internal int oldScanlineSize()
{
int scanline = multiply(m_dir.td_bitspersample, m_dir.td_imagewidth, "TIFFScanlineSize");
if (m_dir.td_planarconfig == PlanarConfig.CONTIG)
scanline = multiply(scanline, m_dir.td_samplesperpixel, "TIFFScanlineSize");
return howMany8(scanline);
}