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Add various selection menu items to the sample.
[wxWidgets.git] / src / png / pngconf.h
CommitLineData
0272a10d
VZ		 1
2/* pngconf.h - machine configurable file for libpng
3 *
b61cc19c 4 * libpng version 1.4.4 - September 23, 2010
0272a10d 5 * For conditions of distribution and use, see copyright notice in png.h
b61cc19c 6 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
0272a10d
VZ		 7 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
8 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
b61cc19c
PC		 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 *
0272a10d
VZ		 14 */
15
16/* Any machine specific code is near the front of this file, so if you
17 * are configuring libpng for a machine, you may want to read the section
18 * starting here down to where it starts to typedef png_color, png_text,
19 * and png_info.
20 */
21
22#ifndef PNGCONF_H
23#define PNGCONF_H
24
e0e742c3
CE		 25#ifdef __DMC__
26#define PNG_NO_SNPRINTF
27#endif
28
b61cc19c
PC		 29#ifndef PNG_NO_LIMITS_H
30# include <limits.h>
31#endif
32
33/* Added at libpng-1.2.9 */
34
35/* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure"
36 * script.
37 */
38#ifdef PNG_CONFIGURE_LIBPNG
39# ifdef HAVE_CONFIG_H
40# include "config.h"
41# endif
42#endif
43
44/*
45 * Added at libpng-1.2.8
46 *
0272a10d
VZ		 47 * PNG_USER_CONFIG has to be defined on the compiler command line. This
48 * includes the resource compiler for Windows DLL configurations.
49 */
50#ifdef PNG_USER_CONFIG
b61cc19c 51# include "pngusr.h"
0272a10d
VZ		 52# ifndef PNG_USER_PRIVATEBUILD
53# define PNG_USER_PRIVATEBUILD
54# endif
0272a10d
VZ		 55#endif
56
57/*
b61cc19c 58 * If you create a private DLL you should define in "pngusr.h" the following:
0272a10d
VZ		 59 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
60 * the DLL was built>
61 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
62 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
63 * distinguish your DLL from those of the official release. These
64 * correspond to the trailing letters that come after the version
65 * number and must match your private DLL name>
b61cc19c 66 * e.g. // private DLL "libpng14gx.dll"
0272a10d 67 * #define PNG_USER_DLLFNAME_POSTFIX "gx"
b61cc19c
PC		 68 *
69 * The following macros are also at your disposal if you want to complete the
0272a10d
VZ		 70 * DLL VERSIONINFO structure.
71 * - PNG_USER_VERSIONINFO_COMMENTS
72 * - PNG_USER_VERSIONINFO_COMPANYNAME
73 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
74 */
75
76#ifdef __STDC__
b61cc19c
PC		 77# ifdef SPECIALBUILD
78# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
79 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
80# endif
0272a10d 81
b61cc19c
PC		 82# ifdef PRIVATEBUILD
83# pragma message("PRIVATEBUILD is deprecated.\
84 Use PNG_USER_PRIVATEBUILD instead.")
85# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
86# endif
0272a10d
VZ		 87#endif /* __STDC__ */
88
0272a10d
VZ		 89/* End of material added to libpng-1.2.8 */
90
b61cc19c 91#ifndef PNG_VERSION_INFO_ONLY
0272a10d
VZ		 92
93/* This is the size of the compression buffer, and thus the size of
94 * an IDAT chunk. Make this whatever size you feel is best for your
95 * machine. One of these will be allocated per png_struct. When this
96 * is full, it writes the data to the disk, and does some other
97 * calculations. Making this an extremely small size will slow
98 * the library down, but you may want to experiment to determine
99 * where it becomes significant, if you are concerned with memory
100 * usage. Note that zlib allocates at least 32Kb also. For readers,
101 * this describes the size of the buffer available to read the data in.
102 * Unless this gets smaller than the size of a row (compressed),
103 * it should not make much difference how big this is.
104 */
105
106#ifndef PNG_ZBUF_SIZE
107# define PNG_ZBUF_SIZE 8192
108#endif
109
110/* Enable if you want a write-only libpng */
111
112#ifndef PNG_NO_READ_SUPPORTED
113# define PNG_READ_SUPPORTED
114#endif
115
116/* Enable if you want a read-only libpng */
117
118#ifndef PNG_NO_WRITE_SUPPORTED
119# define PNG_WRITE_SUPPORTED
120#endif
121
b61cc19c
PC		 122/* Enabled in 1.4.0. */
123#ifdef PNG_ALLOW_BENIGN_ERRORS
124# define png_benign_error png_warning
125# define png_chunk_benign_error png_chunk_warning
126#else
127# ifndef PNG_BENIGN_ERRORS_SUPPORTED
128# define png_benign_error png_error
129# define png_chunk_benign_error png_chunk_error
130# endif
131#endif
132
133/* Added at libpng version 1.4.0 */
134#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
135# define PNG_WARNINGS_SUPPORTED
136#endif
137
138/* Added at libpng version 1.4.0 */
139#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
140# define PNG_ERROR_TEXT_SUPPORTED
141#endif
142
143/* Added at libpng version 1.4.0 */
144#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
145# define PNG_CHECK_cHRM_SUPPORTED
146#endif
147
148/* Added at libpng version 1.4.0 */
149#if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
150# define PNG_ALIGNED_MEMORY_SUPPORTED
151#endif
152
0272a10d
VZ		 153/* Enabled by default in 1.2.0. You can disable this if you don't need to
154 support PNGs that are embedded in MNG datastreams */
b61cc19c 155#ifndef PNG_NO_MNG_FEATURES
0272a10d
VZ		 156# ifndef PNG_MNG_FEATURES_SUPPORTED
157# define PNG_MNG_FEATURES_SUPPORTED
158# endif
159#endif
160
b61cc19c 161/* Added at libpng version 1.4.0 */
0272a10d
VZ		 162#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
163# ifndef PNG_FLOATING_POINT_SUPPORTED
164# define PNG_FLOATING_POINT_SUPPORTED
165# endif
166#endif
167
b61cc19c
PC		 168/* Added at libpng-1.4.0beta49 for testing (this test is no longer used
169 in libpng and png_calloc() is always present)
170 */
171#define PNG_CALLOC_SUPPORTED
172
0272a10d
VZ		 173/* If you are running on a machine where you cannot allocate more
174 * than 64K of memory at once, uncomment this. While libpng will not
175 * normally need that much memory in a chunk (unless you load up a very
176 * large file), zlib needs to know how big of a chunk it can use, and
177 * libpng thus makes sure to check any memory allocation to verify it
178 * will fit into memory.
179#define PNG_MAX_MALLOC_64K
180 */
181#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
182# define PNG_MAX_MALLOC_64K
183#endif
184
185/* Special munging to support doing things the 'cygwin' way:
186 * 'Normal' png-on-win32 defines/defaults:
187 * PNG_BUILD_DLL -- building dll
188 * PNG_USE_DLL -- building an application, linking to dll
189 * (no define) -- building static library, or building an
190 * application and linking to the static lib
191 * 'Cygwin' defines/defaults:
192 * PNG_BUILD_DLL -- (ignored) building the dll
193 * (no define) -- (ignored) building an application, linking to the dll
b61cc19c 194 * PNG_STATIC -- (ignored) building the static lib, or building an
0272a10d 195 * application that links to the static lib.
b61cc19c 196 * ALL_STATIC -- (ignored) building various static libs, or building an
0272a10d
VZ		 197 * application that links to the static libs.
198 * Thus,
199 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
200 * this bit of #ifdefs will define the 'correct' config variables based on
201 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
202 * unnecessary.
203 *
204 * Also, the precedence order is:
205 * ALL_STATIC (since we can't #undef something outside our namespace)
206 * PNG_BUILD_DLL
207 * PNG_STATIC
208 * (nothing) == PNG_USE_DLL
b61cc19c 209 *
0272a10d 210 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
b61cc19c 211 * of auto-import in binutils, we no longer need to worry about
0272a10d
VZ		 212 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
213 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
b61cc19c 214 * to __declspec() stuff. However, we DO need to worry about
0272a10d 215 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
b61cc19c 216 * such as CONSOLE_IO.
0272a10d 217 */
b61cc19c
PC		 218#ifdef __CYGWIN__
219# ifdef ALL_STATIC
220# ifdef PNG_BUILD_DLL
0272a10d
VZ		 221# undef PNG_BUILD_DLL
222# endif
b61cc19c 223# ifdef PNG_USE_DLL
0272a10d
VZ		 224# undef PNG_USE_DLL
225# endif
b61cc19c 226# ifdef PNG_DLL
0272a10d
VZ		 227# undef PNG_DLL
228# endif
b61cc19c 229# ifndef PNG_STATIC
0272a10d
VZ		 230# define PNG_STATIC
231# endif
232# else
b61cc19c
PC		 233# ifdef PNG_BUILD_DLL
234# ifdef PNG_STATIC
0272a10d
VZ		 235# undef PNG_STATIC
236# endif
b61cc19c 237# ifdef PNG_USE_DLL
0272a10d
VZ		 238# undef PNG_USE_DLL
239# endif
b61cc19c 240# ifndef PNG_DLL
0272a10d
VZ		 241# define PNG_DLL
242# endif
243# else
b61cc19c
PC		 244# ifdef PNG_STATIC
245# ifdef PNG_USE_DLL
0272a10d
VZ		 246# undef PNG_USE_DLL
247# endif
b61cc19c 248# ifdef PNG_DLL
0272a10d
VZ		 249# undef PNG_DLL
250# endif
251# else
b61cc19c 252# ifndef PNG_USE_DLL
0272a10d
VZ		 253# define PNG_USE_DLL
254# endif
b61cc19c 255# ifndef PNG_DLL
0272a10d
VZ		 256# define PNG_DLL
257# endif
b61cc19c
PC		 258# endif
259# endif
0272a10d
VZ		 260# endif
261#endif
262
263/* This protects us against compilers that run on a windowing system
264 * and thus don't have or would rather us not use the stdio types:
265 * stdin, stdout, and stderr. The only one currently used is stderr
266 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
267 * prevent these from being compiled and used. #defining PNG_NO_STDIO
268 * will also prevent these, plus will prevent the entire set of stdio
269 * macros and functions (FILE *, printf, etc.) from being compiled and used,
270 * unless (PNG_DEBUG > 0) has been #defined.
271 *
272 * #define PNG_NO_CONSOLE_IO
273 * #define PNG_NO_STDIO
274 */
275
b61cc19c 276#ifdef _WIN32_WCE
0272a10d 277# define PNG_NO_CONSOLE_IO
b61cc19c
PC		 278# define PNG_NO_STDIO
279# define PNG_NO_TIME_RFC1123
0272a10d
VZ		 280# ifdef PNG_DEBUG
281# undef PNG_DEBUG
282# endif
283#endif
284
b61cc19c
PC		 285#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
286# define PNG_STDIO_SUPPORTED
287#endif
288
0272a10d 289#ifdef PNG_BUILD_DLL
b61cc19c
PC		 290# if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
291# define PNG_NO_CONSOLE_IO
0272a10d
VZ		 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
b61cc19c 305# include <stdio.h>
0272a10d
VZ		 306# endif
307
b61cc19c
PC		 308#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
309# define PNG_CONSOLE_IO_SUPPORTED
310#endif
311
0272a10d
VZ		 312/* This macro protects us against machines that don't have function
313 * prototypes (ie K&R style headers). If your compiler does not handle
314 * function prototypes, define this macro and use the included ansi2knr.
315 * I've always been able to use _NO_PROTO as the indicator, but you may
316 * need to drag the empty declaration out in front of here, or change the
317 * ifdef to suit your own needs.
318 */
319#ifndef PNGARG
320
321#ifdef OF /* zlib prototype munger */
322# define PNGARG(arglist) OF(arglist)
323#else
324
325#ifdef _NO_PROTO
326# define PNGARG(arglist) ()
0272a10d
VZ		 327#else
328# define PNGARG(arglist) arglist
329#endif /* _NO_PROTO */
330
0272a10d
VZ		 331#endif /* OF */
332
333#endif /* PNGARG */
334
335/* Try to determine if we are compiling on a Mac. Note that testing for
336 * just __MWERKS__ is not good enough, because the Codewarrior is now used
337 * on non-Mac platforms.
338 */
339#ifndef MACOS
340# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
341 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
342# define MACOS
343# endif
344#endif
345
b61cc19c
PC		 346/* Enough people need this for various reasons to include it here */
347#if !defined(MACOS) && !defined(RISCOS)
0272a10d
VZ		 348# include <sys/types.h>
349#endif
350
b61cc19c
PC		 351/* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
352#if !defined(PNG_NO_SETJMP) && \
353 !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
0272a10d
VZ		 354# define PNG_SETJMP_SUPPORTED
355#endif
356
357#ifdef PNG_SETJMP_SUPPORTED
358/* This is an attempt to force a single setjmp behaviour on Linux. If
359 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
b61cc19c
PC		 360 *
361 * You can bypass this test if you know that your application uses exactly
362 * the same setjmp.h that was included when libpng was built. Only define
363 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
364 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
365 * while building a separate libpng library for general use.
0272a10d
VZ		 366 */
367
b61cc19c
PC		 368# ifndef PNG_SKIP_SETJMP_CHECK
369# ifdef __linux__
370# ifdef _BSD_SOURCE
371# define PNG_SAVE_BSD_SOURCE
372# undef _BSD_SOURCE
373# endif
374# ifdef _SETJMP_H
375 /* If you encounter a compiler error here, see the explanation
376 * near the end of INSTALL.
377 */
378 __pngconf.h__ in libpng already includes setjmp.h;
379 __dont__ include it again.;
380# endif
381# endif /* __linux__ */
382# endif /* PNG_SKIP_SETJMP_CHECK */
0272a10d 383
b61cc19c 384 /* Include setjmp.h for error handling */
0272a10d
VZ		 385# include <setjmp.h>
386
387# ifdef __linux__
388# ifdef PNG_SAVE_BSD_SOURCE
b61cc19c
PC		 389# ifdef _BSD_SOURCE
390# undef _BSD_SOURCE
970f6abe 391# endif
b61cc19c 392# define _BSD_SOURCE
0272a10d
VZ		 393# undef PNG_SAVE_BSD_SOURCE
394# endif
395# endif /* __linux__ */
396#endif /* PNG_SETJMP_SUPPORTED */
397
398#ifdef BSD
399# include <strings.h>
400#else
401# include <string.h>
402#endif
403
404/* Other defines for things like memory and the like can go here. */
0272a10d 405
b61cc19c
PC		 406/* This controls how fine the quantizing gets. As this allocates
407 * a largish chunk of memory (32K), those who are not as concerned
408 * with quantizing quality can decrease some or all of these.
0272a10d 409 */
0272a10d 410
b61cc19c
PC		 411/* Prior to libpng-1.4.2, these were PNG_DITHER_*_BITS
412 * These migration aids will be removed from libpng-1.5.0.
0272a10d 413 */
b61cc19c
PC		 414#ifdef PNG_DITHER_RED_BITS
415# define PNG_QUANTIZE_RED_BITS PNG_DITHER_RED_BITS
0272a10d 416#endif
b61cc19c
PC		 417#ifdef PNG_DITHER_GREEN_BITS
418# define PNG_QUANTIZE_GREEN_BITS PNG_DITHER_GREEN_BITS
0272a10d 419#endif
b61cc19c
PC		 420#ifdef PNG_DITHER_BLUE_BITS
421# define PNG_QUANTIZE_BLUE_BITS PNG_DITHER_BLUE_BITS
0272a10d
VZ		 422#endif
423
b61cc19c
PC		 424#ifndef PNG_QUANTIZE_RED_BITS
425# define PNG_QUANTIZE_RED_BITS 5
0272a10d 426#endif
b61cc19c
PC		 427#ifndef PNG_QUANTIZE_GREEN_BITS
428# define PNG_QUANTIZE_GREEN_BITS 5
0272a10d 429#endif
b61cc19c
PC		 430#ifndef PNG_QUANTIZE_BLUE_BITS
431# define PNG_QUANTIZE_BLUE_BITS 5
0272a10d
VZ		 432#endif
433
434/* This controls how fine the gamma correction becomes when you
435 * are only interested in 8 bits anyway. Increasing this value
436 * results in more memory being used, and more pow() functions
437 * being called to fill in the gamma tables. Don't set this value
438 * less then 8, and even that may not work (I haven't tested it).
439 */
440
441#ifndef PNG_MAX_GAMMA_8
442# define PNG_MAX_GAMMA_8 11
443#endif
444
445/* This controls how much a difference in gamma we can tolerate before
446 * we actually start doing gamma conversion.
447 */
448#ifndef PNG_GAMMA_THRESHOLD
449# define PNG_GAMMA_THRESHOLD 0.05
450#endif
451
0272a10d
VZ		 452/* The following uses const char * instead of char * for error
453 * and warning message functions, so some compilers won't complain.
b61cc19c 454 * If you do not want to use const, define PNG_NO_CONST.
0272a10d
VZ		 455 */
456
b61cc19c
PC		 457#ifndef PNG_CONST
458# ifndef PNG_NO_CONST
459# define PNG_CONST const
460# else
461# define PNG_CONST
462# endif
0272a10d
VZ		 463#endif
464
465/* The following defines give you the ability to remove code from the
466 * library that you will not be using. I wish I could figure out how to
467 * automate this, but I can't do that without making it seriously hard
468 * on the users. So if you are not using an ability, change the #define
b61cc19c
PC		 469 * to an #undef, or pass in PNG_NO_feature and that part of the library
470 * will not be compiled.
471
472 * If your linker can't find a function, you may want to make sure the
0272a10d
VZ		 473 * ability is defined here. Some of these depend upon some others being
474 * defined. I haven't figured out all the interactions here, so you may
475 * have to experiment awhile to get everything to compile. If you are
476 * creating or using a shared library, you probably shouldn't touch this,
477 * as it will affect the size of the structures, and this will cause bad
478 * things to happen if the library and/or application ever change.
479 */
480
481/* Any features you will not be using can be undef'ed here */
482
483/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
b61cc19c
PC		 484 * to turn it off with PNG_NO_READ|WRITE_TRANSFORMS on the compile line,
485 * then pick and choose which ones to define without having to edit this
486 * file. It is safe to use the PNG_NO_READ|WRITE_TRANSFORMS
0272a10d
VZ		 487 * if you only want to have a png-compliant reader/writer but don't need
488 * any of the extra transformations. This saves about 80 kbytes in a
489 * typical installation of the library. (PNG_NO_* form added in version
b61cc19c
PC		 490 * 1.0.1c, for consistency; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
491 * 1.4.0)
0272a10d
VZ		 492 */
493
0272a10d
VZ		 494/* Ignore attempt to turn off both floating and fixed point support */
495#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
496 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
497# define PNG_FIXED_POINT_SUPPORTED
498#endif
499
b61cc19c 500#ifdef PNG_READ_SUPPORTED
0272a10d 501
b61cc19c 502/* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */
0272a10d
VZ		 503#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
504 !defined(PNG_NO_READ_TRANSFORMS)
505# define PNG_READ_TRANSFORMS_SUPPORTED
506#endif
507
508#ifdef PNG_READ_TRANSFORMS_SUPPORTED
509# ifndef PNG_NO_READ_EXPAND
510# define PNG_READ_EXPAND_SUPPORTED
511# endif
512# ifndef PNG_NO_READ_SHIFT
513# define PNG_READ_SHIFT_SUPPORTED
514# endif
515# ifndef PNG_NO_READ_PACK
516# define PNG_READ_PACK_SUPPORTED
517# endif
518# ifndef PNG_NO_READ_BGR
519# define PNG_READ_BGR_SUPPORTED
520# endif
521# ifndef PNG_NO_READ_SWAP
522# define PNG_READ_SWAP_SUPPORTED
523# endif
524# ifndef PNG_NO_READ_PACKSWAP
525# define PNG_READ_PACKSWAP_SUPPORTED
526# endif
527# ifndef PNG_NO_READ_INVERT
528# define PNG_READ_INVERT_SUPPORTED
529# endif
b61cc19c
PC		 530# ifndef PNG_NO_READ_QUANTIZE
531 /* Prior to libpng-1.4.0 this was PNG_READ_DITHER_SUPPORTED */
532# ifndef PNG_NO_READ_DITHER /* This migration aid will be removed */
533# define PNG_READ_QUANTIZE_SUPPORTED
534# endif
0272a10d
VZ		 535# endif
536# ifndef PNG_NO_READ_BACKGROUND
537# define PNG_READ_BACKGROUND_SUPPORTED
538# endif
539# ifndef PNG_NO_READ_16_TO_8
540# define PNG_READ_16_TO_8_SUPPORTED
541# endif
542# ifndef PNG_NO_READ_FILLER
543# define PNG_READ_FILLER_SUPPORTED
544# endif
545# ifndef PNG_NO_READ_GAMMA
546# define PNG_READ_GAMMA_SUPPORTED
547# endif
548# ifndef PNG_NO_READ_GRAY_TO_RGB
549# define PNG_READ_GRAY_TO_RGB_SUPPORTED
550# endif
551# ifndef PNG_NO_READ_SWAP_ALPHA
552# define PNG_READ_SWAP_ALPHA_SUPPORTED
553# endif
554# ifndef PNG_NO_READ_INVERT_ALPHA
555# define PNG_READ_INVERT_ALPHA_SUPPORTED
556# endif
557# ifndef PNG_NO_READ_STRIP_ALPHA
558# define PNG_READ_STRIP_ALPHA_SUPPORTED
559# endif
560# ifndef PNG_NO_READ_USER_TRANSFORM
561# define PNG_READ_USER_TRANSFORM_SUPPORTED
562# endif
563# ifndef PNG_NO_READ_RGB_TO_GRAY
564# define PNG_READ_RGB_TO_GRAY_SUPPORTED
565# endif
566#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
567
b61cc19c 568/* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
0272a10d 569#if !defined(PNG_NO_PROGRESSIVE_READ) && \
b61cc19c
PC		 570 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
571# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
572#endif /* about interlacing capability! You'll */
573 /* still have interlacing unless you change the following define: */
0272a10d 574
b61cc19c
PC		 575#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
576
577/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
578#if !defined(PNG_NO_SEQUENTIAL_READ) && \
579 !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
580 !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
581# define PNG_SEQUENTIAL_READ_SUPPORTED
582#endif
0272a10d
VZ		 583
584#ifndef PNG_NO_READ_COMPOSITE_NODIV
585# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
b61cc19c 586# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
0272a10d
VZ		 587# endif
588#endif
589
b61cc19c
PC		 590#if !defined(PNG_NO_GET_INT_32) || defined(PNG_READ_oFFS_SUPPORTED) || \
591 defined(PNG_READ_pCAL_SUPPORTED)
592# ifndef PNG_GET_INT_32_SUPPORTED
593# define PNG_GET_INT_32_SUPPORTED
594# endif
0272a10d
VZ		 595#endif
596
597#endif /* PNG_READ_SUPPORTED */
598
b61cc19c 599#ifdef PNG_WRITE_SUPPORTED
0272a10d 600
b61cc19c
PC		 601/* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
602#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
0272a10d
VZ		 603 !defined(PNG_NO_WRITE_TRANSFORMS)
604# define PNG_WRITE_TRANSFORMS_SUPPORTED
605#endif
606
607#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
608# ifndef PNG_NO_WRITE_SHIFT
609# define PNG_WRITE_SHIFT_SUPPORTED
610# endif
611# ifndef PNG_NO_WRITE_PACK
612# define PNG_WRITE_PACK_SUPPORTED
613# endif
614# ifndef PNG_NO_WRITE_BGR
615# define PNG_WRITE_BGR_SUPPORTED
616# endif
617# ifndef PNG_NO_WRITE_SWAP
618# define PNG_WRITE_SWAP_SUPPORTED
619# endif
620# ifndef PNG_NO_WRITE_PACKSWAP
621# define PNG_WRITE_PACKSWAP_SUPPORTED
622# endif
623# ifndef PNG_NO_WRITE_INVERT
624# define PNG_WRITE_INVERT_SUPPORTED
625# endif
626# ifndef PNG_NO_WRITE_FILLER
627# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
628# endif
629# ifndef PNG_NO_WRITE_SWAP_ALPHA
630# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
631# endif
632# ifndef PNG_NO_WRITE_INVERT_ALPHA
633# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
634# endif
635# ifndef PNG_NO_WRITE_USER_TRANSFORM
636# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
637# endif
638#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
639
640#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
641 !defined(PNG_WRITE_INTERLACING_SUPPORTED)
b61cc19c
PC		 642 /* This is not required for PNG-compliant encoders, but can cause
643 * trouble if left undefined
644 */
645# define PNG_WRITE_INTERLACING_SUPPORTED
0272a10d
VZ		 646#endif
647
648#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
649 !defined(PNG_WRITE_WEIGHTED_FILTER) && \
650 defined(PNG_FLOATING_POINT_SUPPORTED)
651# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
652#endif
653
654#ifndef PNG_NO_WRITE_FLUSH
655# define PNG_WRITE_FLUSH_SUPPORTED
656#endif
657
b61cc19c
PC		 658#if !defined(PNG_NO_SAVE_INT_32) || defined(PNG_WRITE_oFFS_SUPPORTED) || \
659 defined(PNG_WRITE_pCAL_SUPPORTED)
660# ifndef PNG_SAVE_INT_32_SUPPORTED
661# define PNG_SAVE_INT_32_SUPPORTED
662# endif
0272a10d
VZ		 663#endif
664
665#endif /* PNG_WRITE_SUPPORTED */
666
b61cc19c 667#define PNG_NO_ERROR_NUMBERS
0272a10d
VZ		 668
669#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
670 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
671# ifndef PNG_NO_USER_TRANSFORM_PTR
672# define PNG_USER_TRANSFORM_PTR_SUPPORTED
673# endif
674#endif
675
b61cc19c 676#if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
0272a10d
VZ		 677# define PNG_TIME_RFC1123_SUPPORTED
678#endif
679
680/* This adds extra functions in pngget.c for accessing data from the
681 * info pointer (added in version 0.99)
682 * png_get_image_width()
683 * png_get_image_height()
684 * png_get_bit_depth()
685 * png_get_color_type()
686 * png_get_compression_type()
687 * png_get_filter_type()
688 * png_get_interlace_type()
689 * png_get_pixel_aspect_ratio()
690 * png_get_pixels_per_meter()
691 * png_get_x_offset_pixels()
692 * png_get_y_offset_pixels()
693 * png_get_x_offset_microns()
694 * png_get_y_offset_microns()
695 */
696#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
697# define PNG_EASY_ACCESS_SUPPORTED
698#endif
699
b61cc19c
PC		 700/* Added at libpng-1.2.0 */
701#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
702# define PNG_USER_MEM_SUPPORTED
0272a10d
VZ		 703#endif
704
b61cc19c
PC		 705/* Added at libpng-1.2.6 */
706#ifndef PNG_NO_SET_USER_LIMITS
707# ifndef PNG_SET_USER_LIMITS_SUPPORTED
708# define PNG_SET_USER_LIMITS_SUPPORTED
0272a10d 709# endif
b61cc19c
PC		 710 /* Feature added at libpng-1.4.0, this flag added at 1.4.1 */
711# ifndef PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
712# define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
0272a10d 713# endif
b61cc19c
PC		 714 /* Feature added at libpng-1.4.1, this flag added at 1.4.1 */
715# ifndef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
716# define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
0272a10d 717# endif
0272a10d 718#endif
0272a10d 719
b61cc19c
PC		 720/* Added at libpng-1.2.43 */
721#ifndef PNG_USER_LIMITS_SUPPORTED
722# ifndef PNG_NO_USER_LIMITS
723# define PNG_USER_LIMITS_SUPPORTED
724# endif
0272a10d 725#endif
0272a10d 726
b61cc19c
PC		 727/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
728 * how large, set these two limits to 0x7fffffffL
0272a10d
VZ		 729 */
730#ifndef PNG_USER_WIDTH_MAX
731# define PNG_USER_WIDTH_MAX 1000000L
732#endif
733#ifndef PNG_USER_HEIGHT_MAX
734# define PNG_USER_HEIGHT_MAX 1000000L
735#endif
736
b61cc19c
PC		 737/* Added at libpng-1.2.43. To accept all valid PNGs no matter
738 * how large, set these two limits to 0.
739 */
740#ifndef PNG_USER_CHUNK_CACHE_MAX
741# define PNG_USER_CHUNK_CACHE_MAX 0
742#endif
970f6abe 743
b61cc19c
PC		 744/* Added at libpng-1.2.43 */
745#ifndef PNG_USER_CHUNK_MALLOC_MAX
746# define PNG_USER_CHUNK_MALLOC_MAX 0
747#endif
748
749/* Added at libpng-1.4.0 */
750#if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
751# define PNG_IO_STATE_SUPPORTED
752#endif
753
754#ifndef PNG_LITERAL_SHARP
755# define PNG_LITERAL_SHARP 0x23
756#endif
757#ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
758# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
759#endif
760#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
761# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
762#endif
970f6abe
VZ		 763#ifndef PNG_STRING_NEWLINE
764#define PNG_STRING_NEWLINE "\n"
765#endif
766
0272a10d
VZ		 767/* These are currently experimental features, define them if you want */
768
b61cc19c 769/* Very little testing */
0272a10d
VZ		 770/*
771#ifdef PNG_READ_SUPPORTED
772# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
773# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
774# endif
775#endif
776*/
777
778/* This is only for PowerPC big-endian and 680x0 systems */
779/* some testing */
780/*
781#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
782# define PNG_READ_BIG_ENDIAN_SUPPORTED
783#endif
784*/
785
b61cc19c
PC		 786#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
787# define PNG_USE_READ_MACROS
788#endif
789
790/* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
791
792#if !defined(PNG_NO_POINTER_INDEXING) && \
793 !defined(PNG_POINTER_INDEXING_SUPPORTED)
794# define PNG_POINTER_INDEXING_SUPPORTED
795#endif
0272a10d 796
0272a10d
VZ		 797
798/* Any chunks you are not interested in, you can undef here. The
799 * ones that allocate memory may be expecially important (hIST,
800 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
801 * a bit smaller.
802 */
803
b61cc19c
PC		 804/* The size of the png_text structure changed in libpng-1.0.6 when
805 * iTXt support was added. iTXt support was turned off by default through
806 * libpng-1.2.x, to support old apps that malloc the png_text structure
807 * instead of calling png_set_text() and letting libpng malloc it. It
808 * was turned on by default in libpng-1.4.0.
809 */
810
811/* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
0272a10d
VZ		 812#if defined(PNG_READ_SUPPORTED) && \
813 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
814 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
815# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
816#endif
817
b61cc19c 818/* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
0272a10d
VZ		 819#if defined(PNG_WRITE_SUPPORTED) && \
820 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
821 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
822# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
823#endif
824
825#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
826
827#ifdef PNG_NO_READ_TEXT
828# define PNG_NO_READ_iTXt
829# define PNG_NO_READ_tEXt
830# define PNG_NO_READ_zTXt
831#endif
b61cc19c 832
0272a10d
VZ		 833#ifndef PNG_NO_READ_bKGD
834# define PNG_READ_bKGD_SUPPORTED
835# define PNG_bKGD_SUPPORTED
836#endif
837#ifndef PNG_NO_READ_cHRM
838# define PNG_READ_cHRM_SUPPORTED
839# define PNG_cHRM_SUPPORTED
840#endif
841#ifndef PNG_NO_READ_gAMA
842# define PNG_READ_gAMA_SUPPORTED
843# define PNG_gAMA_SUPPORTED
844#endif
845#ifndef PNG_NO_READ_hIST
846# define PNG_READ_hIST_SUPPORTED
847# define PNG_hIST_SUPPORTED
848#endif
849#ifndef PNG_NO_READ_iCCP
850# define PNG_READ_iCCP_SUPPORTED
851# define PNG_iCCP_SUPPORTED
852#endif
853#ifndef PNG_NO_READ_iTXt
854# ifndef PNG_READ_iTXt_SUPPORTED
855# define PNG_READ_iTXt_SUPPORTED
856# endif
857# ifndef PNG_iTXt_SUPPORTED
858# define PNG_iTXt_SUPPORTED
859# endif
860#endif
861#ifndef PNG_NO_READ_oFFs
862# define PNG_READ_oFFs_SUPPORTED
863# define PNG_oFFs_SUPPORTED
864#endif
865#ifndef PNG_NO_READ_pCAL
866# define PNG_READ_pCAL_SUPPORTED
867# define PNG_pCAL_SUPPORTED
868#endif
869#ifndef PNG_NO_READ_sCAL
870# define PNG_READ_sCAL_SUPPORTED
871# define PNG_sCAL_SUPPORTED
872#endif
873#ifndef PNG_NO_READ_pHYs
874# define PNG_READ_pHYs_SUPPORTED
875# define PNG_pHYs_SUPPORTED
876#endif
877#ifndef PNG_NO_READ_sBIT
878# define PNG_READ_sBIT_SUPPORTED
879# define PNG_sBIT_SUPPORTED
880#endif
881#ifndef PNG_NO_READ_sPLT
882# define PNG_READ_sPLT_SUPPORTED
883# define PNG_sPLT_SUPPORTED
884#endif
885#ifndef PNG_NO_READ_sRGB
886# define PNG_READ_sRGB_SUPPORTED
887# define PNG_sRGB_SUPPORTED
888#endif
889#ifndef PNG_NO_READ_tEXt
890# define PNG_READ_tEXt_SUPPORTED
891# define PNG_tEXt_SUPPORTED
892#endif
893#ifndef PNG_NO_READ_tIME
894# define PNG_READ_tIME_SUPPORTED
895# define PNG_tIME_SUPPORTED
896#endif
897#ifndef PNG_NO_READ_tRNS
898# define PNG_READ_tRNS_SUPPORTED
899# define PNG_tRNS_SUPPORTED
900#endif
901#ifndef PNG_NO_READ_zTXt
902# define PNG_READ_zTXt_SUPPORTED
903# define PNG_zTXt_SUPPORTED
904#endif
0272a10d
VZ		 905#ifndef PNG_NO_READ_OPT_PLTE
906# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
907#endif /* optional PLTE chunk in RGB and RGBA images */
908#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
909 defined(PNG_READ_zTXt_SUPPORTED)
910# define PNG_READ_TEXT_SUPPORTED
911# define PNG_TEXT_SUPPORTED
912#endif
913
914#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
915
b61cc19c
PC		 916#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
917# ifndef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
918# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
919# endif
920# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
921# define PNG_UNKNOWN_CHUNKS_SUPPORTED
922# endif
923# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
924# define PNG_READ_USER_CHUNKS_SUPPORTED
925# endif
926#endif
927#ifndef PNG_NO_READ_USER_CHUNKS
928# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
929# define PNG_READ_USER_CHUNKS_SUPPORTED
930# endif
931# ifndef PNG_USER_CHUNKS_SUPPORTED
932# define PNG_USER_CHUNKS_SUPPORTED
933# endif
934#endif
935#ifndef PNG_NO_HANDLE_AS_UNKNOWN
936# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
937# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
938# endif
939#endif
940
941#ifdef PNG_WRITE_SUPPORTED
0272a10d
VZ		 942#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
943
944#ifdef PNG_NO_WRITE_TEXT
945# define PNG_NO_WRITE_iTXt
946# define PNG_NO_WRITE_tEXt
947# define PNG_NO_WRITE_zTXt
948#endif
949#ifndef PNG_NO_WRITE_bKGD
950# define PNG_WRITE_bKGD_SUPPORTED
951# ifndef PNG_bKGD_SUPPORTED
952# define PNG_bKGD_SUPPORTED
953# endif
954#endif
955#ifndef PNG_NO_WRITE_cHRM
956# define PNG_WRITE_cHRM_SUPPORTED
957# ifndef PNG_cHRM_SUPPORTED
958# define PNG_cHRM_SUPPORTED
959# endif
960#endif
961#ifndef PNG_NO_WRITE_gAMA
962# define PNG_WRITE_gAMA_SUPPORTED
963# ifndef PNG_gAMA_SUPPORTED
964# define PNG_gAMA_SUPPORTED
965# endif
966#endif
967#ifndef PNG_NO_WRITE_hIST
968# define PNG_WRITE_hIST_SUPPORTED
969# ifndef PNG_hIST_SUPPORTED
970# define PNG_hIST_SUPPORTED
971# endif
972#endif
973#ifndef PNG_NO_WRITE_iCCP
974# define PNG_WRITE_iCCP_SUPPORTED
975# ifndef PNG_iCCP_SUPPORTED
976# define PNG_iCCP_SUPPORTED
977# endif
978#endif
979#ifndef PNG_NO_WRITE_iTXt
980# ifndef PNG_WRITE_iTXt_SUPPORTED
981# define PNG_WRITE_iTXt_SUPPORTED
982# endif
983# ifndef PNG_iTXt_SUPPORTED
984# define PNG_iTXt_SUPPORTED
985# endif
986#endif
987#ifndef PNG_NO_WRITE_oFFs
988# define PNG_WRITE_oFFs_SUPPORTED
989# ifndef PNG_oFFs_SUPPORTED
990# define PNG_oFFs_SUPPORTED
991# endif
992#endif
993#ifndef PNG_NO_WRITE_pCAL
994# define PNG_WRITE_pCAL_SUPPORTED
995# ifndef PNG_pCAL_SUPPORTED
996# define PNG_pCAL_SUPPORTED
997# endif
998#endif
999#ifndef PNG_NO_WRITE_sCAL
1000# define PNG_WRITE_sCAL_SUPPORTED
1001# ifndef PNG_sCAL_SUPPORTED
1002# define PNG_sCAL_SUPPORTED
1003# endif
1004#endif
1005#ifndef PNG_NO_WRITE_pHYs
1006# define PNG_WRITE_pHYs_SUPPORTED
1007# ifndef PNG_pHYs_SUPPORTED
1008# define PNG_pHYs_SUPPORTED
1009# endif
1010#endif
1011#ifndef PNG_NO_WRITE_sBIT
1012# define PNG_WRITE_sBIT_SUPPORTED
1013# ifndef PNG_sBIT_SUPPORTED
1014# define PNG_sBIT_SUPPORTED
1015# endif
1016#endif
1017#ifndef PNG_NO_WRITE_sPLT
1018# define PNG_WRITE_sPLT_SUPPORTED
1019# ifndef PNG_sPLT_SUPPORTED
1020# define PNG_sPLT_SUPPORTED
1021# endif
1022#endif
1023#ifndef PNG_NO_WRITE_sRGB
1024# define PNG_WRITE_sRGB_SUPPORTED
1025# ifndef PNG_sRGB_SUPPORTED
1026# define PNG_sRGB_SUPPORTED
1027# endif
1028#endif
1029#ifndef PNG_NO_WRITE_tEXt
1030# define PNG_WRITE_tEXt_SUPPORTED
1031# ifndef PNG_tEXt_SUPPORTED
1032# define PNG_tEXt_SUPPORTED
1033# endif
1034#endif
1035#ifndef PNG_NO_WRITE_tIME
1036# define PNG_WRITE_tIME_SUPPORTED
1037# ifndef PNG_tIME_SUPPORTED
1038# define PNG_tIME_SUPPORTED
1039# endif
1040#endif
1041#ifndef PNG_NO_WRITE_tRNS
1042# define PNG_WRITE_tRNS_SUPPORTED
1043# ifndef PNG_tRNS_SUPPORTED
1044# define PNG_tRNS_SUPPORTED
1045# endif
1046#endif
1047#ifndef PNG_NO_WRITE_zTXt
1048# define PNG_WRITE_zTXt_SUPPORTED
1049# ifndef PNG_zTXt_SUPPORTED
1050# define PNG_zTXt_SUPPORTED
1051# endif
1052#endif
0272a10d
VZ		 1053#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1054 defined(PNG_WRITE_zTXt_SUPPORTED)
1055# define PNG_WRITE_TEXT_SUPPORTED
1056# ifndef PNG_TEXT_SUPPORTED
1057# define PNG_TEXT_SUPPORTED
1058# endif
1059#endif
1060
b61cc19c
PC		 1061#ifdef PNG_WRITE_tIME_SUPPORTED
1062# ifndef PNG_NO_CONVERT_tIME
1063# ifndef _WIN32_WCE
1064/* The "tm" structure is not supported on WindowsCE */
1065# ifndef PNG_CONVERT_tIME_SUPPORTED
1066# define PNG_CONVERT_tIME_SUPPORTED
1067# endif
1068# endif
1069# endif
1070#endif
1071
0272a10d
VZ		 1072#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1073
b61cc19c
PC		 1074#ifndef PNG_NO_WRITE_FILTER
1075# ifndef PNG_WRITE_FILTER_SUPPORTED
1076# define PNG_WRITE_FILTER_SUPPORTED
1077# endif
1078#endif
1079
1080#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1081# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1082# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1083# define PNG_UNKNOWN_CHUNKS_SUPPORTED
1084# endif
1085#endif
1086#ifndef PNG_NO_HANDLE_AS_UNKNOWN
1087# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1088# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1089# endif
1090#endif
1091#endif /* PNG_WRITE_SUPPORTED */
1092
0272a10d
VZ		 1093/* Turn this off to disable png_read_png() and
1094 * png_write_png() and leave the row_pointers member
1095 * out of the info structure.
1096 */
1097#ifndef PNG_NO_INFO_IMAGE
1098# define PNG_INFO_IMAGE_SUPPORTED
1099#endif
1100
b61cc19c
PC		 1101/* Need the time information for converting tIME chunks */
1102#ifdef PNG_CONVERT_tIME_SUPPORTED
0272a10d
VZ		 1103 /* "time.h" functions are not supported on WindowsCE */
1104# include <time.h>
0272a10d
VZ		 1105#endif
1106
1107/* Some typedefs to get us started. These should be safe on most of the
1108 * common platforms. The typedefs should be at least as large as the
1109 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1110 * don't have to be exactly that size. Some compilers dislike passing
1111 * unsigned shorts as function parameters, so you may be better off using
b61cc19c 1112 * unsigned int for png_uint_16.
0272a10d
VZ		 1113 */
1114
b61cc19c
PC		 1115#if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL)
1116typedef unsigned int png_uint_32;
1117typedef int png_int_32;
1118#else
0272a10d
VZ		 1119typedef unsigned long png_uint_32;
1120typedef long png_int_32;
b61cc19c 1121#endif
0272a10d
VZ		 1122typedef unsigned short png_uint_16;
1123typedef short png_int_16;
1124typedef unsigned char png_byte;
1125
b61cc19c
PC		 1126#ifdef PNG_NO_SIZE_T
1127 typedef unsigned int png_size_t;
0272a10d
VZ		 1128#else
1129 typedef size_t png_size_t;
0272a10d 1130#endif
b61cc19c 1131#define png_sizeof(x) (sizeof (x))
0272a10d
VZ		 1132
1133/* The following is needed for medium model support. It cannot be in the
b61cc19c 1134 * pngpriv.h header. Needs modification for other compilers besides
0272a10d
VZ		 1135 * MSC. Model independent support declares all arrays and pointers to be
1136 * large using the far keyword. The zlib version used must also support
1137 * model independent data. As of version zlib 1.0.4, the necessary changes
1138 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1139 * changes that are needed. (Tim Wegner)
1140 */
1141
1142/* Separate compiler dependencies (problem here is that zlib.h always
b61cc19c
PC		 1143 * defines FAR. (SJT)
1144 */
0272a10d
VZ		 1145#ifdef __BORLANDC__
1146# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1147# define LDATA 1
1148# else
1149# define LDATA 0
1150# endif
1151 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1152# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1153# define PNG_MAX_MALLOC_64K
1154# if (LDATA != 1)
1155# ifndef FAR
1156# define FAR __far
1157# endif
1158# define USE_FAR_KEYWORD
1159# endif /* LDATA != 1 */
1160 /* Possibly useful for moving data out of default segment.
1161 * Uncomment it if you want. Could also define FARDATA as
1162 * const if your compiler supports it. (SJT)
1163# define FARDATA FAR
1164 */
1165# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1166#endif /* __BORLANDC__ */
1167
1168
1169/* Suggest testing for specific compiler first before testing for
1170 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1171 * making reliance oncertain keywords suspect. (SJT)
1172 */
1173
1174/* MSC Medium model */
b61cc19c
PC		 1175#ifdef FAR
1176# ifdef M_I86MM
0272a10d
VZ		 1177# define USE_FAR_KEYWORD
1178# define FARDATA FAR
1179# include <dos.h>
1180# endif
1181#endif
1182
1183/* SJT: default case */
1184#ifndef FAR
1185# define FAR
1186#endif
1187
1188/* At this point FAR is always defined */
1189#ifndef FARDATA
1190# define FARDATA
1191#endif
1192
1193/* Typedef for floating-point numbers that are converted
1194 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1195typedef png_int_32 png_fixed_point;
1196
1197/* Add typedefs for pointers */
1198typedef void FAR * png_voidp;
1199typedef png_byte FAR * png_bytep;
1200typedef png_uint_32 FAR * png_uint_32p;
1201typedef png_int_32 FAR * png_int_32p;
1202typedef png_uint_16 FAR * png_uint_16p;
1203typedef png_int_16 FAR * png_int_16p;
1204typedef PNG_CONST char FAR * png_const_charp;
1205typedef char FAR * png_charp;
1206typedef png_fixed_point FAR * png_fixed_point_p;
1207
1208#ifndef PNG_NO_STDIO
0272a10d
VZ		 1209typedef FILE * png_FILE_p;
1210#endif
0272a10d
VZ		 1211
1212#ifdef PNG_FLOATING_POINT_SUPPORTED
1213typedef double FAR * png_doublep;
1214#endif
1215
1216/* Pointers to pointers; i.e. arrays */
1217typedef png_byte FAR * FAR * png_bytepp;
1218typedef png_uint_32 FAR * FAR * png_uint_32pp;
1219typedef png_int_32 FAR * FAR * png_int_32pp;
1220typedef png_uint_16 FAR * FAR * png_uint_16pp;
1221typedef png_int_16 FAR * FAR * png_int_16pp;
1222typedef PNG_CONST char FAR * FAR * png_const_charpp;
1223typedef char FAR * FAR * png_charpp;
1224typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1225#ifdef PNG_FLOATING_POINT_SUPPORTED
1226typedef double FAR * FAR * png_doublepp;
1227#endif
1228
1229/* Pointers to pointers to pointers; i.e., pointer to array */
1230typedef char FAR * FAR * FAR * png_charppp;
1231
b61cc19c 1232/* Define PNG_BUILD_DLL if the module being built is a Windows
0272a10d
VZ		 1233 * LIBPNG DLL.
1234 *
1235 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1236 * It is equivalent to Microsoft predefined macro _DLL that is
1237 * automatically defined when you compile using the share
1238 * version of the CRT (C Run-Time library)
1239 *
1240 * The cygwin mods make this behavior a little different:
1241 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1242 * Define PNG_STATIC if you are building a static library for use with cygwin,
1243 * -or- if you are building an application that you want to link to the
1244 * static library.
1245 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1246 * the other flags is defined.
1247 */
1248
1249#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1250# define PNG_DLL
1251#endif
0272a10d 1252
b61cc19c
PC		 1253/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1254 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1255 * Don't ignore those warnings; you must also reset the default calling
1256 * convention in your compiler to match your PNGAPI, and you must build
1257 * zlib and your applications the same way you build libpng.
0272a10d 1258 */
0272a10d 1259
b61cc19c 1260#ifdef __CYGWIN__
0272a10d
VZ		 1261# undef PNGAPI
1262# define PNGAPI __cdecl
1263# undef PNG_IMPEXP
1264# define PNG_IMPEXP
b61cc19c 1265#endif
0272a10d 1266
b61cc19c
PC		 1267#ifdef __WATCOMC__
1268# ifndef PNGAPI
1269# define PNGAPI
1270# endif
1271#endif
0272a10d
VZ		 1272
1273#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1274# ifndef PNG_NO_MODULEDEF
1275# define PNG_NO_MODULEDEF
1276# endif
1277#endif
1278
1279#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1280# define PNG_IMPEXP
1281#endif
1282
1283#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1284 (( defined(_Windows) || defined(_WINDOWS) || \
1285 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1286
1287# ifndef PNGAPI
1288# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1289# define PNGAPI __cdecl
1290# else
1291# define PNGAPI _cdecl
1292# endif
1293# endif
1294
1295# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1296 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1297# define PNG_IMPEXP
1298# endif
1299
b61cc19c 1300# ifndef PNG_IMPEXP
0272a10d 1301
b61cc19c
PC		 1302# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1303# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1304
1305 /* Borland/Microsoft */
1306# if defined(_MSC_VER) || defined(__BORLANDC__)
1307# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1308# define PNG_EXPORT PNG_EXPORT_TYPE1
1309# else
1310# define PNG_EXPORT PNG_EXPORT_TYPE2
1311# ifdef PNG_BUILD_DLL
1312# define PNG_IMPEXP __export
1313# else
1314# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in VC++ */
1315# endif /* Exists in Borland C++ for
1316 C++ classes (== huge) */
1317# endif
1318# endif
1319
1320# ifndef PNG_IMPEXP
1321# ifdef PNG_BUILD_DLL
1322# define PNG_IMPEXP __declspec(dllexport)
1323# else
1324# define PNG_IMPEXP __declspec(dllimport)
1325# endif
1326# endif
0272a10d
VZ		 1327# endif /* PNG_IMPEXP */
1328#else /* !(DLL || non-cygwin WINDOWS) */
1329# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
b61cc19c
PC		 1330# ifndef PNGAPI
1331# define PNGAPI _System
1332# endif
0272a10d 1333# else
b61cc19c
PC		 1334# if 0 /* ... other platforms, with other meanings */
1335# endif
0272a10d
VZ		 1336# endif
1337#endif
1338
1339#ifndef PNGAPI
1340# define PNGAPI
1341#endif
1342#ifndef PNG_IMPEXP
1343# define PNG_IMPEXP
1344#endif
1345
1346#ifdef PNG_BUILDSYMS
1347# ifndef PNG_EXPORT
1348# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1349# endif
0272a10d
VZ		 1350#endif
1351
1352#ifndef PNG_EXPORT
1353# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1354#endif
1355
b61cc19c
PC		 1356#define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
1357
1358/* Support for compiler specific function attributes. These are used
1359 * so that where compiler support is available incorrect use of API
1360 * functions in png.h will generate compiler warnings.
1361 *
1362 * Added at libpng-1.2.41.
1363 */
1364
1365#ifndef PNG_NO_PEDANTIC_WARNINGS
1366# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
1367# define PNG_PEDANTIC_WARNINGS_SUPPORTED
0272a10d
VZ		 1368# endif
1369#endif
1370
b61cc19c
PC		 1371#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
1372/* Support for compiler specific function attributes. These are used
1373 * so that where compiler support is available incorrect use of API
1374 * functions in png.h will generate compiler warnings. Added at libpng
1375 * version 1.2.41.
0272a10d 1376 */
b61cc19c
PC		 1377# ifdef __GNUC__
1378# ifndef PNG_USE_RESULT
1379# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
1380# endif
1381# ifndef PNG_NORETURN
1382# define PNG_NORETURN __attribute__((__noreturn__))
1383# endif
1384# ifndef PNG_ALLOCATED
1385# define PNG_ALLOCATED __attribute__((__malloc__))
1386# endif
0272a10d 1387
b61cc19c
PC		 1388 /* This specifically protects structure members that should only be
1389 * accessed from within the library, therefore should be empty during
1390 * a library build.
1391 */
1392# ifndef PNG_DEPRECATED
1393# define PNG_DEPRECATED __attribute__((__deprecated__))
1394# endif
1395# ifndef PNG_DEPSTRUCT
1396# define PNG_DEPSTRUCT __attribute__((__deprecated__))
1397# endif
1398# ifndef PNG_PRIVATE
1399# if 0 /* Doesn't work so we use deprecated instead*/
1400# define PNG_PRIVATE \
1401 __attribute__((warning("This function is not exported by libpng.")))
1402# else
1403# define PNG_PRIVATE \
1404 __attribute__((__deprecated__))
1405# endif
1406# endif /* PNG_PRIVATE */
1407# endif /* __GNUC__ */
1408#endif /* PNG_PEDANTIC_WARNINGS */
1409
1410#ifndef PNG_DEPRECATED
1411# define PNG_DEPRECATED /* Use of this function is deprecated */
1412#endif
1413#ifndef PNG_USE_RESULT
1414# define PNG_USE_RESULT /* The result of this function must be checked */
1415#endif
1416#ifndef PNG_NORETURN
1417# define PNG_NORETURN /* This function does not return */
1418#endif
1419#ifndef PNG_ALLOCATED
1420# define PNG_ALLOCATED /* The result of the function is new memory */
1421#endif
1422#ifndef PNG_DEPSTRUCT
1423# define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
1424#endif
1425#ifndef PNG_PRIVATE
1426# define PNG_PRIVATE /* This is a private libpng function */
0272a10d
VZ		 1427#endif
1428
b61cc19c
PC		 1429/* Users may want to use these so they are not private. Any library
1430 * functions that are passed far data must be model-independent.
1431 */
1432
1433/* memory model/platform independent fns */
1434#ifndef PNG_ABORT
1435# if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_))
1436# define PNG_ABORT() ExitProcess(0)
1437# else
1438# define PNG_ABORT() abort()
1439# endif
0272a10d
VZ		 1440#endif
1441
b61cc19c
PC		 1442#ifdef USE_FAR_KEYWORD
1443/* Use this to make far-to-near assignments */
0272a10d
VZ		 1444# define CHECK 1
1445# define NOCHECK 0
1446# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1447# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
b61cc19c
PC		 1448# define png_strcpy _fstrcpy
1449# define png_strncpy _fstrncpy /* Added to v 1.2.6 */
0272a10d
VZ		 1450# define png_strlen _fstrlen
1451# define png_memcmp _fmemcmp /* SJT: added */
1452# define png_memcpy _fmemcpy
1453# define png_memset _fmemset
b61cc19c
PC		 1454# define png_sprintf sprintf
1455#else
1456# if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_))
1457# /* Favor Windows over C runtime fns */
1458# define CVT_PTR(ptr) (ptr)
1459# define CVT_PTR_NOCHECK(ptr) (ptr)
1460# define png_strcpy lstrcpyA
1461# define png_strncpy lstrcpynA
1462# define png_strlen lstrlenA
1463# define png_memcmp memcmp
1464# define png_memcpy CopyMemory
1465# define png_memset memset
1466# define png_sprintf wsprintfA
1467# else
1468# define CVT_PTR(ptr) (ptr)
1469# define CVT_PTR_NOCHECK(ptr) (ptr)
1470# define png_strcpy strcpy
1471# define png_strncpy strncpy /* Added to v 1.2.6 */
1472# define png_strlen strlen
1473# define png_memcmp memcmp /* SJT: added */
1474# define png_memcpy memcpy
1475# define png_memset memset
1476# define png_sprintf sprintf
1477# endif
1478#endif
1479
1480#ifndef PNG_NO_SNPRINTF
1481# ifdef _MSC_VER
1482# define png_snprintf _snprintf /* Added to v 1.2.19 */
1483# define png_snprintf2 _snprintf
1484# define png_snprintf6 _snprintf
1485# else
1486# define png_snprintf snprintf /* Added to v 1.2.19 */
1487# define png_snprintf2 snprintf
1488# define png_snprintf6 snprintf
1489# endif
1490#else
1491 /* You don't have or don't want to use snprintf(). Caution: Using
1492 * sprintf instead of snprintf exposes your application to accidental
1493 * or malevolent buffer overflows. If you don't have snprintf()
1494 * as a general rule you should provide one (you can get one from
1495 * Portable OpenSSH).
1496 */
1497# define png_snprintf(s1,n,fmt,x1) png_sprintf(s1,fmt,x1)
1498# define png_snprintf2(s1,n,fmt,x1,x2) png_sprintf(s1,fmt,x1,x2)
1499# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1500 png_sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1501#endif
1502
1503/* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
1504 * and no smaller than png_uint_32. Casts from png_size_t or png_uint_32
1505 * to png_alloc_size_t are not necessary; in fact, it is recommended
1506 * not to use them at all so that the compiler can complain when something
1507 * turns out to be problematic.
1508 * Casts in the other direction (from png_alloc_size_t to png_size_t or
1509 * png_uint_32) should be explicitly applied; however, we do not expect
1510 * to encounter practical situations that require such conversions.
1511 */
1512#if defined(__TURBOC__) && !defined(__FLAT__)
1513 typedef unsigned long png_alloc_size_t;
1514#else
1515# if defined(_MSC_VER) && defined(MAXSEG_64K)
1516 typedef unsigned long png_alloc_size_t;
1517# else
1518 /* This is an attempt to detect an old Windows system where (int) is
1519 * actually 16 bits, in that case png_malloc must have an argument with a
1520 * bigger size to accomodate the requirements of the library.
1521 */
1522# if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_)) && \
1523 (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
1524 typedef DWORD png_alloc_size_t;
0272a10d 1525# else
b61cc19c 1526 typedef png_size_t png_alloc_size_t;
0272a10d 1527# endif
b61cc19c
PC		 1528# endif
1529#endif
1530/* End of memory model/platform independent support */
0272a10d
VZ		 1531
1532/* Just a little check that someone hasn't tried to define something
1533 * contradictory.
1534 */
1535#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1536# undef PNG_ZBUF_SIZE
1537# define PNG_ZBUF_SIZE 65536L
1538#endif
1539
b61cc19c 1540
0272a10d
VZ		 1541/* Added at libpng-1.2.8 */
1542#endif /* PNG_VERSION_INFO_ONLY */
1543
1544#endif /* PNGCONF_H */
wxWidgets (Impactor)