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:    Base class for incoming SRTP stream states

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef TSRTPSTREAMINSTATEBASE_H

    22 #define TSRTPSTREAMINSTATEBASE_H

    23 

    24 // INCLUDES

    25 #include <e32std.h>

    26 #include "tsrtpstreamstatebase.h"

    27 

    28 // FORWARD DECLARATIONS

    29 class MSRTPStreamInContext;

    30 class MSRTPCryptoHandlerContext;

    31 class MSRTPCryptoHandlerContextRTP;

    32 class MSRTPCryptoHandlerContextRTCP;

    33 

    34 // CLASS DECLARATION

    35 class TSRTPStreamInStateBase : public TSRTPStreamStateBase

    36 	{

    37 	protected:	// Constructors and destructor

    38 

    39 		TSRTPStreamInStateBase(MSRTPStreamInContext& aStreamContext,

    40 		    MSRTPCryptoHandlerContextRTP& aCryptoHandlerRTPContext,

    41 		    MSRTPCryptoHandlerContextRTCP& aCryptoHandlerRTCPContext);

    42 

    43 	public: // New methods

    44         /**

    45         * virtual function for unprotecting encrypted RTP packet.

    46         * implemented in substates of TSRTPStreamInStateBase.

    47         * @param aPacket encrypted packet

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

    49         * @return HBufC8* decrypted packet

    50         */                              

    51 		virtual HBufC8* DoUnprotectSrtpL(const TDesC8& aPacket)=0;

    52 

    53         /**

    54         * virtual function for unprotecting encrypted RTCP packet.

    55         * implemented in substates of TSRTPStreamInStateBase.

    56         * @param aPacket encrypted packet

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

    58         * @return HBufC8* decrypted packet

    59         */                              

    60 		virtual HBufC8* DoUnprotectSrtcpL(const TDesC8& aPacket)=0;

    61 		

    62 	private: // Constructors

    63 		/// Default constructor. Not implemented.

    64 		TSRTPStreamInStateBase();

    65 

    66 	protected: // Data

    67 	    /* 

    68 	    * interface for a receiver stream for changing state

    69 	    */

    70 		MSRTPStreamInContext& iStreamContext;

    71 		

    72 	};

    73 

    74 #endif // TSRTPStreamInStateBase_H