/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:

*

*/

#ifndef __SVPSNAPDRIVER_H

#define __SVPSNAPDRIVER_H

#include <kernel.h>    // for DLogicalChannel

#define SVPDBG

#ifdef SVPDBG

#define DP(format...) Kern::Printf(format)

#else

#define DP(format...)

#endif

#define RET_IF_ERROR(v, e) { if ((v = (e)) != KErrNone) return v; }

enum ESVPSnapReg {

	ESnapshot_Id = 0,

	ESnapshot_Address,

    ESnapshot_Length,

    ESnapshot_Trigger

  };

class DSVPSnapDriverFactory : public DLogicalDevice

{

 public:

  DSVPSnapDriverFactory();

  virtual TInt Install();

  virtual void GetCaps(TDes8& aDes) const;

  virtual TInt Create(DLogicalChannelBase*& aChannel);

};

class DSVPSnapChannel : public DLogicalChannel

{

 public:

  DSVPSnapChannel(DLogicalDevice* aLogicalDevice);

  ~DSVPSnapChannel();

  virtual TInt DoCreate(TInt aUnit, const TDesC* anInfo, const TVersion& aVer);	

  virtual void HandleMsg(TMessageBase* aMsg);

 protected:

  virtual void DoCancel(TInt aReqNo);

  virtual TInt DoRequest(TInt aReqNo, TRequestStatus* aStatus, TAny* a1, TAny* a2);

  virtual TInt DoControl(TInt aFunction, TAny *a1, TAny *a2);

 private:

  TInt SaveVM(const TDesC8* aData);

  TInt LoadVM(const TDesC8* aData);

private:

  DThread* iClientThread;

  TDfcQue* iDFCQue;

  TBuf8<256> iSendDataBuffer;

};

#endif