1/*
2 Copyright (C) 2012 Trever Fischer <tdfischer@fedoraproject.org>
3 Copyright (C) 2012 Harald Sitter <sitter@kde.org>
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) version 3, or any
9 later version accepted by the membership of KDE e.V. (or its
10 successor approved by the membership of KDE e.V.), Nokia Corporation
11 (or its successors, if any) and the KDE Free Qt Foundation, which shall
12 act as a proxy defined in Section 6 of version 3 of the license.
13
14 This library is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public
20 License along with this library. If not, see <http://www.gnu.org/licenses/>.
21*/
22
23#ifndef PHONON_STATESVALIDATOR_P_H
24#define PHONON_STATESVALIDATOR_P_H
25
26#include <QObject>
27
28#include "phononnamespace.h"
29
30namespace Phonon
31{
32
33class MediaObject;
34
35class StatesValidator : public QObject
36{
37 Q_OBJECT
38public:
39 explicit StatesValidator(MediaObject *parent = nullptr);
40 ~StatesValidator() override;
41
42 inline void sourceQueued() { m_sourceQueued = true; }
43
44private slots:
45 void validateStateChange(Phonon::State, Phonon::State);
46 void validateTick(qint64 tick);
47 void validateAboutToFinish();
48 void validateFinished();
49 void validateBufferStatus();
50 void validateSourceChange();
51
52private:
53 bool validateStateTransition(Phonon::State newstate, Phonon::State oldstate);
54
55 MediaObject *m_mediaObject;
56
57 Phonon::State m_prevState; /** < Track prev state to do a better job at Buffering validation */
58
59 bool m_sourceQueued; /** < Track whether a source was queued in the backend */
60 qint64 m_pos; /** < Track position for abouttofinish validation */
61
62 bool m_aboutToFinishEmitted;
63 bool m_aboutToFinishBeforeSeek; /** < True when a seek was conducted before a source change */
64 qint64 m_aboutToFinishPos; /** < Position when abouttofinish was emitted */
65};
66
67} // namespace Phonon
68
69#endif // PHONON_STATESVALIDATOR_P_H
70

source code of phonon/phonon/statesvalidator_p.h