2 /* pngconf.h - machine configurable file for libpng
4 * libpng version 1.2.8 - December 3, 2004
5 * For conditions of distribution and use, see copyright notice in png.h
6 * Copyright (c) 1998-2004 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.)
11 /* Any machine specific code is near the front of this file, so if you
12 * are configuring libpng for a machine, you may want to read the section
13 * starting here down to where it starts to typedef png_color, png_text,
23 * PNG_USER_CONFIG has to be defined on the compiler command line. This
24 * includes the resource compiler for Windows DLL configurations.
26 #ifdef PNG_USER_CONFIG
31 * Added at libpng-1.2.8
33 * If you create a private DLL you need to define in "pngusr.h" the followings:
34 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
36 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
37 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
38 * distinguish your DLL from those of the official release. These
39 * correspond to the trailing letters that come after the version
40 * number and must match your private DLL name>
41 * e.g. // private DLL "libpng13gx.dll"
42 * #define PNG_USER_DLLFNAME_POSTFIX "gx"
44 * The following macros are also at your disposal if you want to complete the
45 * DLL VERSIONINFO structure.
46 * - PNG_USER_VERSIONINFO_COMMENTS
47 * - PNG_USER_VERSIONINFO_COMPANYNAME
48 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
53 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
54 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
58 # pragma message("PRIVATEBUILD is deprecated. Use\
59 PNG_USER_PRIVATEBUILD instead.")
60 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD
64 #ifndef PNG_VERSION_INFO_ONLY
66 /* End of material added to libpng-1.2.8 */
68 /* This is the size of the compression buffer, and thus the size of
69 * an IDAT chunk. Make this whatever size you feel is best for your
70 * machine. One of these will be allocated per png_struct. When this
71 * is full, it writes the data to the disk, and does some other
72 * calculations. Making this an extremely small size will slow
73 * the library down, but you may want to experiment to determine
74 * where it becomes significant, if you are concerned with memory
75 * usage. Note that zlib allocates at least 32Kb also. For readers,
76 * this describes the size of the buffer available to read the data in.
77 * Unless this gets smaller than the size of a row (compressed),
78 * it should not make much difference how big this is.
82 # define PNG_ZBUF_SIZE 8192
85 /* Enable if you want a write-only libpng */
87 #ifndef PNG_NO_READ_SUPPORTED
88 # define PNG_READ_SUPPORTED
91 /* Enable if you want a read-only libpng */
93 #ifndef PNG_NO_WRITE_SUPPORTED
94 # define PNG_WRITE_SUPPORTED
97 /* Enabled by default in 1.2.0. You can disable this if you don't need to
98 support PNGs that are embedded in MNG datastreams */
99 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
100 # ifndef PNG_MNG_FEATURES_SUPPORTED
101 # define PNG_MNG_FEATURES_SUPPORTED
105 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
106 # ifndef PNG_FLOATING_POINT_SUPPORTED
107 # define PNG_FLOATING_POINT_SUPPORTED
111 /* If you are running on a machine where you cannot allocate more
112 * than 64K of memory at once, uncomment this. While libpng will not
113 * normally need that much memory in a chunk (unless you load up a very
114 * large file), zlib needs to know how big of a chunk it can use, and
115 * libpng thus makes sure to check any memory allocation to verify it
116 * will fit into memory.
117 #define PNG_MAX_MALLOC_64K
119 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
120 # define PNG_MAX_MALLOC_64K
123 /* Special munging to support doing things the 'cygwin' way:
124 * 'Normal' png-on-win32 defines/defaults:
125 * PNG_BUILD_DLL -- building dll
126 * PNG_USE_DLL -- building an application, linking to dll
127 * (no define) -- building static library, or building an
128 * application and linking to the static lib
129 * 'Cygwin' defines/defaults:
130 * PNG_BUILD_DLL -- (ignored) building the dll
131 * (no define) -- (ignored) building an application, linking to the dll
132 * PNG_STATIC -- (ignored) building the static lib, or building an
133 * application that links to the static lib.
134 * ALL_STATIC -- (ignored) building various static libs, or building an
135 * application that links to the static libs.
137 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
138 * this bit of #ifdefs will define the 'correct' config variables based on
139 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
142 * Also, the precedence order is:
143 * ALL_STATIC (since we can't #undef something outside our namespace)
146 * (nothing) == PNG_USE_DLL
148 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
149 * of auto-import in binutils, we no longer need to worry about
150 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
151 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
152 * to __declspec() stuff. However, we DO need to worry about
153 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
154 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
156 #if defined(__CYGWIN__)
157 # if defined(ALL_STATIC)
158 # if defined(PNG_BUILD_DLL)
159 # undef PNG_BUILD_DLL
161 # if defined(PNG_USE_DLL)
164 # if defined(PNG_DLL)
167 # if !defined(PNG_STATIC)
171 # if defined (PNG_BUILD_DLL)
172 # if defined(PNG_STATIC)
175 # if defined(PNG_USE_DLL)
178 # if !defined(PNG_DLL)
182 # if defined(PNG_STATIC)
183 # if defined(PNG_USE_DLL)
186 # if defined(PNG_DLL)
190 # if !defined(PNG_USE_DLL)
193 # if !defined(PNG_DLL)
201 /* This protects us against compilers that run on a windowing system
202 * and thus don't have or would rather us not use the stdio types:
203 * stdin, stdout, and stderr. The only one currently used is stderr
204 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
205 * prevent these from being compiled and used. #defining PNG_NO_STDIO
206 * will also prevent these, plus will prevent the entire set of stdio
207 * macros and functions (FILE *, printf, etc.) from being compiled and used,
208 * unless (PNG_DEBUG > 0) has been #defined.
210 * #define PNG_NO_CONSOLE_IO
211 * #define PNG_NO_STDIO
214 #if defined(_WIN32_WCE)
215 # include <windows.h>
216 /* Console I/O functions are not supported on WindowsCE */
217 # define PNG_NO_CONSOLE_IO
224 # ifndef PNG_CONSOLE_IO_SUPPORTED
225 # ifndef PNG_NO_CONSOLE_IO
226 # define PNG_NO_CONSOLE_IO
232 # ifndef PNG_NO_CONSOLE_IO
233 # define PNG_NO_CONSOLE_IO
241 # if !defined(_WIN32_WCE)
242 /* "stdio.h" functions are not supported on WindowsCE */
247 /* This macro protects us against machines that don't have function
248 * prototypes (ie K&R style headers). If your compiler does not handle
249 * function prototypes, define this macro and use the included ansi2knr.
250 * I've always been able to use _NO_PROTO as the indicator, but you may
251 * need to drag the empty declaration out in front of here, or change the
252 * ifdef to suit your own needs.
256 #ifdef OF /* zlib prototype munger */
257 # define PNGARG(arglist) OF(arglist)
261 # define PNGARG(arglist) ()
262 # ifndef PNG_TYPECAST_NULL
263 # define PNG_TYPECAST_NULL
266 # define PNGARG(arglist) arglist
267 #endif /* _NO_PROTO */
273 /* Try to determine if we are compiling on a Mac. Note that testing for
274 * just __MWERKS__ is not good enough, because the Codewarrior is now used
275 * on non-Mac platforms.
278 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
279 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
284 /* enough people need this for various reasons to include it here */
285 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
286 # include <sys/types.h>
289 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
290 # define PNG_SETJMP_SUPPORTED
293 #ifdef PNG_SETJMP_SUPPORTED
294 /* This is an attempt to force a single setjmp behaviour on Linux. If
295 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
300 # define PNG_SAVE_BSD_SOURCE
304 /* If you encounter a compiler error here, see the explanation
305 * near the end of INSTALL.
307 __png.h__ already includes setjmp.h;
308 __dont__ include it again.;
310 # endif /* __linux__ */
312 /* include setjmp.h for error handling */
316 # ifdef PNG_SAVE_BSD_SOURCE
318 # undef PNG_SAVE_BSD_SOURCE
320 # endif /* __linux__ */
321 #endif /* PNG_SETJMP_SUPPORTED */
324 # include <strings.h>
329 /* Other defines for things like memory and the like can go here. */
334 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
335 * aren't usually used outside the library (as far as I know), so it is
336 * debatable if they should be exported at all. In the future, when it is
337 * possible to have run-time registry of chunk-handling functions, some of
338 * these will be made available again.
339 #define PNG_EXTERN extern
343 /* Other defines specific to compilers can go here. Try to keep
344 * them inside an appropriate ifdef/endif pair for portability.
347 #if defined(PNG_FLOATING_POINT_SUPPORTED)
349 /* We need to check that <math.h> hasn't already been included earlier
350 * as it seems it doesn't agree with <fp.h>, yet we should really use
351 * <fp.h> if possible.
353 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
359 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
360 /* Amiga SAS/C: We must include builtin FPU functions when compiling using
367 /* Codewarrior on NT has linking problems without this. */
368 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
369 # define PNG_ALWAYS_EXTERN
372 /* This provides the non-ANSI (far) memory allocation routines. */
373 #if defined(__TURBOC__) && defined(__MSDOS__)
378 /* I have no idea why is this necessary... */
379 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
380 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
384 /* This controls how fine the dithering gets. As this allocates
385 * a largish chunk of memory (32K), those who are not as concerned
386 * with dithering quality can decrease some or all of these.
388 #ifndef PNG_DITHER_RED_BITS
389 # define PNG_DITHER_RED_BITS 5
391 #ifndef PNG_DITHER_GREEN_BITS
392 # define PNG_DITHER_GREEN_BITS 5
394 #ifndef PNG_DITHER_BLUE_BITS
395 # define PNG_DITHER_BLUE_BITS 5
398 /* This controls how fine the gamma correction becomes when you
399 * are only interested in 8 bits anyway. Increasing this value
400 * results in more memory being used, and more pow() functions
401 * being called to fill in the gamma tables. Don't set this value
402 * less then 8, and even that may not work (I haven't tested it).
405 #ifndef PNG_MAX_GAMMA_8
406 # define PNG_MAX_GAMMA_8 11
409 /* This controls how much a difference in gamma we can tolerate before
410 * we actually start doing gamma conversion.
412 #ifndef PNG_GAMMA_THRESHOLD
413 # define PNG_GAMMA_THRESHOLD 0.05
416 #endif /* PNG_INTERNAL */
418 /* The following uses const char * instead of char * for error
419 * and warning message functions, so some compilers won't complain.
420 * If you do not want to use const, define PNG_NO_CONST here.
424 # define PNG_CONST const
429 /* The following defines give you the ability to remove code from the
430 * library that you will not be using. I wish I could figure out how to
431 * automate this, but I can't do that without making it seriously hard
432 * on the users. So if you are not using an ability, change the #define
433 * to and #undef, and that part of the library will not be compiled. If
434 * your linker can't find a function, you may want to make sure the
435 * ability is defined here. Some of these depend upon some others being
436 * defined. I haven't figured out all the interactions here, so you may
437 * have to experiment awhile to get everything to compile. If you are
438 * creating or using a shared library, you probably shouldn't touch this,
439 * as it will affect the size of the structures, and this will cause bad
440 * things to happen if the library and/or application ever change.
443 /* Any features you will not be using can be undef'ed here */
445 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
446 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
447 * on the compile line, then pick and choose which ones to define without
448 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
449 * if you only want to have a png-compliant reader/writer but don't need
450 * any of the extra transformations. This saves about 80 kbytes in a
451 * typical installation of the library. (PNG_NO_* form added in version
452 * 1.0.1c, for consistency)
455 /* The size of the png_text structure changed in libpng-1.0.6 when
456 * iTXt is supported. It is turned off by default, to support old apps
457 * that malloc the png_text structure instead of calling png_set_text()
458 * and letting libpng malloc it. It will be turned on by default in
462 #ifndef PNG_iTXt_SUPPORTED
463 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
464 # define PNG_NO_READ_iTXt
466 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
467 # define PNG_NO_WRITE_iTXt
471 /* The following support, added after version 1.0.0, can be turned off here en
472 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
473 * with old applications that require the length of png_struct and png_info
474 * to remain unchanged.
477 #ifdef PNG_LEGACY_SUPPORTED
478 # define PNG_NO_FREE_ME
479 # define PNG_NO_READ_UNKNOWN_CHUNKS
480 # define PNG_NO_WRITE_UNKNOWN_CHUNKS
481 # define PNG_NO_READ_USER_CHUNKS
482 # define PNG_NO_READ_iCCP
483 # define PNG_NO_WRITE_iCCP
484 # define PNG_NO_READ_iTXt
485 # define PNG_NO_WRITE_iTXt
486 # define PNG_NO_READ_sCAL
487 # define PNG_NO_WRITE_sCAL
488 # define PNG_NO_READ_sPLT
489 # define PNG_NO_WRITE_sPLT
490 # define PNG_NO_INFO_IMAGE
491 # define PNG_NO_READ_RGB_TO_GRAY
492 # define PNG_NO_READ_USER_TRANSFORM
493 # define PNG_NO_WRITE_USER_TRANSFORM
494 # define PNG_NO_USER_MEM
495 # define PNG_NO_READ_EMPTY_PLTE
496 # define PNG_NO_MNG_FEATURES
497 # define PNG_NO_FIXED_POINT_SUPPORTED
500 /* Ignore attempt to turn off both floating and fixed point support */
501 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
502 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
503 # define PNG_FIXED_POINT_SUPPORTED
506 #ifndef PNG_NO_FREE_ME
507 # define PNG_FREE_ME_SUPPORTED
510 #if defined(PNG_READ_SUPPORTED)
512 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
513 !defined(PNG_NO_READ_TRANSFORMS)
514 # define PNG_READ_TRANSFORMS_SUPPORTED
517 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
518 # ifndef PNG_NO_READ_EXPAND
519 # define PNG_READ_EXPAND_SUPPORTED
521 # ifndef PNG_NO_READ_SHIFT
522 # define PNG_READ_SHIFT_SUPPORTED
524 # ifndef PNG_NO_READ_PACK
525 # define PNG_READ_PACK_SUPPORTED
527 # ifndef PNG_NO_READ_BGR
528 # define PNG_READ_BGR_SUPPORTED
530 # ifndef PNG_NO_READ_SWAP
531 # define PNG_READ_SWAP_SUPPORTED
533 # ifndef PNG_NO_READ_PACKSWAP
534 # define PNG_READ_PACKSWAP_SUPPORTED
536 # ifndef PNG_NO_READ_INVERT
537 # define PNG_READ_INVERT_SUPPORTED
539 # ifndef PNG_NO_READ_DITHER
540 # define PNG_READ_DITHER_SUPPORTED
542 # ifndef PNG_NO_READ_BACKGROUND
543 # define PNG_READ_BACKGROUND_SUPPORTED
545 # ifndef PNG_NO_READ_16_TO_8
546 # define PNG_READ_16_TO_8_SUPPORTED
548 # ifndef PNG_NO_READ_FILLER
549 # define PNG_READ_FILLER_SUPPORTED
551 # ifndef PNG_NO_READ_GAMMA
552 # define PNG_READ_GAMMA_SUPPORTED
554 # ifndef PNG_NO_READ_GRAY_TO_RGB
555 # define PNG_READ_GRAY_TO_RGB_SUPPORTED
557 # ifndef PNG_NO_READ_SWAP_ALPHA
558 # define PNG_READ_SWAP_ALPHA_SUPPORTED
560 # ifndef PNG_NO_READ_INVERT_ALPHA
561 # define PNG_READ_INVERT_ALPHA_SUPPORTED
563 # ifndef PNG_NO_READ_STRIP_ALPHA
564 # define PNG_READ_STRIP_ALPHA_SUPPORTED
566 # ifndef PNG_NO_READ_USER_TRANSFORM
567 # define PNG_READ_USER_TRANSFORM_SUPPORTED
569 # ifndef PNG_NO_READ_RGB_TO_GRAY
570 # define PNG_READ_RGB_TO_GRAY_SUPPORTED
572 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
574 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
575 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
576 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
577 #endif /* about interlacing capability! You'll */
578 /* still have interlacing unless you change the following line: */
580 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
582 #ifndef PNG_NO_READ_COMPOSITE_NODIV
583 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
584 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
588 /* Deprecated, will be removed from version 2.0.0.
589 Use PNG_MNG_FEATURES_SUPPORTED instead. */
590 #ifndef PNG_NO_READ_EMPTY_PLTE
591 # define PNG_READ_EMPTY_PLTE_SUPPORTED
594 #endif /* PNG_READ_SUPPORTED */
596 #if defined(PNG_WRITE_SUPPORTED)
598 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
599 !defined(PNG_NO_WRITE_TRANSFORMS)
600 # define PNG_WRITE_TRANSFORMS_SUPPORTED
603 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
604 # ifndef PNG_NO_WRITE_SHIFT
605 # define PNG_WRITE_SHIFT_SUPPORTED
607 # ifndef PNG_NO_WRITE_PACK
608 # define PNG_WRITE_PACK_SUPPORTED
610 # ifndef PNG_NO_WRITE_BGR
611 # define PNG_WRITE_BGR_SUPPORTED
613 # ifndef PNG_NO_WRITE_SWAP
614 # define PNG_WRITE_SWAP_SUPPORTED
616 # ifndef PNG_NO_WRITE_PACKSWAP
617 # define PNG_WRITE_PACKSWAP_SUPPORTED
619 # ifndef PNG_NO_WRITE_INVERT
620 # define PNG_WRITE_INVERT_SUPPORTED
622 # ifndef PNG_NO_WRITE_FILLER
623 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
625 # ifndef PNG_NO_WRITE_SWAP_ALPHA
626 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED
628 # ifndef PNG_NO_WRITE_INVERT_ALPHA
629 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED
631 # ifndef PNG_NO_WRITE_USER_TRANSFORM
632 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED
634 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
636 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
637 encoders, but can cause trouble
640 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
641 defined(PNG_FLOATING_POINT_SUPPORTED)
642 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
645 #ifndef PNG_NO_WRITE_FLUSH
646 # define PNG_WRITE_FLUSH_SUPPORTED
649 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
650 #ifndef PNG_NO_WRITE_EMPTY_PLTE
651 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED
654 #endif /* PNG_WRITE_SUPPORTED */
657 # ifndef PNG_NO_ERROR_NUMBERS
658 # define PNG_ERROR_NUMBERS_SUPPORTED
660 #endif /* PNG_1_0_X */
662 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
663 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
664 # ifndef PNG_NO_USER_TRANSFORM_PTR
665 # define PNG_USER_TRANSFORM_PTR_SUPPORTED
670 # define PNG_TIME_RFC1123_SUPPORTED
673 /* This adds extra functions in pngget.c for accessing data from the
674 * info pointer (added in version 0.99)
675 * png_get_image_width()
676 * png_get_image_height()
677 * png_get_bit_depth()
678 * png_get_color_type()
679 * png_get_compression_type()
680 * png_get_filter_type()
681 * png_get_interlace_type()
682 * png_get_pixel_aspect_ratio()
683 * png_get_pixels_per_meter()
684 * png_get_x_offset_pixels()
685 * png_get_y_offset_pixels()
686 * png_get_x_offset_microns()
687 * png_get_y_offset_microns()
689 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
690 # define PNG_EASY_ACCESS_SUPPORTED
693 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
694 even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */
695 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
696 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED
697 # define PNG_ASSEMBLER_CODE_SUPPORTED
699 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
700 # define PNG_MMX_CODE_SUPPORTED
704 /* If you are sure that you don't need thread safety and you are compiling
705 with PNG_USE_PNGCCRD for an MMX application, you can define this for
706 faster execution. See pnggccrd.c.
707 #define PNG_THREAD_UNSAFE_OK
710 #if !defined(PNG_1_0_X)
711 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
712 # define PNG_USER_MEM_SUPPORTED
714 #endif /* PNG_1_0_X */
716 /* Added at libpng-1.2.6 */
717 #if !defined(PNG_1_0_X)
718 #ifndef PNG_SET_USER_LIMITS_SUPPORTED
719 #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
720 # define PNG_SET_USER_LIMITS_SUPPORTED
723 #endif /* PNG_1_0_X */
725 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
726 * how large, set these limits to 0x7fffffffL
728 #ifndef PNG_USER_WIDTH_MAX
729 # define PNG_USER_WIDTH_MAX 1000000L
731 #ifndef PNG_USER_HEIGHT_MAX
732 # define PNG_USER_HEIGHT_MAX 1000000L
735 /* These are currently experimental features, define them if you want */
737 /* very little testing */
739 #ifdef PNG_READ_SUPPORTED
740 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
741 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
746 /* This is only for PowerPC big-endian and 680x0 systems */
749 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
750 # define PNG_READ_BIG_ENDIAN_SUPPORTED
754 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */
756 #define PNG_NO_POINTER_INDEXING
759 /* These functions are turned off by default, as they will be phased out. */
761 #define PNG_USELESS_TESTS_SUPPORTED
762 #define PNG_CORRECT_PALETTE_SUPPORTED
765 /* Any chunks you are not interested in, you can undef here. The
766 * ones that allocate memory may be expecially important (hIST,
767 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
771 #if defined(PNG_READ_SUPPORTED) && \
772 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
773 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
774 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
777 #if defined(PNG_WRITE_SUPPORTED) && \
778 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
779 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
780 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
783 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
785 #ifdef PNG_NO_READ_TEXT
786 # define PNG_NO_READ_iTXt
787 # define PNG_NO_READ_tEXt
788 # define PNG_NO_READ_zTXt
790 #ifndef PNG_NO_READ_bKGD
791 # define PNG_READ_bKGD_SUPPORTED
792 # define PNG_bKGD_SUPPORTED
794 #ifndef PNG_NO_READ_cHRM
795 # define PNG_READ_cHRM_SUPPORTED
796 # define PNG_cHRM_SUPPORTED
798 #ifndef PNG_NO_READ_gAMA
799 # define PNG_READ_gAMA_SUPPORTED
800 # define PNG_gAMA_SUPPORTED
802 #ifndef PNG_NO_READ_hIST
803 # define PNG_READ_hIST_SUPPORTED
804 # define PNG_hIST_SUPPORTED
806 #ifndef PNG_NO_READ_iCCP
807 # define PNG_READ_iCCP_SUPPORTED
808 # define PNG_iCCP_SUPPORTED
810 #ifndef PNG_NO_READ_iTXt
811 # ifndef PNG_READ_iTXt_SUPPORTED
812 # define PNG_READ_iTXt_SUPPORTED
814 # ifndef PNG_iTXt_SUPPORTED
815 # define PNG_iTXt_SUPPORTED
818 #ifndef PNG_NO_READ_oFFs
819 # define PNG_READ_oFFs_SUPPORTED
820 # define PNG_oFFs_SUPPORTED
822 #ifndef PNG_NO_READ_pCAL
823 # define PNG_READ_pCAL_SUPPORTED
824 # define PNG_pCAL_SUPPORTED
826 #ifndef PNG_NO_READ_sCAL
827 # define PNG_READ_sCAL_SUPPORTED
828 # define PNG_sCAL_SUPPORTED
830 #ifndef PNG_NO_READ_pHYs
831 # define PNG_READ_pHYs_SUPPORTED
832 # define PNG_pHYs_SUPPORTED
834 #ifndef PNG_NO_READ_sBIT
835 # define PNG_READ_sBIT_SUPPORTED
836 # define PNG_sBIT_SUPPORTED
838 #ifndef PNG_NO_READ_sPLT
839 # define PNG_READ_sPLT_SUPPORTED
840 # define PNG_sPLT_SUPPORTED
842 #ifndef PNG_NO_READ_sRGB
843 # define PNG_READ_sRGB_SUPPORTED
844 # define PNG_sRGB_SUPPORTED
846 #ifndef PNG_NO_READ_tEXt
847 # define PNG_READ_tEXt_SUPPORTED
848 # define PNG_tEXt_SUPPORTED
850 #ifndef PNG_NO_READ_tIME
851 # define PNG_READ_tIME_SUPPORTED
852 # define PNG_tIME_SUPPORTED
854 #ifndef PNG_NO_READ_tRNS
855 # define PNG_READ_tRNS_SUPPORTED
856 # define PNG_tRNS_SUPPORTED
858 #ifndef PNG_NO_READ_zTXt
859 # define PNG_READ_zTXt_SUPPORTED
860 # define PNG_zTXt_SUPPORTED
862 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
863 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
864 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
865 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
867 # ifndef PNG_NO_HANDLE_AS_UNKNOWN
868 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
871 #if !defined(PNG_NO_READ_USER_CHUNKS) && \
872 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
873 # define PNG_READ_USER_CHUNKS_SUPPORTED
874 # define PNG_USER_CHUNKS_SUPPORTED
875 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS
876 # undef PNG_NO_READ_UNKNOWN_CHUNKS
878 # ifdef PNG_NO_HANDLE_AS_UNKNOWN
879 # undef PNG_NO_HANDLE_AS_UNKNOWN
882 #ifndef PNG_NO_READ_OPT_PLTE
883 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
884 #endif /* optional PLTE chunk in RGB and RGBA images */
885 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
886 defined(PNG_READ_zTXt_SUPPORTED)
887 # define PNG_READ_TEXT_SUPPORTED
888 # define PNG_TEXT_SUPPORTED
891 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
893 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
895 #ifdef PNG_NO_WRITE_TEXT
896 # define PNG_NO_WRITE_iTXt
897 # define PNG_NO_WRITE_tEXt
898 # define PNG_NO_WRITE_zTXt
900 #ifndef PNG_NO_WRITE_bKGD
901 # define PNG_WRITE_bKGD_SUPPORTED
902 # ifndef PNG_bKGD_SUPPORTED
903 # define PNG_bKGD_SUPPORTED
906 #ifndef PNG_NO_WRITE_cHRM
907 # define PNG_WRITE_cHRM_SUPPORTED
908 # ifndef PNG_cHRM_SUPPORTED
909 # define PNG_cHRM_SUPPORTED
912 #ifndef PNG_NO_WRITE_gAMA
913 # define PNG_WRITE_gAMA_SUPPORTED
914 # ifndef PNG_gAMA_SUPPORTED
915 # define PNG_gAMA_SUPPORTED
918 #ifndef PNG_NO_WRITE_hIST
919 # define PNG_WRITE_hIST_SUPPORTED
920 # ifndef PNG_hIST_SUPPORTED
921 # define PNG_hIST_SUPPORTED
924 #ifndef PNG_NO_WRITE_iCCP
925 # define PNG_WRITE_iCCP_SUPPORTED
926 # ifndef PNG_iCCP_SUPPORTED
927 # define PNG_iCCP_SUPPORTED
930 #ifndef PNG_NO_WRITE_iTXt
931 # ifndef PNG_WRITE_iTXt_SUPPORTED
932 # define PNG_WRITE_iTXt_SUPPORTED
934 # ifndef PNG_iTXt_SUPPORTED
935 # define PNG_iTXt_SUPPORTED
938 #ifndef PNG_NO_WRITE_oFFs
939 # define PNG_WRITE_oFFs_SUPPORTED
940 # ifndef PNG_oFFs_SUPPORTED
941 # define PNG_oFFs_SUPPORTED
944 #ifndef PNG_NO_WRITE_pCAL
945 # define PNG_WRITE_pCAL_SUPPORTED
946 # ifndef PNG_pCAL_SUPPORTED
947 # define PNG_pCAL_SUPPORTED
950 #ifndef PNG_NO_WRITE_sCAL
951 # define PNG_WRITE_sCAL_SUPPORTED
952 # ifndef PNG_sCAL_SUPPORTED
953 # define PNG_sCAL_SUPPORTED
956 #ifndef PNG_NO_WRITE_pHYs
957 # define PNG_WRITE_pHYs_SUPPORTED
958 # ifndef PNG_pHYs_SUPPORTED
959 # define PNG_pHYs_SUPPORTED
962 #ifndef PNG_NO_WRITE_sBIT
963 # define PNG_WRITE_sBIT_SUPPORTED
964 # ifndef PNG_sBIT_SUPPORTED
965 # define PNG_sBIT_SUPPORTED
968 #ifndef PNG_NO_WRITE_sPLT
969 # define PNG_WRITE_sPLT_SUPPORTED
970 # ifndef PNG_sPLT_SUPPORTED
971 # define PNG_sPLT_SUPPORTED
974 #ifndef PNG_NO_WRITE_sRGB
975 # define PNG_WRITE_sRGB_SUPPORTED
976 # ifndef PNG_sRGB_SUPPORTED
977 # define PNG_sRGB_SUPPORTED
980 #ifndef PNG_NO_WRITE_tEXt
981 # define PNG_WRITE_tEXt_SUPPORTED
982 # ifndef PNG_tEXt_SUPPORTED
983 # define PNG_tEXt_SUPPORTED
986 #ifndef PNG_NO_WRITE_tIME
987 # define PNG_WRITE_tIME_SUPPORTED
988 # ifndef PNG_tIME_SUPPORTED
989 # define PNG_tIME_SUPPORTED
992 #ifndef PNG_NO_WRITE_tRNS
993 # define PNG_WRITE_tRNS_SUPPORTED
994 # ifndef PNG_tRNS_SUPPORTED
995 # define PNG_tRNS_SUPPORTED
998 #ifndef PNG_NO_WRITE_zTXt
999 # define PNG_WRITE_zTXt_SUPPORTED
1000 # ifndef PNG_zTXt_SUPPORTED
1001 # define PNG_zTXt_SUPPORTED
1004 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1005 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1006 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1007 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
1009 # ifndef PNG_NO_HANDLE_AS_UNKNOWN
1010 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1011 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1015 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1016 defined(PNG_WRITE_zTXt_SUPPORTED)
1017 # define PNG_WRITE_TEXT_SUPPORTED
1018 # ifndef PNG_TEXT_SUPPORTED
1019 # define PNG_TEXT_SUPPORTED
1023 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1025 /* Turn this off to disable png_read_png() and
1026 * png_write_png() and leave the row_pointers member
1027 * out of the info structure.
1029 #ifndef PNG_NO_INFO_IMAGE
1030 # define PNG_INFO_IMAGE_SUPPORTED
1033 /* need the time information for reading tIME chunks */
1034 #if defined(PNG_tIME_SUPPORTED)
1035 # if !defined(_WIN32_WCE)
1036 /* "time.h" functions are not supported on WindowsCE */
1041 /* Some typedefs to get us started. These should be safe on most of the
1042 * common platforms. The typedefs should be at least as large as the
1043 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1044 * don't have to be exactly that size. Some compilers dislike passing
1045 * unsigned shorts as function parameters, so you may be better off using
1046 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
1047 * want to have unsigned int for png_uint_32 instead of unsigned long.
1050 typedef unsigned long png_uint_32;
1051 typedef long png_int_32;
1052 typedef unsigned short png_uint_16;
1053 typedef short png_int_16;
1054 typedef unsigned char png_byte;
1056 /* This is usually size_t. It is typedef'ed just in case you need it to
1057 change (I'm not sure if you will or not, so I thought I'd be safe) */
1059 typedef PNG_SIZE_T png_size_t;
1060 # define png_sizeof(x) png_convert_size(sizeof (x))
1062 typedef size_t png_size_t;
1063 # define png_sizeof(x) sizeof (x)
1066 /* The following is needed for medium model support. It cannot be in the
1067 * PNG_INTERNAL section. Needs modification for other compilers besides
1068 * MSC. Model independent support declares all arrays and pointers to be
1069 * large using the far keyword. The zlib version used must also support
1070 * model independent data. As of version zlib 1.0.4, the necessary changes
1071 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1072 * changes that are needed. (Tim Wegner)
1075 /* Separate compiler dependencies (problem here is that zlib.h always
1076 defines FAR. (SJT) */
1078 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1083 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1084 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1085 # define PNG_MAX_MALLOC_64K
1090 # define USE_FAR_KEYWORD
1091 # endif /* LDATA != 1 */
1092 /* Possibly useful for moving data out of default segment.
1093 * Uncomment it if you want. Could also define FARDATA as
1094 * const if your compiler supports it. (SJT)
1095 # define FARDATA FAR
1097 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1098 #endif /* __BORLANDC__ */
1101 /* Suggest testing for specific compiler first before testing for
1102 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1103 * making reliance oncertain keywords suspect. (SJT)
1106 /* MSC Medium model */
1108 # if defined(M_I86MM)
1109 # define USE_FAR_KEYWORD
1110 # define FARDATA FAR
1115 /* SJT: default case */
1120 /* At this point FAR is always defined */
1125 /* Typedef for floating-point numbers that are converted
1126 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1127 typedef png_int_32 png_fixed_point;
1129 /* Add typedefs for pointers */
1130 typedef void FAR * png_voidp;
1131 typedef png_byte FAR * png_bytep;
1132 typedef png_uint_32 FAR * png_uint_32p;
1133 typedef png_int_32 FAR * png_int_32p;
1134 typedef png_uint_16 FAR * png_uint_16p;
1135 typedef png_int_16 FAR * png_int_16p;
1136 typedef PNG_CONST char FAR * png_const_charp;
1137 typedef char FAR * png_charp;
1138 typedef png_fixed_point FAR * png_fixed_point_p;
1140 #ifndef PNG_NO_STDIO
1141 #if defined(_WIN32_WCE)
1142 typedef HANDLE png_FILE_p;
1144 typedef FILE * png_FILE_p;
1148 #ifdef PNG_FLOATING_POINT_SUPPORTED
1149 typedef double FAR * png_doublep;
1152 /* Pointers to pointers; i.e. arrays */
1153 typedef png_byte FAR * FAR * png_bytepp;
1154 typedef png_uint_32 FAR * FAR * png_uint_32pp;
1155 typedef png_int_32 FAR * FAR * png_int_32pp;
1156 typedef png_uint_16 FAR * FAR * png_uint_16pp;
1157 typedef png_int_16 FAR * FAR * png_int_16pp;
1158 typedef PNG_CONST char FAR * FAR * png_const_charpp;
1159 typedef char FAR * FAR * png_charpp;
1160 typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1161 #ifdef PNG_FLOATING_POINT_SUPPORTED
1162 typedef double FAR * FAR * png_doublepp;
1165 /* Pointers to pointers to pointers; i.e., pointer to array */
1166 typedef char FAR * FAR * FAR * png_charppp;
1168 #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1169 /* SPC - Is this stuff deprecated? */
1170 /* It'll be removed as of libpng-1.3.0 - GR-P */
1171 /* libpng typedefs for types in zlib. If zlib changes
1172 * or another compression library is used, then change these.
1173 * Eliminates need to change all the source files.
1175 typedef charf * png_zcharp;
1176 typedef charf * FAR * png_zcharpp;
1177 typedef z_stream FAR * png_zstreamp;
1178 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1181 * Define PNG_BUILD_DLL if the module being built is a Windows
1184 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1185 * It is equivalent to Microsoft predefined macro _DLL that is
1186 * automatically defined when you compile using the share
1187 * version of the CRT (C Run-Time library)
1189 * The cygwin mods make this behavior a little different:
1190 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1191 * Define PNG_STATIC if you are building a static library for use with cygwin,
1192 * -or- if you are building an application that you want to link to the
1194 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1195 * the other flags is defined.
1198 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1201 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1202 * When building a static lib, default to no GLOBAL ARRAYS, but allow
1203 * command-line override
1205 #if defined(__CYGWIN__)
1206 # if !defined(PNG_STATIC)
1207 # if defined(PNG_USE_GLOBAL_ARRAYS)
1208 # undef PNG_USE_GLOBAL_ARRAYS
1210 # if !defined(PNG_USE_LOCAL_ARRAYS)
1211 # define PNG_USE_LOCAL_ARRAYS
1214 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
1215 # if defined(PNG_USE_GLOBAL_ARRAYS)
1216 # undef PNG_USE_GLOBAL_ARRAYS
1220 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1221 # define PNG_USE_LOCAL_ARRAYS
1225 /* Do not use global arrays (helps with building DLL's)
1226 * They are no longer used in libpng itself, since version 1.0.5c,
1227 * but might be required for some pre-1.0.5c applications.
1229 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1230 # if defined(PNG_NO_GLOBAL_ARRAYS) || (defined(__GNUC__) && defined(PNG_DLL))
1231 # define PNG_USE_LOCAL_ARRAYS
1233 # define PNG_USE_GLOBAL_ARRAYS
1237 #if defined(__CYGWIN__)
1239 # define PNGAPI __cdecl
1244 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1245 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1246 * Don't ignore those warnings; you must also reset the default calling
1247 * convention in your compiler to match your PNGAPI, and you must build
1248 * zlib and your applications the same way you build libpng.
1251 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1252 # ifndef PNG_NO_MODULEDEF
1253 # define PNG_NO_MODULEDEF
1257 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1261 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1262 (( defined(_Windows) || defined(_WINDOWS) || \
1263 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1266 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1267 # define PNGAPI __cdecl
1269 # define PNGAPI _cdecl
1273 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1274 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1278 # if !defined(PNG_IMPEXP)
1280 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1281 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1283 /* Borland/Microsoft */
1284 # if defined(_MSC_VER) || defined(__BORLANDC__)
1285 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1286 # define PNG_EXPORT PNG_EXPORT_TYPE1
1288 # define PNG_EXPORT PNG_EXPORT_TYPE2
1289 # if defined(PNG_BUILD_DLL)
1290 # define PNG_IMPEXP __export
1292 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
1294 # endif /* Exists in Borland C++ for
1295 C++ classes (== huge) */
1299 # if !defined(PNG_IMPEXP)
1300 # if defined(PNG_BUILD_DLL)
1301 # define PNG_IMPEXP __declspec(dllexport)
1303 # define PNG_IMPEXP __declspec(dllimport)
1306 # endif /* PNG_IMPEXP */
1307 #else /* !(DLL || non-cygwin WINDOWS) */
1308 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1310 # define PNGAPI _System
1313 # if 0 /* ... other platforms, with other meanings */
1325 #ifdef PNG_BUILDSYMS
1327 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1329 # ifdef PNG_USE_GLOBAL_ARRAYS
1330 # ifndef PNG_EXPORT_VAR
1331 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1337 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1340 #ifdef PNG_USE_GLOBAL_ARRAYS
1341 # ifndef PNG_EXPORT_VAR
1342 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1346 /* User may want to use these so they are not in PNG_INTERNAL. Any library
1347 * functions that are passed far data must be model independent.
1351 # define PNG_ABORT() abort()
1354 #ifdef PNG_SETJMP_SUPPORTED
1355 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1357 # define png_jmpbuf(png_ptr) \
1358 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1361 #if defined(USE_FAR_KEYWORD) /* memory model independent fns */
1362 /* use this to make far-to-near assignments */
1365 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1366 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1367 # define png_strcpy _fstrcpy
1368 # define png_strncpy _fstrncpy /* Added to v 1.2.6 */
1369 # define png_strlen _fstrlen
1370 # define png_memcmp _fmemcmp /* SJT: added */
1371 # define png_memcpy _fmemcpy
1372 # define png_memset _fmemset
1373 #else /* use the usual functions */
1374 # define CVT_PTR(ptr) (ptr)
1375 # define CVT_PTR_NOCHECK(ptr) (ptr)
1376 # define png_strcpy strcpy
1377 # define png_strncpy strncpy /* Added to v 1.2.6 */
1378 # define png_strlen strlen
1379 # define png_memcmp memcmp /* SJT: added */
1380 # define png_memcpy memcpy
1381 # define png_memset memset
1383 /* End of memory model independent support */
1385 /* Just a little check that someone hasn't tried to define something
1388 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1389 # undef PNG_ZBUF_SIZE
1390 # define PNG_ZBUF_SIZE 65536L
1393 #ifdef PNG_READ_SUPPORTED
1394 /* Prior to libpng-1.0.9, this block was in pngasmrd.h */
1395 #if defined(PNG_INTERNAL)
1397 /* These are the default thresholds before the MMX code kicks in; if either
1398 * rowbytes or bitdepth is below the threshold, plain C code is used. These
1399 * can be overridden at runtime via the png_set_mmx_thresholds() call in
1400 * libpng 1.2.0 and later. The values below were chosen by Intel.
1403 #ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT
1404 # define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 128 /* >= */
1406 #ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT
1407 # define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 9 /* >= */
1410 /* Set this in the makefile for VC++ on Pentium, not here. */
1411 /* Platform must be Pentium. Makefile must assemble and load pngvcrd.c .
1412 * MMX will be detected at run time and used if present.
1414 #ifdef PNG_USE_PNGVCRD
1415 # define PNG_HAVE_ASSEMBLER_COMBINE_ROW
1416 # define PNG_HAVE_ASSEMBLER_READ_INTERLACE
1417 # define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
1420 /* Set this in the makefile for gcc/as on Pentium, not here. */
1421 /* Platform must be Pentium. Makefile must assemble and load pnggccrd.c .
1422 * MMX will be detected at run time and used if present.
1424 #ifdef PNG_USE_PNGGCCRD
1425 # define PNG_HAVE_ASSEMBLER_COMBINE_ROW
1426 # define PNG_HAVE_ASSEMBLER_READ_INTERLACE
1427 # define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
1429 /* - see pnggccrd.c for info about what is currently enabled */
1431 #endif /* PNG_INTERNAL */
1432 #endif /* PNG_READ_SUPPORTED */
1434 /* Added at libpng-1.2.8 */
1435 #endif /* PNG_VERSION_INFO_ONLY */
1437 #endif /* PNGCONF_H */