Add Windows Media Foundation backend for QMediaPlayer

Task-number:QTMOBILITY-1606
Reviewed-by: Michael Goddard
(cherry picked from commit bdf3a9b39661cfb836245139d02e95e854646a7e)
(cherry picked from commit 8d2370953eb32bf44a037244e0d9f9b484875f7a)

Change-Id: I07790b8c540a04e4e19a3d018a4884a773e980bf
Reviewed-on: http://codereview.qt.nokia.com/2086
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Ling Hu <ling.hu@nokia.com>

src/plugins/wmf/player/mfplayercontrol.h

@@ -0,0 +1,124 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MFPLAYERCONTROL_H
+#define MFPLAYERCONTROL_H
+
+#include "qmediacontent.h"
+#include "qmediaplayercontrol.h"
+
+#include <QtCore/qcoreevent.h>
+
+#include "mfplayersession.h"
+
+QT_USE_NAMESPACE
+
+class MFPlayerControl : public QMediaPlayerControl
+{
+    Q_OBJECT
+public:
+    MFPlayerControl(MFPlayerSession *session);
+    ~MFPlayerControl();
+
+    QMediaPlayer::State state() const;
+
+    QMediaPlayer::MediaStatus mediaStatus() const;
+
+    qint64 duration() const;
+
+    qint64 position() const;
+    void setPosition(qint64 position);
+
+    int volume() const;
+    void setVolume(int volume);
+
+    bool isMuted() const;
+    void setMuted(bool muted);
+
+    int bufferStatus() const;
+
+    bool isAudioAvailable() const;
+    bool isVideoAvailable() const;
+
+    bool isSeekable() const;
+
+    QMediaTimeRange availablePlaybackRanges() const;
+
+    qreal playbackRate() const;
+    void setPlaybackRate(qreal rate);
+
+    QMediaContent media() const;
+    const QIODevice *mediaStream() const;
+    void setMedia(const QMediaContent &media, QIODevice *stream);
+
+    void play();
+    void pause();
+    void stop();
+
+private Q_SLOTS:
+    void handleStatusChanged();
+    void handleVideoAvailable();
+    void handleAudioAvailable();
+    void handleDurationUpdate(qint64 duration);
+    void handleSeekableUpdate(bool seekable);
+    void handleError(QMediaPlayer::Error errorCode, const QString& errorString, bool isFatal);
+
+private:
+    void changeState(QMediaPlayer::State state);
+    void resetAudioVideoAvailable();
+    void refreshState();
+
+    QMediaPlayer::State m_state;
+    bool m_stateDirty;
+    QMediaPlayer::MediaStatus m_status;
+    QMediaPlayer::Error m_error;
+
+    bool     m_videoAvailable;
+    bool     m_audioAvailable;
+    qint64   m_duration;
+    bool     m_seekable;
+
+    QIODevice *m_stream;
+    QMediaContent m_media;
+    MFPlayerSession *m_session;
+};
+
+#endif