Struct QuarterScan 

pub struct QuarterScan<const PANEL_ROWS: usize, const PANEL_COLS: usize> {}

Pixel remapper for panels with 1/4-scan (also called 1/16-scan on 64-row panels)

Some LED panels — particularly 64×64 modules — use fewer address lines than the row count would suggest. A “1/16-scan” 64×64 panel, for example, has only 16 row-address lines instead of the expected 32. The panel internally maps 4 groups of 16 rows into separate horizontal sections of the shift register, so the physical framebuffer is 4× wider and 4× shorter than the logical display.

Important: the exact interleaving pattern varies by driver chip and manufacturer (FM6126, ICN2037, MBI5153, etc.). The remap_xy method must be filled in to match your specific panel. The default implementation panics at runtime as a reminder.

Type Parameters

• PANEL_ROWS — Logical row count of the panel (e.g. 64)
• PANEL_COLS — Logical column count of the panel (e.g. 64)

Framebuffer geometry

The underlying framebuffer must be allocated with:

• rows = PANEL_ROWS / 4 (e.g. 16 for a 64-row panel)
• cols = PANEL_COLS * 4 (e.g. 256 for a 64-column panel)

Trait Implementations

impl<const PANEL_ROWS: usize, const PANEL_COLS: usize> Debug for QuarterScan<PANEL_ROWS, PANEL_COLS>

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

Formats the value using the given formatter.

impl<const PANEL_ROWS: usize, const PANEL_COLS: usize> PixelRemapper for QuarterScan<PANEL_ROWS, PANEL_COLS>

const VIRT_ROWS: usize = PANEL_ROWS

Number of rows in the virtual panel

const VIRT_COLS: usize = PANEL_COLS

Number of columns in the virtual panel

const FB_ROWS: usize

Number of rows in the actual framebuffer

const FB_COLS: usize

Number of columns in the actual framebuffer

fn remap_xy(_x: usize, _y: usize) -> (usize, usize)

Remap an x,y coordinate to a framebuffer pixel

fn remap<C: PixelColor>(pixel: Pixel<C>) -> Pixel<C>

Remap a virtual pixel to a framebuffer pixel

fn remap_point(point: Point) -> Point

Remap a virtual point to a framebuffer point

fn virtual_size() -> (usize, usize)

Size of the virtual panel

fn fb_size() -> (usize, usize)

Size of the framebuffer that this remaps to