32 virtual ~Changeable();
34 bool addElement(GstElement* element, GstElement* firstElement, GstElement* secondElement);
36 bool removeElement(GstElement* element, GstElement* firstElement, GstElement* secondElement);
38 bool replaceSink(GstElement* oldSink, GstElement* newSink, GstElement* elementBefore, GstElement* bin);