/*

* Copyright (c) 2004-2007 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:    Provides DL Datapath for DL subthread

*

*/

#ifndef MCCDLDATAPATH_H

#define MCCDLDATAPATH_H

//  INCLUDES

#include "mccdatapathbase.h"

// FORWARD DECLARATIONS

class MMccResources;

// CLASS DECLARATION

/**

*  Mcc DL Datapath

*

*  @lib Mccsubthreads.dll

*  @since Series 60 3.0

*/

NONSHARABLE_CLASS( CMccDlDataPath ) : public CMccDataPathBase

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CMccDlDataPath* NewL( MAsyncEventHandler* aEventHandler, 

                                     MMccResources* aMccResources,

                                     TMediaId aMediaId );

        /**

        * Destructor.

        */

        virtual ~CMccDlDataPath();

    public: // New functions

        /**

        * Negotiates the source and sink

        * @since Series 60 3.0

        * @param aDataSource Source to be negotiated with

        * @return void

        */

        void NegotiateL( MDataSource& aDataSource );

        /**

        * Loads codec.

        */

        void LoadL( MDataSource& aDataSource );

    public: // Functions from baseclasses

        /**

        * From MDataSink

        */

        void BufferFilledL(CMMFBuffer* aBuffer);

        /**

        * From MDataSource

        */

        void BufferEmptiedL(CMMFBuffer* aBuffer);

        /**

        * From CMccDataPathBase

        */

        void PrimeL( TUint32 aEndpointId );

        /**

        * From CMccDataPathBase

        */

        void PlayL( TUint32 aEndpointId );

        /**

        * From CMccDataPathBase

        */

        void PauseL( TUint32 aEndpointId );

        /**

        * From CMccDataPathBase

        */

        void StopL( TUint32 aEndpointId );

        /**

        * From CMccDataPathBase

        */

        void ResumeL( TUint32 aEndpointId );

        /**

        * From CMccDataPathBase

        */

        void FillSourceBufferL();

        /**

        * From CMccDataPathBase

        */

        void EmptySinkBufferL();

    private:    // Functions from baseclasses

        /**

        * From CMccDataPathBase

        */

        void DoEndOfDataL();

    private: // Constructors

        /**

        * C++ default constructor.

        */

        CMccDlDataPath( MAsyncEventHandler* aEventHandler, 

                        MMccResources* aMccResources,

                        TMediaId aMediaId );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

    private:    // New functions

        void ActivateSourceBuffer();

    private:    // Friend classes

        #ifdef TEST_EUNIT

        friend class UT_CMccDlDataPath;

        #endif

    };

#endif      // MCCDLDATAPATH_H

// End of File