Struct Codec 

pub struct Codec { /* private fields */ }

Codec is an opened image whose frames are decoded one at a time, on request.

It is the shape of Flutter’s ui.Codec: a still image is a codec with one frame, so a caller need not know in advance which it holds. Dropping the codec releases the decoder’s state.

Implementations

impl Codec

pub fn info(&self) -> ImageInfo

info is the frame size, frame count and repetition fixed when the image was opened.

pub fn next_frame(&mut self) -> Pending<'_, Frame>

next_frame decodes the next frame, wrapping to the first after the last.

The frame borrows the codec until it arrives, so one codec decodes one frame at a time and a second request cannot be made while the first is in flight.

Trait Implementations

impl Debug for Codec

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

Formats the value using the given formatter.