| 1 | /* |
| 2 | * This file is part of FFmpeg. |
| 3 | * |
| 4 | * FFmpeg is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU Lesser General Public |
| 6 | * License as published by the Free Software Foundation; either |
| 7 | * version 2.1 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * FFmpeg is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * Lesser General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU Lesser General Public |
| 15 | * License along with FFmpeg; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | */ |
| 18 | |
| 19 | #ifndef AVUTIL_INTREADWRITE_H |
| 20 | #define AVUTIL_INTREADWRITE_H |
| 21 | |
| 22 | #include <stdint.h> |
| 23 | #include "libavutil/avconfig.h" |
| 24 | #include "attributes.h" |
| 25 | #include "bswap.h" |
| 26 | |
| 27 | typedef union { |
| 28 | uint64_t u64; |
| 29 | uint32_t u32[2]; |
| 30 | uint16_t u16[4]; |
| 31 | uint8_t u8 [8]; |
| 32 | double f64; |
| 33 | float f32[2]; |
| 34 | } av_alias av_alias64; |
| 35 | |
| 36 | typedef union { |
| 37 | uint32_t u32; |
| 38 | uint16_t u16[2]; |
| 39 | uint8_t u8 [4]; |
| 40 | float f32; |
| 41 | } av_alias av_alias32; |
| 42 | |
| 43 | typedef union { |
| 44 | uint16_t u16; |
| 45 | uint8_t u8 [2]; |
| 46 | } av_alias av_alias16; |
| 47 | |
| 48 | /* |
| 49 | * Arch-specific headers can provide any combination of |
| 50 | * AV_[RW][BLN](16|24|32|48|64) and AV_(COPY|SWAP|ZERO)(64|128) macros. |
| 51 | * Preprocessor symbols must be defined, even if these are implemented |
| 52 | * as inline functions. |
| 53 | * |
| 54 | * R/W means read/write, B/L/N means big/little/native endianness. |
| 55 | * The following macros require aligned access, compared to their |
| 56 | * unaligned variants: AV_(COPY|SWAP|ZERO)(64|128), AV_[RW]N[8-64]A. |
| 57 | * Incorrect usage may range from abysmal performance to crash |
| 58 | * depending on the platform. |
| 59 | * |
| 60 | * The unaligned variants are AV_[RW][BLN][8-64] and AV_COPY*U. |
| 61 | */ |
| 62 | |
| 63 | #ifdef HAVE_AV_CONFIG_H |
| 64 | |
| 65 | #include "config.h" |
| 66 | |
| 67 | #if ARCH_ARM |
| 68 | # include "arm/intreadwrite.h" |
| 69 | #elif ARCH_AVR32 |
| 70 | # include "avr32/intreadwrite.h" |
| 71 | #elif ARCH_MIPS |
| 72 | # include "mips/intreadwrite.h" |
| 73 | #elif ARCH_PPC |
| 74 | # include "ppc/intreadwrite.h" |
| 75 | #elif ARCH_TOMI |
| 76 | # include "tomi/intreadwrite.h" |
| 77 | #elif ARCH_X86 |
| 78 | # include "x86/intreadwrite.h" |
| 79 | #endif |
| 80 | |
| 81 | #endif /* HAVE_AV_CONFIG_H */ |
| 82 | |
| 83 | /* |
| 84 | * Map AV_RNXX <-> AV_R[BL]XX for all variants provided by per-arch headers. |
| 85 | */ |
| 86 | |
| 87 | #if AV_HAVE_BIGENDIAN |
| 88 | |
| 89 | # if defined(AV_RN16) && !defined(AV_RB16) |
| 90 | # define AV_RB16(p) AV_RN16(p) |
| 91 | # elif !defined(AV_RN16) && defined(AV_RB16) |
| 92 | # define AV_RN16(p) AV_RB16(p) |
| 93 | # endif |
| 94 | |
| 95 | # if defined(AV_WN16) && !defined(AV_WB16) |
| 96 | # define AV_WB16(p, v) AV_WN16(p, v) |
| 97 | # elif !defined(AV_WN16) && defined(AV_WB16) |
| 98 | # define AV_WN16(p, v) AV_WB16(p, v) |
| 99 | # endif |
| 100 | |
| 101 | # if defined(AV_RN24) && !defined(AV_RB24) |
| 102 | # define AV_RB24(p) AV_RN24(p) |
| 103 | # elif !defined(AV_RN24) && defined(AV_RB24) |
| 104 | # define AV_RN24(p) AV_RB24(p) |
| 105 | # endif |
| 106 | |
| 107 | # if defined(AV_WN24) && !defined(AV_WB24) |
| 108 | # define AV_WB24(p, v) AV_WN24(p, v) |
| 109 | # elif !defined(AV_WN24) && defined(AV_WB24) |
| 110 | # define AV_WN24(p, v) AV_WB24(p, v) |
| 111 | # endif |
| 112 | |
| 113 | # if defined(AV_RN32) && !defined(AV_RB32) |
| 114 | # define AV_RB32(p) AV_RN32(p) |
| 115 | # elif !defined(AV_RN32) && defined(AV_RB32) |
| 116 | # define AV_RN32(p) AV_RB32(p) |
| 117 | # endif |
| 118 | |
| 119 | # if defined(AV_WN32) && !defined(AV_WB32) |
| 120 | # define AV_WB32(p, v) AV_WN32(p, v) |
| 121 | # elif !defined(AV_WN32) && defined(AV_WB32) |
| 122 | # define AV_WN32(p, v) AV_WB32(p, v) |
| 123 | # endif |
| 124 | |
| 125 | # if defined(AV_RN48) && !defined(AV_RB48) |
| 126 | # define AV_RB48(p) AV_RN48(p) |
| 127 | # elif !defined(AV_RN48) && defined(AV_RB48) |
| 128 | # define AV_RN48(p) AV_RB48(p) |
| 129 | # endif |
| 130 | |
| 131 | # if defined(AV_WN48) && !defined(AV_WB48) |
| 132 | # define AV_WB48(p, v) AV_WN48(p, v) |
| 133 | # elif !defined(AV_WN48) && defined(AV_WB48) |
| 134 | # define AV_WN48(p, v) AV_WB48(p, v) |
| 135 | # endif |
| 136 | |
| 137 | # if defined(AV_RN64) && !defined(AV_RB64) |
| 138 | # define AV_RB64(p) AV_RN64(p) |
| 139 | # elif !defined(AV_RN64) && defined(AV_RB64) |
| 140 | # define AV_RN64(p) AV_RB64(p) |
| 141 | # endif |
| 142 | |
| 143 | # if defined(AV_WN64) && !defined(AV_WB64) |
| 144 | # define AV_WB64(p, v) AV_WN64(p, v) |
| 145 | # elif !defined(AV_WN64) && defined(AV_WB64) |
| 146 | # define AV_WN64(p, v) AV_WB64(p, v) |
| 147 | # endif |
| 148 | |
| 149 | #else /* AV_HAVE_BIGENDIAN */ |
| 150 | |
| 151 | # if defined(AV_RN16) && !defined(AV_RL16) |
| 152 | # define AV_RL16(p) AV_RN16(p) |
| 153 | # elif !defined(AV_RN16) && defined(AV_RL16) |
| 154 | # define AV_RN16(p) AV_RL16(p) |
| 155 | # endif |
| 156 | |
| 157 | # if defined(AV_WN16) && !defined(AV_WL16) |
| 158 | # define AV_WL16(p, v) AV_WN16(p, v) |
| 159 | # elif !defined(AV_WN16) && defined(AV_WL16) |
| 160 | # define AV_WN16(p, v) AV_WL16(p, v) |
| 161 | # endif |
| 162 | |
| 163 | # if defined(AV_RN24) && !defined(AV_RL24) |
| 164 | # define AV_RL24(p) AV_RN24(p) |
| 165 | # elif !defined(AV_RN24) && defined(AV_RL24) |
| 166 | # define AV_RN24(p) AV_RL24(p) |
| 167 | # endif |
| 168 | |
| 169 | # if defined(AV_WN24) && !defined(AV_WL24) |
| 170 | # define AV_WL24(p, v) AV_WN24(p, v) |
| 171 | # elif !defined(AV_WN24) && defined(AV_WL24) |
| 172 | # define AV_WN24(p, v) AV_WL24(p, v) |
| 173 | # endif |
| 174 | |
| 175 | # if defined(AV_RN32) && !defined(AV_RL32) |
| 176 | # define AV_RL32(p) AV_RN32(p) |
| 177 | # elif !defined(AV_RN32) && defined(AV_RL32) |
| 178 | # define AV_RN32(p) AV_RL32(p) |
| 179 | # endif |
| 180 | |
| 181 | # if defined(AV_WN32) && !defined(AV_WL32) |
| 182 | # define AV_WL32(p, v) AV_WN32(p, v) |
| 183 | # elif !defined(AV_WN32) && defined(AV_WL32) |
| 184 | # define AV_WN32(p, v) AV_WL32(p, v) |
| 185 | # endif |
| 186 | |
| 187 | # if defined(AV_RN48) && !defined(AV_RL48) |
| 188 | # define AV_RL48(p) AV_RN48(p) |
| 189 | # elif !defined(AV_RN48) && defined(AV_RL48) |
| 190 | # define AV_RN48(p) AV_RL48(p) |
| 191 | # endif |
| 192 | |
| 193 | # if defined(AV_WN48) && !defined(AV_WL48) |
| 194 | # define AV_WL48(p, v) AV_WN48(p, v) |
| 195 | # elif !defined(AV_WN48) && defined(AV_WL48) |
| 196 | # define AV_WN48(p, v) AV_WL48(p, v) |
| 197 | # endif |
| 198 | |
| 199 | # if defined(AV_RN64) && !defined(AV_RL64) |
| 200 | # define AV_RL64(p) AV_RN64(p) |
| 201 | # elif !defined(AV_RN64) && defined(AV_RL64) |
| 202 | # define AV_RN64(p) AV_RL64(p) |
| 203 | # endif |
| 204 | |
| 205 | # if defined(AV_WN64) && !defined(AV_WL64) |
| 206 | # define AV_WL64(p, v) AV_WN64(p, v) |
| 207 | # elif !defined(AV_WN64) && defined(AV_WL64) |
| 208 | # define AV_WN64(p, v) AV_WL64(p, v) |
| 209 | # endif |
| 210 | |
| 211 | #endif /* !AV_HAVE_BIGENDIAN */ |
| 212 | |
| 213 | /* |
| 214 | * Define AV_[RW]N helper macros to simplify definitions not provided |
| 215 | * by per-arch headers. |
| 216 | */ |
| 217 | |
| 218 | #if defined(__GNUC__) && !defined(__TI_COMPILER_VERSION__) |
| 219 | |
| 220 | union unaligned_64 { uint64_t l; } __attribute__((packed)) av_alias; |
| 221 | union unaligned_32 { uint32_t l; } __attribute__((packed)) av_alias; |
| 222 | union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias; |
| 223 | |
| 224 | # define AV_RN(s, p) (((const union unaligned_##s *) (p))->l) |
| 225 | # define AV_WN(s, p, v) ((((union unaligned_##s *) (p))->l) = (v)) |
| 226 | |
| 227 | #elif defined(__DECC) |
| 228 | |
| 229 | # define AV_RN(s, p) (*((const __unaligned uint##s##_t*)(p))) |
| 230 | # define AV_WN(s, p, v) (*((__unaligned uint##s##_t*)(p)) = (v)) |
| 231 | |
| 232 | #elif AV_HAVE_FAST_UNALIGNED |
| 233 | |
| 234 | # define AV_RN(s, p) (((const av_alias##s*)(p))->u##s) |
| 235 | # define AV_WN(s, p, v) (((av_alias##s*)(p))->u##s = (v)) |
| 236 | |
| 237 | #else |
| 238 | |
| 239 | #ifndef AV_RB16 |
| 240 | # define AV_RB16(x) \ |
| 241 | ((((const uint8_t*)(x))[0] << 8) | \ |
| 242 | ((const uint8_t*)(x))[1]) |
| 243 | #endif |
| 244 | #ifndef AV_WB16 |
| 245 | # define AV_WB16(p, darg) do { \ |
| 246 | unsigned d = (darg); \ |
| 247 | ((uint8_t*)(p))[1] = (d); \ |
| 248 | ((uint8_t*)(p))[0] = (d)>>8; \ |
| 249 | } while(0) |
| 250 | #endif |
| 251 | |
| 252 | #ifndef AV_RL16 |
| 253 | # define AV_RL16(x) \ |
| 254 | ((((const uint8_t*)(x))[1] << 8) | \ |
| 255 | ((const uint8_t*)(x))[0]) |
| 256 | #endif |
| 257 | #ifndef AV_WL16 |
| 258 | # define AV_WL16(p, darg) do { \ |
| 259 | unsigned d = (darg); \ |
| 260 | ((uint8_t*)(p))[0] = (d); \ |
| 261 | ((uint8_t*)(p))[1] = (d)>>8; \ |
| 262 | } while(0) |
| 263 | #endif |
| 264 | |
| 265 | #ifndef AV_RB32 |
| 266 | # define AV_RB32(x) \ |
| 267 | (((uint32_t)((const uint8_t*)(x))[0] << 24) | \ |
| 268 | (((const uint8_t*)(x))[1] << 16) | \ |
| 269 | (((const uint8_t*)(x))[2] << 8) | \ |
| 270 | ((const uint8_t*)(x))[3]) |
| 271 | #endif |
| 272 | #ifndef AV_WB32 |
| 273 | # define AV_WB32(p, darg) do { \ |
| 274 | unsigned d = (darg); \ |
| 275 | ((uint8_t*)(p))[3] = (d); \ |
| 276 | ((uint8_t*)(p))[2] = (d)>>8; \ |
| 277 | ((uint8_t*)(p))[1] = (d)>>16; \ |
| 278 | ((uint8_t*)(p))[0] = (d)>>24; \ |
| 279 | } while(0) |
| 280 | #endif |
| 281 | |
| 282 | #ifndef AV_RL32 |
| 283 | # define AV_RL32(x) \ |
| 284 | (((uint32_t)((const uint8_t*)(x))[3] << 24) | \ |
| 285 | (((const uint8_t*)(x))[2] << 16) | \ |
| 286 | (((const uint8_t*)(x))[1] << 8) | \ |
| 287 | ((const uint8_t*)(x))[0]) |
| 288 | #endif |
| 289 | #ifndef AV_WL32 |
| 290 | # define AV_WL32(p, darg) do { \ |
| 291 | unsigned d = (darg); \ |
| 292 | ((uint8_t*)(p))[0] = (d); \ |
| 293 | ((uint8_t*)(p))[1] = (d)>>8; \ |
| 294 | ((uint8_t*)(p))[2] = (d)>>16; \ |
| 295 | ((uint8_t*)(p))[3] = (d)>>24; \ |
| 296 | } while(0) |
| 297 | #endif |
| 298 | |
| 299 | #ifndef AV_RB64 |
| 300 | # define AV_RB64(x) \ |
| 301 | (((uint64_t)((const uint8_t*)(x))[0] << 56) | \ |
| 302 | ((uint64_t)((const uint8_t*)(x))[1] << 48) | \ |
| 303 | ((uint64_t)((const uint8_t*)(x))[2] << 40) | \ |
| 304 | ((uint64_t)((const uint8_t*)(x))[3] << 32) | \ |
| 305 | ((uint64_t)((const uint8_t*)(x))[4] << 24) | \ |
| 306 | ((uint64_t)((const uint8_t*)(x))[5] << 16) | \ |
| 307 | ((uint64_t)((const uint8_t*)(x))[6] << 8) | \ |
| 308 | (uint64_t)((const uint8_t*)(x))[7]) |
| 309 | #endif |
| 310 | #ifndef AV_WB64 |
| 311 | # define AV_WB64(p, darg) do { \ |
| 312 | uint64_t d = (darg); \ |
| 313 | ((uint8_t*)(p))[7] = (d); \ |
| 314 | ((uint8_t*)(p))[6] = (d)>>8; \ |
| 315 | ((uint8_t*)(p))[5] = (d)>>16; \ |
| 316 | ((uint8_t*)(p))[4] = (d)>>24; \ |
| 317 | ((uint8_t*)(p))[3] = (d)>>32; \ |
| 318 | ((uint8_t*)(p))[2] = (d)>>40; \ |
| 319 | ((uint8_t*)(p))[1] = (d)>>48; \ |
| 320 | ((uint8_t*)(p))[0] = (d)>>56; \ |
| 321 | } while(0) |
| 322 | #endif |
| 323 | |
| 324 | #ifndef AV_RL64 |
| 325 | # define AV_RL64(x) \ |
| 326 | (((uint64_t)((const uint8_t*)(x))[7] << 56) | \ |
| 327 | ((uint64_t)((const uint8_t*)(x))[6] << 48) | \ |
| 328 | ((uint64_t)((const uint8_t*)(x))[5] << 40) | \ |
| 329 | ((uint64_t)((const uint8_t*)(x))[4] << 32) | \ |
| 330 | ((uint64_t)((const uint8_t*)(x))[3] << 24) | \ |
| 331 | ((uint64_t)((const uint8_t*)(x))[2] << 16) | \ |
| 332 | ((uint64_t)((const uint8_t*)(x))[1] << 8) | \ |
| 333 | (uint64_t)((const uint8_t*)(x))[0]) |
| 334 | #endif |
| 335 | #ifndef AV_WL64 |
| 336 | # define AV_WL64(p, darg) do { \ |
| 337 | uint64_t d = (darg); \ |
| 338 | ((uint8_t*)(p))[0] = (d); \ |
| 339 | ((uint8_t*)(p))[1] = (d)>>8; \ |
| 340 | ((uint8_t*)(p))[2] = (d)>>16; \ |
| 341 | ((uint8_t*)(p))[3] = (d)>>24; \ |
| 342 | ((uint8_t*)(p))[4] = (d)>>32; \ |
| 343 | ((uint8_t*)(p))[5] = (d)>>40; \ |
| 344 | ((uint8_t*)(p))[6] = (d)>>48; \ |
| 345 | ((uint8_t*)(p))[7] = (d)>>56; \ |
| 346 | } while(0) |
| 347 | #endif |
| 348 | |
| 349 | #if AV_HAVE_BIGENDIAN |
| 350 | # define AV_RN(s, p) AV_RB##s(p) |
| 351 | # define AV_WN(s, p, v) AV_WB##s(p, v) |
| 352 | #else |
| 353 | # define AV_RN(s, p) AV_RL##s(p) |
| 354 | # define AV_WN(s, p, v) AV_WL##s(p, v) |
| 355 | #endif |
| 356 | |
| 357 | #endif /* HAVE_FAST_UNALIGNED */ |
| 358 | |
| 359 | #ifndef AV_RN16 |
| 360 | # define AV_RN16(p) AV_RN(16, p) |
| 361 | #endif |
| 362 | |
| 363 | #ifndef AV_RN32 |
| 364 | # define AV_RN32(p) AV_RN(32, p) |
| 365 | #endif |
| 366 | |
| 367 | #ifndef AV_RN64 |
| 368 | # define AV_RN64(p) AV_RN(64, p) |
| 369 | #endif |
| 370 | |
| 371 | #ifndef AV_WN16 |
| 372 | # define AV_WN16(p, v) AV_WN(16, p, v) |
| 373 | #endif |
| 374 | |
| 375 | #ifndef AV_WN32 |
| 376 | # define AV_WN32(p, v) AV_WN(32, p, v) |
| 377 | #endif |
| 378 | |
| 379 | #ifndef AV_WN64 |
| 380 | # define AV_WN64(p, v) AV_WN(64, p, v) |
| 381 | #endif |
| 382 | |
| 383 | #if AV_HAVE_BIGENDIAN |
| 384 | # define AV_RB(s, p) AV_RN##s(p) |
| 385 | # define AV_WB(s, p, v) AV_WN##s(p, v) |
| 386 | # define AV_RL(s, p) av_bswap##s(AV_RN##s(p)) |
| 387 | # define AV_WL(s, p, v) AV_WN##s(p, av_bswap##s(v)) |
| 388 | #else |
| 389 | # define AV_RB(s, p) av_bswap##s(AV_RN##s(p)) |
| 390 | # define AV_WB(s, p, v) AV_WN##s(p, av_bswap##s(v)) |
| 391 | # define AV_RL(s, p) AV_RN##s(p) |
| 392 | # define AV_WL(s, p, v) AV_WN##s(p, v) |
| 393 | #endif |
| 394 | |
| 395 | #define AV_RB8(x) (((const uint8_t*)(x))[0]) |
| 396 | #define AV_WB8(p, d) do { ((uint8_t*)(p))[0] = (d); } while(0) |
| 397 | |
| 398 | #define AV_RL8(x) AV_RB8(x) |
| 399 | #define AV_WL8(p, d) AV_WB8(p, d) |
| 400 | |
| 401 | #ifndef AV_RB16 |
| 402 | # define AV_RB16(p) AV_RB(16, p) |
| 403 | #endif |
| 404 | #ifndef AV_WB16 |
| 405 | # define AV_WB16(p, v) AV_WB(16, p, v) |
| 406 | #endif |
| 407 | |
| 408 | #ifndef AV_RL16 |
| 409 | # define AV_RL16(p) AV_RL(16, p) |
| 410 | #endif |
| 411 | #ifndef AV_WL16 |
| 412 | # define AV_WL16(p, v) AV_WL(16, p, v) |
| 413 | #endif |
| 414 | |
| 415 | #ifndef AV_RB32 |
| 416 | # define AV_RB32(p) AV_RB(32, p) |
| 417 | #endif |
| 418 | #ifndef AV_WB32 |
| 419 | # define AV_WB32(p, v) AV_WB(32, p, v) |
| 420 | #endif |
| 421 | |
| 422 | #ifndef AV_RL32 |
| 423 | # define AV_RL32(p) AV_RL(32, p) |
| 424 | #endif |
| 425 | #ifndef AV_WL32 |
| 426 | # define AV_WL32(p, v) AV_WL(32, p, v) |
| 427 | #endif |
| 428 | |
| 429 | #ifndef AV_RB64 |
| 430 | # define AV_RB64(p) AV_RB(64, p) |
| 431 | #endif |
| 432 | #ifndef AV_WB64 |
| 433 | # define AV_WB64(p, v) AV_WB(64, p, v) |
| 434 | #endif |
| 435 | |
| 436 | #ifndef AV_RL64 |
| 437 | # define AV_RL64(p) AV_RL(64, p) |
| 438 | #endif |
| 439 | #ifndef AV_WL64 |
| 440 | # define AV_WL64(p, v) AV_WL(64, p, v) |
| 441 | #endif |
| 442 | |
| 443 | #ifndef AV_RB24 |
| 444 | # define AV_RB24(x) \ |
| 445 | ((((const uint8_t*)(x))[0] << 16) | \ |
| 446 | (((const uint8_t*)(x))[1] << 8) | \ |
| 447 | ((const uint8_t*)(x))[2]) |
| 448 | #endif |
| 449 | #ifndef AV_WB24 |
| 450 | # define AV_WB24(p, d) do { \ |
| 451 | ((uint8_t*)(p))[2] = (d); \ |
| 452 | ((uint8_t*)(p))[1] = (d)>>8; \ |
| 453 | ((uint8_t*)(p))[0] = (d)>>16; \ |
| 454 | } while(0) |
| 455 | #endif |
| 456 | |
| 457 | #ifndef AV_RL24 |
| 458 | # define AV_RL24(x) \ |
| 459 | ((((const uint8_t*)(x))[2] << 16) | \ |
| 460 | (((const uint8_t*)(x))[1] << 8) | \ |
| 461 | ((const uint8_t*)(x))[0]) |
| 462 | #endif |
| 463 | #ifndef AV_WL24 |
| 464 | # define AV_WL24(p, d) do { \ |
| 465 | ((uint8_t*)(p))[0] = (d); \ |
| 466 | ((uint8_t*)(p))[1] = (d)>>8; \ |
| 467 | ((uint8_t*)(p))[2] = (d)>>16; \ |
| 468 | } while(0) |
| 469 | #endif |
| 470 | |
| 471 | #ifndef AV_RB48 |
| 472 | # define AV_RB48(x) \ |
| 473 | (((uint64_t)((const uint8_t*)(x))[0] << 40) | \ |
| 474 | ((uint64_t)((const uint8_t*)(x))[1] << 32) | \ |
| 475 | ((uint64_t)((const uint8_t*)(x))[2] << 24) | \ |
| 476 | ((uint64_t)((const uint8_t*)(x))[3] << 16) | \ |
| 477 | ((uint64_t)((const uint8_t*)(x))[4] << 8) | \ |
| 478 | (uint64_t)((const uint8_t*)(x))[5]) |
| 479 | #endif |
| 480 | #ifndef AV_WB48 |
| 481 | # define AV_WB48(p, darg) do { \ |
| 482 | uint64_t d = (darg); \ |
| 483 | ((uint8_t*)(p))[5] = (d); \ |
| 484 | ((uint8_t*)(p))[4] = (d)>>8; \ |
| 485 | ((uint8_t*)(p))[3] = (d)>>16; \ |
| 486 | ((uint8_t*)(p))[2] = (d)>>24; \ |
| 487 | ((uint8_t*)(p))[1] = (d)>>32; \ |
| 488 | ((uint8_t*)(p))[0] = (d)>>40; \ |
| 489 | } while(0) |
| 490 | #endif |
| 491 | |
| 492 | #ifndef AV_RL48 |
| 493 | # define AV_RL48(x) \ |
| 494 | (((uint64_t)((const uint8_t*)(x))[5] << 40) | \ |
| 495 | ((uint64_t)((const uint8_t*)(x))[4] << 32) | \ |
| 496 | ((uint64_t)((const uint8_t*)(x))[3] << 24) | \ |
| 497 | ((uint64_t)((const uint8_t*)(x))[2] << 16) | \ |
| 498 | ((uint64_t)((const uint8_t*)(x))[1] << 8) | \ |
| 499 | (uint64_t)((const uint8_t*)(x))[0]) |
| 500 | #endif |
| 501 | #ifndef AV_WL48 |
| 502 | # define AV_WL48(p, darg) do { \ |
| 503 | uint64_t d = (darg); \ |
| 504 | ((uint8_t*)(p))[0] = (d); \ |
| 505 | ((uint8_t*)(p))[1] = (d)>>8; \ |
| 506 | ((uint8_t*)(p))[2] = (d)>>16; \ |
| 507 | ((uint8_t*)(p))[3] = (d)>>24; \ |
| 508 | ((uint8_t*)(p))[4] = (d)>>32; \ |
| 509 | ((uint8_t*)(p))[5] = (d)>>40; \ |
| 510 | } while(0) |
| 511 | #endif |
| 512 | |
| 513 | /* |
| 514 | * The AV_[RW]NA macros access naturally aligned data |
| 515 | * in a type-safe way. |
| 516 | */ |
| 517 | |
| 518 | #define AV_RNA(s, p) (((const av_alias##s*)(p))->u##s) |
| 519 | #define AV_WNA(s, p, v) (((av_alias##s*)(p))->u##s = (v)) |
| 520 | |
| 521 | #ifndef AV_RN16A |
| 522 | # define AV_RN16A(p) AV_RNA(16, p) |
| 523 | #endif |
| 524 | |
| 525 | #ifndef AV_RN32A |
| 526 | # define AV_RN32A(p) AV_RNA(32, p) |
| 527 | #endif |
| 528 | |
| 529 | #ifndef AV_RN64A |
| 530 | # define AV_RN64A(p) AV_RNA(64, p) |
| 531 | #endif |
| 532 | |
| 533 | #ifndef AV_WN16A |
| 534 | # define AV_WN16A(p, v) AV_WNA(16, p, v) |
| 535 | #endif |
| 536 | |
| 537 | #ifndef AV_WN32A |
| 538 | # define AV_WN32A(p, v) AV_WNA(32, p, v) |
| 539 | #endif |
| 540 | |
| 541 | #ifndef AV_WN64A |
| 542 | # define AV_WN64A(p, v) AV_WNA(64, p, v) |
| 543 | #endif |
| 544 | |
| 545 | /* |
| 546 | * The AV_COPYxxU macros are suitable for copying data to/from unaligned |
| 547 | * memory locations. |
| 548 | */ |
| 549 | |
| 550 | #define AV_COPYU(n, d, s) AV_WN##n(d, AV_RN##n(s)); |
| 551 | |
| 552 | #ifndef AV_COPY16U |
| 553 | # define AV_COPY16U(d, s) AV_COPYU(16, d, s) |
| 554 | #endif |
| 555 | |
| 556 | #ifndef AV_COPY32U |
| 557 | # define AV_COPY32U(d, s) AV_COPYU(32, d, s) |
| 558 | #endif |
| 559 | |
| 560 | #ifndef AV_COPY64U |
| 561 | # define AV_COPY64U(d, s) AV_COPYU(64, d, s) |
| 562 | #endif |
| 563 | |
| 564 | #ifndef AV_COPY128U |
| 565 | # define AV_COPY128U(d, s) \ |
| 566 | do { \ |
| 567 | AV_COPY64U(d, s); \ |
| 568 | AV_COPY64U((char *)(d) + 8, (const char *)(s) + 8); \ |
| 569 | } while(0) |
| 570 | #endif |
| 571 | |
| 572 | /* Parameters for AV_COPY*, AV_SWAP*, AV_ZERO* must be |
| 573 | * naturally aligned. They may be implemented using MMX, |
| 574 | * so emms_c() must be called before using any float code |
| 575 | * afterwards. |
| 576 | */ |
| 577 | |
| 578 | #define AV_COPY(n, d, s) \ |
| 579 | (((av_alias##n*)(d))->u##n = ((const av_alias##n*)(s))->u##n) |
| 580 | |
| 581 | #ifndef AV_COPY16 |
| 582 | # define AV_COPY16(d, s) AV_COPY(16, d, s) |
| 583 | #endif |
| 584 | |
| 585 | #ifndef AV_COPY32 |
| 586 | # define AV_COPY32(d, s) AV_COPY(32, d, s) |
| 587 | #endif |
| 588 | |
| 589 | #ifndef AV_COPY64 |
| 590 | # define AV_COPY64(d, s) AV_COPY(64, d, s) |
| 591 | #endif |
| 592 | |
| 593 | #ifndef AV_COPY128 |
| 594 | # define AV_COPY128(d, s) \ |
| 595 | do { \ |
| 596 | AV_COPY64(d, s); \ |
| 597 | AV_COPY64((char*)(d)+8, (char*)(s)+8); \ |
| 598 | } while(0) |
| 599 | #endif |
| 600 | |
| 601 | #define AV_SWAP(n, a, b) FFSWAP(av_alias##n, *(av_alias##n*)(a), *(av_alias##n*)(b)) |
| 602 | |
| 603 | #ifndef AV_SWAP64 |
| 604 | # define AV_SWAP64(a, b) AV_SWAP(64, a, b) |
| 605 | #endif |
| 606 | |
| 607 | #define AV_ZERO(n, d) (((av_alias##n*)(d))->u##n = 0) |
| 608 | |
| 609 | #ifndef AV_ZERO16 |
| 610 | # define AV_ZERO16(d) AV_ZERO(16, d) |
| 611 | #endif |
| 612 | |
| 613 | #ifndef AV_ZERO32 |
| 614 | # define AV_ZERO32(d) AV_ZERO(32, d) |
| 615 | #endif |
| 616 | |
| 617 | #ifndef AV_ZERO64 |
| 618 | # define AV_ZERO64(d) AV_ZERO(64, d) |
| 619 | #endif |
| 620 | |
| 621 | #ifndef AV_ZERO128 |
| 622 | # define AV_ZERO128(d) \ |
| 623 | do { \ |
| 624 | AV_ZERO64(d); \ |
| 625 | AV_ZERO64((char*)(d)+8); \ |
| 626 | } while(0) |
| 627 | #endif |
| 628 | |
| 629 | #endif /* AVUTIL_INTREADWRITE_H */ |