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llvm-6502/runtime/libpng/pngconf.h

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Initial checking of the libpng library. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11149 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-06 16:37:53 +00:00
/* pngconf.h - machine configurable file for libpng
*
* libpng 1.2.5 - October 3, 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
#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 */
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