Struct libwebp::boxed::WebpBox

pub struct WebpBox<T: ?Sized> { /* private fields */ }

A safe RAII wrapper for WebPFree.

WebpBox is much like Box, except what function is used for freeing.

Example

The main usecase is as a return value from libwebp.

use libwebp::WebPEncodeRGBA;

let buf: &[u8];
// This variable has the type of `WebpBox<[u8]>`.
let data = WebPEncodeRGBA(buf, 2, 2, 8, 75.0).unwrap();

Implementations

impl<T: ?Sized> WebpBox<T>

pub unsafe fn from_raw(raw: *mut T) -> WebpBox<T>

Creates WebpBox from a raw pointer.

Safety

• raw must be non-null.
• raw must be well-aligned.
• The pointee must be valid as T.
• The pointee must be exclusively accessible.
• raw must be freeable via WebPFree.

pub fn into_raw(b: WebpBox<T>) -> *mut T

Turns WebpBox into a raw pointer without freeing anything.

Trait Implementations

impl<T: Debug + ?Sized> Debug for WebpBox<T>

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

Formats the value using the given formatter.

impl<T: ?Sized> Deref for WebpBox<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T: ?Sized> DerefMut for WebpBox<T>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<T: ?Sized> Drop for WebpBox<T>

fn drop(&mut self)

Executes the destructor for this type.

impl<T: ?Sized + RefUnwindSafe> RefUnwindSafe for WebpBox<T>

impl<T: ?Sized + Send> Send for WebpBox<T>

impl<T: ?Sized + Sync> Sync for WebpBox<T>

impl<T: ?Sized + UnwindSafe> UnwindSafe for WebpBox<T>