--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/omxilcomp/omxilaudioemulator/pcmrenderer/src/rateconvert.h	Thu Sep 02 20:13:57 2010 +0300
@@ -0,0 +1,68 @@
+// 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:
+// include\mmf\utils\rateconvert.h
+// 
+//
+
+#ifndef RATECONVERT_H
+#define RATECONVERT_H
+
+/**
+@internalTechnology
+@file
+*/
+
+#include <e32base.h>
+
+/**
+Base utility class to change the sample rate of audio data in a buffer
+*/
+class CChannelAndSampleRateConverter : public CBase
+	{
+protected:
+	CChannelAndSampleRateConverter();
+	
+public:
+	/*
+	Create a converter that will do rate and channel conversion as requested
+	*/
+	static CChannelAndSampleRateConverter* CreateL(TInt aFromRate,TInt aFromChannels,
+												 TInt aToRate,TInt aToChannels);
+	/**
+	Reads the audio data from the source buffer,
+	converts the number of channels and the sample rate
+	and copies the result to the destination buffer
+
+	@param  aSrcBuffer
+	        The source buffer containing the audio data to convert.
+	@param  aDstBuffer
+	        The destination buffer - assumed big enough
+
+	@return The length of the source buffer that was consumed.
+	*/
+	virtual TInt Convert(const TDesC8& aSrcBuffer, TDes8& aDstBuffer)=0;
+	virtual void Reset()=0;
+
+	/*
+	Indicates what buffer size is required to hold the converted data.
+	Support size of original buffer. 
+	aRoundUpToPower means give next power of 2 size up from raw size.
+	NB. May be bigger than strictly necessary.
+	*/
+	virtual TInt MaxConvertBufferSize(TInt aSrcBufferSize, TBool aRoundUpToPower=EFalse)=0;
+	};
+
+
+#endif
+