1 2 /* pngconf.h - machine configurable file for libpng 3 * 4 * libpng version 1.2.19 - August 18, 2007 5 * For conditions of distribution and use, see copyright notice in png.h 6 * Copyright (c) 1998-2007 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 */ 79 #ifndef PNG_NO_WARN_UNINITIALIZED_ROW 80 # ifndef PNG_WARN_UNINITIALIZED_ROW 81 # define PNG_WARN_UNINITIALIZED_ROW 1 /* 0: warning; 1: error */ 82 # endif 83 #endif 84 /* End of material added at libpng-1.2.19 */ 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 # ifdef PNG_DEBUG 237 # undef PNG_DEBUG 238 # endif 239 #endif 240 241 #ifdef PNG_BUILD_DLL 242 # ifndef PNG_CONSOLE_IO_SUPPORTED 243 # ifndef PNG_NO_CONSOLE_IO 244 # define PNG_NO_CONSOLE_IO 245 # endif 246 # endif 247 #endif 248 249 # ifdef PNG_NO_STDIO 250 # ifndef PNG_NO_CONSOLE_IO 251 # define PNG_NO_CONSOLE_IO 252 # endif 253 # ifdef PNG_DEBUG 254 # if (PNG_DEBUG > 0) 255 # include <stdio.h> 256 # endif 257 # endif 258 # else 259 # if !defined(_WIN32_WCE) 260 /* "stdio.h" functions are not supported on WindowsCE */ 261 # include <stdio.h> 262 # endif 263 # endif 264 265 /* This macro protects us against machines that don't have function 266 * prototypes (ie K&R style headers). If your compiler does not handle 267 * function prototypes, define this macro and use the included ansi2knr. 268 * I've always been able to use _NO_PROTO as the indicator, but you may 269 * need to drag the empty declaration out in front of here, or change the 270 * ifdef to suit your own needs. 271 */ 272 #ifndef PNGARG 273 274 #ifdef OF /* zlib prototype munger */ 275 # define PNGARG(arglist) OF(arglist) 276 #else 277 278 #ifdef _NO_PROTO 279 # define PNGARG(arglist) () 280 # ifndef PNG_TYPECAST_NULL 281 # define PNG_TYPECAST_NULL 282 # endif 283 #else 284 # define PNGARG(arglist) arglist 285 #endif /* _NO_PROTO */ 286 287 288 #endif /* OF */ 289 290 #endif /* PNGARG */ 291 292 /* Try to determine if we are compiling on a Mac. Note that testing for 293 * just __MWERKS__ is not good enough, because the Codewarrior is now used 294 * on non-Mac platforms. 295 */ 296 #ifndef MACOS 297 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ 298 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) 299 # define MACOS 300 # endif 301 #endif 302 303 /* enough people need this for various reasons to include it here */ 304 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) 305 # include <sys/types.h> 306 #endif 307 308 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) 309 # define PNG_SETJMP_SUPPORTED 310 #endif 311 312 #ifdef PNG_SETJMP_SUPPORTED 313 /* This is an attempt to force a single setjmp behaviour on Linux. If 314 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. 315 */ 316 317 # ifdef __linux__ 318 # ifdef _BSD_SOURCE 319 # define PNG_SAVE_BSD_SOURCE 320 # undef _BSD_SOURCE 321 # endif 322 # ifdef _SETJMP_H 323 /* If you encounter a compiler error here, see the explanation 324 * near the end of INSTALL. 325 */ 326 __png.h__ already includes setjmp.h; 327 __dont__ include it again.; 328 # endif 329 # endif /* __linux__ */ 330 331 /* include setjmp.h for error handling */ 332 # include <setjmp.h> 333 334 # ifdef __linux__ 335 # ifdef PNG_SAVE_BSD_SOURCE 336 # define _BSD_SOURCE 337 # undef PNG_SAVE_BSD_SOURCE 338 # endif 339 # endif /* __linux__ */ 340 #endif /* PNG_SETJMP_SUPPORTED */ 341 342 #ifdef BSD 343 # include <strings.h> 344 #else 345 # include <string.h> 346 #endif 347 348 /* Other defines for things like memory and the like can go here. */ 349 #ifdef PNG_INTERNAL 350 351 #include <stdlib.h> 352 353 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which 354 * aren't usually used outside the library (as far as I know), so it is 355 * debatable if they should be exported at all. In the future, when it is 356 * possible to have run-time registry of chunk-handling functions, some of 357 * these will be made available again. 358 #define PNG_EXTERN extern 359 */ 360 #define PNG_EXTERN 361 362 /* Other defines specific to compilers can go here. Try to keep 363 * them inside an appropriate ifdef/endif pair for portability. 364 */ 365 366 #if defined(PNG_FLOATING_POINT_SUPPORTED) 367 # if defined(MACOS) 368 /* We need to check that <math.h> hasn't already been included earlier 369 * as it seems it doesn't agree with <fp.h>, yet we should really use 370 * <fp.h> if possible. 371 */ 372 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) 373 # include <fp.h> 374 # endif 375 # else 376 # include <math.h> 377 # endif 378 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) 379 /* Amiga SAS/C: We must include builtin FPU functions when compiling using 380 * MATH=68881 381 */ 382 # include <m68881.h> 383 # endif 384 #endif 385 386 /* Codewarrior on NT has linking problems without this. */ 387 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) 388 # define PNG_ALWAYS_EXTERN 389 #endif 390 391 /* This provides the non-ANSI (far) memory allocation routines. */ 392 #if defined(__TURBOC__) && defined(__MSDOS__) 393 # include <mem.h> 394 # include <alloc.h> 395 #endif 396 397 /* I have no idea why is this necessary... */ 398 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ 399 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) 400 # include <malloc.h> 401 #endif 402 403 /* This controls how fine the dithering gets. As this allocates 404 * a largish chunk of memory (32K), those who are not as concerned 405 * with dithering quality can decrease some or all of these. 406 */ 407 #ifndef PNG_DITHER_RED_BITS 408 # define PNG_DITHER_RED_BITS 5 409 #endif 410 #ifndef PNG_DITHER_GREEN_BITS 411 # define PNG_DITHER_GREEN_BITS 5 412 #endif 413 #ifndef PNG_DITHER_BLUE_BITS 414 # define PNG_DITHER_BLUE_BITS 5 415 #endif 416 417 /* This controls how fine the gamma correction becomes when you 418 * are only interested in 8 bits anyway. Increasing this value 419 * results in more memory being used, and more pow() functions 420 * being called to fill in the gamma tables. Don't set this value 421 * less then 8, and even that may not work (I haven't tested it). 422 */ 423 424 #ifndef PNG_MAX_GAMMA_8 425 # define PNG_MAX_GAMMA_8 11 426 #endif 427 428 /* This controls how much a difference in gamma we can tolerate before 429 * we actually start doing gamma conversion. 430 */ 431 #ifndef PNG_GAMMA_THRESHOLD 432 # define PNG_GAMMA_THRESHOLD 0.05 433 #endif 434 435 #endif /* PNG_INTERNAL */ 436 437 /* The following uses const char * instead of char * for error 438 * and warning message functions, so some compilers won't complain. 439 * If you do not want to use const, define PNG_NO_CONST here. 440 */ 441 442 #ifndef PNG_NO_CONST 443 # define PNG_CONST const 444 #else 445 # define PNG_CONST 446 #endif 447 448 /* The following defines give you the ability to remove code from the 449 * library that you will not be using. I wish I could figure out how to 450 * automate this, but I can't do that without making it seriously hard 451 * on the users. So if you are not using an ability, change the #define 452 * to and #undef, and that part of the library will not be compiled. If 453 * your linker can't find a function, you may want to make sure the 454 * ability is defined here. Some of these depend upon some others being 455 * defined. I haven't figured out all the interactions here, so you may 456 * have to experiment awhile to get everything to compile. If you are 457 * creating or using a shared library, you probably shouldn't touch this, 458 * as it will affect the size of the structures, and this will cause bad 459 * things to happen if the library and/or application ever change. 460 */ 461 462 /* Any features you will not be using can be undef'ed here */ 463 464 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user 465 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS 466 * on the compile line, then pick and choose which ones to define without 467 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED 468 * if you only want to have a png-compliant reader/writer but don't need 469 * any of the extra transformations. This saves about 80 kbytes in a 470 * typical installation of the library. (PNG_NO_* form added in version 471 * 1.0.1c, for consistency) 472 */ 473 474 /* The size of the png_text structure changed in libpng-1.0.6 when 475 * iTXt support was added. iTXt support was turned off by default through 476 * libpng-1.2.x, to support old apps that malloc the png_text structure 477 * instead of calling png_set_text() and letting libpng malloc it. It 478 * was turned on by default in libpng-1.3.0. 479 */ 480 481 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 482 # ifndef PNG_NO_iTXt_SUPPORTED 483 # define PNG_NO_iTXt_SUPPORTED 484 # endif 485 # ifndef PNG_NO_READ_iTXt 486 # define PNG_NO_READ_iTXt 487 # endif 488 # ifndef PNG_NO_WRITE_iTXt 489 # define PNG_NO_WRITE_iTXt 490 # endif 491 #endif 492 493 #if !defined(PNG_NO_iTXt_SUPPORTED) 494 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) 495 # define PNG_READ_iTXt 496 # endif 497 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) 498 # define PNG_WRITE_iTXt 499 # endif 500 #endif 501 502 /* The following support, added after version 1.0.0, can be turned off here en 503 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility 504 * with old applications that require the length of png_struct and png_info 505 * to remain unchanged. 506 */ 507 508 #ifdef PNG_LEGACY_SUPPORTED 509 # define PNG_NO_FREE_ME 510 # define PNG_NO_READ_UNKNOWN_CHUNKS 511 # define PNG_NO_WRITE_UNKNOWN_CHUNKS 512 # define PNG_NO_READ_USER_CHUNKS 513 # define PNG_NO_READ_iCCP 514 # define PNG_NO_WRITE_iCCP 515 # define PNG_NO_READ_iTXt 516 # define PNG_NO_WRITE_iTXt 517 # define PNG_NO_READ_sCAL 518 # define PNG_NO_WRITE_sCAL 519 # define PNG_NO_READ_sPLT 520 # define PNG_NO_WRITE_sPLT 521 # define PNG_NO_INFO_IMAGE 522 # define PNG_NO_READ_RGB_TO_GRAY 523 # define PNG_NO_READ_USER_TRANSFORM 524 # define PNG_NO_WRITE_USER_TRANSFORM 525 # define PNG_NO_USER_MEM 526 # define PNG_NO_READ_EMPTY_PLTE 527 # define PNG_NO_MNG_FEATURES 528 # define PNG_NO_FIXED_POINT_SUPPORTED 529 #endif 530 531 /* Ignore attempt to turn off both floating and fixed point support */ 532 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ 533 !defined(PNG_NO_FIXED_POINT_SUPPORTED) 534 # define PNG_FIXED_POINT_SUPPORTED 535 #endif 536 537 #ifndef PNG_NO_FREE_ME 538 # define PNG_FREE_ME_SUPPORTED 539 #endif 540 541 #if defined(PNG_READ_SUPPORTED) 542 543 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ 544 !defined(PNG_NO_READ_TRANSFORMS) 545 # define PNG_READ_TRANSFORMS_SUPPORTED 546 #endif 547 548 #ifdef PNG_READ_TRANSFORMS_SUPPORTED 549 # ifndef PNG_NO_READ_EXPAND 550 # define PNG_READ_EXPAND_SUPPORTED 551 # endif 552 # ifndef PNG_NO_READ_SHIFT 553 # define PNG_READ_SHIFT_SUPPORTED 554 # endif 555 # ifndef PNG_NO_READ_PACK 556 # define PNG_READ_PACK_SUPPORTED 557 # endif 558 # ifndef PNG_NO_READ_BGR 559 # define PNG_READ_BGR_SUPPORTED 560 # endif 561 # ifndef PNG_NO_READ_SWAP 562 # define PNG_READ_SWAP_SUPPORTED 563 # endif 564 # ifndef PNG_NO_READ_PACKSWAP 565 # define PNG_READ_PACKSWAP_SUPPORTED 566 # endif 567 # ifndef PNG_NO_READ_INVERT 568 # define PNG_READ_INVERT_SUPPORTED 569 # endif 570 # ifndef PNG_NO_READ_DITHER 571 # define PNG_READ_DITHER_SUPPORTED 572 # endif 573 # ifndef PNG_NO_READ_BACKGROUND 574 # define PNG_READ_BACKGROUND_SUPPORTED 575 # endif 576 # ifndef PNG_NO_READ_16_TO_8 577 # define PNG_READ_16_TO_8_SUPPORTED 578 # endif 579 # ifndef PNG_NO_READ_FILLER 580 # define PNG_READ_FILLER_SUPPORTED 581 # endif 582 # ifndef PNG_NO_READ_GAMMA 583 # define PNG_READ_GAMMA_SUPPORTED 584 # endif 585 # ifndef PNG_NO_READ_GRAY_TO_RGB 586 # define PNG_READ_GRAY_TO_RGB_SUPPORTED 587 # endif 588 # ifndef PNG_NO_READ_SWAP_ALPHA 589 # define PNG_READ_SWAP_ALPHA_SUPPORTED 590 # endif 591 # ifndef PNG_NO_READ_INVERT_ALPHA 592 # define PNG_READ_INVERT_ALPHA_SUPPORTED 593 # endif 594 # ifndef PNG_NO_READ_STRIP_ALPHA 595 # define PNG_READ_STRIP_ALPHA_SUPPORTED 596 # endif 597 # ifndef PNG_NO_READ_USER_TRANSFORM 598 # define PNG_READ_USER_TRANSFORM_SUPPORTED 599 # endif 600 # ifndef PNG_NO_READ_RGB_TO_GRAY 601 # define PNG_READ_RGB_TO_GRAY_SUPPORTED 602 # endif 603 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */ 604 605 #if !defined(PNG_NO_PROGRESSIVE_READ) && \ 606 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */ 607 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ 608 #endif /* about interlacing capability! You'll */ 609 /* still have interlacing unless you change the following line: */ 610 611 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */ 612 613 #ifndef PNG_NO_READ_COMPOSITE_NODIV 614 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ 615 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ 616 # endif 617 #endif 618 619 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 620 /* Deprecated, will be removed from version 2.0.0. 621 Use PNG_MNG_FEATURES_SUPPORTED instead. */ 622 #ifndef PNG_NO_READ_EMPTY_PLTE 623 # define PNG_READ_EMPTY_PLTE_SUPPORTED 624 #endif 625 #endif 626 627 #endif /* PNG_READ_SUPPORTED */ 628 629 #if defined(PNG_WRITE_SUPPORTED) 630 631 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ 632 !defined(PNG_NO_WRITE_TRANSFORMS) 633 # define PNG_WRITE_TRANSFORMS_SUPPORTED 634 #endif 635 636 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED 637 # ifndef PNG_NO_WRITE_SHIFT 638 # define PNG_WRITE_SHIFT_SUPPORTED 639 # endif 640 # ifndef PNG_NO_WRITE_PACK 641 # define PNG_WRITE_PACK_SUPPORTED 642 # endif 643 # ifndef PNG_NO_WRITE_BGR 644 # define PNG_WRITE_BGR_SUPPORTED 645 # endif 646 # ifndef PNG_NO_WRITE_SWAP 647 # define PNG_WRITE_SWAP_SUPPORTED 648 # endif 649 # ifndef PNG_NO_WRITE_PACKSWAP 650 # define PNG_WRITE_PACKSWAP_SUPPORTED 651 # endif 652 # ifndef PNG_NO_WRITE_INVERT 653 # define PNG_WRITE_INVERT_SUPPORTED 654 # endif 655 # ifndef PNG_NO_WRITE_FILLER 656 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ 657 # endif 658 # ifndef PNG_NO_WRITE_SWAP_ALPHA 659 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED 660 # endif 661 # ifndef PNG_NO_WRITE_INVERT_ALPHA 662 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED 663 # endif 664 # ifndef PNG_NO_WRITE_USER_TRANSFORM 665 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED 666 # endif 667 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ 668 669 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \ 670 !defined(PNG_WRITE_INTERLACING_SUPPORTED) 671 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant 672 encoders, but can cause trouble 673 if left undefined */ 674 #endif 675 676 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ 677 !defined(PNG_WRITE_WEIGHTED_FILTER) && \ 678 defined(PNG_FLOATING_POINT_SUPPORTED) 679 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED 680 #endif 681 682 #ifndef PNG_NO_WRITE_FLUSH 683 # define PNG_WRITE_FLUSH_SUPPORTED 684 #endif 685 686 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 687 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ 688 #ifndef PNG_NO_WRITE_EMPTY_PLTE 689 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED 690 #endif 691 #endif 692 693 #endif /* PNG_WRITE_SUPPORTED */ 694 695 #ifndef PNG_1_0_X 696 # ifndef PNG_NO_ERROR_NUMBERS 697 # define PNG_ERROR_NUMBERS_SUPPORTED 698 # endif 699 #endif /* PNG_1_0_X */ 700 701 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 702 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) 703 # ifndef PNG_NO_USER_TRANSFORM_PTR 704 # define PNG_USER_TRANSFORM_PTR_SUPPORTED 705 # endif 706 #endif 707 708 #ifndef PNG_NO_STDIO 709 # define PNG_TIME_RFC1123_SUPPORTED 710 #endif 711 712 /* This adds extra functions in pngget.c for accessing data from the 713 * info pointer (added in version 0.99) 714 * png_get_image_width() 715 * png_get_image_height() 716 * png_get_bit_depth() 717 * png_get_color_type() 718 * png_get_compression_type() 719 * png_get_filter_type() 720 * png_get_interlace_type() 721 * png_get_pixel_aspect_ratio() 722 * png_get_pixels_per_meter() 723 * png_get_x_offset_pixels() 724 * png_get_y_offset_pixels() 725 * png_get_x_offset_microns() 726 * png_get_y_offset_microns() 727 */ 728 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) 729 # define PNG_EASY_ACCESS_SUPPORTED 730 #endif 731 732 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 733 * even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined. 734 * 735 * PNG_NO_ASSEMBLER_CODE disables use of all assembler code, 736 * and removes several functions from the API. 737 * 738 * PNG_NO_MMX_CODE disables the use of MMX code without changing the API. 739 * When MMX code is off, then optimized C replacement functions are used, 740 * if PNG_NO_OPTIMIZED_CODE is not enabled. This was added in version 741 * 1.2.19. 742 */ 743 744 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE) 745 # ifndef PNG_OPTIMIZED_CODE_SUPPORTED 746 # define PNG_OPTIMIZED_CODE_SUPPORTED 747 # endif 748 #endif 749 750 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE) 751 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED 752 # define PNG_ASSEMBLER_CODE_SUPPORTED 753 # endif 754 755 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 756 # define PNG_MMX_CODE_SUPPORTED 757 # endif 758 759 # if !defined(PNG_USE_PNGVCRD) && defined(PNG_MMX_CODE_SUPPORTED) && \ 760 defined(_MSC_VER) 761 # define PNG_USE_PNGVCRD 762 # endif 763 764 # if !defined(PNG_USE_PNGGCCRD) && defined(PNG_MMX_CODE_SUPPORTED) && \ 765 !defined(PNG_USE_PNGVCRD) 766 # define PNG_USE_PNGGCCRD 767 /* If you are sure that you don't need thread safety and you are compiling 768 with PNG_USE_PNGCCRD for an MMX application, you can define this for 769 faster execution. See pnggccrd.c. 770 # define PNG_THREAD_UNSAFE_OK 771 */ 772 # endif 773 774 #endif 775 776 #if !defined(PNG_1_0_X) 777 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) 778 # define PNG_USER_MEM_SUPPORTED 779 #endif 780 #endif /* PNG_1_0_X */ 781 782 /* Added at libpng-1.2.6 */ 783 #if !defined(PNG_1_0_X) 784 #ifndef PNG_SET_USER_LIMITS_SUPPORTED 785 #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED) 786 # define PNG_SET_USER_LIMITS_SUPPORTED 787 #endif 788 #endif 789 #endif /* PNG_1_0_X */ 790 791 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter 792 * how large, set these limits to 0x7fffffffL 793 */ 794 #ifndef PNG_USER_WIDTH_MAX 795 # define PNG_USER_WIDTH_MAX 1000000L 796 #endif 797 #ifndef PNG_USER_HEIGHT_MAX 798 # define PNG_USER_HEIGHT_MAX 1000000L 799 #endif 800 801 /* These are currently experimental features, define them if you want */ 802 803 /* very little testing */ 804 /* 805 #ifdef PNG_READ_SUPPORTED 806 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 807 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 808 # endif 809 #endif 810 */ 811 812 /* This is only for PowerPC big-endian and 680x0 systems */ 813 /* some testing */ 814 /* 815 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED 816 # define PNG_READ_BIG_ENDIAN_SUPPORTED 817 #endif 818 */ 819 820 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */ 821 /* 822 #define PNG_NO_POINTER_INDEXING 823 */ 824 825 /* These functions are turned off by default, as they will be phased out. */ 826 /* 827 #define PNG_USELESS_TESTS_SUPPORTED 828 #define PNG_CORRECT_PALETTE_SUPPORTED 829 */ 830 831 /* Any chunks you are not interested in, you can undef here. The 832 * ones that allocate memory may be expecially important (hIST, 833 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info 834 * a bit smaller. 835 */ 836 837 #if defined(PNG_READ_SUPPORTED) && \ 838 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 839 !defined(PNG_NO_READ_ANCILLARY_CHUNKS) 840 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 841 #endif 842 843 #if defined(PNG_WRITE_SUPPORTED) && \ 844 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 845 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) 846 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 847 #endif 848 849 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 850 851 #ifdef PNG_NO_READ_TEXT 852 # define PNG_NO_READ_iTXt 853 # define PNG_NO_READ_tEXt 854 # define PNG_NO_READ_zTXt 855 #endif 856 #ifndef PNG_NO_READ_bKGD 857 # define PNG_READ_bKGD_SUPPORTED 858 # define PNG_bKGD_SUPPORTED 859 #endif 860 #ifndef PNG_NO_READ_cHRM 861 # define PNG_READ_cHRM_SUPPORTED 862 # define PNG_cHRM_SUPPORTED 863 #endif 864 #ifndef PNG_NO_READ_gAMA 865 # define PNG_READ_gAMA_SUPPORTED 866 # define PNG_gAMA_SUPPORTED 867 #endif 868 #ifndef PNG_NO_READ_hIST 869 # define PNG_READ_hIST_SUPPORTED 870 # define PNG_hIST_SUPPORTED 871 #endif 872 #ifndef PNG_NO_READ_iCCP 873 # define PNG_READ_iCCP_SUPPORTED 874 # define PNG_iCCP_SUPPORTED 875 #endif 876 #ifndef PNG_NO_READ_iTXt 877 # ifndef PNG_READ_iTXt_SUPPORTED 878 # define PNG_READ_iTXt_SUPPORTED 879 # endif 880 # ifndef PNG_iTXt_SUPPORTED 881 # define PNG_iTXt_SUPPORTED 882 # endif 883 #endif 884 #ifndef PNG_NO_READ_oFFs 885 # define PNG_READ_oFFs_SUPPORTED 886 # define PNG_oFFs_SUPPORTED 887 #endif 888 #ifndef PNG_NO_READ_pCAL 889 # define PNG_READ_pCAL_SUPPORTED 890 # define PNG_pCAL_SUPPORTED 891 #endif 892 #ifndef PNG_NO_READ_sCAL 893 # define PNG_READ_sCAL_SUPPORTED 894 # define PNG_sCAL_SUPPORTED 895 #endif 896 #ifndef PNG_NO_READ_pHYs 897 # define PNG_READ_pHYs_SUPPORTED 898 # define PNG_pHYs_SUPPORTED 899 #endif 900 #ifndef PNG_NO_READ_sBIT 901 # define PNG_READ_sBIT_SUPPORTED 902 # define PNG_sBIT_SUPPORTED 903 #endif 904 #ifndef PNG_NO_READ_sPLT 905 # define PNG_READ_sPLT_SUPPORTED 906 # define PNG_sPLT_SUPPORTED 907 #endif 908 #ifndef PNG_NO_READ_sRGB 909 # define PNG_READ_sRGB_SUPPORTED 910 # define PNG_sRGB_SUPPORTED 911 #endif 912 #ifndef PNG_NO_READ_tEXt 913 # define PNG_READ_tEXt_SUPPORTED 914 # define PNG_tEXt_SUPPORTED 915 #endif 916 #ifndef PNG_NO_READ_tIME 917 # define PNG_READ_tIME_SUPPORTED 918 # define PNG_tIME_SUPPORTED 919 #endif 920 #ifndef PNG_NO_READ_tRNS 921 # define PNG_READ_tRNS_SUPPORTED 922 # define PNG_tRNS_SUPPORTED 923 #endif 924 #ifndef PNG_NO_READ_zTXt 925 # define PNG_READ_zTXt_SUPPORTED 926 # define PNG_zTXt_SUPPORTED 927 #endif 928 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS 929 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED 930 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 931 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 932 # endif 933 # ifndef PNG_NO_HANDLE_AS_UNKNOWN 934 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 935 # endif 936 #endif 937 #if !defined(PNG_NO_READ_USER_CHUNKS) && \ 938 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) 939 # define PNG_READ_USER_CHUNKS_SUPPORTED 940 # define PNG_USER_CHUNKS_SUPPORTED 941 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS 942 # undef PNG_NO_READ_UNKNOWN_CHUNKS 943 # endif 944 # ifdef PNG_NO_HANDLE_AS_UNKNOWN 945 # undef PNG_NO_HANDLE_AS_UNKNOWN 946 # endif 947 #endif 948 #ifndef PNG_NO_READ_OPT_PLTE 949 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ 950 #endif /* optional PLTE chunk in RGB and RGBA images */ 951 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ 952 defined(PNG_READ_zTXt_SUPPORTED) 953 # define PNG_READ_TEXT_SUPPORTED 954 # define PNG_TEXT_SUPPORTED 955 #endif 956 957 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ 958 959 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 960 961 #ifdef PNG_NO_WRITE_TEXT 962 # define PNG_NO_WRITE_iTXt 963 # define PNG_NO_WRITE_tEXt 964 # define PNG_NO_WRITE_zTXt 965 #endif 966 #ifndef PNG_NO_WRITE_bKGD 967 # define PNG_WRITE_bKGD_SUPPORTED 968 # ifndef PNG_bKGD_SUPPORTED 969 # define PNG_bKGD_SUPPORTED 970 # endif 971 #endif 972 #ifndef PNG_NO_WRITE_cHRM 973 # define PNG_WRITE_cHRM_SUPPORTED 974 # ifndef PNG_cHRM_SUPPORTED 975 # define PNG_cHRM_SUPPORTED 976 # endif 977 #endif 978 #ifndef PNG_NO_WRITE_gAMA 979 # define PNG_WRITE_gAMA_SUPPORTED 980 # ifndef PNG_gAMA_SUPPORTED 981 # define PNG_gAMA_SUPPORTED 982 # endif 983 #endif 984 #ifndef PNG_NO_WRITE_hIST 985 # define PNG_WRITE_hIST_SUPPORTED 986 # ifndef PNG_hIST_SUPPORTED 987 # define PNG_hIST_SUPPORTED 988 # endif 989 #endif 990 #ifndef PNG_NO_WRITE_iCCP 991 # define PNG_WRITE_iCCP_SUPPORTED 992 # ifndef PNG_iCCP_SUPPORTED 993 # define PNG_iCCP_SUPPORTED 994 # endif 995 #endif 996 #ifndef PNG_NO_WRITE_iTXt 997 # ifndef PNG_WRITE_iTXt_SUPPORTED 998 # define PNG_WRITE_iTXt_SUPPORTED 999 # endif 1000 # ifndef PNG_iTXt_SUPPORTED 1001 # define PNG_iTXt_SUPPORTED 1002 # endif 1003 #endif 1004 #ifndef PNG_NO_WRITE_oFFs 1005 # define PNG_WRITE_oFFs_SUPPORTED 1006 # ifndef PNG_oFFs_SUPPORTED 1007 # define PNG_oFFs_SUPPORTED 1008 # endif 1009 #endif 1010 #ifndef PNG_NO_WRITE_pCAL 1011 # define PNG_WRITE_pCAL_SUPPORTED 1012 # ifndef PNG_pCAL_SUPPORTED 1013 # define PNG_pCAL_SUPPORTED 1014 # endif 1015 #endif 1016 #ifndef PNG_NO_WRITE_sCAL 1017 # define PNG_WRITE_sCAL_SUPPORTED 1018 # ifndef PNG_sCAL_SUPPORTED 1019 # define PNG_sCAL_SUPPORTED 1020 # endif 1021 #endif 1022 #ifndef PNG_NO_WRITE_pHYs 1023 # define PNG_WRITE_pHYs_SUPPORTED 1024 # ifndef PNG_pHYs_SUPPORTED 1025 # define PNG_pHYs_SUPPORTED 1026 # endif 1027 #endif 1028 #ifndef PNG_NO_WRITE_sBIT 1029 # define PNG_WRITE_sBIT_SUPPORTED 1030 # ifndef PNG_sBIT_SUPPORTED 1031 # define PNG_sBIT_SUPPORTED 1032 # endif 1033 #endif 1034 #ifndef PNG_NO_WRITE_sPLT 1035 # define PNG_WRITE_sPLT_SUPPORTED 1036 # ifndef PNG_sPLT_SUPPORTED 1037 # define PNG_sPLT_SUPPORTED 1038 # endif 1039 #endif 1040 #ifndef PNG_NO_WRITE_sRGB 1041 # define PNG_WRITE_sRGB_SUPPORTED 1042 # ifndef PNG_sRGB_SUPPORTED 1043 # define PNG_sRGB_SUPPORTED 1044 # endif 1045 #endif 1046 #ifndef PNG_NO_WRITE_tEXt 1047 # define PNG_WRITE_tEXt_SUPPORTED 1048 # ifndef PNG_tEXt_SUPPORTED 1049 # define PNG_tEXt_SUPPORTED 1050 # endif 1051 #endif 1052 #ifndef PNG_NO_WRITE_tIME 1053 # define PNG_WRITE_tIME_SUPPORTED 1054 # ifndef PNG_tIME_SUPPORTED 1055 # define PNG_tIME_SUPPORTED 1056 # endif 1057 #endif 1058 #ifndef PNG_NO_WRITE_tRNS 1059 # define PNG_WRITE_tRNS_SUPPORTED 1060 # ifndef PNG_tRNS_SUPPORTED 1061 # define PNG_tRNS_SUPPORTED 1062 # endif 1063 #endif 1064 #ifndef PNG_NO_WRITE_zTXt 1065 # define PNG_WRITE_zTXt_SUPPORTED 1066 # ifndef PNG_zTXt_SUPPORTED 1067 # define PNG_zTXt_SUPPORTED 1068 # endif 1069 #endif 1070 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS 1071 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1072 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1073 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 1074 # endif 1075 # ifndef PNG_NO_HANDLE_AS_UNKNOWN 1076 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1077 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1078 # endif 1079 # endif 1080 #endif 1081 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ 1082 defined(PNG_WRITE_zTXt_SUPPORTED) 1083 # define PNG_WRITE_TEXT_SUPPORTED 1084 # ifndef PNG_TEXT_SUPPORTED 1085 # define PNG_TEXT_SUPPORTED 1086 # endif 1087 #endif 1088 1089 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ 1090 1091 /* Turn this off to disable png_read_png() and 1092 * png_write_png() and leave the row_pointers member 1093 * out of the info structure. 1094 */ 1095 #ifndef PNG_NO_INFO_IMAGE 1096 # define PNG_INFO_IMAGE_SUPPORTED 1097 #endif 1098 1099 /* need the time information for reading tIME chunks */ 1100 #if defined(PNG_tIME_SUPPORTED) 1101 # if !defined(_WIN32_WCE) 1102 /* "time.h" functions are not supported on WindowsCE */ 1103 # include <time.h> 1104 # endif 1105 #endif 1106 1107 /* Some typedefs to get us started. These should be safe on most of the 1108 * common platforms. The typedefs should be at least as large as the 1109 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they 1110 * don't have to be exactly that size. Some compilers dislike passing 1111 * unsigned shorts as function parameters, so you may be better off using 1112 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may 1113 * want to have unsigned int for png_uint_32 instead of unsigned long. 1114 */ 1115 1116 typedef unsigned long png_uint_32; 1117 typedef long png_int_32; 1118 typedef unsigned short png_uint_16; 1119 typedef short png_int_16; 1120 typedef unsigned char png_byte; 1121 1122 /* This is usually size_t. It is typedef'ed just in case you need it to 1123 change (I'm not sure if you will or not, so I thought I'd be safe) */ 1124 #ifdef PNG_SIZE_T 1125 typedef PNG_SIZE_T png_size_t; 1126 # define png_sizeof(x) png_convert_size(sizeof (x)) 1127 #else 1128 typedef size_t png_size_t; 1129 # define png_sizeof(x) sizeof (x) 1130 #endif 1131 1132 /* The following is needed for medium model support. It cannot be in the 1133 * PNG_INTERNAL section. Needs modification for other compilers besides 1134 * MSC. Model independent support declares all arrays and pointers to be 1135 * large using the far keyword. The zlib version used must also support 1136 * model independent data. As of version zlib 1.0.4, the necessary changes 1137 * have been made in zlib. The USE_FAR_KEYWORD define triggers other 1138 * changes that are needed. (Tim Wegner) 1139 */ 1140 1141 /* Separate compiler dependencies (problem here is that zlib.h always 1142 defines FAR. (SJT) */ 1143 #ifdef __BORLANDC__ 1144 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) 1145 # define LDATA 1 1146 # else 1147 # define LDATA 0 1148 # endif 1149 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ 1150 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) 1151 # define PNG_MAX_MALLOC_64K 1152 # if (LDATA != 1) 1153 # ifndef FAR 1154 # define FAR __far 1155 # endif 1156 # define USE_FAR_KEYWORD 1157 # endif /* LDATA != 1 */ 1158 /* Possibly useful for moving data out of default segment. 1159 * Uncomment it if you want. Could also define FARDATA as 1160 * const if your compiler supports it. (SJT) 1161 # define FARDATA FAR 1162 */ 1163 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */ 1164 #endif /* __BORLANDC__ */ 1165 1166 1167 /* Suggest testing for specific compiler first before testing for 1168 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, 1169 * making reliance oncertain keywords suspect. (SJT) 1170 */ 1171 1172 /* MSC Medium model */ 1173 #if defined(FAR) 1174 # if defined(M_I86MM) 1175 # define USE_FAR_KEYWORD 1176 # define FARDATA FAR 1177 # include <dos.h> 1178 # endif 1179 #endif 1180 1181 /* SJT: default case */ 1182 #ifndef FAR 1183 # define FAR 1184 #endif 1185 1186 /* At this point FAR is always defined */ 1187 #ifndef FARDATA 1188 # define FARDATA 1189 #endif 1190 1191 /* Typedef for floating-point numbers that are converted 1192 to fixed-point with a multiple of 100,000, e.g., int_gamma */ 1193 typedef png_int_32 png_fixed_point; 1194 1195 /* Add typedefs for pointers */ 1196 typedef void FAR * png_voidp; 1197 typedef png_byte FAR * png_bytep; 1198 typedef png_uint_32 FAR * png_uint_32p; 1199 typedef png_int_32 FAR * png_int_32p; 1200 typedef png_uint_16 FAR * png_uint_16p; 1201 typedef png_int_16 FAR * png_int_16p; 1202 typedef PNG_CONST char FAR * png_const_charp; 1203 typedef char FAR * png_charp; 1204 typedef png_fixed_point FAR * png_fixed_point_p; 1205 1206 #ifndef PNG_NO_STDIO 1207 #if defined(_WIN32_WCE) 1208 typedef HANDLE png_FILE_p; 1209 #else 1210 typedef FILE * png_FILE_p; 1211 #endif 1212 #endif 1213 1214 #ifdef PNG_FLOATING_POINT_SUPPORTED 1215 typedef double FAR * png_doublep; 1216 #endif 1217 1218 /* Pointers to pointers; i.e. arrays */ 1219 typedef png_byte FAR * FAR * png_bytepp; 1220 typedef png_uint_32 FAR * FAR * png_uint_32pp; 1221 typedef png_int_32 FAR * FAR * png_int_32pp; 1222 typedef png_uint_16 FAR * FAR * png_uint_16pp; 1223 typedef png_int_16 FAR * FAR * png_int_16pp; 1224 typedef PNG_CONST char FAR * FAR * png_const_charpp; 1225 typedef char FAR * FAR * png_charpp; 1226 typedef png_fixed_point FAR * FAR * png_fixed_point_pp; 1227 #ifdef PNG_FLOATING_POINT_SUPPORTED 1228 typedef double FAR * FAR * png_doublepp; 1229 #endif 1230 1231 /* Pointers to pointers to pointers; i.e., pointer to array */ 1232 typedef char FAR * FAR * FAR * png_charppp; 1233 1234 #if defined(PNG_1_0_X) || defined(PNG_1_2_X) 1235 /* SPC - Is this stuff deprecated? */ 1236 /* It'll be removed as of libpng-1.3.0 - GR-P */ 1237 /* libpng typedefs for types in zlib. If zlib changes 1238 * or another compression library is used, then change these. 1239 * Eliminates need to change all the source files. 1240 */ 1241 typedef charf * png_zcharp; 1242 typedef charf * FAR * png_zcharpp; 1243 typedef z_stream FAR * png_zstreamp; 1244 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */ 1245 1246 /* 1247 * Define PNG_BUILD_DLL if the module being built is a Windows 1248 * LIBPNG DLL. 1249 * 1250 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. 1251 * It is equivalent to Microsoft predefined macro _DLL that is 1252 * automatically defined when you compile using the share 1253 * version of the CRT (C Run-Time library) 1254 * 1255 * The cygwin mods make this behavior a little different: 1256 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin 1257 * Define PNG_STATIC if you are building a static library for use with cygwin, 1258 * -or- if you are building an application that you want to link to the 1259 * static library. 1260 * PNG_USE_DLL is defined by default (no user action needed) unless one of 1261 * the other flags is defined. 1262 */ 1263 1264 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) 1265 # define PNG_DLL 1266 #endif 1267 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. 1268 * When building a static lib, default to no GLOBAL ARRAYS, but allow 1269 * command-line override 1270 */ 1271 #if defined(__CYGWIN__) 1272 # if !defined(PNG_STATIC) 1273 # if defined(PNG_USE_GLOBAL_ARRAYS) 1274 # undef PNG_USE_GLOBAL_ARRAYS 1275 # endif 1276 # if !defined(PNG_USE_LOCAL_ARRAYS) 1277 # define PNG_USE_LOCAL_ARRAYS 1278 # endif 1279 # else 1280 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) 1281 # if defined(PNG_USE_GLOBAL_ARRAYS) 1282 # undef PNG_USE_GLOBAL_ARRAYS 1283 # endif 1284 # endif 1285 # endif 1286 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1287 # define PNG_USE_LOCAL_ARRAYS 1288 # endif 1289 #endif 1290 1291 /* Do not use global arrays (helps with building DLL's) 1292 * They are no longer used in libpng itself, since version 1.0.5c, 1293 * but might be required for some pre-1.0.5c applications. 1294 */ 1295 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1296 # if defined(PNG_NO_GLOBAL_ARRAYS) || \ 1297 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER) 1298 # define PNG_USE_LOCAL_ARRAYS 1299 # else 1300 # define PNG_USE_GLOBAL_ARRAYS 1301 # endif 1302 #endif 1303 1304 #if defined(__CYGWIN__) 1305 # undef PNGAPI 1306 # define PNGAPI __cdecl 1307 # undef PNG_IMPEXP 1308 # define PNG_IMPEXP 1309 #endif 1310 1311 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", 1312 * you may get warnings regarding the linkage of png_zalloc and png_zfree. 1313 * Don't ignore those warnings; you must also reset the default calling 1314 * convention in your compiler to match your PNGAPI, and you must build 1315 * zlib and your applications the same way you build libpng. 1316 */ 1317 1318 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF) 1319 # ifndef PNG_NO_MODULEDEF 1320 # define PNG_NO_MODULEDEF 1321 # endif 1322 #endif 1323 1324 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) 1325 # define PNG_IMPEXP 1326 #endif 1327 1328 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ 1329 (( defined(_Windows) || defined(_WINDOWS) || \ 1330 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) 1331 1332 # ifndef PNGAPI 1333 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) 1334 # define PNGAPI __cdecl 1335 # else 1336 # define PNGAPI _cdecl 1337 # endif 1338 # endif 1339 1340 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ 1341 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) 1342 # define PNG_IMPEXP 1343 # endif 1344 1345 # if !defined(PNG_IMPEXP) 1346 1347 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol 1348 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol 1349 1350 /* Borland/Microsoft */ 1351 # if defined(_MSC_VER) || defined(__BORLANDC__) 1352 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) 1353 # define PNG_EXPORT PNG_EXPORT_TYPE1 1354 # else 1355 # define PNG_EXPORT PNG_EXPORT_TYPE2 1356 # if defined(PNG_BUILD_DLL) 1357 # define PNG_IMPEXP __export 1358 # else 1359 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in 1360 VC++ */ 1361 # endif /* Exists in Borland C++ for 1362 C++ classes (== huge) */ 1363 # endif 1364 # endif 1365 1366 # if !defined(PNG_IMPEXP) 1367 # if defined(PNG_BUILD_DLL) 1368 # define PNG_IMPEXP __declspec(dllexport) 1369 # else 1370 # define PNG_IMPEXP __declspec(dllimport) 1371 # endif 1372 # endif 1373 # endif /* PNG_IMPEXP */ 1374 #else /* !(DLL || non-cygwin WINDOWS) */ 1375 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 1376 # ifndef PNGAPI 1377 # define PNGAPI _System 1378 # endif 1379 # else 1380 # if 0 /* ... other platforms, with other meanings */ 1381 # endif 1382 # endif 1383 #endif 1384 1385 #ifndef PNGAPI 1386 # define PNGAPI 1387 #endif 1388 #ifndef PNG_IMPEXP 1389 # define PNG_IMPEXP 1390 #endif 1391 1392 #ifdef PNG_BUILDSYMS 1393 # ifndef PNG_EXPORT 1394 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END 1395 # endif 1396 # ifdef PNG_USE_GLOBAL_ARRAYS 1397 # ifndef PNG_EXPORT_VAR 1398 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT 1399 # endif 1400 # endif 1401 #endif 1402 1403 #ifndef PNG_EXPORT 1404 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol 1405 #endif 1406 1407 #ifdef PNG_USE_GLOBAL_ARRAYS 1408 # ifndef PNG_EXPORT_VAR 1409 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type 1410 # endif 1411 #endif 1412 1413 /* User may want to use these so they are not in PNG_INTERNAL. Any library 1414 * functions that are passed far data must be model independent. 1415 */ 1416 1417 #ifndef PNG_ABORT 1418 # define PNG_ABORT() abort() 1419 #endif 1420 1421 #ifdef PNG_SETJMP_SUPPORTED 1422 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) 1423 #else 1424 # define png_jmpbuf(png_ptr) \ 1425 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) 1426 #endif 1427 1428 #if defined(USE_FAR_KEYWORD) /* memory model independent fns */ 1429 /* use this to make far-to-near assignments */ 1430 # define CHECK 1 1431 # define NOCHECK 0 1432 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) 1433 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) 1434 # define png_snprintf _fsnprintf /* Added to v 1.2.19 */ 1435 # define png_strcpy _fstrcpy 1436 # define png_strncpy _fstrncpy /* Added to v 1.2.6 */ 1437 # define png_strlen _fstrlen 1438 # define png_memcmp _fmemcmp /* SJT: added */ 1439 # define png_memcpy _fmemcpy 1440 # define png_memset _fmemset 1441 #else /* use the usual functions */ 1442 # define CVT_PTR(ptr) (ptr) 1443 # define CVT_PTR_NOCHECK(ptr) (ptr) 1444 # ifndef PNG_NO_SNPRINTF 1445 # ifdef _MSC_VER 1446 # define png_snprintf _snprintf /* Added to v 1.2.19 */ 1447 # define png_snprintf2 _snprintf 1448 # define png_snprintf6 _snprintf 1449 # else 1450 # define png_snprintf snprintf /* Added to v 1.2.19 */ 1451 # define png_snprintf2 snprintf 1452 # define png_snprintf6 snprintf 1453 # endif 1454 # else 1455 /* You don't have or don't want to use snprintf(). Caution: Using 1456 * sprintf instead of snprintf exposes your application to accidental 1457 * or malevolent buffer overflows. If you don't have snprintf() 1458 * as a general rule you should provide one (you can get one from 1459 * Portable OpenSSH). */ 1460 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1) 1461 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2) 1462 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \ 1463 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6) 1464 # endif 1465 # define png_strcpy strcpy 1466 # define png_strncpy strncpy /* Added to v 1.2.6 */ 1467 # define png_strlen strlen 1468 # define png_memcmp memcmp /* SJT: added */ 1469 # define png_memcpy memcpy 1470 # define png_memset memset 1471 #endif 1472 /* End of memory model independent support */ 1473 1474 /* Just a little check that someone hasn't tried to define something 1475 * contradictory. 1476 */ 1477 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) 1478 # undef PNG_ZBUF_SIZE 1479 # define PNG_ZBUF_SIZE 65536L 1480 #endif 1481 1482 #ifdef PNG_READ_SUPPORTED 1483 /* Prior to libpng-1.0.9, this block was in pngasmrd.h */ 1484 #if defined(PNG_INTERNAL) 1485 1486 #if defined(PNG_USE_PNGGCCRD) || defined(PNG_USE_PNGVCRD) 1487 /* Platform must be Pentium. Makefile must assemble and load 1488 * pnggccrd.c or pngvcrd.c. MMX will be detected at run time and 1489 * used if present. 1490 */ 1491 # ifndef PNG_NO_MMX_COMBINE_ROW 1492 # define PNG_HAVE_MMX_COMBINE_ROW 1493 # endif 1494 # ifndef PNG_NO_MMX_READ_INTERLACE 1495 # define PNG_HAVE_MMX_READ_INTERLACE 1496 # endif 1497 # ifndef PNG_NO_MMX_READ_FILTER_ROW 1498 # define PNG_HAVE_MMX_READ_FILTER_ROW 1499 # ifndef PNG_NO_MMX_FILTER_SUB 1500 # define PNG_MMX_READ_FILTER_SUB_SUPPORTED 1501 # endif 1502 # if !(defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)) 1503 /* work around 64-bit gcc compiler bugs in gcc-3.x */ 1504 # ifndef PNG_NO_MMX_FILTER_UP 1505 # define PNG_MMX_READ_FILTER_UP_SUPPORTED 1506 # endif 1507 # ifndef PNG_NO_MMX_FILTER_AVG 1508 # define PNG_MMX_READ_FILTER_AVG_SUPPORTED 1509 # endif 1510 # ifndef PNG_NO_MMX_FILTER_PAETH 1511 # define PNG_MMX_READ_FILTER_PAETH_SUPPORTED 1512 # endif 1513 # endif /* !((__x86_64__) && (GNUC < 4)) */ 1514 # endif 1515 /* These are the default thresholds before the MMX code kicks in; if either 1516 * rowbytes or bitdepth is below the threshold, plain C code is used. These 1517 * can be overridden at runtime via the png_set_mmx_thresholds() call in 1518 * libpng 1.2.0 and later. The values below were chosen by Intel. 1519 */ 1520 # ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 1521 # define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 128 /* >= */ 1522 # endif 1523 # ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 1524 # define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 9 /* >= */ 1525 # endif 1526 #endif /* PNG_USE_PNGGCCRD || PNG_USE_PNGVCRD */ 1527 /* - see pngvcrd.c or pnggccrd.c for info about what is currently enabled */ 1528 1529 #endif /* PNG_INTERNAL */ 1530 #endif /* PNG_READ_SUPPORTED */ 1531 1532 /* Added at libpng-1.2.8 */ 1533 #endif /* PNG_VERSION_INFO_ONLY */ 1534 1535 #endif /* PNGCONF_H */ 1536
