// 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