int percent_refresh;
// Maximum q-delta as percentage of base q.
int max_qdelta_perc;
- // Block size below which we don't apply cyclic refresh.
- BLOCK_SIZE min_block_size;
// Superblock starting index for cycling through the frame.
int sb_index;
// Controls how long block will need to wait to be refreshed again, in
int rdmult;
// Cyclic refresh map.
signed char *map;
- // Thresholds applied to projected rate/distortion of the superblock.
+ // Thresholds applied to the projected rate/distortion of the coding block,
+ // when deciding whether block should be refreshed.
int64_t thresh_rate_sb;
int64_t thresh_dist_sb;
+ // Threshold applied to the motion vector (in units of 1/8 pel) of the
+ // coding block, when deciding whether block should be refreshed.
+ int16_t motion_thresh;
// Rate target ratio to set q delta.
double rate_ratio_qdelta;
};
// mode, and rate/distortion.
static int candidate_refresh_aq(const CYCLIC_REFRESH *cr,
const MB_MODE_INFO *mbmi,
- BLOCK_SIZE bsize, int use_rd,
- int64_t rate_sb) {
- if (use_rd) {
- MV mv = mbmi->mv[0].as_mv;
- // If projected rate is below the thresh_rate (well below target,
- // so undershoot expected), accept it for lower-qp coding.
- if (rate_sb < cr->thresh_rate_sb)
- return 1;
- // Otherwise, reject the block for lower-qp coding if any of the following:
- // 1) mode uses large mv
- // 2) mode is an intra-mode (we may want to allow some of this under
- // another thresh_dist)
- else if (mv.row > 32 || mv.row < -32 ||
- mv.col > 32 || mv.col < -32 || !is_inter_block(mbmi))
- return 0;
- else
- return 1;
- } else {
- // Rate/distortion not used for update.
- if (bsize < cr->min_block_size ||
- mbmi->mv[0].as_int != 0 ||
- !is_inter_block(mbmi))
- return 0;
- else
- return 1;
- }
+ int64_t rate,
+ int64_t dist) {
+ MV mv = mbmi->mv[0].as_mv;
+ // If projected rate is below the thresh_rate accept it for lower-qp coding.
+ // Otherwise, reject the block for lower-qp coding if projected distortion
+ // is above the threshold, and any of the following is true:
+ // 1) mode uses large mv
+ // 2) mode is an intra-mode
+ if (rate < cr->thresh_rate_sb)
+ return 1;
+ else if (dist > cr->thresh_dist_sb &&
+ (mv.row > cr->motion_thresh || mv.row < -cr->motion_thresh ||
+ mv.col > cr->motion_thresh || mv.col < -cr->motion_thresh ||
+ !is_inter_block(mbmi)))
+ return 0;
+ else
+ return 1;
}
// Compute delta-q for the segment.
void vp9_cyclic_refresh_update_segment(VP9_COMP *const cpi,
MB_MODE_INFO *const mbmi,
int mi_row, int mi_col,
- BLOCK_SIZE bsize, int use_rd,
- int64_t rate_sb) {
+ BLOCK_SIZE bsize,
+ int64_t rate,
+ int64_t dist) {
const VP9_COMMON *const cm = &cpi->common;
CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
const int bw = num_8x8_blocks_wide_lookup[bsize];
const int xmis = MIN(cm->mi_cols - mi_col, bw);
const int ymis = MIN(cm->mi_rows - mi_row, bh);
const int block_index = mi_row * cm->mi_cols + mi_col;
- const int refresh_this_block = candidate_refresh_aq(cr, mbmi, bsize, use_rd,
- rate_sb);
+ const int refresh_this_block = candidate_refresh_aq(cr, mbmi, rate, dist);
// Default is to not update the refresh map.
int new_map_value = cr->map[block_index];
int x = 0; int y = 0;
const double q = vp9_convert_qindex_to_q(cm->base_qindex, cm->bit_depth);
vp9_clear_system_state();
cr->max_qdelta_perc = 50;
- cr->min_block_size = BLOCK_8X8;
cr->time_for_refresh = 0;
- // Set rate threshold to some fraction of target (and scaled by 256).
- cr->thresh_rate_sb = (rc->sb64_target_rate * 256) >> 2;
+ // Set rate threshold to some fraction (set to 1 for now) of the target
+ // rate (target is given by sb64_target_rate and scaled by 256).
+ cr->thresh_rate_sb = (rc->sb64_target_rate << 8);
// Distortion threshold, quadratic in Q, scale factor to be adjusted.
- cr->thresh_dist_sb = 8 * (int)(q * q);
- if (cpi->sf.use_nonrd_pick_mode) {
- // May want to be more conservative with thresholds in non-rd mode for now
- // as rate/distortion are derived from model based on prediction residual.
- cr->thresh_rate_sb = (rc->sb64_target_rate * 256);
- cr->thresh_dist_sb = 16 * (int)(q * q);
- }
-
+ cr->thresh_dist_sb = (int)(q * q) << 5;
+ cr->motion_thresh = 32;
// Set up segmentation.
// Clear down the segment map.
vp9_enable_segmentation(&cm->seg);
// Else for cyclic refresh mode update the segment map, set the segment id
// and then update the quantizer.
if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ) {
- vp9_cyclic_refresh_update_segment(cpi, &xd->mi[0].src_mi->mbmi,
- mi_row, mi_col, bsize, 1, ctx->rate);
+ vp9_cyclic_refresh_update_segment(cpi, &xd->mi[0].src_mi->mbmi, mi_row,
+ mi_col, bsize, ctx->rate, ctx->dist);
}
}
: cm->last_frame_seg_map;
mbmi->segment_id = vp9_get_segment_id(cm, map, bsize, mi_row, mi_col);
} else {
- // Setting segmentation map for cyclic_refresh
- vp9_cyclic_refresh_update_segment(cpi, mbmi, mi_row, mi_col, bsize, 1,
- ctx->rate);
+ // Setting segmentation map for cyclic_refresh.
+ vp9_cyclic_refresh_update_segment(cpi, mbmi, mi_row, mi_col, bsize,
+ ctx->rate, ctx->dist);
}
vp9_init_plane_quantizers(cpi, x);
}
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