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Fixed incorrect use of compute_qdelta()

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This function expects real Q values as inputs
not index values.

The use-age her impacts the Q chosen for force key
frames. Though this is a bug fix I have not yet verified
whether following the bug fix the q multiplier value used is
correct.

Change-Id: I49f6da894d90baeb1e86c820c335f02dc80d3b66
This commit is contained in:
Paul Wilkins 2013-03-28 19:46:35 +00:00
parent 74e8bd11c2
commit 9b9136f8a2
1 changed files with 7 additions and 2 deletions
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9
vp9/encoder/vp9_onyx_if.c
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@ -2735,8 +2735,13 @@ static void encode_frame_to_data_rate(VP9_COMP *cpi,
// the maximum key frame interval. Here force the Q to a range // the maximum key frame interval. Here force the Q to a range
// based on the ambient Q to reduce the risk of popping // based on the ambient Q to reduce the risk of popping
if (cpi->this_key_frame_forced) { if (cpi->this_key_frame_forced) {
const int qindex = cpi->last_boosted_qindex; int delta_qindex;
const int delta_qindex = compute_qdelta(cpi, qindex, qindex * 0.75); int qindex = cpi->last_boosted_qindex;
double last_boosted_q = vp9_convert_qindex_to_q(qindex);
delta_qindex = compute_qdelta(cpi, last_boosted_q,
(last_boosted_q * 0.75));
cpi->active_best_quality = MAX(qindex + delta_qindex, cpi->best_quality); cpi->active_best_quality = MAX(qindex + delta_qindex, cpi->best_quality);
} }