-
Notifications
You must be signed in to change notification settings - Fork 0
/
midi_coremidi.go
60 lines (54 loc) · 1.29 KB
/
midi_coremidi.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
// +build darwin coremidi
// +build !portmidi
package main
import (
"errors"
"fmt"
"github.com/youpy/go-coremidi"
)
var midiOut coremidi.OutputPort
var midiDestination coremidi.Destination
func sendMidiNote(channel, note, velocity int) {
if note != 0 {
packet := coremidi.NewPacket([]byte{byte(midiNoteOn | channel), byte(note), byte(velocity)})
_ = packet.Send(&midiOut, &midiDestination)
}
}
func initMidi(chosenPort int) (err error) {
allDests, err := coremidi.AllDestinations()
if len(allDests) == 0 {
return errors.New("no midi output found")
}
fmt.Println("midi outputs found:")
for i, d := range allDests {
fmt.Printf("%d: \"(%s), %s\"", i, d.Manufacturer(), d.Name())
if i == 0 {
fmt.Print(" ", labelPortDefault)
}
if i == chosenPort {
fmt.Print(" ", labelPortSelected)
}
fmt.Println()
}
if chosenPort != defaultMidiPort {
if chosenPort >= len(allDests) {
logger.Fatalf("selected midi port does not exist: %d\n", chosenPort)
}
midiDestination = allDests[chosenPort]
} else {
midiDestination = allDests[0]
}
client, err := coremidi.NewClient("droguedrums-client")
if err != nil {
fmt.Println(err)
return
}
midiOut, err = coremidi.NewOutputPort(client, "droguedrums-port")
if err != nil {
fmt.Println(err)
return
}
return
}
func closeMidi() {
}