1 /*
   2  * Copyright (c) 2005, 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 4339415
  27  * @summary Tests that GIF writer plugin writes image sequences correctly
  28  */
  29 
  30 import java.awt.Color;
  31 import java.awt.Graphics;
  32 import java.awt.image.BufferedImage;
  33 import java.awt.image.IndexColorModel;
  34 import java.io.File;
  35 import java.io.IOException;
  36 
  37 import javax.imageio.IIOImage;
  38 import javax.imageio.ImageIO;
  39 import javax.imageio.ImageReader;
  40 import javax.imageio.ImageTypeSpecifier;
  41 import javax.imageio.ImageWriteParam;
  42 import javax.imageio.ImageWriter;
  43 import javax.imageio.metadata.IIOMetadata;
  44 import javax.imageio.stream.ImageOutputStream;
  45 
  46 public class AnimationTest {
  47 
  48     BufferedImage img = null;
  49     int x, y;
  50     int w, h;
  51 
  52     protected static String fname = "animtest.gif";
  53 
  54     public AnimationTest() {
  55         w = h = 100;
  56     }
  57 
  58     private void initFrame() {
  59         if (img != null) {
  60             return;
  61         }
  62         byte r[] = new byte[256];
  63         byte g[] = new byte[256];
  64         byte b[] = new byte[256];
  65 
  66         for (int i = 0; i < 256; i++) {
  67             r[i] = g[i] = b[i] = (byte)0x00;
  68         }
  69         r[0] = (byte)0x00; g[0] = (byte)0x00; b[0] = (byte)0x00;
  70         r[1] = (byte)0xFF; g[1] = (byte)0xFF; b[1] = (byte)0xFF;
  71         r[2] = (byte)0xFF; g[3] = (byte)0xFF; b[4] = (byte)0xFF;
  72 
  73         IndexColorModel icm = new IndexColorModel(8, 256,
  74                                                   r, g, b);
  75 
  76         img = new BufferedImage(w, h,
  77                                 BufferedImage.TYPE_BYTE_INDEXED,
  78                                 icm);
  79     }
  80 
  81     private BufferedImage createNextFrame() {
  82         Graphics g = img.createGraphics();
  83         g.setColor(Color.white);
  84         g.fillRect(0, 0, w, h);
  85 
  86         g.setColor(Color.red);
  87         g.drawLine(x, 0, x, h);
  88 
  89         g.setColor(Color.blue);
  90         g.drawLine(0, y, w, y);
  91 
  92         x += 2;
  93         y += 2;
  94 
  95         x %= w;
  96         y %= h;
  97 
  98         return img;
  99     }
 100 
 101     ImageWriter writer = null;
 102 
 103     private ImageWriter initWriter() throws IOException {
 104         ImageOutputStream ios =
 105             ImageIO.createImageOutputStream(new File(fname));
 106         writer = ImageIO.getImageWritersByFormatName("GIF").next();
 107 
 108         writer.setOutput(ios);
 109 
 110         return writer;
 111     }
 112 
 113     public static void main(String[] args) {
 114         try {
 115             AnimationTest t = new AnimationTest();
 116             t.initFrame();
 117 
 118             ImageWriter w = t.initWriter();
 119 
 120             ImageWriteParam p = w.getDefaultWriteParam();
 121 
 122             IIOMetadata streamMetadata = w.getDefaultStreamMetadata(p);
 123 
 124             w.prepareWriteSequence(streamMetadata);
 125 
 126             for (int i = 0; i < 50; i++) {
 127                 BufferedImage f = t.createNextFrame();
 128 
 129                 ImageTypeSpecifier type = new ImageTypeSpecifier(f);
 130 
 131                 IIOMetadata m = w.getDefaultImageMetadata(type, p);
 132 
 133                 w.writeToSequence(new IIOImage(f, null, m), p);
 134             }
 135             w.endWriteSequence();
 136 
 137             t.checkAnimation();
 138         } catch (Exception e) {
 139             throw new RuntimeException("Test failed.", e);
 140         }
 141     }
 142 
 143     protected void checkAnimation() throws IOException {
 144         ImageReader r = ImageIO.getImageReadersByFormatName("GIF").next();
 145         r.setInput(ImageIO.createImageInputStream(new File(fname)));
 146 
 147         int n = r.getNumImages(true);
 148         for (int i = 0; i < n; i++) {
 149             BufferedImage f = r.read(i);
 150             checkFrame(i, f);
 151         }
 152         System.out.println("Test passed.");
 153     }
 154 
 155     protected void checkFrame(int i, BufferedImage f) {
 156         int x = 2 * i + 1;
 157         for (int y = 0; y < h; y++) {
 158             int argb = f.getRGB(x, y);
 159             if (argb != 0xffffffff && !(argb == 0xff0000ff && y == 2 * i)) {
 160                 throw new RuntimeException("Test failed - bad frame");
 161             }
 162             argb = f.getRGB(y, x);
 163             if (argb != 0xffffffff && !(argb == 0xffff0000 && y == 2 * i)) {
 164                 throw new RuntimeException("Test failed - bad frame");
 165             }
 166         }
 167     }
 168 }