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Java > Open Source Codes > net > sf > jasperreports > engine > util > JRDefaultImageEncoder


1 /*
2  * ============================================================================
3  * GNU Lesser General Public License
4  * ============================================================================
5  *
6  * JasperReports - Free Java report-generating library.
7  * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22  *
23  * JasperSoft Corporation
24  * 303 Second Street, Suite 450 North
25  * San Francisco, CA 94107
26  * http://www.jaspersoft.com
27  */
28 package net.sf.jasperreports.engine.util;
29
30 import java.awt.image.BufferedImage JavaDoc;
31 import java.io.ByteArrayOutputStream JavaDoc;
32 import java.io.IOException JavaDoc;
33
34 import net.sf.jasperreports.engine.JRException;
35 import net.sf.jasperreports.engine.JRRenderable;
36
37 import com.keypoint.PngEncoderB;
38 import com.sun.image.codec.jpeg.JPEGCodec;
39 import com.sun.image.codec.jpeg.JPEGEncodeParam;
40 import com.sun.image.codec.jpeg.JPEGImageEncoder;
41
42
43 /**
44  * @author Teodor Danciu (teodord@users.sourceforge.net)
45  * @version $Id: JRImageLoader.java 1229 2006-04-19 13:27:35 +0300 (Wed, 19 Apr 2006) teodord $
46  */
47 public class JRDefaultImageEncoder extends JRAbstractImageEncoder
48 {
49
50     
51     /**
52      *
53      */
54     public byte[] encode(BufferedImage JavaDoc bi, byte imageType) throws JRException
55     {
56         byte[] bytes = null;
57         
58         switch (imageType)
59         {
60             case JRRenderable.IMAGE_TYPE_PNG :
61             {
62                 bytes = new PngEncoderB(bi).pngEncode();
63                 break;
64             }
65             case JRRenderable.IMAGE_TYPE_JPEG :
66             {
67                 ByteArrayOutputStream JavaDoc baos = new ByteArrayOutputStream JavaDoc();
68                 
69                 try
70                 {
71                     JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(baos);
72                     JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
73                     param.setQuality(1f, true);//1f = JPG_QUALITY
74 encoder.encode(bi, param);
75                 }
76                 catch (IOException JavaDoc e)
77                 {
78                     throw new JRException(e);
79                 }
80                 
81                 bytes = baos.toByteArray();
82                 break;
83             }
84             case JRRenderable.IMAGE_TYPE_GIF :
85             case JRRenderable.IMAGE_TYPE_TIFF :
86             case JRRenderable.IMAGE_TYPE_UNKNOWN :
87             default:
88             {
89                 throw new JRException("Image type \"" + imageType + "\" not supported by this image encoder.");
90             }
91         }
92         
93         return bytes;
94     }
95
96
97 }
98
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