Struct ExtractChannel 

pub struct ExtractChannel { /* private fields */ }

Extract one channel as a greyscale image (SPEC §Core ops).

Implementations

impl ExtractChannel

pub const fn new(index: usize) -> ExtractChannel

Extract channel index, counted from zero in memory order.

The index is validated against the actual input when chained, since the channel count is not known here.

pub const fn index(&self) -> usize

The channel this op extracts.

Trait Implementations

impl Clone for ExtractChannel

fn clone(&self) -> ExtractChannel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ExtractChannel

impl Debug for ExtractChannel

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

Formats the value using the given formatter.

impl Eq for ExtractChannel

impl Hash for ExtractChannel

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Op for ExtractChannel

fn rescaled(&self) -> Option<Arc<dyn Op>>

Pointwise: every output pixel depends on the one input pixel beneath it, with no length or coordinate anywhere, so resolution is irrelevant to what this op means, and there is no bound state to discard.

fn name(&self) -> &'static str

A short, stable name for this op, used in diagnostics.

fn output_descriptor( &self, inputs: &[ImageDescriptor], ) -> Result<ImageDescriptor, PixelsError>

Compute the output shape from the input shapes.

fn input_regions( &self, output: Region, _inputs: &[ImageDescriptor], ) -> Result<Vec<Region>, PixelsError>

The input regions needed to produce output.

fn compute( &self, inputs: &[Tile<'_>], output: &mut TileMut<'_>, ) -> Result<(), PixelsError>

Fill output from inputs — the kernel entry point.

fn arity(&self) -> usize

The number of inputs this op consumes.

fn access_pattern(&self) -> AccessPattern

How this op reads its inputs; drives tile negotiation (ADR-0003).

impl PartialEq for ExtractChannel

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExtractChannel