// Copyright (c) 2001-2009 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 __MMFFIFO_H_

#define __MMFFIFO_H_

// standard EPOC include header files

#include <e32base.h>

#include <e32std.h>

/**

	Class for storing stream data 

*/

class TMMFFifoItemBase

	{

public:

	static const TInt	iOffset;

private:

	TSglQueLink			iSlink;

	};

template<class T>

class TMMFFifoItem : public TMMFFifoItemBase

	{

public:

	inline TMMFFifoItem(T& aData);

	inline T& GetData();

private:

	T& iData;

	};

/**

	Class for processing stream data queue (add, get, remove etc)

*/

class CMMFFifoBase	: public CBase

	{

public:

	virtual ~CMMFFifoBase();

	TBool IsEmpty();

	void AddToFifo(TMMFFifoItemBase& aItem);

protected:

	CMMFFifoBase();

	void RemoveFirstItemBase();

	TMMFFifoItemBase* GetBase();

private:

	TSglQue<TMMFFifoItemBase>		iFifo;

	TSglQueIter<TMMFFifoItemBase>	iFifoIter;

	};

template<class T>

class CMMFFifo : public CMMFFifoBase

	{

public:

	inline void RemoveFirstItem();

	inline TMMFFifoItem<T>* Get();

	};

template <class T>

TMMFFifoItem<T>::TMMFFifoItem(T& aData)

: iData(aData)

	{}

template <class T>

T& TMMFFifoItem<T>::GetData()

	{ return iData; }

//

template <class T>

void CMMFFifo<T>::RemoveFirstItem()

	{ RemoveFirstItemBase(); }

template <class T>

inline TMMFFifoItem<T>* CMMFFifo<T>::Get()

	{ return STATIC_CAST(TMMFFifoItem<T>*, GetBase()); }

#endif