mirror of
https://github.com/jwetzell/artnet-go.git
synced 2026-08-04 14:57:46 +00:00
Joel Wetzell
77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
package artnet
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import (
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"encoding/binary"
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"errors"
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"slices"
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)
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type ArtTimeCode struct {
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ID [8]uint8
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OpCode uint16
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ProtVerHi uint8
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ProtVerLo uint8
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Filler1 uint8
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StreamId uint8
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Frames uint8
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Seconds uint8
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Minutes uint8
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Hours uint8
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Type uint8
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}
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func (atc *ArtTimeCode) GetOpCode() uint16 {
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return atc.OpCode
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}
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func (atc *ArtTimeCode) GetProtVer() uint16 {
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return uint16(atc.ProtVerHi)<<8 + uint16(atc.ProtVerLo)
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}
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func (atc *ArtTimeCode) GetID() [8]uint8 {
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return atc.ID
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}
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func (atc *ArtTimeCode) UnmarshalBinary(data []byte) error {
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if len(data) < 19 {
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return errors.New("ArtTimeCode packet must be at least 14 bytes long")
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}
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copy(atc.ID[:], data[0:8])
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if !slices.Equal(ArtNetID[:], atc.ID[:]) {
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return errors.New("ID does not match Art-Net ID")
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}
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atc.OpCode = binary.LittleEndian.Uint16(data[8:10])
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atc.ProtVerHi = data[10]
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atc.ProtVerLo = data[11]
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offset := 12
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atc.Filler1 = data[offset]
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atc.StreamId = data[offset+1]
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atc.Frames = data[offset+2]
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atc.Seconds = data[offset+3]
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atc.Minutes = data[offset+4]
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atc.Hours = data[offset+5]
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atc.Type = data[offset+6]
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return nil
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}
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func (atc *ArtTimeCode) MarshalBinary() ([]byte, error) {
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data := make([]byte, 8+11)
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copy(data[0:8], atc.ID[:])
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binary.LittleEndian.PutUint16(data[8:10], atc.OpCode)
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data[10] = atc.ProtVerHi
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data[11] = atc.ProtVerLo
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offset := 12
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data[offset] = atc.Filler1
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data[offset+1] = atc.StreamId
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data[offset+2] = atc.Frames
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data[offset+3] = atc.Seconds
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data[offset+4] = atc.Minutes
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data[offset+5] = atc.Hours
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data[offset+6] = atc.Type
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return data, nil
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}
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