@Test
public void lossless() throws Exception {
File f = File.createTempFile("test-jpeg2000-lossless", ".jp2");
f.deleteOnExit();
Iterator<ImageWriter> writers = ImageIO.getImageWritersBySuffix("jp2");
assertTrue(writers.hasNext());
ImageWriter writer = writers.next();
J2KImageWriteParam writeParams = (J2KImageWriteParam) writer.getDefaultWriteParam();
writeParams.setLossless(true);
// writeParams.setFilter(J2KImageWriteParam.FILTER_53);
// writeParams.setEncodingRate(64.0f);
// writeParams.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
// writeParams.setCompressionType("JPEG2000");
// writeParams.setCompressionQuality(1.0f);
ImageOutputStream ios = ImageIO.createImageOutputStream(f);
writer.setOutput(ios);
writer.write(null, new IIOImage(image, null, null), writeParams);
writer.dispose();
ios.close();
assertTrue("Expected file size > 128kB", f.length() > 128 * 1024);
// System.out.println(f.length());
BufferedImage read = ImageIO.read(f);
assertEquals(SIZE, read.getWidth());
}
/** Constructor to set locales. */
public J2KImageWriteParamJava(IIOImage image, ImageWriteParam param) {
super(param.getLocale());
if (image != null) {
if (image.hasRaster()) setDefaults(image.getRaster());
else setDefaults(image.getRenderedImage());
}
setSourceRegion(param.getSourceRegion());
setSourceBands(param.getSourceBands());
try {
setTiling(
param.getTileWidth(), param.getTileHeight(),
param.getTileGridXOffset(), param.getTileGridYOffset());
} catch (IllegalStateException e) {
// tileing is not set do nothing.
}
setDestinationOffset(param.getDestinationOffset());
setSourceSubsampling(
param.getSourceXSubsampling(),
param.getSourceYSubsampling(),
param.getSubsamplingXOffset(),
param.getSubsamplingYOffset());
setDestinationType(param.getDestinationType());
J2KImageWriteParam j2kParam;
if (param instanceof J2KImageWriteParam) {
j2kParam = (J2KImageWriteParam) param;
} else {
j2kParam = new J2KImageWriteParam();
}
setDecompositionLevel("" + j2kParam.getNumDecompositionLevels());
setEncodingRate(j2kParam.getEncodingRate());
setLossless(j2kParam.getLossless());
setFilters(j2kParam.getFilter());
setEPH("" + j2kParam.getEPH());
setSOP("" + j2kParam.getSOP());
setProgressionName(j2kParam.getProgressionType());
int[] size = j2kParam.getCodeBlockSize();
setCodeBlockSize("" + size[0] + " " + size[1]);
enableCT = j2kParam.getComponentTransformation();
setComponentTransformation("" + enableCT);
}