/*

* 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:   

*

*/

#ifndef TMCEMEDIASTATE_H

#define TMCEMEDIASTATE_H

#include <e32std.h>

#include "mcemediadefs.h"

#include "mcesip.h"

class TMceMccComEvent;

class CMceComSession;

class CSdpDocument;

/**

*  Represents MM state 

*

*/

class TMceMediaState

    {

public: // Constructors

    /**

    * Consructor

    */

    TMceMediaState( CMceComSession& aSession );

	virtual ~TMceMediaState();

public: // new functions

    virtual TMceMMState Id() = 0;

    virtual TMceMediaState* CloneL( CMceComSession& aSession ) const;

    virtual void EntryL();

    virtual void Callback();

    void Pushed();

    TInt StackIndex();

    TBool CallbackAllowed();

public: // from mcc

    virtual void MccLinkCreatedL( TMceMccComEvent& aEvent );

    virtual void MccMediaPreparedL( TMceMccComEvent& aEvent );

    virtual void MccMediaStartedL( TMceMccComEvent& aEvent );

    virtual void MccMediaPausedL( TMceMccComEvent& aEvent );

    virtual void MccMediaResumedL( TMceMccComEvent& aEvent );

    virtual void MccError( TInt aError, TMceMccComEvent& aEvent );

public: //from application/server

    virtual TMceSipWarningCode DecodeL( CSdpDocument& aSdpDocument );

    virtual CSdpDocument* EncodeL();

    virtual void UpdateL();

public: 

    virtual TBool NeedToNegotiate( CSdpDocument* aSdpDocument = NULL );

    virtual TBool ConfirmationNeeded();

    virtual TBool ReservationNeeded();

    virtual TMceReturnStatus ReserveL();

    void SetRole( TMceNegotiationRole aRole );

    TMceNegotiationRole Role() const;

protected://state common functions

protected://data

    CMceComSession& iSession;

    TMceNegotiationRole iRole;

    TInt iStackIndex;

    };

#endif //TMceMEDIASTATE_H

// End of File