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[devel] Changed several "#ifdef PNG_UNKNOWN_CHUNK_SUPPORTED" to

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to "#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED", to make the png_set_keep
    mechanism available for ignoring known chunks even when not saving
    unknown chunks.
This commit is contained in:
Glenn Randers-Pehrson 2009-06-13 10:05:05 -05:00
parent b5444a1779
commit 7824a70c1d
7 changed files with 67 additions and 51 deletions
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14
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.4.0beta63 - June 5, 2009
Libpng 1.4.0beta63 - June 12, 2009
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.
@ -470,10 +470,16 @@ version 1.4.0beta62 [June 2, 2009]
Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h
and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h
Reformatted several remaining "else statement" into two lines.
Added a section about using png_get_io_ptr() in configure scripts to detect
the presence of libpng.
Added a section to the libpng documentation about using png_get_io_ptr()
in configure scripts to detect the presence of libpng.
version 1.4.0beta63 [June 5, 2009]
version 1.4.0beta63 [June 12, 2009]
Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR()
multiple times and to specify the sample order in the tRNS chunk,
because the ISO PNG specification has a typo in the tRNS table.
Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to
PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism
available for ignoring known chunks even when not saving unknown chunks.
version 1.4.0betaN [future]
Build shared libraries with -lz and sometimes -lm.

5
CHANGES
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@ -2150,10 +2150,13 @@ version 1.4.0beta62 [June 2, 2009]
Added a section to the libpng documentation about using png_get_io_ptr()
in configure scripts to detect the presence of libpng.
version 1.4.0beta63 [June 8, 2009]
version 1.4.0beta63 [June 12, 2009]
Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR()
multiple times and to specify the sample order in the tRNS chunk,
because the ISO PNG specification has a typo in the tRNS table.
Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to
PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism
available for ignoring known chunks even when not saving unknown chunks.
version 1.4.0betaN [future]
Build shared libraries with -lz and sometimes -lm.

8
png.c
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@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Last changed in libpng 1.4.0 [June 5, 2009]
* Last changed in libpng 1.4.0 [June 12, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -557,7 +557,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)
png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
if (png_ptr->num_chunk_list)
{
png_free(png_ptr, png_ptr->chunk_list);
@ -649,13 +649,13 @@ png_get_copyright(png_structp png_ptr)
#else
#ifdef __STDC__
return ((png_charp) PNG_STRING_NEWLINE \
"libpng version x 1.4.0beta63 - June 5, 2009" PNG_STRING_NEWLINE \
"libpng version x 1.4.0beta63 - June 12, 2009" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2009 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE);
#else
return ((png_charp) "libpng version 1.4.0beta63 - June 5, 2009\
return ((png_charp) "libpng version 1.4.0beta63 - June 12, 2009\
Copyright (c) 1998-2009 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");

24
png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.4.0beta63 - June 5, 2009
* libpng version 1.4.0beta63 - June 12, 2009
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -9,7 +9,7 @@
* Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.4.0beta63 - June 5, 2009: Glenn
* libpng versions 0.97, January 1998, through 1.4.0beta63 - June 12, 2009: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@ -120,7 +120,7 @@
* 1.2.10rc1-2 13 10210 12.so.0.10[.0]
* 1.2.10 13 10210 12.so.0.10[.0]
* 1.4.0beta1-5 14 10400 14.so.0.0[.0]
* 1.2.11beta1-4 13 10210 12.so.0.11[.0]
* 1.2.11beta1-4 13 10211 12.so.0.11[.0]
* 1.4.0beta7-8 14 10400 14.so.0.0[.0]
* 1.2.11 13 10211 12.so.0.11[.0]
* 1.2.12 13 10212 12.so.0.12[.0]
@ -157,7 +157,7 @@
* If you modify libpng you may insert additional notices immediately following
* this sentence.
*
* libpng versions 1.2.6, August 15, 2004, through 1.4.0beta63, June 5, 2009, are
* libpng versions 1.2.6, August 15, 2004, through 1.4.0beta63, June 12, 2009, are
* Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individual added to the list of Contributing Authors:
@ -333,7 +333,7 @@
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.4.0beta63"
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.4.0beta63 - June 5, 2009\n"
" libpng version 1.4.0beta63 - June 12, 2009\n"
#define PNG_LIBPNG_VER_SONUM 14
#define PNG_LIBPNG_VER_DLLNUM 14
@ -1263,7 +1263,7 @@ struct png_struct_def
png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
int num_chunk_list;
png_bytep chunk_list;
#endif
@ -2332,8 +2332,8 @@ extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr,
#endif
#endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
/* provide a list of chunks and how they are to be handled, if the built-in
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
/* Provide a list of chunks and how they are to be handled, if the built-in
handling or default unknown chunk handling is not desired. Any chunks not
listed will be handled in the default manner. The IHDR and IEND chunks
must not be listed.
@ -2344,6 +2344,10 @@ extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr,
*/
extern PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp
png_ptr, int keep, png_bytep chunk_list, int num_chunks));
PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep
chunk_name));
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
extern PNG_EXPORT(void, png_set_unknown_chunks) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns));
extern PNG_EXPORT(void, png_set_unknown_chunk_location)
@ -2351,10 +2355,6 @@ extern PNG_EXPORT(void, png_set_unknown_chunk_location)
extern PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_structp
png_ptr, png_infop info_ptr, png_unknown_chunkpp entries));
#endif
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep
chunk_name));
#endif
/* Png_free_data() will turn off the "valid" flag for anything it frees.
If you need to turn it off for a chunk that your application has freed,

12
pngconf.h
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@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng version 1.4.0beta63 - June 5, 2009
* libpng version 1.4.0beta63 - June 12, 2009
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -853,9 +853,6 @@
# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
# define PNG_UNKNOWN_CHUNKS_SUPPORTED
# endif
# ifndef PNG_NO_HANDLE_AS_UNKNOWN
# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
# endif
#endif
#if !defined(PNG_NO_READ_USER_CHUNKS) && \
defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
@ -868,6 +865,11 @@
# undef PNG_NO_HANDLE_AS_UNKNOWN
# endif
#endif
#ifndef PNG_NO_HANDLE_AS_UNKNOWN
# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
# endif
#endif
#ifndef PNG_NO_READ_OPT_PLTE
# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
#endif /* optional PLTE chunk in RGB and RGBA images */
@ -995,12 +997,12 @@
# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
# define PNG_UNKNOWN_CHUNKS_SUPPORTED
# endif
#endif
#ifndef PNG_NO_HANDLE_AS_UNKNOWN
# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
# endif
#endif
#endif
#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
defined(PNG_WRITE_zTXt_SUPPORTED)
# define PNG_WRITE_TEXT_SUPPORTED

13
pngrutil.c
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@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.4.0 [June 5, 2009]
* Last changed in libpng 1.4.0 [June 12, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -2316,7 +2316,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (!(png_ptr->chunk_name[0] & 0x20))
{
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
PNG_HANDLE_CHUNK_ALWAYS
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
@ -2328,8 +2328,11 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
if ((png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS) ||
(png_ptr->read_user_chunk_fn != NULL))
if ((png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
|| (png_ptr->read_user_chunk_fn != NULL)
#endif
)
{
#ifdef PNG_MAX_MALLOC_64K
if (length > (png_uint_32)65535L)
@ -2363,8 +2366,10 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (ret == 0)
{
if (!(png_ptr->chunk_name[0] & 0x20))
#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
PNG_HANDLE_CHUNK_ALWAYS)
#endif
png_chunk_error(png_ptr, "unknown critical chunk");
png_set_unknown_chunks(png_ptr, info_ptr,
&png_ptr->unknown_chunk, 1);

4
pngset.c
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@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Last changed in libpng 1.4.0 [June 5, 2009]
* Last changed in libpng 1.4.0 [June 12, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -1009,7 +1009,7 @@ png_set_sPLT(png_structp png_ptr,
}
#endif /* PNG_sPLT_SUPPORTED */
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
void PNGAPI
png_set_unknown_chunks(png_structp png_ptr,
png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)