super.addExtendHeaderReader(MarkerConstants.APP0, new JFIFHeaderReader());
if (supportICC) {
super.addExtendHeaderReader(MarkerConstants.APP2, new ICCProfileReader());
}
super.addExtendHeaderReader(MarkerConstants.APP14, new AdobeHeaderReader());
if (fastIDCTMode) {
// temporary unsupported
inverseDCTCalculator = new FastInverseDCTCalculator();
} else {