| /* |
| 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 "vp9/decoder/vp9_treereader.h" |
| #include "vp9/common/vp9_entropymv.h" |
| #include "vp9/common/vp9_entropymode.h" |
| #include "vp9/common/vp9_reconinter.h" |
| #include "vp9/decoder/vp9_onyxd_int.h" |
| #include "vp9/common/vp9_findnearmv.h" |
| #include "vp9/common/vp9_common.h" |
| #include "vp9/common/vp9_seg_common.h" |
| #include "vp9/common/vp9_pred_common.h" |
| #include "vp9/common/vp9_entropy.h" |
| #include "vp9/decoder/vp9_decodemv.h" |
| #include "vp9/decoder/vp9_decodframe.h" |
| #include "vp9/common/vp9_mvref_common.h" |
| #if CONFIG_DEBUG |
| #include <assert.h> |
| #endif |
| |
| // #define DEBUG_DEC_MV |
| #ifdef DEBUG_DEC_MV |
| int dec_mvcount = 0; |
| #endif |
| |
| // #define DEC_DEBUG |
| #ifdef DEC_DEBUG |
| extern int dec_debug; |
| #endif |
| |
| static MB_PREDICTION_MODE read_intra_mode(vp9_reader *r, const vp9_prob *p) { |
| MB_PREDICTION_MODE m = treed_read(r, vp9_intra_mode_tree, p); |
| return m; |
| } |
| |
| static int read_mb_segid(vp9_reader *r, MACROBLOCKD *xd) { |
| return treed_read(r, vp9_segment_tree, xd->mb_segment_tree_probs); |
| } |
| |
| static void set_segment_id(VP9_COMMON *cm, MB_MODE_INFO *mbmi, |
| int mi_row, int mi_col, int segment_id) { |
| const int mi_index = mi_row * cm->mi_cols + mi_col; |
| const BLOCK_SIZE_TYPE sb_type = mbmi->sb_type; |
| const int bw = 1 << mi_width_log2(sb_type); |
| const int bh = 1 << mi_height_log2(sb_type); |
| const int ymis = MIN(cm->mi_rows - mi_row, bh); |
| const int xmis = MIN(cm->mi_cols - mi_col, bw); |
| int x, y; |
| |
| for (y = 0; y < ymis; y++) { |
| for (x = 0; x < xmis; x++) { |
| const int index = mi_index + (y * cm->mi_cols + x); |
| cm->last_frame_seg_map[index] = segment_id; |
| } |
| } |
| } |
| |
| static TX_SIZE select_txfm_size(VP9_COMMON *cm, vp9_reader *r, |
| BLOCK_SIZE_TYPE bsize) { |
| int tx_probs_offset = get_tx_probs_offset(bsize); |
| TX_SIZE txfm_size = vp9_read(r, cm->fc.tx_probs[tx_probs_offset]); |
| if (txfm_size != TX_4X4 && bsize >= BLOCK_SIZE_MB16X16) { |
| txfm_size += vp9_read(r, cm->fc.tx_probs[tx_probs_offset + 1]); |
| if (txfm_size != TX_8X8 && bsize >= BLOCK_SIZE_SB32X32) |
| txfm_size += vp9_read(r, cm->fc.tx_probs[tx_probs_offset + 2]); |
| } |
| if (bsize >= BLOCK_SIZE_SB32X32) { |
| cm->fc.tx_count_32x32p[txfm_size]++; |
| } else if (bsize >= BLOCK_SIZE_MB16X16) { |
| cm->fc.tx_count_16x16p[txfm_size]++; |
| } else { |
| cm->fc.tx_count_8x8p[txfm_size]++; |
| } |
| return txfm_size; |
| } |
| |
| |
| static void kfread_modes(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; |
| const int mis = cm->mode_info_stride; |
| |
| // Read segmentation map if it is being updated explicitly this frame |
| m->mbmi.segment_id = 0; |
| if (xd->segmentation_enabled && xd->update_mb_segmentation_map) { |
| m->mbmi.segment_id = read_mb_segid(r, xd); |
| set_segment_id(cm, &m->mbmi, mi_row, mi_col, m->mbmi.segment_id); |
| } |
| |
| m->mbmi.mb_skip_coeff = vp9_segfeature_active(xd, m->mbmi.segment_id, |
| SEG_LVL_SKIP); |
| if (!m->mbmi.mb_skip_coeff) |
| m->mbmi.mb_skip_coeff = vp9_read(r, vp9_get_pred_prob(cm, xd, PRED_MBSKIP)); |
| |
| if (cm->txfm_mode == TX_MODE_SELECT && |
| m->mbmi.sb_type >= BLOCK_SIZE_SB8X8) { |
| m->mbmi.txfm_size = select_txfm_size(cm, r, m->mbmi.sb_type); |
| } else if (cm->txfm_mode >= ALLOW_32X32 && |
| m->mbmi.sb_type >= BLOCK_SIZE_SB32X32) { |
| m->mbmi.txfm_size = TX_32X32; |
| } else if (cm->txfm_mode >= ALLOW_16X16 && |
| m->mbmi.sb_type >= BLOCK_SIZE_MB16X16) { |
| m->mbmi.txfm_size = TX_16X16; |
| } else if (cm->txfm_mode >= ALLOW_8X8 && |
| m->mbmi.sb_type >= BLOCK_SIZE_SB8X8) { |
| m->mbmi.txfm_size = TX_8X8; |
| } else { |
| m->mbmi.txfm_size = TX_4X4; |
| } |
| |
| // luma mode |
| m->mbmi.ref_frame[0] = INTRA_FRAME; |
| if (m->mbmi.sb_type >= BLOCK_SIZE_SB8X8) { |
| const MB_PREDICTION_MODE A = above_block_mode(m, 0, mis); |
| const MB_PREDICTION_MODE L = xd->left_available ? |
| left_block_mode(m, 0) : DC_PRED; |
| m->mbmi.mode = read_intra_mode(r, cm->kf_y_mode_prob[A][L]); |
| } else { |
| int idx, idy; |
| int bw = 1 << b_width_log2(m->mbmi.sb_type); |
| int bh = 1 << b_height_log2(m->mbmi.sb_type); |
| |
| for (idy = 0; idy < 2; idy += bh) { |
| for (idx = 0; idx < 2; idx += bw) { |
| int ib = idy * 2 + idx; |
| int k; |
| const MB_PREDICTION_MODE A = above_block_mode(m, ib, mis); |
| const MB_PREDICTION_MODE L = (xd->left_available || idx) ? |
| left_block_mode(m, ib) : DC_PRED; |
| m->bmi[ib].as_mode.first = |
| read_intra_mode(r, cm->kf_y_mode_prob[A][L]); |
| for (k = 1; k < bh; ++k) |
| m->bmi[ib + k * 2].as_mode.first = m->bmi[ib].as_mode.first; |
| for (k = 1; k < bw; ++k) |
| m->bmi[ib + k].as_mode.first = m->bmi[ib].as_mode.first; |
| } |
| } |
| m->mbmi.mode = m->bmi[3].as_mode.first; |
| } |
| |
| m->mbmi.uv_mode = read_intra_mode(r, cm->kf_uv_mode_prob[m->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); |
| |
| // Integer part |
| if (mv_class == MV_CLASS_0) { |
| 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, |
| mv_class == MV_CLASS_0 ? 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, |
| mv_class == MV_CLASS_0 ? 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 void update_nmv(vp9_reader *r, vp9_prob *const p, |
| const vp9_prob upd_p) { |
| if (vp9_read(r, upd_p)) { |
| #ifdef LOW_PRECISION_MV_UPDATE |
| *p = (vp9_read_literal(r, 7) << 1) | 1; |
| #else |
| *p = (vp9_read_literal(r, 8)); |
| #endif |
| } |
| } |
| |
| static void read_nmvprobs(vp9_reader *r, nmv_context *mvctx, |
| int usehp) { |
| int i, j, k; |
| |
| #ifdef MV_GROUP_UPDATE |
| if (!vp9_read_bit(r)) |
| return; |
| #endif |
| for (j = 0; j < MV_JOINTS - 1; ++j) |
| update_nmv(r, &mvctx->joints[j], VP9_NMV_UPDATE_PROB); |
| |
| for (i = 0; i < 2; ++i) { |
| update_nmv(r, &mvctx->comps[i].sign, VP9_NMV_UPDATE_PROB); |
| for (j = 0; j < MV_CLASSES - 1; ++j) |
| update_nmv(r, &mvctx->comps[i].classes[j], VP9_NMV_UPDATE_PROB); |
| |
| for (j = 0; j < CLASS0_SIZE - 1; ++j) |
| update_nmv(r, &mvctx->comps[i].class0[j], VP9_NMV_UPDATE_PROB); |
| |
| for (j = 0; j < MV_OFFSET_BITS; ++j) |
| update_nmv(r, &mvctx->comps[i].bits[j], VP9_NMV_UPDATE_PROB); |
| } |
| |
| for (i = 0; i < 2; ++i) { |
| for (j = 0; j < CLASS0_SIZE; ++j) |
| for (k = 0; k < 3; ++k) |
| update_nmv(r, &mvctx->comps[i].class0_fp[j][k], VP9_NMV_UPDATE_PROB); |
| |
| for (j = 0; j < 3; ++j) |
| update_nmv(r, &mvctx->comps[i].fp[j], VP9_NMV_UPDATE_PROB); |
| } |
| |
| if (usehp) { |
| for (i = 0; i < 2; ++i) { |
| update_nmv(r, &mvctx->comps[i].class0_hp, VP9_NMV_UPDATE_PROB); |
| update_nmv(r, &mvctx->comps[i].hp, VP9_NMV_UPDATE_PROB); |
| } |
| } |
| } |
| |
| // Read the referncence frame |
| static void read_ref_frame(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; |
| const int seg_ref_active = vp9_segfeature_active(xd, segment_id, |
| SEG_LVL_REF_FRAME); |
| |
| // Segment reference frame features not available. |
| if (!seg_ref_active) { |
| int is_comp; |
| int comp_ctx = vp9_get_pred_context(cm, xd, PRED_COMP_INTER_INTER); |
| |
| if (cm->comp_pred_mode == HYBRID_PREDICTION) { |
| is_comp = vp9_read(r, cm->fc.comp_inter_prob[comp_ctx]); |
| cm->fc.comp_inter_count[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) { |
| int b, fix_ref_idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref]; |
| int ref_ctx = vp9_get_pred_context(cm, xd, PRED_COMP_REF_P); |
| |
| ref_frame[fix_ref_idx] = cm->comp_fixed_ref; |
| b = vp9_read(r, cm->fc.comp_ref_prob[ref_ctx]); |
| cm->fc.comp_ref_count[ref_ctx][b]++; |
| ref_frame[!fix_ref_idx] = cm->comp_var_ref[b]; |
| } else { |
| int ref1_ctx = vp9_get_pred_context(cm, xd, PRED_SINGLE_REF_P1); |
| ref_frame[1] = NONE; |
| if (vp9_read(r, cm->fc.single_ref_prob[ref1_ctx][0])) { |
| int ref2_ctx = vp9_get_pred_context(cm, xd, PRED_SINGLE_REF_P2); |
| int b2 = vp9_read(r, cm->fc.single_ref_prob[ref2_ctx][1]); |
| ref_frame[0] = b2 ? ALTREF_FRAME : GOLDEN_FRAME; |
| cm->fc.single_ref_count[ref1_ctx][0][1]++; |
| cm->fc.single_ref_count[ref2_ctx][1][b2]++; |
| } else { |
| ref_frame[0] = LAST_FRAME; |
| cm->fc.single_ref_count[ref1_ctx][0][0]++; |
| } |
| } |
| } else { |
| ref_frame[0] = vp9_get_segdata(xd, segment_id, SEG_LVL_REF_FRAME); |
| ref_frame[1] = NONE; |
| } |
| } |
| |
| static MB_PREDICTION_MODE read_sb_mv_ref(vp9_reader *r, const vp9_prob *p) { |
| return (MB_PREDICTION_MODE) treed_read(r, vp9_sb_mv_ref_tree, p); |
| } |
| |
| #ifdef VPX_MODE_COUNT |
| unsigned int vp9_mv_cont_count[5][4] = { |
| { 0, 0, 0, 0 }, |
| { 0, 0, 0, 0 }, |
| { 0, 0, 0, 0 }, |
| { 0, 0, 0, 0 }, |
| { 0, 0, 0, 0 } |
| }; |
| #endif |
| |
| static void read_switchable_interp_probs(VP9_COMMON* const cm, vp9_reader *r) { |
| int i, j; |
| for (j = 0; j <= VP9_SWITCHABLE_FILTERS; ++j) |
| for (i = 0; i < VP9_SWITCHABLE_FILTERS - 1; ++i) { |
| if (vp9_read(r, VP9_DEF_UPDATE_PROB)) { |
| cm->fc.switchable_interp_prob[j][i] = |
| // vp9_read_prob(r); |
| vp9_read_prob_diff_update(r, cm->fc.switchable_interp_prob[j][i]); |
| } |
| } |
| } |
| |
| static void read_inter_mode_probs(VP9_COMMON *const cm, vp9_reader *r) { |
| int i, j; |
| for (i = 0; i < INTER_MODE_CONTEXTS; ++i) |
| for (j = 0; j < VP9_INTER_MODES - 1; ++j) { |
| if (vp9_read(r, VP9_DEF_UPDATE_PROB)) { |
| // cm->fc.inter_mode_probs[i][j] = vp9_read_prob(r); |
| cm->fc.inter_mode_probs[i][j] = |
| vp9_read_prob_diff_update(r, cm->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 void mb_mode_mv_init(VP9D_COMP *pbi, vp9_reader *r) { |
| VP9_COMMON *const cm = &pbi->common; |
| |
| if (cm->frame_type != KEY_FRAME) { |
| nmv_context *const nmvc = &pbi->common.fc.nmvc; |
| MACROBLOCKD *const xd = &pbi->mb; |
| int i, j; |
| |
| read_inter_mode_probs(cm, r); |
| |
| if (cm->mcomp_filter_type == SWITCHABLE) |
| read_switchable_interp_probs(cm, r); |
| |
| for (i = 0; i < INTRA_INTER_CONTEXTS; i++) { |
| if (vp9_read(r, VP9_DEF_UPDATE_PROB)) |
| cm->fc.intra_inter_prob[i] = |
| vp9_read_prob_diff_update(r, cm->fc.intra_inter_prob[i]); |
| } |
| |
| if (cm->allow_comp_inter_inter) { |
| cm->comp_pred_mode = read_comp_pred_mode(r); |
| if (cm->comp_pred_mode == HYBRID_PREDICTION) |
| for (i = 0; i < COMP_INTER_CONTEXTS; i++) |
| if (vp9_read(r, VP9_DEF_UPDATE_PROB)) |
| cm->fc.comp_inter_prob[i] = |
| vp9_read_prob_diff_update(r, cm->fc.comp_inter_prob[i]); |
| } else { |
| cm->comp_pred_mode = SINGLE_PREDICTION_ONLY; |
| } |
| |
| if (cm->comp_pred_mode != COMP_PREDICTION_ONLY) |
| for (i = 0; i < REF_CONTEXTS; i++) { |
| if (vp9_read(r, VP9_DEF_UPDATE_PROB)) |
| cm->fc.single_ref_prob[i][0] = |
| vp9_read_prob_diff_update(r, cm->fc.single_ref_prob[i][0]); |
| if (vp9_read(r, VP9_DEF_UPDATE_PROB)) |
| cm->fc.single_ref_prob[i][1] = |
| vp9_read_prob_diff_update(r, cm->fc.single_ref_prob[i][1]); |
| } |
| |
| if (cm->comp_pred_mode != SINGLE_PREDICTION_ONLY) |
| for (i = 0; i < REF_CONTEXTS; i++) |
| if (vp9_read(r, VP9_DEF_UPDATE_PROB)) |
| cm->fc.comp_ref_prob[i] = |
| vp9_read_prob_diff_update(r, cm->fc.comp_ref_prob[i]); |
| |
| // VP9_INTRA_MODES |
| for (j = 0; j < BLOCK_SIZE_GROUPS; j++) { |
| for (i = 0; i < VP9_INTRA_MODES - 1; ++i) { |
| if (vp9_read(r, VP9_DEF_UPDATE_PROB)) { |
| cm->fc.y_mode_prob[j][i] = |
| vp9_read_prob_diff_update(r, cm->fc.y_mode_prob[j][i]); |
| } |
| } |
| } |
| for (j = 0; j < NUM_PARTITION_CONTEXTS; ++j) { |
| for (i = 0; i < PARTITION_TYPES - 1; ++i) { |
| if (vp9_read(r, VP9_DEF_UPDATE_PROB)) { |
| cm->fc.partition_prob[INTER_FRAME][j][i] = |
| vp9_read_prob_diff_update(r, |
| cm->fc.partition_prob[INTER_FRAME][j][i]); |
| } |
| } |
| } |
| |
| read_nmvprobs(r, nmvc, xd->allow_high_precision_mv); |
| } |
| } |
| |
| // This function either reads the segment id for the current macroblock from |
| // the bitstream or if the value is temporally predicted asserts the predicted |
| // value |
| static int read_mb_segment_id(VP9D_COMP *pbi, int mi_row, int mi_col, |
| vp9_reader *r) { |
| VP9_COMMON *const cm = &pbi->common; |
| MACROBLOCKD *const xd = &pbi->mb; |
| MODE_INFO *const mi = xd->mode_info_context; |
| MB_MODE_INFO *const mbmi = &mi->mbmi; |
| |
| if (!xd->segmentation_enabled) |
| return 0; // Default for disabled segmentation |
| |
| if (xd->update_mb_segmentation_map) { |
| int segment_id; |
| |
| if (cm->temporal_update) { |
| // Temporal coding of the segment id for this mb is enabled. |
| // Get the context based probability for reading the |
| // prediction status flag |
| const vp9_prob pred_prob = vp9_get_pred_prob(cm, xd, PRED_SEG_ID); |
| const int pred_flag = vp9_read(r, pred_prob); |
| vp9_set_pred_flag(xd, PRED_SEG_ID, pred_flag); |
| |
| // If the value is flagged as correctly predicted |
| // then use the predicted value, otherwise decode it explicitly |
| segment_id = pred_flag ? vp9_get_pred_mi_segid(cm, mbmi->sb_type, |
| mi_row, mi_col) |
| : read_mb_segid(r, xd); |
| } else { |
| segment_id = read_mb_segid(r, xd); // Normal unpredicted coding mode |
| } |
| |
| set_segment_id(cm, mbmi, mi_row, mi_col, segment_id); // Side effect |
| return segment_id; |
| } else { |
| return vp9_get_pred_mi_segid(cm, mbmi->sb_type, mi_row, mi_col); |
| } |
| } |
| |
| |
| static INLINE void assign_and_clamp_mv(int_mv *dst, const int_mv *src, |
| int mb_to_left_edge, |
| int mb_to_right_edge, |
| int mb_to_top_edge, |
| int mb_to_bottom_edge) { |
| dst->as_int = src->as_int; |
| clamp_mv(dst, mb_to_left_edge, mb_to_right_edge, mb_to_top_edge, |
| mb_to_bottom_edge); |
| } |
| |
| static INLINE void decode_mv(vp9_reader *r, MV *mv, const MV *ref, |
| const nmv_context *ctx, |
| nmv_context_counts *counts, |
| int usehp) { |
| const MV_JOINT_TYPE j = treed_read(r, vp9_mv_joint_tree, ctx->joints); |
| MV diff = {0, 0}; |
| |
| usehp = usehp && vp9_use_nmv_hp(ref); |
| if (mv_joint_vertical(j)) |
| diff.row = read_mv_component(r, &ctx->comps[0], usehp); |
| |
| if (mv_joint_horizontal(j)) |
| diff.col = read_mv_component(r, &ctx->comps[1], usehp); |
| |
| vp9_increment_nmv(&diff, ref, counts, usehp); |
| |
| mv->row = diff.row + ref->row; |
| mv->col = diff.col + ref->col; |
| } |
| |
| static INLINE INTERPOLATIONFILTERTYPE read_switchable_filter_type( |
| VP9D_COMP *pbi, vp9_reader *r) { |
| const int index = treed_read(r, vp9_switchable_interp_tree, |
| vp9_get_pred_probs(&pbi->common, &pbi->mb, |
| PRED_SWITCHABLE_INTERP)); |
| ++pbi->common.fc.switchable_interp_count |
| [vp9_get_pred_context( |
| &pbi->common, &pbi->mb, PRED_SWITCHABLE_INTERP)][index]; |
| return vp9_switchable_interp[index]; |
| } |
| |
| static void read_mb_modes_mv(VP9D_COMP *pbi, MODE_INFO *mi, MB_MODE_INFO *mbmi, |
| int mi_row, int mi_col, |
| vp9_reader *r) { |
| VP9_COMMON *const cm = &pbi->common; |
| nmv_context *const nmvc = &cm->fc.nmvc; |
| MACROBLOCKD *const xd = &pbi->mb; |
| |
| int_mv *const mv0 = &mbmi->mv[0]; |
| int_mv *const mv1 = &mbmi->mv[1]; |
| BLOCK_SIZE_TYPE bsize = mi->mbmi.sb_type; |
| int bw = 1 << b_width_log2(bsize); |
| int bh = 1 << b_height_log2(bsize); |
| |
| int mb_to_left_edge, mb_to_right_edge, mb_to_top_edge, mb_to_bottom_edge; |
| int j, idx, idy; |
| |
| mbmi->need_to_clamp_mvs = 0; |
| mbmi->need_to_clamp_secondmv = 0; |
| mbmi->ref_frame[1] = NONE; |
| |
| // Make sure the MACROBLOCKD mode info pointer is pointed at the |
| // correct entry for the current macroblock. |
| xd->mode_info_context = mi; |
| |
| // Distance of Mb to the various image edges. |
| // These specified to 8th pel as they are always compared to MV values |
| // that are in 1/8th pel units |
| set_mi_row_col(cm, xd, mi_row, 1 << mi_height_log2(bsize), |
| mi_col, 1 << mi_width_log2(bsize)); |
| |
| mb_to_top_edge = xd->mb_to_top_edge - LEFT_TOP_MARGIN; |
| mb_to_bottom_edge = xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN; |
| mb_to_left_edge = xd->mb_to_left_edge - LEFT_TOP_MARGIN; |
| mb_to_right_edge = xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN; |
| |
| // Read the macroblock segment id. |
| mbmi->segment_id = read_mb_segment_id(pbi, mi_row, mi_col, r); |
| |
| mbmi->mb_skip_coeff = vp9_segfeature_active(xd, mbmi->segment_id, |
| SEG_LVL_SKIP); |
| if (!mbmi->mb_skip_coeff) |
| mbmi->mb_skip_coeff = vp9_read(r, vp9_get_pred_prob(cm, xd, PRED_MBSKIP)); |
| |
| // Read the reference frame |
| if (!vp9_segfeature_active(xd, mbmi->segment_id, SEG_LVL_REF_FRAME)) { |
| mbmi->ref_frame[0] = |
| vp9_read(r, vp9_get_pred_prob(cm, xd, PRED_INTRA_INTER)); |
| cm->fc.intra_inter_count[vp9_get_pred_context(cm, xd, PRED_INTRA_INTER)] |
| [mbmi->ref_frame[0] != INTRA_FRAME]++; |
| } else { |
| mbmi->ref_frame[0] = |
| vp9_get_segdata(xd, mbmi->segment_id, SEG_LVL_REF_FRAME) != INTRA_FRAME; |
| } |
| |
| if (cm->txfm_mode == TX_MODE_SELECT && |
| (mbmi->mb_skip_coeff == 0 || mbmi->ref_frame[0] == INTRA_FRAME) && |
| bsize >= BLOCK_SIZE_SB8X8) { |
| mbmi->txfm_size = select_txfm_size(cm, r, bsize); |
| } else if (bsize >= BLOCK_SIZE_SB32X32 && |
| cm->txfm_mode >= ALLOW_32X32) { |
| mbmi->txfm_size = TX_32X32; |
| } else if (cm->txfm_mode >= ALLOW_16X16 && |
| bsize >= BLOCK_SIZE_MB16X16) { |
| mbmi->txfm_size = TX_16X16; |
| } else if (cm->txfm_mode >= ALLOW_8X8 && (bsize >= BLOCK_SIZE_SB8X8)) { |
| mbmi->txfm_size = TX_8X8; |
| } else { |
| mbmi->txfm_size = TX_4X4; |
| } |
| |
| // If reference frame is an Inter frame |
| if (mbmi->ref_frame[0] != INTRA_FRAME) { |
| int_mv nearest, nearby, best_mv; |
| int_mv nearest_second, nearby_second, best_mv_second; |
| vp9_prob mv_ref_p[VP9_INTER_MODES - 1]; |
| |
| read_ref_frame(pbi, r, mbmi->segment_id, mbmi->ref_frame); |
| |
| { |
| #ifdef DEC_DEBUG |
| if (dec_debug) |
| printf("%d %d\n", xd->mode_info_context->mbmi.mv[0].as_mv.row, |
| xd->mode_info_context->mbmi.mv[0].as_mv.col); |
| #endif |
| vp9_find_mv_refs(cm, xd, mi, xd->prev_mode_info_context, |
| mbmi->ref_frame[0], mbmi->ref_mvs[mbmi->ref_frame[0]], |
| cm->ref_frame_sign_bias); |
| |
| vp9_mv_ref_probs(cm, mv_ref_p, mbmi->mb_mode_context[mbmi->ref_frame[0]]); |
| |
| // If the segment level skip mode enabled |
| if (vp9_segfeature_active(xd, mbmi->segment_id, SEG_LVL_SKIP)) { |
| mbmi->mode = ZEROMV; |
| } else if (bsize >= BLOCK_SIZE_SB8X8) { |
| mbmi->mode = read_sb_mv_ref(r, mv_ref_p); |
| vp9_accum_mv_refs(cm, mbmi->mode, |
| mbmi->mb_mode_context[mbmi->ref_frame[0]]); |
| } |
| |
| if (bsize < BLOCK_SIZE_SB8X8 || mbmi->mode != ZEROMV) { |
| vp9_find_best_ref_mvs(xd, |
| mbmi->ref_mvs[mbmi->ref_frame[0]], |
| &nearest, &nearby); |
| |
| best_mv.as_int = mbmi->ref_mvs[mbmi->ref_frame[0]][0].as_int; |
| } |
| |
| #ifdef DEC_DEBUG |
| if (dec_debug) |
| printf("[D %d %d] %d %d %d %d\n", ref_frame, |
| mbmi->mb_mode_context[ref_frame], |
| mv_ref_p[0], mv_ref_p[1], mv_ref_p[2], mv_ref_p[3]); |
| #endif |
| } |
| |
| mbmi->interp_filter = cm->mcomp_filter_type == SWITCHABLE |
| ? read_switchable_filter_type(pbi, r) |
| : cm->mcomp_filter_type; |
| |
| if (mbmi->ref_frame[1] > INTRA_FRAME) { |
| vp9_find_mv_refs(cm, xd, mi, xd->prev_mode_info_context, |
| mbmi->ref_frame[1], |
| mbmi->ref_mvs[mbmi->ref_frame[1]], |
| cm->ref_frame_sign_bias); |
| |
| if (bsize < BLOCK_SIZE_SB8X8 || mbmi->mode != ZEROMV) { |
| vp9_find_best_ref_mvs(xd, |
| mbmi->ref_mvs[mbmi->ref_frame[1]], |
| &nearest_second, |
| &nearby_second); |
| best_mv_second.as_int = mbmi->ref_mvs[mbmi->ref_frame[1]][0].as_int; |
| } |
| } |
| |
| mbmi->uv_mode = DC_PRED; |
| if (mbmi->sb_type < BLOCK_SIZE_SB8X8) { |
| mbmi->need_to_clamp_mvs = 0; |
| for (idy = 0; idy < 2; idy += bh) { |
| for (idx = 0; idx < 2; idx += bw) { |
| int_mv blockmv, secondmv; |
| int blockmode; |
| int i; |
| j = idy * 2 + idx; |
| |
| blockmode = read_sb_mv_ref(r, mv_ref_p); |
| vp9_accum_mv_refs(cm, blockmode, |
| mbmi->mb_mode_context[mbmi->ref_frame[0]]); |
| if (blockmode == NEARESTMV || blockmode == NEARMV) { |
| MV_REFERENCE_FRAME rf2 = mbmi->ref_frame[1]; |
| vp9_append_sub8x8_mvs_for_idx(cm, xd, &nearest, &nearby, j, 0); |
| if (rf2 > 0) { |
| vp9_append_sub8x8_mvs_for_idx(cm, xd, &nearest_second, |
| &nearby_second, j, 1); |
| } |
| } |
| |
| switch (blockmode) { |
| case NEWMV: |
| decode_mv(r, &blockmv.as_mv, &best_mv.as_mv, nmvc, |
| &cm->fc.NMVcount, xd->allow_high_precision_mv); |
| |
| if (mbmi->ref_frame[1] > 0) |
| decode_mv(r, &secondmv.as_mv, &best_mv_second.as_mv, nmvc, |
| &cm->fc.NMVcount, xd->allow_high_precision_mv); |
| |
| #ifdef VPX_MODE_COUNT |
| vp9_mv_cont_count[mv_contz][3]++; |
| #endif |
| break; |
| case NEARESTMV: |
| blockmv.as_int = nearest.as_int; |
| if (mbmi->ref_frame[1] > 0) |
| secondmv.as_int = nearest_second.as_int; |
| #ifdef VPX_MODE_COUNT |
| vp9_mv_cont_count[mv_contz][0]++; |
| #endif |
| break; |
| case NEARMV: |
| blockmv.as_int = nearby.as_int; |
| if (mbmi->ref_frame[1] > 0) |
| secondmv.as_int = nearby_second.as_int; |
| #ifdef VPX_MODE_COUNT |
| vp9_mv_cont_count[mv_contz][1]++; |
| #endif |
| break; |
| case ZEROMV: |
| blockmv.as_int = 0; |
| if (mbmi->ref_frame[1] > 0) |
| secondmv.as_int = 0; |
| #ifdef VPX_MODE_COUNT |
| vp9_mv_cont_count[mv_contz][2]++; |
| #endif |
| break; |
| default: |
| break; |
| } |
| mi->bmi[j].as_mv[0].as_int = blockmv.as_int; |
| if (mbmi->ref_frame[1] > 0) |
| mi->bmi[j].as_mv[1].as_int = secondmv.as_int; |
| |
| for (i = 1; i < bh; ++i) |
| vpx_memcpy(&mi->bmi[j + i * 2], &mi->bmi[j], sizeof(mi->bmi[j])); |
| for (i = 1; i < bw; ++i) |
| vpx_memcpy(&mi->bmi[j + i], &mi->bmi[j], sizeof(mi->bmi[j])); |
| mi->mbmi.mode = blockmode; |
| } |
| } |
| |
| mv0->as_int = mi->bmi[3].as_mv[0].as_int; |
| mv1->as_int = mi->bmi[3].as_mv[1].as_int; |
| } else { |
| switch (mbmi->mode) { |
| case NEARMV: |
| // Clip "next_nearest" so that it does not extend to far out of image |
| assign_and_clamp_mv(mv0, &nearby, mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| if (mbmi->ref_frame[1] > 0) |
| assign_and_clamp_mv(mv1, &nearby_second, mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| break; |
| |
| case NEARESTMV: |
| // Clip "next_nearest" so that it does not extend to far out of image |
| assign_and_clamp_mv(mv0, &nearest, mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| if (mbmi->ref_frame[1] > 0) |
| assign_and_clamp_mv(mv1, &nearest_second, mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| break; |
| |
| case ZEROMV: |
| mv0->as_int = 0; |
| if (mbmi->ref_frame[1] > 0) |
| mv1->as_int = 0; |
| break; |
| |
| case NEWMV: |
| decode_mv(r, &mv0->as_mv, &best_mv.as_mv, nmvc, &cm->fc.NMVcount, |
| xd->allow_high_precision_mv); |
| mbmi->need_to_clamp_mvs = check_mv_bounds(mv0, |
| mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| |
| if (mbmi->ref_frame[1] > 0) { |
| decode_mv(r, &mv1->as_mv, &best_mv_second.as_mv, nmvc, |
| &cm->fc.NMVcount, xd->allow_high_precision_mv); |
| mbmi->need_to_clamp_secondmv = check_mv_bounds(mv1, |
| mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| } |
| break; |
| default: |
| #if CONFIG_DEBUG |
| assert(0); |
| #endif |
| break; |
| } |
| } |
| } else { |
| // required for left and above block mv |
| mv0->as_int = 0; |
| |
| if (bsize >= BLOCK_SIZE_SB8X8) { |
| const BLOCK_SIZE_TYPE bsize = xd->mode_info_context->mbmi.sb_type; |
| const int bwl = b_width_log2(bsize), bhl = b_height_log2(bsize); |
| const int bsl = MIN(bwl, bhl); |
| mbmi->mode = read_intra_mode(r, cm->fc.y_mode_prob[MIN(3, bsl)]); |
| cm->fc.y_mode_counts[MIN(3, bsl)][mbmi->mode]++; |
| } else { |
| int idx, idy; |
| for (idy = 0; idy < 2; idy += bh) { |
| for (idx = 0; idx < 2; idx += bw) { |
| int ib = idy * 2 + idx, k; |
| int m = read_intra_mode(r, cm->fc.y_mode_prob[0]); |
| mi->bmi[ib].as_mode.first = m; |
| cm->fc.y_mode_counts[0][m]++; |
| for (k = 1; k < bh; ++k) |
| mi->bmi[ib + k * 2].as_mode.first = m; |
| for (k = 1; k < bw; ++k) |
| mi->bmi[ib + k].as_mode.first = m; |
| } |
| } |
| mbmi->mode = mi->bmi[3].as_mode.first; |
| } |
| |
| mbmi->uv_mode = read_intra_mode(r, cm->fc.uv_mode_prob[mbmi->mode]); |
| cm->fc.uv_mode_counts[mbmi->mode][mbmi->uv_mode]++; |
| } |
| } |
| |
| void vp9_decode_mode_mvs_init(VP9D_COMP* const pbi, vp9_reader *r) { |
| VP9_COMMON *cm = &pbi->common; |
| int k; |
| |
| // TODO(jkoleszar): does this clear more than MBSKIP_CONTEXTS? Maybe remove. |
| vpx_memset(cm->mbskip_pred_probs, 0, sizeof(cm->mbskip_pred_probs)); |
| for (k = 0; k < MBSKIP_CONTEXTS; ++k) |
| cm->mbskip_pred_probs[k] = vp9_read_prob(r); |
| |
| mb_mode_mv_init(pbi, r); |
| } |
| |
| void vp9_decode_mb_mode_mv(VP9D_COMP* const pbi, |
| MACROBLOCKD* const xd, |
| int mi_row, |
| int mi_col, |
| vp9_reader *r) { |
| VP9_COMMON *const cm = &pbi->common; |
| MODE_INFO *mi = xd->mode_info_context; |
| MB_MODE_INFO *const mbmi = &mi->mbmi; |
| |
| if (cm->frame_type == KEY_FRAME) { |
| kfread_modes(pbi, mi, mi_row, mi_col, r); |
| } else { |
| read_mb_modes_mv(pbi, mi, &mi->mbmi, mi_row, mi_col, r); |
| } |
| |
| if (1) { |
| const int bw = 1 << mi_width_log2(mbmi->sb_type); |
| const int bh = 1 << mi_height_log2(mbmi->sb_type); |
| const int y_mis = MIN(bh, cm->mi_rows - mi_row); |
| const int x_mis = MIN(bw, cm->mi_cols - mi_col); |
| const int mis = cm->mode_info_stride; |
| int x, y; |
| |
| for (y = 0; y < y_mis; y++) |
| for (x = !y; x < x_mis; x++) |
| mi[y * mis + x] = *mi; |
| } |
| } |
