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[wxWidgets.git] / src / png / pngconf.h
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0272a10d
VZ		 1
2/* pngconf.h - machine configurable file for libpng
3 *
970f6abe 4 * libpng version 1.2.34 - December 18, 2008
0272a10d 5 * For conditions of distribution and use, see copyright notice in png.h
970f6abe 6 * Copyright (c) 1998-2008 Glenn Randers-Pehrson
0272a10d
VZ		 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
970f6abe
VZ		 83 Restored at libpng-1.2.21 */
84#if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \
85 !defined(PNG_WARN_UNINITIALIZED_ROW)
86# define PNG_WARN_UNINITIALIZED_ROW 1
87#endif
88/* End of material added at libpng-1.2.19/1.2.21 */
0272a10d
VZ		 89
90/* This is the size of the compression buffer, and thus the size of
91 * an IDAT chunk. Make this whatever size you feel is best for your
92 * machine. One of these will be allocated per png_struct. When this
93 * is full, it writes the data to the disk, and does some other
94 * calculations. Making this an extremely small size will slow
95 * the library down, but you may want to experiment to determine
96 * where it becomes significant, if you are concerned with memory
97 * usage. Note that zlib allocates at least 32Kb also. For readers,
98 * this describes the size of the buffer available to read the data in.
99 * Unless this gets smaller than the size of a row (compressed),
100 * it should not make much difference how big this is.
101 */
102
103#ifndef PNG_ZBUF_SIZE
104# define PNG_ZBUF_SIZE 8192
105#endif
106
107/* Enable if you want a write-only libpng */
108
109#ifndef PNG_NO_READ_SUPPORTED
110# define PNG_READ_SUPPORTED
111#endif
112
113/* Enable if you want a read-only libpng */
114
115#ifndef PNG_NO_WRITE_SUPPORTED
116# define PNG_WRITE_SUPPORTED
117#endif
118
119/* Enabled by default in 1.2.0. You can disable this if you don't need to
120 support PNGs that are embedded in MNG datastreams */
121#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
122# ifndef PNG_MNG_FEATURES_SUPPORTED
123# define PNG_MNG_FEATURES_SUPPORTED
124# endif
125#endif
126
127#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
128# ifndef PNG_FLOATING_POINT_SUPPORTED
129# define PNG_FLOATING_POINT_SUPPORTED
130# endif
131#endif
132
133/* If you are running on a machine where you cannot allocate more
134 * than 64K of memory at once, uncomment this. While libpng will not
135 * normally need that much memory in a chunk (unless you load up a very
136 * large file), zlib needs to know how big of a chunk it can use, and
137 * libpng thus makes sure to check any memory allocation to verify it
138 * will fit into memory.
139#define PNG_MAX_MALLOC_64K
140 */
141#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
142# define PNG_MAX_MALLOC_64K
143#endif
144
145/* Special munging to support doing things the 'cygwin' way:
146 * 'Normal' png-on-win32 defines/defaults:
147 * PNG_BUILD_DLL -- building dll
148 * PNG_USE_DLL -- building an application, linking to dll
149 * (no define) -- building static library, or building an
150 * application and linking to the static lib
151 * 'Cygwin' defines/defaults:
152 * PNG_BUILD_DLL -- (ignored) building the dll
153 * (no define) -- (ignored) building an application, linking to the dll
154 * PNG_STATIC -- (ignored) building the static lib, or building an
155 * application that links to the static lib.
156 * ALL_STATIC -- (ignored) building various static libs, or building an
157 * application that links to the static libs.
158 * Thus,
159 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
160 * this bit of #ifdefs will define the 'correct' config variables based on
161 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
162 * unnecessary.
163 *
164 * Also, the precedence order is:
165 * ALL_STATIC (since we can't #undef something outside our namespace)
166 * PNG_BUILD_DLL
167 * PNG_STATIC
168 * (nothing) == PNG_USE_DLL
169 *
170 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
171 * of auto-import in binutils, we no longer need to worry about
172 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
173 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
174 * to __declspec() stuff. However, we DO need to worry about
175 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
176 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
177 */
178#if defined(__CYGWIN__)
179# if defined(ALL_STATIC)
180# if defined(PNG_BUILD_DLL)
181# undef PNG_BUILD_DLL
182# endif
183# if defined(PNG_USE_DLL)
184# undef PNG_USE_DLL
185# endif
186# if defined(PNG_DLL)
187# undef PNG_DLL
188# endif
189# if !defined(PNG_STATIC)
190# define PNG_STATIC
191# endif
192# else
193# if defined (PNG_BUILD_DLL)
194# if defined(PNG_STATIC)
195# undef PNG_STATIC
196# endif
197# if defined(PNG_USE_DLL)
198# undef PNG_USE_DLL
199# endif
200# if !defined(PNG_DLL)
201# define PNG_DLL
202# endif
203# else
204# if defined(PNG_STATIC)
205# if defined(PNG_USE_DLL)
206# undef PNG_USE_DLL
207# endif
208# if defined(PNG_DLL)
209# undef PNG_DLL
210# endif
211# else
212# if !defined(PNG_USE_DLL)
213# define PNG_USE_DLL
214# endif
215# if !defined(PNG_DLL)
216# define PNG_DLL
217# endif
218# endif
219# endif
220# endif
221#endif
222
223/* This protects us against compilers that run on a windowing system
224 * and thus don't have or would rather us not use the stdio types:
225 * stdin, stdout, and stderr. The only one currently used is stderr
226 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
227 * prevent these from being compiled and used. #defining PNG_NO_STDIO
228 * will also prevent these, plus will prevent the entire set of stdio
229 * macros and functions (FILE *, printf, etc.) from being compiled and used,
230 * unless (PNG_DEBUG > 0) has been #defined.
231 *
232 * #define PNG_NO_CONSOLE_IO
233 * #define PNG_NO_STDIO
234 */
235
236#if defined(_WIN32_WCE)
237# include <windows.h>
238 /* Console I/O functions are not supported on WindowsCE */
239# define PNG_NO_CONSOLE_IO
240# ifdef PNG_DEBUG
241# undef PNG_DEBUG
242# endif
243#endif
244
245#ifdef PNG_BUILD_DLL
246# ifndef PNG_CONSOLE_IO_SUPPORTED
247# ifndef PNG_NO_CONSOLE_IO
248# define PNG_NO_CONSOLE_IO
249# endif
250# endif
251#endif
252
253# ifdef PNG_NO_STDIO
254# ifndef PNG_NO_CONSOLE_IO
255# define PNG_NO_CONSOLE_IO
256# endif
257# ifdef PNG_DEBUG
258# if (PNG_DEBUG > 0)
259# include <stdio.h>
260# endif
261# endif
262# else
263# if !defined(_WIN32_WCE)
264/* "stdio.h" functions are not supported on WindowsCE */
265# include <stdio.h>
266# endif
267# endif
268
269/* This macro protects us against machines that don't have function
270 * prototypes (ie K&R style headers). If your compiler does not handle
271 * function prototypes, define this macro and use the included ansi2knr.
272 * I've always been able to use _NO_PROTO as the indicator, but you may
273 * need to drag the empty declaration out in front of here, or change the
274 * ifdef to suit your own needs.
275 */
276#ifndef PNGARG
277
278#ifdef OF /* zlib prototype munger */
279# define PNGARG(arglist) OF(arglist)
280#else
281
282#ifdef _NO_PROTO
283# define PNGARG(arglist) ()
284# ifndef PNG_TYPECAST_NULL
285# define PNG_TYPECAST_NULL
286# endif
287#else
288# define PNGARG(arglist) arglist
289#endif /* _NO_PROTO */
290
291
292#endif /* OF */
293
294#endif /* PNGARG */
295
296/* Try to determine if we are compiling on a Mac. Note that testing for
297 * just __MWERKS__ is not good enough, because the Codewarrior is now used
298 * on non-Mac platforms.
299 */
300#ifndef MACOS
301# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
302 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
303# define MACOS
304# endif
305#endif
306
307/* enough people need this for various reasons to include it here */
308#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
309# include <sys/types.h>
310#endif
311
312#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
313# define PNG_SETJMP_SUPPORTED
314#endif
315
316#ifdef PNG_SETJMP_SUPPORTED
317/* This is an attempt to force a single setjmp behaviour on Linux. If
318 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
319 */
320
321# ifdef __linux__
322# ifdef _BSD_SOURCE
323# define PNG_SAVE_BSD_SOURCE
324# undef _BSD_SOURCE
325# endif
326# ifdef _SETJMP_H
327 /* If you encounter a compiler error here, see the explanation
328 * near the end of INSTALL.
329 */
970f6abe 330 __pngconf.h__ already includes setjmp.h;
0272a10d
VZ		 331 __dont__ include it again.;
332# endif
333# endif /* __linux__ */
334
335 /* include setjmp.h for error handling */
336# include <setjmp.h>
337
338# ifdef __linux__
339# ifdef PNG_SAVE_BSD_SOURCE
970f6abe
VZ		 340# ifndef _BSD_SOURCE
341# define _BSD_SOURCE
342# endif
0272a10d
VZ		 343# undef PNG_SAVE_BSD_SOURCE
344# endif
345# endif /* __linux__ */
346#endif /* PNG_SETJMP_SUPPORTED */
347
348#ifdef BSD
349# include <strings.h>
350#else
351# include <string.h>
352#endif
353
354/* Other defines for things like memory and the like can go here. */
355#ifdef PNG_INTERNAL
356
357#include <stdlib.h>
358
359/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
360 * aren't usually used outside the library (as far as I know), so it is
361 * debatable if they should be exported at all. In the future, when it is
362 * possible to have run-time registry of chunk-handling functions, some of
363 * these will be made available again.
364#define PNG_EXTERN extern
365 */
366#define PNG_EXTERN
367
368/* Other defines specific to compilers can go here. Try to keep
369 * them inside an appropriate ifdef/endif pair for portability.
370 */
371
372#if defined(PNG_FLOATING_POINT_SUPPORTED)
111ba6b8 373# if defined(MACOS) && !wxOSX_USE_IPHONE
0272a10d
VZ		 374 /* We need to check that <math.h> hasn't already been included earlier
375 * as it seems it doesn't agree with <fp.h>, yet we should really use
376 * <fp.h> if possible.
377 */
378# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
379# include <fp.h>
380# endif
381# else
382# include <math.h>
383# endif
384# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
385 /* Amiga SAS/C: We must include builtin FPU functions when compiling using
386 * MATH=68881
387 */
388# include <m68881.h>
389# endif
390#endif
391
392/* Codewarrior on NT has linking problems without this. */
393#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
394# define PNG_ALWAYS_EXTERN
395#endif
396
397/* This provides the non-ANSI (far) memory allocation routines. */
398#if defined(__TURBOC__) && defined(__MSDOS__)
399# include <mem.h>
400# include <alloc.h>
401#endif
402
403/* I have no idea why is this necessary... */
404#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
405 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
406# include <malloc.h>
407#endif
408
409/* This controls how fine the dithering gets. As this allocates
410 * a largish chunk of memory (32K), those who are not as concerned
411 * with dithering quality can decrease some or all of these.
412 */
413#ifndef PNG_DITHER_RED_BITS
414# define PNG_DITHER_RED_BITS 5
415#endif
416#ifndef PNG_DITHER_GREEN_BITS
417# define PNG_DITHER_GREEN_BITS 5
418#endif
419#ifndef PNG_DITHER_BLUE_BITS
420# define PNG_DITHER_BLUE_BITS 5
421#endif
422
423/* This controls how fine the gamma correction becomes when you
424 * are only interested in 8 bits anyway. Increasing this value
425 * results in more memory being used, and more pow() functions
426 * being called to fill in the gamma tables. Don't set this value
427 * less then 8, and even that may not work (I haven't tested it).
428 */
429
430#ifndef PNG_MAX_GAMMA_8
431# define PNG_MAX_GAMMA_8 11
432#endif
433
434/* This controls how much a difference in gamma we can tolerate before
435 * we actually start doing gamma conversion.
436 */
437#ifndef PNG_GAMMA_THRESHOLD
438# define PNG_GAMMA_THRESHOLD 0.05
439#endif
440
441#endif /* PNG_INTERNAL */
442
443/* The following uses const char * instead of char * for error
444 * and warning message functions, so some compilers won't complain.
445 * If you do not want to use const, define PNG_NO_CONST here.
446 */
447
448#ifndef PNG_NO_CONST
449# define PNG_CONST const
450#else
451# define PNG_CONST
452#endif
453
454/* The following defines give you the ability to remove code from the
455 * library that you will not be using. I wish I could figure out how to
456 * automate this, but I can't do that without making it seriously hard
457 * on the users. So if you are not using an ability, change the #define
458 * to and #undef, and that part of the library will not be compiled. If
459 * your linker can't find a function, you may want to make sure the
460 * ability is defined here. Some of these depend upon some others being
461 * defined. I haven't figured out all the interactions here, so you may
462 * have to experiment awhile to get everything to compile. If you are
463 * creating or using a shared library, you probably shouldn't touch this,
464 * as it will affect the size of the structures, and this will cause bad
465 * things to happen if the library and/or application ever change.
466 */
467
468/* Any features you will not be using can be undef'ed here */
469
470/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
471 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
472 * on the compile line, then pick and choose which ones to define without
473 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
474 * if you only want to have a png-compliant reader/writer but don't need
475 * any of the extra transformations. This saves about 80 kbytes in a
476 * typical installation of the library. (PNG_NO_* form added in version
477 * 1.0.1c, for consistency)
478 */
479
480/* The size of the png_text structure changed in libpng-1.0.6 when
481 * iTXt support was added. iTXt support was turned off by default through
482 * libpng-1.2.x, to support old apps that malloc the png_text structure
483 * instead of calling png_set_text() and letting libpng malloc it. It
484 * was turned on by default in libpng-1.3.0.
485 */
486
487#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
488# ifndef PNG_NO_iTXt_SUPPORTED
489# define PNG_NO_iTXt_SUPPORTED
490# endif
491# ifndef PNG_NO_READ_iTXt
492# define PNG_NO_READ_iTXt
493# endif
494# ifndef PNG_NO_WRITE_iTXt
495# define PNG_NO_WRITE_iTXt
496# endif
497#endif
498
499#if !defined(PNG_NO_iTXt_SUPPORTED)
500# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
501# define PNG_READ_iTXt
502# endif
503# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
504# define PNG_WRITE_iTXt
505# endif
506#endif
507
508/* The following support, added after version 1.0.0, can be turned off here en
509 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
510 * with old applications that require the length of png_struct and png_info
511 * to remain unchanged.
512 */
513
514#ifdef PNG_LEGACY_SUPPORTED
515# define PNG_NO_FREE_ME
516# define PNG_NO_READ_UNKNOWN_CHUNKS
517# define PNG_NO_WRITE_UNKNOWN_CHUNKS
518# define PNG_NO_READ_USER_CHUNKS
519# define PNG_NO_READ_iCCP
520# define PNG_NO_WRITE_iCCP
521# define PNG_NO_READ_iTXt
522# define PNG_NO_WRITE_iTXt
523# define PNG_NO_READ_sCAL
524# define PNG_NO_WRITE_sCAL
525# define PNG_NO_READ_sPLT
526# define PNG_NO_WRITE_sPLT
527# define PNG_NO_INFO_IMAGE
528# define PNG_NO_READ_RGB_TO_GRAY
529# define PNG_NO_READ_USER_TRANSFORM
530# define PNG_NO_WRITE_USER_TRANSFORM
531# define PNG_NO_USER_MEM
532# define PNG_NO_READ_EMPTY_PLTE
533# define PNG_NO_MNG_FEATURES
534# define PNG_NO_FIXED_POINT_SUPPORTED
535#endif
536
537/* Ignore attempt to turn off both floating and fixed point support */
538#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
539 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
540# define PNG_FIXED_POINT_SUPPORTED
541#endif
542
543#ifndef PNG_NO_FREE_ME
544# define PNG_FREE_ME_SUPPORTED
545#endif
546
547#if defined(PNG_READ_SUPPORTED)
548
549#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
550 !defined(PNG_NO_READ_TRANSFORMS)
551# define PNG_READ_TRANSFORMS_SUPPORTED
552#endif
553
554#ifdef PNG_READ_TRANSFORMS_SUPPORTED
555# ifndef PNG_NO_READ_EXPAND
556# define PNG_READ_EXPAND_SUPPORTED
557# endif
558# ifndef PNG_NO_READ_SHIFT
559# define PNG_READ_SHIFT_SUPPORTED
560# endif
561# ifndef PNG_NO_READ_PACK
562# define PNG_READ_PACK_SUPPORTED
563# endif
564# ifndef PNG_NO_READ_BGR
565# define PNG_READ_BGR_SUPPORTED
566# endif
567# ifndef PNG_NO_READ_SWAP
568# define PNG_READ_SWAP_SUPPORTED
569# endif
570# ifndef PNG_NO_READ_PACKSWAP
571# define PNG_READ_PACKSWAP_SUPPORTED
572# endif
573# ifndef PNG_NO_READ_INVERT
574# define PNG_READ_INVERT_SUPPORTED
575# endif
576# ifndef PNG_NO_READ_DITHER
577# define PNG_READ_DITHER_SUPPORTED
578# endif
579# ifndef PNG_NO_READ_BACKGROUND
580# define PNG_READ_BACKGROUND_SUPPORTED
581# endif
582# ifndef PNG_NO_READ_16_TO_8
583# define PNG_READ_16_TO_8_SUPPORTED
584# endif
585# ifndef PNG_NO_READ_FILLER
586# define PNG_READ_FILLER_SUPPORTED
587# endif
588# ifndef PNG_NO_READ_GAMMA
589# define PNG_READ_GAMMA_SUPPORTED
590# endif
591# ifndef PNG_NO_READ_GRAY_TO_RGB
592# define PNG_READ_GRAY_TO_RGB_SUPPORTED
593# endif
594# ifndef PNG_NO_READ_SWAP_ALPHA
595# define PNG_READ_SWAP_ALPHA_SUPPORTED
596# endif
597# ifndef PNG_NO_READ_INVERT_ALPHA
598# define PNG_READ_INVERT_ALPHA_SUPPORTED
599# endif
600# ifndef PNG_NO_READ_STRIP_ALPHA
601# define PNG_READ_STRIP_ALPHA_SUPPORTED
602# endif
603# ifndef PNG_NO_READ_USER_TRANSFORM
604# define PNG_READ_USER_TRANSFORM_SUPPORTED
605# endif
606# ifndef PNG_NO_READ_RGB_TO_GRAY
607# define PNG_READ_RGB_TO_GRAY_SUPPORTED
608# endif
609#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
610
611#if !defined(PNG_NO_PROGRESSIVE_READ) && \
612 !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive */
613# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
614#endif /* about interlacing capability! You'll */
615 /* still have interlacing unless you change the following line: */
616
617#define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
618
619#ifndef PNG_NO_READ_COMPOSITE_NODIV
620# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
621# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
622# endif
623#endif
624
625#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
626/* Deprecated, will be removed from version 2.0.0.
627 Use PNG_MNG_FEATURES_SUPPORTED instead. */
628#ifndef PNG_NO_READ_EMPTY_PLTE
629# define PNG_READ_EMPTY_PLTE_SUPPORTED
630#endif
631#endif
632
633#endif /* PNG_READ_SUPPORTED */
634
635#if defined(PNG_WRITE_SUPPORTED)
636
637# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
638 !defined(PNG_NO_WRITE_TRANSFORMS)
639# define PNG_WRITE_TRANSFORMS_SUPPORTED
640#endif
641
642#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
643# ifndef PNG_NO_WRITE_SHIFT
644# define PNG_WRITE_SHIFT_SUPPORTED
645# endif
646# ifndef PNG_NO_WRITE_PACK
647# define PNG_WRITE_PACK_SUPPORTED
648# endif
649# ifndef PNG_NO_WRITE_BGR
650# define PNG_WRITE_BGR_SUPPORTED
651# endif
652# ifndef PNG_NO_WRITE_SWAP
653# define PNG_WRITE_SWAP_SUPPORTED
654# endif
655# ifndef PNG_NO_WRITE_PACKSWAP
656# define PNG_WRITE_PACKSWAP_SUPPORTED
657# endif
658# ifndef PNG_NO_WRITE_INVERT
659# define PNG_WRITE_INVERT_SUPPORTED
660# endif
661# ifndef PNG_NO_WRITE_FILLER
662# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
663# endif
664# ifndef PNG_NO_WRITE_SWAP_ALPHA
665# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
666# endif
667# ifndef PNG_NO_WRITE_INVERT_ALPHA
668# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
669# endif
670# ifndef PNG_NO_WRITE_USER_TRANSFORM
671# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
672# endif
673#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
674
675#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
676 !defined(PNG_WRITE_INTERLACING_SUPPORTED)
677#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
678 encoders, but can cause trouble
679 if left undefined */
680#endif
681
682#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
683 !defined(PNG_WRITE_WEIGHTED_FILTER) && \
684 defined(PNG_FLOATING_POINT_SUPPORTED)
685# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
686#endif
687
688#ifndef PNG_NO_WRITE_FLUSH
689# define PNG_WRITE_FLUSH_SUPPORTED
690#endif
691
692#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
693/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
694#ifndef PNG_NO_WRITE_EMPTY_PLTE
695# define PNG_WRITE_EMPTY_PLTE_SUPPORTED
696#endif
697#endif
698
699#endif /* PNG_WRITE_SUPPORTED */
700
701#ifndef PNG_1_0_X
702# ifndef PNG_NO_ERROR_NUMBERS
703# define PNG_ERROR_NUMBERS_SUPPORTED
704# endif
705#endif /* PNG_1_0_X */
706
707#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
708 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
709# ifndef PNG_NO_USER_TRANSFORM_PTR
710# define PNG_USER_TRANSFORM_PTR_SUPPORTED
711# endif
712#endif
713
714#ifndef PNG_NO_STDIO
715# define PNG_TIME_RFC1123_SUPPORTED
716#endif
717
718/* This adds extra functions in pngget.c for accessing data from the
719 * info pointer (added in version 0.99)
720 * png_get_image_width()
721 * png_get_image_height()
722 * png_get_bit_depth()
723 * png_get_color_type()
724 * png_get_compression_type()
725 * png_get_filter_type()
726 * png_get_interlace_type()
727 * png_get_pixel_aspect_ratio()
728 * png_get_pixels_per_meter()
729 * png_get_x_offset_pixels()
730 * png_get_y_offset_pixels()
731 * png_get_x_offset_microns()
732 * png_get_y_offset_microns()
733 */
734#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
735# define PNG_EASY_ACCESS_SUPPORTED
736#endif
737
738/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
739 * and removed from version 1.2.20. The following will be removed
740 * from libpng-1.4.0
741*/
742
743#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
744# ifndef PNG_OPTIMIZED_CODE_SUPPORTED
745# define PNG_OPTIMIZED_CODE_SUPPORTED
746# endif
747#endif
748
749#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
750# ifndef PNG_ASSEMBLER_CODE_SUPPORTED
751# define PNG_ASSEMBLER_CODE_SUPPORTED
752# endif
753
754# if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
755 /* work around 64-bit gcc compiler bugs in gcc-3.x */
756# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
757# define PNG_NO_MMX_CODE
758# endif
759# endif
760
761# if defined(__APPLE__)
762# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
763# define PNG_NO_MMX_CODE
764# endif
765# endif
766
767# if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
768# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
769# define PNG_NO_MMX_CODE
770# endif
771# endif
772
773# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
774# define PNG_MMX_CODE_SUPPORTED
775# endif
776
777#endif
778/* end of obsolete code to be removed from libpng-1.4.0 */
779
780#if !defined(PNG_1_0_X)
781#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
782# define PNG_USER_MEM_SUPPORTED
783#endif
784#endif /* PNG_1_0_X */
785
786/* Added at libpng-1.2.6 */
787#if !defined(PNG_1_0_X)
788#ifndef PNG_SET_USER_LIMITS_SUPPORTED
789#if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
790# define PNG_SET_USER_LIMITS_SUPPORTED
791#endif
792#endif
793#endif /* PNG_1_0_X */
794
795/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
796 * how large, set these limits to 0x7fffffffL
797 */
798#ifndef PNG_USER_WIDTH_MAX
799# define PNG_USER_WIDTH_MAX 1000000L
800#endif
801#ifndef PNG_USER_HEIGHT_MAX
802# define PNG_USER_HEIGHT_MAX 1000000L
803#endif
804
970f6abe
VZ		 805
806/* Added at libpng-1.2.34 and 1.4.0 */
807#ifndef PNG_STRING_NEWLINE
808#define PNG_STRING_NEWLINE "\n"
809#endif
810
0272a10d
VZ		 811/* These are currently experimental features, define them if you want */
812
813/* very little testing */
814/*
815#ifdef PNG_READ_SUPPORTED
816# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
817# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
818# endif
819#endif
820*/
821
822/* This is only for PowerPC big-endian and 680x0 systems */
823/* some testing */
824/*
825#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
826# define PNG_READ_BIG_ENDIAN_SUPPORTED
827#endif
828*/
829
830/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
831/*
832#define PNG_NO_POINTER_INDEXING
833*/
834
835/* These functions are turned off by default, as they will be phased out. */
836/*
837#define PNG_USELESS_TESTS_SUPPORTED
838#define PNG_CORRECT_PALETTE_SUPPORTED
839*/
840
841/* Any chunks you are not interested in, you can undef here. The
842 * ones that allocate memory may be expecially important (hIST,
843 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
844 * a bit smaller.
845 */
846
847#if defined(PNG_READ_SUPPORTED) && \
848 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
849 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
850# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
851#endif
852
853#if defined(PNG_WRITE_SUPPORTED) && \
854 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
855 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
856# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
857#endif
858
859#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
860
861#ifdef PNG_NO_READ_TEXT
862# define PNG_NO_READ_iTXt
863# define PNG_NO_READ_tEXt
864# define PNG_NO_READ_zTXt
865#endif
866#ifndef PNG_NO_READ_bKGD
867# define PNG_READ_bKGD_SUPPORTED
868# define PNG_bKGD_SUPPORTED
869#endif
870#ifndef PNG_NO_READ_cHRM
871# define PNG_READ_cHRM_SUPPORTED
872# define PNG_cHRM_SUPPORTED
873#endif
874#ifndef PNG_NO_READ_gAMA
875# define PNG_READ_gAMA_SUPPORTED
876# define PNG_gAMA_SUPPORTED
877#endif
878#ifndef PNG_NO_READ_hIST
879# define PNG_READ_hIST_SUPPORTED
880# define PNG_hIST_SUPPORTED
881#endif
882#ifndef PNG_NO_READ_iCCP
883# define PNG_READ_iCCP_SUPPORTED
884# define PNG_iCCP_SUPPORTED
885#endif
886#ifndef PNG_NO_READ_iTXt
887# ifndef PNG_READ_iTXt_SUPPORTED
888# define PNG_READ_iTXt_SUPPORTED
889# endif
890# ifndef PNG_iTXt_SUPPORTED
891# define PNG_iTXt_SUPPORTED
892# endif
893#endif
894#ifndef PNG_NO_READ_oFFs
895# define PNG_READ_oFFs_SUPPORTED
896# define PNG_oFFs_SUPPORTED
897#endif
898#ifndef PNG_NO_READ_pCAL
899# define PNG_READ_pCAL_SUPPORTED
900# define PNG_pCAL_SUPPORTED
901#endif
902#ifndef PNG_NO_READ_sCAL
903# define PNG_READ_sCAL_SUPPORTED
904# define PNG_sCAL_SUPPORTED
905#endif
906#ifndef PNG_NO_READ_pHYs
907# define PNG_READ_pHYs_SUPPORTED
908# define PNG_pHYs_SUPPORTED
909#endif
910#ifndef PNG_NO_READ_sBIT
911# define PNG_READ_sBIT_SUPPORTED
912# define PNG_sBIT_SUPPORTED
913#endif
914#ifndef PNG_NO_READ_sPLT
915# define PNG_READ_sPLT_SUPPORTED
916# define PNG_sPLT_SUPPORTED
917#endif
918#ifndef PNG_NO_READ_sRGB
919# define PNG_READ_sRGB_SUPPORTED
920# define PNG_sRGB_SUPPORTED
921#endif
922#ifndef PNG_NO_READ_tEXt
923# define PNG_READ_tEXt_SUPPORTED
924# define PNG_tEXt_SUPPORTED
925#endif
926#ifndef PNG_NO_READ_tIME
927# define PNG_READ_tIME_SUPPORTED
928# define PNG_tIME_SUPPORTED
929#endif
930#ifndef PNG_NO_READ_tRNS
931# define PNG_READ_tRNS_SUPPORTED
932# define PNG_tRNS_SUPPORTED
933#endif
934#ifndef PNG_NO_READ_zTXt
935# define PNG_READ_zTXt_SUPPORTED
936# define PNG_zTXt_SUPPORTED
937#endif
938#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
939# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
940# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
941# define PNG_UNKNOWN_CHUNKS_SUPPORTED
942# endif
943# ifndef PNG_NO_HANDLE_AS_UNKNOWN
944# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
945# endif
946#endif
947#if !defined(PNG_NO_READ_USER_CHUNKS) && \
948 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
949# define PNG_READ_USER_CHUNKS_SUPPORTED
950# define PNG_USER_CHUNKS_SUPPORTED
951# ifdef PNG_NO_READ_UNKNOWN_CHUNKS
952# undef PNG_NO_READ_UNKNOWN_CHUNKS
953# endif
954# ifdef PNG_NO_HANDLE_AS_UNKNOWN
955# undef PNG_NO_HANDLE_AS_UNKNOWN
956# endif
957#endif
958#ifndef PNG_NO_READ_OPT_PLTE
959# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
960#endif /* optional PLTE chunk in RGB and RGBA images */
961#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
962 defined(PNG_READ_zTXt_SUPPORTED)
963# define PNG_READ_TEXT_SUPPORTED
964# define PNG_TEXT_SUPPORTED
965#endif
966
967#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
968
969#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
970
971#ifdef PNG_NO_WRITE_TEXT
972# define PNG_NO_WRITE_iTXt
973# define PNG_NO_WRITE_tEXt
974# define PNG_NO_WRITE_zTXt
975#endif
976#ifndef PNG_NO_WRITE_bKGD
977# define PNG_WRITE_bKGD_SUPPORTED
978# ifndef PNG_bKGD_SUPPORTED
979# define PNG_bKGD_SUPPORTED
980# endif
981#endif
982#ifndef PNG_NO_WRITE_cHRM
983# define PNG_WRITE_cHRM_SUPPORTED
984# ifndef PNG_cHRM_SUPPORTED
985# define PNG_cHRM_SUPPORTED
986# endif
987#endif
988#ifndef PNG_NO_WRITE_gAMA
989# define PNG_WRITE_gAMA_SUPPORTED
990# ifndef PNG_gAMA_SUPPORTED
991# define PNG_gAMA_SUPPORTED
992# endif
993#endif
994#ifndef PNG_NO_WRITE_hIST
995# define PNG_WRITE_hIST_SUPPORTED
996# ifndef PNG_hIST_SUPPORTED
997# define PNG_hIST_SUPPORTED
998# endif
999#endif
1000#ifndef PNG_NO_WRITE_iCCP
1001# define PNG_WRITE_iCCP_SUPPORTED
1002# ifndef PNG_iCCP_SUPPORTED
1003# define PNG_iCCP_SUPPORTED
1004# endif
1005#endif
1006#ifndef PNG_NO_WRITE_iTXt
1007# ifndef PNG_WRITE_iTXt_SUPPORTED
1008# define PNG_WRITE_iTXt_SUPPORTED
1009# endif
1010# ifndef PNG_iTXt_SUPPORTED
1011# define PNG_iTXt_SUPPORTED
1012# endif
1013#endif
1014#ifndef PNG_NO_WRITE_oFFs
1015# define PNG_WRITE_oFFs_SUPPORTED
1016# ifndef PNG_oFFs_SUPPORTED
1017# define PNG_oFFs_SUPPORTED
1018# endif
1019#endif
1020#ifndef PNG_NO_WRITE_pCAL
1021# define PNG_WRITE_pCAL_SUPPORTED
1022# ifndef PNG_pCAL_SUPPORTED
1023# define PNG_pCAL_SUPPORTED
1024# endif
1025#endif
1026#ifndef PNG_NO_WRITE_sCAL
1027# define PNG_WRITE_sCAL_SUPPORTED
1028# ifndef PNG_sCAL_SUPPORTED
1029# define PNG_sCAL_SUPPORTED
1030# endif
1031#endif
1032#ifndef PNG_NO_WRITE_pHYs
1033# define PNG_WRITE_pHYs_SUPPORTED
1034# ifndef PNG_pHYs_SUPPORTED
1035# define PNG_pHYs_SUPPORTED
1036# endif
1037#endif
1038#ifndef PNG_NO_WRITE_sBIT
1039# define PNG_WRITE_sBIT_SUPPORTED
1040# ifndef PNG_sBIT_SUPPORTED
1041# define PNG_sBIT_SUPPORTED
1042# endif
1043#endif
1044#ifndef PNG_NO_WRITE_sPLT
1045# define PNG_WRITE_sPLT_SUPPORTED
1046# ifndef PNG_sPLT_SUPPORTED
1047# define PNG_sPLT_SUPPORTED
1048# endif
1049#endif
1050#ifndef PNG_NO_WRITE_sRGB
1051# define PNG_WRITE_sRGB_SUPPORTED
1052# ifndef PNG_sRGB_SUPPORTED
1053# define PNG_sRGB_SUPPORTED
1054# endif
1055#endif
1056#ifndef PNG_NO_WRITE_tEXt
1057# define PNG_WRITE_tEXt_SUPPORTED
1058# ifndef PNG_tEXt_SUPPORTED
1059# define PNG_tEXt_SUPPORTED
1060# endif
1061#endif
1062#ifndef PNG_NO_WRITE_tIME
1063# define PNG_WRITE_tIME_SUPPORTED
1064# ifndef PNG_tIME_SUPPORTED
1065# define PNG_tIME_SUPPORTED
1066# endif
1067#endif
1068#ifndef PNG_NO_WRITE_tRNS
1069# define PNG_WRITE_tRNS_SUPPORTED
1070# ifndef PNG_tRNS_SUPPORTED
1071# define PNG_tRNS_SUPPORTED
1072# endif
1073#endif
1074#ifndef PNG_NO_WRITE_zTXt
1075# define PNG_WRITE_zTXt_SUPPORTED
1076# ifndef PNG_zTXt_SUPPORTED
1077# define PNG_zTXt_SUPPORTED
1078# endif
1079#endif
1080#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1081# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1082# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1083# define PNG_UNKNOWN_CHUNKS_SUPPORTED
1084# endif
1085# ifndef PNG_NO_HANDLE_AS_UNKNOWN
1086# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1087# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1088# endif
1089# endif
1090#endif
1091#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1092 defined(PNG_WRITE_zTXt_SUPPORTED)
1093# define PNG_WRITE_TEXT_SUPPORTED
1094# ifndef PNG_TEXT_SUPPORTED
1095# define PNG_TEXT_SUPPORTED
1096# endif
1097#endif
1098
1099#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1100
1101/* Turn this off to disable png_read_png() and
1102 * png_write_png() and leave the row_pointers member
1103 * out of the info structure.
1104 */
1105#ifndef PNG_NO_INFO_IMAGE
1106# define PNG_INFO_IMAGE_SUPPORTED
1107#endif
1108
1109/* need the time information for reading tIME chunks */
1110#if defined(PNG_tIME_SUPPORTED)
1111# if !defined(_WIN32_WCE)
1112 /* "time.h" functions are not supported on WindowsCE */
1113# include <time.h>
1114# endif
1115#endif
1116
1117/* Some typedefs to get us started. These should be safe on most of the
1118 * common platforms. The typedefs should be at least as large as the
1119 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1120 * don't have to be exactly that size. Some compilers dislike passing
1121 * unsigned shorts as function parameters, so you may be better off using
1122 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
1123 * want to have unsigned int for png_uint_32 instead of unsigned long.
1124 */
1125
1126typedef unsigned long png_uint_32;
1127typedef long png_int_32;
1128typedef unsigned short png_uint_16;
1129typedef short png_int_16;
1130typedef unsigned char png_byte;
1131
1132/* This is usually size_t. It is typedef'ed just in case you need it to
1133 change (I'm not sure if you will or not, so I thought I'd be safe) */
1134#ifdef PNG_SIZE_T
1135 typedef PNG_SIZE_T png_size_t;
970f6abe 1136# define png_sizeof(x) png_convert_size(sizeof(x))
0272a10d
VZ		 1137#else
1138 typedef size_t png_size_t;
970f6abe 1139# define png_sizeof(x) sizeof(x)
0272a10d
VZ		 1140#endif
1141
1142/* The following is needed for medium model support. It cannot be in the
1143 * PNG_INTERNAL section. Needs modification for other compilers besides
1144 * MSC. Model independent support declares all arrays and pointers to be
1145 * large using the far keyword. The zlib version used must also support
1146 * model independent data. As of version zlib 1.0.4, the necessary changes
1147 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1148 * changes that are needed. (Tim Wegner)
1149 */
1150
1151/* Separate compiler dependencies (problem here is that zlib.h always
1152 defines FAR. (SJT) */
1153#ifdef __BORLANDC__
1154# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1155# define LDATA 1
1156# else
1157# define LDATA 0
1158# endif
1159 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1160# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1161# define PNG_MAX_MALLOC_64K
1162# if (LDATA != 1)
1163# ifndef FAR
1164# define FAR __far
1165# endif
1166# define USE_FAR_KEYWORD
1167# endif /* LDATA != 1 */
1168 /* Possibly useful for moving data out of default segment.
1169 * Uncomment it if you want. Could also define FARDATA as
1170 * const if your compiler supports it. (SJT)
1171# define FARDATA FAR
1172 */
1173# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1174#endif /* __BORLANDC__ */
1175
1176
1177/* Suggest testing for specific compiler first before testing for
1178 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1179 * making reliance oncertain keywords suspect. (SJT)
1180 */
1181
1182/* MSC Medium model */
1183#if defined(FAR)
1184# if defined(M_I86MM)
1185# define USE_FAR_KEYWORD
1186# define FARDATA FAR
1187# include <dos.h>
1188# endif
1189#endif
1190
1191/* SJT: default case */
1192#ifndef FAR
1193# define FAR
1194#endif
1195
1196/* At this point FAR is always defined */
1197#ifndef FARDATA
1198# define FARDATA
1199#endif
1200
1201/* Typedef for floating-point numbers that are converted
1202 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1203typedef png_int_32 png_fixed_point;
1204
1205/* Add typedefs for pointers */
1206typedef void FAR * png_voidp;
1207typedef png_byte FAR * png_bytep;
1208typedef png_uint_32 FAR * png_uint_32p;
1209typedef png_int_32 FAR * png_int_32p;
1210typedef png_uint_16 FAR * png_uint_16p;
1211typedef png_int_16 FAR * png_int_16p;
1212typedef PNG_CONST char FAR * png_const_charp;
1213typedef char FAR * png_charp;
1214typedef png_fixed_point FAR * png_fixed_point_p;
1215
1216#ifndef PNG_NO_STDIO
1217#if defined(_WIN32_WCE)
1218typedef HANDLE png_FILE_p;
1219#else
1220typedef FILE * png_FILE_p;
1221#endif
1222#endif
1223
1224#ifdef PNG_FLOATING_POINT_SUPPORTED
1225typedef double FAR * png_doublep;
1226#endif
1227
1228/* Pointers to pointers; i.e. arrays */
1229typedef png_byte FAR * FAR * png_bytepp;
1230typedef png_uint_32 FAR * FAR * png_uint_32pp;
1231typedef png_int_32 FAR * FAR * png_int_32pp;
1232typedef png_uint_16 FAR * FAR * png_uint_16pp;
1233typedef png_int_16 FAR * FAR * png_int_16pp;
1234typedef PNG_CONST char FAR * FAR * png_const_charpp;
1235typedef char FAR * FAR * png_charpp;
1236typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1237#ifdef PNG_FLOATING_POINT_SUPPORTED
1238typedef double FAR * FAR * png_doublepp;
1239#endif
1240
1241/* Pointers to pointers to pointers; i.e., pointer to array */
1242typedef char FAR * FAR * FAR * png_charppp;
1243
1244#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1245/* SPC - Is this stuff deprecated? */
1246/* It'll be removed as of libpng-1.3.0 - GR-P */
1247/* libpng typedefs for types in zlib. If zlib changes
1248 * or another compression library is used, then change these.
1249 * Eliminates need to change all the source files.
1250 */
1251typedef charf * png_zcharp;
1252typedef charf * FAR * png_zcharpp;
1253typedef z_stream FAR * png_zstreamp;
1254#endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1255
1256/*
1257 * Define PNG_BUILD_DLL if the module being built is a Windows
1258 * LIBPNG DLL.
1259 *
1260 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1261 * It is equivalent to Microsoft predefined macro _DLL that is
1262 * automatically defined when you compile using the share
1263 * version of the CRT (C Run-Time library)
1264 *
1265 * The cygwin mods make this behavior a little different:
1266 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1267 * Define PNG_STATIC if you are building a static library for use with cygwin,
1268 * -or- if you are building an application that you want to link to the
1269 * static library.
1270 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1271 * the other flags is defined.
1272 */
1273
1274#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1275# define PNG_DLL
1276#endif
1277/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1278 * When building a static lib, default to no GLOBAL ARRAYS, but allow
1279 * command-line override
1280 */
1281#if defined(__CYGWIN__)
1282# if !defined(PNG_STATIC)
1283# if defined(PNG_USE_GLOBAL_ARRAYS)
1284# undef PNG_USE_GLOBAL_ARRAYS
1285# endif
1286# if !defined(PNG_USE_LOCAL_ARRAYS)
1287# define PNG_USE_LOCAL_ARRAYS
1288# endif
1289# else
1290# if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
1291# if defined(PNG_USE_GLOBAL_ARRAYS)
1292# undef PNG_USE_GLOBAL_ARRAYS
1293# endif
1294# endif
1295# endif
1296# if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1297# define PNG_USE_LOCAL_ARRAYS
1298# endif
1299#endif
1300
1301/* Do not use global arrays (helps with building DLL's)
1302 * They are no longer used in libpng itself, since version 1.0.5c,
1303 * but might be required for some pre-1.0.5c applications.
1304 */
1305#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1306# if defined(PNG_NO_GLOBAL_ARRAYS) || \
1307 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
1308# define PNG_USE_LOCAL_ARRAYS
1309# else
1310# define PNG_USE_GLOBAL_ARRAYS
1311# endif
1312#endif
1313
1314#if defined(__CYGWIN__)
1315# undef PNGAPI
1316# define PNGAPI __cdecl
1317# undef PNG_IMPEXP
1318# define PNG_IMPEXP
1319#endif
1320
1321/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1322 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1323 * Don't ignore those warnings; you must also reset the default calling
1324 * convention in your compiler to match your PNGAPI, and you must build
1325 * zlib and your applications the same way you build libpng.
1326 */
1327
1328#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1329# ifndef PNG_NO_MODULEDEF
1330# define PNG_NO_MODULEDEF
1331# endif
1332#endif
1333
1334#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1335# define PNG_IMPEXP
1336#endif
1337
1338#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1339 (( defined(_Windows) || defined(_WINDOWS) || \
1340 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1341
1342# ifndef PNGAPI
1343# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1344# define PNGAPI __cdecl
1345# else
1346# define PNGAPI _cdecl
1347# endif
1348# endif
1349
1350# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1351 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1352# define PNG_IMPEXP
1353# endif
1354
1355# if !defined(PNG_IMPEXP)
1356
1357# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1358# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1359
1360 /* Borland/Microsoft */
1361# if defined(_MSC_VER) || defined(__BORLANDC__)
1362# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1363# define PNG_EXPORT PNG_EXPORT_TYPE1
1364# else
1365# define PNG_EXPORT PNG_EXPORT_TYPE2
1366# if defined(PNG_BUILD_DLL)
1367# define PNG_IMPEXP __export
1368# else
1369# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
1370 VC++ */
1371# endif /* Exists in Borland C++ for
1372 C++ classes (== huge) */
1373# endif
1374# endif
1375
1376# if !defined(PNG_IMPEXP)
1377# if defined(PNG_BUILD_DLL)
1378# define PNG_IMPEXP __declspec(dllexport)
1379# else
1380# define PNG_IMPEXP __declspec(dllimport)
1381# endif
1382# endif
1383# endif /* PNG_IMPEXP */
1384#else /* !(DLL || non-cygwin WINDOWS) */
1385# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1386# ifndef PNGAPI
1387# define PNGAPI _System
1388# endif
1389# else
1390# if 0 /* ... other platforms, with other meanings */
1391# endif
1392# endif
1393#endif
1394
1395#ifndef PNGAPI
1396# define PNGAPI
1397#endif
1398#ifndef PNG_IMPEXP
1399# define PNG_IMPEXP
1400#endif
1401
1402#ifdef PNG_BUILDSYMS
1403# ifndef PNG_EXPORT
1404# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1405# endif
1406# ifdef PNG_USE_GLOBAL_ARRAYS
1407# ifndef PNG_EXPORT_VAR
1408# define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1409# endif
1410# endif
1411#endif
1412
1413#ifndef PNG_EXPORT
1414# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1415#endif
1416
1417#ifdef PNG_USE_GLOBAL_ARRAYS
1418# ifndef PNG_EXPORT_VAR
1419# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1420# endif
1421#endif
1422
1423/* User may want to use these so they are not in PNG_INTERNAL. Any library
1424 * functions that are passed far data must be model independent.
1425 */
1426
1427#ifndef PNG_ABORT
1428# define PNG_ABORT() abort()
1429#endif
1430
1431#ifdef PNG_SETJMP_SUPPORTED
1432# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1433#else
1434# define png_jmpbuf(png_ptr) \
1435 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1436#endif
1437
1438#if defined(USE_FAR_KEYWORD) /* memory model independent fns */
1439/* use this to make far-to-near assignments */
1440# define CHECK 1
1441# define NOCHECK 0
1442# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1443# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1444# define png_snprintf _fsnprintf /* Added to v 1.2.19 */
0272a10d
VZ		 1445# define png_strlen _fstrlen
1446# define png_memcmp _fmemcmp /* SJT: added */
1447# define png_memcpy _fmemcpy
1448# define png_memset _fmemset
1449#else /* use the usual functions */
1450# define CVT_PTR(ptr) (ptr)
1451# define CVT_PTR_NOCHECK(ptr) (ptr)
1452# ifndef PNG_NO_SNPRINTF
1453# ifdef _MSC_VER
1454# define png_snprintf _snprintf /* Added to v 1.2.19 */
1455# define png_snprintf2 _snprintf
1456# define png_snprintf6 _snprintf
1457# else
1458# define png_snprintf snprintf /* Added to v 1.2.19 */
1459# define png_snprintf2 snprintf
1460# define png_snprintf6 snprintf
1461# endif
1462# else
1463 /* You don't have or don't want to use snprintf(). Caution: Using
1464 * sprintf instead of snprintf exposes your application to accidental
1465 * or malevolent buffer overflows. If you don't have snprintf()
1466 * as a general rule you should provide one (you can get one from
1467 * Portable OpenSSH). */
1468# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1469# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1470# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1471 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1472# endif
0272a10d
VZ		 1473# define png_strlen strlen
1474# define png_memcmp memcmp /* SJT: added */
1475# define png_memcpy memcpy
1476# define png_memset memset
1477#endif
1478/* End of memory model independent support */
1479
1480/* Just a little check that someone hasn't tried to define something
1481 * contradictory.
1482 */
1483#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1484# undef PNG_ZBUF_SIZE
1485# define PNG_ZBUF_SIZE 65536L
1486#endif
1487
1488/* Added at libpng-1.2.8 */
1489#endif /* PNG_VERSION_INFO_ONLY */
1490
1491#endif /* PNGCONF_H */
wxWidgets (Impactor)