Enum ChromaUpsample 

#[non_exhaustive]
pub enum ChromaUpsample {
    Box,
}

Chroma upsampling filter for a fused native-4:2:0 Rgb decode (see ImageDecoder::set_output_format).

Box — 2×2 nearest-neighbour replication — is the only filter implemented today; the type exists so that a future fancy/triangle-filtered mode (libjpeg-turbo’s default, and a materially more expensive one — see BENCHMARKS.md) can be added as a new variant without a breaking API change to ImageDecoder::set_chroma_upsample. #[non_exhaustive] for the same reason: adding a variant later must not be a semver break for callers who match on this type.

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

2×2 nearest-neighbour (box) chroma replication.

Trait Implementations

impl Clone for ChromaUpsample

fn clone(&self) -> ChromaUpsample

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ChromaUpsample

impl Debug for ChromaUpsample

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

Formats the value using the given formatter.

impl Default for ChromaUpsample

fn default() -> ChromaUpsample

Returns the “default value” for a type.

impl Eq for ChromaUpsample

impl PartialEq for ChromaUpsample

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ChromaUpsample