source: bootcd/isolinux/syslinux-6.03/com32/include/pngconf.h @ dd1be7c

Last change on this file since dd1be7c was e16e8f2, checked in by Edwin Eefting <edwin@datux.nl>, 3 years ago

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[e16e8f2]1
2/* pngconf.h - machine configurable file for libpng
3 *
4 * libpng version 1.2.44 - June 26, 2010
5 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
8 *
9 * This code is released under the libpng license.
10 * For conditions of distribution and use, see the disclaimer
11 * and license in png.h
12 */
13
14/* Any machine specific code is near the front of this file, so if you
15 * are configuring libpng for a machine, you may want to read the section
16 * starting here down to where it starts to typedef png_color, png_text,
17 * and png_info.
18 */
19
20#ifndef PNGCONF_H
21#define PNGCONF_H
22
23#define PNG_1_2_X
24
25/*
26 * PNG_USER_CONFIG has to be defined on the compiler command line. This
27 * includes the resource compiler for Windows DLL configurations.
28 */
29#ifdef PNG_USER_CONFIG
30#  ifndef PNG_USER_PRIVATEBUILD
31#    define PNG_USER_PRIVATEBUILD
32#  endif
33#include "pngusr.h"
34#endif
35
36/* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
37#ifdef PNG_CONFIGURE_LIBPNG
38#ifdef HAVE_CONFIG_H
39#include "config.h"
40#endif
41#endif
42
43/*
44 * Added at libpng-1.2.8
45 *
46 * If you create a private DLL you need to define in "pngusr.h" the followings:
47 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
48 *        the DLL was built>
49 *  e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
50 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
51 *        distinguish your DLL from those of the official release. These
52 *        correspond to the trailing letters that come after the version
53 *        number and must match your private DLL name>
54 *  e.g. // private DLL "libpng13gx.dll"
55 *       #define PNG_USER_DLLFNAME_POSTFIX "gx"
56 *
57 * The following macros are also at your disposal if you want to complete the
58 * DLL VERSIONINFO structure.
59 * - PNG_USER_VERSIONINFO_COMMENTS
60 * - PNG_USER_VERSIONINFO_COMPANYNAME
61 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
62 */
63
64#ifdef __STDC__
65#ifdef SPECIALBUILD
66#  pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
67 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
68#endif
69
70#ifdef PRIVATEBUILD
71# pragma message("PRIVATEBUILD is deprecated.\
72 Use PNG_USER_PRIVATEBUILD instead.")
73# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
74#endif
75#endif /* __STDC__ */
76
77#ifndef PNG_VERSION_INFO_ONLY
78
79/* End of material added to libpng-1.2.8 */
80
81/* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble
82   Restored at libpng-1.2.21 */
83#if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \
84    !defined(PNG_WARN_UNINITIALIZED_ROW)
85#  define PNG_WARN_UNINITIALIZED_ROW 1
86#endif
87/* End of material added at libpng-1.2.19/1.2.21 */
88
89/* This is the size of the compression buffer, and thus the size of
90 * an IDAT chunk.  Make this whatever size you feel is best for your
91 * machine.  One of these will be allocated per png_struct.  When this
92 * is full, it writes the data to the disk, and does some other
93 * calculations.  Making this an extremely small size will slow
94 * the library down, but you may want to experiment to determine
95 * where it becomes significant, if you are concerned with memory
96 * usage.  Note that zlib allocates at least 32Kb also.  For readers,
97 * this describes the size of the buffer available to read the data in.
98 * Unless this gets smaller than the size of a row (compressed),
99 * it should not make much difference how big this is.
100 */
101
102#ifndef PNG_ZBUF_SIZE
103#  define PNG_ZBUF_SIZE 8192
104#endif
105
106/* Enable if you want a write-only libpng */
107
108#ifndef PNG_NO_READ_SUPPORTED
109#  define PNG_READ_SUPPORTED
110#endif
111
112/* Enable if you want a read-only libpng */
113
114#ifndef PNG_NO_WRITE_SUPPORTED
115#  define PNG_WRITE_SUPPORTED
116#endif
117
118/* Enabled in 1.2.41. */
119#ifdef PNG_ALLOW_BENIGN_ERRORS
120#  define png_benign_error png_warning
121#  define png_chunk_benign_error png_chunk_warning
122#else
123#  ifndef PNG_BENIGN_ERRORS_SUPPORTED
124#    define png_benign_error png_error
125#    define png_chunk_benign_error png_chunk_error
126#  endif
127#endif
128
129/* Added in libpng-1.2.41 */
130#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
131#  define PNG_WARNINGS_SUPPORTED
132#endif
133
134#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
135#  define PNG_ERROR_TEXT_SUPPORTED
136#endif
137
138#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
139#  define PNG_CHECK_cHRM_SUPPORTED
140#endif
141
142/* Enabled by default in 1.2.0.  You can disable this if you don't need to
143 * support PNGs that are embedded in MNG datastreams
144 */
145#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
146#  ifndef PNG_MNG_FEATURES_SUPPORTED
147#    define PNG_MNG_FEATURES_SUPPORTED
148#  endif
149#endif
150
151#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
152#  ifndef PNG_FLOATING_POINT_SUPPORTED
153#    define PNG_FLOATING_POINT_SUPPORTED
154#  endif
155#endif
156
157/* If you are running on a machine where you cannot allocate more
158 * than 64K of memory at once, uncomment this.  While libpng will not
159 * normally need that much memory in a chunk (unless you load up a very
160 * large file), zlib needs to know how big of a chunk it can use, and
161 * libpng thus makes sure to check any memory allocation to verify it
162 * will fit into memory.
163#define PNG_MAX_MALLOC_64K
164 */
165#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
166#  define PNG_MAX_MALLOC_64K
167#endif
168
169/* Special munging to support doing things the 'cygwin' way:
170 * 'Normal' png-on-win32 defines/defaults:
171 *   PNG_BUILD_DLL -- building dll
172 *   PNG_USE_DLL   -- building an application, linking to dll
173 *   (no define)   -- building static library, or building an
174 *                    application and linking to the static lib
175 * 'Cygwin' defines/defaults:
176 *   PNG_BUILD_DLL -- (ignored) building the dll
177 *   (no define)   -- (ignored) building an application, linking to the dll
178 *   PNG_STATIC    -- (ignored) building the static lib, or building an
179 *                    application that links to the static lib.
180 *   ALL_STATIC    -- (ignored) building various static libs, or building an
181 *                    application that links to the static libs.
182 * Thus,
183 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
184 * this bit of #ifdefs will define the 'correct' config variables based on
185 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
186 * unnecessary.
187 *
188 * Also, the precedence order is:
189 *   ALL_STATIC (since we can't #undef something outside our namespace)
190 *   PNG_BUILD_DLL
191 *   PNG_STATIC
192 *   (nothing) == PNG_USE_DLL
193 *
194 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
195 *   of auto-import in binutils, we no longer need to worry about
196 *   __declspec(dllexport) / __declspec(dllimport) and friends.  Therefore,
197 *   we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
198 *   to __declspec() stuff.  However, we DO need to worry about
199 *   PNG_BUILD_DLL and PNG_STATIC because those change some defaults
200 *   such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
201 */
202#ifdef __CYGWIN__
203#  ifdef ALL_STATIC
204#    ifdef PNG_BUILD_DLL
205#      undef PNG_BUILD_DLL
206#    endif
207#    ifdef PNG_USE_DLL
208#      undef PNG_USE_DLL
209#    endif
210#    ifdef PNG_DLL
211#      undef PNG_DLL
212#    endif
213#    ifndef PNG_STATIC
214#      define PNG_STATIC
215#    endif
216#  else
217#    ifdef PNG_BUILD_DLL
218#      ifdef PNG_STATIC
219#        undef PNG_STATIC
220#      endif
221#      ifdef PNG_USE_DLL
222#        undef PNG_USE_DLL
223#      endif
224#      ifndef PNG_DLL
225#        define PNG_DLL
226#      endif
227#    else
228#      ifdef PNG_STATIC
229#        ifdef PNG_USE_DLL
230#          undef PNG_USE_DLL
231#        endif
232#        ifdef PNG_DLL
233#          undef PNG_DLL
234#        endif
235#      else
236#        ifndef PNG_USE_DLL
237#          define PNG_USE_DLL
238#        endif
239#        ifndef PNG_DLL
240#          define PNG_DLL
241#        endif
242#      endif
243#    endif
244#  endif
245#endif
246
247/* This protects us against compilers that run on a windowing system
248 * and thus don't have or would rather us not use the stdio types:
249 * stdin, stdout, and stderr.  The only one currently used is stderr
250 * in png_error() and png_warning().  #defining PNG_NO_CONSOLE_IO will
251 * prevent these from being compiled and used. #defining PNG_NO_STDIO
252 * will also prevent these, plus will prevent the entire set of stdio
253 * macros and functions (FILE *, printf, etc.) from being compiled and used,
254 * unless (PNG_DEBUG > 0) has been #defined.
255 *
256 * #define PNG_NO_CONSOLE_IO
257 * #define PNG_NO_STDIO
258 */
259
260#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
261#  define PNG_STDIO_SUPPORTED
262#endif
263
264#ifdef _WIN32_WCE
265#  include <windows.h>
266   /* Console I/O functions are not supported on WindowsCE */
267#  define PNG_NO_CONSOLE_IO
268   /* abort() may not be supported on some/all Windows CE platforms */
269#  define PNG_ABORT() exit(-1)
270#  ifdef PNG_DEBUG
271#    undef PNG_DEBUG
272#  endif
273#endif
274
275#ifdef PNG_BUILD_DLL
276#  ifndef PNG_CONSOLE_IO_SUPPORTED
277#    ifndef PNG_NO_CONSOLE_IO
278#      define PNG_NO_CONSOLE_IO
279#    endif
280#  endif
281#endif
282
283#  ifdef PNG_NO_STDIO
284#    ifndef PNG_NO_CONSOLE_IO
285#      define PNG_NO_CONSOLE_IO
286#    endif
287#    ifdef PNG_DEBUG
288#      if (PNG_DEBUG > 0)
289#        include <stdio.h>
290#      endif
291#    endif
292#  else
293#    ifndef _WIN32_WCE
294/* "stdio.h" functions are not supported on WindowsCE */
295#      include <stdio.h>
296#    endif
297#  endif
298
299#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
300#  define PNG_CONSOLE_IO_SUPPORTED
301#endif
302
303/* This macro protects us against machines that don't have function
304 * prototypes (ie K&R style headers).  If your compiler does not handle
305 * function prototypes, define this macro and use the included ansi2knr.
306 * I've always been able to use _NO_PROTO as the indicator, but you may
307 * need to drag the empty declaration out in front of here, or change the
308 * ifdef to suit your own needs.
309 */
310#ifndef PNGARG
311
312#ifdef OF /* zlib prototype munger */
313#  define PNGARG(arglist) OF(arglist)
314#else
315
316#ifdef _NO_PROTO
317#  define PNGARG(arglist) ()
318#  ifndef PNG_TYPECAST_NULL
319#     define PNG_TYPECAST_NULL
320#  endif
321#else
322#  define PNGARG(arglist) arglist
323#endif /* _NO_PROTO */
324
325
326#endif /* OF */
327
328#endif /* PNGARG */
329
330/* Try to determine if we are compiling on a Mac.  Note that testing for
331 * just __MWERKS__ is not good enough, because the Codewarrior is now used
332 * on non-Mac platforms.
333 */
334#ifndef MACOS
335#  if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
336      defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
337#    define MACOS
338#  endif
339#endif
340
341/* enough people need this for various reasons to include it here */
342#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
343#  include <sys/types.h>
344#endif
345
346#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
347#  define PNG_SETJMP_SUPPORTED
348#endif
349
350#ifdef PNG_SETJMP_SUPPORTED
351/* This is an attempt to force a single setjmp behaviour on Linux.  If
352 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
353 *
354 * You can bypass this test if you know that your application uses exactly
355 * the same setjmp.h that was included when libpng was built.  Only define
356 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
357 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
358 * while building a separate libpng library for general use.
359 */
360
361#  ifndef PNG_SKIP_SETJMP_CHECK
362#    ifdef __linux__
363#      ifdef _BSD_SOURCE
364#        define PNG_SAVE_BSD_SOURCE
365#        undef _BSD_SOURCE
366#      endif
367#      ifdef _SETJMP_H
368       /* If you encounter a compiler error here, see the explanation
369        * near the end of INSTALL.
370        */
371           __pngconf.h__ in libpng already includes setjmp.h;
372           __dont__ include it again.;
373#      endif
374#    endif /* __linux__ */
375#  endif /* PNG_SKIP_SETJMP_CHECK */
376
377   /* include setjmp.h for error handling */
378#  include <setjmp.h>
379
380#  ifdef __linux__
381#    ifdef PNG_SAVE_BSD_SOURCE
382#      ifndef _BSD_SOURCE
383#        define _BSD_SOURCE
384#      endif
385#      undef PNG_SAVE_BSD_SOURCE
386#    endif
387#  endif /* __linux__ */
388#endif /* PNG_SETJMP_SUPPORTED */
389
390#ifdef BSD
391#  include <strings.h>
392#else
393#  include <string.h>
394#endif
395
396/* Other defines for things like memory and the like can go here.  */
397#ifdef PNG_INTERNAL
398
399#include <stdlib.h>
400
401/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
402 * aren't usually used outside the library (as far as I know), so it is
403 * debatable if they should be exported at all.  In the future, when it is
404 * possible to have run-time registry of chunk-handling functions, some of
405 * these will be made available again.
406#define PNG_EXTERN extern
407 */
408#define PNG_EXTERN
409
410/* Other defines specific to compilers can go here.  Try to keep
411 * them inside an appropriate ifdef/endif pair for portability.
412 */
413
414#ifdef PNG_FLOATING_POINT_SUPPORTED
415#  ifdef MACOS
416     /* We need to check that <math.h> hasn't already been included earlier
417      * as it seems it doesn't agree with <fp.h>, yet we should really use
418      * <fp.h> if possible.
419      */
420#    if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
421#      include <fp.h>
422#    endif
423#  else
424#    include <math.h>
425#  endif
426#  if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
427     /* Amiga SAS/C: We must include builtin FPU functions when compiling using
428      * MATH=68881
429      */
430#    include <m68881.h>
431#  endif
432#endif
433
434/* Codewarrior on NT has linking problems without this. */
435#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
436#  define PNG_ALWAYS_EXTERN
437#endif
438
439/* This provides the non-ANSI (far) memory allocation routines. */
440#if defined(__TURBOC__) && defined(__MSDOS__)
441#  include <mem.h>
442#  include <alloc.h>
443#endif
444
445/* I have no idea why is this necessary... */
446#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
447    defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
448#  include <malloc.h>
449#endif
450
451/* This controls how fine the dithering gets.  As this allocates
452 * a largish chunk of memory (32K), those who are not as concerned
453 * with dithering quality can decrease some or all of these.
454 */
455#ifndef PNG_DITHER_RED_BITS
456#  define PNG_DITHER_RED_BITS 5
457#endif
458#ifndef PNG_DITHER_GREEN_BITS
459#  define PNG_DITHER_GREEN_BITS 5
460#endif
461#ifndef PNG_DITHER_BLUE_BITS
462#  define PNG_DITHER_BLUE_BITS 5
463#endif
464
465/* This controls how fine the gamma correction becomes when you
466 * are only interested in 8 bits anyway.  Increasing this value
467 * results in more memory being used, and more pow() functions
468 * being called to fill in the gamma tables.  Don't set this value
469 * less then 8, and even that may not work (I haven't tested it).
470 */
471
472#ifndef PNG_MAX_GAMMA_8
473#  define PNG_MAX_GAMMA_8 11
474#endif
475
476/* This controls how much a difference in gamma we can tolerate before
477 * we actually start doing gamma conversion.
478 */
479#ifndef PNG_GAMMA_THRESHOLD
480#  define PNG_GAMMA_THRESHOLD 0.05
481#endif
482
483#endif /* PNG_INTERNAL */
484
485/* The following uses const char * instead of char * for error
486 * and warning message functions, so some compilers won't complain.
487 * If you do not want to use const, define PNG_NO_CONST here.
488 */
489
490#ifndef PNG_NO_CONST
491#  define PNG_CONST const
492#else
493#  define PNG_CONST
494#endif
495
496/* The following defines give you the ability to remove code from the
497 * library that you will not be using.  I wish I could figure out how to
498 * automate this, but I can't do that without making it seriously hard
499 * on the users.  So if you are not using an ability, change the #define
500 * to and #undef, and that part of the library will not be compiled.  If
501 * your linker can't find a function, you may want to make sure the
502 * ability is defined here.  Some of these depend upon some others being
503 * defined.  I haven't figured out all the interactions here, so you may
504 * have to experiment awhile to get everything to compile.  If you are
505 * creating or using a shared library, you probably shouldn't touch this,
506 * as it will affect the size of the structures, and this will cause bad
507 * things to happen if the library and/or application ever change.
508 */
509
510/* Any features you will not be using can be undef'ed here */
511
512/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
513 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
514 * on the compile line, then pick and choose which ones to define without
515 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
516 * if you only want to have a png-compliant reader/writer but don't need
517 * any of the extra transformations.  This saves about 80 kbytes in a
518 * typical installation of the library. (PNG_NO_* form added in version
519 * 1.0.1c, for consistency)
520 */
521
522/* The size of the png_text structure changed in libpng-1.0.6 when
523 * iTXt support was added.  iTXt support was turned off by default through
524 * libpng-1.2.x, to support old apps that malloc the png_text structure
525 * instead of calling png_set_text() and letting libpng malloc it.  It
526 * will be turned on by default in libpng-1.4.0.
527 */
528
529#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
530#  ifndef PNG_NO_iTXt_SUPPORTED
531#    define PNG_NO_iTXt_SUPPORTED
532#  endif
533#  ifndef PNG_NO_READ_iTXt
534#    define PNG_NO_READ_iTXt
535#  endif
536#  ifndef PNG_NO_WRITE_iTXt
537#    define PNG_NO_WRITE_iTXt
538#  endif
539#endif
540
541#if !defined(PNG_NO_iTXt_SUPPORTED)
542#  if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
543#    define PNG_READ_iTXt
544#  endif
545#  if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
546#    define PNG_WRITE_iTXt
547#  endif
548#endif
549
550/* The following support, added after version 1.0.0, can be turned off here en
551 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
552 * with old applications that require the length of png_struct and png_info
553 * to remain unchanged.
554 */
555
556#ifdef PNG_LEGACY_SUPPORTED
557#  define PNG_NO_FREE_ME
558#  define PNG_NO_READ_UNKNOWN_CHUNKS
559#  define PNG_NO_WRITE_UNKNOWN_CHUNKS
560#  define PNG_NO_HANDLE_AS_UNKNOWN
561#  define PNG_NO_READ_USER_CHUNKS
562#  define PNG_NO_READ_iCCP
563#  define PNG_NO_WRITE_iCCP
564#  define PNG_NO_READ_iTXt
565#  define PNG_NO_WRITE_iTXt
566#  define PNG_NO_READ_sCAL
567#  define PNG_NO_WRITE_sCAL
568#  define PNG_NO_READ_sPLT
569#  define PNG_NO_WRITE_sPLT
570#  define PNG_NO_INFO_IMAGE
571#  define PNG_NO_READ_RGB_TO_GRAY
572#  define PNG_NO_READ_USER_TRANSFORM
573#  define PNG_NO_WRITE_USER_TRANSFORM
574#  define PNG_NO_USER_MEM
575#  define PNG_NO_READ_EMPTY_PLTE
576#  define PNG_NO_MNG_FEATURES
577#  define PNG_NO_FIXED_POINT_SUPPORTED
578#endif
579
580/* Ignore attempt to turn off both floating and fixed point support */
581#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
582    !defined(PNG_NO_FIXED_POINT_SUPPORTED)
583#  define PNG_FIXED_POINT_SUPPORTED
584#endif
585
586#ifndef PNG_NO_FREE_ME
587#  define PNG_FREE_ME_SUPPORTED
588#endif
589
590#ifdef PNG_READ_SUPPORTED
591
592#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
593      !defined(PNG_NO_READ_TRANSFORMS)
594#  define PNG_READ_TRANSFORMS_SUPPORTED
595#endif
596
597#ifdef PNG_READ_TRANSFORMS_SUPPORTED
598#  ifndef PNG_NO_READ_EXPAND
599#    define PNG_READ_EXPAND_SUPPORTED
600#  endif
601#  ifndef PNG_NO_READ_SHIFT
602#    define PNG_READ_SHIFT_SUPPORTED
603#  endif
604#  ifndef PNG_NO_READ_PACK
605#    define PNG_READ_PACK_SUPPORTED
606#  endif
607#  ifndef PNG_NO_READ_BGR
608#    define PNG_READ_BGR_SUPPORTED
609#  endif
610#  ifndef PNG_NO_READ_SWAP
611#    define PNG_READ_SWAP_SUPPORTED
612#  endif
613#  ifndef PNG_NO_READ_PACKSWAP
614#    define PNG_READ_PACKSWAP_SUPPORTED
615#  endif
616#  ifndef PNG_NO_READ_INVERT
617#    define PNG_READ_INVERT_SUPPORTED
618#  endif
619#  ifndef PNG_NO_READ_DITHER
620#    define PNG_READ_DITHER_SUPPORTED
621#  endif
622#  ifndef PNG_NO_READ_BACKGROUND
623#    define PNG_READ_BACKGROUND_SUPPORTED
624#  endif
625#  ifndef PNG_NO_READ_16_TO_8
626#    define PNG_READ_16_TO_8_SUPPORTED
627#  endif
628#  ifndef PNG_NO_READ_FILLER
629#    define PNG_READ_FILLER_SUPPORTED
630#  endif
631#  ifndef PNG_NO_READ_GAMMA
632#    define PNG_READ_GAMMA_SUPPORTED
633#  endif
634#  ifndef PNG_NO_READ_GRAY_TO_RGB
635#    define PNG_READ_GRAY_TO_RGB_SUPPORTED
636#  endif
637#  ifndef PNG_NO_READ_SWAP_ALPHA
638#    define PNG_READ_SWAP_ALPHA_SUPPORTED
639#  endif
640#  ifndef PNG_NO_READ_INVERT_ALPHA
641#    define PNG_READ_INVERT_ALPHA_SUPPORTED
642#  endif
643#  ifndef PNG_NO_READ_STRIP_ALPHA
644#    define PNG_READ_STRIP_ALPHA_SUPPORTED
645#  endif
646#  ifndef PNG_NO_READ_USER_TRANSFORM
647#    define PNG_READ_USER_TRANSFORM_SUPPORTED
648#  endif
649#  ifndef PNG_NO_READ_RGB_TO_GRAY
650#    define PNG_READ_RGB_TO_GRAY_SUPPORTED
651#  endif
652#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
653
654/* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
655#if !defined(PNG_NO_PROGRESSIVE_READ) && \
656 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED)  /* if you don't do progressive */
657#  define PNG_PROGRESSIVE_READ_SUPPORTED     /* reading.  This is not talking */
658#endif                               /* about interlacing capability!  You'll */
659            /* still have interlacing unless you change the following define: */
660#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
661
662/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
663#if !defined(PNG_NO_SEQUENTIAL_READ) && \
664    !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
665    !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
666#  define PNG_SEQUENTIAL_READ_SUPPORTED
667#endif
668
669#define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
670
671#ifndef PNG_NO_READ_COMPOSITE_NODIV
672#  ifndef PNG_NO_READ_COMPOSITED_NODIV  /* libpng-1.0.x misspelling */
673#    define PNG_READ_COMPOSITE_NODIV_SUPPORTED  /* well tested on Intel, SGI */
674#  endif
675#endif
676
677#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
678/* Deprecated, will be removed from version 2.0.0.
679   Use PNG_MNG_FEATURES_SUPPORTED instead. */
680#ifndef PNG_NO_READ_EMPTY_PLTE
681#  define PNG_READ_EMPTY_PLTE_SUPPORTED
682#endif
683#endif
684
685#endif /* PNG_READ_SUPPORTED */
686
687#ifdef PNG_WRITE_SUPPORTED
688
689# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
690    !defined(PNG_NO_WRITE_TRANSFORMS)
691#  define PNG_WRITE_TRANSFORMS_SUPPORTED
692#endif
693
694#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
695#  ifndef PNG_NO_WRITE_SHIFT
696#    define PNG_WRITE_SHIFT_SUPPORTED
697#  endif
698#  ifndef PNG_NO_WRITE_PACK
699#    define PNG_WRITE_PACK_SUPPORTED
700#  endif
701#  ifndef PNG_NO_WRITE_BGR
702#    define PNG_WRITE_BGR_SUPPORTED
703#  endif
704#  ifndef PNG_NO_WRITE_SWAP
705#    define PNG_WRITE_SWAP_SUPPORTED
706#  endif
707#  ifndef PNG_NO_WRITE_PACKSWAP
708#    define PNG_WRITE_PACKSWAP_SUPPORTED
709#  endif
710#  ifndef PNG_NO_WRITE_INVERT
711#    define PNG_WRITE_INVERT_SUPPORTED
712#  endif
713#  ifndef PNG_NO_WRITE_FILLER
714#    define PNG_WRITE_FILLER_SUPPORTED   /* same as WRITE_STRIP_ALPHA */
715#  endif
716#  ifndef PNG_NO_WRITE_SWAP_ALPHA
717#    define PNG_WRITE_SWAP_ALPHA_SUPPORTED
718#  endif
719#ifndef PNG_1_0_X
720#  ifndef PNG_NO_WRITE_INVERT_ALPHA
721#    define PNG_WRITE_INVERT_ALPHA_SUPPORTED
722#  endif
723#endif
724#  ifndef PNG_NO_WRITE_USER_TRANSFORM
725#    define PNG_WRITE_USER_TRANSFORM_SUPPORTED
726#  endif
727#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
728
729#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
730    !defined(PNG_WRITE_INTERLACING_SUPPORTED)
731#define PNG_WRITE_INTERLACING_SUPPORTED  /* not required for PNG-compliant
732                                            encoders, but can cause trouble
733                                            if left undefined */
734#endif
735
736#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
737    !defined(PNG_WRITE_WEIGHTED_FILTER) && \
738     defined(PNG_FLOATING_POINT_SUPPORTED)
739#  define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
740#endif
741
742#ifndef PNG_NO_WRITE_FLUSH
743#  define PNG_WRITE_FLUSH_SUPPORTED
744#endif
745
746#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
747/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
748#ifndef PNG_NO_WRITE_EMPTY_PLTE
749#  define PNG_WRITE_EMPTY_PLTE_SUPPORTED
750#endif
751#endif
752
753#endif /* PNG_WRITE_SUPPORTED */
754
755#ifndef PNG_1_0_X
756#  ifndef PNG_NO_ERROR_NUMBERS
757#    define PNG_ERROR_NUMBERS_SUPPORTED
758#  endif
759#endif /* PNG_1_0_X */
760
761#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
762    defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
763#  ifndef PNG_NO_USER_TRANSFORM_PTR
764#    define PNG_USER_TRANSFORM_PTR_SUPPORTED
765#  endif
766#endif
767
768#ifndef PNG_NO_STDIO
769#  define PNG_TIME_RFC1123_SUPPORTED
770#endif
771
772/* This adds extra functions in pngget.c for accessing data from the
773 * info pointer (added in version 0.99)
774 * png_get_image_width()
775 * png_get_image_height()
776 * png_get_bit_depth()
777 * png_get_color_type()
778 * png_get_compression_type()
779 * png_get_filter_type()
780 * png_get_interlace_type()
781 * png_get_pixel_aspect_ratio()
782 * png_get_pixels_per_meter()
783 * png_get_x_offset_pixels()
784 * png_get_y_offset_pixels()
785 * png_get_x_offset_microns()
786 * png_get_y_offset_microns()
787 */
788#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
789#  define PNG_EASY_ACCESS_SUPPORTED
790#endif
791
792/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
793 * and removed from version 1.2.20.  The following will be removed
794 * from libpng-1.4.0
795*/
796
797#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
798#  ifndef PNG_OPTIMIZED_CODE_SUPPORTED
799#    define PNG_OPTIMIZED_CODE_SUPPORTED
800#  endif
801#endif
802
803#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
804#  ifndef PNG_ASSEMBLER_CODE_SUPPORTED
805#    define PNG_ASSEMBLER_CODE_SUPPORTED
806#  endif
807
808#  if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
809     /* work around 64-bit gcc compiler bugs in gcc-3.x */
810#    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
811#      define PNG_NO_MMX_CODE
812#    endif
813#  endif
814
815#  ifdef __APPLE__
816#    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
817#      define PNG_NO_MMX_CODE
818#    endif
819#  endif
820
821#  if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
822#    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
823#      define PNG_NO_MMX_CODE
824#    endif
825#  endif
826
827#  if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
828#    define PNG_MMX_CODE_SUPPORTED
829#  endif
830
831#endif
832/* end of obsolete code to be removed from libpng-1.4.0 */
833
834/* Added at libpng-1.2.0 */
835#ifndef PNG_1_0_X
836#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
837#  define PNG_USER_MEM_SUPPORTED
838#endif
839#endif /* PNG_1_0_X */
840
841/* Added at libpng-1.2.6 */
842#ifndef PNG_1_0_X
843#  ifndef PNG_SET_USER_LIMITS_SUPPORTED
844#    ifndef PNG_NO_SET_USER_LIMITS
845#      define PNG_SET_USER_LIMITS_SUPPORTED
846#    endif
847#  endif
848#endif /* PNG_1_0_X */
849
850/* Added at libpng-1.0.53 and 1.2.43 */
851#ifndef PNG_USER_LIMITS_SUPPORTED
852#  ifndef PNG_NO_USER_LIMITS
853#    define PNG_USER_LIMITS_SUPPORTED
854#  endif
855#endif
856
857/* Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGS no matter
858 * how large, set these limits to 0x7fffffffL
859 */
860#ifndef PNG_USER_WIDTH_MAX
861#  define PNG_USER_WIDTH_MAX 1000000L
862#endif
863#ifndef PNG_USER_HEIGHT_MAX
864#  define PNG_USER_HEIGHT_MAX 1000000L
865#endif
866
867/* Added at libpng-1.2.43.  To accept all valid PNGs no matter
868 * how large, set these two limits to 0.
869 */
870#ifndef PNG_USER_CHUNK_CACHE_MAX
871#  define PNG_USER_CHUNK_CACHE_MAX 0
872#endif
873
874/* Added at libpng-1.2.43 */
875#ifndef PNG_USER_CHUNK_MALLOC_MAX
876#  define PNG_USER_CHUNK_MALLOC_MAX 0
877#endif
878
879#ifndef PNG_LITERAL_SHARP
880#  define PNG_LITERAL_SHARP 0x23
881#endif
882#ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
883#  define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
884#endif
885#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
886#  define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
887#endif
888
889/* Added at libpng-1.2.34 */
890#ifndef PNG_STRING_NEWLINE
891#define PNG_STRING_NEWLINE "\n"
892#endif
893
894/* These are currently experimental features, define them if you want */
895
896/* very little testing */
897/*
898#ifdef PNG_READ_SUPPORTED
899#  ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
900#    define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
901#  endif
902#endif
903*/
904
905/* This is only for PowerPC big-endian and 680x0 systems */
906/* some testing */
907/*
908#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
909#  define PNG_READ_BIG_ENDIAN_SUPPORTED
910#endif
911*/
912
913/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
914/*
915#define PNG_NO_POINTER_INDEXING
916*/
917
918#if !defined(PNG_NO_POINTER_INDEXING) && \
919    !defined(PNG_POINTER_INDEXING_SUPPORTED)
920#  define PNG_POINTER_INDEXING_SUPPORTED
921#endif
922
923/* These functions are turned off by default, as they will be phased out. */
924/*
925#define  PNG_USELESS_TESTS_SUPPORTED
926#define  PNG_CORRECT_PALETTE_SUPPORTED
927*/
928
929/* Any chunks you are not interested in, you can undef here.  The
930 * ones that allocate memory may be expecially important (hIST,
931 * tEXt, zTXt, tRNS, pCAL).  Others will just save time and make png_info
932 * a bit smaller.
933 */
934
935#if defined(PNG_READ_SUPPORTED) && \
936    !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
937    !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
938#  define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
939#endif
940
941#if defined(PNG_WRITE_SUPPORTED) && \
942    !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
943    !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
944#  define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
945#endif
946
947#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
948
949#ifdef PNG_NO_READ_TEXT
950#  define PNG_NO_READ_iTXt
951#  define PNG_NO_READ_tEXt
952#  define PNG_NO_READ_zTXt
953#endif
954#ifndef PNG_NO_READ_bKGD
955#  define PNG_READ_bKGD_SUPPORTED
956#  define PNG_bKGD_SUPPORTED
957#endif
958#ifndef PNG_NO_READ_cHRM
959#  define PNG_READ_cHRM_SUPPORTED
960#  define PNG_cHRM_SUPPORTED
961#endif
962#ifndef PNG_NO_READ_gAMA
963#  define PNG_READ_gAMA_SUPPORTED
964#  define PNG_gAMA_SUPPORTED
965#endif
966#ifndef PNG_NO_READ_hIST
967#  define PNG_READ_hIST_SUPPORTED
968#  define PNG_hIST_SUPPORTED
969#endif
970#ifndef PNG_NO_READ_iCCP
971#  define PNG_READ_iCCP_SUPPORTED
972#  define PNG_iCCP_SUPPORTED
973#endif
974#ifndef PNG_NO_READ_iTXt
975#  ifndef PNG_READ_iTXt_SUPPORTED
976#    define PNG_READ_iTXt_SUPPORTED
977#  endif
978#  ifndef PNG_iTXt_SUPPORTED
979#    define PNG_iTXt_SUPPORTED
980#  endif
981#endif
982#ifndef PNG_NO_READ_oFFs
983#  define PNG_READ_oFFs_SUPPORTED
984#  define PNG_oFFs_SUPPORTED
985#endif
986#ifndef PNG_NO_READ_pCAL
987#  define PNG_READ_pCAL_SUPPORTED
988#  define PNG_pCAL_SUPPORTED
989#endif
990#ifndef PNG_NO_READ_sCAL
991#  define PNG_READ_sCAL_SUPPORTED
992#  define PNG_sCAL_SUPPORTED
993#endif
994#ifndef PNG_NO_READ_pHYs
995#  define PNG_READ_pHYs_SUPPORTED
996#  define PNG_pHYs_SUPPORTED
997#endif
998#ifndef PNG_NO_READ_sBIT
999#  define PNG_READ_sBIT_SUPPORTED
1000#  define PNG_sBIT_SUPPORTED
1001#endif
1002#ifndef PNG_NO_READ_sPLT
1003#  define PNG_READ_sPLT_SUPPORTED
1004#  define PNG_sPLT_SUPPORTED
1005#endif
1006#ifndef PNG_NO_READ_sRGB
1007#  define PNG_READ_sRGB_SUPPORTED
1008#  define PNG_sRGB_SUPPORTED
1009#endif
1010#ifndef PNG_NO_READ_tEXt
1011#  define PNG_READ_tEXt_SUPPORTED
1012#  define PNG_tEXt_SUPPORTED
1013#endif
1014#ifndef PNG_NO_READ_tIME
1015#  define PNG_READ_tIME_SUPPORTED
1016#  define PNG_tIME_SUPPORTED
1017#endif
1018#ifndef PNG_NO_READ_tRNS
1019#  define PNG_READ_tRNS_SUPPORTED
1020#  define PNG_tRNS_SUPPORTED
1021#endif
1022#ifndef PNG_NO_READ_zTXt
1023#  define PNG_READ_zTXt_SUPPORTED
1024#  define PNG_zTXt_SUPPORTED
1025#endif
1026#ifndef PNG_NO_READ_OPT_PLTE
1027#  define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
1028#endif                      /* optional PLTE chunk in RGB and RGBA images */
1029#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
1030    defined(PNG_READ_zTXt_SUPPORTED)
1031#  define PNG_READ_TEXT_SUPPORTED
1032#  define PNG_TEXT_SUPPORTED
1033#endif
1034
1035#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
1036
1037#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
1038#  define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
1039#  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1040#    define PNG_UNKNOWN_CHUNKS_SUPPORTED
1041#  endif
1042#endif
1043#if !defined(PNG_NO_READ_USER_CHUNKS) && \
1044     defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
1045#  define PNG_READ_USER_CHUNKS_SUPPORTED
1046#  define PNG_USER_CHUNKS_SUPPORTED
1047#  ifdef PNG_NO_READ_UNKNOWN_CHUNKS
1048#    undef PNG_NO_READ_UNKNOWN_CHUNKS
1049#  endif
1050#  ifdef PNG_NO_HANDLE_AS_UNKNOWN
1051#    undef PNG_NO_HANDLE_AS_UNKNOWN
1052#  endif
1053#endif
1054
1055#ifndef PNG_NO_HANDLE_AS_UNKNOWN
1056#  ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1057#    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1058#  endif
1059#endif
1060
1061#ifdef PNG_WRITE_SUPPORTED
1062#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
1063
1064#ifdef PNG_NO_WRITE_TEXT
1065#  define PNG_NO_WRITE_iTXt
1066#  define PNG_NO_WRITE_tEXt
1067#  define PNG_NO_WRITE_zTXt
1068#endif
1069#ifndef PNG_NO_WRITE_bKGD
1070#  define PNG_WRITE_bKGD_SUPPORTED
1071#  ifndef PNG_bKGD_SUPPORTED
1072#    define PNG_bKGD_SUPPORTED
1073#  endif
1074#endif
1075#ifndef PNG_NO_WRITE_cHRM
1076#  define PNG_WRITE_cHRM_SUPPORTED
1077#  ifndef PNG_cHRM_SUPPORTED
1078#    define PNG_cHRM_SUPPORTED
1079#  endif
1080#endif
1081#ifndef PNG_NO_WRITE_gAMA
1082#  define PNG_WRITE_gAMA_SUPPORTED
1083#  ifndef PNG_gAMA_SUPPORTED
1084#    define PNG_gAMA_SUPPORTED
1085#  endif
1086#endif
1087#ifndef PNG_NO_WRITE_hIST
1088#  define PNG_WRITE_hIST_SUPPORTED
1089#  ifndef PNG_hIST_SUPPORTED
1090#    define PNG_hIST_SUPPORTED
1091#  endif
1092#endif
1093#ifndef PNG_NO_WRITE_iCCP
1094#  define PNG_WRITE_iCCP_SUPPORTED
1095#  ifndef PNG_iCCP_SUPPORTED
1096#    define PNG_iCCP_SUPPORTED
1097#  endif
1098#endif
1099#ifndef PNG_NO_WRITE_iTXt
1100#  ifndef PNG_WRITE_iTXt_SUPPORTED
1101#    define PNG_WRITE_iTXt_SUPPORTED
1102#  endif
1103#  ifndef PNG_iTXt_SUPPORTED
1104#    define PNG_iTXt_SUPPORTED
1105#  endif
1106#endif
1107#ifndef PNG_NO_WRITE_oFFs
1108#  define PNG_WRITE_oFFs_SUPPORTED
1109#  ifndef PNG_oFFs_SUPPORTED
1110#    define PNG_oFFs_SUPPORTED
1111#  endif
1112#endif
1113#ifndef PNG_NO_WRITE_pCAL
1114#  define PNG_WRITE_pCAL_SUPPORTED
1115#  ifndef PNG_pCAL_SUPPORTED
1116#    define PNG_pCAL_SUPPORTED
1117#  endif
1118#endif
1119#ifndef PNG_NO_WRITE_sCAL
1120#  define PNG_WRITE_sCAL_SUPPORTED
1121#  ifndef PNG_sCAL_SUPPORTED
1122#    define PNG_sCAL_SUPPORTED
1123#  endif
1124#endif
1125#ifndef PNG_NO_WRITE_pHYs
1126#  define PNG_WRITE_pHYs_SUPPORTED
1127#  ifndef PNG_pHYs_SUPPORTED
1128#    define PNG_pHYs_SUPPORTED
1129#  endif
1130#endif
1131#ifndef PNG_NO_WRITE_sBIT
1132#  define PNG_WRITE_sBIT_SUPPORTED
1133#  ifndef PNG_sBIT_SUPPORTED
1134#    define PNG_sBIT_SUPPORTED
1135#  endif
1136#endif
1137#ifndef PNG_NO_WRITE_sPLT
1138#  define PNG_WRITE_sPLT_SUPPORTED
1139#  ifndef PNG_sPLT_SUPPORTED
1140#    define PNG_sPLT_SUPPORTED
1141#  endif
1142#endif
1143#ifndef PNG_NO_WRITE_sRGB
1144#  define PNG_WRITE_sRGB_SUPPORTED
1145#  ifndef PNG_sRGB_SUPPORTED
1146#    define PNG_sRGB_SUPPORTED
1147#  endif
1148#endif
1149#ifndef PNG_NO_WRITE_tEXt
1150#  define PNG_WRITE_tEXt_SUPPORTED
1151#  ifndef PNG_tEXt_SUPPORTED
1152#    define PNG_tEXt_SUPPORTED
1153#  endif
1154#endif
1155#ifndef PNG_NO_WRITE_tIME
1156#  define PNG_WRITE_tIME_SUPPORTED
1157#  ifndef PNG_tIME_SUPPORTED
1158#    define PNG_tIME_SUPPORTED
1159#  endif
1160#endif
1161#ifndef PNG_NO_WRITE_tRNS
1162#  define PNG_WRITE_tRNS_SUPPORTED
1163#  ifndef PNG_tRNS_SUPPORTED
1164#    define PNG_tRNS_SUPPORTED
1165#  endif
1166#endif
1167#ifndef PNG_NO_WRITE_zTXt
1168#  define PNG_WRITE_zTXt_SUPPORTED
1169#  ifndef PNG_zTXt_SUPPORTED
1170#    define PNG_zTXt_SUPPORTED
1171#  endif
1172#endif
1173#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1174    defined(PNG_WRITE_zTXt_SUPPORTED)
1175#  define PNG_WRITE_TEXT_SUPPORTED
1176#  ifndef PNG_TEXT_SUPPORTED
1177#    define PNG_TEXT_SUPPORTED
1178#  endif
1179#endif
1180
1181#ifdef PNG_WRITE_tIME_SUPPORTED
1182#  ifndef PNG_NO_CONVERT_tIME
1183#    ifndef _WIN32_WCE
1184/*   The "tm" structure is not supported on WindowsCE */
1185#      ifndef PNG_CONVERT_tIME_SUPPORTED
1186#        define PNG_CONVERT_tIME_SUPPORTED
1187#      endif
1188#   endif
1189#  endif
1190#endif
1191
1192#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1193
1194#if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED)
1195#  define PNG_WRITE_FILTER_SUPPORTED
1196#endif
1197
1198#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1199#  define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1200#  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1201#    define PNG_UNKNOWN_CHUNKS_SUPPORTED
1202#  endif
1203#endif
1204
1205#ifndef PNG_NO_HANDLE_AS_UNKNOWN
1206#  ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1207#    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1208#  endif
1209#endif
1210#endif /* PNG_WRITE_SUPPORTED */
1211
1212/* Turn this off to disable png_read_png() and
1213 * png_write_png() and leave the row_pointers member
1214 * out of the info structure.
1215 */
1216#ifndef PNG_NO_INFO_IMAGE
1217#  define PNG_INFO_IMAGE_SUPPORTED
1218#endif
1219
1220/* Need the time information for converting tIME chunks */
1221#ifdef PNG_CONVERT_tIME_SUPPORTED
1222     /* "time.h" functions are not supported on WindowsCE */
1223#    include <time.h>
1224#endif
1225
1226/* Some typedefs to get us started.  These should be safe on most of the
1227 * common platforms.  The typedefs should be at least as large as the
1228 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1229 * don't have to be exactly that size.  Some compilers dislike passing
1230 * unsigned shorts as function parameters, so you may be better off using
1231 * unsigned int for png_uint_16.  Likewise, for 64-bit systems, you may
1232 * want to have unsigned int for png_uint_32 instead of unsigned long.
1233 */
1234
1235typedef unsigned long png_uint_32;
1236typedef long png_int_32;
1237typedef unsigned short png_uint_16;
1238typedef short png_int_16;
1239typedef unsigned char png_byte;
1240
1241/* This is usually size_t.  It is typedef'ed just in case you need it to
1242   change (I'm not sure if you will or not, so I thought I'd be safe) */
1243#ifdef PNG_SIZE_T
1244   typedef PNG_SIZE_T png_size_t;
1245#  define png_sizeof(x) png_convert_size(sizeof(x))
1246#else
1247   typedef size_t png_size_t;
1248#  define png_sizeof(x) sizeof(x)
1249#endif
1250
1251/* The following is needed for medium model support.  It cannot be in the
1252 * PNG_INTERNAL section.  Needs modification for other compilers besides
1253 * MSC.  Model independent support declares all arrays and pointers to be
1254 * large using the far keyword.  The zlib version used must also support
1255 * model independent data.  As of version zlib 1.0.4, the necessary changes
1256 * have been made in zlib.  The USE_FAR_KEYWORD define triggers other
1257 * changes that are needed. (Tim Wegner)
1258 */
1259
1260/* Separate compiler dependencies (problem here is that zlib.h always
1261   defines FAR. (SJT) */
1262#ifdef __BORLANDC__
1263#  if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1264#    define LDATA 1
1265#  else
1266#    define LDATA 0
1267#  endif
1268   /* GRR:  why is Cygwin in here?  Cygwin is not Borland C... */
1269#  if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1270#    define PNG_MAX_MALLOC_64K
1271#    if (LDATA != 1)
1272#      ifndef FAR
1273#        define FAR __far
1274#      endif
1275#      define USE_FAR_KEYWORD
1276#    endif   /* LDATA != 1 */
1277     /* Possibly useful for moving data out of default segment.
1278      * Uncomment it if you want. Could also define FARDATA as
1279      * const if your compiler supports it. (SJT)
1280#    define FARDATA FAR
1281      */
1282#  endif  /* __WIN32__, __FLAT__, __CYGWIN__ */
1283#endif   /* __BORLANDC__ */
1284
1285
1286/* Suggest testing for specific compiler first before testing for
1287 * FAR.  The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1288 * making reliance oncertain keywords suspect. (SJT)
1289 */
1290
1291/* MSC Medium model */
1292#ifdef FAR
1293#  ifdef M_I86MM
1294#    define USE_FAR_KEYWORD
1295#    define FARDATA FAR
1296#    include <dos.h>
1297#  endif
1298#endif
1299
1300/* SJT: default case */
1301#ifndef FAR
1302#  define FAR
1303#endif
1304
1305/* At this point FAR is always defined */
1306#ifndef FARDATA
1307#  define FARDATA
1308#endif
1309
1310/* Typedef for floating-point numbers that are converted
1311   to fixed-point with a multiple of 100,000, e.g., int_gamma */
1312typedef png_int_32 png_fixed_point;
1313
1314/* Add typedefs for pointers */
1315typedef void            FAR * png_voidp;
1316typedef png_byte        FAR * png_bytep;
1317typedef png_uint_32     FAR * png_uint_32p;
1318typedef png_int_32      FAR * png_int_32p;
1319typedef png_uint_16     FAR * png_uint_16p;
1320typedef png_int_16      FAR * png_int_16p;
1321typedef PNG_CONST char  FAR * png_const_charp;
1322typedef char            FAR * png_charp;
1323typedef png_fixed_point FAR * png_fixed_point_p;
1324
1325#ifndef PNG_NO_STDIO
1326#ifdef _WIN32_WCE
1327typedef HANDLE                png_FILE_p;
1328#else
1329typedef FILE                * png_FILE_p;
1330#endif
1331#endif
1332
1333#ifdef PNG_FLOATING_POINT_SUPPORTED
1334typedef double          FAR * png_doublep;
1335#endif
1336
1337/* Pointers to pointers; i.e. arrays */
1338typedef png_byte        FAR * FAR * png_bytepp;
1339typedef png_uint_32     FAR * FAR * png_uint_32pp;
1340typedef png_int_32      FAR * FAR * png_int_32pp;
1341typedef png_uint_16     FAR * FAR * png_uint_16pp;
1342typedef png_int_16      FAR * FAR * png_int_16pp;
1343typedef PNG_CONST char  FAR * FAR * png_const_charpp;
1344typedef char            FAR * FAR * png_charpp;
1345typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1346#ifdef PNG_FLOATING_POINT_SUPPORTED
1347typedef double          FAR * FAR * png_doublepp;
1348#endif
1349
1350/* Pointers to pointers to pointers; i.e., pointer to array */
1351typedef char            FAR * FAR * FAR * png_charppp;
1352
1353#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1354/* SPC -  Is this stuff deprecated? */
1355/* It'll be removed as of libpng-1.4.0 - GR-P */
1356/* libpng typedefs for types in zlib. If zlib changes
1357 * or another compression library is used, then change these.
1358 * Eliminates need to change all the source files.
1359 */
1360typedef charf *         png_zcharp;
1361typedef charf * FAR *   png_zcharpp;
1362typedef z_stream FAR *  png_zstreamp;
1363#endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1364
1365/*
1366 * Define PNG_BUILD_DLL if the module being built is a Windows
1367 * LIBPNG DLL.
1368 *
1369 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1370 * It is equivalent to Microsoft predefined macro _DLL that is
1371 * automatically defined when you compile using the share
1372 * version of the CRT (C Run-Time library)
1373 *
1374 * The cygwin mods make this behavior a little different:
1375 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1376 * Define PNG_STATIC if you are building a static library for use with cygwin,
1377 *   -or- if you are building an application that you want to link to the
1378 *   static library.
1379 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1380 *   the other flags is defined.
1381 */
1382
1383#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1384#  define PNG_DLL
1385#endif
1386/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1387 * When building a static lib, default to no GLOBAL ARRAYS, but allow
1388 * command-line override
1389 */
1390#ifdef __CYGWIN__
1391#  ifndef PNG_STATIC
1392#    ifdef PNG_USE_GLOBAL_ARRAYS
1393#      undef PNG_USE_GLOBAL_ARRAYS
1394#    endif
1395#    ifndef PNG_USE_LOCAL_ARRAYS
1396#      define PNG_USE_LOCAL_ARRAYS
1397#    endif
1398#  else
1399#    if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
1400#      ifdef PNG_USE_GLOBAL_ARRAYS
1401#        undef PNG_USE_GLOBAL_ARRAYS
1402#      endif
1403#    endif
1404#  endif
1405#  if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1406#    define PNG_USE_LOCAL_ARRAYS
1407#  endif
1408#endif
1409
1410/* Do not use global arrays (helps with building DLL's)
1411 * They are no longer used in libpng itself, since version 1.0.5c,
1412 * but might be required for some pre-1.0.5c applications.
1413 */
1414#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1415#  if defined(PNG_NO_GLOBAL_ARRAYS) || \
1416      (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
1417#    define PNG_USE_LOCAL_ARRAYS
1418#  else
1419#    define PNG_USE_GLOBAL_ARRAYS
1420#  endif
1421#endif
1422
1423#ifdef __CYGWIN__
1424#  undef PNGAPI
1425#  define PNGAPI __cdecl
1426#  undef PNG_IMPEXP
1427#  define PNG_IMPEXP
1428#endif
1429
1430/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1431 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1432 * Don't ignore those warnings; you must also reset the default calling
1433 * convention in your compiler to match your PNGAPI, and you must build
1434 * zlib and your applications the same way you build libpng.
1435 */
1436
1437#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1438#  ifndef PNG_NO_MODULEDEF
1439#    define PNG_NO_MODULEDEF
1440#  endif
1441#endif
1442
1443#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1444#  define PNG_IMPEXP
1445#endif
1446
1447#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1448    (( defined(_Windows) || defined(_WINDOWS) || \
1449       defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1450
1451#  ifndef PNGAPI
1452#     if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1453#        define PNGAPI __cdecl
1454#     else
1455#        define PNGAPI _cdecl
1456#     endif
1457#  endif
1458
1459#  if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1460       0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1461#     define PNG_IMPEXP
1462#  endif
1463
1464#  ifndef PNG_IMPEXP
1465
1466#     define PNG_EXPORT_TYPE1(type,symbol)  PNG_IMPEXP type PNGAPI symbol
1467#     define PNG_EXPORT_TYPE2(type,symbol)  type PNG_IMPEXP PNGAPI symbol
1468
1469      /* Borland/Microsoft */
1470#     if defined(_MSC_VER) || defined(__BORLANDC__)
1471#        if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1472#           define PNG_EXPORT PNG_EXPORT_TYPE1
1473#        else
1474#           define PNG_EXPORT PNG_EXPORT_TYPE2
1475#           ifdef PNG_BUILD_DLL
1476#              define PNG_IMPEXP __export
1477#           else
1478#              define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
1479                                                 VC++ */
1480#           endif                             /* Exists in Borland C++ for
1481                                                 C++ classes (== huge) */
1482#        endif
1483#     endif
1484
1485#     ifndef PNG_IMPEXP
1486#        ifdef PNG_BUILD_DLL
1487#           define PNG_IMPEXP __declspec(dllexport)
1488#        else
1489#           define PNG_IMPEXP __declspec(dllimport)
1490#        endif
1491#     endif
1492#  endif  /* PNG_IMPEXP */
1493#else /* !(DLL || non-cygwin WINDOWS) */
1494#   if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1495#      ifndef PNGAPI
1496#         define PNGAPI _System
1497#      endif
1498#   else
1499#      if 0 /* ... other platforms, with other meanings */
1500#      endif
1501#   endif
1502#endif
1503
1504#ifndef PNGAPI
1505#  define PNGAPI
1506#endif
1507#ifndef PNG_IMPEXP
1508#  define PNG_IMPEXP
1509#endif
1510
1511#ifdef PNG_BUILDSYMS
1512#  ifndef PNG_EXPORT
1513#    define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1514#  endif
1515#  ifdef PNG_USE_GLOBAL_ARRAYS
1516#    ifndef PNG_EXPORT_VAR
1517#      define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1518#    endif
1519#  endif
1520#endif
1521
1522#ifndef PNG_EXPORT
1523#  define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1524#endif
1525
1526#ifdef PNG_USE_GLOBAL_ARRAYS
1527#  ifndef PNG_EXPORT_VAR
1528#    define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1529#  endif
1530#endif
1531
1532#ifdef PNG_PEDANTIC_WARNINGS
1533#  ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
1534#    define PNG_PEDANTIC_WARNINGS_SUPPORTED
1535#  endif
1536#endif
1537
1538#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
1539/* Support for compiler specific function attributes.  These are used
1540 * so that where compiler support is available incorrect use of API
1541 * functions in png.h will generate compiler warnings.  Added at libpng
1542 * version 1.2.41.
1543 */
1544#  ifdef __GNUC__
1545#    ifndef PNG_USE_RESULT
1546#      define PNG_USE_RESULT __attribute__((__warn_unused_result__))
1547#    endif
1548#    ifndef PNG_NORETURN
1549#      define PNG_NORETURN   __attribute__((__noreturn__))
1550#    endif
1551#    ifndef PNG_ALLOCATED
1552#      define PNG_ALLOCATED  __attribute__((__malloc__))
1553#    endif
1554
1555    /* This specifically protects structure members that should only be
1556     * accessed from within the library, therefore should be empty during
1557     * a library build.
1558     */
1559#    ifndef PNG_DEPRECATED
1560#      define PNG_DEPRECATED __attribute__((__deprecated__))
1561#    endif
1562#    ifndef PNG_DEPSTRUCT
1563#      define PNG_DEPSTRUCT  __attribute__((__deprecated__))
1564#    endif
1565#    ifndef PNG_PRIVATE
1566#      if 0 /* Doesn't work so we use deprecated instead*/
1567#        define PNG_PRIVATE \
1568          __attribute__((warning("This function is not exported by libpng.")))
1569#      else
1570#        define PNG_PRIVATE \
1571          __attribute__((__deprecated__))
1572#      endif
1573#    endif /* PNG_PRIVATE */
1574#  endif /* __GNUC__ */
1575#endif /* PNG_PEDANTIC_WARNINGS */
1576
1577#ifndef PNG_DEPRECATED
1578#  define PNG_DEPRECATED  /* Use of this function is deprecated */
1579#endif
1580#ifndef PNG_USE_RESULT
1581#  define PNG_USE_RESULT  /* The result of this function must be checked */
1582#endif
1583#ifndef PNG_NORETURN
1584#  define PNG_NORETURN    /* This function does not return */
1585#endif
1586#ifndef PNG_ALLOCATED
1587#  define PNG_ALLOCATED   /* The result of the function is new memory */
1588#endif
1589#ifndef PNG_DEPSTRUCT
1590#  define PNG_DEPSTRUCT   /* Access to this struct member is deprecated */
1591#endif
1592#ifndef PNG_PRIVATE
1593#  define PNG_PRIVATE     /* This is a private libpng function */
1594#endif
1595
1596/* User may want to use these so they are not in PNG_INTERNAL. Any library
1597 * functions that are passed far data must be model independent.
1598 */
1599
1600#ifndef PNG_ABORT
1601#  define PNG_ABORT() abort()
1602#endif
1603
1604#ifdef PNG_SETJMP_SUPPORTED
1605#  define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1606#else
1607#  define png_jmpbuf(png_ptr) \
1608   (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1609#endif
1610
1611#ifdef USE_FAR_KEYWORD  /* memory model independent fns */
1612/* Use this to make far-to-near assignments */
1613#  define CHECK   1
1614#  define NOCHECK 0
1615#  define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1616#  define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1617#  define png_snprintf _fsnprintf   /* Added to v 1.2.19 */
1618#  define png_strlen  _fstrlen
1619#  define png_memcmp  _fmemcmp    /* SJT: added */
1620#  define png_memcpy  _fmemcpy
1621#  define png_memset  _fmemset
1622#else /* Use the usual functions */
1623#  define CVT_PTR(ptr)         (ptr)
1624#  define CVT_PTR_NOCHECK(ptr) (ptr)
1625#  ifndef PNG_NO_SNPRINTF
1626#    ifdef _MSC_VER
1627#      define png_snprintf _snprintf   /* Added to v 1.2.19 */
1628#      define png_snprintf2 _snprintf
1629#      define png_snprintf6 _snprintf
1630#    else
1631#      define png_snprintf snprintf   /* Added to v 1.2.19 */
1632#      define png_snprintf2 snprintf
1633#      define png_snprintf6 snprintf
1634#    endif
1635#  else
1636     /* You don't have or don't want to use snprintf().  Caution: Using
1637      * sprintf instead of snprintf exposes your application to accidental
1638      * or malevolent buffer overflows.  If you don't have snprintf()
1639      * as a general rule you should provide one (you can get one from
1640      * Portable OpenSSH).
1641      */
1642#    define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1643#    define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1644#    define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1645        sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1646#  endif
1647#  define png_strlen  strlen
1648#  define png_memcmp  memcmp      /* SJT: added */
1649#  define png_memcpy  memcpy
1650#  define png_memset  memset
1651#endif
1652/* End of memory model independent support */
1653
1654/* Just a little check that someone hasn't tried to define something
1655 * contradictory.
1656 */
1657#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1658#  undef PNG_ZBUF_SIZE
1659#  define PNG_ZBUF_SIZE 65536L
1660#endif
1661
1662/* Added at libpng-1.2.8 */
1663#endif /* PNG_VERSION_INFO_ONLY */
1664
1665#endif /* PNGCONF_H */
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