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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGSTREAMERPLAYERCONTROL_P_H
+#define QGSTREAMERPLAYERCONTROL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qstack.h>
+#include <qmediaplayercontrol.h>
+#include <private/qgsttools_global_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QMediaPlayerResourceSetInterface;
+class QGstreamerPlayerSession;
+class Q_GSTTOOLS_EXPORT QGstreamerPlayerControl : public QMediaPlayerControl
+{
+    Q_OBJECT
+
+public:
+    QGstreamerPlayerControl(QGstreamerPlayerSession *session, QObject *parent = 0);
+    ~QGstreamerPlayerControl();
+
+    QGstreamerPlayerSession *session() { return m_session; }
+
+    QMediaPlayer::State state() const override;
+    QMediaPlayer::MediaStatus mediaStatus() const override;
+
+    qint64 position() const override;
+    qint64 duration() const override;
+
+    int bufferStatus() const override;
+
+    int volume() const override;
+    bool isMuted() const override;
+
+    bool isAudioAvailable() const override;
+    bool isVideoAvailable() const override;
+    void setVideoOutput(QObject *output);
+
+    bool isSeekable() const override;
+    QMediaTimeRange availablePlaybackRanges() const override;
+
+    qreal playbackRate() const override;
+    void setPlaybackRate(qreal rate) override;
+
+    QMediaContent media() const override;
+    const QIODevice *mediaStream() const override;
+    void setMedia(const QMediaContent&, QIODevice *) override;
+
+    QMediaPlayerResourceSetInterface* resources() const;
+
+public Q_SLOTS:
+    void setPosition(qint64 pos) override;
+
+    void play() override;
+    void pause() override;
+    void stop() override;
+
+    void setVolume(int volume) override;
+    void setMuted(bool muted) override;
+
+private Q_SLOTS:
+    void updateSessionState(QMediaPlayer::State state);
+    void updateMediaStatus();
+    void processEOS();
+    void setBufferProgress(int progress);
+
+    void handleInvalidMedia();
+
+    void handleResourcesGranted();
+    void handleResourcesLost();
+    void handleResourcesDenied();
+
+private:
+    void playOrPause(QMediaPlayer::State state);
+
+    void pushState();
+    void popAndNotifyState();
+
+    QGstreamerPlayerSession *m_session;
+    QMediaPlayer::State m_userRequestedState;
+    QMediaPlayer::State m_currentState;
+    QMediaPlayer::MediaStatus m_mediaStatus;
+    QStack<QMediaPlayer::State> m_stateStack;
+    QStack<QMediaPlayer::MediaStatus> m_mediaStatusStack;
+
+    int m_bufferProgress;
+    qint64 m_pendingSeekPosition;
+    bool m_setMediaPending;
+    QMediaContent m_currentResource;
+    QIODevice *m_stream;
+
+    QMediaPlayerResourceSetInterface *m_resources;
+};
+
+QT_END_NAMESPACE
+
+#endif