refactor(tracker): Rewrote the sequencer loop to use simple mutex

cmd/sointu-track/main.go

@@ -2,26 +2,27 @@ package main
 
 import (
 	"fmt"
+	"os"
+
 	"gioui.org/app"
 	"gioui.org/unit"
-	"github.com/vsariola/sointu/audio/oto"
+	"github.com/vsariola/sointu/oto"
 	"github.com/vsariola/sointu/tracker"
-	"os"
 )
 
 func main() {
-	plr, err := oto.NewPlayer()
+	audioContext, err := oto.NewContext()
 	if err != nil {
 		fmt.Println(err)
 		os.Exit(1)
 	}
-	defer plr.Close()
+	defer audioContext.Close()
 	go func() {
 		w := app.NewWindow(
 			app.Size(unit.Dp(800), unit.Dp(600)),
 			app.Title("Sointu Tracker"),
 		)
-		t := tracker.New(plr)
+		t := tracker.New(audioContext)
 		defer t.Close()
 		if err := t.Run(w); err != nil {
 			fmt.Println(err)