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diff --git a/src/plugins/audio/symbian/symbianaudiodeviceinfo.h b/src/plugins/audio/symbian/symbianaudiodeviceinfo.h
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+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 SYMBIANAUDIODEVICEINFO_H
+#define SYMBIANAUDIODEVICEINFO_H
+
+#include <QtMultimedia/qaudioengine.h>
+#include <sounddevice.h>
+
+QT_BEGIN_NAMESPACE
+
+class SymbianAudioDeviceInfo
+    :   public QAbstractAudioDeviceInfo
+{
+    Q_OBJECT
+
+public:
+    SymbianAudioDeviceInfo(QByteArray device, QAudio::Mode mode);
+    ~SymbianAudioDeviceInfo();
+
+    // QAbstractAudioDeviceInfo
+    QAudioFormat preferredFormat() const;
+    bool isFormatSupported(const QAudioFormat &format) const;
+    QAudioFormat nearestFormat(const QAudioFormat &format) const;
+    QString deviceName() const;
+    QStringList codecList();
+    QList<int> frequencyList();
+    QList<int> channelsList();
+    QList<int> sampleSizeList();
+    QList<QAudioFormat::Endian> byteOrderList();
+    QList<QAudioFormat::SampleType> sampleTypeList();
+    QList<QByteArray> deviceList(QAudio::Mode);
+
+private:
+    void getSupportedFormats() const;
+
+private:
+    QScopedPointer<CMMFDevSound> m_devsound;
+
+    QString m_deviceName;
+    QAudio::Mode m_mode;
+
+    // Mutable to allow lazy initialization when called from const-qualified
+    // public functions (isFormatSupported, nearestFormat)
+    mutable bool m_updated;
+    mutable QStringList m_codecs;
+    mutable QList<int> m_frequencies;
+    mutable QList<int> m_channels;
+    mutable QList<int> m_sampleSizes;
+    mutable QList<QAudioFormat::Endian> m_byteOrders;
+    mutable QList<QAudioFormat::SampleType> m_sampleTypes;
+};
+
+QT_END_NAMESPACE
+
+#endif