1 unstable release
0.1.2 | Nov 5, 2021 |
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#1700 in Algorithms
86KB
263 lines
blurhash-rs
A pure Rust implementation of Blurhash.
Blurhash is an algorithm written by Dag Ågren for Wolt (woltapp/blurhash) that encodes an image into a short (~20-30 byte) ASCII string. When you decode the string back into an image, you get a gradient of colors that represent the original image. This can be useful for scenarios where you want an image placeholder before loading, or even to censor the contents of an image a la Mastodon.
🚴 Usage
Add blurhash
to your Cargo.toml
:
[dependencies]
blurhash = "0.1.1"
Encoding
use blurhash::encode;
use image::GenericImageView;
fn main() {
// Add image to your Cargo.toml
let img = image::open("octocat.png").unwrap();
let (width, height) = img.dimensions();
let blurhash = encode(4, 3, width, height, &img.to_rgba().into_vec());
}
Decoding
use blurhash::decode;
let pixels = decode("LBAdAqof00WCqZj[PDay0.WB}pof", 50, 50, 1.0);
Licence
Licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)