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 <assert.h> 12 13#include "vp9/common/vp9_common.h" 14#include "vp9/common/vp9_entropy.h" 15#include "vp9/common/vp9_entropymode.h" 16#include "vp9/common/vp9_entropymv.h" 17#include "vp9/common/vp9_findnearmv.h" 18#include "vp9/common/vp9_mvref_common.h" 19#include "vp9/common/vp9_pred_common.h" 20#include "vp9/common/vp9_reconinter.h" 21#include "vp9/common/vp9_seg_common.h" 22 23#include "vp9/decoder/vp9_decodemv.h" 24#include "vp9/decoder/vp9_decodframe.h" 25#include "vp9/decoder/vp9_onyxd_int.h" 26#include "vp9/decoder/vp9_dsubexp.h" 27#include "vp9/decoder/vp9_treereader.h" 28 29static MB_PREDICTION_MODE read_intra_mode(vp9_reader *r, const vp9_prob *p) { 30 return (MB_PREDICTION_MODE)treed_read(r, vp9_intra_mode_tree, p); 31} 32 33static MB_PREDICTION_MODE read_inter_mode(VP9_COMMON *cm, vp9_reader *r, 34 uint8_t context) { 35 MB_PREDICTION_MODE mode = treed_read(r, vp9_inter_mode_tree, 36 cm->fc.inter_mode_probs[context]); 37 ++cm->counts.inter_mode[context][inter_mode_offset(mode)]; 38 return mode; 39} 40 41static int read_segment_id(vp9_reader *r, const struct segmentation *seg) { 42 return treed_read(r, vp9_segment_tree, seg->tree_probs); 43} 44 45static TX_SIZE read_selected_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd, 46 BLOCK_SIZE bsize, vp9_reader *r) { 47 const uint8_t context = vp9_get_pred_context_tx_size(xd); 48 const vp9_prob *tx_probs = get_tx_probs(bsize, context, &cm->fc.tx_probs); 49 TX_SIZE tx_size = vp9_read(r, tx_probs[0]); 50 if (tx_size != TX_4X4 && bsize >= BLOCK_16X16) { 51 tx_size += vp9_read(r, tx_probs[1]); 52 if (tx_size != TX_8X8 && bsize >= BLOCK_32X32) 53 tx_size += vp9_read(r, tx_probs[2]); 54 } 55 56 update_tx_counts(bsize, context, tx_size, &cm->counts.tx); 57 return tx_size; 58} 59 60static TX_SIZE read_tx_size(VP9D_COMP *pbi, TX_MODE tx_mode, 61 BLOCK_SIZE bsize, int allow_select, 62 vp9_reader *r) { 63 VP9_COMMON *const cm = &pbi->common; 64 MACROBLOCKD *const xd = &pbi->mb; 65 66 if (allow_select && tx_mode == TX_MODE_SELECT && bsize >= BLOCK_8X8) 67 return read_selected_tx_size(cm, xd, bsize, r); 68 else if (tx_mode >= ALLOW_32X32 && bsize >= BLOCK_32X32) 69 return TX_32X32; 70 else if (tx_mode >= ALLOW_16X16 && bsize >= BLOCK_16X16) 71 return TX_16X16; 72 else if (tx_mode >= ALLOW_8X8 && bsize >= BLOCK_8X8) 73 return TX_8X8; 74 else 75 return TX_4X4; 76} 77 78static void set_segment_id(VP9_COMMON *cm, BLOCK_SIZE bsize, 79 int mi_row, int mi_col, int segment_id) { 80 const int mi_offset = mi_row * cm->mi_cols + mi_col; 81 const int bw = 1 << mi_width_log2(bsize); 82 const int bh = 1 << mi_height_log2(bsize); 83 const int xmis = MIN(cm->mi_cols - mi_col, bw); 84 const int ymis = MIN(cm->mi_rows - mi_row, bh); 85 int x, y; 86 87 assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); 88 89 for (y = 0; y < ymis; y++) 90 for (x = 0; x < xmis; x++) 91 cm->last_frame_seg_map[mi_offset + y * cm->mi_cols + x] = segment_id; 92} 93 94static int read_intra_segment_id(VP9D_COMP *pbi, int mi_row, int mi_col, 95 vp9_reader *r) { 96 MACROBLOCKD *const xd = &pbi->mb; 97 struct segmentation *const seg = &pbi->common.seg; 98 const BLOCK_SIZE bsize = xd->this_mi->mbmi.sb_type; 99 int segment_id; 100 101 if (!seg->enabled) 102 return 0; // Default for disabled segmentation 103 104 if (!seg->update_map) 105 return 0; 106 107 segment_id = read_segment_id(r, seg); 108 set_segment_id(&pbi->common, bsize, mi_row, mi_col, segment_id); 109 return segment_id; 110} 111 112static int read_inter_segment_id(VP9D_COMP *pbi, int mi_row, int mi_col, 113 vp9_reader *r) { 114 VP9_COMMON *const cm = &pbi->common; 115 MACROBLOCKD *const xd = &pbi->mb; 116 struct segmentation *const seg = &cm->seg; 117 const BLOCK_SIZE bsize = xd->this_mi->mbmi.sb_type; 118 int pred_segment_id, segment_id; 119 120 if (!seg->enabled) 121 return 0; // Default for disabled segmentation 122 123 pred_segment_id = vp9_get_segment_id(cm, cm->last_frame_seg_map, 124 bsize, mi_row, mi_col); 125 if (!seg->update_map) 126 return pred_segment_id; 127 128 if (seg->temporal_update) { 129 const vp9_prob pred_prob = vp9_get_pred_prob_seg_id(seg, xd); 130 const int pred_flag = vp9_read(r, pred_prob); 131 vp9_set_pred_flag_seg_id(xd, pred_flag); 132 segment_id = pred_flag ? pred_segment_id 133 : read_segment_id(r, seg); 134 } else { 135 segment_id = read_segment_id(r, seg); 136 } 137 set_segment_id(cm, bsize, mi_row, mi_col, segment_id); 138 return segment_id; 139} 140 141static uint8_t read_skip_coeff(VP9D_COMP *pbi, int segment_id, vp9_reader *r) { 142 VP9_COMMON *const cm = &pbi->common; 143 MACROBLOCKD *const xd = &pbi->mb; 144 int skip_coeff = vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP); 145 if (!skip_coeff) { 146 const int ctx = vp9_get_pred_context_mbskip(xd); 147 skip_coeff = vp9_read(r, vp9_get_pred_prob_mbskip(cm, xd)); 148 cm->counts.mbskip[ctx][skip_coeff]++; 149 } 150 return skip_coeff; 151} 152 153static void read_intra_frame_mode_info(VP9D_COMP *pbi, MODE_INFO *m, 154 int mi_row, int mi_col, vp9_reader *r) { 155 VP9_COMMON *const cm = &pbi->common; 156 MACROBLOCKD *const xd = &pbi->mb; 157 MB_MODE_INFO *const mbmi = &m->mbmi; 158 const BLOCK_SIZE bsize = mbmi->sb_type; 159 const MODE_INFO *above_mi = xd->mi_8x8[-cm->mode_info_stride]; 160 const MODE_INFO *left_mi = xd->mi_8x8[-1]; 161 162 mbmi->segment_id = read_intra_segment_id(pbi, mi_row, mi_col, r); 163 mbmi->skip_coeff = read_skip_coeff(pbi, mbmi->segment_id, r); 164 mbmi->tx_size = read_tx_size(pbi, cm->tx_mode, bsize, 1, r); 165 mbmi->ref_frame[0] = INTRA_FRAME; 166 mbmi->ref_frame[1] = NONE; 167 168 if (bsize >= BLOCK_8X8) { 169 const MB_PREDICTION_MODE A = above_block_mode(m, above_mi, 0); 170 const MB_PREDICTION_MODE L = xd->left_available ? 171 left_block_mode(m, left_mi, 0) : DC_PRED; 172 mbmi->mode = read_intra_mode(r, vp9_kf_y_mode_prob[A][L]); 173 } else { 174 // Only 4x4, 4x8, 8x4 blocks 175 const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2 176 const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2 177 int idx, idy; 178 179 for (idy = 0; idy < 2; idy += num_4x4_h) { 180 for (idx = 0; idx < 2; idx += num_4x4_w) { 181 const int ib = idy * 2 + idx; 182 const MB_PREDICTION_MODE A = above_block_mode(m, above_mi, ib); 183 const MB_PREDICTION_MODE L = (xd->left_available || idx) ? 184 left_block_mode(m, left_mi, ib) : DC_PRED; 185 const MB_PREDICTION_MODE b_mode = read_intra_mode(r, 186 vp9_kf_y_mode_prob[A][L]); 187 m->bmi[ib].as_mode = b_mode; 188 if (num_4x4_h == 2) 189 m->bmi[ib + 2].as_mode = b_mode; 190 if (num_4x4_w == 2) 191 m->bmi[ib + 1].as_mode = b_mode; 192 } 193 } 194 195 mbmi->mode = m->bmi[3].as_mode; 196 } 197 198 mbmi->uv_mode = read_intra_mode(r, vp9_kf_uv_mode_prob[mbmi->mode]); 199} 200 201static int read_mv_component(vp9_reader *r, 202 const nmv_component *mvcomp, int usehp) { 203 204 int mag, d, fr, hp; 205 const int sign = vp9_read(r, mvcomp->sign); 206 const int mv_class = treed_read(r, vp9_mv_class_tree, mvcomp->classes); 207 const int class0 = mv_class == MV_CLASS_0; 208 209 // Integer part 210 if (class0) { 211 d = treed_read(r, vp9_mv_class0_tree, mvcomp->class0); 212 } else { 213 int i; 214 const int n = mv_class + CLASS0_BITS - 1; // number of bits 215 216 d = 0; 217 for (i = 0; i < n; ++i) 218 d |= vp9_read(r, mvcomp->bits[i]) << i; 219 } 220 221 // Fractional part 222 fr = treed_read(r, vp9_mv_fp_tree, 223 class0 ? mvcomp->class0_fp[d] : mvcomp->fp); 224 225 226 // High precision part (if hp is not used, the default value of the hp is 1) 227 hp = usehp ? vp9_read(r, class0 ? mvcomp->class0_hp : mvcomp->hp) 228 : 1; 229 230 // Result 231 mag = vp9_get_mv_mag(mv_class, (d << 3) | (fr << 1) | hp) + 1; 232 return sign ? -mag : mag; 233} 234 235static INLINE void read_mv(vp9_reader *r, MV *mv, const MV *ref, 236 const nmv_context *ctx, 237 nmv_context_counts *counts, int allow_hp) { 238 const MV_JOINT_TYPE j = treed_read(r, vp9_mv_joint_tree, ctx->joints); 239 const int use_hp = allow_hp && vp9_use_mv_hp(ref); 240 MV diff = {0, 0}; 241 242 if (mv_joint_vertical(j)) 243 diff.row = read_mv_component(r, &ctx->comps[0], use_hp); 244 245 if (mv_joint_horizontal(j)) 246 diff.col = read_mv_component(r, &ctx->comps[1], use_hp); 247 248 vp9_inc_mv(&diff, counts); 249 250 mv->row = ref->row + diff.row; 251 mv->col = ref->col + diff.col; 252} 253 254static void update_mv(vp9_reader *r, vp9_prob *p) { 255 if (vp9_read(r, NMV_UPDATE_PROB)) 256 *p = (vp9_read_literal(r, 7) << 1) | 1; 257} 258 259static void read_mv_probs(vp9_reader *r, nmv_context *mvc, int allow_hp) { 260 int i, j, k; 261 262 for (j = 0; j < MV_JOINTS - 1; ++j) 263 update_mv(r, &mvc->joints[j]); 264 265 for (i = 0; i < 2; ++i) { 266 nmv_component *const comp = &mvc->comps[i]; 267 268 update_mv(r, &comp->sign); 269 270 for (j = 0; j < MV_CLASSES - 1; ++j) 271 update_mv(r, &comp->classes[j]); 272 273 for (j = 0; j < CLASS0_SIZE - 1; ++j) 274 update_mv(r, &comp->class0[j]); 275 276 for (j = 0; j < MV_OFFSET_BITS; ++j) 277 update_mv(r, &comp->bits[j]); 278 } 279 280 for (i = 0; i < 2; ++i) { 281 nmv_component *const comp = &mvc->comps[i]; 282 283 for (j = 0; j < CLASS0_SIZE; ++j) 284 for (k = 0; k < 3; ++k) 285 update_mv(r, &comp->class0_fp[j][k]); 286 287 for (j = 0; j < 3; ++j) 288 update_mv(r, &comp->fp[j]); 289 } 290 291 if (allow_hp) { 292 for (i = 0; i < 2; ++i) { 293 update_mv(r, &mvc->comps[i].class0_hp); 294 update_mv(r, &mvc->comps[i].hp); 295 } 296 } 297} 298 299// Read the referncence frame 300static void read_ref_frames(VP9D_COMP *pbi, vp9_reader *r, 301 int segment_id, MV_REFERENCE_FRAME ref_frame[2]) { 302 VP9_COMMON *const cm = &pbi->common; 303 MACROBLOCKD *const xd = &pbi->mb; 304 FRAME_CONTEXT *const fc = &cm->fc; 305 FRAME_COUNTS *const counts = &cm->counts; 306 307 if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { 308 ref_frame[0] = vp9_get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME); 309 ref_frame[1] = NONE; 310 } else { 311 const int comp_ctx = vp9_get_pred_context_comp_inter_inter(cm, xd); 312 int is_comp; 313 314 if (cm->comp_pred_mode == HYBRID_PREDICTION) { 315 is_comp = vp9_read(r, fc->comp_inter_prob[comp_ctx]); 316 counts->comp_inter[comp_ctx][is_comp]++; 317 } else { 318 is_comp = cm->comp_pred_mode == COMP_PREDICTION_ONLY; 319 } 320 321 // FIXME(rbultje) I'm pretty sure this breaks segmentation ref frame coding 322 if (is_comp) { 323 const int fix_ref_idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref]; 324 const int ref_ctx = vp9_get_pred_context_comp_ref_p(cm, xd); 325 const int b = vp9_read(r, fc->comp_ref_prob[ref_ctx]); 326 counts->comp_ref[ref_ctx][b]++; 327 ref_frame[fix_ref_idx] = cm->comp_fixed_ref; 328 ref_frame[!fix_ref_idx] = cm->comp_var_ref[b]; 329 } else { 330 const int ctx0 = vp9_get_pred_context_single_ref_p1(xd); 331 const int bit0 = vp9_read(r, fc->single_ref_prob[ctx0][0]); 332 ++counts->single_ref[ctx0][0][bit0]; 333 if (bit0) { 334 const int ctx1 = vp9_get_pred_context_single_ref_p2(xd); 335 const int bit1 = vp9_read(r, fc->single_ref_prob[ctx1][1]); 336 ref_frame[0] = bit1 ? ALTREF_FRAME : GOLDEN_FRAME; 337 ++counts->single_ref[ctx1][1][bit1]; 338 } else { 339 ref_frame[0] = LAST_FRAME; 340 } 341 342 ref_frame[1] = NONE; 343 } 344 } 345} 346 347static void read_switchable_interp_probs(FRAME_CONTEXT *fc, vp9_reader *r) { 348 int i, j; 349 for (j = 0; j < SWITCHABLE_FILTERS + 1; ++j) 350 for (i = 0; i < SWITCHABLE_FILTERS - 1; ++i) 351 if (vp9_read(r, MODE_UPDATE_PROB)) 352 vp9_diff_update_prob(r, &fc->switchable_interp_prob[j][i]); 353} 354 355static void read_inter_mode_probs(FRAME_CONTEXT *fc, vp9_reader *r) { 356 int i, j; 357 for (i = 0; i < INTER_MODE_CONTEXTS; ++i) 358 for (j = 0; j < INTER_MODES - 1; ++j) 359 if (vp9_read(r, MODE_UPDATE_PROB)) 360 vp9_diff_update_prob(r, &fc->inter_mode_probs[i][j]); 361} 362 363static INLINE COMPPREDMODE_TYPE read_comp_pred_mode(vp9_reader *r) { 364 COMPPREDMODE_TYPE mode = vp9_read_bit(r); 365 if (mode) 366 mode += vp9_read_bit(r); 367 return mode; 368} 369 370static INLINE INTERPOLATIONFILTERTYPE read_switchable_filter_type( 371 VP9D_COMP *pbi, vp9_reader *r) { 372 VP9_COMMON *const cm = &pbi->common; 373 MACROBLOCKD *const xd = &pbi->mb; 374 const int ctx = vp9_get_pred_context_switchable_interp(xd); 375 const int type = treed_read(r, vp9_switchable_interp_tree, 376 cm->fc.switchable_interp_prob[ctx]); 377 ++cm->counts.switchable_interp[ctx][type]; 378 return type; 379} 380 381static void read_intra_block_mode_info(VP9D_COMP *pbi, MODE_INFO *mi, 382 vp9_reader *r) { 383 VP9_COMMON *const cm = &pbi->common; 384 MB_MODE_INFO *const mbmi = &mi->mbmi; 385 const BLOCK_SIZE bsize = mi->mbmi.sb_type; 386 387 mbmi->ref_frame[0] = INTRA_FRAME; 388 mbmi->ref_frame[1] = NONE; 389 390 if (bsize >= BLOCK_8X8) { 391 const int size_group = size_group_lookup[bsize]; 392 mbmi->mode = read_intra_mode(r, cm->fc.y_mode_prob[size_group]); 393 cm->counts.y_mode[size_group][mbmi->mode]++; 394 } else { 395 // Only 4x4, 4x8, 8x4 blocks 396 const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2 397 const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2 398 int idx, idy; 399 400 for (idy = 0; idy < 2; idy += num_4x4_h) { 401 for (idx = 0; idx < 2; idx += num_4x4_w) { 402 const int ib = idy * 2 + idx; 403 const int b_mode = read_intra_mode(r, cm->fc.y_mode_prob[0]); 404 mi->bmi[ib].as_mode = b_mode; 405 cm->counts.y_mode[0][b_mode]++; 406 407 if (num_4x4_h == 2) 408 mi->bmi[ib + 2].as_mode = b_mode; 409 if (num_4x4_w == 2) 410 mi->bmi[ib + 1].as_mode = b_mode; 411 } 412 } 413 mbmi->mode = mi->bmi[3].as_mode; 414 } 415 416 mbmi->uv_mode = read_intra_mode(r, cm->fc.uv_mode_prob[mbmi->mode]); 417 cm->counts.uv_mode[mbmi->mode][mbmi->uv_mode]++; 418} 419 420static int read_is_inter_block(VP9D_COMP *pbi, int segment_id, vp9_reader *r) { 421 VP9_COMMON *const cm = &pbi->common; 422 MACROBLOCKD *const xd = &pbi->mb; 423 424 if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { 425 return vp9_get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME) != 426 INTRA_FRAME; 427 } else { 428 const int ctx = vp9_get_pred_context_intra_inter(xd); 429 const int is_inter = vp9_read(r, vp9_get_pred_prob_intra_inter(cm, xd)); 430 ++cm->counts.intra_inter[ctx][is_inter]; 431 return is_inter; 432 } 433} 434 435static void read_inter_block_mode_info(VP9D_COMP *pbi, MODE_INFO *mi, 436 int mi_row, int mi_col, vp9_reader *r) { 437 VP9_COMMON *const cm = &pbi->common; 438 MACROBLOCKD *const xd = &pbi->mb; 439 nmv_context *const nmvc = &cm->fc.nmvc; 440 MB_MODE_INFO *const mbmi = &mi->mbmi; 441 int_mv *const mv0 = &mbmi->mv[0]; 442 int_mv *const mv1 = &mbmi->mv[1]; 443 const BLOCK_SIZE bsize = mbmi->sb_type; 444 const int allow_hp = xd->allow_high_precision_mv; 445 446 int_mv nearest, nearby, best_mv; 447 int_mv nearest_second, nearby_second, best_mv_second; 448 uint8_t inter_mode_ctx; 449 MV_REFERENCE_FRAME ref0; 450 int is_compound; 451 452 mbmi->uv_mode = DC_PRED; 453 read_ref_frames(pbi, r, mbmi->segment_id, mbmi->ref_frame); 454 ref0 = mbmi->ref_frame[0]; 455 is_compound = has_second_ref(mbmi); 456 457 vp9_find_mv_refs(cm, xd, mi, xd->last_mi, ref0, mbmi->ref_mvs[ref0], 458 mi_row, mi_col); 459 460 inter_mode_ctx = mbmi->mode_context[ref0]; 461 462 if (vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { 463 mbmi->mode = ZEROMV; 464 assert(bsize >= BLOCK_8X8); 465 } else { 466 if (bsize >= BLOCK_8X8) 467 mbmi->mode = read_inter_mode(cm, r, inter_mode_ctx); 468 } 469 470 // nearest, nearby 471 if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) { 472 vp9_find_best_ref_mvs(xd, mbmi->ref_mvs[ref0], &nearest, &nearby); 473 best_mv.as_int = mbmi->ref_mvs[ref0][0].as_int; 474 } 475 476 if (is_compound) { 477 const MV_REFERENCE_FRAME ref1 = mbmi->ref_frame[1]; 478 vp9_find_mv_refs(cm, xd, mi, xd->last_mi, 479 ref1, mbmi->ref_mvs[ref1], mi_row, mi_col); 480 481 if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) { 482 vp9_find_best_ref_mvs(xd, mbmi->ref_mvs[ref1], 483 &nearest_second, &nearby_second); 484 best_mv_second.as_int = mbmi->ref_mvs[ref1][0].as_int; 485 } 486 } 487 488 mbmi->interp_filter = cm->mcomp_filter_type == SWITCHABLE 489 ? read_switchable_filter_type(pbi, r) 490 : cm->mcomp_filter_type; 491 492 if (bsize < BLOCK_8X8) { 493 const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2 494 const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2 495 int idx, idy; 496 for (idy = 0; idy < 2; idy += num_4x4_h) { 497 for (idx = 0; idx < 2; idx += num_4x4_w) { 498 int_mv blockmv, secondmv; 499 const int j = idy * 2 + idx; 500 const int b_mode = read_inter_mode(cm, r, inter_mode_ctx); 501 502 if (b_mode == NEARESTMV || b_mode == NEARMV) { 503 vp9_append_sub8x8_mvs_for_idx(cm, xd, &nearest, &nearby, j, 0, 504 mi_row, mi_col); 505 506 if (is_compound) 507 vp9_append_sub8x8_mvs_for_idx(cm, xd, &nearest_second, 508 &nearby_second, j, 1, 509 mi_row, mi_col); 510 } 511 512 switch (b_mode) { 513 case NEWMV: 514 read_mv(r, &blockmv.as_mv, &best_mv.as_mv, nmvc, 515 &cm->counts.mv, allow_hp); 516 517 if (is_compound) 518 read_mv(r, &secondmv.as_mv, &best_mv_second.as_mv, nmvc, 519 &cm->counts.mv, allow_hp); 520 break; 521 case NEARESTMV: 522 blockmv.as_int = nearest.as_int; 523 if (is_compound) 524 secondmv.as_int = nearest_second.as_int; 525 break; 526 case NEARMV: 527 blockmv.as_int = nearby.as_int; 528 if (is_compound) 529 secondmv.as_int = nearby_second.as_int; 530 break; 531 case ZEROMV: 532 blockmv.as_int = 0; 533 if (is_compound) 534 secondmv.as_int = 0; 535 break; 536 default: 537 assert(!"Invalid inter mode value"); 538 } 539 mi->bmi[j].as_mv[0].as_int = blockmv.as_int; 540 if (is_compound) 541 mi->bmi[j].as_mv[1].as_int = secondmv.as_int; 542 543 if (num_4x4_h == 2) 544 mi->bmi[j + 2] = mi->bmi[j]; 545 if (num_4x4_w == 2) 546 mi->bmi[j + 1] = mi->bmi[j]; 547 mi->mbmi.mode = b_mode; 548 } 549 } 550 551 mv0->as_int = mi->bmi[3].as_mv[0].as_int; 552 mv1->as_int = mi->bmi[3].as_mv[1].as_int; 553 } else { 554 switch (mbmi->mode) { 555 case NEARMV: 556 mv0->as_int = nearby.as_int; 557 if (is_compound) 558 mv1->as_int = nearby_second.as_int; 559 break; 560 561 case NEARESTMV: 562 mv0->as_int = nearest.as_int; 563 if (is_compound) 564 mv1->as_int = nearest_second.as_int; 565 break; 566 567 case ZEROMV: 568 mv0->as_int = 0; 569 if (is_compound) 570 mv1->as_int = 0; 571 break; 572 573 case NEWMV: 574 read_mv(r, &mv0->as_mv, &best_mv.as_mv, nmvc, &cm->counts.mv, allow_hp); 575 if (is_compound) 576 read_mv(r, &mv1->as_mv, &best_mv_second.as_mv, nmvc, &cm->counts.mv, 577 allow_hp); 578 break; 579 default: 580 assert(!"Invalid inter mode value"); 581 } 582 } 583} 584 585static void read_inter_frame_mode_info(VP9D_COMP *pbi, MODE_INFO *mi, 586 int mi_row, int mi_col, vp9_reader *r) { 587 VP9_COMMON *const cm = &pbi->common; 588 MB_MODE_INFO *const mbmi = &mi->mbmi; 589 int inter_block; 590 591 mbmi->mv[0].as_int = 0; 592 mbmi->mv[1].as_int = 0; 593 mbmi->segment_id = read_inter_segment_id(pbi, mi_row, mi_col, r); 594 mbmi->skip_coeff = read_skip_coeff(pbi, mbmi->segment_id, r); 595 inter_block = read_is_inter_block(pbi, mbmi->segment_id, r); 596 mbmi->tx_size = read_tx_size(pbi, cm->tx_mode, mbmi->sb_type, 597 !mbmi->skip_coeff || !inter_block, r); 598 599 if (inter_block) 600 read_inter_block_mode_info(pbi, mi, mi_row, mi_col, r); 601 else 602 read_intra_block_mode_info(pbi, mi, r); 603} 604 605static void read_comp_pred(VP9_COMMON *cm, vp9_reader *r) { 606 int i; 607 608 cm->comp_pred_mode = cm->allow_comp_inter_inter ? read_comp_pred_mode(r) 609 : SINGLE_PREDICTION_ONLY; 610 611 if (cm->comp_pred_mode == HYBRID_PREDICTION) 612 for (i = 0; i < COMP_INTER_CONTEXTS; i++) 613 if (vp9_read(r, MODE_UPDATE_PROB)) 614 vp9_diff_update_prob(r, &cm->fc.comp_inter_prob[i]); 615 616 if (cm->comp_pred_mode != COMP_PREDICTION_ONLY) 617 for (i = 0; i < REF_CONTEXTS; i++) { 618 if (vp9_read(r, MODE_UPDATE_PROB)) 619 vp9_diff_update_prob(r, &cm->fc.single_ref_prob[i][0]); 620 if (vp9_read(r, MODE_UPDATE_PROB)) 621 vp9_diff_update_prob(r, &cm->fc.single_ref_prob[i][1]); 622 } 623 624 if (cm->comp_pred_mode != SINGLE_PREDICTION_ONLY) 625 for (i = 0; i < REF_CONTEXTS; i++) 626 if (vp9_read(r, MODE_UPDATE_PROB)) 627 vp9_diff_update_prob(r, &cm->fc.comp_ref_prob[i]); 628} 629 630void vp9_prepare_read_mode_info(VP9D_COMP* pbi, vp9_reader *r) { 631 VP9_COMMON *const cm = &pbi->common; 632 int k; 633 634 // TODO(jkoleszar): does this clear more than MBSKIP_CONTEXTS? Maybe remove. 635 // vpx_memset(cm->fc.mbskip_probs, 0, sizeof(cm->fc.mbskip_probs)); 636 for (k = 0; k < MBSKIP_CONTEXTS; ++k) 637 if (vp9_read(r, MODE_UPDATE_PROB)) 638 vp9_diff_update_prob(r, &cm->fc.mbskip_probs[k]); 639 640 if (cm->frame_type != KEY_FRAME && !cm->intra_only) { 641 nmv_context *const nmvc = &pbi->common.fc.nmvc; 642 MACROBLOCKD *const xd = &pbi->mb; 643 int i, j; 644 645 read_inter_mode_probs(&cm->fc, r); 646 647 if (cm->mcomp_filter_type == SWITCHABLE) 648 read_switchable_interp_probs(&cm->fc, r); 649 650 for (i = 0; i < INTRA_INTER_CONTEXTS; i++) 651 if (vp9_read(r, MODE_UPDATE_PROB)) 652 vp9_diff_update_prob(r, &cm->fc.intra_inter_prob[i]); 653 654 read_comp_pred(cm, r); 655 656 for (j = 0; j < BLOCK_SIZE_GROUPS; j++) 657 for (i = 0; i < INTRA_MODES - 1; ++i) 658 if (vp9_read(r, MODE_UPDATE_PROB)) 659 vp9_diff_update_prob(r, &cm->fc.y_mode_prob[j][i]); 660 661 for (j = 0; j < NUM_PARTITION_CONTEXTS; ++j) 662 for (i = 0; i < PARTITION_TYPES - 1; ++i) 663 if (vp9_read(r, MODE_UPDATE_PROB)) 664 vp9_diff_update_prob(r, &cm->fc.partition_prob[INTER_FRAME][j][i]); 665 666 read_mv_probs(r, nmvc, xd->allow_high_precision_mv); 667 } 668} 669 670void vp9_read_mode_info(VP9D_COMP* pbi, int mi_row, int mi_col, vp9_reader *r) { 671 VP9_COMMON *const cm = &pbi->common; 672 MACROBLOCKD *const xd = &pbi->mb; 673 MODE_INFO *mi = xd->this_mi; 674 const BLOCK_SIZE bsize = mi->mbmi.sb_type; 675 const int bw = 1 << mi_width_log2(bsize); 676 const int bh = 1 << mi_height_log2(bsize); 677 const int y_mis = MIN(bh, cm->mi_rows - mi_row); 678 const int x_mis = MIN(bw, cm->mi_cols - mi_col); 679 int x, y, z; 680 681 if (cm->frame_type == KEY_FRAME || cm->intra_only) 682 read_intra_frame_mode_info(pbi, mi, mi_row, mi_col, r); 683 else 684 read_inter_frame_mode_info(pbi, mi, mi_row, mi_col, r); 685 686 for (y = 0, z = 0; y < y_mis; y++, z += cm->mode_info_stride) 687 for (x = !y; x < x_mis; x++) { 688 xd->mi_8x8[z + x] = mi; 689 } 690} 691