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_ALAW_TO_PCM16_HW_DEVICE_H__
sl@0: #define __MMF_ALAW_TO_PCM16_HW_DEVICE_H__
sl@0: #include <mmf/server/mmfswcodecwrapper.h>
sl@0: #include "MMFAudioCodecBase.h"
sl@0: #include "MMFAudioALawToS16PcmCodec.h"
sl@0: 
sl@0: const TInt KALawToCM16SrcBufferSize  = 0x1000;
sl@0: const TInt KALawToCM16SinkBufferSize = 0x2000;
sl@0: 
sl@0: /*
sl@0: *
sl@0: * CMMFAlawToPcm16CodecHwDevice 
sl@0: *
sl@0: */
sl@0: class CMMFAlawToPcm16CodecHwDevice : public CMMFSwCodecWrapper
sl@0: 	{
sl@0: public:
sl@0: 	static  CMMFAlawToPcm16CodecHwDevice* NewL();
sl@0: 	virtual CMMFSwCodec& Codec();
sl@0: 	~CMMFAlawToPcm16CodecHwDevice(); 
sl@0: private:
sl@0: 	void ConstructL();
sl@0: 	};
sl@0: 
sl@0: /*
sl@0: *
sl@0: * class CMMFAlawToPcm16Codec coverts ALaw to PCM
sl@0: *  
sl@0: */
sl@0: class CMMFAlawToPcm16Codec : public CMMFSwCodec
sl@0: 	{
sl@0: public:
sl@0: 	virtual TCodecProcessResult ProcessL(const CMMFBuffer& aSource, CMMFBuffer& aDest);
sl@0: 	virtual TUint SourceBufferSize() {return KALawToCM16SrcBufferSize;};
sl@0: 	virtual TUint SinkBufferSize() {return KALawToCM16SinkBufferSize;};
sl@0: private:
sl@0: 	TBool CheckPreconditions( const CMMFDataBuffer* aSrcBuffer, CMMFDataBuffer* aDestBuffer );
sl@0: 	TInt AlawSampleToPcm(TUint8 aAlaw);
sl@0: private:
sl@0: 	TMMFAudioALawToS16PcmCodec iAlawTo16Pcm;
sl@0: 	};
sl@0: 
sl@0: #endif //__MMF_ALAW_TO_PCM16_HW_DEVICE_H__
sl@0: