1 /*
2 * Copyright (c) 2018, 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 6574555
27 * @summary Test verifies that PNGImageWriter encodes the R, G, B
28 * values of bKGD chunk properly.
29 * @run main VerifyRGBValuesFromBKGDChunk
30 */
31
32 import java.awt.image.BufferedImage;
33 import java.io.File;
34 import java.io.IOException;
35 import java.nio.file.Files;
36 import java.util.Iterator;
37 import javax.imageio.ImageTypeSpecifier;
38 import javax.imageio.ImageWriter;
39 import javax.imageio.ImageReader;
40 import javax.imageio.ImageIO;
41 import javax.imageio.ImageWriteParam;
42 import javax.imageio.metadata.IIOMetadata;
43 import javax.imageio.metadata.IIOMetadataNode;
44 import javax.imageio.IIOImage;
45 import javax.imageio.stream.ImageInputStream;
46 import javax.imageio.stream.ImageOutputStream;
47
48 public class VerifyRGBValuesFromBKGDChunk {
49
50 public static void main(String[] args) throws IOException {
51 ImageOutputStream ios = null;
52 ImageInputStream iis = null;
53 File output = null;
54 try {
55 int width = 1;
56 int height = 1;
57 BufferedImage img = new
58 BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
59 Iterator<ImageWriter> iterWriter =
60 ImageIO.getImageWritersBySuffix("png");
61 ImageWriter writer = iterWriter.next();
62
63 ImageWriteParam param = writer.getDefaultWriteParam();
64 ImageTypeSpecifier specifier =
65 ImageTypeSpecifier.
66 createFromBufferedImageType(BufferedImage.TYPE_INT_BGR);
67 IIOMetadata encodeMetadata =
68 writer.getDefaultImageMetadata(specifier, param);
69
70 // Write png image with bKGD chunk
71 IIOMetadataNode bKGD_rgb = new IIOMetadataNode("bKGD_RGB");
72 String red = "100";
73 String green = "150";
74 String blue = "200";
75 bKGD_rgb.setAttribute("red", red);
76 bKGD_rgb.setAttribute("green", green);
77 bKGD_rgb.setAttribute("blue", blue);
78
79 IIOMetadataNode bKGD = new IIOMetadataNode("bKGD");
80 bKGD.appendChild(bKGD_rgb);
81 IIOMetadataNode encodeRoot =
82 new IIOMetadataNode("javax_imageio_png_1.0");
83 encodeRoot.appendChild(bKGD);
84
85 encodeMetadata.mergeTree("javax_imageio_png_1.0", encodeRoot);
86
87 String dir = System.getProperty("test.src");
88 String sep = System.getProperty("file.separator");
89 String filePath = dir + sep;
90 File directory = new File(filePath);
91 output = File.createTempFile("output", "png", directory);
92 ios = ImageIO.createImageOutputStream(output);
93 writer.setOutput(ios);
94
95 writer.write(encodeMetadata,
96 new IIOImage(img, null, encodeMetadata), param);
97 writer.dispose();
98
99 // Get bKGD chunk from image and verify the values
100 iis = ImageIO.createImageInputStream(output);
101 Iterator<ImageReader> iterReader =
102 ImageIO.getImageReadersBySuffix("png");
103 ImageReader reader = iterReader.next();
104 reader.setInput(iis, false, false);
105
106 IIOMetadata decodeMetadata = reader.getImageMetadata(0);
107 IIOMetadataNode decodeRoot =
108 (IIOMetadataNode) decodeMetadata.
109 getAsTree("javax_imageio_png_1.0");
110 bKGD_rgb = (IIOMetadataNode)
111 decodeRoot.getElementsByTagName("bKGD_RGB").item(0);
112
113 if (!(red.equals(bKGD_rgb.getAttribute("red")) &&
114 green.equals(bKGD_rgb.getAttribute("green")) &&
115 blue.equals(bKGD_rgb.getAttribute("blue")))) {
116 throw new RuntimeException("bKGD RGB values are not stored" +
117 " properly");
118 }
119 } finally {
120 if (ios != null) {
121 ios.close();
122 }
123 if (iis != null) {
124 iis.close();
125 }
126 if (output != null) {
127 Files.delete(output.toPath());
128 }
129 }
130 }
131 }
132