[−][src]Enum lodepng::ffi::FilterStrategy
automatically use color type with less bits per pixel if losslessly possible. Default: AUTO
Variants
every filter at zero
Use filter that gives minumum sum, as described in the official PNG filter heuristic.
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-search PNG filters by compressing each filter for each scanline. Experimental, very slow, and only rarely gives better compression than MINSUM.
use predefined_filters buffer: you specify the filter type for each scanline
Trait Implementations
impl Clone for FilterStrategy
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fn clone(&self) -> FilterStrategy
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fn clone_from(&mut self, source: &Self)
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impl Copy for FilterStrategy
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impl Debug for FilterStrategy
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impl Eq for FilterStrategy
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impl PartialEq<FilterStrategy> for FilterStrategy
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fn eq(&self, other: &FilterStrategy) -> bool
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#[must_use]fn ne(&self, other: &Rhs) -> bool
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impl StructuralEq for FilterStrategy
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impl StructuralPartialEq for FilterStrategy
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Auto Trait Implementations
impl RefUnwindSafe for FilterStrategy
impl Send for FilterStrategy
impl Sync for FilterStrategy
impl Unpin for FilterStrategy
impl UnwindSafe for FilterStrategy
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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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>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,