Struct RansEncoder 

pub struct RansEncoder { /* private fields */ }

A symbol-at-a-time rANS encoder.

Feed symbols with put (in reverse message order – this is inherent to rANS), then call finish to obtain the byte stream.

The same byte stream is decodable by RansDecoder or decode.

Implementations

impl RansEncoder

pub fn new() -> Self

Create a new encoder with default buffer capacity.

pub fn with_capacity(cap: usize) -> Self

Create a new encoder with pre-allocated buffer capacity.

pub fn put(&mut self, sym: u32, table: &FrequencyTable) -> Result<(), AnsError>

Encode a single symbol into the rANS state.

Symbols must be fed in reverse message order. If the original message is [A, B, C], call put(C), put(B), put(A).

pub fn finish(self) -> Vec<u8>

Finalize the encoder, writing the final state and returning the byte stream.

The returned bytes can be decoded by RansDecoder::new or decode.

pub fn state(&self) -> u32

Current rANS state (for bits-back interleaving).

Trait Implementations

impl Clone for RansEncoder

fn clone(&self) -> RansEncoder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RansEncoder

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

Formats the value using the given formatter.

impl Default for RansEncoder

fn default() -> Self

Returns the “default value” for a type.