bluetooth/btstack/linkmgr/SCOSAP.cpp
author Pat Downey <patd@symbian.org>
Wed, 01 Sep 2010 12:38:54 +0100
branchRCL_3
changeset 24 e9b924a62a66
parent 0 29b1cd4cb562
permissions -rw-r--r--
Revert incorrect RCL_3 drop: Revision: 201031 Kit: 201035
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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// Copyright (c) 2003-2009 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:
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// Implements the SCO SAP class
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// 
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//
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#include <bluetooth/logger.h>
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#include <bt_sock.h>
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#include <bluetooth/hci/hciframe.h>
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#include "SCOSAP.h"
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#include "physicallinksmanager.h"
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#include "physicallinks.h"
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#include "hcifacade.h"
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#include "linkutil.h"
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#include "linkmuxer.h"
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#ifdef __FLOG_ACTIVE
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_LIT8(KLogComponent, LOG_COMPONENT_HCI_CSCOLINK);
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#endif
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CSCOLink* CSCOLink::NewLC(CPhysicalLinksManager& aConnectionMan, CPhysicalLink* aConnection)
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	{
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	LOG_STATIC_FUNC
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	CSCOLink* s = new(ELeave) CSCOLink(aConnectionMan, aConnection);
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	CleanupStack::PushL(s);
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	s->ConstructL();
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	return s;
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	}
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CSCOLink* CSCOLink::NewL(CPhysicalLinksManager& aLinksMan, CPhysicalLink* aPhysicalLink)
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	{
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	LOG_STATIC_FUNC
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	CSCOLink* s = NewLC(aLinksMan, aPhysicalLink);
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	CleanupStack::Pop();
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	return s;
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	}
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CSCOLink::CSCOLink(CPhysicalLinksManager& aLinksMan, CPhysicalLink* aPhysicalLink)
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: CBTSynchronousLink(aLinksMan, aPhysicalLink, ESCOLink)
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	{
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	LOG_FUNC
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	iUserHVPacketTypes = EAnySCOPacket;
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	}
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void CSCOLink::ConstructL()
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	{
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	LOG_FUNC
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	CBTSynchronousLink::ConstructL();
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	}
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CSCOLink::~CSCOLink()
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	{
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	LOG_FUNC
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	}
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TInt CSCOLink::GetOption(TUint /*aLevel*/, TUint /*aName*/, TDes8& /*aOption*/) const
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	{
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	LOG_FUNC
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	return KErrNotSupported;
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	}
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TInt CSCOLink::SAPSetOption(TUint aLevel,TUint aName,const TDesC8 &aOption)
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/**
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	Case ESyncSetUserPacketTypes:
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	Store the user specified pakcet types if at least one of the SCO packet types is set
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	The packet types bitmask will be passed as a parameter of CPhysicalLink::Connect(const TBTSyncPackets aUserPacketTypes)
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	in DoActiveOpenL()
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*/
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	{
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	LOG_FUNC
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	TInt rerr = KErrNone;
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	if(aLevel != KSolBtSCO)
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		{
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		rerr = KErrNotSupported;
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		}
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	if(rerr == KErrNone)
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		{
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		switch (aName)
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			{
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			case ESCOSetUserPacketTypes:
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				{
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				TUint16 optHVPacketTypes = *reinterpret_cast<const TUint16*>(aOption.Ptr());
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				if (EAnySCOPacket & optHVPacketTypes) //make sure at least one HV type is supported
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					{
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					iUserHVPacketTypes = static_cast<TUint16>(optHVPacketTypes & (EAnySCOPacket));//Just SCO packet types are stored
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					iUserHVPacketTypes /= EPacketsHV1;
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					}
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				else
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					{
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					rerr = KErrNotSupported;
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					}
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				break;
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				}
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			case ESyncUserPacketTypes:
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				{
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				TUint16 optHVPacketTypes = *reinterpret_cast<const TUint16*>(aOption.Ptr());
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				if(TBTSyncPackets::ESyncAnySCOPacket & optHVPacketTypes) //make sure at least one HV type is supported
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					{
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					iUserHVPacketTypes = static_cast<TUint16>(optHVPacketTypes & (TBTSyncPackets::ESyncAnySCOPacket));//Just SCO packet types are stored
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					}
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				else
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					{
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					rerr = KErrNotSupported;
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					}
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				break;
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				}
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			default:
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				rerr = KErrNotSupported;
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			}
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		}
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	return rerr;
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	}
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TUint CSCOLink::DoWrite(const TDesC8& aData, TUint /*aOptions*/, TSockAddr* /*aAddr*/)
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/**
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	Actually do the write - has been checked for length
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	In future could write data on a specific SCO "subchannel" if we do that sort of thing
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	between devices - possibly then use aAddr or aOptions
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**/
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	{
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	LOG_FUNC
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	TUint retVal = 0;
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	TInt err = KErrNone;
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#ifdef STACK_SCO_DATA
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	// Trim length of data if necessary
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	TPtrC8 data = aData.Left(CHctlSynchronousDataFrame::KHCTLMaxSynchronousDataSize);
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	if (iLinksMan.LinkManagerProtocol().LinkMuxer().CanWriteSCOData())
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		{
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		// for now just try to write - if it fails then it doesnt matter - its
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		// a lot more *s*ynchronous than sticking it in a queue ;-)
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		LOG(_L("CSCOLink: Can write SCO data..."));
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		delete iOutboundSCOFrame;
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		iOutboundSCOFrame = NULL;
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		const CHCIFacade& facade = iLinksMan.HCIFacade(); 
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		TRAP(err, iOutboundSCOFrame = facade.NewSynchronousDataFrameL(static_cast<TUint8>(data.Length())));
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		if(iOutboundSCOFrame && err == KErrNone)
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			{
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			// got the frame - so go and use it
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			facade.FormatSCOData(*iOutboundSCOFrame, iHandle, data);
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			if (facade.WriteSCOData(*iOutboundSCOFrame) == KErrNone)
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				{
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				retVal = data.Length(); // we sent this many bytes
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				}
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			}
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		}
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	else
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		{
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		LOG(_L("CSCOLink: ERROR Cannot write SCO data."));
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		Socket()->Error(((err == KErrNone) ? KErrInUse : err), MSocketNotify::EErrorSend);
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		}
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#else
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	LOG(_L("CSCOLink: ERROR SCO data via stack not supported."))
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	Socket()->Error(KErrNotSupported, MSocketNotify::EErrorSend);
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#endif
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	return retVal;
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	}
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void CSCOLink::PacketTypeChange(THCIErrorCode aErr, THCIConnHandle aConnH, TUint16 aNewPacket)
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	{
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	LOG_FUNC
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	iState->PacketTypeChange(*this, aErr, aConnH, aNewPacket);
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	}
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TBool CSCOLink::IsLinkProbablyPossible()
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	{
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	LOG_FUNC
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	return Baseband().IsSCOPossible();
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	}
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TInt CSCOLink::MakeConnection(CPhysicalLink* aPhysLink)
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	{
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	LOG_FUNC
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	// Stores packets as sync packet types, uses packets as SCO types.
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	return aPhysLink->SCOConnect(iUserHVPacketTypes << KSCOvsSyncHVOffset);
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	}
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TDes8& CSCOLink::InboundFrame()
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	{
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	LOG_FUNC
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	return iInboundSCOFrame;
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	}
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void CSCOLink::SetExtOptions(TBTSyncConnectOpts /*aSyncOpts*/)
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	{
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	LOG_FUNC
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	}