me</strong>.<br>
        Unfortunately, C++ constructor cannot return an error. So if bad
        filename passed (e.g. nonexistent file) object is created as non-valid
        (valid() call returns zero).</dd>
    </dl>
    <p>All other class methods are <a href="#datastream_methods">described
        above</a>.<br>
      This class implements all possible methods, including fname() and
      subfile_open().</p>
    <p><a name="bigfile_datastream"></a></p>
    <h4>class LibRaw_bigfile_datastream - file inp