1 2 /* pngconf.h - machine configurable file for libpng 3 * 4 * libpng version 1.2.37 - June 4, 2009 5 * For conditions of distribution and use, see copyright notice in png.h 6 * Copyright (c) 1998-2009 Glenn Randers-Pehrson 7 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) 8 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) 9 */ 10 11 /* Any machine specific code is near the front of this file, so if you 12 * are configuring libpng for a machine, you may want to read the section 13 * starting here down to where it starts to typedef png_color, png_text, 14 * and png_info. 15 */ 16 17 #ifndef PNGCONF_H 18 #define PNGCONF_H 19 20 #define PNG_1_2_X 21 22 /* 23 * PNG_USER_CONFIG has to be defined on the compiler command line. This 24 * includes the resource compiler for Windows DLL configurations. 25 */ 26 #ifdef PNG_USER_CONFIG 27 # ifndef PNG_USER_PRIVATEBUILD 28 # define PNG_USER_PRIVATEBUILD 29 # endif 30 #include "pngusr.h" 31 #endif 32 33 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */ 34 #ifdef PNG_CONFIGURE_LIBPNG 35 #ifdef HAVE_CONFIG_H 36 #include "config.h" 37 #endif 38 #endif 39 40 /* 41 * Added at libpng-1.2.8 42 * 43 * If you create a private DLL you need to define in "pngusr.h" the followings: 44 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of 45 * the DLL was built> 46 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons." 47 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to 48 * distinguish your DLL from those of the official release. These 49 * correspond to the trailing letters that come after the version 50 * number and must match your private DLL name> 51 * e.g. // private DLL "libpng13gx.dll" 52 * #define PNG_USER_DLLFNAME_POSTFIX "gx" 53 * 54 * The following macros are also at your disposal if you want to complete the 55 * DLL VERSIONINFO structure. 56 * - PNG_USER_VERSIONINFO_COMMENTS 57 * - PNG_USER_VERSIONINFO_COMPANYNAME 58 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS 59 */ 60 61 #ifdef __STDC__ 62 #ifdef SPECIALBUILD 63 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\ 64 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.") 65 #endif 66 67 #ifdef PRIVATEBUILD 68 # pragma message("PRIVATEBUILD is deprecated.\ 69 Use PNG_USER_PRIVATEBUILD instead.") 70 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD 71 #endif 72 #endif /* __STDC__ */ 73 74 #ifndef PNG_VERSION_INFO_ONLY 75 76 /* End of material added to libpng-1.2.8 */ 77 78 /* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble 79 Restored at libpng-1.2.21 */ 80 #if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \ 81 !defined(PNG_WARN_UNINITIALIZED_ROW) 82 # define PNG_WARN_UNINITIALIZED_ROW 1 83 #endif 84 /* End of material added at libpng-1.2.19/1.2.21 */ 85 86 /* This is the size of the compression buffer, and thus the size of 87 * an IDAT chunk. Make this whatever size you feel is best for your 88 * machine. One of these will be allocated per png_struct. When this 89 * is full, it writes the data to the disk, and does some other 90 * calculations. Making this an extremely small size will slow 91 * the library down, but you may want to experiment to determine 92 * where it becomes significant, if you are concerned with memory 93 * usage. Note that zlib allocates at least 32Kb also. For readers, 94 * this describes the size of the buffer available to read the data in. 95 * Unless this gets smaller than the size of a row (compressed), 96 * it should not make much difference how big this is. 97 */ 98 99 #ifndef PNG_ZBUF_SIZE 100 # define PNG_ZBUF_SIZE 8192 101 #endif 102 103 /* Enable if you want a write-only libpng */ 104 105 #ifndef PNG_NO_READ_SUPPORTED 106 # define PNG_READ_SUPPORTED 107 #endif 108 109 /* Enable if you want a read-only libpng */ 110 111 #ifndef PNG_NO_WRITE_SUPPORTED 112 # define PNG_WRITE_SUPPORTED 113 #endif 114 115 /* Enabled by default in 1.2.0. You can disable this if you don't need to 116 support PNGs that are embedded in MNG datastreams */ 117 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES) 118 # ifndef PNG_MNG_FEATURES_SUPPORTED 119 # define PNG_MNG_FEATURES_SUPPORTED 120 # endif 121 #endif 122 123 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED 124 # ifndef PNG_FLOATING_POINT_SUPPORTED 125 # define PNG_FLOATING_POINT_SUPPORTED 126 # endif 127 #endif 128 129 /* If you are running on a machine where you cannot allocate more 130 * than 64K of memory at once, uncomment this. While libpng will not 131 * normally need that much memory in a chunk (unless you load up a very 132 * large file), zlib needs to know how big of a chunk it can use, and 133 * libpng thus makes sure to check any memory allocation to verify it 134 * will fit into memory. 135 #define PNG_MAX_MALLOC_64K 136 */ 137 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) 138 # define PNG_MAX_MALLOC_64K 139 #endif 140 141 /* Special munging to support doing things the 'cygwin' way: 142 * 'Normal' png-on-win32 defines/defaults: 143 * PNG_BUILD_DLL -- building dll 144 * PNG_USE_DLL -- building an application, linking to dll 145 * (no define) -- building static library, or building an 146 * application and linking to the static lib 147 * 'Cygwin' defines/defaults: 148 * PNG_BUILD_DLL -- (ignored) building the dll 149 * (no define) -- (ignored) building an application, linking to the dll 150 * PNG_STATIC -- (ignored) building the static lib, or building an 151 * application that links to the static lib. 152 * ALL_STATIC -- (ignored) building various static libs, or building an 153 * application that links to the static libs. 154 * Thus, 155 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and 156 * this bit of #ifdefs will define the 'correct' config variables based on 157 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but 158 * unnecessary. 159 * 160 * Also, the precedence order is: 161 * ALL_STATIC (since we can't #undef something outside our namespace) 162 * PNG_BUILD_DLL 163 * PNG_STATIC 164 * (nothing) == PNG_USE_DLL 165 * 166 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent 167 * of auto-import in binutils, we no longer need to worry about 168 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, 169 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes 170 * to __declspec() stuff. However, we DO need to worry about 171 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults 172 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. 173 */ 174 #if defined(__CYGWIN__) 175 # if defined(ALL_STATIC) 176 # if defined(PNG_BUILD_DLL) 177 # undef PNG_BUILD_DLL 178 # endif 179 # if defined(PNG_USE_DLL) 180 # undef PNG_USE_DLL 181 # endif 182 # if defined(PNG_DLL) 183 # undef PNG_DLL 184 # endif 185 # if !defined(PNG_STATIC) 186 # define PNG_STATIC 187 # endif 188 # else 189 # if defined (PNG_BUILD_DLL) 190 # if defined(PNG_STATIC) 191 # undef PNG_STATIC 192 # endif 193 # if defined(PNG_USE_DLL) 194 # undef PNG_USE_DLL 195 # endif 196 # if !defined(PNG_DLL) 197 # define PNG_DLL 198 # endif 199 # else 200 # if defined(PNG_STATIC) 201 # if defined(PNG_USE_DLL) 202 # undef PNG_USE_DLL 203 # endif 204 # if defined(PNG_DLL) 205 # undef PNG_DLL 206 # endif 207 # else 208 # if !defined(PNG_USE_DLL) 209 # define PNG_USE_DLL 210 # endif 211 # if !defined(PNG_DLL) 212 # define PNG_DLL 213 # endif 214 # endif 215 # endif 216 # endif 217 #endif 218 219 /* This protects us against compilers that run on a windowing system 220 * and thus don't have or would rather us not use the stdio types: 221 * stdin, stdout, and stderr. The only one currently used is stderr 222 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will 223 * prevent these from being compiled and used. #defining PNG_NO_STDIO 224 * will also prevent these, plus will prevent the entire set of stdio 225 * macros and functions (FILE *, printf, etc.) from being compiled and used, 226 * unless (PNG_DEBUG > 0) has been #defined. 227 * 228 * #define PNG_NO_CONSOLE_IO 229 * #define PNG_NO_STDIO 230 */ 231 232 #if defined(_WIN32_WCE) 233 # include <windows.h> 234 /* Console I/O functions are not supported on WindowsCE */ 235 # define PNG_NO_CONSOLE_IO 236 /* abort() may not be supported on some/all Windows CE platforms */ 237 # define PNG_ABORT() exit(-1) 238 # ifdef PNG_DEBUG 239 # undef PNG_DEBUG 240 # endif 241 #endif 242 243 #ifdef PNG_BUILD_DLL 244 # ifndef PNG_CONSOLE_IO_SUPPORTED 245 # ifndef PNG_NO_CONSOLE_IO 246 # define PNG_NO_CONSOLE_IO 247 # endif 248 # endif 249 #endif 250 251 # ifdef PNG_NO_STDIO 252 # ifndef PNG_NO_CONSOLE_IO 253 # define PNG_NO_CONSOLE_IO 254 # endif 255 # ifdef PNG_DEBUG 256 # if (PNG_DEBUG > 0) 257 # include <stdio.h> 258 # endif 259 # endif 260 # else 261 # if !defined(_WIN32_WCE) 262 /* "stdio.h" functions are not supported on WindowsCE */ 263 # include <stdio.h> 264 # endif 265 # endif 266 267 /* This macro protects us against machines that don't have function 268 * prototypes (ie K&R style headers). If your compiler does not handle 269 * function prototypes, define this macro and use the included ansi2knr. 270 * I've always been able to use _NO_PROTO as the indicator, but you may 271 * need to drag the empty declaration out in front of here, or change the 272 * ifdef to suit your own needs. 273 */ 274 #ifndef PNGARG 275 276 #ifdef OF /* zlib prototype munger */ 277 # define PNGARG(arglist) OF(arglist) 278 #else 279 280 #ifdef _NO_PROTO 281 # define PNGARG(arglist) () 282 # ifndef PNG_TYPECAST_NULL 283 # define PNG_TYPECAST_NULL 284 # endif 285 #else 286 # define PNGARG(arglist) arglist 287 #endif /* _NO_PROTO */ 288 289 290 #endif /* OF */ 291 292 #endif /* PNGARG */ 293 294 /* Try to determine if we are compiling on a Mac. Note that testing for 295 * just __MWERKS__ is not good enough, because the Codewarrior is now used 296 * on non-Mac platforms. 297 */ 298 #ifndef MACOS 299 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ 300 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) 301 # define MACOS 302 # endif 303 #endif 304 305 /* enough people need this for various reasons to include it here */ 306 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) 307 # include <sys/types.h> 308 #endif 309 310 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) 311 # define PNG_SETJMP_SUPPORTED 312 #endif 313 314 #ifdef PNG_SETJMP_SUPPORTED 315 /* This is an attempt to force a single setjmp behaviour on Linux. If 316 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. 317 * 318 * You can bypass this test if you know that your application uses exactly 319 * the same setjmp.h that was included when libpng was built. Only define 320 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the 321 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK 322 * while building a separate libpng library for general use. 323 */ 324 325 # ifndef PNG_SKIP_SETJMP_CHECK 326 # ifdef __linux__ 327 # ifdef _BSD_SOURCE 328 # define PNG_SAVE_BSD_SOURCE 329 # undef _BSD_SOURCE 330 # endif 331 # ifdef _SETJMP_H 332 /* If you encounter a compiler error here, see the explanation 333 * near the end of INSTALL. 334 */ 335 __pngconf.h__ in libpng already includes setjmp.h; 336 __dont__ include it again.; 337 # endif 338 # endif /* __linux__ */ 339 # endif /* PNG_SKIP_SETJMP_CHECK */ 340 341 /* include setjmp.h for error handling */ 342 # include <setjmp.h> 343 344 # ifdef __linux__ 345 # ifdef PNG_SAVE_BSD_SOURCE 346 # ifndef _BSD_SOURCE 347 # define _BSD_SOURCE 348 # endif 349 # undef PNG_SAVE_BSD_SOURCE 350 # endif 351 # endif /* __linux__ */ 352 #endif /* PNG_SETJMP_SUPPORTED */ 353 354 #ifdef BSD 355 # include <strings.h> 356 #else 357 # include <string.h> 358 #endif 359 360 /* Other defines for things like memory and the like can go here. */ 361 #ifdef PNG_INTERNAL 362 363 #include <stdlib.h> 364 365 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which 366 * aren't usually used outside the library (as far as I know), so it is 367 * debatable if they should be exported at all. In the future, when it is 368 * possible to have run-time registry of chunk-handling functions, some of 369 * these will be made available again. 370 #define PNG_EXTERN extern 371 */ 372 #define PNG_EXTERN 373 374 /* Other defines specific to compilers can go here. Try to keep 375 * them inside an appropriate ifdef/endif pair for portability. 376 */ 377 378 #if defined(PNG_FLOATING_POINT_SUPPORTED) 379 # if defined(MACOS) 380 /* We need to check that <math.h> hasn't already been included earlier 381 * as it seems it doesn't agree with <fp.h>, yet we should really use 382 * <fp.h> if possible. 383 */ 384 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) 385 # include <fp.h> 386 # endif 387 # else 388 # include <math.h> 389 # endif 390 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) 391 /* Amiga SAS/C: We must include builtin FPU functions when compiling using 392 * MATH=68881 393 */ 394 # include <m68881.h> 395 # endif 396 #endif 397 398 /* Codewarrior on NT has linking problems without this. */ 399 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) 400 # define PNG_ALWAYS_EXTERN 401 #endif 402 403 /* This provides the non-ANSI (far) memory allocation routines. */ 404 #if defined(__TURBOC__) && defined(__MSDOS__) 405 # include <mem.h> 406 # include <alloc.h> 407 #endif 408 409 /* I have no idea why is this necessary... */ 410 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ 411 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) 412 # include <malloc.h> 413 #endif 414 415 /* This controls how fine the dithering gets. As this allocates 416 * a largish chunk of memory (32K), those who are not as concerned 417 * with dithering quality can decrease some or all of these. 418 */ 419 #ifndef PNG_DITHER_RED_BITS 420 # define PNG_DITHER_RED_BITS 5 421 #endif 422 #ifndef PNG_DITHER_GREEN_BITS 423 # define PNG_DITHER_GREEN_BITS 5 424 #endif 425 #ifndef PNG_DITHER_BLUE_BITS 426 # define PNG_DITHER_BLUE_BITS 5 427 #endif 428 429 /* This controls how fine the gamma correction becomes when you 430 * are only interested in 8 bits anyway. Increasing this value 431 * results in more memory being used, and more pow() functions 432 * being called to fill in the gamma tables. Don't set this value 433 * less then 8, and even that may not work (I haven't tested it). 434 */ 435 436 #ifndef PNG_MAX_GAMMA_8 437 # define PNG_MAX_GAMMA_8 11 438 #endif 439 440 /* This controls how much a difference in gamma we can tolerate before 441 * we actually start doing gamma conversion. 442 */ 443 #ifndef PNG_GAMMA_THRESHOLD 444 # define PNG_GAMMA_THRESHOLD 0.05 445 #endif 446 447 #endif /* PNG_INTERNAL */ 448 449 /* The following uses const char * instead of char * for error 450 * and warning message functions, so some compilers won't complain. 451 * If you do not want to use const, define PNG_NO_CONST here. 452 */ 453 454 #ifndef PNG_NO_CONST 455 # define PNG_CONST const 456 #else 457 # define PNG_CONST 458 #endif 459 460 /* The following defines give you the ability to remove code from the 461 * library that you will not be using. I wish I could figure out how to 462 * automate this, but I can't do that without making it seriously hard 463 * on the users. So if you are not using an ability, change the #define 464 * to and #undef, and that part of the library will not be compiled. If 465 * your linker can't find a function, you may want to make sure the 466 * ability is defined here. Some of these depend upon some others being 467 * defined. I haven't figured out all the interactions here, so you may 468 * have to experiment awhile to get everything to compile. If you are 469 * creating or using a shared library, you probably shouldn't touch this, 470 * as it will affect the size of the structures, and this will cause bad 471 * things to happen if the library and/or application ever change. 472 */ 473 474 /* Any features you will not be using can be undef'ed here */ 475 476 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user 477 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS 478 * on the compile line, then pick and choose which ones to define without 479 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED 480 * if you only want to have a png-compliant reader/writer but don't need 481 * any of the extra transformations. This saves about 80 kbytes in a 482 * typical installation of the library. (PNG_NO_* form added in version 483 * 1.0.1c, for consistency) 484 */ 485 486 /* The size of the png_text structure changed in libpng-1.0.6 when 487 * iTXt support was added. iTXt support was turned off by default through 488 * libpng-1.2.x, to support old apps that malloc the png_text structure 489 * instead of calling png_set_text() and letting libpng malloc it. It 490 * was turned on by default in libpng-1.3.0. 491 */ 492 493 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 494 # ifndef PNG_NO_iTXt_SUPPORTED 495 # define PNG_NO_iTXt_SUPPORTED 496 # endif 497 # ifndef PNG_NO_READ_iTXt 498 # define PNG_NO_READ_iTXt 499 # endif 500 # ifndef PNG_NO_WRITE_iTXt 501 # define PNG_NO_WRITE_iTXt 502 # endif 503 #endif 504 505 #if !defined(PNG_NO_iTXt_SUPPORTED) 506 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) 507 # define PNG_READ_iTXt 508 # endif 509 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) 510 # define PNG_WRITE_iTXt 511 # endif 512 #endif 513 514 /* The following support, added after version 1.0.0, can be turned off here en 515 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility 516 * with old applications that require the length of png_struct and png_info 517 * to remain unchanged. 518 */ 519 520 #ifdef PNG_LEGACY_SUPPORTED 521 # define PNG_NO_FREE_ME 522 # define PNG_NO_READ_UNKNOWN_CHUNKS 523 # define PNG_NO_WRITE_UNKNOWN_CHUNKS 524 # define PNG_NO_READ_USER_CHUNKS 525 # define PNG_NO_READ_iCCP 526 # define PNG_NO_WRITE_iCCP 527 # define PNG_NO_READ_iTXt 528 # define PNG_NO_WRITE_iTXt 529 # define PNG_NO_READ_sCAL 530 # define PNG_NO_WRITE_sCAL 531 # define PNG_NO_READ_sPLT 532 # define PNG_NO_WRITE_sPLT 533 # define PNG_NO_INFO_IMAGE 534 # define PNG_NO_READ_RGB_TO_GRAY 535 # define PNG_NO_READ_USER_TRANSFORM 536 # define PNG_NO_WRITE_USER_TRANSFORM 537 # define PNG_NO_USER_MEM 538 # define PNG_NO_READ_EMPTY_PLTE 539 # define PNG_NO_MNG_FEATURES 540 # define PNG_NO_FIXED_POINT_SUPPORTED 541 #endif 542 543 /* Ignore attempt to turn off both floating and fixed point support */ 544 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ 545 !defined(PNG_NO_FIXED_POINT_SUPPORTED) 546 # define PNG_FIXED_POINT_SUPPORTED 547 #endif 548 549 #ifndef PNG_NO_FREE_ME 550 # define PNG_FREE_ME_SUPPORTED 551 #endif 552 553 #if defined(PNG_READ_SUPPORTED) 554 555 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ 556 !defined(PNG_NO_READ_TRANSFORMS) 557 # define PNG_READ_TRANSFORMS_SUPPORTED 558 #endif 559 560 #ifdef PNG_READ_TRANSFORMS_SUPPORTED 561 # ifndef PNG_NO_READ_EXPAND 562 # define PNG_READ_EXPAND_SUPPORTED 563 # endif 564 # ifndef PNG_NO_READ_SHIFT 565 # define PNG_READ_SHIFT_SUPPORTED 566 # endif 567 # ifndef PNG_NO_READ_PACK 568 # define PNG_READ_PACK_SUPPORTED 569 # endif 570 # ifndef PNG_NO_READ_BGR 571 # define PNG_READ_BGR_SUPPORTED 572 # endif 573 # ifndef PNG_NO_READ_SWAP 574 # define PNG_READ_SWAP_SUPPORTED 575 # endif 576 # ifndef PNG_NO_READ_PACKSWAP 577 # define PNG_READ_PACKSWAP_SUPPORTED 578 # endif 579 # ifndef PNG_NO_READ_INVERT 580 # define PNG_READ_INVERT_SUPPORTED 581 # endif 582 # ifndef PNG_NO_READ_DITHER 583 # define PNG_READ_DITHER_SUPPORTED 584 # endif 585 # ifndef PNG_NO_READ_BACKGROUND 586 # define PNG_READ_BACKGROUND_SUPPORTED 587 # endif 588 # ifndef PNG_NO_READ_16_TO_8 589 # define PNG_READ_16_TO_8_SUPPORTED 590 # endif 591 # ifndef PNG_NO_READ_FILLER 592 # define PNG_READ_FILLER_SUPPORTED 593 # endif 594 # ifndef PNG_NO_READ_GAMMA 595 # define PNG_READ_GAMMA_SUPPORTED 596 # endif 597 # ifndef PNG_NO_READ_GRAY_TO_RGB 598 # define PNG_READ_GRAY_TO_RGB_SUPPORTED 599 # endif 600 # ifndef PNG_NO_READ_SWAP_ALPHA 601 # define PNG_READ_SWAP_ALPHA_SUPPORTED 602 # endif 603 # ifndef PNG_NO_READ_INVERT_ALPHA 604 # define PNG_READ_INVERT_ALPHA_SUPPORTED 605 # endif 606 # ifndef PNG_NO_READ_STRIP_ALPHA 607 # define PNG_READ_STRIP_ALPHA_SUPPORTED 608 # endif 609 # ifndef PNG_NO_READ_USER_TRANSFORM 610 # define PNG_READ_USER_TRANSFORM_SUPPORTED 611 # endif 612 # ifndef PNG_NO_READ_RGB_TO_GRAY 613 # define PNG_READ_RGB_TO_GRAY_SUPPORTED 614 # endif 615 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */ 616 617 #if !defined(PNG_NO_PROGRESSIVE_READ) && \ 618 !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive */ 619 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ 620 #endif /* about interlacing capability! You'll */ 621 /* still have interlacing unless you change the following line: */ 622 623 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */ 624 625 #ifndef PNG_NO_READ_COMPOSITE_NODIV 626 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ 627 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ 628 # endif 629 #endif 630 631 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 632 /* Deprecated, will be removed from version 2.0.0. 633 Use PNG_MNG_FEATURES_SUPPORTED instead. */ 634 #ifndef PNG_NO_READ_EMPTY_PLTE 635 # define PNG_READ_EMPTY_PLTE_SUPPORTED 636 #endif 637 #endif 638 639 #endif /* PNG_READ_SUPPORTED */ 640 641 #if defined(PNG_WRITE_SUPPORTED) 642 643 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ 644 !defined(PNG_NO_WRITE_TRANSFORMS) 645 # define PNG_WRITE_TRANSFORMS_SUPPORTED 646 #endif 647 648 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED 649 # ifndef PNG_NO_WRITE_SHIFT 650 # define PNG_WRITE_SHIFT_SUPPORTED 651 # endif 652 # ifndef PNG_NO_WRITE_PACK 653 # define PNG_WRITE_PACK_SUPPORTED 654 # endif 655 # ifndef PNG_NO_WRITE_BGR 656 # define PNG_WRITE_BGR_SUPPORTED 657 # endif 658 # ifndef PNG_NO_WRITE_SWAP 659 # define PNG_WRITE_SWAP_SUPPORTED 660 # endif 661 # ifndef PNG_NO_WRITE_PACKSWAP 662 # define PNG_WRITE_PACKSWAP_SUPPORTED 663 # endif 664 # ifndef PNG_NO_WRITE_INVERT 665 # define PNG_WRITE_INVERT_SUPPORTED 666 # endif 667 # ifndef PNG_NO_WRITE_FILLER 668 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ 669 # endif 670 # ifndef PNG_NO_WRITE_SWAP_ALPHA 671 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED 672 # endif 673 # ifndef PNG_NO_WRITE_INVERT_ALPHA 674 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED 675 # endif 676 # ifndef PNG_NO_WRITE_USER_TRANSFORM 677 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED 678 # endif 679 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ 680 681 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \ 682 !defined(PNG_WRITE_INTERLACING_SUPPORTED) 683 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant 684 encoders, but can cause trouble 685 if left undefined */ 686 #endif 687 688 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ 689 !defined(PNG_WRITE_WEIGHTED_FILTER) && \ 690 defined(PNG_FLOATING_POINT_SUPPORTED) 691 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED 692 #endif 693 694 #ifndef PNG_NO_WRITE_FLUSH 695 # define PNG_WRITE_FLUSH_SUPPORTED 696 #endif 697 698 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 699 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ 700 #ifndef PNG_NO_WRITE_EMPTY_PLTE 701 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED 702 #endif 703 #endif 704 705 #endif /* PNG_WRITE_SUPPORTED */ 706 707 #ifndef PNG_1_0_X 708 # ifndef PNG_NO_ERROR_NUMBERS 709 # define PNG_ERROR_NUMBERS_SUPPORTED 710 # endif 711 #endif /* PNG_1_0_X */ 712 713 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 714 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) 715 # ifndef PNG_NO_USER_TRANSFORM_PTR 716 # define PNG_USER_TRANSFORM_PTR_SUPPORTED 717 # endif 718 #endif 719 720 #ifndef PNG_NO_STDIO 721 # define PNG_TIME_RFC1123_SUPPORTED 722 #endif 723 724 /* This adds extra functions in pngget.c for accessing data from the 725 * info pointer (added in version 0.99) 726 * png_get_image_width() 727 * png_get_image_height() 728 * png_get_bit_depth() 729 * png_get_color_type() 730 * png_get_compression_type() 731 * png_get_filter_type() 732 * png_get_interlace_type() 733 * png_get_pixel_aspect_ratio() 734 * png_get_pixels_per_meter() 735 * png_get_x_offset_pixels() 736 * png_get_y_offset_pixels() 737 * png_get_x_offset_microns() 738 * png_get_y_offset_microns() 739 */ 740 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) 741 # define PNG_EASY_ACCESS_SUPPORTED 742 #endif 743 744 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 745 * and removed from version 1.2.20. The following will be removed 746 * from libpng-1.4.0 747 */ 748 749 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE) 750 # ifndef PNG_OPTIMIZED_CODE_SUPPORTED 751 # define PNG_OPTIMIZED_CODE_SUPPORTED 752 # endif 753 #endif 754 755 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE) && defined(__i386__) 756 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED 757 # define PNG_ASSEMBLER_CODE_SUPPORTED 758 # endif 759 760 # if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4) 761 /* work around 64-bit gcc compiler bugs in gcc-3.x */ 762 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 763 # define PNG_NO_MMX_CODE 764 # endif 765 # endif 766 767 # if defined(__APPLE__) 768 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 769 # define PNG_NO_MMX_CODE 770 # endif 771 # endif 772 773 # if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh)) 774 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 775 # define PNG_NO_MMX_CODE 776 # endif 777 # endif 778 779 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 780 # define PNG_MMX_CODE_SUPPORTED 781 # endif 782 783 #endif 784 /* end of obsolete code to be removed from libpng-1.4.0 */ 785 786 #if !defined(PNG_1_0_X) 787 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) 788 # define PNG_USER_MEM_SUPPORTED 789 #endif 790 #endif /* PNG_1_0_X */ 791 792 /* Added at libpng-1.2.6 */ 793 #if !defined(PNG_1_0_X) 794 #ifndef PNG_SET_USER_LIMITS_SUPPORTED 795 #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED) 796 # define PNG_SET_USER_LIMITS_SUPPORTED 797 #endif 798 #endif 799 #endif /* PNG_1_0_X */ 800 801 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter 802 * how large, set these limits to 0x7fffffffL 803 */ 804 #ifndef PNG_USER_WIDTH_MAX 805 # define PNG_USER_WIDTH_MAX 1000000L 806 #endif 807 #ifndef PNG_USER_HEIGHT_MAX 808 # define PNG_USER_HEIGHT_MAX 1000000L 809 #endif 810 811 /* Added at libpng-1.2.34 and 1.4.0 */ 812 #ifndef PNG_STRING_NEWLINE 813 #define PNG_STRING_NEWLINE "\n" 814 #endif 815 816 /* These are currently experimental features, define them if you want */ 817 818 /* very little testing */ 819 /* 820 #ifdef PNG_READ_SUPPORTED 821 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 822 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 823 # endif 824 #endif 825 */ 826 827 /* This is only for PowerPC big-endian and 680x0 systems */ 828 /* some testing */ 829 /* 830 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED 831 # define PNG_READ_BIG_ENDIAN_SUPPORTED 832 #endif 833 */ 834 835 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */ 836 /* 837 #define PNG_NO_POINTER_INDEXING 838 */ 839 840 /* These functions are turned off by default, as they will be phased out. */ 841 /* 842 #define PNG_USELESS_TESTS_SUPPORTED 843 #define PNG_CORRECT_PALETTE_SUPPORTED 844 */ 845 846 /* Any chunks you are not interested in, you can undef here. The 847 * ones that allocate memory may be expecially important (hIST, 848 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info 849 * a bit smaller. 850 */ 851 852 #if defined(PNG_READ_SUPPORTED) && \ 853 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 854 !defined(PNG_NO_READ_ANCILLARY_CHUNKS) 855 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 856 #endif 857 858 #if defined(PNG_WRITE_SUPPORTED) && \ 859 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 860 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) 861 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 862 #endif 863 864 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 865 866 #ifdef PNG_NO_READ_TEXT 867 # define PNG_NO_READ_iTXt 868 # define PNG_NO_READ_tEXt 869 # define PNG_NO_READ_zTXt 870 #endif 871 #ifndef PNG_NO_READ_bKGD 872 # define PNG_READ_bKGD_SUPPORTED 873 # define PNG_bKGD_SUPPORTED 874 #endif 875 #ifndef PNG_NO_READ_cHRM 876 # define PNG_READ_cHRM_SUPPORTED 877 # define PNG_cHRM_SUPPORTED 878 #endif 879 #ifndef PNG_NO_READ_gAMA 880 # define PNG_READ_gAMA_SUPPORTED 881 # define PNG_gAMA_SUPPORTED 882 #endif 883 #ifndef PNG_NO_READ_hIST 884 # define PNG_READ_hIST_SUPPORTED 885 # define PNG_hIST_SUPPORTED 886 #endif 887 #ifndef PNG_NO_READ_iCCP 888 # define PNG_READ_iCCP_SUPPORTED 889 # define PNG_iCCP_SUPPORTED 890 #endif 891 #ifndef PNG_NO_READ_iTXt 892 # ifndef PNG_READ_iTXt_SUPPORTED 893 # define PNG_READ_iTXt_SUPPORTED 894 # endif 895 # ifndef PNG_iTXt_SUPPORTED 896 # define PNG_iTXt_SUPPORTED 897 # endif 898 #endif 899 #ifndef PNG_NO_READ_oFFs 900 # define PNG_READ_oFFs_SUPPORTED 901 # define PNG_oFFs_SUPPORTED 902 #endif 903 #ifndef PNG_NO_READ_pCAL 904 # define PNG_READ_pCAL_SUPPORTED 905 # define PNG_pCAL_SUPPORTED 906 #endif 907 #ifndef PNG_NO_READ_sCAL 908 # define PNG_READ_sCAL_SUPPORTED 909 # define PNG_sCAL_SUPPORTED 910 #endif 911 #ifndef PNG_NO_READ_pHYs 912 # define PNG_READ_pHYs_SUPPORTED 913 # define PNG_pHYs_SUPPORTED 914 #endif 915 #ifndef PNG_NO_READ_sBIT 916 # define PNG_READ_sBIT_SUPPORTED 917 # define PNG_sBIT_SUPPORTED 918 #endif 919 #ifndef PNG_NO_READ_sPLT 920 # define PNG_READ_sPLT_SUPPORTED 921 # define PNG_sPLT_SUPPORTED 922 #endif 923 #ifndef PNG_NO_READ_sRGB 924 # define PNG_READ_sRGB_SUPPORTED 925 # define PNG_sRGB_SUPPORTED 926 #endif 927 #ifndef PNG_NO_READ_tEXt 928 # define PNG_READ_tEXt_SUPPORTED 929 # define PNG_tEXt_SUPPORTED 930 #endif 931 #ifndef PNG_NO_READ_tIME 932 # define PNG_READ_tIME_SUPPORTED 933 # define PNG_tIME_SUPPORTED 934 #endif 935 #ifndef PNG_NO_READ_tRNS 936 # define PNG_READ_tRNS_SUPPORTED 937 # define PNG_tRNS_SUPPORTED 938 #endif 939 #ifndef PNG_NO_READ_zTXt 940 # define PNG_READ_zTXt_SUPPORTED 941 # define PNG_zTXt_SUPPORTED 942 #endif 943 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS 944 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED 945 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 946 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 947 # endif 948 # ifndef PNG_NO_HANDLE_AS_UNKNOWN 949 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 950 # endif 951 #endif 952 #if !defined(PNG_NO_READ_USER_CHUNKS) && \ 953 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) 954 # define PNG_READ_USER_CHUNKS_SUPPORTED 955 # define PNG_USER_CHUNKS_SUPPORTED 956 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS 957 # undef PNG_NO_READ_UNKNOWN_CHUNKS 958 # endif 959 # ifdef PNG_NO_HANDLE_AS_UNKNOWN 960 # undef PNG_NO_HANDLE_AS_UNKNOWN 961 # endif 962 #endif 963 #ifndef PNG_NO_READ_OPT_PLTE 964 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ 965 #endif /* optional PLTE chunk in RGB and RGBA images */ 966 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ 967 defined(PNG_READ_zTXt_SUPPORTED) 968 # define PNG_READ_TEXT_SUPPORTED 969 # define PNG_TEXT_SUPPORTED 970 #endif 971 972 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ 973 974 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 975 976 #ifdef PNG_NO_WRITE_TEXT 977 # define PNG_NO_WRITE_iTXt 978 # define PNG_NO_WRITE_tEXt 979 # define PNG_NO_WRITE_zTXt 980 #endif 981 #ifndef PNG_NO_WRITE_bKGD 982 # define PNG_WRITE_bKGD_SUPPORTED 983 # ifndef PNG_bKGD_SUPPORTED 984 # define PNG_bKGD_SUPPORTED 985 # endif 986 #endif 987 #ifndef PNG_NO_WRITE_cHRM 988 # define PNG_WRITE_cHRM_SUPPORTED 989 # ifndef PNG_cHRM_SUPPORTED 990 # define PNG_cHRM_SUPPORTED 991 # endif 992 #endif 993 #ifndef PNG_NO_WRITE_gAMA 994 # define PNG_WRITE_gAMA_SUPPORTED 995 # ifndef PNG_gAMA_SUPPORTED 996 # define PNG_gAMA_SUPPORTED 997 # endif 998 #endif 999 #ifndef PNG_NO_WRITE_hIST 1000 # define PNG_WRITE_hIST_SUPPORTED 1001 # ifndef PNG_hIST_SUPPORTED 1002 # define PNG_hIST_SUPPORTED 1003 # endif 1004 #endif 1005 #ifndef PNG_NO_WRITE_iCCP 1006 # define PNG_WRITE_iCCP_SUPPORTED 1007 # ifndef PNG_iCCP_SUPPORTED 1008 # define PNG_iCCP_SUPPORTED 1009 # endif 1010 #endif 1011 #ifndef PNG_NO_WRITE_iTXt 1012 # ifndef PNG_WRITE_iTXt_SUPPORTED 1013 # define PNG_WRITE_iTXt_SUPPORTED 1014 # endif 1015 # ifndef PNG_iTXt_SUPPORTED 1016 # define PNG_iTXt_SUPPORTED 1017 # endif 1018 #endif 1019 #ifndef PNG_NO_WRITE_oFFs 1020 # define PNG_WRITE_oFFs_SUPPORTED 1021 # ifndef PNG_oFFs_SUPPORTED 1022 # define PNG_oFFs_SUPPORTED 1023 # endif 1024 #endif 1025 #ifndef PNG_NO_WRITE_pCAL 1026 # define PNG_WRITE_pCAL_SUPPORTED 1027 # ifndef PNG_pCAL_SUPPORTED 1028 # define PNG_pCAL_SUPPORTED 1029 # endif 1030 #endif 1031 #ifndef PNG_NO_WRITE_sCAL 1032 # define PNG_WRITE_sCAL_SUPPORTED 1033 # ifndef PNG_sCAL_SUPPORTED 1034 # define PNG_sCAL_SUPPORTED 1035 # endif 1036 #endif 1037 #ifndef PNG_NO_WRITE_pHYs 1038 # define PNG_WRITE_pHYs_SUPPORTED 1039 # ifndef PNG_pHYs_SUPPORTED 1040 # define PNG_pHYs_SUPPORTED 1041 # endif 1042 #endif 1043 #ifndef PNG_NO_WRITE_sBIT 1044 # define PNG_WRITE_sBIT_SUPPORTED 1045 # ifndef PNG_sBIT_SUPPORTED 1046 # define PNG_sBIT_SUPPORTED 1047 # endif 1048 #endif 1049 #ifndef PNG_NO_WRITE_sPLT 1050 # define PNG_WRITE_sPLT_SUPPORTED 1051 # ifndef PNG_sPLT_SUPPORTED 1052 # define PNG_sPLT_SUPPORTED 1053 # endif 1054 #endif 1055 #ifndef PNG_NO_WRITE_sRGB 1056 # define PNG_WRITE_sRGB_SUPPORTED 1057 # ifndef PNG_sRGB_SUPPORTED 1058 # define PNG_sRGB_SUPPORTED 1059 # endif 1060 #endif 1061 #ifndef PNG_NO_WRITE_tEXt 1062 # define PNG_WRITE_tEXt_SUPPORTED 1063 # ifndef PNG_tEXt_SUPPORTED 1064 # define PNG_tEXt_SUPPORTED 1065 # endif 1066 #endif 1067 #ifndef PNG_NO_WRITE_tIME 1068 # define PNG_WRITE_tIME_SUPPORTED 1069 # ifndef PNG_tIME_SUPPORTED 1070 # define PNG_tIME_SUPPORTED 1071 # endif 1072 #endif 1073 #ifndef PNG_NO_WRITE_tRNS 1074 # define PNG_WRITE_tRNS_SUPPORTED 1075 # ifndef PNG_tRNS_SUPPORTED 1076 # define PNG_tRNS_SUPPORTED 1077 # endif 1078 #endif 1079 #ifndef PNG_NO_WRITE_zTXt 1080 # define PNG_WRITE_zTXt_SUPPORTED 1081 # ifndef PNG_zTXt_SUPPORTED 1082 # define PNG_zTXt_SUPPORTED 1083 # endif 1084 #endif 1085 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS 1086 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1087 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1088 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 1089 # endif 1090 # ifndef PNG_NO_HANDLE_AS_UNKNOWN 1091 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1092 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1093 # endif 1094 # endif 1095 #endif 1096 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ 1097 defined(PNG_WRITE_zTXt_SUPPORTED) 1098 # define PNG_WRITE_TEXT_SUPPORTED 1099 # ifndef PNG_TEXT_SUPPORTED 1100 # define PNG_TEXT_SUPPORTED 1101 # endif 1102 #endif 1103 1104 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ 1105 1106 /* Turn this off to disable png_read_png() and 1107 * png_write_png() and leave the row_pointers member 1108 * out of the info structure. 1109 */ 1110 #ifndef PNG_NO_INFO_IMAGE 1111 # define PNG_INFO_IMAGE_SUPPORTED 1112 #endif 1113 1114 /* need the time information for reading tIME chunks */ 1115 #if defined(PNG_tIME_SUPPORTED) 1116 # if !defined(_WIN32_WCE) 1117 /* "time.h" functions are not supported on WindowsCE */ 1118 # include <time.h> 1119 # endif 1120 #endif 1121 1122 /* Some typedefs to get us started. These should be safe on most of the 1123 * common platforms. The typedefs should be at least as large as the 1124 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they 1125 * don't have to be exactly that size. Some compilers dislike passing 1126 * unsigned shorts as function parameters, so you may be better off using 1127 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may 1128 * want to have unsigned int for png_uint_32 instead of unsigned long. 1129 */ 1130 1131 typedef unsigned long png_uint_32; 1132 typedef long png_int_32; 1133 typedef unsigned short png_uint_16; 1134 typedef short png_int_16; 1135 typedef unsigned char png_byte; 1136 1137 /* This is usually size_t. It is typedef'ed just in case you need it to 1138 change (I'm not sure if you will or not, so I thought I'd be safe) */ 1139 #ifdef PNG_SIZE_T 1140 typedef PNG_SIZE_T png_size_t; 1141 # define png_sizeof(x) png_convert_size(sizeof(x)) 1142 #else 1143 typedef size_t png_size_t; 1144 # define png_sizeof(x) sizeof(x) 1145 #endif 1146 1147 /* The following is needed for medium model support. It cannot be in the 1148 * PNG_INTERNAL section. Needs modification for other compilers besides 1149 * MSC. Model independent support declares all arrays and pointers to be 1150 * large using the far keyword. The zlib version used must also support 1151 * model independent data. As of version zlib 1.0.4, the necessary changes 1152 * have been made in zlib. The USE_FAR_KEYWORD define triggers other 1153 * changes that are needed. (Tim Wegner) 1154 */ 1155 1156 /* Separate compiler dependencies (problem here is that zlib.h always 1157 defines FAR. (SJT) */ 1158 #ifdef __BORLANDC__ 1159 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) 1160 # define LDATA 1 1161 # else 1162 # define LDATA 0 1163 # endif 1164 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ 1165 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) 1166 # define PNG_MAX_MALLOC_64K 1167 # if (LDATA != 1) 1168 # ifndef FAR 1169 # define FAR __far 1170 # endif 1171 # define USE_FAR_KEYWORD 1172 # endif /* LDATA != 1 */ 1173 /* Possibly useful for moving data out of default segment. 1174 * Uncomment it if you want. Could also define FARDATA as 1175 * const if your compiler supports it. (SJT) 1176 # define FARDATA FAR 1177 */ 1178 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */ 1179 #endif /* __BORLANDC__ */ 1180 1181 1182 /* Suggest testing for specific compiler first before testing for 1183 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, 1184 * making reliance oncertain keywords suspect. (SJT) 1185 */ 1186 1187 /* MSC Medium model */ 1188 #if defined(FAR) 1189 # if defined(M_I86MM) 1190 # define USE_FAR_KEYWORD 1191 # define FARDATA FAR 1192 # include <dos.h> 1193 # endif 1194 #endif 1195 1196 /* SJT: default case */ 1197 #ifndef FAR 1198 # define FAR 1199 #endif 1200 1201 /* At this point FAR is always defined */ 1202 #ifndef FARDATA 1203 # define FARDATA 1204 #endif 1205 1206 /* Typedef for floating-point numbers that are converted 1207 to fixed-point with a multiple of 100,000, e.g., int_gamma */ 1208 typedef png_int_32 png_fixed_point; 1209 1210 /* Add typedefs for pointers */ 1211 typedef void FAR * png_voidp; 1212 typedef png_byte FAR * png_bytep; 1213 typedef png_uint_32 FAR * png_uint_32p; 1214 typedef png_int_32 FAR * png_int_32p; 1215 typedef png_uint_16 FAR * png_uint_16p; 1216 typedef png_int_16 FAR * png_int_16p; 1217 typedef PNG_CONST char FAR * png_const_charp; 1218 typedef char FAR * png_charp; 1219 typedef png_fixed_point FAR * png_fixed_point_p; 1220 1221 #ifndef PNG_NO_STDIO 1222 #if defined(_WIN32_WCE) 1223 typedef HANDLE png_FILE_p; 1224 #else 1225 typedef FILE * png_FILE_p; 1226 #endif 1227 #endif 1228 1229 #ifdef PNG_FLOATING_POINT_SUPPORTED 1230 typedef double FAR * png_doublep; 1231 #endif 1232 1233 /* Pointers to pointers; i.e. arrays */ 1234 typedef png_byte FAR * FAR * png_bytepp; 1235 typedef png_uint_32 FAR * FAR * png_uint_32pp; 1236 typedef png_int_32 FAR * FAR * png_int_32pp; 1237 typedef png_uint_16 FAR * FAR * png_uint_16pp; 1238 typedef png_int_16 FAR * FAR * png_int_16pp; 1239 typedef PNG_CONST char FAR * FAR * png_const_charpp; 1240 typedef char FAR * FAR * png_charpp; 1241 typedef png_fixed_point FAR * FAR * png_fixed_point_pp; 1242 #ifdef PNG_FLOATING_POINT_SUPPORTED 1243 typedef double FAR * FAR * png_doublepp; 1244 #endif 1245 1246 /* Pointers to pointers to pointers; i.e., pointer to array */ 1247 typedef char FAR * FAR * FAR * png_charppp; 1248 1249 #if defined(PNG_1_0_X) || defined(PNG_1_2_X) 1250 /* SPC - Is this stuff deprecated? */ 1251 /* It'll be removed as of libpng-1.3.0 - GR-P */ 1252 /* libpng typedefs for types in zlib. If zlib changes 1253 * or another compression library is used, then change these. 1254 * Eliminates need to change all the source files. 1255 */ 1256 typedef charf * png_zcharp; 1257 typedef charf * FAR * png_zcharpp; 1258 typedef z_stream FAR * png_zstreamp; 1259 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */ 1260 1261 /* 1262 * Define PNG_BUILD_DLL if the module being built is a Windows 1263 * LIBPNG DLL. 1264 * 1265 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. 1266 * It is equivalent to Microsoft predefined macro _DLL that is 1267 * automatically defined when you compile using the share 1268 * version of the CRT (C Run-Time library) 1269 * 1270 * The cygwin mods make this behavior a little different: 1271 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin 1272 * Define PNG_STATIC if you are building a static library for use with cygwin, 1273 * -or- if you are building an application that you want to link to the 1274 * static library. 1275 * PNG_USE_DLL is defined by default (no user action needed) unless one of 1276 * the other flags is defined. 1277 */ 1278 1279 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) 1280 # define PNG_DLL 1281 #endif 1282 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. 1283 * When building a static lib, default to no GLOBAL ARRAYS, but allow 1284 * command-line override 1285 */ 1286 #if defined(__CYGWIN__) 1287 # if !defined(PNG_STATIC) 1288 # if defined(PNG_USE_GLOBAL_ARRAYS) 1289 # undef PNG_USE_GLOBAL_ARRAYS 1290 # endif 1291 # if !defined(PNG_USE_LOCAL_ARRAYS) 1292 # define PNG_USE_LOCAL_ARRAYS 1293 # endif 1294 # else 1295 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) 1296 # if defined(PNG_USE_GLOBAL_ARRAYS) 1297 # undef PNG_USE_GLOBAL_ARRAYS 1298 # endif 1299 # endif 1300 # endif 1301 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1302 # define PNG_USE_LOCAL_ARRAYS 1303 # endif 1304 #endif 1305 1306 /* Do not use global arrays (helps with building DLL's) 1307 * They are no longer used in libpng itself, since version 1.0.5c, 1308 * but might be required for some pre-1.0.5c applications. 1309 */ 1310 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1311 # if defined(PNG_NO_GLOBAL_ARRAYS) || \ 1312 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER) 1313 # define PNG_USE_LOCAL_ARRAYS 1314 # else 1315 # define PNG_USE_GLOBAL_ARRAYS 1316 # endif 1317 #endif 1318 1319 #if defined(__CYGWIN__) 1320 # undef PNGAPI 1321 # define PNGAPI __cdecl 1322 # undef PNG_IMPEXP 1323 # define PNG_IMPEXP 1324 #endif 1325 1326 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", 1327 * you may get warnings regarding the linkage of png_zalloc and png_zfree. 1328 * Don't ignore those warnings; you must also reset the default calling 1329 * convention in your compiler to match your PNGAPI, and you must build 1330 * zlib and your applications the same way you build libpng. 1331 */ 1332 1333 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF) 1334 # ifndef PNG_NO_MODULEDEF 1335 # define PNG_NO_MODULEDEF 1336 # endif 1337 #endif 1338 1339 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) 1340 # define PNG_IMPEXP 1341 #endif 1342 1343 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ 1344 (( defined(_Windows) || defined(_WINDOWS) || \ 1345 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) 1346 1347 # ifndef PNGAPI 1348 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) 1349 # define PNGAPI __cdecl 1350 # else 1351 # define PNGAPI _cdecl 1352 # endif 1353 # endif 1354 1355 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ 1356 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) 1357 # define PNG_IMPEXP 1358 # endif 1359 1360 # if !defined(PNG_IMPEXP) 1361 1362 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol 1363 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol 1364 1365 /* Borland/Microsoft */ 1366 # if defined(_MSC_VER) || defined(__BORLANDC__) 1367 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) 1368 # define PNG_EXPORT PNG_EXPORT_TYPE1 1369 # else 1370 # define PNG_EXPORT PNG_EXPORT_TYPE2 1371 # if defined(PNG_BUILD_DLL) 1372 # define PNG_IMPEXP __export 1373 # else 1374 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in 1375 VC++ */ 1376 # endif /* Exists in Borland C++ for 1377 C++ classes (== huge) */ 1378 # endif 1379 # endif 1380 1381 # if !defined(PNG_IMPEXP) 1382 # if defined(PNG_BUILD_DLL) 1383 # define PNG_IMPEXP __declspec(dllexport) 1384 # else 1385 # define PNG_IMPEXP __declspec(dllimport) 1386 # endif 1387 # endif 1388 # endif /* PNG_IMPEXP */ 1389 #else /* !(DLL || non-cygwin WINDOWS) */ 1390 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 1391 # ifndef PNGAPI 1392 # define PNGAPI _System 1393 # endif 1394 # else 1395 # if 0 /* ... other platforms, with other meanings */ 1396 # endif 1397 # endif 1398 #endif 1399 1400 #ifndef PNGAPI 1401 # define PNGAPI 1402 #endif 1403 #ifndef PNG_IMPEXP 1404 # define PNG_IMPEXP 1405 #endif 1406 1407 #ifdef PNG_BUILDSYMS 1408 # ifndef PNG_EXPORT 1409 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END 1410 # endif 1411 # ifdef PNG_USE_GLOBAL_ARRAYS 1412 # ifndef PNG_EXPORT_VAR 1413 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT 1414 # endif 1415 # endif 1416 #endif 1417 1418 #ifndef PNG_EXPORT 1419 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol 1420 #endif 1421 1422 #ifdef PNG_USE_GLOBAL_ARRAYS 1423 # ifndef PNG_EXPORT_VAR 1424 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type 1425 # endif 1426 #endif 1427 1428 /* User may want to use these so they are not in PNG_INTERNAL. Any library 1429 * functions that are passed far data must be model independent. 1430 */ 1431 1432 #ifndef PNG_ABORT 1433 # define PNG_ABORT() abort() 1434 #endif 1435 1436 #ifdef PNG_SETJMP_SUPPORTED 1437 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) 1438 #else 1439 # define png_jmpbuf(png_ptr) \ 1440 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) 1441 #endif 1442 1443 #if defined(USE_FAR_KEYWORD) /* memory model independent fns */ 1444 /* use this to make far-to-near assignments */ 1445 # define CHECK 1 1446 # define NOCHECK 0 1447 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) 1448 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) 1449 # define png_snprintf _fsnprintf /* Added to v 1.2.19 */ 1450 # define png_strlen _fstrlen 1451 # define png_memcmp _fmemcmp /* SJT: added */ 1452 # define png_memcpy _fmemcpy 1453 # define png_memset _fmemset 1454 #else /* use the usual functions */ 1455 # define CVT_PTR(ptr) (ptr) 1456 # define CVT_PTR_NOCHECK(ptr) (ptr) 1457 # ifndef PNG_NO_SNPRINTF 1458 # ifdef _MSC_VER 1459 # define png_snprintf _snprintf /* Added to v 1.2.19 */ 1460 # define png_snprintf2 _snprintf 1461 # define png_snprintf6 _snprintf 1462 # else 1463 # define png_snprintf snprintf /* Added to v 1.2.19 */ 1464 # define png_snprintf2 snprintf 1465 # define png_snprintf6 snprintf 1466 # endif 1467 # else 1468 /* You don't have or don't want to use snprintf(). Caution: Using 1469 * sprintf instead of snprintf exposes your application to accidental 1470 * or malevolent buffer overflows. If you don't have snprintf() 1471 * as a general rule you should provide one (you can get one from 1472 * Portable OpenSSH). */ 1473 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1) 1474 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2) 1475 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \ 1476 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6) 1477 # endif 1478 # define png_strlen strlen 1479 # define png_memcmp memcmp /* SJT: added */ 1480 # define png_memcpy memcpy 1481 # define png_memset memset 1482 #endif 1483 /* End of memory model independent support */ 1484 1485 /* Just a little check that someone hasn't tried to define something 1486 * contradictory. 1487 */ 1488 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) 1489 # undef PNG_ZBUF_SIZE 1490 # define PNG_ZBUF_SIZE 65536L 1491 #endif 1492 1493 /* Added at libpng-1.2.8 */ 1494 #endif /* PNG_VERSION_INFO_ONLY */ 1495 1496 #endif /* PNGCONF_H */ 1497