Add AudioEngine with new implementation

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

src/imports/audioengine/qaudioengine_openal_p.h

@@ -0,0 +1,168 @@
+/****************************************************************************
+**
+** 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 QAUDIOENGINE_OPENAL_P_H
+#define QAUDIOENGINE_OPENAL_P_H
+
+#include <QObject>
+#include <QList>
+#include <QMap>
+#include <QTimer>
+
+#include <AL/al.h>
+#include <AL/alc.h>
+
+#include "qsoundsource_p.h"
+#include "qsoundbuffer_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QSoundBufferPrivateAL : public QSoundBuffer
+{
+    Q_OBJECT
+public:
+    QSoundBufferPrivateAL(QObject* parent);
+    virtual void bindToSource(ALuint alSource) = 0;
+    virtual void unbindFromSource(ALuint alSource) = 0;
+};
+
+class QSoundSourcePrivate : public QSoundSource
+{
+    Q_OBJECT
+public:
+    QSoundSourcePrivate(QObject *parent);
+    ~QSoundSourcePrivate();
+
+    void play();
+    void pause();
+    void stop();
+
+    QSoundSource::State state() const;
+
+    bool isLooping() const;
+    void setLooping(bool looping);
+    void setPosition(const QVector3D& position);
+    void setDirection(const QVector3D& direction);
+    void setVelocity(const QVector3D& velocity);
+
+    QVector3D velocity() const;
+    QVector3D position() const;
+    QVector3D direction() const;
+
+    void setGain(qreal gain);
+    void setPitch(qreal pitch);
+    void setCone(qreal innerAngle, qreal outerAngle, qreal outerGain);
+
+    void bindBuffer(QSoundBuffer*);
+    void unbindBuffer();
+
+    void checkState();
+
+    void release();
+
+Q_SIGNALS:
+    void activate(QObject*);
+
+private:
+    void sourcePlay();
+    void sourcePause();
+
+    ALuint  m_alSource;
+    QSoundBufferPrivateAL *m_bindBuffer;
+    bool                 m_isReady; //true if the sound source is already bound to some sound buffer
+    QSoundSource::State  m_state;
+    qreal   m_gain;
+    qreal   m_pitch;
+    qreal   m_coneInnerAngle;
+    qreal   m_coneOuterAngle;
+    qreal   m_coneOuterGain;
+};
+
+class QSampleCache;
+class QAudioEnginePrivate : public QObject
+{
+    Q_OBJECT
+public:
+    QAudioEnginePrivate(QObject *parent);
+    ~QAudioEnginePrivate();
+
+    bool isLoading() const;
+
+    QSoundSource* createSoundSource();
+    void releaseSoundSource(QSoundSource *soundInstance);
+    QSoundBuffer* getStaticSoundBuffer(const QUrl& url);
+    void releaseSoundBuffer(QSoundBuffer *buffer);
+
+    QVector3D listenerPosition() const;
+    QVector3D listenerVelocity() const;
+    qreal listenerGain() const;
+    void setListenerPosition(const QVector3D& position);
+    void setListenerVelocity(const QVector3D& velocity);
+    void setListenerOrientation(const QVector3D& direction, const QVector3D& up);
+    void setListenerGain(qreal gain);
+    void setDopplerFactor(qreal dopplerFactor);
+    void setSpeedOfSound(qreal speedOfSound);
+
+    static bool checkNoError(const char *msg);
+
+Q_SIGNALS:
+    void isLoadingChanged();
+
+private Q_SLOTS:
+    void updateSoundSources();
+    void soundSourceActivate(QObject *soundSource);
+
+private:
+    QList<QSoundSourcePrivate*> m_activeInstances;
+    QList<QSoundSourcePrivate*> m_instancePool;
+    QMap<QUrl, QSoundBufferPrivateAL*> m_staticBufferPool;
+
+    QSampleCache *m_sampleLoader;
+    QTimer m_updateTimer;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif