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tsdemux: Fix newsegment when switching programs

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If a program/stream is changed, then a newsegment is sent which must
not be the same as the base segment since it happens later. We must
shift the start position by the time elapsed since the newsegment
and the current PTS of the stream
This commit is contained in:
Youness Alaoui 2011-08-16 22:05:14 +00:00 committed by Sebastian Dröge
parent 4cc1dfb360
commit 382710e200
1 changed files with 17 additions and 4 deletions
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21
gst/mpegtsdemux/tsdemux.c
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@ -1946,6 +1946,8 @@ gst_ts_demux_parse_pes_header (GstTSDemux * demux, TSDemuxStream * stream)
#endif
stream->pts = time = MPEGTIME_TO_GSTTIME (header.PTS);
GST_DEBUG_OBJECT (base, "stream PTS %" GST_TIME_FORMAT,
GST_TIME_ARGS (stream->pts));
/* safe default if insufficient upstream info */
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (base->in_gap) &&
@ -2070,8 +2072,10 @@ calculate_and_push_newsegment (GstTSDemux * demux, TSDemuxStream * stream)
MpegTSBase *base = (MpegTSBase *) demux;
GstEvent *newsegmentevent;
gint64 start, stop, position;
GstClockTime firstpts = GST_CLOCK_TIME_NONE;
GList *tmp;
GST_DEBUG ("Creating new newsegment");
GST_DEBUG ("Creating new newsegment for stream %p", stream);
/* Outgoing newsegment values
* start : The first/start PTS
@ -2083,6 +2087,13 @@ calculate_and_push_newsegment (GstTSDemux * demux, TSDemuxStream * stream)
* PTS to that remote clock).
*/
for (tmp = demux->program->stream_list; tmp; tmp = tmp->next) {
TSDemuxStream *pstream = (TSDemuxStream *) tmp->data;
if (!GST_CLOCK_TIME_IS_VALID (firstpts) || pstream->pts < firstpts)
firstpts = pstream->pts;
}
if (base->mode == BASE_MODE_PUSHING) {
/* FIXME : We're just ignore the upstream format for the time being */
/* FIXME : We should use base->segment.format and a upstream latency query
@ -2098,12 +2109,14 @@ calculate_and_push_newsegment (GstTSDemux * demux, TSDemuxStream * stream)
GST_TIME_ARGS (demux->segment.duration),
GST_TIME_ARGS (demux->segment.time));
if (demux->segment.time == 0 && base->segment.format == GST_FORMAT_TIME)
demux->segment.time = base->segment.time;
GST_DEBUG ("stream pts: %" GST_TIME_FORMAT " first pts: %" GST_TIME_FORMAT,
GST_TIME_ARGS (stream->pts), GST_TIME_ARGS (firstpts));
start = base->segment.start;
stop = base->segment.stop;
position = base->segment.time;
/* Shift the start depending on our position in the stream */
start += firstpts + base->in_gap - base->first_buf_ts;
position = start;
} else {
/* pull mode */
GST_DEBUG ("pull-based. Segment start:%" GST_TIME_FORMAT " duration:%"