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feat(sointu): add functions to convert unit parameter values into human readable strings

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This commit is contained in:
vsariola 2021-02-07 19:57:01 +02:00
parent 56d8ca574e
commit af52aa9e51
2 changed files with 65 additions and 10 deletions
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66
sointu.go
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@ -147,6 +147,27 @@ type UnitParameter struct {
MaxValue int // maximum value of the parameter, inclusive
CanSet bool // if this parameter can be set before hand i.e. through the gui
CanModulate bool // if this parameter can be modulated i.e. has a port number in "send" unit
ToString func(value int) string
}
func engineeringTime(sec float64) string {
if sec < 1e-3 {
return fmt.Sprintf("%.2f us", sec*1e6)
} else if sec < 1 {
return fmt.Sprintf("%.2f ms", sec*1e3)
}
return fmt.Sprintf("%.2f s", sec)
}
func nonLinearMapToString(value int) string {
sec := math.Pow(2, 24*float64(value)/128) / 44100
return engineeringTime(sec)
}
func compressorToString(value int) string {
alpha := math.Pow(2, -24*float64(value)/128) // alpha is the "smoothing factor" of first order low pass iir
sec := -1 / (44100 * math.Log(1-alpha)) // from smoothing factor to time constant, https://en.wikipedia.org/wiki/Exponential_smoothing
return engineeringTime(sec)
}
// UnitTypes documents all the available unit types and if they support stereo variant
@ -198,11 +219,13 @@ var UnitTypes = map[string]([]UnitParameter){
{Name: "delaytime", MinValue: 0, MaxValue: -1, CanSet: false, CanModulate: true}},
"compressor": []UnitParameter{
{Name: "stereo", MinValue: 0, MaxValue: 1, CanSet: true, CanModulate: false},
{Name: "attack", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "release", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "attack", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true, ToString: compressorToString},
{Name: "release", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true, ToString: compressorToString},
{Name: "invgain", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "threshold", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "ratio", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true}},
{Name: "ratio", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true, ToString: func(value int) string {
return fmt.Sprintf("1 : %.3f", 1-float64(value)/128)
}}},
"speed": []UnitParameter{},
"out": []UnitParameter{
{Name: "stereo", MinValue: 0, MaxValue: 1, CanSet: true, CanModulate: false},
@ -224,10 +247,10 @@ var UnitTypes = map[string]([]UnitParameter){
{Name: "sendpop", MinValue: 0, MaxValue: 1, CanSet: true, CanModulate: false}},
"envelope": []UnitParameter{
{Name: "stereo", MinValue: 0, MaxValue: 1, CanSet: true, CanModulate: false},
{Name: "attack", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "decay", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "attack", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true, ToString: nonLinearMapToString},
{Name: "decay", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true, ToString: nonLinearMapToString},
{Name: "sustain", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "release", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "release", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true, ToString: nonLinearMapToString},
{Name: "gain", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true}},
"noise": []UnitParameter{
{Name: "stereo", MinValue: 0, MaxValue: 1, CanSet: true, CanModulate: false},
@ -235,13 +258,38 @@ var UnitTypes = map[string]([]UnitParameter){
{Name: "gain", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true}},
"oscillator": []UnitParameter{
{Name: "stereo", MinValue: 0, MaxValue: 1, CanSet: true, CanModulate: false},
{Name: "transpose", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "detune", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "transpose", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true, ToString: func(value int) string {
value -= 64
octaves := value / 12
semitones := value % 12
if octaves != 0 {
return fmt.Sprintf("%v octaves, %v semitones", octaves, semitones)
}
return fmt.Sprintf("%v semitones", semitones)
}},
{Name: "detune", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true, ToString: func(value int) string {
return fmt.Sprintf("%v semitones", float32(value-64)/64.0)
}},
{Name: "phase", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "color", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "shape", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "gain", MinValue: 0, MaxValue: 128, CanSet: true, CanModulate: true},
{Name: "type", MinValue: int(Sine), MaxValue: int(Sample), CanSet: true, CanModulate: false},
{Name: "type", MinValue: int(Sine), MaxValue: int(Sample), CanSet: true, CanModulate: false, ToString: func(value int) string {
switch value {
case Sine:
return "Sine"
case Trisaw:
return "Trisaw"
case Pulse:
return "Pulse"
case Gate:
return "Gate"
case Sample:
return "Sample"
default:
return "Unknown"
}
}},
{Name: "lfo", MinValue: 0, MaxValue: 1, CanSet: true, CanModulate: false},
{Name: "unison", MinValue: 0, MaxValue: 3, CanSet: true, CanModulate: false},
{Name: "samplestart", MinValue: 0, MaxValue: 3440659, CanSet: true, CanModulate: false},

9
tracker/uniteditor.go
View File

@ -50,6 +50,13 @@ func (t *Tracker) layoutUnitSliders(gtx C) D {
t.ParameterSliders[index].Value = float32(params[ut[index].Name])
sliderStyle := material.Slider(t.Theme, t.ParameterSliders[index], float32(ut[index].MinValue), float32(ut[index].MaxValue))
sliderStyle.Color = t.Theme.Fg
var valueText string
value := params[ut[index].Name]
if ut[index].ToString != nil {
valueText = fmt.Sprintf("%v / %v", value, ut[index].ToString(value))
} else {
valueText = fmt.Sprintf("%v", value)
}
return layout.Flex{Axis: layout.Horizontal, Alignment: layout.Middle}.Layout(gtx,
layout.Rigid(func(gtx C) D {
gtx.Constraints.Min.X = gtx.Px(unit.Dp(110))
@ -59,7 +66,7 @@ func (t *Tracker) layoutUnitSliders(gtx C) D {
gtx.Constraints.Min.X = gtx.Px(unit.Dp(200))
return sliderStyle.Layout(gtx)
}),
layout.Rigid(Label(fmt.Sprintf("%v", params[ut[index].Name]), white)),
layout.Rigid(Label(valueText, white)),
)
}
return t.ParameterList.Layout(gtx, len(ut), listElements)