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[master] Change some instances of PNG_READ_UNKNOWN_CHUNKS_SUPPORTED

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to PNG_HANDLE_AS_UNKNOWN to make it possible to build a libpng that can
use the png_set_keep_unknown_chunks() mechanism to ignore unused chunks
without having to save unknown chunks.
This commit is contained in:
Glenn Randers-Pehrson
2009-06-15 20:50:00 -05:00
parent b278e91338
commit bbe589da44
7 changed files with 75 additions and 63 deletions
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28
png.h
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@@ -1,6 +1,6 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.2.38beta01 - June 5, 2009
* libpng version 1.2.38beta01 - 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.)
@@ -8,7 +8,7 @@
* 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 1.2.38beta01 - June 5, 2009: Glenn
* libpng versions 0.97, January 1998, through 1.2.38beta01 - June 12, 2009: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@@ -260,7 +260,7 @@
* If you modify libpng you may insert additional notices immediately following
* this sentence.
*
* libpng versions 1.2.6, August 15, 2004, through 1.2.38beta01, June 5, 2009, are
* libpng versions 1.2.6, August 15, 2004, through 1.2.38beta01, June 12, 2009, are
* Copyright (c) 2004, 2006-2009 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:
@@ -372,7 +372,7 @@
* Y2K compliance in libpng:
* =========================
*
* June 5, 2009
* June 12, 2009
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
@@ -436,7 +436,7 @@
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.2.38beta01"
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.2.38beta01 - June 5, 2009\n"
" libpng version 1.2.38beta01 - June 12, 2009\n"
#define PNG_LIBPNG_VER_SONUM 0
#define PNG_LIBPNG_VER_DLLNUM 13
@@ -456,7 +456,7 @@
#define PNG_LIBPNG_BUILD_RC 3
#define PNG_LIBPNG_BUILD_STABLE 4
#define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7
/* Release-Specific Flags */
#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with
PNG_LIBPNG_BUILD_STABLE only */
@@ -487,12 +487,12 @@
/* Ref MSDN: Private as priority over Special
* VS_FF_PRIVATEBUILD File *was not* built using standard release
* procedures. If this value is given, the StringFileInfo block must
* contain a PrivateBuild string.
* contain a PrivateBuild string.
*
* VS_FF_SPECIALBUILD File *was* built by the original company using
* standard release procedures but is a variation of the standard
* file of the same version number. If this value is given, the
* StringFileInfo block must contain a SpecialBuild string.
* StringFileInfo block must contain a SpecialBuild string.
*/
#if defined(PNG_USER_PRIVATEBUILD)
@@ -1399,7 +1399,7 @@ struct png_struct_def
png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
int num_chunk_list;
png_bytep chunk_list;
#endif
@@ -2501,7 +2501,7 @@ 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)
#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
@@ -2513,6 +2513,10 @@ 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)
@@ -2520,10 +2524,6 @@ 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,