reactos/dll/3rdparty/libpng/pngconf.h

   1
   2 /* pngconf.h - machine configurable file for libpng
   3  *
   4  * libpng version 1.4.3 - June 26, 2010
   5  * For conditions of distribution and use, see copyright notice in png.h
   6  * Copyright (c) 1998-2010 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  * This code is released under the libpng license.
  11  * For conditions of distribution and use, see the disclaimer
  12  * and license in png.h
  13  *
  14  */
  15
  16 /* Any machine specific code is near the front of this file, so if you
  17  * are configuring libpng for a machine, you may want to read the section
  18  * starting here down to where it starts to typedef png_color, png_text,
  19  * and png_info.
  20  */
  21
  22 #ifndef PNGCONF_H
  23 #define PNGCONF_H
  24
  25 #ifndef PNG_NO_LIMITS_H
  26 #  include <limits.h>
  27 #endif
  28
  29 /* Added at libpng-1.2.9 */
  30
  31 /* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure"
  32  * script.
  33  */
  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  * PNG_USER_CONFIG has to be defined on the compiler command line. This
  44  * includes the resource compiler for Windows DLL configurations.
  45  */
  46 #ifdef PNG_USER_CONFIG
  47 #  ifndef PNG_USER_PRIVATEBUILD
  48 #    define PNG_USER_PRIVATEBUILD
  49 #  endif
  50 #  include "pngusr.h"
  51 #endif
  52
  53 /*
  54  * If you create a private DLL you need to define in "pngusr.h" the followings:
  55  * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
  56  *        the DLL was built>
  57  *  e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
  58  * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
  59  *        distinguish your DLL from those of the official release. These
  60  *        correspond to the trailing letters that come after the version
  61  *        number and must match your private DLL name>
  62  *  e.g. // private DLL "libpng13gx.dll"
  63  *       #define PNG_USER_DLLFNAME_POSTFIX "gx"
  64  *
  65  * The following macros are also at your disposal if you want to complete the
  66  * DLL VERSIONINFO structure.
  67  * - PNG_USER_VERSIONINFO_COMMENTS
  68  * - PNG_USER_VERSIONINFO_COMPANYNAME
  69  * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
  70  */
  71
  72 #ifdef __STDC__
  73 #  ifdef SPECIALBUILD
  74 #    pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
  75      are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
  76 #  endif
  77
  78 #  ifdef PRIVATEBUILD
  79 #    pragma message("PRIVATEBUILD is deprecated.\
  80      Use PNG_USER_PRIVATEBUILD instead.")
  81 #    define PNG_USER_PRIVATEBUILD PRIVATEBUILD
  82 #  endif
  83 #endif /* __STDC__ */
  84
  85 /* End of material added to libpng-1.2.8 */
  86
  87 #ifndef PNG_VERSION_INFO_ONLY
  88
  89 /* This is the size of the compression buffer, and thus the size of
  90  * an IDAT chunk.  Make this whatever size you feel is best for your
  91  * machine.  One of these will be allocated per png_struct.  When this
  92  * is full, it writes the data to the disk, and does some other
  93  * calculations.  Making this an extremely small size will slow
  94  * the library down, but you may want to experiment to determine
  95  * where it becomes significant, if you are concerned with memory
  96  * usage.  Note that zlib allocates at least 32Kb also.  For readers,
  97  * this describes the size of the buffer available to read the data in.
  98  * Unless this gets smaller than the size of a row (compressed),
  99  * it should not make much difference how big this is.
 100  */
 101
 102 #ifndef PNG_ZBUF_SIZE
 103 #  define PNG_ZBUF_SIZE 8192
 104 #endif
 105
 106 /* Enable if you want a write-only libpng */
 107
 108 #ifndef PNG_NO_READ_SUPPORTED
 109 #  define PNG_READ_SUPPORTED
 110 #endif
 111
 112 /* Enable if you want a read-only libpng */
 113
 114 #ifndef PNG_NO_WRITE_SUPPORTED
 115 #  define PNG_WRITE_SUPPORTED
 116 #endif
 117
 118 /* Enabled in 1.4.0. */
 119 #ifdef PNG_ALLOW_BENIGN_ERRORS
 120 #  define png_benign_error png_warning
 121 #  define png_chunk_benign_error png_chunk_warning
 122 #else
 123 #  ifndef PNG_BENIGN_ERRORS_SUPPORTED
 124 #    define png_benign_error png_error
 125 #    define png_chunk_benign_error png_chunk_error
 126 #  endif
 127 #endif
 128
 129 /* Added at libpng version 1.4.0 */
 130 #if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
 131 #  define PNG_WARNINGS_SUPPORTED
 132 #endif
 133
 134 /* Added at libpng version 1.4.0 */
 135 #if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
 136 #  define PNG_ERROR_TEXT_SUPPORTED
 137 #endif
 138
 139 /* Added at libpng version 1.4.0 */
 140 #if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
 141 #  define PNG_CHECK_cHRM_SUPPORTED
 142 #endif
 143
 144 /* Added at libpng version 1.4.0 */
 145 #if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
 146 #  define PNG_ALIGNED_MEMORY_SUPPORTED
 147 #endif
 148
 149 /* Enabled by default in 1.2.0.  You can disable this if you don't need to
 150    support PNGs that are embedded in MNG datastreams */
 151 #ifndef PNG_NO_MNG_FEATURES
 152 #  ifndef PNG_MNG_FEATURES_SUPPORTED
 153 #    define PNG_MNG_FEATURES_SUPPORTED
 154 #  endif
 155 #endif
 156
 157 /* Added at libpng version 1.4.0 */
 158 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
 159 #  ifndef PNG_FLOATING_POINT_SUPPORTED
 160 #    define PNG_FLOATING_POINT_SUPPORTED
 161 #  endif
 162 #endif
 163
 164 /* Added at libpng-1.4.0beta49 for testing (this test is no longer used
 165    in libpng and png_calloc() is always present)
 166  */
 167 #define PNG_CALLOC_SUPPORTED
 168
 169 /* If you are running on a machine where you cannot allocate more
 170  * than 64K of memory at once, uncomment this.  While libpng will not
 171  * normally need that much memory in a chunk (unless you load up a very
 172  * large file), zlib needs to know how big of a chunk it can use, and
 173  * libpng thus makes sure to check any memory allocation to verify it
 174  * will fit into memory.
 175 #define PNG_MAX_MALLOC_64K
 176  */
 177 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
 178 #  define PNG_MAX_MALLOC_64K
 179 #endif
 180
 181 /* Special munging to support doing things the 'cygwin' way:
 182  * 'Normal' png-on-win32 defines/defaults:
 183  *   PNG_BUILD_DLL -- building dll
 184  *   PNG_USE_DLL   -- building an application, linking to dll
 185  *   (no define)   -- building static library, or building an
 186  *                    application and linking to the static lib
 187  * 'Cygwin' defines/defaults:
 188  *   PNG_BUILD_DLL -- (ignored) building the dll
 189  *   (no define)   -- (ignored) building an application, linking to the dll
 190  *   PNG_STATIC    -- (ignored) building the static lib, or building an
 191  *                    application that links to the static lib.
 192  *   ALL_STATIC    -- (ignored) building various static libs, or building an
 193  *                    application that links to the static libs.
 194  * Thus,
 195  * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
 196  * this bit of #ifdefs will define the 'correct' config variables based on
 197  * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
 198  * unnecessary.
 199  *
 200  * Also, the precedence order is:
 201  *   ALL_STATIC (since we can't #undef something outside our namespace)
 202  *   PNG_BUILD_DLL
 203  *   PNG_STATIC
 204  *   (nothing) == PNG_USE_DLL
 205  *
 206  * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
 207  *   of auto-import in binutils, we no longer need to worry about
 208  *   __declspec(dllexport) / __declspec(dllimport) and friends.  Therefore,
 209  *   we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
 210  *   to __declspec() stuff.  However, we DO need to worry about
 211  *   PNG_BUILD_DLL and PNG_STATIC because those change some defaults
 212  *   such as CONSOLE_IO.
 213  */
 214 #ifdef __CYGWIN__
 215 #  ifdef ALL_STATIC
 216 #    ifdef PNG_BUILD_DLL
 217 #      undef PNG_BUILD_DLL
 218 #    endif
 219 #    ifdef PNG_USE_DLL
 220 #      undef PNG_USE_DLL
 221 #    endif
 222 #    ifdef PNG_DLL
 223 #      undef PNG_DLL
 224 #    endif
 225 #    ifndef PNG_STATIC
 226 #      define PNG_STATIC
 227 #    endif
 228 #  else
 229 #    ifdef PNG_BUILD_DLL
 230 #      ifdef PNG_STATIC
 231 #        undef PNG_STATIC
 232 #      endif
 233 #      ifdef PNG_USE_DLL
 234 #        undef PNG_USE_DLL
 235 #      endif
 236 #      ifndef PNG_DLL
 237 #        define PNG_DLL
 238 #      endif
 239 #    else
 240 #      ifdef PNG_STATIC
 241 #        ifdef PNG_USE_DLL
 242 #          undef PNG_USE_DLL
 243 #        endif
 244 #        ifdef PNG_DLL
 245 #          undef PNG_DLL
 246 #        endif
 247 #      else
 248 #        ifndef PNG_USE_DLL
 249 #          define PNG_USE_DLL
 250 #        endif
 251 #        ifndef PNG_DLL
 252 #          define PNG_DLL
 253 #        endif
 254 #      endif
 255 #    endif
 256 #  endif
 257 #endif
 258
 259 /* This protects us against compilers that run on a windowing system
 260  * and thus don't have or would rather us not use the stdio types:
 261  * stdin, stdout, and stderr.  The only one currently used is stderr
 262  * in png_error() and png_warning().  #defining PNG_NO_CONSOLE_IO will
 263  * prevent these from being compiled and used. #defining PNG_NO_STDIO
 264  * will also prevent these, plus will prevent the entire set of stdio
 265  * macros and functions (FILE *, printf, etc.) from being compiled and used,
 266  * unless (PNG_DEBUG > 0) has been #defined.
 267  *
 268  * #define PNG_NO_CONSOLE_IO
 269  * #define PNG_NO_STDIO
 270  */
 271
 272 #if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
 273 #  define PNG_STDIO_SUPPORTED
 274 #endif
 275
 276
 277 #ifdef PNG_BUILD_DLL
 278 #  if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
 279 #    define PNG_NO_CONSOLE_IO
 280 #  endif
 281 #endif
 282
 283 #  ifdef PNG_NO_STDIO
 284 #    ifndef PNG_NO_CONSOLE_IO
 285 #      define PNG_NO_CONSOLE_IO
 286 #    endif
 287 #    ifdef PNG_DEBUG
 288 #      if (PNG_DEBUG > 0)
 289 #        include <stdio.h>
 290 #      endif
 291 #    endif
 292 #  else
 293 #    include <stdio.h>
 294 #  endif
 295
 296 #if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
 297 #  define PNG_CONSOLE_IO_SUPPORTED
 298 #endif
 299
 300 /* This macro protects us against machines that don't have function
 301  * prototypes (ie K&R style headers).  If your compiler does not handle
 302  * function prototypes, define this macro and use the included ansi2knr.
 303  * I've always been able to use _NO_PROTO as the indicator, but you may
 304  * need to drag the empty declaration out in front of here, or change the
 305  * ifdef to suit your own needs.
 306  */
 307 #ifndef PNGARG
 308
 309 #ifdef OF /* zlib prototype munger */
 310 #  define PNGARG(arglist) OF(arglist)
 311 #else
 312
 313 #ifdef _NO_PROTO
 314 #  define PNGARG(arglist) ()
 315 #else
 316 #  define PNGARG(arglist) arglist
 317 #endif /* _NO_PROTO */
 318
 319 #endif /* OF */
 320
 321 #endif /* PNGARG */
 322
 323 /* Try to determine if we are compiling on a Mac.  Note that testing for
 324  * just __MWERKS__ is not good enough, because the Codewarrior is now used
 325  * on non-Mac platforms.
 326  */
 327 #ifndef MACOS
 328 #  if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
 329       defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
 330 #    define MACOS
 331 #  endif
 332 #endif
 333
 334 /* Enough people need this for various reasons to include it here */
 335 #if !defined(MACOS) && !defined(RISCOS)
 336 #  include <sys/types.h>
 337 #endif
 338
 339 /* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
 340 #if !defined(PNG_NO_SETJMP) && \
 341     !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
 342 #  define PNG_SETJMP_SUPPORTED
 343 #endif
 344
 345 #ifdef PNG_SETJMP_SUPPORTED
 346 /* This is an attempt to force a single setjmp behaviour on Linux.  If
 347  * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
 348  *
 349  * You can bypass this test if you know that your application uses exactly
 350  * the same setjmp.h that was included when libpng was built.  Only define
 351  * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
 352  * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
 353  * while building a separate libpng library for general use.
 354  */
 355
 356 #  ifndef PNG_SKIP_SETJMP_CHECK
 357 #    ifdef __linux__
 358 #      ifdef _BSD_SOURCE
 359 #        define PNG_SAVE_BSD_SOURCE
 360 #        undef _BSD_SOURCE
 361 #      endif
 362 #      ifdef _SETJMP_H
 363        /* If you encounter a compiler error here, see the explanation
 364         * near the end of INSTALL.
 365         */
 366            __pngconf.h__ in libpng already includes setjmp.h;
 367            __dont__ include it again.;
 368 #      endif
 369 #    endif /* __linux__ */
 370 #  endif /* PNG_SKIP_SETJMP_CHECK */
 371
 372    /* Include setjmp.h for error handling */
 373 #  include <setjmp.h>
 374
 375 #  ifdef __linux__
 376 #    ifdef PNG_SAVE_BSD_SOURCE
 377 #      ifdef _BSD_SOURCE
 378 #        undef _BSD_SOURCE
 379 #      endif
 380 #      define _BSD_SOURCE
 381 #      undef PNG_SAVE_BSD_SOURCE
 382 #    endif
 383 #  endif /* __linux__ */
 384 #endif /* PNG_SETJMP_SUPPORTED */
 385
 386 #ifdef BSD
 387 #  include <strings.h>
 388 #else
 389 #  include <string.h>
 390 #endif
 391
 392 /* Other defines for things like memory and the like can go here.  */
 393
 394 /* This controls how fine the quantizing gets.  As this allocates
 395  * a largish chunk of memory (32K), those who are not as concerned
 396  * with quantizing quality can decrease some or all of these.
 397  */
 398
 399 /* Prior to libpng-1.4.2, these were PNG_DITHER_*_BITS
 400  * These migration aids will be removed from libpng-1.5.0.
 401  */
 402 #ifdef PNG_DITHER_RED_BITS
 403 #  define PNG_QUANTIZE_RED_BITS PNG_DITHER_RED_BITS
 404 #endif
 405 #ifdef PNG_DITHER_GREEN_BITS
 406 #  define PNG_QUANTIZE_GREEN_BITS PNG_DITHER_GREEN_BITS
 407 #endif
 408 #ifdef PNG_DITHER_BLUE_BITS
 409 #  define PNG_QUANTIZE_BLUE_BITS PNG_DITHER_BLUE_BITS
 410 #endif
 411
 412 #ifndef PNG_QUANTIZE_RED_BITS
 413 #  define PNG_QUANTIZE_RED_BITS 5
 414 #endif
 415 #ifndef PNG_QUANTIZE_GREEN_BITS
 416 #  define PNG_QUANTIZE_GREEN_BITS 5
 417 #endif
 418 #ifndef PNG_QUANTIZE_BLUE_BITS
 419 #  define PNG_QUANTIZE_BLUE_BITS 5
 420 #endif
 421
 422 /* This controls how fine the gamma correction becomes when you
 423  * are only interested in 8 bits anyway.  Increasing this value
 424  * results in more memory being used, and more pow() functions
 425  * being called to fill in the gamma tables.  Don't set this value
 426  * less then 8, and even that may not work (I haven't tested it).
 427  */
 428
 429 #ifndef PNG_MAX_GAMMA_8
 430 #  define PNG_MAX_GAMMA_8 11
 431 #endif
 432
 433 /* This controls how much a difference in gamma we can tolerate before
 434  * we actually start doing gamma conversion.
 435  */
 436 #ifndef PNG_GAMMA_THRESHOLD
 437 #  define PNG_GAMMA_THRESHOLD 0.05
 438 #endif
 439
 440 /* The following uses const char * instead of char * for error
 441  * and warning message functions, so some compilers won't complain.
 442  * If you do not want to use const, define PNG_NO_CONST here.
 443  */
 444
 445 #ifndef PNG_CONST
 446 #  ifndef PNG_NO_CONST
 447 #    define PNG_CONST const
 448 #  else
 449 #    define PNG_CONST
 450 #  endif
 451 #endif
 452
 453 /* The following defines give you the ability to remove code from the
 454  * library that you will not be using.  I wish I could figure out how to
 455  * automate this, but I can't do that without making it seriously hard
 456  * on the users.  So if you are not using an ability, change the #define
 457  * to and #undef, and that part of the library will not be compiled.  If
 458  * your linker can't find a function, you may want to make sure the
 459  * ability is defined here.  Some of these depend upon some others being
 460  * defined.  I haven't figured out all the interactions here, so you may
 461  * have to experiment awhile to get everything to compile.  If you are
 462  * creating or using a shared library, you probably shouldn't touch this,
 463  * as it will affect the size of the structures, and this will cause bad
 464  * things to happen if the library and/or application ever change.
 465  */
 466
 467 /* Any features you will not be using can be undef'ed here */
 468
 469 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
 470  * to turn it off with PNG_NO_READ|WRITE_TRANSFORMS on the compile line,
 471  * then pick and choose which ones to define without having to edit this
 472  * file. It is safe to use the PNG_NO_READ|WRITE_TRANSFORMS
 473  * if you only want to have a png-compliant reader/writer but don't need
 474  * any of the extra transformations.  This saves about 80 kbytes in a
 475  * typical installation of the library. (PNG_NO_* form added in version
 476  * 1.0.1c, for consistency; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
 477  * 1.4.0)
 478  */
 479
 480 /* Ignore attempt to turn off both floating and fixed point support */
 481 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
 482     !defined(PNG_NO_FIXED_POINT_SUPPORTED)
 483 #  define PNG_FIXED_POINT_SUPPORTED
 484 #endif
 485
 486 #ifdef PNG_READ_SUPPORTED
 487
 488 /* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */
 489 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
 490       !defined(PNG_NO_READ_TRANSFORMS)
 491 #  define PNG_READ_TRANSFORMS_SUPPORTED
 492 #endif
 493
 494 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
 495 #  ifndef PNG_NO_READ_EXPAND
 496 #    define PNG_READ_EXPAND_SUPPORTED
 497 #  endif
 498 #  ifndef PNG_NO_READ_SHIFT
 499 #    define PNG_READ_SHIFT_SUPPORTED
 500 #  endif
 501 #  ifndef PNG_NO_READ_PACK
 502 #    define PNG_READ_PACK_SUPPORTED
 503 #  endif
 504 #  ifndef PNG_NO_READ_BGR
 505 #    define PNG_READ_BGR_SUPPORTED
 506 #  endif
 507 #  ifndef PNG_NO_READ_SWAP
 508 #    define PNG_READ_SWAP_SUPPORTED
 509 #  endif
 510 #  ifndef PNG_NO_READ_PACKSWAP
 511 #    define PNG_READ_PACKSWAP_SUPPORTED
 512 #  endif
 513 #  ifndef PNG_NO_READ_INVERT
 514 #    define PNG_READ_INVERT_SUPPORTED
 515 #  endif
 516 #  ifndef PNG_NO_READ_QUANTIZE
 517      /* Prior to libpng-1.4.0 this was PNG_READ_DITHER_SUPPORTED */
 518 #    ifndef PNG_NO_READ_DITHER  /* This migration aid will be removed */
 519 #      define PNG_READ_QUANTIZE_SUPPORTED
 520 #    endif
 521 #  endif
 522 #  ifndef PNG_NO_READ_BACKGROUND
 523 #    define PNG_READ_BACKGROUND_SUPPORTED
 524 #  endif
 525 #  ifndef PNG_NO_READ_16_TO_8
 526 #    define PNG_READ_16_TO_8_SUPPORTED
 527 #  endif
 528 #  ifndef PNG_NO_READ_FILLER
 529 #    define PNG_READ_FILLER_SUPPORTED
 530 #  endif
 531 #  ifndef PNG_NO_READ_GAMMA
 532 #    define PNG_READ_GAMMA_SUPPORTED
 533 #  endif
 534 #  ifndef PNG_NO_READ_GRAY_TO_RGB
 535 #    define PNG_READ_GRAY_TO_RGB_SUPPORTED
 536 #  endif
 537 #  ifndef PNG_NO_READ_SWAP_ALPHA
 538 #    define PNG_READ_SWAP_ALPHA_SUPPORTED
 539 #  endif
 540 #  ifndef PNG_NO_READ_INVERT_ALPHA
 541 #    define PNG_READ_INVERT_ALPHA_SUPPORTED
 542 #  endif
 543 #  ifndef PNG_NO_READ_STRIP_ALPHA
 544 #    define PNG_READ_STRIP_ALPHA_SUPPORTED
 545 #  endif
 546 #  ifndef PNG_NO_READ_USER_TRANSFORM
 547 #    define PNG_READ_USER_TRANSFORM_SUPPORTED
 548 #  endif
 549 #  ifndef PNG_NO_READ_RGB_TO_GRAY
 550 #    define PNG_READ_RGB_TO_GRAY_SUPPORTED
 551 #  endif
 552 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
 553
 554 /* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
 555 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
 556  !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED)  /* if you don't do progressive */
 557 #  define PNG_PROGRESSIVE_READ_SUPPORTED     /* reading.  This is not talking */
 558 #endif                               /* about interlacing capability!  You'll */
 559             /* still have interlacing unless you change the following define: */
 560
 561 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
 562
 563 /* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
 564 #if !defined(PNG_NO_SEQUENTIAL_READ) && \
 565     !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
 566     !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
 567 #  define PNG_SEQUENTIAL_READ_SUPPORTED
 568 #endif
 569
 570 #ifndef PNG_NO_READ_COMPOSITE_NODIV
 571 #  ifndef PNG_NO_READ_COMPOSITED_NODIV  /* libpng-1.0.x misspelling */
 572 #    define PNG_READ_COMPOSITE_NODIV_SUPPORTED   /* well tested on Intel, SGI */
 573 #  endif
 574 #endif
 575
 576 #if !defined(PNG_NO_GET_INT_32) || defined(PNG_READ_oFFS_SUPPORTED) || \
 577     defined(PNG_READ_pCAL_SUPPORTED)
 578 #  ifndef PNG_GET_INT_32_SUPPORTED
 579 #    define PNG_GET_INT_32_SUPPORTED
 580 #  endif
 581 #endif
 582
 583 #endif /* PNG_READ_SUPPORTED */
 584
 585 #ifdef PNG_WRITE_SUPPORTED
 586
 587 /* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
 588 #if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
 589     !defined(PNG_NO_WRITE_TRANSFORMS)
 590 #  define PNG_WRITE_TRANSFORMS_SUPPORTED
 591 #endif
 592
 593 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
 594 #  ifndef PNG_NO_WRITE_SHIFT
 595 #    define PNG_WRITE_SHIFT_SUPPORTED
 596 #  endif
 597 #  ifndef PNG_NO_WRITE_PACK
 598 #    define PNG_WRITE_PACK_SUPPORTED
 599 #  endif
 600 #  ifndef PNG_NO_WRITE_BGR
 601 #    define PNG_WRITE_BGR_SUPPORTED
 602 #  endif
 603 #  ifndef PNG_NO_WRITE_SWAP
 604 #    define PNG_WRITE_SWAP_SUPPORTED
 605 #  endif
 606 #  ifndef PNG_NO_WRITE_PACKSWAP
 607 #    define PNG_WRITE_PACKSWAP_SUPPORTED
 608 #  endif
 609 #  ifndef PNG_NO_WRITE_INVERT
 610 #    define PNG_WRITE_INVERT_SUPPORTED
 611 #  endif
 612 #  ifndef PNG_NO_WRITE_FILLER
 613 #    define PNG_WRITE_FILLER_SUPPORTED   /* same as WRITE_STRIP_ALPHA */
 614 #  endif
 615 #  ifndef PNG_NO_WRITE_SWAP_ALPHA
 616 #    define PNG_WRITE_SWAP_ALPHA_SUPPORTED
 617 #  endif
 618 #  ifndef PNG_NO_WRITE_INVERT_ALPHA
 619 #    define PNG_WRITE_INVERT_ALPHA_SUPPORTED
 620 #  endif
 621 #  ifndef PNG_NO_WRITE_USER_TRANSFORM
 622 #    define PNG_WRITE_USER_TRANSFORM_SUPPORTED
 623 #  endif
 624 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
 625
 626 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
 627     !defined(PNG_WRITE_INTERLACING_SUPPORTED)
 628     /* This is not required for PNG-compliant encoders, but can cause
 629      * trouble if left undefined
 630     */
 631 #  define PNG_WRITE_INTERLACING_SUPPORTED
 632 #endif
 633
 634 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
 635     !defined(PNG_WRITE_WEIGHTED_FILTER) && \
 636      defined(PNG_FLOATING_POINT_SUPPORTED)
 637 #  define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
 638 #endif
 639
 640 #ifndef PNG_NO_WRITE_FLUSH
 641 #  define PNG_WRITE_FLUSH_SUPPORTED
 642 #endif
 643
 644 #if !defined(PNG_NO_SAVE_INT_32) || defined(PNG_WRITE_oFFS_SUPPORTED) || \
 645     defined(PNG_WRITE_pCAL_SUPPORTED)
 646 #  ifndef PNG_SAVE_INT_32_SUPPORTED
 647 #    define PNG_SAVE_INT_32_SUPPORTED
 648 #  endif
 649 #endif
 650
 651 #endif /* PNG_WRITE_SUPPORTED */
 652
 653 #define PNG_NO_ERROR_NUMBERS
 654
 655 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
 656     defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
 657 #  ifndef PNG_NO_USER_TRANSFORM_PTR
 658 #    define PNG_USER_TRANSFORM_PTR_SUPPORTED
 659 #  endif
 660 #endif
 661
 662 #if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
 663 #  define PNG_TIME_RFC1123_SUPPORTED
 664 #endif
 665
 666 /* This adds extra functions in pngget.c for accessing data from the
 667  * info pointer (added in version 0.99)
 668  * png_get_image_width()
 669  * png_get_image_height()
 670  * png_get_bit_depth()
 671  * png_get_color_type()
 672  * png_get_compression_type()
 673  * png_get_filter_type()
 674  * png_get_interlace_type()
 675  * png_get_pixel_aspect_ratio()
 676  * png_get_pixels_per_meter()
 677  * png_get_x_offset_pixels()
 678  * png_get_y_offset_pixels()
 679  * png_get_x_offset_microns()
 680  * png_get_y_offset_microns()
 681  */
 682 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
 683 #  define PNG_EASY_ACCESS_SUPPORTED
 684 #endif
 685
 686 /* Added at libpng-1.2.0 */
 687 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
 688 #  define PNG_USER_MEM_SUPPORTED
 689 #endif
 690
 691 /* Added at libpng-1.2.6 */
 692 #ifndef PNG_NO_SET_USER_LIMITS
 693 #  ifndef PNG_SET_USER_LIMITS_SUPPORTED
 694 #    define PNG_SET_USER_LIMITS_SUPPORTED
 695 #  endif
 696   /* Feature added at libpng-1.4.0, this flag added at 1.4.1 */
 697 #  ifndef PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
 698 #    define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
 699 #  endif
 700   /* Feature added at libpng-1.4.1, this flag added at 1.4.1 */
 701 #  ifndef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
 702 #    define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
 703 #  endif
 704 #endif
 705
 706 /* Added at libpng-1.2.43 */
 707 #ifndef PNG_USER_LIMITS_SUPPORTED
 708 #  ifndef PNG_NO_USER_LIMITS
 709 #    define PNG_USER_LIMITS_SUPPORTED
 710 #  endif
 711 #endif
 712
 713 /* Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGs no matter
 714  * how large, set these two limits to 0x7fffffffL
 715  */
 716 #ifndef PNG_USER_WIDTH_MAX
 717 #  define PNG_USER_WIDTH_MAX 1000000L
 718 #endif
 719 #ifndef PNG_USER_HEIGHT_MAX
 720 #  define PNG_USER_HEIGHT_MAX 1000000L
 721 #endif
 722
 723 /* Added at libpng-1.2.43.  To accept all valid PNGs no matter
 724  * how large, set these two limits to 0.
 725  */
 726 #ifndef PNG_USER_CHUNK_CACHE_MAX
 727 #  define PNG_USER_CHUNK_CACHE_MAX 0
 728 #endif
 729
 730 /* Added at libpng-1.2.43 */
 731 #ifndef PNG_USER_CHUNK_MALLOC_MAX
 732 #  define PNG_USER_CHUNK_MALLOC_MAX 0
 733 #endif
 734
 735 /* Added at libpng-1.4.0 */
 736 #if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
 737 #  define PNG_IO_STATE_SUPPORTED
 738 #endif
 739
 740 #ifndef PNG_LITERAL_SHARP
 741 #  define PNG_LITERAL_SHARP 0x23
 742 #endif
 743 #ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
 744 #  define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
 745 #endif
 746 #ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
 747 #  define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
 748 #endif
 749 #ifndef PNG_STRING_NEWLINE
 750 #define PNG_STRING_NEWLINE "\n"
 751 #endif
 752
 753 /* These are currently experimental features, define them if you want */
 754
 755 /* Very little testing */
 756 /*
 757 #ifdef PNG_READ_SUPPORTED
 758 #  ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
 759 #    define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
 760 #  endif
 761 #endif
 762 */
 763
 764 /* This is only for PowerPC big-endian and 680x0 systems */
 765 /* some testing */
 766 /*
 767 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
 768 #  define PNG_READ_BIG_ENDIAN_SUPPORTED
 769 #endif
 770 */
 771
 772 #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
 773 #  define PNG_USE_READ_MACROS
 774 #endif
 775
 776 /* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
 777
 778 #if !defined(PNG_NO_POINTER_INDEXING) && \
 779     !defined(PNG_POINTER_INDEXING_SUPPORTED)
 780 #  define PNG_POINTER_INDEXING_SUPPORTED
 781 #endif
 782
 783
 784 /* Any chunks you are not interested in, you can undef here.  The
 785  * ones that allocate memory may be expecially important (hIST,
 786  * tEXt, zTXt, tRNS, pCAL).  Others will just save time and make png_info
 787  * a bit smaller.
 788  */
 789
 790 /* The size of the png_text structure changed in libpng-1.0.6 when
 791  * iTXt support was added.  iTXt support was turned off by default through
 792  * libpng-1.2.x, to support old apps that malloc the png_text structure
 793  * instead of calling png_set_text() and letting libpng malloc it.  It
 794  * was turned on by default in libpng-1.4.0.
 795  */
 796
 797 /* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
 798 #if defined(PNG_READ_SUPPORTED) && \
 799     !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
 800     !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
 801 #  define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
 802 #endif
 803
 804 /* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
 805 #if defined(PNG_WRITE_SUPPORTED) && \
 806     !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
 807     !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
 808 #  define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
 809 #endif
 810
 811 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
 812
 813 #ifdef PNG_NO_READ_TEXT
 814 #  define PNG_NO_READ_iTXt
 815 #  define PNG_NO_READ_tEXt
 816 #  define PNG_NO_READ_zTXt
 817 #endif
 818
 819 #ifndef PNG_NO_READ_bKGD
 820 #  define PNG_READ_bKGD_SUPPORTED
 821 #  define PNG_bKGD_SUPPORTED
 822 #endif
 823 #ifndef PNG_NO_READ_cHRM
 824 #  define PNG_READ_cHRM_SUPPORTED
 825 #  define PNG_cHRM_SUPPORTED
 826 #endif
 827 #ifndef PNG_NO_READ_gAMA
 828 #  define PNG_READ_gAMA_SUPPORTED
 829 #  define PNG_gAMA_SUPPORTED
 830 #endif
 831 #ifndef PNG_NO_READ_hIST
 832 #  define PNG_READ_hIST_SUPPORTED
 833 #  define PNG_hIST_SUPPORTED
 834 #endif
 835 #ifndef PNG_NO_READ_iCCP
 836 #  define PNG_READ_iCCP_SUPPORTED
 837 #  define PNG_iCCP_SUPPORTED
 838 #endif
 839 #ifndef PNG_NO_READ_iTXt
 840 #  ifndef PNG_READ_iTXt_SUPPORTED
 841 #    define PNG_READ_iTXt_SUPPORTED
 842 #  endif
 843 #  ifndef PNG_iTXt_SUPPORTED
 844 #    define PNG_iTXt_SUPPORTED
 845 #  endif
 846 #endif
 847 #ifndef PNG_NO_READ_oFFs
 848 #  define PNG_READ_oFFs_SUPPORTED
 849 #  define PNG_oFFs_SUPPORTED
 850 #endif
 851 #ifndef PNG_NO_READ_pCAL
 852 #  define PNG_READ_pCAL_SUPPORTED
 853 #  define PNG_pCAL_SUPPORTED
 854 #endif
 855 #ifndef PNG_NO_READ_sCAL
 856 #  define PNG_READ_sCAL_SUPPORTED
 857 #  define PNG_sCAL_SUPPORTED
 858 #endif
 859 #ifndef PNG_NO_READ_pHYs
 860 #  define PNG_READ_pHYs_SUPPORTED
 861 #  define PNG_pHYs_SUPPORTED
 862 #endif
 863 #ifndef PNG_NO_READ_sBIT
 864 #  define PNG_READ_sBIT_SUPPORTED
 865 #  define PNG_sBIT_SUPPORTED
 866 #endif
 867 #ifndef PNG_NO_READ_sPLT
 868 #  define PNG_READ_sPLT_SUPPORTED
 869 #  define PNG_sPLT_SUPPORTED
 870 #endif
 871 #ifndef PNG_NO_READ_sRGB
 872 #  define PNG_READ_sRGB_SUPPORTED
 873 #  define PNG_sRGB_SUPPORTED
 874 #endif
 875 #ifndef PNG_NO_READ_tEXt
 876 #  define PNG_READ_tEXt_SUPPORTED
 877 #  define PNG_tEXt_SUPPORTED
 878 #endif
 879 #ifndef PNG_NO_READ_tIME
 880 #  define PNG_READ_tIME_SUPPORTED
 881 #  define PNG_tIME_SUPPORTED
 882 #endif
 883 #ifndef PNG_NO_READ_tRNS
 884 #  define PNG_READ_tRNS_SUPPORTED
 885 #  define PNG_tRNS_SUPPORTED
 886 #endif
 887 #ifndef PNG_NO_READ_zTXt
 888 #  define PNG_READ_zTXt_SUPPORTED
 889 #  define PNG_zTXt_SUPPORTED
 890 #endif
 891 #ifndef PNG_NO_READ_OPT_PLTE
 892 #  define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
 893 #endif                      /* optional PLTE chunk in RGB and RGBA images */
 894 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
 895     defined(PNG_READ_zTXt_SUPPORTED)
 896 #  define PNG_READ_TEXT_SUPPORTED
 897 #  define PNG_TEXT_SUPPORTED
 898 #endif
 899
 900 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
 901
 902 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
 903 #  ifndef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
 904 #    define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
 905 #  endif
 906 #  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
 907 #    define PNG_UNKNOWN_CHUNKS_SUPPORTED
 908 #  endif
 909 #  ifndef PNG_READ_USER_CHUNKS_SUPPORTED
 910 #    define PNG_READ_USER_CHUNKS_SUPPORTED
 911 #  endif
 912 #endif
 913 #ifndef PNG_NO_READ_USER_CHUNKS
 914 #  ifndef PNG_READ_USER_CHUNKS_SUPPORTED
 915 #    define PNG_READ_USER_CHUNKS_SUPPORTED
 916 #  endif
 917 #  ifndef PNG_USER_CHUNKS_SUPPORTED
 918 #    define PNG_USER_CHUNKS_SUPPORTED
 919 #  endif
 920 #endif
 921 #ifndef PNG_NO_HANDLE_AS_UNKNOWN
 922 #  ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
 923 #    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
 924 #  endif
 925 #endif
 926
 927 #ifdef PNG_WRITE_SUPPORTED
 928 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
 929
 930 #ifdef PNG_NO_WRITE_TEXT
 931 #  define PNG_NO_WRITE_iTXt
 932 #  define PNG_NO_WRITE_tEXt
 933 #  define PNG_NO_WRITE_zTXt
 934 #endif
 935 #ifndef PNG_NO_WRITE_bKGD
 936 #  define PNG_WRITE_bKGD_SUPPORTED
 937 #  ifndef PNG_bKGD_SUPPORTED
 938 #    define PNG_bKGD_SUPPORTED
 939 #  endif
 940 #endif
 941 #ifndef PNG_NO_WRITE_cHRM
 942 #  define PNG_WRITE_cHRM_SUPPORTED
 943 #  ifndef PNG_cHRM_SUPPORTED
 944 #    define PNG_cHRM_SUPPORTED
 945 #  endif
 946 #endif
 947 #ifndef PNG_NO_WRITE_gAMA
 948 #  define PNG_WRITE_gAMA_SUPPORTED
 949 #  ifndef PNG_gAMA_SUPPORTED
 950 #    define PNG_gAMA_SUPPORTED
 951 #  endif
 952 #endif
 953 #ifndef PNG_NO_WRITE_hIST
 954 #  define PNG_WRITE_hIST_SUPPORTED
 955 #  ifndef PNG_hIST_SUPPORTED
 956 #    define PNG_hIST_SUPPORTED
 957 #  endif
 958 #endif
 959 #ifndef PNG_NO_WRITE_iCCP
 960 #  define PNG_WRITE_iCCP_SUPPORTED
 961 #  ifndef PNG_iCCP_SUPPORTED
 962 #    define PNG_iCCP_SUPPORTED
 963 #  endif
 964 #endif
 965 #ifndef PNG_NO_WRITE_iTXt
 966 #  ifndef PNG_WRITE_iTXt_SUPPORTED
 967 #    define PNG_WRITE_iTXt_SUPPORTED
 968 #  endif
 969 #  ifndef PNG_iTXt_SUPPORTED
 970 #    define PNG_iTXt_SUPPORTED
 971 #  endif
 972 #endif
 973 #ifndef PNG_NO_WRITE_oFFs
 974 #  define PNG_WRITE_oFFs_SUPPORTED
 975 #  ifndef PNG_oFFs_SUPPORTED
 976 #    define PNG_oFFs_SUPPORTED
 977 #  endif
 978 #endif
 979 #ifndef PNG_NO_WRITE_pCAL
 980 #  define PNG_WRITE_pCAL_SUPPORTED
 981 #  ifndef PNG_pCAL_SUPPORTED
 982 #    define PNG_pCAL_SUPPORTED
 983 #  endif
 984 #endif
 985 #ifndef PNG_NO_WRITE_sCAL
 986 #  define PNG_WRITE_sCAL_SUPPORTED
 987 #  ifndef PNG_sCAL_SUPPORTED
 988 #    define PNG_sCAL_SUPPORTED
 989 #  endif
 990 #endif
 991 #ifndef PNG_NO_WRITE_pHYs
 992 #  define PNG_WRITE_pHYs_SUPPORTED
 993 #  ifndef PNG_pHYs_SUPPORTED
 994 #    define PNG_pHYs_SUPPORTED
 995 #  endif
 996 #endif
 997 #ifndef PNG_NO_WRITE_sBIT
 998 #  define PNG_WRITE_sBIT_SUPPORTED
 999 #  ifndef PNG_sBIT_SUPPORTED
1000 #    define PNG_sBIT_SUPPORTED
1001 #  endif
1002 #endif
1003 #ifndef PNG_NO_WRITE_sPLT
1004 #  define PNG_WRITE_sPLT_SUPPORTED
1005 #  ifndef PNG_sPLT_SUPPORTED
1006 #    define PNG_sPLT_SUPPORTED
1007 #  endif
1008 #endif
1009 #ifndef PNG_NO_WRITE_sRGB
1010 #  define PNG_WRITE_sRGB_SUPPORTED
1011 #  ifndef PNG_sRGB_SUPPORTED
1012 #    define PNG_sRGB_SUPPORTED
1013 #  endif
1014 #endif
1015 #ifndef PNG_NO_WRITE_tEXt
1016 #  define PNG_WRITE_tEXt_SUPPORTED
1017 #  ifndef PNG_tEXt_SUPPORTED
1018 #    define PNG_tEXt_SUPPORTED
1019 #  endif
1020 #endif
1021 #ifndef PNG_NO_WRITE_tIME
1022 #  define PNG_WRITE_tIME_SUPPORTED
1023 #  ifndef PNG_tIME_SUPPORTED
1024 #    define PNG_tIME_SUPPORTED
1025 #  endif
1026 #endif
1027 #ifndef PNG_NO_WRITE_tRNS
1028 #  define PNG_WRITE_tRNS_SUPPORTED
1029 #  ifndef PNG_tRNS_SUPPORTED
1030 #    define PNG_tRNS_SUPPORTED
1031 #  endif
1032 #endif
1033 #ifndef PNG_NO_WRITE_zTXt
1034 #  define PNG_WRITE_zTXt_SUPPORTED
1035 #  ifndef PNG_zTXt_SUPPORTED
1036 #    define PNG_zTXt_SUPPORTED
1037 #  endif
1038 #endif
1039 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
1040     defined(PNG_WRITE_zTXt_SUPPORTED)
1041 #  define PNG_WRITE_TEXT_SUPPORTED
1042 #  ifndef PNG_TEXT_SUPPORTED
1043 #    define PNG_TEXT_SUPPORTED
1044 #  endif
1045 #endif
1046
1047 #ifdef PNG_WRITE_tIME_SUPPORTED
1048 #  ifndef PNG_NO_CONVERT_tIME
1049 #    ifndef _WIN32_WCE
1050 /*   The "tm" structure is not supported on WindowsCE */
1051 #      ifndef PNG_CONVERT_tIME_SUPPORTED
1052 #        define PNG_CONVERT_tIME_SUPPORTED
1053 #      endif
1054 #   endif
1055 #  endif
1056 #endif
1057
1058 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
1059
1060 #ifndef PNG_NO_WRITE_FILTER
1061 #  ifndef PNG_WRITE_FILTER_SUPPORTED
1062 #    define PNG_WRITE_FILTER_SUPPORTED
1063 #  endif
1064 #endif
1065
1066 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
1067 #  define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1068 #  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
1069 #    define PNG_UNKNOWN_CHUNKS_SUPPORTED
1070 #  endif
1071 #endif
1072 #ifndef PNG_NO_HANDLE_AS_UNKNOWN
1073 #  ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1074 #    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
1075 #  endif
1076 #endif
1077 #endif /* PNG_WRITE_SUPPORTED */
1078
1079 /* Turn this off to disable png_read_png() and
1080  * png_write_png() and leave the row_pointers member
1081  * out of the info structure.
1082  */
1083 #ifndef PNG_NO_INFO_IMAGE
1084 #  define PNG_INFO_IMAGE_SUPPORTED
1085 #endif
1086
1087 /* Need the time information for converting tIME chunks */
1088 #ifdef PNG_CONVERT_tIME_SUPPORTED
1089      /* "time.h" functions are not supported on WindowsCE */
1090 #    include <time.h>
1091 #endif
1092
1093 /* Some typedefs to get us started.  These should be safe on most of the
1094  * common platforms.  The typedefs should be at least as large as the
1095  * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
1096  * don't have to be exactly that size.  Some compilers dislike passing
1097  * unsigned shorts as function parameters, so you may be better off using
1098  * unsigned int for png_uint_16.
1099  */
1100
1101 #if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL)
1102 typedef unsigned int png_uint_32;
1103 typedef int png_int_32;
1104 #else
1105 typedef unsigned long png_uint_32;
1106 typedef long png_int_32;
1107 #endif
1108 typedef unsigned short png_uint_16;
1109 typedef short png_int_16;
1110 typedef unsigned char png_byte;
1111
1112 #ifdef PNG_NO_SIZE_T
1113    typedef unsigned int png_size_t;
1114 #else
1115    typedef size_t png_size_t;
1116 #endif
1117 #define png_sizeof(x) sizeof(x)
1118
1119 /* The following is needed for medium model support.  It cannot be in the
1120  * pngpriv.h header.  Needs modification for other compilers besides
1121  * MSC.  Model independent support declares all arrays and pointers to be
1122  * large using the far keyword.  The zlib version used must also support
1123  * model independent data.  As of version zlib 1.0.4, the necessary changes
1124  * have been made in zlib.  The USE_FAR_KEYWORD define triggers other
1125  * changes that are needed. (Tim Wegner)
1126  */
1127
1128 /* Separate compiler dependencies (problem here is that zlib.h always
1129  * defines FAR. (SJT)
1130  */
1131 #ifdef __BORLANDC__
1132 #  if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
1133 #    define LDATA 1
1134 #  else
1135 #    define LDATA 0
1136 #  endif
1137    /* GRR:  why is Cygwin in here?  Cygwin is not Borland C... */
1138 #  if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
1139 #    define PNG_MAX_MALLOC_64K
1140 #    if (LDATA != 1)
1141 #      ifndef FAR
1142 #        define FAR __far
1143 #      endif
1144 #      define USE_FAR_KEYWORD
1145 #    endif   /* LDATA != 1 */
1146      /* Possibly useful for moving data out of default segment.
1147       * Uncomment it if you want. Could also define FARDATA as
1148       * const if your compiler supports it. (SJT)
1149 #    define FARDATA FAR
1150       */
1151 #  endif  /* __WIN32__, __FLAT__, __CYGWIN__ */
1152 #endif   /* __BORLANDC__ */
1153
1154
1155 /* Suggest testing for specific compiler first before testing for
1156  * FAR.  The Watcom compiler defines both __MEDIUM__ and M_I86MM,
1157  * making reliance oncertain keywords suspect. (SJT)
1158  */
1159
1160 /* MSC Medium model */
1161 #ifdef FAR
1162 #  ifdef M_I86MM
1163 #    define USE_FAR_KEYWORD
1164 #    define FARDATA FAR
1165 #    include <dos.h>
1166 #  endif
1167 #endif
1168
1169 /* SJT: default case */
1170 #ifndef FAR
1171 #  define FAR
1172 #endif
1173
1174 /* At this point FAR is always defined */
1175 #ifndef FARDATA
1176 #  define FARDATA
1177 #endif
1178
1179 /* Typedef for floating-point numbers that are converted
1180    to fixed-point with a multiple of 100,000, e.g., int_gamma */
1181 typedef png_int_32 png_fixed_point;
1182
1183 /* Add typedefs for pointers */
1184 typedef void            FAR * png_voidp;
1185 typedef png_byte        FAR * png_bytep;
1186 typedef png_uint_32     FAR * png_uint_32p;
1187 typedef png_int_32      FAR * png_int_32p;
1188 typedef png_uint_16     FAR * png_uint_16p;
1189 typedef png_int_16      FAR * png_int_16p;
1190 typedef PNG_CONST char  FAR * png_const_charp;
1191 typedef char            FAR * png_charp;
1192 typedef png_fixed_point FAR * png_fixed_point_p;
1193
1194 #ifndef PNG_NO_STDIO
1195 typedef FILE                * png_FILE_p;
1196 #endif
1197
1198 #ifdef PNG_FLOATING_POINT_SUPPORTED
1199 typedef double          FAR * png_doublep;
1200 #endif
1201
1202 /* Pointers to pointers; i.e. arrays */
1203 typedef png_byte        FAR * FAR * png_bytepp;
1204 typedef png_uint_32     FAR * FAR * png_uint_32pp;
1205 typedef png_int_32      FAR * FAR * png_int_32pp;
1206 typedef png_uint_16     FAR * FAR * png_uint_16pp;
1207 typedef png_int_16      FAR * FAR * png_int_16pp;
1208 typedef PNG_CONST char  FAR * FAR * png_const_charpp;
1209 typedef char            FAR * FAR * png_charpp;
1210 typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
1211 #ifdef PNG_FLOATING_POINT_SUPPORTED
1212 typedef double          FAR * FAR * png_doublepp;
1213 #endif
1214
1215 /* Pointers to pointers to pointers; i.e., pointer to array */
1216 typedef char            FAR * FAR * FAR * png_charppp;
1217
1218 /* Define PNG_BUILD_DLL if the module being built is a Windows
1219  * LIBPNG DLL.
1220  *
1221  * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
1222  * It is equivalent to Microsoft predefined macro _DLL that is
1223  * automatically defined when you compile using the share
1224  * version of the CRT (C Run-Time library)
1225  *
1226  * The cygwin mods make this behavior a little different:
1227  * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
1228  * Define PNG_STATIC if you are building a static library for use with cygwin,
1229  *   -or- if you are building an application that you want to link to the
1230  *   static library.
1231  * PNG_USE_DLL is defined by default (no user action needed) unless one of
1232  *   the other flags is defined.
1233  */
1234
1235 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
1236 #  define PNG_DLL
1237 #endif
1238
1239 #ifdef __CYGWIN__
1240 #  undef PNGAPI
1241 #  define PNGAPI __cdecl
1242 #  undef PNG_IMPEXP
1243 #  define PNG_IMPEXP
1244 #endif
1245
1246 #define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
1247
1248 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
1249  * you may get warnings regarding the linkage of png_zalloc and png_zfree.
1250  * Don't ignore those warnings; you must also reset the default calling
1251  * convention in your compiler to match your PNGAPI, and you must build
1252  * zlib and your applications the same way you build libpng.
1253  */
1254
1255 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
1256 #  ifndef PNG_NO_MODULEDEF
1257 #    define PNG_NO_MODULEDEF
1258 #  endif
1259 #endif
1260
1261 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
1262 #  define PNG_IMPEXP
1263 #endif
1264
1265 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
1266     (( defined(_Windows) || defined(_WINDOWS) || \
1267        defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
1268
1269 #  ifndef PNGAPI
1270 #     if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
1271 #        define PNGAPI __cdecl
1272 #     else
1273 #        define PNGAPI _cdecl
1274 #     endif
1275 #  endif
1276
1277 #  if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
1278        0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
1279 #     define PNG_IMPEXP
1280 #  endif
1281
1282 #  ifndef PNG_IMPEXP
1283
1284 #    define PNG_EXPORT_TYPE1(type,symbol)  PNG_IMPEXP type PNGAPI symbol
1285 #    define PNG_EXPORT_TYPE2(type,symbol)  type PNG_IMPEXP PNGAPI symbol
1286
1287      /* Borland/Microsoft */
1288 #    if defined(_MSC_VER) || defined(__BORLANDC__)
1289 #      if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
1290 #         define PNG_EXPORT PNG_EXPORT_TYPE1
1291 #      else
1292 #         define PNG_EXPORT PNG_EXPORT_TYPE2
1293 #         ifdef PNG_BUILD_DLL
1294 #            define PNG_IMPEXP __export
1295 #         else
1296 #            define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in VC++ */
1297 #         endif                              /* Exists in Borland C++ for
1298                                                 C++ classes (== huge) */
1299 #      endif
1300 #    endif
1301
1302 #    ifndef PNG_IMPEXP
1303 #      ifdef PNG_BUILD_DLL
1304 #        define PNG_IMPEXP __declspec(dllexport)
1305 #      else
1306 #        define PNG_IMPEXP __declspec(dllimport)
1307 #      endif
1308 #    endif
1309 #  endif  /* PNG_IMPEXP */
1310 #else /* !(DLL || non-cygwin WINDOWS) */
1311 #   if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
1312 #     ifndef PNGAPI
1313 #       define PNGAPI _System
1314 #     endif
1315 #   else
1316 #     if 0 /* ... other platforms, with other meanings */
1317 #     endif
1318 #   endif
1319 #endif
1320
1321 #ifndef PNGAPI
1322 #  define PNGAPI
1323 #endif
1324 #ifndef PNG_IMPEXP
1325 #  define PNG_IMPEXP
1326 #endif
1327
1328 #ifdef PNG_BUILDSYMS
1329 #  ifndef PNG_EXPORT
1330 #    define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
1331 #  endif
1332 #endif
1333
1334 #ifndef PNG_EXPORT
1335 #  define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
1336 #endif
1337
1338 /* Support for compiler specific function attributes.  These are used
1339  * so that where compiler support is available incorrect use of API
1340  * functions in png.h will generate compiler warnings.
1341  *
1342  * Added at libpng-1.2.41.
1343  */
1344
1345 #ifndef PNG_NO_PEDANTIC_WARNINGS
1346 #  ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
1347 #    define PNG_PEDANTIC_WARNINGS_SUPPORTED
1348 #  endif
1349 #endif
1350
1351 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
1352 /* Support for compiler specific function attributes.  These are used
1353  * so that where compiler support is available incorrect use of API
1354  * functions in png.h will generate compiler warnings.  Added at libpng
1355  * version 1.2.41.
1356  */
1357 #  ifdef __GNUC__
1358 #    ifndef PNG_USE_RESULT
1359 #      define PNG_USE_RESULT __attribute__((__warn_unused_result__))
1360 #    endif
1361 #    ifndef PNG_NORETURN
1362 #      define PNG_NORETURN   __attribute__((__noreturn__))
1363 #    endif
1364 #    ifndef PNG_ALLOCATED
1365 #      define PNG_ALLOCATED  __attribute__((__malloc__))
1366 #    endif
1367
1368     /* This specifically protects structure members that should only be
1369      * accessed from within the library, therefore should be empty during
1370      * a library build.
1371      */
1372 #    ifndef PNG_DEPRECATED
1373 #      define PNG_DEPRECATED __attribute__((__deprecated__))
1374 #    endif
1375 #    ifndef PNG_DEPSTRUCT
1376 #      define PNG_DEPSTRUCT  __attribute__((__deprecated__))
1377 #    endif
1378 #    ifndef PNG_PRIVATE
1379 #      if 0 /* Doesn't work so we use deprecated instead*/
1380 #        define PNG_PRIVATE \
1381           __attribute__((warning("This function is not exported by libpng.")))
1382 #      else
1383 #        define PNG_PRIVATE \
1384           __attribute__((__deprecated__))
1385 #      endif
1386 #    endif /* PNG_PRIVATE */
1387 #  endif /* __GNUC__ */
1388 #endif /* PNG_PEDANTIC_WARNINGS */
1389
1390 #ifndef PNG_DEPRECATED
1391 #  define PNG_DEPRECATED  /* Use of this function is deprecated */
1392 #endif
1393 #ifndef PNG_USE_RESULT
1394 #  define PNG_USE_RESULT  /* The result of this function must be checked */
1395 #endif
1396 #ifndef PNG_NORETURN
1397 #  define PNG_NORETURN    /* This function does not return */
1398 #endif
1399 #ifndef PNG_ALLOCATED
1400 #  define PNG_ALLOCATED   /* The result of the function is new memory */
1401 #endif
1402 #ifndef PNG_DEPSTRUCT
1403 #  define PNG_DEPSTRUCT   /* Access to this struct member is deprecated */
1404 #endif
1405 #ifndef PNG_PRIVATE
1406 #  define PNG_PRIVATE     /* This is a private libpng function */
1407 #endif
1408
1409 /* Users may want to use these so they are not private.  Any library
1410  * functions that are passed far data must be model-independent.
1411  */
1412
1413 /* memory model/platform independent fns */
1414 #ifndef PNG_ABORT
1415 #  ifdef _WINDOWS_
1416 #     define PNG_ABORT() ExitProcess(0)
1417 #  else
1418 #     define PNG_ABORT() abort()
1419 #  endif
1420 #endif
1421
1422 #ifdef USE_FAR_KEYWORD
1423 /* Use this to make far-to-near assignments */
1424 #  define CHECK   1
1425 #  define NOCHECK 0
1426 #  define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
1427 #  define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
1428 #  define png_strcpy  _fstrcpy
1429 #  define png_strncpy _fstrncpy   /* Added to v 1.2.6 */
1430 #  define png_strlen  _fstrlen
1431 #  define png_memcmp  _fmemcmp    /* SJT: added */
1432 #  define png_memcpy  _fmemcpy
1433 #  define png_memset  _fmemset
1434 #  define png_sprintf sprintf
1435 #else
1436 #  ifdef _WINDOWS_  /* Favor Windows over C runtime fns */
1437 #    define CVT_PTR(ptr)         (ptr)
1438 #    define CVT_PTR_NOCHECK(ptr) (ptr)
1439 #    define png_strcpy  lstrcpyA
1440 #    define png_strncpy lstrcpynA
1441 #    define png_strlen  lstrlenA
1442 #    define png_memcmp  memcmp
1443 #    define png_memcpy  CopyMemory
1444 #    define png_memset  memset
1445 #    define png_sprintf wsprintfA
1446 #  else
1447 #    define CVT_PTR(ptr)         (ptr)
1448 #    define CVT_PTR_NOCHECK(ptr) (ptr)
1449 #    define png_strcpy  strcpy
1450 #    define png_strncpy strncpy     /* Added to v 1.2.6 */
1451 #    define png_strlen  strlen
1452 #    define png_memcmp  memcmp      /* SJT: added */
1453 #    define png_memcpy  memcpy
1454 #    define png_memset  memset
1455 #    define png_sprintf sprintf
1456 #    ifndef PNG_NO_SNPRINTF
1457 #      ifdef _MSC_VER
1458 #        define png_snprintf _snprintf   /* Added to v 1.2.19 */
1459 #        define png_snprintf2 _snprintf
1460 #        define png_snprintf6 _snprintf
1461 #      else
1462 #        define png_snprintf snprintf   /* Added to v 1.2.19 */
1463 #        define png_snprintf2 snprintf
1464 #        define png_snprintf6 snprintf
1465 #      endif
1466 #    else
1467        /* You don't have or don't want to use snprintf().  Caution: Using
1468         * sprintf instead of snprintf exposes your application to accidental
1469         * or malevolent buffer overflows.  If you don't have snprintf()
1470         * as a general rule you should provide one (you can get one from
1471         * Portable OpenSSH).
1472         */
1473 #      define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
1474 #      define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
1475 #      define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
1476           sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
1477 #    endif
1478 #  endif
1479 #endif
1480
1481 /* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
1482  * and no smaller than png_uint_32.  Casts from png_size_t or png_uint_32
1483  * to png_alloc_size_t are not necessary; in fact, it is recommended
1484  * not to use them at all so that the compiler can complain when something
1485  * turns out to be problematic.
1486  * Casts in the other direction (from png_alloc_size_t to png_size_t or
1487  * png_uint_32) should be explicitly applied; however, we do not expect
1488  * to encounter practical situations that require such conversions.
1489  */
1490 #if defined(__TURBOC__) && !defined(__FLAT__)
1491 #  define  png_mem_alloc farmalloc
1492 #  define  png_mem_free  farfree
1493    typedef unsigned long png_alloc_size_t;
1494 #else
1495 #  if defined(_MSC_VER) && defined(MAXSEG_64K)
1496 #    define  png_mem_alloc(s) halloc(s, 1)
1497 #    define  png_mem_free     hfree
1498      typedef unsigned long    png_alloc_size_t;
1499 #  else
1500 #    if defined(_WINDOWS_) && (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
1501 #      define  png_mem_alloc(s) HeapAlloc(GetProcessHeap(), 0, s)
1502 #      define  png_mem_free(p)  HeapFree(GetProcessHeap(), 0, p)
1503        typedef DWORD            png_alloc_size_t;
1504 #    else
1505 #      define  png_mem_alloc malloc
1506 #      define  png_mem_free  free
1507        typedef png_size_t    png_alloc_size_t;
1508 #    endif
1509 #  endif
1510 #endif
1511 /* End of memory model/platform independent support */
1512
1513 /* Just a little check that someone hasn't tried to define something
1514  * contradictory.
1515  */
1516 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
1517 #  undef PNG_ZBUF_SIZE
1518 #  define PNG_ZBUF_SIZE 65536L
1519 #endif
1520
1521
1522 /* Added at libpng-1.2.8 */
1523 #endif /* PNG_VERSION_INFO_ONLY */
1524
1525 #endif /* PNGCONF_H */