diff -r 000000000000 -r bde4ae8d615e os/mm/devsoundextensions/ciextnfactoryplugins/ciextnclientplugin/src/ciextnclientplugin.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/devsoundextensions/ciextnfactoryplugins/ciextnclientplugin/src/ciextnclientplugin.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,114 @@
+/*
+* Copyright (c) 2002-2008 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:   Header definition of plugin classes implementing devsound client
+*                custom interface extension.
+*
+*/
+
+
+
+#ifndef CIEXTNCLIENTPLUGIN_H
+#define CIEXTNCLIENTPLUGIN_H
+
+// Include files
+#include <e32base.h>
+#include <a3f/mmfdevsoundcustominterfaceextensions.h>
+
+// Forward declarations
+class MCIFactoryIntfc;
+
+/**
+ *  Plugin class implementing DevSound CI client Extension
+ *
+ *  An instance of this class is created when DevSound is created. When client
+ *  calls CMMFDevSound::CustomInterface() function with UID that is not supported
+ *  by platform version of A3F DevSound, the request is then forwarded to this
+ *  plugin.
+ *
+ *  Only one instance of this plugin can exist in the system.
+ *
+ *  This class is intended to be used only by DevSound client implementation.
+ *
+ *  @since S60 v3.2
+ *
+ */
+class CCIExtnClientPlugin : public CBase,
+                            public MDevSoundCIClientExtension
+    {
+public:
+
+    /**
+     * Two-phased constructor.
+     * Called by ECom framework.
+     */
+    static MDevSoundCIClientExtension* NewL();
+
+    /**
+    * Destructor.
+    */
+    ~CCIExtnClientPlugin();
+
+    // From MDevSoundCIClientExtension begins
+    // Called by framework when plugin is constructed
+    TInt Setup( MCustomCommand& aCustomCommand );
+    // Called by framework forwarding request to create a custom interface
+    TInt CustomInterfaceExtension( TUid aUid, TAny*& aInterface );
+    // Called by framework when plugin is to be deleted
+    void Release();
+    // Called by framework after plugin is created
+    void PassDestructorKey( TUid aDestructorKey );
+    // From MDevSoundCIClientExtension ends
+
+private:
+    /**
+     * Constructor.
+     */
+    CCIExtnClientPlugin();
+
+    /**
+     * Second phase constructor.
+     */
+    void ConstructL();
+
+    /**
+     * Initializes factory plugins list.
+     *
+     * Leaves on error.
+     */
+    void InitializeFactoryPluginsL();
+
+private:
+
+    /**
+     * Reference to MCustomCommand interface
+     * Not own.
+     */
+    MCustomCommand*                 iMCustomCommand;
+
+    /**
+     * Uid of the plugin object passed by the framework via PassDestructorKey()
+     */
+    TUid                            iDestructorKey;
+
+    /**
+     * List of factory plugins. When framework calls
+     * CustomInterfaceExtension() function, the request will be forwarded to each
+     * factory plugin in this list until it is handled.
+     *
+     * Own.
+     */
+      RPointerArray<MCIFactoryIntfc>  iMCIFactoryIntfcList;
+    };
+
+#endif // CIEXTNCLIENTPLUGIN_H