for file output in any formats,
      LibRaw includes calls that emulate the file output provided by dcraw. This
      is done primarily for easier verification of library work: the resultant
      files must be binary identical.</p>
    <p><a name="dcraw_ppm_tiff_writer"></a></p>
    <h3>int LibRaw::dcraw_ppm_tiff_writer(const char *outfile)</h3>
    <p>The function outputs the postprocessing results to a file in the PPM/PGM
      or TIFF format (the format is set via imgdata.params.output_tiff). The
     