--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/callcontinuity/vcchotrigger/src/vccwlansignallevelhandler.cpp Wed Sep 01 12:29:57 2010 +0100
@@ -0,0 +1,442 @@
+/*
+* Copyright (c) 2007-2008 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: Implementation of the WLAN signal level handler
+*
+*/
+
+
+
+#include <wlanmgmtclient.h>
+#include "vccwlansignallevelhandler.h"
+#include "rubydebug.h"
+#include "vccengpsproperty.h"
+#include <ccpdefs.h>
+
+// Min. signal strength.
+static const TInt32 KStrengthMin = 110;
+
+const TInt KWlanPollIntervalLowSignal= 1000000;
+const TInt KWlanPollIntervalHighSignal= 5000000;
+
+// ---------------------------------------------------------------------------
+// C++ destructor.
+// ---------------------------------------------------------------------------
+//
+CVccWlanSignalLevelHandler::~CVccWlanSignalLevelHandler()
+ {
+ // Cancel any request, if outstanding
+ Cancel();
+#ifndef __WINS__
+ delete iWlanMgmt;
+#endif
+ }
+
+// ---------------------------------------------------------------------------
+// Symbian constructor.
+// ---------------------------------------------------------------------------
+//
+CVccWlanSignalLevelHandler* CVccWlanSignalLevelHandler::NewL(
+ MVccSignalLevelObserver& aObserver,
+ const TSignalLevelParams& aParams, CVccEngPsProperty& aPsProperty )
+ {
+ CVccWlanSignalLevelHandler* self =
+ CVccWlanSignalLevelHandler::NewLC( aObserver, aParams, aPsProperty );
+
+ CleanupStack::Pop( self );
+
+ return self;
+ }
+
+// ---------------------------------------------------------------------------
+// Symbian constructor.
+// ---------------------------------------------------------------------------
+//
+CVccWlanSignalLevelHandler* CVccWlanSignalLevelHandler::NewLC(
+ MVccSignalLevelObserver& aObserver,
+ const TSignalLevelParams& aParams, CVccEngPsProperty& aPsProperty )
+ {
+ CVccWlanSignalLevelHandler * self =
+ new ( ELeave ) CVccWlanSignalLevelHandler( aObserver, aParams, aPsProperty );
+
+ CleanupStack::PushL( self );
+ self->ConstructL();
+ return self;
+ }
+
+// ---------------------------------------------------------------------------
+// C++ constructor.
+// ---------------------------------------------------------------------------
+//
+CVccWlanSignalLevelHandler::CVccWlanSignalLevelHandler(
+ MVccSignalLevelObserver& aObserver,
+ const TSignalLevelParams& aParams, CVccEngPsProperty& aPsProperty )
+ : CVccSignalLevelHandler( aObserver, aParams ), iVccPsp( aPsProperty )
+ {
+ iManualHoDone = EFalse;
+ }
+
+// ---------------------------------------------------------------------------
+// Symbian second-phase constructor.
+// ---------------------------------------------------------------------------
+//
+void CVccWlanSignalLevelHandler::ConstructL()
+ {
+ RUBY_DEBUG_BLOCKL( "CVccWlanSignalLevelHandler::ConstructL" );
+
+ CVccSignalLevelHandler::ConstructL();
+#ifndef __WINS__
+ //WlanMgmtClient is not started when the phone is not f. ex. labeled
+ TRAP_IGNORE( iWlanMgmt = CWlanMgmtClient::NewL() );
+#endif
+ }
+
+// ---------------------------------------------------------------------------
+// Enable notifications.
+// ---------------------------------------------------------------------------
+//
+void CVccWlanSignalLevelHandler::EnableNotificationsL()
+ {
+ RUBY_DEBUG_BLOCK( "CVccWlanSignalLevelHandler::EnableNotificationsL" );
+#ifndef __WINS__
+ if( iWlanMgmt )
+ {
+ TInt error = iWlanMgmt->UpdateRssNotificationBoundary(
+ iParams.iLowLevel,
+ iParams.iLowLevel - iParams.iHighLevel );
+
+ User::LeaveIfError( error );
+
+ iWlanMgmt->ActivateNotificationsL( *this );
+ }
+#endif
+ }
+
+// ---------------------------------------------------------------------------
+// Disable notifications.
+// ---------------------------------------------------------------------------
+//
+void CVccWlanSignalLevelHandler::DisableNotifications()
+ {
+ RUBY_DEBUG_BLOCK( "CVccWlanSignalLevelHandler::DisableNotificationsL" );
+#ifndef __WINS__
+ if( iWlanMgmt )
+ {
+ iWlanMgmt->CancelNotifications();
+ }
+#endif
+ }
+
+// ---------------------------------------------------------------------------
+// Get signal strength.
+// ---------------------------------------------------------------------------
+//
+void CVccWlanSignalLevelHandler::GetStrength()
+ {
+
+ RUBY_DEBUG_BLOCK( "CVccWlanSignalLevelHandler::GetStrength" );
+
+ iStrength = KStrengthMin;
+#ifndef __WINS__
+ if( iWlanMgmt )
+ {
+ iWlanMgmt->GetConnectionSignalQuality( iStrength );
+ }
+#endif
+ RUBY_DEBUG1( " -strength = %d", iStrength );
+
+ // Because the RMobilePhone used in GSM is asynchronous we need here
+ // to signal that the request is complete (in order to continue
+ // processing stuff in RunL)
+
+ TRequestStatus *sP = &iStatus;
+
+ User::RequestComplete( sP, KErrNone );
+ }
+
+// ---------------------------------------------------------------------------
+// Cancel outstanding GetStrength.
+// We do not need to do anything since WLAN GetStrength is synchronous.
+// ---------------------------------------------------------------------------
+//
+void CVccWlanSignalLevelHandler::CancelGetStrength()
+ {
+ RUBY_DEBUG_BLOCK( "CVccWlanSignalLevelHandler::CancelGetStrength" );
+ }
+
+// ---------------------------------------------------------------------------
+// Handles indication of changed RSS value.
+// ---------------------------------------------------------------------------
+//
+void CVccWlanSignalLevelHandler::RssChanged( TWlanRssClass aRssClass, TUint aRss )
+ {
+ RUBY_DEBUG_BLOCK( "CVccWlanSignalLevelHandler::RssChanged" );
+ RUBY_DEBUG2( " -class = %d rss = %d", aRssClass, aRss);
+
+ // Do some basic check
+ // Zero (0) is not acceptable strength (too good?).
+
+ iStrength = aRss ? aRss : KStrengthMin;
+ StrengthChanged();
+ }
+
+// ---------------------------------------------------------------------------
+// Handles BSSID has changed (i.e. AP handover) situation.
+// ---------------------------------------------------------------------------
+//
+void CVccWlanSignalLevelHandler::BssidChanged( TWlanBssid& aNewBSSID )
+ {
+ RUBY_DEBUG_BLOCK( "CVccWlanSignalLevelHandler::BssidChanged" );
+ RUBY_DEBUG1( " -aNewBSSID = %S", &aNewBSSID );
+
+ iStrength = KStrengthMin;
+#ifndef __WINS__
+ if( iWlanMgmt )
+ {
+ iWlanMgmt->GetConnectionSignalQuality( iStrength );
+ }
+#endif
+
+ StrengthChanged();
+ }
+
+// ---------------------------------------------------------------------------
+// Handles lost of one or more networks
+// ---------------------------------------------------------------------------
+//
+void CVccWlanSignalLevelHandler::OldNetworksLost()
+ {
+ RUBY_DEBUG_BLOCK( "CVccWlanSignalLevelHandler::OldNetworksLost" );
+
+ iStrength = KStrengthMin;
+#ifndef __WINS__
+ if( iWlanMgmt )
+ {
+ iWlanMgmt->GetConnectionSignalQuality( iStrength );
+ }
+#endif
+ StrengthChanged();
+
+ TVccHoStatus hoStatus( EVccHoStateUnknown );
+ iVccPsp.GetCurrentHoStatus( hoStatus );
+
+ RUBY_DEBUG1("Current HoStatus; %d", hoStatus);
+
+ if( hoStatus == EVccCsToPsHoStarted || hoStatus == EVccCsToPsHoInprogress
+ || hoStatus == EVccHoUnavailable )
+ {
+ iVccPsp.NotifySubscriberL( EVccCsToPsHoFailure, ECCPErrorNetworkOutOfOrder );
+ }
+ }
+
+// ---------------------------------------------------------------------------
+// Notify observer that the signal level has been changed.
+// ---------------------------------------------------------------------------
+//
+void CVccWlanSignalLevelHandler::NotifyChanges(
+ TInt32 aSignalStrength,
+ MVccSignalLevelObserver::TSignalStrengthClass aClass )
+ {
+ RUBY_DEBUG_BLOCK( "CVccWlanSignalLevelHandler::NotifyChanges" );
+ RUBY_DEBUG1( " -New strength = -%d dBm", aSignalStrength );
+
+ iObserver.WlanSignalChanged( aSignalStrength, aClass );
+ }
+
+
+// ---------------------------------------------------------------------------
+// Handles getting the signal strength and notifying the observer about
+// strength changes.
+// ---------------------------------------------------------------------------
+
+void CVccWlanSignalLevelHandler::RunL()
+ {
+ RUBY_DEBUG_BLOCK( "CVccWlanSignalLevelHandler::RunL" );
+
+ // Zero (0) is not acceptable.
+ if ( !iStrength )
+ {
+ RUBY_DEBUG0( " -0 strength not acceptable, setting to KStrengthMin");
+ iStrength = KStrengthMin;
+ }
+
+ RUBY_DEBUG3( " -iStrength = %d iState = %d iOp = %d", iStrength, iState, iOperation );
+
+ switch ( iOperation )
+ {
+ case EOperationGet:
+ {
+
+ // We are in the Get-mode to get the signal strength.
+ // If the strength is < than the high level (== the strength
+ // is good), start timer to check if we are still in good level
+ // after the timer completes.
+ // The same is done if we have a low level (== bad).
+
+ RUBY_DEBUG0( " -EOperationGet");
+
+ if ( iStrength <= iParams.iHighLevel && iStrength > 0 )
+ {
+ RUBY_DEBUG0( " set state = EStrengthHigh, op = EOperationWait" );
+
+ After( iParams.iHighTimeout );
+ iState = EStrengthHigh;
+ iOperation = EOperationWait;
+ }
+ else if ( iStrength >= iParams.iLowLevel )
+ {
+ RUBY_DEBUG0( " set state = EStrengtLow, op = EOperationWait" );
+ After( iParams.iLowTimeout );
+ iState = EStrengthLow;
+ iOperation = EOperationWait;
+ }
+ else
+ {
+ RUBY_DEBUG0( " strength between low and high, set op = EOperationNone" );
+
+ //WLAN signal is almost weak, check again with low interval
+ After( KWlanPollIntervalLowSignal );
+ iOperation = EOperationNone;
+ iState = EStrengthLow;
+ // PCLint
+ }
+ break;
+ }
+
+ case EOperationWait:
+ {
+
+ // Timer has completed. Check the signal level again.
+
+ RUBY_DEBUG0( " -EOperationWait" );
+ RUBY_DEBUG0( " set op = EOperationComplete" );
+ GetStrength();
+
+ SetActive();
+
+ iOperation = EOperationComplete;
+
+ break;
+ }
+
+ case EOperationComplete:
+ {
+ // Checking signal strength is now done.
+ // Notify our observer (if needed).
+
+ RUBY_DEBUG1( " -EOperationComplete, iStrength = %d", iStrength );
+
+ // Do we have a good signal level?
+ if ( iStrength <= iParams.iHighLevel && iStrength > 0 && iState == EStrengthHigh )
+ {
+ RUBY_DEBUG0( " -if ( iStrength <= iParams.iHighLevel" );
+ NotifyChanges( iStrength, MVccSignalLevelObserver::ESignalClassNormal );
+ }
+ // Or do we have a bad signal level?
+ else if ( iStrength >= iParams.iHighLevel && iState == EStrengthLow )
+ {
+ RUBY_DEBUG0( " -else if ( iStrength >= iParams.iHighLevel" );
+ NotifyChanges( iStrength, MVccSignalLevelObserver::ESignalClassWeak );
+ }
+ else
+ {
+ // PCLint
+ }
+
+ TTimeIntervalMicroSeconds32 interval;
+
+ if( iState == EStrengthHigh )
+ {
+ RUBY_DEBUG0( " high interval" );
+ interval = KWlanPollIntervalHighSignal;
+ }
+ else
+ {
+ RUBY_DEBUG0( " low interval" )
+ interval = KWlanPollIntervalLowSignal;
+ }
+
+ After( interval );
+
+ iState = EStrengthUnknown;
+ iOperation = EOperationNone;
+
+ break;
+ }
+
+ case EOperationNone:
+ {
+ RUBY_DEBUG0( " -EOperationNone" );
+
+ //if manual HO is done then there is no need for checking signal strength so much,
+ //so stopping the loop
+ if( !iManualHoDone )
+ {
+ RUBY_DEBUG0( " -call GetStrength()" );
+ GetStrength();
+ SetActive();
+ RUBY_DEBUG1( " -iStrength = %d, set op = EOperationGet \
+ state = EStrengthUnknown", iStrength );
+ iOperation = EOperationGet;
+ }
+ break;
+
+ }
+
+
+ default:
+ {
+ break;
+ }
+ }
+
+ }
+
+// ---------------------------------------------------------------------------
+// Lets Wlan Signal Level Handler know is manual handover done or not done
+//
+// ---------------------------------------------------------------------------
+
+
+void CVccWlanSignalLevelHandler::SetManualHoDone( TBool aValue )
+ {
+ RUBY_DEBUG_BLOCK( "CVccWlanSignalLevelHandler::SetManualHoDone" );
+ iManualHoDone = aValue;
+ }
+
+
+// ---------------------------------------------------------------------------
+// Cancel outstanding requests.
+// ---------------------------------------------------------------------------
+//
+void CVccWlanSignalLevelHandler::DoCancel()
+ {
+ RUBY_DEBUG_BLOCK( "CVccSignalLevelHandler::DoCancel" );
+ switch ( iOperation )
+ {
+ case EOperationWait:
+ case EOperationNone:
+ {
+ RUBY_DEBUG0( "EOperationWait / EOperationNone" );
+ CTimer::DoCancel();
+
+ break;
+ }
+
+
+ default:
+ {
+ break;
+ }
+ }
+ }