118 lines
2.3 KiB
Go
118 lines
2.3 KiB
Go
package main
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import (
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"fmt"
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"os"
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"os/signal"
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"syscall"
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"gitlab.com/gomidi/midi/v2"
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_ "gitlab.com/gomidi/midi/v2/drivers/rtmididrv"
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"qrun/xtouch"
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)
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var lcdColors = []xtouch.LCDColor{
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xtouch.ColorRed,
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xtouch.ColorGreen,
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xtouch.ColorYellow,
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xtouch.ColorBlue,
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xtouch.ColorMagenta,
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xtouch.ColorCyan,
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xtouch.ColorWhite,
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}
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var (
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faderValues [9]uint8
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encoderValues [8]int
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)
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func updateLCD(out *xtouch.Output, ch uint8) {
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color := lcdColors[encoderValues[ch]*len(lcdColors)/128]
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out.SetLCD(ch, color, false, false,
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fmt.Sprintf("E%-3d F%-3d", encoderValues[ch], faderValues[ch]),
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fmt.Sprintf("Chan %d", ch+1))
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}
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func clamp(v, lo, hi int) int {
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if v < lo {
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return lo
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}
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if v > hi {
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return hi
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}
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return v
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}
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func main() {
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defer midi.CloseDriver()
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inPort, err := xtouch.FindInPort("x-touch")
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if err != nil {
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fmt.Println("Available MIDI input ports:")
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for _, p := range midi.GetInPorts() {
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fmt.Printf(" %s\n", p)
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}
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fmt.Fprintf(os.Stderr, "\nError: %v\n", err)
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os.Exit(1)
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}
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outPort, err := xtouch.FindOutPort("x-touch")
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error: %v\n", err)
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os.Exit(1)
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}
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out, err := xtouch.NewOutput(outPort, xtouch.DeviceIDExtender)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error: %v\n", err)
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os.Exit(1)
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}
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for i := uint8(0); i < 8; i++ {
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updateLCD(out, i)
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}
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dec := &xtouch.Decoder{EncoderMode: xtouch.EncoderRelative}
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fmt.Printf("Listening on: %s\n", inPort)
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stop, err := midi.ListenTo(inPort, func(msg midi.Message, timestampms int32) {
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event := dec.Decode(msg)
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if event == nil {
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return
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}
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fmt.Println(event)
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switch e := event.(type) {
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case xtouch.FaderEvent:
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if e.Fader > 7 {
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return
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}
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faderValues[e.Fader] = e.Value
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pair := e.Fader ^ 1
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faderValues[pair] = e.Value
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out.SetFader(pair, e.Value)
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out.SetMeter(e.Fader, e.Value)
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out.SetMeter(pair, e.Value)
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updateLCD(out, e.Fader)
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updateLCD(out, pair)
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case xtouch.EncoderRelativeEvent:
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encoderValues[e.Encoder] = clamp(encoderValues[e.Encoder]+e.Delta, 0, 127)
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out.SetEncoderRing(e.Encoder, uint8(encoderValues[e.Encoder]))
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updateLCD(out, e.Encoder)
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}
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})
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error listening: %v\n", err)
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os.Exit(1)
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}
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defer stop()
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sig := make(chan os.Signal, 1)
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signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM)
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<-sig
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fmt.Println()
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}
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