[master] Change some instances of PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
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
parent
b278e91338
commit
bbe589da44
18
ANNOUNCE
18
ANNOUNCE
@ -1,5 +1,5 @@
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Libpng 1.2.38beta01 - June 5, 2009
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Libpng 1.2.38beta01 - June 12, 2009
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This is not intended to be a public release. It will be replaced
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within a few weeks by a public version or by another test version.
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@ -69,20 +69,26 @@ version 1.2.37rc01 [May 27, 2009]
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No changes.
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versions 1.2.37 and 1.0.45 [June 4, 2009]
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Reformatted several remaining "else statement;" and "if () statment;" into
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Reformatted several remaining "else statement;" and "if () statement;" into
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two lines.
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Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h
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and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h
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Added sections about the git repository and our coding style to the
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documentation (merged from libpng-1.4.0beta62)
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Added a section about using png_get_io_ptr() in configure scripts to detect
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the presence of libpng.
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Added a section in the documentation about using png_get_io_ptr() in
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configure scripts to detect the presence of libpng.
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versions 1.2.38 [June 5, 2009]
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version 1.2.38beta01 [June 12, 2009]
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Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR()
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multiple times and to specify the sample order in the tRNS chunk,
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because the ISO PNG specification has a typo in the tRNS table.
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Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to
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PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism
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available for ignoring known chunks even when not saving unknown chunks.
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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||||
|
||||
(subscription required; visit
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||||
(subscription required; visit
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https://lists.sourceforge.net/lists/listinfo/png-mng-implement
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to subscribe) or to glennrp at users.sourceforge.net
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5
CHANGES
5
CHANGES
@ -2403,10 +2403,13 @@ versions 1.2.37 and 1.0.45 [June 4, 2009]
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Added a section to the libpng documentation about using png_get_io_ptr()
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in configure scripts to detect the presence of libpng.
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versions 1.2.38 [June 8, 2009]
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versions 1.2.38beta01 [June 12, 2009]
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Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR()
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multiple times and to specify the sample order in the tRNS chunk,
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because the ISO PNG specification has a typo in the tRNS table.
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Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to
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PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism
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available for ignoring known chunks even when not saving unknown chunks.
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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(subscription required; visit
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||||
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28
png.h
28
png.h
@ -1,6 +1,6 @@
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/* png.h - header file for PNG reference library
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*
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* libpng version 1.2.38beta01 - June 5, 2009
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* libpng version 1.2.38beta01 - June 12, 2009
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* Copyright (c) 1998-2009 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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@ -8,7 +8,7 @@
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* Authors and maintainers:
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* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
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* libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
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* libpng versions 0.97, January 1998, through 1.2.38beta01 - June 5, 2009: Glenn
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* libpng versions 0.97, January 1998, through 1.2.38beta01 - June 12, 2009: Glenn
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* See also "Contributing Authors", below.
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*
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* Note about libpng version numbers:
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@ -260,7 +260,7 @@
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* If you modify libpng you may insert additional notices immediately following
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* this sentence.
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*
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* libpng versions 1.2.6, August 15, 2004, through 1.2.38beta01, June 5, 2009, are
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* libpng versions 1.2.6, August 15, 2004, through 1.2.38beta01, June 12, 2009, are
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* Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are
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* distributed according to the same disclaimer and license as libpng-1.2.5
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* with the following individual added to the list of Contributing Authors:
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@ -372,7 +372,7 @@
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* Y2K compliance in libpng:
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* =========================
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*
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* June 5, 2009
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* June 12, 2009
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*
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* Since the PNG Development group is an ad-hoc body, we can't make
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* an official declaration.
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@ -436,7 +436,7 @@
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/* Version information for png.h - this should match the version in png.c */
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#define PNG_LIBPNG_VER_STRING "1.2.38beta01"
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#define PNG_HEADER_VERSION_STRING \
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" libpng version 1.2.38beta01 - June 5, 2009\n"
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" libpng version 1.2.38beta01 - June 12, 2009\n"
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#define PNG_LIBPNG_VER_SONUM 0
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#define PNG_LIBPNG_VER_DLLNUM 13
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@ -456,7 +456,7 @@
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#define PNG_LIBPNG_BUILD_RC 3
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#define PNG_LIBPNG_BUILD_STABLE 4
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#define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7
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/* Release-Specific Flags */
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#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with
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PNG_LIBPNG_BUILD_STABLE only */
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@ -487,12 +487,12 @@
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/* Ref MSDN: Private as priority over Special
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* VS_FF_PRIVATEBUILD File *was not* built using standard release
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* procedures. If this value is given, the StringFileInfo block must
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* contain a PrivateBuild string.
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* contain a PrivateBuild string.
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*
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* VS_FF_SPECIALBUILD File *was* built by the original company using
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* standard release procedures but is a variation of the standard
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* file of the same version number. If this value is given, the
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* StringFileInfo block must contain a SpecialBuild string.
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* StringFileInfo block must contain a SpecialBuild string.
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*/
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#if defined(PNG_USER_PRIVATEBUILD)
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@ -1399,7 +1399,7 @@ struct png_struct_def
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png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
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#endif
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#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
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#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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int num_chunk_list;
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png_bytep chunk_list;
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#endif
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@ -2501,7 +2501,7 @@ extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr,
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#endif
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#endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */
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#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
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#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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/* provide a list of chunks and how they are to be handled, if the built-in
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handling or default unknown chunk handling is not desired. Any chunks not
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listed will be handled in the default manner. The IHDR and IEND chunks
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@ -2513,6 +2513,10 @@ extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr,
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*/
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extern PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp
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png_ptr, int keep, png_bytep chunk_list, int num_chunks));
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PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep
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chunk_name));
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#endif
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#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
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extern PNG_EXPORT(void, png_set_unknown_chunks) PNGARG((png_structp png_ptr,
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png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns));
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extern PNG_EXPORT(void, png_set_unknown_chunk_location)
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@ -2520,10 +2524,6 @@ extern PNG_EXPORT(void, png_set_unknown_chunk_location)
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extern PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_structp
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png_ptr, png_infop info_ptr, png_unknown_chunkpp entries));
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#endif
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#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep
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chunk_name));
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#endif
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/* Png_free_data() will turn off the "valid" flag for anything it frees.
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If you need to turn it off for a chunk that your application has freed,
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48
pngconf.h
48
pngconf.h
@ -1,7 +1,7 @@
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/* pngconf.h - machine configurable file for libpng
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*
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* libpng version 1.2.38beta01 - June 5, 2009
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* libpng version 1.2.38beta01 - June 12, 2009
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* For conditions of distribution and use, see copyright notice in png.h
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* Copyright (c) 1998-2009 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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@ -19,7 +19,7 @@
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#define PNG_1_2_X
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/*
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/*
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* PNG_USER_CONFIG has to be defined on the compiler command line. This
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* includes the resource compiler for Windows DLL configurations.
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*/
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@ -39,7 +39,7 @@
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/*
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* Added at libpng-1.2.8
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*
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*
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* If you create a private DLL you need to define in "pngusr.h" the followings:
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* #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
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* the DLL was built>
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@ -50,8 +50,8 @@
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* number and must match your private DLL name>
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* e.g. // private DLL "libpng13gx.dll"
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* #define PNG_USER_DLLFNAME_POSTFIX "gx"
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*
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* The following macros are also at your disposal if you want to complete the
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*
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* The following macros are also at your disposal if you want to complete the
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* DLL VERSIONINFO structure.
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* - PNG_USER_VERSIONINFO_COMMENTS
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* - PNG_USER_VERSIONINFO_COMPANYNAME
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@ -147,9 +147,9 @@
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* 'Cygwin' defines/defaults:
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* PNG_BUILD_DLL -- (ignored) building the dll
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* (no define) -- (ignored) building an application, linking to the dll
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* PNG_STATIC -- (ignored) building the static lib, or building an
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* PNG_STATIC -- (ignored) building the static lib, or building an
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* application that links to the static lib.
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* ALL_STATIC -- (ignored) building various static libs, or building an
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* ALL_STATIC -- (ignored) building various static libs, or building an
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* application that links to the static libs.
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* Thus,
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* a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
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@ -162,12 +162,12 @@
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* PNG_BUILD_DLL
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* PNG_STATIC
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* (nothing) == PNG_USE_DLL
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*
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*
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* CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
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* of auto-import in binutils, we no longer need to worry about
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* of auto-import in binutils, we no longer need to worry about
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* __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
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* we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
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* to __declspec() stuff. However, we DO need to worry about
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* to __declspec() stuff. However, we DO need to worry about
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* PNG_BUILD_DLL and PNG_STATIC because those change some defaults
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* such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
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*/
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@ -211,8 +211,8 @@
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# if !defined(PNG_DLL)
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# define PNG_DLL
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# endif
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# endif
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# endif
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# endif
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# endif
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# endif
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#endif
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@ -487,7 +487,7 @@
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* iTXt support was added. iTXt support was turned off by default through
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* libpng-1.2.x, to support old apps that malloc the png_text structure
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* instead of calling png_set_text() and letting libpng malloc it. It
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* was turned on by default in libpng-1.3.0.
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* was turned on by default in libpng-1.4.0.
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*/
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#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
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@ -741,7 +741,7 @@
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# define PNG_EASY_ACCESS_SUPPORTED
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#endif
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/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
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/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
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* and removed from version 1.2.20. The following will be removed
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* from libpng-1.4.0
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*/
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@ -945,9 +945,6 @@
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# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
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# define PNG_UNKNOWN_CHUNKS_SUPPORTED
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# endif
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# ifndef PNG_NO_HANDLE_AS_UNKNOWN
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# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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# endif
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#endif
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#if !defined(PNG_NO_READ_USER_CHUNKS) && \
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defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
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@ -960,6 +957,11 @@
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# undef PNG_NO_HANDLE_AS_UNKNOWN
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# endif
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#endif
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#ifndef PNG_NO_HANDLE_AS_UNKNOWN
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# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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# endif
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#endif
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#ifndef PNG_NO_READ_OPT_PLTE
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# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
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#endif /* optional PLTE chunk in RGB and RGBA images */
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@ -1087,10 +1089,10 @@
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# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
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# define PNG_UNKNOWN_CHUNKS_SUPPORTED
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# endif
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# ifndef PNG_NO_HANDLE_AS_UNKNOWN
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# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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# endif
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#endif
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#ifndef PNG_NO_HANDLE_AS_UNKNOWN
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# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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# endif
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#endif
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#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
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@ -1248,7 +1250,7 @@ typedef char FAR * FAR * FAR * png_charppp;
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#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
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/* SPC - Is this stuff deprecated? */
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/* It'll be removed as of libpng-1.3.0 - GR-P */
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/* It'll be removed as of libpng-1.4.0 - GR-P */
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/* libpng typedefs for types in zlib. If zlib changes
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* or another compression library is used, then change these.
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* Eliminates need to change all the source files.
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@ -1321,7 +1323,7 @@ typedef z_stream FAR * png_zstreamp;
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# define PNGAPI __cdecl
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# undef PNG_IMPEXP
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# define PNG_IMPEXP
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#endif
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#endif
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/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
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* you may get warnings regarding the linkage of png_zalloc and png_zfree.
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16
pngrtran.c
16
pngrtran.c
@ -1,7 +1,7 @@
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/* pngrtran.c - transforms the data in a row for PNG readers
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*
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* Last changed in libpng 1.2.37 [June 4, 2009]
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* Last changed in libpng 1.2.38 [June 12, 2009]
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* For conditions of distribution and use, see copyright notice in png.h
|
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* Copyright (c) 1998-2009 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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@ -1177,10 +1177,6 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
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{
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if (png_ptr->transformations & PNG_EXPAND_tRNS)
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info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
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#if 0 /* Removed from libpng-1.2.27 */
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else
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info_ptr->color_type |= PNG_COLOR_MASK_COLOR;
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#endif
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}
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if (info_ptr->bit_depth < 8)
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info_ptr->bit_depth = 8;
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@ -1374,12 +1370,12 @@ png_do_read_transformations(png_structp png_ptr)
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#endif
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/* From Andreas Dilger e-mail to png-implement, 26 March 1998:
|
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*
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*
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* In most cases, the "simple transparency" should be done prior to doing
|
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* gray-to-RGB, or you will have to test 3x as many bytes to check if a
|
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* pixel is transparent. You would also need to make sure that the
|
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* transparency information is upgraded to RGB.
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*
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*
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* To summarize, the current flow is:
|
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* - Gray + simple transparency -> compare 1 or 2 gray bytes and composite
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* with background "in place" if transparent,
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@ -4202,7 +4198,7 @@ png_build_gamma_table(png_structp png_ptr)
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png_ptr->gamma_16_table = (png_uint_16pp)png_malloc(png_ptr,
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(png_uint_32)(num * png_sizeof(png_uint_16p)));
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png_memset(png_ptr->gamma_16_table, 0, num * png_sizeof(png_uint_16p));
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png_memset(png_ptr->gamma_16_table, 0, num * png_sizeof(png_uint_16p));
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if (png_ptr->transformations & (PNG_16_TO_8 | PNG_BACKGROUND))
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{
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@ -4264,7 +4260,7 @@ png_build_gamma_table(png_structp png_ptr)
|
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png_ptr->gamma_16_to_1 = (png_uint_16pp)png_malloc(png_ptr,
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(png_uint_32)(num * png_sizeof(png_uint_16p )));
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png_memset(png_ptr->gamma_16_to_1, 0, num * png_sizeof(png_uint_16p));
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png_memset(png_ptr->gamma_16_to_1, 0, num * png_sizeof(png_uint_16p));
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for (i = 0; i < num; i++)
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{
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@ -4290,7 +4286,7 @@ png_build_gamma_table(png_structp png_ptr)
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png_ptr->gamma_16_from_1 = (png_uint_16pp)png_malloc(png_ptr,
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(png_uint_32)(num * png_sizeof(png_uint_16p)));
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png_memset(png_ptr->gamma_16_from_1, 0,
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num * png_sizeof(png_uint_16p));
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num * png_sizeof(png_uint_16p));
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for (i = 0; i < num; i++)
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{
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15
pngrutil.c
15
pngrutil.c
@ -1,7 +1,7 @@
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/* pngrutil.c - utilities to read a PNG file
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*
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* Last changed in libpng 1.2.37 [June 4, 2009]
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* Last changed in libpng 1.2.38 [June 12, 2009]
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* 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)
|
||||
@ -2251,7 +2251,7 @@ 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)
|
||||
@ -2263,8 +2263,11 @@ 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)
|
||||
@ -2275,7 +2278,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
|
||||
}
|
||||
#endif
|
||||
png_memcpy((png_charp)png_ptr->unknown_chunk.name,
|
||||
(png_charp)png_ptr->chunk_name,
|
||||
(png_charp)png_ptr->chunk_name,
|
||||
png_sizeof(png_ptr->unknown_chunk.name));
|
||||
png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1] = '\0';
|
||||
png_ptr->unknown_chunk.size = (png_size_t)length;
|
||||
@ -2298,8 +2301,10 @@ 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);
|
||||
|
||||
8
pngset.c
8
pngset.c
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngset.c - storage of image information into info struct
|
||||
*
|
||||
* Last changed in libpng 1.2.37 [June 4, 2009]
|
||||
* Last changed in libpng 1.2.38 [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)
|
||||
@ -1004,7 +1004,7 @@ 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)
|
||||
@ -1035,8 +1035,8 @@ png_set_unknown_chunks(png_structp png_ptr,
|
||||
png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
|
||||
png_unknown_chunkp from = unknowns + i;
|
||||
|
||||
png_memcpy((png_charp)to->name,
|
||||
(png_charp)from->name,
|
||||
png_memcpy((png_charp)to->name,
|
||||
(png_charp)from->name,
|
||||
png_sizeof(from->name));
|
||||
to->name[png_sizeof(to->name)-1] = '\0';
|
||||
to->size = from->size;
|
||||
|
||||
Reference in New Issue
Block a user