Convert byte array of data type TYPE_4BYTE_ABGR to BufferedImage

Question

I have a byte array with type TYPE_4BYTE_ABGR, and I know its width and height, I want to change it to BufferedImage, any ideas?

Answer 1

Might not be very efficient, but a BufferedImage can be converted to another type this way:

public static BufferedImage convertToType(BufferedImage image, int type) {
    BufferedImage newImage = new BufferedImage(image.getWidth(), image.getHeight(), type);
    Graphics2D graphics = newImage.createGraphics();
    graphics.drawImage(image, 0, 0, null);
    graphics.dispose();
    return newImage;
}

About the method you want to be implemented, you would have to know the width or height of the image to convert a byte[] to a BufferedImage.

Edit:
One way is converting the byte[] to int[] (data type TYPE_INT_ARGB) and using setRGB:

int[] dst = new int[width * height];
for (int i = 0, j = 0; i < dst.length; i++) {
    int a = src[j++] & 0xff;
    int b = src[j++] & 0xff;
    int g = src[j++] & 0xff;
    int r = src[j++] & 0xff;
    dst[i] = (a << 24) | (r << 16) | (g << 8) | b;
}
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
image.setRGB(0, 0, width, height, dst, 0, width);