/*

 * Copyright (c) 2004-2009 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: 

 * Class declaration for CBulkOnlyTransportUsbcLdd.

 *

 */

 /** 

  @file

  @internalTechnology

 */

 #ifndef __CBULKONLYTRANSPORTUSBCLDD_H__

 #define __CBULKONLYTRANSPORTUSBCLDD_H__

 #include "cbulkonlytransport.h"

 #include "cactivedevicestatenotifierbase.h"

 // Maximum size for SCSI Read10 Write10 and Verify10 commands

 // Windows requests size of 64K whereas MAC requests size of 128K

 static const TUint32 KMaxBufSize = 128 * 1024;

 //Forward Declaration

 class CBulkOnlyTransportUsbcLdd;

 /**

 Represent session with control endpoint (Ep0).

 handles the control interface, and responds to the class specific commands (RESET and GET_MAX_LUN).  

 */

 class CControlInterfaceUsbcLdd : public CActive

 	{

 public:

 	enum TControlState

 		{

 		ENone,

 		EReadEp0Data,

 		ESendMaxLun

 		};

 public:

 	static CControlInterfaceUsbcLdd* NewL(CBulkOnlyTransportUsbcLdd& aParent);

 	~CControlInterfaceUsbcLdd();

 	TInt Start();

 	void Stop();

 	virtual void RunL();

 	virtual void DoCancel();

 private:

 	CControlInterfaceUsbcLdd(CBulkOnlyTransportUsbcLdd& aParent);

 	void ConstructL();

 	TInt ReadEp0Data();

 	void DecodeEp0Data();

 	TInt ReadUsbEp0();

 private:

 	/** Buffer for request data*/

 	TBuf8<KRequestHdrSize> iData;

 	TUsbRequestHdr iRequestHeader;

 	/** reference to the  CBulkOnlyTransport*/

 	CBulkOnlyTransportUsbcLdd& iParent;

 	/** represent carrent state for state mashine */

 	TControlState iCurrentState;

 	};

 /** Transport Class that accessess the Non-SC LDD */

 class CBulkOnlyTransportUsbcLdd : public CBulkOnlyTransport, public MLddDeviceStateNotification

 	{

 public:

 	CBulkOnlyTransportUsbcLdd(TInt aNumDrives,CUsbMassStorageController& aController);

 	~CBulkOnlyTransportUsbcLdd();

 	void ConstructL();

 	RDevUsbcClient& Ldd();

 	TInt BytesAvailable(); // from Mtransport base class

 	TInt SetupConfigurationDescriptor(TBool aUnset = EFalse);

 	TInt SetupInterfaceDescriptors();

 	void ReleaseInterface();

 	void CancelControlInterface();

 	TInt StartControlInterface();

 	void ActivateDeviceStateNotifier();

 	void CancelDeviceStateNotifier();

 	void CancelReadWriteRequests();

 	void AllocateEndpointResources();

 	TInt GetDeviceStatus(TUsbcDeviceState& deviceStatus);

 	void FlushData();

 	void ReadAndDiscardData(TInt aBytes);

 	void ReadCBW();

 	void ExpireData(TAny* aAddress = NULL);

 	void ProcessCbwEvent();

 	void StallEndpointAndWaitForClear();

 	void ReadData(TUint aLength = 0);

 	void WriteUsb(TRequestStatus& aStatus, TPtrC8& aDes, TUint aLength, TBool aZlpRequired = EFalse);

 	void SetCbwPtr();

 	TPtr8& SetCommandBufPtr(TUint aLength);

 	TPtr8& SetDataBufPtr();

 	void SetPaddingBufPtr(TUint aLength);

 	void SetCswBufPtr(TUint aLength);

 	void ProcessReadingDataEvent();

 	void DiscardData(TUint aLength);

 	void WriteToClient(TUint aLength);

 	void SetReadDataBufPtr(TUint aLength);

 #ifdef MSDC_MULTITHREADED

 	virtual void GetBufferPointers(TPtr8& aDes1, TPtr8& aDes2);

 #endif

     void Activate(TRequestStatus& aStatus, TUint& aValue);

     void Cancel();

 private:

 	TInt ReadUsb(TUint aLength = 0);

 private:

 	RDevUsbcClient iLdd;

 	CControlInterfaceUsbcLdd* iControlInterface;

 	CActiveDeviceStateNotifierBase* iDeviceStateNotifier;

 	/** buffer for Command Block Wrapper */

 	TBuf8 <KCbwLength> iCbwBuf;

 	TBuf8<KCommandBufferLength> iCommandBuf; // For Responses to commands 

 	TBuf8<KMaxBufSize> iDataBuf1;	// For data transfers (Reading and Writing)

 	TBuf8<KMaxBufSize> iDataBuf2;

 	TBool iSwap;

 	/** internal buffer for CSW */

 	TBuf8<KCswLength> iCswBuf;

 	/** internal buffer for padding */

 	TBuf8<KBOTMaxBufSize> iBuf;

 	/** internal buffer for garbage */

 	TBuf8<512> iDiscardBuf;

 	};

 #endif