/// <summary>
/// Finds the VBI pin on the video capture device.
/// If it existst the pin is stored in _pinVBI
/// </summary>
/// <param name="graph">The stored graph</param>
private void FindVBIPin(Graph graph)
{
Log.Log.WriteFile("analog: FindVBIPin on VideoCapture");
int pinIndex;
try
{
IPin pinVBI = FilterGraphTools.GetPinByCategoryAndDirection(_filterVideoCapture, PinCategory.VideoPortVBI, 0,
PinDirection.Output, out pinIndex);
if (pinVBI != null)
{
Log.Log.WriteFile("analog: VideoPortVBI pin found");
Release.ComObject(pinVBI);
return;
}
pinVBI = FilterGraphTools.GetPinByCategoryAndDirection(_filterVideoCapture, PinCategory.VBI, 0,
PinDirection.Output, out pinIndex);
if (pinVBI != null)
{
Log.Log.WriteFile("analog: VBI pin found");
graph.Capture.TeletextPin = pinIndex;
_pinVBI = pinVBI;
return;
}
}
catch (COMException ex)
{
if (ex.ErrorCode.Equals(unchecked ((Int32)0x80070490)))
{
// pin on a NVTV capture filter is named VBI..
Log.Log.WriteFile("analog: getCategory not supported by collection ? ERROR:0x{0:x} :" + ex.Message,
ex.ErrorCode);
if (_filterVideoCapture == null)
{
return;
}
Log.Log.WriteFile("analog: find VBI pin by name");
IPin pinVBI = FilterGraphTools.GetPinByName(_filterVideoCapture, "VBI", PinDirection.Output, out pinIndex);
if (pinVBI != null)
{
Log.Log.WriteFile("analog: pin named VBI found");
graph.Capture.TeletextPin = pinIndex;
_pinVBI = pinVBI;
return;
}
}
Log.Log.WriteFile("analog: Error in searching vbi pin - Skipping error");
}
Log.Log.WriteFile("analog: FindVBIPin on VideoCapture no vbi pin found");
}
