Struct EntropyChannelDescriptor 

pub struct EntropyChannelDescriptor {
    pub coder: u8,
    pub coder_version: u16,
    pub scale_bits: u8,
    pub lane_count: u8,
    pub model_id: u32,
    pub symbol_count: u64,
    pub decoded_length: u64,
    pub initial_state: u32,
    pub payload: Vec<u8>,
}

A complete decoder-entry descriptor for one entropy channel.

Fields

coder: u8

Coder selector (must be CODER_ORDER0_BYTE_RANS).

coder_version: u16

Coder wire version (must be CODER_VERSION_1).

scale_bits: u8

Model scale bits; must match the referenced model.

lane_count: u8

Lane count (only single-lane channels are supported).

model_id: u32

Index into the descriptor’s entropy-model table.

symbol_count: u64

Number of symbols encoded.

decoded_length: u64

Exact decoded length in bytes.

initial_state: u32

Decoder initial state (scalar single lane).

payload: Vec<u8>

Renormalization payload in forward decoder-consumption order.

Implementations

impl EntropyChannelDescriptor

pub fn encode(&self) -> Result<Vec<u8>>

Canonical wire encoding (little-endian): [coder u8][coder_version u16][scale_bits u8][lane_count u8] [model_id u32][symbol_count u64][decoded_length u64] [initial_state u32][payload_len u32][payload].

pub fn header_bytes(&self) -> Result<Vec<u8>>

The fixed WIRE_HEADER_LEN-byte header alone, in the exact layout encode uses, without the renormalization payload.

The final payload_len field still reflects the payload length, so the header is a complete description of everything except the payload bytes. This is the “channel header” shareable unit (Phase 11.14): two channels whose only difference is their payload share one header.

pub fn decode(bytes: &[u8], limits: Limits) -> Result<EntropyChannelDescriptor>

Parse and validate a canonical channel descriptor; bytes must be exactly consumed (no trailing bytes, no truncation).

Trait Implementations

impl Clone for EntropyChannelDescriptor

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EntropyChannelDescriptor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for EntropyChannelDescriptor

impl PartialEq for EntropyChannelDescriptor

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for EntropyChannelDescriptor