// 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