1 /*
2  * Copyright (c) 2003, 2010, 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.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24  */
25 
26 package com.sun.imageio.plugins.bmp;
27 
28 import java.util.Locale;
29 import javax.imageio.spi.ImageReaderSpi;
30 import javax.imageio.stream.ImageInputStream;
31 import javax.imageio.spi.IIORegistry;
32 import javax.imageio.spi.ServiceRegistry;
33 import java.io.IOException;
34 import javax.imageio.ImageReader;
35 import javax.imageio.IIOException;
36 
37 public class BMPImageReaderSpi extends ImageReaderSpi {
38 
39     private static String [] writerSpiNames =
40         {"com.sun.imageio.plugins.bmp.BMPImageWriterSpi"};
41     private static String[] formatNames = {"bmp", "BMP"};
42     private static String[] entensions = {"bmp"};
43     private static String[] mimeType = {"image/bmp"};
44 
45     private boolean registered = false;
46 
BMPImageReaderSpi()47     public BMPImageReaderSpi() {
48         super("Oracle Corporation",
49               "1.0",
50               formatNames,
51               entensions,
52               mimeType,
53               "com.sun.imageio.plugins.bmp.BMPImageReader",
54               new Class<?>[] { ImageInputStream.class },
55               writerSpiNames,
56               false,
57               null, null, null, null,
58               true,
59               BMPMetadata.nativeMetadataFormatName,
60               "com.sun.imageio.plugins.bmp.BMPMetadataFormat",
61               null, null);
62     }
63 
onRegistration(ServiceRegistry registry, Class<?> category)64     public void onRegistration(ServiceRegistry registry,
65                                Class<?> category) {
66         if (registered) {
67             return;
68         }
69         registered = true;
70     }
71 
getDescription(Locale locale)72     public String getDescription(Locale locale) {
73         return "Standard BMP Image Reader";
74     }
75 
canDecodeInput(Object source)76     public boolean canDecodeInput(Object source) throws IOException {
77         if (!(source instanceof ImageInputStream)) {
78             return false;
79         }
80 
81         ImageInputStream stream = (ImageInputStream)source;
82         byte[] b = new byte[2];
83         stream.mark();
84         stream.readFully(b);
85         stream.reset();
86 
87         return (b[0] == 0x42) && (b[1] == 0x4d);
88     }
89 
createReaderInstance(Object extension)90     public ImageReader createReaderInstance(Object extension)
91         throws IIOException {
92         return new BMPImageReader(this);
93     }
94 }
95