/[pcsx2_0.9.7]/trunk/3rdparty/wxWidgets/src/png/pngconf.h
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Tue Sep 7 03:24:11 2010 UTC (10 years, 4 months ago) by william
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committing r3113 initial commit again...
1 william 31
2     /* pngconf.h - machine configurable file for libpng
3     *
4     * libpng version 1.2.39 - August 13, 2009
5     * Copyright (c) 1998-2009 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 by default in 1.2.0. You can disable this if you don't need to
119     support PNGs that are embedded in MNG datastreams */
120     #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
121     # ifndef PNG_MNG_FEATURES_SUPPORTED
122     # define PNG_MNG_FEATURES_SUPPORTED
123     # endif
124     #endif
125    
126     #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
127     # ifndef PNG_FLOATING_POINT_SUPPORTED
128     # define PNG_FLOATING_POINT_SUPPORTED
129     # endif
130     #endif
131    
132     /* If you are running on a machine where you cannot allocate more
133     * than 64K of memory at once, uncomment this. While libpng will not
134     * normally need that much memory in a chunk (unless you load up a very
135     * large file), zlib needs to know how big of a chunk it can use, and
136     * libpng thus makes sure to check any memory allocation to verify it
137     * will fit into memory.
138     #define PNG_MAX_MALLOC_64K
139     */
140     #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
141     # define PNG_MAX_MALLOC_64K
142     #endif
143    
144     /* Special munging to support doing things the 'cygwin' way:
145     * 'Normal' png-on-win32 defines/defaults:
146     * PNG_BUILD_DLL -- building dll
147     * PNG_USE_DLL -- building an application, linking to dll
148     * (no define) -- building static library, or building an
149     * application and linking to the static lib
150     * 'Cygwin' defines/defaults:
151     * PNG_BUILD_DLL -- (ignored) building the dll
152     * (no define) -- (ignored) building an application, linking to the dll
153     * PNG_STATIC -- (ignored) building the static lib, or building an
154     * application that links to the static lib.
155     * ALL_STATIC -- (ignored) building various static libs, or building an
156     * application that links to the static libs.
157     * Thus,
158     * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
159     * this bit of #ifdefs will define the 'correct' config variables based on
160     * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
161     * unnecessary.
162     *
163     * Also, the precedence order is:
164     * ALL_STATIC (since we can't #undef something outside our namespace)
165     * PNG_BUILD_DLL
166     * PNG_STATIC
167     * (nothing) == PNG_USE_DLL
168     *
169     * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
170     * of auto-import in binutils, we no longer need to worry about
171     * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
172     * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
173     * to __declspec() stuff. However, we DO need to worry about
174     * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
175     * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
176     */
177     #if defined(__CYGWIN__)
178     # if defined(ALL_STATIC)
179     # if defined(PNG_BUILD_DLL)
180     # undef PNG_BUILD_DLL
181     # endif
182     # if defined(PNG_USE_DLL)
183     # undef PNG_USE_DLL
184     # endif
185     # if defined(PNG_DLL)
186     # undef PNG_DLL
187     # endif
188     # if !defined(PNG_STATIC)
189     # define PNG_STATIC
190     # endif
191     # else
192     # if defined (PNG_BUILD_DLL)
193     # if defined(PNG_STATIC)
194     # undef PNG_STATIC
195     # endif
196     # if defined(PNG_USE_DLL)
197     # undef PNG_USE_DLL
198     # endif
199     # if !defined(PNG_DLL)
200     # define PNG_DLL
201     # endif
202     # else
203     # if defined(PNG_STATIC)
204     # if defined(PNG_USE_DLL)
205     # undef PNG_USE_DLL
206     # endif
207     # if defined(PNG_DLL)
208     # undef PNG_DLL
209     # endif
210     # else
211     # if !defined(PNG_USE_DLL)
212     # define PNG_USE_DLL
213     # endif
214     # if !defined(PNG_DLL)
215     # define PNG_DLL
216     # endif
217     # endif
218     # endif
219     # endif
220     #endif
221    
222     /* This protects us against compilers that run on a windowing system
223     * and thus don't have or would rather us not use the stdio types:
224     * stdin, stdout, and stderr. The only one currently used is stderr
225     * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
226     * prevent these from being compiled and used. #defining PNG_NO_STDIO
227     * will also prevent these, plus will prevent the entire set of stdio
228     * macros and functions (FILE *, printf, etc.) from being compiled and used,
229     * unless (PNG_DEBUG > 0) has been #defined.
230     *
231     * #define PNG_NO_CONSOLE_IO
232     * #define PNG_NO_STDIO
233     */
234    
235     #if defined(_WIN32_WCE)
236     # include <windows.h>
237     /* Console I/O functions are not supported on WindowsCE */
238     # define PNG_NO_CONSOLE_IO
239     /* abort() may not be supported on some/all Windows CE platforms */
240     # define PNG_ABORT() exit(-1)
241     # ifdef PNG_DEBUG
242     # undef PNG_DEBUG
243     # endif
244     #endif
245    
246     #ifdef PNG_BUILD_DLL
247     # ifndef PNG_CONSOLE_IO_SUPPORTED
248     # ifndef PNG_NO_CONSOLE_IO
249     # define PNG_NO_CONSOLE_IO
250     # endif
251     # endif
252     #endif
253    
254     # ifdef PNG_NO_STDIO
255     # ifndef PNG_NO_CONSOLE_IO
256     # define PNG_NO_CONSOLE_IO
257     # endif
258     # ifdef PNG_DEBUG
259     # if (PNG_DEBUG > 0)
260     # include <stdio.h>
261     # endif
262     # endif
263     # else
264     # if !defined(_WIN32_WCE)
265     /* "stdio.h" functions are not supported on WindowsCE */
266     # include <stdio.h>
267     # endif
268     # endif
269    
270     /* This macro protects us against machines that don't have function
271     * prototypes (ie K&R style headers). If your compiler does not handle
272     * function prototypes, define this macro and use the included ansi2knr.
273     * I've always been able to use _NO_PROTO as the indicator, but you may
274     * need to drag the empty declaration out in front of here, or change the
275     * ifdef to suit your own needs.
276     */
277     #ifndef PNGARG
278    
279     #ifdef OF /* zlib prototype munger */
280     # define PNGARG(arglist) OF(arglist)
281     #else
282    
283     #ifdef _NO_PROTO
284     # define PNGARG(arglist) ()
285     # ifndef PNG_TYPECAST_NULL
286     # define PNG_TYPECAST_NULL
287     # endif
288     #else
289     # define PNGARG(arglist) arglist
290     #endif /* _NO_PROTO */
291    
292    
293     #endif /* OF */
294    
295     #endif /* PNGARG */
296    
297     /* Try to determine if we are compiling on a Mac. Note that testing for
298     * just __MWERKS__ is not good enough, because the Codewarrior is now used
299     * on non-Mac platforms.
300     */
301     #ifndef MACOS
302     # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
303     defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
304     # define MACOS
305     # endif
306     #endif
307    
308     /* enough people need this for various reasons to include it here */
309     #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
310     # include <sys/types.h>
311     #endif
312    
313     #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
314     # define PNG_SETJMP_SUPPORTED
315     #endif
316    
317     #ifdef PNG_SETJMP_SUPPORTED
318     /* This is an attempt to force a single setjmp behaviour on Linux. If
319     * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
320     *
321     * You can bypass this test if you know that your application uses exactly
322     * the same setjmp.h that was included when libpng was built. Only define
323     * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
324     * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
325     * while building a separate libpng library for general use.
326     */
327    
328     # ifndef PNG_SKIP_SETJMP_CHECK
329     # ifdef __linux__
330     # ifdef _BSD_SOURCE
331     # define PNG_SAVE_BSD_SOURCE
332     # undef _BSD_SOURCE
333     # endif
334     # ifdef _SETJMP_H
335     /* If you encounter a compiler error here, see the explanation
336     * near the end of INSTALL.
337     */
338     __pngconf.h__ in libpng already includes setjmp.h;
339     __dont__ include it again.;
340     # endif
341     # endif /* __linux__ */
342     # endif /* PNG_SKIP_SETJMP_CHECK */
343    
344     /* include setjmp.h for error handling */
345     # include <setjmp.h>
346    
347     # ifdef __linux__
348     # ifdef PNG_SAVE_BSD_SOURCE
349     # ifndef _BSD_SOURCE
350     # define _BSD_SOURCE
351     # endif
352     # undef PNG_SAVE_BSD_SOURCE
353     # endif
354     # endif /* __linux__ */
355     #endif /* PNG_SETJMP_SUPPORTED */
356    
357     #ifdef BSD
358     # include <strings.h>
359     #else
360     # include <string.h>
361     #endif
362    
363     /* Other defines for things like memory and the like can go here. */
364     #ifdef PNG_INTERNAL
365    
366     #include <stdlib.h>
367    
368     /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
369     * aren't usually used outside the library (as far as I know), so it is
370     * debatable if they should be exported at all. In the future, when it is
371     * possible to have run-time registry of chunk-handling functions, some of
372     * these will be made available again.
373     #define PNG_EXTERN extern
374     */
375     #define PNG_EXTERN
376    
377     /* Other defines specific to compilers can go here. Try to keep
378     * them inside an appropriate ifdef/endif pair for portability.
379     */
380    
381     #if defined(PNG_FLOATING_POINT_SUPPORTED)
382     # if defined(MACOS)
383     /* We need to check that <math.h> hasn't already been included earlier
384     * as it seems it doesn't agree with <fp.h>, yet we should really use
385     * <fp.h> if possible.
386     */
387     # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
388     # include <fp.h>
389     # endif
390     # else
391     # include <math.h>
392     # endif
393     # if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
394     /* Amiga SAS/C: We must include builtin FPU functions when compiling using
395     * MATH=68881
396     */
397     # include <m68881.h>
398     # endif
399     #endif
400    
401     /* Codewarrior on NT has linking problems without this. */
402     #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
403     # define PNG_ALWAYS_EXTERN
404     #endif
405    
406     /* This provides the non-ANSI (far) memory allocation routines. */
407     #if defined(__TURBOC__) && defined(__MSDOS__)
408     # include <mem.h>
409     # include <alloc.h>
410     #endif
411    
412     /* I have no idea why is this necessary... */
413     #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
414     defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
415     # include <malloc.h>
416     #endif
417    
418     /* This controls how fine the dithering gets. As this allocates
419     * a largish chunk of memory (32K), those who are not as concerned
420     * with dithering quality can decrease some or all of these.
421     */
422     #ifndef PNG_DITHER_RED_BITS
423     # define PNG_DITHER_RED_BITS 5
424     #endif
425     #ifndef PNG_DITHER_GREEN_BITS
426     # define PNG_DITHER_GREEN_BITS 5
427     #endif
428     #ifndef PNG_DITHER_BLUE_BITS
429     # define PNG_DITHER_BLUE_BITS 5
430     #endif
431    
432     /* This controls how fine the gamma correction becomes when you
433     * are only interested in 8 bits anyway. Increasing this value
434     * results in more memory being used, and more pow() functions
435     * being called to fill in the gamma tables. Don't set this value
436     * less then 8, and even that may not work (I haven't tested it).
437     */
438    
439     #ifndef PNG_MAX_GAMMA_8
440     # define PNG_MAX_GAMMA_8 11
441     #endif
442    
443     /* This controls how much a difference in gamma we can tolerate before
444     * we actually start doing gamma conversion.
445     */
446     #ifndef PNG_GAMMA_THRESHOLD
447     # define PNG_GAMMA_THRESHOLD 0.05
448     #endif
449    
450     #endif /* PNG_INTERNAL */
451    
452     /* The following uses const char * instead of char * for error
453     * and warning message functions, so some compilers won't complain.
454     * If you do not want to use const, define PNG_NO_CONST here.
455     */
456    
457     #ifndef PNG_NO_CONST
458     # define PNG_CONST const
459     #else
460     # define PNG_CONST
461     #endif
462    
463     /* The following defines give you the ability to remove code from the
464     * library that you will not be using. I wish I could figure out how to
465     * automate this, but I can't do that without making it seriously hard
466     * on the users. So if you are not using an ability, change the #define
467     * to and #undef, and that part of the library will not be compiled. If
468     * your linker can't find a function, you may want to make sure the
469     * ability is defined here. Some of these depend upon some others being
470     * defined. I haven't figured out all the interactions here, so you may
471     * have to experiment awhile to get everything to compile. If you are
472     * creating or using a shared library, you probably shouldn't touch this,
473     * as it will affect the size of the structures, and this will cause bad
474     * things to happen if the library and/or application ever change.
475     */
476    
477     /* Any features you will not be using can be undef'ed here */
478    
479     /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
480     * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
481     * on the compile line, then pick and choose which ones to define without
482     * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
483     * if you only want to have a png-compliant reader/writer but don't need
484     * any of the extra transformations. This saves about 80 kbytes in a
485     * typical installation of the library. (PNG_NO_* form added in version
486     * 1.0.1c, for consistency)
487     */
488    
489     /* The size of the png_text structure changed in libpng-1.0.6 when
490     * iTXt support was added. iTXt support was turned off by default through
491     * libpng-1.2.x, to support old apps that malloc the png_text structure
492     * instead of calling png_set_text() and letting libpng malloc it. It
493     * will be turned on by default in libpng-1.4.0.
494     */
495    
496     #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
497     # ifndef PNG_NO_iTXt_SUPPORTED
498     # define PNG_NO_iTXt_SUPPORTED
499     # endif
500     # ifndef PNG_NO_READ_iTXt
501     # define PNG_NO_READ_iTXt
502     # endif
503     # ifndef PNG_NO_WRITE_iTXt
504     # define PNG_NO_WRITE_iTXt
505     # endif
506     #endif
507    
508     #if !defined(PNG_NO_iTXt_SUPPORTED)
509     # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
510     # define PNG_READ_iTXt
511     # endif
512     # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
513     # define PNG_WRITE_iTXt
514     # endif
515     #endif
516    
517     /* The following support, added after version 1.0.0, can be turned off here en
518     * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
519     * with old applications that require the length of png_struct and png_info
520     * to remain unchanged.
521     */
522    
523     #ifdef PNG_LEGACY_SUPPORTED
524     # define PNG_NO_FREE_ME
525     # define PNG_NO_READ_UNKNOWN_CHUNKS
526     # define PNG_NO_WRITE_UNKNOWN_CHUNKS
527     # define PNG_NO_HANDLE_AS_UNKNOWN
528     # define PNG_NO_READ_USER_CHUNKS
529     # define PNG_NO_READ_iCCP
530     # define PNG_NO_WRITE_iCCP
531     # define PNG_NO_READ_iTXt
532     # define PNG_NO_WRITE_iTXt
533     # define PNG_NO_READ_sCAL
534     # define PNG_NO_WRITE_sCAL
535     # define PNG_NO_READ_sPLT
536     # define PNG_NO_WRITE_sPLT
537     # define PNG_NO_INFO_IMAGE
538     # define PNG_NO_READ_RGB_TO_GRAY
539     # define PNG_NO_READ_USER_TRANSFORM
540     # define PNG_NO_WRITE_USER_TRANSFORM
541     # define PNG_NO_USER_MEM
542     # define PNG_NO_READ_EMPTY_PLTE
543     # define PNG_NO_MNG_FEATURES
544     # define PNG_NO_FIXED_POINT_SUPPORTED
545     #endif
546    
547     /* Ignore attempt to turn off both floating and fixed point support */
548     #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
549     !defined(PNG_NO_FIXED_POINT_SUPPORTED)
550     # define PNG_FIXED_POINT_SUPPORTED
551     #endif
552    
553     #ifndef PNG_NO_FREE_ME
554     # define PNG_FREE_ME_SUPPORTED
555     #endif
556    
557     #ifdef PNG_READ_SUPPORTED
558    
559     #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
560     !defined(PNG_NO_READ_TRANSFORMS)
561     # define PNG_READ_TRANSFORMS_SUPPORTED
562     #endif
563    
564     #ifdef PNG_READ_TRANSFORMS_SUPPORTED
565     # ifndef PNG_NO_READ_EXPAND
566     # define PNG_READ_EXPAND_SUPPORTED
567     # endif
568     # ifndef PNG_NO_READ_SHIFT
569     # define PNG_READ_SHIFT_SUPPORTED
570     # endif
571     # ifndef PNG_NO_READ_PACK
572     # define PNG_READ_PACK_SUPPORTED
573     # endif
574     # ifndef PNG_NO_READ_BGR
575     # define PNG_READ_BGR_SUPPORTED
576     # endif
577     # ifndef PNG_NO_READ_SWAP
578     # define PNG_READ_SWAP_SUPPORTED
579     # endif
580     # ifndef PNG_NO_READ_PACKSWAP
581     # define PNG_READ_PACKSWAP_SUPPORTED
582     # endif
583     # ifndef PNG_NO_READ_INVERT
584     # define PNG_READ_INVERT_SUPPORTED
585     # endif
586     # ifndef PNG_NO_READ_DITHER
587     # define PNG_READ_DITHER_SUPPORTED
588     # endif
589     # ifndef PNG_NO_READ_BACKGROUND
590     # define PNG_READ_BACKGROUND_SUPPORTED
591     # endif
592     # ifndef PNG_NO_READ_16_TO_8
593     # define PNG_READ_16_TO_8_SUPPORTED
594     # endif
595     # ifndef PNG_NO_READ_FILLER
596     # define PNG_READ_FILLER_SUPPORTED
597     # endif
598     # ifndef PNG_NO_READ_GAMMA
599     # define PNG_READ_GAMMA_SUPPORTED
600     # endif
601     # ifndef PNG_NO_READ_GRAY_TO_RGB
602     # define PNG_READ_GRAY_TO_RGB_SUPPORTED
603     # endif
604     # ifndef PNG_NO_READ_SWAP_ALPHA
605     # define PNG_READ_SWAP_ALPHA_SUPPORTED
606     # endif
607     # ifndef PNG_NO_READ_INVERT_ALPHA
608     # define PNG_READ_INVERT_ALPHA_SUPPORTED
609     # endif
610     # ifndef PNG_NO_READ_STRIP_ALPHA
611     # define PNG_READ_STRIP_ALPHA_SUPPORTED
612     # endif
613     # ifndef PNG_NO_READ_USER_TRANSFORM
614     # define PNG_READ_USER_TRANSFORM_SUPPORTED
615     # endif
616     # ifndef PNG_NO_READ_RGB_TO_GRAY
617     # define PNG_READ_RGB_TO_GRAY_SUPPORTED
618     # endif
619     #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
620    
621     #if !defined(PNG_NO_PROGRESSIVE_READ) && \
622     !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive */
623     # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
624     #endif /* about interlacing capability! You'll */
625     /* still have interlacing unless you change the following line: */
626    
627     #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
628    
629     #ifndef PNG_NO_READ_COMPOSITE_NODIV
630     # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
631     # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
632     # endif
633     #endif
634    
635     #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
636     /* Deprecated, will be removed from version 2.0.0.
637     Use PNG_MNG_FEATURES_SUPPORTED instead. */
638     #ifndef PNG_NO_READ_EMPTY_PLTE
639     # define PNG_READ_EMPTY_PLTE_SUPPORTED
640     #endif
641     #endif
642    
643     #endif /* PNG_READ_SUPPORTED */
644    
645     #ifdef PNG_WRITE_SUPPORTED
646    
647     # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
648     !defined(PNG_NO_WRITE_TRANSFORMS)
649     # define PNG_WRITE_TRANSFORMS_SUPPORTED
650     #endif
651    
652     #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
653     # ifndef PNG_NO_WRITE_SHIFT
654     # define PNG_WRITE_SHIFT_SUPPORTED
655     # endif
656     # ifndef PNG_NO_WRITE_PACK
657     # define PNG_WRITE_PACK_SUPPORTED
658     # endif
659     # ifndef PNG_NO_WRITE_BGR
660     # define PNG_WRITE_BGR_SUPPORTED
661     # endif
662     # ifndef PNG_NO_WRITE_SWAP
663     # define PNG_WRITE_SWAP_SUPPORTED
664     # endif
665     # ifndef PNG_NO_WRITE_PACKSWAP
666     # define PNG_WRITE_PACKSWAP_SUPPORTED
667     # endif
668     # ifndef PNG_NO_WRITE_INVERT
669     # define PNG_WRITE_INVERT_SUPPORTED
670     # endif
671     # ifndef PNG_NO_WRITE_FILLER
672     # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
673     # endif
674     # ifndef PNG_NO_WRITE_SWAP_ALPHA
675     # define PNG_WRITE_SWAP_ALPHA_SUPPORTED
676     # endif
677     # ifndef PNG_NO_WRITE_INVERT_ALPHA
678     # define PNG_WRITE_INVERT_ALPHA_SUPPORTED
679     # endif
680     # ifndef PNG_NO_WRITE_USER_TRANSFORM
681     # define PNG_WRITE_USER_TRANSFORM_SUPPORTED
682     # endif
683     #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
684    
685     #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
686     !defined(PNG_WRITE_INTERLACING_SUPPORTED)
687     #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
688     encoders, but can cause trouble
689     if left undefined */
690     #endif
691    
692     #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
693     !defined(PNG_WRITE_WEIGHTED_FILTER) && \
694     defined(PNG_FLOATING_POINT_SUPPORTED)
695     # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
696     #endif
697    
698     #ifndef PNG_NO_WRITE_FLUSH
699     # define PNG_WRITE_FLUSH_SUPPORTED
700     #endif
701    
702     #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
703     /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
704     #ifndef PNG_NO_WRITE_EMPTY_PLTE
705     # define PNG_WRITE_EMPTY_PLTE_SUPPORTED
706     #endif
707     #endif
708    
709     #endif /* PNG_WRITE_SUPPORTED */
710    
711     #ifndef PNG_1_0_X
712     # ifndef PNG_NO_ERROR_NUMBERS
713     # define PNG_ERROR_NUMBERS_SUPPORTED
714     # endif
715     #endif /* PNG_1_0_X */
716    
717     #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
718     defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
719     # ifndef PNG_NO_USER_TRANSFORM_PTR
720     # define PNG_USER_TRANSFORM_PTR_SUPPORTED
721     # endif
722     #endif
723    
724     #ifndef PNG_NO_STDIO
725     # define PNG_TIME_RFC1123_SUPPORTED
726     #endif
727    
728     /* This adds extra functions in pngget.c for accessing data from the
729     * info pointer (added in version 0.99)
730     * png_get_image_width()
731     * png_get_image_height()
732     * png_get_bit_depth()
733     * png_get_color_type()
734     * png_get_compression_type()
735     * png_get_filter_type()
736     * png_get_interlace_type()
737     * png_get_pixel_aspect_ratio()
738     * png_get_pixels_per_meter()
739     * png_get_x_offset_pixels()
740     * png_get_y_offset_pixels()
741     * png_get_x_offset_microns()
742     * png_get_y_offset_microns()
743     */
744     #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
745     # define PNG_EASY_ACCESS_SUPPORTED
746     #endif
747    
748     /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
749     * and removed from version 1.2.20. The following will be removed
750     * from libpng-1.4.0
751     */
752    
753     #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
754     # ifndef PNG_OPTIMIZED_CODE_SUPPORTED
755     # define PNG_OPTIMIZED_CODE_SUPPORTED
756     # endif
757     #endif
758    
759     #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
760     # ifndef PNG_ASSEMBLER_CODE_SUPPORTED
761     # define PNG_ASSEMBLER_CODE_SUPPORTED
762     # endif
763    
764     # if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
765     /* work around 64-bit gcc compiler bugs in gcc-3.x */
766     # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
767     # define PNG_NO_MMX_CODE
768     # endif
769     # endif
770    
771     # if defined(__APPLE__)
772     # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
773     # define PNG_NO_MMX_CODE
774     # endif
775     # endif
776    
777     # if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
778     # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
779     # define PNG_NO_MMX_CODE
780     # endif
781     # endif
782    
783     # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
784     # define PNG_MMX_CODE_SUPPORTED
785     # endif
786    
787     #endif
788     /* end of obsolete code to be removed from libpng-1.4.0 */
789    
790     #if !defined(PNG_1_0_X)
791     #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
792     # define PNG_USER_MEM_SUPPORTED
793     #endif
794     #endif /* PNG_1_0_X */
795    
796     /* Added at libpng-1.2.6 */
797     #if !defined(PNG_1_0_X)
798     #ifndef PNG_SET_USER_LIMITS_SUPPORTED
799     #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
800     # define PNG_SET_USER_LIMITS_SUPPORTED
801     #endif
802     #endif
803     #endif /* PNG_1_0_X */
804    
805     /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
806     * how large, set these limits to 0x7fffffffL
807     */
808     #ifndef PNG_USER_WIDTH_MAX
809     # define PNG_USER_WIDTH_MAX 1000000L
810     #endif
811     #ifndef PNG_USER_HEIGHT_MAX
812     # define PNG_USER_HEIGHT_MAX 1000000L
813     #endif
814    
815     /* Added at libpng-1.2.34 and 1.4.0 */
816     #ifndef PNG_STRING_NEWLINE
817     #define PNG_STRING_NEWLINE "\n"
818     #endif
819    
820     /* These are currently experimental features, define them if you want */
821    
822     /* very little testing */
823     /*
824     #ifdef PNG_READ_SUPPORTED
825     # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
826     # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
827     # endif
828     #endif
829     */
830    
831     /* This is only for PowerPC big-endian and 680x0 systems */
832     /* some testing */
833     /*
834     #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
835     # define PNG_READ_BIG_ENDIAN_SUPPORTED
836     #endif
837     */
838    
839     /* Buggy compilers (e.g., gcc 2.7.2.2) need this */
840     /*
841     #define PNG_NO_POINTER_INDEXING
842     */
843    
844     /* These functions are turned off by default, as they will be phased out. */
845     /*
846     #define PNG_USELESS_TESTS_SUPPORTED
847     #define PNG_CORRECT_PALETTE_SUPPORTED
848     */
849    
850     /* Any chunks you are not interested in, you can undef here. The
851     * ones that allocate memory may be expecially important (hIST,
852     * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
853     * a bit smaller.
854     */
855    
856     #if defined(PNG_READ_SUPPORTED) && \
857     !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
858     !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
859     # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
860     #endif
861    
862     #if defined(PNG_WRITE_SUPPORTED) && \
863     !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
864     !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
865     # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
866     #endif
867    
868     #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
869    
870     #ifdef PNG_NO_READ_TEXT
871     # define PNG_NO_READ_iTXt
872     # define PNG_NO_READ_tEXt
873     # define PNG_NO_READ_zTXt
874     #endif
875     #ifndef PNG_NO_READ_bKGD
876     # define PNG_READ_bKGD_SUPPORTED
877     # define PNG_bKGD_SUPPORTED
878     #endif
879     #ifndef PNG_NO_READ_cHRM
880     # define PNG_READ_cHRM_SUPPORTED
881     # define PNG_cHRM_SUPPORTED
882     #endif
883     #ifndef PNG_NO_READ_gAMA
884     # define PNG_READ_gAMA_SUPPORTED
885     # define PNG_gAMA_SUPPORTED
886     #endif
887     #ifndef PNG_NO_READ_hIST
888     # define PNG_READ_hIST_SUPPORTED
889     # define PNG_hIST_SUPPORTED
890     #endif
891     #ifndef PNG_NO_READ_iCCP
892     # define PNG_READ_iCCP_SUPPORTED
893     # define PNG_iCCP_SUPPORTED
894     #endif
895     #ifndef PNG_NO_READ_iTXt
896     # ifndef PNG_READ_iTXt_SUPPORTED
897     # define PNG_READ_iTXt_SUPPORTED
898     # endif
899     # ifndef PNG_iTXt_SUPPORTED
900     # define PNG_iTXt_SUPPORTED
901     # endif
902     #endif
903     #ifndef PNG_NO_READ_oFFs
904     # define PNG_READ_oFFs_SUPPORTED
905     # define PNG_oFFs_SUPPORTED
906     #endif
907     #ifndef PNG_NO_READ_pCAL
908     # define PNG_READ_pCAL_SUPPORTED
909     # define PNG_pCAL_SUPPORTED
910     #endif
911     #ifndef PNG_NO_READ_sCAL
912     # define PNG_READ_sCAL_SUPPORTED
913     # define PNG_sCAL_SUPPORTED
914     #endif
915     #ifndef PNG_NO_READ_pHYs
916     # define PNG_READ_pHYs_SUPPORTED
917     # define PNG_pHYs_SUPPORTED
918     #endif
919     #ifndef PNG_NO_READ_sBIT
920     # define PNG_READ_sBIT_SUPPORTED
921     # define PNG_sBIT_SUPPORTED
922     #endif
923     #ifndef PNG_NO_READ_sPLT
924     # define PNG_READ_sPLT_SUPPORTED
925     # define PNG_sPLT_SUPPORTED
926     #endif
927     #ifndef PNG_NO_READ_sRGB
928     # define PNG_READ_sRGB_SUPPORTED
929     # define PNG_sRGB_SUPPORTED
930     #endif
931     #ifndef PNG_NO_READ_tEXt
932     # define PNG_READ_tEXt_SUPPORTED
933     # define PNG_tEXt_SUPPORTED
934     #endif
935     #ifndef PNG_NO_READ_tIME
936     # define PNG_READ_tIME_SUPPORTED
937     # define PNG_tIME_SUPPORTED
938     #endif
939     #ifndef PNG_NO_READ_tRNS
940     # define PNG_READ_tRNS_SUPPORTED
941     # define PNG_tRNS_SUPPORTED
942     #endif
943     #ifndef PNG_NO_READ_zTXt
944     # define PNG_READ_zTXt_SUPPORTED
945     # define PNG_zTXt_SUPPORTED
946     #endif
947     #ifndef PNG_NO_READ_OPT_PLTE
948     # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
949     #endif /* optional PLTE chunk in RGB and RGBA images */
950     #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
951     defined(PNG_READ_zTXt_SUPPORTED)
952     # define PNG_READ_TEXT_SUPPORTED
953     # define PNG_TEXT_SUPPORTED
954     #endif
955    
956     #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
957    
958     #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
959     # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
960     # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
961     # define PNG_UNKNOWN_CHUNKS_SUPPORTED
962     # endif
963     #endif
964     #if !defined(PNG_NO_READ_USER_CHUNKS) && \
965     defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
966     # define PNG_READ_USER_CHUNKS_SUPPORTED
967     # define PNG_USER_CHUNKS_SUPPORTED
968     # ifdef PNG_NO_READ_UNKNOWN_CHUNKS
969     # undef PNG_NO_READ_UNKNOWN_CHUNKS
970     # endif
971     # ifdef PNG_NO_HANDLE_AS_UNKNOWN
972     # undef PNG_NO_HANDLE_AS_UNKNOWN
973     # endif
974     #endif
975    
976     #ifndef PNG_NO_HANDLE_AS_UNKNOWN
977     # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
978     # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
979     # endif
980     #endif
981    
982     #ifdef PNG_WRITE_SUPPORTED
983     #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
984    
985     #ifdef PNG_NO_WRITE_TEXT
986     # define PNG_NO_WRITE_iTXt
987     # define PNG_NO_WRITE_tEXt
988     # define PNG_NO_WRITE_zTXt
989     #endif
990     #ifndef PNG_NO_WRITE_bKGD
991     # define PNG_WRITE_bKGD_SUPPORTED
992     # ifndef PNG_bKGD_SUPPORTED
993     # define PNG_bKGD_SUPPORTED
994     # endif
995     #endif
996     #ifndef PNG_NO_WRITE_cHRM
997     # define PNG_WRITE_cHRM_SUPPORTED
998     # ifndef PNG_cHRM_SUPPORTED
999     # define PNG_cHRM_SUPPORTED
1000     # endif
1001     #endif
1002     #ifndef PNG_NO_WRITE_gAMA
1003     # define PNG_WRITE_gAMA_SUPPORTED
1004     # ifndef PNG_gAMA_SUPPORTED
1005     # define PNG_gAMA_SUPPORTED
1006     # endif
1007     #endif
1008     #ifndef PNG_NO_WRITE_hIST
1009     # define PNG_WRITE_hIST_SUPPORTED
1010     # ifndef PNG_hIST_SUPPORTED
1011     # define PNG_hIST_SUPPORTED
1012     # endif
1013     #endif
1014     #ifndef PNG_NO_WRITE_iCCP
1015     # define PNG_WRITE_iCCP_SUPPORTED
1016     # ifndef PNG_iCCP_SUPPORTED
1017     # define PNG_iCCP_SUPPORTED
1018     # endif
1019     #endif
1020     #ifndef PNG_NO_WRITE_iTXt
1021     # ifndef PNG_WRITE_iTXt_SUPPORTED
1022     # define PNG_WRITE_iTXt_SUPPORTED
1023     # endif
1024     # ifndef PNG_iTXt_SUPPORTED
1025     # define PNG_iTXt_SUPPORTED
1026     # endif
1027     #endif
1028     #ifndef PNG_NO_WRITE_oFFs
1029     # define PNG_WRITE_oFFs_SUPPORTED
1030     # ifndef PNG_oFFs_SUPPORTED
1031     # define PNG_oFFs_SUPPORTED
1032     # endif
1033     #endif
1034     #ifndef PNG_NO_WRITE_pCAL
1035     # define PNG_WRITE_pCAL_SUPPORTED
1036     # ifndef PNG_pCAL_SUPPORTED
1037     # define PNG_pCAL_SUPPORTED
1038     # endif
1039     #endif
1040     #ifndef PNG_NO_WRITE_sCAL
1041     # define PNG_WRITE_sCAL_SUPPORTED
1042     # ifndef PNG_sCAL_SUPPORTED
1043     # define PNG_sCAL_SUPPORTED
1044     # endif
1045     #endif
1046     #ifndef PNG_NO_WRITE_pHYs
1047     # define PNG_WRITE_pHYs_SUPPORTED
1048     # ifndef PNG_pHYs_SUPPORTED
1049     # define PNG_pHYs_SUPPORTED
1050     # endif
1051     #endif
1052     #ifndef PNG_NO_WRITE_sBIT
1053     # define PNG_WRITE_sBIT_SUPPORTED
1054     # ifndef PNG_sBIT_SUPPORTED
1055     # define PNG_sBIT_SUPPORTED
1056     # endif
1057     #endif
1058     #ifndef PNG_NO_WRITE_sPLT
1059     # define PNG_WRITE_sPLT_SUPPORTED
1060     # ifndef PNG_sPLT_SUPPORTED
1061     # define PNG_sPLT_SUPPORTED
1062     # endif
1063     #endif
1064     #ifndef PNG_NO_WRITE_sRGB
1065     # define PNG_WRITE_sRGB_SUPPORTED
1066     # ifndef PNG_sRGB_SUPPORTED
1067     # define PNG_sRGB_SUPPORTED
1068     # endif
1069     #endif
1070     #ifndef PNG_NO_WRITE_tEXt
1071     # define PNG_WRITE_tEXt_SUPPORTED
1072     # ifndef PNG_tEXt_SUPPORTED
1073     # define PNG_tEXt_SUPPORTED
1074     # endif
1075     #endif
1076     #ifndef PNG_NO_WRITE_tIME
1077     # define PNG_WRITE_tIME_SUPPORTED
1078     # ifndef PNG_tIME_SUPPORTED
1079     # define PNG_tIME_SUPPORTED
1080     # endif
1081     #endif
1082     #ifndef PNG_NO_WRITE_tRNS
1083     # define PNG_WRITE_tRNS_SUPPORTED
1084     # ifndef PNG_tRNS_SUPPORTED
1085     # define PNG_tRNS_SUPPORTED
1086     # endif
1087     #endif
1088     #ifndef PNG_NO_WRITE_zTXt
1089     # define PNG_WRITE_zTXt_SUPPORTED
1090     # ifndef PNG_zTXt_SUPPORTED
1091     # define PNG_zTXt_SUPPORTED
1092     # endif
1093     #endif
1094     #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1095     defined(PNG_WRITE_zTXt_SUPPORTED)
1096     # define PNG_WRITE_TEXT_SUPPORTED
1097     # ifndef PNG_TEXT_SUPPORTED
1098     # define PNG_TEXT_SUPPORTED
1099     # endif
1100     #endif
1101    
1102     #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1103    
1104     #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1105     # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1106     # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1107     # define PNG_UNKNOWN_CHUNKS_SUPPORTED
1108     # endif
1109     #endif
1110    
1111     #ifndef PNG_NO_HANDLE_AS_UNKNOWN
1112     # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1113     # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1114     # endif
1115     #endif
1116     #endif /* PNG_WRITE_SUPPORTED */
1117    
1118     /* Turn this off to disable png_read_png() and
1119     * png_write_png() and leave the row_pointers member
1120     * out of the info structure.
1121     */
1122     #ifndef PNG_NO_INFO_IMAGE
1123     # define PNG_INFO_IMAGE_SUPPORTED
1124     #endif
1125    
1126     /* need the time information for reading tIME chunks */
1127     #if defined(PNG_tIME_SUPPORTED)
1128     # if !defined(_WIN32_WCE)
1129     /* "time.h" functions are not supported on WindowsCE */
1130     # include <time.h>
1131     # endif
1132     #endif
1133    
1134     /* Some typedefs to get us started. These should be safe on most of the
1135     * common platforms. The typedefs should be at least as large as the
1136     * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1137     * don't have to be exactly that size. Some compilers dislike passing
1138     * unsigned shorts as function parameters, so you may be better off using
1139     * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
1140     * want to have unsigned int for png_uint_32 instead of unsigned long.
1141     */
1142    
1143     typedef unsigned long png_uint_32;
1144     typedef long png_int_32;
1145     typedef unsigned short png_uint_16;
1146     typedef short png_int_16;
1147     typedef unsigned char png_byte;
1148    
1149     /* This is usually size_t. It is typedef'ed just in case you need it to
1150     change (I'm not sure if you will or not, so I thought I'd be safe) */
1151     #ifdef PNG_SIZE_T
1152     typedef PNG_SIZE_T png_size_t;
1153     # define png_sizeof(x) png_convert_size(sizeof(x))
1154     #else
1155     typedef size_t png_size_t;
1156     # define png_sizeof(x) sizeof(x)
1157     #endif
1158    
1159     /* The following is needed for medium model support. It cannot be in the
1160     * PNG_INTERNAL section. Needs modification for other compilers besides
1161     * MSC. Model independent support declares all arrays and pointers to be
1162     * large using the far keyword. The zlib version used must also support
1163     * model independent data. As of version zlib 1.0.4, the necessary changes
1164     * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1165     * changes that are needed. (Tim Wegner)
1166     */
1167    
1168     /* Separate compiler dependencies (problem here is that zlib.h always
1169     defines FAR. (SJT) */
1170     #ifdef __BORLANDC__
1171     # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1172     # define LDATA 1
1173     # else
1174     # define LDATA 0
1175     # endif
1176     /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1177     # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1178     # define PNG_MAX_MALLOC_64K
1179     # if (LDATA != 1)
1180     # ifndef FAR
1181     # define FAR __far
1182     # endif
1183     # define USE_FAR_KEYWORD
1184     # endif /* LDATA != 1 */
1185     /* Possibly useful for moving data out of default segment.
1186     * Uncomment it if you want. Could also define FARDATA as
1187     * const if your compiler supports it. (SJT)
1188     # define FARDATA FAR
1189     */
1190     # endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1191     #endif /* __BORLANDC__ */
1192    
1193    
1194     /* Suggest testing for specific compiler first before testing for
1195     * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1196     * making reliance oncertain keywords suspect. (SJT)
1197     */
1198    
1199     /* MSC Medium model */
1200     #if defined(FAR)
1201     # if defined(M_I86MM)
1202     # define USE_FAR_KEYWORD
1203     # define FARDATA FAR
1204     # include <dos.h>
1205     # endif
1206     #endif
1207    
1208     /* SJT: default case */
1209     #ifndef FAR
1210     # define FAR
1211     #endif
1212    
1213     /* At this point FAR is always defined */
1214     #ifndef FARDATA
1215     # define FARDATA
1216     #endif
1217    
1218     /* Typedef for floating-point numbers that are converted
1219     to fixed-point with a multiple of 100,000, e.g., int_gamma */
1220     typedef png_int_32 png_fixed_point;
1221    
1222     /* Add typedefs for pointers */
1223     typedef void FAR * png_voidp;
1224     typedef png_byte FAR * png_bytep;
1225     typedef png_uint_32 FAR * png_uint_32p;
1226     typedef png_int_32 FAR * png_int_32p;
1227     typedef png_uint_16 FAR * png_uint_16p;
1228     typedef png_int_16 FAR * png_int_16p;
1229     typedef PNG_CONST char FAR * png_const_charp;
1230     typedef char FAR * png_charp;
1231     typedef png_fixed_point FAR * png_fixed_point_p;
1232    
1233     #ifndef PNG_NO_STDIO
1234     #if defined(_WIN32_WCE)
1235     typedef HANDLE png_FILE_p;
1236     #else
1237     typedef FILE * png_FILE_p;
1238     #endif
1239     #endif
1240    
1241     #ifdef PNG_FLOATING_POINT_SUPPORTED
1242     typedef double FAR * png_doublep;
1243     #endif
1244    
1245     /* Pointers to pointers; i.e. arrays */
1246     typedef png_byte FAR * FAR * png_bytepp;
1247     typedef png_uint_32 FAR * FAR * png_uint_32pp;
1248     typedef png_int_32 FAR * FAR * png_int_32pp;
1249     typedef png_uint_16 FAR * FAR * png_uint_16pp;
1250     typedef png_int_16 FAR * FAR * png_int_16pp;
1251     typedef PNG_CONST char FAR * FAR * png_const_charpp;
1252     typedef char FAR * FAR * png_charpp;
1253     typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1254     #ifdef PNG_FLOATING_POINT_SUPPORTED
1255     typedef double FAR * FAR * png_doublepp;
1256     #endif
1257    
1258     /* Pointers to pointers to pointers; i.e., pointer to array */
1259     typedef char FAR * FAR * FAR * png_charppp;
1260    
1261     #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1262     /* SPC - Is this stuff deprecated? */
1263     /* It'll be removed as of libpng-1.4.0 - GR-P */
1264     /* libpng typedefs for types in zlib. If zlib changes
1265     * or another compression library is used, then change these.
1266     * Eliminates need to change all the source files.
1267     */
1268     typedef charf * png_zcharp;
1269     typedef charf * FAR * png_zcharpp;
1270     typedef z_stream FAR * png_zstreamp;
1271     #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1272    
1273     /*
1274     * Define PNG_BUILD_DLL if the module being built is a Windows
1275     * LIBPNG DLL.
1276     *
1277     * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1278     * It is equivalent to Microsoft predefined macro _DLL that is
1279     * automatically defined when you compile using the share
1280     * version of the CRT (C Run-Time library)
1281     *
1282     * The cygwin mods make this behavior a little different:
1283     * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1284     * Define PNG_STATIC if you are building a static library for use with cygwin,
1285     * -or- if you are building an application that you want to link to the
1286     * static library.
1287     * PNG_USE_DLL is defined by default (no user action needed) unless one of
1288     * the other flags is defined.
1289     */
1290    
1291     #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1292     # define PNG_DLL
1293     #endif
1294     /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1295     * When building a static lib, default to no GLOBAL ARRAYS, but allow
1296     * command-line override
1297     */
1298     #if defined(__CYGWIN__)
1299     # if !defined(PNG_STATIC)
1300     # if defined(PNG_USE_GLOBAL_ARRAYS)
1301     # undef PNG_USE_GLOBAL_ARRAYS
1302     # endif
1303     # if !defined(PNG_USE_LOCAL_ARRAYS)
1304     # define PNG_USE_LOCAL_ARRAYS
1305     # endif
1306     # else
1307     # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
1308     # if defined(PNG_USE_GLOBAL_ARRAYS)
1309     # undef PNG_USE_GLOBAL_ARRAYS
1310     # endif
1311     # endif
1312     # endif
1313     # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1314     # define PNG_USE_LOCAL_ARRAYS
1315     # endif
1316     #endif
1317    
1318     /* Do not use global arrays (helps with building DLL's)
1319     * They are no longer used in libpng itself, since version 1.0.5c,
1320     * but might be required for some pre-1.0.5c applications.
1321     */
1322     #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1323     # if defined(PNG_NO_GLOBAL_ARRAYS) || \
1324     (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
1325     # define PNG_USE_LOCAL_ARRAYS
1326     # else
1327     # define PNG_USE_GLOBAL_ARRAYS
1328     # endif
1329     #endif
1330    
1331     #if defined(__CYGWIN__)
1332     # undef PNGAPI
1333     # define PNGAPI __cdecl
1334     # undef PNG_IMPEXP
1335     # define PNG_IMPEXP
1336     #endif
1337    
1338     /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1339     * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1340     * Don't ignore those warnings; you must also reset the default calling
1341     * convention in your compiler to match your PNGAPI, and you must build
1342     * zlib and your applications the same way you build libpng.
1343     */
1344    
1345     #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1346     # ifndef PNG_NO_MODULEDEF
1347     # define PNG_NO_MODULEDEF
1348     # endif
1349     #endif
1350    
1351     #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1352     # define PNG_IMPEXP
1353     #endif
1354    
1355     #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1356     (( defined(_Windows) || defined(_WINDOWS) || \
1357     defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1358    
1359     # ifndef PNGAPI
1360     # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1361     # define PNGAPI __cdecl
1362     # else
1363     # define PNGAPI _cdecl
1364     # endif
1365     # endif
1366    
1367     # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1368     0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1369     # define PNG_IMPEXP
1370     # endif
1371    
1372     # if !defined(PNG_IMPEXP)
1373    
1374     # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1375     # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1376    
1377     /* Borland/Microsoft */
1378     # if defined(_MSC_VER) || defined(__BORLANDC__)
1379     # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1380     # define PNG_EXPORT PNG_EXPORT_TYPE1
1381     # else
1382     # define PNG_EXPORT PNG_EXPORT_TYPE2
1383     # if defined(PNG_BUILD_DLL)
1384     # define PNG_IMPEXP __export
1385     # else
1386     # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
1387     VC++ */
1388     # endif /* Exists in Borland C++ for
1389     C++ classes (== huge) */
1390     # endif
1391     # endif
1392    
1393     # if !defined(PNG_IMPEXP)
1394     # if defined(PNG_BUILD_DLL)
1395     # define PNG_IMPEXP __declspec(dllexport)
1396     # else
1397     # define PNG_IMPEXP __declspec(dllimport)
1398     # endif
1399     # endif
1400     # endif /* PNG_IMPEXP */
1401     #else /* !(DLL || non-cygwin WINDOWS) */
1402     # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1403     # ifndef PNGAPI
1404     # define PNGAPI _System
1405     # endif
1406     # else
1407     # if 0 /* ... other platforms, with other meanings */
1408     # endif
1409     # endif
1410     #endif
1411    
1412     #ifndef PNGAPI
1413     # define PNGAPI
1414     #endif
1415     #ifndef PNG_IMPEXP
1416     # define PNG_IMPEXP
1417     #endif
1418    
1419     #ifdef PNG_BUILDSYMS
1420     # ifndef PNG_EXPORT
1421     # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1422     # endif
1423     # ifdef PNG_USE_GLOBAL_ARRAYS
1424     # ifndef PNG_EXPORT_VAR
1425     # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1426     # endif
1427     # endif
1428     #endif
1429    
1430     #ifndef PNG_EXPORT
1431     # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1432     #endif
1433    
1434     #ifdef PNG_USE_GLOBAL_ARRAYS
1435     # ifndef PNG_EXPORT_VAR
1436     # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1437     # endif
1438     #endif
1439    
1440     /* User may want to use these so they are not in PNG_INTERNAL. Any library
1441     * functions that are passed far data must be model independent.
1442     */
1443    
1444     #ifndef PNG_ABORT
1445     # define PNG_ABORT() abort()
1446     #endif
1447    
1448     #ifdef PNG_SETJMP_SUPPORTED
1449     # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1450     #else
1451     # define png_jmpbuf(png_ptr) \
1452     (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1453     #endif
1454    
1455     #if defined(USE_FAR_KEYWORD) /* memory model independent fns */
1456     /* use this to make far-to-near assignments */
1457     # define CHECK 1
1458     # define NOCHECK 0
1459     # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1460     # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1461     # define png_snprintf _fsnprintf /* Added to v 1.2.19 */
1462     # define png_strlen _fstrlen
1463     # define png_memcmp _fmemcmp /* SJT: added */
1464     # define png_memcpy _fmemcpy
1465     # define png_memset _fmemset
1466     #else /* use the usual functions */
1467     # define CVT_PTR(ptr) (ptr)
1468     # define CVT_PTR_NOCHECK(ptr) (ptr)
1469     # ifndef PNG_NO_SNPRINTF
1470     # ifdef _MSC_VER
1471     # define png_snprintf _snprintf /* Added to v 1.2.19 */
1472     # define png_snprintf2 _snprintf
1473     # define png_snprintf6 _snprintf
1474     # else
1475     # define png_snprintf snprintf /* Added to v 1.2.19 */
1476     # define png_snprintf2 snprintf
1477     # define png_snprintf6 snprintf
1478     # endif
1479     # else
1480     /* You don't have or don't want to use snprintf(). Caution: Using
1481     * sprintf instead of snprintf exposes your application to accidental
1482     * or malevolent buffer overflows. If you don't have snprintf()
1483     * as a general rule you should provide one (you can get one from
1484     * Portable OpenSSH). */
1485     # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1486     # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1487     # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1488     sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1489     # endif
1490     # define png_strlen strlen
1491     # define png_memcmp memcmp /* SJT: added */
1492     # define png_memcpy memcpy
1493     # define png_memset memset
1494     #endif
1495     /* End of memory model independent support */
1496    
1497     /* Just a little check that someone hasn't tried to define something
1498     * contradictory.
1499     */
1500     #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1501     # undef PNG_ZBUF_SIZE
1502     # define PNG_ZBUF_SIZE 65536L
1503     #endif
1504    
1505     /* Added at libpng-1.2.8 */
1506     #endif /* PNG_VERSION_INFO_ONLY */
1507    
1508     #endif /* PNGCONF_H */

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