// Copyright (c) 2007-2009 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:

//

/**

 @file

 @internalComponent

*/

#ifndef BUFFERMANAGER_H

#define BUFFERMANAGER_H

#include <e32std.h>

#include <e32base.h>

#include <e32cmn.h>

#include <graphics/surfacemanager.h>

// class declaration

class TVideoFrameBuffer;

/** Buffer manager for video renderer */

NONSHARABLE_CLASS(CRendererBufferManager) : public CBase

	{

public:

	static CRendererBufferManager* NewL(const RSurfaceManager::TSurfaceInfoV01& aSurfaceInfo, const RArray<TInt>& aBufferOffsets, const RChunk& aChunk, TBool aTimed);

	~CRendererBufferManager();

	TVideoFrameBuffer* NextBuffer();

	TBool ReleaseBuffer(TVideoFrameBuffer* aBuffer);

	TBool UpdateBuffer(TVideoFrameBuffer* aBuffer, const TTime& aTime);

	void BufferAvailable(TInt aBufferId);

	TVideoFrameBuffer* WaitingBuffer(TBool aRemoveFromList, TBool& aIsLast);

	void BufferSubmitted(TVideoFrameBuffer* aBuffer);

	TBool WaitingListIsEmpty();

private:

	CRendererBufferManager(const RChunk& aChunk, TBool aTimed);

	void ConstructL(const RSurfaceManager::TSurfaceInfoV01& aSurfaceInfo, const RArray<TInt>& aBufferOffsets);

	TBool BufferUsedByClient(TVideoFrameBuffer* aBuffer);

	void Lock();

	void Unlock();

private:

	RChunk iChunk;

	TBool iTimed;

	RPointerArray<TVideoFrameBuffer> iBuffers;

	TDblQue<TVideoFrameBuffer> iAvailBuffers;

	TDblQue<TVideoFrameBuffer> iWaitingBuffers; // buffers waiting to be submitted

	TDblQueIter<TVideoFrameBuffer> iWaitingBuffersIter;

	RMutex iMutex;

	};

#endif // BUFFERMANAGER_H