1 /*
2 * Copyright 2000 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package javax.imageio.spi;
27
28 import javax.imageio.ImageTranscoder;
29
30 /**
31 * The service provider interface (SPI) for <code>ImageTranscoder</code>s.
32 * For more information on service provider classes, see the class comment
33 * for the <code>IIORegistry</code> class.
34 *
35 * @see IIORegistry
36 * @see javax.imageio.ImageTranscoder
37 *
38 */
39 public abstract class ImageTranscoderSpi extends IIOServiceProvider {
40
41 /**
42 * Constructs a blank <code>ImageTranscoderSpi</code>. It is up
43 * to the subclass to initialize instance variables and/or
44 * override method implementations in order to provide working
45 * versions of all methods.
46 */
47 protected ImageTranscoderSpi() {
48 }
49
50 /**
51 * Constructs an <code>ImageTranscoderSpi</code> with a given set
52 * of values.
53 *
54 * @param vendorName the vendor name.
55 * @param version a version identifier.
56 */
57 public ImageTranscoderSpi(String vendorName,
58 String version) {
59 super(vendorName, version);
60 }
61
62 /**
63 * Returns the fully qualified class name of an
64 * <code>ImageReaderSpi</code> class that generates
65 * <code>IIOMetadata</code> objects that may be used as input to
66 * this transcoder.
67 *
68 * @return a <code>String</code> containing the fully-qualified
69 * class name of the <code>ImageReaderSpi</code> implementation class.
70 *
71 * @see ImageReaderSpi
72 */
73 public abstract String getReaderServiceProviderName();
74
75 /**
76 * Returns the fully qualified class name of an
77 * <code>ImageWriterSpi</code> class that generates
78 * <code>IIOMetadata</code> objects that may be used as input to
79 * this transcoder.
80 *
81 * @return a <code>String</code> containing the fully-qualified
82 * class name of the <code>ImageWriterSpi</code> implementation class.
83 *
84 * @see ImageWriterSpi
85 */
86 public abstract String getWriterServiceProviderName();
87
88 /**
89 * Returns an instance of the <code>ImageTranscoder</code>
90 * implementation associated with this service provider.
91 *
92 * @return an <code>ImageTranscoder</code> instance.
93 */
94 public abstract ImageTranscoder createTranscoderInstance();
95 }
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