Initial Commit

music.go

@@ -0,0 +1,81 @@
+package infinitime
+
+import "github.com/muka/go-bluetooth/bluez/profile/gatt"
+
+type MusicEvent uint8
+
+const (
+	MusicEventChar  = "00000001-78fc-48fe-8e23-433b3a1942d0"
+	MusicStatusChar = "00000002-78fc-48fe-8e23-433b3a1942d0"
+	MusicArtistChar = "00000003-78fc-48fe-8e23-433b3a1942d0"
+	MusicTrackChar  = "00000004-78fc-48fe-8e23-433b3a1942d0"
+	MusicAlbumChar  = "00000005-78fc-48fe-8e23-433b3a1942d0"
+)
+
+const (
+	MusicEventOpen    MusicEvent = 0xe0
+	MusicEventPlay    MusicEvent = 0x00
+	MusicEventPause   MusicEvent = 0x01
+	MusicEventNext    MusicEvent = 0x03
+	MusicEventPrev    MusicEvent = 0x04
+	MusicEventVolUp   MusicEvent = 0x05
+	MusicEventVolDown MusicEvent = 0x06
+)
+
+// MusicCtrl stores everything required to control music
+type MusicCtrl struct {
+	eventChar  *gatt.GattCharacteristic1
+	statusChar *gatt.GattCharacteristic1
+	artistChar *gatt.GattCharacteristic1
+	trackChar  *gatt.GattCharacteristic1
+	albumChar  *gatt.GattCharacteristic1
+}
+
+// SetStatus sets the playing status
+func (mc MusicCtrl) SetStatus(playing bool) error {
+	if playing {
+		return mc.statusChar.WriteValue([]byte{0x1}, nil)
+	}
+	return mc.statusChar.WriteValue([]byte{0x0}, nil)
+}
+
+// SetArtist sets the artist on InfniTime
+func (mc MusicCtrl) SetArtist(artist string) error {
+	return mc.artistChar.WriteValue([]byte(artist), nil)
+}
+
+// SetTrack sets the track name on InfniTime
+func (mc MusicCtrl) SetTrack(track string) error {
+	return mc.trackChar.WriteValue([]byte(track), nil)
+}
+
+// SetAlbum sets the album on InfniTime
+func (mc MusicCtrl) SetAlbum(album string) error {
+	return mc.albumChar.WriteValue([]byte(album), nil)
+}
+
+// WatchEvents watches music events from InfiniTime
+func (mc MusicCtrl) WatchEvents() (<-chan MusicEvent, error) {
+	// Start notifications on music event characteristic
+	err := mc.eventChar.StartNotify()
+	if err != nil {
+		return nil, err
+	}
+	// Watch music event properties
+	ch, err := mc.eventChar.WatchProperties()
+	if err != nil {
+		return nil, err
+	}
+	musicEventCh := make(chan MusicEvent, 5)
+	go func() {
+		// For every event
+		for event := range ch {
+			// If value changes
+			if event.Name == "Value" {
+				// Send music event to channel
+				musicEventCh <- MusicEvent(event.Value.([]byte)[0])
+			}
+		}
+	}()
+	return musicEventCh, nil
+}