mirror of
https://git.code.sf.net/p/libpng/code.git
synced 2025-07-10 18:04:09 +02:00
302c58b8cf
This is a work-in-progress; no tests are run automatically at present and the program by virtue of exhaustively testing all the transforms is very slow.
514 lines
27 KiB
Plaintext
514 lines
27 KiB
Plaintext
|
|
Libpng 1.7.0beta30 - February 1, 2014
|
|
|
|
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.
|
|
|
|
Files available for download:
|
|
|
|
Source files with LF line endings (for Unix/Linux) and with a
|
|
"configure" script
|
|
|
|
1.7.0beta30.tar.xz (LZMA-compressed, recommended)
|
|
1.7.0beta30.tar.gz
|
|
|
|
Source files with CRLF line endings (for Windows), without the
|
|
"configure" script
|
|
|
|
lp170b30.7z (LZMA-compressed, recommended)
|
|
lp170b30.zip
|
|
|
|
Other information:
|
|
|
|
1.7.0beta30-README.txt
|
|
1.7.0beta30-LICENSE.txt
|
|
Gnupg/*.asc (PGP armored detached signatures)
|
|
|
|
Changes since the last public release (1.6.0):
|
|
|
|
Version 1.7.0alpha01 [December 15, 2012]
|
|
Started 1.7.0 branch from libpng-1.6.0beta33.
|
|
Made 8-bit compose and rgb_to_grayscale accuracy improvements. These
|
|
changes cause 16-bit arithmetic to be used for 8-bit data in the gamma
|
|
corrected compose and grayscale operations. The arithmetic errors have
|
|
three sources all of which are fixed in this commit:
|
|
1) 8-bit linear calculations produce massive errors for lower intensity
|
|
values.
|
|
2) The old 16-bit "16 to 8" gamma table code erroneously wrote the lowest
|
|
output value into a table entry which corresponded to multiple output
|
|
values (so where the value written should have been the closest to the
|
|
transformed input value.)
|
|
3) In a number of cases the code to access the 16-bit table did not round;
|
|
it did a simple shift, which was wrong and made the side effects of (2)
|
|
even worse.
|
|
The new gamma code does not have the 16-to-8 problem at the cost of slightly
|
|
more calculations and the algorithm used to minimize the number of
|
|
calculations has been extended to all the 16-bit tables; it has advantages
|
|
for any significant gamma correction.
|
|
Rearranged png_struct, remove unused members, change png_set_filter handling
|
|
png_struct members rearranged - partly to reorder to avoid packing, partly
|
|
to put frequently accessed members at the start and partly to make
|
|
the grouping more clear. png_set_filter code has been rewritten and the
|
|
code shared with png_write_start_row moved to a common function. Comments
|
|
in png.h have been made more clear. Minor fixes to
|
|
contrib/libtests/timepng.c and some of the png_*_tRNS logic, including
|
|
more error detection in png_set_tRNS.
|
|
Cleaned up USER_LIMITS feature, removing members from png_struct when not
|
|
required.
|
|
Rearranged ARM-NEON optimizations to isolate the machine specific code to
|
|
the hardware subdirectory, and add comments to pngrutil.c so that
|
|
implementors of other optimizations will know what to do.
|
|
Fixed cases of unquoted DESTDIR in Makefile.am.
|
|
Rebuilt Makefile.in, configure, etc., with autoconf-2.69 and automake-1.12.5.
|
|
|
|
Version 1.7.0alpha02 [December 17, 2012]
|
|
Removed functions that were deprecated in libpng-1.6.0:
|
|
png_reset_zstream(), png_info_init_3(), and png_data_freer() and its
|
|
associated flags.
|
|
Removed some duplicated lines from contrib/tools/scale.c and png.c.
|
|
Changed some instances of png_warning() to png_app_error().
|
|
Updated some left over "1.6.0beta32" in code sources.
|
|
Fixed a "png_structp" prototype (should be png_structrp) in arm_init.c
|
|
Updated the version-number hack in pngvalid.c
|
|
|
|
Version 1.7.0alpha03 [December 19, 2012]
|
|
Cleaned up and enhanced the configure option; libpng now correctly
|
|
links and tests against zlib with a prefix; tests have been clarified; and
|
|
irrelevant or obsolete things (as defined by the autotools man page) have
|
|
been removed.
|
|
Documented new PNG_ABORT behavior in the manual and commentary in pngerror.c
|
|
Cleaned up whitespace in the synopsis portion of the manpage "libpng.3"
|
|
Fixed previous support for Z_PREFIX in configure builds, corrected sCAL APIs;
|
|
some of these use floating point arithmetic so they need to be disabled if
|
|
floating point arithmetic is switched off. This is a quiet API change -
|
|
previously it appeared that the APIs were supported if fixed point
|
|
arithmetic was used internally, however they required certain APIs (floor,
|
|
modf, frexp, atof) that are part of C floating point support. Changed
|
|
png_fixed and the gamma code specific version of the same to avoid floor(),
|
|
which may be a library function (not an intrinsic). Removed unused #if 0
|
|
code.
|
|
Disassembled the version number in scripts/options.awk (necessary for
|
|
building on SunOs).
|
|
|
|
Version 1.7.0alpha04 [December 23, 2012]
|
|
Added scripts/makefile.msys contributed by Christopher M. Wheeler
|
|
Made default Zlib compression settings be configurable. This adds #defines to
|
|
pnglibconf.h to control the defaults.
|
|
Fixed Windows build issues, enabled ARM compilation. Various warnings issued
|
|
by earlier versions of GCC fixed for Cygwin and Min/GW (which both use old
|
|
GCCs.) ARM support is enabled by default in zlib.props (unsupported by
|
|
Microsoft) and ARM compilation is made possible by deleting the check for
|
|
x86. The test programs cannot be run because they are not signed.
|
|
|
|
Version 1.7.0alpha05 [December 24, 2012]
|
|
Discontinued distributing libpng-1.x.x.tar.bz2.
|
|
Discontinued distributing libpng-1.7.0-1.6.0-diff.txt and similar.
|
|
|
|
Version 1.7.0alpha06 [January 1, 2013]
|
|
Fixed 'make distcheck' on SUN OS - libpng.so was not being removed
|
|
|
|
Version 1.7.0alpha07 [January 10, 2013]
|
|
Fixed conceivable but difficult to repro overflow. Also added two test
|
|
programs to generate and test a PNG which should have the problem.
|
|
|
|
Version 1.7.0alpha08 [January 17, 2013]
|
|
Corrected previous attempt at overflow detection in png_set_unknown_chunks().
|
|
|
|
Version 1.7.0alpha09 [January 21, 2013]
|
|
Pulled changes to multi-chunk handling from libpng-1.6.0beta40.
|
|
|
|
Version 1.7.0alpha10 [February 5, 2013]
|
|
Make symbol prefixing work with the ARM neon optimizations. Also
|
|
allow pngpriv.h to be included for preprocessor definitions only, so
|
|
it can be used in non-C/C++ files.
|
|
Added png_get_palette_max() function.
|
|
Changed png_size_t to size_t throughout headers, make sRGB check numbers
|
|
consistent.
|
|
Fixed ARM support (Mans Rullgard).
|
|
Removed stray out-of-order #endif and #ifdef (Mans Rullgard).
|
|
Ported libpng 1.5 options.awk/dfn file handling to 1.7, fixed one bug.
|
|
Rebuilt Makefile.in, configure, etc., with autoconf-2.69 and automake-1.13.
|
|
Minor fixes to assembler changes, verified with a dummy .S file
|
|
Removed cc -E workround, corrected png_get_palette_max API. Tested on
|
|
SUN OS cc 5.9, which demonstrates the tokenization problem previously
|
|
avoided by using /lib/cpp. Since all .dfn output is now protected
|
|
in double quotes unless it is to be macro substituted the fix should work
|
|
everywhere.
|
|
|
|
Version 1.7.0beta01 [February 15, 2013]
|
|
Enable parallel tests and rearrange TESTS order to take advantage of
|
|
the massive speed improvements use a make capable of parallel builds
|
|
on a multi-CPU machine and pass the right arguments to make (-j10000
|
|
for GNU make) to get the build to run in parallel.
|
|
Fixed previous support for Z_PREFIX in configure builds, corrected
|
|
sCAL APIs; some of these use floating point arithmetic so need to be
|
|
disabled if floating point arithmetic is switched off. This is a quiet API
|
|
change - previously it appeared that the APIs were supported if fixed point
|
|
arithmetic was used internally, however they required certain APIs (floor,
|
|
modf, frexp, atof) that are part of C floating point support. Changed
|
|
png_fixed and the gamma code specific version of the same to avoid floor(),
|
|
which may be a library function (not an intrinsic). Removed unused #if 0
|
|
code.
|
|
Fixed make distcheck to skip over the test result files. They were
|
|
being included because the whole of the 'tests' directory is included,
|
|
fixed to just include the actual test files and tests/pngstest. Also
|
|
reverted the previous erroneous change to remove the ${srcdir} from the
|
|
front of contrib, scripts, projects and added an explanation of what is
|
|
going on to Makefile.am
|
|
Fixed missing dependency in --prefix builds. The intermediate
|
|
internal 'prefix.h' file can only be generated correctly after pnglibconf.h,
|
|
however the dependency was not in Makefile.am. The symptoms are
|
|
unpredictable depending on the order make chooses to build pngprefix.h and
|
|
pnglibconf.h, often the error goes unnoticed because there is a system
|
|
pnglibconf.h to use instead.
|
|
Accept "," as a separator in pnglibconf.dfa and allow for
|
|
continuation lines. This adds to the syntax of "option" and "chunk" lines,
|
|
allowing the elements to be separated by a "," at the end of an element and
|
|
interpreting a "," at end of line as a continuation - so the following line
|
|
is read. The new syntax is optional and solely provided for readability.
|
|
Enclosed the new png_get_palette_max in #ifdef PNG_GET_PALETTE_MAX_SUPPORTED
|
|
block, and revised pnglibconf.h and pnglibconf.h.prebuilt accordingly.
|
|
|
|
Version 1.7.0beta02 [February 18, 2013]
|
|
Fixed a race condition in the creation of the build 'scripts' directory
|
|
while building with a parallel make.
|
|
Use approved/supported Android method to check for NEON, use Linux/POSIX
|
|
1003.1 API to check /proc/self/auxv avoiding buffer allocation and other
|
|
library calls (ported from libpng15).
|
|
Use parentheses more consistently in "#if defined(MACRO)" tests.
|
|
Folded long lines.
|
|
|
|
Version 1.7.0beta03 [February 22, 2013]
|
|
Reenabled code to allow zero length PLTE chunks for MNG.
|
|
Fixed ALIGNED_MEMORY support.
|
|
Allow run-time ARM NEON checking to be disabled. A new configure option:
|
|
--enable-arm-neon=always will stop the run-time checks. New checks
|
|
within arm/arm_init.c will cause the code not to be compiled unless
|
|
__ARM_NEON__ is set. This should make it fail safe (if someone asks
|
|
for it on then the build will fail if it can't be done.)
|
|
Updated the INSTALL document.
|
|
|
|
Version 1.7.0beta04 [February 27, 2013]
|
|
Revised INSTALL to recommend using CPPFLAGS instead of INCLUDES.
|
|
Revised scripts/makefile.freebsd to respect ZLIBLIB and ZLIBINC.
|
|
Revised scripts/dfn.awk to work with the buggy MSYS awk that has trouble
|
|
with CRLF line endings.
|
|
|
|
Version 1.7.0beta05 [March 5, 2013]
|
|
Avoid a possible memory leak in contrib/gregbook/readpng.c
|
|
Changed user chunk callback API to respect global and per chunk defaults.
|
|
Previously a return of 0 from a user chunk callback would result in the
|
|
chunk being saved (if this was safe, even if the chunk was unsafe-to-copy);
|
|
this change respects the defaults set by the application, so unknown chunks
|
|
can be discarded by default and known-safe ones preserved.
|
|
Corrected Android builds and corrected libpng.vers with symbol
|
|
prefixing. This adds an API to set optimization options externally,
|
|
providing an alternative and general solution for the non-portable
|
|
run-time tests used by the ARM Neon code. It also makes those tests
|
|
compile and link on Android. The order of settings vs options in
|
|
pnglibconf.h is reversed to allow settings to depend on options and
|
|
options can now set (or override) the defaults for settings.
|
|
|
|
Version 1.7.0beta06 [March 13, 2013]
|
|
Corrected simplified API default gamma for color-mapped output, added
|
|
a flag to change default. In 1.6.0 when the simplified API was used
|
|
to produce color-mapped output from an input image with no gamma
|
|
information the gamma assumed for the input could be different from
|
|
that assumed for non-color-mapped output. In particular 16-bit depth
|
|
input files were assumed to be sRGB encoded, whereas in the 'direct'
|
|
case they were assumed to have linear data. This was an error. The
|
|
fix makes the simplified API treat all input files the same way and
|
|
adds a new flag to the png_image::flags member to allow the
|
|
application/user to specify that 16-bit files contain sRGB data
|
|
rather than the default linear.
|
|
Fixed bugs in the pngpixel and makepng test programs.
|
|
Fixed CMakelists.txt to allow building a single variant of the library
|
|
(Claudio Bley):
|
|
Introduced a PNG_LIB_TARGETS variable that lists all activated library
|
|
targets. It is an error if this variable ends up empty, ie. you have
|
|
to build at least one library variant.
|
|
Made the *_COPY targets only depend on library targets actually being build.
|
|
Use PNG_LIB_TARGETS to unify a code path.
|
|
Changed the CREATE_SYMLINK macro to expect the full path to a file as the
|
|
first argument. When symlinking the filename component of that path is
|
|
determined and used as the link target.
|
|
Use copy_if_different in the CREATE_SYMLINK macro.
|
|
Eliminated two warnings from the Intel C compiler. The warnings are
|
|
technically valid, although a reasonable treatment of division would
|
|
show it to be incorrect.
|
|
|
|
Version 1.7.0beta07 [April 14, 2013]
|
|
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).
|
|
|
|
Version 1.7.0beta08 [April 18, 2013]
|
|
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.
|
|
|
|
Version 1.7.0beta09 [April 24, 2013]
|
|
Exposed PNG chunk types in png.h
|
|
Modified png_uint_32 macros/code to make as few assumptions as possible
|
|
Revised stack marking in arm/filter_neon.S and configure.ac
|
|
Ensure that NEON filter stuff is completely disabled when switched 'off'.
|
|
Previously the ARM NEON specific files were still built if the option
|
|
was switched 'off' as opposed to being explicitly disabled.
|
|
|
|
Version 1.7.0beta10 [April 24, 2013]
|
|
Attempt to fix the PNG_ARM_NEON configuration mess.
|
|
|
|
Version 1.7.0beta11 [April 26, 2013]
|
|
Test for 'arm*', not just 'arm' in the host_cpu configure variable.
|
|
|
|
Version 1.7.0beta12 [April 30, 2013]
|
|
Added png_app_warning for out-of-range unknown chunk index in
|
|
png_set_unknown_chunk_location().
|
|
Expanded manual paragraph about writing private chunks.
|
|
Avoid dereferencing NULL pointer possibly returned from
|
|
png_create_write_struct() (Andrew Church).
|
|
|
|
Version 1.7.0beta13 [May 12, 2013]
|
|
Revised contrib/pngminim/*/makefile to generate pnglibconf.h with the
|
|
right zlib header files.
|
|
Separated CPPFLAGS and CFLAGS in contrib/pngminim/*/makefile
|
|
Updated contrib/pngminus/pnm2png.c (Paul Stewart):
|
|
Check for EOF
|
|
Ignore "#" delimited comments in input file to pnm2png.c.
|
|
Fixed whitespace handling
|
|
Added a call to png_set_packing()
|
|
Initialize dimension values so if sscanf fails at least we have known
|
|
invalid values.
|
|
Calculate our own zlib windowBits when decoding rather than trusting the
|
|
CMF bytes in the PNG datastream.
|
|
Added an option to force maximum window size for inflating, which was
|
|
the behavior of libpng15 and earlier.
|
|
Added png-fix-itxt and png-fix-too-far-back to the built programs and
|
|
removed warnings from the source code and timepng that are revealed as
|
|
a result.
|
|
Detect wrong libpng versions linked to png-fix-too-far-back, which currently
|
|
only works with libpng versions that can be made to reliably fail when
|
|
the deflate data contains an out-of-window reference. This means only
|
|
1.6 and later.
|
|
Attempt to detect configuration issues with png-fix-too-far-back, which
|
|
requires both the correct libpng and the correct zlib to function
|
|
correctly.
|
|
Check ZLIB_VERNUM for mismatches, enclose #error in quotes
|
|
Added information in the documentation about problems with and fixes for
|
|
the bad CRC and bad iTXt chunk situations.
|
|
|
|
Version 1.7.0beta14 [June 8, 2013]
|
|
Removed a redundant test in png_set_IHDR().
|
|
Added set(CMAKE_CONFIGURATION_TYPES ...) to CMakeLists.txt (Andrew Hundt)
|
|
Deleted set(CMAKE_BUILD_TYPE) block from CMakeLists.txt
|
|
Enclose the prototypes for the simplified write API in #ifdef STDIO/#endif
|
|
Make ARM NEON support work at compile time (not just configure time).
|
|
This moves the test on __ARM_NEON__ into pngconf.h to avoid issues when
|
|
using a compiler that compiles for multiple architectures at one time.
|
|
Removed PNG_FILTER_OPTIMIZATIONS and PNG_ARM_NEON_SUPPORTED from
|
|
pnglibconf.h, allowing more of the decisions to be made internally
|
|
(pngpriv.h) during the compile. Without this, symbol prefixing is broken
|
|
under certain circumstances on ARM platforms. Now only the API parts of
|
|
the optimizations ('check' vs 'api') are exposed in the public header files
|
|
except that the new setting PNG_ARM_NEON_OPT documents how libpng makes the
|
|
decision about whether or not to use the optimizations.
|
|
Protect symbol prefixing against CC/CPPFLAGS/CFLAGS useage.
|
|
Previous iOS/Xcode fixes for the ARM NEON optimizations moved the test
|
|
on __ARM_NEON__ from configure time to compile time. This breaks symbol
|
|
prefixing because the definition of the special png_init_filter_functions
|
|
call was hidden at configure time if the relevant compiler arguments are
|
|
passed in CFLAGS as opposed to CC. This change attempts to avoid all
|
|
the confusion that would result by declaring the init function even when
|
|
it is not used, so that it will always get prefixed.
|
|
|
|
Version 1.7.0beta15 [June 18, 2013]
|
|
Revised libpng.3 so that "doclifter" can process it.
|
|
|
|
Version 1.7.0beta16 [July 5, 2013]
|
|
Revised example.c to illustrate use of PNG_DEFAULT_sRGB and PNG_GAMMA_MAC_18
|
|
as parameters for png_set_gamma(). These have been available since
|
|
libpng-1.5.4.
|
|
Renamed contrib/tools/png-fix-too-far-back.c to pngfix.c and revised it
|
|
to check all compressed chunks known to libpng.
|
|
Updated documentation to show default behavior of benign errors correctly.
|
|
Added perfect hash code generation for lists of PNG chunks. This is
|
|
a work in progress; checked in for use in pngfix.c
|
|
Ported ARM no-read patch from libpng16.
|
|
Ported pngfix.c patches from libpng16.
|
|
|
|
Version 1.7.0beta17 [August 21, 2013]
|
|
Revised manual about changes in iTXt chunk handling made in libpng-1.6.0.
|
|
Added "/* SAFE */" comments in pngrutil.c and pngrtran.c where warnings
|
|
may be erroneously issued by code-checking applications.
|
|
Added information about png_set_options() to the manual.
|
|
Delay calling png_init_filter_functions() until a row with nonzero filter
|
|
is found.
|
|
|
|
Version 1.7.0beta18 [September 16, 2013]
|
|
Fixed inconsistent conditional compilation of png_chunk_unknown_handling()
|
|
prototype, definition, and usage. Made it depend on
|
|
PNG_HANDLE_AS_UNKNOWN_SUPPORTED everywhere.
|
|
|
|
Version 1.7.0beta19 [September 30, 2013]
|
|
Reverted the change to unknown handling #defines; the change breaks 'NOREAD'
|
|
builds.
|
|
Fixed default behavior of ARM_NEON_API. If the ARM NEON API option is
|
|
compiled without the CHECK option it defaulted to on, not off.
|
|
Catch up with recent libpng16 changes; unknown handling and spelling
|
|
corrections
|
|
Avoid up-cast warnings in pngvalid.c. On ARM the alignment requirements of
|
|
png_modifier are greater than that of png_store and as a consequence
|
|
compilation of pngvalid.c results in a warning about increased alignment
|
|
requirements because of the bare cast to (png_modifier*). The code is
|
|
safe, because the pointer is known to point to a stack allocated
|
|
png_modifier, but this change avoids the warning.
|
|
Fixed some grammatical changes and updated the png chunks list.
|
|
|
|
Version 1.7.0beta20 [October 13, 2013]
|
|
Made changes for compatibility with automake 1.14:
|
|
1) Added the 'compile' program to the list of programs that must be cleaned
|
|
in autogen.sh
|
|
2) Added 'subdir-objects' which causes .c files in sub-directories to be
|
|
compiled such that the corresponding .o files are also in the
|
|
sub-directory. This is because automake 1.14 warns that the
|
|
current behavior of compiling to the top level directory may be removed
|
|
in the future.
|
|
3) Updated dependencies on pnglibconf.h to match the new .o locations and
|
|
added all the files in contrib/libtests and contrib/tools that depend
|
|
on pnglibconf.h
|
|
4) Added 'BUILD_SOURCES = pnglibconf.h'; this is the automake recommended
|
|
way of handling the dependencies of sources that are machine generated;
|
|
unfortunately it only works if the user does 'make all' or 'make check',
|
|
so the dependencies (3) are still required.
|
|
Cleaned up (char*) casts of zlib messages. The latest version of the Intel C
|
|
compiler complains about casting a string literal as (char*), so copied the
|
|
treatment of z_const from the library code into pngfix.c
|
|
Simplified error message code in pngunknown. The simplification has the
|
|
useful side effect of avoiding a bogus warning generated by the latest
|
|
version of the Intel C compiler (it objects to
|
|
condition ? string-literal : string-literal).
|
|
Make autogen.sh work with automake 1.13 as well as 1.14. Do this by always
|
|
removing the 1.14 'compile' script but never checking for it.
|
|
|
|
Version 1.7.0beta21 [November 2, 2013]
|
|
Added ARMv8 support (James Yu <james.yu at linaro.org>). Added file
|
|
arm/filter_neon_intrinsics.c; enable with -mfpu=neon.
|
|
Revised pngvalid to generate size images with as many filters as it can
|
|
manage, limited by the number of rows.
|
|
Cleaned up ARM NEON compilation handling. The tests are now in pngpriv.h
|
|
and detect the broken GCC compilers.
|
|
Allow clang derived from older GCC versions to use ARM intrinsics. This
|
|
causes all clang builds that use -mfpu=neon to use the intrinsics code,
|
|
not the assembler code. This has only been tested on iOS 7. It may be
|
|
necessary to exclude some earlier clang versions but this seems unlikely.
|
|
Changed NEON implementation selection mechanism. This allows assembler
|
|
or intrinsics to be turned on at compile time during the build by defining
|
|
PNG_ARM_NEON_IMPLEMENTATION to the correct value (2 or 1). This macro
|
|
is undefined by default and the build type is selected in pngpriv.h.
|
|
|
|
Version 1.7.0beta22 [November 7, 2013]
|
|
Fixed #include in filter_neon_intrinsics.c and ctype macros. The ctype char
|
|
checking macros take an unsigned char argument, not a signed char.
|
|
|
|
Version 1.7.0beta23 [November 24, 2013]
|
|
Changed #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED in pngpread.c to
|
|
#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED to be consistent with
|
|
what is in pngpriv.h.
|
|
Moved prototype for png_handle_unknown() in pngpriv.h outside of
|
|
the #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED/#endif block.
|
|
Added "-Wall" to CFLAGS in contrib/pngminim/*/makefile
|
|
Conditionally compile some unused functions reported by -Wall in
|
|
pngminim.
|
|
Fixed 'minimal' builds. Various obviously useful minimal configurations
|
|
don't build because of missing contrib/libtests test programs and
|
|
overly complex dependencies in scripts/pnglibconf.dfa. This change
|
|
adds contrib/conftest/*.dfa files that can be used in automatic build
|
|
scripts to ensure that these configurations continue to build.
|
|
Enabled WRITE_INVERT and WRITE_PACK in contrib/pngminim/encoder.
|
|
Fixed pngvalid 'fail' function declaration on the Intel C Compiler.
|
|
This reverts to the previous 'static' implementation and works round
|
|
the 'unused static function' warning by using PNG_UNUSED().
|
|
|
|
Version 1.7.0beta24 [December 15, 2013]
|
|
Removed or marked PNG_UNUSED some harmless "dead assignments" reported
|
|
by clang scan-build.
|
|
Changed tabs to 3 spaces in png_debug macros and changed '"%s"m'
|
|
to '"%s" m' to improve portability among compilers.
|
|
Changed png_free_default() to free() in pngtest.c
|
|
Tidied up pngfix inits and fixed pngtest no-write builds.
|
|
Bookkeeping: Moved functions around (no changes). Moved transform
|
|
function definitions before the place where they are called so that
|
|
they can be masde static. Move the intrapixel functions and the
|
|
grayscale palette builder out of the png?tran.c files. The latter
|
|
isn't a transform function and is no longer used internally, and the
|
|
former MNG specific functions are better placed in pngread/pngwrite.c
|
|
Made transform implementation functions static. This makes the internal
|
|
functions called by png_do_{read|write}_transformations static. On an
|
|
x86-64 DLL build (Gentoo Linux) this reduces the size of the text
|
|
segment of the DLL by 1208 bytes, about 0.6%. It also simplifies
|
|
maintenance by removing the declarations from pngpriv.h and allowing
|
|
easier changes to the internal interfaces.
|
|
Handle zero-length PLTE chunk or NULL palette with png_error()
|
|
instead of png_chunk_report(), which by default issues a warning
|
|
rather than an error, leading to later reading from a NULL pointer
|
|
(png_ptr->palette) in png_do_expand_palette(). This is CVE-2013-6954
|
|
and VU#650142. Libpng-1.6.1 through 1.6.7 and libpng-1.7.0beta03
|
|
through 1.7.0beta23 are vulnerable. Libpng-1.6.0 and earlier do not
|
|
have the bug.
|
|
|
|
Version 1.7.0beta25 [December 26, 2013]
|
|
Merged files with version 1.6.8 that have not changed since then.
|
|
Rebuilt configure scripts with automake-1.14.1 and autoconf-2.69
|
|
|
|
Version 1.7.0beta26 [January 1, 2014]
|
|
Added libpng 1.5 checks to pngvalid.c
|
|
Merged with 1.5 and 1.6 changes to create a single pngvalid.c
|
|
Added dSIG to chunk list in png.h
|
|
Removed #error macro from contrib/tools/pngfix.c (Thomas Klausner).
|
|
Merged pngrio.c, pngtrans.c, and pngwio.c with libpng-1.6.9
|
|
Fixed test programs for interlace options. Made pngvalid.c and
|
|
pngtest.c work correctly when READ_INTERLACING and/or WRITE_INTERLACING
|
|
are switched off.
|
|
Changed pngvalid.c to support libpng 1.5, which does not support
|
|
the PNG_MAXIMUM_INFLATE_WINDOW option, so #define it out when
|
|
appropriate in pngvalid.c
|
|
Allow unversioned links created on install to be disabled in configure.
|
|
In configure builds 'make install' changes/adds links like png.h
|
|
and libpng.a to point to the newly installed, versioned, files (e.g.
|
|
libpng17/png.h and libpng17.a). Three new configure options and some
|
|
rearrangement of Makefile.am allow creation of these links to be disabled.
|
|
|
|
Version 1.7.0beta27 [January 10, 2014]
|
|
Removed potentially misleading warning from png_check_IHDR().
|
|
|
|
Version 1.7.0beta28 [January 20, 2014]
|
|
Updated scripts/makefile.* to use CPPFLAGS (Cosmin).
|
|
Added clang attribute support (Cosmin).
|
|
|
|
Version 1.7.0beta29 [January 30, 2014]
|
|
Quiet an uninitialized memory warning from VS2013 in png_get_png().
|
|
|
|
Version 1.7.0beta30 [February 1, 2014]
|
|
Fixed a large number of instances where PNGCBAPI was omitted from
|
|
function definitions.
|
|
Added pngimage test program for png_read_png and png_write_png. This
|
|
is a work-in-progress; no tests are run automatically at present and
|
|
the program by virtue of exhaustively testing all the transforms is
|
|
very slow.
|
|
|
|
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
|