/*

* Copyright (c) 2005 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:    implementation

*

*/

#ifndef MSRTPSTREAMINCONTEXT_H

#define MSRTPSTREAMINCONTEXT_H

#include <e32std.h>

// CLASS DECLARATION

/**

* A context for CSRTPStreamIn states. Defines the states for incoming stream.

*

*  @lib n/a

*/

class MSRTPStreamInContext

	{

	public: // Enumerations

        /** Subscription states */

        enum TContextInState 

            {

            /* Not Initialized, no calls made for this stream yet,  */

			ESRTPStreamInUninitialized=0,

			/**  Use "late binding" of SSRC, that is, */

			/** read SSRC from the packet */

			ESRTPStreamInLateBinding=1,			          

            /** Normal, stream initialized, use the SSRC given from user */

			ESRTPStreamInNormal=2,

			/** Not a real state. Upper limit for the number of states */

			EMaxStates=3

            };

    public: // New functions

        /*

        * Virtual function for changing state of the current 

        * receiver stream (for RTP)

        * Implemented in CSRTPStreamIn

        * @param aNewState new RTP state which stream is changed to

        */

        virtual void ChangeRTPState(TContextInState aNewState) = 0;

        /*

        * Virtual function for changing state of the current 

        * receiver stream (for RTCP)

        * Implemented in CSRTPStreamIn

        * * @param aNewState new RTCP state which stream is changed to

        */

        virtual void ChangeRTCPState(TContextInState aNewState) = 0;

	};

#endif  //MSRTPSTREAMINCONTEXT_H