76 lines
1.5 KiB
Go
76 lines
1.5 KiB
Go
package main
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import (
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"github.com/charmbracelet/log"
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"gitlab.com/gomidi/midi/v2"
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"github.com/bendahl/uinput"
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)
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type ControllerList []*Controller
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func (cl ControllerList) Stop() {
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for _, controller := range cl {
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controller.Stop()
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}
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}
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type Controller struct {
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midiInput *MidiInput
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mappings []Mapping
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abortChan chan interface{}
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virtGamepad uinput.Gamepad
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}
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func NewController(portName string, vendorID, productID uint16) (*Controller, error) {
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if vendorID == 0 && productID == 0 {
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// if no IDs were defined, imitate XBox 360 controller
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vendorID = 0x45e
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productID = 0x285
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}
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midiInput, err := NewMidiInput(portName)
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if err != nil {
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return nil, err
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}
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virtGamepad, err := uinput.CreateGamepad("/dev/uinput", []byte(portName), vendorID, productID)
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if err != nil {
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return nil, err
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}
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abortChan := make(chan interface{})
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controller := &Controller{midiInput, nil, abortChan, virtGamepad}
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go func() {
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for {
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select {
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case midiMessage := <-midiInput.Messages:
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controller.update(midiMessage)
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case <-abortChan:
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return
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}
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}
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}()
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return controller, nil
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}
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func (c *Controller) AddMapping(mapping Mapping) {
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c.mappings = append(c.mappings, mapping)
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}
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func (c Controller) Stop() {
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c.midiInput.Stop()
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c.abortChan <- struct{}{}
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c.virtGamepad.Close()
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}
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func (c Controller) update(msg midi.Message) {
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for _, mapping := range c.mappings {
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err := mapping.TriggerIfMatch(msg, c.virtGamepad)
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if err != nil {
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log.Errorf("Error in Mapping \"%s\": %v", mapping.Comment(), err)
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}
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}
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}
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