1 /*

     2 * Copyright (c) 2005-2006 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:    Encoder capable to form redundant RTP payload.

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef MCCREDENCODER_H

    22 #define MCCREDENCODER_H

    23 

    24 //  INCLUDES

    25 #include    "mccredencdecbase.h"

    26 

    27 /**

    28 *  Redundancy RTP payload format encoder.

    29 *

    30 *  @lib mmccredplformat.dll

    31 *  @since Series 60 3.0

    32 */

    33 class CMccRedEncoder : public CMccRedEncDecBase

    34     {

    35     public:  // Constructors and destructor

    36         

    37         /**

    38         * Two-phased constructor.

    39         */

    40         static CMccRedEncoder* NewL();

    41         

    42         /**

    43         * Destructor.

    44         */

    45         virtual ~CMccRedEncoder();

    46 

    47     public: // New functions

    48         

    49         /**

    50         * Encode all encodings set to the RTP payload.

    51         * @since    Series 60 3.0

    52         * @param    aCurTimeStamp       Time stamp of the current RTP packet

    53         * @return   void

    54         */

    55         void EncodePayloadL( TUint aCurTimeStamp );

    56  

    57     private:    // Functions from base classes

    58         

    59         /**

    60         * From CMccRedEncDecBase. Initializes encoder.

    61         */

    62         void DoInitializeL( TInt aRedBlockCount, TInt aMaxPayloadSize,

    63             TInt aNumOfEncodings );

    64 

    65     private:

    66 

    67         /**

    68         * C++ default constructor.

    69         */

    70         CMccRedEncoder();

    71 

    72         /**

    73         * By default Symbian 2nd phase constructor is private.

    74         */

    75         void ConstructL();

    76         

    77         /**

    78         * Construct redundancy headers.

    79         * @since    Series 60 3.0

    80         * @param    aCurTimeStamp       Current time stamp

    81         * @return   None

    82         */

    83         void ConstructRedHeaders( TUint aCurTimeStamp );

    84 

    85     private:    // Data

    86          

    87          // Contains latest payloads constructed

    88          CMMFDataBuffer* iRedPayload;

    89          

    90          // Indicates whether redundant packets to send exist

    91          TBool iRedPackets;

    92          

    93          // Contains redundancy headers being encoded

    94          HBufC8* iRedHeaders;

    95          

    96          // Contains time stamps of the latest payloads constructed

    97          RArray<TUint> iRedTimeStamps;

    98 

    99     };

   100 

   101 #endif      // MCCREDENCODER_H   

   102             

   103 // End of File