1 2 /* pngconf.h - machine configurable file for libpng 3 * 4 * libpng version 1.2.46 - July 9, 2011 5 * Copyright (c) 1998-2011 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 #ifndef PNG_NO_INDEX_SUPPORTED 26 # define PNG_INDEX_SUPPORTED 27 #endif 28 29 /* 30 * PNG_USER_CONFIG has to be defined on the compiler command line. This 31 * includes the resource compiler for Windows DLL configurations. 32 */ 33 #ifdef PNG_USER_CONFIG 34 # ifndef PNG_USER_PRIVATEBUILD 35 # define PNG_USER_PRIVATEBUILD 36 # endif 37 #include "pngusr.h" 38 #endif 39 40 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */ 41 #ifdef PNG_CONFIGURE_LIBPNG 42 #ifdef HAVE_CONFIG_H 43 #include "config.h" 44 #endif 45 #endif 46 47 /* 48 * Added at libpng-1.2.8 49 * 50 * If you create a private DLL you need to define in "pngusr.h" the followings: 51 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of 52 * the DLL was built> 53 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons." 54 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to 55 * distinguish your DLL from those of the official release. These 56 * correspond to the trailing letters that come after the version 57 * number and must match your private DLL name> 58 * e.g. // private DLL "libpng13gx.dll" 59 * #define PNG_USER_DLLFNAME_POSTFIX "gx" 60 * 61 * The following macros are also at your disposal if you want to complete the 62 * DLL VERSIONINFO structure. 63 * - PNG_USER_VERSIONINFO_COMMENTS 64 * - PNG_USER_VERSIONINFO_COMPANYNAME 65 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS 66 */ 67 68 #ifdef __STDC__ 69 #ifdef SPECIALBUILD 70 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\ 71 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.") 72 #endif 73 74 #ifdef PRIVATEBUILD 75 # pragma message("PRIVATEBUILD is deprecated.\ 76 Use PNG_USER_PRIVATEBUILD instead.") 77 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD 78 #endif 79 #endif /* __STDC__ */ 80 81 #ifndef PNG_VERSION_INFO_ONLY 82 83 /* End of material added to libpng-1.2.8 */ 84 85 /* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble 86 Restored at libpng-1.2.21 */ 87 #if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \ 88 !defined(PNG_WARN_UNINITIALIZED_ROW) 89 # define PNG_WARN_UNINITIALIZED_ROW 1 90 #endif 91 /* End of material added at libpng-1.2.19/1.2.21 */ 92 93 /* This is the size of the compression buffer, and thus the size of 94 * an IDAT chunk. Make this whatever size you feel is best for your 95 * machine. One of these will be allocated per png_struct. When this 96 * is full, it writes the data to the disk, and does some other 97 * calculations. Making this an extremely small size will slow 98 * the library down, but you may want to experiment to determine 99 * where it becomes significant, if you are concerned with memory 100 * usage. Note that zlib allocates at least 32Kb also. For readers, 101 * this describes the size of the buffer available to read the data in. 102 * Unless this gets smaller than the size of a row (compressed), 103 * it should not make much difference how big this is. 104 */ 105 106 #ifndef PNG_ZBUF_SIZE 107 # define PNG_ZBUF_SIZE 8192 108 #endif 109 110 /* Enable if you want a write-only libpng */ 111 112 #ifndef PNG_NO_READ_SUPPORTED 113 # define PNG_READ_SUPPORTED 114 #endif 115 116 /* Enable if you want a read-only libpng */ 117 118 #ifndef PNG_NO_WRITE_SUPPORTED 119 # define PNG_WRITE_SUPPORTED 120 #endif 121 122 /* Enabled in 1.2.41. */ 123 #ifdef PNG_ALLOW_BENIGN_ERRORS 124 # define png_benign_error png_warning 125 # define png_chunk_benign_error png_chunk_warning 126 #else 127 # ifndef PNG_BENIGN_ERRORS_SUPPORTED 128 # define png_benign_error png_error 129 # define png_chunk_benign_error png_chunk_error 130 # endif 131 #endif 132 133 /* Added in libpng-1.2.41 */ 134 #if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED) 135 # define PNG_WARNINGS_SUPPORTED 136 #endif 137 138 #if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED) 139 # define PNG_ERROR_TEXT_SUPPORTED 140 #endif 141 142 #if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED) 143 # define PNG_CHECK_cHRM_SUPPORTED 144 #endif 145 146 /* Enabled by default in 1.2.0. You can disable this if you don't need to 147 * support PNGs that are embedded in MNG datastreams 148 */ 149 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES) 150 # ifndef PNG_MNG_FEATURES_SUPPORTED 151 # define PNG_MNG_FEATURES_SUPPORTED 152 # endif 153 #endif 154 155 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED 156 # ifndef PNG_FLOATING_POINT_SUPPORTED 157 # define PNG_FLOATING_POINT_SUPPORTED 158 # endif 159 #endif 160 161 /* If you are running on a machine where you cannot allocate more 162 * than 64K of memory at once, uncomment this. While libpng will not 163 * normally need that much memory in a chunk (unless you load up a very 164 * large file), zlib needs to know how big of a chunk it can use, and 165 * libpng thus makes sure to check any memory allocation to verify it 166 * will fit into memory. 167 #define PNG_MAX_MALLOC_64K 168 */ 169 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) 170 # define PNG_MAX_MALLOC_64K 171 #endif 172 173 /* Special munging to support doing things the 'cygwin' way: 174 * 'Normal' png-on-win32 defines/defaults: 175 * PNG_BUILD_DLL -- building dll 176 * PNG_USE_DLL -- building an application, linking to dll 177 * (no define) -- building static library, or building an 178 * application and linking to the static lib 179 * 'Cygwin' defines/defaults: 180 * PNG_BUILD_DLL -- (ignored) building the dll 181 * (no define) -- (ignored) building an application, linking to the dll 182 * PNG_STATIC -- (ignored) building the static lib, or building an 183 * application that links to the static lib. 184 * ALL_STATIC -- (ignored) building various static libs, or building an 185 * application that links to the static libs. 186 * Thus, 187 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and 188 * this bit of #ifdefs will define the 'correct' config variables based on 189 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but 190 * unnecessary. 191 * 192 * Also, the precedence order is: 193 * ALL_STATIC (since we can't #undef something outside our namespace) 194 * PNG_BUILD_DLL 195 * PNG_STATIC 196 * (nothing) == PNG_USE_DLL 197 * 198 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent 199 * of auto-import in binutils, we no longer need to worry about 200 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, 201 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes 202 * to __declspec() stuff. However, we DO need to worry about 203 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults 204 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. 205 */ 206 #ifdef __CYGWIN__ 207 # ifdef ALL_STATIC 208 # ifdef PNG_BUILD_DLL 209 # undef PNG_BUILD_DLL 210 # endif 211 # ifdef PNG_USE_DLL 212 # undef PNG_USE_DLL 213 # endif 214 # ifdef PNG_DLL 215 # undef PNG_DLL 216 # endif 217 # ifndef PNG_STATIC 218 # define PNG_STATIC 219 # endif 220 # else 221 # ifdef PNG_BUILD_DLL 222 # ifdef PNG_STATIC 223 # undef PNG_STATIC 224 # endif 225 # ifdef PNG_USE_DLL 226 # undef PNG_USE_DLL 227 # endif 228 # ifndef PNG_DLL 229 # define PNG_DLL 230 # endif 231 # else 232 # ifdef PNG_STATIC 233 # ifdef PNG_USE_DLL 234 # undef PNG_USE_DLL 235 # endif 236 # ifdef PNG_DLL 237 # undef PNG_DLL 238 # endif 239 # else 240 # ifndef PNG_USE_DLL 241 # define PNG_USE_DLL 242 # endif 243 # ifndef PNG_DLL 244 # define PNG_DLL 245 # endif 246 # endif 247 # endif 248 # endif 249 #endif 250 251 /* This protects us against compilers that run on a windowing system 252 * and thus don't have or would rather us not use the stdio types: 253 * stdin, stdout, and stderr. The only one currently used is stderr 254 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will 255 * prevent these from being compiled and used. #defining PNG_NO_STDIO 256 * will also prevent these, plus will prevent the entire set of stdio 257 * macros and functions (FILE *, printf, etc.) from being compiled and used, 258 * unless (PNG_DEBUG > 0) has been #defined. 259 * 260 * #define PNG_NO_CONSOLE_IO 261 * #define PNG_NO_STDIO 262 */ 263 264 #if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED) 265 # define PNG_STDIO_SUPPORTED 266 #endif 267 268 #ifdef _WIN32_WCE 269 # include <windows.h> 270 /* Console I/O functions are not supported on WindowsCE */ 271 # define PNG_NO_CONSOLE_IO 272 /* abort() may not be supported on some/all Windows CE platforms */ 273 # define PNG_ABORT() exit(-1) 274 # ifdef PNG_DEBUG 275 # undef PNG_DEBUG 276 # endif 277 #endif 278 279 #ifdef PNG_BUILD_DLL 280 # ifndef PNG_CONSOLE_IO_SUPPORTED 281 # ifndef PNG_NO_CONSOLE_IO 282 # define PNG_NO_CONSOLE_IO 283 # endif 284 # endif 285 #endif 286 287 # ifdef PNG_NO_STDIO 288 # ifndef PNG_NO_CONSOLE_IO 289 # define PNG_NO_CONSOLE_IO 290 # endif 291 # ifdef PNG_DEBUG 292 # if (PNG_DEBUG > 0) 293 # include <stdio.h> 294 # endif 295 # endif 296 # else 297 # ifndef _WIN32_WCE 298 /* "stdio.h" functions are not supported on WindowsCE */ 299 # include <stdio.h> 300 # endif 301 # endif 302 303 #if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED) 304 # define PNG_CONSOLE_IO_SUPPORTED 305 #endif 306 307 /* This macro protects us against machines that don't have function 308 * prototypes (ie K&R style headers). If your compiler does not handle 309 * function prototypes, define this macro and use the included ansi2knr. 310 * I've always been able to use _NO_PROTO as the indicator, but you may 311 * need to drag the empty declaration out in front of here, or change the 312 * ifdef to suit your own needs. 313 */ 314 #ifndef PNGARG 315 316 #ifdef OF /* zlib prototype munger */ 317 # define PNGARG(arglist) OF(arglist) 318 #else 319 320 #ifdef _NO_PROTO 321 # define PNGARG(arglist) () 322 # ifndef PNG_TYPECAST_NULL 323 # define PNG_TYPECAST_NULL 324 # endif 325 #else 326 # define PNGARG(arglist) arglist 327 #endif /* _NO_PROTO */ 328 329 330 #endif /* OF */ 331 332 #endif /* PNGARG */ 333 334 /* Try to determine if we are compiling on a Mac. Note that testing for 335 * just __MWERKS__ is not good enough, because the Codewarrior is now used 336 * on non-Mac platforms. 337 */ 338 #ifndef MACOS 339 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ 340 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) 341 # define MACOS 342 # endif 343 #endif 344 345 /* enough people need this for various reasons to include it here */ 346 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) 347 # include <sys/types.h> 348 #endif 349 350 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) 351 # define PNG_SETJMP_SUPPORTED 352 #endif 353 354 #ifdef PNG_SETJMP_SUPPORTED 355 /* This is an attempt to force a single setjmp behaviour on Linux. If 356 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. 357 * 358 * You can bypass this test if you know that your application uses exactly 359 * the same setjmp.h that was included when libpng was built. Only define 360 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the 361 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK 362 * while building a separate libpng library for general use. 363 */ 364 365 # ifndef PNG_SKIP_SETJMP_CHECK 366 # ifdef __linux__ 367 # ifdef _BSD_SOURCE 368 # define PNG_SAVE_BSD_SOURCE 369 # undef _BSD_SOURCE 370 # endif 371 # ifdef _SETJMP_H 372 /* If you encounter a compiler error here, see the explanation 373 * near the end of INSTALL. 374 */ 375 __pngconf.h__ in libpng already includes setjmp.h; 376 __dont__ include it again.; 377 # endif 378 # endif /* __linux__ */ 379 # endif /* PNG_SKIP_SETJMP_CHECK */ 380 381 /* include setjmp.h for error handling */ 382 # include <setjmp.h> 383 384 # ifdef __linux__ 385 # ifdef PNG_SAVE_BSD_SOURCE 386 # ifndef _BSD_SOURCE 387 # define _BSD_SOURCE 388 # endif 389 # undef PNG_SAVE_BSD_SOURCE 390 # endif 391 # endif /* __linux__ */ 392 #endif /* PNG_SETJMP_SUPPORTED */ 393 394 #ifdef BSD 395 # include <strings.h> 396 #else 397 # include <string.h> 398 #endif 399 400 /* Other defines for things like memory and the like can go here. */ 401 #ifdef PNG_INTERNAL 402 403 #include <stdlib.h> 404 405 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which 406 * aren't usually used outside the library (as far as I know), so it is 407 * debatable if they should be exported at all. In the future, when it is 408 * possible to have run-time registry of chunk-handling functions, some of 409 * these will be made available again. 410 #define PNG_EXTERN extern 411 */ 412 #define PNG_EXTERN 413 414 /* Other defines specific to compilers can go here. Try to keep 415 * them inside an appropriate ifdef/endif pair for portability. 416 */ 417 418 #ifdef PNG_FLOATING_POINT_SUPPORTED 419 # ifdef MACOS 420 /* We need to check that <math.h> hasn't already been included earlier 421 * as it seems it doesn't agree with <fp.h>, yet we should really use 422 * <fp.h> if possible. 423 */ 424 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) 425 # include <fp.h> 426 # endif 427 # else 428 # include <math.h> 429 # endif 430 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) 431 /* Amiga SAS/C: We must include builtin FPU functions when compiling using 432 * MATH=68881 433 */ 434 # include <m68881.h> 435 # endif 436 #endif 437 438 /* Codewarrior on NT has linking problems without this. */ 439 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) 440 # define PNG_ALWAYS_EXTERN 441 #endif 442 443 /* This provides the non-ANSI (far) memory allocation routines. */ 444 #if defined(__TURBOC__) && defined(__MSDOS__) 445 # include <mem.h> 446 # include <alloc.h> 447 #endif 448 449 /* I have no idea why is this necessary... */ 450 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ 451 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) 452 # include <malloc.h> 453 #endif 454 455 /* This controls how fine the dithering gets. As this allocates 456 * a largish chunk of memory (32K), those who are not as concerned 457 * with dithering quality can decrease some or all of these. 458 */ 459 #ifndef PNG_DITHER_RED_BITS 460 # define PNG_DITHER_RED_BITS 5 461 #endif 462 #ifndef PNG_DITHER_GREEN_BITS 463 # define PNG_DITHER_GREEN_BITS 5 464 #endif 465 #ifndef PNG_DITHER_BLUE_BITS 466 # define PNG_DITHER_BLUE_BITS 5 467 #endif 468 469 /* This controls how fine the gamma correction becomes when you 470 * are only interested in 8 bits anyway. Increasing this value 471 * results in more memory being used, and more pow() functions 472 * being called to fill in the gamma tables. Don't set this value 473 * less then 8, and even that may not work (I haven't tested it). 474 */ 475 476 #ifndef PNG_MAX_GAMMA_8 477 # define PNG_MAX_GAMMA_8 11 478 #endif 479 480 /* This controls how much a difference in gamma we can tolerate before 481 * we actually start doing gamma conversion. 482 */ 483 #ifndef PNG_GAMMA_THRESHOLD 484 # define PNG_GAMMA_THRESHOLD 0.05 485 #endif 486 487 #endif /* PNG_INTERNAL */ 488 489 /* The following uses const char * instead of char * for error 490 * and warning message functions, so some compilers won't complain. 491 * If you do not want to use const, define PNG_NO_CONST here. 492 */ 493 494 #ifndef PNG_NO_CONST 495 # define PNG_CONST const 496 #else 497 # define PNG_CONST 498 #endif 499 500 /* The following defines give you the ability to remove code from the 501 * library that you will not be using. I wish I could figure out how to 502 * automate this, but I can't do that without making it seriously hard 503 * on the users. So if you are not using an ability, change the #define 504 * to and #undef, and that part of the library will not be compiled. If 505 * your linker can't find a function, you may want to make sure the 506 * ability is defined here. Some of these depend upon some others being 507 * defined. I haven't figured out all the interactions here, so you may 508 * have to experiment awhile to get everything to compile. If you are 509 * creating or using a shared library, you probably shouldn't touch this, 510 * as it will affect the size of the structures, and this will cause bad 511 * things to happen if the library and/or application ever change. 512 */ 513 514 /* Any features you will not be using can be undef'ed here */ 515 516 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user 517 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS 518 * on the compile line, then pick and choose which ones to define without 519 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED 520 * if you only want to have a png-compliant reader/writer but don't need 521 * any of the extra transformations. This saves about 80 kbytes in a 522 * typical installation of the library. (PNG_NO_* form added in version 523 * 1.0.1c, for consistency) 524 */ 525 526 /* The size of the png_text structure changed in libpng-1.0.6 when 527 * iTXt support was added. iTXt support was turned off by default through 528 * libpng-1.2.x, to support old apps that malloc the png_text structure 529 * instead of calling png_set_text() and letting libpng malloc it. It 530 * will be turned on by default in libpng-1.4.0. 531 */ 532 533 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 534 # ifndef PNG_NO_iTXt_SUPPORTED 535 # define PNG_NO_iTXt_SUPPORTED 536 # endif 537 # ifndef PNG_NO_READ_iTXt 538 # define PNG_NO_READ_iTXt 539 # endif 540 # ifndef PNG_NO_WRITE_iTXt 541 # define PNG_NO_WRITE_iTXt 542 # endif 543 #endif 544 545 #if !defined(PNG_NO_iTXt_SUPPORTED) 546 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) 547 # define PNG_READ_iTXt 548 # endif 549 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) 550 # define PNG_WRITE_iTXt 551 # endif 552 #endif 553 554 /* The following support, added after version 1.0.0, can be turned off here en 555 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility 556 * with old applications that require the length of png_struct and png_info 557 * to remain unchanged. 558 */ 559 560 #ifdef PNG_LEGACY_SUPPORTED 561 # define PNG_NO_FREE_ME 562 # define PNG_NO_READ_UNKNOWN_CHUNKS 563 # define PNG_NO_WRITE_UNKNOWN_CHUNKS 564 # define PNG_NO_HANDLE_AS_UNKNOWN 565 # define PNG_NO_READ_USER_CHUNKS 566 # define PNG_NO_READ_iCCP 567 # define PNG_NO_WRITE_iCCP 568 # define PNG_NO_READ_iTXt 569 # define PNG_NO_WRITE_iTXt 570 # define PNG_NO_READ_sCAL 571 # define PNG_NO_WRITE_sCAL 572 # define PNG_NO_READ_sPLT 573 # define PNG_NO_WRITE_sPLT 574 # define PNG_NO_INFO_IMAGE 575 # define PNG_NO_READ_RGB_TO_GRAY 576 # define PNG_NO_READ_USER_TRANSFORM 577 # define PNG_NO_WRITE_USER_TRANSFORM 578 # define PNG_NO_USER_MEM 579 # define PNG_NO_READ_EMPTY_PLTE 580 # define PNG_NO_MNG_FEATURES 581 # define PNG_NO_FIXED_POINT_SUPPORTED 582 #endif 583 584 /* Ignore attempt to turn off both floating and fixed point support */ 585 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ 586 !defined(PNG_NO_FIXED_POINT_SUPPORTED) 587 # define PNG_FIXED_POINT_SUPPORTED 588 #endif 589 590 #ifndef PNG_NO_FREE_ME 591 # define PNG_FREE_ME_SUPPORTED 592 #endif 593 594 #ifdef PNG_READ_SUPPORTED 595 596 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ 597 !defined(PNG_NO_READ_TRANSFORMS) 598 # define PNG_READ_TRANSFORMS_SUPPORTED 599 #endif 600 601 #ifdef PNG_READ_TRANSFORMS_SUPPORTED 602 # ifndef PNG_NO_READ_EXPAND 603 # define PNG_READ_EXPAND_SUPPORTED 604 # endif 605 # ifndef PNG_NO_READ_SHIFT 606 # define PNG_READ_SHIFT_SUPPORTED 607 # endif 608 # ifndef PNG_NO_READ_PACK 609 # define PNG_READ_PACK_SUPPORTED 610 # endif 611 # ifndef PNG_NO_READ_BGR 612 # define PNG_READ_BGR_SUPPORTED 613 # endif 614 # ifndef PNG_NO_READ_SWAP 615 # define PNG_READ_SWAP_SUPPORTED 616 # endif 617 # ifndef PNG_NO_READ_PACKSWAP 618 # define PNG_READ_PACKSWAP_SUPPORTED 619 # endif 620 # ifndef PNG_NO_READ_INVERT 621 # define PNG_READ_INVERT_SUPPORTED 622 # endif 623 # ifndef PNG_NO_READ_DITHER 624 # define PNG_READ_DITHER_SUPPORTED 625 # endif 626 # ifndef PNG_NO_READ_BACKGROUND 627 # define PNG_READ_BACKGROUND_SUPPORTED 628 # endif 629 # ifndef PNG_NO_READ_16_TO_8 630 # define PNG_READ_16_TO_8_SUPPORTED 631 # endif 632 # ifndef PNG_NO_READ_FILLER 633 # define PNG_READ_FILLER_SUPPORTED 634 # endif 635 # ifndef PNG_NO_READ_GAMMA 636 # define PNG_READ_GAMMA_SUPPORTED 637 # endif 638 # ifndef PNG_NO_READ_GRAY_TO_RGB 639 # define PNG_READ_GRAY_TO_RGB_SUPPORTED 640 # endif 641 # ifndef PNG_NO_READ_SWAP_ALPHA 642 # define PNG_READ_SWAP_ALPHA_SUPPORTED 643 # endif 644 # ifndef PNG_NO_READ_INVERT_ALPHA 645 # define PNG_READ_INVERT_ALPHA_SUPPORTED 646 # endif 647 # ifndef PNG_NO_READ_STRIP_ALPHA 648 # define PNG_READ_STRIP_ALPHA_SUPPORTED 649 # endif 650 # ifndef PNG_NO_READ_USER_TRANSFORM 651 # define PNG_READ_USER_TRANSFORM_SUPPORTED 652 # endif 653 # ifndef PNG_NO_READ_RGB_TO_GRAY 654 # define PNG_READ_RGB_TO_GRAY_SUPPORTED 655 # endif 656 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */ 657 658 /* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */ 659 #if !defined(PNG_NO_PROGRESSIVE_READ) && \ 660 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */ 661 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ 662 #endif /* about interlacing capability! You'll */ 663 /* still have interlacing unless you change the following define: */ 664 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */ 665 666 /* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */ 667 #if !defined(PNG_NO_SEQUENTIAL_READ) && \ 668 !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \ 669 !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED) 670 # define PNG_SEQUENTIAL_READ_SUPPORTED 671 #endif 672 673 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */ 674 675 #ifndef PNG_NO_READ_COMPOSITE_NODIV 676 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ 677 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ 678 # endif 679 #endif 680 681 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 682 /* Deprecated, will be removed from version 2.0.0. 683 Use PNG_MNG_FEATURES_SUPPORTED instead. */ 684 #ifndef PNG_NO_READ_EMPTY_PLTE 685 # define PNG_READ_EMPTY_PLTE_SUPPORTED 686 #endif 687 #endif 688 689 #endif /* PNG_READ_SUPPORTED */ 690 691 #ifdef PNG_WRITE_SUPPORTED 692 693 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ 694 !defined(PNG_NO_WRITE_TRANSFORMS) 695 # define PNG_WRITE_TRANSFORMS_SUPPORTED 696 #endif 697 698 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED 699 # ifndef PNG_NO_WRITE_SHIFT 700 # define PNG_WRITE_SHIFT_SUPPORTED 701 # endif 702 # ifndef PNG_NO_WRITE_PACK 703 # define PNG_WRITE_PACK_SUPPORTED 704 # endif 705 # ifndef PNG_NO_WRITE_BGR 706 # define PNG_WRITE_BGR_SUPPORTED 707 # endif 708 # ifndef PNG_NO_WRITE_SWAP 709 # define PNG_WRITE_SWAP_SUPPORTED 710 # endif 711 # ifndef PNG_NO_WRITE_PACKSWAP 712 # define PNG_WRITE_PACKSWAP_SUPPORTED 713 # endif 714 # ifndef PNG_NO_WRITE_INVERT 715 # define PNG_WRITE_INVERT_SUPPORTED 716 # endif 717 # ifndef PNG_NO_WRITE_FILLER 718 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ 719 # endif 720 # ifndef PNG_NO_WRITE_SWAP_ALPHA 721 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED 722 # endif 723 #ifndef PNG_1_0_X 724 # ifndef PNG_NO_WRITE_INVERT_ALPHA 725 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED 726 # endif 727 #endif 728 # ifndef PNG_NO_WRITE_USER_TRANSFORM 729 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED 730 # endif 731 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ 732 733 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \ 734 !defined(PNG_WRITE_INTERLACING_SUPPORTED) 735 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant 736 encoders, but can cause trouble 737 if left undefined */ 738 #endif 739 740 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ 741 !defined(PNG_WRITE_WEIGHTED_FILTER) && \ 742 defined(PNG_FLOATING_POINT_SUPPORTED) 743 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED 744 #endif 745 746 #ifndef PNG_NO_WRITE_FLUSH 747 # define PNG_WRITE_FLUSH_SUPPORTED 748 #endif 749 750 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 751 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ 752 #ifndef PNG_NO_WRITE_EMPTY_PLTE 753 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED 754 #endif 755 #endif 756 757 #endif /* PNG_WRITE_SUPPORTED */ 758 759 #ifndef PNG_1_0_X 760 # ifndef PNG_NO_ERROR_NUMBERS 761 # define PNG_ERROR_NUMBERS_SUPPORTED 762 # endif 763 #endif /* PNG_1_0_X */ 764 765 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 766 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) 767 # ifndef PNG_NO_USER_TRANSFORM_PTR 768 # define PNG_USER_TRANSFORM_PTR_SUPPORTED 769 # endif 770 #endif 771 772 #ifndef PNG_NO_STDIO 773 # define PNG_TIME_RFC1123_SUPPORTED 774 #endif 775 776 /* This adds extra functions in pngget.c for accessing data from the 777 * info pointer (added in version 0.99) 778 * png_get_image_width() 779 * png_get_image_height() 780 * png_get_bit_depth() 781 * png_get_color_type() 782 * png_get_compression_type() 783 * png_get_filter_type() 784 * png_get_interlace_type() 785 * png_get_pixel_aspect_ratio() 786 * png_get_pixels_per_meter() 787 * png_get_x_offset_pixels() 788 * png_get_y_offset_pixels() 789 * png_get_x_offset_microns() 790 * png_get_y_offset_microns() 791 */ 792 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) 793 # define PNG_EASY_ACCESS_SUPPORTED 794 #endif 795 796 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 797 * and removed from version 1.2.20. The following will be removed 798 * from libpng-1.4.0 799 */ 800 801 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE) 802 # ifndef PNG_OPTIMIZED_CODE_SUPPORTED 803 # define PNG_OPTIMIZED_CODE_SUPPORTED 804 # endif 805 #endif 806 807 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE) 808 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED 809 # define PNG_ASSEMBLER_CODE_SUPPORTED 810 # endif 811 812 # if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4) 813 /* work around 64-bit gcc compiler bugs in gcc-3.x */ 814 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 815 # define PNG_NO_MMX_CODE 816 # endif 817 # endif 818 819 # ifdef __APPLE__ 820 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 821 # define PNG_NO_MMX_CODE 822 # endif 823 # endif 824 825 # if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh)) 826 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 827 # define PNG_NO_MMX_CODE 828 # endif 829 # endif 830 831 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 832 # define PNG_MMX_CODE_SUPPORTED 833 # endif 834 835 #endif 836 /* end of obsolete code to be removed from libpng-1.4.0 */ 837 838 /* Added at libpng-1.2.0 */ 839 #ifndef PNG_1_0_X 840 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) 841 # define PNG_USER_MEM_SUPPORTED 842 #endif 843 #endif /* PNG_1_0_X */ 844 845 /* Added at libpng-1.2.6 */ 846 #ifndef PNG_1_0_X 847 # ifndef PNG_SET_USER_LIMITS_SUPPORTED 848 # ifndef PNG_NO_SET_USER_LIMITS 849 # define PNG_SET_USER_LIMITS_SUPPORTED 850 # endif 851 # endif 852 #endif /* PNG_1_0_X */ 853 854 /* Added at libpng-1.0.53 and 1.2.43 */ 855 #ifndef PNG_USER_LIMITS_SUPPORTED 856 # ifndef PNG_NO_USER_LIMITS 857 # define PNG_USER_LIMITS_SUPPORTED 858 # endif 859 #endif 860 861 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter 862 * how large, set these limits to 0x7fffffffL 863 */ 864 #ifndef PNG_USER_WIDTH_MAX 865 # define PNG_USER_WIDTH_MAX 1000000L 866 #endif 867 #ifndef PNG_USER_HEIGHT_MAX 868 # define PNG_USER_HEIGHT_MAX 1000000L 869 #endif 870 871 /* Added at libpng-1.2.43. To accept all valid PNGs no matter 872 * how large, set these two limits to 0. 873 */ 874 #ifndef PNG_USER_CHUNK_CACHE_MAX 875 # define PNG_USER_CHUNK_CACHE_MAX 0 876 #endif 877 878 /* Added at libpng-1.2.43 */ 879 #ifndef PNG_USER_CHUNK_MALLOC_MAX 880 # define PNG_USER_CHUNK_MALLOC_MAX 0 881 #endif 882 883 #ifndef PNG_LITERAL_SHARP 884 # define PNG_LITERAL_SHARP 0x23 885 #endif 886 #ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET 887 # define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b 888 #endif 889 #ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET 890 # define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d 891 #endif 892 893 /* Added at libpng-1.2.34 */ 894 #ifndef PNG_STRING_NEWLINE 895 #define PNG_STRING_NEWLINE "\n" 896 #endif 897 898 /* These are currently experimental features, define them if you want */ 899 900 /* very little testing */ 901 /* 902 #ifdef PNG_READ_SUPPORTED 903 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 904 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 905 # endif 906 #endif 907 */ 908 909 /* This is only for PowerPC big-endian and 680x0 systems */ 910 /* some testing */ 911 /* 912 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED 913 # define PNG_READ_BIG_ENDIAN_SUPPORTED 914 #endif 915 */ 916 917 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */ 918 /* 919 #define PNG_NO_POINTER_INDEXING 920 */ 921 922 #if !defined(PNG_NO_POINTER_INDEXING) && \ 923 !defined(PNG_POINTER_INDEXING_SUPPORTED) 924 # define PNG_POINTER_INDEXING_SUPPORTED 925 #endif 926 927 /* These functions are turned off by default, as they will be phased out. */ 928 /* 929 #define PNG_USELESS_TESTS_SUPPORTED 930 #define PNG_CORRECT_PALETTE_SUPPORTED 931 */ 932 933 /* Any chunks you are not interested in, you can undef here. The 934 * ones that allocate memory may be expecially important (hIST, 935 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info 936 * a bit smaller. 937 */ 938 939 #if defined(PNG_READ_SUPPORTED) && \ 940 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 941 !defined(PNG_NO_READ_ANCILLARY_CHUNKS) 942 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 943 #endif 944 945 #if defined(PNG_WRITE_SUPPORTED) && \ 946 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 947 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) 948 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 949 #endif 950 951 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 952 953 #ifdef PNG_NO_READ_TEXT 954 # define PNG_NO_READ_iTXt 955 # define PNG_NO_READ_tEXt 956 # define PNG_NO_READ_zTXt 957 #endif 958 #ifndef PNG_NO_READ_bKGD 959 # define PNG_READ_bKGD_SUPPORTED 960 # define PNG_bKGD_SUPPORTED 961 #endif 962 #ifndef PNG_NO_READ_cHRM 963 # define PNG_READ_cHRM_SUPPORTED 964 # define PNG_cHRM_SUPPORTED 965 #endif 966 #ifndef PNG_NO_READ_gAMA 967 # define PNG_READ_gAMA_SUPPORTED 968 # define PNG_gAMA_SUPPORTED 969 #endif 970 #ifndef PNG_NO_READ_hIST 971 # define PNG_READ_hIST_SUPPORTED 972 # define PNG_hIST_SUPPORTED 973 #endif 974 #ifndef PNG_NO_READ_iCCP 975 # define PNG_READ_iCCP_SUPPORTED 976 # define PNG_iCCP_SUPPORTED 977 #endif 978 #ifndef PNG_NO_READ_iTXt 979 # ifndef PNG_READ_iTXt_SUPPORTED 980 # define PNG_READ_iTXt_SUPPORTED 981 # endif 982 # ifndef PNG_iTXt_SUPPORTED 983 # define PNG_iTXt_SUPPORTED 984 # endif 985 #endif 986 #ifndef PNG_NO_READ_oFFs 987 # define PNG_READ_oFFs_SUPPORTED 988 # define PNG_oFFs_SUPPORTED 989 #endif 990 #ifndef PNG_NO_READ_pCAL 991 # define PNG_READ_pCAL_SUPPORTED 992 # define PNG_pCAL_SUPPORTED 993 #endif 994 #ifndef PNG_NO_READ_sCAL 995 # define PNG_READ_sCAL_SUPPORTED 996 # define PNG_sCAL_SUPPORTED 997 #endif 998 #ifndef PNG_NO_READ_pHYs 999 # define PNG_READ_pHYs_SUPPORTED 1000 # define PNG_pHYs_SUPPORTED 1001 #endif 1002 #ifndef PNG_NO_READ_sBIT 1003 # define PNG_READ_sBIT_SUPPORTED 1004 # define PNG_sBIT_SUPPORTED 1005 #endif 1006 #ifndef PNG_NO_READ_sPLT 1007 # define PNG_READ_sPLT_SUPPORTED 1008 # define PNG_sPLT_SUPPORTED 1009 #endif 1010 #ifndef PNG_NO_READ_sRGB 1011 # define PNG_READ_sRGB_SUPPORTED 1012 # define PNG_sRGB_SUPPORTED 1013 #endif 1014 #ifndef PNG_NO_READ_tEXt 1015 # define PNG_READ_tEXt_SUPPORTED 1016 # define PNG_tEXt_SUPPORTED 1017 #endif 1018 #ifndef PNG_NO_READ_tIME 1019 # define PNG_READ_tIME_SUPPORTED 1020 # define PNG_tIME_SUPPORTED 1021 #endif 1022 #ifndef PNG_NO_READ_tRNS 1023 # define PNG_READ_tRNS_SUPPORTED 1024 # define PNG_tRNS_SUPPORTED 1025 #endif 1026 #ifndef PNG_NO_READ_zTXt 1027 # define PNG_READ_zTXt_SUPPORTED 1028 # define PNG_zTXt_SUPPORTED 1029 #endif 1030 #ifndef PNG_NO_READ_OPT_PLTE 1031 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ 1032 #endif /* optional PLTE chunk in RGB and RGBA images */ 1033 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ 1034 defined(PNG_READ_zTXt_SUPPORTED) 1035 # define PNG_READ_TEXT_SUPPORTED 1036 # define PNG_TEXT_SUPPORTED 1037 #endif 1038 1039 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ 1040 1041 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS 1042 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED 1043 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1044 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 1045 # endif 1046 #endif 1047 #if !defined(PNG_NO_READ_USER_CHUNKS) && \ 1048 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) 1049 # define PNG_READ_USER_CHUNKS_SUPPORTED 1050 # define PNG_USER_CHUNKS_SUPPORTED 1051 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS 1052 # undef PNG_NO_READ_UNKNOWN_CHUNKS 1053 # endif 1054 # ifdef PNG_NO_HANDLE_AS_UNKNOWN 1055 # undef PNG_NO_HANDLE_AS_UNKNOWN 1056 # endif 1057 #endif 1058 1059 #ifndef PNG_NO_HANDLE_AS_UNKNOWN 1060 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1061 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1062 # endif 1063 #endif 1064 1065 #ifdef PNG_WRITE_SUPPORTED 1066 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 1067 1068 #ifdef PNG_NO_WRITE_TEXT 1069 # define PNG_NO_WRITE_iTXt 1070 # define PNG_NO_WRITE_tEXt 1071 # define PNG_NO_WRITE_zTXt 1072 #endif 1073 #ifndef PNG_NO_WRITE_bKGD 1074 # define PNG_WRITE_bKGD_SUPPORTED 1075 # ifndef PNG_bKGD_SUPPORTED 1076 # define PNG_bKGD_SUPPORTED 1077 # endif 1078 #endif 1079 #ifndef PNG_NO_WRITE_cHRM 1080 # define PNG_WRITE_cHRM_SUPPORTED 1081 # ifndef PNG_cHRM_SUPPORTED 1082 # define PNG_cHRM_SUPPORTED 1083 # endif 1084 #endif 1085 #ifndef PNG_NO_WRITE_gAMA 1086 # define PNG_WRITE_gAMA_SUPPORTED 1087 # ifndef PNG_gAMA_SUPPORTED 1088 # define PNG_gAMA_SUPPORTED 1089 # endif 1090 #endif 1091 #ifndef PNG_NO_WRITE_hIST 1092 # define PNG_WRITE_hIST_SUPPORTED 1093 # ifndef PNG_hIST_SUPPORTED 1094 # define PNG_hIST_SUPPORTED 1095 # endif 1096 #endif 1097 #ifndef PNG_NO_WRITE_iCCP 1098 # define PNG_WRITE_iCCP_SUPPORTED 1099 # ifndef PNG_iCCP_SUPPORTED 1100 # define PNG_iCCP_SUPPORTED 1101 # endif 1102 #endif 1103 #ifndef PNG_NO_WRITE_iTXt 1104 # ifndef PNG_WRITE_iTXt_SUPPORTED 1105 # define PNG_WRITE_iTXt_SUPPORTED 1106 # endif 1107 # ifndef PNG_iTXt_SUPPORTED 1108 # define PNG_iTXt_SUPPORTED 1109 # endif 1110 #endif 1111 #ifndef PNG_NO_WRITE_oFFs 1112 # define PNG_WRITE_oFFs_SUPPORTED 1113 # ifndef PNG_oFFs_SUPPORTED 1114 # define PNG_oFFs_SUPPORTED 1115 # endif 1116 #endif 1117 #ifndef PNG_NO_WRITE_pCAL 1118 # define PNG_WRITE_pCAL_SUPPORTED 1119 # ifndef PNG_pCAL_SUPPORTED 1120 # define PNG_pCAL_SUPPORTED 1121 # endif 1122 #endif 1123 #ifndef PNG_NO_WRITE_sCAL 1124 # define PNG_WRITE_sCAL_SUPPORTED 1125 # ifndef PNG_sCAL_SUPPORTED 1126 # define PNG_sCAL_SUPPORTED 1127 # endif 1128 #endif 1129 #ifndef PNG_NO_WRITE_pHYs 1130 # define PNG_WRITE_pHYs_SUPPORTED 1131 # ifndef PNG_pHYs_SUPPORTED 1132 # define PNG_pHYs_SUPPORTED 1133 # endif 1134 #endif 1135 #ifndef PNG_NO_WRITE_sBIT 1136 # define PNG_WRITE_sBIT_SUPPORTED 1137 # ifndef PNG_sBIT_SUPPORTED 1138 # define PNG_sBIT_SUPPORTED 1139 # endif 1140 #endif 1141 #ifndef PNG_NO_WRITE_sPLT 1142 # define PNG_WRITE_sPLT_SUPPORTED 1143 # ifndef PNG_sPLT_SUPPORTED 1144 # define PNG_sPLT_SUPPORTED 1145 # endif 1146 #endif 1147 #ifndef PNG_NO_WRITE_sRGB 1148 # define PNG_WRITE_sRGB_SUPPORTED 1149 # ifndef PNG_sRGB_SUPPORTED 1150 # define PNG_sRGB_SUPPORTED 1151 # endif 1152 #endif 1153 #ifndef PNG_NO_WRITE_tEXt 1154 # define PNG_WRITE_tEXt_SUPPORTED 1155 # ifndef PNG_tEXt_SUPPORTED 1156 # define PNG_tEXt_SUPPORTED 1157 # endif 1158 #endif 1159 #ifndef PNG_NO_WRITE_tIME 1160 # define PNG_WRITE_tIME_SUPPORTED 1161 # ifndef PNG_tIME_SUPPORTED 1162 # define PNG_tIME_SUPPORTED 1163 # endif 1164 #endif 1165 #ifndef PNG_NO_WRITE_tRNS 1166 # define PNG_WRITE_tRNS_SUPPORTED 1167 # ifndef PNG_tRNS_SUPPORTED 1168 # define PNG_tRNS_SUPPORTED 1169 # endif 1170 #endif 1171 #ifndef PNG_NO_WRITE_zTXt 1172 # define PNG_WRITE_zTXt_SUPPORTED 1173 # ifndef PNG_zTXt_SUPPORTED 1174 # define PNG_zTXt_SUPPORTED 1175 # endif 1176 #endif 1177 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ 1178 defined(PNG_WRITE_zTXt_SUPPORTED) 1179 # define PNG_WRITE_TEXT_SUPPORTED 1180 # ifndef PNG_TEXT_SUPPORTED 1181 # define PNG_TEXT_SUPPORTED 1182 # endif 1183 #endif 1184 1185 #ifdef PNG_WRITE_tIME_SUPPORTED 1186 # ifndef PNG_NO_CONVERT_tIME 1187 # ifndef _WIN32_WCE 1188 /* The "tm" structure is not supported on WindowsCE */ 1189 # ifndef PNG_CONVERT_tIME_SUPPORTED 1190 # define PNG_CONVERT_tIME_SUPPORTED 1191 # endif 1192 # endif 1193 # endif 1194 #endif 1195 1196 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ 1197 1198 #if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED) 1199 # define PNG_WRITE_FILTER_SUPPORTED 1200 #endif 1201 1202 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS 1203 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1204 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1205 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 1206 # endif 1207 #endif 1208 1209 #ifndef PNG_NO_HANDLE_AS_UNKNOWN 1210 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1211 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1212 # endif 1213 #endif 1214 #endif /* PNG_WRITE_SUPPORTED */ 1215 1216 /* Turn this off to disable png_read_png() and 1217 * png_write_png() and leave the row_pointers member 1218 * out of the info structure. 1219 */ 1220 #ifndef PNG_NO_INFO_IMAGE 1221 # define PNG_INFO_IMAGE_SUPPORTED 1222 #endif 1223 1224 /* Need the time information for converting tIME chunks */ 1225 #ifdef PNG_CONVERT_tIME_SUPPORTED 1226 /* "time.h" functions are not supported on WindowsCE */ 1227 # include <time.h> 1228 #endif 1229 1230 /* Some typedefs to get us started. These should be safe on most of the 1231 * common platforms. The typedefs should be at least as large as the 1232 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they 1233 * don't have to be exactly that size. Some compilers dislike passing 1234 * unsigned shorts as function parameters, so you may be better off using 1235 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may 1236 * want to have unsigned int for png_uint_32 instead of unsigned long. 1237 */ 1238 1239 typedef unsigned long png_uint_32; 1240 typedef long png_int_32; 1241 typedef unsigned short png_uint_16; 1242 typedef short png_int_16; 1243 typedef unsigned char png_byte; 1244 1245 /* This is usually size_t. It is typedef'ed just in case you need it to 1246 change (I'm not sure if you will or not, so I thought I'd be safe) */ 1247 #ifdef PNG_SIZE_T 1248 typedef PNG_SIZE_T png_size_t; 1249 # define png_sizeof(x) png_convert_size(sizeof(x)) 1250 #else 1251 typedef size_t png_size_t; 1252 # define png_sizeof(x) sizeof(x) 1253 #endif 1254 1255 /* The following is needed for medium model support. It cannot be in the 1256 * PNG_INTERNAL section. Needs modification for other compilers besides 1257 * MSC. Model independent support declares all arrays and pointers to be 1258 * large using the far keyword. The zlib version used must also support 1259 * model independent data. As of version zlib 1.0.4, the necessary changes 1260 * have been made in zlib. The USE_FAR_KEYWORD define triggers other 1261 * changes that are needed. (Tim Wegner) 1262 */ 1263 1264 /* Separate compiler dependencies (problem here is that zlib.h always 1265 defines FAR. (SJT) */ 1266 #ifdef __BORLANDC__ 1267 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) 1268 # define LDATA 1 1269 # else 1270 # define LDATA 0 1271 # endif 1272 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ 1273 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) 1274 # define PNG_MAX_MALLOC_64K 1275 # if (LDATA != 1) 1276 # ifndef FAR 1277 # define FAR __far 1278 # endif 1279 # define USE_FAR_KEYWORD 1280 # endif /* LDATA != 1 */ 1281 /* Possibly useful for moving data out of default segment. 1282 * Uncomment it if you want. Could also define FARDATA as 1283 * const if your compiler supports it. (SJT) 1284 # define FARDATA FAR 1285 */ 1286 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */ 1287 #endif /* __BORLANDC__ */ 1288 1289 1290 /* Suggest testing for specific compiler first before testing for 1291 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, 1292 * making reliance oncertain keywords suspect. (SJT) 1293 */ 1294 1295 /* MSC Medium model */ 1296 #ifdef FAR 1297 # ifdef M_I86MM 1298 # define USE_FAR_KEYWORD 1299 # define FARDATA FAR 1300 # include <dos.h> 1301 # endif 1302 #endif 1303 1304 /* SJT: default case */ 1305 #ifndef FAR 1306 # define FAR 1307 #endif 1308 1309 /* At this point FAR is always defined */ 1310 #ifndef FARDATA 1311 # define FARDATA 1312 #endif 1313 1314 /* Typedef for floating-point numbers that are converted 1315 to fixed-point with a multiple of 100,000, e.g., int_gamma */ 1316 typedef png_int_32 png_fixed_point; 1317 1318 /* Add typedefs for pointers */ 1319 typedef void FAR * png_voidp; 1320 typedef png_byte FAR * png_bytep; 1321 typedef png_uint_32 FAR * png_uint_32p; 1322 typedef png_int_32 FAR * png_int_32p; 1323 typedef png_uint_16 FAR * png_uint_16p; 1324 typedef png_int_16 FAR * png_int_16p; 1325 typedef PNG_CONST char FAR * png_const_charp; 1326 typedef char FAR * png_charp; 1327 typedef png_fixed_point FAR * png_fixed_point_p; 1328 1329 #ifndef PNG_NO_STDIO 1330 #ifdef _WIN32_WCE 1331 typedef HANDLE png_FILE_p; 1332 #else 1333 typedef FILE * png_FILE_p; 1334 #endif 1335 #endif 1336 1337 #ifdef PNG_FLOATING_POINT_SUPPORTED 1338 typedef double FAR * png_doublep; 1339 #endif 1340 1341 /* Pointers to pointers; i.e. arrays */ 1342 typedef png_byte FAR * FAR * png_bytepp; 1343 typedef png_uint_32 FAR * FAR * png_uint_32pp; 1344 typedef png_int_32 FAR * FAR * png_int_32pp; 1345 typedef png_uint_16 FAR * FAR * png_uint_16pp; 1346 typedef png_int_16 FAR * FAR * png_int_16pp; 1347 typedef PNG_CONST char FAR * FAR * png_const_charpp; 1348 typedef char FAR * FAR * png_charpp; 1349 typedef png_fixed_point FAR * FAR * png_fixed_point_pp; 1350 #ifdef PNG_FLOATING_POINT_SUPPORTED 1351 typedef double FAR * FAR * png_doublepp; 1352 #endif 1353 1354 /* Pointers to pointers to pointers; i.e., pointer to array */ 1355 typedef char FAR * FAR * FAR * png_charppp; 1356 1357 #if defined(PNG_1_0_X) || defined(PNG_1_2_X) 1358 /* SPC - Is this stuff deprecated? */ 1359 /* It'll be removed as of libpng-1.4.0 - GR-P */ 1360 /* libpng typedefs for types in zlib. If zlib changes 1361 * or another compression library is used, then change these. 1362 * Eliminates need to change all the source files. 1363 */ 1364 typedef charf * png_zcharp; 1365 typedef charf * FAR * png_zcharpp; 1366 typedef z_stream FAR * png_zstreamp; 1367 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */ 1368 1369 /* 1370 * Define PNG_BUILD_DLL if the module being built is a Windows 1371 * LIBPNG DLL. 1372 * 1373 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. 1374 * It is equivalent to Microsoft predefined macro _DLL that is 1375 * automatically defined when you compile using the share 1376 * version of the CRT (C Run-Time library) 1377 * 1378 * The cygwin mods make this behavior a little different: 1379 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin 1380 * Define PNG_STATIC if you are building a static library for use with cygwin, 1381 * -or- if you are building an application that you want to link to the 1382 * static library. 1383 * PNG_USE_DLL is defined by default (no user action needed) unless one of 1384 * the other flags is defined. 1385 */ 1386 1387 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) 1388 # define PNG_DLL 1389 #endif 1390 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. 1391 * When building a static lib, default to no GLOBAL ARRAYS, but allow 1392 * command-line override 1393 */ 1394 #ifdef __CYGWIN__ 1395 # ifndef PNG_STATIC 1396 # ifdef PNG_USE_GLOBAL_ARRAYS 1397 # undef PNG_USE_GLOBAL_ARRAYS 1398 # endif 1399 # ifndef PNG_USE_LOCAL_ARRAYS 1400 # define PNG_USE_LOCAL_ARRAYS 1401 # endif 1402 # else 1403 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) 1404 # ifdef PNG_USE_GLOBAL_ARRAYS 1405 # undef PNG_USE_GLOBAL_ARRAYS 1406 # endif 1407 # endif 1408 # endif 1409 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1410 # define PNG_USE_LOCAL_ARRAYS 1411 # endif 1412 #endif 1413 1414 /* Do not use global arrays (helps with building DLL's) 1415 * They are no longer used in libpng itself, since version 1.0.5c, 1416 * but might be required for some pre-1.0.5c applications. 1417 */ 1418 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1419 # if defined(PNG_NO_GLOBAL_ARRAYS) || \ 1420 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER) 1421 # define PNG_USE_LOCAL_ARRAYS 1422 # else 1423 # define PNG_USE_GLOBAL_ARRAYS 1424 # endif 1425 #endif 1426 1427 #ifdef __CYGWIN__ 1428 # undef PNGAPI 1429 # define PNGAPI __cdecl 1430 # undef PNG_IMPEXP 1431 # define PNG_IMPEXP 1432 #endif 1433 1434 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", 1435 * you may get warnings regarding the linkage of png_zalloc and png_zfree. 1436 * Don't ignore those warnings; you must also reset the default calling 1437 * convention in your compiler to match your PNGAPI, and you must build 1438 * zlib and your applications the same way you build libpng. 1439 */ 1440 1441 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF) 1442 # ifndef PNG_NO_MODULEDEF 1443 # define PNG_NO_MODULEDEF 1444 # endif 1445 #endif 1446 1447 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) 1448 # define PNG_IMPEXP 1449 #endif 1450 1451 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ 1452 (( defined(_Windows) || defined(_WINDOWS) || \ 1453 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) 1454 1455 # ifndef PNGAPI 1456 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) 1457 # define PNGAPI __cdecl 1458 # else 1459 # define PNGAPI _cdecl 1460 # endif 1461 # endif 1462 1463 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ 1464 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) 1465 # define PNG_IMPEXP 1466 # endif 1467 1468 # ifndef PNG_IMPEXP 1469 1470 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol 1471 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol 1472 1473 /* Borland/Microsoft */ 1474 # if defined(_MSC_VER) || defined(__BORLANDC__) 1475 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) 1476 # define PNG_EXPORT PNG_EXPORT_TYPE1 1477 # else 1478 # define PNG_EXPORT PNG_EXPORT_TYPE2 1479 # ifdef PNG_BUILD_DLL 1480 # define PNG_IMPEXP __export 1481 # else 1482 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in 1483 VC++ */ 1484 # endif /* Exists in Borland C++ for 1485 C++ classes (== huge) */ 1486 # endif 1487 # endif 1488 1489 # ifndef PNG_IMPEXP 1490 # ifdef PNG_BUILD_DLL 1491 # define PNG_IMPEXP __declspec(dllexport) 1492 # else 1493 # define PNG_IMPEXP __declspec(dllimport) 1494 # endif 1495 # endif 1496 # endif /* PNG_IMPEXP */ 1497 #else /* !(DLL || non-cygwin WINDOWS) */ 1498 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 1499 # ifndef PNGAPI 1500 # define PNGAPI _System 1501 # endif 1502 # else 1503 # if 0 /* ... other platforms, with other meanings */ 1504 # endif 1505 # endif 1506 #endif 1507 1508 #ifndef PNGAPI 1509 # define PNGAPI 1510 #endif 1511 #ifndef PNG_IMPEXP 1512 # if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) 1513 # define PNG_IMPEXP __attribute__((visibility ("default"))) 1514 # else 1515 # define PNG_IMPEXP 1516 # endif 1517 #endif 1518 1519 #ifdef PNG_BUILDSYMS 1520 # ifndef PNG_EXPORT 1521 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END 1522 # endif 1523 # ifdef PNG_USE_GLOBAL_ARRAYS 1524 # ifndef PNG_EXPORT_VAR 1525 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT 1526 # endif 1527 # endif 1528 #endif 1529 1530 #ifndef PNG_EXPORT 1531 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol 1532 #endif 1533 1534 #ifdef PNG_USE_GLOBAL_ARRAYS 1535 # ifndef PNG_EXPORT_VAR 1536 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type 1537 # endif 1538 #endif 1539 1540 #ifdef PNG_PEDANTIC_WARNINGS 1541 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED 1542 # define PNG_PEDANTIC_WARNINGS_SUPPORTED 1543 # endif 1544 #endif 1545 1546 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED 1547 /* Support for compiler specific function attributes. These are used 1548 * so that where compiler support is available incorrect use of API 1549 * functions in png.h will generate compiler warnings. Added at libpng 1550 * version 1.2.41. 1551 */ 1552 # ifdef __GNUC__ 1553 # ifndef PNG_USE_RESULT 1554 # define PNG_USE_RESULT __attribute__((__warn_unused_result__)) 1555 # endif 1556 # ifndef PNG_NORETURN 1557 # define PNG_NORETURN __attribute__((__noreturn__)) 1558 # endif 1559 # ifndef PNG_ALLOCATED 1560 # define PNG_ALLOCATED __attribute__((__malloc__)) 1561 # endif 1562 1563 /* This specifically protects structure members that should only be 1564 * accessed from within the library, therefore should be empty during 1565 * a library build. 1566 */ 1567 # ifndef PNG_DEPRECATED 1568 # define PNG_DEPRECATED __attribute__((__deprecated__)) 1569 # endif 1570 # ifndef PNG_DEPSTRUCT 1571 # define PNG_DEPSTRUCT __attribute__((__deprecated__)) 1572 # endif 1573 # ifndef PNG_PRIVATE 1574 # if 0 /* Doesn't work so we use deprecated instead*/ 1575 # define PNG_PRIVATE \ 1576 __attribute__((warning("This function is not exported by libpng."))) 1577 # else 1578 # define PNG_PRIVATE \ 1579 __attribute__((__deprecated__)) 1580 # endif 1581 # endif /* PNG_PRIVATE */ 1582 # endif /* __GNUC__ */ 1583 #endif /* PNG_PEDANTIC_WARNINGS */ 1584 1585 #ifndef PNG_DEPRECATED 1586 # define PNG_DEPRECATED /* Use of this function is deprecated */ 1587 #endif 1588 #ifndef PNG_USE_RESULT 1589 # define PNG_USE_RESULT /* The result of this function must be checked */ 1590 #endif 1591 #ifndef PNG_NORETURN 1592 # define PNG_NORETURN /* This function does not return */ 1593 #endif 1594 #ifndef PNG_ALLOCATED 1595 # define PNG_ALLOCATED /* The result of the function is new memory */ 1596 #endif 1597 #ifndef PNG_DEPSTRUCT 1598 # define PNG_DEPSTRUCT /* Access to this struct member is deprecated */ 1599 #endif 1600 #ifndef PNG_PRIVATE 1601 # define PNG_PRIVATE /* This is a private libpng function */ 1602 #endif 1603 1604 /* User may want to use these so they are not in PNG_INTERNAL. Any library 1605 * functions that are passed far data must be model independent. 1606 */ 1607 1608 #ifndef PNG_ABORT 1609 # define PNG_ABORT() abort() 1610 #endif 1611 1612 #ifdef PNG_SETJMP_SUPPORTED 1613 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) 1614 #else 1615 # define png_jmpbuf(png_ptr) \ 1616 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) 1617 #endif 1618 1619 #ifdef USE_FAR_KEYWORD /* memory model independent fns */ 1620 /* Use this to make far-to-near assignments */ 1621 # define CHECK 1 1622 # define NOCHECK 0 1623 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) 1624 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) 1625 # define png_snprintf _fsnprintf /* Added to v 1.2.19 */ 1626 # define png_strlen _fstrlen 1627 # define png_memcmp _fmemcmp /* SJT: added */ 1628 # define png_memcpy _fmemcpy 1629 # define png_memset _fmemset 1630 #else /* Use the usual functions */ 1631 # define CVT_PTR(ptr) (ptr) 1632 # define CVT_PTR_NOCHECK(ptr) (ptr) 1633 # ifndef PNG_NO_SNPRINTF 1634 # ifdef _MSC_VER 1635 # define png_snprintf _snprintf /* Added to v 1.2.19 */ 1636 # define png_snprintf2 _snprintf 1637 # define png_snprintf6 _snprintf 1638 # else 1639 # define png_snprintf snprintf /* Added to v 1.2.19 */ 1640 # define png_snprintf2 snprintf 1641 # define png_snprintf6 snprintf 1642 # endif 1643 # else 1644 /* You don't have or don't want to use snprintf(). Caution: Using 1645 * sprintf instead of snprintf exposes your application to accidental 1646 * or malevolent buffer overflows. If you don't have snprintf() 1647 * as a general rule you should provide one (you can get one from 1648 * Portable OpenSSH). 1649 */ 1650 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1) 1651 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2) 1652 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \ 1653 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6) 1654 # endif 1655 # define png_strlen strlen 1656 # define png_memcmp memcmp /* SJT: added */ 1657 # define png_memcpy memcpy 1658 # define png_memset memset 1659 #endif 1660 /* End of memory model independent support */ 1661 1662 /* Just a little check that someone hasn't tried to define something 1663 * contradictory. 1664 */ 1665 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) 1666 # undef PNG_ZBUF_SIZE 1667 # define PNG_ZBUF_SIZE 65536L 1668 #endif 1669 1670 /* Added at libpng-1.2.8 */ 1671 #endif /* PNG_VERSION_INFO_ONLY */ 1672 1673 #endif /* PNGCONF_H */ 1674