/*

* 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 __CPROCAMRFRAMEHANDLER_H__

#define __CPROCAMRFRAMEHANDLER_H__

#include <e32base.h>

#include <f32file.h>

#include "AudCommon.h"

#include "ProcConstants.h"

#include "ProcFrameHandler.h"

class CProcAMRFrameHandler : public CProcFrameHandler 

    {

public:

    /*

    * Symbian constructors and a destructor

    */

    static CProcAMRFrameHandler* NewL();

    static CProcAMRFrameHandler* NewLC();

    virtual ~CProcAMRFrameHandler();

    // From base class CProcFrameHandler

    virtual TBool ManipulateGainL(const HBufC8* aFrameIn, HBufC8*& aFrameOut, TInt8 aGain);

    virtual TBool GetGainL(const HBufC8* aFrame, RArray<TInt>& aGains, TInt& aMaxGain) const;

    virtual TBool GetNormalizingMargin(const HBufC8* aFrame, TInt8& aMargin) const;

private:

    // constructL

    void ConstructL();

    // c++ constructor

    CProcAMRFrameHandler();

    // internal function to read AMR gains

    TBool GetAMRGains(const HBufC8* aFrame, RArray<TInt>& aGains, TInt& aMaxGain) const;

    // gets the length of the next frame based on mode myte

    TInt GetNextFrameLength(const HBufC8* aFrame, TInt aPosNow);

    TBool GetGPGains(const HBufC8* aFrame, RArray<TInt>& aGains) const;

    // member variables for energy calculation

    mutable TReal iPreviousEnergy;

	mutable TReal iPreviousRn[4];

    };

#endif