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 outgoing SRTP stream states

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 

    22 #ifndef TSRTPSTREAMOUTSTATEBASE_H

    23 #define TSRTPSTREAMOUTSTATEBASE_H

    24 

    25 // INCLUDES

    26 #include <e32std.h>

    27 #include "tsrtpstreamstatebase.h"

    28 

    29 // FORWARD DECLARATIONS

    30 class MSRTPStreamOutContext;

    31 class MSRTPCryptoHandlerContext;

    32 class MSRTCPCryptoHandlerContext;

    33 

    34 // CLASS DECLARATION

    35 class TSRTPStreamOutStateBase : public TSRTPStreamStateBase

    36 	{

    37 	protected:	// Constructors and destructor

    38 

    39 		TSRTPStreamOutStateBase(MSRTPStreamOutContext& aStreamContext,

    40 		    MSRTPCryptoHandlerContextRTP& aCryptoHandlerRTPContext,

    41 		    MSRTPCryptoHandlerContextRTCP& aCryptoHandlerRTCPContext);

    42 

    43 	public: // New methods

    44         /**

    45         * virtual function for protecting plain RTP packet.

    46         * implemented in substates of TSRTPStreamOutStateBase.

    47         * @param aPacket plain RTP packet

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

    49         * @return HBufC8* encrypted packet

    50         */                              	

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

    52 

    53         /**

    54         * virtual function for protecting plain RTCP packet.

    55         * implemented in substates of TSRTPStreamOutStateBase.

    56         * @param aPacket plain RTCP packet

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

    58         * @return HBufC8* encrypted packet

    59         */                              	

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

    61 

    62 	private: // Constructors

    63 		/// Default constructor. Not implemented.

    64 		TSRTPStreamOutStateBase();

    65 

    66 	protected: // Data

    67 		/* 

    68 	    * interface for a transmitting stream for changing state

    69 	    */

    70 		MSRTPStreamOutContext& iStreamContext;

    71 	};

    72 

    73 #endif // TSRTPStreamOutStateBase_H