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oggdemux: use the index in push mode when we can

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When seeking in push mode, try to use the index first before we use the bitrate
estimation.
This commit is contained in:
Wim Taymans 2010-05-04 13:36:58 +02:00
parent 03c3aa6377
commit a57b461af8
1 changed files with 42 additions and 31 deletions
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73
ext/ogg/gstoggdemux.c
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@ -1956,7 +1956,7 @@ gst_ogg_demux_do_seek (GstOggDemux * ogg, GstSegment * segment,
gint64 begin, end;
gint64 begintime, endtime;
gint64 target, keytarget;
gint64 best, best_time;
gint64 best;
gint64 total;
gint64 result = 0;
GstFlowReturn ret;
@ -1983,22 +1983,6 @@ gst_ogg_demux_do_seek (GstOggDemux * ogg, GstSegment * segment,
endtime = begintime + chain->total_time;
target = position - total + begintime;
if (do_index_search (ogg, chain, begin, end, begintime, endtime, target,
&best, &best_time)) {
/* the index gave some result */
GST_DEBUG_OBJECT (ogg,
"found offset %" G_GINT64_FORMAT " with time %" G_GUINT64_FORMAT, best,
best_time);
#if 1
keytarget = best_time + begintime;
best += begin;
gst_ogg_demux_seek (ogg, best);
goto done;
#endif
}
if (!do_binary_search (ogg, chain, begin, end, begintime, endtime, target,
&best))
goto seek_error;
@ -2376,36 +2360,63 @@ static gboolean
gst_ogg_demux_perform_seek_push (GstOggDemux * ogg, GstEvent * event)
{
gint bitrate;
gboolean res;
gboolean res = TRUE;
GstFormat format;
gdouble rate;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
GstEvent *sevent;
GstOggChain *chain;
gint64 best, best_time;
bitrate = ogg->bitrate;
gst_event_parse_seek (event, &rate, &format, &flags,
&start_type, &start, &stop_type, &stop);
if (bitrate > 0) {
GstFormat format;
gdouble rate;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
GstEvent *sevent;
if (format != GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (ogg, "can only seek on TIME");
goto error;
}
gst_event_parse_seek (event, &rate, &format, &flags,
&start_type, &start, &stop_type, &stop);
chain = ogg->current_chain;
/* convert the seek positions to bytes */
if (do_index_search (ogg, chain, 0, -1, 0, -1, start, &best, &best_time)) {
/* the index gave some result */
GST_DEBUG_OBJECT (ogg,
"found offset %" G_GINT64_FORMAT " with time %" G_GUINT64_FORMAT,
best, best_time);
start = best;
} else if ((bitrate = ogg->bitrate) > 0) {
/* try with bitrate convert the seek positions to bytes */
if (start_type != GST_SEEK_TYPE_NONE) {
start = gst_util_uint64_scale (start, bitrate, 8 * GST_SECOND);
}
if (stop_type != GST_SEEK_TYPE_NONE) {
stop = gst_util_uint64_scale (stop, bitrate, 8 * GST_SECOND);
}
} else {
/* we don't know */
res = FALSE;
}
if (res) {
GST_DEBUG_OBJECT (ogg,
"seeking to %" G_GINT64_FORMAT " - %" G_GINT64_FORMAT, start, stop);
/* do seek */
sevent = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags,
start_type, start, stop_type, stop);
res = gst_pad_push_event (ogg->sinkpad, sevent);
} else {
res = FALSE;
}
return res;
/* ERRORS */
error:
{
GST_DEBUG_OBJECT (ogg, "seek failed");
return FALSE;
}
}
static gboolean