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nlecomposition: Handle state change failure

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Whatever the reason for failure, try cleanup child elements
and internal thread.
This commit is contained in:
Seungha Yang 2019-01-09 16:23:54 +09:00
parent a83d539390
commit fd10d69bc5
1 changed files with 24 additions and 2 deletions
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26
plugins/nle/nlecomposition.c
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@ -2455,6 +2455,20 @@ nle_composition_change_state (GstElement * element, GstStateChange transition)
res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (res == GST_STATE_CHANGE_FAILURE) {
GST_ERROR_OBJECT (comp, "state change failure %s => %s",
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
comp->priv->tearing_down_stack = TRUE;
_stop_task (comp);
nle_composition_reset (comp);
gst_element_set_state (comp->priv->current_bin, GST_STATE_NULL);
comp->priv->tearing_down_stack = FALSE;
return res;
}
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
comp->priv->tearing_down_stack = FALSE;
@ -2877,9 +2891,17 @@ _activate_new_stack (NleComposition * comp)
GST_DEBUG_OBJECT (comp, "New stack activated!");
resync_state:
gst_element_set_locked_state (priv->current_bin, FALSE);
if (!gst_element_set_locked_state (priv->current_bin, FALSE)) {
GST_ERROR_OBJECT (comp, "set locked state failure");
return FALSE;
}
GST_DEBUG ("going back to parent state");
gst_element_sync_state_with_parent (priv->current_bin);
if (!gst_element_sync_state_with_parent (priv->current_bin)) {
GST_ERROR_OBJECT (comp, "Cannot sync current stack's state");
return FALSE;
}
GST_DEBUG ("gone back to parent state");
return TRUE;