fer_datastream">LibRaw_buffer_datastream</a>
        object, created from <strong>buf</strong>.<br>
        This method is needed for Sony encrypted metadata parser.
        <p>This call implemented in base class (<strong>LibRaw_abstract_datastream</strong>),
          there is no need to reimplement in in derived classes.<br>
          Possible activity of temporary datastream requires very accurate
          programming when implementing datastreams derived from base <strong>LibRaw_abstract_datastream</st