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adaptivedemux: fix segment start when exposing new streams

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Segment start needs only to be updated when starting the streams
or after a seek, doing it during bitrate changes will cause the
running time to go discontinuous (jump back to a previous ts)
and QOS will drop buffers
This commit is contained in:
Thiago Santos 2014-12-23 01:48:41 -03:00
parent 73fb0850c9
commit 0bef1974e2
1 changed files with 18 additions and 13 deletions
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31
gst-libs/gst/adaptivedemux/gstadaptivedemux.c
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@ -134,7 +134,8 @@ static void gst_adaptive_demux_updates_loop (GstAdaptiveDemux * demux);
static void gst_adaptive_demux_stream_download_loop (GstAdaptiveDemuxStream *
stream);
static void gst_adaptive_demux_reset (GstAdaptiveDemux * demux);
static gboolean gst_adaptive_demux_expose_streams (GstAdaptiveDemux * demux);
static gboolean gst_adaptive_demux_expose_streams (GstAdaptiveDemux * demux,
gboolean first_segment);
static gboolean gst_adaptive_demux_is_live (GstAdaptiveDemux * demux);
static GstFlowReturn gst_adaptive_demux_stream_seek (GstAdaptiveDemux * demux,
GstAdaptiveDemuxStream * stream, GstClockTime ts);
@ -403,7 +404,7 @@ gst_adaptive_demux_sink_event (GstPad * pad, GstObject * parent,
}
if (demux->next_streams) {
gst_adaptive_demux_expose_streams (demux);
gst_adaptive_demux_expose_streams (demux, TRUE);
gst_adaptive_demux_start_tasks (demux);
if (gst_adaptive_demux_is_live (demux)) {
/* Task to periodically update the manifest */
@ -613,7 +614,8 @@ gst_adaptive_demux_expose_stream (GstAdaptiveDemux * demux,
}
static gboolean
gst_adaptive_demux_expose_streams (GstAdaptiveDemux * demux)
gst_adaptive_demux_expose_streams (GstAdaptiveDemux * demux,
gboolean first_segment)
{
GList *iter;
GList *old_streams;
@ -634,17 +636,20 @@ gst_adaptive_demux_expose_streams (GstAdaptiveDemux * demux)
/* TODO act on error */
}
/* TODO we only need the first timestamp, maybe create a simple function */
gst_adaptive_demux_stream_update_fragment_info (demux, stream);
if (first_segment) {
/* TODO we only need the first timestamp, maybe create a simple function */
gst_adaptive_demux_stream_update_fragment_info (demux, stream);
if (GST_CLOCK_TIME_IS_VALID (min_pts)) {
min_pts = MIN (min_pts, stream->fragment.timestamp);
} else {
min_pts = stream->fragment.timestamp;
if (GST_CLOCK_TIME_IS_VALID (min_pts)) {
min_pts = MIN (min_pts, stream->fragment.timestamp);
} else {
min_pts = stream->fragment.timestamp;
}
}
}
demux->segment.start = demux->segment.position = min_pts;
if (first_segment)
demux->segment.start = demux->segment.position = min_pts;
for (iter = demux->streams; iter; iter = g_list_next (iter)) {
GstAdaptiveDemuxStream *stream = iter->data;
@ -869,7 +874,7 @@ gst_adaptive_demux_src_event (GstPad * pad, GstObject * parent,
gst_adaptive_demux_push_src_event (demux, fevent);
}
if (demux->next_streams) {
gst_adaptive_demux_expose_streams (demux);
gst_adaptive_demux_expose_streams (demux, TRUE);
}
/* Restart the demux */
@ -1872,7 +1877,7 @@ gst_adaptive_demux_stream_download_loop (GstAdaptiveDemuxStream * stream)
/* TODO only allow switching streams if other downloads are not ongoing */
GST_DEBUG_OBJECT (demux, "Subclass wants new pads "
"to do bitrate switching");
gst_adaptive_demux_expose_streams (demux);
gst_adaptive_demux_expose_streams (demux, FALSE);
gst_adaptive_demux_start_tasks (demux);
ret = GST_FLOW_EOS;
GST_MANIFEST_UNLOCK (demux);
@ -2299,7 +2304,7 @@ gst_adaptive_demux_advance_period (GstAdaptiveDemux * demux)
GST_DEBUG_OBJECT (demux, "Advancing to next period");
klass->advance_period (demux);
gst_adaptive_demux_expose_streams (demux);
gst_adaptive_demux_expose_streams (demux, TRUE);
gst_adaptive_demux_start_tasks (demux);
}