1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 /**

    17  @file

    18  @internalComponent

    19 */

    20 

    21 #ifndef BUFFERMANAGER_H

    22 #define BUFFERMANAGER_H

    23 

    24 #include <e32std.h>

    25 #include <e32base.h>

    26 #include <e32cmn.h>

    27 #include <graphics/surfacemanager.h>

    28 

    29 // class declaration

    30 class TVideoFrameBuffer;

    31 

    32 /** Buffer manager for video renderer */

    33 NONSHARABLE_CLASS(CRendererBufferManager) : public CBase

    34 	{

    35 public:

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

    37 	~CRendererBufferManager();

    38 	TVideoFrameBuffer* NextBuffer();

    39 	TBool ReleaseBuffer(TVideoFrameBuffer* aBuffer);

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

    41 	void BufferAvailable(TInt aBufferId);

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

    43 	void BufferSubmitted(TVideoFrameBuffer* aBuffer);

    44 	TBool WaitingListIsEmpty();

    45 

    46 private:

    47 	CRendererBufferManager(const RChunk& aChunk, TBool aTimed);

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

    49 	TBool BufferUsedByClient(TVideoFrameBuffer* aBuffer);

    50 	void Lock();

    51 	void Unlock();

    52 

    53 private:

    54 	RChunk iChunk;

    55 	TBool iTimed;

    56 	RPointerArray<TVideoFrameBuffer> iBuffers;

    57 	TDblQue<TVideoFrameBuffer> iAvailBuffers;

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

    59 	TDblQueIter<TVideoFrameBuffer> iWaitingBuffersIter;

    60 	RMutex iMutex;

    61 	};

    62 

    63 #endif // BUFFERMANAGER_H