encode_voice_header

dstar_gateway_core::codec::dextra::encode

Function encode_voice_header 

Source 
pub fn encode_voice_header(
    out: &mut [u8],
    stream_id: StreamId,
    header: &DStarHeader,
) -> Result<usize, EncodeError>
Expand description

Encode a 56-byte voice header.

Layout per ircDDBGateway/Common/HeaderData.cpp:590-635 (getDExtraData):

  • [0..4]: b"DSVT" (NOT preceded by a length prefix — unlike DPlus)
  • [4]: 0x10 (header indicator)
  • [5..8]: 0x00 (reserved)
  • [8]: 0x20 (config)
  • [9..12]: 0x00 0x01 0x02 (band1/band2/band3)
  • [12..14]: stream_id little-endian
  • [14]: 0x80 (header indicator)
  • [15..56]: DStarHeader::encode_for_dsvt (41 bytes: 3 zero flag bytes + RPT2 + RPT1 + YOUR + MY + MY_SUFFIX + CRC)

§Errors

Returns EncodeError::BufferTooSmall if out.len() < 56.

§See also

ircDDBGateway/Common/HeaderData.cpp:590-635 (getDExtraData) for the reference encoder. The 41-byte trailer is shared with encode_voice_data below.