Trait MessageCodec 

pub trait MessageCodec: Default + 'static {
    type Unpacked;

    const PAYLOAD_BITS: u32;
    const CRC_BITS: u32;

    // Required methods
    fn pack(&self, fields: &MessageFields) -> Option<Vec<u8>>;
    fn unpack(
        &self,
        payload: &[u8],
        ctx: &DecodeContext,
    ) -> Option<Self::Unpacked>;
}

Human-facing message payload codec (callsigns, grids, reports, free text).

Operates on the FEC-decoded information bits (PAYLOAD_BITS wide, NOT including any CRC protecting them — callers handle the CRC layer).

Unlike FecCodec, this trait is an acceptable place for dyn when the caller juggles heterogeneous protocols at runtime (FFI, CLI dump tools): message unpacking is a cold path relative to DSP/FEC inner loops.

Required Associated Constants

const PAYLOAD_BITS: u32

Number of information bits consumed by pack / produced by unpack.

const CRC_BITS: u32

CRC width guarding the payload during transmission (0 if the FEC itself provides all error detection, as with JT65 Reed–Solomon).

Required Associated Types

type Unpacked

Decoded high-level representation returned by unpack.

Required Methods

fn pack(&self, fields: &MessageFields) -> Option<Vec<u8>>

Encode high-level fields to a bit vector of length PAYLOAD_BITS. Returns None on encoding failure (invalid callsign format, overflow…).

fn unpack(&self, payload: &[u8], ctx: &DecodeContext) -> Option<Self::Unpacked>

Decode a PAYLOAD_BITS-long bit vector to the protocol-specific unpacked representation. ctx carries side information such as the callsign-hash table.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl MessageCodec for Jt72Message_

const PAYLOAD_BITS: u32 = 72

const CRC_BITS: u32 = 0

type Unpacked = Jt72Message

impl MessageCodec for Q65Message

const PAYLOAD_BITS: u32 = 77

const CRC_BITS: u32 = 12

type Unpacked = String

impl MessageCodec for Wsjt77Message

const PAYLOAD_BITS: u32 = 77

const CRC_BITS: u32 = 14

type Unpacked = String

impl MessageCodec for Wspr50Message

const PAYLOAD_BITS: u32 = 50

const CRC_BITS: u32 = 0

type Unpacked = WsprMessage