1 // Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef LINKMUXER_H__

    17 #define LINKMUXER_H__

    18 

    19 #include <e32base.h>

    20 #include "linkqitem.h"

    21 #include "linkflowcontrol.h"

    22 #include "linkutil.h"

    23 #include <bluetooth/linkmuxnotifier.h>

    24 #include <bluetooth/hci/hctlchannelobserver.h>

    25 

    26 class CHCIFacade;

    27 class CHCILinkMgr;

    28 class MHCICommandQueue;

    29 class CACLDataQController;

    30 class CLinkMgrProtocol;

    31 class CHCICmdQController;

    32 

    33 /**

    34 	Regulates the issuing  of buffers send down the same channel.

    35 

    36 	The mux decides and notifies the appropriate Q to send data when the wire

    37 	is free. The mux will need to be fed with 'the wire is free' events and 

    38 	trigger events that will indicate reception of events (external) 

    39 	corresponding to the different Qs -(like NumCompletedPackets, Write 

    40 	Data CommandComplete etc)

    41 */

    42 NONSHARABLE_CLASS(CLinkMuxer) : public CBase

    43 	{

    44 public:

    45 	static CLinkMuxer* NewL(CLinkMgrProtocol& aLinkMgrProtocol, CHCIFacade& aHCIFacade);

    46 	void ObtainHostControllerBufferSizeL();

    47 	void RecordHostControllerToHostFlowControl(TBool aFlowFlag);

    48 	CACLDataQController* HandleLocalReadBufferSizeResult(TUint16 aAclMaxLen,

    49       TUint8 /*aScoMaxLen*/,TUint16 aNoACL,TUint16 /*aNoSCO*/);

    50 	TInt ACLPacketMTU() const;

    51 

    52 	CACLDataQController& DataQController() const {return *iDataController;};

    53 	void ChannelsFree(THCITransportChannel aChannel); // notification of free channels

    54 	void ChannelsClosed(THCITransportChannel aChannel); // notification of closed channels

    55 	static TInt TryToSendCallBackStatic(TAny* aCLinkMuxer);

    56 	void TryToSend();	// request to send on certain channels

    57 #ifdef STACK_SCO_DATA

    58 	TBool CanWriteSCOData();

    59 #endif

    60 	~CLinkMuxer();

    61 

    62 private:

    63 	void DataTrigger();

    64 	void CommandTrigger();

    65 	void ConstructL();

    66 	CLinkMuxer(CLinkMgrProtocol& aLinkMgrProtocol, CHCIFacade& aHCIFacade);

    67 	void DoSend(/*THCITransportChannel aChannel*/);	// request to send on certain channels

    68 private:

    69 // owned resources

    70 	CHCICmdQController*	iCommandController;

    71 	CACLDataQController* iDataController;

    72 	CAsyncCallBack*			iSendCallBack;

    73 // non-owned resources

    74 	CHCIFacade&				iHCIFacade;

    75 	THCITransportChannel	iChannelsFree;

    76     TFlowControlMode		iFlowControlMode;

    77 	CLinkMgrProtocol&		iLinkMgrProtocol;

    78 	TInt					iACLPacketMTU;

    79 	};

    80 

    81 #endif