public HResult GetEvent(MFEventFlag dwFlags, out IMFMediaEvent ppEvent)
{
Debug.WriteLine("StreamSink:GetEvent");
HResult hr;
IMFMediaEventQueueAlt queue = null;
ppEvent = null;
lock (this)
{
hr = CheckShutdown();
LogIfFailed(hr);
if (Succeeded(hr))
{
GenEventQueue();
queue = EventQueue;
Marshal.AddRef(Marshal.GetIUnknownForObject(queue));
}
}
if (Succeeded(hr))
{
hr = queue.GetEvent(dwFlags, out ppEvent);
LogIfFailed(hr);
}
SafeRelease(queue);
return(hr);
}
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);
}
private void ProcesssMediaEvents()
{
Dispatcher.BeginInvoke((Action) delegate
{
if (m_pSession != null)
{
IMFMediaEvent pmet;
MFEventFlag flags = MFEventFlag.NoWait;
/* Get all the queued events from the interface */
while (m_pSession.GetEvent(flags, out pmet) == 0)
{
/* Handle anything for this event code */
OnMediaEvent(pmet);
}
}
});
}
public int GetEvent(MFEventFlag dwFlags, out IMFMediaEvent ppEvent)
{
int hr;
TRACE("CWavStream::GetEvent");
// NOTE:
// GetEvent can block indefinitely, so we don't hold the lock.
// This requires some juggling with the event queue pointer.
IMFMediaEventQueueAlt pQueue;
lock (this)
{
// Check shutdown
CheckShutdown();
// Get the pointer to the event queue.
pQueue = m_pEventQueue;
} // release lock
// Now get the event.
hr = pQueue.GetEvent(dwFlags, out ppEvent);
MFError.ThrowExceptionForHR(hr);
//SAFE_RELEASE(pQueue);
return S_Ok;
}
public int GetEvent(MFEventFlag dwFlags, out IMFMediaEvent ppEvent)
{
// Make sure we *never* leave this entry point with an exception
try
{
// NOTE: GetEvent can block indefinitely, so we don't hold the
// WavSource lock. This requires some juggling with the
// event queue pointer.
int hr;
m_Log.WriteLine("-GetEvent");
ppEvent = null;
IMFMediaEventQueue pQueue = null;
lock (this)
{
// Check shutdown
CheckShutdown();
pQueue = m_pEventQueue;
}
hr = pQueue.GetEvent(dwFlags, out ppEvent);
MFError.ThrowExceptionForHR(hr);
// not needed SAFE_RELEASE(pQueue);
return S_Ok;
}
catch (Exception e)
{
ppEvent = null;
return Marshal.GetHRForException(e);
}
}
public int GetEvent(MFEventFlag dwFlags, out IMFMediaEvent ppEvent)
{
// Make sure we *never* leave this entry point with an exception
try
{
int hr;
m_Log.WriteLine("-GetEvent");
ppEvent = null;
IMFMediaEventQueue pQueue = null;
lock (this)
{
CheckShutdown();
pQueue = (IMFMediaEventQueue)m_pEventQueue;
}
hr = pQueue.GetEvent(dwFlags, out ppEvent);
MFError.ThrowExceptionForHR(hr);
//not needed SAFE_RELEASE(pQueue);
return S_Ok;
}
catch (Exception e)
{
ppEvent = null;
return Marshal.GetHRForException(e);
}
}
