pub enum FilterType {
NoFilter,
Sub,
Up,
Avg,
Paeth,
// some variants omitted
}
Expand description
Filter algorithms used to process image data to improve compression.
The default filter is Sub
though this default may change in the future, most notable if an
adaptive encoding option is implemented.
Variants§
NoFilter
No processing done, best used for low bit depth greyscale or data with a low color count
Sub
Filters based on previous pixel in the same scanline
Up
Filters based on the scanline above
Avg
Filters based on the average of left and right neighbor pixels
Paeth
Algorithm that takes into account the left, upper left, and above pixels
Trait Implementations§
source§impl Clone for FilterType
impl Clone for FilterType
source§fn clone(&self) -> FilterType
fn clone(&self) -> FilterType
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for FilterType
impl Debug for FilterType
source§impl Default for FilterType
impl Default for FilterType
source§fn default() -> FilterType
fn default() -> FilterType
Returns the “default value” for a type. Read more
source§impl PartialEq for FilterType
impl PartialEq for FilterType
source§fn eq(&self, other: &FilterType) -> bool
fn eq(&self, other: &FilterType) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.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§
source§impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S
impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S
source§fn adapt_into_using<M>(self, method: M) -> Dwhere
M: TransformMatrix<Swp, Dwp, T>,
fn adapt_into_using<M>(self, method: M) -> Dwhere
M: TransformMatrix<Swp, Dwp, T>,
Convert the source color to the destination color using the specified
method
source§fn adapt_into(self) -> D
fn adapt_into(self) -> D
Convert the source color to the destination color using the bradford
method by default
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T, U> ConvertInto<U> for Twhere
U: ConvertFrom<T>,
impl<T, U> ConvertInto<U> for Twhere
U: ConvertFrom<T>,
source§fn convert_into(self) -> U
fn convert_into(self) -> U
Convert into T with values clamped to the color defined bounds Read more
source§fn convert_unclamped_into(self) -> U
fn convert_unclamped_into(self) -> U
Convert into T. The resulting color might be invalid in its color space Read more
source§fn try_convert_into(self) -> Result<U, OutOfBounds<U>>
fn try_convert_into(self) -> Result<U, OutOfBounds<U>>
Convert into T, returning ok if the color is inside of its defined range,
otherwise an
OutOfBounds
error is returned which contains the unclamped color. Read moresource§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Checks if this value is equivalent to the given key. Read more