Struct ResizePlan 

pub struct ResizePlan { /* private fields */ }

A validated, reusable full-canvas RGBA resize operation.

Build one plan per source canvas, then apply it to each composited frame of an animation. Self::transform_frame preserves the frame duration.

Implementations

impl ResizePlan

pub fn new( source: CanvasSize, options: ResizeOptions, ) -> Result<Self, ResizeError>

Validates resize options and derives the destination canvas.

The destination preserves the source aspect ratio, fits within the configured maximum, and never crops or pads pixels.

pub const fn source(&self) -> CanvasSize

Returns the source canvas expected by this plan.

pub const fn destination(&self) -> CanvasSize

Returns the destination canvas produced by this plan.

pub const fn is_noop(&self) -> bool

Returns whether the plan preserves the source dimensions.

pub fn transform_rgba(&self, source_rgba: &[u8]) -> Result<Vec<u8>, ResizeError>

One-shot convenience API for one complete, tightly packed RGBA canvas.

It allocates a workspace and output buffer for this call. For sequential animation frames, create one ResizeWorkspace with Self::workspace and reuse it instead.

pub fn workspace(&self) -> Result<ResizeWorkspace, ResizeError>

Creates reusable resize state for sequential animation frames.

Reuse this workspace for the full animation to retain its resizer and destination buffer between frames.

pub fn transform_frame( &self, frame: AnimationFrame, ) -> Result<AnimationFrame, ResizeError>

One-shot convenience API that transforms a decoded frame and preserves its duration.

It allocates for every call. For animation processing, prefer a reused ResizeWorkspace and construct the output frame at the call site.

Trait Implementations

impl Clone for ResizePlan

fn clone(&self) -> ResizePlan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ResizePlan

impl Debug for ResizePlan

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

Formats the value using the given formatter.

impl Eq for ResizePlan

impl PartialEq for ResizePlan

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ResizePlan