WebSVN - shark - Blame - Rev 97 - /shark/tags/rel_0

Rev	Author	Line No.	Line
97	giacomo	1	/* pngconf.h - machine configurable file for libpng
		2	*
		3	* libpng 1.2.5 - October 3, 2002
		4	* For conditions of distribution and use, see copyright notice in png.h
		5	* Copyright (c) 1998-2002 Glenn Randers-Pehrson
		6	* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
		7	* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
		8	*/
		9
		10	/* Any machine specific code is near the front of this file, so if you
		11	* are configuring libpng for a machine, you may want to read the section
		12	* starting here down to where it starts to typedef png_color, png_text,
		13	* and png_info.
		14	*/
		15
		16	#ifndef PNGCONF_H
		17	#define PNGCONF_H
		18
		19	/* This is the size of the compression buffer, and thus the size of
		20	* an IDAT chunk. Make this whatever size you feel is best for your
		21	* machine. One of these will be allocated per png_struct. When this
		22	* is full, it writes the data to the disk, and does some other
		23	* calculations. Making this an extremely small size will slow
		24	* the library down, but you may want to experiment to determine
		25	* where it becomes significant, if you are concerned with memory
		26	* usage. Note that zlib allocates at least 32Kb also. For readers,
		27	* this describes the size of the buffer available to read the data in.
		28	* Unless this gets smaller than the size of a row (compressed),
		29	* it should not make much difference how big this is.
		30	*/
		31
		32	#ifndef PNG_ZBUF_SIZE
		33	# define PNG_ZBUF_SIZE 8192
		34	#endif
		35
		36	/* Enable if you want a write-only libpng */
		37
		38	#ifndef PNG_NO_READ_SUPPORTED
		39	# define PNG_READ_SUPPORTED
		40	#endif
		41
		42	/* Enable if you want a read-only libpng */
		43
		44	#ifndef PNG_NO_WRITE_SUPPORTED
		45	# define PNG_WRITE_SUPPORTED
		46	#endif
		47
		48	/* Enabled by default in 1.2.0. You can disable this if you don't need to
		49	support PNGs that are embedded in MNG datastreams */
		50	#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
		51	# ifndef PNG_MNG_FEATURES_SUPPORTED
		52	# define PNG_MNG_FEATURES_SUPPORTED
		53	# endif
		54	#endif
		55
		56	#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
		57	# ifndef PNG_FLOATING_POINT_SUPPORTED
		58	# define PNG_FLOATING_POINT_SUPPORTED
		59	# endif
		60	#endif
		61
		62	/* If you are running on a machine where you cannot allocate more
		63	* than 64K of memory at once, uncomment this. While libpng will not
		64	* normally need that much memory in a chunk (unless you load up a very
		65	* large file), zlib needs to know how big of a chunk it can use, and
		66	* libpng thus makes sure to check any memory allocation to verify it
		67	* will fit into memory.
		68	#define PNG_MAX_MALLOC_64K
		69	*/
		70	#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
		71	# define PNG_MAX_MALLOC_64K
		72	#endif
		73
		74	/* Special munging to support doing things the 'cygwin' way:
		75	* 'Normal' png-on-win32 defines/defaults:
		76	* PNG_BUILD_DLL -- building dll
		77	* PNG_USE_DLL -- building an application, linking to dll
		78	* (no define) -- building static library, or building an
		79	* application and linking to the static lib
		80	* 'Cygwin' defines/defaults:
		81	* PNG_BUILD_DLL -- (ignored) building the dll
		82	* (no define) -- (ignored) building an application, linking to the dll
		83	* PNG_STATIC -- (ignored) building the static lib, or building an
		84	* application that links to the static lib.
		85	* ALL_STATIC -- (ignored) building various static libs, or building an
		86	* application that links to the static libs.
		87	* Thus,
		88	* a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
		89	* this bit of #ifdefs will define the 'correct' config variables based on
		90	* that. If a cygwin user wants to define 'PNG_USE_DLL' that's okay, but
		91	* unnecessary.
		92	*
		93	* Also, the precedence order is:
		94	* ALL_STATIC (since we can't #undef something outside our namespace)
		95	* PNG_BUILD_DLL
		96	* PNG_STATIC
		97	* (nothing) == PNG_USE_DLL
		98	*
		99	* CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
		100	* of auto-import in binutils, we no longer need to worry about
		101	* __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
		102	* we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
		103	* to __declspec() stuff. However, we DO need to worry about
		104	* PNG_BUILD_DLL and PNG_STATIC because those change some defaults
		105	* such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
		106	*/
		107	#if defined(__CYGWIN__)
		108	# if defined(ALL_STATIC)
		109	# if defined(PNG_BUILD_DLL)
		110	# undef PNG_BUILD_DLL
		111	# endif
		112	# if defined(PNG_USE_DLL)
		113	# undef PNG_USE_DLL
		114	# endif
		115	# if defined(PNG_DLL)
		116	# undef PNG_DLL
		117	# endif
		118	# if !defined(PNG_STATIC)
		119	# define PNG_STATIC
		120	# endif
		121	# else
		122	# if defined (PNG_BUILD_DLL)
		123	# if defined(PNG_STATIC)
		124	# undef PNG_STATIC
		125	# endif
		126	# if defined(PNG_USE_DLL)
		127	# undef PNG_USE_DLL
		128	# endif
		129	# if !defined(PNG_DLL)
		130	# define PNG_DLL
		131	# endif
		132	# else
		133	# if defined(PNG_STATIC)
		134	# if defined(PNG_USE_DLL)
		135	# undef PNG_USE_DLL
		136	# endif
		137	# if defined(PNG_DLL)
		138	# undef PNG_DLL
		139	# endif
		140	# else
		141	# if !defined(PNG_USE_DLL)
		142	# define PNG_USE_DLL
		143	# endif
		144	# if !defined(PNG_DLL)
		145	# define PNG_DLL
		146	# endif
		147	# endif
		148	# endif
		149	# endif
		150	#endif
		151
		152	/* This protects us against compilers that run on a windowing system
		153	* and thus don't have or would rather us not use the stdio types:
		154	* stdin, stdout, and stderr. The only one currently used is stderr
		155	* in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
		156	* prevent these from being compiled and used. #defining PNG_NO_STDIO
		157	* will also prevent these, plus will prevent the entire set of stdio
		158	* macros and functions (FILE *, printf, etc.) from being compiled and used,
		159	* unless (PNG_DEBUG > 0) has been #defined.
		160	*
		161	* #define PNG_NO_CONSOLE_IO
		162	* #define PNG_NO_STDIO
		163	*/
		164
		165	#if defined(_WIN32_WCE)
		166	# include <windows.h>
		167	/* Console I/O functions are not supported on WindowsCE */
		168	# define PNG_NO_CONSOLE_IO
		169	# ifdef PNG_DEBUG
		170	# undef PNG_DEBUG
		171	# endif
		172	#endif
		173
		174	#ifdef PNG_BUILD_DLL
		175	# ifndef PNG_CONSOLE_IO_SUPPORTED
		176	# ifndef PNG_NO_CONSOLE_IO
		177	# define PNG_NO_CONSOLE_IO
		178	# endif
		179	# endif
		180	#endif
		181
		182	# ifdef PNG_NO_STDIO
		183	# ifndef PNG_NO_CONSOLE_IO
		184	# define PNG_NO_CONSOLE_IO
		185	# endif
		186	# ifdef PNG_DEBUG
		187	# if (PNG_DEBUG > 0)
		188	# include <stdio.h>
		189	# endif
		190	# endif
		191	# else
		192	# if !defined(_WIN32_WCE)
		193	/* "stdio.h" functions are not supported on WindowsCE */
		194	# include <stdio.h>
		195	# endif
		196	# endif
		197
		198	/* This macro protects us against machines that don't have function
		199	* prototypes (ie K&R style headers). If your compiler does not handle
		200	* function prototypes, define this macro and use the included ansi2knr.
		201	* I've always been able to use _NO_PROTO as the indicator, but you may
		202	* need to drag the empty declaration out in front of here, or change the
		203	* ifdef to suit your own needs.
		204	*/
		205	#ifndef PNGARG
		206
		207	#ifdef OF /* zlib prototype munger */
		208	# define PNGARG(arglist) OF(arglist)
		209	#else
		210
		211	#ifdef _NO_PROTO
		212	# define PNGARG(arglist) ()
		213	# ifndef PNG_TYPECAST_NULL
		214	# define PNG_TYPECAST_NULL
		215	# endif
		216	#else
		217	# define PNGARG(arglist) arglist
		218	#endif /* _NO_PROTO */
		219
		220	#endif /* OF */
		221
		222	#endif /* PNGARG */
		223
		224	/* Try to determine if we are compiling on a Mac. Note that testing for
		225	* just __MWERKS__ is not good enough, because the Codewarrior is now used
		226	* on non-Mac platforms.
		227	*/
		228	#ifndef MACOS
		229	# if (defined(__MWERKS__) && defined(macintosh)) \|\| defined(applec) \|\| \
		230	defined(THINK_C) \|\| defined(__SC__) \|\| defined(TARGET_OS_MAC)
		231	# define MACOS
		232	# endif
		233	#endif
		234
		235	/* enough people need this for various reasons to include it here */
		236	#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
		237	# include <sys/types.h>
		238	#endif
		239
		240	#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
		241	//# define PNG_SETJMP_SUPPORTED
		242	#endif
		243
		244	#ifdef PNG_SETJMP_SUPPORTED
		245	/* This is an attempt to force a single setjmp behaviour on Linux. If
		246	* the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
		247	*/
		248
		249	# ifdef __linux__
		250	# ifdef _BSD_SOURCE
		251	# define PNG_SAVE_BSD_SOURCE
		252	# undef _BSD_SOURCE
		253	# endif
		254	# ifdef _SETJMP_H
		255	__png.h__ already includes setjmp.h;
		256	__dont__ include it again.;
		257	# endif
		258	# endif /* __linux__ */
		259
		260	/* include setjmp.h for error handling */
		261	//# include <setjmp.h>
		262
		263	# ifdef __linux__
		264	# ifdef PNG_SAVE_BSD_SOURCE
		265	# define _BSD_SOURCE
		266	# undef PNG_SAVE_BSD_SOURCE
		267	# endif
		268	# endif /* __linux__ */
		269	#endif /* PNG_SETJMP_SUPPORTED */
		270
		271	#ifdef BSD
		272	# include <strings.h>
		273	#else
		274	# include <string.h>
		275	#endif
		276
		277	/* Other defines for things like memory and the like can go here. */
		278	#ifdef PNG_INTERNAL
		279
		280	#include <stdlib.h>
		281
		282	/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
		283	* aren't usually used outside the library (as far as I know), so it is
		284	* debatable if they should be exported at all. In the future, when it is
		285	* possible to have run-time registry of chunk-handling functions, some of
		286	* these will be made available again.
		287	#define PNG_EXTERN extern
		288	*/
		289	#define PNG_EXTERN
		290
		291	/* Other defines specific to compilers can go here. Try to keep
		292	* them inside an appropriate ifdef/endif pair for portability.
		293	*/
		294
		295	#if defined(PNG_FLOATING_POINT_SUPPORTED)
		296	# if defined(MACOS)
		297	/* We need to check that <math.h> hasn't already been included earlier
		298	* as it seems it doesn't agree with <fp.h>, yet we should really use
		299	* <fp.h> if possible.
		300	*/
		301	# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
		302	# include <fp.h>
		303	# endif
		304	# else
		305	# include <math.h>
		306	# endif
		307	# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
		308	/* Amiga SAS/C: We must include builtin FPU functions when compiling using
		309	* MATH=68881
		310	*/
		311	# include <m68881.h>
		312	# endif
		313	#endif
		314
		315	/* Codewarrior on NT has linking problems without this. */
		316	#if (defined(__MWERKS__) && defined(WIN32)) \|\| defined(__STDC__)
		317	# define PNG_ALWAYS_EXTERN
		318	#endif
		319
		320	/* For some reason, Borland C++ defines memcmp, etc. in mem.h, not
		321	* stdlib.h like it should (I think). Or perhaps this is a C++
		322	* "feature"?
		323	*/
		324	#ifdef __TURBOC__
		325	# include <mem.h>
		326	# include "alloc.h"
		327	#endif
		328
		329	#if defined(_MSC_VER) && (defined(WIN32) \|\| defined(_Windows) \|\| \
		330	defined(_WINDOWS) \|\| defined(_WIN32) \|\| defined(__WIN32__))
		331	# include <malloc.h>
		332	#endif
		333
		334	/* This controls how fine the dithering gets. As this allocates
		335	* a largish chunk of memory (32K), those who are not as concerned
		336	* with dithering quality can decrease some or all of these.
		337	*/
		338	#ifndef PNG_DITHER_RED_BITS
		339	# define PNG_DITHER_RED_BITS 5
		340	#endif
		341	#ifndef PNG_DITHER_GREEN_BITS
		342	# define PNG_DITHER_GREEN_BITS 5
		343	#endif
		344	#ifndef PNG_DITHER_BLUE_BITS
		345	# define PNG_DITHER_BLUE_BITS 5
		346	#endif
		347
		348	/* This controls how fine the gamma correction becomes when you
		349	* are only interested in 8 bits anyway. Increasing this value
		350	* results in more memory being used, and more pow() functions
		351	* being called to fill in the gamma tables. Don't set this value
		352	* less then 8, and even that may not work (I haven't tested it).
		353	*/
		354
		355	#ifndef PNG_MAX_GAMMA_8
		356	# define PNG_MAX_GAMMA_8 11
		357	#endif
		358
		359	/* This controls how much a difference in gamma we can tolerate before
		360	* we actually start doing gamma conversion.
		361	*/
		362	#ifndef PNG_GAMMA_THRESHOLD
		363	# define PNG_GAMMA_THRESHOLD 0.05
		364	#endif
		365
		366	#endif /* PNG_INTERNAL */
		367
		368	/* The following uses const char * instead of char * for error
		369	* and warning message functions, so some compilers won't complain.
		370	* If you do not want to use const, define PNG_NO_CONST here.
		371	*/
		372
		373	#ifndef PNG_NO_CONST
		374	# define PNG_CONST const
		375	#else
		376	# define PNG_CONST
		377	#endif
		378
		379	/* The following defines give you the ability to remove code from the
		380	* library that you will not be using. I wish I could figure out how to
		381	* automate this, but I can't do that without making it seriously hard
		382	* on the users. So if you are not using an ability, change the #define
		383	* to and #undef, and that part of the library will not be compiled. If
		384	* your linker can't find a function, you may want to make sure the
		385	* ability is defined here. Some of these depend upon some others being
		386	* defined. I haven't figured out all the interactions here, so you may
		387	* have to experiment awhile to get everything to compile. If you are
		388	* creating or using a shared library, you probably shouldn't touch this,
		389	* as it will affect the size of the structures, and this will cause bad
		390	* things to happen if the library and/or application ever change.
		391	*/
		392
		393	/* Any features you will not be using can be undef'ed here */
		394
		395	/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
		396	* to turn it off with "TRANSFORMS_NOT_SUPPORTED" or PNG_NO_*_TRANSFORMS
		397	* on the compile line, then pick and choose which ones to define without
		398	* having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
		399	* if you only want to have a png-compliant reader/writer but don't need
		400	* any of the extra transformations. This saves about 80 kbytes in a
		401	* typical installation of the library. (PNG_NO_* form added in version
		402	* 1.0.1c, for consistency)
		403	*/
		404
		405	/* The size of the png_text structure changed in libpng-1.0.6 when
		406	* iTXt is supported. It is turned off by default, to support old apps
		407	* that malloc the png_text structure instead of calling png_set_text()
		408	* and letting libpng malloc it. It will be turned on by default in
		409	* libpng-1.3.0.
		410	*/
		411
		412	#ifndef PNG_iTXt_SUPPORTED
		413	# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
		414	# define PNG_NO_READ_iTXt
		415	# endif
		416	# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
		417	# define PNG_NO_WRITE_iTXt
		418	# endif
		419	#endif
		420
		421	/* The following support, added after version 1.0.0, can be turned off here en
		422	* masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
		423	* with old applications that require the length of png_struct and png_info
		424	* to remain unchanged.
		425	*/
		426
		427	#ifdef PNG_LEGACY_SUPPORTED
		428	# define PNG_NO_FREE_ME
		429	# define PNG_NO_READ_UNKNOWN_CHUNKS
		430	# define PNG_NO_WRITE_UNKNOWN_CHUNKS
		431	# define PNG_NO_READ_USER_CHUNKS
		432	# define PNG_NO_READ_iCCP
		433	# define PNG_NO_WRITE_iCCP
		434	# define PNG_NO_READ_iTXt
		435	# define PNG_NO_WRITE_iTXt
		436	# define PNG_NO_READ_sCAL
		437	# define PNG_NO_WRITE_sCAL
		438	# define PNG_NO_READ_sPLT
		439	# define PNG_NO_WRITE_sPLT
		440	# define PNG_NO_INFO_IMAGE
		441	# define PNG_NO_READ_RGB_TO_GRAY
		442	# define PNG_NO_READ_USER_TRANSFORM
		443	# define PNG_NO_WRITE_USER_TRANSFORM
		444	# define PNG_NO_USER_MEM
		445	# define PNG_NO_READ_EMPTY_PLTE
		446	# define PNG_NO_MNG_FEATURES
		447	# define PNG_NO_FIXED_POINT_SUPPORTED
		448	#endif
		449
		450	/* Ignore attempt to turn off both floating and fixed point support */
		451	#if !defined(PNG_FLOATING_POINT_SUPPORTED) \|\| \
		452	!defined(PNG_NO_FIXED_POINT_SUPPORTED)
		453	# define PNG_FIXED_POINT_SUPPORTED
		454	#endif
		455
		456	#ifndef PNG_NO_FREE_ME
		457	# define PNG_FREE_ME_SUPPORTED
		458	#endif
		459
		460	#if defined(PNG_READ_SUPPORTED)
		461
		462	#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
		463	!defined(PNG_NO_READ_TRANSFORMS)
		464	# define PNG_READ_TRANSFORMS_SUPPORTED
		465	#endif
		466
		467	#ifdef PNG_READ_TRANSFORMS_SUPPORTED
		468	# ifndef PNG_NO_READ_EXPAND
		469	# define PNG_READ_EXPAND_SUPPORTED
		470	# endif
		471	# ifndef PNG_NO_READ_SHIFT
		472	# define PNG_READ_SHIFT_SUPPORTED
		473	# endif
		474	# ifndef PNG_NO_READ_PACK
		475	# define PNG_READ_PACK_SUPPORTED
		476	# endif
		477	# ifndef PNG_NO_READ_BGR
		478	# define PNG_READ_BGR_SUPPORTED
		479	# endif
		480	# ifndef PNG_NO_READ_SWAP
		481	# define PNG_READ_SWAP_SUPPORTED
		482	# endif
		483	# ifndef PNG_NO_READ_PACKSWAP
		484	# define PNG_READ_PACKSWAP_SUPPORTED
		485	# endif
		486	# ifndef PNG_NO_READ_INVERT
		487	# define PNG_READ_INVERT_SUPPORTED
		488	# endif
		489	# ifndef PNG_NO_READ_DITHER
		490	# define PNG_READ_DITHER_SUPPORTED
		491	# endif
		492	# ifndef PNG_NO_READ_BACKGROUND
		493	# define PNG_READ_BACKGROUND_SUPPORTED
		494	# endif
		495	# ifndef PNG_NO_READ_16_TO_8
		496	# define PNG_READ_16_TO_8_SUPPORTED
		497	# endif
		498	# ifndef PNG_NO_READ_FILLER
		499	# define PNG_READ_FILLER_SUPPORTED
		500	# endif
		501	# ifndef PNG_NO_READ_GAMMA
		502	# define PNG_READ_GAMMA_SUPPORTED
		503	# endif
		504	# ifndef PNG_NO_READ_GRAY_TO_RGB
		505	# define PNG_READ_GRAY_TO_RGB_SUPPORTED
		506	# endif
		507	# ifndef PNG_NO_READ_SWAP_ALPHA
		508	# define PNG_READ_SWAP_ALPHA_SUPPORTED
		509	# endif
		510	# ifndef PNG_NO_READ_INVERT_ALPHA
		511	# define PNG_READ_INVERT_ALPHA_SUPPORTED
		512	# endif
		513	# ifndef PNG_NO_READ_STRIP_ALPHA
		514	# define PNG_READ_STRIP_ALPHA_SUPPORTED
		515	# endif
		516	# ifndef PNG_NO_READ_USER_TRANSFORM
		517	# define PNG_READ_USER_TRANSFORM_SUPPORTED
		518	# endif
		519	# ifndef PNG_NO_READ_RGB_TO_GRAY
		520	# define PNG_READ_RGB_TO_GRAY_SUPPORTED
		521	# endif
		522	#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
		523
		524	#if !defined(PNG_NO_PROGRESSIVE_READ) && \
		525	!defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
		526	# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
		527	#endif /* about interlacing capability! You'll */
		528	/* still have interlacing unless you change the following line: */
		529
		530	#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
		531
		532	#ifndef PNG_NO_READ_COMPOSITE_NODIV
		533	# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
		534	# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
		535	# endif
		536	#endif
		537
		538	/* Deprecated, will be removed from version 2.0.0.
		539	Use PNG_MNG_FEATURES_SUPPORTED instead. */
		540	#ifndef PNG_NO_READ_EMPTY_PLTE
		541	# define PNG_READ_EMPTY_PLTE_SUPPORTED
		542	#endif
		543
		544	#endif /* PNG_READ_SUPPORTED */
		545
		546	#if defined(PNG_WRITE_SUPPORTED)
		547
		548	# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
		549	!defined(PNG_NO_WRITE_TRANSFORMS)
		550	# define PNG_WRITE_TRANSFORMS_SUPPORTED
		551	#endif
		552
		553	#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
		554	# ifndef PNG_NO_WRITE_SHIFT
		555	# define PNG_WRITE_SHIFT_SUPPORTED
		556	# endif
		557	# ifndef PNG_NO_WRITE_PACK
		558	# define PNG_WRITE_PACK_SUPPORTED
		559	# endif
		560	# ifndef PNG_NO_WRITE_BGR
		561	# define PNG_WRITE_BGR_SUPPORTED
		562	# endif
		563	# ifndef PNG_NO_WRITE_SWAP
		564	# define PNG_WRITE_SWAP_SUPPORTED
		565	# endif
		566	# ifndef PNG_NO_WRITE_PACKSWAP
		567	# define PNG_WRITE_PACKSWAP_SUPPORTED
		568	# endif
		569	# ifndef PNG_NO_WRITE_INVERT
		570	# define PNG_WRITE_INVERT_SUPPORTED
		571	# endif
		572	# ifndef PNG_NO_WRITE_FILLER
		573	# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
		574	# endif
		575	# ifndef PNG_NO_WRITE_SWAP_ALPHA
		576	# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
		577	# endif
		578	# ifndef PNG_NO_WRITE_INVERT_ALPHA
		579	# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
		580	# endif
		581	# ifndef PNG_NO_WRITE_USER_TRANSFORM
		582	# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
		583	# endif
		584	#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
		585
		586	#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) \|\| \
		587	defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
		588	# ifndef PNG_NO_USER_TRANSFORM_PTR
		589	# define PNG_USER_TRANSFORM_PTR_SUPPORTED
		590	# endif
		591	#endif
		592
		593	#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
		594	encoders, but can cause trouble
		595	if left undefined */
		596
		597	#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
		598	defined(PNG_FLOATING_POINT_SUPPORTED)
		599	# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
		600	#endif
		601
		602	#ifndef PNG_1_0_X
		603	#ifndef PNG_NO_ERROR_NUMBERS
		604	#define PNG_ERROR_NUMBERS_SUPPORTED
		605	#endif
		606	#endif /* PNG_1_0_X */
		607
		608	#ifndef PNG_NO_WRITE_FLUSH
		609	# define PNG_WRITE_FLUSH_SUPPORTED
		610	#endif
		611
		612	/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
		613	#ifndef PNG_NO_WRITE_EMPTY_PLTE
		614	# define PNG_WRITE_EMPTY_PLTE_SUPPORTED
		615	#endif
		616
		617	#endif /* PNG_WRITE_SUPPORTED */
		618
		619	#ifndef PNG_NO_STDIO
		620	# define PNG_TIME_RFC1123_SUPPORTED
		621	#endif
		622
		623	/* This adds extra functions in pngget.c for accessing data from the
		624	* info pointer (added in version 0.99)
		625	* png_get_image_width()
		626	* png_get_image_height()
		627	* png_get_bit_depth()
		628	* png_get_color_type()
		629	* png_get_compression_type()
		630	* png_get_filter_type()
		631	* png_get_interlace_type()
		632	* png_get_pixel_aspect_ratio()
		633	* png_get_pixels_per_meter()
		634	* png_get_x_offset_pixels()
		635	* png_get_y_offset_pixels()
		636	* png_get_x_offset_microns()
		637	* png_get_y_offset_microns()
		638	*/
		639	#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
		640	# define PNG_EASY_ACCESS_SUPPORTED
		641	#endif
		642
		643	/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
		644	even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */
		645	#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
		646	# ifndef PNG_ASSEMBLER_CODE_SUPPORTED
		647	# define PNG_ASSEMBLER_CODE_SUPPORTED
		648	# endif
		649	# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
		650	# define PNG_MMX_CODE_SUPPORTED
		651	# endif
		652	#endif
		653
		654	/* If you are sure that you don't need thread safety and you are compiling
		655	with PNG_USE_PNGCCRD for an MMX application, you can define this for
		656	faster execution. See pnggccrd.c.
		657	#define PNG_THREAD_UNSAFE_OK
		658	*/
		659
		660	#if !defined(PNG_1_0_X)
		661	#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
		662	# define PNG_USER_MEM_SUPPORTED
		663	#endif
		664	#endif /* PNG_1_0_X */
		665
		666	/* These are currently experimental features, define them if you want */
		667
		668	/* very little testing */
		669	/*
		670	#ifdef PNG_READ_SUPPORTED
		671	# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
		672	# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
		673	# endif
		674	#endif
		675	*/
		676
		677	/* This is only for PowerPC big-endian and 680x0 systems */
		678	/* some testing */
		679	/*
		680	#ifdef PNG_READ_SUPPORTED
		681	# ifndef PNG_PNG_READ_BIG_ENDIAN_SUPPORTED
		682	# define PNG_READ_BIG_ENDIAN_SUPPORTED
		683	# endif
		684	#endif
		685	*/
		686
		687	/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
		688	/*
		689	#define PNG_NO_POINTER_INDEXING
		690	*/
		691
		692	/* These functions are turned off by default, as they will be phased out. */
		693	/*
		694	#define PNG_USELESS_TESTS_SUPPORTED
		695	#define PNG_CORRECT_PALETTE_SUPPORTED
		696	*/
		697
		698	/* Any chunks you are not interested in, you can undef here. The
		699	* ones that allocate memory may be expecially important (hIST,
		700	* tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
		701	* a bit smaller.
		702	*/
		703
		704	#if defined(PNG_READ_SUPPORTED) && \
		705	!defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
		706	!defined(PNG_NO_READ_ANCILLARY_CHUNKS)
		707	# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
		708	#endif
		709
		710	#if defined(PNG_WRITE_SUPPORTED) && \
		711	!defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
		712	!defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
		713	# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
		714	#endif
		715
		716	#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
		717
		718	#ifdef PNG_NO_READ_TEXT
		719	# define PNG_NO_READ_iTXt
		720	# define PNG_NO_READ_tEXt
		721	# define PNG_NO_READ_zTXt
		722	#endif
		723	#ifndef PNG_NO_READ_bKGD
		724	# define PNG_READ_bKGD_SUPPORTED
		725	# define PNG_bKGD_SUPPORTED
		726	#endif
		727	#ifndef PNG_NO_READ_cHRM
		728	# define PNG_READ_cHRM_SUPPORTED
		729	# define PNG_cHRM_SUPPORTED
		730	#endif
		731	#ifndef PNG_NO_READ_gAMA
		732	# define PNG_READ_gAMA_SUPPORTED
		733	# define PNG_gAMA_SUPPORTED
		734	#endif
		735	#ifndef PNG_NO_READ_hIST
		736	# define PNG_READ_hIST_SUPPORTED
		737	# define PNG_hIST_SUPPORTED
		738	#endif
		739	#ifndef PNG_NO_READ_iCCP
		740	# define PNG_READ_iCCP_SUPPORTED
		741	# define PNG_iCCP_SUPPORTED
		742	#endif
		743	#ifndef PNG_NO_READ_iTXt
		744	# ifndef PNG_READ_iTXt_SUPPORTED
		745	# define PNG_READ_iTXt_SUPPORTED
		746	# endif
		747	# ifndef PNG_iTXt_SUPPORTED
		748	# define PNG_iTXt_SUPPORTED
		749	# endif
		750	#endif
		751	#ifndef PNG_NO_READ_oFFs
		752	# define PNG_READ_oFFs_SUPPORTED
		753	# define PNG_oFFs_SUPPORTED
		754	#endif
		755	#ifndef PNG_NO_READ_pCAL
		756	# define PNG_READ_pCAL_SUPPORTED
		757	# define PNG_pCAL_SUPPORTED
		758	#endif
		759	#ifndef PNG_NO_READ_sCAL
		760	# define PNG_READ_sCAL_SUPPORTED
		761	# define PNG_sCAL_SUPPORTED
		762	#endif
		763	#ifndef PNG_NO_READ_pHYs
		764	# define PNG_READ_pHYs_SUPPORTED
		765	# define PNG_pHYs_SUPPORTED
		766	#endif
		767	#ifndef PNG_NO_READ_sBIT
		768	# define PNG_READ_sBIT_SUPPORTED
		769	# define PNG_sBIT_SUPPORTED
		770	#endif
		771	#ifndef PNG_NO_READ_sPLT
		772	# define PNG_READ_sPLT_SUPPORTED
		773	# define PNG_sPLT_SUPPORTED
		774	#endif
		775	#ifndef PNG_NO_READ_sRGB
		776	# define PNG_READ_sRGB_SUPPORTED
		777	# define PNG_sRGB_SUPPORTED
		778	#endif
		779	#ifndef PNG_NO_READ_tEXt
		780	# define PNG_READ_tEXt_SUPPORTED
		781	# define PNG_tEXt_SUPPORTED
		782	#endif
		783	#ifndef PNG_NO_READ_tIME
		784	# define PNG_READ_tIME_SUPPORTED
		785	# define PNG_tIME_SUPPORTED
		786	#endif
		787	#ifndef PNG_NO_READ_tRNS
		788	# define PNG_READ_tRNS_SUPPORTED
		789	# define PNG_tRNS_SUPPORTED
		790	#endif
		791	#ifndef PNG_NO_READ_zTXt
		792	# define PNG_READ_zTXt_SUPPORTED
		793	# define PNG_zTXt_SUPPORTED
		794	#endif
		795	#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
		796	# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
		797	# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
		798	# define PNG_UNKNOWN_CHUNKS_SUPPORTED
		799	# endif
		800	# ifndef PNG_NO_HANDLE_AS_UNKNOWN
		801	# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
		802	# endif
		803	#endif
		804	#if !defined(PNG_NO_READ_USER_CHUNKS) && \
		805	defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
		806	# define PNG_READ_USER_CHUNKS_SUPPORTED
		807	# define PNG_USER_CHUNKS_SUPPORTED
		808	# ifdef PNG_NO_READ_UNKNOWN_CHUNKS
		809	# undef PNG_NO_READ_UNKNOWN_CHUNKS
		810	# endif
		811	# ifdef PNG_NO_HANDLE_AS_UNKNOWN
		812	# undef PNG_NO_HANDLE_AS_UNKNOWN
		813	# endif
		814	#endif
		815	#ifndef PNG_NO_READ_OPT_PLTE
		816	# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
		817	#endif /* optional PLTE chunk in RGB and RGBA images */
		818	#if defined(PNG_READ_iTXt_SUPPORTED) \|\| defined(PNG_READ_tEXt_SUPPORTED) \|\| \
		819	defined(PNG_READ_zTXt_SUPPORTED)
		820	# define PNG_READ_TEXT_SUPPORTED
		821	# define PNG_TEXT_SUPPORTED
		822	#endif
		823
		824	#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
		825
		826	#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
		827
		828	#ifdef PNG_NO_WRITE_TEXT
		829	# define PNG_NO_WRITE_iTXt
		830	# define PNG_NO_WRITE_tEXt
		831	# define PNG_NO_WRITE_zTXt
		832	#endif
		833	#ifndef PNG_NO_WRITE_bKGD
		834	# define PNG_WRITE_bKGD_SUPPORTED
		835	# ifndef PNG_bKGD_SUPPORTED
		836	# define PNG_bKGD_SUPPORTED
		837	# endif
		838	#endif
		839	#ifndef PNG_NO_WRITE_cHRM
		840	# define PNG_WRITE_cHRM_SUPPORTED
		841	# ifndef PNG_cHRM_SUPPORTED
		842	# define PNG_cHRM_SUPPORTED
		843	# endif
		844	#endif
		845	#ifndef PNG_NO_WRITE_gAMA
		846	# define PNG_WRITE_gAMA_SUPPORTED
		847	# ifndef PNG_gAMA_SUPPORTED
		848	# define PNG_gAMA_SUPPORTED
		849	# endif
		850	#endif
		851	#ifndef PNG_NO_WRITE_hIST
		852	# define PNG_WRITE_hIST_SUPPORTED
		853	# ifndef PNG_hIST_SUPPORTED
		854	# define PNG_hIST_SUPPORTED
		855	# endif
		856	#endif
		857	#ifndef PNG_NO_WRITE_iCCP
		858	# define PNG_WRITE_iCCP_SUPPORTED
		859	# ifndef PNG_iCCP_SUPPORTED
		860	# define PNG_iCCP_SUPPORTED
		861	# endif
		862	#endif
		863	#ifndef PNG_NO_WRITE_iTXt
		864	# ifndef PNG_WRITE_iTXt_SUPPORTED
		865	# define PNG_WRITE_iTXt_SUPPORTED
		866	# endif
		867	# ifndef PNG_iTXt_SUPPORTED
		868	# define PNG_iTXt_SUPPORTED
		869	# endif
		870	#endif
		871	#ifndef PNG_NO_WRITE_oFFs
		872	# define PNG_WRITE_oFFs_SUPPORTED
		873	# ifndef PNG_oFFs_SUPPORTED
		874	# define PNG_oFFs_SUPPORTED
		875	# endif
		876	#endif
		877	#ifndef PNG_NO_WRITE_pCAL
		878	# define PNG_WRITE_pCAL_SUPPORTED
		879	# ifndef PNG_pCAL_SUPPORTED
		880	# define PNG_pCAL_SUPPORTED
		881	# endif
		882	#endif
		883	#ifndef PNG_NO_WRITE_sCAL
		884	# define PNG_WRITE_sCAL_SUPPORTED
		885	# ifndef PNG_sCAL_SUPPORTED
		886	# define PNG_sCAL_SUPPORTED
		887	# endif
		888	#endif
		889	#ifndef PNG_NO_WRITE_pHYs
		890	# define PNG_WRITE_pHYs_SUPPORTED
		891	# ifndef PNG_pHYs_SUPPORTED
		892	# define PNG_pHYs_SUPPORTED
		893	# endif
		894	#endif
		895	#ifndef PNG_NO_WRITE_sBIT
		896	# define PNG_WRITE_sBIT_SUPPORTED
		897	# ifndef PNG_sBIT_SUPPORTED
		898	# define PNG_sBIT_SUPPORTED
		899	# endif
		900	#endif
		901	#ifndef PNG_NO_WRITE_sPLT
		902	# define PNG_WRITE_sPLT_SUPPORTED
		903	# ifndef PNG_sPLT_SUPPORTED
		904	# define PNG_sPLT_SUPPORTED
		905	# endif
		906	#endif
		907	#ifndef PNG_NO_WRITE_sRGB
		908	# define PNG_WRITE_sRGB_SUPPORTED
		909	# ifndef PNG_sRGB_SUPPORTED
		910	# define PNG_sRGB_SUPPORTED
		911	# endif
		912	#endif
		913	#ifndef PNG_NO_WRITE_tEXt
		914	# define PNG_WRITE_tEXt_SUPPORTED
		915	# ifndef PNG_tEXt_SUPPORTED
		916	# define PNG_tEXt_SUPPORTED
		917	# endif
		918	#endif
		919	#ifndef PNG_NO_WRITE_tIME
		920	//# define PNG_WRITE_tIME_SUPPORTED
		921	# ifndef PNG_tIME_SUPPORTED
		922	//# define PNG_tIME_SUPPORTED
		923	# endif
		924	#endif
		925	#ifndef PNG_NO_WRITE_tRNS
		926	# define PNG_WRITE_tRNS_SUPPORTED
		927	# ifndef PNG_tRNS_SUPPORTED
		928	# define PNG_tRNS_SUPPORTED
		929	# endif
		930	#endif
		931	#ifndef PNG_NO_WRITE_zTXt
		932	# define PNG_WRITE_zTXt_SUPPORTED
		933	# ifndef PNG_zTXt_SUPPORTED
		934	# define PNG_zTXt_SUPPORTED
		935	# endif
		936	#endif
		937	#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
		938	# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
		939	# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
		940	# define PNG_UNKNOWN_CHUNKS_SUPPORTED
		941	# endif
		942	# ifndef PNG_NO_HANDLE_AS_UNKNOWN
		943	# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
		944	# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
		945	# endif
		946	# endif
		947	#endif
		948	#if defined(PNG_WRITE_iTXt_SUPPORTED) \|\| defined(PNG_WRITE_tEXt_SUPPORTED) \|\| \
		949	defined(PNG_WRITE_zTXt_SUPPORTED)
		950	# define PNG_WRITE_TEXT_SUPPORTED
		951	# ifndef PNG_TEXT_SUPPORTED
		952	# define PNG_TEXT_SUPPORTED
		953	# endif
		954	#endif
		955
		956	#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
		957
		958	/* Turn this off to disable png_read_png() and
		959	* png_write_png() and leave the row_pointers member
		960	* out of the info structure.
		961	*/
		962	#ifndef PNG_NO_INFO_IMAGE
		963	# define PNG_INFO_IMAGE_SUPPORTED
		964	#endif
		965
		966	/* need the time information for reading tIME chunks */
		967	#if defined(PNG_tIME_SUPPORTED)
		968	# if !defined(_WIN32_WCE)
		969	/* "time.h" functions are not supported on WindowsCE */
		970	# include <time.h>
		971	# endif
		972	#endif
		973
		974	/* Some typedefs to get us started. These should be safe on most of the
		975	* common platforms. The typedefs should be at least as large as the
		976	* numbers suggest (a png_uint_32 must be at least 32 bits long), but they
		977	* don't have to be exactly that size. Some compilers dislike passing
		978	* unsigned shorts as function parameters, so you may be better off using
		979	* unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
		980	* want to have unsigned int for png_uint_32 instead of unsigned long.
		981	*/
		982
		983	typedef unsigned long png_uint_32;
		984	typedef long png_int_32;
		985	typedef unsigned short png_uint_16;
		986	typedef short png_int_16;
		987	typedef unsigned char png_byte;
		988
		989	/* This is usually size_t. It is typedef'ed just in case you need it to
		990	change (I'm not sure if you will or not, so I thought I'd be safe) */
		991	typedef size_t png_size_t;
		992
		993	/* The following is needed for medium model support. It cannot be in the
		994	* PNG_INTERNAL section. Needs modification for other compilers besides
		995	* MSC. Model independent support declares all arrays and pointers to be
		996	* large using the far keyword. The zlib version used must also support
		997	* model independent data. As of version zlib 1.0.4, the necessary changes
		998	* have been made in zlib. The USE_FAR_KEYWORD define triggers other
		999	* changes that are needed. (Tim Wegner)
		1000	*/
		1001
		1002	/* Separate compiler dependencies (problem here is that zlib.h always
		1003	defines FAR. (SJT) */
		1004	#ifdef __BORLANDC__
		1005	# if defined(__LARGE__) \|\| defined(__HUGE__) \|\| defined(__COMPACT__)
		1006	# define LDATA 1
		1007	# else
		1008	# define LDATA 0
		1009	# endif
		1010	/* GRR: why is Cygwin in here? Cygwin is not Borland C... */
		1011	# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
		1012	# define PNG_MAX_MALLOC_64K
		1013	# if (LDATA != 1)
		1014	# ifndef FAR
		1015	# define FAR __far
		1016	# endif
		1017	# define USE_FAR_KEYWORD
		1018	# endif /* LDATA != 1 */
		1019	/* Possibly useful for moving data out of default segment.
		1020	* Uncomment it if you want. Could also define FARDATA as
		1021	* const if your compiler supports it. (SJT)
		1022	# define FARDATA FAR
		1023	*/
		1024	# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
		1025	#endif /* __BORLANDC__ */
		1026
		1027
		1028	/* Suggest testing for specific compiler first before testing for
		1029	* FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
		1030	* making reliance oncertain keywords suspect. (SJT)
		1031	*/
		1032
		1033	/* MSC Medium model */
		1034	#if defined(FAR)
		1035	# if defined(M_I86MM)
		1036	# define USE_FAR_KEYWORD
		1037	# define FARDATA FAR
		1038	# include <dos.h>
		1039	# endif
		1040	#endif
		1041
		1042	/* SJT: default case */
		1043	#ifndef FAR
		1044	# define FAR
		1045	#endif
		1046
		1047	/* At this point FAR is always defined */
		1048	#ifndef FARDATA
		1049	# define FARDATA
		1050	#endif
		1051
		1052	/* Typedef for floating-point numbers that are converted
		1053	to fixed-point with a multiple of 100,000, e.g., int_gamma */
		1054	typedef png_int_32 png_fixed_point;
		1055
		1056	/* Add typedefs for pointers */
		1057	typedef void FAR * png_voidp;
		1058	typedef png_byte FAR * png_bytep;
		1059	typedef png_uint_32 FAR * png_uint_32p;
		1060	typedef png_int_32 FAR * png_int_32p;
		1061	typedef png_uint_16 FAR * png_uint_16p;
		1062	typedef png_int_16 FAR * png_int_16p;
		1063	typedef PNG_CONST char FAR * png_const_charp;
		1064	typedef char FAR * png_charp;
		1065	typedef png_fixed_point FAR * png_fixed_point_p;
		1066
		1067	#ifndef PNG_NO_STDIO
		1068	#if defined(_WIN32_WCE)
		1069	typedef HANDLE png_FILE_p;
		1070	#else
		1071	typedef FILE * png_FILE_p;
		1072	#endif
		1073	#endif
		1074
		1075	#ifdef PNG_FLOATING_POINT_SUPPORTED
		1076	typedef double FAR * png_doublep;
		1077	#endif
		1078
		1079	/* Pointers to pointers; i.e. arrays */
		1080	typedef png_byte FAR * FAR * png_bytepp;
		1081	typedef png_uint_32 FAR * FAR * png_uint_32pp;
		1082	typedef png_int_32 FAR * FAR * png_int_32pp;
		1083	typedef png_uint_16 FAR * FAR * png_uint_16pp;
		1084	typedef png_int_16 FAR * FAR * png_int_16pp;
		1085	typedef PNG_CONST char FAR * FAR * png_const_charpp;
		1086	typedef char FAR * FAR * png_charpp;
		1087	typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
		1088	#ifdef PNG_FLOATING_POINT_SUPPORTED
		1089	typedef double FAR * FAR * png_doublepp;
		1090	#endif
		1091
		1092	/* Pointers to pointers to pointers; i.e., pointer to array */
		1093	typedef char FAR * FAR * FAR * png_charppp;
		1094
		1095	/* libpng typedefs for types in zlib. If zlib changes
		1096	* or another compression library is used, then change these.
		1097	* Eliminates need to change all the source files.
		1098	*/
		1099	typedef charf * png_zcharp;
		1100	typedef charf * FAR * png_zcharpp;
		1101	typedef z_stream FAR * png_zstreamp;
		1102
		1103	/*
		1104	* Define PNG_BUILD_DLL if the module being built is a Windows
		1105	* LIBPNG DLL.
		1106	*
		1107	* Define PNG_USE_DLL if you want to link to the Windows LIBPNG DLL.
		1108	* It is equivalent to Microsoft predefined macro _DLL that is
		1109	* automatically defined when you compile using the share
		1110	* version of the CRT (C Run-Time library)
		1111	*
		1112	* The cygwin mods make this behavior a little different:
		1113	* Define PNG_BUILD_DLL if you are building a dll for use with cygwin
		1114	* Define PNG_STATIC if you are building a static library for use with cygwin,
		1115	* -or- if you are building an application that you want to link to the
		1116	* static library.
		1117	* PNG_USE_DLL is defined by default (no user action needed) unless one of
		1118	* the other flags is defined.
		1119	*/
		1120
		1121	#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) \|\| defined(PNG_USE_DLL))
		1122	# define PNG_DLL
		1123	#endif
		1124	/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
		1125	* When building a static lib, default to no GLOBAL ARRAYS, but allow
		1126	* command-line override
		1127	*/
		1128	#if defined(__CYGWIN__)
		1129	# if !defined(PNG_STATIC)
		1130	# if defined(PNG_USE_GLOBAL_ARRAYS)
		1131	# undef PNG_USE_GLOBAL_ARRAYS
		1132	# endif
		1133	# if !defined(PNG_USE_LOCAL_ARRAYS)
		1134	# define PNG_USE_LOCAL_ARRAYS
		1135	# endif
		1136	# else
		1137	# if defined(PNG_USE_LOCAL_ARRAYS) \|\| defined(PNG_NO_GLOBAL_ARRAYS)
		1138	# if defined(PNG_USE_GLOBAL_ARRAYS)
		1139	# undef PNG_USE_GLOBAL_ARRAYS
		1140	# endif
		1141	# endif
		1142	# endif
		1143	# if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
		1144	# define PNG_USE_LOCAL_ARRAYS
		1145	# endif
		1146	#endif
		1147
		1148	/* Do not use global arrays (helps with building DLL's)
		1149	* They are no longer used in libpng itself, since version 1.0.5c,
		1150	* but might be required for some pre-1.0.5c applications.
		1151	*/
		1152	#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
		1153	# if defined(PNG_NO_GLOBAL_ARRAYS) \|\| (defined(__GNUC__) && defined(PNG_DLL))
		1154	# define PNG_USE_LOCAL_ARRAYS
		1155	# else
		1156	# define PNG_USE_GLOBAL_ARRAYS
		1157	# endif
		1158	#endif
		1159
		1160	#if defined(__CYGWIN__)
		1161	# undef PNGAPI
		1162	# define PNGAPI __cdecl
		1163	# undef PNG_IMPEXP
		1164	# define PNG_IMPEXP
		1165	#endif
		1166
		1167	/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
		1168	* you may get warnings regarding the linkage of png_zalloc and png_zfree.
		1169	* Don't ignore those warnings; you must also reset the default calling
		1170	* convention in your compiler to match your PNGAPI, and you must build
		1171	* zlib and your applications the same way you build libpng.
		1172	*/
		1173
		1174	#ifndef PNGAPI
		1175
		1176	#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
		1177	# ifndef PNG_NO_MODULEDEF
		1178	# define PNG_NO_MODULEDEF
		1179	# endif
		1180	#endif
		1181
		1182	#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
		1183	# define PNG_IMPEXP
		1184	#endif
		1185
		1186	#if defined(PNG_DLL) \|\| defined(_DLL) \|\| defined(__DLL__ ) \|\| \
		1187	(( defined(_Windows) \|\| defined(_WINDOWS) \|\| \
		1188	defined(WIN32) \|\| defined(_WIN32) \|\| defined(__WIN32__) ))
		1189
		1190	# if defined(__GNUC__) \|\| (defined (_MSC_VER) && (_MSC_VER >= 800))
		1191	# define PNGAPI __cdecl
		1192	# else
		1193	# define PNGAPI _cdecl
		1194	# endif
		1195
		1196	# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) \|\| \
		1197
		1198	# define PNG_IMPEXP
		1199	# endif
		1200
		1201	# if !defined(PNG_IMPEXP)
		1202
		1203	# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
		1204	# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
		1205
		1206	/* Borland/Microsoft */
		1207	# if defined(_MSC_VER) \|\| defined(__BORLANDC__)
		1208	# if (_MSC_VER >= 800) \|\| (__BORLANDC__ >= 0x500)
		1209	# define PNG_EXPORT PNG_EXPORT_TYPE1
		1210	# else
		1211	# define PNG_EXPORT PNG_EXPORT_TYPE2
		1212	# if defined(PNG_BUILD_DLL)
		1213	# define PNG_IMPEXP __export
		1214	# else
		1215	# define PNG_IMPEXP /__import / /* doesn't exist AFAIK in
		1216	VC++ */
		1217	# endif /* Exists in Borland C++ for
		1218	C++ classes (== huge) */
		1219	# endif
		1220	# endif
		1221
		1222	# if !defined(PNG_IMPEXP)
		1223	# if defined(PNG_BUILD_DLL)
		1224	# define PNG_IMPEXP __declspec(dllexport)
		1225	# else
		1226	# define PNG_IMPEXP __declspec(dllimport)
		1227	# endif
		1228	# endif
		1229	# endif /* PNG_IMPEXP */
		1230	#else /* !(DLL \|\| non-cygwin WINDOWS) */
		1231	# if (defined(__IBMC__) \|\| defined(IBMCPP__)) && defined(__OS2__)
		1232	# define PNGAPI _System
		1233	# define PNG_IMPEXP
		1234	# else
		1235	# if 0 /* ... other platforms, with other meanings */
		1236	# else
		1237	# define PNGAPI
		1238	# define PNG_IMPEXP
		1239	# endif
		1240	# endif
		1241	#endif
		1242	#endif
		1243
		1244	#ifndef PNGAPI
		1245	# define PNGAPI
		1246	#endif
		1247	#ifndef PNG_IMPEXP
		1248	# define PNG_IMPEXP
		1249	#endif
		1250
		1251	#ifndef PNG_EXPORT
		1252	# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
		1253	#endif
		1254
		1255	#ifdef PNG_USE_GLOBAL_ARRAYS
		1256	# ifndef PNG_EXPORT_VAR
		1257	# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
		1258	# endif
		1259	#endif
		1260
		1261	/* User may want to use these so they are not in PNG_INTERNAL. Any library
		1262	* functions that are passed far data must be model independent.
		1263	*/
		1264
		1265	#ifndef PNG_ABORT
		1266	# define PNG_ABORT() abort()
		1267	#endif
		1268
		1269	#ifdef PNG_SETJMP_SUPPORTED
		1270	# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
		1271	#else
		1272	# define png_jmpbuf(png_ptr) \
		1273	(LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
		1274	#endif
		1275
		1276	#if defined(USE_FAR_KEYWORD) /* memory model independent fns */
		1277	/* use this to make far-to-near assignments */
		1278	# define CHECK 1
		1279	# define NOCHECK 0
		1280	# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
		1281	# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
		1282	# define png_strcpy _fstrcpy
		1283	# define png_strlen _fstrlen
		1284	# define png_memcmp _fmemcmp /* SJT: added */
		1285	# define png_memcpy _fmemcpy
		1286	# define png_memset _fmemset
		1287	#else /* use the usual functions */
		1288	# define CVT_PTR(ptr) (ptr)
		1289	# define CVT_PTR_NOCHECK(ptr) (ptr)
		1290	# define png_strcpy strcpy
		1291	# define png_strlen strlen
		1292	# define png_memcmp memcmp /* SJT: added */
		1293	# define png_memcpy memcpy
		1294	# define png_memset memset
		1295	#endif
		1296	/* End of memory model independent support */
		1297
		1298	/* Just a little check that someone hasn't tried to define something
		1299	* contradictory.
		1300	*/
		1301	#if (PNG_ZBUF_SIZE > 65536) && defined(PNG_MAX_MALLOC_64K)
		1302	# undef PNG_ZBUF_SIZE
		1303	# define PNG_ZBUF_SIZE 65536
		1304	#endif
		1305
		1306	#ifdef PNG_READ_SUPPORTED
		1307	/* Prior to libpng-1.0.9, this block was in pngasmrd.h */
		1308	#if defined(PNG_INTERNAL)
		1309
		1310	/* These are the default thresholds before the MMX code kicks in; if either
		1311	* rowbytes or bitdepth is below the threshold, plain C code is used. These
		1312	* can be overridden at runtime via the png_set_mmx_thresholds() call in
		1313	* libpng 1.2.0 and later. The values below were chosen by Intel.
		1314	*/
		1315
		1316	#ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT
		1317	# define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 128 /* >= */
		1318	#endif
		1319	#ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT
		1320	# define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 9 /* >= */
		1321	#endif
		1322
		1323	/* Set this in the makefile for VC++ on Pentium, not here. */
		1324	/* Platform must be Pentium. Makefile must assemble and load pngvcrd.c .
		1325	* MMX will be detected at run time and used if present.
		1326	*/
		1327	#ifdef PNG_USE_PNGVCRD
		1328	# define PNG_HAVE_ASSEMBLER_COMBINE_ROW
		1329	# define PNG_HAVE_ASSEMBLER_READ_INTERLACE
		1330	# define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
		1331	#endif
		1332
		1333	/* Set this in the makefile for gcc/as on Pentium, not here. */
		1334	/* Platform must be Pentium. Makefile must assemble and load pnggccrd.c .
		1335	* MMX will be detected at run time and used if present.
		1336	*/
		1337	#ifdef PNG_USE_PNGGCCRD
		1338	# define PNG_HAVE_ASSEMBLER_COMBINE_ROW
		1339	# define PNG_HAVE_ASSEMBLER_READ_INTERLACE
		1340	# define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
		1341	#endif
		1342	/* - see pnggccrd.c for info about what is currently enabled */
		1343
		1344	#endif /* PNG_INTERNAL */
		1345	#endif /* PNG_READ_SUPPORTED */
		1346
		1347	#endif /* PNGCONF_H */
		1348

Subversion Repositories shark

(root)/shark/tags/rel_0_5/include/ports/pngconf.h @ 102 - Rev 97