1 /* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "vpx_config.h" 12 #include "vp8_rtcd.h" 13 #include "./vpx_scale_rtcd.h" 14 #include "onyxd_int.h" 15 #include "vp8/common/header.h" 16 #include "vp8/common/reconintra4x4.h" 17 #include "vp8/common/reconinter.h" 18 #include "detokenize.h" 19 #include "vp8/common/common.h" 20 #include "vp8/common/invtrans.h" 21 #include "vp8/common/alloccommon.h" 22 #include "vp8/common/entropymode.h" 23 #include "vp8/common/quant_common.h" 24 #include "vpx_scale/vpx_scale.h" 25 #include "vp8/common/reconintra.h" 26 #include "vp8/common/setupintrarecon.h" 27 28 #include "decodemv.h" 29 #include "vp8/common/extend.h" 30 #if CONFIG_ERROR_CONCEALMENT 31 #include "error_concealment.h" 32 #endif 33 #include "vpx_mem/vpx_mem.h" 34 #include "vp8/common/threading.h" 35 #include "decoderthreading.h" 36 #include "dboolhuff.h" 37 #include "vpx_dsp/vpx_dsp_common.h" 38 39 #include <assert.h> 40 #include <stdio.h> 41 42 void vp8cx_init_de_quantizer(VP8D_COMP *pbi) { 43 int Q; 44 VP8_COMMON *const pc = &pbi->common; 45 46 for (Q = 0; Q < QINDEX_RANGE; ++Q) { 47 pc->Y1dequant[Q][0] = (short)vp8_dc_quant(Q, pc->y1dc_delta_q); 48 pc->Y2dequant[Q][0] = (short)vp8_dc2quant(Q, pc->y2dc_delta_q); 49 pc->UVdequant[Q][0] = (short)vp8_dc_uv_quant(Q, pc->uvdc_delta_q); 50 51 pc->Y1dequant[Q][1] = (short)vp8_ac_yquant(Q); 52 pc->Y2dequant[Q][1] = (short)vp8_ac2quant(Q, pc->y2ac_delta_q); 53 pc->UVdequant[Q][1] = (short)vp8_ac_uv_quant(Q, pc->uvac_delta_q); 54 } 55 } 56 57 void vp8_mb_init_dequantizer(VP8D_COMP *pbi, MACROBLOCKD *xd) { 58 int i; 59 int QIndex; 60 MB_MODE_INFO *mbmi = &xd->mode_info_context->mbmi; 61 VP8_COMMON *const pc = &pbi->common; 62 63 /* Decide whether to use the default or alternate baseline Q value. */ 64 if (xd->segmentation_enabled) { 65 /* Abs Value */ 66 if (xd->mb_segement_abs_delta == SEGMENT_ABSDATA) { 67 QIndex = xd->segment_feature_data[MB_LVL_ALT_Q][mbmi->segment_id]; 68 69 /* Delta Value */ 70 } else { 71 QIndex = pc->base_qindex + 72 xd->segment_feature_data[MB_LVL_ALT_Q][mbmi->segment_id]; 73 } 74 75 QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) 76 : 0; /* Clamp to valid range */ 77 } else { 78 QIndex = pc->base_qindex; 79 } 80 81 /* Set up the macroblock dequant constants */ 82 xd->dequant_y1_dc[0] = 1; 83 xd->dequant_y1[0] = pc->Y1dequant[QIndex][0]; 84 xd->dequant_y2[0] = pc->Y2dequant[QIndex][0]; 85 xd->dequant_uv[0] = pc->UVdequant[QIndex][0]; 86 87 for (i = 1; i < 16; ++i) { 88 xd->dequant_y1_dc[i] = xd->dequant_y1[i] = pc->Y1dequant[QIndex][1]; 89 xd->dequant_y2[i] = pc->Y2dequant[QIndex][1]; 90 xd->dequant_uv[i] = pc->UVdequant[QIndex][1]; 91 } 92 } 93 94 static void decode_macroblock(VP8D_COMP *pbi, MACROBLOCKD *xd, 95 unsigned int mb_idx) { 96 MB_PREDICTION_MODE mode; 97 int i; 98 #if CONFIG_ERROR_CONCEALMENT 99 int corruption_detected = 0; 100 #else 101 (void)mb_idx; 102 #endif 103 104 if (xd->mode_info_context->mbmi.mb_skip_coeff) { 105 vp8_reset_mb_tokens_context(xd); 106 } else if (!vp8dx_bool_error(xd->current_bc)) { 107 int eobtotal; 108 eobtotal = vp8_decode_mb_tokens(pbi, xd); 109 110 /* Special case: Force the loopfilter to skip when eobtotal is zero */ 111 xd->mode_info_context->mbmi.mb_skip_coeff = (eobtotal == 0); 112 } 113 114 mode = xd->mode_info_context->mbmi.mode; 115 116 if (xd->segmentation_enabled) vp8_mb_init_dequantizer(pbi, xd); 117 118 #if CONFIG_ERROR_CONCEALMENT 119 120 if (pbi->ec_active) { 121 int throw_residual; 122 /* When we have independent partitions we can apply residual even 123 * though other partitions within the frame are corrupt. 124 */ 125 throw_residual = 126 (!pbi->independent_partitions && pbi->frame_corrupt_residual); 127 throw_residual = (throw_residual || vp8dx_bool_error(xd->current_bc)); 128 129 if ((mb_idx >= pbi->mvs_corrupt_from_mb || throw_residual)) { 130 /* MB with corrupt residuals or corrupt mode/motion vectors. 131 * Better to use the predictor as reconstruction. 132 */ 133 pbi->frame_corrupt_residual = 1; 134 memset(xd->qcoeff, 0, sizeof(xd->qcoeff)); 135 136 corruption_detected = 1; 137 138 /* force idct to be skipped for B_PRED and use the 139 * prediction only for reconstruction 140 * */ 141 memset(xd->eobs, 0, 25); 142 } 143 } 144 #endif 145 146 /* do prediction */ 147 if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME) { 148 vp8_build_intra_predictors_mbuv_s( 149 xd, xd->recon_above[1], xd->recon_above[2], xd->recon_left[1], 150 xd->recon_left[2], xd->recon_left_stride[1], xd->dst.u_buffer, 151 xd->dst.v_buffer, xd->dst.uv_stride); 152 153 if (mode != B_PRED) { 154 vp8_build_intra_predictors_mby_s( 155 xd, xd->recon_above[0], xd->recon_left[0], xd->recon_left_stride[0], 156 xd->dst.y_buffer, xd->dst.y_stride); 157 } else { 158 short *DQC = xd->dequant_y1; 159 int dst_stride = xd->dst.y_stride; 160 161 /* clear out residual eob info */ 162 if (xd->mode_info_context->mbmi.mb_skip_coeff) memset(xd->eobs, 0, 25); 163 164 intra_prediction_down_copy(xd, xd->recon_above[0] + 16); 165 166 for (i = 0; i < 16; ++i) { 167 BLOCKD *b = &xd->block[i]; 168 unsigned char *dst = xd->dst.y_buffer + b->offset; 169 B_PREDICTION_MODE b_mode = xd->mode_info_context->bmi[i].as_mode; 170 unsigned char *Above = dst - dst_stride; 171 unsigned char *yleft = dst - 1; 172 int left_stride = dst_stride; 173 unsigned char top_left = Above[-1]; 174 175 vp8_intra4x4_predict(Above, yleft, left_stride, b_mode, dst, dst_stride, 176 top_left); 177 178 if (xd->eobs[i]) { 179 if (xd->eobs[i] > 1) { 180 vp8_dequant_idct_add(b->qcoeff, DQC, dst, dst_stride); 181 } else { 182 vp8_dc_only_idct_add(b->qcoeff[0] * DQC[0], dst, dst_stride, dst, 183 dst_stride); 184 memset(b->qcoeff, 0, 2 * sizeof(b->qcoeff[0])); 185 } 186 } 187 } 188 } 189 } else { 190 vp8_build_inter_predictors_mb(xd); 191 } 192 193 #if CONFIG_ERROR_CONCEALMENT 194 if (corruption_detected) { 195 return; 196 } 197 #endif 198 199 if (!xd->mode_info_context->mbmi.mb_skip_coeff) { 200 /* dequantization and idct */ 201 if (mode != B_PRED) { 202 short *DQC = xd->dequant_y1; 203 204 if (mode != SPLITMV) { 205 BLOCKD *b = &xd->block[24]; 206 207 /* do 2nd order transform on the dc block */ 208 if (xd->eobs[24] > 1) { 209 vp8_dequantize_b(b, xd->dequant_y2); 210 211 vp8_short_inv_walsh4x4(&b->dqcoeff[0], xd->qcoeff); 212 memset(b->qcoeff, 0, 16 * sizeof(b->qcoeff[0])); 213 } else { 214 b->dqcoeff[0] = b->qcoeff[0] * xd->dequant_y2[0]; 215 vp8_short_inv_walsh4x4_1(&b->dqcoeff[0], xd->qcoeff); 216 memset(b->qcoeff, 0, 2 * sizeof(b->qcoeff[0])); 217 } 218 219 /* override the dc dequant constant in order to preserve the 220 * dc components 221 */ 222 DQC = xd->dequant_y1_dc; 223 } 224 225 vp8_dequant_idct_add_y_block(xd->qcoeff, DQC, xd->dst.y_buffer, 226 xd->dst.y_stride, xd->eobs); 227 } 228 229 vp8_dequant_idct_add_uv_block(xd->qcoeff + 16 * 16, xd->dequant_uv, 230 xd->dst.u_buffer, xd->dst.v_buffer, 231 xd->dst.uv_stride, xd->eobs + 16); 232 } 233 } 234 235 static int get_delta_q(vp8_reader *bc, int prev, int *q_update) { 236 int ret_val = 0; 237 238 if (vp8_read_bit(bc)) { 239 ret_val = vp8_read_literal(bc, 4); 240 241 if (vp8_read_bit(bc)) ret_val = -ret_val; 242 } 243 244 /* Trigger a quantizer update if the delta-q value has changed */ 245 if (ret_val != prev) *q_update = 1; 246 247 return ret_val; 248 } 249 250 #ifdef PACKET_TESTING 251 #include <stdio.h> 252 FILE *vpxlog = 0; 253 #endif 254 255 static void yv12_extend_frame_top_c(YV12_BUFFER_CONFIG *ybf) { 256 int i; 257 unsigned char *src_ptr1; 258 unsigned char *dest_ptr1; 259 260 unsigned int Border; 261 int plane_stride; 262 263 /***********/ 264 /* Y Plane */ 265 /***********/ 266 Border = ybf->border; 267 plane_stride = ybf->y_stride; 268 src_ptr1 = ybf->y_buffer - Border; 269 dest_ptr1 = src_ptr1 - (Border * plane_stride); 270 271 for (i = 0; i < (int)Border; ++i) { 272 memcpy(dest_ptr1, src_ptr1, plane_stride); 273 dest_ptr1 += plane_stride; 274 } 275 276 /***********/ 277 /* U Plane */ 278 /***********/ 279 plane_stride = ybf->uv_stride; 280 Border /= 2; 281 src_ptr1 = ybf->u_buffer - Border; 282 dest_ptr1 = src_ptr1 - (Border * plane_stride); 283 284 for (i = 0; i < (int)(Border); ++i) { 285 memcpy(dest_ptr1, src_ptr1, plane_stride); 286 dest_ptr1 += plane_stride; 287 } 288 289 /***********/ 290 /* V Plane */ 291 /***********/ 292 293 src_ptr1 = ybf->v_buffer - Border; 294 dest_ptr1 = src_ptr1 - (Border * plane_stride); 295 296 for (i = 0; i < (int)(Border); ++i) { 297 memcpy(dest_ptr1, src_ptr1, plane_stride); 298 dest_ptr1 += plane_stride; 299 } 300 } 301 302 static void yv12_extend_frame_bottom_c(YV12_BUFFER_CONFIG *ybf) { 303 int i; 304 unsigned char *src_ptr1, *src_ptr2; 305 unsigned char *dest_ptr2; 306 307 unsigned int Border; 308 int plane_stride; 309 int plane_height; 310 311 /***********/ 312 /* Y Plane */ 313 /***********/ 314 Border = ybf->border; 315 plane_stride = ybf->y_stride; 316 plane_height = ybf->y_height; 317 318 src_ptr1 = ybf->y_buffer - Border; 319 src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride; 320 dest_ptr2 = src_ptr2 + plane_stride; 321 322 for (i = 0; i < (int)Border; ++i) { 323 memcpy(dest_ptr2, src_ptr2, plane_stride); 324 dest_ptr2 += plane_stride; 325 } 326 327 /***********/ 328 /* U Plane */ 329 /***********/ 330 plane_stride = ybf->uv_stride; 331 plane_height = ybf->uv_height; 332 Border /= 2; 333 334 src_ptr1 = ybf->u_buffer - Border; 335 src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride; 336 dest_ptr2 = src_ptr2 + plane_stride; 337 338 for (i = 0; i < (int)(Border); ++i) { 339 memcpy(dest_ptr2, src_ptr2, plane_stride); 340 dest_ptr2 += plane_stride; 341 } 342 343 /***********/ 344 /* V Plane */ 345 /***********/ 346 347 src_ptr1 = ybf->v_buffer - Border; 348 src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride; 349 dest_ptr2 = src_ptr2 + plane_stride; 350 351 for (i = 0; i < (int)(Border); ++i) { 352 memcpy(dest_ptr2, src_ptr2, plane_stride); 353 dest_ptr2 += plane_stride; 354 } 355 } 356 357 static void yv12_extend_frame_left_right_c(YV12_BUFFER_CONFIG *ybf, 358 unsigned char *y_src, 359 unsigned char *u_src, 360 unsigned char *v_src) { 361 int i; 362 unsigned char *src_ptr1, *src_ptr2; 363 unsigned char *dest_ptr1, *dest_ptr2; 364 365 unsigned int Border; 366 int plane_stride; 367 int plane_height; 368 int plane_width; 369 370 /***********/ 371 /* Y Plane */ 372 /***********/ 373 Border = ybf->border; 374 plane_stride = ybf->y_stride; 375 plane_height = 16; 376 plane_width = ybf->y_width; 377 378 /* copy the left and right most columns out */ 379 src_ptr1 = y_src; 380 src_ptr2 = src_ptr1 + plane_width - 1; 381 dest_ptr1 = src_ptr1 - Border; 382 dest_ptr2 = src_ptr2 + 1; 383 384 for (i = 0; i < plane_height; ++i) { 385 memset(dest_ptr1, src_ptr1[0], Border); 386 memset(dest_ptr2, src_ptr2[0], Border); 387 src_ptr1 += plane_stride; 388 src_ptr2 += plane_stride; 389 dest_ptr1 += plane_stride; 390 dest_ptr2 += plane_stride; 391 } 392 393 /***********/ 394 /* U Plane */ 395 /***********/ 396 plane_stride = ybf->uv_stride; 397 plane_height = 8; 398 plane_width = ybf->uv_width; 399 Border /= 2; 400 401 /* copy the left and right most columns out */ 402 src_ptr1 = u_src; 403 src_ptr2 = src_ptr1 + plane_width - 1; 404 dest_ptr1 = src_ptr1 - Border; 405 dest_ptr2 = src_ptr2 + 1; 406 407 for (i = 0; i < plane_height; ++i) { 408 memset(dest_ptr1, src_ptr1[0], Border); 409 memset(dest_ptr2, src_ptr2[0], Border); 410 src_ptr1 += plane_stride; 411 src_ptr2 += plane_stride; 412 dest_ptr1 += plane_stride; 413 dest_ptr2 += plane_stride; 414 } 415 416 /***********/ 417 /* V Plane */ 418 /***********/ 419 420 /* copy the left and right most columns out */ 421 src_ptr1 = v_src; 422 src_ptr2 = src_ptr1 + plane_width - 1; 423 dest_ptr1 = src_ptr1 - Border; 424 dest_ptr2 = src_ptr2 + 1; 425 426 for (i = 0; i < plane_height; ++i) { 427 memset(dest_ptr1, src_ptr1[0], Border); 428 memset(dest_ptr2, src_ptr2[0], Border); 429 src_ptr1 += plane_stride; 430 src_ptr2 += plane_stride; 431 dest_ptr1 += plane_stride; 432 dest_ptr2 += plane_stride; 433 } 434 } 435 436 static void decode_mb_rows(VP8D_COMP *pbi) { 437 VP8_COMMON *const pc = &pbi->common; 438 MACROBLOCKD *const xd = &pbi->mb; 439 440 MODE_INFO *lf_mic = xd->mode_info_context; 441 442 int ibc = 0; 443 int num_part = 1 << pc->multi_token_partition; 444 445 int recon_yoffset, recon_uvoffset; 446 int mb_row, mb_col; 447 int mb_idx = 0; 448 449 YV12_BUFFER_CONFIG *yv12_fb_new = pbi->dec_fb_ref[INTRA_FRAME]; 450 451 int recon_y_stride = yv12_fb_new->y_stride; 452 int recon_uv_stride = yv12_fb_new->uv_stride; 453 454 unsigned char *ref_buffer[MAX_REF_FRAMES][3]; 455 unsigned char *dst_buffer[3]; 456 unsigned char *lf_dst[3]; 457 unsigned char *eb_dst[3]; 458 int i; 459 int ref_fb_corrupted[MAX_REF_FRAMES]; 460 461 ref_fb_corrupted[INTRA_FRAME] = 0; 462 463 for (i = 1; i < MAX_REF_FRAMES; ++i) { 464 YV12_BUFFER_CONFIG *this_fb = pbi->dec_fb_ref[i]; 465 466 ref_buffer[i][0] = this_fb->y_buffer; 467 ref_buffer[i][1] = this_fb->u_buffer; 468 ref_buffer[i][2] = this_fb->v_buffer; 469 470 ref_fb_corrupted[i] = this_fb->corrupted; 471 } 472 473 /* Set up the buffer pointers */ 474 eb_dst[0] = lf_dst[0] = dst_buffer[0] = yv12_fb_new->y_buffer; 475 eb_dst[1] = lf_dst[1] = dst_buffer[1] = yv12_fb_new->u_buffer; 476 eb_dst[2] = lf_dst[2] = dst_buffer[2] = yv12_fb_new->v_buffer; 477 478 xd->up_available = 0; 479 480 /* Initialize the loop filter for this frame. */ 481 if (pc->filter_level) vp8_loop_filter_frame_init(pc, xd, pc->filter_level); 482 483 vp8_setup_intra_recon_top_line(yv12_fb_new); 484 485 /* Decode the individual macro block */ 486 for (mb_row = 0; mb_row < pc->mb_rows; ++mb_row) { 487 if (num_part > 1) { 488 xd->current_bc = &pbi->mbc[ibc]; 489 ibc++; 490 491 if (ibc == num_part) ibc = 0; 492 } 493 494 recon_yoffset = mb_row * recon_y_stride * 16; 495 recon_uvoffset = mb_row * recon_uv_stride * 8; 496 497 /* reset contexts */ 498 xd->above_context = pc->above_context; 499 memset(xd->left_context, 0, sizeof(ENTROPY_CONTEXT_PLANES)); 500 501 xd->left_available = 0; 502 503 xd->mb_to_top_edge = -((mb_row * 16) << 3); 504 xd->mb_to_bottom_edge = ((pc->mb_rows - 1 - mb_row) * 16) << 3; 505 506 xd->recon_above[0] = dst_buffer[0] + recon_yoffset; 507 xd->recon_above[1] = dst_buffer[1] + recon_uvoffset; 508 xd->recon_above[2] = dst_buffer[2] + recon_uvoffset; 509 510 xd->recon_left[0] = xd->recon_above[0] - 1; 511 xd->recon_left[1] = xd->recon_above[1] - 1; 512 xd->recon_left[2] = xd->recon_above[2] - 1; 513 514 xd->recon_above[0] -= xd->dst.y_stride; 515 xd->recon_above[1] -= xd->dst.uv_stride; 516 xd->recon_above[2] -= xd->dst.uv_stride; 517 518 /* TODO: move to outside row loop */ 519 xd->recon_left_stride[0] = xd->dst.y_stride; 520 xd->recon_left_stride[1] = xd->dst.uv_stride; 521 522 setup_intra_recon_left(xd->recon_left[0], xd->recon_left[1], 523 xd->recon_left[2], xd->dst.y_stride, 524 xd->dst.uv_stride); 525 526 for (mb_col = 0; mb_col < pc->mb_cols; ++mb_col) { 527 /* Distance of Mb to the various image edges. 528 * These are specified to 8th pel as they are always compared to values 529 * that are in 1/8th pel units 530 */ 531 xd->mb_to_left_edge = -((mb_col * 16) << 3); 532 xd->mb_to_right_edge = ((pc->mb_cols - 1 - mb_col) * 16) << 3; 533 534 #if CONFIG_ERROR_CONCEALMENT 535 { 536 int corrupt_residual = 537 (!pbi->independent_partitions && pbi->frame_corrupt_residual) || 538 vp8dx_bool_error(xd->current_bc); 539 if (pbi->ec_active && 540 xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME && 541 corrupt_residual) { 542 /* We have an intra block with corrupt coefficients, better to 543 * conceal with an inter block. Interpolate MVs from neighboring 544 * MBs. 545 * 546 * Note that for the first mb with corrupt residual in a frame, 547 * we might not discover that before decoding the residual. That 548 * happens after this check, and therefore no inter concealment 549 * will be done. 550 */ 551 vp8_interpolate_motion(xd, mb_row, mb_col, pc->mb_rows, pc->mb_cols); 552 } 553 } 554 #endif 555 556 xd->dst.y_buffer = dst_buffer[0] + recon_yoffset; 557 xd->dst.u_buffer = dst_buffer[1] + recon_uvoffset; 558 xd->dst.v_buffer = dst_buffer[2] + recon_uvoffset; 559 560 if (xd->mode_info_context->mbmi.ref_frame >= LAST_FRAME) { 561 const MV_REFERENCE_FRAME ref = xd->mode_info_context->mbmi.ref_frame; 562 xd->pre.y_buffer = ref_buffer[ref][0] + recon_yoffset; 563 xd->pre.u_buffer = ref_buffer[ref][1] + recon_uvoffset; 564 xd->pre.v_buffer = ref_buffer[ref][2] + recon_uvoffset; 565 } else { 566 // ref_frame is INTRA_FRAME, pre buffer should not be used. 567 xd->pre.y_buffer = 0; 568 xd->pre.u_buffer = 0; 569 xd->pre.v_buffer = 0; 570 } 571 572 /* propagate errors from reference frames */ 573 xd->corrupted |= ref_fb_corrupted[xd->mode_info_context->mbmi.ref_frame]; 574 575 decode_macroblock(pbi, xd, mb_idx); 576 577 mb_idx++; 578 xd->left_available = 1; 579 580 /* check if the boolean decoder has suffered an error */ 581 xd->corrupted |= vp8dx_bool_error(xd->current_bc); 582 583 xd->recon_above[0] += 16; 584 xd->recon_above[1] += 8; 585 xd->recon_above[2] += 8; 586 xd->recon_left[0] += 16; 587 xd->recon_left[1] += 8; 588 xd->recon_left[2] += 8; 589 590 recon_yoffset += 16; 591 recon_uvoffset += 8; 592 593 ++xd->mode_info_context; /* next mb */ 594 595 xd->above_context++; 596 } 597 598 /* adjust to the next row of mbs */ 599 vp8_extend_mb_row(yv12_fb_new, xd->dst.y_buffer + 16, xd->dst.u_buffer + 8, 600 xd->dst.v_buffer + 8); 601 602 ++xd->mode_info_context; /* skip prediction column */ 603 xd->up_available = 1; 604 605 if (pc->filter_level) { 606 if (mb_row > 0) { 607 if (pc->filter_type == NORMAL_LOOPFILTER) { 608 vp8_loop_filter_row_normal(pc, lf_mic, mb_row - 1, recon_y_stride, 609 recon_uv_stride, lf_dst[0], lf_dst[1], 610 lf_dst[2]); 611 } else { 612 vp8_loop_filter_row_simple(pc, lf_mic, mb_row - 1, recon_y_stride, 613 recon_uv_stride, lf_dst[0], lf_dst[1], 614 lf_dst[2]); 615 } 616 if (mb_row > 1) { 617 yv12_extend_frame_left_right_c(yv12_fb_new, eb_dst[0], eb_dst[1], 618 eb_dst[2]); 619 620 eb_dst[0] += recon_y_stride * 16; 621 eb_dst[1] += recon_uv_stride * 8; 622 eb_dst[2] += recon_uv_stride * 8; 623 } 624 625 lf_dst[0] += recon_y_stride * 16; 626 lf_dst[1] += recon_uv_stride * 8; 627 lf_dst[2] += recon_uv_stride * 8; 628 lf_mic += pc->mb_cols; 629 lf_mic++; /* Skip border mb */ 630 } 631 } else { 632 if (mb_row > 0) { 633 /**/ 634 yv12_extend_frame_left_right_c(yv12_fb_new, eb_dst[0], eb_dst[1], 635 eb_dst[2]); 636 eb_dst[0] += recon_y_stride * 16; 637 eb_dst[1] += recon_uv_stride * 8; 638 eb_dst[2] += recon_uv_stride * 8; 639 } 640 } 641 } 642 643 if (pc->filter_level) { 644 if (pc->filter_type == NORMAL_LOOPFILTER) { 645 vp8_loop_filter_row_normal(pc, lf_mic, mb_row - 1, recon_y_stride, 646 recon_uv_stride, lf_dst[0], lf_dst[1], 647 lf_dst[2]); 648 } else { 649 vp8_loop_filter_row_simple(pc, lf_mic, mb_row - 1, recon_y_stride, 650 recon_uv_stride, lf_dst[0], lf_dst[1], 651 lf_dst[2]); 652 } 653 654 yv12_extend_frame_left_right_c(yv12_fb_new, eb_dst[0], eb_dst[1], 655 eb_dst[2]); 656 eb_dst[0] += recon_y_stride * 16; 657 eb_dst[1] += recon_uv_stride * 8; 658 eb_dst[2] += recon_uv_stride * 8; 659 } 660 yv12_extend_frame_left_right_c(yv12_fb_new, eb_dst[0], eb_dst[1], eb_dst[2]); 661 yv12_extend_frame_top_c(yv12_fb_new); 662 yv12_extend_frame_bottom_c(yv12_fb_new); 663 } 664 665 static unsigned int read_partition_size(VP8D_COMP *pbi, 666 const unsigned char *cx_size) { 667 unsigned char temp[3]; 668 if (pbi->decrypt_cb) { 669 pbi->decrypt_cb(pbi->decrypt_state, cx_size, temp, 3); 670 cx_size = temp; 671 } 672 return cx_size[0] + (cx_size[1] << 8) + (cx_size[2] << 16); 673 } 674 675 static int read_is_valid(const unsigned char *start, size_t len, 676 const unsigned char *end) { 677 return (start + len > start && start + len <= end); 678 } 679 680 static unsigned int read_available_partition_size( 681 VP8D_COMP *pbi, const unsigned char *token_part_sizes, 682 const unsigned char *fragment_start, 683 const unsigned char *first_fragment_end, const unsigned char *fragment_end, 684 int i, int num_part) { 685 VP8_COMMON *pc = &pbi->common; 686 const unsigned char *partition_size_ptr = token_part_sizes + i * 3; 687 unsigned int partition_size = 0; 688 ptrdiff_t bytes_left = fragment_end - fragment_start; 689 /* Calculate the length of this partition. The last partition 690 * size is implicit. If the partition size can't be read, then 691 * either use the remaining data in the buffer (for EC mode) 692 * or throw an error. 693 */ 694 if (i < num_part - 1) { 695 if (read_is_valid(partition_size_ptr, 3, first_fragment_end)) { 696 partition_size = read_partition_size(pbi, partition_size_ptr); 697 } else if (pbi->ec_active) { 698 partition_size = (unsigned int)bytes_left; 699 } else { 700 vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, 701 "Truncated partition size data"); 702 } 703 } else { 704 partition_size = (unsigned int)bytes_left; 705 } 706 707 /* Validate the calculated partition length. If the buffer 708 * described by the partition can't be fully read, then restrict 709 * it to the portion that can be (for EC mode) or throw an error. 710 */ 711 if (!read_is_valid(fragment_start, partition_size, fragment_end)) { 712 if (pbi->ec_active) { 713 partition_size = (unsigned int)bytes_left; 714 } else { 715 vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, 716 "Truncated packet or corrupt partition " 717 "%d length", 718 i + 1); 719 } 720 } 721 return partition_size; 722 } 723 724 static void setup_token_decoder(VP8D_COMP *pbi, 725 const unsigned char *token_part_sizes) { 726 vp8_reader *bool_decoder = &pbi->mbc[0]; 727 unsigned int partition_idx; 728 unsigned int fragment_idx; 729 unsigned int num_token_partitions; 730 const unsigned char *first_fragment_end = 731 pbi->fragments.ptrs[0] + pbi->fragments.sizes[0]; 732 733 TOKEN_PARTITION multi_token_partition = 734 (TOKEN_PARTITION)vp8_read_literal(&pbi->mbc[8], 2); 735 if (!vp8dx_bool_error(&pbi->mbc[8])) { 736 pbi->common.multi_token_partition = multi_token_partition; 737 } 738 num_token_partitions = 1 << pbi->common.multi_token_partition; 739 740 /* Check for partitions within the fragments and unpack the fragments 741 * so that each fragment pointer points to its corresponding partition. */ 742 for (fragment_idx = 0; fragment_idx < pbi->fragments.count; ++fragment_idx) { 743 unsigned int fragment_size = pbi->fragments.sizes[fragment_idx]; 744 const unsigned char *fragment_end = 745 pbi->fragments.ptrs[fragment_idx] + fragment_size; 746 /* Special case for handling the first partition since we have already 747 * read its size. */ 748 if (fragment_idx == 0) { 749 /* Size of first partition + token partition sizes element */ 750 ptrdiff_t ext_first_part_size = token_part_sizes - 751 pbi->fragments.ptrs[0] + 752 3 * (num_token_partitions - 1); 753 fragment_size -= (unsigned int)ext_first_part_size; 754 if (fragment_size > 0) { 755 pbi->fragments.sizes[0] = (unsigned int)ext_first_part_size; 756 /* The fragment contains an additional partition. Move to 757 * next. */ 758 fragment_idx++; 759 pbi->fragments.ptrs[fragment_idx] = 760 pbi->fragments.ptrs[0] + pbi->fragments.sizes[0]; 761 } 762 } 763 /* Split the chunk into partitions read from the bitstream */ 764 while (fragment_size > 0) { 765 ptrdiff_t partition_size = read_available_partition_size( 766 pbi, token_part_sizes, pbi->fragments.ptrs[fragment_idx], 767 first_fragment_end, fragment_end, fragment_idx - 1, 768 num_token_partitions); 769 pbi->fragments.sizes[fragment_idx] = (unsigned int)partition_size; 770 fragment_size -= (unsigned int)partition_size; 771 assert(fragment_idx <= num_token_partitions); 772 if (fragment_size > 0) { 773 /* The fragment contains an additional partition. 774 * Move to next. */ 775 fragment_idx++; 776 pbi->fragments.ptrs[fragment_idx] = 777 pbi->fragments.ptrs[fragment_idx - 1] + partition_size; 778 } 779 } 780 } 781 782 pbi->fragments.count = num_token_partitions + 1; 783 784 for (partition_idx = 1; partition_idx < pbi->fragments.count; 785 ++partition_idx) { 786 if (vp8dx_start_decode(bool_decoder, pbi->fragments.ptrs[partition_idx], 787 pbi->fragments.sizes[partition_idx], pbi->decrypt_cb, 788 pbi->decrypt_state)) { 789 vpx_internal_error(&pbi->common.error, VPX_CODEC_MEM_ERROR, 790 "Failed to allocate bool decoder %d", partition_idx); 791 } 792 793 bool_decoder++; 794 } 795 796 #if CONFIG_MULTITHREAD 797 /* Clamp number of decoder threads */ 798 if (pbi->decoding_thread_count > num_token_partitions - 1) { 799 pbi->decoding_thread_count = num_token_partitions - 1; 800 } 801 if ((int)pbi->decoding_thread_count > pbi->common.mb_rows - 1) { 802 assert(pbi->common.mb_rows > 0); 803 pbi->decoding_thread_count = pbi->common.mb_rows - 1; 804 } 805 #endif 806 } 807 808 static void init_frame(VP8D_COMP *pbi) { 809 VP8_COMMON *const pc = &pbi->common; 810 MACROBLOCKD *const xd = &pbi->mb; 811 812 if (pc->frame_type == KEY_FRAME) { 813 /* Various keyframe initializations */ 814 memcpy(pc->fc.mvc, vp8_default_mv_context, sizeof(vp8_default_mv_context)); 815 816 vp8_init_mbmode_probs(pc); 817 818 vp8_default_coef_probs(pc); 819 820 /* reset the segment feature data to 0 with delta coding (Default state). */ 821 memset(xd->segment_feature_data, 0, sizeof(xd->segment_feature_data)); 822 xd->mb_segement_abs_delta = SEGMENT_DELTADATA; 823 824 /* reset the mode ref deltasa for loop filter */ 825 memset(xd->ref_lf_deltas, 0, sizeof(xd->ref_lf_deltas)); 826 memset(xd->mode_lf_deltas, 0, sizeof(xd->mode_lf_deltas)); 827 828 /* All buffers are implicitly updated on key frames. */ 829 pc->refresh_golden_frame = 1; 830 pc->refresh_alt_ref_frame = 1; 831 pc->copy_buffer_to_gf = 0; 832 pc->copy_buffer_to_arf = 0; 833 834 /* Note that Golden and Altref modes cannot be used on a key frame so 835 * ref_frame_sign_bias[] is undefined and meaningless 836 */ 837 pc->ref_frame_sign_bias[GOLDEN_FRAME] = 0; 838 pc->ref_frame_sign_bias[ALTREF_FRAME] = 0; 839 } else { 840 /* To enable choice of different interploation filters */ 841 if (!pc->use_bilinear_mc_filter) { 842 xd->subpixel_predict = vp8_sixtap_predict4x4; 843 xd->subpixel_predict8x4 = vp8_sixtap_predict8x4; 844 xd->subpixel_predict8x8 = vp8_sixtap_predict8x8; 845 xd->subpixel_predict16x16 = vp8_sixtap_predict16x16; 846 } else { 847 xd->subpixel_predict = vp8_bilinear_predict4x4; 848 xd->subpixel_predict8x4 = vp8_bilinear_predict8x4; 849 xd->subpixel_predict8x8 = vp8_bilinear_predict8x8; 850 xd->subpixel_predict16x16 = vp8_bilinear_predict16x16; 851 } 852 853 if (pbi->decoded_key_frame && pbi->ec_enabled && !pbi->ec_active) { 854 pbi->ec_active = 1; 855 } 856 } 857 858 xd->left_context = &pc->left_context; 859 xd->mode_info_context = pc->mi; 860 xd->frame_type = pc->frame_type; 861 xd->mode_info_context->mbmi.mode = DC_PRED; 862 xd->mode_info_stride = pc->mode_info_stride; 863 xd->corrupted = 0; /* init without corruption */ 864 865 xd->fullpixel_mask = 0xffffffff; 866 if (pc->full_pixel) xd->fullpixel_mask = 0xfffffff8; 867 } 868 869 int vp8_decode_frame(VP8D_COMP *pbi) { 870 vp8_reader *const bc = &pbi->mbc[8]; 871 VP8_COMMON *const pc = &pbi->common; 872 MACROBLOCKD *const xd = &pbi->mb; 873 const unsigned char *data = pbi->fragments.ptrs[0]; 874 const unsigned int data_sz = pbi->fragments.sizes[0]; 875 const unsigned char *data_end = data + data_sz; 876 ptrdiff_t first_partition_length_in_bytes; 877 878 int i, j, k, l; 879 const int *const mb_feature_data_bits = vp8_mb_feature_data_bits; 880 int corrupt_tokens = 0; 881 int prev_independent_partitions = pbi->independent_partitions; 882 883 YV12_BUFFER_CONFIG *yv12_fb_new = pbi->dec_fb_ref[INTRA_FRAME]; 884 885 /* start with no corruption of current frame */ 886 xd->corrupted = 0; 887 yv12_fb_new->corrupted = 0; 888 889 if (data_end - data < 3) { 890 if (!pbi->ec_active) { 891 vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, 892 "Truncated packet"); 893 } 894 895 /* Declare the missing frame as an inter frame since it will 896 be handled as an inter frame when we have estimated its 897 motion vectors. */ 898 pc->frame_type = INTER_FRAME; 899 pc->version = 0; 900 pc->show_frame = 1; 901 first_partition_length_in_bytes = 0; 902 } else { 903 unsigned char clear_buffer[10]; 904 const unsigned char *clear = data; 905 if (pbi->decrypt_cb) { 906 int n = (int)VPXMIN(sizeof(clear_buffer), data_sz); 907 pbi->decrypt_cb(pbi->decrypt_state, data, clear_buffer, n); 908 clear = clear_buffer; 909 } 910 911 pc->frame_type = (FRAME_TYPE)(clear[0] & 1); 912 pc->version = (clear[0] >> 1) & 7; 913 pc->show_frame = (clear[0] >> 4) & 1; 914 first_partition_length_in_bytes = 915 (clear[0] | (clear[1] << 8) | (clear[2] << 16)) >> 5; 916 917 if (!pbi->ec_active && (data + first_partition_length_in_bytes > data_end || 918 data + first_partition_length_in_bytes < data)) { 919 vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, 920 "Truncated packet or corrupt partition 0 length"); 921 } 922 923 data += 3; 924 clear += 3; 925 926 vp8_setup_version(pc); 927 928 if (pc->frame_type == KEY_FRAME) { 929 /* vet via sync code */ 930 /* When error concealment is enabled we should only check the sync 931 * code if we have enough bits available 932 */ 933 if (data + 3 < data_end) { 934 if (clear[0] != 0x9d || clear[1] != 0x01 || clear[2] != 0x2a) { 935 vpx_internal_error(&pc->error, VPX_CODEC_UNSUP_BITSTREAM, 936 "Invalid frame sync code"); 937 } 938 } 939 940 /* If error concealment is enabled we should only parse the new size 941 * if we have enough data. Otherwise we will end up with the wrong 942 * size. 943 */ 944 if (data + 6 < data_end) { 945 pc->Width = (clear[3] | (clear[4] << 8)) & 0x3fff; 946 pc->horiz_scale = clear[4] >> 6; 947 pc->Height = (clear[5] | (clear[6] << 8)) & 0x3fff; 948 pc->vert_scale = clear[6] >> 6; 949 data += 7; 950 } else if (!pbi->ec_active) { 951 vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, 952 "Truncated key frame header"); 953 } else { 954 /* Error concealment is active, clear the frame. */ 955 data = data_end; 956 } 957 } else { 958 memcpy(&xd->pre, yv12_fb_new, sizeof(YV12_BUFFER_CONFIG)); 959 memcpy(&xd->dst, yv12_fb_new, sizeof(YV12_BUFFER_CONFIG)); 960 } 961 } 962 if ((!pbi->decoded_key_frame && pc->frame_type != KEY_FRAME)) { 963 return -1; 964 } 965 966 init_frame(pbi); 967 968 if (vp8dx_start_decode(bc, data, (unsigned int)(data_end - data), 969 pbi->decrypt_cb, pbi->decrypt_state)) { 970 vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR, 971 "Failed to allocate bool decoder 0"); 972 } 973 if (pc->frame_type == KEY_FRAME) { 974 (void)vp8_read_bit(bc); // colorspace 975 pc->clamp_type = (CLAMP_TYPE)vp8_read_bit(bc); 976 } 977 978 /* Is segmentation enabled */ 979 xd->segmentation_enabled = (unsigned char)vp8_read_bit(bc); 980 981 if (xd->segmentation_enabled) { 982 /* Signal whether or not the segmentation map is being explicitly updated 983 * this frame. */ 984 xd->update_mb_segmentation_map = (unsigned char)vp8_read_bit(bc); 985 xd->update_mb_segmentation_data = (unsigned char)vp8_read_bit(bc); 986 987 if (xd->update_mb_segmentation_data) { 988 xd->mb_segement_abs_delta = (unsigned char)vp8_read_bit(bc); 989 990 memset(xd->segment_feature_data, 0, sizeof(xd->segment_feature_data)); 991 992 /* For each segmentation feature (Quant and loop filter level) */ 993 for (i = 0; i < MB_LVL_MAX; ++i) { 994 for (j = 0; j < MAX_MB_SEGMENTS; ++j) { 995 /* Frame level data */ 996 if (vp8_read_bit(bc)) { 997 xd->segment_feature_data[i][j] = 998 (signed char)vp8_read_literal(bc, mb_feature_data_bits[i]); 999 1000 if (vp8_read_bit(bc)) { 1001 xd->segment_feature_data[i][j] = -xd->segment_feature_data[i][j]; 1002 } 1003 } else { 1004 xd->segment_feature_data[i][j] = 0; 1005 } 1006 } 1007 } 1008 } 1009 1010 if (xd->update_mb_segmentation_map) { 1011 /* Which macro block level features are enabled */ 1012 memset(xd->mb_segment_tree_probs, 255, sizeof(xd->mb_segment_tree_probs)); 1013 1014 /* Read the probs used to decode the segment id for each macro block. */ 1015 for (i = 0; i < MB_FEATURE_TREE_PROBS; ++i) { 1016 /* If not explicitly set value is defaulted to 255 by memset above */ 1017 if (vp8_read_bit(bc)) { 1018 xd->mb_segment_tree_probs[i] = (vp8_prob)vp8_read_literal(bc, 8); 1019 } 1020 } 1021 } 1022 } else { 1023 /* No segmentation updates on this frame */ 1024 xd->update_mb_segmentation_map = 0; 1025 xd->update_mb_segmentation_data = 0; 1026 } 1027 1028 /* Read the loop filter level and type */ 1029 pc->filter_type = (LOOPFILTERTYPE)vp8_read_bit(bc); 1030 pc->filter_level = vp8_read_literal(bc, 6); 1031 pc->sharpness_level = vp8_read_literal(bc, 3); 1032 1033 /* Read in loop filter deltas applied at the MB level based on mode or ref 1034 * frame. */ 1035 xd->mode_ref_lf_delta_update = 0; 1036 xd->mode_ref_lf_delta_enabled = (unsigned char)vp8_read_bit(bc); 1037 1038 if (xd->mode_ref_lf_delta_enabled) { 1039 /* Do the deltas need to be updated */ 1040 xd->mode_ref_lf_delta_update = (unsigned char)vp8_read_bit(bc); 1041 1042 if (xd->mode_ref_lf_delta_update) { 1043 /* Send update */ 1044 for (i = 0; i < MAX_REF_LF_DELTAS; ++i) { 1045 if (vp8_read_bit(bc)) { 1046 /*sign = vp8_read_bit( bc );*/ 1047 xd->ref_lf_deltas[i] = (signed char)vp8_read_literal(bc, 6); 1048 1049 if (vp8_read_bit(bc)) { /* Apply sign */ 1050 xd->ref_lf_deltas[i] = xd->ref_lf_deltas[i] * -1; 1051 } 1052 } 1053 } 1054 1055 /* Send update */ 1056 for (i = 0; i < MAX_MODE_LF_DELTAS; ++i) { 1057 if (vp8_read_bit(bc)) { 1058 /*sign = vp8_read_bit( bc );*/ 1059 xd->mode_lf_deltas[i] = (signed char)vp8_read_literal(bc, 6); 1060 1061 if (vp8_read_bit(bc)) { /* Apply sign */ 1062 xd->mode_lf_deltas[i] = xd->mode_lf_deltas[i] * -1; 1063 } 1064 } 1065 } 1066 } 1067 } 1068 1069 setup_token_decoder(pbi, data + first_partition_length_in_bytes); 1070 1071 xd->current_bc = &pbi->mbc[0]; 1072 1073 /* Read the default quantizers. */ 1074 { 1075 int Q, q_update; 1076 1077 Q = vp8_read_literal(bc, 7); /* AC 1st order Q = default */ 1078 pc->base_qindex = Q; 1079 q_update = 0; 1080 pc->y1dc_delta_q = get_delta_q(bc, pc->y1dc_delta_q, &q_update); 1081 pc->y2dc_delta_q = get_delta_q(bc, pc->y2dc_delta_q, &q_update); 1082 pc->y2ac_delta_q = get_delta_q(bc, pc->y2ac_delta_q, &q_update); 1083 pc->uvdc_delta_q = get_delta_q(bc, pc->uvdc_delta_q, &q_update); 1084 pc->uvac_delta_q = get_delta_q(bc, pc->uvac_delta_q, &q_update); 1085 1086 if (q_update) vp8cx_init_de_quantizer(pbi); 1087 1088 /* MB level dequantizer setup */ 1089 vp8_mb_init_dequantizer(pbi, &pbi->mb); 1090 } 1091 1092 /* Determine if the golden frame or ARF buffer should be updated and how. 1093 * For all non key frames the GF and ARF refresh flags and sign bias 1094 * flags must be set explicitly. 1095 */ 1096 if (pc->frame_type != KEY_FRAME) { 1097 /* Should the GF or ARF be updated from the current frame */ 1098 pc->refresh_golden_frame = vp8_read_bit(bc); 1099 #if CONFIG_ERROR_CONCEALMENT 1100 /* Assume we shouldn't refresh golden if the bit is missing */ 1101 xd->corrupted |= vp8dx_bool_error(bc); 1102 if (pbi->ec_active && xd->corrupted) pc->refresh_golden_frame = 0; 1103 #endif 1104 1105 pc->refresh_alt_ref_frame = vp8_read_bit(bc); 1106 #if CONFIG_ERROR_CONCEALMENT 1107 /* Assume we shouldn't refresh altref if the bit is missing */ 1108 xd->corrupted |= vp8dx_bool_error(bc); 1109 if (pbi->ec_active && xd->corrupted) pc->refresh_alt_ref_frame = 0; 1110 #endif 1111 1112 /* Buffer to buffer copy flags. */ 1113 pc->copy_buffer_to_gf = 0; 1114 1115 if (!pc->refresh_golden_frame) { 1116 pc->copy_buffer_to_gf = vp8_read_literal(bc, 2); 1117 } 1118 1119 #if CONFIG_ERROR_CONCEALMENT 1120 /* Assume we shouldn't copy to the golden if the bit is missing */ 1121 xd->corrupted |= vp8dx_bool_error(bc); 1122 if (pbi->ec_active && xd->corrupted) pc->copy_buffer_to_gf = 0; 1123 #endif 1124 1125 pc->copy_buffer_to_arf = 0; 1126 1127 if (!pc->refresh_alt_ref_frame) { 1128 pc->copy_buffer_to_arf = vp8_read_literal(bc, 2); 1129 } 1130 1131 #if CONFIG_ERROR_CONCEALMENT 1132 /* Assume we shouldn't copy to the alt-ref if the bit is missing */ 1133 xd->corrupted |= vp8dx_bool_error(bc); 1134 if (pbi->ec_active && xd->corrupted) pc->copy_buffer_to_arf = 0; 1135 #endif 1136 1137 pc->ref_frame_sign_bias[GOLDEN_FRAME] = vp8_read_bit(bc); 1138 pc->ref_frame_sign_bias[ALTREF_FRAME] = vp8_read_bit(bc); 1139 } 1140 1141 pc->refresh_entropy_probs = vp8_read_bit(bc); 1142 #if CONFIG_ERROR_CONCEALMENT 1143 /* Assume we shouldn't refresh the probabilities if the bit is 1144 * missing */ 1145 xd->corrupted |= vp8dx_bool_error(bc); 1146 if (pbi->ec_active && xd->corrupted) pc->refresh_entropy_probs = 0; 1147 #endif 1148 if (pc->refresh_entropy_probs == 0) { 1149 memcpy(&pc->lfc, &pc->fc, sizeof(pc->fc)); 1150 } 1151 1152 pc->refresh_last_frame = pc->frame_type == KEY_FRAME || vp8_read_bit(bc); 1153 1154 #if CONFIG_ERROR_CONCEALMENT 1155 /* Assume we should refresh the last frame if the bit is missing */ 1156 xd->corrupted |= vp8dx_bool_error(bc); 1157 if (pbi->ec_active && xd->corrupted) pc->refresh_last_frame = 1; 1158 #endif 1159 1160 if (0) { 1161 FILE *z = fopen("decodestats.stt", "a"); 1162 fprintf(z, "%6d F:%d,G:%d,A:%d,L:%d,Q:%d\n", pc->current_video_frame, 1163 pc->frame_type, pc->refresh_golden_frame, pc->refresh_alt_ref_frame, 1164 pc->refresh_last_frame, pc->base_qindex); 1165 fclose(z); 1166 } 1167 1168 { 1169 pbi->independent_partitions = 1; 1170 1171 /* read coef probability tree */ 1172 for (i = 0; i < BLOCK_TYPES; ++i) { 1173 for (j = 0; j < COEF_BANDS; ++j) { 1174 for (k = 0; k < PREV_COEF_CONTEXTS; ++k) { 1175 for (l = 0; l < ENTROPY_NODES; ++l) { 1176 vp8_prob *const p = pc->fc.coef_probs[i][j][k] + l; 1177 1178 if (vp8_read(bc, vp8_coef_update_probs[i][j][k][l])) { 1179 *p = (vp8_prob)vp8_read_literal(bc, 8); 1180 } 1181 if (k > 0 && *p != pc->fc.coef_probs[i][j][k - 1][l]) { 1182 pbi->independent_partitions = 0; 1183 } 1184 } 1185 } 1186 } 1187 } 1188 } 1189 1190 /* clear out the coeff buffer */ 1191 memset(xd->qcoeff, 0, sizeof(xd->qcoeff)); 1192 1193 vp8_decode_mode_mvs(pbi); 1194 1195 #if CONFIG_ERROR_CONCEALMENT 1196 if (pbi->ec_active && 1197 pbi->mvs_corrupt_from_mb < (unsigned int)pc->mb_cols * pc->mb_rows) { 1198 /* Motion vectors are missing in this frame. We will try to estimate 1199 * them and then continue decoding the frame as usual */ 1200 vp8_estimate_missing_mvs(pbi); 1201 } 1202 #endif 1203 1204 memset(pc->above_context, 0, sizeof(ENTROPY_CONTEXT_PLANES) * pc->mb_cols); 1205 pbi->frame_corrupt_residual = 0; 1206 1207 #if CONFIG_MULTITHREAD 1208 if (vpx_atomic_load_acquire(&pbi->b_multithreaded_rd) && 1209 pc->multi_token_partition != ONE_PARTITION) { 1210 unsigned int thread; 1211 vp8mt_decode_mb_rows(pbi, xd); 1212 vp8_yv12_extend_frame_borders(yv12_fb_new); 1213 for (thread = 0; thread < pbi->decoding_thread_count; ++thread) { 1214 corrupt_tokens |= pbi->mb_row_di[thread].mbd.corrupted; 1215 } 1216 } else 1217 #endif 1218 { 1219 decode_mb_rows(pbi); 1220 corrupt_tokens |= xd->corrupted; 1221 } 1222 1223 /* Collect information about decoder corruption. */ 1224 /* 1. Check first boolean decoder for errors. */ 1225 yv12_fb_new->corrupted = vp8dx_bool_error(bc); 1226 /* 2. Check the macroblock information */ 1227 yv12_fb_new->corrupted |= corrupt_tokens; 1228 1229 if (!pbi->decoded_key_frame) { 1230 if (pc->frame_type == KEY_FRAME && !yv12_fb_new->corrupted) { 1231 pbi->decoded_key_frame = 1; 1232 } else { 1233 vpx_internal_error(&pbi->common.error, VPX_CODEC_CORRUPT_FRAME, 1234 "A stream must start with a complete key frame"); 1235 } 1236 } 1237 1238 /* vpx_log("Decoder: Frame Decoded, Size Roughly:%d bytes 1239 * \n",bc->pos+pbi->bc2.pos); */ 1240 1241 if (pc->refresh_entropy_probs == 0) { 1242 memcpy(&pc->fc, &pc->lfc, sizeof(pc->fc)); 1243 pbi->independent_partitions = prev_independent_partitions; 1244 } 1245 1246 #ifdef PACKET_TESTING 1247 { 1248 FILE *f = fopen("decompressor.VP8", "ab"); 1249 unsigned int size = pbi->bc2.pos + pbi->bc.pos + 8; 1250 fwrite((void *)&size, 4, 1, f); 1251 fwrite((void *)pbi->Source, size, 1, f); 1252 fclose(f); 1253 } 1254 #endif 1255 1256 return 0; 1257 } 1258
