// Copyright (c) 2007-2009 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:

//

/**

 @file

 @internalComponent

*/

#ifndef USBDI_CHANNEL_H

#define USBDI_CHANNEL_H

class DUsbInterface;

class DUsbPageList;

/**

  Logical Device (factory class) for USBDI

*/

NONSHARABLE_CLASS(DUsbdiFactory) : public DLogicalDevice

	{

public:

	DUsbdiFactory();

	~DUsbdiFactory();

private:

	//	Inherited from DLogicalDevice

	virtual TInt Install();

	virtual void GetCaps(TDes8& aDes) const;

	virtual TInt Create(DLogicalChannelBase*& aChannel);

	};

NONSHARABLE_CLASS(DUsbdiChannel) : public DLogicalChannelBase

	{

public:

	DUsbdiChannel();

	TInt DoCreate(TInt aUnit, const TDesC8* aInfo, const TVersion& aVer);

	TInt Request(TInt aReqNo, TAny* a1, TAny* a2);

	virtual void CloseChannel();

private:

	~DUsbdiChannel();

	TInt Close();

	TInt AllocChunk(TInt aRequestSize, TInt* aChunkHandle, TInt* aOffset);

	void CloseChunk();

	TInt HandleControl(TInt aReqNo, TAny* a1, TAny* a2);

	TInt HandleRequest(TInt aReqNo, TRequestStatus* aReq, TAny* a1, TAny* a2);

	TInt HandleCancel(TUint aCancelMask);

private:

	DUsbInterface* iInterface;

	DUsbPageList* iPageList; // Owns the shared chunk

	};

#endif