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" 1791037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/common/vp9_mvref_common.h" 18ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang#include "vp9/common/vp9_pred_common.h" 1991037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/common/vp9_reconinter.h" 2091037db265ecdd914a26e056cf69207b4f50924ehkuang#include "vp9/common/vp9_seg_common.h" 2191037db265ecdd914a26e056cf69207b4f50924ehkuang 22ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang#include "vp9/decoder/vp9_decodemv.h" 23b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include "vp9/decoder/vp9_decodeframe.h" 24b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include "vp9/decoder/vp9_reader.h" 2591037db265ecdd914a26e056cf69207b4f50924ehkuang 2691037db265ecdd914a26e056cf69207b4f50924ehkuangstatic MB_PREDICTION_MODE read_intra_mode(vp9_reader *r, const vp9_prob *p) { 27b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian return (MB_PREDICTION_MODE)vp9_read_tree(r, vp9_intra_mode_tree, p); 2891037db265ecdd914a26e056cf69207b4f50924ehkuang} 29ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 305ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic MB_PREDICTION_MODE read_intra_mode_y(VP9_COMMON *cm, vp9_reader *r, 315ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int size_group) { 325ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const MB_PREDICTION_MODE y_mode = read_intra_mode(r, 335ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang cm->fc.y_mode_prob[size_group]); 345ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 355ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++cm->counts.y_mode[size_group][y_mode]; 365ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return y_mode; 375ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang} 385ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang 395ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic MB_PREDICTION_MODE read_intra_mode_uv(VP9_COMMON *cm, vp9_reader *r, 405ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MB_PREDICTION_MODE y_mode) { 415ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const MB_PREDICTION_MODE uv_mode = read_intra_mode(r, 425ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang cm->fc.uv_mode_prob[y_mode]); 435ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 445ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++cm->counts.uv_mode[y_mode][uv_mode]; 455ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return uv_mode; 465ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang} 475ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang 48f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuangstatic MB_PREDICTION_MODE read_inter_mode(VP9_COMMON *cm, vp9_reader *r, 499b35249446b07f40ac5fcc3205f2c048616efacchkuang int ctx) { 50b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int mode = vp9_read_tree(r, vp9_inter_mode_tree, 51b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian cm->fc.inter_mode_probs[ctx]); 525ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 539b35249446b07f40ac5fcc3205f2c048616efacchkuang ++cm->counts.inter_mode[ctx][mode]; 549b35249446b07f40ac5fcc3205f2c048616efacchkuang 559b35249446b07f40ac5fcc3205f2c048616efacchkuang return NEARESTMV + mode; 5691037db265ecdd914a26e056cf69207b4f50924ehkuang} 57ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 5891037db265ecdd914a26e056cf69207b4f50924ehkuangstatic int read_segment_id(vp9_reader *r, const struct segmentation *seg) { 59b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian return vp9_read_tree(r, vp9_segment_tree, seg->tree_probs); 6091037db265ecdd914a26e056cf69207b4f50924ehkuang} 61ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 6291037db265ecdd914a26e056cf69207b4f50924ehkuangstatic TX_SIZE read_selected_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd, 639b35249446b07f40ac5fcc3205f2c048616efacchkuang TX_SIZE max_tx_size, vp9_reader *r) { 64b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int ctx = vp9_get_tx_size_context(xd); 659b35249446b07f40ac5fcc3205f2c048616efacchkuang const vp9_prob *tx_probs = get_tx_probs(max_tx_size, ctx, &cm->fc.tx_probs); 666ac915abcdb404a00d927fe6308a47fcf09d9519hkuang int tx_size = vp9_read(r, tx_probs[0]); 679b35249446b07f40ac5fcc3205f2c048616efacchkuang if (tx_size != TX_4X4 && max_tx_size >= TX_16X16) { 6891037db265ecdd914a26e056cf69207b4f50924ehkuang tx_size += vp9_read(r, tx_probs[1]); 699b35249446b07f40ac5fcc3205f2c048616efacchkuang if (tx_size != TX_8X8 && max_tx_size >= TX_32X32) 7091037db265ecdd914a26e056cf69207b4f50924ehkuang tx_size += vp9_read(r, tx_probs[2]); 7191037db265ecdd914a26e056cf69207b4f50924ehkuang } 7291037db265ecdd914a26e056cf69207b4f50924ehkuang 735ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 749b35249446b07f40ac5fcc3205f2c048616efacchkuang ++get_tx_counts(max_tx_size, ctx, &cm->counts.tx)[tx_size]; 756ac915abcdb404a00d927fe6308a47fcf09d9519hkuang return (TX_SIZE)tx_size; 76ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 77ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 789b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic TX_SIZE read_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd, TX_MODE tx_mode, 799b35249446b07f40ac5fcc3205f2c048616efacchkuang BLOCK_SIZE bsize, int allow_select, vp9_reader *r) { 809b35249446b07f40ac5fcc3205f2c048616efacchkuang const TX_SIZE max_tx_size = max_txsize_lookup[bsize]; 819b35249446b07f40ac5fcc3205f2c048616efacchkuang if (allow_select && tx_mode == TX_MODE_SELECT && bsize >= BLOCK_8X8) 829b35249446b07f40ac5fcc3205f2c048616efacchkuang return read_selected_tx_size(cm, xd, max_tx_size, r); 839b35249446b07f40ac5fcc3205f2c048616efacchkuang else 849b35249446b07f40ac5fcc3205f2c048616efacchkuang return MIN(max_tx_size, tx_mode_to_biggest_tx_size[tx_mode]); 85ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 86ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 871184aebb761cbeac9124c37189a80a1a58f04b6bhkuangstatic void set_segment_id(VP9_COMMON *cm, BLOCK_SIZE bsize, 88ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang int mi_row, int mi_col, int segment_id) { 8991037db265ecdd914a26e056cf69207b4f50924ehkuang const int mi_offset = mi_row * cm->mi_cols + mi_col; 905ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const int bw = num_8x8_blocks_wide_lookup[bsize]; 915ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const int bh = num_8x8_blocks_high_lookup[bsize]; 92ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang const int xmis = MIN(cm->mi_cols - mi_col, bw); 9391037db265ecdd914a26e056cf69207b4f50924ehkuang const int ymis = MIN(cm->mi_rows - mi_row, bh); 94ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang int x, y; 95ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 9691037db265ecdd914a26e056cf69207b4f50924ehkuang assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); 97ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 9891037db265ecdd914a26e056cf69207b4f50924ehkuang for (y = 0; y < ymis; y++) 9991037db265ecdd914a26e056cf69207b4f50924ehkuang for (x = 0; x < xmis; x++) 10091037db265ecdd914a26e056cf69207b4f50924ehkuang cm->last_frame_seg_map[mi_offset + y * cm->mi_cols + x] = segment_id; 101ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 102ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 1035ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic int read_intra_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd, 1045ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int mi_row, int mi_col, 10591037db265ecdd914a26e056cf69207b4f50924ehkuang vp9_reader *r) { 1065ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang struct segmentation *const seg = &cm->seg; 1076ac915abcdb404a00d927fe6308a47fcf09d9519hkuang const BLOCK_SIZE bsize = xd->mi[0]->mbmi.sb_type; 10891037db265ecdd914a26e056cf69207b4f50924ehkuang int segment_id; 10991037db265ecdd914a26e056cf69207b4f50924ehkuang 11091037db265ecdd914a26e056cf69207b4f50924ehkuang if (!seg->enabled) 11191037db265ecdd914a26e056cf69207b4f50924ehkuang return 0; // Default for disabled segmentation 11291037db265ecdd914a26e056cf69207b4f50924ehkuang 11391037db265ecdd914a26e056cf69207b4f50924ehkuang if (!seg->update_map) 11491037db265ecdd914a26e056cf69207b4f50924ehkuang return 0; 115ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 11691037db265ecdd914a26e056cf69207b4f50924ehkuang segment_id = read_segment_id(r, seg); 1175ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang set_segment_id(cm, bsize, mi_row, mi_col, segment_id); 11891037db265ecdd914a26e056cf69207b4f50924ehkuang return segment_id; 11991037db265ecdd914a26e056cf69207b4f50924ehkuang} 12091037db265ecdd914a26e056cf69207b4f50924ehkuang 1215ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic int read_inter_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd, 1225ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int mi_row, int mi_col, vp9_reader *r) { 1231184aebb761cbeac9124c37189a80a1a58f04b6bhkuang struct segmentation *const seg = &cm->seg; 1246ac915abcdb404a00d927fe6308a47fcf09d9519hkuang MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi; 125b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const BLOCK_SIZE bsize = mbmi->sb_type; 126b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int predicted_segment_id, segment_id; 127ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 12891037db265ecdd914a26e056cf69207b4f50924ehkuang if (!seg->enabled) 12991037db265ecdd914a26e056cf69207b4f50924ehkuang return 0; // Default for disabled segmentation 130ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 131b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian predicted_segment_id = vp9_get_segment_id(cm, cm->last_frame_seg_map, 132b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian bsize, mi_row, mi_col); 13391037db265ecdd914a26e056cf69207b4f50924ehkuang if (!seg->update_map) 134b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian return predicted_segment_id; 13591037db265ecdd914a26e056cf69207b4f50924ehkuang 13691037db265ecdd914a26e056cf69207b4f50924ehkuang if (seg->temporal_update) { 1371184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const vp9_prob pred_prob = vp9_get_pred_prob_seg_id(seg, xd); 138b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian mbmi->seg_id_predicted = vp9_read(r, pred_prob); 139b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian segment_id = mbmi->seg_id_predicted ? predicted_segment_id 140b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian : read_segment_id(r, seg); 14191037db265ecdd914a26e056cf69207b4f50924ehkuang } else { 14291037db265ecdd914a26e056cf69207b4f50924ehkuang segment_id = read_segment_id(r, seg); 143ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 14491037db265ecdd914a26e056cf69207b4f50924ehkuang set_segment_id(cm, bsize, mi_row, mi_col, segment_id); 14591037db265ecdd914a26e056cf69207b4f50924ehkuang return segment_id; 14691037db265ecdd914a26e056cf69207b4f50924ehkuang} 147ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 148b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianstatic int read_skip(VP9_COMMON *cm, const MACROBLOCKD *xd, 149b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int segment_id, vp9_reader *r) { 1505ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { 1515ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return 1; 1525ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } else { 153b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int ctx = vp9_get_skip_context(xd); 154b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int skip = vp9_read(r, cm->fc.skip_probs[ctx]); 1555ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 156b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian ++cm->counts.skip[ctx][skip]; 1575ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return skip; 158ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 15991037db265ecdd914a26e056cf69207b4f50924ehkuang} 160ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 1615ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic void read_intra_frame_mode_info(VP9_COMMON *const cm, 1625ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MACROBLOCKD *const xd, 163f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int mi_row, int mi_col, vp9_reader *r) { 1646ac915abcdb404a00d927fe6308a47fcf09d9519hkuang MODE_INFO *const mi = xd->mi[0]; 165b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian MB_MODE_INFO *const mbmi = &mi->mbmi; 1666ac915abcdb404a00d927fe6308a47fcf09d9519hkuang const MODE_INFO *above_mi = xd->mi[-cm->mi_stride]; 1676ac915abcdb404a00d927fe6308a47fcf09d9519hkuang const MODE_INFO *left_mi = xd->left_available ? xd->mi[-1] : NULL; 168b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const BLOCK_SIZE bsize = mbmi->sb_type; 169a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian int i; 17091037db265ecdd914a26e056cf69207b4f50924ehkuang 1715ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->segment_id = read_intra_segment_id(cm, xd, mi_row, mi_col, r); 172b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian mbmi->skip = read_skip(cm, xd, mbmi->segment_id, r); 1735ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->tx_size = read_tx_size(cm, xd, cm->tx_mode, bsize, 1, r); 17491037db265ecdd914a26e056cf69207b4f50924ehkuang mbmi->ref_frame[0] = INTRA_FRAME; 175f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->ref_frame[1] = NONE; 17691037db265ecdd914a26e056cf69207b4f50924ehkuang 177a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian switch (bsize) { 178a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian case BLOCK_4X4: 179a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian for (i = 0; i < 4; ++i) 180a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mi->bmi[i].as_mode = 181a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, i)); 182a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mbmi->mode = mi->bmi[3].as_mode; 183a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian break; 184a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian case BLOCK_4X8: 185a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mi->bmi[0].as_mode = mi->bmi[2].as_mode = 186a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 0)); 187a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mi->bmi[1].as_mode = mi->bmi[3].as_mode = mbmi->mode = 188a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 1)); 189a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian break; 190a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian case BLOCK_8X4: 191a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mi->bmi[0].as_mode = mi->bmi[1].as_mode = 192a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 0)); 193a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mi->bmi[2].as_mode = mi->bmi[3].as_mode = mbmi->mode = 194a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 2)); 195a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian break; 196a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian default: 197a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mbmi->mode = read_intra_mode(r, 198a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian get_y_mode_probs(mi, above_mi, left_mi, 0)); 199ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 200ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 20191037db265ecdd914a26e056cf69207b4f50924ehkuang mbmi->uv_mode = read_intra_mode(r, vp9_kf_uv_mode_prob[mbmi->mode]); 202ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 203ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 204ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuangstatic int read_mv_component(vp9_reader *r, 205ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang const nmv_component *mvcomp, int usehp) { 206ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang int mag, d, fr, hp; 207ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang const int sign = vp9_read(r, mvcomp->sign); 208b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int mv_class = vp9_read_tree(r, vp9_mv_class_tree, mvcomp->classes); 20991037db265ecdd914a26e056cf69207b4f50924ehkuang const int class0 = mv_class == MV_CLASS_0; 210ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 211ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // Integer part 21291037db265ecdd914a26e056cf69207b4f50924ehkuang if (class0) { 213b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian d = vp9_read_tree(r, vp9_mv_class0_tree, mvcomp->class0); 214ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } else { 215ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang int i; 216ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang const int n = mv_class + CLASS0_BITS - 1; // number of bits 217ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 218ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang d = 0; 219ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang for (i = 0; i < n; ++i) 220ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang d |= vp9_read(r, mvcomp->bits[i]) << i; 221ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 222ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 223ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // Fractional part 224b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian fr = vp9_read_tree(r, vp9_mv_fp_tree, class0 ? mvcomp->class0_fp[d] 225b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian : mvcomp->fp); 226ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 227ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 228ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // High precision part (if hp is not used, the default value of the hp is 1) 22991037db265ecdd914a26e056cf69207b4f50924ehkuang hp = usehp ? vp9_read(r, class0 ? mvcomp->class0_hp : mvcomp->hp) 230ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang : 1; 231ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 23291037db265ecdd914a26e056cf69207b4f50924ehkuang // Result 233ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang mag = vp9_get_mv_mag(mv_class, (d << 3) | (fr << 1) | hp) + 1; 234ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang return sign ? -mag : mag; 235ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 236ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 23791037db265ecdd914a26e056cf69207b4f50924ehkuangstatic INLINE void read_mv(vp9_reader *r, MV *mv, const MV *ref, 23891037db265ecdd914a26e056cf69207b4f50924ehkuang const nmv_context *ctx, 239f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang nmv_context_counts *counts, int allow_hp) { 2406ac915abcdb404a00d927fe6308a47fcf09d9519hkuang const MV_JOINT_TYPE joint_type = 2416ac915abcdb404a00d927fe6308a47fcf09d9519hkuang (MV_JOINT_TYPE)vp9_read_tree(r, vp9_mv_joint_tree, ctx->joints); 242f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int use_hp = allow_hp && vp9_use_mv_hp(ref); 24391037db265ecdd914a26e056cf69207b4f50924ehkuang MV diff = {0, 0}; 24491037db265ecdd914a26e056cf69207b4f50924ehkuang 2456ac915abcdb404a00d927fe6308a47fcf09d9519hkuang if (mv_joint_vertical(joint_type)) 246f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang diff.row = read_mv_component(r, &ctx->comps[0], use_hp); 24791037db265ecdd914a26e056cf69207b4f50924ehkuang 2486ac915abcdb404a00d927fe6308a47fcf09d9519hkuang if (mv_joint_horizontal(joint_type)) 249f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang diff.col = read_mv_component(r, &ctx->comps[1], use_hp); 25091037db265ecdd914a26e056cf69207b4f50924ehkuang 25191037db265ecdd914a26e056cf69207b4f50924ehkuang vp9_inc_mv(&diff, counts); 25291037db265ecdd914a26e056cf69207b4f50924ehkuang 25391037db265ecdd914a26e056cf69207b4f50924ehkuang mv->row = ref->row + diff.row; 25491037db265ecdd914a26e056cf69207b4f50924ehkuang mv->col = ref->col + diff.col; 25591037db265ecdd914a26e056cf69207b4f50924ehkuang} 25691037db265ecdd914a26e056cf69207b4f50924ehkuang 257b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianstatic REFERENCE_MODE read_block_reference_mode(VP9_COMMON *cm, 258b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const MACROBLOCKD *xd, 259b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vp9_reader *r) { 260b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (cm->reference_mode == REFERENCE_MODE_SELECT) { 261b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int ctx = vp9_get_reference_mode_context(cm, xd); 262a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian const REFERENCE_MODE mode = 263a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian (REFERENCE_MODE)vp9_read(r, cm->fc.comp_inter_prob[ctx]); 264b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (!cm->frame_parallel_decoding_mode) 265b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian ++cm->counts.comp_inter[ctx][mode]; 266b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian return mode; // SINGLE_REFERENCE or COMPOUND_REFERENCE 267b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } else { 268b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian return cm->reference_mode; 269b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } 2709b35249446b07f40ac5fcc3205f2c048616efacchkuang} 2719b35249446b07f40ac5fcc3205f2c048616efacchkuang 272ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang// Read the referncence frame 2735ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic void read_ref_frames(VP9_COMMON *const cm, MACROBLOCKD *const xd, 2745ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vp9_reader *r, 275f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int segment_id, MV_REFERENCE_FRAME ref_frame[2]) { 27691037db265ecdd914a26e056cf69207b4f50924ehkuang FRAME_CONTEXT *const fc = &cm->fc; 27791037db265ecdd914a26e056cf69207b4f50924ehkuang FRAME_COUNTS *const counts = &cm->counts; 278ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 2791184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { 2806ac915abcdb404a00d927fe6308a47fcf09d9519hkuang ref_frame[0] = (MV_REFERENCE_FRAME)vp9_get_segdata(&cm->seg, segment_id, 2816ac915abcdb404a00d927fe6308a47fcf09d9519hkuang SEG_LVL_REF_FRAME); 28291037db265ecdd914a26e056cf69207b4f50924ehkuang ref_frame[1] = NONE; 28391037db265ecdd914a26e056cf69207b4f50924ehkuang } else { 284b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const REFERENCE_MODE mode = read_block_reference_mode(cm, xd, r); 285ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // FIXME(rbultje) I'm pretty sure this breaks segmentation ref frame coding 286b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (mode == COMPOUND_REFERENCE) { 2879b35249446b07f40ac5fcc3205f2c048616efacchkuang const int idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref]; 2889b35249446b07f40ac5fcc3205f2c048616efacchkuang const int ctx = vp9_get_pred_context_comp_ref_p(cm, xd); 2899b35249446b07f40ac5fcc3205f2c048616efacchkuang const int bit = vp9_read(r, fc->comp_ref_prob[ctx]); 2905ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 2919b35249446b07f40ac5fcc3205f2c048616efacchkuang ++counts->comp_ref[ctx][bit]; 2929b35249446b07f40ac5fcc3205f2c048616efacchkuang ref_frame[idx] = cm->comp_fixed_ref; 2939b35249446b07f40ac5fcc3205f2c048616efacchkuang ref_frame[!idx] = cm->comp_var_ref[bit]; 294b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } else if (mode == SINGLE_REFERENCE) { 295f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int ctx0 = vp9_get_pred_context_single_ref_p1(xd); 296f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int bit0 = vp9_read(r, fc->single_ref_prob[ctx0][0]); 2975ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 2985ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++counts->single_ref[ctx0][0][bit0]; 299f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (bit0) { 300f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int ctx1 = vp9_get_pred_context_single_ref_p2(xd); 301f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int bit1 = vp9_read(r, fc->single_ref_prob[ctx1][1]); 3025ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 3035ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++counts->single_ref[ctx1][1][bit1]; 3049b35249446b07f40ac5fcc3205f2c048616efacchkuang ref_frame[0] = bit1 ? ALTREF_FRAME : GOLDEN_FRAME; 305ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } else { 306ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang ref_frame[0] = LAST_FRAME; 307ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 308f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 309f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang ref_frame[1] = NONE; 3109b35249446b07f40ac5fcc3205f2c048616efacchkuang } else { 311b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian assert(0 && "Invalid prediction mode."); 312ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 313ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 314ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 315ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 316ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 317b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianstatic INLINE INTERP_FILTER read_switchable_interp_filter( 3185ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang VP9_COMMON *const cm, MACROBLOCKD *const xd, vp9_reader *r) { 31991037db265ecdd914a26e056cf69207b4f50924ehkuang const int ctx = vp9_get_pred_context_switchable_interp(xd); 320a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian const INTERP_FILTER type = 321a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian (INTERP_FILTER)vp9_read_tree(r, vp9_switchable_interp_tree, 322a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian 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; 332a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian int i; 333f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 334f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->ref_frame[0] = INTRA_FRAME; 335f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->ref_frame[1] = NONE; 336ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 337a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian switch (bsize) { 338a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian case BLOCK_4X4: 339a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian for (i = 0; i < 4; ++i) 340a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mi->bmi[i].as_mode = read_intra_mode_y(cm, r, 0); 341a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mbmi->mode = mi->bmi[3].as_mode; 342a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian break; 343a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian case BLOCK_4X8: 344a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mi->bmi[0].as_mode = mi->bmi[2].as_mode = read_intra_mode_y(cm, r, 0); 345a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mi->bmi[1].as_mode = mi->bmi[3].as_mode = mbmi->mode = 346a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian read_intra_mode_y(cm, r, 0); 347a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian break; 348a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian case BLOCK_8X4: 349a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mi->bmi[0].as_mode = mi->bmi[1].as_mode = read_intra_mode_y(cm, r, 0); 350a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mi->bmi[2].as_mode = mi->bmi[3].as_mode = mbmi->mode = 351a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian read_intra_mode_y(cm, r, 0); 352a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian break; 353a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian default: 354a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian mbmi->mode = read_intra_mode_y(cm, r, size_group_lookup[bsize]); 35591037db265ecdd914a26e056cf69207b4f50924ehkuang } 356ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 3575ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->uv_mode = read_intra_mode_uv(cm, r, mbmi->mode); 358ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 359ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 360b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianstatic INLINE int is_mv_valid(const MV *mv) { 361b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian return mv->row > MV_LOW && mv->row < MV_UPP && 362b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian mv->col > MV_LOW && mv->col < MV_UPP; 363b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian} 364b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 3655ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic INLINE int assign_mv(VP9_COMMON *cm, MB_PREDICTION_MODE mode, 366b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int_mv mv[2], int_mv ref_mv[2], 367b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int_mv nearest_mv[2], int_mv near_mv[2], 368b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int is_compound, int allow_hp, vp9_reader *r) { 3695ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int i; 3705ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int ret = 1; 3715ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang 3725ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang switch (mode) { 3735ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang case NEWMV: { 3745ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang nmv_context_counts *const mv_counts = cm->frame_parallel_decoding_mode ? 3755ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang NULL : &cm->counts.mv; 3765ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang for (i = 0; i < 1 + is_compound; ++i) { 377b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian read_mv(r, &mv[i].as_mv, &ref_mv[i].as_mv, &cm->fc.nmvc, mv_counts, 378b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian allow_hp); 379b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian ret = ret && is_mv_valid(&mv[i].as_mv); 3805ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 3815ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang break; 3825ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 3835ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang case NEARESTMV: { 3845ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mv[0].as_int = nearest_mv[0].as_int; 385b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (is_compound) 386b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian mv[1].as_int = nearest_mv[1].as_int; 3875ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang break; 3885ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 3895ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang case NEARMV: { 3905ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mv[0].as_int = near_mv[0].as_int; 391b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (is_compound) 392b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian mv[1].as_int = near_mv[1].as_int; 3935ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang break; 3945ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 3955ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang case ZEROMV: { 3965ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mv[0].as_int = 0; 397b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (is_compound) 398b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian mv[1].as_int = 0; 3995ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang break; 4005ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 4015ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang default: { 4025ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return 0; 4035ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 4045ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 4055ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return ret; 4065ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang} 40791037db265ecdd914a26e056cf69207b4f50924ehkuang 4085ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic int read_is_inter_block(VP9_COMMON *const cm, MACROBLOCKD *const xd, 4095ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int segment_id, vp9_reader *r) { 4101184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { 4111184aebb761cbeac9124c37189a80a1a58f04b6bhkuang return vp9_get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME) != 412f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang INTRA_FRAME; 41391037db265ecdd914a26e056cf69207b4f50924ehkuang } else { 414b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int ctx = vp9_get_intra_inter_context(xd); 415b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int is_inter = vp9_read(r, cm->fc.intra_inter_prob[ctx]); 4165ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (!cm->frame_parallel_decoding_mode) 4175ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang ++cm->counts.intra_inter[ctx][is_inter]; 418f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang return is_inter; 41991037db265ecdd914a26e056cf69207b4f50924ehkuang } 420ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 421ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4225ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic void read_inter_block_mode_info(VP9_COMMON *const cm, 4235ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MACROBLOCKD *const xd, 4245ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const TileInfo *const tile, 4255ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MODE_INFO *const mi, 426f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int mi_row, int mi_col, vp9_reader *r) { 42791037db265ecdd914a26e056cf69207b4f50924ehkuang MB_MODE_INFO *const mbmi = &mi->mbmi; 4281184aebb761cbeac9124c37189a80a1a58f04b6bhkuang const BLOCK_SIZE bsize = mbmi->sb_type; 4295ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const int allow_hp = cm->allow_high_precision_mv; 430ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 431b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int_mv nearestmv[2], nearmv[2]; 432b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int inter_mode_ctx, ref, is_compound; 433ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4345ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang read_ref_frames(cm, xd, r, mbmi->segment_id, mbmi->ref_frame); 4351184aebb761cbeac9124c37189a80a1a58f04b6bhkuang is_compound = has_second_ref(mbmi); 436ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 437b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian for (ref = 0; ref < 1 + is_compound; ++ref) { 438b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const MV_REFERENCE_FRAME frame = mbmi->ref_frame[ref]; 439a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian vp9_find_mv_refs(cm, xd, tile, mi, frame, mbmi->ref_mvs[frame], 440b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian mi_row, mi_col); 441b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } 442ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 443b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian inter_mode_ctx = mbmi->mode_context[mbmi->ref_frame[0]]; 444ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4451184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { 446f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->mode = ZEROMV; 4475ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (bsize < BLOCK_8X8) { 4485ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, 4495ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang "Invalid usage of segement feature on small blocks"); 4505ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang return; 4515ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } 4521184aebb761cbeac9124c37189a80a1a58f04b6bhkuang } else { 4531184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (bsize >= BLOCK_8X8) 4541184aebb761cbeac9124c37189a80a1a58f04b6bhkuang mbmi->mode = read_inter_mode(cm, r, inter_mode_ctx); 4551184aebb761cbeac9124c37189a80a1a58f04b6bhkuang } 456ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 4571184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) { 458b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian for (ref = 0; ref < 1 + is_compound; ++ref) { 459b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vp9_find_best_ref_mvs(xd, allow_hp, mbmi->ref_mvs[mbmi->ref_frame[ref]], 460b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian &nearestmv[ref], &nearmv[ref]); 461ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 462f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang } 463ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 464b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian mbmi->interp_filter = (cm->interp_filter == SWITCHABLE) 465b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian ? read_switchable_interp_filter(cm, xd, r) 466b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian : cm->interp_filter; 4671184aebb761cbeac9124c37189a80a1a58f04b6bhkuang 4681184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (bsize < BLOCK_8X8) { 469f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2 470f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2 471f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int idx, idy; 472a72801d7d92ababb50eecf27a36bd222d031d2feVignesh Venkatasubramanian MB_PREDICTION_MODE b_mode; 473b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int_mv nearest_sub8x8[2], near_sub8x8[2]; 474f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang for (idy = 0; idy < 2; idy += num_4x4_h) { 475f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang for (idx = 0; idx < 2; idx += num_4x4_w) { 4765ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int_mv block[2]; 477f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang const int j = idy * 2 + idx; 4785ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang b_mode = read_inter_mode(cm, r, inter_mode_ctx); 47991037db265ecdd914a26e056cf69207b4f50924ehkuang 480b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (b_mode == NEARESTMV || b_mode == NEARMV) 481b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian for (ref = 0; ref < 1 + is_compound; ++ref) 482b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vp9_append_sub8x8_mvs_for_idx(cm, xd, tile, j, ref, mi_row, mi_col, 483b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian &nearest_sub8x8[ref], 484b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian &near_sub8x8[ref]); 485ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 486b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (!assign_mv(cm, b_mode, block, nearestmv, 487b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian nearest_sub8x8, near_sub8x8, 4885ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang is_compound, allow_hp, r)) { 4895ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang xd->corrupted |= 1; 4905ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang break; 4915ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang }; 4925ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang 4935ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mi->bmi[j].as_mv[0].as_int = block[0].as_int; 4941184aebb761cbeac9124c37189a80a1a58f04b6bhkuang if (is_compound) 4955ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mi->bmi[j].as_mv[1].as_int = block[1].as_int; 496f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 497f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (num_4x4_h == 2) 498f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mi->bmi[j + 2] = mi->bmi[j]; 499f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (num_4x4_w == 2) 500f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mi->bmi[j + 1] = mi->bmi[j]; 501ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 502ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 503f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 5045ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mi->mbmi.mode = b_mode; 505f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 5065ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->mv[0].as_int = mi->bmi[3].as_mv[0].as_int; 5075ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->mv[1].as_int = mi->bmi[3].as_mv[1].as_int; 5085ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang } else { 509b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian xd->corrupted |= !assign_mv(cm, mbmi->mode, mbmi->mv, nearestmv, 510b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian nearestmv, nearmv, is_compound, allow_hp, r); 51191037db265ecdd914a26e056cf69207b4f50924ehkuang } 51291037db265ecdd914a26e056cf69207b4f50924ehkuang} 51391037db265ecdd914a26e056cf69207b4f50924ehkuang 5145ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangstatic void read_inter_frame_mode_info(VP9_COMMON *const cm, 5155ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang MACROBLOCKD *const xd, 5165ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const TileInfo *const tile, 517f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int mi_row, int mi_col, vp9_reader *r) { 5186ac915abcdb404a00d927fe6308a47fcf09d9519hkuang MODE_INFO *const mi = xd->mi[0]; 519f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang MB_MODE_INFO *const mbmi = &mi->mbmi; 520f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang int inter_block; 521f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 522f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->mv[0].as_int = 0; 523f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang mbmi->mv[1].as_int = 0; 5245ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->segment_id = read_inter_segment_id(cm, xd, mi_row, mi_col, r); 525b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian mbmi->skip = read_skip(cm, xd, mbmi->segment_id, r); 5265ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang inter_block = read_is_inter_block(cm, xd, mbmi->segment_id, r); 5275ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang mbmi->tx_size = read_tx_size(cm, xd, cm->tx_mode, mbmi->sb_type, 528b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian !mbmi->skip || !inter_block, r); 529f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 530f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang if (inter_block) 5315ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang read_inter_block_mode_info(cm, xd, tile, mi, mi_row, mi_col, r); 532f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang else 5335ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang read_intra_block_mode_info(cm, mi, r); 534f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang} 535f3bed9137f66ef693bd406e43b17e9a1114f1e14hkuang 5365ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuangvoid vp9_read_mode_info(VP9_COMMON *cm, MACROBLOCKD *xd, 5375ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang const TileInfo *const tile, 5385ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang int mi_row, int mi_col, vp9_reader *r) { 5395ae7ac49f08a179e4f054d99fcfc9dce78d26e58hkuang if (frame_is_intra_only(cm)) 540b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian read_intra_frame_mode_info(cm, xd, mi_row, mi_col, r); 54191037db265ecdd914a26e056cf69207b4f50924ehkuang else 542b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian read_inter_frame_mode_info(cm, xd, tile, mi_row, mi_col, r); 543ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 544