A no_std GIF library for embedded applications(embedded-graphics)

Andelf

Last update: Jun 15, 2023

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Overview

tinygif

A tiny gif decoder written in no_std Rust. This crate requires about 20kB of memory to decode a gif.

basic decoding
frame iterator
interlace support
fails on some highly compressed gifs: Change table size in DecodingDict

Usage

let image = tinygif::Gif::<Rgb565>::from_slice(include_bytes!("../small.gif")).unwrap();
loop {
    for frame in image.frames() {
        info!("frame {:?}", frame);

        frame.draw(&mut display).unwrap();

        let delay_ms = frame.delay_centis * 10;
        info!("delay {}", delay_ms);
        // Delay here
        // Timer::after(Duration::from_millis(delay_ms as u64)).await;


        // Or, draw at given offset
        // (use embedded_graphics::prelude::DrawTargetExt;)
        frame.draw(&mut display.translated(Point::new(30, 50))).unwrap();
    }
}

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Comments

Nyan Cat Demo

https://github.com/andelf/tinygif/assets/72891/80841ed6-eff5-4f76-8265-9b09ba76ff9f

let image = tinygif::Gif::<Rgb565>::from_slice(include_bytes!("../../cat.gif")).unwrap();
loop {
    for frame in image.frames() {
        let start = Instant::now();
        frame.draw(&mut display.translated(Point::new(10, 80))).unwrap();
        let elapsed = start.elapsed().as_millis();
        info!("draw {}ms", elapsed);

        let delay_ms = (frame.delay_centis * 10) as u64;
        info!("delay {}", delay_ms);
        if delay_ms > elapsed {
            Timer::after(Duration::from_millis((delay_ms - elapsed) as u64)).await;
        }
    }
}

opened by andelf 0