725 lines
21 KiB
C
725 lines
21 KiB
C
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/* pngconf.h - machine configurable file for libpng
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*
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* libpng 1.0.4 - September 18, 1999
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* For conditions of distribution and use, see copyright notice in png.h
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* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
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* Copyright (c) 1996, 1997 Andreas Dilger
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* Copyright (c) 1998, 1999 Glenn Randers-Pehrson
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*/
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/* Any machine specific code is near the front of this file, so if you
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* are configuring libpng for a machine, you may want to read the section
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* starting here down to where it starts to typedef png_color, png_text,
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* and png_info.
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*/
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#ifndef PNGCONF_H
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#define PNGCONF_H
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/* This is the size of the compression buffer, and thus the size of
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* an IDAT chunk. Make this whatever size you feel is best for your
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* machine. One of these will be allocated per png_struct. When this
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* is full, it writes the data to the disk, and does some other
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* calculations. Making this an extremely small size will slow
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* the library down, but you may want to experiment to determine
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* where it becomes significant, if you are concerned with memory
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* usage. Note that zlib allocates at least 32Kb also. For readers,
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* this describes the size of the buffer available to read the data in.
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* Unless this gets smaller than the size of a row (compressed),
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* it should not make much difference how big this is.
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*/
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#ifndef PNG_ZBUF_SIZE
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#define PNG_ZBUF_SIZE 8192
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#endif
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/* If you are running on a machine where you cannot allocate more
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* than 64K of memory at once, uncomment this. While libpng will not
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* normally need that much memory in a chunk (unless you load up a very
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* large file), zlib needs to know how big of a chunk it can use, and
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* libpng thus makes sure to check any memory allocation to verify it
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* will fit into memory.
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#define PNG_MAX_MALLOC_64K
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*/
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#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
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#define PNG_MAX_MALLOC_64K
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#endif
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/* This protects us against compilers that run on a windowing system
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* and thus don't have or would rather us not use the stdio types:
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* stdin, stdout, and stderr. The only one currently used is stderr
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* in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
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* prevent these from being compiled and used. #defining PNG_NO_STDIO
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* will also prevent these, plus will prevent the entire set of stdio
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* macros and functions (FILE *, printf, etc.) from being compiled and used,
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* unless (PNG_DEBUG > 0) has been #defined.
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*
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* #define PNG_NO_CONSOLE_IO
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* #define PNG_NO_STDIO
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*/
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# ifdef PNG_NO_STDIO
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# ifndef PNG_NO_CONSOLE_IO
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# define PNG_NO_CONSOLE_IO
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# endif
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# ifdef PNG_DEBUG
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# if (PNG_DEBUG > 0)
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# include <stdio.h>
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# endif
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# endif
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# else
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# include <stdio.h>
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# endif
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/* This macro protects us against machines that don't have function
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* prototypes (ie K&R style headers). If your compiler does not handle
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* function prototypes, define this macro and use the included ansi2knr.
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* I've always been able to use _NO_PROTO as the indicator, but you may
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* need to drag the empty declaration out in front of here, or change the
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* ifdef to suit your own needs.
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*/
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#ifndef PNGARG
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#ifdef OF /* zlib prototype munger */
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#define PNGARG(arglist) OF(arglist)
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#else
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#ifdef _NO_PROTO
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#define PNGARG(arglist) ()
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#else
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#define PNGARG(arglist) arglist
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#endif /* _NO_PROTO */
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#endif /* OF */
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#endif /* PNGARG */
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/* Try to determine if we are compiling on a Mac. Note that testing for
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* just __MWERKS__ is not good enough, because the Codewarrior is now used
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* on non-Mac platforms.
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*/
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#ifndef MACOS
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#if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
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defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
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#define MACOS
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#endif
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#endif
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/* enough people need this for various reasons to include it here */
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#if !defined(MACOS) && !defined(RISCOS)
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#include <sys/types.h>
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#endif
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/* This is an attempt to force a single setjmp behaviour on Linux. If
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* the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
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*/
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#ifdef __linux__
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#ifdef _BSD_SOURCE
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#define _PNG_SAVE_BSD_SOURCE
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#undef _BSD_SOURCE
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#endif
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#ifdef _SETJMP_H
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__png.h__ already includes setjmp.h
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__dont__ include it again
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#endif
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#endif /* __linux__ */
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/* include setjmp.h for error handling */
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#include <setjmp.h>
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#ifdef __linux__
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#ifdef _PNG_SAVE_BSD_SOURCE
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#define _BSD_SOURCE
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#undef _PNG_SAVE_BSD_SOURCE
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#endif
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#endif /* __linux__ */
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#ifdef BSD
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#include <strings.h>
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#else
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#include <string.h>
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#endif
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/* Other defines for things like memory and the like can go here. */
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#ifdef PNG_INTERNAL
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#include <stdlib.h>
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/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
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* aren't usually used outside the library (as far as I know), so it is
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* debatable if they should be exported at all. In the future, when it is
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* possible to have run-time registry of chunk-handling functions, some of
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* these will be made available again.
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#define PNG_EXTERN extern
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*/
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#define PNG_EXTERN
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/* Other defines specific to compilers can go here. Try to keep
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* them inside an appropriate ifdef/endif pair for portability.
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*/
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#if defined(MACOS)
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/* We need to check that <math.h> hasn't already been included earlier
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* as it seems it doesn't agree with <fp.h>, yet we should really use
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* <fp.h> if possible.
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*/
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#if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
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#include <fp.h>
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#endif
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#else
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#include <math.h>
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#endif
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/* Codewarrior on NT has linking problems without this. */
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#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
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#define PNG_ALWAYS_EXTERN
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#endif
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/* For some reason, Borland C++ defines memcmp, etc. in mem.h, not
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* stdlib.h like it should (I think). Or perhaps this is a C++
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* "feature"?
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*/
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#ifdef __TURBOC__
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#include <mem.h>
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#include "alloc.h"
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#endif
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#ifdef _MSC_VER
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#include <malloc.h>
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#endif
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/* This controls how fine the dithering gets. As this allocates
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* a largish chunk of memory (32K), those who are not as concerned
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* with dithering quality can decrease some or all of these.
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*/
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#ifndef PNG_DITHER_RED_BITS
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#define PNG_DITHER_RED_BITS 5
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#endif
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#ifndef PNG_DITHER_GREEN_BITS
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#define PNG_DITHER_GREEN_BITS 5
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#endif
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#ifndef PNG_DITHER_BLUE_BITS
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#define PNG_DITHER_BLUE_BITS 5
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#endif
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/* This controls how fine the gamma correction becomes when you
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* are only interested in 8 bits anyway. Increasing this value
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* results in more memory being used, and more pow() functions
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* being called to fill in the gamma tables. Don't set this value
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* less then 8, and even that may not work (I haven't tested it).
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*/
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#ifndef PNG_MAX_GAMMA_8
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#define PNG_MAX_GAMMA_8 11
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#endif
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/* This controls how much a difference in gamma we can tolerate before
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* we actually start doing gamma conversion.
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*/
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#ifndef PNG_GAMMA_THRESHOLD
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#define PNG_GAMMA_THRESHOLD 0.05
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#endif
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#endif /* PNG_INTERNAL */
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/* The following uses const char * instead of char * for error
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* and warning message functions, so some compilers won't complain.
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* If you do not want to use const, define PNG_NO_CONST here.
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*/
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#ifndef PNG_NO_CONST
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# define PNG_CONST const
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#else
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# define PNG_CONST
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#endif
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/* The following defines give you the ability to remove code from the
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* library that you will not be using. I wish I could figure out how to
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* automate this, but I can't do that without making it seriously hard
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* on the users. So if you are not using an ability, change the #define
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* to and #undef, and that part of the library will not be compiled. If
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* your linker can't find a function, you may want to make sure the
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* ability is defined here. Some of these depend upon some others being
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* defined. I haven't figured out all the interactions here, so you may
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* have to experiment awhile to get everything to compile. If you are
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* creating or using a shared library, you probably shouldn't touch this,
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* as it will affect the size of the structures, and this will cause bad
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* things to happen if the library and/or application ever change.
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*/
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/* Any transformations you will not be using can be undef'ed here */
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/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
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to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
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on the compile line, then pick and choose which ones to define without
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having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
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if you only want to have a png-compliant reader/writer but don't need
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any of the extra transformations. This saves about 80 kbytes in a
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typical installation of the library. (PNG_NO_* form added in version
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1.0.1c, for consistency)
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*/
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#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
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!defined(PNG_NO_READ_TRANSFORMS)
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#define PNG_READ_TRANSFORMS_SUPPORTED
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#endif
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#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
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!defined(PNG_NO_WRITE_TRANSFORMS)
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#define PNG_WRITE_TRANSFORMS_SUPPORTED
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#endif
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#ifdef PNG_READ_TRANSFORMS_SUPPORTED
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#ifndef PNG_NO_READ_EXPAND
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#define PNG_READ_EXPAND_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_SHIFT
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#define PNG_READ_SHIFT_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_PACK
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#define PNG_READ_PACK_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_BGR
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#define PNG_READ_BGR_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_SWAP
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#define PNG_READ_SWAP_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_PACKSWAP
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#define PNG_READ_PACKSWAP_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_INVERT
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#define PNG_READ_INVERT_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_DITHER
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#define PNG_READ_DITHER_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_BACKGROUND
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#define PNG_READ_BACKGROUND_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_16_TO_8
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#define PNG_READ_16_TO_8_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_FILLER
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#define PNG_READ_FILLER_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_GAMMA
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#define PNG_READ_GAMMA_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_GRAY_TO_RGB
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#define PNG_READ_GRAY_TO_RGB_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_SWAP_ALPHA
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#define PNG_READ_SWAP_ALPHA_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_INVERT_ALPHA
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#define PNG_READ_INVERT_ALPHA_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_STRIP_ALPHA
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#define PNG_READ_STRIP_ALPHA_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_USER_TRANSFORM
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#define PNG_READ_USER_TRANSFORM_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_RGB_TO_GRAY
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#define PNG_READ_RGB_TO_GRAY_SUPPORTED
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#endif
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#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
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#if !defined(PNG_NO_PROGRESSIVE_READ) && \
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!defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
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#define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
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#endif /* about interlacing capability! You'll */
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/* still have interlacing unless you change the following line: */
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#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
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#ifndef PNG_NO_READ_COMPOSITED_NODIV
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#define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel and SGI */
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#endif
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#ifndef PNG_NO_READ_EMPTY_PLTE
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#define PNG_READ_EMPTY_PLTE_SUPPORTED /* useful for MNG applications */
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#endif
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#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
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#ifndef PNG_NO_WRITE_SHIFT
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#define PNG_WRITE_SHIFT_SUPPORTED
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#endif
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#ifndef PNG_NO_WRITE_PACK
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#define PNG_WRITE_PACK_SUPPORTED
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#endif
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#ifndef PNG_NO_WRITE_BGR
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#define PNG_WRITE_BGR_SUPPORTED
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#endif
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#ifndef PNG_NO_WRITE_SWAP
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#define PNG_WRITE_SWAP_SUPPORTED
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#endif
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#ifndef PNG_NO_WRITE_PACKSWAP
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#define PNG_WRITE_PACKSWAP_SUPPORTED
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#endif
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#ifndef PNG_NO_WRITE_INVERT
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#define PNG_WRITE_INVERT_SUPPORTED
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#endif
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#ifndef PNG_NO_WRITE_FILLER
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#define PNG_WRITE_FILLER_SUPPORTED /* This is the same as WRITE_STRIP_ALPHA */
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#endif
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#ifndef PNG_NO_WRITE_SWAP_ALPHA
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#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
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#endif
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#ifndef PNG_NO_WRITE_INVERT_ALPHA
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#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
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#endif
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#ifndef PNG_NO_WRITE_USER_TRANSFORM
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#define PNG_WRITE_USER_TRANSFORM_SUPPORTED
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#endif
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#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
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#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
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encoders, but can cause trouble
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if left undefined */
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#ifndef PNG_NO_WRITE_WEIGHTED_FILTER
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#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
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#endif
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#ifndef PNG_NO_WRITE_FLUSH
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#define PNG_WRITE_FLUSH_SUPPORTED
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#endif
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#ifndef PNG_NO_WRITE_EMPTY_PLTE
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#define PNG_WRITE_EMPTY_PLTE_SUPPORTED /* useful for MNG applications */
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#endif
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#ifndef PNG_NO_STDIO
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#define PNG_TIME_RFC1123_SUPPORTED
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#endif
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/* This adds extra functions in pngget.c for accessing data from the
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* info pointer (added in version 0.99)
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* png_get_image_width()
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* png_get_image_height()
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* png_get_bit_depth()
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* png_get_color_type()
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* png_get_compression_type()
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* png_get_filter_type()
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* png_get_interlace_type()
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* png_get_pixel_aspect_ratio()
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* png_get_pixels_per_meter()
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* png_get_x_offset_pixels()
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* png_get_y_offset_pixels()
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* png_get_x_offset_microns()
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* png_get_y_offset_microns()
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*/
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#ifndef PNG_NO_EASY_ACCESS
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#define PNG_EASY_ACCESS_SUPPORTED
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#endif
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#ifndef PNG_NO_ASSEMBLER_CODE
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#define PNG_ASSEMBLER_CODE_SUPPORTED
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#endif
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/* These are currently experimental features, define them if you want */
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/* very little testing */
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/*
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#define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
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#define PNG_USER_MEM_SUPPORTED
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*/
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/* This is only for PowerPC big-endian and 680x0 systems */
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/* some testing */
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/*
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#define PNG_READ_BIG_ENDIAN_SUPPORTED
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*/
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/* These functions are turned off by default, as they will be phased out. */
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/*
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#define PNG_USELESS_TESTS_SUPPORTED
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#define PNG_CORRECT_PALETTE_SUPPORTED
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*/
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/* Any chunks you are not interested in, you can undef here. The
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* ones that allocate memory may be expecially important (hIST,
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* tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
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* a bit smaller.
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*/
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#if !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
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!defined(PNG_NO_READ_ANCILLARY_CHUNKS)
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#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
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#endif
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#if !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
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!defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
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#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
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#endif
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#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
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#ifndef PNG_NO_READ_bKGD
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#define PNG_READ_bKGD_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_cHRM
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#define PNG_READ_cHRM_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_gAMA
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#define PNG_READ_gAMA_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_hIST
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#define PNG_READ_hIST_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_oFFs
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#define PNG_READ_oFFs_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_pCAL
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#define PNG_READ_pCAL_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_pHYs
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#define PNG_READ_pHYs_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_sBIT
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#define PNG_READ_sBIT_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_sRGB
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#define PNG_READ_sRGB_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_tEXt
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#define PNG_READ_tEXt_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_tIME
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#define PNG_READ_tIME_SUPPORTED
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#endif
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#ifndef PNG_NO_READ_tRNS
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#define PNG_READ_tRNS_SUPPORTED
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|
#endif
|
|
#ifndef PNG_NO_READ_zTXt
|
|
#define PNG_READ_zTXt_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_OPT_PLTE
|
|
#define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the optional */
|
|
#endif /* PLTE chunk in RGB and RGBA images */
|
|
#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
|
|
|
|
#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
|
|
#ifndef PNG_NO_WRITE_bKGD
|
|
#define PNG_WRITE_bKGD_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_cHRM
|
|
#define PNG_WRITE_cHRM_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_gAMA
|
|
#define PNG_WRITE_gAMA_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_hIST
|
|
#define PNG_WRITE_hIST_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_oFFs
|
|
#define PNG_WRITE_oFFs_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_pCAL
|
|
#define PNG_WRITE_pCAL_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_pHYs
|
|
#define PNG_WRITE_pHYs_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_sBIT
|
|
#define PNG_WRITE_sBIT_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_sRGB
|
|
#define PNG_WRITE_sRGB_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_tEXt
|
|
#define PNG_WRITE_tEXt_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_tIME
|
|
#define PNG_WRITE_tIME_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_tRNS
|
|
#define PNG_WRITE_tRNS_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_zTXt
|
|
#define PNG_WRITE_zTXt_SUPPORTED
|
|
#endif
|
|
#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
|
|
|
|
/* need the time information for reading tIME chunks */
|
|
#if defined(PNG_READ_tIME_SUPPORTED) || defined(PNG_WRITE_tIME_SUPPORTED)
|
|
#include <time.h>
|
|
#endif
|
|
|
|
/* Some typedefs to get us started. These should be safe on most of the
|
|
* common platforms. The typedefs should be at least as large as the
|
|
* numbers suggest (a png_uint_32 must be at least 32 bits long), but they
|
|
* don't have to be exactly that size. Some compilers dislike passing
|
|
* unsigned shorts as function parameters, so you may be better off using
|
|
* unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
|
|
* want to have unsigned int for png_uint_32 instead of unsigned long.
|
|
*/
|
|
|
|
typedef unsigned long png_uint_32;
|
|
typedef long png_int_32;
|
|
typedef unsigned short png_uint_16;
|
|
typedef short png_int_16;
|
|
typedef unsigned char png_byte;
|
|
|
|
/* This is usually size_t. It is typedef'ed just in case you need it to
|
|
change (I'm not sure if you will or not, so I thought I'd be safe) */
|
|
typedef size_t png_size_t;
|
|
|
|
/* The following is needed for medium model support. It cannot be in the
|
|
* PNG_INTERNAL section. Needs modification for other compilers besides
|
|
* MSC. Model independent support declares all arrays and pointers to be
|
|
* large using the far keyword. The zlib version used must also support
|
|
* model independent data. As of version zlib 1.0.4, the necessary changes
|
|
* have been made in zlib. The USE_FAR_KEYWORD define triggers other
|
|
* changes that are needed. (Tim Wegner)
|
|
*/
|
|
|
|
/* Separate compiler dependencies (problem here is that zlib.h always
|
|
defines FAR. (SJT) */
|
|
#ifdef __BORLANDC__
|
|
#if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
|
|
#define LDATA 1
|
|
#else
|
|
#define LDATA 0
|
|
#endif
|
|
|
|
#if !defined(__WIN32__) && !defined(__FLAT__)
|
|
#define PNG_MAX_MALLOC_64K
|
|
#if (LDATA != 1)
|
|
#ifndef FAR
|
|
#define FAR __far
|
|
#endif
|
|
#define USE_FAR_KEYWORD
|
|
#endif /* LDATA != 1 */
|
|
|
|
/* Possibly useful for moving data out of default segment.
|
|
* Uncomment it if you want. Could also define FARDATA as
|
|
* const if your compiler supports it. (SJT)
|
|
# define FARDATA FAR
|
|
*/
|
|
#endif /* __WIN32__, __FLAT__ */
|
|
|
|
#endif /* __BORLANDC__ */
|
|
|
|
|
|
/* Suggest testing for specific compiler first before testing for
|
|
* FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
|
|
* making reliance oncertain keywords suspect. (SJT)
|
|
*/
|
|
|
|
/* MSC Medium model */
|
|
#if defined(FAR)
|
|
# if defined(M_I86MM)
|
|
# define USE_FAR_KEYWORD
|
|
# define FARDATA FAR
|
|
# include <dos.h>
|
|
# endif
|
|
#endif
|
|
|
|
/* SJT: default case */
|
|
#ifndef FAR
|
|
# define FAR
|
|
#endif
|
|
|
|
/* At this point FAR is always defined */
|
|
#ifndef FARDATA
|
|
#define FARDATA
|
|
#endif
|
|
|
|
/* Add typedefs for pointers */
|
|
typedef void FAR * png_voidp;
|
|
typedef png_byte FAR * png_bytep;
|
|
typedef png_uint_32 FAR * png_uint_32p;
|
|
typedef png_int_32 FAR * png_int_32p;
|
|
typedef png_uint_16 FAR * png_uint_16p;
|
|
typedef png_int_16 FAR * png_int_16p;
|
|
typedef PNG_CONST char FAR * png_const_charp;
|
|
typedef char FAR * png_charp;
|
|
typedef double FAR * png_doublep;
|
|
|
|
/* Pointers to pointers; i.e. arrays */
|
|
typedef png_byte FAR * FAR * png_bytepp;
|
|
typedef png_uint_32 FAR * FAR * png_uint_32pp;
|
|
typedef png_int_32 FAR * FAR * png_int_32pp;
|
|
typedef png_uint_16 FAR * FAR * png_uint_16pp;
|
|
typedef png_int_16 FAR * FAR * png_int_16pp;
|
|
typedef PNG_CONST char FAR * FAR * png_const_charpp;
|
|
typedef char FAR * FAR * png_charpp;
|
|
typedef double FAR * FAR * png_doublepp;
|
|
|
|
/* Pointers to pointers to pointers; i.e. pointer to array */
|
|
typedef char FAR * FAR * FAR * png_charppp;
|
|
|
|
/* libpng typedefs for types in zlib. If zlib changes
|
|
* or another compression library is used, then change these.
|
|
* Eliminates need to change all the source files.
|
|
*/
|
|
typedef charf * png_zcharp;
|
|
typedef charf * FAR * png_zcharpp;
|
|
typedef z_stream FAR * png_zstreamp;
|
|
|
|
|
|
#ifndef PNG_EXPORT
|
|
/* allow for compilation as dll under MS Windows */
|
|
# ifdef __WIN32DLL__
|
|
# define PNG_EXPORT(type,symbol) __declspec(dllexport) type symbol
|
|
# endif
|
|
|
|
/* this variant is used in Mozilla; may correspond to MSVC++ 6.0 changes */
|
|
# ifdef ALT_WIN32_DLL
|
|
# define PNG_EXPORT(type,symbol) type __attribute__((dllexport)) symbol
|
|
# endif
|
|
|
|
/* allow for compilation as dll with Borland C++ 5.0 */
|
|
# if defined(__BORLANDC__) && defined(_Windows) && defined(__DLL__)
|
|
# define PNG_EXPORT(type,symbol) type _export symbol
|
|
# endif
|
|
|
|
/* allow for compilation as shared lib under BeOS */
|
|
# ifdef __BEOSDLL__
|
|
# define PNG_EXPORT(type,symbol) __declspec(export) type symbol
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef PNG_EXPORT
|
|
# define PNG_EXPORT(type,symbol) type symbol
|
|
#endif
|
|
|
|
|
|
/* User may want to use these so not in PNG_INTERNAL. Any library functions
|
|
* that are passed far data must be model independent.
|
|
*/
|
|
|
|
#if defined(USE_FAR_KEYWORD) /* memory model independent fns */
|
|
/* use this to make far-to-near assignments */
|
|
# define CHECK 1
|
|
# define NOCHECK 0
|
|
# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
|
|
# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
|
|
# define png_strcpy _fstrcpy
|
|
# define png_strlen _fstrlen
|
|
# define png_memcmp _fmemcmp /* SJT: added */
|
|
# define png_memcpy _fmemcpy
|
|
# define png_memset _fmemset
|
|
#else /* use the usual functions */
|
|
# define CVT_PTR(ptr) (ptr)
|
|
# define CVT_PTR_NOCHECK(ptr) (ptr)
|
|
# define png_strcpy strcpy
|
|
# define png_strlen strlen
|
|
# define png_memcmp memcmp /* SJT: added */
|
|
# define png_memcpy memcpy
|
|
# define png_memset memset
|
|
#endif
|
|
/* End of memory model independent support */
|
|
|
|
/* Just a double check that someone hasn't tried to define something
|
|
* contradictory.
|
|
*/
|
|
#if (PNG_ZBUF_SIZE > 65536) && defined(PNG_MAX_MALLOC_64K)
|
|
#undef PNG_ZBUF_SIZE
|
|
#define PNG_ZBUF_SIZE 65536
|
|
#endif
|
|
|
|
#endif /* PNGCONF_H */
|
|
|