///////////////////////////////////////////////////////////////////
// DoCallMedia
//
//
// TE_CALLMEDIA is a media event. pEvent is an ITCallMediaEvent
//
//
///////////////////////////////////////////////////////////////////
HRESULT DoCallMedia(
IN IDispatch * pEvent)
{
CALL_MEDIA_EVENT cme = CME_STREAM_INACTIVE;
ITCallMediaEvent * pCallMediaEvent = NULL;
//
// check if we still have a call
//
if(NULL == g_pCall)
{
return E_UNEXPECTED;
}
//
// Get the interface
//
HRESULT hr = pEvent->QueryInterface( IID_ITCallMediaEvent, (void **)&pCallMediaEvent );
if(FAILED(hr))
{
DoMessage( _T("ITCallMediaEvent, but failed to get the interface"));
return hr;
}
//
// get the CALL_MEDIA_EVENT that we are being notified of.
//
hr = pCallMediaEvent->get_Event( &cme );
if(FAILED(hr))
{
pCallMediaEvent->Release();
DoMessage( _T("ITCallMediaEvent, but failed to get_Event"));
return hr;
}
switch ( cme )
{
//
// the only event we process
//
case CME_STREAM_ACTIVE:
{
//
// Get the terminal that's now active.
//
ITTerminal * pTerminal = NULL;
hr = GetTerminalFromStreamEvent(pCallMediaEvent, &pTerminal);
if ( FAILED(hr) )
{
DoMessage(_T("ITCallMediaEvent: GetTerminalFromStreamEvent failed"));
g_pCall->Disconnect(DC_NORMAL);
break;
}
//
// Process this terminal based on the direction.
//
TERMINAL_DIRECTION td;
hr = pTerminal->get_Direction( &td);
//
//clean up
//
pTerminal->Release();
if ( FAILED(hr) )
{
DoMessage(_T("ITCallMediaEvent: get_Direction failed"));
g_pCall->Disconnect(DC_NORMAL);
break;
}
//
// if TD_CAPTURE and we have playback terminal start streaming
//
if ( TD_CAPTURE == td && NULL != g_pPlayFileTerm)
{
ITMediaControl* pITMC = NULL;
hr = g_pPlayFileTerm->QueryInterface(IID_ITMediaControl, (void**)&pITMC);
//
// get ITMediaControl so we can start streaming
//
if(FAILED(hr))
{
DoMessage(_T("ITCallMediaEvent: g_pPlayFileTerm QI for ITMediaControl failed"));
g_pCall->Disconnect(DC_NORMAL);
break;
}
//
// Start streaming
//
hr = pITMC->Start();
pITMC->Release();
if(SUCCEEDED(hr))
{
SetStatusMessage(_T("File Playback Terminal started "));
}
else
{
DoMessage(_T("ITCallMediaEvent: ITMediaControl::Start() failed"));
g_pCall->Disconnect(DC_NORMAL);
}
}
break;
}
default:
break;
}
//
// clean up
//
pCallMediaEvent->Release();
return hr;
}
HRESULT
OnTapiEvent(
TAPI_EVENT TapiEvent,
IDispatch * pEvent
)
{
HRESULT hr;
switch ( TapiEvent )
{
case TE_CALLNOTIFICATION:
{
//
// TE_CALLNOTIFICATION means that the application is being notified
// of a new call.
//
// Note that we don't answer to call at this point. The application
// should wait for a CS_OFFERING CallState message before answering
// the call.
//
ITCallNotificationEvent * pNotify;
hr = pEvent->QueryInterface( IID_ITCallNotificationEvent, (void **)&pNotify );
if (S_OK != hr)
{
DoMessage( L"Incoming call, but failed to get the interface");
}
else
{
CALL_PRIVILEGE cp;
ITCallInfo * pCall;
//
// get the call
//
hr = pNotify->get_Call( &pCall );
pNotify->Release();
if ( SUCCEEDED(hr) )
{
//
// check to see if we own the call
//
hr = pCall->get_Privilege( &cp );
if ( FAILED(hr) || (CP_OWNER != cp) )
{
//
// just ignore it if we don't own it
//
pCall->Release();
pEvent->Release(); // we addrefed it CTAPIEventNotification::Event()
return S_OK;
}
//
// Get the ITBasicCallControl interface
//
//
// If we're already in a call, disconnect the new call. Otherwise,
// save it in our global variable.
//
ITBasicCallControl * pCallControl;
hr = pCall->QueryInterface( IID_ITBasicCallControl,
(void**)&pCallControl );
pCall->Release();
if ( SUCCEEDED(hr) )
{
if (gpCall == NULL)
{
gpCall = pCallControl;
//
// update UI
//
EnableButton( IDC_ANSWER );
DisableButton( IDC_DISCONNECT );
SetStatusMessage(L"Incoming Owner Call");
}
else
{
//
// Reject this call since we're already in a call
//
hr = pCallControl->Disconnect(DC_REJECTED);
pCallControl->Release();
if (FAILED(hr))
{
break;
}
}
}
}
}
break;
}
case TE_CALLSTATE:
{
// TE_CALLSTATE is a call state event. pEvent is
// an ITCallStateEvent
CALL_STATE cs;
ITCallStateEvent * pCallStateEvent;
ITCallInfo * pCall;
ITBasicCallControl * pCallControl;
// Get the interface
hr = pEvent->QueryInterface( IID_ITCallStateEvent, (void **)&pCallStateEvent );
if ( FAILED(hr) )
{
break;
}
// get the CallInfo interface
hr = pCallStateEvent->get_Call( &pCall );
if ( FAILED(hr) )
{
pCallStateEvent->Release();
break;
}
//get the ITBasicCallControl interface and compare it to our existing call
hr = pCall->QueryInterface( IID_ITBasicCallControl,(void**)&pCallControl );
pCall->Release();
if (FAILED(hr))
{
pCallStateEvent->Release();
break;
}
//ignore call state events for other calls
if (pCallControl != gpCall)
{
pCallControl->Release();
pCallStateEvent->Release();
break;
}
pCallControl->Release();
//
// This is a call state event for our call
//
// get the CallState that we are being notified of.
hr = pCallStateEvent->get_State( &cs );
// Release the interface
pCallStateEvent->Release();
if ( FAILED(hr) )
{
break;
}
// if it's offering, update our UI
if (CS_OFFERING == cs)
{
if (gfAutoAnswer)
{
PostMessage(ghDlg, WM_COMMAND, IDC_ANSWER, 0);
}
else
{
SetStatusMessage(L"Click the Answer button");
}
}
else if (CS_DISCONNECTED == cs)
{
PostMessage(ghDlg, WM_COMMAND, IDC_DISCONNECTED, 0);
}
else if (CS_CONNECTED == cs)
{
// nothing to do -- we handle connection synchronously
}
break;
}
case TE_CALLMEDIA:
{
// TE_CALLMEDIA is a media event. pEvent is
// an ITCallMediaEvent
CALL_MEDIA_EVENT cme;
ITCallMediaEvent * pCallMediaEvent;
// Get the interface
hr = pEvent->QueryInterface( IID_ITCallMediaEvent, (void **)&pCallMediaEvent );
if ( FAILED(hr) )
{
break;
}
// get the CALL_MEDIA_EVENT that we are being notified of.
hr = pCallMediaEvent->get_Event( &cme );
if ( SUCCEEDED(hr) )
{
switch ( cme )
{
case CME_STREAM_NOT_USED:
case CME_STREAM_INACTIVE:
case CME_NEW_STREAM:
break;
case CME_STREAM_FAIL:
DoMessage( L"Call media event: stream failed");
break;
case CME_TERMINAL_FAIL:
DoMessage( L"Call media event: terminal failed");
break;
case CME_STREAM_ACTIVE:
{
//
// Find out if this stream has a video render terminal. If not,
// we don't need to do anything with this stream. Also note
// if this is the video capture stream or the video render
// stream.
//
ITTerminal * pTerminal;
BOOL fRenderStream;
hr = GetVideoRenderTerminalFromStreamEvent(
pCallMediaEvent,
&pTerminal,
&fRenderStream
);
if ( SUCCEEDED(hr) )
{
// Get the video window interface for the terminal
IVideoWindow *pVideoWindow = NULL;
hr = pTerminal->QueryInterface( IID_IVideoWindow, (void**)&pVideoWindow );
pTerminal->Release();
if ( SUCCEEDED(hr) )
{
// Put this window in our dialog
HostWindow(pVideoWindow, fRenderStream);
pVideoWindow->Release();
}
}
break;
}
default:
break;
}
}
// We no longer need this interface.
pCallMediaEvent->Release();
break;
}
default:
break;
}
pEvent->Release(); // we addrefed it CTAPIEventNotification::Event()
return S_OK;
}
