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Java > Open Source Codes > org > krysalis > barcode > output > bitmap > SunJPEGBitmapEncoder


1 /*
2  * $Id: SunJPEGBitmapEncoder.java,v 1.3 2003/10/31 08:08:34 jmaerki Exp $
3  * ============================================================================
4  * The Krysalis Patchy Software License, Version 1.1_01
5  * Copyright (c) 2002-2003 Nicola Ken Barozzi. All rights reserved.
6  *
7  * This Licence is compatible with the BSD licence as described and
8  * approved by http://www.opensource.org/, and is based on the
9  * Apache Software Licence Version 1.1.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  *
15  * 1. Redistributions of source code must retain the above copyright
16  * notice, this list of conditions and the following disclaimer.
17  *
18  * 2. Redistributions in binary form must reproduce the above copyright
19  * notice, this list of conditions and the following disclaimer in
20  * the documentation and/or other materials provided with the
21  * distribution.
22  *
23  * 3. The end-user documentation included with the redistribution,
24  * if any, must include the following acknowledgment:
25  * "This product includes software developed for project
26  * Krysalis (http://www.krysalis.org/)."
27  * Alternately, this acknowledgment may appear in the software itself,
28  * if and wherever such third-party acknowledgments normally appear.
29  *
30  * 4. The names "Krysalis" and "Nicola Ken Barozzi" and
31  * "Krysalis Barcode" must not be used to endorse or promote products
32  * derived from this software without prior written permission. For
33  * written permission, please contact nicolaken@krysalis.org.
34  *
35  * 5. Products derived from this software may not be called "Krysalis",
36  * "Krysalis Barcode", nor may "Krysalis" appear in their name,
37  * without prior written permission of Nicola Ken Barozzi.
38  *
39  * 6. This software may contain voluntary contributions made by many
40  * individuals, who decided to donate the code to this project in
41  * respect of this licence, and was originally created by
42  * Jeremias Maerki <jeremias@maerki.org>.
43  *
44  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
45  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
46  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
47  * DISCLAIMED. IN NO EVENT SHALL THE KRYSALIS PROJECT OR
48  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
49  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
50  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
51  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
52  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
53  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
54  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55  * SUCH DAMAGE.
56  * ====================================================================
57  */
58 package org.krysalis.barcode.output.bitmap;
59
60 import java.awt.image.BufferedImage JavaDoc;
61 import java.io.IOException JavaDoc;
62 import java.io.OutputStream JavaDoc;
63
64 import com.sun.image.codec.jpeg.JPEGCodec;
65 import com.sun.image.codec.jpeg.JPEGEncodeParam;
66 import com.sun.image.codec.jpeg.JPEGImageEncoder;
67
68 /**
69  * BitmapEncoder implementation using Sun's JPEG encoder from the JDK.
70  *
71  * @author Jeremias Maerki
72  */
73 public class SunJPEGBitmapEncoder implements BitmapEncoder {
74
75     private static final String JavaDoc MIME_JPEG = "image/jpeg";
76
77     /**
78      * Constructs the BitmapEncoder. The constructor checks if Sun's JPEG
79      * encoder is available so it doesn't get registered in case it's not
80      * there.
81      * @throws ClassNotFoundException if Sun's JPEG encoder is unavailable
82      */
83     public SunJPEGBitmapEncoder() throws ClassNotFoundException JavaDoc {
84         Class.forName("com.sun.image.codec.jpeg.JPEGCodec");
85     }
86
87     /** {@inheritDoc} */
88     public String JavaDoc[] getSupportedMIMETypes() {
89         return new String JavaDoc[] {MIME_JPEG};
90     }
91
92     /** {@inheritDoc} */
93     public void encode(BufferedImage JavaDoc image, OutputStream JavaDoc out, String JavaDoc mime, int resolution)
94                 throws IOException JavaDoc {
95         if (!MIME_JPEG.equals(mime)) {
96             throw new IllegalArgumentException JavaDoc("Unsupported MIME type: " + mime);
97         }
98         JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
99         JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(image);
100         //param.setQuality(0.8f, true);
101 param.setXDensity(resolution);
102         param.setYDensity(resolution);
103         param.setDensityUnit(JPEGEncodeParam.DENSITY_UNIT_DOTS_INCH);
104         encoder.encode(image, param);
105     }
106
107 }
108
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