/*

* 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 __CMCETESTUIENGINEAUDIOSTREAM_H__

#define __CMCETESTUIENGINEAUDIOSTREAM_H__

// INCLUDES

#include <MCEAudioCodec.h>

#include <MCEMediaSource.h>

#include <MCEMediaSink.h>

#include "MMCETestUIEngineCmdProvider.h"

#include "CMCETestUIEngineAudioStream.h"

#include <e32base.h>

// FORWARD DECLARATIONS

class CMCETestUIEngine;

class CMceAudioStream;

class CMCETestUIEngineSink;

class CMCETestUIEngineSource;

class CMCETestUIEngineCodec;

// CLASS DECLARATION

/**

* 

* CMCETestUIEngineAudioStream provides a wrapper for CMCEAudioStream.

* Class is not the traditional wrapper in a sense that it would 

* conform to interface provided by CMCESession. Instead class

* implements interface MMCETestUIEngineCmdProvider to provide

* same kind of functionality in controlled way on different levels 

* of abstraction.

*

*/

class CMCETestUIEngineAudioStream : public CBase,

                                    public MMCETestUIEngineCmdProvider

    {

    public: // public enumerations

        enum TDirection

            {

            EUpLink = 0,

            EDownLink,

            ENotSpesified            

            };

    public: // Constructors and destructors

    	/**

    	* Destructor.

    	*/

    	IMPORT_C virtual ~CMCETestUIEngineAudioStream();

       /**

        * Two-phased constructor. Not imported.

        */

        static CMCETestUIEngineAudioStream* NewL(

            CMCETestUIEngine& aEngine, 

            CMceAudioStream& aAudioStream );

    public: // From MMCETestUICommandProvider

        /**

        * Gets the commands applicaple to this session object.

        *

        * @return reference to array of commands

        */

        IMPORT_C const RPointerArray<TMCETestUIEngineCmdBase>& 

                    GetCommandsL();

    public: // New functions

	     /**

        * @return Textual representation of the state of the wrapped MCEStream

        */

	    IMPORT_C const TDesC16& StreamState() ;

	    /**

	    * @return Direction of the session

	    */

	    IMPORT_C CMCETestUIEngineAudioStream::TDirection Direction() const;

	    /**

	    * @return Textual representation of session's direction

	    */

	    IMPORT_C const TDesC16& TextualDirection() const;

	    /**

	    * Gets the state of the stream

	    * @return Textual representation of streams state

	    */

        IMPORT_C const TDesC16& State() const;

        IMPORT_C const RPointerArray<CMCETestUIEngineSource>& SourcesL();

        IMPORT_C const RPointerArray<CMCETestUIEngineSink>& SinksL();

        IMPORT_C RPointerArray<CMCETestUIEngineCodec>& CodecsL(); 

        IMPORT_C RPointerArray<CMCETestUIEngineCodec>& CurrentCodecs();       

    public: // New functions, internal

        /**

        * Gets wrapped MCEAudioStream object

        * 

        * @return wrapped MCEMCEAudioStream

        */

        CMceAudioStream& AudioStream();		

        /**

        *

        * Solves and sets the direction of session based on streams and

        * their properties.

        *

        * @return the newly set direction of session

        */

        CMCETestUIEngineAudioStream::TDirection SolveDirection();

        TInt iOneTimeRTCPFlag;

    private:  // private constructors

        /**

        * C++ default constructor. Not implemented.

        */

        CMCETestUIEngineAudioStream();	

    protected:

        /**

        * C++ first phase constructor.

        */

        CMCETestUIEngineAudioStream( 

                    CMCETestUIEngine& aEngine,

                    CMceAudioStream& aAudioStream );

       	/**

        * Symbian second-phase constructor

        */

        void ConstructL();	   

    protected:  // owned data  

        // Commands applicable to an audiostream. Owned.

       RPointerArray<TMCETestUIEngineCmdBase> iCommands;

       RPointerArray<CMCETestUIEngineSource> iSources;

       RPointerArray<CMCETestUIEngineSink> iSinks;

       RPointerArray<CMCETestUIEngineCodec> iCodecs;

    protected:  // not owned data

       CMCETestUIEngine& iEngine;       

       // Reference to wrapped MCEAudioStream

       CMceAudioStream& iAudioStream;

       // Indicator of direction

       CMCETestUIEngineAudioStream::TDirection iDirection;

    };

#endif