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Merge "Fix to avoid abrupt relaxation of max qindex in recode path"

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This commit is contained in:
Paul Wilkins
2017-02-09 17:17:55 +00:00
committed by Gerrit Code Review
parent 82b88a7fd0 5f21aba4b0
commit c3f095c8b3
3 changed files with 23 additions and 2 deletions
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10
vp9/encoder/vp9_encoder.c
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@@ -3507,8 +3507,14 @@ static void encode_with_recode_loop(VP9_COMP *cpi, size_t *size,
// Frame is too large
if (rc->projected_frame_size > rc->this_frame_target) {
// Special case if the projected size is > the max allowed.
if (rc->projected_frame_size >= rc->max_frame_bandwidth)
q_high = rc->worst_quality;
if (rc->projected_frame_size >= rc->max_frame_bandwidth) {
double q_val_high;
q_val_high = vp9_convert_qindex_to_q(q_high, cm->bit_depth);
q_val_high = q_val_high * ((double)rc->projected_frame_size /
rc->max_frame_bandwidth);
q_high = vp9_convert_q_to_qindex(q_val_high, cm->bit_depth);
q_high = clamp(q_high, rc->best_quality, rc->worst_quality);
}
// Raise Qlow as to at least the current value
qstep =

13
vp9/encoder/vp9_ratectrl.c
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@@ -166,6 +166,19 @@ double vp9_convert_qindex_to_q(int qindex, vpx_bit_depth_t bit_depth) {
#endif
}
int vp9_convert_q_to_qindex(double q_val, vpx_bit_depth_t bit_depth) {
int i;
for (i = 0; i < QINDEX_RANGE; ++i)
if (vp9_convert_qindex_to_q(i, bit_depth) >= q_val)
break;
if (i == QINDEX_RANGE)
i--;
return i;
}
int vp9_rc_bits_per_mb(FRAME_TYPE frame_type, int qindex,
double correction_factor, vpx_bit_depth_t bit_depth) {
const double q = vp9_convert_qindex_to_q(qindex, bit_depth);

2
vp9/encoder/vp9_ratectrl.h
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@@ -179,6 +179,8 @@ int vp9_estimate_bits_at_q(FRAME_TYPE frame_kind, int q, int mbs,
double vp9_convert_qindex_to_q(int qindex, vpx_bit_depth_t bit_depth);
int vp9_convert_q_to_qindex(double q_val, vpx_bit_depth_t bit_depth);
void vp9_rc_init_minq_luts(void);
int vp9_rc_get_default_min_gf_interval(int width, int height, double framerate);