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0272a10d
VZ		 1
2/* pngconf.h - machine configurable file for libpng
3 *
4 * libpng version 1.2.20 - September 8, 2007
5 * For conditions of distribution and use, see copyright notice in png.h
6 * Copyright (c) 1998-2007 Glenn Randers-Pehrson
7 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
8 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
9 */
10
11/* Any machine specific code is near the front of this file, so if you
12 * are configuring libpng for a machine, you may want to read the section
13 * starting here down to where it starts to typedef png_color, png_text,
14 * and png_info.
15 */
16
17#ifndef PNGCONF_H
18#define PNGCONF_H
19
20#define PNG_1_2_X
21
e0e742c3
CE		 22#ifdef __DMC__
23#define PNG_NO_SNPRINTF
24#endif
25
0272a10d
VZ		 26/*
27 * PNG_USER_CONFIG has to be defined on the compiler command line. This
28 * includes the resource compiler for Windows DLL configurations.
29 */
30#ifdef PNG_USER_CONFIG
31# ifndef PNG_USER_PRIVATEBUILD
32# define PNG_USER_PRIVATEBUILD
33# endif
34#include "pngusr.h"
35#endif
36
37/* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
38#ifdef PNG_CONFIGURE_LIBPNG
39#ifdef HAVE_CONFIG_H
40#include "config.h"
41#endif
42#endif
43
44/*
45 * Added at libpng-1.2.8
46 *
47 * If you create a private DLL you need to define in "pngusr.h" the followings:
48 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
49 * the DLL was built>
50 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
51 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
52 * distinguish your DLL from those of the official release. These
53 * correspond to the trailing letters that come after the version
54 * number and must match your private DLL name>
55 * e.g. // private DLL "libpng13gx.dll"
56 * #define PNG_USER_DLLFNAME_POSTFIX "gx"
57 *
58 * The following macros are also at your disposal if you want to complete the
59 * DLL VERSIONINFO structure.
60 * - PNG_USER_VERSIONINFO_COMMENTS
61 * - PNG_USER_VERSIONINFO_COMPANYNAME
62 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
63 */
64
65#ifdef __STDC__
66#ifdef SPECIALBUILD
67# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
68 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
69#endif
70
71#ifdef PRIVATEBUILD
72# pragma message("PRIVATEBUILD is deprecated.\
73 Use PNG_USER_PRIVATEBUILD instead.")
74# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
75#endif
76#endif /* __STDC__ */
77
78#ifndef PNG_VERSION_INFO_ONLY
79
80/* End of material added to libpng-1.2.8 */
81
82/* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble
83# define PNG_WARN_UNINITIALIZED_ROW 1
84*/
85/* End of material added at libpng-1.2.19 */
86
87/* This is the size of the compression buffer, and thus the size of
88 * an IDAT chunk. Make this whatever size you feel is best for your
89 * machine. One of these will be allocated per png_struct. When this
90 * is full, it writes the data to the disk, and does some other
91 * calculations. Making this an extremely small size will slow
92 * the library down, but you may want to experiment to determine
93 * where it becomes significant, if you are concerned with memory
94 * usage. Note that zlib allocates at least 32Kb also. For readers,
95 * this describes the size of the buffer available to read the data in.
96 * Unless this gets smaller than the size of a row (compressed),
97 * it should not make much difference how big this is.
98 */
99
100#ifndef PNG_ZBUF_SIZE
101# define PNG_ZBUF_SIZE 8192
102#endif
103
104/* Enable if you want a write-only libpng */
105
106#ifndef PNG_NO_READ_SUPPORTED
107# define PNG_READ_SUPPORTED
108#endif
109
110/* Enable if you want a read-only libpng */
111
112#ifndef PNG_NO_WRITE_SUPPORTED
113# define PNG_WRITE_SUPPORTED
114#endif
115
116/* Enabled by default in 1.2.0. You can disable this if you don't need to
117 support PNGs that are embedded in MNG datastreams */
118#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
119# ifndef PNG_MNG_FEATURES_SUPPORTED
120# define PNG_MNG_FEATURES_SUPPORTED
121# endif
122#endif
123
124#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
125# ifndef PNG_FLOATING_POINT_SUPPORTED
126# define PNG_FLOATING_POINT_SUPPORTED
127# endif
128#endif
129
130/* If you are running on a machine where you cannot allocate more
131 * than 64K of memory at once, uncomment this. While libpng will not
132 * normally need that much memory in a chunk (unless you load up a very
133 * large file), zlib needs to know how big of a chunk it can use, and
134 * libpng thus makes sure to check any memory allocation to verify it
135 * will fit into memory.
136#define PNG_MAX_MALLOC_64K
137 */
138#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
139# define PNG_MAX_MALLOC_64K
140#endif
141
142/* Special munging to support doing things the 'cygwin' way:
143 * 'Normal' png-on-win32 defines/defaults:
144 * PNG_BUILD_DLL -- building dll
145 * PNG_USE_DLL -- building an application, linking to dll
146 * (no define) -- building static library, or building an
147 * application and linking to the static lib
148 * 'Cygwin' defines/defaults:
149 * PNG_BUILD_DLL -- (ignored) building the dll
150 * (no define) -- (ignored) building an application, linking to the dll
151 * PNG_STATIC -- (ignored) building the static lib, or building an
152 * application that links to the static lib.
153 * ALL_STATIC -- (ignored) building various static libs, or building an
154 * application that links to the static libs.
155 * Thus,
156 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
157 * this bit of #ifdefs will define the 'correct' config variables based on
158 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
159 * unnecessary.
160 *
161 * Also, the precedence order is:
162 * ALL_STATIC (since we can't #undef something outside our namespace)
163 * PNG_BUILD_DLL
164 * PNG_STATIC
165 * (nothing) == PNG_USE_DLL
166 *
167 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
168 * of auto-import in binutils, we no longer need to worry about
169 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
170 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
171 * to __declspec() stuff. However, we DO need to worry about
172 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
173 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
174 */
175#if defined(__CYGWIN__)
176# if defined(ALL_STATIC)
177# if defined(PNG_BUILD_DLL)
178# undef PNG_BUILD_DLL
179# endif
180# if defined(PNG_USE_DLL)
181# undef PNG_USE_DLL
182# endif
183# if defined(PNG_DLL)
184# undef PNG_DLL
185# endif
186# if !defined(PNG_STATIC)
187# define PNG_STATIC
188# endif
189# else
190# if defined (PNG_BUILD_DLL)
191# if defined(PNG_STATIC)
192# undef PNG_STATIC
193# endif
194# if defined(PNG_USE_DLL)
195# undef PNG_USE_DLL
196# endif
197# if !defined(PNG_DLL)
198# define PNG_DLL
199# endif
200# else
201# if defined(PNG_STATIC)
202# if defined(PNG_USE_DLL)
203# undef PNG_USE_DLL
204# endif
205# if defined(PNG_DLL)
206# undef PNG_DLL
207# endif
208# else
209# if !defined(PNG_USE_DLL)
210# define PNG_USE_DLL
211# endif
212# if !defined(PNG_DLL)
213# define PNG_DLL
214# endif
215# endif
216# endif
217# endif
218#endif
219
220/* This protects us against compilers that run on a windowing system
221 * and thus don't have or would rather us not use the stdio types:
222 * stdin, stdout, and stderr. The only one currently used is stderr
223 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
224 * prevent these from being compiled and used. #defining PNG_NO_STDIO
225 * will also prevent these, plus will prevent the entire set of stdio
226 * macros and functions (FILE *, printf, etc.) from being compiled and used,
227 * unless (PNG_DEBUG > 0) has been #defined.
228 *
229 * #define PNG_NO_CONSOLE_IO
230 * #define PNG_NO_STDIO
231 */
232
233#if defined(_WIN32_WCE)
234# include <windows.h>
235 /* Console I/O functions are not supported on WindowsCE */
236# define PNG_NO_CONSOLE_IO
237# ifdef PNG_DEBUG
238# undef PNG_DEBUG
239# endif
240#endif
241
242#ifdef PNG_BUILD_DLL
243# ifndef PNG_CONSOLE_IO_SUPPORTED
244# ifndef PNG_NO_CONSOLE_IO
245# define PNG_NO_CONSOLE_IO
246# endif
247# endif
248#endif
249
250# ifdef PNG_NO_STDIO
251# ifndef PNG_NO_CONSOLE_IO
252# define PNG_NO_CONSOLE_IO
253# endif
254# ifdef PNG_DEBUG
255# if (PNG_DEBUG > 0)
256# include <stdio.h>
257# endif
258# endif
259# else
260# if !defined(_WIN32_WCE)
261/* "stdio.h" functions are not supported on WindowsCE */
262# include <stdio.h>
263# endif
264# endif
265
266/* This macro protects us against machines that don't have function
267 * prototypes (ie K&R style headers). If your compiler does not handle
268 * function prototypes, define this macro and use the included ansi2knr.
269 * I've always been able to use _NO_PROTO as the indicator, but you may
270 * need to drag the empty declaration out in front of here, or change the
271 * ifdef to suit your own needs.
272 */
273#ifndef PNGARG
274
275#ifdef OF /* zlib prototype munger */
276# define PNGARG(arglist) OF(arglist)
277#else
278
279#ifdef _NO_PROTO
280# define PNGARG(arglist) ()
281# ifndef PNG_TYPECAST_NULL
282# define PNG_TYPECAST_NULL
283# endif
284#else
285# define PNGARG(arglist) arglist
286#endif /* _NO_PROTO */
287
288
289#endif /* OF */
290
291#endif /* PNGARG */
292
293/* Try to determine if we are compiling on a Mac. Note that testing for
294 * just __MWERKS__ is not good enough, because the Codewarrior is now used
295 * on non-Mac platforms.
296 */
297#ifndef MACOS
298# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
299 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
300# define MACOS
301# endif
302#endif
303
304/* enough people need this for various reasons to include it here */
305#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
306# include <sys/types.h>
307#endif
308
309#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
310# define PNG_SETJMP_SUPPORTED
311#endif
312
313#ifdef PNG_SETJMP_SUPPORTED
314/* This is an attempt to force a single setjmp behaviour on Linux. If
315 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
316 */
317
318# ifdef __linux__
319# ifdef _BSD_SOURCE
320# define PNG_SAVE_BSD_SOURCE
321# undef _BSD_SOURCE
322# endif
323# ifdef _SETJMP_H
324 /* If you encounter a compiler error here, see the explanation
325 * near the end of INSTALL.
326 */
327 __png.h__ already includes setjmp.h;
328 __dont__ include it again.;
329# endif
330# endif /* __linux__ */
331
332 /* include setjmp.h for error handling */
333# include <setjmp.h>
334
335# ifdef __linux__
336# ifdef PNG_SAVE_BSD_SOURCE
337# define _BSD_SOURCE
338# undef PNG_SAVE_BSD_SOURCE
339# endif
340# endif /* __linux__ */
341#endif /* PNG_SETJMP_SUPPORTED */
342
343#ifdef BSD
344# include <strings.h>
345#else
346# include <string.h>
347#endif
348
349/* Other defines for things like memory and the like can go here. */
350#ifdef PNG_INTERNAL
351
352#include <stdlib.h>
353
354/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
355 * aren't usually used outside the library (as far as I know), so it is
356 * debatable if they should be exported at all. In the future, when it is
357 * possible to have run-time registry of chunk-handling functions, some of
358 * these will be made available again.
359#define PNG_EXTERN extern
360 */
361#define PNG_EXTERN
362
363/* Other defines specific to compilers can go here. Try to keep
364 * them inside an appropriate ifdef/endif pair for portability.
365 */
366
367#if defined(PNG_FLOATING_POINT_SUPPORTED)
368# if defined(MACOS)
369 /* We need to check that <math.h> hasn't already been included earlier
370 * as it seems it doesn't agree with <fp.h>, yet we should really use
371 * <fp.h> if possible.
372 */
373# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
374# include <fp.h>
375# endif
376# else
377# include <math.h>
378# endif
379# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
380 /* Amiga SAS/C: We must include builtin FPU functions when compiling using
381 * MATH=68881
382 */
383# include <m68881.h>
384# endif
385#endif
386
387/* Codewarrior on NT has linking problems without this. */
388#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
389# define PNG_ALWAYS_EXTERN
390#endif
391
392/* This provides the non-ANSI (far) memory allocation routines. */
393#if defined(__TURBOC__) && defined(__MSDOS__)
394# include <mem.h>
395# include <alloc.h>
396#endif
397
398/* I have no idea why is this necessary... */
399#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
400 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
401# include <malloc.h>
402#endif
403
404/* This controls how fine the dithering gets. As this allocates
405 * a largish chunk of memory (32K), those who are not as concerned
406 * with dithering quality can decrease some or all of these.
407 */
408#ifndef PNG_DITHER_RED_BITS
409# define PNG_DITHER_RED_BITS 5
410#endif
411#ifndef PNG_DITHER_GREEN_BITS
412# define PNG_DITHER_GREEN_BITS 5
413#endif
414#ifndef PNG_DITHER_BLUE_BITS
415# define PNG_DITHER_BLUE_BITS 5
416#endif
417
418/* This controls how fine the gamma correction becomes when you
419 * are only interested in 8 bits anyway. Increasing this value
420 * results in more memory being used, and more pow() functions
421 * being called to fill in the gamma tables. Don't set this value
422 * less then 8, and even that may not work (I haven't tested it).
423 */
424
425#ifndef PNG_MAX_GAMMA_8
426# define PNG_MAX_GAMMA_8 11
427#endif
428
429/* This controls how much a difference in gamma we can tolerate before
430 * we actually start doing gamma conversion.
431 */
432#ifndef PNG_GAMMA_THRESHOLD
433# define PNG_GAMMA_THRESHOLD 0.05
434#endif
435
436#endif /* PNG_INTERNAL */
437
438/* The following uses const char * instead of char * for error
439 * and warning message functions, so some compilers won't complain.
440 * If you do not want to use const, define PNG_NO_CONST here.
441 */
442
443#ifndef PNG_NO_CONST
444# define PNG_CONST const
445#else
446# define PNG_CONST
447#endif
448
449/* The following defines give you the ability to remove code from the
450 * library that you will not be using. I wish I could figure out how to
451 * automate this, but I can't do that without making it seriously hard
452 * on the users. So if you are not using an ability, change the #define
453 * to and #undef, and that part of the library will not be compiled. If
454 * your linker can't find a function, you may want to make sure the
455 * ability is defined here. Some of these depend upon some others being
456 * defined. I haven't figured out all the interactions here, so you may
457 * have to experiment awhile to get everything to compile. If you are
458 * creating or using a shared library, you probably shouldn't touch this,
459 * as it will affect the size of the structures, and this will cause bad
460 * things to happen if the library and/or application ever change.
461 */
462
463/* Any features you will not be using can be undef'ed here */
464
465/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
466 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
467 * on the compile line, then pick and choose which ones to define without
468 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
469 * if you only want to have a png-compliant reader/writer but don't need
470 * any of the extra transformations. This saves about 80 kbytes in a
471 * typical installation of the library. (PNG_NO_* form added in version
472 * 1.0.1c, for consistency)
473 */
474
475/* The size of the png_text structure changed in libpng-1.0.6 when
476 * iTXt support was added. iTXt support was turned off by default through
477 * libpng-1.2.x, to support old apps that malloc the png_text structure
478 * instead of calling png_set_text() and letting libpng malloc it. It
479 * was turned on by default in libpng-1.3.0.
480 */
481
482#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
483# ifndef PNG_NO_iTXt_SUPPORTED
484# define PNG_NO_iTXt_SUPPORTED
485# endif
486# ifndef PNG_NO_READ_iTXt
487# define PNG_NO_READ_iTXt
488# endif
489# ifndef PNG_NO_WRITE_iTXt
490# define PNG_NO_WRITE_iTXt
491# endif
492#endif
493
494#if !defined(PNG_NO_iTXt_SUPPORTED)
495# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
496# define PNG_READ_iTXt
497# endif
498# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
499# define PNG_WRITE_iTXt
500# endif
501#endif
502
503/* The following support, added after version 1.0.0, can be turned off here en
504 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
505 * with old applications that require the length of png_struct and png_info
506 * to remain unchanged.
507 */
508
509#ifdef PNG_LEGACY_SUPPORTED
510# define PNG_NO_FREE_ME
511# define PNG_NO_READ_UNKNOWN_CHUNKS
512# define PNG_NO_WRITE_UNKNOWN_CHUNKS
513# define PNG_NO_READ_USER_CHUNKS
514# define PNG_NO_READ_iCCP
515# define PNG_NO_WRITE_iCCP
516# define PNG_NO_READ_iTXt
517# define PNG_NO_WRITE_iTXt
518# define PNG_NO_READ_sCAL
519# define PNG_NO_WRITE_sCAL
520# define PNG_NO_READ_sPLT
521# define PNG_NO_WRITE_sPLT
522# define PNG_NO_INFO_IMAGE
523# define PNG_NO_READ_RGB_TO_GRAY
524# define PNG_NO_READ_USER_TRANSFORM
525# define PNG_NO_WRITE_USER_TRANSFORM
526# define PNG_NO_USER_MEM
527# define PNG_NO_READ_EMPTY_PLTE
528# define PNG_NO_MNG_FEATURES
529# define PNG_NO_FIXED_POINT_SUPPORTED
530#endif
531
532/* Ignore attempt to turn off both floating and fixed point support */
533#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
534 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
535# define PNG_FIXED_POINT_SUPPORTED
536#endif
537
538#ifndef PNG_NO_FREE_ME
539# define PNG_FREE_ME_SUPPORTED
540#endif
541
542#if defined(PNG_READ_SUPPORTED)
543
544#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
545 !defined(PNG_NO_READ_TRANSFORMS)
546# define PNG_READ_TRANSFORMS_SUPPORTED
547#endif
548
549#ifdef PNG_READ_TRANSFORMS_SUPPORTED
550# ifndef PNG_NO_READ_EXPAND
551# define PNG_READ_EXPAND_SUPPORTED
552# endif
553# ifndef PNG_NO_READ_SHIFT
554# define PNG_READ_SHIFT_SUPPORTED
555# endif
556# ifndef PNG_NO_READ_PACK
557# define PNG_READ_PACK_SUPPORTED
558# endif
559# ifndef PNG_NO_READ_BGR
560# define PNG_READ_BGR_SUPPORTED
561# endif
562# ifndef PNG_NO_READ_SWAP
563# define PNG_READ_SWAP_SUPPORTED
564# endif
565# ifndef PNG_NO_READ_PACKSWAP
566# define PNG_READ_PACKSWAP_SUPPORTED
567# endif
568# ifndef PNG_NO_READ_INVERT
569# define PNG_READ_INVERT_SUPPORTED
570# endif
571# ifndef PNG_NO_READ_DITHER
572# define PNG_READ_DITHER_SUPPORTED
573# endif
574# ifndef PNG_NO_READ_BACKGROUND
575# define PNG_READ_BACKGROUND_SUPPORTED
576# endif
577# ifndef PNG_NO_READ_16_TO_8
578# define PNG_READ_16_TO_8_SUPPORTED
579# endif
580# ifndef PNG_NO_READ_FILLER
581# define PNG_READ_FILLER_SUPPORTED
582# endif
583# ifndef PNG_NO_READ_GAMMA
584# define PNG_READ_GAMMA_SUPPORTED
585# endif
586# ifndef PNG_NO_READ_GRAY_TO_RGB
587# define PNG_READ_GRAY_TO_RGB_SUPPORTED
588# endif
589# ifndef PNG_NO_READ_SWAP_ALPHA
590# define PNG_READ_SWAP_ALPHA_SUPPORTED
591# endif
592# ifndef PNG_NO_READ_INVERT_ALPHA
593# define PNG_READ_INVERT_ALPHA_SUPPORTED
594# endif
595# ifndef PNG_NO_READ_STRIP_ALPHA
596# define PNG_READ_STRIP_ALPHA_SUPPORTED
597# endif
598# ifndef PNG_NO_READ_USER_TRANSFORM
599# define PNG_READ_USER_TRANSFORM_SUPPORTED
600# endif
601# ifndef PNG_NO_READ_RGB_TO_GRAY
602# define PNG_READ_RGB_TO_GRAY_SUPPORTED
603# endif
604#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
605
606#if !defined(PNG_NO_PROGRESSIVE_READ) && \
607 !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive */
608# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
609#endif /* about interlacing capability! You'll */
610 /* still have interlacing unless you change the following line: */
611
612#define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
613
614#ifndef PNG_NO_READ_COMPOSITE_NODIV
615# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
616# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
617# endif
618#endif
619
620#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
621/* Deprecated, will be removed from version 2.0.0.
622 Use PNG_MNG_FEATURES_SUPPORTED instead. */
623#ifndef PNG_NO_READ_EMPTY_PLTE
624# define PNG_READ_EMPTY_PLTE_SUPPORTED
625#endif
626#endif
627
628#endif /* PNG_READ_SUPPORTED */
629
630#if defined(PNG_WRITE_SUPPORTED)
631
632# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
633 !defined(PNG_NO_WRITE_TRANSFORMS)
634# define PNG_WRITE_TRANSFORMS_SUPPORTED
635#endif
636
637#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
638# ifndef PNG_NO_WRITE_SHIFT
639# define PNG_WRITE_SHIFT_SUPPORTED
640# endif
641# ifndef PNG_NO_WRITE_PACK
642# define PNG_WRITE_PACK_SUPPORTED
643# endif
644# ifndef PNG_NO_WRITE_BGR
645# define PNG_WRITE_BGR_SUPPORTED
646# endif
647# ifndef PNG_NO_WRITE_SWAP
648# define PNG_WRITE_SWAP_SUPPORTED
649# endif
650# ifndef PNG_NO_WRITE_PACKSWAP
651# define PNG_WRITE_PACKSWAP_SUPPORTED
652# endif
653# ifndef PNG_NO_WRITE_INVERT
654# define PNG_WRITE_INVERT_SUPPORTED
655# endif
656# ifndef PNG_NO_WRITE_FILLER
657# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
658# endif
659# ifndef PNG_NO_WRITE_SWAP_ALPHA
660# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
661# endif
662# ifndef PNG_NO_WRITE_INVERT_ALPHA
663# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
664# endif
665# ifndef PNG_NO_WRITE_USER_TRANSFORM
666# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
667# endif
668#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
669
670#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
671 !defined(PNG_WRITE_INTERLACING_SUPPORTED)
672#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
673 encoders, but can cause trouble
674 if left undefined */
675#endif
676
677#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
678 !defined(PNG_WRITE_WEIGHTED_FILTER) && \
679 defined(PNG_FLOATING_POINT_SUPPORTED)
680# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
681#endif
682
683#ifndef PNG_NO_WRITE_FLUSH
684# define PNG_WRITE_FLUSH_SUPPORTED
685#endif
686
687#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
688/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
689#ifndef PNG_NO_WRITE_EMPTY_PLTE
690# define PNG_WRITE_EMPTY_PLTE_SUPPORTED
691#endif
692#endif
693
694#endif /* PNG_WRITE_SUPPORTED */
695
696#ifndef PNG_1_0_X
697# ifndef PNG_NO_ERROR_NUMBERS
698# define PNG_ERROR_NUMBERS_SUPPORTED
699# endif
700#endif /* PNG_1_0_X */
701
702#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
703 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
704# ifndef PNG_NO_USER_TRANSFORM_PTR
705# define PNG_USER_TRANSFORM_PTR_SUPPORTED
706# endif
707#endif
708
709#ifndef PNG_NO_STDIO
710# define PNG_TIME_RFC1123_SUPPORTED
711#endif
712
713/* This adds extra functions in pngget.c for accessing data from the
714 * info pointer (added in version 0.99)
715 * png_get_image_width()
716 * png_get_image_height()
717 * png_get_bit_depth()
718 * png_get_color_type()
719 * png_get_compression_type()
720 * png_get_filter_type()
721 * png_get_interlace_type()
722 * png_get_pixel_aspect_ratio()
723 * png_get_pixels_per_meter()
724 * png_get_x_offset_pixels()
725 * png_get_y_offset_pixels()
726 * png_get_x_offset_microns()
727 * png_get_y_offset_microns()
728 */
729#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
730# define PNG_EASY_ACCESS_SUPPORTED
731#endif
732
733/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
734 * and removed from version 1.2.20. The following will be removed
735 * from libpng-1.4.0
736*/
737
738#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
739# ifndef PNG_OPTIMIZED_CODE_SUPPORTED
740# define PNG_OPTIMIZED_CODE_SUPPORTED
741# endif
742#endif
743
744#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
745# ifndef PNG_ASSEMBLER_CODE_SUPPORTED
746# define PNG_ASSEMBLER_CODE_SUPPORTED
747# endif
748
749# if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
750 /* work around 64-bit gcc compiler bugs in gcc-3.x */
751# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
752# define PNG_NO_MMX_CODE
753# endif
754# endif
755
756# if defined(__APPLE__)
757# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
758# define PNG_NO_MMX_CODE
759# endif
760# endif
761
762# if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
763# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
764# define PNG_NO_MMX_CODE
765# endif
766# endif
767
768# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
769# define PNG_MMX_CODE_SUPPORTED
770# endif
771
772#endif
773/* end of obsolete code to be removed from libpng-1.4.0 */
774
775#if !defined(PNG_1_0_X)
776#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
777# define PNG_USER_MEM_SUPPORTED
778#endif
779#endif /* PNG_1_0_X */
780
781/* Added at libpng-1.2.6 */
782#if !defined(PNG_1_0_X)
783#ifndef PNG_SET_USER_LIMITS_SUPPORTED
784#if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
785# define PNG_SET_USER_LIMITS_SUPPORTED
786#endif
787#endif
788#endif /* PNG_1_0_X */
789
790/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
791 * how large, set these limits to 0x7fffffffL
792 */
793#ifndef PNG_USER_WIDTH_MAX
794# define PNG_USER_WIDTH_MAX 1000000L
795#endif
796#ifndef PNG_USER_HEIGHT_MAX
797# define PNG_USER_HEIGHT_MAX 1000000L
798#endif
799
800/* These are currently experimental features, define them if you want */
801
802/* very little testing */
803/*
804#ifdef PNG_READ_SUPPORTED
805# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
806# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
807# endif
808#endif
809*/
810
811/* This is only for PowerPC big-endian and 680x0 systems */
812/* some testing */
813/*
814#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
815# define PNG_READ_BIG_ENDIAN_SUPPORTED
816#endif
817*/
818
819/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
820/*
821#define PNG_NO_POINTER_INDEXING
822*/
823
824/* These functions are turned off by default, as they will be phased out. */
825/*
826#define PNG_USELESS_TESTS_SUPPORTED
827#define PNG_CORRECT_PALETTE_SUPPORTED
828*/
829
830/* Any chunks you are not interested in, you can undef here. The
831 * ones that allocate memory may be expecially important (hIST,
832 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
833 * a bit smaller.
834 */
835
836#if defined(PNG_READ_SUPPORTED) && \
837 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
838 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
839# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
840#endif
841
842#if defined(PNG_WRITE_SUPPORTED) && \
843 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
844 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
845# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
846#endif
847
848#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
849
850#ifdef PNG_NO_READ_TEXT
851# define PNG_NO_READ_iTXt
852# define PNG_NO_READ_tEXt
853# define PNG_NO_READ_zTXt
854#endif
855#ifndef PNG_NO_READ_bKGD
856# define PNG_READ_bKGD_SUPPORTED
857# define PNG_bKGD_SUPPORTED
858#endif
859#ifndef PNG_NO_READ_cHRM
860# define PNG_READ_cHRM_SUPPORTED
861# define PNG_cHRM_SUPPORTED
862#endif
863#ifndef PNG_NO_READ_gAMA
864# define PNG_READ_gAMA_SUPPORTED
865# define PNG_gAMA_SUPPORTED
866#endif
867#ifndef PNG_NO_READ_hIST
868# define PNG_READ_hIST_SUPPORTED
869# define PNG_hIST_SUPPORTED
870#endif
871#ifndef PNG_NO_READ_iCCP
872# define PNG_READ_iCCP_SUPPORTED
873# define PNG_iCCP_SUPPORTED
874#endif
875#ifndef PNG_NO_READ_iTXt
876# ifndef PNG_READ_iTXt_SUPPORTED
877# define PNG_READ_iTXt_SUPPORTED
878# endif
879# ifndef PNG_iTXt_SUPPORTED
880# define PNG_iTXt_SUPPORTED
881# endif
882#endif
883#ifndef PNG_NO_READ_oFFs
884# define PNG_READ_oFFs_SUPPORTED
885# define PNG_oFFs_SUPPORTED
886#endif
887#ifndef PNG_NO_READ_pCAL
888# define PNG_READ_pCAL_SUPPORTED
889# define PNG_pCAL_SUPPORTED
890#endif
891#ifndef PNG_NO_READ_sCAL
892# define PNG_READ_sCAL_SUPPORTED
893# define PNG_sCAL_SUPPORTED
894#endif
895#ifndef PNG_NO_READ_pHYs
896# define PNG_READ_pHYs_SUPPORTED
897# define PNG_pHYs_SUPPORTED
898#endif
899#ifndef PNG_NO_READ_sBIT
900# define PNG_READ_sBIT_SUPPORTED
901# define PNG_sBIT_SUPPORTED
902#endif
903#ifndef PNG_NO_READ_sPLT
904# define PNG_READ_sPLT_SUPPORTED
905# define PNG_sPLT_SUPPORTED
906#endif
907#ifndef PNG_NO_READ_sRGB
908# define PNG_READ_sRGB_SUPPORTED
909# define PNG_sRGB_SUPPORTED
910#endif
911#ifndef PNG_NO_READ_tEXt
912# define PNG_READ_tEXt_SUPPORTED
913# define PNG_tEXt_SUPPORTED
914#endif
915#ifndef PNG_NO_READ_tIME
916# define PNG_READ_tIME_SUPPORTED
917# define PNG_tIME_SUPPORTED
918#endif
919#ifndef PNG_NO_READ_tRNS
920# define PNG_READ_tRNS_SUPPORTED
921# define PNG_tRNS_SUPPORTED
922#endif
923#ifndef PNG_NO_READ_zTXt
924# define PNG_READ_zTXt_SUPPORTED
925# define PNG_zTXt_SUPPORTED
926#endif
927#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
928# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
929# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
930# define PNG_UNKNOWN_CHUNKS_SUPPORTED
931# endif
932# ifndef PNG_NO_HANDLE_AS_UNKNOWN
933# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
934# endif
935#endif
936#if !defined(PNG_NO_READ_USER_CHUNKS) && \
937 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
938# define PNG_READ_USER_CHUNKS_SUPPORTED
939# define PNG_USER_CHUNKS_SUPPORTED
940# ifdef PNG_NO_READ_UNKNOWN_CHUNKS
941# undef PNG_NO_READ_UNKNOWN_CHUNKS
942# endif
943# ifdef PNG_NO_HANDLE_AS_UNKNOWN
944# undef PNG_NO_HANDLE_AS_UNKNOWN
945# endif
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#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
959
960#ifdef PNG_NO_WRITE_TEXT
961# define PNG_NO_WRITE_iTXt
962# define PNG_NO_WRITE_tEXt
963# define PNG_NO_WRITE_zTXt
964#endif
965#ifndef PNG_NO_WRITE_bKGD
966# define PNG_WRITE_bKGD_SUPPORTED
967# ifndef PNG_bKGD_SUPPORTED
968# define PNG_bKGD_SUPPORTED
969# endif
970#endif
971#ifndef PNG_NO_WRITE_cHRM
972# define PNG_WRITE_cHRM_SUPPORTED
973# ifndef PNG_cHRM_SUPPORTED
974# define PNG_cHRM_SUPPORTED
975# endif
976#endif
977#ifndef PNG_NO_WRITE_gAMA
978# define PNG_WRITE_gAMA_SUPPORTED
979# ifndef PNG_gAMA_SUPPORTED
980# define PNG_gAMA_SUPPORTED
981# endif
982#endif
983#ifndef PNG_NO_WRITE_hIST
984# define PNG_WRITE_hIST_SUPPORTED
985# ifndef PNG_hIST_SUPPORTED
986# define PNG_hIST_SUPPORTED
987# endif
988#endif
989#ifndef PNG_NO_WRITE_iCCP
990# define PNG_WRITE_iCCP_SUPPORTED
991# ifndef PNG_iCCP_SUPPORTED
992# define PNG_iCCP_SUPPORTED
993# endif
994#endif
995#ifndef PNG_NO_WRITE_iTXt
996# ifndef PNG_WRITE_iTXt_SUPPORTED
997# define PNG_WRITE_iTXt_SUPPORTED
998# endif
999# ifndef PNG_iTXt_SUPPORTED
1000# define PNG_iTXt_SUPPORTED
1001# endif
1002#endif
1003#ifndef PNG_NO_WRITE_oFFs
1004# define PNG_WRITE_oFFs_SUPPORTED
1005# ifndef PNG_oFFs_SUPPORTED
1006# define PNG_oFFs_SUPPORTED
1007# endif
1008#endif
1009#ifndef PNG_NO_WRITE_pCAL
1010# define PNG_WRITE_pCAL_SUPPORTED
1011# ifndef PNG_pCAL_SUPPORTED
1012# define PNG_pCAL_SUPPORTED
1013# endif
1014#endif
1015#ifndef PNG_NO_WRITE_sCAL
1016# define PNG_WRITE_sCAL_SUPPORTED
1017# ifndef PNG_sCAL_SUPPORTED
1018# define PNG_sCAL_SUPPORTED
1019# endif
1020#endif
1021#ifndef PNG_NO_WRITE_pHYs
1022# define PNG_WRITE_pHYs_SUPPORTED
1023# ifndef PNG_pHYs_SUPPORTED
1024# define PNG_pHYs_SUPPORTED
1025# endif
1026#endif
1027#ifndef PNG_NO_WRITE_sBIT
1028# define PNG_WRITE_sBIT_SUPPORTED
1029# ifndef PNG_sBIT_SUPPORTED
1030# define PNG_sBIT_SUPPORTED
1031# endif
1032#endif
1033#ifndef PNG_NO_WRITE_sPLT
1034# define PNG_WRITE_sPLT_SUPPORTED
1035# ifndef PNG_sPLT_SUPPORTED
1036# define PNG_sPLT_SUPPORTED
1037# endif
1038#endif
1039#ifndef PNG_NO_WRITE_sRGB
1040# define PNG_WRITE_sRGB_SUPPORTED
1041# ifndef PNG_sRGB_SUPPORTED
1042# define PNG_sRGB_SUPPORTED
1043# endif
1044#endif
1045#ifndef PNG_NO_WRITE_tEXt
1046# define PNG_WRITE_tEXt_SUPPORTED
1047# ifndef PNG_tEXt_SUPPORTED
1048# define PNG_tEXt_SUPPORTED
1049# endif
1050#endif
1051#ifndef PNG_NO_WRITE_tIME
1052# define PNG_WRITE_tIME_SUPPORTED
1053# ifndef PNG_tIME_SUPPORTED
1054# define PNG_tIME_SUPPORTED
1055# endif
1056#endif
1057#ifndef PNG_NO_WRITE_tRNS
1058# define PNG_WRITE_tRNS_SUPPORTED
1059# ifndef PNG_tRNS_SUPPORTED
1060# define PNG_tRNS_SUPPORTED
1061# endif
1062#endif
1063#ifndef PNG_NO_WRITE_zTXt
1064# define PNG_WRITE_zTXt_SUPPORTED
1065# ifndef PNG_zTXt_SUPPORTED
1066# define PNG_zTXt_SUPPORTED
1067# endif
1068#endif
1069#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1070# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1071# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1072# define PNG_UNKNOWN_CHUNKS_SUPPORTED
1073# endif
1074# ifndef PNG_NO_HANDLE_AS_UNKNOWN
1075# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1076# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1077# endif
1078# endif
1079#endif
1080#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1081 defined(PNG_WRITE_zTXt_SUPPORTED)
1082# define PNG_WRITE_TEXT_SUPPORTED
1083# ifndef PNG_TEXT_SUPPORTED
1084# define PNG_TEXT_SUPPORTED
1085# endif
1086#endif
1087
1088#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1089
1090/* Turn this off to disable png_read_png() and
1091 * png_write_png() and leave the row_pointers member
1092 * out of the info structure.
1093 */
1094#ifndef PNG_NO_INFO_IMAGE
1095# define PNG_INFO_IMAGE_SUPPORTED
1096#endif
1097
1098/* need the time information for reading tIME chunks */
1099#if defined(PNG_tIME_SUPPORTED)
1100# if !defined(_WIN32_WCE)
1101 /* "time.h" functions are not supported on WindowsCE */
1102# include <time.h>
1103# endif
1104#endif
1105
1106/* Some typedefs to get us started. These should be safe on most of the
1107 * common platforms. The typedefs should be at least as large as the
1108 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1109 * don't have to be exactly that size. Some compilers dislike passing
1110 * unsigned shorts as function parameters, so you may be better off using
1111 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
1112 * want to have unsigned int for png_uint_32 instead of unsigned long.
1113 */
1114
1115typedef unsigned long png_uint_32;
1116typedef long png_int_32;
1117typedef unsigned short png_uint_16;
1118typedef short png_int_16;
1119typedef unsigned char png_byte;
1120
1121/* This is usually size_t. It is typedef'ed just in case you need it to
1122 change (I'm not sure if you will or not, so I thought I'd be safe) */
1123#ifdef PNG_SIZE_T
1124 typedef PNG_SIZE_T png_size_t;
1125# define png_sizeof(x) png_convert_size(sizeof (x))
1126#else
1127 typedef size_t png_size_t;
1128# define png_sizeof(x) sizeof (x)
1129#endif
1130
1131/* The following is needed for medium model support. It cannot be in the
1132 * PNG_INTERNAL section. Needs modification for other compilers besides
1133 * MSC. Model independent support declares all arrays and pointers to be
1134 * large using the far keyword. The zlib version used must also support
1135 * model independent data. As of version zlib 1.0.4, the necessary changes
1136 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1137 * changes that are needed. (Tim Wegner)
1138 */
1139
1140/* Separate compiler dependencies (problem here is that zlib.h always
1141 defines FAR. (SJT) */
1142#ifdef __BORLANDC__
1143# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1144# define LDATA 1
1145# else
1146# define LDATA 0
1147# endif
1148 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1149# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1150# define PNG_MAX_MALLOC_64K
1151# if (LDATA != 1)
1152# ifndef FAR
1153# define FAR __far
1154# endif
1155# define USE_FAR_KEYWORD
1156# endif /* LDATA != 1 */
1157 /* Possibly useful for moving data out of default segment.
1158 * Uncomment it if you want. Could also define FARDATA as
1159 * const if your compiler supports it. (SJT)
1160# define FARDATA FAR
1161 */
1162# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1163#endif /* __BORLANDC__ */
1164
1165
1166/* Suggest testing for specific compiler first before testing for
1167 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1168 * making reliance oncertain keywords suspect. (SJT)
1169 */
1170
1171/* MSC Medium model */
1172#if defined(FAR)
1173# if defined(M_I86MM)
1174# define USE_FAR_KEYWORD
1175# define FARDATA FAR
1176# include <dos.h>
1177# endif
1178#endif
1179
1180/* SJT: default case */
1181#ifndef FAR
1182# define FAR
1183#endif
1184
1185/* At this point FAR is always defined */
1186#ifndef FARDATA
1187# define FARDATA
1188#endif
1189
1190/* Typedef for floating-point numbers that are converted
1191 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1192typedef png_int_32 png_fixed_point;
1193
1194/* Add typedefs for pointers */
1195typedef void FAR * png_voidp;
1196typedef png_byte FAR * png_bytep;
1197typedef png_uint_32 FAR * png_uint_32p;
1198typedef png_int_32 FAR * png_int_32p;
1199typedef png_uint_16 FAR * png_uint_16p;
1200typedef png_int_16 FAR * png_int_16p;
1201typedef PNG_CONST char FAR * png_const_charp;
1202typedef char FAR * png_charp;
1203typedef png_fixed_point FAR * png_fixed_point_p;
1204
1205#ifndef PNG_NO_STDIO
1206#if defined(_WIN32_WCE)
1207typedef HANDLE png_FILE_p;
1208#else
1209typedef FILE * png_FILE_p;
1210#endif
1211#endif
1212
1213#ifdef PNG_FLOATING_POINT_SUPPORTED
1214typedef double FAR * png_doublep;
1215#endif
1216
1217/* Pointers to pointers; i.e. arrays */
1218typedef png_byte FAR * FAR * png_bytepp;
1219typedef png_uint_32 FAR * FAR * png_uint_32pp;
1220typedef png_int_32 FAR * FAR * png_int_32pp;
1221typedef png_uint_16 FAR * FAR * png_uint_16pp;
1222typedef png_int_16 FAR * FAR * png_int_16pp;
1223typedef PNG_CONST char FAR * FAR * png_const_charpp;
1224typedef char FAR * FAR * png_charpp;
1225typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1226#ifdef PNG_FLOATING_POINT_SUPPORTED
1227typedef double FAR * FAR * png_doublepp;
1228#endif
1229
1230/* Pointers to pointers to pointers; i.e., pointer to array */
1231typedef char FAR * FAR * FAR * png_charppp;
1232
1233#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1234/* SPC - Is this stuff deprecated? */
1235/* It'll be removed as of libpng-1.3.0 - GR-P */
1236/* libpng typedefs for types in zlib. If zlib changes
1237 * or another compression library is used, then change these.
1238 * Eliminates need to change all the source files.
1239 */
1240typedef charf * png_zcharp;
1241typedef charf * FAR * png_zcharpp;
1242typedef z_stream FAR * png_zstreamp;
1243#endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1244
1245/*
1246 * Define PNG_BUILD_DLL if the module being built is a Windows
1247 * LIBPNG DLL.
1248 *
1249 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1250 * It is equivalent to Microsoft predefined macro _DLL that is
1251 * automatically defined when you compile using the share
1252 * version of the CRT (C Run-Time library)
1253 *
1254 * The cygwin mods make this behavior a little different:
1255 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1256 * Define PNG_STATIC if you are building a static library for use with cygwin,
1257 * -or- if you are building an application that you want to link to the
1258 * static library.
1259 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1260 * the other flags is defined.
1261 */
1262
1263#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1264# define PNG_DLL
1265#endif
1266/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1267 * When building a static lib, default to no GLOBAL ARRAYS, but allow
1268 * command-line override
1269 */
1270#if defined(__CYGWIN__)
1271# if !defined(PNG_STATIC)
1272# if defined(PNG_USE_GLOBAL_ARRAYS)
1273# undef PNG_USE_GLOBAL_ARRAYS
1274# endif
1275# if !defined(PNG_USE_LOCAL_ARRAYS)
1276# define PNG_USE_LOCAL_ARRAYS
1277# endif
1278# else
1279# if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
1280# if defined(PNG_USE_GLOBAL_ARRAYS)
1281# undef PNG_USE_GLOBAL_ARRAYS
1282# endif
1283# endif
1284# endif
1285# if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1286# define PNG_USE_LOCAL_ARRAYS
1287# endif
1288#endif
1289
1290/* Do not use global arrays (helps with building DLL's)
1291 * They are no longer used in libpng itself, since version 1.0.5c,
1292 * but might be required for some pre-1.0.5c applications.
1293 */
1294#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1295# if defined(PNG_NO_GLOBAL_ARRAYS) || \
1296 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
1297# define PNG_USE_LOCAL_ARRAYS
1298# else
1299# define PNG_USE_GLOBAL_ARRAYS
1300# endif
1301#endif
1302
1303#if defined(__CYGWIN__)
1304# undef PNGAPI
1305# define PNGAPI __cdecl
1306# undef PNG_IMPEXP
1307# define PNG_IMPEXP
1308#endif
1309
1310/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1311 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1312 * Don't ignore those warnings; you must also reset the default calling
1313 * convention in your compiler to match your PNGAPI, and you must build
1314 * zlib and your applications the same way you build libpng.
1315 */
1316
1317#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1318# ifndef PNG_NO_MODULEDEF
1319# define PNG_NO_MODULEDEF
1320# endif
1321#endif
1322
1323#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1324# define PNG_IMPEXP
1325#endif
1326
1327#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1328 (( defined(_Windows) || defined(_WINDOWS) || \
1329 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1330
1331# ifndef PNGAPI
1332# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1333# define PNGAPI __cdecl
1334# else
1335# define PNGAPI _cdecl
1336# endif
1337# endif
1338
1339# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1340 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1341# define PNG_IMPEXP
1342# endif
1343
1344# if !defined(PNG_IMPEXP)
1345
1346# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1347# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1348
1349 /* Borland/Microsoft */
1350# if defined(_MSC_VER) || defined(__BORLANDC__)
1351# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1352# define PNG_EXPORT PNG_EXPORT_TYPE1
1353# else
1354# define PNG_EXPORT PNG_EXPORT_TYPE2
1355# if defined(PNG_BUILD_DLL)
1356# define PNG_IMPEXP __export
1357# else
1358# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
1359 VC++ */
1360# endif /* Exists in Borland C++ for
1361 C++ classes (== huge) */
1362# endif
1363# endif
1364
1365# if !defined(PNG_IMPEXP)
1366# if defined(PNG_BUILD_DLL)
1367# define PNG_IMPEXP __declspec(dllexport)
1368# else
1369# define PNG_IMPEXP __declspec(dllimport)
1370# endif
1371# endif
1372# endif /* PNG_IMPEXP */
1373#else /* !(DLL || non-cygwin WINDOWS) */
1374# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1375# ifndef PNGAPI
1376# define PNGAPI _System
1377# endif
1378# else
1379# if 0 /* ... other platforms, with other meanings */
1380# endif
1381# endif
1382#endif
1383
1384#ifndef PNGAPI
1385# define PNGAPI
1386#endif
1387#ifndef PNG_IMPEXP
1388# define PNG_IMPEXP
1389#endif
1390
1391#ifdef PNG_BUILDSYMS
1392# ifndef PNG_EXPORT
1393# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1394# endif
1395# ifdef PNG_USE_GLOBAL_ARRAYS
1396# ifndef PNG_EXPORT_VAR
1397# define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1398# endif
1399# endif
1400#endif
1401
1402#ifndef PNG_EXPORT
1403# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1404#endif
1405
1406#ifdef PNG_USE_GLOBAL_ARRAYS
1407# ifndef PNG_EXPORT_VAR
1408# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1409# endif
1410#endif
1411
1412/* User may want to use these so they are not in PNG_INTERNAL. Any library
1413 * functions that are passed far data must be model independent.
1414 */
1415
1416#ifndef PNG_ABORT
1417# define PNG_ABORT() abort()
1418#endif
1419
1420#ifdef PNG_SETJMP_SUPPORTED
1421# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1422#else
1423# define png_jmpbuf(png_ptr) \
1424 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1425#endif
1426
1427#if defined(USE_FAR_KEYWORD) /* memory model independent fns */
1428/* use this to make far-to-near assignments */
1429# define CHECK 1
1430# define NOCHECK 0
1431# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1432# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1433# define png_snprintf _fsnprintf /* Added to v 1.2.19 */
1434# define png_strcpy _fstrcpy
1435# define png_strncpy _fstrncpy /* Added to v 1.2.6 */
1436# define png_strlen _fstrlen
1437# define png_memcmp _fmemcmp /* SJT: added */
1438# define png_memcpy _fmemcpy
1439# define png_memset _fmemset
1440#else /* use the usual functions */
1441# define CVT_PTR(ptr) (ptr)
1442# define CVT_PTR_NOCHECK(ptr) (ptr)
1443# ifndef PNG_NO_SNPRINTF
1444# ifdef _MSC_VER
1445# define png_snprintf _snprintf /* Added to v 1.2.19 */
1446# define png_snprintf2 _snprintf
1447# define png_snprintf6 _snprintf
1448# else
1449# define png_snprintf snprintf /* Added to v 1.2.19 */
1450# define png_snprintf2 snprintf
1451# define png_snprintf6 snprintf
1452# endif
1453# else
1454 /* You don't have or don't want to use snprintf(). Caution: Using
1455 * sprintf instead of snprintf exposes your application to accidental
1456 * or malevolent buffer overflows. If you don't have snprintf()
1457 * as a general rule you should provide one (you can get one from
1458 * Portable OpenSSH). */
1459# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1460# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1461# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1462 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1463# endif
1464# define png_strcpy strcpy
1465# define png_strncpy strncpy /* Added to v 1.2.6 */
1466# define png_strlen strlen
1467# define png_memcmp memcmp /* SJT: added */
1468# define png_memcpy memcpy
1469# define png_memset memset
1470#endif
1471/* End of memory model independent support */
1472
1473/* Just a little check that someone hasn't tried to define something
1474 * contradictory.
1475 */
1476#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1477# undef PNG_ZBUF_SIZE
1478# define PNG_ZBUF_SIZE 65536L
1479#endif
1480
1481/* Added at libpng-1.2.8 */
1482#endif /* PNG_VERSION_INFO_ONLY */
1483
1484#endif /* PNGCONF_H */
wxWidgets (Impactor)