1456 lines
45 KiB
C
1456 lines
45 KiB
C
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/* pngconf.h - machine configurable file for libpng
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*
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* libpng version 1.5.0beta17 - April 17, 2010
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*
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* Copyright (c) 1998-2010 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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*
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* This code is released under the libpng license.
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* For conditions of distribution and use, see the disclaimer
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* and license in png.h
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*
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*/
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/* Any machine specific code is near the front of this file, so if you
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* are configuring libpng for a machine, you may want to read the section
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* starting here down to where it starts to typedef png_color, png_text,
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* and png_info.
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*/
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#ifndef PNGCONF_H
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#define PNGCONF_H
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#ifndef PNG_NO_LIMITS_H
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# include <limits.h>
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#endif
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/*
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* Added at libpng-1.2.8
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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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#ifdef PNG_USER_CONFIG
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# ifndef PNG_USER_PRIVATEBUILD
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# define PNG_USER_PRIVATEBUILD
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# endif
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# include "pngusr.h"
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#endif
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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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* e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
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* #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
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* distinguish your DLL from those of the official release. These
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* correspond to the trailing letters that come after the version
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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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* DLL VERSIONINFO structure.
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* - PNG_USER_VERSIONINFO_COMMENTS
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* - PNG_USER_VERSIONINFO_COMPANYNAME
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* - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
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*/
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#ifdef __STDC__
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# ifdef SPECIALBUILD
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# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD) \
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are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
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# endif
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# ifdef PRIVATEBUILD
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# pragma message("PRIVATEBUILD is deprecated.\
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Use PNG_USER_PRIVATEBUILD instead.")
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# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
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# endif
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#endif /* __STDC__ */
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/* End of material added to libpng-1.2.8 */
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#ifndef PNG_VERSION_INFO_ONLY
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/* This is the size of the compression buffer, and thus the size of
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* an IDAT chunk. Make this whatever size you feel is best for your
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* machine. One of these will be allocated per png_struct. When this
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* is full, it writes the data to the disk, and does some other
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* calculations. Making this an extremely small size will slow
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* the library down, but you may want to experiment to determine
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* where it becomes significant, if you are concerned with memory
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* usage. Note that zlib allocates at least 32Kb also. For readers,
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* this describes the size of the buffer available to read the data in.
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* Unless this gets smaller than the size of a row (compressed),
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* it should not make much difference how big this is.
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*/
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#ifndef PNG_ZBUF_SIZE
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# define PNG_ZBUF_SIZE 8192
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#endif
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/* Enable if you want a write-only libpng */
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#ifndef PNG_NO_READ_SUPPORTED
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# define PNG_READ_SUPPORTED
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#endif
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/* Enable if you want a read-only libpng */
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#ifndef PNG_NO_WRITE_SUPPORTED
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# define PNG_WRITE_SUPPORTED
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#endif
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/* Enabled in 1.4.0. */
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#ifdef PNG_ALLOW_BENIGN_ERRORS
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# define png_benign_error png_warning
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# define png_chunk_benign_error png_chunk_warning
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#else
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# ifndef PNG_BENIGN_ERRORS_SUPPORTED
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# define png_benign_error png_error
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# define png_chunk_benign_error png_chunk_error
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# endif
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#endif
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/* Added at libpng version 1.4.0 */
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#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
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# define PNG_WARNINGS_SUPPORTED
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#endif
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/* Added at libpng version 1.4.0 */
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#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
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# define PNG_ERROR_TEXT_SUPPORTED
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#endif
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/* Added at libpng version 1.4.0 */
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#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
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# define PNG_CHECK_cHRM_SUPPORTED
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#endif
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/* Added at libpng version 1.4.0 */
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#if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
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# define PNG_ALIGNED_MEMORY_SUPPORTED
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#endif
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/* Enabled by default in 1.2.0. You can disable this if you don't need to
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* support PNGs that are embedded in MNG datastreams
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*/
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#ifndef PNG_NO_MNG_FEATURES
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# ifndef PNG_MNG_FEATURES_SUPPORTED
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# define PNG_MNG_FEATURES_SUPPORTED
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# endif
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#endif
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/* Added at libpng version 1.4.0 */
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#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
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# ifndef PNG_FLOATING_POINT_SUPPORTED
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# define PNG_FLOATING_POINT_SUPPORTED
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# endif
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#endif
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/* Added at libpng-1.4.0beta49 for testing (this test is no longer used
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* in libpng and png_calloc() is always present)
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*/
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#define PNG_CALLOC_SUPPORTED
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/* If you are running on a machine where you cannot allocate more
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* than 64K of memory at once, uncomment this. While libpng will not
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* normally need that much memory in a chunk (unless you load up a very
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* large file), zlib needs to know how big of a chunk it can use, and
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* libpng thus makes sure to check any memory allocation to verify it
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* will fit into memory.
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#define PNG_MAX_MALLOC_64K
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*/
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#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
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# define PNG_MAX_MALLOC_64K
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#endif
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/* This macro protects us against machines that don't have function
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* prototypes (ie K&R style headers). If your compiler does not handle
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* function prototypes, define this macro and use the included ansi2knr.
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* I've always been able to use _NO_PROTO as the indicator, but you may
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* need to drag the empty declaration out in front of here, or change the
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* ifdef to suit your own needs.
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*/
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#ifndef PNGARG
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# ifdef OF /* zlib prototype munger */
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# define PNGARG(arglist) OF(arglist)
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# else
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# ifdef _NO_PROTO
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# define PNGARG(arglist) ()
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# else
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# define PNGARG(arglist) arglist
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# endif /* _NO_PROTO */
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# endif /* OF */
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#endif /* PNGARG */
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/* Function calling conventions.
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* =============================
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* Normally it is not necessary to specify to the compiler how to call
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* a function - it just does it - however on x86 systems derived from
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* Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
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* and some others) there are multiple ways to call a function and the
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* default can be changed on the compiler command line. For this reason
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* libpng allows the calling convention of every exported function and
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* every function called via a user supplied function pointer to be
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* specified. This is done by defining the following macros:
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*
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* PNGAPI Calling convention for exported functions.
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* PNGCBAPI Calling convention for user provided (callback) functions.
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* PNGCAPI Calling convention used by the ANSI-C library (required
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* for longjmp callbacks and sometimes used internally to
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* specify the calling convention for zlib).
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*
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*
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* Two common cases are supported:
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*
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* PNGAPI_RULE=0 Use the operating system convention for PNGAPI and
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* the 'C' calling convention (from PNGCAPI) for
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* callbacks (PNGCBAPI).
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* PNGAPI_RULE=1 Use PNGCAPI - the 'C' calling convention - throughout.
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* This is correct on Cygwin implementations, assumed to
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* be correct on MingW compilations and likely to work
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* in C/C++ only environments everywhere else.
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*
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* These cases only differ if the operating system does not use the C
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* calling convention, at present this just means the above cases
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* (x86 DOS/Windows sytems) and, even then, this does not apply to
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* Cygwin running on those systems.
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*/
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#ifndef PNGAPI_RULE
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# define PNGAPI_RULE 0
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#endif
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/* Symbol export
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* =============
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* When building a shared library it is almost always necessary to tell
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* the compiler which symbols to export. The png.h macro 'PNG_EXPORT'
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* is used to mark the symbols. On some systems these symbols can be
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* extracted at link time and need no special processing by the compiler,
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* on other systems the symbols are flagged by the compiler and just
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* the declaration requires a special tag applied (unfortunately) in a
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* compiler dependent way. Some systems can do either.
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*
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* A small number of older systems also require a symbol from a DLL to
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* be flagged to the program that calls it. This is a problem because
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* we do not know in the header file included by application code that
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* the symbol will come from a shared library, as opposed to a statically
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* linked one. For this reason the application must tell us by setting
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* the magic flag PNG_USE_DLL to turn on the special processing before
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* it includes png.h.
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*
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* Four additional macros are used to make this happen:
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*
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* PNG_IMPEXP The magic (if any) to cause a symbol to be exported from
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* the build or imported if PNG_USE_DLL is set - compiler
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* and system specific.
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*
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* PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to
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* 'type', compiler specific.
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*
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* PNG_DLL_EXPORT Set to the magic to use during a libpng build to
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* make a symbol exported from the DLL.
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*
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* PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come
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* from a DLL - used to define PNG_IMPEXP when
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* PNG_USE_DLL is set.
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*/
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/* System specific discovery.
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* ==========================
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* This code is used at build time to find PNG_IMPEXP, the API settings
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* and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
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* import processing is possible.
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*
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* NOTE: this is poorly tested and may miss many cases, the default
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* (everything empty) is harmless unless the result is a DLL that is
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* intended to be distributed!
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*/
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#if defined(__CYGWIN__)
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/* Cygwin: force PNGCAPI to cdecl. */
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# ifndef PNGCAPI
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# define PNGCAPI __cdecl
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# endif
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/* Provide the appropriate defaults for exporting a symbol from
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* the DLL and forcing import. Always set these - the choice to
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* use them is made below.
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*/
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# ifndef PNG_DLL_EXPORT
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# define PNG_DLL_EXPORT __declspec(dllexport)
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# endif
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# ifndef PNG_DLL_IMPORT
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# define PNG_DLL_IMPORT __declspec(dllimport)
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# endif
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#else /* !Cygwin */
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# if ( defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
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defined(_WIN32) || defined(__WIN32__) ) &&\
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( defined(_X86_) || defined(_X64_) || defined(_M_IX86) ||\
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defined(_M_X64) || defined(_M_IA64) )
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/* Windows system (DOS doesn't support DLLs) running on x86/x64 and
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* not being built under Cygwin or by a MingW compiler.
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*/
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# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
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# ifndef PNGCAPI
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# define PNGCAPI __cdecl
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# endif
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# if PNGAPI_RULE == 0 && !defined(PNGAPI)
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# define PNGAPI __stdcall
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# endif
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# else
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/* An older compiler, or one not detected (erroneously) above. */
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# ifndef PNGCAPI
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# define PNGCAPI _cdecl
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# endif
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# if PNGAPI_RULE == 0 && !defined(PNGAPI)
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# define PNGAPI _stdcall
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# endif
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# endif /* compiler/api */
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/* NOTE: PNGCBAPI always defaults to PNGCAPI. */
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# if (defined(_MSC_VER) && _MSC_VER < 800) ||\
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(defined(__BORLANDC__) && __BORLANDC__ < 0x500)
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/* older Borland and MSC
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* compilers used '__export' and required this to be after
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* the type.
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*/
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# ifndef PNG_EXPORT_TYPE
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# define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
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# endif
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# define PNG_DLL_EXPORT __export
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# else /* newer compiler */
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# define PNG_DLL_EXPORT __declspec(dllexport)
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# ifndef PNG_DLL_IMPORT
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# define PNG_DLL_IMPORT __declspec(dllimport)
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# endif
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# endif /* compiler */
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# else /* !Cygwin && !Windows/x86 */
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# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
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# ifndef PNGAPI
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# define PNGAPI _System
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# endif
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# else /* !Cygwin && !Windows/x86 && !OS/2 */
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/* Use the defaults */
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# endif /* other system, !OS/2 */
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# endif /* !Windows/x86 */
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#endif /* !Cygwin */
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/* Now do all the defaulting . */
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#ifndef PNGCAPI
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# define PNGCAPI
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#endif
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#ifndef PNGCBAPI
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# define PNGCBAPI PNGCAPI
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#endif
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#ifndef PNGAPI
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# define PNGAPI PNGCAPI
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#endif
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/* The default for PNG_IMPEXP depends on whether the library is
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* being built or used.
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*/
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#ifndef PNG_IMPEXP
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# ifdef PNGLIB_BUILD
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/* Building the library */
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# if (defined(DLL_EXPORT)/*from libtool*/ ||\
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defined(_WINDLL) || defined(_DLL) || defined(__DLL__) ||\
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defined(PNG_BUILD_DLL)) && defined(PNG_DLL_EXPORT)
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/* Building a DLL. */
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# define PNG_IMPEXP PNG_DLL_EXPORT
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# endif /* DLL */
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# else
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/* Using the library */
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# if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
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/* This forces use of a DLL, disallowing static linking */
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# define PNG_IMPEXP PNG_DLL_IMPORT
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# endif
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# endif
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# ifndef PNG_IMPEXP
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# define PNG_IMPEXP
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# endif
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#endif
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#ifndef PNG_EXPORT_TYPE
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# define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
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#endif
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#ifndef PNG_EXPORT
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# define PNG_EXPORT(type, name, args, attributes, ordinal)\
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PNG_EXPORT_TYPE(type) (PNGAPI name) PNGARG(args) attributes
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#endif
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/* Use PNG_REMOVED to comment out a removed interface. */
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#ifndef PNG_REMOVED
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# define PNG_REMOVED(name, ordinal)
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#endif
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#ifndef PNG_CALLBACK
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# define PNG_CALLBACK(type, name, args, attributes)\
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type (PNGCBAPI name) PNGARG(args) attributes
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#endif
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/* Support for compiler specific function attributes. These are used
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* so that where compiler support is available incorrect use of API
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* functions in png.h will generate compiler warnings.
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*
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* Added at libpng-1.2.41.
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*/
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#ifndef PNG_NO_PEDANTIC_WARNINGS
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# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
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# define PNG_PEDANTIC_WARNINGS_SUPPORTED
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# endif
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#endif
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#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
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/* Support for compiler specific function attributes. These are used
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* so that where compiler support is available incorrect use of API
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* functions in png.h will generate compiler warnings. Added at libpng
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* version 1.2.41.
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*/
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# ifdef __GNUC__
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# ifndef PNG_USE_RESULT
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# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
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# endif
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# ifndef PNG_NORETURN
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# define PNG_NORETURN __attribute__((__noreturn__))
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# endif
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# ifndef PNG_ALLOCATED
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# define PNG_ALLOCATED __attribute__((__malloc__))
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# endif
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|
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/* This specifically protects structure members that should only be
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* accessed from within the library, therefore should be empty during
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* a library build.
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*/
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# ifndef PNGLIB_BUILD
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# ifndef PNG_DEPRECATED
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# define PNG_DEPRECATED __attribute__((__deprecated__))
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# endif
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# ifndef PNG_DEPSTRUCT
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# define PNG_DEPSTRUCT __attribute__((__deprecated__))
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# endif
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# ifndef PNG_PRIVATE
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# if 0 /* Doesn't work so we use deprecated instead*/
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# define PNG_PRIVATE \
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__attribute__((warning("This function is not exported by libpng.")))
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# else
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# define PNG_PRIVATE \
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__attribute__((__deprecated__))
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# endif
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# endif /* PNG_PRIVATE */
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# endif /* PNGLIB_BUILD */
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|
# endif /* __GNUC__ */
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#endif /* PNG_PEDANTIC_WARNINGS */
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|
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#ifndef PNG_DEPRECATED
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# define PNG_DEPRECATED /* Use of this function is deprecated */
|
|
#endif
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|
#ifndef PNG_USE_RESULT
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|
# define PNG_USE_RESULT /* The result of this function must be checked */
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|
#endif
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#ifndef PNG_NORETURN
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# define PNG_NORETURN /* This function does not return */
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#endif
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#ifndef PNG_ALLOCATED
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# define PNG_ALLOCATED /* The result of the function is new memory */
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#endif
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#ifndef PNG_DEPSTRUCT
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# define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
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#endif
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#ifndef PNG_PRIVATE
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# define PNG_PRIVATE /* This is a private libpng function */
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#endif
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/* This protects us against compilers that run on a windowing system
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|
* and thus don't have or would rather us not use the stdio types:
|
|
* stdin, stdout, and stderr. The only one currently used is stderr
|
|
* in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
|
|
* prevent these from being compiled and used. #defining PNG_NO_STDIO
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|
* will also prevent these, plus will prevent the entire set of stdio
|
|
* macros and functions (FILE *, printf, etc.) from being compiled and used,
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|
* unless (PNG_DEBUG > 0) has been #defined.
|
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*
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* #define PNG_NO_CONSOLE_IO
|
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* #define PNG_NO_STDIO
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*/
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#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
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# define PNG_STDIO_SUPPORTED
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#endif
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#ifdef PNG_NO_STDIO
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# ifndef PNG_NO_CONSOLE_IO
|
|
# define PNG_NO_CONSOLE_IO
|
|
# endif
|
|
# ifdef PNG_DEBUG
|
|
# if (PNG_DEBUG > 0)
|
|
# include <stdio.h>
|
|
# endif
|
|
# endif
|
|
#else
|
|
# include <stdio.h>
|
|
#endif
|
|
|
|
#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
|
|
# define PNG_CONSOLE_IO_SUPPORTED
|
|
#endif
|
|
|
|
/* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
|
|
#if !defined(PNG_NO_SETJMP) && \
|
|
!defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
|
|
# define PNG_SETJMP_SUPPORTED
|
|
#endif
|
|
|
|
#ifdef PNG_SETJMP_SUPPORTED
|
|
# include <setjmp.h>
|
|
#endif
|
|
|
|
#ifdef BSD
|
|
# include <strings.h>
|
|
#else
|
|
# include <string.h>
|
|
#endif
|
|
|
|
/* Other defines for things like memory and the like can go here. */
|
|
|
|
/* This controls how fine the quantizing gets. As this allocates
|
|
* a largish chunk of memory (32K), those who are not as concerned
|
|
* with quantizing quality can decrease some or all of these.
|
|
*/
|
|
#ifndef PNG_QUANTIZE_RED_BITS
|
|
# define PNG_QUANTIZE_RED_BITS 5
|
|
#endif
|
|
#ifndef PNG_QUANTIZE_GREEN_BITS
|
|
# define PNG_QUANTIZE_GREEN_BITS 5
|
|
#endif
|
|
#ifndef PNG_QUANTIZE_BLUE_BITS
|
|
# define PNG_QUANTIZE_BLUE_BITS 5
|
|
#endif
|
|
|
|
/* This controls how fine the gamma correction becomes when you
|
|
* are only interested in 8 bits anyway. Increasing this value
|
|
* results in more memory being used, and more pow() functions
|
|
* being called to fill in the gamma tables. Don't set this value
|
|
* less then 8, and even that may not work (I haven't tested it).
|
|
*/
|
|
#ifndef PNG_MAX_GAMMA_8
|
|
# define PNG_MAX_GAMMA_8 11
|
|
#endif
|
|
|
|
/* This controls how much a difference in gamma we can tolerate before
|
|
* we actually start doing gamma conversion.
|
|
*/
|
|
#ifndef PNG_GAMMA_THRESHOLD
|
|
# define PNG_GAMMA_THRESHOLD 0.05
|
|
#endif
|
|
|
|
/* The following uses const char * instead of char * for error
|
|
* and warning message functions, so some compilers won't complain.
|
|
* If you do not want to use const, define PNG_NO_CONST here.
|
|
*/
|
|
#ifndef PNG_CONST
|
|
# ifndef PNG_NO_CONST
|
|
# define PNG_CONST const
|
|
# else
|
|
# define PNG_CONST
|
|
# endif
|
|
#endif
|
|
|
|
/* The following defines give you the ability to remove code from the
|
|
* library that you will not be using. I wish I could figure out how to
|
|
* automate this, but I can't do that without making it seriously hard
|
|
* on the users. So if you are not using an ability, change the #define
|
|
* to and #undef, and that part of the library will not be compiled. If
|
|
* your linker can't find a function, you may want to make sure the
|
|
* ability is defined here. Some of these depend upon some others being
|
|
* defined. I haven't figured out all the interactions here, so you may
|
|
* have to experiment awhile to get everything to compile. If you are
|
|
* creating or using a shared library, you probably shouldn't touch this,
|
|
* as it will affect the size of the structures, and this will cause bad
|
|
* things to happen if the library and/or application ever change.
|
|
*/
|
|
|
|
/* Any features you will not be using can be undef'ed here */
|
|
|
|
/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
|
|
* to turn it off with PNG_NO_READ|WRITE_TRANSFORMS on the compile line,
|
|
* then pick and choose which ones to define without having to edit this
|
|
* file. It is safe to use the PNG_NO_READ|WRITE_TRANSFORMS
|
|
* if you only want to have a png-compliant reader/writer but don't need
|
|
* any of the extra transformations. This saves about 80 kbytes in a
|
|
* typical installation of the library. (PNG_NO_* form added in version
|
|
* 1.0.1c, for consistency; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
|
|
* 1.4.0)
|
|
*/
|
|
|
|
/* Ignore attempt to turn off both floating and fixed point support */
|
|
#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
|
|
!defined(PNG_NO_FIXED_POINT_SUPPORTED)
|
|
# define PNG_FIXED_POINT_SUPPORTED
|
|
#endif
|
|
|
|
#ifdef PNG_READ_SUPPORTED
|
|
|
|
/* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */
|
|
# if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
|
|
!defined(PNG_NO_READ_TRANSFORMS)
|
|
# define PNG_READ_TRANSFORMS_SUPPORTED
|
|
# endif
|
|
|
|
# ifdef PNG_READ_TRANSFORMS_SUPPORTED
|
|
# ifndef PNG_NO_READ_EXPAND
|
|
# define PNG_READ_EXPAND_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_SHIFT
|
|
# define PNG_READ_SHIFT_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_PACK
|
|
# define PNG_READ_PACK_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_BGR
|
|
# define PNG_READ_BGR_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_SWAP
|
|
# define PNG_READ_SWAP_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_PACKSWAP
|
|
# define PNG_READ_PACKSWAP_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_INVERT
|
|
# define PNG_READ_INVERT_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_QUANTIZE
|
|
# define PNG_READ_QUANTIZE_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_BACKGROUND
|
|
# define PNG_READ_BACKGROUND_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_16_TO_8
|
|
# define PNG_READ_16_TO_8_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_FILLER
|
|
# define PNG_READ_FILLER_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_GAMMA
|
|
# define PNG_READ_GAMMA_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_GRAY_TO_RGB
|
|
# define PNG_READ_GRAY_TO_RGB_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_SWAP_ALPHA
|
|
# define PNG_READ_SWAP_ALPHA_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_INVERT_ALPHA
|
|
# define PNG_READ_INVERT_ALPHA_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_STRIP_ALPHA
|
|
# define PNG_READ_STRIP_ALPHA_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_USER_TRANSFORM
|
|
# define PNG_READ_USER_TRANSFORM_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_RGB_TO_GRAY
|
|
# define PNG_READ_RGB_TO_GRAY_SUPPORTED
|
|
# endif
|
|
# endif /* PNG_READ_TRANSFORMS_SUPPORTED */
|
|
|
|
# ifndef PNG_NO_PROGRESSIVE_READ
|
|
# define PNG_PROGRESSIVE_READ_SUPPORTED
|
|
# endif
|
|
/* You can define PNG_NO_PROGRESSIVE_READ if you don't do progressive reading.
|
|
* This is not talking about interlacing capability! You'll still have
|
|
* interlacing unless you change the following define which is required
|
|
* for PNG-compliant decoders:
|
|
*/
|
|
|
|
# define PNG_READ_INTERLACING_SUPPORTED
|
|
|
|
/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
|
|
# if !defined(PNG_NO_SEQUENTIAL_READ) && \
|
|
!defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
|
|
!defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
|
|
# define PNG_SEQUENTIAL_READ_SUPPORTED
|
|
# endif
|
|
|
|
# ifndef PNG_NO_READ_COMPOSITE_NODIV
|
|
# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
|
|
/* well tested on Intel, SGI */
|
|
# define PNG_READ_COMPOSITE_NODIV_SUPPORTED
|
|
# endif
|
|
# endif
|
|
|
|
# if !defined(PNG_NO_GET_INT_32) || defined(PNG_READ_oFFS_SUPPORTED) || \
|
|
defined(PNG_READ_pCAL_SUPPORTED)
|
|
# ifndef PNG_GET_INT_32_SUPPORTED
|
|
# define PNG_GET_INT_32_SUPPORTED
|
|
# endif
|
|
# endif
|
|
|
|
#endif /* PNG_READ_SUPPORTED */
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
|
|
/* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
|
|
# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
|
|
!defined(PNG_NO_WRITE_TRANSFORMS)
|
|
# define PNG_WRITE_TRANSFORMS_SUPPORTED
|
|
# endif
|
|
|
|
# ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
|
|
# ifndef PNG_NO_WRITE_SHIFT
|
|
# define PNG_WRITE_SHIFT_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_PACK
|
|
# define PNG_WRITE_PACK_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_BGR
|
|
# define PNG_WRITE_BGR_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_SWAP
|
|
# define PNG_WRITE_SWAP_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_PACKSWAP
|
|
# define PNG_WRITE_PACKSWAP_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_INVERT
|
|
# define PNG_WRITE_INVERT_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_FILLER
|
|
# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_SWAP_ALPHA
|
|
# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_INVERT_ALPHA
|
|
# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_USER_TRANSFORM
|
|
# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
|
|
# endif
|
|
# endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
|
|
|
|
# if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
|
|
!defined(PNG_WRITE_INTERLACING_SUPPORTED)
|
|
/* This is not required for PNG-compliant encoders, but can cause
|
|
* trouble if left undefined
|
|
*/
|
|
# define PNG_WRITE_INTERLACING_SUPPORTED
|
|
# endif
|
|
|
|
# if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
|
|
!defined(PNG_WRITE_WEIGHTED_FILTER) && \
|
|
defined(PNG_FLOATING_POINT_SUPPORTED)
|
|
# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
|
|
# endif
|
|
|
|
# ifndef PNG_NO_WRITE_FLUSH
|
|
# define PNG_WRITE_FLUSH_SUPPORTED
|
|
# endif
|
|
|
|
# if !defined(PNG_NO_SAVE_INT_32) || defined(PNG_WRITE_oFFS_SUPPORTED) || \
|
|
defined(PNG_WRITE_pCAL_SUPPORTED)
|
|
# ifndef PNG_SAVE_INT_32_SUPPORTED
|
|
# define PNG_SAVE_INT_32_SUPPORTED
|
|
# endif
|
|
# endif
|
|
|
|
#endif /* PNG_WRITE_SUPPORTED */
|
|
|
|
#define PNG_NO_ERROR_NUMBERS
|
|
|
|
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
|
|
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
|
|
# ifndef PNG_NO_USER_TRANSFORM_PTR
|
|
# define PNG_USER_TRANSFORM_PTR_SUPPORTED
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
|
|
# define PNG_TIME_RFC1123_SUPPORTED
|
|
#endif
|
|
|
|
/* This adds extra functions in pngget.c for accessing data from the
|
|
* info pointer (added in version 0.99)
|
|
* png_get_image_width()
|
|
* png_get_image_height()
|
|
* png_get_bit_depth()
|
|
* png_get_color_type()
|
|
* png_get_compression_type()
|
|
* png_get_filter_type()
|
|
* png_get_interlace_type()
|
|
* png_get_pixel_aspect_ratio()
|
|
* png_get_pixels_per_meter()
|
|
* png_get_x_offset_pixels()
|
|
* png_get_y_offset_pixels()
|
|
* png_get_x_offset_microns()
|
|
* png_get_y_offset_microns()
|
|
*/
|
|
#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
|
|
# define PNG_EASY_ACCESS_SUPPORTED
|
|
#endif
|
|
|
|
/* Added at libpng-1.2.0 */
|
|
#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
|
|
# define PNG_USER_MEM_SUPPORTED
|
|
#endif
|
|
|
|
/* Added at libpng-1.2.6 */
|
|
#ifndef PNG_NO_SET_USER_LIMITS
|
|
# ifndef PNG_SET_USER_LIMITS_SUPPORTED
|
|
# define PNG_SET_USER_LIMITS_SUPPORTED
|
|
# endif
|
|
/* Feature added at libpng-1.4.0, this flag added at 1.4.1 */
|
|
# ifndef PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
|
|
# define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
|
|
# endif
|
|
/* Feature added at libpng-1.4.1, this flag added at 1.4.1 */
|
|
# ifndef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
|
|
# define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
|
|
# endif
|
|
#endif
|
|
|
|
/* Added at libpng-1.2.43 */
|
|
#ifndef PNG_NO_USER_LIMITS
|
|
# ifndef PNG_USER_LIMITS_SUPPORTED
|
|
# define PNG_USER_LIMITS_SUPPORTED
|
|
# endif
|
|
#endif
|
|
|
|
/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
|
|
* how large, set these two limits to 0x7fffffffL
|
|
*/
|
|
#ifndef PNG_USER_WIDTH_MAX
|
|
# define PNG_USER_WIDTH_MAX 1000000L
|
|
#endif
|
|
#ifndef PNG_USER_HEIGHT_MAX
|
|
# define PNG_USER_HEIGHT_MAX 1000000L
|
|
#endif
|
|
|
|
/* Added at libpng-1.2.43. To accept all valid PNGs no matter
|
|
* how large, set these two limits to 0.
|
|
*/
|
|
#ifndef PNG_USER_CHUNK_CACHE_MAX
|
|
# define PNG_USER_CHUNK_CACHE_MAX 0
|
|
#endif
|
|
|
|
/* Added at libpng-1.2.43 */
|
|
#ifndef PNG_USER_CHUNK_MALLOC_MAX
|
|
# define PNG_USER_CHUNK_MALLOC_MAX 0
|
|
#endif
|
|
|
|
/* Added at libpng-1.4.0 */
|
|
#if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
|
|
# define PNG_IO_STATE_SUPPORTED
|
|
#endif
|
|
|
|
#ifndef PNG_LITERAL_SHARP
|
|
# define PNG_LITERAL_SHARP 0x23
|
|
#endif
|
|
#ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
|
|
# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
|
|
#endif
|
|
#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
|
|
# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
|
|
#endif
|
|
#ifndef PNG_STRING_NEWLINE
|
|
# define PNG_STRING_NEWLINE "\n"
|
|
#endif
|
|
|
|
/* These are currently experimental features, define them if you want */
|
|
|
|
/* Very little testing, not enabled by default. */
|
|
/*
|
|
#ifdef PNG_READ_SUPPORTED
|
|
# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
|
|
# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
|
|
# endif
|
|
#endif
|
|
*/
|
|
|
|
/* This is only for PowerPC big-endian and 680x0 systems */
|
|
/* some testing, not enabled by default. */
|
|
/*
|
|
#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
|
|
# define PNG_READ_BIG_ENDIAN_SUPPORTED
|
|
#endif
|
|
*/
|
|
|
|
#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
|
|
# define PNG_USE_READ_MACROS
|
|
#endif
|
|
|
|
/* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
|
|
#if !defined(PNG_NO_POINTER_INDEXING) && \
|
|
!defined(PNG_POINTER_INDEXING_SUPPORTED)
|
|
# define PNG_POINTER_INDEXING_SUPPORTED
|
|
#endif
|
|
|
|
|
|
/* Any chunks you are not interested in, you can undef here. The
|
|
* ones that allocate memory may be expecially important (hIST,
|
|
* tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
|
|
* a bit smaller.
|
|
*/
|
|
|
|
/* The size of the png_text structure changed in libpng-1.0.6 when
|
|
* iTXt support was added. iTXt support was turned off by default through
|
|
* libpng-1.2.x, to support old apps that malloc the png_text structure
|
|
* instead of calling png_set_text() and letting libpng malloc it. It
|
|
* was turned on by default in libpng-1.4.0.
|
|
*/
|
|
|
|
/* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
|
|
#if defined(PNG_READ_SUPPORTED) && \
|
|
!defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
|
|
!defined(PNG_NO_READ_ANCILLARY_CHUNKS)
|
|
# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
|
|
#endif
|
|
|
|
/* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
|
|
#if defined(PNG_WRITE_SUPPORTED) && \
|
|
!defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
|
|
!defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
|
|
# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
|
|
#endif
|
|
|
|
#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
|
|
|
|
# ifdef PNG_NO_READ_TEXT
|
|
# define PNG_NO_READ_iTXt
|
|
# define PNG_NO_READ_tEXt
|
|
# define PNG_NO_READ_zTXt
|
|
# endif
|
|
|
|
# ifndef PNG_NO_READ_bKGD
|
|
# define PNG_READ_bKGD_SUPPORTED
|
|
# define PNG_bKGD_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_cHRM
|
|
# define PNG_READ_cHRM_SUPPORTED
|
|
# define PNG_cHRM_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_gAMA
|
|
# define PNG_READ_gAMA_SUPPORTED
|
|
# define PNG_gAMA_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_hIST
|
|
# define PNG_READ_hIST_SUPPORTED
|
|
# define PNG_hIST_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_iCCP
|
|
# define PNG_READ_iCCP_SUPPORTED
|
|
# define PNG_iCCP_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_iTXt
|
|
# ifndef PNG_READ_iTXt_SUPPORTED
|
|
# define PNG_READ_iTXt_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_iTXt_SUPPORTED
|
|
# define PNG_iTXt_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_READ_oFFs
|
|
# define PNG_READ_oFFs_SUPPORTED
|
|
# define PNG_oFFs_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_pCAL
|
|
# define PNG_READ_pCAL_SUPPORTED
|
|
# define PNG_pCAL_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_sCAL
|
|
# define PNG_READ_sCAL_SUPPORTED
|
|
# define PNG_sCAL_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_pHYs
|
|
# define PNG_READ_pHYs_SUPPORTED
|
|
# define PNG_pHYs_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_sBIT
|
|
# define PNG_READ_sBIT_SUPPORTED
|
|
# define PNG_sBIT_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_sPLT
|
|
# define PNG_READ_sPLT_SUPPORTED
|
|
# define PNG_sPLT_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_sRGB
|
|
# define PNG_READ_sRGB_SUPPORTED
|
|
# define PNG_sRGB_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_tEXt
|
|
# define PNG_READ_tEXt_SUPPORTED
|
|
# define PNG_tEXt_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_tIME
|
|
# define PNG_READ_tIME_SUPPORTED
|
|
# define PNG_tIME_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_tRNS
|
|
# define PNG_READ_tRNS_SUPPORTED
|
|
# define PNG_tRNS_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_zTXt
|
|
# define PNG_READ_zTXt_SUPPORTED
|
|
# define PNG_zTXt_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_READ_OPT_PLTE
|
|
/* This only affects support of the optional PLTE chunk in RGB and RGBA
|
|
* images.
|
|
*/
|
|
# define PNG_READ_OPT_PLTE_SUPPORTED
|
|
# endif
|
|
# if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
|
|
defined(PNG_READ_zTXt_SUPPORTED)
|
|
# define PNG_READ_TEXT_SUPPORTED
|
|
# define PNG_TEXT_SUPPORTED
|
|
# endif
|
|
|
|
#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
|
|
|
|
#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
|
|
# ifndef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
|
|
# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
|
|
# define PNG_UNKNOWN_CHUNKS_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
|
|
# define PNG_READ_USER_CHUNKS_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_READ_USER_CHUNKS
|
|
# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
|
|
# define PNG_READ_USER_CHUNKS_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_USER_CHUNKS_SUPPORTED
|
|
# define PNG_USER_CHUNKS_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_HANDLE_AS_UNKNOWN
|
|
# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
|
|
# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
# ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
|
|
|
|
# ifdef PNG_NO_WRITE_TEXT
|
|
# define PNG_NO_WRITE_iTXt
|
|
# define PNG_NO_WRITE_tEXt
|
|
# define PNG_NO_WRITE_zTXt
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_bKGD
|
|
# define PNG_WRITE_bKGD_SUPPORTED
|
|
# ifndef PNG_bKGD_SUPPORTED
|
|
# define PNG_bKGD_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_cHRM
|
|
# define PNG_WRITE_cHRM_SUPPORTED
|
|
# ifndef PNG_cHRM_SUPPORTED
|
|
# define PNG_cHRM_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_gAMA
|
|
# define PNG_WRITE_gAMA_SUPPORTED
|
|
# ifndef PNG_gAMA_SUPPORTED
|
|
# define PNG_gAMA_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_hIST
|
|
# define PNG_WRITE_hIST_SUPPORTED
|
|
# ifndef PNG_hIST_SUPPORTED
|
|
# define PNG_hIST_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_iCCP
|
|
# define PNG_WRITE_iCCP_SUPPORTED
|
|
# ifndef PNG_iCCP_SUPPORTED
|
|
# define PNG_iCCP_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_iTXt
|
|
# ifndef PNG_WRITE_iTXt_SUPPORTED
|
|
# define PNG_WRITE_iTXt_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_iTXt_SUPPORTED
|
|
# define PNG_iTXt_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_oFFs
|
|
# define PNG_WRITE_oFFs_SUPPORTED
|
|
# ifndef PNG_oFFs_SUPPORTED
|
|
# define PNG_oFFs_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_pCAL
|
|
# define PNG_WRITE_pCAL_SUPPORTED
|
|
# ifndef PNG_pCAL_SUPPORTED
|
|
# define PNG_pCAL_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_sCAL
|
|
# define PNG_WRITE_sCAL_SUPPORTED
|
|
# ifndef PNG_sCAL_SUPPORTED
|
|
# define PNG_sCAL_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_pHYs
|
|
# define PNG_WRITE_pHYs_SUPPORTED
|
|
# ifndef PNG_pHYs_SUPPORTED
|
|
# define PNG_pHYs_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_sBIT
|
|
# define PNG_WRITE_sBIT_SUPPORTED
|
|
# ifndef PNG_sBIT_SUPPORTED
|
|
# define PNG_sBIT_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_sPLT
|
|
# define PNG_WRITE_sPLT_SUPPORTED
|
|
# ifndef PNG_sPLT_SUPPORTED
|
|
# define PNG_sPLT_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_sRGB
|
|
# define PNG_WRITE_sRGB_SUPPORTED
|
|
# ifndef PNG_sRGB_SUPPORTED
|
|
# define PNG_sRGB_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_tEXt
|
|
# define PNG_WRITE_tEXt_SUPPORTED
|
|
# ifndef PNG_tEXt_SUPPORTED
|
|
# define PNG_tEXt_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_tIME
|
|
# define PNG_WRITE_tIME_SUPPORTED
|
|
# ifndef PNG_tIME_SUPPORTED
|
|
# define PNG_tIME_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_tRNS
|
|
# define PNG_WRITE_tRNS_SUPPORTED
|
|
# ifndef PNG_tRNS_SUPPORTED
|
|
# define PNG_tRNS_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# ifndef PNG_NO_WRITE_zTXt
|
|
# define PNG_WRITE_zTXt_SUPPORTED
|
|
# ifndef PNG_zTXt_SUPPORTED
|
|
# define PNG_zTXt_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# if defined(PNG_WRITE_iTXt_SUPPORTED) || \
|
|
defined(PNG_WRITE_tEXt_SUPPORTED) || \
|
|
defined(PNG_WRITE_zTXt_SUPPORTED)
|
|
# define PNG_WRITE_TEXT_SUPPORTED
|
|
# ifndef PNG_TEXT_SUPPORTED
|
|
# define PNG_TEXT_SUPPORTED
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef PNG_WRITE_tIME_SUPPORTED
|
|
# ifndef PNG_NO_CONVERT_tIME
|
|
/* The "tm" structure is not supported on WindowsCE */
|
|
# ifndef _WIN32_WCE
|
|
# ifndef PNG_CONVERT_tIME_SUPPORTED
|
|
# define PNG_CONVERT_tIME_SUPPORTED
|
|
# endif
|
|
# endif
|
|
# endif
|
|
# endif
|
|
|
|
# endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
|
|
|
|
# ifndef PNG_NO_WRITE_FILTER
|
|
# ifndef PNG_WRITE_FILTER_SUPPORTED
|
|
# define PNG_WRITE_FILTER_SUPPORTED
|
|
# endif
|
|
# endif
|
|
|
|
# ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
|
|
# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
|
|
# 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 /* PNG_WRITE_SUPPORTED */
|
|
|
|
/* Turn this off to disable png_read_png() and png_write_png() and
|
|
* leave the row_pointers member out of the info structure.
|
|
*/
|
|
#ifndef PNG_NO_INFO_IMAGE
|
|
# define PNG_INFO_IMAGE_SUPPORTED
|
|
#endif
|
|
|
|
/* Need the time information for converting tIME chunks */
|
|
#ifdef PNG_CONVERT_tIME_SUPPORTED
|
|
/* "time.h" functions are not supported on WindowsCE */
|
|
# include <time.h>
|
|
#endif
|
|
|
|
/* Some typedefs to get us started. These should be safe on most of the
|
|
* common platforms. The typedefs should be at least as large as the
|
|
* numbers suggest (a png_uint_32 must be at least 32 bits long), but they
|
|
* don't have to be exactly that size. Some compilers dislike passing
|
|
* unsigned shorts as function parameters, so you may be better off using
|
|
* unsigned int for png_uint_16.
|
|
*/
|
|
|
|
#if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL)
|
|
typedef unsigned int png_uint_32;
|
|
typedef int png_int_32;
|
|
#else
|
|
typedef unsigned long png_uint_32;
|
|
typedef long png_int_32;
|
|
#endif
|
|
typedef unsigned short png_uint_16;
|
|
typedef short png_int_16;
|
|
typedef unsigned char png_byte;
|
|
|
|
#ifdef PNG_NO_SIZE_T
|
|
typedef unsigned int png_size_t;
|
|
#else
|
|
typedef size_t png_size_t;
|
|
#endif
|
|
#define png_sizeof(x) sizeof(x)
|
|
|
|
/* The following is needed for medium model support. It cannot be in the
|
|
* pngpriv.h header. Needs modification for other compilers besides
|
|
* MSC. Model independent support declares all arrays and pointers to be
|
|
* large using the far keyword. The zlib version used must also support
|
|
* model independent data. As of version zlib 1.0.4, the necessary changes
|
|
* have been made in zlib. The USE_FAR_KEYWORD define triggers other
|
|
* changes that are needed. (Tim Wegner)
|
|
*/
|
|
|
|
/* Separate compiler dependencies (problem here is that zlib.h always
|
|
* defines FAR. (SJT)
|
|
*/
|
|
#ifdef __BORLANDC__
|
|
# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
|
|
# define LDATA 1
|
|
# else
|
|
# define LDATA 0
|
|
# endif
|
|
/* GRR: why is Cygwin in here? Cygwin is not Borland C... */
|
|
# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
|
|
# define PNG_MAX_MALLOC_64K
|
|
# if (LDATA != 1)
|
|
# ifndef FAR
|
|
# define FAR __far
|
|
# endif
|
|
# define USE_FAR_KEYWORD
|
|
# endif /* LDATA != 1 */
|
|
/* Possibly useful for moving data out of default segment.
|
|
* Uncomment it if you want. Could also define FARDATA as
|
|
* const if your compiler supports it. (SJT)
|
|
# define FARDATA FAR
|
|
*/
|
|
# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
|
|
#endif /* __BORLANDC__ */
|
|
|
|
|
|
/* Suggest testing for specific compiler first before testing for
|
|
* FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
|
|
* making reliance oncertain keywords suspect. (SJT)
|
|
*/
|
|
|
|
/* MSC Medium model */
|
|
#ifdef FAR
|
|
# ifdef M_I86MM
|
|
# define USE_FAR_KEYWORD
|
|
# define FARDATA FAR
|
|
# include <dos.h>
|
|
# endif
|
|
#endif
|
|
|
|
/* SJT: default case */
|
|
#ifndef FAR
|
|
# define FAR
|
|
#endif
|
|
|
|
/* At this point FAR is always defined */
|
|
#ifndef FARDATA
|
|
# define FARDATA
|
|
#endif
|
|
|
|
/* Typedef for floating-point numbers that are converted
|
|
* to fixed-point with a multiple of 100,000, e.g., int_gamma
|
|
*/
|
|
typedef png_int_32 png_fixed_point;
|
|
|
|
/* Add typedefs for pointers */
|
|
typedef void FAR * png_voidp;
|
|
typedef png_byte FAR * png_bytep;
|
|
typedef png_uint_32 FAR * png_uint_32p;
|
|
typedef png_int_32 FAR * png_int_32p;
|
|
typedef png_uint_16 FAR * png_uint_16p;
|
|
typedef png_int_16 FAR * png_int_16p;
|
|
typedef PNG_CONST char FAR * png_const_charp;
|
|
typedef char FAR * png_charp;
|
|
typedef png_fixed_point FAR * png_fixed_point_p;
|
|
|
|
#ifndef PNG_NO_STDIO
|
|
typedef FILE * png_FILE_p;
|
|
#endif
|
|
|
|
#ifdef PNG_FLOATING_POINT_SUPPORTED
|
|
typedef double FAR * png_doublep;
|
|
#endif
|
|
|
|
/* Pointers to pointers; i.e. arrays */
|
|
typedef png_byte FAR * FAR * png_bytepp;
|
|
typedef png_uint_32 FAR * FAR * png_uint_32pp;
|
|
typedef png_int_32 FAR * FAR * png_int_32pp;
|
|
typedef png_uint_16 FAR * FAR * png_uint_16pp;
|
|
typedef png_int_16 FAR * FAR * png_int_16pp;
|
|
typedef PNG_CONST char FAR * FAR * png_const_charpp;
|
|
typedef char FAR * FAR * png_charpp;
|
|
typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
|
|
#ifdef PNG_FLOATING_POINT_SUPPORTED
|
|
typedef double FAR * FAR * png_doublepp;
|
|
#endif
|
|
|
|
/* Pointers to pointers to pointers; i.e., pointer to array */
|
|
typedef char FAR * FAR * FAR * png_charppp;
|
|
|
|
#define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
|
|
|
|
/* Users may want to use these so they are not private. Any library
|
|
* functions that are passed far data must be model-independent.
|
|
*/
|
|
|
|
/* Memory model/platform independent fns */
|
|
#ifndef PNG_ABORT
|
|
# ifdef _WINDOWS_
|
|
# define PNG_ABORT() ExitProcess(0)
|
|
# else
|
|
# define PNG_ABORT() abort()
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef USE_FAR_KEYWORD
|
|
/* Use this to make far-to-near assignments */
|
|
# define CHECK 1
|
|
# define NOCHECK 0
|
|
# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
|
|
# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
|
|
# define png_strcpy _fstrcpy
|
|
# define png_strncpy _fstrncpy /* Added to v 1.2.6 */
|
|
# define png_strlen _fstrlen
|
|
# define png_memcmp _fmemcmp /* SJT: added */
|
|
# define png_memcpy _fmemcpy
|
|
# define png_memset _fmemset
|
|
# define png_sprintf sprintf
|
|
#else
|
|
# ifdef _WINDOWS_ /* Favor Windows over C runtime fns */
|
|
# define CVT_PTR(ptr) (ptr)
|
|
# define CVT_PTR_NOCHECK(ptr) (ptr)
|
|
# define png_strcpy lstrcpyA
|
|
# define png_strncpy lstrcpynA
|
|
# define png_strlen lstrlenA
|
|
# define png_memcmp memcmp
|
|
# define png_memcpy CopyMemory
|
|
# define png_memset memset
|
|
# define png_sprintf wsprintfA
|
|
# else
|
|
# define CVT_PTR(ptr) (ptr)
|
|
# define CVT_PTR_NOCHECK(ptr) (ptr)
|
|
# define png_strcpy strcpy
|
|
# define png_strncpy strncpy /* Added to v 1.2.6 */
|
|
# define png_strlen strlen
|
|
# define png_memcmp memcmp /* SJT: added */
|
|
# define png_memcpy memcpy
|
|
# define png_memset memset
|
|
# define png_sprintf sprintf
|
|
# ifndef PNG_NO_SNPRINTF
|
|
# ifdef _MSC_VER
|
|
# define png_snprintf _snprintf /* Added to v 1.2.19 */
|
|
# define png_snprintf2 _snprintf
|
|
# define png_snprintf6 _snprintf
|
|
# else
|
|
# define png_snprintf snprintf /* Added to v 1.2.19 */
|
|
# define png_snprintf2 snprintf
|
|
# define png_snprintf6 snprintf
|
|
# endif
|
|
# else
|
|
/* You don't have or don't want to use snprintf(). Caution: Using
|
|
* sprintf instead of snprintf exposes your application to accidental
|
|
* or malevolent buffer overflows. If you don't have snprintf()
|
|
* as a general rule you should provide one (you can get one from
|
|
* Portable OpenSSH).
|
|
*/
|
|
# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
|
|
# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
|
|
# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
|
|
sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
/* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
|
|
* and no smaller than png_uint_32. Casts from png_size_t or png_uint_32
|
|
* to png_alloc_size_t are not necessary; in fact, it is recommended
|
|
* not to use them at all so that the compiler can complain when something
|
|
* turns out to be problematic.
|
|
* Casts in the other direction (from png_alloc_size_t to png_size_t or
|
|
* png_uint_32) should be explicitly applied; however, we do not expect
|
|
* to encounter practical situations that require such conversions.
|
|
*/
|
|
#if defined(__TURBOC__) && !defined(__FLAT__)
|
|
# define png_mem_alloc farmalloc
|
|
# define png_mem_free farfree
|
|
typedef unsigned long png_alloc_size_t;
|
|
#else
|
|
# if defined(_MSC_VER) && defined(MAXSEG_64K)
|
|
# define png_mem_alloc(s) halloc(s, 1)
|
|
# define png_mem_free hfree
|
|
typedef unsigned long png_alloc_size_t;
|
|
# else
|
|
# if defined(_WINDOWS_) && (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
|
|
# define png_mem_alloc(s) HeapAlloc(GetProcessHeap(), 0, s)
|
|
# define png_mem_free(p) HeapFree(GetProcessHeap(), 0, p)
|
|
typedef DWORD png_alloc_size_t;
|
|
# else
|
|
# define png_mem_alloc malloc
|
|
# define png_mem_free free
|
|
typedef png_size_t png_alloc_size_t;
|
|
# endif
|
|
# endif
|
|
#endif
|
|
/* End of memory model/platform independent support */
|
|
|
|
/* Just a little check that someone hasn't tried to define something
|
|
* contradictory.
|
|
*/
|
|
#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
|
|
# undef PNG_ZBUF_SIZE
|
|
# define PNG_ZBUF_SIZE 65536L
|
|
#endif
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/* Added at libpng-1.2.8 */
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#endif /* PNG_VERSION_INFO_ONLY */
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#endif /* PNGCONF_H */
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