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aggregator: Start the task when linked

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Until now we would start the task when the pad is activated. Part of the
activiation concist of testing if the pipeline is live or not.
Unfortunatly, this is often too soon, as it's likely that the pad get
activated before it is fully linked in dynamic pipeline.

Instead, start the task when the first serialized event arrive. This is
a safe moment as we know that the upstream chain is complete and just
like the pad activation, the pads are locked, hence cannot change.

https://bugzilla.gnome.org/show_bug.cgi?id=757548
This commit is contained in:
Nicolas Dufresne 2016-04-13 16:30:28 -04:00 committed by Tim-Philipp Müller
parent 834015009f
commit 3b05c55222
1 changed files with 7 additions and 6 deletions
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13
libs/gst/base/gstaggregator.c
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@ -922,9 +922,11 @@ gst_aggregator_start_srcpad_task (GstAggregator * self)
{
GST_INFO_OBJECT (self, "Starting srcpad task");
self->priv->running = TRUE;
gst_pad_start_task (GST_PAD (self->srcpad),
(GstTaskFunction) gst_aggregator_aggregate_func, self, NULL);
if (gst_pad_is_active (self->srcpad)) {
self->priv->running = TRUE;
gst_pad_start_task (GST_PAD (self->srcpad),
(GstTaskFunction) gst_aggregator_aggregate_func, self, NULL);
}
}
static GstFlowReturn
@ -1137,6 +1139,7 @@ gst_aggregator_default_sink_event (GstAggregator * self,
}
case GST_EVENT_STREAM_START:
{
gst_aggregator_start_srcpad_task (self);
goto eat;
}
case GST_EVENT_GAP:
@ -1363,7 +1366,6 @@ gst_aggregator_request_new_pad (GstElement * element,
GstAggregator *self;
GstAggregatorPad *agg_pad;
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (element);
GstAggregatorPrivate *priv = GST_AGGREGATOR (element)->priv;
self = GST_AGGREGATOR (element);
@ -1376,7 +1378,7 @@ gst_aggregator_request_new_pad (GstElement * element,
GST_DEBUG_OBJECT (element, "Adding pad %s", GST_PAD_NAME (agg_pad));
self->priv->has_peer_latency = FALSE;
if (priv->running)
if (gst_pad_is_active (self->srcpad))
gst_pad_set_active (GST_PAD (agg_pad), TRUE);
/* add the pad to the element */
@ -1785,7 +1787,6 @@ gst_aggregator_src_pad_activate_mode_func (GstPad * pad,
case GST_PAD_MODE_PUSH:
{
GST_INFO_OBJECT (pad, "Activating pad!");
gst_aggregator_start_srcpad_task (self);
return TRUE;
}
default: