1 2/* pngconf.h - machine configurable file for libpng 3 * 4 * libpng version 1.2.19 - August 18, 2007 5 * For conditions of distribution and use, see copyright notice in png.h 6 * Copyright (c) 1998-2007 Glenn Randers-Pehrson 7 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) 8 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) 9 */ 10 11/* Any machine specific code is near the front of this file, so if you 12 * are configuring libpng for a machine, you may want to read the section 13 * starting here down to where it starts to typedef png_color, png_text, 14 * and png_info. 15 */ 16 17#ifndef PNGCONF_H 18#define PNGCONF_H 19 20#define PNG_1_2_X 21 22/* 23 * PNG_USER_CONFIG has to be defined on the compiler command line. This 24 * includes the resource compiler for Windows DLL configurations. 25 */ 26#ifdef PNG_USER_CONFIG 27# ifndef PNG_USER_PRIVATEBUILD 28# define PNG_USER_PRIVATEBUILD 29# endif 30#include "pngusr.h" 31#endif 32 33/* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */ 34#ifdef PNG_CONFIGURE_LIBPNG 35#ifdef HAVE_CONFIG_H 36#include "config.h" 37#endif 38#endif 39 40/* 41 * Added at libpng-1.2.8 42 * 43 * If you create a private DLL you need to define in "pngusr.h" the followings: 44 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of 45 * the DLL was built> 46 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons." 47 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to 48 * distinguish your DLL from those of the official release. These 49 * correspond to the trailing letters that come after the version 50 * number and must match your private DLL name> 51 * e.g. // private DLL "libpng13gx.dll" 52 * #define PNG_USER_DLLFNAME_POSTFIX "gx" 53 * 54 * The following macros are also at your disposal if you want to complete the 55 * DLL VERSIONINFO structure. 56 * - PNG_USER_VERSIONINFO_COMMENTS 57 * - PNG_USER_VERSIONINFO_COMPANYNAME 58 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS 59 */ 60 61#ifdef __STDC__ 62#ifdef SPECIALBUILD 63# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\ 64 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.") 65#endif 66 67#ifdef PRIVATEBUILD 68# pragma message("PRIVATEBUILD is deprecated.\ 69 Use PNG_USER_PRIVATEBUILD instead.") 70# define PNG_USER_PRIVATEBUILD PRIVATEBUILD 71#endif 72#endif /* __STDC__ */ 73 74#ifndef PNG_VERSION_INFO_ONLY 75 76/* End of material added to libpng-1.2.8 */ 77 78/* Added at libpng-1.2.19 */ 79#ifndef PNG_NO_WARN_UNINITIALIZED_ROW 80# ifndef PNG_WARN_UNINITIALIZED_ROW 81# define PNG_WARN_UNINITIALIZED_ROW 1 /* 0: warning; 1: error */ 82# endif 83#endif 84/* End of material added at libpng-1.2.19 */ 85 86/* This is the size of the compression buffer, and thus the size of 87 * an IDAT chunk. Make this whatever size you feel is best for your 88 * machine. One of these will be allocated per png_struct. When this 89 * is full, it writes the data to the disk, and does some other 90 * calculations. Making this an extremely small size will slow 91 * the library down, but you may want to experiment to determine 92 * where it becomes significant, if you are concerned with memory 93 * usage. Note that zlib allocates at least 32Kb also. For readers, 94 * this describes the size of the buffer available to read the data in. 95 * Unless this gets smaller than the size of a row (compressed), 96 * it should not make much difference how big this is. 97 */ 98 99#ifndef PNG_ZBUF_SIZE 100# define PNG_ZBUF_SIZE 8192 101#endif 102 103/* Enable if you want a write-only libpng */ 104 105#ifndef PNG_NO_READ_SUPPORTED 106# define PNG_READ_SUPPORTED 107#endif 108 109/* Enable if you want a read-only libpng */ 110 111#ifndef PNG_NO_WRITE_SUPPORTED 112# define PNG_WRITE_SUPPORTED 113#endif 114 115/* Enabled by default in 1.2.0. You can disable this if you don't need to 116 support PNGs that are embedded in MNG datastreams */ 117#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES) 118# ifndef PNG_MNG_FEATURES_SUPPORTED 119# define PNG_MNG_FEATURES_SUPPORTED 120# endif 121#endif 122 123#ifndef PNG_NO_FLOATING_POINT_SUPPORTED 124# ifndef PNG_FLOATING_POINT_SUPPORTED 125# define PNG_FLOATING_POINT_SUPPORTED 126# endif 127#endif 128 129/* If you are running on a machine where you cannot allocate more 130 * than 64K of memory at once, uncomment this. While libpng will not 131 * normally need that much memory in a chunk (unless you load up a very 132 * large file), zlib needs to know how big of a chunk it can use, and 133 * libpng thus makes sure to check any memory allocation to verify it 134 * will fit into memory. 135#define PNG_MAX_MALLOC_64K 136 */ 137#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) 138# define PNG_MAX_MALLOC_64K 139#endif 140 141/* Special munging to support doing things the 'cygwin' way: 142 * 'Normal' png-on-win32 defines/defaults: 143 * PNG_BUILD_DLL -- building dll 144 * PNG_USE_DLL -- building an application, linking to dll 145 * (no define) -- building static library, or building an 146 * application and linking to the static lib 147 * 'Cygwin' defines/defaults: 148 * PNG_BUILD_DLL -- (ignored) building the dll 149 * (no define) -- (ignored) building an application, linking to the dll 150 * PNG_STATIC -- (ignored) building the static lib, or building an 151 * application that links to the static lib. 152 * ALL_STATIC -- (ignored) building various static libs, or building an 153 * application that links to the static libs. 154 * Thus, 155 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and 156 * this bit of #ifdefs will define the 'correct' config variables based on 157 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but 158 * unnecessary. 159 * 160 * Also, the precedence order is: 161 * ALL_STATIC (since we can't #undef something outside our namespace) 162 * PNG_BUILD_DLL 163 * PNG_STATIC 164 * (nothing) == PNG_USE_DLL 165 * 166 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent 167 * of auto-import in binutils, we no longer need to worry about 168 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, 169 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes 170 * to __declspec() stuff. However, we DO need to worry about 171 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults 172 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. 173 */ 174#if defined(__CYGWIN__) 175# if defined(ALL_STATIC) 176# if defined(PNG_BUILD_DLL) 177# undef PNG_BUILD_DLL 178# endif 179# if defined(PNG_USE_DLL) 180# undef PNG_USE_DLL 181# endif 182# if defined(PNG_DLL) 183# undef PNG_DLL 184# endif 185# if !defined(PNG_STATIC) 186# define PNG_STATIC 187# endif 188# else 189# if defined (PNG_BUILD_DLL) 190# if defined(PNG_STATIC) 191# undef PNG_STATIC 192# endif 193# if defined(PNG_USE_DLL) 194# undef PNG_USE_DLL 195# endif 196# if !defined(PNG_DLL) 197# define PNG_DLL 198# endif 199# else 200# if defined(PNG_STATIC) 201# if defined(PNG_USE_DLL) 202# undef PNG_USE_DLL 203# endif 204# if defined(PNG_DLL) 205# undef PNG_DLL 206# endif 207# else 208# if !defined(PNG_USE_DLL) 209# define PNG_USE_DLL 210# endif 211# if !defined(PNG_DLL) 212# define PNG_DLL 213# endif 214# endif 215# endif 216# endif 217#endif 218 219/* This protects us against compilers that run on a windowing system 220 * and thus don't have or would rather us not use the stdio types: 221 * stdin, stdout, and stderr. The only one currently used is stderr 222 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will 223 * prevent these from being compiled and used. #defining PNG_NO_STDIO 224 * will also prevent these, plus will prevent the entire set of stdio 225 * macros and functions (FILE *, printf, etc.) from being compiled and used, 226 * unless (PNG_DEBUG > 0) has been #defined. 227 * 228 * #define PNG_NO_CONSOLE_IO 229 * #define PNG_NO_STDIO 230 */ 231 232#if defined(_WIN32_WCE) 233# include <windows.h> 234 /* Console I/O functions are not supported on WindowsCE */ 235# define PNG_NO_CONSOLE_IO 236# ifdef PNG_DEBUG 237# undef PNG_DEBUG 238# endif 239#endif 240 241#ifdef PNG_BUILD_DLL 242# ifndef PNG_CONSOLE_IO_SUPPORTED 243# ifndef PNG_NO_CONSOLE_IO 244# define PNG_NO_CONSOLE_IO 245# endif 246# endif 247#endif 248 249# ifdef PNG_NO_STDIO 250# ifndef PNG_NO_CONSOLE_IO 251# define PNG_NO_CONSOLE_IO 252# endif 253# ifdef PNG_DEBUG 254# if (PNG_DEBUG > 0) 255# include <stdio.h> 256# endif 257# endif 258# else 259# if !defined(_WIN32_WCE) 260/* "stdio.h" functions are not supported on WindowsCE */ 261# include <stdio.h> 262# endif 263# endif 264 265/* This macro protects us against machines that don't have function 266 * prototypes (ie K&R style headers). If your compiler does not handle 267 * function prototypes, define this macro and use the included ansi2knr. 268 * I've always been able to use _NO_PROTO as the indicator, but you may 269 * need to drag the empty declaration out in front of here, or change the 270 * ifdef to suit your own needs. 271 */ 272#ifndef PNGARG 273 274#ifdef OF /* zlib prototype munger */ 275# define PNGARG(arglist) OF(arglist) 276#else 277 278#ifdef _NO_PROTO 279# define PNGARG(arglist) () 280# ifndef PNG_TYPECAST_NULL 281# define PNG_TYPECAST_NULL 282# endif 283#else 284# define PNGARG(arglist) arglist 285#endif /* _NO_PROTO */ 286 287 288#endif /* OF */ 289 290#endif /* PNGARG */ 291 292/* Try to determine if we are compiling on a Mac. Note that testing for 293 * just __MWERKS__ is not good enough, because the Codewarrior is now used 294 * on non-Mac platforms. 295 */ 296#ifndef MACOS 297# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ 298 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) 299# define MACOS 300# endif 301#endif 302 303/* enough people need this for various reasons to include it here */ 304#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) 305# include <sys/types.h> 306#endif 307 308#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) 309# define PNG_SETJMP_SUPPORTED 310#endif 311 312#ifdef PNG_SETJMP_SUPPORTED 313/* This is an attempt to force a single setjmp behaviour on Linux. If 314 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. 315 */ 316 317# ifdef __linux__ 318# ifdef _BSD_SOURCE 319# define PNG_SAVE_BSD_SOURCE 320# undef _BSD_SOURCE 321# endif 322# ifdef _SETJMP_H 323 /* If you encounter a compiler error here, see the explanation 324 * near the end of INSTALL. 325 */ 326 __png.h__ already includes setjmp.h; 327 __dont__ include it again.; 328# endif 329# endif /* __linux__ */ 330 331 /* include setjmp.h for error handling */ 332# include <setjmp.h> 333 334# ifdef __linux__ 335# ifdef PNG_SAVE_BSD_SOURCE 336# define _BSD_SOURCE 337# undef PNG_SAVE_BSD_SOURCE 338# endif 339# endif /* __linux__ */ 340#endif /* PNG_SETJMP_SUPPORTED */ 341 342#ifdef BSD 343# include <strings.h> 344#else 345# include <string.h> 346#endif 347 348/* Other defines for things like memory and the like can go here. */ 349#ifdef PNG_INTERNAL 350 351#include <stdlib.h> 352 353/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which 354 * aren't usually used outside the library (as far as I know), so it is 355 * debatable if they should be exported at all. In the future, when it is 356 * possible to have run-time registry of chunk-handling functions, some of 357 * these will be made available again. 358#define PNG_EXTERN extern 359 */ 360#define PNG_EXTERN 361 362/* Other defines specific to compilers can go here. Try to keep 363 * them inside an appropriate ifdef/endif pair for portability. 364 */ 365 366#if defined(PNG_FLOATING_POINT_SUPPORTED) 367# if defined(MACOS) 368 /* We need to check that <math.h> hasn't already been included earlier 369 * as it seems it doesn't agree with <fp.h>, yet we should really use 370 * <fp.h> if possible. 371 */ 372# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) 373# include <fp.h> 374# endif 375# else 376# include <math.h> 377# endif 378# if defined(_AMIGA) && defined(__SASC) && defined(_M68881) 379 /* Amiga SAS/C: We must include builtin FPU functions when compiling using 380 * MATH=68881 381 */ 382# include <m68881.h> 383# endif 384#endif 385 386/* Codewarrior on NT has linking problems without this. */ 387#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) 388# define PNG_ALWAYS_EXTERN 389#endif 390 391/* This provides the non-ANSI (far) memory allocation routines. */ 392#if defined(__TURBOC__) && defined(__MSDOS__) 393# include <mem.h> 394# include <alloc.h> 395#endif 396 397/* I have no idea why is this necessary... */ 398#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ 399 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) 400# include <malloc.h> 401#endif 402 403/* This controls how fine the dithering gets. As this allocates 404 * a largish chunk of memory (32K), those who are not as concerned 405 * with dithering quality can decrease some or all of these. 406 */ 407#ifndef PNG_DITHER_RED_BITS 408# define PNG_DITHER_RED_BITS 5 409#endif 410#ifndef PNG_DITHER_GREEN_BITS 411# define PNG_DITHER_GREEN_BITS 5 412#endif 413#ifndef PNG_DITHER_BLUE_BITS 414# define PNG_DITHER_BLUE_BITS 5 415#endif 416 417/* This controls how fine the gamma correction becomes when you 418 * are only interested in 8 bits anyway. Increasing this value 419 * results in more memory being used, and more pow() functions 420 * being called to fill in the gamma tables. Don't set this value 421 * less then 8, and even that may not work (I haven't tested it). 422 */ 423 424#ifndef PNG_MAX_GAMMA_8 425# define PNG_MAX_GAMMA_8 11 426#endif 427 428/* This controls how much a difference in gamma we can tolerate before 429 * we actually start doing gamma conversion. 430 */ 431#ifndef PNG_GAMMA_THRESHOLD 432# define PNG_GAMMA_THRESHOLD 0.05 433#endif 434 435#endif /* PNG_INTERNAL */ 436 437/* The following uses const char * instead of char * for error 438 * and warning message functions, so some compilers won't complain. 439 * If you do not want to use const, define PNG_NO_CONST here. 440 */ 441 442#ifndef PNG_NO_CONST 443# define PNG_CONST const 444#else 445# define PNG_CONST 446#endif 447 448/* The following defines give you the ability to remove code from the 449 * library that you will not be using. I wish I could figure out how to 450 * automate this, but I can't do that without making it seriously hard 451 * on the users. So if you are not using an ability, change the #define 452 * to and #undef, and that part of the library will not be compiled. If 453 * your linker can't find a function, you may want to make sure the 454 * ability is defined here. Some of these depend upon some others being 455 * defined. I haven't figured out all the interactions here, so you may 456 * have to experiment awhile to get everything to compile. If you are 457 * creating or using a shared library, you probably shouldn't touch this, 458 * as it will affect the size of the structures, and this will cause bad 459 * things to happen if the library and/or application ever change. 460 */ 461 462/* Any features you will not be using can be undef'ed here */ 463 464/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user 465 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS 466 * on the compile line, then pick and choose which ones to define without 467 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED 468 * if you only want to have a png-compliant reader/writer but don't need 469 * any of the extra transformations. This saves about 80 kbytes in a 470 * typical installation of the library. (PNG_NO_* form added in version 471 * 1.0.1c, for consistency) 472 */ 473 474/* The size of the png_text structure changed in libpng-1.0.6 when 475 * iTXt support was added. iTXt support was turned off by default through 476 * libpng-1.2.x, to support old apps that malloc the png_text structure 477 * instead of calling png_set_text() and letting libpng malloc it. It 478 * was turned on by default in libpng-1.3.0. 479 */ 480 481#if defined(PNG_1_0_X) || defined (PNG_1_2_X) 482# ifndef PNG_NO_iTXt_SUPPORTED 483# define PNG_NO_iTXt_SUPPORTED 484# endif 485# ifndef PNG_NO_READ_iTXt 486# define PNG_NO_READ_iTXt 487# endif 488# ifndef PNG_NO_WRITE_iTXt 489# define PNG_NO_WRITE_iTXt 490# endif 491#endif 492 493#if !defined(PNG_NO_iTXt_SUPPORTED) 494# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) 495# define PNG_READ_iTXt 496# endif 497# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) 498# define PNG_WRITE_iTXt 499# endif 500#endif 501 502/* The following support, added after version 1.0.0, can be turned off here en 503 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility 504 * with old applications that require the length of png_struct and png_info 505 * to remain unchanged. 506 */ 507 508#ifdef PNG_LEGACY_SUPPORTED 509# define PNG_NO_FREE_ME 510# define PNG_NO_READ_UNKNOWN_CHUNKS 511# define PNG_NO_WRITE_UNKNOWN_CHUNKS 512# define PNG_NO_READ_USER_CHUNKS 513# define PNG_NO_READ_iCCP 514# define PNG_NO_WRITE_iCCP 515# define PNG_NO_READ_iTXt 516# define PNG_NO_WRITE_iTXt 517# define PNG_NO_READ_sCAL 518# define PNG_NO_WRITE_sCAL 519# define PNG_NO_READ_sPLT 520# define PNG_NO_WRITE_sPLT 521# define PNG_NO_INFO_IMAGE 522# define PNG_NO_READ_RGB_TO_GRAY 523# define PNG_NO_READ_USER_TRANSFORM 524# define PNG_NO_WRITE_USER_TRANSFORM 525# define PNG_NO_USER_MEM 526# define PNG_NO_READ_EMPTY_PLTE 527# define PNG_NO_MNG_FEATURES 528# define PNG_NO_FIXED_POINT_SUPPORTED 529#endif 530 531/* Ignore attempt to turn off both floating and fixed point support */ 532#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ 533 !defined(PNG_NO_FIXED_POINT_SUPPORTED) 534# define PNG_FIXED_POINT_SUPPORTED 535#endif 536 537#ifndef PNG_NO_FREE_ME 538# define PNG_FREE_ME_SUPPORTED 539#endif 540 541#if defined(PNG_READ_SUPPORTED) 542 543#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ 544 !defined(PNG_NO_READ_TRANSFORMS) 545# define PNG_READ_TRANSFORMS_SUPPORTED 546#endif 547 548#ifdef PNG_READ_TRANSFORMS_SUPPORTED 549# ifndef PNG_NO_READ_EXPAND 550# define PNG_READ_EXPAND_SUPPORTED 551# endif 552# ifndef PNG_NO_READ_SHIFT 553# define PNG_READ_SHIFT_SUPPORTED 554# endif 555# ifndef PNG_NO_READ_PACK 556# define PNG_READ_PACK_SUPPORTED 557# endif 558# ifndef PNG_NO_READ_BGR 559# define PNG_READ_BGR_SUPPORTED 560# endif 561# ifndef PNG_NO_READ_SWAP 562# define PNG_READ_SWAP_SUPPORTED 563# endif 564# ifndef PNG_NO_READ_PACKSWAP 565# define PNG_READ_PACKSWAP_SUPPORTED 566# endif 567# ifndef PNG_NO_READ_INVERT 568# define PNG_READ_INVERT_SUPPORTED 569# endif 570# ifndef PNG_NO_READ_DITHER 571# define PNG_READ_DITHER_SUPPORTED 572# endif 573# ifndef PNG_NO_READ_BACKGROUND 574# define PNG_READ_BACKGROUND_SUPPORTED 575# endif 576# ifndef PNG_NO_READ_16_TO_8 577# define PNG_READ_16_TO_8_SUPPORTED 578# endif 579# ifndef PNG_NO_READ_FILLER 580# define PNG_READ_FILLER_SUPPORTED 581# endif 582# ifndef PNG_NO_READ_GAMMA 583# define PNG_READ_GAMMA_SUPPORTED 584# endif 585# ifndef PNG_NO_READ_GRAY_TO_RGB 586# define PNG_READ_GRAY_TO_RGB_SUPPORTED 587# endif 588# ifndef PNG_NO_READ_SWAP_ALPHA 589# define PNG_READ_SWAP_ALPHA_SUPPORTED 590# endif 591# ifndef PNG_NO_READ_INVERT_ALPHA 592# define PNG_READ_INVERT_ALPHA_SUPPORTED 593# endif 594# ifndef PNG_NO_READ_STRIP_ALPHA 595# define PNG_READ_STRIP_ALPHA_SUPPORTED 596# endif 597# ifndef PNG_NO_READ_USER_TRANSFORM 598# define PNG_READ_USER_TRANSFORM_SUPPORTED 599# endif 600# ifndef PNG_NO_READ_RGB_TO_GRAY 601# define PNG_READ_RGB_TO_GRAY_SUPPORTED 602# endif 603#endif /* PNG_READ_TRANSFORMS_SUPPORTED */ 604 605#if !defined(PNG_NO_PROGRESSIVE_READ) && \ 606 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */ 607# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ 608#endif /* about interlacing capability! You'll */ 609 /* still have interlacing unless you change the following line: */ 610 611#define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */ 612 613#ifndef PNG_NO_READ_COMPOSITE_NODIV 614# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ 615# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ 616# endif 617#endif 618 619#if defined(PNG_1_0_X) || defined (PNG_1_2_X) 620/* Deprecated, will be removed from version 2.0.0. 621 Use PNG_MNG_FEATURES_SUPPORTED instead. */ 622#ifndef PNG_NO_READ_EMPTY_PLTE 623# define PNG_READ_EMPTY_PLTE_SUPPORTED 624#endif 625#endif 626 627#endif /* PNG_READ_SUPPORTED */ 628 629#if defined(PNG_WRITE_SUPPORTED) 630 631# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ 632 !defined(PNG_NO_WRITE_TRANSFORMS) 633# define PNG_WRITE_TRANSFORMS_SUPPORTED 634#endif 635 636#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED 637# ifndef PNG_NO_WRITE_SHIFT 638# define PNG_WRITE_SHIFT_SUPPORTED 639# endif 640# ifndef PNG_NO_WRITE_PACK 641# define PNG_WRITE_PACK_SUPPORTED 642# endif 643# ifndef PNG_NO_WRITE_BGR 644# define PNG_WRITE_BGR_SUPPORTED 645# endif 646# ifndef PNG_NO_WRITE_SWAP 647# define PNG_WRITE_SWAP_SUPPORTED 648# endif 649# ifndef PNG_NO_WRITE_PACKSWAP 650# define PNG_WRITE_PACKSWAP_SUPPORTED 651# endif 652# ifndef PNG_NO_WRITE_INVERT 653# define PNG_WRITE_INVERT_SUPPORTED 654# endif 655# ifndef PNG_NO_WRITE_FILLER 656# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ 657# endif 658# ifndef PNG_NO_WRITE_SWAP_ALPHA 659# define PNG_WRITE_SWAP_ALPHA_SUPPORTED 660# endif 661# ifndef PNG_NO_WRITE_INVERT_ALPHA 662# define PNG_WRITE_INVERT_ALPHA_SUPPORTED 663# endif 664# ifndef PNG_NO_WRITE_USER_TRANSFORM 665# define PNG_WRITE_USER_TRANSFORM_SUPPORTED 666# endif 667#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ 668 669#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \ 670 !defined(PNG_WRITE_INTERLACING_SUPPORTED) 671#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant 672 encoders, but can cause trouble 673 if left undefined */ 674#endif 675 676#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ 677 !defined(PNG_WRITE_WEIGHTED_FILTER) && \ 678 defined(PNG_FLOATING_POINT_SUPPORTED) 679# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED 680#endif 681 682#ifndef PNG_NO_WRITE_FLUSH 683# define PNG_WRITE_FLUSH_SUPPORTED 684#endif 685 686#if defined(PNG_1_0_X) || defined (PNG_1_2_X) 687/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ 688#ifndef PNG_NO_WRITE_EMPTY_PLTE 689# define PNG_WRITE_EMPTY_PLTE_SUPPORTED 690#endif 691#endif 692 693#endif /* PNG_WRITE_SUPPORTED */ 694 695#ifndef PNG_1_0_X 696# ifndef PNG_NO_ERROR_NUMBERS 697# define PNG_ERROR_NUMBERS_SUPPORTED 698# endif 699#endif /* PNG_1_0_X */ 700 701#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 702 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) 703# ifndef PNG_NO_USER_TRANSFORM_PTR 704# define PNG_USER_TRANSFORM_PTR_SUPPORTED 705# endif 706#endif 707 708#ifndef PNG_NO_STDIO 709# define PNG_TIME_RFC1123_SUPPORTED 710#endif 711 712/* This adds extra functions in pngget.c for accessing data from the 713 * info pointer (added in version 0.99) 714 * png_get_image_width() 715 * png_get_image_height() 716 * png_get_bit_depth() 717 * png_get_color_type() 718 * png_get_compression_type() 719 * png_get_filter_type() 720 * png_get_interlace_type() 721 * png_get_pixel_aspect_ratio() 722 * png_get_pixels_per_meter() 723 * png_get_x_offset_pixels() 724 * png_get_y_offset_pixels() 725 * png_get_x_offset_microns() 726 * png_get_y_offset_microns() 727 */ 728#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) 729# define PNG_EASY_ACCESS_SUPPORTED 730#endif 731 732/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 733 * even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined. 734 * 735 * PNG_NO_ASSEMBLER_CODE disables use of all assembler code, 736 * and removes several functions from the API. 737 * 738 * PNG_NO_MMX_CODE disables the use of MMX code without changing the API. 739 * When MMX code is off, then optimized C replacement functions are used, 740 * if PNG_NO_OPTIMIZED_CODE is not enabled. This was added in version 741 * 1.2.19. 742*/ 743 744#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE) 745# ifndef PNG_OPTIMIZED_CODE_SUPPORTED 746# define PNG_OPTIMIZED_CODE_SUPPORTED 747# endif 748#endif 749 750#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE) 751# ifndef PNG_ASSEMBLER_CODE_SUPPORTED 752# define PNG_ASSEMBLER_CODE_SUPPORTED 753# endif 754 755# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) 756# define PNG_MMX_CODE_SUPPORTED 757# endif 758 759# if !defined(PNG_USE_PNGVCRD) && defined(PNG_MMX_CODE_SUPPORTED) && \ 760 defined(_MSC_VER) 761# define PNG_USE_PNGVCRD 762# endif 763 764# if !defined(PNG_USE_PNGGCCRD) && defined(PNG_MMX_CODE_SUPPORTED) && \ 765 !defined(PNG_USE_PNGVCRD) 766# define PNG_USE_PNGGCCRD 767 /* If you are sure that you don't need thread safety and you are compiling 768 with PNG_USE_PNGCCRD for an MMX application, you can define this for 769 faster execution. See pnggccrd.c. 770# define PNG_THREAD_UNSAFE_OK 771 */ 772# endif 773 774#endif 775 776#if !defined(PNG_1_0_X) 777#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) 778# define PNG_USER_MEM_SUPPORTED 779#endif 780#endif /* PNG_1_0_X */ 781 782/* Added at libpng-1.2.6 */ 783#if !defined(PNG_1_0_X) 784#ifndef PNG_SET_USER_LIMITS_SUPPORTED 785#if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED) 786# define PNG_SET_USER_LIMITS_SUPPORTED 787#endif 788#endif 789#endif /* PNG_1_0_X */ 790 791/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter 792 * how large, set these limits to 0x7fffffffL 793 */ 794#ifndef PNG_USER_WIDTH_MAX 795# define PNG_USER_WIDTH_MAX 1000000L 796#endif 797#ifndef PNG_USER_HEIGHT_MAX 798# define PNG_USER_HEIGHT_MAX 1000000L 799#endif 800 801/* These are currently experimental features, define them if you want */ 802 803/* very little testing */ 804/* 805#ifdef PNG_READ_SUPPORTED 806# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 807# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 808# endif 809#endif 810*/ 811 812/* This is only for PowerPC big-endian and 680x0 systems */ 813/* some testing */ 814/* 815#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED 816# define PNG_READ_BIG_ENDIAN_SUPPORTED 817#endif 818*/ 819 820/* Buggy compilers (e.g., gcc 2.7.2.2) need this */ 821/* 822#define PNG_NO_POINTER_INDEXING 823*/ 824 825/* These functions are turned off by default, as they will be phased out. */ 826/* 827#define PNG_USELESS_TESTS_SUPPORTED 828#define PNG_CORRECT_PALETTE_SUPPORTED 829*/ 830 831/* Any chunks you are not interested in, you can undef here. The 832 * ones that allocate memory may be expecially important (hIST, 833 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info 834 * a bit smaller. 835 */ 836 837#if defined(PNG_READ_SUPPORTED) && \ 838 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 839 !defined(PNG_NO_READ_ANCILLARY_CHUNKS) 840# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 841#endif 842 843#if defined(PNG_WRITE_SUPPORTED) && \ 844 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ 845 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) 846# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 847#endif 848 849#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED 850 851#ifdef PNG_NO_READ_TEXT 852# define PNG_NO_READ_iTXt 853# define PNG_NO_READ_tEXt 854# define PNG_NO_READ_zTXt 855#endif 856#ifndef PNG_NO_READ_bKGD 857# define PNG_READ_bKGD_SUPPORTED 858# define PNG_bKGD_SUPPORTED 859#endif 860#ifndef PNG_NO_READ_cHRM 861# define PNG_READ_cHRM_SUPPORTED 862# define PNG_cHRM_SUPPORTED 863#endif 864#ifndef PNG_NO_READ_gAMA 865# define PNG_READ_gAMA_SUPPORTED 866# define PNG_gAMA_SUPPORTED 867#endif 868#ifndef PNG_NO_READ_hIST 869# define PNG_READ_hIST_SUPPORTED 870# define PNG_hIST_SUPPORTED 871#endif 872#ifndef PNG_NO_READ_iCCP 873# define PNG_READ_iCCP_SUPPORTED 874# define PNG_iCCP_SUPPORTED 875#endif 876#ifndef PNG_NO_READ_iTXt 877# ifndef PNG_READ_iTXt_SUPPORTED 878# define PNG_READ_iTXt_SUPPORTED 879# endif 880# ifndef PNG_iTXt_SUPPORTED 881# define PNG_iTXt_SUPPORTED 882# endif 883#endif 884#ifndef PNG_NO_READ_oFFs 885# define PNG_READ_oFFs_SUPPORTED 886# define PNG_oFFs_SUPPORTED 887#endif 888#ifndef PNG_NO_READ_pCAL 889# define PNG_READ_pCAL_SUPPORTED 890# define PNG_pCAL_SUPPORTED 891#endif 892#ifndef PNG_NO_READ_sCAL 893# define PNG_READ_sCAL_SUPPORTED 894# define PNG_sCAL_SUPPORTED 895#endif 896#ifndef PNG_NO_READ_pHYs 897# define PNG_READ_pHYs_SUPPORTED 898# define PNG_pHYs_SUPPORTED 899#endif 900#ifndef PNG_NO_READ_sBIT 901# define PNG_READ_sBIT_SUPPORTED 902# define PNG_sBIT_SUPPORTED 903#endif 904#ifndef PNG_NO_READ_sPLT 905# define PNG_READ_sPLT_SUPPORTED 906# define PNG_sPLT_SUPPORTED 907#endif 908#ifndef PNG_NO_READ_sRGB 909# define PNG_READ_sRGB_SUPPORTED 910# define PNG_sRGB_SUPPORTED 911#endif 912#ifndef PNG_NO_READ_tEXt 913# define PNG_READ_tEXt_SUPPORTED 914# define PNG_tEXt_SUPPORTED 915#endif 916#ifndef PNG_NO_READ_tIME 917# define PNG_READ_tIME_SUPPORTED 918# define PNG_tIME_SUPPORTED 919#endif 920#ifndef PNG_NO_READ_tRNS 921# define PNG_READ_tRNS_SUPPORTED 922# define PNG_tRNS_SUPPORTED 923#endif 924#ifndef PNG_NO_READ_zTXt 925# define PNG_READ_zTXt_SUPPORTED 926# define PNG_zTXt_SUPPORTED 927#endif 928#ifndef PNG_NO_READ_UNKNOWN_CHUNKS 929# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED 930# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 931# define PNG_UNKNOWN_CHUNKS_SUPPORTED 932# endif 933# ifndef PNG_NO_HANDLE_AS_UNKNOWN 934# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 935# endif 936#endif 937#if !defined(PNG_NO_READ_USER_CHUNKS) && \ 938 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) 939# define PNG_READ_USER_CHUNKS_SUPPORTED 940# define PNG_USER_CHUNKS_SUPPORTED 941# ifdef PNG_NO_READ_UNKNOWN_CHUNKS 942# undef PNG_NO_READ_UNKNOWN_CHUNKS 943# endif 944# ifdef PNG_NO_HANDLE_AS_UNKNOWN 945# undef PNG_NO_HANDLE_AS_UNKNOWN 946# endif 947#endif 948#ifndef PNG_NO_READ_OPT_PLTE 949# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ 950#endif /* optional PLTE chunk in RGB and RGBA images */ 951#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ 952 defined(PNG_READ_zTXt_SUPPORTED) 953# define PNG_READ_TEXT_SUPPORTED 954# define PNG_TEXT_SUPPORTED 955#endif 956 957#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ 958 959#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED 960 961#ifdef PNG_NO_WRITE_TEXT 962# define PNG_NO_WRITE_iTXt 963# define PNG_NO_WRITE_tEXt 964# define PNG_NO_WRITE_zTXt 965#endif 966#ifndef PNG_NO_WRITE_bKGD 967# define PNG_WRITE_bKGD_SUPPORTED 968# ifndef PNG_bKGD_SUPPORTED 969# define PNG_bKGD_SUPPORTED 970# endif 971#endif 972#ifndef PNG_NO_WRITE_cHRM 973# define PNG_WRITE_cHRM_SUPPORTED 974# ifndef PNG_cHRM_SUPPORTED 975# define PNG_cHRM_SUPPORTED 976# endif 977#endif 978#ifndef PNG_NO_WRITE_gAMA 979# define PNG_WRITE_gAMA_SUPPORTED 980# ifndef PNG_gAMA_SUPPORTED 981# define PNG_gAMA_SUPPORTED 982# endif 983#endif 984#ifndef PNG_NO_WRITE_hIST 985# define PNG_WRITE_hIST_SUPPORTED 986# ifndef PNG_hIST_SUPPORTED 987# define PNG_hIST_SUPPORTED 988# endif 989#endif 990#ifndef PNG_NO_WRITE_iCCP 991# define PNG_WRITE_iCCP_SUPPORTED 992# ifndef PNG_iCCP_SUPPORTED 993# define PNG_iCCP_SUPPORTED 994# endif 995#endif 996#ifndef PNG_NO_WRITE_iTXt 997# ifndef PNG_WRITE_iTXt_SUPPORTED 998# define PNG_WRITE_iTXt_SUPPORTED 999# endif 1000# ifndef PNG_iTXt_SUPPORTED 1001# define PNG_iTXt_SUPPORTED 1002# endif 1003#endif 1004#ifndef PNG_NO_WRITE_oFFs 1005# define PNG_WRITE_oFFs_SUPPORTED 1006# ifndef PNG_oFFs_SUPPORTED 1007# define PNG_oFFs_SUPPORTED 1008# endif 1009#endif 1010#ifndef PNG_NO_WRITE_pCAL 1011# define PNG_WRITE_pCAL_SUPPORTED 1012# ifndef PNG_pCAL_SUPPORTED 1013# define PNG_pCAL_SUPPORTED 1014# endif 1015#endif 1016#ifndef PNG_NO_WRITE_sCAL 1017# define PNG_WRITE_sCAL_SUPPORTED 1018# ifndef PNG_sCAL_SUPPORTED 1019# define PNG_sCAL_SUPPORTED 1020# endif 1021#endif 1022#ifndef PNG_NO_WRITE_pHYs 1023# define PNG_WRITE_pHYs_SUPPORTED 1024# ifndef PNG_pHYs_SUPPORTED 1025# define PNG_pHYs_SUPPORTED 1026# endif 1027#endif 1028#ifndef PNG_NO_WRITE_sBIT 1029# define PNG_WRITE_sBIT_SUPPORTED 1030# ifndef PNG_sBIT_SUPPORTED 1031# define PNG_sBIT_SUPPORTED 1032# endif 1033#endif 1034#ifndef PNG_NO_WRITE_sPLT 1035# define PNG_WRITE_sPLT_SUPPORTED 1036# ifndef PNG_sPLT_SUPPORTED 1037# define PNG_sPLT_SUPPORTED 1038# endif 1039#endif 1040#ifndef PNG_NO_WRITE_sRGB 1041# define PNG_WRITE_sRGB_SUPPORTED 1042# ifndef PNG_sRGB_SUPPORTED 1043# define PNG_sRGB_SUPPORTED 1044# endif 1045#endif 1046#ifndef PNG_NO_WRITE_tEXt 1047# define PNG_WRITE_tEXt_SUPPORTED 1048# ifndef PNG_tEXt_SUPPORTED 1049# define PNG_tEXt_SUPPORTED 1050# endif 1051#endif 1052#ifndef PNG_NO_WRITE_tIME 1053# define PNG_WRITE_tIME_SUPPORTED 1054# ifndef PNG_tIME_SUPPORTED 1055# define PNG_tIME_SUPPORTED 1056# endif 1057#endif 1058#ifndef PNG_NO_WRITE_tRNS 1059# define PNG_WRITE_tRNS_SUPPORTED 1060# ifndef PNG_tRNS_SUPPORTED 1061# define PNG_tRNS_SUPPORTED 1062# endif 1063#endif 1064#ifndef PNG_NO_WRITE_zTXt 1065# define PNG_WRITE_zTXt_SUPPORTED 1066# ifndef PNG_zTXt_SUPPORTED 1067# define PNG_zTXt_SUPPORTED 1068# endif 1069#endif 1070#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS 1071# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1072# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED 1073# define PNG_UNKNOWN_CHUNKS_SUPPORTED 1074# endif 1075# ifndef PNG_NO_HANDLE_AS_UNKNOWN 1076# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1077# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED 1078# endif 1079# endif 1080#endif 1081#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ 1082 defined(PNG_WRITE_zTXt_SUPPORTED) 1083# define PNG_WRITE_TEXT_SUPPORTED 1084# ifndef PNG_TEXT_SUPPORTED 1085# define PNG_TEXT_SUPPORTED 1086# endif 1087#endif 1088 1089#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ 1090 1091/* Turn this off to disable png_read_png() and 1092 * png_write_png() and leave the row_pointers member 1093 * out of the info structure. 1094 */ 1095#ifndef PNG_NO_INFO_IMAGE 1096# define PNG_INFO_IMAGE_SUPPORTED 1097#endif 1098 1099/* need the time information for reading tIME chunks */ 1100#if defined(PNG_tIME_SUPPORTED) 1101# if !defined(_WIN32_WCE) 1102 /* "time.h" functions are not supported on WindowsCE */ 1103# include <time.h> 1104# endif 1105#endif 1106 1107/* Some typedefs to get us started. These should be safe on most of the 1108 * common platforms. The typedefs should be at least as large as the 1109 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they 1110 * don't have to be exactly that size. Some compilers dislike passing 1111 * unsigned shorts as function parameters, so you may be better off using 1112 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may 1113 * want to have unsigned int for png_uint_32 instead of unsigned long. 1114 */ 1115 1116typedef unsigned long png_uint_32; 1117typedef long png_int_32; 1118typedef unsigned short png_uint_16; 1119typedef short png_int_16; 1120typedef unsigned char png_byte; 1121 1122/* This is usually size_t. It is typedef'ed just in case you need it to 1123 change (I'm not sure if you will or not, so I thought I'd be safe) */ 1124#ifdef PNG_SIZE_T 1125 typedef PNG_SIZE_T png_size_t; 1126# define png_sizeof(x) png_convert_size(sizeof (x)) 1127#else 1128 typedef size_t png_size_t; 1129# define png_sizeof(x) sizeof (x) 1130#endif 1131 1132/* The following is needed for medium model support. It cannot be in the 1133 * PNG_INTERNAL section. Needs modification for other compilers besides 1134 * MSC. Model independent support declares all arrays and pointers to be 1135 * large using the far keyword. The zlib version used must also support 1136 * model independent data. As of version zlib 1.0.4, the necessary changes 1137 * have been made in zlib. The USE_FAR_KEYWORD define triggers other 1138 * changes that are needed. (Tim Wegner) 1139 */ 1140 1141/* Separate compiler dependencies (problem here is that zlib.h always 1142 defines FAR. (SJT) */ 1143#ifdef __BORLANDC__ 1144# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) 1145# define LDATA 1 1146# else 1147# define LDATA 0 1148# endif 1149 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ 1150# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) 1151# define PNG_MAX_MALLOC_64K 1152# if (LDATA != 1) 1153# ifndef FAR 1154# define FAR __far 1155# endif 1156# define USE_FAR_KEYWORD 1157# endif /* LDATA != 1 */ 1158 /* Possibly useful for moving data out of default segment. 1159 * Uncomment it if you want. Could also define FARDATA as 1160 * const if your compiler supports it. (SJT) 1161# define FARDATA FAR 1162 */ 1163# endif /* __WIN32__, __FLAT__, __CYGWIN__ */ 1164#endif /* __BORLANDC__ */ 1165 1166 1167/* Suggest testing for specific compiler first before testing for 1168 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, 1169 * making reliance oncertain keywords suspect. (SJT) 1170 */ 1171 1172/* MSC Medium model */ 1173#if defined(FAR) 1174# if defined(M_I86MM) 1175# define USE_FAR_KEYWORD 1176# define FARDATA FAR 1177# include <dos.h> 1178# endif 1179#endif 1180 1181/* SJT: default case */ 1182#ifndef FAR 1183# define FAR 1184#endif 1185 1186/* At this point FAR is always defined */ 1187#ifndef FARDATA 1188# define FARDATA 1189#endif 1190 1191/* Typedef for floating-point numbers that are converted 1192 to fixed-point with a multiple of 100,000, e.g., int_gamma */ 1193typedef png_int_32 png_fixed_point; 1194 1195/* Add typedefs for pointers */ 1196typedef void FAR * png_voidp; 1197typedef png_byte FAR * png_bytep; 1198typedef png_uint_32 FAR * png_uint_32p; 1199typedef png_int_32 FAR * png_int_32p; 1200typedef png_uint_16 FAR * png_uint_16p; 1201typedef png_int_16 FAR * png_int_16p; 1202typedef PNG_CONST char FAR * png_const_charp; 1203typedef char FAR * png_charp; 1204typedef png_fixed_point FAR * png_fixed_point_p; 1205 1206#ifndef PNG_NO_STDIO 1207#if defined(_WIN32_WCE) 1208typedef HANDLE png_FILE_p; 1209#else 1210typedef FILE * png_FILE_p; 1211#endif 1212#endif 1213 1214#ifdef PNG_FLOATING_POINT_SUPPORTED 1215typedef double FAR * png_doublep; 1216#endif 1217 1218/* Pointers to pointers; i.e. arrays */ 1219typedef png_byte FAR * FAR * png_bytepp; 1220typedef png_uint_32 FAR * FAR * png_uint_32pp; 1221typedef png_int_32 FAR * FAR * png_int_32pp; 1222typedef png_uint_16 FAR * FAR * png_uint_16pp; 1223typedef png_int_16 FAR * FAR * png_int_16pp; 1224typedef PNG_CONST char FAR * FAR * png_const_charpp; 1225typedef char FAR * FAR * png_charpp; 1226typedef png_fixed_point FAR * FAR * png_fixed_point_pp; 1227#ifdef PNG_FLOATING_POINT_SUPPORTED 1228typedef double FAR * FAR * png_doublepp; 1229#endif 1230 1231/* Pointers to pointers to pointers; i.e., pointer to array */ 1232typedef char FAR * FAR * FAR * png_charppp; 1233 1234#if defined(PNG_1_0_X) || defined(PNG_1_2_X) 1235/* SPC - Is this stuff deprecated? */ 1236/* It'll be removed as of libpng-1.3.0 - GR-P */ 1237/* libpng typedefs for types in zlib. If zlib changes 1238 * or another compression library is used, then change these. 1239 * Eliminates need to change all the source files. 1240 */ 1241typedef charf * png_zcharp; 1242typedef charf * FAR * png_zcharpp; 1243typedef z_stream FAR * png_zstreamp; 1244#endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */ 1245 1246/* 1247 * Define PNG_BUILD_DLL if the module being built is a Windows 1248 * LIBPNG DLL. 1249 * 1250 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. 1251 * It is equivalent to Microsoft predefined macro _DLL that is 1252 * automatically defined when you compile using the share 1253 * version of the CRT (C Run-Time library) 1254 * 1255 * The cygwin mods make this behavior a little different: 1256 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin 1257 * Define PNG_STATIC if you are building a static library for use with cygwin, 1258 * -or- if you are building an application that you want to link to the 1259 * static library. 1260 * PNG_USE_DLL is defined by default (no user action needed) unless one of 1261 * the other flags is defined. 1262 */ 1263 1264#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) 1265# define PNG_DLL 1266#endif 1267/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. 1268 * When building a static lib, default to no GLOBAL ARRAYS, but allow 1269 * command-line override 1270 */ 1271#if defined(__CYGWIN__) 1272# if !defined(PNG_STATIC) 1273# if defined(PNG_USE_GLOBAL_ARRAYS) 1274# undef PNG_USE_GLOBAL_ARRAYS 1275# endif 1276# if !defined(PNG_USE_LOCAL_ARRAYS) 1277# define PNG_USE_LOCAL_ARRAYS 1278# endif 1279# else 1280# if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) 1281# if defined(PNG_USE_GLOBAL_ARRAYS) 1282# undef PNG_USE_GLOBAL_ARRAYS 1283# endif 1284# endif 1285# endif 1286# if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1287# define PNG_USE_LOCAL_ARRAYS 1288# endif 1289#endif 1290 1291/* Do not use global arrays (helps with building DLL's) 1292 * They are no longer used in libpng itself, since version 1.0.5c, 1293 * but might be required for some pre-1.0.5c applications. 1294 */ 1295#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) 1296# if defined(PNG_NO_GLOBAL_ARRAYS) || \ 1297 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER) 1298# define PNG_USE_LOCAL_ARRAYS 1299# else 1300# define PNG_USE_GLOBAL_ARRAYS 1301# endif 1302#endif 1303 1304#if defined(__CYGWIN__) 1305# undef PNGAPI 1306# define PNGAPI __cdecl 1307# undef PNG_IMPEXP 1308# define PNG_IMPEXP 1309#endif 1310 1311/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", 1312 * you may get warnings regarding the linkage of png_zalloc and png_zfree. 1313 * Don't ignore those warnings; you must also reset the default calling 1314 * convention in your compiler to match your PNGAPI, and you must build 1315 * zlib and your applications the same way you build libpng. 1316 */ 1317 1318#if defined(__MINGW32__) && !defined(PNG_MODULEDEF) 1319# ifndef PNG_NO_MODULEDEF 1320# define PNG_NO_MODULEDEF 1321# endif 1322#endif 1323 1324#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) 1325# define PNG_IMPEXP 1326#endif 1327 1328#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ 1329 (( defined(_Windows) || defined(_WINDOWS) || \ 1330 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) 1331 1332# ifndef PNGAPI 1333# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) 1334# define PNGAPI __cdecl 1335# else 1336# define PNGAPI _cdecl 1337# endif 1338# endif 1339 1340# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ 1341 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) 1342# define PNG_IMPEXP 1343# endif 1344 1345# if !defined(PNG_IMPEXP) 1346 1347# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol 1348# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol 1349 1350 /* Borland/Microsoft */ 1351# if defined(_MSC_VER) || defined(__BORLANDC__) 1352# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) 1353# define PNG_EXPORT PNG_EXPORT_TYPE1 1354# else 1355# define PNG_EXPORT PNG_EXPORT_TYPE2 1356# if defined(PNG_BUILD_DLL) 1357# define PNG_IMPEXP __export 1358# else 1359# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in 1360 VC++ */ 1361# endif /* Exists in Borland C++ for 1362 C++ classes (== huge) */ 1363# endif 1364# endif 1365 1366# if !defined(PNG_IMPEXP) 1367# if defined(PNG_BUILD_DLL) 1368# define PNG_IMPEXP __declspec(dllexport) 1369# else 1370# define PNG_IMPEXP __declspec(dllimport) 1371# endif 1372# endif 1373# endif /* PNG_IMPEXP */ 1374#else /* !(DLL || non-cygwin WINDOWS) */ 1375# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 1376# ifndef PNGAPI 1377# define PNGAPI _System 1378# endif 1379# else 1380# if 0 /* ... other platforms, with other meanings */ 1381# endif 1382# endif 1383#endif 1384 1385#ifndef PNGAPI 1386# define PNGAPI 1387#endif 1388#ifndef PNG_IMPEXP 1389# define PNG_IMPEXP 1390#endif 1391 1392#ifdef PNG_BUILDSYMS 1393# ifndef PNG_EXPORT 1394# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END 1395# endif 1396# ifdef PNG_USE_GLOBAL_ARRAYS 1397# ifndef PNG_EXPORT_VAR 1398# define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT 1399# endif 1400# endif 1401#endif 1402 1403#ifndef PNG_EXPORT 1404# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol 1405#endif 1406 1407#ifdef PNG_USE_GLOBAL_ARRAYS 1408# ifndef PNG_EXPORT_VAR 1409# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type 1410# endif 1411#endif 1412 1413/* User may want to use these so they are not in PNG_INTERNAL. Any library 1414 * functions that are passed far data must be model independent. 1415 */ 1416 1417#ifndef PNG_ABORT 1418# define PNG_ABORT() abort() 1419#endif 1420 1421#ifdef PNG_SETJMP_SUPPORTED 1422# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) 1423#else 1424# define png_jmpbuf(png_ptr) \ 1425 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) 1426#endif 1427 1428#if defined(USE_FAR_KEYWORD) /* memory model independent fns */ 1429/* use this to make far-to-near assignments */ 1430# define CHECK 1 1431# define NOCHECK 0 1432# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) 1433# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) 1434# define png_snprintf _fsnprintf /* Added to v 1.2.19 */ 1435# define png_strcpy _fstrcpy 1436# define png_strncpy _fstrncpy /* Added to v 1.2.6 */ 1437# define png_strlen _fstrlen 1438# define png_memcmp _fmemcmp /* SJT: added */ 1439# define png_memcpy _fmemcpy 1440# define png_memset _fmemset 1441#else /* use the usual functions */ 1442# define CVT_PTR(ptr) (ptr) 1443# define CVT_PTR_NOCHECK(ptr) (ptr) 1444# ifndef PNG_NO_SNPRINTF 1445# ifdef _MSC_VER 1446# define png_snprintf _snprintf /* Added to v 1.2.19 */ 1447# define png_snprintf2 _snprintf 1448# define png_snprintf6 _snprintf 1449# else 1450# define png_snprintf snprintf /* Added to v 1.2.19 */ 1451# define png_snprintf2 snprintf 1452# define png_snprintf6 snprintf 1453# endif 1454# else 1455 /* You don't have or don't want to use snprintf(). Caution: Using 1456 * sprintf instead of snprintf exposes your application to accidental 1457 * or malevolent buffer overflows. If you don't have snprintf() 1458 * as a general rule you should provide one (you can get one from 1459 * Portable OpenSSH). */ 1460# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1) 1461# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2) 1462# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \ 1463 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6) 1464# endif 1465# define png_strcpy strcpy 1466# define png_strncpy strncpy /* Added to v 1.2.6 */ 1467# define png_strlen strlen 1468# define png_memcmp memcmp /* SJT: added */ 1469# define png_memcpy memcpy 1470# define png_memset memset 1471#endif 1472/* End of memory model independent support */ 1473 1474/* Just a little check that someone hasn't tried to define something 1475 * contradictory. 1476 */ 1477#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) 1478# undef PNG_ZBUF_SIZE 1479# define PNG_ZBUF_SIZE 65536L 1480#endif 1481 1482#ifdef PNG_READ_SUPPORTED 1483/* Prior to libpng-1.0.9, this block was in pngasmrd.h */ 1484#if defined(PNG_INTERNAL) 1485 1486#if defined(PNG_USE_PNGGCCRD) || defined(PNG_USE_PNGVCRD) 1487 /* Platform must be Pentium. Makefile must assemble and load 1488 * pnggccrd.c or pngvcrd.c. MMX will be detected at run time and 1489 * used if present. 1490 */ 1491# ifndef PNG_NO_MMX_COMBINE_ROW 1492# define PNG_HAVE_MMX_COMBINE_ROW 1493# endif 1494# ifndef PNG_NO_MMX_READ_INTERLACE 1495# define PNG_HAVE_MMX_READ_INTERLACE 1496# endif 1497# ifndef PNG_NO_MMX_READ_FILTER_ROW 1498# define PNG_HAVE_MMX_READ_FILTER_ROW 1499# ifndef PNG_NO_MMX_FILTER_SUB 1500# define PNG_MMX_READ_FILTER_SUB_SUPPORTED 1501# endif 1502# if !(defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)) 1503 /* work around 64-bit gcc compiler bugs in gcc-3.x */ 1504# ifndef PNG_NO_MMX_FILTER_UP 1505# define PNG_MMX_READ_FILTER_UP_SUPPORTED 1506# endif 1507# ifndef PNG_NO_MMX_FILTER_AVG 1508# define PNG_MMX_READ_FILTER_AVG_SUPPORTED 1509# endif 1510# ifndef PNG_NO_MMX_FILTER_PAETH 1511# define PNG_MMX_READ_FILTER_PAETH_SUPPORTED 1512# endif 1513# endif /* !((__x86_64__) && (GNUC < 4)) */ 1514# endif 1515 /* These are the default thresholds before the MMX code kicks in; if either 1516 * rowbytes or bitdepth is below the threshold, plain C code is used. These 1517 * can be overridden at runtime via the png_set_mmx_thresholds() call in 1518 * libpng 1.2.0 and later. The values below were chosen by Intel. 1519 */ 1520# ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 1521# define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 128 /* >= */ 1522# endif 1523# ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 1524# define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 9 /* >= */ 1525# endif 1526#endif /* PNG_USE_PNGGCCRD || PNG_USE_PNGVCRD */ 1527/* - see pngvcrd.c or pnggccrd.c for info about what is currently enabled */ 1528 1529#endif /* PNG_INTERNAL */ 1530#endif /* PNG_READ_SUPPORTED */ 1531 1532/* Added at libpng-1.2.8 */ 1533#endif /* PNG_VERSION_INFO_ONLY */ 1534 1535#endif /* PNGCONF_H */ 1536