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refactor(tracker): use strings to identify MIDI ports

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This commit is contained in:
5684185+vsariola@users.noreply.github.com
2026-01-23 23:48:16 +02:00
parent 651ceb3cbb
commit 173648fbdb
5 changed files with 72 additions and 63 deletions
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73
tracker/gomidi/midi.go
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@ -9,7 +9,6 @@ import "C"
import (
"errors"
"fmt"
"strings"
"github.com/vsariola/sointu/tracker"
"gitlab.com/gomidi/midi/v2"
@ -23,14 +22,9 @@ type (
currentIn drivers.In
broker *tracker.Broker
}
RTMIDIDevice struct {
context *RTMIDIContext
in drivers.In
}
)
func (m *RTMIDIContext) InputDevices(yield func(tracker.MIDIDevice) bool) {
func (m *RTMIDIContext) InputDevices(yield func(string) bool) {
if m.driver == nil {
return
}
@ -38,9 +32,8 @@ func (m *RTMIDIContext) InputDevices(yield func(tracker.MIDIDevice) bool) {
if err != nil {
return
}
for i := 0; i < len(ins); i++ {
device := RTMIDIDevice{context: m, in: ins[i]}
if !yield(device) {
for _, in := range ins {
if !yield(in.String()) {
break
}
}
@ -56,34 +49,43 @@ func NewContext(broker *tracker.Broker) *RTMIDIContext {
}
// Open an input device while closing the currently open if necessary.
func (m RTMIDIDevice) Open() error {
if m.context.currentIn == m.in {
func (m *RTMIDIContext) Open(name string) error {
if m.currentIn != nil && m.currentIn.String() == name {
return nil
}
if m.context.driver == nil {
if m.driver == nil {
return errors.New("no driver available")
}
if m.context.HasDeviceOpen() {
m.context.currentIn.Close()
if m.IsOpen() {
m.currentIn.Close()
}
m.context.currentIn = m.in
err := m.in.Open()
m.currentIn = nil
ins, err := m.driver.Ins()
if err != nil {
m.context.currentIn = nil
return fmt.Errorf("opening MIDI input failed: %W", err)
return fmt.Errorf("retrieving MIDI inputs failed: %w", err)
}
_, err = midi.ListenTo(m.in, m.context.HandleMessage)
for _, in := range ins {
if in.String() == name {
m.currentIn = in
}
}
if m.currentIn == nil {
return fmt.Errorf("MIDI input device not found: %s", name)
}
err = m.currentIn.Open()
if err != nil {
m.in.Close()
m.context.currentIn = nil
m.currentIn = nil
return fmt.Errorf("opening MIDI input failed: %w", err)
}
_, err = midi.ListenTo(m.currentIn, m.HandleMessage)
if err != nil {
m.currentIn.Close()
m.currentIn = nil
return fmt.Errorf("listening to MIDI input failed: %w", err)
}
return nil
}
func (d RTMIDIDevice) String() string {
return d.in.String()
}
func (m *RTMIDIContext) HandleMessage(msg midi.Message, timestampms int32) {
var channel, key, velocity uint8
if msg.GetNoteOn(&channel, &key, &velocity) {
@ -109,23 +111,6 @@ func (c *RTMIDIContext) Close() {
c.driver.Close()
}
func (c *RTMIDIContext) HasDeviceOpen() bool {
func (c *RTMIDIContext) IsOpen() bool {
return c.currentIn != nil && c.currentIn.IsOpen()
}
func (c *RTMIDIContext) TryToOpenBy(namePrefix string, takeFirst bool) {
if namePrefix == "" && !takeFirst {
return
}
for input := range c.InputDevices {
if takeFirst || strings.HasPrefix(input.String(), namePrefix) {
input.Open()
return
}
}
if takeFirst {
fmt.Errorf("Could not find any MIDI Input.\n")
} else {
fmt.Errorf("Could not find any default MIDI Input starting with \"%s\".\n", namePrefix)
}
}