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source: vbox/trunk/src/libs/libpng-1.2.54/pngconf.h@ 67439

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1
2/* pngconf.h - machine configurable file for libpng
3 *
4 * libpng version 1.2.54, November 12, 2015
5 *
6 * Copyright (c) 1998-2015 Glenn Randers-Pehrson
7 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
8 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
9 *
10 * This code is released under the libpng license.
11 * For conditions of distribution and use, see the disclaimer
12 * and license in png.h
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/* Added at libpng-1.2.51 (ported from 1.4.6) */
90#ifndef PNG_UNUSED
91/* Unused formal parameter warnings are silenced using the following macro
92 * which is expected to have no bad effects on performance (optimizing
93 * compilers will probably remove it entirely). Note that if you replace
94 * it with something other than whitespace, you must include the terminating
95 * semicolon.
96 */
97# define PNG_UNUSED(param) (void)param;
98#endif
99/* End of material added to libpng-1.4.6 */
100
101/* This is the size of the compression buffer, and thus the size of
102 * an IDAT chunk. Make this whatever size you feel is best for your
103 * machine. One of these will be allocated per png_struct. When this
104 * is full, it writes the data to the disk, and does some other
105 * calculations. Making this an extremely small size will slow
106 * the library down, but you may want to experiment to determine
107 * where it becomes significant, if you are concerned with memory
108 * usage. Note that zlib allocates at least 32Kb also. For readers,
109 * this describes the size of the buffer available to read the data in.
110 * Unless this gets smaller than the size of a row (compressed),
111 * it should not make much difference how big this is.
112 */
113
114#ifndef PNG_ZBUF_SIZE
115# define PNG_ZBUF_SIZE 8192
116#endif
117
118/* Enable if you want a write-only libpng */
119
120#ifndef PNG_NO_READ_SUPPORTED
121# define PNG_READ_SUPPORTED
122#endif
123
124/* Enable if you want a read-only libpng */
125
126#ifndef PNG_NO_WRITE_SUPPORTED
127# define PNG_WRITE_SUPPORTED
128#endif
129
130/* Enabled in 1.2.41. */
131#ifdef PNG_ALLOW_BENIGN_ERRORS
132# define png_benign_error png_warning
133# define png_chunk_benign_error png_chunk_warning
134#else
135# ifndef PNG_BENIGN_ERRORS_SUPPORTED
136# define png_benign_error png_error
137# define png_chunk_benign_error png_chunk_error
138# endif
139#endif
140
141/* Added in libpng-1.2.41 */
142#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
143# define PNG_WARNINGS_SUPPORTED
144#endif
145
146#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
147# define PNG_ERROR_TEXT_SUPPORTED
148#endif
149
150#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
151# define PNG_CHECK_cHRM_SUPPORTED
152#endif
153
154/* Enabled by default in 1.2.0. You can disable this if you don't need to
155 * support PNGs that are embedded in MNG datastreams
156 */
157#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
158# ifndef PNG_MNG_FEATURES_SUPPORTED
159# define PNG_MNG_FEATURES_SUPPORTED
160# endif
161#endif
162
163#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
164# ifndef PNG_FLOATING_POINT_SUPPORTED
165# define PNG_FLOATING_POINT_SUPPORTED
166# endif
167#endif
168
169/* If you are running on a machine where you cannot allocate more
170 * than 64K of memory at once, uncomment this. While libpng will not
171 * normally need that much memory in a chunk (unless you load up a very
172 * large file), zlib needs to know how big of a chunk it can use, and
173 * libpng thus makes sure to check any memory allocation to verify it
174 * will fit into memory.
175#define PNG_MAX_MALLOC_64K
176 */
177#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
178# define PNG_MAX_MALLOC_64K
179#endif
180
181/* Special munging to support doing things the 'cygwin' way:
182 * 'Normal' png-on-win32 defines/defaults:
183 * PNG_BUILD_DLL -- building dll
184 * PNG_USE_DLL -- building an application, linking to dll
185 * (no define) -- building static library, or building an
186 * application and linking to the static lib
187 * 'Cygwin' defines/defaults:
188 * PNG_BUILD_DLL -- (ignored) building the dll
189 * (no define) -- (ignored) building an application, linking to the dll
190 * PNG_STATIC -- (ignored) building the static lib, or building an
191 * application that links to the static lib.
192 * ALL_STATIC -- (ignored) building various static libs, or building an
193 * application that links to the static libs.
194 * Thus,
195 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
196 * this bit of #ifdefs will define the 'correct' config variables based on
197 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
198 * unnecessary.
199 *
200 * Also, the precedence order is:
201 * ALL_STATIC (since we can't #undef something outside our namespace)
202 * PNG_BUILD_DLL
203 * PNG_STATIC
204 * (nothing) == PNG_USE_DLL
205 *
206 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
207 * of auto-import in binutils, we no longer need to worry about
208 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
209 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
210 * to __declspec() stuff. However, we DO need to worry about
211 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
212 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
213 */
214#ifdef __CYGWIN__
215# ifdef ALL_STATIC
216# ifdef PNG_BUILD_DLL
217# undef PNG_BUILD_DLL
218# endif
219# ifdef PNG_USE_DLL
220# undef PNG_USE_DLL
221# endif
222# ifdef PNG_DLL
223# undef PNG_DLL
224# endif
225# ifndef PNG_STATIC
226# define PNG_STATIC
227# endif
228# else
229# ifdef PNG_BUILD_DLL
230# ifdef PNG_STATIC
231# undef PNG_STATIC
232# endif
233# ifdef PNG_USE_DLL
234# undef PNG_USE_DLL
235# endif
236# ifndef PNG_DLL
237# define PNG_DLL
238# endif
239# else
240# ifdef PNG_STATIC
241# ifdef PNG_USE_DLL
242# undef PNG_USE_DLL
243# endif
244# ifdef PNG_DLL
245# undef PNG_DLL
246# endif
247# else
248# ifndef PNG_USE_DLL
249# define PNG_USE_DLL
250# endif
251# ifndef PNG_DLL
252# define PNG_DLL
253# endif
254# endif
255# endif
256# endif
257#endif
258
259/* This protects us against compilers that run on a windowing system
260 * and thus don't have or would rather us not use the stdio types:
261 * stdin, stdout, and stderr. The only one currently used is stderr
262 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
263 * prevent these from being compiled and used. #defining PNG_NO_STDIO
264 * will also prevent these, plus will prevent the entire set of stdio
265 * macros and functions (FILE *, printf, etc.) from being compiled and used,
266 * unless (PNG_DEBUG > 0) has been #defined.
267 *
268 * #define PNG_NO_CONSOLE_IO
269 * #define PNG_NO_STDIO
270 */
271
272#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
273# define PNG_STDIO_SUPPORTED
274#endif
275
276#ifdef _WIN32_WCE
277# include <windows.h>
278 /* Console I/O functions are not supported on WindowsCE */
279# define PNG_NO_CONSOLE_IO
280 /* abort() may not be supported on some/all Windows CE platforms */
281# define PNG_ABORT() exit(-1)
282# ifdef PNG_DEBUG
283# undef PNG_DEBUG
284# endif
285#endif
286
287#ifdef PNG_BUILD_DLL
288# ifndef PNG_CONSOLE_IO_SUPPORTED
289# ifndef PNG_NO_CONSOLE_IO
290# define PNG_NO_CONSOLE_IO
291# endif
292# endif
293#endif
294
295# ifdef PNG_NO_STDIO
296# ifndef PNG_NO_CONSOLE_IO
297# define PNG_NO_CONSOLE_IO
298# endif
299# ifdef PNG_DEBUG
300# if (PNG_DEBUG > 0)
301# include <stdio.h>
302# endif
303# endif
304# else
305# ifndef _WIN32_WCE
306/* "stdio.h" functions are not supported on WindowsCE */
307# include <stdio.h>
308# endif
309# endif
310
311#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
312# define PNG_CONSOLE_IO_SUPPORTED
313#endif
314
315/* This macro protects us against machines that don't have function
316 * prototypes (ie K&R style headers). If your compiler does not handle
317 * function prototypes, define this macro and use the included ansi2knr.
318 * I've always been able to use _NO_PROTO as the indicator, but you may
319 * need to drag the empty declaration out in front of here, or change the
320 * ifdef to suit your own needs.
321 */
322#ifndef PNGARG
323
324#ifdef OF /* zlib prototype munger */
325# define PNGARG(arglist) OF(arglist)
326#else
327
328#ifdef _NO_PROTO
329# define PNGARG(arglist) ()
330# ifndef PNG_TYPECAST_NULL
331# define PNG_TYPECAST_NULL
332# endif
333#else
334# define PNGARG(arglist) arglist
335#endif /* _NO_PROTO */
336
337
338#endif /* OF */
339
340#endif /* PNGARG */
341
342/* Try to determine if we are compiling on a Mac. Note that testing for
343 * just __MWERKS__ is not good enough, because the Codewarrior is now used
344 * on non-Mac platforms.
345 */
346#ifndef MACOS
347# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
348 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
349# define MACOS
350# endif
351#endif
352
353/* enough people need this for various reasons to include it here */
354#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
355# include <sys/types.h>
356#endif
357
358#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
359# define PNG_SETJMP_SUPPORTED
360#endif
361
362#ifdef PNG_SETJMP_SUPPORTED
363/* This is an attempt to force a single setjmp behaviour on Linux. If
364 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
365 *
366 * You can bypass this test if you know that your application uses exactly
367 * the same setjmp.h that was included when libpng was built. Only define
368 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
369 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
370 * while building a separate libpng library for general use.
371 */
372
373# ifndef PNG_SKIP_SETJMP_CHECK
374# ifdef __linux__
375# ifdef _BSD_SOURCE
376# define PNG_SAVE_BSD_SOURCE
377# undef _BSD_SOURCE
378# endif
379# ifdef _SETJMP_H
380 /* If you encounter a compiler error here, see the explanation
381 * near the end of INSTALL.
382 */
383 __pngconf.h__ in libpng already includes setjmp.h;
384 __dont__ include it again.;
385# endif
386# endif /* __linux__ */
387# endif /* PNG_SKIP_SETJMP_CHECK */
388
389 /* include setjmp.h for error handling */
390# include <setjmp.h>
391
392# ifdef __linux__
393# ifdef PNG_SAVE_BSD_SOURCE
394# ifndef _BSD_SOURCE
395# define _BSD_SOURCE
396# endif
397# undef PNG_SAVE_BSD_SOURCE
398# endif
399# endif /* __linux__ */
400#endif /* PNG_SETJMP_SUPPORTED */
401
402#ifdef BSD
403# include <strings.h>
404#else
405# include <string.h>
406#endif
407
408/* Other defines for things like memory and the like can go here. */
409#ifdef PNG_INTERNAL
410
411#include <stdlib.h>
412
413/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
414 * aren't usually used outside the library (as far as I know), so it is
415 * debatable if they should be exported at all. In the future, when it is
416 * possible to have run-time registry of chunk-handling functions, some of
417 * these will be made available again.
418#define PNG_EXTERN extern
419 */
420#define PNG_EXTERN
421
422/* Other defines specific to compilers can go here. Try to keep
423 * them inside an appropriate ifdef/endif pair for portability.
424 */
425
426#ifdef PNG_FLOATING_POINT_SUPPORTED
427# ifdef MACOS
428 /* We need to check that <math.h> hasn't already been included earlier
429 * as it seems it doesn't agree with <fp.h>, yet we should really use
430 * <fp.h> if possible.
431 */
432# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
433# include <fp.h>
434# endif
435# else
436# include <math.h>
437# endif
438# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
439 /* Amiga SAS/C: We must include builtin FPU functions when compiling using
440 * MATH=68881
441 */
442# include <m68881.h>
443# endif
444#endif
445
446/* Codewarrior on NT has linking problems without this. */
447#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
448# define PNG_ALWAYS_EXTERN
449#endif
450
451/* This provides the non-ANSI (far) memory allocation routines. */
452#if defined(__TURBOC__) && defined(__MSDOS__)
453# include <mem.h>
454# include <alloc.h>
455#endif
456
457/* I have no idea why is this necessary... */
458#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
459 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
460# include <malloc.h>
461#endif
462
463/* This controls how fine the dithering gets. As this allocates
464 * a largish chunk of memory (32K), those who are not as concerned
465 * with dithering quality can decrease some or all of these.
466 */
467#ifndef PNG_DITHER_RED_BITS
468# define PNG_DITHER_RED_BITS 5
469#endif
470#ifndef PNG_DITHER_GREEN_BITS
471# define PNG_DITHER_GREEN_BITS 5
472#endif
473#ifndef PNG_DITHER_BLUE_BITS
474# define PNG_DITHER_BLUE_BITS 5
475#endif
476
477/* This controls how fine the gamma correction becomes when you
478 * are only interested in 8 bits anyway. Increasing this value
479 * results in more memory being used, and more pow() functions
480 * being called to fill in the gamma tables. Don't set this value
481 * less then 8, and even that may not work (I haven't tested it).
482 */
483
484#ifndef PNG_MAX_GAMMA_8
485# define PNG_MAX_GAMMA_8 11
486#endif
487
488/* This controls how much a difference in gamma we can tolerate before
489 * we actually start doing gamma conversion.
490 */
491#ifndef PNG_GAMMA_THRESHOLD
492# define PNG_GAMMA_THRESHOLD 0.05
493#endif
494
495#endif /* PNG_INTERNAL */
496
497/* The following uses const char * instead of char * for error
498 * and warning message functions, so some compilers won't complain.
499 * If you do not want to use const, define PNG_NO_CONST here.
500 */
501
502#ifndef PNG_NO_CONST
503# define PNG_CONST const
504#else
505# define PNG_CONST
506#endif
507
508/* The following defines give you the ability to remove code from the
509 * library that you will not be using. I wish I could figure out how to
510 * automate this, but I can't do that without making it seriously hard
511 * on the users. So if you are not using an ability, change the #define
512 * to and #undef, and that part of the library will not be compiled. If
513 * your linker can't find a function, you may want to make sure the
514 * ability is defined here. Some of these depend upon some others being
515 * defined. I haven't figured out all the interactions here, so you may
516 * have to experiment awhile to get everything to compile. If you are
517 * creating or using a shared library, you probably shouldn't touch this,
518 * as it will affect the size of the structures, and this will cause bad
519 * things to happen if the library and/or application ever change.
520 */
521
522/* Any features you will not be using can be undef'ed here */
523
524/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
525 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
526 * on the compile line, then pick and choose which ones to define without
527 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
528 * if you only want to have a png-compliant reader/writer but don't need
529 * any of the extra transformations. This saves about 80 kbytes in a
530 * typical installation of the library. (PNG_NO_* form added in version
531 * 1.0.1c, for consistency)
532 */
533
534/* The size of the png_text structure changed in libpng-1.0.6 when
535 * iTXt support was added. iTXt support was turned off by default through
536 * libpng-1.2.x, to support old apps that malloc the png_text structure
537 * instead of calling png_set_text() and letting libpng malloc it. It
538 * will be turned on by default in libpng-1.4.0.
539 */
540
541#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
542# ifndef PNG_NO_iTXt_SUPPORTED
543# define PNG_NO_iTXt_SUPPORTED
544# endif
545# ifndef PNG_NO_READ_iTXt
546# define PNG_NO_READ_iTXt
547# endif
548# ifndef PNG_NO_WRITE_iTXt
549# define PNG_NO_WRITE_iTXt
550# endif
551#endif
552
553#if !defined(PNG_NO_iTXt_SUPPORTED)
554# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
555# define PNG_READ_iTXt
556# endif
557# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
558# define PNG_WRITE_iTXt
559# endif
560#endif
561
562/* The following support, added after version 1.0.0, can be turned off here en
563 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
564 * with old applications that require the length of png_struct and png_info
565 * to remain unchanged.
566 */
567
568#ifdef PNG_LEGACY_SUPPORTED
569# define PNG_NO_FREE_ME
570# define PNG_NO_READ_UNKNOWN_CHUNKS
571# define PNG_NO_WRITE_UNKNOWN_CHUNKS
572# define PNG_NO_HANDLE_AS_UNKNOWN
573# define PNG_NO_READ_USER_CHUNKS
574# define PNG_NO_READ_iCCP
575# define PNG_NO_WRITE_iCCP
576# define PNG_NO_READ_iTXt
577# define PNG_NO_WRITE_iTXt
578# define PNG_NO_READ_sCAL
579# define PNG_NO_WRITE_sCAL
580# define PNG_NO_READ_sPLT
581# define PNG_NO_WRITE_sPLT
582# define PNG_NO_INFO_IMAGE
583# define PNG_NO_READ_RGB_TO_GRAY
584# define PNG_NO_READ_USER_TRANSFORM
585# define PNG_NO_WRITE_USER_TRANSFORM
586# define PNG_NO_USER_MEM
587# define PNG_NO_READ_EMPTY_PLTE
588# define PNG_NO_MNG_FEATURES
589# define PNG_NO_FIXED_POINT_SUPPORTED
590#endif
591
592/* Ignore attempt to turn off both floating and fixed point support */
593#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
594 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
595# define PNG_FIXED_POINT_SUPPORTED
596#endif
597
598#ifndef PNG_NO_FREE_ME
599# define PNG_FREE_ME_SUPPORTED
600#endif
601
602#ifdef PNG_READ_SUPPORTED
603
604#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
605 !defined(PNG_NO_READ_TRANSFORMS)
606# define PNG_READ_TRANSFORMS_SUPPORTED
607#endif
608
609#ifdef PNG_READ_TRANSFORMS_SUPPORTED
610# ifndef PNG_NO_READ_EXPAND
611# define PNG_READ_EXPAND_SUPPORTED
612# endif
613# ifndef PNG_NO_READ_SHIFT
614# define PNG_READ_SHIFT_SUPPORTED
615# endif
616# ifndef PNG_NO_READ_PACK
617# define PNG_READ_PACK_SUPPORTED
618# endif
619# ifndef PNG_NO_READ_BGR
620# define PNG_READ_BGR_SUPPORTED
621# endif
622# ifndef PNG_NO_READ_SWAP
623# define PNG_READ_SWAP_SUPPORTED
624# endif
625# ifndef PNG_NO_READ_PACKSWAP
626# define PNG_READ_PACKSWAP_SUPPORTED
627# endif
628# ifndef PNG_NO_READ_INVERT
629# define PNG_READ_INVERT_SUPPORTED
630# endif
631# ifndef PNG_NO_READ_DITHER
632# define PNG_READ_DITHER_SUPPORTED
633# endif
634# ifndef PNG_NO_READ_BACKGROUND
635# define PNG_READ_BACKGROUND_SUPPORTED
636# endif
637# ifndef PNG_NO_READ_16_TO_8
638# define PNG_READ_16_TO_8_SUPPORTED
639# endif
640# ifndef PNG_NO_READ_FILLER
641# define PNG_READ_FILLER_SUPPORTED
642# endif
643# ifndef PNG_NO_READ_GAMMA
644# define PNG_READ_GAMMA_SUPPORTED
645# endif
646# ifndef PNG_NO_READ_GRAY_TO_RGB
647# define PNG_READ_GRAY_TO_RGB_SUPPORTED
648# endif
649# ifndef PNG_NO_READ_SWAP_ALPHA
650# define PNG_READ_SWAP_ALPHA_SUPPORTED
651# endif
652# ifndef PNG_NO_READ_INVERT_ALPHA
653# define PNG_READ_INVERT_ALPHA_SUPPORTED
654# endif
655# ifndef PNG_NO_READ_STRIP_ALPHA
656# define PNG_READ_STRIP_ALPHA_SUPPORTED
657# endif
658# ifndef PNG_NO_READ_USER_TRANSFORM
659# define PNG_READ_USER_TRANSFORM_SUPPORTED
660# endif
661# ifndef PNG_NO_READ_RGB_TO_GRAY
662# define PNG_READ_RGB_TO_GRAY_SUPPORTED
663# endif
664#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
665
666/* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
667#if !defined(PNG_NO_PROGRESSIVE_READ) && \
668 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
669# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
670#endif /* about interlacing capability! You'll */
671 /* still have interlacing unless you change the following define: */
672#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
673
674/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
675#if !defined(PNG_NO_SEQUENTIAL_READ) && \
676 !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
677 !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
678# define PNG_SEQUENTIAL_READ_SUPPORTED
679#endif
680
681#define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
682
683#ifndef PNG_NO_READ_COMPOSITE_NODIV
684# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
685# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
686# endif
687#endif
688
689#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
690/* Deprecated, will be removed from version 2.0.0.
691 Use PNG_MNG_FEATURES_SUPPORTED instead. */
692#ifndef PNG_NO_READ_EMPTY_PLTE
693# define PNG_READ_EMPTY_PLTE_SUPPORTED
694#endif
695#endif
696
697#endif /* PNG_READ_SUPPORTED */
698
699#ifdef PNG_WRITE_SUPPORTED
700
701# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
702 !defined(PNG_NO_WRITE_TRANSFORMS)
703# define PNG_WRITE_TRANSFORMS_SUPPORTED
704#endif
705
706#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
707# ifndef PNG_NO_WRITE_SHIFT
708# define PNG_WRITE_SHIFT_SUPPORTED
709# endif
710# ifndef PNG_NO_WRITE_PACK
711# define PNG_WRITE_PACK_SUPPORTED
712# endif
713# ifndef PNG_NO_WRITE_BGR
714# define PNG_WRITE_BGR_SUPPORTED
715# endif
716# ifndef PNG_NO_WRITE_SWAP
717# define PNG_WRITE_SWAP_SUPPORTED
718# endif
719# ifndef PNG_NO_WRITE_PACKSWAP
720# define PNG_WRITE_PACKSWAP_SUPPORTED
721# endif
722# ifndef PNG_NO_WRITE_INVERT
723# define PNG_WRITE_INVERT_SUPPORTED
724# endif
725# ifndef PNG_NO_WRITE_FILLER
726# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
727# endif
728# ifndef PNG_NO_WRITE_SWAP_ALPHA
729# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
730# endif
731#ifndef PNG_1_0_X
732# ifndef PNG_NO_WRITE_INVERT_ALPHA
733# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
734# endif
735#endif
736# ifndef PNG_NO_WRITE_USER_TRANSFORM
737# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
738# endif
739#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
740
741#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
742 !defined(PNG_WRITE_INTERLACING_SUPPORTED)
743#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
744 encoders, but can cause trouble
745 if left undefined */
746#endif
747
748#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
749 !defined(PNG_WRITE_WEIGHTED_FILTER) && \
750 defined(PNG_FLOATING_POINT_SUPPORTED)
751# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
752#endif
753
754#ifndef PNG_NO_WRITE_FLUSH
755# define PNG_WRITE_FLUSH_SUPPORTED
756#endif
757
758#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
759/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
760#ifndef PNG_NO_WRITE_EMPTY_PLTE
761# define PNG_WRITE_EMPTY_PLTE_SUPPORTED
762#endif
763#endif
764
765#endif /* PNG_WRITE_SUPPORTED */
766
767#ifndef PNG_1_0_X
768# ifndef PNG_NO_ERROR_NUMBERS
769# define PNG_ERROR_NUMBERS_SUPPORTED
770# endif
771#endif /* PNG_1_0_X */
772
773#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
774 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
775# ifndef PNG_NO_USER_TRANSFORM_PTR
776# define PNG_USER_TRANSFORM_PTR_SUPPORTED
777# endif
778#endif
779
780#ifndef PNG_NO_STDIO
781# define PNG_TIME_RFC1123_SUPPORTED
782#endif
783
784/* This adds extra functions in pngget.c for accessing data from the
785 * info pointer (added in version 0.99)
786 * png_get_image_width()
787 * png_get_image_height()
788 * png_get_bit_depth()
789 * png_get_color_type()
790 * png_get_compression_type()
791 * png_get_filter_type()
792 * png_get_interlace_type()
793 * png_get_pixel_aspect_ratio()
794 * png_get_pixels_per_meter()
795 * png_get_x_offset_pixels()
796 * png_get_y_offset_pixels()
797 * png_get_x_offset_microns()
798 * png_get_y_offset_microns()
799 */
800#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
801# define PNG_EASY_ACCESS_SUPPORTED
802#endif
803
804/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
805 * and removed from version 1.2.20. The following will be removed
806 * from libpng-1.4.0
807*/
808
809#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
810# ifndef PNG_OPTIMIZED_CODE_SUPPORTED
811# define PNG_OPTIMIZED_CODE_SUPPORTED
812# endif
813#endif
814
815#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
816# ifndef PNG_ASSEMBLER_CODE_SUPPORTED
817# define PNG_ASSEMBLER_CODE_SUPPORTED
818# endif
819
820# if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
821 /* work around 64-bit gcc compiler bugs in gcc-3.x */
822# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
823# define PNG_NO_MMX_CODE
824# endif
825# endif
826
827# ifdef __APPLE__
828# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
829# define PNG_NO_MMX_CODE
830# endif
831# endif
832
833# if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
834# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
835# define PNG_NO_MMX_CODE
836# endif
837# endif
838
839# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
840# define PNG_MMX_CODE_SUPPORTED
841# endif
842
843#endif
844/* end of obsolete code to be removed from libpng-1.4.0 */
845
846/* Added at libpng-1.2.0 */
847#ifndef PNG_1_0_X
848#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
849# define PNG_USER_MEM_SUPPORTED
850#endif
851#endif /* PNG_1_0_X */
852
853/* Added at libpng-1.2.6 */
854#ifndef PNG_1_0_X
855# ifndef PNG_SET_USER_LIMITS_SUPPORTED
856# ifndef PNG_NO_SET_USER_LIMITS
857# define PNG_SET_USER_LIMITS_SUPPORTED
858# endif
859# endif
860#endif /* PNG_1_0_X */
861
862/* Added at libpng-1.0.53 and 1.2.43 */
863#ifndef PNG_USER_LIMITS_SUPPORTED
864# ifndef PNG_NO_USER_LIMITS
865# define PNG_USER_LIMITS_SUPPORTED
866# endif
867#endif
868
869/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
870 * how large, set these limits to 0x7fffffffL
871 */
872#ifndef PNG_USER_WIDTH_MAX
873# define PNG_USER_WIDTH_MAX 1000000L
874#endif
875#ifndef PNG_USER_HEIGHT_MAX
876# define PNG_USER_HEIGHT_MAX 1000000L
877#endif
878
879/* Added at libpng-1.2.43. To accept all valid PNGs no matter
880 * how large, set these two limits to 0.
881 */
882#ifndef PNG_USER_CHUNK_CACHE_MAX
883# define PNG_USER_CHUNK_CACHE_MAX 32765
884#endif
885
886/* Added at libpng-1.2.43 */
887#ifndef PNG_USER_CHUNK_MALLOC_MAX
888# define PNG_USER_CHUNK_MALLOC_MAX 8000000
889#endif
890
891#ifndef PNG_LITERAL_SHARP
892# define PNG_LITERAL_SHARP 0x23
893#endif
894#ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
895# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
896#endif
897#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
898# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
899#endif
900
901/* Added at libpng-1.2.34 */
902#ifndef PNG_STRING_NEWLINE
903#define PNG_STRING_NEWLINE "\n"
904#endif
905
906/* These are currently experimental features, define them if you want */
907
908/* very little testing */
909/*
910#ifdef PNG_READ_SUPPORTED
911# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
912# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
913# endif
914#endif
915*/
916
917/* This is only for PowerPC big-endian and 680x0 systems */
918/* some testing */
919/*
920#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
921# define PNG_READ_BIG_ENDIAN_SUPPORTED
922#endif
923*/
924
925/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
926/*
927#define PNG_NO_POINTER_INDEXING
928*/
929
930#if !defined(PNG_NO_POINTER_INDEXING) && \
931 !defined(PNG_POINTER_INDEXING_SUPPORTED)
932# define PNG_POINTER_INDEXING_SUPPORTED
933#endif
934
935/* These functions are turned off by default, as they will be phased out. */
936/*
937#define PNG_USELESS_TESTS_SUPPORTED
938#define PNG_CORRECT_PALETTE_SUPPORTED
939*/
940
941/* Any chunks you are not interested in, you can undef here. The
942 * ones that allocate memory may be expecially important (hIST,
943 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
944 * a bit smaller.
945 */
946
947#if defined(PNG_READ_SUPPORTED) && \
948 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
949 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
950# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
951#endif
952
953#if defined(PNG_WRITE_SUPPORTED) && \
954 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
955 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
956# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
957#endif
958
959#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
960
961#ifdef PNG_NO_READ_TEXT
962# define PNG_NO_READ_iTXt
963# define PNG_NO_READ_tEXt
964# define PNG_NO_READ_zTXt
965#endif
966#ifndef PNG_NO_READ_bKGD
967# define PNG_READ_bKGD_SUPPORTED
968# define PNG_bKGD_SUPPORTED
969#endif
970#ifndef PNG_NO_READ_cHRM
971# define PNG_READ_cHRM_SUPPORTED
972# define PNG_cHRM_SUPPORTED
973#endif
974#ifndef PNG_NO_READ_gAMA
975# define PNG_READ_gAMA_SUPPORTED
976# define PNG_gAMA_SUPPORTED
977#endif
978#ifndef PNG_NO_READ_hIST
979# define PNG_READ_hIST_SUPPORTED
980# define PNG_hIST_SUPPORTED
981#endif
982#ifndef PNG_NO_READ_iCCP
983# define PNG_READ_iCCP_SUPPORTED
984# define PNG_iCCP_SUPPORTED
985#endif
986#ifndef PNG_NO_READ_iTXt
987# ifndef PNG_READ_iTXt_SUPPORTED
988# define PNG_READ_iTXt_SUPPORTED
989# endif
990# ifndef PNG_iTXt_SUPPORTED
991# define PNG_iTXt_SUPPORTED
992# endif
993#endif
994#ifndef PNG_NO_READ_oFFs
995# define PNG_READ_oFFs_SUPPORTED
996# define PNG_oFFs_SUPPORTED
997#endif
998#ifndef PNG_NO_READ_pCAL
999# define PNG_READ_pCAL_SUPPORTED
1000# define PNG_pCAL_SUPPORTED
1001#endif
1002#ifndef PNG_NO_READ_sCAL
1003# define PNG_READ_sCAL_SUPPORTED
1004# define PNG_sCAL_SUPPORTED
1005#endif
1006#ifndef PNG_NO_READ_pHYs
1007# define PNG_READ_pHYs_SUPPORTED
1008# define PNG_pHYs_SUPPORTED
1009#endif
1010#ifndef PNG_NO_READ_sBIT
1011# define PNG_READ_sBIT_SUPPORTED
1012# define PNG_sBIT_SUPPORTED
1013#endif
1014#ifndef PNG_NO_READ_sPLT
1015# define PNG_READ_sPLT_SUPPORTED
1016# define PNG_sPLT_SUPPORTED
1017#endif
1018#ifndef PNG_NO_READ_sRGB
1019# define PNG_READ_sRGB_SUPPORTED
1020# define PNG_sRGB_SUPPORTED
1021#endif
1022#ifndef PNG_NO_READ_tEXt
1023# define PNG_READ_tEXt_SUPPORTED
1024# define PNG_tEXt_SUPPORTED
1025#endif
1026#ifndef PNG_NO_READ_tIME
1027# define PNG_READ_tIME_SUPPORTED
1028# define PNG_tIME_SUPPORTED
1029#endif
1030#ifndef PNG_NO_READ_tRNS
1031# define PNG_READ_tRNS_SUPPORTED
1032# define PNG_tRNS_SUPPORTED
1033#endif
1034#ifndef PNG_NO_READ_zTXt
1035# define PNG_READ_zTXt_SUPPORTED
1036# define PNG_zTXt_SUPPORTED
1037#endif
1038#ifndef PNG_NO_READ_OPT_PLTE
1039# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
1040#endif /* optional PLTE chunk in RGB and RGBA images */
1041#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
1042 defined(PNG_READ_zTXt_SUPPORTED)
1043# define PNG_READ_TEXT_SUPPORTED
1044# define PNG_TEXT_SUPPORTED
1045#endif
1046
1047#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
1048
1049#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
1050# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
1051# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1052# define PNG_UNKNOWN_CHUNKS_SUPPORTED
1053# endif
1054#endif
1055#if !defined(PNG_NO_READ_USER_CHUNKS) && \
1056 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
1057# define PNG_READ_USER_CHUNKS_SUPPORTED
1058# define PNG_USER_CHUNKS_SUPPORTED
1059# ifdef PNG_NO_READ_UNKNOWN_CHUNKS
1060# undef PNG_NO_READ_UNKNOWN_CHUNKS
1061# endif
1062# ifdef PNG_NO_HANDLE_AS_UNKNOWN
1063# undef PNG_NO_HANDLE_AS_UNKNOWN
1064# endif
1065#endif
1066
1067#ifndef PNG_NO_HANDLE_AS_UNKNOWN
1068# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1069# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1070# endif
1071#endif
1072
1073#ifdef PNG_WRITE_SUPPORTED
1074#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
1075
1076#ifdef PNG_NO_WRITE_TEXT
1077# define PNG_NO_WRITE_iTXt
1078# define PNG_NO_WRITE_tEXt
1079# define PNG_NO_WRITE_zTXt
1080#endif
1081#ifndef PNG_NO_WRITE_bKGD
1082# define PNG_WRITE_bKGD_SUPPORTED
1083# ifndef PNG_bKGD_SUPPORTED
1084# define PNG_bKGD_SUPPORTED
1085# endif
1086#endif
1087#ifndef PNG_NO_WRITE_cHRM
1088# define PNG_WRITE_cHRM_SUPPORTED
1089# ifndef PNG_cHRM_SUPPORTED
1090# define PNG_cHRM_SUPPORTED
1091# endif
1092#endif
1093#ifndef PNG_NO_WRITE_gAMA
1094# define PNG_WRITE_gAMA_SUPPORTED
1095# ifndef PNG_gAMA_SUPPORTED
1096# define PNG_gAMA_SUPPORTED
1097# endif
1098#endif
1099#ifndef PNG_NO_WRITE_hIST
1100# define PNG_WRITE_hIST_SUPPORTED
1101# ifndef PNG_hIST_SUPPORTED
1102# define PNG_hIST_SUPPORTED
1103# endif
1104#endif
1105#ifndef PNG_NO_WRITE_iCCP
1106# define PNG_WRITE_iCCP_SUPPORTED
1107# ifndef PNG_iCCP_SUPPORTED
1108# define PNG_iCCP_SUPPORTED
1109# endif
1110#endif
1111#ifndef PNG_NO_WRITE_iTXt
1112# ifndef PNG_WRITE_iTXt_SUPPORTED
1113# define PNG_WRITE_iTXt_SUPPORTED
1114# endif
1115# ifndef PNG_iTXt_SUPPORTED
1116# define PNG_iTXt_SUPPORTED
1117# endif
1118#endif
1119#ifndef PNG_NO_WRITE_oFFs
1120# define PNG_WRITE_oFFs_SUPPORTED
1121# ifndef PNG_oFFs_SUPPORTED
1122# define PNG_oFFs_SUPPORTED
1123# endif
1124#endif
1125#ifndef PNG_NO_WRITE_pCAL
1126# define PNG_WRITE_pCAL_SUPPORTED
1127# ifndef PNG_pCAL_SUPPORTED
1128# define PNG_pCAL_SUPPORTED
1129# endif
1130#endif
1131#ifndef PNG_NO_WRITE_sCAL
1132# define PNG_WRITE_sCAL_SUPPORTED
1133# ifndef PNG_sCAL_SUPPORTED
1134# define PNG_sCAL_SUPPORTED
1135# endif
1136#endif
1137#ifndef PNG_NO_WRITE_pHYs
1138# define PNG_WRITE_pHYs_SUPPORTED
1139# ifndef PNG_pHYs_SUPPORTED
1140# define PNG_pHYs_SUPPORTED
1141# endif
1142#endif
1143#ifndef PNG_NO_WRITE_sBIT
1144# define PNG_WRITE_sBIT_SUPPORTED
1145# ifndef PNG_sBIT_SUPPORTED
1146# define PNG_sBIT_SUPPORTED
1147# endif
1148#endif
1149#ifndef PNG_NO_WRITE_sPLT
1150# define PNG_WRITE_sPLT_SUPPORTED
1151# ifndef PNG_sPLT_SUPPORTED
1152# define PNG_sPLT_SUPPORTED
1153# endif
1154#endif
1155#ifndef PNG_NO_WRITE_sRGB
1156# define PNG_WRITE_sRGB_SUPPORTED
1157# ifndef PNG_sRGB_SUPPORTED
1158# define PNG_sRGB_SUPPORTED
1159# endif
1160#endif
1161#ifndef PNG_NO_WRITE_tEXt
1162# define PNG_WRITE_tEXt_SUPPORTED
1163# ifndef PNG_tEXt_SUPPORTED
1164# define PNG_tEXt_SUPPORTED
1165# endif
1166#endif
1167#ifndef PNG_NO_WRITE_tIME
1168# define PNG_WRITE_tIME_SUPPORTED
1169# ifndef PNG_tIME_SUPPORTED
1170# define PNG_tIME_SUPPORTED
1171# endif
1172#endif
1173#ifndef PNG_NO_WRITE_tRNS
1174# define PNG_WRITE_tRNS_SUPPORTED
1175# ifndef PNG_tRNS_SUPPORTED
1176# define PNG_tRNS_SUPPORTED
1177# endif
1178#endif
1179#ifndef PNG_NO_WRITE_zTXt
1180# define PNG_WRITE_zTXt_SUPPORTED
1181# ifndef PNG_zTXt_SUPPORTED
1182# define PNG_zTXt_SUPPORTED
1183# endif
1184#endif
1185#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1186 defined(PNG_WRITE_zTXt_SUPPORTED)
1187# define PNG_WRITE_TEXT_SUPPORTED
1188# ifndef PNG_TEXT_SUPPORTED
1189# define PNG_TEXT_SUPPORTED
1190# endif
1191#endif
1192
1193#ifdef PNG_WRITE_tIME_SUPPORTED
1194# ifndef PNG_NO_CONVERT_tIME
1195# ifndef _WIN32_WCE
1196/* The "tm" structure is not supported on WindowsCE */
1197# ifndef PNG_CONVERT_tIME_SUPPORTED
1198# define PNG_CONVERT_tIME_SUPPORTED
1199# endif
1200# endif
1201# endif
1202#endif
1203
1204#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1205
1206#if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED)
1207# define PNG_WRITE_FILTER_SUPPORTED
1208#endif
1209
1210#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1211# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1212# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1213# define PNG_UNKNOWN_CHUNKS_SUPPORTED
1214# endif
1215#endif
1216
1217#ifndef PNG_NO_HANDLE_AS_UNKNOWN
1218# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1219# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1220# endif
1221#endif
1222#endif /* PNG_WRITE_SUPPORTED */
1223
1224/* Turn this off to disable png_read_png() and
1225 * png_write_png() and leave the row_pointers member
1226 * out of the info structure.
1227 */
1228#ifndef PNG_NO_INFO_IMAGE
1229# define PNG_INFO_IMAGE_SUPPORTED
1230#endif
1231
1232/* Need the time information for converting tIME chunks */
1233#ifdef PNG_CONVERT_tIME_SUPPORTED
1234 /* "time.h" functions are not supported on WindowsCE */
1235# include <time.h>
1236#endif
1237
1238/* Some typedefs to get us started. These should be safe on most of the
1239 * common platforms. The typedefs should be at least as large as the
1240 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1241 * don't have to be exactly that size. Some compilers dislike passing
1242 * unsigned shorts as function parameters, so you may be better off using
1243 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
1244 * want to have unsigned int for png_uint_32 instead of unsigned long.
1245 */
1246
1247typedef unsigned long png_uint_32;
1248typedef long png_int_32;
1249typedef unsigned short png_uint_16;
1250typedef short png_int_16;
1251typedef unsigned char png_byte;
1252
1253/* This is usually size_t. It is typedef'ed just in case you need it to
1254 change (I'm not sure if you will or not, so I thought I'd be safe) */
1255#ifdef PNG_SIZE_T
1256 typedef PNG_SIZE_T png_size_t;
1257# define png_sizeof(x) png_convert_size(sizeof(x))
1258#else
1259 typedef size_t png_size_t;
1260# define png_sizeof(x) sizeof(x)
1261#endif
1262
1263/* The following is needed for medium model support. It cannot be in the
1264 * PNG_INTERNAL section. Needs modification for other compilers besides
1265 * MSC. Model independent support declares all arrays and pointers to be
1266 * large using the far keyword. The zlib version used must also support
1267 * model independent data. As of version zlib 1.0.4, the necessary changes
1268 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1269 * changes that are needed. (Tim Wegner)
1270 */
1271
1272/* Separate compiler dependencies (problem here is that zlib.h always
1273 defines FAR. (SJT) */
1274#ifdef __BORLANDC__
1275# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1276# define LDATA 1
1277# else
1278# define LDATA 0
1279# endif
1280 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1281# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1282# define PNG_MAX_MALLOC_64K
1283# if (LDATA != 1)
1284# ifndef FAR
1285# define FAR __far
1286# endif
1287# define USE_FAR_KEYWORD
1288# endif /* LDATA != 1 */
1289 /* Possibly useful for moving data out of default segment.
1290 * Uncomment it if you want. Could also define FARDATA as
1291 * const if your compiler supports it. (SJT)
1292# define FARDATA FAR
1293 */
1294# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1295#endif /* __BORLANDC__ */
1296
1297
1298/* Suggest testing for specific compiler first before testing for
1299 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1300 * making reliance oncertain keywords suspect. (SJT)
1301 */
1302
1303/* MSC Medium model */
1304#ifdef FAR
1305# ifdef M_I86MM
1306# define USE_FAR_KEYWORD
1307# define FARDATA FAR
1308# include <dos.h>
1309# endif
1310#endif
1311
1312/* SJT: default case */
1313#ifndef FAR
1314# define FAR
1315#endif
1316
1317/* At this point FAR is always defined */
1318#ifndef FARDATA
1319# define FARDATA
1320#endif
1321
1322/* Typedef for floating-point numbers that are converted
1323 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1324typedef png_int_32 png_fixed_point;
1325
1326/* Add typedefs for pointers */
1327typedef void FAR * png_voidp;
1328typedef png_byte FAR * png_bytep;
1329typedef png_uint_32 FAR * png_uint_32p;
1330typedef png_int_32 FAR * png_int_32p;
1331typedef png_uint_16 FAR * png_uint_16p;
1332typedef png_int_16 FAR * png_int_16p;
1333typedef PNG_CONST char FAR * png_const_charp;
1334typedef char FAR * png_charp;
1335typedef png_fixed_point FAR * png_fixed_point_p;
1336
1337#ifndef PNG_NO_STDIO
1338#ifdef _WIN32_WCE
1339typedef HANDLE png_FILE_p;
1340#else
1341typedef FILE * png_FILE_p;
1342#endif
1343#endif
1344
1345#ifdef PNG_FLOATING_POINT_SUPPORTED
1346typedef double FAR * png_doublep;
1347#endif
1348
1349/* Pointers to pointers; i.e. arrays */
1350typedef png_byte FAR * FAR * png_bytepp;
1351typedef png_uint_32 FAR * FAR * png_uint_32pp;
1352typedef png_int_32 FAR * FAR * png_int_32pp;
1353typedef png_uint_16 FAR * FAR * png_uint_16pp;
1354typedef png_int_16 FAR * FAR * png_int_16pp;
1355typedef PNG_CONST char FAR * FAR * png_const_charpp;
1356typedef char FAR * FAR * png_charpp;
1357typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1358#ifdef PNG_FLOATING_POINT_SUPPORTED
1359typedef double FAR * FAR * png_doublepp;
1360#endif
1361
1362/* Pointers to pointers to pointers; i.e., pointer to array */
1363typedef char FAR * FAR * FAR * png_charppp;
1364
1365#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1366/* SPC - Is this stuff deprecated? */
1367/* It'll be removed as of libpng-1.4.0 - GR-P */
1368/* libpng typedefs for types in zlib. If zlib changes
1369 * or another compression library is used, then change these.
1370 * Eliminates need to change all the source files.
1371 */
1372typedef charf * png_zcharp;
1373typedef charf * FAR * png_zcharpp;
1374typedef z_stream FAR * png_zstreamp;
1375#endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1376
1377/*
1378 * Define PNG_BUILD_DLL if the module being built is a Windows
1379 * LIBPNG DLL.
1380 *
1381 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1382 * It is equivalent to Microsoft predefined macro _DLL that is
1383 * automatically defined when you compile using the share
1384 * version of the CRT (C Run-Time library)
1385 *
1386 * The cygwin mods make this behavior a little different:
1387 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1388 * Define PNG_STATIC if you are building a static library for use with cygwin,
1389 * -or- if you are building an application that you want to link to the
1390 * static library.
1391 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1392 * the other flags is defined.
1393 */
1394
1395#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1396# define PNG_DLL
1397#endif
1398/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1399 * When building a static lib, default to no GLOBAL ARRAYS, but allow
1400 * command-line override
1401 */
1402#ifdef __CYGWIN__
1403# ifndef PNG_STATIC
1404# ifdef PNG_USE_GLOBAL_ARRAYS
1405# undef PNG_USE_GLOBAL_ARRAYS
1406# endif
1407# ifndef PNG_USE_LOCAL_ARRAYS
1408# define PNG_USE_LOCAL_ARRAYS
1409# endif
1410# else
1411# if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
1412# ifdef PNG_USE_GLOBAL_ARRAYS
1413# undef PNG_USE_GLOBAL_ARRAYS
1414# endif
1415# endif
1416# endif
1417# if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1418# define PNG_USE_LOCAL_ARRAYS
1419# endif
1420#endif
1421
1422/* Do not use global arrays (helps with building DLL's)
1423 * They are no longer used in libpng itself, since version 1.0.5c,
1424 * but might be required for some pre-1.0.5c applications.
1425 */
1426#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1427# if defined(PNG_NO_GLOBAL_ARRAYS) || \
1428 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
1429# define PNG_USE_LOCAL_ARRAYS
1430# else
1431# define PNG_USE_GLOBAL_ARRAYS
1432# endif
1433#endif
1434
1435#ifdef __CYGWIN__
1436# undef PNGAPI
1437# define PNGAPI __cdecl
1438# undef PNG_IMPEXP
1439# define PNG_IMPEXP
1440#endif
1441
1442/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1443 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1444 * Don't ignore those warnings; you must also reset the default calling
1445 * convention in your compiler to match your PNGAPI, and you must build
1446 * zlib and your applications the same way you build libpng.
1447 */
1448
1449#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1450# ifndef PNG_NO_MODULEDEF
1451# define PNG_NO_MODULEDEF
1452# endif
1453#endif
1454
1455#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1456# define PNG_IMPEXP
1457#endif
1458
1459#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1460 (( defined(_Windows) || defined(_WINDOWS) || \
1461 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1462
1463# ifndef PNGAPI
1464# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1465# define PNGAPI __cdecl
1466# else
1467# define PNGAPI _cdecl
1468# endif
1469# endif
1470
1471# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1472 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1473# define PNG_IMPEXP
1474# endif
1475
1476# ifndef PNG_IMPEXP
1477
1478# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1479# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1480
1481 /* Borland/Microsoft */
1482# if defined(_MSC_VER) || defined(__BORLANDC__)
1483# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1484# define PNG_EXPORT PNG_EXPORT_TYPE1
1485# else
1486# define PNG_EXPORT PNG_EXPORT_TYPE2
1487# ifdef PNG_BUILD_DLL
1488# define PNG_IMPEXP __export
1489# else
1490# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
1491 VC++ */
1492# endif /* Exists in Borland C++ for
1493 C++ classes (== huge) */
1494# endif
1495# endif
1496
1497# ifndef PNG_IMPEXP
1498# ifdef PNG_BUILD_DLL
1499# define PNG_IMPEXP __declspec(dllexport)
1500# else
1501# define PNG_IMPEXP __declspec(dllimport)
1502# endif
1503# endif
1504# endif /* PNG_IMPEXP */
1505#else /* !(DLL || non-cygwin WINDOWS) */
1506# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1507# ifndef PNGAPI
1508# define PNGAPI _System
1509# endif
1510# else
1511# if 0 /* ... other platforms, with other meanings */
1512# endif
1513# endif
1514#endif
1515
1516#ifndef PNGAPI
1517# define PNGAPI
1518#endif
1519#ifndef PNG_IMPEXP
1520# define PNG_IMPEXP
1521#endif
1522
1523#ifdef PNG_BUILDSYMS
1524# ifndef PNG_EXPORT
1525# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1526# endif
1527# ifdef PNG_USE_GLOBAL_ARRAYS
1528# ifndef PNG_EXPORT_VAR
1529# define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1530# endif
1531# endif
1532#endif
1533
1534#ifndef PNG_EXPORT
1535# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1536#endif
1537
1538#ifdef PNG_USE_GLOBAL_ARRAYS
1539# ifndef PNG_EXPORT_VAR
1540# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1541# endif
1542#endif
1543
1544#ifdef PNG_PEDANTIC_WARNINGS
1545# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
1546# define PNG_PEDANTIC_WARNINGS_SUPPORTED
1547# endif
1548#endif
1549
1550#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
1551/* Support for compiler specific function attributes. These are used
1552 * so that where compiler support is available incorrect use of API
1553 * functions in png.h will generate compiler warnings. Added at libpng
1554 * version 1.2.41.
1555 */
1556# ifdef __GNUC__
1557# ifndef PNG_USE_RESULT
1558# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
1559# endif
1560# ifndef PNG_NORETURN
1561# define PNG_NORETURN __attribute__((__noreturn__))
1562# endif
1563# ifndef PNG_ALLOCATED
1564# define PNG_ALLOCATED __attribute__((__malloc__))
1565# endif
1566
1567 /* This specifically protects structure members that should only be
1568 * accessed from within the library, therefore should be empty during
1569 * a library build.
1570 */
1571# ifndef PNG_DEPRECATED
1572# define PNG_DEPRECATED __attribute__((__deprecated__))
1573# endif
1574# ifndef PNG_DEPSTRUCT
1575# define PNG_DEPSTRUCT __attribute__((__deprecated__))
1576# endif
1577# ifndef PNG_PRIVATE
1578# if 0 /* Doesn't work so we use deprecated instead*/
1579# define PNG_PRIVATE \
1580 __attribute__((warning("This function is not exported by libpng.")))
1581# else
1582# define PNG_PRIVATE \
1583 __attribute__((__deprecated__))
1584# endif
1585# endif /* PNG_PRIVATE */
1586# endif /* __GNUC__ */
1587#endif /* PNG_PEDANTIC_WARNINGS */
1588
1589#ifndef PNG_DEPRECATED
1590# define PNG_DEPRECATED /* Use of this function is deprecated */
1591#endif
1592#ifndef PNG_USE_RESULT
1593# define PNG_USE_RESULT /* The result of this function must be checked */
1594#endif
1595#ifndef PNG_NORETURN
1596# define PNG_NORETURN /* This function does not return */
1597#endif
1598#ifndef PNG_ALLOCATED
1599# define PNG_ALLOCATED /* The result of the function is new memory */
1600#endif
1601#ifndef PNG_DEPSTRUCT
1602# define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
1603#endif
1604#ifndef PNG_PRIVATE
1605# define PNG_PRIVATE /* This is a private libpng function */
1606#endif
1607
1608/* User may want to use these so they are not in PNG_INTERNAL. Any library
1609 * functions that are passed far data must be model independent.
1610 */
1611
1612#ifndef PNG_ABORT
1613# define PNG_ABORT() abort()
1614#endif
1615
1616#ifdef PNG_SETJMP_SUPPORTED
1617# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1618#else
1619# define png_jmpbuf(png_ptr) \
1620 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1621#endif
1622
1623#ifdef USE_FAR_KEYWORD /* memory model independent fns */
1624/* Use this to make far-to-near assignments */
1625# define CHECK 1
1626# define NOCHECK 0
1627# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1628# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1629# define png_snprintf _fsnprintf /* Added to v 1.2.19 */
1630# define png_strlen _fstrlen
1631# define png_memcmp _fmemcmp /* SJT: added */
1632# define png_memcpy _fmemcpy
1633# define png_memset _fmemset
1634#else /* Use the usual functions */
1635# define CVT_PTR(ptr) (ptr)
1636# define CVT_PTR_NOCHECK(ptr) (ptr)
1637# ifndef PNG_NO_SNPRINTF
1638# ifdef _MSC_VER
1639# define png_snprintf _snprintf /* Added to v 1.2.19 */
1640# define png_snprintf2 _snprintf
1641# define png_snprintf6 _snprintf
1642# else
1643# define png_snprintf snprintf /* Added to v 1.2.19 */
1644# define png_snprintf2 snprintf
1645# define png_snprintf6 snprintf
1646# endif
1647# else
1648 /* You don't have or don't want to use snprintf(). Caution: Using
1649 * sprintf instead of snprintf exposes your application to accidental
1650 * or malevolent buffer overflows. If you don't have snprintf()
1651 * as a general rule you should provide one (you can get one from
1652 * Portable OpenSSH).
1653 */
1654# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1655# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1656# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1657 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1658# endif
1659# define png_strlen strlen
1660# define png_memcmp memcmp /* SJT: added */
1661# define png_memcpy memcpy
1662# define png_memset memset
1663#endif
1664/* End of memory model independent support */
1665
1666/* Just a little check that someone hasn't tried to define something
1667 * contradictory.
1668 */
1669#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1670# undef PNG_ZBUF_SIZE
1671# define PNG_ZBUF_SIZE 65536L
1672#endif
1673
1674/* Added at libpng-1.2.8 */
1675#endif /* PNG_VERSION_INFO_ONLY */
1676
1677#endif /* PNGCONF_H */
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