Struct InterleavedTansEncoder 

pub struct InterleavedTansEncoder { /* private fields */ }

Interleaved tANS encoder for Zstd sequences (LL, OF, ML).

Implementations

impl InterleavedTansEncoder

pub fn new( ll_table: &FseTable, of_table: &FseTable, ml_table: &FseTable, ) -> Self

Create encoder from three FSE tables.

Note: For predefined tables, prefer new_predefined() which uses cached encoders for better performance.

pub fn new_predefined() -> Self

Create encoder using cached predefined tANS encoders.

This is the fast path for encoding with predefined FSE tables. Cloning cached encoders is much faster than building from scratch.

pub fn from_encoders( ll_encoder: TansEncoder, of_encoder: TansEncoder, ml_encoder: TansEncoder, ) -> Self

Create encoder from pre-built tANS encoders.

This allows using custom FSE tables by building encoders separately.

pub fn init_states(&mut self, ll: u8, of: u8, ml: u8)

Initialize all three encoders with their first symbols.

These should be the LAST symbols in the sequence (encoding is reversed).

pub fn encode_sequence(&mut self, ll: u8, of: u8, ml: u8) -> [(u32, u8); 3]

Encode one sequence (LL, OF, ML) and return bits for each.

Returns [(ll_bits, ll_nbits), (of_bits, of_nbits), (ml_bits, ml_nbits)]

Note: tANS encoding order matters! We encode in reverse of decode order. Decoder reads FSE updates: LL, ML, OF So we encode: OF, ML, LL (reverse order for correct state transitions)

pub fn get_states(&self) -> (u32, u32, u32)

Get final states for all three encoders.

These become the decoder’s initial states.

pub fn accuracy_logs(&self) -> (u8, u8, u8)

Get accuracy logs for all three encoders.

pub fn reset(&mut self)

Reset all encoders.

Trait Implementations

impl Debug for InterleavedTansEncoder

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

Formats the value using the given formatter.