cannot use c.gstLog (value of type func(level gst.DebugLevel, file string, function string, line int, _ *glib.Object, message string)) as func(category *gst.DebugCategory, level gst.DebugLevel, file string, function string, line int, object *gst.LoggedObject, message *gst.DebugMessage) value in argument to gst.SetLogFunction