2 /* pngconf.h - machine configurable file for libpng
4 * libpng version 1.4.1 - February 25, 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"
34 #ifdef PNG_CONFIGURE_LIBPNG
41 * Added at libpng-1.2.8
43 * PNG_USER_CONFIG has to be defined on the compiler command line. This
44 * includes the resource compiler for Windows DLL configurations.
46 #ifdef PNG_USER_CONFIG
47 # ifndef PNG_USER_PRIVATEBUILD
48 # define PNG_USER_PRIVATEBUILD
54 * If you create a private DLL you need to define in "pngusr.h" the followings:
55 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
57 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
58 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
59 * distinguish your DLL from those of the official release. These
60 * correspond to the trailing letters that come after the version
61 * number and must match your private DLL name>
62 * e.g. // private DLL "libpng13gx.dll"
63 * #define PNG_USER_DLLFNAME_POSTFIX "gx"
65 * The following macros are also at your disposal if you want to complete the
66 * DLL VERSIONINFO structure.
67 * - PNG_USER_VERSIONINFO_COMMENTS
68 * - PNG_USER_VERSIONINFO_COMPANYNAME
69 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
74 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
75 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
79 # pragma message("PRIVATEBUILD is deprecated.\
80 Use PNG_USER_PRIVATEBUILD instead.")
81 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD
85 /* End of material added to libpng-1.2.8 */
87 #ifndef PNG_VERSION_INFO_ONLY
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.
102 #ifndef PNG_ZBUF_SIZE
103 # define PNG_ZBUF_SIZE 8192
106 /* Enable if you want a write-only libpng */
108 #ifndef PNG_NO_READ_SUPPORTED
109 # define PNG_READ_SUPPORTED
112 /* Enable if you want a read-only libpng */
114 #ifndef PNG_NO_WRITE_SUPPORTED
115 # define PNG_WRITE_SUPPORTED
118 /* Enabled in 1.4.0. */
119 #ifdef PNG_ALLOW_BENIGN_ERRORS
120 # define png_benign_error png_warning
121 # define png_chunk_benign_error png_chunk_warning
123 # ifndef PNG_BENIGN_ERRORS_SUPPORTED
124 # define png_benign_error png_error
125 # define png_chunk_benign_error png_chunk_error
129 /* Added at libpng version 1.4.0 */
130 #if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
131 # define PNG_WARNINGS_SUPPORTED
134 /* Added at libpng version 1.4.0 */
135 #if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
136 # define PNG_ERROR_TEXT_SUPPORTED
139 /* Added at libpng version 1.4.0 */
140 #if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
141 # define PNG_CHECK_cHRM_SUPPORTED
144 /* Added at libpng version 1.4.0 */
145 #if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
146 # define PNG_ALIGNED_MEMORY_SUPPORTED
149 /* Enabled by default in 1.2.0. You can disable this if you don't need to
150 support PNGs that are embedded in MNG datastreams */
151 #ifndef PNG_NO_MNG_FEATURES
152 # ifndef PNG_MNG_FEATURES_SUPPORTED
153 # define PNG_MNG_FEATURES_SUPPORTED
157 /* Added at libpng version 1.4.0 */
158 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
159 # ifndef PNG_FLOATING_POINT_SUPPORTED
160 # define PNG_FLOATING_POINT_SUPPORTED
164 /* Added at libpng-1.4.0beta49 for testing (this test is no longer used
165 in libpng and png_calloc() is always present)
167 #define PNG_CALLOC_SUPPORTED
169 /* If you are running on a machine where you cannot allocate more
170 * than 64K of memory at once, uncomment this. While libpng will not
171 * normally need that much memory in a chunk (unless you load up a very
172 * large file), zlib needs to know how big of a chunk it can use, and
173 * libpng thus makes sure to check any memory allocation to verify it
174 * will fit into memory.
175 #define PNG_MAX_MALLOC_64K
177 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
178 # define PNG_MAX_MALLOC_64K
181 /* Special munging to support doing things the 'cygwin' way:
182 * 'Normal' png-on-win32 defines/defaults:
183 * PNG_BUILD_DLL -- building dll
184 * PNG_USE_DLL -- building an application, linking to dll
185 * (no define) -- building static library, or building an
186 * application and linking to the static lib
187 * 'Cygwin' defines/defaults:
188 * PNG_BUILD_DLL -- (ignored) building the dll
189 * (no define) -- (ignored) building an application, linking to the dll
190 * PNG_STATIC -- (ignored) building the static lib, or building an
191 * application that links to the static lib.
192 * ALL_STATIC -- (ignored) building various static libs, or building an
193 * application that links to the static libs.
195 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
196 * this bit of #ifdefs will define the 'correct' config variables based on
197 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
200 * Also, the precedence order is:
201 * ALL_STATIC (since we can't #undef something outside our namespace)
204 * (nothing) == PNG_USE_DLL
206 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
207 * of auto-import in binutils, we no longer need to worry about
208 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
209 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
210 * to __declspec() stuff. However, we DO need to worry about
211 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
212 * such as CONSOLE_IO.
216 # ifdef PNG_BUILD_DLL
217 # undef PNG_BUILD_DLL
229 # ifdef PNG_BUILD_DLL
259 /* This protects us against compilers that run on a windowing system
260 * and thus don't have or would rather us not use the stdio types:
261 * stdin, stdout, and stderr. The only one currently used is stderr
262 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
263 * prevent these from being compiled and used. #defining PNG_NO_STDIO
264 * will also prevent these, plus will prevent the entire set of stdio
265 * macros and functions (FILE *, printf, etc.) from being compiled and used,
266 * unless (PNG_DEBUG > 0) has been #defined.
268 * #define PNG_NO_CONSOLE_IO
269 * #define PNG_NO_STDIO
272 #if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
273 # define PNG_STDIO_SUPPORTED
278 # if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
279 # define PNG_NO_CONSOLE_IO
284 # ifndef PNG_NO_CONSOLE_IO
285 # define PNG_NO_CONSOLE_IO
296 #if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
297 # define PNG_CONSOLE_IO_SUPPORTED
300 /* This macro protects us against machines that don't have function
301 * prototypes (ie K&R style headers). If your compiler does not handle
302 * function prototypes, define this macro and use the included ansi2knr.
303 * I've always been able to use _NO_PROTO as the indicator, but you may
304 * need to drag the empty declaration out in front of here, or change the
305 * ifdef to suit your own needs.
309 #ifdef OF /* zlib prototype munger */
310 # define PNGARG(arglist) OF(arglist)
314 # define PNGARG(arglist) ()
316 # define PNGARG(arglist) arglist
317 #endif /* _NO_PROTO */
323 /* Try to determine if we are compiling on a Mac. Note that testing for
324 * just __MWERKS__ is not good enough, because the Codewarrior is now used
325 * on non-Mac platforms.
328 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
329 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
334 /* Enough people need this for various reasons to include it here */
335 #if !defined(MACOS) && !defined(RISCOS)
336 # include <sys/types.h>
339 /* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
340 #if !defined(PNG_NO_SETJMP) && \
341 !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
342 # define PNG_SETJMP_SUPPORTED
345 #ifdef PNG_SETJMP_SUPPORTED
346 /* This is an attempt to force a single setjmp behaviour on Linux. If
347 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
349 * You can bypass this test if you know that your application uses exactly
350 * the same setjmp.h that was included when libpng was built. Only define
351 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
352 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
353 * while building a separate libpng library for general use.
356 # ifndef PNG_SKIP_SETJMP_CHECK
359 # define PNG_SAVE_BSD_SOURCE
363 /* If you encounter a compiler error here, see the explanation
364 * near the end of INSTALL.
366 __pngconf.h__ in libpng already includes setjmp.h;
367 __dont__ include it again.;
369 # endif /* __linux__ */
370 # endif /* PNG_SKIP_SETJMP_CHECK */
372 /* Include setjmp.h for error handling */
376 # ifdef PNG_SAVE_BSD_SOURCE
381 # undef PNG_SAVE_BSD_SOURCE
383 # endif /* __linux__ */
384 #endif /* PNG_SETJMP_SUPPORTED */
387 # include <strings.h>
392 /* Other defines for things like memory and the like can go here. */
394 /* This controls how fine the dithering gets. As this allocates
395 * a largish chunk of memory (32K), those who are not as concerned
396 * with dithering quality can decrease some or all of these.
398 #ifndef PNG_DITHER_RED_BITS
399 # define PNG_DITHER_RED_BITS 5
401 #ifndef PNG_DITHER_GREEN_BITS
402 # define PNG_DITHER_GREEN_BITS 5
404 #ifndef PNG_DITHER_BLUE_BITS
405 # define PNG_DITHER_BLUE_BITS 5
408 /* This controls how fine the gamma correction becomes when you
409 * are only interested in 8 bits anyway. Increasing this value
410 * results in more memory being used, and more pow() functions
411 * being called to fill in the gamma tables. Don't set this value
412 * less then 8, and even that may not work (I haven't tested it).
415 #ifndef PNG_MAX_GAMMA_8
416 # define PNG_MAX_GAMMA_8 11
419 /* This controls how much a difference in gamma we can tolerate before
420 * we actually start doing gamma conversion.
422 #ifndef PNG_GAMMA_THRESHOLD
423 # define PNG_GAMMA_THRESHOLD 0.05
426 /* The following uses const char * instead of char * for error
427 * and warning message functions, so some compilers won't complain.
428 * If you do not want to use const, define PNG_NO_CONST here.
432 # ifndef PNG_NO_CONST
433 # define PNG_CONST const
439 /* The following defines give you the ability to remove code from the
440 * library that you will not be using. I wish I could figure out how to
441 * automate this, but I can't do that without making it seriously hard
442 * on the users. So if you are not using an ability, change the #define
443 * to and #undef, and that part of the library will not be compiled. If
444 * your linker can't find a function, you may want to make sure the
445 * ability is defined here. Some of these depend upon some others being
446 * defined. I haven't figured out all the interactions here, so you may
447 * have to experiment awhile to get everything to compile. If you are
448 * creating or using a shared library, you probably shouldn't touch this,
449 * as it will affect the size of the structures, and this will cause bad
450 * things to happen if the library and/or application ever change.
453 /* Any features you will not be using can be undef'ed here */
455 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
456 * to turn it off with PNG_NO_READ|WRITE_TRANSFORMS on the compile line,
457 * then pick and choose which ones to define without having to edit this
458 * file. It is safe to use the PNG_NO_READ|WRITE_TRANSFORMS
459 * if you only want to have a png-compliant reader/writer but don't need
460 * any of the extra transformations. This saves about 80 kbytes in a
461 * typical installation of the library. (PNG_NO_* form added in version
462 * 1.0.1c, for consistency; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
466 /* Ignore attempt to turn off both floating and fixed point support */
467 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
468 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
469 # define PNG_FIXED_POINT_SUPPORTED
472 #ifdef PNG_READ_SUPPORTED
474 /* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */
475 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
476 !defined(PNG_NO_READ_TRANSFORMS)
477 # define PNG_READ_TRANSFORMS_SUPPORTED
480 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
481 # ifndef PNG_NO_READ_EXPAND
482 # define PNG_READ_EXPAND_SUPPORTED
484 # ifndef PNG_NO_READ_SHIFT
485 # define PNG_READ_SHIFT_SUPPORTED
487 # ifndef PNG_NO_READ_PACK
488 # define PNG_READ_PACK_SUPPORTED
490 # ifndef PNG_NO_READ_BGR
491 # define PNG_READ_BGR_SUPPORTED
493 # ifndef PNG_NO_READ_SWAP
494 # define PNG_READ_SWAP_SUPPORTED
496 # ifndef PNG_NO_READ_PACKSWAP
497 # define PNG_READ_PACKSWAP_SUPPORTED
499 # ifndef PNG_NO_READ_INVERT
500 # define PNG_READ_INVERT_SUPPORTED
502 #if 0 /* removed from libpng-1.4.0 */
503 # ifndef PNG_NO_READ_DITHER
504 # define PNG_READ_DITHER_SUPPORTED
507 # ifndef PNG_NO_READ_BACKGROUND
508 # define PNG_READ_BACKGROUND_SUPPORTED
510 # ifndef PNG_NO_READ_16_TO_8
511 # define PNG_READ_16_TO_8_SUPPORTED
513 # ifndef PNG_NO_READ_FILLER
514 # define PNG_READ_FILLER_SUPPORTED
516 # ifndef PNG_NO_READ_GAMMA
517 # define PNG_READ_GAMMA_SUPPORTED
519 # ifndef PNG_NO_READ_GRAY_TO_RGB
520 # define PNG_READ_GRAY_TO_RGB_SUPPORTED
522 # ifndef PNG_NO_READ_SWAP_ALPHA
523 # define PNG_READ_SWAP_ALPHA_SUPPORTED
525 # ifndef PNG_NO_READ_INVERT_ALPHA
526 # define PNG_READ_INVERT_ALPHA_SUPPORTED
528 # ifndef PNG_NO_READ_STRIP_ALPHA
529 # define PNG_READ_STRIP_ALPHA_SUPPORTED
531 # ifndef PNG_NO_READ_USER_TRANSFORM
532 # define PNG_READ_USER_TRANSFORM_SUPPORTED
534 # ifndef PNG_NO_READ_RGB_TO_GRAY
535 # define PNG_READ_RGB_TO_GRAY_SUPPORTED
537 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
539 /* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
540 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
541 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
542 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
543 #endif /* about interlacing capability! You'll */
544 /* still have interlacing unless you change the following define: */
546 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
548 /* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
549 #if !defined(PNG_NO_SEQUENTIAL_READ) && \
550 !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
551 !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
552 # define PNG_SEQUENTIAL_READ_SUPPORTED
555 #ifndef PNG_NO_READ_COMPOSITE_NODIV
556 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
557 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
561 #if !defined(PNG_NO_GET_INT_32) || defined(PNG_READ_oFFS_SUPPORTED) || \
562 defined(PNG_READ_pCAL_SUPPORTED)
563 # ifndef PNG_GET_INT_32_SUPPORTED
564 # define PNG_GET_INT_32_SUPPORTED
568 #endif /* PNG_READ_SUPPORTED */
570 #ifdef PNG_WRITE_SUPPORTED
572 /* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
573 #if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
574 !defined(PNG_NO_WRITE_TRANSFORMS)
575 # define PNG_WRITE_TRANSFORMS_SUPPORTED
578 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
579 # ifndef PNG_NO_WRITE_SHIFT
580 # define PNG_WRITE_SHIFT_SUPPORTED
582 # ifndef PNG_NO_WRITE_PACK
583 # define PNG_WRITE_PACK_SUPPORTED
585 # ifndef PNG_NO_WRITE_BGR
586 # define PNG_WRITE_BGR_SUPPORTED
588 # ifndef PNG_NO_WRITE_SWAP
589 # define PNG_WRITE_SWAP_SUPPORTED
591 # ifndef PNG_NO_WRITE_PACKSWAP
592 # define PNG_WRITE_PACKSWAP_SUPPORTED
594 # ifndef PNG_NO_WRITE_INVERT
595 # define PNG_WRITE_INVERT_SUPPORTED
597 # ifndef PNG_NO_WRITE_FILLER
598 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
600 # ifndef PNG_NO_WRITE_SWAP_ALPHA
601 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED
603 # ifndef PNG_NO_WRITE_INVERT_ALPHA
604 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED
606 # ifndef PNG_NO_WRITE_USER_TRANSFORM
607 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED
609 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
611 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
612 !defined(PNG_WRITE_INTERLACING_SUPPORTED)
613 /* This is not required for PNG-compliant encoders, but can cause
614 * trouble if left undefined
616 # define PNG_WRITE_INTERLACING_SUPPORTED
619 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
620 !defined(PNG_WRITE_WEIGHTED_FILTER) && \
621 defined(PNG_FLOATING_POINT_SUPPORTED)
622 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
625 #ifndef PNG_NO_WRITE_FLUSH
626 # define PNG_WRITE_FLUSH_SUPPORTED
629 #if !defined(PNG_NO_SAVE_INT_32) || defined(PNG_WRITE_oFFS_SUPPORTED) || \
630 defined(PNG_WRITE_pCAL_SUPPORTED)
631 # ifndef PNG_SAVE_INT_32_SUPPORTED
632 # define PNG_SAVE_INT_32_SUPPORTED
636 #endif /* PNG_WRITE_SUPPORTED */
638 #define PNG_NO_ERROR_NUMBERS
640 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
641 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
642 # ifndef PNG_NO_USER_TRANSFORM_PTR
643 # define PNG_USER_TRANSFORM_PTR_SUPPORTED
647 #if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
648 # define PNG_TIME_RFC1123_SUPPORTED
651 /* This adds extra functions in pngget.c for accessing data from the
652 * info pointer (added in version 0.99)
653 * png_get_image_width()
654 * png_get_image_height()
655 * png_get_bit_depth()
656 * png_get_color_type()
657 * png_get_compression_type()
658 * png_get_filter_type()
659 * png_get_interlace_type()
660 * png_get_pixel_aspect_ratio()
661 * png_get_pixels_per_meter()
662 * png_get_x_offset_pixels()
663 * png_get_y_offset_pixels()
664 * png_get_x_offset_microns()
665 * png_get_y_offset_microns()
667 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
668 # define PNG_EASY_ACCESS_SUPPORTED
671 /* Added at libpng-1.2.0 */
672 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
673 # define PNG_USER_MEM_SUPPORTED
676 /* Added at libpng-1.2.6 */
677 #ifndef PNG_NO_SET_USER_LIMITS
678 # ifndef PNG_SET_USER_LIMITS_SUPPORTED
679 # define PNG_SET_USER_LIMITS_SUPPORTED
681 /* Feature added at libpng-1.4.0, this flag added at 1.4.1 */
682 # ifndef PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
683 # define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
685 /* Feature added at libpng-1.4.1, this flag added at 1.4.1 */
686 # ifndef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
687 # define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
691 /* Added at libpng-1.2.43 */
692 #ifndef PNG_USER_LIMITS_SUPPORTED
693 # ifndef PNG_NO_USER_LIMITS
694 # define PNG_USER_LIMITS_SUPPORTED
698 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
699 * how large, set these two limits to 0x7fffffffL
701 #ifndef PNG_USER_WIDTH_MAX
702 # define PNG_USER_WIDTH_MAX 1000000L
704 #ifndef PNG_USER_HEIGHT_MAX
705 # define PNG_USER_HEIGHT_MAX 1000000L
708 /* Added at libpng-1.2.43. To accept all valid PNGs no matter
709 * how large, set these two limits to 0.
711 #ifndef PNG_USER_CHUNK_CACHE_MAX
712 # define PNG_USER_CHUNK_CACHE_MAX 0
715 /* Added at libpng-1.2.43 */
716 #ifndef PNG_USER_CHUNK_MALLOC_MAX
717 # define PNG_USER_CHUNK_MALLOC_MAX 0
720 /* Added at libpng-1.4.0 */
721 #if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
722 # define PNG_IO_STATE_SUPPORTED
725 #ifndef PNG_LITERAL_SHARP
726 # define PNG_LITERAL_SHARP 0x23
728 #ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
729 # define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
731 #ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
732 # define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
734 #ifndef PNG_STRING_NEWLINE
735 #define PNG_STRING_NEWLINE "\n"
738 /* These are currently experimental features, define them if you want */
740 /* Very little testing */
742 #ifdef PNG_READ_SUPPORTED
743 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
744 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
749 /* This is only for PowerPC big-endian and 680x0 systems */
752 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
753 # define PNG_READ_BIG_ENDIAN_SUPPORTED
757 #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
758 # define PNG_USE_READ_MACROS
761 /* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
763 #if !defined(PNG_NO_POINTER_INDEXING) && \
764 !defined(PNG_POINTER_INDEXING_SUPPORTED)
765 # define PNG_POINTER_INDEXING_SUPPORTED
769 /* Any chunks you are not interested in, you can undef here. The
770 * ones that allocate memory may be expecially important (hIST,
771 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
775 /* The size of the png_text structure changed in libpng-1.0.6 when
776 * iTXt support was added. iTXt support was turned off by default through
777 * libpng-1.2.x, to support old apps that malloc the png_text structure
778 * instead of calling png_set_text() and letting libpng malloc it. It
779 * was turned on by default in libpng-1.4.0.
782 /* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
783 #if defined(PNG_READ_SUPPORTED) && \
784 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
785 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
786 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
789 /* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
790 #if defined(PNG_WRITE_SUPPORTED) && \
791 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
792 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
793 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
796 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
798 #ifdef PNG_NO_READ_TEXT
799 # define PNG_NO_READ_iTXt
800 # define PNG_NO_READ_tEXt
801 # define PNG_NO_READ_zTXt
804 #ifndef PNG_NO_READ_bKGD
805 # define PNG_READ_bKGD_SUPPORTED
806 # define PNG_bKGD_SUPPORTED
808 #ifndef PNG_NO_READ_cHRM
809 # define PNG_READ_cHRM_SUPPORTED
810 # define PNG_cHRM_SUPPORTED
812 #ifndef PNG_NO_READ_gAMA
813 # define PNG_READ_gAMA_SUPPORTED
814 # define PNG_gAMA_SUPPORTED
816 #ifndef PNG_NO_READ_hIST
817 # define PNG_READ_hIST_SUPPORTED
818 # define PNG_hIST_SUPPORTED
820 #ifndef PNG_NO_READ_iCCP
821 # define PNG_READ_iCCP_SUPPORTED
822 # define PNG_iCCP_SUPPORTED
824 #ifndef PNG_NO_READ_iTXt
825 # ifndef PNG_READ_iTXt_SUPPORTED
826 # define PNG_READ_iTXt_SUPPORTED
828 # ifndef PNG_iTXt_SUPPORTED
829 # define PNG_iTXt_SUPPORTED
832 #ifndef PNG_NO_READ_oFFs
833 # define PNG_READ_oFFs_SUPPORTED
834 # define PNG_oFFs_SUPPORTED
836 #ifndef PNG_NO_READ_pCAL
837 # define PNG_READ_pCAL_SUPPORTED
838 # define PNG_pCAL_SUPPORTED
840 #ifndef PNG_NO_READ_sCAL
841 # define PNG_READ_sCAL_SUPPORTED
842 # define PNG_sCAL_SUPPORTED
844 #ifndef PNG_NO_READ_pHYs
845 # define PNG_READ_pHYs_SUPPORTED
846 # define PNG_pHYs_SUPPORTED
848 #ifndef PNG_NO_READ_sBIT
849 # define PNG_READ_sBIT_SUPPORTED
850 # define PNG_sBIT_SUPPORTED
852 #ifndef PNG_NO_READ_sPLT
853 # define PNG_READ_sPLT_SUPPORTED
854 # define PNG_sPLT_SUPPORTED
856 #ifndef PNG_NO_READ_sRGB
857 # define PNG_READ_sRGB_SUPPORTED
858 # define PNG_sRGB_SUPPORTED
860 #ifndef PNG_NO_READ_tEXt
861 # define PNG_READ_tEXt_SUPPORTED
862 # define PNG_tEXt_SUPPORTED
864 #ifndef PNG_NO_READ_tIME
865 # define PNG_READ_tIME_SUPPORTED
866 # define PNG_tIME_SUPPORTED
868 #ifndef PNG_NO_READ_tRNS
869 # define PNG_READ_tRNS_SUPPORTED
870 # define PNG_tRNS_SUPPORTED
872 #ifndef PNG_NO_READ_zTXt
873 # define PNG_READ_zTXt_SUPPORTED
874 # define PNG_zTXt_SUPPORTED
876 #ifndef PNG_NO_READ_OPT_PLTE
877 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
878 #endif /* optional PLTE chunk in RGB and RGBA images */
879 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
880 defined(PNG_READ_zTXt_SUPPORTED)
881 # define PNG_READ_TEXT_SUPPORTED
882 # define PNG_TEXT_SUPPORTED
885 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
887 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
888 # ifndef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
889 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
891 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
892 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
894 # ifndef PNG_READ_USER_CHUNKS_SUPPORTED
895 # define PNG_READ_USER_CHUNKS_SUPPORTED
898 #ifndef PNG_NO_READ_USER_CHUNKS
899 # ifndef PNG_READ_USER_CHUNKS_SUPPORTED
900 # define PNG_READ_USER_CHUNKS_SUPPORTED
902 # ifndef PNG_USER_CHUNKS_SUPPORTED
903 # define PNG_USER_CHUNKS_SUPPORTED
906 #ifndef PNG_NO_HANDLE_AS_UNKNOWN
907 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
908 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
912 #ifdef PNG_WRITE_SUPPORTED
913 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
915 #ifdef PNG_NO_WRITE_TEXT
916 # define PNG_NO_WRITE_iTXt
917 # define PNG_NO_WRITE_tEXt
918 # define PNG_NO_WRITE_zTXt
920 #ifndef PNG_NO_WRITE_bKGD
921 # define PNG_WRITE_bKGD_SUPPORTED
922 # ifndef PNG_bKGD_SUPPORTED
923 # define PNG_bKGD_SUPPORTED
926 #ifndef PNG_NO_WRITE_cHRM
927 # define PNG_WRITE_cHRM_SUPPORTED
928 # ifndef PNG_cHRM_SUPPORTED
929 # define PNG_cHRM_SUPPORTED
932 #ifndef PNG_NO_WRITE_gAMA
933 # define PNG_WRITE_gAMA_SUPPORTED
934 # ifndef PNG_gAMA_SUPPORTED
935 # define PNG_gAMA_SUPPORTED
938 #ifndef PNG_NO_WRITE_hIST
939 # define PNG_WRITE_hIST_SUPPORTED
940 # ifndef PNG_hIST_SUPPORTED
941 # define PNG_hIST_SUPPORTED
944 #ifndef PNG_NO_WRITE_iCCP
945 # define PNG_WRITE_iCCP_SUPPORTED
946 # ifndef PNG_iCCP_SUPPORTED
947 # define PNG_iCCP_SUPPORTED
950 #ifndef PNG_NO_WRITE_iTXt
951 # ifndef PNG_WRITE_iTXt_SUPPORTED
952 # define PNG_WRITE_iTXt_SUPPORTED
954 # ifndef PNG_iTXt_SUPPORTED
955 # define PNG_iTXt_SUPPORTED
958 #ifndef PNG_NO_WRITE_oFFs
959 # define PNG_WRITE_oFFs_SUPPORTED
960 # ifndef PNG_oFFs_SUPPORTED
961 # define PNG_oFFs_SUPPORTED
964 #ifndef PNG_NO_WRITE_pCAL
965 # define PNG_WRITE_pCAL_SUPPORTED
966 # ifndef PNG_pCAL_SUPPORTED
967 # define PNG_pCAL_SUPPORTED
970 #ifndef PNG_NO_WRITE_sCAL
971 # define PNG_WRITE_sCAL_SUPPORTED
972 # ifndef PNG_sCAL_SUPPORTED
973 # define PNG_sCAL_SUPPORTED
976 #ifndef PNG_NO_WRITE_pHYs
977 # define PNG_WRITE_pHYs_SUPPORTED
978 # ifndef PNG_pHYs_SUPPORTED
979 # define PNG_pHYs_SUPPORTED
982 #ifndef PNG_NO_WRITE_sBIT
983 # define PNG_WRITE_sBIT_SUPPORTED
984 # ifndef PNG_sBIT_SUPPORTED
985 # define PNG_sBIT_SUPPORTED
988 #ifndef PNG_NO_WRITE_sPLT
989 # define PNG_WRITE_sPLT_SUPPORTED
990 # ifndef PNG_sPLT_SUPPORTED
991 # define PNG_sPLT_SUPPORTED
994 #ifndef PNG_NO_WRITE_sRGB
995 # define PNG_WRITE_sRGB_SUPPORTED
996 # ifndef PNG_sRGB_SUPPORTED
997 # define PNG_sRGB_SUPPORTED
1000 #ifndef PNG_NO_WRITE_tEXt
1001 # define PNG_WRITE_tEXt_SUPPORTED
1002 # ifndef PNG_tEXt_SUPPORTED
1003 # define PNG_tEXt_SUPPORTED
1006 #ifndef PNG_NO_WRITE_tIME
1007 # define PNG_WRITE_tIME_SUPPORTED
1008 # ifndef PNG_tIME_SUPPORTED
1009 # define PNG_tIME_SUPPORTED
1012 #ifndef PNG_NO_WRITE_tRNS
1013 # define PNG_WRITE_tRNS_SUPPORTED
1014 # ifndef PNG_tRNS_SUPPORTED
1015 # define PNG_tRNS_SUPPORTED
1018 #ifndef PNG_NO_WRITE_zTXt
1019 # define PNG_WRITE_zTXt_SUPPORTED
1020 # ifndef PNG_zTXt_SUPPORTED
1021 # define PNG_zTXt_SUPPORTED
1024 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1025 defined(PNG_WRITE_zTXt_SUPPORTED)
1026 # define PNG_WRITE_TEXT_SUPPORTED
1027 # ifndef PNG_TEXT_SUPPORTED
1028 # define PNG_TEXT_SUPPORTED
1032 #ifdef PNG_WRITE_tIME_SUPPORTED
1033 # ifndef PNG_NO_CONVERT_tIME
1035 /* The "tm" structure is not supported on WindowsCE */
1036 # ifndef PNG_CONVERT_tIME_SUPPORTED
1037 # define PNG_CONVERT_tIME_SUPPORTED
1043 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1045 #ifndef PNG_NO_WRITE_FILTER
1046 # ifndef PNG_WRITE_FILTER_SUPPORTED
1047 # define PNG_WRITE_FILTER_SUPPORTED
1051 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1052 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1053 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1054 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
1057 #ifndef PNG_NO_HANDLE_AS_UNKNOWN
1058 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1059 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1062 #endif /* PNG_WRITE_SUPPORTED */
1064 /* Turn this off to disable png_read_png() and
1065 * png_write_png() and leave the row_pointers member
1066 * out of the info structure.
1068 #ifndef PNG_NO_INFO_IMAGE
1069 # define PNG_INFO_IMAGE_SUPPORTED
1072 /* Need the time information for converting tIME chunks */
1073 #ifdef PNG_CONVERT_tIME_SUPPORTED
1074 /* "time.h" functions are not supported on WindowsCE */
1078 /* Some typedefs to get us started. These should be safe on most of the
1079 * common platforms. The typedefs should be at least as large as the
1080 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1081 * don't have to be exactly that size. Some compilers dislike passing
1082 * unsigned shorts as function parameters, so you may be better off using
1083 * unsigned int for png_uint_16.
1086 #if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL)
1087 typedef unsigned int png_uint_32;
1088 typedef int png_int_32;
1090 typedef unsigned long png_uint_32;
1091 typedef long png_int_32;
1093 typedef unsigned short png_uint_16;
1094 typedef short png_int_16;
1095 typedef unsigned char png_byte;
1097 #ifdef PNG_NO_SIZE_T
1098 typedef unsigned int png_size_t;
1100 typedef size_t png_size_t;
1102 #define png_sizeof(x) sizeof(x)
1104 /* The following is needed for medium model support. It cannot be in the
1105 * pngpriv.h header. Needs modification for other compilers besides
1106 * MSC. Model independent support declares all arrays and pointers to be
1107 * large using the far keyword. The zlib version used must also support
1108 * model independent data. As of version zlib 1.0.4, the necessary changes
1109 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1110 * changes that are needed. (Tim Wegner)
1113 /* Separate compiler dependencies (problem here is that zlib.h always
1114 * defines FAR. (SJT)
1117 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1122 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1123 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1124 # define PNG_MAX_MALLOC_64K
1129 # define USE_FAR_KEYWORD
1130 # endif /* LDATA != 1 */
1131 /* Possibly useful for moving data out of default segment.
1132 * Uncomment it if you want. Could also define FARDATA as
1133 * const if your compiler supports it. (SJT)
1134 # define FARDATA FAR
1136 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1137 #endif /* __BORLANDC__ */
1140 /* Suggest testing for specific compiler first before testing for
1141 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1142 * making reliance oncertain keywords suspect. (SJT)
1145 /* MSC Medium model */
1148 # define USE_FAR_KEYWORD
1149 # define FARDATA FAR
1154 /* SJT: default case */
1159 /* At this point FAR is always defined */
1164 /* Typedef for floating-point numbers that are converted
1165 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1166 typedef png_int_32 png_fixed_point;
1168 /* Add typedefs for pointers */
1169 typedef void FAR * png_voidp;
1170 typedef png_byte FAR * png_bytep;
1171 typedef png_uint_32 FAR * png_uint_32p;
1172 typedef png_int_32 FAR * png_int_32p;
1173 typedef png_uint_16 FAR * png_uint_16p;
1174 typedef png_int_16 FAR * png_int_16p;
1175 typedef PNG_CONST char FAR * png_const_charp;
1176 typedef char FAR * png_charp;
1177 typedef png_fixed_point FAR * png_fixed_point_p;
1179 #ifndef PNG_NO_STDIO
1180 typedef FILE * png_FILE_p;
1183 #ifdef PNG_FLOATING_POINT_SUPPORTED
1184 typedef double FAR * png_doublep;
1187 /* Pointers to pointers; i.e. arrays */
1188 typedef png_byte FAR * FAR * png_bytepp;
1189 typedef png_uint_32 FAR * FAR * png_uint_32pp;
1190 typedef png_int_32 FAR * FAR * png_int_32pp;
1191 typedef png_uint_16 FAR * FAR * png_uint_16pp;
1192 typedef png_int_16 FAR * FAR * png_int_16pp;
1193 typedef PNG_CONST char FAR * FAR * png_const_charpp;
1194 typedef char FAR * FAR * png_charpp;
1195 typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1196 #ifdef PNG_FLOATING_POINT_SUPPORTED
1197 typedef double FAR * FAR * png_doublepp;
1200 /* Pointers to pointers to pointers; i.e., pointer to array */
1201 typedef char FAR * FAR * FAR * png_charppp;
1203 /* Define PNG_BUILD_DLL if the module being built is a Windows
1206 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1207 * It is equivalent to Microsoft predefined macro _DLL that is
1208 * automatically defined when you compile using the share
1209 * version of the CRT (C Run-Time library)
1211 * The cygwin mods make this behavior a little different:
1212 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1213 * Define PNG_STATIC if you are building a static library for use with cygwin,
1214 * -or- if you are building an application that you want to link to the
1216 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1217 * the other flags is defined.
1220 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1226 # define PNGAPI __cdecl
1231 #define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
1233 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1234 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1235 * Don't ignore those warnings; you must also reset the default calling
1236 * convention in your compiler to match your PNGAPI, and you must build
1237 * zlib and your applications the same way you build libpng.
1240 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1241 # ifndef PNG_NO_MODULEDEF
1242 # define PNG_NO_MODULEDEF
1246 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1250 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1251 (( defined(_Windows) || defined(_WINDOWS) || \
1252 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1255 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1256 # define PNGAPI __cdecl
1258 # define PNGAPI _cdecl
1262 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1263 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1269 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1270 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1272 /* Borland/Microsoft */
1273 # if defined(_MSC_VER) || defined(__BORLANDC__)
1274 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1275 # define PNG_EXPORT PNG_EXPORT_TYPE1
1277 # define PNG_EXPORT PNG_EXPORT_TYPE2
1278 # ifdef PNG_BUILD_DLL
1279 # define PNG_IMPEXP __export
1281 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in VC++ */
1282 # endif /* Exists in Borland C++ for
1283 C++ classes (== huge) */
1288 # ifdef PNG_BUILD_DLL
1289 # define PNG_IMPEXP __declspec(dllexport)
1291 # define PNG_IMPEXP __declspec(dllimport)
1294 # endif /* PNG_IMPEXP */
1295 #else /* !(DLL || non-cygwin WINDOWS) */
1296 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1298 # define PNGAPI _System
1301 # if 0 /* ... other platforms, with other meanings */
1313 #ifdef PNG_BUILDSYMS
1315 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1320 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1323 /* Support for compiler specific function attributes. These are used
1324 * so that where compiler support is available incorrect use of API
1325 * functions in png.h will generate compiler warnings.
1327 * Added at libpng-1.2.41.
1330 #ifndef PNG_NO_PEDANTIC_WARNINGS
1331 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
1332 # define PNG_PEDANTIC_WARNINGS_SUPPORTED
1336 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
1337 /* Support for compiler specific function attributes. These are used
1338 * so that where compiler support is available incorrect use of API
1339 * functions in png.h will generate compiler warnings. Added at libpng
1343 # ifndef PNG_USE_RESULT
1344 # define PNG_USE_RESULT __attribute__((__warn_unused_result__))
1346 # ifndef PNG_NORETURN
1347 # define PNG_NORETURN __attribute__((__noreturn__))
1349 # ifndef PNG_ALLOCATED
1350 # define PNG_ALLOCATED __attribute__((__malloc__))
1353 /* This specifically protects structure members that should only be
1354 * accessed from within the library, therefore should be empty during
1357 # ifndef PNG_DEPRECATED
1358 # define PNG_DEPRECATED __attribute__((__deprecated__))
1360 # ifndef PNG_DEPSTRUCT
1361 # define PNG_DEPSTRUCT __attribute__((__deprecated__))
1363 # ifndef PNG_PRIVATE
1364 # if 0 /* Doesn't work so we use deprecated instead*/
1365 # define PNG_PRIVATE \
1366 __attribute__((warning("This function is not exported by libpng.")))
1368 # define PNG_PRIVATE \
1369 __attribute__((__deprecated__))
1371 # endif /* PNG_PRIVATE */
1372 # endif /* __GNUC__ */
1373 #endif /* PNG_PEDANTIC_WARNINGS */
1375 #ifndef PNG_DEPRECATED
1376 # define PNG_DEPRECATED /* Use of this function is deprecated */
1378 #ifndef PNG_USE_RESULT
1379 # define PNG_USE_RESULT /* The result of this function must be checked */
1381 #ifndef PNG_NORETURN
1382 # define PNG_NORETURN /* This function does not return */
1384 #ifndef PNG_ALLOCATED
1385 # define PNG_ALLOCATED /* The result of the function is new memory */
1387 #ifndef PNG_DEPSTRUCT
1388 # define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
1391 # define PNG_PRIVATE /* This is a private libpng function */
1394 /* Users may want to use these so they are not private. Any library
1395 * functions that are passed far data must be model-independent.
1398 /* memory model/platform independent fns */
1401 # define PNG_ABORT() ExitProcess(0)
1403 # define PNG_ABORT() abort()
1407 #ifdef USE_FAR_KEYWORD
1408 /* Use this to make far-to-near assignments */
1411 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1412 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1413 # define png_strcpy _fstrcpy
1414 # define png_strncpy _fstrncpy /* Added to v 1.2.6 */
1415 # define png_strlen _fstrlen
1416 # define png_memcmp _fmemcmp /* SJT: added */
1417 # define png_memcpy _fmemcpy
1418 # define png_memset _fmemset
1419 # define png_sprintf sprintf
1421 # ifdef _WINDOWS_ /* Favor Windows over C runtime fns */
1422 # define CVT_PTR(ptr) (ptr)
1423 # define CVT_PTR_NOCHECK(ptr) (ptr)
1424 # define png_strcpy lstrcpyA
1425 # define png_strncpy lstrcpynA
1426 # define png_strlen lstrlenA
1427 # define png_memcmp memcmp
1428 # define png_memcpy CopyMemory
1429 # define png_memset memset
1430 # define png_sprintf wsprintfA
1432 # define CVT_PTR(ptr) (ptr)
1433 # define CVT_PTR_NOCHECK(ptr) (ptr)
1434 # define png_strcpy strcpy
1435 # define png_strncpy strncpy /* Added to v 1.2.6 */
1436 # define png_strlen strlen
1437 # define png_memcmp memcmp /* SJT: added */
1438 # define png_memcpy memcpy
1439 # define png_memset memset
1440 # define png_sprintf sprintf
1441 # ifndef PNG_NO_SNPRINTF
1443 # define png_snprintf _snprintf /* Added to v 1.2.19 */
1444 # define png_snprintf2 _snprintf
1445 # define png_snprintf6 _snprintf
1447 # define png_snprintf snprintf /* Added to v 1.2.19 */
1448 # define png_snprintf2 snprintf
1449 # define png_snprintf6 snprintf
1452 /* You don't have or don't want to use snprintf(). Caution: Using
1453 * sprintf instead of snprintf exposes your application to accidental
1454 * or malevolent buffer overflows. If you don't have snprintf()
1455 * as a general rule you should provide one (you can get one from
1456 * Portable OpenSSH).
1458 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1459 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1460 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1461 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1466 /* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
1467 * and no smaller than png_uint_32. Casts from png_size_t or png_uint_32
1468 * to png_alloc_size_t are not necessary; in fact, it is recommended
1469 * not to use them at all so that the compiler can complain when something
1470 * turns out to be problematic.
1471 * Casts in the other direction (from png_alloc_size_t to png_size_t or
1472 * png_uint_32) should be explicitly applied; however, we do not expect
1473 * to encounter practical situations that require such conversions.
1475 #if defined(__TURBOC__) && !defined(__FLAT__)
1476 # define png_mem_alloc farmalloc
1477 # define png_mem_free farfree
1478 typedef unsigned long png_alloc_size_t;
1480 # if defined(_MSC_VER) && defined(MAXSEG_64K)
1481 # define png_mem_alloc(s) halloc(s, 1)
1482 # define png_mem_free hfree
1483 typedef unsigned long png_alloc_size_t;
1485 # if defined(_WINDOWS_) && (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
1486 # define png_mem_alloc(s) HeapAlloc(GetProcessHeap(), 0, s)
1487 # define png_mem_free(p) HeapFree(GetProcessHeap(), 0, p)
1488 typedef DWORD png_alloc_size_t;
1490 # define png_mem_alloc malloc
1491 # define png_mem_free free
1492 typedef png_size_t png_alloc_size_t;
1496 /* End of memory model/platform independent support */
1498 /* Just a little check that someone hasn't tried to define something
1501 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1502 # undef PNG_ZBUF_SIZE
1503 # define PNG_ZBUF_SIZE 65536L
1507 /* Added at libpng-1.2.8 */
1508 #endif /* PNG_VERSION_INFO_ONLY */
1510 #endif /* PNGCONF_H */