buildlink2.mk files back into the main trunk. This provides sufficient
buildlink2 infrastructure to start merging other packages from the
buildlink2 branch that have already been converted to use the buildlink2
framework.
and png_set_text_2(), call for a minor version bump in the shared library.
Update "BUILDLINK_DEPENDS" to current level. Also make the shared library
versions visible in the top-level "Makefile", and add a top-level "test"
target to invoke "pngtest" in ${WRKSRC}.
The following is culled from the extensive "CHANGES" file, ommitting
all make system and doc changes, and some bug fixes for bugs that weren't
present in 1.2.1. See "CHANGES" for complete details:
Added setjmp() at the end of png_create_*_struct_2() in case user forgets
to put one in their application.
Exported png_zalloc(), png_zfree(), png_default_read(), png_default_write(),
png_default_flush(), and png_push_fill_buffer() and included them in
module definition files.
Revised prototype for png_default_flush()
Typos in *.def files (png_default_read|write -> png_default_read|write_data)
Once more restored png_zalloc and png_zfree to regular nonexported form.
Restored png_default_read|write_data, png_default_flush, png_read_fill_buffer
to nonexported form, but with PNGAPI, and removed them from module def files.
Removed "PNGAPI" from png_zalloc() and png_zfree() in png.c
Plugged various memory leaks; added png_malloc_warn() and png_set_text_2()
functions.
Plugged memory leak of png_ptr->current_text (Matt Holgate).
Check for buffer overflow before reading CRC in pngpread.c (Warwick Allison)
Plugged memory leak of row_buf in pngtest.c when there is a png_error().
Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data.
Changed png_warning() to png_error() when width is too large to process.
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.
. Added some never-to-be-executed code in pnggccrd.c to quiet compiler
warnings.
. Added a check for attempts to read or write PLTE in grayscale PNG
datastreams.
. 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 achieves future binary compatibility for old applications written for
libpng-0.88 and earlier. Expanded the warnings about incompatible library
and application.
. Modified png_create_struct so it passes user mem_ptr to user memory
allocator.
. Check for missing profile length field in iCCP chunk and free the chunk_data
in case of truncated iCCP chunk.
pkgsrc change: bump shared library major like it happened in libpng some
time ago -- our libtool'ified build didn't reflect this. Fixes pkg/12856
by Thor Simon. Note necessity of manual major/minor handling in Makefile,
to decrease chance that this will repeat in the future.
Changes since 1.0.10:
Added type casts on several png_malloc() calls (Dimitri Papadapoulos).
Removed a no-longer needed AIX work-around from pngconf.h
Changed several "//" single-line comments to C-style in pnggccrd.c
Removed PNGAPI from several functions whose prototypes did not have PNGAPI.
Updated scripts/pngos2.def
Added a check for NULL return from user's malloc_fn().
Removed some useless type casts of the NULL pointer.
Added makefile.netbsd [not used, since we're using libtool instead]
- Added contrib/pngsuite and contrib/pngminus (Willem van Schaik)
- Fixed a typo in the png_set_sRGB() function call in example.c (Jan Nijtmans)
- Further optimization and bugfix of pngvcrd.c
- Revised pngset.c so that it does not allocate or free memory in the user's
text_ptr structure.- Instead, it makes its own copy.
- Added code in pngwrite.c to free info_ptr->text[i].key to stop a memory leak.
- Created separate write_end_info_struct in pngtest.c for a more severe test.
- Moved PNG_FLAG_HAVE_CHUNK_HEADER, PNG_FLAG_BACKGROUND_IS_GRAY and
PNG_FLAG_WROTE_tIME from flags to mode.
- Added png_write_info_before_PLTE() function.
- Fixed some typecasting in contrib/gregbook/*.c
- Updated scripts/makevms.com (Martin Zinser)
- Moved png_get_header_version from png.h to png.c, to accomodate ansi2knr.
- Removed all global arrays (according to PNG_NO_GLOBAL_ARRAYS macro), to
accomodate making DLL's: Moved usr_png_ver from global variable to function
png_get_header_ver() in png.c.- Moved png_sig to png_sig_bytes in png.c and
eliminated use of png_sig in pngwutil.c.- Moved the various png_CHNK arrays
into local arrays.- Eliminated use of global png_pass arrays.- Declared the
png_CHNK and png_pass arrays to be "const".- Made the global arrays
available to applications when PNG_NO_GLOBAL_ARRAYS is not defined or
when PNG_USE_GLOBAL_ARRAYS is defined.- Made available to applications a
macro "PNG_USE_LOCAL_ARRAYS".
- Changed the PNG_sRGB_INTENT macros in png.h to be consistent with PNG-1.2.
- Change PNG_SRGB_INTENT to PNG_sRGB_INTENT in libpng.txt and libpng.3
- Added PNG_EXPORT_VAR macro to accommodate making DLL's.
- Refactored the inflate/deflate support to make adding new chunks with
trailing compressed parts easier in the future (Eric S. Raymond).
- Added iCCP, iTXt, sCAL, and sPLT support; added "lang", "lang_key", and
itxt_length" members to the png_text structure (Eric S. Raymond, Glenn R-P)
- Changed png_get_oFFs() and png_set_oFFs() to use signed rather than unsigned
offsets (Eric S. Raymond).
- Combined PNG_READ_cHNK_SUPPORTED and PNG_WRITE_cHNK_SUPPORTED macros into
PNG_cHNK_SUPPORTED and combined the three types of PNG_text_SUPPORTED
macros, leaving the separate macros also available.
- Removed comments on #endifs at the end of many short, non-nested #if-blocks.
- Changed makefile.solaris to issue a warning about potential problems when
the ucb "ld" is in the path ahead of the ccs "ld".
- Removed "- [date]" from the "synopsis" line in libpng.3 and libpngpf.3.
- Added code in pngwrite.c to work around a newly discovered zlib bug.
- Unknown chunk handling is now supported (Eric S. Raymond).
- Option to eliminate all floating point support was added.- Some new
fixed-point functions such as png_set_gAMA_fixed() were added.
- Added new type "png_fixed_point" for integers that hold float*100000 values
- Added many parentheses, e.g., "if (a && b & c)" becomes "if (a && (b & c))"
- Added png_handle_as_unknown()
- Added chunk_list and num_chunk_list members of png_ptr.
- Define png_get_int_32 when oFFs chunk is supported as well as when pCAL is.
- Added functions png_set_read_user_chunk_fn() and png_get_user_chunk_ptr()
for setting a callback function to handle unknown chunks and for
retrieving the associated user pointer (Glenn).
- Added png_free_data() function.
- Added high-level functions png_read_png() and png_write_png() (ESR).
- Renamed pngdll.mak to makefile.bd32
- Cosmetic changes in pngtest.c
- Fixed pngvcrd.c bug by pushing/popping registers in mmxsupport (Bruce Oberg)
- Revised makefile.gcmmx
- Fixed a bug in pngrtran.c that improperly expanded the background color.
- Return *num_text=0 from png_get_text() when appropriate, and fix
documentation of png_get_text() in libpng.txt/libpng.3.
- Added PNG_SETJMP_SUPPORTED, PNG_SETJMP_NOT_SUPPORTED, and PNG_ABORT() and
"png_jmpbuf()" macros to pngconf.h, to help people migrate to the new error
handler that's planned for the next libpng release, and changed example.c,
pngtest.c, and contrib programs to use this macro.
- Revised some of the DLL-export macros in pngconf.h (Greg Roelofs)
- Fixed some mistakes in the unused and undocumented INCH_CONVERSIONS functions
in pngget.c
- Updated makefile.linux and makefile.gccmmx to make directories conditionally.
- Increased precision of rgb_to_gray calculations from 8 to 15 bits and
added png_set_rgb_to_gray_fixed() function.
- Added makefile.bc32 (32-bit Borland C++, C mode)
- Updated references to the zlib home page, which has moved to
freesoftware.com.
- Corrected bugs in documentation regarding png_read_row() and png_write_row().
- Renamed makefile.borland,turboc3 back to makefile.bor,tc3 as in version
1.0.3, revised borland makefiles; added makefile.ibmvac3 and makefile.gcc
(Cosmin)
- Added makefile.sggcc (SGI IRIX with gcc)
(everything but ImageMagick, gs5, and xemacs20). The API hasn't changed
much, say the install instructions, but it isn't binary compatible--bump
shlib version to 1.0.
