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store searched distance in index, so we dont waste time searching for keyframes where we already searched

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asf seek fixes & use keyframe pos/timestamp cache

Originally committed as revision 2709 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2004-01-17 18:06:52 +00:00
parent fb204d4bc1
commit 3e9245a98e
4 changed files with 88 additions and 26 deletions
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15
libavformat/utils.c
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@ -861,8 +861,8 @@ static void av_read_frame_flush(AVFormatContext *s)
}
/* add a index entry into a sorted list updateing if it is already there */
void av_add_index_entry(AVStream *st,
int64_t pos, int64_t timestamp, int flags)
int av_add_index_entry(AVStream *st,
int64_t pos, int64_t timestamp, int distance, int flags)
{
AVIndexEntry *entries, *ie;
int index;
@ -890,12 +890,17 @@ void av_add_index_entry(AVStream *st,
}
st->nb_index_entries++;
}
}else
ie= &entries[st->nb_index_entries++];
}else{
index= st->nb_index_entries++;
ie= &entries[index];
}
ie->pos = pos;
ie->timestamp = timestamp;
ie->min_distance= distance;
ie->flags = flags;
return index;
}
/* build an index for raw streams using a parser */
@ -916,7 +921,7 @@ static void av_build_index_raw(AVFormatContext *s)
if (pkt->stream_index == 0 && st->parser &&
(pkt->flags & PKT_FLAG_KEY)) {
av_add_index_entry(st, st->parser->frame_offset, pkt->dts,
AVINDEX_KEYFRAME);
0, AVINDEX_KEYFRAME);
}
av_free_packet(pkt);
}