it clear
that the 255 is used as a double.
Version 1.4.0beta106 [November 27, 2009]
Removed premultiplied alpha feature.
Version 1.4.0beta107 [December 4, 2009]
Updated README
Added "#define PNG_NO_PEDANTIC_WARNINGS" in the libpng source files.
Removed "-DPNG_CONFIGURE_LIBPNG" from the makefiles and projects.
Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco
to put png.h and pngconf.h in $prefix/include, like the other scripts,
instead of in $prefix/include/libpng. Also revised makefile.sco
to put them in $prefix/include/libpng15 instead of in
$prefix/include/libpng/libpng15.
Version 1.4.0beta108 [December 11, 2009]
Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile
Relocated png_do_chop() to its original position in pngrtran.c; the
change in version 1.2.41beta08 caused transparency to be handled wrong
in some 16-bit datastreams (Yusaku Sugai).
Version 1.4.0beta109 [December 13, 2009]
Added "bit_depth" parameter to the private png_build_gamma_table() function.
Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16 but the
PNG_16_TO_8 transform has been set, to avoid unnecessary build of 16-bit
tables.
Version 1.4.0rc02 [December 20, 2009]
Declared png_cleanup_needed "volatile" in pngread.c and pngwrite.c
src/Source/LibPNG/CHANGES view on Meta::CPAN
Version 1.5.2rc02 [March 22, 2011]
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)
Version 1.5.2rc03 [March 24, 2011]
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).
Version 1.5.2 [March 31, 2011]
No changes.
Version 1.5.3beta01 [April 1, 2011]
Re-initialize the zlib compressor before compressing non-IDAT chunks.
Added API functions (png_set_text_compression_level() and four others) 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).
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).
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-1.5.2beta01 (bug report by Andrew Church).
Version 1.5.3beta04 [April 27, 2011]
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 possible clash with the png_jmpbuf macro on some platforms.
Version 1.5.3beta05 [May 6, 2011]
Added the "_POSIX_SOURCE" feature test macro 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.
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.
Pass "" instead of '\0' to png_default_error() in png_err(). This mistake
was introduced in libpng-1.2.20beta01. This fixes CVE-2011-2691.
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
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
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.
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
parameters are supplied by the caller), while in the absence of cHRM
sRGB/Rec 709 values are still used. This introduced a divide-by-zero
bug in png_handle_cHRM().
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.
Version 1.5.3beta09 [May 17, 2011]
Reversed earlier 1.5.3 change of transformation order; move png_expand_16
src/Source/LibPNG/CHANGES view on Meta::CPAN
Version 1.6.0beta21 [April 27, 2012]
Revised scripts/makefile.darwin: use system zlib; remove quotes around
architecture list; add missing ppc architecture; add architecture options
to shared library link; don't try to create a shared lib based on missing
RELEASE variable.
Enable png_set_check_for_invalid_index() for both read and write.
Removed #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED in pngpriv.h around
declaration of png_handle_unknown().
Added -lssp_nonshared in a comment in scripts/makefile.freebsd
and changed deprecated NOOBJ and NOPROFILE to NO_OBJ and NO_PROFILE.
Version 1.6.0beta22 [May 23, 2012]
Removed need for -Wno-cast-align with clang. clang correctly warns on
alignment increasing pointer casts when -Wcast-align is passed. This
fixes the cases that clang warns about either by eliminating the
casts from png_bytep to png_uint_16p (pngread.c), or, for pngrutil.c
where the cast is previously verified or pngstest.c where it is OK, by
introducing new png_aligncast macros to do the cast in a way that clang
accepts.
Version 1.6.0beta23 [June 6, 2012]
Revised CMakeLists.txt to not attempt to make a symlink under mingw.
Made fixes for new optimization warnings from gcc 4.7.0. The compiler
performs an optimization which is safe; however it then warns about it.
Changing the type of 'palette_number' in pngvalid.c removes the warning.
Do not depend upon a GCC feature macro being available for use in generating
the linker mapfile symbol prefix.
Improved performance of new do_check_palette_indexes() function (only
update the value when it actually increases, move test for whether
the check is wanted out of the function.
Version 1.6.0beta24 [June 7, 2012]
Don't check palette indexes if num_palette is 0 (as it can be in MNG files).
Version 1.6.0beta25 [June 16, 2012]
Revised png_set_keep_unknown_chunks() so num_chunks < 0 means ignore all
unknown chunks and all known chunks except for IHDR, PLTE, tRNS, IDAT,
and IEND. Previously it only meant ignore all unknown chunks, the
same as num_chunks == 0. Revised png_image_skip_unused_chunks() to
provide a list of chunks to be processed instead of a list of chunks to
ignore. Revised contrib/gregbook/readpng2.c accordingly.
Version 1.6.0beta26 [July 10, 2012]
Removed scripts/makefile.cegcc from the *.zip and *.7z distributions; it
depends on configure, which is not included in those archives.
Moved scripts/chkfmt to contrib/tools.
Changed "a+w" to "u+w" in Makefile.in to fix CVE-2012-3386.
Version 1.6.0beta27 [August 11, 2012]
Do not compile PNG_DEPRECATED, PNG_ALLOC and PNG_PRIVATE when __GNUC__ < 3.
Do not use __restrict when GNUC is <= 3.1
Removed references to png_zalloc() and png_zfree() from the manual.
Fixed configurations where floating point is completely disabled. Because
of the changes to support symbol prefixing PNG_INTERNAL_FUNCTION declares
floating point APIs during libpng builds even if they are completely
disabled. This requires the png floating point types (png_double*) to be
declared even though the functions are never actually defined. This
change provides a dummy definition so that the declarations work, yet any
implementation will fail to compile because of an incomplete type.
Re-eliminated the use of strcpy() in pngtest.c. An unncessary use of
strcpy() was accidentally re-introduced in libpng16; this change replaces
it with strncpy().
Eliminated use of png_sizeof(); use sizeof() instead.
Use a consistent style for (sizeof type) and (sizeof (array))
Cleanup of png_set_filler(). This function does very different things on
read and write. In libpng 1.6 the two cases can be distinguished and
considerable code cleanup, and extra error checking, is possible. This
makes calls on the write side that have no effect be ignored with a
png_app_error(), which can be disabled in the app using
png_set_benign_errors(), and removes the spurious use of usr_channels
on the read side.
Insist on autotools 1.12.1 for git builds because there are security issues
with 1.12 and insisting on anything less would allow 1.12 to be used.
Removed info_ptr->signature[8] from WRITE-only builds.
Add some conditions for compiling png_fixed(). This is a small function
but it requires "-lm" on some platforms.
Cause pngtest --strict to fail on any warning from libpng (not just errors)
and cause it not to fail at the comparison step if libpng lacks support
for writing chunks that it reads from the input (currently only implemented
for compressed text chunks).
Make all three "make check" test programs work without READ or WRITE support.
Now "make check" will succeed even if libpng is compiled with -DPNG_NO_READ
or -DPNG_NO_WRITE. The tests performed are reduced, but the basic reading
and writing of a PNG file is always tested by one or more of the tests.
Consistently use strlen(), memset(), memcpy(), and memcmp() instead of the
png_strlen(), png_memset(), png_memcpy(), and png_memcmp() macros.
Removed the png_sizeof(), png_strlen(), png_memset(), png_memcpy(), and
png_memcmp() macros.
Work around gcc 3.x and Microsoft Visual Studio 2010 complaints. Both object
to the split initialization of num_chunks.
Version 1.6.0beta28 [August 29, 2012]
Unknown handling fixes and clean up. This adds more correct option
control of the unknown handling, corrects the pre-existing bug where
the per-chunk 'keep' setting is ignored and makes it possible to skip
IDAT chunks in the sequential reader (broken in earlier 1.6 versions).
There is a new test program, test-unknown.c, which is a work in progress
(not currently part of the test suite). Comments in the header files now
explain how the unknown handling works.
Allow fine grain control of unknown chunk APIs. This change allows
png_set_keep_unknown_chunks() to be turned off if not required and causes
both read and write to behave appropriately (on read this is only possible
if the user callback is used to handle unknown chunks). The change
also removes the support for storing unknown chunks in the info_struct
if the only unknown handling enabled is via the callback, allowing libpng
to be configured with callback reading and none of the unnecessary code.
Corrected fix for unknown handling in pngtest. This reinstates the
libpng handling of unknown chunks other than vpAg and sTER (including
unsafe-to-copy chunks which were dropped before) and eliminates the
repositioning of vpAg and sTER in pngtest.png by changing pngtest.png
(so the chunks are where libpng would put them).
Added "tunknown" test and corrected a logic error in png_handle_unknown()
when SAVE support is absent. Moved the shell test scripts for
contrib/libtests from the libpng top directory to contrib/libtests.
png_handle_unknown() must always read or skip the chunk, if
SAVE_UNKNOWN_CHUNKS is turned off *and* the application does not set
a user callback an unknown chunk will not be read, leading to a read
error, which was revealed by the "tunknown" test.
Cleaned up and corrected ICC profile handling.
contrib/libtests/makepng: corrected 'rgb' and 'gray' cases. profile_error
messages could be truncated; made a correct buffer size calculation and
adjusted pngerror.c appropriately. png_icc_check_* checking improved;
changed the functions to receive the correct color type of the PNG on read
or write and check that it matches the color space of the profile (despite
what the comments said before, there is danger in assuming the app will
cope correctly with an RGB profile on a grayscale image and, since it
violates the PNG spec, allowing it is certain to produce inconsistent
app behavior and might even cause app crashes.) Check that profiles
contain the tags needed to process the PNG (tags all required by the ICC
spec). Removed unused PNG_STATIC from pngpriv.h.
Version 1.6.0beta29 [September 4, 2012]
Fixed the simplified API example programs to add the *colormap parameter
to several of he API and improved the error message if the version field
is not set.
Added contrib/examples/* to the *.zip and *.7z distributions.
Updated simplified API synopses and description of the png_image structure
in the manual.
Made makepng and pngtest produce identical PNGs, add "--relaxed" option
to pngtest. The "--relaxed" option turns off the benign errors that are
enabled by default in pre-RC builds. makepng can now write ICC profiles
where the length has not been extended to a multiple of 4, and pngtest
now intercepts all libpng errors, allowing the previously-introduced
"--strict test" on no warnings to actually work.
Improved ICC profile handling including cHRM chunk generation and fixed
Cygwin+MSVC build errors. The ICC profile handling now includes more
checking. Several errors that caused rejection of the profile are now
handled with a warning in such a way that the invalid profiles will be
read by default in release (but not pre-RC) builds but will not be
written by default. The easy part of handling the cHRM chunk is written,
where the ICC profile contains the required data. The more difficult
part plus guessing a gAMA value requires code to pass selected RGB values
through the profile.
Version 1.6.0beta30 [October 24, 2012]
Changed ICC profile matrix/vector types to not depend on array type rules.
By the ANSI-C standard the new types should be identical to the previous
versions, and all known versions of gcc tested with the previous versions
except for GCC-4.2.1 work with this version. The change makes the ANSI-C
rule that const applied to an array of elements applies instead to the
elements in the array moot by explicitly applying const to the base
elements of the png_icc_matrix and png_icc_vector types. The accidental
(harmless) 'const' previously applied to the parameters of two of the
functions have also been removed.
Added a work around for GCC 4.2 optimization bug.
Marked the broken (bad white point) original HP sRGB profiles correctly and
correct comments.
Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
Use /MDd for vstudio debug builds. Also added pngunkown to the vstudio
builds, fixed build errors and corrected a minor exit code error in
pngvalid if the 'touch' file name is invalid.
Add updated WARNING file to projects/vstudio from libpng 1.5/vstudio
Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in
pngrtran.c (Domani Hannes).
Version 1.6.0beta31 [November 1, 2012]
Undid the erroneous change to vstudio/pngvalid build in libpng-1.6.0beta30.
Made pngvalid so that it will build outside the libpng source tree.
Made builds -DPNG_NO_READ_GAMMA compile (the unit tests still fail).
Made PNG_NO_READ_GAMMA switch off interfaces that depend on READ_GAMMA.
Prior to 1.6.0 switching off READ_GAMMA did unpredictable things to the
interfaces that use it (specifically, png_do_background in 1.4 would
simply display composite for grayscale images but do composition
with the incorrect arithmetic for color ones). In 1.6 the semantic
of -DPNG_NO_READ_GAMMA is changed to simply disable any interface that
depends on it; this obliges people who set it to consider whether they
really want it off if they happen to use any of the interfaces in
question (typically most users who disable it won't).
Fixed GUIDs in projects/vstudio. Some were duplicated or missing,
resulting in VS2010 having to update the files.
Removed non-working ICC profile support code that was mostly added to
libpng-1.6.0beta29 and beta30. There was too much code for too little
gain; implementing full ICC color correction may be desireable but is left
up to applications.
Version 1.6.0beta32 [November 25, 2012]
Fixed an intermittent SEGV in pngstest due to an uninitialized array element.
Added the ability for contrib/libtests/makepng.c to make a PNG with just one
color. This is useful for debugging pngstest color inaccuracy reports.
Fixed error checking in the simplified write API (Olaf van der Spek)
Made png_user_version_check() ok to use with libpng version 1.10.x and later.
Version 1.6.0beta33 [December 15, 2012]
Fixed typo in png.c (PNG_SET_CHUNK_MALLOC_MAX should be PNG_CHUNK_MALLOC_MAX)
that causes the MALLOC_MAX limit not to work (John Bowler)
Change png_warning() to png_app_error() in pngwrite.c and comment the
fall-through condition.
Change png_warning() to png_app_warning() in png_write_tRNS().
Rearranged the ARM-NEON optimizations: Isolated the machine specific code
to the hardware subdirectory and added comments to pngrutil.c so that
implementors of other optimizations know what to do.
Fixed cases of unquoted DESTDIR in Makefile.am
Rebuilt Makefile.in, etc., with autoconf-2.69 and automake-1.12.5.
Version 1.6.0beta34 [December 19, 2012]
Cleaned up whitespace in the synopsis portion of the manpage "libpng.3"
Disassembled the version number in scripts/options.awk (necessary for
building on SunOs).
Version 1.6.0beta35 [December 23, 2012]
Made default Zlib compression settings be configurable. This adds #defines to
pnglibconf.h to control the defaults.
( run in 0.488 second using v1.01-cache-2.11-cpan-140bd7fdf52 )