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00001 00002 /* pngconf.h - machine configurable file for libpng 00003 * 00004 * libpng version 1.2.12 - June 27, 2006 00005 * For conditions of distribution and use, see copyright notice in png.h 00006 * Copyright (c) 1998-2005 Glenn Randers-Pehrson 00007 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) 00008 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) 00009 */ 00010 00011 /* Any machine specific code is near the front of this file, so if you 00012 * are configuring libpng for a machine, you may want to read the section 00013 * starting here down to where it starts to typedef png_color, png_text, 00014 * and png_info. 00015 */ 00016 00017 #ifndef PNGCONF_H 00018 #define PNGCONF_H 00019 00020 #define PNG_1_2_X 00021 00022 /* 00023 * PNG_USER_CONFIG has to be defined on the compiler command line. This 00024 * includes the resource compiler for Windows DLL configurations. 00025 */ 00026 #ifdef PNG_USER_CONFIG 00027 # ifndef PNG_USER_PRIVATEBUILD 00028 # define PNG_USER_PRIVATEBUILD 00029 # endif 00030 #include "pngusr.h" 00031 #endif 00032 00033 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */ 00034 #ifdef PNG_CONFIGURE_LIBPNG 00035 #ifdef HAVE_CONFIG_H 00036 #include "config.h" 00037 #endif 00038 #endif 00039 00040 /* 00041 * Added at libpng-1.2.8 00042 * 00043 * If you create a private DLL you need to define in "pngusr.h" the followings: 00044 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of 00045 * the DLL was built> 00046 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons." 00047 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to 00048 * distinguish your DLL from those of the official release. These 00049 * correspond to the trailing letters that come after the version 00050 * number and must match your private DLL name> 00051 * e.g. // private DLL "libpng13gx.dll" 00052 * #define PNG_USER_DLLFNAME_POSTFIX "gx" 00053 * 00054 * The following macros are also at your disposal if you want to complete the 00055 * DLL VERSIONINFO structure. 00056 * - PNG_USER_VERSIONINFO_COMMENTS 00057 * - PNG_USER_VERSIONINFO_COMPANYNAME 00058 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS 00059 */ 00060 00061 #ifdef __STDC__ 00062 #ifdef SPECIALBUILD 00063 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\ 00064 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.") 00065 #endif 00066 00067 #ifdef PRIVATEBUILD 00068 # pragma message("PRIVATEBUILD is deprecated.\ 00069 Use PNG_USER_PRIVATEBUILD instead.") 00070 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD 00071 #endif 00072 #endif /* __STDC__ */ 00073 00074 #ifndef PNG_VERSION_INFO_ONLY 00075 00076 /* End of material added to libpng-1.2.8 */ 00077 00078 /* This is the size of the compression buffer, and thus the size of 00079 * an IDAT chunk. Make this whatever size you feel is best for your 00080 * machine. One of these will be allocated per png_struct. When this 00081 * is full, it writes the data to the disk, and does some other 00082 * calculations. Making this an extremely small size will slow 00083 * the library down, but you may want to experiment to determine 00084 * where it becomes significant, if you are concerned with memory 00085 * usage. Note that zlib allocates at least 32Kb also. For readers, 00086 * this describes the size of the buffer available to read the data in. 00087 * Unless this gets smaller than the size of a row (compressed), 00088 * it should not make much difference how big this is. 00089 */ 00090 00091 #ifndef PNG_ZBUF_SIZE 00092 # define PNG_ZBUF_SIZE 8192 00093 #endif 00094 00095 /* Enable if you want a write-only libpng */ 00096 00097 #ifndef PNG_NO_READ_SUPPORTED 00098 # define PNG_READ_SUPPORTED 00099 #endif 00100 00101 /* Enable if you want a read-only libpng */ 00102 00103 #ifndef PNG_NO_WRITE_SUPPORTED 00104 # define PNG_WRITE_SUPPORTED 00105 #endif 00106 00107 /* Enabled by default in 1.2.0. You can disable this if you don't need to 00108 support PNGs that are embedded in MNG datastreams */ 00109 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES) 00110 # ifndef PNG_MNG_FEATURES_SUPPORTED 00111 # define PNG_MNG_FEATURES_SUPPORTED 00112 # endif 00113 #endif 00114 00115 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED 00116 # ifndef PNG_FLOATING_POINT_SUPPORTED 00117 # define PNG_FLOATING_POINT_SUPPORTED 00118 # endif 00119 #endif 00120 00121 /* If you are running on a machine where you cannot allocate more 00122 * than 64K of memory at once, uncomment this. While libpng will not 00123 * normally need that much memory in a chunk (unless you load up a very 00124 * large file), zlib needs to know how big of a chunk it can use, and 00125 * libpng thus makes sure to check any memory allocation to verify it 00126 * will fit into memory. 00127 #define PNG_MAX_MALLOC_64K 00128 */ 00129 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) 00130 # define PNG_MAX_MALLOC_64K 00131 #endif 00132 00133 /* Special munging to support doing things the 'cygwin' way: 00134 * 'Normal' png-on-win32 defines/defaults: 00135 * PNG_BUILD_DLL -- building dll 00136 * PNG_USE_DLL -- building an application, linking to dll 00137 * (no define) -- building static library, or building an 00138 * application and linking to the static lib 00139 * 'Cygwin' defines/defaults: 00140 * PNG_BUILD_DLL -- (ignored) building the dll 00141 * (no define) -- (ignored) building an application, linking to the dll 00142 * PNG_STATIC -- (ignored) building the static lib, or building an 00143 * application that links to the static lib. 00144 * ALL_STATIC -- (ignored) building various static libs, or building an 00145 * application that links to the static libs. 00146 * Thus, 00147 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and 00148 * this bit of #ifdefs will define the 'correct' config variables based on 00149 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but 00150 * unnecessary. 00151 * 00152 * Also, the precedence order is: 00153 * ALL_STATIC (since we can't #undef something outside our namespace) 00154 * PNG_BUILD_DLL 00155 * PNG_STATIC 00156 * (nothing) == PNG_USE_DLL 00157 * 00158 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent 00159 * of auto-import in binutils, we no longer need to worry about 00160 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, 00161 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes 00162 * to __declspec() stuff. However, we DO need to worry about 00163 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults 00164 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. 00165 */ 00166 #if defined(__CYGWIN__) 00167 # if defined(ALL_STATIC) 00168 # if defined(PNG_BUILD_DLL) 00169 # undef PNG_BUILD_DLL 00170 # endif 00171 # if defined(PNG_USE_DLL) 00172 # undef PNG_USE_DLL 00173 # endif 00174 # if defined(PNG_DLL) 00175 # undef PNG_DLL 00176 # endif 00177 # if !defined(PNG_STATIC) 00178 # define PNG_STATIC 00179 # endif 00180 # else 00181 # if defined (PNG_BUILD_DLL) 00182 # if defined(PNG_STATIC) 00183 # undef PNG_STATIC 00184 # endif 00185 # if defined(PNG_USE_DLL) 00186 # undef PNG_USE_DLL 00187 # endif 00188 # if !defined(PNG_DLL) 00189 # define PNG_DLL 00190 # endif 00191 # else 00192 # if defined(PNG_STATIC) 00193 # if defined(PNG_USE_DLL) 00194 # undef PNG_USE_DLL 00195 # endif 00196 # if defined(PNG_DLL) 00197 # undef PNG_DLL 00198 # endif 00199 # else 00200 # if !defined(PNG_USE_DLL) 00201 # define PNG_USE_DLL 00202 # endif 00203 # if !defined(PNG_DLL) 00204 # define PNG_DLL 00205 # endif 00206 # endif 00207 # endif 00208 # endif 00209 #endif 00210 00211 /* This protects us against compilers that run on a windowing system 00212 * and thus don't have or would rather us not use the stdio types: 00213 * stdin, stdout, and stderr. The only one currently used is stderr 00214 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will 00215 * prevent these from being compiled and used. #defining PNG_NO_STDIO 00216 * will also prevent these, plus will prevent the entire set of stdio 00217 * macros and functions (FILE *, printf, etc.) from being compiled and used, 00218 * unless (PNG_DEBUG > 0) has been #defined. 00219 * 00220 * #define PNG_NO_CONSOLE_IO 00221 * #define PNG_NO_STDIO 00222 */ 00223 00224 #if defined(_WIN32_WCE) 00225 # include <windows.h> 00226 /* Console I/O functions are not supported on WindowsCE */ 00227 # define PNG_NO_CONSOLE_IO 00228 # ifdef PNG_DEBUG 00229 # undef PNG_DEBUG 00230 # endif 00231 #endif 00232 00233 #ifdef PNG_BUILD_DLL 00234 # ifndef PNG_CONSOLE_IO_SUPPORTED 00235 # ifndef PNG_NO_CONSOLE_IO 00236 # define PNG_NO_CONSOLE_IO 00237 # endif 00238 # endif 00239 #endif 00240 00241 # ifdef PNG_NO_STDIO 00242 # ifndef PNG_NO_CONSOLE_IO 00243 # define PNG_NO_CONSOLE_IO 00244 # endif 00245 # ifdef PNG_DEBUG 00246 # if (PNG_DEBUG > 0) 00247 # include <stdio.h> 00248 # endif 00249 # endif 00250 # else 00251 # if !defined(_WIN32_WCE) 00252 /* "stdio.h" functions are not supported on WindowsCE */ 00253 # include <stdio.h> 00254 # endif 00255 # endif 00256 00257 /* This macro protects us against machines that don't have function 00258 * prototypes (ie K&R style headers). If your compiler does not handle 00259 * function prototypes, define this macro and use the included ansi2knr. 00260 * I've always been able to use _NO_PROTO as the indicator, but you may 00261 * need to drag the empty declaration out in front of here, or change the 00262 * ifdef to suit your own needs. 00263 */ 00264 #ifndef PNGARG 00265 00266 #ifdef OF /* zlib prototype munger */ 00267 # define PNGARG(arglist) OF(arglist) 00268 #else 00269 00270 #ifdef _NO_PROTO 00271 # define PNGARG(arglist) () 00272 # ifndef PNG_TYPECAST_NULL 00273 # define PNG_TYPECAST_NULL 00274 # endif 00275 #else 00276 # define PNGARG(arglist) arglist 00277 #endif /* _NO_PROTO */ 00278 00279 #endif /* OF */ 00280 00281 #endif /* PNGARG */ 00282 00283 /* Try to determine if we are compiling on a Mac. Note that testing for 00284 * just __MWERKS__ is not good enough, because the Codewarrior is now used 00285 * on non-Mac platforms. 00286 */ 00287 #ifndef MACOS 00288 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ 00289 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) 00290 # define MACOS 00291 # endif 00292 #endif 00293 00294 /* enough people need this for various reasons to include it here */ 00295 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) 00296 # include <sys/types.h> 00297 #endif 00298 00299 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) 00300 # define PNG_SETJMP_SUPPORTED 00301 #endif 00302 00303 #ifdef PNG_SETJMP_SUPPORTED 00304 /* This is an attempt to force a single setjmp behaviour on Linux. If 00305 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. 00306 */ 00307 00308 # ifdef __linux__ 00309 # ifdef _BSD_SOURCE 00310 # define PNG_SAVE_BSD_SOURCE 00311 # undef _BSD_SOURCE 00312 # endif 00313 # ifdef _SETJMP_H 00314 /* If you encounter a compiler error here, see the explanation 00315 * near the end of INSTALL. 00316 */ 00317 __png.h__ already includes setjmp.h; 00318 __dont__ include it again.; 00319 # endif 00320 # endif /* __linux__ */ 00321 00322 /* include setjmp.h for error handling */ 00323 # include <setjmp.h> 00324 00325 # ifdef __linux__ 00326 # ifdef PNG_SAVE_BSD_SOURCE 00327 # define _BSD_SOURCE 00328 # undef PNG_SAVE_BSD_SOURCE 00329 # endif 00330 # endif /* __linux__ */ 00331 #endif /* PNG_SETJMP_SUPPORTED */ 00332 00333 #ifdef BSD 00334 # include <strings.h> 00335 #else 00336 # include <string.h> 00337 #endif 00338 00339 /* Other defines for things like memory and the like can go here. */ 00340 #ifdef PNG_INTERNAL 00341 00342 #include <stdlib.h> 00343 00344 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which 00345 * aren't usually used outside the library (as far as I know), so it is 00346 * debatable if they should be exported at all. In the future, when it is 00347 * possible to have run-time registry of chunk-handling functions, some of 00348 * these will be made available again. 00349 #define PNG_EXTERN extern 00350 */ 00351 #define PNG_EXTERN 00352 00353 /* Other defines specific to compilers can go here. Try to keep 00354 * them inside an appropriate ifdef/endif pair for portability. 00355 */ 00356 00357 #if defined(PNG_FLOATING_POINT_SUPPORTED) 00358 # if defined(MACOS) 00359 /* We need to check that <math.h> hasn't already been included earlier 00360 * as it seems it doesn't agree with <fp.h>, yet we should really use 00361 * <fp.h> if possible. 00362 */ 00363 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) 00364 # include <fp.h> 00365 # endif 00366 # else 00367 # include <math.h> 00368 # endif 00369 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) 00370 /* Amiga SAS/C: We must include builtin FPU functions when compiling using 00371 * MATH=68881 00372 */ 00373 # include <m68881.h> 00374 # endif 00375 #endif 00376 00377 /* Codewarrior on NT has linking problems without this. */ 00378 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) 00379 # define PNG_ALWAYS_EXTERN 00380 #endif 00381 00382 /* This provides the non-ANSI (far) memory allocation routines. */ 00383 #if defined(__TURBOC__) && defined(__MSDOS__) 00384 # include <mem.h> 00385 # include <alloc.h> 00386 #endif 00387 00388 /* I have no idea why is this necessary... */ 00389 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ 00390 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) 00391 # include <malloc.h> 00392 #endif 00393 00394 /* This controls how fine the dithering gets. As this allocates 00395 * a largish chunk of memory (32K), those who are not as concerned 00396 * with dithering quality can decrease some or all of these. 00397 */ 00398 #ifndef PNG_DITHER_RED_BITS 00399 # define PNG_DITHER_RED_BITS 5 00400 #endif 00401 #ifndef PNG_DITHER_GREEN_BITS 00402 # define PNG_DITHER_GREEN_BITS 5 00403 #endif 00404 #ifndef PNG_DITHER_BLUE_BITS 00405 # define PNG_DITHER_BLUE_BITS 5 00406 #endif 00407 00408 /* This controls how fine the gamma correction becomes when you 00409 * are only interested in 8 bits anyway. Increasing this value 00410 * results in more memory being used, and more pow() functions 00411 * being called to fill in the gamma tables. Don't set this value 00412 * less then 8, and even that may not work (I haven't tested it). 00413 */ 00414 00415 #ifndef PNG_MAX_GAMMA_8 00416 # define PNG_MAX_GAMMA_8 11 00417 #endif 00418 00419 /* This controls how much a difference in gamma we can tolerate before 00420 * we actually start doing gamma conversion. 00421 */ 00422 #ifndef PNG_GAMMA_THRESHOLD 00423 # define PNG_GAMMA_THRESHOLD 0.05 00424 #endif 00425 00426 #endif /* PNG_INTERNAL */ 00427 00428 /* The following uses const char * instead of char * for error 00429 * and warning message functions, so some compilers won't complain. 00430 * If you do not want to use const, define PNG_NO_CONST here. 00431 */ 00432 00433 #ifndef PNG_NO_CONST 00434 # define PNG_CONST const 00435 #else 00436 # define PNG_CONST 00437 #endif 00438 00439 /* The following defines give you the ability to remove code from the 00440 * library that you will not be using. I wish I could figure out how to 00441 * automate this, but I can't do that without making it seriously hard 00442 * on the users. So if you are not using an ability, change the #define 00443 * to and #undef, and that part of the library will not be compiled. If 00444 * your linker can't find a function, you may want to make sure the 00445 * ability is defined here. Some of these depend upon some others being 00446 * defined. I haven't figured out all the interactions here, so you may 00447 * have to experiment awhile to get everything to compile. If you are 00448 * creating or using a shared library, you probably shouldn't touch this, 00449 * as it will affect the size of the structures, and this will cause bad 00450 * things to happen if the library and/or application ever change. 00451 */ 00452 00453 /* Any features you will not be using can be undef'ed here */ 00454 00455 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user 00456 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS 00457 * on the compile line, then pick and choose which ones to define without 00458 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED 00459 * if you only want to have a png-compliant reader/writer but don't need 00460 * any of the extra transformations. This saves about 80 kbytes in a 00461 * typical installation of the library. (PNG_NO_* form added in version 00462 * 1.0.1c, for consistency) 00463 */ 00464 00465 /* The size of the png_text structure changed in libpng-1.0.6 when 00466 * iTXt support was added. iTXt support was turned off by default through 00467 * libpng-1.2.x, to support old apps that malloc the png_text structure 00468 * instead of calling png_set_text() and letting libpng malloc it. It 00469 * was turned on by default in libpng-1.3.0. 00470 */ 00471 00472 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 00473 # ifndef PNG_NO_iTXt_SUPPORTED 00474 # define PNG_NO_iTXt_SUPPORTED 00475 # endif 00476 # ifndef PNG_NO_READ_iTXt 00477 # define PNG_NO_READ_iTXt 00478 # endif 00479 # ifndef PNG_NO_WRITE_iTXt 00480 # define PNG_NO_WRITE_iTXt 00481 # endif 00482 #endif 00483 00484 #if !defined(PNG_NO_iTXt_SUPPORTED) 00485 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) 00486 # define PNG_READ_iTXt 00487 # endif 00488 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) 00489 # define PNG_WRITE_iTXt 00490 # endif 00491 #endif 00492 00493 /* The following support, added after version 1.0.0, can be turned off here en 00494 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility 00495 * with old applications that require the length of png_struct and png_info 00496 * to remain unchanged. 00497 */ 00498 00499 #ifdef PNG_LEGACY_SUPPORTED 00500 # define PNG_NO_FREE_ME 00501 # define PNG_NO_READ_UNKNOWN_CHUNKS 00502 # define PNG_NO_WRITE_UNKNOWN_CHUNKS 00503 # define PNG_NO_READ_USER_CHUNKS 00504 # define PNG_NO_READ_iCCP 00505 # define PNG_NO_WRITE_iCCP 00506 # define PNG_NO_READ_iTXt 00507 # define PNG_NO_WRITE_iTXt 00508 # define PNG_NO_READ_sCAL 00509 # define PNG_NO_WRITE_sCAL 00510 # define PNG_NO_READ_sPLT 00511 # define PNG_NO_WRITE_sPLT 00512 # define PNG_NO_INFO_IMAGE 00513 # define PNG_NO_READ_RGB_TO_GRAY 00514 # define PNG_NO_READ_USER_TRANSFORM 00515 # define PNG_NO_WRITE_USER_TRANSFORM 00516 # define PNG_NO_USER_MEM 00517 # define PNG_NO_READ_EMPTY_PLTE 00518 # define PNG_NO_MNG_FEATURES 00519 # define PNG_NO_FIXED_POINT_SUPPORTED 00520 #endif 00521 00522 /* Ignore attempt to turn off both floating and fixed point support */ 00523 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ 00524 !defined(PNG_NO_FIXED_POINT_SUPPORTED) 00525 # define PNG_FIXED_POINT_SUPPORTED 00526 #endif 00527 00528 #ifndef PNG_NO_FREE_ME 00529 # define PNG_FREE_ME_SUPPORTED 00530 #endif 00531 00532 #if defined(PNG_READ_SUPPORTED) 00533 00534 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ 00535 !defined(PNG_NO_READ_TRANSFORMS) 00536 # define PNG_READ_TRANSFORMS_SUPPORTED 00537 #endif 00538 00539 #ifdef PNG_READ_TRANSFORMS_SUPPORTED 00540 # ifndef PNG_NO_READ_EXPAND 00541 # define PNG_READ_EXPAND_SUPPORTED 00542 # endif 00543 # ifndef PNG_NO_READ_SHIFT 00544 # define PNG_READ_SHIFT_SUPPORTED 00545 # endif 00546 # ifndef PNG_NO_READ_PACK 00547 # define PNG_READ_PACK_SUPPORTED 00548 # endif 00549 # ifndef PNG_NO_READ_BGR 00550 # define PNG_READ_BGR_SUPPORTED 00551 # endif 00552 # ifndef PNG_NO_READ_SWAP 00553 # define PNG_READ_SWAP_SUPPORTED 00554 # endif 00555 # ifndef PNG_NO_READ_PACKSWAP 00556 # define PNG_READ_PACKSWAP_SUPPORTED 00557 # endif 00558 # ifndef PNG_NO_READ_INVERT 00559 # define PNG_READ_INVERT_SUPPORTED 00560 # endif 00561 # ifndef PNG_NO_READ_DITHER 00562 # define PNG_READ_DITHER_SUPPORTED 00563 # endif 00564 # ifndef PNG_NO_READ_BACKGROUND 00565 # define PNG_READ_BACKGROUND_SUPPORTED 00566 # endif 00567 # ifndef PNG_NO_READ_16_TO_8 00568 # define PNG_READ_16_TO_8_SUPPORTED 00569 # endif 00570 # ifndef PNG_NO_READ_FILLER 00571 # define PNG_READ_FILLER_SUPPORTED 00572 # endif 00573 # ifndef PNG_NO_READ_GAMMA 00574 # define PNG_READ_GAMMA_SUPPORTED 00575 # endif 00576 # ifndef PNG_NO_READ_GRAY_TO_RGB 00577 # define PNG_READ_GRAY_TO_RGB_SUPPORTED 00578 # endif 00579 # ifndef PNG_NO_READ_SWAP_ALPHA 00580 # define PNG_READ_SWAP_ALPHA_SUPPORTED 00581 # endif 00582 # ifndef PNG_NO_READ_INVERT_ALPHA 00583 # define PNG_READ_INVERT_ALPHA_SUPPORTED 00584 # endif 00585 # ifndef PNG_NO_READ_STRIP_ALPHA 00586 # define PNG_READ_STRIP_ALPHA_SUPPORTED 00587 # endif 00588 # ifndef PNG_NO_READ_USER_TRANSFORM 00589 # define PNG_READ_USER_TRANSFORM_SUPPORTED 00590 # endif 00591 # ifndef PNG_NO_READ_RGB_TO_GRAY 00592 # define PNG_READ_RGB_TO_GRAY_SUPPORTED 00593 # endif 00594 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */ 00595 00596 #if !defined(PNG_NO_PROGRESSIVE_READ) && \ 00597 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */ 00598 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ 00599 #endif /* about interlacing capability! You'll */ 00600 /* still have interlacing unless you change the following line: */ 00601 00602 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */ 00603 00604 #ifndef PNG_NO_READ_COMPOSITE_NODIV 00605 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ 00606 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ 00607 # endif 00608 #endif 00609 00610 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 00611 /* Deprecated, will be removed from version 2.0.0. 00612 Use PNG_MNG_FEATURES_SUPPORTED instead. */ 00613 #ifndef PNG_NO_READ_EMPTY_PLTE 00614 # define PNG_READ_EMPTY_PLTE_SUPPORTED 00615 #endif 00616 #endif 00617 00618 #endif /* PNG_READ_SUPPORTED */ 00619 00620 #if defined(PNG_WRITE_SUPPORTED) 00621 00622 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ 00623 !defined(PNG_NO_WRITE_TRANSFORMS) 00624 # define PNG_WRITE_TRANSFORMS_SUPPORTED 00625 #endif 00626 00627 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED 00628 # ifndef PNG_NO_WRITE_SHIFT 00629 # define PNG_WRITE_SHIFT_SUPPORTED 00630 # endif 00631 # ifndef PNG_NO_WRITE_PACK 00632 # define PNG_WRITE_PACK_SUPPORTED 00633 # endif 00634 # ifndef PNG_NO_WRITE_BGR 00635 # define PNG_WRITE_BGR_SUPPORTED 00636 # endif 00637 # ifndef PNG_NO_WRITE_SWAP 00638 # define PNG_WRITE_SWAP_SUPPORTED 00639 # endif 00640 # ifndef PNG_NO_WRITE_PACKSWAP 00641 # define PNG_WRITE_PACKSWAP_SUPPORTED 00642 # endif 00643 # ifndef PNG_NO_WRITE_INVERT 00644 # define PNG_WRITE_INVERT_SUPPORTED 00645 # endif 00646 # ifndef PNG_NO_WRITE_FILLER 00647 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ 00648 # endif 00649 # ifndef PNG_NO_WRITE_SWAP_ALPHA 00650 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED 00651 # endif 00652 # ifndef PNG_NO_WRITE_INVERT_ALPHA 00653 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED 00654 # endif 00655 # ifndef PNG_NO_WRITE_USER_TRANSFORM 00656 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED 00657 # endif 00658 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ 00659 00660 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \ 00661 !defined(PNG_WRITE_INTERLACING_SUPPORTED) 00662 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant 00663 encoders, but can cause trouble 00664 if left undefined */ 00665 #endif 00666 00667 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ 00668 !defined(PNG_WRITE_WEIGHTED_FILTER) && \ 00669 defined(PNG_FLOATING_POINT_SUPPORTED) 00670 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED 00671 #endif 00672 00673 #ifndef PNG_NO_WRITE_FLUSH 00674 # define PNG_WRITE_FLUSH_SUPPORTED 00675 #endif 00676 00677 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 00678 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ 00679 #ifndef PNG_NO_WRITE_EMPTY_PLTE 00680 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED 00681 #endif 00682 #endif 00683 00684 #endif /* PNG_WRITE_SUPPORTED */ 00685 00686 #ifndef PNG_1_0_X 00687 # ifndef PNG_NO_ERROR_NUMBERS 00688 # define PNG_ERROR_NUMBERS_SUPPORTED 00689 # endif 00690 #endif /* PNG_1_0_X */ 00691 00692 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 00693 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) 00694 # ifndef PNG_NO_USER_TRANSFORM_PTR 00695 # define PNG_USER_TRANSFORM_PTR_SUPPORTED 00696 # endif 00697 #endif 00698 00699 #ifndef PNG_NO_STDIO 00700 # define PNG_TIME_RFC1123_SUPPORTED 00701 #endif 00702 00703 /* This adds extra functions in pngget.c for accessing data from the 00704 * info pointer (added in version 0.99) 00705 * png_get_image_width() 00706 * png_get_image_height() 00707 * png_get_bit_depth() 00708 * png_get_color_type() 00709 * png_get_compression_type() 00710 * png_get_filter_type() 00711 * png_get_interlace_type() 00712 * png_get_pixel_aspect_ratio() 00713 * png_get_pixels_per_meter() 00714 * png_get_x_offset_pixels() 00715 * png_get_y_offset_pixels() 00716 * png_get_x_offset_microns() 00717 * png_get_y_offset_microns() 00718 */ 00719 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) 00720 # define PNG_EASY_ACCESS_SUPPORTED 00721 #endif 00722 00723 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 00724 even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */ 00725 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE) 00726 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED 00727 # define PNG_ASSEMBLER_CODE_SUPPORTED 00728 # endif 00729 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) && \ 00730 defined(__MMX__) 00731 # define PNG_MMX_CODE_SUPPORTED 00732 # endif 00733 # if !defined(PNG_USE_PNGGCCRD) && !defined(PNG_NO_MMX_CODE) && \ 00734 !defined(PNG_USE_PNGVCRD) && defined(__MMX__) 00735 # define PNG_USE_PNGGCCRD 00736 # endif 00737 #endif 00738 00739 /* If you are sure that you don't need thread safety and you are compiling 00740 with PNG_USE_PNGCCRD for an MMX application, you can define this for 00741 faster execution. See pnggccrd.c. 00742 #define PNG_THREAD_UNSAFE_OK 00743 */ 00744 00745 #if !defined(PNG_1_0_X) 00746 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) 00747 # define PNG_USER_MEM_SUPPORTED 00748 #endif 00749 #endif /* PNG_1_0_X */ 00750 00751 /* Added at libpng-1.2.6 */ 00752 #if !defined(PNG_1_0_X) 00753 #ifndef PNG_SET_USER_LIMITS_SUPPORTED 00754 #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED) 00755 # define PNG_SET_USER_LIMITS_SUPPORTED 00756 #endif 00757 #endif 00758 #endif /* PNG_1_0_X */ 00759 00760 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter 00761 * how large, set these limits to 0x7fffffffL 00762 */ 00763 #ifndef PNG_USER_WIDTH_MAX 00764 # define PNG_USER_WIDTH_MAX 1000000L 00765 #endif 00766 #ifndef PNG_USER_HEIGHT_MAX 00767 # define PNG_USER_HEIGHT_MAX 1000000L 00768 #endif 00769 00770 /* These are currently experimental features, define them if you want */ 00771 00772 /* very little testing */ 00773 /* 00774 #ifdef PNG_READ_SUPPORTED 00775 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 00776 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 00777 # endif 00778 #endif 00779 */ 00780 00781 /* This is only for PowerPC big-endian and 680x0 systems */ 00782 /* some testing */ 00783 /* 00784 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED 00785 # define PNG_READ_BIG_ENDIAN_SUPPORTED 00786 #endif 00787 */ 00788 00789 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */ 00790 /* 00791 #define PNG_NO_POINTER_INDEXING 00792 */ 00793 00794 /* These functions are turned off by default, as they will be phased out. */ 00795 /* 00796 #define PNG_USELESS_TESTS_SUPPORTED 00797 #define PNG_CORRECT_PALETTE_SUPPORTED 00798 */ 00799 00800 /* Any chunks you are not interested in, you can undef here. The 00801 * ones that allocate memory may be expecially important (hIST, 00802 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info 00803 * a bit smaller. 00804 */ 00805 00806 #if defined(PNG_READ_SUPPORTED) && \ 00807 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 00808 !defined(PNG_NO_READ_ANCILLARY_CHUNKS) 00809 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 00810 #endif 00811 00812 #if defined(PNG_WRITE_SUPPORTED) && \ 00813 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 00814 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) 00815 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 00816 #endif 00817 00818 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 00819 00820 #ifdef PNG_NO_READ_TEXT 00821 # define PNG_NO_READ_iTXt 00822 # define PNG_NO_READ_tEXt 00823 # define PNG_NO_READ_zTXt 00824 #endif 00825 #ifndef PNG_NO_READ_bKGD 00826 # define PNG_READ_bKGD_SUPPORTED 00827 # define PNG_bKGD_SUPPORTED 00828 #endif 00829 #ifndef PNG_NO_READ_cHRM 00830 # define PNG_READ_cHRM_SUPPORTED 00831 # define PNG_cHRM_SUPPORTED 00832 #endif 00833 #ifndef PNG_NO_READ_gAMA 00834 # define PNG_READ_gAMA_SUPPORTED 00835 # define PNG_gAMA_SUPPORTED 00836 #endif 00837 #ifndef PNG_NO_READ_hIST 00838 # define PNG_READ_hIST_SUPPORTED 00839 # define PNG_hIST_SUPPORTED 00840 #endif 00841 #ifndef PNG_NO_READ_iCCP 00842 # define PNG_READ_iCCP_SUPPORTED 00843 # define PNG_iCCP_SUPPORTED 00844 #endif 00845 #ifndef PNG_NO_READ_iTXt 00846 # ifndef PNG_READ_iTXt_SUPPORTED 00847 # define PNG_READ_iTXt_SUPPORTED 00848 # endif 00849 # ifndef PNG_iTXt_SUPPORTED 00850 # define PNG_iTXt_SUPPORTED 00851 # endif 00852 #endif 00853 #ifndef PNG_NO_READ_oFFs 00854 # define PNG_READ_oFFs_SUPPORTED 00855 # define PNG_oFFs_SUPPORTED 00856 #endif 00857 #ifndef PNG_NO_READ_pCAL 00858 # define PNG_READ_pCAL_SUPPORTED 00859 # define PNG_pCAL_SUPPORTED 00860 #endif 00861 #ifndef PNG_NO_READ_sCAL 00862 # define PNG_READ_sCAL_SUPPORTED 00863 # define PNG_sCAL_SUPPORTED 00864 #endif 00865 #ifndef PNG_NO_READ_pHYs 00866 # define PNG_READ_pHYs_SUPPORTED 00867 # define PNG_pHYs_SUPPORTED 00868 #endif 00869 #ifndef PNG_NO_READ_sBIT 00870 # define PNG_READ_sBIT_SUPPORTED 00871 # define PNG_sBIT_SUPPORTED 00872 #endif 00873 #ifndef PNG_NO_READ_sPLT 00874 # define PNG_READ_sPLT_SUPPORTED 00875 # define PNG_sPLT_SUPPORTED 00876 #endif 00877 #ifndef PNG_NO_READ_sRGB 00878 # define PNG_READ_sRGB_SUPPORTED 00879 # define PNG_sRGB_SUPPORTED 00880 #endif 00881 #ifndef PNG_NO_READ_tEXt 00882 # define PNG_READ_tEXt_SUPPORTED 00883 # define PNG_tEXt_SUPPORTED 00884 #endif 00885 #ifndef PNG_NO_READ_tIME 00886 # define PNG_READ_tIME_SUPPORTED 00887 # define PNG_tIME_SUPPORTED 00888 #endif 00889 #ifndef PNG_NO_READ_tRNS 00890 # define PNG_READ_tRNS_SUPPORTED 00891 # define PNG_tRNS_SUPPORTED 00892 #endif 00893 #ifndef PNG_NO_READ_zTXt 00894 # define PNG_READ_zTXt_SUPPORTED 00895 # define PNG_zTXt_SUPPORTED 00896 #endif 00897 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS 00898 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED 00899 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 00900 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 00901 # endif 00902 # ifndef PNG_NO_HANDLE_AS_UNKNOWN 00903 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 00904 # endif 00905 #endif 00906 #if !defined(PNG_NO_READ_USER_CHUNKS) && \ 00907 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) 00908 # define PNG_READ_USER_CHUNKS_SUPPORTED 00909 # define PNG_USER_CHUNKS_SUPPORTED 00910 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS 00911 # undef PNG_NO_READ_UNKNOWN_CHUNKS 00912 # endif 00913 # ifdef PNG_NO_HANDLE_AS_UNKNOWN 00914 # undef PNG_NO_HANDLE_AS_UNKNOWN 00915 # endif 00916 #endif 00917 #ifndef PNG_NO_READ_OPT_PLTE 00918 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ 00919 #endif /* optional PLTE chunk in RGB and RGBA images */ 00920 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ 00921 defined(PNG_READ_zTXt_SUPPORTED) 00922 # define PNG_READ_TEXT_SUPPORTED 00923 # define PNG_TEXT_SUPPORTED 00924 #endif 00925 00926 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ 00927 00928 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 00929 00930 #ifdef PNG_NO_WRITE_TEXT 00931 # define PNG_NO_WRITE_iTXt 00932 # define PNG_NO_WRITE_tEXt 00933 # define PNG_NO_WRITE_zTXt 00934 #endif 00935 #ifndef PNG_NO_WRITE_bKGD 00936 # define PNG_WRITE_bKGD_SUPPORTED 00937 # ifndef PNG_bKGD_SUPPORTED 00938 # define PNG_bKGD_SUPPORTED 00939 # endif 00940 #endif 00941 #ifndef PNG_NO_WRITE_cHRM 00942 # define PNG_WRITE_cHRM_SUPPORTED 00943 # ifndef PNG_cHRM_SUPPORTED 00944 # define PNG_cHRM_SUPPORTED 00945 # endif 00946 #endif 00947 #ifndef PNG_NO_WRITE_gAMA 00948 # define PNG_WRITE_gAMA_SUPPORTED 00949 # ifndef PNG_gAMA_SUPPORTED 00950 # define PNG_gAMA_SUPPORTED 00951 # endif 00952 #endif 00953 #ifndef PNG_NO_WRITE_hIST 00954 # define PNG_WRITE_hIST_SUPPORTED 00955 # ifndef PNG_hIST_SUPPORTED 00956 # define PNG_hIST_SUPPORTED 00957 # endif 00958 #endif 00959 #ifndef PNG_NO_WRITE_iCCP 00960 # define PNG_WRITE_iCCP_SUPPORTED 00961 # ifndef PNG_iCCP_SUPPORTED 00962 # define PNG_iCCP_SUPPORTED 00963 # endif 00964 #endif 00965 #ifndef PNG_NO_WRITE_iTXt 00966 # ifndef PNG_WRITE_iTXt_SUPPORTED 00967 # define PNG_WRITE_iTXt_SUPPORTED 00968 # endif 00969 # ifndef PNG_iTXt_SUPPORTED 00970 # define PNG_iTXt_SUPPORTED 00971 # endif 00972 #endif 00973 #ifndef PNG_NO_WRITE_oFFs 00974 # define PNG_WRITE_oFFs_SUPPORTED 00975 # ifndef PNG_oFFs_SUPPORTED 00976 # define PNG_oFFs_SUPPORTED 00977 # endif 00978 #endif 00979 #ifndef PNG_NO_WRITE_pCAL 00980 # define PNG_WRITE_pCAL_SUPPORTED 00981 # ifndef PNG_pCAL_SUPPORTED 00982 # define PNG_pCAL_SUPPORTED 00983 # endif 00984 #endif 00985 #ifndef PNG_NO_WRITE_sCAL 00986 # define PNG_WRITE_sCAL_SUPPORTED 00987 # ifndef PNG_sCAL_SUPPORTED 00988 # define PNG_sCAL_SUPPORTED 00989 # endif 00990 #endif 00991 #ifndef PNG_NO_WRITE_pHYs 00992 # define PNG_WRITE_pHYs_SUPPORTED 00993 # ifndef PNG_pHYs_SUPPORTED 00994 # define PNG_pHYs_SUPPORTED 00995 # endif 00996 #endif 00997 #ifndef PNG_NO_WRITE_sBIT 00998 # define PNG_WRITE_sBIT_SUPPORTED 00999 # ifndef PNG_sBIT_SUPPORTED 01000 # define PNG_sBIT_SUPPORTED 01001 # endif 01002 #endif 01003 #ifndef PNG_NO_WRITE_sPLT 01004 # define PNG_WRITE_sPLT_SUPPORTED 01005 # ifndef PNG_sPLT_SUPPORTED 01006 # define PNG_sPLT_SUPPORTED 01007 # endif 01008 #endif 01009 #ifndef PNG_NO_WRITE_sRGB 01010 # define PNG_WRITE_sRGB_SUPPORTED 01011 # ifndef PNG_sRGB_SUPPORTED 01012 # define PNG_sRGB_SUPPORTED 01013 # endif 01014 #endif 01015 #ifndef PNG_NO_WRITE_tEXt 01016 # define PNG_WRITE_tEXt_SUPPORTED 01017 # ifndef PNG_tEXt_SUPPORTED 01018 # define PNG_tEXt_SUPPORTED 01019 # endif 01020 #endif 01021 #ifndef PNG_NO_WRITE_tIME 01022 # define PNG_WRITE_tIME_SUPPORTED 01023 # ifndef PNG_tIME_SUPPORTED 01024 # define PNG_tIME_SUPPORTED 01025 # endif 01026 #endif 01027 #ifndef PNG_NO_WRITE_tRNS 01028 # define PNG_WRITE_tRNS_SUPPORTED 01029 # ifndef PNG_tRNS_SUPPORTED 01030 # define PNG_tRNS_SUPPORTED 01031 # endif 01032 #endif 01033 #ifndef PNG_NO_WRITE_zTXt 01034 # define PNG_WRITE_zTXt_SUPPORTED 01035 # ifndef PNG_zTXt_SUPPORTED 01036 # define PNG_zTXt_SUPPORTED 01037 # endif 01038 #endif 01039 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS 01040 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 01041 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 01042 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 01043 # endif 01044 # ifndef PNG_NO_HANDLE_AS_UNKNOWN 01045 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 01046 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 01047 # endif 01048 # endif 01049 #endif 01050 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ 01051 defined(PNG_WRITE_zTXt_SUPPORTED) 01052 # define PNG_WRITE_TEXT_SUPPORTED 01053 # ifndef PNG_TEXT_SUPPORTED 01054 # define PNG_TEXT_SUPPORTED 01055 # endif 01056 #endif 01057 01058 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ 01059 01060 /* Turn this off to disable png_read_png() and 01061 * png_write_png() and leave the row_pointers member 01062 * out of the info structure. 01063 */ 01064 #ifndef PNG_NO_INFO_IMAGE 01065 # define PNG_INFO_IMAGE_SUPPORTED 01066 #endif 01067 01068 /* need the time information for reading tIME chunks */ 01069 #if defined(PNG_tIME_SUPPORTED) 01070 # if !defined(_WIN32_WCE) 01071 /* "time.h" functions are not supported on WindowsCE */ 01072 # include <time.h> 01073 # endif 01074 #endif 01075 01076 /* Some typedefs to get us started. These should be safe on most of the 01077 * common platforms. The typedefs should be at least as large as the 01078 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they 01079 * don't have to be exactly that size. Some compilers dislike passing 01080 * unsigned shorts as function parameters, so you may be better off using 01081 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may 01082 * want to have unsigned int for png_uint_32 instead of unsigned long. 01083 */ 01084 01085 typedef unsigned long png_uint_32; 01086 typedef long png_int_32; 01087 typedef unsigned short png_uint_16; 01088 typedef short png_int_16; 01089 typedef unsigned char png_byte; 01090 01091 /* This is usually size_t. It is typedef'ed just in case you need it to 01092 change (I'm not sure if you will or not, so I thought I'd be safe) */ 01093 #ifdef PNG_SIZE_T 01094 typedef PNG_SIZE_T png_size_t; 01095 # define png_sizeof(x) png_convert_size(sizeof (x)) 01096 #else 01097 typedef size_t png_size_t; 01098 # define png_sizeof(x) sizeof (x) 01099 #endif 01100 01101 /* The following is needed for medium model support. It cannot be in the 01102 * PNG_INTERNAL section. Needs modification for other compilers besides 01103 * MSC. Model independent support declares all arrays and pointers to be 01104 * large using the far keyword. The zlib version used must also support 01105 * model independent data. As of version zlib 1.0.4, the necessary changes 01106 * have been made in zlib. The USE_FAR_KEYWORD define triggers other 01107 * changes that are needed. (Tim Wegner) 01108 */ 01109 01110 /* Separate compiler dependencies (problem here is that zlib.h always 01111 defines FAR. (SJT) */ 01112 #ifdef __BORLANDC__ 01113 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) 01114 # define LDATA 1 01115 # else 01116 # define LDATA 0 01117 # endif 01118 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ 01119 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) 01120 # define PNG_MAX_MALLOC_64K 01121 # if (LDATA != 1) 01122 # ifndef FAR 01123 # define FAR __far 01124 # endif 01125 # define USE_FAR_KEYWORD 01126 # endif /* LDATA != 1 */ 01127 /* Possibly useful for moving data out of default segment. 01128 * Uncomment it if you want. Could also define FARDATA as 01129 * const if your compiler supports it. (SJT) 01130 # define FARDATA FAR 01131 */ 01132 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */ 01133 #endif /* __BORLANDC__ */ 01134 01135 01136 /* Suggest testing for specific compiler first before testing for 01137 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, 01138 * making reliance oncertain keywords suspect. (SJT) 01139 */ 01140 01141 /* MSC Medium model */ 01142 #if defined(FAR) 01143 # if defined(M_I86MM) 01144 # define USE_FAR_KEYWORD 01145 # define FARDATA FAR 01146 # include <dos.h> 01147 # endif 01148 #endif 01149 01150 /* SJT: default case */ 01151 #ifndef FAR 01152 # define FAR 01153 #endif 01154 01155 /* At this point FAR is always defined */ 01156 #ifndef FARDATA 01157 # define FARDATA 01158 #endif 01159 01160 /* Typedef for floating-point numbers that are converted 01161 to fixed-point with a multiple of 100,000, e.g., int_gamma */ 01162 typedef png_int_32 png_fixed_point; 01163 01164 /* Add typedefs for pointers */ 01165 typedef void FAR * png_voidp; 01166 typedef png_byte FAR * png_bytep; 01167 typedef png_uint_32 FAR * png_uint_32p; 01168 typedef png_int_32 FAR * png_int_32p; 01169 typedef png_uint_16 FAR * png_uint_16p; 01170 typedef png_int_16 FAR * png_int_16p; 01171 typedef PNG_CONST char FAR * png_const_charp; 01172 typedef char FAR * png_charp; 01173 typedef png_fixed_point FAR * png_fixed_point_p; 01174 01175 #ifndef PNG_NO_STDIO 01176 #if defined(_WIN32_WCE) 01177 typedef HANDLE png_FILE_p; 01178 #else 01179 typedef FILE * png_FILE_p; 01180 #endif 01181 #endif 01182 01183 #ifdef PNG_FLOATING_POINT_SUPPORTED 01184 typedef double FAR * png_doublep; 01185 #endif 01186 01187 /* Pointers to pointers; i.e. arrays */ 01188 typedef png_byte FAR * FAR * png_bytepp; 01189 typedef png_uint_32 FAR * FAR * png_uint_32pp; 01190 typedef png_int_32 FAR * FAR * png_int_32pp; 01191 typedef png_uint_16 FAR * FAR * png_uint_16pp; 01192 typedef png_int_16 FAR * FAR * png_int_16pp; 01193 typedef PNG_CONST char FAR * FAR * png_const_charpp; 01194 typedef char FAR * FAR * png_charpp; 01195 typedef png_fixed_point FAR * FAR * png_fixed_point_pp; 01196 #ifdef PNG_FLOATING_POINT_SUPPORTED 01197 typedef double FAR * FAR * png_doublepp; 01198 #endif 01199 01200 /* Pointers to pointers to pointers; i.e., pointer to array */ 01201 typedef char FAR * FAR * FAR * png_charppp; 01202 01203 #if defined(PNG_1_0_X) || defined(PNG_1_2_X) 01204 /* SPC - Is this stuff deprecated? */ 01205 /* It'll be removed as of libpng-1.3.0 - GR-P */ 01206 /* libpng typedefs for types in zlib. If zlib changes 01207 * or another compression library is used, then change these. 01208 * Eliminates need to change all the source files. 01209 */ 01210 typedef charf * png_zcharp; 01211 typedef charf * FAR * png_zcharpp; 01212 typedef z_stream FAR * png_zstreamp; 01213 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */ 01214 01215 /* 01216 * Define PNG_BUILD_DLL if the module being built is a Windows 01217 * LIBPNG DLL. 01218 * 01219 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. 01220 * It is equivalent to Microsoft predefined macro _DLL that is 01221 * automatically defined when you compile using the share 01222 * version of the CRT (C Run-Time library) 01223 * 01224 * The cygwin mods make this behavior a little different: 01225 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin 01226 * Define PNG_STATIC if you are building a static library for use with cygwin, 01227 * -or- if you are building an application that you want to link to the 01228 * static library. 01229 * PNG_USE_DLL is defined by default (no user action needed) unless one of 01230 * the other flags is defined. 01231 */ 01232 01233 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) 01234 # define PNG_DLL 01235 #endif 01236 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. 01237 * When building a static lib, default to no GLOBAL ARRAYS, but allow 01238 * command-line override 01239 */ 01240 #if defined(__CYGWIN__) 01241 # if !defined(PNG_STATIC) 01242 # if defined(PNG_USE_GLOBAL_ARRAYS) 01243 # undef PNG_USE_GLOBAL_ARRAYS 01244 # endif 01245 # if !defined(PNG_USE_LOCAL_ARRAYS) 01246 # define PNG_USE_LOCAL_ARRAYS 01247 # endif 01248 # else 01249 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) 01250 # if defined(PNG_USE_GLOBAL_ARRAYS) 01251 # undef PNG_USE_GLOBAL_ARRAYS 01252 # endif 01253 # endif 01254 # endif 01255 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 01256 # define PNG_USE_LOCAL_ARRAYS 01257 # endif 01258 #endif 01259 01260 /* Do not use global arrays (helps with building DLL's) 01261 * They are no longer used in libpng itself, since version 1.0.5c, 01262 * but might be required for some pre-1.0.5c applications. 01263 */ 01264 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 01265 # if defined(PNG_NO_GLOBAL_ARRAYS) || (defined(__GNUC__) && defined(PNG_DLL)) 01266 # define PNG_USE_LOCAL_ARRAYS 01267 # else 01268 # define PNG_USE_GLOBAL_ARRAYS 01269 # endif 01270 #endif 01271 01272 #if defined(__CYGWIN__) 01273 # undef PNGAPI 01274 # define PNGAPI __cdecl 01275 # undef PNG_IMPEXP 01276 # define PNG_IMPEXP 01277 #endif 01278 01279 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", 01280 * you may get warnings regarding the linkage of png_zalloc and png_zfree. 01281 * Don't ignore those warnings; you must also reset the default calling 01282 * convention in your compiler to match your PNGAPI, and you must build 01283 * zlib and your applications the same way you build libpng. 01284 */ 01285 01286 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF) 01287 # ifndef PNG_NO_MODULEDEF 01288 # define PNG_NO_MODULEDEF 01289 # endif 01290 #endif 01291 01292 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) 01293 # define PNG_IMPEXP 01294 #endif 01295 01296 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ 01297 (( defined(_Windows) || defined(_WINDOWS) || \ 01298 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) 01299 01300 # ifndef PNGAPI 01301 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) 01302 # define PNGAPI __cdecl 01303 # else 01304 # define PNGAPI _cdecl 01305 # endif 01306 # endif 01307 01308 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ 01309 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) 01310 # define PNG_IMPEXP 01311 # endif 01312 01313 # if !defined(PNG_IMPEXP) 01314 01315 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol 01316 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol 01317 01318 /* Borland/Microsoft */ 01319 # if defined(_MSC_VER) || defined(__BORLANDC__) 01320 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) 01321 # define PNG_EXPORT PNG_EXPORT_TYPE1 01322 # else 01323 # define PNG_EXPORT PNG_EXPORT_TYPE2 01324 # if defined(PNG_BUILD_DLL) 01325 # define PNG_IMPEXP __export 01326 # else 01327 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in 01328 VC++ */ 01329 # endif /* Exists in Borland C++ for 01330 C++ classes (== huge) */ 01331 # endif 01332 # endif 01333 01334 # if !defined(PNG_IMPEXP) 01335 # if defined(PNG_BUILD_DLL) 01336 # define PNG_IMPEXP __declspec(dllexport) 01337 # else 01338 # define PNG_IMPEXP __declspec(dllimport) 01339 # endif 01340 # endif 01341 # endif /* PNG_IMPEXP */ 01342 #else /* !(DLL || non-cygwin WINDOWS) */ 01343 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 01344 # ifndef PNGAPI 01345 # define PNGAPI _System 01346 # endif 01347 # else 01348 # if 0 /* ... other platforms, with other meanings */ 01349 # endif 01350 # endif 01351 #endif 01352 01353 #ifndef PNGAPI 01354 # define PNGAPI 01355 #endif 01356 #ifndef PNG_IMPEXP 01357 # define PNG_IMPEXP 01358 #endif 01359 01360 #ifdef PNG_BUILDSYMS 01361 # ifndef PNG_EXPORT 01362 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END 01363 # endif 01364 # ifdef PNG_USE_GLOBAL_ARRAYS 01365 # ifndef PNG_EXPORT_VAR 01366 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT 01367 # endif 01368 # endif 01369 #endif 01370 01371 #ifndef PNG_EXPORT 01372 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol 01373 #endif 01374 01375 #ifdef PNG_USE_GLOBAL_ARRAYS 01376 # ifndef PNG_EXPORT_VAR 01377 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type 01378 # endif 01379 #endif 01380 01381 /* User may want to use these so they are not in PNG_INTERNAL. Any library 01382 * functions that are passed far data must be model independent. 01383 */ 01384 01385 #ifndef PNG_ABORT 01386 # define PNG_ABORT() abort() 01387 #endif 01388 01389 #ifdef PNG_SETJMP_SUPPORTED 01390 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) 01391 #else 01392 # define png_jmpbuf(png_ptr) \ 01393 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) 01394 #endif 01395 01396 #if defined(USE_FAR_KEYWORD) /* memory model independent fns */ 01397 /* use this to make far-to-near assignments */ 01398 # define CHECK 1 01399 # define NOCHECK 0 01400 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) 01401 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) 01402 # define png_strcpy _fstrcpy 01403 # define png_strncpy _fstrncpy /* Added to v 1.2.6 */ 01404 # define png_strlen _fstrlen 01405 # define png_memcmp _fmemcmp /* SJT: added */ 01406 # define png_memcpy _fmemcpy 01407 # define png_memset _fmemset 01408 #else /* use the usual functions */ 01409 # define CVT_PTR(ptr) (ptr) 01410 # define CVT_PTR_NOCHECK(ptr) (ptr) 01411 # define png_strcpy strcpy 01412 # define png_strncpy strncpy /* Added to v 1.2.6 */ 01413 # define png_strlen strlen 01414 # define png_memcmp memcmp /* SJT: added */ 01415 # define png_memcpy memcpy 01416 # define png_memset memset 01417 #endif 01418 /* End of memory model independent support */ 01419 01420 /* Just a little check that someone hasn't tried to define something 01421 * contradictory. 01422 */ 01423 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) 01424 # undef PNG_ZBUF_SIZE 01425 # define PNG_ZBUF_SIZE 65536L 01426 #endif 01427 01428 #ifdef PNG_READ_SUPPORTED 01429 /* Prior to libpng-1.0.9, this block was in pngasmrd.h */ 01430 #if defined(PNG_INTERNAL) 01431 01432 /* These are the default thresholds before the MMX code kicks in; if either 01433 * rowbytes or bitdepth is below the threshold, plain C code is used. These 01434 * can be overridden at runtime via the png_set_mmx_thresholds() call in 01435 * libpng 1.2.0 and later. The values below were chosen by Intel. 01436 */ 01437 01438 #ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 01439 # define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 128 /* >= */ 01440 #endif 01441 #ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 01442 # define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 9 /* >= */ 01443 #endif 01444 01445 /* Set this in the makefile for VC++ on Pentium, not here. */ 01446 /* Platform must be Pentium. Makefile must assemble and load pngvcrd.c . 01447 * MMX will be detected at run time and used if present. 01448 */ 01449 #ifdef PNG_USE_PNGVCRD 01450 # define PNG_HAVE_ASSEMBLER_COMBINE_ROW 01451 # define PNG_HAVE_ASSEMBLER_READ_INTERLACE 01452 # define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW 01453 #endif 01454 01455 /* Set this in the makefile for gcc/as on Pentium, not here. */ 01456 /* Platform must be Pentium. Makefile must assemble and load pnggccrd.c . 01457 * MMX will be detected at run time and used if present. 01458 */ 01459 #ifdef PNG_USE_PNGGCCRD 01460 # define PNG_HAVE_ASSEMBLER_COMBINE_ROW 01461 # define PNG_HAVE_ASSEMBLER_READ_INTERLACE 01462 # define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW 01463 #endif 01464 /* - see pnggccrd.c for info about what is currently enabled */ 01465 01466 #endif /* PNG_INTERNAL */ 01467 #endif /* PNG_READ_SUPPORTED */ 01468 01469 /* Added at libpng-1.2.8 */ 01470 #endif /* PNG_VERSION_INFO_ONLY */ 01471 01472 #endif /* PNGCONF_H */
