/*

* Copyright (c) 2006-2007 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:  ?Description

*

*/

#ifndef IRSTREAMSOURCEOBSERVER_H

#define IRSTREAMSOURCEOBSERVER_H

#include <e32def.h>

class CIRMetaData;

/**

 * This MClass is to be implemented by the observer of streamsource

 */

class MIRStreamSourceObserver

	{

public:

	/** 

	 *  MIRStreamSourceObserver::OpenComplete()

	 *  Called when connected to the channel server  

	 *  To implement the fill of buffer

	 */

	virtual void OpenComplete() = 0; 

	/** 

	 *  MIRStreamSourceObserver::ErrorConnecting()

	 *  Called when there is an error when connecting to the channel server  

	 *  @Param aErrorCode Indicates the type of error as described in

	 * 		   irstreamsourceerrors.h

	 */

	virtual void ErrorConnecting(TInt aErrorCode) = 0;

	/** 

	 *  MIRStreamSourceObserver::PlayNow()

	 *  Called to indicate to the player to start playing

	 */

	virtual void PlayNow() = 0;

	/** 

	 *  MIRStreamSourceObserver::Play()

	 *  Triggers the play after reconnecting to the channel

	 */

	virtual void Play() = 0;

	/** 

	 *  MIRStreamSourceObserver::StopBuffering()

	 *  Called to indicate to the player to stop buffering

	 */

	virtual void StopBuffering() = 0;

	/** 

	 *  MIRStreamSourceObserver::ConnectionEstablished(TInt aFeedValue)

	 *  Called to indicate that the connection to channel server is sucessful

	 */

	virtual void ConnectionEstablished() = 0 ;

	/** 

	 *  MIRStreamSourceObserver::UpdateProgress()

	 *  Called to provide teh buffer values

	 *  @param aFeedValue used to pump the buffering value

	 */

	virtual void UpdateProgress(TInt aFeedValue) = 0;

    /**

     * Invoked when meta data is received.

     *

     * @param   aMetaData   The meta data that was received.

     */

    virtual void HandleMetaDataReceivedL( const CIRMetaData& aMetaData ) = 0;

	// Added for ASF Player

	/** 

	 *  MIRStreamSourceObserver::Asf_ErrorConnecting()

	 *  Called when there is an error when connecting to the channel server  

	 *  @Param aErrorCode Indicates the type of error as described in

	 * 		   irstreamsourceerrors.h

	 */

	virtual void Asf_ErrorConnecting(TInt aErrorCode) = 0;

	/** 

	 *  MIRStreamSourceObserver::Asf_ConnectionEstablished(TInt aFeedValue)

	 *  Called to indicate that the connection to channel server is sucessful

	 */

	virtual void Asf_ConnectionEstablished() = 0 ;

	/** 

	 *  MIRStreamSourceObserver::Asf_UpdateProgress()

	 *  Called to provide teh buffer values

	 *  @param aFeedValue used to pump the buffering value

	 */

	virtual void Asf_UpdateProgress(TInt aFeedValue) = 0;

    /**

     * MIRStreamSourceObserver::Asf_HandleMetaDataReceivedL

     * Invoked when meta data is received.

     *

     * @param   aMetaData   The meta data that was received.

     */

    virtual void Asf_HandleMetaDataReceivedL( const CIRMetaData& aMetaData ) = 0;

	};

#endif // IRSTREAMSOURCEOBSERVER_H