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 6297016 6294960 6294965 6294984
27 * @summary Test verifies that buffered images are written correctly if
28 *          compression BI_BITFIELDS is used
29 */
30
31import java.awt.Color;
32import java.awt.Graphics;
33import java.awt.Graphics2D;
34import java.awt.color.ColorSpace;
35import java.awt.image.BufferedImage;
36import java.io.ByteArrayInputStream;
37import java.io.ByteArrayOutputStream;
38import java.io.File;
39import java.io.FileOutputStream;
40import java.io.IOException;
41
42import javax.imageio.IIOImage;
43import javax.imageio.ImageIO;
44import javax.imageio.ImageReader;
45import javax.imageio.ImageWriteParam;
46import javax.imageio.ImageWriter;
47
48public class TestCompressionBI_BITFIELDS {
49
50    protected String format = "BMP";
51
52    protected ImageReader reader;
53
54    protected ImageWriter writer;
55
56    protected boolean doSave = true;
57
58    Color[] colors = {
59        Color.red, Color.green, Color.blue,
60        Color.yellow, Color.white, Color.black};
61
62    int dx = 50;
63    int h = 200;
64
65    public TestCompressionBI_BITFIELDS() {
66        this("BMP");
67    }
68
69    public TestCompressionBI_BITFIELDS(String format) {
70        this.format = format;
71        reader = ImageIO.getImageReadersByFormatName(format).next();
72        writer = ImageIO.getImageWritersByFormatName(format).next();
73    }
74
75    protected ImageWriteParam prepareWriteParam(BufferedImage src) {
76        ImageWriteParam wparam = writer.getDefaultWriteParam();
77        wparam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
78        wparam.setCompressionType("BI_BITFIELDS");
79
80        return wparam;
81    }
82
83    public BufferedImage writeAndRead(BufferedImage src) throws IOException {
84        writer.reset();
85        ByteArrayOutputStream baos = new ByteArrayOutputStream();
86        writer.setOutput(ImageIO.createImageOutputStream(baos));
87
88        ImageWriteParam wparam = prepareWriteParam(src);
89
90        IIOImage img = new IIOImage(src, null, null);
91
92        writer.write(null, img, wparam);
93
94        if (doSave) {
95            // save images to file in order to be able to check
96            // that image is well-formed using standard windows tools.
97            File f = File.createTempFile("wr_test_", "." + format, new File("."));
98            System.out.println("Save to file: " + f.getCanonicalPath());
99            FileOutputStream fos = new FileOutputStream(f);
100            fos.write(baos.toByteArray());
101            fos.flush();
102            fos.close();
103        }
104
105        // read result
106        reader.reset();
107        ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
108        reader.setInput(ImageIO.createImageInputStream(bais));
109
110        return reader.read(0);
111    }
112
113    public static void main(String[] args) throws IOException {
114        // buffered image types listed below can be saved as BI_BITFIELDS BMP
115        int[] types = {BufferedImage.TYPE_3BYTE_BGR,
116                       BufferedImage.TYPE_USHORT_555_RGB,
117                       BufferedImage.TYPE_USHORT_565_RGB,
118                       BufferedImage.TYPE_BYTE_GRAY,
119                       BufferedImage.TYPE_BYTE_BINARY,
120                       BufferedImage.TYPE_BYTE_INDEXED,
121                       BufferedImage.TYPE_INT_BGR,
122                       BufferedImage.TYPE_INT_RGB};
123
124        for (int i = 0; i < types.length; i++) {
125            System.out.println("Test image " + types[i]);
126            TestCompressionBI_BITFIELDS t = new TestCompressionBI_BITFIELDS();
127
128            BufferedImage src =
129                t.createTestImage(types[i]);
130            System.out.println("Image for test: " + src);
131            System.out.println("SampleModel: " + src.getSampleModel());
132
133            BufferedImage dst = null;
134            try {
135                dst = t.writeAndRead(src);
136            } catch (IOException e) {
137                e.printStackTrace(System.out);
138            }
139
140
141            t.compareImages(src, dst);
142        }
143    }
144
145    protected BufferedImage createTestImage(int type) {
146        BufferedImage bimg = new BufferedImage(dx * colors.length, h, type);
147        Graphics2D g = bimg.createGraphics();
148
149        for (int i = 0; i < colors.length; i++) {
150            g.setColor(colors[i]);
151            g.fillRect(dx * i, 0, dx, h);
152        }
153        return bimg;
154    }
155
156    protected void compareImages(BufferedImage src, BufferedImage dst) {
157        ColorSpace srcCS = src.getColorModel().getColorSpace();
158        ColorSpace dstCS = dst.getColorModel().getColorSpace();
159        if (!srcCS.equals(dstCS) && srcCS.getType() == ColorSpace.TYPE_GRAY) {
160            System.out.println("Workaround color difference with GRAY.");
161            BufferedImage tmp  =
162                new BufferedImage(src.getWidth(), src.getHeight(),
163                                  BufferedImage.TYPE_INT_RGB);
164            Graphics g = tmp.createGraphics();
165            g.drawImage(src, 0, 0, null);
166            src = tmp;
167        }
168        int y = h / 2;
169        for (int i = 0; i < colors.length; i++) {
170            int x = dx * i + dx / 2;
171            int srcRgb = src.getRGB(x, y);
172            int dstRgb = dst.getRGB(x, y);
173
174            if (srcRgb != dstRgb) {
175                throw new RuntimeException("Test failed due to color difference: " +
176                                           "src_pixel=" + Integer.toHexString(srcRgb) +
177                                           "dst_pixel=" + Integer.toHexString(dstRgb));
178            }
179        }
180    }
181}
182