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diff --git a/src/multimedia/mediaservices/effects/wavedecoder_p.h b/src/multimedia/mediaservices/effects/wavedecoder_p.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 QtMediaservices 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 WAVEDECODER_H
+#define WAVEDECODER_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qiodevice.h>
+#include <QtMultimedia/qaudioformat.h>
+
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+
+class WaveDecoder : public QIODevice
+{
+    Q_OBJECT
+
+public:
+    explicit WaveDecoder(QIODevice *source, QObject *parent = 0);
+    ~WaveDecoder();
+
+    QAudioFormat audioFormat() const;
+    int duration() const;
+
+    qint64 size() const;
+    bool isSequential() const;
+    qint64 bytesAvailable() const;
+
+Q_SIGNALS:
+    void formatKnown();
+    void invalidFormat();
+
+private Q_SLOTS:
+    void handleData();
+
+private:
+    qint64 readData(char *data, qint64 maxlen);
+    qint64 writeData(const char *data, qint64 len);
+
+    struct chunk
+    {
+        char        id[4];
+        quint32     size;
+    };
+    struct RIFFHeader
+    {
+        chunk       descriptor;
+        char        type[4];
+    };
+    struct WAVEHeader
+    {
+        chunk       descriptor;
+        quint16     audioFormat;
+        quint16     numChannels;
+        quint32     sampleRate;
+        quint32     byteRate;
+        quint16     blockAlign;
+        quint16     bitsPerSample;
+    };
+    struct DATAHeader
+    {
+        chunk       descriptor;
+    };
+    struct CombinedHeader
+    {
+        RIFFHeader  riff;
+        WAVEHeader  wave;
+    };
+
+    bool haveFormat;
+    qint64 dataSize;
+    qint64 remaining;
+    QAudioFormat format;
+    QIODevice *source;
+    CombinedHeader header;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // WAVEDECODER_H