Enum ChromaSiting 

#[non_exhaustive]
pub enum ChromaSiting {
    Unknown,
    Left,
    TopLeft,
    Center,
}

Where chroma samples sit relative to luma. An axis of its own: Unknown is kept, never defaulted to Center; a conversion that needs siting refuses Unknown on a subsampled axis or takes it from the caller.

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.

Unknown

The stream does not say.

Left

Co-sited with the left luma sample, vertically between rows (MPEG-2 style 4:2:0).

TopLeft

Co-sited with the top-left luma sample.

Center

Centred between luma samples (JPEG style).

Trait Implementations

impl Clone for ChromaSiting

fn clone(&self) -> ChromaSiting

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ChromaSiting

impl Debug for ChromaSiting

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

Formats the value using the given formatter.

impl Default for ChromaSiting

fn default() -> ChromaSiting

Returns the “default value” for a type.

impl Eq for ChromaSiting

impl Hash for ChromaSiting

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

where __H: Hasher,

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 ChromaSiting

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ChromaSiting