mirror of
https://github.com/jwetzell/showbridge-go.git
synced 2026-04-27 05:15:47 +00:00
106 lines
2.1 KiB
Go
106 lines
2.1 KiB
Go
//go:build cgo
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package module
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import (
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"context"
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"errors"
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"fmt"
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"log/slog"
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"github.com/jwetzell/showbridge-go/internal/config"
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"github.com/jwetzell/showbridge-go/internal/route"
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"gitlab.com/gomidi/midi/v2"
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_ "gitlab.com/gomidi/midi/v2/drivers/rtmididrv"
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)
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type MIDIOutput struct {
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config config.ModuleConfig
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ctx context.Context
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router route.RouteIO
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Port string
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SendFunc func(midi.Message) error
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logger *slog.Logger
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cancel context.CancelFunc
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}
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func init() {
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RegisterModule(ModuleRegistration{
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Type: "midi.output",
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New: func(config config.ModuleConfig) (Module, error) {
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params := config.Params
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port, ok := params["port"]
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if !ok {
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return nil, errors.New("midi.output requires a port parameter")
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}
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portString, ok := port.(string)
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if !ok {
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return nil, errors.New("midi.output port must be a string")
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}
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return &MIDIOutput{config: config, Port: portString, logger: CreateLogger(config)}, nil
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},
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})
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}
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func (mo *MIDIOutput) Id() string {
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return mo.config.Id
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}
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func (mo *MIDIOutput) Type() string {
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return mo.config.Type
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}
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func (mo *MIDIOutput) Run(ctx context.Context) error {
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mo.logger.Debug("running")
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defer midi.CloseDriver()
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router, ok := ctx.Value(route.RouterContextKey).(route.RouteIO)
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if !ok {
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return errors.New("midi.output unable to get router from context")
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}
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mo.router = router
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moduleContext, cancel := context.WithCancel(ctx)
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mo.ctx = moduleContext
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mo.cancel = cancel
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out, err := midi.FindOutPort(mo.Port)
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if err != nil {
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return fmt.Errorf("midi.output can't find output port: %s", mo.Port)
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}
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send, err := midi.SendTo(out)
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if err != nil {
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return err
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}
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mo.SendFunc = send
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<-mo.ctx.Done()
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mo.logger.Debug("done")
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return nil
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}
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func (mo *MIDIOutput) Output(ctx context.Context, payload any) error {
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if mo.SendFunc == nil {
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return errors.New("midi.output output is not setup")
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}
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payloadMessage, ok := payload.(midi.Message)
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if !ok {
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return errors.New("midi.output can only ouptut midi.Message")
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}
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return mo.SendFunc(payloadMessage)
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}
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func (mo *MIDIOutput) Stop() {
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mo.cancel()
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}
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