silk.compress.lzma_decode.

Import as LzmaState with import silk.compress.lzma_decode { LzmaState }.

Public declarations: 1.

LzmaState#

pub struct LzmaState

Internal range and dictionary state. The output buffer also holds dictionary history.

Field ip#

pub ip: usize

Current input offset.

Field inputEnd#

pub inputEnd: usize

Exclusive input bound for the current chunk.

Field op#

pub op: usize

Current output offset.

Field outputEnd#

pub outputEnd: usize

Exclusive output bound for the current stream or chunk.

Field dictionaryStart#

pub dictionaryStart: usize

Output offset of the most recent dictionary reset.

Field dictionarySize#

pub dictionarySize: u64

Maximum permitted match distance.

Field failed#

pub failed: bool

First failure, if any.

Field reason#

pub reason: DecodeReason

Failure reason, meaningful only when failed is true.

Field ended#

pub ended: bool

Whether an LZMA end marker was decoded.

Field range#

pub range: u32

Current arithmetic range.

Field code#

pub code: u32

Current arithmetic code.

Implementation LzmaState#

impl LzmaState

Associated function make#

pub fn make(inputEnd: usize, outputEnd: usize) -> LzmaState

Creates empty state; probability storage is allocated by configure.

Method reject#

pub fn reject(self: &mut Self, reason: DecodeReason) -> ()

Records only the first failure.

Method error#

pub fn error(self: &Self) -> DecodeError

Returns the current failure with progress offsets.

Method byte#

pub fn byte(self: &mut Self, input: &[u8]) -> u32

Reads one byte without crossing the current chunk's input boundary.

Method little#

pub fn little(self: &mut Self, input: &[u8], count: u32) -> u64

Reads a little-endian integer of at most eight bytes.

Method configure#

pub effect fn configure(self: &mut Self, property: u32, lzma2: bool, workspace: usize) -> ()
    ! OutOfMemoryError
    ? &mut Allocator

Validates properties and resets all probability models within the workspace limit.

Method reset#

pub fn reset(self: &mut Self) -> ()

Resets probabilities and repeat distances without changing dictionary history.

Method startRange#

pub fn startRange(self: &mut Self, input: &[u8]) -> ()

Starts a five-byte range-coded chunk and validates its reserved byte.

Method put#

pub fn put(self: &mut Self, output: &mut [u8], value: u8) -> ()

Appends a byte, respecting the caller's output bound.

Method symbol#

pub fn symbol(self: &mut Self, input: &[u8], output: &mut [u8]) -> ()

Decodes one literal, match, or end marker with bounded input and output access.

Category: Data formats.

Profiles: aarch64-apple-darwin, aarch64-unknown-linux-gnu, aarch64-unknown-linux-gnu-no-libc, x86_64-unknown-linux-gnu, x86_64-unknown-linux-gnu-no-libc, wasm32-unknown-unknown, wasm32-wasip1, wasm32-wasip2.