1 /*

     2 * Copyright (c) 2005 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:    implementation

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef MSRTPCRYPTOHANDLERCONTEXTRTCP_H

    21 #define MSRTPCRYPTOHANDLERCONTEXTRTCP_H

    22 

    23 #include <e32std.h>

    24 #include "msrtpcryptohandlercontext.h"

    25 

    26 

    27 // CLASS DECLARATION

    28 /*

    29 * A context for stream classes for using RTCP-specific crypto handling operations.

    30 *

    31 *  @lib n/a

    32 */

    33 class MSRTPCryptoHandlerContextRTCP: public MSRTPCryptoHandlerContext

    34 	{	

    35 public: // New functions  

    36        

    37        /*

    38         * Determines the index i

    39         * of an SRTCP packet by incrementing one on sender's side.         

    40         * @return void        

    41         */

    42 	    virtual void CountSenderPacketIndexL() = 0;	    

    43  

    44        /*

    45         * Initial the index i

    46         * of an SRTCP packet with initial packet index on sender's side.         

    47         * @return void        

    48         */		

    49  		virtual void InitialPacketIndex()=0;

    50         

    51        /*

    52         * Implements pseudocode on RFC 3711 Appendix A

    53         * for determining the index i of an SRTP packet with given sequence number SEQ

    54         * and current s_l value in receiver side

    55         * @leave KErrNone if success, system-wide error code otherwise

    56         * @return void                

    57         */		

    58  		virtual void ReceiverPacketIndexL()	=0;    

    59 	};

    60 #endif  //MSRTPCryptoHandlerContextRTCP_H