--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtengines/videoteleng/Inc/State/CVtEngDtmfState.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,246 @@
+/*
+* 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:  DTMF state classes.
+*
+*/
+
+
+
+#ifndef CVTENGDTMFSTATE_H
+#define CVTENGDTMFSTATE_H
+
+//  INCLUDES
+#include    <e32base.h>
+#include    <mvtprotocolhandler.h>
+#include    "TVtEngDtmfTone.h"
+#include    "MVtEngDtmfHandler.h"
+
+
+
+// CLASS DECLARATION
+
+/**
+*  Base class for DTMF states.
+*
+*  @lib videoteleng
+*  @since 2.6
+*/
+NONSHARABLE_CLASS( CVtEngDtmfState ) : public CBase
+    {
+    public:
+        /**
+        * C++ constructor.
+        * @param aDtmfHandler 
+        * @param aH324Config H324 configure interface 
+        */
+        CVtEngDtmfState( 
+            MVtEngDtmfHandler& aDtmfHandler,
+            MVtH324ConfigCommand& aH324Config );
+
+    public: // new methods
+
+        /**
+        * Sends a DTMF tone. Derived classes implement this
+        * and each vary in behavior.
+        * @param aTone tone to send
+        */
+        virtual void SendDtmfL( const TVtEngDtmfTone& aTone ) = 0;
+
+        /**
+        * Handles callback about DTMF sending. Releases pv2way dtmf instance.
+        * @param aError Symbian OS error code
+        */
+        virtual void DtmfSendCompleteL( TInt aError );
+
+    protected: // new methods
+        /**
+        * Sends tone and changes state
+        * @param aDtmf tone to send
+        * @param aNewState new DTMF state
+        */
+        void DoSendAndActivateStateL( 
+            const TVtEngDtmfTone& aDtmf,
+            MVtEngDtmfHandler::TVtEngDtmfState aNewState );
+
+    protected: // member data
+
+        // DTMF handler
+        MVtEngDtmfHandler& iDtmfHandler;
+
+        // H324 configure interface
+        MVtH324ConfigCommand& iH324Config;
+    };
+
+/**
+*  Idle DTMF state class
+*
+*  @lib videoteleng
+*  @since 2.6
+*/
+NONSHARABLE_CLASS( CVtEngDtmfIdle ) : public CVtEngDtmfState
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Two-phased constructor.
+        * @param aDtmfHandler 
+        * @param aH324Config H324 configure interface
+        */
+        static CVtEngDtmfState* NewL( 
+            MVtEngDtmfHandler& aDtmfHandler,
+            MVtH324ConfigCommand& aH324Config );
+
+        /**
+        * Destructor.
+        */
+        virtual ~CVtEngDtmfIdle();
+
+    public: // From CVtEngStateBase
+        
+        /**
+        * Sends DTMF tone and changes state to "sending".
+        * @param aTone tone to send
+        */
+        virtual void SendDtmfL( const TVtEngDtmfTone& aTone );
+
+        /**
+        * @see CVtEngDtmfState
+        */
+        virtual void DtmfSendCompleteL( TInt aError );
+
+    private: // constructors
+
+        /**
+        * C++ constructor.
+        * @param aDtmfHandler 
+        * @param aH324Config H324 configure interface
+        */
+        CVtEngDtmfIdle( 
+            MVtEngDtmfHandler& aDtmfHandler,
+            MVtH324ConfigCommand& aH324Config );
+    };
+
+/**
+*  Sending DTMF state class
+*
+*  @lib videoteleng
+*  @since 2.6
+*/
+NONSHARABLE_CLASS( CVtEngDtmfSending ) : public CVtEngDtmfState
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Two-phased constructor.
+        * @param aDtmfHandler 
+        * @param aH324Config H324 configure interface
+        */
+        static CVtEngDtmfState* NewL( 
+            MVtEngDtmfHandler& aDtmfHandler,
+            MVtH324ConfigCommand& aH324Config );
+
+        /**
+        * Destructor.
+        */
+        virtual ~CVtEngDtmfSending();
+
+    public: // From CVtEngStateBase
+        
+        /**
+        * Changes state to "buffered".
+        * @param aTone tone to send
+        */
+        virtual void SendDtmfL( const TVtEngDtmfTone& aTone );
+
+        /**
+        * @see CVtEngDtmfState
+        */
+        virtual void DtmfSendCompleteL( TInt aError );
+
+    private: // constructor
+
+        /**
+        * C++ constructor.
+        * @param aDtmfHandler 
+        * @param aH324Config 
+        */
+        CVtEngDtmfSending( 
+            MVtEngDtmfHandler& aDtmfHandler,
+            MVtH324ConfigCommand& aH324Config );
+
+    };
+
+/**
+*  Buffered DTMF state class
+*
+*  @lib videoteleng
+*  @since 2.6
+*/
+NONSHARABLE_CLASS( CVtEngDtmfBuffered ) : public CVtEngDtmfState
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Two-phased constructor.
+        * @param aDtmfHandler 
+        * @param aH324Config H324 configure interface 
+        */
+        static CVtEngDtmfState* NewL( 
+            MVtEngDtmfHandler& aDtmfHandler,
+            MVtH324ConfigCommand& aH324Config );
+
+        /**
+        * Destructor.
+        */
+        virtual ~CVtEngDtmfBuffered();
+
+    public: // From CVtEngStateBase
+        
+        /**
+        * Buffers DTMF tone that is sent when previous
+        * tones in buffer are sent.
+        * @param aTone tone that is added to the buffer
+        */
+        virtual void SendDtmfL( const TVtEngDtmfTone& aTone );
+
+        /**
+        * @see CVtEngDtmfState
+        */
+        virtual void DtmfSendCompleteL( TInt aError );
+
+    private: // constructors
+
+        /**
+        * C++ constructor.
+        * @param aDtmfHandler 
+        * @param aH324Config 
+        */
+        CVtEngDtmfBuffered( 
+            MVtEngDtmfHandler& aDtmfHandler,
+            MVtH324ConfigCommand& aH324Config );
+
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        void ConstructL();
+
+    private: // Member data
+
+        // Buffered DTMF tones.
+        CArrayFixFlat<TVtEngDtmfTone>* iTones;
+    };
+
+#endif      // CVTENGDTMFSTATE_H
+            
+// End of File