// Copyright (c) 2001-2009 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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//+
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+
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#ifndef LINKMUXER_H__+
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#define LINKMUXER_H__+
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+
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#include <e32base.h>+
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#include "linkqitem.h"+
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#include "linkflowcontrol.h"+
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#include "linkutil.h"+
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#include <bluetooth/linkmuxnotifier.h>+
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#include <bluetooth/hci/hctlchannelobserver.h>+
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+
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class CHCIFacade;+
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class CHCILinkMgr;+
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class MHCICommandQueue;+
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class CACLDataQController;+
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class CLinkMgrProtocol;+
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class CHCICmdQController;+
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+
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/**+
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	Regulates the issuing  of buffers send down the same channel.+
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+
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	The mux decides and notifies the appropriate Q to send data when the wire+
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	is free. The mux will need to be fed with 'the wire is free' events and +
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	trigger events that will indicate reception of events (external) +
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	corresponding to the different Qs -(like NumCompletedPackets, Write +
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	Data CommandComplete etc)+
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*/+
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NONSHARABLE_CLASS(CLinkMuxer) : public CBase+
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	{+
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public:+
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	static CLinkMuxer* NewL(CLinkMgrProtocol& aLinkMgrProtocol, CHCIFacade& aHCIFacade);+
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	void ObtainHostControllerBufferSizeL();+
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	void RecordHostControllerToHostFlowControl(TBool aFlowFlag);+
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	CACLDataQController* HandleLocalReadBufferSizeResult(TUint16 aAclMaxLen,+
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      TUint8 /*aScoMaxLen*/,TUint16 aNoACL,TUint16 /*aNoSCO*/);+
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	TInt ACLPacketMTU() const;+
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+
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	CACLDataQController& DataQController() const {return *iDataController;};+
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	void ChannelsFree(THCITransportChannel aChannel); // notification of free channels+
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	void ChannelsClosed(THCITransportChannel aChannel); // notification of closed channels+
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	static TInt TryToSendCallBackStatic(TAny* aCLinkMuxer);+
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	void TryToSend();	// request to send on certain channels+
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#ifdef STACK_SCO_DATA+
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	TBool CanWriteSCOData();+
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#endif+
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	~CLinkMuxer();+
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+
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private:+
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	void DataTrigger();+
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	void CommandTrigger();+
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	void ConstructL();+
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	CLinkMuxer(CLinkMgrProtocol& aLinkMgrProtocol, CHCIFacade& aHCIFacade);+
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	void DoSend(/*THCITransportChannel aChannel*/);	// request to send on certain channels+
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private:+
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// owned resources+
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	CHCICmdQController*	iCommandController;+
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	CACLDataQController* iDataController;+
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	CAsyncCallBack*			iSendCallBack;+
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// non-owned resources+
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	CHCIFacade&				iHCIFacade;+
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	THCITransportChannel	iChannelsFree;+
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    TFlowControlMode		iFlowControlMode;+
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	CLinkMgrProtocol&		iLinkMgrProtocol;+
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	TInt					iACLPacketMTU;+
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	};+
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+
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#endif+
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