/* * @(#)JPEGFlip.java	1.25 04/07/26 *  * Copyright (c) 2004 Sun Microsystems, Inc. All Rights Reserved. *  * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: *  * -Redistribution of source code must retain the above copyright notice, this *  list of conditions and the following disclaimer. *  * -Redistribution in binary form must reproduce the above copyright notice,  *  this list of conditions and the following disclaimer in the documentation *  and/or other materials provided with the distribution. *  * Neither the name of Sun Microsystems, Inc. or the names of contributors may  * be used to endorse or promote products derived from this software without  * specific prior written permission. *  * This software is provided "AS IS," without a warranty of any kind. ALL  * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST  * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,  * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY  * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,  * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. *  * You acknowledge that this software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of any * nuclear facility. *//* * @(#)JPEGFlip.java	1.25 04/07/26 */package java2d.demos.Images;import java.awt.*;import com.sun.image.codec.jpeg.*;import java.awt.image.BufferedImage;import java.awt.image.DataBuffer;import java.awt.geom.GeneralPath;import java.io.*;import java2d.Surface;/** * Render a filled star & duke into a BufferedImage, save the BufferedImage * as a JPEG, display the BufferedImage, using the decoded JPEG BufferedImage * DataBuffer flip the elements, display the JPEG flipped BufferedImage. */public class JPEGFlip extends Surface {    private static Image img;    public JPEGFlip() {        setBackground(Color.white);        img = getImage("duke.gif");    }    public void render(int w, int h, Graphics2D g2) {        int hh = h/2;        BufferedImage bi = new BufferedImage(w, hh, BufferedImage.TYPE_INT_RGB);        Graphics2D big = bi.createGraphics();        // .. use rendering hints from J2DCanvas ..        big.setRenderingHints(g2.getRenderingHints());        big.setBackground(getBackground());        big.clearRect(0, 0, w, hh);        big.setColor(Color.green.darker());        GeneralPath p = new GeneralPath(GeneralPath.WIND_NON_ZERO);        p.moveTo(- w / 2.0f, - hh / 8.0f);        p.lineTo(+ w / 2.0f, - hh / 8.0f);        p.lineTo(- w / 4.0f, + hh / 2.0f);        p.lineTo(+     0.0f, - hh / 2.0f);        p.lineTo(+ w / 4.0f, + hh / 2.0f);        p.closePath();        big.translate(w/2, hh/2);        big.fill(p);        int iw = img.getWidth(this);        int ih = img.getHeight(this);        if (hh < ih * 1.5)            ih = (int) (ih * ((hh / (ih*1.5))));        big.drawImage(img, -img.getWidth(this)/2, -ih/2, iw, ih, this);        g2.drawImage(bi, 0, 0, this);        g2.setFont(new Font("Dialog", Font.PLAIN, 10));        g2.setColor(Color.black);        g2.drawString("BufferedImage", 4, 12);        BufferedImage bi1 = null;        try {            // To write the jpeg to a file uncomment the File* lines and            // comment out the ByteArray*Stream lines.            //File file = new File("images", "test.jpg");            //FileOutputStream out = new FileOutputStream(file);            ByteArrayOutputStream out = new ByteArrayOutputStream();            JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);            JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);            param.setQuality(1.0f, false);            encoder.setJPEGEncodeParam(param);            encoder.encode(bi);            //FileInputStream in = new FileInputStream(file);            ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());            JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(in);            bi1 = decoder.decodeAsBufferedImage();        } catch (Exception ex) {            g2.setColor(Color.red);            g2.drawString("write permissions on images/test.jpg?", 5, hh*2-5);            return;        }        if (bi1 == null) {            g2.setColor(Color.red);            g2.drawString("decodeAsBufferedImage=null", 5, hh*2-5);            return;        }        BufferedImage bi2 = new BufferedImage(bi1.getWidth(),bi1.getHeight(),bi1.getType());        DataBuffer db1 = bi1.getRaster().getDataBuffer();        DataBuffer db2 = bi2.getRaster().getDataBuffer();        for (int i = db1.getSize()-1, j = 0; i >= 0; --i, j++) {            db2.setElem(j, db1.getElem(i));        }        g2.drawImage(bi2, 0, hh, this);        g2.drawString("JPEGImage Flipped", 4, hh*2-4);        g2.drawLine(0, hh, w, hh);    }    public static void main(String s[]) {        createDemoFrame(new JPEGFlip());    }}