зеркало из https://github.com/mozilla/gecko-dev.git
1382 строки
41 KiB
C
1382 строки
41 KiB
C
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/* pngconf.h - machine configurable file for libpng
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*
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* libpng version 1.2.7 - September 12, 2004
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* For conditions of distribution and use, see copyright notice in png.h
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* Copyright (c) 1998-2004 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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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 include defines the subset of the libpng library that
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* mozilla utilizes.
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*/
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#include "mozpngconf.h"
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#ifdef PNG_USER_CONFIG
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#include "pngusr.h"
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#endif
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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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/* Enable if you want a write-only libpng */
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#ifndef PNG_NO_READ_SUPPORTED
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# define PNG_READ_SUPPORTED
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#endif
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/* Enable if you want a read-only libpng */
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#ifndef PNG_NO_WRITE_SUPPORTED
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# define PNG_WRITE_SUPPORTED
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#endif
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/* Enabled by default in 1.2.0. You can disable this if you don't need to
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support PNGs that are embedded in MNG datastreams */
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#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
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# ifndef PNG_MNG_FEATURES_SUPPORTED
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# define PNG_MNG_FEATURES_SUPPORTED
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# endif
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#endif
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#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
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# ifndef PNG_FLOATING_POINT_SUPPORTED
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# define PNG_FLOATING_POINT_SUPPORTED
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# endif
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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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/* Special munging to support doing things the 'cygwin' way:
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* 'Normal' png-on-win32 defines/defaults:
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* PNG_BUILD_DLL -- building dll
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* PNG_USE_DLL -- building an application, linking to dll
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* (no define) -- building static library, or building an
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* application and linking to the static lib
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* 'Cygwin' defines/defaults:
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* PNG_BUILD_DLL -- (ignored) building the dll
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* (no define) -- (ignored) building an application, linking to the dll
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* PNG_STATIC -- (ignored) building the static lib, or building an
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* application that links to the static lib.
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* ALL_STATIC -- (ignored) building various static libs, or building an
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* application that links to the static libs.
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* Thus,
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* a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
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* this bit of #ifdefs will define the 'correct' config variables based on
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* that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
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* unnecessary.
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*
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* Also, the precedence order is:
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* ALL_STATIC (since we can't #undef something outside our namespace)
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* PNG_BUILD_DLL
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* PNG_STATIC
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* (nothing) == PNG_USE_DLL
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*
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* CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
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* of auto-import in binutils, we no longer need to worry about
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* __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
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* we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
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* to __declspec() stuff. However, we DO need to worry about
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* PNG_BUILD_DLL and PNG_STATIC because those change some defaults
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* such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
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*/
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#if defined(__CYGWIN__)
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# if defined(ALL_STATIC)
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# if defined(PNG_BUILD_DLL)
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# undef PNG_BUILD_DLL
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# endif
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# if defined(PNG_USE_DLL)
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# undef PNG_USE_DLL
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# endif
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# if defined(PNG_DLL)
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# undef PNG_DLL
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# endif
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# if !defined(PNG_STATIC)
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# define PNG_STATIC
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# endif
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# else
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# if defined (PNG_BUILD_DLL)
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# if defined(PNG_STATIC)
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# undef PNG_STATIC
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# endif
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# if defined(PNG_USE_DLL)
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# undef PNG_USE_DLL
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# endif
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# if !defined(PNG_DLL)
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# define PNG_DLL
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# endif
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# else
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# if defined(PNG_STATIC)
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# if defined(PNG_USE_DLL)
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# undef PNG_USE_DLL
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# endif
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# if defined(PNG_DLL)
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# undef PNG_DLL
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# endif
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# else
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# if !defined(PNG_USE_DLL)
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# define PNG_USE_DLL
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# endif
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# if !defined(PNG_DLL)
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# define PNG_DLL
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# endif
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# endif
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# endif
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# endif
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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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#if defined(_WIN32_WCE)
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# include <windows.h>
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/* Console I/O functions are not supported on WindowsCE */
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# define PNG_NO_CONSOLE_IO
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# ifdef PNG_DEBUG
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# undef PNG_DEBUG
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# endif
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#endif
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#ifdef PNG_BUILD_DLL
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# ifndef PNG_CONSOLE_IO_SUPPORTED
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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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# endif
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#endif
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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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# if !defined(_WIN32_WCE)
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/* "stdio.h" functions are not supported on WindowsCE */
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# include <stdio.h>
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# endif
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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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# ifndef PNG_TYPECAST_NULL
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# define PNG_TYPECAST_NULL
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# endif
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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) && !defined(_WIN32_WCE)
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# include <sys/types.h>
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#endif
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#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
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# define PNG_SETJMP_SUPPORTED
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#endif
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#ifdef PNG_SETJMP_SUPPORTED
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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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/* If you encounter a compiler error here, see the explanation
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* near the end of INSTALL.
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*/
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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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#endif /* PNG_SETJMP_SUPPORTED */
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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(PNG_FLOATING_POINT_SUPPORTED)
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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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# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
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/* Amiga SAS/C: We must include builtin FPU functions when compiling using
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* MATH=68881
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*/
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# include <m68881.h>
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# endif
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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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/* This provides the non-ANSI (far) memory allocation routines. */
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#if defined(__TURBOC__) && defined(__MSDOS__)
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# include <mem.h>
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# include <alloc.h>
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#endif
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/* I have no idea why is this necessary... */
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#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
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defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
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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 features 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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/* The size of the png_text structure changed in libpng-1.0.6 when
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* iTXt is supported. It is turned off by default, to support old apps
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* that malloc the png_text structure instead of calling png_set_text()
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* and letting libpng malloc it. It will be turned on by default in
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* libpng-1.3.0.
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*/
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#ifndef PNG_iTXt_SUPPORTED
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# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
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# define PNG_NO_READ_iTXt
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# endif
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# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
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# define PNG_NO_WRITE_iTXt
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# endif
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#endif
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/* The following support, added after version 1.0.0, can be turned off here en
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* masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
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* with old applications that require the length of png_struct and png_info
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* to remain unchanged.
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*/
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#ifdef PNG_LEGACY_SUPPORTED
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# define PNG_NO_FREE_ME
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# define PNG_NO_READ_UNKNOWN_CHUNKS
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# define PNG_NO_WRITE_UNKNOWN_CHUNKS
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# define PNG_NO_READ_USER_CHUNKS
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# define PNG_NO_READ_iCCP
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# define PNG_NO_WRITE_iCCP
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# define PNG_NO_READ_iTXt
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# define PNG_NO_WRITE_iTXt
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# define PNG_NO_READ_sCAL
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# define PNG_NO_WRITE_sCAL
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# define PNG_NO_READ_sPLT
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# define PNG_NO_WRITE_sPLT
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# define PNG_NO_INFO_IMAGE
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# define PNG_NO_READ_RGB_TO_GRAY
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# define PNG_NO_READ_USER_TRANSFORM
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# define PNG_NO_WRITE_USER_TRANSFORM
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# define PNG_NO_USER_MEM
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# define PNG_NO_READ_EMPTY_PLTE
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# define PNG_NO_MNG_FEATURES
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# define PNG_NO_FIXED_POINT_SUPPORTED
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#endif
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/* Ignore attempt to turn off both floating and fixed point support */
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#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
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!defined(PNG_NO_FIXED_POINT_SUPPORTED)
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# define PNG_FIXED_POINT_SUPPORTED
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#endif
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#ifndef PNG_NO_FREE_ME
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# define PNG_FREE_ME_SUPPORTED
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#endif
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#if defined(PNG_READ_SUPPORTED)
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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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#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
|
|
# 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_COMPOSITE_NODIV
|
|
# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
|
|
# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
|
|
# endif
|
|
#endif
|
|
|
|
/* Deprecated, will be removed from version 2.0.0.
|
|
Use PNG_MNG_FEATURES_SUPPORTED instead. */
|
|
#ifndef PNG_NO_READ_EMPTY_PLTE
|
|
# define PNG_READ_EMPTY_PLTE_SUPPORTED
|
|
#endif
|
|
|
|
#endif /* PNG_READ_SUPPORTED */
|
|
|
|
#if defined(PNG_WRITE_SUPPORTED)
|
|
|
|
# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
|
|
!defined(PNG_NO_WRITE_TRANSFORMS)
|
|
# define PNG_WRITE_TRANSFORMS_SUPPORTED
|
|
#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 /* 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 */
|
|
|
|
#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
|
|
defined(PNG_FLOATING_POINT_SUPPORTED)
|
|
# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
|
|
#endif
|
|
|
|
#ifndef PNG_NO_WRITE_FLUSH
|
|
# define PNG_WRITE_FLUSH_SUPPORTED
|
|
#endif
|
|
|
|
/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
|
|
#ifndef PNG_NO_WRITE_EMPTY_PLTE
|
|
# define PNG_WRITE_EMPTY_PLTE_SUPPORTED
|
|
#endif
|
|
|
|
#endif /* PNG_WRITE_SUPPORTED */
|
|
|
|
#ifndef PNG_1_0_X
|
|
# ifndef PNG_NO_ERROR_NUMBERS
|
|
# define PNG_ERROR_NUMBERS_SUPPORTED
|
|
# endif
|
|
#endif /* PNG_1_0_X */
|
|
|
|
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
|
|
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
|
|
# ifndef PNG_NO_USER_TRANSFORM_PTR
|
|
# define PNG_USER_TRANSFORM_PTR_SUPPORTED
|
|
# endif
|
|
#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()
|
|
*/
|
|
#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
|
|
# define PNG_EASY_ACCESS_SUPPORTED
|
|
#endif
|
|
|
|
/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
|
|
even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */
|
|
#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
|
|
# ifndef PNG_ASSEMBLER_CODE_SUPPORTED
|
|
# define PNG_ASSEMBLER_CODE_SUPPORTED
|
|
# endif
|
|
# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
|
|
# define PNG_MMX_CODE_SUPPORTED
|
|
# endif
|
|
#endif
|
|
|
|
/* If you are sure that you don't need thread safety and you are compiling
|
|
with PNG_USE_PNGCCRD for an MMX application, you can define this for
|
|
faster execution. See pnggccrd.c.
|
|
#define PNG_THREAD_UNSAFE_OK
|
|
*/
|
|
|
|
#if !defined(PNG_1_0_X)
|
|
#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
|
|
# define PNG_USER_MEM_SUPPORTED
|
|
#endif
|
|
#endif /* PNG_1_0_X */
|
|
|
|
/* Added at libpng-1.2.6 */
|
|
#if !defined(PNG_1_0_X)
|
|
#ifndef PNG_SET_USER_LIMITS_SUPPORTED
|
|
#if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
|
|
# define PNG_SET_USER_LIMITS_SUPPORTED
|
|
#endif
|
|
#endif
|
|
#endif /* PNG_1_0_X */
|
|
|
|
/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
|
|
* how large, set these limits to 0x7fffffffL
|
|
*/
|
|
#ifndef PNG_USER_WIDTH_MAX
|
|
# define PNG_USER_WIDTH_MAX 1000000L
|
|
#endif
|
|
#ifndef PNG_USER_HEIGHT_MAX
|
|
# define PNG_USER_HEIGHT_MAX 1000000L
|
|
#endif
|
|
|
|
/* These are currently experimental features, define them if you want */
|
|
|
|
/* very little testing */
|
|
/*
|
|
#ifdef PNG_READ_SUPPORTED
|
|
# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
|
|
# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
|
|
# endif
|
|
#endif
|
|
*/
|
|
|
|
/* This is only for PowerPC big-endian and 680x0 systems */
|
|
/* some testing */
|
|
/*
|
|
#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
|
|
# define PNG_READ_BIG_ENDIAN_SUPPORTED
|
|
#endif
|
|
*/
|
|
|
|
/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
|
|
/*
|
|
#define PNG_NO_POINTER_INDEXING
|
|
*/
|
|
|
|
/* 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_SUPPORTED) && \
|
|
!defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
|
|
!defined(PNG_NO_READ_ANCILLARY_CHUNKS)
|
|
# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
|
|
#endif
|
|
|
|
#if defined(PNG_WRITE_SUPPORTED) && \
|
|
!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
|
|
# ifndef PNG_READ_iTXt_SUPPORTED
|
|
# define PNG_READ_iTXt_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_iTXt_SUPPORTED
|
|
# define PNG_iTXt_SUPPORTED
|
|
# endif
|
|
#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_UNKNOWN_CHUNKS
|
|
# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
|
|
# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
|
|
# define PNG_UNKNOWN_CHUNKS_SUPPORTED
|
|
# endif
|
|
# ifndef PNG_NO_HANDLE_AS_UNKNOWN
|
|
# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
|
|
# endif
|
|
#endif
|
|
#if !defined(PNG_NO_READ_USER_CHUNKS) && \
|
|
defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
|
|
# 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_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
|
|
# ifndef PNG_WRITE_iTXt_SUPPORTED
|
|
# define PNG_WRITE_iTXt_SUPPORTED
|
|
# endif
|
|
# 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)
|
|
# if !defined(_WIN32_WCE)
|
|
/* "time.h" functions are not supported on WindowsCE */
|
|
# include <time.h>
|
|
# endif
|
|
#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) */
|
|
#ifdef PNG_SIZE_T
|
|
typedef PNG_SIZE_T png_size_t;
|
|
# define png_sizeof(x) png_convert_size(sizeof (x))
|
|
#else
|
|
typedef size_t png_size_t;
|
|
# define png_sizeof(x) sizeof (x)
|
|
#endif
|
|
|
|
/* 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
|
|
/* GRR: why is Cygwin in here? Cygwin is not Borland C... */
|
|
# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
|
|
# 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__, __CYGWIN__ */
|
|
#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;
|
|
|
|
#ifndef PNG_NO_STDIO
|
|
#if defined(_WIN32_WCE)
|
|
typedef HANDLE png_FILE_p;
|
|
#else
|
|
typedef FILE * png_FILE_p;
|
|
#endif
|
|
#endif
|
|
|
|
#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;
|
|
|
|
/*
|
|
* Define PNG_BUILD_DLL if the module being built is a Windows
|
|
* LIBPNG DLL.
|
|
*
|
|
* Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
|
|
* It is equivalent to Microsoft predefined macro _DLL that is
|
|
* automatically defined when you compile using the share
|
|
* version of the CRT (C Run-Time library)
|
|
*
|
|
* The cygwin mods make this behavior a little different:
|
|
* Define PNG_BUILD_DLL if you are building a dll for use with cygwin
|
|
* Define PNG_STATIC if you are building a static library for use with cygwin,
|
|
* -or- if you are building an application that you want to link to the
|
|
* static library.
|
|
* PNG_USE_DLL is defined by default (no user action needed) unless one of
|
|
* the other flags is defined.
|
|
*/
|
|
|
|
#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
|
|
# define PNG_DLL
|
|
#endif
|
|
/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
|
|
* When building a static lib, default to no GLOBAL ARRAYS, but allow
|
|
* command-line override
|
|
*/
|
|
#if defined(__CYGWIN__)
|
|
# if !defined(PNG_STATIC)
|
|
# if defined(PNG_USE_GLOBAL_ARRAYS)
|
|
# undef PNG_USE_GLOBAL_ARRAYS
|
|
# endif
|
|
# if !defined(PNG_USE_LOCAL_ARRAYS)
|
|
# define PNG_USE_LOCAL_ARRAYS
|
|
# endif
|
|
# else
|
|
# if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
|
|
# if defined(PNG_USE_GLOBAL_ARRAYS)
|
|
# undef PNG_USE_GLOBAL_ARRAYS
|
|
# endif
|
|
# endif
|
|
# endif
|
|
# if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
|
|
# define PNG_USE_LOCAL_ARRAYS
|
|
# endif
|
|
#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.
|
|
*/
|
|
#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
|
|
# if defined(PNG_NO_GLOBAL_ARRAYS) || (defined(__GNUC__) && defined(PNG_DLL))
|
|
# define PNG_USE_LOCAL_ARRAYS
|
|
# else
|
|
# define PNG_USE_GLOBAL_ARRAYS
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(__CYGWIN__)
|
|
# undef PNGAPI
|
|
# define PNGAPI __cdecl
|
|
# undef PNG_IMPEXP
|
|
# define PNG_IMPEXP
|
|
#endif
|
|
|
|
/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
|
|
* you may get warnings regarding the linkage of png_zalloc and png_zfree.
|
|
* Don't ignore those warnings; you must also reset the default calling
|
|
* convention in your compiler to match your PNGAPI, and you must build
|
|
* zlib and your applications the same way you build libpng.
|
|
*/
|
|
|
|
#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
|
|
# ifndef PNG_NO_MODULEDEF
|
|
# define PNG_NO_MODULEDEF
|
|
# endif
|
|
#endif
|
|
|
|
#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
|
|
# define PNG_IMPEXP
|
|
#endif
|
|
|
|
#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
|
|
(( defined(_Windows) || defined(_WINDOWS) || \
|
|
defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
|
|
|
|
# ifndef PNGAPI
|
|
# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
|
|
# define PNGAPI __cdecl
|
|
# else
|
|
# define PNGAPI _cdecl
|
|
# endif
|
|
# endif
|
|
|
|
# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
|
|
0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
|
|
# define PNG_IMPEXP
|
|
# endif
|
|
|
|
# if !defined(PNG_IMPEXP)
|
|
|
|
# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
|
|
# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
|
|
|
|
/* Borland/Microsoft */
|
|
# if defined(_MSC_VER) || defined(__BORLANDC__)
|
|
# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
|
|
# define PNG_EXPORT PNG_EXPORT_TYPE1
|
|
# else
|
|
# define PNG_EXPORT PNG_EXPORT_TYPE2
|
|
# if defined(PNG_BUILD_DLL)
|
|
# define PNG_IMPEXP __export
|
|
# else
|
|
# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
|
|
VC++ */
|
|
# endif /* Exists in Borland C++ for
|
|
C++ classes (== huge) */
|
|
# endif
|
|
# endif
|
|
|
|
# if !defined(PNG_IMPEXP)
|
|
# if defined(PNG_BUILD_DLL)
|
|
# define PNG_IMPEXP __declspec(dllexport)
|
|
# else
|
|
# define PNG_IMPEXP __declspec(dllimport)
|
|
# endif
|
|
# endif
|
|
# endif /* PNG_IMPEXP */
|
|
#else /* !(DLL || non-cygwin WINDOWS) */
|
|
# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
|
|
# ifndef PNGAPI
|
|
# define PNGAPI _System
|
|
# endif
|
|
# else
|
|
# if 0 /* ... other platforms, with other meanings */
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef PNGAPI
|
|
# define PNGAPI
|
|
#endif
|
|
#ifndef PNG_IMPEXP
|
|
# define PNG_IMPEXP
|
|
#endif
|
|
|
|
#ifndef PNG_EXPORT
|
|
# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
|
|
#endif
|
|
|
|
#ifdef PNG_USE_GLOBAL_ARRAYS
|
|
# ifndef PNG_EXPORT_VAR
|
|
# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
|
|
# endif
|
|
#endif
|
|
|
|
/* User may want to use these so they are 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_strncpy _fstrncpy /* Added to v 1.2.6 */
|
|
# 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_strncpy strncpy /* Added to v 1.2.6 */
|
|
# 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 > 65536L) && defined(PNG_MAX_MALLOC_64K)
|
|
# undef PNG_ZBUF_SIZE
|
|
# define PNG_ZBUF_SIZE 65536L
|
|
#endif
|
|
|
|
#ifdef PNG_READ_SUPPORTED
|
|
/* Prior to libpng-1.0.9, this block was in pngasmrd.h */
|
|
#if defined(PNG_INTERNAL)
|
|
|
|
/* These are the default thresholds before the MMX code kicks in; if either
|
|
* rowbytes or bitdepth is below the threshold, plain C code is used. These
|
|
* can be overridden at runtime via the png_set_mmx_thresholds() call in
|
|
* libpng 1.2.0 and later. The values below were chosen by Intel.
|
|
*/
|
|
|
|
#ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT
|
|
# define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 128 /* >= */
|
|
#endif
|
|
#ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT
|
|
# define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 9 /* >= */
|
|
#endif
|
|
|
|
/* Set this in the makefile for VC++ on Pentium, not here. */
|
|
/* Platform must be Pentium. Makefile must assemble and load pngvcrd.c .
|
|
* MMX will be detected at run time and used if present.
|
|
*/
|
|
#ifdef PNG_USE_PNGVCRD
|
|
# define PNG_HAVE_ASSEMBLER_COMBINE_ROW
|
|
# define PNG_HAVE_ASSEMBLER_READ_INTERLACE
|
|
# define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
|
|
#endif
|
|
|
|
/* Set this in the makefile for gcc/as on Pentium, not here. */
|
|
/* Platform must be Pentium. Makefile must assemble and load pnggccrd.c .
|
|
* MMX will be detected at run time and used if present.
|
|
*/
|
|
#ifdef PNG_USE_PNGGCCRD
|
|
# define PNG_HAVE_ASSEMBLER_COMBINE_ROW
|
|
# define PNG_HAVE_ASSEMBLER_READ_INTERLACE
|
|
# define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
|
|
#endif
|
|
/* - see pnggccrd.c for info about what is currently enabled */
|
|
|
|
#endif /* PNG_INTERNAL */
|
|
#endif /* PNG_READ_SUPPORTED */
|
|
|
|
#endif /* PNGCONF_H */
|
|
|