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 

    21 #ifndef MSRTPSTREAMINCONTEXT_H

    22 #define MSRTPSTREAMINCONTEXT_H

    23 

    24 #include <e32std.h>

    25 

    26 

    27 // CLASS DECLARATION

    28 /**

    29 * A context for CSRTPStreamIn states. Defines the states for incoming stream.

    30 *

    31 *  @lib n/a

    32 */

    33 class MSRTPStreamInContext

    34 	{

    35 	public: // Enumerations

    36 	

    37         /** Subscription states */

    38         enum TContextInState 

    39             {

    40             /* Not Initialized, no calls made for this stream yet,  */

    41 			ESRTPStreamInUninitialized=0,

    42 			/**  Use "late binding" of SSRC, that is, */

    43 			/** read SSRC from the packet */

    44 			ESRTPStreamInLateBinding=1,			          

    45             /** Normal, stream initialized, use the SSRC given from user */

    46 			ESRTPStreamInNormal=2,

    47 			/** Not a real state. Upper limit for the number of states */

    48 			EMaxStates=3

    49             };

    50 	

    51     public: // New functions

    52                        

    53         /*

    54         * Virtual function for changing state of the current 

    55         * receiver stream (for RTP)

    56         * Implemented in CSRTPStreamIn

    57         * @param aNewState new RTP state which stream is changed to

    58         */

    59         virtual void ChangeRTPState(TContextInState aNewState) = 0;

    60 

    61         /*

    62         * Virtual function for changing state of the current 

    63         * receiver stream (for RTCP)

    64         * Implemented in CSRTPStreamIn

    65         * * @param aNewState new RTCP state which stream is changed to

    66         */

    67         virtual void ChangeRTCPState(TContextInState aNewState) = 0;

    68         

    69 	};

    70 #endif  //MSRTPSTREAMINCONTEXT_H