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input-selector: Wake up blocking pads when releasing them

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Otherwise deactivating them will cause a deadlock as they're blocking
inside the streaming thread.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/601

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/606>
This commit is contained in:
Sebastian Dröge 2020-08-24 11:59:51 +03:00 committed by GStreamer Merge Bot
parent 00fd649640
commit 5bab6154aa
1 changed files with 9 additions and 0 deletions
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9
plugins/elements/gstinputselector.c
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@ -1821,9 +1821,11 @@ gst_input_selector_request_new_pad (GstElement * element,
static void
gst_input_selector_release_pad (GstElement * element, GstPad * pad)
{
GstSelectorPad *selpad;
GstInputSelector *sel;
sel = GST_INPUT_SELECTOR (element);
selpad = GST_SELECTOR_PAD (pad);
GST_LOG_OBJECT (sel, "Releasing pad %s:%s", GST_DEBUG_PAD_NAME (pad));
GST_INPUT_SELECTOR_LOCK (sel);
@ -1834,6 +1836,13 @@ gst_input_selector_release_pad (GstElement * element, GstPad * pad)
sel->active_sinkpad = NULL;
sel->active_sinkpad_from_user = FALSE;
}
/* wake up the pad if it's currently waiting for EOS or a running time to be
* reached. Otherwise we'll deadlock on the streaming thread further below
* when deactivating the pad. */
selpad->flushing = TRUE;
GST_INPUT_SELECTOR_BROADCAST (sel);
sel->n_pads--;
GST_INPUT_SELECTOR_UNLOCK (sel);