vp9_decodemv.c revision 9b35249446b07f40ac5fcc3205f2c048616efacc
1ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang/* 2ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang * 4ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang * Use of this source code is governed by a BSD-style license 5ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang * that can be found in the LICENSE file in the root of the source 6ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang * tree. An additional intellectual property rights grant can be found 7ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang * in the file PATENTS. All contributing project authors may 8ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang * be found in the AUTHORS file in the root of the source tree. 9ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang */ 10ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 1191037db265ecdd914a26e056cf69207b4f50924ehkuang#include <assert.h> 12ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 1391037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/common/vp9_common.h" 1491037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/common/vp9_entropy.h" 15ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang#include "vp9/common/vp9_entropymode.h" 1691037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/common/vp9_entropymv.h" 17ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang#include "vp9/common/vp9_findnearmv.h" 1891037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/common/vp9_mvref_common.h" 19ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang#include "vp9/common/vp9_pred_common.h" 2091037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/common/vp9_reconinter.h" 2191037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/common/vp9_seg_common.h" 2291037db265ecdd914a26e056cf69207b4f50924ehkuang 23ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang#include "vp9/decoder/vp9_decodemv.h" 24ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang#include "vp9/decoder/vp9_decodframe.h" 2591037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/decoder/vp9_onyxd_int.h" 2691037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/decoder/vp9_treereader.h" 2791037db265ecdd914a26e056cf69207b4f50924ehkuang 2891037db265ecdd914a26e056cf69207b4f50924ehkuangstatic MB_PREDICTION_MODE read_intra_mode(vp9_reader *r, const vp9_prob *p) { 2991037db265ecdd914a26e056cf69207b4f50924ehkuang return (MB_PREDICTION_MODE)treed_read(r, vp9_intra_mode_tree, p); 3091037db265ecdd914a26e056cf69207b4f50924ehkuang} 31ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 325ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic MB_PREDICTION_MODE read_intra_mode_y(VP9_COMMON *cm, vp9_reader *r, 335ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int size_group) { 345ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const MB_PREDICTION_MODE y_mode = read_intra_mode(r, 355ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang cm->fc.y_mode_prob[size_group]); 365ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 375ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++cm->counts.y_mode[size_group][y_mode]; 385ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return y_mode; 395ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang} 405ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang 415ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic MB_PREDICTION_MODE read_intra_mode_uv(VP9_COMMON *cm, vp9_reader *r, 425ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MB_PREDICTION_MODE y_mode) { 435ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const MB_PREDICTION_MODE uv_mode = read_intra_mode(r, 445ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang cm->fc.uv_mode_prob[y_mode]); 455ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 465ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++cm->counts.uv_mode[y_mode][uv_mode]; 475ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return uv_mode; 485ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang} 495ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang 50f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuangstatic MB_PREDICTION_MODE read_inter_mode(VP9_COMMON *cm, vp9_reader *r, 519b35249446b07f40ac5fcc3205f2c048616efacchkuang int ctx) { 529b35249446b07f40ac5fcc3205f2c048616efacchkuang const int mode = treed_read(r, vp9_inter_mode_tree, 539b35249446b07f40ac5fcc3205f2c048616efacchkuang cm->fc.inter_mode_probs[ctx]); 545ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 559b35249446b07f40ac5fcc3205f2c048616efacchkuang ++cm->counts.inter_mode[ctx][mode]; 569b35249446b07f40ac5fcc3205f2c048616efacchkuang 579b35249446b07f40ac5fcc3205f2c048616efacchkuang return NEARESTMV + mode; 5891037db265ecdd914a26e056cf69207b4f50924ehkuang} 59ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 6091037db265ecdd914a26e056cf69207b4f50924ehkuangstatic int read_segment_id(vp9_reader *r, const struct segmentation *seg) { 6191037db265ecdd914a26e056cf69207b4f50924ehkuang return treed_read(r, vp9_segment_tree, seg->tree_probs); 6291037db265ecdd914a26e056cf69207b4f50924ehkuang} 63ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 6491037db265ecdd914a26e056cf69207b4f50924ehkuangstatic TX_SIZE read_selected_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd, 659b35249446b07f40ac5fcc3205f2c048616efacchkuang TX_SIZE max_tx_size, vp9_reader *r) { 669b35249446b07f40ac5fcc3205f2c048616efacchkuang const int ctx = vp9_get_pred_context_tx_size(xd); 679b35249446b07f40ac5fcc3205f2c048616efacchkuang const vp9_prob *tx_probs = get_tx_probs(max_tx_size, ctx, &cm->fc.tx_probs); 6891037db265ecdd914a26e056cf69207b4f50924ehkuang TX_SIZE tx_size = vp9_read(r, tx_probs[0]); 699b35249446b07f40ac5fcc3205f2c048616efacchkuang if (tx_size != TX_4X4 && max_tx_size >= TX_16X16) { 7091037db265ecdd914a26e056cf69207b4f50924ehkuang tx_size += vp9_read(r, tx_probs[1]); 719b35249446b07f40ac5fcc3205f2c048616efacchkuang if (tx_size != TX_8X8 && max_tx_size >= TX_32X32) 7291037db265ecdd914a26e056cf69207b4f50924ehkuang tx_size += vp9_read(r, tx_probs[2]); 7391037db265ecdd914a26e056cf69207b4f50924ehkuang } 7491037db265ecdd914a26e056cf69207b4f50924ehkuang 755ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 769b35249446b07f40ac5fcc3205f2c048616efacchkuang ++get_tx_counts(max_tx_size, ctx, &cm->counts.tx)[tx_size]; 7791037db265ecdd914a26e056cf69207b4f50924ehkuang return tx_size; 78ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 79ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 809b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic TX_SIZE read_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd, TX_MODE tx_mode, 819b35249446b07f40ac5fcc3205f2c048616efacchkuang BLOCK_SIZE bsize, int allow_select, vp9_reader *r) { 829b35249446b07f40ac5fcc3205f2c048616efacchkuang const TX_SIZE max_tx_size = max_txsize_lookup[bsize]; 839b35249446b07f40ac5fcc3205f2c048616efacchkuang if (allow_select && tx_mode == TX_MODE_SELECT && bsize >= BLOCK_8X8) 849b35249446b07f40ac5fcc3205f2c048616efacchkuang return read_selected_tx_size(cm, xd, max_tx_size, r); 859b35249446b07f40ac5fcc3205f2c048616efacchkuang else 869b35249446b07f40ac5fcc3205f2c048616efacchkuang return MIN(max_tx_size, tx_mode_to_biggest_tx_size[tx_mode]); 87ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 88ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 891184aebb761cbeac9124c37189a80a1a58f04b6bhkuangstatic void set_segment_id(VP9_COMMON *cm, BLOCK_SIZE bsize, 90ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang int mi_row, int mi_col, int segment_id) { 9191037db265ecdd914a26e056cf69207b4f50924ehkuang const int mi_offset = mi_row * cm->mi_cols + mi_col; 925ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const int bw = num_8x8_blocks_wide_lookup[bsize]; 935ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const int bh = num_8x8_blocks_high_lookup[bsize]; 94ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang const int xmis = MIN(cm->mi_cols - mi_col, bw); 9591037db265ecdd914a26e056cf69207b4f50924ehkuang const int ymis = MIN(cm->mi_rows - mi_row, bh); 96ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang int x, y; 97ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 9891037db265ecdd914a26e056cf69207b4f50924ehkuang assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); 99ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 10091037db265ecdd914a26e056cf69207b4f50924ehkuang for (y = 0; y < ymis; y++) 10191037db265ecdd914a26e056cf69207b4f50924ehkuang for (x = 0; x < xmis; x++) 10291037db265ecdd914a26e056cf69207b4f50924ehkuang cm->last_frame_seg_map[mi_offset + y * cm->mi_cols + x] = segment_id; 103ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 104ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 1055ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic int read_intra_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd, 1065ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int mi_row, int mi_col, 10791037db265ecdd914a26e056cf69207b4f50924ehkuang vp9_reader *r) { 1085ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang struct segmentation *const seg = &cm->seg; 1095ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const BLOCK_SIZE bsize = xd->mi_8x8[0]->mbmi.sb_type; 11091037db265ecdd914a26e056cf69207b4f50924ehkuang int segment_id; 11191037db265ecdd914a26e056cf69207b4f50924ehkuang 11291037db265ecdd914a26e056cf69207b4f50924ehkuang if (!seg->enabled) 11391037db265ecdd914a26e056cf69207b4f50924ehkuang return 0; // Default for disabled segmentation 11491037db265ecdd914a26e056cf69207b4f50924ehkuang 11591037db265ecdd914a26e056cf69207b4f50924ehkuang if (!seg->update_map) 11691037db265ecdd914a26e056cf69207b4f50924ehkuang return 0; 117ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 11891037db265ecdd914a26e056cf69207b4f50924ehkuang segment_id = read_segment_id(r, seg); 1195ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang set_segment_id(cm, bsize, mi_row, mi_col, segment_id); 12091037db265ecdd914a26e056cf69207b4f50924ehkuang return segment_id; 12191037db265ecdd914a26e056cf69207b4f50924ehkuang} 12291037db265ecdd914a26e056cf69207b4f50924ehkuang 1235ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic int read_inter_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd, 1245ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int mi_row, int mi_col, vp9_reader *r) { 1251184aebb761cbeac9124c37189a80a1a58f04b6bhkuang struct segmentation *const seg = &cm->seg; 1265ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const BLOCK_SIZE bsize = xd->mi_8x8[0]->mbmi.sb_type; 12791037db265ecdd914a26e056cf69207b4f50924ehkuang int pred_segment_id, segment_id; 128ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 12991037db265ecdd914a26e056cf69207b4f50924ehkuang if (!seg->enabled) 13091037db265ecdd914a26e056cf69207b4f50924ehkuang return 0; // Default for disabled segmentation 131ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 13291037db265ecdd914a26e056cf69207b4f50924ehkuang pred_segment_id = vp9_get_segment_id(cm, cm->last_frame_seg_map, 13391037db265ecdd914a26e056cf69207b4f50924ehkuang bsize, mi_row, mi_col); 13491037db265ecdd914a26e056cf69207b4f50924ehkuang if (!seg->update_map) 13591037db265ecdd914a26e056cf69207b4f50924ehkuang return pred_segment_id; 13691037db265ecdd914a26e056cf69207b4f50924ehkuang 13791037db265ecdd914a26e056cf69207b4f50924ehkuang if (seg->temporal_update) { 1381184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const vp9_prob pred_prob = vp9_get_pred_prob_seg_id(seg, xd); 13991037db265ecdd914a26e056cf69207b4f50924ehkuang const int pred_flag = vp9_read(r, pred_prob); 1401184aebb761cbeac9124c37189a80a1a58f04b6bhkuang vp9_set_pred_flag_seg_id(xd, pred_flag); 14191037db265ecdd914a26e056cf69207b4f50924ehkuang segment_id = pred_flag ? pred_segment_id 14291037db265ecdd914a26e056cf69207b4f50924ehkuang : read_segment_id(r, seg); 14391037db265ecdd914a26e056cf69207b4f50924ehkuang } else { 14491037db265ecdd914a26e056cf69207b4f50924ehkuang segment_id = read_segment_id(r, seg); 145ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 14691037db265ecdd914a26e056cf69207b4f50924ehkuang set_segment_id(cm, bsize, mi_row, mi_col, segment_id); 14791037db265ecdd914a26e056cf69207b4f50924ehkuang return segment_id; 14891037db265ecdd914a26e056cf69207b4f50924ehkuang} 149ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 1505ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic int read_skip_coeff(VP9_COMMON *cm, const MACROBLOCKD *xd, 1515ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int segment_id, vp9_reader *r) { 1525ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { 1535ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return 1; 1545ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } else { 15591037db265ecdd914a26e056cf69207b4f50924ehkuang const int ctx = vp9_get_pred_context_mbskip(xd); 1565ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const int skip = vp9_read(r, cm->fc.mbskip_probs[ctx]); 1575ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 1585ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++cm->counts.mbskip[ctx][skip]; 1595ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return skip; 160ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 16191037db265ecdd914a26e056cf69207b4f50924ehkuang} 162ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 1635ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic void read_intra_frame_mode_info(VP9_COMMON *const cm, 1645ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MACROBLOCKD *const xd, 1655ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MODE_INFO *const m, 166f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int mi_row, int mi_col, vp9_reader *r) { 16791037db265ecdd914a26e056cf69207b4f50924ehkuang MB_MODE_INFO *const mbmi = &m->mbmi; 1681184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const BLOCK_SIZE bsize = mbmi->sb_type; 1691184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const MODE_INFO *above_mi = xd->mi_8x8[-cm->mode_info_stride]; 1705ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const MODE_INFO *left_mi = xd->left_available ? xd->mi_8x8[-1] : NULL; 17191037db265ecdd914a26e056cf69207b4f50924ehkuang 1725ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->segment_id = read_intra_segment_id(cm, xd, mi_row, mi_col, r); 1735ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->skip_coeff = read_skip_coeff(cm, xd, mbmi->segment_id, r); 1745ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->tx_size = read_tx_size(cm, xd, cm->tx_mode, bsize, 1, r); 17591037db265ecdd914a26e056cf69207b4f50924ehkuang mbmi->ref_frame[0] = INTRA_FRAME; 176f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->ref_frame[1] = NONE; 17791037db265ecdd914a26e056cf69207b4f50924ehkuang 1781184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (bsize >= BLOCK_8X8) { 1791184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const MB_PREDICTION_MODE A = above_block_mode(m, above_mi, 0); 1805ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const MB_PREDICTION_MODE L = left_block_mode(m, left_mi, 0); 18191037db265ecdd914a26e056cf69207b4f50924ehkuang mbmi->mode = read_intra_mode(r, vp9_kf_y_mode_prob[A][L]); 182ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } else { 18391037db265ecdd914a26e056cf69207b4f50924ehkuang // Only 4x4, 4x8, 8x4 blocks 184f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2 185f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2 186ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang int idx, idy; 187ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 188f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang for (idy = 0; idy < 2; idy += num_4x4_h) { 189f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang for (idx = 0; idx < 2; idx += num_4x4_w) { 19091037db265ecdd914a26e056cf69207b4f50924ehkuang const int ib = idy * 2 + idx; 1911184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const MB_PREDICTION_MODE A = above_block_mode(m, above_mi, ib); 1925ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const MB_PREDICTION_MODE L = left_block_mode(m, left_mi, ib); 19391037db265ecdd914a26e056cf69207b4f50924ehkuang const MB_PREDICTION_MODE b_mode = read_intra_mode(r, 19491037db265ecdd914a26e056cf69207b4f50924ehkuang vp9_kf_y_mode_prob[A][L]); 19591037db265ecdd914a26e056cf69207b4f50924ehkuang m->bmi[ib].as_mode = b_mode; 196f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (num_4x4_h == 2) 19791037db265ecdd914a26e056cf69207b4f50924ehkuang m->bmi[ib + 2].as_mode = b_mode; 198f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (num_4x4_w == 2) 19991037db265ecdd914a26e056cf69207b4f50924ehkuang m->bmi[ib + 1].as_mode = b_mode; 200ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 201ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 20291037db265ecdd914a26e056cf69207b4f50924ehkuang 20391037db265ecdd914a26e056cf69207b4f50924ehkuang mbmi->mode = m->bmi[3].as_mode; 204ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 205ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 20691037db265ecdd914a26e056cf69207b4f50924ehkuang mbmi->uv_mode = read_intra_mode(r, vp9_kf_uv_mode_prob[mbmi->mode]); 207ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 208ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 209ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuangstatic int read_mv_component(vp9_reader *r, 210ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang const nmv_component *mvcomp, int usehp) { 211ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang int mag, d, fr, hp; 212ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang const int sign = vp9_read(r, mvcomp->sign); 213ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang const int mv_class = treed_read(r, vp9_mv_class_tree, mvcomp->classes); 21491037db265ecdd914a26e056cf69207b4f50924ehkuang const int class0 = mv_class == MV_CLASS_0; 215ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 216ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // Integer part 21791037db265ecdd914a26e056cf69207b4f50924ehkuang if (class0) { 218ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang d = treed_read(r, vp9_mv_class0_tree, mvcomp->class0); 219ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } else { 220ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang int i; 221ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang const int n = mv_class + CLASS0_BITS - 1; // number of bits 222ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 223ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang d = 0; 224ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang for (i = 0; i < n; ++i) 225ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang d |= vp9_read(r, mvcomp->bits[i]) << i; 226ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 227ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 228ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // Fractional part 229ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang fr = treed_read(r, vp9_mv_fp_tree, 23091037db265ecdd914a26e056cf69207b4f50924ehkuang class0 ? mvcomp->class0_fp[d] : mvcomp->fp); 231ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 232ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 233ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // High precision part (if hp is not used, the default value of the hp is 1) 23491037db265ecdd914a26e056cf69207b4f50924ehkuang hp = usehp ? vp9_read(r, class0 ? mvcomp->class0_hp : mvcomp->hp) 235ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang : 1; 236ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 23791037db265ecdd914a26e056cf69207b4f50924ehkuang // Result 238ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang mag = vp9_get_mv_mag(mv_class, (d << 3) | (fr << 1) | hp) + 1; 239ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang return sign ? -mag : mag; 240ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 241ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 24291037db265ecdd914a26e056cf69207b4f50924ehkuangstatic INLINE void read_mv(vp9_reader *r, MV *mv, const MV *ref, 24391037db265ecdd914a26e056cf69207b4f50924ehkuang const nmv_context *ctx, 244f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang nmv_context_counts *counts, int allow_hp) { 24591037db265ecdd914a26e056cf69207b4f50924ehkuang const MV_JOINT_TYPE j = treed_read(r, vp9_mv_joint_tree, ctx->joints); 246f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int use_hp = allow_hp && vp9_use_mv_hp(ref); 24791037db265ecdd914a26e056cf69207b4f50924ehkuang MV diff = {0, 0}; 24891037db265ecdd914a26e056cf69207b4f50924ehkuang 24991037db265ecdd914a26e056cf69207b4f50924ehkuang if (mv_joint_vertical(j)) 250f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang diff.row = read_mv_component(r, &ctx->comps[0], use_hp); 25191037db265ecdd914a26e056cf69207b4f50924ehkuang 25291037db265ecdd914a26e056cf69207b4f50924ehkuang if (mv_joint_horizontal(j)) 253f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang diff.col = read_mv_component(r, &ctx->comps[1], use_hp); 25491037db265ecdd914a26e056cf69207b4f50924ehkuang 25591037db265ecdd914a26e056cf69207b4f50924ehkuang vp9_inc_mv(&diff, counts); 25691037db265ecdd914a26e056cf69207b4f50924ehkuang 25791037db265ecdd914a26e056cf69207b4f50924ehkuang mv->row = ref->row + diff.row; 25891037db265ecdd914a26e056cf69207b4f50924ehkuang mv->col = ref->col + diff.col; 25991037db265ecdd914a26e056cf69207b4f50924ehkuang} 26091037db265ecdd914a26e056cf69207b4f50924ehkuang 2619b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic COMPPREDMODE_TYPE read_reference_mode(VP9_COMMON *cm, 2629b35249446b07f40ac5fcc3205f2c048616efacchkuang const MACROBLOCKD *xd, 2639b35249446b07f40ac5fcc3205f2c048616efacchkuang vp9_reader *r) { 2649b35249446b07f40ac5fcc3205f2c048616efacchkuang const int ctx = vp9_get_pred_context_comp_inter_inter(cm, xd); 2659b35249446b07f40ac5fcc3205f2c048616efacchkuang const int mode = vp9_read(r, cm->fc.comp_inter_prob[ctx]); 2669b35249446b07f40ac5fcc3205f2c048616efacchkuang if (!cm->frame_parallel_decoding_mode) 2679b35249446b07f40ac5fcc3205f2c048616efacchkuang ++cm->counts.comp_inter[ctx][mode]; 2689b35249446b07f40ac5fcc3205f2c048616efacchkuang return mode; // SINGLE_PREDICTION_ONLY or COMP_PREDICTION_ONLY 2699b35249446b07f40ac5fcc3205f2c048616efacchkuang} 2709b35249446b07f40ac5fcc3205f2c048616efacchkuang 271ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang// Read the referncence frame 2725ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic void read_ref_frames(VP9_COMMON *const cm, MACROBLOCKD *const xd, 2735ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vp9_reader *r, 274f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int segment_id, MV_REFERENCE_FRAME ref_frame[2]) { 27591037db265ecdd914a26e056cf69207b4f50924ehkuang FRAME_CONTEXT *const fc = &cm->fc; 27691037db265ecdd914a26e056cf69207b4f50924ehkuang FRAME_COUNTS *const counts = &cm->counts; 277ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 2781184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { 2791184aebb761cbeac9124c37189a80a1a58f04b6bhkuang ref_frame[0] = vp9_get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME); 28091037db265ecdd914a26e056cf69207b4f50924ehkuang ref_frame[1] = NONE; 28191037db265ecdd914a26e056cf69207b4f50924ehkuang } else { 2829b35249446b07f40ac5fcc3205f2c048616efacchkuang const COMPPREDMODE_TYPE mode = (cm->comp_pred_mode == HYBRID_PREDICTION) 2839b35249446b07f40ac5fcc3205f2c048616efacchkuang ? read_reference_mode(cm, xd, r) 2849b35249446b07f40ac5fcc3205f2c048616efacchkuang : cm->comp_pred_mode; 285ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 286ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // FIXME(rbultje) I'm pretty sure this breaks segmentation ref frame coding 2879b35249446b07f40ac5fcc3205f2c048616efacchkuang if (mode == COMP_PREDICTION_ONLY) { 2889b35249446b07f40ac5fcc3205f2c048616efacchkuang const int idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref]; 2899b35249446b07f40ac5fcc3205f2c048616efacchkuang const int ctx = vp9_get_pred_context_comp_ref_p(cm, xd); 2909b35249446b07f40ac5fcc3205f2c048616efacchkuang const int bit = vp9_read(r, fc->comp_ref_prob[ctx]); 2915ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 2929b35249446b07f40ac5fcc3205f2c048616efacchkuang ++counts->comp_ref[ctx][bit]; 2939b35249446b07f40ac5fcc3205f2c048616efacchkuang ref_frame[idx] = cm->comp_fixed_ref; 2949b35249446b07f40ac5fcc3205f2c048616efacchkuang ref_frame[!idx] = cm->comp_var_ref[bit]; 2959b35249446b07f40ac5fcc3205f2c048616efacchkuang } else if (mode == SINGLE_PREDICTION_ONLY) { 296f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int ctx0 = vp9_get_pred_context_single_ref_p1(xd); 297f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int bit0 = vp9_read(r, fc->single_ref_prob[ctx0][0]); 2985ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 2995ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++counts->single_ref[ctx0][0][bit0]; 300f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (bit0) { 301f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int ctx1 = vp9_get_pred_context_single_ref_p2(xd); 302f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int bit1 = vp9_read(r, fc->single_ref_prob[ctx1][1]); 3035ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 3045ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++counts->single_ref[ctx1][1][bit1]; 3059b35249446b07f40ac5fcc3205f2c048616efacchkuang ref_frame[0] = bit1 ? ALTREF_FRAME : GOLDEN_FRAME; 306ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } else { 307ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang ref_frame[0] = LAST_FRAME; 308ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 309f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 310f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang ref_frame[1] = NONE; 3119b35249446b07f40ac5fcc3205f2c048616efacchkuang } else { 3129b35249446b07f40ac5fcc3205f2c048616efacchkuang assert(!"Invalid prediction mode."); 313ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 314ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 315ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 316ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 317ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 3185ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic INLINE INTERPOLATION_TYPE read_switchable_filter_type( 3195ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang VP9_COMMON *const cm, MACROBLOCKD *const xd, vp9_reader *r) { 32091037db265ecdd914a26e056cf69207b4f50924ehkuang const int ctx = vp9_get_pred_context_switchable_interp(xd); 3211184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const int type = treed_read(r, vp9_switchable_interp_tree, 3221184aebb761cbeac9124c37189a80a1a58f04b6bhkuang cm->fc.switchable_interp_prob[ctx]); 3235ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 3245ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++cm->counts.switchable_interp[ctx][type]; 3251184aebb761cbeac9124c37189a80a1a58f04b6bhkuang return type; 32691037db265ecdd914a26e056cf69207b4f50924ehkuang} 327ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 3285ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic void read_intra_block_mode_info(VP9_COMMON *const cm, MODE_INFO *mi, 3295ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vp9_reader *r) { 33091037db265ecdd914a26e056cf69207b4f50924ehkuang MB_MODE_INFO *const mbmi = &mi->mbmi; 3311184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const BLOCK_SIZE bsize = mi->mbmi.sb_type; 332f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 333f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->ref_frame[0] = INTRA_FRAME; 334f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->ref_frame[1] = NONE; 335ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 3361184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (bsize >= BLOCK_8X8) { 3375ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->mode = read_intra_mode_y(cm, r, size_group_lookup[bsize]); 33891037db265ecdd914a26e056cf69207b4f50924ehkuang } else { 33991037db265ecdd914a26e056cf69207b4f50924ehkuang // Only 4x4, 4x8, 8x4 blocks 340f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2 341f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2 34291037db265ecdd914a26e056cf69207b4f50924ehkuang int idx, idy; 34391037db265ecdd914a26e056cf69207b4f50924ehkuang 344f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang for (idy = 0; idy < 2; idy += num_4x4_h) { 345f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang for (idx = 0; idx < 2; idx += num_4x4_w) { 34691037db265ecdd914a26e056cf69207b4f50924ehkuang const int ib = idy * 2 + idx; 3475ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const int b_mode = read_intra_mode_y(cm, r, 0); 34891037db265ecdd914a26e056cf69207b4f50924ehkuang mi->bmi[ib].as_mode = b_mode; 349f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (num_4x4_h == 2) 35091037db265ecdd914a26e056cf69207b4f50924ehkuang mi->bmi[ib + 2].as_mode = b_mode; 351f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (num_4x4_w == 2) 35291037db265ecdd914a26e056cf69207b4f50924ehkuang mi->bmi[ib + 1].as_mode = b_mode; 35391037db265ecdd914a26e056cf69207b4f50924ehkuang } 35491037db265ecdd914a26e056cf69207b4f50924ehkuang } 35591037db265ecdd914a26e056cf69207b4f50924ehkuang mbmi->mode = mi->bmi[3].as_mode; 35691037db265ecdd914a26e056cf69207b4f50924ehkuang } 357ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 3585ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->uv_mode = read_intra_mode_uv(cm, r, mbmi->mode); 359ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 360ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 3615ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic INLINE int assign_mv(VP9_COMMON *cm, MB_PREDICTION_MODE mode, 3625ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int_mv mv[2], int_mv best_mv[2], 3635ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int_mv nearest_mv[2], int_mv near_mv[2], 3645ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int is_compound, int allow_hp, vp9_reader *r) { 3655ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int i; 3665ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int ret = 1; 3675ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang 3685ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang switch (mode) { 3695ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang case NEWMV: { 3705ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang nmv_context_counts *const mv_counts = cm->frame_parallel_decoding_mode ? 3715ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang NULL : &cm->counts.mv; 3725ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang read_mv(r, &mv[0].as_mv, &best_mv[0].as_mv, 3735ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang &cm->fc.nmvc, mv_counts, allow_hp); 3745ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (is_compound) 3755ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang read_mv(r, &mv[1].as_mv, &best_mv[1].as_mv, 3765ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang &cm->fc.nmvc, mv_counts, allow_hp); 3775ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang for (i = 0; i < 1 + is_compound; ++i) { 3785ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ret = ret && mv[i].as_mv.row < MV_UPP && mv[i].as_mv.row > MV_LOW; 3795ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ret = ret && mv[i].as_mv.col < MV_UPP && mv[i].as_mv.col > MV_LOW; 3805ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 3815ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang break; 3825ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 3835ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang case NEARESTMV: { 3845ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mv[0].as_int = nearest_mv[0].as_int; 3855ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (is_compound) mv[1].as_int = nearest_mv[1].as_int; 3865ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang break; 3875ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 3885ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang case NEARMV: { 3895ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mv[0].as_int = near_mv[0].as_int; 3905ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (is_compound) mv[1].as_int = near_mv[1].as_int; 3915ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang break; 3925ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 3935ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang case ZEROMV: { 3945ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mv[0].as_int = 0; 3955ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (is_compound) mv[1].as_int = 0; 3965ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang break; 3975ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 3985ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang default: { 3995ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return 0; 4005ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 4015ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 4025ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return ret; 4035ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang} 40491037db265ecdd914a26e056cf69207b4f50924ehkuang 4055ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic int read_is_inter_block(VP9_COMMON *const cm, MACROBLOCKD *const xd, 4065ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int segment_id, vp9_reader *r) { 4071184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { 4081184aebb761cbeac9124c37189a80a1a58f04b6bhkuang return vp9_get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME) != 409f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang INTRA_FRAME; 41091037db265ecdd914a26e056cf69207b4f50924ehkuang } else { 411f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int ctx = vp9_get_pred_context_intra_inter(xd); 412f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int is_inter = vp9_read(r, vp9_get_pred_prob_intra_inter(cm, xd)); 4135ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 4145ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++cm->counts.intra_inter[ctx][is_inter]; 415f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang return is_inter; 41691037db265ecdd914a26e056cf69207b4f50924ehkuang } 417ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 418ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4195ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic void read_inter_block_mode_info(VP9_COMMON *const cm, 4205ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MACROBLOCKD *const xd, 4215ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const TileInfo *const tile, 4225ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MODE_INFO *const mi, 423f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int mi_row, int mi_col, vp9_reader *r) { 42491037db265ecdd914a26e056cf69207b4f50924ehkuang MB_MODE_INFO *const mbmi = &mi->mbmi; 4251184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const BLOCK_SIZE bsize = mbmi->sb_type; 4265ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const int allow_hp = cm->allow_high_precision_mv; 427ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4285ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int_mv nearest[2], nearmv[2], best[2]; 429f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang uint8_t inter_mode_ctx; 4301184aebb761cbeac9124c37189a80a1a58f04b6bhkuang MV_REFERENCE_FRAME ref0; 4311184aebb761cbeac9124c37189a80a1a58f04b6bhkuang int is_compound; 432ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4331184aebb761cbeac9124c37189a80a1a58f04b6bhkuang mbmi->uv_mode = DC_PRED; 4345ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang read_ref_frames(cm, xd, r, mbmi->segment_id, mbmi->ref_frame); 435f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang ref0 = mbmi->ref_frame[0]; 4361184aebb761cbeac9124c37189a80a1a58f04b6bhkuang is_compound = has_second_ref(mbmi); 437ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4385ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vp9_find_mv_refs(cm, xd, tile, mi, xd->last_mi, ref0, mbmi->ref_mvs[ref0], 439f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mi_row, mi_col); 440ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4411184aebb761cbeac9124c37189a80a1a58f04b6bhkuang inter_mode_ctx = mbmi->mode_context[ref0]; 442ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4431184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { 444f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->mode = ZEROMV; 4455ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (bsize < BLOCK_8X8) { 4465ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, 4475ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang "Invalid usage of segement feature on small blocks"); 4485ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return; 4495ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 4501184aebb761cbeac9124c37189a80a1a58f04b6bhkuang } else { 4511184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (bsize >= BLOCK_8X8) 4521184aebb761cbeac9124c37189a80a1a58f04b6bhkuang mbmi->mode = read_inter_mode(cm, r, inter_mode_ctx); 4531184aebb761cbeac9124c37189a80a1a58f04b6bhkuang } 454ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 455f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang // nearest, nearby 4561184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) { 4575ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vp9_find_best_ref_mvs(xd, allow_hp, 4585ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->ref_mvs[ref0], &nearest[0], &nearmv[0]); 4595ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang best[0].as_int = nearest[0].as_int; 460f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang } 461ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4621184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (is_compound) { 4631184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const MV_REFERENCE_FRAME ref1 = mbmi->ref_frame[1]; 4645ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vp9_find_mv_refs(cm, xd, tile, mi, xd->last_mi, 4651184aebb761cbeac9124c37189a80a1a58f04b6bhkuang ref1, mbmi->ref_mvs[ref1], mi_row, mi_col); 466ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4671184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) { 4685ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vp9_find_best_ref_mvs(xd, allow_hp, 4695ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->ref_mvs[ref1], &nearest[1], &nearmv[1]); 4705ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang best[1].as_int = nearest[1].as_int; 471ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 472f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang } 473ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4745ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->interp_filter = (cm->mcomp_filter_type == SWITCHABLE) 4755ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ? read_switchable_filter_type(cm, xd, r) 4765ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang : cm->mcomp_filter_type; 4771184aebb761cbeac9124c37189a80a1a58f04b6bhkuang 4781184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (bsize < BLOCK_8X8) { 479f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2 480f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2 481f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int idx, idy; 4825ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int b_mode; 483f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang for (idy = 0; idy < 2; idy += num_4x4_h) { 484f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang for (idx = 0; idx < 2; idx += num_4x4_w) { 4855ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int_mv block[2]; 486f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int j = idy * 2 + idx; 4875ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang b_mode = read_inter_mode(cm, r, inter_mode_ctx); 48891037db265ecdd914a26e056cf69207b4f50924ehkuang 489f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (b_mode == NEARESTMV || b_mode == NEARMV) { 4905ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vp9_append_sub8x8_mvs_for_idx(cm, xd, tile, &nearest[0], 4915ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang &nearmv[0], j, 0, 492f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mi_row, mi_col); 493ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4941184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (is_compound) 4955ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vp9_append_sub8x8_mvs_for_idx(cm, xd, tile, &nearest[1], 4965ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang &nearmv[1], j, 1, 4975ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mi_row, mi_col); 498ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 499ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 5005ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!assign_mv(cm, b_mode, block, best, nearest, nearmv, 5015ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang is_compound, allow_hp, r)) { 5025ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang xd->corrupted |= 1; 5035ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang break; 5045ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang }; 5055ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang 5065ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang 5075ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mi->bmi[j].as_mv[0].as_int = block[0].as_int; 5081184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (is_compound) 5095ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mi->bmi[j].as_mv[1].as_int = block[1].as_int; 510f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 511f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (num_4x4_h == 2) 512f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mi->bmi[j + 2] = mi->bmi[j]; 513f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (num_4x4_w == 2) 514f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mi->bmi[j + 1] = mi->bmi[j]; 515ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 516ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 517f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 5185ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mi->mbmi.mode = b_mode; 519f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 5205ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->mv[0].as_int = mi->bmi[3].as_mv[0].as_int; 5215ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->mv[1].as_int = mi->bmi[3].as_mv[1].as_int; 5225ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } else { 5235ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang xd->corrupted |= !assign_mv(cm, mbmi->mode, mbmi->mv, 5245ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang best, nearest, nearmv, 5255ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang is_compound, allow_hp, r); 52691037db265ecdd914a26e056cf69207b4f50924ehkuang } 52791037db265ecdd914a26e056cf69207b4f50924ehkuang} 52891037db265ecdd914a26e056cf69207b4f50924ehkuang 5295ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic void read_inter_frame_mode_info(VP9_COMMON *const cm, 5305ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MACROBLOCKD *const xd, 5315ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const TileInfo *const tile, 5325ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MODE_INFO *const mi, 533f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int mi_row, int mi_col, vp9_reader *r) { 534f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang MB_MODE_INFO *const mbmi = &mi->mbmi; 535f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int inter_block; 536f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 537f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->mv[0].as_int = 0; 538f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->mv[1].as_int = 0; 5395ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->segment_id = read_inter_segment_id(cm, xd, mi_row, mi_col, r); 5405ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->skip_coeff = read_skip_coeff(cm, xd, mbmi->segment_id, r); 5415ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang inter_block = read_is_inter_block(cm, xd, mbmi->segment_id, r); 5425ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->tx_size = read_tx_size(cm, xd, cm->tx_mode, mbmi->sb_type, 5431184aebb761cbeac9124c37189a80a1a58f04b6bhkuang !mbmi->skip_coeff || !inter_block, r); 544f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 545f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (inter_block) 5465ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang read_inter_block_mode_info(cm, xd, tile, mi, mi_row, mi_col, r); 547f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang else 5485ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang read_intra_block_mode_info(cm, mi, r); 549f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang} 550f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 5515ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangvoid vp9_read_mode_info(VP9_COMMON *cm, MACROBLOCKD *xd, 5525ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const TileInfo *const tile, 5535ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int mi_row, int mi_col, vp9_reader *r) { 5545ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MODE_INFO *const mi = xd->mi_8x8[0]; 5551184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const BLOCK_SIZE bsize = mi->mbmi.sb_type; 5565ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const int bw = num_8x8_blocks_wide_lookup[bsize]; 5575ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const int bh = num_8x8_blocks_high_lookup[bsize]; 55891037db265ecdd914a26e056cf69207b4f50924ehkuang const int y_mis = MIN(bh, cm->mi_rows - mi_row); 55991037db265ecdd914a26e056cf69207b4f50924ehkuang const int x_mis = MIN(bw, cm->mi_cols - mi_col); 5601184aebb761cbeac9124c37189a80a1a58f04b6bhkuang int x, y, z; 561ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 5625ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (frame_is_intra_only(cm)) 5635ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang read_intra_frame_mode_info(cm, xd, mi, mi_row, mi_col, r); 56491037db265ecdd914a26e056cf69207b4f50924ehkuang else 5655ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang read_inter_frame_mode_info(cm, xd, tile, mi, mi_row, mi_col, r); 566ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 5675ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang for (y = 0, z = 0; y < y_mis; y++, z += cm->mode_info_stride) { 5681184aebb761cbeac9124c37189a80a1a58f04b6bhkuang for (x = !y; x < x_mis; x++) { 5695ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang xd->mi_8x8[z + x] = mi; 5705ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 5715ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 572ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 573