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src/Source/LibPNG/CHANGES  view on Meta::CPAN

  Added checking the results of many instances of png_malloc() for NULL

Version 1.0.11beta4 [April 20, 2001]
  Undid the changes from version 1.0.11beta3.  Added a check for NULL return
    from user's malloc_fn().
  Removed some useless type casts of the NULL pointer.
  Added makefile.netbsd

Version 1.0.11 [April 27, 2001]
  Revised makefile.netbsd

Version 1.0.12beta1 [May 14, 2001]
  Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot)
  Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h
  Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings.
  Eliminated the png_error about apps using png_read|write_init().  Instead,
    libpng will reallocate the png_struct and info_struct if they are too small.
    This retains future binary compatibility for old applications written for
    libpng-0.88 and earlier.

Version 1.2.0beta1 [May 6, 2001]
  Bumped DLLNUM to 2.
  Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
    by default.
  Added runtime selection of MMX features.
  Added png_set_strip_error_numbers function and related macros.

Version 1.2.0beta2 [May 7, 2001]
  Finished merging 1.2.0beta1 with version 1.0.11
  Added a check for attempts to read or write PLTE in grayscale PNG datastreams.

Version 1.2.0beta3 [May 17, 2001]
  Enabled user memory function by default.
  Modified png_create_struct so it passes user mem_ptr to user memory allocator.
  Increased png_mng_features flag from png_byte to png_uint_32.
  Bumped shared-library (so-number) and dll-number to 3.

Version 1.2.0beta4 [June 23, 2001]
  Check for missing profile length field in iCCP chunk and free chunk_data
     in case of truncated iCCP chunk.
  Bumped shared-library number to 3 in makefile.sgi and makefile.sggcc
  Bumped dll-number from 2 to 3 in makefile.cygwin
  Revised contrib/gregbook/rpng*-x.c to avoid a memory leak and to exit cleanly
     if user attempts to run it on an 8-bit display.
  Updated contrib/gregbook
  Use png_malloc instead of png_zalloc to allocate palette in pngset.c
  Updated makefile.ibmc
  Added some typecasts to eliminate gcc 3.0 warnings.  Changed prototypes
     of png_write_oFFS width and height from png_uint_32 to png_int_32.
  Updated example.c
  Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c

Version 1.2.0beta5 [August 8, 2001]
  Revised contrib/gregbook
  Revised makefile.gcmmx
  Revised pnggccrd.c to conditionally compile some thread-unsafe code only
     when PNG_THREAD_UNSAFE_OK is defined.
  Added tests to prevent pngwutil.c from writing a bKGD or tRNS chunk with
     value exceeding 2^bit_depth-1
  Revised makefile.sgi and makefile.sggcc
  Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c
  Removed restriction that do_invert_mono only operate on 1-bit opaque files

Version 1.2.0 [September 1, 2001]
  Changed a png_warning() to png_debug() in pnggccrd.c
  Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().

Version 1.2.1beta1 [October 19, 2001]
  Revised makefile.std in contrib/pngminus
  Include background_1 in png_struct regardless of gamma support.
  Revised makefile.netbsd and makefile.macosx, added makefile.darwin.
  Revised example.c to provide more details about using row_callback().

Version 1.2.1beta2 [October 25, 2001]
  Added type cast to each NULL appearing in a function call, except for
    WINCE functions.
  Added makefile.so9.

Version 1.2.1beta3 [October 27, 2001]
  Removed type casts from all NULLs.
  Simplified png_create_struct_2().

Version 1.2.1beta4 [November 7, 2001]
  Revised png_create_info_struct() and png_creat_struct_2().
  Added error message if png_write_info() was omitted.
  Type cast NULLs appearing in function calls when _NO_PROTO or
    PNG_TYPECAST_NULL is defined.

Version 1.2.1rc1 [November 24, 2001]
  Type cast NULLs appearing in function calls except when PNG_NO_TYPECAST_NULL
    is defined.
  Changed typecast of "size" argument to png_size_t in pngmem.c calls to
    the user malloc_fn, to agree with the prototype in png.h
  Added a pop/push operation to pnggccrd.c, to preserve Eflag (Maxim Sobolev)
  Updated makefile.sgi to recognize LIBPATH and INCPATH.
  Updated various makefiles so "make clean" does not remove previous major
    version of the shared library.

Version 1.2.1rc2 [December 4, 2001]
  Always allocate 256-entry internal palette, hist, and trans arrays, to
    avoid out-of-bounds memory reference caused by invalid PNG datastreams.
  Added a check for prefix_length > data_length in iCCP chunk handler.

Version 1.2.1 [December 7, 2001]
  None.

Version 1.2.2beta1 [February 22, 2002]
  Fixed a bug with reading the length of iCCP profiles (Larry Reeves).
  Revised makefile.linux, makefile.gcmmx, and makefile.sgi to generate
    libpng.a, libpng12.so (not libpng.so.3), and libpng12/png.h
  Revised makefile.darwin to remove "-undefined suppress" option.
  Added checks for gamma and chromaticity values over 21474.83, which exceed
    the limit for PNG unsigned 32-bit integers when encoded.
  Revised calls to png_create_read_struct() and png_create_write_struct()
    for simpler debugging.
  Revised png_zalloc() so zlib handles errors (uses PNG_FLAG_MALLOC_NULL_MEM_OK)

Version 1.2.2beta2 [February 23, 2002]
  Check chunk_length and idat_size for invalid (over PNG_MAX_UINT) lengths.
  Check for invalid image dimensions in png_get_IHDR.
  Added missing "fi;" in the install target of the SGI makefiles.

src/Source/LibPNG/CHANGES  view on Meta::CPAN

  Updated scripts/makefile.* to use CPPFLAGS (Cosmin).
  Added clang attribute support (Cosmin).

Version 1.6.9rc01 [January 28, 2014]
  No changes.

Version 1.6.9rc02 [January 30, 2014]
  Quiet an uninitialized memory warning from VC2013 in png_get_png().

Version 1.6.9 [February 6, 2014]

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
    function definitions.
  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
    chunk_benign_error).
  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).

Version 1.6.10rc02 [February 28, 2014]
  Removed unreachable return statement after png_chunk_error()
    in pngrutil.c

Version 1.6.10rc03 [March 4, 2014]
  Un-deprecated png_data_freer().

Version 1.6.10 [March 6, 2014]
  No changes.

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
    macro (Cosmin).

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