6d3bd96607
The codec should effectively run with motion vector of range (-2048, 2047) in full pixels, for sequences of 1080p and below. Add assertions to clarify this behavior. Change-Id: Ia0cac28249f587d8f8882205228fa480263ab313
688 lines
23 KiB
C
688 lines
23 KiB
C
/*
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Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#include "vp9/common/vp9_common.h"
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#include "vp9/common/vp9_entropy.h"
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#include "vp9/common/vp9_entropymode.h"
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#include "vp9/common/vp9_entropymv.h"
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#include "vp9/common/vp9_findnearmv.h"
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#include "vp9/common/vp9_mvref_common.h"
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#include "vp9/common/vp9_pred_common.h"
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#include "vp9/common/vp9_reconinter.h"
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#include "vp9/common/vp9_seg_common.h"
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#include "vp9/decoder/vp9_decodemv.h"
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#include "vp9/decoder/vp9_decodframe.h"
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#include "vp9/decoder/vp9_onyxd_int.h"
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#include "vp9/decoder/vp9_dsubexp.h"
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#include "vp9/decoder/vp9_treereader.h"
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static MB_PREDICTION_MODE read_intra_mode(vp9_reader *r, const vp9_prob *p) {
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return (MB_PREDICTION_MODE)treed_read(r, vp9_intra_mode_tree, p);
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}
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static MB_PREDICTION_MODE read_intra_mode_y(VP9_COMMON *cm, vp9_reader *r,
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int size_group) {
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const MB_PREDICTION_MODE y_mode = read_intra_mode(r,
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cm->fc.y_mode_prob[size_group]);
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++cm->counts.y_mode[size_group][y_mode];
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return y_mode;
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}
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static MB_PREDICTION_MODE read_intra_mode_uv(VP9_COMMON *cm, vp9_reader *r,
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MB_PREDICTION_MODE y_mode) {
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const MB_PREDICTION_MODE uv_mode = read_intra_mode(r,
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cm->fc.uv_mode_prob[y_mode]);
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++cm->counts.uv_mode[y_mode][uv_mode];
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return uv_mode;
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}
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static MB_PREDICTION_MODE read_inter_mode(VP9_COMMON *cm, vp9_reader *r,
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uint8_t context) {
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const MB_PREDICTION_MODE mode = treed_read(r, vp9_inter_mode_tree,
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cm->fc.inter_mode_probs[context]);
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++cm->counts.inter_mode[context][inter_mode_offset(mode)];
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return mode;
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}
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static int read_segment_id(vp9_reader *r, const struct segmentation *seg) {
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return treed_read(r, vp9_segment_tree, seg->tree_probs);
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}
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static TX_SIZE read_selected_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd,
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BLOCK_SIZE bsize, vp9_reader *r) {
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const uint8_t context = vp9_get_pred_context_tx_size(xd);
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const vp9_prob *tx_probs = get_tx_probs(bsize, context, &cm->fc.tx_probs);
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TX_SIZE tx_size = vp9_read(r, tx_probs[0]);
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if (tx_size != TX_4X4 && bsize >= BLOCK_16X16) {
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tx_size += vp9_read(r, tx_probs[1]);
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if (tx_size != TX_8X8 && bsize >= BLOCK_32X32)
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tx_size += vp9_read(r, tx_probs[2]);
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}
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update_tx_counts(bsize, context, tx_size, &cm->counts.tx);
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return tx_size;
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}
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static TX_SIZE read_tx_size(VP9D_COMP *pbi, TX_MODE tx_mode,
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BLOCK_SIZE bsize, int allow_select,
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vp9_reader *r) {
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VP9_COMMON *const cm = &pbi->common;
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MACROBLOCKD *const xd = &pbi->mb;
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if (allow_select && tx_mode == TX_MODE_SELECT && bsize >= BLOCK_8X8)
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return read_selected_tx_size(cm, xd, bsize, r);
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else if (tx_mode >= ALLOW_32X32 && bsize >= BLOCK_32X32)
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return TX_32X32;
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else if (tx_mode >= ALLOW_16X16 && bsize >= BLOCK_16X16)
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return TX_16X16;
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else if (tx_mode >= ALLOW_8X8 && bsize >= BLOCK_8X8)
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return TX_8X8;
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else
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return TX_4X4;
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}
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static int read_intra_segment_id(VP9D_COMP *pbi, int mi_row, int mi_col,
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vp9_reader *r) {
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struct segmentation *const seg = &pbi->common.seg;
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if (!seg->enabled)
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return 0; // Default for disabled segmentation
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if (!seg->update_map)
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return 0;
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return read_segment_id(r, seg);
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}
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static int read_inter_segment_id(VP9D_COMP *pbi, int mi_row, int mi_col,
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vp9_reader *r) {
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VP9_COMMON *const cm = &pbi->common;
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MACROBLOCKD *const xd = &pbi->mb;
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struct segmentation *const seg = &cm->seg;
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const BLOCK_SIZE bsize = xd->this_mi->mbmi.sb_type;
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int pred_segment_id;;
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if (!seg->enabled)
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return 0; // Default for disabled segmentation
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pred_segment_id = vp9_get_segment_id(cm, cm->last_frame_seg_map,
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bsize, mi_row, mi_col);
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if (!seg->update_map)
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return pred_segment_id;
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if (seg->temporal_update) {
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const vp9_prob pred_prob = vp9_get_pred_prob_seg_id(seg, xd);
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const int pred_flag = vp9_read(r, pred_prob);
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vp9_set_pred_flag_seg_id(xd, pred_flag);
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return pred_flag ? pred_segment_id : read_segment_id(r, seg);
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} else {
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return read_segment_id(r, seg);
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}
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}
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static uint8_t read_skip_coeff(VP9D_COMP *pbi, int segment_id, vp9_reader *r) {
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VP9_COMMON *const cm = &pbi->common;
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MACROBLOCKD *const xd = &pbi->mb;
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int skip_coeff = vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP);
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if (!skip_coeff) {
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const int ctx = vp9_get_pred_context_mbskip(xd);
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skip_coeff = vp9_read(r, vp9_get_pred_prob_mbskip(cm, xd));
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cm->counts.mbskip[ctx][skip_coeff]++;
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}
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return skip_coeff;
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}
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static void read_intra_frame_mode_info(VP9D_COMP *pbi, MODE_INFO *m,
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int mi_row, int mi_col, vp9_reader *r) {
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VP9_COMMON *const cm = &pbi->common;
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MACROBLOCKD *const xd = &pbi->mb;
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MB_MODE_INFO *const mbmi = &m->mbmi;
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const BLOCK_SIZE bsize = mbmi->sb_type;
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const MODE_INFO *above_mi = xd->mi_8x8[-cm->mode_info_stride];
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const MODE_INFO *left_mi = xd->mi_8x8[-1];
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mbmi->segment_id = read_intra_segment_id(pbi, mi_row, mi_col, r);
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mbmi->skip_coeff = read_skip_coeff(pbi, mbmi->segment_id, r);
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mbmi->tx_size = read_tx_size(pbi, cm->tx_mode, bsize, 1, r);
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mbmi->ref_frame[0] = INTRA_FRAME;
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mbmi->ref_frame[1] = NONE;
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if (bsize >= BLOCK_8X8) {
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const MB_PREDICTION_MODE A = above_block_mode(m, above_mi, 0);
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const MB_PREDICTION_MODE L = xd->left_available ?
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left_block_mode(m, left_mi, 0) : DC_PRED;
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mbmi->mode = read_intra_mode(r, vp9_kf_y_mode_prob[A][L]);
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} else {
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// Only 4x4, 4x8, 8x4 blocks
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const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2
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const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2
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int idx, idy;
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for (idy = 0; idy < 2; idy += num_4x4_h) {
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for (idx = 0; idx < 2; idx += num_4x4_w) {
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const int ib = idy * 2 + idx;
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const MB_PREDICTION_MODE A = above_block_mode(m, above_mi, ib);
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const MB_PREDICTION_MODE L = (xd->left_available || idx) ?
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left_block_mode(m, left_mi, ib) : DC_PRED;
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const MB_PREDICTION_MODE b_mode = read_intra_mode(r,
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vp9_kf_y_mode_prob[A][L]);
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m->bmi[ib].as_mode = b_mode;
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if (num_4x4_h == 2)
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m->bmi[ib + 2].as_mode = b_mode;
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if (num_4x4_w == 2)
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m->bmi[ib + 1].as_mode = b_mode;
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}
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}
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mbmi->mode = m->bmi[3].as_mode;
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}
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mbmi->uv_mode = read_intra_mode(r, vp9_kf_uv_mode_prob[mbmi->mode]);
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}
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static int read_mv_component(vp9_reader *r,
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const nmv_component *mvcomp, int usehp) {
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int mag, d, fr, hp;
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const int sign = vp9_read(r, mvcomp->sign);
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const int mv_class = treed_read(r, vp9_mv_class_tree, mvcomp->classes);
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const int class0 = mv_class == MV_CLASS_0;
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// Integer part
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if (class0) {
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d = treed_read(r, vp9_mv_class0_tree, mvcomp->class0);
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} else {
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int i;
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const int n = mv_class + CLASS0_BITS - 1; // number of bits
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d = 0;
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for (i = 0; i < n; ++i)
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d |= vp9_read(r, mvcomp->bits[i]) << i;
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}
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// Fractional part
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fr = treed_read(r, vp9_mv_fp_tree,
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class0 ? mvcomp->class0_fp[d] : mvcomp->fp);
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// High precision part (if hp is not used, the default value of the hp is 1)
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hp = usehp ? vp9_read(r, class0 ? mvcomp->class0_hp : mvcomp->hp)
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: 1;
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// Result
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mag = vp9_get_mv_mag(mv_class, (d << 3) | (fr << 1) | hp) + 1;
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return sign ? -mag : mag;
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}
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static INLINE void read_mv(vp9_reader *r, MV *mv, const MV *ref,
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const nmv_context *ctx,
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nmv_context_counts *counts, int allow_hp) {
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const MV_JOINT_TYPE j = treed_read(r, vp9_mv_joint_tree, ctx->joints);
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const int use_hp = allow_hp && vp9_use_mv_hp(ref);
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MV diff = {0, 0};
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if (mv_joint_vertical(j))
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diff.row = read_mv_component(r, &ctx->comps[0], use_hp);
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if (mv_joint_horizontal(j))
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diff.col = read_mv_component(r, &ctx->comps[1], use_hp);
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vp9_inc_mv(&diff, counts);
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mv->row = ref->row + diff.row;
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mv->col = ref->col + diff.col;
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}
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static void update_mv(vp9_reader *r, vp9_prob *p) {
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if (vp9_read(r, NMV_UPDATE_PROB))
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*p = (vp9_read_literal(r, 7) << 1) | 1;
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}
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static void read_mv_probs(vp9_reader *r, nmv_context *mvc, int allow_hp) {
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int i, j, k;
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for (j = 0; j < MV_JOINTS - 1; ++j)
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update_mv(r, &mvc->joints[j]);
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for (i = 0; i < 2; ++i) {
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nmv_component *const comp = &mvc->comps[i];
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update_mv(r, &comp->sign);
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for (j = 0; j < MV_CLASSES - 1; ++j)
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update_mv(r, &comp->classes[j]);
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for (j = 0; j < CLASS0_SIZE - 1; ++j)
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update_mv(r, &comp->class0[j]);
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for (j = 0; j < MV_OFFSET_BITS; ++j)
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update_mv(r, &comp->bits[j]);
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}
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for (i = 0; i < 2; ++i) {
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nmv_component *const comp = &mvc->comps[i];
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for (j = 0; j < CLASS0_SIZE; ++j)
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for (k = 0; k < 3; ++k)
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update_mv(r, &comp->class0_fp[j][k]);
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for (j = 0; j < 3; ++j)
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update_mv(r, &comp->fp[j]);
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}
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if (allow_hp) {
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for (i = 0; i < 2; ++i) {
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update_mv(r, &mvc->comps[i].class0_hp);
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update_mv(r, &mvc->comps[i].hp);
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}
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}
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}
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// Read the referncence frame
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static void read_ref_frames(VP9D_COMP *pbi, vp9_reader *r,
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int segment_id, MV_REFERENCE_FRAME ref_frame[2]) {
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VP9_COMMON *const cm = &pbi->common;
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MACROBLOCKD *const xd = &pbi->mb;
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FRAME_CONTEXT *const fc = &cm->fc;
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FRAME_COUNTS *const counts = &cm->counts;
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if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) {
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ref_frame[0] = vp9_get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME);
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ref_frame[1] = NONE;
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} else {
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const int comp_ctx = vp9_get_pred_context_comp_inter_inter(cm, xd);
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int is_comp;
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if (cm->comp_pred_mode == HYBRID_PREDICTION) {
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is_comp = vp9_read(r, fc->comp_inter_prob[comp_ctx]);
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counts->comp_inter[comp_ctx][is_comp]++;
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} else {
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is_comp = cm->comp_pred_mode == COMP_PREDICTION_ONLY;
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}
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// FIXME(rbultje) I'm pretty sure this breaks segmentation ref frame coding
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if (is_comp) {
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const int fix_ref_idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref];
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const int ref_ctx = vp9_get_pred_context_comp_ref_p(cm, xd);
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const int b = vp9_read(r, fc->comp_ref_prob[ref_ctx]);
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counts->comp_ref[ref_ctx][b]++;
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ref_frame[fix_ref_idx] = cm->comp_fixed_ref;
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ref_frame[!fix_ref_idx] = cm->comp_var_ref[b];
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} else {
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const int ctx0 = vp9_get_pred_context_single_ref_p1(xd);
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const int bit0 = vp9_read(r, fc->single_ref_prob[ctx0][0]);
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++counts->single_ref[ctx0][0][bit0];
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if (bit0) {
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const int ctx1 = vp9_get_pred_context_single_ref_p2(xd);
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const int bit1 = vp9_read(r, fc->single_ref_prob[ctx1][1]);
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ref_frame[0] = bit1 ? ALTREF_FRAME : GOLDEN_FRAME;
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++counts->single_ref[ctx1][1][bit1];
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} else {
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ref_frame[0] = LAST_FRAME;
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}
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ref_frame[1] = NONE;
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}
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}
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}
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static void read_switchable_interp_probs(FRAME_CONTEXT *fc, vp9_reader *r) {
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int i, j;
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for (j = 0; j < SWITCHABLE_FILTERS + 1; ++j)
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for (i = 0; i < SWITCHABLE_FILTERS - 1; ++i)
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if (vp9_read(r, MODE_UPDATE_PROB))
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vp9_diff_update_prob(r, &fc->switchable_interp_prob[j][i]);
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}
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static void read_inter_mode_probs(FRAME_CONTEXT *fc, vp9_reader *r) {
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int i, j;
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for (i = 0; i < INTER_MODE_CONTEXTS; ++i)
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for (j = 0; j < INTER_MODES - 1; ++j)
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if (vp9_read(r, MODE_UPDATE_PROB))
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vp9_diff_update_prob(r, &fc->inter_mode_probs[i][j]);
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}
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static INLINE COMPPREDMODE_TYPE read_comp_pred_mode(vp9_reader *r) {
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COMPPREDMODE_TYPE mode = vp9_read_bit(r);
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if (mode)
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mode += vp9_read_bit(r);
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return mode;
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}
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static INLINE INTERPOLATIONFILTERTYPE read_switchable_filter_type(
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VP9D_COMP *pbi, vp9_reader *r) {
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VP9_COMMON *const cm = &pbi->common;
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MACROBLOCKD *const xd = &pbi->mb;
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const int ctx = vp9_get_pred_context_switchable_interp(xd);
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const int type = treed_read(r, vp9_switchable_interp_tree,
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cm->fc.switchable_interp_prob[ctx]);
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++cm->counts.switchable_interp[ctx][type];
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return type;
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}
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static void read_intra_block_mode_info(VP9D_COMP *pbi, MODE_INFO *mi,
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vp9_reader *r) {
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VP9_COMMON *const cm = &pbi->common;
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MB_MODE_INFO *const mbmi = &mi->mbmi;
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const BLOCK_SIZE bsize = mi->mbmi.sb_type;
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mbmi->ref_frame[0] = INTRA_FRAME;
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mbmi->ref_frame[1] = NONE;
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if (bsize >= BLOCK_8X8) {
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mbmi->mode = read_intra_mode_y(cm, r, size_group_lookup[bsize]);
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} else {
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// Only 4x4, 4x8, 8x4 blocks
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const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2
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const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2
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int idx, idy;
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for (idy = 0; idy < 2; idy += num_4x4_h) {
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for (idx = 0; idx < 2; idx += num_4x4_w) {
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const int ib = idy * 2 + idx;
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const int b_mode = read_intra_mode_y(cm, r, 0);
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mi->bmi[ib].as_mode = b_mode;
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if (num_4x4_h == 2)
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mi->bmi[ib + 2].as_mode = b_mode;
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if (num_4x4_w == 2)
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mi->bmi[ib + 1].as_mode = b_mode;
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}
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}
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mbmi->mode = mi->bmi[3].as_mode;
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}
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mbmi->uv_mode = read_intra_mode_uv(cm, r, mbmi->mode);
|
|
}
|
|
|
|
static int read_is_inter_block(VP9D_COMP *pbi, int segment_id, vp9_reader *r) {
|
|
VP9_COMMON *const cm = &pbi->common;
|
|
MACROBLOCKD *const xd = &pbi->mb;
|
|
|
|
if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) {
|
|
return vp9_get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME) !=
|
|
INTRA_FRAME;
|
|
} else {
|
|
const int ctx = vp9_get_pred_context_intra_inter(xd);
|
|
const int is_inter = vp9_read(r, vp9_get_pred_prob_intra_inter(cm, xd));
|
|
++cm->counts.intra_inter[ctx][is_inter];
|
|
return is_inter;
|
|
}
|
|
}
|
|
|
|
static void read_inter_block_mode_info(VP9D_COMP *pbi, MODE_INFO *mi,
|
|
int mi_row, int mi_col, vp9_reader *r) {
|
|
VP9_COMMON *const cm = &pbi->common;
|
|
MACROBLOCKD *const xd = &pbi->mb;
|
|
nmv_context *const nmvc = &cm->fc.nmvc;
|
|
MB_MODE_INFO *const mbmi = &mi->mbmi;
|
|
int_mv *const mv0 = &mbmi->mv[0];
|
|
int_mv *const mv1 = &mbmi->mv[1];
|
|
const BLOCK_SIZE bsize = mbmi->sb_type;
|
|
const int allow_hp = xd->allow_high_precision_mv;
|
|
|
|
int_mv nearest[2], nearmv[2], best[2];
|
|
uint8_t inter_mode_ctx;
|
|
MV_REFERENCE_FRAME ref0;
|
|
int is_compound;
|
|
|
|
mbmi->uv_mode = DC_PRED;
|
|
read_ref_frames(pbi, r, mbmi->segment_id, mbmi->ref_frame);
|
|
ref0 = mbmi->ref_frame[0];
|
|
is_compound = has_second_ref(mbmi);
|
|
|
|
vp9_find_mv_refs(cm, xd, mi, xd->last_mi, ref0, mbmi->ref_mvs[ref0],
|
|
mi_row, mi_col);
|
|
|
|
inter_mode_ctx = mbmi->mode_context[ref0];
|
|
|
|
if (vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) {
|
|
mbmi->mode = ZEROMV;
|
|
assert(bsize >= BLOCK_8X8);
|
|
} else {
|
|
if (bsize >= BLOCK_8X8)
|
|
mbmi->mode = read_inter_mode(cm, r, inter_mode_ctx);
|
|
}
|
|
|
|
// nearest, nearby
|
|
if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) {
|
|
vp9_find_best_ref_mvs(xd, mbmi->ref_mvs[ref0], &nearest[0], &nearmv[0]);
|
|
best[0].as_int = nearest[0].as_int;
|
|
}
|
|
|
|
if (is_compound) {
|
|
const MV_REFERENCE_FRAME ref1 = mbmi->ref_frame[1];
|
|
vp9_find_mv_refs(cm, xd, mi, xd->last_mi,
|
|
ref1, mbmi->ref_mvs[ref1], mi_row, mi_col);
|
|
|
|
if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) {
|
|
vp9_find_best_ref_mvs(xd, mbmi->ref_mvs[ref1], &nearest[1], &nearmv[1]);
|
|
best[1].as_int = nearest[1].as_int;
|
|
}
|
|
}
|
|
|
|
mbmi->interp_filter = cm->mcomp_filter_type == SWITCHABLE
|
|
? read_switchable_filter_type(pbi, r)
|
|
: cm->mcomp_filter_type;
|
|
|
|
if (bsize < BLOCK_8X8) {
|
|
const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2
|
|
const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2
|
|
int idx, idy;
|
|
int b_mode;
|
|
for (idy = 0; idy < 2; idy += num_4x4_h) {
|
|
for (idx = 0; idx < 2; idx += num_4x4_w) {
|
|
int_mv block[2];
|
|
const int j = idy * 2 + idx;
|
|
b_mode = read_inter_mode(cm, r, inter_mode_ctx);
|
|
|
|
if (b_mode == NEARESTMV || b_mode == NEARMV) {
|
|
vp9_append_sub8x8_mvs_for_idx(cm, xd, &nearest[0],
|
|
&nearmv[0], j, 0,
|
|
mi_row, mi_col);
|
|
|
|
if (is_compound)
|
|
vp9_append_sub8x8_mvs_for_idx(cm, xd, &nearest[1],
|
|
&nearmv[1], j, 1,
|
|
mi_row, mi_col);
|
|
}
|
|
|
|
switch (b_mode) {
|
|
case NEWMV:
|
|
read_mv(r, &block[0].as_mv, &best[0].as_mv, nmvc, &cm->counts.mv,
|
|
allow_hp);
|
|
if (is_compound)
|
|
read_mv(r, &block[1].as_mv, &best[1].as_mv, nmvc, &cm->counts.mv,
|
|
allow_hp);
|
|
break;
|
|
case NEARESTMV:
|
|
block[0].as_int = nearest[0].as_int;
|
|
if (is_compound)
|
|
block[1].as_int = nearest[1].as_int;
|
|
break;
|
|
case NEARMV:
|
|
block[0].as_int = nearmv[0].as_int;
|
|
if (is_compound)
|
|
block[1].as_int = nearmv[1].as_int;
|
|
break;
|
|
case ZEROMV:
|
|
block[0].as_int = 0;
|
|
if (is_compound)
|
|
block[1].as_int = 0;
|
|
break;
|
|
default:
|
|
assert(!"Invalid inter mode value");
|
|
}
|
|
mi->bmi[j].as_mv[0].as_int = block[0].as_int;
|
|
assert(block[0].as_mv.row < MV_UPP && block[0].as_mv.row > MV_LOW);
|
|
assert(block[0].as_mv.col < MV_UPP && block[0].as_mv.col > MV_LOW);
|
|
|
|
if (is_compound) {
|
|
mi->bmi[j].as_mv[1].as_int = block[1].as_int;
|
|
assert(block[1].as_mv.row < MV_UPP && block[1].as_mv.row > MV_LOW);
|
|
assert(block[1].as_mv.col < MV_UPP && block[1].as_mv.col > MV_LOW);
|
|
}
|
|
|
|
if (num_4x4_h == 2)
|
|
mi->bmi[j + 2] = mi->bmi[j];
|
|
if (num_4x4_w == 2)
|
|
mi->bmi[j + 1] = mi->bmi[j];
|
|
}
|
|
}
|
|
|
|
mi->mbmi.mode = b_mode;
|
|
mv0->as_int = mi->bmi[3].as_mv[0].as_int;
|
|
mv1->as_int = mi->bmi[3].as_mv[1].as_int;
|
|
} else {
|
|
switch (mbmi->mode) {
|
|
case NEARMV:
|
|
mv0->as_int = nearmv[0].as_int;
|
|
if (is_compound)
|
|
mv1->as_int = nearmv[1].as_int;
|
|
break;
|
|
|
|
case NEARESTMV:
|
|
mv0->as_int = nearest[0].as_int;
|
|
if (is_compound)
|
|
mv1->as_int = nearest[1].as_int;
|
|
break;
|
|
|
|
case ZEROMV:
|
|
mv0->as_int = 0;
|
|
if (is_compound)
|
|
mv1->as_int = 0;
|
|
break;
|
|
|
|
case NEWMV:
|
|
read_mv(r, &mv0->as_mv, &best[0].as_mv, nmvc, &cm->counts.mv, allow_hp);
|
|
if (is_compound)
|
|
read_mv(r, &mv1->as_mv, &best[1].as_mv, nmvc, &cm->counts.mv,
|
|
allow_hp);
|
|
break;
|
|
default:
|
|
assert(!"Invalid inter mode value");
|
|
}
|
|
assert(mv0->as_mv.row < MV_UPP && mv0->as_mv.row > MV_LOW);
|
|
assert(mv0->as_mv.col < MV_UPP && mv0->as_mv.col > MV_LOW);
|
|
if (is_compound) {
|
|
assert(mv1->as_mv.row < MV_UPP && mv1->as_mv.row > MV_LOW);
|
|
assert(mv1->as_mv.col < MV_UPP && mv1->as_mv.col > MV_LOW);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void read_inter_frame_mode_info(VP9D_COMP *pbi, MODE_INFO *mi,
|
|
int mi_row, int mi_col, vp9_reader *r) {
|
|
VP9_COMMON *const cm = &pbi->common;
|
|
MB_MODE_INFO *const mbmi = &mi->mbmi;
|
|
int inter_block;
|
|
|
|
mbmi->mv[0].as_int = 0;
|
|
mbmi->mv[1].as_int = 0;
|
|
mbmi->segment_id = read_inter_segment_id(pbi, mi_row, mi_col, r);
|
|
mbmi->skip_coeff = read_skip_coeff(pbi, mbmi->segment_id, r);
|
|
inter_block = read_is_inter_block(pbi, mbmi->segment_id, r);
|
|
mbmi->tx_size = read_tx_size(pbi, cm->tx_mode, mbmi->sb_type,
|
|
!mbmi->skip_coeff || !inter_block, r);
|
|
|
|
if (inter_block)
|
|
read_inter_block_mode_info(pbi, mi, mi_row, mi_col, r);
|
|
else
|
|
read_intra_block_mode_info(pbi, mi, r);
|
|
}
|
|
|
|
static void read_comp_pred(VP9_COMMON *cm, vp9_reader *r) {
|
|
int i;
|
|
|
|
cm->comp_pred_mode = cm->allow_comp_inter_inter ? read_comp_pred_mode(r)
|
|
: SINGLE_PREDICTION_ONLY;
|
|
|
|
if (cm->comp_pred_mode == HYBRID_PREDICTION)
|
|
for (i = 0; i < COMP_INTER_CONTEXTS; i++)
|
|
if (vp9_read(r, MODE_UPDATE_PROB))
|
|
vp9_diff_update_prob(r, &cm->fc.comp_inter_prob[i]);
|
|
|
|
if (cm->comp_pred_mode != COMP_PREDICTION_ONLY)
|
|
for (i = 0; i < REF_CONTEXTS; i++) {
|
|
if (vp9_read(r, MODE_UPDATE_PROB))
|
|
vp9_diff_update_prob(r, &cm->fc.single_ref_prob[i][0]);
|
|
if (vp9_read(r, MODE_UPDATE_PROB))
|
|
vp9_diff_update_prob(r, &cm->fc.single_ref_prob[i][1]);
|
|
}
|
|
|
|
if (cm->comp_pred_mode != SINGLE_PREDICTION_ONLY)
|
|
for (i = 0; i < REF_CONTEXTS; i++)
|
|
if (vp9_read(r, MODE_UPDATE_PROB))
|
|
vp9_diff_update_prob(r, &cm->fc.comp_ref_prob[i]);
|
|
}
|
|
|
|
void vp9_prepare_read_mode_info(VP9D_COMP* pbi, vp9_reader *r) {
|
|
VP9_COMMON *const cm = &pbi->common;
|
|
int k;
|
|
|
|
// TODO(jkoleszar): does this clear more than MBSKIP_CONTEXTS? Maybe remove.
|
|
// vpx_memset(cm->fc.mbskip_probs, 0, sizeof(cm->fc.mbskip_probs));
|
|
for (k = 0; k < MBSKIP_CONTEXTS; ++k)
|
|
if (vp9_read(r, MODE_UPDATE_PROB))
|
|
vp9_diff_update_prob(r, &cm->fc.mbskip_probs[k]);
|
|
|
|
if (cm->frame_type != KEY_FRAME && !cm->intra_only) {
|
|
nmv_context *const nmvc = &pbi->common.fc.nmvc;
|
|
MACROBLOCKD *const xd = &pbi->mb;
|
|
int i, j;
|
|
|
|
read_inter_mode_probs(&cm->fc, r);
|
|
|
|
if (cm->mcomp_filter_type == SWITCHABLE)
|
|
read_switchable_interp_probs(&cm->fc, r);
|
|
|
|
for (i = 0; i < INTRA_INTER_CONTEXTS; i++)
|
|
if (vp9_read(r, MODE_UPDATE_PROB))
|
|
vp9_diff_update_prob(r, &cm->fc.intra_inter_prob[i]);
|
|
|
|
read_comp_pred(cm, r);
|
|
|
|
for (j = 0; j < BLOCK_SIZE_GROUPS; j++)
|
|
for (i = 0; i < INTRA_MODES - 1; ++i)
|
|
if (vp9_read(r, MODE_UPDATE_PROB))
|
|
vp9_diff_update_prob(r, &cm->fc.y_mode_prob[j][i]);
|
|
|
|
for (j = 0; j < NUM_PARTITION_CONTEXTS; ++j)
|
|
for (i = 0; i < PARTITION_TYPES - 1; ++i)
|
|
if (vp9_read(r, MODE_UPDATE_PROB))
|
|
vp9_diff_update_prob(r, &cm->fc.partition_prob[INTER_FRAME][j][i]);
|
|
|
|
read_mv_probs(r, nmvc, xd->allow_high_precision_mv);
|
|
}
|
|
}
|
|
|
|
void vp9_read_mode_info(VP9D_COMP* pbi, int mi_row, int mi_col, vp9_reader *r) {
|
|
VP9_COMMON *const cm = &pbi->common;
|
|
MACROBLOCKD *const xd = &pbi->mb;
|
|
MODE_INFO *mi = xd->this_mi;
|
|
const BLOCK_SIZE bsize = mi->mbmi.sb_type;
|
|
const int bw = 1 << mi_width_log2(bsize);
|
|
const int bh = 1 << mi_height_log2(bsize);
|
|
const int y_mis = MIN(bh, cm->mi_rows - mi_row);
|
|
const int x_mis = MIN(bw, cm->mi_cols - mi_col);
|
|
int x, y, z;
|
|
|
|
if (cm->frame_type == KEY_FRAME || cm->intra_only)
|
|
read_intra_frame_mode_info(pbi, mi, mi_row, mi_col, r);
|
|
else
|
|
read_inter_frame_mode_info(pbi, mi, mi_row, mi_col, r);
|
|
|
|
for (y = 0, z = 0; y < y_mis; y++, z += cm->mode_info_stride)
|
|
for (x = !y; x < x_mis; x++) {
|
|
xd->mi_8x8[z + x] = mi;
|
|
}
|
|
}
|