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feat(sointu): add SynthService for recompiling the synth when needed

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vsariola
2021-02-05 22:21:46 +02:00
parent 6307dd51de
commit 5e7bd75b36
5 changed files with 85 additions and 62 deletions
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82
tracker/tracker.go
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@ -9,7 +9,6 @@ import (
"gioui.org/widget"
"gioui.org/widget/material"
"github.com/vsariola/sointu"
"github.com/vsariola/sointu/bridge"
)
type Tracker struct {
@ -70,7 +69,6 @@ type Tracker struct {
rowJump chan int
patternJump chan int
audioContext sointu.AudioContext
synth sointu.Synth
playBuffer []float32
closer chan struct{}
undoStack []sointu.Song
@ -111,51 +109,17 @@ func (t *Tracker) TogglePlay() {
func (t *Tracker) sequencerLoop(closer <-chan struct{}) {
output := t.audioContext.Output()
defer output.Close()
synth, err := bridge.Synth(t.song.Patch)
if err != nil {
panic("cannot create a synth with the default patch")
}
curVoices := make([]int, 32)
t.sequencer = NewSequencer(synth, t.song.SamplesPerRow(), func() ([]Note, bool) {
t.playRowPatMutex.Lock()
if !t.Playing {
t.playRowPatMutex.Unlock()
return nil, false
}
t.PlayPosition.Row++
t.PlayPosition.Wrap(t.song)
if t.NoteTracking {
t.Cursor.SongRow = t.PlayPosition
t.SelectionCorner.SongRow = t.PlayPosition
}
notes := make([]Note, 0, 32)
for track := range t.song.Tracks {
patternIndex := t.song.Tracks[track].Sequence[t.PlayPosition.Pattern]
note := t.song.Tracks[track].Patterns[patternIndex][t.PlayPosition.Row]
if note == 1 { // anything but hold causes an action.
continue
}
first := t.song.FirstTrackVoice(track)
notes = append(notes, Note{first + curVoices[track], 0})
if note > 1 {
curVoices[track]++
if curVoices[track] >= t.song.Tracks[track].NumVoices {
curVoices[track] = 0
}
notes = append(notes, Note{first + curVoices[track], note})
}
}
t.playRowPatMutex.Unlock()
t.ticked <- struct{}{}
return notes, true
})
buffer := make([]float32, 8192)
for {
select {
case <-closer:
return
default:
t.sequencer.ReadAudio(buffer)
read, _ := t.sequencer.ReadAudio(buffer)
for read < len(buffer) {
buffer[read] = 0
read++
}
output.WriteAudio(buffer)
}
}
@ -448,7 +412,7 @@ func (t *Tracker) DeleteSelection() {
}
}
func New(audioContext sointu.AudioContext) *Tracker {
func New(audioContext sointu.AudioContext, synthService sointu.SynthService) *Tracker {
t := &Tracker{
Theme: material.NewTheme(gofont.Collection()),
QuitButton: new(widget.Clickable),
@ -495,6 +459,40 @@ func New(audioContext sointu.AudioContext) *Tracker {
for range allUnits {
t.ChooseUnitTypeBtns = append(t.ChooseUnitTypeBtns, new(widget.Clickable))
}
curVoices := make([]int, 32)
t.sequencer = NewSequencer(synthService, func() ([]Note, bool) {
t.playRowPatMutex.Lock()
if !t.Playing {
t.playRowPatMutex.Unlock()
return nil, false
}
t.PlayPosition.Row++
t.PlayPosition.Wrap(t.song)
if t.NoteTracking {
t.Cursor.SongRow = t.PlayPosition
t.SelectionCorner.SongRow = t.PlayPosition
}
notes := make([]Note, 0, 32)
for track := range t.song.Tracks {
patternIndex := t.song.Tracks[track].Sequence[t.PlayPosition.Pattern]
note := t.song.Tracks[track].Patterns[patternIndex][t.PlayPosition.Row]
if note == 1 { // anything but hold causes an action.
continue
}
first := t.song.FirstTrackVoice(track)
notes = append(notes, Note{first + curVoices[track], 0})
if note > 1 {
curVoices[track]++
if curVoices[track] >= t.song.Tracks[track].NumVoices {
curVoices[track] = 0
}
notes = append(notes, Note{first + curVoices[track], note})
}
}
t.playRowPatMutex.Unlock()
t.ticked <- struct{}{}
return notes, true
})
go t.sequencerLoop(t.closer)
if err := t.LoadSong(defaultSong.Copy()); err != nil {
panic(fmt.Errorf("cannot load default song: %w", err))