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Merge "vp9: Some code cleanup for aq-mode = 3."

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Marco Paniconi 2017-02-15 23:03:27 +00:00 committed by Gerrit Code Review
commit e6cf741ae6
2 changed files with 20 additions and 17 deletions
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36
vp9/encoder/vp9_aq_cyclicrefresh.c
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@ -127,31 +127,16 @@ int vp9_cyclic_refresh_rc_bits_per_mb(const VP9_COMP *cpi, int i,
const VP9_COMMON *const cm = &cpi->common;
CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
int bits_per_mb;
int num8x8bl = cm->MBs << 2;
int deltaq = 0;
// Weight for segment prior to encoding: take the average of the target
// number for the frame to be encoded and the actual from the previous frame.
// Use the target if its less.
int target_refresh = cr->percent_refresh * cm->mi_rows * cm->mi_cols / 100;
double weight_segment_target = (double)(target_refresh) / num8x8bl;
double weight_segment =
(double)((target_refresh + cr->actual_num_seg1_blocks +
cr->actual_num_seg2_blocks) >>
1) /
num8x8bl;
if (weight_segment_target < 7 * weight_segment / 8)
weight_segment = weight_segment_target;
// Compute delta-q corresponding to qindex i.
// Take a quick estimate for speed >=8, half of the max allowed deltaq.
if (cpi->oxcf.speed < 8)
deltaq = compute_deltaq(cpi, i, cr->rate_ratio_qdelta);
else
deltaq = -(cr->max_qdelta_perc * i) / 200;
// Take segment weighted average for bits per mb.
bits_per_mb = (int)((1.0 - weight_segment) *
bits_per_mb = (int)((1.0 - cr->weight_segment) *
vp9_rc_bits_per_mb(cm->frame_type, i,
correction_factor, cm->bit_depth) +
weight_segment *
cr->weight_segment *
vp9_rc_bits_per_mb(cm->frame_type, i + deltaq,
correction_factor, cm->bit_depth));
return bits_per_mb;
@ -458,6 +443,10 @@ void vp9_cyclic_refresh_update_parameters(VP9_COMP *const cpi) {
const RATE_CONTROL *const rc = &cpi->rc;
const VP9_COMMON *const cm = &cpi->common;
CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
int num8x8bl = cm->MBs << 2;
int target_refresh = 0;
double weight_segment_target = 0;
double weight_segment = 0;
cr->percent_refresh = 10;
if (cr->reduce_refresh) cr->percent_refresh = 5;
cr->max_qdelta_perc = 60;
@ -505,6 +494,19 @@ void vp9_cyclic_refresh_update_parameters(VP9_COMP *const cpi) {
cr->rate_ratio_qdelta = 1.0;
}
}
// Weight for segment prior to encoding: take the average of the target
// number for the frame to be encoded and the actual from the previous frame.
// Use the target if its less. To be used for setting the base qp for the
// frame in vp9_rc_regulate_q.
target_refresh = cr->percent_refresh * cm->mi_rows * cm->mi_cols / 100;
weight_segment_target = (double)(target_refresh) / num8x8bl;
weight_segment = (double)((target_refresh + cr->actual_num_seg1_blocks +
cr->actual_num_seg2_blocks) >>
1) /
num8x8bl;
if (weight_segment_target < 7 * weight_segment / 8)
weight_segment = weight_segment_target;
cr->weight_segment = weight_segment;
}
// Setup cyclic background refresh: set delta q and segmentation map.

1
vp9/encoder/vp9_aq_cyclicrefresh.h
View File

@ -66,6 +66,7 @@ struct CYCLIC_REFRESH {
double low_content_avg;
int qindex_delta[3];
int reduce_refresh;
double weight_segment;
};
struct VP9_COMP;