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feat(tracker): add a rudimentary VU-meter to show master volume, peaks & clipping

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Closes #16
This commit is contained in:
vsariola
2021-02-16 12:23:18 +02:00
parent 962d0f1152
commit 088bbc6c58
4 changed files with 98 additions and 4 deletions
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16
tracker/tracker.go
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@ -71,6 +71,7 @@ type Tracker struct {
InstrumentDragList *DragList
TrackHexCheckBoxes []*widget.Bool
TrackShowHex []bool
VuMeter VuMeter
TopHorizontalSplit *Split
BottomHorizontalSplit *Split
VerticalSplit *Split
@ -695,10 +696,23 @@ func New(audioContext sointu.AudioContext, synthService sointu.SynthService) *Tr
t.TopHorizontalSplit.Ratio = -.6
t.Theme.Palette.Fg = primaryColor
t.Theme.Palette.ContrastFg = black
t.EditMode = EditTracks
t.Step.Value = 1
t.VuMeter.FallOff = 2e-8
t.VuMeter.RangeDb = 80
t.VuMeter.Decay = 1e-3
for range allUnits {
t.ChooseUnitTypeBtns = append(t.ChooseUnitTypeBtns, new(widget.Clickable))
}
t.sequencer = NewSequencer(2048, synthService, audioContext, func(row []RowNote) []RowNote {
callBack := func(buf []float32) {
t.VuMeter.Update(buf)
select {
case t.refresh <- struct{}{}:
default:
// message dropped, there's already a tick queued, so no need to queue extra
}
}
t.sequencer = NewSequencer(2048, synthService, audioContext, callBack, func(row []RowNote) []RowNote {
t.playRowPatMutex.Lock()
if !t.Playing {
t.playRowPatMutex.Unlock()