| |
| /* pngconf.h - machine configurable file for libpng |
| * |
| * libpng version 1.5.0beta17 - April 17, 2010 |
| * |
| * Copyright (c) 1998-2010 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.) |
| * |
| * This code is released under the libpng license. |
| * For conditions of distribution and use, see the disclaimer |
| * and license in png.h |
| * |
| */ |
| |
| /* Any machine specific code is near the front of this file, so if you |
| * are configuring libpng for a machine, you may want to read the section |
| * starting here down to where it starts to typedef png_color, png_text, |
| * and png_info. |
| */ |
| |
| #ifndef PNGCONF_H |
| #define PNGCONF_H |
| |
| #ifndef PNG_NO_LIMITS_H |
| # include <limits.h> |
| #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 |
| # ifndef PNG_USER_PRIVATEBUILD |
| # define PNG_USER_PRIVATEBUILD |
| # endif |
| # include "pngusr.h" |
| #endif |
| |
| /* |
| * If you create a private DLL you need to define in "pngusr.h" the followings: |
| * #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 "libpng13gx.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.") |
| # endif |
| |
| # ifdef PRIVATEBUILD |
| # pragma message("PRIVATEBUILD is deprecated.\ |
| Use PNG_USER_PRIVATEBUILD instead.") |
| # define PNG_USER_PRIVATEBUILD PRIVATEBUILD |
| # 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 |
| |
| /* Added at libpng version 1.4.0 */ |
| #if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED) |
| # define PNG_WARNINGS_SUPPORTED |
| #endif |
| |
| /* Added at libpng version 1.4.0 */ |
| #if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED) |
| # define PNG_ERROR_TEXT_SUPPORTED |
| #endif |
| |
| /* Added at libpng version 1.4.0 */ |
| #if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED) |
| # define PNG_CHECK_cHRM_SUPPORTED |
| #endif |
| |
| /* Added at libpng version 1.4.0 */ |
| #if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED) |
| # define PNG_ALIGNED_MEMORY_SUPPORTED |
| #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 |
| #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 |
| |
| /* Added at libpng-1.4.0beta49 for testing (this test is no longer used |
| * in libpng and png_calloc() is always present) |
| */ |
| #define PNG_CALLOC_SUPPORTED |
| |
| /* If you are running on a machine where you cannot allocate more |
| * than 64K of memory at once, uncomment this. While libpng will not |
| * normally need that much memory in a chunk (unless you load up a very |
| * large file), zlib needs to know how big of a chunk it can use, and |
| * libpng thus makes sure to check any memory allocation to verify it |
| * will fit into memory. |
| #define PNG_MAX_MALLOC_64K |
| */ |
| #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) |
| # define PNG_MAX_MALLOC_64K |
| #endif |
| |
| /* This macro protects us against machines that don't have function |
| * prototypes (ie K&R style headers). If your compiler does not handle |
| * function prototypes, define this macro and use the included ansi2knr. |
| * I've always been able to use _NO_PROTO as the indicator, but you may |
| * need to drag the empty declaration out in front of here, or change the |
| * ifdef to suit your own needs. |
| */ |
| #ifndef PNGARG |
| |
| # ifdef OF /* zlib prototype munger */ |
| # define PNGARG(arglist) OF(arglist) |
| # else |
| |
| # ifdef _NO_PROTO |
| # define PNGARG(arglist) () |
| # else |
| # define PNGARG(arglist) arglist |
| # endif /* _NO_PROTO */ |
| |
| # endif /* OF */ |
| |
| #endif /* PNGARG */ |
| |
| /* 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 allows the calling convention of every exported function and |
| * every function called via a user supplied function pointer to be |
| * specified. This is done by defining the following macros: |
| * |
| * 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). |
| * |
| * |
| * Two common cases are supported: |
| * |
| * PNGAPI_RULE=0 Use the operating system convention for PNGAPI and |
| * the 'C' calling convention (from PNGCAPI) for |
| * callbacks (PNGCBAPI). |
| * PNGAPI_RULE=1 Use PNGCAPI - the 'C' calling convention - throughout. |
| * This is correct on Cygwin implementations, assumed to |
| * be correct on MingW compilations and likely to work |
| * in C/C++ only environments everywhere else. |
| * |
| * 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. |
| */ |
| #ifndef PNGAPI_RULE |
| # define PNGAPI_RULE 0 |
| #endif |
| |
| /* 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. |
| * |
| * 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. |
| * |
| * NOTE: this is poorly tested and may miss many cases, the default |
| * (everything empty) is harmless unless the result is a DLL that is |
| * intended to be distributed! |
| */ |
| #if defined(__CYGWIN__) |
| /* Cygwin: force PNGCAPI to cdecl. */ |
| # ifndef PNGCAPI |
| # define PNGCAPI __cdecl |
| # endif |
| |
| /* Provide the appropriate defaults for exporting a symbol from |
| * the DLL and forcing import. Always set these - the choice to |
| * use them is made below. |
| */ |
| # ifndef PNG_DLL_EXPORT |
| # define PNG_DLL_EXPORT __declspec(dllexport) |
| # endif |
| # ifndef PNG_DLL_IMPORT |
| # define PNG_DLL_IMPORT __declspec(dllimport) |
| # endif |
| |
| #else /* !Cygwin */ |
| # if ( defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\ |
| defined(_WIN32) || defined(__WIN32__) ) &&\ |
| ( defined(_X86_) || defined(_X64_) || defined(_M_IX86) ||\ |
| defined(_M_X64) || defined(_M_IA64) ) |
| /* Windows system (DOS doesn't support DLLs) running on x86/x64 and |
| * not being built under Cygwin or by a MingW compiler. |
| */ |
| # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) |
| # ifndef PNGCAPI |
| # define PNGCAPI __cdecl |
| # endif |
| # if PNGAPI_RULE == 0 && !defined(PNGAPI) |
| # define PNGAPI __stdcall |
| # endif |
| # else |
| /* An older compiler, or one not detected (erroneously) above. */ |
| # ifndef PNGCAPI |
| # define PNGCAPI _cdecl |
| # endif |
| # if PNGAPI_RULE == 0 && !defined(PNGAPI) |
| # define PNGAPI _stdcall |
| # endif |
| # endif /* compiler/api */ |
| /* NOTE: PNGCBAPI always defaults to PNGCAPI. */ |
| |
| # 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 /* !Cygwin && !Windows/x86 */ |
| # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) |
| # ifndef PNGAPI |
| # define PNGAPI _System |
| # endif |
| # else /* !Cygwin && !Windows/x86 && !OS/2 */ |
| /* Use the defaults */ |
| # endif /* other system, !OS/2 */ |
| # endif /* !Windows/x86 */ |
| #endif /* !Cygwin */ |
| |
| /* Now do all the defaulting . */ |
| #ifndef PNGCAPI |
| # define PNGCAPI |
| #endif |
| #ifndef PNGCBAPI |
| # define PNGCBAPI PNGCAPI |
| #endif |
| #ifndef PNGAPI |
| # define PNGAPI PNGCAPI |
| #endif |
| |
| /* The default for PNG_IMPEXP depends on whether the library is |
| * being built or used. |
| */ |
| #ifndef PNG_IMPEXP |
| # ifdef PNGLIB_BUILD |
| /* Building the library */ |
| # if (defined(DLL_EXPORT)/*from libtool*/ ||\ |
| defined(_WINDLL) || defined(_DLL) || defined(__DLL__) ||\ |
| defined(PNG_BUILD_DLL)) && defined(PNG_DLL_EXPORT) |
| /* Building a DLL. */ |
| # define PNG_IMPEXP PNG_DLL_EXPORT |
| # endif /* DLL */ |
| # else |
| /* Using the library */ |
| # 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_IMPEXP |
| # define PNG_IMPEXP |
| # endif |
| #endif |
| |
| #ifndef PNG_EXPORT_TYPE |
| # define PNG_EXPORT_TYPE(type) PNG_IMPEXP type |
| #endif |
| #ifndef PNG_EXPORT |
| # define PNG_EXPORT(type, name, args, attributes, ordinal)\ |
| PNG_EXPORT_TYPE(type) (PNGAPI name) PNGARG(args) attributes |
| #endif |
| |
| /* Use PNG_REMOVED to comment out a removed interface. */ |
| #ifndef PNG_REMOVED |
| # define PNG_REMOVED(name, ordinal) |
| #endif |
| |
| #ifndef PNG_CALLBACK |
| # define PNG_CALLBACK(type, name, args, attributes)\ |
| type (PNGCBAPI name) PNGARG(args) attributes |
| #endif |
| |
| /* 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-1.2.41. |
| */ |
| |
| #ifndef PNG_NO_PEDANTIC_WARNINGS |
| # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED |
| # define PNG_PEDANTIC_WARNINGS_SUPPORTED |
| # endif |
| #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__ |
| # ifndef PNG_USE_RESULT |
| # define PNG_USE_RESULT __attribute__((__warn_unused_result__)) |
| # endif |
| # ifndef PNG_NORETURN |
| # define PNG_NORETURN __attribute__((__noreturn__)) |
| # endif |
| # ifndef PNG_ALLOCATED |
| # define PNG_ALLOCATED __attribute__((__malloc__)) |
| # endif |
| |
| /* This specifically protects structure members that should only be |
| * accessed from within the library, therefore should be empty during |
| * a library build. |
| */ |
| # ifndef PNGLIB_BUILD |
| # ifndef PNG_DEPRECATED |
| # define PNG_DEPRECATED __attribute__((__deprecated__)) |
| # endif |
| # ifndef PNG_DEPSTRUCT |
| # define PNG_DEPSTRUCT __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 /* PNG_PRIVATE */ |
| # endif /* PNGLIB_BUILD */ |
| # endif /* __GNUC__ */ |
| #endif /* PNG_PEDANTIC_WARNINGS */ |
| |
| #ifndef PNG_DEPRECATED |
| # define PNG_DEPRECATED /* Use of this function is deprecated */ |
| #endif |
| #ifndef PNG_USE_RESULT |
| # define PNG_USE_RESULT /* The result of this function must be checked */ |
| #endif |
| #ifndef PNG_NORETURN |
| # define PNG_NORETURN /* This function does not return */ |
| #endif |
| #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 |
| |
| /* This protects us against compilers that run on a windowing system |
| * and thus don't have or would rather us not use the stdio types: |
| * stdin, stdout, and stderr. The only one currently used is stderr |
| * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will |
| * prevent these from being compiled and used. #defining PNG_NO_STDIO |
| * will also prevent these, plus will prevent the entire set of stdio |
| * macros and functions (FILE *, printf, etc.) from being compiled and used, |
| * unless (PNG_DEBUG > 0) has been #defined. |
| * |
| * #define PNG_NO_CONSOLE_IO |
| * #define PNG_NO_STDIO |
| */ |
| |
| #if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED) |
| # define PNG_STDIO_SUPPORTED |
| #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 |
| |
| /* 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 |
| # include <setjmp.h> |
| #endif |
| |
| #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. |
| */ |
| #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 here. |
| */ |
| #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 and #undef, and that part of the library will not be compiled. If |
| * your linker can't find a function, you may want to make sure the |
| * ability is defined here. Some of these depend upon some others being |
| * defined. I haven't figured out all the interactions here, so you may |
| * have to experiment awhile to get everything to compile. If you are |
| * creating or using a shared library, you probably shouldn't touch this, |
| * as it will affect the size of the structures, and this will cause bad |
| * things to happen if the library and/or application ever change. |
| */ |
| |
| /* Any 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 |
| # define PNG_READ_QUANTIZE_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 */ |
| |
| # ifndef PNG_NO_PROGRESSIVE_READ |
| # define PNG_PROGRESSIVE_READ_SUPPORTED |
| # endif |
| /* You can define PNG_NO_PROGRESSIVE_READ if you don't do progressive reading. |
| * This is not talking about interlacing capability! You'll still have |
| * interlacing unless you change the following define which is required |
| * for PNG-compliant decoders: |
| */ |
| |
| # define PNG_READ_INTERLACING_SUPPORTED |
| |
| /* 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 */ |
| /* well tested on Intel, SGI */ |
| # define PNG_READ_COMPOSITE_NODIV_SUPPORTED |
| # 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 |
| |
| /* Added at libpng-1.2.43 */ |
| #ifndef PNG_NO_USER_LIMITS |
| # ifndef PNG_USER_LIMITS_SUPPORTED |
| # define PNG_USER_LIMITS_SUPPORTED |
| # 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, not enabled by default. */ |
| /* |
| #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, not enabled by default. */ |
| /* |
| #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED |
| # define PNG_READ_BIG_ENDIAN_SUPPORTED |
| #endif |
| */ |
| |
| #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS) |
| # define PNG_USE_READ_MACROS |
| #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 |
| #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. |
| */ |
| |
| /* 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 |
| /* This only affects support of the optional PLTE chunk in RGB and RGBA |
| * images. |
| */ |
| # define PNG_READ_OPT_PLTE_SUPPORTED |
| # endif |
| # 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 |
| /* The "tm" structure is not supported on WindowsCE */ |
| # ifndef _WIN32_WCE |
| # 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 |
| # 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 |
| # 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) |
| */ |
| |
| /* 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; |
| #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; |
| |
| #define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */ |
| |
| /* Users may want to use these so they are not private. Any library |
| * functions that are passed far data must be model-independent. |
| */ |
| |
| /* Memory model/platform independent fns */ |
| #ifndef PNG_ABORT |
| # ifdef _WINDOWS_ |
| # define PNG_ABORT() ExitProcess(0) |
| # else |
| # define PNG_ABORT() abort() |
| # endif |
| #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 |
| #else |
| # ifdef _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 |
| # 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 |
| # 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). |
| */ |
| # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1) |
| # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2) |
| # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \ |
| sprintf(s1,fmt,x1,x2,x3,x4,x5,x6) |
| # endif |
| # 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. |
| * 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. |
| */ |
| #if defined(__TURBOC__) && !defined(__FLAT__) |
| # define png_mem_alloc farmalloc |
| # define png_mem_free farfree |
| typedef unsigned long png_alloc_size_t; |
| #else |
| # if defined(_MSC_VER) && defined(MAXSEG_64K) |
| # define png_mem_alloc(s) halloc(s, 1) |
| # define png_mem_free hfree |
| typedef unsigned long png_alloc_size_t; |
| # else |
| # if defined(_WINDOWS_) && (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL) |
| # define png_mem_alloc(s) HeapAlloc(GetProcessHeap(), 0, s) |
| # define png_mem_free(p) HeapFree(GetProcessHeap(), 0, p) |
| typedef DWORD png_alloc_size_t; |
| # else |
| # define png_mem_alloc malloc |
| # define png_mem_free free |
| typedef png_size_t png_alloc_size_t; |
| # endif |
| # endif |
| #endif |
| /* End of memory model/platform 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 |
| |
| |
| /* Added at libpng-1.2.8 */ |
| #endif /* PNG_VERSION_INFO_ONLY */ |
| |
| #endif /* PNGCONF_H */ |
