Enum Lz77Method 

pub enum Lz77Method {
    Rle,
    Greedy,
    Optimal,
}

LZ77 method selection.

Variants

Rle

RLE-only: only matches consecutive identical values (distance = 1). Fast but limited compression on photographic content.

Greedy

Full backward references with hash chains (greedy matching). Finds matches at arbitrary distances within a sliding window. 1-3% better compression on photos, slower.

Optimal

Optimal backward references via Viterbi DP (from libjxl ApplyLZ77_Optimal). Considers all viable matches at each position and finds the minimum-cost parse via dynamic programming. Best compression, slowest.

Trait Implementations

impl Clone for Lz77Method

fn clone(&self) -> Lz77Method

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Lz77Method

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

Formats the value using the given formatter.

impl Default for Lz77Method

fn default() -> Lz77Method

Returns the “default value” for a type.

impl PartialEq for Lz77Method

fn eq(&self, other: &Lz77Method) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Lz77Method

impl Eq for Lz77Method

impl StructuralPartialEq for Lz77Method