diff -r 000000000000 -r bde4ae8d615e os/mm/devsound/sounddevbt/src/Plugin/HwDevice/Audio/MmfBtPcm16ToImaAdpcm.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/devsound/sounddevbt/src/Plugin/HwDevice/Audio/MmfBtPcm16ToImaAdpcm.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,65 @@
+// 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__