1 | package org.farng.mp3.id3; |
2 | |
3 | import org.farng.mp3.InvalidTagException; |
4 | import org.farng.mp3.object.ObjectByteArraySizeTerminated; |
5 | import org.farng.mp3.object.ObjectStringNullTerminated; |
6 | |
7 | import java.io.IOException; |
8 | import java.io.RandomAccessFile; |
9 | |
10 | /** |
11 | * <h3>4.1. Unique file identifier</h3> |
12 | * <p/> |
13 | * <p> This frame's purpose is to be able to identify the audio file in a<br> database, that |
14 | * may provide more information relevant to the content.<br> Since standardisation of such a database is |
15 | * beyond this document, all<br> |
16 | * <p/> |
17 | * UFID frames begin with an 'owner identifier' field. It is a null-<br> terminated string |
18 | * with a URL [URL] containing an email address, or a<br> link to a location where an email address can be |
19 | * found, that belongs<br> to the organisation responsible for this specific database<br> |
20 | * implementation. Questions regarding the database should be sent to<br> |
21 | * <p/> |
22 | * the indicated email address. The URL should not be used for the<br> actual database |
23 | * queries. The string<br> "http://www.id3.org/dummy/ufid.html" should be used for tests. The<br> |
24 | * 'Owner identifier' must be non-empty (more than just a termination).<br> |
25 | * <p/> |
26 | * The 'Owner identifier' is then followed by the actual identifier,<br> which may be up to 64 |
27 | * bytes. There may be more than one "UFID" frame<br> in a tag, but only one with the same 'Owner |
28 | * identifier'.</p> |
29 | * <p/> |
30 | * <p> <Header for 'Unique file identifier', ID: "UFID"><br> |
31 | * Owner identifier <text string> $00<br> |
32 | * Identifier |
33 | * <p/> |
34 | * <up to 64 bytes binary data><br> </p> |
35 | * |
36 | * @author Eric Farng |
37 | * @version $Revision: 1.4 $ |
38 | */ |
39 | public class FrameBodyUFID extends AbstractID3v2FrameBody { |
40 | |
41 | /** |
42 | * Creates a new FrameBodyUFID object. |
43 | */ |
44 | public FrameBodyUFID() { |
45 | super(); |
46 | } |
47 | |
48 | /** |
49 | * Creates a new FrameBodyUFID object. |
50 | */ |
51 | public FrameBodyUFID(final FrameBodyUFID body) { |
52 | super(body); |
53 | } |
54 | |
55 | /** |
56 | * Creates a new FrameBodyUFID object. |
57 | */ |
58 | public FrameBodyUFID(final String owner, final byte[] identifier) { |
59 | setObject("Owner", owner); |
60 | setObject("Identifier", identifier); |
61 | } |
62 | |
63 | /** |
64 | * Creates a new FrameBodyUFID object. |
65 | */ |
66 | public FrameBodyUFID(final RandomAccessFile file) throws IOException, InvalidTagException { |
67 | this.read(file); |
68 | } |
69 | |
70 | public String getIdentifier() { |
71 | return "UFID" + ((char) 0) + getOwner(); |
72 | } |
73 | |
74 | public void setOwner(final String owner) { |
75 | setObject("Owner", owner); |
76 | } |
77 | |
78 | public String getOwner() { |
79 | return (String) getObject("Owner"); |
80 | } |
81 | |
82 | protected void setupObjectList() { |
83 | appendToObjectList(new ObjectStringNullTerminated("Owner")); |
84 | appendToObjectList(new ObjectByteArraySizeTerminated("Identifier")); |
85 | } |
86 | } |