public static BufferedImage convertImageData(ImageData data) {
BufferedImage bimg = null;
int height = data.getHeight(), width = data.getWidth();
Object pixels = data.getData();
if (pixels instanceof int[] && data.getElementWidth() == 1) {
int[] arr = (int[]) pixels;
byte[] barray = new byte[arr.length * 3];
int k = 0;
for (int j = 0; j < arr.length; j++) {
int l = arr[j];
barray[k++] = (byte) (l & 0xFF);
barray[k++] = (byte) ((l >>> 8) & 0xFF);
barray[k++] = (byte) ((l >>> 16) & 0xFF);
}
ColorModel ccm =
new ComponentColorModel(
ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB),
new int[] {8, 8, 8},
false,
false,
Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
DataBuffer bbuf = new DataBufferByte(barray, barray.length);
SampleModel bmodel =
new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0});
WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0));
bimg = new BufferedImage(ccm, raster, false, new Hashtable());
} else if (pixels instanceof byte[]
&& data.getElementWidth() == 1) { // Assume gray scale model?
byte[] arr = (byte[]) pixels;
byte[] barray = new byte[arr.length * 3];
int k = 0;
for (int j = 0; j < arr.length; j++) {
byte l = arr[j];
barray[k++] = l;
barray[k++] = l;
barray[k++] = l;
}
ColorModel ccm =
new ComponentColorModel(
ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB),
new int[] {8, 8, 8},
false,
false,
Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
DataBuffer bbuf = new DataBufferByte(barray, barray.length);
SampleModel bmodel =
new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0});
WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0));
bimg = new BufferedImage(ccm, raster, false, new Hashtable());
} else {
throw new RuntimeException("Unexpected data.");
}
return bimg;
}
/** Convert standard img to a buffered image. */
public static BufferedImage convertImage(Image img) {
int height = img.getHeight(null), width = img.getWidth(null);
// FloatMatrix fm = new FloatMatrix( height, width ) ;
PixelGrabber grabber = new PixelGrabber(img, 0, 0, width, height, false);
try {
grabber.grabPixels();
} catch (InterruptedException e) {
System.out.println(e);
}
Object pixels = grabber.getPixels();
ColorModel cm = grabber.getColorModel();
BufferedImage bimg = null;
// REVISIT Makes some unwarranted assumptions about the layout of the PixelGrabber data
// as being either int (ARGB?) or byte (gray scale?)
if (pixels instanceof int[]) {
int[] arr = (int[]) pixels;
byte[] barray = new byte[arr.length * 3];
int k = 0;
for (int j = 0; j < arr.length; j++) {
int l = arr[j];
barray[k++] = (byte) (l & 0xFF);
barray[k++] = (byte) ((l >>> 8) & 0xFF);
barray[k++] = (byte) ((l >>> 16) & 0xFF);
}
ColorModel ccm =
new ComponentColorModel(
ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB),
new int[] {8, 8, 8},
false,
false,
Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
DataBuffer bbuf = new DataBufferByte(barray, barray.length);
SampleModel bmodel =
new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0});
WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0));
bimg = new BufferedImage(ccm, raster, false, new Hashtable());
} else if (pixels instanceof byte[]) { // Assume gray scale model?
byte[] arr = (byte[]) pixels;
byte[] barray = new byte[arr.length * 3];
int k = 0;
for (int j = 0; j < arr.length; j++) {
byte l = arr[j];
barray[k++] = l;
barray[k++] = l;
barray[k++] = l;
}
ColorModel ccm =
new ComponentColorModel(
ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB),
new int[] {8, 8, 8},
false,
false,
Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
DataBuffer bbuf = new DataBufferByte(barray, barray.length);
SampleModel bmodel =
new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0});
WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0));
bimg = new BufferedImage(ccm, raster, false, new Hashtable());
} else {
throw new RuntimeException("Unexpected data.");
}
return bimg;
}
public BufferedImage read(int imageIndex, ImageReadParam param) throws IOException {
checkIndex(imageIndex);
readHeader();
if (iis == null) throw new IllegalStateException("input is null");
BufferedImage img;
clearAbortRequest();
processImageStarted(imageIndex);
if (param == null) param = getDefaultReadParam();
sourceRegion = new Rectangle(0, 0, 0, 0);
destinationRegion = new Rectangle(0, 0, 0, 0);
computeRegions(
param, this.width, this.height, param.getDestination(), sourceRegion, destinationRegion);
scaleX = param.getSourceXSubsampling();
scaleY = param.getSourceYSubsampling();
// If the destination band is set used it
sourceBands = param.getSourceBands();
destBands = param.getDestinationBands();
seleBand = (sourceBands != null) && (destBands != null);
noTransform = destinationRegion.equals(new Rectangle(0, 0, width, height)) || seleBand;
if (!seleBand) {
sourceBands = new int[colorPlanes];
destBands = new int[colorPlanes];
for (int i = 0; i < colorPlanes; i++) destBands[i] = sourceBands[i] = i;
}
// If the destination is provided, then use it. Otherwise, create new one
bi = param.getDestination();
// Get the image data.
WritableRaster raster = null;
if (bi == null) {
if (sampleModel != null && colorModel != null) {
sampleModel =
sampleModel.createCompatibleSampleModel(
destinationRegion.width + destinationRegion.x,
destinationRegion.height + destinationRegion.y);
if (seleBand) sampleModel = sampleModel.createSubsetSampleModel(sourceBands);
raster = Raster.createWritableRaster(sampleModel, new Point(0, 0));
bi = new BufferedImage(colorModel, raster, false, null);
}
} else {
raster = bi.getWritableTile(0, 0);
sampleModel = bi.getSampleModel();
colorModel = bi.getColorModel();
noTransform &= destinationRegion.equals(raster.getBounds());
}
byte bdata[] = null; // buffer for byte data
if (sampleModel.getDataType() == DataBuffer.TYPE_BYTE)
bdata = (byte[]) ((DataBufferByte) raster.getDataBuffer()).getData();
readImage(bdata);
if (abortRequested()) processReadAborted();
else processImageComplete();
return bi;
}
