public HResult GetEvent(MFEventFlag dwFlags, out IMFMediaEvent ppEvent)
{
// NOTE:
// GetEvent can block indefinitely, so we don't hold the lock.
// This requires some juggling with the event queue pointer.
HResult hr = HResult.S_OK;
IMFMediaEventQueue spQueue = null;
ppEvent = null;
lock (_spSource)
{
// Check shutdown
hr = CheckShutdown();
// Get the pointer to the event queue.
if (MFError.Succeeded(hr))
{
spQueue = _spEventQueue;
}
}
// Now get the event.
if (MFError.Succeeded(hr))
{
hr = spQueue.GetEvent(dwFlags, out ppEvent);
}
return(hr);
}
public HResult GetEvent(MFEventFlag dwFlags, out IMFMediaEvent ppEvent)
{
HResult hr;
hr = m_events.GetEvent(dwFlags, out ppEvent);
return(hr);
}