--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtengines/videoteleng/Inc/Base/CVtEngInitializer.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,239 @@
+/*
+* Copyright (c) 2004 - 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:  Class for initializing the engine gradually.
+*                Active object initializes one "subsystem" on each
+*                round. In case of failure timer is started and
+*                retrial is done after time-out. Uninitialization
+*                is done is one shot.
+*
+*/
+
+
+
+#ifndef CVTENGINITIALIZER_H
+#define CVTENGINITIALIZER_H
+
+//  INCLUDES
+#include    "MVtEngSettingObserver.h"
+#include    <e32base.h>
+#include    <mvtprotocolhandler.h>
+
+// FORWARD DECLARATIONS
+class CVtEngHandlerContainer;
+class CVtEngOperation;
+
+
+/**
+*  Engine initializer.
+*
+*  @lib videoteleng
+*  @since 2.6
+*/
+NONSHARABLE_CLASS( CVtEngInitializer ) :
+    public CActive,
+	public MVtEngSettingObserver
+    {
+    public: // Constructors and destructor
+
+        static CVtEngInitializer* NewL( CVtEngHandlerContainer& aHandlers );
+
+        /**
+        * Destructor.
+        */
+        virtual ~CVtEngInitializer();
+
+    public: // new functions
+
+        /**
+        * Starts initialization process.
+        */
+        void InitializeL( CVtEngOperation& aCallback );
+
+        /**
+        * Cancels initialiation
+        * @return ETrue if CActive::Cancel was called
+        */
+        TBool CancelInit();
+
+        /**
+        * Uninitializes engine.
+        */
+        void Uninitialize( CVtEngOperation& aCallback );
+
+        /**
+        * Gets GetSessionCommand ownership after initialization.
+        * @return CSessionCommand interface.
+        */
+        MVtSessionCommand* GetSessionCommand();
+
+        /**
+        * Returns if engine is initialized.
+        * @return ETrue if initialized
+        */
+        TBool Initialized() const;
+
+		/**
+        * Creates handler for DTMF sending.
+		* @param aH324Config H324 configure interface
+        */
+        void CreateDtmfHandlerL( MVtH324ConfigCommand* aH324Config );
+
+		/**
+		* Gets pointer to comms. Still owns the comms.
+		* @return Pointer to comms.
+		*/		
+        MCommServer* GetVtComms();
+
+    private: // from CActive
+
+        /**
+        * performs one initialization step.
+        */
+        void RunL();
+
+        /**
+        * Cancels initialization process.
+        */
+        void DoCancel();
+
+        /**
+        * Handles error in the process.
+        * @return always returns KErrNone
+        */
+        TInt RunError( TInt aError );
+
+    public: // from MVtEngSettingObserver
+        virtual void HandleSettingChangedL( 
+            CVtEngSettings::TSettingId aId, 
+            const TDesC& aValue );
+            
+
+    private: // Constructors
+
+        /**
+        * c++ constructor
+        */
+        CVtEngInitializer( CVtEngHandlerContainer& aHandlers );
+
+        /**
+        *
+        */
+        void ConstructL();
+
+    private:
+
+        enum TProcess
+            {
+            // Go to next step
+            EContinue,
+            // Reset engine
+            EReset,
+            // Retry current step when failed.
+            ERetry
+            };
+
+    private: // new functions
+
+        /**
+        * Reads bit reversal information from locally variated flags.
+        * @return ETrue if reversed.
+        */
+        TBool BitReversalUsed();
+
+        /**
+        * Proceeds to next step or starts retrial of
+        * previously failed step.
+        */
+        void ContinueOrRetry( const TProcess aOperation );
+
+        /**
+        * Notifies observer on initialization completion.
+        */
+        void Notify( const TInt aResult );
+
+        /**
+        * Callback for retrial timer.
+        */
+        static TInt HandleTimer( TAny* aAny );
+
+        /**
+        * Handles retrial timer expiration.
+        */
+        void DoHandleTimer();
+                  
+        TBool ActivateAndSignal( TInt aSignalValue );
+        
+    private:
+
+
+        /**
+        * Initialization steps
+        */
+        enum TVtEngInitializationSteps
+            {
+            EInitNone,
+            EInitSession,
+            EInitMedia,
+            EInitProto,
+			EInitDataportCompleted,
+            EInitComplete,
+            EResetMedia,
+            EResetMediaPhase2
+            };
+
+        /**
+        * Dataport information handling flags.
+        */
+        enum TVtEngDataportInformationFlags
+            {
+            EDataportListened = 0x01,
+            EDataportReceived = 0x02
+            };
+
+    private:
+
+        // handler container
+        CVtEngHandlerContainer& iHandlers;
+
+        // Current (un)initialization step
+        TInt                    iStep;
+
+        // Operation to be notified on completion
+        CVtEngOperation*        iCallback;
+
+        // Retrial count
+        TInt                    iRetrials;
+
+        // Retrial timer
+        CPeriodic*              iTimer;
+
+        // Protocol Session Engine
+		MVtSessionCommand* iSessionCommand;
+
+        // Protocol Comms Server
+        MCommServer*      iComms;
+
+        // Has subscription been made for dataport name.
+        TInt iDataportHandled;
+
+		// If MediaHandler has taken ownership of 2-way, this is true,
+		// otherwise false.
+		TBool iOwnershipInMH;
+
+    };
+
+
+#endif      // CVTENGINITIALIZER_H
+
+// End of File