1f26840fbf
This commit allows the rate-distortion optimization recursion at encoder to go down to 4x4 block size. It deprecates the use of I4X4_PRED and SPLITMV syntax elements from bit-stream writing/reading. Will remove the unused probability models in the next patch. The partition type search and bit-stream are now capable of supporting the rectangular partition of 8x8 block, i.e., 8x4 and 4x8. Need to revise the rate-distortion parts to get these two partition tested in the rd loop. Change-Id: I0dfe3b90a1507ad6138db10cc58e6e237a06a9d6
969 lines
33 KiB
C
969 lines
33 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 "vp9/decoder/vp9_treereader.h"
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#include "vp9/common/vp9_entropymv.h"
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#include "vp9/common/vp9_entropymode.h"
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#include "vp9/common/vp9_reconinter.h"
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#include "vp9/decoder/vp9_onyxd_int.h"
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#include "vp9/common/vp9_findnearmv.h"
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#include "vp9/common/vp9_common.h"
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#include "vp9/common/vp9_seg_common.h"
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#include "vp9/common/vp9_pred_common.h"
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#include "vp9/common/vp9_entropy.h"
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#include "vp9/decoder/vp9_decodemv.h"
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#include "vp9/common/vp9_mvref_common.h"
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#if CONFIG_DEBUG
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#include <assert.h>
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#endif
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// #define DEBUG_DEC_MV
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#ifdef DEBUG_DEC_MV
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int dec_mvcount = 0;
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#endif
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// #define DEC_DEBUG
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#ifdef DEC_DEBUG
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extern int dec_debug;
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#endif
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static B_PREDICTION_MODE read_bmode(vp9_reader *r, const vp9_prob *p) {
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B_PREDICTION_MODE m = treed_read(r, vp9_bmode_tree, p);
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return m;
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}
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static B_PREDICTION_MODE read_kf_bmode(vp9_reader *r, const vp9_prob *p) {
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return (B_PREDICTION_MODE)treed_read(r, vp9_kf_bmode_tree, p);
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}
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static MB_PREDICTION_MODE read_ymode(vp9_reader *r, const vp9_prob *p) {
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return (MB_PREDICTION_MODE)treed_read(r, vp9_ymode_tree, p);
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}
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static MB_PREDICTION_MODE read_sb_ymode(vp9_reader *r, const vp9_prob *p) {
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return (MB_PREDICTION_MODE)treed_read(r, vp9_sb_ymode_tree, p);
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}
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static MB_PREDICTION_MODE read_kf_sb_ymode(vp9_reader *r, const vp9_prob *p) {
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return (MB_PREDICTION_MODE)treed_read(r, vp9_uv_mode_tree, p);
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}
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static MB_PREDICTION_MODE read_kf_mb_ymode(vp9_reader *r, const vp9_prob *p) {
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return (MB_PREDICTION_MODE)treed_read(r, vp9_kf_ymode_tree, p);
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}
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static MB_PREDICTION_MODE read_uv_mode(vp9_reader *r, const vp9_prob *p) {
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return (MB_PREDICTION_MODE)treed_read(r, vp9_uv_mode_tree, p);
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}
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static int read_mb_segid(vp9_reader *r, MACROBLOCKD *xd) {
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return treed_read(r, vp9_segment_tree, xd->mb_segment_tree_probs);
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}
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static void set_segment_id(VP9_COMMON *cm, MB_MODE_INFO *mbmi,
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int mi_row, int mi_col, int segment_id) {
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const int mi_index = mi_row * cm->mi_cols + mi_col;
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const BLOCK_SIZE_TYPE sb_type = mbmi->sb_type;
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const int bw = 1 << mi_width_log2(sb_type);
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const int bh = 1 << mi_height_log2(sb_type);
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const int ymis = MIN(cm->mi_rows - mi_row, bh);
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const int xmis = MIN(cm->mi_cols - mi_col, bw);
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int x, y;
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for (y = 0; y < ymis; y++) {
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for (x = 0; x < xmis; x++) {
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const int index = mi_index + (y * cm->mi_cols + x);
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cm->last_frame_seg_map[index] = segment_id;
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}
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}
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}
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static TX_SIZE select_txfm_size(VP9_COMMON *cm, vp9_reader *r,
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int allow_16x16, int allow_32x32) {
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TX_SIZE txfm_size = vp9_read(r, cm->prob_tx[0]); // TX_4X4 or >TX_4X4
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if (txfm_size != TX_4X4 && allow_16x16) {
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txfm_size += vp9_read(r, cm->prob_tx[1]); // TX_8X8 or >TX_8X8
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if (txfm_size != TX_8X8 && allow_32x32)
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txfm_size += vp9_read(r, cm->prob_tx[2]); // TX_16X16 or >TX_16X16
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}
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return txfm_size;
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}
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static void kfread_modes(VP9D_COMP *pbi, MODE_INFO *m,
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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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const int mis = cm->mode_info_stride;
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m->mbmi.ref_frame = INTRA_FRAME;
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// Read segmentation map if it is being updated explicitly this frame
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m->mbmi.segment_id = 0;
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if (xd->segmentation_enabled && xd->update_mb_segmentation_map) {
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m->mbmi.segment_id = read_mb_segid(r, xd);
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set_segment_id(cm, &m->mbmi, mi_row, mi_col, m->mbmi.segment_id);
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}
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m->mbmi.mb_skip_coeff = vp9_segfeature_active(xd, m->mbmi.segment_id,
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SEG_LVL_SKIP);
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if (!m->mbmi.mb_skip_coeff)
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m->mbmi.mb_skip_coeff = vp9_read(r, vp9_get_pred_prob(cm, xd, PRED_MBSKIP));
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// luma mode
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#if CONFIG_AB4X4
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if (m->mbmi.sb_type >= BLOCK_SIZE_SB8X8)
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m->mbmi.mode = read_kf_sb_ymode(r,
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cm->sb_kf_ymode_prob[cm->kf_ymode_probs_index]);
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else
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m->mbmi.mode = I4X4_PRED;
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#else
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m->mbmi.mode = m->mbmi.sb_type > BLOCK_SIZE_SB8X8 ?
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read_kf_sb_ymode(r, cm->sb_kf_ymode_prob[cm->kf_ymode_probs_index]):
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read_kf_mb_ymode(r, cm->kf_ymode_prob[cm->kf_ymode_probs_index]);
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#endif
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m->mbmi.ref_frame = INTRA_FRAME;
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#if CONFIG_AB4X4
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if (m->mbmi.sb_type < BLOCK_SIZE_SB8X8) {
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#else
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if (m->mbmi.mode == I4X4_PRED) {
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#endif
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int i;
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for (i = 0; i < 4; ++i) {
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const B_PREDICTION_MODE a = above_block_mode(m, i, mis);
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const B_PREDICTION_MODE l = xd->left_available ||
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(i & 1) ?
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left_block_mode(m, i) : B_DC_PRED;
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m->bmi[i].as_mode.first = read_kf_bmode(r, cm->kf_bmode_prob[a][l]);
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}
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}
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m->mbmi.uv_mode = read_uv_mode(r, cm->kf_uv_mode_prob[m->mbmi.mode]);
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if (cm->txfm_mode == TX_MODE_SELECT &&
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!m->mbmi.mb_skip_coeff &&
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#if CONFIG_AB4X4
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m->mbmi.sb_type >= BLOCK_SIZE_SB8X8
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#else
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m->mbmi.mode != I4X4_PRED
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#endif
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) {
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const int allow_16x16 = m->mbmi.sb_type >= BLOCK_SIZE_MB16X16;
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const int allow_32x32 = m->mbmi.sb_type >= BLOCK_SIZE_SB32X32;
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m->mbmi.txfm_size = select_txfm_size(cm, r, allow_16x16, allow_32x32);
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} else if (cm->txfm_mode >= ALLOW_32X32 &&
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m->mbmi.sb_type >= BLOCK_SIZE_SB32X32) {
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m->mbmi.txfm_size = TX_32X32;
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} else if (cm->txfm_mode >= ALLOW_16X16 &&
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m->mbmi.sb_type >= BLOCK_SIZE_MB16X16 &&
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m->mbmi.mode <= TM_PRED) {
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m->mbmi.txfm_size = TX_16X16;
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} else if (cm->txfm_mode >= ALLOW_8X8 &&
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#if CONFIG_AB4X4
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m->mbmi.sb_type >= BLOCK_SIZE_SB8X8
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#else
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m->mbmi.mode != I4X4_PRED
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#endif
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) {
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m->mbmi.txfm_size = TX_8X8;
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} else {
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m->mbmi.txfm_size = TX_4X4;
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}
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}
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static int read_nmv_component(vp9_reader *r,
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int rv,
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const nmv_component *mvcomp) {
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int mag, d;
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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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if (mv_class == MV_CLASS_0) {
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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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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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mag = vp9_get_mv_mag(mv_class, d << 3);
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return sign ? -(mag + 8) : (mag + 8);
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}
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static int read_nmv_component_fp(vp9_reader *r,
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int v,
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int rv,
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const nmv_component *mvcomp,
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int usehp) {
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const int sign = v < 0;
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int mag = ((sign ? -v : v) - 1) & ~7; // magnitude - 1
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int offset;
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const int mv_class = vp9_get_mv_class(mag, &offset);
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const int f = mv_class == MV_CLASS_0 ?
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treed_read(r, vp9_mv_fp_tree, mvcomp->class0_fp[offset >> 3]):
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treed_read(r, vp9_mv_fp_tree, mvcomp->fp);
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offset += f << 1;
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if (usehp) {
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const vp9_prob p = mv_class == MV_CLASS_0 ? mvcomp->class0_hp : mvcomp->hp;
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offset += vp9_read(r, p);
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} else {
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offset += 1; // If hp is not used, the default value of the hp bit is 1
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}
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mag = vp9_get_mv_mag(mv_class, offset);
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return sign ? -(mag + 1) : (mag + 1);
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}
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static void read_nmv(vp9_reader *r, MV *mv, const MV *ref,
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const nmv_context *mvctx) {
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const MV_JOINT_TYPE j = treed_read(r, vp9_mv_joint_tree, mvctx->joints);
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mv->row = mv->col = 0;
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if (mv_joint_vertical(j))
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mv->row = read_nmv_component(r, ref->row, &mvctx->comps[0]);
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if (mv_joint_horizontal(j))
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mv->col = read_nmv_component(r, ref->col, &mvctx->comps[1]);
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}
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static void read_nmv_fp(vp9_reader *r, MV *mv, const MV *ref,
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const nmv_context *mvctx, int usehp) {
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const MV_JOINT_TYPE j = vp9_get_mv_joint(mv);
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usehp = usehp && vp9_use_nmv_hp(ref);
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if (mv_joint_vertical(j))
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mv->row = read_nmv_component_fp(r, mv->row, ref->row, &mvctx->comps[0],
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usehp);
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if (mv_joint_horizontal(j))
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mv->col = read_nmv_component_fp(r, mv->col, ref->col, &mvctx->comps[1],
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usehp);
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}
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static void update_nmv(vp9_reader *r, vp9_prob *const p,
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const vp9_prob upd_p) {
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if (vp9_read(r, upd_p)) {
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#ifdef LOW_PRECISION_MV_UPDATE
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*p = (vp9_read_literal(r, 7) << 1) | 1;
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#else
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*p = (vp9_read_literal(r, 8));
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#endif
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}
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}
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static void read_nmvprobs(vp9_reader *r, nmv_context *mvctx,
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int usehp) {
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int i, j, k;
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#ifdef MV_GROUP_UPDATE
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if (!vp9_read_bit(r))
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return;
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#endif
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for (j = 0; j < MV_JOINTS - 1; ++j)
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update_nmv(r, &mvctx->joints[j], VP9_NMV_UPDATE_PROB);
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for (i = 0; i < 2; ++i) {
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update_nmv(r, &mvctx->comps[i].sign, VP9_NMV_UPDATE_PROB);
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for (j = 0; j < MV_CLASSES - 1; ++j)
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update_nmv(r, &mvctx->comps[i].classes[j], VP9_NMV_UPDATE_PROB);
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for (j = 0; j < CLASS0_SIZE - 1; ++j)
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update_nmv(r, &mvctx->comps[i].class0[j], VP9_NMV_UPDATE_PROB);
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for (j = 0; j < MV_OFFSET_BITS; ++j)
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update_nmv(r, &mvctx->comps[i].bits[j], VP9_NMV_UPDATE_PROB);
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}
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for (i = 0; i < 2; ++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_nmv(r, &mvctx->comps[i].class0_fp[j][k], VP9_NMV_UPDATE_PROB);
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for (j = 0; j < 3; ++j)
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update_nmv(r, &mvctx->comps[i].fp[j], VP9_NMV_UPDATE_PROB);
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}
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if (usehp) {
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for (i = 0; i < 2; ++i) {
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update_nmv(r, &mvctx->comps[i].class0_hp, VP9_NMV_UPDATE_PROB);
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update_nmv(r, &mvctx->comps[i].hp, VP9_NMV_UPDATE_PROB);
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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 MV_REFERENCE_FRAME read_ref_frame(VP9D_COMP *pbi,
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vp9_reader *r,
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int segment_id) {
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MV_REFERENCE_FRAME ref_frame;
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VP9_COMMON *const cm = &pbi->common;
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MACROBLOCKD *const xd = &pbi->mb;
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int seg_ref_count = 0;
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const int seg_ref_active = vp9_segfeature_active(xd, segment_id,
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SEG_LVL_REF_FRAME);
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const int intra = vp9_check_segref(xd, segment_id, INTRA_FRAME);
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const int last = vp9_check_segref(xd, segment_id, LAST_FRAME);
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const int golden = vp9_check_segref(xd, segment_id, GOLDEN_FRAME);
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const int altref = vp9_check_segref(xd, segment_id, ALTREF_FRAME);
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// If segment coding enabled does the segment allow for more than one
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// possible reference frame
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if (seg_ref_active)
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seg_ref_count = intra + last + golden + altref;
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// Segment reference frame features not available or allows for
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// multiple reference frame options
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if (!seg_ref_active || seg_ref_count > 1) {
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// Values used in prediction model coding
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MV_REFERENCE_FRAME pred_ref;
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// Get the context probability the prediction flag
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vp9_prob pred_prob = vp9_get_pred_prob(cm, xd, PRED_REF);
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// Read the prediction status flag
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unsigned char prediction_flag = vp9_read(r, pred_prob);
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// Store the prediction flag.
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vp9_set_pred_flag(xd, PRED_REF, prediction_flag);
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// Get the predicted reference frame.
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pred_ref = vp9_get_pred_ref(cm, xd);
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// If correctly predicted then use the predicted value
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if (prediction_flag) {
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ref_frame = pred_ref;
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} else {
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// decode the explicitly coded value
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vp9_prob mod_refprobs[PREDICTION_PROBS];
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vpx_memcpy(mod_refprobs, cm->mod_refprobs[pred_ref],
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sizeof(mod_refprobs));
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// If segment coding enabled blank out options that cant occur by
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// setting the branch probability to 0.
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if (seg_ref_active) {
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mod_refprobs[INTRA_FRAME] *= intra;
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mod_refprobs[LAST_FRAME] *= last;
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mod_refprobs[GOLDEN_FRAME] *= golden * altref;
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}
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// Default to INTRA_FRAME (value 0)
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ref_frame = INTRA_FRAME;
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// Do we need to decode the Intra/Inter branch
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if (mod_refprobs[0])
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ref_frame = vp9_read(r, mod_refprobs[0]);
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else
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ref_frame++;
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if (ref_frame) {
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// Do we need to decode the Last/Gf_Arf branch
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if (mod_refprobs[1])
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ref_frame += vp9_read(r, mod_refprobs[1]);
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else
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ref_frame++;
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if (ref_frame > 1) {
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// Do we need to decode the GF/Arf branch
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if (mod_refprobs[2]) {
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ref_frame += vp9_read(r, mod_refprobs[2]);
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} else {
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if (seg_ref_active)
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ref_frame = pred_ref == GOLDEN_FRAME || !golden ? ALTREF_FRAME
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: GOLDEN_FRAME;
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else
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ref_frame = pred_ref == GOLDEN_FRAME ? ALTREF_FRAME
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: GOLDEN_FRAME;
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}
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}
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}
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}
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} else {
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// Segment reference frame features are enabled
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// The reference frame for the mb is considered as correclty predicted
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// if it is signaled at the segment level for the purposes of the
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// common prediction model
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vp9_set_pred_flag(xd, PRED_REF, 1);
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ref_frame = vp9_get_pred_ref(cm, xd);
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}
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return ref_frame;
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}
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static MB_PREDICTION_MODE read_sb_mv_ref(vp9_reader *r, const vp9_prob *p) {
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return (MB_PREDICTION_MODE) treed_read(r, vp9_sb_mv_ref_tree, p);
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}
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static MB_PREDICTION_MODE read_mv_ref(vp9_reader *r, const vp9_prob *p) {
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return (MB_PREDICTION_MODE) treed_read(r, vp9_mv_ref_tree, p);
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|
}
|
|
|
|
static B_PREDICTION_MODE read_sub_mv_ref(vp9_reader *r, const vp9_prob *p) {
|
|
return (B_PREDICTION_MODE) treed_read(r, vp9_sub_mv_ref_tree, p);
|
|
}
|
|
|
|
#ifdef VPX_MODE_COUNT
|
|
unsigned int vp9_mv_cont_count[5][4] = {
|
|
{ 0, 0, 0, 0 },
|
|
{ 0, 0, 0, 0 },
|
|
{ 0, 0, 0, 0 },
|
|
{ 0, 0, 0, 0 },
|
|
{ 0, 0, 0, 0 }
|
|
};
|
|
#endif
|
|
|
|
static void read_switchable_interp_probs(VP9D_COMP* const pbi, vp9_reader *r) {
|
|
VP9_COMMON *const cm = &pbi->common;
|
|
int i, j;
|
|
for (j = 0; j < VP9_SWITCHABLE_FILTERS + 1; ++j)
|
|
for (i = 0; i < VP9_SWITCHABLE_FILTERS - 1; ++i)
|
|
cm->fc.switchable_interp_prob[j][i] = vp9_read_prob(r);
|
|
}
|
|
|
|
static INLINE COMPPREDMODE_TYPE read_comp_pred_mode(vp9_reader *r) {
|
|
COMPPREDMODE_TYPE mode = vp9_read_bit(r);
|
|
if (mode)
|
|
mode += vp9_read_bit(r);
|
|
return mode;
|
|
}
|
|
|
|
static void mb_mode_mv_init(VP9D_COMP *pbi, vp9_reader *r) {
|
|
VP9_COMMON *const cm = &pbi->common;
|
|
|
|
if (cm->frame_type == KEY_FRAME) {
|
|
if (!cm->kf_ymode_probs_update)
|
|
cm->kf_ymode_probs_index = vp9_read_literal(r, 3);
|
|
} else {
|
|
nmv_context *const nmvc = &pbi->common.fc.nmvc;
|
|
MACROBLOCKD *const xd = &pbi->mb;
|
|
int i, j;
|
|
|
|
if (cm->mcomp_filter_type == SWITCHABLE)
|
|
read_switchable_interp_probs(pbi, r);
|
|
|
|
// Baseline probabilities for decoding reference frame
|
|
cm->prob_intra_coded = vp9_read_prob(r);
|
|
cm->prob_last_coded = vp9_read_prob(r);
|
|
cm->prob_gf_coded = vp9_read_prob(r);
|
|
|
|
// Computes a modified set of probabilities for use when reference
|
|
// frame prediction fails.
|
|
vp9_compute_mod_refprobs(cm);
|
|
|
|
cm->comp_pred_mode = read_comp_pred_mode(r);
|
|
if (cm->comp_pred_mode == HYBRID_PREDICTION)
|
|
for (i = 0; i < COMP_PRED_CONTEXTS; i++)
|
|
cm->prob_comppred[i] = vp9_read_prob(r);
|
|
|
|
// VP9_YMODES
|
|
if (vp9_read_bit(r))
|
|
for (i = 0; i < VP9_YMODES - 1; ++i)
|
|
cm->fc.ymode_prob[i] = vp9_read_prob(r);
|
|
|
|
// VP9_I32X32_MODES
|
|
if (vp9_read_bit(r))
|
|
for (i = 0; i < VP9_I32X32_MODES - 1; ++i)
|
|
cm->fc.sb_ymode_prob[i] = vp9_read_prob(r);
|
|
|
|
for (j = 0; j < NUM_PARTITION_CONTEXTS; ++j)
|
|
if (vp9_read_bit(r))
|
|
for (i = 0; i < PARTITION_TYPES - 1; ++i)
|
|
cm->fc.partition_prob[j][i] = vp9_read_prob(r);
|
|
|
|
read_nmvprobs(r, nmvc, xd->allow_high_precision_mv);
|
|
}
|
|
}
|
|
|
|
// This function either reads the segment id for the current macroblock from
|
|
// the bitstream or if the value is temporally predicted asserts the predicted
|
|
// value
|
|
static int read_mb_segment_id(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 *const mi = xd->mode_info_context;
|
|
MB_MODE_INFO *const mbmi = &mi->mbmi;
|
|
|
|
if (!xd->segmentation_enabled)
|
|
return 0; // Default for disabled segmentation
|
|
|
|
if (xd->update_mb_segmentation_map) {
|
|
int segment_id;
|
|
|
|
if (cm->temporal_update) {
|
|
// Temporal coding of the segment id for this mb is enabled.
|
|
// Get the context based probability for reading the
|
|
// prediction status flag
|
|
const vp9_prob pred_prob = vp9_get_pred_prob(cm, xd, PRED_SEG_ID);
|
|
const int pred_flag = vp9_read(r, pred_prob);
|
|
vp9_set_pred_flag(xd, PRED_SEG_ID, pred_flag);
|
|
|
|
// If the value is flagged as correctly predicted
|
|
// then use the predicted value, otherwise decode it explicitly
|
|
segment_id = pred_flag ? vp9_get_pred_mi_segid(cm, mbmi->sb_type,
|
|
mi_row, mi_col)
|
|
: read_mb_segid(r, xd);
|
|
} else {
|
|
segment_id = read_mb_segid(r, xd); // Normal unpredicted coding mode
|
|
}
|
|
|
|
set_segment_id(cm, mbmi, mi_row, mi_col, segment_id); // Side effect
|
|
return segment_id;
|
|
} else {
|
|
return vp9_get_pred_mi_segid(cm, mbmi->sb_type, mi_row, mi_col);
|
|
}
|
|
}
|
|
|
|
|
|
static INLINE void assign_and_clamp_mv(int_mv *dst, const int_mv *src,
|
|
int mb_to_left_edge,
|
|
int mb_to_right_edge,
|
|
int mb_to_top_edge,
|
|
int mb_to_bottom_edge) {
|
|
dst->as_int = src->as_int;
|
|
clamp_mv(dst, mb_to_left_edge, mb_to_right_edge, mb_to_top_edge,
|
|
mb_to_bottom_edge);
|
|
}
|
|
|
|
static INLINE void process_mv(vp9_reader *r, MV *mv, const MV *ref,
|
|
const nmv_context *nmvc,
|
|
nmv_context_counts *mvctx,
|
|
int usehp) {
|
|
read_nmv(r, mv, ref, nmvc);
|
|
read_nmv_fp(r, mv, ref, nmvc, usehp);
|
|
vp9_increment_nmv(mv, ref, mvctx, usehp);
|
|
mv->row += ref->row;
|
|
mv->col += ref->col;
|
|
}
|
|
|
|
static INLINE INTERPOLATIONFILTERTYPE read_switchable_filter_type(
|
|
VP9D_COMP *pbi, vp9_reader *r) {
|
|
const int index = treed_read(r, vp9_switchable_interp_tree,
|
|
vp9_get_pred_probs(&pbi->common, &pbi->mb,
|
|
PRED_SWITCHABLE_INTERP));
|
|
return vp9_switchable_interp[index];
|
|
}
|
|
|
|
static void read_mb_modes_mv(VP9D_COMP *pbi, MODE_INFO *mi, MB_MODE_INFO *mbmi,
|
|
MODE_INFO *prev_mi,
|
|
int mi_row, int mi_col,
|
|
vp9_reader *r) {
|
|
VP9_COMMON *const cm = &pbi->common;
|
|
nmv_context *const nmvc = &cm->fc.nmvc;
|
|
const int mis = cm->mode_info_stride;
|
|
MACROBLOCKD *const xd = &pbi->mb;
|
|
|
|
int_mv *const mv0 = &mbmi->mv[0];
|
|
int_mv *const mv1 = &mbmi->mv[1];
|
|
const int bw = 1 << mi_width_log2(mi->mbmi.sb_type);
|
|
const int bh = 1 << mi_height_log2(mi->mbmi.sb_type);
|
|
|
|
const int use_prev_in_find_mv_refs = cm->width == cm->last_width &&
|
|
cm->height == cm->last_height &&
|
|
!cm->error_resilient_mode &&
|
|
cm->last_show_frame;
|
|
|
|
int mb_to_left_edge, mb_to_right_edge, mb_to_top_edge, mb_to_bottom_edge;
|
|
|
|
mbmi->need_to_clamp_mvs = 0;
|
|
mbmi->need_to_clamp_secondmv = 0;
|
|
mbmi->second_ref_frame = NONE;
|
|
|
|
// Make sure the MACROBLOCKD mode info pointer is pointed at the
|
|
// correct entry for the current macroblock.
|
|
xd->mode_info_context = mi;
|
|
xd->prev_mode_info_context = prev_mi;
|
|
|
|
// Distance of Mb to the various image edges.
|
|
// These specified to 8th pel as they are always compared to MV values
|
|
// that are in 1/8th pel units
|
|
set_mi_row_col(cm, xd, mi_row, bh, mi_col, bw);
|
|
|
|
mb_to_top_edge = xd->mb_to_top_edge - LEFT_TOP_MARGIN;
|
|
mb_to_bottom_edge = xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN;
|
|
mb_to_left_edge = xd->mb_to_left_edge - LEFT_TOP_MARGIN;
|
|
mb_to_right_edge = xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN;
|
|
|
|
// Read the macroblock segment id.
|
|
mbmi->segment_id = read_mb_segment_id(pbi, mi_row, mi_col, r);
|
|
|
|
mbmi->mb_skip_coeff = vp9_segfeature_active(xd, mbmi->segment_id,
|
|
SEG_LVL_SKIP);
|
|
if (!mbmi->mb_skip_coeff)
|
|
mbmi->mb_skip_coeff = vp9_read(r, vp9_get_pred_prob(cm, xd, PRED_MBSKIP));
|
|
|
|
// Read the reference frame
|
|
mbmi->ref_frame = read_ref_frame(pbi, r, mbmi->segment_id);
|
|
|
|
// If reference frame is an Inter frame
|
|
if (mbmi->ref_frame) {
|
|
int_mv nearest, nearby, best_mv;
|
|
int_mv nearest_second, nearby_second, best_mv_second;
|
|
vp9_prob mv_ref_p[VP9_MVREFS - 1];
|
|
|
|
const MV_REFERENCE_FRAME ref_frame = mbmi->ref_frame;
|
|
struct scale_factors *sf0 = &xd->scale_factor[0];
|
|
*sf0 = cm->active_ref_scale[mbmi->ref_frame - 1];
|
|
|
|
{
|
|
// Select the appropriate reference frame for this MB
|
|
const int ref_fb_idx = cm->active_ref_idx[ref_frame - 1];
|
|
|
|
setup_pre_planes(xd, &cm->yv12_fb[ref_fb_idx], NULL,
|
|
mi_row, mi_col, xd->scale_factor, xd->scale_factor_uv);
|
|
|
|
#ifdef DEC_DEBUG
|
|
if (dec_debug)
|
|
printf("%d %d\n", xd->mode_info_context->mbmi.mv[0].as_mv.row,
|
|
xd->mode_info_context->mbmi.mv[0].as_mv.col);
|
|
#endif
|
|
vp9_find_mv_refs(cm, xd, mi, use_prev_in_find_mv_refs ? prev_mi : NULL,
|
|
ref_frame, mbmi->ref_mvs[ref_frame],
|
|
cm->ref_frame_sign_bias);
|
|
|
|
vp9_mv_ref_probs(cm, mv_ref_p, mbmi->mb_mode_context[ref_frame]);
|
|
|
|
// If the segment level skip mode enabled
|
|
if (vp9_segfeature_active(xd, mbmi->segment_id, SEG_LVL_SKIP)) {
|
|
mbmi->mode = ZEROMV;
|
|
} else {
|
|
#if CONFIG_AB4X4
|
|
if (mbmi->sb_type >= BLOCK_SIZE_SB8X8)
|
|
mbmi->mode = read_sb_mv_ref(r, mv_ref_p);
|
|
else
|
|
mbmi->mode = SPLITMV;
|
|
#else
|
|
mbmi->mode = mbmi->sb_type > BLOCK_SIZE_SB8X8 ?
|
|
read_sb_mv_ref(r, mv_ref_p)
|
|
: read_mv_ref(r, mv_ref_p);
|
|
#endif
|
|
vp9_accum_mv_refs(cm, mbmi->mode, mbmi->mb_mode_context[ref_frame]);
|
|
}
|
|
|
|
if (mbmi->mode != ZEROMV) {
|
|
vp9_find_best_ref_mvs(xd,
|
|
mbmi->ref_mvs[ref_frame],
|
|
&nearest, &nearby);
|
|
|
|
best_mv.as_int = mbmi->ref_mvs[ref_frame][0].as_int;
|
|
}
|
|
|
|
#ifdef DEC_DEBUG
|
|
if (dec_debug)
|
|
printf("[D %d %d] %d %d %d %d\n", ref_frame,
|
|
mbmi->mb_mode_context[ref_frame],
|
|
mv_ref_p[0], mv_ref_p[1], mv_ref_p[2], mv_ref_p[3]);
|
|
#endif
|
|
}
|
|
|
|
mbmi->interp_filter = cm->mcomp_filter_type == SWITCHABLE
|
|
? read_switchable_filter_type(pbi, r)
|
|
: cm->mcomp_filter_type;
|
|
|
|
if (cm->comp_pred_mode == COMP_PREDICTION_ONLY ||
|
|
(cm->comp_pred_mode == HYBRID_PREDICTION &&
|
|
vp9_read(r, vp9_get_pred_prob(cm, xd, PRED_COMP)))) {
|
|
/* Since we have 3 reference frames, we can only have 3 unique
|
|
* combinations of combinations of 2 different reference frames
|
|
* (A-G, G-L or A-L). In the bitstream, we use this to simply
|
|
* derive the second reference frame from the first reference
|
|
* frame, by saying it's the next one in the enumerator, and
|
|
* if that's > n_refs, then the second reference frame is the
|
|
* first one in the enumerator. */
|
|
mbmi->second_ref_frame = mbmi->ref_frame + 1;
|
|
if (mbmi->second_ref_frame == 4)
|
|
mbmi->second_ref_frame = 1;
|
|
if (mbmi->second_ref_frame > 0) {
|
|
const MV_REFERENCE_FRAME second_ref_frame = mbmi->second_ref_frame;
|
|
struct scale_factors *sf1 = &xd->scale_factor[1];
|
|
const int second_ref_fb_idx = cm->active_ref_idx[second_ref_frame - 1];
|
|
*sf1 = cm->active_ref_scale[second_ref_frame - 1];
|
|
|
|
setup_pre_planes(xd, NULL, &cm->yv12_fb[second_ref_fb_idx],
|
|
mi_row, mi_col, xd->scale_factor, xd->scale_factor_uv);
|
|
|
|
vp9_find_mv_refs(cm, xd, mi,
|
|
use_prev_in_find_mv_refs ? prev_mi : NULL,
|
|
second_ref_frame, mbmi->ref_mvs[second_ref_frame],
|
|
cm->ref_frame_sign_bias);
|
|
|
|
if (mbmi->mode != ZEROMV) {
|
|
vp9_find_best_ref_mvs(xd,
|
|
mbmi->ref_mvs[second_ref_frame],
|
|
&nearest_second,
|
|
&nearby_second);
|
|
best_mv_second.as_int = mbmi->ref_mvs[second_ref_frame][0].as_int;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
mbmi->uv_mode = DC_PRED;
|
|
switch (mbmi->mode) {
|
|
case SPLITMV: {
|
|
const int num_p = 4;
|
|
int j = 0;
|
|
|
|
mbmi->need_to_clamp_mvs = 0;
|
|
do { // for each subset j
|
|
int_mv leftmv, abovemv, second_leftmv, second_abovemv;
|
|
int_mv blockmv, secondmv;
|
|
int mv_contz;
|
|
int blockmode;
|
|
int k = j;
|
|
|
|
leftmv.as_int = left_block_mv(xd, mi, k);
|
|
abovemv.as_int = above_block_mv(mi, k, mis);
|
|
second_leftmv.as_int = 0;
|
|
second_abovemv.as_int = 0;
|
|
if (mbmi->second_ref_frame > 0) {
|
|
second_leftmv.as_int = left_block_second_mv(xd, mi, k);
|
|
second_abovemv.as_int = above_block_second_mv(mi, k, mis);
|
|
}
|
|
mv_contz = vp9_mv_cont(&leftmv, &abovemv);
|
|
blockmode = read_sub_mv_ref(r, cm->fc.sub_mv_ref_prob[mv_contz]);
|
|
cm->fc.sub_mv_ref_counts[mv_contz][blockmode - LEFT4X4]++;
|
|
|
|
switch (blockmode) {
|
|
case NEW4X4:
|
|
process_mv(r, &blockmv.as_mv, &best_mv.as_mv, nmvc,
|
|
&cm->fc.NMVcount, xd->allow_high_precision_mv);
|
|
|
|
if (mbmi->second_ref_frame > 0)
|
|
process_mv(r, &secondmv.as_mv, &best_mv_second.as_mv, nmvc,
|
|
&cm->fc.NMVcount, xd->allow_high_precision_mv);
|
|
|
|
#ifdef VPX_MODE_COUNT
|
|
vp9_mv_cont_count[mv_contz][3]++;
|
|
#endif
|
|
break;
|
|
case LEFT4X4:
|
|
blockmv.as_int = leftmv.as_int;
|
|
if (mbmi->second_ref_frame > 0)
|
|
secondmv.as_int = second_leftmv.as_int;
|
|
#ifdef VPX_MODE_COUNT
|
|
vp9_mv_cont_count[mv_contz][0]++;
|
|
#endif
|
|
break;
|
|
case ABOVE4X4:
|
|
blockmv.as_int = abovemv.as_int;
|
|
if (mbmi->second_ref_frame > 0)
|
|
secondmv.as_int = second_abovemv.as_int;
|
|
#ifdef VPX_MODE_COUNT
|
|
vp9_mv_cont_count[mv_contz][1]++;
|
|
#endif
|
|
break;
|
|
case ZERO4X4:
|
|
blockmv.as_int = 0;
|
|
if (mbmi->second_ref_frame > 0)
|
|
secondmv.as_int = 0;
|
|
#ifdef VPX_MODE_COUNT
|
|
vp9_mv_cont_count[mv_contz][2]++;
|
|
#endif
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
mi->bmi[j].as_mv[0].as_int = blockmv.as_int;
|
|
if (mbmi->second_ref_frame > 0)
|
|
mi->bmi[j].as_mv[1].as_int = secondmv.as_int;
|
|
} while (++j < num_p);
|
|
}
|
|
|
|
mv0->as_int = mi->bmi[3].as_mv[0].as_int;
|
|
mv1->as_int = mi->bmi[3].as_mv[1].as_int;
|
|
|
|
break; /* done with SPLITMV */
|
|
|
|
case NEARMV:
|
|
// Clip "next_nearest" so that it does not extend to far out of image
|
|
assign_and_clamp_mv(mv0, &nearby, mb_to_left_edge,
|
|
mb_to_right_edge,
|
|
mb_to_top_edge,
|
|
mb_to_bottom_edge);
|
|
if (mbmi->second_ref_frame > 0)
|
|
assign_and_clamp_mv(mv1, &nearby_second, mb_to_left_edge,
|
|
mb_to_right_edge,
|
|
mb_to_top_edge,
|
|
mb_to_bottom_edge);
|
|
break;
|
|
|
|
case NEARESTMV:
|
|
// Clip "next_nearest" so that it does not extend to far out of image
|
|
assign_and_clamp_mv(mv0, &nearest, mb_to_left_edge,
|
|
mb_to_right_edge,
|
|
mb_to_top_edge,
|
|
mb_to_bottom_edge);
|
|
if (mbmi->second_ref_frame > 0)
|
|
assign_and_clamp_mv(mv1, &nearest_second, mb_to_left_edge,
|
|
mb_to_right_edge,
|
|
mb_to_top_edge,
|
|
mb_to_bottom_edge);
|
|
break;
|
|
|
|
case ZEROMV:
|
|
mv0->as_int = 0;
|
|
if (mbmi->second_ref_frame > 0)
|
|
mv1->as_int = 0;
|
|
break;
|
|
|
|
case NEWMV:
|
|
process_mv(r, &mv0->as_mv, &best_mv.as_mv, nmvc, &cm->fc.NMVcount,
|
|
xd->allow_high_precision_mv);
|
|
mbmi->need_to_clamp_mvs = check_mv_bounds(mv0,
|
|
mb_to_left_edge,
|
|
mb_to_right_edge,
|
|
mb_to_top_edge,
|
|
mb_to_bottom_edge);
|
|
|
|
if (mbmi->second_ref_frame > 0) {
|
|
process_mv(r, &mv1->as_mv, &best_mv_second.as_mv, nmvc,
|
|
&cm->fc.NMVcount, xd->allow_high_precision_mv);
|
|
mbmi->need_to_clamp_secondmv = check_mv_bounds(mv1,
|
|
mb_to_left_edge,
|
|
mb_to_right_edge,
|
|
mb_to_top_edge,
|
|
mb_to_bottom_edge);
|
|
}
|
|
break;
|
|
default:
|
|
;
|
|
#if CONFIG_DEBUG
|
|
assert(0);
|
|
#endif
|
|
}
|
|
} else {
|
|
// required for left and above block mv
|
|
mv0->as_int = 0;
|
|
|
|
#if CONFIG_AB4X4
|
|
if (mbmi->sb_type >= BLOCK_SIZE_SB8X8) {
|
|
mbmi->mode = read_sb_ymode(r, cm->fc.sb_ymode_prob);
|
|
cm->fc.sb_ymode_counts[mbmi->mode]++;
|
|
} else {
|
|
mbmi->mode = I4X4_PRED;
|
|
}
|
|
#else
|
|
if (mbmi->sb_type > BLOCK_SIZE_SB8X8) {
|
|
mbmi->mode = read_sb_ymode(r, cm->fc.sb_ymode_prob);
|
|
cm->fc.sb_ymode_counts[mbmi->mode]++;
|
|
} else {
|
|
mbmi->mode = read_ymode(r, cm->fc.ymode_prob);
|
|
cm->fc.ymode_counts[mbmi->mode]++;
|
|
}
|
|
#endif
|
|
|
|
// If MB mode is I4X4_PRED read the block modes
|
|
#if CONFIG_AB4X4
|
|
if (mbmi->sb_type < BLOCK_SIZE_SB8X8) {
|
|
#else
|
|
if (mbmi->mode == I4X4_PRED) {
|
|
#endif
|
|
int j = 0;
|
|
do {
|
|
int m = read_bmode(r, cm->fc.bmode_prob);
|
|
mi->bmi[j].as_mode.first = m;
|
|
cm->fc.bmode_counts[m]++;
|
|
} while (++j < 4);
|
|
}
|
|
|
|
mbmi->uv_mode = read_uv_mode(r, cm->fc.uv_mode_prob[mbmi->mode]);
|
|
cm->fc.uv_mode_counts[mbmi->mode][mbmi->uv_mode]++;
|
|
}
|
|
|
|
#if CONFIG_AB4X4
|
|
if (cm->txfm_mode == TX_MODE_SELECT && mbmi->mb_skip_coeff == 0 &&
|
|
mbmi->sb_type >= BLOCK_SIZE_SB8X8) {
|
|
#else
|
|
if (cm->txfm_mode == TX_MODE_SELECT && mbmi->mb_skip_coeff == 0 &&
|
|
((mbmi->ref_frame == INTRA_FRAME && mbmi->mode != I4X4_PRED) ||
|
|
(mbmi->ref_frame != INTRA_FRAME && mbmi->mode != SPLITMV))) {
|
|
#endif
|
|
const int allow_16x16 = mbmi->sb_type >= BLOCK_SIZE_MB16X16;
|
|
const int allow_32x32 = mbmi->sb_type >= BLOCK_SIZE_SB32X32;
|
|
mbmi->txfm_size = select_txfm_size(cm, r, allow_16x16, allow_32x32);
|
|
} else if (mbmi->sb_type >= BLOCK_SIZE_SB32X32 &&
|
|
cm->txfm_mode >= ALLOW_32X32) {
|
|
mbmi->txfm_size = TX_32X32;
|
|
} else if (cm->txfm_mode >= ALLOW_16X16 &&
|
|
mbmi->sb_type >= BLOCK_SIZE_MB16X16
|
|
#if !CONFIG_AB4X4
|
|
&& ((mbmi->ref_frame == INTRA_FRAME && mbmi->mode <= TM_PRED) ||
|
|
(mbmi->ref_frame != INTRA_FRAME && mbmi->mode != SPLITMV))
|
|
#endif
|
|
) {
|
|
mbmi->txfm_size = TX_16X16;
|
|
} else if (cm->txfm_mode >= ALLOW_8X8 &&
|
|
#if CONFIG_AB4X4
|
|
(mbmi->sb_type >= BLOCK_SIZE_SB8X8))
|
|
#else
|
|
(!(mbmi->ref_frame == INTRA_FRAME && mbmi->mode == I4X4_PRED) &&
|
|
!(mbmi->ref_frame != INTRA_FRAME && mbmi->mode == SPLITMV)))
|
|
#endif
|
|
{
|
|
mbmi->txfm_size = TX_8X8;
|
|
} else {
|
|
mbmi->txfm_size = TX_4X4;
|
|
}
|
|
}
|
|
|
|
void vp9_decode_mode_mvs_init(VP9D_COMP* const pbi, vp9_reader *r) {
|
|
VP9_COMMON *cm = &pbi->common;
|
|
int k;
|
|
|
|
// TODO(jkoleszar): does this clear more than MBSKIP_CONTEXTS? Maybe remove.
|
|
vpx_memset(cm->mbskip_pred_probs, 0, sizeof(cm->mbskip_pred_probs));
|
|
for (k = 0; k < MBSKIP_CONTEXTS; ++k)
|
|
cm->mbskip_pred_probs[k] = vp9_read_prob(r);
|
|
|
|
mb_mode_mv_init(pbi, r);
|
|
}
|
|
|
|
void vp9_decode_mb_mode_mv(VP9D_COMP* const pbi,
|
|
MACROBLOCKD* const xd,
|
|
int mi_row,
|
|
int mi_col,
|
|
vp9_reader *r) {
|
|
VP9_COMMON *const cm = &pbi->common;
|
|
MODE_INFO *mi = xd->mode_info_context;
|
|
MODE_INFO *prev_mi = xd->prev_mode_info_context;
|
|
MB_MODE_INFO *const mbmi = &mi->mbmi;
|
|
|
|
if (cm->frame_type == KEY_FRAME) {
|
|
kfread_modes(pbi, mi, mi_row, mi_col, r);
|
|
} else {
|
|
read_mb_modes_mv(pbi, mi, &mi->mbmi, prev_mi, mi_row, mi_col, r);
|
|
set_scale_factors(xd,
|
|
mi->mbmi.ref_frame - 1, mi->mbmi.second_ref_frame - 1,
|
|
cm->active_ref_scale);
|
|
}
|
|
|
|
if (1) {
|
|
const int bw = 1 << mi_width_log2(mbmi->sb_type);
|
|
const int bh = 1 << mi_height_log2(mbmi->sb_type);
|
|
const int y_mis = MIN(bh, cm->mi_rows - mi_row);
|
|
const int x_mis = MIN(bw, cm->mi_cols - mi_col);
|
|
const int mis = cm->mode_info_stride;
|
|
int x, y;
|
|
|
|
for (y = 0; y < y_mis; y++)
|
|
for (x = !y; x < x_mis; x++)
|
|
mi[y * mis + x] = *mi;
|
|
}
|
|
}
|