2 /* pngconf.h - machine configurable file for libpng
4 * libpng version 1.4.0 - January 3, 2010
5 * For conditions of distribution and use, see copyright notice in png.h
6 * Copyright (c) 1998-2010 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.)
10 * This code is released under the libpng license.
11 * For conditions of distribution and use, see the disclaimer
12 * and license in png.h
16 /* Any machine specific code is near the front of this file, so if you
17 * are configuring libpng for a machine, you may want to read the section
18 * starting here down to where it starts to typedef png_color, png_text,
25 #ifndef PNG_NO_LIMITS_H
29 /* Added at libpng-1.2.9 */
31 /* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
32 #ifdef PNG_CONFIGURE_LIBPNG
39 * Added at libpng-1.2.8
41 * PNG_USER_CONFIG has to be defined on the compiler command line. This
42 * includes the resource compiler for Windows DLL configurations.
44 #ifdef PNG_USER_CONFIG
45 # ifndef PNG_USER_PRIVATEBUILD
46 # define PNG_USER_PRIVATEBUILD
52 * If you create a private DLL you need to define in "pngusr.h" the followings:
53 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
55 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
56 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
57 * distinguish your DLL from those of the official release. These
58 * correspond to the trailing letters that come after the version
59 * number and must match your private DLL name>
60 * e.g. // private DLL "libpng13gx.dll"
61 * #define PNG_USER_DLLFNAME_POSTFIX "gx"
63 * The following macros are also at your disposal if you want to complete the
64 * DLL VERSIONINFO structure.
65 * - PNG_USER_VERSIONINFO_COMMENTS
66 * - PNG_USER_VERSIONINFO_COMPANYNAME
67 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
72 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
73 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
77 # pragma message("PRIVATEBUILD is deprecated.\
78 Use PNG_USER_PRIVATEBUILD instead.")
79 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD
83 /* End of material added to libpng-1.2.8 */
85 #ifndef PNG_VERSION_INFO_ONLY
87 /* This is the size of the compression buffer, and thus the size of
88 * an IDAT chunk. Make this whatever size you feel is best for your
89 * machine. One of these will be allocated per png_struct. When this
90 * is full, it writes the data to the disk, and does some other
91 * calculations. Making this an extremely small size will slow
92 * the library down, but you may want to experiment to determine
93 * where it becomes significant, if you are concerned with memory
94 * usage. Note that zlib allocates at least 32Kb also. For readers,
95 * this describes the size of the buffer available to read the data in.
96 * Unless this gets smaller than the size of a row (compressed),
97 * it should not make much difference how big this is.
100 #ifndef PNG_ZBUF_SIZE
101 # define PNG_ZBUF_SIZE 8192
104 /* Enable if you want a write-only libpng */
106 #ifndef PNG_NO_READ_SUPPORTED
107 # define PNG_READ_SUPPORTED
110 /* Enable if you want a read-only libpng */
112 #ifndef PNG_NO_WRITE_SUPPORTED
113 # define PNG_WRITE_SUPPORTED
116 /* Enabled in 1.4.0. */
117 #ifdef PNG_ALLOW_BENIGN_ERRORS
118 # define png_benign_error png_warning
119 # define png_chunk_benign_error png_chunk_warning
121 # ifndef PNG_BENIGN_ERRORS_SUPPORTED
122 # define png_benign_error png_error
123 # define png_chunk_benign_error png_chunk_error
127 /* Added at libpng version 1.4.0 */
128 #if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
129 # define PNG_WARNINGS_SUPPORTED
132 /* Added at libpng version 1.4.0 */
133 #if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
134 # define PNG_ERROR_TEXT_SUPPORTED
137 /* Added at libpng version 1.4.0 */
138 #if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
139 # define PNG_CHECK_cHRM_SUPPORTED
142 /* Added at libpng version 1.4.0 */
143 #if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
144 # define PNG_ALIGNED_MEMORY_SUPPORTED
147 /* Enabled by default in 1.2.0. You can disable this if you don't need to
148 support PNGs that are embedded in MNG datastreams */
149 #ifndef PNG_NO_MNG_FEATURES
150 # ifndef PNG_MNG_FEATURES_SUPPORTED
151 # define PNG_MNG_FEATURES_SUPPORTED
155 /* Added at libpng version 1.4.0 */
156 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
157 # ifndef PNG_FLOATING_POINT_SUPPORTED
158 # define PNG_FLOATING_POINT_SUPPORTED
162 /* Added at libpng-1.4.0beta49 for testing (this test is no longer used
163 in libpng and png_calloc() is always present)
165 #define PNG_CALLOC_SUPPORTED
167 /* If you are running on a machine where you cannot allocate more
168 * than 64K of memory at once, uncomment this. While libpng will not
169 * normally need that much memory in a chunk (unless you load up a very
170 * large file), zlib needs to know how big of a chunk it can use, and
171 * libpng thus makes sure to check any memory allocation to verify it
172 * will fit into memory.
173 #define PNG_MAX_MALLOC_64K
175 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
176 # define PNG_MAX_MALLOC_64K
179 /* Special munging to support doing things the 'cygwin' way:
180 * 'Normal' png-on-win32 defines/defaults:
181 * PNG_BUILD_DLL -- building dll
182 * PNG_USE_DLL -- building an application, linking to dll
183 * (no define) -- building static library, or building an
184 * application and linking to the static lib
185 * 'Cygwin' defines/defaults:
186 * PNG_BUILD_DLL -- (ignored) building the dll
187 * (no define) -- (ignored) building an application, linking to the dll
188 * PNG_STATIC -- (ignored) building the static lib, or building an
189 * application that links to the static lib.
190 * ALL_STATIC -- (ignored) building various static libs, or building an
191 * application that links to the static libs.
193 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
194 * this bit of #ifdefs will define the 'correct' config variables based on
195 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
198 * Also, the precedence order is:
199 * ALL_STATIC (since we can't #undef something outside our namespace)
202 * (nothing) == PNG_USE_DLL
204 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
205 * of auto-import in binutils, we no longer need to worry about
206 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
207 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
208 * to __declspec() stuff. However, we DO need to worry about
209 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
210 * such as CONSOLE_IO.
214 # ifdef PNG_BUILD_DLL
215 # undef PNG_BUILD_DLL
227 # ifdef PNG_BUILD_DLL
257 /* This protects us against compilers that run on a windowing system
258 * and thus don't have or would rather us not use the stdio types:
259 * stdin, stdout, and stderr. The only one currently used is stderr
260 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
261 * prevent these from being compiled and used. #defining PNG_NO_STDIO
262 * will also prevent these, plus will prevent the entire set of stdio
263 * macros and functions (FILE *, printf, etc.) from being compiled and used,
264 * unless (PNG_DEBUG > 0) has been #defined.
266 * #define PNG_NO_CONSOLE_IO
267 * #define PNG_NO_STDIO
270 #if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
271 # define PNG_STDIO_SUPPORTED
276 # if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
277 # define PNG_NO_CONSOLE_IO
282 # ifndef PNG_NO_CONSOLE_IO
283 # define PNG_NO_CONSOLE_IO
294 #if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
295 # define PNG_CONSOLE_IO_SUPPORTED
298 /* This macro protects us against machines that don't have function
299 * prototypes (ie K&R style headers). If your compiler does not handle
300 * function prototypes, define this macro and use the included ansi2knr.
301 * I've always been able to use _NO_PROTO as the indicator, but you may
302 * need to drag the empty declaration out in front of here, or change the
303 * ifdef to suit your own needs.
307 #ifdef OF /* zlib prototype munger */
308 # define PNGARG(arglist) OF(arglist)
312 # define PNGARG(arglist) ()
314 # define PNGARG(arglist) arglist
315 #endif /* _NO_PROTO */
321 /* Try to determine if we are compiling on a Mac. Note that testing for
322 * just __MWERKS__ is not good enough, because the Codewarrior is now used
323 * on non-Mac platforms.
326 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
327 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
332 /* Enough people need this for various reasons to include it here */
333 #if !defined(MACOS) && !defined(RISCOS)
334 # include <sys/types.h>
337 /* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
338 #if !defined(PNG_NO_SETJMP) && \
339 !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
340 # define PNG_SETJMP_SUPPORTED
343 #ifdef PNG_SETJMP_SUPPORTED
344 /* This is an attempt to force a single setjmp behaviour on Linux. If
345 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
347 * You can bypass this test if you know that your application uses exactly
348 * the same setjmp.h that was included when libpng was built. Only define
349 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
350 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
351 * while building a separate libpng library for general use.
354 # ifndef PNG_SKIP_SETJMP_CHECK
357 # define PNG_SAVE_BSD_SOURCE
361 /* If you encounter a compiler error here, see the explanation
362 * near the end of INSTALL.
364 __pngconf.h__ in libpng already includes setjmp.h;
365 __dont__ include it again.;
367 # endif /* __linux__ */
368 # endif /* PNG_SKIP_SETJMP_CHECK */
370 /* Include setjmp.h for error handling */
374 # ifdef PNG_SAVE_BSD_SOURCE
379 # undef PNG_SAVE_BSD_SOURCE
381 # endif /* __linux__ */
382 #endif /* PNG_SETJMP_SUPPORTED */
385 # include <strings.h>
390 /* Other defines for things like memory and the like can go here. */
392 /* This controls how fine the dithering gets. As this allocates
393 * a largish chunk of memory (32K), those who are not as concerned
394 * with dithering quality can decrease some or all of these.
396 #ifndef PNG_DITHER_RED_BITS
397 # define PNG_DITHER_RED_BITS 5
399 #ifndef PNG_DITHER_GREEN_BITS
400 # define PNG_DITHER_GREEN_BITS 5
402 #ifndef PNG_DITHER_BLUE_BITS
403 # define PNG_DITHER_BLUE_BITS 5
406 /* This controls how fine the gamma correction becomes when you
407 * are only interested in 8 bits anyway. Increasing this value
408 * results in more memory being used, and more pow() functions
409 * being called to fill in the gamma tables. Don't set this value
410 * less then 8, and even that may not work (I haven't tested it).
413 #ifndef PNG_MAX_GAMMA_8
414 # define PNG_MAX_GAMMA_8 11
417 /* This controls how much a difference in gamma we can tolerate before
418 * we actually start doing gamma conversion.
420 #ifndef PNG_GAMMA_THRESHOLD
421 # define PNG_GAMMA_THRESHOLD 0.05
424 /* The following uses const char * instead of char * for error
425 * and warning message functions, so some compilers won't complain.
426 * If you do not want to use const, define PNG_NO_CONST here.
430 # ifndef PNG_NO_CONST
431 # define PNG_CONST const
437 /* The following defines give you the ability to remove code from the
438 * library that you will not be using. I wish I could figure out how to
439 * automate this, but I can't do that without making it seriously hard
440 * on the users. So if you are not using an ability, change the #define
441 * to and #undef, and that part of the library will not be compiled. If
442 * your linker can't find a function, you may want to make sure the
443 * ability is defined here. Some of these depend upon some others being
444 * defined. I haven't figured out all the interactions here, so you may
445 * have to experiment awhile to get everything to compile. If you are
446 * creating or using a shared library, you probably shouldn't touch this,
447 * as it will affect the size of the structures, and this will cause bad
448 * things to happen if the library and/or application ever change.
451 /* Any features you will not be using can be undef'ed here */
453 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
454 * to turn it off with PNG_NO_READ|WRITE_TRANSFORMS on the compile line,
455 * then pick and choose which ones to define without having to edit this
456 * file. It is safe to use the PNG_NO_READ|WRITE_TRANSFORMS
457 * if you only want to have a png-compliant reader/writer but don't need
458 * any of the extra transformations. This saves about 80 kbytes in a
459 * typical installation of the library. (PNG_NO_* form added in version
460 * 1.0.1c, for consistency; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
464 /* Ignore attempt to turn off both floating and fixed point support */
465 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
466 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
467 # define PNG_FIXED_POINT_SUPPORTED
470 #ifdef PNG_READ_SUPPORTED
472 /* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */
473 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
474 !defined(PNG_NO_READ_TRANSFORMS)
475 # define PNG_READ_TRANSFORMS_SUPPORTED
478 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
479 # ifndef PNG_NO_READ_EXPAND
480 # define PNG_READ_EXPAND_SUPPORTED
482 # ifndef PNG_NO_READ_SHIFT
483 # define PNG_READ_SHIFT_SUPPORTED
485 # ifndef PNG_NO_READ_PACK
486 # define PNG_READ_PACK_SUPPORTED
488 # ifndef PNG_NO_READ_BGR
489 # define PNG_READ_BGR_SUPPORTED
491 # ifndef PNG_NO_READ_SWAP
492 # define PNG_READ_SWAP_SUPPORTED
494 # ifndef PNG_NO_READ_PACKSWAP
495 # define PNG_READ_PACKSWAP_SUPPORTED
497 # ifndef PNG_NO_READ_INVERT
498 # define PNG_READ_INVERT_SUPPORTED
500 #if 0 /* removed from libpng-1.4.0 */
501 # ifndef PNG_NO_READ_DITHER
502 # define PNG_READ_DITHER_SUPPORTED
505 # ifndef PNG_NO_READ_BACKGROUND
506 # define PNG_READ_BACKGROUND_SUPPORTED
508 # ifndef PNG_NO_READ_16_TO_8
509 # define PNG_READ_16_TO_8_SUPPORTED
511 # ifndef PNG_NO_READ_FILLER
512 # define PNG_READ_FILLER_SUPPORTED
514 # ifndef PNG_NO_READ_GAMMA
515 # define PNG_READ_GAMMA_SUPPORTED
517 # ifndef PNG_NO_READ_GRAY_TO_RGB
518 # define PNG_READ_GRAY_TO_RGB_SUPPORTED
520 # ifndef PNG_NO_READ_SWAP_ALPHA
521 # define PNG_READ_SWAP_ALPHA_SUPPORTED
523 # ifndef PNG_NO_READ_INVERT_ALPHA
524 # define PNG_READ_INVERT_ALPHA_SUPPORTED
526 # ifndef PNG_NO_READ_STRIP_ALPHA
527 # define PNG_READ_STRIP_ALPHA_SUPPORTED
529 # ifndef PNG_NO_READ_USER_TRANSFORM
530 # define PNG_READ_USER_TRANSFORM_SUPPORTED
532 # ifndef PNG_NO_READ_RGB_TO_GRAY
533 # define PNG_READ_RGB_TO_GRAY_SUPPORTED
535 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
537 /* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
538 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
539 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
540 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
541 #endif /* about interlacing capability! You'll */
542 /* still have interlacing unless you change the following define: */
544 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
546 /* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
547 #if !defined(PNG_NO_SEQUENTIAL_READ) && \
548 !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
549 !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
550 # define PNG_SEQUENTIAL_READ_SUPPORTED
553 #ifndef PNG_NO_READ_COMPOSITE_NODIV
554 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
555 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
559 #if !defined(PNG_NO_GET_INT_32) || defined(PNG_READ_oFFS_SUPPORTED) || \
560 defined(PNG_READ_pCAL_SUPPORTED)
561 # ifndef PNG_GET_INT_32_SUPPORTED
562 # define PNG_GET_INT_32_SUPPORTED
566 #endif /* PNG_READ_SUPPORTED */
568 #ifdef PNG_WRITE_SUPPORTED
570 /* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
571 #if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
572 !defined(PNG_NO_WRITE_TRANSFORMS)
573 # define PNG_WRITE_TRANSFORMS_SUPPORTED
576 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
577 # ifndef PNG_NO_WRITE_SHIFT
578 # define PNG_WRITE_SHIFT_SUPPORTED
580 # ifndef PNG_NO_WRITE_PACK
581 # define PNG_WRITE_PACK_SUPPORTED
583 # ifndef PNG_NO_WRITE_BGR
584 # define PNG_WRITE_BGR_SUPPORTED
586 # ifndef PNG_NO_WRITE_SWAP
587 # define PNG_WRITE_SWAP_SUPPORTED
589 # ifndef PNG_NO_WRITE_PACKSWAP
590 # define PNG_WRITE_PACKSWAP_SUPPORTED
592 # ifndef PNG_NO_WRITE_INVERT
593 # define PNG_WRITE_INVERT_SUPPORTED
595 # ifndef PNG_NO_WRITE_FILLER
596 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
598 # ifndef PNG_NO_WRITE_SWAP_ALPHA
599 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED
601 # ifndef PNG_NO_WRITE_INVERT_ALPHA
602 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED
604 # ifndef PNG_NO_WRITE_USER_TRANSFORM
605 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED
607 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
609 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
610 !defined(PNG_WRITE_INTERLACING_SUPPORTED)
611 /* This is not required for PNG-compliant encoders, but can cause
612 * trouble if left undefined
614 # define PNG_WRITE_INTERLACING_SUPPORTED
617 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
618 !defined(PNG_WRITE_WEIGHTED_FILTER) && \
619 defined(PNG_FLOATING_POINT_SUPPORTED)
620 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
623 #ifndef PNG_NO_WRITE_FLUSH
624 # define PNG_WRITE_FLUSH_SUPPORTED
627 #if !defined(PNG_NO_SAVE_INT_32) || defined(PNG_WRITE_oFFS_SUPPORTED) || \
628 defined(PNG_WRITE_pCAL_SUPPORTED)
629 # ifndef PNG_SAVE_INT_32_SUPPORTED
630 # define PNG_SAVE_INT_32_SUPPORTED
634 #endif /* PNG_WRITE_SUPPORTED */
636 #define PNG_NO_ERROR_NUMBERS
638 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
639 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
640 # ifndef PNG_NO_USER_TRANSFORM_PTR
641 # define PNG_USER_TRANSFORM_PTR_SUPPORTED
645 #if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
646 # define PNG_TIME_RFC1123_SUPPORTED
649 /* This adds extra functions in pngget.c for accessing data from the
650 * info pointer (added in version 0.99)
651 * png_get_image_width()
652 * png_get_image_height()
653 * png_get_bit_depth()
654 * png_get_color_type()
655 * png_get_compression_type()
656 * png_get_filter_type()
657 * png_get_interlace_type()
658 * png_get_pixel_aspect_ratio()
659 * png_get_pixels_per_meter()
660 * png_get_x_offset_pixels()
661 * png_get_y_offset_pixels()
662 * png_get_x_offset_microns()
663 * png_get_y_offset_microns()
665 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
666 # define PNG_EASY_ACCESS_SUPPORTED
669 /* Added at libpng-1.2.0 */
670 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
671 # define PNG_USER_MEM_SUPPORTED
674 /* Added at libpng-1.2.6 */
675 #ifndef PNG_SET_USER_LIMITS_SUPPORTED
676 # ifndef PNG_NO_SET_USER_LIMITS
677 # define PNG_SET_USER_LIMITS_SUPPORTED
681 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
682 * how large, set these limits to 0x7fffffffL
684 #ifndef PNG_USER_WIDTH_MAX
685 # define PNG_USER_WIDTH_MAX 1000000L
687 #ifndef PNG_USER_HEIGHT_MAX
688 # define PNG_USER_HEIGHT_MAX 1000000L
691 /* Added at libpng-1.4.0 */
692 #ifndef PNG_USER_CHUNK_CACHE_MAX
693 # define PNG_USER_CHUNK_CACHE_MAX 0x7fffffffL
696 /* Added at libpng-1.4.0 */
697 #if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
698 # define PNG_IO_STATE_SUPPORTED
701 #ifndef PNG_LITERAL_SHARP
702 # define PNG_LITERAL_SHARP 0x23
704 #ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
705 # define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
707 #ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
708 # define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
710 #ifndef PNG_STRING_NEWLINE
711 #define PNG_STRING_NEWLINE "\n"
714 /* These are currently experimental features, define them if you want */
716 /* Very little testing */
718 #ifdef PNG_READ_SUPPORTED
719 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
720 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
725 /* This is only for PowerPC big-endian and 680x0 systems */
728 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
729 # define PNG_READ_BIG_ENDIAN_SUPPORTED
733 #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
734 # define PNG_USE_READ_MACROS
737 /* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
739 #if !defined(PNG_NO_POINTER_INDEXING) && \
740 !defined(PNG_POINTER_INDEXING_SUPPORTED)
741 # define PNG_POINTER_INDEXING_SUPPORTED
745 /* Any chunks you are not interested in, you can undef here. The
746 * ones that allocate memory may be expecially important (hIST,
747 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
751 /* The size of the png_text structure changed in libpng-1.0.6 when
752 * iTXt support was added. iTXt support was turned off by default through
753 * libpng-1.2.x, to support old apps that malloc the png_text structure
754 * instead of calling png_set_text() and letting libpng malloc it. It
755 * was turned on by default in libpng-1.4.0.
758 /* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
759 #if defined(PNG_READ_SUPPORTED) && \
760 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
761 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
762 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
765 /* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
766 #if defined(PNG_WRITE_SUPPORTED) && \
767 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
768 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
769 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
772 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
774 #ifdef PNG_NO_READ_TEXT
775 # define PNG_NO_READ_iTXt
776 # define PNG_NO_READ_tEXt
777 # define PNG_NO_READ_zTXt
780 #ifndef PNG_NO_READ_bKGD
781 # define PNG_READ_bKGD_SUPPORTED
782 # define PNG_bKGD_SUPPORTED
784 #ifndef PNG_NO_READ_cHRM
785 # define PNG_READ_cHRM_SUPPORTED
786 # define PNG_cHRM_SUPPORTED
788 #ifndef PNG_NO_READ_gAMA
789 # define PNG_READ_gAMA_SUPPORTED
790 # define PNG_gAMA_SUPPORTED
792 #ifndef PNG_NO_READ_hIST
793 # define PNG_READ_hIST_SUPPORTED
794 # define PNG_hIST_SUPPORTED
796 #ifndef PNG_NO_READ_iCCP
797 # define PNG_READ_iCCP_SUPPORTED
798 # define PNG_iCCP_SUPPORTED
800 #ifndef PNG_NO_READ_iTXt
801 # ifndef PNG_READ_iTXt_SUPPORTED
802 # define PNG_READ_iTXt_SUPPORTED
804 # ifndef PNG_iTXt_SUPPORTED
805 # define PNG_iTXt_SUPPORTED
808 #ifndef PNG_NO_READ_oFFs
809 # define PNG_READ_oFFs_SUPPORTED
810 # define PNG_oFFs_SUPPORTED
812 #ifndef PNG_NO_READ_pCAL
813 # define PNG_READ_pCAL_SUPPORTED
814 # define PNG_pCAL_SUPPORTED
816 #ifndef PNG_NO_READ_sCAL
817 # define PNG_READ_sCAL_SUPPORTED
818 # define PNG_sCAL_SUPPORTED
820 #ifndef PNG_NO_READ_pHYs
821 # define PNG_READ_pHYs_SUPPORTED
822 # define PNG_pHYs_SUPPORTED
824 #ifndef PNG_NO_READ_sBIT
825 # define PNG_READ_sBIT_SUPPORTED
826 # define PNG_sBIT_SUPPORTED
828 #ifndef PNG_NO_READ_sPLT
829 # define PNG_READ_sPLT_SUPPORTED
830 # define PNG_sPLT_SUPPORTED
832 #ifndef PNG_NO_READ_sRGB
833 # define PNG_READ_sRGB_SUPPORTED
834 # define PNG_sRGB_SUPPORTED
836 #ifndef PNG_NO_READ_tEXt
837 # define PNG_READ_tEXt_SUPPORTED
838 # define PNG_tEXt_SUPPORTED
840 #ifndef PNG_NO_READ_tIME
841 # define PNG_READ_tIME_SUPPORTED
842 # define PNG_tIME_SUPPORTED
844 #ifndef PNG_NO_READ_tRNS
845 # define PNG_READ_tRNS_SUPPORTED
846 # define PNG_tRNS_SUPPORTED
848 #ifndef PNG_NO_READ_zTXt
849 # define PNG_READ_zTXt_SUPPORTED
850 # define PNG_zTXt_SUPPORTED
852 #ifndef PNG_NO_READ_OPT_PLTE
853 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
854 #endif /* optional PLTE chunk in RGB and RGBA images */
855 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
856 defined(PNG_READ_zTXt_SUPPORTED)
857 # define PNG_READ_TEXT_SUPPORTED
858 # define PNG_TEXT_SUPPORTED
861 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
863 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
864 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
865 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
866 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
869 #if !defined(PNG_NO_READ_USER_CHUNKS) && \
870 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
871 # define PNG_READ_USER_CHUNKS_SUPPORTED
872 # define PNG_USER_CHUNKS_SUPPORTED
873 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS
874 # undef PNG_NO_READ_UNKNOWN_CHUNKS
876 # ifdef PNG_NO_HANDLE_AS_UNKNOWN
877 # undef PNG_NO_HANDLE_AS_UNKNOWN
880 #ifndef PNG_NO_HANDLE_AS_UNKNOWN
881 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
882 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
886 #ifdef PNG_WRITE_SUPPORTED
887 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
889 #ifdef PNG_NO_WRITE_TEXT
890 # define PNG_NO_WRITE_iTXt
891 # define PNG_NO_WRITE_tEXt
892 # define PNG_NO_WRITE_zTXt
894 #ifndef PNG_NO_WRITE_bKGD
895 # define PNG_WRITE_bKGD_SUPPORTED
896 # ifndef PNG_bKGD_SUPPORTED
897 # define PNG_bKGD_SUPPORTED
900 #ifndef PNG_NO_WRITE_cHRM
901 # define PNG_WRITE_cHRM_SUPPORTED
902 # ifndef PNG_cHRM_SUPPORTED
903 # define PNG_cHRM_SUPPORTED
906 #ifndef PNG_NO_WRITE_gAMA
907 # define PNG_WRITE_gAMA_SUPPORTED
908 # ifndef PNG_gAMA_SUPPORTED
909 # define PNG_gAMA_SUPPORTED
912 #ifndef PNG_NO_WRITE_hIST
913 # define PNG_WRITE_hIST_SUPPORTED
914 # ifndef PNG_hIST_SUPPORTED
915 # define PNG_hIST_SUPPORTED
918 #ifndef PNG_NO_WRITE_iCCP
919 # define PNG_WRITE_iCCP_SUPPORTED
920 # ifndef PNG_iCCP_SUPPORTED
921 # define PNG_iCCP_SUPPORTED
924 #ifndef PNG_NO_WRITE_iTXt
925 # ifndef PNG_WRITE_iTXt_SUPPORTED
926 # define PNG_WRITE_iTXt_SUPPORTED
928 # ifndef PNG_iTXt_SUPPORTED
929 # define PNG_iTXt_SUPPORTED
932 #ifndef PNG_NO_WRITE_oFFs
933 # define PNG_WRITE_oFFs_SUPPORTED
934 # ifndef PNG_oFFs_SUPPORTED
935 # define PNG_oFFs_SUPPORTED
938 #ifndef PNG_NO_WRITE_pCAL
939 # define PNG_WRITE_pCAL_SUPPORTED
940 # ifndef PNG_pCAL_SUPPORTED
941 # define PNG_pCAL_SUPPORTED
944 #ifndef PNG_NO_WRITE_sCAL
945 # define PNG_WRITE_sCAL_SUPPORTED
946 # ifndef PNG_sCAL_SUPPORTED
947 # define PNG_sCAL_SUPPORTED
950 #ifndef PNG_NO_WRITE_pHYs
951 # define PNG_WRITE_pHYs_SUPPORTED
952 # ifndef PNG_pHYs_SUPPORTED
953 # define PNG_pHYs_SUPPORTED
956 #ifndef PNG_NO_WRITE_sBIT
957 # define PNG_WRITE_sBIT_SUPPORTED
958 # ifndef PNG_sBIT_SUPPORTED
959 # define PNG_sBIT_SUPPORTED
962 #ifndef PNG_NO_WRITE_sPLT
963 # define PNG_WRITE_sPLT_SUPPORTED
964 # ifndef PNG_sPLT_SUPPORTED
965 # define PNG_sPLT_SUPPORTED
968 #ifndef PNG_NO_WRITE_sRGB
969 # define PNG_WRITE_sRGB_SUPPORTED
970 # ifndef PNG_sRGB_SUPPORTED
971 # define PNG_sRGB_SUPPORTED
974 #ifndef PNG_NO_WRITE_tEXt
975 # define PNG_WRITE_tEXt_SUPPORTED
976 # ifndef PNG_tEXt_SUPPORTED
977 # define PNG_tEXt_SUPPORTED
980 #ifndef PNG_NO_WRITE_tIME
981 # define PNG_WRITE_tIME_SUPPORTED
982 # ifndef PNG_tIME_SUPPORTED
983 # define PNG_tIME_SUPPORTED
986 #ifndef PNG_NO_WRITE_tRNS
987 # define PNG_WRITE_tRNS_SUPPORTED
988 # ifndef PNG_tRNS_SUPPORTED
989 # define PNG_tRNS_SUPPORTED
992 #ifndef PNG_NO_WRITE_zTXt
993 # define PNG_WRITE_zTXt_SUPPORTED
994 # ifndef PNG_zTXt_SUPPORTED
995 # define PNG_zTXt_SUPPORTED
998 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
999 defined(PNG_WRITE_zTXt_SUPPORTED)
1000 # define PNG_WRITE_TEXT_SUPPORTED
1001 # ifndef PNG_TEXT_SUPPORTED
1002 # define PNG_TEXT_SUPPORTED
1006 #ifdef PNG_WRITE_tIME_SUPPORTED
1007 # ifndef PNG_NO_CONVERT_tIME
1009 /* The "tm" structure is not supported on WindowsCE */
1010 # ifndef PNG_CONVERT_tIME_SUPPORTED
1011 # define PNG_CONVERT_tIME_SUPPORTED
1017 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1019 #if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED)
1020 # define PNG_WRITE_FILTER_SUPPORTED
1023 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1024 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1025 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1026 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
1029 #ifndef PNG_NO_HANDLE_AS_UNKNOWN
1030 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1031 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1034 #endif /* PNG_WRITE_SUPPORTED */
1036 /* Turn this off to disable png_read_png() and
1037 * png_write_png() and leave the row_pointers member
1038 * out of the info structure.
1040 #ifndef PNG_NO_INFO_IMAGE
1041 # define PNG_INFO_IMAGE_SUPPORTED
1044 /* Need the time information for converting tIME chunks */
1045 #ifdef PNG_CONVERT_tIME_SUPPORTED
1046 /* "time.h" functions are not supported on WindowsCE */
1050 /* Some typedefs to get us started. These should be safe on most of the
1051 * common platforms. The typedefs should be at least as large as the
1052 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1053 * don't have to be exactly that size. Some compilers dislike passing
1054 * unsigned shorts as function parameters, so you may be better off using
1055 * unsigned int for png_uint_16.
1058 #if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL)
1059 typedef unsigned int png_uint_32;
1060 typedef int png_int_32;
1062 typedef unsigned long png_uint_32;
1063 typedef long png_int_32;
1065 typedef unsigned short png_uint_16;
1066 typedef short png_int_16;
1067 typedef unsigned char png_byte;
1069 #ifdef PNG_NO_SIZE_T
1070 typedef unsigned int png_size_t;
1072 typedef size_t png_size_t;
1074 #define png_sizeof(x) sizeof(x)
1076 /* The following is needed for medium model support. It cannot be in the
1077 * pngpriv.h header. Needs modification for other compilers besides
1078 * MSC. Model independent support declares all arrays and pointers to be
1079 * large using the far keyword. The zlib version used must also support
1080 * model independent data. As of version zlib 1.0.4, the necessary changes
1081 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1082 * changes that are needed. (Tim Wegner)
1085 /* Separate compiler dependencies (problem here is that zlib.h always
1086 * defines FAR. (SJT)
1089 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1094 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1095 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1096 # define PNG_MAX_MALLOC_64K
1101 # define USE_FAR_KEYWORD
1102 # endif /* LDATA != 1 */
1103 /* Possibly useful for moving data out of default segment.
1104 * Uncomment it if you want. Could also define FARDATA as
1105 * const if your compiler supports it. (SJT)
1106 # define FARDATA FAR
1108 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1109 #endif /* __BORLANDC__ */
1112 /* Suggest testing for specific compiler first before testing for
1113 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1114 * making reliance oncertain keywords suspect. (SJT)
1117 /* MSC Medium model */
1120 # define USE_FAR_KEYWORD
1121 # define FARDATA FAR
1126 /* SJT: default case */
1131 /* At this point FAR is always defined */
1136 /* Typedef for floating-point numbers that are converted
1137 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1138 typedef png_int_32 png_fixed_point;
1140 /* Add typedefs for pointers */
1141 typedef void FAR * png_voidp;
1142 typedef png_byte FAR * png_bytep;
1143 typedef png_uint_32 FAR * png_uint_32p;
1144 typedef png_int_32 FAR * png_int_32p;
1145 typedef png_uint_16 FAR * png_uint_16p;
1146 typedef png_int_16 FAR * png_int_16p;
1147 typedef PNG_CONST char FAR * png_const_charp;
1148 typedef char FAR * png_charp;
1149 typedef png_fixed_point FAR * png_fixed_point_p;
1151 #ifndef PNG_NO_STDIO
1152 typedef FILE * png_FILE_p;
1155 #ifdef PNG_FLOATING_POINT_SUPPORTED
1156 typedef double FAR * png_doublep;
1159 /* Pointers to pointers; i.e. arrays */
1160 typedef png_byte FAR * FAR * png_bytepp;
1161 typedef png_uint_32 FAR * FAR * png_uint_32pp;
1162 typedef png_int_32 FAR * FAR * png_int_32pp;
1163 typedef png_uint_16 FAR * FAR * png_uint_16pp;
1164 typedef png_int_16 FAR * FAR * png_int_16pp;
1165 typedef PNG_CONST char FAR * FAR * png_const_charpp;
1166 typedef char FAR * FAR * png_charpp;
1167 typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1168 #ifdef PNG_FLOATING_POINT_SUPPORTED
1169 typedef double FAR * FAR * png_doublepp;
1172 /* Pointers to pointers to pointers; i.e., pointer to array */
1173 typedef char FAR * FAR * FAR * png_charppp;
1175 /* Define PNG_BUILD_DLL if the module being built is a Windows
1178 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1179 * It is equivalent to Microsoft predefined macro _DLL that is
1180 * automatically defined when you compile using the share
1181 * version of the CRT (C Run-Time library)
1183 * The cygwin mods make this behavior a little different:
1184 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1185 * Define PNG_STATIC if you are building a static library for use with cygwin,
1186 * -or- if you are building an application that you want to link to the
1188 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1189 * the other flags is defined.
1192 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1198 # define PNGAPI __cdecl
1203 #define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
1205 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1206 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1207 * Don't ignore those warnings; you must also reset the default calling
1208 * convention in your compiler to match your PNGAPI, and you must build
1209 * zlib and your applications the same way you build libpng.
1212 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1213 # ifndef PNG_NO_MODULEDEF
1214 # define PNG_NO_MODULEDEF
1218 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1222 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1223 (( defined(_Windows) || defined(_WINDOWS) || \
1224 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1227 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1228 # define PNGAPI __cdecl
1230 # define PNGAPI _cdecl
1234 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1235 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1241 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1242 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1244 /* Borland/Microsoft */
1245 # if defined(_MSC_VER) || defined(__BORLANDC__)
1246 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1247 # define PNG_EXPORT PNG_EXPORT_TYPE1
1249 # define PNG_EXPORT PNG_EXPORT_TYPE2
1250 # ifdef PNG_BUILD_DLL
1251 # define PNG_IMPEXP __export
1253 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in VC++ */
1254 # endif /* Exists in Borland C++ for
1255 C++ classes (== huge) */
1260 # ifdef PNG_BUILD_DLL
1261 # define PNG_IMPEXP __declspec(dllexport)
1263 # define PNG_IMPEXP __declspec(dllimport)
1266 # endif /* PNG_IMPEXP */
1267 #else /* !(DLL || non-cygwin WINDOWS) */
1268 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1270 # define PNGAPI _System
1273 # if 0 /* ... other platforms, with other meanings */
1285 #ifdef PNG_BUILDSYMS
1287 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1292 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1295 /* Support for compiler specific function attributes. These are used
1296 * so that where compiler support is available incorrect use of API
1297 * functions in png.h will generate compiler warnings.
1299 * Added at libpng-1.2.41.
1302 #ifndef PNG_NO_PEDANTIC_WARNINGS
1303 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
1304 # define PNG_PEDANTIC_WARNINGS_SUPPORTED
1308 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
1309 /* Support for compiler specific function attributes. These are used
1310 * so that where compiler support is available incorrect use of API
1311 * functions in png.h will generate compiler warnings. Added at libpng
1315 # ifndef PNG_USE_RESULT
1316 # define PNG_USE_RESULT __attribute__((__warn_unused_result__))
1318 # ifndef PNG_NORETURN
1319 # define PNG_NORETURN __attribute__((__noreturn__))
1321 # ifndef PNG_ALLOCATED
1322 # define PNG_ALLOCATED __attribute__((__malloc__))
1325 /* This specifically protects structure members that should only be
1326 * accessed from within the library, therefore should be empty during
1329 # ifndef PNG_DEPRECATED
1330 # define PNG_DEPRECATED __attribute__((__deprecated__))
1332 # ifndef PNG_DEPSTRUCT
1333 # define PNG_DEPSTRUCT __attribute__((__deprecated__))
1335 # ifndef PNG_PRIVATE
1336 # if 0 /* Doesn't work so we use deprecated instead*/
1337 # define PNG_PRIVATE \
1338 __attribute__((warning("This function is not exported by libpng.")))
1340 # define PNG_PRIVATE \
1341 __attribute__((__deprecated__))
1343 # endif /* PNG_PRIVATE */
1344 # endif /* __GNUC__ */
1345 #endif /* PNG_PEDANTIC_WARNINGS */
1347 #ifndef PNG_DEPRECATED
1348 # define PNG_DEPRECATED /* Use of this function is deprecated */
1350 #ifndef PNG_USE_RESULT
1351 # define PNG_USE_RESULT /* The result of this function must be checked */
1353 #ifndef PNG_NORETURN
1354 # define PNG_NORETURN /* This function does not return */
1356 #ifndef PNG_ALLOCATED
1357 # define PNG_ALLOCATED /* The result of the function is new memory */
1359 #ifndef PNG_DEPSTRUCT
1360 # define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
1363 # define PNG_PRIVATE /* This is a private libpng function */
1366 /* Users may want to use these so they are not private. Any library
1367 * functions that are passed far data must be model-independent.
1370 /* memory model/platform independent fns */
1373 # define PNG_ABORT() ExitProcess(0)
1375 # define PNG_ABORT() abort()
1379 #ifdef USE_FAR_KEYWORD
1380 /* Use this to make far-to-near assignments */
1383 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1384 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1385 # define png_strcpy _fstrcpy
1386 # define png_strncpy _fstrncpy /* Added to v 1.2.6 */
1387 # define png_strlen _fstrlen
1388 # define png_memcmp _fmemcmp /* SJT: added */
1389 # define png_memcpy _fmemcpy
1390 # define png_memset _fmemset
1391 # define png_sprintf sprintf
1393 # ifdef _WINDOWS_ /* Favor Windows over C runtime fns */
1394 # define CVT_PTR(ptr) (ptr)
1395 # define CVT_PTR_NOCHECK(ptr) (ptr)
1396 # define png_strcpy lstrcpyA
1397 # define png_strncpy lstrcpynA
1398 # define png_strlen lstrlenA
1399 # define png_memcmp memcmp
1400 # define png_memcpy CopyMemory
1401 # define png_memset memset
1402 # define png_sprintf wsprintfA
1404 # define CVT_PTR(ptr) (ptr)
1405 # define CVT_PTR_NOCHECK(ptr) (ptr)
1406 # define png_strcpy strcpy
1407 # define png_strncpy strncpy /* Added to v 1.2.6 */
1408 # define png_strlen strlen
1409 # define png_memcmp memcmp /* SJT: added */
1410 # define png_memcpy memcpy
1411 # define png_memset memset
1412 # define png_sprintf sprintf
1413 # ifndef PNG_NO_SNPRINTF
1415 # define png_snprintf _snprintf /* Added to v 1.2.19 */
1416 # define png_snprintf2 _snprintf
1417 # define png_snprintf6 _snprintf
1419 # define png_snprintf snprintf /* Added to v 1.2.19 */
1420 # define png_snprintf2 snprintf
1421 # define png_snprintf6 snprintf
1424 /* You don't have or don't want to use snprintf(). Caution: Using
1425 * sprintf instead of snprintf exposes your application to accidental
1426 * or malevolent buffer overflows. If you don't have snprintf()
1427 * as a general rule you should provide one (you can get one from
1428 * Portable OpenSSH).
1430 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1431 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1432 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1433 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1438 /* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
1439 * and no smaller than png_uint_32. Casts from png_size_t or png_uint_32
1440 * to png_alloc_size_t are not necessary; in fact, it is recommended
1441 * not to use them at all so that the compiler can complain when something
1442 * turns out to be problematic.
1443 * Casts in the other direction (from png_alloc_size_t to png_size_t or
1444 * png_uint_32) should be explicitly applied; however, we do not expect
1445 * to encounter practical situations that require such conversions.
1447 #if defined(__TURBOC__) && !defined(__FLAT__)
1448 # define png_mem_alloc farmalloc
1449 # define png_mem_free farfree
1450 typedef unsigned long png_alloc_size_t;
1452 # if defined(_MSC_VER) && defined(MAXSEG_64K)
1453 # define png_mem_alloc(s) halloc(s, 1)
1454 # define png_mem_free hfree
1455 typedef unsigned long png_alloc_size_t;
1457 # if defined(_WINDOWS_) && (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
1458 # define png_mem_alloc(s) HeapAlloc(GetProcessHeap(), 0, s)
1459 # define png_mem_free(p) HeapFree(GetProcessHeap(), 0, p)
1460 typedef DWORD png_alloc_size_t;
1462 # define png_mem_alloc malloc
1463 # define png_mem_free free
1464 typedef png_size_t png_alloc_size_t;
1468 /* End of memory model/platform independent support */
1470 /* Just a little check that someone hasn't tried to define something
1473 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1474 # undef PNG_ZBUF_SIZE
1475 # define PNG_ZBUF_SIZE 65536L
1479 /* Added at libpng-1.2.8 */
1480 #endif /* PNG_VERSION_INFO_ONLY */
1482 #endif /* PNGCONF_H */