/*

* Copyright (c) 2002-2003 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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:

*

* Description:

*

*/

#ifndef __MMF_PCM16_TO_IMAADPCM_HW_DEVICE_H__

#define __MMF_PCM16_TO_IMAADPCM_HW_DEVICE_H__

#include <mmf/server/mmfswcodecwrapper.h>

#include "MMFAudioCodecBase.h"

#include "MMFAudioCodec.h"

#include "MMFAudioPcm16ToImaAdpcmCodec.h"

const TInt KPCM16ToImaSrcBufferSize  = 0x3F20;

const TInt KPCM16ToImaSinkBufferSize = 0x1000;

const TUint KSourceFrameSize = KImaAdpcmSamplesPerBlock * 2;

const TUint KCodedFrameSize  = KImaAdpcmBlockAlign;

/*

*

* class CMMFPcm16ToMulawHwDevice 

*

*/

class CMMFPcm16ToImaAdpcmHwDevice : public CMMFSwCodecWrapper

	{	

public:

	static  CMMFPcm16ToImaAdpcmHwDevice* NewL();

	virtual CMMFSwCodec& Codec();

	~CMMFPcm16ToImaAdpcmHwDevice(); 

private:

	void ConstructL();

	};

/*

*

* class CMMFPcm16ToALawCodec coverts Pcm16 to Imaad

*  

*/

class CMMFPcm16ToImaAdpcmCodec : public CMMFSwCodec

	{

public:

	virtual TCodecProcessResult ProcessL(const CMMFBuffer& aSource, CMMFBuffer& aDest);

	virtual TUint SourceBufferSize() {return KPCM16ToImaSrcBufferSize;};

	virtual TUint SinkBufferSize() {return   KPCM16ToImaSinkBufferSize;};

private:

	virtual void ResetL();

	void ProcessBuffers(const CMMFDataBuffer& aSource, CMMFDataBuffer& aDestination, CMMFSwCodec::TCodecProcessResult& aResult );

	TBool BuffersStatus( const CMMFDataBuffer* source, const CMMFDataBuffer* destination );

private:

	TMMFAudioPcm16ToImaAdpcmCodec iPcm16ToImaAdpcm;

	TMMFAudioPcm16ToImaAdpcmCodec i16PcmToImaAdpcm;

	TUint iLastFrameNumber;

	};

#endif //__MMF_PCM16_TO_IMAADPCM_HW_DEVICE_H__