src/png/pngconf.h

   1
   2 /* pngconf.h - machine configurable file for libpng
   3  *
   4  * libpng version 1.2.34 - December 18, 2008
   5  * For conditions of distribution and use, see copyright notice in png.h
   6  * Copyright (c) 1998-2008 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 #ifdef __DMC__
  23 #define PNG_NO_SNPRINTF
  24 #endif
  25
  26 /*
  27  * PNG_USER_CONFIG has to be defined on the compiler command line. This
  28  * includes the resource compiler for Windows DLL configurations.
  29  */
  30 #ifdef PNG_USER_CONFIG
  31 #  ifndef PNG_USER_PRIVATEBUILD
  32 #    define PNG_USER_PRIVATEBUILD
  33 #  endif
  34 #include "pngusr.h"
  35 #endif
  36
  37 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
  38 #ifdef PNG_CONFIGURE_LIBPNG
  39 #ifdef HAVE_CONFIG_H
  40 #include "config.h"
  41 #endif
  42 #endif
  43
  44 /*
  45  * Added at libpng-1.2.8
  46  *
  47  * If you create a private DLL you need to define in "pngusr.h" the followings:
  48  * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
  49  *        the DLL was built>
  50  *  e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
  51  * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
  52  *        distinguish your DLL from those of the official release. These
  53  *        correspond to the trailing letters that come after the version
  54  *        number and must match your private DLL name>
  55  *  e.g. // private DLL "libpng13gx.dll"
  56  *       #define PNG_USER_DLLFNAME_POSTFIX "gx"
  57  *
  58  * The following macros are also at your disposal if you want to complete the
  59  * DLL VERSIONINFO structure.
  60  * - PNG_USER_VERSIONINFO_COMMENTS
  61  * - PNG_USER_VERSIONINFO_COMPANYNAME
  62  * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
  63  */
  64
  65 #ifdef __STDC__
  66 #ifdef SPECIALBUILD
  67 #  pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
  68  are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
  69 #endif
  70
  71 #ifdef PRIVATEBUILD
  72 # pragma message("PRIVATEBUILD is deprecated.\
  73  Use PNG_USER_PRIVATEBUILD instead.")
  74 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD
  75 #endif
  76 #endif /* __STDC__ */
  77
  78 #ifndef PNG_VERSION_INFO_ONLY
  79
  80 /* End of material added to libpng-1.2.8 */
  81
  82 /* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble
  83    Restored at libpng-1.2.21 */
  84 #if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \
  85     !defined(PNG_WARN_UNINITIALIZED_ROW)
  86 #  define PNG_WARN_UNINITIALIZED_ROW 1
  87 #endif
  88 /* End of material added at libpng-1.2.19/1.2.21 */
  89
  90 /* This is the size of the compression buffer, and thus the size of
  91  * an IDAT chunk.  Make this whatever size you feel is best for your
  92  * machine.  One of these will be allocated per png_struct.  When this
  93  * is full, it writes the data to the disk, and does some other
  94  * calculations.  Making this an extremely small size will slow
  95  * the library down, but you may want to experiment to determine
  96  * where it becomes significant, if you are concerned with memory
  97  * usage.  Note that zlib allocates at least 32Kb also.  For readers,
  98  * this describes the size of the buffer available to read the data in.
  99  * Unless this gets smaller than the size of a row (compressed),
 100  * it should not make much difference how big this is.
 101  */
 102
 103 #ifndef PNG_ZBUF_SIZE
 104 #  define PNG_ZBUF_SIZE 8192
 105 #endif
 106
 107 /* Enable if you want a write-only libpng */
 108
 109 #ifndef PNG_NO_READ_SUPPORTED
 110 #  define PNG_READ_SUPPORTED
 111 #endif
 112
 113 /* Enable if you want a read-only libpng */
 114
 115 #ifndef PNG_NO_WRITE_SUPPORTED
 116 #  define PNG_WRITE_SUPPORTED
 117 #endif
 118
 119 /* Enabled by default in 1.2.0.  You can disable this if you don't need to
 120    support PNGs that are embedded in MNG datastreams */
 121 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
 122 #  ifndef PNG_MNG_FEATURES_SUPPORTED
 123 #    define PNG_MNG_FEATURES_SUPPORTED
 124 #  endif
 125 #endif
 126
 127 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
 128 #  ifndef PNG_FLOATING_POINT_SUPPORTED
 129 #    define PNG_FLOATING_POINT_SUPPORTED
 130 #  endif
 131 #endif
 132
 133 /* If you are running on a machine where you cannot allocate more
 134  * than 64K of memory at once, uncomment this.  While libpng will not
 135  * normally need that much memory in a chunk (unless you load up a very
 136  * large file), zlib needs to know how big of a chunk it can use, and
 137  * libpng thus makes sure to check any memory allocation to verify it
 138  * will fit into memory.
 139 #define PNG_MAX_MALLOC_64K
 140  */
 141 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
 142 #  define PNG_MAX_MALLOC_64K
 143 #endif
 144
 145 /* Special munging to support doing things the 'cygwin' way:
 146  * 'Normal' png-on-win32 defines/defaults:
 147  *   PNG_BUILD_DLL -- building dll
 148  *   PNG_USE_DLL   -- building an application, linking to dll
 149  *   (no define)   -- building static library, or building an
 150  *                    application and linking to the static lib
 151  * 'Cygwin' defines/defaults:
 152  *   PNG_BUILD_DLL -- (ignored) building the dll
 153  *   (no define)   -- (ignored) building an application, linking to the dll
 154  *   PNG_STATIC    -- (ignored) building the static lib, or building an
 155  *                    application that links to the static lib.
 156  *   ALL_STATIC    -- (ignored) building various static libs, or building an
 157  *                    application that links to the static libs.
 158  * Thus,
 159  * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
 160  * this bit of #ifdefs will define the 'correct' config variables based on
 161  * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
 162  * unnecessary.
 163  *
 164  * Also, the precedence order is:
 165  *   ALL_STATIC (since we can't #undef something outside our namespace)
 166  *   PNG_BUILD_DLL
 167  *   PNG_STATIC
 168  *   (nothing) == PNG_USE_DLL
 169  *
 170  * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
 171  *   of auto-import in binutils, we no longer need to worry about
 172  *   __declspec(dllexport) / __declspec(dllimport) and friends.  Therefore,
 173  *   we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
 174  *   to __declspec() stuff.  However, we DO need to worry about
 175  *   PNG_BUILD_DLL and PNG_STATIC because those change some defaults
 176  *   such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
 177  */
 178 #if defined(__CYGWIN__)
 179 #  if defined(ALL_STATIC)
 180 #    if defined(PNG_BUILD_DLL)
 181 #      undef PNG_BUILD_DLL
 182 #    endif
 183 #    if defined(PNG_USE_DLL)
 184 #      undef PNG_USE_DLL
 185 #    endif
 186 #    if defined(PNG_DLL)
 187 #      undef PNG_DLL
 188 #    endif
 189 #    if !defined(PNG_STATIC)
 190 #      define PNG_STATIC
 191 #    endif
 192 #  else
 193 #    if defined (PNG_BUILD_DLL)
 194 #      if defined(PNG_STATIC)
 195 #        undef PNG_STATIC
 196 #      endif
 197 #      if defined(PNG_USE_DLL)
 198 #        undef PNG_USE_DLL
 199 #      endif
 200 #      if !defined(PNG_DLL)
 201 #        define PNG_DLL
 202 #      endif
 203 #    else
 204 #      if defined(PNG_STATIC)
 205 #        if defined(PNG_USE_DLL)
 206 #          undef PNG_USE_DLL
 207 #        endif
 208 #        if defined(PNG_DLL)
 209 #          undef PNG_DLL
 210 #        endif
 211 #      else
 212 #        if !defined(PNG_USE_DLL)
 213 #          define PNG_USE_DLL
 214 #        endif
 215 #        if !defined(PNG_DLL)
 216 #          define PNG_DLL
 217 #        endif
 218 #      endif
 219 #    endif
 220 #  endif
 221 #endif
 222
 223 /* This protects us against compilers that run on a windowing system
 224  * and thus don't have or would rather us not use the stdio types:
 225  * stdin, stdout, and stderr.  The only one currently used is stderr
 226  * in png_error() and png_warning().  #defining PNG_NO_CONSOLE_IO will
 227  * prevent these from being compiled and used. #defining PNG_NO_STDIO
 228  * will also prevent these, plus will prevent the entire set of stdio
 229  * macros and functions (FILE *, printf, etc.) from being compiled and used,
 230  * unless (PNG_DEBUG > 0) has been #defined.
 231  *
 232  * #define PNG_NO_CONSOLE_IO
 233  * #define PNG_NO_STDIO
 234  */
 235
 236 #if defined(_WIN32_WCE)
 237 #  include <windows.h>
 238    /* Console I/O functions are not supported on WindowsCE */
 239 #  define PNG_NO_CONSOLE_IO
 240 #  ifdef PNG_DEBUG
 241 #    undef PNG_DEBUG
 242 #  endif
 243 #endif
 244
 245 #ifdef PNG_BUILD_DLL
 246 #  ifndef PNG_CONSOLE_IO_SUPPORTED
 247 #    ifndef PNG_NO_CONSOLE_IO
 248 #      define PNG_NO_CONSOLE_IO
 249 #    endif
 250 #  endif
 251 #endif
 252
 253 #  ifdef PNG_NO_STDIO
 254 #    ifndef PNG_NO_CONSOLE_IO
 255 #      define PNG_NO_CONSOLE_IO
 256 #    endif
 257 #    ifdef PNG_DEBUG
 258 #      if (PNG_DEBUG > 0)
 259 #        include <stdio.h>
 260 #      endif
 261 #    endif
 262 #  else
 263 #    if !defined(_WIN32_WCE)
 264 /* "stdio.h" functions are not supported on WindowsCE */
 265 #      include <stdio.h>
 266 #    endif
 267 #  endif
 268
 269 /* This macro protects us against machines that don't have function
 270  * prototypes (ie K&R style headers).  If your compiler does not handle
 271  * function prototypes, define this macro and use the included ansi2knr.
 272  * I've always been able to use _NO_PROTO as the indicator, but you may
 273  * need to drag the empty declaration out in front of here, or change the
 274  * ifdef to suit your own needs.
 275  */
 276 #ifndef PNGARG
 277
 278 #ifdef OF /* zlib prototype munger */
 279 #  define PNGARG(arglist) OF(arglist)
 280 #else
 281
 282 #ifdef _NO_PROTO
 283 #  define PNGARG(arglist) ()
 284 #  ifndef PNG_TYPECAST_NULL
 285 #     define PNG_TYPECAST_NULL
 286 #  endif
 287 #else
 288 #  define PNGARG(arglist) arglist
 289 #endif /* _NO_PROTO */
 290
 291
 292 #endif /* OF */
 293
 294 #endif /* PNGARG */
 295
 296 /* Try to determine if we are compiling on a Mac.  Note that testing for
 297  * just __MWERKS__ is not good enough, because the Codewarrior is now used
 298  * on non-Mac platforms.
 299  */
 300 #ifndef MACOS
 301 #  if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
 302       defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
 303 #    define MACOS
 304 #  endif
 305 #endif
 306
 307 /* enough people need this for various reasons to include it here */
 308 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
 309 #  include <sys/types.h>
 310 #endif
 311
 312 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
 313 #  define PNG_SETJMP_SUPPORTED
 314 #endif
 315
 316 #ifdef PNG_SETJMP_SUPPORTED
 317 /* This is an attempt to force a single setjmp behaviour on Linux.  If
 318  * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
 319  */
 320
 321 #  ifdef __linux__
 322 #    ifdef _BSD_SOURCE
 323 #      define PNG_SAVE_BSD_SOURCE
 324 #      undef _BSD_SOURCE
 325 #    endif
 326 #    ifdef _SETJMP_H
 327      /* If you encounter a compiler error here, see the explanation
 328       * near the end of INSTALL.
 329       */
 330          __pngconf.h__ already includes setjmp.h;
 331          __dont__ include it again.;
 332 #    endif
 333 #  endif /* __linux__ */
 334
 335    /* include setjmp.h for error handling */
 336 #  include <setjmp.h>
 337
 338 #  ifdef __linux__
 339 #    ifdef PNG_SAVE_BSD_SOURCE
 340 #      ifndef _BSD_SOURCE
 341 #        define _BSD_SOURCE
 342 #      endif
 343 #      undef PNG_SAVE_BSD_SOURCE
 344 #    endif
 345 #  endif /* __linux__ */
 346 #endif /* PNG_SETJMP_SUPPORTED */
 347
 348 #ifdef BSD
 349 #  include <strings.h>
 350 #else
 351 #  include <string.h>
 352 #endif
 353
 354 /* Other defines for things like memory and the like can go here.  */
 355 #ifdef PNG_INTERNAL
 356
 357 #include <stdlib.h>
 358
 359 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
 360  * aren't usually used outside the library (as far as I know), so it is
 361  * debatable if they should be exported at all.  In the future, when it is
 362  * possible to have run-time registry of chunk-handling functions, some of
 363  * these will be made available again.
 364 #define PNG_EXTERN extern
 365  */
 366 #define PNG_EXTERN
 367
 368 /* Other defines specific to compilers can go here.  Try to keep
 369  * them inside an appropriate ifdef/endif pair for portability.
 370  */
 371
 372 #if defined(PNG_FLOATING_POINT_SUPPORTED)
 373 #  if defined(MACOS) && !wxOSX_USE_IPHONE
 374      /* We need to check that <math.h> hasn't already been included earlier
 375       * as it seems it doesn't agree with <fp.h>, yet we should really use
 376       * <fp.h> if possible.
 377       */
 378 #    if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
 379 #      include <fp.h>
 380 #    endif
 381 #  else
 382 #    include <math.h>
 383 #  endif
 384 #  if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
 385      /* Amiga SAS/C: We must include builtin FPU functions when compiling using
 386       * MATH=68881
 387       */
 388 #    include <m68881.h>
 389 #  endif
 390 #endif
 391
 392 /* Codewarrior on NT has linking problems without this. */
 393 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
 394 #  define PNG_ALWAYS_EXTERN
 395 #endif
 396
 397 /* This provides the non-ANSI (far) memory allocation routines. */
 398 #if defined(__TURBOC__) && defined(__MSDOS__)
 399 #  include <mem.h>
 400 #  include <alloc.h>
 401 #endif
 402
 403 /* I have no idea why is this necessary... */
 404 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
 405     defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
 406 #  include <malloc.h>
 407 #endif
 408
 409 /* This controls how fine the dithering gets.  As this allocates
 410  * a largish chunk of memory (32K), those who are not as concerned
 411  * with dithering quality can decrease some or all of these.
 412  */
 413 #ifndef PNG_DITHER_RED_BITS
 414 #  define PNG_DITHER_RED_BITS 5
 415 #endif
 416 #ifndef PNG_DITHER_GREEN_BITS
 417 #  define PNG_DITHER_GREEN_BITS 5
 418 #endif
 419 #ifndef PNG_DITHER_BLUE_BITS
 420 #  define PNG_DITHER_BLUE_BITS 5
 421 #endif
 422
 423 /* This controls how fine the gamma correction becomes when you
 424  * are only interested in 8 bits anyway.  Increasing this value
 425  * results in more memory being used, and more pow() functions
 426  * being called to fill in the gamma tables.  Don't set this value
 427  * less then 8, and even that may not work (I haven't tested it).
 428  */
 429
 430 #ifndef PNG_MAX_GAMMA_8
 431 #  define PNG_MAX_GAMMA_8 11
 432 #endif
 433
 434 /* This controls how much a difference in gamma we can tolerate before
 435  * we actually start doing gamma conversion.
 436  */
 437 #ifndef PNG_GAMMA_THRESHOLD
 438 #  define PNG_GAMMA_THRESHOLD 0.05
 439 #endif
 440
 441 #endif /* PNG_INTERNAL */
 442
 443 /* The following uses const char * instead of char * for error
 444  * and warning message functions, so some compilers won't complain.
 445  * If you do not want to use const, define PNG_NO_CONST here.
 446  */
 447
 448 #ifndef PNG_NO_CONST
 449 #  define PNG_CONST const
 450 #else
 451 #  define PNG_CONST
 452 #endif
 453
 454 /* The following defines give you the ability to remove code from the
 455  * library that you will not be using.  I wish I could figure out how to
 456  * automate this, but I can't do that without making it seriously hard
 457  * on the users.  So if you are not using an ability, change the #define
 458  * to and #undef, and that part of the library will not be compiled.  If
 459  * your linker can't find a function, you may want to make sure the
 460  * ability is defined here.  Some of these depend upon some others being
 461  * defined.  I haven't figured out all the interactions here, so you may
 462  * have to experiment awhile to get everything to compile.  If you are
 463  * creating or using a shared library, you probably shouldn't touch this,
 464  * as it will affect the size of the structures, and this will cause bad
 465  * things to happen if the library and/or application ever change.
 466  */
 467
 468 /* Any features you will not be using can be undef'ed here */
 469
 470 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
 471  * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
 472  * on the compile line, then pick and choose which ones to define without
 473  * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
 474  * if you only want to have a png-compliant reader/writer but don't need
 475  * any of the extra transformations.  This saves about 80 kbytes in a
 476  * typical installation of the library. (PNG_NO_* form added in version
 477  * 1.0.1c, for consistency)
 478  */
 479
 480 /* The size of the png_text structure changed in libpng-1.0.6 when
 481  * iTXt support was added.  iTXt support was turned off by default through
 482  * libpng-1.2.x, to support old apps that malloc the png_text structure
 483  * instead of calling png_set_text() and letting libpng malloc it.  It
 484  * was turned on by default in libpng-1.3.0.
 485  */
 486
 487 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
 488 #  ifndef PNG_NO_iTXt_SUPPORTED
 489 #    define PNG_NO_iTXt_SUPPORTED
 490 #  endif
 491 #  ifndef PNG_NO_READ_iTXt
 492 #    define PNG_NO_READ_iTXt
 493 #  endif
 494 #  ifndef PNG_NO_WRITE_iTXt
 495 #    define PNG_NO_WRITE_iTXt
 496 #  endif
 497 #endif
 498
 499 #if !defined(PNG_NO_iTXt_SUPPORTED)
 500 #  if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
 501 #    define PNG_READ_iTXt
 502 #  endif
 503 #  if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
 504 #    define PNG_WRITE_iTXt
 505 #  endif
 506 #endif
 507
 508 /* The following support, added after version 1.0.0, can be turned off here en
 509  * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
 510  * with old applications that require the length of png_struct and png_info
 511  * to remain unchanged.
 512  */
 513
 514 #ifdef PNG_LEGACY_SUPPORTED
 515 #  define PNG_NO_FREE_ME
 516 #  define PNG_NO_READ_UNKNOWN_CHUNKS
 517 #  define PNG_NO_WRITE_UNKNOWN_CHUNKS
 518 #  define PNG_NO_READ_USER_CHUNKS
 519 #  define PNG_NO_READ_iCCP
 520 #  define PNG_NO_WRITE_iCCP
 521 #  define PNG_NO_READ_iTXt
 522 #  define PNG_NO_WRITE_iTXt
 523 #  define PNG_NO_READ_sCAL
 524 #  define PNG_NO_WRITE_sCAL
 525 #  define PNG_NO_READ_sPLT
 526 #  define PNG_NO_WRITE_sPLT
 527 #  define PNG_NO_INFO_IMAGE
 528 #  define PNG_NO_READ_RGB_TO_GRAY
 529 #  define PNG_NO_READ_USER_TRANSFORM
 530 #  define PNG_NO_WRITE_USER_TRANSFORM
 531 #  define PNG_NO_USER_MEM
 532 #  define PNG_NO_READ_EMPTY_PLTE
 533 #  define PNG_NO_MNG_FEATURES
 534 #  define PNG_NO_FIXED_POINT_SUPPORTED
 535 #endif
 536
 537 /* Ignore attempt to turn off both floating and fixed point support */
 538 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
 539     !defined(PNG_NO_FIXED_POINT_SUPPORTED)
 540 #  define PNG_FIXED_POINT_SUPPORTED
 541 #endif
 542
 543 #ifndef PNG_NO_FREE_ME
 544 #  define PNG_FREE_ME_SUPPORTED
 545 #endif
 546
 547 #if defined(PNG_READ_SUPPORTED)
 548
 549 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
 550       !defined(PNG_NO_READ_TRANSFORMS)
 551 #  define PNG_READ_TRANSFORMS_SUPPORTED
 552 #endif
 553
 554 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
 555 #  ifndef PNG_NO_READ_EXPAND
 556 #    define PNG_READ_EXPAND_SUPPORTED
 557 #  endif
 558 #  ifndef PNG_NO_READ_SHIFT
 559 #    define PNG_READ_SHIFT_SUPPORTED
 560 #  endif
 561 #  ifndef PNG_NO_READ_PACK
 562 #    define PNG_READ_PACK_SUPPORTED
 563 #  endif
 564 #  ifndef PNG_NO_READ_BGR
 565 #    define PNG_READ_BGR_SUPPORTED
 566 #  endif
 567 #  ifndef PNG_NO_READ_SWAP
 568 #    define PNG_READ_SWAP_SUPPORTED
 569 #  endif
 570 #  ifndef PNG_NO_READ_PACKSWAP
 571 #    define PNG_READ_PACKSWAP_SUPPORTED
 572 #  endif
 573 #  ifndef PNG_NO_READ_INVERT
 574 #    define PNG_READ_INVERT_SUPPORTED
 575 #  endif
 576 #  ifndef PNG_NO_READ_DITHER
 577 #    define PNG_READ_DITHER_SUPPORTED
 578 #  endif
 579 #  ifndef PNG_NO_READ_BACKGROUND
 580 #    define PNG_READ_BACKGROUND_SUPPORTED
 581 #  endif
 582 #  ifndef PNG_NO_READ_16_TO_8
 583 #    define PNG_READ_16_TO_8_SUPPORTED
 584 #  endif
 585 #  ifndef PNG_NO_READ_FILLER
 586 #    define PNG_READ_FILLER_SUPPORTED
 587 #  endif
 588 #  ifndef PNG_NO_READ_GAMMA
 589 #    define PNG_READ_GAMMA_SUPPORTED
 590 #  endif
 591 #  ifndef PNG_NO_READ_GRAY_TO_RGB
 592 #    define PNG_READ_GRAY_TO_RGB_SUPPORTED
 593 #  endif
 594 #  ifndef PNG_NO_READ_SWAP_ALPHA
 595 #    define PNG_READ_SWAP_ALPHA_SUPPORTED
 596 #  endif
 597 #  ifndef PNG_NO_READ_INVERT_ALPHA
 598 #    define PNG_READ_INVERT_ALPHA_SUPPORTED
 599 #  endif
 600 #  ifndef PNG_NO_READ_STRIP_ALPHA
 601 #    define PNG_READ_STRIP_ALPHA_SUPPORTED
 602 #  endif
 603 #  ifndef PNG_NO_READ_USER_TRANSFORM
 604 #    define PNG_READ_USER_TRANSFORM_SUPPORTED
 605 #  endif
 606 #  ifndef PNG_NO_READ_RGB_TO_GRAY
 607 #    define PNG_READ_RGB_TO_GRAY_SUPPORTED
 608 #  endif
 609 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
 610
 611 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
 612  !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive   */
 613 #  define PNG_PROGRESSIVE_READ_SUPPORTED  /* reading.  This is not talking */
 614 #endif                            /* about interlacing capability!  You'll */
 615            /* still have interlacing unless you change the following line: */
 616
 617 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
 618
 619 #ifndef PNG_NO_READ_COMPOSITE_NODIV
 620 #  ifndef PNG_NO_READ_COMPOSITED_NODIV  /* libpng-1.0.x misspelling */
 621 #    define PNG_READ_COMPOSITE_NODIV_SUPPORTED  /* well tested on Intel, SGI */
 622 #  endif
 623 #endif
 624
 625 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
 626 /* Deprecated, will be removed from version 2.0.0.
 627    Use PNG_MNG_FEATURES_SUPPORTED instead. */
 628 #ifndef PNG_NO_READ_EMPTY_PLTE
 629 #  define PNG_READ_EMPTY_PLTE_SUPPORTED
 630 #endif
 631 #endif
 632
 633 #endif /* PNG_READ_SUPPORTED */
 634
 635 #if defined(PNG_WRITE_SUPPORTED)
 636
 637 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
 638     !defined(PNG_NO_WRITE_TRANSFORMS)
 639 #  define PNG_WRITE_TRANSFORMS_SUPPORTED
 640 #endif
 641
 642 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
 643 #  ifndef PNG_NO_WRITE_SHIFT
 644 #    define PNG_WRITE_SHIFT_SUPPORTED
 645 #  endif
 646 #  ifndef PNG_NO_WRITE_PACK
 647 #    define PNG_WRITE_PACK_SUPPORTED
 648 #  endif
 649 #  ifndef PNG_NO_WRITE_BGR
 650 #    define PNG_WRITE_BGR_SUPPORTED
 651 #  endif
 652 #  ifndef PNG_NO_WRITE_SWAP
 653 #    define PNG_WRITE_SWAP_SUPPORTED
 654 #  endif
 655 #  ifndef PNG_NO_WRITE_PACKSWAP
 656 #    define PNG_WRITE_PACKSWAP_SUPPORTED
 657 #  endif
 658 #  ifndef PNG_NO_WRITE_INVERT
 659 #    define PNG_WRITE_INVERT_SUPPORTED
 660 #  endif
 661 #  ifndef PNG_NO_WRITE_FILLER
 662 #    define PNG_WRITE_FILLER_SUPPORTED   /* same as WRITE_STRIP_ALPHA */
 663 #  endif
 664 #  ifndef PNG_NO_WRITE_SWAP_ALPHA
 665 #    define PNG_WRITE_SWAP_ALPHA_SUPPORTED
 666 #  endif
 667 #  ifndef PNG_NO_WRITE_INVERT_ALPHA
 668 #    define PNG_WRITE_INVERT_ALPHA_SUPPORTED
 669 #  endif
 670 #  ifndef PNG_NO_WRITE_USER_TRANSFORM
 671 #    define PNG_WRITE_USER_TRANSFORM_SUPPORTED
 672 #  endif
 673 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
 674
 675 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
 676     !defined(PNG_WRITE_INTERLACING_SUPPORTED)
 677 #define PNG_WRITE_INTERLACING_SUPPORTED  /* not required for PNG-compliant
 678                                             encoders, but can cause trouble
 679                                             if left undefined */
 680 #endif
 681
 682 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
 683     !defined(PNG_WRITE_WEIGHTED_FILTER) && \
 684      defined(PNG_FLOATING_POINT_SUPPORTED)
 685 #  define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
 686 #endif
 687
 688 #ifndef PNG_NO_WRITE_FLUSH
 689 #  define PNG_WRITE_FLUSH_SUPPORTED
 690 #endif
 691
 692 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
 693 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
 694 #ifndef PNG_NO_WRITE_EMPTY_PLTE
 695 #  define PNG_WRITE_EMPTY_PLTE_SUPPORTED
 696 #endif
 697 #endif
 698
 699 #endif /* PNG_WRITE_SUPPORTED */
 700
 701 #ifndef PNG_1_0_X
 702 #  ifndef PNG_NO_ERROR_NUMBERS
 703 #    define PNG_ERROR_NUMBERS_SUPPORTED
 704 #  endif
 705 #endif /* PNG_1_0_X */
 706
 707 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
 708     defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
 709 #  ifndef PNG_NO_USER_TRANSFORM_PTR
 710 #    define PNG_USER_TRANSFORM_PTR_SUPPORTED
 711 #  endif
 712 #endif
 713
 714 #ifndef PNG_NO_STDIO
 715 #  define PNG_TIME_RFC1123_SUPPORTED
 716 #endif
 717
 718 /* This adds extra functions in pngget.c for accessing data from the
 719  * info pointer (added in version 0.99)
 720  * png_get_image_width()
 721  * png_get_image_height()
 722  * png_get_bit_depth()
 723  * png_get_color_type()
 724  * png_get_compression_type()
 725  * png_get_filter_type()
 726  * png_get_interlace_type()
 727  * png_get_pixel_aspect_ratio()
 728  * png_get_pixels_per_meter()
 729  * png_get_x_offset_pixels()
 730  * png_get_y_offset_pixels()
 731  * png_get_x_offset_microns()
 732  * png_get_y_offset_microns()
 733  */
 734 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
 735 #  define PNG_EASY_ACCESS_SUPPORTED
 736 #endif
 737
 738 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
 739  * and removed from version 1.2.20.  The following will be removed
 740  * from libpng-1.4.0
 741 */
 742
 743 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
 744 #  ifndef PNG_OPTIMIZED_CODE_SUPPORTED
 745 #    define PNG_OPTIMIZED_CODE_SUPPORTED
 746 #  endif
 747 #endif
 748
 749 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
 750 #  ifndef PNG_ASSEMBLER_CODE_SUPPORTED
 751 #    define PNG_ASSEMBLER_CODE_SUPPORTED
 752 #  endif
 753
 754 #  if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
 755      /* work around 64-bit gcc compiler bugs in gcc-3.x */
 756 #    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
 757 #      define PNG_NO_MMX_CODE
 758 #    endif
 759 #  endif
 760
 761 #  if defined(__APPLE__)
 762 #    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
 763 #      define PNG_NO_MMX_CODE
 764 #    endif
 765 #  endif
 766
 767 #  if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
 768 #    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
 769 #      define PNG_NO_MMX_CODE
 770 #    endif
 771 #  endif
 772
 773 #  if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
 774 #    define PNG_MMX_CODE_SUPPORTED
 775 #  endif
 776
 777 #endif
 778 /* end of obsolete code to be removed from libpng-1.4.0 */
 779
 780 #if !defined(PNG_1_0_X)
 781 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
 782 #  define PNG_USER_MEM_SUPPORTED
 783 #endif
 784 #endif /* PNG_1_0_X */
 785
 786 /* Added at libpng-1.2.6 */
 787 #if !defined(PNG_1_0_X)
 788 #ifndef PNG_SET_USER_LIMITS_SUPPORTED
 789 #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
 790 #  define PNG_SET_USER_LIMITS_SUPPORTED
 791 #endif
 792 #endif
 793 #endif /* PNG_1_0_X */
 794
 795 /* Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGS no matter
 796  * how large, set these limits to 0x7fffffffL
 797  */
 798 #ifndef PNG_USER_WIDTH_MAX
 799 #  define PNG_USER_WIDTH_MAX 1000000L
 800 #endif
 801 #ifndef PNG_USER_HEIGHT_MAX
 802 #  define PNG_USER_HEIGHT_MAX 1000000L
 803 #endif
 804
 805
 806 /* Added at libpng-1.2.34 and 1.4.0 */
 807 #ifndef PNG_STRING_NEWLINE
 808 #define PNG_STRING_NEWLINE "\n"
 809 #endif
 810
 811 /* These are currently experimental features, define them if you want */
 812
 813 /* very little testing */
 814 /*
 815 #ifdef PNG_READ_SUPPORTED
 816 #  ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
 817 #    define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
 818 #  endif
 819 #endif
 820 */
 821
 822 /* This is only for PowerPC big-endian and 680x0 systems */
 823 /* some testing */
 824 /*
 825 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
 826 #  define PNG_READ_BIG_ENDIAN_SUPPORTED
 827 #endif
 828 */
 829
 830 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */
 831 /*
 832 #define PNG_NO_POINTER_INDEXING
 833 */
 834
 835 /* These functions are turned off by default, as they will be phased out. */
 836 /*
 837 #define  PNG_USELESS_TESTS_SUPPORTED
 838 #define  PNG_CORRECT_PALETTE_SUPPORTED
 839 */
 840
 841 /* Any chunks you are not interested in, you can undef here.  The
 842  * ones that allocate memory may be expecially important (hIST,
 843  * tEXt, zTXt, tRNS, pCAL).  Others will just save time and make png_info
 844  * a bit smaller.
 845  */
 846
 847 #if defined(PNG_READ_SUPPORTED) && \
 848     !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
 849     !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
 850 #  define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
 851 #endif
 852
 853 #if defined(PNG_WRITE_SUPPORTED) && \
 854     !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
 855     !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
 856 #  define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
 857 #endif
 858
 859 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
 860
 861 #ifdef PNG_NO_READ_TEXT
 862 #  define PNG_NO_READ_iTXt
 863 #  define PNG_NO_READ_tEXt
 864 #  define PNG_NO_READ_zTXt
 865 #endif
 866 #ifndef PNG_NO_READ_bKGD
 867 #  define PNG_READ_bKGD_SUPPORTED
 868 #  define PNG_bKGD_SUPPORTED
 869 #endif
 870 #ifndef PNG_NO_READ_cHRM
 871 #  define PNG_READ_cHRM_SUPPORTED
 872 #  define PNG_cHRM_SUPPORTED
 873 #endif
 874 #ifndef PNG_NO_READ_gAMA
 875 #  define PNG_READ_gAMA_SUPPORTED
 876 #  define PNG_gAMA_SUPPORTED
 877 #endif
 878 #ifndef PNG_NO_READ_hIST
 879 #  define PNG_READ_hIST_SUPPORTED
 880 #  define PNG_hIST_SUPPORTED
 881 #endif
 882 #ifndef PNG_NO_READ_iCCP
 883 #  define PNG_READ_iCCP_SUPPORTED
 884 #  define PNG_iCCP_SUPPORTED
 885 #endif
 886 #ifndef PNG_NO_READ_iTXt
 887 #  ifndef PNG_READ_iTXt_SUPPORTED
 888 #    define PNG_READ_iTXt_SUPPORTED
 889 #  endif
 890 #  ifndef PNG_iTXt_SUPPORTED
 891 #    define PNG_iTXt_SUPPORTED
 892 #  endif
 893 #endif
 894 #ifndef PNG_NO_READ_oFFs
 895 #  define PNG_READ_oFFs_SUPPORTED
 896 #  define PNG_oFFs_SUPPORTED
 897 #endif
 898 #ifndef PNG_NO_READ_pCAL
 899 #  define PNG_READ_pCAL_SUPPORTED
 900 #  define PNG_pCAL_SUPPORTED
 901 #endif
 902 #ifndef PNG_NO_READ_sCAL
 903 #  define PNG_READ_sCAL_SUPPORTED
 904 #  define PNG_sCAL_SUPPORTED
 905 #endif
 906 #ifndef PNG_NO_READ_pHYs
 907 #  define PNG_READ_pHYs_SUPPORTED
 908 #  define PNG_pHYs_SUPPORTED
 909 #endif
 910 #ifndef PNG_NO_READ_sBIT
 911 #  define PNG_READ_sBIT_SUPPORTED
 912 #  define PNG_sBIT_SUPPORTED
 913 #endif
 914 #ifndef PNG_NO_READ_sPLT
 915 #  define PNG_READ_sPLT_SUPPORTED
 916 #  define PNG_sPLT_SUPPORTED
 917 #endif
 918 #ifndef PNG_NO_READ_sRGB
 919 #  define PNG_READ_sRGB_SUPPORTED
 920 #  define PNG_sRGB_SUPPORTED
 921 #endif
 922 #ifndef PNG_NO_READ_tEXt
 923 #  define PNG_READ_tEXt_SUPPORTED
 924 #  define PNG_tEXt_SUPPORTED
 925 #endif
 926 #ifndef PNG_NO_READ_tIME
 927 #  define PNG_READ_tIME_SUPPORTED
 928 #  define PNG_tIME_SUPPORTED
 929 #endif
 930 #ifndef PNG_NO_READ_tRNS
 931 #  define PNG_READ_tRNS_SUPPORTED
 932 #  define PNG_tRNS_SUPPORTED
 933 #endif
 934 #ifndef PNG_NO_READ_zTXt
 935 #  define PNG_READ_zTXt_SUPPORTED
 936 #  define PNG_zTXt_SUPPORTED
 937 #endif
 938 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
 939 #  define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
 940 #  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
 941 #    define PNG_UNKNOWN_CHUNKS_SUPPORTED
 942 #  endif
 943 #  ifndef PNG_NO_HANDLE_AS_UNKNOWN
 944 #    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
 945 #  endif
 946 #endif
 947 #if !defined(PNG_NO_READ_USER_CHUNKS) && \
 948      defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
 949 #  define PNG_READ_USER_CHUNKS_SUPPORTED
 950 #  define PNG_USER_CHUNKS_SUPPORTED
 951 #  ifdef PNG_NO_READ_UNKNOWN_CHUNKS
 952 #    undef PNG_NO_READ_UNKNOWN_CHUNKS
 953 #  endif
 954 #  ifdef PNG_NO_HANDLE_AS_UNKNOWN
 955 #    undef PNG_NO_HANDLE_AS_UNKNOWN
 956 #  endif
 957 #endif
 958 #ifndef PNG_NO_READ_OPT_PLTE
 959 #  define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
 960 #endif                      /* optional PLTE chunk in RGB and RGBA images */
 961 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
 962     defined(PNG_READ_zTXt_SUPPORTED)
 963 #  define PNG_READ_TEXT_SUPPORTED
 964 #  define PNG_TEXT_SUPPORTED
 965 #endif
 966
 967 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
 968
 969 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
 970
 971 #ifdef PNG_NO_WRITE_TEXT
 972 #  define PNG_NO_WRITE_iTXt
 973 #  define PNG_NO_WRITE_tEXt
 974 #  define PNG_NO_WRITE_zTXt
 975 #endif
 976 #ifndef PNG_NO_WRITE_bKGD
 977 #  define PNG_WRITE_bKGD_SUPPORTED
 978 #  ifndef PNG_bKGD_SUPPORTED
 979 #    define PNG_bKGD_SUPPORTED
 980 #  endif
 981 #endif
 982 #ifndef PNG_NO_WRITE_cHRM
 983 #  define PNG_WRITE_cHRM_SUPPORTED
 984 #  ifndef PNG_cHRM_SUPPORTED
 985 #    define PNG_cHRM_SUPPORTED
 986 #  endif
 987 #endif
 988 #ifndef PNG_NO_WRITE_gAMA
 989 #  define PNG_WRITE_gAMA_SUPPORTED
 990 #  ifndef PNG_gAMA_SUPPORTED
 991 #    define PNG_gAMA_SUPPORTED
 992 #  endif
 993 #endif
 994 #ifndef PNG_NO_WRITE_hIST
 995 #  define PNG_WRITE_hIST_SUPPORTED
 996 #  ifndef PNG_hIST_SUPPORTED
 997 #    define PNG_hIST_SUPPORTED
 998 #  endif
 999 #endif
1000 #ifndef PNG_NO_WRITE_iCCP
1001 #  define PNG_WRITE_iCCP_SUPPORTED
1002 #  ifndef PNG_iCCP_SUPPORTED
1003 #    define PNG_iCCP_SUPPORTED
1004 #  endif
1005 #endif
1006 #ifndef PNG_NO_WRITE_iTXt
1007 #  ifndef PNG_WRITE_iTXt_SUPPORTED
1008 #    define PNG_WRITE_iTXt_SUPPORTED
1009 #  endif
1010 #  ifndef PNG_iTXt_SUPPORTED
1011 #    define PNG_iTXt_SUPPORTED
1012 #  endif
1013 #endif
1014 #ifndef PNG_NO_WRITE_oFFs
1015 #  define PNG_WRITE_oFFs_SUPPORTED
1016 #  ifndef PNG_oFFs_SUPPORTED
1017 #    define PNG_oFFs_SUPPORTED
1018 #  endif
1019 #endif
1020 #ifndef PNG_NO_WRITE_pCAL
1021 #  define PNG_WRITE_pCAL_SUPPORTED
1022 #  ifndef PNG_pCAL_SUPPORTED
1023 #    define PNG_pCAL_SUPPORTED
1024 #  endif
1025 #endif
1026 #ifndef PNG_NO_WRITE_sCAL
1027 #  define PNG_WRITE_sCAL_SUPPORTED
1028 #  ifndef PNG_sCAL_SUPPORTED
1029 #    define PNG_sCAL_SUPPORTED
1030 #  endif
1031 #endif
1032 #ifndef PNG_NO_WRITE_pHYs
1033 #  define PNG_WRITE_pHYs_SUPPORTED
1034 #  ifndef PNG_pHYs_SUPPORTED
1035 #    define PNG_pHYs_SUPPORTED
1036 #  endif
1037 #endif
1038 #ifndef PNG_NO_WRITE_sBIT
1039 #  define PNG_WRITE_sBIT_SUPPORTED
1040 #  ifndef PNG_sBIT_SUPPORTED
1041 #    define PNG_sBIT_SUPPORTED
1042 #  endif
1043 #endif
1044 #ifndef PNG_NO_WRITE_sPLT
1045 #  define PNG_WRITE_sPLT_SUPPORTED
1046 #  ifndef PNG_sPLT_SUPPORTED
1047 #    define PNG_sPLT_SUPPORTED
1048 #  endif
1049 #endif
1050 #ifndef PNG_NO_WRITE_sRGB
1051 #  define PNG_WRITE_sRGB_SUPPORTED
1052 #  ifndef PNG_sRGB_SUPPORTED
1053 #    define PNG_sRGB_SUPPORTED
1054 #  endif
1055 #endif
1056 #ifndef PNG_NO_WRITE_tEXt
1057 #  define PNG_WRITE_tEXt_SUPPORTED
1058 #  ifndef PNG_tEXt_SUPPORTED
1059 #    define PNG_tEXt_SUPPORTED
1060 #  endif
1061 #endif
1062 #ifndef PNG_NO_WRITE_tIME
1063 #  define PNG_WRITE_tIME_SUPPORTED
1064 #  ifndef PNG_tIME_SUPPORTED
1065 #    define PNG_tIME_SUPPORTED
1066 #  endif
1067 #endif
1068 #ifndef PNG_NO_WRITE_tRNS
1069 #  define PNG_WRITE_tRNS_SUPPORTED
1070 #  ifndef PNG_tRNS_SUPPORTED
1071 #    define PNG_tRNS_SUPPORTED
1072 #  endif
1073 #endif
1074 #ifndef PNG_NO_WRITE_zTXt
1075 #  define PNG_WRITE_zTXt_SUPPORTED
1076 #  ifndef PNG_zTXt_SUPPORTED
1077 #    define PNG_zTXt_SUPPORTED
1078 #  endif
1079 #endif
1080 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1081 #  define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1082 #  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1083 #    define PNG_UNKNOWN_CHUNKS_SUPPORTED
1084 #  endif
1085 #  ifndef PNG_NO_HANDLE_AS_UNKNOWN
1086 #     ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1087 #       define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1088 #     endif
1089 #  endif
1090 #endif
1091 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1092     defined(PNG_WRITE_zTXt_SUPPORTED)
1093 #  define PNG_WRITE_TEXT_SUPPORTED
1094 #  ifndef PNG_TEXT_SUPPORTED
1095 #    define PNG_TEXT_SUPPORTED
1096 #  endif
1097 #endif
1098
1099 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1100
1101 /* Turn this off to disable png_read_png() and
1102  * png_write_png() and leave the row_pointers member
1103  * out of the info structure.
1104  */
1105 #ifndef PNG_NO_INFO_IMAGE
1106 #  define PNG_INFO_IMAGE_SUPPORTED
1107 #endif
1108
1109 /* need the time information for reading tIME chunks */
1110 #if defined(PNG_tIME_SUPPORTED)
1111 #  if !defined(_WIN32_WCE)
1112      /* "time.h" functions are not supported on WindowsCE */
1113 #    include <time.h>
1114 #  endif
1115 #endif
1116
1117 /* Some typedefs to get us started.  These should be safe on most of the
1118  * common platforms.  The typedefs should be at least as large as the
1119  * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1120  * don't have to be exactly that size.  Some compilers dislike passing
1121  * unsigned shorts as function parameters, so you may be better off using
1122  * unsigned int for png_uint_16.  Likewise, for 64-bit systems, you may
1123  * want to have unsigned int for png_uint_32 instead of unsigned long.
1124  */
1125
1126 typedef unsigned long png_uint_32;
1127 typedef long png_int_32;
1128 typedef unsigned short png_uint_16;
1129 typedef short png_int_16;
1130 typedef unsigned char png_byte;
1131
1132 /* This is usually size_t.  It is typedef'ed just in case you need it to
1133    change (I'm not sure if you will or not, so I thought I'd be safe) */
1134 #ifdef PNG_SIZE_T
1135    typedef PNG_SIZE_T png_size_t;
1136 #  define png_sizeof(x) png_convert_size(sizeof(x))
1137 #else
1138    typedef size_t png_size_t;
1139 #  define png_sizeof(x) sizeof(x)
1140 #endif
1141
1142 /* The following is needed for medium model support.  It cannot be in the
1143  * PNG_INTERNAL section.  Needs modification for other compilers besides
1144  * MSC.  Model independent support declares all arrays and pointers to be
1145  * large using the far keyword.  The zlib version used must also support
1146  * model independent data.  As of version zlib 1.0.4, the necessary changes
1147  * have been made in zlib.  The USE_FAR_KEYWORD define triggers other
1148  * changes that are needed. (Tim Wegner)
1149  */
1150
1151 /* Separate compiler dependencies (problem here is that zlib.h always
1152    defines FAR. (SJT) */
1153 #ifdef __BORLANDC__
1154 #  if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1155 #    define LDATA 1
1156 #  else
1157 #    define LDATA 0
1158 #  endif
1159    /* GRR:  why is Cygwin in here?  Cygwin is not Borland C... */
1160 #  if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1161 #    define PNG_MAX_MALLOC_64K
1162 #    if (LDATA != 1)
1163 #      ifndef FAR
1164 #        define FAR __far
1165 #      endif
1166 #      define USE_FAR_KEYWORD
1167 #    endif   /* LDATA != 1 */
1168      /* Possibly useful for moving data out of default segment.
1169       * Uncomment it if you want. Could also define FARDATA as
1170       * const if your compiler supports it. (SJT)
1171 #    define FARDATA FAR
1172       */
1173 #  endif  /* __WIN32__, __FLAT__, __CYGWIN__ */
1174 #endif   /* __BORLANDC__ */
1175
1176
1177 /* Suggest testing for specific compiler first before testing for
1178  * FAR.  The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1179  * making reliance oncertain keywords suspect. (SJT)
1180  */
1181
1182 /* MSC Medium model */
1183 #if defined(FAR)
1184 #  if defined(M_I86MM)
1185 #    define USE_FAR_KEYWORD
1186 #    define FARDATA FAR
1187 #    include <dos.h>
1188 #  endif
1189 #endif
1190
1191 /* SJT: default case */
1192 #ifndef FAR
1193 #  define FAR
1194 #endif
1195
1196 /* At this point FAR is always defined */
1197 #ifndef FARDATA
1198 #  define FARDATA
1199 #endif
1200
1201 /* Typedef for floating-point numbers that are converted
1202    to fixed-point with a multiple of 100,000, e.g., int_gamma */
1203 typedef png_int_32 png_fixed_point;
1204
1205 /* Add typedefs for pointers */
1206 typedef void            FAR * png_voidp;
1207 typedef png_byte        FAR * png_bytep;
1208 typedef png_uint_32     FAR * png_uint_32p;
1209 typedef png_int_32      FAR * png_int_32p;
1210 typedef png_uint_16     FAR * png_uint_16p;
1211 typedef png_int_16      FAR * png_int_16p;
1212 typedef PNG_CONST char  FAR * png_const_charp;
1213 typedef char            FAR * png_charp;
1214 typedef png_fixed_point FAR * png_fixed_point_p;
1215
1216 #ifndef PNG_NO_STDIO
1217 #if defined(_WIN32_WCE)
1218 typedef HANDLE                png_FILE_p;
1219 #else
1220 typedef FILE                * png_FILE_p;
1221 #endif
1222 #endif
1223
1224 #ifdef PNG_FLOATING_POINT_SUPPORTED
1225 typedef double          FAR * png_doublep;
1226 #endif
1227
1228 /* Pointers to pointers; i.e. arrays */
1229 typedef png_byte        FAR * FAR * png_bytepp;
1230 typedef png_uint_32     FAR * FAR * png_uint_32pp;
1231 typedef png_int_32      FAR * FAR * png_int_32pp;
1232 typedef png_uint_16     FAR * FAR * png_uint_16pp;
1233 typedef png_int_16      FAR * FAR * png_int_16pp;
1234 typedef PNG_CONST char  FAR * FAR * png_const_charpp;
1235 typedef char            FAR * FAR * png_charpp;
1236 typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1237 #ifdef PNG_FLOATING_POINT_SUPPORTED
1238 typedef double          FAR * FAR * png_doublepp;
1239 #endif
1240
1241 /* Pointers to pointers to pointers; i.e., pointer to array */
1242 typedef char            FAR * FAR * FAR * png_charppp;
1243
1244 #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1245 /* SPC -  Is this stuff deprecated? */
1246 /* It'll be removed as of libpng-1.3.0 - GR-P */
1247 /* libpng typedefs for types in zlib. If zlib changes
1248  * or another compression library is used, then change these.
1249  * Eliminates need to change all the source files.
1250  */
1251 typedef charf *         png_zcharp;
1252 typedef charf * FAR *   png_zcharpp;
1253 typedef z_stream FAR *  png_zstreamp;
1254 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
1255
1256 /*
1257  * Define PNG_BUILD_DLL if the module being built is a Windows
1258  * LIBPNG DLL.
1259  *
1260  * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1261  * It is equivalent to Microsoft predefined macro _DLL that is
1262  * automatically defined when you compile using the share
1263  * version of the CRT (C Run-Time library)
1264  *
1265  * The cygwin mods make this behavior a little different:
1266  * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1267  * Define PNG_STATIC if you are building a static library for use with cygwin,
1268  *   -or- if you are building an application that you want to link to the
1269  *   static library.
1270  * PNG_USE_DLL is defined by default (no user action needed) unless one of
1271  *   the other flags is defined.
1272  */
1273
1274 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1275 #  define PNG_DLL
1276 #endif
1277 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
1278  * When building a static lib, default to no GLOBAL ARRAYS, but allow
1279  * command-line override
1280  */
1281 #if defined(__CYGWIN__)
1282 #  if !defined(PNG_STATIC)
1283 #    if defined(PNG_USE_GLOBAL_ARRAYS)
1284 #      undef PNG_USE_GLOBAL_ARRAYS
1285 #    endif
1286 #    if !defined(PNG_USE_LOCAL_ARRAYS)
1287 #      define PNG_USE_LOCAL_ARRAYS
1288 #    endif
1289 #  else
1290 #    if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
1291 #      if defined(PNG_USE_GLOBAL_ARRAYS)
1292 #        undef PNG_USE_GLOBAL_ARRAYS
1293 #      endif
1294 #    endif
1295 #  endif
1296 #  if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1297 #    define PNG_USE_LOCAL_ARRAYS
1298 #  endif
1299 #endif
1300
1301 /* Do not use global arrays (helps with building DLL's)
1302  * They are no longer used in libpng itself, since version 1.0.5c,
1303  * but might be required for some pre-1.0.5c applications.
1304  */
1305 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
1306 #  if defined(PNG_NO_GLOBAL_ARRAYS) || \
1307       (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
1308 #    define PNG_USE_LOCAL_ARRAYS
1309 #  else
1310 #    define PNG_USE_GLOBAL_ARRAYS
1311 #  endif
1312 #endif
1313
1314 #if defined(__CYGWIN__)
1315 #  undef PNGAPI
1316 #  define PNGAPI __cdecl
1317 #  undef PNG_IMPEXP
1318 #  define PNG_IMPEXP
1319 #endif
1320
1321 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1322  * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1323  * Don't ignore those warnings; you must also reset the default calling
1324  * convention in your compiler to match your PNGAPI, and you must build
1325  * zlib and your applications the same way you build libpng.
1326  */
1327
1328 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1329 #  ifndef PNG_NO_MODULEDEF
1330 #    define PNG_NO_MODULEDEF
1331 #  endif
1332 #endif
1333
1334 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1335 #  define PNG_IMPEXP
1336 #endif
1337
1338 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1339     (( defined(_Windows) || defined(_WINDOWS) || \
1340        defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1341
1342 #  ifndef PNGAPI
1343 #     if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1344 #        define PNGAPI __cdecl
1345 #     else
1346 #        define PNGAPI _cdecl
1347 #     endif
1348 #  endif
1349
1350 #  if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1351        0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1352 #     define PNG_IMPEXP
1353 #  endif
1354
1355 #  if !defined(PNG_IMPEXP)
1356
1357 #     define PNG_EXPORT_TYPE1(type,symbol)  PNG_IMPEXP type PNGAPI symbol
1358 #     define PNG_EXPORT_TYPE2(type,symbol)  type PNG_IMPEXP PNGAPI symbol
1359
1360       /* Borland/Microsoft */
1361 #     if defined(_MSC_VER) || defined(__BORLANDC__)
1362 #        if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1363 #           define PNG_EXPORT PNG_EXPORT_TYPE1
1364 #        else
1365 #           define PNG_EXPORT PNG_EXPORT_TYPE2
1366 #           if defined(PNG_BUILD_DLL)
1367 #              define PNG_IMPEXP __export
1368 #           else
1369 #              define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
1370                                                  VC++ */
1371 #           endif                             /* Exists in Borland C++ for
1372                                                  C++ classes (== huge) */
1373 #        endif
1374 #     endif
1375
1376 #     if !defined(PNG_IMPEXP)
1377 #        if defined(PNG_BUILD_DLL)
1378 #           define PNG_IMPEXP __declspec(dllexport)
1379 #        else
1380 #           define PNG_IMPEXP __declspec(dllimport)
1381 #        endif
1382 #     endif
1383 #  endif  /* PNG_IMPEXP */
1384 #else /* !(DLL || non-cygwin WINDOWS) */
1385 #   if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1386 #      ifndef PNGAPI
1387 #         define PNGAPI _System
1388 #      endif
1389 #   else
1390 #      if 0 /* ... other platforms, with other meanings */
1391 #      endif
1392 #   endif
1393 #endif
1394
1395 #ifndef PNGAPI
1396 #  define PNGAPI
1397 #endif
1398 #ifndef PNG_IMPEXP
1399 #  define PNG_IMPEXP
1400 #endif
1401
1402 #ifdef PNG_BUILDSYMS
1403 #  ifndef PNG_EXPORT
1404 #    define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1405 #  endif
1406 #  ifdef PNG_USE_GLOBAL_ARRAYS
1407 #    ifndef PNG_EXPORT_VAR
1408 #      define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
1409 #    endif
1410 #  endif
1411 #endif
1412
1413 #ifndef PNG_EXPORT
1414 #  define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1415 #endif
1416
1417 #ifdef PNG_USE_GLOBAL_ARRAYS
1418 #  ifndef PNG_EXPORT_VAR
1419 #    define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
1420 #  endif
1421 #endif
1422
1423 /* User may want to use these so they are not in PNG_INTERNAL. Any library
1424  * functions that are passed far data must be model independent.
1425  */
1426
1427 #ifndef PNG_ABORT
1428 #  define PNG_ABORT() abort()
1429 #endif
1430
1431 #ifdef PNG_SETJMP_SUPPORTED
1432 #  define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
1433 #else
1434 #  define png_jmpbuf(png_ptr) \
1435    (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
1436 #endif
1437
1438 #if defined(USE_FAR_KEYWORD)  /* memory model independent fns */
1439 /* use this to make far-to-near assignments */
1440 #  define CHECK   1
1441 #  define NOCHECK 0
1442 #  define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1443 #  define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1444 #  define png_snprintf _fsnprintf   /* Added to v 1.2.19 */
1445 #  define png_strlen  _fstrlen
1446 #  define png_memcmp  _fmemcmp    /* SJT: added */
1447 #  define png_memcpy  _fmemcpy
1448 #  define png_memset  _fmemset
1449 #else /* use the usual functions */
1450 #  define CVT_PTR(ptr)         (ptr)
1451 #  define CVT_PTR_NOCHECK(ptr) (ptr)
1452 #  ifndef PNG_NO_SNPRINTF
1453 #    ifdef _MSC_VER
1454 #      define png_snprintf _snprintf   /* Added to v 1.2.19 */
1455 #      define png_snprintf2 _snprintf
1456 #      define png_snprintf6 _snprintf
1457 #    else
1458 #      define png_snprintf snprintf   /* Added to v 1.2.19 */
1459 #      define png_snprintf2 snprintf
1460 #      define png_snprintf6 snprintf
1461 #    endif
1462 #  else
1463      /* You don't have or don't want to use snprintf().  Caution: Using
1464       * sprintf instead of snprintf exposes your application to accidental
1465       * or malevolent buffer overflows.  If you don't have snprintf()
1466       * as a general rule you should provide one (you can get one from
1467       * Portable OpenSSH). */
1468 #    define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1469 #    define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1470 #    define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1471         sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1472 #  endif
1473 #  define png_strlen  strlen
1474 #  define png_memcmp  memcmp      /* SJT: added */
1475 #  define png_memcpy  memcpy
1476 #  define png_memset  memset
1477 #endif
1478 /* End of memory model independent support */
1479
1480 /* Just a little check that someone hasn't tried to define something
1481  * contradictory.
1482  */
1483 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1484 #  undef PNG_ZBUF_SIZE
1485 #  define PNG_ZBUF_SIZE 65536L
1486 #endif
1487
1488 /* Added at libpng-1.2.8 */
1489 #endif /* PNG_VERSION_INFO_ONLY */
1490
1491 #endif /* PNGCONF_H */