bluetoothdevicesearcher.cpp

symbian 系统下蓝牙通讯完整实现源码。

/**
*
* @brief Definition of CBluetoothDeviceSearcher
*
* Copyright (c) EMCC Software Ltd 2003
* @version 1.0
*/

// Includes
#include "BluetoothDeviceSearcher.h"
#include "BluetoothDefinitions.h"
#include "BluetoothObserver.h"


/**
* Factory Constructor.
* Only available way to construct class.
* This function can leave L, returning value is on Cleanup Stack C
* @param none
* @return new instance of the CBluetoothDeviceSearcher on Cleanup stack
*/
CBluetoothDeviceSearcher* CBluetoothDeviceSearcher::NewLC(MBluetoothObserver &aBluetoothObserver)
	{
	CBluetoothDeviceSearcher* self = new (ELeave) CBluetoothDeviceSearcher(aBluetoothObserver);
	CleanupStack::PushL(self);
	self->ConstructL();
	return self;
	}

/**
* Factory Constructor.
* Only available way to construct class.
* This function can leave L
* @param none
* @return new instance of the CBluetoothDeviceSearcher
*/
CBluetoothDeviceSearcher* CBluetoothDeviceSearcher::NewL(MBluetoothObserver &aBluetoothObserver)
	{
	CBluetoothDeviceSearcher* self = CBluetoothDeviceSearcher::NewLC(aBluetoothObserver);
	CleanupStack::Pop(self);
	return self;
	}

/**
* Constructor.
* Private constructor.
* @see NewL
* @see NewLC
* @param none
* @return none
**/
CBluetoothDeviceSearcher::CBluetoothDeviceSearcher(MBluetoothObserver &aBluetoothObserver)
: CActive(0), iObserver(aBluetoothObserver)
	{
	}

/**
* Destructor.
*
* @param none
* @return none
**/
CBluetoothDeviceSearcher::~CBluetoothDeviceSearcher()
	{
	Deque();
	}

/**
* Second Stage Constructor.
* This function can leave L
* @param none
* @see NewL
* @see NewLC
* @param none
* @return none
*/
void CBluetoothDeviceSearcher::ConstructL()
	{
	CActiveScheduler::Add(this);
	}

/**
* Select Device.
*
* RNotifier performs a search of local piconet, and provides a Selection List of all devices found, so that,
* the User may select one to begin communication with
*
* @param aResponse parameter is populated with remote device information
* @return errorcode
**/
void CBluetoothDeviceSearcher::SelectDeviceL(TBTDeviceResponseParamsPckg& aResponse)
	{
	iResponse = &aResponse;  // store a pointer to the response buffer

	TUUID targetServiceClass(KServiceClass);
	TBTDeviceClass deviceClass(KServiceClass);
	TBTDeviceSelectionParams selectionFilter;
	selectionFilter.SetUUID(targetServiceClass);
	selectionFilter.SetDeviceClass(deviceClass);
	// These filtering methods do not work at the time of writing,
	// and ALL Bluetooth devices in range are returned

	TBTDeviceSelectionParamsPckg selectionParams(selectionFilter);

	User::LeaveIfError(iNotifier.Connect());

	iNotifier.StartNotifierAndGetResponse(iStatus, KDeviceSelectionNotifierUid, selectionParams, aResponse);
	SetActive();
	}


/**
* RunL.
*
* Called when device selection process is completed. Notifies the observer
* that a device has been selected.
*
* @param none
* @return none
**/

void CBluetoothDeviceSearcher::RunL()
	{
	TInt retVal = iStatus.Int();
	if (retVal == KErrNone)
		{
		if ((*iResponse)().IsValidDeviceName())
			{
			retVal = KErrNone;
			}
		}

	iNotifier.CancelNotifier(KDeviceSelectionNotifierUid);
	iNotifier.Close();

	iObserver.DeviceFoundL(retVal);
	}


/**
* DoCancel.
*
* Called by active object framework when this object is cancelled
*
* @param none
* @return none
**/

void CBluetoothDeviceSearcher::DoCancel()
	{
	iNotifier.CancelNotifier(KDeviceSelectionNotifierUid);
	iNotifier.Close();
	}