47a2154c0e
This commit moves a bit of data that ended up packed with the modes/mv/residual partition during the change to interleaved encoding into partition 0 where it belongs. Change-Id: Ic711a378c58d9d6a17254384f492c213a15bad92
1324 lines
45 KiB
C
1324 lines
45 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 "treereader.h"
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#include "vp8/common/entropymv.h"
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#include "vp8/common/entropymode.h"
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#include "onyxd_int.h"
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#include "vp8/common/findnearmv.h"
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#include "vp8/common/seg_common.h"
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#include "vp8/common/pred_common.h"
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#include "vp8/common/entropy.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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static int vp8_read_bmode(vp8_reader *bc, const vp8_prob *p) {
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return vp8_treed_read(bc, vp8_bmode_tree, p);
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}
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static int vp8_read_ymode(vp8_reader *bc, const vp8_prob *p) {
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return vp8_treed_read(bc, vp8_ymode_tree, p);
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}
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#if CONFIG_SUPERBLOCKS
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static int vp8_sb_kfread_ymode(vp8_reader *bc, const vp8_prob *p) {
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return vp8_treed_read(bc, vp8_uv_mode_tree, p);
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}
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#endif
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static int vp8_kfread_ymode(vp8_reader *bc, const vp8_prob *p) {
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return vp8_treed_read(bc, vp8_kf_ymode_tree, p);
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}
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static int vp8_read_i8x8_mode(vp8_reader *bc, const vp8_prob *p) {
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return vp8_treed_read(bc, vp8_i8x8_mode_tree, p);
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}
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static int vp8_read_uv_mode(vp8_reader *bc, const vp8_prob *p) {
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return vp8_treed_read(bc, vp8_uv_mode_tree, p);
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}
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// This function reads the current macro block's segnent id from the bitstream
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// It should only be called if a segment map update is indicated.
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static void vp8_read_mb_segid(vp8_reader *r, MB_MODE_INFO *mi,
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MACROBLOCKD *xd) {
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/* Is segmentation enabled */
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if (xd->segmentation_enabled && xd->update_mb_segmentation_map) {
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/* If so then read the segment id. */
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if (vp8_read(r, xd->mb_segment_tree_probs[0]))
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mi->segment_id =
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(unsigned char)(2 + vp8_read(r, xd->mb_segment_tree_probs[2]));
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else
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mi->segment_id =
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(unsigned char)(vp8_read(r, xd->mb_segment_tree_probs[1]));
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}
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}
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extern const int vp8_i8x8_block[4];
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static void vp8_kfread_modes(VP8D_COMP *pbi,
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MODE_INFO *m,
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int mb_row,
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int mb_col) {
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VP8_COMMON *const cm = & pbi->common;
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vp8_reader *const bc = pbi->mb.current_bc;
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const int mis = pbi->common.mode_info_stride;
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int map_index = mb_row * pbi->common.mb_cols + mb_col;
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MB_PREDICTION_MODE y_mode;
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// Read the Macroblock segmentation map if it is being updated explicitly
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// this frame (reset to 0 by default).
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m->mbmi.segment_id = 0;
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if (pbi->mb.update_mb_segmentation_map) {
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vp8_read_mb_segid(bc, &m->mbmi, &pbi->mb);
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pbi->common.last_frame_seg_map[map_index] = m->mbmi.segment_id;
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}
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m->mbmi.mb_skip_coeff = 0;
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if (pbi->common.mb_no_coeff_skip &&
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(!segfeature_active(&pbi->mb,
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m->mbmi.segment_id, SEG_LVL_EOB) ||
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(get_segdata(&pbi->mb,
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m->mbmi.segment_id, SEG_LVL_EOB) != 0))) {
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MACROBLOCKD *const xd = & pbi->mb;
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m->mbmi.mb_skip_coeff = vp8_read(bc, get_pred_prob(cm, xd, PRED_MBSKIP));
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} else {
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if (segfeature_active(&pbi->mb,
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m->mbmi.segment_id, SEG_LVL_EOB) &&
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(get_segdata(&pbi->mb,
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m->mbmi.segment_id, SEG_LVL_EOB) == 0)) {
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m->mbmi.mb_skip_coeff = 1;
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} else
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m->mbmi.mb_skip_coeff = 0;
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}
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#if CONFIG_SUPERBLOCKS
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if (m->mbmi.encoded_as_sb) {
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y_mode = (MB_PREDICTION_MODE) vp8_sb_kfread_ymode(bc,
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pbi->common.sb_kf_ymode_prob[pbi->common.kf_ymode_probs_index]);
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} else
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#endif
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y_mode = (MB_PREDICTION_MODE) vp8_kfread_ymode(bc,
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pbi->common.kf_ymode_prob[pbi->common.kf_ymode_probs_index]);
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#if CONFIG_COMP_INTRA_PRED
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m->mbmi.second_mode = (MB_PREDICTION_MODE)(DC_PRED - 1);
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#endif
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m->mbmi.ref_frame = INTRA_FRAME;
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if ((m->mbmi.mode = y_mode) == B_PRED) {
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int i = 0;
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#if CONFIG_COMP_INTRA_PRED
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int use_comp_pred = vp8_read(bc, 128);
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#endif
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do {
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const B_PREDICTION_MODE A = above_block_mode(m, i, mis);
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const B_PREDICTION_MODE L = left_block_mode(m, i);
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m->bmi[i].as_mode.first =
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(B_PREDICTION_MODE) vp8_read_bmode(
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bc, pbi->common.kf_bmode_prob [A] [L]);
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#if CONFIG_COMP_INTRA_PRED
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if (use_comp_pred) {
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m->bmi[i].as_mode.second =
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(B_PREDICTION_MODE) vp8_read_bmode(
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bc, pbi->common.kf_bmode_prob [A] [L]);
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} else {
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m->bmi[i].as_mode.second = (B_PREDICTION_MODE)(B_DC_PRED - 1);
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}
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#endif
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} while (++i < 16);
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}
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if ((m->mbmi.mode = y_mode) == I8X8_PRED) {
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int i;
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int mode8x8;
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for (i = 0; i < 4; i++) {
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int ib = vp8_i8x8_block[i];
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mode8x8 = vp8_read_i8x8_mode(bc, pbi->common.fc.i8x8_mode_prob);
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m->bmi[ib + 0].as_mode.first = mode8x8;
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m->bmi[ib + 1].as_mode.first = mode8x8;
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m->bmi[ib + 4].as_mode.first = mode8x8;
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m->bmi[ib + 5].as_mode.first = mode8x8;
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#if CONFIG_COMP_INTRA_PRED
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m->bmi[ib + 0].as_mode.second = (MB_PREDICTION_MODE)(DC_PRED - 1);
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m->bmi[ib + 1].as_mode.second = (MB_PREDICTION_MODE)(DC_PRED - 1);
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m->bmi[ib + 4].as_mode.second = (MB_PREDICTION_MODE)(DC_PRED - 1);
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m->bmi[ib + 5].as_mode.second = (MB_PREDICTION_MODE)(DC_PRED - 1);
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#endif
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}
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} else
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m->mbmi.uv_mode = (MB_PREDICTION_MODE)vp8_read_uv_mode(bc,
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pbi->common.kf_uv_mode_prob[m->mbmi.mode]);
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#if CONFIG_COMP_INTRA_PRED
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m->mbmi.second_uv_mode = (MB_PREDICTION_MODE)(DC_PRED - 1);
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#endif
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#if CONFIG_TX_SELECT
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if (cm->txfm_mode == TX_MODE_SELECT && m->mbmi.mb_skip_coeff == 0 &&
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m->mbmi.mode <= I8X8_PRED) {
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// FIXME(rbultje) code ternary symbol once all experiments are merged
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m->mbmi.txfm_size = vp8_read(bc, cm->prob_tx[0]);
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if (m->mbmi.txfm_size != TX_4X4 && m->mbmi.mode != I8X8_PRED)
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m->mbmi.txfm_size += vp8_read(bc, cm->prob_tx[1]);
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} else
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#endif
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if (cm->txfm_mode >= ALLOW_16X16 && 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 && m->mbmi.mode != B_PRED) {
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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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#if CONFIG_NEWMVENTROPY
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static int read_nmv_component(vp8_reader *r,
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int rv,
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const nmv_component *mvcomp) {
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int v, s, z, c, o, d;
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s = vp8_read(r, mvcomp->sign);
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c = vp8_treed_read(r, vp8_mv_class_tree, mvcomp->classes);
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if (c == MV_CLASS_0) {
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d = vp8_treed_read(r, vp8_mv_class0_tree, mvcomp->class0);
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} else {
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int i, b;
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d = 0;
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b = c + CLASS0_BITS - 1; /* number of bits */
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for (i = 0; i < b; ++i)
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d |= (vp8_read(r, mvcomp->bits[i]) << i);
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}
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o = d << 3;
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z = vp8_get_mv_mag(c, o);
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v = (s ? -(z + 1) : (z + 1));
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return v;
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}
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static int read_nmv_component_fp(vp8_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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int s, z, c, o, d, e, f;
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s = v < 0;
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z = (s ? -v : v) - 1; /* magnitude - 1 */
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c = vp8_get_mv_class(z, &o);
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d = o >> 3;
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if (c == MV_CLASS_0) {
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f = vp8_treed_read(r, vp8_mv_fp_tree, mvcomp->class0_fp[d]);
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} else {
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f = vp8_treed_read(r, vp8_mv_fp_tree, mvcomp->fp);
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}
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o += (f << 1);
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if (usehp) {
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if (c == MV_CLASS_0) {
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e = vp8_read(r, mvcomp->class0_hp);
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} else {
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e = vp8_read(r, mvcomp->hp);
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}
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o += e;
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} else {
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++o; /* Note if hp is not used, the default value of the hp bit is 1 */
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}
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z = vp8_get_mv_mag(c, o);
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v = (s ? -(z + 1) : (z + 1));
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return v;
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}
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static void read_nmv(vp8_reader *r, MV *mv, const MV *ref,
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const nmv_context *mvctx) {
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MV_JOINT_TYPE j = vp8_treed_read(r, vp8_mv_joint_tree, mvctx->joints);
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mv->row = mv-> col = 0;
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if (j == MV_JOINT_HZVNZ || j == MV_JOINT_HNZVNZ) {
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mv->row = read_nmv_component(r, ref->row, &mvctx->comps[0]);
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}
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if (j == MV_JOINT_HNZVZ || j == MV_JOINT_HNZVNZ) {
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mv->col = read_nmv_component(r, ref->col, &mvctx->comps[1]);
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}
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}
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static void read_nmv_fp(vp8_reader *r, MV *mv, const MV *ref,
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const nmv_context *mvctx, int usehp) {
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MV_JOINT_TYPE j = vp8_get_mv_joint(*mv);
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usehp = usehp && vp8_use_nmv_hp(ref);
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if (j == MV_JOINT_HZVNZ || j == MV_JOINT_HNZVNZ) {
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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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}
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if (j == MV_JOINT_HNZVZ || j == MV_JOINT_HNZVNZ) {
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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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//printf(" %d: %d %d ref: %d %d\n", usehp, mv->row, mv-> col, ref->row, ref->col);
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}
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static void update_nmv(vp8_reader *bc, vp8_prob *const p,
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const vp8_prob upd_p) {
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if (vp8_read(bc, upd_p)) {
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#ifdef LOW_PRECISION_MV_UPDATE
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*p = (vp8_read_literal(bc, 7) << 1) | 1;
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#else
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*p = (vp8_read_literal(bc, 8));
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#endif
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}
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}
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static void read_nmvprobs(vp8_reader *bc, 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 (!vp8_read_bit(bc)) return;
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#endif
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for (j = 0; j < MV_JOINTS - 1; ++j) {
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update_nmv(bc, &mvctx->joints[j],
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VP8_NMV_UPDATE_PROB);
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}
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for (i = 0; i < 2; ++i) {
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update_nmv(bc, &mvctx->comps[i].sign,
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VP8_NMV_UPDATE_PROB);
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for (j = 0; j < MV_CLASSES - 1; ++j) {
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update_nmv(bc, &mvctx->comps[i].classes[j],
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VP8_NMV_UPDATE_PROB);
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}
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for (j = 0; j < CLASS0_SIZE - 1; ++j) {
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update_nmv(bc, &mvctx->comps[i].class0[j],
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VP8_NMV_UPDATE_PROB);
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}
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for (j = 0; j < MV_OFFSET_BITS; ++j) {
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update_nmv(bc, &mvctx->comps[i].bits[j],
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VP8_NMV_UPDATE_PROB);
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}
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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(bc, &mvctx->comps[i].class0_fp[j][k],
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VP8_NMV_UPDATE_PROB);
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}
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for (j = 0; j < 3; ++j) {
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update_nmv(bc, &mvctx->comps[i].fp[j],
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VP8_NMV_UPDATE_PROB);
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}
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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(bc, &mvctx->comps[i].class0_hp,
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VP8_NMV_UPDATE_PROB);
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update_nmv(bc, &mvctx->comps[i].hp,
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VP8_NMV_UPDATE_PROB);
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}
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}
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}
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#else
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static int read_mvcomponent(vp8_reader *r, const MV_CONTEXT *mvc) {
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const vp8_prob *const p = (const vp8_prob *) mvc;
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int x = 0;
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if (vp8_read(r, p [mvpis_short])) { /* Large */
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int i = 0;
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do {
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x += vp8_read(r, p [MVPbits + i]) << i;
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} while (++i < mvnum_short_bits);
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i = mvlong_width - 1; /* Skip bit 3, which is sometimes implicit */
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do {
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x += vp8_read(r, p [MVPbits + i]) << i;
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} while (--i > mvnum_short_bits);
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if (!(x & ~((2 << mvnum_short_bits) - 1)) || vp8_read(r, p [MVPbits + mvnum_short_bits]))
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x += (mvnum_short);
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} else /* small */
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x = vp8_treed_read(r, vp8_small_mvtree, p + MVPshort);
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if (x && vp8_read(r, p [MVPsign]))
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x = -x;
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return x;
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}
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static void read_mv(vp8_reader *r, MV *mv, const MV_CONTEXT *mvc) {
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mv->row = (short)(read_mvcomponent(r, mvc) << 1);
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mv->col = (short)(read_mvcomponent(r, ++mvc) << 1);
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#ifdef DEBUG_DEC_MV
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int i;
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printf("%d (np): %d %d\n", dec_mvcount++, mv->row, mv->col);
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// for (i=0; i<MVPcount;++i) printf(" %d", (&mvc[-1])->prob[i]); printf("\n");
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// for (i=0; i<MVPcount;++i) printf(" %d", (&mvc[0])->prob[i]); printf("\n");
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#endif
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}
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static void read_mvcontexts(vp8_reader *bc, MV_CONTEXT *mvc) {
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int i = 0;
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do {
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const vp8_prob *up = vp8_mv_update_probs[i].prob;
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vp8_prob *p = (vp8_prob *)(mvc + i);
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vp8_prob *const pstop = p + MVPcount;
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do {
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if (vp8_read(bc, *up++)) {
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const vp8_prob x = (vp8_prob)vp8_read_literal(bc, 7);
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*p = x ? x << 1 : 1;
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}
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} while (++p < pstop);
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} while (++i < 2);
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}
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static int read_mvcomponent_hp(vp8_reader *r, const MV_CONTEXT_HP *mvc) {
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const vp8_prob *const p = (const vp8_prob *) mvc;
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int x = 0;
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if (vp8_read(r, p [mvpis_short_hp])) { /* Large */
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int i = 0;
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do {
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x += vp8_read(r, p [MVPbits_hp + i]) << i;
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} while (++i < mvnum_short_bits_hp);
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i = mvlong_width_hp - 1; /* Skip bit 3, which is sometimes implicit */
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do {
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x += vp8_read(r, p [MVPbits_hp + i]) << i;
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} while (--i > mvnum_short_bits_hp);
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if (!(x & ~((2 << mvnum_short_bits_hp) - 1)) || vp8_read(r, p [MVPbits_hp + mvnum_short_bits_hp]))
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x += (mvnum_short_hp);
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} else /* small */
|
|
x = vp8_treed_read(r, vp8_small_mvtree_hp, p + MVPshort_hp);
|
|
|
|
if (x && vp8_read(r, p [MVPsign_hp]))
|
|
x = -x;
|
|
|
|
return x;
|
|
}
|
|
|
|
static void read_mv_hp(vp8_reader *r, MV *mv, const MV_CONTEXT_HP *mvc) {
|
|
mv->row = (short)(read_mvcomponent_hp(r, mvc));
|
|
mv->col = (short)(read_mvcomponent_hp(r, ++mvc));
|
|
#ifdef DEBUG_DEC_MV
|
|
int i;
|
|
printf("%d (hp): %d %d\n", dec_mvcount++, mv->row, mv->col);
|
|
// for (i=0; i<MVPcount_hp;++i) printf(" %d", (&mvc[-1])->prob[i]); printf("\n");
|
|
// for (i=0; i<MVPcount_hp;++i) printf(" %d", (&mvc[0])->prob[i]); printf("\n");
|
|
#endif
|
|
}
|
|
|
|
static void read_mvcontexts_hp(vp8_reader *bc, MV_CONTEXT_HP *mvc) {
|
|
int i = 0;
|
|
|
|
do {
|
|
const vp8_prob *up = vp8_mv_update_probs_hp[i].prob;
|
|
vp8_prob *p = (vp8_prob *)(mvc + i);
|
|
vp8_prob *const pstop = p + MVPcount_hp;
|
|
|
|
do {
|
|
if (vp8_read(bc, *up++)) {
|
|
const vp8_prob x = (vp8_prob)vp8_read_literal(bc, 7);
|
|
|
|
*p = x ? x << 1 : 1;
|
|
}
|
|
} while (++p < pstop);
|
|
} while (++i < 2);
|
|
}
|
|
|
|
#endif /* CONFIG_NEWMVENTROPY */
|
|
|
|
// Read the referncence frame
|
|
static MV_REFERENCE_FRAME read_ref_frame(VP8D_COMP *pbi,
|
|
vp8_reader *const bc,
|
|
unsigned char segment_id) {
|
|
MV_REFERENCE_FRAME ref_frame;
|
|
int seg_ref_active;
|
|
int seg_ref_count = 0;
|
|
|
|
VP8_COMMON *const cm = & pbi->common;
|
|
MACROBLOCKD *const xd = &pbi->mb;
|
|
|
|
seg_ref_active = segfeature_active(xd,
|
|
segment_id,
|
|
SEG_LVL_REF_FRAME);
|
|
|
|
// If segment coding enabled does the segment allow for more than one
|
|
// possible reference frame
|
|
if (seg_ref_active) {
|
|
seg_ref_count = check_segref(xd, segment_id, INTRA_FRAME) +
|
|
check_segref(xd, segment_id, LAST_FRAME) +
|
|
check_segref(xd, segment_id, GOLDEN_FRAME) +
|
|
check_segref(xd, segment_id, ALTREF_FRAME);
|
|
}
|
|
|
|
// Segment reference frame features not available or allows for
|
|
// multiple reference frame options
|
|
if (!seg_ref_active || (seg_ref_count > 1)) {
|
|
// Values used in prediction model coding
|
|
unsigned char prediction_flag;
|
|
vp8_prob pred_prob;
|
|
MV_REFERENCE_FRAME pred_ref;
|
|
|
|
// Get the context probability the prediction flag
|
|
pred_prob = get_pred_prob(cm, xd, PRED_REF);
|
|
|
|
// Read the prediction status flag
|
|
prediction_flag = (unsigned char)vp8_read(bc, pred_prob);
|
|
|
|
// Store the prediction flag.
|
|
set_pred_flag(xd, PRED_REF, prediction_flag);
|
|
|
|
// Get the predicted reference frame.
|
|
pred_ref = get_pred_ref(cm, xd);
|
|
|
|
// If correctly predicted then use the predicted value
|
|
if (prediction_flag) {
|
|
ref_frame = pred_ref;
|
|
}
|
|
// else decode the explicitly coded value
|
|
else {
|
|
vp8_prob mod_refprobs[PREDICTION_PROBS];
|
|
vpx_memcpy(mod_refprobs,
|
|
cm->mod_refprobs[pred_ref], sizeof(mod_refprobs));
|
|
|
|
// If segment coding enabled blank out options that cant occur by
|
|
// setting the branch probability to 0.
|
|
if (seg_ref_active) {
|
|
mod_refprobs[INTRA_FRAME] *=
|
|
check_segref(xd, segment_id, INTRA_FRAME);
|
|
mod_refprobs[LAST_FRAME] *=
|
|
check_segref(xd, segment_id, LAST_FRAME);
|
|
mod_refprobs[GOLDEN_FRAME] *=
|
|
(check_segref(xd, segment_id, GOLDEN_FRAME) *
|
|
check_segref(xd, segment_id, ALTREF_FRAME));
|
|
}
|
|
|
|
// Default to INTRA_FRAME (value 0)
|
|
ref_frame = INTRA_FRAME;
|
|
|
|
// Do we need to decode the Intra/Inter branch
|
|
if (mod_refprobs[0])
|
|
ref_frame = (MV_REFERENCE_FRAME) vp8_read(bc, mod_refprobs[0]);
|
|
else
|
|
ref_frame++;
|
|
|
|
if (ref_frame) {
|
|
// Do we need to decode the Last/Gf_Arf branch
|
|
if (mod_refprobs[1])
|
|
ref_frame += vp8_read(bc, mod_refprobs[1]);
|
|
else
|
|
ref_frame++;
|
|
|
|
if (ref_frame > 1) {
|
|
// Do we need to decode the GF/Arf branch
|
|
if (mod_refprobs[2])
|
|
ref_frame += vp8_read(bc, mod_refprobs[2]);
|
|
else {
|
|
if (seg_ref_active) {
|
|
if ((pred_ref == GOLDEN_FRAME) ||
|
|
!check_segref(xd, segment_id, GOLDEN_FRAME)) {
|
|
ref_frame = ALTREF_FRAME;
|
|
} else
|
|
ref_frame = GOLDEN_FRAME;
|
|
} else
|
|
ref_frame = (pred_ref == GOLDEN_FRAME)
|
|
? ALTREF_FRAME : GOLDEN_FRAME;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Segment reference frame features are enabled
|
|
else {
|
|
// The reference frame for the mb is considered as correclty predicted
|
|
// if it is signaled at the segment level for the purposes of the
|
|
// common prediction model
|
|
set_pred_flag(xd, PRED_REF, 1);
|
|
ref_frame = get_pred_ref(cm, xd);
|
|
}
|
|
|
|
return (MV_REFERENCE_FRAME)ref_frame;
|
|
}
|
|
|
|
#if CONFIG_SUPERBLOCKS
|
|
static MB_PREDICTION_MODE read_sb_mv_ref(vp8_reader *bc, const vp8_prob *p) {
|
|
return (MB_PREDICTION_MODE) vp8_treed_read(bc, vp8_sb_mv_ref_tree, p);
|
|
}
|
|
#endif
|
|
|
|
static MB_PREDICTION_MODE read_mv_ref(vp8_reader *bc, const vp8_prob *p) {
|
|
return (MB_PREDICTION_MODE) vp8_treed_read(bc, vp8_mv_ref_tree, p);
|
|
}
|
|
|
|
static B_PREDICTION_MODE sub_mv_ref(vp8_reader *bc, const vp8_prob *p) {
|
|
return (B_PREDICTION_MODE) vp8_treed_read(bc, vp8_sub_mv_ref_tree, p);
|
|
}
|
|
|
|
#ifdef VPX_MODE_COUNT
|
|
unsigned int vp8_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 const unsigned char mbsplit_fill_count[4] = {8, 8, 4, 1};
|
|
static const unsigned char mbsplit_fill_offset[4][16] = {
|
|
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
|
|
{ 0, 1, 4, 5, 8, 9, 12, 13, 2, 3, 6, 7, 10, 11, 14, 15},
|
|
{ 0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15},
|
|
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
|
|
};
|
|
|
|
#if CONFIG_SWITCHABLE_INTERP
|
|
static void read_switchable_interp_probs(VP8D_COMP *pbi) {
|
|
VP8_COMMON *const cm = & pbi->common;
|
|
vp8_reader *const bc = & pbi->bc;
|
|
int i, j;
|
|
for (j = 0; j <= VP8_SWITCHABLE_FILTERS; ++j) {
|
|
//for (j = 0; j <= 0; ++j) {
|
|
for (i = 0; i < VP8_SWITCHABLE_FILTERS - 1; ++i) {
|
|
cm->fc.switchable_interp_prob[j][i] = vp8_read_literal(bc, 8);
|
|
}
|
|
}
|
|
//printf("DECODER: %d %d\n", cm->fc.switchable_interp_prob[0],
|
|
//cm->fc.switchable_interp_prob[1]);
|
|
}
|
|
#endif
|
|
|
|
static void mb_mode_mv_init(VP8D_COMP *pbi, vp8_reader *bc) {
|
|
VP8_COMMON *const cm = & pbi->common;
|
|
#if CONFIG_NEWMVENTROPY
|
|
nmv_context *const nmvc = &pbi->common.fc.nmvc;
|
|
#else
|
|
MV_CONTEXT *const mvc = pbi->common.fc.mvc;
|
|
MV_CONTEXT_HP *const mvc_hp = pbi->common.fc.mvc_hp;
|
|
#endif
|
|
MACROBLOCKD *const xd = & pbi->mb;
|
|
|
|
if (cm->frame_type == KEY_FRAME) {
|
|
if (!cm->kf_ymode_probs_update)
|
|
cm->kf_ymode_probs_index = vp8_read_literal(bc, 3);
|
|
} else {
|
|
#if CONFIG_PRED_FILTER
|
|
cm->pred_filter_mode = (vp8_prob)vp8_read_literal(bc, 2);
|
|
|
|
if (cm->pred_filter_mode == 2)
|
|
cm->prob_pred_filter_off = (vp8_prob)vp8_read_literal(bc, 8);
|
|
#endif
|
|
#if CONFIG_SWITCHABLE_INTERP
|
|
if (cm->mcomp_filter_type == SWITCHABLE)
|
|
read_switchable_interp_probs(pbi);
|
|
#endif
|
|
// Decode the baseline probabilities for decoding reference frame
|
|
cm->prob_intra_coded = (vp8_prob)vp8_read_literal(bc, 8);
|
|
cm->prob_last_coded = (vp8_prob)vp8_read_literal(bc, 8);
|
|
cm->prob_gf_coded = (vp8_prob)vp8_read_literal(bc, 8);
|
|
|
|
// Computes a modified set of probabilities for use when reference
|
|
// frame prediction fails.
|
|
compute_mod_refprobs(cm);
|
|
|
|
pbi->common.comp_pred_mode = vp8_read(bc, 128);
|
|
if (cm->comp_pred_mode)
|
|
cm->comp_pred_mode += vp8_read(bc, 128);
|
|
if (cm->comp_pred_mode == HYBRID_PREDICTION) {
|
|
int i;
|
|
for (i = 0; i < COMP_PRED_CONTEXTS; i++)
|
|
cm->prob_comppred[i] = (vp8_prob)vp8_read_literal(bc, 8);
|
|
}
|
|
|
|
if (vp8_read_bit(bc)) {
|
|
int i = 0;
|
|
|
|
do {
|
|
cm->fc.ymode_prob[i] = (vp8_prob) vp8_read_literal(bc, 8);
|
|
} while (++i < VP8_YMODES - 1);
|
|
}
|
|
#if CONFIG_NEWMVENTROPY
|
|
read_nmvprobs(bc, nmvc, xd->allow_high_precision_mv);
|
|
#else
|
|
if (xd->allow_high_precision_mv)
|
|
read_mvcontexts_hp(bc, mvc_hp);
|
|
else
|
|
read_mvcontexts(bc, mvc);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// 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 void read_mb_segment_id(VP8D_COMP *pbi,
|
|
int mb_row, int mb_col) {
|
|
VP8_COMMON *const cm = & pbi->common;
|
|
MACROBLOCKD *const xd = & pbi->mb;
|
|
vp8_reader *const bc = xd->current_bc;
|
|
MODE_INFO *mi = xd->mode_info_context;
|
|
MB_MODE_INFO *mbmi = &mi->mbmi;
|
|
int index = mb_row * pbi->common.mb_cols + mb_col;
|
|
|
|
if (xd->segmentation_enabled) {
|
|
if (xd->update_mb_segmentation_map) {
|
|
// Is temporal coding of the segment id for this mb enabled.
|
|
if (cm->temporal_update) {
|
|
// Get the context based probability for reading the
|
|
// prediction status flag
|
|
vp8_prob pred_prob =
|
|
get_pred_prob(cm, xd, PRED_SEG_ID);
|
|
|
|
// Read the prediction status flag
|
|
unsigned char seg_pred_flag =
|
|
(unsigned char)vp8_read(bc, pred_prob);
|
|
|
|
// Store the prediction flag.
|
|
set_pred_flag(xd, PRED_SEG_ID, seg_pred_flag);
|
|
|
|
// If the value is flagged as correctly predicted
|
|
// then use the predicted value
|
|
if (seg_pred_flag) {
|
|
mbmi->segment_id = get_pred_mb_segid(cm, index);
|
|
}
|
|
// Else .... decode it explicitly
|
|
else {
|
|
vp8_read_mb_segid(bc, mbmi, xd);
|
|
}
|
|
}
|
|
// Normal unpredicted coding mode
|
|
else {
|
|
vp8_read_mb_segid(bc, mbmi, xd);
|
|
}
|
|
#if CONFIG_SUPERBLOCKS
|
|
if (mbmi->encoded_as_sb) {
|
|
cm->last_frame_seg_map[index] =
|
|
cm->last_frame_seg_map[index + 1] =
|
|
cm->last_frame_seg_map[index + cm->mb_cols] =
|
|
cm->last_frame_seg_map[index + cm->mb_cols + 1] = mbmi->segment_id;
|
|
} else
|
|
#endif
|
|
{
|
|
cm->last_frame_seg_map[index] = mbmi->segment_id;
|
|
}
|
|
} else {
|
|
#if CONFIG_SUPERBLOCKS
|
|
if (mbmi->encoded_as_sb) {
|
|
mbmi->segment_id =
|
|
cm->last_frame_seg_map[index] &&
|
|
cm->last_frame_seg_map[index + 1] &&
|
|
cm->last_frame_seg_map[index + cm->mb_cols] &&
|
|
cm->last_frame_seg_map[index + cm->mb_cols + 1];
|
|
} else
|
|
#endif
|
|
{
|
|
mbmi->segment_id = cm->last_frame_seg_map[index];
|
|
}
|
|
}
|
|
} else {
|
|
// The encoder explicitly sets the segment_id to 0
|
|
// when segmentation is disabled
|
|
mbmi->segment_id = 0;
|
|
}
|
|
}
|
|
|
|
static void read_mb_modes_mv(VP8D_COMP *pbi, MODE_INFO *mi, MB_MODE_INFO *mbmi,
|
|
MODE_INFO *prev_mi,
|
|
int mb_row, int mb_col) {
|
|
VP8_COMMON *const cm = & pbi->common;
|
|
#if CONFIG_NEWMVENTROPY
|
|
nmv_context *const nmvc = &pbi->common.fc.nmvc;
|
|
#else
|
|
MV_CONTEXT *const mvc = pbi->common.fc.mvc;
|
|
MV_CONTEXT_HP *const mvc_hp = pbi->common.fc.mvc_hp;
|
|
#endif
|
|
const int mis = pbi->common.mode_info_stride;
|
|
MACROBLOCKD *const xd = & pbi->mb;
|
|
vp8_reader *const bc = xd->current_bc;
|
|
|
|
int_mv *const mv = & mbmi->mv;
|
|
int mb_to_left_edge;
|
|
int mb_to_right_edge;
|
|
int mb_to_top_edge;
|
|
int mb_to_bottom_edge;
|
|
|
|
mb_to_top_edge = xd->mb_to_top_edge;
|
|
mb_to_bottom_edge = xd->mb_to_bottom_edge;
|
|
mb_to_top_edge -= LEFT_TOP_MARGIN;
|
|
mb_to_bottom_edge += RIGHT_BOTTOM_MARGIN;
|
|
mbmi->need_to_clamp_mvs = 0;
|
|
mbmi->need_to_clamp_secondmv = 0;
|
|
mbmi->second_ref_frame = 0;
|
|
/* 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
|
|
*/
|
|
xd->mb_to_left_edge =
|
|
mb_to_left_edge = -((mb_col * 16) << 3);
|
|
mb_to_left_edge -= LEFT_TOP_MARGIN;
|
|
|
|
xd->mb_to_right_edge =
|
|
mb_to_right_edge = ((pbi->common.mb_cols - 1 - mb_col) * 16) << 3;
|
|
mb_to_right_edge += RIGHT_BOTTOM_MARGIN;
|
|
|
|
// 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;
|
|
|
|
// Read the macroblock segment id.
|
|
read_mb_segment_id(pbi, mb_row, mb_col);
|
|
|
|
if (pbi->common.mb_no_coeff_skip &&
|
|
(!segfeature_active(xd,
|
|
mbmi->segment_id, SEG_LVL_EOB) ||
|
|
(get_segdata(xd, mbmi->segment_id, SEG_LVL_EOB) != 0))) {
|
|
// Read the macroblock coeff skip flag if this feature is in use,
|
|
// else default to 0
|
|
mbmi->mb_skip_coeff = vp8_read(bc, get_pred_prob(cm, xd, PRED_MBSKIP));
|
|
} else {
|
|
if (segfeature_active(xd,
|
|
mbmi->segment_id, SEG_LVL_EOB) &&
|
|
(get_segdata(xd, mbmi->segment_id, SEG_LVL_EOB) == 0)) {
|
|
mbmi->mb_skip_coeff = 1;
|
|
} else
|
|
mbmi->mb_skip_coeff = 0;
|
|
}
|
|
|
|
// Read the reference frame
|
|
mbmi->ref_frame = read_ref_frame(pbi, bc, mbmi->segment_id);
|
|
|
|
// If reference frame is an Inter frame
|
|
if (mbmi->ref_frame) {
|
|
int rct[4];
|
|
int_mv nearest, nearby, best_mv;
|
|
int_mv nearest_second, nearby_second, best_mv_second;
|
|
vp8_prob mv_ref_p [VP8_MVREFS - 1];
|
|
|
|
#if CONFIG_NEWBESTREFMV
|
|
int recon_y_stride, recon_yoffset;
|
|
int recon_uv_stride, recon_uvoffset;
|
|
#endif
|
|
|
|
vp8_find_near_mvs(xd, mi,
|
|
prev_mi,
|
|
&nearest, &nearby, &best_mv, rct,
|
|
mbmi->ref_frame, cm->ref_frame_sign_bias);
|
|
|
|
#if CONFIG_NEWBESTREFMV
|
|
{
|
|
int ref_fb_idx;
|
|
MV_REFERENCE_FRAME ref_frame = mbmi->ref_frame;
|
|
|
|
/* Select the appropriate reference frame for this MB */
|
|
if (ref_frame == LAST_FRAME)
|
|
ref_fb_idx = cm->lst_fb_idx;
|
|
else if (ref_frame == GOLDEN_FRAME)
|
|
ref_fb_idx = cm->gld_fb_idx;
|
|
else
|
|
ref_fb_idx = cm->alt_fb_idx;
|
|
|
|
recon_y_stride = cm->yv12_fb[ref_fb_idx].y_stride ;
|
|
recon_uv_stride = cm->yv12_fb[ref_fb_idx].uv_stride;
|
|
|
|
recon_yoffset = (mb_row * recon_y_stride * 16) + (mb_col * 16);
|
|
recon_uvoffset = (mb_row * recon_uv_stride * 8) + (mb_col * 8);
|
|
|
|
xd->pre.y_buffer = cm->yv12_fb[ref_fb_idx].y_buffer + recon_yoffset;
|
|
xd->pre.u_buffer = cm->yv12_fb[ref_fb_idx].u_buffer + recon_uvoffset;
|
|
xd->pre.v_buffer = cm->yv12_fb[ref_fb_idx].v_buffer + recon_uvoffset;
|
|
|
|
// Update stats on relative distance of chosen vector to the
|
|
// possible best reference vectors.
|
|
{
|
|
find_mv_refs(xd, mi, prev_mi,
|
|
ref_frame, mbmi->ref_mvs[ref_frame],
|
|
cm->ref_frame_sign_bias );
|
|
}
|
|
|
|
vp8_find_best_ref_mvs(xd,
|
|
xd->pre.y_buffer,
|
|
recon_y_stride,
|
|
mbmi->ref_mvs[ref_frame],
|
|
&best_mv, &nearest, &nearby);
|
|
}
|
|
#endif
|
|
|
|
vp8_mv_ref_probs(&pbi->common, mv_ref_p, rct);
|
|
|
|
// Is the segment level mode feature enabled for this segment
|
|
if (segfeature_active(xd, mbmi->segment_id, SEG_LVL_MODE)) {
|
|
mbmi->mode =
|
|
get_segdata(xd, mbmi->segment_id, SEG_LVL_MODE);
|
|
} else {
|
|
#if CONFIG_SUPERBLOCKS
|
|
if (mbmi->encoded_as_sb) {
|
|
mbmi->mode = read_sb_mv_ref(bc, mv_ref_p);
|
|
} else
|
|
#endif
|
|
mbmi->mode = read_mv_ref(bc, mv_ref_p);
|
|
|
|
vp8_accum_mv_refs(&pbi->common, mbmi->mode, rct);
|
|
}
|
|
|
|
#if CONFIG_PRED_FILTER
|
|
if (mbmi->mode >= NEARESTMV && mbmi->mode < SPLITMV) {
|
|
// Is the prediction filter enabled
|
|
if (cm->pred_filter_mode == 2)
|
|
mbmi->pred_filter_enabled =
|
|
vp8_read(bc, cm->prob_pred_filter_off);
|
|
else
|
|
mbmi->pred_filter_enabled = cm->pred_filter_mode;
|
|
}
|
|
#endif
|
|
#if CONFIG_SWITCHABLE_INTERP
|
|
if (mbmi->mode >= NEARESTMV && mbmi->mode <= SPLITMV)
|
|
{
|
|
if (cm->mcomp_filter_type == SWITCHABLE) {
|
|
mbmi->interp_filter = vp8_switchable_interp[
|
|
vp8_treed_read(bc, vp8_switchable_interp_tree,
|
|
get_pred_probs(cm, xd, PRED_SWITCHABLE_INTERP))];
|
|
//printf("Reading: %d\n", mbmi->interp_filter);
|
|
} else {
|
|
mbmi->interp_filter = cm->mcomp_filter_type;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (cm->comp_pred_mode == COMP_PREDICTION_ONLY ||
|
|
(cm->comp_pred_mode == HYBRID_PREDICTION &&
|
|
vp8_read(bc, 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 CONFIG_NEWBESTREFMV
|
|
if (mbmi->second_ref_frame) {
|
|
int second_ref_fb_idx;
|
|
/* Select the appropriate reference frame for this MB */
|
|
if (mbmi->second_ref_frame == LAST_FRAME)
|
|
second_ref_fb_idx = cm->lst_fb_idx;
|
|
else if (mbmi->second_ref_frame ==
|
|
GOLDEN_FRAME)
|
|
second_ref_fb_idx = cm->gld_fb_idx;
|
|
else
|
|
second_ref_fb_idx = cm->alt_fb_idx;
|
|
|
|
xd->second_pre.y_buffer =
|
|
cm->yv12_fb[second_ref_fb_idx].y_buffer + recon_yoffset;
|
|
xd->second_pre.u_buffer =
|
|
cm->yv12_fb[second_ref_fb_idx].u_buffer + recon_uvoffset;
|
|
xd->second_pre.v_buffer =
|
|
cm->yv12_fb[second_ref_fb_idx].v_buffer + recon_uvoffset;
|
|
vp8_find_near_mvs(xd, mi, prev_mi,
|
|
&nearest_second, &nearby_second, &best_mv_second,
|
|
rct,
|
|
mbmi->second_ref_frame,
|
|
cm->ref_frame_sign_bias);
|
|
|
|
// Update stats on relative distance of chosen vector to the
|
|
// possible best reference vectors.
|
|
{
|
|
MV_REFERENCE_FRAME ref_frame = mbmi->second_ref_frame;
|
|
|
|
find_mv_refs(xd, mi, prev_mi,
|
|
ref_frame, mbmi->ref_mvs[ref_frame],
|
|
cm->ref_frame_sign_bias );
|
|
}
|
|
|
|
vp8_find_best_ref_mvs(xd,
|
|
xd->second_pre.y_buffer,
|
|
recon_y_stride,
|
|
mbmi->ref_mvs[mbmi->second_ref_frame],
|
|
&best_mv_second,
|
|
&nearest_second,
|
|
&nearby_second);
|
|
}
|
|
#else
|
|
vp8_find_near_mvs(xd, mi, prev_mi,
|
|
&nearest_second, &nearby_second, &best_mv_second,
|
|
rct,
|
|
mbmi->second_ref_frame,
|
|
pbi->common.ref_frame_sign_bias);
|
|
#endif
|
|
} else {
|
|
mbmi->second_ref_frame = 0;
|
|
}
|
|
|
|
mbmi->uv_mode = DC_PRED;
|
|
switch (mbmi->mode) {
|
|
case SPLITMV: {
|
|
const int s = mbmi->partitioning =
|
|
vp8_treed_read(bc, vp8_mbsplit_tree, cm->fc.mbsplit_prob);
|
|
const int num_p = vp8_mbsplit_count [s];
|
|
int j = 0;
|
|
cm->fc.mbsplit_counts[s]++;
|
|
|
|
mbmi->need_to_clamp_mvs = 0;
|
|
do { /* for each subset j */
|
|
int_mv leftmv, abovemv, second_leftmv, second_abovemv;
|
|
int_mv blockmv, secondmv;
|
|
int k; /* first block in subset j */
|
|
int mv_contz;
|
|
int blockmode;
|
|
|
|
k = vp8_mbsplit_offset[s][j];
|
|
|
|
leftmv.as_int = left_block_mv(mi, k);
|
|
abovemv.as_int = above_block_mv(mi, k, mis);
|
|
if (mbmi->second_ref_frame) {
|
|
second_leftmv.as_int = left_block_second_mv(mi, k);
|
|
second_abovemv.as_int = above_block_second_mv(mi, k, mis);
|
|
}
|
|
mv_contz = vp8_mv_cont(&leftmv, &abovemv);
|
|
blockmode = sub_mv_ref(bc, cm->fc.sub_mv_ref_prob [mv_contz]);
|
|
cm->fc.sub_mv_ref_counts[mv_contz][blockmode - LEFT4X4]++;
|
|
|
|
switch (blockmode) {
|
|
case NEW4X4:
|
|
#if CONFIG_NEWMVENTROPY
|
|
read_nmv(bc, &blockmv.as_mv, &best_mv.as_mv, nmvc);
|
|
read_nmv_fp(bc, &blockmv.as_mv, &best_mv.as_mv, nmvc,
|
|
xd->allow_high_precision_mv);
|
|
vp8_increment_nmv(&blockmv.as_mv, &best_mv.as_mv,
|
|
&cm->fc.NMVcount, xd->allow_high_precision_mv);
|
|
#else
|
|
if (xd->allow_high_precision_mv) {
|
|
read_mv_hp(bc, &blockmv.as_mv, (const MV_CONTEXT_HP *) mvc_hp);
|
|
cm->fc.MVcount_hp[0][mv_max_hp + (blockmv.as_mv.row)]++;
|
|
cm->fc.MVcount_hp[1][mv_max_hp + (blockmv.as_mv.col)]++;
|
|
} else {
|
|
read_mv(bc, &blockmv.as_mv, (const MV_CONTEXT *) mvc);
|
|
cm->fc.MVcount[0][mv_max + (blockmv.as_mv.row >> 1)]++;
|
|
cm->fc.MVcount[1][mv_max + (blockmv.as_mv.col >> 1)]++;
|
|
}
|
|
#endif /* CONFIG_NEWMVENTROPY */
|
|
blockmv.as_mv.row += best_mv.as_mv.row;
|
|
blockmv.as_mv.col += best_mv.as_mv.col;
|
|
|
|
if (mbmi->second_ref_frame) {
|
|
#if CONFIG_NEWMVENTROPY
|
|
read_nmv(bc, &secondmv.as_mv, &best_mv_second.as_mv, nmvc);
|
|
read_nmv_fp(bc, &secondmv.as_mv, &best_mv_second.as_mv, nmvc,
|
|
xd->allow_high_precision_mv);
|
|
vp8_increment_nmv(&secondmv.as_mv, &best_mv_second.as_mv,
|
|
&cm->fc.NMVcount, xd->allow_high_precision_mv);
|
|
#else
|
|
if (xd->allow_high_precision_mv) {
|
|
read_mv_hp(bc, &secondmv.as_mv, (const MV_CONTEXT_HP *) mvc_hp);
|
|
cm->fc.MVcount_hp[0][mv_max_hp + (secondmv.as_mv.row)]++;
|
|
cm->fc.MVcount_hp[1][mv_max_hp + (secondmv.as_mv.col)]++;
|
|
} else {
|
|
read_mv(bc, &secondmv.as_mv, (const MV_CONTEXT *) mvc);
|
|
cm->fc.MVcount[0][mv_max + (secondmv.as_mv.row >> 1)]++;
|
|
cm->fc.MVcount[1][mv_max + (secondmv.as_mv.col >> 1)]++;
|
|
}
|
|
#endif /* CONFIG_NEWMVENTROPY */
|
|
secondmv.as_mv.row += best_mv_second.as_mv.row;
|
|
secondmv.as_mv.col += best_mv_second.as_mv.col;
|
|
}
|
|
#ifdef VPX_MODE_COUNT
|
|
vp8_mv_cont_count[mv_contz][3]++;
|
|
#endif
|
|
break;
|
|
case LEFT4X4:
|
|
blockmv.as_int = leftmv.as_int;
|
|
if (mbmi->second_ref_frame)
|
|
secondmv.as_int = second_leftmv.as_int;
|
|
#ifdef VPX_MODE_COUNT
|
|
vp8_mv_cont_count[mv_contz][0]++;
|
|
#endif
|
|
break;
|
|
case ABOVE4X4:
|
|
blockmv.as_int = abovemv.as_int;
|
|
if (mbmi->second_ref_frame)
|
|
secondmv.as_int = second_abovemv.as_int;
|
|
#ifdef VPX_MODE_COUNT
|
|
vp8_mv_cont_count[mv_contz][1]++;
|
|
#endif
|
|
break;
|
|
case ZERO4X4:
|
|
blockmv.as_int = 0;
|
|
if (mbmi->second_ref_frame)
|
|
secondmv.as_int = 0;
|
|
#ifdef VPX_MODE_COUNT
|
|
vp8_mv_cont_count[mv_contz][2]++;
|
|
#endif
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
mbmi->need_to_clamp_mvs |= vp8_check_mv_bounds(&blockmv,
|
|
mb_to_left_edge,
|
|
mb_to_right_edge,
|
|
mb_to_top_edge,
|
|
mb_to_bottom_edge);
|
|
if (mbmi->second_ref_frame) {
|
|
mbmi->need_to_clamp_mvs |= vp8_check_mv_bounds(&secondmv,
|
|
mb_to_left_edge,
|
|
mb_to_right_edge,
|
|
mb_to_top_edge,
|
|
mb_to_bottom_edge);
|
|
}
|
|
|
|
{
|
|
/* Fill (uniform) modes, mvs of jth subset.
|
|
Must do it here because ensuing subsets can
|
|
refer back to us via "left" or "above". */
|
|
const unsigned char *fill_offset;
|
|
unsigned int fill_count = mbsplit_fill_count[s];
|
|
|
|
fill_offset = &mbsplit_fill_offset[s][(unsigned char)j * mbsplit_fill_count[s]];
|
|
|
|
do {
|
|
mi->bmi[ *fill_offset].as_mv.first.as_int = blockmv.as_int;
|
|
if (mbmi->second_ref_frame)
|
|
mi->bmi[ *fill_offset].as_mv.second.as_int = secondmv.as_int;
|
|
fill_offset++;
|
|
} while (--fill_count);
|
|
}
|
|
|
|
} while (++j < num_p);
|
|
}
|
|
|
|
mv->as_int = mi->bmi[15].as_mv.first.as_int;
|
|
mbmi->mv[1].as_int = mi->bmi[15].as_mv.second.as_int;
|
|
|
|
break; /* done with SPLITMV */
|
|
|
|
case NEARMV:
|
|
mv->as_int = nearby.as_int;
|
|
/* Clip "next_nearest" so that it does not extend to far out of image */
|
|
vp8_clamp_mv(mv, mb_to_left_edge, mb_to_right_edge,
|
|
mb_to_top_edge, mb_to_bottom_edge);
|
|
if (mbmi->second_ref_frame) {
|
|
mbmi->mv[1].as_int = nearby_second.as_int;
|
|
vp8_clamp_mv(&mbmi->mv[1], mb_to_left_edge, mb_to_right_edge,
|
|
mb_to_top_edge, mb_to_bottom_edge);
|
|
}
|
|
break;
|
|
|
|
case NEARESTMV:
|
|
mv->as_int = nearest.as_int;
|
|
/* Clip "next_nearest" so that it does not extend to far out of image */
|
|
vp8_clamp_mv(mv, mb_to_left_edge, mb_to_right_edge,
|
|
mb_to_top_edge, mb_to_bottom_edge);
|
|
if (mbmi->second_ref_frame) {
|
|
mbmi->mv[1].as_int = nearest_second.as_int;
|
|
vp8_clamp_mv(&mbmi->mv[1], mb_to_left_edge, mb_to_right_edge,
|
|
mb_to_top_edge, mb_to_bottom_edge);
|
|
}
|
|
break;
|
|
|
|
case ZEROMV:
|
|
mv->as_int = 0;
|
|
if (mbmi->second_ref_frame)
|
|
mbmi->mv[1].as_int = 0;
|
|
break;
|
|
|
|
case NEWMV:
|
|
#if CONFIG_NEWMVENTROPY
|
|
read_nmv(bc, &mv->as_mv, &best_mv.as_mv, nmvc);
|
|
read_nmv_fp(bc, &mv->as_mv, &best_mv.as_mv, nmvc,
|
|
xd->allow_high_precision_mv);
|
|
vp8_increment_nmv(&mv->as_mv, &best_mv.as_mv, &cm->fc.NMVcount,
|
|
xd->allow_high_precision_mv);
|
|
#else
|
|
if (xd->allow_high_precision_mv) {
|
|
read_mv_hp(bc, &mv->as_mv, (const MV_CONTEXT_HP *) mvc_hp);
|
|
cm->fc.MVcount_hp[0][mv_max_hp + (mv->as_mv.row)]++;
|
|
cm->fc.MVcount_hp[1][mv_max_hp + (mv->as_mv.col)]++;
|
|
} else {
|
|
read_mv(bc, &mv->as_mv, (const MV_CONTEXT *) mvc);
|
|
cm->fc.MVcount[0][mv_max + (mv->as_mv.row >> 1)]++;
|
|
cm->fc.MVcount[1][mv_max + (mv->as_mv.col >> 1)]++;
|
|
}
|
|
#endif /* CONFIG_NEWMVENTROPY */
|
|
mv->as_mv.row += best_mv.as_mv.row;
|
|
mv->as_mv.col += best_mv.as_mv.col;
|
|
|
|
/* Don't need to check this on NEARMV and NEARESTMV modes
|
|
* since those modes clamp the MV. The NEWMV mode does not,
|
|
* so signal to the prediction stage whether special
|
|
* handling may be required.
|
|
*/
|
|
mbmi->need_to_clamp_mvs = vp8_check_mv_bounds(mv,
|
|
mb_to_left_edge,
|
|
mb_to_right_edge,
|
|
mb_to_top_edge,
|
|
mb_to_bottom_edge);
|
|
if (mbmi->second_ref_frame) {
|
|
#if CONFIG_NEWMVENTROPY
|
|
read_nmv(bc, &mbmi->mv[1].as_mv, &best_mv_second.as_mv, nmvc);
|
|
read_nmv_fp(bc, &mbmi->mv[1].as_mv, &best_mv_second.as_mv, nmvc,
|
|
xd->allow_high_precision_mv);
|
|
vp8_increment_nmv(&mbmi->mv[1].as_mv, &best_mv_second.as_mv,
|
|
&cm->fc.NMVcount, xd->allow_high_precision_mv);
|
|
#else
|
|
if (xd->allow_high_precision_mv) {
|
|
read_mv_hp(bc, &mbmi->mv[1].as_mv, (const MV_CONTEXT_HP *) mvc_hp);
|
|
cm->fc.MVcount_hp[0][mv_max_hp + (mbmi->mv[1].as_mv.row)]++;
|
|
cm->fc.MVcount_hp[1][mv_max_hp + (mbmi->mv[1].as_mv.col)]++;
|
|
} else {
|
|
read_mv(bc, &mbmi->mv[1].as_mv, (const MV_CONTEXT *) mvc);
|
|
cm->fc.MVcount[0][mv_max + (mbmi->mv[1].as_mv.row >> 1)]++;
|
|
cm->fc.MVcount[1][mv_max + (mbmi->mv[1].as_mv.col >> 1)]++;
|
|
}
|
|
#endif /* CONFIG_NEWMVENTROPY */
|
|
mbmi->mv[1].as_mv.row += best_mv_second.as_mv.row;
|
|
mbmi->mv[1].as_mv.col += best_mv_second.as_mv.col;
|
|
mbmi->need_to_clamp_secondmv |=
|
|
vp8_check_mv_bounds(&mbmi->mv[1],
|
|
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 */
|
|
mbmi->mv[0].as_int = 0;
|
|
|
|
if (segfeature_active(xd, mbmi->segment_id, SEG_LVL_MODE))
|
|
mbmi->mode = (MB_PREDICTION_MODE)
|
|
get_segdata(xd, mbmi->segment_id, SEG_LVL_MODE);
|
|
else {
|
|
// FIXME write using SB mode tree
|
|
mbmi->mode = (MB_PREDICTION_MODE)
|
|
vp8_read_ymode(bc, pbi->common.fc.ymode_prob);
|
|
pbi->common.fc.ymode_counts[mbmi->mode]++;
|
|
}
|
|
#if CONFIG_COMP_INTRA_PRED
|
|
mbmi->second_mode = (MB_PREDICTION_MODE)(DC_PRED - 1);
|
|
#endif
|
|
|
|
// If MB mode is BPRED read the block modes
|
|
if (mbmi->mode == B_PRED) {
|
|
int j = 0;
|
|
#if CONFIG_COMP_INTRA_PRED
|
|
int use_comp_pred = vp8_read(bc, 128);
|
|
#endif
|
|
do {
|
|
mi->bmi[j].as_mode.first = (B_PREDICTION_MODE)vp8_read_bmode(bc, pbi->common.fc.bmode_prob);
|
|
pbi->common.fc.bmode_counts[mi->bmi[j].as_mode.first]++;
|
|
#if CONFIG_COMP_INTRA_PRED
|
|
if (use_comp_pred) {
|
|
mi->bmi[j].as_mode.second = (B_PREDICTION_MODE)vp8_read_bmode(bc, pbi->common.fc.bmode_prob);
|
|
} else {
|
|
mi->bmi[j].as_mode.second = (B_PREDICTION_MODE)(B_DC_PRED - 1);
|
|
}
|
|
#endif
|
|
} while (++j < 16);
|
|
}
|
|
|
|
if (mbmi->mode == I8X8_PRED) {
|
|
int i;
|
|
int mode8x8;
|
|
for (i = 0; i < 4; i++) {
|
|
int ib = vp8_i8x8_block[i];
|
|
mode8x8 = vp8_read_i8x8_mode(bc, pbi->common.fc.i8x8_mode_prob);
|
|
mi->bmi[ib + 0].as_mode.first = mode8x8;
|
|
mi->bmi[ib + 1].as_mode.first = mode8x8;
|
|
mi->bmi[ib + 4].as_mode.first = mode8x8;
|
|
mi->bmi[ib + 5].as_mode.first = mode8x8;
|
|
pbi->common.fc.i8x8_mode_counts[mode8x8]++;
|
|
#if CONFIG_COMP_INTRA_PRED
|
|
mi->bmi[ib + 0].as_mode.second = (MB_PREDICTION_MODE)(DC_PRED - 1);
|
|
mi->bmi[ib + 1].as_mode.second = (MB_PREDICTION_MODE)(DC_PRED - 1);
|
|
mi->bmi[ib + 4].as_mode.second = (MB_PREDICTION_MODE)(DC_PRED - 1);
|
|
mi->bmi[ib + 5].as_mode.second = (MB_PREDICTION_MODE)(DC_PRED - 1);
|
|
#endif
|
|
}
|
|
} else {
|
|
mbmi->uv_mode = (MB_PREDICTION_MODE)vp8_read_uv_mode(
|
|
bc, pbi->common.fc.uv_mode_prob[mbmi->mode]);
|
|
pbi->common.fc.uv_mode_counts[mbmi->mode][mbmi->uv_mode]++;
|
|
}
|
|
|
|
#if CONFIG_COMP_INTRA_PRED
|
|
mbmi->second_uv_mode = (MB_PREDICTION_MODE)(DC_PRED - 1);
|
|
#endif
|
|
}
|
|
|
|
#if CONFIG_TX_SELECT
|
|
if (cm->txfm_mode == TX_MODE_SELECT && mbmi->mb_skip_coeff == 0 &&
|
|
((mbmi->ref_frame == INTRA_FRAME && mbmi->mode <= I8X8_PRED) ||
|
|
(mbmi->ref_frame != INTRA_FRAME && mbmi->mode != SPLITMV))) {
|
|
// FIXME(rbultje) code ternary symbol once all experiments are merged
|
|
mbmi->txfm_size = vp8_read(bc, cm->prob_tx[0]);
|
|
if (mbmi->txfm_size != TX_4X4 && mbmi->mode != I8X8_PRED)
|
|
mbmi->txfm_size += vp8_read(bc, cm->prob_tx[1]);
|
|
} else
|
|
#endif
|
|
if (cm->txfm_mode >= ALLOW_16X16 &&
|
|
((mbmi->ref_frame == INTRA_FRAME && mbmi->mode <= TM_PRED) ||
|
|
(mbmi->ref_frame != INTRA_FRAME && mbmi->mode != SPLITMV))) {
|
|
mbmi->txfm_size = TX_16X16;
|
|
} else if (cm->txfm_mode >= ALLOW_8X8 &&
|
|
((mbmi->ref_frame == INTRA_FRAME && mbmi->mode != B_PRED) ||
|
|
(mbmi->ref_frame != INTRA_FRAME && mbmi->mode != SPLITMV))) {
|
|
mbmi->txfm_size = TX_8X8;
|
|
} else {
|
|
mbmi->txfm_size = TX_4X4;
|
|
}
|
|
}
|
|
|
|
void vpx_decode_mode_mvs_init(VP8D_COMP *pbi){
|
|
VP8_COMMON *cm = &pbi->common;
|
|
|
|
vpx_memset(cm->mbskip_pred_probs, 0, sizeof(cm->mbskip_pred_probs));
|
|
if (pbi->common.mb_no_coeff_skip) {
|
|
int k;
|
|
for (k = 0; k < MBSKIP_CONTEXTS; ++k)
|
|
cm->mbskip_pred_probs[k] = (vp8_prob)vp8_read_literal(&pbi->bc, 8);
|
|
}
|
|
|
|
mb_mode_mv_init(pbi, &pbi->bc);
|
|
}
|
|
void vpx_decode_mb_mode_mv(VP8D_COMP *pbi,
|
|
MACROBLOCKD *xd,
|
|
int mb_row,
|
|
int mb_col){
|
|
MODE_INFO *mi = xd->mode_info_context;
|
|
MODE_INFO *prev_mi = xd->prev_mode_info_context;
|
|
|
|
if (pbi->common.frame_type == KEY_FRAME)
|
|
vp8_kfread_modes(pbi, mi, mb_row, mb_col);
|
|
else
|
|
read_mb_modes_mv(pbi, mi, &mi->mbmi, prev_mi, mb_row, mb_col);
|
|
}
|