ImageTranscoderSpi


1   /*
2    * @(#)ImageTranscoderSpi.java  1.18 03/12/19
3    *
4    * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
5    * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6    */
7   
8   package javax.imageio.spi;
9   
10  import javax.imageio.ImageTranscoder  ;
11  
12  /**
13   * The service provider interface (SPI) for <code>ImageTranscoder</code>s.
14   * For more information on service provider classes, see the class comment
15   * for the <code>IIORegistry</code> class.
16   *
17   * @see IIORegistry
18   * @see javax.imageio.ImageTranscoder
19   *
20   * @version 0.5
21   */
22  public abstract class ImageTranscoderSpi extends IIOServiceProvider   {
23  
24      /**
25       * Constructs a blank <code>ImageTranscoderSpi</code>.  It is up
26       * to the subclass to initialize instance variables and/or
27       * override method implementations in order to provide working
28       * versions of all methods.
29       */
30      protected ImageTranscoderSpi() {
31      }
32  
33      /**
34       * Constructs an <code>ImageTranscoderSpi</code> with a given set
35       * of values.
36       *
37       * @param vendorName the vendor name.
38       * @param version a version identifier.
39       */
40      public ImageTranscoderSpi(String   vendorName,
41                                String   version) {
42          super(vendorName, version);
43      }
44  
45      /**
46       * Returns the fully qualified class name of an
47       * <code>ImageReaderSpi</code> class that generates
48       * <code>IIOMetadata</code> objects that may be used as input to
49       * this transcoder.
50       *
51       * @return a <code>String</code> containing the fully-qualified
52       * class name of the <code>ImageReaderSpi</code> implementation class.
53       *
54       * @see ImageReaderSpi
55       */
56      public abstract String   getReaderServiceProviderName();
57  
58      /**
59       * Returns the fully qualified class name of an
60       * <code>ImageWriterSpi</code> class that generates
61       * <code>IIOMetadata</code> objects that may be used as input to
62       * this transcoder.
63       *
64       * @return a <code>String</code> containing the fully-qualified
65       * class name of the <code>ImageWriterSpi</code> implementation class.
66       *
67       * @see ImageWriterSpi
68       */
69      public abstract String   getWriterServiceProviderName();
70  
71      /**
72       * Returns an instance of the <code>ImageTranscoder</code>
73       * implementation associated with this service provider.
74       *
75       * @return an <code>ImageTranscoder</code> instance.
76       */
77      public abstract ImageTranscoder   createTranscoderInstance();
78  }
79
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