Struct ColorCache 

pub struct ColorCache { /* private fields */ }

Color cache for palette mode.

Stores recently used colors to improve entropy coding efficiency.

Implementations

impl ColorCache

pub fn new(max_size: usize, bit_depth: BitDepth) -> Self

Create a new color cache.

pub fn add(&mut self, color: u16)

Add a color to the cache.

pub fn contains(&self, color: u16) -> bool

Check if a color is in the cache.

pub fn find(&self, color: u16) -> Option<usize>

Find the index of a color in the cache.

pub fn colors(&self) -> &[u16]

Get all cached colors.

pub fn len(&self) -> usize

Get the cache size.

pub fn is_empty(&self) -> bool

Check if the cache is empty.

pub fn clear(&mut self)

Clear the cache.

pub fn build_from_neighbors(&mut self, top: &[u16], left: &[u16])

Build cache from neighbor samples.

Trait Implementations

impl Clone for ColorCache

fn clone(&self) -> ColorCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColorCache

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

Formats the value using the given formatter.

impl Default for ColorCache

fn default() -> Self

Returns the “default value” for a type.