DEFAULT_PROP_QOS  366 libs/gst/base/gstbasetransform.c           DEFAULT_PROP_QOS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
DEFAULT_PROP_QOS  427 libs/gst/base/gstbasetransform.c   trans->priv->qos_enabled = DEFAULT_PROP_QOS;