diff options
Diffstat (limited to 'vp10/decoder/decodemv.c')
| -rw-r--r-- | vp10/decoder/decodemv.c | 720 |
1 files changed, 0 insertions, 720 deletions
diff --git a/vp10/decoder/decodemv.c b/vp10/decoder/decodemv.c deleted file mode 100644 index 38ea0736a..000000000 --- a/vp10/decoder/decodemv.c +++ /dev/null @@ -1,720 +0,0 @@ -/* - 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 INLINE int read_uniform(vpx_reader *r, int n) { - int l = get_unsigned_bits(n); - int m = (1 << l) - n; - int v = vpx_read_literal(r, l-1); - - assert(l != 0); - - if (v < m) - return v; - else - return (v << 1) - m + vpx_read_literal(r, 1); -} - -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 (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_palette_mode_info(VP10_COMMON *const cm, - MACROBLOCKD *const xd, - 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, palette_ctx = 0; - - if (above_mi) - palette_ctx += (above_mi->mbmi.palette_mode_info.palette_size[0] > 0); - if (left_mi) - palette_ctx += (left_mi->mbmi.palette_mode_info.palette_size[0] > 0); - if (vpx_read(r, vp10_default_palette_y_mode_prob[bsize - BLOCK_8X8] - [palette_ctx])) { - int n; - PALETTE_MODE_INFO *pmi = &mbmi->palette_mode_info; - - pmi->palette_size[0] = - vpx_read_tree(r, vp10_palette_size_tree, - vp10_default_palette_y_size_prob[bsize - BLOCK_8X8]) + 2; - n = pmi->palette_size[0]; - - for (i = 0; i < n; ++i) - pmi->palette_colors[i] = vpx_read_literal(r, cm->bit_depth); - - xd->plane[0].color_index_map[0] = read_uniform(r, n); - assert(xd->plane[0].color_index_map[0] < n); - } -} - -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); - - mbmi->palette_mode_info.palette_size[0] = 0; - mbmi->palette_mode_info.palette_size[1] = 0; - if (bsize >= BLOCK_8X8 && cm->allow_screen_content_tools && - mbmi->mode == DC_PRED) - read_palette_mode_info(cm, xd, r); -} - -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); - - mbmi->palette_mode_info.palette_size[0] = 0; - mbmi->palette_mode_info.palette_size[1] = 0; -} - -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); -} - -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; - } - } - } -} |