--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsound/a3fdevsound/inc/MmfDevSoundCustomInterfaceExtensions.h	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,103 @@
+// MmfDevSoundCustomInterfaceExtensions.h
+
+// Copyright (c) 2007-2009 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 MMFDEVSOUNDCUSTOMINTERFACEEXTENSIONS_H
+#define MMFDEVSOUNDCUSTOMINTERFACEEXTENSIONS_H
+
+//INCLUDES
+#include <mmf/common/mmfcontrollerframework.h>
+#include <mmf/common/mcustomcommand.h>
+#include <mmf/common/mcustominterface.h>
+#include <a3f/mmfdevsoundcustominterfaceextensions.hrh>
+
+//CLASS DECLARATION	
+/**
+Mixins for client-side Custom Interface Extension.
+*/
+class MDevSoundCIClientExtension
+	{
+public:
+	/**
+	Must be called after successfully creating ECOM implementation.
+	@param aCustomCommand  Reference to implementation of CI Extension Support interface.
+	@return an error code KErrNone if successful, otherwise one of the system wide error codes.
+	*/
+	virtual TInt Setup(MCustomCommand& aCustomCommand) = 0;
+	/**
+	Called to obtain a pointer to the Custom Interface Extension.
+	This allows a Custom or Extension Interface, that uses a pattern different to the standard Custom Interface, to be implemented.
+	Note that ownership of the interface will depend on the UID.
+	@param aUid UID of the required interface.
+	@param aInterface Used to return pointer to the interface. Must be NULL if no matching interface.
+	@return an error code KErrNone if successful, otherwise one of the system wide error codes.
+	*/
+	virtual TInt CustomInterfaceExtension(TUid aUid, TAny*& aInterface) = 0;
+	/**
+	Equivalent to destructor. Called to destroy plugin.
+	*/
+	virtual void Release() = 0;
+	/**
+	Called by framework during construction (after Setup) and is used to pass a destructor key for ECom.
+	The passed UID must be retained for the lifetime of the plugin and, on a subsequent call to Release(),
+	REComSession::DestroyedImplementation() must be called by the plugin, using the stored UID.
+	@param aDestructorKey The Uid returned by REComSession::CreateImplementationL() or similar.
+	*/
+	virtual void PassDestructorKey(TUid aDestructorKey) = 0;
+	};
+
+//CLASS DECLARATION
+/**
+Mixins for server-side Custom Interface Extension.
+*/
+class MDevSoundCIServerExtension
+	{
+ public:
+	/**
+	Will be called by framework after successfully creating ECOM implementation.
+	@param aInterface Reference to implementation of CI Extension Support interface.
+	@return KErrNone if successful. System wide error on failure.
+	*/
+	virtual TInt Setup(MCustomInterface& aInterface) = 0;
+	/**
+	Called by the Multimedia framework when a message is received.
+	The implementation of this method is responsibile for completing the message.
+	@param aMessage Message received by MM framework
+	@return KErrNone if successfully handled. KErrNotSupported if message is not handled.
+	@leave System wide error.
+	*/
+	virtual TInt HandleMessageL(const RMmfIpcMessage& aMessage) = 0;
+	/**
+	Equivalent to destructor. Called to destroy plugin.
+	*/
+	virtual void Release() = 0;
+	/**
+	Called by framework during construction (after Setup) and is used to pass a destructor key for ECom.
+	The passed UID must be retained for the lifetime of the plugin and, on a subsequent call to Release(),
+	REComSession::DestroyedImplementation() must be called by the plugin, using the stored UID.
+	@param aDestructorKey The Uid returned by REComSession::CreateImplementationL() or similar.
+	*/
+	virtual void PassDestructorKey(TUid aDestructorKey) = 0;
+	};
+
+
+#endif