some untested implementations for moore artnet packet types

trigger.go

@@ -0,0 +1,77 @@
+package artnet
+
+import (
+	"encoding/binary"
+	"errors"
+	"slices"
+)
+
+type ArtTrigger struct {
+	ID        [8]uint8
+	OpCode    uint16
+	ProtVerHi uint8
+	ProtVerLo uint8
+	filler1   uint8
+	filler2   uint8
+	OemHi     uint8
+	OemLo     uint8
+	Key       uint8
+	SubKey    uint8
+	Data      []uint8
+}
+
+func (ap *ArtTrigger) GetOpCode() uint16 {
+	return ap.OpCode
+}
+
+func (ap *ArtTrigger) GetProtVer() uint16 {
+	return uint16(ap.ProtVerHi)<<8 + uint16(ap.ProtVerLo)
+}
+
+func (ap *ArtTrigger) GetID() [8]uint8 {
+	return ap.ID
+}
+
+func (ap *ArtTrigger) UnmarshalBinary(data []byte) error {
+
+	if len(data) < 18 {
+		return errors.New("ArtTrigger packet must be at least 18 bytes long")
+	}
+
+	copy(ap.ID[:], data[0:8])
+
+	if !slices.Equal(ArtNetID[:], ap.ID[:]) {
+		return errors.New("ID does not match Art-Net ID")
+	}
+
+	ap.OpCode = binary.LittleEndian.Uint16(data[8:10])
+	ap.ProtVerHi = data[10]
+	ap.ProtVerLo = data[11]
+
+	offset := 12
+	ap.filler1 = data[offset]
+	ap.filler2 = data[offset+1]
+	ap.OemHi = data[offset+2]
+	ap.OemLo = data[offset+3]
+	ap.Key = data[offset+4]
+	ap.SubKey = data[offset+5]
+	ap.Data = make([]uint8, len(data[offset+6:]))
+	copy(ap.Data, data[offset+6:])
+	return nil
+}
+
+func (ap *ArtTrigger) MarshalBinary() ([]byte, error) {
+	data := make([]byte, 8+10)
+	copy(data[0:8], ap.ID[:])
+	binary.LittleEndian.PutUint16(data[8:10], ap.OpCode)
+	data[10] = ap.ProtVerHi
+	data[11] = ap.ProtVerLo
+	data[12] = ap.filler1
+	data[13] = ap.filler2
+	data[14] = ap.OemHi
+	data[15] = ap.OemLo
+	data[16] = ap.Key
+	data[17] = ap.SubKey
+	data = append(data, ap.Data...)
+	return data, nil
+}