1 2 /* pngconf.h - machine configurable file for libpng 3 * 4 * libpng version 1.2.44 - June 26, 2010 5 * Copyright (c) 1998-2010 Glenn Randers-Pehrson 6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) 7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) 8 * 9 * This code is released under the libpng license. 10 * For conditions of distribution and use, see the disclaimer 11 * and license in png.h 12 */ 13 14 /* Any machine specific code is near the front of this file, so if you 15 * are configuring libpng for a machine, you may want to read the section 16 * starting here down to where it starts to typedef png_color, png_text, 17 * and png_info. 18 */ 19 20 #ifndef PNGCONF_H 21 #define PNGCONF_H 22 23 #define PNG_1_2_X 24 25 /* 26 * PNG_USER_CONFIG has to be defined on the compiler command line. This 27 * includes the resource compiler for Windows DLL configurations. 28 */ 29 #ifdef PNG_USER_CONFIG 30 # ifndef PNG_USER_PRIVATEBUILD 31 # define PNG_USER_PRIVATEBUILD 32 # endif 33 #include "pngusr.h" 34 #endif 35 36 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */ 37 #ifdef PNG_CONFIGURE_LIBPNG 38 #ifdef HAVE_CONFIG_H 39 #include "config.h" 40 #endif 41 #endif 42 43 /* 44 * Added at libpng-1.2.8 45 * 46 * If you create a private DLL you need to define in "pngusr.h" the followings: 47 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of 48 * the DLL was built> 49 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons." 50 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to 51 * distinguish your DLL from those of the official release. These 52 * correspond to the trailing letters that come after the version 53 * number and must match your private DLL name> 54 * e.g. // private DLL "libpng13gx.dll" 55 * #define PNG_USER_DLLFNAME_POSTFIX "gx" 56 * 57 * The following macros are also at your disposal if you want to complete the 58 * DLL VERSIONINFO structure. 59 * - PNG_USER_VERSIONINFO_COMMENTS 60 * - PNG_USER_VERSIONINFO_COMPANYNAME 61 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS 62 */ 63 64 #ifdef __STDC__ 65 #ifdef SPECIALBUILD 66 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\ 67 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.") 68 #endif 69 70 #ifdef PRIVATEBUILD 71 # pragma message("PRIVATEBUILD is deprecated.\ 72 Use PNG_USER_PRIVATEBUILD instead.") 73 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD 74 #endif 75 #endif /* __STDC__ */ 76 77 #ifndef PNG_VERSION_INFO_ONLY 78 79 /* End of material added to libpng-1.2.8 */ 80 81 /* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble 82 Restored at libpng-1.2.21 */ 83 #if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \ 84 !defined(PNG_WARN_UNINITIALIZED_ROW) 85 # define PNG_WARN_UNINITIALIZED_ROW 1 86 #endif 87 /* End of material added at libpng-1.2.19/1.2.21 */ 88 89 /* This is the size of the compression buffer, and thus the size of 90 * an IDAT chunk. Make this whatever size you feel is best for your 91 * machine. One of these will be allocated per png_struct. When this 92 * is full, it writes the data to the disk, and does some other 93 * calculations. Making this an extremely small size will slow 94 * the library down, but you may want to experiment to determine 95 * where it becomes significant, if you are concerned with memory 96 * usage. Note that zlib allocates at least 32Kb also. For readers, 97 * this describes the size of the buffer available to read the data in. 98 * Unless this gets smaller than the size of a row (compressed), 99 * it should not make much difference how big this is. 100 */ 101 102 #ifndef PNG_ZBUF_SIZE 103 # define PNG_ZBUF_SIZE 8192 104 #endif 105 106 /* Enable if you want a write-only libpng */ 107 108 #ifndef PNG_NO_READ_SUPPORTED 109 # define PNG_READ_SUPPORTED 110 #endif 111 112 /* Enable if you want a read-only libpng */ 113 114 #ifndef PNG_NO_WRITE_SUPPORTED 115 # define PNG_WRITE_SUPPORTED 116 #endif 117 118 /* Enabled in 1.2.41. */ 119 #ifdef PNG_ALLOW_BENIGN_ERRORS 120 # define png_benign_error png_warning 121 # define png_chunk_benign_error png_chunk_warning 122 #else 123 # ifndef PNG_BENIGN_ERRORS_SUPPORTED 124 # define png_benign_error png_error 125 # define png_chunk_benign_error png_chunk_error 126 # endif 127 #endif 128 129 /* Added in libpng-1.2.41 */ 130 #if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED) 131 # define PNG_WARNINGS_SUPPORTED 132 #endif 133 134 #if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED) 135 # define PNG_ERROR_TEXT_SUPPORTED 136 #endif 137 138 #if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED) 139 # define PNG_CHECK_cHRM_SUPPORTED 140 #endif 141 142 /* Enabled by default in 1.2.0. You can disable this if you don't need to 143 * support PNGs that are embedded in MNG datastreams 144 */ 145 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES) 146 # ifndef PNG_MNG_FEATURES_SUPPORTED 147 # define PNG_MNG_FEATURES_SUPPORTED 148 # endif 149 #endif 150 151 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED 152 # ifndef PNG_FLOATING_POINT_SUPPORTED 153 # define PNG_FLOATING_POINT_SUPPORTED 154 # endif 155 #endif 156 157 /* If you are running on a machine where you cannot allocate more 158 * than 64K of memory at once, uncomment this. While libpng will not 159 * normally need that much memory in a chunk (unless you load up a very 160 * large file), zlib needs to know how big of a chunk it can use, and 161 * libpng thus makes sure to check any memory allocation to verify it 162 * will fit into memory. 163 #define PNG_MAX_MALLOC_64K 164 */ 165 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) 166 # define PNG_MAX_MALLOC_64K 167 #endif 168 169 /* Special munging to support doing things the 'cygwin' way: 170 * 'Normal' png-on-win32 defines/defaults: 171 * PNG_BUILD_DLL -- building dll 172 * PNG_USE_DLL -- building an application, linking to dll 173 * (no define) -- building static library, or building an 174 * application and linking to the static lib 175 * 'Cygwin' defines/defaults: 176 * PNG_BUILD_DLL -- (ignored) building the dll 177 * (no define) -- (ignored) building an application, linking to the dll 178 * PNG_STATIC -- (ignored) building the static lib, or building an 179 * application that links to the static lib. 180 * ALL_STATIC -- (ignored) building various static libs, or building an 181 * application that links to the static libs. 182 * Thus, 183 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and 184 * this bit of #ifdefs will define the 'correct' config variables based on 185 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but 186 * unnecessary. 187 * 188 * Also, the precedence order is: 189 * ALL_STATIC (since we can't #undef something outside our namespace) 190 * PNG_BUILD_DLL 191 * PNG_STATIC 192 * (nothing) == PNG_USE_DLL 193 * 194 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent 195 * of auto-import in binutils, we no longer need to worry about 196 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, 197 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes 198 * to __declspec() stuff. However, we DO need to worry about 199 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults 200 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. 201 */ 202 #ifdef __CYGWIN__ 203 # ifdef ALL_STATIC 204 # ifdef PNG_BUILD_DLL 205 # undef PNG_BUILD_DLL 206 # endif 207 # ifdef PNG_USE_DLL 208 # undef PNG_USE_DLL 209 # endif 210 # ifdef PNG_DLL 211 # undef PNG_DLL 212 # endif 213 # ifndef PNG_STATIC 214 # define PNG_STATIC 215 # endif 216 # else 217 # ifdef PNG_BUILD_DLL 218 # ifdef PNG_STATIC 219 # undef PNG_STATIC 220 # endif 221 # ifdef PNG_USE_DLL 222 # undef PNG_USE_DLL 223 # endif 224 # ifndef PNG_DLL 225 # define PNG_DLL 226 # endif 227 # else 228 # ifdef PNG_STATIC 229 # ifdef PNG_USE_DLL 230 # undef PNG_USE_DLL 231 # endif 232 # ifdef PNG_DLL 233 # undef PNG_DLL 234 # endif 235 # else 236 # ifndef PNG_USE_DLL 237 # define PNG_USE_DLL 238 # endif 239 # ifndef PNG_DLL 240 # define PNG_DLL 241 # endif 242 # endif 243 # endif 244 # endif 245 #endif 246 247 /* This protects us against compilers that run on a windowing system 248 * and thus don't have or would rather us not use the stdio types: 249 * stdin, stdout, and stderr. The only one currently used is stderr 250 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will 251 * prevent these from being compiled and used. #defining PNG_NO_STDIO 252 * will also prevent these, plus will prevent the entire set of stdio 253 * macros and functions (FILE *, printf, etc.) from being compiled and used, 254 * unless (PNG_DEBUG > 0) has been #defined. 255 * 256 * #define PNG_NO_CONSOLE_IO 257 * #define PNG_NO_STDIO 258 */ 259 260 #if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED) 261 # define PNG_STDIO_SUPPORTED 262 #endif 263 264 #ifdef _WIN32_WCE 265 # include <windows.h> 266 /* Console I/O functions are not supported on WindowsCE */ 267 # define PNG_NO_CONSOLE_IO 268 /* abort() may not be supported on some/all Windows CE platforms */ 269 # define PNG_ABORT() exit(-1) 270 # ifdef PNG_DEBUG 271 # undef PNG_DEBUG 272 # endif 273 #endif 274 275 #ifdef PNG_BUILD_DLL 276 # ifndef PNG_CONSOLE_IO_SUPPORTED 277 # ifndef PNG_NO_CONSOLE_IO 278 # define PNG_NO_CONSOLE_IO 279 # endif 280 # endif 281 #endif 282 283 # ifdef PNG_NO_STDIO 284 # ifndef PNG_NO_CONSOLE_IO 285 # define PNG_NO_CONSOLE_IO 286 # endif 287 # ifdef PNG_DEBUG 288 # if (PNG_DEBUG > 0) 289 # include <stdio.h> 290 # endif 291 # endif 292 # else 293 # ifndef _WIN32_WCE 294 /* "stdio.h" functions are not supported on WindowsCE */ 295 # include <stdio.h> 296 # endif 297 # endif 298 299 #if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED) 300 # define PNG_CONSOLE_IO_SUPPORTED 301 #endif 302 303 /* This macro protects us against machines that don't have function 304 * prototypes (ie K&R style headers). If your compiler does not handle 305 * function prototypes, define this macro and use the included ansi2knr. 306 * I've always been able to use _NO_PROTO as the indicator, but you may 307 * need to drag the empty declaration out in front of here, or change the 308 * ifdef to suit your own needs. 309 */ 310 #ifndef PNGARG 311 312 #ifdef OF /* zlib prototype munger */ 313 # define PNGARG(arglist) OF(arglist) 314 #else 315 316 #ifdef _NO_PROTO 317 # define PNGARG(arglist) () 318 # ifndef PNG_TYPECAST_NULL 319 # define PNG_TYPECAST_NULL 320 # endif 321 #else 322 # define PNGARG(arglist) arglist 323 #endif /* _NO_PROTO */ 324 325 326 #endif /* OF */ 327 328 #endif /* PNGARG */ 329 330 /* Try to determine if we are compiling on a Mac. Note that testing for 331 * just __MWERKS__ is not good enough, because the Codewarrior is now used 332 * on non-Mac platforms. 333 */ 334 #ifndef MACOS 335 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ 336 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) 337 # define MACOS 338 # endif 339 #endif 340 341 /* enough people need this for various reasons to include it here */ 342 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) 343 # include <sys/types.h> 344 #endif 345 346 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) 347 # define PNG_SETJMP_SUPPORTED 348 #endif 349 350 #ifdef PNG_SETJMP_SUPPORTED 351 /* This is an attempt to force a single setjmp behaviour on Linux. If 352 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. 353 * 354 * You can bypass this test if you know that your application uses exactly 355 * the same setjmp.h that was included when libpng was built. Only define 356 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the 357 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK 358 * while building a separate libpng library for general use. 359 */ 360 361 # ifndef PNG_SKIP_SETJMP_CHECK 362 # ifdef __linux__ 363 # ifdef _BSD_SOURCE 364 # define PNG_SAVE_BSD_SOURCE 365 # undef _BSD_SOURCE 366 # endif 367 # ifdef _SETJMP_H 368 /* If you encounter a compiler error here, see the explanation 369 * near the end of INSTALL. 370 */ 371 __pngconf.h__ in libpng already includes setjmp.h; 372 __dont__ include it again.; 373 # endif 374 # endif /* __linux__ */ 375 # endif /* PNG_SKIP_SETJMP_CHECK */ 376 377 /* include setjmp.h for error handling */ 378 # include <setjmp.h> 379 380 # ifdef __linux__ 381 # ifdef PNG_SAVE_BSD_SOURCE 382 # ifndef _BSD_SOURCE 383 # define _BSD_SOURCE 384 # endif 385 # undef PNG_SAVE_BSD_SOURCE 386 # endif 387 # endif /* __linux__ */ 388 #endif /* PNG_SETJMP_SUPPORTED */ 389 390 #ifdef BSD 391 # include <strings.h> 392 #else 393 # include <string.h> 394 #endif 395 396 /* Other defines for things like memory and the like can go here. */ 397 #ifdef PNG_INTERNAL 398 399 #include <stdlib.h> 400 401 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which 402 * aren't usually used outside the library (as far as I know), so it is 403 * debatable if they should be exported at all. In the future, when it is 404 * possible to have run-time registry of chunk-handling functions, some of 405 * these will be made available again. 406 #define PNG_EXTERN extern 407 */ 408 #define PNG_EXTERN 409 410 /* Other defines specific to compilers can go here. Try to keep 411 * them inside an appropriate ifdef/endif pair for portability. 412 */ 413 414 #ifdef PNG_FLOATING_POINT_SUPPORTED 415 # ifdef MACOS 416 /* We need to check that <math.h> hasn't already been included earlier 417 * as it seems it doesn't agree with <fp.h>, yet we should really use 418 * <fp.h> if possible. 419 */ 420 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) 421 # include <fp.h> 422 # endif 423 # else 424 # include <math.h> 425 # endif 426 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) 427 /* Amiga SAS/C: We must include builtin FPU functions when compiling using 428 * MATH=68881 429 */ 430 # include <m68881.h> 431 # endif 432 #endif 433 434 /* Codewarrior on NT has linking problems without this. */ 435 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) 436 # define PNG_ALWAYS_EXTERN 437 #endif 438 439 /* This provides the non-ANSI (far) memory allocation routines. */ 440 #if defined(__TURBOC__) && defined(__MSDOS__) 441 # include <mem.h> 442 # include <alloc.h> 443 #endif 444 445 /* I have no idea why is this necessary... */ 446 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ 447 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) 448 # include <malloc.h> 449 #endif 450 451 /* This controls how fine the dithering gets. As this allocates 452 * a largish chunk of memory (32K), those who are not as concerned 453 * with dithering quality can decrease some or all of these. 454 */ 455 #ifndef PNG_DITHER_RED_BITS 456 # define PNG_DITHER_RED_BITS 5 457 #endif 458 #ifndef PNG_DITHER_GREEN_BITS 459 # define PNG_DITHER_GREEN_BITS 5 460 #endif 461 #ifndef PNG_DITHER_BLUE_BITS 462 # define PNG_DITHER_BLUE_BITS 5 463 #endif 464 465 /* This controls how fine the gamma correction becomes when you 466 * are only interested in 8 bits anyway. Increasing this value 467 * results in more memory being used, and more pow() functions 468 * being called to fill in the gamma tables. Don't set this value 469 * less then 8, and even that may not work (I haven't tested it). 470 */ 471 472 #ifndef PNG_MAX_GAMMA_8 473 # define PNG_MAX_GAMMA_8 11 474 #endif 475 476 /* This controls how much a difference in gamma we can tolerate before 477 * we actually start doing gamma conversion. 478 */ 479 #ifndef PNG_GAMMA_THRESHOLD 480 # define PNG_GAMMA_THRESHOLD 0.05 481 #endif 482 483 #endif /* PNG_INTERNAL */ 484 485 /* The following uses const char * instead of char * for error 486 * and warning message functions, so some compilers won't complain. 487 * If you do not want to use const, define PNG_NO_CONST here. 488 */ 489 490 #ifndef PNG_NO_CONST 491 # define PNG_CONST const 492 #else 493 # define PNG_CONST 494 #endif 495 496 /* The following defines give you the ability to remove code from the 497 * library that you will not be using. I wish I could figure out how to 498 * automate this, but I can't do that without making it seriously hard 499 * on the users. So if you are not using an ability, change the #define 500 * to and #undef, and that part of the library will not be compiled. If 501 * your linker can't find a function, you may want to make sure the 502 * ability is defined here. Some of these depend upon some others being 503 * defined. I haven't figured out all the interactions here, so you may 504 * have to experiment awhile to get everything to compile. If you are 505 * creating or using a shared library, you probably shouldn't touch this, 506 * as it will affect the size of the structures, and this will cause bad 507 * things to happen if the library and/or application ever change. 508 */ 509 510 /* Any features you will not be using can be undef'ed here */ 511 512 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user 513 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS 514 * on the compile line, then pick and choose which ones to define without 515 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED 516 * if you only want to have a png-compliant reader/writer but don't need 517 * any of the extra transformations. This saves about 80 kbytes in a 518 * typical installation of the library. (PNG_NO_* form added in version 519 * 1.0.1c, for consistency) 520 */ 521 522 /* The size of the png_text structure changed in libpng-1.0.6 when 523 * iTXt support was added. iTXt support was turned off by default through 524 * libpng-1.2.x, to support old apps that malloc the png_text structure 525 * instead of calling png_set_text() and letting libpng malloc it. It 526 * will be turned on by default in libpng-1.4.0. 527 */ 528 529 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 530 # ifndef PNG_NO_iTXt_SUPPORTED 531 # define PNG_NO_iTXt_SUPPORTED 532 # endif 533 # ifndef PNG_NO_READ_iTXt 534 # define PNG_NO_READ_iTXt 535 # endif 536 # ifndef PNG_NO_WRITE_iTXt 537 # define PNG_NO_WRITE_iTXt 538 # endif 539 #endif 540 541 #if !defined(PNG_NO_iTXt_SUPPORTED) 542 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) 543 # define PNG_READ_iTXt 544 # endif 545 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) 546 # define PNG_WRITE_iTXt 547 # endif 548 #endif 549 550 /* The following support, added after version 1.0.0, can be turned off here en 551 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility 552 * with old applications that require the length of png_struct and png_info 553 * to remain unchanged. 554 */ 555 556 #ifdef PNG_LEGACY_SUPPORTED 557 # define PNG_NO_FREE_ME 558 # define PNG_NO_READ_UNKNOWN_CHUNKS 559 # define PNG_NO_WRITE_UNKNOWN_CHUNKS 560 # define PNG_NO_HANDLE_AS_UNKNOWN 561 # define PNG_NO_READ_USER_CHUNKS 562 # define PNG_NO_READ_iCCP 563 # define PNG_NO_WRITE_iCCP 564 # define PNG_NO_READ_iTXt 565 # define PNG_NO_WRITE_iTXt 566 # define PNG_NO_READ_sCAL 567 # define PNG_NO_WRITE_sCAL 568 # define PNG_NO_READ_sPLT 569 # define PNG_NO_WRITE_sPLT 570 # define PNG_NO_INFO_IMAGE 571 # define PNG_NO_READ_RGB_TO_GRAY 572 # define PNG_NO_READ_USER_TRANSFORM 573 # define PNG_NO_WRITE_USER_TRANSFORM 574 # define PNG_NO_USER_MEM 575 # define PNG_NO_READ_EMPTY_PLTE 576 # define PNG_NO_MNG_FEATURES 577 # define PNG_NO_FIXED_POINT_SUPPORTED 578 #endif 579 580 /* Ignore attempt to turn off both floating and fixed point support */ 581 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ 582 !defined(PNG_NO_FIXED_POINT_SUPPORTED) 583 # define PNG_FIXED_POINT_SUPPORTED 584 #endif 585 586 #ifndef PNG_NO_FREE_ME 587 # define PNG_FREE_ME_SUPPORTED 588 #endif 589 590 #ifdef PNG_READ_SUPPORTED 591 592 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ 593 !defined(PNG_NO_READ_TRANSFORMS) 594 # define PNG_READ_TRANSFORMS_SUPPORTED 595 #endif 596 597 #ifdef PNG_READ_TRANSFORMS_SUPPORTED 598 # ifndef PNG_NO_READ_EXPAND 599 # define PNG_READ_EXPAND_SUPPORTED 600 # endif 601 # ifndef PNG_NO_READ_SHIFT 602 # define PNG_READ_SHIFT_SUPPORTED 603 # endif 604 # ifndef PNG_NO_READ_PACK 605 # define PNG_READ_PACK_SUPPORTED 606 # endif 607 # ifndef PNG_NO_READ_BGR 608 # define PNG_READ_BGR_SUPPORTED 609 # endif 610 # ifndef PNG_NO_READ_SWAP 611 # define PNG_READ_SWAP_SUPPORTED 612 # endif 613 # ifndef PNG_NO_READ_PACKSWAP 614 # define PNG_READ_PACKSWAP_SUPPORTED 615 # endif 616 # ifndef PNG_NO_READ_INVERT 617 # define PNG_READ_INVERT_SUPPORTED 618 # endif 619 # ifndef PNG_NO_READ_DITHER 620 # define PNG_READ_DITHER_SUPPORTED 621 # endif 622 # ifndef PNG_NO_READ_BACKGROUND 623 # define PNG_READ_BACKGROUND_SUPPORTED 624 # endif 625 # ifndef PNG_NO_READ_16_TO_8 626 # define PNG_READ_16_TO_8_SUPPORTED 627 # endif 628 # ifndef PNG_NO_READ_FILLER 629 # define PNG_READ_FILLER_SUPPORTED 630 # endif 631 # ifndef PNG_NO_READ_GAMMA 632 # define PNG_READ_GAMMA_SUPPORTED 633 # endif 634 # ifndef PNG_NO_READ_GRAY_TO_RGB 635 # define PNG_READ_GRAY_TO_RGB_SUPPORTED 636 # endif 637 # ifndef PNG_NO_READ_SWAP_ALPHA 638 # define PNG_READ_SWAP_ALPHA_SUPPORTED 639 # endif 640 # ifndef PNG_NO_READ_INVERT_ALPHA 641 # define PNG_READ_INVERT_ALPHA_SUPPORTED 642 # endif 643 # ifndef PNG_NO_READ_STRIP_ALPHA 644 # define PNG_READ_STRIP_ALPHA_SUPPORTED 645 # endif 646 # ifndef PNG_NO_READ_USER_TRANSFORM 647 # define PNG_READ_USER_TRANSFORM_SUPPORTED 648 # endif 649 # ifndef PNG_NO_READ_RGB_TO_GRAY 650 # define PNG_READ_RGB_TO_GRAY_SUPPORTED 651 # endif 652 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */ 653 654 /* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */ 655 #if !defined(PNG_NO_PROGRESSIVE_READ) && \ 656 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */ 657 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ 658 #endif /* about interlacing capability! You'll */ 659 /* still have interlacing unless you change the following define: */ 660 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */ 661 662 /* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */ 663 #if !defined(PNG_NO_SEQUENTIAL_READ) && \ 664 !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \ 665 !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED) 666 # define PNG_SEQUENTIAL_READ_SUPPORTED 667 #endif 668 669 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */ 670 671 #ifndef PNG_NO_READ_COMPOSITE_NODIV 672 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ 673 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ 674 # endif 675 #endif 676 677 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 678 /* Deprecated, will be removed from version 2.0.0. 679 Use PNG_MNG_FEATURES_SUPPORTED instead. */ 680 #ifndef PNG_NO_READ_EMPTY_PLTE 681 # define PNG_READ_EMPTY_PLTE_SUPPORTED 682 #endif 683 #endif 684 685 #endif /* PNG_READ_SUPPORTED */ 686 687 #ifdef PNG_WRITE_SUPPORTED 688 689 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ 690 !defined(PNG_NO_WRITE_TRANSFORMS) 691 # define PNG_WRITE_TRANSFORMS_SUPPORTED 692 #endif 693 694 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED 695 # ifndef PNG_NO_WRITE_SHIFT 696 # define PNG_WRITE_SHIFT_SUPPORTED 697 # endif 698 # ifndef PNG_NO_WRITE_PACK 699 # define PNG_WRITE_PACK_SUPPORTED 700 # endif 701 # ifndef PNG_NO_WRITE_BGR 702 # define PNG_WRITE_BGR_SUPPORTED 703 # endif 704 # ifndef PNG_NO_WRITE_SWAP 705 # define PNG_WRITE_SWAP_SUPPORTED 706 # endif 707 # ifndef PNG_NO_WRITE_PACKSWAP 708 # define PNG_WRITE_PACKSWAP_SUPPORTED 709 # endif 710 # ifndef PNG_NO_WRITE_INVERT 711 # define PNG_WRITE_INVERT_SUPPORTED 712 # endif 713 # ifndef PNG_NO_WRITE_FILLER 714 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ 715 # endif 716 # ifndef PNG_NO_WRITE_SWAP_ALPHA 717 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED 718 # endif 719 #ifndef PNG_1_0_X 720 # ifndef PNG_NO_WRITE_INVERT_ALPHA 721 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED 722 # endif 723 #endif 724 # ifndef PNG_NO_WRITE_USER_TRANSFORM 725 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED 726 # endif 727 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ 728 729 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \ 730 !defined(PNG_WRITE_INTERLACING_SUPPORTED) 731 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant 732 encoders, but can cause trouble 733 if left undefined */ 734 #endif 735 736 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ 737 !defined(PNG_WRITE_WEIGHTED_FILTER) && \ 738 defined(PNG_FLOATING_POINT_SUPPORTED) 739 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED 740 #endif 741 742 #ifndef PNG_NO_WRITE_FLUSH 743 # define PNG_WRITE_FLUSH_SUPPORTED 744 #endif 745 746 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 747 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ 748 #ifndef PNG_NO_WRITE_EMPTY_PLTE 749 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED 750 #endif 751 #endif 752 753 #endif /* PNG_WRITE_SUPPORTED */ 754 755 #ifndef PNG_1_0_X 756 # ifndef PNG_NO_ERROR_NUMBERS 757 # define PNG_ERROR_NUMBERS_SUPPORTED 758 # endif 759 #endif /* PNG_1_0_X */ 760 761 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 762 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) 763 # ifndef PNG_NO_USER_TRANSFORM_PTR 764 # define PNG_USER_TRANSFORM_PTR_SUPPORTED 765 # endif 766 #endif 767 768 #ifndef PNG_NO_STDIO 769 # define PNG_TIME_RFC1123_SUPPORTED 770 #endif 771 772 /* This adds extra functions in pngget.c for accessing data from the 773 * info pointer (added in version 0.99) 774 * png_get_image_width() 775 * png_get_image_height() 776 * png_get_bit_depth() 777 * png_get_color_type() 778 * png_get_compression_type() 779 * png_get_filter_type() 780 * png_get_interlace_type() 781 * png_get_pixel_aspect_ratio() 782 * png_get_pixels_per_meter() 783 * png_get_x_offset_pixels() 784 * png_get_y_offset_pixels() 785 * png_get_x_offset_microns() 786 * png_get_y_offset_microns() 787 */ 788 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) 789 # define PNG_EASY_ACCESS_SUPPORTED 790 #endif 791 792 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 793 * and removed from version 1.2.20. The following will be removed 794 * from libpng-1.4.0 795 */ 796 797 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE) 798 # ifndef PNG_OPTIMIZED_CODE_SUPPORTED 799 # define PNG_OPTIMIZED_CODE_SUPPORTED 800 # endif 801 #endif 802 803 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE) 804 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED 805 # define PNG_ASSEMBLER_CODE_SUPPORTED 806 # endif 807 808 # if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4) 809 /* work around 64-bit gcc compiler bugs in gcc-3.x */ 810 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 811 # define PNG_NO_MMX_CODE 812 # endif 813 # endif 814 815 # ifdef __APPLE__ 816 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 817 # define PNG_NO_MMX_CODE 818 # endif 819 # endif 820 821 # if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh)) 822 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 823 # define PNG_NO_MMX_CODE 824 # endif 825 # endif 826 827 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 828 # define PNG_MMX_CODE_SUPPORTED 829 # endif 830 831 #endif 832 /* end of obsolete code to be removed from libpng-1.4.0 */ 833 834 /* Added at libpng-1.2.0 */ 835 #ifndef PNG_1_0_X 836 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) 837 # define PNG_USER_MEM_SUPPORTED 838 #endif 839 #endif /* PNG_1_0_X */ 840 841 /* Added at libpng-1.2.6 */ 842 #ifndef PNG_1_0_X 843 # ifndef PNG_SET_USER_LIMITS_SUPPORTED 844 # ifndef PNG_NO_SET_USER_LIMITS 845 # define PNG_SET_USER_LIMITS_SUPPORTED 846 # endif 847 # endif 848 #endif /* PNG_1_0_X */ 849 850 /* Added at libpng-1.0.53 and 1.2.43 */ 851 #ifndef PNG_USER_LIMITS_SUPPORTED 852 # ifndef PNG_NO_USER_LIMITS 853 # define PNG_USER_LIMITS_SUPPORTED 854 # endif 855 #endif 856 857 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter 858 * how large, set these limits to 0x7fffffffL 859 */ 860 #ifndef PNG_USER_WIDTH_MAX 861 # define PNG_USER_WIDTH_MAX 1000000L 862 #endif 863 #ifndef PNG_USER_HEIGHT_MAX 864 # define PNG_USER_HEIGHT_MAX 1000000L 865 #endif 866 867 /* Added at libpng-1.2.43. To accept all valid PNGs no matter 868 * how large, set these two limits to 0. 869 */ 870 #ifndef PNG_USER_CHUNK_CACHE_MAX 871 # define PNG_USER_CHUNK_CACHE_MAX 0 872 #endif 873 874 /* Added at libpng-1.2.43 */ 875 #ifndef PNG_USER_CHUNK_MALLOC_MAX 876 # define PNG_USER_CHUNK_MALLOC_MAX 0 877 #endif 878 879 #ifndef PNG_LITERAL_SHARP 880 # define PNG_LITERAL_SHARP 0x23 881 #endif 882 #ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET 883 # define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b 884 #endif 885 #ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET 886 # define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d 887 #endif 888 889 /* Added at libpng-1.2.34 */ 890 #ifndef PNG_STRING_NEWLINE 891 #define PNG_STRING_NEWLINE "\n" 892 #endif 893 894 /* These are currently experimental features, define them if you want */ 895 896 /* very little testing */ 897 /* 898 #ifdef PNG_READ_SUPPORTED 899 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 900 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 901 # endif 902 #endif 903 */ 904 905 /* This is only for PowerPC big-endian and 680x0 systems */ 906 /* some testing */ 907 /* 908 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED 909 # define PNG_READ_BIG_ENDIAN_SUPPORTED 910 #endif 911 */ 912 913 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */ 914 /* 915 #define PNG_NO_POINTER_INDEXING 916 */ 917 918 #if !defined(PNG_NO_POINTER_INDEXING) && \ 919 !defined(PNG_POINTER_INDEXING_SUPPORTED) 920 # define PNG_POINTER_INDEXING_SUPPORTED 921 #endif 922 923 /* These functions are turned off by default, as they will be phased out. */ 924 /* 925 #define PNG_USELESS_TESTS_SUPPORTED 926 #define PNG_CORRECT_PALETTE_SUPPORTED 927 */ 928 929 /* Any chunks you are not interested in, you can undef here. The 930 * ones that allocate memory may be expecially important (hIST, 931 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info 932 * a bit smaller. 933 */ 934 935 #if defined(PNG_READ_SUPPORTED) && \ 936 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 937 !defined(PNG_NO_READ_ANCILLARY_CHUNKS) 938 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 939 #endif 940 941 #if defined(PNG_WRITE_SUPPORTED) && \ 942 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 943 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) 944 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 945 #endif 946 947 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 948 949 #ifdef PNG_NO_READ_TEXT 950 # define PNG_NO_READ_iTXt 951 # define PNG_NO_READ_tEXt 952 # define PNG_NO_READ_zTXt 953 #endif 954 #ifndef PNG_NO_READ_bKGD 955 # define PNG_READ_bKGD_SUPPORTED 956 # define PNG_bKGD_SUPPORTED 957 #endif 958 #ifndef PNG_NO_READ_cHRM 959 # define PNG_READ_cHRM_SUPPORTED 960 # define PNG_cHRM_SUPPORTED 961 #endif 962 #ifndef PNG_NO_READ_gAMA 963 # define PNG_READ_gAMA_SUPPORTED 964 # define PNG_gAMA_SUPPORTED 965 #endif 966 #ifndef PNG_NO_READ_hIST 967 # define PNG_READ_hIST_SUPPORTED 968 # define PNG_hIST_SUPPORTED 969 #endif 970 #ifndef PNG_NO_READ_iCCP 971 # define PNG_READ_iCCP_SUPPORTED 972 # define PNG_iCCP_SUPPORTED 973 #endif 974 #ifndef PNG_NO_READ_iTXt 975 # ifndef PNG_READ_iTXt_SUPPORTED 976 # define PNG_READ_iTXt_SUPPORTED 977 # endif 978 # ifndef PNG_iTXt_SUPPORTED 979 # define PNG_iTXt_SUPPORTED 980 # endif 981 #endif 982 #ifndef PNG_NO_READ_oFFs 983 # define PNG_READ_oFFs_SUPPORTED 984 # define PNG_oFFs_SUPPORTED 985 #endif 986 #ifndef PNG_NO_READ_pCAL 987 # define PNG_READ_pCAL_SUPPORTED 988 # define PNG_pCAL_SUPPORTED 989 #endif 990 #ifndef PNG_NO_READ_sCAL 991 # define PNG_READ_sCAL_SUPPORTED 992 # define PNG_sCAL_SUPPORTED 993 #endif 994 #ifndef PNG_NO_READ_pHYs 995 # define PNG_READ_pHYs_SUPPORTED 996 # define PNG_pHYs_SUPPORTED 997 #endif 998 #ifndef PNG_NO_READ_sBIT 999 # define PNG_READ_sBIT_SUPPORTED 1000 # define PNG_sBIT_SUPPORTED 1001 #endif 1002 #ifndef PNG_NO_READ_sPLT 1003 # define PNG_READ_sPLT_SUPPORTED 1004 # define PNG_sPLT_SUPPORTED 1005 #endif 1006 #ifndef PNG_NO_READ_sRGB 1007 # define PNG_READ_sRGB_SUPPORTED 1008 # define PNG_sRGB_SUPPORTED 1009 #endif 1010 #ifndef PNG_NO_READ_tEXt 1011 # define PNG_READ_tEXt_SUPPORTED 1012 # define PNG_tEXt_SUPPORTED 1013 #endif 1014 #ifndef PNG_NO_READ_tIME 1015 # define PNG_READ_tIME_SUPPORTED 1016 # define PNG_tIME_SUPPORTED 1017 #endif 1018 #ifndef PNG_NO_READ_tRNS 1019 # define PNG_READ_tRNS_SUPPORTED 1020 # define PNG_tRNS_SUPPORTED 1021 #endif 1022 #ifndef PNG_NO_READ_zTXt 1023 # define PNG_READ_zTXt_SUPPORTED 1024 # define PNG_zTXt_SUPPORTED 1025 #endif 1026 #ifndef PNG_NO_READ_OPT_PLTE 1027 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ 1028 #endif /* optional PLTE chunk in RGB and RGBA images */ 1029 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ 1030 defined(PNG_READ_zTXt_SUPPORTED) 1031 # define PNG_READ_TEXT_SUPPORTED 1032 # define PNG_TEXT_SUPPORTED 1033 #endif 1034 1035 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ 1036 1037 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS 1038 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED 1039 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1040 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 1041 # endif 1042 #endif 1043 #if !defined(PNG_NO_READ_USER_CHUNKS) && \ 1044 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) 1045 # define PNG_READ_USER_CHUNKS_SUPPORTED 1046 # define PNG_USER_CHUNKS_SUPPORTED 1047 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS 1048 # undef PNG_NO_READ_UNKNOWN_CHUNKS 1049 # endif 1050 # ifdef PNG_NO_HANDLE_AS_UNKNOWN 1051 # undef PNG_NO_HANDLE_AS_UNKNOWN 1052 # endif 1053 #endif 1054 1055 #ifndef PNG_NO_HANDLE_AS_UNKNOWN 1056 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1057 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1058 # endif 1059 #endif 1060 1061 #ifdef PNG_WRITE_SUPPORTED 1062 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 1063 1064 #ifdef PNG_NO_WRITE_TEXT 1065 # define PNG_NO_WRITE_iTXt 1066 # define PNG_NO_WRITE_tEXt 1067 # define PNG_NO_WRITE_zTXt 1068 #endif 1069 #ifndef PNG_NO_WRITE_bKGD 1070 # define PNG_WRITE_bKGD_SUPPORTED 1071 # ifndef PNG_bKGD_SUPPORTED 1072 # define PNG_bKGD_SUPPORTED 1073 # endif 1074 #endif 1075 #ifndef PNG_NO_WRITE_cHRM 1076 # define PNG_WRITE_cHRM_SUPPORTED 1077 # ifndef PNG_cHRM_SUPPORTED 1078 # define PNG_cHRM_SUPPORTED 1079 # endif 1080 #endif 1081 #ifndef PNG_NO_WRITE_gAMA 1082 # define PNG_WRITE_gAMA_SUPPORTED 1083 # ifndef PNG_gAMA_SUPPORTED 1084 # define PNG_gAMA_SUPPORTED 1085 # endif 1086 #endif 1087 #ifndef PNG_NO_WRITE_hIST 1088 # define PNG_WRITE_hIST_SUPPORTED 1089 # ifndef PNG_hIST_SUPPORTED 1090 # define PNG_hIST_SUPPORTED 1091 # endif 1092 #endif 1093 #ifndef PNG_NO_WRITE_iCCP 1094 # define PNG_WRITE_iCCP_SUPPORTED 1095 # ifndef PNG_iCCP_SUPPORTED 1096 # define PNG_iCCP_SUPPORTED 1097 # endif 1098 #endif 1099 #ifndef PNG_NO_WRITE_iTXt 1100 # ifndef PNG_WRITE_iTXt_SUPPORTED 1101 # define PNG_WRITE_iTXt_SUPPORTED 1102 # endif 1103 # ifndef PNG_iTXt_SUPPORTED 1104 # define PNG_iTXt_SUPPORTED 1105 # endif 1106 #endif 1107 #ifndef PNG_NO_WRITE_oFFs 1108 # define PNG_WRITE_oFFs_SUPPORTED 1109 # ifndef PNG_oFFs_SUPPORTED 1110 # define PNG_oFFs_SUPPORTED 1111 # endif 1112 #endif 1113 #ifndef PNG_NO_WRITE_pCAL 1114 # define PNG_WRITE_pCAL_SUPPORTED 1115 # ifndef PNG_pCAL_SUPPORTED 1116 # define PNG_pCAL_SUPPORTED 1117 # endif 1118 #endif 1119 #ifndef PNG_NO_WRITE_sCAL 1120 # define PNG_WRITE_sCAL_SUPPORTED 1121 # ifndef PNG_sCAL_SUPPORTED 1122 # define PNG_sCAL_SUPPORTED 1123 # endif 1124 #endif 1125 #ifndef PNG_NO_WRITE_pHYs 1126 # define PNG_WRITE_pHYs_SUPPORTED 1127 # ifndef PNG_pHYs_SUPPORTED 1128 # define PNG_pHYs_SUPPORTED 1129 # endif 1130 #endif 1131 #ifndef PNG_NO_WRITE_sBIT 1132 # define PNG_WRITE_sBIT_SUPPORTED 1133 # ifndef PNG_sBIT_SUPPORTED 1134 # define PNG_sBIT_SUPPORTED 1135 # endif 1136 #endif 1137 #ifndef PNG_NO_WRITE_sPLT 1138 # define PNG_WRITE_sPLT_SUPPORTED 1139 # ifndef PNG_sPLT_SUPPORTED 1140 # define PNG_sPLT_SUPPORTED 1141 # endif 1142 #endif 1143 #ifndef PNG_NO_WRITE_sRGB 1144 # define PNG_WRITE_sRGB_SUPPORTED 1145 # ifndef PNG_sRGB_SUPPORTED 1146 # define PNG_sRGB_SUPPORTED 1147 # endif 1148 #endif 1149 #ifndef PNG_NO_WRITE_tEXt 1150 # define PNG_WRITE_tEXt_SUPPORTED 1151 # ifndef PNG_tEXt_SUPPORTED 1152 # define PNG_tEXt_SUPPORTED 1153 # endif 1154 #endif 1155 #ifndef PNG_NO_WRITE_tIME 1156 # define PNG_WRITE_tIME_SUPPORTED 1157 # ifndef PNG_tIME_SUPPORTED 1158 # define PNG_tIME_SUPPORTED 1159 # endif 1160 #endif 1161 #ifndef PNG_NO_WRITE_tRNS 1162 # define PNG_WRITE_tRNS_SUPPORTED 1163 # ifndef PNG_tRNS_SUPPORTED 1164 # define PNG_tRNS_SUPPORTED 1165 # endif 1166 #endif 1167 #ifndef PNG_NO_WRITE_zTXt 1168 # define PNG_WRITE_zTXt_SUPPORTED 1169 # ifndef PNG_zTXt_SUPPORTED 1170 # define PNG_zTXt_SUPPORTED 1171 # endif 1172 #endif 1173 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ 1174 defined(PNG_WRITE_zTXt_SUPPORTED) 1175 # define PNG_WRITE_TEXT_SUPPORTED 1176 # ifndef PNG_TEXT_SUPPORTED 1177 # define PNG_TEXT_SUPPORTED 1178 # endif 1179 #endif 1180 1181 #ifdef PNG_WRITE_tIME_SUPPORTED 1182 # ifndef PNG_NO_CONVERT_tIME 1183 # ifndef _WIN32_WCE 1184 /* The "tm" structure is not supported on WindowsCE */ 1185 # ifndef PNG_CONVERT_tIME_SUPPORTED 1186 # define PNG_CONVERT_tIME_SUPPORTED 1187 # endif 1188 # endif 1189 # endif 1190 #endif 1191 1192 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ 1193 1194 #if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED) 1195 # define PNG_WRITE_FILTER_SUPPORTED 1196 #endif 1197 1198 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS 1199 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1200 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1201 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 1202 # endif 1203 #endif 1204 1205 #ifndef PNG_NO_HANDLE_AS_UNKNOWN 1206 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1207 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1208 # endif 1209 #endif 1210 #endif /* PNG_WRITE_SUPPORTED */ 1211 1212 /* Turn this off to disable png_read_png() and 1213 * png_write_png() and leave the row_pointers member 1214 * out of the info structure. 1215 */ 1216 #ifndef PNG_NO_INFO_IMAGE 1217 # define PNG_INFO_IMAGE_SUPPORTED 1218 #endif 1219 1220 /* Need the time information for converting tIME chunks */ 1221 #ifdef PNG_CONVERT_tIME_SUPPORTED 1222 /* "time.h" functions are not supported on WindowsCE */ 1223 # include <time.h> 1224 #endif 1225 1226 /* Some typedefs to get us started. These should be safe on most of the 1227 * common platforms. The typedefs should be at least as large as the 1228 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they 1229 * don't have to be exactly that size. Some compilers dislike passing 1230 * unsigned shorts as function parameters, so you may be better off using 1231 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may 1232 * want to have unsigned int for png_uint_32 instead of unsigned long. 1233 */ 1234 1235 typedef unsigned long png_uint_32; 1236 typedef long png_int_32; 1237 typedef unsigned short png_uint_16; 1238 typedef short png_int_16; 1239 typedef unsigned char png_byte; 1240 1241 /* This is usually size_t. It is typedef'ed just in case you need it to 1242 change (I'm not sure if you will or not, so I thought I'd be safe) */ 1243 #ifdef PNG_SIZE_T 1244 typedef PNG_SIZE_T png_size_t; 1245 # define png_sizeof(x) png_convert_size(sizeof(x)) 1246 #else 1247 typedef size_t png_size_t; 1248 # define png_sizeof(x) sizeof(x) 1249 #endif 1250 1251 /* The following is needed for medium model support. It cannot be in the 1252 * PNG_INTERNAL section. Needs modification for other compilers besides 1253 * MSC. Model independent support declares all arrays and pointers to be 1254 * large using the far keyword. The zlib version used must also support 1255 * model independent data. As of version zlib 1.0.4, the necessary changes 1256 * have been made in zlib. The USE_FAR_KEYWORD define triggers other 1257 * changes that are needed. (Tim Wegner) 1258 */ 1259 1260 /* Separate compiler dependencies (problem here is that zlib.h always 1261 defines FAR. (SJT) */ 1262 #ifdef __BORLANDC__ 1263 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) 1264 # define LDATA 1 1265 # else 1266 # define LDATA 0 1267 # endif 1268 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ 1269 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) 1270 # define PNG_MAX_MALLOC_64K 1271 # if (LDATA != 1) 1272 # ifndef FAR 1273 # define FAR __far 1274 # endif 1275 # define USE_FAR_KEYWORD 1276 # endif /* LDATA != 1 */ 1277 /* Possibly useful for moving data out of default segment. 1278 * Uncomment it if you want. Could also define FARDATA as 1279 * const if your compiler supports it. (SJT) 1280 # define FARDATA FAR 1281 */ 1282 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */ 1283 #endif /* __BORLANDC__ */ 1284 1285 1286 /* Suggest testing for specific compiler first before testing for 1287 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, 1288 * making reliance oncertain keywords suspect. (SJT) 1289 */ 1290 1291 /* MSC Medium model */ 1292 #ifdef FAR 1293 # ifdef M_I86MM 1294 # define USE_FAR_KEYWORD 1295 # define FARDATA FAR 1296 # include <dos.h> 1297 # endif 1298 #endif 1299 1300 /* SJT: default case */ 1301 #ifndef FAR 1302 # define FAR 1303 #endif 1304 1305 /* At this point FAR is always defined */ 1306 #ifndef FARDATA 1307 # define FARDATA 1308 #endif 1309 1310 /* Typedef for floating-point numbers that are converted 1311 to fixed-point with a multiple of 100,000, e.g., int_gamma */ 1312 typedef png_int_32 png_fixed_point; 1313 1314 /* Add typedefs for pointers */ 1315 typedef void FAR * png_voidp; 1316 typedef png_byte FAR * png_bytep; 1317 typedef png_uint_32 FAR * png_uint_32p; 1318 typedef png_int_32 FAR * png_int_32p; 1319 typedef png_uint_16 FAR * png_uint_16p; 1320 typedef png_int_16 FAR * png_int_16p; 1321 typedef PNG_CONST char FAR * png_const_charp; 1322 typedef char FAR * png_charp; 1323 typedef png_fixed_point FAR * png_fixed_point_p; 1324 1325 #ifndef PNG_NO_STDIO 1326 #ifdef _WIN32_WCE 1327 typedef HANDLE png_FILE_p; 1328 #else 1329 typedef FILE * png_FILE_p; 1330 #endif 1331 #endif 1332 1333 #ifdef PNG_FLOATING_POINT_SUPPORTED 1334 typedef double FAR * png_doublep; 1335 #endif 1336 1337 /* Pointers to pointers; i.e. arrays */ 1338 typedef png_byte FAR * FAR * png_bytepp; 1339 typedef png_uint_32 FAR * FAR * png_uint_32pp; 1340 typedef png_int_32 FAR * FAR * png_int_32pp; 1341 typedef png_uint_16 FAR * FAR * png_uint_16pp; 1342 typedef png_int_16 FAR * FAR * png_int_16pp; 1343 typedef PNG_CONST char FAR * FAR * png_const_charpp; 1344 typedef char FAR * FAR * png_charpp; 1345 typedef png_fixed_point FAR * FAR * png_fixed_point_pp; 1346 #ifdef PNG_FLOATING_POINT_SUPPORTED 1347 typedef double FAR * FAR * png_doublepp; 1348 #endif 1349 1350 /* Pointers to pointers to pointers; i.e., pointer to array */ 1351 typedef char FAR * FAR * FAR * png_charppp; 1352 1353 #if defined(PNG_1_0_X) || defined(PNG_1_2_X) 1354 /* SPC - Is this stuff deprecated? */ 1355 /* It'll be removed as of libpng-1.4.0 - GR-P */ 1356 /* libpng typedefs for types in zlib. If zlib changes 1357 * or another compression library is used, then change these. 1358 * Eliminates need to change all the source files. 1359 */ 1360 typedef charf * png_zcharp; 1361 typedef charf * FAR * png_zcharpp; 1362 typedef z_stream FAR * png_zstreamp; 1363 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */ 1364 1365 /* 1366 * Define PNG_BUILD_DLL if the module being built is a Windows 1367 * LIBPNG DLL. 1368 * 1369 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. 1370 * It is equivalent to Microsoft predefined macro _DLL that is 1371 * automatically defined when you compile using the share 1372 * version of the CRT (C Run-Time library) 1373 * 1374 * The cygwin mods make this behavior a little different: 1375 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin 1376 * Define PNG_STATIC if you are building a static library for use with cygwin, 1377 * -or- if you are building an application that you want to link to the 1378 * static library. 1379 * PNG_USE_DLL is defined by default (no user action needed) unless one of 1380 * the other flags is defined. 1381 */ 1382 1383 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) 1384 # define PNG_DLL 1385 #endif 1386 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. 1387 * When building a static lib, default to no GLOBAL ARRAYS, but allow 1388 * command-line override 1389 */ 1390 #ifdef __CYGWIN__ 1391 # ifndef PNG_STATIC 1392 # ifdef PNG_USE_GLOBAL_ARRAYS 1393 # undef PNG_USE_GLOBAL_ARRAYS 1394 # endif 1395 # ifndef PNG_USE_LOCAL_ARRAYS 1396 # define PNG_USE_LOCAL_ARRAYS 1397 # endif 1398 # else 1399 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) 1400 # ifdef PNG_USE_GLOBAL_ARRAYS 1401 # undef PNG_USE_GLOBAL_ARRAYS 1402 # endif 1403 # endif 1404 # endif 1405 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1406 # define PNG_USE_LOCAL_ARRAYS 1407 # endif 1408 #endif 1409 1410 /* Do not use global arrays (helps with building DLL's) 1411 * They are no longer used in libpng itself, since version 1.0.5c, 1412 * but might be required for some pre-1.0.5c applications. 1413 */ 1414 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1415 # if defined(PNG_NO_GLOBAL_ARRAYS) || \ 1416 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER) 1417 # define PNG_USE_LOCAL_ARRAYS 1418 # else 1419 # define PNG_USE_GLOBAL_ARRAYS 1420 # endif 1421 #endif 1422 1423 #ifdef __CYGWIN__ 1424 # undef PNGAPI 1425 # define PNGAPI __cdecl 1426 # undef PNG_IMPEXP 1427 # define PNG_IMPEXP 1428 #endif 1429 1430 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", 1431 * you may get warnings regarding the linkage of png_zalloc and png_zfree. 1432 * Don't ignore those warnings; you must also reset the default calling 1433 * convention in your compiler to match your PNGAPI, and you must build 1434 * zlib and your applications the same way you build libpng. 1435 */ 1436 1437 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF) 1438 # ifndef PNG_NO_MODULEDEF 1439 # define PNG_NO_MODULEDEF 1440 # endif 1441 #endif 1442 1443 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) 1444 # define PNG_IMPEXP 1445 #endif 1446 1447 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ 1448 (( defined(_Windows) || defined(_WINDOWS) || \ 1449 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) 1450 1451 # ifndef PNGAPI 1452 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) 1453 # define PNGAPI __cdecl 1454 # else 1455 # define PNGAPI _cdecl 1456 # endif 1457 # endif 1458 1459 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ 1460 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) 1461 # define PNG_IMPEXP 1462 # endif 1463 1464 # ifndef PNG_IMPEXP 1465 1466 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol 1467 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol 1468 1469 /* Borland/Microsoft */ 1470 # if defined(_MSC_VER) || defined(__BORLANDC__) 1471 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) 1472 # define PNG_EXPORT PNG_EXPORT_TYPE1 1473 # else 1474 # define PNG_EXPORT PNG_EXPORT_TYPE2 1475 # ifdef PNG_BUILD_DLL 1476 # define PNG_IMPEXP __export 1477 # else 1478 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in 1479 VC++ */ 1480 # endif /* Exists in Borland C++ for 1481 C++ classes (== huge) */ 1482 # endif 1483 # endif 1484 1485 # ifndef PNG_IMPEXP 1486 # ifdef PNG_BUILD_DLL 1487 # define PNG_IMPEXP __declspec(dllexport) 1488 # else 1489 # define PNG_IMPEXP __declspec(dllimport) 1490 # endif 1491 # endif 1492 # endif /* PNG_IMPEXP */ 1493 #else /* !(DLL || non-cygwin WINDOWS) */ 1494 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 1495 # ifndef PNGAPI 1496 # define PNGAPI _System 1497 # endif 1498 # else 1499 # if 0 /* ... other platforms, with other meanings */ 1500 # endif 1501 # endif 1502 #endif 1503 1504 #ifndef PNGAPI 1505 # define PNGAPI 1506 #endif 1507 #ifndef PNG_IMPEXP 1508 # define PNG_IMPEXP 1509 #endif 1510 1511 #ifdef PNG_BUILDSYMS 1512 # ifndef PNG_EXPORT 1513 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END 1514 # endif 1515 # ifdef PNG_USE_GLOBAL_ARRAYS 1516 # ifndef PNG_EXPORT_VAR 1517 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT 1518 # endif 1519 # endif 1520 #endif 1521 1522 #ifndef PNG_EXPORT 1523 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol 1524 #endif 1525 1526 #ifdef PNG_USE_GLOBAL_ARRAYS 1527 # ifndef PNG_EXPORT_VAR 1528 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type 1529 # endif 1530 #endif 1531 1532 #ifdef PNG_PEDANTIC_WARNINGS 1533 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED 1534 # define PNG_PEDANTIC_WARNINGS_SUPPORTED 1535 # endif 1536 #endif 1537 1538 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED 1539 /* Support for compiler specific function attributes. These are used 1540 * so that where compiler support is available incorrect use of API 1541 * functions in png.h will generate compiler warnings. Added at libpng 1542 * version 1.2.41. 1543 */ 1544 # ifdef __GNUC__ 1545 # ifndef PNG_USE_RESULT 1546 # define PNG_USE_RESULT __attribute__((__warn_unused_result__)) 1547 # endif 1548 # ifndef PNG_NORETURN 1549 # define PNG_NORETURN __attribute__((__noreturn__)) 1550 # endif 1551 # ifndef PNG_ALLOCATED 1552 # define PNG_ALLOCATED __attribute__((__malloc__)) 1553 # endif 1554 1555 /* This specifically protects structure members that should only be 1556 * accessed from within the library, therefore should be empty during 1557 * a library build. 1558 */ 1559 # ifndef PNG_DEPRECATED 1560 # define PNG_DEPRECATED __attribute__((__deprecated__)) 1561 # endif 1562 # ifndef PNG_DEPSTRUCT 1563 # define PNG_DEPSTRUCT __attribute__((__deprecated__)) 1564 # endif 1565 # ifndef PNG_PRIVATE 1566 # if 0 /* Doesn't work so we use deprecated instead*/ 1567 # define PNG_PRIVATE \ 1568 __attribute__((warning("This function is not exported by libpng."))) 1569 # else 1570 # define PNG_PRIVATE \ 1571 __attribute__((__deprecated__)) 1572 # endif 1573 # endif /* PNG_PRIVATE */ 1574 # endif /* __GNUC__ */ 1575 #endif /* PNG_PEDANTIC_WARNINGS */ 1576 1577 #ifndef PNG_DEPRECATED 1578 # define PNG_DEPRECATED /* Use of this function is deprecated */ 1579 #endif 1580 #ifndef PNG_USE_RESULT 1581 # define PNG_USE_RESULT /* The result of this function must be checked */ 1582 #endif 1583 #ifndef PNG_NORETURN 1584 # define PNG_NORETURN /* This function does not return */ 1585 #endif 1586 #ifndef PNG_ALLOCATED 1587 # define PNG_ALLOCATED /* The result of the function is new memory */ 1588 #endif 1589 #ifndef PNG_DEPSTRUCT 1590 # define PNG_DEPSTRUCT /* Access to this struct member is deprecated */ 1591 #endif 1592 #ifndef PNG_PRIVATE 1593 # define PNG_PRIVATE /* This is a private libpng function */ 1594 #endif 1595 1596 /* User may want to use these so they are not in PNG_INTERNAL. Any library 1597 * functions that are passed far data must be model independent. 1598 */ 1599 1600 #ifndef PNG_ABORT 1601 # define PNG_ABORT() abort() 1602 #endif 1603 1604 #ifdef PNG_SETJMP_SUPPORTED 1605 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) 1606 #else 1607 # define png_jmpbuf(png_ptr) \ 1608 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) 1609 #endif 1610 1611 #ifdef USE_FAR_KEYWORD /* memory model independent fns */ 1612 /* Use this to make far-to-near assignments */ 1613 # define CHECK 1 1614 # define NOCHECK 0 1615 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) 1616 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) 1617 # define png_snprintf _fsnprintf /* Added to v 1.2.19 */ 1618 # define png_strlen _fstrlen 1619 # define png_memcmp _fmemcmp /* SJT: added */ 1620 # define png_memcpy _fmemcpy 1621 # define png_memset _fmemset 1622 #else /* Use the usual functions */ 1623 # define CVT_PTR(ptr) (ptr) 1624 # define CVT_PTR_NOCHECK(ptr) (ptr) 1625 # ifndef PNG_NO_SNPRINTF 1626 # ifdef _MSC_VER 1627 # define png_snprintf _snprintf /* Added to v 1.2.19 */ 1628 # define png_snprintf2 _snprintf 1629 # define png_snprintf6 _snprintf 1630 # else 1631 # define png_snprintf snprintf /* Added to v 1.2.19 */ 1632 # define png_snprintf2 snprintf 1633 # define png_snprintf6 snprintf 1634 # endif 1635 # else 1636 /* You don't have or don't want to use snprintf(). Caution: Using 1637 * sprintf instead of snprintf exposes your application to accidental 1638 * or malevolent buffer overflows. If you don't have snprintf() 1639 * as a general rule you should provide one (you can get one from 1640 * Portable OpenSSH). 1641 */ 1642 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1) 1643 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2) 1644 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \ 1645 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6) 1646 # endif 1647 # define png_strlen strlen 1648 # define png_memcmp memcmp /* SJT: added */ 1649 # define png_memcpy memcpy 1650 # define png_memset memset 1651 #endif 1652 /* End of memory model independent support */ 1653 1654 /* Just a little check that someone hasn't tried to define something 1655 * contradictory. 1656 */ 1657 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) 1658 # undef PNG_ZBUF_SIZE 1659 # define PNG_ZBUF_SIZE 65536L 1660 #endif 1661 1662 /* Added at libpng-1.2.8 */ 1663 #endif /* PNG_VERSION_INFO_ONLY */ 1664 1665 #endif /* PNGCONF_H */ 1666
