/*

 * Name        : Accelerometer.h

 * Description : Accelerometer helper class

 * Project     : This file is part of OpenMAR, an Open Mobile Augmented Reality browser

 * Website     : http://OpenMAR.org

 *

 * Copyright (c) 2010 David Caabeiro

 *

 * All rights reserved. This program and the accompanying materials are made available 

 * under the terms of the Eclipse Public License v1.0 which accompanies this 

 * distribution, and is available at http://www.eclipse.org/legal/epl-v10.html

 *

 */

#ifndef ACCELEROMETER_H_

#define ACCELEROMETER_H_

#include "Vector3d.h"

#include <SensrvDataListener.h>

class CSensrvChannel;

/**

 * @brief Wrapper class over sensor channel to retrieve data from 3-axis accelerometer

 * 

 * This class also implements a simple bandpass filter

 */

class CAccelerometer : public CBase, 

            public MSensrvDataListener

{

public:

    static CAccelerometer* NewL();

    ~CAccelerometer();

protected:

    CAccelerometer();

    void ConstructL();

public:

    void StartL();

    void Stop();

    const Vector3d GetValue() const { return Vector3d(iX1, iY1, iZ1); }

protected:

    // From MSensrvDataListener

    void DataReceived(CSensrvChannel& aChannel, TInt aCount, TInt aDataLost);

    void DataError(CSensrvChannel& aChannel, TSensrvErrorSeverity aError);

    void GetDataListenerInterfaceL(TUid aInterfaceUid, TAny*& aInterface);

private:

    CSensrvChannel* iSensorChannel;

    TReal iX1;

    TReal iY1;

    TReal iZ0;

    TReal iZ1;

    TReal iZ2;

};

#endif