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gsttestsrcbin: Avoid not-linked errors when switching tracks

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The previous implementation had a very high reproducibility race where
if after a track switch, the ex-active track pad completed a buffer
chain (now returning not-linked) the flow combiner had all their pads in
non-linked state, propagating it as an error and stopping the pipeline.

By resetting the flow combiner in response to RECONFIGURE events that
race is made impossible.
This commit is contained in:
Alicia Boya García 2019-12-09 17:54:02 +01:00
parent 3bae199863
commit f816903e65
1 changed files with 13 additions and 0 deletions
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13
gst/debugutils/gsttestsrcbin.c
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@ -176,12 +176,18 @@ gst_test_src_bin_chain (GstPad * pad, GstObject * object, GstBuffer * buffer)
GstTestSrcBin *self = GST_TEST_SRC_BIN (gst_object_get_parent (object));
chain_res = gst_proxy_pad_chain_default (pad, GST_OBJECT (self), buffer);
GST_OBJECT_LOCK (self);
res = gst_flow_combiner_update_pad_flow (self->flow_combiner, pad, chain_res);
GST_OBJECT_UNLOCK (self);
gst_object_unref (self);
if (res == GST_FLOW_FLUSHING)
return chain_res;
if (res == GST_FLOW_NOT_LINKED)
GST_WARNING_OBJECT (pad,
"all testsrcbin pads not linked, returning not-linked.");
return res;
}
@ -219,6 +225,13 @@ static gboolean
gst_test_src_event_function (GstPad * pad, GstObject * parent, GstEvent * event)
{
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_RECONFIGURE:{
GstTestSrcBin *self = GST_TEST_SRC_BIN (parent);
GST_OBJECT_LOCK (self);
gst_flow_combiner_reset (self->flow_combiner);
GST_OBJECT_UNLOCK (self);
break;
}
case GST_EVENT_SEEK:{
ForwardEventData data = { event, TRUE, parent };