| /* |
| * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4415068 4622201 |
| * @summary Tests if the JPEG writer responds to the compression quality setting |
| */ |
| |
| import java.awt.Color; |
| import java.awt.Graphics; |
| import java.awt.image.BufferedImage; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Iterator; |
| import java.util.Random; |
| |
| import javax.imageio.IIOImage; |
| import javax.imageio.ImageIO; |
| import javax.imageio.ImageTypeSpecifier; |
| import javax.imageio.ImageWriteParam; |
| import javax.imageio.ImageWriter; |
| import javax.imageio.stream.ImageOutputStream; |
| |
| public class CompressionBug { |
| |
| public CompressionBug() throws IOException { |
| File fileHighComp = File.createTempFile("CompressionHigh", ".jpg"); |
| File fileLowComp = File.createTempFile("CompressionLow", ".jpg"); |
| |
| fileHighComp.deleteOnExit(); |
| fileLowComp.deleteOnExit(); |
| |
| ImageOutputStream iosHighComp = |
| ImageIO.createImageOutputStream(fileHighComp); |
| ImageOutputStream iosLowComp = |
| ImageIO.createImageOutputStream(fileLowComp); |
| |
| int width = 100; |
| int height = 100; |
| BufferedImage bi = |
| new BufferedImage(width, height, |
| BufferedImage.TYPE_INT_RGB); |
| Graphics g = bi.createGraphics(); |
| Random r = new Random(); |
| for (int i = 0; i < 100; i++) { |
| Color c = new Color(r.nextInt(256), |
| r.nextInt(256), |
| r.nextInt(256)); |
| int x = r.nextInt(width); |
| int y = r.nextInt(height); |
| int w = r.nextInt(width - x); |
| int h = r.nextInt(height - y); |
| g.setColor(c); |
| g.fillRect(x, y, w, h); |
| } |
| |
| ImageTypeSpecifier typeSpecifier = |
| new ImageTypeSpecifier(bi.getColorModel(), |
| bi.getSampleModel()); |
| |
| ImageWriter writer = null; |
| Iterator iter = ImageIO.getImageWriters(typeSpecifier,"jpeg"); |
| while (iter.hasNext()) { |
| writer = (ImageWriter)iter.next(); |
| break; |
| } |
| |
| IIOImage iioImg = new IIOImage(bi, null, null); |
| ImageWriteParam wParam = writer.getDefaultWriteParam(); |
| wParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT); |
| |
| // write the highly compressed image (a compression quality setting of |
| // 0.1f means low visual quality and small file size) |
| wParam.setCompressionQuality(0.1f); |
| writer.setOutput(iosHighComp); |
| writer.write(null, iioImg, wParam); |
| |
| // write the somewhat compressed image (a compression quality setting |
| // of 0.9f means high visual quality and large file size) |
| wParam.setCompressionQuality(0.9f); |
| writer.setOutput(iosLowComp); |
| writer.write(null, iioImg, wParam); |
| |
| long sizeOfFileLowComp = fileLowComp.length(); |
| long sizeOfFileHighComp = fileHighComp.length(); |
| |
| // the highly compressed image file should have a smaller file size |
| // than the image file with low compression; throw an exception if |
| // this isn't the case |
| if (sizeOfFileLowComp < sizeOfFileHighComp) { |
| throw new RuntimeException("Lower compression quality did not " + |
| "reduce file size!"); |
| } |
| } |
| |
| public static void main(String args[]) throws IOException { |
| new CompressionBug(); |
| } |
| } |