--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/telephonyprotocols/rawipnif/inc/BcaController.h	Tue Feb 02 01:41:59 2010 +0200
@@ -0,0 +1,145 @@
+// Copyright (c) 2004-2009 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:
+// Defines the interface to the BCA & flow control.
+// 
+//
+
+/**
+ @file 
+*/
+
+#ifndef BCACONTROLLER_H
+#define BCACONTROLLER_H
+
+#include <e32base.h>
+#include <c32comm.h>
+
+#include "MControllerObserver.h"
+#include "bttlog.h"
+#include "Constants.h"
+
+#ifdef RAWIP_HEADER_APPENDED_TO_PACKETS
+#include "IPTagHeader.h"
+#endif // RAWIP_HEADER_APPENDED_TO_PACKETS
+
+class CBttLogger;
+
+/** 
+@internalComponent 
+*/	
+class CBcaController : public CBase
+	{
+public:
+	CBcaController(MControllerObserver& aObserver, CBttLogger* aTheLogger);
+	void BaseConstructL();
+	~CBcaController();
+
+public: // Flow Control
+	void UpdateInternalFlowFlag(TFlowControl aValue);
+	void UpdateContextStateFlag(TBool aValue);
+	TBool IsTxPossible();
+
+public:
+	virtual void StartL() = 0;
+	virtual void Stop(TInt aError = KErrNone) = 0;
+
+#ifdef RAWIP_HEADER_APPENDED_TO_PACKETS
+public: //tag headers
+	void SetType(TUint16 aType);
+	void AddHeader(TDes8& aDes);
+	TUint16 RemoveHeader(RMBufChain& aPdu);
+#endif // RAWIP_HEADER_APPENDED_TO_PACKETS
+
+public:  // Process Down/Up stack data packets 
+	void Process(TDesC8& aPdu);
+	TInt Send(RMBufChain& aPdu);
+	void SendComplete();
+	// Get the NIF reference.
+	inline MControllerObserver& GetObserver();
+protected:
+	virtual void BcaSend(RMBufChain& aPdu) = 0;
+	virtual void BcaProcess(TDesC8& aPdu) = 0;
+	virtual void BcaSendComplete() = 0;
+	virtual TInt BcaSendBufferLength() = 0;
+	
+protected:
+	enum TSendState
+		{
+		EIdle,
+		ESending,
+		EShuttingDown
+		};
+
+	enum TInitialisationState
+		{
+		EStart,
+		EBcaController,
+		EInitialised
+		};
+
+	inline TInt GetSendState();
+	inline void SendState(TSendState aState);
+	
+private: // Flow Control
+	void ResumeSending();
+	//Buffer control
+	TBool IsSendQueueEmpty();
+	TBool IsSendQueueFull();
+	void AppendToSendQueue(RMBufChain& aPdu);
+	TBool RemoveFromSendQueue(RMBufChain& aPdu);
+	void EmptySendQueue();
+	
+private: // Unowned data.
+    MControllerObserver& iObserver;
+protected:
+	CBttLogger* iTheLogger;
+	TInt iMaxPacketSise;
+	
+private:
+	// Flow control flags
+	TFlowControl iTxFlowControl;
+	TBool iTxContextActive;
+	TSendState iSendState;
+
+	/** The internal packet buffer */
+	RMBufPktQ iSendQueue;
+	/** The maximum number of packets that we want in an internal queue */
+	TInt iMaxSendQueueLen;
+	/** Current number of packets in the internal packet buffer */
+	TInt iNumPacketsInSendQueue;
+	/** Flag to indicate whether the queue is full or not */
+	TBool iFullQueueFlag;
+
+#ifdef RAWIP_HEADER_APPENDED_TO_PACKETS
+	CIPTagHeader* iIPTagHeader;
+#endif // RAWIP_HEADER_APPENDED_TO_PACKETS
+	};
+
+void CBcaController::SendState(TSendState aState)
+	{
+	iSendState = aState;
+	}
+
+TInt CBcaController::GetSendState()
+	{
+	return iSendState;
+	}
+
+
+MControllerObserver& CBcaController::GetObserver()
+	{
+	return iObserver;
+	}
+
+#endif // BCACONTROLLER_H