// Copyright (c) 2008-2009 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:

 // mmcamerapolicymanager.h

 // 

 //

 /**

  @file

  @internalTechnology

 */

 #ifndef MMCAMERASERVERPOLICYMANAGER_H

 #define MMCAMERASERVERPOLICYMANAGER_H

 #include <e32std.h>

 #include <e32hashtab.h>

 #include <e32cmn.h>

 class CMMCameraServerSession;

 typedef TDblQue<CMMCameraServerSession> TCamSessionQue;

 typedef TDblQueIter<CMMCameraServerSession> TCamSessionIter;

 // ECAM Server Policies

 static _LIT_SECURITY_POLICY_C1 (KMMCameraServerPolicyUserEnvironment, ECapabilityUserEnvironment);

 static _LIT_SECURITY_POLICY_C1 (KMMCameraServerPolicyMultimediaDD, ECapabilityMultimediaDD);

 /**

  * Manages policy for the ECAM server.

  * 

  * Handles both Platsec capability checks and Reserve/Release of camera devices.

  */  

 class CMMCameraServerPolicyManager : public CBase

 	{

 public:

 	static CMMCameraServerPolicyManager* NewL();

 	~CMMCameraServerPolicyManager();

 	void ReleaseClient(CMMCameraServerSession* aSession);

 	TBool ReserveClient(CMMCameraServerSession* aSession);

 	void OnConnectL (const RMessage2& aMessage);

 	void ServiceHandlerL(const RMessage2& aMessage);

 private:

 	CMMCameraServerPolicyManager();   // Named Constructor Idiom concept used

 	void ConstructL();

 	CMMCameraServerSession* FindFirstInQue(TInt aIndex);

 	CMMCameraServerSession* FindLastInQue(TInt aIndex);

 	void ReserveUpdate(CMMCameraServerSession* aSession);

 	TBool CheckControlOvertaking(CMMCameraServerSession* aSession); // informs whether the new client can overtake camera control from the previously reserved ones 

 private:

 	TCamSessionQue iReservedSessionQ;

 	TCamSessionIter iIter;

 	TInt iCameraIndex;

     TInt iHandle;

     TInt iPriority;

 	TBool iMMCapability;   

 	};

 #endif // MMCAMERASERVERPOLICYMANAGER_H