func listDevices() {
n := portmidi.CountDevices()
for i := 0; i < n; i++ {
info := portmidi.GetDeviceInfo(portmidi.DeviceId(i))
fmt.Printf("Device %d: %v\n", i, info)
}
}
func newDevices() (devs devices) {
portmidi.Initialize()
devs = devices{
info: map[portmidi.DeviceId]*portmidi.DeviceInfo{},
}
for id := 0; id < portmidi.CountDevices(); id++ {
devID := deviceID(id)
devs.info[devID] = portmidi.GetDeviceInfo(devID)
}
return
}
func getDeviceId() (portmidi.DeviceId, error) {
total := portmidi.CountDevices()
for id := 0; id < total; id++ {
id := portmidi.DeviceId(id)
info := portmidi.GetDeviceInfo(id)
if info.Name == "MicroBrute" && info.IsOutputAvailable {
return id, nil
}
}
return -1, fmt.Errorf("MicroBrute not found")
}
func findMidiInputDevice(name string) portmidi.DeviceId {
devcount := portmidi.CountDevices()
for i := 0; i < devcount; i++ {
id := portmidi.DeviceId(i)
info := portmidi.GetDeviceInfo(id)
if info.IsInputAvailable {
if info.Name == name {
return id
}
}
}
return portmidi.DeviceId(-1)
}
func findMidiOutputDevice(name string) (portmidi.DeviceId, string) {
devcount := portmidi.CountDevices()
for i := 0; i < devcount; i++ {
id := portmidi.DeviceId(i)
info := portmidi.GetDeviceInfo(id)
if info.IsOutputAvailable {
if info.Name == name {
return id, info.Name
}
}
}
id := portmidi.GetDefaultOutputDeviceId()
info := portmidi.GetDeviceInfo(id)
return id, info.Name
}
// discovers the currently connected Launchpad device
// as a MIDI device.
func discover() (input portmidi.DeviceID, output portmidi.DeviceID, err error) {
in := -1
out := -1
for i := 0; i < portmidi.CountDevices(); i++ {
info := portmidi.Info(portmidi.DeviceID(i))
if strings.Contains(info.Name, "Launchpad") {
if info.IsInputAvailable {
in = i
}
if info.IsOutputAvailable {
out = i
}
}
}
if in == -1 || out == -1 {
err = errors.New("launchpad: no launchpad is connected")
} else {
input = portmidi.DeviceID(in)
output = portmidi.DeviceID(out)
}
return
}
func initPortMidi() *portmidi.Stream {
portmidi.Initialize()
deviceCount := portmidi.CountDevices()
fmt.Println("Number of MIDI devices: ", deviceCount)
dev := portmidi.DeviceId(3 - 1)
for i := 0; i < deviceCount; i++ {
id := portmidi.DeviceId(i)
fmt.Println("Index ", i, "Id", id, " Device ", *portmidi.GetDeviceInfo(id))
}
out, err := portmidi.NewOutputStream(dev, 0, 0)
if err == nil {
fmt.Println("used device info: ", *portmidi.GetDeviceInfo(dev))
} else {
fmt.Println("Error: ", err)
os.Exit(2)
}
return out
}