1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39#ifndef QMEDIAGAPLESSPLAYBACKCONTROL_H
40#define QMEDIAGAPLESSPLAYBACKCONTROL_H
41
42#include <QtMultimedia/qmediacontrol.h>
43#include <QtMultimedia/qmediacontent.h>
44
45QT_BEGIN_NAMESPACE
46
47// Required for QDoc workaround
48class QString;
49
50class Q_MULTIMEDIA_EXPORT QMediaGaplessPlaybackControl : public QMediaControl
51{
52 Q_OBJECT
53public:
54 virtual ~QMediaGaplessPlaybackControl();
55
56 virtual QMediaContent nextMedia() const = 0;
57 virtual void setNextMedia(const QMediaContent &media) = 0;
58
59 virtual bool isCrossfadeSupported() const = 0;
60 virtual qreal crossfadeTime() const = 0;
61 virtual void setCrossfadeTime(qreal crossfadeTime) = 0;
62
63Q_SIGNALS:
64 void crossfadeTimeChanged(qreal crossfadeTime);
65 void nextMediaChanged(const QMediaContent& media);
66 void advancedToNextMedia();
67
68protected:
69 explicit QMediaGaplessPlaybackControl(QObject *parent = nullptr);
70};
71
72#define QMediaGaplessPlaybackControl_iid "org.qt-project.qt.mediagaplessplaybackcontrol/5.0"
73Q_MEDIA_DECLARE_CONTROL(QMediaGaplessPlaybackControl, QMediaGaplessPlaybackControl_iid)
74
75QT_END_NAMESPACE
76
77#endif // QMEDIAGAPLESSPLAYBACKCONTROL_H
78

source code of qtmultimedia/src/multimedia/controls/qmediagaplessplaybackcontrol.h