private void _eventTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
try
{
_eventTimer.Enabled = false;
IMediaEventEx mediaEvent = _graphBuilder as IMediaEventEx;
if (mediaEvent == null)
{
AppLogger.Message("couldn't get IMediaEventEx from graph builder!");
return;
}
EventCode eventCode;
IntPtr lparam1, lparam2;
while (mediaEvent.GetEvent(out eventCode, out lparam1, out lparam2, 10) == 0)
{
AppLogger.Message("ASFNetSink -- Got Media Event: " + eventCode.ToString() + " 0x" + lparam1.ToString("X") + " 0x" + lparam2.ToString("X"));
OnDirectShowEvent(eventCode, lparam1, lparam2);
mediaEvent.FreeEventParams(eventCode, lparam1, lparam2);
}
_eventTimer.Enabled = true;
}
catch (Exception ex)
{
AppLogger.Message("ASFNetSink -- Can't get Media Event due to an error");
AppLogger.Dump(ex);
}
}
// Filter graph events
public void HandleGraphEvent(GraphEventCallback pCB)
{
if (pCB == null)
{
throw new COMException("No callback set", E_Pointer);
}
if (m_pEvent == null)
{
throw new COMException("No event pointer", E_Unexpected);
}
EventCode evCode = 0;
IntPtr param1, param2;
// Get the events from the queue.
while (Succeeded(m_pEvent.GetEvent(out evCode, out param1, out param2, 0)))
{
// Invoke the callback.
pCB.OnGraphEvent(evCode, param1, param2);
// Free the event data.
int hr = m_pEvent.FreeEventParams(evCode, param1, param2);
DsError.ThrowExceptionForHR(hr);
}
}
public override void OnVideoEvent(int cookies)
{
if (this.graphBuilder == null || this.graphBuilder2 == null)
{
return;
}
try
{
if (cookies == cookiesSink)
{
IMediaEventEx mediaEvent = this.graphBuilder as IMediaEventEx;
EventCode eventCode;
IntPtr param1, param2;
while (mediaEvent.GetEvent(out eventCode, out param1, out param2, 0) >= 0)
{
Trace.WriteLineIf(trace.TraceVerbose, "OnVideoEvent(Sink) -> " + eventCode.ToString());
if (eventCode == EventCode.VMRRenderDeviceSet)
{
VideoRefresh();
}
//switch (eventCode)
//{
// // Call application-defined functions for each
// // type of event that you want to handle.
//}
int hr = mediaEvent.FreeEventParams(eventCode, param1, param2);
}
}
else if (cookies == cookiesSource)
{
IMediaEventEx mediaEvent = this.graphBuilder2 as IMediaEventEx;
EventCode eventCode;
IntPtr param1, param2;
while (mediaEvent.GetEvent(out eventCode, out param1, out param2, 0) >= 0)
{
Trace.WriteLineIf(trace.TraceVerbose, "OnVideoEvent(Source) -> " + eventCode.ToString());
if (eventCode == EventCode.VMRRenderDeviceSet)
{
VideoRefresh();
}
//switch (eventCode)
//{
// // Call application-defined functions for each
// // type of event that you want to handle.
//}
int hr = mediaEvent.FreeEventParams(eventCode, param1, param2);
}
}
}
catch (Exception ex)
{
Trace.WriteLineIf(trace.TraceError, ex.ToString());
}
}
