sl@0: /*
sl@0: * Copyright (c) 2002-2003 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:
sl@0: *
sl@0: */
sl@0: 
sl@0: #ifndef __MMF_PCM16_TO_IMAADPCM_HW_DEVICE_H__
sl@0: #define __MMF_PCM16_TO_IMAADPCM_HW_DEVICE_H__
sl@0: 
sl@0: #include <mmf/server/mmfswcodecwrapper.h>
sl@0: #include "MMFAudioCodecBase.h"
sl@0: #include "MMFAudioCodec.h"
sl@0: #include "MMFAudioPcm16ToImaAdpcmCodec.h"
sl@0: 
sl@0: const TInt KPCM16ToImaSrcBufferSize  = 0x3F20;
sl@0: const TInt KPCM16ToImaSinkBufferSize = 0x1000;
sl@0: const TUint KSourceFrameSize = KImaAdpcmSamplesPerBlock * 2;
sl@0: const TUint KCodedFrameSize  = KImaAdpcmBlockAlign;
sl@0: 
sl@0: /*
sl@0: *
sl@0: * class CMMFPcm16ToMulawHwDevice 
sl@0: *
sl@0: */
sl@0: class CMMFPcm16ToImaAdpcmHwDevice : public CMMFSwCodecWrapper
sl@0: 	{	
sl@0: public:
sl@0: 	static  CMMFPcm16ToImaAdpcmHwDevice* NewL();
sl@0: 	virtual CMMFSwCodec& Codec();
sl@0: 	~CMMFPcm16ToImaAdpcmHwDevice(); 
sl@0: private:
sl@0: 	void ConstructL();
sl@0: 	};
sl@0: 
sl@0: /*
sl@0: *
sl@0: * class CMMFPcm16ToALawCodec coverts Pcm16 to Imaad
sl@0: *  
sl@0: */
sl@0: class CMMFPcm16ToImaAdpcmCodec : public CMMFSwCodec
sl@0: 	{
sl@0: public:
sl@0: 	virtual TCodecProcessResult ProcessL(const CMMFBuffer& aSource, CMMFBuffer& aDest);
sl@0: 	virtual TUint SourceBufferSize() {return KPCM16ToImaSrcBufferSize;};
sl@0: 	virtual TUint SinkBufferSize() {return   KPCM16ToImaSinkBufferSize;};
sl@0: private:
sl@0: 	virtual void ResetL();
sl@0: 	void ProcessBuffers(const CMMFDataBuffer& aSource, CMMFDataBuffer& aDestination, CMMFSwCodec::TCodecProcessResult& aResult );
sl@0: 	TBool BuffersStatus( const CMMFDataBuffer* source, const CMMFDataBuffer* destination );
sl@0: private:
sl@0: 	TMMFAudioPcm16ToImaAdpcmCodec iPcm16ToImaAdpcm;
sl@0: 	TMMFAudioPcm16ToImaAdpcmCodec i16PcmToImaAdpcm;
sl@0: 	TUint iLastFrameNumber;
sl@0: 	};
sl@0: 
sl@0: #endif //__MMF_PCM16_TO_IMAADPCM_HW_DEVICE_H__