[−][src]Enum lodepng::ffi::FilterStrategy
automatically use color type with less bits per pixel if losslessly possible. Default: AUTO
Variants
ZERO
every filter at zero
MINSUM
Use filter that gives minumum sum, as described in the official PNG filter heuristic.
ENTROPY
Use the filter type that gives smallest Shannon entropy for this scanline. Depending on the image, this is better or worse than minsum.
BRUTE_FORCE
Brute-force-search PNG filters by compressing each filter for each scanline. Experimental, very slow, and only rarely gives better compression than MINSUM.
PREDEFINED
use predefined_filters buffer: you specify the filter type for each scanline
Trait Implementations
impl PartialEq<FilterStrategy> for FilterStrategy
[src]
fn eq(&self, other: &FilterStrategy) -> bool
[src]
#[must_use]
fn ne(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests for !=
.
impl Clone for FilterStrategy
[src]
fn clone(&self) -> FilterStrategy
[src]
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl Eq for FilterStrategy
[src]
impl Copy for FilterStrategy
[src]
impl Debug for FilterStrategy
[src]
Auto Trait Implementations
impl Send for FilterStrategy
impl Unpin for FilterStrategy
impl Sync for FilterStrategy
impl UnwindSafe for FilterStrategy
impl RefUnwindSafe for FilterStrategy
Blanket Implementations
impl<T> From<T> for T
[src]
impl<T, U> Into<U> for T where
U: From<T>,
[src]
U: From<T>,
impl<T> ToOwned for T where
T: Clone,
[src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
[src]
fn clone_into(&self, target: &mut T)
[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>,
[src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
[src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
[src]
impl<T> Borrow<T> for T where
T: ?Sized,
[src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
[src]
impl<T> Any for T where
T: 'static + ?Sized,
[src]
T: 'static + ?Sized,