--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/multimediacommscontroller/mmccrtpsourcesink/inc/mccjittercalculator.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,213 @@
+/*
+* Copyright (c) 2005-2006 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:    MccJitterCalculator calculates jitter level and compares given
+*                triggers.
+*
+*/
+
+
+
+
+#ifndef MCCJITTERCALCULATOR_H
+#define MCCJITTERCALCULATOR_H
+
+//  INCLUDES
+#include <mmf/common/mmfcontrollerframework.h>
+#include <mmccinterfacedef.h>
+
+#ifdef FTD_ENABLED
+#include <e32msgqueue.h>
+#include <mccstreamstats.h>
+#include <mccjbufferstats.h>
+#endif
+
+
+// CLASS DECLARATION
+
+/**
+*  Observer for jitter calculation event notification
+*
+*  @lib      MccRtpSourceSink.dll
+*  @since    Series 60 3.2
+*/
+class MRtpJitterObserver
+    {
+    public:
+          virtual void SendJitterEvent( TMccRtpEventData aEvent, TInt aError ) = 0;
+    };
+
+
+/**
+* Class which implements jittercalculations for received RTP packets
+* 
+* @lib Mccrtpsourcesink.dll
+* @since Series 60 3.0
+*/
+class CMccJitterCalculator : public CBase
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Two-phased constructor.
+        */
+        static CMccJitterCalculator* NewL( MRtpJitterObserver& aObserver );
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CMccJitterCalculator( );
+
+    public: // New functions
+    
+        /**
+        * Starts media quality observing
+        * @since    Series 60 3.0
+        * @return   Error code
+        */
+        TInt StartObserving();
+        
+        /**
+        * Cancels media quality observing
+        * @since    Series 60 3.0
+        * @return   void
+        */
+        void CancelObserving();
+        
+        /**
+        * Handles received packets and calculates jitter level
+        * @since    Series 60 3.0
+        * @param    "aHeaderInfo"
+        *           RTP header from received packet
+        * @return   void
+        */
+        void RtpPacketReceived( const TUint32 aTimeStamp, TBool aMarker );
+        
+        /**
+        * Set media configurations
+        * @since    Series 60 3.0
+        * @param    "aMessage"
+        *           message from client
+        * @return   void
+        */
+        void SetMediaConfigsL( const TMMFMessage& aMessage );
+        
+        /**
+        * Reset local counters
+        * @since    Series 60 3.0
+        * @return   void
+        */
+        void ResetCounters( );
+        
+        /**
+        * Check the observing status
+        * @since    Series 60 3.0
+        * @return   iMediaQualityObservingStarted
+        */
+        TBool IsObserving() const;
+        
+    private:
+        /**
+        * C++ default constructor.
+        */
+        CMccJitterCalculator( MRtpJitterObserver& aObserver );
+
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        void ConstructL();
+        
+        /**
+        * Jitter level observing routines
+        * @since    Series 60 3.0
+        * @return   void
+        */
+        void JitterObserving();
+        
+    private:   
+        
+        // Number of packets received
+        TUint32 iPacketsReceived;
+
+        // Current jitter estimate
+        TUint64 iCurJitter;
+
+        // Holds the previous packet arrival time
+        TTime iPrevPacketArrival;
+        
+        // Holds the previous packets transit time
+        TInt64 iPrevPacketTransit;
+                
+        // Indicates reference jitter level from client
+        TUint iJitterLevelFromClient;
+        
+        // Indicates current report type
+        TInt iReportType;
+        
+        // Indicates report interval type
+        TInt iReportIntervalType;
+        
+        // Indicates report interval
+        TInt iReportInterval;
+        
+        // Flags for indicating jitter level observing state and frame loss rate
+        TBool iJitterObsOn;
+        TBool iFrameLossObsOn;
+
+        // Indicates observing state. Refer to IsObserving-method
+        TBool iMediaQualityObservingStarted;
+        
+        // Indicates interval time
+        TTime iIntervalTime;
+        
+        // Indicates packet loss rate from client
+        TInt iPacketLossFromClient;
+        
+        // Indicates amount of received packets
+        TUint32 iReceivedPacketCounter;
+        
+        // Media config buffer is filled with config data
+        TMccMediaQualityConfig iMediaConf;
+        
+        // Indicates home time
+        TTime iHomeTime;
+        
+        // Indicates current time
+        TTime iCurTime;
+        
+        /**
+         * jitter observer
+         * Own.
+         */
+        MRtpJitterObserver* iObserver;
+        
+        #ifdef FTD_ENABLED
+
+        // Message queue carrying stream statistics
+        RMsgQueue<TMccStreamStats> iStreamStatsQueue;
+        
+        // Message queue carrying jitter buffer statistics
+        RMsgQueue<TMccJBufferStats> iJBufStatsQueue;
+
+        #endif
+        
+        #ifdef TEST_EUNIT
+        public:
+            friend class UT_CMccRtpDataSource;
+            friend class UT_CMccJitterCalculator;
+        #endif
+    };
+
+#endif      // MCCJITTERCALCULATOR_H   
+            
+// End of File