--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipappprotocols_plat/srtp_api/inc/srtpstream.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,198 @@
+/*
+* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:    Represents an SRTP stream.
+*
+*/
+
+
+
+
+#ifndef __SRTP_STREAM_H__
+#define __SRTP_STREAM_H__
+
+// INCLUDES
+#include <e32def.h>
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class CSRTPSession;
+class CSRTPCryptoContext;
+class MSRTPReKeyingObserver;
+class CSRTPCryptoHandlerSRTP;
+class CSRTPCryptoHandlerSRTCP;
+
+/**
+* Represents an SRTP stream.
+*/
+class CSRTPStream : public CBase
+    {
+    public: 
+    
+        /**
+        * iStreamOffset, List offset.
+        */
+        static const TInt iStreamOffset;
+
+        /**
+        * iStreamLink, Link to list.
+        */
+        TSglQueLink iStreamLink;
+    
+    public:  
+        
+        /**
+        * Set roll-over counter value.
+        * RFC 3711 3.3.1 ROC() can not be reset to 0 after Re-Key
+        * @param aROC The new ROC value. 
+        * @return void
+        */
+        IMPORT_C void SetROC( TUint32 aROC );
+
+        /**
+        * Get roll-over counter value.
+        * @return current ROC value. 
+        */
+        IMPORT_C TUint32 ROC( ) const;
+        
+        /**
+        * Get SSRC
+        * @return SSRC.
+        */
+        IMPORT_C TUint SSRC( ) const;
+        
+        /**
+        * Set SSRC value if the stream's SSRC is 0 as late binding
+        * @param aSSRC The new SSRC value. 
+        * @return void
+        */
+ 		void SetSSRC( const TUint aSSRC );
+ 		
+        /**
+        * Get cryptographic context associated for this stream
+        * or the one associated for the session
+        * @return CSRTPCryptoContext
+        */
+        CSRTPCryptoContext& GetCryptoContext();
+        
+        /**
+        * Call for Rekey 
+        * @return void
+        */
+        void ReKeyNeeded();        
+   
+
+		/**
+        * Call for KeyExpired
+        * @return void
+        */
+        void KeyExpired();    
+          
+        /**
+        * Destructor
+        */
+        ~CSRTPStream();
+
+        /**
+        * Tell stream type is InStream or OutStream
+        * @return TBool
+        */
+		IMPORT_C TBool StreamType();
+		
+		/**
+        * Check if crypto context has been set
+        * @return ETrue if crypto context is existed, otherwise EFalse
+        */
+        TBool IsContextSet();
+        
+        /**
+        * Delete the existed crypto context and re-initial the states
+        * @param None
+        * @leave KErrNone if success, system-wide error code otherwise
+        * @return void
+        */        
+		virtual void UpdateCryptoAndStatesL()=0;
+                                
+    protected:  //methods
+        CSRTPStream (CSRTPSession& aSession, 
+        				const TUint aSSRC, 
+        				TBool aStreamType );
+
+        CSRTPStream (CSRTPSession& aSession,
+                        TUint aSSRC,
+                       CSRTPCryptoContext* aCon,
+                       MSRTPReKeyingObserver& aObs,
+                       TBool aStreamType );
+
+        CSRTPStream (CSRTPSession& aSession,
+        			TBool aStreamType);
+
+        CSRTPStream (CSRTPSession& aSession,
+                       CSRTPCryptoContext* aCon,
+                       MSRTPReKeyingObserver& aObs,
+                       TBool aStreamType );
+        
+        CSRTPStream (CSRTPSession& aSession,
+                        TUint aSSRC,
+                       MSRTPReKeyingObserver& aObs,
+                       TBool aStreamType );
+        CSRTPStream (CSRTPSession& aSession,
+                       MSRTPReKeyingObserver& aObs,
+                       TBool aStreamType );       
+                       
+        /**
+        * Create RTP crypto handler
+        * @return void
+        */
+        void CreateCryptoHandlerSRTPL();        
+
+        /**
+        * Create RTCP crypto handler
+        * @return void
+        */
+        void CreateCryptoHandlerSRTCPL();
+        
+        
+        /**
+        * Delete the existed crypto handler and create a new one
+        * @return void
+        */
+        void UpdateCryptoHandlerL(); 
+        
+
+    protected:  //data
+        CSRTPSession& iSession;             // access to session
+        CSRTPCryptoContext* iContext;       // crypto context
+        MSRTPReKeyingObserver* iObserver;         // observer (application)    
+        TBool   iStrmSpecificCrypto;              // do we have stream or session-
+                                                  // spesific context
+        CSRTPCryptoHandlerSRTP* iHandlerRTP;          // crypto handling class for RTP
+        CSRTPCryptoHandlerSRTCP* iHandlerRTCP;         // crypto handling class for RTCP
+        TUint32 iROC;                             // unsigned 32 bit ROC
+        TUint iSSRC;                        // SSRC     
+        TBool iIsStreamInType;    
+        TBool iRekey;                   
+ 		    
+    private:  
+    #ifdef EUNIT_TESTING
+        friend class UT_CSRTPCryptoHandlerSRTP;
+        friend class UT_CSRTPCryptoHandlerSRTCP;
+        friend class UT_CSRTPCryptoHandler;
+        friend class UT_CSRTPStreamIn;        
+        friend class UT_CSRTPStreamOut;
+        friend class UT_CSRTPStream;      
+        friend class UT_CSRTPCryptoContext; 
+    #endif 
+    };
+
+#endif // __SRTP_STREAM_H__