pngconf.h
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上传日期:2007-06-13
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- /*
- * ===========================================================================
- * PRODUCTION $Log: pngconf.h,v $
- * PRODUCTION Revision 1000.0 2003/10/29 18:36:30 gouriano
- * PRODUCTION PRODUCTION: IMPORTED [ORIGINAL] Dev-tree R1.3
- * PRODUCTION
- * ===========================================================================
- */
- /* pngconf.h - machine configurable file for libpng
- *
- * libpng 1.2.5rc3 - September 18, 2002
- * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2002 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- */
- /* Any machine specific code is near the front of this file, so if you
- * are configuring libpng for a machine, you may want to read the section
- * starting here down to where it starts to typedef png_color, png_text,
- * and png_info.
- */
- #ifndef PNGCONF_H
- #define PNGCONF_H
- /* This is the size of the compression buffer, and thus the size of
- * an IDAT chunk. Make this whatever size you feel is best for your
- * machine. One of these will be allocated per png_struct. When this
- * is full, it writes the data to the disk, and does some other
- * calculations. Making this an extremely small size will slow
- * the library down, but you may want to experiment to determine
- * where it becomes significant, if you are concerned with memory
- * usage. Note that zlib allocates at least 32Kb also. For readers,
- * this describes the size of the buffer available to read the data in.
- * Unless this gets smaller than the size of a row (compressed),
- * it should not make much difference how big this is.
- */
- #ifndef PNG_ZBUF_SIZE
- # define PNG_ZBUF_SIZE 8192
- #endif
- /* Enable if you want a write-only libpng */
- #ifndef PNG_NO_READ_SUPPORTED
- # define PNG_READ_SUPPORTED
- #endif
- /* Enable if you want a read-only libpng */
- #ifndef PNG_NO_WRITE_SUPPORTED
- # define PNG_WRITE_SUPPORTED
- #endif
- /* Enabled by default in 1.2.0. You can disable this if you don't need to
- support PNGs that are embedded in MNG datastreams */
- #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
- # ifndef PNG_MNG_FEATURES_SUPPORTED
- # define PNG_MNG_FEATURES_SUPPORTED
- # endif
- #endif
- #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
- # ifndef PNG_FLOATING_POINT_SUPPORTED
- # define PNG_FLOATING_POINT_SUPPORTED
- # endif
- #endif
- /* If you are running on a machine where you cannot allocate more
- * than 64K of memory at once, uncomment this. While libpng will not
- * normally need that much memory in a chunk (unless you load up a very
- * large file), zlib needs to know how big of a chunk it can use, and
- * libpng thus makes sure to check any memory allocation to verify it
- * will fit into memory.
- #define PNG_MAX_MALLOC_64K
- */
- #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
- # define PNG_MAX_MALLOC_64K
- #endif
- /* Special munging to support doing things the 'cygwin' way:
- * 'Normal' png-on-win32 defines/defaults:
- * PNG_BUILD_DLL -- building dll
- * PNG_USE_DLL -- building an application, linking to dll
- * (no define) -- building static library, or building an
- * application and linking to the static lib
- * 'Cygwin' defines/defaults:
- * PNG_BUILD_DLL -- (ignored) building the dll
- * (no define) -- (ignored) building an application, linking to the dll
- * PNG_STATIC -- (ignored) building the static lib, or building an
- * application that links to the static lib.
- * ALL_STATIC -- (ignored) building various static libs, or building an
- * application that links to the static libs.
- * Thus,
- * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
- * this bit of #ifdefs will define the 'correct' config variables based on
- * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
- * unnecessary.
- *
- * Also, the precedence order is:
- * ALL_STATIC (since we can't #undef something outside our namespace)
- * PNG_BUILD_DLL
- * PNG_STATIC
- * (nothing) == PNG_USE_DLL
- *
- * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
- * of auto-import in binutils, we no longer need to worry about
- * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
- * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
- * to __declspec() stuff. However, we DO need to worry about
- * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
- * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
- */
- #if defined(__CYGWIN__)
- # if defined(ALL_STATIC)
- # if defined(PNG_BUILD_DLL)
- # undef PNG_BUILD_DLL
- # endif
- # if defined(PNG_USE_DLL)
- # undef PNG_USE_DLL
- # endif
- # if defined(PNG_DLL)
- # undef PNG_DLL
- # endif
- # if !defined(PNG_STATIC)
- # define PNG_STATIC
- # endif
- # else
- # if defined (PNG_BUILD_DLL)
- # if defined(PNG_STATIC)
- # undef PNG_STATIC
- # endif
- # if defined(PNG_USE_DLL)
- # undef PNG_USE_DLL
- # endif
- # if !defined(PNG_DLL)
- # define PNG_DLL
- # endif
- # else
- # if defined(PNG_STATIC)
- # if defined(PNG_USE_DLL)
- # undef PNG_USE_DLL
- # endif
- # if defined(PNG_DLL)
- # undef PNG_DLL
- # endif
- # else
- # if !defined(PNG_USE_DLL)
- # define PNG_USE_DLL
- # endif
- # if !defined(PNG_DLL)
- # define PNG_DLL
- # endif
- # endif
- # endif
- # endif
- #endif
- /* This protects us against compilers that run on a windowing system
- * 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
- * will also prevent these, plus will prevent the entire set of stdio
- * macros and functions (FILE *, printf, etc.) from being compiled and used,
- * unless (PNG_DEBUG > 0) has been #defined.
- *
- * #define PNG_NO_CONSOLE_IO
- * #define PNG_NO_STDIO
- */
- #if defined(_WIN32_WCE)
- # include <windows.h>
- /* Console I/O functions are not supported on WindowsCE */
- # define PNG_NO_CONSOLE_IO
- # ifdef PNG_DEBUG
- # undef PNG_DEBUG
- # endif
- #endif
- #ifdef PNG_BUILD_DLL
- # ifndef PNG_CONSOLE_IO_SUPPORTED
- # ifndef PNG_NO_CONSOLE_IO
- # define PNG_NO_CONSOLE_IO
- # endif
- # endif
- #endif
- # ifdef PNG_NO_STDIO
- # ifndef PNG_NO_CONSOLE_IO
- # define PNG_NO_CONSOLE_IO
- # endif
- # ifdef PNG_DEBUG
- # if (PNG_DEBUG > 0)
- # include <stdio.h>
- # endif
- # endif
- # else
- # if !defined(_WIN32_WCE)
- /* "stdio.h" functions are not supported on WindowsCE */
- # include <stdio.h>
- # endif
- # endif
- /* This macro protects us against machines that don't have function
- * prototypes (ie K&R style headers). If your compiler does not handle
- * function prototypes, define this macro and use the included ansi2knr.
- * I've always been able to use _NO_PROTO as the indicator, but you may
- * need to drag the empty declaration out in front of here, or change the
- * ifdef to suit your own needs.
- */
- #ifndef PNGARG
- #ifdef OF /* zlib prototype munger */
- # define PNGARG(arglist) OF(arglist)
- #else
- #ifdef _NO_PROTO
- # define PNGARG(arglist) ()
- # ifndef PNG_TYPECAST_NULL
- # define PNG_TYPECAST_NULL
- # endif
- #else
- # define PNGARG(arglist) arglist
- #endif /* _NO_PROTO */
- #endif /* OF */
- #endif /* PNGARG */
- /* Try to determine if we are compiling on a Mac. Note that testing for
- * just __MWERKS__ is not good enough, because the Codewarrior is now used
- * on non-Mac platforms.
- */
- #ifndef MACOS
- # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) ||
- defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
- # define MACOS
- # endif
- #endif
- /* enough people need this for various reasons to include it here */
- #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
- # include <sys/types.h>
- #endif
- #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
- # define PNG_SETJMP_SUPPORTED
- #endif
- #ifdef PNG_SETJMP_SUPPORTED
- /* This is an attempt to force a single setjmp behaviour on Linux. If
- * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
- */
- # ifdef __linux__
- # ifdef _BSD_SOURCE
- # define PNG_SAVE_BSD_SOURCE
- # undef _BSD_SOURCE
- # endif
- # ifdef _SETJMP_H
- __png.h__ already includes setjmp.h;
- __dont__ include it again.;
- # endif
- # endif /* __linux__ */
- /* include setjmp.h for error handling */
- # include <setjmp.h>
- # ifdef __linux__
- # ifdef PNG_SAVE_BSD_SOURCE
- # define _BSD_SOURCE
- # undef PNG_SAVE_BSD_SOURCE
- # endif
- # endif /* __linux__ */
- #endif /* PNG_SETJMP_SUPPORTED */
- #ifdef BSD
- # include <strings.h>
- #else
- # include <string.h>
- #endif
- /* Other defines for things like memory and the like can go here. */
- #ifdef PNG_INTERNAL
- #include <stdlib.h>
- /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
- * aren't usually used outside the library (as far as I know), so it is
- * debatable if they should be exported at all. In the future, when it is
- * possible to have run-time registry of chunk-handling functions, some of
- * these will be made available again.
- #define PNG_EXTERN extern
- */
- #define PNG_EXTERN
- /* Other defines specific to compilers can go here. Try to keep
- * them inside an appropriate ifdef/endif pair for portability.
- */
- #if defined(PNG_FLOATING_POINT_SUPPORTED)
- # if defined(MACOS)
- /* We need to check that <math.h> hasn't already been included earlier
- * as it seems it doesn't agree with <fp.h>, yet we should really use
- * <fp.h> if possible.
- */
- # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
- # include <fp.h>
- # endif
- # else
- # include <math.h>
- # endif
- # if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
- /* Amiga SAS/C: We must include builtin FPU functions when compiling using
- * MATH=68881
- */
- # include <m68881.h>
- # endif
- #endif
- /* Codewarrior on NT has linking problems without this. */
- #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
- # define PNG_ALWAYS_EXTERN
- #endif
- /* For some reason, Borland C++ defines memcmp, etc. in mem.h, not
- * stdlib.h like it should (I think). Or perhaps this is a C++
- * "feature"?
- */
- #ifdef __TURBOC__
- # include <mem.h>
- # include "alloc.h"
- #endif
- #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) ||
- defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
- # include <malloc.h>
- #endif
- /* This controls how fine the dithering gets. As this allocates
- * a largish chunk of memory (32K), those who are not as concerned
- * with dithering quality can decrease some or all of these.
- */
- #ifndef PNG_DITHER_RED_BITS
- # define PNG_DITHER_RED_BITS 5
- #endif
- #ifndef PNG_DITHER_GREEN_BITS
- # define PNG_DITHER_GREEN_BITS 5
- #endif
- #ifndef PNG_DITHER_BLUE_BITS
- # define PNG_DITHER_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
- #endif /* PNG_INTERNAL */
- /* 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_NO_CONST
- # define PNG_CONST const
- #else
- # define PNG_CONST
- #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 "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_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 *TRANSFORMS_NOT_SUPPORTED
- * 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)
- */
- /* The size of the png_text structure changed in libpng-1.0.6 when
- * iTXt is supported. It is turned off by default, to support old apps
- * that malloc the png_text structure instead of calling png_set_text()
- * and letting libpng malloc it. It will be turned on by default in
- * libpng-1.3.0.
- */
- #ifndef PNG_iTXt_SUPPORTED
- # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
- # define PNG_NO_READ_iTXt
- # endif
- # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
- # define PNG_NO_WRITE_iTXt
- # endif
- #endif
- /* The following support, added after version 1.0.0, can be turned off here en
- * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
- * with old applications that require the length of png_struct and png_info
- * to remain unchanged.
- */
- #ifdef PNG_LEGACY_SUPPORTED
- # define PNG_NO_FREE_ME
- # define PNG_NO_READ_UNKNOWN_CHUNKS
- # define PNG_NO_WRITE_UNKNOWN_CHUNKS
- # define PNG_NO_READ_USER_CHUNKS
- # define PNG_NO_READ_iCCP
- # define PNG_NO_WRITE_iCCP
- # define PNG_NO_READ_iTXt
- # define PNG_NO_WRITE_iTXt
- # define PNG_NO_READ_sCAL
- # define PNG_NO_WRITE_sCAL
- # define PNG_NO_READ_sPLT
- # define PNG_NO_WRITE_sPLT
- # define PNG_NO_INFO_IMAGE
- # define PNG_NO_READ_RGB_TO_GRAY
- # define PNG_NO_READ_USER_TRANSFORM
- # define PNG_NO_WRITE_USER_TRANSFORM
- # define PNG_NO_USER_MEM
- # define PNG_NO_READ_EMPTY_PLTE
- # define PNG_NO_MNG_FEATURES
- # define PNG_NO_FIXED_POINT_SUPPORTED
- #endif
- /* 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
- #ifndef PNG_NO_FREE_ME
- # define PNG_FREE_ME_SUPPORTED
- #endif
- #if defined(PNG_READ_SUPPORTED)
- #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_DITHER
- # define PNG_READ_DITHER_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 */
- #if !defined(PNG_NO_PROGRESSIVE_READ) &&
- !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
- # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
- #endif /* about interlacing capability! You'll */
- /* still have interlacing unless you change the following line: */
- #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
- #ifndef PNG_NO_READ_COMPOSITE_NODIV
- # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
- # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
- # endif
- #endif
- /* Deprecated, will be removed from version 2.0.0.
- Use PNG_MNG_FEATURES_SUPPORTED instead. */
- #ifndef PNG_NO_READ_EMPTY_PLTE
- # define PNG_READ_EMPTY_PLTE_SUPPORTED
- #endif
- #endif /* PNG_READ_SUPPORTED */
- #if defined(PNG_WRITE_SUPPORTED)
- # 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_READ_USER_TRANSFORM_SUPPORTED) ||
- defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
- # ifndef PNG_NO_USER_TRANSFORM_PTR
- # define PNG_USER_TRANSFORM_PTR_SUPPORTED
- # endif
- #endif
- #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
- encoders, but can cause trouble
- if left undefined */
- #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) &&
- defined(PNG_FLOATING_POINT_SUPPORTED)
- # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- #endif
- #ifndef PNG_1_0_X
- #ifndef PNG_NO_ERROR_NUMBERS
- #define PNG_ERROR_NUMBERS_SUPPORTED
- #endif
- #endif /* PNG_1_0_X */
- #ifndef PNG_NO_WRITE_FLUSH
- # define PNG_WRITE_FLUSH_SUPPORTED
- #endif
- /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
- #ifndef PNG_NO_WRITE_EMPTY_PLTE
- # define PNG_WRITE_EMPTY_PLTE_SUPPORTED
- #endif
- #endif /* PNG_WRITE_SUPPORTED */
- #ifndef PNG_NO_STDIO
- # 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
- /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
- even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */
- #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
- # ifndef PNG_ASSEMBLER_CODE_SUPPORTED
- # define PNG_ASSEMBLER_CODE_SUPPORTED
- # endif
- # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
- # define PNG_MMX_CODE_SUPPORTED
- # endif
- #endif
- /* If you are sure that you don't need thread safety and you are compiling
- with PNG_USE_PNGCCRD for an MMX application, you can define this for
- faster execution. See pnggccrd.c.
- #define PNG_THREAD_UNSAFE_OK
- */
- #if !defined(PNG_1_0_X)
- #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
- # define PNG_USER_MEM_SUPPORTED
- #endif
- #endif /* PNG_1_0_X */
- /* These are currently experimental features, define them if you want */
- /* very little testing */
- /*
- #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 */
- /*
- #ifdef PNG_READ_SUPPORTED
- # ifndef PNG_PNG_READ_BIG_ENDIAN_SUPPORTED
- # define PNG_READ_BIG_ENDIAN_SUPPORTED
- # endif
- #endif
- */
- /* Buggy compilers (e.g., gcc 2.7.2.2) need this */
- /*
- #define PNG_NO_POINTER_INDEXING
- */
- /* These functions are turned off by default, as they will be phased out. */
- /*
- #define PNG_USELESS_TESTS_SUPPORTED
- #define PNG_CORRECT_PALETTE_SUPPORTED
- */
- /* 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.
- */
- #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
- #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_UNKNOWN_CHUNKS
- # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
- # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
- # define PNG_UNKNOWN_CHUNKS_SUPPORTED
- # endif
- # ifndef PNG_NO_HANDLE_AS_UNKNOWN
- # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- # endif
- #endif
- #if !defined(PNG_NO_READ_USER_CHUNKS) &&
- defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
- # define PNG_READ_USER_CHUNKS_SUPPORTED
- # define PNG_USER_CHUNKS_SUPPORTED
- # ifdef PNG_NO_READ_UNKNOWN_CHUNKS
- # undef PNG_NO_READ_UNKNOWN_CHUNKS
- # endif
- # ifdef PNG_NO_HANDLE_AS_UNKNOWN
- # undef PNG_NO_HANDLE_AS_UNKNOWN
- # endif
- #endif
- #ifndef PNG_NO_READ_OPT_PLTE
- # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
- #endif /* optional PLTE chunk in RGB and RGBA images */
- #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 */
- #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
- #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
- # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
- # define PNG_UNKNOWN_CHUNKS_SUPPORTED
- # endif
- # ifndef PNG_NO_HANDLE_AS_UNKNOWN
- # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- # endif
- # endif
- #endif
- #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) ||
- defined(PNG_WRITE_zTXt_SUPPORTED)
- # define PNG_WRITE_TEXT_SUPPORTED
- # ifndef PNG_TEXT_SUPPORTED
- # define PNG_TEXT_SUPPORTED
- # endif
- #endif
- #endif /* PNG_WRITE_ANCILLARY_CHUNKS_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 reading tIME chunks */
- #if defined(PNG_tIME_SUPPORTED)
- # if !defined(_WIN32_WCE)
- /* "time.h" functions are not supported on WindowsCE */
- # include <time.h>
- # endif
- #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. Likewise, for 64-bit systems, you may
- * want to have unsigned int for png_uint_32 instead of unsigned long.
- */
- typedef unsigned long png_uint_32;
- typedef long png_int_32;
- typedef unsigned short png_uint_16;
- typedef short png_int_16;
- typedef unsigned char png_byte;
- /* This is usually size_t. It is typedef'ed just in case you need it to
- change (I'm not sure if you will or not, so I thought I'd be safe) */
- typedef size_t png_size_t;
- /* The following is needed for medium model support. It cannot be in the
- * PNG_INTERNAL section. 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 */
- #if defined(FAR)
- # if defined(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
- #if defined(_WIN32_WCE)
- typedef HANDLE png_FILE_p;
- #else
- typedef FILE * png_FILE_p;
- #endif
- #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;
- /* libpng typedefs for types in zlib. If zlib changes
- * or another compression library is used, then change these.
- * Eliminates need to change all the source files.
- */
- typedef charf * png_zcharp;
- typedef charf * FAR * png_zcharpp;
- typedef z_stream FAR * png_zstreamp;
- /*
- * Define PNG_BUILD_DLL if the module being built is a Windows
- * LIBPNG DLL.
- *
- * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
- * It is equivalent to Microsoft predefined macro _DLL that is
- * automatically defined when you compile using the share
- * version of the CRT (C Run-Time library)
- *
- * The cygwin mods make this behavior a little different:
- * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
- * Define PNG_STATIC if you are building a static library for use with cygwin,
- * -or- if you are building an application that you want to link to the
- * static library.
- * PNG_USE_DLL is defined by default (no user action needed) unless one of
- * the other flags is defined.
- */
- #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
- # define PNG_DLL
- #endif
- /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
- * When building a static lib, default to no GLOBAL ARRAYS, but allow
- * command-line override
- */
- #if defined(__CYGWIN__)
- # if !defined(PNG_STATIC)
- # if defined(PNG_USE_GLOBAL_ARRAYS)
- # undef PNG_USE_GLOBAL_ARRAYS
- # endif
- # if !defined(PNG_USE_LOCAL_ARRAYS)
- # define PNG_USE_LOCAL_ARRAYS
- # endif
- # else
- # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
- # if defined(PNG_USE_GLOBAL_ARRAYS)
- # undef PNG_USE_GLOBAL_ARRAYS
- # endif
- # endif
- # endif
- # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
- # define PNG_USE_LOCAL_ARRAYS
- # endif
- #endif
- /* Do not use global arrays (helps with building DLL's)
- * They are no longer used in libpng itself, since version 1.0.5c,
- * but might be required for some pre-1.0.5c applications.
- */
- #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
- # if defined(PNG_NO_GLOBAL_ARRAYS) || (defined(__GNUC__) && defined(PNG_DLL))
- # define PNG_USE_LOCAL_ARRAYS
- # else
- # define PNG_USE_GLOBAL_ARRAYS
- # endif
- #endif
- #if defined(__CYGWIN__)
- # undef PNGAPI
- # define PNGAPI __cdecl
- # undef PNG_IMPEXP
- # define PNG_IMPEXP
- #endif
- /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
- * you may get warnings regarding the linkage of png_zalloc and png_zfree.
- * Don't ignore those warnings; you must also reset the default calling
- * convention in your compiler to match your PNGAPI, and you must build
- * zlib and your applications the same way you build libpng.
- */
- #ifndef PNGAPI
- #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
- # ifndef PNG_NO_MODULEDEF
- # define PNG_NO_MODULEDEF
- # endif
- #endif
- #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
- # define PNG_IMPEXP
- #endif
- #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) ||
- (( defined(_Windows) || defined(_WINDOWS) ||
- defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
- # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
- # define PNGAPI __cdecl
- # else
- # define PNGAPI _cdecl
- # endif
- # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) ||
- 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
- # define PNG_IMPEXP
- # endif
- # if !defined(PNG_IMPEXP)
- # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
- # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
- /* Borland/Microsoft */
- # if defined(_MSC_VER) || defined(__BORLANDC__)
- # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
- # define PNG_EXPORT PNG_EXPORT_TYPE1
- # else
- # define PNG_EXPORT PNG_EXPORT_TYPE2
- # if defined(PNG_BUILD_DLL)
- # define PNG_IMPEXP __export
- # else
- # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
- VC++ */
- # endif /* Exists in Borland C++ for
- C++ classes (== huge) */
- # endif
- # endif
- # if !defined(PNG_IMPEXP)
- # if defined(PNG_BUILD_DLL)
- # define PNG_IMPEXP __declspec(dllexport)
- # else
- # define PNG_IMPEXP __declspec(dllimport)
- # endif
- # endif
- # endif /* PNG_IMPEXP */
- #else /* !(DLL || non-cygwin WINDOWS) */
- # if (defined(__IBMC__) || defined(IBMCPP__)) && defined(__OS2__)
- # define PNGAPI _System
- # define PNG_IMPEXP
- # else
- # if 0 /* ... other platforms, with other meanings */
- # else
- # define PNGAPI
- # define PNG_IMPEXP
- # endif
- # endif
- #endif
- #endif
- #if defined(__VISAGECPP__)
- /* I don't compile with this _System linkage for wxWindows */
- # ifdef PNGAPI
- # undef PNGAPI
- # endif
- # define PNGAPI _Optlink
- # define PNG_IMPEXP
- # define PNG_USE_LOCAL_ARRAYS
- # ifdef PNG_USE_GLOBAL_ARRAYS
- # undef PNG_USE_GLOBAL_ARRAYS
- # endif
- extern const char png_libpng_ver[18];
- #endif
- #ifndef PNGAPI
- # define PNGAPI
- #endif
- #ifndef PNG_IMPEXP
- # define PNG_IMPEXP
- #endif
- #ifndef PNG_EXPORT
- # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
- #endif
- #ifdef PNG_USE_GLOBAL_ARRAYS
- # ifndef PNG_EXPORT_VAR
- # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
- # endif
- #endif
- /* User may want to use these so they are not in PNG_INTERNAL. Any library
- * functions that are passed far data must be model independent.
- */
- #ifndef PNG_ABORT
- # define PNG_ABORT() abort()
- #endif
- #ifdef PNG_SETJMP_SUPPORTED
- # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
- #else
- # define png_jmpbuf(png_ptr)
- (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
- #endif
- #if defined(USE_FAR_KEYWORD) /* memory model independent fns */
- /* 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_strlen _fstrlen
- # define png_memcmp _fmemcmp /* SJT: added */
- # define png_memcpy _fmemcpy
- # define png_memset _fmemset
- #else /* use the usual functions */
- # define CVT_PTR(ptr) (ptr)
- # define CVT_PTR_NOCHECK(ptr) (ptr)
- # define png_strcpy strcpy
- # define png_strlen strlen
- # define png_memcmp memcmp /* SJT: added */
- # define png_memcpy memcpy
- # define png_memset memset
- #endif
- /* End of memory model independent support */
- /* Just a little check that someone hasn't tried to define something
- * contradictory.
- */
- #if (PNG_ZBUF_SIZE > 65536) && defined(PNG_MAX_MALLOC_64K)
- # undef PNG_ZBUF_SIZE
- # define PNG_ZBUF_SIZE 65536
- #endif
- #ifdef PNG_READ_SUPPORTED
- /* Prior to libpng-1.0.9, this block was in pngasmrd.h */
- #if defined(PNG_INTERNAL)
- /* These are the default thresholds before the MMX code kicks in; if either
- * rowbytes or bitdepth is below the threshold, plain C code is used. These
- * can be overridden at runtime via the png_set_mmx_thresholds() call in
- * libpng 1.2.0 and later. The values below were chosen by Intel.
- */
- #ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT
- # define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 128 /* >= */
- #endif
- #ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT
- # define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 9 /* >= */
- #endif
- /* Set this in the makefile for VC++ on Pentium, not here. */
- /* Platform must be Pentium. Makefile must assemble and load pngvcrd.c .
- * MMX will be detected at run time and used if present.
- */
- #ifdef PNG_USE_PNGVCRD
- # define PNG_HAVE_ASSEMBLER_COMBINE_ROW
- # define PNG_HAVE_ASSEMBLER_READ_INTERLACE
- # define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
- #endif
- /* Set this in the makefile for gcc/as on Pentium, not here. */
- /* Platform must be Pentium. Makefile must assemble and load pnggccrd.c .
- * MMX will be detected at run time and used if present.
- */
- #ifdef PNG_USE_PNGGCCRD
- # define PNG_HAVE_ASSEMBLER_COMBINE_ROW
- # define PNG_HAVE_ASSEMBLER_READ_INTERLACE
- # define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
- #endif
- /* - see pnggccrd.c for info about what is currently enabled */
- #endif /* PNG_INTERNAL */
- #endif /* PNG_READ_SUPPORTED */
- #endif /* PNGCONF_H */