Module Name:	pkgsrc
Committed By:	fredb
Date:		Wed Mar 13 17:43:39 UTC 2002

Modified Files:
	pkgsrc/graphics/png: Makefile PLIST buildlink.mk distinfo
	pkgsrc/graphics/png/patches: patch-aa

Log Message:
Update png to 1.2.1. Includes an ABI change and a concommittent bump in the
shared library version, and in the dependendency information for hundreds of
other packages. [Update to png itself was supplied by Thomas Wizner.]

Relevant changes since 1.0.12, extracted from the "CHANGES" file:

  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.
  Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
  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.
  Check for missing profile length field in iCCP chunk and free chunk_data
     in case of truncated iCCP chunk.
  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
  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
  Revised contrib/gregbook
  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
  Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c
  Removed restriction that do_invert_mono only operate on 1-bit opaque files
  Changed a png_warning() to png_debug() in pnggccrd.c
  Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
  Include background_1 in png_struct regardless of gamma support.
  Revised example.c to provide more details about using row_callback().
  Added type cast to each NULL appearing in a function call, except for
    WINCE functions.
  Removed type casts from all NULLs.
  Simplified png_create_struct_2().
  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.
  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)
  Added a pop/push operation to pngvcrd.c, to preserve Eflag.
  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.


To generate a diff of this commit:
cvs rdiff -r1.38 -r1.39 pkgsrc/graphics/png/Makefile
cvs rdiff -r1.1 -r1.2 pkgsrc/graphics/png/PLIST
cvs rdiff -r1.9 -r1.10 pkgsrc/graphics/png/buildlink.mk
cvs rdiff -r1.5 -r1.6 pkgsrc/graphics/png/distinfo
cvs rdiff -r1.17 -r1.18 pkgsrc/graphics/png/patches/patch-aa

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.