2 /* pngconf.h - machine configurable file for libpng
4 * libpng version 1.2.46 - July 9, 2011
5 * Copyright (c) 1998-2011 Glenn Randers-Pehrson
6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
9 * This code is released under the libpng license.
10 * For conditions of distribution and use, see the disclaimer
11 * and license in png.h
14 /* Any machine specific code is near the front of this file, so if you
15 * are configuring libpng for a machine, you may want to read the section
16 * starting here down to where it starts to typedef png_color, png_text,
26 * PNG_USER_CONFIG has to be defined on the compiler command line. This
27 * includes the resource compiler for Windows DLL configurations.
29 #ifdef PNG_USER_CONFIG
30 # ifndef PNG_USER_PRIVATEBUILD
31 # define PNG_USER_PRIVATEBUILD
36 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
37 #ifdef PNG_CONFIGURE_LIBPNG
44 * Added at libpng-1.2.8
46 * If you create a private DLL you need to define in "pngusr.h" the followings:
47 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
49 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
50 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
51 * distinguish your DLL from those of the official release. These
52 * correspond to the trailing letters that come after the version
53 * number and must match your private DLL name>
54 * e.g. // private DLL "libpng13gx.dll"
55 * #define PNG_USER_DLLFNAME_POSTFIX "gx"
57 * The following macros are also at your disposal if you want to complete the
58 * DLL VERSIONINFO structure.
59 * - PNG_USER_VERSIONINFO_COMMENTS
60 * - PNG_USER_VERSIONINFO_COMPANYNAME
61 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
66 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
67 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
71 # pragma message("PRIVATEBUILD is deprecated.\
72 Use PNG_USER_PRIVATEBUILD instead.")
73 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD
77 #ifndef PNG_VERSION_INFO_ONLY
79 /* End of material added to libpng-1.2.8 */
81 /* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble
82 Restored at libpng-1.2.21 */
83 #if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \
84 !defined(PNG_WARN_UNINITIALIZED_ROW)
85 # define PNG_WARN_UNINITIALIZED_ROW 1
87 /* End of material added at libpng-1.2.19/1.2.21 */
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 1.2.41. */
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 in libpng-1.2.41 */
130 #if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
131 # define PNG_WARNINGS_SUPPORTED
134 #if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
135 # define PNG_ERROR_TEXT_SUPPORTED
138 #if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
139 # define PNG_CHECK_cHRM_SUPPORTED
142 /* Enabled by default in 1.2.0. You can disable this if you don't need to
143 * support PNGs that are embedded in MNG datastreams
145 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
146 # ifndef PNG_MNG_FEATURES_SUPPORTED
147 # define PNG_MNG_FEATURES_SUPPORTED
151 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
152 # ifndef PNG_FLOATING_POINT_SUPPORTED
153 # define PNG_FLOATING_POINT_SUPPORTED
157 /* If you are running on a machine where you cannot allocate more
158 * than 64K of memory at once, uncomment this. While libpng will not
159 * normally need that much memory in a chunk (unless you load up a very
160 * large file), zlib needs to know how big of a chunk it can use, and
161 * libpng thus makes sure to check any memory allocation to verify it
162 * will fit into memory.
163 #define PNG_MAX_MALLOC_64K
165 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
166 # define PNG_MAX_MALLOC_64K
169 /* Special munging to support doing things the 'cygwin' way:
170 * 'Normal' png-on-win32 defines/defaults:
171 * PNG_BUILD_DLL -- building dll
172 * PNG_USE_DLL -- building an application, linking to dll
173 * (no define) -- building static library, or building an
174 * application and linking to the static lib
175 * 'Cygwin' defines/defaults:
176 * PNG_BUILD_DLL -- (ignored) building the dll
177 * (no define) -- (ignored) building an application, linking to the dll
178 * PNG_STATIC -- (ignored) building the static lib, or building an
179 * application that links to the static lib.
180 * ALL_STATIC -- (ignored) building various static libs, or building an
181 * application that links to the static libs.
183 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
184 * this bit of #ifdefs will define the 'correct' config variables based on
185 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
188 * Also, the precedence order is:
189 * ALL_STATIC (since we can't #undef something outside our namespace)
192 * (nothing) == PNG_USE_DLL
194 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
195 * of auto-import in binutils, we no longer need to worry about
196 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
197 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
198 * to __declspec() stuff. However, we DO need to worry about
199 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
200 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
204 # ifdef PNG_BUILD_DLL
205 # undef PNG_BUILD_DLL
217 # ifdef PNG_BUILD_DLL
247 /* This protects us against compilers that run on a windowing system
248 * and thus don't have or would rather us not use the stdio types:
249 * stdin, stdout, and stderr. The only one currently used is stderr
250 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
251 * prevent these from being compiled and used. #defining PNG_NO_STDIO
252 * will also prevent these, plus will prevent the entire set of stdio
253 * macros and functions (FILE *, printf, etc.) from being compiled and used,
254 * unless (PNG_DEBUG > 0) has been #defined.
256 * #define PNG_NO_CONSOLE_IO
257 * #define PNG_NO_STDIO
260 #if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
261 # define PNG_STDIO_SUPPORTED
265 # include <windows.h>
266 /* Console I/O functions are not supported on WindowsCE */
267 # define PNG_NO_CONSOLE_IO
268 /* abort() may not be supported on some/all Windows CE platforms */
269 # define PNG_ABORT() exit(-1)
276 # ifndef PNG_CONSOLE_IO_SUPPORTED
277 # ifndef PNG_NO_CONSOLE_IO
278 # define PNG_NO_CONSOLE_IO
284 # ifndef PNG_NO_CONSOLE_IO
285 # define PNG_NO_CONSOLE_IO
294 /* "stdio.h" functions are not supported on WindowsCE */
299 #if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
300 # define PNG_CONSOLE_IO_SUPPORTED
303 /* This macro protects us against machines that don't have function
304 * prototypes (ie K&R style headers). If your compiler does not handle
305 * function prototypes, define this macro and use the included ansi2knr.
306 * I've always been able to use _NO_PROTO as the indicator, but you may
307 * need to drag the empty declaration out in front of here, or change the
308 * ifdef to suit your own needs.
312 #ifdef OF /* zlib prototype munger */
313 # define PNGARG(arglist) OF(arglist)
317 # define PNGARG(arglist) ()
318 # ifndef PNG_TYPECAST_NULL
319 # define PNG_TYPECAST_NULL
322 # define PNGARG(arglist) arglist
323 #endif /* _NO_PROTO */
330 /* Try to determine if we are compiling on a Mac. Note that testing for
331 * just __MWERKS__ is not good enough, because the Codewarrior is now used
332 * on non-Mac platforms.
335 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
336 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
341 /* enough people need this for various reasons to include it here */
342 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
343 # include <sys/types.h>
346 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
347 # define PNG_SETJMP_SUPPORTED
350 #ifdef PNG_SETJMP_SUPPORTED
351 /* This is an attempt to force a single setjmp behaviour on Linux. If
352 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
354 * You can bypass this test if you know that your application uses exactly
355 * the same setjmp.h that was included when libpng was built. Only define
356 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
357 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
358 * while building a separate libpng library for general use.
361 # ifndef PNG_SKIP_SETJMP_CHECK
364 # define PNG_SAVE_BSD_SOURCE
368 /* If you encounter a compiler error here, see the explanation
369 * near the end of INSTALL.
371 __pngconf.h__ in libpng already includes setjmp.h;
372 __dont__ include it again.;
374 # endif /* __linux__ */
375 # endif /* PNG_SKIP_SETJMP_CHECK */
377 /* include setjmp.h for error handling */
381 # ifdef PNG_SAVE_BSD_SOURCE
385 # undef PNG_SAVE_BSD_SOURCE
387 # endif /* __linux__ */
388 #endif /* PNG_SETJMP_SUPPORTED */
391 # include <strings.h>
396 /* Other defines for things like memory and the like can go here. */
401 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
402 * aren't usually used outside the library (as far as I know), so it is
403 * debatable if they should be exported at all. In the future, when it is
404 * possible to have run-time registry of chunk-handling functions, some of
405 * these will be made available again.
406 #define PNG_EXTERN extern
410 /* Other defines specific to compilers can go here. Try to keep
411 * them inside an appropriate ifdef/endif pair for portability.
414 #ifdef PNG_FLOATING_POINT_SUPPORTED
416 /* We need to check that <math.h> hasn't already been included earlier
417 * as it seems it doesn't agree with <fp.h>, yet we should really use
418 * <fp.h> if possible.
420 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
426 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
427 /* Amiga SAS/C: We must include builtin FPU functions when compiling using
434 /* Codewarrior on NT has linking problems without this. */
435 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
436 # define PNG_ALWAYS_EXTERN
439 /* This provides the non-ANSI (far) memory allocation routines. */
440 #if defined(__TURBOC__) && defined(__MSDOS__)
445 /* I have no idea why is this necessary... */
446 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
447 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
451 /* This controls how fine the dithering gets. As this allocates
452 * a largish chunk of memory (32K), those who are not as concerned
453 * with dithering quality can decrease some or all of these.
455 #ifndef PNG_DITHER_RED_BITS
456 # define PNG_DITHER_RED_BITS 5
458 #ifndef PNG_DITHER_GREEN_BITS
459 # define PNG_DITHER_GREEN_BITS 5
461 #ifndef PNG_DITHER_BLUE_BITS
462 # define PNG_DITHER_BLUE_BITS 5
465 /* This controls how fine the gamma correction becomes when you
466 * are only interested in 8 bits anyway. Increasing this value
467 * results in more memory being used, and more pow() functions
468 * being called to fill in the gamma tables. Don't set this value
469 * less then 8, and even that may not work (I haven't tested it).
472 #ifndef PNG_MAX_GAMMA_8
473 # define PNG_MAX_GAMMA_8 11
476 /* This controls how much a difference in gamma we can tolerate before
477 * we actually start doing gamma conversion.
479 #ifndef PNG_GAMMA_THRESHOLD
480 # define PNG_GAMMA_THRESHOLD 0.05
483 #endif /* PNG_INTERNAL */
485 /* The following uses const char * instead of char * for error
486 * and warning message functions, so some compilers won't complain.
487 * If you do not want to use const, define PNG_NO_CONST here.
491 # define PNG_CONST const
496 /* The following defines give you the ability to remove code from the
497 * library that you will not be using. I wish I could figure out how to
498 * automate this, but I can't do that without making it seriously hard
499 * on the users. So if you are not using an ability, change the #define
500 * to and #undef, and that part of the library will not be compiled. If
501 * your linker can't find a function, you may want to make sure the
502 * ability is defined here. Some of these depend upon some others being
503 * defined. I haven't figured out all the interactions here, so you may
504 * have to experiment awhile to get everything to compile. If you are
505 * creating or using a shared library, you probably shouldn't touch this,
506 * as it will affect the size of the structures, and this will cause bad
507 * things to happen if the library and/or application ever change.
510 /* Any features you will not be using can be undef'ed here */
512 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
513 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
514 * on the compile line, then pick and choose which ones to define without
515 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
516 * if you only want to have a png-compliant reader/writer but don't need
517 * any of the extra transformations. This saves about 80 kbytes in a
518 * typical installation of the library. (PNG_NO_* form added in version
519 * 1.0.1c, for consistency)
522 /* The size of the png_text structure changed in libpng-1.0.6 when
523 * iTXt support was added. iTXt support was turned off by default through
524 * libpng-1.2.x, to support old apps that malloc the png_text structure
525 * instead of calling png_set_text() and letting libpng malloc it. It
526 * will be turned on by default in libpng-1.4.0.
529 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
530 # ifndef PNG_NO_iTXt_SUPPORTED
531 # define PNG_NO_iTXt_SUPPORTED
533 # ifndef PNG_NO_READ_iTXt
534 # define PNG_NO_READ_iTXt
536 # ifndef PNG_NO_WRITE_iTXt
537 # define PNG_NO_WRITE_iTXt
541 #if !defined(PNG_NO_iTXt_SUPPORTED)
542 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
543 # define PNG_READ_iTXt
545 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
546 # define PNG_WRITE_iTXt
550 /* The following support, added after version 1.0.0, can be turned off here en
551 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
552 * with old applications that require the length of png_struct and png_info
553 * to remain unchanged.
556 #ifdef PNG_LEGACY_SUPPORTED
557 # define PNG_NO_FREE_ME
558 # define PNG_NO_READ_UNKNOWN_CHUNKS
559 # define PNG_NO_WRITE_UNKNOWN_CHUNKS
560 # define PNG_NO_HANDLE_AS_UNKNOWN
561 # define PNG_NO_READ_USER_CHUNKS
562 # define PNG_NO_READ_iCCP
563 # define PNG_NO_WRITE_iCCP
564 # define PNG_NO_READ_iTXt
565 # define PNG_NO_WRITE_iTXt
566 # define PNG_NO_READ_sCAL
567 # define PNG_NO_WRITE_sCAL
568 # define PNG_NO_READ_sPLT
569 # define PNG_NO_WRITE_sPLT
570 # define PNG_NO_INFO_IMAGE
571 # define PNG_NO_READ_RGB_TO_GRAY
572 # define PNG_NO_READ_USER_TRANSFORM
573 # define PNG_NO_WRITE_USER_TRANSFORM
574 # define PNG_NO_USER_MEM
575 # define PNG_NO_READ_EMPTY_PLTE
576 # define PNG_NO_MNG_FEATURES
577 # define PNG_NO_FIXED_POINT_SUPPORTED
580 /* Ignore attempt to turn off both floating and fixed point support */
581 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
582 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
583 # define PNG_FIXED_POINT_SUPPORTED
586 #ifndef PNG_NO_FREE_ME
587 # define PNG_FREE_ME_SUPPORTED
590 #ifdef PNG_READ_SUPPORTED
592 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
593 !defined(PNG_NO_READ_TRANSFORMS)
594 # define PNG_READ_TRANSFORMS_SUPPORTED
597 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
598 # ifndef PNG_NO_READ_EXPAND
599 # define PNG_READ_EXPAND_SUPPORTED
601 # ifndef PNG_NO_READ_SHIFT
602 # define PNG_READ_SHIFT_SUPPORTED
604 # ifndef PNG_NO_READ_PACK
605 # define PNG_READ_PACK_SUPPORTED
607 # ifndef PNG_NO_READ_BGR
608 # define PNG_READ_BGR_SUPPORTED
610 # ifndef PNG_NO_READ_SWAP
611 # define PNG_READ_SWAP_SUPPORTED
613 # ifndef PNG_NO_READ_PACKSWAP
614 # define PNG_READ_PACKSWAP_SUPPORTED
616 # ifndef PNG_NO_READ_INVERT
617 # define PNG_READ_INVERT_SUPPORTED
619 # ifndef PNG_NO_READ_DITHER
620 # define PNG_READ_DITHER_SUPPORTED
622 # ifndef PNG_NO_READ_BACKGROUND
623 # define PNG_READ_BACKGROUND_SUPPORTED
625 # ifndef PNG_NO_READ_16_TO_8
626 # define PNG_READ_16_TO_8_SUPPORTED
628 # ifndef PNG_NO_READ_FILLER
629 # define PNG_READ_FILLER_SUPPORTED
631 # ifndef PNG_NO_READ_GAMMA
632 # define PNG_READ_GAMMA_SUPPORTED
634 # ifndef PNG_NO_READ_GRAY_TO_RGB
635 # define PNG_READ_GRAY_TO_RGB_SUPPORTED
637 # ifndef PNG_NO_READ_SWAP_ALPHA
638 # define PNG_READ_SWAP_ALPHA_SUPPORTED
640 # ifndef PNG_NO_READ_INVERT_ALPHA
641 # define PNG_READ_INVERT_ALPHA_SUPPORTED
643 # ifndef PNG_NO_READ_STRIP_ALPHA
644 # define PNG_READ_STRIP_ALPHA_SUPPORTED
646 # ifndef PNG_NO_READ_USER_TRANSFORM
647 # define PNG_READ_USER_TRANSFORM_SUPPORTED
649 # ifndef PNG_NO_READ_RGB_TO_GRAY
650 # define PNG_READ_RGB_TO_GRAY_SUPPORTED
652 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
654 /* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
655 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
656 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
657 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
658 #endif /* about interlacing capability! You'll */
659 /* still have interlacing unless you change the following define: */
660 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
662 /* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
663 #if !defined(PNG_NO_SEQUENTIAL_READ) && \
664 !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
665 !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
666 # define PNG_SEQUENTIAL_READ_SUPPORTED
669 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
671 #ifndef PNG_NO_READ_COMPOSITE_NODIV
672 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
673 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
677 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
678 /* Deprecated, will be removed from version 2.0.0.
679 Use PNG_MNG_FEATURES_SUPPORTED instead. */
680 #ifndef PNG_NO_READ_EMPTY_PLTE
681 # define PNG_READ_EMPTY_PLTE_SUPPORTED
685 #endif /* PNG_READ_SUPPORTED */
687 #ifdef PNG_WRITE_SUPPORTED
689 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
690 !defined(PNG_NO_WRITE_TRANSFORMS)
691 # define PNG_WRITE_TRANSFORMS_SUPPORTED
694 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
695 # ifndef PNG_NO_WRITE_SHIFT
696 # define PNG_WRITE_SHIFT_SUPPORTED
698 # ifndef PNG_NO_WRITE_PACK
699 # define PNG_WRITE_PACK_SUPPORTED
701 # ifndef PNG_NO_WRITE_BGR
702 # define PNG_WRITE_BGR_SUPPORTED
704 # ifndef PNG_NO_WRITE_SWAP
705 # define PNG_WRITE_SWAP_SUPPORTED
707 # ifndef PNG_NO_WRITE_PACKSWAP
708 # define PNG_WRITE_PACKSWAP_SUPPORTED
710 # ifndef PNG_NO_WRITE_INVERT
711 # define PNG_WRITE_INVERT_SUPPORTED
713 # ifndef PNG_NO_WRITE_FILLER
714 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
716 # ifndef PNG_NO_WRITE_SWAP_ALPHA
717 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED
720 # ifndef PNG_NO_WRITE_INVERT_ALPHA
721 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED
724 # ifndef PNG_NO_WRITE_USER_TRANSFORM
725 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED
727 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
729 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
730 !defined(PNG_WRITE_INTERLACING_SUPPORTED)
731 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
732 encoders, but can cause trouble
736 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
737 !defined(PNG_WRITE_WEIGHTED_FILTER) && \
738 defined(PNG_FLOATING_POINT_SUPPORTED)
739 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
742 #ifndef PNG_NO_WRITE_FLUSH
743 # define PNG_WRITE_FLUSH_SUPPORTED
746 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
747 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
748 #ifndef PNG_NO_WRITE_EMPTY_PLTE
749 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED
753 #endif /* PNG_WRITE_SUPPORTED */
756 # ifndef PNG_NO_ERROR_NUMBERS
757 # define PNG_ERROR_NUMBERS_SUPPORTED
759 #endif /* PNG_1_0_X */
761 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
762 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
763 # ifndef PNG_NO_USER_TRANSFORM_PTR
764 # define PNG_USER_TRANSFORM_PTR_SUPPORTED
769 # define PNG_TIME_RFC1123_SUPPORTED
772 /* This adds extra functions in pngget.c for accessing data from the
773 * info pointer (added in version 0.99)
774 * png_get_image_width()
775 * png_get_image_height()
776 * png_get_bit_depth()
777 * png_get_color_type()
778 * png_get_compression_type()
779 * png_get_filter_type()
780 * png_get_interlace_type()
781 * png_get_pixel_aspect_ratio()
782 * png_get_pixels_per_meter()
783 * png_get_x_offset_pixels()
784 * png_get_y_offset_pixels()
785 * png_get_x_offset_microns()
786 * png_get_y_offset_microns()
788 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
789 # define PNG_EASY_ACCESS_SUPPORTED
792 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
793 * and removed from version 1.2.20. The following will be removed
797 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
798 # ifndef PNG_OPTIMIZED_CODE_SUPPORTED
799 # define PNG_OPTIMIZED_CODE_SUPPORTED
803 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
804 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED
805 # define PNG_ASSEMBLER_CODE_SUPPORTED
808 # if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
809 /* work around 64-bit gcc compiler bugs in gcc-3.x */
810 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
811 # define PNG_NO_MMX_CODE
816 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
817 # define PNG_NO_MMX_CODE
821 # if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
822 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
823 # define PNG_NO_MMX_CODE
827 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
828 # define PNG_MMX_CODE_SUPPORTED
832 /* end of obsolete code to be removed from libpng-1.4.0 */
834 /* Added at libpng-1.2.0 */
836 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
837 # define PNG_USER_MEM_SUPPORTED
839 #endif /* PNG_1_0_X */
841 /* Added at libpng-1.2.6 */
843 # ifndef PNG_SET_USER_LIMITS_SUPPORTED
844 # ifndef PNG_NO_SET_USER_LIMITS
845 # define PNG_SET_USER_LIMITS_SUPPORTED
848 #endif /* PNG_1_0_X */
850 /* Added at libpng-1.0.53 and 1.2.43 */
851 #ifndef PNG_USER_LIMITS_SUPPORTED
852 # ifndef PNG_NO_USER_LIMITS
853 # define PNG_USER_LIMITS_SUPPORTED
857 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
858 * how large, set these limits to 0x7fffffffL
860 #ifndef PNG_USER_WIDTH_MAX
861 # define PNG_USER_WIDTH_MAX 1000000L
863 #ifndef PNG_USER_HEIGHT_MAX
864 # define PNG_USER_HEIGHT_MAX 1000000L
867 /* Added at libpng-1.2.43. To accept all valid PNGs no matter
868 * how large, set these two limits to 0.
870 #ifndef PNG_USER_CHUNK_CACHE_MAX
871 # define PNG_USER_CHUNK_CACHE_MAX 0
874 /* Added at libpng-1.2.43 */
875 #ifndef PNG_USER_CHUNK_MALLOC_MAX
876 # define PNG_USER_CHUNK_MALLOC_MAX 0
879 #ifndef PNG_LITERAL_SHARP
880 # define PNG_LITERAL_SHARP 0x23
882 #ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
883 # define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
885 #ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
886 # define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
889 /* Added at libpng-1.2.34 */
890 #ifndef PNG_STRING_NEWLINE
891 #define PNG_STRING_NEWLINE "\n"
894 /* These are currently experimental features, define them if you want */
896 /* very little testing */
898 #ifdef PNG_READ_SUPPORTED
899 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
900 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
905 /* This is only for PowerPC big-endian and 680x0 systems */
908 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
909 # define PNG_READ_BIG_ENDIAN_SUPPORTED
913 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */
915 #define PNG_NO_POINTER_INDEXING
918 #if !defined(PNG_NO_POINTER_INDEXING) && \
919 !defined(PNG_POINTER_INDEXING_SUPPORTED)
920 # define PNG_POINTER_INDEXING_SUPPORTED
923 /* These functions are turned off by default, as they will be phased out. */
925 #define PNG_USELESS_TESTS_SUPPORTED
926 #define PNG_CORRECT_PALETTE_SUPPORTED
929 /* Any chunks you are not interested in, you can undef here. The
930 * ones that allocate memory may be expecially important (hIST,
931 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
935 #if defined(PNG_READ_SUPPORTED) && \
936 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
937 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
938 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
941 #if defined(PNG_WRITE_SUPPORTED) && \
942 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
943 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
944 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
947 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
949 #ifdef PNG_NO_READ_TEXT
950 # define PNG_NO_READ_iTXt
951 # define PNG_NO_READ_tEXt
952 # define PNG_NO_READ_zTXt
954 #ifndef PNG_NO_READ_bKGD
955 # define PNG_READ_bKGD_SUPPORTED
956 # define PNG_bKGD_SUPPORTED
958 #ifndef PNG_NO_READ_cHRM
959 # define PNG_READ_cHRM_SUPPORTED
960 # define PNG_cHRM_SUPPORTED
962 #ifndef PNG_NO_READ_gAMA
963 # define PNG_READ_gAMA_SUPPORTED
964 # define PNG_gAMA_SUPPORTED
966 #ifndef PNG_NO_READ_hIST
967 # define PNG_READ_hIST_SUPPORTED
968 # define PNG_hIST_SUPPORTED
970 #ifndef PNG_NO_READ_iCCP
971 # define PNG_READ_iCCP_SUPPORTED
972 # define PNG_iCCP_SUPPORTED
974 #ifndef PNG_NO_READ_iTXt
975 # ifndef PNG_READ_iTXt_SUPPORTED
976 # define PNG_READ_iTXt_SUPPORTED
978 # ifndef PNG_iTXt_SUPPORTED
979 # define PNG_iTXt_SUPPORTED
982 #ifndef PNG_NO_READ_oFFs
983 # define PNG_READ_oFFs_SUPPORTED
984 # define PNG_oFFs_SUPPORTED
986 #ifndef PNG_NO_READ_pCAL
987 # define PNG_READ_pCAL_SUPPORTED
988 # define PNG_pCAL_SUPPORTED
990 #ifndef PNG_NO_READ_sCAL
991 # define PNG_READ_sCAL_SUPPORTED
992 # define PNG_sCAL_SUPPORTED
994 #ifndef PNG_NO_READ_pHYs
995 # define PNG_READ_pHYs_SUPPORTED
996 # define PNG_pHYs_SUPPORTED
998 #ifndef PNG_NO_READ_sBIT
999 # define PNG_READ_sBIT_SUPPORTED
1000 # define PNG_sBIT_SUPPORTED
1002 #ifndef PNG_NO_READ_sPLT
1003 # define PNG_READ_sPLT_SUPPORTED
1004 # define PNG_sPLT_SUPPORTED
1006 #ifndef PNG_NO_READ_sRGB
1007 # define PNG_READ_sRGB_SUPPORTED
1008 # define PNG_sRGB_SUPPORTED
1010 #ifndef PNG_NO_READ_tEXt
1011 # define PNG_READ_tEXt_SUPPORTED
1012 # define PNG_tEXt_SUPPORTED
1014 #ifndef PNG_NO_READ_tIME
1015 # define PNG_READ_tIME_SUPPORTED
1016 # define PNG_tIME_SUPPORTED
1018 #ifndef PNG_NO_READ_tRNS
1019 # define PNG_READ_tRNS_SUPPORTED
1020 # define PNG_tRNS_SUPPORTED
1022 #ifndef PNG_NO_READ_zTXt
1023 # define PNG_READ_zTXt_SUPPORTED
1024 # define PNG_zTXt_SUPPORTED
1026 #ifndef PNG_NO_READ_OPT_PLTE
1027 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
1028 #endif /* optional PLTE chunk in RGB and RGBA images */
1029 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
1030 defined(PNG_READ_zTXt_SUPPORTED)
1031 # define PNG_READ_TEXT_SUPPORTED
1032 # define PNG_TEXT_SUPPORTED
1035 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
1037 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
1038 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
1039 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1040 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
1043 #if !defined(PNG_NO_READ_USER_CHUNKS) && \
1044 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
1045 # define PNG_READ_USER_CHUNKS_SUPPORTED
1046 # define PNG_USER_CHUNKS_SUPPORTED
1047 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS
1048 # undef PNG_NO_READ_UNKNOWN_CHUNKS
1050 # ifdef PNG_NO_HANDLE_AS_UNKNOWN
1051 # undef PNG_NO_HANDLE_AS_UNKNOWN
1055 #ifndef PNG_NO_HANDLE_AS_UNKNOWN
1056 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1057 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1061 #ifdef PNG_WRITE_SUPPORTED
1062 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
1064 #ifdef PNG_NO_WRITE_TEXT
1065 # define PNG_NO_WRITE_iTXt
1066 # define PNG_NO_WRITE_tEXt
1067 # define PNG_NO_WRITE_zTXt
1069 #ifndef PNG_NO_WRITE_bKGD
1070 # define PNG_WRITE_bKGD_SUPPORTED
1071 # ifndef PNG_bKGD_SUPPORTED
1072 # define PNG_bKGD_SUPPORTED
1075 #ifndef PNG_NO_WRITE_cHRM
1076 # define PNG_WRITE_cHRM_SUPPORTED
1077 # ifndef PNG_cHRM_SUPPORTED
1078 # define PNG_cHRM_SUPPORTED
1081 #ifndef PNG_NO_WRITE_gAMA
1082 # define PNG_WRITE_gAMA_SUPPORTED
1083 # ifndef PNG_gAMA_SUPPORTED
1084 # define PNG_gAMA_SUPPORTED
1087 #ifndef PNG_NO_WRITE_hIST
1088 # define PNG_WRITE_hIST_SUPPORTED
1089 # ifndef PNG_hIST_SUPPORTED
1090 # define PNG_hIST_SUPPORTED
1093 #ifndef PNG_NO_WRITE_iCCP
1094 # define PNG_WRITE_iCCP_SUPPORTED
1095 # ifndef PNG_iCCP_SUPPORTED
1096 # define PNG_iCCP_SUPPORTED
1099 #ifndef PNG_NO_WRITE_iTXt
1100 # ifndef PNG_WRITE_iTXt_SUPPORTED
1101 # define PNG_WRITE_iTXt_SUPPORTED
1103 # ifndef PNG_iTXt_SUPPORTED
1104 # define PNG_iTXt_SUPPORTED
1107 #ifndef PNG_NO_WRITE_oFFs
1108 # define PNG_WRITE_oFFs_SUPPORTED
1109 # ifndef PNG_oFFs_SUPPORTED
1110 # define PNG_oFFs_SUPPORTED
1113 #ifndef PNG_NO_WRITE_pCAL
1114 # define PNG_WRITE_pCAL_SUPPORTED
1115 # ifndef PNG_pCAL_SUPPORTED
1116 # define PNG_pCAL_SUPPORTED
1119 #ifndef PNG_NO_WRITE_sCAL
1120 # define PNG_WRITE_sCAL_SUPPORTED
1121 # ifndef PNG_sCAL_SUPPORTED
1122 # define PNG_sCAL_SUPPORTED
1125 #ifndef PNG_NO_WRITE_pHYs
1126 # define PNG_WRITE_pHYs_SUPPORTED
1127 # ifndef PNG_pHYs_SUPPORTED
1128 # define PNG_pHYs_SUPPORTED
1131 #ifndef PNG_NO_WRITE_sBIT
1132 # define PNG_WRITE_sBIT_SUPPORTED
1133 # ifndef PNG_sBIT_SUPPORTED
1134 # define PNG_sBIT_SUPPORTED
1137 #ifndef PNG_NO_WRITE_sPLT
1138 # define PNG_WRITE_sPLT_SUPPORTED
1139 # ifndef PNG_sPLT_SUPPORTED
1140 # define PNG_sPLT_SUPPORTED
1143 #ifndef PNG_NO_WRITE_sRGB
1144 # define PNG_WRITE_sRGB_SUPPORTED
1145 # ifndef PNG_sRGB_SUPPORTED
1146 # define PNG_sRGB_SUPPORTED
1149 #ifndef PNG_NO_WRITE_tEXt
1150 # define PNG_WRITE_tEXt_SUPPORTED
1151 # ifndef PNG_tEXt_SUPPORTED
1152 # define PNG_tEXt_SUPPORTED
1155 #ifndef PNG_NO_WRITE_tIME
1156 # define PNG_WRITE_tIME_SUPPORTED
1157 # ifndef PNG_tIME_SUPPORTED
1158 # define PNG_tIME_SUPPORTED
1161 #ifndef PNG_NO_WRITE_tRNS
1162 # define PNG_WRITE_tRNS_SUPPORTED
1163 # ifndef PNG_tRNS_SUPPORTED
1164 # define PNG_tRNS_SUPPORTED
1167 #ifndef PNG_NO_WRITE_zTXt
1168 # define PNG_WRITE_zTXt_SUPPORTED
1169 # ifndef PNG_zTXt_SUPPORTED
1170 # define PNG_zTXt_SUPPORTED
1173 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1174 defined(PNG_WRITE_zTXt_SUPPORTED)
1175 # define PNG_WRITE_TEXT_SUPPORTED
1176 # ifndef PNG_TEXT_SUPPORTED
1177 # define PNG_TEXT_SUPPORTED
1181 #ifdef PNG_WRITE_tIME_SUPPORTED
1182 # ifndef PNG_NO_CONVERT_tIME
1184 /* The "tm" structure is not supported on WindowsCE */
1185 # ifndef PNG_CONVERT_tIME_SUPPORTED
1186 # define PNG_CONVERT_tIME_SUPPORTED
1192 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1194 #if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED)
1195 # define PNG_WRITE_FILTER_SUPPORTED
1198 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1199 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1200 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1201 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
1205 #ifndef PNG_NO_HANDLE_AS_UNKNOWN
1206 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1207 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1210 #endif /* PNG_WRITE_SUPPORTED */
1212 /* Turn this off to disable png_read_png() and
1213 * png_write_png() and leave the row_pointers member
1214 * out of the info structure.
1216 #ifndef PNG_NO_INFO_IMAGE
1217 # define PNG_INFO_IMAGE_SUPPORTED
1220 /* Need the time information for converting tIME chunks */
1221 #ifdef PNG_CONVERT_tIME_SUPPORTED
1222 /* "time.h" functions are not supported on WindowsCE */
1226 /* Some typedefs to get us started. These should be safe on most of the
1227 * common platforms. The typedefs should be at least as large as the
1228 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1229 * don't have to be exactly that size. Some compilers dislike passing
1230 * unsigned shorts as function parameters, so you may be better off using
1231 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
1232 * want to have unsigned int for png_uint_32 instead of unsigned long.
1235 typedef unsigned long png_uint_32;
1236 typedef long png_int_32;
1237 typedef unsigned short png_uint_16;
1238 typedef short png_int_16;
1239 typedef unsigned char png_byte;
1241 /* This is usually size_t. It is typedef'ed just in case you need it to
1242 change (I'm not sure if you will or not, so I thought I'd be safe) */
1244 typedef PNG_SIZE_T png_size_t;
1245 # define png_sizeof(x) png_convert_size(sizeof(x))
1247 typedef size_t png_size_t;
1248 # define png_sizeof(x) sizeof(x)
1251 /* The following is needed for medium model support. It cannot be in the
1252 * PNG_INTERNAL section. Needs modification for other compilers besides
1253 * MSC. Model independent support declares all arrays and pointers to be
1254 * large using the far keyword. The zlib version used must also support
1255 * model independent data. As of version zlib 1.0.4, the necessary changes
1256 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
1257 * changes that are needed. (Tim Wegner)
1260 /* Separate compiler dependencies (problem here is that zlib.h always
1261 defines FAR. (SJT) */
1263 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1268 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
1269 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1270 # define PNG_MAX_MALLOC_64K
1275 # define USE_FAR_KEYWORD
1276 # endif /* LDATA != 1 */
1277 /* Possibly useful for moving data out of default segment.
1278 * Uncomment it if you want. Could also define FARDATA as
1279 * const if your compiler supports it. (SJT)
1280 # define FARDATA FAR
1282 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */
1283 #endif /* __BORLANDC__ */
1286 /* Suggest testing for specific compiler first before testing for
1287 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1288 * making reliance oncertain keywords suspect. (SJT)
1291 /* MSC Medium model */
1294 # define USE_FAR_KEYWORD
1295 # define FARDATA FAR
1300 /* SJT: default case */
1305 /* At this point FAR is always defined */
1310 /* Typedef for floating-point numbers that are converted
1311 to fixed-point with a multiple of 100,000, e.g., int_gamma */
1312 typedef png_int_32 png_fixed_point;
1314 /* Add typedefs for pointers */
1315 typedef void FAR * png_voidp;
1316 typedef png_byte FAR * png_bytep;
1317 typedef png_uint_32 FAR * png_uint_32p;
1318 typedef png_int_32 FAR * png_int_32p;
1319 typedef png_uint_16 FAR * png_uint_16p;
1320 typedef png_int_16 FAR * png_int_16p;
1321 typedef PNG_CONST char FAR * png_const_charp;
1322 typedef char FAR * png_charp;
1323 typedef png_fixed_point FAR * png_fixed_point_p;
1325 #ifndef PNG_NO_STDIO
1327 typedef HANDLE png_FILE_p;
1329 typedef FILE * png_FILE_p;
1333 #ifdef PNG_FLOATING_POINT_SUPPORTED
1334 typedef double FAR * png_doublep;
1337 /* Pointers to pointers; i.e. arrays */
1338 typedef png_byte FAR * FAR * png_bytepp;
1339 typedef png_uint_32 FAR * FAR * png_uint_32pp;
1340 typedef png_int_32 FAR * FAR * png_int_32pp;
1341 typedef png_uint_16 FAR * FAR * png_uint_16pp;
1342 typedef png_int_16 FAR * FAR * png_int_16pp;
1343 typedef PNG_CONST char FAR * FAR * png_const_charpp;
1344 typedef char FAR * FAR * png_charpp;
1345 typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1346 #ifdef PNG_FLOATING_POINT_SUPPORTED
1347 typedef double FAR * FAR * png_doublepp;
1350 /* Pointers to pointers to pointers; i.e., pointer to array */
1351 typedef char FAR * FAR * FAR * png_charppp;
1353 #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1354 /* SPC - Is this stuff deprecated? */
1355 /* It'll be removed as of libpng-1.4.0 - GR-P */
1356 /* libpng typedefs for types in zlib. If zlib changes
1357 * or another compression library is used, then change these.
1358 * Eliminates need to change all the source files.
1360 typedef charf * png_zcharp;
1361 typedef charf * FAR * png_zcharpp;
1362 typedef z_stream FAR * png_zstreamp;
1363 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1366 * Define PNG_BUILD_DLL if the module being built is a Windows
1369 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1370 * It is equivalent to Microsoft predefined macro _DLL that is
1371 * automatically defined when you compile using the share
1372 * version of the CRT (C Run-Time library)
1374 * The cygwin mods make this behavior a little different:
1375 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1376 * Define PNG_STATIC if you are building a static library for use with cygwin,
1377 * -or- if you are building an application that you want to link to the
1379 * PNG_USE_DLL is defined by default (no user action needed) unless one of
1380 * the other flags is defined.
1383 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1386 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1387 * When building a static lib, default to no GLOBAL ARRAYS, but allow
1388 * command-line override
1392 # ifdef PNG_USE_GLOBAL_ARRAYS
1393 # undef PNG_USE_GLOBAL_ARRAYS
1395 # ifndef PNG_USE_LOCAL_ARRAYS
1396 # define PNG_USE_LOCAL_ARRAYS
1399 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
1400 # ifdef PNG_USE_GLOBAL_ARRAYS
1401 # undef PNG_USE_GLOBAL_ARRAYS
1405 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1406 # define PNG_USE_LOCAL_ARRAYS
1410 /* Do not use global arrays (helps with building DLL's)
1411 * They are no longer used in libpng itself, since version 1.0.5c,
1412 * but might be required for some pre-1.0.5c applications.
1414 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1415 # if defined(PNG_NO_GLOBAL_ARRAYS) || \
1416 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
1417 # define PNG_USE_LOCAL_ARRAYS
1419 # define PNG_USE_GLOBAL_ARRAYS
1425 # define PNGAPI __cdecl
1430 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1431 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1432 * Don't ignore those warnings; you must also reset the default calling
1433 * convention in your compiler to match your PNGAPI, and you must build
1434 * zlib and your applications the same way you build libpng.
1437 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1438 # ifndef PNG_NO_MODULEDEF
1439 # define PNG_NO_MODULEDEF
1443 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1447 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1448 (( defined(_Windows) || defined(_WINDOWS) || \
1449 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1452 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1453 # define PNGAPI __cdecl
1455 # define PNGAPI _cdecl
1459 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1460 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1466 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
1467 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
1469 /* Borland/Microsoft */
1470 # if defined(_MSC_VER) || defined(__BORLANDC__)
1471 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1472 # define PNG_EXPORT PNG_EXPORT_TYPE1
1474 # define PNG_EXPORT PNG_EXPORT_TYPE2
1475 # ifdef PNG_BUILD_DLL
1476 # define PNG_IMPEXP __export
1478 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
1480 # endif /* Exists in Borland C++ for
1481 C++ classes (== huge) */
1486 # ifdef PNG_BUILD_DLL
1487 # define PNG_IMPEXP __declspec(dllexport)
1489 # define PNG_IMPEXP __declspec(dllimport)
1492 # endif /* PNG_IMPEXP */
1493 #else /* !(DLL || non-cygwin WINDOWS) */
1494 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1496 # define PNGAPI _System
1499 # if 0 /* ... other platforms, with other meanings */
1511 #ifdef PNG_BUILDSYMS
1513 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1515 # ifdef PNG_USE_GLOBAL_ARRAYS
1516 # ifndef PNG_EXPORT_VAR
1517 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1523 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1526 #ifdef PNG_USE_GLOBAL_ARRAYS
1527 # ifndef PNG_EXPORT_VAR
1528 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1532 #ifdef PNG_PEDANTIC_WARNINGS
1533 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
1534 # define PNG_PEDANTIC_WARNINGS_SUPPORTED
1538 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
1539 /* Support for compiler specific function attributes. These are used
1540 * so that where compiler support is available incorrect use of API
1541 * functions in png.h will generate compiler warnings. Added at libpng
1545 # ifndef PNG_USE_RESULT
1546 # define PNG_USE_RESULT __attribute__((__warn_unused_result__))
1548 # ifndef PNG_NORETURN
1549 # define PNG_NORETURN __attribute__((__noreturn__))
1551 # ifndef PNG_ALLOCATED
1552 # define PNG_ALLOCATED __attribute__((__malloc__))
1555 /* This specifically protects structure members that should only be
1556 * accessed from within the library, therefore should be empty during
1559 # ifndef PNG_DEPRECATED
1560 # define PNG_DEPRECATED __attribute__((__deprecated__))
1562 # ifndef PNG_DEPSTRUCT
1563 # define PNG_DEPSTRUCT __attribute__((__deprecated__))
1565 # ifndef PNG_PRIVATE
1566 # if 0 /* Doesn't work so we use deprecated instead*/
1567 # define PNG_PRIVATE \
1568 __attribute__((warning("This function is not exported by libpng.")))
1570 # define PNG_PRIVATE \
1571 __attribute__((__deprecated__))
1573 # endif /* PNG_PRIVATE */
1574 # endif /* __GNUC__ */
1575 #endif /* PNG_PEDANTIC_WARNINGS */
1577 #ifndef PNG_DEPRECATED
1578 # define PNG_DEPRECATED /* Use of this function is deprecated */
1580 #ifndef PNG_USE_RESULT
1581 # define PNG_USE_RESULT /* The result of this function must be checked */
1583 #ifndef PNG_NORETURN
1584 # define PNG_NORETURN /* This function does not return */
1586 #ifndef PNG_ALLOCATED
1587 # define PNG_ALLOCATED /* The result of the function is new memory */
1589 #ifndef PNG_DEPSTRUCT
1590 # define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
1593 # define PNG_PRIVATE /* This is a private libpng function */
1596 /* User may want to use these so they are not in PNG_INTERNAL. Any library
1597 * functions that are passed far data must be model independent.
1601 # define PNG_ABORT() abort()
1604 #ifdef PNG_SETJMP_SUPPORTED
1605 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1607 # define png_jmpbuf(png_ptr) \
1608 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1611 #ifdef USE_FAR_KEYWORD /* memory model independent fns */
1612 /* Use this to make far-to-near assignments */
1615 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1616 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1617 # define png_snprintf _fsnprintf /* Added to v 1.2.19 */
1618 # define png_strlen _fstrlen
1619 # define png_memcmp _fmemcmp /* SJT: added */
1620 # define png_memcpy _fmemcpy
1621 # define png_memset _fmemset
1622 #else /* Use the usual functions */
1623 # define CVT_PTR(ptr) (ptr)
1624 # define CVT_PTR_NOCHECK(ptr) (ptr)
1625 # ifndef PNG_NO_SNPRINTF
1627 # define png_snprintf _snprintf /* Added to v 1.2.19 */
1628 # define png_snprintf2 _snprintf
1629 # define png_snprintf6 _snprintf
1631 # define png_snprintf snprintf /* Added to v 1.2.19 */
1632 # define png_snprintf2 snprintf
1633 # define png_snprintf6 snprintf
1636 /* You don't have or don't want to use snprintf(). Caution: Using
1637 * sprintf instead of snprintf exposes your application to accidental
1638 * or malevolent buffer overflows. If you don't have snprintf()
1639 * as a general rule you should provide one (you can get one from
1640 * Portable OpenSSH).
1642 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1643 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1644 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1645 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1647 # define png_strlen strlen
1648 # define png_memcmp memcmp /* SJT: added */
1649 # define png_memcpy memcpy
1650 # define png_memset memset
1652 /* End of memory model independent support */
1654 /* Just a little check that someone hasn't tried to define something
1657 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1658 # undef PNG_ZBUF_SIZE
1659 # define PNG_ZBUF_SIZE 65536L
1662 /* Added at libpng-1.2.8 */
1663 #endif /* PNG_VERSION_INFO_ONLY */
1665 #endif /* PNGCONF_H */