91 lines
1.9 KiB
Go
91 lines
1.9 KiB
Go
package xtouch
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import (
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"fmt"
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"gitlab.com/gomidi/midi/v2"
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"gitlab.com/gomidi/midi/v2/drivers"
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)
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type LCDColor uint8
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const (
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ColorBlack LCDColor = 0
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ColorRed LCDColor = 1
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ColorGreen LCDColor = 2
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ColorYellow LCDColor = 3
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ColorBlue LCDColor = 4
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ColorMagenta LCDColor = 5
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ColorCyan LCDColor = 6
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ColorWhite LCDColor = 7
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)
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type LEDState uint8
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const (
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LEDOff LEDState = 0
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LEDFlash LEDState = 64
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LEDOn LEDState = 127
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)
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type Output struct {
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send func(msg midi.Message) error
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DeviceID uint8
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}
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func NewOutput(port drivers.Out, deviceID uint8) (*Output, error) {
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send, err := midi.SendTo(port)
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if err != nil {
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return nil, fmt.Errorf("open output port: %w", err)
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}
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return &Output{send: send, DeviceID: deviceID}, nil
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}
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func (o *Output) SetFader(fader uint8, value uint8) error {
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cc := CCFaderFirst + fader
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if fader == 8 {
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cc = CCFaderMain
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}
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return o.send(midi.ControlChange(0, cc, value))
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}
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func (o *Output) SetButtonLED(button uint8, state LEDState) error {
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return o.send(midi.NoteOn(0, button, uint8(state)))
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}
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func (o *Output) SetEncoderRing(encoder uint8, value uint8) error {
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return o.send(midi.ControlChange(0, CCEncoderFirst+encoder, value))
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}
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func (o *Output) SetMeter(channel uint8, value uint8) error {
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return o.send(midi.ControlChange(0, CCMeterFirst+channel, value))
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}
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func (o *Output) SetLCD(lcd uint8, color LCDColor, invertUpper bool, invertLower bool, upper string, lower string) error {
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cc := uint8(color)
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if invertUpper {
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cc |= 0x10
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}
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if invertLower {
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cc |= 0x20
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}
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upper = padOrTruncate(upper, 7)
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lower = padOrTruncate(lower, 7)
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data := []byte{0x00, 0x20, 0x32, o.DeviceID, 0x4C, lcd, cc}
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data = append(data, []byte(upper)...)
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data = append(data, []byte(lower)...)
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return o.send(midi.SysEx(data))
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}
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func padOrTruncate(s string, n int) string {
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if len(s) > n {
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return s[:n]
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}
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for len(s) < n {
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s += " "
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}
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return s
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}
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