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_mvref_common.h" 18#include "vp9/common/vp9_pred_common.h" 19#include "vp9/common/vp9_reconinter.h" 20#include "vp9/common/vp9_seg_common.h" 21 22#include "vp9/decoder/vp9_decodemv.h" 23#include "vp9/decoder/vp9_decodeframe.h" 24#include "vp9/decoder/vp9_reader.h" 25 26static PREDICTION_MODE read_intra_mode(vp9_reader *r, const vp9_prob *p) { 27 return (PREDICTION_MODE)vp9_read_tree(r, vp9_intra_mode_tree, p); 28} 29 30static PREDICTION_MODE read_intra_mode_y(VP9_COMMON *cm, vp9_reader *r, 31 int size_group) { 32 const PREDICTION_MODE y_mode = 33 read_intra_mode(r, cm->fc.y_mode_prob[size_group]); 34 if (!cm->frame_parallel_decoding_mode) 35 ++cm->counts.y_mode[size_group][y_mode]; 36 return y_mode; 37} 38 39static PREDICTION_MODE read_intra_mode_uv(VP9_COMMON *cm, vp9_reader *r, 40 PREDICTION_MODE y_mode) { 41 const PREDICTION_MODE uv_mode = read_intra_mode(r, 42 cm->fc.uv_mode_prob[y_mode]); 43 if (!cm->frame_parallel_decoding_mode) 44 ++cm->counts.uv_mode[y_mode][uv_mode]; 45 return uv_mode; 46} 47 48static PREDICTION_MODE read_inter_mode(VP9_COMMON *cm, vp9_reader *r, int ctx) { 49 const int mode = vp9_read_tree(r, vp9_inter_mode_tree, 50 cm->fc.inter_mode_probs[ctx]); 51 if (!cm->frame_parallel_decoding_mode) 52 ++cm->counts.inter_mode[ctx][mode]; 53 54 return NEARESTMV + mode; 55} 56 57static int read_segment_id(vp9_reader *r, const struct segmentation *seg) { 58 return vp9_read_tree(r, vp9_segment_tree, seg->tree_probs); 59} 60 61static TX_SIZE read_selected_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd, 62 TX_SIZE max_tx_size, vp9_reader *r) { 63 const int ctx = vp9_get_tx_size_context(xd); 64 const vp9_prob *tx_probs = get_tx_probs(max_tx_size, ctx, &cm->fc.tx_probs); 65 int tx_size = vp9_read(r, tx_probs[0]); 66 if (tx_size != TX_4X4 && max_tx_size >= TX_16X16) { 67 tx_size += vp9_read(r, tx_probs[1]); 68 if (tx_size != TX_8X8 && max_tx_size >= TX_32X32) 69 tx_size += vp9_read(r, tx_probs[2]); 70 } 71 72 if (!cm->frame_parallel_decoding_mode) 73 ++get_tx_counts(max_tx_size, ctx, &cm->counts.tx)[tx_size]; 74 return (TX_SIZE)tx_size; 75} 76 77static TX_SIZE read_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd, TX_MODE tx_mode, 78 BLOCK_SIZE bsize, int allow_select, vp9_reader *r) { 79 const TX_SIZE max_tx_size = max_txsize_lookup[bsize]; 80 if (allow_select && tx_mode == TX_MODE_SELECT && bsize >= BLOCK_8X8) 81 return read_selected_tx_size(cm, xd, max_tx_size, r); 82 else 83 return MIN(max_tx_size, tx_mode_to_biggest_tx_size[tx_mode]); 84} 85 86static void set_segment_id(VP9_COMMON *cm, BLOCK_SIZE bsize, 87 int mi_row, int mi_col, int segment_id) { 88 const int mi_offset = mi_row * cm->mi_cols + mi_col; 89 const int bw = num_8x8_blocks_wide_lookup[bsize]; 90 const int bh = num_8x8_blocks_high_lookup[bsize]; 91 const int xmis = MIN(cm->mi_cols - mi_col, bw); 92 const int ymis = MIN(cm->mi_rows - mi_row, bh); 93 int x, y; 94 95 assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); 96 97 for (y = 0; y < ymis; y++) 98 for (x = 0; x < xmis; x++) 99 cm->last_frame_seg_map[mi_offset + y * cm->mi_cols + x] = segment_id; 100} 101 102static int read_intra_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd, 103 int mi_row, int mi_col, 104 vp9_reader *r) { 105 struct segmentation *const seg = &cm->seg; 106 const BLOCK_SIZE bsize = xd->mi[0].src_mi->mbmi.sb_type; 107 int segment_id; 108 109 if (!seg->enabled) 110 return 0; // Default for disabled segmentation 111 112 if (!seg->update_map) 113 return 0; 114 115 segment_id = read_segment_id(r, seg); 116 set_segment_id(cm, bsize, mi_row, mi_col, segment_id); 117 return segment_id; 118} 119 120static int read_inter_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd, 121 int mi_row, int mi_col, vp9_reader *r) { 122 struct segmentation *const seg = &cm->seg; 123 MB_MODE_INFO *const mbmi = &xd->mi[0].src_mi->mbmi; 124 const BLOCK_SIZE bsize = mbmi->sb_type; 125 int predicted_segment_id, segment_id; 126 127 if (!seg->enabled) 128 return 0; // Default for disabled segmentation 129 130 predicted_segment_id = vp9_get_segment_id(cm, cm->last_frame_seg_map, 131 bsize, mi_row, mi_col); 132 if (!seg->update_map) 133 return predicted_segment_id; 134 135 if (seg->temporal_update) { 136 const vp9_prob pred_prob = vp9_get_pred_prob_seg_id(seg, xd); 137 mbmi->seg_id_predicted = vp9_read(r, pred_prob); 138 segment_id = mbmi->seg_id_predicted ? predicted_segment_id 139 : read_segment_id(r, seg); 140 } else { 141 segment_id = read_segment_id(r, seg); 142 } 143 set_segment_id(cm, bsize, mi_row, mi_col, segment_id); 144 return segment_id; 145} 146 147static int read_skip(VP9_COMMON *cm, const MACROBLOCKD *xd, 148 int segment_id, vp9_reader *r) { 149 if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { 150 return 1; 151 } else { 152 const int ctx = vp9_get_skip_context(xd); 153 const int skip = vp9_read(r, cm->fc.skip_probs[ctx]); 154 if (!cm->frame_parallel_decoding_mode) 155 ++cm->counts.skip[ctx][skip]; 156 return skip; 157 } 158} 159 160static void read_intra_frame_mode_info(VP9_COMMON *const cm, 161 MACROBLOCKD *const xd, 162 int mi_row, int mi_col, vp9_reader *r) { 163 MODE_INFO *const mi = xd->mi[0].src_mi; 164 MB_MODE_INFO *const mbmi = &mi->mbmi; 165 const MODE_INFO *above_mi = xd->mi[-cm->mi_stride].src_mi; 166 const MODE_INFO *left_mi = xd->left_available ? xd->mi[-1].src_mi : NULL; 167 const BLOCK_SIZE bsize = mbmi->sb_type; 168 int i; 169 170 mbmi->segment_id = read_intra_segment_id(cm, xd, mi_row, mi_col, r); 171 mbmi->skip = read_skip(cm, xd, mbmi->segment_id, r); 172 mbmi->tx_size = read_tx_size(cm, xd, cm->tx_mode, bsize, 1, r); 173 mbmi->ref_frame[0] = INTRA_FRAME; 174 mbmi->ref_frame[1] = NONE; 175 176 switch (bsize) { 177 case BLOCK_4X4: 178 for (i = 0; i < 4; ++i) 179 mi->bmi[i].as_mode = 180 read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, i)); 181 mbmi->mode = mi->bmi[3].as_mode; 182 break; 183 case BLOCK_4X8: 184 mi->bmi[0].as_mode = mi->bmi[2].as_mode = 185 read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 0)); 186 mi->bmi[1].as_mode = mi->bmi[3].as_mode = mbmi->mode = 187 read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 1)); 188 break; 189 case BLOCK_8X4: 190 mi->bmi[0].as_mode = mi->bmi[1].as_mode = 191 read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 0)); 192 mi->bmi[2].as_mode = mi->bmi[3].as_mode = mbmi->mode = 193 read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 2)); 194 break; 195 default: 196 mbmi->mode = read_intra_mode(r, 197 get_y_mode_probs(mi, above_mi, left_mi, 0)); 198 } 199 200 mbmi->uv_mode = read_intra_mode(r, vp9_kf_uv_mode_prob[mbmi->mode]); 201} 202 203static int read_mv_component(vp9_reader *r, 204 const nmv_component *mvcomp, int usehp) { 205 int mag, d, fr, hp; 206 const int sign = vp9_read(r, mvcomp->sign); 207 const int mv_class = vp9_read_tree(r, vp9_mv_class_tree, mvcomp->classes); 208 const int class0 = mv_class == MV_CLASS_0; 209 210 // Integer part 211 if (class0) { 212 d = vp9_read_tree(r, vp9_mv_class0_tree, mvcomp->class0); 213 } else { 214 int i; 215 const int n = mv_class + CLASS0_BITS - 1; // number of bits 216 217 d = 0; 218 for (i = 0; i < n; ++i) 219 d |= vp9_read(r, mvcomp->bits[i]) << i; 220 } 221 222 // Fractional part 223 fr = vp9_read_tree(r, vp9_mv_fp_tree, class0 ? mvcomp->class0_fp[d] 224 : mvcomp->fp); 225 226 227 // High precision part (if hp is not used, the default value of the hp is 1) 228 hp = usehp ? vp9_read(r, class0 ? mvcomp->class0_hp : mvcomp->hp) 229 : 1; 230 231 // Result 232 mag = vp9_get_mv_mag(mv_class, (d << 3) | (fr << 1) | hp) + 1; 233 return sign ? -mag : mag; 234} 235 236static INLINE void read_mv(vp9_reader *r, MV *mv, const MV *ref, 237 const nmv_context *ctx, 238 nmv_context_counts *counts, int allow_hp) { 239 const MV_JOINT_TYPE joint_type = 240 (MV_JOINT_TYPE)vp9_read_tree(r, vp9_mv_joint_tree, ctx->joints); 241 const int use_hp = allow_hp && vp9_use_mv_hp(ref); 242 MV diff = {0, 0}; 243 244 if (mv_joint_vertical(joint_type)) 245 diff.row = read_mv_component(r, &ctx->comps[0], use_hp); 246 247 if (mv_joint_horizontal(joint_type)) 248 diff.col = read_mv_component(r, &ctx->comps[1], use_hp); 249 250 vp9_inc_mv(&diff, counts); 251 252 mv->row = ref->row + diff.row; 253 mv->col = ref->col + diff.col; 254} 255 256static REFERENCE_MODE read_block_reference_mode(VP9_COMMON *cm, 257 const MACROBLOCKD *xd, 258 vp9_reader *r) { 259 if (cm->reference_mode == REFERENCE_MODE_SELECT) { 260 const int ctx = vp9_get_reference_mode_context(cm, xd); 261 const REFERENCE_MODE mode = 262 (REFERENCE_MODE)vp9_read(r, cm->fc.comp_inter_prob[ctx]); 263 if (!cm->frame_parallel_decoding_mode) 264 ++cm->counts.comp_inter[ctx][mode]; 265 return mode; // SINGLE_REFERENCE or COMPOUND_REFERENCE 266 } else { 267 return cm->reference_mode; 268 } 269} 270 271// Read the referncence frame 272static void read_ref_frames(VP9_COMMON *const cm, MACROBLOCKD *const xd, 273 vp9_reader *r, 274 int segment_id, MV_REFERENCE_FRAME ref_frame[2]) { 275 FRAME_CONTEXT *const fc = &cm->fc; 276 FRAME_COUNTS *const counts = &cm->counts; 277 278 if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { 279 ref_frame[0] = (MV_REFERENCE_FRAME)vp9_get_segdata(&cm->seg, segment_id, 280 SEG_LVL_REF_FRAME); 281 ref_frame[1] = NONE; 282 } else { 283 const REFERENCE_MODE mode = read_block_reference_mode(cm, xd, r); 284 // FIXME(rbultje) I'm pretty sure this breaks segmentation ref frame coding 285 if (mode == COMPOUND_REFERENCE) { 286 const int idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref]; 287 const int ctx = vp9_get_pred_context_comp_ref_p(cm, xd); 288 const int bit = vp9_read(r, fc->comp_ref_prob[ctx]); 289 if (!cm->frame_parallel_decoding_mode) 290 ++counts->comp_ref[ctx][bit]; 291 ref_frame[idx] = cm->comp_fixed_ref; 292 ref_frame[!idx] = cm->comp_var_ref[bit]; 293 } else if (mode == SINGLE_REFERENCE) { 294 const int ctx0 = vp9_get_pred_context_single_ref_p1(xd); 295 const int bit0 = vp9_read(r, fc->single_ref_prob[ctx0][0]); 296 if (!cm->frame_parallel_decoding_mode) 297 ++counts->single_ref[ctx0][0][bit0]; 298 if (bit0) { 299 const int ctx1 = vp9_get_pred_context_single_ref_p2(xd); 300 const int bit1 = vp9_read(r, fc->single_ref_prob[ctx1][1]); 301 if (!cm->frame_parallel_decoding_mode) 302 ++counts->single_ref[ctx1][1][bit1]; 303 ref_frame[0] = bit1 ? ALTREF_FRAME : GOLDEN_FRAME; 304 } else { 305 ref_frame[0] = LAST_FRAME; 306 } 307 308 ref_frame[1] = NONE; 309 } else { 310 assert(0 && "Invalid prediction mode."); 311 } 312 } 313} 314 315 316static INLINE INTERP_FILTER read_switchable_interp_filter( 317 VP9_COMMON *const cm, MACROBLOCKD *const xd, vp9_reader *r) { 318 const int ctx = vp9_get_pred_context_switchable_interp(xd); 319 const INTERP_FILTER type = 320 (INTERP_FILTER)vp9_read_tree(r, vp9_switchable_interp_tree, 321 cm->fc.switchable_interp_prob[ctx]); 322 if (!cm->frame_parallel_decoding_mode) 323 ++cm->counts.switchable_interp[ctx][type]; 324 return type; 325} 326 327static void read_intra_block_mode_info(VP9_COMMON *const cm, MODE_INFO *mi, 328 vp9_reader *r) { 329 MB_MODE_INFO *const mbmi = &mi->mbmi; 330 const BLOCK_SIZE bsize = mi->mbmi.sb_type; 331 int i; 332 333 mbmi->ref_frame[0] = INTRA_FRAME; 334 mbmi->ref_frame[1] = NONE; 335 336 switch (bsize) { 337 case BLOCK_4X4: 338 for (i = 0; i < 4; ++i) 339 mi->bmi[i].as_mode = read_intra_mode_y(cm, r, 0); 340 mbmi->mode = mi->bmi[3].as_mode; 341 break; 342 case BLOCK_4X8: 343 mi->bmi[0].as_mode = mi->bmi[2].as_mode = read_intra_mode_y(cm, r, 0); 344 mi->bmi[1].as_mode = mi->bmi[3].as_mode = mbmi->mode = 345 read_intra_mode_y(cm, r, 0); 346 break; 347 case BLOCK_8X4: 348 mi->bmi[0].as_mode = mi->bmi[1].as_mode = read_intra_mode_y(cm, r, 0); 349 mi->bmi[2].as_mode = mi->bmi[3].as_mode = mbmi->mode = 350 read_intra_mode_y(cm, r, 0); 351 break; 352 default: 353 mbmi->mode = read_intra_mode_y(cm, r, size_group_lookup[bsize]); 354 } 355 356 mbmi->uv_mode = read_intra_mode_uv(cm, r, mbmi->mode); 357} 358 359static INLINE int is_mv_valid(const MV *mv) { 360 return mv->row > MV_LOW && mv->row < MV_UPP && 361 mv->col > MV_LOW && mv->col < MV_UPP; 362} 363 364static INLINE int assign_mv(VP9_COMMON *cm, PREDICTION_MODE mode, 365 int_mv mv[2], int_mv ref_mv[2], 366 int_mv nearest_mv[2], int_mv near_mv[2], 367 int is_compound, int allow_hp, vp9_reader *r) { 368 int i; 369 int ret = 1; 370 371 switch (mode) { 372 case NEWMV: { 373 nmv_context_counts *const mv_counts = cm->frame_parallel_decoding_mode ? 374 NULL : &cm->counts.mv; 375 for (i = 0; i < 1 + is_compound; ++i) { 376 read_mv(r, &mv[i].as_mv, &ref_mv[i].as_mv, &cm->fc.nmvc, mv_counts, 377 allow_hp); 378 ret = ret && is_mv_valid(&mv[i].as_mv); 379 } 380 break; 381 } 382 case NEARESTMV: { 383 mv[0].as_int = nearest_mv[0].as_int; 384 if (is_compound) 385 mv[1].as_int = nearest_mv[1].as_int; 386 break; 387 } 388 case NEARMV: { 389 mv[0].as_int = near_mv[0].as_int; 390 if (is_compound) 391 mv[1].as_int = near_mv[1].as_int; 392 break; 393 } 394 case ZEROMV: { 395 mv[0].as_int = 0; 396 if (is_compound) 397 mv[1].as_int = 0; 398 break; 399 } 400 default: { 401 return 0; 402 } 403 } 404 return ret; 405} 406 407static int read_is_inter_block(VP9_COMMON *const cm, MACROBLOCKD *const xd, 408 int segment_id, vp9_reader *r) { 409 if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { 410 return vp9_get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME) != 411 INTRA_FRAME; 412 } else { 413 const int ctx = vp9_get_intra_inter_context(xd); 414 const int is_inter = vp9_read(r, cm->fc.intra_inter_prob[ctx]); 415 if (!cm->frame_parallel_decoding_mode) 416 ++cm->counts.intra_inter[ctx][is_inter]; 417 return is_inter; 418 } 419} 420 421static void read_inter_block_mode_info(VP9_COMMON *const cm, 422 MACROBLOCKD *const xd, 423 const TileInfo *const tile, 424 MODE_INFO *const mi, 425 int mi_row, int mi_col, vp9_reader *r) { 426 MB_MODE_INFO *const mbmi = &mi->mbmi; 427 const BLOCK_SIZE bsize = mbmi->sb_type; 428 const int allow_hp = cm->allow_high_precision_mv; 429 430 int_mv nearestmv[2], nearmv[2]; 431 int inter_mode_ctx, ref, is_compound; 432 433 read_ref_frames(cm, xd, r, mbmi->segment_id, mbmi->ref_frame); 434 is_compound = has_second_ref(mbmi); 435 436 for (ref = 0; ref < 1 + is_compound; ++ref) { 437 const MV_REFERENCE_FRAME frame = mbmi->ref_frame[ref]; 438 const int ref_idx = frame - LAST_FRAME; 439 if (cm->frame_refs[ref_idx].sf.x_scale_fp == REF_INVALID_SCALE || 440 cm->frame_refs[ref_idx].sf.y_scale_fp == REF_INVALID_SCALE ) 441 vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, 442 "Reference frame has invalid dimensions"); 443 vp9_find_mv_refs(cm, xd, tile, mi, frame, mbmi->ref_mvs[frame], 444 mi_row, mi_col); 445 } 446 447 inter_mode_ctx = mbmi->mode_context[mbmi->ref_frame[0]]; 448 449 if (vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { 450 mbmi->mode = ZEROMV; 451 if (bsize < BLOCK_8X8) { 452 vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, 453 "Invalid usage of segement feature on small blocks"); 454 return; 455 } 456 } else { 457 if (bsize >= BLOCK_8X8) 458 mbmi->mode = read_inter_mode(cm, r, inter_mode_ctx); 459 } 460 461 if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) { 462 for (ref = 0; ref < 1 + is_compound; ++ref) { 463 vp9_find_best_ref_mvs(xd, allow_hp, mbmi->ref_mvs[mbmi->ref_frame[ref]], 464 &nearestmv[ref], &nearmv[ref]); 465 } 466 } 467 468 mbmi->interp_filter = (cm->interp_filter == SWITCHABLE) 469 ? read_switchable_interp_filter(cm, xd, r) 470 : cm->interp_filter; 471 472 if (bsize < BLOCK_8X8) { 473 const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2 474 const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2 475 int idx, idy; 476 PREDICTION_MODE b_mode; 477 int_mv nearest_sub8x8[2], near_sub8x8[2]; 478 for (idy = 0; idy < 2; idy += num_4x4_h) { 479 for (idx = 0; idx < 2; idx += num_4x4_w) { 480 int_mv block[2]; 481 const int j = idy * 2 + idx; 482 b_mode = read_inter_mode(cm, r, inter_mode_ctx); 483 484 if (b_mode == NEARESTMV || b_mode == NEARMV) 485 for (ref = 0; ref < 1 + is_compound; ++ref) 486 vp9_append_sub8x8_mvs_for_idx(cm, xd, tile, j, ref, mi_row, mi_col, 487 &nearest_sub8x8[ref], 488 &near_sub8x8[ref]); 489 490 if (!assign_mv(cm, b_mode, block, nearestmv, 491 nearest_sub8x8, near_sub8x8, 492 is_compound, allow_hp, r)) { 493 xd->corrupted |= 1; 494 break; 495 }; 496 497 mi->bmi[j].as_mv[0].as_int = block[0].as_int; 498 if (is_compound) 499 mi->bmi[j].as_mv[1].as_int = block[1].as_int; 500 501 if (num_4x4_h == 2) 502 mi->bmi[j + 2] = mi->bmi[j]; 503 if (num_4x4_w == 2) 504 mi->bmi[j + 1] = mi->bmi[j]; 505 } 506 } 507 508 mi->mbmi.mode = b_mode; 509 510 mbmi->mv[0].as_int = mi->bmi[3].as_mv[0].as_int; 511 mbmi->mv[1].as_int = mi->bmi[3].as_mv[1].as_int; 512 } else { 513 xd->corrupted |= !assign_mv(cm, mbmi->mode, mbmi->mv, nearestmv, 514 nearestmv, nearmv, is_compound, allow_hp, r); 515 } 516} 517 518static void read_inter_frame_mode_info(VP9_COMMON *const cm, 519 MACROBLOCKD *const xd, 520 const TileInfo *const tile, 521 int mi_row, int mi_col, vp9_reader *r) { 522 MODE_INFO *const mi = xd->mi[0].src_mi; 523 MB_MODE_INFO *const mbmi = &mi->mbmi; 524 int inter_block; 525 526 mbmi->mv[0].as_int = 0; 527 mbmi->mv[1].as_int = 0; 528 mbmi->segment_id = read_inter_segment_id(cm, xd, mi_row, mi_col, r); 529 mbmi->skip = read_skip(cm, xd, mbmi->segment_id, r); 530 inter_block = read_is_inter_block(cm, xd, mbmi->segment_id, r); 531 mbmi->tx_size = read_tx_size(cm, xd, cm->tx_mode, mbmi->sb_type, 532 !mbmi->skip || !inter_block, r); 533 534 if (inter_block) 535 read_inter_block_mode_info(cm, xd, tile, mi, mi_row, mi_col, r); 536 else 537 read_intra_block_mode_info(cm, mi, r); 538} 539 540void vp9_read_mode_info(VP9_COMMON *cm, MACROBLOCKD *xd, 541 const TileInfo *const tile, 542 int mi_row, int mi_col, vp9_reader *r) { 543 if (frame_is_intra_only(cm)) 544 read_intra_frame_mode_info(cm, xd, mi_row, mi_col, r); 545 else 546 read_inter_frame_mode_info(cm, xd, tile, mi_row, mi_col, r); 547} 548