TYPEMAP

GstClockTime		T_GUINT64
GstClockTimeDiff	T_GINT64

GstStructure *		T_GPERL_GENERIC_WRAPPER
const GstStructure *	T_GPERL_GENERIC_WRAPPER

GstClockID		T_GPERL_GENERIC_WRAPPER

GstIterator *		T_GPERL_GENERIC_WRAPPER