Enum ProtoLayout 

pub enum ProtoLayout {
    Nhwc,
    Nchw,
}

Memory layout of the prototype tensor within ProtoData.

Models may output protos in either channel-last (NHWC) or channel-first (NCHW) layout. The mask materialisation kernels dispatch on this field to avoid a costly per-frame transpose.

Variants

Nhwc

Channel-last: tensor shape is [H, W, K], contiguous along K. This is the traditional layout produced by the extract_proto_data path after transposing from NCHW model outputs.

Nchw

Channel-first: tensor shape is [K, H, W], each channel plane is contiguous. Skipping the NCHW→NHWC transpose saves ~3 ms per frame on Cortex-A53/A55 targets (819 KB for 32×160×160 protos).

Trait Implementations

impl Clone for ProtoLayout

fn clone(&self) -> ProtoLayout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProtoLayout

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

Formats the value using the given formatter.

impl PartialEq for ProtoLayout

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ProtoLayout

impl Eq for ProtoLayout

impl StructuralPartialEq for ProtoLayout