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/* pngconf.h - machine configurable file for libpng

* libpng version 1.2.24 - December 14, 2007

* For conditions of distribution and use, see copyright notice 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

#define PNG_1_2_X

* 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

/* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */

#ifdef PNG_CONFIGURE_LIBPNG

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

* Added at libpng-1.2.8

* 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__ */

#ifndef PNG_VERSION_INFO_ONLY

/* End of material added to libpng-1.2.8 */

/* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble

Restored at libpng-1.2.21 */

#if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \

!defined(PNG_WARN_UNINITIALIZED_ROW)

# define PNG_WARN_UNINITIALIZED_ROW 1

#endif

/* End of material added at libpng-1.2.19/1.2.21 */

/* 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

/* 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

# 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

# else

# if !defined(_WIN32_WCE)

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

# include <stdio.h>

# 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

/* If you encounter a compiler error here, see the explanation

* near the end of INSTALL.

__pngconf.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

# ifndef _BSD_SOURCE

# define _BSD_SOURCE

# endif

# 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

/* This provides the non-ANSI (far) memory allocation routines. */

#if defined(__TURBOC__) && defined(__MSDOS__)

# include <mem.h>

# include <alloc.h>

#endif

/* I have no idea why is this necessary... */

#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 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-1.3.0.

#if defined(PNG_1_0_X) || defined (PNG_1_2_X)

# ifndef PNG_NO_iTXt_SUPPORTED

# define PNG_NO_iTXt_SUPPORTED

# endif

# ifndef PNG_NO_READ_iTXt

# define PNG_NO_READ_iTXt

# endif

# ifndef PNG_NO_WRITE_iTXt

# define PNG_NO_WRITE_iTXt

# endif

#endif

#if !defined(PNG_NO_iTXt_SUPPORTED)

# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)

# define PNG_READ_iTXt

# endif

# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)

# define PNG_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_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 in 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

#if defined(PNG_1_0_X) || defined (PNG_1_2_X)

/* 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_NO_WRITE_INTERLACING_SUPPORTED) && \

!defined(PNG_WRITE_INTERLACING_SUPPORTED)

#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant

encoders, but can cause trouble

if left undefined */

#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_1_0_X) || defined (PNG_1_2_X)

/* 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_1_0_X

# ifndef PNG_NO_ERROR_NUMBERS

# define PNG_ERROR_NUMBERS_SUPPORTED

# endif

#endif /* PNG_1_0_X */

#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

#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

* and removed from version 1.2.20. The following will be removed

* from libpng-1.4.0

#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)

# ifndef PNG_OPTIMIZED_CODE_SUPPORTED

# define PNG_OPTIMIZED_CODE_SUPPORTED

# endif

#endif

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

# ifndef PNG_ASSEMBLER_CODE_SUPPORTED

# define PNG_ASSEMBLER_CODE_SUPPORTED

# endif

# if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)

/* work around 64-bit gcc compiler bugs in gcc-3.x */

# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)

# define PNG_NO_MMX_CODE

# endif

# if defined(__APPLE__)

# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)

# define PNG_NO_MMX_CODE

# endif

# if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))

# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)

# define PNG_NO_MMX_CODE

# endif

# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)

# define PNG_MMX_CODE_SUPPORTED

# endif

#endif

/* end of obsolete code to be removed from libpng-1.4.0 */

#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 */

/* Added at libpng-1.2.6 */

#if !defined(PNG_1_0_X)

#ifndef PNG_SET_USER_LIMITS_SUPPORTED

#if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)

# define PNG_SET_USER_LIMITS_SUPPORTED

#endif

#endif /* PNG_1_0_X */

/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter

* how large, set these 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

/* 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 */

#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED

# define PNG_READ_BIG_ENDIAN_SUPPORTED

#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

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