1 /***************************************************************************/ 2 /* */ 3 /* ftconfig.h */ 4 /* */ 5 /* ANSI-specific configuration file (specification only). */ 6 /* */ 7 /* Copyright 1996-2004, 2006-2008, 2010-2011 by */ 8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ 9 /* */ 10 /* This file is part of the FreeType project, and may only be used, */ 11 /* modified, and distributed under the terms of the FreeType project */ 12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 13 /* this file you indicate that you have read the license and */ 14 /* understand and accept it fully. */ 15 /* */ 16 /***************************************************************************/ 17 18 19 /*************************************************************************/ 20 /* */ 21 /* This header file contains a number of macro definitions that are used */ 22 /* by the rest of the engine. Most of the macros here are automatically */ 23 /* determined at compile time, and you should not need to change it to */ 24 /* port FreeType, except to compile the library with a non-ANSI */ 25 /* compiler. */ 26 /* */ 27 /* Note however that if some specific modifications are needed, we */ 28 /* advise you to place a modified copy in your build directory. */ 29 /* */ 30 /* The build directory is usually `freetype/builds/<system>', and */ 31 /* contains system-specific files that are always included first when */ 32 /* building the library. */ 33 /* */ 34 /* This ANSI version should stay in `include/freetype/config'. */ 35 /* */ 36 /*************************************************************************/ 37 38 #ifndef __FTCONFIG_H__ 39 #define __FTCONFIG_H__ 40 41 #include <ft2build.h> 42 #include FT_CONFIG_OPTIONS_H 43 #include FT_CONFIG_STANDARD_LIBRARY_H 44 45 46 FT_BEGIN_HEADER 47 48 49 /*************************************************************************/ 50 /* */ 51 /* PLATFORM-SPECIFIC CONFIGURATION MACROS */ 52 /* */ 53 /* These macros can be toggled to suit a specific system. The current */ 54 /* ones are defaults used to compile FreeType in an ANSI C environment */ 55 /* (16bit compilers are also supported). Copy this file to your own */ 56 /* `freetype/builds/<system>' directory, and edit it to port the engine. */ 57 /* */ 58 /*************************************************************************/ 59 60 61 /* There are systems (like the Texas Instruments 'C54x) where a `char' */ 62 /* has 16 bits. ANSI C says that sizeof(char) is always 1. Since an */ 63 /* `int' has 16 bits also for this system, sizeof(int) gives 1 which */ 64 /* is probably unexpected. */ 65 /* */ 66 /* `CHAR_BIT' (defined in limits.h) gives the number of bits in a */ 67 /* `char' type. */ 68 69 #ifndef FT_CHAR_BIT 70 #define FT_CHAR_BIT CHAR_BIT 71 #endif 72 73 74 /* The size of an `int' type. */ 75 #if FT_UINT_MAX == 0xFFFFUL 76 #define FT_SIZEOF_INT (16 / FT_CHAR_BIT) 77 #elif FT_UINT_MAX == 0xFFFFFFFFUL 78 #define FT_SIZEOF_INT (32 / FT_CHAR_BIT) 79 #elif FT_UINT_MAX > 0xFFFFFFFFUL && FT_UINT_MAX == 0xFFFFFFFFFFFFFFFFUL 80 #define FT_SIZEOF_INT (64 / FT_CHAR_BIT) 81 #else 82 #error "Unsupported size of `int' type!" 83 #endif 84 85 /* The size of a `long' type. A five-byte `long' (as used e.g. on the */ 86 /* DM642) is recognized but avoided. */ 87 #if FT_ULONG_MAX == 0xFFFFFFFFUL 88 #define FT_SIZEOF_LONG (32 / FT_CHAR_BIT) 89 #elif FT_ULONG_MAX > 0xFFFFFFFFUL && FT_ULONG_MAX == 0xFFFFFFFFFFUL 90 #define FT_SIZEOF_LONG (32 / FT_CHAR_BIT) 91 #elif FT_ULONG_MAX > 0xFFFFFFFFUL && FT_ULONG_MAX == 0xFFFFFFFFFFFFFFFFUL 92 #define FT_SIZEOF_LONG (64 / FT_CHAR_BIT) 93 #else 94 #error "Unsupported size of `long' type!" 95 #endif 96 97 98 /* Preferred alignment of data */ 99 #define FT_ALIGNMENT 8 100 101 102 /* FT_UNUSED is a macro used to indicate that a given parameter is not */ 103 /* used -- this is only used to get rid of unpleasant compiler warnings */ 104 #ifndef FT_UNUSED 105 #define FT_UNUSED( arg ) ( (arg) = (arg) ) 106 #endif 107 108 109 /*************************************************************************/ 110 /* */ 111 /* AUTOMATIC CONFIGURATION MACROS */ 112 /* */ 113 /* These macros are computed from the ones defined above. Don't touch */ 114 /* their definition, unless you know precisely what you are doing. No */ 115 /* porter should need to mess with them. */ 116 /* */ 117 /*************************************************************************/ 118 119 120 /*************************************************************************/ 121 /* */ 122 /* Mac support */ 123 /* */ 124 /* This is the only necessary change, so it is defined here instead */ 125 /* providing a new configuration file. */ 126 /* */ 127 #if ( defined( __APPLE__ ) && !defined( DARWIN_NO_CARBON ) ) || \ 128 ( defined( __MWERKS__ ) && defined( macintosh ) ) 129 /* no Carbon frameworks for 64bit 10.4.x */ 130 /* AvailabilityMacros.h is available since Mac OS X 10.2, */ 131 /* so guess the system version by maximum errno before inclusion */ 132 #include <errno.h> 133 #ifdef ECANCELED /* defined since 10.2 */ 134 #include "AvailabilityMacros.h" 135 #endif 136 #if defined( __LP64__ ) && \ 137 ( MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_4 ) 138 #define DARWIN_NO_CARBON 1 139 #else 140 #define FT_MACINTOSH 1 141 #endif 142 143 #elif defined( __SC__ ) || defined( __MRC__ ) 144 /* Classic MacOS compilers */ 145 #include "ConditionalMacros.h" 146 #if TARGET_OS_MAC 147 #define FT_MACINTOSH 1 148 #endif 149 150 #endif 151 152 153 /*************************************************************************/ 154 /* */ 155 /* <Section> */ 156 /* basic_types */ 157 /* */ 158 /*************************************************************************/ 159 160 161 /*************************************************************************/ 162 /* */ 163 /* <Type> */ 164 /* FT_Int16 */ 165 /* */ 166 /* <Description> */ 167 /* A typedef for a 16bit signed integer type. */ 168 /* */ 169 typedef signed short FT_Int16; 170 171 172 /*************************************************************************/ 173 /* */ 174 /* <Type> */ 175 /* FT_UInt16 */ 176 /* */ 177 /* <Description> */ 178 /* A typedef for a 16bit unsigned integer type. */ 179 /* */ 180 typedef unsigned short FT_UInt16; 181 182 /* */ 183 184 185 /* this #if 0 ... #endif clause is for documentation purposes */ 186 #if 0 187 188 /*************************************************************************/ 189 /* */ 190 /* <Type> */ 191 /* FT_Int32 */ 192 /* */ 193 /* <Description> */ 194 /* A typedef for a 32bit signed integer type. The size depends on */ 195 /* the configuration. */ 196 /* */ 197 typedef signed XXX FT_Int32; 198 199 200 /*************************************************************************/ 201 /* */ 202 /* <Type> */ 203 /* FT_UInt32 */ 204 /* */ 205 /* A typedef for a 32bit unsigned integer type. The size depends on */ 206 /* the configuration. */ 207 /* */ 208 typedef unsigned XXX FT_UInt32; 209 210 /* */ 211 212 #endif 213 214 #if FT_SIZEOF_INT == (32 / FT_CHAR_BIT) 215 216 typedef signed int FT_Int32; 217 typedef unsigned int FT_UInt32; 218 219 #elif FT_SIZEOF_LONG == (32 / FT_CHAR_BIT) 220 221 typedef signed long FT_Int32; 222 typedef unsigned long FT_UInt32; 223 224 #else 225 #error "no 32bit type found -- please check your configuration files" 226 #endif 227 228 229 /* look up an integer type that is at least 32 bits */ 230 #if FT_SIZEOF_INT >= (32 / FT_CHAR_BIT) 231 232 typedef int FT_Fast; 233 typedef unsigned int FT_UFast; 234 235 #elif FT_SIZEOF_LONG >= (32 / FT_CHAR_BIT) 236 237 typedef long FT_Fast; 238 typedef unsigned long FT_UFast; 239 240 #endif 241 242 243 /* determine whether we have a 64-bit int type for platforms without */ 244 /* Autoconf */ 245 #if FT_SIZEOF_LONG == (64 / FT_CHAR_BIT) 246 247 /* FT_LONG64 must be defined if a 64-bit type is available */ 248 #define FT_LONG64 249 #define FT_INT64 long 250 251 #elif defined( _MSC_VER ) && _MSC_VER >= 900 /* Visual C++ (and Intel C++) */ 252 253 /* this compiler provides the __int64 type */ 254 #define FT_LONG64 255 #define FT_INT64 __int64 256 257 #elif defined( __BORLANDC__ ) /* Borland C++ */ 258 259 /* XXXX: We should probably check the value of __BORLANDC__ in order */ 260 /* to test the compiler version. */ 261 262 /* this compiler provides the __int64 type */ 263 #define FT_LONG64 264 #define FT_INT64 __int64 265 266 #elif defined( __WATCOMC__ ) /* Watcom C++ */ 267 268 /* Watcom doesn't provide 64-bit data types */ 269 270 #elif defined( __MWERKS__ ) /* Metrowerks CodeWarrior */ 271 272 #define FT_LONG64 273 #define FT_INT64 long long int 274 275 #elif defined( __GNUC__ ) 276 277 /* GCC provides the `long long' type */ 278 #define FT_LONG64 279 #define FT_INT64 long long int 280 281 #endif /* FT_SIZEOF_LONG == (64 / FT_CHAR_BIT) */ 282 283 284 /*************************************************************************/ 285 /* */ 286 /* A 64-bit data type will create compilation problems if you compile */ 287 /* in strict ANSI mode. To avoid them, we disable its use if __STDC__ */ 288 /* is defined. You can however ignore this rule by defining the */ 289 /* FT_CONFIG_OPTION_FORCE_INT64 configuration macro. */ 290 /* */ 291 #if defined( FT_LONG64 ) && !defined( FT_CONFIG_OPTION_FORCE_INT64 ) 292 293 #ifdef __STDC__ 294 295 /* undefine the 64-bit macros in strict ANSI compilation mode */ 296 #undef FT_LONG64 297 #undef FT_INT64 298 299 #endif /* __STDC__ */ 300 301 #endif /* FT_LONG64 && !FT_CONFIG_OPTION_FORCE_INT64 */ 302 303 304 #define FT_BEGIN_STMNT do { 305 #define FT_END_STMNT } while ( 0 ) 306 #define FT_DUMMY_STMNT FT_BEGIN_STMNT FT_END_STMNT 307 308 309 #ifndef FT_CONFIG_OPTION_NO_ASSEMBLER 310 /* Provide assembler fragments for performance-critical functions. */ 311 /* These must be defined `static __inline__' with GCC. */ 312 313 #if defined( __CC_ARM ) || defined( __ARMCC__ ) /* RVCT */ 314 #define FT_MULFIX_ASSEMBLER FT_MulFix_arm 315 316 /* documentation is in freetype.h */ 317 318 static __inline FT_Int32 319 FT_MulFix_arm( FT_Int32 a, 320 FT_Int32 b ) 321 { 322 register FT_Int32 t, t2; 323 324 325 __asm 326 { 327 smull t2, t, b, a /* (lo=t2,hi=t) = a*b */ 328 mov a, t, asr #31 /* a = (hi >> 31) */ 329 add a, a, #0x8000 /* a += 0x8000 */ 330 adds t2, t2, a /* t2 += a */ 331 adc t, t, #0 /* t += carry */ 332 mov a, t2, lsr #16 /* a = t2 >> 16 */ 333 orr a, a, t, lsl #16 /* a |= t << 16 */ 334 } 335 return a; 336 } 337 338 #endif /* __CC_ARM || __ARMCC__ */ 339 340 341 #ifdef __GNUC__ 342 343 #if defined( __arm__ ) && !defined( __thumb__ ) && \ 344 !( defined( __CC_ARM ) || defined( __ARMCC__ ) ) 345 #define FT_MULFIX_ASSEMBLER FT_MulFix_arm 346 347 /* documentation is in freetype.h */ 348 349 static __inline__ FT_Int32 350 FT_MulFix_arm( FT_Int32 a, 351 FT_Int32 b ) 352 { 353 register FT_Int32 t, t2; 354 355 356 __asm__ __volatile__ ( 357 "smull %1, %2, %4, %3\n\t" /* (lo=%1,hi=%2) = a*b */ 358 "mov %0, %2, asr #31\n\t" /* %0 = (hi >> 31) */ 359 "add %0, %0, #0x8000\n\t" /* %0 += 0x8000 */ 360 "adds %1, %1, %0\n\t" /* %1 += %0 */ 361 "adc %2, %2, #0\n\t" /* %2 += carry */ 362 "mov %0, %1, lsr #16\n\t" /* %0 = %1 >> 16 */ 363 "orr %0, %0, %2, lsl #16\n\t" /* %0 |= %2 << 16 */ 364 : "=r"(a), "=&r"(t2), "=&r"(t) 365 : "r"(a), "r"(b) ); 366 return a; 367 } 368 369 #endif /* __arm__ && !__thumb__ && !( __CC_ARM || __ARMCC__ ) */ 370 371 #if defined( __i386__ ) 372 #define FT_MULFIX_ASSEMBLER FT_MulFix_i386 373 374 /* documentation is in freetype.h */ 375 376 static __inline__ FT_Int32 377 FT_MulFix_i386( FT_Int32 a, 378 FT_Int32 b ) 379 { 380 register FT_Int32 result; 381 382 383 __asm__ __volatile__ ( 384 "imul %%edx\n" 385 "movl %%edx, %%ecx\n" 386 "sarl $31, %%ecx\n" 387 "addl $0x8000, %%ecx\n" 388 "addl %%ecx, %%eax\n" 389 "adcl $0, %%edx\n" 390 "shrl $16, %%eax\n" 391 "shll $16, %%edx\n" 392 "addl %%edx, %%eax\n" 393 : "=a"(result), "=d"(b) 394 : "a"(a), "d"(b) 395 : "%ecx", "cc" ); 396 return result; 397 } 398 399 #endif /* i386 */ 400 401 #endif /* __GNUC__ */ 402 403 404 #ifdef _MSC_VER /* Visual C++ */ 405 406 #ifdef _M_IX86 407 408 #define FT_MULFIX_ASSEMBLER FT_MulFix_i386 409 410 /* documentation is in freetype.h */ 411 412 static __inline FT_Int32 413 FT_MulFix_i386( FT_Int32 a, 414 FT_Int32 b ) 415 { 416 register FT_Int32 result; 417 418 __asm 419 { 420 mov eax, a 421 mov edx, b 422 imul edx 423 mov ecx, edx 424 sar ecx, 31 425 add ecx, 8000h 426 add eax, ecx 427 adc edx, 0 428 shr eax, 16 429 shl edx, 16 430 add eax, edx 431 mov result, eax 432 } 433 return result; 434 } 435 436 #endif /* _M_IX86 */ 437 438 #endif /* _MSC_VER */ 439 440 #endif /* !FT_CONFIG_OPTION_NO_ASSEMBLER */ 441 442 443 #ifdef FT_CONFIG_OPTION_INLINE_MULFIX 444 #ifdef FT_MULFIX_ASSEMBLER 445 #define FT_MULFIX_INLINED FT_MULFIX_ASSEMBLER 446 #endif 447 #endif 448 449 450 #ifdef FT_MAKE_OPTION_SINGLE_OBJECT 451 452 #define FT_LOCAL( x ) static x 453 #define FT_LOCAL_DEF( x ) static x 454 455 #else 456 457 #ifdef __cplusplus 458 #define FT_LOCAL( x ) extern "C" x 459 #define FT_LOCAL_DEF( x ) extern "C" x 460 #else 461 #define FT_LOCAL( x ) extern x 462 #define FT_LOCAL_DEF( x ) x 463 #endif 464 465 #endif /* FT_MAKE_OPTION_SINGLE_OBJECT */ 466 467 468 #ifndef FT_BASE 469 470 #ifdef __cplusplus 471 #define FT_BASE( x ) extern "C" x 472 #else 473 #define FT_BASE( x ) extern x 474 #endif 475 476 #endif /* !FT_BASE */ 477 478 479 #ifndef FT_BASE_DEF 480 481 #ifdef __cplusplus 482 #define FT_BASE_DEF( x ) x 483 #else 484 #define FT_BASE_DEF( x ) x 485 #endif 486 487 #endif /* !FT_BASE_DEF */ 488 489 490 #ifndef FT_EXPORT 491 492 #ifdef __cplusplus 493 #define FT_EXPORT( x ) extern "C" x 494 #else 495 #define FT_EXPORT( x ) extern x 496 #endif 497 498 #endif /* !FT_EXPORT */ 499 500 501 #ifndef FT_EXPORT_DEF 502 503 #ifdef __cplusplus 504 #define FT_EXPORT_DEF( x ) extern "C" x 505 #else 506 #define FT_EXPORT_DEF( x ) extern x 507 #endif 508 509 #endif /* !FT_EXPORT_DEF */ 510 511 512 #ifndef FT_EXPORT_VAR 513 514 #ifdef __cplusplus 515 #define FT_EXPORT_VAR( x ) extern "C" x 516 #else 517 #define FT_EXPORT_VAR( x ) extern x 518 #endif 519 520 #endif /* !FT_EXPORT_VAR */ 521 522 /* The following macros are needed to compile the library with a */ 523 /* C++ compiler and with 16bit compilers. */ 524 /* */ 525 526 /* This is special. Within C++, you must specify `extern "C"' for */ 527 /* functions which are used via function pointers, and you also */ 528 /* must do that for structures which contain function pointers to */ 529 /* assure C linkage -- it's not possible to have (local) anonymous */ 530 /* functions which are accessed by (global) function pointers. */ 531 /* */ 532 /* */ 533 /* FT_CALLBACK_DEF is used to _define_ a callback function. */ 534 /* */ 535 /* FT_CALLBACK_TABLE is used to _declare_ a constant variable that */ 536 /* contains pointers to callback functions. */ 537 /* */ 538 /* FT_CALLBACK_TABLE_DEF is used to _define_ a constant variable */ 539 /* that contains pointers to callback functions. */ 540 /* */ 541 /* */ 542 /* Some 16bit compilers have to redefine these macros to insert */ 543 /* the infamous `_cdecl' or `__fastcall' declarations. */ 544 /* */ 545 #ifndef FT_CALLBACK_DEF 546 #ifdef __cplusplus 547 #define FT_CALLBACK_DEF( x ) extern "C" x 548 #else 549 #define FT_CALLBACK_DEF( x ) static x 550 #endif 551 #endif /* FT_CALLBACK_DEF */ 552 553 #ifndef FT_CALLBACK_TABLE 554 #ifdef __cplusplus 555 #define FT_CALLBACK_TABLE extern "C" 556 #define FT_CALLBACK_TABLE_DEF extern "C" 557 #else 558 #define FT_CALLBACK_TABLE extern 559 #define FT_CALLBACK_TABLE_DEF /* nothing */ 560 #endif 561 #endif /* FT_CALLBACK_TABLE */ 562 563 564 FT_END_HEADER 565 566 567 #endif /* __FTCONFIG_H__ */ 568 569 570 /* END */ 571
