// Copyright (c) 2005-2009 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:

//

#include "SERVER.H"

NONSHARABLE_CLASS(CFbsBackgroundCompressionQueueElement): public CBase

/**

@internalComponent

*/

	{

	friend class CFbsBackgroundCompression;

private:

	CFbsBackgroundCompressionQueueElement(CBitmapObject* aSrcObj, TBitmapfileCompressionScheme aScheme);

	~CFbsBackgroundCompressionQueueElement();

	void CompleteOutstandingRequestAndDestroy(TInt aReason);

	void CompleteOutstandingRequest(const CSession2* aSession);

private:

	TDblQueLink iLink;

	CBitmapObject* iSourceObject;

	TBitmapfileCompressionScheme iCompressionScheme;

	RMessage2 iMessage;

	};

NONSHARABLE_CLASS(CFbsBackgroundCompression): public CActive

/**

@internalComponent

*/

	{

public:

	static CFbsBackgroundCompression* NewL(CFbTop& aFbTop);

	~CFbsBackgroundCompression();

	TInt AddToCompressionQueue(CBitmapObject* aSrcObj, TBitmapfileCompressionScheme aScheme, const RMessage2* aMessage);

	void RemoveFromCompressionQueue(CBitmapObject* aSrcObj);

	void CompleteOutstandingRequests(const CSession2* aSession);

	void CompressAll();

private:

	CFbsBackgroundCompression(CFbTop& aFbTop);

	void ConstructL();

	TInt PrepareCompression();

	void FinalizeCompression(const TRequestStatus& aStatus);

	void RunL();

	void DoCancel();

	static TInt ThreadFunction(CFbsBackgroundCompression* aSelf);

private:

	CFbTop& iFbTop;

	RThread iThread;

	TBool iThreadCreated;

	RSemaphore iThreadGo;

	RMutex iThreadMutex;

	TDblQue<CFbsBackgroundCompressionQueueElement> iCompressionQueue;

	CBitmapObject* volatile iBitmapObject;

	volatile TBitmapfileCompressionScheme iCompressionScheme;

	};