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source: bootcd/isolinux/syslinux-6.03/com32/include/pngconf.h

Last change on this file was e16e8f2, checked in by Edwin Eefting <edwin@datux.nl>, 3 years ago
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2	/* pngconf.h - machine configurable file for libpng
3	*
4	* libpng version 1.2.44 - June 26, 2010
5	* Copyright (c) 1998-2010 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	* This code is released under the libpng license.
10	* For conditions of distribution and use, see the disclaimer
11	* and license in png.h
12	*/
13
14	/* Any machine specific code is near the front of this file, so if you
15	* are configuring libpng for a machine, you may want to read the section
16	* starting here down to where it starts to typedef png_color, png_text,
17	* and png_info.
18	*/
19
20	#ifndef PNGCONF_H
21	#define PNGCONF_H
22
23	#define PNG_1_2_X
24
25	/*
26	* PNG_USER_CONFIG has to be defined on the compiler command line. This
27	* includes the resource compiler for Windows DLL configurations.
28	*/
29	#ifdef PNG_USER_CONFIG
30	# ifndef PNG_USER_PRIVATEBUILD
31	# define PNG_USER_PRIVATEBUILD
32	# endif
33	#include "pngusr.h"
34	#endif
35
36	/* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
37	#ifdef PNG_CONFIGURE_LIBPNG
38	#ifdef HAVE_CONFIG_H
39	#include "config.h"
40	#endif
41	#endif
42
43	/*
44	* Added at libpng-1.2.8
45	*
46	* If you create a private DLL you need to define in "pngusr.h" the followings:
47	* #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
48	* the DLL was built>
49	* e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
50	* #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
51	* distinguish your DLL from those of the official release. These
52	* correspond to the trailing letters that come after the version
53	* number and must match your private DLL name>
54	* e.g. // private DLL "libpng13gx.dll"
55	* #define PNG_USER_DLLFNAME_POSTFIX "gx"
56	*
57	* The following macros are also at your disposal if you want to complete the
58	* DLL VERSIONINFO structure.
59	* - PNG_USER_VERSIONINFO_COMMENTS
60	* - PNG_USER_VERSIONINFO_COMPANYNAME
61	* - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
62	*/
63
64	#ifdef __STDC__
65	#ifdef SPECIALBUILD
66	# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
67	are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
68	#endif
69
70	#ifdef PRIVATEBUILD
71	# pragma message("PRIVATEBUILD is deprecated.\
72	Use PNG_USER_PRIVATEBUILD instead.")
73	# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
74	#endif
75	#endif /* __STDC__ */
76
77	#ifndef PNG_VERSION_INFO_ONLY
78
79	/* End of material added to libpng-1.2.8 */
80
81	/* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble
82	Restored at libpng-1.2.21 */
83	#if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \
84	!defined(PNG_WARN_UNINITIALIZED_ROW)
85	# define PNG_WARN_UNINITIALIZED_ROW 1
86	#endif
87	/* End of material added at libpng-1.2.19/1.2.21 */
88
89	/* This is the size of the compression buffer, and thus the size of
90	* an IDAT chunk. Make this whatever size you feel is best for your
91	* machine. One of these will be allocated per png_struct. When this
92	* is full, it writes the data to the disk, and does some other
93	* calculations. Making this an extremely small size will slow
94	* the library down, but you may want to experiment to determine
95	* where it becomes significant, if you are concerned with memory
96	* usage. Note that zlib allocates at least 32Kb also. For readers,
97	* this describes the size of the buffer available to read the data in.
98	* Unless this gets smaller than the size of a row (compressed),
99	* it should not make much difference how big this is.
100	*/
101
102	#ifndef PNG_ZBUF_SIZE
103	# define PNG_ZBUF_SIZE 8192
104	#endif
105
106	/* Enable if you want a write-only libpng */
107
108	#ifndef PNG_NO_READ_SUPPORTED
109	# define PNG_READ_SUPPORTED
110	#endif
111
112	/* Enable if you want a read-only libpng */
113
114	#ifndef PNG_NO_WRITE_SUPPORTED
115	# define PNG_WRITE_SUPPORTED
116	#endif
117
118	/* Enabled in 1.2.41. */
119	#ifdef PNG_ALLOW_BENIGN_ERRORS
120	# define png_benign_error png_warning
121	# define png_chunk_benign_error png_chunk_warning
122	#else
123	# ifndef PNG_BENIGN_ERRORS_SUPPORTED
124	# define png_benign_error png_error
125	# define png_chunk_benign_error png_chunk_error
126	# endif
127	#endif
128
129	/* Added in libpng-1.2.41 */
130	#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
131	# define PNG_WARNINGS_SUPPORTED
132	#endif
133
134	#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
135	# define PNG_ERROR_TEXT_SUPPORTED
136	#endif
137
138	#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
139	# define PNG_CHECK_cHRM_SUPPORTED
140	#endif
141
142	/* Enabled by default in 1.2.0. You can disable this if you don't need to
143	* support PNGs that are embedded in MNG datastreams
144	*/
145	#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
146	# ifndef PNG_MNG_FEATURES_SUPPORTED
147	# define PNG_MNG_FEATURES_SUPPORTED
148	# endif
149	#endif
150
151	#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
152	# ifndef PNG_FLOATING_POINT_SUPPORTED
153	# define PNG_FLOATING_POINT_SUPPORTED
154	# endif
155	#endif
156
157	/* If you are running on a machine where you cannot allocate more
158	* than 64K of memory at once, uncomment this. While libpng will not
159	* normally need that much memory in a chunk (unless you load up a very
160	* large file), zlib needs to know how big of a chunk it can use, and
161	* libpng thus makes sure to check any memory allocation to verify it
162	* will fit into memory.
163	#define PNG_MAX_MALLOC_64K
164	*/
165	#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
166	# define PNG_MAX_MALLOC_64K
167	#endif
168
169	/* Special munging to support doing things the 'cygwin' way:
170	* 'Normal' png-on-win32 defines/defaults:
171	* PNG_BUILD_DLL -- building dll
172	* PNG_USE_DLL -- building an application, linking to dll
173	* (no define) -- building static library, or building an
174	* application and linking to the static lib
175	* 'Cygwin' defines/defaults:
176	* PNG_BUILD_DLL -- (ignored) building the dll
177	* (no define) -- (ignored) building an application, linking to the dll
178	* PNG_STATIC -- (ignored) building the static lib, or building an
179	* application that links to the static lib.
180	* ALL_STATIC -- (ignored) building various static libs, or building an
181	* application that links to the static libs.
182	* Thus,
183	* a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
184	* this bit of #ifdefs will define the 'correct' config variables based on
185	* that. If a cygwin user wants to define 'PNG_USE_DLL' that's okay, but
186	* unnecessary.
187	*
188	* Also, the precedence order is:
189	* ALL_STATIC (since we can't #undef something outside our namespace)
190	* PNG_BUILD_DLL
191	* PNG_STATIC
192	* (nothing) == PNG_USE_DLL
193	*
194	* CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
195	* of auto-import in binutils, we no longer need to worry about
196	* __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
197	* we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
198	* to __declspec() stuff. However, we DO need to worry about
199	* PNG_BUILD_DLL and PNG_STATIC because those change some defaults
200	* such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
201	*/
202	#ifdef __CYGWIN__
203	# ifdef ALL_STATIC
204	# ifdef PNG_BUILD_DLL
205	# undef PNG_BUILD_DLL
206	# endif
207	# ifdef PNG_USE_DLL
208	# undef PNG_USE_DLL
209	# endif
210	# ifdef PNG_DLL
211	# undef PNG_DLL
212	# endif
213	# ifndef PNG_STATIC
214	# define PNG_STATIC
215	# endif
216	# else
217	# ifdef PNG_BUILD_DLL
218	# ifdef PNG_STATIC
219	# undef PNG_STATIC
220	# endif
221	# ifdef PNG_USE_DLL
222	# undef PNG_USE_DLL
223	# endif
224	# ifndef PNG_DLL
225	# define PNG_DLL
226	# endif
227	# else
228	# ifdef PNG_STATIC
229	# ifdef PNG_USE_DLL
230	# undef PNG_USE_DLL
231	# endif
232	# ifdef PNG_DLL
233	# undef PNG_DLL
234	# endif
235	# else
236	# ifndef PNG_USE_DLL
237	# define PNG_USE_DLL
238	# endif
239	# ifndef PNG_DLL
240	# define PNG_DLL
241	# endif
242	# endif
243	# endif
244	# endif
245	#endif
246
247	/* This protects us against compilers that run on a windowing system
248	* and thus don't have or would rather us not use the stdio types:
249	* stdin, stdout, and stderr. The only one currently used is stderr
250	* in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
251	* prevent these from being compiled and used. #defining PNG_NO_STDIO
252	* will also prevent these, plus will prevent the entire set of stdio
253	* macros and functions (FILE *, printf, etc.) from being compiled and used,
254	* unless (PNG_DEBUG > 0) has been #defined.
255	*
256	* #define PNG_NO_CONSOLE_IO
257	* #define PNG_NO_STDIO
258	*/
259
260	#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
261	# define PNG_STDIO_SUPPORTED
262	#endif
263
264	#ifdef _WIN32_WCE
265	# include <windows.h>
266	/* Console I/O functions are not supported on WindowsCE */
267	# define PNG_NO_CONSOLE_IO
268	/* abort() may not be supported on some/all Windows CE platforms */
269	# define PNG_ABORT() exit(-1)
270	# ifdef PNG_DEBUG
271	# undef PNG_DEBUG
272	# endif
273	#endif
274
275	#ifdef PNG_BUILD_DLL
276	# ifndef PNG_CONSOLE_IO_SUPPORTED
277	# ifndef PNG_NO_CONSOLE_IO
278	# define PNG_NO_CONSOLE_IO
279	# endif
280	# endif
281	#endif
282
283	# ifdef PNG_NO_STDIO
284	# ifndef PNG_NO_CONSOLE_IO
285	# define PNG_NO_CONSOLE_IO
286	# endif
287	# ifdef PNG_DEBUG
288	# if (PNG_DEBUG > 0)
289	# include <stdio.h>
290	# endif
291	# endif
292	# else
293	# ifndef _WIN32_WCE
294	/* "stdio.h" functions are not supported on WindowsCE */
295	# include <stdio.h>
296	# endif
297	# endif
298
299	#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
300	# define PNG_CONSOLE_IO_SUPPORTED
301	#endif
302
303	/* This macro protects us against machines that don't have function
304	* prototypes (ie K&R style headers). If your compiler does not handle
305	* function prototypes, define this macro and use the included ansi2knr.
306	* I've always been able to use _NO_PROTO as the indicator, but you may
307	* need to drag the empty declaration out in front of here, or change the
308	* ifdef to suit your own needs.
309	*/
310	#ifndef PNGARG
311
312	#ifdef OF /* zlib prototype munger */
313	# define PNGARG(arglist) OF(arglist)
314	#else
315
316	#ifdef _NO_PROTO
317	# define PNGARG(arglist) ()
318	# ifndef PNG_TYPECAST_NULL
319	# define PNG_TYPECAST_NULL
320	# endif
321	#else
322	# define PNGARG(arglist) arglist
323	#endif /* _NO_PROTO */
324
325
326	#endif /* OF */
327
328	#endif /* PNGARG */
329
330	/* Try to determine if we are compiling on a Mac. Note that testing for
331	* just __MWERKS__ is not good enough, because the Codewarrior is now used
332	* on non-Mac platforms.
333	*/
334	#ifndef MACOS
335	# if (defined(__MWERKS__) && defined(macintosh)) \|\| defined(applec) \|\| \
336	defined(THINK_C) \|\| defined(__SC__) \|\| defined(TARGET_OS_MAC)
337	# define MACOS
338	# endif
339	#endif
340
341	/* enough people need this for various reasons to include it here */
342	#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
343	# include <sys/types.h>
344	#endif
345
346	#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
347	# define PNG_SETJMP_SUPPORTED
348	#endif
349
350	#ifdef PNG_SETJMP_SUPPORTED
351	/* This is an attempt to force a single setjmp behaviour on Linux. If
352	* the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
353	*
354	* You can bypass this test if you know that your application uses exactly
355	* the same setjmp.h that was included when libpng was built. Only define
356	* PNG_SKIP_SETJMP_CHECK while building your application, prior to the
357	* application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
358	* while building a separate libpng library for general use.
359	*/
360
361	# ifndef PNG_SKIP_SETJMP_CHECK
362	# ifdef __linux__
363	# ifdef _BSD_SOURCE
364	# define PNG_SAVE_BSD_SOURCE
365	# undef _BSD_SOURCE
366	# endif
367	# ifdef _SETJMP_H
368	/* If you encounter a compiler error here, see the explanation
369	* near the end of INSTALL.
370	*/
371	__pngconf.h__ in libpng already includes setjmp.h;
372	__dont__ include it again.;
373	# endif
374	# endif /* __linux__ */
375	# endif /* PNG_SKIP_SETJMP_CHECK */
376
377	/* include setjmp.h for error handling */
378	# include <setjmp.h>
379
380	# ifdef __linux__
381	# ifdef PNG_SAVE_BSD_SOURCE
382	# ifndef _BSD_SOURCE
383	# define _BSD_SOURCE
384	# endif
385	# undef PNG_SAVE_BSD_SOURCE
386	# endif
387	# endif /* __linux__ */
388	#endif /* PNG_SETJMP_SUPPORTED */
389
390	#ifdef BSD
391	# include <strings.h>
392	#else
393	# include <string.h>
394	#endif
395
396	/* Other defines for things like memory and the like can go here. */
397	#ifdef PNG_INTERNAL
398
399	#include <stdlib.h>
400
401	/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
402	* aren't usually used outside the library (as far as I know), so it is
403	* debatable if they should be exported at all. In the future, when it is
404	* possible to have run-time registry of chunk-handling functions, some of
405	* these will be made available again.
406	#define PNG_EXTERN extern
407	*/
408	#define PNG_EXTERN
409
410	/* Other defines specific to compilers can go here. Try to keep
411	* them inside an appropriate ifdef/endif pair for portability.
412	*/
413
414	#ifdef PNG_FLOATING_POINT_SUPPORTED
415	# ifdef MACOS
416	/* We need to check that <math.h> hasn't already been included earlier
417	* as it seems it doesn't agree with <fp.h>, yet we should really use
418	* <fp.h> if possible.
419	*/
420	# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
421	# include <fp.h>
422	# endif
423	# else
424	# include <math.h>
425	# endif
426	# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
427	/* Amiga SAS/C: We must include builtin FPU functions when compiling using
428	* MATH=68881
429	*/
430	# include <m68881.h>
431	# endif
432	#endif
433
434	/* Codewarrior on NT has linking problems without this. */
435	#if (defined(__MWERKS__) && defined(WIN32)) \|\| defined(__STDC__)
436	# define PNG_ALWAYS_EXTERN
437	#endif
438
439	/* This provides the non-ANSI (far) memory allocation routines. */
440	#if defined(__TURBOC__) && defined(__MSDOS__)
441	# include <mem.h>
442	# include <alloc.h>
443	#endif
444
445	/* I have no idea why is this necessary... */
446	#if defined(_MSC_VER) && (defined(WIN32) \|\| defined(_Windows) \|\| \
447	defined(_WINDOWS) \|\| defined(_WIN32) \|\| defined(__WIN32__))
448	# include <malloc.h>
449	#endif
450
451	/* This controls how fine the dithering gets. As this allocates
452	* a largish chunk of memory (32K), those who are not as concerned
453	* with dithering quality can decrease some or all of these.
454	*/
455	#ifndef PNG_DITHER_RED_BITS
456	# define PNG_DITHER_RED_BITS 5
457	#endif
458	#ifndef PNG_DITHER_GREEN_BITS
459	# define PNG_DITHER_GREEN_BITS 5
460	#endif
461	#ifndef PNG_DITHER_BLUE_BITS
462	# define PNG_DITHER_BLUE_BITS 5
463	#endif
464
465	/* This controls how fine the gamma correction becomes when you
466	* are only interested in 8 bits anyway. Increasing this value
467	* results in more memory being used, and more pow() functions
468	* being called to fill in the gamma tables. Don't set this value
469	* less then 8, and even that may not work (I haven't tested it).
470	*/
471
472	#ifndef PNG_MAX_GAMMA_8
473	# define PNG_MAX_GAMMA_8 11
474	#endif
475
476	/* This controls how much a difference in gamma we can tolerate before
477	* we actually start doing gamma conversion.
478	*/
479	#ifndef PNG_GAMMA_THRESHOLD
480	# define PNG_GAMMA_THRESHOLD 0.05
481	#endif
482
483	#endif /* PNG_INTERNAL */
484
485	/* The following uses const char * instead of char * for error
486	* and warning message functions, so some compilers won't complain.
487	* If you do not want to use const, define PNG_NO_CONST here.
488	*/
489
490	#ifndef PNG_NO_CONST
491	# define PNG_CONST const
492	#else
493	# define PNG_CONST
494	#endif
495
496	/* The following defines give you the ability to remove code from the
497	* library that you will not be using. I wish I could figure out how to
498	* automate this, but I can't do that without making it seriously hard
499	* on the users. So if you are not using an ability, change the #define
500	* to and #undef, and that part of the library will not be compiled. If
501	* your linker can't find a function, you may want to make sure the
502	* ability is defined here. Some of these depend upon some others being
503	* defined. I haven't figured out all the interactions here, so you may
504	* have to experiment awhile to get everything to compile. If you are
505	* creating or using a shared library, you probably shouldn't touch this,
506	* as it will affect the size of the structures, and this will cause bad
507	* things to happen if the library and/or application ever change.
508	*/
509
510	/* Any features you will not be using can be undef'ed here */
511
512	/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
513	* to turn it off with "TRANSFORMS_NOT_SUPPORTED" or PNG_NO_*_TRANSFORMS
514	* on the compile line, then pick and choose which ones to define without
515	* having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
516	* if you only want to have a png-compliant reader/writer but don't need
517	* any of the extra transformations. This saves about 80 kbytes in a
518	* typical installation of the library. (PNG_NO_* form added in version
519	* 1.0.1c, for consistency)
520	*/
521
522	/* The size of the png_text structure changed in libpng-1.0.6 when
523	* iTXt support was added. iTXt support was turned off by default through
524	* libpng-1.2.x, to support old apps that malloc the png_text structure
525	* instead of calling png_set_text() and letting libpng malloc it. It
526	* will be turned on by default in libpng-1.4.0.
527	*/
528
529	#if defined(PNG_1_0_X) \|\| defined (PNG_1_2_X)
530	# ifndef PNG_NO_iTXt_SUPPORTED
531	# define PNG_NO_iTXt_SUPPORTED
532	# endif
533	# ifndef PNG_NO_READ_iTXt
534	# define PNG_NO_READ_iTXt
535	# endif
536	# ifndef PNG_NO_WRITE_iTXt
537	# define PNG_NO_WRITE_iTXt
538	# endif
539	#endif
540
541	#if !defined(PNG_NO_iTXt_SUPPORTED)
542	# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
543	# define PNG_READ_iTXt
544	# endif
545	# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
546	# define PNG_WRITE_iTXt
547	# endif
548	#endif
549
550	/* The following support, added after version 1.0.0, can be turned off here en
551	* masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
552	* with old applications that require the length of png_struct and png_info
553	* to remain unchanged.
554	*/
555
556	#ifdef PNG_LEGACY_SUPPORTED
557	# define PNG_NO_FREE_ME
558	# define PNG_NO_READ_UNKNOWN_CHUNKS
559	# define PNG_NO_WRITE_UNKNOWN_CHUNKS
560	# define PNG_NO_HANDLE_AS_UNKNOWN
561	# define PNG_NO_READ_USER_CHUNKS
562	# define PNG_NO_READ_iCCP
563	# define PNG_NO_WRITE_iCCP
564	# define PNG_NO_READ_iTXt
565	# define PNG_NO_WRITE_iTXt
566	# define PNG_NO_READ_sCAL
567	# define PNG_NO_WRITE_sCAL
568	# define PNG_NO_READ_sPLT
569	# define PNG_NO_WRITE_sPLT
570	# define PNG_NO_INFO_IMAGE
571	# define PNG_NO_READ_RGB_TO_GRAY
572	# define PNG_NO_READ_USER_TRANSFORM
573	# define PNG_NO_WRITE_USER_TRANSFORM
574	# define PNG_NO_USER_MEM
575	# define PNG_NO_READ_EMPTY_PLTE
576	# define PNG_NO_MNG_FEATURES
577	# define PNG_NO_FIXED_POINT_SUPPORTED
578	#endif
579
580	/* Ignore attempt to turn off both floating and fixed point support */
581	#if !defined(PNG_FLOATING_POINT_SUPPORTED) \|\| \
582	!defined(PNG_NO_FIXED_POINT_SUPPORTED)
583	# define PNG_FIXED_POINT_SUPPORTED
584	#endif
585
586	#ifndef PNG_NO_FREE_ME
587	# define PNG_FREE_ME_SUPPORTED
588	#endif
589
590	#ifdef PNG_READ_SUPPORTED
591
592	#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
593	!defined(PNG_NO_READ_TRANSFORMS)
594	# define PNG_READ_TRANSFORMS_SUPPORTED
595	#endif
596
597	#ifdef PNG_READ_TRANSFORMS_SUPPORTED
598	# ifndef PNG_NO_READ_EXPAND
599	# define PNG_READ_EXPAND_SUPPORTED
600	# endif
601	# ifndef PNG_NO_READ_SHIFT
602	# define PNG_READ_SHIFT_SUPPORTED
603	# endif
604	# ifndef PNG_NO_READ_PACK
605	# define PNG_READ_PACK_SUPPORTED
606	# endif
607	# ifndef PNG_NO_READ_BGR
608	# define PNG_READ_BGR_SUPPORTED
609	# endif
610	# ifndef PNG_NO_READ_SWAP
611	# define PNG_READ_SWAP_SUPPORTED
612	# endif
613	# ifndef PNG_NO_READ_PACKSWAP
614	# define PNG_READ_PACKSWAP_SUPPORTED
615	# endif
616	# ifndef PNG_NO_READ_INVERT
617	# define PNG_READ_INVERT_SUPPORTED
618	# endif
619	# ifndef PNG_NO_READ_DITHER
620	# define PNG_READ_DITHER_SUPPORTED
621	# endif
622	# ifndef PNG_NO_READ_BACKGROUND
623	# define PNG_READ_BACKGROUND_SUPPORTED
624	# endif
625	# ifndef PNG_NO_READ_16_TO_8
626	# define PNG_READ_16_TO_8_SUPPORTED
627	# endif
628	# ifndef PNG_NO_READ_FILLER
629	# define PNG_READ_FILLER_SUPPORTED
630	# endif
631	# ifndef PNG_NO_READ_GAMMA
632	# define PNG_READ_GAMMA_SUPPORTED
633	# endif
634	# ifndef PNG_NO_READ_GRAY_TO_RGB
635	# define PNG_READ_GRAY_TO_RGB_SUPPORTED
636	# endif
637	# ifndef PNG_NO_READ_SWAP_ALPHA
638	# define PNG_READ_SWAP_ALPHA_SUPPORTED
639	# endif
640	# ifndef PNG_NO_READ_INVERT_ALPHA
641	# define PNG_READ_INVERT_ALPHA_SUPPORTED
642	# endif
643	# ifndef PNG_NO_READ_STRIP_ALPHA
644	# define PNG_READ_STRIP_ALPHA_SUPPORTED
645	# endif
646	# ifndef PNG_NO_READ_USER_TRANSFORM
647	# define PNG_READ_USER_TRANSFORM_SUPPORTED
648	# endif
649	# ifndef PNG_NO_READ_RGB_TO_GRAY
650	# define PNG_READ_RGB_TO_GRAY_SUPPORTED
651	# endif
652	#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
653
654	/* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
655	#if !defined(PNG_NO_PROGRESSIVE_READ) && \
656	!defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
657	# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
658	#endif /* about interlacing capability! You'll */
659	/* still have interlacing unless you change the following define: */
660	#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
661
662	/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
663	#if !defined(PNG_NO_SEQUENTIAL_READ) && \
664	!defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
665	!defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
666	# define PNG_SEQUENTIAL_READ_SUPPORTED
667	#endif
668
669	#define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
670
671	#ifndef PNG_NO_READ_COMPOSITE_NODIV
672	# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
673	# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
674	# endif
675	#endif
676
677	#if defined(PNG_1_0_X) \|\| defined (PNG_1_2_X)
678	/* Deprecated, will be removed from version 2.0.0.
679	Use PNG_MNG_FEATURES_SUPPORTED instead. */
680	#ifndef PNG_NO_READ_EMPTY_PLTE
681	# define PNG_READ_EMPTY_PLTE_SUPPORTED
682	#endif
683	#endif
684
685	#endif /* PNG_READ_SUPPORTED */
686
687	#ifdef PNG_WRITE_SUPPORTED
688
689	# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
690	!defined(PNG_NO_WRITE_TRANSFORMS)
691	# define PNG_WRITE_TRANSFORMS_SUPPORTED
692	#endif
693
694	#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
695	# ifndef PNG_NO_WRITE_SHIFT
696	# define PNG_WRITE_SHIFT_SUPPORTED
697	# endif
698	# ifndef PNG_NO_WRITE_PACK
699	# define PNG_WRITE_PACK_SUPPORTED
700	# endif
701	# ifndef PNG_NO_WRITE_BGR
702	# define PNG_WRITE_BGR_SUPPORTED
703	# endif
704	# ifndef PNG_NO_WRITE_SWAP
705	# define PNG_WRITE_SWAP_SUPPORTED
706	# endif
707	# ifndef PNG_NO_WRITE_PACKSWAP
708	# define PNG_WRITE_PACKSWAP_SUPPORTED
709	# endif
710	# ifndef PNG_NO_WRITE_INVERT
711	# define PNG_WRITE_INVERT_SUPPORTED
712	# endif
713	# ifndef PNG_NO_WRITE_FILLER
714	# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
715	# endif
716	# ifndef PNG_NO_WRITE_SWAP_ALPHA
717	# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
718	# endif
719	#ifndef PNG_1_0_X
720	# ifndef PNG_NO_WRITE_INVERT_ALPHA
721	# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
722	# endif
723	#endif
724	# ifndef PNG_NO_WRITE_USER_TRANSFORM
725	# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
726	# endif
727	#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
728
729	#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
730	!defined(PNG_WRITE_INTERLACING_SUPPORTED)
731	#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
732	encoders, but can cause trouble
733	if left undefined */
734	#endif
735
736	#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
737	!defined(PNG_WRITE_WEIGHTED_FILTER) && \
738	defined(PNG_FLOATING_POINT_SUPPORTED)
739	# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
740	#endif
741
742	#ifndef PNG_NO_WRITE_FLUSH
743	# define PNG_WRITE_FLUSH_SUPPORTED
744	#endif
745
746	#if defined(PNG_1_0_X) \|\| defined (PNG_1_2_X)
747	/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
748	#ifndef PNG_NO_WRITE_EMPTY_PLTE
749	# define PNG_WRITE_EMPTY_PLTE_SUPPORTED
750	#endif
751	#endif
752
753	#endif /* PNG_WRITE_SUPPORTED */
754
755	#ifndef PNG_1_0_X
756	# ifndef PNG_NO_ERROR_NUMBERS
757	# define PNG_ERROR_NUMBERS_SUPPORTED
758	# endif
759	#endif /* PNG_1_0_X */
760
761	#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) \|\| \
762	defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
763	# ifndef PNG_NO_USER_TRANSFORM_PTR
764	# define PNG_USER_TRANSFORM_PTR_SUPPORTED
765	# endif
766	#endif
767
768	#ifndef PNG_NO_STDIO
769	# define PNG_TIME_RFC1123_SUPPORTED
770	#endif
771
772	/* This adds extra functions in pngget.c for accessing data from the
773	* info pointer (added in version 0.99)
774	* png_get_image_width()
775	* png_get_image_height()
776	* png_get_bit_depth()
777	* png_get_color_type()
778	* png_get_compression_type()
779	* png_get_filter_type()
780	* png_get_interlace_type()
781	* png_get_pixel_aspect_ratio()
782	* png_get_pixels_per_meter()
783	* png_get_x_offset_pixels()
784	* png_get_y_offset_pixels()
785	* png_get_x_offset_microns()
786	* png_get_y_offset_microns()
787	*/
788	#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
789	# define PNG_EASY_ACCESS_SUPPORTED
790	#endif
791
792	/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
793	* and removed from version 1.2.20. The following will be removed
794	* from libpng-1.4.0
795	*/
796
797	#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
798	# ifndef PNG_OPTIMIZED_CODE_SUPPORTED
799	# define PNG_OPTIMIZED_CODE_SUPPORTED
800	# endif
801	#endif
802
803	#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
804	# ifndef PNG_ASSEMBLER_CODE_SUPPORTED
805	# define PNG_ASSEMBLER_CODE_SUPPORTED
806	# endif
807
808	# if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
809	/* work around 64-bit gcc compiler bugs in gcc-3.x */
810	# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
811	# define PNG_NO_MMX_CODE
812	# endif
813	# endif
814
815	# ifdef __APPLE__
816	# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
817	# define PNG_NO_MMX_CODE
818	# endif
819	# endif
820
821	# if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) \|\| macintosh))
822	# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
823	# define PNG_NO_MMX_CODE
824	# endif
825	# endif
826
827	# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
828	# define PNG_MMX_CODE_SUPPORTED
829	# endif
830
831	#endif
832	/* end of obsolete code to be removed from libpng-1.4.0 */
833
834	/* Added at libpng-1.2.0 */
835	#ifndef PNG_1_0_X
836	#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
837	# define PNG_USER_MEM_SUPPORTED
838	#endif
839	#endif /* PNG_1_0_X */
840
841	/* Added at libpng-1.2.6 */
842	#ifndef PNG_1_0_X
843	# ifndef PNG_SET_USER_LIMITS_SUPPORTED
844	# ifndef PNG_NO_SET_USER_LIMITS
845	# define PNG_SET_USER_LIMITS_SUPPORTED
846	# endif
847	# endif
848	#endif /* PNG_1_0_X */
849
850	/* Added at libpng-1.0.53 and 1.2.43 */
851	#ifndef PNG_USER_LIMITS_SUPPORTED
852	# ifndef PNG_NO_USER_LIMITS
853	# define PNG_USER_LIMITS_SUPPORTED
854	# endif
855	#endif
856
857	/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
858	* how large, set these limits to 0x7fffffffL
859	*/
860	#ifndef PNG_USER_WIDTH_MAX
861	# define PNG_USER_WIDTH_MAX 1000000L
862	#endif
863	#ifndef PNG_USER_HEIGHT_MAX
864	# define PNG_USER_HEIGHT_MAX 1000000L
865	#endif
866
867	/* Added at libpng-1.2.43. To accept all valid PNGs no matter
868	* how large, set these two limits to 0.
869	*/
870	#ifndef PNG_USER_CHUNK_CACHE_MAX
871	# define PNG_USER_CHUNK_CACHE_MAX 0
872	#endif
873
874	/* Added at libpng-1.2.43 */
875	#ifndef PNG_USER_CHUNK_MALLOC_MAX
876	# define PNG_USER_CHUNK_MALLOC_MAX 0
877	#endif
878
879	#ifndef PNG_LITERAL_SHARP
880	# define PNG_LITERAL_SHARP 0x23
881	#endif
882	#ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
883	# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
884	#endif
885	#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
886	# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
887	#endif
888
889	/* Added at libpng-1.2.34 */
890	#ifndef PNG_STRING_NEWLINE
891	#define PNG_STRING_NEWLINE "\n"
892	#endif
893
894	/* These are currently experimental features, define them if you want */
895
896	/* very little testing */
897	/*
898	#ifdef PNG_READ_SUPPORTED
899	# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
900	# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
901	# endif
902	#endif
903	*/
904
905	/* This is only for PowerPC big-endian and 680x0 systems */
906	/* some testing */
907	/*
908	#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
909	# define PNG_READ_BIG_ENDIAN_SUPPORTED
910	#endif
911	*/
912
913	/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
914	/*
915	#define PNG_NO_POINTER_INDEXING
916	*/
917
918	#if !defined(PNG_NO_POINTER_INDEXING) && \
919	!defined(PNG_POINTER_INDEXING_SUPPORTED)
920	# define PNG_POINTER_INDEXING_SUPPORTED
921	#endif
922
923	/* These functions are turned off by default, as they will be phased out. */
924	/*
925	#define PNG_USELESS_TESTS_SUPPORTED
926	#define PNG_CORRECT_PALETTE_SUPPORTED
927	*/
928
929	/* Any chunks you are not interested in, you can undef here. The
930	* ones that allocate memory may be expecially important (hIST,
931	* tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
932	* a bit smaller.
933	*/
934
935	#if defined(PNG_READ_SUPPORTED) && \
936	!defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
937	!defined(PNG_NO_READ_ANCILLARY_CHUNKS)
938	# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
939	#endif
940
941	#if defined(PNG_WRITE_SUPPORTED) && \
942	!defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
943	!defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
944	# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
945	#endif
946
947	#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
948
949	#ifdef PNG_NO_READ_TEXT
950	# define PNG_NO_READ_iTXt
951	# define PNG_NO_READ_tEXt
952	# define PNG_NO_READ_zTXt
953	#endif
954	#ifndef PNG_NO_READ_bKGD
955	# define PNG_READ_bKGD_SUPPORTED
956	# define PNG_bKGD_SUPPORTED
957	#endif
958	#ifndef PNG_NO_READ_cHRM
959	# define PNG_READ_cHRM_SUPPORTED
960	# define PNG_cHRM_SUPPORTED
961	#endif
962	#ifndef PNG_NO_READ_gAMA
963	# define PNG_READ_gAMA_SUPPORTED
964	# define PNG_gAMA_SUPPORTED
965	#endif
966	#ifndef PNG_NO_READ_hIST
967	# define PNG_READ_hIST_SUPPORTED
968	# define PNG_hIST_SUPPORTED
969	#endif
970	#ifndef PNG_NO_READ_iCCP
971	# define PNG_READ_iCCP_SUPPORTED
972	# define PNG_iCCP_SUPPORTED
973	#endif
974	#ifndef PNG_NO_READ_iTXt
975	# ifndef PNG_READ_iTXt_SUPPORTED
976	# define PNG_READ_iTXt_SUPPORTED
977	# endif
978	# ifndef PNG_iTXt_SUPPORTED
979	# define PNG_iTXt_SUPPORTED
980	# endif
981	#endif
982	#ifndef PNG_NO_READ_oFFs
983	# define PNG_READ_oFFs_SUPPORTED
984	# define PNG_oFFs_SUPPORTED
985	#endif
986	#ifndef PNG_NO_READ_pCAL
987	# define PNG_READ_pCAL_SUPPORTED
988	# define PNG_pCAL_SUPPORTED
989	#endif
990	#ifndef PNG_NO_READ_sCAL
991	# define PNG_READ_sCAL_SUPPORTED
992	# define PNG_sCAL_SUPPORTED
993	#endif
994	#ifndef PNG_NO_READ_pHYs
995	# define PNG_READ_pHYs_SUPPORTED
996	# define PNG_pHYs_SUPPORTED
997	#endif
998	#ifndef PNG_NO_READ_sBIT
999	# define PNG_READ_sBIT_SUPPORTED
1000	# define PNG_sBIT_SUPPORTED
1001	#endif
1002	#ifndef PNG_NO_READ_sPLT
1003	# define PNG_READ_sPLT_SUPPORTED
1004	# define PNG_sPLT_SUPPORTED
1005	#endif
1006	#ifndef PNG_NO_READ_sRGB
1007	# define PNG_READ_sRGB_SUPPORTED
1008	# define PNG_sRGB_SUPPORTED
1009	#endif
1010	#ifndef PNG_NO_READ_tEXt
1011	# define PNG_READ_tEXt_SUPPORTED
1012	# define PNG_tEXt_SUPPORTED
1013	#endif
1014	#ifndef PNG_NO_READ_tIME
1015	# define PNG_READ_tIME_SUPPORTED
1016	# define PNG_tIME_SUPPORTED
1017	#endif
1018	#ifndef PNG_NO_READ_tRNS
1019	# define PNG_READ_tRNS_SUPPORTED
1020	# define PNG_tRNS_SUPPORTED
1021	#endif
1022	#ifndef PNG_NO_READ_zTXt
1023	# define PNG_READ_zTXt_SUPPORTED
1024	# define PNG_zTXt_SUPPORTED
1025	#endif
1026	#ifndef PNG_NO_READ_OPT_PLTE
1027	# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
1028	#endif /* optional PLTE chunk in RGB and RGBA images */
1029	#if defined(PNG_READ_iTXt_SUPPORTED) \|\| defined(PNG_READ_tEXt_SUPPORTED) \|\| \
1030	defined(PNG_READ_zTXt_SUPPORTED)
1031	# define PNG_READ_TEXT_SUPPORTED
1032	# define PNG_TEXT_SUPPORTED
1033	#endif
1034
1035	#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
1036
1037	#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
1038	# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
1039	# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1040	# define PNG_UNKNOWN_CHUNKS_SUPPORTED
1041	# endif
1042	#endif
1043	#if !defined(PNG_NO_READ_USER_CHUNKS) && \
1044	defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
1045	# define PNG_READ_USER_CHUNKS_SUPPORTED
1046	# define PNG_USER_CHUNKS_SUPPORTED
1047	# ifdef PNG_NO_READ_UNKNOWN_CHUNKS
1048	# undef PNG_NO_READ_UNKNOWN_CHUNKS
1049	# endif
1050	# ifdef PNG_NO_HANDLE_AS_UNKNOWN
1051	# undef PNG_NO_HANDLE_AS_UNKNOWN
1052	# endif
1053	#endif
1054
1055	#ifndef PNG_NO_HANDLE_AS_UNKNOWN
1056	# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1057	# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1058	# endif
1059	#endif
1060
1061	#ifdef PNG_WRITE_SUPPORTED
1062	#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
1063
1064	#ifdef PNG_NO_WRITE_TEXT
1065	# define PNG_NO_WRITE_iTXt
1066	# define PNG_NO_WRITE_tEXt
1067	# define PNG_NO_WRITE_zTXt
1068	#endif
1069	#ifndef PNG_NO_WRITE_bKGD
1070	# define PNG_WRITE_bKGD_SUPPORTED
1071	# ifndef PNG_bKGD_SUPPORTED
1072	# define PNG_bKGD_SUPPORTED
1073	# endif
1074	#endif
1075	#ifndef PNG_NO_WRITE_cHRM
1076	# define PNG_WRITE_cHRM_SUPPORTED
1077	# ifndef PNG_cHRM_SUPPORTED
1078	# define PNG_cHRM_SUPPORTED
1079	# endif
1080	#endif
1081	#ifndef PNG_NO_WRITE_gAMA
1082	# define PNG_WRITE_gAMA_SUPPORTED
1083	# ifndef PNG_gAMA_SUPPORTED
1084	# define PNG_gAMA_SUPPORTED
1085	# endif
1086	#endif
1087	#ifndef PNG_NO_WRITE_hIST
1088	# define PNG_WRITE_hIST_SUPPORTED
1089	# ifndef PNG_hIST_SUPPORTED
1090	# define PNG_hIST_SUPPORTED
1091	# endif
1092	#endif
1093	#ifndef PNG_NO_WRITE_iCCP
1094	# define PNG_WRITE_iCCP_SUPPORTED
1095	# ifndef PNG_iCCP_SUPPORTED
1096	# define PNG_iCCP_SUPPORTED
1097	# endif
1098	#endif
1099	#ifndef PNG_NO_WRITE_iTXt
1100	# ifndef PNG_WRITE_iTXt_SUPPORTED
1101	# define PNG_WRITE_iTXt_SUPPORTED
1102	# endif
1103	# ifndef PNG_iTXt_SUPPORTED
1104	# define PNG_iTXt_SUPPORTED
1105	# endif
1106	#endif
1107	#ifndef PNG_NO_WRITE_oFFs
1108	# define PNG_WRITE_oFFs_SUPPORTED
1109	# ifndef PNG_oFFs_SUPPORTED
1110	# define PNG_oFFs_SUPPORTED
1111	# endif
1112	#endif
1113	#ifndef PNG_NO_WRITE_pCAL
1114	# define PNG_WRITE_pCAL_SUPPORTED
1115	# ifndef PNG_pCAL_SUPPORTED
1116	# define PNG_pCAL_SUPPORTED
1117	# endif
1118	#endif
1119	#ifndef PNG_NO_WRITE_sCAL
1120	# define PNG_WRITE_sCAL_SUPPORTED
1121	# ifndef PNG_sCAL_SUPPORTED
1122	# define PNG_sCAL_SUPPORTED
1123	# endif
1124	#endif
1125	#ifndef PNG_NO_WRITE_pHYs
1126	# define PNG_WRITE_pHYs_SUPPORTED
1127	# ifndef PNG_pHYs_SUPPORTED
1128	# define PNG_pHYs_SUPPORTED
1129	# endif
1130	#endif
1131	#ifndef PNG_NO_WRITE_sBIT
1132	# define PNG_WRITE_sBIT_SUPPORTED
1133	# ifndef PNG_sBIT_SUPPORTED
1134	# define PNG_sBIT_SUPPORTED
1135	# endif
1136	#endif
1137	#ifndef PNG_NO_WRITE_sPLT
1138	# define PNG_WRITE_sPLT_SUPPORTED
1139	# ifndef PNG_sPLT_SUPPORTED
1140	# define PNG_sPLT_SUPPORTED
1141	# endif
1142	#endif
1143	#ifndef PNG_NO_WRITE_sRGB
1144	# define PNG_WRITE_sRGB_SUPPORTED
1145	# ifndef PNG_sRGB_SUPPORTED
1146	# define PNG_sRGB_SUPPORTED
1147	# endif
1148	#endif
1149	#ifndef PNG_NO_WRITE_tEXt
1150	# define PNG_WRITE_tEXt_SUPPORTED
1151	# ifndef PNG_tEXt_SUPPORTED
1152	# define PNG_tEXt_SUPPORTED
1153	# endif
1154	#endif
1155	#ifndef PNG_NO_WRITE_tIME
1156	# define PNG_WRITE_tIME_SUPPORTED
1157	# ifndef PNG_tIME_SUPPORTED
1158	# define PNG_tIME_SUPPORTED
1159	# endif
1160	#endif
1161	#ifndef PNG_NO_WRITE_tRNS
1162	# define PNG_WRITE_tRNS_SUPPORTED
1163	# ifndef PNG_tRNS_SUPPORTED
1164	# define PNG_tRNS_SUPPORTED
1165	# endif
1166	#endif
1167	#ifndef PNG_NO_WRITE_zTXt
1168	# define PNG_WRITE_zTXt_SUPPORTED
1169	# ifndef PNG_zTXt_SUPPORTED
1170	# define PNG_zTXt_SUPPORTED
1171	# endif
1172	#endif
1173	#if defined(PNG_WRITE_iTXt_SUPPORTED) \|\| defined(PNG_WRITE_tEXt_SUPPORTED) \|\| \
1174	defined(PNG_WRITE_zTXt_SUPPORTED)
1175	# define PNG_WRITE_TEXT_SUPPORTED
1176	# ifndef PNG_TEXT_SUPPORTED
1177	# define PNG_TEXT_SUPPORTED
1178	# endif
1179	#endif
1180
1181	#ifdef PNG_WRITE_tIME_SUPPORTED
1182	# ifndef PNG_NO_CONVERT_tIME
1183	# ifndef _WIN32_WCE
1184	/* The "tm" structure is not supported on WindowsCE */
1185	# ifndef PNG_CONVERT_tIME_SUPPORTED
1186	# define PNG_CONVERT_tIME_SUPPORTED
1187	# endif
1188	# endif
1189	# endif
1190	#endif
1191
1192	#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1193
1194	#if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED)
1195	# define PNG_WRITE_FILTER_SUPPORTED
1196	#endif
1197
1198	#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1199	# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1200	# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1201	# define PNG_UNKNOWN_CHUNKS_SUPPORTED
1202	# endif
1203	#endif
1204
1205	#ifndef PNG_NO_HANDLE_AS_UNKNOWN
1206	# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1207	# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1208	# endif
1209	#endif
1210	#endif /* PNG_WRITE_SUPPORTED */
1211
1212	/* Turn this off to disable png_read_png() and
1213	* png_write_png() and leave the row_pointers member
1214	* out of the info structure.
1215	*/
1216	#ifndef PNG_NO_INFO_IMAGE
1217	# define PNG_INFO_IMAGE_SUPPORTED
1218	#endif
1219
1220	/* Need the time information for converting tIME chunks */
1221	#ifdef PNG_CONVERT_tIME_SUPPORTED
1222	/* "time.h" functions are not supported on WindowsCE */
1223	# include <time.h>
1224	#endif
1225
1226	/* Some typedefs to get us started. These should be safe on most of the
1227	* common platforms. The typedefs should be at least as large as the
1228	* numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1229	* don't have to be exactly that size. Some compilers dislike passing
1230	* unsigned shorts as function parameters, so you may be better off using
1231	* unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
1232	* want to have unsigned int for png_uint_32 instead of unsigned long.
1233	*/
1234
1235	typedef unsigned long png_uint_32;
1236	typedef long png_int_32;
1237	typedef unsigned short png_uint_16;
1238	typedef short png_int_16;
1239	typedef unsigned char png_byte;
1240
1241	/* This is usually size_t. It is typedef'ed just in case you need it to
1242	change (I'm not sure if you will or not, so I thought I'd be safe) */
1243	#ifdef PNG_SIZE_T
1244	typedef PNG_SIZE_T png_size_t;
1245	# define png_sizeof(x) png_convert_size(sizeof(x))
1246	#else
1247	typedef size_t png_size_t;
1248	# define png_sizeof(x) sizeof(x)
1249	#endif
1250
1251	/* The following is needed for medium model support. It cannot be in the
1252	* PNG_INTERNAL section. Needs modification for other compilers besides
1253	* MSC. Model independent support declares all arrays and pointers to be
1254	* large using the far keyword. The zlib version used must also support
1255	* model independent data. As of version zlib 1.0.4, the necessary changes
1256	* have been made in zlib. The USE_FAR_KEYWORD define triggers other
1257	* changes that are needed. (Tim Wegner)
1258	*/
1259
1260	/* Separate compiler dependencies (problem here is that zlib.h always
1261	defines FAR. (SJT) */
1262	#ifdef __BORLANDC__
1263	# if defined(__LARGE__) \|\| defined(__HUGE__) \|\| defined(__COMPACT__)
1264	# define LDATA 1
1265	# else
1266	# define LDATA 0
1267	# endif
1268	/* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1269	# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1270	# define PNG_MAX_MALLOC_64K
1271	# if (LDATA != 1)
1272	# ifndef FAR
1273	# define FAR __far
1274	# endif
1275	# define USE_FAR_KEYWORD
1276	# endif /* LDATA != 1 */
1277	/* Possibly useful for moving data out of default segment.
1278	* Uncomment it if you want. Could also define FARDATA as
1279	* const if your compiler supports it. (SJT)
1280	# define FARDATA FAR
1281	*/
1282	# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1283	#endif /* __BORLANDC__ */
1284
1285
1286	/* Suggest testing for specific compiler first before testing for
1287	* FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1288	* making reliance oncertain keywords suspect. (SJT)
1289	*/
1290
1291	/* MSC Medium model */
1292	#ifdef FAR
1293	# ifdef M_I86MM
1294	# define USE_FAR_KEYWORD
1295	# define FARDATA FAR
1296	# include <dos.h>
1297	# endif
1298	#endif
1299
1300	/* SJT: default case */
1301	#ifndef FAR
1302	# define FAR
1303	#endif
1304
1305	/* At this point FAR is always defined */
1306	#ifndef FARDATA
1307	# define FARDATA
1308	#endif
1309
1310	/* Typedef for floating-point numbers that are converted
1311	to fixed-point with a multiple of 100,000, e.g., int_gamma */
1312	typedef png_int_32 png_fixed_point;
1313
1314	/* Add typedefs for pointers */
1315	typedef void FAR * png_voidp;
1316	typedef png_byte FAR * png_bytep;
1317	typedef png_uint_32 FAR * png_uint_32p;
1318	typedef png_int_32 FAR * png_int_32p;
1319	typedef png_uint_16 FAR * png_uint_16p;
1320	typedef png_int_16 FAR * png_int_16p;
1321	typedef PNG_CONST char FAR * png_const_charp;
1322	typedef char FAR * png_charp;
1323	typedef png_fixed_point FAR * png_fixed_point_p;
1324
1325	#ifndef PNG_NO_STDIO
1326	#ifdef _WIN32_WCE
1327	typedef HANDLE png_FILE_p;
1328	#else
1329	typedef FILE * png_FILE_p;
1330	#endif
1331	#endif
1332
1333	#ifdef PNG_FLOATING_POINT_SUPPORTED
1334	typedef double FAR * png_doublep;
1335	#endif
1336
1337	/* Pointers to pointers; i.e. arrays */
1338	typedef png_byte FAR * FAR * png_bytepp;
1339	typedef png_uint_32 FAR * FAR * png_uint_32pp;
1340	typedef png_int_32 FAR * FAR * png_int_32pp;
1341	typedef png_uint_16 FAR * FAR * png_uint_16pp;
1342	typedef png_int_16 FAR * FAR * png_int_16pp;
1343	typedef PNG_CONST char FAR * FAR * png_const_charpp;
1344	typedef char FAR * FAR * png_charpp;
1345	typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1346	#ifdef PNG_FLOATING_POINT_SUPPORTED
1347	typedef double FAR * FAR * png_doublepp;
1348	#endif
1349
1350	/* Pointers to pointers to pointers; i.e., pointer to array */
1351	typedef char FAR * FAR * FAR * png_charppp;
1352
1353	#if defined(PNG_1_0_X) \|\| defined(PNG_1_2_X)
1354	/* SPC - Is this stuff deprecated? */
1355	/* It'll be removed as of libpng-1.4.0 - GR-P */
1356	/* libpng typedefs for types in zlib. If zlib changes
1357	* or another compression library is used, then change these.
1358	* Eliminates need to change all the source files.
1359	*/
1360	typedef charf * png_zcharp;
1361	typedef charf * FAR * png_zcharpp;
1362	typedef z_stream FAR * png_zstreamp;
1363	#endif /* (PNG_1_0_X) \|\| defined(PNG_1_2_X) */
1364
1365	/*
1366	* Define PNG_BUILD_DLL if the module being built is a Windows
1367	* LIBPNG DLL.
1368	*
1369	* Define PNG_USE_DLL if you want to link to the Windows LIBPNG DLL.
1370	* It is equivalent to Microsoft predefined macro _DLL that is
1371	* automatically defined when you compile using the share
1372	* version of the CRT (C Run-Time library)
1373	*
1374	* The cygwin mods make this behavior a little different:
1375	* Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1376	* Define PNG_STATIC if you are building a static library for use with cygwin,
1377	* -or- if you are building an application that you want to link to the
1378	* static library.
1379	* PNG_USE_DLL is defined by default (no user action needed) unless one of
1380	* the other flags is defined.
1381	*/
1382
1383	#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) \|\| defined(PNG_USE_DLL))
1384	# define PNG_DLL
1385	#endif
1386	/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1387	* When building a static lib, default to no GLOBAL ARRAYS, but allow
1388	* command-line override
1389	*/
1390	#ifdef __CYGWIN__
1391	# ifndef PNG_STATIC
1392	# ifdef PNG_USE_GLOBAL_ARRAYS
1393	# undef PNG_USE_GLOBAL_ARRAYS
1394	# endif
1395	# ifndef PNG_USE_LOCAL_ARRAYS
1396	# define PNG_USE_LOCAL_ARRAYS
1397	# endif
1398	# else
1399	# if defined(PNG_USE_LOCAL_ARRAYS) \|\| defined(PNG_NO_GLOBAL_ARRAYS)
1400	# ifdef PNG_USE_GLOBAL_ARRAYS
1401	# undef PNG_USE_GLOBAL_ARRAYS
1402	# endif
1403	# endif
1404	# endif
1405	# if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1406	# define PNG_USE_LOCAL_ARRAYS
1407	# endif
1408	#endif
1409
1410	/* Do not use global arrays (helps with building DLL's)
1411	* They are no longer used in libpng itself, since version 1.0.5c,
1412	* but might be required for some pre-1.0.5c applications.
1413	*/
1414	#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1415	# if defined(PNG_NO_GLOBAL_ARRAYS) \|\| \
1416	(defined(__GNUC__) && defined(PNG_DLL)) \|\| defined(_MSC_VER)
1417	# define PNG_USE_LOCAL_ARRAYS
1418	# else
1419	# define PNG_USE_GLOBAL_ARRAYS
1420	# endif
1421	#endif
1422
1423	#ifdef __CYGWIN__
1424	# undef PNGAPI
1425	# define PNGAPI __cdecl
1426	# undef PNG_IMPEXP
1427	# define PNG_IMPEXP
1428	#endif
1429
1430	/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1431	* you may get warnings regarding the linkage of png_zalloc and png_zfree.
1432	* Don't ignore those warnings; you must also reset the default calling
1433	* convention in your compiler to match your PNGAPI, and you must build
1434	* zlib and your applications the same way you build libpng.
1435	*/
1436
1437	#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1438	# ifndef PNG_NO_MODULEDEF
1439	# define PNG_NO_MODULEDEF
1440	# endif
1441	#endif
1442
1443	#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1444	# define PNG_IMPEXP
1445	#endif
1446
1447	#if defined(PNG_DLL) \|\| defined(_DLL) \|\| defined(__DLL__ ) \|\| \
1448	(( defined(_Windows) \|\| defined(_WINDOWS) \|\| \
1449	defined(WIN32) \|\| defined(_WIN32) \|\| defined(__WIN32__) ))
1450
1451	# ifndef PNGAPI
1452	# if defined(__GNUC__) \|\| (defined (_MSC_VER) && (_MSC_VER >= 800))
1453	# define PNGAPI __cdecl
1454	# else
1455	# define PNGAPI _cdecl
1456	# endif
1457	# endif
1458
1459	# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) \|\| \
1460	0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1461	# define PNG_IMPEXP
1462	# endif
1463
1464	# ifndef PNG_IMPEXP
1465
1466	# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1467	# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1468
1469	/* Borland/Microsoft */
1470	# if defined(_MSC_VER) \|\| defined(__BORLANDC__)
1471	# if (_MSC_VER >= 800) \|\| (__BORLANDC__ >= 0x500)
1472	# define PNG_EXPORT PNG_EXPORT_TYPE1
1473	# else
1474	# define PNG_EXPORT PNG_EXPORT_TYPE2
1475	# ifdef PNG_BUILD_DLL
1476	# define PNG_IMPEXP __export
1477	# else
1478	# define PNG_IMPEXP /__import / /* doesn't exist AFAIK in
1479	VC++ */
1480	# endif /* Exists in Borland C++ for
1481	C++ classes (== huge) */
1482	# endif
1483	# endif
1484
1485	# ifndef PNG_IMPEXP
1486	# ifdef PNG_BUILD_DLL
1487	# define PNG_IMPEXP __declspec(dllexport)
1488	# else
1489	# define PNG_IMPEXP __declspec(dllimport)
1490	# endif
1491	# endif
1492	# endif /* PNG_IMPEXP */
1493	#else /* !(DLL \|\| non-cygwin WINDOWS) */
1494	# if (defined(__IBMC__) \|\| defined(__IBMCPP__)) && defined(__OS2__)
1495	# ifndef PNGAPI
1496	# define PNGAPI _System
1497	# endif
1498	# else
1499	# if 0 /* ... other platforms, with other meanings */
1500	# endif
1501	# endif
1502	#endif
1503
1504	#ifndef PNGAPI
1505	# define PNGAPI
1506	#endif
1507	#ifndef PNG_IMPEXP
1508	# define PNG_IMPEXP
1509	#endif
1510
1511	#ifdef PNG_BUILDSYMS
1512	# ifndef PNG_EXPORT
1513	# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1514	# endif
1515	# ifdef PNG_USE_GLOBAL_ARRAYS
1516	# ifndef PNG_EXPORT_VAR
1517	# define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1518	# endif
1519	# endif
1520	#endif
1521
1522	#ifndef PNG_EXPORT
1523	# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1524	#endif
1525
1526	#ifdef PNG_USE_GLOBAL_ARRAYS
1527	# ifndef PNG_EXPORT_VAR
1528	# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1529	# endif
1530	#endif
1531
1532	#ifdef PNG_PEDANTIC_WARNINGS
1533	# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
1534	# define PNG_PEDANTIC_WARNINGS_SUPPORTED
1535	# endif
1536	#endif
1537
1538	#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
1539	/* Support for compiler specific function attributes. These are used
1540	* so that where compiler support is available incorrect use of API
1541	* functions in png.h will generate compiler warnings. Added at libpng
1542	* version 1.2.41.
1543	*/
1544	# ifdef __GNUC__
1545	# ifndef PNG_USE_RESULT
1546	# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
1547	# endif
1548	# ifndef PNG_NORETURN
1549	# define PNG_NORETURN __attribute__((__noreturn__))
1550	# endif
1551	# ifndef PNG_ALLOCATED
1552	# define PNG_ALLOCATED __attribute__((__malloc__))
1553	# endif
1554
1555	/* This specifically protects structure members that should only be
1556	* accessed from within the library, therefore should be empty during
1557	* a library build.
1558	*/
1559	# ifndef PNG_DEPRECATED
1560	# define PNG_DEPRECATED __attribute__((__deprecated__))
1561	# endif
1562	# ifndef PNG_DEPSTRUCT
1563	# define PNG_DEPSTRUCT __attribute__((__deprecated__))
1564	# endif
1565	# ifndef PNG_PRIVATE
1566	# if 0 /* Doesn't work so we use deprecated instead*/
1567	# define PNG_PRIVATE \
1568	__attribute__((warning("This function is not exported by libpng.")))
1569	# else
1570	# define PNG_PRIVATE \
1571	__attribute__((__deprecated__))
1572	# endif
1573	# endif /* PNG_PRIVATE */
1574	# endif /* __GNUC__ */
1575	#endif /* PNG_PEDANTIC_WARNINGS */
1576
1577	#ifndef PNG_DEPRECATED
1578	# define PNG_DEPRECATED /* Use of this function is deprecated */
1579	#endif
1580	#ifndef PNG_USE_RESULT
1581	# define PNG_USE_RESULT /* The result of this function must be checked */
1582	#endif
1583	#ifndef PNG_NORETURN
1584	# define PNG_NORETURN /* This function does not return */
1585	#endif
1586	#ifndef PNG_ALLOCATED
1587	# define PNG_ALLOCATED /* The result of the function is new memory */
1588	#endif
1589	#ifndef PNG_DEPSTRUCT
1590	# define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
1591	#endif
1592	#ifndef PNG_PRIVATE
1593	# define PNG_PRIVATE /* This is a private libpng function */
1594	#endif
1595
1596	/* User may want to use these so they are not in PNG_INTERNAL. Any library
1597	* functions that are passed far data must be model independent.
1598	*/
1599
1600	#ifndef PNG_ABORT
1601	# define PNG_ABORT() abort()
1602	#endif
1603
1604	#ifdef PNG_SETJMP_SUPPORTED
1605	# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1606	#else
1607	# define png_jmpbuf(png_ptr) \
1608	(LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1609	#endif
1610
1611	#ifdef USE_FAR_KEYWORD /* memory model independent fns */
1612	/* Use this to make far-to-near assignments */
1613	# define CHECK 1
1614	# define NOCHECK 0
1615	# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1616	# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1617	# define png_snprintf _fsnprintf /* Added to v 1.2.19 */
1618	# define png_strlen _fstrlen
1619	# define png_memcmp _fmemcmp /* SJT: added */
1620	# define png_memcpy _fmemcpy
1621	# define png_memset _fmemset
1622	#else /* Use the usual functions */
1623	# define CVT_PTR(ptr) (ptr)
1624	# define CVT_PTR_NOCHECK(ptr) (ptr)
1625	# ifndef PNG_NO_SNPRINTF
1626	# ifdef _MSC_VER
1627	# define png_snprintf _snprintf /* Added to v 1.2.19 */
1628	# define png_snprintf2 _snprintf
1629	# define png_snprintf6 _snprintf
1630	# else
1631	# define png_snprintf snprintf /* Added to v 1.2.19 */
1632	# define png_snprintf2 snprintf
1633	# define png_snprintf6 snprintf
1634	# endif
1635	# else
1636	/* You don't have or don't want to use snprintf(). Caution: Using
1637	* sprintf instead of snprintf exposes your application to accidental
1638	* or malevolent buffer overflows. If you don't have snprintf()
1639	* as a general rule you should provide one (you can get one from
1640	* Portable OpenSSH).
1641	*/
1642	# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1643	# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1644	# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1645	sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1646	# endif
1647	# define png_strlen strlen
1648	# define png_memcmp memcmp /* SJT: added */
1649	# define png_memcpy memcpy
1650	# define png_memset memset
1651	#endif
1652	/* End of memory model independent support */
1653
1654	/* Just a little check that someone hasn't tried to define something
1655	* contradictory.
1656	*/
1657	#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1658	# undef PNG_ZBUF_SIZE
1659	# define PNG_ZBUF_SIZE 65536L
1660	#endif
1661
1662	/* Added at libpng-1.2.8 */
1663	#endif /* PNG_VERSION_INFO_ONLY */
1664
1665	#endif /* PNGCONF_H */

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