Struct image::jpeg::JPEGEncoder

source ·

pub struct JPEGEncoder<'a, W: 'a> { /* private fields */ }

Expand description

The representation of a JPEG encoder

Implementations

source

impl<'a, W: Write> JPEGEncoder<'a, W>

source

pub fn new(w: &mut W) -> JPEGEncoder<'_, W>

Create a new encoder that writes its output to w

source

pub fn new_with_quality(w: &mut W, quality: u8) -> JPEGEncoder<'_, W>

Create a new encoder that writes its output to w, and has the quality parameter quality with a value in the range 1-100 where 1 is the worst and 100 is the best.

source

pub fn encode(
 &mut self,
 image: &[u8],
 width: u32,
 height: u32,
 c: ColorType
) -> Result<()>

Encodes the image image that has dimensions width and height and ColorType c

The Image in encoded with subsampling ratio 4:2:2

Auto Trait Implementations

impl<'a, W> RefUnwindSafe for JPEGEncoder<'a, W>where
W: RefUnwindSafe,

impl<'a, W> Send for JPEGEncoder<'a, W>where
W: Send,

impl<'a, W> Sync for JPEGEncoder<'a, W>where
W: Sync,

impl<'a, W> Unpin for JPEGEncoder<'a, W>

impl<'a, W> !UnwindSafe for JPEGEncoder<'a, W>

Blanket Implementations

source

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

source

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

source

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

source

impl<T, U> Into for Twhere
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 = mem::align_of::<T>()

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> SetParameter for T

source

fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Resultwhere
T: Parameter<Self>,

Sets value as a parameter of self.

source

impl<T, U> TryFrom for Twhere
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 Twhere
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 image::jpeg::JPEGEncoder

Implementations

impl<'a, W: Write> JPEGEncoder<'a, W>

pub fn new(w: &mut W) -> JPEGEncoder<'_, W>

pub fn new_with_quality(w: &mut W, quality: u8) -> JPEGEncoder<'_, W>

pub fn encode(
    &mut self,
    image: &[u8],
    width: u32,
    height: u32,
    c: ColorType
) -> Result<()>

Auto Trait Implementations

impl<'a, W> RefUnwindSafe for JPEGEncoder<'a, W>where
W: RefUnwindSafe,

impl<'a, W> Send for JPEGEncoder<'a, W>where
W: Send,

impl<'a, W> Sync for JPEGEncoder<'a, W>where
W: Sync,

impl<'a, W> Unpin for JPEGEncoder<'a, W>

impl<'a, W> !UnwindSafe for JPEGEncoder<'a, W>

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere
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 Twhere
U: From<T>,

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

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> SetParameter for T

fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Resultwhere
T: Parameter<Self>,

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

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

type Error = <U as TryFrom<T>>::Error

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

Struct image::jpeg::JPEGEncoder

Implementations

impl<'a, W: Write> JPEGEncoder<'a, W>

pub fn new(w: &mut W) -> JPEGEncoder<'_, W>

pub fn new_with_quality(w: &mut W, quality: u8) -> JPEGEncoder<'_, W>

pub fn encode( &mut self, image: &[u8], width: u32, height: u32, c: ColorType) -> Result<()>

Auto Trait Implementations

impl<'a, W> RefUnwindSafe for JPEGEncoder<'a, W>where W: RefUnwindSafe,

impl<'a, W> Send for JPEGEncoder<'a, W>where W: Send,

impl<'a, W> Sync for JPEGEncoder<'a, W>where W: Sync,

impl<'a, W> Unpin for JPEGEncoder<'a, W>

impl<'a, W> !UnwindSafe for JPEGEncoder<'a, W>

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere 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 Twhere U: From<T>,

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

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> SetParameter for T

fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Resultwhere T: Parameter<Self>,

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

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

type Error = <U as TryFrom<T>>::Error

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

pub fn encode(
&mut self,
image: &[u8],
width: u32,
height: u32,
c: ColorType
) -> Result<()>

impl<'a, W> RefUnwindSafe for JPEGEncoder<'a, W>where
W: RefUnwindSafe,

impl<'a, W> Send for JPEGEncoder<'a, W>where
W: Send,

impl<'a, W> Sync for JPEGEncoder<'a, W>where
W: Sync,

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

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

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

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

fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Resultwhere
T: Parameter<Self>,

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

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