зеркало из https://github.com/mozilla/pjs.git
Updated to correct version.
Note: this check in will result in bad displays of colormapped pngs with alpha or transparency. This problem will be fixed with later checkins. pnunn.
This commit is contained in:
pnunn%netscape.com
Родитель
335d678f9b
Коммит
c6afe14391
|
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@ -1,67 +1,70 @@
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|
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/* pngconf.c - machine configurable file for libpng
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|
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libpng 1.0 beta 5 - version 0.95
|
||||
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
|
||||
March 30, 1997
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||||
*/
|
||||
/* pngconf.h - machine configurable file for libpng
|
||||
*
|
||||
* libpng 1.0.2 - June 14, 1998
|
||||
* 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, 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 */
|
||||
* 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
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||||
#define PNGCONF_H
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||||
|
||||
/* 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 extreamly 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 then the size of a row (compressed),
|
||||
it should not make much difference how big this is. */
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#define PNG_ZBUF_SIZE 0x02000
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#ifndef PNG_ZBUF_SIZE
|
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#define PNG_ZBUF_SIZE 8192
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#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.
|
||||
*/
|
||||
* 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)
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||||
#define PNG_MAX_MALLOC_64K
|
||||
#endif
|
||||
|
||||
/* This protects us against compilers which 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_STDIO will
|
||||
prevent these from being compiled and used. */
|
||||
/* 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_STDIO will
|
||||
* prevent these from being compiled and used.
|
||||
* #define PNG_NO_STDIO
|
||||
*/
|
||||
|
||||
/* #define PNG_NO_STDIO */
|
||||
|
||||
/* for FILE. If you are not using standard io, you don't need this */
|
||||
#ifndef PNG_NO_STDIO
|
||||
#ifndef PNG_NO_STDIO
|
||||
#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. */
|
||||
* 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 */
|
||||
|
|
@ -78,10 +81,16 @@
|
|||
|
||||
#endif /* PNGARG */
|
||||
|
||||
/* Try to determine if we are compiling on a Mac */
|
||||
#if defined(__MWERKS__) ||defined(applec) ||defined(THINK_C) ||defined(__SC__)
|
||||
/* 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)
|
||||
|
|
@ -89,19 +98,28 @@
|
|||
#endif
|
||||
|
||||
/* 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. */
|
||||
#if defined(linux) && defined(_BSD_SOURCE)
|
||||
* 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>
|
||||
|
||||
#if defined(linux) && defined(_PNG_SAVE_BSD_SOURCE)
|
||||
#ifdef __linux__
|
||||
#ifdef _PNG_SAVE_BSD_SOURCE
|
||||
#define _BSD_SOURCE
|
||||
#undef _PNG_SAVE_BSD_SOURCE
|
||||
#endif
|
||||
#endif /* __linux__ */
|
||||
|
||||
#ifdef BSD
|
||||
#include <strings.h>
|
||||
|
|
@ -112,9 +130,6 @@
|
|||
/* Other defines for things like memory and the like can go here. */
|
||||
#ifdef PNG_INTERNAL
|
||||
#include <stdlib.h>
|
||||
/* Where do we need this???
|
||||
#include <ctype.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
|
||||
|
|
@ -126,12 +141,14 @@
|
|||
#define PNG_EXTERN
|
||||
|
||||
/* Other defines specific to compilers can go here. Try to keep
|
||||
them inside an appropriate ifdef/endif pair for portability */
|
||||
* them inside an appropriate ifdef/endif pair for portability.
|
||||
*/
|
||||
|
||||
#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. */
|
||||
* 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
|
||||
|
|
@ -139,9 +156,15 @@
|
|||
#include <math.h>
|
||||
#endif
|
||||
|
||||
/* Codewarrior on NT has linking problems without this. */
|
||||
#if defined(__MWERKS__) && defined(WIN32)
|
||||
#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"? */
|
||||
* stdlib.h like it should (I think). Or perhaps this is a C++
|
||||
* "feature"?
|
||||
*/
|
||||
#ifdef __TURBOC__
|
||||
#include <mem.h>
|
||||
#include "alloc.h"
|
||||
|
|
@ -152,140 +175,352 @@
|
|||
#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. */
|
||||
* 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). */
|
||||
* 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. */
|
||||
* 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 want to use const, define PNG_USE_CONST here. It is not
|
||||
normally defined to make configuration easier, as it is not a
|
||||
critical part of the code.
|
||||
*/
|
||||
#define PNG_USE_CONST
|
||||
* and warning message functions, so some compilers won't complain.
|
||||
* If you do not want to use const, define PNG_NO_CONST here.
|
||||
*/
|
||||
|
||||
#ifdef PNG_USE_CONST
|
||||
#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. */
|
||||
* 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 */
|
||||
#define PNG_PROGRESSIVE_READ_SUPPORTED
|
||||
#define PNG_READ_OPT_PLTE_SUPPORTED
|
||||
#define PNG_READ_INTERLACING_SUPPORTED
|
||||
|
||||
/* 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
|
||||
/* the following aren't implemented yet
|
||||
#ifndef PNG_NO_READ_RGB_TO_GRAY
|
||||
#define PNG_READ_RGB_TO_GRAY_SUPPORTED
|
||||
#endif
|
||||
*/
|
||||
#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
|
||||
|
||||
#undef PNG_READ_STRIP_ALPHA_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 */
|
||||
|
||||
#define PNG_WRITE_INTERLACING_SUPPORTED
|
||||
#ifndef PNG_NO_READ_COMPOSITED_NODIV
|
||||
#define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel and SGI */
|
||||
#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 */
|
||||
#define PNG_WRITE_FLUSH_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_WRITE_SWAP_ALPHA
|
||||
#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
|
||||
#define PNG_WRITE_WEIGHTED_FILTER_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 */
|
||||
|
||||
/* These are currently experimental features */
|
||||
#undef PNG_READ_16_TO_8_ACCURATE_SHIFT_SUPPORTED /* very little testing */
|
||||
#undef PNG_READ_COMPOSITE_NODIV_SUPPORTED /* very little testing */
|
||||
#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_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
|
||||
|
||||
/* 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 */
|
||||
#undef PNG_READ_BIG_ENDIAN_SUPPORTED /* some testing */
|
||||
/* some testing */
|
||||
/*
|
||||
#define PNG_READ_BIG_ENDIAN_SUPPORTED
|
||||
*/
|
||||
|
||||
/* These functions are turned off by default, as they will be phased out. */
|
||||
#undef PNG_USE_OWN_CRC
|
||||
/*
|
||||
#define PNG_USELESS_TESTS_SUPPORTED
|
||||
#undef PNG_CORRECT_PALETTE_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. OPT_PLTE only disables the optional palette in RGB
|
||||
* and RGBA images.
|
||||
* a bit smaller.
|
||||
*/
|
||||
|
||||
#define PNG_READ_bKGD_SUPPORTED
|
||||
#define PNG_READ_cHRM_SUPPORTED
|
||||
#define PNG_READ_gAMA_SUPPORTED
|
||||
#define PNG_READ_hIST_SUPPORTED
|
||||
#define PNG_READ_oFFs_SUPPORTED
|
||||
#define PNG_READ_pCAL_SUPPORTED
|
||||
#define PNG_READ_pHYs_SUPPORTED
|
||||
#define PNG_READ_sBIT_SUPPORTED
|
||||
#define PNG_READ_tEXt_SUPPORTED
|
||||
#define PNG_READ_tIME_SUPPORTED
|
||||
#define PNG_READ_tRNS_SUPPORTED
|
||||
#define PNG_READ_zTXt_SUPPORTED
|
||||
#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
|
||||
#ifndef PNG_NO_READ_bKGD
|
||||
#define PNG_READ_bKGD_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_cHRM
|
||||
#define PNG_READ_cHRM_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_gAMA
|
||||
#define PNG_READ_gAMA_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_hIST
|
||||
#define PNG_READ_hIST_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_oFFs
|
||||
#define PNG_READ_oFFs_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_pCAL
|
||||
#define PNG_READ_pCAL_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_pHYs
|
||||
#define PNG_READ_pHYs_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_sBIT
|
||||
#define PNG_READ_sBIT_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_sRGB
|
||||
#define PNG_READ_sRGB_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_tEXt
|
||||
#define PNG_READ_tEXt_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_tIME
|
||||
#define PNG_READ_tIME_SUPPORTED
|
||||
#endif
|
||||
#ifndef PNG_NO_READ_tRNS
|
||||
#define PNG_READ_tRNS_SUPPORTED
|
||||
#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
|
||||
|
|
@ -333,18 +568,19 @@ typedef size_t png_size_t;
|
|||
#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)
|
||||
* 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) */
|
||||
* FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
|
||||
* making reliance oncertain keywords suspect. (SJT)
|
||||
*/
|
||||
|
||||
/* MSC Medium model */
|
||||
#if defined(FAR)
|
||||
|
|
@ -357,13 +593,12 @@ typedef size_t png_size_t;
|
|||
|
||||
/* SJT: default case */
|
||||
#ifndef FAR
|
||||
# define FAR
|
||||
# define FAR
|
||||
#endif
|
||||
|
||||
#define FAR
|
||||
/* At this point FAR is always defined */
|
||||
#ifndef FARDATA
|
||||
#define FARDATA
|
||||
#ifndef FARDATA
|
||||
#define FARDATA
|
||||
#endif
|
||||
|
||||
/* Add typedefs for pointers */
|
||||
|
|
@ -396,28 +631,39 @@ typedef char FAR * FAR * FAR * png_charppp;
|
|||
*/
|
||||
typedef charf * png_zcharp;
|
||||
typedef charf * FAR * png_zcharpp;
|
||||
typedef z_stream FAR * png_zstreamp;
|
||||
typedef z_stream FAR * png_zstreamp;
|
||||
|
||||
|
||||
/* allow for compilation as dll under windows */
|
||||
/* allow for compilation as dll under MS Windows */
|
||||
#ifdef __WIN32DLL__
|
||||
#define PNG_EXPORT(type,symbol) __declspec(dllexport) type 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
|
||||
|
||||
#ifndef PNG_EXPORT
|
||||
#define PNG_EXPORT(t,s) t s
|
||||
#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. */
|
||||
* 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) (far_to_near(png_ptr,ptr,CHECK))
|
||||
# define CVT_PTR_NOCHECK(ptr) (far_to_near(png_ptr,ptr,NOCHECK))
|
||||
# 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
|
||||
|
|
@ -425,6 +671,7 @@ typedef z_stream FAR * png_zstreamp;
|
|||
#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
|
||||
|
|
@ -435,10 +682,10 @@ typedef z_stream FAR * png_zstreamp;
|
|||
/* 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 */
|
||||
|
||||
|
|
|
|||
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