ue data processing, all subsequent calls will
      return LIBRAW_OUT_OF_ORDER_CALL. Processing of a new file may be started
      in the usual way, by calling LibRaw::open_file().</p>
    <p><a name="dcrawemu"></a></p>
    <h2>Data Postprocessing: Emulation of dcraw Behavior</h2>
    <p>Instead of writing one's own Bayer pattern postprocessing, one can use
      the dcraw functions, which are called after the calls of open_file() +
      unpack() /+ unpack_thumb()/</p>
    <p><a name="dcraw_params"></a></p