1 /* ------------------------------------------------------------------ 2 * Copyright (C) 1998-2009 PacketVideo 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13 * express or implied. 14 * See the License for the specific language governing permissions 15 * and limitations under the License. 16 * ------------------------------------------------------------------- 17 */ 18 /* 19 ------------------------------------------------------------------------------ 20 INPUT AND OUTPUT DEFINITIONS 21 22 Inputs: 23 xpos = x half-pixel of (x,y) coordinates within a VOP; motion 24 compensated coordinates; native type 25 ypos = y half-pixel of (x,y) coordinates within a VOP; motion 26 compensated coordinates; native type 27 comp = pointer to 8-bit compensated prediction values within a VOP; 28 computed by this module (i/o); full-pel resolution 29 c_prev = pointer to previous 8-bit prediction values within a VOP; 30 values range from (0-255); full-pel resolution 31 sh_d = pointer to residual values used to compensate the predicted 32 value; values range from (-512 to 511); full-pel resolution 33 width = width of the VOP in pixels (x axis); full-pel resolution 34 rnd1 = rounding value for case when one dimension uses half-pel 35 resolution 36 rnd2 = rounding value for case when two dimensions uses half-pel 37 resolution 38 CBP = flag indicating whether residual is all zeros 39 (0 -> all zeros, 1 -> not all zeros) 40 outside_flag = flag indicating whether motion vector is outside the 41 VOP (0 -> inside, 1 -> outside) 42 43 Outputs: 44 returns 1 45 46 Local Stores/Buffers/Pointers Needed: 47 None 48 49 Global Stores/Buffers/Pointers Needed: 50 None 51 52 Pointers and Buffers Modified: 53 comp = buffer contains newly computed compensated prediction values 54 55 Local Stores Modified: 56 None 57 58 Global Stores Modified: 59 None 60 61 ------------------------------------------------------------------------------ 62 FUNCTION DESCRIPTION 63 64 Compute pixel values for a block in the current VOP. The prediction 65 values are generated by averaging pixel values in the previous VOP; the 66 block position in the previous frame is computed from the current block's 67 motion vector. The computed pixel values are then computed by adding the 68 prediction values to the block residual values. 69 70 71 ------------------------------------------------------------------------------ 72 */ 73 74 /*---------------------------------------------------------------------------- 75 ; INCLUDES 76 ----------------------------------------------------------------------------*/ 77 #include "mp4dec_lib.h" 78 #include "motion_comp.h" 79 80 #define OSCL_DISABLE_WARNING_CONV_POSSIBLE_LOSS_OF_DATA 81 82 int GetPredAdvancedBy0x0( 83 uint8 *prev, /* i */ 84 uint8 *pred_block, /* i */ 85 int width, /* i */ 86 int pred_width_rnd /* i */ 87 ) 88 { 89 uint i; /* loop variable */ 90 int offset, offset2; 91 uint32 pred_word, word1, word2; 92 int tmp; 93 94 /* initialize offset to adjust pixel counter */ 95 /* the next row; full-pel resolution */ 96 offset = width - B_SIZE; /* offset for prev */ 97 offset2 = (pred_width_rnd >> 1) - 4; /* offset for pred_block */ 98 99 tmp = (uint32)prev & 0x3; 100 pred_block -= offset2; /* preset */ 101 102 if (tmp == 0) /* word-aligned */ 103 { 104 for (i = B_SIZE; i > 0; i--) 105 { 106 *((uint32*)(pred_block += offset2)) = *((uint32*)prev); 107 *((uint32*)(pred_block += 4)) = *((uint32*)(prev + 4)); 108 prev += width; 109 } 110 return 1; 111 } 112 else if (tmp == 1) /* first position */ 113 { 114 prev--; /* word-aligned */ 115 116 for (i = B_SIZE; i > 0; i--) 117 { 118 word1 = *((uint32*)prev); /* read 4 bytes, b4 b3 b2 b1 */ 119 word2 = *((uint32*)(prev += 4)); /* read 4 bytes, b8 b7 b6 b5 */ 120 word1 >>= 8; /* 0 b4 b3 b2 */ 121 pred_word = word1 | (word2 << 24); /* b5 b4 b3 b2 */ 122 *((uint32*)(pred_block += offset2)) = pred_word; 123 124 word1 = *((uint32*)(prev += 4)); /* b12 b11 b10 b9 */ 125 word2 >>= 8; /* 0 b8 b7 b6 */ 126 pred_word = word2 | (word1 << 24); /* b9 b8 b7 b6 */ 127 *((uint32*)(pred_block += 4)) = pred_word; 128 129 prev += offset; 130 } 131 132 return 1; 133 } 134 else if (tmp == 2) /* second position */ 135 { 136 prev -= 2; /* word1-aligned */ 137 138 for (i = B_SIZE; i > 0; i--) 139 { 140 word1 = *((uint32*)prev); /* read 4 bytes, b4 b3 b2 b1 */ 141 word2 = *((uint32*)(prev += 4)); /* read 4 bytes, b8 b7 b6 b5 */ 142 word1 >>= 16; /* 0 0 b4 b3 */ 143 pred_word = word1 | (word2 << 16); /* b6 b5 b4 b3 */ 144 *((uint32*)(pred_block += offset2)) = pred_word; 145 146 word1 = *((uint32*)(prev += 4)); /* b12 b11 b10 b9 */ 147 word2 >>= 16; /* 0 0 b8 b7 */ 148 pred_word = word2 | (word1 << 16); /* b10 b9 b8 b7 */ 149 *((uint32*)(pred_block += 4)) = pred_word; 150 151 152 prev += offset; 153 } 154 155 return 1; 156 } 157 else /* third position */ 158 { 159 prev -= 3; /* word1-aligned */ 160 161 for (i = B_SIZE; i > 0; i--) 162 { 163 word1 = *((uint32*)prev); /* read 4 bytes, b4 b3 b2 b1 */ 164 word2 = *((uint32*)(prev += 4)); /* read 4 bytes, b8 b7 b6 b5 */ 165 word1 >>= 24; /* 0 0 0 b4 */ 166 pred_word = word1 | (word2 << 8); /* b7 b6 b5 b4 */ 167 *((uint32*)(pred_block += offset2)) = pred_word; 168 169 word1 = *((uint32*)(prev += 4)); /* b12 b11 b10 b9 */ 170 word2 >>= 24; /* 0 0 0 b8 */ 171 pred_word = word2 | (word1 << 8); /* b11 b10 b9 b8 */ 172 *((uint32*)(pred_block += 4)) = pred_word; 173 174 prev += offset; 175 } 176 177 return 1; 178 } 179 } 180 181 /**************************************************************************/ 182 int GetPredAdvancedBy0x1( 183 uint8 *prev, /* i */ 184 uint8 *pred_block, /* i */ 185 int width, /* i */ 186 int pred_width_rnd /* i */ 187 ) 188 { 189 uint i; /* loop variable */ 190 int offset, offset2; 191 uint32 word1, word2, word3, word12; 192 int tmp; 193 int rnd1; 194 uint32 mask; 195 196 /* initialize offset to adjust pixel counter */ 197 /* the next row; full-pel resolution */ 198 offset = width - B_SIZE; /* offset for prev */ 199 offset2 = (pred_width_rnd >> 1) - 4; /* offset of pred_block */ 200 201 rnd1 = pred_width_rnd & 1; 202 203 /* Branch based on pixel location (half-pel or full-pel) for x and y */ 204 pred_block -= offset2; /* preset */ 205 206 tmp = (uint32)prev & 3; 207 mask = 254; 208 mask |= (mask << 8); 209 mask |= (mask << 16); /* 0xFEFEFEFE */ 210 211 if (tmp == 0) /* word-aligned */ 212 { 213 if (rnd1 == 1) 214 { 215 for (i = B_SIZE; i > 0; i--) 216 { 217 word1 = *((uint32*)prev); /* b4 b3 b2 b1 */ 218 word2 = *((uint32*)(prev += 4)); /* b8 b7 b6 b5 */ 219 word12 = (word1 >> 8); /* 0 b4 b3 b2 */ 220 word12 |= (word2 << 24); /* b5 b4 b3 b2 */ 221 word3 = word1 | word12; // rnd1 = 1; otherwise word3 = word1&word12 222 word1 &= mask; 223 word3 &= (~mask); /* 0x1010101, check last bit */ 224 word12 &= mask; 225 word1 >>= 1; 226 word1 = word1 + (word12 >> 1); 227 word1 += word3; 228 *((uint32*)(pred_block += offset2)) = word1; /* write 4 pixels */ 229 230 word1 = *((uint32*)(prev += 4)); /* b12 b11 b10 b9 */ 231 word12 = (word2 >> 8); /* 0 b8 b7 b6 */ 232 word12 |= (word1 << 24); /* b9 b8 b7 b6 */ 233 word3 = word2 | word12; 234 word2 &= mask; 235 word3 &= (~mask); /* 0x1010101, check last bit */ 236 word12 &= mask; 237 word2 >>= 1; 238 word2 = word2 + (word12 >> 1); 239 word2 += word3; 240 *((uint32*)(pred_block += 4)) = word2; /* write 4 pixels */ 241 242 prev += offset; 243 } 244 return 1; 245 } 246 else /* rnd1 == 0 */ 247 { 248 for (i = B_SIZE; i > 0; i--) 249 { 250 word1 = *((uint32*)prev); /* b4 b3 b2 b1 */ 251 252 word2 = *((uint32*)(prev += 4)); /* b8 b7 b6 b5 */ 253 word12 = (word1 >> 8); /* 0 b4 b3 b2 */ 254 word12 |= (word2 << 24); /* b5 b4 b3 b2 */ 255 word3 = word1 & word12; // rnd1 = 1; otherwise word3 = word1&word12 256 word1 &= mask; 257 word3 &= (~mask); /* 0x1010101, check last bit */ 258 word12 &= mask; 259 word1 >>= 1; 260 word1 = word1 + (word12 >> 1); 261 word1 += word3; 262 *((uint32*)(pred_block += offset2)) = word1; /* write 4 pixels */ 263 264 word1 = *((uint32*)(prev += 4)); /* b12 b11 b10 b9 */ 265 word12 = (word2 >> 8); /* 0 b8 b7 b6 */ 266 word12 |= (word1 << 24); /* b9 b8 b7 b6 */ 267 word3 = word2 & word12; 268 word2 &= mask; 269 word3 &= (~mask); /* 0x1010101, check last bit */ 270 word12 &= mask; 271 word2 >>= 1; 272 word2 = word2 + (word12 >> 1); 273 word2 += word3; 274 *((uint32*)(pred_block += 4)) = word2; /* write 4 pixels */ 275 276 prev += offset; 277 } 278 return 1; 279 } /* rnd1 */ 280 } 281 else if (tmp == 1) 282 { 283 prev--; /* word-aligned */ 284 if (rnd1 == 1) 285 { 286 for (i = B_SIZE; i > 0; i--) 287 { 288 word1 = *((uint32*)prev); /* b3 b2 b1 b0 */ 289 word2 = *((uint32*)(prev += 4)); /* b7 b6 b5 b4 */ 290 word12 = (word1 >> 8); /* 0 b3 b2 b1 */ 291 word1 >>= 16; /* 0 0 b3 b2 */ 292 word12 |= (word2 << 24); /* b4 b3 b2 b1 */ 293 word1 |= (word2 << 16); /* b5 b4 b3 b2 */ 294 word3 = word1 | word12; // rnd1 = 1; otherwise word3 = word1&word12 295 word1 &= mask; 296 word3 &= (~mask); /* 0x1010101, check last bit */ 297 word12 &= mask; 298 word1 >>= 1; 299 word1 = word1 + (word12 >> 1); 300 word1 += word3; 301 *((uint32*)(pred_block += offset2)) = word1; /* write 4 pixels */ 302 303 word1 = *((uint32*)(prev += 4)); /* b11 b10 b9 b8 */ 304 word12 = (word2 >> 8); /* 0 b7 b6 b5 */ 305 word2 >>= 16; /* 0 0 b7 b6 */ 306 word12 |= (word1 << 24); /* b8 b7 b6 b5 */ 307 word2 |= (word1 << 16); /* b9 b8 b7 b6 */ 308 word3 = word2 | word12; // rnd1 = 1; otherwise word3 = word2&word12 309 word2 &= mask; 310 word3 &= (~mask); /* 0x1010101, check last bit */ 311 word12 &= mask; 312 word2 >>= 1; 313 word2 = word2 + (word12 >> 1); 314 word2 += word3; 315 *((uint32*)(pred_block += 4)) = word2; /* write 4 pixels */ 316 317 prev += offset; 318 } 319 return 1; 320 } 321 else /* rnd1 = 0 */ 322 { 323 for (i = B_SIZE; i > 0; i--) 324 { 325 word1 = *((uint32*)prev); /* b3 b2 b1 b0 */ 326 327 word2 = *((uint32*)(prev += 4)); /* b7 b6 b5 b4 */ 328 word12 = (word1 >> 8); /* 0 b3 b2 b1 */ 329 word1 >>= 16; /* 0 0 b3 b2 */ 330 word12 |= (word2 << 24); /* b4 b3 b2 b1 */ 331 word1 |= (word2 << 16); /* b5 b4 b3 b2 */ 332 word3 = word1 & word12; 333 word1 &= mask; 334 word3 &= (~mask); /* 0x1010101, check last bit */ 335 word12 &= mask; 336 word1 >>= 1; 337 word1 = word1 + (word12 >> 1); 338 word1 += word3; 339 *((uint32*)(pred_block += offset2)) = word1; /* write 4 pixels */ 340 341 word1 = *((uint32*)(prev += 4)); /* b11 b10 b9 b8 */ 342 word12 = (word2 >> 8); /* 0 b7 b6 b5 */ 343 word2 >>= 16; /* 0 0 b7 b6 */ 344 word12 |= (word1 << 24); /* b8 b7 b6 b5 */ 345 word2 |= (word1 << 16); /* b9 b8 b7 b6 */ 346 word3 = word2 & word12; 347 word2 &= mask; 348 word3 &= (~mask); /* 0x1010101, check last bit */ 349 word12 &= mask; 350 word2 >>= 1; 351 word2 = word2 + (word12 >> 1); 352 word2 += word3; 353 *((uint32*)(pred_block += 4)) = word2; /* write 4 pixels */ 354 355 prev += offset; 356 } 357 return 1; 358 } /* rnd1 */ 359 } 360 else if (tmp == 2) 361 { 362 prev -= 2; /* word-aligned */ 363 if (rnd1 == 1) 364 { 365 for (i = B_SIZE; i > 0; i--) 366 { 367 word1 = *((uint32*)prev); /* b2 b1 b0 bN1 */ 368 word2 = *((uint32*)(prev += 4)); /* b6 b5 b4 b3 */ 369 word12 = (word1 >> 16); /* 0 0 b2 b1 */ 370 word1 >>= 24; /* 0 0 0 b2 */ 371 word12 |= (word2 << 16); /* b4 b3 b2 b1 */ 372 word1 |= (word2 << 8); /* b5 b4 b3 b2 */ 373 word3 = word1 | word12; // rnd1 = 1; otherwise word3 = word1&word12 374 word1 &= mask; 375 word3 &= (~mask); /* 0x1010101, check last bit */ 376 word12 &= mask; 377 word1 >>= 1; 378 word1 = word1 + (word12 >> 1); 379 word1 += word3; 380 *((uint32*)(pred_block += offset2)) = word1; /* write 4 pixels */ 381 382 word1 = *((uint32*)(prev += 4)); /* b10 b9 b8 b7 */ 383 word12 = (word2 >> 16); /* 0 0 b6 b5 */ 384 word2 >>= 24; /* 0 0 0 b6 */ 385 word12 |= (word1 << 16); /* b8 b7 b6 b5 */ 386 word2 |= (word1 << 8); /* b9 b8 b7 b6 */ 387 word3 = word2 | word12; // rnd1 = 1; otherwise word3 = word1&word12 388 word2 &= mask; 389 word3 &= (~mask); /* 0x1010101, check last bit */ 390 word12 &= mask; 391 word2 >>= 1; 392 word2 = word2 + (word12 >> 1); 393 word2 += word3; 394 *((uint32*)(pred_block += 4)) = word2; /* write 4 pixels */ 395 prev += offset; 396 } 397 return 1; 398 } 399 else /* rnd1 == 0 */ 400 { 401 for (i = B_SIZE; i > 0; i--) 402 { 403 word1 = *((uint32*)prev); /* b2 b1 b0 bN1 */ 404 word2 = *((uint32*)(prev += 4)); /* b6 b5 b4 b3 */ 405 word12 = (word1 >> 16); /* 0 0 b2 b1 */ 406 word1 >>= 24; /* 0 0 0 b2 */ 407 word12 |= (word2 << 16); /* b4 b3 b2 b1 */ 408 word1 |= (word2 << 8); /* b5 b4 b3 b2 */ 409 word3 = word1 & word12; // rnd1 = 1; otherwise word3 = word1&word12 410 word1 &= mask; 411 word3 &= (~mask); /* 0x1010101, check last bit */ 412 word12 &= mask; 413 word1 >>= 1; 414 word1 = word1 + (word12 >> 1); 415 word1 += word3; 416 *((uint32*)(pred_block += offset2)) = word1; /* write 4 pixels */ 417 418 word1 = *((uint32*)(prev += 4)); /* b10 b9 b8 b7 */ 419 word12 = (word2 >> 16); /* 0 0 b6 b5 */ 420 word2 >>= 24; /* 0 0 0 b6 */ 421 word12 |= (word1 << 16); /* b8 b7 b6 b5 */ 422 word2 |= (word1 << 8); /* b9 b8 b7 b6 */ 423 word3 = word2 & word12; // rnd1 = 1; otherwise word3 = word1&word12 424 word2 &= mask; 425 word3 &= (~mask); /* 0x1010101, check last bit */ 426 word12 &= mask; 427 word2 >>= 1; 428 word2 = word2 + (word12 >> 1); 429 word2 += word3; 430 *((uint32*)(pred_block += 4)) = word2; /* write 4 pixels */ 431 prev += offset; 432 } 433 return 1; 434 } 435 } 436 else /* tmp = 3 */ 437 { 438 prev -= 3; /* word-aligned */ 439 if (rnd1 == 1) 440 { 441 for (i = B_SIZE; i > 0; i--) 442 { 443 word1 = *((uint32*)prev); /* b1 b0 bN1 bN2 */ 444 word2 = *((uint32*)(prev += 4)); /* b5 b4 b3 b2 */ 445 word12 = (word1 >> 24); /* 0 0 0 b1 */ 446 word12 |= (word2 << 8); /* b4 b3 b2 b1 */ 447 word1 = word2; 448 word3 = word1 | word12; // rnd1 = 1; otherwise word3 = word1&word12 449 word1 &= mask; 450 word3 &= (~mask); /* 0x1010101, check last bit */ 451 word12 &= mask; 452 word1 >>= 1; 453 word1 = word1 + (word12 >> 1); 454 word1 += word3; 455 *((uint32*)(pred_block += offset2)) = word1; /* write 4 pixels */ 456 457 word1 = *((uint32*)(prev += 4)); /* b9 b8 b7 b6 */ 458 word12 = (word2 >> 24); /* 0 0 0 b5 */ 459 word12 |= (word1 << 8); /* b8 b7 b6 b5 */ 460 word2 = word1; /* b9 b8 b7 b6 */ 461 word3 = word2 | word12; // rnd1 = 1; otherwise word3 = word1&word12 462 word2 &= mask; 463 word3 &= (~mask); /* 0x1010101, check last bit */ 464 word12 &= mask; 465 word2 >>= 1; 466 word2 = word2 + (word12 >> 1); 467 word2 += word3; 468 *((uint32*)(pred_block += 4)) = word2; /* write 4 pixels */ 469 prev += offset; 470 } 471 return 1; 472 } 473 else 474 { 475 for (i = B_SIZE; i > 0; i--) 476 { 477 word1 = *((uint32*)prev); /* b1 b0 bN1 bN2 */ 478 word2 = *((uint32*)(prev += 4)); /* b5 b4 b3 b2 */ 479 word12 = (word1 >> 24); /* 0 0 0 b1 */ 480 word12 |= (word2 << 8); /* b4 b3 b2 b1 */ 481 word1 = word2; 482 word3 = word1 & word12; // rnd1 = 1; otherwise word3 = word1&word12 483 word1 &= mask; 484 word3 &= (~mask); /* 0x1010101, check last bit */ 485 word12 &= mask; 486 word1 >>= 1; 487 word1 = word1 + (word12 >> 1); 488 word1 += word3; 489 *((uint32*)(pred_block += offset2)) = word1; /* write 4 pixels */ 490 491 word1 = *((uint32*)(prev += 4)); /* b9 b8 b7 b6 */ 492 word12 = (word2 >> 24); /* 0 0 0 b5 */ 493 word12 |= (word1 << 8); /* b8 b7 b6 b5 */ 494 word2 = word1; /* b9 b8 b7 b6 */ 495 word3 = word2 & word12; // rnd1 = 1; otherwise word3 = word1&word12 496 word2 &= mask; 497 word3 &= (~mask); /* 0x1010101, check last bit */ 498 word12 &= mask; 499 word2 >>= 1; 500 word2 = word2 + (word12 >> 1); 501 word2 += word3; 502 *((uint32*)(pred_block += 4)) = word2; /* write 4 pixels */ 503 prev += offset; 504 } 505 return 1; 506 } 507 } 508 } 509 510 /**************************************************************************/ 511 int GetPredAdvancedBy1x0( 512 uint8 *prev, /* i */ 513 uint8 *pred_block, /* i */ 514 int width, /* i */ 515 int pred_width_rnd /* i */ 516 ) 517 { 518 uint i; /* loop variable */ 519 int offset, offset2; 520 uint32 word1, word2, word3, word12, word22; 521 int tmp; 522 int rnd1; 523 uint32 mask; 524 525 /* initialize offset to adjust pixel counter */ 526 /* the next row; full-pel resolution */ 527 offset = width - B_SIZE; /* offset for prev */ 528 offset2 = (pred_width_rnd >> 1) - 4; /* offset for pred_block */ 529 530 rnd1 = pred_width_rnd & 1; 531 532 /* Branch based on pixel location (half-pel or full-pel) for x and y */ 533 pred_block -= offset2; /* preset */ 534 535 tmp = (uint32)prev & 3; 536 mask = 254; 537 mask |= (mask << 8); 538 mask |= (mask << 16); /* 0xFEFEFEFE */ 539 540 if (tmp == 0) /* word-aligned */ 541 { 542 prev -= 4; 543 if (rnd1 == 1) 544 { 545 for (i = B_SIZE; i > 0; i--) 546 { 547 word1 = *((uint32*)(prev += 4)); 548 word2 = *((uint32*)(prev + width)); 549 word3 = word1 | word2; // rnd1 = 1; otherwise word3 = word1&word2 550 word1 &= mask; 551 word3 &= (~mask); /* 0x1010101, check last bit */ 552 word2 &= mask; 553 word1 >>= 1; 554 word1 = word1 + (word2 >> 1); 555 word1 += word3; 556 *((uint32*)(pred_block += offset2)) = word1; 557 word1 = *((uint32*)(prev += 4)); 558 word2 = *((uint32*)(prev + width)); 559 word3 = word1 | word2; // rnd1 = 1; otherwise word3 = word1&word2 560 word1 &= mask; 561 word3 &= (~mask); /* 0x1010101, check last bit */ 562 word2 &= mask; 563 word1 >>= 1; 564 word1 = word1 + (word2 >> 1); 565 word1 += word3; 566 *((uint32*)(pred_block += 4)) = word1; 567 568 prev += offset; 569 } 570 return 1; 571 } 572 else /* rnd1 = 0 */ 573 { 574 for (i = B_SIZE; i > 0; i--) 575 { 576 word1 = *((uint32*)(prev += 4)); 577 word2 = *((uint32*)(prev + width)); 578 word3 = word1 & word2; /* rnd1 = 0; */ 579 word1 &= mask; 580 word3 &= (~mask); /* 0x1010101, check last bit */ 581 word2 &= mask; 582 word1 >>= 1; 583 word1 = word1 + (word2 >> 1); 584 word1 += word3; 585 *((uint32*)(pred_block += offset2)) = word1; 586 word1 = *((uint32*)(prev += 4)); 587 word2 = *((uint32*)(prev + width)); 588 word3 = word1 & word2; /* rnd1 = 0; */ 589 word1 &= mask; 590 word3 &= (~mask); /* 0x1010101, check last bit */ 591 word2 &= mask; 592 word1 >>= 1; 593 word1 = word1 + (word2 >> 1); 594 word1 += word3; 595 *((uint32*)(pred_block += 4)) = word1; 596 597 prev += offset; 598 } 599 return 1; 600 } 601 } 602 else if (tmp == 1) 603 { 604 prev--; /* word-aligned */ 605 if (rnd1 == 1) 606 { 607 for (i = B_SIZE; i > 0; i--) 608 { 609 word12 = *((uint32*)prev); /* read b4 b3 b2 b1 */ 610 word22 = *((uint32*)(prev + width)); 611 612 word1 = *((uint32*)(prev += 4)); /* read b8 b7 b6 b5 */ 613 word2 = *((uint32*)(prev + width)); 614 word12 >>= 8; /* 0 b4 b3 b2 */ 615 word22 >>= 8; 616 word12 = word12 | (word1 << 24); /* b5 b4 b3 b2 */ 617 word22 = word22 | (word2 << 24); 618 word3 = word12 | word22; 619 word12 &= mask; 620 word22 &= mask; 621 word3 &= (~mask); /* 0x1010101, check last bit */ 622 word12 >>= 1; 623 word12 = word12 + (word22 >> 1); 624 word12 += word3; 625 *((uint32*)(pred_block += offset2)) = word12; 626 627 word12 = *((uint32*)(prev += 4)); /* read b12 b11 b10 b9 */ 628 word22 = *((uint32*)(prev + width)); 629 word1 >>= 8; /* 0 b8 b7 b6 */ 630 word2 >>= 8; 631 word1 = word1 | (word12 << 24); /* b9 b8 b7 b6 */ 632 word2 = word2 | (word22 << 24); 633 word3 = word1 | word2; 634 word1 &= mask; 635 word2 &= mask; 636 word3 &= (~mask); /* 0x1010101, check last bit */ 637 word1 >>= 1; 638 word1 = word1 + (word2 >> 1); 639 word1 += word3; 640 *((uint32*)(pred_block += 4)) = word1; 641 prev += offset; 642 } 643 return 1; 644 } 645 else /* rnd1 = 0 */ 646 { 647 for (i = B_SIZE; i > 0; i--) 648 { 649 word12 = *((uint32*)prev); /* read b4 b3 b2 b1 */ 650 word22 = *((uint32*)(prev + width)); 651 652 word1 = *((uint32*)(prev += 4)); /* read b8 b7 b6 b5 */ 653 word2 = *((uint32*)(prev + width)); 654 word12 >>= 8; /* 0 b4 b3 b2 */ 655 word22 >>= 8; 656 word12 = word12 | (word1 << 24); /* b5 b4 b3 b2 */ 657 word22 = word22 | (word2 << 24); 658 word3 = word12 & word22; 659 word12 &= mask; 660 word22 &= mask; 661 word3 &= (~mask); /* 0x1010101, check last bit */ 662 word12 >>= 1; 663 word12 = word12 + (word22 >> 1); 664 word12 += word3; 665 *((uint32*)(pred_block += offset2)) = word12; 666 667 word12 = *((uint32*)(prev += 4)); /* read b12 b11 b10 b9 */ 668 word22 = *((uint32*)(prev + width)); 669 word1 >>= 8; /* 0 b8 b7 b6 */ 670 word2 >>= 8; 671 word1 = word1 | (word12 << 24); /* b9 b8 b7 b6 */ 672 word2 = word2 | (word22 << 24); 673 word3 = word1 & word2; 674 word1 &= mask; 675 word2 &= mask; 676 word3 &= (~mask); /* 0x1010101, check last bit */ 677 word1 >>= 1; 678 word1 = word1 + (word2 >> 1); 679 word1 += word3; 680 *((uint32*)(pred_block += 4)) = word1; 681 prev += offset; 682 } 683 return 1; 684 } 685 } 686 else if (tmp == 2) 687 { 688 prev -= 2; /* word-aligned */ 689 if (rnd1 == 1) 690 { 691 for (i = B_SIZE; i > 0; i--) 692 { 693 word12 = *((uint32*)prev); /* read b4 b3 b2 b1 */ 694 word22 = *((uint32*)(prev + width)); 695 696 word1 = *((uint32*)(prev += 4)); /* read b8 b7 b6 b5 */ 697 word2 = *((uint32*)(prev + width)); 698 word12 >>= 16; /* 0 0 b4 b3 */ 699 word22 >>= 16; 700 word12 = word12 | (word1 << 16); /* b6 b5 b4 b3 */ 701 word22 = word22 | (word2 << 16); 702 word3 = word12 | word22; 703 word12 &= mask; 704 word22 &= mask; 705 word3 &= (~mask); /* 0x1010101, check last bit */ 706 word12 >>= 1; 707 word12 = word12 + (word22 >> 1); 708 word12 += word3; 709 *((uint32*)(pred_block += offset2)) = word12; 710 711 word12 = *((uint32*)(prev += 4)); /* read b12 b11 b10 b9 */ 712 word22 = *((uint32*)(prev + width)); 713 word1 >>= 16; /* 0 0 b8 b7 */ 714 word2 >>= 16; 715 word1 = word1 | (word12 << 16); /* b10 b9 b8 b7 */ 716 word2 = word2 | (word22 << 16); 717 word3 = word1 | word2; 718 word1 &= mask; 719 word2 &= mask; 720 word3 &= (~mask); /* 0x1010101, check last bit */ 721 word1 >>= 1; 722 word1 = word1 + (word2 >> 1); 723 word1 += word3; 724 *((uint32*)(pred_block += 4)) = word1; 725 prev += offset; 726 } 727 return 1; 728 } 729 else /* rnd1 = 0 */ 730 { 731 for (i = B_SIZE; i > 0; i--) 732 { 733 word12 = *((uint32*)prev); /* read b4 b3 b2 b1 */ 734 word22 = *((uint32*)(prev + width)); 735 736 word1 = *((uint32*)(prev += 4)); /* read b8 b7 b6 b5 */ 737 word2 = *((uint32*)(prev + width)); 738 word12 >>= 16; /* 0 0 b4 b3 */ 739 word22 >>= 16; 740 word12 = word12 | (word1 << 16); /* b6 b5 b4 b3 */ 741 word22 = word22 | (word2 << 16); 742 word3 = word12 & word22; 743 word12 &= mask; 744 word22 &= mask; 745 word3 &= (~mask); /* 0x1010101, check last bit */ 746 word12 >>= 1; 747 word12 = word12 + (word22 >> 1); 748 word12 += word3; 749 *((uint32*)(pred_block += offset2)) = word12; 750 751 word12 = *((uint32*)(prev += 4)); /* read b12 b11 b10 b9 */ 752 word22 = *((uint32*)(prev + width)); 753 word1 >>= 16; /* 0 0 b8 b7 */ 754 word2 >>= 16; 755 word1 = word1 | (word12 << 16); /* b10 b9 b8 b7 */ 756 word2 = word2 | (word22 << 16); 757 word3 = word1 & word2; 758 word1 &= mask; 759 word2 &= mask; 760 word3 &= (~mask); /* 0x1010101, check last bit */ 761 word1 >>= 1; 762 word1 = word1 + (word2 >> 1); 763 word1 += word3; 764 *((uint32*)(pred_block += 4)) = word1; 765 prev += offset; 766 } 767 768 return 1; 769 } 770 } 771 else /* tmp == 3 */ 772 { 773 prev -= 3; /* word-aligned */ 774 if (rnd1 == 1) 775 { 776 for (i = B_SIZE; i > 0; i--) 777 { 778 word12 = *((uint32*)prev); /* read b4 b3 b2 b1 */ 779 word22 = *((uint32*)(prev + width)); 780 781 word1 = *((uint32*)(prev += 4)); /* read b8 b7 b6 b5 */ 782 word2 = *((uint32*)(prev + width)); 783 word12 >>= 24; /* 0 0 0 b4 */ 784 word22 >>= 24; 785 word12 = word12 | (word1 << 8); /* b7 b6 b5 b4 */ 786 word22 = word22 | (word2 << 8); 787 word3 = word12 | word22; 788 word12 &= mask; 789 word22 &= mask; 790 word3 &= (~mask); /* 0x1010101, check last bit */ 791 word12 >>= 1; 792 word12 = word12 + (word22 >> 1); 793 word12 += word3; 794 *((uint32*)(pred_block += offset2)) = word12; 795 796 word12 = *((uint32*)(prev += 4)); /* read b12 b11 b10 b9 */ 797 word22 = *((uint32*)(prev + width)); 798 word1 >>= 24; /* 0 0 0 b8 */ 799 word2 >>= 24; 800 word1 = word1 | (word12 << 8); /* b11 b10 b9 b8 */ 801 word2 = word2 | (word22 << 8); 802 word3 = word1 | word2; 803 word1 &= mask; 804 word2 &= mask; 805 word3 &= (~mask); /* 0x1010101, check last bit */ 806 word1 >>= 1; 807 word1 = word1 + (word2 >> 1); 808 word1 += word3; 809 *((uint32*)(pred_block += 4)) = word1; 810 prev += offset; 811 } 812 return 1; 813 } 814 else /* rnd1 = 0 */ 815 { 816 for (i = B_SIZE; i > 0; i--) 817 { 818 word12 = *((uint32*)prev); /* read b4 b3 b2 b1 */ 819 word22 = *((uint32*)(prev + width)); 820 821 word1 = *((uint32*)(prev += 4)); /* read b8 b7 b6 b5 */ 822 word2 = *((uint32*)(prev + width)); 823 word12 >>= 24; /* 0 0 0 b4 */ 824 word22 >>= 24; 825 word12 = word12 | (word1 << 8); /* b7 b6 b5 b4 */ 826 word22 = word22 | (word2 << 8); 827 word3 = word12 & word22; 828 word12 &= mask; 829 word22 &= mask; 830 word3 &= (~mask); /* 0x1010101, check last bit */ 831 word12 >>= 1; 832 word12 = word12 + (word22 >> 1); 833 word12 += word3; 834 *((uint32*)(pred_block += offset2)) = word12; 835 836 word12 = *((uint32*)(prev += 4)); /* read b12 b11 b10 b9 */ 837 word22 = *((uint32*)(prev + width)); 838 word1 >>= 24; /* 0 0 0 b8 */ 839 word2 >>= 24; 840 word1 = word1 | (word12 << 8); /* b11 b10 b9 b8 */ 841 word2 = word2 | (word22 << 8); 842 word3 = word1 & word2; 843 word1 &= mask; 844 word2 &= mask; 845 word3 &= (~mask); /* 0x1010101, check last bit */ 846 word1 >>= 1; 847 word1 = word1 + (word2 >> 1); 848 word1 += word3; 849 *((uint32*)(pred_block += 4)) = word1; 850 prev += offset; 851 } 852 return 1; 853 } /* rnd */ 854 } /* tmp */ 855 } 856 857 /**********************************************************************************/ 858 int GetPredAdvancedBy1x1( 859 uint8 *prev, /* i */ 860 uint8 *pred_block, /* i */ 861 int width, /* i */ 862 int pred_width_rnd /* i */ 863 ) 864 { 865 uint i; /* loop variable */ 866 int offset, offset2; 867 uint32 x1, x2, x1m, x2m, y1, y2, y1m, y2m; /* new way */ 868 int tmp; 869 int rnd1, rnd2; 870 uint32 mask; 871 872 /* initialize offset to adjust pixel counter */ 873 /* the next row; full-pel resolution */ 874 offset = width - B_SIZE; /* offset for prev */ 875 offset2 = (pred_width_rnd >> 1) - 8; /* offset for pred_block */ 876 877 rnd1 = pred_width_rnd & 1; 878 879 rnd2 = rnd1 + 1; 880 rnd2 |= (rnd2 << 8); 881 rnd2 |= (rnd2 << 16); 882 883 mask = 0x3F; 884 mask |= (mask << 8); 885 mask |= (mask << 16); /* 0x3f3f3f3f */ 886 887 tmp = (uint32)prev & 3; 888 889 pred_block -= 4; /* preset */ 890 891 if (tmp == 0) /* word-aligned */ 892 { 893 for (i = B_SIZE; i > 0; i--) 894 { 895 x1 = *((uint32*)prev); /* load a3 a2 a1 a0 */ 896 x2 = *((uint32*)(prev + width)); /* load b3 b2 b1 b0, another line */ 897 y1 = *((uint32*)(prev += 4)); /* a7 a6 a5 a4 */ 898 y2 = *((uint32*)(prev + width)); /* b7 b6 b5 b4 */ 899 900 x1m = (x1 >> 2) & mask; /* zero out last 2 bits */ 901 x2m = (x2 >> 2) & mask; 902 x1 = x1 ^(x1m << 2); 903 x2 = x2 ^(x2m << 2); 904 x1m += x2m; 905 x1 += x2; 906 907 /* x2m, x2 free */ 908 y1m = (y1 >> 2) & mask; /* zero out last 2 bits */ 909 y2m = (y2 >> 2) & mask; 910 y1 = y1 ^(y1m << 2); 911 y2 = y2 ^(y2m << 2); 912 y1m += y2m; 913 y1 += y2; 914 915 /* y2m, y2 free */ 916 /* x2m, x2 free */ 917 x2 = *((uint32*)(prev += 4)); /* a11 a10 a9 a8 */ 918 y2 = *((uint32*)(prev + width)); /* b11 b10 b9 b8 */ 919 x2m = (x2 >> 2) & mask; 920 y2m = (y2 >> 2) & mask; 921 x2 = x2 ^(x2m << 2); 922 y2 = y2 ^(y2m << 2); 923 x2m += y2m; 924 x2 += y2; 925 /* y2m, y2 free */ 926 927 /* now operate on x1m, x1, y1m, y1, x2m, x2 */ 928 /* x1m = a3+b3, a2+b2, a1+b1, a0+b0 */ 929 /* y1m = a7+b7, a6+b6, a5+b5, a4+b4 */ 930 /* x2m = a11+b11, a10+b10, a9+b9, a8+b8 */ 931 /* x1, y1, x2 */ 932 933 y2m = x1m >> 8; 934 y2 = x1 >> 8; 935 y2m |= (y1m << 24); /* a4+b4, a3+b3, a2+b2, a1+b1 */ 936 y2 |= (y1 << 24); 937 x1m += y2m; /* a3+b3+a4+b4, ....., a0+b0+a1+b1 */ 938 x1 += y2; 939 x1 += rnd2; 940 x1 &= (mask << 2); 941 x1m += (x1 >> 2); 942 *((uint32*)(pred_block += 4)) = x1m; /* save x1m */ 943 944 y2m = y1m >> 8; 945 y2 = y1 >> 8; 946 y2m |= (x2m << 24); /* a8+b8, a7+b7, a6+b6, a5+b5 */ 947 y2 |= (x2 << 24); 948 y1m += y2m; /* a7+b7+a8+b8, ....., a4+b4+a5+b5 */ 949 y1 += y2; 950 y1 += rnd2; 951 y1 &= (mask << 2); 952 y1m += (y1 >> 2); 953 *((uint32*)(pred_block += 4)) = y1m; /* save y1m */ 954 955 pred_block += offset2; 956 prev += offset; 957 } 958 959 return 1; 960 } 961 else if (tmp == 1) 962 { 963 prev--; /* to word-aligned */ 964 for (i = B_SIZE; i > 0; i--) 965 { 966 x1 = *((uint32*)prev); /* load a3 a2 a1 a0 */ 967 x2 = *((uint32*)(prev + width)); /* load b3 b2 b1 b0, another line */ 968 y1 = *((uint32*)(prev += 4)); /* a7 a6 a5 a4 */ 969 y2 = *((uint32*)(prev + width)); /* b7 b6 b5 b4 */ 970 971 x1m = (x1 >> 2) & mask; /* zero out last 2 bits */ 972 x2m = (x2 >> 2) & mask; 973 x1 = x1 ^(x1m << 2); 974 x2 = x2 ^(x2m << 2); 975 x1m += x2m; 976 x1 += x2; 977 978 /* x2m, x2 free */ 979 y1m = (y1 >> 2) & mask; /* zero out last 2 bits */ 980 y2m = (y2 >> 2) & mask; 981 y1 = y1 ^(y1m << 2); 982 y2 = y2 ^(y2m << 2); 983 y1m += y2m; 984 y1 += y2; 985 986 /* y2m, y2 free */ 987 /* x2m, x2 free */ 988 x2 = *((uint32*)(prev += 4)); /* a11 a10 a9 a8 */ 989 y2 = *((uint32*)(prev + width)); /* b11 b10 b9 b8 */ 990 x2m = (x2 >> 2) & mask; 991 y2m = (y2 >> 2) & mask; 992 x2 = x2 ^(x2m << 2); 993 y2 = y2 ^(y2m << 2); 994 x2m += y2m; 995 x2 += y2; 996 /* y2m, y2 free */ 997 998 /* now operate on x1m, x1, y1m, y1, x2m, x2 */ 999 /* x1m = a3+b3, a2+b2, a1+b1, a0+b0 */ 1000 /* y1m = a7+b7, a6+b6, a5+b5, a4+b4 */ 1001 /* x2m = a11+b11, a10+b10, a9+b9, a8+b8 */ 1002 /* x1, y1, x2 */ 1003 1004 x1m >>= 8 ; 1005 x1 >>= 8; 1006 x1m |= (y1m << 24); /* a4+b4, a3+b3, a2+b2, a1+b1 */ 1007 x1 |= (y1 << 24); 1008 y2m = (y1m << 16); 1009 y2 = (y1 << 16); 1010 y2m |= (x1m >> 8); /* a5+b5, a4+b4, a3+b3, a2+b2 */ 1011 y2 |= (x1 >> 8); 1012 x1 += rnd2; 1013 x1m += y2m; /* a4+b4+a5+b5, ....., a1+b1+a2+b2 */ 1014 x1 += y2; 1015 x1 &= (mask << 2); 1016 x1m += (x1 >> 2); 1017 *((uint32*)(pred_block += 4)) = x1m; /* save x1m */ 1018 1019 y1m >>= 8; 1020 y1 >>= 8; 1021 y1m |= (x2m << 24); /* a8+b8, a7+b7, a6+b6, a5+b5 */ 1022 y1 |= (x2 << 24); 1023 y2m = (x2m << 16); 1024 y2 = (x2 << 16); 1025 y2m |= (y1m >> 8); /* a9+b9, a8+b8, a7+b7, a6+b6,*/ 1026 y2 |= (y1 >> 8); 1027 y1 += rnd2; 1028 y1m += y2m; /* a8+b8+a9+b9, ....., a5+b5+a6+b6 */ 1029 y1 += y2; 1030 y1 &= (mask << 2); 1031 y1m += (y1 >> 2); 1032 *((uint32*)(pred_block += 4)) = y1m; /* save y1m */ 1033 1034 pred_block += offset2; 1035 prev += offset; 1036 } 1037 return 1; 1038 } 1039 else if (tmp == 2) 1040 { 1041 prev -= 2; /* to word-aligned */ 1042 for (i = B_SIZE; i > 0; i--) 1043 { 1044 x1 = *((uint32*)prev); /* load a3 a2 a1 a0 */ 1045 x2 = *((uint32*)(prev + width)); /* load b3 b2 b1 b0, another line */ 1046 y1 = *((uint32*)(prev += 4)); /* a7 a6 a5 a4 */ 1047 y2 = *((uint32*)(prev + width)); /* b7 b6 b5 b4 */ 1048 1049 x1m = (x1 >> 2) & mask; /* zero out last 2 bits */ 1050 x2m = (x2 >> 2) & mask; 1051 x1 = x1 ^(x1m << 2); 1052 x2 = x2 ^(x2m << 2); 1053 x1m += x2m; 1054 x1 += x2; 1055 1056 /* x2m, x2 free */ 1057 y1m = (y1 >> 2) & mask; /* zero out last 2 bits */ 1058 y2m = (y2 >> 2) & mask; 1059 y1 = y1 ^(y1m << 2); 1060 y2 = y2 ^(y2m << 2); 1061 y1m += y2m; 1062 y1 += y2; 1063 1064 /* y2m, y2 free */ 1065 /* x2m, x2 free */ 1066 x2 = *((uint32*)(prev += 4)); /* a11 a10 a9 a8 */ 1067 y2 = *((uint32*)(prev + width)); /* b11 b10 b9 b8 */ 1068 x2m = (x2 >> 2) & mask; 1069 y2m = (y2 >> 2) & mask; 1070 x2 = x2 ^(x2m << 2); 1071 y2 = y2 ^(y2m << 2); 1072 x2m += y2m; 1073 x2 += y2; 1074 /* y2m, y2 free */ 1075 1076 /* now operate on x1m, x1, y1m, y1, x2m, x2 */ 1077 /* x1m = a3+b3, a2+b2, a1+b1, a0+b0 */ 1078 /* y1m = a7+b7, a6+b6, a5+b5, a4+b4 */ 1079 /* x2m = a11+b11, a10+b10, a9+b9, a8+b8 */ 1080 /* x1, y1, x2 */ 1081 1082 x1m >>= 16 ; 1083 x1 >>= 16; 1084 x1m |= (y1m << 16); /* a5+b5, a4+b4, a3+b3, a2+b2 */ 1085 x1 |= (y1 << 16); 1086 y2m = (y1m << 8); 1087 y2 = (y1 << 8); 1088 y2m |= (x1m >> 8); /* a6+b6, a5+b5, a4+b4, a3+b3 */ 1089 y2 |= (x1 >> 8); 1090 x1 += rnd2; 1091 x1m += y2m; /* a5+b5+a6+b6, ....., a2+b2+a3+b3 */ 1092 x1 += y2; 1093 x1 &= (mask << 2); 1094 x1m += (x1 >> 2); 1095 *((uint32*)(pred_block += 4)) = x1m; /* save x1m */ 1096 1097 y1m >>= 16; 1098 y1 >>= 16; 1099 y1m |= (x2m << 16); /* a9+b9, a8+b8, a7+b7, a6+b6 */ 1100 y1 |= (x2 << 16); 1101 y2m = (x2m << 8); 1102 y2 = (x2 << 8); 1103 y2m |= (y1m >> 8); /* a10+b10, a9+b9, a8+b8, a7+b7,*/ 1104 y2 |= (y1 >> 8); 1105 y1 += rnd2; 1106 y1m += y2m; /* a9+b9+a10+b10, ....., a6+b6+a7+b7 */ 1107 y1 += y2; 1108 y1 &= (mask << 2); 1109 y1m += (y1 >> 2); 1110 *((uint32*)(pred_block += 4)) = y1m; /* save y1m */ 1111 1112 pred_block += offset2; 1113 prev += offset; 1114 } 1115 return 1; 1116 } 1117 else /* tmp == 3 */ 1118 { 1119 prev -= 3; /* to word-aligned */ 1120 for (i = B_SIZE; i > 0; i--) 1121 { 1122 x1 = *((uint32*)prev); /* load a3 a2 a1 a0 */ 1123 x2 = *((uint32*)(prev + width)); /* load b3 b2 b1 b0, another line */ 1124 y1 = *((uint32*)(prev += 4)); /* a7 a6 a5 a4 */ 1125 y2 = *((uint32*)(prev + width)); /* b7 b6 b5 b4 */ 1126 1127 x1m = (x1 >> 2) & mask; /* zero out last 2 bits */ 1128 x2m = (x2 >> 2) & mask; 1129 x1 = x1 ^(x1m << 2); 1130 x2 = x2 ^(x2m << 2); 1131 x1m += x2m; 1132 x1 += x2; 1133 1134 /* x2m, x2 free */ 1135 y1m = (y1 >> 2) & mask; /* zero out last 2 bits */ 1136 y2m = (y2 >> 2) & mask; 1137 y1 = y1 ^(y1m << 2); 1138 y2 = y2 ^(y2m << 2); 1139 y1m += y2m; 1140 y1 += y2; 1141 1142 /* y2m, y2 free */ 1143 /* x2m, x2 free */ 1144 x2 = *((uint32*)(prev += 4)); /* a11 a10 a9 a8 */ 1145 y2 = *((uint32*)(prev + width)); /* b11 b10 b9 b8 */ 1146 x2m = (x2 >> 2) & mask; 1147 y2m = (y2 >> 2) & mask; 1148 x2 = x2 ^(x2m << 2); 1149 y2 = y2 ^(y2m << 2); 1150 x2m += y2m; 1151 x2 += y2; 1152 /* y2m, y2 free */ 1153 1154 /* now operate on x1m, x1, y1m, y1, x2m, x2 */ 1155 /* x1m = a3+b3, a2+b2, a1+b1, a0+b0 */ 1156 /* y1m = a7+b7, a6+b6, a5+b5, a4+b4 */ 1157 /* x2m = a11+b11, a10+b10, a9+b9, a8+b8 */ 1158 /* x1, y1, x2 */ 1159 1160 x1m >>= 24 ; 1161 x1 >>= 24; 1162 x1m |= (y1m << 8); /* a6+b6, a5+b5, a4+b4, a3+b3 */ 1163 x1 |= (y1 << 8); 1164 1165 x1m += y1m; /* a6+b6+a7+b7, ....., a3+b3+a4+b4 */ 1166 x1 += y1; 1167 x1 += rnd2; 1168 x1 &= (mask << 2); 1169 x1m += (x1 >> 2); 1170 *((uint32*)(pred_block += 4)) = x1m; /* save x1m */ 1171 1172 y1m >>= 24; 1173 y1 >>= 24; 1174 y1m |= (x2m << 8); /* a10+b10, a9+b9, a8+b8, a7+b7 */ 1175 y1 |= (x2 << 8); 1176 y1m += x2m; /* a10+b10+a11+b11, ....., a7+b7+a8+b8 */ 1177 y1 += x2; 1178 y1 += rnd2; 1179 y1 &= (mask << 2); 1180 y1m += (y1 >> 2); 1181 *((uint32*)(pred_block += 4)) = y1m; /* save y1m */ 1182 1183 pred_block += offset2; 1184 prev += offset; 1185 } 1186 return 1; 1187 } 1188 } 1189 1190 1191
