hxsymbianapman.cpp

linux下的一款播放器

 *	Purpose:
 *      Returns information about the access point we want to connect to.
 */
STDMETHODIMP
HXSymbianAccessPointManager::GetPreferredAccessPointInfo(THIS_ REF(IHXValues*) pInfo)
{
    HX_RESULT res = HXR_FAILED;

    pInfo = m_pPreferredInfo;

    if (pInfo)
    {
	res = HXR_OK;
    }

    DPRINTF(D_AP_MANAGER, 
	    ("HXSymbianAccessPointManager::GetPreferredAccessPointInfo() : %08x\n",
	     res));

    return res;
}

/************************************************************************
 *	Method:
 *	    IHXAccessPointManager::SetPreferredAccessPointInfo
 *	Purpose:
 *      Tells the access point manager about the access 
 *      point we would like it to connect to.
 */
STDMETHODIMP
HXSymbianAccessPointManager::SetPreferredAccessPointInfo(THIS_ IHXValues* pInfo)
{
    HX_RESULT res = HXR_FAILED;
    ULONG32 ulAccessPointID = 0;

    if (pInfo && (HXR_OK == pInfo->GetPropertyULONG32("ID", ulAccessPointID)))
    {
	HX_RELEASE(m_pPreferredInfo);

	m_pPreferredInfo = pInfo;
	m_pPreferredInfo->AddRef();

	res = HXR_OK;
    }
    else
    {
	HX_RELEASE(m_pPreferredInfo);
    }

    return res;
}

/*
 * IHXAccessPointSelectorResponse methods
 */

/************************************************************************
 *	Method:
 *	    IHXAccessPointSelectorResponse::SelectAccessPointDone
 *	Purpose:
 *      Returns the selected access point info
 */
STDMETHODIMP
HXSymbianAccessPointManager::SelectAccessPointDone(THIS_ HX_RESULT status, 
						   IHXValues* pInfo)
{
    HX_RESULT res = HXR_UNEXPECTED;

    if (m_bSelectAPPending)
    {
	m_bSelectAPPending = FALSE;

	if ((HXR_OK == status) &&
	    (HXR_OK == SetPreferredAccessPointInfo(pInfo)))
	{
	    status = DoConnect(0);
	}

	if (HXR_OK != status)
	{
	    if (HXR_OUTOFMEMORY != status)
	    {
		status = HXR_NET_CONNECT;
	    }

	    DispatchConnectDones(status);
	}

	res = HXR_OK;
    }

    return res;
}

void HXSymbianAccessPointManager::SetContext(IUnknown* pContext)
{
    if (pContext)
    {
	pContext->QueryInterface(IID_IHXCommonClassFactory, (void**)&m_pCCF);
    }
}

HX_RESULT 
HXSymbianAccessPointManager::DoConnect(IHXAccessPointConnectResponse* pResp)
{
    DPRINTF(D_AP_MANAGER, ("HXSymbianAccessPointManager::DoConnect(%p)\n", 
			   pResp));

    HX_RESULT res = HXR_FAILED;

    ULONG32 ulActiveId = 0;
    ULONG32 ulPreferredId = 0;

    BOOL bQueueResponse = (pResp) ? TRUE : FALSE;

    if (HXR_OK == GetPreferredID(ulPreferredId))
    {
	// We have a preferred access point set

	if (HXR_OK != GetActiveID(ulActiveId))
	{
	    // We don't have an active access point

	    if (apConnected == m_state)
	    {
		// The access point disconnected without
		// our knowledge. Update our state.
		m_state = apIdle;
	    }

	    // Start to connect
	    res = StartConnection();
	}
	else if (ulActiveId == ulPreferredId)
	{
	    // We have a preferred access point and we are connected
	    // to it.

	    // Dispatch the callbacks now.
	    if (pResp)
	    {
		pResp->ConnectDone(HXR_OK);
		bQueueResponse = FALSE;
	    }
	
	    if (apIdle == m_state)
	    {
		m_state = apConnected;

		// Dispatch any other pending callbacks
		DispatchConnectDones(HXR_OK);
	    }
	    
	    res = HXR_OK;
	}
	else
	{
	    // We need to disconnect from the current access
	    // point
	    
	    res = StartDisconnect();
	}
    }
    else
    {
	// We don't have a preferred access point

	if (m_pAPSelector)
	{
	    if (!m_bSelectAPPending)
	    {
		// Use the Selector to get the preferred access point

		m_bSelectAPPending = TRUE;
		res = m_pAPSelector->SelectAccessPoint(this);

		if (HXR_OK != res)
		{
		    m_bSelectAPPending = FALSE;
		}
	    }
	    else
	    {
		// A SelectAccessPoint() request is currently
		// pending
		res = HXR_OK;
	    }
	}
	else
	{
	    // We have no way to get access point information.
	    res = HXR_NET_CONNECT;
	}
    }

    if ((HXR_OK == res) && bQueueResponse)
    {
	pResp->AddRef();
	m_respList.AddTail(pResp);
    }

    return res;
}

HX_RESULT HXSymbianAccessPointManager::StartConnection()
{
    DPRINTF(D_AP_MANAGER, ("HXSymbianAccessPointManager::StartConnection()\n"));

    HX_RESULT res = HXR_UNEXPECTED;
    BOOL bConnect = TRUE;

    if (apIdle == m_state)
    {
	m_ulRetryCount = DefaultNumOfRetries;
    }
    else if (apConnecting != m_state)
    {
	bConnect = FALSE;
    }

    if (bConnect && m_pPreferredInfo)
    {
	ULONG32 ulAccessPointID = 0;
	res = m_pPreferredInfo->GetPropertyULONG32("ID", ulAccessPointID);

	if (HXR_OK == res)
	{
	    res = m_pConnector->Connect(ulAccessPointID);

	    if (HXR_OK == res)
	    {
		m_state = apConnecting;
	    }
	}
    }

    DPRINTF(D_AP_MANAGER, 
	    ("HXSymbianAccessPointManager::StartConnection() : res %08x\n",
	     res));

    return res;
}

void HXSymbianAccessPointManager::ConnectDone(HX_RESULT status)
{
    DPRINTF(D_AP_MANAGER, 
	    ("HXSymbianAccessPointManager::ConnectDone(%08x)\n",
	     status));

    HX_ASSERT(apConnecting == m_state);

    BOOL bReportStatus = TRUE;

    if (HXR_OK == status)
    {
	m_state = apConnected;
    }
    else if (m_ulRetryCount)
    {
	// Sometimes the first connect fails if we
	// disconnect from an access point and then
	// connect to a different one. This is a
	// documented Symbian bug.

	// Try to connect again
	m_ulRetryCount--;

	status = StartConnection();

	if (HXR_OK == status)
	{
	    bReportStatus = FALSE;
	}
    }
    else
    {
	// Connect and all retries failed.
	// Transition back to the idle state
	m_state = apIdle;
    }

    if (bReportStatus)
    {
	DispatchConnectDones(status);
    }
}

HX_RESULT HXSymbianAccessPointManager::StartDisconnect()
{
    DPRINTF(D_AP_MANAGER, ("HXSymbianAccessPointManager::StartDisconnect()\n"));

    HX_RESULT res = HXR_FAILED;
    
    if (HXR_OK == m_pConnector->Disconnect())
    {
	m_state = apDisconnecting;
	res = HXR_OK;
    }

    DPRINTF(D_AP_MANAGER, 
	    ("HXSymbianAccessPointManager::StartDisconnect() : res %08x\n",
	     res));

    return res;

}

void HXSymbianAccessPointManager::DisconnectDone(HX_RESULT status)
{
    DPRINTF(D_AP_MANAGER, 
	    ("HXSymbianAccessPointManager::DisconnectDone(%08x)\n",
	     status));

    HX_ASSERT(apDisconnecting == m_state);

    m_state = apIdle;

    if (HXR_OK == status)
    {
	// Try to connect now
	status = DoConnect(0);
    }
    
    if (HXR_OK != status)
    {
	// We failed to reconnect. Send the
	// failure code to the response objects
	DispatchConnectDones(status);
    }
}

void HXSymbianAccessPointManager::DispatchConnectDones(HX_RESULT status)
{
    DPRINTF(D_AP_MANAGER, 
	    ("HXSymbianAccessPointManager::DispatchConnectDones(%08x)\n",
	     status));

    // Handle any pending connect requests
    while(!m_respList.IsEmpty())
    {
	IHXAccessPointConnectResponse* pResp = 
	    (IHXAccessPointConnectResponse*)m_respList.RemoveHead();

	pResp->ConnectDone(status);
	HX_RELEASE(pResp);
    }
}

HX_RESULT HXSymbianAccessPointManager::GetPreferredID(REF(ULONG32) ulID)
{
    HX_RESULT res = HXR_FAILED;

    if (m_pPreferredInfo)
    {
	res = m_pPreferredInfo->GetPropertyULONG32("ID", ulID);
    }

    return res;
}

HX_RESULT HXSymbianAccessPointManager::GetActiveID(REF(ULONG32) ulID)
{
    HX_RESULT res = HXR_FAILED;

    TUint32 aIAPId = 0;
    if (m_pConnInit && (KErrNone == m_pConnInit->GetActiveIap(aIAPId)))
    {
	ulID = aIAPId;
	res = HXR_OK;
    }

    return res;
}