Struct Feat 

pub struct Feat {
    pub nb: [u16; 8],
    pub sg: [i8; 3],
    pub par: u16,
    pub pnb: u16,
    pub class: u8,
    pub mask: u8,
    pub has_par: bool,
    pub pm: u16,
    pub sv: [i32; 18],
    pub pv: i32,
}

Context features of one coefficient — all causal (already coded).

Fields

nb: [u16; 8]

Capped magnitudes of causal neighbours: W, N, U, NW, NE, UW, UN, WW (axis 2 = W/E, axis 1 = N, axis 0 = U), 0 outside the band.

sg: [i8; 3]

Signs of W, N, U (−1, 0, +1).

par: u16

Capped parent magnitude (0 if no parent band).

pnb: u16

Capped sum of the parent’s 6 face neighbours.

class: u8

Subband class 0..NCLASS.

mask: u8

Highpass mask.

has_par: bool

Whether a parent band exists.

pm: u16

Capped magnitude of the in-band prediction (0 when prediction is off).

sv: [i32; 18]

Signed context values: 0–7 behind nb, 8 parent, 9 NN, 10 UU, 11 UE, 12–17 the parent’s face neighbours (−/+ per axis).

pv: i32

Signed in-band prediction.

Trait Implementations

impl Clone for Feat

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 Feat

impl Debug for Feat

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

Formats the value using the given formatter.

impl Default for Feat

fn default() -> Self

Returns the “default value” for a type.