/*

* Copyright (c) 2007-2008 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 for media source(s)

*

*/

#ifndef M_MNCMMEDIASOURCEOBSERVER_H

#define M_MNCMMEDIASOURCEOBSERVER_H

#include <e32base.h>

/**

 *  Observer for media source(s)

 *

 *  Used by CNcmConnectionMultiplexer for receiving wrapper sending

 *  error notifies

 *

 *  @lib connectionmux.lib

 *  @since S60 v3.2

 */

class MNcmMediaSourceObserver

    {

public:

    /**

     * Called by Media Source after wrapper has had sending error

     *

     * @since   S60 v3.2

     * @param   aStreamId           The ID identifying stream   

     * @param   aError              The error code

     * @return  void

     */ 

    virtual void WrapperSenderError( TUint aStreamId, TInt aError ) = 0;

    /**

     * Called by Media Source if current local port is already in use.

     * Gets new free port.

     *

     * @since   S60 v3.2

     * @param   aStreamId           The ID identifying stream   

     * @param   aPort               New free port

     * @return  void

     */     

    virtual void GetFreePort( TUint aStreamId, TUint& aPort ) = 0;

    /**

     * Notifies that the first media packet is sent to

     * the remote end.

     *

     * @since   S60 v3.2

     * @param   aStreamId           The ID identifying stream

     * @return  void

     */     

    virtual void FirstMediaPacketSent( TUint aStreamId ) = 0;

    };

#endif // M_MNCMMEDIASOURCEOBSERVER_H