| | 1 | |
| | 2 | /* pngconf.h - machine configurable file for libpng |
| | 3 | * |
| | 4 | * libpng version 1.5.7 - December 15, 2011 |
| | 5 | * |
| | 6 | * Copyright (c) 1998-2011 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 | #ifdef __DMC__ |
| | 26 | #define PNG_NO_SNPRINTF |
| | 27 | #endif |
| | 28 | |
| | 29 | #ifndef PNG_BUILDING_SYMBOL_TABLE |
| | 30 | /* PNG_NO_LIMITS_H may be used to turn off the use of the standard C |
| | 31 | * definition file for machine specific limits, this may impact the |
| | 32 | * correctness of the definitons below (see uses of INT_MAX). |
| | 33 | */ |
| | 34 | # ifndef PNG_NO_LIMITS_H |
| | 35 | # include <limits.h> |
| | 36 | # endif |
| | 37 | |
| | 38 | /* For the memory copy APIs (i.e. the standard definitions of these), |
| | 39 | * because this file defines png_memcpy and so on the base APIs must |
| | 40 | * be defined here. |
| | 41 | */ |
| | 42 | # ifdef BSD |
| | 43 | # include <strings.h> |
| | 44 | # else |
| | 45 | # include <string.h> |
| | 46 | # endif |
| | 47 | |
| | 48 | /* For png_FILE_p - this provides the standard definition of a |
| | 49 | * FILE |
| | 50 | */ |
| | 51 | # ifdef PNG_STDIO_SUPPORTED |
| | 52 | # include <stdio.h> |
| | 53 | # endif |
| | 54 | #endif |
| | 55 | |
| | 56 | /* This controls optimization of the reading of 16 and 32 bit values |
| | 57 | * from PNG files. It can be set on a per-app-file basis - it |
| | 58 | * just changes whether a macro is used to the function is called. |
| | 59 | * The library builder sets the default, if read functions are not |
| | 60 | * built into the library the macro implementation is forced on. |
| | 61 | */ |
| | 62 | #ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED |
| | 63 | # define PNG_USE_READ_MACROS |
| | 64 | #endif |
| | 65 | #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS) |
| | 66 | # if PNG_DEFAULT_READ_MACROS |
| | 67 | # define PNG_USE_READ_MACROS |
| | 68 | # endif |
| | 69 | #endif |
| | 70 | |
| | 71 | /* COMPILER SPECIFIC OPTIONS. |
| | 72 | * |
| | 73 | * These options are provided so that a variety of difficult compilers |
| | 74 | * can be used. Some are fixed at build time (e.g. PNG_API_RULE |
| | 75 | * below) but still have compiler specific implementations, others |
| | 76 | * may be changed on a per-file basis when compiling against libpng. |
| | 77 | */ |
| | 78 | |
| | 79 | /* The PNGARG macro protects us against machines that don't have function |
| | 80 | * prototypes (ie K&R style headers). If your compiler does not handle |
| | 81 | * function prototypes, define this macro and use the included ansi2knr. |
| | 82 | * I've always been able to use _NO_PROTO as the indicator, but you may |
| | 83 | * need to drag the empty declaration out in front of here, or change the |
| | 84 | * ifdef to suit your own needs. |
| | 85 | */ |
| | 86 | #ifndef PNGARG |
| | 87 | |
| | 88 | # ifdef OF /* zlib prototype munger */ |
| | 89 | # define PNGARG(arglist) OF(arglist) |
| | 90 | # else |
| | 91 | |
| | 92 | # ifdef _NO_PROTO |
| | 93 | # define PNGARG(arglist) () |
| | 94 | # else |
| | 95 | # define PNGARG(arglist) arglist |
| | 96 | # endif /* _NO_PROTO */ |
| | 97 | |
| | 98 | # endif /* OF */ |
| | 99 | |
| | 100 | #endif /* PNGARG */ |
| | 101 | |
| | 102 | /* Function calling conventions. |
| | 103 | * ============================= |
| | 104 | * Normally it is not necessary to specify to the compiler how to call |
| | 105 | * a function - it just does it - however on x86 systems derived from |
| | 106 | * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems |
| | 107 | * and some others) there are multiple ways to call a function and the |
| | 108 | * default can be changed on the compiler command line. For this reason |
| | 109 | * libpng specifies the calling convention of every exported function and |
| | 110 | * every function called via a user supplied function pointer. This is |
| | 111 | * done in this file by defining the following macros: |
| | 112 | * |
| | 113 | * PNGAPI Calling convention for exported functions. |
| | 114 | * PNGCBAPI Calling convention for user provided (callback) functions. |
| | 115 | * PNGCAPI Calling convention used by the ANSI-C library (required |
| | 116 | * for longjmp callbacks and sometimes used internally to |
| | 117 | * specify the calling convention for zlib). |
| | 118 | * |
| | 119 | * These macros should never be overridden. If it is necessary to |
| | 120 | * change calling convention in a private build this can be done |
| | 121 | * by setting PNG_API_RULE (which defaults to 0) to one of the values |
| | 122 | * below to select the correct 'API' variants. |
| | 123 | * |
| | 124 | * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout. |
| | 125 | * This is correct in every known environment. |
| | 126 | * PNG_API_RULE=1 Use the operating system convention for PNGAPI and |
| | 127 | * the 'C' calling convention (from PNGCAPI) for |
| | 128 | * callbacks (PNGCBAPI). This is no longer required |
| | 129 | * in any known environment - if it has to be used |
| | 130 | * please post an explanation of the problem to the |
| | 131 | * libpng mailing list. |
| | 132 | * |
| | 133 | * These cases only differ if the operating system does not use the C |
| | 134 | * calling convention, at present this just means the above cases |
| | 135 | * (x86 DOS/Windows sytems) and, even then, this does not apply to |
| | 136 | * Cygwin running on those systems. |
| | 137 | * |
| | 138 | * Note that the value must be defined in pnglibconf.h so that what |
| | 139 | * the application uses to call the library matches the conventions |
| | 140 | * set when building the library. |
| | 141 | */ |
| | 142 | |
| | 143 | /* Symbol export |
| | 144 | * ============= |
| | 145 | * When building a shared library it is almost always necessary to tell |
| | 146 | * the compiler which symbols to export. The png.h macro 'PNG_EXPORT' |
| | 147 | * is used to mark the symbols. On some systems these symbols can be |
| | 148 | * extracted at link time and need no special processing by the compiler, |
| | 149 | * on other systems the symbols are flagged by the compiler and just |
| | 150 | * the declaration requires a special tag applied (unfortunately) in a |
| | 151 | * compiler dependent way. Some systems can do either. |
| | 152 | * |
| | 153 | * A small number of older systems also require a symbol from a DLL to |
| | 154 | * be flagged to the program that calls it. This is a problem because |
| | 155 | * we do not know in the header file included by application code that |
| | 156 | * the symbol will come from a shared library, as opposed to a statically |
| | 157 | * linked one. For this reason the application must tell us by setting |
| | 158 | * the magic flag PNG_USE_DLL to turn on the special processing before |
| | 159 | * it includes png.h. |
| | 160 | * |
| | 161 | * Four additional macros are used to make this happen: |
| | 162 | * |
| | 163 | * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from |
| | 164 | * the build or imported if PNG_USE_DLL is set - compiler |
| | 165 | * and system specific. |
| | 166 | * |
| | 167 | * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to |
| | 168 | * 'type', compiler specific. |
| | 169 | * |
| | 170 | * PNG_DLL_EXPORT Set to the magic to use during a libpng build to |
| | 171 | * make a symbol exported from the DLL. Not used in the |
| | 172 | * public header files; see pngpriv.h for how it is used |
| | 173 | * in the libpng build. |
| | 174 | * |
| | 175 | * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come |
| | 176 | * from a DLL - used to define PNG_IMPEXP when |
| | 177 | * PNG_USE_DLL is set. |
| | 178 | */ |
| | 179 | |
| | 180 | /* System specific discovery. |
| | 181 | * ========================== |
| | 182 | * This code is used at build time to find PNG_IMPEXP, the API settings |
| | 183 | * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL |
| | 184 | * import processing is possible. On Windows/x86 systems it also sets |
| | 185 | * compiler-specific macros to the values required to change the calling |
| | 186 | * conventions of the various functions. |
| | 187 | */ |
| | 188 | #if ( defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\ |
| | 189 | defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) ) &&\ |
| | 190 | ( defined(_X86_) || defined(_X64_) || defined(_M_IX86) ||\ |
| | 191 | defined(_M_X64) || defined(_M_IA64) ) |
| | 192 | /* Windows system (DOS doesn't support DLLs) running on x86/x64. Includes |
| | 193 | * builds under Cygwin or MinGW. Also includes Watcom builds but these need |
| | 194 | * special treatment because they are not compatible with GCC or Visual C |
| | 195 | * because of different calling conventions. |
| | 196 | */ |
| | 197 | # if PNG_API_RULE == 2 |
| | 198 | /* If this line results in an error, either because __watcall is not |
| | 199 | * understood or because of a redefine just below you cannot use *this* |
| | 200 | * build of the library with the compiler you are using. *This* build was |
| | 201 | * build using Watcom and applications must also be built using Watcom! |
| | 202 | */ |
| | 203 | # define PNGCAPI __watcall |
| | 204 | # endif |
| | 205 | |
| | 206 | # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) |
| | 207 | # define PNGCAPI __cdecl |
| | 208 | # if PNG_API_RULE == 1 |
| | 209 | # define PNGAPI __stdcall |
| | 210 | # endif |
| | 211 | # else |
| | 212 | /* An older compiler, or one not detected (erroneously) above, |
| | 213 | * if necessary override on the command line to get the correct |
| | 214 | * variants for the compiler. |
| | 215 | */ |
| | 216 | # ifndef PNGCAPI |
| | 217 | # define PNGCAPI _cdecl |
| | 218 | # endif |
| | 219 | # if PNG_API_RULE == 1 && !defined(PNGAPI) |
| | 220 | # define PNGAPI _stdcall |
| | 221 | # endif |
| | 222 | # endif /* compiler/api */ |
| | 223 | /* NOTE: PNGCBAPI always defaults to PNGCAPI. */ |
| | 224 | |
| | 225 | # if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD) |
| | 226 | ERROR: PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed |
| | 227 | # endif |
| | 228 | |
| | 229 | # if (defined(_MSC_VER) && _MSC_VER < 800) ||\ |
| | 230 | (defined(__BORLANDC__) && __BORLANDC__ < 0x500) |
| | 231 | /* older Borland and MSC |
| | 232 | * compilers used '__export' and required this to be after |
| | 233 | * the type. |
| | 234 | */ |
| | 235 | # ifndef PNG_EXPORT_TYPE |
| | 236 | # define PNG_EXPORT_TYPE(type) type PNG_IMPEXP |
| | 237 | # endif |
| | 238 | # define PNG_DLL_EXPORT __export |
| | 239 | # else /* newer compiler */ |
| | 240 | # define PNG_DLL_EXPORT __declspec(dllexport) |
| | 241 | # ifndef PNG_DLL_IMPORT |
| | 242 | # define PNG_DLL_IMPORT __declspec(dllimport) |
| | 243 | # endif |
| | 244 | # endif /* compiler */ |
| | 245 | |
| | 246 | #else /* !Windows/x86 */ |
| | 247 | # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) |
| | 248 | # define PNGAPI _System |
| | 249 | # else /* !Windows/x86 && !OS/2 */ |
| | 250 | /* Use the defaults, or define PNG*API on the command line (but |
| | 251 | * this will have to be done for every compile!) |
| | 252 | */ |
| | 253 | # endif /* other system, !OS/2 */ |
| | 254 | #endif /* !Windows/x86 */ |
| | 255 | |
| | 256 | /* Now do all the defaulting . */ |
| | 257 | #ifndef PNGCAPI |
| | 258 | # define PNGCAPI |
| | 259 | #endif |
| | 260 | #ifndef PNGCBAPI |
| | 261 | # define PNGCBAPI PNGCAPI |
| | 262 | #endif |
| | 263 | #ifndef PNGAPI |
| | 264 | # define PNGAPI PNGCAPI |
| | 265 | #endif |
| | 266 | |
| | 267 | /* PNG_IMPEXP may be set on the compilation system command line or (if not set) |
| | 268 | * then in an internal header file when building the library, otherwise (when |
| | 269 | * using the library) it is set here. |
| | 270 | */ |
| | 271 | #ifndef PNG_IMPEXP |
| | 272 | # if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT) |
| | 273 | /* This forces use of a DLL, disallowing static linking */ |
| | 274 | # define PNG_IMPEXP PNG_DLL_IMPORT |
| | 275 | # endif |
| | 276 | |
| | 277 | # ifndef PNG_IMPEXP |
| | 278 | # define PNG_IMPEXP |
| | 279 | # endif |
| | 280 | #endif |
| | 281 | |
| | 282 | /* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat |
| | 283 | * 'attributes' as a storage class - the attributes go at the start of the |
| | 284 | * function definition, and attributes are always appended regardless of the |
| | 285 | * compiler. This considerably simplifies these macros but may cause problems |
| | 286 | * if any compilers both need function attributes and fail to handle them as |
| | 287 | * a storage class (this is unlikely.) |
| | 288 | */ |
| | 289 | #ifndef PNG_FUNCTION |
| | 290 | # define PNG_FUNCTION(type, name, args, attributes) attributes type name args |
| | 291 | #endif |
| | 292 | |
| | 293 | #ifndef PNG_EXPORT_TYPE |
| | 294 | # define PNG_EXPORT_TYPE(type) PNG_IMPEXP type |
| | 295 | #endif |
| | 296 | |
| | 297 | /* The ordinal value is only relevant when preprocessing png.h for symbol |
| | 298 | * table entries, so we discard it here. See the .dfn files in the |
| | 299 | * scripts directory. |
| | 300 | */ |
| | 301 | #ifndef PNG_EXPORTA |
| | 302 | |
| | 303 | # define PNG_EXPORTA(ordinal, type, name, args, attributes)\ |
| | 304 | PNG_FUNCTION(PNG_EXPORT_TYPE(type),(PNGAPI name),PNGARG(args), \ |
| | 305 | extern attributes) |
| | 306 | #endif |
| | 307 | |
| | 308 | /* ANSI-C (C90) does not permit a macro to be invoked with an empty argument, |
| | 309 | * so make something non-empty to satisfy the requirement: |
| | 310 | */ |
| | 311 | #define PNG_EMPTY /*empty list*/ |
| | 312 | |
| | 313 | #define PNG_EXPORT(ordinal, type, name, args)\ |
| | 314 | PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY) |
| | 315 | |
| | 316 | /* Use PNG_REMOVED to comment out a removed interface. */ |
| | 317 | #ifndef PNG_REMOVED |
| | 318 | # define PNG_REMOVED(ordinal, type, name, args, attributes) |
| | 319 | #endif |
| | 320 | |
| | 321 | #ifndef PNG_CALLBACK |
| | 322 | # define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args) |
| | 323 | #endif |
| | 324 | |
| | 325 | /* Support for compiler specific function attributes. These are used |
| | 326 | * so that where compiler support is available incorrect use of API |
| | 327 | * functions in png.h will generate compiler warnings. |
| | 328 | * |
| | 329 | * Added at libpng-1.2.41. |
| | 330 | */ |
| | 331 | |
| | 332 | #ifndef PNG_NO_PEDANTIC_WARNINGS |
| | 333 | # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED |
| | 334 | # define PNG_PEDANTIC_WARNINGS_SUPPORTED |
| | 335 | # endif |
| | 336 | #endif |
| | 337 | |
| | 338 | #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED |
| | 339 | /* Support for compiler specific function attributes. These are used |
| | 340 | * so that where compiler support is available incorrect use of API |
| | 341 | * functions in png.h will generate compiler warnings. Added at libpng |
| | 342 | * version 1.2.41. |
| | 343 | */ |
| | 344 | # if defined(__GNUC__) |
| | 345 | # ifndef PNG_USE_RESULT |
| | 346 | # define PNG_USE_RESULT __attribute__((__warn_unused_result__)) |
| | 347 | # endif |
| | 348 | # ifndef PNG_NORETURN |
| | 349 | # define PNG_NORETURN __attribute__((__noreturn__)) |
| | 350 | # endif |
| | 351 | # ifndef PNG_ALLOCATED |
| | 352 | # define PNG_ALLOCATED __attribute__((__malloc__)) |
| | 353 | # endif |
| | 354 | # ifndef PNG_DEPRECATED |
| | 355 | # define PNG_DEPRECATED __attribute__((__deprecated__)) |
| | 356 | # endif |
| | 357 | # ifndef PNG_PRIVATE |
| | 358 | # if 0 /* Doesn't work so we use deprecated instead*/ |
| | 359 | # define PNG_PRIVATE \ |
| | 360 | __attribute__((warning("This function is not exported by libpng."))) |
| | 361 | # else |
| | 362 | # define PNG_PRIVATE \ |
| | 363 | __attribute__((__deprecated__)) |
| | 364 | # endif |
| | 365 | # endif |
| | 366 | # endif /* __GNUC__ */ |
| | 367 | |
| | 368 | # if defined(_MSC_VER) && (_MSC_VER >= 1300) |
| | 369 | # ifndef PNG_USE_RESULT |
| | 370 | # define PNG_USE_RESULT /* not supported */ |
| | 371 | # endif |
| | 372 | # ifndef PNG_NORETURN |
| | 373 | # define PNG_NORETURN __declspec(noreturn) |
| | 374 | # endif |
| | 375 | # ifndef PNG_ALLOCATED |
| | 376 | # if (_MSC_VER >= 1400) |
| | 377 | # define PNG_ALLOCATED __declspec(restrict) |
| | 378 | # endif |
| | 379 | # endif |
| | 380 | # ifndef PNG_DEPRECATED |
| | 381 | # define PNG_DEPRECATED __declspec(deprecated) |
| | 382 | # endif |
| | 383 | # ifndef PNG_PRIVATE |
| | 384 | # define PNG_PRIVATE __declspec(deprecated) |
| | 385 | # endif |
| | 386 | # endif /* _MSC_VER */ |
| | 387 | #endif /* PNG_PEDANTIC_WARNINGS */ |
| | 388 | |
| | 389 | #ifndef PNG_DEPRECATED |
| | 390 | # define PNG_DEPRECATED /* Use of this function is deprecated */ |
| | 391 | #endif |
| | 392 | #ifndef PNG_USE_RESULT |
| | 393 | # define PNG_USE_RESULT /* The result of this function must be checked */ |
| | 394 | #endif |
| | 395 | #ifndef PNG_NORETURN |
| | 396 | # define PNG_NORETURN /* This function does not return */ |
| | 397 | #endif |
| | 398 | #ifndef PNG_ALLOCATED |
| | 399 | # define PNG_ALLOCATED /* The result of the function is new memory */ |
| | 400 | #endif |
| | 401 | #ifndef PNG_PRIVATE |
| | 402 | # define PNG_PRIVATE /* This is a private libpng function */ |
| | 403 | #endif |
| | 404 | #ifndef PNG_FP_EXPORT /* A floating point API. */ |
| | 405 | # ifdef PNG_FLOATING_POINT_SUPPORTED |
| | 406 | # define PNG_FP_EXPORT(ordinal, type, name, args)\ |
| | 407 | PNG_EXPORT(ordinal, type, name, args) |
| | 408 | # else /* No floating point APIs */ |
| | 409 | # define PNG_FP_EXPORT(ordinal, type, name, args) |
| | 410 | # endif |
| | 411 | #endif |
| | 412 | #ifndef PNG_FIXED_EXPORT /* A fixed point API. */ |
| | 413 | # ifdef PNG_FIXED_POINT_SUPPORTED |
| | 414 | # define PNG_FIXED_EXPORT(ordinal, type, name, args)\ |
| | 415 | PNG_EXPORT(ordinal, type, name, args) |
| | 416 | # else /* No fixed point APIs */ |
| | 417 | # define PNG_FIXED_EXPORT(ordinal, type, name, args) |
| | 418 | # endif |
| | 419 | #endif |
| | 420 | |
| | 421 | /* The following uses const char * instead of char * for error |
| | 422 | * and warning message functions, so some compilers won't complain. |
| | 423 | * If you do not want to use const, define PNG_NO_CONST here. |
| | 424 | * |
| | 425 | * This should not change how the APIs are called, so it can be done |
| | 426 | * on a per-file basis in the application. |
| | 427 | */ |
| | 428 | #ifndef PNG_CONST |
| | 429 | # ifndef PNG_NO_CONST |
| | 430 | # define PNG_CONST const |
| | 431 | # else |
| | 432 | # define PNG_CONST |
| | 433 | # endif |
| | 434 | #endif |
| | 435 | |
| | 436 | /* Some typedefs to get us started. These should be safe on most of the |
| | 437 | * common platforms. The typedefs should be at least as large as the |
| | 438 | * numbers suggest (a png_uint_32 must be at least 32 bits long), but they |
| | 439 | * don't have to be exactly that size. Some compilers dislike passing |
| | 440 | * unsigned shorts as function parameters, so you may be better off using |
| | 441 | * unsigned int for png_uint_16. |
| | 442 | */ |
| | 443 | |
| | 444 | #if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL) |
| | 445 | typedef unsigned int png_uint_32; |
| | 446 | typedef int png_int_32; |
| | 447 | #else |
| | 448 | typedef unsigned long png_uint_32; |
| | 449 | typedef long png_int_32; |
| | 450 | #endif |
| | 451 | typedef unsigned short png_uint_16; |
| | 452 | typedef short png_int_16; |
| | 453 | typedef unsigned char png_byte; |
| | 454 | |
| | 455 | #ifdef PNG_NO_SIZE_T |
| | 456 | typedef unsigned int png_size_t; |
| | 457 | #else |
| | 458 | typedef size_t png_size_t; |
| | 459 | #endif |
| | 460 | #define png_sizeof(x) (sizeof (x)) |
| | 461 | |
| | 462 | /* The following is needed for medium model support. It cannot be in the |
| | 463 | * pngpriv.h header. Needs modification for other compilers besides |
| | 464 | * MSC. Model independent support declares all arrays and pointers to be |
| | 465 | * large using the far keyword. The zlib version used must also support |
| | 466 | * model independent data. As of version zlib 1.0.4, the necessary changes |
| | 467 | * have been made in zlib. The USE_FAR_KEYWORD define triggers other |
| | 468 | * changes that are needed. (Tim Wegner) |
| | 469 | */ |
| | 470 | |
| | 471 | /* Separate compiler dependencies (problem here is that zlib.h always |
| | 472 | * defines FAR. (SJT) |
| | 473 | */ |
| | 474 | #ifdef __BORLANDC__ |
| | 475 | # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) |
| | 476 | # define LDATA 1 |
| | 477 | # else |
| | 478 | # define LDATA 0 |
| | 479 | # endif |
| | 480 | /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ |
| | 481 | # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) |
| | 482 | # define PNG_MAX_MALLOC_64K /* only used in build */ |
| | 483 | # if (LDATA != 1) |
| | 484 | # ifndef FAR |
| | 485 | # define FAR __far |
| | 486 | # endif |
| | 487 | # define USE_FAR_KEYWORD |
| | 488 | # endif /* LDATA != 1 */ |
| | 489 | /* Possibly useful for moving data out of default segment. |
| | 490 | * Uncomment it if you want. Could also define FARDATA as |
| | 491 | * const if your compiler supports it. (SJT) |
| | 492 | # define FARDATA FAR |
| | 493 | */ |
| | 494 | # endif /* __WIN32__, __FLAT__, __CYGWIN__ */ |
| | 495 | #endif /* __BORLANDC__ */ |
| | 496 | |
| | 497 | |
| | 498 | /* Suggest testing for specific compiler first before testing for |
| | 499 | * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, |
| | 500 | * making reliance oncertain keywords suspect. (SJT) |
| | 501 | */ |
| | 502 | |
| | 503 | /* MSC Medium model */ |
| | 504 | #ifdef FAR |
| | 505 | # ifdef M_I86MM |
| | 506 | # define USE_FAR_KEYWORD |
| | 507 | # define FARDATA FAR |
| | 508 | # include <dos.h> |
| | 509 | # endif |
| | 510 | #endif |
| | 511 | |
| | 512 | /* SJT: default case */ |
| | 513 | #ifndef FAR |
| | 514 | # define FAR |
| | 515 | #endif |
| | 516 | |
| | 517 | /* At this point FAR is always defined */ |
| | 518 | #ifndef FARDATA |
| | 519 | # define FARDATA |
| | 520 | #endif |
| | 521 | |
| | 522 | /* Typedef for floating-point numbers that are converted |
| | 523 | * to fixed-point with a multiple of 100,000, e.g., gamma |
| | 524 | */ |
| | 525 | typedef png_int_32 png_fixed_point; |
| | 526 | |
| | 527 | /* Add typedefs for pointers */ |
| | 528 | typedef void FAR * png_voidp; |
| | 529 | typedef PNG_CONST void FAR * png_const_voidp; |
| | 530 | typedef png_byte FAR * png_bytep; |
| | 531 | typedef PNG_CONST png_byte FAR * png_const_bytep; |
| | 532 | typedef png_uint_32 FAR * png_uint_32p; |
| | 533 | typedef PNG_CONST png_uint_32 FAR * png_const_uint_32p; |
| | 534 | typedef png_int_32 FAR * png_int_32p; |
| | 535 | typedef PNG_CONST png_int_32 FAR * png_const_int_32p; |
| | 536 | typedef png_uint_16 FAR * png_uint_16p; |
| | 537 | typedef PNG_CONST png_uint_16 FAR * png_const_uint_16p; |
| | 538 | typedef png_int_16 FAR * png_int_16p; |
| | 539 | typedef PNG_CONST png_int_16 FAR * png_const_int_16p; |
| | 540 | typedef char FAR * png_charp; |
| | 541 | typedef PNG_CONST char FAR * png_const_charp; |
| | 542 | typedef png_fixed_point FAR * png_fixed_point_p; |
| | 543 | typedef PNG_CONST png_fixed_point FAR * png_const_fixed_point_p; |
| | 544 | typedef png_size_t FAR * png_size_tp; |
| | 545 | typedef PNG_CONST png_size_t FAR * png_const_size_tp; |
| | 546 | |
| | 547 | #ifdef PNG_STDIO_SUPPORTED |
| | 548 | typedef FILE * png_FILE_p; |
| | 549 | #endif |
| | 550 | |
| | 551 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
| | 552 | typedef double FAR * png_doublep; |
| | 553 | typedef PNG_CONST double FAR * png_const_doublep; |
| | 554 | #endif |
| | 555 | |
| | 556 | /* Pointers to pointers; i.e. arrays */ |
| | 557 | typedef png_byte FAR * FAR * png_bytepp; |
| | 558 | typedef png_uint_32 FAR * FAR * png_uint_32pp; |
| | 559 | typedef png_int_32 FAR * FAR * png_int_32pp; |
| | 560 | typedef png_uint_16 FAR * FAR * png_uint_16pp; |
| | 561 | typedef png_int_16 FAR * FAR * png_int_16pp; |
| | 562 | typedef PNG_CONST char FAR * FAR * png_const_charpp; |
| | 563 | typedef char FAR * FAR * png_charpp; |
| | 564 | typedef png_fixed_point FAR * FAR * png_fixed_point_pp; |
| | 565 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
| | 566 | typedef double FAR * FAR * png_doublepp; |
| | 567 | #endif |
| | 568 | |
| | 569 | /* Pointers to pointers to pointers; i.e., pointer to array */ |
| | 570 | typedef char FAR * FAR * FAR * png_charppp; |
| | 571 | |
| | 572 | /* png_alloc_size_t is guaranteed to be no smaller than png_size_t, |
| | 573 | * and no smaller than png_uint_32. Casts from png_size_t or png_uint_32 |
| | 574 | * to png_alloc_size_t are not necessary; in fact, it is recommended |
| | 575 | * not to use them at all so that the compiler can complain when something |
| | 576 | * turns out to be problematic. |
| | 577 | * Casts in the other direction (from png_alloc_size_t to png_size_t or |
| | 578 | * png_uint_32) should be explicitly applied; however, we do not expect |
| | 579 | * to encounter practical situations that require such conversions. |
| | 580 | */ |
| | 581 | #if defined(__TURBOC__) && !defined(__FLAT__) |
| | 582 | typedef unsigned long png_alloc_size_t; |
| | 583 | #else |
| | 584 | # if defined(_MSC_VER) && defined(MAXSEG_64K) |
| | 585 | typedef unsigned long png_alloc_size_t; |
| | 586 | # else |
| | 587 | /* This is an attempt to detect an old Windows system where (int) is |
| | 588 | * actually 16 bits, in that case png_malloc must have an argument with a |
| | 589 | * bigger size to accomodate the requirements of the library. |
| | 590 | */ |
| | 591 | # if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_)) && \ |
| | 592 | (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL) |
| | 593 | typedef DWORD png_alloc_size_t; |
| | 594 | # else |
| | 595 | typedef png_size_t png_alloc_size_t; |
| | 596 | # endif |
| | 597 | # endif |
| | 598 | #endif |
| | 599 | |
| | 600 | #endif /* PNGCONF_H */ |
projects / wxWidgets.git / blame_incremental