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view libs/libpng/pngconf.h @ 21:4ca4e3c5a754
port to C++ completed, shader programs now use the SdrProg class
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Thu, 11 Jun 2015 04:56:33 +0300 |
| parents | |
| children |
line source
2 /* pngconf.h - machine configurable file for libpng
3 *
4 * libpng version 1.2.33 - October 31, 2008
5 * For conditions of distribution and use, see copyright notice in png.h
6 * Copyright (c) 1998-2008 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 */
11 /* Any machine specific code is near the front of this file, so if you
12 * are configuring libpng for a machine, you may want to read the section
13 * starting here down to where it starts to typedef png_color, png_text,
14 * and png_info.
15 */
17 #ifndef PNGCONF_H
18 #define PNGCONF_H
20 #define PNG_1_2_X
22 /*
23 * PNG_USER_CONFIG has to be defined on the compiler command line. This
24 * includes the resource compiler for Windows DLL configurations.
25 */
26 #ifdef PNG_USER_CONFIG
27 # ifndef PNG_USER_PRIVATEBUILD
28 # define PNG_USER_PRIVATEBUILD
29 # endif
30 #include "pngusr.h"
31 #endif
33 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
34 #ifdef PNG_CONFIGURE_LIBPNG
35 #ifdef HAVE_CONFIG_H
36 #include "config.h"
37 #endif
38 #endif
40 /*
41 * Added at libpng-1.2.8
42 *
43 * If you create a private DLL you need to define in "pngusr.h" the followings:
44 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
45 * the DLL was built>
46 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
47 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
48 * distinguish your DLL from those of the official release. These
49 * correspond to the trailing letters that come after the version
50 * number and must match your private DLL name>
51 * e.g. // private DLL "libpng13gx.dll"
52 * #define PNG_USER_DLLFNAME_POSTFIX "gx"
53 *
54 * The following macros are also at your disposal if you want to complete the
55 * DLL VERSIONINFO structure.
56 * - PNG_USER_VERSIONINFO_COMMENTS
57 * - PNG_USER_VERSIONINFO_COMPANYNAME
58 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
59 */
61 #ifdef __STDC__
62 #ifdef SPECIALBUILD
63 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
64 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
65 #endif
67 #ifdef PRIVATEBUILD
68 # pragma message("PRIVATEBUILD is deprecated.\
69 Use PNG_USER_PRIVATEBUILD instead.")
70 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD
71 #endif
72 #endif /* __STDC__ */
74 #ifndef PNG_VERSION_INFO_ONLY
76 /* End of material added to libpng-1.2.8 */
78 /* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble
79 Restored at libpng-1.2.21 */
80 #if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \
81 !defined(PNG_WARN_UNINITIALIZED_ROW)
82 # define PNG_WARN_UNINITIALIZED_ROW 1
83 #endif
84 /* End of material added at libpng-1.2.19/1.2.21 */
86 /* This is the size of the compression buffer, and thus the size of
87 * an IDAT chunk. Make this whatever size you feel is best for your
88 * machine. One of these will be allocated per png_struct. When this
89 * is full, it writes the data to the disk, and does some other
90 * calculations. Making this an extremely small size will slow
91 * the library down, but you may want to experiment to determine
92 * where it becomes significant, if you are concerned with memory
93 * usage. Note that zlib allocates at least 32Kb also. For readers,
94 * this describes the size of the buffer available to read the data in.
95 * Unless this gets smaller than the size of a row (compressed),
96 * it should not make much difference how big this is.
97 */
99 #ifndef PNG_ZBUF_SIZE
100 # define PNG_ZBUF_SIZE 8192
101 #endif
103 /* Enable if you want a write-only libpng */
105 #ifndef PNG_NO_READ_SUPPORTED
106 # define PNG_READ_SUPPORTED
107 #endif
109 /* Enable if you want a read-only libpng */
111 #ifndef PNG_NO_WRITE_SUPPORTED
112 # define PNG_WRITE_SUPPORTED
113 #endif
115 /* Enabled by default in 1.2.0. You can disable this if you don't need to
116 support PNGs that are embedded in MNG datastreams */
117 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
118 # ifndef PNG_MNG_FEATURES_SUPPORTED
119 # define PNG_MNG_FEATURES_SUPPORTED
120 # endif
121 #endif
123 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
124 # ifndef PNG_FLOATING_POINT_SUPPORTED
125 # define PNG_FLOATING_POINT_SUPPORTED
126 # endif
127 #endif
129 /* If you are running on a machine where you cannot allocate more
130 * than 64K of memory at once, uncomment this. While libpng will not
131 * normally need that much memory in a chunk (unless you load up a very
132 * large file), zlib needs to know how big of a chunk it can use, and
133 * libpng thus makes sure to check any memory allocation to verify it
134 * will fit into memory.
135 #define PNG_MAX_MALLOC_64K
136 */
137 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
138 # define PNG_MAX_MALLOC_64K
139 #endif
141 /* Special munging to support doing things the 'cygwin' way:
142 * 'Normal' png-on-win32 defines/defaults:
143 * PNG_BUILD_DLL -- building dll
144 * PNG_USE_DLL -- building an application, linking to dll
145 * (no define) -- building static library, or building an
146 * application and linking to the static lib
147 * 'Cygwin' defines/defaults:
148 * PNG_BUILD_DLL -- (ignored) building the dll
149 * (no define) -- (ignored) building an application, linking to the dll
150 * PNG_STATIC -- (ignored) building the static lib, or building an
151 * application that links to the static lib.
152 * ALL_STATIC -- (ignored) building various static libs, or building an
153 * application that links to the static libs.
154 * Thus,
155 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
156 * this bit of #ifdefs will define the 'correct' config variables based on
157 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
158 * unnecessary.
159 *
160 * Also, the precedence order is:
161 * ALL_STATIC (since we can't #undef something outside our namespace)
162 * PNG_BUILD_DLL
163 * PNG_STATIC
164 * (nothing) == PNG_USE_DLL
165 *
166 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
167 * of auto-import in binutils, we no longer need to worry about
168 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
169 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
170 * to __declspec() stuff. However, we DO need to worry about
171 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
172 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
173 */
174 #if defined(__CYGWIN__)
175 # if defined(ALL_STATIC)
176 # if defined(PNG_BUILD_DLL)
177 # undef PNG_BUILD_DLL
178 # endif
179 # if defined(PNG_USE_DLL)
180 # undef PNG_USE_DLL
181 # endif
182 # if defined(PNG_DLL)
183 # undef PNG_DLL
184 # endif
185 # if !defined(PNG_STATIC)
186 # define PNG_STATIC
187 # endif
188 # else
189 # if defined (PNG_BUILD_DLL)
190 # if defined(PNG_STATIC)
191 # undef PNG_STATIC
192 # endif
193 # if defined(PNG_USE_DLL)
194 # undef PNG_USE_DLL
195 # endif
196 # if !defined(PNG_DLL)
197 # define PNG_DLL
198 # endif
199 # else
200 # if defined(PNG_STATIC)
201 # if defined(PNG_USE_DLL)
202 # undef PNG_USE_DLL
203 # endif
204 # if defined(PNG_DLL)
205 # undef PNG_DLL
206 # endif
207 # else
208 # if !defined(PNG_USE_DLL)
209 # define PNG_USE_DLL
210 # endif
211 # if !defined(PNG_DLL)
212 # define PNG_DLL
213 # endif
214 # endif
215 # endif
216 # endif
217 #endif
219 /* This protects us against compilers that run on a windowing system
220 * and thus don't have or would rather us not use the stdio types:
221 * stdin, stdout, and stderr. The only one currently used is stderr
222 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
223 * prevent these from being compiled and used. #defining PNG_NO_STDIO
224 * will also prevent these, plus will prevent the entire set of stdio
225 * macros and functions (FILE *, printf, etc.) from being compiled and used,
226 * unless (PNG_DEBUG > 0) has been #defined.
227 *
228 * #define PNG_NO_CONSOLE_IO
229 * #define PNG_NO_STDIO
230 */
232 #if defined(_WIN32_WCE)
233 # include <windows.h>
234 /* Console I/O functions are not supported on WindowsCE */
235 # define PNG_NO_CONSOLE_IO
236 # ifdef PNG_DEBUG
237 # undef PNG_DEBUG
238 # endif
239 #endif
241 #ifdef PNG_BUILD_DLL
242 # ifndef PNG_CONSOLE_IO_SUPPORTED
243 # ifndef PNG_NO_CONSOLE_IO
244 # define PNG_NO_CONSOLE_IO
245 # endif
246 # endif
247 #endif
249 # ifdef PNG_NO_STDIO
250 # ifndef PNG_NO_CONSOLE_IO
251 # define PNG_NO_CONSOLE_IO
252 # endif
253 # ifdef PNG_DEBUG
254 # if (PNG_DEBUG > 0)
255 # include <stdio.h>
256 # endif
257 # endif
258 # else
259 # if !defined(_WIN32_WCE)
260 /* "stdio.h" functions are not supported on WindowsCE */
261 # include <stdio.h>
262 # endif
263 # endif
265 /* This macro protects us against machines that don't have function
266 * prototypes (ie K&R style headers). If your compiler does not handle
267 * function prototypes, define this macro and use the included ansi2knr.
268 * I've always been able to use _NO_PROTO as the indicator, but you may
269 * need to drag the empty declaration out in front of here, or change the
270 * ifdef to suit your own needs.
271 */
272 #ifndef PNGARG
274 #ifdef OF /* zlib prototype munger */
275 # define PNGARG(arglist) OF(arglist)
276 #else
278 #ifdef _NO_PROTO
279 # define PNGARG(arglist) ()
280 # ifndef PNG_TYPECAST_NULL
281 # define PNG_TYPECAST_NULL
282 # endif
283 #else
284 # define PNGARG(arglist) arglist
285 #endif /* _NO_PROTO */
288 #endif /* OF */
290 #endif /* PNGARG */
292 /* Try to determine if we are compiling on a Mac. Note that testing for
293 * just __MWERKS__ is not good enough, because the Codewarrior is now used
294 * on non-Mac platforms.
295 */
296 #ifndef MACOS
297 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
298 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
299 # define MACOS
300 # endif
301 #endif
303 /* enough people need this for various reasons to include it here */
304 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
305 # include <sys/types.h>
306 #endif
308 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
309 # define PNG_SETJMP_SUPPORTED
310 #endif
312 #ifdef PNG_SETJMP_SUPPORTED
313 /* This is an attempt to force a single setjmp behaviour on Linux. If
314 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
315 */
317 # ifdef __linux__
318 # ifdef _BSD_SOURCE
319 # define PNG_SAVE_BSD_SOURCE
320 # undef _BSD_SOURCE
321 # endif
322 # ifdef _SETJMP_H
323 /* If you encounter a compiler error here, see the explanation
324 * near the end of INSTALL.
325 */
326 __pngconf.h__ already includes setjmp.h;
327 __dont__ include it again.;
328 # endif
329 # endif /* __linux__ */
331 /* include setjmp.h for error handling */
332 # include <setjmp.h>
334 # ifdef __linux__
335 # ifdef PNG_SAVE_BSD_SOURCE
336 # ifndef _BSD_SOURCE
337 # define _BSD_SOURCE
338 # endif
339 # undef PNG_SAVE_BSD_SOURCE
340 # endif
341 # endif /* __linux__ */
342 #endif /* PNG_SETJMP_SUPPORTED */
344 #ifdef BSD
345 # include <strings.h>
346 #else
347 # include <string.h>
348 #endif
350 /* Other defines for things like memory and the like can go here. */
351 #ifdef PNG_INTERNAL
353 #include <stdlib.h>
355 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
356 * aren't usually used outside the library (as far as I know), so it is
357 * debatable if they should be exported at all. In the future, when it is
358 * possible to have run-time registry of chunk-handling functions, some of
359 * these will be made available again.
360 #define PNG_EXTERN extern
361 */
362 #define PNG_EXTERN
364 /* Other defines specific to compilers can go here. Try to keep
365 * them inside an appropriate ifdef/endif pair for portability.
366 */
368 #if defined(PNG_FLOATING_POINT_SUPPORTED)
369 # if defined(MACOS)
370 /* We need to check that <math.h> hasn't already been included earlier
371 * as it seems it doesn't agree with <fp.h>, yet we should really use
372 * <fp.h> if possible.
373 */
374 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
375 # include <fp.h>
376 # endif
377 # else
378 # include <math.h>
379 # endif
380 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
381 /* Amiga SAS/C: We must include builtin FPU functions when compiling using
382 * MATH=68881
383 */
384 # include <m68881.h>
385 # endif
386 #endif
388 /* Codewarrior on NT has linking problems without this. */
389 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
390 # define PNG_ALWAYS_EXTERN
391 #endif
393 /* This provides the non-ANSI (far) memory allocation routines. */
394 #if defined(__TURBOC__) && defined(__MSDOS__)
395 # include <mem.h>
396 # include <alloc.h>
397 #endif
399 /* I have no idea why is this necessary... */
400 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
401 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
402 # include <malloc.h>
403 #endif
405 /* This controls how fine the dithering gets. As this allocates
406 * a largish chunk of memory (32K), those who are not as concerned
407 * with dithering quality can decrease some or all of these.
408 */
409 #ifndef PNG_DITHER_RED_BITS
410 # define PNG_DITHER_RED_BITS 5
411 #endif
412 #ifndef PNG_DITHER_GREEN_BITS
413 # define PNG_DITHER_GREEN_BITS 5
414 #endif
415 #ifndef PNG_DITHER_BLUE_BITS
416 # define PNG_DITHER_BLUE_BITS 5
417 #endif
419 /* This controls how fine the gamma correction becomes when you
420 * are only interested in 8 bits anyway. Increasing this value
421 * results in more memory being used, and more pow() functions
422 * being called to fill in the gamma tables. Don't set this value
423 * less then 8, and even that may not work (I haven't tested it).
424 */
426 #ifndef PNG_MAX_GAMMA_8
427 # define PNG_MAX_GAMMA_8 11
428 #endif
430 /* This controls how much a difference in gamma we can tolerate before
431 * we actually start doing gamma conversion.
432 */
433 #ifndef PNG_GAMMA_THRESHOLD
434 # define PNG_GAMMA_THRESHOLD 0.05
435 #endif
437 #endif /* PNG_INTERNAL */
439 /* The following uses const char * instead of char * for error
440 * and warning message functions, so some compilers won't complain.
441 * If you do not want to use const, define PNG_NO_CONST here.
442 */
444 #ifndef PNG_NO_CONST
445 # define PNG_CONST const
446 #else
447 # define PNG_CONST
448 #endif
450 /* The following defines give you the ability to remove code from the
451 * library that you will not be using. I wish I could figure out how to
452 * automate this, but I can't do that without making it seriously hard
453 * on the users. So if you are not using an ability, change the #define
454 * to and #undef, and that part of the library will not be compiled. If
455 * your linker can't find a function, you may want to make sure the
456 * ability is defined here. Some of these depend upon some others being
457 * defined. I haven't figured out all the interactions here, so you may
458 * have to experiment awhile to get everything to compile. If you are
459 * creating or using a shared library, you probably shouldn't touch this,
460 * as it will affect the size of the structures, and this will cause bad
461 * things to happen if the library and/or application ever change.
462 */
464 /* Any features you will not be using can be undef'ed here */
466 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
467 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
468 * on the compile line, then pick and choose which ones to define without
469 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
470 * if you only want to have a png-compliant reader/writer but don't need
471 * any of the extra transformations. This saves about 80 kbytes in a
472 * typical installation of the library. (PNG_NO_* form added in version
473 * 1.0.1c, for consistency)
474 */
476 /* The size of the png_text structure changed in libpng-1.0.6 when
477 * iTXt support was added. iTXt support was turned off by default through
478 * libpng-1.2.x, to support old apps that malloc the png_text structure
479 * instead of calling png_set_text() and letting libpng malloc it. It
480 * was turned on by default in libpng-1.3.0.
481 */
483 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
484 # ifndef PNG_NO_iTXt_SUPPORTED
485 # define PNG_NO_iTXt_SUPPORTED
486 # endif
487 # ifndef PNG_NO_READ_iTXt
488 # define PNG_NO_READ_iTXt
489 # endif
490 # ifndef PNG_NO_WRITE_iTXt
491 # define PNG_NO_WRITE_iTXt
492 # endif
493 #endif
495 #if !defined(PNG_NO_iTXt_SUPPORTED)
496 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
497 # define PNG_READ_iTXt
498 # endif
499 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
500 # define PNG_WRITE_iTXt
501 # endif
502 #endif
504 /* The following support, added after version 1.0.0, can be turned off here en
505 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
506 * with old applications that require the length of png_struct and png_info
507 * to remain unchanged.
508 */
510 #ifdef PNG_LEGACY_SUPPORTED
511 # define PNG_NO_FREE_ME
512 # define PNG_NO_READ_UNKNOWN_CHUNKS
513 # define PNG_NO_WRITE_UNKNOWN_CHUNKS
514 # define PNG_NO_READ_USER_CHUNKS
515 # define PNG_NO_READ_iCCP
516 # define PNG_NO_WRITE_iCCP
517 # define PNG_NO_READ_iTXt
518 # define PNG_NO_WRITE_iTXt
519 # define PNG_NO_READ_sCAL
520 # define PNG_NO_WRITE_sCAL
521 # define PNG_NO_READ_sPLT
522 # define PNG_NO_WRITE_sPLT
523 # define PNG_NO_INFO_IMAGE
524 # define PNG_NO_READ_RGB_TO_GRAY
525 # define PNG_NO_READ_USER_TRANSFORM
526 # define PNG_NO_WRITE_USER_TRANSFORM
527 # define PNG_NO_USER_MEM
528 # define PNG_NO_READ_EMPTY_PLTE
529 # define PNG_NO_MNG_FEATURES
530 # define PNG_NO_FIXED_POINT_SUPPORTED
531 #endif
533 /* Ignore attempt to turn off both floating and fixed point support */
534 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
535 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
536 # define PNG_FIXED_POINT_SUPPORTED
537 #endif
539 #ifndef PNG_NO_FREE_ME
540 # define PNG_FREE_ME_SUPPORTED
541 #endif
543 #if defined(PNG_READ_SUPPORTED)
545 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
546 !defined(PNG_NO_READ_TRANSFORMS)
547 # define PNG_READ_TRANSFORMS_SUPPORTED
548 #endif
550 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
551 # ifndef PNG_NO_READ_EXPAND
552 # define PNG_READ_EXPAND_SUPPORTED
553 # endif
554 # ifndef PNG_NO_READ_SHIFT
555 # define PNG_READ_SHIFT_SUPPORTED
556 # endif
557 # ifndef PNG_NO_READ_PACK
558 # define PNG_READ_PACK_SUPPORTED
559 # endif
560 # ifndef PNG_NO_READ_BGR
561 # define PNG_READ_BGR_SUPPORTED
562 # endif
563 # ifndef PNG_NO_READ_SWAP
564 # define PNG_READ_SWAP_SUPPORTED
565 # endif
566 # ifndef PNG_NO_READ_PACKSWAP
567 # define PNG_READ_PACKSWAP_SUPPORTED
568 # endif
569 # ifndef PNG_NO_READ_INVERT
570 # define PNG_READ_INVERT_SUPPORTED
571 # endif
572 # ifndef PNG_NO_READ_DITHER
573 # define PNG_READ_DITHER_SUPPORTED
574 # endif
575 # ifndef PNG_NO_READ_BACKGROUND
576 # define PNG_READ_BACKGROUND_SUPPORTED
577 # endif
578 # ifndef PNG_NO_READ_16_TO_8
579 # define PNG_READ_16_TO_8_SUPPORTED
580 # endif
581 # ifndef PNG_NO_READ_FILLER
582 # define PNG_READ_FILLER_SUPPORTED
583 # endif
584 # ifndef PNG_NO_READ_GAMMA
585 # define PNG_READ_GAMMA_SUPPORTED
586 # endif
587 # ifndef PNG_NO_READ_GRAY_TO_RGB
588 # define PNG_READ_GRAY_TO_RGB_SUPPORTED
589 # endif
590 # ifndef PNG_NO_READ_SWAP_ALPHA
591 # define PNG_READ_SWAP_ALPHA_SUPPORTED
592 # endif
593 # ifndef PNG_NO_READ_INVERT_ALPHA
594 # define PNG_READ_INVERT_ALPHA_SUPPORTED
595 # endif
596 # ifndef PNG_NO_READ_STRIP_ALPHA
597 # define PNG_READ_STRIP_ALPHA_SUPPORTED
598 # endif
599 # ifndef PNG_NO_READ_USER_TRANSFORM
600 # define PNG_READ_USER_TRANSFORM_SUPPORTED
601 # endif
602 # ifndef PNG_NO_READ_RGB_TO_GRAY
603 # define PNG_READ_RGB_TO_GRAY_SUPPORTED
604 # endif
605 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
607 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
608 !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive */
609 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
610 #endif /* about interlacing capability! You'll */
611 /* still have interlacing unless you change the following line: */
613 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
615 #ifndef PNG_NO_READ_COMPOSITE_NODIV
616 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
617 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
618 # endif
619 #endif
621 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
622 /* Deprecated, will be removed from version 2.0.0.
623 Use PNG_MNG_FEATURES_SUPPORTED instead. */
624 #ifndef PNG_NO_READ_EMPTY_PLTE
625 # define PNG_READ_EMPTY_PLTE_SUPPORTED
626 #endif
627 #endif
629 #endif /* PNG_READ_SUPPORTED */
631 #if defined(PNG_WRITE_SUPPORTED)
633 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
634 !defined(PNG_NO_WRITE_TRANSFORMS)
635 # define PNG_WRITE_TRANSFORMS_SUPPORTED
636 #endif
638 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
639 # ifndef PNG_NO_WRITE_SHIFT
640 # define PNG_WRITE_SHIFT_SUPPORTED
641 # endif
642 # ifndef PNG_NO_WRITE_PACK
643 # define PNG_WRITE_PACK_SUPPORTED
644 # endif
645 # ifndef PNG_NO_WRITE_BGR
646 # define PNG_WRITE_BGR_SUPPORTED
647 # endif
648 # ifndef PNG_NO_WRITE_SWAP
649 # define PNG_WRITE_SWAP_SUPPORTED
650 # endif
651 # ifndef PNG_NO_WRITE_PACKSWAP
652 # define PNG_WRITE_PACKSWAP_SUPPORTED
653 # endif
654 # ifndef PNG_NO_WRITE_INVERT
655 # define PNG_WRITE_INVERT_SUPPORTED
656 # endif
657 # ifndef PNG_NO_WRITE_FILLER
658 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
659 # endif
660 # ifndef PNG_NO_WRITE_SWAP_ALPHA
661 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED
662 # endif
663 # ifndef PNG_NO_WRITE_INVERT_ALPHA
664 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED
665 # endif
666 # ifndef PNG_NO_WRITE_USER_TRANSFORM
667 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED
668 # endif
669 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
671 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
672 !defined(PNG_WRITE_INTERLACING_SUPPORTED)
673 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
674 encoders, but can cause trouble
675 if left undefined */
676 #endif
678 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
679 !defined(PNG_WRITE_WEIGHTED_FILTER) && \
680 defined(PNG_FLOATING_POINT_SUPPORTED)
681 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
682 #endif
684 #ifndef PNG_NO_WRITE_FLUSH
685 # define PNG_WRITE_FLUSH_SUPPORTED
686 #endif
688 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
689 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
690 #ifndef PNG_NO_WRITE_EMPTY_PLTE
691 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED
692 #endif
693 #endif
695 #endif /* PNG_WRITE_SUPPORTED */
697 #ifndef PNG_1_0_X
698 # ifndef PNG_NO_ERROR_NUMBERS
699 # define PNG_ERROR_NUMBERS_SUPPORTED
700 # endif
701 #endif /* PNG_1_0_X */
703 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
704 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
705 # ifndef PNG_NO_USER_TRANSFORM_PTR
706 # define PNG_USER_TRANSFORM_PTR_SUPPORTED
707 # endif
708 #endif
710 #ifndef PNG_NO_STDIO
711 # define PNG_TIME_RFC1123_SUPPORTED
712 #endif
714 /* This adds extra functions in pngget.c for accessing data from the
715 * info pointer (added in version 0.99)
716 * png_get_image_width()
717 * png_get_image_height()
718 * png_get_bit_depth()
719 * png_get_color_type()
720 * png_get_compression_type()
721 * png_get_filter_type()
722 * png_get_interlace_type()
723 * png_get_pixel_aspect_ratio()
724 * png_get_pixels_per_meter()
725 * png_get_x_offset_pixels()
726 * png_get_y_offset_pixels()
727 * png_get_x_offset_microns()
728 * png_get_y_offset_microns()
729 */
730 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
731 # define PNG_EASY_ACCESS_SUPPORTED
732 #endif
734 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
735 * and removed from version 1.2.20. The following will be removed
736 * from libpng-1.4.0
737 */
739 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
740 # ifndef PNG_OPTIMIZED_CODE_SUPPORTED
741 # define PNG_OPTIMIZED_CODE_SUPPORTED
742 # endif
743 #endif
745 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
746 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED
747 # define PNG_ASSEMBLER_CODE_SUPPORTED
748 # endif
750 # if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
751 /* work around 64-bit gcc compiler bugs in gcc-3.x */
752 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
753 # define PNG_NO_MMX_CODE
754 # endif
755 # endif
757 # if defined(__APPLE__)
758 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
759 # define PNG_NO_MMX_CODE
760 # endif
761 # endif
763 # if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
764 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
765 # define PNG_NO_MMX_CODE
766 # endif
767 # endif
769 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
770 # define PNG_MMX_CODE_SUPPORTED
771 # endif
773 #endif
774 /* end of obsolete code to be removed from libpng-1.4.0 */
776 #if !defined(PNG_1_0_X)
777 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
778 # define PNG_USER_MEM_SUPPORTED
779 #endif
780 #endif /* PNG_1_0_X */
782 /* Added at libpng-1.2.6 */
783 #if !defined(PNG_1_0_X)
784 #ifndef PNG_SET_USER_LIMITS_SUPPORTED
785 #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
786 # define PNG_SET_USER_LIMITS_SUPPORTED
787 #endif
788 #endif
789 #endif /* PNG_1_0_X */
791 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
792 * how large, set these limits to 0x7fffffffL
793 */
794 #ifndef PNG_USER_WIDTH_MAX
795 # define PNG_USER_WIDTH_MAX 1000000L
796 #endif
797 #ifndef PNG_USER_HEIGHT_MAX
798 # define PNG_USER_HEIGHT_MAX 1000000L
799 #endif
801 /* These are currently experimental features, define them if you want */
803 /* very little testing */
804 /*
805 #ifdef PNG_READ_SUPPORTED
806 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
807 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
808 # endif
809 #endif
810 */
812 /* This is only for PowerPC big-endian and 680x0 systems */
813 /* some testing */
814 /*
815 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
816 # define PNG_READ_BIG_ENDIAN_SUPPORTED
817 #endif
818 */
820 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */
821 /*
822 #define PNG_NO_POINTER_INDEXING
823 */
825 /* These functions are turned off by default, as they will be phased out. */
826 /*
827 #define PNG_USELESS_TESTS_SUPPORTED
828 #define PNG_CORRECT_PALETTE_SUPPORTED
829 */
831 /* Any chunks you are not interested in, you can undef here. The
832 * ones that allocate memory may be expecially important (hIST,
833 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
834 * a bit smaller.
835 */
837 #if defined(PNG_READ_SUPPORTED) && \
838 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
839 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
840 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
841 #endif
843 #if defined(PNG_WRITE_SUPPORTED) && \
844 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
845 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
846 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
847 #endif
849 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
851 #ifdef PNG_NO_READ_TEXT
852 # define PNG_NO_READ_iTXt
853 # define PNG_NO_READ_tEXt
854 # define PNG_NO_READ_zTXt
855 #endif
856 #ifndef PNG_NO_READ_bKGD
857 # define PNG_READ_bKGD_SUPPORTED
858 # define PNG_bKGD_SUPPORTED
859 #endif
860 #ifndef PNG_NO_READ_cHRM
861 # define PNG_READ_cHRM_SUPPORTED
862 # define PNG_cHRM_SUPPORTED
863 #endif
864 #ifndef PNG_NO_READ_gAMA
865 # define PNG_READ_gAMA_SUPPORTED
866 # define PNG_gAMA_SUPPORTED
867 #endif
868 #ifndef PNG_NO_READ_hIST
869 # define PNG_READ_hIST_SUPPORTED
870 # define PNG_hIST_SUPPORTED
871 #endif
872 #ifndef PNG_NO_READ_iCCP
873 # define PNG_READ_iCCP_SUPPORTED
874 # define PNG_iCCP_SUPPORTED
875 #endif
876 #ifndef PNG_NO_READ_iTXt
877 # ifndef PNG_READ_iTXt_SUPPORTED
878 # define PNG_READ_iTXt_SUPPORTED
879 # endif
880 # ifndef PNG_iTXt_SUPPORTED
881 # define PNG_iTXt_SUPPORTED
882 # endif
883 #endif
884 #ifndef PNG_NO_READ_oFFs
885 # define PNG_READ_oFFs_SUPPORTED
886 # define PNG_oFFs_SUPPORTED
887 #endif
888 #ifndef PNG_NO_READ_pCAL
889 # define PNG_READ_pCAL_SUPPORTED
890 # define PNG_pCAL_SUPPORTED
891 #endif
892 #ifndef PNG_NO_READ_sCAL
893 # define PNG_READ_sCAL_SUPPORTED
894 # define PNG_sCAL_SUPPORTED
895 #endif
896 #ifndef PNG_NO_READ_pHYs
897 # define PNG_READ_pHYs_SUPPORTED
898 # define PNG_pHYs_SUPPORTED
899 #endif
900 #ifndef PNG_NO_READ_sBIT
901 # define PNG_READ_sBIT_SUPPORTED
902 # define PNG_sBIT_SUPPORTED
903 #endif
904 #ifndef PNG_NO_READ_sPLT
905 # define PNG_READ_sPLT_SUPPORTED
906 # define PNG_sPLT_SUPPORTED
907 #endif
908 #ifndef PNG_NO_READ_sRGB
909 # define PNG_READ_sRGB_SUPPORTED
910 # define PNG_sRGB_SUPPORTED
911 #endif
912 #ifndef PNG_NO_READ_tEXt
913 # define PNG_READ_tEXt_SUPPORTED
914 # define PNG_tEXt_SUPPORTED
915 #endif
916 #ifndef PNG_NO_READ_tIME
917 # define PNG_READ_tIME_SUPPORTED
918 # define PNG_tIME_SUPPORTED
919 #endif
920 #ifndef PNG_NO_READ_tRNS
921 # define PNG_READ_tRNS_SUPPORTED
922 # define PNG_tRNS_SUPPORTED
923 #endif
924 #ifndef PNG_NO_READ_zTXt
925 # define PNG_READ_zTXt_SUPPORTED
926 # define PNG_zTXt_SUPPORTED
927 #endif
928 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
929 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
930 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
931 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
932 # endif
933 # ifndef PNG_NO_HANDLE_AS_UNKNOWN
934 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
935 # endif
936 #endif
937 #if !defined(PNG_NO_READ_USER_CHUNKS) && \
938 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
939 # define PNG_READ_USER_CHUNKS_SUPPORTED
940 # define PNG_USER_CHUNKS_SUPPORTED
941 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS
942 # undef PNG_NO_READ_UNKNOWN_CHUNKS
943 # endif
944 # ifdef PNG_NO_HANDLE_AS_UNKNOWN
945 # undef PNG_NO_HANDLE_AS_UNKNOWN
946 # endif
947 #endif
948 #ifndef PNG_NO_READ_OPT_PLTE
949 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
950 #endif /* optional PLTE chunk in RGB and RGBA images */
951 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
952 defined(PNG_READ_zTXt_SUPPORTED)
953 # define PNG_READ_TEXT_SUPPORTED
954 # define PNG_TEXT_SUPPORTED
955 #endif
957 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
959 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
961 #ifdef PNG_NO_WRITE_TEXT
962 # define PNG_NO_WRITE_iTXt
963 # define PNG_NO_WRITE_tEXt
964 # define PNG_NO_WRITE_zTXt
965 #endif
966 #ifndef PNG_NO_WRITE_bKGD
967 # define PNG_WRITE_bKGD_SUPPORTED
968 # ifndef PNG_bKGD_SUPPORTED
969 # define PNG_bKGD_SUPPORTED
970 # endif
971 #endif
972 #ifndef PNG_NO_WRITE_cHRM
973 # define PNG_WRITE_cHRM_SUPPORTED
974 # ifndef PNG_cHRM_SUPPORTED
975 # define PNG_cHRM_SUPPORTED
976 # endif
977 #endif
978 #ifndef PNG_NO_WRITE_gAMA
979 # define PNG_WRITE_gAMA_SUPPORTED
980 # ifndef PNG_gAMA_SUPPORTED
981 # define PNG_gAMA_SUPPORTED
982 # endif
983 #endif
984 #ifndef PNG_NO_WRITE_hIST
985 # define PNG_WRITE_hIST_SUPPORTED
986 # ifndef PNG_hIST_SUPPORTED
987 # define PNG_hIST_SUPPORTED
988 # endif
989 #endif
990 #ifndef PNG_NO_WRITE_iCCP
991 # define PNG_WRITE_iCCP_SUPPORTED
992 # ifndef PNG_iCCP_SUPPORTED
993 # define PNG_iCCP_SUPPORTED
994 # endif
995 #endif
996 #ifndef PNG_NO_WRITE_iTXt
997 # ifndef PNG_WRITE_iTXt_SUPPORTED
998 # define PNG_WRITE_iTXt_SUPPORTED
999 # endif
1000 # ifndef PNG_iTXt_SUPPORTED
1001 # define PNG_iTXt_SUPPORTED
1002 # endif
1003 #endif
1004 #ifndef PNG_NO_WRITE_oFFs
1005 # define PNG_WRITE_oFFs_SUPPORTED
1006 # ifndef PNG_oFFs_SUPPORTED
1007 # define PNG_oFFs_SUPPORTED
1008 # endif
1009 #endif
1010 #ifndef PNG_NO_WRITE_pCAL
1011 # define PNG_WRITE_pCAL_SUPPORTED
1012 # ifndef PNG_pCAL_SUPPORTED
1013 # define PNG_pCAL_SUPPORTED
1014 # endif
1015 #endif
1016 #ifndef PNG_NO_WRITE_sCAL
1017 # define PNG_WRITE_sCAL_SUPPORTED
1018 # ifndef PNG_sCAL_SUPPORTED
1019 # define PNG_sCAL_SUPPORTED
1020 # endif
1021 #endif
1022 #ifndef PNG_NO_WRITE_pHYs
1023 # define PNG_WRITE_pHYs_SUPPORTED
1024 # ifndef PNG_pHYs_SUPPORTED
1025 # define PNG_pHYs_SUPPORTED
1026 # endif
1027 #endif
1028 #ifndef PNG_NO_WRITE_sBIT
1029 # define PNG_WRITE_sBIT_SUPPORTED
1030 # ifndef PNG_sBIT_SUPPORTED
1031 # define PNG_sBIT_SUPPORTED
1032 # endif
1033 #endif
1034 #ifndef PNG_NO_WRITE_sPLT
1035 # define PNG_WRITE_sPLT_SUPPORTED
1036 # ifndef PNG_sPLT_SUPPORTED
1037 # define PNG_sPLT_SUPPORTED
1038 # endif
1039 #endif
1040 #ifndef PNG_NO_WRITE_sRGB
1041 # define PNG_WRITE_sRGB_SUPPORTED
1042 # ifndef PNG_sRGB_SUPPORTED
1043 # define PNG_sRGB_SUPPORTED
1044 # endif
1045 #endif
1046 #ifndef PNG_NO_WRITE_tEXt
1047 # define PNG_WRITE_tEXt_SUPPORTED
1048 # ifndef PNG_tEXt_SUPPORTED
1049 # define PNG_tEXt_SUPPORTED
1050 # endif
1051 #endif
1052 #ifndef PNG_NO_WRITE_tIME
1053 # define PNG_WRITE_tIME_SUPPORTED
1054 # ifndef PNG_tIME_SUPPORTED
1055 # define PNG_tIME_SUPPORTED
1056 # endif
1057 #endif
1058 #ifndef PNG_NO_WRITE_tRNS
1059 # define PNG_WRITE_tRNS_SUPPORTED
1060 # ifndef PNG_tRNS_SUPPORTED
1061 # define PNG_tRNS_SUPPORTED
1062 # endif
1063 #endif
1064 #ifndef PNG_NO_WRITE_zTXt
1065 # define PNG_WRITE_zTXt_SUPPORTED
1066 # ifndef PNG_zTXt_SUPPORTED
1067 # define PNG_zTXt_SUPPORTED
1068 # endif
1069 #endif
1070 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1071 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1072 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1073 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
1074 # endif
1075 # ifndef PNG_NO_HANDLE_AS_UNKNOWN
1076 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1077 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1078 # endif
1079 # endif
1080 #endif
1081 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1082 defined(PNG_WRITE_zTXt_SUPPORTED)
1083 # define PNG_WRITE_TEXT_SUPPORTED
1084 # ifndef PNG_TEXT_SUPPORTED
1085 # define PNG_TEXT_SUPPORTED
1086 # endif
1087 #endif
1089 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1091 /* Turn this off to disable png_read_png() and
1092 * png_write_png() and leave the row_pointers member
1093 * out of the info structure.
1094 */
1095 #ifndef PNG_NO_INFO_IMAGE
1096 # define PNG_INFO_IMAGE_SUPPORTED
1097 #endif
1099 /* need the time information for reading tIME chunks */
1100 #if defined(PNG_tIME_SUPPORTED)
1101 # if !defined(_WIN32_WCE)
1102 /* "time.h" functions are not supported on WindowsCE */
1103 # include <time.h>
1104 # endif
1105 #endif
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
1112 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
1113 * want to have unsigned int for png_uint_32 instead of unsigned long.
1114 */
1116 typedef unsigned long png_uint_32;
1117 typedef long png_int_32;
1118 typedef unsigned short png_uint_16;
1119 typedef short png_int_16;
1120 typedef unsigned char png_byte;
1122 /* This is usually size_t. It is typedef'ed just in case you need it to
1123 change (I'm not sure if you will or not, so I thought I'd be safe) */
1124 #ifdef PNG_SIZE_T
1125 typedef PNG_SIZE_T png_size_t;
1126 # define png_sizeof(x) png_convert_size(sizeof(x))
1127 #else
1128 typedef size_t png_size_t;
1129 # define png_sizeof(x) sizeof(x)
1130 #endif
1132 /* The following is needed for medium model support. It cannot be in the
1133 * PNG_INTERNAL section. Needs modification for other compilers besides
1134 * MSC. Model independent support declares all arrays and pointers to be
1135 * large using the far keyword. The zlib version used must also support
1136 * model independent data. As of version zlib 1.0.4, the necessary changes
1137 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1138 * changes that are needed. (Tim Wegner)
1139 */
1141 /* Separate compiler dependencies (problem here is that zlib.h always
1142 defines FAR. (SJT) */
1143 #ifdef __BORLANDC__
1144 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1145 # define LDATA 1
1146 # else
1147 # define LDATA 0
1148 # endif
1149 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1150 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1151 # define PNG_MAX_MALLOC_64K
1152 # if (LDATA != 1)
1153 # ifndef FAR
1154 # define FAR __far
1155 # endif
1156 # define USE_FAR_KEYWORD
1157 # endif /* LDATA != 1 */
1158 /* Possibly useful for moving data out of default segment.
1159 * Uncomment it if you want. Could also define FARDATA as
1160 * const if your compiler supports it. (SJT)
1161 # define FARDATA FAR
1162 */
1163 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1164 #endif /* __BORLANDC__ */
1167 /* Suggest testing for specific compiler first before testing for
1168 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1169 * making reliance oncertain keywords suspect. (SJT)
1170 */
1172 /* MSC Medium model */
1173 #if defined(FAR)
1174 # if defined(M_I86MM)
1175 # define USE_FAR_KEYWORD
1176 # define FARDATA FAR
1177 # include <dos.h>
1178 # endif
1179 #endif
1181 /* SJT: default case */
1182 #ifndef FAR
1183 # define FAR
1184 #endif
1186 /* At this point FAR is always defined */
1187 #ifndef FARDATA
1188 # define FARDATA
1189 #endif
1191 /* Typedef for floating-point numbers that are converted
1192 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1193 typedef png_int_32 png_fixed_point;
1195 /* Add typedefs for pointers */
1196 typedef void FAR * png_voidp;
1197 typedef png_byte FAR * png_bytep;
1198 typedef png_uint_32 FAR * png_uint_32p;
1199 typedef png_int_32 FAR * png_int_32p;
1200 typedef png_uint_16 FAR * png_uint_16p;
1201 typedef png_int_16 FAR * png_int_16p;
1202 typedef PNG_CONST char FAR * png_const_charp;
1203 typedef char FAR * png_charp;
1204 typedef png_fixed_point FAR * png_fixed_point_p;
1206 #ifndef PNG_NO_STDIO
1207 #if defined(_WIN32_WCE)
1208 typedef HANDLE png_FILE_p;
1209 #else
1210 typedef FILE * png_FILE_p;
1211 #endif
1212 #endif
1214 #ifdef PNG_FLOATING_POINT_SUPPORTED
1215 typedef double FAR * png_doublep;
1216 #endif
1218 /* Pointers to pointers; i.e. arrays */
1219 typedef png_byte FAR * FAR * png_bytepp;
1220 typedef png_uint_32 FAR * FAR * png_uint_32pp;
1221 typedef png_int_32 FAR * FAR * png_int_32pp;
1222 typedef png_uint_16 FAR * FAR * png_uint_16pp;
1223 typedef png_int_16 FAR * FAR * png_int_16pp;
1224 typedef PNG_CONST char FAR * FAR * png_const_charpp;
1225 typedef char FAR * FAR * png_charpp;
1226 typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1227 #ifdef PNG_FLOATING_POINT_SUPPORTED
1228 typedef double FAR * FAR * png_doublepp;
1229 #endif
1231 /* Pointers to pointers to pointers; i.e., pointer to array */
1232 typedef char FAR * FAR * FAR * png_charppp;
1234 #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1235 /* SPC - Is this stuff deprecated? */
1236 /* It'll be removed as of libpng-1.3.0 - GR-P */
1237 /* libpng typedefs for types in zlib. If zlib changes
1238 * or another compression library is used, then change these.
1239 * Eliminates need to change all the source files.
1240 */
1241 typedef charf * png_zcharp;
1242 typedef charf * FAR * png_zcharpp;
1243 typedef z_stream FAR * png_zstreamp;
1244 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1246 /*
1247 * Define PNG_BUILD_DLL if the module being built is a Windows
1248 * LIBPNG DLL.
1249 *
1250 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1251 * It is equivalent to Microsoft predefined macro _DLL that is
1252 * automatically defined when you compile using the share
1253 * version of the CRT (C Run-Time library)
1254 *
1255 * The cygwin mods make this behavior a little different:
1256 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1257 * Define PNG_STATIC if you are building a static library for use with cygwin,
1258 * -or- if you are building an application that you want to link to the
1259 * static library.
1260 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1261 * the other flags is defined.
1262 */
1264 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1265 # define PNG_DLL
1266 #endif
1267 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1268 * When building a static lib, default to no GLOBAL ARRAYS, but allow
1269 * command-line override
1270 */
1271 #if defined(__CYGWIN__)
1272 # if !defined(PNG_STATIC)
1273 # if defined(PNG_USE_GLOBAL_ARRAYS)
1274 # undef PNG_USE_GLOBAL_ARRAYS
1275 # endif
1276 # if !defined(PNG_USE_LOCAL_ARRAYS)
1277 # define PNG_USE_LOCAL_ARRAYS
1278 # endif
1279 # else
1280 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
1281 # if defined(PNG_USE_GLOBAL_ARRAYS)
1282 # undef PNG_USE_GLOBAL_ARRAYS
1283 # endif
1284 # endif
1285 # endif
1286 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1287 # define PNG_USE_LOCAL_ARRAYS
1288 # endif
1289 #endif
1291 /* Do not use global arrays (helps with building DLL's)
1292 * They are no longer used in libpng itself, since version 1.0.5c,
1293 * but might be required for some pre-1.0.5c applications.
1294 */
1295 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1296 # if defined(PNG_NO_GLOBAL_ARRAYS) || \
1297 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
1298 # define PNG_USE_LOCAL_ARRAYS
1299 # else
1300 # define PNG_USE_GLOBAL_ARRAYS
1301 # endif
1302 #endif
1304 #if defined(__CYGWIN__)
1305 # undef PNGAPI
1306 # define PNGAPI __cdecl
1307 # undef PNG_IMPEXP
1308 # define PNG_IMPEXP
1309 #endif
1311 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1312 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1313 * Don't ignore those warnings; you must also reset the default calling
1314 * convention in your compiler to match your PNGAPI, and you must build
1315 * zlib and your applications the same way you build libpng.
1316 */
1318 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1319 # ifndef PNG_NO_MODULEDEF
1320 # define PNG_NO_MODULEDEF
1321 # endif
1322 #endif
1324 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1325 # define PNG_IMPEXP
1326 #endif
1328 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1329 (( defined(_Windows) || defined(_WINDOWS) || \
1330 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1332 # ifndef PNGAPI
1333 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1334 # define PNGAPI __cdecl
1335 # else
1336 # define PNGAPI _cdecl
1337 # endif
1338 # endif
1340 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1341 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1342 # define PNG_IMPEXP
1343 # endif
1345 # if !defined(PNG_IMPEXP)
1347 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1348 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1350 /* Borland/Microsoft */
1351 # if defined(_MSC_VER) || defined(__BORLANDC__)
1352 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1353 # define PNG_EXPORT PNG_EXPORT_TYPE1
1354 # else
1355 # define PNG_EXPORT PNG_EXPORT_TYPE2
1356 # if defined(PNG_BUILD_DLL)
1357 # define PNG_IMPEXP __export
1358 # else
1359 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
1360 VC++ */
1361 # endif /* Exists in Borland C++ for
1362 C++ classes (== huge) */
1363 # endif
1364 # endif
1366 # if !defined(PNG_IMPEXP)
1367 # if defined(PNG_BUILD_DLL)
1368 # define PNG_IMPEXP __declspec(dllexport)
1369 # else
1370 # define PNG_IMPEXP __declspec(dllimport)
1371 # endif
1372 # endif
1373 # endif /* PNG_IMPEXP */
1374 #else /* !(DLL || non-cygwin WINDOWS) */
1375 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1376 # ifndef PNGAPI
1377 # define PNGAPI _System
1378 # endif
1379 # else
1380 # if 0 /* ... other platforms, with other meanings */
1381 # endif
1382 # endif
1383 #endif
1385 #ifndef PNGAPI
1386 # define PNGAPI
1387 #endif
1388 #ifndef PNG_IMPEXP
1389 # define PNG_IMPEXP
1390 #endif
1392 #ifdef PNG_BUILDSYMS
1393 # ifndef PNG_EXPORT
1394 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1395 # endif
1396 # ifdef PNG_USE_GLOBAL_ARRAYS
1397 # ifndef PNG_EXPORT_VAR
1398 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1399 # endif
1400 # endif
1401 #endif
1403 #ifndef PNG_EXPORT
1404 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1405 #endif
1407 #ifdef PNG_USE_GLOBAL_ARRAYS
1408 # ifndef PNG_EXPORT_VAR
1409 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1410 # endif
1411 #endif
1413 /* User may want to use these so they are not in PNG_INTERNAL. Any library
1414 * functions that are passed far data must be model independent.
1415 */
1417 #ifndef PNG_ABORT
1418 # define PNG_ABORT() abort()
1419 #endif
1421 #ifdef PNG_SETJMP_SUPPORTED
1422 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1423 #else
1424 # define png_jmpbuf(png_ptr) \
1425 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1426 #endif
1428 #if defined(USE_FAR_KEYWORD) /* memory model independent fns */
1429 /* use this to make far-to-near assignments */
1430 # define CHECK 1
1431 # define NOCHECK 0
1432 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1433 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1434 # define png_snprintf _fsnprintf /* Added to v 1.2.19 */
1435 # define png_strlen _fstrlen
1436 # define png_memcmp _fmemcmp /* SJT: added */
1437 # define png_memcpy _fmemcpy
1438 # define png_memset _fmemset
1439 #else /* use the usual functions */
1440 # define CVT_PTR(ptr) (ptr)
1441 # define CVT_PTR_NOCHECK(ptr) (ptr)
1442 # ifndef PNG_NO_SNPRINTF
1443 # ifdef _MSC_VER
1444 # define png_snprintf _snprintf /* Added to v 1.2.19 */
1445 # define png_snprintf2 _snprintf
1446 # define png_snprintf6 _snprintf
1447 # else
1448 # define png_snprintf snprintf /* Added to v 1.2.19 */
1449 # define png_snprintf2 snprintf
1450 # define png_snprintf6 snprintf
1451 # endif
1452 # else
1453 /* You don't have or don't want to use snprintf(). Caution: Using
1454 * sprintf instead of snprintf exposes your application to accidental
1455 * or malevolent buffer overflows. If you don't have snprintf()
1456 * as a general rule you should provide one (you can get one from
1457 * Portable OpenSSH). */
1458 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1459 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1460 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1461 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1462 # endif
1463 # define png_strlen strlen
1464 # define png_memcmp memcmp /* SJT: added */
1465 # define png_memcpy memcpy
1466 # define png_memset memset
1467 #endif
1468 /* End of memory model independent support */
1470 /* Just a little check that someone hasn't tried to define something
1471 * contradictory.
1472 */
1473 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1474 # undef PNG_ZBUF_SIZE
1475 # define PNG_ZBUF_SIZE 65536L
1476 #endif
1478 /* Added at libpng-1.2.8 */
1479 #endif /* PNG_VERSION_INFO_ONLY */
1481 #endif /* PNGCONF_H */