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Merge pull request #15 from schollz/rtmidi
Rtmidi
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| package rtmidi | ||
|
|
||
| import ( | ||
| "time" | ||
|
|
||
| "github.com/schollz/miti/src/log" | ||
| driver "gitlab.com/gomidi/rtmididrv" | ||
| ) | ||
|
|
||
| type Event struct { | ||
| MIDI int | ||
| On bool | ||
| Instrument string | ||
| Timestamp time.Time | ||
| } | ||
|
|
||
| func ReadAll(finished chan bool) (events chan Event, err error) { | ||
| events = make(chan Event, 100) | ||
| if !inited { | ||
| drv, err = driver.New() | ||
| if err != nil { | ||
| return | ||
| } | ||
| inited = true | ||
| } | ||
|
|
||
| ins, err := drv.Ins() | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| for i := range ins { | ||
| err = ins[i].Open() | ||
| if err != nil { | ||
| log.Error(err) | ||
| continue | ||
| } | ||
| func(j int) { | ||
| name := ins[j].String() | ||
| log.Tracef("setting up %s", name) | ||
| ins[j].SetListener(func(data []byte, deltaMicroseconds int64) { | ||
| if len(data) == 3 { | ||
| log.Tracef("[%s] %+v", name, data) | ||
| events <- Event{int(data[1]), data[0] == 144, name, time.Now()} | ||
| } | ||
| }) | ||
| }(i) | ||
|
|
||
| } | ||
| go func() { | ||
| <-finished | ||
| for i := range ins { | ||
| log.Debugf("[%s] closing midi input", ins[i].String()) | ||
| ins[i].StopListening() | ||
| ins[i].Close() | ||
| } | ||
| }() | ||
|
|
||
| return | ||
| } |
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