melrōse musical expression player

package midi import ( "time" "github.com/emicklei/melrose/core" "github.com/emicklei/melrose/notify" ) // Schedule exists for Loop func (r *DeviceRegistry) Schedule(e core.TimelineEvent, beginAt time.Time) { // TODO check DeviceSelector device, err := r.Output(r.defaultOutputID) if err != nil { return } device.timeline.Schedule(e, beginAt) } // Play schedules all the notes on the timeline beginning at a give time (now or in the future). // Returns the end time of the last played Note. func (r *DeviceRegistry) Play(condition core.Condition, seq core.Sequenceable, bpm float64, beginAt time.Time) time.Time { if notify.IsDebug() { notify.Debugf("midi.play: time=%s object=%s", beginAt.Format("04:05.000"), core.Storex(seq)) } // unwrap if variable because we need to detect device or channel selector seq = core.UnValue(seq) // which device? var device *OutputDevice deviceID := r.defaultOutputID if dev, ok := seq.(core.DeviceSelector); ok { deviceID = dev.DeviceID() //seq = dev.Unwrap() } device, err := r.Output(deviceID) if err != nil { return beginAt } return device.Play(condition, seq, bpm, beginAt) }