Enum DownsamplingMethod 

#[non_exhaustive]
pub enum DownsamplingMethod {
    Box,
    GammaAware,
    GammaAwareIterative,
}

Chroma downsampling algorithm for RGB->YCbCr conversion.

Only applies to RGB/RGBX input. Ignored for grayscale, YCbCr, and planar input.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Box

Simple box filter averaging (fast, matches C++ jpegli default)

GammaAware

Gamma-aware averaging (better color accuracy at edges)

GammaAwareIterative

Iterative optimization (SharpYUV-style, best quality, ~3x slower)

Implementations

impl DownsamplingMethod

pub const fn uses_gamma_aware(self) -> bool

Returns true if this method uses gamma-aware downsampling.

Trait Implementations

impl Clone for DownsamplingMethod

fn clone(&self) -> DownsamplingMethod

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DownsamplingMethod

impl Debug for DownsamplingMethod

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

Formats the value using the given formatter.

impl Default for DownsamplingMethod

fn default() -> DownsamplingMethod

Returns the “default value” for a type.

impl Eq for DownsamplingMethod

impl PartialEq for DownsamplingMethod

fn eq(&self, other: &DownsamplingMethod) -> 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 StructuralPartialEq for DownsamplingMethod