/
main.go
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/
main.go
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/*
melanzani - converts USB input of guitar devices to MIDI signals
Copyright (C) 2015 Christoph Kober
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package main
import (
"fmt"
"github.com/rakyll/portmidi"
"os"
)
func main() {
args := os.Args[1:]
settings := parseCommandLine(args)
midi := MidiOutput{initPortMidi()}
guitar := SimpleGuitar{}
guitar.midi = &midi
guitar.Reset()
device := initDevice(&guitar, &midi, settings)
device.StartListening()
shutDownPortMidi()
}
func initDevice(instrument Instrument, midi *MidiOutput, settings Settings) Device {
var device Device
if settings.deviceType == DEVICE_GUITAR {
device = CreateGuitarDevice(settings.deviceName, instrument)
} else {
fmt.Println("Error: Keyboard input not supported yet.")
os.Exit(12)
}
return device
}
func initPortMidi() *portmidi.Stream {
portmidi.Initialize()
deviceCount := portmidi.CountDevices()
fmt.Println("Number of MIDI devices: ", deviceCount)
dev := portmidi.DeviceId(3 - 1)
for i := 0; i < deviceCount; i++ {
id := portmidi.DeviceId(i)
fmt.Println("Index ", i, "Id", id, " Device ", *portmidi.GetDeviceInfo(id))
}
out, err := portmidi.NewOutputStream(dev, 0, 0)
if err == nil {
fmt.Println("used device info: ", *portmidi.GetDeviceInfo(dev))
} else {
fmt.Println("Error: ", err)
os.Exit(2)
}
return out
}
func shutDownPortMidi() {
portmidi.Terminate()
}