Enum image::ExtendedColorType
source · [−]#[non_exhaustive]
pub enum ExtendedColorType {
Show 26 variants
A8,
L1,
La1,
Rgb1,
Rgba1,
L2,
La2,
Rgb2,
Rgba2,
L4,
La4,
Rgb4,
Rgba4,
L8,
La8,
Rgb8,
Rgba8,
L16,
La16,
Rgb16,
Rgba16,
Bgr8,
Bgra8,
Rgb32F,
Rgba32F,
Unknown(u8),
}
Expand description
An enumeration of color types encountered in image formats.
This is not exhaustive over all existing image formats but should be granular enough to allow round tripping of decoding and encoding as much as possible. The variants will be extended as necessary to enable this.
Another purpose is to advise users of a rough estimate of the accuracy and effort of the decoding from and encoding to such an image format.
Variants (Non-exhaustive)
This enum is marked as non-exhaustive
A8
Pixel is 8-bit alpha
L1
Pixel is 1-bit luminance
La1
Pixel is 1-bit luminance with an alpha channel
Rgb1
Pixel contains 1-bit R, G and B channels
Rgba1
Pixel is 1-bit RGB with an alpha channel
L2
Pixel is 2-bit luminance
La2
Pixel is 2-bit luminance with an alpha channel
Rgb2
Pixel contains 2-bit R, G and B channels
Rgba2
Pixel is 2-bit RGB with an alpha channel
L4
Pixel is 4-bit luminance
La4
Pixel is 4-bit luminance with an alpha channel
Rgb4
Pixel contains 4-bit R, G and B channels
Rgba4
Pixel is 4-bit RGB with an alpha channel
L8
Pixel is 8-bit luminance
La8
Pixel is 8-bit luminance with an alpha channel
Rgb8
Pixel contains 8-bit R, G and B channels
Rgba8
Pixel is 8-bit RGB with an alpha channel
L16
Pixel is 16-bit luminance
La16
Pixel is 16-bit luminance with an alpha channel
Rgb16
Pixel contains 16-bit R, G and B channels
Rgba16
Pixel is 16-bit RGB with an alpha channel
Bgr8
Pixel contains 8-bit B, G and R channels
Bgra8
Pixel is 8-bit BGR with an alpha channel
Rgb32F
Pixel is 32-bit float RGB
Rgba32F
Pixel is 32-bit float RGBA
Unknown(u8)
Pixel is of unknown color type with the specified bits per pixel. This can apply to pixels which are associated with an external palette. In that case, the pixel value is an index into the palette.
Implementations
sourceimpl ExtendedColorType
impl ExtendedColorType
sourcepub fn channel_count(self) -> u8
pub fn channel_count(self) -> u8
Get the number of channels for colors of this type.
Note that the Unknown
variant returns a value of 1
since pixels can only be treated as
an opaque datum by the library.
Trait Implementations
sourceimpl Clone for ExtendedColorType
impl Clone for ExtendedColorType
sourcefn clone(&self) -> ExtendedColorType
fn clone(&self) -> ExtendedColorType
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for ExtendedColorType
impl Debug for ExtendedColorType
sourceimpl From<ColorType> for ExtendedColorType
impl From<ColorType> for ExtendedColorType
sourceimpl Hash for ExtendedColorType
impl Hash for ExtendedColorType
sourceimpl PartialEq<ExtendedColorType> for ExtendedColorType
impl PartialEq<ExtendedColorType> for ExtendedColorType
sourcefn eq(&self, other: &ExtendedColorType) -> bool
fn eq(&self, other: &ExtendedColorType) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &ExtendedColorType) -> bool
fn ne(&self, other: &ExtendedColorType) -> bool
This method tests for !=
.
impl Copy for ExtendedColorType
impl Eq for ExtendedColorType
impl StructuralEq for ExtendedColorType
impl StructuralPartialEq for ExtendedColorType
Auto Trait Implementations
impl RefUnwindSafe for ExtendedColorType
impl Send for ExtendedColorType
impl Sync for ExtendedColorType
impl Unpin for ExtendedColorType
impl UnwindSafe for ExtendedColorType
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Pointable for T
impl<T> Pointable for T
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more