// 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 <bluetooth/btpowercontrol.h>

#include <bluetooth/hciserverclient.h>

#include <bluetooth/hci/hciipc.h>

#include <bluetooth/logger.h>

#include <bluetooth/btpowercontrolmessages.h>

#ifdef __FLOG_ACTIVE

_LIT8(KLogComponent, LOG_COMPONENT_BTPOWERCONTROL);

#endif

EXPORT_C RBTPowerControl::RBTPowerControl()

	: iHCIServerSession(NULL)

	{

	}

/**

Opens the handle to the power control interface for the Bluetooth hardware.

@panic KBTPowerControlPanic EHandleIsAlreadyOpen If the RBTPowerControl instance has already been opened (and not subsequently closed).

*/

EXPORT_C TInt RBTPowerControl::Open()

	{

	__ASSERT_ALWAYS(!iHCIServerSession, PANIC(KBTPowerControlPanic, EHandleIsAlreadyOpen));

	TInt err = KErrNoMemory;

	iHCIServerSession = new RHCIServerSession;

	if(iHCIServerSession)

		{

		err = iHCIServerSession->Open(KHCIPowerControlManagerUid);

		if(err != KErrNone)

			{

			delete iHCIServerSession;

			iHCIServerSession = NULL;

			}

		}

	return err;

	}

/**

Closes the handle to the Bluetooth power control interface.

Note that it is safe to call this multiple times.

*/

EXPORT_C void RBTPowerControl::Close()

	{

	if(iHCIServerSession)

		{

		iHCIServerSession->Close();

		delete iHCIServerSession;

		iHCIServerSession = NULL;

		}

	}

/**

Makes an asynchronous request to set the power state of the Bluetooth hardware.

@param aState The desired state.

@param aInfo 

@param aStatus The TRequestStatus that will signal the result of the request when completed.

@panic KBTPowerControlPanic EApiUsedWhenHandleIsNotOpen If called when the RBTPowerControl instance has not been opened.

*/

EXPORT_C void RBTPowerControl::SetPower(TBTPowerState aState, TDes8* aInfo, TRequestStatus &aStatus)

	{

	__ASSERT_ALWAYS(iHCIServerSession, PANIC(KBTPowerControlPanic, EApiUsedWhenHandleIsNotOpen));

	TInt state = static_cast<TInt>(aState);

	iHCIServerSession->SendAsync(EHCISetPower, aInfo, NULL, state, aStatus);

	}

/**

Makes a synchronous request to get the current power state of the Bluetooth hardware.

@param aState Set (on return) to the current power state if request was successful.

@param aInfo

@return KErrNone if the request was successful, otherwise one of the system-wide error codes.

@panic KBTPowerControlPanic EApiUsedWhenHandleIsNotOpen If called when the RBTPowerControl instance has not been opened.

*/

EXPORT_C TInt RBTPowerControl::GetPower(TBTPowerState& aState, TDes8* aInfo)

	{

	__ASSERT_ALWAYS(iHCIServerSession, PANIC(KBTPowerControlPanic, EApiUsedWhenHandleIsNotOpen));

	TPckgBuf<TBTPowerState> pckg;

	TInt err = iHCIServerSession->SendSync(EHCIGetPower, aInfo, &pckg, 0);

	if(err==KErrNone)

		{

		aState = pckg();

		}

	return err;

	}

/**

Cancels asynchronous requests made through this handle to the power control interface.

@panic KBTPowerControlPanic EApiUsedWhenHandleIsNotOpen If called when the RBTPowerControl instance has not been opened.

*/

EXPORT_C void RBTPowerControl::Cancel()

	{

	__ASSERT_ALWAYS(iHCIServerSession, PANIC(KBTPowerControlPanic, EApiUsedWhenHandleIsNotOpen));

	// Cast away the return value - we can only do our best here, if there is an error (which shouldn't originate

	// from the HCI Server at least) we just ignore it.

	static_cast<void>(iHCIServerSession->SendSync(KHCICancelPower, NULL, NULL, 0));

	}