Struct DecodeRequest 

pub struct DecodeRequest {
    pub roi: Option<Rect>,
    pub scale: Downscale,
}

Source-region and reduced-resolution shape requested during decode.

Fields

roi: Option<Rect>

Optional source-image region. None requests the full image.

scale: Downscale

Reduced-resolution decode scale.

Implementations

impl DecodeRequest

pub const FULL: DecodeRequest

Full-image, full-resolution decode request.

pub const fn full() -> DecodeRequest

Construct a full-image, full-resolution decode request.

pub const fn region(roi: Rect) -> DecodeRequest

Construct a full-resolution region decode request.

pub const fn scaled(scale: Downscale) -> DecodeRequest

Construct a full-image scaled decode request.

pub const fn region_scaled(roi: Rect, scale: Downscale) -> DecodeRequest

Construct a region scaled decode request.

pub const fn is_full_resolution_full_image(self) -> bool

Return whether this request covers the full image at full resolution.

pub fn decoded_rect(self, dimensions: (u32, u32)) -> Rect

Return the output rectangle covered by this request for image dimensions.

Trait Implementations

impl Clone for DecodeRequest

fn clone(&self) -> DecodeRequest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DecodeRequest

impl Debug for DecodeRequest

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

Formats the value using the given formatter.

impl Default for DecodeRequest

fn default() -> DecodeRequest

Returns the “default value” for a type.

impl Eq for DecodeRequest

impl Hash for DecodeRequest

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 PartialEq for DecodeRequest

fn eq(&self, other: &DecodeRequest) -> 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 StructuralPartialEq for DecodeRequest