1 /* BMPImageReaderSpi.java --
2    Copyright (C)  2005  Free Software Foundation, Inc.
3 
4 This file is part of GNU Classpath.
5 
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10 
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 General Public License for more details.
15 
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING.  If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 02110-1301 USA.
20 
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library.  Thus, the terms and
23 conditions of the GNU General Public License cover the whole
24 combination.
25 
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module.  An independent module is a module which is not derived from
33 or based on this library.  If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so.  If you do not wish to do so, delete this
36 exception statement from your version. */
37 
38 package gnu.javax.imageio.bmp;
39 
40 import java.io.IOException;
41 import java.util.Locale;
42 import javax.imageio.ImageReader;
43 import javax.imageio.spi.ImageReaderSpi;
44 import javax.imageio.stream.ImageInputStream;
45 
46 public class BMPImageReaderSpi extends ImageReaderSpi {
47 
48     static final String vendorName = "GNU";
49     static final String version = "0.1";
50     static final String readerClassName =
51         "gnu.javax.imageio.bmp.BMPImageReader";
52     static final String[] names = { "Microsoft Windows BMP" };
53     static final String[] suffixes = { ".bmp", ".bm" };
54     static final String[] MIMETypes = {
55         "image/bmp",
56         "image/x-windows-bmp"};
57     static final String[] writerSpiNames =
58     { "gnu.javax.imageio.bmp.BMPImageWriterSpi" };
59 
60     static final boolean supportsStandardStreamMetadataFormat = false;
61     static final String nativeStreamMetadataFormatName = null;
62     static final String nativeStreamMetadataFormatClassName = null;
63     static final String[] extraStreamMetadataFormatNames = null;
64     static final String[] extraStreamMetadataFormatClassNames = null;
65     static final boolean supportsStandardImageMetadataFormat = false;
66     static final String nativeImageMetadataFormatName = null;
67     static final String nativeImageMetadataFormatClassName = null;
68     static final String[] extraImageMetadataFormatNames = null;
69     static final String[] extraImageMetadataFormatClassNames = null;
70 
BMPImageReaderSpi()71     public BMPImageReaderSpi() {
72         super(vendorName, version,
73               names, suffixes, MIMETypes,
74               readerClassName,
75               STANDARD_INPUT_TYPE, // Accept ImageInputStreams
76               writerSpiNames,
77               supportsStandardStreamMetadataFormat,
78               nativeStreamMetadataFormatName,
79               nativeStreamMetadataFormatClassName,
80               extraStreamMetadataFormatNames,
81               extraStreamMetadataFormatClassNames,
82               supportsStandardImageMetadataFormat,
83               nativeImageMetadataFormatName,
84               nativeImageMetadataFormatClassName,
85               extraImageMetadataFormatNames,
86               extraImageMetadataFormatClassNames);
87     }
88 
getDescription(Locale locale)89     public String getDescription(Locale locale) {
90         return "Microsoft BMP v3";
91     }
92 
canDecodeInput(Object input)93     public boolean canDecodeInput(Object input)
94         throws IOException {
95         if (!(input instanceof ImageInputStream))
96             return false;
97 
98         ImageInputStream in = (ImageInputStream)input;
99         boolean retval;
100 
101         in.mark();
102         try {
103             new BMPFileHeader(in);
104             retval = true;
105         } catch(BMPException e){
106             retval = false;
107         }
108         in.reset();
109 
110         return retval;
111     }
112 
createReaderInstance(Object extension)113     public ImageReader createReaderInstance(Object extension) {
114         return new BMPImageReader(this);
115     }
116 }
117