acking is used </li>
            </ul>
          </li>
          <li>for 16-bit format:
            <ul>
              <li>1: Big-endian data </li>
            </ul>
          </li>
        </ul>
      </li>
      <li>bayer_pattern: one of LIBRAW_OPENBAYER_RGGB,LIBRAW_OPENBAYER_BGGR,
        LIBRAW_OPENBAYER_GRBG,LIBRAW_OPENBAYER_GBRG </li>
      <li>unused_bits: count of upper zero bits </li>
      <li>otherflags:
        <ul>
          <li>Bit 1 - filter (average neighbors) for pixels with values of zero
