Struct PlaneLayout 

pub struct PlaneLayout {
    pub plane0: PlaneInfo,
    pub extra: [Option<PlaneInfo>; 3],
}

How a pixel format lays out its planes in memory.

Plane 0 is stored as a non-Option PlaneInfo because every PixelFormat has at least one plane — the type encodes that invariant so callers (stride math, CPU upload, etc.) can name plane 0 without a runtime expect(...). Planes 1..=3 are Option because only multi-plane formats populate them.

extra[i] is Some iff i + 1 < count(). Use Self::plane for index-based access; Self::count for the populated plane count.

Fields

plane0: PlaneInfo

extra: [Option<PlaneInfo>; 3]

Implementations

impl PlaneLayout

pub const fn count(&self) -> u8

Total populated plane count (1..=4). Plane 0 always counts.

pub const fn plane(&self, i: u8) -> Option<PlaneInfo>

Storage description of plane i. Some iff i < self.count().

Trait Implementations

impl Clone for PlaneLayout

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PlaneLayout

impl Debug for PlaneLayout

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

Formats the value using the given formatter.

impl Eq for PlaneLayout

impl PartialEq for PlaneLayout

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PlaneLayout