--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsound/devsoundrefplugin/src/swcodecwrapper/mmfSwCodecConvertDataPath.h	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,100 @@
+// Copyright (c) 2003-2009 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 __MMFSWCODECCONVERTDATAPATH_H__
+#define __MMFSWCODECCONVERTDATAPATH_H__
+
+#include <e32base.h>
+
+#include "mmfSwCodecDataPath.h"
+
+/**
+ *  Derived class for convert datapath internal to the Sw codec wrapper
+ *  @internalComponent
+ */
+class CMMFSwCodecConvertDataPath : public CMMFSwCodecDataPathX
+	{ 
+public:	
+	static CMMFSwCodecConvertDataPath* NewL();
+	virtual ~CMMFSwCodecConvertDataPath(); 
+	virtual TInt SetObserver(MMMFHwDeviceObserver &aHwObserver);
+	virtual TInt AddCodec(CMMFSwCodec& aCodec);
+	virtual TInt Start();
+	virtual void Stop();
+	virtual void Pause();
+	virtual void BufferFilledL(CMMFDataBuffer& aBuffer);
+	virtual void BufferEmptiedL(const CMMFDataBuffer& aBuffer);	
+	virtual void SoundDeviceException(TInt aError);
+	virtual RMdaDevSound& Device();
+	void FillSourceBufferL();
+	void FillSinkBufferL();
+	void EmptySinkBufferL();
+private:	
+	CMMFSwCodecConvertDataPath() {};
+	void ConstructL();	
+private: 
+	/**
+     * Private class for the convert datapath that is an active object
+	 * used to drive the conversion.  This class performs the main data transfer
+	 * between the source and the sink.
+     * This is done in a separate class as opposed to CMMFSwCodecConvertDataPath
+     * because the class needs to be an active object to avoid recursive call stacks
+     * in cases where the source and sink are not active objects - which is
+     * the case with descriptors.  Making CMMFSwCodecConvertDataPath derive
+     * from CActive is less desirable as it would involve multiple inheretence
+     * @internalComponent
+     */
+	class CDataPathConverter : public CActive
+	{
+	public:
+		enum TConvertState
+		{
+		EIdle,
+		EFillingSourceBuffer,
+		EFillingSinkBuffer,
+		EEmptyingSinkBuffer
+		};
+	public:
+		CDataPathConverter(CMMFSwCodecConvertDataPath& aParent, TInt aPriority);
+		~CDataPathConverter();
+		void Start();
+		void BufferFilledL(CMMFDataBuffer& aBuffer);
+		void BufferEmptiedL(CMMFDataBuffer& aBuffer);
+		void ChangeConvertState(TConvertState aNewConvertState);
+		//CActive
+		virtual void RunL();
+		virtual TInt RunError(TInt aError);
+		virtual void DoCancel();
+	private:	
+		void FillSourceBufferL();
+		void FillSinkBufferL();
+		void EmptySinkBufferL();
+	private:
+		TConvertState iConvertState;
+		CMMFSwCodecConvertDataPath& iParent;
+		CMMFDataBuffer* iSourceBuffer;
+	};
+private: 
+	CDataPathConverter* iDataPathConverter;
+	CMMFDataBuffer* iSourceBuffer;
+	CMMFDataBuffer* iSinkBuffer;
+	TBool iNoMoreSourceData;
+	TUint iSinkBufferSize;
+	TUint iSourceBufferSize;
+	RMdaDevSound iDummyDevSound;//don't need a devsound for convert
+	};
+
+#endif
+