generic-library/vpx
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Merge "guard against space/time distortion"

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John Koleszar 2011-06-29 11:36:51 -07:00 committed by Code Review
commit 034cea5e72
1 changed files with 5 additions and 0 deletions
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vpxenc.c
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@ -1347,6 +1347,8 @@ static void update_rate_histogram(struct rate_hist *hist,
if(now < cfg->rc_buf_initial_sz) if(now < cfg->rc_buf_initial_sz)
return; return;
then = now;
/* Sum the size over the past rc_buf_sz ms */ /* Sum the size over the past rc_buf_sz ms */
for(i = hist->frames; i > 0 && hist->frames - i < hist->samples; i--) for(i = hist->frames; i > 0 && hist->frames - i < hist->samples; i--)
{ {
@ -1358,6 +1360,9 @@ static void update_rate_histogram(struct rate_hist *hist,
sum_sz += hist->sz[i_idx]; sum_sz += hist->sz[i_idx];
} }
if (now == then)
return;
avg_bitrate = sum_sz * 8 * 1000 / (now - then); avg_bitrate = sum_sz * 8 * 1000 / (now - then);
idx = avg_bitrate * (RATE_BINS/2) / (cfg->rc_target_bitrate * 1000); idx = avg_bitrate * (RATE_BINS/2) / (cfg->rc_target_bitrate * 1000);
if(idx < 0) if(idx < 0)