/* pngconf.h - machine configurable file for libpng
*
- * libpng version 1.4.4 - September 23, 2010
- * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * libpng version 1.6.2 - April 25, 2013
+ *
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
#ifndef PNGCONF_H
#define PNGCONF_H
-#ifdef __DMC__
-#define PNG_NO_SNPRINTF
-#endif
-
-#ifndef PNG_NO_LIMITS_H
-# include <limits.h>
-#endif
-
-/* Added at libpng-1.2.9 */
-
-/* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure"
- * script.
- */
-#ifdef PNG_CONFIGURE_LIBPNG
-# ifdef HAVE_CONFIG_H
-# include "config.h"
+/* To do: Do all of this in scripts/pnglibconf.dfa */
+#ifdef PNG_SAFE_LIMITS_SUPPORTED
+# ifdef PNG_USER_WIDTH_MAX
+# undef PNG_USER_WIDTH_MAX
+# define PNG_USER_WIDTH_MAX 1000000L
# endif
-#endif
-
-/*
- * Added at libpng-1.2.8
- *
- * PNG_USER_CONFIG has to be defined on the compiler command line. This
- * includes the resource compiler for Windows DLL configurations.
- */
-#ifdef PNG_USER_CONFIG
-# include "pngusr.h"
-# ifndef PNG_USER_PRIVATEBUILD
-# define PNG_USER_PRIVATEBUILD
+# ifdef PNG_USER_HEIGHT_MAX
+# undef PNG_USER_HEIGHT_MAX
+# define PNG_USER_HEIGHT_MAX 1000000L
# endif
-#endif
-
-/*
- * If you create a private DLL you should define in "pngusr.h" the following:
- * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
- * the DLL was built>
- * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
- * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
- * distinguish your DLL from those of the official release. These
- * correspond to the trailing letters that come after the version
- * number and must match your private DLL name>
- * e.g. // private DLL "libpng14gx.dll"
- * #define PNG_USER_DLLFNAME_POSTFIX "gx"
- *
- * The following macros are also at your disposal if you want to complete the
- * DLL VERSIONINFO structure.
- * - PNG_USER_VERSIONINFO_COMMENTS
- * - PNG_USER_VERSIONINFO_COMPANYNAME
- * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
- */
-
-#ifdef __STDC__
-# ifdef SPECIALBUILD
-# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
- are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
+# ifdef PNG_USER_CHUNK_MALLOC_MAX
+# undef PNG_USER_CHUNK_MALLOC_MAX
+# define PNG_USER_CHUNK_MALLOC_MAX 4000000L
# endif
-
-# ifdef PRIVATEBUILD
-# pragma message("PRIVATEBUILD is deprecated.\
- Use PNG_USER_PRIVATEBUILD instead.")
-# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
+# ifdef PNG_USER_CHUNK_CACHE_MAX
+# undef PNG_USER_CHUNK_CACHE_MAX
+# define PNG_USER_CHUNK_CACHE_MAX 128
# endif
-#endif /* __STDC__ */
-
-/* End of material added to libpng-1.2.8 */
-
-#ifndef PNG_VERSION_INFO_ONLY
-
-/* This is the size of the compression buffer, and thus the size of
- * an IDAT chunk. Make this whatever size you feel is best for your
- * machine. One of these will be allocated per png_struct. When this
- * is full, it writes the data to the disk, and does some other
- * calculations. Making this an extremely small size will slow
- * the library down, but you may want to experiment to determine
- * where it becomes significant, if you are concerned with memory
- * usage. Note that zlib allocates at least 32Kb also. For readers,
- * this describes the size of the buffer available to read the data in.
- * Unless this gets smaller than the size of a row (compressed),
- * it should not make much difference how big this is.
- */
-
-#ifndef PNG_ZBUF_SIZE
-# define PNG_ZBUF_SIZE 8192
#endif
-/* Enable if you want a write-only libpng */
-
-#ifndef PNG_NO_READ_SUPPORTED
-# define PNG_READ_SUPPORTED
-#endif
-
-/* Enable if you want a read-only libpng */
-
-#ifndef PNG_NO_WRITE_SUPPORTED
-# define PNG_WRITE_SUPPORTED
-#endif
-
-/* Enabled in 1.4.0. */
-#ifdef PNG_ALLOW_BENIGN_ERRORS
-# define png_benign_error png_warning
-# define png_chunk_benign_error png_chunk_warning
-#else
-# ifndef PNG_BENIGN_ERRORS_SUPPORTED
-# define png_benign_error png_error
-# define png_chunk_benign_error png_chunk_error
-# endif
-#endif
+#ifndef PNG_BUILDING_SYMBOL_TABLE /* else includes may cause problems */
-/* Added at libpng version 1.4.0 */
-#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
-# define PNG_WARNINGS_SUPPORTED
-#endif
+/* From libpng 1.6.0 libpng requires an ANSI X3.159-1989 ("ISOC90") compliant C
+ * compiler for correct compilation. The following header files are required by
+ * the standard. If your compiler doesn't provide these header files, or they
+ * do not match the standard, you will need to provide/improve them.
+ */
+#include <limits.h>
+#include <stddef.h>
-/* Added at libpng version 1.4.0 */
-#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
-# define PNG_ERROR_TEXT_SUPPORTED
-#endif
+/* Library header files. These header files are all defined by ISOC90; libpng
+ * expects conformant implementations, however, an ISOC90 conformant system need
+ * not provide these header files if the functionality cannot be implemented.
+ * In this case it will be necessary to disable the relevant parts of libpng in
+ * the build of pnglibconf.h.
+ *
+ * Prior to 1.6.0 string.h was included here; the API changes in 1.6.0 to not
+ * include this unnecessary header file.
+ */
-/* Added at libpng version 1.4.0 */
-#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
-# define PNG_CHECK_cHRM_SUPPORTED
+#ifdef PNG_STDIO_SUPPORTED
+ /* Required for the definition of FILE: */
+# include <stdio.h>
#endif
-/* Added at libpng version 1.4.0 */
-#if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
-# define PNG_ALIGNED_MEMORY_SUPPORTED
+#ifdef PNG_SETJMP_SUPPORTED
+ /* Required for the definition of jmp_buf and the declaration of longjmp: */
+# include <setjmp.h>
#endif
-/* Enabled by default in 1.2.0. You can disable this if you don't need to
- support PNGs that are embedded in MNG datastreams */
-#ifndef PNG_NO_MNG_FEATURES
-# ifndef PNG_MNG_FEATURES_SUPPORTED
-# define PNG_MNG_FEATURES_SUPPORTED
-# endif
+#ifdef PNG_CONVERT_tIME_SUPPORTED
+ /* Required for struct tm: */
+# include <time.h>
#endif
-/* Added at libpng version 1.4.0 */
-#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
-# ifndef PNG_FLOATING_POINT_SUPPORTED
-# define PNG_FLOATING_POINT_SUPPORTED
-# endif
-#endif
+#endif /* PNG_BUILDING_SYMBOL_TABLE */
-/* Added at libpng-1.4.0beta49 for testing (this test is no longer used
- in libpng and png_calloc() is always present)
+/* Prior to 1.6.0 it was possible to turn off 'const' in declarations using
+ * PNG_NO_CONST; this is no longer supported except for data declarations which
+ * apparently still cause problems in 2011 on some compilers.
*/
-#define PNG_CALLOC_SUPPORTED
+#define PNG_CONST const /* backward compatibility only */
-/* If you are running on a machine where you cannot allocate more
- * than 64K of memory at once, uncomment this. While libpng will not
- * normally need that much memory in a chunk (unless you load up a very
- * large file), zlib needs to know how big of a chunk it can use, and
- * libpng thus makes sure to check any memory allocation to verify it
- * will fit into memory.
-#define PNG_MAX_MALLOC_64K
+/* This controls optimization of the reading of 16 and 32 bit values
+ * from PNG files. It can be set on a per-app-file basis - it
+ * just changes whether a macro is used when the function is called.
+ * The library builder sets the default; if read functions are not
+ * built into the library the macro implementation is forced on.
*/
-#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
-# define PNG_MAX_MALLOC_64K
+#ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED
+# define PNG_USE_READ_MACROS
#endif
-
-/* Special munging to support doing things the 'cygwin' way:
- * 'Normal' png-on-win32 defines/defaults:
- * PNG_BUILD_DLL -- building dll
- * PNG_USE_DLL -- building an application, linking to dll
- * (no define) -- building static library, or building an
- * application and linking to the static lib
- * 'Cygwin' defines/defaults:
- * PNG_BUILD_DLL -- (ignored) building the dll
- * (no define) -- (ignored) building an application, linking to the dll
- * PNG_STATIC -- (ignored) building the static lib, or building an
- * application that links to the static lib.
- * ALL_STATIC -- (ignored) building various static libs, or building an
- * application that links to the static libs.
- * Thus,
- * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
- * this bit of #ifdefs will define the 'correct' config variables based on
- * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
- * unnecessary.
- *
- * Also, the precedence order is:
- * ALL_STATIC (since we can't #undef something outside our namespace)
- * PNG_BUILD_DLL
- * PNG_STATIC
- * (nothing) == PNG_USE_DLL
- *
- * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
- * of auto-import in binutils, we no longer need to worry about
- * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
- * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
- * to __declspec() stuff. However, we DO need to worry about
- * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
- * such as CONSOLE_IO.
- */
-#ifdef __CYGWIN__
-# ifdef ALL_STATIC
-# ifdef PNG_BUILD_DLL
-# undef PNG_BUILD_DLL
-# endif
-# ifdef PNG_USE_DLL
-# undef PNG_USE_DLL
-# endif
-# ifdef PNG_DLL
-# undef PNG_DLL
-# endif
-# ifndef PNG_STATIC
-# define PNG_STATIC
-# endif
-# else
-# ifdef PNG_BUILD_DLL
-# ifdef PNG_STATIC
-# undef PNG_STATIC
-# endif
-# ifdef PNG_USE_DLL
-# undef PNG_USE_DLL
-# endif
-# ifndef PNG_DLL
-# define PNG_DLL
-# endif
-# else
-# ifdef PNG_STATIC
-# ifdef PNG_USE_DLL
-# undef PNG_USE_DLL
-# endif
-# ifdef PNG_DLL
-# undef PNG_DLL
-# endif
-# else
-# ifndef PNG_USE_DLL
-# define PNG_USE_DLL
-# endif
-# ifndef PNG_DLL
-# define PNG_DLL
-# endif
-# endif
-# endif
+#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
+# if PNG_DEFAULT_READ_MACROS
+# define PNG_USE_READ_MACROS
# endif
#endif
-/* This protects us against compilers that run on a windowing system
- * and thus don't have or would rather us not use the stdio types:
- * stdin, stdout, and stderr. The only one currently used is stderr
- * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
- * prevent these from being compiled and used. #defining PNG_NO_STDIO
- * will also prevent these, plus will prevent the entire set of stdio
- * macros and functions (FILE *, printf, etc.) from being compiled and used,
- * unless (PNG_DEBUG > 0) has been #defined.
+/* COMPILER SPECIFIC OPTIONS.
*
- * #define PNG_NO_CONSOLE_IO
- * #define PNG_NO_STDIO
+ * These options are provided so that a variety of difficult compilers
+ * can be used. Some are fixed at build time (e.g. PNG_API_RULE
+ * below) but still have compiler specific implementations, others
+ * may be changed on a per-file basis when compiling against libpng.
*/
-#ifdef _WIN32_WCE
-# define PNG_NO_CONSOLE_IO
-# define PNG_NO_STDIO
-# define PNG_NO_TIME_RFC1123
-# ifdef PNG_DEBUG
-# undef PNG_DEBUG
-# endif
-#endif
-
-#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
-# define PNG_STDIO_SUPPORTED
-#endif
-
-#ifdef PNG_BUILD_DLL
-# if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
-# define PNG_NO_CONSOLE_IO
-# endif
-#endif
-
-# ifdef PNG_NO_STDIO
-# ifndef PNG_NO_CONSOLE_IO
-# define PNG_NO_CONSOLE_IO
-# endif
-# ifdef PNG_DEBUG
-# if (PNG_DEBUG > 0)
-# include <stdio.h>
-# endif
-# endif
-# else
-# include <stdio.h>
-# endif
-
-#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
-# define PNG_CONSOLE_IO_SUPPORTED
-#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.
+/* The PNGARG macro was used in versions of libpng prior to 1.6.0 to protect
+ * against legacy (pre ISOC90) compilers that did not understand function
+ * prototypes. It is not required for modern C compilers.
*/
#ifndef PNGARG
-
-#ifdef OF /* zlib prototype munger */
-# define PNGARG(arglist) OF(arglist)
-#else
-
-#ifdef _NO_PROTO
-# define PNGARG(arglist) ()
-#else
# define PNGARG(arglist) arglist
-#endif /* _NO_PROTO */
-
-#endif /* OF */
-
-#endif /* PNGARG */
-
-/* Try to determine if we are compiling on a Mac. Note that testing for
- * just __MWERKS__ is not good enough, because the Codewarrior is now used
- * on non-Mac platforms.
- */
-#ifndef MACOS
-# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
- defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
-# define MACOS
-# endif
-#endif
-
-/* Enough people need this for various reasons to include it here */
-#if !defined(MACOS) && !defined(RISCOS)
-# include <sys/types.h>
#endif
-/* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
-#if !defined(PNG_NO_SETJMP) && \
- !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
-# define PNG_SETJMP_SUPPORTED
-#endif
-
-#ifdef PNG_SETJMP_SUPPORTED
-/* This is an attempt to force a single setjmp behaviour on Linux. If
- * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
+/* Function calling conventions.
+ * =============================
+ * Normally it is not necessary to specify to the compiler how to call
+ * a function - it just does it - however on x86 systems derived from
+ * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
+ * and some others) there are multiple ways to call a function and the
+ * default can be changed on the compiler command line. For this reason
+ * libpng specifies the calling convention of every exported function and
+ * every function called via a user supplied function pointer. This is
+ * done in this file by defining the following macros:
*
- * You can bypass this test if you know that your application uses exactly
- * the same setjmp.h that was included when libpng was built. Only define
- * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
- * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
- * while building a separate libpng library for general use.
- */
+ * PNGAPI Calling convention for exported functions.
+ * PNGCBAPI Calling convention for user provided (callback) functions.
+ * PNGCAPI Calling convention used by the ANSI-C library (required
+ * for longjmp callbacks and sometimes used internally to
+ * specify the calling convention for zlib).
+ *
+ * These macros should never be overridden. If it is necessary to
+ * change calling convention in a private build this can be done
+ * by setting PNG_API_RULE (which defaults to 0) to one of the values
+ * below to select the correct 'API' variants.
+ *
+ * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout.
+ * This is correct in every known environment.
+ * PNG_API_RULE=1 Use the operating system convention for PNGAPI and
+ * the 'C' calling convention (from PNGCAPI) for
+ * callbacks (PNGCBAPI). This is no longer required
+ * in any known environment - if it has to be used
+ * please post an explanation of the problem to the
+ * libpng mailing list.
+ *
+ * These cases only differ if the operating system does not use the C
+ * calling convention, at present this just means the above cases
+ * (x86 DOS/Windows sytems) and, even then, this does not apply to
+ * Cygwin running on those systems.
+ *
+ * Note that the value must be defined in pnglibconf.h so that what
+ * the application uses to call the library matches the conventions
+ * set when building the library.
+ */
+
+/* Symbol export
+ * =============
+ * When building a shared library it is almost always necessary to tell
+ * the compiler which symbols to export. The png.h macro 'PNG_EXPORT'
+ * is used to mark the symbols. On some systems these symbols can be
+ * extracted at link time and need no special processing by the compiler,
+ * on other systems the symbols are flagged by the compiler and just
+ * the declaration requires a special tag applied (unfortunately) in a
+ * compiler dependent way. Some systems can do either.
+ *
+ * A small number of older systems also require a symbol from a DLL to
+ * be flagged to the program that calls it. This is a problem because
+ * we do not know in the header file included by application code that
+ * the symbol will come from a shared library, as opposed to a statically
+ * linked one. For this reason the application must tell us by setting
+ * the magic flag PNG_USE_DLL to turn on the special processing before
+ * it includes png.h.
+ *
+ * Four additional macros are used to make this happen:
+ *
+ * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from
+ * the build or imported if PNG_USE_DLL is set - compiler
+ * and system specific.
+ *
+ * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to
+ * 'type', compiler specific.
+ *
+ * PNG_DLL_EXPORT Set to the magic to use during a libpng build to
+ * make a symbol exported from the DLL. Not used in the
+ * public header files; see pngpriv.h for how it is used
+ * in the libpng build.
+ *
+ * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come
+ * from a DLL - used to define PNG_IMPEXP when
+ * PNG_USE_DLL is set.
+ */
+
+/* System specific discovery.
+ * ==========================
+ * This code is used at build time to find PNG_IMPEXP, the API settings
+ * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
+ * import processing is possible. On Windows systems it also sets
+ * compiler-specific macros to the values required to change the calling
+ * conventions of the various functions.
+ */
+#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
+ defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
+ /* Windows system (DOS doesn't support DLLs). Includes builds under Cygwin or
+ * MinGW on any architecture currently supported by Windows. Also includes
+ * Watcom builds but these need special treatment because they are not
+ * compatible with GCC or Visual C because of different calling conventions.
+ */
+# if PNG_API_RULE == 2
+ /* If this line results in an error, either because __watcall is not
+ * understood or because of a redefine just below you cannot use *this*
+ * build of the library with the compiler you are using. *This* build was
+ * build using Watcom and applications must also be built using Watcom!
+ */
+# define PNGCAPI __watcall
+# endif
-# ifndef PNG_SKIP_SETJMP_CHECK
-# ifdef __linux__
-# ifdef _BSD_SOURCE
-# define PNG_SAVE_BSD_SOURCE
-# undef _BSD_SOURCE
-# endif
-# ifdef _SETJMP_H
- /* If you encounter a compiler error here, see the explanation
- * near the end of INSTALL.
+# if defined(__GNUC__) || (defined(_MSC_VER) && (_MSC_VER >= 800))
+# define PNGCAPI __cdecl
+# if PNG_API_RULE == 1
+ /* If this line results in an error __stdcall is not understood and
+ * PNG_API_RULE should not have been set to '1'.
*/
- __pngconf.h__ in libpng already includes setjmp.h;
- __dont__ include it again.;
-# endif
-# endif /* __linux__ */
-# endif /* PNG_SKIP_SETJMP_CHECK */
-
- /* Include setjmp.h for error handling */
-# include <setjmp.h>
-
-# ifdef __linux__
-# ifdef PNG_SAVE_BSD_SOURCE
-# ifdef _BSD_SOURCE
-# undef _BSD_SOURCE
-# endif
-# define _BSD_SOURCE
-# undef PNG_SAVE_BSD_SOURCE
+# define PNGAPI __stdcall
# endif
-# endif /* __linux__ */
-#endif /* PNG_SETJMP_SUPPORTED */
-
-#ifdef BSD
-# include <strings.h>
-#else
-# include <string.h>
-#endif
-
-/* Other defines for things like memory and the like can go here. */
-
-/* This controls how fine the quantizing gets. As this allocates
- * a largish chunk of memory (32K), those who are not as concerned
- * with quantizing quality can decrease some or all of these.
- */
-
-/* Prior to libpng-1.4.2, these were PNG_DITHER_*_BITS
- * These migration aids will be removed from libpng-1.5.0.
- */
-#ifdef PNG_DITHER_RED_BITS
-# define PNG_QUANTIZE_RED_BITS PNG_DITHER_RED_BITS
-#endif
-#ifdef PNG_DITHER_GREEN_BITS
-# define PNG_QUANTIZE_GREEN_BITS PNG_DITHER_GREEN_BITS
-#endif
-#ifdef PNG_DITHER_BLUE_BITS
-# define PNG_QUANTIZE_BLUE_BITS PNG_DITHER_BLUE_BITS
-#endif
-
-#ifndef PNG_QUANTIZE_RED_BITS
-# define PNG_QUANTIZE_RED_BITS 5
-#endif
-#ifndef PNG_QUANTIZE_GREEN_BITS
-# define PNG_QUANTIZE_GREEN_BITS 5
-#endif
-#ifndef PNG_QUANTIZE_BLUE_BITS
-# define PNG_QUANTIZE_BLUE_BITS 5
-#endif
-
-/* This controls how fine the gamma correction becomes when you
- * are only interested in 8 bits anyway. Increasing this value
- * results in more memory being used, and more pow() functions
- * being called to fill in the gamma tables. Don't set this value
- * less then 8, and even that may not work (I haven't tested it).
- */
-
-#ifndef PNG_MAX_GAMMA_8
-# define PNG_MAX_GAMMA_8 11
-#endif
-
-/* This controls how much a difference in gamma we can tolerate before
- * we actually start doing gamma conversion.
- */
-#ifndef PNG_GAMMA_THRESHOLD
-# define PNG_GAMMA_THRESHOLD 0.05
-#endif
-
-/* The following uses const char * instead of char * for error
- * and warning message functions, so some compilers won't complain.
- * If you do not want to use const, define PNG_NO_CONST.
- */
-
-#ifndef PNG_CONST
-# ifndef PNG_NO_CONST
-# define PNG_CONST const
# else
-# define PNG_CONST
-# endif
-#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 an #undef, or pass in PNG_NO_feature 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 features you will not be using can be undef'ed here */
-
-/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
- * to turn it off with PNG_NO_READ|WRITE_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 PNG_NO_READ|WRITE_TRANSFORMS
- * 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; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
- * 1.4.0)
- */
-
-/* Ignore attempt to turn off both floating and fixed point support */
-#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
- !defined(PNG_NO_FIXED_POINT_SUPPORTED)
-# define PNG_FIXED_POINT_SUPPORTED
-#endif
-
-#ifdef PNG_READ_SUPPORTED
-
-/* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */
-#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
- !defined(PNG_NO_READ_TRANSFORMS)
-# define PNG_READ_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_QUANTIZE
- /* Prior to libpng-1.4.0 this was PNG_READ_DITHER_SUPPORTED */
-# ifndef PNG_NO_READ_DITHER /* This migration aid will be removed */
-# define PNG_READ_QUANTIZE_SUPPORTED
+ /* An older compiler, or one not detected (erroneously) above,
+ * if necessary override on the command line to get the correct
+ * variants for the compiler.
+ */
+# ifndef PNGCAPI
+# define PNGCAPI _cdecl
# endif
-# 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 */
-
-/* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
-#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 define: */
-
-#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
-
-/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
-#if !defined(PNG_NO_SEQUENTIAL_READ) && \
- !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
- !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
-# define PNG_SEQUENTIAL_READ_SUPPORTED
-#endif
-
-#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
-
-#if !defined(PNG_NO_GET_INT_32) || defined(PNG_READ_oFFS_SUPPORTED) || \
- defined(PNG_READ_pCAL_SUPPORTED)
-# ifndef PNG_GET_INT_32_SUPPORTED
-# define PNG_GET_INT_32_SUPPORTED
-# endif
-#endif
-
-#endif /* PNG_READ_SUPPORTED */
-
-#ifdef PNG_WRITE_SUPPORTED
-
-/* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
-#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 */
-
-#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
- !defined(PNG_WRITE_INTERLACING_SUPPORTED)
- /* This is not required for PNG-compliant encoders, but can cause
- * trouble if left undefined
- */
-# define PNG_WRITE_INTERLACING_SUPPORTED
-#endif
-
-#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
- !defined(PNG_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
-
-#if !defined(PNG_NO_SAVE_INT_32) || defined(PNG_WRITE_oFFS_SUPPORTED) || \
- defined(PNG_WRITE_pCAL_SUPPORTED)
-# ifndef PNG_SAVE_INT_32_SUPPORTED
-# define PNG_SAVE_INT_32_SUPPORTED
-# endif
-#endif
-
-#endif /* PNG_WRITE_SUPPORTED */
-
-#define PNG_NO_ERROR_NUMBERS
-
-#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
-
-#if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
-# 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
-
-/* Added at libpng-1.2.0 */
-#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
-# define PNG_USER_MEM_SUPPORTED
-#endif
-
-/* Added at libpng-1.2.6 */
-#ifndef PNG_NO_SET_USER_LIMITS
-# ifndef PNG_SET_USER_LIMITS_SUPPORTED
-# define PNG_SET_USER_LIMITS_SUPPORTED
-# endif
- /* Feature added at libpng-1.4.0, this flag added at 1.4.1 */
-# ifndef PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
-# define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
-# endif
- /* Feature added at libpng-1.4.1, this flag added at 1.4.1 */
-# ifndef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
-# define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
-# endif
-#endif
+# if PNG_API_RULE == 1 && !defined(PNGAPI)
+# define PNGAPI _stdcall
+# endif
+# endif /* compiler/api */
+ /* NOTE: PNGCBAPI always defaults to PNGCAPI. */
-/* Added at libpng-1.2.43 */
-#ifndef PNG_USER_LIMITS_SUPPORTED
-# ifndef PNG_NO_USER_LIMITS
-# define PNG_USER_LIMITS_SUPPORTED
+# if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
+# error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed"
# endif
-#endif
-
-/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
- * how large, set these two 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
-
-/* Added at libpng-1.2.43. To accept all valid PNGs no matter
- * how large, set these two limits to 0.
- */
-#ifndef PNG_USER_CHUNK_CACHE_MAX
-# define PNG_USER_CHUNK_CACHE_MAX 0
-#endif
-/* Added at libpng-1.2.43 */
-#ifndef PNG_USER_CHUNK_MALLOC_MAX
-# define PNG_USER_CHUNK_MALLOC_MAX 0
-#endif
-
-/* Added at libpng-1.4.0 */
-#if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
-# define PNG_IO_STATE_SUPPORTED
-#endif
-
-#ifndef PNG_LITERAL_SHARP
-# define PNG_LITERAL_SHARP 0x23
-#endif
-#ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
-# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
-#endif
-#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
-# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
-#endif
-#ifndef PNG_STRING_NEWLINE
-#define PNG_STRING_NEWLINE "\n"
-#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
-*/
+# if (defined(_MSC_VER) && _MSC_VER < 800) ||\
+ (defined(__BORLANDC__) && __BORLANDC__ < 0x500)
+ /* older Borland and MSC
+ * compilers used '__export' and required this to be after
+ * the type.
+ */
+# ifndef PNG_EXPORT_TYPE
+# define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
+# endif
+# define PNG_DLL_EXPORT __export
+# else /* newer compiler */
+# define PNG_DLL_EXPORT __declspec(dllexport)
+# ifndef PNG_DLL_IMPORT
+# define PNG_DLL_IMPORT __declspec(dllimport)
+# endif
+# endif /* compiler */
+
+#else /* !Windows */
+# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
+# define PNGAPI _System
+# else /* !Windows/x86 && !OS/2 */
+ /* Use the defaults, or define PNG*API on the command line (but
+ * this will have to be done for every compile!)
+ */
+# endif /* other system, !OS/2 */
+#endif /* !Windows/x86 */
-/* This is only for PowerPC big-endian and 680x0 systems */
-/* some testing */
-/*
-#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
-# define PNG_READ_BIG_ENDIAN_SUPPORTED
+/* Now do all the defaulting . */
+#ifndef PNGCAPI
+# define PNGCAPI
#endif
-*/
-
-#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
-# define PNG_USE_READ_MACROS
+#ifndef PNGCBAPI
+# define PNGCBAPI PNGCAPI
#endif
-
-/* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
-
-#if !defined(PNG_NO_POINTER_INDEXING) && \
- !defined(PNG_POINTER_INDEXING_SUPPORTED)
-# define PNG_POINTER_INDEXING_SUPPORTED
+#ifndef PNGAPI
+# define PNGAPI PNGCAPI
#endif
-
-/* 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.
+/* PNG_IMPEXP may be set on the compilation system command line or (if not set)
+ * then in an internal header file when building the library, otherwise (when
+ * using the library) it is set here.
*/
-
-/* The size of the png_text structure changed in libpng-1.0.6 when
- * iTXt support was added. iTXt support was turned off by default through
- * libpng-1.2.x, to support old apps that malloc the png_text structure
- * instead of calling png_set_text() and letting libpng malloc it. It
- * was turned on by default in libpng-1.4.0.
- */
-
-/* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
-#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
-
-/* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
-#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_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 */
-
-#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
-# ifndef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-# endif
-# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
-# define PNG_UNKNOWN_CHUNKS_SUPPORTED
-# endif
-# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
-# define PNG_READ_USER_CHUNKS_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_READ_USER_CHUNKS
-# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
-# define PNG_READ_USER_CHUNKS_SUPPORTED
-# endif
-# ifndef PNG_USER_CHUNKS_SUPPORTED
-# define PNG_USER_CHUNKS_SUPPORTED
-# endif
-#endif
-#ifndef PNG_NO_HANDLE_AS_UNKNOWN
-# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-# endif
-#endif
-
-#ifdef PNG_WRITE_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
-#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
-
-#ifdef PNG_WRITE_tIME_SUPPORTED
-# ifndef PNG_NO_CONVERT_tIME
-# ifndef _WIN32_WCE
-/* The "tm" structure is not supported on WindowsCE */
-# ifndef PNG_CONVERT_tIME_SUPPORTED
-# define PNG_CONVERT_tIME_SUPPORTED
-# endif
-# endif
-# endif
-#endif
-
-#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
-
-#ifndef PNG_NO_WRITE_FILTER
-# ifndef PNG_WRITE_FILTER_SUPPORTED
-# define PNG_WRITE_FILTER_SUPPORTED
+#ifndef PNG_IMPEXP
+# if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
+ /* This forces use of a DLL, disallowing static linking */
+# define PNG_IMPEXP PNG_DLL_IMPORT
# 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
-#endif
-#ifndef PNG_NO_HANDLE_AS_UNKNOWN
-# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+# ifndef PNG_IMPEXP
+# define PNG_IMPEXP
# endif
#endif
-#endif /* PNG_WRITE_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 converting tIME chunks */
-#ifdef PNG_CONVERT_tIME_SUPPORTED
- /* "time.h" functions are not supported on WindowsCE */
-# include <time.h>
-#endif
-
-/* Some typedefs to get us started. These should be safe on most of the
- * common platforms. The typedefs should be at least as large as the
- * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
- * don't have to be exactly that size. Some compilers dislike passing
- * unsigned shorts as function parameters, so you may be better off using
- * unsigned int for png_uint_16.
- */
-
-#if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL)
-typedef unsigned int png_uint_32;
-typedef int png_int_32;
-#else
-typedef unsigned long png_uint_32;
-typedef long png_int_32;
-#endif
-typedef unsigned short png_uint_16;
-typedef short png_int_16;
-typedef unsigned char png_byte;
-
-#ifdef PNG_NO_SIZE_T
- typedef unsigned int png_size_t;
-#else
- typedef size_t png_size_t;
-#endif
-#define png_sizeof(x) (sizeof (x))
-
-/* The following is needed for medium model support. It cannot be in the
- * pngpriv.h header. 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)
+/* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat
+ * 'attributes' as a storage class - the attributes go at the start of the
+ * function definition, and attributes are always appended regardless of the
+ * compiler. This considerably simplifies these macros but may cause problems
+ * if any compilers both need function attributes and fail to handle them as
+ * a storage class (this is unlikely.)
*/
-
-/* MSC Medium model */
-#ifdef FAR
-# ifdef 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
-typedef FILE * png_FILE_p;
+#ifndef PNG_FUNCTION
+# define PNG_FUNCTION(type, name, args, attributes) attributes type name args
#endif
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-typedef double FAR * png_doublep;
+#ifndef PNG_EXPORT_TYPE
+# define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
#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;
-
-/* 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.
- */
+ /* The ordinal value is only relevant when preprocessing png.h for symbol
+ * table entries, so we discard it here. See the .dfn files in the
+ * scripts directory.
+ */
+#ifndef PNG_EXPORTA
-#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
-# define PNG_DLL
+# define PNG_EXPORTA(ordinal, type, name, args, attributes)\
+ PNG_FUNCTION(PNG_EXPORT_TYPE(type),(PNGAPI name),PNGARG(args), \
+ extern attributes)
#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.
+/* ANSI-C (C90) does not permit a macro to be invoked with an empty argument,
+ * so make something non-empty to satisfy the requirement:
*/
+#define PNG_EMPTY /*empty list*/
-#ifdef __CYGWIN__
-# undef PNGAPI
-# define PNGAPI __cdecl
-# undef PNG_IMPEXP
-# define PNG_IMPEXP
-#endif
+#define PNG_EXPORT(ordinal, type, name, args)\
+ PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY)
-#ifdef __WATCOMC__
-# ifndef PNGAPI
-# define PNGAPI
-# endif
-#endif
-
-#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
-# ifndef PNG_NO_MODULEDEF
-# define PNG_NO_MODULEDEF
-# endif
+/* Use PNG_REMOVED to comment out a removed interface. */
+#ifndef PNG_REMOVED
+# define PNG_REMOVED(ordinal, type, name, args, attributes)
#endif
-#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
-# define PNG_IMPEXP
+#ifndef PNG_CALLBACK
+# define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args)
#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
-
-# ifndef 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
-# ifdef 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
-
-# ifndef PNG_IMPEXP
-# ifdef 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
-
-#ifdef PNG_BUILDSYMS
-# ifndef PNG_EXPORT
-# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
-# endif
-#endif
-
-#ifndef PNG_EXPORT
-# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
-#endif
-
-#define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
-
/* Support for compiler specific function attributes. These are used
* so that where compiler support is available incorrect use of API
* functions in png.h will generate compiler warnings.
#endif
#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
-/* Support for compiler specific function attributes. These are used
- * so that where compiler support is available incorrect use of API
- * functions in png.h will generate compiler warnings. Added at libpng
- * version 1.2.41.
- */
-# ifdef __GNUC__
+ /* Support for compiler specific function attributes. These are used
+ * so that where compiler support is available, incorrect use of API
+ * functions in png.h will generate compiler warnings. Added at libpng
+ * version 1.2.41. Disabling these removes the warnings but may also produce
+ * less efficient code.
+ */
+# if defined(__GNUC__)
# ifndef PNG_USE_RESULT
# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
# endif
# ifndef PNG_NORETURN
# define PNG_NORETURN __attribute__((__noreturn__))
# endif
+# if __GNUC__ >= 3
+# ifndef PNG_ALLOCATED
+# define PNG_ALLOCATED __attribute__((__malloc__))
+# endif
+# ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED __attribute__((__deprecated__))
+# endif
+# ifndef PNG_PRIVATE
+# if 0 /* Doesn't work so we use deprecated instead*/
+# define PNG_PRIVATE \
+ __attribute__((warning("This function is not exported by libpng.")))
+# else
+# define PNG_PRIVATE \
+ __attribute__((__deprecated__))
+# endif
+# endif
+# if ((__GNUC__ != 3) || !defined(__GNUC_MINOR__) || (__GNUC_MINOR__ >= 1))
+# ifndef PNG_RESTRICT
+# define PNG_RESTRICT __restrict
+# endif
+# endif /* __GNUC__ == 3.0 */
+# endif /* __GNUC__ >= 3 */
+
+# elif defined(_MSC_VER) && (_MSC_VER >= 1300)
+# ifndef PNG_USE_RESULT
+# define PNG_USE_RESULT /* not supported */
+# endif
+# ifndef PNG_NORETURN
+# define PNG_NORETURN __declspec(noreturn)
+# endif
# ifndef PNG_ALLOCATED
-# define PNG_ALLOCATED __attribute__((__malloc__))
+# if (_MSC_VER >= 1400)
+# define PNG_ALLOCATED __declspec(restrict)
+# endif
# endif
-
- /* This specifically protects structure members that should only be
- * accessed from within the library, therefore should be empty during
- * a library build.
- */
# ifndef PNG_DEPRECATED
-# define PNG_DEPRECATED __attribute__((__deprecated__))
-# endif
-# ifndef PNG_DEPSTRUCT
-# define PNG_DEPSTRUCT __attribute__((__deprecated__))
+# define PNG_DEPRECATED __declspec(deprecated)
# endif
# ifndef PNG_PRIVATE
-# if 0 /* Doesn't work so we use deprecated instead*/
-# define PNG_PRIVATE \
- __attribute__((warning("This function is not exported by libpng.")))
-# else
-# define PNG_PRIVATE \
- __attribute__((__deprecated__))
+# define PNG_PRIVATE __declspec(deprecated)
+# endif
+# ifndef PNG_RESTRICT
+# if (_MSC_VER >= 1400)
+# define PNG_RESTRICT __restrict
# endif
-# endif /* PNG_PRIVATE */
-# endif /* __GNUC__ */
+# endif
+
+# elif defined(__WATCOMC__)
+# ifndef PNG_RESTRICT
+# define PNG_RESTRICT __restrict
+# endif
+# endif /* _MSC_VER */
#endif /* PNG_PEDANTIC_WARNINGS */
#ifndef PNG_DEPRECATED
#ifndef PNG_ALLOCATED
# define PNG_ALLOCATED /* The result of the function is new memory */
#endif
-#ifndef PNG_DEPSTRUCT
-# define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
-#endif
#ifndef PNG_PRIVATE
# define PNG_PRIVATE /* This is a private libpng function */
#endif
+#ifndef PNG_RESTRICT
+# define PNG_RESTRICT /* The C99 "restrict" feature */
+#endif
+#ifndef PNG_FP_EXPORT /* A floating point API. */
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+# define PNG_FP_EXPORT(ordinal, type, name, args)\
+ PNG_EXPORT(ordinal, type, name, args);
+# else /* No floating point APIs */
+# define PNG_FP_EXPORT(ordinal, type, name, args)
+# endif
+#endif
+#ifndef PNG_FIXED_EXPORT /* A fixed point API. */
+# ifdef PNG_FIXED_POINT_SUPPORTED
+# define PNG_FIXED_EXPORT(ordinal, type, name, args)\
+ PNG_EXPORT(ordinal, type, name, args);
+# else /* No fixed point APIs */
+# define PNG_FIXED_EXPORT(ordinal, type, name, args)
+# endif
+#endif
-/* Users may want to use these so they are not private. Any library
- * functions that are passed far data must be model-independent.
+#ifndef PNG_BUILDING_SYMBOL_TABLE
+/* Some typedefs to get us started. These should be safe on most of the common
+ * platforms.
+ *
+ * png_uint_32 and png_int_32 may, currently, be larger than required to hold a
+ * 32-bit value however this is not normally advisable.
+ *
+ * png_uint_16 and png_int_16 should always be two bytes in size - this is
+ * verified at library build time.
+ *
+ * png_byte must always be one byte in size.
+ *
+ * The checks below use constants from limits.h, as defined by the ISOC90
+ * standard.
*/
+#if CHAR_BIT == 8 && UCHAR_MAX == 255
+ typedef unsigned char png_byte;
+#else
+# error "libpng requires 8 bit bytes"
+#endif
-/* memory model/platform independent fns */
-#ifndef PNG_ABORT
-# if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_))
-# define PNG_ABORT() ExitProcess(0)
-# else
-# define PNG_ABORT() abort()
-# endif
+#if INT_MIN == -32768 && INT_MAX == 32767
+ typedef int png_int_16;
+#elif SHRT_MIN == -32768 && SHRT_MAX == 32767
+ typedef short png_int_16;
+#else
+# error "libpng requires a signed 16 bit type"
#endif
-#ifdef USE_FAR_KEYWORD
-/* 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
-# define png_sprintf sprintf
+#if UINT_MAX == 65535
+ typedef unsigned int png_uint_16;
+#elif USHRT_MAX == 65535
+ typedef unsigned short png_uint_16;
#else
-# if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_))
-# /* Favor Windows over C runtime fns */
-# define CVT_PTR(ptr) (ptr)
-# define CVT_PTR_NOCHECK(ptr) (ptr)
-# define png_strcpy lstrcpyA
-# define png_strncpy lstrcpynA
-# define png_strlen lstrlenA
-# define png_memcmp memcmp
-# define png_memcpy CopyMemory
-# define png_memset memset
-# define png_sprintf wsprintfA
-# else
-# 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
-# define png_sprintf sprintf
-# endif
+# error "libpng requires an unsigned 16 bit type"
#endif
-#ifndef PNG_NO_SNPRINTF
-# ifdef _MSC_VER
-# define png_snprintf _snprintf /* Added to v 1.2.19 */
-# define png_snprintf2 _snprintf
-# define png_snprintf6 _snprintf
-# else
-# define png_snprintf snprintf /* Added to v 1.2.19 */
-# define png_snprintf2 snprintf
-# define png_snprintf6 snprintf
-# endif
+#if INT_MIN < -2147483646 && INT_MAX > 2147483646
+ typedef int png_int_32;
+#elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646
+ typedef long int png_int_32;
+#else
+# error "libpng requires a signed 32 bit (or more) type"
+#endif
+
+#if UINT_MAX > 4294967294
+ typedef unsigned int png_uint_32;
+#elif ULONG_MAX > 4294967294
+ typedef unsigned long int png_uint_32;
#else
- /* You don't have or don't want to use snprintf(). Caution: Using
- * sprintf instead of snprintf exposes your application to accidental
- * or malevolent buffer overflows. If you don't have snprintf()
- * as a general rule you should provide one (you can get one from
- * Portable OpenSSH).
+# error "libpng requires an unsigned 32 bit (or more) type"
+#endif
+
+/* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however,
+ * requires an ISOC90 compiler and relies on consistent behavior of sizeof.
+ */
+typedef size_t png_size_t;
+typedef ptrdiff_t png_ptrdiff_t;
+
+/* libpng needs to know the maximum value of 'size_t' and this controls the
+ * definition of png_alloc_size_t, below. This maximum value of size_t limits
+ * but does not control the maximum allocations the library makes - there is
+ * direct application control of this through png_set_user_limits().
+ */
+#ifndef PNG_SMALL_SIZE_T
+ /* Compiler specific tests for systems where size_t is known to be less than
+ * 32 bits (some of these systems may no longer work because of the lack of
+ * 'far' support; see above.)
*/
-# define png_snprintf(s1,n,fmt,x1) png_sprintf(s1,fmt,x1)
-# define png_snprintf2(s1,n,fmt,x1,x2) png_sprintf(s1,fmt,x1,x2)
-# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
- png_sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
+# if (defined(__TURBOC__) && !defined(__FLAT__)) ||\
+ (defined(_MSC_VER) && defined(MAXSEG_64K))
+# define PNG_SMALL_SIZE_T
+# endif
#endif
-/* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
- * and no smaller than png_uint_32. Casts from png_size_t or png_uint_32
- * to png_alloc_size_t are not necessary; in fact, it is recommended
- * not to use them at all so that the compiler can complain when something
- * turns out to be problematic.
+/* png_alloc_size_t is guaranteed to be no smaller than png_size_t, and no
+ * smaller than png_uint_32. Casts from png_size_t or png_uint_32 to
+ * png_alloc_size_t are not necessary; in fact, it is recommended not to use
+ * them at all so that the compiler can complain when something turns out to be
+ * problematic.
+ *
* Casts in the other direction (from png_alloc_size_t to png_size_t or
- * png_uint_32) should be explicitly applied; however, we do not expect
- * to encounter practical situations that require such conversions.
+ * png_uint_32) should be explicitly applied; however, we do not expect to
+ * encounter practical situations that require such conversions.
+ *
+ * PNG_SMALL_SIZE_T must be defined if the maximum value of size_t is less than
+ * 4294967295 - i.e. less than the maximum value of png_uint_32.
*/
-#if defined(__TURBOC__) && !defined(__FLAT__)
- typedef unsigned long png_alloc_size_t;
+#ifdef PNG_SMALL_SIZE_T
+ typedef png_uint_32 png_alloc_size_t;
#else
-# if defined(_MSC_VER) && defined(MAXSEG_64K)
- typedef unsigned long png_alloc_size_t;
-# else
- /* This is an attempt to detect an old Windows system where (int) is
- * actually 16 bits, in that case png_malloc must have an argument with a
- * bigger size to accomodate the requirements of the library.
- */
-# if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_)) && \
- (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
- typedef DWORD png_alloc_size_t;
-# else
- typedef png_size_t png_alloc_size_t;
-# endif
-# endif
+ typedef png_size_t png_alloc_size_t;
#endif
-/* End of memory model/platform independent support */
-/* Just a little check that someone hasn't tried to define something
- * contradictory.
+/* Prior to 1.6.0 libpng offered limited support for Microsoft C compiler
+ * implementations of Intel CPU specific support of user-mode segmented address
+ * spaces, where 16-bit pointers address more than 65536 bytes of memory using
+ * separate 'segment' registers. The implementation requires two different
+ * types of pointer (only one of which includes the segment value.)
+ *
+ * If required this support is available in version 1.2 of libpng and may be
+ * available in versions through 1.5, although the correctness of the code has
+ * not been verified recently.
+ */
+
+/* Typedef for floating-point numbers that are converted to fixed-point with a
+ * multiple of 100,000, e.g., gamma
*/
-#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
-# undef PNG_ZBUF_SIZE
-# define PNG_ZBUF_SIZE 65536L
+typedef png_int_32 png_fixed_point;
+
+/* Add typedefs for pointers */
+typedef void * png_voidp;
+typedef const void * png_const_voidp;
+typedef png_byte * png_bytep;
+typedef const png_byte * png_const_bytep;
+typedef png_uint_32 * png_uint_32p;
+typedef const png_uint_32 * png_const_uint_32p;
+typedef png_int_32 * png_int_32p;
+typedef const png_int_32 * png_const_int_32p;
+typedef png_uint_16 * png_uint_16p;
+typedef const png_uint_16 * png_const_uint_16p;
+typedef png_int_16 * png_int_16p;
+typedef const png_int_16 * png_const_int_16p;
+typedef char * png_charp;
+typedef const char * png_const_charp;
+typedef png_fixed_point * png_fixed_point_p;
+typedef const png_fixed_point * png_const_fixed_point_p;
+typedef png_size_t * png_size_tp;
+typedef const png_size_t * png_const_size_tp;
+
+#ifdef PNG_STDIO_SUPPORTED
+typedef FILE * png_FILE_p;
#endif
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+typedef double * png_doublep;
+typedef const double * png_const_doublep;
+#endif
+
+/* Pointers to pointers; i.e. arrays */
+typedef png_byte * * png_bytepp;
+typedef png_uint_32 * * png_uint_32pp;
+typedef png_int_32 * * png_int_32pp;
+typedef png_uint_16 * * png_uint_16pp;
+typedef png_int_16 * * png_int_16pp;
+typedef const char * * png_const_charpp;
+typedef char * * png_charpp;
+typedef png_fixed_point * * png_fixed_point_pp;
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+typedef double * * png_doublepp;
+#endif
+
+/* Pointers to pointers to pointers; i.e., pointer to array */
+typedef char * * * png_charppp;
-/* Added at libpng-1.2.8 */
-#endif /* PNG_VERSION_INFO_ONLY */
+#endif /* PNG_BUILDING_SYMBOL_TABLE */
#endif /* PNGCONF_H */
projects / wxWidgets.git / blobdiff