/*

* Copyright (c) 2006-2008 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:    Observer

*

*/

#ifndef M_MEDIA_WRAPPER_OBSERVER_H

#define M_MEDIA_WRAPPER_OBSERVER_H

#include <e32base.h>

/**

 *  Observer interface used to reveice notifications about incoming

 *  connections from sender

 *

 *  Defines source for multiplexer, where Media Wrapper is mounted to

 *

 *  @lib socketmediaconnwrapper.dll

 *  @since S60 v3.2

 */

class MNATFWMediaWrapperObserver

    {

public:

    /**

     * Indicates how sending to user succeed

     *

     * @since S60 v3.2

     * @param aError system-wide error code

     * @return void

     */

    virtual void SendingCompleted( TInt aError ) = 0;

    /**

     * Called after data were sent to wrapper. Delivers it to multiplexer.

     *

     * @since S60 v3.2

     * @param aStreamId an ID for stream the data was received from

     * @param aStreamPortion stream portion which were sent by client

     * @return system-wide error code

     */

    virtual TInt ReceivedFrom( TUint aStreamId, TDes8& aStreamPortion  ) = 0;

    /**

     * Called by socket media wrapper object when local port is already in use.

     * Get new free port.

     *

     * @since   S60 v3.2

     * @param   aPort               New free port

     * @return  void

     */    

    virtual void GetNewFreePort( TUint& aPort ) = 0;

    };

#endif // M_MEDIA_WRAPPER_OBSERVER_H