/// <summary>
/// Waits for the specified event.
/// </summary>
/// <param name="desiredEventCode">event code to wait for</param>
/// <param name="msTimeout">timeout</param>
/// <param name="actuallyReceivedEventCode">The event actually received, or "0" if no event was received</param>
/// <param name="param">1st parameter associated with event</param>
/// <returns>True if the desired event was received. False if timed out, or different event received</returns>
public bool WaitForEvent(EventCode desiredEventCode, int msTimeout, out EventCode actuallyReceivedEventCode, out int param)
{
bool restartTimer = false;
if (_mediaSeekTimer.Enabled)
{
_mediaSeekTimer.Stop();
restartTimer = true;
}
int hr = 0;
IntPtr lparam1, lparam2;
hr = _mediaEvent.GetEvent(out actuallyReceivedEventCode, out lparam1, out lparam2, msTimeout);
if (DsError.Succeeded(hr))
{
Debug.WriteLine("WaitForEvent got " + actuallyReceivedEventCode.ToString() + " 0x" + lparam1.ToString("X") + " 0x" + lparam2.ToString("X"));
param = lparam1.ToInt32();
_mediaEvent.FreeEventParams(actuallyReceivedEventCode, lparam1, lparam2);
}
else
{
actuallyReceivedEventCode = 0;
param = 0;
}
if (restartTimer)
{
_mediaSeekTimer.Start();
}
return(DsError.Succeeded(hr) && (actuallyReceivedEventCode == desiredEventCode));
}
/// <summary>
/// Wait X milliseconds for the graph to receive the EC_COMPLETE
/// </summary>
/// <param name="msTimeout">number of milliseconds to timeout before returning, or -1 for INFINITE</param>
/// <returns>
/// Complete - Operation completed.
/// ErrorAbort - Error. Playback cannot continue.
/// UserAbort - User terminated the operation.
/// Unbuilt - Cannot execute this method
/// 0 - graph is still running
/// </returns>
public EventCode WaitForCompletion(int msTimeout)
{
if (_mediaEvent != null)
{
EventCode e;
int hr = _mediaEvent.WaitForCompletion(msTimeout, out e);
if (DsError.Succeeded(hr))
{
return(e);
}
else
{
return(0);
}
}
return(EventCode.Unbuilt);
}