Enum `Filter`

#[non_exhaustive]
pub enum Filter

The byte level filter applied to scanlines to prepare them for compression.

Compression in general benefits from repetitive data. The filter is a content-aware method of compressing the range of occurring byte values to help the compression algorithm. Note that this does not operate on pixels but on raw bytes of a scanline.

Details on how each filter works can be found in the PNG Book.

The default filter is Adaptive, which uses heuristics to select the best filter for every row.

Variants

NoFilter
Sub
Up
Avg
Paeth
Adaptive
MinEntropy

Trait Implementations

`impl Clone for Filter`

fn clone(&self) -> Self

`impl Copy for Filter`

`impl Debug for Filter`

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

`impl Default for Filter`

fn default() -> Self

`impl Eq for Filter`

`impl PartialEq for Filter`

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

`impl StructuralPartialEq for Filter`

Auto Trait Implementations

`impl Freeze for Filter`

`impl RefUnwindSafe for Filter`

`impl Send for Filter`

`impl Sync for Filter`

`impl Unpin for Filter`

`impl UnsafeUnpin for Filter`

`impl UnwindSafe for Filter`

Blanket Implementations

`impl<T> Any for Filter where T: 'static + ?Sized,`

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for Filter where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for Filter where T: ?Sized,`

fn borrow_mut(&mut self) -> &mut T

`impl<T> CloneToUninit for Filter where T: Clone,`

unsafe fn clone_to_uninit(&self, dest: *mut u8)

`impl<T> From<T> for Filter`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> ToOwned for Filter where T: Clone,`

type Owned = T;
fn to_owned(&self) -> T
fn clone_into(&self, target: &mut T)

`impl<T, U> Into for Filter where U: From<T>,`

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for Filter where U: Into<T>,`

type Error = never;
fn try_from(value: U) -> Result<T, never>

`impl<T, U> TryInto for Filter where U: TryFrom<T>,`

type Error = >::Error;
fn try_into(self) -> Result<U, >::Error>