#ifndef __CONTROL_ENDPOINT_READER_H

#define __CONTROL_ENDPOINT_READER_H

/*

* 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 controlendpointreader.h

* @internalComponent

* 

*

*/

#include "endpointreader.h"

namespace NUnitTesting_USBDI

	{

/**

*/

class MRequestHandler

	{

public:

	/**

	Called when a control vendor request from the host is received and does not require data being

	sent back to the host.

	@param aRequest the control request value

	@param aValue a parameter value for the request

	@param aIndex an index parameter for the request

	@param aDataReqLength the length of the data to be returned to the host

	@param aPayload the data payload sent to the device by the host in a data phase

	*/

	virtual TInt ProcessRequestL(TUint8 aRequest,TUint16 aValue,TUint16 aIndex,TUint16 aDataReqLength,

					const TDesC8& aPayload) = 0;

	};

/**

This class describes a entity that reads control requests from endpoint 0

*/

class CControlEndpointReader : public CEndpointReader, public MEndpointDataHandler

	{

public:

	/**

	Constructor, build a reader of requests from endpoint zero

	@param aClientDriver the channel to the USB client driver

	@param aRequestHandler the handler of control requests

	*/

	CControlEndpointReader(RDevUsbcClient& aClientDriver,MRequestHandler& aRequestHandler);

	/**

	Destructor

	*/

	virtual ~CControlEndpointReader();

	/**

	Reads requests sent by the host on endpoint 0.  This includes any data from the data phase

	of the transfer

	*/

	void ReadRequestsL();

public: // From MEndpointDataHandler

	/**

	Interprets the data received as a control request on endpoint 0

	@param aEndpointNumber the number of the endpoint read from

	@param aData the data successfully read from the endpoint

	*/

	virtual void DataReceivedFromEndpointL(TEndpointNumber aEndpointNumber,const TDesC8& aData);	

	/**

	Notified when an error occurs on a read from the endpoint

	@param aEndpointNumber the number of the endpoint read from

	@param aErrorCode the read operation completion error

	*/

	void EndpointReadError(TEndpointNumber aEndpointNumber,TInt aErrorCode);

private:

	// Flag to indicate

	TBool iDeviceToHost;

	TBool iDataPhase;

	/**

	The request status of the entity processing requests

	*/

	MRequestHandler& iRequestHandler;

	/**

	The fields of the control transfer request

	*/

	TUint8 ibRequestType;

	TUint8 ibRequest;

	TUint16 iwValue;

	TUint16 iwIndex;

	TUint16 iwLength;

	};

	}

#endif