/// <summary>
/// Creates the tuner filter instance
/// </summary>
/// <param name="graph">The stored graph</param>
/// <param name="graphBuilder">The graphbuilder</param>
/// <returns>true, if the graph building was successful</returns>
public bool CreateFilterInstance(Graph graph, IFilterGraph2 graphBuilder)
{
Log.Log.WriteFile("analog: AddTvTunerFilter {0}", _tunerDevice.Name);
if (DevicesInUse.Instance.IsUsed(_tunerDevice))
{
return(false);
}
IBaseFilter tmp;
int hr;
try
{
hr = graphBuilder.AddSourceFilterForMoniker(_tunerDevice.Mon, null, _tunerDevice.Name, out tmp);
}
catch (Exception)
{
Log.Log.WriteFile("analog: cannot add filter to graph");
return(false);
}
if (hr != 0)
{
Log.Log.Error("analog: AddTvTunerFilter failed:0x{0:X}", hr);
throw new TvException("Unable to add tvtuner to graph");
}
_filterTvTuner = tmp;
DevicesInUse.Instance.Add(_tunerDevice);
_tuner = _filterTvTuner as IAMTVTuner;
if (string.IsNullOrEmpty(graph.Tuner.Name) || !_tunerDevice.Name.Equals(
graph.Tuner.Name))
{
Log.Log.WriteFile("analog: Detecting capabilities of the tuner");
graph.Tuner.Name = _tunerDevice.Name;
int index;
_audioPin = FilterGraphTools.FindMediaPin(_filterTvTuner, MediaType.AnalogAudio, MediaSubType.Null,
PinDirection.Output, out index);
graph.Tuner.AudioPin = index;
return(CheckCapabilities(graph));
}
Log.Log.WriteFile("analog: Using stored capabilities of the tuner");
_audioPin = DsFindPin.ByDirection(_filterTvTuner, PinDirection.Output, graph.Tuner.AudioPin);
_supportsFMRadio = (graph.Tuner.RadioMode & RadioMode.FM) != 0;
_supportsAMRadio = (graph.Tuner.RadioMode & RadioMode.AM) != 0;
return(true);
}
