func (s Stage) fir(f resp.FIR) stationxml.ResponseStage {
var coeffs []stationxml.NumeratorCoefficient
for j, c := range f.Factors {
coeffs = append(coeffs, stationxml.NumeratorCoefficient{
Coefficient: int32(j + 1),
Value: c,
})
}
fir := stationxml.FIR{
BaseFilter: stationxml.BaseFilter{
ResourceId: "FIR#" + s.id,
Name: s.responseStage.Lookup,
InputUnits: stationxml.Units{Name: s.responseStage.InputUnits},
OutputUnits: stationxml.Units{Name: s.responseStage.OutputUnits},
},
Symmetry: stationxml.Symmetry(f.Symmetry),
/*
func() stationxml.Symmetry {
switch strings.ToUpper(f.Symmetry) {
case "EVEN":
return stationxml.SymmetryEven
case "ODD":
return stationxml.SymmetryOdd
default:
return stationxml.SymmetryNone
}
}(),
*/
NumeratorCoefficients: coeffs,
}
return stationxml.ResponseStage{
Number: stationxml.Counter(uint32(s.count)),
FIR: &fir,
//TODO: check we may need to adjust gain for different frequency
StageGain: stationxml.Gain{
Value: func() float64 {
if s.responseStage.Gain != 0.0 {
return s.responseStage.Gain
}
return 1.0
}(),
//Frequency: stage.Frequency,
Frequency: s.frequency,
},
Decimation: &stationxml.Decimation{
InputSampleRate: stationxml.Frequency{stationxml.Float{Value: f.Decimation * s.responseStage.SampleRate}},
Factor: func() int32 {
if s.responseStage.Decimate != 0 {
return s.responseStage.Decimate
}
return int32(f.Decimation)
}(),
Delay: stationxml.Float{Value: s.responseStage.Delay},
Correction: stationxml.Float{Value: s.responseStage.Correction},
},
}
}
func firResponseStage(filter resp.FIR, stage Stage) stationxml.ResponseStage {
var coeffs []stationxml.NumeratorCoefficient
for j, c := range filter.Factors {
coeffs = append(coeffs, stationxml.NumeratorCoefficient{
Coefficient: int32(j + 1),
Value: c,
})
}
fir := stationxml.FIR{
BaseFilter: stationxml.BaseFilter{
ResourceId: "FIR#" + stage.id,
Name: filter.Name,
InputUnits: stationxml.Units{Name: stage.responseStage.InputUnits},
OutputUnits: stationxml.Units{Name: stage.responseStage.OutputUnits},
},
Symmetry: stationxml.Symmetry(filter.Symmetry),
NumeratorCoefficients: coeffs,
}
return stationxml.ResponseStage{
Number: stationxml.Counter(uint32(stage.count)),
FIR: &fir,
//TODO: check we may need to adjust gain for different frequency
StageGain: stationxml.Gain{
Value: func() float64 {
if stage.responseStage.Gain != 0.0 {
return stage.responseStage.Gain
}
return 1.0
}(),
Frequency: stage.frequency,
},
Decimation: &stationxml.Decimation{
InputSampleRate: stationxml.Frequency{stationxml.Float{Value: filter.Decimation * stage.responseStage.SampleRate}},
Factor: func() int32 {
if stage.responseStage.Decimate != 0 {
return stage.responseStage.Decimate
}
return int32(filter.Decimation)
}(),
Delay: stationxml.Float{Value: stage.responseStage.Delay},
Correction: stationxml.Float{Value: stage.responseStage.Correction},
},
}
}