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844a3c050c
libpng/pngconf.h
Glenn Randers-Pehrson 844a3c050c [devel] Bump to version libpng-1.5.0beta16
2010-03-17 07:42:04 -05:00

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/* pngconf.h - machine configurable file for libpng
*
* libpng version 1.5.0beta16 - March 17, 2010
*
* Copyright (c) 1998-2010 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.)
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
* and license in png.h
*
*/
/* 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
#ifndef PNG_NO_LIMITS_H
# include <limits.h>
#endif
/*
* Added at libpng-1.2.8
*
* PNG_USER_CONFIG has to be defined on the compiler command line. This
* includes the resource compiler for Windows DLL configurations.
*/
#ifdef PNG_USER_CONFIG
# ifndef PNG_USER_PRIVATEBUILD
# define PNG_USER_PRIVATEBUILD
# endif
# include "pngusr.h"
#endif
/*
* If you create a private DLL you need to define in "pngusr.h" the followings:
* #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
* the DLL was built>
* e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
* #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
* distinguish your DLL from those of the official release. These
* correspond to the trailing letters that come after the version
* number and must match your private DLL name>
* e.g. // private DLL "libpng13gx.dll"
* #define PNG_USER_DLLFNAME_POSTFIX "gx"
*
* The following macros are also at your disposal if you want to complete the
* DLL VERSIONINFO structure.
* - PNG_USER_VERSIONINFO_COMMENTS
* - PNG_USER_VERSIONINFO_COMPANYNAME
* - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
*/
#ifdef __STDC__
# ifdef SPECIALBUILD
# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD) \
are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
# endif
# ifdef PRIVATEBUILD
# pragma message("PRIVATEBUILD is deprecated.\
Use PNG_USER_PRIVATEBUILD instead.")
# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
# endif
#endif /* __STDC__ */
/* End of material added to libpng-1.2.8 */
#ifndef PNG_VERSION_INFO_ONLY
/* 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 in 1.4.0. */
#ifdef PNG_ALLOW_BENIGN_ERRORS
# define png_benign_error png_warning
# define png_chunk_benign_error png_chunk_warning
#else
# ifndef PNG_BENIGN_ERRORS_SUPPORTED
# define png_benign_error png_error
# define png_chunk_benign_error png_chunk_error
# endif
#endif
/* Added at libpng version 1.4.0 */
#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
# define PNG_WARNINGS_SUPPORTED
#endif
/* Added at libpng version 1.4.0 */
#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
# define PNG_ERROR_TEXT_SUPPORTED
#endif
/* Added at libpng version 1.4.0 */
#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
# define PNG_CHECK_cHRM_SUPPORTED
#endif
/* Added at libpng version 1.4.0 */
#if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
# define PNG_ALIGNED_MEMORY_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
*/
#ifndef PNG_NO_MNG_FEATURES
# ifndef PNG_MNG_FEATURES_SUPPORTED
# define PNG_MNG_FEATURES_SUPPORTED
# endif
#endif
/* Added at libpng version 1.4.0 */
#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
# ifndef PNG_FLOATING_POINT_SUPPORTED
# define PNG_FLOATING_POINT_SUPPORTED
# endif
#endif
/* Added at libpng-1.4.0beta49 for testing (this test is no longer used
* in libpng and png_calloc() is always present)
*/
#define PNG_CALLOC_SUPPORTED
/* 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
/* 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) ()
# else
# define PNGARG(arglist) arglist
# endif /* _NO_PROTO */
# endif /* OF */
#endif /* PNGARG */
/* Function calling conventions.
* =============================
* Normally it is not necessary to specify to the compiler how to call
* a function - it just does it - however on x86 systems derived from
* Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
* and some others) there are multiple ways to call a function and the
* default can be changed on the compiler command line. For this reason
* libpng allows the calling convention of every exported function and
* every function called via a user supplied function pointer to be
* specified. This is done by defining the following macros:
*
* PNGAPI Calling convention for exported functions.
* PNGCBAPI Calling convention for user provided (callback) functions.
* PNGCAPI Calling convention used by the ANSI-C library (required
* for longjmp callbacks and sometimes used internally to
* specify the calling convention for zlib).
*
*
* Two common cases are supported:
*
* PNGAPI_RULE=0 Use the operating system convention for PNGAPI and
* the 'C' calling convention (from PNGCAPI) for
* callbacks (PNGCBAPI).
* PNGAPI_RULE=1 Use PNGCAPI - the 'C' calling convention - throughout.
* This is correct on Cygwin implementations, assumed to
* be correct on MingW compilations and likely to work
* in C/C++ only environments everywhere else.
*
* These cases only differ if the operating system does not use the C
* calling convention, at present this just means the above cases
* (x86 DOS/Windows sytems) and, even then, this does not apply to
* Cygwin running on those systems.
*/
#ifndef PNGAPI_RULE
# define PNGAPI_RULE 0
#endif
/* Symbol export
* =============
* When building a shared library it is almost always necessary to tell
* the compiler which symbols to export. The png.h macro 'PNG_EXPORT'
* is used to mark the symbols. On some systems these symbols can be
* extracted at link time and need no special processing by the compiler,
* on other systems the symbols are flagged by the compiler and just
* the declaration requires a special tag applied (unfortunately) in a
* compiler dependent way. Some systems can do either.
*
* A small number of older systems also require a symbol from a DLL to
* be flagged to the program that calls it. This is a problem because
* we do not know in the header file included by application code that
* the symbol will come from a shared library, as opposed to a statically
* linked one. For this reason the application must tell us by setting
* the magic flag PNG_USE_DLL to turn on the special processing before
* it includes png.h.
*
* Four additional macros are used to make this happen:
*
* PNG_IMPEXP The magic (if any) to cause a symbol to be exported from
* the build or imported if PNG_USE_DLL is set - compiler
* and system specific.
*
* PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to
* 'type', compiler specific.
*
* PNG_DLL_EXPORT Set to the magic to use during a libpng build to
* make a symbol exported from the DLL.
*
* PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come
* from a DLL - used to define PNG_IMPEXP when
* PNG_USE_DLL is set.
*/
/* System specific discovery.
* ==========================
* This code is used at build time to find PNG_IMPEXP, the API settings
* and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
* import processing is possible.
*
* NOTE: this is poorly tested and may miss many cases, the default
* (everything empty) is harmless unless the result is a DLL that is
* intended to be distributed!
*/
#if defined(__CYGWIN__)
/* Cygwin: force PNGCAPI to cdecl. */
# ifndef PNGCAPI
# define PNGCAPI __cdecl
# endif
/* Provide the appropriate defaults for exporting a symbol from
* the DLL and forcing import. Always set these - the choice to
* use them is made below.
*/
# ifndef PNG_DLL_EXPORT
# define PNG_DLL_EXPORT __declspec(dllexport)
# endif
# ifndef PNG_DLL_IMPORT
# define PNG_DLL_IMPORT __declspec(dllimport)
# endif
#else /* !Cygwin */
# if ( defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
defined(_WIN32) || defined(__WIN32__) ) &&\
( defined(_X86_) || defined(_X64_) || defined(_M_IX86) ||\
defined(_M_X64) || defined(_M_IA64) )
/* Windows system (DOS doesn't support DLLs) running on x86/x64 and
* not being built under Cygwin or by a MingW compiler.
*/
# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
# ifndef PNGCAPI
# define PNGCAPI __cdecl
# endif
# if PNGAPI_RULE == 0 && !defined(PNGAPI)
# define PNGAPI __stdcall
# endif
# else
/* An older compiler, or one not detected (erroneously) above. */
# ifndef PNGCAPI
# define PNGCAPI _cdecl
# endif
# if PNGAPI_RULE == 0 && !defined(PNGAPI)
# define PNGAPI _stdcall
# endif
# endif /* compiler/api */
/* NOTE: PNGCBAPI always defaults to PNGCAPI. */
# if (defined(_MSC_VER) && _MSC_VER < 800) ||\
(defined(__BORLANDC__) && __BORLANDC__ < 0x500)
/* older Borland and MSC
* compilers used '__export' and required this to be after
* the type.
*/
# ifndef PNG_EXPORT_TYPE
# define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
# endif
# define PNG_DLL_EXPORT __export
# else /* newer compiler */
# define PNG_DLL_EXPORT __declspec(dllexport)
# ifndef PNG_DLL_IMPORT
# define PNG_DLL_IMPORT __declspec(dllimport)
# endif
# endif /* compiler */
# else /* !Cygwin && !Windows/x86 */
# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
# ifndef PNGAPI
# define PNGAPI _System
# endif
# else /* !Cygwin && !Windows/x86 && !OS/2 */
/* Use the defaults */
# endif /* other system, !OS/2 */
# endif /* !Windows/x86 */
#endif /* !Cygwin */
/* Now do all the defaulting . */
#ifndef PNGCAPI
# define PNGCAPI
#endif
#ifndef PNGCBAPI
# define PNGCBAPI PNGCAPI
#endif
#ifndef PNGAPI
# define PNGAPI PNGCAPI
#endif
/* The default for PNG_IMPEXP depends on whether the library is
* being built or used.
*/
#ifndef PNG_IMPEXP
# ifdef PNGLIB_BUILD
/* Building the library */
# if (defined(DLL_EXPORT)/*from libtool*/ ||\
defined(_WINDLL) || defined(_DLL) || defined(__DLL__) ||\
defined(PNG_BUILD_DLL)) && defined(PNG_DLL_EXPORT)
/* Building a DLL. */
# define PNG_IMPEXP PNG_DLL_EXPORT
# endif /* DLL */
# else
/* Using the library */
# if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
/* This forces use of a DLL, disallowing static linking */
# define PNG_IMPEXP PNG_DLL_IMPORT
# endif
# endif
# ifndef PNG_IMPEXP
# define PNG_IMPEXP
# endif
#endif
#ifndef PNG_EXPORT_TYPE
# define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
#endif
#ifndef PNG_EXPORT
# define PNG_EXPORT(type, name, args, attributes, ordinal)\
PNG_EXPORT_TYPE(type) (PNGAPI name) PNGARG(args) attributes
#endif
/* Use PNG_REMOVED to comment out a removed interface. */
#ifndef PNG_REMOVED
# define PNG_REMOVED(name, ordinal)
#endif
#ifndef PNG_CALLBACK
# define PNG_CALLBACK(type, name, args, attributes)\
type (PNGCBAPI name) PNGARG(args) attributes
#endif
/* Support for compiler specific function attributes. These are used
* so that where compiler support is available incorrect use of API
* functions in png.h will generate compiler warnings.
*
* Added at libpng-1.2.41.
*/
#ifndef PNG_NO_PEDANTIC_WARNINGS
# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
# define PNG_PEDANTIC_WARNINGS_SUPPORTED
# endif
#endif
#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
/* Support for compiler specific function attributes. These are used
* so that where compiler support is available incorrect use of API
* functions in png.h will generate compiler warnings. Added at libpng
* version 1.2.41.
*/
# ifdef __GNUC__
# ifndef PNG_USE_RESULT
# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
# endif
# ifndef PNG_NORETURN
# define PNG_NORETURN __attribute__((__noreturn__))
# endif
# ifndef PNG_ALLOCATED
# define PNG_ALLOCATED __attribute__((__malloc__))
# endif
/* This specifically protects structure members that should only be
* accessed from within the library, therefore should be empty during
* a library build.
*/
# ifndef PNGLIB_BUILD
# ifndef PNG_DEPRECATED
# define PNG_DEPRECATED __attribute__((__deprecated__))
# endif
# ifndef PNG_DEPSTRUCT
# define PNG_DEPSTRUCT __attribute__((__deprecated__))
# endif
# ifndef PNG_PRIVATE
# if 0 /* Doesn't work so we use deprecated instead*/
# define PNG_PRIVATE \
__attribute__((warning("This function is not exported by libpng.")))
# else
# define PNG_PRIVATE \
__attribute__((__deprecated__))
# endif
# endif /* PNG_PRIVATE */
# endif /* PNGLIB_BUILD */
# endif /* __GNUC__ */
#endif /* PNG_PEDANTIC_WARNINGS */
#ifndef PNG_DEPRECATED
# define PNG_DEPRECATED /* Use of this function is deprecated */
#endif
#ifndef PNG_USE_RESULT
# define PNG_USE_RESULT /* The result of this function must be checked */
#endif
#ifndef PNG_NORETURN
# define PNG_NORETURN /* This function does not return */
#endif
#ifndef PNG_ALLOCATED
# define PNG_ALLOCATED /* The result of the function is new memory */
#endif
#ifndef PNG_DEPSTRUCT
# define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
#endif
#ifndef PNG_PRIVATE
# define PNG_PRIVATE /* This is a private libpng function */
#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(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
# define PNG_STDIO_SUPPORTED
#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
# 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 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
/* 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_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
/* Added at libpng-1.2.8 */
#endif /* PNG_VERSION_INFO_ONLY */
#endif /* PNGCONF_H */
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