// Copyright (c) 2006-2009 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

*/

#include "cmtpusbconnection.h"

#include "cmtpusbepcontrol.h"

#include "mtpusbpanic.h"

#include "mtpusbtransportconstants.h"

// Class constants.

__FLOG_STMT(_LIT8(KComponent,"UsbEpControl");)

/**

USB MTP device class control endpoint data transfer controller factory method.

@param aId The internal endpoint identifier of the endpoint.

@param aConnection USB MTP device class transport connection which controls 

the endpoint.

@return A pointer to an USB MTP device class control endpoint data transfer 

controller. Ownership IS transfered.

@leave One of the system wide error codes, if a processing failure occurs.

*/

CMTPUsbEpControl* CMTPUsbEpControl::NewL(TUint aId, CMTPUsbConnection& aConnection)

    {

    CMTPUsbEpControl* self = new(ELeave) CMTPUsbEpControl(aId, aConnection);

    CleanupStack::PushL(self);

#ifdef __FLOG_ACTIVE    

    self->ConstructL(KComponent);

#else

    self->ConstructL();

#endif

    CleanupStack::Pop(self);

    return self;    

    }

/**

Destructor.

*/

CMTPUsbEpControl::~CMTPUsbEpControl()

    {

    __FLOG(_L8("~CMTPUsbEpControl - Entry"));

    __FLOG(_L8("~CMTPUsbEpControl - Exit"));

    }

/**

Initiates an USB MTP device class specific request data receive sequence.

@param aData The control request data sink buffer.

@leave One of the system wide error codes, if a processing failure occurs.

*/

void CMTPUsbEpControl::ReceiveControlRequestDataL(MMTPType& aData)

    {

    __FLOG(_L8("ReceiveControlRequestDataL - Entry"));

    __FLOG_VA((_L8("CMTPUsbEpControl state on entry = %d"), iState));

    __ASSERT_DEBUG((iState == EControlRequestSetupComplete), Panic(EMTPUsbBadState));

    // Pass the bulk data sink buffer to the base class and update state..

    ReceiveDataL(aData);

    SetState(EControlRequestDataReceive);

    __FLOG_VA((_L8("CMTPUsbEpControl state on entry = %d"), iState));

    __FLOG(_L8("ReceiveControlRequestDataL - Exit"));

    }

/**

Initiates an USB MTP device class specific request request processing sequence.

@param aData The control request setup data sink buffer.

@leave One of the system wide error codes, if a processing failure occurs.

*/

void CMTPUsbEpControl::ReceiveControlRequestSetupL(MMTPType& aData)

    {

    __FLOG(_L8("ReceiveControlRequestSetupL - Entry"));

    __FLOG_VA((_L8("CMTPUsbEpControl state on entry = %d"), iState));

    __ASSERT_DEBUG((iState == EIdle), Panic(EMTPUsbBadState));

    // Pass the bulk data sink buffer to the base class and update state.

    ReceiveDataL(aData);

    SetState(EControlRequestSetupPending);

    __FLOG_VA((_L8("CMTPUsbEpControl state on entry = %d"), iState));

    __FLOG(_L8("ReceiveControlRequestSetupL - Exit"));

    }

/**

Initiates an USB MTP device class specific request data send sequence.

@param aData The control request data source buffer.

@leave One of the system wide error codes, if a processing failure occurs.

*/

void CMTPUsbEpControl::SendControlRequestDataL(const MMTPType& aData)

    {

    __FLOG(_L8("SendControlRequestDataL - Entry"));

    __ASSERT_DEBUG((iState == EControlRequestSetupComplete), Panic(EMTPUsbBadState));

    // Pass the bulk data source buffer to the base class and update state.

    SendDataL(aData);

    SetState(EControlRequestDataSend);

    __FLOG(_L8("SendControlRequestDataL - Exit"));

    }

/**

Concludes an USB MTP device class specific request request processing sequence.

*/

void CMTPUsbEpControl::SendControlRequestStatus()

    {

    __FLOG(_L8("SendControlRequestStatus - Entry"));

    __FLOG_VA((_L8("CMTPUsbEpControl state on entry = %d"), iState));

    __ASSERT_DEBUG(((iState == EControlRequestStatusSend) || (iState == EControlRequestSetupComplete)), Panic(EMTPUsbBadState));

    TInt ret = Connection().Ldd().SendEp0StatusPacket();

    __FLOG_VA((_L8("SendEp0StatusPacket result = %d."), ret));

    SetState(EIdle);

    __FLOG_VA((_L8("CMTPUsbEpControl state on exit = %d"), iState));

    __FLOG(_L8("SendControlRequestStatus - Exit"));

    }

void CMTPUsbEpControl::ReceiveDataCompleteL(TInt aError, MMTPType& aSink)

    {

    __FLOG(_L8("ReceiveDataCompleteL - Entry"));

    __FLOG_VA((_L8("CMTPUsbEpControl state on entry = %d"), iState));

    switch (iState)

        {

    case EControlRequestSetupPending:

        SetState(EControlRequestSetupComplete);

        Connection().ReceiveControlRequestSetupCompleteL(aError, aSink);

        break;          

    case EControlRequestDataReceive:

        SetState(EControlRequestStatusSend);

        Connection().ReceiveControlRequestDataCompleteL(aError, aSink);

        break;  

    case EIdle:

    	// State will be EIdle if CancelReceive is called

    	break;

    case EControlRequestSetupComplete:

    case EControlRequestDataSend:

    case EControlRequestStatusSend:

    default:

        __DEBUG_ONLY(Panic(EMTPUsbBadState));

        break;          

        }

    if(aError != KErrNone)

	    {

	    // Reset the internal state to idle.

	    SetState(EIdle);

	    }

    __FLOG_VA((_L8("CMTPUsbEpControl state on exit = %d"), iState));

    __FLOG(_L8("ReceiveDataCompleteL - Exit"));

    }

void CMTPUsbEpControl::SendDataCompleteL(TInt aError, const MMTPType& aSource)

    {

    __FLOG(_L8("SendDataCompleteL - Entry"));

    __FLOG_VA((_L8("CMTPUsbEpControl state on entry = %d"), iState));

    __ASSERT_DEBUG((iState == EControlRequestDataSend), Panic(EMTPUsbBadState));

    SetState(EIdle);

    Connection().SendControlRequestDataCompleteL(aError, aSource);        

    __FLOG_VA((_L8("CMTPUsbEpControl state on exit = %d"), iState));

    __FLOG(_L8("SendDataCompleteL - Exit"));

    }    

/**

Constructor.

@param aId The internal endpoint identifier of the endpoint.

@param aConnection USB MTP device class transport connection which controls 

the endpoint.

*/

CMTPUsbEpControl::CMTPUsbEpControl(TUint aId, CMTPUsbConnection& aConnection) :

    CMTPUsbEpBase(aId, EPriorityStandard, aConnection)

    {

    }

/**

Sets the endpoint data send/receive state variable.

@param aState The new data stream state.

*/

void CMTPUsbEpControl::SetState(TUint aState)

    {

    __FLOG(_L8("SetState - Entry"));

    iState = aState;

    __FLOG_VA((_L8("State set to %d"), iState));

    __FLOG(_L8("SetState - Exit"));

    }

/**

Overide this method derived from base class.

reset the state.

*/      

void CMTPUsbEpControl::DoCancel()

	{

	__FLOG(_L8("DoCancel - Entry"));

	CMTPUsbEpBase::DoCancel();

	SetState(EIdle);

	__FLOG(_L8("DoCancel - Exit"));

	}