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