Enum jpeg_decoder::UnsupportedFeature

source · [−]

pub enum UnsupportedFeature {
    Hierarchical,
    ArithmeticEntropyCoding,
    SamplePrecision(u8),
    ComponentCount(u8),
    DNL,
    SubsamplingRatio,
    NonIntegerSubsamplingRatio,
}

Expand description

An enumeration over JPEG features (currently) unsupported by this library.

Support for features listed here may be included in future versions of this library.

Variants

`Hierarchical`

Hierarchical JPEG.

`ArithmeticEntropyCoding`

JPEG using arithmetic entropy coding instead of Huffman coding.

`SamplePrecision(u8)`

Sample precision in bits. 8 bit sample precision is what is currently supported in non-lossless coding process.

`ComponentCount(u8)`

Number of components in an image. 1, 3 and 4 components are currently supported.

`DNL`

An image can specify a zero height in the frame header and use the DNL (Define Number of Lines) marker at the end of the first scan to define the number of lines in the frame.

`SubsamplingRatio`

Subsampling ratio.

`NonIntegerSubsamplingRatio`

A subsampling ratio not representable as an integer.

Trait Implementations

source

impl Debug for UnsupportedFeature

source

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl RefUnwindSafe for UnsupportedFeature

impl Send for UnsupportedFeature

impl Sync for UnsupportedFeature

impl Unpin for UnsupportedFeature

fn into(self) -> U

Calls U::from(self).

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

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::()

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. 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

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

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

Performs the conversion.

Enum jpeg_decoder::UnsupportedFeature

Variants

Hierarchical

ArithmeticEntropyCoding

SamplePrecision(u8)

ComponentCount(u8)

DNL

SubsamplingRatio

NonIntegerSubsamplingRatio

Trait Implementations

impl Debug for UnsupportedFeature

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

Auto Trait Implementations

impl RefUnwindSafe for UnsupportedFeature

impl Send for UnsupportedFeature

impl Sync for UnsupportedFeature

impl Unpin for UnsupportedFeature

impl UnwindSafe for UnsupportedFeature

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::()

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

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

type Error = Infallible

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

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

`Hierarchical`

`ArithmeticEntropyCoding`

`SamplePrecision(u8)`

`ComponentCount(u8)`

`DNL`

`SubsamplingRatio`

`NonIntegerSubsamplingRatio`

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

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