/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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 NCMDATAINTERFACE_H

#define NCMDATAINTERFACE_H

#include <e32base.h>

#ifndef __OVER_DUMMYUSBSCLDD__

#include <nifmbuf.h>

#include <networking/ethinter.h>

#include <d32usbcsc.h>

#else

#include <dummyusbsclddapi.h>

#include <usb/testncm/ethinter.h>

#endif

#include "ncmpktdrvcommon.h"

class    CNcmDataSender;

class    CNcmDataReceiver;

/**

The interface to NCM data channel.

*/

NONSHARABLE_CLASS(MNcmDataObserver)

{

public:

    /**

    Process received datagram parsed from NCM.

    @param[in]   aPacket, contains the datagram(ethernet frame) to be dealed with.

    */

    virtual void ProcessReceivedDatagram(RMBufPacket& aPacket) = 0;

    /**

    Notify the upper layer(TCP/IP stack) to continue to send data.

    */

    virtual void ResumeSending() = 0;

    /**

    Notify unrecoverable error in data channel.

    */

    virtual void DataError(TInt aError) = 0;

    /**

    Notify the Data Interface's alt-setting changes, which commonly from 0 to 1, or vice versa.

    @param[in]   aIfAltSet, the alt-setting number.

    */

    virtual void HandleAltSetting(TInt aIfAltSet) = 0;

};

/**

Maintain the logic of Ncm data channel

*/

NONSHARABLE_CLASS(CNcmDataInterface) : public CActive

    {

public:

    static CNcmDataInterface* NewL(MNcmDataObserver& aEngine, RDevUsbcScClient& aLdd);

    ~CNcmDataInterface();

    inline TBool IsStarted() const;

    void Start();

    void Stop();

    TInt Send(RMBufChain& aPacket);

    TInt GetSpeed(TInt& aSpeed);

    TInt GetNtbInputSize(TDes8& aSize);

    TInt SetNtbInputSize(TDesC8& aSize);

    TInt GetNtbParam(TDes8& aParam);

    TInt SetInEpBufferSize(TUint aSize);

    void ActivateLdd();

    inline void DataError(TInt aErroCode) const;

    inline void ResumeSending() const;

    inline void ProcessDatagram(RMBufPacket& aPacket) const;

    inline TInt AltSetting() const;

private:

    CNcmDataInterface(MNcmDataObserver& aEngine, RDevUsbcScClient& aLdd);

    void ConstructL();

    //From CActive

    void RunL();

    void DoCancel();

private:

    TBool               iStarted;

    CNcmDataSender*     iSender;

    CNcmDataReceiver*   iReceiver;

    MNcmDataObserver&   iEngine;

    RDevUsbcScClient&   iLdd;

    TInt                iAltSetting;

    TUint               iIfState;

    };

// inline functions

#include "ncmdatainterface.inl"

#endif // NCMDATAINTERFACE_H