Struct Rans64Decoder 

pub struct Rans64Decoder<'a> { /* private fields */ }

A symbol-at-a-time 64-bit rANS decoder.

Constructed from a byte stream produced by Rans64Encoder::finish or encode64. Decode symbols with get, or use the bits-back primitives peek + advance.

Implementations

impl<'a> Rans64Decoder<'a>

pub fn new(bytes: &'a [u8]) -> Result<Self, AnsError>

Initialize a 64-bit decoder from an encoded byte stream.

Returns an error if the stream is too short (< 8 bytes) or the initial state is below RANS64_L.

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

Decode a single symbol from the 64-bit rANS state.

pub fn peek(&self, table: &FrequencyTable) -> u32

Peek at the next symbol without advancing the state.

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

Advance the decoder state after a peek.

pub fn state(&self) -> u64

Current rANS state (for bits-back interleaving).

pub fn remaining_bytes(&self) -> usize

Number of unread bytes remaining in the buffer.

Trait Implementations

impl<'a> Debug for Rans64Decoder<'a>

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

Formats the value using the given formatter.