// 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;

 	};