Struct image::webp::WebPDecoder
source · [−]pub struct WebPDecoder<R> { /* private fields */ }Expand description
WebP Image format decoder. Currently only supportes the luma channel (meaning that decoded images will be grayscale).
Implementations
sourceimpl<R: Read> WebPDecoder<R>
impl<R: Read> WebPDecoder<R>
sourcepub fn new(r: R) -> ImageResult<WebPDecoder<R>>
pub fn new(r: R) -> ImageResult<WebPDecoder<R>>
Create a new WebPDecoder from the Reader r.
This function takes ownership of the Reader.
Trait Implementations
sourceimpl<'a, R: 'a + Read> ImageDecoder<'a> for WebPDecoder<R>
impl<'a, R: 'a + Read> ImageDecoder<'a> for WebPDecoder<R>
type Reader = WebpReader<R>
type Reader = WebpReader<R>
The type of reader produced by into_reader.
sourcefn dimensions(&self) -> (u32, u32)
fn dimensions(&self) -> (u32, u32)
Returns a tuple containing the width and height of the image
sourcefn color_type(&self) -> ColorType
fn color_type(&self) -> ColorType
Returns the color type of the image data produced by this decoder
sourcefn into_reader(self) -> ImageResult<Self::Reader>
fn into_reader(self) -> ImageResult<Self::Reader>
Returns a reader that can be used to obtain the bytes of the image. For the best
performance, always try to read at least scanline_bytes from the reader at a time. Reading
fewer bytes will cause the reader to perform internal buffering. Read more
sourcefn read_image(self, buf: &mut [u8]) -> ImageResult<()>
fn read_image(self, buf: &mut [u8]) -> ImageResult<()>
Returns all the bytes in the image. Read more
sourcefn original_color_type(&self) -> ExtendedColorType
fn original_color_type(&self) -> ExtendedColorType
Retuns the color type of the image file before decoding
sourcefn total_bytes(&self) -> u64
fn total_bytes(&self) -> u64
Returns the total number of bytes in the decoded image. Read more
sourcefn scanline_bytes(&self) -> u64
fn scanline_bytes(&self) -> u64
Returns the minimum number of bytes that can be efficiently read from this decoder. This may
be as few as 1 or as many as total_bytes(). Read more
sourcefn read_image_with_progress<F: Fn(Progress)>(
self,
buf: &mut [u8],
progress_callback: F
) -> ImageResult<()>
fn read_image_with_progress<F: Fn(Progress)>(
self,
buf: &mut [u8],
progress_callback: F
) -> ImageResult<()>
Same as read_image but periodically calls the provided callback to give updates on loading
progress. Read more
Auto Trait Implementations
impl<R> RefUnwindSafe for WebPDecoder<R> where
R: RefUnwindSafe,
impl<R> Send for WebPDecoder<R> where
R: Send,
impl<R> Sync for WebPDecoder<R> where
R: Sync,
impl<R> Unpin for WebPDecoder<R> where
R: Unpin,
impl<R> UnwindSafe for WebPDecoder<R> where
R: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more