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/mfmetadatacontrol.h

@@ -0,0 +1,80 @@
+/****************************************************************************
+**
+** 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 MFMETADATACONTROL_H
+#define MFMETADATACONTROL_H
+
+#include <qmetadatareadercontrol.h>
+#include "Mfidl.h"
+
+QT_USE_NAMESPACE
+
+class MFMetaDataControl : public QMetaDataReaderControl
+{
+    Q_OBJECT
+public:
+    MFMetaDataControl(QObject *parent = 0);
+    ~MFMetaDataControl();
+
+    bool isMetaDataAvailable() const;
+
+    QVariant metaData(QtMultimediaKit::MetaData key) const;
+    QList<QtMultimediaKit::MetaData> availableMetaData() const;
+
+    QVariant extendedMetaData(const QString &key) const;
+    QStringList availableExtendedMetaData() const;
+
+    void updateSource(IMFPresentationDescriptor* sourcePD, IMFMediaSource* mediaSource);
+
+private:
+    QVariant convertValue(const PROPVARIANT& var) const;
+    IPropertyStore  *m_content;  //for Windows7
+    IMFMetadata        *m_metaData; //for Vista
+
+    QList<QtMultimediaKit::MetaData> m_availableMetaDatas;
+    QList<PROPERTYKEY> m_commonKeys; //for Windows7
+    QStringList        m_commonNames; //for Vista
+
+    QStringList m_extendedMetaDatas;
+    QList<PROPERTYKEY> m_extendedKeys; //for Windows7
+};
+
+#endif