public override void Process()
{
if (_attrStartAt.TypedGet() == SustainMode.StartAtFallingEdge)
{
foreach (var tuple in _portIn.Read().ZipWithValueInput(_portThresh))
{
if (tuple.Sample >= tuple.Scalar)
{
_timeBecomeInactive = tuple.Stamp.Increment(_attrActiveDurationMillis.TypedGet() / 1000.0);
if (_active == TristateActive.Inactive)
{
_active = TristateActive.Active;
_portOut.BufferForTransfer(new TimeLocatedValue <double>(1, tuple.Stamp));
}
}
else
{
if (_active == TristateActive.Active && _timeBecomeInactive <= tuple.Stamp)
{
_active = TristateActive.Inactive;
_portOut.BufferForTransfer(new TimeLocatedValue <double>(0, tuple.Stamp));
}
}
}
}
else if (_attrStartAt.TypedGet() == SustainMode.StartAtRisingEdge)
{
foreach (var tuple in _portIn.Read().ZipWithValueInput(_portThresh))
{
if (tuple.Sample >= tuple.Scalar)
{
if (_active == TristateActive.Inactive)
{
_timeBecomeInactive = tuple.Stamp.Increment(_attrActiveDurationMillis.TypedGet() / 1000.0);
_active = TristateActive.Active;
_portOut.BufferForTransfer(new TimeLocatedValue <double>(1, tuple.Stamp));
}
}
else
{
if (_active == TristateActive.BecomingInactive)
{
_active = TristateActive.Inactive;
}
}
if (_active == TristateActive.Active && _timeBecomeInactive <= tuple.Stamp)
{
_active = TristateActive.BecomingInactive;
_portOut.BufferForTransfer(new TimeLocatedValue <double>(0, tuple.Stamp));
}
}
}
}
public MetricFilter(Graph graph) : base("Filter", graph)
{
_portInp = new InputPortData1D(this, "In");
_portOut = new OutputPortData1D(this, "Out");
_portInp.SamplerateChanged += portInp_SamplerateChanged;
_attrCenterFrequency = new AttributeValueDouble(this, "Center", "Hz");
_attrPeakGainDb = new AttributeValueDouble(this, "Gain", "dB");
_attrQFactor = new AttributeValueDouble(this, "Q");
_attrType = new AttributeValueEnum <Biquad.BiquadType>(this, "Type");
_attrCenterFrequency.Changed += (s, e) => _bpf.Fc = _portOut.Samplerate > 0 ? _attrCenterFrequency.TypedGet() / _portOut.Samplerate : 0;
_attrPeakGainDb.Changed += (s, e) => _bpf.PeakGainDb = _attrPeakGainDb.TypedGet();
_attrQFactor.Changed += (s, e) => _bpf.Q = _attrQFactor.TypedGet();
_attrType.Changed += (s, e) => _bpf.Type = _attrType.TypedGet();
}
public override void PrepareProcessing()
{
_reader?.Dispose();
try {
_reader = new System.IO.BinaryReader(System.IO.File.OpenRead(_attrFilePath.TypedGet()));
} catch (Exception ex) {
Parent.Context.Notify(new GraphNotification(GraphNotification.NotificationType.Error, ex.ToString()));
throw;
}
if (_reader != null)
{
_reader.BaseStream.Seek(0, System.IO.SeekOrigin.Begin);
_portOut.PrepareProcessing();
_portTrigger.PrepareProcessing();
_buffer = new TimeLocatedBuffer1D <double>(_portOut.Buffer.Capacity, _portOut.Samplerate);
_endOfStream = false;
if (_portTrigger.Connection == null)
{
_startTime = new TimeStamp(0);
}
}
else
{
throw new Exception("File node: did not specify input");
}
_lastStatePosition = 0;
_sampleSize = _dataTypeSizes[_attrDataType.TypedGet()];
_sampleGetterFunc = () => {
throw new System.IO.EndOfStreamException();
};
switch (_attrDataType.TypedGet())
{
case DataType.Float32:
_sampleGetterFunc = () => _reader.ReadSingle();
break;
case DataType.Float64:
_sampleGetterFunc = () => _reader.ReadDouble();
break;
case DataType.Int16:
_sampleGetterFunc = () => _reader.ReadInt16();
break;
case DataType.Int32:
_sampleGetterFunc = () => _reader.ReadInt32();
break;
case DataType.Int64:
_sampleGetterFunc = () => _reader.ReadInt64();
break;
default:
throw new NotImplementedException();
}
}