Add AudioEngine with new implementation

Change-Id: I5eebe662ecbce9814ed3e763db56df9be737d11f
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>

src/imports/audioengine/qdeclarative_attenuationmodel_p.h

@@ -0,0 +1,138 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDECLARATIVEATTENUATIONMODEL_P_H
+#define QDECLARATIVEATTENUATIONMODEL_P_H
+
+#include <QtDeclarative/qdeclarative.h>
+#include <QtDeclarative/qdeclarativecomponent.h>
+#include <QVector3D>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeAttenuationModel : public QObject, public QDeclarativeParserStatus
+{
+    Q_OBJECT
+    Q_INTERFACES(QDeclarativeParserStatus)
+    Q_PROPERTY(QString name READ name WRITE setName)
+
+public:
+    QDeclarativeAttenuationModel(QObject *parent = 0);
+    ~QDeclarativeAttenuationModel();
+
+    void classBegin();
+    void componentComplete();
+
+    QString name() const;
+    void setName(const QString& name);
+
+    virtual qreal calculateGain(const QVector3D &listenerPosition, const QVector3D &sourcePosition) const = 0;
+
+protected:
+    bool m_complete;
+    QString m_name;
+
+private:
+    Q_DISABLE_COPY(QDeclarativeAttenuationModel);
+};
+
+class QDeclarativeAttenuationModelLinear : public QDeclarativeAttenuationModel
+{
+    Q_OBJECT
+    Q_PROPERTY(qreal start READ startDistance WRITE setStartDistance CONSTANT)
+    Q_PROPERTY(qreal end READ endDistance WRITE setEndDistance CONSTANT)
+
+public:
+    QDeclarativeAttenuationModelLinear(QObject *parent = 0);
+
+    void componentComplete();
+
+    qreal startDistance() const;
+    void setStartDistance(qreal startDist);
+
+    qreal endDistance() const;
+    void setEndDistance(qreal endDist);
+
+    qreal calculateGain(const QVector3D &listenerPosition, const QVector3D &sourcePosition) const;
+
+private:
+    Q_DISABLE_COPY(QDeclarativeAttenuationModelLinear);
+    qreal m_start;
+    qreal m_end;
+};
+
+class QDeclarativeAttenuationModelInverse : public QDeclarativeAttenuationModel
+{
+    Q_OBJECT
+    Q_PROPERTY(qreal start READ referenceDistance WRITE setReferenceDistance CONSTANT)
+    Q_PROPERTY(qreal end READ maxDistance WRITE setMaxDistance CONSTANT)
+    Q_PROPERTY(qreal rolloff READ rolloffFactor WRITE setRolloffFactor CONSTANT)
+
+public:
+    QDeclarativeAttenuationModelInverse(QObject *parent = 0);
+
+    void componentComplete();
+
+    qreal referenceDistance() const;
+    void setReferenceDistance(qreal referenceDistance);
+
+    qreal maxDistance() const;
+    void setMaxDistance(qreal maxDistance);
+
+    qreal rolloffFactor() const;
+    void setRolloffFactor(qreal rolloffFactor);
+
+    qreal calculateGain(const QVector3D &listenerPosition, const QVector3D &sourcePosition) const;
+
+private:
+    Q_DISABLE_COPY(QDeclarativeAttenuationModelInverse);
+    qreal m_ref;
+    qreal m_max;
+    qreal m_rolloff;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif