/**
* 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);
}
/**
* Gets pixel data of an <code>IIOImage</code> object.
*
* @param oimage an <code>IIOImage</code> object
* @return a byte buffer of pixel data
* @throws Exception
*/
public static ByteBuffer getImageByteBuffer(BufferedImage oimage) throws IOException {
// Get tif writer and set output to file
ImageWriter writer = new TIFFImageWriterSpi().createWriterInstance();
// Set up the writeParam
// We are using the old JAI ImageIO plugin, because for some reason, OCR don't work with
// TwelveMonkeys' plugin
ImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US);
tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED);
// 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(oimage, null, null), tiffWriteParam);
writer.dispose();
// Read the writed image
ios.seek(0);
ImageReader reader = new TIFFImageReaderSpi().createReaderInstance();
ImageReadParam param = reader.getDefaultReadParam();
reader.setInput(ios, true, true);
BufferedImage bi;
try {
bi = reader.read(0, param);
} finally {
reader.dispose();
ios.close();
}
return convertImageData(bi);
}
/**
* Creates a list of TIFF image files from an image file. It basically converts images of other
* formats to TIFF format, or a multi-page TIFF image to multiple TIFF image files.
*
* @param imageFile input image file
* @param index an index of the page; -1 means all pages, as in a multi-page TIFF image
* @return a list of TIFF image files
* @throws Exception
*/
public static List<File> createTiffFiles(File imageFile, int index) throws IOException {
List<File> tiffFiles = new ArrayList<File>();
String imageFileName = imageFile.getName();
String imageFormat = imageFileName.substring(imageFileName.lastIndexOf('.') + 1);
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName(imageFormat);
ImageReader reader = readers.next();
if (reader == null) {
throw new RuntimeException(
"Need to install JAI Image I/O package.\nhttps://jai-imageio.dev.java.net");
}
ImageInputStream iis = ImageIO.createImageInputStream(imageFile);
reader.setInput(iis);
// Read the stream metadata
// IIOMetadata streamMetadata = reader.getStreamMetadata();
// 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();
// Read the stream metadata
IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam);
int imageTotal = reader.getNumImages(true);
for (int i = 0; i < imageTotal; i++) {
// all if index == -1; otherwise, only index-th
if (index == -1 || i == index) {
// BufferedImage bi = reader.read(i);
// IIOImage oimage = new IIOImage(bi, null, reader.getImageMetadata(i));
IIOImage oimage = reader.readAll(i, reader.getDefaultReadParam());
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();
reader.dispose();
return tiffFiles;
}
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;
}
/**
* Merges multiple images into one TIFF image.
*
* @param inputImages an array of image files
* @param outputTiff the output TIFF file
* @throws Exception
*/
public static void mergeTiff(File[] inputImages, File outputTiff) throws IOException {
List<IIOImage> imageList = new ArrayList<IIOImage>();
for (int i = 0; i < inputImages.length; i++) {
imageList.addAll(getIIOImageList(inputImages[i]));
}
if (imageList.isEmpty()) {
// if no image
return;
}
Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(TIFF_FORMAT);
ImageWriter writer = writers.next();
// Set up the writeParam
TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US);
tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED);
// Get the stream metadata
IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam);
ImageOutputStream ios = ImageIO.createImageOutputStream(outputTiff);
writer.setOutput(ios);
IIOImage firstIioImage = imageList.remove(0);
writer.write(streamMetadata, firstIioImage, tiffWriteParam);
int i = 1;
for (IIOImage iioImage : imageList) {
writer.writeInsert(i++, iioImage, tiffWriteParam);
}
ios.close();
writer.dispose();
}
/**
* Encodes a BufferedImage using JAI in <code>format</code> format and sends it to <code>outStream
* </code>.
*
* @param format the MIME type of the output image in which to encode <code>image</code> through
* JAI
* @param image the actual image to be encoded in <code>format</code> format.
* @param outStream the encoded image destination.
* @throws IOException if the image writing to <code>outStream</code> fails.
* @throws IllegalArgumentException if <code>format</code> is not a supported output format for
* the installed JAI library.
*/
public static void encode(String format, BufferedImage image, OutputStream outStream)
throws IOException {
if (format.equalsIgnoreCase("jpeg")) {
format = "image/jpeg";
}
Iterator it = ImageIO.getImageWritersByMIMEType(format);
if (!it.hasNext()) {
throw new IllegalArgumentException("Format not supported: " + format);
}
ImageWriter writer = (ImageWriter) it.next();
ImageOutputStream ioutstream = null;
IIOMetadata meta = writer.getDefaultStreamMetadata(writer.getDefaultWriteParam());
ImageWriteParam param = writer.getDefaultWriteParam();
// DJB: jpeg does not support ARGB (alpha) colour
// this converts the image from ARGB to RGB
// TODO: make this more abstract - it should be smarter for more image
// writer types (Ie. ask the writer what it supports)
// Alternately, make a jpeg writer and png writer, as these are
// mostly what we get from jai!
if (format.equalsIgnoreCase("image/jpeg")) {
param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
param.setCompressionQuality(
0.9f); // DJB: only do this for jpegs - png freaks when you do this!
meta = writer.getDefaultStreamMetadata(param);
// WritableRaster raster = image.getRaster();
// WritableRaster newRaster = raster.createWritableChild(0, 0, image.getWidth(),
// image.getHeight(), 0, 0, new int[] {0, 1, 2});
// create a ColorModel that represents the one of the ARGB except the alpha
// channel:
// DirectColorModel cm = (DirectColorModel)image.getColorModel();
// DirectColorModel newCM = new DirectColorModel(cm.getPixelSize(), cm.getRedMask(),
// cm.getGreenMask(), cm.getBlueMask());
// now create the new buffer that is used ot write the image:
// BufferedImage rgbBuffer = new BufferedImage(newCM, newRaster, false, null);
BufferedImage curImage =
new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_3BYTE_BGR);
Graphics2D g = (Graphics2D) curImage.createGraphics();
g.drawImage(image, 0, 0, null);
image = curImage;
ioutstream = ImageIOExt.createImageOutputStream(image, outStream);
writer.setOutput(ioutstream);
writer.write(image);
ioutstream.close();
writer.dispose();
return;
}
ioutstream = ImageIOExt.createImageOutputStream(image, outStream);
writer.setOutput(ioutstream);
writer.write(meta, new IIOImage(image, null, meta), param);
ioutstream.close();
writer.dispose();
}