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avidec: correct frame_offset for seeking

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-05-06 03:52:16 +02:00
parent cde5589717
commit 187528441a
1 changed files with 17 additions and 1 deletions
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18
libavformat/avidec.c
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@ -1303,7 +1303,7 @@ static int avi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp
{
AVIContext *avi = s->priv_data;
AVStream *st;
int i, index;
int i, index, j;
int64_t pos, pos_min;
AVIStream *ast;
@ -1367,6 +1367,22 @@ static int avi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp
index=0;
ast2->seek_pos= st2->index_entries[index].pos;
pos_min= FFMIN(pos_min,ast2->seek_pos);
}
for(i = 0; i < s->nb_streams; i++) {
AVStream *st2 = s->streams[i];
AVIStream *ast2 = st2->priv_data;
if (ast2->sub_ctx || st2->nb_index_entries <= 0)
continue;
index = av_index_search_timestamp(
st2,
av_rescale_q(timestamp, st->time_base, st2->time_base) * FFMAX(ast2->sample_size, 1),
flags | AVSEEK_FLAG_BACKWARD);
if(index<0)
index=0;
while(index>0 && st2->index_entries[index-1].pos >= pos_min)
index--;
ast2->frame_offset = st2->index_entries[index].timestamp;
}