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matroskadec: simplify, first_timecode is already in the index 

no need to duplicate it

Originally committed as revision 15302 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2008-09-12 00:06:06 +00:00
parent 5358a81f9c
commit a8fd7e764a
1 changed files with 5 additions and 16 deletions
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21
libavformat/matroskadec.c
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@ -139,7 +139,6 @@ typedef struct {
EbmlList encodings;
AVStream *stream;
int64_t first_timecode;
int64_t end_timecode;
} MatroskaTrack;
@ -1182,7 +1181,6 @@ static int matroska_read_header(AVFormatContext *s, AVFormatParameters *ap)
st = track->stream = av_new_stream(s, 0);
if (st == NULL)
return AVERROR(ENOMEM);
track->first_timecode = AV_NOPTS_VALUE;
if (!strcmp(track->codec_id, "V_MS/VFW/FOURCC")
&& track->codec_priv.size >= 40
@ -1468,11 +1466,8 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data,
if (track->type == MATROSKA_TRACK_TYPE_SUBTITLE
&& timecode < track->end_timecode)
is_keyframe = 0; /* overlapping subtitles are not key frame */
if (is_keyframe) {
if (is_keyframe)
av_add_index_entry(st, cluster_pos, timecode, 0,0,AVINDEX_KEYFRAME);
if (track->first_timecode == AV_NOPTS_VALUE)
track->first_timecode = timecode;
}
track->end_timecode = FFMAX(track->end_timecode, timecode+duration);
}
@ -1697,19 +1692,13 @@ static int matroska_read_seek(AVFormatContext *s, int stream_index,
MatroskaTrack *tracks = matroska->tracks.elem;
AVStream *st = s->streams[stream_index];
int i, index, index_sub, index_min;
int64_t first_timecode = 0;
for (i=0; i < matroska->tracks.nb_elem; i++)
if (tracks[i].stream->index == stream_index &&
tracks[i].first_timecode != AV_NOPTS_VALUE)
first_timecode = tracks[i].first_timecode;
if (timestamp < first_timecode)
timestamp = first_timecode;
if (!st->nb_index_entries)
return 0;
timestamp = FFMAX(timestamp, st->index_entries[0].timestamp);
if ((index = av_index_search_timestamp(st, timestamp, flags)) < 0) {
if (st->nb_index_entries)
url_fseek(s->pb, st->index_entries[st->nb_index_entries-1].pos, SEEK_SET);
url_fseek(s->pb, st->index_entries[st->nb_index_entries-1].pos, SEEK_SET);
while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0) {
matroska_clear_queue(matroska);
if (matroska_parse_cluster(matroska) < 0)