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diff --git a/src/multimedia/audio/qaudiooutput_win32_p.h b/src/multimedia/audio/qaudiooutput_win32_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 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  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.
+//
+
+#ifndef QAUDIOOUTPUTWIN_H
+#define QAUDIOOUTPUTWIN_H
+
+#include <windows.h>
+#include <mmsystem.h>
+
+#include <QtCore/qdebug.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qdatetime.h>
+#include <QtCore/qmutex.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+
+
+QT_BEGIN_NAMESPACE
+
+class QAudioOutputPrivate : public QAbstractAudioOutput
+{
+    Q_OBJECT
+public:
+    QAudioOutputPrivate(const QByteArray &device, const QAudioFormat& audioFormat);
+    ~QAudioOutputPrivate();
+
+    qint64 write( const char *data, qint64 len );
+
+    QAudioFormat format() const;
+    QIODevice* start(QIODevice* device = 0);
+    void stop();
+    void reset();
+    void suspend();
+    void resume();
+    int bytesFree() const;
+    int periodSize() const;
+    void setBufferSize(int value);
+    int bufferSize() const;
+    void setNotifyInterval(int milliSeconds);
+    int notifyInterval() const;
+    qint64 processedUSecs() const;
+    qint64 elapsedUSecs() const;
+    QAudio::Error error() const;
+    QAudio::State state() const;
+
+    QIODevice* audioSource;
+    QAudioFormat settings;
+    QAudio::Error errorState;
+    QAudio::State deviceState;
+
+private slots:
+    void feedback();
+    bool deviceReady();
+
+private:
+    QByteArray m_device;
+    bool resuming;
+    int bytesAvailable;
+    QTime timeStamp;
+    qint64 elapsedTimeOffset;
+    QTime timeStampOpened;
+    qint32 buffer_size;
+    qint32 period_size;
+    qint64 totalTimeValue;
+    bool pullMode;
+    int intervalTime;
+    static void QT_WIN_CALLBACK waveOutProc( HWAVEOUT hWaveOut, UINT uMsg,
+            DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 );
+
+    QMutex mutex;
+
+    WAVEHDR* allocateBlocks(int size, int count);
+    void freeBlocks(WAVEHDR* blockArray);
+    bool open();
+    void close();
+
+    WAVEFORMATEX wfx;
+    HWAVEOUT hWaveOut;
+    MMRESULT result;
+    WAVEHDR header;
+    WAVEHDR* waveBlocks;
+    volatile bool finished;
+    volatile int waveFreeBlockCount;
+    int waveCurrentBlock;
+    char* audioBuffer;
+};
+
+class OutputPrivate : public QIODevice
+{
+    Q_OBJECT
+public:
+    OutputPrivate(QAudioOutputPrivate* audio);
+    ~OutputPrivate();
+
+    qint64 readData( char* data, qint64 len);
+    qint64 writeData(const char* data, qint64 len);
+
+private:
+    QAudioOutputPrivate *audioDevice;
+};
+
+QT_END_NAMESPACE
+
+#endif