String maskRef = null;
if (mask != null) {
BitmapImage fopimg = new BitmapImage
("TempImageMask:" + pctx.toString(), devW, devH, mask, null);
fopimg.setColorSpace(new PDFDeviceColorSpace(PDFDeviceColorSpace.DEVICE_GRAY));
PDFImageXObject xobj = pdfDoc.addImage(resourceContext, fopimg);
maskRef = xobj.referencePDF();
if (outputStream != null) {
try {
this.pdfDoc.output(outputStream);
} catch (IOException ioe) {