/*

* Copyright (c) 2010 Ixonos Plc.

* All rights reserved.

* This component 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 the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - Initial contribution

*

* Contributors:

* Ixonos Plc

*

* Description:  

*

*/

#ifndef __CPROCTIMEESTIMATEAO_H__

#define __CPROCTIMEESTIMATEAO_H__

#include <e32base.h>

#include "AudSong.h"

#include "AudCommon.h"

#include "ProcProcessAO.h"

class CProcProcess;

class CProcTimeEstimateAO : public CActive 

    {

public:

    static CProcTimeEstimateAO* NewL();

    virtual ~CProcTimeEstimateAO();

    /**

    *

    * Starts retrieving audio clip info

    *

    * @param    aFilename        filename of the input file

    * @param    aObserver        observer to be notified of progress

    * @param    aProperties        properties of the input file.

    *                            Needs to be allocated by the caller,                            

    *                            and will filled in as a result of calling

    *                            this function

    * @param    aPriority        priority of the operation

    *

    */

    TBool StartL(const CAudSong* aSong, MAudTimeEstimateObserver& aTEObserver);

    void CancelTimeEstimate();

protected:

    virtual void RunL();

    virtual void DoCancel();

private:

    void ConstructL();

private:

    // C++ constructor

    CProcTimeEstimateAO();

    // processing AC for getting frames

    CProcProcess* iProcessingObject;

    // observer to notify

    MAudTimeEstimateObserver* iTEObserver;

    // song

    const CAudSong* iSong;

    };

#endif