diff -r 000000000000 -r bde4ae8d615e os/mm/devsound/sounddevbt/src/Plugin/HwDevice/Audio/MmfBtPcm16ToPcm16HwDevice.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/devsound/sounddevbt/src/Plugin/HwDevice/Audio/MmfBtPcm16ToPcm16HwDevice.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,71 @@
+// 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:
+// src\plugin\Hwdevice\audio\MmfBtPcm16ToPcm16HwDevice.h
+// 
+//
+
+#ifndef __MMF_BT_PCM16_TO_PCM16_HW_DEVICE_H__
+#define __MMF_BT_PCM16_TO_PCM16_HW_DEVICE_H__
+#include <mmfbtswcodecwrapper.h>
+#include <mdasound.h>
+
+#include "../../../swcodecwrapper/mmfBtSwCodecDataPath.h"
+
+//note we need to keep this buffer at 8K as the tone utility expects 8K
+const TInt KPCM16ToPCM16BufferSize = 0x2000;
+const TInt KDevSoundMinFrameSize = 0x800; //2K
+const TInt KDevSoundMaxFrameSize = 0x4000;  //16K
+const TInt KDevSoundDeltaFrameSize = 0x800; //2K
+const TInt KDevSoundFramesPerSecond = 4;
+
+/*
+*
+* class CMMFPcm16ToPcm16HwDevice
+*
+*/
+class CMMFPcm16ToPcm16HwDevice : public CMMFSwCodecWrapper
+	{
+public:
+	static  CMMFPcm16ToPcm16HwDevice* NewL();
+	virtual CMMFSwCodec& Codec();
+	~CMMFPcm16ToPcm16HwDevice(); 
+
+	TUint CalculateBufferSize();
+private:
+	void ConstructL();
+	};
+
+/*
+*
+* class CMMFPcm16ToPcm16Codec converts Pcm16 to pcm16
+*
+*/
+class CMMFPcm16ToPcm16Codec : public CMMFSwCodec
+	{
+public:
+	virtual TCodecProcessResult ProcessL(const CMMFBuffer& /*aSource*/, CMMFBuffer& /*aDest*/);
+//	virtual TUint SourceBufferSize() {return KPCM16ToPCM16BufferSize;};
+//	virtual TUint SinkBufferSize() {return KPCM16ToPCM16BufferSize;};
+	virtual TUint SourceBufferSize();
+	virtual TUint SinkBufferSize();
+	virtual TBool IsNullCodec() {return ETrue;};
+
+	void SetHwDevice(CMMFPcm16ToPcm16HwDevice* aHwDevice);
+private:
+	TUint iBufferSize;
+	CMMFPcm16ToPcm16HwDevice* iHwDevice;
+	};
+
+#endif //__MMF_BT_PCM16_TO_PCM16_HW_DEVICE_H__
+