| /* |
| 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 "vp10/common/common.h" |
| #include "vp10/common/entropy.h" |
| #include "vp10/common/entropymode.h" |
| #include "vp10/common/entropymv.h" |
| #include "vp10/common/mvref_common.h" |
| #include "vp10/common/pred_common.h" |
| #include "vp10/common/reconinter.h" |
| #include "vp10/common/seg_common.h" |
| |
| #include "vp10/decoder/decodemv.h" |
| #include "vp10/decoder/decodeframe.h" |
| |
| #include "vpx_dsp/vpx_dsp_common.h" |
| |
| static PREDICTION_MODE read_intra_mode(vpx_reader *r, const vpx_prob *p) { |
| return (PREDICTION_MODE)vpx_read_tree(r, vp10_intra_mode_tree, p); |
| } |
| |
| static PREDICTION_MODE read_intra_mode_y(VP10_COMMON *cm, MACROBLOCKD *xd, |
| vpx_reader *r, int size_group) { |
| const PREDICTION_MODE y_mode = |
| read_intra_mode(r, cm->fc->y_mode_prob[size_group]); |
| FRAME_COUNTS *counts = xd->counts; |
| if (counts) |
| ++counts->y_mode[size_group][y_mode]; |
| return y_mode; |
| } |
| |
| static PREDICTION_MODE read_intra_mode_uv(VP10_COMMON *cm, MACROBLOCKD *xd, |
| vpx_reader *r, |
| PREDICTION_MODE y_mode) { |
| const PREDICTION_MODE uv_mode = read_intra_mode(r, |
| cm->fc->uv_mode_prob[y_mode]); |
| FRAME_COUNTS *counts = xd->counts; |
| if (counts) |
| ++counts->uv_mode[y_mode][uv_mode]; |
| return uv_mode; |
| } |
| |
| static PREDICTION_MODE read_inter_mode(VP10_COMMON *cm, MACROBLOCKD *xd, |
| vpx_reader *r, int ctx) { |
| const int mode = vpx_read_tree(r, vp10_inter_mode_tree, |
| cm->fc->inter_mode_probs[ctx]); |
| FRAME_COUNTS *counts = xd->counts; |
| if (counts) |
| ++counts->inter_mode[ctx][mode]; |
| |
| return NEARESTMV + mode; |
| } |
| |
| static int read_segment_id(vpx_reader *r, |
| const struct segmentation_probs *segp) { |
| return vpx_read_tree(r, vp10_segment_tree, segp->tree_probs); |
| } |
| |
| static TX_SIZE read_selected_tx_size(VP10_COMMON *cm, MACROBLOCKD *xd, |
| TX_SIZE max_tx_size, vpx_reader *r) { |
| FRAME_COUNTS *counts = xd->counts; |
| const int ctx = get_tx_size_context(xd); |
| const vpx_prob *tx_probs = get_tx_probs(max_tx_size, ctx, &cm->fc->tx_probs); |
| int tx_size = vpx_read(r, tx_probs[0]); |
| if (tx_size != TX_4X4 && max_tx_size >= TX_16X16) { |
| tx_size += vpx_read(r, tx_probs[1]); |
| if (tx_size != TX_8X8 && max_tx_size >= TX_32X32) |
| tx_size += vpx_read(r, tx_probs[2]); |
| } |
| |
| if (counts) |
| ++get_tx_counts(max_tx_size, ctx, &counts->tx)[tx_size]; |
| return (TX_SIZE)tx_size; |
| } |
| |
| static TX_SIZE read_tx_size(VP10_COMMON *cm, MACROBLOCKD *xd, |
| int allow_select, vpx_reader *r) { |
| TX_MODE tx_mode = cm->tx_mode; |
| BLOCK_SIZE bsize = xd->mi[0]->mbmi.sb_type; |
| const TX_SIZE max_tx_size = max_txsize_lookup[bsize]; |
| if (xd->lossless[xd->mi[0]->mbmi.segment_id]) |
| return TX_4X4; |
| if (allow_select && tx_mode == TX_MODE_SELECT && bsize >= BLOCK_8X8) |
| return read_selected_tx_size(cm, xd, max_tx_size, r); |
| else |
| return VPXMIN(max_tx_size, tx_mode_to_biggest_tx_size[tx_mode]); |
| } |
| |
| static int dec_get_segment_id(const VP10_COMMON *cm, const uint8_t *segment_ids, |
| int mi_offset, int x_mis, int y_mis) { |
| int x, y, segment_id = INT_MAX; |
| |
| for (y = 0; y < y_mis; y++) |
| for (x = 0; x < x_mis; x++) |
| segment_id = |
| VPXMIN(segment_id, segment_ids[mi_offset + y * cm->mi_cols + x]); |
| |
| assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); |
| return segment_id; |
| } |
| |
| static void set_segment_id(VP10_COMMON *cm, int mi_offset, |
| int x_mis, int y_mis, int segment_id) { |
| int x, y; |
| |
| assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); |
| |
| for (y = 0; y < y_mis; y++) |
| for (x = 0; x < x_mis; x++) |
| cm->current_frame_seg_map[mi_offset + y * cm->mi_cols + x] = segment_id; |
| } |
| |
| static int read_intra_segment_id(VP10_COMMON *const cm, MACROBLOCKD *const xd, |
| int mi_offset, int x_mis, int y_mis, |
| vpx_reader *r) { |
| struct segmentation *const seg = &cm->seg; |
| #if CONFIG_MISC_FIXES |
| FRAME_COUNTS *counts = xd->counts; |
| struct segmentation_probs *const segp = &cm->fc->seg; |
| #else |
| struct segmentation_probs *const segp = &cm->segp; |
| #endif |
| int segment_id; |
| |
| #if !CONFIG_MISC_FIXES |
| (void) xd; |
| #endif |
| |
| if (!seg->enabled) |
| return 0; // Default for disabled segmentation |
| |
| assert(seg->update_map && !seg->temporal_update); |
| |
| segment_id = read_segment_id(r, segp); |
| #if CONFIG_MISC_FIXES |
| if (counts) |
| ++counts->seg.tree_total[segment_id]; |
| #endif |
| set_segment_id(cm, mi_offset, x_mis, y_mis, segment_id); |
| return segment_id; |
| } |
| |
| static void copy_segment_id(const VP10_COMMON *cm, |
| const uint8_t *last_segment_ids, |
| uint8_t *current_segment_ids, |
| int mi_offset, int x_mis, int y_mis) { |
| int x, y; |
| |
| for (y = 0; y < y_mis; y++) |
| for (x = 0; x < x_mis; x++) |
| current_segment_ids[mi_offset + y * cm->mi_cols + x] = last_segment_ids ? |
| last_segment_ids[mi_offset + y * cm->mi_cols + x] : 0; |
| } |
| |
| static int read_inter_segment_id(VP10_COMMON *const cm, MACROBLOCKD *const xd, |
| int mi_row, int mi_col, vpx_reader *r) { |
| struct segmentation *const seg = &cm->seg; |
| #if CONFIG_MISC_FIXES |
| FRAME_COUNTS *counts = xd->counts; |
| struct segmentation_probs *const segp = &cm->fc->seg; |
| #else |
| struct segmentation_probs *const segp = &cm->segp; |
| #endif |
| MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi; |
| int predicted_segment_id, segment_id; |
| const int mi_offset = mi_row * cm->mi_cols + mi_col; |
| const int bw = xd->plane[0].n4_w >> 1; |
| const int bh = xd->plane[0].n4_h >> 1; |
| |
| // TODO(slavarnway): move x_mis, y_mis into xd ????? |
| const int x_mis = VPXMIN(cm->mi_cols - mi_col, bw); |
| const int y_mis = VPXMIN(cm->mi_rows - mi_row, bh); |
| |
| if (!seg->enabled) |
| return 0; // Default for disabled segmentation |
| |
| predicted_segment_id = cm->last_frame_seg_map ? |
| dec_get_segment_id(cm, cm->last_frame_seg_map, mi_offset, x_mis, y_mis) : |
| 0; |
| |
| if (!seg->update_map) { |
| copy_segment_id(cm, cm->last_frame_seg_map, cm->current_frame_seg_map, |
| mi_offset, x_mis, y_mis); |
| return predicted_segment_id; |
| } |
| |
| if (seg->temporal_update) { |
| const int ctx = vp10_get_pred_context_seg_id(xd); |
| const vpx_prob pred_prob = segp->pred_probs[ctx]; |
| mbmi->seg_id_predicted = vpx_read(r, pred_prob); |
| #if CONFIG_MISC_FIXES |
| if (counts) |
| ++counts->seg.pred[ctx][mbmi->seg_id_predicted]; |
| #endif |
| if (mbmi->seg_id_predicted) { |
| segment_id = predicted_segment_id; |
| } else { |
| segment_id = read_segment_id(r, segp); |
| #if CONFIG_MISC_FIXES |
| if (counts) |
| ++counts->seg.tree_mispred[segment_id]; |
| #endif |
| } |
| } else { |
| segment_id = read_segment_id(r, segp); |
| #if CONFIG_MISC_FIXES |
| if (counts) |
| ++counts->seg.tree_total[segment_id]; |
| #endif |
| } |
| set_segment_id(cm, mi_offset, x_mis, y_mis, segment_id); |
| return segment_id; |
| } |
| |
| static int read_skip(VP10_COMMON *cm, const MACROBLOCKD *xd, |
| int segment_id, vpx_reader *r) { |
| if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { |
| return 1; |
| } else { |
| const int ctx = vp10_get_skip_context(xd); |
| const int skip = vpx_read(r, cm->fc->skip_probs[ctx]); |
| FRAME_COUNTS *counts = xd->counts; |
| if (counts) |
| ++counts->skip[ctx][skip]; |
| return skip; |
| } |
| } |
| |
| static void read_intra_frame_mode_info(VP10_COMMON *const cm, |
| MACROBLOCKD *const xd, |
| int mi_row, int mi_col, vpx_reader *r) { |
| MODE_INFO *const mi = xd->mi[0]; |
| MB_MODE_INFO *const mbmi = &mi->mbmi; |
| const MODE_INFO *above_mi = xd->above_mi; |
| const MODE_INFO *left_mi = xd->left_mi; |
| const BLOCK_SIZE bsize = mbmi->sb_type; |
| int i; |
| const int mi_offset = mi_row * cm->mi_cols + mi_col; |
| const int bw = xd->plane[0].n4_w >> 1; |
| const int bh = xd->plane[0].n4_h >> 1; |
| |
| // TODO(slavarnway): move x_mis, y_mis into xd ????? |
| const int x_mis = VPXMIN(cm->mi_cols - mi_col, bw); |
| const int y_mis = VPXMIN(cm->mi_rows - mi_row, bh); |
| |
| mbmi->segment_id = read_intra_segment_id(cm, xd, mi_offset, x_mis, y_mis, r); |
| mbmi->skip = read_skip(cm, xd, mbmi->segment_id, r); |
| mbmi->tx_size = read_tx_size(cm, xd, 1, r); |
| mbmi->ref_frame[0] = INTRA_FRAME; |
| mbmi->ref_frame[1] = NONE; |
| |
| switch (bsize) { |
| case BLOCK_4X4: |
| for (i = 0; i < 4; ++i) |
| mi->bmi[i].as_mode = |
| read_intra_mode(r, get_y_mode_probs(cm, mi, above_mi, left_mi, i)); |
| mbmi->mode = mi->bmi[3].as_mode; |
| break; |
| case BLOCK_4X8: |
| mi->bmi[0].as_mode = mi->bmi[2].as_mode = |
| read_intra_mode(r, get_y_mode_probs(cm, mi, above_mi, left_mi, 0)); |
| mi->bmi[1].as_mode = mi->bmi[3].as_mode = mbmi->mode = |
| read_intra_mode(r, get_y_mode_probs(cm, mi, above_mi, left_mi, 1)); |
| break; |
| case BLOCK_8X4: |
| mi->bmi[0].as_mode = mi->bmi[1].as_mode = |
| read_intra_mode(r, get_y_mode_probs(cm, mi, above_mi, left_mi, 0)); |
| mi->bmi[2].as_mode = mi->bmi[3].as_mode = mbmi->mode = |
| read_intra_mode(r, get_y_mode_probs(cm, mi, above_mi, left_mi, 2)); |
| break; |
| default: |
| mbmi->mode = read_intra_mode(r, |
| get_y_mode_probs(cm, mi, above_mi, left_mi, 0)); |
| } |
| |
| mbmi->uv_mode = read_intra_mode_uv(cm, xd, r, mbmi->mode); |
| |
| if (mbmi->tx_size < TX_32X32 && |
| cm->base_qindex > 0 && !mbmi->skip && |
| !segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { |
| FRAME_COUNTS *counts = xd->counts; |
| TX_TYPE tx_type_nom = intra_mode_to_tx_type_context[mbmi->mode]; |
| mbmi->tx_type = vpx_read_tree( |
| r, vp10_ext_tx_tree, |
| cm->fc->intra_ext_tx_prob[mbmi->tx_size][tx_type_nom]); |
| if (counts) |
| ++counts->intra_ext_tx[mbmi->tx_size][tx_type_nom][mbmi->tx_type]; |
| } else { |
| mbmi->tx_type = DCT_DCT; |
| } |
| } |
| |
| static int read_mv_component(vpx_reader *r, |
| const nmv_component *mvcomp, int usehp) { |
| int mag, d, fr, hp; |
| const int sign = vpx_read(r, mvcomp->sign); |
| const int mv_class = vpx_read_tree(r, vp10_mv_class_tree, mvcomp->classes); |
| const int class0 = mv_class == MV_CLASS_0; |
| |
| // Integer part |
| if (class0) { |
| d = vpx_read_tree(r, vp10_mv_class0_tree, mvcomp->class0); |
| mag = 0; |
| } else { |
| int i; |
| const int n = mv_class + CLASS0_BITS - 1; // number of bits |
| |
| d = 0; |
| for (i = 0; i < n; ++i) |
| d |= vpx_read(r, mvcomp->bits[i]) << i; |
| mag = CLASS0_SIZE << (mv_class + 2); |
| } |
| |
| // Fractional part |
| fr = vpx_read_tree(r, vp10_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 ? vpx_read(r, class0 ? mvcomp->class0_hp : mvcomp->hp) |
| : 1; |
| |
| // Result |
| mag += ((d << 3) | (fr << 1) | hp) + 1; |
| return sign ? -mag : mag; |
| } |
| |
| static INLINE void read_mv(vpx_reader *r, MV *mv, const MV *ref, |
| const nmv_context *ctx, |
| nmv_context_counts *counts, int allow_hp) { |
| const MV_JOINT_TYPE joint_type = |
| (MV_JOINT_TYPE)vpx_read_tree(r, vp10_mv_joint_tree, ctx->joints); |
| const int use_hp = allow_hp && vp10_use_mv_hp(ref); |
| MV diff = {0, 0}; |
| |
| if (mv_joint_vertical(joint_type)) |
| diff.row = read_mv_component(r, &ctx->comps[0], use_hp); |
| |
| if (mv_joint_horizontal(joint_type)) |
| diff.col = read_mv_component(r, &ctx->comps[1], use_hp); |
| |
| vp10_inc_mv(&diff, counts, use_hp); |
| |
| mv->row = ref->row + diff.row; |
| mv->col = ref->col + diff.col; |
| } |
| |
| static REFERENCE_MODE read_block_reference_mode(VP10_COMMON *cm, |
| const MACROBLOCKD *xd, |
| vpx_reader *r) { |
| if (cm->reference_mode == REFERENCE_MODE_SELECT) { |
| const int ctx = vp10_get_reference_mode_context(cm, xd); |
| const REFERENCE_MODE mode = |
| (REFERENCE_MODE)vpx_read(r, cm->fc->comp_inter_prob[ctx]); |
| FRAME_COUNTS *counts = xd->counts; |
| if (counts) |
| ++counts->comp_inter[ctx][mode]; |
| return mode; // SINGLE_REFERENCE or COMPOUND_REFERENCE |
| } else { |
| return cm->reference_mode; |
| } |
| } |
| |
| // Read the referncence frame |
| static void read_ref_frames(VP10_COMMON *const cm, MACROBLOCKD *const xd, |
| vpx_reader *r, |
| int segment_id, MV_REFERENCE_FRAME ref_frame[2]) { |
| FRAME_CONTEXT *const fc = cm->fc; |
| FRAME_COUNTS *counts = xd->counts; |
| |
| if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { |
| ref_frame[0] = (MV_REFERENCE_FRAME)get_segdata(&cm->seg, segment_id, |
| SEG_LVL_REF_FRAME); |
| ref_frame[1] = NONE; |
| } else { |
| const REFERENCE_MODE mode = read_block_reference_mode(cm, xd, r); |
| // FIXME(rbultje) I'm pretty sure this breaks segmentation ref frame coding |
| if (mode == COMPOUND_REFERENCE) { |
| const int idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref]; |
| const int ctx = vp10_get_pred_context_comp_ref_p(cm, xd); |
| const int bit = vpx_read(r, fc->comp_ref_prob[ctx]); |
| if (counts) |
| ++counts->comp_ref[ctx][bit]; |
| ref_frame[idx] = cm->comp_fixed_ref; |
| ref_frame[!idx] = cm->comp_var_ref[bit]; |
| } else if (mode == SINGLE_REFERENCE) { |
| const int ctx0 = vp10_get_pred_context_single_ref_p1(xd); |
| const int bit0 = vpx_read(r, fc->single_ref_prob[ctx0][0]); |
| if (counts) |
| ++counts->single_ref[ctx0][0][bit0]; |
| if (bit0) { |
| const int ctx1 = vp10_get_pred_context_single_ref_p2(xd); |
| const int bit1 = vpx_read(r, fc->single_ref_prob[ctx1][1]); |
| if (counts) |
| ++counts->single_ref[ctx1][1][bit1]; |
| ref_frame[0] = bit1 ? ALTREF_FRAME : GOLDEN_FRAME; |
| } else { |
| ref_frame[0] = LAST_FRAME; |
| } |
| |
| ref_frame[1] = NONE; |
| } else { |
| assert(0 && "Invalid prediction mode."); |
| } |
| } |
| } |
| |
| |
| static INLINE INTERP_FILTER read_switchable_interp_filter( |
| VP10_COMMON *const cm, MACROBLOCKD *const xd, |
| vpx_reader *r) { |
| const int ctx = vp10_get_pred_context_switchable_interp(xd); |
| const INTERP_FILTER type = |
| (INTERP_FILTER)vpx_read_tree(r, vp10_switchable_interp_tree, |
| cm->fc->switchable_interp_prob[ctx]); |
| FRAME_COUNTS *counts = xd->counts; |
| if (counts) |
| ++counts->switchable_interp[ctx][type]; |
| return type; |
| } |
| |
| static void read_intra_block_mode_info(VP10_COMMON *const cm, |
| MACROBLOCKD *const xd, MODE_INFO *mi, |
| vpx_reader *r) { |
| MB_MODE_INFO *const mbmi = &mi->mbmi; |
| const BLOCK_SIZE bsize = mi->mbmi.sb_type; |
| int i; |
| |
| mbmi->ref_frame[0] = INTRA_FRAME; |
| mbmi->ref_frame[1] = NONE; |
| |
| switch (bsize) { |
| case BLOCK_4X4: |
| for (i = 0; i < 4; ++i) |
| mi->bmi[i].as_mode = read_intra_mode_y(cm, xd, r, 0); |
| mbmi->mode = mi->bmi[3].as_mode; |
| break; |
| case BLOCK_4X8: |
| mi->bmi[0].as_mode = mi->bmi[2].as_mode = read_intra_mode_y(cm, xd, |
| r, 0); |
| mi->bmi[1].as_mode = mi->bmi[3].as_mode = mbmi->mode = |
| read_intra_mode_y(cm, xd, r, 0); |
| break; |
| case BLOCK_8X4: |
| mi->bmi[0].as_mode = mi->bmi[1].as_mode = read_intra_mode_y(cm, xd, |
| r, 0); |
| mi->bmi[2].as_mode = mi->bmi[3].as_mode = mbmi->mode = |
| read_intra_mode_y(cm, xd, r, 0); |
| break; |
| default: |
| mbmi->mode = read_intra_mode_y(cm, xd, r, size_group_lookup[bsize]); |
| } |
| |
| mbmi->uv_mode = read_intra_mode_uv(cm, xd, r, mbmi->mode); |
| } |
| |
| static INLINE int is_mv_valid(const MV *mv) { |
| return mv->row > MV_LOW && mv->row < MV_UPP && |
| mv->col > MV_LOW && mv->col < MV_UPP; |
| } |
| |
| static INLINE int assign_mv(VP10_COMMON *cm, MACROBLOCKD *xd, |
| PREDICTION_MODE mode, |
| int_mv mv[2], int_mv ref_mv[2], |
| int_mv nearest_mv[2], int_mv near_mv[2], |
| int is_compound, int allow_hp, vpx_reader *r) { |
| int i; |
| int ret = 1; |
| |
| switch (mode) { |
| case NEWMV: { |
| FRAME_COUNTS *counts = xd->counts; |
| nmv_context_counts *const mv_counts = counts ? &counts->mv : NULL; |
| for (i = 0; i < 1 + is_compound; ++i) { |
| read_mv(r, &mv[i].as_mv, &ref_mv[i].as_mv, &cm->fc->nmvc, mv_counts, |
| allow_hp); |
| ret = ret && is_mv_valid(&mv[i].as_mv); |
| } |
| 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(VP10_COMMON *const cm, MACROBLOCKD *const xd, |
| int segment_id, vpx_reader *r) { |
| if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { |
| return get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME) != INTRA_FRAME; |
| } else { |
| const int ctx = vp10_get_intra_inter_context(xd); |
| const int is_inter = vpx_read(r, cm->fc->intra_inter_prob[ctx]); |
| FRAME_COUNTS *counts = xd->counts; |
| if (counts) |
| ++counts->intra_inter[ctx][is_inter]; |
| return is_inter; |
| } |
| } |
| |
| static void fpm_sync(void *const data, int mi_row) { |
| VP10Decoder *const pbi = (VP10Decoder *)data; |
| vp10_frameworker_wait(pbi->frame_worker_owner, pbi->common.prev_frame, |
| mi_row << MI_BLOCK_SIZE_LOG2); |
| } |
| |
| static void read_inter_block_mode_info(VP10Decoder *const pbi, |
| MACROBLOCKD *const xd, |
| MODE_INFO *const mi, |
| int mi_row, int mi_col, vpx_reader *r) { |
| VP10_COMMON *const cm = &pbi->common; |
| MB_MODE_INFO *const mbmi = &mi->mbmi; |
| const BLOCK_SIZE bsize = mbmi->sb_type; |
| const int allow_hp = cm->allow_high_precision_mv; |
| int_mv nearestmv[2], nearmv[2]; |
| int_mv ref_mvs[MAX_REF_FRAMES][MAX_MV_REF_CANDIDATES]; |
| int ref, is_compound; |
| uint8_t inter_mode_ctx[MAX_REF_FRAMES]; |
| |
| read_ref_frames(cm, xd, r, mbmi->segment_id, mbmi->ref_frame); |
| is_compound = has_second_ref(mbmi); |
| |
| for (ref = 0; ref < 1 + is_compound; ++ref) { |
| const MV_REFERENCE_FRAME frame = mbmi->ref_frame[ref]; |
| RefBuffer *ref_buf = &cm->frame_refs[frame - LAST_FRAME]; |
| |
| xd->block_refs[ref] = ref_buf; |
| if ((!vp10_is_valid_scale(&ref_buf->sf))) |
| vpx_internal_error(xd->error_info, VPX_CODEC_UNSUP_BITSTREAM, |
| "Reference frame has invalid dimensions"); |
| vp10_setup_pre_planes(xd, ref, ref_buf->buf, mi_row, mi_col, |
| &ref_buf->sf); |
| vp10_find_mv_refs(cm, xd, mi, frame, ref_mvs[frame], |
| mi_row, mi_col, fpm_sync, (void *)pbi, inter_mode_ctx); |
| } |
| |
| if (segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { |
| mbmi->mode = ZEROMV; |
| if (bsize < BLOCK_8X8) { |
| vpx_internal_error(xd->error_info, VPX_CODEC_UNSUP_BITSTREAM, |
| "Invalid usage of segement feature on small blocks"); |
| return; |
| } |
| } else { |
| if (bsize >= BLOCK_8X8) |
| mbmi->mode = read_inter_mode(cm, xd, r, |
| inter_mode_ctx[mbmi->ref_frame[0]]); |
| } |
| |
| if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) { |
| for (ref = 0; ref < 1 + is_compound; ++ref) { |
| vp10_find_best_ref_mvs(allow_hp, ref_mvs[mbmi->ref_frame[ref]], |
| &nearestmv[ref], &nearmv[ref]); |
| } |
| } |
| |
| mbmi->interp_filter = (cm->interp_filter == SWITCHABLE) |
| ? read_switchable_interp_filter(cm, xd, r) |
| : cm->interp_filter; |
| |
| if (bsize < BLOCK_8X8) { |
| const int num_4x4_w = 1 << xd->bmode_blocks_wl; |
| const int num_4x4_h = 1 << xd->bmode_blocks_hl; |
| int idx, idy; |
| PREDICTION_MODE b_mode; |
| int_mv nearest_sub8x8[2], near_sub8x8[2]; |
| 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, xd, r, inter_mode_ctx[mbmi->ref_frame[0]]); |
| |
| if (b_mode == NEARESTMV || b_mode == NEARMV) { |
| uint8_t dummy_mode_ctx[MAX_REF_FRAMES]; |
| for (ref = 0; ref < 1 + is_compound; ++ref) |
| vp10_append_sub8x8_mvs_for_idx(cm, xd, j, ref, mi_row, mi_col, |
| &nearest_sub8x8[ref], |
| &near_sub8x8[ref], |
| dummy_mode_ctx); |
| } |
| |
| if (!assign_mv(cm, xd, b_mode, block, nearestmv, |
| nearest_sub8x8, near_sub8x8, |
| 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, xd, mbmi->mode, mbmi->mv, nearestmv, |
| nearestmv, nearmv, is_compound, allow_hp, r); |
| } |
| } |
| |
| static void read_inter_frame_mode_info(VP10Decoder *const pbi, |
| MACROBLOCKD *const xd, |
| int mi_row, int mi_col, vpx_reader *r) { |
| VP10_COMMON *const cm = &pbi->common; |
| MODE_INFO *const mi = xd->mi[0]; |
| 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(cm, xd, mi_row, mi_col, r); |
| mbmi->skip = read_skip(cm, xd, mbmi->segment_id, r); |
| inter_block = read_is_inter_block(cm, xd, mbmi->segment_id, r); |
| mbmi->tx_size = read_tx_size(cm, xd, !mbmi->skip || !inter_block, r); |
| |
| if (inter_block) |
| read_inter_block_mode_info(pbi, xd, mi, mi_row, mi_col, r); |
| else |
| read_intra_block_mode_info(cm, xd, mi, r); |
| |
| if (mbmi->tx_size < TX_32X32 && |
| cm->base_qindex > 0 && !mbmi->skip && |
| !segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { |
| FRAME_COUNTS *counts = xd->counts; |
| if (inter_block) { |
| mbmi->tx_type = vpx_read_tree( |
| r, vp10_ext_tx_tree, |
| cm->fc->inter_ext_tx_prob[mbmi->tx_size]); |
| if (counts) |
| ++counts->inter_ext_tx[mbmi->tx_size][mbmi->tx_type]; |
| } else { |
| const TX_TYPE tx_type_nom = intra_mode_to_tx_type_context[mbmi->mode]; |
| mbmi->tx_type = vpx_read_tree( |
| r, vp10_ext_tx_tree, |
| cm->fc->intra_ext_tx_prob[mbmi->tx_size][tx_type_nom]); |
| if (counts) |
| ++counts->intra_ext_tx[mbmi->tx_size][tx_type_nom][mbmi->tx_type]; |
| } |
| } else { |
| mbmi->tx_type = DCT_DCT; |
| } |
| } |
| |
| void vp10_read_mode_info(VP10Decoder *const pbi, MACROBLOCKD *xd, |
| int mi_row, int mi_col, vpx_reader *r, |
| int x_mis, int y_mis) { |
| VP10_COMMON *const cm = &pbi->common; |
| MODE_INFO *const mi = xd->mi[0]; |
| MV_REF* frame_mvs = cm->cur_frame->mvs + mi_row * cm->mi_cols + mi_col; |
| int w, h; |
| |
| if (frame_is_intra_only(cm)) { |
| read_intra_frame_mode_info(cm, xd, mi_row, mi_col, r); |
| } else { |
| read_inter_frame_mode_info(pbi, xd, mi_row, mi_col, r); |
| |
| for (h = 0; h < y_mis; ++h) { |
| MV_REF *const frame_mv = frame_mvs + h * cm->mi_cols; |
| for (w = 0; w < x_mis; ++w) { |
| MV_REF *const mv = frame_mv + w; |
| mv->ref_frame[0] = mi->mbmi.ref_frame[0]; |
| mv->ref_frame[1] = mi->mbmi.ref_frame[1]; |
| mv->mv[0].as_int = mi->mbmi.mv[0].as_int; |
| mv->mv[1].as_int = mi->mbmi.mv[1].as_int; |
| } |
| } |
| } |
| } |
