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 plugins 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
40#ifndef QDECLARATIVEMULTIMEDIAGLOBAL_P_H
41#define QDECLARATIVEMULTIMEDIAGLOBAL_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists for the convenience
48// of other Qt classes. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtQml/qqml.h>
55#include <QtQml/qjsvalue.h>
56#include <QtMultimedia/qaudio.h>
57
58QT_BEGIN_NAMESPACE
59
60class QDeclarativeMultimediaGlobal : public QObject
61{
62 Q_OBJECT
63
64 Q_PROPERTY(QJSValue defaultCamera READ defaultCamera NOTIFY defaultCameraChanged)
65 Q_PROPERTY(QJSValue availableCameras READ availableCameras NOTIFY availableCamerasChanged)
66
67 Q_ENUMS(VolumeScale)
68
69public:
70 enum VolumeScale {
71 LinearVolumeScale = QAudio::LinearVolumeScale,
72 CubicVolumeScale = QAudio::CubicVolumeScale,
73 LogarithmicVolumeScale = QAudio::LogarithmicVolumeScale,
74 DecibelVolumeScale = QAudio::DecibelVolumeScale
75 };
76
77 explicit QDeclarativeMultimediaGlobal(QJSEngine *engine, QObject *parent = 0);
78
79 QJSValue defaultCamera() const;
80 QJSValue availableCameras() const;
81
82 Q_INVOKABLE qreal convertVolume(qreal volume, VolumeScale from, VolumeScale to) const;
83
84Q_SIGNALS:
85 // Unused at the moment. QCameraInfo doesn't notify when cameras are added or removed,
86 // but it might change in the future.
87 void defaultCameraChanged();
88 void availableCamerasChanged();
89
90private:
91 QJSEngine *m_engine;
92};
93
94QT_END_NAMESPACE
95
96#endif // QDECLARATIVEMULTIMEDIAGLOBAL_P_H
97

source code of qtmultimedia/src/imports/multimedia/qdeclarativemultimediaglobal_p.h