Struct Image 

pub struct Image { /* private fields */ }

A premultiplied ARGB8888 image, one u32 per pixel, rows contiguous.

Premultiplied because that is what KMS scans out: a plane’s ARGB8888 pixels already have their color scaled by their coverage, and compositing them any other way would double-apply it. The layout is 0xAARRGGBB in a native-endian u32, which is what a little-endian host sees in a DRM_FORMAT_ARGB8888 buffer.

Implementations

impl Image

pub fn new(width: u32, height: u32) -> Self

A transparent image of the given size.

A zero in either dimension gives the same empty image as Image::default – there is no such thing as a 0x100 picture, and carrying one would mean every consumer checking both dimensions.

pub const fn width(&self) -> u32

Width in pixels.

pub const fn height(&self) -> u32

Height in pixels.

pub const fn stride_bytes(&self) -> u32

Bytes per row. Always width * 4; the storage is tightly packed.

pub const fn is_empty(&self) -> bool

Whether either dimension is zero.

pub fn pixels(&self) -> &[u32]

The pixels, row-major.

pub fn pixels_mut(&mut self) -> &mut [u32]

The pixels, row-major, mutable.

Trait Implementations

impl Clone for Image

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Image

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

Formats the value using the given formatter.

impl Default for Image

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Image

impl PartialEq for Image

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Image