1 2 /* pngconf.h - machine configurable file for libpng 3 * 4 * libpng version 1.6.25, September 1, 2016 5 * 6 * Copyright (c) 1998-2002,2004,2006-2016 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 * Any machine specific code is near the front of this file, so if you 15 * are configuring libpng for a machine, you may want to read the section 16 * starting here down to where it starts to typedef png_color, png_text, 17 * and png_info. 18 */ 19 20 #ifndef PNGCONF_H 21 #define PNGCONF_H 22 23 #ifndef PNG_BUILDING_SYMBOL_TABLE /* else includes may cause problems */ 24 25 /* From libpng 1.6.0 libpng requires an ANSI X3.159-1989 ("ISOC90") compliant C 26 * compiler for correct compilation. The following header files are required by 27 * the standard. If your compiler doesn't provide these header files, or they 28 * do not match the standard, you will need to provide/improve them. 29 */ 30 #include <limits.h> 31 #include <stddef.h> 32 33 /* Library header files. These header files are all defined by ISOC90; libpng 34 * expects conformant implementations, however, an ISOC90 conformant system need 35 * not provide these header files if the functionality cannot be implemented. 36 * In this case it will be necessary to disable the relevant parts of libpng in 37 * the build of pnglibconf.h. 38 * 39 * Prior to 1.6.0 string.h was included here; the API changes in 1.6.0 to not 40 * include this unnecessary header file. 41 */ 42 43 #ifdef PNG_STDIO_SUPPORTED 44 /* Required for the definition of FILE: */ 45 # include <stdio.h> 46 #endif 47 48 #ifdef PNG_SETJMP_SUPPORTED 49 /* Required for the definition of jmp_buf and the declaration of longjmp: */ 50 # include <setjmp.h> 51 #endif 52 53 #ifdef PNG_CONVERT_tIME_SUPPORTED 54 /* Required for struct tm: */ 55 # include <time.h> 56 #endif 57 58 #endif /* PNG_BUILDING_SYMBOL_TABLE */ 59 60 /* Prior to 1.6.0 it was possible to turn off 'const' in declarations using 61 * PNG_NO_CONST; this is no longer supported except for data declarations which 62 * apparently still cause problems in 2011 on some compilers. 63 */ 64 #define PNG_CONST const /* backward compatibility only */ 65 66 /* This controls optimization of the reading of 16-bit and 32-bit values 67 * from PNG files. It can be set on a per-app-file basis - it 68 * just changes whether a macro is used when the function is called. 69 * The library builder sets the default; if read functions are not 70 * built into the library the macro implementation is forced on. 71 */ 72 #ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED 73 # define PNG_USE_READ_MACROS 74 #endif 75 #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS) 76 # if PNG_DEFAULT_READ_MACROS 77 # define PNG_USE_READ_MACROS 78 # endif 79 #endif 80 81 /* COMPILER SPECIFIC OPTIONS. 82 * 83 * These options are provided so that a variety of difficult compilers 84 * can be used. Some are fixed at build time (e.g. PNG_API_RULE 85 * below) but still have compiler specific implementations, others 86 * may be changed on a per-file basis when compiling against libpng. 87 */ 88 89 /* The PNGARG macro was used in versions of libpng prior to 1.6.0 to protect 90 * against legacy (pre ISOC90) compilers that did not understand function 91 * prototypes. It is not required for modern C compilers. 92 */ 93 #ifndef PNGARG 94 # define PNGARG(arglist) arglist 95 #endif 96 97 /* Function calling conventions. 98 * ============================= 99 * Normally it is not necessary to specify to the compiler how to call 100 * a function - it just does it - however on x86 systems derived from 101 * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems 102 * and some others) there are multiple ways to call a function and the 103 * default can be changed on the compiler command line. For this reason 104 * libpng specifies the calling convention of every exported function and 105 * every function called via a user supplied function pointer. This is 106 * done in this file by defining the following macros: 107 * 108 * PNGAPI Calling convention for exported functions. 109 * PNGCBAPI Calling convention for user provided (callback) functions. 110 * PNGCAPI Calling convention used by the ANSI-C library (required 111 * for longjmp callbacks and sometimes used internally to 112 * specify the calling convention for zlib). 113 * 114 * These macros should never be overridden. If it is necessary to 115 * change calling convention in a private build this can be done 116 * by setting PNG_API_RULE (which defaults to 0) to one of the values 117 * below to select the correct 'API' variants. 118 * 119 * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout. 120 * This is correct in every known environment. 121 * PNG_API_RULE=1 Use the operating system convention for PNGAPI and 122 * the 'C' calling convention (from PNGCAPI) for 123 * callbacks (PNGCBAPI). This is no longer required 124 * in any known environment - if it has to be used 125 * please post an explanation of the problem to the 126 * libpng mailing list. 127 * 128 * These cases only differ if the operating system does not use the C 129 * calling convention, at present this just means the above cases 130 * (x86 DOS/Windows sytems) and, even then, this does not apply to 131 * Cygwin running on those systems. 132 * 133 * Note that the value must be defined in pnglibconf.h so that what 134 * the application uses to call the library matches the conventions 135 * set when building the library. 136 */ 137 138 /* Symbol export 139 * ============= 140 * When building a shared library it is almost always necessary to tell 141 * the compiler which symbols to export. The png.h macro 'PNG_EXPORT' 142 * is used to mark the symbols. On some systems these symbols can be 143 * extracted at link time and need no special processing by the compiler, 144 * on other systems the symbols are flagged by the compiler and just 145 * the declaration requires a special tag applied (unfortunately) in a 146 * compiler dependent way. Some systems can do either. 147 * 148 * A small number of older systems also require a symbol from a DLL to 149 * be flagged to the program that calls it. This is a problem because 150 * we do not know in the header file included by application code that 151 * the symbol will come from a shared library, as opposed to a statically 152 * linked one. For this reason the application must tell us by setting 153 * the magic flag PNG_USE_DLL to turn on the special processing before 154 * it includes png.h. 155 * 156 * Four additional macros are used to make this happen: 157 * 158 * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from 159 * the build or imported if PNG_USE_DLL is set - compiler 160 * and system specific. 161 * 162 * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to 163 * 'type', compiler specific. 164 * 165 * PNG_DLL_EXPORT Set to the magic to use during a libpng build to 166 * make a symbol exported from the DLL. Not used in the 167 * public header files; see pngpriv.h for how it is used 168 * in the libpng build. 169 * 170 * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come 171 * from a DLL - used to define PNG_IMPEXP when 172 * PNG_USE_DLL is set. 173 */ 174 175 /* System specific discovery. 176 * ========================== 177 * This code is used at build time to find PNG_IMPEXP, the API settings 178 * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL 179 * import processing is possible. On Windows systems it also sets 180 * compiler-specific macros to the values required to change the calling 181 * conventions of the various functions. 182 */ 183 #if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\ 184 defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) 185 /* Windows system (DOS doesn't support DLLs). Includes builds under Cygwin or 186 * MinGW on any architecture currently supported by Windows. Also includes 187 * Watcom builds but these need special treatment because they are not 188 * compatible with GCC or Visual C because of different calling conventions. 189 */ 190 # if PNG_API_RULE == 2 191 /* If this line results in an error, either because __watcall is not 192 * understood or because of a redefine just below you cannot use *this* 193 * build of the library with the compiler you are using. *This* build was 194 * build using Watcom and applications must also be built using Watcom! 195 */ 196 # define PNGCAPI __watcall 197 # endif 198 199 # if defined(__GNUC__) || (defined(_MSC_VER) && (_MSC_VER >= 800)) 200 # define PNGCAPI __cdecl 201 # if PNG_API_RULE == 1 202 /* If this line results in an error __stdcall is not understood and 203 * PNG_API_RULE should not have been set to '1'. 204 */ 205 # define PNGAPI __stdcall 206 # endif 207 # else 208 /* An older compiler, or one not detected (erroneously) above, 209 * if necessary override on the command line to get the correct 210 * variants for the compiler. 211 */ 212 # ifndef PNGCAPI 213 # define PNGCAPI _cdecl 214 # endif 215 # if PNG_API_RULE == 1 && !defined(PNGAPI) 216 # define PNGAPI _stdcall 217 # endif 218 # endif /* compiler/api */ 219 220 /* NOTE: PNGCBAPI always defaults to PNGCAPI. */ 221 222 # if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD) 223 # error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed" 224 # endif 225 226 # if (defined(_MSC_VER) && _MSC_VER < 800) ||\ 227 (defined(__BORLANDC__) && __BORLANDC__ < 0x500) 228 /* older Borland and MSC 229 * compilers used '__export' and required this to be after 230 * the type. 231 */ 232 # ifndef PNG_EXPORT_TYPE 233 # define PNG_EXPORT_TYPE(type) type PNG_IMPEXP 234 # endif 235 # define PNG_DLL_EXPORT __export 236 # else /* newer compiler */ 237 # define PNG_DLL_EXPORT __declspec(dllexport) 238 # ifndef PNG_DLL_IMPORT 239 # define PNG_DLL_IMPORT __declspec(dllimport) 240 # endif 241 # endif /* compiler */ 242 243 #else /* !Windows */ 244 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) 245 # define PNGAPI _System 246 # else /* !Windows/x86 && !OS/2 */ 247 /* Use the defaults, or define PNG*API on the command line (but 248 * this will have to be done for every compile!) 249 */ 250 # endif /* other system, !OS/2 */ 251 #endif /* !Windows/x86 */ 252 253 /* Now do all the defaulting . */ 254 #ifndef PNGCAPI 255 # define PNGCAPI 256 #endif 257 #ifndef PNGCBAPI 258 # define PNGCBAPI PNGCAPI 259 #endif 260 #ifndef PNGAPI 261 # define PNGAPI PNGCAPI 262 #endif 263 264 /* PNG_IMPEXP may be set on the compilation system command line or (if not set) 265 * then in an internal header file when building the library, otherwise (when 266 * using the library) it is set here. 267 */ 268 #ifndef PNG_IMPEXP 269 # if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT) 270 /* This forces use of a DLL, disallowing static linking */ 271 # define PNG_IMPEXP PNG_DLL_IMPORT 272 # endif 273 274 # ifndef PNG_IMPEXP 275 # define PNG_IMPEXP 276 # endif 277 #endif 278 279 /* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat 280 * 'attributes' as a storage class - the attributes go at the start of the 281 * function definition, and attributes are always appended regardless of the 282 * compiler. This considerably simplifies these macros but may cause problems 283 * if any compilers both need function attributes and fail to handle them as 284 * a storage class (this is unlikely.) 285 */ 286 #ifndef PNG_FUNCTION 287 # define PNG_FUNCTION(type, name, args, attributes) attributes type name args 288 #endif 289 290 #ifndef PNG_EXPORT_TYPE 291 # define PNG_EXPORT_TYPE(type) PNG_IMPEXP type 292 #endif 293 294 /* The ordinal value is only relevant when preprocessing png.h for symbol 295 * table entries, so we discard it here. See the .dfn files in the 296 * scripts directory. 297 */ 298 299 #ifndef PNG_EXPORTA 300 # define PNG_EXPORTA(ordinal, type, name, args, attributes) \ 301 PNG_FUNCTION(PNG_EXPORT_TYPE(type), (PNGAPI name), PNGARG(args), \ 302 PNG_LINKAGE_API attributes) 303 #endif 304 305 /* ANSI-C (C90) does not permit a macro to be invoked with an empty argument, 306 * so make something non-empty to satisfy the requirement: 307 */ 308 #define PNG_EMPTY /*empty list*/ 309 310 #define PNG_EXPORT(ordinal, type, name, args) \ 311 PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY) 312 313 /* Use PNG_REMOVED to comment out a removed interface. */ 314 #ifndef PNG_REMOVED 315 # define PNG_REMOVED(ordinal, type, name, args, attributes) 316 #endif 317 318 #ifndef PNG_CALLBACK 319 # define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args) 320 #endif 321 322 /* Support for compiler specific function attributes. These are used 323 * so that where compiler support is available incorrect use of API 324 * functions in png.h will generate compiler warnings. 325 * 326 * Added at libpng-1.2.41. 327 */ 328 329 #ifndef PNG_NO_PEDANTIC_WARNINGS 330 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED 331 # define PNG_PEDANTIC_WARNINGS_SUPPORTED 332 # endif 333 #endif 334 335 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED 336 /* Support for compiler specific function attributes. These are used 337 * so that where compiler support is available, incorrect use of API 338 * functions in png.h will generate compiler warnings. Added at libpng 339 * version 1.2.41. Disabling these removes the warnings but may also produce 340 * less efficient code. 341 */ 342 # if defined(__clang__) && defined(__has_attribute) 343 /* Clang defines both __clang__ and __GNUC__. Check __clang__ first. */ 344 # if !defined(PNG_USE_RESULT) && __has_attribute(__warn_unused_result__) 345 # define PNG_USE_RESULT __attribute__((__warn_unused_result__)) 346 # endif 347 # if !defined(PNG_NORETURN) && __has_attribute(__noreturn__) 348 # define PNG_NORETURN __attribute__((__noreturn__)) 349 # endif 350 # if !defined(PNG_ALLOCATED) && __has_attribute(__malloc__) 351 # define PNG_ALLOCATED __attribute__((__malloc__)) 352 # endif 353 # if !defined(PNG_DEPRECATED) && __has_attribute(__deprecated__) 354 # define PNG_DEPRECATED __attribute__((__deprecated__)) 355 # endif 356 # if !defined(PNG_PRIVATE) 357 # ifdef __has_extension 358 # if __has_extension(attribute_unavailable_with_message) 359 # define PNG_PRIVATE __attribute__((__unavailable__(\ 360 "This function is not exported by libpng."))) 361 # endif 362 # endif 363 # endif 364 # ifndef PNG_RESTRICT 365 # define PNG_RESTRICT __restrict 366 # endif 367 368 # elif defined(__GNUC__) 369 # ifndef PNG_USE_RESULT 370 # define PNG_USE_RESULT __attribute__((__warn_unused_result__)) 371 # endif 372 # ifndef PNG_NORETURN 373 # define PNG_NORETURN __attribute__((__noreturn__)) 374 # endif 375 # if __GNUC__ >= 3 376 # ifndef PNG_ALLOCATED 377 # define PNG_ALLOCATED __attribute__((__malloc__)) 378 # endif 379 # ifndef PNG_DEPRECATED 380 # define PNG_DEPRECATED __attribute__((__deprecated__)) 381 # endif 382 # ifndef PNG_PRIVATE 383 # if 0 /* Doesn't work so we use deprecated instead*/ 384 # define PNG_PRIVATE \ 385 __attribute__((warning("This function is not exported by libpng."))) 386 # else 387 # define PNG_PRIVATE \ 388 __attribute__((__deprecated__)) 389 # endif 390 # endif 391 # if ((__GNUC__ > 3) || !defined(__GNUC_MINOR__) || (__GNUC_MINOR__ >= 1)) 392 # ifndef PNG_RESTRICT 393 # define PNG_RESTRICT __restrict 394 # endif 395 # endif /* __GNUC__.__GNUC_MINOR__ > 3.0 */ 396 # endif /* __GNUC__ >= 3 */ 397 398 # elif defined(_MSC_VER) && (_MSC_VER >= 1300) 399 # ifndef PNG_USE_RESULT 400 # define PNG_USE_RESULT /* not supported */ 401 # endif 402 # ifndef PNG_NORETURN 403 # define PNG_NORETURN __declspec(noreturn) 404 # endif 405 # ifndef PNG_ALLOCATED 406 # if (_MSC_VER >= 1400) 407 # define PNG_ALLOCATED __declspec(restrict) 408 # endif 409 # endif 410 # ifndef PNG_DEPRECATED 411 # define PNG_DEPRECATED __declspec(deprecated) 412 # endif 413 # ifndef PNG_PRIVATE 414 # define PNG_PRIVATE __declspec(deprecated) 415 # endif 416 # ifndef PNG_RESTRICT 417 # if (_MSC_VER >= 1400) 418 # define PNG_RESTRICT __restrict 419 # endif 420 # endif 421 422 # elif defined(__WATCOMC__) 423 # ifndef PNG_RESTRICT 424 # define PNG_RESTRICT __restrict 425 # endif 426 # endif 427 #endif /* PNG_PEDANTIC_WARNINGS */ 428 429 #ifndef PNG_DEPRECATED 430 # define PNG_DEPRECATED /* Use of this function is deprecated */ 431 #endif 432 #ifndef PNG_USE_RESULT 433 # define PNG_USE_RESULT /* The result of this function must be checked */ 434 #endif 435 #ifndef PNG_NORETURN 436 # define PNG_NORETURN /* This function does not return */ 437 #endif 438 #ifndef PNG_ALLOCATED 439 # define PNG_ALLOCATED /* The result of the function is new memory */ 440 #endif 441 #ifndef PNG_PRIVATE 442 # define PNG_PRIVATE /* This is a private libpng function */ 443 #endif 444 #ifndef PNG_RESTRICT 445 # define PNG_RESTRICT /* The C99 "restrict" feature */ 446 #endif 447 448 #ifndef PNG_FP_EXPORT /* A floating point API. */ 449 # ifdef PNG_FLOATING_POINT_SUPPORTED 450 # define PNG_FP_EXPORT(ordinal, type, name, args)\ 451 PNG_EXPORT(ordinal, type, name, args); 452 # else /* No floating point APIs */ 453 # define PNG_FP_EXPORT(ordinal, type, name, args) 454 # endif 455 #endif 456 #ifndef PNG_FIXED_EXPORT /* A fixed point API. */ 457 # ifdef PNG_FIXED_POINT_SUPPORTED 458 # define PNG_FIXED_EXPORT(ordinal, type, name, args)\ 459 PNG_EXPORT(ordinal, type, name, args); 460 # else /* No fixed point APIs */ 461 # define PNG_FIXED_EXPORT(ordinal, type, name, args) 462 # endif 463 #endif 464 465 #ifndef PNG_BUILDING_SYMBOL_TABLE 466 /* Some typedefs to get us started. These should be safe on most of the common 467 * platforms. 468 * 469 * png_uint_32 and png_int_32 may, currently, be larger than required to hold a 470 * 32-bit value however this is not normally advisable. 471 * 472 * png_uint_16 and png_int_16 should always be two bytes in size - this is 473 * verified at library build time. 474 * 475 * png_byte must always be one byte in size. 476 * 477 * The checks below use constants from limits.h, as defined by the ISOC90 478 * standard. 479 */ 480 #if CHAR_BIT == 8 && UCHAR_MAX == 255 481 typedef unsigned char png_byte; 482 #else 483 # error "libpng requires 8-bit bytes" 484 #endif 485 486 #if INT_MIN == -32768 && INT_MAX == 32767 487 typedef int png_int_16; 488 #elif SHRT_MIN == -32768 && SHRT_MAX == 32767 489 typedef short png_int_16; 490 #else 491 # error "libpng requires a signed 16-bit type" 492 #endif 493 494 #if UINT_MAX == 65535 495 typedef unsigned int png_uint_16; 496 #elif USHRT_MAX == 65535 497 typedef unsigned short png_uint_16; 498 #else 499 # error "libpng requires an unsigned 16-bit type" 500 #endif 501 502 #if INT_MIN < -2147483646 && INT_MAX > 2147483646 503 typedef int png_int_32; 504 #elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646 505 typedef long int png_int_32; 506 #else 507 # error "libpng requires a signed 32-bit (or more) type" 508 #endif 509 510 #if UINT_MAX > 4294967294 511 typedef unsigned int png_uint_32; 512 #elif ULONG_MAX > 4294967294 513 typedef unsigned long int png_uint_32; 514 #else 515 # error "libpng requires an unsigned 32-bit (or more) type" 516 #endif 517 518 /* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however, 519 * requires an ISOC90 compiler and relies on consistent behavior of sizeof. 520 */ 521 typedef size_t png_size_t; 522 typedef ptrdiff_t png_ptrdiff_t; 523 524 /* libpng needs to know the maximum value of 'size_t' and this controls the 525 * definition of png_alloc_size_t, below. This maximum value of size_t limits 526 * but does not control the maximum allocations the library makes - there is 527 * direct application control of this through png_set_user_limits(). 528 */ 529 #ifndef PNG_SMALL_SIZE_T 530 /* Compiler specific tests for systems where size_t is known to be less than 531 * 32 bits (some of these systems may no longer work because of the lack of 532 * 'far' support; see above.) 533 */ 534 # if (defined(__TURBOC__) && !defined(__FLAT__)) ||\ 535 (defined(_MSC_VER) && defined(MAXSEG_64K)) 536 # define PNG_SMALL_SIZE_T 537 # endif 538 #endif 539 540 /* png_alloc_size_t is guaranteed to be no smaller than png_size_t, and no 541 * smaller than png_uint_32. Casts from png_size_t or png_uint_32 to 542 * png_alloc_size_t are not necessary; in fact, it is recommended not to use 543 * them at all so that the compiler can complain when something turns out to be 544 * problematic. 545 * 546 * Casts in the other direction (from png_alloc_size_t to png_size_t or 547 * png_uint_32) should be explicitly applied; however, we do not expect to 548 * encounter practical situations that require such conversions. 549 * 550 * PNG_SMALL_SIZE_T must be defined if the maximum value of size_t is less than 551 * 4294967295 - i.e. less than the maximum value of png_uint_32. 552 */ 553 #ifdef PNG_SMALL_SIZE_T 554 typedef png_uint_32 png_alloc_size_t; 555 #else 556 typedef png_size_t png_alloc_size_t; 557 #endif 558 559 /* Prior to 1.6.0 libpng offered limited support for Microsoft C compiler 560 * implementations of Intel CPU specific support of user-mode segmented address 561 * spaces, where 16-bit pointers address more than 65536 bytes of memory using 562 * separate 'segment' registers. The implementation requires two different 563 * types of pointer (only one of which includes the segment value.) 564 * 565 * If required this support is available in version 1.2 of libpng and may be 566 * available in versions through 1.5, although the correctness of the code has 567 * not been verified recently. 568 */ 569 570 /* Typedef for floating-point numbers that are converted to fixed-point with a 571 * multiple of 100,000, e.g., gamma 572 */ 573 typedef png_int_32 png_fixed_point; 574 575 /* Add typedefs for pointers */ 576 typedef void * png_voidp; 577 typedef const void * png_const_voidp; 578 typedef png_byte * png_bytep; 579 typedef const png_byte * png_const_bytep; 580 typedef png_uint_32 * png_uint_32p; 581 typedef const png_uint_32 * png_const_uint_32p; 582 typedef png_int_32 * png_int_32p; 583 typedef const png_int_32 * png_const_int_32p; 584 typedef png_uint_16 * png_uint_16p; 585 typedef const png_uint_16 * png_const_uint_16p; 586 typedef png_int_16 * png_int_16p; 587 typedef const png_int_16 * png_const_int_16p; 588 typedef char * png_charp; 589 typedef const char * png_const_charp; 590 typedef png_fixed_point * png_fixed_point_p; 591 typedef const png_fixed_point * png_const_fixed_point_p; 592 typedef png_size_t * png_size_tp; 593 typedef const png_size_t * png_const_size_tp; 594 595 #ifdef PNG_STDIO_SUPPORTED 596 typedef FILE * png_FILE_p; 597 #endif 598 599 #ifdef PNG_FLOATING_POINT_SUPPORTED 600 typedef double * png_doublep; 601 typedef const double * png_const_doublep; 602 #endif 603 604 /* Pointers to pointers; i.e. arrays */ 605 typedef png_byte * * png_bytepp; 606 typedef png_uint_32 * * png_uint_32pp; 607 typedef png_int_32 * * png_int_32pp; 608 typedef png_uint_16 * * png_uint_16pp; 609 typedef png_int_16 * * png_int_16pp; 610 typedef const char * * png_const_charpp; 611 typedef char * * png_charpp; 612 typedef png_fixed_point * * png_fixed_point_pp; 613 #ifdef PNG_FLOATING_POINT_SUPPORTED 614 typedef double * * png_doublepp; 615 #endif 616 617 /* Pointers to pointers to pointers; i.e., pointer to array */ 618 typedef char * * * png_charppp; 619 620 #endif /* PNG_BUILDING_SYMBOL_TABLE */ 621 622 #endif /* PNGCONF_H */ 623
