source: trunk/src/3rdparty/libpng/pngconf.h@ 753

Last change on this file since 753 was 561, checked in by Dmitry A. Kuminov, 16 years ago

trunk: Merged in qt 4.6.1 sources.
File size: 44.8 KB
Line 
1
2/* pngconf.h - machine configurable file for libpng
3 *
4 * libpng version 1.2.40 - September 10, 2009
5 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
8 *
9 * This code is released under the libpng license.
10 * For conditions of distribution and use, see the disclaimer
11 * and license in png.h
12 */
13
14/* Any machine specific code is near the front of this file, so if you
15 * are configuring libpng for a machine, you may want to read the section
16 * starting here down to where it starts to typedef png_color, png_text,
17 * and png_info.
18 */
19
20#ifndef PNGCONF_H
21#define PNGCONF_H
22
23#define PNG_1_2_X
24
25/*
26 * PNG_USER_CONFIG has to be defined on the compiler command line. This
27 * includes the resource compiler for Windows DLL configurations.
28 */
29#ifdef PNG_USER_CONFIG
30# ifndef PNG_USER_PRIVATEBUILD
31# define PNG_USER_PRIVATEBUILD
32# endif
33#include "pngusr.h"
34#endif
35
36/* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
37#ifdef PNG_CONFIGURE_LIBPNG
38#ifdef HAVE_CONFIG_H
39#include "config.h"
40#endif
41#endif
42
43/*
44 * Added at libpng-1.2.8
45 *
46 * If you create a private DLL you need to define in "pngusr.h" the followings:
47 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
48 * the DLL was built>
49 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
50 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
51 * distinguish your DLL from those of the official release. These
52 * correspond to the trailing letters that come after the version
53 * number and must match your private DLL name>
54 * e.g. // private DLL "libpng13gx.dll"
55 * #define PNG_USER_DLLFNAME_POSTFIX "gx"
56 *
57 * The following macros are also at your disposal if you want to complete the
58 * DLL VERSIONINFO structure.
59 * - PNG_USER_VERSIONINFO_COMMENTS
60 * - PNG_USER_VERSIONINFO_COMPANYNAME
61 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
62 */
63
64#ifdef __STDC__
65#ifdef SPECIALBUILD
66# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
67 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
68#endif
69
70#ifdef PRIVATEBUILD
71# pragma message("PRIVATEBUILD is deprecated.\
72 Use PNG_USER_PRIVATEBUILD instead.")
73# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
74#endif
75#endif /* __STDC__ */
76
77#ifndef PNG_VERSION_INFO_ONLY
78
79/* End of material added to libpng-1.2.8 */
80
81/* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble
82 Restored at libpng-1.2.21 */
83#if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \
84 !defined(PNG_WARN_UNINITIALIZED_ROW)
85# define PNG_WARN_UNINITIALIZED_ROW 1
86#endif
87/* End of material added at libpng-1.2.19/1.2.21 */
88
89/* This is the size of the compression buffer, and thus the size of
90 * an IDAT chunk. Make this whatever size you feel is best for your
91 * machine. One of these will be allocated per png_struct. When this
92 * is full, it writes the data to the disk, and does some other
93 * calculations. Making this an extremely small size will slow
94 * the library down, but you may want to experiment to determine
95 * where it becomes significant, if you are concerned with memory
96 * usage. Note that zlib allocates at least 32Kb also. For readers,
97 * this describes the size of the buffer available to read the data in.
98 * Unless this gets smaller than the size of a row (compressed),
99 * it should not make much difference how big this is.
100 */
101
102#ifndef PNG_ZBUF_SIZE
103# define PNG_ZBUF_SIZE 8192
104#endif
105
106/* Enable if you want a write-only libpng */
107
108#ifndef PNG_NO_READ_SUPPORTED
109# define PNG_READ_SUPPORTED
110#endif
111
112/* Enable if you want a read-only libpng */
113
114#ifndef PNG_NO_WRITE_SUPPORTED
115# define PNG_WRITE_SUPPORTED
116#endif
117
118/* Enabled by default in 1.2.0. You can disable this if you don't need to
119 support PNGs that are embedded in MNG datastreams */
120#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
121# ifndef PNG_MNG_FEATURES_SUPPORTED
122# define PNG_MNG_FEATURES_SUPPORTED
123# endif
124#endif
125
126#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
127# ifndef PNG_FLOATING_POINT_SUPPORTED
128# define PNG_FLOATING_POINT_SUPPORTED
129# endif
130#endif
131
132/* If you are running on a machine where you cannot allocate more
133 * than 64K of memory at once, uncomment this. While libpng will not
134 * normally need that much memory in a chunk (unless you load up a very
135 * large file), zlib needs to know how big of a chunk it can use, and
136 * libpng thus makes sure to check any memory allocation to verify it
137 * will fit into memory.
138#define PNG_MAX_MALLOC_64K
139 */
140#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
141# define PNG_MAX_MALLOC_64K
142#endif
143
144/* Special munging to support doing things the 'cygwin' way:
145 * 'Normal' png-on-win32 defines/defaults:
146 * PNG_BUILD_DLL -- building dll
147 * PNG_USE_DLL -- building an application, linking to dll
148 * (no define) -- building static library, or building an
149 * application and linking to the static lib
150 * 'Cygwin' defines/defaults:
151 * PNG_BUILD_DLL -- (ignored) building the dll
152 * (no define) -- (ignored) building an application, linking to the dll
153 * PNG_STATIC -- (ignored) building the static lib, or building an
154 * application that links to the static lib.
155 * ALL_STATIC -- (ignored) building various static libs, or building an
156 * application that links to the static libs.
157 * Thus,
158 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
159 * this bit of #ifdefs will define the 'correct' config variables based on
160 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
161 * unnecessary.
162 *
163 * Also, the precedence order is:
164 * ALL_STATIC (since we can't #undef something outside our namespace)
165 * PNG_BUILD_DLL
166 * PNG_STATIC
167 * (nothing) == PNG_USE_DLL
168 *
169 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
170 * of auto-import in binutils, we no longer need to worry about
171 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
172 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
173 * to __declspec() stuff. However, we DO need to worry about
174 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
175 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
176 */
177#if defined(__CYGWIN__)
178# if defined(ALL_STATIC)
179# if defined(PNG_BUILD_DLL)
180# undef PNG_BUILD_DLL
181# endif
182# if defined(PNG_USE_DLL)
183# undef PNG_USE_DLL
184# endif
185# if defined(PNG_DLL)
186# undef PNG_DLL
187# endif
188# if !defined(PNG_STATIC)
189# define PNG_STATIC
190# endif
191# else
192# if defined (PNG_BUILD_DLL)
193# if defined(PNG_STATIC)
194# undef PNG_STATIC
195# endif
196# if defined(PNG_USE_DLL)
197# undef PNG_USE_DLL
198# endif
199# if !defined(PNG_DLL)
200# define PNG_DLL
201# endif
202# else
203# if defined(PNG_STATIC)
204# if defined(PNG_USE_DLL)
205# undef PNG_USE_DLL
206# endif
207# if defined(PNG_DLL)
208# undef PNG_DLL
209# endif
210# else
211# if !defined(PNG_USE_DLL)
212# define PNG_USE_DLL
213# endif
214# if !defined(PNG_DLL)
215# define PNG_DLL
216# endif
217# endif
218# endif
219# endif
220#endif
221
222/* This protects us against compilers that run on a windowing system
223 * and thus don't have or would rather us not use the stdio types:
224 * stdin, stdout, and stderr. The only one currently used is stderr
225 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
226 * prevent these from being compiled and used. #defining PNG_NO_STDIO
227 * will also prevent these, plus will prevent the entire set of stdio
228 * macros and functions (FILE *, printf, etc.) from being compiled and used,
229 * unless (PNG_DEBUG > 0) has been #defined.
230 *
231 * #define PNG_NO_CONSOLE_IO
232 * #define PNG_NO_STDIO
233 */
234
235#if defined(_WIN32_WCE)
236# include <windows.h>
237 /* Console I/O functions are not supported on WindowsCE */
238# define PNG_NO_CONSOLE_IO
239 /* abort() may not be supported on some/all Windows CE platforms */
240# define PNG_ABORT() exit(-1)
241# ifdef PNG_DEBUG
242# undef PNG_DEBUG
243# endif
244#endif
245
246#ifdef PNG_BUILD_DLL
247# ifndef PNG_CONSOLE_IO_SUPPORTED
248# ifndef PNG_NO_CONSOLE_IO
249# define PNG_NO_CONSOLE_IO
250# endif
251# endif
252#endif
253
254# ifdef PNG_NO_STDIO
255# ifndef PNG_NO_CONSOLE_IO
256# define PNG_NO_CONSOLE_IO
257# endif
258# ifdef PNG_DEBUG
259# if (PNG_DEBUG > 0)
260# include <stdio.h>
261# endif
262# endif
263# else
264# if !defined(_WIN32_WCE)
265/* "stdio.h" functions are not supported on WindowsCE */
266# include <stdio.h>
267# endif
268# endif
269
270/* This macro protects us against machines that don't have function
271 * prototypes (ie K&R style headers). If your compiler does not handle
272 * function prototypes, define this macro and use the included ansi2knr.
273 * I've always been able to use _NO_PROTO as the indicator, but you may
274 * need to drag the empty declaration out in front of here, or change the
275 * ifdef to suit your own needs.
276 */
277#ifndef PNGARG
278
279#ifdef OF /* zlib prototype munger */
280# define PNGARG(arglist) OF(arglist)
281#else
282
283#ifdef _NO_PROTO
284# define PNGARG(arglist) ()
285# ifndef PNG_TYPECAST_NULL
286# define PNG_TYPECAST_NULL
287# endif
288#else
289# define PNGARG(arglist) arglist
290#endif /* _NO_PROTO */
291
292
293#endif /* OF */
294
295#endif /* PNGARG */
296
297/* Try to determine if we are compiling on a Mac. Note that testing for
298 * just __MWERKS__ is not good enough, because the Codewarrior is now used
299 * on non-Mac platforms.
300 */
301#ifndef MACOS
302# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
303 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
304# define MACOS
305# endif
306#endif
307
308/* enough people need this for various reasons to include it here */
309#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
310# include <sys/types.h>
311#endif
312
313#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
314# define PNG_SETJMP_SUPPORTED
315#endif
316
317#ifdef PNG_SETJMP_SUPPORTED
318/* This is an attempt to force a single setjmp behaviour on Linux. If
319 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
320 *
321 * You can bypass this test if you know that your application uses exactly
322 * the same setjmp.h that was included when libpng was built. Only define
323 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
324 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
325 * while building a separate libpng library for general use.
326 */
327
328# ifndef PNG_SKIP_SETJMP_CHECK
329# ifdef __linux__
330# ifdef _BSD_SOURCE
331# define PNG_SAVE_BSD_SOURCE
332# undef _BSD_SOURCE
333# endif
334# ifdef _SETJMP_H
335 /* If you encounter a compiler error here, see the explanation
336 * near the end of INSTALL.
337 */
338 __pngconf.h__ in libpng already includes setjmp.h;
339 __dont__ include it again.;
340# endif
341# endif /* __linux__ */
342# endif /* PNG_SKIP_SETJMP_CHECK */
343
344 /* include setjmp.h for error handling */
345# include <setjmp.h>
346
347# ifdef __linux__
348# ifdef PNG_SAVE_BSD_SOURCE
349# ifndef _BSD_SOURCE
350# define _BSD_SOURCE
351# endif
352# undef PNG_SAVE_BSD_SOURCE
353# endif
354# endif /* __linux__ */
355#endif /* PNG_SETJMP_SUPPORTED */
356
357#if defined(BSD) && !defined(VXWORKS)
358# include <strings.h>
359#else
360# include <string.h>
361#endif
362
363/* Other defines for things like memory and the like can go here. */
364#ifdef PNG_INTERNAL
365
366#include <stdlib.h>
367
368/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
369 * aren't usually used outside the library (as far as I know), so it is
370 * debatable if they should be exported at all. In the future, when it is
371 * possible to have run-time registry of chunk-handling functions, some of
372 * these will be made available again.
373#define PNG_EXTERN extern
374 */
375#define PNG_EXTERN
376
377/* Other defines specific to compilers can go here. Try to keep
378 * them inside an appropriate ifdef/endif pair for portability.
379 */
380
381#if defined(PNG_FLOATING_POINT_SUPPORTED)
382# if defined(MACOS)
383 /* We need to check that <math.h> hasn't already been included earlier
384 * as it seems it doesn't agree with <fp.h>, yet we should really use
385 * <fp.h> if possible.
386 */
387# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
388# include <fp.h>
389# endif
390# else
391# include <math.h>
392# endif
393# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
394 /* Amiga SAS/C: We must include builtin FPU functions when compiling using
395 * MATH=68881
396 */
397# include <m68881.h>
398# endif
399#endif
400
401/* Codewarrior on NT has linking problems without this. */
402#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
403# define PNG_ALWAYS_EXTERN
404#endif
405
406/* This provides the non-ANSI (far) memory allocation routines. */
407#if defined(__TURBOC__) && defined(__MSDOS__)
408# include <mem.h>
409# include <alloc.h>
410#endif
411
412/* I have no idea why is this necessary... */
413#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
414 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
415# include <malloc.h>
416#endif
417
418/* This controls how fine the dithering gets. As this allocates
419 * a largish chunk of memory (32K), those who are not as concerned
420 * with dithering quality can decrease some or all of these.
421 */
422#ifndef PNG_DITHER_RED_BITS
423# define PNG_DITHER_RED_BITS 5
424#endif
425#ifndef PNG_DITHER_GREEN_BITS
426# define PNG_DITHER_GREEN_BITS 5
427#endif
428#ifndef PNG_DITHER_BLUE_BITS
429# define PNG_DITHER_BLUE_BITS 5
430#endif
431
432/* This controls how fine the gamma correction becomes when you
433 * are only interested in 8 bits anyway. Increasing this value
434 * results in more memory being used, and more pow() functions
435 * being called to fill in the gamma tables. Don't set this value
436 * less then 8, and even that may not work (I haven't tested it).
437 */
438
439#ifndef PNG_MAX_GAMMA_8
440# define PNG_MAX_GAMMA_8 11
441#endif
442
443/* This controls how much a difference in gamma we can tolerate before
444 * we actually start doing gamma conversion.
445 */
446#ifndef PNG_GAMMA_THRESHOLD
447# define PNG_GAMMA_THRESHOLD 0.05
448#endif
449
450#endif /* PNG_INTERNAL */
451
452/* The following uses const char * instead of char * for error
453 * and warning message functions, so some compilers won't complain.
454 * If you do not want to use const, define PNG_NO_CONST here.
455 */
456
457#ifndef PNG_NO_CONST
458# define PNG_CONST const
459#else
460# define PNG_CONST
461#endif
462
463/* The following defines give you the ability to remove code from the
464 * library that you will not be using. I wish I could figure out how to
465 * automate this, but I can't do that without making it seriously hard
466 * on the users. So if you are not using an ability, change the #define
467 * to and #undef, and that part of the library will not be compiled. If
468 * your linker can't find a function, you may want to make sure the
469 * ability is defined here. Some of these depend upon some others being
470 * defined. I haven't figured out all the interactions here, so you may
471 * have to experiment awhile to get everything to compile. If you are
472 * creating or using a shared library, you probably shouldn't touch this,
473 * as it will affect the size of the structures, and this will cause bad
474 * things to happen if the library and/or application ever change.
475 */
476
477/* Any features you will not be using can be undef'ed here */
478
479/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
480 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
481 * on the compile line, then pick and choose which ones to define without
482 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
483 * if you only want to have a png-compliant reader/writer but don't need
484 * any of the extra transformations. This saves about 80 kbytes in a
485 * typical installation of the library. (PNG_NO_* form added in version
486 * 1.0.1c, for consistency)
487 */
488
489/* The size of the png_text structure changed in libpng-1.0.6 when
490 * iTXt support was added. iTXt support was turned off by default through
491 * libpng-1.2.x, to support old apps that malloc the png_text structure
492 * instead of calling png_set_text() and letting libpng malloc it. It
493 * will be turned on by default in libpng-1.4.0.
494 */
495
496#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
497# ifndef PNG_NO_iTXt_SUPPORTED
498# define PNG_NO_iTXt_SUPPORTED
499# endif
500# ifndef PNG_NO_READ_iTXt
501# define PNG_NO_READ_iTXt
502# endif
503# ifndef PNG_NO_WRITE_iTXt
504# define PNG_NO_WRITE_iTXt
505# endif
506#endif
507
508#if !defined(PNG_NO_iTXt_SUPPORTED)
509# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
510# define PNG_READ_iTXt
511# endif
512# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
513# define PNG_WRITE_iTXt
514# endif
515#endif
516
517/* The following support, added after version 1.0.0, can be turned off here en
518 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
519 * with old applications that require the length of png_struct and png_info
520 * to remain unchanged.
521 */
522
523#ifdef PNG_LEGACY_SUPPORTED
524# define PNG_NO_FREE_ME
525# define PNG_NO_READ_UNKNOWN_CHUNKS
526# define PNG_NO_WRITE_UNKNOWN_CHUNKS
527# define PNG_NO_HANDLE_AS_UNKNOWN
528# define PNG_NO_READ_USER_CHUNKS
529# define PNG_NO_READ_iCCP
530# define PNG_NO_WRITE_iCCP
531# define PNG_NO_READ_iTXt
532# define PNG_NO_WRITE_iTXt
533# define PNG_NO_READ_sCAL
534# define PNG_NO_WRITE_sCAL
535# define PNG_NO_READ_sPLT
536# define PNG_NO_WRITE_sPLT
537# define PNG_NO_INFO_IMAGE
538# define PNG_NO_READ_RGB_TO_GRAY
539# define PNG_NO_READ_USER_TRANSFORM
540# define PNG_NO_WRITE_USER_TRANSFORM
541# define PNG_NO_USER_MEM
542# define PNG_NO_READ_EMPTY_PLTE
543# define PNG_NO_MNG_FEATURES
544# define PNG_NO_FIXED_POINT_SUPPORTED
545#endif
546
547/* Ignore attempt to turn off both floating and fixed point support */
548#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
549 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
550# define PNG_FIXED_POINT_SUPPORTED
551#endif
552
553#ifndef PNG_NO_FREE_ME
554# define PNG_FREE_ME_SUPPORTED
555#endif
556
557#ifdef PNG_READ_SUPPORTED
558
559#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
560 !defined(PNG_NO_READ_TRANSFORMS)
561# define PNG_READ_TRANSFORMS_SUPPORTED
562#endif
563
564#ifdef PNG_READ_TRANSFORMS_SUPPORTED
565# ifndef PNG_NO_READ_EXPAND
566# define PNG_READ_EXPAND_SUPPORTED
567# endif
568# ifndef PNG_NO_READ_SHIFT
569# define PNG_READ_SHIFT_SUPPORTED
570# endif
571# ifndef PNG_NO_READ_PACK
572# define PNG_READ_PACK_SUPPORTED
573# endif
574# ifndef PNG_NO_READ_BGR
575# define PNG_READ_BGR_SUPPORTED
576# endif
577# ifndef PNG_NO_READ_SWAP
578# define PNG_READ_SWAP_SUPPORTED
579# endif
580# ifndef PNG_NO_READ_PACKSWAP
581# define PNG_READ_PACKSWAP_SUPPORTED
582# endif
583# ifndef PNG_NO_READ_INVERT
584# define PNG_READ_INVERT_SUPPORTED
585# endif
586# ifndef PNG_NO_READ_DITHER
587# define PNG_READ_DITHER_SUPPORTED
588# endif
589# ifndef PNG_NO_READ_BACKGROUND
590# define PNG_READ_BACKGROUND_SUPPORTED
591# endif
592# ifndef PNG_NO_READ_16_TO_8
593# define PNG_READ_16_TO_8_SUPPORTED
594# endif
595# ifndef PNG_NO_READ_FILLER
596# define PNG_READ_FILLER_SUPPORTED
597# endif
598# ifndef PNG_NO_READ_GAMMA
599# define PNG_READ_GAMMA_SUPPORTED
600# endif
601# ifndef PNG_NO_READ_GRAY_TO_RGB
602# define PNG_READ_GRAY_TO_RGB_SUPPORTED
603# endif
604# ifndef PNG_NO_READ_SWAP_ALPHA
605# define PNG_READ_SWAP_ALPHA_SUPPORTED
606# endif
607# ifndef PNG_NO_READ_INVERT_ALPHA
608# define PNG_READ_INVERT_ALPHA_SUPPORTED
609# endif
610# ifndef PNG_NO_READ_STRIP_ALPHA
611# define PNG_READ_STRIP_ALPHA_SUPPORTED
612# endif
613# ifndef PNG_NO_READ_USER_TRANSFORM
614# define PNG_READ_USER_TRANSFORM_SUPPORTED
615# endif
616# ifndef PNG_NO_READ_RGB_TO_GRAY
617# define PNG_READ_RGB_TO_GRAY_SUPPORTED
618# endif
619#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
620
621#if !defined(PNG_NO_PROGRESSIVE_READ) && \
622 !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive */
623# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
624#endif /* about interlacing capability! You'll */
625 /* still have interlacing unless you change the following line: */
626
627#define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
628
629#ifndef PNG_NO_READ_COMPOSITE_NODIV
630# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
631# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
632# endif
633#endif
634
635#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
636/* Deprecated, will be removed from version 2.0.0.
637 Use PNG_MNG_FEATURES_SUPPORTED instead. */
638#ifndef PNG_NO_READ_EMPTY_PLTE
639# define PNG_READ_EMPTY_PLTE_SUPPORTED
640#endif
641#endif
642
643#endif /* PNG_READ_SUPPORTED */
644
645#ifdef PNG_WRITE_SUPPORTED
646
647# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
648 !defined(PNG_NO_WRITE_TRANSFORMS)
649# define PNG_WRITE_TRANSFORMS_SUPPORTED
650#endif
651
652#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
653# ifndef PNG_NO_WRITE_SHIFT
654# define PNG_WRITE_SHIFT_SUPPORTED
655# endif
656# ifndef PNG_NO_WRITE_PACK
657# define PNG_WRITE_PACK_SUPPORTED
658# endif
659# ifndef PNG_NO_WRITE_BGR
660# define PNG_WRITE_BGR_SUPPORTED
661# endif
662# ifndef PNG_NO_WRITE_SWAP
663# define PNG_WRITE_SWAP_SUPPORTED
664# endif
665# ifndef PNG_NO_WRITE_PACKSWAP
666# define PNG_WRITE_PACKSWAP_SUPPORTED
667# endif
668# ifndef PNG_NO_WRITE_INVERT
669# define PNG_WRITE_INVERT_SUPPORTED
670# endif
671# ifndef PNG_NO_WRITE_FILLER
672# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
673# endif
674# ifndef PNG_NO_WRITE_SWAP_ALPHA
675# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
676# endif
677# ifndef PNG_NO_WRITE_INVERT_ALPHA
678# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
679# endif
680# ifndef PNG_NO_WRITE_USER_TRANSFORM
681# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
682# endif
683#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
684
685#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
686 !defined(PNG_WRITE_INTERLACING_SUPPORTED)
687#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
688 encoders, but can cause trouble
689 if left undefined */
690#endif
691
692#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
693 !defined(PNG_WRITE_WEIGHTED_FILTER) && \
694 defined(PNG_FLOATING_POINT_SUPPORTED)
695# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
696#endif
697
698#ifndef PNG_NO_WRITE_FLUSH
699# define PNG_WRITE_FLUSH_SUPPORTED
700#endif
701
702#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
703/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
704#ifndef PNG_NO_WRITE_EMPTY_PLTE
705# define PNG_WRITE_EMPTY_PLTE_SUPPORTED
706#endif
707#endif
708
709#endif /* PNG_WRITE_SUPPORTED */
710
711#ifndef PNG_1_0_X
712# ifndef PNG_NO_ERROR_NUMBERS
713# define PNG_ERROR_NUMBERS_SUPPORTED
714# endif
715#endif /* PNG_1_0_X */
716
717#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
718 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
719# ifndef PNG_NO_USER_TRANSFORM_PTR
720# define PNG_USER_TRANSFORM_PTR_SUPPORTED
721# endif
722#endif
723
724#ifndef PNG_NO_STDIO
725# define PNG_TIME_RFC1123_SUPPORTED
726#endif
727
728/* This adds extra functions in pngget.c for accessing data from the
729 * info pointer (added in version 0.99)
730 * png_get_image_width()
731 * png_get_image_height()
732 * png_get_bit_depth()
733 * png_get_color_type()
734 * png_get_compression_type()
735 * png_get_filter_type()
736 * png_get_interlace_type()
737 * png_get_pixel_aspect_ratio()
738 * png_get_pixels_per_meter()
739 * png_get_x_offset_pixels()
740 * png_get_y_offset_pixels()
741 * png_get_x_offset_microns()
742 * png_get_y_offset_microns()
743 */
744#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
745# define PNG_EASY_ACCESS_SUPPORTED
746#endif
747
748/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
749 * and removed from version 1.2.20. The following will be removed
750 * from libpng-1.4.0
751*/
752
753#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
754# ifndef PNG_OPTIMIZED_CODE_SUPPORTED
755# define PNG_OPTIMIZED_CODE_SUPPORTED
756# endif
757#endif
758
759#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
760# ifndef PNG_ASSEMBLER_CODE_SUPPORTED
761# define PNG_ASSEMBLER_CODE_SUPPORTED
762# endif
763
764# if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
765 /* work around 64-bit gcc compiler bugs in gcc-3.x */
766# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
767# define PNG_NO_MMX_CODE
768# endif
769# endif
770
771# if defined(__APPLE__)
772# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
773# define PNG_NO_MMX_CODE
774# endif
775# endif
776
777# if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
778# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
779# define PNG_NO_MMX_CODE
780# endif
781# endif
782
783# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
784# define PNG_MMX_CODE_SUPPORTED
785# endif
786
787#endif
788/* end of obsolete code to be removed from libpng-1.4.0 */
789
790#if !defined(PNG_1_0_X)
791#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
792# define PNG_USER_MEM_SUPPORTED
793#endif
794#endif /* PNG_1_0_X */
795
796/* Added at libpng-1.2.6 */
797#if !defined(PNG_1_0_X)
798#ifndef PNG_SET_USER_LIMITS_SUPPORTED
799#if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
800# define PNG_SET_USER_LIMITS_SUPPORTED
801#endif
802#endif
803#endif /* PNG_1_0_X */
804
805/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
806 * how large, set these limits to 0x7fffffffL
807 */
808#ifndef PNG_USER_WIDTH_MAX
809# define PNG_USER_WIDTH_MAX 1000000L
810#endif
811#ifndef PNG_USER_HEIGHT_MAX
812# define PNG_USER_HEIGHT_MAX 1000000L
813#endif
814
815/* Added at libpng-1.2.34 and 1.4.0 */
816#ifndef PNG_STRING_NEWLINE
817#define PNG_STRING_NEWLINE "\n"
818#endif
819
820/* These are currently experimental features, define them if you want */
821
822/* very little testing */
823/*
824#ifdef PNG_READ_SUPPORTED
825# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
826# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
827# endif
828#endif
829*/
830
831/* This is only for PowerPC big-endian and 680x0 systems */
832/* some testing */
833/*
834#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
835# define PNG_READ_BIG_ENDIAN_SUPPORTED
836#endif
837*/
838
839/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
840/*
841#define PNG_NO_POINTER_INDEXING
842*/
843
844/* These functions are turned off by default, as they will be phased out. */
845/*
846#define PNG_USELESS_TESTS_SUPPORTED
847#define PNG_CORRECT_PALETTE_SUPPORTED
848*/
849
850/* Any chunks you are not interested in, you can undef here. The
851 * ones that allocate memory may be expecially important (hIST,
852 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
853 * a bit smaller.
854 */
855
856#if defined(PNG_READ_SUPPORTED) && \
857 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
858 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
859# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
860#endif
861
862#if defined(PNG_WRITE_SUPPORTED) && \
863 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
864 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
865# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
866#endif
867
868#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
869
870#ifdef PNG_NO_READ_TEXT
871# define PNG_NO_READ_iTXt
872# define PNG_NO_READ_tEXt
873# define PNG_NO_READ_zTXt
874#endif
875#ifndef PNG_NO_READ_bKGD
876# define PNG_READ_bKGD_SUPPORTED
877# define PNG_bKGD_SUPPORTED
878#endif
879#ifndef PNG_NO_READ_cHRM
880# define PNG_READ_cHRM_SUPPORTED
881# define PNG_cHRM_SUPPORTED
882#endif
883#ifndef PNG_NO_READ_gAMA
884# define PNG_READ_gAMA_SUPPORTED
885# define PNG_gAMA_SUPPORTED
886#endif
887#ifndef PNG_NO_READ_hIST
888# define PNG_READ_hIST_SUPPORTED
889# define PNG_hIST_SUPPORTED
890#endif
891#ifndef PNG_NO_READ_iCCP
892# define PNG_READ_iCCP_SUPPORTED
893# define PNG_iCCP_SUPPORTED
894#endif
895#ifndef PNG_NO_READ_iTXt
896# ifndef PNG_READ_iTXt_SUPPORTED
897# define PNG_READ_iTXt_SUPPORTED
898# endif
899# ifndef PNG_iTXt_SUPPORTED
900# define PNG_iTXt_SUPPORTED
901# endif
902#endif
903#ifndef PNG_NO_READ_oFFs
904# define PNG_READ_oFFs_SUPPORTED
905# define PNG_oFFs_SUPPORTED
906#endif
907#ifndef PNG_NO_READ_pCAL
908# define PNG_READ_pCAL_SUPPORTED
909# define PNG_pCAL_SUPPORTED
910#endif
911#ifndef PNG_NO_READ_sCAL
912# define PNG_READ_sCAL_SUPPORTED
913# define PNG_sCAL_SUPPORTED
914#endif
915#ifndef PNG_NO_READ_pHYs
916# define PNG_READ_pHYs_SUPPORTED
917# define PNG_pHYs_SUPPORTED
918#endif
919#ifndef PNG_NO_READ_sBIT
920# define PNG_READ_sBIT_SUPPORTED
921# define PNG_sBIT_SUPPORTED
922#endif
923#ifndef PNG_NO_READ_sPLT
924# define PNG_READ_sPLT_SUPPORTED
925# define PNG_sPLT_SUPPORTED
926#endif
927#ifndef PNG_NO_READ_sRGB
928# define PNG_READ_sRGB_SUPPORTED
929# define PNG_sRGB_SUPPORTED
930#endif
931#ifndef PNG_NO_READ_tEXt
932# define PNG_READ_tEXt_SUPPORTED
933# define PNG_tEXt_SUPPORTED
934#endif
935#ifndef PNG_NO_READ_tIME
936# define PNG_READ_tIME_SUPPORTED
937# define PNG_tIME_SUPPORTED
938#endif
939#ifndef PNG_NO_READ_tRNS
940# define PNG_READ_tRNS_SUPPORTED
941# define PNG_tRNS_SUPPORTED
942#endif
943#ifndef PNG_NO_READ_zTXt
944# define PNG_READ_zTXt_SUPPORTED
945# define PNG_zTXt_SUPPORTED
946#endif
947#ifndef PNG_NO_READ_OPT_PLTE
948# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
949#endif /* optional PLTE chunk in RGB and RGBA images */
950#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
951 defined(PNG_READ_zTXt_SUPPORTED)
952# define PNG_READ_TEXT_SUPPORTED
953# define PNG_TEXT_SUPPORTED
954#endif
955
956#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
957
958#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
959# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
960# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
961# define PNG_UNKNOWN_CHUNKS_SUPPORTED
962# endif
963#endif
964#if !defined(PNG_NO_READ_USER_CHUNKS) && \
965 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
966# define PNG_READ_USER_CHUNKS_SUPPORTED
967# define PNG_USER_CHUNKS_SUPPORTED
968# ifdef PNG_NO_READ_UNKNOWN_CHUNKS
969# undef PNG_NO_READ_UNKNOWN_CHUNKS
970# endif
971# ifdef PNG_NO_HANDLE_AS_UNKNOWN
972# undef PNG_NO_HANDLE_AS_UNKNOWN
973# endif
974#endif
975
976#ifndef PNG_NO_HANDLE_AS_UNKNOWN
977# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
978# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
979# endif
980#endif
981
982#ifdef PNG_WRITE_SUPPORTED
983#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
984
985#ifdef PNG_NO_WRITE_TEXT
986# define PNG_NO_WRITE_iTXt
987# define PNG_NO_WRITE_tEXt
988# define PNG_NO_WRITE_zTXt
989#endif
990#ifndef PNG_NO_WRITE_bKGD
991# define PNG_WRITE_bKGD_SUPPORTED
992# ifndef PNG_bKGD_SUPPORTED
993# define PNG_bKGD_SUPPORTED
994# endif
995#endif
996#ifndef PNG_NO_WRITE_cHRM
997# define PNG_WRITE_cHRM_SUPPORTED
998# ifndef PNG_cHRM_SUPPORTED
999# define PNG_cHRM_SUPPORTED
1000# endif
1001#endif
1002#ifndef PNG_NO_WRITE_gAMA
1003# define PNG_WRITE_gAMA_SUPPORTED
1004# ifndef PNG_gAMA_SUPPORTED
1005# define PNG_gAMA_SUPPORTED
1006# endif
1007#endif
1008#ifndef PNG_NO_WRITE_hIST
1009# define PNG_WRITE_hIST_SUPPORTED
1010# ifndef PNG_hIST_SUPPORTED
1011# define PNG_hIST_SUPPORTED
1012# endif
1013#endif
1014#ifndef PNG_NO_WRITE_iCCP
1015# define PNG_WRITE_iCCP_SUPPORTED
1016# ifndef PNG_iCCP_SUPPORTED
1017# define PNG_iCCP_SUPPORTED
1018# endif
1019#endif
1020#ifndef PNG_NO_WRITE_iTXt
1021# ifndef PNG_WRITE_iTXt_SUPPORTED
1022# define PNG_WRITE_iTXt_SUPPORTED
1023# endif
1024# ifndef PNG_iTXt_SUPPORTED
1025# define PNG_iTXt_SUPPORTED
1026# endif
1027#endif
1028#ifndef PNG_NO_WRITE_oFFs
1029# define PNG_WRITE_oFFs_SUPPORTED
1030# ifndef PNG_oFFs_SUPPORTED
1031# define PNG_oFFs_SUPPORTED
1032# endif
1033#endif
1034#ifndef PNG_NO_WRITE_pCAL
1035# define PNG_WRITE_pCAL_SUPPORTED
1036# ifndef PNG_pCAL_SUPPORTED
1037# define PNG_pCAL_SUPPORTED
1038# endif
1039#endif
1040#ifndef PNG_NO_WRITE_sCAL
1041# define PNG_WRITE_sCAL_SUPPORTED
1042# ifndef PNG_sCAL_SUPPORTED
1043# define PNG_sCAL_SUPPORTED
1044# endif
1045#endif
1046#ifndef PNG_NO_WRITE_pHYs
1047# define PNG_WRITE_pHYs_SUPPORTED
1048# ifndef PNG_pHYs_SUPPORTED
1049# define PNG_pHYs_SUPPORTED
1050# endif
1051#endif
1052#ifndef PNG_NO_WRITE_sBIT
1053# define PNG_WRITE_sBIT_SUPPORTED
1054# ifndef PNG_sBIT_SUPPORTED
1055# define PNG_sBIT_SUPPORTED
1056# endif
1057#endif
1058#ifndef PNG_NO_WRITE_sPLT
1059# define PNG_WRITE_sPLT_SUPPORTED
1060# ifndef PNG_sPLT_SUPPORTED
1061# define PNG_sPLT_SUPPORTED
1062# endif
1063#endif
1064#ifndef PNG_NO_WRITE_sRGB
1065# define PNG_WRITE_sRGB_SUPPORTED
1066# ifndef PNG_sRGB_SUPPORTED
1067# define PNG_sRGB_SUPPORTED
1068# endif
1069#endif
1070#ifndef PNG_NO_WRITE_tEXt
1071# define PNG_WRITE_tEXt_SUPPORTED
1072# ifndef PNG_tEXt_SUPPORTED
1073# define PNG_tEXt_SUPPORTED
1074# endif
1075#endif
1076#ifndef PNG_NO_WRITE_tIME
1077# define PNG_WRITE_tIME_SUPPORTED
1078# ifndef PNG_tIME_SUPPORTED
1079# define PNG_tIME_SUPPORTED
1080# endif
1081#endif
1082#ifndef PNG_NO_WRITE_tRNS
1083# define PNG_WRITE_tRNS_SUPPORTED
1084# ifndef PNG_tRNS_SUPPORTED
1085# define PNG_tRNS_SUPPORTED
1086# endif
1087#endif
1088#ifndef PNG_NO_WRITE_zTXt
1089# define PNG_WRITE_zTXt_SUPPORTED
1090# ifndef PNG_zTXt_SUPPORTED
1091# define PNG_zTXt_SUPPORTED
1092# endif
1093#endif
1094#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1095 defined(PNG_WRITE_zTXt_SUPPORTED)
1096# define PNG_WRITE_TEXT_SUPPORTED
1097# ifndef PNG_TEXT_SUPPORTED
1098# define PNG_TEXT_SUPPORTED
1099# endif
1100#endif
1101
1102#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1103
1104#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1105# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1106# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1107# define PNG_UNKNOWN_CHUNKS_SUPPORTED
1108# endif
1109#endif
1110
1111#ifndef PNG_NO_HANDLE_AS_UNKNOWN
1112# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1113# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1114# endif
1115#endif
1116#endif /* PNG_WRITE_SUPPORTED */
1117
1118/* Turn this off to disable png_read_png() and
1119 * png_write_png() and leave the row_pointers member
1120 * out of the info structure.
1121 */
1122#ifndef PNG_NO_INFO_IMAGE
1123# define PNG_INFO_IMAGE_SUPPORTED
1124#endif
1125
1126/* need the time information for reading tIME chunks */
1127#if defined(PNG_tIME_SUPPORTED)
1128# if !defined(_WIN32_WCE)
1129 /* "time.h" functions are not supported on WindowsCE */
1130# include <time.h>
1131# endif
1132#endif
1133
1134/* Some typedefs to get us started. These should be safe on most of the
1135 * common platforms. The typedefs should be at least as large as the
1136 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1137 * don't have to be exactly that size. Some compilers dislike passing
1138 * unsigned shorts as function parameters, so you may be better off using
1139 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
1140 * want to have unsigned int for png_uint_32 instead of unsigned long.
1141 */
1142
1143typedef unsigned long png_uint_32;
1144typedef long png_int_32;
1145typedef unsigned short png_uint_16;
1146typedef short png_int_16;
1147typedef unsigned char png_byte;
1148
1149/* This is usually size_t. It is typedef'ed just in case you need it to
1150 change (I'm not sure if you will or not, so I thought I'd be safe) */
1151#ifdef PNG_SIZE_T
1152 typedef PNG_SIZE_T png_size_t;
1153# define png_sizeof(x) png_convert_size(sizeof(x))
1154#else
1155 typedef size_t png_size_t;
1156# define png_sizeof(x) sizeof(x)
1157#endif
1158
1159/* The following is needed for medium model support. It cannot be in the
1160 * PNG_INTERNAL section. Needs modification for other compilers besides
1161 * MSC. Model independent support declares all arrays and pointers to be
1162 * large using the far keyword. The zlib version used must also support
1163 * model independent data. As of version zlib 1.0.4, the necessary changes
1164 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1165 * changes that are needed. (Tim Wegner)
1166 */
1167
1168/* Separate compiler dependencies (problem here is that zlib.h always
1169 defines FAR. (SJT) */
1170#ifdef __BORLANDC__
1171# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1172# define LDATA 1
1173# else
1174# define LDATA 0
1175# endif
1176 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1177# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1178# define PNG_MAX_MALLOC_64K
1179# if (LDATA != 1)
1180# ifndef FAR
1181# define FAR __far
1182# endif
1183# define USE_FAR_KEYWORD
1184# endif /* LDATA != 1 */
1185 /* Possibly useful for moving data out of default segment.
1186 * Uncomment it if you want. Could also define FARDATA as
1187 * const if your compiler supports it. (SJT)
1188# define FARDATA FAR
1189 */
1190# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1191#endif /* __BORLANDC__ */
1192
1193
1194/* Suggest testing for specific compiler first before testing for
1195 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1196 * making reliance oncertain keywords suspect. (SJT)
1197 */
1198
1199/* MSC Medium model */
1200#if defined(FAR)
1201# if defined(M_I86MM)
1202# define USE_FAR_KEYWORD
1203# define FARDATA FAR
1204# include <dos.h>
1205# endif
1206#endif
1207
1208/* SJT: default case */
1209#ifndef FAR
1210# define FAR
1211#endif
1212
1213/* At this point FAR is always defined */
1214#ifndef FARDATA
1215# define FARDATA
1216#endif
1217
1218/* Typedef for floating-point numbers that are converted
1219 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1220typedef png_int_32 png_fixed_point;
1221
1222/* Add typedefs for pointers */
1223typedef void FAR * png_voidp;
1224typedef png_byte FAR * png_bytep;
1225typedef png_uint_32 FAR * png_uint_32p;
1226typedef png_int_32 FAR * png_int_32p;
1227typedef png_uint_16 FAR * png_uint_16p;
1228typedef png_int_16 FAR * png_int_16p;
1229typedef PNG_CONST char FAR * png_const_charp;
1230typedef char FAR * png_charp;
1231typedef png_fixed_point FAR * png_fixed_point_p;
1232
1233#ifndef PNG_NO_STDIO
1234#if defined(_WIN32_WCE)
1235typedef HANDLE png_FILE_p;
1236#else
1237typedef FILE * png_FILE_p;
1238#endif
1239#endif
1240
1241#ifdef PNG_FLOATING_POINT_SUPPORTED
1242typedef double FAR * png_doublep;
1243#endif
1244
1245/* Pointers to pointers; i.e. arrays */
1246typedef png_byte FAR * FAR * png_bytepp;
1247typedef png_uint_32 FAR * FAR * png_uint_32pp;
1248typedef png_int_32 FAR * FAR * png_int_32pp;
1249typedef png_uint_16 FAR * FAR * png_uint_16pp;
1250typedef png_int_16 FAR * FAR * png_int_16pp;
1251typedef PNG_CONST char FAR * FAR * png_const_charpp;
1252typedef char FAR * FAR * png_charpp;
1253typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1254#ifdef PNG_FLOATING_POINT_SUPPORTED
1255typedef double FAR * FAR * png_doublepp;
1256#endif
1257
1258/* Pointers to pointers to pointers; i.e., pointer to array */
1259typedef char FAR * FAR * FAR * png_charppp;
1260
1261#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1262/* SPC - Is this stuff deprecated? */
1263/* It'll be removed as of libpng-1.4.0 - GR-P */
1264/* libpng typedefs for types in zlib. If zlib changes
1265 * or another compression library is used, then change these.
1266 * Eliminates need to change all the source files.
1267 */
1268typedef charf * png_zcharp;
1269typedef charf * FAR * png_zcharpp;
1270typedef z_stream FAR * png_zstreamp;
1271#endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1272
1273/*
1274 * Define PNG_BUILD_DLL if the module being built is a Windows
1275 * LIBPNG DLL.
1276 *
1277 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1278 * It is equivalent to Microsoft predefined macro _DLL that is
1279 * automatically defined when you compile using the share
1280 * version of the CRT (C Run-Time library)
1281 *
1282 * The cygwin mods make this behavior a little different:
1283 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1284 * Define PNG_STATIC if you are building a static library for use with cygwin,
1285 * -or- if you are building an application that you want to link to the
1286 * static library.
1287 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1288 * the other flags is defined.
1289 */
1290
1291#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1292# define PNG_DLL
1293#endif
1294/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1295 * When building a static lib, default to no GLOBAL ARRAYS, but allow
1296 * command-line override
1297 */
1298#if defined(__CYGWIN__)
1299# if !defined(PNG_STATIC)
1300# if defined(PNG_USE_GLOBAL_ARRAYS)
1301# undef PNG_USE_GLOBAL_ARRAYS
1302# endif
1303# if !defined(PNG_USE_LOCAL_ARRAYS)
1304# define PNG_USE_LOCAL_ARRAYS
1305# endif
1306# else
1307# if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
1308# if defined(PNG_USE_GLOBAL_ARRAYS)
1309# undef PNG_USE_GLOBAL_ARRAYS
1310# endif
1311# endif
1312# endif
1313# if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1314# define PNG_USE_LOCAL_ARRAYS
1315# endif
1316#endif
1317
1318/* Do not use global arrays (helps with building DLL's)
1319 * They are no longer used in libpng itself, since version 1.0.5c,
1320 * but might be required for some pre-1.0.5c applications.
1321 */
1322#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1323# if defined(PNG_NO_GLOBAL_ARRAYS) || \
1324 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
1325# define PNG_USE_LOCAL_ARRAYS
1326# else
1327# define PNG_USE_GLOBAL_ARRAYS
1328# endif
1329#endif
1330
1331#if defined(__CYGWIN__)
1332# undef PNGAPI
1333# define PNGAPI __cdecl
1334# undef PNG_IMPEXP
1335# define PNG_IMPEXP
1336#endif
1337
1338/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1339 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1340 * Don't ignore those warnings; you must also reset the default calling
1341 * convention in your compiler to match your PNGAPI, and you must build
1342 * zlib and your applications the same way you build libpng.
1343 */
1344
1345#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1346# ifndef PNG_NO_MODULEDEF
1347# define PNG_NO_MODULEDEF
1348# endif
1349#endif
1350
1351#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1352# define PNG_IMPEXP
1353#endif
1354
1355#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1356 (( defined(_Windows) || defined(_WINDOWS) || \
1357 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1358
1359# ifndef PNGAPI
1360# if (defined(__GNUC__) && defined(__arm__)) || defined (__ARMCC__)
1361# define PNGAPI
1362# elif defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) || defined(__WINSCW__)
1363# define PNGAPI __cdecl
1364# else
1365# define PNGAPI _cdecl
1366# endif
1367# endif
1368
1369# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1370 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1371# define PNG_IMPEXP
1372# endif
1373
1374# if !defined(PNG_IMPEXP)
1375
1376# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1377# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1378
1379 /* Borland/Microsoft */
1380# if defined(_MSC_VER) || defined(__BORLANDC__)
1381# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1382# define PNG_EXPORT PNG_EXPORT_TYPE1
1383# else
1384# define PNG_EXPORT PNG_EXPORT_TYPE2
1385# if defined(PNG_BUILD_DLL)
1386# define PNG_IMPEXP __export
1387# else
1388# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
1389 VC++ */
1390# endif /* Exists in Borland C++ for
1391 C++ classes (== huge) */
1392# endif
1393# endif
1394
1395# if !defined(PNG_IMPEXP)
1396# if defined(PNG_BUILD_DLL)
1397# define PNG_IMPEXP __declspec(dllexport)
1398# else
1399# define PNG_IMPEXP __declspec(dllimport)
1400# endif
1401# endif
1402# endif /* PNG_IMPEXP */
1403#else /* !(DLL || non-cygwin WINDOWS) */
1404# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1405# ifndef PNGAPI
1406# define PNGAPI _System
1407# endif
1408# else
1409# if 0 /* ... other platforms, with other meanings */
1410# endif
1411# endif
1412
1413# if !defined(PNG_IMPEXP)
1414# include <qconfig.h>
1415# if defined(QT_VISIBILITY_AVAILABLE)
1416# define PNG_IMPEXP __attribute__((visibility("default")))
1417# endif
1418# endif
1419
1420#endif
1421
1422#ifndef PNGAPI
1423# define PNGAPI
1424#endif
1425#ifndef PNG_IMPEXP
1426# define PNG_IMPEXP
1427#endif
1428
1429#ifdef PNG_BUILDSYMS
1430# ifndef PNG_EXPORT
1431# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1432# endif
1433# ifdef PNG_USE_GLOBAL_ARRAYS
1434# ifndef PNG_EXPORT_VAR
1435# define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1436# endif
1437# endif
1438#endif
1439
1440#ifndef PNG_EXPORT
1441# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1442#endif
1443
1444#ifdef PNG_USE_GLOBAL_ARRAYS
1445# ifndef PNG_EXPORT_VAR
1446# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1447# endif
1448#endif
1449
1450/* User may want to use these so they are not in PNG_INTERNAL. Any library
1451 * functions that are passed far data must be model independent.
1452 */
1453
1454#ifndef PNG_ABORT
1455# define PNG_ABORT() abort()
1456#endif
1457
1458#ifdef PNG_SETJMP_SUPPORTED
1459# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1460#else
1461# define png_jmpbuf(png_ptr) \
1462 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1463#endif
1464
1465#if defined(USE_FAR_KEYWORD) /* memory model independent fns */
1466/* use this to make far-to-near assignments */
1467# define CHECK 1
1468# define NOCHECK 0
1469# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1470# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1471# define png_snprintf _fsnprintf /* Added to v 1.2.19 */
1472# define png_strlen _fstrlen
1473# define png_memcmp _fmemcmp /* SJT: added */
1474# define png_memcpy _fmemcpy
1475# define png_memset _fmemset
1476#else /* use the usual functions */
1477# define CVT_PTR(ptr) (ptr)
1478# define CVT_PTR_NOCHECK(ptr) (ptr)
1479# ifndef PNG_NO_SNPRINTF
1480# ifdef _MSC_VER
1481# define png_snprintf _snprintf /* Added to v 1.2.19 */
1482# define png_snprintf2 _snprintf
1483# define png_snprintf6 _snprintf
1484# else
1485# define png_snprintf snprintf /* Added to v 1.2.19 */
1486# define png_snprintf2 snprintf
1487# define png_snprintf6 snprintf
1488# endif
1489# else
1490 /* You don't have or don't want to use snprintf(). Caution: Using
1491 * sprintf instead of snprintf exposes your application to accidental
1492 * or malevolent buffer overflows. If you don't have snprintf()
1493 * as a general rule you should provide one (you can get one from
1494 * Portable OpenSSH). */
1495# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1496# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1497# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1498 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1499# endif
1500# define png_strlen strlen
1501# define png_memcmp memcmp /* SJT: added */
1502# define png_memcpy memcpy
1503# define png_memset memset
1504#endif
1505/* End of memory model independent support */
1506
1507/* Just a little check that someone hasn't tried to define something
1508 * contradictory.
1509 */
1510#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1511# undef PNG_ZBUF_SIZE
1512# define PNG_ZBUF_SIZE 65536L
1513#endif
1514
1515/* Added at libpng-1.2.8 */
1516#endif /* PNG_VERSION_INFO_ONLY */
1517
1518#endif /* PNGCONF_H */
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