/**
* Method to change bands order only on the BufferedImage.
*
* @param bufferedImage
* @return new bufferedImage
*/
public Image invertRGB(BufferedImage bufferedImage, String bands) {
ColorModel colorModel = bufferedImage.getColorModel();
if (colorModel instanceof DirectColorModel) {
DirectColorModel directColorModel = (DirectColorModel) colorModel;
int red = directColorModel.getRedMask();
int blue = directColorModel.getBlueMask();
int green = directColorModel.getGreenMask();
int alpha = directColorModel.getAlphaMask();
int[] components = new int[3];
String bds = bands.toLowerCase();
components[0] = getComponent(bds.charAt(0), red, green, blue);
components[1] = getComponent(bds.charAt(1), red, green, blue);
components[2] = getComponent(bds.charAt(2), red, green, blue);
directColorModel =
new DirectColorModel(32, components[0], components[1], components[2], alpha);
ColorProcessor colorProcessor = new ColorProcessor(bufferedImage);
colorProcessor.setColorModel(directColorModel);
return colorProcessor.createImage();
}
return bufferedImage;
}
private void writeDirectColorModel(DataOutput out, DirectColorModel colorModel)
throws IOException {
out.writeInt(colorModel.getPixelSize());
out.writeInt(colorModel.getRedMask());
out.writeInt(colorModel.getGreenMask());
out.writeInt(colorModel.getBlueMask());
out.writeInt(colorModel.getAlphaMask());
}
public static boolean isFilterableDCM(ColorModel cm) {
if (cm instanceof DirectColorModel) {
DirectColorModel dcm = (DirectColorModel) cm;
return (isMaskOK(dcm.getAlphaMask(), true)
&& isMaskOK(dcm.getRedMask(), false)
&& isMaskOK(dcm.getGreenMask(), false)
&& isMaskOK(dcm.getBlueMask(), false));
}
return false;
}
private static boolean isBgrColorModel(ColorModel cm) {
if (cm instanceof DirectColorModel && cm.getTransferType() == DataBuffer.TYPE_INT) {
DirectColorModel directCM = (DirectColorModel) cm;
return directCM.getRedMask() == 0x000000FF
&& directCM.getGreenMask() == 0x0000FF00
&& directCM.getBlueMask() == 0x00FF0000
&& (directCM.getNumComponents() == 3 || directCM.getAlphaMask() == 0xFF000000);
}
return false;
}