midi

var MidiCmd = &cobra.Command{
	Use:   "midi",
	Short: "A brief description of your command",
	Long:  ``,
}

var MidiDeviceCmd = &cobra.Command{
	Use:   "devices",
	Short: "Prints info about all devices",
	Long:  ``,
	Run: func(cmd *cobra.Command, args []string) {
		if err := portmidi.Initialize(); err != nil {
			fmt.Println(err)
			os.Exit(1)
		}
		defer func() {
			if err := portmidi.Terminate(); err != nil {
				log.Fatal(err)
			}
		}()

		num := portmidi.CountDevices()
		fmt.Printf("Found %d devices. \n", num)
		if num == 0 {
			return
		}

		for i := 0; i < num; i++ {
			info := portmidi.Info(portmidi.DeviceID(i))
			if info == nil {
				fmt.Println("Unable to read default output devices")
				os.Exit(1)
			}
			printDevice(portmidi.DeviceID(i), info)
		}

		fmt.Println("Default device: ")
		deviceID := portmidi.DefaultOutputDeviceID()
		info := portmidi.Info(deviceID)
		if info == nil {
			fmt.Println("Unable to read default output devices")
			os.Exit(1)
		}
		printDevice(deviceID, info)
	},
}

var MidiDumpCmd = &cobra.Command{
	Use:   "dump",
	Short: "Dump incoming midi commands",
	Long:  ``,
	Run: func(cmd *cobra.Command, args []string) {
		if err := portmidi.Initialize(); err != nil {
			fmt.Println(err)
			os.Exit(1)
		}
		defer func() {
			if err := portmidi.Terminate(); err != nil {
				log.Fatal(err)
			}
		}()

		var d portmidi.DeviceID
		if deviceID == "" {
			d = portmidi.DefaultOutputDeviceID()
		} else {
			i, err := strconv.Atoi(deviceID)
			if err != nil {
				fmt.Printf("Failed to transform deviceID %q to int: %v\n", deviceID, err)
			}
			d = portmidi.DeviceID(i)
		}

		i := portmidi.Info(d)
		if i == nil {
			fmt.Printf("Unable to find input interface %d \n", d)
			os.Exit(1)
		}

		fmt.Printf("Using midi device %d \n", d)

		in, err := portmidi.NewInputStream(d, 1024)
		if err != nil {
			fmt.Println(err)
			os.Exit(1)
		}

		fmt.Printf("Starting dump for midi interface %d ... \n", d)

		events := in.Listen()
		for event := range events {
			fmt.Printf("%x\t%d\t%d\n", event.Status, event.Data1, event.Data2)
		}
	},
}