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_8x8[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 = vp9_get_segment_id(cm, cm->last_frame_seg_map,
bsize, mi_row, mi_col);
if (!seg->update_map)
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_inter_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd,
int mi_row, int mi_col, vpx_reader *r) {
struct segmentation *const seg = &cm->seg;
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 = MIN(cm->mi_cols - mi_col, bw);
const int y_mis = MIN(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 vpx_prob pred_prob = vp9_get_pred_prob_seg_id(seg, xd);
mbmi->seg_id_predicted = vpx_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, mi_offset, x_mis, y_mis, segment_id);
return segment_id;
}
static void pack_inter_mode_mvs(VP9_COMP *cpi, const MODE_INFO *mi,
vpx_writer *w) {
VP9_COMMON *const cm = &cpi->common;
const nmv_context *nmvc = &cm->fc->nmvc;
const MACROBLOCK *const x = &cpi->td.mb;
const MACROBLOCKD *const xd = &x->e_mbd;
const struct segmentation *const seg = &cm->seg;
const MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext;
const PREDICTION_MODE mode = mi->mode;
const int segment_id = mi->segment_id;
const BLOCK_SIZE bsize = mi->sb_type;
const int allow_hp = cm->allow_high_precision_mv;
const int is_inter = is_inter_block(mi);
const int is_compound = has_second_ref(mi);
int skip, ref;
if (seg->update_map) {
if (seg->temporal_update) {
const int pred_flag = mi->seg_id_predicted;
vpx_prob pred_prob = vp9_get_pred_prob_seg_id(seg, xd);
vpx_write(w, pred_flag, pred_prob);
if (!pred_flag)
write_segment_id(w, seg, segment_id);
} else {
write_segment_id(w, seg, segment_id);
}
}
skip = write_skip(cm, xd, segment_id, mi, w);
if (!segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME))
vpx_write(w, is_inter, vp9_get_intra_inter_prob(cm, xd));
if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT &&
!(is_inter && skip)) {
write_selected_tx_size(cm, xd, w);
}
if (!is_inter) {
if (bsize >= BLOCK_8X8) {
write_intra_mode(w, mode, cm->fc->y_mode_prob[size_group_lookup[bsize]]);
} else {
int idx, idy;
const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize];
const int num_4x4_h = num_4x4_blocks_high_lookup[bsize];
for (idy = 0; idy < 2; idy += num_4x4_h) {
for (idx = 0; idx < 2; idx += num_4x4_w) {
const PREDICTION_MODE b_mode = mi->bmi[idy * 2 + idx].as_mode;
write_intra_mode(w, b_mode, cm->fc->y_mode_prob[0]);
}
}
}
write_intra_mode(w, mi->uv_mode, cm->fc->uv_mode_prob[mode]);
} else {
const int mode_ctx = mbmi_ext->mode_context[mi->ref_frame[0]];
const vpx_prob *const inter_probs = cm->fc->inter_mode_probs[mode_ctx];
write_ref_frames(cm, xd, w);
// If segment skip is not enabled code the mode.
if (!segfeature_active(seg, segment_id, SEG_LVL_SKIP)) {
if (bsize >= BLOCK_8X8) {
write_inter_mode(w, mode, inter_probs);
}
}
if (cm->interp_filter == SWITCHABLE) {
const int ctx = vp9_get_pred_context_switchable_interp(xd);
vp9_write_token(w, vp9_switchable_interp_tree,
cm->fc->switchable_interp_prob[ctx],
&switchable_interp_encodings[mi->interp_filter]);
++cpi->interp_filter_selected[0][mi->interp_filter];
} else {
assert(mi->interp_filter == cm->interp_filter);
}
if (bsize < BLOCK_8X8) {
const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize];
const int num_4x4_h = num_4x4_blocks_high_lookup[bsize];
int idx, idy;
for (idy = 0; idy < 2; idy += num_4x4_h) {
for (idx = 0; idx < 2; idx += num_4x4_w) {
const int j = idy * 2 + idx;
const PREDICTION_MODE b_mode = mi->bmi[j].as_mode;
write_inter_mode(w, b_mode, inter_probs);
if (b_mode == NEWMV) {
for (ref = 0; ref < 1 + is_compound; ++ref)
vp9_encode_mv(cpi, w, &mi->bmi[j].as_mv[ref].as_mv,
&mbmi_ext->ref_mvs[mi->ref_frame[ref]][0].as_mv,
nmvc, allow_hp);
}
}
}
} else {
if (mode == NEWMV) {
for (ref = 0; ref < 1 + is_compound; ++ref)
vp9_encode_mv(cpi, w, &mi->mv[ref].as_mv,
&mbmi_ext->ref_mvs[mi->ref_frame[ref]][0].as_mv, nmvc,
allow_hp);
}
}
}
}
