Android BufferedImage Pixel Get getPixels(BufferedImage img, int x, int y, int w, int h, int[] pixels)

Description

get Pixels

License

Apache License

Declaration

public static int[] getPixels(BufferedImage img, int x, int y, int w,
            int h, int[] pixels) 

Method Source Code

//package com.java2s;
/*/*from w ww  .j  a va  2  s  .c  o m*/
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.awt.image.BufferedImage;
import java.awt.image.Raster;

public class Main {
    public static int[] getPixels(BufferedImage img, int x, int y, int w,
            int h, int[] pixels) {
        if (w == 0 || h == 0) {
            return new int[0];
        }

        if (pixels == null) {
            pixels = new int[w * h];
        } else if (pixels.length < w * h) {
            throw new IllegalArgumentException(
                    "Pixels array must have a length >= w * h");
        }

        int imageType = img.getType();
        if (imageType == BufferedImage.TYPE_INT_ARGB
                || imageType == BufferedImage.TYPE_INT_RGB) {
            Raster raster = img.getRaster();
            return (int[]) raster.getDataElements(x, y, w, h, pixels);
        }

        // Unmanages the image
        return img.getRGB(x, y, w, h, pixels, 0, w);
    }
}