the PNG file format in application programs. Most users will not
to modify it more. The library was coded for both users. All
keeping the code easy to understand. Currently, this library
only supports C. Support for other languages is being considered.
| 2014-11-21 00:49:11 by Thomas Klausner | Files touched by this commit (2) | |
Update to 1.6.15:
Version 1.6.15beta01 [October 29, 2014]
Changed "if (!x)" to "if (x == 0)" and "if (x)" \
to "if (x != 0)"
Added missing "ptr = NULL" after some instances of png_free().
Version 1.6.15beta02 [November 1, 2014]
Changed remaining "if (!x)" to "if (x == 0)" and "if \
(x)" to "if (x != 0)"
Version 1.6.15beta03 [November 3, 2014]
Added PNG_USE_ARM_NEON configuration flag (Marcin Juszkiewicz).
Version 1.6.15beta04 [November 4, 2014]
Removed new PNG_USE_ARM_NEON configuration flag and made a one-line
revision to configure.ac to support ARM on aarch64 instead (John Bowler).
Version 1.6.15beta05 [November 5, 2014]
Use png_get_libpng_ver(NULL) instead of PNG_LIBPNG_VER_STRING in
example.c, pngtest.c, and applications in the contrib directory.
Avoid out-of-bounds memory access in png_user_version_check().
Simplified and future-proofed png_user_version_check().
Fixed GCC unsigned int->float warnings. Various versions of GCC
seem to generate warnings when an unsigned value is implicitly
converted to double. This is probably a GCC bug but this change
avoids the issue by explicitly converting to (int) where safe.
Free all allocated memory in pngimage. The file buffer cache was left
allocated at the end of the program, harmless but it causes memory
leak reports from clang.
Fixed array size calculations to avoid warnings. At various points
in the code the number of elements in an array is calculated using
sizeof. This generates a compile time constant of type (size_t) which
is then typically assigned to an (unsigned int) or (int). Some versions
of GCC on 64-bit systems warn about the apparent narrowing, even though
the same compiler does apparently generate the correct, in-range,
numeric constant. This adds appropriate, safe, casts to make the
warnings go away.
Version 1.6.15beta06 [November 6, 2014]
Reverted use png_get_libpng_ver(NULL) instead of PNG_LIBPNG_VER_STRING
in the manual, example.c, pngtest.c, and applications in the contrib
directory. It was incorrect advice.
Version 1.6.15beta07 [November 7, 2014]
Removed #ifdef PNG_16BIT_SUPPORTED/#endif around png_product2(); it is
needed by png_reciprocal2().
Added #ifdef PNG_16BIT_SUPPORTED/#endif around png_log16bit() and
Changed all "#endif /* PNG_FEATURE_SUPPORTED */" to "#endif /* \
Version 1.6.15beta08 [November 8, 2014]
More housecleaning in *.h
Version 1.6.15rc01 [November 13, 2014]
Version 1.6.15rc02 [November 14, 2014]
The macros passed in the command line to Borland make were ignored if
similarly-named macros were already defined in makefiles. This behavior
is different from POSIX make and other make programs. Surround the
macro definitions with ifndef guards (Cosmin).
Version 1.6.15rc03 [November 16, 2014]
Added "-D_CRT_SECURE_NO_WARNINGS" to CFLAGS in scripts/makefile.vcwin32.
Removed the obsolete $ARCH variable from scripts/makefile.darwin.
Version 1.6.15 [November 20, 2014]
| 2014-10-23 09:18:23 by Thomas Klausner | Files touched by this commit (2) | |
Update to 1.6.14:
Version 1.6.14beta01 [September 14, 2014]
Guard usage of png_ptr->options with #ifdef PNG_SET_OPTION_SUPPORTED.
Do not build contrib/tools/pngfix.c when PNG_SETJMP_NOT_SUPPORTED,
to allow "make" to complete without setjmp support (bug report by
Add "#include <setjmp.h>" to contrib/tools/pngfix.c (John Bowler)
Version 1.6.14beta02 [September 18, 2014]
Use nanosleep() instead of usleep() in contrib/gregbook/rpng2-x.c
because usleep() is deprecated.
Define usleep() in contrib/gregbook/rpng2-x.c if not already defined
in unistd.h and nanosleep() is not available; fixes error introduced
Disable floating point exception handling in pngvalid.c when
PNG_FLOATING_ARITHMETIC is not supported (bug report by "zootus
Version 1.6.14beta03 [September 19, 2014]
Define FE_DIVBYZERO, FE_INVALID, and FE_OVERFLOW in pngvalid.c if not
already defined. Revert floating point exception handling in pngvalid.c
to version 1.6.14beta01 behavior.
Version 1.6.14beta04 [September 27, 2014]
Fixed incorrect handling of the iTXt compression flag in pngrutil.c
(bug report by Shunsaku Hirata). Bug was introduced in libpng-1.6.0.
Version 1.6.14beta05 [October 1, 2014]
Added "option READ_iCCP enables READ_COMPRESSED_TEXT" to pnglibconf.dfa
Version 1.6.14beta06 [October 5, 2014]
Removed unused "text_len" parameter from private function \
Conditionally compile some code in png_deflate_claim(), when
PNG_WARNINGS_SUPPORTED and PNG_ERROR_TEXT_SUPPORTED are disabled.
Replaced repeated code in pngpread.c with PNG_PUSH_SAVE_BUFFER_IF_FULL.
Added "chunk iTXt enables TEXT" and "chunk zTXt enables TEXT"
Removed "option READ_COMPRESSED_TEXT enables READ_TEXT" from \
to make it possible to configure a libpng that supports iCCP but not TEXT.
Version 1.6.14beta07 [October 7, 2014]
Removed "option WRITE_COMPRESSED_TEXT enables WRITE_TEXT" from \
Only mark text chunks as written after successfully writing them.
Version 1.6.14rc01 [October 15, 2014]
Fixed some typos in comments.
Version 1.6.14rc02 [October 17, 2014]
Changed png_convert_to_rfc_1123() to png_convert_to_rfc_1123_buffer()
in the manual, to reflect the change made in libpng-1.6.0.
Updated README file to explain that direct access to the png_struct
and info_struct members has not been permitted since libpng-1.5.0.
Version 1.6.14 [October 23, 2014]
| 2014-10-09 16:07:17 by Thomas Klausner | Files touched by this commit (1163) |
Remove pkgviews: don't set PKG_INSTALLATION_TYPES in Makefiles.
| 2014-08-21 14:02:59 by Thomas Klausner | Files touched by this commit (2) | |
Update to 1.6.13:
Version 1.6.13beta01 [July 4, 2014]
Quieted -Wsign-compare and -Wclobber compiler warnings in
Added "(void) png_ptr;" where needed in contrib/gregbook to quiet
compiler complaints about unused pointers.
Split a long output string in contrib/gregbook/rpng2-x.c.
Added "PNG_SET_OPTION" requirement for sRGB chunk support to \
Needed for write-only support (John Bowler).
Changed "if defined(__ARM_NEON__)" to
"if (defined(__ARM_NEON__) || defined(__ARM_NEON))" (James Wu).
Fixed clang no-warning builds: png_digit was defined but never used.
Version 1.6.13beta02 [July 21, 2014]
Fixed an incorrect separator ("/" should be "\") in \
(bug report from Wolfgang S. Kechel). Bug was introduced in libpng-1.6.11.
Also fixed makefile.bc32, makefile.bor, makefile.msc, makefile.intel, and
Version 1.6.13beta03 [August 3, 2014]
Removed scripts/makefile.elf. It has not worked since libpng-1.5.0beta14
due to elimination of the PNG_FUNCTION_EXPORT and PNG_DATA_EXPORT
definitions from pngconf.h.
Ensure that CMakeLists.txt makes the target "lib" directory before making
symbolic link into it (SourceForge bug report #226 by Rolf Timmermans).
Version 1.6.13beta04 [August 8, 2014]
Added opinion that the ECCN (Export Control Classification Number) for
libpng is EAR99 to the README file.
Eliminated use of "$<" in makefile explicit rules, when copying
$PNGLIBCONF_H_PREBUILT. This does not work on some versions of make;
bug introduced in libpng version 1.6.11.
Version 1.6.13rc01 [August 14, 2014]
Made "ccopts" agree with "CFLAGS" in scripts/makefile.hp* \
Version 1.6.13 [August 21, 2014]
| 2014-06-12 10:59:19 by Thomas Klausner | Files touched by this commit (2) | |
Update to 1.6.12:
Version 1.6.12rc01 [June 6, 2014]
Relocated new code from 1.6.11beta06 in png.c to a point after the
declarations (Max Stepin).
Version 1.6.12rc02 [June 7, 2014]
Changed file permissions of contrib/tools/intgamma.sh,
test-driver, and compile from 0644 to 0755 (Cosmin).
Version 1.6.12rc03 [June 8, 2014]
Ensure "__has_attribute()" macro exists before trying to use it with
old clang compilers (MacPorts Ticket #43939).
Version 1.6.12 [June 12, 2014]
| 2014-06-05 18:33:55 by Thomas Klausner | Files touched by this commit (2) | |
Update to 1.6.11:
Version 1.6.11beta01 [March 17, 2014]
Use "if (value != 0)" instead of "if (value)" consistently.
Changed ZlibSrcDir from 1.2.5 to 1.2.8 in projects/vstudio.
Moved configuration information from the manual to the INSTALL file.
Version 1.6.11beta02 [April 6, 2014]
Removed #if/#else/#endif from inside two pow() calls in pngvalid.c because
they were handled improperly by Portland Group's PGI-14.1 - PGI-14.3
when using its "__builtin_pow()" function.
Silence 'unused parameter' build warnings (Cosmin Truta).
$(CP) is now used alongside $(RM_F). Also, use 'copy' instead of 'cp'
where applicable, and applied other minor makefile changes (Cosmin).
Don't warn about invalid dimensions exceeding user limits (Cosmin).
Allow an easy replacement of the default pre-built configuration
header with a custom header, via the make PNGLIBCONF_H_PREBUILT
Version 1.6.11beta03 [April 6, 2014]
Fixed a typo in pngrutil.c, introduced in libpng-1.5.6, that interferes
with "blocky" expansion of sub-8-bit interlaced PNG files (Eric Huss).
Optionally use __builtin_bswap16() in png_do_swap().
Version 1.6.11beta04 [April 19, 2014]
Made progressive reading of interlaced images consistent with the
behavior of the sequential reader and consistent with the manual, by
moving some code out of the PNG_READ_INTERLACING_SUPPORTED blocks. The
row_callback now receives the proper pass number and unexpanded rows, when
png_combine_row() isn't built or used, and png_set_interlace_handling()
is not called.
Allow PNG_sRGB_PROFILE_CHECKING = (-1) to mean no sRGB profile checking.
Version 1.6.11beta05 [April 26, 2014]
Do not reject ICC V2 profiles that lack padding (Kai-Uwe Behrmann).
Relocated closing bracket of the sRGB profile test loop to avoid getting
"Not recognizing known sRGB profile that has been edited" warning for
ICC V2 profiles that lack the MD5 signature in the profile header.
Version 1.6.11beta06 [May 19, 2014]
Added PNG_SKIP_sRGB_CHECK_PROFILE choice for png_set_option().
Version 1.6.11rc01 [May 27, 2014]
Version 1.6.11rc02 [June 3, 2014]
Test ZLIB_VERNUM instead of PNG_ZLIB_VERNUM in contrib/tools/pngfix.c
Version 1.6.11 [June 5, 2014]
| 2014-03-12 10:17:52 by Thomas Klausner | Files touched by this commit (2) | |
Update to 1.6.10:
Version 1.6.10rc02 [February 28, 2014]
Removed unreachable return statement after png_chunk_error()
Version 1.6.10rc03 [March 4, 2014]
Version 1.6.10 [March 6, 2014]
| 2014-02-27 16:07:09 by Thomas Klausner | Files touched by this commit (2) | |
Update to 1.6.10rc01:
This fixes CERT VU#684412 and CVE-2014-0333.
Version 1.6.10beta01 [February 9, 2014]
Backported changes from libpng-1.7.0beta30 and beta31:
Fixed a large number of instances where PNGCBAPI was omitted from
Added pngimage test program for png_read_png() and png_write_png()
with two new test scripts.
Removed dependence on !PNG_READ_EXPAND_SUPPORTED for calling
png_set_packing() in png_read_png().
Fixed combination of ~alpha with shift. On read invert alpha, processing
occurred after shift processing, which causes the final values to be
outside the range that should be produced by the shift. Reversing the
order on read makes the two transforms work together correctly and mirrors
the order used on write.
Do not read invalid sBIT chunks. Previously libpng only checked sBIT
values on write, so a malicious PNG writer could therefore cause
the read code to return an invalid sBIT chunk, which might lead to
application errors or crashes. Such chunks are now skipped (with
Make png_read_png() and png_write_png() prototypes in png.h depend
upon PNG_READ_SUPPORTED and PNG_WRITE_SUPPORTED.
Support builds with unsupported PNG_TRANSFORM_* values. All of the
PNG_TRANSFORM_* values are always defined in png.h and, because they
are used for both read and write in some cases, it is not reliable
to #if out ones that are totally unsupported. This change adds error
detection in png_read_image() and png_write_image() to do a
png_app_error() if the app requests something that cannot be done
and it adds corresponding code to pngimage.c to handle such options
by not attempting to test them.
Version 1.6.10beta02 [February 23, 2014]
Moved redefines of png_error(), png_warning(), png_chunk_error(),
and png_chunk_warning() from pngpriv.h to png.h to make them visible
to libpng-calling applications.
Moved OS dependent code from arm/arm_init.c, to allow the included
implementation of the ARM NEON discovery function to be set at
build-time and provide sample implementations from the current code in the
contrib/arm-neon subdirectory. The __linux__ code has also been changed to
compile and link on Android by using /proc/cpuinfo, and the old linux code
is in contrib/arm-neon/linux-auxv.c. The new code avoids POSIX and Linux
dependencies apart from opening /proc/cpuinfo and is C90 compliant.
Check for info_ptr == NULL early in png_read_end() so we don't need to
run all the png_handle_*() and depend on them to return if info_ptr == NULL.
This improves the performance of png_read_end(png_ptr, NULL) and makes
it more robust against future programming errors.
Check for __has_extension before using it in pngconf.h, to
support older Clang versions (Jeremy Sequoia).
Treat CRC error handling with png_set_crc_action(), instead of with
png_set_benign_errors(), which has been the case since libpng-1.6.0beta18.
Use a user warning handler in contrib/gregbook/readpng2.c instead of default,
so warnings will be put on stderr even if libpng has CONSOLE_IO disabled.
Added png_ptr->process_mode = PNG_READ_IDAT_MODE in png_push_read_chunk
after recognizing the IDAT chunk, which avoids an infinite loop while
reading a datastream whose first IDAT chunk is of zero-length.
This fixes CERT VU#684412 and CVE-2014-0333.
Don't recognize known sRGB profiles as sRGB if they have been hacked,
but don't reject them and don't issue a copyright violation warning.
Version 1.6.10beta03 [February 25, 2014]
Moved some documentation from png.h to libpng.3 and libpng-manual.txt
Minor editing of contrib/arm-neon/README and contrib/examples/*.c
Version 1.6.10rc01 [February 27, 2014]
Fixed typos in the manual and in scripts/pnglibconf.dfa (CFLAGS -> CPPFLAGS
and PNG_USR_CONFIG -> PNG_USER_CONFIG).