Create byte[] from microedition Image - Java 2D Graphics

Java examples for 2D Graphics:BufferedImage Create

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Description

Create byte[] from microedition Image

Demo Code

/*//from www .ja v  a2  s  .  com
 * com/bensmann/mobile/jsr135/image/ImageHelper.java
 *
 * ImageHelper.java created on 4. Februar 2007, 00:07 by rb
 *
 * Copyright (C) 2006-2007 Ralf Bensmann, java@bensmann.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA
 *
 */
import javax.microedition.lcdui.Image;

public class Main{
    /**
     * Create byte[] from Image
     *
     * @param image
     * @return
     */
    public static byte[] getByteArray(Image image) {

        int raw[] = new int[image.getWidth() * image.getHeight()];
        image.getRGB(raw, 0, image.getWidth(), 0, 0, image.getWidth(),
                image.getHeight());
        byte rawByte[] = new byte[image.getWidth() * image.getHeight() * 4];
        int n = 0;

        int ARGB = 0;
        int a = 0;
        int r = 0;
        int g = 0;
        int b = 0;

        for (int i = 0; i < raw.length; i++) {

            ARGB = raw[i];

            a = (ARGB & 0xff000000) >> 24;
            r = (ARGB & 0xff0000) >> 16;
            g = (ARGB & 0xff00) >> 8;
            b = ARGB & 0xff;

            rawByte[n] = (byte) b;
            rawByte[n + 1] = (byte) g;
            rawByte[n + 2] = (byte) r;
            rawByte[n + 3] = (byte) a;

            n += 4;

        }

        raw = null;

        return rawByte;

    }
}

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