pngconf.h (50346B)
1 2 /* pngconf.h - machine configurable file for libpng 3 * 4 * libpng version 1.2.51 - February 6, 2014 5 * Copyright (c) 1998-2013 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 /* Added at libpng-1.2.51 (ported from 1.4.6) */ 90 #ifndef PNG_UNUSED 91 /* Unused formal parameter warnings are silenced using the following macro 92 * which is expected to have no bad effects on performance (optimizing 93 * compilers will probably remove it entirely). Note that if you replace 94 * it with something other than whitespace, you must include the terminating 95 * semicolon. 96 */ 97 # define PNG_UNUSED(param) (void)param; 98 #endif 99 /* End of material added to libpng-1.4.6 */ 100 101 /* This is the size of the compression buffer, and thus the size of 102 * an IDAT chunk. Make this whatever size you feel is best for your 103 * machine. One of these will be allocated per png_struct. When this 104 * is full, it writes the data to the disk, and does some other 105 * calculations. Making this an extremely small size will slow 106 * the library down, but you may want to experiment to determine 107 * where it becomes significant, if you are concerned with memory 108 * usage. Note that zlib allocates at least 32Kb also. For readers, 109 * this describes the size of the buffer available to read the data in. 110 * Unless this gets smaller than the size of a row (compressed), 111 * it should not make much difference how big this is. 112 */ 113 114 #ifndef PNG_ZBUF_SIZE 115 # define PNG_ZBUF_SIZE 8192 116 #endif 117 118 /* Enable if you want a write-only libpng */ 119 120 #ifndef PNG_NO_READ_SUPPORTED 121 # define PNG_READ_SUPPORTED 122 #endif 123 124 /* Enable if you want a read-only libpng */ 125 126 #ifndef PNG_NO_WRITE_SUPPORTED 127 # define PNG_WRITE_SUPPORTED 128 #endif 129 130 /* Enabled in 1.2.41. */ 131 #ifdef PNG_ALLOW_BENIGN_ERRORS 132 # define png_benign_error png_warning 133 # define png_chunk_benign_error png_chunk_warning 134 #else 135 # ifndef PNG_BENIGN_ERRORS_SUPPORTED 136 # define png_benign_error png_error 137 # define png_chunk_benign_error png_chunk_error 138 # endif 139 #endif 140 141 /* Added in libpng-1.2.41 */ 142 #if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED) 143 # define PNG_WARNINGS_SUPPORTED 144 #endif 145 146 #if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED) 147 # define PNG_ERROR_TEXT_SUPPORTED 148 #endif 149 150 #if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED) 151 # define PNG_CHECK_cHRM_SUPPORTED 152 #endif 153 154 /* Enabled by default in 1.2.0. You can disable this if you don't need to 155 * support PNGs that are embedded in MNG datastreams 156 */ 157 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES) 158 # ifndef PNG_MNG_FEATURES_SUPPORTED 159 # define PNG_MNG_FEATURES_SUPPORTED 160 # endif 161 #endif 162 163 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED 164 # ifndef PNG_FLOATING_POINT_SUPPORTED 165 # define PNG_FLOATING_POINT_SUPPORTED 166 # endif 167 #endif 168 169 /* If you are running on a machine where you cannot allocate more 170 * than 64K of memory at once, uncomment this. While libpng will not 171 * normally need that much memory in a chunk (unless you load up a very 172 * large file), zlib needs to know how big of a chunk it can use, and 173 * libpng thus makes sure to check any memory allocation to verify it 174 * will fit into memory. 175 #define PNG_MAX_MALLOC_64K 176 */ 177 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) 178 # define PNG_MAX_MALLOC_64K 179 #endif 180 181 /* Special munging to support doing things the 'cygwin' way: 182 * 'Normal' png-on-win32 defines/defaults: 183 * PNG_BUILD_DLL -- building dll 184 * PNG_USE_DLL -- building an application, linking to dll 185 * (no define) -- building static library, or building an 186 * application and linking to the static lib 187 * 'Cygwin' defines/defaults: 188 * PNG_BUILD_DLL -- (ignored) building the dll 189 * (no define) -- (ignored) building an application, linking to the dll 190 * PNG_STATIC -- (ignored) building the static lib, or building an 191 * application that links to the static lib. 192 * ALL_STATIC -- (ignored) building various static libs, or building an 193 * application that links to the static libs. 194 * Thus, 195 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and 196 * this bit of #ifdefs will define the 'correct' config variables based on 197 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but 198 * unnecessary. 199 * 200 * Also, the precedence order is: 201 * ALL_STATIC (since we can't #undef something outside our namespace) 202 * PNG_BUILD_DLL 203 * PNG_STATIC 204 * (nothing) == PNG_USE_DLL 205 * 206 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent 207 * of auto-import in binutils, we no longer need to worry about 208 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, 209 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes 210 * to __declspec() stuff. However, we DO need to worry about 211 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults 212 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. 213 */ 214 #ifdef __CYGWIN__ 215 # ifdef ALL_STATIC 216 # ifdef PNG_BUILD_DLL 217 # undef PNG_BUILD_DLL 218 # endif 219 # ifdef PNG_USE_DLL 220 # undef PNG_USE_DLL 221 # endif 222 # ifdef PNG_DLL 223 # undef PNG_DLL 224 # endif 225 # ifndef PNG_STATIC 226 # define PNG_STATIC 227 # endif 228 # else 229 # ifdef PNG_BUILD_DLL 230 # ifdef PNG_STATIC 231 # undef PNG_STATIC 232 # endif 233 # ifdef PNG_USE_DLL 234 # undef PNG_USE_DLL 235 # endif 236 # ifndef PNG_DLL 237 # define PNG_DLL 238 # endif 239 # else 240 # ifdef PNG_STATIC 241 # ifdef PNG_USE_DLL 242 # undef PNG_USE_DLL 243 # endif 244 # ifdef PNG_DLL 245 # undef PNG_DLL 246 # endif 247 # else 248 # ifndef PNG_USE_DLL 249 # define PNG_USE_DLL 250 # endif 251 # ifndef PNG_DLL 252 # define PNG_DLL 253 # endif 254 # endif 255 # endif 256 # endif 257 #endif 258 259 /* This protects us against compilers that run on a windowing system 260 * and thus don't have or would rather us not use the stdio types: 261 * stdin, stdout, and stderr. The only one currently used is stderr 262 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will 263 * prevent these from being compiled and used. #defining PNG_NO_STDIO 264 * will also prevent these, plus will prevent the entire set of stdio 265 * macros and functions (FILE *, printf, etc.) from being compiled and used, 266 * unless (PNG_DEBUG > 0) has been #defined. 267 * 268 * #define PNG_NO_CONSOLE_IO 269 * #define PNG_NO_STDIO 270 */ 271 272 #if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED) 273 # define PNG_STDIO_SUPPORTED 274 #endif 275 276 #ifdef _WIN32_WCE 277 # include <windows.h> 278 /* Console I/O functions are not supported on WindowsCE */ 279 # define PNG_NO_CONSOLE_IO 280 /* abort() may not be supported on some/all Windows CE platforms */ 281 # define PNG_ABORT() exit(-1) 282 # ifdef PNG_DEBUG 283 # undef PNG_DEBUG 284 # endif 285 #endif 286 287 #ifdef PNG_BUILD_DLL 288 # ifndef PNG_CONSOLE_IO_SUPPORTED 289 # ifndef PNG_NO_CONSOLE_IO 290 # define PNG_NO_CONSOLE_IO 291 # endif 292 # endif 293 #endif 294 295 # ifdef PNG_NO_STDIO 296 # ifndef PNG_NO_CONSOLE_IO 297 # define PNG_NO_CONSOLE_IO 298 # endif 299 # ifdef PNG_DEBUG 300 # if (PNG_DEBUG > 0) 301 # include <stdio.h> 302 # endif 303 # endif 304 # else 305 # ifndef _WIN32_WCE 306 /* "stdio.h" functions are not supported on WindowsCE */ 307 # include <stdio.h> 308 # endif 309 # endif 310 311 #if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED) 312 # define PNG_CONSOLE_IO_SUPPORTED 313 #endif 314 315 /* This macro protects us against machines that don't have function 316 * prototypes (ie K&R style headers). If your compiler does not handle 317 * function prototypes, define this macro and use the included ansi2knr. 318 * I've always been able to use _NO_PROTO as the indicator, but you may 319 * need to drag the empty declaration out in front of here, or change the 320 * ifdef to suit your own needs. 321 */ 322 #ifndef PNGARG 323 324 #ifdef OF /* zlib prototype munger */ 325 # define PNGARG(arglist) OF(arglist) 326 #else 327 328 #ifdef _NO_PROTO 329 # define PNGARG(arglist) () 330 # ifndef PNG_TYPECAST_NULL 331 # define PNG_TYPECAST_NULL 332 # endif 333 #else 334 # define PNGARG(arglist) arglist 335 #endif /* _NO_PROTO */ 336 337 338 #endif /* OF */ 339 340 #endif /* PNGARG */ 341 342 /* Try to determine if we are compiling on a Mac. Note that testing for 343 * just __MWERKS__ is not good enough, because the Codewarrior is now used 344 * on non-Mac platforms. 345 */ 346 #ifndef MACOS 347 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ 348 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) 349 # define MACOS 350 # endif 351 #endif 352 353 /* enough people need this for various reasons to include it here */ 354 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) 355 # include <sys/types.h> 356 #endif 357 358 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) 359 # define PNG_SETJMP_SUPPORTED 360 #endif 361 362 #ifdef PNG_SETJMP_SUPPORTED 363 /* This is an attempt to force a single setjmp behaviour on Linux. If 364 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. 365 * 366 * You can bypass this test if you know that your application uses exactly 367 * the same setjmp.h that was included when libpng was built. Only define 368 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the 369 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK 370 * while building a separate libpng library for general use. 371 */ 372 373 # ifndef PNG_SKIP_SETJMP_CHECK 374 # ifdef __linux__ 375 # ifdef _BSD_SOURCE 376 # define PNG_SAVE_BSD_SOURCE 377 # undef _BSD_SOURCE 378 # endif 379 # ifdef _SETJMP_H 380 /* If you encounter a compiler error here, see the explanation 381 * near the end of INSTALL. 382 */ 383 __pngconf.h__ in libpng already includes setjmp.h; 384 __dont__ include it again.; 385 # endif 386 # endif /* __linux__ */ 387 # endif /* PNG_SKIP_SETJMP_CHECK */ 388 389 /* include setjmp.h for error handling */ 390 # include <setjmp.h> 391 392 # ifdef __linux__ 393 # ifdef PNG_SAVE_BSD_SOURCE 394 # ifndef _BSD_SOURCE 395 # define _BSD_SOURCE 396 # endif 397 # undef PNG_SAVE_BSD_SOURCE 398 # endif 399 # endif /* __linux__ */ 400 #endif /* PNG_SETJMP_SUPPORTED */ 401 402 #ifdef BSD 403 # include <strings.h> 404 #else 405 # include <string.h> 406 #endif 407 408 /* Other defines for things like memory and the like can go here. */ 409 #ifdef PNG_INTERNAL 410 411 #include <stdlib.h> 412 413 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which 414 * aren't usually used outside the library (as far as I know), so it is 415 * debatable if they should be exported at all. In the future, when it is 416 * possible to have run-time registry of chunk-handling functions, some of 417 * these will be made available again. 418 #define PNG_EXTERN extern 419 */ 420 #define PNG_EXTERN 421 422 /* Other defines specific to compilers can go here. Try to keep 423 * them inside an appropriate ifdef/endif pair for portability. 424 */ 425 426 #ifdef PNG_FLOATING_POINT_SUPPORTED 427 # ifdef MACOS 428 /* We need to check that <math.h> hasn't already been included earlier 429 * as it seems it doesn't agree with <fp.h>, yet we should really use 430 * <fp.h> if possible. 431 */ 432 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) 433 # include <fp.h> 434 # endif 435 # else 436 # include <math.h> 437 # endif 438 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) 439 /* Amiga SAS/C: We must include builtin FPU functions when compiling using 440 * MATH=68881 441 */ 442 # include <m68881.h> 443 # endif 444 #endif 445 446 /* Codewarrior on NT has linking problems without this. */ 447 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) 448 # define PNG_ALWAYS_EXTERN 449 #endif 450 451 /* This provides the non-ANSI (far) memory allocation routines. */ 452 #if defined(__TURBOC__) && defined(__MSDOS__) 453 # include <mem.h> 454 # include <alloc.h> 455 #endif 456 457 /* I have no idea why is this necessary... */ 458 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ 459 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) 460 # include <malloc.h> 461 #endif 462 463 /* This controls how fine the dithering gets. As this allocates 464 * a largish chunk of memory (32K), those who are not as concerned 465 * with dithering quality can decrease some or all of these. 466 */ 467 #ifndef PNG_DITHER_RED_BITS 468 # define PNG_DITHER_RED_BITS 5 469 #endif 470 #ifndef PNG_DITHER_GREEN_BITS 471 # define PNG_DITHER_GREEN_BITS 5 472 #endif 473 #ifndef PNG_DITHER_BLUE_BITS 474 # define PNG_DITHER_BLUE_BITS 5 475 #endif 476 477 /* This controls how fine the gamma correction becomes when you 478 * are only interested in 8 bits anyway. Increasing this value 479 * results in more memory being used, and more pow() functions 480 * being called to fill in the gamma tables. Don't set this value 481 * less then 8, and even that may not work (I haven't tested it). 482 */ 483 484 #ifndef PNG_MAX_GAMMA_8 485 # define PNG_MAX_GAMMA_8 11 486 #endif 487 488 /* This controls how much a difference in gamma we can tolerate before 489 * we actually start doing gamma conversion. 490 */ 491 #ifndef PNG_GAMMA_THRESHOLD 492 # define PNG_GAMMA_THRESHOLD 0.05 493 #endif 494 495 #endif /* PNG_INTERNAL */ 496 497 /* The following uses const char * instead of char * for error 498 * and warning message functions, so some compilers won't complain. 499 * If you do not want to use const, define PNG_NO_CONST here. 500 */ 501 502 #ifndef PNG_NO_CONST 503 # define PNG_CONST const 504 #else 505 # define PNG_CONST 506 #endif 507 508 /* The following defines give you the ability to remove code from the 509 * library that you will not be using. I wish I could figure out how to 510 * automate this, but I can't do that without making it seriously hard 511 * on the users. So if you are not using an ability, change the #define 512 * to and #undef, and that part of the library will not be compiled. If 513 * your linker can't find a function, you may want to make sure the 514 * ability is defined here. Some of these depend upon some others being 515 * defined. I haven't figured out all the interactions here, so you may 516 * have to experiment awhile to get everything to compile. If you are 517 * creating or using a shared library, you probably shouldn't touch this, 518 * as it will affect the size of the structures, and this will cause bad 519 * things to happen if the library and/or application ever change. 520 */ 521 522 /* Any features you will not be using can be undef'ed here */ 523 524 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user 525 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS 526 * on the compile line, then pick and choose which ones to define without 527 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED 528 * if you only want to have a png-compliant reader/writer but don't need 529 * any of the extra transformations. This saves about 80 kbytes in a 530 * typical installation of the library. (PNG_NO_* form added in version 531 * 1.0.1c, for consistency) 532 */ 533 534 /* The size of the png_text structure changed in libpng-1.0.6 when 535 * iTXt support was added. iTXt support was turned off by default through 536 * libpng-1.2.x, to support old apps that malloc the png_text structure 537 * instead of calling png_set_text() and letting libpng malloc it. It 538 * will be turned on by default in libpng-1.4.0. 539 */ 540 541 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 542 # ifndef PNG_NO_iTXt_SUPPORTED 543 # define PNG_NO_iTXt_SUPPORTED 544 # endif 545 # ifndef PNG_NO_READ_iTXt 546 # define PNG_NO_READ_iTXt 547 # endif 548 # ifndef PNG_NO_WRITE_iTXt 549 # define PNG_NO_WRITE_iTXt 550 # endif 551 #endif 552 553 #if !defined(PNG_NO_iTXt_SUPPORTED) 554 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) 555 # define PNG_READ_iTXt 556 # endif 557 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) 558 # define PNG_WRITE_iTXt 559 # endif 560 #endif 561 562 /* The following support, added after version 1.0.0, can be turned off here en 563 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility 564 * with old applications that require the length of png_struct and png_info 565 * to remain unchanged. 566 */ 567 568 #ifdef PNG_LEGACY_SUPPORTED 569 # define PNG_NO_FREE_ME 570 # define PNG_NO_READ_UNKNOWN_CHUNKS 571 # define PNG_NO_WRITE_UNKNOWN_CHUNKS 572 # define PNG_NO_HANDLE_AS_UNKNOWN 573 # define PNG_NO_READ_USER_CHUNKS 574 # define PNG_NO_READ_iCCP 575 # define PNG_NO_WRITE_iCCP 576 # define PNG_NO_READ_iTXt 577 # define PNG_NO_WRITE_iTXt 578 # define PNG_NO_READ_sCAL 579 # define PNG_NO_WRITE_sCAL 580 # define PNG_NO_READ_sPLT 581 # define PNG_NO_WRITE_sPLT 582 # define PNG_NO_INFO_IMAGE 583 # define PNG_NO_READ_RGB_TO_GRAY 584 # define PNG_NO_READ_USER_TRANSFORM 585 # define PNG_NO_WRITE_USER_TRANSFORM 586 # define PNG_NO_USER_MEM 587 # define PNG_NO_READ_EMPTY_PLTE 588 # define PNG_NO_MNG_FEATURES 589 # define PNG_NO_FIXED_POINT_SUPPORTED 590 #endif 591 592 /* Ignore attempt to turn off both floating and fixed point support */ 593 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ 594 !defined(PNG_NO_FIXED_POINT_SUPPORTED) 595 # define PNG_FIXED_POINT_SUPPORTED 596 #endif 597 598 #ifndef PNG_NO_FREE_ME 599 # define PNG_FREE_ME_SUPPORTED 600 #endif 601 602 #ifdef PNG_READ_SUPPORTED 603 604 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ 605 !defined(PNG_NO_READ_TRANSFORMS) 606 # define PNG_READ_TRANSFORMS_SUPPORTED 607 #endif 608 609 #ifdef PNG_READ_TRANSFORMS_SUPPORTED 610 # ifndef PNG_NO_READ_EXPAND 611 # define PNG_READ_EXPAND_SUPPORTED 612 # endif 613 # ifndef PNG_NO_READ_SHIFT 614 # define PNG_READ_SHIFT_SUPPORTED 615 # endif 616 # ifndef PNG_NO_READ_PACK 617 # define PNG_READ_PACK_SUPPORTED 618 # endif 619 # ifndef PNG_NO_READ_BGR 620 # define PNG_READ_BGR_SUPPORTED 621 # endif 622 # ifndef PNG_NO_READ_SWAP 623 # define PNG_READ_SWAP_SUPPORTED 624 # endif 625 # ifndef PNG_NO_READ_PACKSWAP 626 # define PNG_READ_PACKSWAP_SUPPORTED 627 # endif 628 # ifndef PNG_NO_READ_INVERT 629 # define PNG_READ_INVERT_SUPPORTED 630 # endif 631 # ifndef PNG_NO_READ_DITHER 632 # define PNG_READ_DITHER_SUPPORTED 633 # endif 634 # ifndef PNG_NO_READ_BACKGROUND 635 # define PNG_READ_BACKGROUND_SUPPORTED 636 # endif 637 # ifndef PNG_NO_READ_16_TO_8 638 # define PNG_READ_16_TO_8_SUPPORTED 639 # endif 640 # ifndef PNG_NO_READ_FILLER 641 # define PNG_READ_FILLER_SUPPORTED 642 # endif 643 # ifndef PNG_NO_READ_GAMMA 644 # define PNG_READ_GAMMA_SUPPORTED 645 # endif 646 # ifndef PNG_NO_READ_GRAY_TO_RGB 647 # define PNG_READ_GRAY_TO_RGB_SUPPORTED 648 # endif 649 # ifndef PNG_NO_READ_SWAP_ALPHA 650 # define PNG_READ_SWAP_ALPHA_SUPPORTED 651 # endif 652 # ifndef PNG_NO_READ_INVERT_ALPHA 653 # define PNG_READ_INVERT_ALPHA_SUPPORTED 654 # endif 655 # ifndef PNG_NO_READ_STRIP_ALPHA 656 # define PNG_READ_STRIP_ALPHA_SUPPORTED 657 # endif 658 # ifndef PNG_NO_READ_USER_TRANSFORM 659 # define PNG_READ_USER_TRANSFORM_SUPPORTED 660 # endif 661 # ifndef PNG_NO_READ_RGB_TO_GRAY 662 # define PNG_READ_RGB_TO_GRAY_SUPPORTED 663 # endif 664 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */ 665 666 /* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */ 667 #if !defined(PNG_NO_PROGRESSIVE_READ) && \ 668 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */ 669 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ 670 #endif /* about interlacing capability! You'll */ 671 /* still have interlacing unless you change the following define: */ 672 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */ 673 674 /* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */ 675 #if !defined(PNG_NO_SEQUENTIAL_READ) && \ 676 !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \ 677 !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED) 678 # define PNG_SEQUENTIAL_READ_SUPPORTED 679 #endif 680 681 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */ 682 683 #ifndef PNG_NO_READ_COMPOSITE_NODIV 684 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ 685 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ 686 # endif 687 #endif 688 689 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 690 /* Deprecated, will be removed from version 2.0.0. 691 Use PNG_MNG_FEATURES_SUPPORTED instead. */ 692 #ifndef PNG_NO_READ_EMPTY_PLTE 693 # define PNG_READ_EMPTY_PLTE_SUPPORTED 694 #endif 695 #endif 696 697 #endif /* PNG_READ_SUPPORTED */ 698 699 #ifdef PNG_WRITE_SUPPORTED 700 701 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ 702 !defined(PNG_NO_WRITE_TRANSFORMS) 703 # define PNG_WRITE_TRANSFORMS_SUPPORTED 704 #endif 705 706 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED 707 # ifndef PNG_NO_WRITE_SHIFT 708 # define PNG_WRITE_SHIFT_SUPPORTED 709 # endif 710 # ifndef PNG_NO_WRITE_PACK 711 # define PNG_WRITE_PACK_SUPPORTED 712 # endif 713 # ifndef PNG_NO_WRITE_BGR 714 # define PNG_WRITE_BGR_SUPPORTED 715 # endif 716 # ifndef PNG_NO_WRITE_SWAP 717 # define PNG_WRITE_SWAP_SUPPORTED 718 # endif 719 # ifndef PNG_NO_WRITE_PACKSWAP 720 # define PNG_WRITE_PACKSWAP_SUPPORTED 721 # endif 722 # ifndef PNG_NO_WRITE_INVERT 723 # define PNG_WRITE_INVERT_SUPPORTED 724 # endif 725 # ifndef PNG_NO_WRITE_FILLER 726 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ 727 # endif 728 # ifndef PNG_NO_WRITE_SWAP_ALPHA 729 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED 730 # endif 731 #ifndef PNG_1_0_X 732 # ifndef PNG_NO_WRITE_INVERT_ALPHA 733 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED 734 # endif 735 #endif 736 # ifndef PNG_NO_WRITE_USER_TRANSFORM 737 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED 738 # endif 739 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ 740 741 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \ 742 !defined(PNG_WRITE_INTERLACING_SUPPORTED) 743 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant 744 encoders, but can cause trouble 745 if left undefined */ 746 #endif 747 748 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ 749 !defined(PNG_WRITE_WEIGHTED_FILTER) && \ 750 defined(PNG_FLOATING_POINT_SUPPORTED) 751 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED 752 #endif 753 754 #ifndef PNG_NO_WRITE_FLUSH 755 # define PNG_WRITE_FLUSH_SUPPORTED 756 #endif 757 758 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 759 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ 760 #ifndef PNG_NO_WRITE_EMPTY_PLTE 761 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED 762 #endif 763 #endif 764 765 #endif /* PNG_WRITE_SUPPORTED */ 766 767 #ifndef PNG_1_0_X 768 # ifndef PNG_NO_ERROR_NUMBERS 769 # define PNG_ERROR_NUMBERS_SUPPORTED 770 # endif 771 #endif /* PNG_1_0_X */ 772 773 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 774 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) 775 # ifndef PNG_NO_USER_TRANSFORM_PTR 776 # define PNG_USER_TRANSFORM_PTR_SUPPORTED 777 # endif 778 #endif 779 780 #ifndef PNG_NO_STDIO 781 # define PNG_TIME_RFC1123_SUPPORTED 782 #endif 783 784 /* This adds extra functions in pngget.c for accessing data from the 785 * info pointer (added in version 0.99) 786 * png_get_image_width() 787 * png_get_image_height() 788 * png_get_bit_depth() 789 * png_get_color_type() 790 * png_get_compression_type() 791 * png_get_filter_type() 792 * png_get_interlace_type() 793 * png_get_pixel_aspect_ratio() 794 * png_get_pixels_per_meter() 795 * png_get_x_offset_pixels() 796 * png_get_y_offset_pixels() 797 * png_get_x_offset_microns() 798 * png_get_y_offset_microns() 799 */ 800 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) 801 # define PNG_EASY_ACCESS_SUPPORTED 802 #endif 803 804 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 805 * and removed from version 1.2.20. The following will be removed 806 * from libpng-1.4.0 807 */ 808 809 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE) 810 # ifndef PNG_OPTIMIZED_CODE_SUPPORTED 811 # define PNG_OPTIMIZED_CODE_SUPPORTED 812 # endif 813 #endif 814 815 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE) 816 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED 817 # define PNG_ASSEMBLER_CODE_SUPPORTED 818 # endif 819 820 # if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4) 821 /* work around 64-bit gcc compiler bugs in gcc-3.x */ 822 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 823 # define PNG_NO_MMX_CODE 824 # endif 825 # endif 826 827 # ifdef __APPLE__ 828 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 829 # define PNG_NO_MMX_CODE 830 # endif 831 # endif 832 833 # if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh)) 834 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 835 # define PNG_NO_MMX_CODE 836 # endif 837 # endif 838 839 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 840 # define PNG_MMX_CODE_SUPPORTED 841 # endif 842 843 #endif 844 /* end of obsolete code to be removed from libpng-1.4.0 */ 845 846 /* Added at libpng-1.2.0 */ 847 #ifndef PNG_1_0_X 848 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) 849 # define PNG_USER_MEM_SUPPORTED 850 #endif 851 #endif /* PNG_1_0_X */ 852 853 /* Added at libpng-1.2.6 */ 854 #ifndef PNG_1_0_X 855 # ifndef PNG_SET_USER_LIMITS_SUPPORTED 856 # ifndef PNG_NO_SET_USER_LIMITS 857 # define PNG_SET_USER_LIMITS_SUPPORTED 858 # endif 859 # endif 860 #endif /* PNG_1_0_X */ 861 862 /* Added at libpng-1.0.53 and 1.2.43 */ 863 #ifndef PNG_USER_LIMITS_SUPPORTED 864 # ifndef PNG_NO_USER_LIMITS 865 # define PNG_USER_LIMITS_SUPPORTED 866 # endif 867 #endif 868 869 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter 870 * how large, set these limits to 0x7fffffffL 871 */ 872 #ifndef PNG_USER_WIDTH_MAX 873 # define PNG_USER_WIDTH_MAX 1000000L 874 #endif 875 #ifndef PNG_USER_HEIGHT_MAX 876 # define PNG_USER_HEIGHT_MAX 1000000L 877 #endif 878 879 /* Added at libpng-1.2.43. To accept all valid PNGs no matter 880 * how large, set these two limits to 0. 881 */ 882 #ifndef PNG_USER_CHUNK_CACHE_MAX 883 # define PNG_USER_CHUNK_CACHE_MAX 32765 884 #endif 885 886 /* Added at libpng-1.2.43 */ 887 #ifndef PNG_USER_CHUNK_MALLOC_MAX 888 # define PNG_USER_CHUNK_MALLOC_MAX 0 889 #endif 890 891 #ifndef PNG_LITERAL_SHARP 892 # define PNG_LITERAL_SHARP 0x23 893 #endif 894 #ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET 895 # define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b 896 #endif 897 #ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET 898 # define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d 899 #endif 900 901 /* Added at libpng-1.2.34 */ 902 #ifndef PNG_STRING_NEWLINE 903 #define PNG_STRING_NEWLINE "\n" 904 #endif 905 906 /* These are currently experimental features, define them if you want */ 907 908 /* very little testing */ 909 /* 910 #ifdef PNG_READ_SUPPORTED 911 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 912 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 913 # endif 914 #endif 915 */ 916 917 /* This is only for PowerPC big-endian and 680x0 systems */ 918 /* some testing */ 919 /* 920 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED 921 # define PNG_READ_BIG_ENDIAN_SUPPORTED 922 #endif 923 */ 924 925 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */ 926 /* 927 #define PNG_NO_POINTER_INDEXING 928 */ 929 930 #if !defined(PNG_NO_POINTER_INDEXING) && \ 931 !defined(PNG_POINTER_INDEXING_SUPPORTED) 932 # define PNG_POINTER_INDEXING_SUPPORTED 933 #endif 934 935 /* These functions are turned off by default, as they will be phased out. */ 936 /* 937 #define PNG_USELESS_TESTS_SUPPORTED 938 #define PNG_CORRECT_PALETTE_SUPPORTED 939 */ 940 941 /* Any chunks you are not interested in, you can undef here. The 942 * ones that allocate memory may be expecially important (hIST, 943 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info 944 * a bit smaller. 945 */ 946 947 #if defined(PNG_READ_SUPPORTED) && \ 948 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 949 !defined(PNG_NO_READ_ANCILLARY_CHUNKS) 950 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 951 #endif 952 953 #if defined(PNG_WRITE_SUPPORTED) && \ 954 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 955 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) 956 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 957 #endif 958 959 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 960 961 #ifdef PNG_NO_READ_TEXT 962 # define PNG_NO_READ_iTXt 963 # define PNG_NO_READ_tEXt 964 # define PNG_NO_READ_zTXt 965 #endif 966 #ifndef PNG_NO_READ_bKGD 967 # define PNG_READ_bKGD_SUPPORTED 968 # define PNG_bKGD_SUPPORTED 969 #endif 970 #ifndef PNG_NO_READ_cHRM 971 # define PNG_READ_cHRM_SUPPORTED 972 # define PNG_cHRM_SUPPORTED 973 #endif 974 #ifndef PNG_NO_READ_gAMA 975 # define PNG_READ_gAMA_SUPPORTED 976 # define PNG_gAMA_SUPPORTED 977 #endif 978 #ifndef PNG_NO_READ_hIST 979 # define PNG_READ_hIST_SUPPORTED 980 # define PNG_hIST_SUPPORTED 981 #endif 982 #ifndef PNG_NO_READ_iCCP 983 # define PNG_READ_iCCP_SUPPORTED 984 # define PNG_iCCP_SUPPORTED 985 #endif 986 #ifndef PNG_NO_READ_iTXt 987 # ifndef PNG_READ_iTXt_SUPPORTED 988 # define PNG_READ_iTXt_SUPPORTED 989 # endif 990 # ifndef PNG_iTXt_SUPPORTED 991 # define PNG_iTXt_SUPPORTED 992 # endif 993 #endif 994 #ifndef PNG_NO_READ_oFFs 995 # define PNG_READ_oFFs_SUPPORTED 996 # define PNG_oFFs_SUPPORTED 997 #endif 998 #ifndef PNG_NO_READ_pCAL 999 # define PNG_READ_pCAL_SUPPORTED 1000 # define PNG_pCAL_SUPPORTED 1001 #endif 1002 #ifndef PNG_NO_READ_sCAL 1003 # define PNG_READ_sCAL_SUPPORTED 1004 # define PNG_sCAL_SUPPORTED 1005 #endif 1006 #ifndef PNG_NO_READ_pHYs 1007 # define PNG_READ_pHYs_SUPPORTED 1008 # define PNG_pHYs_SUPPORTED 1009 #endif 1010 #ifndef PNG_NO_READ_sBIT 1011 # define PNG_READ_sBIT_SUPPORTED 1012 # define PNG_sBIT_SUPPORTED 1013 #endif 1014 #ifndef PNG_NO_READ_sPLT 1015 # define PNG_READ_sPLT_SUPPORTED 1016 # define PNG_sPLT_SUPPORTED 1017 #endif 1018 #ifndef PNG_NO_READ_sRGB 1019 # define PNG_READ_sRGB_SUPPORTED 1020 # define PNG_sRGB_SUPPORTED 1021 #endif 1022 #ifndef PNG_NO_READ_tEXt 1023 # define PNG_READ_tEXt_SUPPORTED 1024 # define PNG_tEXt_SUPPORTED 1025 #endif 1026 #ifndef PNG_NO_READ_tIME 1027 # define PNG_READ_tIME_SUPPORTED 1028 # define PNG_tIME_SUPPORTED 1029 #endif 1030 #ifndef PNG_NO_READ_tRNS 1031 # define PNG_READ_tRNS_SUPPORTED 1032 # define PNG_tRNS_SUPPORTED 1033 #endif 1034 #ifndef PNG_NO_READ_zTXt 1035 # define PNG_READ_zTXt_SUPPORTED 1036 # define PNG_zTXt_SUPPORTED 1037 #endif 1038 #ifndef PNG_NO_READ_OPT_PLTE 1039 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ 1040 #endif /* optional PLTE chunk in RGB and RGBA images */ 1041 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ 1042 defined(PNG_READ_zTXt_SUPPORTED) 1043 # define PNG_READ_TEXT_SUPPORTED 1044 # define PNG_TEXT_SUPPORTED 1045 #endif 1046 1047 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ 1048 1049 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS 1050 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED 1051 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1052 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 1053 # endif 1054 #endif 1055 #if !defined(PNG_NO_READ_USER_CHUNKS) && \ 1056 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) 1057 # define PNG_READ_USER_CHUNKS_SUPPORTED 1058 # define PNG_USER_CHUNKS_SUPPORTED 1059 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS 1060 # undef PNG_NO_READ_UNKNOWN_CHUNKS 1061 # endif 1062 # ifdef PNG_NO_HANDLE_AS_UNKNOWN 1063 # undef PNG_NO_HANDLE_AS_UNKNOWN 1064 # endif 1065 #endif 1066 1067 #ifndef PNG_NO_HANDLE_AS_UNKNOWN 1068 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1069 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1070 # endif 1071 #endif 1072 1073 #ifdef PNG_WRITE_SUPPORTED 1074 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 1075 1076 #ifdef PNG_NO_WRITE_TEXT 1077 # define PNG_NO_WRITE_iTXt 1078 # define PNG_NO_WRITE_tEXt 1079 # define PNG_NO_WRITE_zTXt 1080 #endif 1081 #ifndef PNG_NO_WRITE_bKGD 1082 # define PNG_WRITE_bKGD_SUPPORTED 1083 # ifndef PNG_bKGD_SUPPORTED 1084 # define PNG_bKGD_SUPPORTED 1085 # endif 1086 #endif 1087 #ifndef PNG_NO_WRITE_cHRM 1088 # define PNG_WRITE_cHRM_SUPPORTED 1089 # ifndef PNG_cHRM_SUPPORTED 1090 # define PNG_cHRM_SUPPORTED 1091 # endif 1092 #endif 1093 #ifndef PNG_NO_WRITE_gAMA 1094 # define PNG_WRITE_gAMA_SUPPORTED 1095 # ifndef PNG_gAMA_SUPPORTED 1096 # define PNG_gAMA_SUPPORTED 1097 # endif 1098 #endif 1099 #ifndef PNG_NO_WRITE_hIST 1100 # define PNG_WRITE_hIST_SUPPORTED 1101 # ifndef PNG_hIST_SUPPORTED 1102 # define PNG_hIST_SUPPORTED 1103 # endif 1104 #endif 1105 #ifndef PNG_NO_WRITE_iCCP 1106 # define PNG_WRITE_iCCP_SUPPORTED 1107 # ifndef PNG_iCCP_SUPPORTED 1108 # define PNG_iCCP_SUPPORTED 1109 # endif 1110 #endif 1111 #ifndef PNG_NO_WRITE_iTXt 1112 # ifndef PNG_WRITE_iTXt_SUPPORTED 1113 # define PNG_WRITE_iTXt_SUPPORTED 1114 # endif 1115 # ifndef PNG_iTXt_SUPPORTED 1116 # define PNG_iTXt_SUPPORTED 1117 # endif 1118 #endif 1119 #ifndef PNG_NO_WRITE_oFFs 1120 # define PNG_WRITE_oFFs_SUPPORTED 1121 # ifndef PNG_oFFs_SUPPORTED 1122 # define PNG_oFFs_SUPPORTED 1123 # endif 1124 #endif 1125 #ifndef PNG_NO_WRITE_pCAL 1126 # define PNG_WRITE_pCAL_SUPPORTED 1127 # ifndef PNG_pCAL_SUPPORTED 1128 # define PNG_pCAL_SUPPORTED 1129 # endif 1130 #endif 1131 #ifndef PNG_NO_WRITE_sCAL 1132 # define PNG_WRITE_sCAL_SUPPORTED 1133 # ifndef PNG_sCAL_SUPPORTED 1134 # define PNG_sCAL_SUPPORTED 1135 # endif 1136 #endif 1137 #ifndef PNG_NO_WRITE_pHYs 1138 # define PNG_WRITE_pHYs_SUPPORTED 1139 # ifndef PNG_pHYs_SUPPORTED 1140 # define PNG_pHYs_SUPPORTED 1141 # endif 1142 #endif 1143 #ifndef PNG_NO_WRITE_sBIT 1144 # define PNG_WRITE_sBIT_SUPPORTED 1145 # ifndef PNG_sBIT_SUPPORTED 1146 # define PNG_sBIT_SUPPORTED 1147 # endif 1148 #endif 1149 #ifndef PNG_NO_WRITE_sPLT 1150 # define PNG_WRITE_sPLT_SUPPORTED 1151 # ifndef PNG_sPLT_SUPPORTED 1152 # define PNG_sPLT_SUPPORTED 1153 # endif 1154 #endif 1155 #ifndef PNG_NO_WRITE_sRGB 1156 # define PNG_WRITE_sRGB_SUPPORTED 1157 # ifndef PNG_sRGB_SUPPORTED 1158 # define PNG_sRGB_SUPPORTED 1159 # endif 1160 #endif 1161 #ifndef PNG_NO_WRITE_tEXt 1162 # define PNG_WRITE_tEXt_SUPPORTED 1163 # ifndef PNG_tEXt_SUPPORTED 1164 # define PNG_tEXt_SUPPORTED 1165 # endif 1166 #endif 1167 #ifndef PNG_NO_WRITE_tIME 1168 # define PNG_WRITE_tIME_SUPPORTED 1169 # ifndef PNG_tIME_SUPPORTED 1170 # define PNG_tIME_SUPPORTED 1171 # endif 1172 #endif 1173 #ifndef PNG_NO_WRITE_tRNS 1174 # define PNG_WRITE_tRNS_SUPPORTED 1175 # ifndef PNG_tRNS_SUPPORTED 1176 # define PNG_tRNS_SUPPORTED 1177 # endif 1178 #endif 1179 #ifndef PNG_NO_WRITE_zTXt 1180 # define PNG_WRITE_zTXt_SUPPORTED 1181 # ifndef PNG_zTXt_SUPPORTED 1182 # define PNG_zTXt_SUPPORTED 1183 # endif 1184 #endif 1185 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ 1186 defined(PNG_WRITE_zTXt_SUPPORTED) 1187 # define PNG_WRITE_TEXT_SUPPORTED 1188 # ifndef PNG_TEXT_SUPPORTED 1189 # define PNG_TEXT_SUPPORTED 1190 # endif 1191 #endif 1192 1193 #ifdef PNG_WRITE_tIME_SUPPORTED 1194 # ifndef PNG_NO_CONVERT_tIME 1195 # ifndef _WIN32_WCE 1196 /* The "tm" structure is not supported on WindowsCE */ 1197 # ifndef PNG_CONVERT_tIME_SUPPORTED 1198 # define PNG_CONVERT_tIME_SUPPORTED 1199 # endif 1200 # endif 1201 # endif 1202 #endif 1203 1204 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ 1205 1206 #if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED) 1207 # define PNG_WRITE_FILTER_SUPPORTED 1208 #endif 1209 1210 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS 1211 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1212 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1213 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 1214 # endif 1215 #endif 1216 1217 #ifndef PNG_NO_HANDLE_AS_UNKNOWN 1218 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1219 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1220 # endif 1221 #endif 1222 #endif /* PNG_WRITE_SUPPORTED */ 1223 1224 /* Turn this off to disable png_read_png() and 1225 * png_write_png() and leave the row_pointers member 1226 * out of the info structure. 1227 */ 1228 #ifndef PNG_NO_INFO_IMAGE 1229 # define PNG_INFO_IMAGE_SUPPORTED 1230 #endif 1231 1232 /* Need the time information for converting tIME chunks */ 1233 #ifdef PNG_CONVERT_tIME_SUPPORTED 1234 /* "time.h" functions are not supported on WindowsCE */ 1235 # include <time.h> 1236 #endif 1237 1238 /* Some typedefs to get us started. These should be safe on most of the 1239 * common platforms. The typedefs should be at least as large as the 1240 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they 1241 * don't have to be exactly that size. Some compilers dislike passing 1242 * unsigned shorts as function parameters, so you may be better off using 1243 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may 1244 * want to have unsigned int for png_uint_32 instead of unsigned long. 1245 */ 1246 1247 typedef unsigned long png_uint_32; 1248 typedef long png_int_32; 1249 typedef unsigned short png_uint_16; 1250 typedef short png_int_16; 1251 typedef unsigned char png_byte; 1252 1253 /* This is usually size_t. It is typedef'ed just in case you need it to 1254 change (I'm not sure if you will or not, so I thought I'd be safe) */ 1255 #ifdef PNG_SIZE_T 1256 typedef PNG_SIZE_T png_size_t; 1257 # define png_sizeof(x) png_convert_size(sizeof(x)) 1258 #else 1259 typedef size_t png_size_t; 1260 # define png_sizeof(x) sizeof(x) 1261 #endif 1262 1263 /* The following is needed for medium model support. It cannot be in the 1264 * PNG_INTERNAL section. Needs modification for other compilers besides 1265 * MSC. Model independent support declares all arrays and pointers to be 1266 * large using the far keyword. The zlib version used must also support 1267 * model independent data. As of version zlib 1.0.4, the necessary changes 1268 * have been made in zlib. The USE_FAR_KEYWORD define triggers other 1269 * changes that are needed. (Tim Wegner) 1270 */ 1271 1272 /* Separate compiler dependencies (problem here is that zlib.h always 1273 defines FAR. (SJT) */ 1274 #ifdef __BORLANDC__ 1275 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) 1276 # define LDATA 1 1277 # else 1278 # define LDATA 0 1279 # endif 1280 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ 1281 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) 1282 # define PNG_MAX_MALLOC_64K 1283 # if (LDATA != 1) 1284 # ifndef FAR 1285 # define FAR __far 1286 # endif 1287 # define USE_FAR_KEYWORD 1288 # endif /* LDATA != 1 */ 1289 /* Possibly useful for moving data out of default segment. 1290 * Uncomment it if you want. Could also define FARDATA as 1291 * const if your compiler supports it. (SJT) 1292 # define FARDATA FAR 1293 */ 1294 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */ 1295 #endif /* __BORLANDC__ */ 1296 1297 1298 /* Suggest testing for specific compiler first before testing for 1299 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, 1300 * making reliance oncertain keywords suspect. (SJT) 1301 */ 1302 1303 /* MSC Medium model */ 1304 #ifdef FAR 1305 # ifdef M_I86MM 1306 # define USE_FAR_KEYWORD 1307 # define FARDATA FAR 1308 # include <dos.h> 1309 # endif 1310 #endif 1311 1312 /* SJT: default case */ 1313 #ifndef FAR 1314 # define FAR 1315 #endif 1316 1317 /* At this point FAR is always defined */ 1318 #ifndef FARDATA 1319 # define FARDATA 1320 #endif 1321 1322 /* Typedef for floating-point numbers that are converted 1323 to fixed-point with a multiple of 100,000, e.g., int_gamma */ 1324 typedef png_int_32 png_fixed_point; 1325 1326 /* Add typedefs for pointers */ 1327 typedef void FAR * png_voidp; 1328 typedef png_byte FAR * png_bytep; 1329 typedef png_uint_32 FAR * png_uint_32p; 1330 typedef png_int_32 FAR * png_int_32p; 1331 typedef png_uint_16 FAR * png_uint_16p; 1332 typedef png_int_16 FAR * png_int_16p; 1333 typedef PNG_CONST char FAR * png_const_charp; 1334 typedef char FAR * png_charp; 1335 typedef png_fixed_point FAR * png_fixed_point_p; 1336 1337 #ifndef PNG_NO_STDIO 1338 #ifdef _WIN32_WCE 1339 typedef HANDLE png_FILE_p; 1340 #else 1341 typedef FILE * png_FILE_p; 1342 #endif 1343 #endif 1344 1345 #ifdef PNG_FLOATING_POINT_SUPPORTED 1346 typedef double FAR * png_doublep; 1347 #endif 1348 1349 /* Pointers to pointers; i.e. arrays */ 1350 typedef png_byte FAR * FAR * png_bytepp; 1351 typedef png_uint_32 FAR * FAR * png_uint_32pp; 1352 typedef png_int_32 FAR * FAR * png_int_32pp; 1353 typedef png_uint_16 FAR * FAR * png_uint_16pp; 1354 typedef png_int_16 FAR * FAR * png_int_16pp; 1355 typedef PNG_CONST char FAR * FAR * png_const_charpp; 1356 typedef char FAR * FAR * png_charpp; 1357 typedef png_fixed_point FAR * FAR * png_fixed_point_pp; 1358 #ifdef PNG_FLOATING_POINT_SUPPORTED 1359 typedef double FAR * FAR * png_doublepp; 1360 #endif 1361 1362 /* Pointers to pointers to pointers; i.e., pointer to array */ 1363 typedef char FAR * FAR * FAR * png_charppp; 1364 1365 #if defined(PNG_1_0_X) || defined(PNG_1_2_X) 1366 /* SPC - Is this stuff deprecated? */ 1367 /* It'll be removed as of libpng-1.4.0 - GR-P */ 1368 /* libpng typedefs for types in zlib. If zlib changes 1369 * or another compression library is used, then change these. 1370 * Eliminates need to change all the source files. 1371 */ 1372 typedef charf * png_zcharp; 1373 typedef charf * FAR * png_zcharpp; 1374 typedef z_stream FAR * png_zstreamp; 1375 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */ 1376 1377 /* 1378 * Define PNG_BUILD_DLL if the module being built is a Windows 1379 * LIBPNG DLL. 1380 * 1381 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. 1382 * It is equivalent to Microsoft predefined macro _DLL that is 1383 * automatically defined when you compile using the share 1384 * version of the CRT (C Run-Time library) 1385 * 1386 * The cygwin mods make this behavior a little different: 1387 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin 1388 * Define PNG_STATIC if you are building a static library for use with cygwin, 1389 * -or- if you are building an application that you want to link to the 1390 * static library. 1391 * PNG_USE_DLL is defined by default (no user action needed) unless one of 1392 * the other flags is defined. 1393 */ 1394 1395 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) 1396 # define PNG_DLL 1397 #endif 1398 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. 1399 * When building a static lib, default to no GLOBAL ARRAYS, but allow 1400 * command-line override 1401 */ 1402 #ifdef __CYGWIN__ 1403 # ifndef PNG_STATIC 1404 # ifdef PNG_USE_GLOBAL_ARRAYS 1405 # undef PNG_USE_GLOBAL_ARRAYS 1406 # endif 1407 # ifndef PNG_USE_LOCAL_ARRAYS 1408 # define PNG_USE_LOCAL_ARRAYS 1409 # endif 1410 # else 1411 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) 1412 # ifdef PNG_USE_GLOBAL_ARRAYS 1413 # undef PNG_USE_GLOBAL_ARRAYS 1414 # endif 1415 # endif 1416 # endif 1417 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1418 # define PNG_USE_LOCAL_ARRAYS 1419 # endif 1420 #endif 1421 1422 /* Do not use global arrays (helps with building DLL's) 1423 * They are no longer used in libpng itself, since version 1.0.5c, 1424 * but might be required for some pre-1.0.5c applications. 1425 */ 1426 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1427 # if defined(PNG_NO_GLOBAL_ARRAYS) || \ 1428 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER) 1429 # define PNG_USE_LOCAL_ARRAYS 1430 # else 1431 # define PNG_USE_GLOBAL_ARRAYS 1432 # endif 1433 #endif 1434 1435 #ifdef __CYGWIN__ 1436 # undef PNGAPI 1437 # define PNGAPI __cdecl 1438 # undef PNG_IMPEXP 1439 # define PNG_IMPEXP 1440 #endif 1441 1442 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", 1443 * you may get warnings regarding the linkage of png_zalloc and png_zfree. 1444 * Don't ignore those warnings; you must also reset the default calling 1445 * convention in your compiler to match your PNGAPI, and you must build 1446 * zlib and your applications the same way you build libpng. 1447 */ 1448 1449 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF) 1450 # ifndef PNG_NO_MODULEDEF 1451 # define PNG_NO_MODULEDEF 1452 # endif 1453 #endif 1454 1455 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) 1456 # define PNG_IMPEXP 1457 #endif 1458 1459 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ 1460 (( defined(_Windows) || defined(_WINDOWS) || \ 1461 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) 1462 1463 # ifndef PNGAPI 1464 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) 1465 # define PNGAPI __cdecl 1466 # else 1467 # define PNGAPI _cdecl 1468 # endif 1469 # endif 1470 1471 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ 1472 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) 1473 # define PNG_IMPEXP 1474 # endif 1475 1476 # ifndef PNG_IMPEXP 1477 1478 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol 1479 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol 1480 1481 /* Borland/Microsoft */ 1482 # if defined(_MSC_VER) || defined(__BORLANDC__) 1483 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) 1484 # define PNG_EXPORT PNG_EXPORT_TYPE1 1485 # else 1486 # define PNG_EXPORT PNG_EXPORT_TYPE2 1487 # ifdef PNG_BUILD_DLL 1488 # define PNG_IMPEXP __export 1489 # else 1490 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in 1491 VC++ */ 1492 # endif /* Exists in Borland C++ for 1493 C++ classes (== huge) */ 1494 # endif 1495 # endif 1496 1497 # ifndef PNG_IMPEXP 1498 # ifdef PNG_BUILD_DLL 1499 # define PNG_IMPEXP __declspec(dllexport) 1500 # else 1501 # define PNG_IMPEXP __declspec(dllimport) 1502 # endif 1503 # endif 1504 # endif /* PNG_IMPEXP */ 1505 #else /* !(DLL || non-cygwin WINDOWS) */ 1506 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 1507 # ifndef PNGAPI 1508 # define PNGAPI _System 1509 # endif 1510 # else 1511 # if 0 /* ... other platforms, with other meanings */ 1512 # endif 1513 # endif 1514 #endif 1515 1516 #ifndef PNGAPI 1517 # define PNGAPI 1518 #endif 1519 #ifndef PNG_IMPEXP 1520 # define PNG_IMPEXP 1521 #endif 1522 1523 #ifdef PNG_BUILDSYMS 1524 # ifndef PNG_EXPORT 1525 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END 1526 # endif 1527 # ifdef PNG_USE_GLOBAL_ARRAYS 1528 # ifndef PNG_EXPORT_VAR 1529 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT 1530 # endif 1531 # endif 1532 #endif 1533 1534 #ifndef PNG_EXPORT 1535 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol 1536 #endif 1537 1538 #ifdef PNG_USE_GLOBAL_ARRAYS 1539 # ifndef PNG_EXPORT_VAR 1540 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type 1541 # endif 1542 #endif 1543 1544 #ifdef PNG_PEDANTIC_WARNINGS 1545 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED 1546 # define PNG_PEDANTIC_WARNINGS_SUPPORTED 1547 # endif 1548 #endif 1549 1550 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED 1551 /* Support for compiler specific function attributes. These are used 1552 * so that where compiler support is available incorrect use of API 1553 * functions in png.h will generate compiler warnings. Added at libpng 1554 * version 1.2.41. 1555 */ 1556 # ifdef __GNUC__ 1557 # ifndef PNG_USE_RESULT 1558 # define PNG_USE_RESULT __attribute__((__warn_unused_result__)) 1559 # endif 1560 # ifndef PNG_NORETURN 1561 # define PNG_NORETURN __attribute__((__noreturn__)) 1562 # endif 1563 # ifndef PNG_ALLOCATED 1564 # define PNG_ALLOCATED __attribute__((__malloc__)) 1565 # endif 1566 1567 /* This specifically protects structure members that should only be 1568 * accessed from within the library, therefore should be empty during 1569 * a library build. 1570 */ 1571 # ifndef PNG_DEPRECATED 1572 # define PNG_DEPRECATED __attribute__((__deprecated__)) 1573 # endif 1574 # ifndef PNG_DEPSTRUCT 1575 # define PNG_DEPSTRUCT __attribute__((__deprecated__)) 1576 # endif 1577 # ifndef PNG_PRIVATE 1578 # if 0 /* Doesn't work so we use deprecated instead*/ 1579 # define PNG_PRIVATE \ 1580 __attribute__((warning("This function is not exported by libpng."))) 1581 # else 1582 # define PNG_PRIVATE \ 1583 __attribute__((__deprecated__)) 1584 # endif 1585 # endif /* PNG_PRIVATE */ 1586 # endif /* __GNUC__ */ 1587 #endif /* PNG_PEDANTIC_WARNINGS */ 1588 1589 #ifndef PNG_DEPRECATED 1590 # define PNG_DEPRECATED /* Use of this function is deprecated */ 1591 #endif 1592 #ifndef PNG_USE_RESULT 1593 # define PNG_USE_RESULT /* The result of this function must be checked */ 1594 #endif 1595 #ifndef PNG_NORETURN 1596 # define PNG_NORETURN /* This function does not return */ 1597 #endif 1598 #ifndef PNG_ALLOCATED 1599 # define PNG_ALLOCATED /* The result of the function is new memory */ 1600 #endif 1601 #ifndef PNG_DEPSTRUCT 1602 # define PNG_DEPSTRUCT /* Access to this struct member is deprecated */ 1603 #endif 1604 #ifndef PNG_PRIVATE 1605 # define PNG_PRIVATE /* This is a private libpng function */ 1606 #endif 1607 1608 /* User may want to use these so they are not in PNG_INTERNAL. Any library 1609 * functions that are passed far data must be model independent. 1610 */ 1611 1612 #ifndef PNG_ABORT 1613 # define PNG_ABORT() abort() 1614 #endif 1615 1616 #ifdef PNG_SETJMP_SUPPORTED 1617 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) 1618 #else 1619 # define png_jmpbuf(png_ptr) \ 1620 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) 1621 #endif 1622 1623 #ifdef USE_FAR_KEYWORD /* memory model independent fns */ 1624 /* Use this to make far-to-near assignments */ 1625 # define CHECK 1 1626 # define NOCHECK 0 1627 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) 1628 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) 1629 # define png_snprintf _fsnprintf /* Added to v 1.2.19 */ 1630 # define png_strlen _fstrlen 1631 # define png_memcmp _fmemcmp /* SJT: added */ 1632 # define png_memcpy _fmemcpy 1633 # define png_memset _fmemset 1634 #else /* Use the usual functions */ 1635 # define CVT_PTR(ptr) (ptr) 1636 # define CVT_PTR_NOCHECK(ptr) (ptr) 1637 # ifndef PNG_NO_SNPRINTF 1638 # ifdef _MSC_VER 1639 # define png_snprintf _snprintf /* Added to v 1.2.19 */ 1640 # define png_snprintf2 _snprintf 1641 # define png_snprintf6 _snprintf 1642 # else 1643 # define png_snprintf snprintf /* Added to v 1.2.19 */ 1644 # define png_snprintf2 snprintf 1645 # define png_snprintf6 snprintf 1646 # endif 1647 # else 1648 /* You don't have or don't want to use snprintf(). Caution: Using 1649 * sprintf instead of snprintf exposes your application to accidental 1650 * or malevolent buffer overflows. If you don't have snprintf() 1651 * as a general rule you should provide one (you can get one from 1652 * Portable OpenSSH). 1653 */ 1654 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1) 1655 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2) 1656 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \ 1657 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6) 1658 # endif 1659 # define png_strlen strlen 1660 # define png_memcmp memcmp /* SJT: added */ 1661 # define png_memcpy memcpy 1662 # define png_memset memset 1663 #endif 1664 /* End of memory model independent support */ 1665 1666 /* Just a little check that someone hasn't tried to define something 1667 * contradictory. 1668 */ 1669 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) 1670 # undef PNG_ZBUF_SIZE 1671 # define PNG_ZBUF_SIZE 65536L 1672 #endif 1673 1674 /* Added at libpng-1.2.8 */ 1675 #endif /* PNG_VERSION_INFO_ONLY */ 1676 1677 #endif /* PNGCONF_H */