51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
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package backend
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import (
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"github.com/tonychee7000/Arremi/consts"
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midi "github.com/youpy/go-coremidi"
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)
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// MIDIDevice implies a Writer interface.
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type MIDIDevice struct {
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client midi.Client
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source midi.Source
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Signal chan midi.Packet
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}
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// NewMIDIDevice construction func
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func NewMIDIDevice() (*MIDIDevice, error) {
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var mididev = new(MIDIDevice)
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err := mididev.Init()
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return mididev, err
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}
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// Init the client and source
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func (midiDev *MIDIDevice) Init() error {
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var err error
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midiDev.Signal = make(chan midi.Packet, 4096)
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midiDev.client, err = midi.NewClient(consts.ClientName)
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if err != nil {
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return err
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}
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midiDev.source, err = midi.NewSource(midiDev.client, consts.SourceName)
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return err
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}
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func (midiDev *MIDIDevice) Write(p []byte) (int, error) {
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var pack = midi.NewPacket(p, 0)
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midiDev.Signal <- pack
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err := pack.Received(&(midiDev.source))
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return len(p), err
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}
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// AllNoteOff I don't want panic!
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func (midiDev *MIDIDevice) AllNoteOff() {
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for i := 0; i < 16; i++ {
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for j := 0; j < 128; j++ {
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midiDev.Write([]byte{byte(0x90 + i), byte(j), 0})
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}
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}
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}
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