Stop output sdk watchdog on teardown (#287)

pkg/lksdk_output/lksdk_output.go

@@ -306,6 +306,10 @@ func (s *LKSDKOutput) closeOutput() {
 	// only close the outputs once
 	s.outputs = nil
 
+	if s.watchdog != nil {
+		s.watchdog.Stop()
+	}
+
 	if s.room != nil {
 		s.room.Disconnect()
 	}

pkg/lksdk_output/watchdog.go

@@ -27,12 +27,14 @@ type Watchdog struct {
 	expectedTrackCount int
 	boundTrackCount    int
 	timer              *time.Timer
+	started            bool
 }
 
 func NewWatchdog(onFire func(), deadline time.Duration) *Watchdog {
 	return &Watchdog{
 		onFire:   onFire,
 		deadline: deadline,
+		started:  true,
 	}
 }
 
@@ -63,9 +65,18 @@ func (w *Watchdog) TrackUnbound() {
 	w.updateTimer()
 }
 
+func (w *Watchdog) Stop() {
+	w.trackLock.Lock()
+	defer w.trackLock.Unlock()
+
+	w.started = false
+
+	w.updateTimer()
+}
+
 // Must be called locked
 func (w *Watchdog) updateTimer() {
-	timerMustBeActive := w.boundTrackCount < w.expectedTrackCount
+	timerMustBeActive := w.started && w.boundTrackCount < w.expectedTrackCount
 
 	if w.timer == nil && timerMustBeActive {
 		w.timer = time.AfterFunc(w.deadline, w.onFire)