Add AudioEngine with new implementation

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

src/imports/audioengine/qdeclarative_audioengine_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 QDECLARATIVEAUDIOENGINE_P_H
+#define QDECLARATIVEAUDIOENGINE_P_H
+
+#include <QtDeclarative/qdeclarative.h>
+#include <QtDeclarative/qdeclarativecomponent.h>
+#include <QtDeclarative/qdeclarativepropertymap.h>
+#include <QtCore/QMap>
+#include <QtCore/QList>
+#include <QTimer>
+#include "qaudioengine_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeSoundInstance;
+class QDeclarativeAudioListener;
+class QDeclarativeAudioCategory;
+class QDeclarativeAudioSample;
+class QDeclarativeSound;
+class QDeclarativePlayVariation;
+class QAudioCategory;
+class QDeclarativeAttenuationModel;
+class QSoundInstance;
+
+class QDeclarativeAudioEngine : public QObject, public QDeclarativeParserStatus
+{
+    Q_OBJECT
+    Q_INTERFACES(QDeclarativeParserStatus)
+    Q_PROPERTY(QDeclarativeListProperty<QObject> bank READ bank CONSTANT)
+    Q_PROPERTY(QObject* categories READ categories CONSTANT)
+    Q_PROPERTY(QObject* samples READ samples CONSTANT)
+    Q_PROPERTY(QObject* sounds READ sounds CONSTANT)
+    Q_PROPERTY(bool loading READ isLoading NOTIFY isLoadingChanged)
+    Q_PROPERTY(int liveInstances READ liveInstanceCount NOTIFY liveInstanceCountChanged)
+    Q_PROPERTY(QDeclarativeAudioListener* listener READ listener CONSTANT)
+    Q_PROPERTY(qreal dopplerFactor READ dopplerFactor WRITE setDopplerFactor)
+    Q_PROPERTY(qreal speedOfSound READ speedOfSound WRITE setSpeedOfSound)
+    Q_CLASSINFO("DefaultProperty", "bank")
+
+public:
+    QDeclarativeAudioEngine(QObject *parent = 0);
+    ~QDeclarativeAudioEngine();
+
+    void classBegin();
+    void componentComplete();
+
+    //This is used for tracking all objects declared inside AudioEngine
+    //see appendFunction
+    QDeclarativeListProperty<QObject> bank();
+
+    QObject* categories();
+    QObject* samples();
+    QObject* sounds();
+
+    QDeclarativeAudioListener* listener() const;
+
+    qreal dopplerFactor() const;
+    void setDopplerFactor(qreal dopplerFactor);
+
+    qreal speedOfSound() const;
+    void setSpeedOfSound(qreal speedOfSound);
+
+    bool isLoading() const;
+
+    int liveInstanceCount() const;
+
+    //for child elements
+    bool isReady() const;
+    QAudioEngine* engine() const;
+
+    //if managed, then the instance should start playing immediately and will be collected
+    //when the playback finished
+    QDeclarativeSoundInstance* newDeclarativeSoundInstance(bool managed);
+
+    //internal sound instance is different from declarativeSoundInstance
+    //declarative instance is more like a soundInstance helper which can
+    //switch to different sound instance conveniently while sound instance
+    //must be mapped to one sound definition.
+    QSoundInstance* newSoundInstance(const QString &name);
+    void releaseSoundInstance(QSoundInstance* instance);
+
+Q_SIGNALS:
+    void ready();
+    void liveInstanceCountChanged();
+    void isLoadingChanged();
+    void finishedLoading();
+
+private Q_SLOTS:
+    void updateSoundInstances();
+    void handleLoadingChanged();
+
+private:
+    Q_DISABLE_COPY(QDeclarativeAudioEngine);
+    bool m_complete;
+
+    //see bank()
+    static void appendFunction(QDeclarativeListProperty<QObject> *property, QObject *value);
+
+    QDeclarativeAudioListener *m_listener;
+    QDeclarativeAudioCategory* m_defaultCategory;
+    QDeclarativePropertyMap m_categories;
+    QDeclarativePropertyMap m_samples;
+    QDeclarativePropertyMap m_sounds;
+
+    //Use strong type here since no need to for AttenuationModel to be accessible directly by user
+    //after config stage
+    QDeclarativeAttenuationModel *m_defaultAttenuationModel;
+    QMap<QString, QDeclarativeAttenuationModel*> m_attenuationModels;
+
+    QAudioEngine *m_audioEngine;
+
+    //for execution stage management
+    QList<QSoundInstance*> m_soundInstancePool;
+    QList<QSoundInstance*> m_activeSoundInstances;
+
+    QTimer m_updateTimer;
+    QList<QDeclarativeSoundInstance*> m_managedDeclSoundInstances;
+    QList<QDeclarativeSoundInstance*> m_managedDeclSndInstancePool;
+    void releaseManagedDeclarativeSoundInstance(QDeclarativeSoundInstance* declSndInstance);
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif