diff options
Diffstat (limited to 'media/libvpx/vp9/decoder/vp9_decodemv.c')
| -rw-r--r-- | media/libvpx/vp9/decoder/vp9_decodemv.c | 614 |
1 files changed, 614 insertions, 0 deletions
diff --git a/media/libvpx/vp9/decoder/vp9_decodemv.c b/media/libvpx/vp9/decoder/vp9_decodemv.c new file mode 100644 index 000000000..7ce3389e8 --- /dev/null +++ b/media/libvpx/vp9/decoder/vp9_decodemv.c @@ -0,0 +1,614 @@ +/* + 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_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_decodeframe.h" +#include "vp9/decoder/vp9_reader.h" + +static PREDICTION_MODE read_intra_mode(vp9_reader *r, const vp9_prob *p) { + return (PREDICTION_MODE)vp9_read_tree(r, vp9_intra_mode_tree, p); +} + +static PREDICTION_MODE read_intra_mode_y(VP9_COMMON *cm, MACROBLOCKD *xd, + vp9_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(VP9_COMMON *cm, MACROBLOCKD *xd, + vp9_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(VP9_COMMON *cm, MACROBLOCKD *xd, + vp9_reader *r, int ctx) { + const int mode = vp9_read_tree(r, vp9_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(vp9_reader *r, const struct segmentation *seg) { + return vp9_read_tree(r, vp9_segment_tree, seg->tree_probs); +} + +static TX_SIZE read_selected_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd, + TX_SIZE max_tx_size, vp9_reader *r) { + FRAME_COUNTS *counts = xd->counts; + const int ctx = vp9_get_tx_size_context(xd); + const vp9_prob *tx_probs = get_tx_probs(max_tx_size, ctx, &cm->fc->tx_probs); + int tx_size = vp9_read(r, tx_probs[0]); + if (tx_size != TX_4X4 && max_tx_size >= TX_16X16) { + tx_size += vp9_read(r, tx_probs[1]); + if (tx_size != TX_8X8 && max_tx_size >= TX_32X32) + tx_size += vp9_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(VP9_COMMON *cm, MACROBLOCKD *xd, + int allow_select, vp9_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 (allow_select && tx_mode == TX_MODE_SELECT && bsize >= BLOCK_8X8) + return read_selected_tx_size(cm, xd, max_tx_size, r); + else + return MIN(max_tx_size, tx_mode_to_biggest_tx_size[tx_mode]); +} + +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 = num_8x8_blocks_wide_lookup[bsize]; + const int bh = num_8x8_blocks_high_lookup[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->current_frame_seg_map[mi_offset + y * cm->mi_cols + x] = segment_id; +} + +static void copy_segment_id(const VP9_COMMON *cm, + const uint8_t *last_segment_ids, + uint8_t *current_segment_ids, + BLOCK_SIZE bsize, int mi_row, int mi_col) { + const int mi_offset = mi_row * cm->mi_cols + mi_col; + const int bw = num_8x8_blocks_wide_lookup[bsize]; + const int bh = num_8x8_blocks_high_lookup[bsize]; + const int xmis = MIN(cm->mi_cols - mi_col, bw); + const int ymis = MIN(cm->mi_rows - mi_row, bh); + int x, y; + + for (y = 0; y < ymis; y++) + for (x = 0; x < xmis; 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_intra_segment_id(VP9_COMMON *const cm, BLOCK_SIZE bsize, + int mi_row, int mi_col, + vp9_reader *r) { + struct segmentation *const seg = &cm->seg; + int segment_id; + + if (!seg->enabled) + return 0; // Default for disabled segmentation + + if (!seg->update_map) { + copy_segment_id(cm, cm->last_frame_seg_map, cm->current_frame_seg_map, + bsize, mi_row, mi_col); + return 0; + } + + segment_id = read_segment_id(r, seg); + set_segment_id(cm, bsize, mi_row, mi_col, segment_id); + return segment_id; +} + +static int read_inter_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd, + int mi_row, int mi_col, vp9_reader *r) { + struct segmentation *const seg = &cm->seg; + MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi; + const BLOCK_SIZE bsize = mbmi->sb_type; + int predicted_segment_id, segment_id; + + if (!seg->enabled) + return 0; // Default for disabled segmentation + + predicted_segment_id = cm->last_frame_seg_map ? + vp9_get_segment_id(cm, cm->last_frame_seg_map, bsize, mi_row, mi_col) : 0; + + if (!seg->update_map) { + copy_segment_id(cm, cm->last_frame_seg_map, cm->current_frame_seg_map, + bsize, mi_row, mi_col); + return predicted_segment_id; + } + + if (seg->temporal_update) { + const vp9_prob pred_prob = vp9_get_pred_prob_seg_id(seg, xd); + mbmi->seg_id_predicted = vp9_read(r, pred_prob); + segment_id = mbmi->seg_id_predicted ? predicted_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 int read_skip(VP9_COMMON *cm, const MACROBLOCKD *xd, + int segment_id, vp9_reader *r) { + if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { + return 1; + } else { + const int ctx = vp9_get_skip_context(xd); + const int skip = vp9_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(VP9_COMMON *const cm, + MACROBLOCKD *const xd, + int mi_row, int mi_col, vp9_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; + + mbmi->segment_id = read_intra_segment_id(cm, bsize, mi_row, mi_col, 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(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(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(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(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(mi, above_mi, left_mi, 2)); + break; + default: + mbmi->mode = read_intra_mode(r, + get_y_mode_probs(mi, above_mi, left_mi, 0)); + } + + 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 = vp9_read_tree(r, vp9_mv_class_tree, mvcomp->classes); + const int class0 = mv_class == MV_CLASS_0; + + // Integer part + if (class0) { + d = vp9_read_tree(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 = vp9_read_tree(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 joint_type = + (MV_JOINT_TYPE)vp9_read_tree(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(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); + + vp9_inc_mv(&diff, counts); + + mv->row = ref->row + diff.row; + mv->col = ref->col + diff.col; +} + +static REFERENCE_MODE read_block_reference_mode(VP9_COMMON *cm, + const MACROBLOCKD *xd, + vp9_reader *r) { + if (cm->reference_mode == REFERENCE_MODE_SELECT) { + const int ctx = vp9_get_reference_mode_context(cm, xd); + const REFERENCE_MODE mode = + (REFERENCE_MODE)vp9_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(VP9_COMMON *const cm, MACROBLOCKD *const xd, + vp9_reader *r, + int segment_id, MV_REFERENCE_FRAME ref_frame[2]) { + FRAME_CONTEXT *const fc = cm->fc; + FRAME_COUNTS *counts = xd->counts; + + if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { + ref_frame[0] = (MV_REFERENCE_FRAME)vp9_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 = vp9_get_pred_context_comp_ref_p(cm, xd); + const int bit = vp9_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 = vp9_get_pred_context_single_ref_p1(xd); + const int bit0 = vp9_read(r, fc->single_ref_prob[ctx0][0]); + if (counts) + ++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]); + 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( + VP9_COMMON *const cm, MACROBLOCKD *const xd, + vp9_reader *r) { + const int ctx = vp9_get_pred_context_switchable_interp(xd); + const INTERP_FILTER type = + (INTERP_FILTER)vp9_read_tree(r, vp9_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(VP9_COMMON *const cm, + MACROBLOCKD *const xd, MODE_INFO *mi, + vp9_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(VP9_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, vp9_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(VP9_COMMON *const cm, MACROBLOCKD *const xd, + int segment_id, vp9_reader *r) { + 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_intra_inter_context(xd); + const int is_inter = vp9_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) { + VP9Decoder *const pbi = (VP9Decoder *)data; + vp9_frameworker_wait(pbi->frame_worker_owner, pbi->common.prev_frame, + mi_row << MI_BLOCK_SIZE_LOG2); +} + +static void read_inter_block_mode_info(VP9Decoder *const pbi, + MACROBLOCKD *const xd, + const TileInfo *const tile, + MODE_INFO *const mi, + int mi_row, int mi_col, vp9_reader *r) { + VP9_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 inter_mode_ctx, ref, is_compound; + + 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 ((!vp9_is_valid_scale(&ref_buf->sf))) + vpx_internal_error(xd->error_info, VPX_CODEC_UNSUP_BITSTREAM, + "Reference frame has invalid dimensions"); + vp9_setup_pre_planes(xd, ref, ref_buf->buf, mi_row, mi_col, + &ref_buf->sf); + vp9_find_mv_refs(cm, xd, tile, mi, frame, mbmi->ref_mvs[frame], + mi_row, mi_col, fpm_sync, (void *)pbi); + } + + inter_mode_ctx = mbmi->mode_context[mbmi->ref_frame[0]]; + + if (vp9_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); + } + + if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) { + for (ref = 0; ref < 1 + is_compound; ++ref) { + vp9_find_best_ref_mvs(xd, allow_hp, mbmi->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 = 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; + 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); + + if (b_mode == NEARESTMV || b_mode == NEARMV) + for (ref = 0; ref < 1 + is_compound; ++ref) + vp9_append_sub8x8_mvs_for_idx(cm, xd, tile, j, ref, mi_row, mi_col, + &nearest_sub8x8[ref], + &near_sub8x8[ref]); + + 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(VP9Decoder *const pbi, + MACROBLOCKD *const xd, + const TileInfo *const tile, + int mi_row, int mi_col, vp9_reader *r) { + VP9_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, tile, mi, mi_row, mi_col, r); + else + read_intra_block_mode_info(cm, xd, mi, r); +} + +void vp9_read_mode_info(VP9Decoder *const pbi, MACROBLOCKD *xd, + const TileInfo *const tile, + int mi_row, int mi_col, vp9_reader *r) { + VP9_COMMON *const cm = &pbi->common; + MODE_INFO *const mi = xd->mi[0]; + const int bw = num_8x8_blocks_wide_lookup[mi->mbmi.sb_type]; + const int bh = num_8x8_blocks_high_lookup[mi->mbmi.sb_type]; + const int x_mis = MIN(bw, cm->mi_cols - mi_col); + const int y_mis = MIN(bh, cm->mi_rows - mi_row); + 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, tile, 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; + } + } +} |