disconnect all signals of a videowidget upon disconnect as to avoid signal...

disconnect all signals of a videowidget upon disconnect as to avoid signal connection duplication etc.

vlc/videowidget.cpp

@@ -80,6 +80,14 @@ void VideoWidget::connectToMediaObject(MediaObject *mediaObject)
     clearPendingAdjusts();
 }
 
+void VideoWidget::disconnectFromMediaObject(MediaObject *mediaObject)
+{
+    SinkNode::disconnectFromMediaObject(mediaObject);
+    // Undo all connections or path creation->destruction->creation can cause
+    // duplicated connections or getting singals from two different MediaObjects.
+    disconnect(mediaObject, 0, this, 0);
+}
+
 #ifndef PHONON_VLC_NO_EXPERIMENTAL
 void VideoWidget::connectToAvCapture(Experimental::AvCapture *avCapture)
 {

vlc/videowidget.h

@@ -73,6 +73,11 @@ public:
      */
     void connectToMediaObject(MediaObject *mediaObject);
 
+    /**
+     * Overloads SinkNode.
+     */
+    void disconnectFromMediaObject(MediaObject *mediaObject);
+
 #ifndef PHONON_VLC_NO_EXPERIMENTAL
     /**
      * Connects the VideoWidget to an AvCapture. connectToMediaObject() is called