/// <summary>
/// Initializes a new instance of the <see cref="AnalogSubChannel"/> class.
/// </summary>
internal AnalogSubChannel(TvCardAnalog card, int subchnnelId, TvAudio tvAudio, bool hasTeletext,
IBaseFilter mpFileWriter)
{
_card = card;
_hasTeletext = hasTeletext;
_tvAudio = tvAudio;
_mpFileWriter = mpFileWriter;
_mpRecord = (IMPRecord)_mpFileWriter;
_mpRecord.AddChannel(ref _subChannelId);
_subChannelId = subchnnelId;
}
/// <summary>
/// Initializes a new instance of the <see cref="AnalogSubChannel"/> class.
/// </summary>
internal AnalogSubChannel(TvCardAnalog card, int subchnnelId, TvAudio tvAudio, bool hasTeletext,
IBaseFilter mpFileWriter)
{
_card = card;
_hasTeletext = hasTeletext;
_tvAudio = tvAudio;
_mpFileWriter = mpFileWriter;
_mpRecord = (IMPRecord)_mpFileWriter;
_mpRecord.AddChannel(ref _subChannelId);
_subChannelId = subchnnelId;
}
/// <summary>
/// Stops the current graph
/// </summary>
/// <returns></returns>
public override void StopGraph()
{
if (!CheckThreadId())
{
return;
}
FreeAllSubChannels();
FilterState state;
if (_graphBuilder == null)
{
return;
}
IMediaControl mediaCtl = (_graphBuilder as IMediaControl);
if (mediaCtl == null)
{
throw new TvException("Can not convert graphBuilder to IMediaControl");
}
mediaCtl.GetState(10, out state);
Log.Log.WriteFile("analog: StopGraph state:{0}", state);
_isScanning = false;
if (_tsFileSink != null)
{
IMPRecord record = _tsFileSink as IMPRecord;
if (record != null)
{
record.StopTimeShifting(_subChannelId);
record.StopRecord(_subChannelId);
}
}
if (state == FilterState.Stopped)
{
_graphState = GraphState.Created;
return;
}
int hr = mediaCtl.Stop();
if (hr < 0 || hr > 1)
{
Log.Log.WriteFile("analog: RunGraph returns:0x{0:X}", hr);
throw new TvException("Unable to stop graph");
}
Log.Log.WriteFile("analog: Graph stopped");
}
