1 /*
   2  * Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4450894
  27  * @summary Tests if the JPEG writer properly encodes IndexColorModel images
  28  *          that contain less than 8-bit indices (such as TYPE_BYTE_BINARY)
  29  */
  30 
  31 import java.awt.Color;
  32 import java.awt.Graphics;
  33 import java.awt.image.BufferedImage;
  34 import java.io.ByteArrayInputStream;
  35 import java.io.ByteArrayOutputStream;
  36 import java.io.IOException;
  37 
  38 import javax.imageio.ImageIO;
  39 
  40 public class ByteBinaryTest {
  41 
  42     private static final int[] expectedVals =
  43         { 0xffffffff, 0xff000000, 0xffffffff };
  44 
  45     public static void main(String[] args) {
  46         BufferedImage bi = new BufferedImage(100, 100,
  47                                              BufferedImage.TYPE_BYTE_BINARY);
  48 
  49         Graphics g = bi.createGraphics();
  50         g.setColor(Color.white);
  51         g.fillRect(0, 0, 100, 100);
  52         g.setColor(Color.black);
  53         g.fillRect(20, 20, 40, 40);
  54         g.setColor(Color.white);
  55         g.fillRect(25, 25, 25, 25);
  56         g.dispose();
  57 
  58         ByteArrayOutputStream baos = new ByteArrayOutputStream();
  59         boolean success;
  60 
  61         try {
  62             success = ImageIO.write(bi, "jpeg", baos);
  63         } catch (IOException ioe) {
  64             throw new RuntimeException("Could not write JPEG to stream");
  65         }
  66 
  67         if (!success) {
  68             throw new RuntimeException("Could not find valid JPEG writer...");
  69         }
  70 
  71         byte[] bytearr = baos.toByteArray();
  72         ByteArrayInputStream bais = new ByteArrayInputStream(bytearr);
  73         BufferedImage bi2 = null;
  74 
  75         try {
  76             bi2 = ImageIO.read(bais);
  77         } catch (IOException ioe) {
  78             throw new RuntimeException("Could not read JPEG stream");
  79         }
  80 
  81         int[] actualVals = new int[3];
  82 
  83         actualVals[0] = bi2.getRGB(27, 5);
  84         actualVals[1] = bi2.getRGB(27, 22);
  85         actualVals[2] = bi2.getRGB(35, 35);
  86 
  87         for (int i = 0; i < actualVals.length; i++) {
  88             if (actualVals[i] != expectedVals[i]) {
  89                 throw new RuntimeException("Pixel mismatch at index: " + i);
  90             }
  91         }
  92     }
  93 }