/*  This file is part of the KDE project.

    Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

    This library is free software: you can redistribute it and/or modify

    it under the terms of the GNU Lesser General Public License as published by

    the Free Software Foundation, either version 2.1 or 3 of the License.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License

    along with this library.  If not, see <http://www.gnu.org/licenses/>.

*/

#ifndef Phonon_QT7_AudioNode_H

#define Phonon_QT7_AudioNode_H

#include <QtCore/QObject>

#include "backendheader.h"

#include "audioconnection.h"

#include <AudioToolbox/AudioToolbox.h>

#include <AudioUnit/AudioUnit.h>

QT_BEGIN_NAMESPACE

namespace Phonon

{

namespace QT7

{

    class AudioGraph;

    class MediaNodeEvent;

    class MediaNode;

    class MediaNodeConnection{

        MediaNode *source;

        MediaNode *sink;

        int inputPort;

        int outputPort;

    };

    class AudioNode

    {

        public:

            enum ConnectionSide {Source, Sink};

            AudioNode(int maxInput, int maxOutput);

            virtual ~AudioNode();

            virtual void createAndConnectAUNodes();

            virtual void createAudioUnits();

            virtual void setGraph(AudioGraph *audioGraph);

            virtual AUNode getInputAUNode();

            virtual AUNode getOutputAUNode();

            virtual bool fillInStreamSpecification(AudioConnection *connection, ConnectionSide side);

            virtual bool setStreamSpecification(AudioConnection *connection, ConnectionSide side);

            void notify(const MediaNodeEvent *event);

            virtual void mediaNodeEvent(const MediaNodeEvent *event);

            Float64 getTimeInSamples(int timeProperty);

            AudioGraph *m_audioGraph;    

            AudioConnection *m_lastConnectionIn;

            int m_maxInputBusses;

            int m_maxOutputBusses;

        protected:

	        AUNode m_auNode;

            AudioUnit m_audioUnit;

            // Only the following methods needs to

            // be overridden by only_one-audio-unit nodes:

            virtual ComponentDescription getAudioNodeDescription() const;

            virtual void initializeAudioUnit();

        private:

            bool setStreamHelp(AudioConnection *c, int bus, OSType scope, bool fromSource);

    };

}} // namespace Phonon::QT7

QT_END_NAMESPACE

#endif // Phonon_QT7_AudioNode_H