Struct FbInfo 

pub struct FbInfo {
    pub size: Size,
    pub stride_bytes: u32,
    pub bits_per_pixel: u32,
    pub layout: PixelLayout,
}

The geometry of a framebuffer.

Fields

size: Size

Visible extent in pixels.

stride_bytes: u32

Distance between the starts of consecutive rows, in bytes.

fbdev calls this line_length, and it is routinely wider than width * bytes_per_pixel. Assuming otherwise is the classic fbdev bug: a picture that shears diagonally on hardware and looks fine in a VM.

bits_per_pixel: u32

Bit depth as reported.

layout: PixelLayout

Inferred pixel layout.

Implementations

impl FbInfo

pub fn from_sysfs( virtual_size: &str, modes: &str, stride: &str, bits_per_pixel: &str, ) -> Result<Self, FbInfoError>

Builds the geometry from raw sysfs attribute contents.

modes is preferred for the visible extent because virtual_size includes any area reserved for panning, which on a double-buffered framebuffer is twice the height of what is actually on screen.

pub fn required_bytes(&self) -> usize

Bytes the mapping must cover for this geometry.

pub fn stride_pixels(&self) -> Option<u32>

Row stride in pixels, when that is a whole number.

Trait Implementations

impl Clone for FbInfo

fn clone(&self) -> FbInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FbInfo

impl Debug for FbInfo

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

Formats the value using the given formatter.

impl Display for FbInfo

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

Formats the value using the given formatter.

impl Eq for FbInfo

impl PartialEq for FbInfo

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FbInfo