/*

* Copyright (c) 2005-2006 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:    Encoder capable to form redundant RTP payload.

*

*/

#ifndef MCCREDENCODER_H

#define MCCREDENCODER_H

//  INCLUDES

#include    "mccredencdecbase.h"

/**

*  Redundancy RTP payload format encoder.

*

*  @lib mmccredplformat.dll

*  @since Series 60 3.0

*/

class CMccRedEncoder : public CMccRedEncDecBase

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CMccRedEncoder* NewL();

        /**

        * Destructor.

        */

        virtual ~CMccRedEncoder();

    public: // New functions

        /**

        * Encode all encodings set to the RTP payload.

        * @since    Series 60 3.0

        * @param    aCurTimeStamp       Time stamp of the current RTP packet

        * @return   void

        */

        void EncodePayloadL( TUint aCurTimeStamp );

    private:    // Functions from base classes

        /**

        * From CMccRedEncDecBase. Initializes encoder.

        */

        void DoInitializeL( TInt aRedBlockCount, TInt aMaxPayloadSize,

            TInt aNumOfEncodings );

    private:

        /**

        * C++ default constructor.

        */

        CMccRedEncoder();

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        /**

        * Construct redundancy headers.

        * @since    Series 60 3.0

        * @param    aCurTimeStamp       Current time stamp

        * @return   None

        */

        void ConstructRedHeaders( TUint aCurTimeStamp );

    private:    // Data

         // Contains latest payloads constructed

         CMMFDataBuffer* iRedPayload;

         // Indicates whether redundant packets to send exist

         TBool iRedPackets;

         // Contains redundancy headers being encoded

         HBufC8* iRedHeaders;

         // Contains time stamps of the latest payloads constructed

         RArray<TUint> iRedTimeStamps;

    };

#endif      // MCCREDENCODER_H   

// End of File