Move xtouchtest to cmd/xtouchtest

cmd/xtouchtest/main.go

@@ -0,0 +1,117 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"gitlab.com/gomidi/midi/v2"
+	_ "gitlab.com/gomidi/midi/v2/drivers/rtmididrv"
+
+	"qrun/xtouch"
+)
+
+var lcdColors = []xtouch.LCDColor{
+	xtouch.ColorRed,
+	xtouch.ColorGreen,
+	xtouch.ColorYellow,
+	xtouch.ColorBlue,
+	xtouch.ColorMagenta,
+	xtouch.ColorCyan,
+	xtouch.ColorWhite,
+}
+
+var (
+	faderValues   [9]uint8
+	encoderValues [8]int
+)
+
+func updateLCD(out *xtouch.Output, ch uint8) {
+	color := lcdColors[encoderValues[ch]*len(lcdColors)/128]
+	out.SetLCD(ch, color, false, false,
+		fmt.Sprintf("E%-3d F%-3d", encoderValues[ch], faderValues[ch]),
+		fmt.Sprintf("Chan %d", ch+1))
+}
+
+func clamp(v, lo, hi int) int {
+	if v < lo {
+		return lo
+	}
+	if v > hi {
+		return hi
+	}
+	return v
+}
+
+func main() {
+	defer midi.CloseDriver()
+
+	inPort, err := xtouch.FindInPort("x-touch")
+	if err != nil {
+		fmt.Println("Available MIDI input ports:")
+		for _, p := range midi.GetInPorts() {
+			fmt.Printf("  %s\n", p)
+		}
+		fmt.Fprintf(os.Stderr, "\nError: %v\n", err)
+		os.Exit(1)
+	}
+
+	outPort, err := xtouch.FindOutPort("x-touch")
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+		os.Exit(1)
+	}
+
+	out, err := xtouch.NewOutput(outPort, xtouch.DeviceIDExtender)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+		os.Exit(1)
+	}
+
+	for i := uint8(0); i < 8; i++ {
+		updateLCD(out, i)
+	}
+
+	dec := &xtouch.Decoder{EncoderMode: xtouch.EncoderRelative}
+
+	fmt.Printf("Listening on: %s\n", inPort)
+
+	stop, err := midi.ListenTo(inPort, func(msg midi.Message, timestampms int32) {
+		event := dec.Decode(msg)
+		if event == nil {
+			return
+		}
+		fmt.Println(event)
+
+		switch e := event.(type) {
+		case xtouch.FaderEvent:
+			if e.Fader > 7 {
+				return
+			}
+			faderValues[e.Fader] = e.Value
+			pair := e.Fader ^ 1
+			faderValues[pair] = e.Value
+			out.SetFader(pair, e.Value)
+			out.SetMeter(e.Fader, e.Value)
+			out.SetMeter(pair, e.Value)
+			updateLCD(out, e.Fader)
+			updateLCD(out, pair)
+
+		case xtouch.EncoderRelativeEvent:
+			encoderValues[e.Encoder] = clamp(encoderValues[e.Encoder]+e.Delta, 0, 127)
+			out.SetEncoderRing(e.Encoder, uint8(encoderValues[e.Encoder]))
+			updateLCD(out, e.Encoder)
+		}
+	})
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error listening: %v\n", err)
+		os.Exit(1)
+	}
+	defer stop()
+
+	sig := make(chan os.Signal, 1)
+	signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM)
+	<-sig
+	fmt.Println()
+}