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feat(tracker): compile with midi support only when CGO is available

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Also add the midi context to the VSTI, so VSTI can use MIDI if they
wish so.
This commit is contained in:
5684185+vsariola@users.noreply.github.com
2025-06-20 19:38:06 +03:00
parent 3881b8eb22
commit 602b3b05cc
7 changed files with 42 additions and 21 deletions
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8
tracker/model.go
View File

@ -117,8 +117,11 @@ type (
InputDevices(yield func(MIDIDevice) bool)
Close()
HasDeviceOpen() bool
TryToOpenBy(name string, first bool)
}
NullMIDIContext struct{}
MIDIDevice interface {
String() string
Open() error
@ -385,6 +388,11 @@ func (d *modelData) Copy() modelData {
return ret
}
func (m NullMIDIContext) InputDevices(yield func(MIDIDevice) bool) {}
func (m NullMIDIContext) Close() {}
func (m NullMIDIContext) HasDeviceOpen() bool { return false }
func (m NullMIDIContext) TryToOpenBy(name string, first bool) {}
func (m *Model) resetSong() {
m.d.Song = defaultSong.Copy()
for _, instr := range m.d.Song.Patch {

10
tracker/model_test.go
View File

@ -13,18 +13,10 @@ import (
type NullContext struct{}
func (NullContext) FinishBlock(frame int) {}
func (NullContext) BPM() (bpm float64, ok bool) {
return 0, false
}
func (NullContext) InputDevices(yield func(tracker.MIDIDevice) bool) {}
func (NullContext) HasDeviceOpen() bool { return false }
func (NullContext) Close() {}
type modelFuzzState struct {
model *tracker.Model
clipboard []byte
@ -261,7 +253,7 @@ func FuzzModel(f *testing.F) {
reader := bytes.NewReader(slice)
synther := vm.GoSynther{}
broker := tracker.NewBroker()
model := tracker.NewModel(broker, synther, NullContext{}, "")
model := tracker.NewModel(broker, synther, tracker.NullMIDIContext{}, "")
player := tracker.NewPlayer(broker, synther)
buf := make([][2]float32, 2048)
closeChan := make(chan struct{})

6
tracker/player.go
View File

@ -51,6 +51,8 @@ type (
BPM() (bpm float64, ok bool)
}
NullPlayerProcessContext struct{}
// NoteEvent describes triggering or releasing of a note. The timestamps are
// in frames, and relative to the clock of the event source. Different
// sources can use different clocks. Player tries to adjust the timestamps
@ -200,6 +202,10 @@ func (p *Player) advanceRow() {
p.send(nil) // just send volume and song row information
}
func (p NullPlayerProcessContext) BPM() (bpm float64, ok bool) {
return 0, false // no BPM available
}
func (p *Player) processMessages(context PlayerProcessContext) {
loop:
for { // process new message