Enum ChromaSubsampling 

pub enum ChromaSubsampling {
    Cs420,
    Cs444,
}

Chroma subsampling mode.

• Cs420 (default): 4:2:0 — U/V at half horizontal and half vertical resolution. Universally supported, lower bandwidth.
• Cs444: 4:4:4 — full-resolution chroma. Eliminates colour fringing on sharp edges (ideal for text / UI), but requires encoder support.

Set via BLIT_CHROMA env var. Default: 444 (fall back to 420 if unsupported). Use BLIT_CHROMA=420 to force 4:2:0.

Variants

Cs420

Cs444

Implementations

impl ChromaSubsampling

pub fn label(self) -> &'static str

pub fn from_env() -> Self

pub fn is_444(self) -> bool

Trait Implementations

impl Clone for ChromaSubsampling

fn clone(&self) -> ChromaSubsampling

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChromaSubsampling

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

Formats the value using the given formatter.

impl Default for ChromaSubsampling

fn default() -> ChromaSubsampling

Returns the “default value” for a type.

impl Hash for ChromaSubsampling

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ChromaSubsampling

fn eq(&self, other: &ChromaSubsampling) -> 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 ChromaSubsampling

impl Eq for ChromaSubsampling

impl StructuralPartialEq for ChromaSubsampling