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 | |
1247 | typedef unsigned long png_uint_32; |
1248 | typedef long png_int_32; |
1249 | typedef unsigned short png_uint_16; |
1250 | typedef short png_int_16; |
1251 | typedef 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 */ |
1324 | typedef png_int_32 png_fixed_point; |
1325 | |
1326 | /* Add typedefs for pointers */ |
1327 | typedef void FAR * png_voidp; |
1328 | typedef png_byte FAR * png_bytep; |
1329 | typedef png_uint_32 FAR * png_uint_32p; |
1330 | typedef png_int_32 FAR * png_int_32p; |
1331 | typedef png_uint_16 FAR * png_uint_16p; |
1332 | typedef png_int_16 FAR * png_int_16p; |
1333 | typedef PNG_CONST char FAR * png_const_charp; |
1334 | typedef char FAR * png_charp; |
1335 | typedef png_fixed_point FAR * png_fixed_point_p; |
1336 | |
1337 | #ifndef PNG_NO_STDIO |
1338 | #ifdef _WIN32_WCE |
1339 | typedef HANDLE png_FILE_p; |
1340 | #else |
1341 | typedef FILE * png_FILE_p; |
1342 | #endif |
1343 | #endif |
1344 | |
1345 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
1346 | typedef double FAR * png_doublep; |
1347 | #endif |
1348 | |
1349 | /* Pointers to pointers; i.e. arrays */ |
1350 | typedef png_byte FAR * FAR * png_bytepp; |
1351 | typedef png_uint_32 FAR * FAR * png_uint_32pp; |
1352 | typedef png_int_32 FAR * FAR * png_int_32pp; |
1353 | typedef png_uint_16 FAR * FAR * png_uint_16pp; |
1354 | typedef png_int_16 FAR * FAR * png_int_16pp; |
1355 | typedef PNG_CONST char FAR * FAR * png_const_charpp; |
1356 | typedef char FAR * FAR * png_charpp; |
1357 | typedef png_fixed_point FAR * FAR * png_fixed_point_pp; |
1358 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
1359 | typedef double FAR * FAR * png_doublepp; |
1360 | #endif |
1361 | |
1362 | /* Pointers to pointers to pointers; i.e., pointer to array */ |
1363 | typedef 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 | */ |
1372 | typedef charf * png_zcharp; |
1373 | typedef charf * FAR * png_zcharpp; |
1374 | typedef 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 */ |
1678 | |