--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtengines/videoteleng/Inc/Extensions/CVtEngExtensions.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,116 @@
+/*
+* Copyright (c) 2006 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:  Videoteleng API extension configuration
+*
+*/
+
+
+#ifndef CVTENGEXTENSIONS_H
+#define CVTENGEXTENSIONS_H
+
+// INCLUDES
+#include <e32base.h>
+#include "vtengcommands.h"
+
+// CONSTANTS AND MACROS
+const TInt KExtensionGranularity = 1;
+
+// FORWARD DECLARATIONS
+class CVtEngExtensionBase;
+class CVtEngCameraPreferences;
+class CVtEngOperation;
+class CVtEngMediaHandler;
+
+// CLASS DECLARATION
+
+/**
+*  Video telephony extension handling.
+*
+*  @lib videoteleng.lib
+*  @since S60 v3.2
+*/
+NONSHARABLE_CLASS(CVtEngExtensions): public CBase
+    
+    {
+    public: // Constructor and destructor.
+
+        /**
+        * Symbian two-phase constructor.
+        * @return engine extension instance
+        */
+        static CVtEngExtensions* NewL();
+
+        /**
+        * Destructor.
+        */
+        ~CVtEngExtensions();
+
+    public: 
+        
+        /**
+        * Gets client interface from certain extension
+        * @param aInterfacePtr a pointer to client IF pointer
+        * @param aUid requested client IF extension UID
+        * @param aHandler a handle to media handler 
+        */
+        TInt GetClientInterface( TAny** aInterfacePtr, 
+        	const TUid& aUid , CVtEngMediaHandler& aHandler );
+        
+        /**
+        * Offers operation for extensions
+        * @param aOp operation pointer
+        * @return TBool value indicating if any of exsisting extension
+        * was able to handle operation 
+        */
+        TBool OfferOperationL( CVtEngOperation* aOp );
+        
+        /**
+        * Validates extension command 
+        * @param aCommandId command ID (TInt)
+        * @return TBool value indicating if any of exsisting extension
+        * was able to validate operation 
+        */
+        TBool ValidateCommand( const TVtEngCommandId aCommandId );
+        
+    private: 
+
+        /**
+        * C++ default constructor.
+        */
+        CVtEngExtensions();
+
+        /**
+        * Symbian constructor that may leave.
+        */
+        void ConstructL();
+        
+        /**
+        * Creates certain extension 
+        */
+        CVtEngExtensionBase* CreateExtensionsL( const TUid& aUid, 
+        	CVtEngMediaHandler& aHandler );
+        
+        /**
+        * Search extensions using UID 
+        */
+        TInt LookupExtensions( const TUid& aUid) const;
+    
+    private:
+        
+        // Extension handle container
+        RPointerArray <CVtEngExtensionBase> iExtensionArray;        
+        
+    };
+
+#endif //CVTENGEXTENSIONS_H