1 2 /* pngconf.h - machine configurable file for libpng 3 * 4 * libpng version 1.6.10 - March 6, 2014 5 * 6 * Copyright (c) 1998-2013 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 /* To do: Do all of this in scripts/pnglibconf.dfa */ 26 #ifdef PNG_SAFE_LIMITS_SUPPORTED 27 # ifdef PNG_USER_WIDTH_MAX 28 # undef PNG_USER_WIDTH_MAX 29 # define PNG_USER_WIDTH_MAX 1000000L 30 # endif 31 # ifdef PNG_USER_HEIGHT_MAX 32 # undef PNG_USER_HEIGHT_MAX 33 # define PNG_USER_HEIGHT_MAX 1000000L 34 # endif 35 # ifdef PNG_USER_CHUNK_MALLOC_MAX 36 # undef PNG_USER_CHUNK_MALLOC_MAX 37 # define PNG_USER_CHUNK_MALLOC_MAX 4000000L 38 # endif 39 # ifdef PNG_USER_CHUNK_CACHE_MAX 40 # undef PNG_USER_CHUNK_CACHE_MAX 41 # define PNG_USER_CHUNK_CACHE_MAX 128 42 # endif 43 #endif 44 45 #ifndef PNG_BUILDING_SYMBOL_TABLE /* else includes may cause problems */ 46 47 /* From libpng 1.6.0 libpng requires an ANSI X3.159-1989 ("ISOC90") compliant C 48 * compiler for correct compilation. The following header files are required by 49 * the standard. If your compiler doesn't provide these header files, or they 50 * do not match the standard, you will need to provide/improve them. 51 */ 52 #include <limits.h> 53 #include <stddef.h> 54 55 /* Library header files. These header files are all defined by ISOC90; libpng 56 * expects conformant implementations, however, an ISOC90 conformant system need 57 * not provide these header files if the functionality cannot be implemented. 58 * In this case it will be necessary to disable the relevant parts of libpng in 59 * the build of pnglibconf.h. 60 * 61 * Prior to 1.6.0 string.h was included here; the API changes in 1.6.0 to not 62 * include this unnecessary header file. 63 */ 64 65 #ifdef PNG_STDIO_SUPPORTED 66 /* Required for the definition of FILE: */ 67 # include <stdio.h> 68 #endif 69 70 #ifdef PNG_SETJMP_SUPPORTED 71 /* Required for the definition of jmp_buf and the declaration of longjmp: */ 72 # include <setjmp.h> 73 #endif 74 75 #ifdef PNG_CONVERT_tIME_SUPPORTED 76 /* Required for struct tm: */ 77 # include <time.h> 78 #endif 79 80 #endif /* PNG_BUILDING_SYMBOL_TABLE */ 81 82 /* Prior to 1.6.0 it was possible to turn off 'const' in declarations using 83 * PNG_NO_CONST; this is no longer supported except for data declarations which 84 * apparently still cause problems in 2011 on some compilers. 85 */ 86 #define PNG_CONST const /* backward compatibility only */ 87 88 /* This controls optimization of the reading of 16 and 32 bit values 89 * from PNG files. It can be set on a per-app-file basis - it 90 * just changes whether a macro is used when the function is called. 91 * The library builder sets the default; if read functions are not 92 * built into the library the macro implementation is forced on. 93 */ 94 #ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED 95 # define PNG_USE_READ_MACROS 96 #endif 97 #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS) 98 # if PNG_DEFAULT_READ_MACROS 99 # define PNG_USE_READ_MACROS 100 # endif 101 #endif 102 103 /* COMPILER SPECIFIC OPTIONS. 104 * 105 * These options are provided so that a variety of difficult compilers 106 * can be used. Some are fixed at build time (e.g. PNG_API_RULE 107 * below) but still have compiler specific implementations, others 108 * may be changed on a per-file basis when compiling against libpng. 109 */ 110 111 /* The PNGARG macro was used in versions of libpng prior to 1.6.0 to protect 112 * against legacy (pre ISOC90) compilers that did not understand function 113 * prototypes. It is not required for modern C compilers. 114 */ 115 #ifndef PNGARG 116 # define PNGARG(arglist) arglist 117 #endif 118 119 /* Function calling conventions. 120 * ============================= 121 * Normally it is not necessary to specify to the compiler how to call 122 * a function - it just does it - however on x86 systems derived from 123 * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems 124 * and some others) there are multiple ways to call a function and the 125 * default can be changed on the compiler command line. For this reason 126 * libpng specifies the calling convention of every exported function and 127 * every function called via a user supplied function pointer. This is 128 * done in this file by defining the following macros: 129 * 130 * PNGAPI Calling convention for exported functions. 131 * PNGCBAPI Calling convention for user provided (callback) functions. 132 * PNGCAPI Calling convention used by the ANSI-C library (required 133 * for longjmp callbacks and sometimes used internally to 134 * specify the calling convention for zlib). 135 * 136 * These macros should never be overridden. If it is necessary to 137 * change calling convention in a private build this can be done 138 * by setting PNG_API_RULE (which defaults to 0) to one of the values 139 * below to select the correct 'API' variants. 140 * 141 * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout. 142 * This is correct in every known environment. 143 * PNG_API_RULE=1 Use the operating system convention for PNGAPI and 144 * the 'C' calling convention (from PNGCAPI) for 145 * callbacks (PNGCBAPI). This is no longer required 146 * in any known environment - if it has to be used 147 * please post an explanation of the problem to the 148 * libpng mailing list. 149 * 150 * These cases only differ if the operating system does not use the C 151 * calling convention, at present this just means the above cases 152 * (x86 DOS/Windows sytems) and, even then, this does not apply to 153 * Cygwin running on those systems. 154 * 155 * Note that the value must be defined in pnglibconf.h so that what 156 * the application uses to call the library matches the conventions 157 * set when building the library. 158 */ 159 160 /* Symbol export 161 * ============= 162 * When building a shared library it is almost always necessary to tell 163 * the compiler which symbols to export. The png.h macro 'PNG_EXPORT' 164 * is used to mark the symbols. On some systems these symbols can be 165 * extracted at link time and need no special processing by the compiler, 166 * on other systems the symbols are flagged by the compiler and just 167 * the declaration requires a special tag applied (unfortunately) in a 168 * compiler dependent way. Some systems can do either. 169 * 170 * A small number of older systems also require a symbol from a DLL to 171 * be flagged to the program that calls it. This is a problem because 172 * we do not know in the header file included by application code that 173 * the symbol will come from a shared library, as opposed to a statically 174 * linked one. For this reason the application must tell us by setting 175 * the magic flag PNG_USE_DLL to turn on the special processing before 176 * it includes png.h. 177 * 178 * Four additional macros are used to make this happen: 179 * 180 * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from 181 * the build or imported if PNG_USE_DLL is set - compiler 182 * and system specific. 183 * 184 * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to 185 * 'type', compiler specific. 186 * 187 * PNG_DLL_EXPORT Set to the magic to use during a libpng build to 188 * make a symbol exported from the DLL. Not used in the 189 * public header files; see pngpriv.h for how it is used 190 * in the libpng build. 191 * 192 * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come 193 * from a DLL - used to define PNG_IMPEXP when 194 * PNG_USE_DLL is set. 195 */ 196 197 /* System specific discovery. 198 * ========================== 199 * This code is used at build time to find PNG_IMPEXP, the API settings 200 * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL 201 * import processing is possible. On Windows systems it also sets 202 * compiler-specific macros to the values required to change the calling 203 * conventions of the various functions. 204 */ 205 #if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\ 206 defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) 207 /* Windows system (DOS doesn't support DLLs). Includes builds under Cygwin or 208 * MinGW on any architecture currently supported by Windows. Also includes 209 * Watcom builds but these need special treatment because they are not 210 * compatible with GCC or Visual C because of different calling conventions. 211 */ 212 # if PNG_API_RULE == 2 213 /* If this line results in an error, either because __watcall is not 214 * understood or because of a redefine just below you cannot use *this* 215 * build of the library with the compiler you are using. *This* build was 216 * build using Watcom and applications must also be built using Watcom! 217 */ 218 # define PNGCAPI __watcall 219 # endif 220 221 # if defined(__GNUC__) || (defined(_MSC_VER) && (_MSC_VER >= 800)) 222 # define PNGCAPI __cdecl 223 # if PNG_API_RULE == 1 224 /* If this line results in an error __stdcall is not understood and 225 * PNG_API_RULE should not have been set to '1'. 226 */ 227 # define PNGAPI __stdcall 228 # endif 229 # else 230 /* An older compiler, or one not detected (erroneously) above, 231 * if necessary override on the command line to get the correct 232 * variants for the compiler. 233 */ 234 # ifndef PNGCAPI 235 # define PNGCAPI _cdecl 236 # endif 237 # if PNG_API_RULE == 1 && !defined(PNGAPI) 238 # define PNGAPI _stdcall 239 # endif 240 # endif /* compiler/api */ 241 242 /* NOTE: PNGCBAPI always defaults to PNGCAPI. */ 243 244 # if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD) 245 # error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed" 246 # endif 247 248 # if (defined(_MSC_VER) && _MSC_VER < 800) ||\ 249 (defined(__BORLANDC__) && __BORLANDC__ < 0x500) 250 /* older Borland and MSC 251 * compilers used '__export' and required this to be after 252 * the type. 253 */ 254 # ifndef PNG_EXPORT_TYPE 255 # define PNG_EXPORT_TYPE(type) type PNG_IMPEXP 256 # endif 257 # define PNG_DLL_EXPORT __export 258 # else /* newer compiler */ 259 # define PNG_DLL_EXPORT __declspec(dllexport) 260 # ifndef PNG_DLL_IMPORT 261 # define PNG_DLL_IMPORT __declspec(dllimport) 262 # endif 263 # endif /* compiler */ 264 265 #else /* !Windows */ 266 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 267 # define PNGAPI _System 268 # else /* !Windows/x86 && !OS/2 */ 269 /* Use the defaults, or define PNG*API on the command line (but 270 * this will have to be done for every compile!) 271 */ 272 # endif /* other system, !OS/2 */ 273 #endif /* !Windows/x86 */ 274 275 /* Now do all the defaulting . */ 276 #ifndef PNGCAPI 277 # define PNGCAPI 278 #endif 279 #ifndef PNGCBAPI 280 # define PNGCBAPI PNGCAPI 281 #endif 282 #ifndef PNGAPI 283 # define PNGAPI PNGCAPI 284 #endif 285 286 /* PNG_IMPEXP may be set on the compilation system command line or (if not set) 287 * then in an internal header file when building the library, otherwise (when 288 * using the library) it is set here. 289 */ 290 #ifndef PNG_IMPEXP 291 # if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT) 292 /* This forces use of a DLL, disallowing static linking */ 293 # define PNG_IMPEXP PNG_DLL_IMPORT 294 # endif 295 296 # ifndef PNG_IMPEXP 297 # define PNG_IMPEXP 298 # endif 299 #endif 300 301 /* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat 302 * 'attributes' as a storage class - the attributes go at the start of the 303 * function definition, and attributes are always appended regardless of the 304 * compiler. This considerably simplifies these macros but may cause problems 305 * if any compilers both need function attributes and fail to handle them as 306 * a storage class (this is unlikely.) 307 */ 308 #ifndef PNG_FUNCTION 309 # define PNG_FUNCTION(type, name, args, attributes) attributes type name args 310 #endif 311 312 #ifndef PNG_EXPORT_TYPE 313 # define PNG_EXPORT_TYPE(type) PNG_IMPEXP type 314 #endif 315 316 /* The ordinal value is only relevant when preprocessing png.h for symbol 317 * table entries, so we discard it here. See the .dfn files in the 318 * scripts directory. 319 */ 320 #ifndef PNG_EXPORTA 321 322 # define PNG_EXPORTA(ordinal, type, name, args, attributes)\ 323 PNG_FUNCTION(PNG_EXPORT_TYPE(type),(PNGAPI name),PNGARG(args), \ 324 extern attributes) 325 #endif 326 327 /* ANSI-C (C90) does not permit a macro to be invoked with an empty argument, 328 * so make something non-empty to satisfy the requirement: 329 */ 330 #define PNG_EMPTY /*empty list*/ 331 332 #define PNG_EXPORT(ordinal, type, name, args)\ 333 PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY) 334 335 /* Use PNG_REMOVED to comment out a removed interface. */ 336 #ifndef PNG_REMOVED 337 # define PNG_REMOVED(ordinal, type, name, args, attributes) 338 #endif 339 340 #ifndef PNG_CALLBACK 341 # define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args) 342 #endif 343 344 /* Support for compiler specific function attributes. These are used 345 * so that where compiler support is available incorrect use of API 346 * functions in png.h will generate compiler warnings. 347 * 348 * Added at libpng-1.2.41. 349 */ 350 351 #ifndef PNG_NO_PEDANTIC_WARNINGS 352 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED 353 # define PNG_PEDANTIC_WARNINGS_SUPPORTED 354 # endif 355 #endif 356 357 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED 358 /* Support for compiler specific function attributes. These are used 359 * so that where compiler support is available, incorrect use of API 360 * functions in png.h will generate compiler warnings. Added at libpng 361 * version 1.2.41. Disabling these removes the warnings but may also produce 362 * less efficient code. 363 */ 364 # if defined(__clang__) 365 /* Clang defines both __clang__ and __GNUC__. Check __clang__ first. */ 366 # if !defined(PNG_USE_RESULT) && __has_attribute(__warn_unused_result__) 367 # define PNG_USE_RESULT __attribute__((__warn_unused_result__)) 368 # endif 369 # if !defined(PNG_NORETURN) && __has_attribute(__noreturn__) 370 # define PNG_NORETURN __attribute__((__noreturn__)) 371 # endif 372 # if !defined(PNG_ALLOCATED) && __has_attribute(__malloc__) 373 # define PNG_ALLOCATED __attribute__((__malloc__)) 374 # endif 375 # if !defined(PNG_DEPRECATED) && __has_attribute(__deprecated__) 376 # define PNG_DEPRECATED __attribute__((__deprecated__)) 377 # endif 378 # if !defined(PNG_PRIVATE) 379 # ifdef __has_extension 380 # if __has_extension(attribute_unavailable_with_message) 381 # define PNG_PRIVATE __attribute__((__unavailable__(\ 382 "This function is not exported by libpng."))) 383 # endif 384 # endif 385 # endif 386 # ifndef PNG_RESTRICT 387 # define PNG_RESTRICT __restrict 388 # endif 389 390 # elif defined(__GNUC__) 391 # ifndef PNG_USE_RESULT 392 # define PNG_USE_RESULT __attribute__((__warn_unused_result__)) 393 # endif 394 # ifndef PNG_NORETURN 395 # define PNG_NORETURN __attribute__((__noreturn__)) 396 # endif 397 # if __GNUC__ >= 3 398 # ifndef PNG_ALLOCATED 399 # define PNG_ALLOCATED __attribute__((__malloc__)) 400 # endif 401 # ifndef PNG_DEPRECATED 402 # define PNG_DEPRECATED __attribute__((__deprecated__)) 403 # endif 404 # ifndef PNG_PRIVATE 405 # if 0 /* Doesn't work so we use deprecated instead*/ 406 # define PNG_PRIVATE \ 407 __attribute__((warning("This function is not exported by libpng."))) 408 # else 409 # define PNG_PRIVATE \ 410 __attribute__((__deprecated__)) 411 # endif 412 # endif 413 # if ((__GNUC__ > 3) || !defined(__GNUC_MINOR__) || (__GNUC_MINOR__ >= 1)) 414 # ifndef PNG_RESTRICT 415 # define PNG_RESTRICT __restrict 416 # endif 417 # endif /* __GNUC__.__GNUC_MINOR__ > 3.0 */ 418 # endif /* __GNUC__ >= 3 */ 419 420 # elif defined(_MSC_VER) && (_MSC_VER >= 1300) 421 # ifndef PNG_USE_RESULT 422 # define PNG_USE_RESULT /* not supported */ 423 # endif 424 # ifndef PNG_NORETURN 425 # define PNG_NORETURN __declspec(noreturn) 426 # endif 427 # ifndef PNG_ALLOCATED 428 # if (_MSC_VER >= 1400) 429 # define PNG_ALLOCATED __declspec(restrict) 430 # endif 431 # endif 432 # ifndef PNG_DEPRECATED 433 # define PNG_DEPRECATED __declspec(deprecated) 434 # endif 435 # ifndef PNG_PRIVATE 436 # define PNG_PRIVATE __declspec(deprecated) 437 # endif 438 # ifndef PNG_RESTRICT 439 # if (_MSC_VER >= 1400) 440 # define PNG_RESTRICT __restrict 441 # endif 442 # endif 443 444 # elif defined(__WATCOMC__) 445 # ifndef PNG_RESTRICT 446 # define PNG_RESTRICT __restrict 447 # endif 448 # endif 449 #endif /* PNG_PEDANTIC_WARNINGS */ 450 451 #ifndef PNG_DEPRECATED 452 # define PNG_DEPRECATED /* Use of this function is deprecated */ 453 #endif 454 #ifndef PNG_USE_RESULT 455 # define PNG_USE_RESULT /* The result of this function must be checked */ 456 #endif 457 #ifndef PNG_NORETURN 458 # define PNG_NORETURN /* This function does not return */ 459 #endif 460 #ifndef PNG_ALLOCATED 461 # define PNG_ALLOCATED /* The result of the function is new memory */ 462 #endif 463 #ifndef PNG_PRIVATE 464 # define PNG_PRIVATE /* This is a private libpng function */ 465 #endif 466 #ifndef PNG_RESTRICT 467 # define PNG_RESTRICT /* The C99 "restrict" feature */ 468 #endif 469 470 #ifndef PNG_FP_EXPORT /* A floating point API. */ 471 # ifdef PNG_FLOATING_POINT_SUPPORTED 472 # define PNG_FP_EXPORT(ordinal, type, name, args)\ 473 PNG_EXPORT(ordinal, type, name, args); 474 # else /* No floating point APIs */ 475 # define PNG_FP_EXPORT(ordinal, type, name, args) 476 # endif 477 #endif 478 #ifndef PNG_FIXED_EXPORT /* A fixed point API. */ 479 # ifdef PNG_FIXED_POINT_SUPPORTED 480 # define PNG_FIXED_EXPORT(ordinal, type, name, args)\ 481 PNG_EXPORT(ordinal, type, name, args); 482 # else /* No fixed point APIs */ 483 # define PNG_FIXED_EXPORT(ordinal, type, name, args) 484 # endif 485 #endif 486 487 #ifndef PNG_BUILDING_SYMBOL_TABLE 488 /* Some typedefs to get us started. These should be safe on most of the common 489 * platforms. 490 * 491 * png_uint_32 and png_int_32 may, currently, be larger than required to hold a 492 * 32-bit value however this is not normally advisable. 493 * 494 * png_uint_16 and png_int_16 should always be two bytes in size - this is 495 * verified at library build time. 496 * 497 * png_byte must always be one byte in size. 498 * 499 * The checks below use constants from limits.h, as defined by the ISOC90 500 * standard. 501 */ 502 #if CHAR_BIT == 8 && UCHAR_MAX == 255 503 typedef unsigned char png_byte; 504 #else 505 # error "libpng requires 8 bit bytes" 506 #endif 507 508 #if INT_MIN == -32768 && INT_MAX == 32767 509 typedef int png_int_16; 510 #elif SHRT_MIN == -32768 && SHRT_MAX == 32767 511 typedef short png_int_16; 512 #else 513 # error "libpng requires a signed 16 bit type" 514 #endif 515 516 #if UINT_MAX == 65535 517 typedef unsigned int png_uint_16; 518 #elif USHRT_MAX == 65535 519 typedef unsigned short png_uint_16; 520 #else 521 # error "libpng requires an unsigned 16 bit type" 522 #endif 523 524 #if INT_MIN < -2147483646 && INT_MAX > 2147483646 525 typedef int png_int_32; 526 #elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646 527 typedef long int png_int_32; 528 #else 529 # error "libpng requires a signed 32 bit (or more) type" 530 #endif 531 532 #if UINT_MAX > 4294967294 533 typedef unsigned int png_uint_32; 534 #elif ULONG_MAX > 4294967294 535 typedef unsigned long int png_uint_32; 536 #else 537 # error "libpng requires an unsigned 32 bit (or more) type" 538 #endif 539 540 /* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however, 541 * requires an ISOC90 compiler and relies on consistent behavior of sizeof. 542 */ 543 typedef size_t png_size_t; 544 typedef ptrdiff_t png_ptrdiff_t; 545 546 /* libpng needs to know the maximum value of 'size_t' and this controls the 547 * definition of png_alloc_size_t, below. This maximum value of size_t limits 548 * but does not control the maximum allocations the library makes - there is 549 * direct application control of this through png_set_user_limits(). 550 */ 551 #ifndef PNG_SMALL_SIZE_T 552 /* Compiler specific tests for systems where size_t is known to be less than 553 * 32 bits (some of these systems may no longer work because of the lack of 554 * 'far' support; see above.) 555 */ 556 # if (defined(__TURBOC__) && !defined(__FLAT__)) ||\ 557 (defined(_MSC_VER) && defined(MAXSEG_64K)) 558 # define PNG_SMALL_SIZE_T 559 # endif 560 #endif 561 562 /* png_alloc_size_t is guaranteed to be no smaller than png_size_t, and no 563 * smaller than png_uint_32. Casts from png_size_t or png_uint_32 to 564 * png_alloc_size_t are not necessary; in fact, it is recommended not to use 565 * them at all so that the compiler can complain when something turns out to be 566 * problematic. 567 * 568 * Casts in the other direction (from png_alloc_size_t to png_size_t or 569 * png_uint_32) should be explicitly applied; however, we do not expect to 570 * encounter practical situations that require such conversions. 571 * 572 * PNG_SMALL_SIZE_T must be defined if the maximum value of size_t is less than 573 * 4294967295 - i.e. less than the maximum value of png_uint_32. 574 */ 575 #ifdef PNG_SMALL_SIZE_T 576 typedef png_uint_32 png_alloc_size_t; 577 #else 578 typedef png_size_t png_alloc_size_t; 579 #endif 580 581 /* Prior to 1.6.0 libpng offered limited support for Microsoft C compiler 582 * implementations of Intel CPU specific support of user-mode segmented address 583 * spaces, where 16-bit pointers address more than 65536 bytes of memory using 584 * separate 'segment' registers. The implementation requires two different 585 * types of pointer (only one of which includes the segment value.) 586 * 587 * If required this support is available in version 1.2 of libpng and may be 588 * available in versions through 1.5, although the correctness of the code has 589 * not been verified recently. 590 */ 591 592 /* Typedef for floating-point numbers that are converted to fixed-point with a 593 * multiple of 100,000, e.g., gamma 594 */ 595 typedef png_int_32 png_fixed_point; 596 597 /* Add typedefs for pointers */ 598 typedef void * png_voidp; 599 typedef const void * png_const_voidp; 600 typedef png_byte * png_bytep; 601 typedef const png_byte * png_const_bytep; 602 typedef png_uint_32 * png_uint_32p; 603 typedef const png_uint_32 * png_const_uint_32p; 604 typedef png_int_32 * png_int_32p; 605 typedef const png_int_32 * png_const_int_32p; 606 typedef png_uint_16 * png_uint_16p; 607 typedef const png_uint_16 * png_const_uint_16p; 608 typedef png_int_16 * png_int_16p; 609 typedef const png_int_16 * png_const_int_16p; 610 typedef char * png_charp; 611 typedef const char * png_const_charp; 612 typedef png_fixed_point * png_fixed_point_p; 613 typedef const png_fixed_point * png_const_fixed_point_p; 614 typedef png_size_t * png_size_tp; 615 typedef const png_size_t * png_const_size_tp; 616 617 #ifdef PNG_STDIO_SUPPORTED 618 typedef FILE * png_FILE_p; 619 #endif 620 621 #ifdef PNG_FLOATING_POINT_SUPPORTED 622 typedef double * png_doublep; 623 typedef const double * png_const_doublep; 624 #endif 625 626 /* Pointers to pointers; i.e. arrays */ 627 typedef png_byte * * png_bytepp; 628 typedef png_uint_32 * * png_uint_32pp; 629 typedef png_int_32 * * png_int_32pp; 630 typedef png_uint_16 * * png_uint_16pp; 631 typedef png_int_16 * * png_int_16pp; 632 typedef const char * * png_const_charpp; 633 typedef char * * png_charpp; 634 typedef png_fixed_point * * png_fixed_point_pp; 635 #ifdef PNG_FLOATING_POINT_SUPPORTED 636 typedef double * * png_doublepp; 637 #endif 638 639 /* Pointers to pointers to pointers; i.e., pointer to array */ 640 typedef char * * * png_charppp; 641 642 #endif /* PNG_BUILDING_SYMBOL_TABLE */ 643 644 #endif /* PNGCONF_H */ 645
