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h264: Calculate a tighter recovery_frame. 

Reduces delay with mplayers TS demuxer.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-10-24 12:17:24 +02:00
parent 63f0708478
commit 35075dc650
1 changed files with 2 additions and 1 deletions
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3
libavcodec/h264.c
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@ -3863,7 +3863,8 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
if((err = decode_slice_header(hx, h)))
break;
if (h->sei_recovery_frame_cnt >= 0 && h->recovery_frame < 0) {
if ( h->sei_recovery_frame_cnt >= 0
&& (h->recovery_frame - h->frame_num) & ((1 << h->sps.log2_max_frame_num)-1) > h->sei_recovery_frame_cnt) {
h->recovery_frame = (h->frame_num + h->sei_recovery_frame_cnt) %
(1 << h->sps.log2_max_frame_num);
}