1 2 /* pngconf.h - machine configurable file for libpng 3 * 4 * libpng version 1.2.8 - December 3, 2004 5 * For conditions of distribution and use, see copyright notice in png.h 6 * Copyright (c) 1998-2004 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 #include "pngusr.h" 28 #endif 29 30 /* 31 * Added at libpng-1.2.8 32 * 33 * If you create a private DLL you need to define in "pngusr.h" the followings: 34 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of 35 * the DLL was built> 36 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons." 37 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to 38 * distinguish your DLL from those of the official release. These 39 * correspond to the trailing letters that come after the version 40 * number and must match your private DLL name> 41 * e.g. // private DLL "libpng13gx.dll" 42 * #define PNG_USER_DLLFNAME_POSTFIX "gx" 43 * 44 * The following macros are also at your disposal if you want to complete the 45 * DLL VERSIONINFO structure. 46 * - PNG_USER_VERSIONINFO_COMMENTS 47 * - PNG_USER_VERSIONINFO_COMPANYNAME 48 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS 49 */ 50 51 #ifdef __STDC__ 52 #ifdef SPECIALBUILD 53 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\ 54 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.") 55 #endif 56 57 #ifdef PRIVATEBUILD 58 # pragma message("PRIVATEBUILD is deprecated. Use\ 59 PNG_USER_PRIVATEBUILD instead.") 60 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD 61 #endif 62 #endif /* __STDC__ */ 63 64 #ifndef PNG_VERSION_INFO_ONLY 65 66 /* End of material added to libpng-1.2.8 */ 67 68 /* This is the size of the compression buffer, and thus the size of 69 * an IDAT chunk. Make this whatever size you feel is best for your 70 * machine. One of these will be allocated per png_struct. When this 71 * is full, it writes the data to the disk, and does some other 72 * calculations. Making this an extremely small size will slow 73 * the library down, but you may want to experiment to determine 74 * where it becomes significant, if you are concerned with memory 75 * usage. Note that zlib allocates at least 32Kb also. For readers, 76 * this describes the size of the buffer available to read the data in. 77 * Unless this gets smaller than the size of a row (compressed), 78 * it should not make much difference how big this is. 79 */ 80 81 #ifndef PNG_ZBUF_SIZE 82 # define PNG_ZBUF_SIZE 8192 83 #endif 84 85 /* Enable if you want a write-only libpng */ 86 87 #ifndef PNG_NO_READ_SUPPORTED 88 # define PNG_READ_SUPPORTED 89 #endif 90 91 /* Enable if you want a read-only libpng */ 92 93 #ifndef PNG_NO_WRITE_SUPPORTED 94 # define PNG_WRITE_SUPPORTED 95 #endif 96 97 /* Enabled by default in 1.2.0. You can disable this if you don't need to 98 support PNGs that are embedded in MNG datastreams */ 99 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES) 100 # ifndef PNG_MNG_FEATURES_SUPPORTED 101 # define PNG_MNG_FEATURES_SUPPORTED 102 # endif 103 #endif 104 105 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED 106 # ifndef PNG_FLOATING_POINT_SUPPORTED 107 # define PNG_FLOATING_POINT_SUPPORTED 108 # endif 109 #endif 110 111 /* If you are running on a machine where you cannot allocate more 112 * than 64K of memory at once, uncomment this. While libpng will not 113 * normally need that much memory in a chunk (unless you load up a very 114 * large file), zlib needs to know how big of a chunk it can use, and 115 * libpng thus makes sure to check any memory allocation to verify it 116 * will fit into memory. 117 #define PNG_MAX_MALLOC_64K 118 */ 119 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) 120 # define PNG_MAX_MALLOC_64K 121 #endif 122 123 /* Special munging to support doing things the 'cygwin' way: 124 * 'Normal' png-on-win32 defines/defaults: 125 * PNG_BUILD_DLL -- building dll 126 * PNG_USE_DLL -- building an application, linking to dll 127 * (no define) -- building static library, or building an 128 * application and linking to the static lib 129 * 'Cygwin' defines/defaults: 130 * PNG_BUILD_DLL -- (ignored) building the dll 131 * (no define) -- (ignored) building an application, linking to the dll 132 * PNG_STATIC -- (ignored) building the static lib, or building an 133 * application that links to the static lib. 134 * ALL_STATIC -- (ignored) building various static libs, or building an 135 * application that links to the static libs. 136 * Thus, 137 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and 138 * this bit of #ifdefs will define the 'correct' config variables based on 139 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but 140 * unnecessary. 141 * 142 * Also, the precedence order is: 143 * ALL_STATIC (since we can't #undef something outside our namespace) 144 * PNG_BUILD_DLL 145 * PNG_STATIC 146 * (nothing) == PNG_USE_DLL 147 * 148 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent 149 * of auto-import in binutils, we no longer need to worry about 150 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, 151 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes 152 * to __declspec() stuff. However, we DO need to worry about 153 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults 154 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. 155 */ 156 #if defined(__CYGWIN__) 157 # if defined(ALL_STATIC) 158 # if defined(PNG_BUILD_DLL) 159 # undef PNG_BUILD_DLL 160 # endif 161 # if defined(PNG_USE_DLL) 162 # undef PNG_USE_DLL 163 # endif 164 # if defined(PNG_DLL) 165 # undef PNG_DLL 166 # endif 167 # if !defined(PNG_STATIC) 168 # define PNG_STATIC 169 # endif 170 # else 171 # if defined (PNG_BUILD_DLL) 172 # if defined(PNG_STATIC) 173 # undef PNG_STATIC 174 # endif 175 # if defined(PNG_USE_DLL) 176 # undef PNG_USE_DLL 177 # endif 178 # if !defined(PNG_DLL) 179 # define PNG_DLL 180 # endif 181 # else 182 # if defined(PNG_STATIC) 183 # if defined(PNG_USE_DLL) 184 # undef PNG_USE_DLL 185 # endif 186 # if defined(PNG_DLL) 187 # undef PNG_DLL 188 # endif 189 # else 190 # if !defined(PNG_USE_DLL) 191 # define PNG_USE_DLL 192 # endif 193 # if !defined(PNG_DLL) 194 # define PNG_DLL 195 # endif 196 # endif 197 # endif 198 # endif 199 #endif 200 201 /* This protects us against compilers that run on a windowing system 202 * and thus don't have or would rather us not use the stdio types: 203 * stdin, stdout, and stderr. The only one currently used is stderr 204 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will 205 * prevent these from being compiled and used. #defining PNG_NO_STDIO 206 * will also prevent these, plus will prevent the entire set of stdio 207 * macros and functions (FILE *, printf, etc.) from being compiled and used, 208 * unless (PNG_DEBUG > 0) has been #defined. 209 * 210 * #define PNG_NO_CONSOLE_IO 211 * #define PNG_NO_STDIO 212 */ 213 214 #if defined(_WIN32_WCE) 215 # include <windows.h> 216 /* Console I/O functions are not supported on WindowsCE */ 217 # define PNG_NO_CONSOLE_IO 218 # ifdef PNG_DEBUG 219 # undef PNG_DEBUG 220 # endif 221 #endif 222 223 #ifdef PNG_BUILD_DLL 224 # ifndef PNG_CONSOLE_IO_SUPPORTED 225 # ifndef PNG_NO_CONSOLE_IO 226 # define PNG_NO_CONSOLE_IO 227 # endif 228 # endif 229 #endif 230 231 # ifdef PNG_NO_STDIO 232 # ifndef PNG_NO_CONSOLE_IO 233 # define PNG_NO_CONSOLE_IO 234 # endif 235 # ifdef PNG_DEBUG 236 # if (PNG_DEBUG > 0) 237 # include <stdio.h> 238 # endif 239 # endif 240 # else 241 # if !defined(_WIN32_WCE) 242 /* "stdio.h" functions are not supported on WindowsCE */ 243 # include <stdio.h> 244 # endif 245 # endif 246 247 /* This macro protects us against machines that don't have function 248 * prototypes (ie K&R style headers). If your compiler does not handle 249 * function prototypes, define this macro and use the included ansi2knr. 250 * I've always been able to use _NO_PROTO as the indicator, but you may 251 * need to drag the empty declaration out in front of here, or change the 252 * ifdef to suit your own needs. 253 */ 254 #ifndef PNGARG 255 256 #ifdef OF /* zlib prototype munger */ 257 # define PNGARG(arglist) OF(arglist) 258 #else 259 260 #ifdef _NO_PROTO 261 # define PNGARG(arglist) () 262 # ifndef PNG_TYPECAST_NULL 263 # define PNG_TYPECAST_NULL 264 # endif 265 #else 266 # define PNGARG(arglist) arglist 267 #endif /* _NO_PROTO */ 268 269 #endif /* OF */ 270 271 #endif /* PNGARG */ 272 273 /* Try to determine if we are compiling on a Mac. Note that testing for 274 * just __MWERKS__ is not good enough, because the Codewarrior is now used 275 * on non-Mac platforms. 276 */ 277 #ifndef MACOS 278 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ 279 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) 280 # define MACOS 281 # endif 282 #endif 283 284 /* enough people need this for various reasons to include it here */ 285 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) 286 # include <sys/types.h> 287 #endif 288 289 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) 290 # define PNG_SETJMP_SUPPORTED 291 #endif 292 293 #ifdef PNG_SETJMP_SUPPORTED 294 /* This is an attempt to force a single setjmp behaviour on Linux. If 295 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. 296 */ 297 298 # ifdef __linux__ 299 # ifdef _BSD_SOURCE 300 # define PNG_SAVE_BSD_SOURCE 301 # undef _BSD_SOURCE 302 # endif 303 # ifdef _SETJMP_H 304 /* If you encounter a compiler error here, see the explanation 305 * near the end of INSTALL. 306 */ 307 __png.h__ already includes setjmp.h; 308 __dont__ include it again.; 309 # endif 310 # endif /* __linux__ */ 311 312 /* include setjmp.h for error handling */ 313 # include <setjmp.h> 314 315 # ifdef __linux__ 316 # ifdef PNG_SAVE_BSD_SOURCE 317 # define _BSD_SOURCE 318 # undef PNG_SAVE_BSD_SOURCE 319 # endif 320 # endif /* __linux__ */ 321 #endif /* PNG_SETJMP_SUPPORTED */ 322 323 #ifdef BSD 324 # include <strings.h> 325 #else 326 # include <string.h> 327 #endif 328 329 /* Other defines for things like memory and the like can go here. */ 330 #ifdef PNG_INTERNAL 331 332 #include <stdlib.h> 333 334 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which 335 * aren't usually used outside the library (as far as I know), so it is 336 * debatable if they should be exported at all. In the future, when it is 337 * possible to have run-time registry of chunk-handling functions, some of 338 * these will be made available again. 339 #define PNG_EXTERN extern 340 */ 341 #define PNG_EXTERN 342 343 /* Other defines specific to compilers can go here. Try to keep 344 * them inside an appropriate ifdef/endif pair for portability. 345 */ 346 347 #if defined(PNG_FLOATING_POINT_SUPPORTED) 348 # if defined(MACOS) 349 /* We need to check that <math.h> hasn't already been included earlier 350 * as it seems it doesn't agree with <fp.h>, yet we should really use 351 * <fp.h> if possible. 352 */ 353 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) 354 # include <fp.h> 355 # endif 356 # else 357 # include <math.h> 358 # endif 359 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) 360 /* Amiga SAS/C: We must include builtin FPU functions when compiling using 361 * MATH=68881 362 */ 363 # include <m68881.h> 364 # endif 365 #endif 366 367 /* Codewarrior on NT has linking problems without this. */ 368 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) 369 # define PNG_ALWAYS_EXTERN 370 #endif 371 372 /* This provides the non-ANSI (far) memory allocation routines. */ 373 #if defined(__TURBOC__) && defined(__MSDOS__) 374 # include <mem.h> 375 # include <alloc.h> 376 #endif 377 378 /* I have no idea why is this necessary... */ 379 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ 380 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) 381 # include <malloc.h> 382 #endif 383 384 /* This controls how fine the dithering gets. As this allocates 385 * a largish chunk of memory (32K), those who are not as concerned 386 * with dithering quality can decrease some or all of these. 387 */ 388 #ifndef PNG_DITHER_RED_BITS 389 # define PNG_DITHER_RED_BITS 5 390 #endif 391 #ifndef PNG_DITHER_GREEN_BITS 392 # define PNG_DITHER_GREEN_BITS 5 393 #endif 394 #ifndef PNG_DITHER_BLUE_BITS 395 # define PNG_DITHER_BLUE_BITS 5 396 #endif 397 398 /* This controls how fine the gamma correction becomes when you 399 * are only interested in 8 bits anyway. Increasing this value 400 * results in more memory being used, and more pow() functions 401 * being called to fill in the gamma tables. Don't set this value 402 * less then 8, and even that may not work (I haven't tested it). 403 */ 404 405 #ifndef PNG_MAX_GAMMA_8 406 # define PNG_MAX_GAMMA_8 11 407 #endif 408 409 /* This controls how much a difference in gamma we can tolerate before 410 * we actually start doing gamma conversion. 411 */ 412 #ifndef PNG_GAMMA_THRESHOLD 413 # define PNG_GAMMA_THRESHOLD 0.05 414 #endif 415 416 #endif /* PNG_INTERNAL */ 417 418 /* The following uses const char * instead of char * for error 419 * and warning message functions, so some compilers won't complain. 420 * If you do not want to use const, define PNG_NO_CONST here. 421 */ 422 423 #ifndef PNG_NO_CONST 424 # define PNG_CONST const 425 #else 426 # define PNG_CONST 427 #endif 428 429 /* The following defines give you the ability to remove code from the 430 * library that you will not be using. I wish I could figure out how to 431 * automate this, but I can't do that without making it seriously hard 432 * on the users. So if you are not using an ability, change the #define 433 * to and #undef, and that part of the library will not be compiled. If 434 * your linker can't find a function, you may want to make sure the 435 * ability is defined here. Some of these depend upon some others being 436 * defined. I haven't figured out all the interactions here, so you may 437 * have to experiment awhile to get everything to compile. If you are 438 * creating or using a shared library, you probably shouldn't touch this, 439 * as it will affect the size of the structures, and this will cause bad 440 * things to happen if the library and/or application ever change. 441 */ 442 443 /* Any features you will not be using can be undef'ed here */ 444 445 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user 446 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS 447 * on the compile line, then pick and choose which ones to define without 448 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED 449 * if you only want to have a png-compliant reader/writer but don't need 450 * any of the extra transformations. This saves about 80 kbytes in a 451 * typical installation of the library. (PNG_NO_* form added in version 452 * 1.0.1c, for consistency) 453 */ 454 455 /* The size of the png_text structure changed in libpng-1.0.6 when 456 * iTXt is supported. It is turned off by default, to support old apps 457 * that malloc the png_text structure instead of calling png_set_text() 458 * and letting libpng malloc it. It will be turned on by default in 459 * libpng-1.3.0. 460 */ 461 462 #ifndef PNG_iTXt_SUPPORTED 463 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) 464 # define PNG_NO_READ_iTXt 465 # endif 466 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) 467 # define PNG_NO_WRITE_iTXt 468 # endif 469 #endif 470 471 /* The following support, added after version 1.0.0, can be turned off here en 472 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility 473 * with old applications that require the length of png_struct and png_info 474 * to remain unchanged. 475 */ 476 477 #ifdef PNG_LEGACY_SUPPORTED 478 # define PNG_NO_FREE_ME 479 # define PNG_NO_READ_UNKNOWN_CHUNKS 480 # define PNG_NO_WRITE_UNKNOWN_CHUNKS 481 # define PNG_NO_READ_USER_CHUNKS 482 # define PNG_NO_READ_iCCP 483 # define PNG_NO_WRITE_iCCP 484 # define PNG_NO_READ_iTXt 485 # define PNG_NO_WRITE_iTXt 486 # define PNG_NO_READ_sCAL 487 # define PNG_NO_WRITE_sCAL 488 # define PNG_NO_READ_sPLT 489 # define PNG_NO_WRITE_sPLT 490 # define PNG_NO_INFO_IMAGE 491 # define PNG_NO_READ_RGB_TO_GRAY 492 # define PNG_NO_READ_USER_TRANSFORM 493 # define PNG_NO_WRITE_USER_TRANSFORM 494 # define PNG_NO_USER_MEM 495 # define PNG_NO_READ_EMPTY_PLTE 496 # define PNG_NO_MNG_FEATURES 497 # define PNG_NO_FIXED_POINT_SUPPORTED 498 #endif 499 500 /* Ignore attempt to turn off both floating and fixed point support */ 501 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ 502 !defined(PNG_NO_FIXED_POINT_SUPPORTED) 503 # define PNG_FIXED_POINT_SUPPORTED 504 #endif 505 506 #ifndef PNG_NO_FREE_ME 507 # define PNG_FREE_ME_SUPPORTED 508 #endif 509 510 #if defined(PNG_READ_SUPPORTED) 511 512 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ 513 !defined(PNG_NO_READ_TRANSFORMS) 514 # define PNG_READ_TRANSFORMS_SUPPORTED 515 #endif 516 517 #ifdef PNG_READ_TRANSFORMS_SUPPORTED 518 # ifndef PNG_NO_READ_EXPAND 519 # define PNG_READ_EXPAND_SUPPORTED 520 # endif 521 # ifndef PNG_NO_READ_SHIFT 522 # define PNG_READ_SHIFT_SUPPORTED 523 # endif 524 # ifndef PNG_NO_READ_PACK 525 # define PNG_READ_PACK_SUPPORTED 526 # endif 527 # ifndef PNG_NO_READ_BGR 528 # define PNG_READ_BGR_SUPPORTED 529 # endif 530 # ifndef PNG_NO_READ_SWAP 531 # define PNG_READ_SWAP_SUPPORTED 532 # endif 533 # ifndef PNG_NO_READ_PACKSWAP 534 # define PNG_READ_PACKSWAP_SUPPORTED 535 # endif 536 # ifndef PNG_NO_READ_INVERT 537 # define PNG_READ_INVERT_SUPPORTED 538 # endif 539 # ifndef PNG_NO_READ_DITHER 540 # define PNG_READ_DITHER_SUPPORTED 541 # endif 542 # ifndef PNG_NO_READ_BACKGROUND 543 # define PNG_READ_BACKGROUND_SUPPORTED 544 # endif 545 # ifndef PNG_NO_READ_16_TO_8 546 # define PNG_READ_16_TO_8_SUPPORTED 547 # endif 548 # ifndef PNG_NO_READ_FILLER 549 # define PNG_READ_FILLER_SUPPORTED 550 # endif 551 # ifndef PNG_NO_READ_GAMMA 552 # define PNG_READ_GAMMA_SUPPORTED 553 # endif 554 # ifndef PNG_NO_READ_GRAY_TO_RGB 555 # define PNG_READ_GRAY_TO_RGB_SUPPORTED 556 # endif 557 # ifndef PNG_NO_READ_SWAP_ALPHA 558 # define PNG_READ_SWAP_ALPHA_SUPPORTED 559 # endif 560 # ifndef PNG_NO_READ_INVERT_ALPHA 561 # define PNG_READ_INVERT_ALPHA_SUPPORTED 562 # endif 563 # ifndef PNG_NO_READ_STRIP_ALPHA 564 # define PNG_READ_STRIP_ALPHA_SUPPORTED 565 # endif 566 # ifndef PNG_NO_READ_USER_TRANSFORM 567 # define PNG_READ_USER_TRANSFORM_SUPPORTED 568 # endif 569 # ifndef PNG_NO_READ_RGB_TO_GRAY 570 # define PNG_READ_RGB_TO_GRAY_SUPPORTED 571 # endif 572 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */ 573 574 #if !defined(PNG_NO_PROGRESSIVE_READ) && \ 575 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */ 576 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ 577 #endif /* about interlacing capability! You'll */ 578 /* still have interlacing unless you change the following line: */ 579 580 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */ 581 582 #ifndef PNG_NO_READ_COMPOSITE_NODIV 583 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ 584 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ 585 # endif 586 #endif 587 588 /* Deprecated, will be removed from version 2.0.0. 589 Use PNG_MNG_FEATURES_SUPPORTED instead. */ 590 #ifndef PNG_NO_READ_EMPTY_PLTE 591 # define PNG_READ_EMPTY_PLTE_SUPPORTED 592 #endif 593 594 #endif /* PNG_READ_SUPPORTED */ 595 596 #if defined(PNG_WRITE_SUPPORTED) 597 598 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ 599 !defined(PNG_NO_WRITE_TRANSFORMS) 600 # define PNG_WRITE_TRANSFORMS_SUPPORTED 601 #endif 602 603 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED 604 # ifndef PNG_NO_WRITE_SHIFT 605 # define PNG_WRITE_SHIFT_SUPPORTED 606 # endif 607 # ifndef PNG_NO_WRITE_PACK 608 # define PNG_WRITE_PACK_SUPPORTED 609 # endif 610 # ifndef PNG_NO_WRITE_BGR 611 # define PNG_WRITE_BGR_SUPPORTED 612 # endif 613 # ifndef PNG_NO_WRITE_SWAP 614 # define PNG_WRITE_SWAP_SUPPORTED 615 # endif 616 # ifndef PNG_NO_WRITE_PACKSWAP 617 # define PNG_WRITE_PACKSWAP_SUPPORTED 618 # endif 619 # ifndef PNG_NO_WRITE_INVERT 620 # define PNG_WRITE_INVERT_SUPPORTED 621 # endif 622 # ifndef PNG_NO_WRITE_FILLER 623 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ 624 # endif 625 # ifndef PNG_NO_WRITE_SWAP_ALPHA 626 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED 627 # endif 628 # ifndef PNG_NO_WRITE_INVERT_ALPHA 629 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED 630 # endif 631 # ifndef PNG_NO_WRITE_USER_TRANSFORM 632 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED 633 # endif 634 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ 635 636 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant 637 encoders, but can cause trouble 638 if left undefined */ 639 640 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ 641 defined(PNG_FLOATING_POINT_SUPPORTED) 642 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED 643 #endif 644 645 #ifndef PNG_NO_WRITE_FLUSH 646 # define PNG_WRITE_FLUSH_SUPPORTED 647 #endif 648 649 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ 650 #ifndef PNG_NO_WRITE_EMPTY_PLTE 651 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED 652 #endif 653 654 #endif /* PNG_WRITE_SUPPORTED */ 655 656 #ifndef PNG_1_0_X 657 # ifndef PNG_NO_ERROR_NUMBERS 658 # define PNG_ERROR_NUMBERS_SUPPORTED 659 # endif 660 #endif /* PNG_1_0_X */ 661 662 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 663 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) 664 # ifndef PNG_NO_USER_TRANSFORM_PTR 665 # define PNG_USER_TRANSFORM_PTR_SUPPORTED 666 # endif 667 #endif 668 669 #ifndef PNG_NO_STDIO 670 # define PNG_TIME_RFC1123_SUPPORTED 671 #endif 672 673 /* This adds extra functions in pngget.c for accessing data from the 674 * info pointer (added in version 0.99) 675 * png_get_image_width() 676 * png_get_image_height() 677 * png_get_bit_depth() 678 * png_get_color_type() 679 * png_get_compression_type() 680 * png_get_filter_type() 681 * png_get_interlace_type() 682 * png_get_pixel_aspect_ratio() 683 * png_get_pixels_per_meter() 684 * png_get_x_offset_pixels() 685 * png_get_y_offset_pixels() 686 * png_get_x_offset_microns() 687 * png_get_y_offset_microns() 688 */ 689 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) 690 # define PNG_EASY_ACCESS_SUPPORTED 691 #endif 692 693 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 694 even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */ 695 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE) 696 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED 697 # define PNG_ASSEMBLER_CODE_SUPPORTED 698 # endif 699 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 700 # define PNG_MMX_CODE_SUPPORTED 701 # endif 702 #endif 703 704 /* If you are sure that you don't need thread safety and you are compiling 705 with PNG_USE_PNGCCRD for an MMX application, you can define this for 706 faster execution. See pnggccrd.c. 707 #define PNG_THREAD_UNSAFE_OK 708 */ 709 710 #if !defined(PNG_1_0_X) 711 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) 712 # define PNG_USER_MEM_SUPPORTED 713 #endif 714 #endif /* PNG_1_0_X */ 715 716 /* Added at libpng-1.2.6 */ 717 #if !defined(PNG_1_0_X) 718 #ifndef PNG_SET_USER_LIMITS_SUPPORTED 719 #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED) 720 # define PNG_SET_USER_LIMITS_SUPPORTED 721 #endif 722 #endif 723 #endif /* PNG_1_0_X */ 724 725 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter 726 * how large, set these limits to 0x7fffffffL 727 */ 728 #ifndef PNG_USER_WIDTH_MAX 729 # define PNG_USER_WIDTH_MAX 1000000L 730 #endif 731 #ifndef PNG_USER_HEIGHT_MAX 732 # define PNG_USER_HEIGHT_MAX 1000000L 733 #endif 734 735 /* These are currently experimental features, define them if you want */ 736 737 /* very little testing */ 738 /* 739 #ifdef PNG_READ_SUPPORTED 740 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 741 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 742 # endif 743 #endif 744 */ 745 746 /* This is only for PowerPC big-endian and 680x0 systems */ 747 /* some testing */ 748 /* 749 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED 750 # define PNG_READ_BIG_ENDIAN_SUPPORTED 751 #endif 752 */ 753 754 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */ 755 /* 756 #define PNG_NO_POINTER_INDEXING 757 */ 758 759 /* These functions are turned off by default, as they will be phased out. */ 760 /* 761 #define PNG_USELESS_TESTS_SUPPORTED 762 #define PNG_CORRECT_PALETTE_SUPPORTED 763 */ 764 765 /* Any chunks you are not interested in, you can undef here. The 766 * ones that allocate memory may be expecially important (hIST, 767 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info 768 * a bit smaller. 769 */ 770 771 #if defined(PNG_READ_SUPPORTED) && \ 772 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 773 !defined(PNG_NO_READ_ANCILLARY_CHUNKS) 774 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 775 #endif 776 777 #if defined(PNG_WRITE_SUPPORTED) && \ 778 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 779 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) 780 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 781 #endif 782 783 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 784 785 #ifdef PNG_NO_READ_TEXT 786 # define PNG_NO_READ_iTXt 787 # define PNG_NO_READ_tEXt 788 # define PNG_NO_READ_zTXt 789 #endif 790 #ifndef PNG_NO_READ_bKGD 791 # define PNG_READ_bKGD_SUPPORTED 792 # define PNG_bKGD_SUPPORTED 793 #endif 794 #ifndef PNG_NO_READ_cHRM 795 # define PNG_READ_cHRM_SUPPORTED 796 # define PNG_cHRM_SUPPORTED 797 #endif 798 #ifndef PNG_NO_READ_gAMA 799 # define PNG_READ_gAMA_SUPPORTED 800 # define PNG_gAMA_SUPPORTED 801 #endif 802 #ifndef PNG_NO_READ_hIST 803 # define PNG_READ_hIST_SUPPORTED 804 # define PNG_hIST_SUPPORTED 805 #endif 806 #ifndef PNG_NO_READ_iCCP 807 # define PNG_READ_iCCP_SUPPORTED 808 # define PNG_iCCP_SUPPORTED 809 #endif 810 #ifndef PNG_NO_READ_iTXt 811 # ifndef PNG_READ_iTXt_SUPPORTED 812 # define PNG_READ_iTXt_SUPPORTED 813 # endif 814 # ifndef PNG_iTXt_SUPPORTED 815 # define PNG_iTXt_SUPPORTED 816 # endif 817 #endif 818 #ifndef PNG_NO_READ_oFFs 819 # define PNG_READ_oFFs_SUPPORTED 820 # define PNG_oFFs_SUPPORTED 821 #endif 822 #ifndef PNG_NO_READ_pCAL 823 # define PNG_READ_pCAL_SUPPORTED 824 # define PNG_pCAL_SUPPORTED 825 #endif 826 #ifndef PNG_NO_READ_sCAL 827 # define PNG_READ_sCAL_SUPPORTED 828 # define PNG_sCAL_SUPPORTED 829 #endif 830 #ifndef PNG_NO_READ_pHYs 831 # define PNG_READ_pHYs_SUPPORTED 832 # define PNG_pHYs_SUPPORTED 833 #endif 834 #ifndef PNG_NO_READ_sBIT 835 # define PNG_READ_sBIT_SUPPORTED 836 # define PNG_sBIT_SUPPORTED 837 #endif 838 #ifndef PNG_NO_READ_sPLT 839 # define PNG_READ_sPLT_SUPPORTED 840 # define PNG_sPLT_SUPPORTED 841 #endif 842 #ifndef PNG_NO_READ_sRGB 843 # define PNG_READ_sRGB_SUPPORTED 844 # define PNG_sRGB_SUPPORTED 845 #endif 846 #ifndef PNG_NO_READ_tEXt 847 # define PNG_READ_tEXt_SUPPORTED 848 # define PNG_tEXt_SUPPORTED 849 #endif 850 #ifndef PNG_NO_READ_tIME 851 # define PNG_READ_tIME_SUPPORTED 852 # define PNG_tIME_SUPPORTED 853 #endif 854 #ifndef PNG_NO_READ_tRNS 855 # define PNG_READ_tRNS_SUPPORTED 856 # define PNG_tRNS_SUPPORTED 857 #endif 858 #ifndef PNG_NO_READ_zTXt 859 # define PNG_READ_zTXt_SUPPORTED 860 # define PNG_zTXt_SUPPORTED 861 #endif 862 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS 863 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED 864 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 865 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 866 # endif 867 # ifndef PNG_NO_HANDLE_AS_UNKNOWN 868 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 869 # endif 870 #endif 871 #if !defined(PNG_NO_READ_USER_CHUNKS) && \ 872 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) 873 # define PNG_READ_USER_CHUNKS_SUPPORTED 874 # define PNG_USER_CHUNKS_SUPPORTED 875 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS 876 # undef PNG_NO_READ_UNKNOWN_CHUNKS 877 # endif 878 # ifdef PNG_NO_HANDLE_AS_UNKNOWN 879 # undef PNG_NO_HANDLE_AS_UNKNOWN 880 # endif 881 #endif 882 #ifndef PNG_NO_READ_OPT_PLTE 883 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ 884 #endif /* optional PLTE chunk in RGB and RGBA images */ 885 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ 886 defined(PNG_READ_zTXt_SUPPORTED) 887 # define PNG_READ_TEXT_SUPPORTED 888 # define PNG_TEXT_SUPPORTED 889 #endif 890 891 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ 892 893 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 894 895 #ifdef PNG_NO_WRITE_TEXT 896 # define PNG_NO_WRITE_iTXt 897 # define PNG_NO_WRITE_tEXt 898 # define PNG_NO_WRITE_zTXt 899 #endif 900 #ifndef PNG_NO_WRITE_bKGD 901 # define PNG_WRITE_bKGD_SUPPORTED 902 # ifndef PNG_bKGD_SUPPORTED 903 # define PNG_bKGD_SUPPORTED 904 # endif 905 #endif 906 #ifndef PNG_NO_WRITE_cHRM 907 # define PNG_WRITE_cHRM_SUPPORTED 908 # ifndef PNG_cHRM_SUPPORTED 909 # define PNG_cHRM_SUPPORTED 910 # endif 911 #endif 912 #ifndef PNG_NO_WRITE_gAMA 913 # define PNG_WRITE_gAMA_SUPPORTED 914 # ifndef PNG_gAMA_SUPPORTED 915 # define PNG_gAMA_SUPPORTED 916 # endif 917 #endif 918 #ifndef PNG_NO_WRITE_hIST 919 # define PNG_WRITE_hIST_SUPPORTED 920 # ifndef PNG_hIST_SUPPORTED 921 # define PNG_hIST_SUPPORTED 922 # endif 923 #endif 924 #ifndef PNG_NO_WRITE_iCCP 925 # define PNG_WRITE_iCCP_SUPPORTED 926 # ifndef PNG_iCCP_SUPPORTED 927 # define PNG_iCCP_SUPPORTED 928 # endif 929 #endif 930 #ifndef PNG_NO_WRITE_iTXt 931 # ifndef PNG_WRITE_iTXt_SUPPORTED 932 # define PNG_WRITE_iTXt_SUPPORTED 933 # endif 934 # ifndef PNG_iTXt_SUPPORTED 935 # define PNG_iTXt_SUPPORTED 936 # endif 937 #endif 938 #ifndef PNG_NO_WRITE_oFFs 939 # define PNG_WRITE_oFFs_SUPPORTED 940 # ifndef PNG_oFFs_SUPPORTED 941 # define PNG_oFFs_SUPPORTED 942 # endif 943 #endif 944 #ifndef PNG_NO_WRITE_pCAL 945 # define PNG_WRITE_pCAL_SUPPORTED 946 # ifndef PNG_pCAL_SUPPORTED 947 # define PNG_pCAL_SUPPORTED 948 # endif 949 #endif 950 #ifndef PNG_NO_WRITE_sCAL 951 # define PNG_WRITE_sCAL_SUPPORTED 952 # ifndef PNG_sCAL_SUPPORTED 953 # define PNG_sCAL_SUPPORTED 954 # endif 955 #endif 956 #ifndef PNG_NO_WRITE_pHYs 957 # define PNG_WRITE_pHYs_SUPPORTED 958 # ifndef PNG_pHYs_SUPPORTED 959 # define PNG_pHYs_SUPPORTED 960 # endif 961 #endif 962 #ifndef PNG_NO_WRITE_sBIT 963 # define PNG_WRITE_sBIT_SUPPORTED 964 # ifndef PNG_sBIT_SUPPORTED 965 # define PNG_sBIT_SUPPORTED 966 # endif 967 #endif 968 #ifndef PNG_NO_WRITE_sPLT 969 # define PNG_WRITE_sPLT_SUPPORTED 970 # ifndef PNG_sPLT_SUPPORTED 971 # define PNG_sPLT_SUPPORTED 972 # endif 973 #endif 974 #ifndef PNG_NO_WRITE_sRGB 975 # define PNG_WRITE_sRGB_SUPPORTED 976 # ifndef PNG_sRGB_SUPPORTED 977 # define PNG_sRGB_SUPPORTED 978 # endif 979 #endif 980 #ifndef PNG_NO_WRITE_tEXt 981 # define PNG_WRITE_tEXt_SUPPORTED 982 # ifndef PNG_tEXt_SUPPORTED 983 # define PNG_tEXt_SUPPORTED 984 # endif 985 #endif 986 #ifndef PNG_NO_WRITE_tIME 987 # define PNG_WRITE_tIME_SUPPORTED 988 # ifndef PNG_tIME_SUPPORTED 989 # define PNG_tIME_SUPPORTED 990 # endif 991 #endif 992 #ifndef PNG_NO_WRITE_tRNS 993 # define PNG_WRITE_tRNS_SUPPORTED 994 # ifndef PNG_tRNS_SUPPORTED 995 # define PNG_tRNS_SUPPORTED 996 # endif 997 #endif 998 #ifndef PNG_NO_WRITE_zTXt 999 # define PNG_WRITE_zTXt_SUPPORTED 1000 # ifndef PNG_zTXt_SUPPORTED 1001 # define PNG_zTXt_SUPPORTED 1002 # endif 1003 #endif 1004 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS 1005 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1006 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1007 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 1008 # endif 1009 # ifndef PNG_NO_HANDLE_AS_UNKNOWN 1010 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1011 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1012 # endif 1013 # endif 1014 #endif 1015 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ 1016 defined(PNG_WRITE_zTXt_SUPPORTED) 1017 # define PNG_WRITE_TEXT_SUPPORTED 1018 # ifndef PNG_TEXT_SUPPORTED 1019 # define PNG_TEXT_SUPPORTED 1020 # endif 1021 #endif 1022 1023 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ 1024 1025 /* Turn this off to disable png_read_png() and 1026 * png_write_png() and leave the row_pointers member 1027 * out of the info structure. 1028 */ 1029 #ifndef PNG_NO_INFO_IMAGE 1030 # define PNG_INFO_IMAGE_SUPPORTED 1031 #endif 1032 1033 /* need the time information for reading tIME chunks */ 1034 #if defined(PNG_tIME_SUPPORTED) 1035 # if !defined(_WIN32_WCE) 1036 /* "time.h" functions are not supported on WindowsCE */ 1037 # include <time.h> 1038 # endif 1039 #endif 1040 1041 /* Some typedefs to get us started. These should be safe on most of the 1042 * common platforms. The typedefs should be at least as large as the 1043 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they 1044 * don't have to be exactly that size. Some compilers dislike passing 1045 * unsigned shorts as function parameters, so you may be better off using 1046 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may 1047 * want to have unsigned int for png_uint_32 instead of unsigned long. 1048 */ 1049 1050 typedef unsigned long png_uint_32; 1051 typedef long png_int_32; 1052 typedef unsigned short png_uint_16; 1053 typedef short png_int_16; 1054 typedef unsigned char png_byte; 1055 1056 /* This is usually size_t. It is typedef'ed just in case you need it to 1057 change (I'm not sure if you will or not, so I thought I'd be safe) */ 1058 #ifdef PNG_SIZE_T 1059 typedef PNG_SIZE_T png_size_t; 1060 # define png_sizeof(x) png_convert_size(sizeof (x)) 1061 #else 1062 typedef size_t png_size_t; 1063 # define png_sizeof(x) sizeof (x) 1064 #endif 1065 1066 /* The following is needed for medium model support. It cannot be in the 1067 * PNG_INTERNAL section. Needs modification for other compilers besides 1068 * MSC. Model independent support declares all arrays and pointers to be 1069 * large using the far keyword. The zlib version used must also support 1070 * model independent data. As of version zlib 1.0.4, the necessary changes 1071 * have been made in zlib. The USE_FAR_KEYWORD define triggers other 1072 * changes that are needed. (Tim Wegner) 1073 */ 1074 1075 /* Separate compiler dependencies (problem here is that zlib.h always 1076 defines FAR. (SJT) */ 1077 #ifdef __BORLANDC__ 1078 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) 1079 # define LDATA 1 1080 # else 1081 # define LDATA 0 1082 # endif 1083 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ 1084 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) 1085 # define PNG_MAX_MALLOC_64K 1086 # if (LDATA != 1) 1087 # ifndef FAR 1088 # define FAR __far 1089 # endif 1090 # define USE_FAR_KEYWORD 1091 # endif /* LDATA != 1 */ 1092 /* Possibly useful for moving data out of default segment. 1093 * Uncomment it if you want. Could also define FARDATA as 1094 * const if your compiler supports it. (SJT) 1095 # define FARDATA FAR 1096 */ 1097 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */ 1098 #endif /* __BORLANDC__ */ 1099 1100 1101 /* Suggest testing for specific compiler first before testing for 1102 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, 1103 * making reliance oncertain keywords suspect. (SJT) 1104 */ 1105 1106 /* MSC Medium model */ 1107 #if defined(FAR) 1108 # if defined(M_I86MM) 1109 # define USE_FAR_KEYWORD 1110 # define FARDATA FAR 1111 # include <dos.h> 1112 # endif 1113 #endif 1114 1115 /* SJT: default case */ 1116 #ifndef FAR 1117 # define FAR 1118 #endif 1119 1120 /* At this point FAR is always defined */ 1121 #ifndef FARDATA 1122 # define FARDATA 1123 #endif 1124 1125 /* Typedef for floating-point numbers that are converted 1126 to fixed-point with a multiple of 100,000, e.g., int_gamma */ 1127 typedef png_int_32 png_fixed_point; 1128 1129 /* Add typedefs for pointers */ 1130 typedef void FAR * png_voidp; 1131 typedef png_byte FAR * png_bytep; 1132 typedef png_uint_32 FAR * png_uint_32p; 1133 typedef png_int_32 FAR * png_int_32p; 1134 typedef png_uint_16 FAR * png_uint_16p; 1135 typedef png_int_16 FAR * png_int_16p; 1136 typedef PNG_CONST char FAR * png_const_charp; 1137 typedef char FAR * png_charp; 1138 typedef png_fixed_point FAR * png_fixed_point_p; 1139 1140 #ifndef PNG_NO_STDIO 1141 #if defined(_WIN32_WCE) 1142 typedef HANDLE png_FILE_p; 1143 #else 1144 typedef FILE * png_FILE_p; 1145 #endif 1146 #endif 1147 1148 #ifdef PNG_FLOATING_POINT_SUPPORTED 1149 typedef double FAR * png_doublep; 1150 #endif 1151 1152 /* Pointers to pointers; i.e. arrays */ 1153 typedef png_byte FAR * FAR * png_bytepp; 1154 typedef png_uint_32 FAR * FAR * png_uint_32pp; 1155 typedef png_int_32 FAR * FAR * png_int_32pp; 1156 typedef png_uint_16 FAR * FAR * png_uint_16pp; 1157 typedef png_int_16 FAR * FAR * png_int_16pp; 1158 typedef PNG_CONST char FAR * FAR * png_const_charpp; 1159 typedef char FAR * FAR * png_charpp; 1160 typedef png_fixed_point FAR * FAR * png_fixed_point_pp; 1161 #ifdef PNG_FLOATING_POINT_SUPPORTED 1162 typedef double FAR * FAR * png_doublepp; 1163 #endif 1164 1165 /* Pointers to pointers to pointers; i.e., pointer to array */ 1166 typedef char FAR * FAR * FAR * png_charppp; 1167 1168 #if defined(PNG_1_0_X) || defined(PNG_1_2_X) 1169 /* SPC - Is this stuff deprecated? */ 1170 /* It'll be removed as of libpng-1.3.0 - GR-P */ 1171 /* libpng typedefs for types in zlib. If zlib changes 1172 * or another compression library is used, then change these. 1173 * Eliminates need to change all the source files. 1174 */ 1175 typedef charf * png_zcharp; 1176 typedef charf * FAR * png_zcharpp; 1177 typedef z_stream FAR * png_zstreamp; 1178 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */ 1179 1180 /* 1181 * Define PNG_BUILD_DLL if the module being built is a Windows 1182 * LIBPNG DLL. 1183 * 1184 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. 1185 * It is equivalent to Microsoft predefined macro _DLL that is 1186 * automatically defined when you compile using the share 1187 * version of the CRT (C Run-Time library) 1188 * 1189 * The cygwin mods make this behavior a little different: 1190 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin 1191 * Define PNG_STATIC if you are building a static library for use with cygwin, 1192 * -or- if you are building an application that you want to link to the 1193 * static library. 1194 * PNG_USE_DLL is defined by default (no user action needed) unless one of 1195 * the other flags is defined. 1196 */ 1197 1198 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) 1199 # define PNG_DLL 1200 #endif 1201 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. 1202 * When building a static lib, default to no GLOBAL ARRAYS, but allow 1203 * command-line override 1204 */ 1205 #if defined(__CYGWIN__) 1206 # if !defined(PNG_STATIC) 1207 # if defined(PNG_USE_GLOBAL_ARRAYS) 1208 # undef PNG_USE_GLOBAL_ARRAYS 1209 # endif 1210 # if !defined(PNG_USE_LOCAL_ARRAYS) 1211 # define PNG_USE_LOCAL_ARRAYS 1212 # endif 1213 # else 1214 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) 1215 # if defined(PNG_USE_GLOBAL_ARRAYS) 1216 # undef PNG_USE_GLOBAL_ARRAYS 1217 # endif 1218 # endif 1219 # endif 1220 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1221 # define PNG_USE_LOCAL_ARRAYS 1222 # endif 1223 #endif 1224 1225 /* Do not use global arrays (helps with building DLL's) 1226 * They are no longer used in libpng itself, since version 1.0.5c, 1227 * but might be required for some pre-1.0.5c applications. 1228 */ 1229 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1230 # if defined(PNG_NO_GLOBAL_ARRAYS) || (defined(__GNUC__) && defined(PNG_DLL)) 1231 # define PNG_USE_LOCAL_ARRAYS 1232 # else 1233 # define PNG_USE_GLOBAL_ARRAYS 1234 # endif 1235 #endif 1236 1237 #if defined(__CYGWIN__) 1238 # undef PNGAPI 1239 # define PNGAPI __cdecl 1240 # undef PNG_IMPEXP 1241 # define PNG_IMPEXP 1242 #endif 1243 1244 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", 1245 * you may get warnings regarding the linkage of png_zalloc and png_zfree. 1246 * Don't ignore those warnings; you must also reset the default calling 1247 * convention in your compiler to match your PNGAPI, and you must build 1248 * zlib and your applications the same way you build libpng. 1249 */ 1250 1251 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF) 1252 # ifndef PNG_NO_MODULEDEF 1253 # define PNG_NO_MODULEDEF 1254 # endif 1255 #endif 1256 1257 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) 1258 # define PNG_IMPEXP 1259 #endif 1260 1261 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ 1262 (( defined(_Windows) || defined(_WINDOWS) || \ 1263 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) 1264 1265 # ifndef PNGAPI 1266 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) 1267 # define PNGAPI __cdecl 1268 # else 1269 # define PNGAPI _cdecl 1270 # endif 1271 # endif 1272 1273 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ 1274 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) 1275 # define PNG_IMPEXP 1276 # endif 1277 1278 # if !defined(PNG_IMPEXP) 1279 1280 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol 1281 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol 1282 1283 /* Borland/Microsoft */ 1284 # if defined(_MSC_VER) || defined(__BORLANDC__) 1285 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) 1286 # define PNG_EXPORT PNG_EXPORT_TYPE1 1287 # else 1288 # define PNG_EXPORT PNG_EXPORT_TYPE2 1289 # if defined(PNG_BUILD_DLL) 1290 # define PNG_IMPEXP __export 1291 # else 1292 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in 1293 VC++ */ 1294 # endif /* Exists in Borland C++ for 1295 C++ classes (== huge) */ 1296 # endif 1297 # endif 1298 1299 # if !defined(PNG_IMPEXP) 1300 # if defined(PNG_BUILD_DLL) 1301 # define PNG_IMPEXP __declspec(dllexport) 1302 # else 1303 # define PNG_IMPEXP __declspec(dllimport) 1304 # endif 1305 # endif 1306 # endif /* PNG_IMPEXP */ 1307 #else /* !(DLL || non-cygwin WINDOWS) */ 1308 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 1309 # ifndef PNGAPI 1310 # define PNGAPI _System 1311 # endif 1312 # else 1313 # if 0 /* ... other platforms, with other meanings */ 1314 # endif 1315 # endif 1316 #endif 1317 1318 #ifndef PNGAPI 1319 # define PNGAPI 1320 #endif 1321 #ifndef PNG_IMPEXP 1322 # define PNG_IMPEXP 1323 #endif 1324 1325 #ifdef PNG_BUILDSYMS 1326 # ifndef PNG_EXPORT 1327 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END 1328 # endif 1329 # ifdef PNG_USE_GLOBAL_ARRAYS 1330 # ifndef PNG_EXPORT_VAR 1331 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT 1332 # endif 1333 # endif 1334 #endif 1335 1336 #ifndef PNG_EXPORT 1337 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol 1338 #endif 1339 1340 #ifdef PNG_USE_GLOBAL_ARRAYS 1341 # ifndef PNG_EXPORT_VAR 1342 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type 1343 # endif 1344 #endif 1345 1346 /* User may want to use these so they are not in PNG_INTERNAL. Any library 1347 * functions that are passed far data must be model independent. 1348 */ 1349 1350 #ifndef PNG_ABORT 1351 # define PNG_ABORT() abort() 1352 #endif 1353 1354 #ifdef PNG_SETJMP_SUPPORTED 1355 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) 1356 #else 1357 # define png_jmpbuf(png_ptr) \ 1358 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) 1359 #endif 1360 1361 #if defined(USE_FAR_KEYWORD) /* memory model independent fns */ 1362 /* use this to make far-to-near assignments */ 1363 # define CHECK 1 1364 # define NOCHECK 0 1365 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) 1366 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) 1367 # define png_strcpy _fstrcpy 1368 # define png_strncpy _fstrncpy /* Added to v 1.2.6 */ 1369 # define png_strlen _fstrlen 1370 # define png_memcmp _fmemcmp /* SJT: added */ 1371 # define png_memcpy _fmemcpy 1372 # define png_memset _fmemset 1373 #else /* use the usual functions */ 1374 # define CVT_PTR(ptr) (ptr) 1375 # define CVT_PTR_NOCHECK(ptr) (ptr) 1376 # define png_strcpy strcpy 1377 # define png_strncpy strncpy /* Added to v 1.2.6 */ 1378 # define png_strlen strlen 1379 # define png_memcmp memcmp /* SJT: added */ 1380 # define png_memcpy memcpy 1381 # define png_memset memset 1382 #endif 1383 /* End of memory model independent support */ 1384 1385 /* Just a little check that someone hasn't tried to define something 1386 * contradictory. 1387 */ 1388 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) 1389 # undef PNG_ZBUF_SIZE 1390 # define PNG_ZBUF_SIZE 65536L 1391 #endif 1392 1393 #ifdef PNG_READ_SUPPORTED 1394 /* Prior to libpng-1.0.9, this block was in pngasmrd.h */ 1395 #if defined(PNG_INTERNAL) 1396 1397 /* These are the default thresholds before the MMX code kicks in; if either 1398 * rowbytes or bitdepth is below the threshold, plain C code is used. These 1399 * can be overridden at runtime via the png_set_mmx_thresholds() call in 1400 * libpng 1.2.0 and later. The values below were chosen by Intel. 1401 */ 1402 1403 #ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 1404 # define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 128 /* >= */ 1405 #endif 1406 #ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 1407 # define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 9 /* >= */ 1408 #endif 1409 1410 /* Set this in the makefile for VC++ on Pentium, not here. */ 1411 /* Platform must be Pentium. Makefile must assemble and load pngvcrd.c . 1412 * MMX will be detected at run time and used if present. 1413 */ 1414 #ifdef PNG_USE_PNGVCRD 1415 # define PNG_HAVE_ASSEMBLER_COMBINE_ROW 1416 # define PNG_HAVE_ASSEMBLER_READ_INTERLACE 1417 # define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW 1418 #endif 1419 1420 /* Set this in the makefile for gcc/as on Pentium, not here. */ 1421 /* Platform must be Pentium. Makefile must assemble and load pnggccrd.c . 1422 * MMX will be detected at run time and used if present. 1423 */ 1424 #ifdef PNG_USE_PNGGCCRD 1425 # define PNG_HAVE_ASSEMBLER_COMBINE_ROW 1426 # define PNG_HAVE_ASSEMBLER_READ_INTERLACE 1427 # define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW 1428 #endif 1429 /* - see pnggccrd.c for info about what is currently enabled */ 1430 1431 #endif /* PNG_INTERNAL */ 1432 #endif /* PNG_READ_SUPPORTED */ 1433 1434 /* Added at libpng-1.2.8 */ 1435 #endif /* PNG_VERSION_INFO_ONLY */ 1436 1437 #endif /* PNGCONF_H */ 1438