959 lines
28 KiB
C
959 lines
28 KiB
C
|
|
/* pngconf.h - machine configurable file for libpng
|
|
*
|
|
* libpng 1.0.6a - April 2, 2000
|
|
* For conditions of distribution and use, see copyright notice in png.h
|
|
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
|
* Copyright (c) 1996, 1997 Andreas Dilger
|
|
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
|
|
*/
|
|
|
|
/* Any machine specific code is near the front of this file, so if you
|
|
* are configuring libpng for a machine, you may want to read the section
|
|
* starting here down to where it starts to typedef png_color, png_text,
|
|
* and png_info.
|
|
*/
|
|
|
|
#ifndef PNGCONF_H
|
|
#define PNGCONF_H
|
|
|
|
/* This is the size of the compression buffer, and thus the size of
|
|
* an IDAT chunk. Make this whatever size you feel is best for your
|
|
* machine. One of these will be allocated per png_struct. When this
|
|
* is full, it writes the data to the disk, and does some other
|
|
* calculations. Making this an extremely small size will slow
|
|
* the library down, but you may want to experiment to determine
|
|
* where it becomes significant, if you are concerned with memory
|
|
* usage. Note that zlib allocates at least 32Kb also. For readers,
|
|
* this describes the size of the buffer available to read the data in.
|
|
* Unless this gets smaller than the size of a row (compressed),
|
|
* it should not make much difference how big this is.
|
|
*/
|
|
|
|
#ifndef PNG_ZBUF_SIZE
|
|
#define PNG_ZBUF_SIZE 8192
|
|
#endif
|
|
|
|
/* If you are running on a machine where you cannot allocate more
|
|
* than 64K of memory at once, uncomment this. While libpng will not
|
|
* normally need that much memory in a chunk (unless you load up a very
|
|
* large file), zlib needs to know how big of a chunk it can use, and
|
|
* libpng thus makes sure to check any memory allocation to verify it
|
|
* will fit into memory.
|
|
#define PNG_MAX_MALLOC_64K
|
|
*/
|
|
#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
|
|
#define PNG_MAX_MALLOC_64K
|
|
#endif
|
|
|
|
/* This protects us against compilers that run on a windowing system
|
|
* and thus don't have or would rather us not use the stdio types:
|
|
* stdin, stdout, and stderr. The only one currently used is stderr
|
|
* in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
|
|
* prevent these from being compiled and used. #defining PNG_NO_STDIO
|
|
* will also prevent these, plus will prevent the entire set of stdio
|
|
* macros and functions (FILE *, printf, etc.) from being compiled and used,
|
|
* unless (PNG_DEBUG > 0) has been #defined.
|
|
*
|
|
* #define PNG_NO_CONSOLE_IO
|
|
* #define PNG_NO_STDIO
|
|
*/
|
|
|
|
# ifdef PNG_NO_STDIO
|
|
# ifndef PNG_NO_CONSOLE_IO
|
|
# define PNG_NO_CONSOLE_IO
|
|
# endif
|
|
# ifdef PNG_DEBUG
|
|
# if (PNG_DEBUG > 0)
|
|
# include <stdio.h>
|
|
# endif
|
|
# endif
|
|
# else
|
|
# include <stdio.h>
|
|
# endif
|
|
|
|
/* This macro protects us against machines that don't have function
|
|
* prototypes (ie K&R style headers). If your compiler does not handle
|
|
* function prototypes, define this macro and use the included ansi2knr.
|
|
* I've always been able to use _NO_PROTO as the indicator, but you may
|
|
* need to drag the empty declaration out in front of here, or change the
|
|
* ifdef to suit your own needs.
|
|
*/
|
|
#ifndef PNGARG
|
|
|
|
#ifdef OF /* zlib prototype munger */
|
|
#define PNGARG(arglist) OF(arglist)
|
|
#else
|
|
|
|
#ifdef _NO_PROTO
|
|
#define PNGARG(arglist) ()
|
|
#else
|
|
#define PNGARG(arglist) arglist
|
|
#endif /* _NO_PROTO */
|
|
|
|
#endif /* OF */
|
|
|
|
#endif /* PNGARG */
|
|
|
|
/* Try to determine if we are compiling on a Mac. Note that testing for
|
|
* just __MWERKS__ is not good enough, because the Codewarrior is now used
|
|
* on non-Mac platforms.
|
|
*/
|
|
#ifndef MACOS
|
|
#if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
|
|
defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
|
|
#define MACOS
|
|
#endif
|
|
#endif
|
|
|
|
/* enough people need this for various reasons to include it here */
|
|
#if !defined(MACOS) && !defined(RISCOS)
|
|
#include <sys/types.h>
|
|
#endif
|
|
|
|
#ifndef PNG_SETJMP_NOT_SUPPORTED
|
|
# define PNG_SETJMP_SUPPORTED
|
|
#endif
|
|
|
|
#ifdef PNG_SETJMP_SUPPORTED
|
|
/* This is an attempt to force a single setjmp behaviour on Linux. If
|
|
* the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
|
|
*/
|
|
# ifdef __linux__
|
|
# ifdef _BSD_SOURCE
|
|
# define _PNG_SAVE_BSD_SOURCE
|
|
# undef _BSD_SOURCE
|
|
# endif
|
|
# ifdef _SETJMP_H
|
|
__png.h__ already includes setjmp.h
|
|
__dont__ include it again
|
|
# endif
|
|
#endif /* __linux__ */
|
|
|
|
/* include setjmp.h for error handling */
|
|
#include <setjmp.h>
|
|
|
|
# ifdef __linux__
|
|
# ifdef _PNG_SAVE_BSD_SOURCE
|
|
# define _BSD_SOURCE
|
|
# undef _PNG_SAVE_BSD_SOURCE
|
|
# endif
|
|
# endif /* __linux__ */
|
|
#endif /* PNG_SETJMP_SUPPORTED */
|
|
|
|
#ifdef BSD
|
|
#include <strings.h>
|
|
#else
|
|
#include <string.h>
|
|
#endif
|
|
|
|
/* Other defines for things like memory and the like can go here. */
|
|
#ifdef PNG_INTERNAL
|
|
#include <stdlib.h>
|
|
|
|
/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
|
|
* aren't usually used outside the library (as far as I know), so it is
|
|
* debatable if they should be exported at all. In the future, when it is
|
|
* possible to have run-time registry of chunk-handling functions, some of
|
|
* these will be made available again.
|
|
#define PNG_EXTERN extern
|
|
*/
|
|
#define PNG_EXTERN
|
|
|
|
/* Other defines specific to compilers can go here. Try to keep
|
|
* them inside an appropriate ifdef/endif pair for portability.
|
|
*/
|
|
|
|
#if !defined(PNG_NO_FLOATING_POINT_SUPPORTED)
|
|
#if defined(MACOS)
|
|
/* We need to check that <math.h> hasn't already been included earlier
|
|
* as it seems it doesn't agree with <fp.h>, yet we should really use
|
|
* <fp.h> if possible.
|
|
*/
|
|
#if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
|
|
#include <fp.h>
|
|
#endif
|
|
#else
|
|
#include <math.h>
|
|
#endif
|
|
#endif
|
|
|
|
/* Codewarrior on NT has linking problems without this. */
|
|
#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
|
|
#define PNG_ALWAYS_EXTERN
|
|
#endif
|
|
|
|
/* For some reason, Borland C++ defines memcmp, etc. in mem.h, not
|
|
* stdlib.h like it should (I think). Or perhaps this is a C++
|
|
* "feature"?
|
|
*/
|
|
#ifdef __TURBOC__
|
|
#include <mem.h>
|
|
#include "alloc.h"
|
|
#endif
|
|
|
|
#ifdef _MSC_VER
|
|
#include <malloc.h>
|
|
#endif
|
|
|
|
/* This controls how fine the dithering gets. As this allocates
|
|
* a largish chunk of memory (32K), those who are not as concerned
|
|
* with dithering quality can decrease some or all of these.
|
|
*/
|
|
#ifndef PNG_DITHER_RED_BITS
|
|
#define PNG_DITHER_RED_BITS 5
|
|
#endif
|
|
#ifndef PNG_DITHER_GREEN_BITS
|
|
#define PNG_DITHER_GREEN_BITS 5
|
|
#endif
|
|
#ifndef PNG_DITHER_BLUE_BITS
|
|
#define PNG_DITHER_BLUE_BITS 5
|
|
#endif
|
|
|
|
/* This controls how fine the gamma correction becomes when you
|
|
* are only interested in 8 bits anyway. Increasing this value
|
|
* results in more memory being used, and more pow() functions
|
|
* being called to fill in the gamma tables. Don't set this value
|
|
* less then 8, and even that may not work (I haven't tested it).
|
|
*/
|
|
|
|
#ifndef PNG_MAX_GAMMA_8
|
|
#define PNG_MAX_GAMMA_8 11
|
|
#endif
|
|
|
|
/* This controls how much a difference in gamma we can tolerate before
|
|
* we actually start doing gamma conversion.
|
|
*/
|
|
#ifndef PNG_GAMMA_THRESHOLD
|
|
#define PNG_GAMMA_THRESHOLD 0.05
|
|
#endif
|
|
|
|
#endif /* PNG_INTERNAL */
|
|
|
|
/* The following uses const char * instead of char * for error
|
|
* and warning message functions, so some compilers won't complain.
|
|
* If you do not want to use const, define PNG_NO_CONST here.
|
|
*/
|
|
|
|
#ifndef PNG_NO_CONST
|
|
# define PNG_CONST const
|
|
#else
|
|
# define PNG_CONST
|
|
#endif
|
|
|
|
/* The following defines give you the ability to remove code from the
|
|
* library that you will not be using. I wish I could figure out how to
|
|
* automate this, but I can't do that without making it seriously hard
|
|
* on the users. So if you are not using an ability, change the #define
|
|
* to and #undef, and that part of the library will not be compiled. If
|
|
* your linker can't find a function, you may want to make sure the
|
|
* ability is defined here. Some of these depend upon some others being
|
|
* defined. I haven't figured out all the interactions here, so you may
|
|
* have to experiment awhile to get everything to compile. If you are
|
|
* creating or using a shared library, you probably shouldn't touch this,
|
|
* as it will affect the size of the structures, and this will cause bad
|
|
* things to happen if the library and/or application ever change.
|
|
*/
|
|
|
|
/* Any transformations you will not be using can be undef'ed here */
|
|
|
|
/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
|
|
to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
|
|
on the compile line, then pick and choose which ones to define without
|
|
having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
|
|
if you only want to have a png-compliant reader/writer but don't need
|
|
any of the extra transformations. This saves about 80 kbytes in a
|
|
typical installation of the library. (PNG_NO_* form added in version
|
|
1.0.1c, for consistency)
|
|
*/
|
|
|
|
|
|
|
|
#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
|
|
!defined(PNG_NO_READ_TRANSFORMS)
|
|
#define PNG_READ_TRANSFORMS_SUPPORTED
|
|
#endif
|
|
#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
|
|
!defined(PNG_NO_WRITE_TRANSFORMS)
|
|
#define PNG_WRITE_TRANSFORMS_SUPPORTED
|
|
#endif
|
|
|
|
#ifdef PNG_READ_TRANSFORMS_SUPPORTED
|
|
#ifndef PNG_NO_READ_EXPAND
|
|
#define PNG_READ_EXPAND_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_SHIFT
|
|
#define PNG_READ_SHIFT_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_PACK
|
|
#define PNG_READ_PACK_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_BGR
|
|
#define PNG_READ_BGR_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_SWAP
|
|
#define PNG_READ_SWAP_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_PACKSWAP
|
|
#define PNG_READ_PACKSWAP_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_INVERT
|
|
#define PNG_READ_INVERT_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_DITHER
|
|
#define PNG_READ_DITHER_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_BACKGROUND
|
|
#define PNG_READ_BACKGROUND_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_16_TO_8
|
|
#define PNG_READ_16_TO_8_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_FILLER
|
|
#define PNG_READ_FILLER_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_GAMMA
|
|
#define PNG_READ_GAMMA_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_GRAY_TO_RGB
|
|
#define PNG_READ_GRAY_TO_RGB_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_SWAP_ALPHA
|
|
#define PNG_READ_SWAP_ALPHA_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_INVERT_ALPHA
|
|
#define PNG_READ_INVERT_ALPHA_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_STRIP_ALPHA
|
|
#define PNG_READ_STRIP_ALPHA_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_USER_TRANSFORM
|
|
#define PNG_READ_USER_TRANSFORM_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_RGB_TO_GRAY
|
|
#define PNG_READ_RGB_TO_GRAY_SUPPORTED
|
|
#endif
|
|
#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
|
|
|
|
#if !defined(PNG_NO_PROGRESSIVE_READ) && \
|
|
!defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
|
|
#define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
|
|
#endif /* about interlacing capability! You'll */
|
|
/* still have interlacing unless you change the following line: */
|
|
#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
|
|
|
|
#ifndef PNG_NO_READ_COMPOSITED_NODIV
|
|
#define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel and SGI */
|
|
#endif
|
|
|
|
#ifndef PNG_NO_READ_EMPTY_PLTE
|
|
#define PNG_READ_EMPTY_PLTE_SUPPORTED /* useful for MNG applications */
|
|
#endif
|
|
|
|
#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
|
|
#ifndef PNG_NO_WRITE_SHIFT
|
|
#define PNG_WRITE_SHIFT_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_PACK
|
|
#define PNG_WRITE_PACK_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_BGR
|
|
#define PNG_WRITE_BGR_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_SWAP
|
|
#define PNG_WRITE_SWAP_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_PACKSWAP
|
|
#define PNG_WRITE_PACKSWAP_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_INVERT
|
|
#define PNG_WRITE_INVERT_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_FILLER
|
|
#define PNG_WRITE_FILLER_SUPPORTED /* This is the same as WRITE_STRIP_ALPHA */
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_SWAP_ALPHA
|
|
#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_INVERT_ALPHA
|
|
#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_USER_TRANSFORM
|
|
#define PNG_WRITE_USER_TRANSFORM_SUPPORTED
|
|
#endif
|
|
#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
|
|
|
|
#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
|
|
encoders, but can cause trouble
|
|
if left undefined */
|
|
|
|
#ifndef PNG_NO_WRITE_WEIGHTED_FILTER
|
|
#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
|
|
#endif
|
|
|
|
#ifndef PNG_NO_WRITE_FLUSH
|
|
#define PNG_WRITE_FLUSH_SUPPORTED
|
|
#endif
|
|
|
|
#ifndef PNG_NO_WRITE_EMPTY_PLTE
|
|
#define PNG_WRITE_EMPTY_PLTE_SUPPORTED /* useful for MNG applications */
|
|
#endif
|
|
|
|
#ifndef PNG_NO_STDIO
|
|
#define PNG_TIME_RFC1123_SUPPORTED
|
|
#endif
|
|
|
|
/* This adds extra functions in pngget.c for accessing data from the
|
|
* info pointer (added in version 0.99)
|
|
* png_get_image_width()
|
|
* png_get_image_height()
|
|
* png_get_bit_depth()
|
|
* png_get_color_type()
|
|
* png_get_compression_type()
|
|
* png_get_filter_type()
|
|
* png_get_interlace_type()
|
|
* png_get_pixel_aspect_ratio()
|
|
* png_get_pixels_per_meter()
|
|
* png_get_x_offset_pixels()
|
|
* png_get_y_offset_pixels()
|
|
* png_get_x_offset_microns()
|
|
* png_get_y_offset_microns()
|
|
*/
|
|
#ifndef PNG_NO_EASY_ACCESS
|
|
#define PNG_EASY_ACCESS_SUPPORTED
|
|
#endif
|
|
|
|
#if defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD) && \
|
|
!defined(PNG_NO_ASSEMBLER_CODE)
|
|
#define PNG_ASSEMBLER_CODE_SUPPORTED
|
|
#endif
|
|
|
|
#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
|
|
#define PNG_FLOATING_POINT_SUPPORTED
|
|
#endif
|
|
|
|
#ifndef PNG_NO_FIXED_POINT_SUPPORTED
|
|
#define PNG_FIXED_POINT_SUPPORTED
|
|
#endif
|
|
|
|
/* Do not use global arrays (helps with building DLL's)
|
|
* They are no longer used in libpng itself, since version 1.0.5c,
|
|
* but might be required for some pre-1.0.5c applications.
|
|
*/
|
|
#ifdef PNG_NO_GLOBAL_ARRAYS
|
|
# define PNG_USE_LOCAL_ARRAYS
|
|
#else
|
|
# if defined(__GNUC__) && defined(WIN32)
|
|
# define PNG_NO_GLOBAL_ARRAYS
|
|
# define PNG_USE_LOCAL_ARRAYS
|
|
# else
|
|
# define PNG_USE_GLOBAL_ARRAYS
|
|
# endif
|
|
#endif
|
|
|
|
/* These are currently experimental features, define them if you want */
|
|
|
|
/* very little testing */
|
|
/*
|
|
#define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
|
|
#define PNG_USER_MEM_SUPPORTED
|
|
*/
|
|
|
|
/* This is only for PowerPC big-endian and 680x0 systems */
|
|
/* some testing */
|
|
/*
|
|
#define PNG_READ_BIG_ENDIAN_SUPPORTED
|
|
*/
|
|
|
|
/* These functions are turned off by default, as they will be phased out. */
|
|
/*
|
|
#define PNG_USELESS_TESTS_SUPPORTED
|
|
#define PNG_CORRECT_PALETTE_SUPPORTED
|
|
*/
|
|
|
|
/* Any chunks you are not interested in, you can undef here. The
|
|
* ones that allocate memory may be expecially important (hIST,
|
|
* tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
|
|
* a bit smaller.
|
|
*/
|
|
|
|
#if !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
|
|
!defined(PNG_NO_READ_ANCILLARY_CHUNKS)
|
|
#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
|
|
#endif
|
|
#if !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
|
|
!defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
|
|
#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
|
|
#endif
|
|
|
|
#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
|
|
|
|
#ifdef PNG_NO_READ_TEXT
|
|
# define PNG_NO_READ_iTXt
|
|
# define PNG_NO_READ_tEXt
|
|
# define PNG_NO_READ_zTXt
|
|
#endif
|
|
#ifndef PNG_NO_READ_bKGD
|
|
# define PNG_READ_bKGD_SUPPORTED
|
|
# define PNG_bKGD_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_cHRM
|
|
# define PNG_READ_cHRM_SUPPORTED
|
|
# define PNG_cHRM_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_gAMA
|
|
# define PNG_READ_gAMA_SUPPORTED
|
|
# define PNG_gAMA_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_hIST
|
|
# define PNG_READ_hIST_SUPPORTED
|
|
# define PNG_hIST_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_iCCP
|
|
# define PNG_READ_iCCP_SUPPORTED
|
|
# define PNG_iCCP_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_iTXt
|
|
# define PNG_READ_iTXt_SUPPORTED
|
|
# define PNG_iTXt_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_oFFs
|
|
# define PNG_READ_oFFs_SUPPORTED
|
|
# define PNG_oFFs_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_pCAL
|
|
# define PNG_READ_pCAL_SUPPORTED
|
|
# define PNG_pCAL_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_sCAL
|
|
# define PNG_READ_sCAL_SUPPORTED
|
|
# define PNG_sCAL_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_pHYs
|
|
# define PNG_READ_pHYs_SUPPORTED
|
|
# define PNG_pHYs_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_sBIT
|
|
# define PNG_READ_sBIT_SUPPORTED
|
|
# define PNG_sBIT_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_sPLT
|
|
# define PNG_READ_sPLT_SUPPORTED
|
|
# define PNG_sPLT_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_sRGB
|
|
# define PNG_READ_sRGB_SUPPORTED
|
|
# define PNG_sRGB_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_tEXt
|
|
# define PNG_READ_tEXt_SUPPORTED
|
|
# define PNG_tEXt_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_tIME
|
|
# define PNG_READ_tIME_SUPPORTED
|
|
# define PNG_tIME_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_tRNS
|
|
# define PNG_READ_tRNS_SUPPORTED
|
|
# define PNG_tRNS_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_zTXt
|
|
# define PNG_READ_zTXt_SUPPORTED
|
|
# define PNG_zTXt_SUPPORTED
|
|
#endif
|
|
#ifndef PNG_NO_READ_USER_CHUNKS
|
|
# define PNG_READ_USER_CHUNKS_SUPPORTED
|
|
# define PNG_USER_CHUNKS_SUPPORTED
|
|
# ifdef PNG_NO_READ_UNKNOWN_CHUNKS
|
|
# undef PNG_NO_READ_UNKNOWN_CHUNKS
|
|
# endif
|
|
# ifdef PNG_NO_HANDLE_AS_UNKNOWN
|
|
# undef PNG_NO_HANDLE_AS_UNKNOWN
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
|
|
# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
|
|
# define PNG_UNKNOWN_CHUNKS_SUPPORTED
|
|
# ifndef PNG_NO_HANDLE_AS_UNKNOWN
|
|
# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_READ_OPT_PLTE
|
|
# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
|
|
#endif /* optional PLTE chunk in RGB and RGBA images */
|
|
#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
|
|
defined(PNG_READ_zTXt_SUPPORTED)
|
|
# define PNG_READ_TEXT_SUPPORTED
|
|
# define PNG_TEXT_SUPPORTED
|
|
#endif
|
|
#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
|
|
|
|
#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
|
|
#ifdef PNG_NO_WRITE_TEXT
|
|
# define PNG_NO_WRITE_iTXt
|
|
# define PNG_NO_WRITE_tEXt
|
|
# define PNG_NO_WRITE_zTXt
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_bKGD
|
|
# define PNG_WRITE_bKGD_SUPPORTED
|
|
# ifndef PNG_bKGD_SUPPORTED
|
|
# define PNG_bKGD_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_cHRM
|
|
# define PNG_WRITE_cHRM_SUPPORTED
|
|
# ifndef PNG_cHRM_SUPPORTED
|
|
# define PNG_cHRM_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_gAMA
|
|
# define PNG_WRITE_gAMA_SUPPORTED
|
|
# ifndef PNG_gAMA_SUPPORTED
|
|
# define PNG_gAMA_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_hIST
|
|
# define PNG_WRITE_hIST_SUPPORTED
|
|
# ifndef PNG_hIST_SUPPORTED
|
|
# define PNG_hIST_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_iCCP
|
|
# define PNG_WRITE_iCCP_SUPPORTED
|
|
# ifndef PNG_iCCP_SUPPORTED
|
|
# define PNG_iCCP_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_iTXt
|
|
# define PNG_WRITE_iTXt_SUPPORTED
|
|
# ifndef PNG_iTXt_SUPPORTED
|
|
# define PNG_iTXt_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_oFFs
|
|
# define PNG_WRITE_oFFs_SUPPORTED
|
|
# ifndef PNG_oFFs_SUPPORTED
|
|
# define PNG_oFFs_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_pCAL
|
|
# define PNG_WRITE_pCAL_SUPPORTED
|
|
# ifndef PNG_pCAL_SUPPORTED
|
|
# define PNG_pCAL_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_sCAL
|
|
# define PNG_WRITE_sCAL_SUPPORTED
|
|
# ifndef PNG_sCAL_SUPPORTED
|
|
# define PNG_sCAL_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_pHYs
|
|
# define PNG_WRITE_pHYs_SUPPORTED
|
|
# ifndef PNG_pHYs_SUPPORTED
|
|
# define PNG_pHYs_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_sBIT
|
|
# define PNG_WRITE_sBIT_SUPPORTED
|
|
# ifndef PNG_sBIT_SUPPORTED
|
|
# define PNG_sBIT_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_sPLT
|
|
# define PNG_WRITE_sPLT_SUPPORTED
|
|
# ifndef PNG_sPLT_SUPPORTED
|
|
# define PNG_sPLT_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_sRGB
|
|
# define PNG_WRITE_sRGB_SUPPORTED
|
|
# ifndef PNG_sRGB_SUPPORTED
|
|
# define PNG_sRGB_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_tEXt
|
|
# define PNG_WRITE_tEXt_SUPPORTED
|
|
# ifndef PNG_tEXt_SUPPORTED
|
|
# define PNG_tEXt_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_tIME
|
|
# define PNG_WRITE_tIME_SUPPORTED
|
|
# ifndef PNG_tIME_SUPPORTED
|
|
# define PNG_tIME_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_tRNS
|
|
# define PNG_WRITE_tRNS_SUPPORTED
|
|
# ifndef PNG_tRNS_SUPPORTED
|
|
# define PNG_tRNS_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_zTXt
|
|
# define PNG_WRITE_zTXt_SUPPORTED
|
|
# ifndef PNG_zTXt_SUPPORTED
|
|
# define PNG_zTXt_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
|
|
# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
|
|
# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
|
|
# define PNG_UNKNOWN_CHUNKS_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_HANDLE_AS_UNKNOWN
|
|
# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
|
|
# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
|
|
# endif
|
|
# endif
|
|
#endif
|
|
#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
|
|
defined(PNG_WRITE_zTXt_SUPPORTED)
|
|
# define PNG_WRITE_TEXT_SUPPORTED
|
|
# ifndef PNG_TEXT_SUPPORTED
|
|
# define PNG_TEXT_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
|
|
|
|
/* Turn this off to disable png_read_png() and
|
|
* png_write_png() and leave the row_pointers member
|
|
* out of the info structure.
|
|
*/
|
|
#ifndef PNG_NO_INFO_IMAGE
|
|
# define PNG_INFO_IMAGE_SUPPORTED
|
|
#endif
|
|
|
|
/* need the time information for reading tIME chunks */
|
|
#if defined(PNG_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
|
|
|
|
/* Typedef for floating-point numbers that are converted
|
|
to fixed-point with a multiple of 100,000, e.g., int_gamma */
|
|
typedef png_int_32 png_fixed_point;
|
|
|
|
/* 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 png_fixed_point FAR * png_fixed_point_p;
|
|
#ifdef PNG_FLOATING_POINT_SUPPORTED
|
|
typedef double FAR * png_doublep;
|
|
#endif
|
|
|
|
/* 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 png_fixed_point FAR * FAR * png_fixed_point_pp;
|
|
#ifdef PNG_FLOATING_POINT_SUPPORTED
|
|
typedef double FAR * FAR * png_doublepp;
|
|
#endif
|
|
|
|
/* 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
|
|
/* GRR 20000206: based on zconf.h and MSVC 5.0 docs */
|
|
# if defined(_MSC_VER) && defined(_DLL)
|
|
# define PNG_EXPORT(type,symbol) type __declspec(dllexport) symbol
|
|
# endif
|
|
|
|
/* allow for compilation as a DLL under MS Windows */
|
|
# ifdef __WIN32DLL__ /* Borland? */
|
|
# 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 a 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
|
|
|
|
#if defined(__MINGW32__) || defined(__CYGWIN32__)
|
|
# define PNG_ATTR_DLLIMP
|
|
#endif
|
|
|
|
#ifndef PNG_EXPORT_VAR
|
|
# if defined(_MSC_VER) && defined(_DLL) /* GRR 20000206 */
|
|
# define PNG_EXPORT_VAR(type) extern type __declspec(dllexport)
|
|
# endif
|
|
# ifdef PNG_DECL_DLLEXP
|
|
# define PNG_EXPORT_VAR(type) extern __declspec(dllexport) type
|
|
# endif
|
|
# ifdef PNG_ATTR_DLLEXP
|
|
# define PNG_EXPORT_VAR(type) extern type __attribute__((dllexport))
|
|
# endif
|
|
# ifdef PNG_DECL_DLLIMP
|
|
# define PNG_EXPORT_VAR(type) extern __declspec(dllimport) type
|
|
# endif
|
|
# ifdef PNG_ATTR_DLLIMP
|
|
# define PNG_EXPORT_VAR(type) extern type __attribute__((dllimport))
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef PNG_EXPORT_VAR
|
|
# define PNG_EXPORT_VAR(type) extern type
|
|
#endif
|
|
|
|
/* User may want to use these so not in PNG_INTERNAL. Any library functions
|
|
* that are passed far data must be model independent.
|
|
*/
|
|
|
|
#ifndef PNG_ABORT
|
|
# define PNG_ABORT() abort()
|
|
#endif
|
|
|
|
#ifdef PNG_SETJMP_SUPPORTED
|
|
# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
|
|
#else
|
|
# define png_jmpbuf(png_ptr) \
|
|
(LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
|
|
#endif
|
|
|
|
#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 little 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 */
|
|
|