// Copyright (c) 2002-2009 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_BT_PCM16_TO_IMAADPCM_HW_DEVICE_H__

 #define __MMF_BT_PCM16_TO_IMAADPCM_HW_DEVICE_H__

 #include <mmfbtswcodecwrapper.h>

 #include "MMFAudioCodecBase.h"

 #include "MmfBtAudioCodec.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_BT_PCM16_TO_IMAADPCM_HW_DEVICE_H__