1
2/* pngconf.h - machine configurable file for libpng
3 *
4 * libpng version 1.2.24 - December 14, 2007
5 * For conditions of distribution and use, see copyright notice in png.h
6 * Copyright (c) 1998-2007 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
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 */
16
17#ifndef PNGCONF_H
18#define PNGCONF_H
19
20#define PNG_1_2_X
21
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
32
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
39
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 */
60
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
66
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__ */
73
74#ifndef PNG_VERSION_INFO_ONLY
75
76/* End of material added to libpng-1.2.8 */
77
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 */
85
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 */
98
99#ifndef PNG_ZBUF_SIZE
100# define PNG_ZBUF_SIZE 8192
101#endif
102
103/* Enable if you want a write-only libpng */
104
105#ifndef PNG_NO_READ_SUPPORTED
106# define PNG_READ_SUPPORTED
107#endif
108
109/* Enable if you want a read-only libpng */
110
111#ifndef PNG_NO_WRITE_SUPPORTED
112# define PNG_WRITE_SUPPORTED
113#endif
114
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
122
123#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
124# ifndef PNG_FLOATING_POINT_SUPPORTED
125# define PNG_FLOATING_POINT_SUPPORTED
126# endif
127#endif
128
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
140
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
218
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 */
231
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
240
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
248
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
264
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
273
274#ifdef OF /* zlib prototype munger */
275# define PNGARG(arglist) OF(arglist)
276#else
277
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 */
286
287
288#endif /* OF */
289
290#endif /* PNGARG */
291
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
302
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
307
308#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
309# define PNG_SETJMP_SUPPORTED
310#endif
311
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 */
316
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__ */
330
331 /* include setjmp.h for error handling */
332# include <setjmp.h>
333
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 */
343
344#ifdef BSD
345# include <strings.h>
346#else
347# include <string.h>
348#endif
349
350/* Other defines for things like memory and the like can go here. */
351#ifdef PNG_INTERNAL
352
353#include <stdlib.h>
354
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
363
364/* Other defines specific to compilers can go here. Try to keep
365 * them inside an appropriate ifdef/endif pair for portability.
366 */
367
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
387
388/* Codewarrior on NT has linking problems without this. */
389#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
390# define PNG_ALWAYS_EXTERN
391#endif
392
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
398
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
404
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
418
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 */
425
426#ifndef PNG_MAX_GAMMA_8
427# define PNG_MAX_GAMMA_8 11
428#endif
429
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
436
437#endif /* PNG_INTERNAL */
438
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 */
443
444#ifndef PNG_NO_CONST
445# define PNG_CONST const
446#else
447# define PNG_CONST
448#endif
449
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 */
463
464/* Any features you will not be using can be undef'ed here */
465
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 */
475
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 */
482
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
494
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
503
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 */
509
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
532
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
538
539#ifndef PNG_NO_FREE_ME
540# define PNG_FREE_ME_SUPPORTED
541#endif
542
543#if defined(PNG_READ_SUPPORTED)
544
545#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
546 !defined(PNG_NO_READ_TRANSFORMS)
547# define PNG_READ_TRANSFORMS_SUPPORTED
548#endif
549
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 */
606
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: */
612
613#define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
614
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
620
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
628
629#endif /* PNG_READ_SUPPORTED */
630
631#if defined(PNG_WRITE_SUPPORTED)
632
633# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
634 !defined(PNG_NO_WRITE_TRANSFORMS)
635# define PNG_WRITE_TRANSFORMS_SUPPORTED
636#endif
637
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 */
670
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
677
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
683
684#ifndef PNG_NO_WRITE_FLUSH
685# define PNG_WRITE_FLUSH_SUPPORTED
686#endif
687
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
694
695#endif /* PNG_WRITE_SUPPORTED */
696
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 */
702
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
709
710#ifndef PNG_NO_STDIO
711# define PNG_TIME_RFC1123_SUPPORTED
712#endif
713
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
733
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*/
738
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
744
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
749
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
756
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
762
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
768
769# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
770# define PNG_MMX_CODE_SUPPORTED
771# endif
772
773#endif
774/* end of obsolete code to be removed from libpng-1.4.0 */
775
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 */
781
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 */
790
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
800
801/* These are currently experimental features, define them if you want */
802
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*/
811
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*/
819
820/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
821/*
822#define PNG_NO_POINTER_INDEXING
823*/
824
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*/
830
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 */
836
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
842
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
848
849#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
850
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
956
957#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
958
959#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
960
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
1088
1089#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1090
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
1098
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
1106
1107/* Some typedefs to get us started. These should be safe on most of the
1108 * common platforms. The typedefs should be at least as large as the
1109 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1110 * don't have to be exactly that size. Some compilers dislike passing
1111 * unsigned shorts as function parameters, so you may be better off using
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 */
1115
1116typedef unsigned long png_uint_32;
1117typedef long png_int_32;
1118typedef unsigned short png_uint_16;
1119typedef short png_int_16;
1120typedef unsigned char png_byte;
1121
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
1131
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 */
1140
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__ */
1165
1166
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 */
1171
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
1180
1181/* SJT: default case */
1182#ifndef FAR
1183# define FAR
1184#endif
1185
1186/* At this point FAR is always defined */
1187#ifndef FARDATA
1188# define FARDATA
1189#endif
1190
1191/* Typedef for floating-point numbers that are converted
1192 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1193typedef png_int_32 png_fixed_point;
1194
1195/* Add typedefs for pointers */
1196typedef void FAR * png_voidp;
1197typedef png_byte FAR * png_bytep;
1198typedef png_uint_32 FAR * png_uint_32p;
1199typedef png_int_32 FAR * png_int_32p;
1200typedef png_uint_16 FAR * png_uint_16p;
1201typedef png_int_16 FAR * png_int_16p;
1202typedef PNG_CONST char FAR * png_const_charp;
1203typedef char FAR * png_charp;
1204typedef png_fixed_point FAR * png_fixed_point_p;
1205
1206#ifndef PNG_NO_STDIO
1207#if defined(_WIN32_WCE)
1208typedef HANDLE png_FILE_p;
1209#else
1210typedef FILE * png_FILE_p;
1211#endif
1212#endif
1213
1214#ifdef PNG_FLOATING_POINT_SUPPORTED
1215typedef double FAR * png_doublep;
1216#endif
1217
1218/* Pointers to pointers; i.e. arrays */
1219typedef png_byte FAR * FAR * png_bytepp;
1220typedef png_uint_32 FAR * FAR * png_uint_32pp;
1221typedef png_int_32 FAR * FAR * png_int_32pp;
1222typedef png_uint_16 FAR * FAR * png_uint_16pp;
1223typedef png_int_16 FAR * FAR * png_int_16pp;
1224typedef PNG_CONST char FAR * FAR * png_const_charpp;
1225typedef char FAR * FAR * png_charpp;
1226typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1227#ifdef PNG_FLOATING_POINT_SUPPORTED
1228typedef double FAR * FAR * png_doublepp;
1229#endif
1230
1231/* Pointers to pointers to pointers; i.e., pointer to array */
1232typedef char FAR * FAR * FAR * png_charppp;
1233
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 */
1241typedef charf * png_zcharp;
1242typedef charf * FAR * png_zcharpp;
1243typedef z_stream FAR * png_zstreamp;
1244#endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1245
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 */
1263
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
1290
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
1303
1304#if defined(__CYGWIN__)
1305# undef PNGAPI
1306# define PNGAPI __cdecl
1307# undef PNG_IMPEXP
1308# define PNG_IMPEXP
1309#endif
1310
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 */
1317
1318#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1319# ifndef PNG_NO_MODULEDEF
1320# define PNG_NO_MODULEDEF
1321# endif
1322#endif
1323
1324#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1325# define PNG_IMPEXP
1326#endif
1327
1328#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1329 (( defined(_Windows) || defined(_WINDOWS) || \
1330 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1331
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
1339
1340# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1341 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1342# define PNG_IMPEXP
1343# endif
1344
1345# if !defined(PNG_IMPEXP)
1346
1347# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1348# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1349
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
1365
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
1384
1385#ifndef PNGAPI
1386# define PNGAPI
1387#endif
1388#ifndef PNG_IMPEXP
1389# define PNG_IMPEXP
1390#endif
1391
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
1402
1403#ifndef PNG_EXPORT
1404# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1405#endif
1406
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
1412
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 */
1416
1417#ifndef PNG_ABORT
1418# define PNG_ABORT() abort()
1419#endif
1420
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
1427
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 */
1469
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
1477
1478/* Added at libpng-1.2.8 */
1479#endif /* PNG_VERSION_INFO_ONLY */
1480
1481#endif /* PNGCONF_H */
1482