GObject
  GstObject
    GstPad
    GstPluginFeature
      GstElementFactory
      GstTypeFindFactory
      GstIndexFactory
    GstElement
      GstBin
        GstPipeline
      GstQueue
      GstBaseSink
        GstVideoSink
          GstDfbVideoSink
      GstTRM
      GstWavpackDec
      GstWavpackEnc
      GstWavpackParse
    GstPlugin
    GstRegistry
    GstPadTemplate
  GstSignalObject
GInterface
  GstChildProxy