// 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:

//

#ifndef L2CAPSDU_H_

#define L2CAPSDU_H_

#include <e32def.h>

#include <e32base.h>

#include <es_mbuf.h>

#include "L2CapPDU.h"

class CL2CapSDU;

class ML2CapSDUHandler

	{

public:

	virtual void ProcessFlushTimerExpiry(CL2CapSDU& aL2CapSDU) = 0;

	};

NONSHARABLE_CLASS(CL2CapSDU) : public CBase

	{

public:		

	// MBuf based descriptor creation.

	static CL2CapSDU* NewLC(RMBufChain& aSDUData,

                            ML2CapSDUHandler& aParent,

			                TUint16 aPDUSize,

                            TBool aIsBasicDataVersion = ETrue,

			                TUint16 aTimerDuration = KInfiniteFlush);

	static CL2CapSDU* NewL(RMBufChain& aSDUData,

		                   ML2CapSDUHandler& aParent,

			               TUint16 aPDUSize,

		                   TBool aIsBasicDataVersion = ETrue,

			               TUint16 aTimerDuration = KInfiniteFlush);

	static TInt FlushTimerExpired(TAny* aL2CapSDU);

	virtual ~CL2CapSDU();

	static TInt GetSDUOverhead(TBool aBasicMode);

	TBool GetPDU(HL2CapPDU*& aReturnedPDU);

	TBool IsSDUEmpty() const;

	TBool CurrentPDUIsFirstPDU();

	void StartFlushTimer(TUint16 aTimerDuration);

	TInt ChangeSDUSegmentation(TBool aIsBasicDataVersion, TUint16 aPDUSize);

#ifdef _DEBUG

	TInt DebugManualFlush();

#endif

private:

	CL2CapSDU(ML2CapSDUHandler& aParent, RMBufChain& aDataFrame, TUint16 aReassembledSDULength);

	CL2CapSDU(ML2CapSDUHandler& aParent);

	void ConstructL(RMBufChain& aSDUData, TBool aIsBasicDataVersion, TUint16 aTimerDuration, TUint16 aPDUSize); 

	TInt SegmentSDUIntoPDUs(RMBufChain& aSDUData, TBool aIsBasicDataVersion, TUint16 aPDUSize);

	void HandleFlushTimerExpired();

public:

	TDblQueLink iLink;

private:

	ML2CapSDUHandler& iParent;

	TDblQue<HL2CapPDU> iPDUs;

	TDblQueIter<HL2CapPDU> iCurrentPDU;

	TDeltaTimerEntry iFlushTimerEntry;

	TBool iFlushTimerRunning;

	RMBufChain iIncomingSDU;

	};

#endif