author | hgs |
Fri, 09 Jul 2010 13:14:28 +0300 | |
changeset 32 | f2ed1fc4c163 |
parent 0 | 1bce908db942 |
child 59 | b0e4b01681c5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2005-2006 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: MccJitterCalculator calculates jitter level and compares given |
0
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* triggers. |
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* |
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*/ |
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// INCLUDE FILES |
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#include "mccinternaldef.h" |
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#include "mccrtpdatasource.h" |
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#include "mccjittercalculator.h" |
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#include "mccinternalevents.h" |
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#ifdef VOIP_TRACE_ENABLED |
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#include <voip_trace.h> |
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#endif |
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#ifdef _DEBUG |
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#define TRACE_JITCALC |
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#include <e32svr.h> |
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#endif |
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// CONSTANTS |
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// Packet interval for jitter/jitterbuffer stat reports |
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const TUint KJitterReportInterval = 16; |
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// Conversion factor from uSecs to mSecs |
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const TInt KConversionFactor = 1000; |
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// Samplerate in kHz, currently only 8kHz supported |
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const TUint KSampleRate = 8; |
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const TInt KNum4( 4 ); |
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const TInt KNum8( 8 ); |
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const TInt KNumZero( 0 ); |
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const TInt KNumHundred( 100 ); |
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||
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const TUint32 KRtpFractationAccuracy = 5000; |
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// Specified period of the moving average |
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const TUint32 KDivider = 250; |
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// Specified the max calculate count of package loss |
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const TUint32 KMaxCalCount = 200; |
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// ============================ MEMBER FUNCTIONS =============================== |
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// ----------------------------------------------------------------------------- |
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// CMccJitterCalculator::CMccJitterCalculator |
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// C++ default constructor can NOT contain any code, that |
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// might leave. |
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// ----------------------------------------------------------------------------- |
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// |
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CMccJitterCalculator::CMccJitterCalculator( MRtpJitterObserver& aObserver ) : |
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iObserver( &aObserver ) |
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{ |
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} |
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// ----------------------------------------------------------------------------- |
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// CMccJitterCalculator::ConstructL |
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// Symbian 2nd phase constructor can leave. |
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// ----------------------------------------------------------------------------- |
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// |
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#ifdef FTD_ENABLED |
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void CMccJitterCalculator::ConstructL() |
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{ |
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TInt err = iStreamStatsQueue.OpenGlobal( KMccStreamStats, EOwnerProcess ); |
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if ( KErrNone != err ) |
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{ |
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User::Leave( err ); |
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} |
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err = iJBufStatsQueue.OpenGlobal( KMccJBufferStats, EOwnerProcess ); |
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if ( KErrNone != err ) |
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{ |
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iStreamStatsQueue.Close(); |
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User::Leave( err ); |
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} |
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} |
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#endif |
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// ----------------------------------------------------------------------------- |
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// CMccJitterCalculator::NewL |
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// Static constructor. |
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// ----------------------------------------------------------------------------- |
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// |
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CMccJitterCalculator* CMccJitterCalculator::NewL( MRtpJitterObserver& aObserver ) |
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{ |
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CMccJitterCalculator* self = |
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new ( ELeave ) CMccJitterCalculator( aObserver ); |
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#ifdef FTD_ENABLED |
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CleanupStack::PushL ( self ); |
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self->ConstructL (); |
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CleanupStack::Pop( self ); |
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#endif |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// CMccJitterCalculator::~CMccJitterCalculator |
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// Destructor. |
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// ----------------------------------------------------------------------------- |
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// |
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CMccJitterCalculator::~CMccJitterCalculator() |
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{ |
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#ifdef TRACE_JITCALC |
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RDebug::Print( _L("CMccJitterCalculator::~CMccJitterCalculator IN") ); |
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#endif |
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|
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if ( IsObserving() ) |
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{ |
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CancelObserving(); |
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} |
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128 |
|
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iObserver = NULL; |
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|
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#ifdef FTD_ENABLED |
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iStreamStatsQueue.Close(); |
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iJBufStatsQueue.Close(); |
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#endif |
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|
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#ifdef TRACE_JITCALC |
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RDebug::Print( _L("CMccJitterCalculator::~CMccJitterCalculator OUT") ); |
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#endif |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CMccJitterCalculator::RtpPacketReceived |
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// Calculates jitter values |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccJitterCalculator::RtpPacketReceived( const TUint32 aTimeStamp, |
32 | 147 |
TBool aMarker, TUint16 aSeqNum ) |
0
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{ |
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#ifdef TRACE_JITCALC |
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RDebug::Print( _L("CMccJitterCalculator::RtpPacketReceived IN") ); |
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#endif |
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|
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#ifdef VOIP_RECEIVED_RTP_PACKET_INFO_ENABLED |
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VoipTrace("%x %x %d %d %d", MCC_TRACE, MCC_RECEIVED_RTP_PACKET_INFO, |
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aHeaderInfo.iSeqNum, aHeaderInfo.iTimestamp, iPacketsReceived ); |
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#endif |
32 | 157 |
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TBool calculatePkgLoss = ETrue; |
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if ( EMccQualityPacketBased == iReportIntervalType || iFrameLossObsOn ) |
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{ |
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// Save current packet sequence number |
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// The SeqNum come from RTP package. It maybe start from a random number between |
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// 0 to 65535. iStartingSeqNum should be reset |
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// while iCurrentSeqNum was reset (by remote packages) |
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iCurrentSeqNum = aSeqNum; |
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if( iStartingSeqNum == KNumZero || |
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iStartingSeqNum > iCurrentSeqNum ) |
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{ |
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iStartingSeqNum = aSeqNum; |
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if ( iStartingSeqNum > 0 ) |
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{ |
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iStartingSeqNum--; |
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} |
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else |
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{ |
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#ifdef TRACE_JITCALC |
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RDebug::Print( _L("Received SeqNum is 0, don't calculate lost package") ); |
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#endif |
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calculatePkgLoss = EFalse; |
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} |
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} |
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iReceivedPacketCounter++; |
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} |
|
0
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|
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// Jitter calculating based on RFC3550 Appendix A.8, see www.ietf.org |
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if ( aMarker || !iPacketsReceived ) |
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{ |
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// A new talkspurt, redo calculations Marker bit is set after silent |
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// period and indicates that new speech data is received |
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iPrevPacketArrival.HomeTime(); |
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TInt64 pcktTrans = iPrevPacketArrival.Int64() / TInt64( KConversionFactor ); |
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|
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// Convert timestamp to milliseconds and calculate transit time |
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iPrevPacketTransit = |
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pcktTrans - static_cast<TInt64>( ( aTimeStamp / KSampleRate ) ); |
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|
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// Reset jitter and packet counter for new talkspurt |
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iCurJitter = KNumZero; |
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iPacketsReceived = KNumZero; |
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} |
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else |
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{ |
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// Just another packet in the talkspurt |
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TTime newPacket; |
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newPacket.HomeTime(); |
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|
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// Time of Arrival in milliseconds |
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TInt64 curPacketTOA = ( newPacket.Int64() / TInt64( KConversionFactor ) ); |
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|
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// Convert timestamp to milliseconds and calculate transit time |
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TInt64 curPacketTransit |
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= curPacketTOA - static_cast<TInt64>( ( aTimeStamp / KSampleRate ) ); |
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|
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TInt64 diff = curPacketTransit - iPrevPacketTransit; |
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iPrevPacketTransit = curPacketTransit; |
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diff = Abs( diff ); |
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|
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// Jitter is floating mean value over 16 packets last received |
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iCurJitter += diff - ( ( iCurJitter + KNum8 ) >> KNum4 ); |
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|
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#ifdef TRACE_JITCALC |
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RDebug::Print( _L("CMccJitterCalculator::RtpPacketReceived CUR_TOA: %Ld"), curPacketTOA ); |
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RDebug::Print( _L("CMccJitterCalculator::RtpPacketReceived CUR_TRANS: %Ld"), curPacketTransit ); |
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RDebug::Print( _L("CMccJitterCalculator::RtpPacketReceived CUR_DIFF: %Ld"), diff ); |
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RDebug::Print( _L("CMccJitterCalculator::RtpPacketReceived CUR_JITT: %Lu"), iCurJitter ); |
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RDebug::Print( _L("CMccJitterCalculator::RtpPacketReceived SC_CUR_JITT: %Lu"), ( iCurJitter >> KNum4 ) ); |
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#endif |
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} |
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|
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iPacketsReceived++; |
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iCurTime.HomeTime(); |
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|
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#ifdef TRACE_JITCALC |
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RDebug::Print ( _L("CMccJitterCalculator::RtpPacketReceived newPacket = %Ld"), iCurTime.Int64() ); |
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#endif |
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|
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#ifdef FTD_ENABLED |
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|
238 |
TMccStreamStats stats; |
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|
239 |
stats.iPacketsReceived = iPacketsReceived; |
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|
240 |
stats.SetFieldUpdatedFlag( EPacketsReceived ); |
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|
241 |
iStreamStatsQueue.Send( stats ); |
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|
242 |
|
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243 |
TMccJBufferStats jStats; |
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|
244 |
jStats.iJitterEstimate = iCurJitter; |
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|
245 |
iJBufStatsQueue.Send( jStats ); |
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|
246 |
#endif |
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|
247 |
|
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|
248 |
// Report jitter if we have enough received packets and jitter |
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|
249 |
if ( !( iPacketsReceived % KJitterReportInterval ) && iCurJitter ) |
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|
250 |
{ |
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|
251 |
#ifdef TRACE_JITCALC |
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|
252 |
RDebug::Print( _L("CMccJitterCalculator::RtpPacketReceived SENDING RCV: %d"), iPacketsReceived ); |
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|
253 |
#endif |
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254 |
|
32 | 255 |
TMccRtpEventDataExtended event( ( iCurJitter >> KNum4 ), |
0
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|
256 |
iPacketsReceived, |
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|
257 |
iPrevPacketTransit, |
32 | 258 |
KNumZero, |
259 |
KNumZero, |
|
0
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|
260 |
KNumZero ); |
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|
261 |
|
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Revision: 201003
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|
262 |
iObserver->SendJitterEvent( event, KErrNone ); |
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|
263 |
} |
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Revision: 201003
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|
264 |
|
32 | 265 |
if ( calculatePkgLoss ) |
266 |
{ |
|
267 |
JitterObserving(); |
|
268 |
} |
|
0
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269 |
} |
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|
270 |
|
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|
271 |
// --------------------------------------------------------------------------- |
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272 |
// CMccJitterCalculator::StartObserving |
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|
273 |
// Switch to deside report type |
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|
274 |
// --------------------------------------------------------------------------- |
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|
275 |
// |
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276 |
TInt CMccJitterCalculator::StartObserving() |
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277 |
{ |
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|
278 |
#ifdef TRACE_JITCALC |
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279 |
RDebug::Print( _L("CMccJitterCalculator::StartObserving IN") ); |
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|
280 |
#endif |
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|
281 |
|
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Revision: 201003
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|
282 |
TInt err( KErrNone ); |
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Revision: 201003
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|
283 |
iHomeTime.HomeTime(); |
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Revision: 201003
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|
284 |
|
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|
285 |
#ifdef TRACE_JITCALC |
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Revision: 201003
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|
286 |
RDebug::Print ( _L("CMccJitterCalculator::StartObserving HomeTime = %Ld"), iHomeTime.Int64() ); |
1bce908db942
Revision: 201003
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|
287 |
RDebug::Print( _L("CMccJitterCalculator::StartObserving iReportType: %d"), iReportType ); |
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Revision: 201003
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|
288 |
#endif |
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Revision: 201003
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|
289 |
|
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Revision: 201003
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|
290 |
switch( iReportType ) |
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Revision: 201003
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|
291 |
{ |
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Revision: 201003
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|
292 |
case EMccJitterReport: |
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Revision: 201003
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|
293 |
#ifdef TRACE_JITCALC |
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Revision: 201003
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|
294 |
RDebug::Print( _L("CMccJitterCalculator::StartObserving iReportType selected EMccJitterReport")); |
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Revision: 201003
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|
295 |
#endif |
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Revision: 201003
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|
296 |
iJitterObsOn = ETrue; |
1bce908db942
Revision: 201003
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diff
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|
297 |
iMediaQualityObservingStarted = ETrue; |
1bce908db942
Revision: 201003
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parents:
diff
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|
298 |
break; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
299 |
|
1bce908db942
Revision: 201003
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diff
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|
300 |
case EMccPacketLossReport: |
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Revision: 201003
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diff
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|
301 |
#ifdef TRACE_JITCALC |
1bce908db942
Revision: 201003
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|
302 |
RDebug::Print( _L("CMccJitterCalculator::StartObserving iReportType selected EMccPacketLossReport")); |
1bce908db942
Revision: 201003
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diff
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|
303 |
#endif |
1bce908db942
Revision: 201003
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|
304 |
iFrameLossObsOn = ETrue; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
305 |
iMediaQualityObservingStarted = ETrue; |
1bce908db942
Revision: 201003
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parents:
diff
changeset
|
306 |
break; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
307 |
|
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
308 |
case EMccQualityReportAll: |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
309 |
#ifdef TRACE_JITCALC |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
310 |
RDebug::Print( _L("CMccJitterCalculator::StartObserving iReportType selected EMccQualityReportAll")); |
1bce908db942
Revision: 201003
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parents:
diff
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|
311 |
#endif |
1bce908db942
Revision: 201003
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parents:
diff
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|
312 |
iJitterObsOn = ETrue; |
1bce908db942
Revision: 201003
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parents:
diff
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|
313 |
iFrameLossObsOn = ETrue; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
314 |
iMediaQualityObservingStarted = ETrue; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
315 |
break; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
316 |
|
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
317 |
default: |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
318 |
// if report type is not set |
1bce908db942
Revision: 201003
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parents:
diff
changeset
|
319 |
#ifdef TRACE_JITCALC |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
320 |
RDebug::Print( _L("CMccJitterCalculator::StartObserving iReportType selected default")); |
1bce908db942
Revision: 201003
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parents:
diff
changeset
|
321 |
#endif |
1bce908db942
Revision: 201003
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parents:
diff
changeset
|
322 |
|
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
323 |
err = KErrArgument; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
324 |
break; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
325 |
} |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
326 |
|
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
327 |
return err; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
328 |
} |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
329 |
|
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
330 |
// --------------------------------------------------------------------------- |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
331 |
// CMccJitterCalculator::CancelObserving |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
332 |
// Cancel is called by client |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
333 |
// --------------------------------------------------------------------------- |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
334 |
// |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
335 |
void CMccJitterCalculator::CancelObserving() |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
336 |
{ |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
337 |
#ifdef TRACE_JITCALC |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
338 |
RDebug::Print( _L("CMccJitterCalculator::CancelObserving IN") ); |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
339 |
#endif |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
340 |
|
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
341 |
iJitterObsOn = EFalse; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
342 |
iFrameLossObsOn = EFalse; |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
343 |
iMediaQualityObservingStarted = EFalse; |
32 | 344 |
iStartingSeqNum = KNumZero; |
0
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
345 |
} |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
346 |
|
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
347 |
// --------------------------------------------------------------------------- |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
348 |
// CMccJitterCalculator::SetMediaConfigsL |
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
349 |
// Open aMessage and read media configs |
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// --------------------------------------------------------------------------- |
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// |
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void CMccJitterCalculator::SetMediaConfigsL( const TMMFMessage& aMessage ) |
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{ |
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#ifdef TRACE_JITCALC |
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RDebug::Print( _L("CMccJitterCalculator::SetMediaConfigs IN") ); |
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#endif |
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|
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TMMFMessage* tmp = new ( ELeave ) TMMFMessage( aMessage ); |
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CleanupStack::PushL( tmp ); |
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|
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TMccMediaQualConfBuf configPckg; |
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tmp->ReadData1FromClientL( configPckg ); |
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|
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iMediaConf = configPckg(); |
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|
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// Read data from client |
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iJitterLevelFromClient = iMediaConf.iJitterLevel; |
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iPacketLossFromClient = iMediaConf.iPacketLoss; |
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iReportType = iMediaConf.iReportType; |
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iReportIntervalType = iMediaConf.iReportIntervalType; |
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iReportInterval = iMediaConf.iReportInterval; |
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|
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#ifdef TRACE_JITCALC |
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RDebug::Print( _L("CMccJitterCalculator::SetMediaConfigsL SESSION %d"), iMediaConf.iSessionId ); |
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RDebug::Print( _L("CMccJitterCalculator::SetMediaConfigsL JITTER LEVEL %d"), iMediaConf.iJitterLevel ); |
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RDebug::Print( _L("CMccJitterCalculator::SetMediaConfigsL PACKET LOSS %d"), iMediaConf.iPacketLoss ); |
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RDebug::Print( _L("CMccJitterCalculator::SetMediaConfigsL REPORT TYPE %d"), iMediaConf.iReportType ); |
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RDebug::Print( _L("CMccJitterCalculator::SetMediaConfigsL REPORT INTERVAL TYPE %d"), iMediaConf.iReportIntervalType ); |
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RDebug::Print( _L("CMccJitterCalculator::SetMediaConfigsL REPORT INTERVAL %d"), iMediaConf.iReportInterval ); |
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#endif |
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381 |
|
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CleanupStack::PopAndDestroy( tmp ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CMccJitterCalculator::ResetCounters |
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// Set counters ready to receive packets |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccJitterCalculator::ResetCounters() |
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{ |
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#ifdef TRACE_JITCALC |
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RDebug::Print( _L("CMccJitterCalculator::ResetCounters()") ); |
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#endif |
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395 |
|
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iPacketsReceived = KNumZero; |
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iCurJitter = KNumZero; |
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iPrevPacketTransit = KNumZero; |
32 | 399 |
iCurrentSeqNum = KNumZero; |
400 |
iStartingSeqNum = KNumZero; |
|
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iReceivedPacketCounter = KNumZero; |
|
0
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} |
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403 |
|
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// ----------------------------------------------------------------------------- |
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// CMccJitterCalculator::JitterObserving |
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// Trigger controller. Compares calculated and defined values. |
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// private method |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccJitterCalculator::JitterObserving() |
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{ |
32 | 412 |
#ifdef TRACE_JITCALC |
413 |
RDebug::Print( _L("CMccJitterCalculator::JitterObserving IN") ); |
|
414 |
#endif |
|
415 |
||
416 |
TBool resetValuesForNextReport = EFalse; |
|
417 |
TBool cancelObs = EFalse; |
|
418 |
||
0
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if ( iJitterObsOn ) |
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{ |
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#ifdef TRACE_JITCALC |
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RDebug::Print( _L("CMccJitterCalculator::JitterObserving Jitter level observing ON") ); |
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RDebug::Print( _L("CMccJitterCalculator::JitterObserving jitterlevel %u ms compared to jitter estimate %Lu ms"), |
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iJitterLevelFromClient, ( iCurJitter / KConversionFactor ) ); |
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#endif |
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|
32 | 427 |
CheckJitter( resetValuesForNextReport, cancelObs ); |
428 |
} |
|
429 |
||
430 |
if ( iFrameLossObsOn ) |
|
431 |
{ |
|
432 |
#ifdef TRACE_JITCALC |
|
433 |
RDebug::Print( _L("CMccJitterCalculator::JitterObserving Frame Loss observing ON") ); |
|
434 |
#endif |
|
435 |
||
436 |
CheckPacketLoss( resetValuesForNextReport, cancelObs ); |
|
0
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} |
32 | 438 |
|
439 |
if( resetValuesForNextReport ) |
|
440 |
{ |
|
441 |
// Initialize hometime again |
|
442 |
iHomeTime.HomeTime(); |
|
443 |
#ifdef TRACE_JITCALC |
|
444 |
RDebug::Print ( _L("CMccJitterCalculator::JitterObserving Initialize iHomeTime = %Ld"), iHomeTime.Int64() ); |
|
445 |
#endif |
|
446 |
} |
|
447 |
if( cancelObs ) |
|
448 |
{ |
|
449 |
CancelObserving(); |
|
450 |
} |
|
0
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} |
32 | 452 |
|
0
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453 |
// --------------------------------------------------------------------------- |
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// CMccJitterCalculator::IsObserving |
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// To check if observing is ON |
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// --------------------------------------------------------------------------- |
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// |
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TBool CMccJitterCalculator::IsObserving() const |
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{ |
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return iMediaQualityObservingStarted; |
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} |
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462 |
|
32 | 463 |
// ----------------------------------------------------------------------------- |
464 |
// CMccJitterCalculator::CountPacketLossPercentage |
|
465 |
// Counts packet loss percentage from iStartingSeqNum, iCurrentSeqNum |
|
466 |
// and iReceivedPacketCounter |
|
467 |
// private method |
|
468 |
// ----------------------------------------------------------------------------- |
|
469 |
// |
|
470 |
TInt CMccJitterCalculator::CountPacketLossPercentage() |
|
471 |
{ |
|
472 |
TUint32 numberOfPacketsExpected( 0 ); |
|
473 |
numberOfPacketsExpected = iCurrentSeqNum - iStartingSeqNum; |
|
474 |
||
475 |
if ( ( iPrevExpectedPackets - iPrevPacketsReceived ) == |
|
476 |
( numberOfPacketsExpected - iReceivedPacketCounter ) ) |
|
477 |
{ |
|
478 |
// no packet lost - inorder |
|
479 |
iPrevFerValue = CalculateFer( iPrevFerValue, EFalse, ETrue ); |
|
480 |
} |
|
481 |
else if ( ( iPrevPacketsReceived < iReceivedPacketCounter ) && |
|
482 |
( iPrevExpectedPackets == numberOfPacketsExpected ) ) |
|
483 |
{ |
|
484 |
// no packet lost - late packet - remove FER |
|
485 |
iPrevFerValue = CalculateFer( iPrevFerValue, ETrue, EFalse ); |
|
486 |
} |
|
487 |
else if ( numberOfPacketsExpected > iPrevExpectedPackets ) |
|
488 |
{ |
|
489 |
||
490 |
// packet lost - add FER by number of packets lost. |
|
491 |
// expected = 5, prev_expected 3 => diff 2 but loss is ONE thats why - 1 |
|
492 |
TUint32 maxCalcount = |
|
493 |
numberOfPacketsExpected - iPrevExpectedPackets - 1 < KMaxCalCount ? |
|
494 |
numberOfPacketsExpected - iPrevExpectedPackets - 1 : KMaxCalCount; |
|
495 |
for ( TUint32 i = 0; i < maxCalcount; i++ ) |
|
496 |
{ |
|
497 |
iPrevFerValue = CalculateFer( iPrevFerValue, ETrue, ETrue ); |
|
498 |
} |
|
499 |
} |
|
500 |
||
501 |
iPrevExpectedPackets = numberOfPacketsExpected; |
|
502 |
iPrevPacketsReceived = iReceivedPacketCounter; |
|
503 |
||
504 |
TInt percentage( iPrevFerValue / KRtpFractationAccuracy ); |
|
505 |
return percentage; |
|
506 |
} |
|
507 |
||
508 |
// ----------------------------------------------------------------------------- |
|
509 |
// CMccJitterCalculator::CheckJitter |
|
510 |
// Checks if current jitter level exceeds the jitter level given by the client, |
|
511 |
// and if exceeded, sends the report to client |
|
512 |
// private method |
|
513 |
// ----------------------------------------------------------------------------- |
|
514 |
// |
|
515 |
void CMccJitterCalculator::CheckJitter( TBool& aReportIntervalReached, |
|
516 |
TBool& aReportSent ) |
|
517 |
{ |
|
518 |
#ifdef TRACE_JITCALC |
|
519 |
RDebug::Print( _L("CMccJitterCalculator::CheckJitter IN") ); |
|
520 |
#endif |
|
521 |
||
522 |
// Normalize iCurJitter |
|
523 |
TUint64 modJitter = iCurJitter >> KNum4; |
|
524 |
||
525 |
if ( EMccQualityTimeBased == iReportIntervalType ) |
|
526 |
{ |
|
527 |
// change microsecs to millisecs |
|
528 |
TTimeIntervalMicroSeconds getTime = |
|
529 |
iCurTime.MicroSecondsFrom( iHomeTime ); |
|
530 |
||
531 |
#ifdef TRACE_JITCALC |
|
532 |
RDebug::Print( _L("CMccJitterCalculator::CheckJitter getTime = %Ld"), getTime.Int64() ); |
|
533 |
#endif |
|
534 |
||
535 |
if ( static_cast<TInt64>( iReportInterval ) <= |
|
536 |
( getTime.Int64() / KConversionFactor ) ) |
|
537 |
{ |
|
538 |
// compare clients jitter level to current level |
|
539 |
if ( static_cast<TUint64>( iJitterLevelFromClient ) < |
|
540 |
modJitter ) |
|
541 |
{ |
|
542 |
#ifdef TRACE_JITCALC |
|
543 |
RDebug::Print ( _L("CMccJitterCalculator::CheckJitter jitterlevel %u ms compared to jitter estimate %Lu ms"), |
|
544 |
iJitterLevelFromClient, modJitter ); |
|
545 |
#endif |
|
546 |
||
547 |
TMccRtpEventDataExtended event( ( iCurJitter >> KNum4 ), |
|
548 |
iPacketsReceived, |
|
549 |
iPrevPacketTransit, |
|
550 |
modJitter, |
|
551 |
KNumZero, |
|
552 |
KNumZero ); |
|
553 |
||
554 |
// Informs client via event and cancels jitter observing |
|
555 |
iObserver->SendJitterEvent( event, KErrNone ); |
|
556 |
aReportSent = ETrue; |
|
557 |
} |
|
558 |
aReportIntervalReached = ETrue; |
|
559 |
} |
|
560 |
} |
|
561 |
else if ( EMccQualityPacketBased == iReportIntervalType ) |
|
562 |
{ |
|
563 |
#ifdef TRACE_JITCALC |
|
564 |
RDebug::Print( _L("CMccJitterCalculator::CheckJitter iReceivedPacketCounter: %u"), iReceivedPacketCounter ); |
|
565 |
#endif |
|
566 |
||
567 |
if ( iReportInterval == iReceivedPacketCounter ) |
|
568 |
{ |
|
569 |
// compare clients jitter level to current level |
|
570 |
if ( iJitterLevelFromClient < modJitter ) |
|
571 |
{ |
|
572 |
#ifdef TRACE_JITCALC |
|
573 |
RDebug::Print( _L("CMccJitterCalculator::CheckJitter jitterlevel %u ms compared to jitter estimate %Lu ms"), |
|
574 |
iJitterLevelFromClient, modJitter ); |
|
575 |
#endif |
|
576 |
||
577 |
TMccRtpEventDataExtended event( ( iCurJitter >> KNum4 ), |
|
578 |
iPacketsReceived, |
|
579 |
iPrevPacketTransit, |
|
580 |
modJitter, |
|
581 |
KNumZero, |
|
582 |
KNumZero ); |
|
583 |
||
584 |
// Informs client via event and cancels jitter observing |
|
585 |
iObserver->SendJitterEvent( event, KErrNone ); |
|
586 |
aReportSent = ETrue; |
|
587 |
} |
|
588 |
aReportIntervalReached = ETrue; |
|
589 |
} |
|
590 |
} |
|
591 |
else |
|
592 |
{ |
|
593 |
#ifdef TRACE_JITCALC |
|
594 |
RDebug::Print( _L("CMccJitterCalculator::CheckJitter Report type is not valid!") ); |
|
595 |
#endif |
|
596 |
||
597 |
TMccRtpEventDataExtended event( ( iCurJitter >> KNum4 ), |
|
598 |
iPacketsReceived, |
|
599 |
iPrevPacketTransit, |
|
600 |
KNumZero, |
|
601 |
KNumZero, |
|
602 |
KNumZero ); |
|
603 |
||
604 |
iObserver->SendJitterEvent( event, KErrArgument ); |
|
605 |
aReportSent = ETrue; |
|
606 |
} |
|
607 |
||
608 |
} |
|
609 |
||
610 |
// ----------------------------------------------------------------------------- |
|
611 |
// CMccJitterCalculator::CheckPacketLoss |
|
612 |
// Checks if current packet loss level exceeds the packet loss level |
|
613 |
// given by the client, and if exceeded, sends the report to client |
|
614 |
// private method |
|
615 |
// ----------------------------------------------------------------------------- |
|
616 |
// |
|
617 |
void CMccJitterCalculator::CheckPacketLoss( TBool& aReportIntervalReached, |
|
618 |
TBool& aReportSent ) |
|
619 |
{ |
|
620 |
#ifdef TRACE_JITCALC |
|
621 |
RDebug::Print( _L("CMccJitterCalculator::CheckPacketLoss IN") ); |
|
622 |
#endif |
|
623 |
||
624 |
TInt packetLossPercentage = CountPacketLossPercentage(); |
|
625 |
||
626 |
if ( EMccQualityTimeBased == iReportIntervalType ) |
|
627 |
{ |
|
628 |
// change microsecs to millisecs |
|
629 |
TTimeIntervalMicroSeconds getTime = |
|
630 |
iCurTime.MicroSecondsFrom( iHomeTime ); |
|
631 |
||
632 |
#ifdef TRACE_JITCALC |
|
633 |
RDebug::Print( _L("CMccJitterCalculator::CheckPacketLoss getTime = %Ld"), getTime.Int64() ); |
|
634 |
#endif |
|
635 |
||
636 |
if ( static_cast<TInt64>( iReportInterval ) <= |
|
637 |
( getTime.Int64() / KConversionFactor ) ) |
|
638 |
{ |
|
639 |
// If the packet loss percentage was exceeded |
|
640 |
if( iPacketLossFromClient < packetLossPercentage ) |
|
641 |
{ |
|
642 |
#ifdef TRACE_JITCALC |
|
643 |
RDebug::Print( _L("CMccJitterCalculator::CheckPacketLoss Packet Loss From Client %u compared to Current Packet Loss %u "), |
|
644 |
iPacketLossFromClient, packetLossPercentage ); |
|
645 |
#endif |
|
646 |
||
647 |
TMccRtpEventDataExtended event( ( iCurJitter >> KNum4 ), |
|
648 |
iPacketsReceived, |
|
649 |
iPrevPacketTransit, |
|
650 |
KNumZero, |
|
651 |
packetLossPercentage, |
|
652 |
packetLossPercentage ); |
|
653 |
||
654 |
// Informs client via event and cancels jitter observing |
|
655 |
iObserver->SendJitterEvent( event, KErrNone ); |
|
656 |
aReportSent = ETrue; |
|
657 |
} |
|
658 |
aReportIntervalReached = ETrue; |
|
659 |
} |
|
660 |
} |
|
661 |
else if ( EMccQualityPacketBased == iReportIntervalType ) |
|
662 |
{ |
|
663 |
||
664 |
#ifdef TRACE_JITCALC |
|
665 |
RDebug::Print( _L("CMccJitterCalculator::CheckPacketLoss EMccQualityPacketBased == iReportIntervalType") ); |
|
666 |
RDebug::Print( _L("CMccJitterCalculator::CheckPacketLoss iReceivedPacketCounter: %u"), iReceivedPacketCounter ); |
|
667 |
#endif |
|
668 |
||
669 |
if ( iReportInterval == iReceivedPacketCounter ) |
|
670 |
{ |
|
671 |
// If the packet loss percentage was exceeded |
|
672 |
if( iPacketLossFromClient < packetLossPercentage ) |
|
673 |
{ |
|
674 |
#ifdef TRACE_JITCALC |
|
675 |
RDebug::Print( _L("CMccJitterCalculator::CheckPacketLoss Packet Loss From Client %u compared to Current Packet Loss %u "), |
|
676 |
iPacketLossFromClient, packetLossPercentage ); |
|
677 |
#endif |
|
678 |
||
679 |
TMccRtpEventDataExtended event( ( iCurJitter >> KNum4 ), |
|
680 |
iPacketsReceived, |
|
681 |
iPrevPacketTransit, |
|
682 |
KNumZero, |
|
683 |
packetLossPercentage, |
|
684 |
packetLossPercentage ); |
|
685 |
||
686 |
// Informs client via event and cancels jitter observing |
|
687 |
iObserver->SendJitterEvent( event, KErrNone ); |
|
688 |
aReportSent = ETrue; |
|
689 |
} |
|
690 |
aReportIntervalReached = ETrue; |
|
691 |
} |
|
692 |
} |
|
693 |
else |
|
694 |
{ |
|
695 |
#ifdef TRACE_JITCALC |
|
696 |
RDebug::Print( _L("CMccJitterCalculator::CheckPacketLoss Report type is not valid!") ); |
|
697 |
#endif |
|
698 |
||
699 |
TMccRtpEventDataExtended event( ( iCurJitter >> KNum4 ), |
|
700 |
iPacketsReceived, |
|
701 |
iPrevPacketTransit, |
|
702 |
KNumZero, |
|
703 |
KNumZero, |
|
704 |
KNumZero ); |
|
705 |
||
706 |
iObserver->SendJitterEvent( event, KErrArgument ); |
|
707 |
aReportSent = ETrue; |
|
708 |
} |
|
709 |
} |
|
710 |
||
711 |
// ----------------------------------------------------------------------------- |
|
712 |
// CMccJitterCalculator::CalculateFer |
|
713 |
// Calculates a new FER value |
|
714 |
// ----------------------------------------------------------------------------- |
|
715 |
// |
|
716 |
TUint32 CMccJitterCalculator::CalculateFer( TUint32 aPrevValue, |
|
717 |
TBool aAdd, TBool aFlag ) |
|
718 |
{ |
|
719 |
TUint32 ret = 0; |
|
720 |
TInt64 temp_add = 0; |
|
721 |
||
722 |
temp_add = aAdd * KNumHundred * KRtpFractationAccuracy; |
|
723 |
||
724 |
TInt64 diff = temp_add - (TInt64)aPrevValue; |
|
725 |
TInt32 tempValue = static_cast<TInt32>( diff / KDivider ); |
|
726 |
||
727 |
if ( aFlag ) |
|
728 |
{ |
|
729 |
ret = TUint32( aPrevValue + tempValue ); |
|
730 |
} |
|
731 |
else |
|
732 |
{ |
|
733 |
if ( aPrevValue > tempValue ) |
|
734 |
{ |
|
735 |
ret = TUint32( aPrevValue - tempValue ); |
|
736 |
} |
|
737 |
else |
|
738 |
{ |
|
739 |
// removed FER would have gone over thus zero |
|
740 |
ret = 0; |
|
741 |
} |
|
742 |
} |
|
743 |
||
744 |
return ret; |
|
745 |
} |
|
746 |
||
0
1bce908db942
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
747 |
// End of File |