1 /* $MirOS: src/lib/libpng/pngconf.h,v 1.12 2013/10/31 20:06:37 tg Exp $ */ 2 3 /* pngconf.h - machine configurable file for libpng 4 * 5 * libpng version 1.2.50 - July 10, 2012 6 * Copyright © 2013 7 * Thorsten “mirabilos” Glaser <tg@mirbsd.org> 8 * Copyright (c) 1998-2012 Glenn Randers-Pehrson 9 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) 10 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) 11 * 12 * This code is released under the libpng license. 13 * For conditions of distribution and use, see the disclaimer 14 * and license in png.h 15 */ 16 17 /* Any machine specific code is near the front of this file, so if you 18 * are configuring libpng for a machine, you may want to read the section 19 * starting here down to where it starts to typedef png_color, png_text, 20 * and png_info. 21 */ 22 23 #ifndef PNGCONF_H 24 #define PNGCONF_H 25 26 #define PNG_1_2_X 27 28 /* 29 * PNG_USER_CONFIG has to be defined on the compiler command line. This 30 * includes the resource compiler for Windows DLL configurations. 31 */ 32 #ifdef PNG_USER_CONFIG 33 # ifndef PNG_USER_PRIVATEBUILD 34 # define PNG_USER_PRIVATEBUILD 35 # endif 36 #include "pngusr.h" 37 #endif 38 39 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */ 40 #ifdef PNG_CONFIGURE_LIBPNG 41 #ifdef HAVE_CONFIG_H 42 #include "config.h" 43 #endif 44 #endif 45 46 /* 47 * Added at libpng-1.2.8 48 * 49 * If you create a private DLL you need to define in "pngusr.h" the followings: 50 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of 51 * the DLL was built> 52 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons." 53 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to 54 * distinguish your DLL from those of the official release. These 55 * correspond to the trailing letters that come after the version 56 * number and must match your private DLL name> 57 * e.g. // private DLL "libpng13gx.dll" 58 * #define PNG_USER_DLLFNAME_POSTFIX "gx" 59 * 60 * The following macros are also at your disposal if you want to complete the 61 * DLL VERSIONINFO structure. 62 * - PNG_USER_VERSIONINFO_COMMENTS 63 * - PNG_USER_VERSIONINFO_COMPANYNAME 64 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS 65 */ 66 67 #ifdef __STDC__ 68 #ifdef SPECIALBUILD 69 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\ 70 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.") 71 #endif 72 73 #ifdef PRIVATEBUILD 74 # pragma message("PRIVATEBUILD is deprecated.\ 75 Use PNG_USER_PRIVATEBUILD instead.") 76 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD 77 #endif 78 #endif /* __STDC__ */ 79 80 #ifndef PNG_VERSION_INFO_ONLY 81 82 /* End of material added to libpng-1.2.8 */ 83 84 /* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble 85 Restored at libpng-1.2.21 */ 86 #if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \ 87 !defined(PNG_WARN_UNINITIALIZED_ROW) 88 # define PNG_WARN_UNINITIALIZED_ROW 1 89 #endif 90 /* End of material added at libpng-1.2.19/1.2.21 */ 91 92 /* This is the size of the compression buffer, and thus the size of 93 * an IDAT chunk. Make this whatever size you feel is best for your 94 * machine. One of these will be allocated per png_struct. When this 95 * is full, it writes the data to the disk, and does some other 96 * calculations. Making this an extremely small size will slow 97 * the library down, but you may want to experiment to determine 98 * where it becomes significant, if you are concerned with memory 99 * usage. Note that zlib allocates at least 32Kb also. For readers, 100 * this describes the size of the buffer available to read the data in. 101 * Unless this gets smaller than the size of a row (compressed), 102 * it should not make much difference how big this is. 103 */ 104 105 #ifndef PNG_ZBUF_SIZE 106 # define PNG_ZBUF_SIZE 32768L 107 #endif 108 109 /* Enable if you want a write-only libpng */ 110 111 #ifndef PNG_NO_READ_SUPPORTED 112 # define PNG_READ_SUPPORTED 113 #endif 114 115 /* Enable if you want a read-only libpng */ 116 117 #ifndef PNG_NO_WRITE_SUPPORTED 118 # define PNG_WRITE_SUPPORTED 119 #endif 120 121 /* Enabled in 1.2.41. */ 122 #ifdef PNG_ALLOW_BENIGN_ERRORS 123 # define png_benign_error png_warning 124 # define png_chunk_benign_error png_chunk_warning 125 #else 126 # ifndef PNG_BENIGN_ERRORS_SUPPORTED 127 # define png_benign_error png_error 128 # define png_chunk_benign_error png_chunk_error 129 # endif 130 #endif 131 132 /* Added in libpng-1.2.41 */ 133 #if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED) 134 # define PNG_WARNINGS_SUPPORTED 135 #endif 136 137 #if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED) 138 # define PNG_ERROR_TEXT_SUPPORTED 139 #endif 140 141 #if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED) 142 # define PNG_CHECK_cHRM_SUPPORTED 143 #endif 144 145 /* Enabled by default in 1.2.0. You can disable this if you don't need to 146 * support PNGs that are embedded in MNG datastreams 147 */ 148 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES) 149 # ifndef PNG_MNG_FEATURES_SUPPORTED 150 # define PNG_MNG_FEATURES_SUPPORTED 151 # endif 152 #endif 153 154 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED 155 # ifndef PNG_FLOATING_POINT_SUPPORTED 156 # define PNG_FLOATING_POINT_SUPPORTED 157 # endif 158 #endif 159 160 /* If you are running on a machine where you cannot allocate more 161 * than 64K of memory at once, uncomment this. While libpng will not 162 * normally need that much memory in a chunk (unless you load up a very 163 * large file), zlib needs to know how big of a chunk it can use, and 164 * libpng thus makes sure to check any memory allocation to verify it 165 * will fit into memory. 166 #define PNG_MAX_MALLOC_64K 167 */ 168 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) 169 # define PNG_MAX_MALLOC_64K 170 #endif 171 172 /* Special munging to support doing things the 'cygwin' way: 173 * 'Normal' png-on-win32 defines/defaults: 174 * PNG_BUILD_DLL -- building dll 175 * PNG_USE_DLL -- building an application, linking to dll 176 * (no define) -- building static library, or building an 177 * application and linking to the static lib 178 * 'Cygwin' defines/defaults: 179 * PNG_BUILD_DLL -- (ignored) building the dll 180 * (no define) -- (ignored) building an application, linking to the dll 181 * PNG_STATIC -- (ignored) building the static lib, or building an 182 * application that links to the static lib. 183 * ALL_STATIC -- (ignored) building various static libs, or building an 184 * application that links to the static libs. 185 * Thus, 186 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and 187 * this bit of #ifdefs will define the 'correct' config variables based on 188 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but 189 * unnecessary. 190 * 191 * Also, the precedence order is: 192 * ALL_STATIC (since we can't #undef something outside our namespace) 193 * PNG_BUILD_DLL 194 * PNG_STATIC 195 * (nothing) == PNG_USE_DLL 196 * 197 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent 198 * of auto-import in binutils, we no longer need to worry about 199 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, 200 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes 201 * to __declspec() stuff. However, we DO need to worry about 202 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults 203 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. 204 */ 205 #ifdef __CYGWIN__ 206 # ifdef ALL_STATIC 207 # ifdef PNG_BUILD_DLL 208 # undef PNG_BUILD_DLL 209 # endif 210 # ifdef PNG_USE_DLL 211 # undef PNG_USE_DLL 212 # endif 213 # ifdef PNG_DLL 214 # undef PNG_DLL 215 # endif 216 # ifndef PNG_STATIC 217 # define PNG_STATIC 218 # endif 219 # else 220 # ifdef PNG_BUILD_DLL 221 # ifdef PNG_STATIC 222 # undef PNG_STATIC 223 # endif 224 # ifdef PNG_USE_DLL 225 # undef PNG_USE_DLL 226 # endif 227 # ifndef PNG_DLL 228 # define PNG_DLL 229 # endif 230 # else 231 # ifdef PNG_STATIC 232 # ifdef PNG_USE_DLL 233 # undef PNG_USE_DLL 234 # endif 235 # ifdef PNG_DLL 236 # undef PNG_DLL 237 # endif 238 # else 239 # ifndef PNG_USE_DLL 240 # define PNG_USE_DLL 241 # endif 242 # ifndef PNG_DLL 243 # define PNG_DLL 244 # endif 245 # endif 246 # endif 247 # endif 248 #endif 249 250 /* This protects us against compilers that run on a windowing system 251 * and thus don't have or would rather us not use the stdio types: 252 * stdin, stdout, and stderr. The only one currently used is stderr 253 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will 254 * prevent these from being compiled and used. #defining PNG_NO_STDIO 255 * will also prevent these, plus will prevent the entire set of stdio 256 * macros and functions (FILE *, printf, etc.) from being compiled and used, 257 * unless (PNG_DEBUG > 0) has been #defined. 258 * 259 * #define PNG_NO_CONSOLE_IO 260 * #define PNG_NO_STDIO 261 */ 262 263 #if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED) 264 # define PNG_STDIO_SUPPORTED 265 #endif 266 267 #ifdef _WIN32_WCE 268 # include <windows.h> 269 /* Console I/O functions are not supported on WindowsCE */ 270 # define PNG_NO_CONSOLE_IO 271 /* abort() may not be supported on some/all Windows CE platforms */ 272 # define PNG_ABORT() exit(-1) 273 # ifdef PNG_DEBUG 274 # undef PNG_DEBUG 275 # endif 276 #endif 277 278 #ifdef PNG_BUILD_DLL 279 # ifndef PNG_CONSOLE_IO_SUPPORTED 280 # ifndef PNG_NO_CONSOLE_IO 281 # define PNG_NO_CONSOLE_IO 282 # endif 283 # endif 284 #endif 285 286 # ifdef PNG_NO_STDIO 287 # ifndef PNG_NO_CONSOLE_IO 288 # define PNG_NO_CONSOLE_IO 289 # endif 290 # ifdef PNG_DEBUG 291 # if (PNG_DEBUG > 0) 292 # include <stdio.h> 293 # endif 294 # endif 295 # else 296 # ifndef _WIN32_WCE 297 /* "stdio.h" functions are not supported on WindowsCE */ 298 # include <stdio.h> 299 # endif 300 # endif 301 302 #if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED) 303 # define PNG_CONSOLE_IO_SUPPORTED 304 #endif 305 306 #ifndef PNGARG 307 # define PNGARG(arglist) arglist 308 #endif /* PNGARG */ 309 310 /* Try to determine if we are compiling on a Mac. Note that testing for 311 * just __MWERKS__ is not good enough, because the Codewarrior is now used 312 * on non-Mac platforms. 313 */ 314 #ifndef MACOS 315 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ 316 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) 317 # define MACOS 318 # endif 319 #endif 320 321 /* enough people need this for various reasons to include it here */ 322 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) 323 # include <sys/types.h> 324 #endif 325 326 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) 327 # define PNG_SETJMP_SUPPORTED 328 #endif 329 330 #ifdef PNG_SETJMP_SUPPORTED 331 /* This is an attempt to force a single setjmp behaviour on Linux. If 332 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. 333 * 334 * You can bypass this test if you know that your application uses exactly 335 * the same setjmp.h that was included when libpng was built. Only define 336 * PNG_SKIP_SETJMP_CHECK while building your application, prior to the 337 * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK 338 * while building a separate libpng library for general use. 339 */ 340 341 # ifndef PNG_SKIP_SETJMP_CHECK 342 # ifdef __linux__ 343 # ifdef _BSD_SOURCE 344 # define PNG_SAVE_BSD_SOURCE 345 # undef _BSD_SOURCE 346 # endif 347 # ifdef _SETJMP_H 348 /* If you encounter a compiler error here, see the explanation 349 * near the end of INSTALL. 350 */ 351 __pngconf.h__ in libpng already includes setjmp.h; 352 __dont__ include it again.; 353 # endif 354 # endif /* __linux__ */ 355 # endif /* PNG_SKIP_SETJMP_CHECK */ 356 357 /* include setjmp.h for error handling */ 358 # include <setjmp.h> 359 360 # ifdef __linux__ 361 # ifdef PNG_SAVE_BSD_SOURCE 362 # ifndef _BSD_SOURCE 363 # define _BSD_SOURCE 364 # endif 365 # undef PNG_SAVE_BSD_SOURCE 366 # endif 367 # endif /* __linux__ */ 368 #endif /* PNG_SETJMP_SUPPORTED */ 369 370 #ifdef BSD 371 # include <strings.h> 372 #else 373 # include <string.h> 374 #endif 375 376 /* Other defines for things like memory and the like can go here. */ 377 #ifdef PNG_INTERNAL 378 379 #include <stdlib.h> 380 381 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which 382 * aren't usually used outside the library (as far as I know), so it is 383 * debatable if they should be exported at all. In the future, when it is 384 * possible to have run-time registry of chunk-handling functions, some of 385 * these will be made available again. 386 #define PNG_EXTERN extern 387 */ 388 #define PNG_EXTERN 389 390 /* Other defines specific to compilers can go here. Try to keep 391 * them inside an appropriate ifdef/endif pair for portability. 392 */ 393 394 #ifdef PNG_FLOATING_POINT_SUPPORTED 395 # ifdef MACOS 396 /* We need to check that <math.h> hasn't already been included earlier 397 * as it seems it doesn't agree with <fp.h>, yet we should really use 398 * <fp.h> if possible. 399 */ 400 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) 401 # include <fp.h> 402 # endif 403 # else 404 # include <math.h> 405 # endif 406 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) 407 /* Amiga SAS/C: We must include builtin FPU functions when compiling using 408 * MATH=68881 409 */ 410 # include <m68881.h> 411 # endif 412 #endif 413 414 /* Codewarrior on NT has linking problems without this. */ 415 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) 416 # define PNG_ALWAYS_EXTERN 417 #endif 418 419 /* This provides the non-ANSI (far) memory allocation routines. */ 420 #if defined(__TURBOC__) && defined(__MSDOS__) 421 # include <mem.h> 422 # include <alloc.h> 423 #endif 424 425 /* I have no idea why is this necessary... */ 426 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ 427 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) 428 # include <malloc.h> 429 #endif 430 431 /* This controls how fine the dithering gets. As this allocates 432 * a largish chunk of memory (32K), those who are not as concerned 433 * with dithering quality can decrease some or all of these. 434 */ 435 #ifndef PNG_DITHER_RED_BITS 436 # define PNG_DITHER_RED_BITS 5 437 #endif 438 #ifndef PNG_DITHER_GREEN_BITS 439 # define PNG_DITHER_GREEN_BITS 5 440 #endif 441 #ifndef PNG_DITHER_BLUE_BITS 442 # define PNG_DITHER_BLUE_BITS 5 443 #endif 444 445 /* This controls how fine the gamma correction becomes when you 446 * are only interested in 8 bits anyway. Increasing this value 447 * results in more memory being used, and more pow() functions 448 * being called to fill in the gamma tables. Don't set this value 449 * less then 8, and even that may not work (I haven't tested it). 450 */ 451 452 #ifndef PNG_MAX_GAMMA_8 453 # define PNG_MAX_GAMMA_8 11 454 #endif 455 456 /* This controls how much a difference in gamma we can tolerate before 457 * we actually start doing gamma conversion. 458 */ 459 #ifndef PNG_GAMMA_THRESHOLD 460 # define PNG_GAMMA_THRESHOLD 0.05 461 #endif 462 463 #endif /* PNG_INTERNAL */ 464 465 # define PNG_CONST const 466 467 /* The following defines give you the ability to remove code from the 468 * library that you will not be using. I wish I could figure out how to 469 * automate this, but I can't do that without making it seriously hard 470 * on the users. So if you are not using an ability, change the #define 471 * to and #undef, and that part of the library will not be compiled. If 472 * your linker can't find a function, you may want to make sure the 473 * ability is defined here. Some of these depend upon some others being 474 * defined. I haven't figured out all the interactions here, so you may 475 * have to experiment awhile to get everything to compile. If you are 476 * creating or using a shared library, you probably shouldn't touch this, 477 * as it will affect the size of the structures, and this will cause bad 478 * things to happen if the library and/or application ever change. 479 */ 480 481 /* Any features you will not be using can be undef'ed here */ 482 483 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user 484 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS 485 * on the compile line, then pick and choose which ones to define without 486 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED 487 * if you only want to have a png-compliant reader/writer but don't need 488 * any of the extra transformations. This saves about 80 kbytes in a 489 * typical installation of the library. (PNG_NO_* form added in version 490 * 1.0.1c, for consistency) 491 */ 492 493 /* The size of the png_text structure changed in libpng-1.0.6 when 494 * iTXt support was added. iTXt support was turned off by default through 495 * libpng-1.2.x, to support old apps that malloc the png_text structure 496 * instead of calling png_set_text() and letting libpng malloc it. It 497 * will be turned on by default in libpng-1.4.0. 498 */ 499 500 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 501 # ifndef PNG_NO_iTXt_SUPPORTED 502 # define PNG_NO_iTXt_SUPPORTED 503 # endif 504 # ifndef PNG_NO_READ_iTXt 505 # define PNG_NO_READ_iTXt 506 # endif 507 # ifndef PNG_NO_WRITE_iTXt 508 # define PNG_NO_WRITE_iTXt 509 # endif 510 #endif 511 512 #if !defined(PNG_NO_iTXt_SUPPORTED) 513 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) 514 # define PNG_READ_iTXt 515 # endif 516 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) 517 # define PNG_WRITE_iTXt 518 # endif 519 #endif 520 521 /* The following support, added after version 1.0.0, can be turned off here en 522 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility 523 * with old applications that require the length of png_struct and png_info 524 * to remain unchanged. 525 */ 526 527 #ifdef PNG_LEGACY_SUPPORTED 528 # define PNG_NO_FREE_ME 529 # define PNG_NO_READ_UNKNOWN_CHUNKS 530 # define PNG_NO_WRITE_UNKNOWN_CHUNKS 531 # define PNG_NO_HANDLE_AS_UNKNOWN 532 # define PNG_NO_READ_USER_CHUNKS 533 # define PNG_NO_READ_iCCP 534 # define PNG_NO_WRITE_iCCP 535 # define PNG_NO_READ_iTXt 536 # define PNG_NO_WRITE_iTXt 537 # define PNG_NO_READ_sCAL 538 # define PNG_NO_WRITE_sCAL 539 # define PNG_NO_READ_sPLT 540 # define PNG_NO_WRITE_sPLT 541 # define PNG_NO_INFO_IMAGE 542 # define PNG_NO_READ_RGB_TO_GRAY 543 # define PNG_NO_READ_USER_TRANSFORM 544 # define PNG_NO_WRITE_USER_TRANSFORM 545 # define PNG_NO_USER_MEM 546 # define PNG_NO_READ_EMPTY_PLTE 547 # define PNG_NO_MNG_FEATURES 548 # define PNG_NO_FIXED_POINT_SUPPORTED 549 #endif 550 551 /* Ignore attempt to turn off both floating and fixed point support */ 552 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ 553 !defined(PNG_NO_FIXED_POINT_SUPPORTED) 554 # define PNG_FIXED_POINT_SUPPORTED 555 #endif 556 557 #ifndef PNG_NO_FREE_ME 558 # define PNG_FREE_ME_SUPPORTED 559 #endif 560 561 #ifdef PNG_READ_SUPPORTED 562 563 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ 564 !defined(PNG_NO_READ_TRANSFORMS) 565 # define PNG_READ_TRANSFORMS_SUPPORTED 566 #endif 567 568 #ifdef PNG_READ_TRANSFORMS_SUPPORTED 569 # ifndef PNG_NO_READ_EXPAND 570 # define PNG_READ_EXPAND_SUPPORTED 571 # endif 572 # ifndef PNG_NO_READ_SHIFT 573 # define PNG_READ_SHIFT_SUPPORTED 574 # endif 575 # ifndef PNG_NO_READ_PACK 576 # define PNG_READ_PACK_SUPPORTED 577 # endif 578 # ifndef PNG_NO_READ_BGR 579 # define PNG_READ_BGR_SUPPORTED 580 # endif 581 # ifndef PNG_NO_READ_SWAP 582 # define PNG_READ_SWAP_SUPPORTED 583 # endif 584 # ifndef PNG_NO_READ_PACKSWAP 585 # define PNG_READ_PACKSWAP_SUPPORTED 586 # endif 587 # ifndef PNG_NO_READ_INVERT 588 # define PNG_READ_INVERT_SUPPORTED 589 # endif 590 # ifndef PNG_NO_READ_DITHER 591 # define PNG_READ_DITHER_SUPPORTED 592 # endif 593 # ifndef PNG_NO_READ_BACKGROUND 594 # define PNG_READ_BACKGROUND_SUPPORTED 595 # endif 596 # ifndef PNG_NO_READ_16_TO_8 597 # define PNG_READ_16_TO_8_SUPPORTED 598 # endif 599 # ifndef PNG_NO_READ_FILLER 600 # define PNG_READ_FILLER_SUPPORTED 601 # endif 602 # ifndef PNG_NO_READ_GAMMA 603 # define PNG_READ_GAMMA_SUPPORTED 604 # endif 605 # ifndef PNG_NO_READ_GRAY_TO_RGB 606 # define PNG_READ_GRAY_TO_RGB_SUPPORTED 607 # endif 608 # ifndef PNG_NO_READ_SWAP_ALPHA 609 # define PNG_READ_SWAP_ALPHA_SUPPORTED 610 # endif 611 # ifndef PNG_NO_READ_INVERT_ALPHA 612 # define PNG_READ_INVERT_ALPHA_SUPPORTED 613 # endif 614 # ifndef PNG_NO_READ_STRIP_ALPHA 615 # define PNG_READ_STRIP_ALPHA_SUPPORTED 616 # endif 617 # ifndef PNG_NO_READ_USER_TRANSFORM 618 # define PNG_READ_USER_TRANSFORM_SUPPORTED 619 # endif 620 # ifndef PNG_NO_READ_RGB_TO_GRAY 621 # define PNG_READ_RGB_TO_GRAY_SUPPORTED 622 # endif 623 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */ 624 625 /* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */ 626 #if !defined(PNG_NO_PROGRESSIVE_READ) && \ 627 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */ 628 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ 629 #endif /* about interlacing capability! You'll */ 630 /* still have interlacing unless you change the following define: */ 631 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */ 632 633 /* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */ 634 #if !defined(PNG_NO_SEQUENTIAL_READ) && \ 635 !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \ 636 !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED) 637 # define PNG_SEQUENTIAL_READ_SUPPORTED 638 #endif 639 640 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */ 641 642 #ifndef PNG_NO_READ_COMPOSITE_NODIV 643 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ 644 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ 645 # endif 646 #endif 647 648 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 649 /* Deprecated, will be removed from version 2.0.0. 650 Use PNG_MNG_FEATURES_SUPPORTED instead. */ 651 #ifndef PNG_NO_READ_EMPTY_PLTE 652 # define PNG_READ_EMPTY_PLTE_SUPPORTED 653 #endif 654 #endif 655 656 #endif /* PNG_READ_SUPPORTED */ 657 658 #ifdef PNG_WRITE_SUPPORTED 659 660 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ 661 !defined(PNG_NO_WRITE_TRANSFORMS) 662 # define PNG_WRITE_TRANSFORMS_SUPPORTED 663 #endif 664 665 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED 666 # ifndef PNG_NO_WRITE_SHIFT 667 # define PNG_WRITE_SHIFT_SUPPORTED 668 # endif 669 # ifndef PNG_NO_WRITE_PACK 670 # define PNG_WRITE_PACK_SUPPORTED 671 # endif 672 # ifndef PNG_NO_WRITE_BGR 673 # define PNG_WRITE_BGR_SUPPORTED 674 # endif 675 # ifndef PNG_NO_WRITE_SWAP 676 # define PNG_WRITE_SWAP_SUPPORTED 677 # endif 678 # ifndef PNG_NO_WRITE_PACKSWAP 679 # define PNG_WRITE_PACKSWAP_SUPPORTED 680 # endif 681 # ifndef PNG_NO_WRITE_INVERT 682 # define PNG_WRITE_INVERT_SUPPORTED 683 # endif 684 # ifndef PNG_NO_WRITE_FILLER 685 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ 686 # endif 687 # ifndef PNG_NO_WRITE_SWAP_ALPHA 688 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED 689 # endif 690 #ifndef PNG_1_0_X 691 # ifndef PNG_NO_WRITE_INVERT_ALPHA 692 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED 693 # endif 694 #endif 695 # ifndef PNG_NO_WRITE_USER_TRANSFORM 696 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED 697 # endif 698 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ 699 700 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \ 701 !defined(PNG_WRITE_INTERLACING_SUPPORTED) 702 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant 703 encoders, but can cause trouble 704 if left undefined */ 705 #endif 706 707 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ 708 !defined(PNG_WRITE_WEIGHTED_FILTER) && \ 709 defined(PNG_FLOATING_POINT_SUPPORTED) 710 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED 711 #endif 712 713 #ifndef PNG_NO_WRITE_FLUSH 714 # define PNG_WRITE_FLUSH_SUPPORTED 715 #endif 716 717 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) 718 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ 719 #ifndef PNG_NO_WRITE_EMPTY_PLTE 720 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED 721 #endif 722 #endif 723 724 #endif /* PNG_WRITE_SUPPORTED */ 725 726 #ifndef PNG_1_0_X 727 # ifndef PNG_NO_ERROR_NUMBERS 728 # define PNG_ERROR_NUMBERS_SUPPORTED 729 # endif 730 #endif /* PNG_1_0_X */ 731 732 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 733 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) 734 # ifndef PNG_NO_USER_TRANSFORM_PTR 735 # define PNG_USER_TRANSFORM_PTR_SUPPORTED 736 # endif 737 #endif 738 739 #ifndef PNG_NO_STDIO 740 # define PNG_TIME_RFC1123_SUPPORTED 741 #endif 742 743 /* This adds extra functions in pngget.c for accessing data from the 744 * info pointer (added in version 0.99) 745 * png_get_image_width() 746 * png_get_image_height() 747 * png_get_bit_depth() 748 * png_get_color_type() 749 * png_get_compression_type() 750 * png_get_filter_type() 751 * png_get_interlace_type() 752 * png_get_pixel_aspect_ratio() 753 * png_get_pixels_per_meter() 754 * png_get_x_offset_pixels() 755 * png_get_y_offset_pixels() 756 * png_get_x_offset_microns() 757 * png_get_y_offset_microns() 758 */ 759 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) 760 # define PNG_EASY_ACCESS_SUPPORTED 761 #endif 762 763 /* Added at libpng-1.2.0 */ 764 #ifndef PNG_1_0_X 765 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) 766 # define PNG_USER_MEM_SUPPORTED 767 #endif 768 #endif /* PNG_1_0_X */ 769 770 /* Added at libpng-1.2.6 */ 771 #ifndef PNG_1_0_X 772 # ifndef PNG_SET_USER_LIMITS_SUPPORTED 773 # ifndef PNG_NO_SET_USER_LIMITS 774 # define PNG_SET_USER_LIMITS_SUPPORTED 775 # endif 776 # endif 777 #endif /* PNG_1_0_X */ 778 779 /* Added at libpng-1.0.53 and 1.2.43 */ 780 #ifndef PNG_USER_LIMITS_SUPPORTED 781 # ifndef PNG_NO_USER_LIMITS 782 # define PNG_USER_LIMITS_SUPPORTED 783 # endif 784 #endif 785 786 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter 787 * how large, set these limits to 0x7fffffffL 788 */ 789 #ifndef PNG_USER_WIDTH_MAX 790 # define PNG_USER_WIDTH_MAX 1000000L 791 #endif 792 #ifndef PNG_USER_HEIGHT_MAX 793 # define PNG_USER_HEIGHT_MAX 1000000L 794 #endif 795 796 /* Added at libpng-1.2.43. To accept all valid PNGs no matter 797 * how large, set these two limits to 0. 798 */ 799 #ifndef PNG_USER_CHUNK_CACHE_MAX 800 # define PNG_USER_CHUNK_CACHE_MAX 0 801 #endif 802 803 /* Added at libpng-1.2.43 */ 804 #ifndef PNG_USER_CHUNK_MALLOC_MAX 805 # define PNG_USER_CHUNK_MALLOC_MAX 0 806 #endif 807 808 #ifndef PNG_LITERAL_SHARP 809 # define PNG_LITERAL_SHARP 0x23 810 #endif 811 #ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET 812 # define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b 813 #endif 814 #ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET 815 # define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d 816 #endif 817 818 /* Added at libpng-1.2.34 */ 819 #ifndef PNG_STRING_NEWLINE 820 #define PNG_STRING_NEWLINE "\n" 821 #endif 822 823 /* These are currently experimental features, define them if you want */ 824 825 /* very little testing */ 826 /* 827 #ifdef PNG_READ_SUPPORTED 828 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 829 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 830 # endif 831 #endif 832 */ 833 834 /* This is only for PowerPC big-endian and 680x0 systems */ 835 /* some testing */ 836 /* 837 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED 838 # define PNG_READ_BIG_ENDIAN_SUPPORTED 839 #endif 840 */ 841 842 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */ 843 /* 844 #define PNG_NO_POINTER_INDEXING 845 */ 846 847 #if !defined(PNG_NO_POINTER_INDEXING) && \ 848 !defined(PNG_POINTER_INDEXING_SUPPORTED) 849 # define PNG_POINTER_INDEXING_SUPPORTED 850 #endif 851 852 /* These functions are turned off by default, as they will be phased out. */ 853 /* 854 #define PNG_USELESS_TESTS_SUPPORTED 855 #define PNG_CORRECT_PALETTE_SUPPORTED 856 */ 857 858 /* Any chunks you are not interested in, you can undef here. The 859 * ones that allocate memory may be expecially important (hIST, 860 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info 861 * a bit smaller. 862 */ 863 864 #if defined(PNG_READ_SUPPORTED) && \ 865 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 866 !defined(PNG_NO_READ_ANCILLARY_CHUNKS) 867 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 868 #endif 869 870 #if defined(PNG_WRITE_SUPPORTED) && \ 871 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 872 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) 873 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 874 #endif 875 876 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 877 878 #ifdef PNG_NO_READ_TEXT 879 # define PNG_NO_READ_iTXt 880 # define PNG_NO_READ_tEXt 881 # define PNG_NO_READ_zTXt 882 #endif 883 #ifndef PNG_NO_READ_bKGD 884 # define PNG_READ_bKGD_SUPPORTED 885 # define PNG_bKGD_SUPPORTED 886 #endif 887 #ifndef PNG_NO_READ_cHRM 888 # define PNG_READ_cHRM_SUPPORTED 889 # define PNG_cHRM_SUPPORTED 890 #endif 891 #ifndef PNG_NO_READ_gAMA 892 # define PNG_READ_gAMA_SUPPORTED 893 # define PNG_gAMA_SUPPORTED 894 #endif 895 #ifndef PNG_NO_READ_hIST 896 # define PNG_READ_hIST_SUPPORTED 897 # define PNG_hIST_SUPPORTED 898 #endif 899 #ifndef PNG_NO_READ_iCCP 900 # define PNG_READ_iCCP_SUPPORTED 901 # define PNG_iCCP_SUPPORTED 902 #endif 903 #ifndef PNG_NO_READ_iTXt 904 # ifndef PNG_READ_iTXt_SUPPORTED 905 # define PNG_READ_iTXt_SUPPORTED 906 # endif 907 # ifndef PNG_iTXt_SUPPORTED 908 # define PNG_iTXt_SUPPORTED 909 # endif 910 #endif 911 #ifndef PNG_NO_READ_oFFs 912 # define PNG_READ_oFFs_SUPPORTED 913 # define PNG_oFFs_SUPPORTED 914 #endif 915 #ifndef PNG_NO_READ_pCAL 916 # define PNG_READ_pCAL_SUPPORTED 917 # define PNG_pCAL_SUPPORTED 918 #endif 919 #ifndef PNG_NO_READ_sCAL 920 # define PNG_READ_sCAL_SUPPORTED 921 # define PNG_sCAL_SUPPORTED 922 #endif 923 #ifndef PNG_NO_READ_pHYs 924 # define PNG_READ_pHYs_SUPPORTED 925 # define PNG_pHYs_SUPPORTED 926 #endif 927 #ifndef PNG_NO_READ_sBIT 928 # define PNG_READ_sBIT_SUPPORTED 929 # define PNG_sBIT_SUPPORTED 930 #endif 931 #ifndef PNG_NO_READ_sPLT 932 # define PNG_READ_sPLT_SUPPORTED 933 # define PNG_sPLT_SUPPORTED 934 #endif 935 #ifndef PNG_NO_READ_sRGB 936 # define PNG_READ_sRGB_SUPPORTED 937 # define PNG_sRGB_SUPPORTED 938 #endif 939 #ifndef PNG_NO_READ_tEXt 940 # define PNG_READ_tEXt_SUPPORTED 941 # define PNG_tEXt_SUPPORTED 942 #endif 943 #ifndef PNG_NO_READ_tIME 944 # define PNG_READ_tIME_SUPPORTED 945 # define PNG_tIME_SUPPORTED 946 #endif 947 #ifndef PNG_NO_READ_tRNS 948 # define PNG_READ_tRNS_SUPPORTED 949 # define PNG_tRNS_SUPPORTED 950 #endif 951 #ifndef PNG_NO_READ_zTXt 952 # define PNG_READ_zTXt_SUPPORTED 953 # define PNG_zTXt_SUPPORTED 954 #endif 955 #ifndef PNG_NO_READ_OPT_PLTE 956 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ 957 #endif /* optional PLTE chunk in RGB and RGBA images */ 958 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ 959 defined(PNG_READ_zTXt_SUPPORTED) 960 # define PNG_READ_TEXT_SUPPORTED 961 # define PNG_TEXT_SUPPORTED 962 #endif 963 964 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ 965 966 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS 967 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED 968 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 969 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 970 # endif 971 #endif 972 #if !defined(PNG_NO_READ_USER_CHUNKS) && \ 973 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) 974 # define PNG_READ_USER_CHUNKS_SUPPORTED 975 # define PNG_USER_CHUNKS_SUPPORTED 976 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS 977 # undef PNG_NO_READ_UNKNOWN_CHUNKS 978 # endif 979 # ifdef PNG_NO_HANDLE_AS_UNKNOWN 980 # undef PNG_NO_HANDLE_AS_UNKNOWN 981 # endif 982 #endif 983 984 #ifndef PNG_NO_HANDLE_AS_UNKNOWN 985 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 986 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 987 # endif 988 #endif 989 990 #ifdef PNG_WRITE_SUPPORTED 991 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 992 993 #ifdef PNG_NO_WRITE_TEXT 994 # define PNG_NO_WRITE_iTXt 995 # define PNG_NO_WRITE_tEXt 996 # define PNG_NO_WRITE_zTXt 997 #endif 998 #ifndef PNG_NO_WRITE_bKGD 999 # define PNG_WRITE_bKGD_SUPPORTED 1000 # ifndef PNG_bKGD_SUPPORTED 1001 # define PNG_bKGD_SUPPORTED 1002 # endif 1003 #endif 1004 #ifndef PNG_NO_WRITE_cHRM 1005 # define PNG_WRITE_cHRM_SUPPORTED 1006 # ifndef PNG_cHRM_SUPPORTED 1007 # define PNG_cHRM_SUPPORTED 1008 # endif 1009 #endif 1010 #ifndef PNG_NO_WRITE_gAMA 1011 # define PNG_WRITE_gAMA_SUPPORTED 1012 # ifndef PNG_gAMA_SUPPORTED 1013 # define PNG_gAMA_SUPPORTED 1014 # endif 1015 #endif 1016 #ifndef PNG_NO_WRITE_hIST 1017 # define PNG_WRITE_hIST_SUPPORTED 1018 # ifndef PNG_hIST_SUPPORTED 1019 # define PNG_hIST_SUPPORTED 1020 # endif 1021 #endif 1022 #ifndef PNG_NO_WRITE_iCCP 1023 # define PNG_WRITE_iCCP_SUPPORTED 1024 # ifndef PNG_iCCP_SUPPORTED 1025 # define PNG_iCCP_SUPPORTED 1026 # endif 1027 #endif 1028 #ifndef PNG_NO_WRITE_iTXt 1029 # ifndef PNG_WRITE_iTXt_SUPPORTED 1030 # define PNG_WRITE_iTXt_SUPPORTED 1031 # endif 1032 # ifndef PNG_iTXt_SUPPORTED 1033 # define PNG_iTXt_SUPPORTED 1034 # endif 1035 #endif 1036 #ifndef PNG_NO_WRITE_oFFs 1037 # define PNG_WRITE_oFFs_SUPPORTED 1038 # ifndef PNG_oFFs_SUPPORTED 1039 # define PNG_oFFs_SUPPORTED 1040 # endif 1041 #endif 1042 #ifndef PNG_NO_WRITE_pCAL 1043 # define PNG_WRITE_pCAL_SUPPORTED 1044 # ifndef PNG_pCAL_SUPPORTED 1045 # define PNG_pCAL_SUPPORTED 1046 # endif 1047 #endif 1048 #ifndef PNG_NO_WRITE_sCAL 1049 # define PNG_WRITE_sCAL_SUPPORTED 1050 # ifndef PNG_sCAL_SUPPORTED 1051 # define PNG_sCAL_SUPPORTED 1052 # endif 1053 #endif 1054 #ifndef PNG_NO_WRITE_pHYs 1055 # define PNG_WRITE_pHYs_SUPPORTED 1056 # ifndef PNG_pHYs_SUPPORTED 1057 # define PNG_pHYs_SUPPORTED 1058 # endif 1059 #endif 1060 #ifndef PNG_NO_WRITE_sBIT 1061 # define PNG_WRITE_sBIT_SUPPORTED 1062 # ifndef PNG_sBIT_SUPPORTED 1063 # define PNG_sBIT_SUPPORTED 1064 # endif 1065 #endif 1066 #ifndef PNG_NO_WRITE_sPLT 1067 # define PNG_WRITE_sPLT_SUPPORTED 1068 # ifndef PNG_sPLT_SUPPORTED 1069 # define PNG_sPLT_SUPPORTED 1070 # endif 1071 #endif 1072 #ifndef PNG_NO_WRITE_sRGB 1073 # define PNG_WRITE_sRGB_SUPPORTED 1074 # ifndef PNG_sRGB_SUPPORTED 1075 # define PNG_sRGB_SUPPORTED 1076 # endif 1077 #endif 1078 #ifndef PNG_NO_WRITE_tEXt 1079 # define PNG_WRITE_tEXt_SUPPORTED 1080 # ifndef PNG_tEXt_SUPPORTED 1081 # define PNG_tEXt_SUPPORTED 1082 # endif 1083 #endif 1084 #ifndef PNG_NO_WRITE_tIME 1085 # define PNG_WRITE_tIME_SUPPORTED 1086 # ifndef PNG_tIME_SUPPORTED 1087 # define PNG_tIME_SUPPORTED 1088 # endif 1089 #endif 1090 #ifndef PNG_NO_WRITE_tRNS 1091 # define PNG_WRITE_tRNS_SUPPORTED 1092 # ifndef PNG_tRNS_SUPPORTED 1093 # define PNG_tRNS_SUPPORTED 1094 # endif 1095 #endif 1096 #ifndef PNG_NO_WRITE_zTXt 1097 # define PNG_WRITE_zTXt_SUPPORTED 1098 # ifndef PNG_zTXt_SUPPORTED 1099 # define PNG_zTXt_SUPPORTED 1100 # endif 1101 #endif 1102 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ 1103 defined(PNG_WRITE_zTXt_SUPPORTED) 1104 # define PNG_WRITE_TEXT_SUPPORTED 1105 # ifndef PNG_TEXT_SUPPORTED 1106 # define PNG_TEXT_SUPPORTED 1107 # endif 1108 #endif 1109 1110 #ifdef PNG_WRITE_tIME_SUPPORTED 1111 # ifndef PNG_NO_CONVERT_tIME 1112 # ifndef _WIN32_WCE 1113 /* The "tm" structure is not supported on WindowsCE */ 1114 # ifndef PNG_CONVERT_tIME_SUPPORTED 1115 # define PNG_CONVERT_tIME_SUPPORTED 1116 # endif 1117 # endif 1118 # endif 1119 #endif 1120 1121 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ 1122 1123 #if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED) 1124 # define PNG_WRITE_FILTER_SUPPORTED 1125 #endif 1126 1127 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS 1128 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1129 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1130 # define PNG_UNKNOWN_CHUNKS_SUPPORTED 1131 # endif 1132 #endif 1133 1134 #ifndef PNG_NO_HANDLE_AS_UNKNOWN 1135 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1136 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1137 # endif 1138 #endif 1139 #endif /* PNG_WRITE_SUPPORTED */ 1140 1141 /* Turn this off to disable png_read_png() and 1142 * png_write_png() and leave the row_pointers member 1143 * out of the info structure. 1144 */ 1145 #ifndef PNG_NO_INFO_IMAGE 1146 # define PNG_INFO_IMAGE_SUPPORTED 1147 #endif 1148 1149 /* Need the time information for converting tIME chunks */ 1150 #ifdef PNG_CONVERT_tIME_SUPPORTED 1151 /* "time.h" functions are not supported on WindowsCE */ 1152 # include <time.h> 1153 #endif 1154 1155 /* Some typedefs to get us started. These should be safe on most of the 1156 * common platforms. The typedefs should be at least as large as the 1157 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they 1158 * don't have to be exactly that size. Some compilers dislike passing 1159 * unsigned shorts as function parameters, so you may be better off using 1160 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may 1161 * want to have unsigned int for png_uint_32 instead of unsigned long. 1162 */ 1163 1164 #include <stdint.h> 1165 typedef uint_fast32_t png_uint_32; 1166 typedef int_fast32_t png_int_32; 1167 typedef uint_fast16_t png_uint_16; 1168 typedef int_fast16_t png_int_16; 1169 typedef uint8_t png_byte; 1170 typedef size_t png_size_t; 1171 # define png_sizeof(x) sizeof(x) 1172 1173 /* The following is needed for medium model support. It cannot be in the 1174 * PNG_INTERNAL section. Needs modification for other compilers besides 1175 * MSC. Model independent support declares all arrays and pointers to be 1176 * large using the far keyword. The zlib version used must also support 1177 * model independent data. As of version zlib 1.0.4, the necessary changes 1178 * have been made in zlib. The USE_FAR_KEYWORD define triggers other 1179 * changes that are needed. (Tim Wegner) 1180 */ 1181 1182 /* Separate compiler dependencies (problem here is that zlib.h always 1183 defines FAR. (SJT) */ 1184 #ifdef __BORLANDC__ 1185 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) 1186 # define LDATA 1 1187 # else 1188 # define LDATA 0 1189 # endif 1190 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ 1191 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) 1192 # define PNG_MAX_MALLOC_64K 1193 # if (LDATA != 1) 1194 # ifndef FAR 1195 # define FAR __far 1196 # endif 1197 # define USE_FAR_KEYWORD 1198 # endif /* LDATA != 1 */ 1199 /* Possibly useful for moving data out of default segment. 1200 * Uncomment it if you want. Could also define FARDATA as 1201 * const if your compiler supports it. (SJT) 1202 # define FARDATA FAR 1203 */ 1204 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */ 1205 #endif /* __BORLANDC__ */ 1206 1207 1208 /* Suggest testing for specific compiler first before testing for 1209 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, 1210 * making reliance oncertain keywords suspect. (SJT) 1211 */ 1212 1213 /* MSC Medium model */ 1214 #ifdef FAR 1215 # ifdef M_I86MM 1216 # define USE_FAR_KEYWORD 1217 # define FARDATA FAR 1218 # include <dos.h> 1219 # endif 1220 #endif 1221 1222 /* SJT: default case */ 1223 #ifndef FAR 1224 # define FAR 1225 #endif 1226 1227 /* At this point FAR is always defined */ 1228 #ifndef FARDATA 1229 # define FARDATA 1230 #endif 1231 1232 /* Typedef for floating-point numbers that are converted 1233 to fixed-point with a multiple of 100,000, e.g., int_gamma */ 1234 typedef png_int_32 png_fixed_point; 1235 1236 /* Add typedefs for pointers */ 1237 typedef void FAR * png_voidp; 1238 typedef png_byte FAR * png_bytep; 1239 typedef png_uint_32 FAR * png_uint_32p; 1240 typedef png_int_32 FAR * png_int_32p; 1241 typedef png_uint_16 FAR * png_uint_16p; 1242 typedef png_int_16 FAR * png_int_16p; 1243 typedef PNG_CONST char FAR * png_const_charp; 1244 typedef char FAR * png_charp; 1245 typedef png_fixed_point FAR * png_fixed_point_p; 1246 1247 #ifndef PNG_NO_STDIO 1248 #ifdef _WIN32_WCE 1249 typedef HANDLE png_FILE_p; 1250 #else 1251 typedef FILE * png_FILE_p; 1252 #endif 1253 #endif 1254 1255 #ifdef PNG_FLOATING_POINT_SUPPORTED 1256 typedef double FAR * png_doublep; 1257 #endif 1258 1259 /* Pointers to pointers; i.e. arrays */ 1260 typedef png_byte FAR * FAR * png_bytepp; 1261 typedef png_uint_32 FAR * FAR * png_uint_32pp; 1262 typedef png_int_32 FAR * FAR * png_int_32pp; 1263 typedef png_uint_16 FAR * FAR * png_uint_16pp; 1264 typedef png_int_16 FAR * FAR * png_int_16pp; 1265 typedef PNG_CONST char FAR * FAR * png_const_charpp; 1266 typedef char FAR * FAR * png_charpp; 1267 typedef png_fixed_point FAR * FAR * png_fixed_point_pp; 1268 #ifdef PNG_FLOATING_POINT_SUPPORTED 1269 typedef double FAR * FAR * png_doublepp; 1270 #endif 1271 1272 /* Pointers to pointers to pointers; i.e., pointer to array */ 1273 typedef char FAR * FAR * FAR * png_charppp; 1274 1275 #if defined(PNG_1_0_X) || defined(PNG_1_2_X) 1276 /* SPC - Is this stuff deprecated? */ 1277 /* It'll be removed as of libpng-1.4.0 - GR-P */ 1278 /* libpng typedefs for types in zlib. If zlib changes 1279 * or another compression library is used, then change these. 1280 * Eliminates need to change all the source files. 1281 */ 1282 typedef charf * png_zcharp; 1283 typedef charf * FAR * png_zcharpp; 1284 typedef z_stream FAR * png_zstreamp; 1285 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */ 1286 1287 /* 1288 * Define PNG_BUILD_DLL if the module being built is a Windows 1289 * LIBPNG DLL. 1290 * 1291 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. 1292 * It is equivalent to Microsoft predefined macro _DLL that is 1293 * automatically defined when you compile using the share 1294 * version of the CRT (C Run-Time library) 1295 * 1296 * The cygwin mods make this behavior a little different: 1297 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin 1298 * Define PNG_STATIC if you are building a static library for use with cygwin, 1299 * -or- if you are building an application that you want to link to the 1300 * static library. 1301 * PNG_USE_DLL is defined by default (no user action needed) unless one of 1302 * the other flags is defined. 1303 */ 1304 1305 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) 1306 # define PNG_DLL 1307 #endif 1308 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. 1309 * When building a static lib, default to no GLOBAL ARRAYS, but allow 1310 * command-line override 1311 */ 1312 #ifdef __CYGWIN__ 1313 # ifndef PNG_STATIC 1314 # ifdef PNG_USE_GLOBAL_ARRAYS 1315 # undef PNG_USE_GLOBAL_ARRAYS 1316 # endif 1317 # ifndef PNG_USE_LOCAL_ARRAYS 1318 # define PNG_USE_LOCAL_ARRAYS 1319 # endif 1320 # else 1321 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) 1322 # ifdef PNG_USE_GLOBAL_ARRAYS 1323 # undef PNG_USE_GLOBAL_ARRAYS 1324 # endif 1325 # endif 1326 # endif 1327 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1328 # define PNG_USE_LOCAL_ARRAYS 1329 # endif 1330 #endif 1331 1332 /* Do not use global arrays (helps with building DLL's) 1333 * They are no longer used in libpng itself, since version 1.0.5c, 1334 * but might be required for some pre-1.0.5c applications. 1335 */ 1336 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1337 # if defined(PNG_NO_GLOBAL_ARRAYS) || \ 1338 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER) 1339 # define PNG_USE_LOCAL_ARRAYS 1340 # else 1341 # define PNG_USE_GLOBAL_ARRAYS 1342 # endif 1343 #endif 1344 1345 #ifdef __CYGWIN__ 1346 # undef PNGAPI 1347 # define PNGAPI __cdecl 1348 # undef PNG_IMPEXP 1349 # define PNG_IMPEXP 1350 #endif 1351 1352 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", 1353 * you may get warnings regarding the linkage of png_zalloc and png_zfree. 1354 * Don't ignore those warnings; you must also reset the default calling 1355 * convention in your compiler to match your PNGAPI, and you must build 1356 * zlib and your applications the same way you build libpng. 1357 */ 1358 1359 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF) 1360 # ifndef PNG_NO_MODULEDEF 1361 # define PNG_NO_MODULEDEF 1362 # endif 1363 #endif 1364 1365 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) 1366 # define PNG_IMPEXP 1367 #endif 1368 1369 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ 1370 (( defined(_Windows) || defined(_WINDOWS) || \ 1371 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) 1372 1373 # ifndef PNGAPI 1374 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) 1375 # define PNGAPI __cdecl 1376 # else 1377 # define PNGAPI _cdecl 1378 # endif 1379 # endif 1380 1381 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ 1382 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) 1383 # define PNG_IMPEXP 1384 # endif 1385 1386 # ifndef PNG_IMPEXP 1387 1388 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol 1389 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol 1390 1391 /* Borland/Microsoft */ 1392 # if defined(_MSC_VER) || defined(__BORLANDC__) 1393 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) 1394 # define PNG_EXPORT PNG_EXPORT_TYPE1 1395 # else 1396 # define PNG_EXPORT PNG_EXPORT_TYPE2 1397 # ifdef PNG_BUILD_DLL 1398 # define PNG_IMPEXP __export 1399 # else 1400 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in 1401 VC++ */ 1402 # endif /* Exists in Borland C++ for 1403 C++ classes (== huge) */ 1404 # endif 1405 # endif 1406 1407 # ifndef PNG_IMPEXP 1408 # ifdef PNG_BUILD_DLL 1409 # define PNG_IMPEXP __declspec(dllexport) 1410 # else 1411 # define PNG_IMPEXP __declspec(dllimport) 1412 # endif 1413 # endif 1414 # endif /* PNG_IMPEXP */ 1415 #else /* !(DLL || non-cygwin WINDOWS) */ 1416 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 1417 # ifndef PNGAPI 1418 # define PNGAPI _System 1419 # endif 1420 # else 1421 # if 0 /* ... other platforms, with other meanings */ 1422 # endif 1423 # endif 1424 #endif 1425 1426 #ifndef PNGAPI 1427 # define PNGAPI 1428 #endif 1429 #ifndef PNG_IMPEXP 1430 # define PNG_IMPEXP 1431 #endif 1432 1433 #ifdef PNG_BUILDSYMS 1434 # ifndef PNG_EXPORT 1435 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END 1436 # endif 1437 # ifdef PNG_USE_GLOBAL_ARRAYS 1438 # ifndef PNG_EXPORT_VAR 1439 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT 1440 # endif 1441 # endif 1442 #endif 1443 1444 #ifndef PNG_EXPORT 1445 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol 1446 #endif 1447 1448 #ifdef PNG_USE_GLOBAL_ARRAYS 1449 # ifndef PNG_EXPORT_VAR 1450 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type 1451 # endif 1452 #endif 1453 1454 #ifdef PNG_PEDANTIC_WARNINGS 1455 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED 1456 # define PNG_PEDANTIC_WARNINGS_SUPPORTED 1457 # endif 1458 #endif 1459 1460 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED 1461 /* Support for compiler specific function attributes. These are used 1462 * so that where compiler support is available incorrect use of API 1463 * functions in png.h will generate compiler warnings. Added at libpng 1464 * version 1.2.41. 1465 */ 1466 # ifdef __GNUC__ 1467 # ifndef PNG_USE_RESULT 1468 # define PNG_USE_RESULT __attribute__((__warn_unused_result__)) 1469 # endif 1470 # ifndef PNG_NORETURN 1471 # define PNG_NORETURN __attribute__((__noreturn__)) 1472 # endif 1473 # ifndef PNG_ALLOCATED 1474 # define PNG_ALLOCATED __attribute__((__malloc__)) 1475 # endif 1476 1477 /* This specifically protects structure members that should only be 1478 * accessed from within the library, therefore should be empty during 1479 * a library build. 1480 */ 1481 # ifndef PNG_DEPRECATED 1482 # define PNG_DEPRECATED __attribute__((__deprecated__)) 1483 # endif 1484 # ifndef PNG_DEPSTRUCT 1485 # define PNG_DEPSTRUCT __attribute__((__deprecated__)) 1486 # endif 1487 # ifndef PNG_PRIVATE 1488 # if 0 /* Doesn't work so we use deprecated instead*/ 1489 # define PNG_PRIVATE \ 1490 __attribute__((__warning__("This function is not exported by libpng."))) 1491 # else 1492 # define PNG_PRIVATE \ 1493 __attribute__((__deprecated__)) 1494 # endif 1495 # endif /* PNG_PRIVATE */ 1496 # endif /* __GNUC__ */ 1497 #endif /* PNG_PEDANTIC_WARNINGS */ 1498 1499 #ifndef PNG_DEPRECATED 1500 # define PNG_DEPRECATED /* Use of this function is deprecated */ 1501 #endif 1502 #ifndef PNG_USE_RESULT 1503 # define PNG_USE_RESULT /* The result of this function must be checked */ 1504 #endif 1505 #ifndef PNG_NORETURN 1506 # define PNG_NORETURN /* This function does not return */ 1507 #endif 1508 #ifndef PNG_ALLOCATED 1509 # define PNG_ALLOCATED /* The result of the function is new memory */ 1510 #endif 1511 #ifndef PNG_DEPSTRUCT 1512 # define PNG_DEPSTRUCT /* Access to this struct member is deprecated */ 1513 #endif 1514 #ifndef PNG_PRIVATE 1515 # define PNG_PRIVATE /* This is a private libpng function */ 1516 #endif 1517 1518 /* User may want to use these so they are not in PNG_INTERNAL. Any library 1519 * functions that are passed far data must be model independent. 1520 */ 1521 1522 #ifndef PNG_ABORT 1523 # define PNG_ABORT() abort() 1524 #endif 1525 1526 #ifdef PNG_SETJMP_SUPPORTED 1527 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) 1528 #else 1529 # define png_jmpbuf(png_ptr) \ 1530 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) 1531 #endif 1532 1533 #ifdef USE_FAR_KEYWORD /* memory model independent fns */ 1534 /* Use this to make far-to-near assignments */ 1535 # define CHECK 1 1536 # define NOCHECK 0 1537 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) 1538 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) 1539 # define png_snprintf _fsnprintf /* Added to v 1.2.19 */ 1540 # define png_strlen _fstrlen 1541 # define png_memcmp _fmemcmp /* SJT: added */ 1542 # define png_memcpy _fmemcpy 1543 # define png_memset _fmemset 1544 #else /* Use the usual functions */ 1545 # define CVT_PTR(ptr) (ptr) 1546 # define CVT_PTR_NOCHECK(ptr) (ptr) 1547 # ifndef PNG_NO_SNPRINTF 1548 # ifdef _MSC_VER 1549 # define png_snprintf _snprintf /* Added to v 1.2.19 */ 1550 # define png_snprintf2 _snprintf 1551 # define png_snprintf6 _snprintf 1552 # else 1553 # define png_snprintf snprintf /* Added to v 1.2.19 */ 1554 # define png_snprintf2 snprintf 1555 # define png_snprintf6 snprintf 1556 # endif 1557 # else 1558 /* You don't have or don't want to use snprintf(). Caution: Using 1559 * sprintf instead of snprintf exposes your application to accidental 1560 * or malevolent buffer overflows. If you don't have snprintf() 1561 * as a general rule you should provide one (you can get one from 1562 * Portable OpenSSH). 1563 */ 1564 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1) 1565 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2) 1566 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \ 1567 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6) 1568 # endif 1569 # define png_strlen strlen 1570 # define png_memcmp memcmp /* SJT: added */ 1571 # define png_memcpy memcpy 1572 # define png_memset memset 1573 #endif 1574 /* End of memory model independent support */ 1575 1576 /* Just a little check that someone hasn't tried to define something 1577 * contradictory. 1578 */ 1579 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) 1580 # undef PNG_ZBUF_SIZE 1581 # define PNG_ZBUF_SIZE 65536L 1582 #endif 1583 1584 /* Added at libpng-1.2.8 */ 1585 #endif /* PNG_VERSION_INFO_ONLY */ 1586 1587 #endif /* PNGCONF_H */ 1588