summaryrefslogtreecommitdiffstats
path: root/juk/ktrm.h
blob: d99cf9b33756a806e602c818e5eacdd94529eb2f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
/***************************************************************************
    copyright            : (C) 2004 by Scott Wheeler
    email                : wheeler@kde.org
 ***************************************************************************/

/***************************************************************************
 *   This library is free software; you can redistribute it and/or modify  *
 *   it  under the terms of the GNU Lesser General Public License version  *
 *   2.1 as published by the Free Software Foundation.                     *
 *                                                                         *
 *   This library is distributed in the hope that it will be useful, but   *
 *   WITHOUT ANY WARRANTY; without even the implied warranty of            *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the Free Software   *
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  *
 *   USA                                                                   *
 ***************************************************************************/

/*
 * At some point this will likely be a library class, as such it's been written
 * as such and is LGPL'ed.
 */

#ifndef KTRM_H
#define KTRM_H

#include <config.h>

#if HAVE_MUSICBRAINZ

#include <tqstring.h>
#include <tqvaluelist.h>
#include <tqmap.h>

/**
 * This represents a potential match for a TRM lookup.  KTRMResultList is
 * returned from KTRMLookup and will be sorted by relevance (better matches
 * at the beginning of the list).
 */

class KTRMResult
{
    friend class KTRMLookup;

public:
    KTRMResult();
    KTRMResult(const KTRMResult &result);
    ~KTRMResult();

    /**
     * Returns the title of the track for the potential match.
     */
    TQString title() const;

    /**
     * Returns the artist name of the track for the potential match.
     */
    TQString artist() const;

    /**
     * Returns the album name of the track for the potential match.
     */
    TQString album() const;

    /**
     * Returns the track number of the track for the potential match.
     */
    int track() const;

    /**
     * Returns the original release year of the track for the potential match.
     */
    int year() const;

    /**
     * Returns true if all of the values for the result are empty.
     */
    bool isEmpty() const;

    /**
     * Compares to \a r based on the relevance of the match.  Better matches
     * will be greater than less accurate matches.
     */
    bool operator<(const KTRMResult &r) const;

    /**
     * Compares to \a r based on the relevance of the match.  Better matches
     * will be greater than less accurate matches.
     */
    bool operator>(const KTRMResult &r) const;

private:
    class KTRMResultPrivate;
    KTRMResultPrivate *d;
};

typedef TQValueList<KTRMResult> KTRMResultList;

/**
 * An abstraction for libtunepimp's TRM based lookup and file recognition.
 *
 * A lookup is started when the object is created.  One of the virtual methods
 * -- recognized(), unrecognized(), collision() or error().  Those methods
 * should be reimplemented in subclasses to specify what behavior should happen
 * for each result.
 *
 * The lookups themselves happen in a background thread, but the return calls
 * are guaranteed to run in the GUI thread.
 */
class KTRMLookup
{
public:
    /**
     * Creates and starts a lookup for \a file.  If \a autoDelete is set to
     * true the lookup will delete itself when it has finished.
     */
    KTRMLookup(const TQString &file, bool autoDelete = false);

    virtual ~KTRMLookup();

    /**
     * Returns the file name that was specified in the constructor.
     */
    TQString file() const;

    /**
     * Returns the TunePimp file ID for the file.  This is of no use to the
     * public API.
     * 
     * @internal
     */
    int fileId() const;

    /**
     * This method is called if the track was recognized by the TRM server.
     * results() will return just one value.  This may be reimplemented to
     * provide specific behavion in the case of the track being recognized.
     *
     * \note The base class call should happen at the beginning of the subclass
     * reimplementation; it populates the values of results().
     */
    virtual void recognized();

    /**
     * This method is called if the track was not recognized by the TRM server.
     * results() will return an empty set.  This may be reimplemented to provide
     * specific behavion in the case of the track not being recognized.
     */
    virtual void unrecognized();

    /**
     * This method is called if there are multiple potential matches for the TRM
     * value.  results() will return a list of the potential matches, sorted by
     * liklihood.  This may be reimplemented to provide
     * specific behavion in the case of the track not being recognized.
     *
     * \note The base class call should happen at the beginning of the subclass
     * reimplementation; it populates the values of results().
     */
    virtual void collision();

    /**
     * This method is called if the track was not recognized by the TRM server.
     * results() will return an empty set.  This may be reimplemented to provide
     * specific behavion in the case of the track not being recognized.
     */
    virtual void error();

    /**
     * Returns the list of matches found by the lookup.  In the case that there
     * was a TRM collision this list will contain multiple entries.  In the case
     * that it was recognized this will only contain one entry.  Otherwise it
     * will remain empty.
     */
    KTRMResultList results() const;

protected:
    /**
     * This method is called when any of terminal states (recognized,
     * unrecognized, collision or error) has been reached after the specifc
     * method for the result has been called.
     *
     * This should be reimplemented in the case that there is some general
     * processing to be done for all terminal states.
     */
    virtual void finished();

private:
    class KTRMLookupPrivate;
    KTRMLookupPrivate *d;
};

#endif
#endif