Struct webp::BitstreamFeatures

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pub struct BitstreamFeatures(_);

Expand description

A wrapper around libwebp-sys::WebPBitstreamFeatures which allows to get information about the image.

Implementations

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impl BitstreamFeatures

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pub fn new(data: &[u8 ]) -> Option<Self>

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pub fn width(&self) -> u32

Returns the width of the image as described by the bitstream in pixels.

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pub fn height(&self) -> u32

Returns the height of the image as described by the bitstream in pixels.

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pub fn has_alpha(&self) -> bool

Returns true if the image as described by the bitstream has an alpha channel.

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pub fn has_animation(&self) -> bool

Returns true if the image as described by the bitstream is animated.

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pub fn format(&self) -> Option<BitstreamFormat>

Returns the format of the image as described by image bitstream.

Trait Implementations

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impl Debug for BitstreamFeatures

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl RefUnwindSafe for BitstreamFeatures

impl Send for BitstreamFeatures

impl Sync for BitstreamFeatures

impl Unpin for BitstreamFeatures

impl UnwindSafe for BitstreamFeatures

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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

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

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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.

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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.

Struct webp::BitstreamFeatures

Implementations

impl BitstreamFeatures

pub fn new(data: &[u8]) -> Option<Self>

pub fn width(&self) -> u32

pub fn height(&self) -> u32

pub fn has_alpha(&self) -> bool

pub fn has_animation(&self) -> bool

pub fn format(&self) -> Option<BitstreamFormat>

Trait Implementations

impl Debug for BitstreamFeatures

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

Auto Trait Implementations

impl RefUnwindSafe for BitstreamFeatures

impl Send for BitstreamFeatures

impl Sync for BitstreamFeatures

impl Unpin for BitstreamFeatures

impl UnwindSafe for BitstreamFeatures

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

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>

pub fn new(data: &[u8 ]) -> Option<Self>

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>,