/**
* Reads image meta data.
*
* @param oimage
* @return
*/
public static Map<String, String> readImageData(IIOImage oimage) {
Map<String, String> dict = new HashMap<String, String>();
IIOMetadata imageMetadata = oimage.getMetadata();
if (imageMetadata != null) {
IIOMetadataNode dimNode = (IIOMetadataNode) imageMetadata.getAsTree("javax_imageio_1.0");
NodeList nodes = dimNode.getElementsByTagName("HorizontalPixelSize");
int dpiX;
if (nodes.getLength() > 0) {
float dpcWidth = Float.parseFloat(nodes.item(0).getAttributes().item(0).getNodeValue());
dpiX = (int) Math.round(25.4f / dpcWidth);
} else {
dpiX = Toolkit.getDefaultToolkit().getScreenResolution();
}
dict.put("dpiX", String.valueOf(dpiX));
nodes = dimNode.getElementsByTagName("VerticalPixelSize");
int dpiY;
if (nodes.getLength() > 0) {
float dpcHeight = Float.parseFloat(nodes.item(0).getAttributes().item(0).getNodeValue());
dpiY = (int) Math.round(25.4f / dpcHeight);
} else {
dpiY = Toolkit.getDefaultToolkit().getScreenResolution();
}
dict.put("dpiY", String.valueOf(dpiY));
}
return dict;
}
/**
* Gets pixel data of an <code>IIOImage</code> object.
*
* @param image an <code>IIOImage</code> object
* @return a byte buffer of pixel data
* @throws Exception
*/
public static ByteBuffer getImageByteBuffer(IIOImage image) throws IOException {
// Set up the writeParam
TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US);
tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED);
// Get tif writer and set output to file
Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(TIFF_FORMAT);
ImageWriter writer = writers.next();
if (writer == null) {
throw new RuntimeException(
"Need to install JAI Image I/O package.\nhttps://jai-imageio.dev.java.net");
}
// Get the stream metadata
IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
ImageOutputStream ios = ImageIO.createImageOutputStream(outputStream);
writer.setOutput(ios);
writer.write(
streamMetadata, new IIOImage(image.getRenderedImage(), null, null), tiffWriteParam);
// writer.write(image.getRenderedImage());
writer.dispose();
// ImageIO.write(image.getRenderedImage(), "tiff", ios); // this can be used in lieu of
// writer
ios.seek(0);
BufferedImage bi = ImageIO.read(ios);
return convertImageData(bi);
}
public static List<File> createTiffFiles(List<IIOImage> imageList, int index, int dpiX, int dpiY)
throws IOException {
List<File> tiffFiles = new ArrayList<File>();
// Set up the writeParam
TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US);
tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED);
// Get tif writer and set output to file
Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(TIFF_FORMAT);
ImageWriter writer = writers.next();
if (writer == null) {
throw new RuntimeException(
"Need to install JAI Image I/O package.\nhttps://jai-imageio.dev.java.net");
}
// Get the stream metadata
IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam);
// all if index == -1; otherwise, only index-th
for (IIOImage oimage : (index == -1 ? imageList : imageList.subList(index, index + 1))) {
if (dpiX != 0 && dpiY != 0) {
// Get the default image metadata.
ImageTypeSpecifier imageType =
ImageTypeSpecifier.createFromRenderedImage(oimage.getRenderedImage());
IIOMetadata imageMetadata = writer.getDefaultImageMetadata(imageType, null);
imageMetadata = setDPIViaAPI(imageMetadata, dpiX, dpiY);
oimage.setMetadata(imageMetadata);
}
File tiffFile = File.createTempFile(OUTPUT_FILE_NAME, TIFF_EXT);
ImageOutputStream ios = ImageIO.createImageOutputStream(tiffFile);
writer.setOutput(ios);
writer.write(streamMetadata, oimage, tiffWriteParam);
ios.close();
tiffFiles.add(tiffFile);
}
writer.dispose();
return tiffFiles;
}
public void writeToSequence(IIOImage img, ImageWriteParam param) throws IOException {
ImageOutputStream out = (ImageOutputStream) getOutput();
if (!(img.getRenderedImage() instanceof BufferedImage)) {
throw new IOException(
getClass().getName() + "writeToSequence:\n\tCan only write BufferedImage objects");
}
BufferedImage image = (BufferedImage) img.getRenderedImage();
/*
// Attempt to convert metadata, if present
IIOMetadata imd = img.getMetadata();
TIFFMetadata metadata = null;
if(imd!=null){
ImageTypeSpecifier type=ImageTypeSpecifier.createFromRenderedImage(image);
metadata=(TIFFMetadata)convertImageMetadata(imd,type,null);
}
// Output metadata if present
if(metadata != null){
Iterator keywordIter = metadata.keywords.iterator();
Iterator valueIter = metadata.values.iterator();
while(keywordIter.hasNext()){
String keyword = (String)keywordIter.next();
String value = (String)valueIter.next();
System.out.println("9\bKEYWORD: "+keyword);
System.out.println("9\bVALUE: "+value);
}
}
*/
IFD ifd;
int pmi = RGB, comp = compNone, tiffComp = NOCOMPRESSION;
TIFFImageWriteParam p = null;
if ((param != null) && (param instanceof TIFFImageWriteParam)) {
p = (TIFFImageWriteParam) param;
pmi = p.getPhotometricInterpretation();
if (p.getCompressionType().equals("none")) {
comp = compNone;
tiffComp = NOCOMPRESSION;
} else if (p.getCompressionType().equals("mh")) {
comp = compBaselineMH;
tiffComp = CCITTGROUP3MODHUFFMAN;
} else if (p.getCompressionType().equals("t4mh")) {
comp = compT4MH;
tiffComp = CCITTFAXT4;
} else if (p.getCompressionType().equals("t4mr")) {
comp = compT4MR;
tiffComp = CCITTFAXT4;
} else if (p.getCompressionType().equals("t6mmr")) {
comp = compT6MMR;
tiffComp = CCITTFAXT6;
} else if (p.getCompressionType().equals("packbits")) {
comp = compPackBits;
tiffComp = PACKBITS;
} else if (p.getCompressionType().equals("lzw")) {
comp = compLZW;
tiffComp = LZW;
} else if (p.getCompressionType().equals("jpeg")) {
comp = compJPEG;
tiffComp = JPEG;
}
// System.out.println("comp = "+p.getCompressionType()+" "+comp);
}
switch (pmi) {
case WhiteIsZero:
switch (comp) {
case compBaselineMH:
ifd = writeBModHufImage(out, image, p);
break;
case compT4MH:
case compT4MR:
case compT6MMR:
ifd = TIFFClassFFactory.writeImage(out, image, comp, p);
break;
default:
ifd = writeRGBImage(out, image, NOCOMPRESSION, p);
break; // write image data as uncompressed rgb data.
}
break;
case BlackIsZero:
switch (comp) {
default:
ifd = writeGrayImage(out, image, tiffComp, p);
break;
}
break;
case RGB: // write image data as uncompressed rgb data.
switch (comp) {
default:
ifd = writeRGBImage(out, image, tiffComp, p);
break;
}
break;
case CMYK:
switch (comp) {
default:
ifd = writeCMYKImage(out, image, p);
break;
}
break;
case YCbCr:
switch (comp) {
default:
ifd = writeYCbCrImage(out, image, tiffComp, p);
break;
}
break;
default:
ifd = writeRGBImage(out, image, NOCOMPRESSION, p);
break; // write image data as uncompressed rgb data.
}
ifdptr = ifd.write(out, ifdptr); // write ifd contents, entries and set ifd linked list pointer
}
