Enum png::FilterType

source · [−]

#[repr(u8)]
pub enum FilterType {
    NoFilter,
    Sub,
    Up,
    Avg,
    Paeth,
}

Expand description

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.

Variants

`NoFilter`

`Sub`

`Up`

`Avg`

`Paeth`

Implementations

source

impl FilterType

source

pub fn from_u8(n: u8) -> Option<FilterType>

u8 -> Self. Temporary solution until Rust provides a canonical one.

Trait Implementations

source

impl Clone for FilterType

source

fn clone(&self) -> FilterType

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

source

impl Debug for FilterType

source

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

Formats the value using the given formatter. Read more

source

impl Default for FilterType

source

fn default() -> Self

Returns the “default value” for a type. Read more

source

impl PartialEq<FilterType> for FilterType

source

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

This method tests for self and other values to be equal, and is used by ==. Read more

1.0.0 · source

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

This method tests for !=.

source

impl StructuralPartialEq for FilterType

Auto Trait Implementations

impl RefUnwindSafe for FilterType

impl Send for FilterType

impl Sync for FilterType

impl Unpin for FilterType

impl UnwindSafe for FilterType

Blanket Implementations

source

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

source

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

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

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

source

impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

source

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

const: unstable · source

pub fn into(self) -> U

Calls U::from(self).

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

source

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

type Owned = T

The resulting type after obtaining ownership.

source

pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

source

pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

source

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

source

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Enum png::FilterType

Variants

NoFilter

Sub

Up

Avg

Paeth

Implementations

impl FilterType

pub fn from_u8(n: u8) -> Option<FilterType>

Trait Implementations

impl Clone for FilterType

fn clone(&self) -> FilterType

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

impl Debug for FilterType

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

impl Default for FilterType

fn default() -> Self

impl PartialEq<FilterType> for FilterType

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

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

impl Copy for FilterType

impl Eq for FilterType

impl StructuralEq for FilterType

impl StructuralPartialEq for FilterType

Auto Trait Implementations

impl RefUnwindSafe for FilterType

impl Send for FilterType

impl Sync for FilterType

impl Unpin for FilterType

impl UnwindSafe for FilterType

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

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

type Owned = T

pub fn to_owned(&self) -> T

pub fn clone_into(&self, target: &mut T)

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

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

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

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

`NoFilter`

`Sub`

`Up`

`Avg`

`Paeth`

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

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

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

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

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

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

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