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/* pngconf.h - machine configurable file for libpng

 *

 * libpng 1.0.12 - June 8, 2001

 * For conditions of distribution and use, see copyright notice in png.h

 * Copyright (c) 1998-2001 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

#define ALL_STATIC

#define PNG_NO_READ_SUPPORTED

/* 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 */

/*

#ifndef 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 -- building the dll

 *   (no define)   -- building an application, linking to the dll

 *   PNG_STATIC    -- building the static lib, or building an application

 *                    that links to the static lib.

 *   ALL_STATIC    -- 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

 */

#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 

   /* 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 

#      endif

#    endif

#  else

#    if !defined(_WIN32_WCE)

/* "stdio.h" functions are not supported on WindowsCE */

#      include 

#    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) ()

#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 

#endif

#ifndef PNG_SETJMP_NOT_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 

#  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 

#else

#  include 

#endif

/* Other defines for things like memory and the like can go here.  */

#ifdef PNG_INTERNAL

#include 

/* 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  hasn't already been included earlier

      * as it seems it doesn't agree with , yet we should really use

      *  if possible.

      */

#    if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)

#      include 

#    endif

#  else

#    include 

#  endif

#  if defined(_AMIGA) && defined(__SASC) && defined(_M68881)

     /* Amiga SAS/C: We must include builtin FPU functions when compiling using

      * MATH=68881

      */

#    include 

#  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 

#  include "alloc.h"

#endif

#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \

    defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))

#  include 

#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

#  ifndef PNG_READ_iTXt_SUPPORTED

#    define PNG_NO_READ_iTXt

#  endif

#  ifndef PNG_WRITE_iTXt_SUPPORTED

#    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

/* Will be enabled in libpng-1.2.0 */

/*

#ifndef PNG_NO_ERROR_NUMBERS

#define PNG_ERROR_NUMBERS_SUPPORTED

#endif

*/

#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 defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)

#  if defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD)

#    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

#endif

/* This will be enabled by default in libpng-1.2.0 */

/*

#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)

#  define PNG_USER_MEM_SUPPORTED

#endif

*/

/* 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

#  define PNG_READ_iTXt_SUPPORTED

#  define PNG_iTXt_SUPPORTED

#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

#  define PNG_WRITE_iTXt_SUPPORTED

#  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 

#  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 

#  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