1/*
2 * Copyright (c) 2003, 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 4826548
27 * @summary Tests for reading PNG images with 5,6,7 and 8 colors in palette
28 */
29
30import java.awt.image.BufferedImage;
31import java.awt.image.IndexColorModel;
32import java.io.ByteArrayInputStream;
33import java.io.ByteArrayOutputStream;
34import java.io.IOException;
35
36import javax.imageio.ImageIO;
37
38public class ShortPaletteTest {
39
40    public static void main(String[] args) {
41
42        for (int numberColors = 2; numberColors <= 16; numberColors++) {
43            try {
44                ByteArrayOutputStream baos = new ByteArrayOutputStream();
45                BufferedImage image = createImage(numberColors);
46                ImageIO.write(image, "png", baos);
47                baos.close();
48                System.out.println("Number of colors: " + numberColors);
49                byte[] buffer = baos.toByteArray();
50                ByteArrayInputStream bais = new ByteArrayInputStream(buffer);
51                ImageIO.read(bais);
52                System.out.println("OK");
53            } catch (ArrayIndexOutOfBoundsException e) {
54                e.printStackTrace();
55                throw new RuntimeException("Test failed.");
56            } catch (IOException e) {
57                e.printStackTrace();
58                throw new RuntimeException("Unexpected exception was thrown."
59                                           + " Test failed.");
60            }
61        }
62    }
63
64    private static IndexColorModel createColorModel(int numberColors) {
65
66        byte[] colors = new byte[numberColors*3];
67        int depth = 4;
68        int startIndex = 0;
69
70        return new IndexColorModel(depth,
71                                   numberColors,
72                                   colors,
73                                   startIndex,
74                                   false);
75    }
76
77    private static BufferedImage createImage(int numberColors) {
78        return new BufferedImage(32,
79                                 32,
80                                 BufferedImage.TYPE_BYTE_BINARY,
81                                 createColorModel(numberColors));
82    }
83}
84