diff -r 000000000000 -r 40261b775718 mmdevicefw/mdf/inc/codecapi/mdfpuloader.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmdevicefw/mdf/inc/codecapi/mdfpuloader.h	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,117 @@
+// Copyright (c) 2005-2009 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:
+//
+
+/**
+ @file
+ @publishedPartner
+ @released
+*/
+
+#ifndef MDFPULOADER_H
+#define MDFPULOADER_H
+
+#include <e32base.h>
+class MMdfInputPort;
+class MMdfOutputPort;
+class CMdfProcessingUnit;
+class MMdfProcessingUnitObserver;
+class TFourCC;
+
+/**
+Utility class used by the HwDevice to load Processing Units.
+*/
+class CMdfPuLoader : public CBase
+	{
+public:
+	/**
+	Constructs an instance of the ECom plugin.
+	@param	aImplementationUid
+			ECom implementation UID.
+	@return	A pointer to the newly constructed object
+	*/
+	inline static CMdfPuLoader* NewL(TUid aImplementationUid);
+	
+	/**
+	Loads a Processing Unit using a UID synchronously.
+	@param	aProcessingUnitObserver
+			The observer for the newly loaded Processing Unit.
+	@param	aImplementationUid
+			ECom implementation UID.
+	@return  A pointer to the newly loaded Processing Unit.
+	*/
+	virtual CMdfProcessingUnit* LoadProcessingUnitL(const MMdfProcessingUnitObserver& aProcessingUnitObserver, 
+		TUid aImplementationUid) = 0;
+
+	/**
+	Loads an audio Processing Unit synchronously.  The Processing Unit is
+	resolved according to the source and destination data types provided.
+	@param	aProcessingUnitObserver
+			The observer for the newly loaded Processing Unit.
+	@param	aSrcDataType
+			The source data type.
+	@param	aDestDataType
+			The destination data type.
+	@return	A pointer to the newly loaded Processing Unit.	   
+	*/
+	virtual CMdfProcessingUnit* LoadProcessingUnitL( const MMdfProcessingUnitObserver& aProcessingUnitObserver, 
+		TFourCC aSrcDataType, TFourCC aDestDataType) = 0;
+	
+
+	/**
+	Loads a video Processing Unit synchronously.  The Processing Unit is
+	resolved according to the source and destination data types provided.
+	@param	aProcessingUnitObserver
+			The observer for the newly loaded Processing Unit.
+	@param	aSrcDataType
+			The source data type.
+	@param	aDestDataType
+			The destination data type.
+	@param	aImplementationType
+			The implementation type. Can be audio, video encoding or video decoding.
+	@return	A pointer to the newly loaded Processing Unit.	   
+	*/
+	virtual CMdfProcessingUnit* LoadProcessingUnitL( const MMdfProcessingUnitObserver& aProcessingUnitObserver, 
+		const TDesC8& aSrcDataType, const TDesC8& aDestDataType, const TUid& aImplementationType) = 0;
+
+	
+	/**
+	Attempts to set-up a tunnel from a given output port to an input port.  
+	The data flow is from the output port to the input port.  This method is synchronous.
+	@param	aOutputPort
+			The output port of the tunnel.
+	@param	aInputPort
+			The input port of the tunnel.
+	@return	An error code indicating if the function call was successful. KErrNone on success, otherwise
+			another of the system-wide error codes.	  
+	*/
+	virtual TInt TunnelSetup(MMdfOutputPort& aOutputPort, MMdfInputPort& aInputPort) = 0;
+	
+	/**
+	Unloads a Processing Unit synchronously.
+	@param	aPu
+			The pointer to the Processing Unit to be unloaded.
+	*/
+	virtual void UnloadProcessingUnit(CMdfProcessingUnit*& aPu) = 0;
+	
+	/**
+	Standard destructor.
+	*/
+	virtual inline ~CMdfPuLoader();
+private:
+	TUid iDtor_ID_Key;
+	};
+
+#include <mdf/mdfpuloader.inl>
+#endif // MDFPULOADER_H