blurhash_fast/
lib.rs

1//! A pure Rust implementation of [woltapp/blurhash][1].
2//!
3//! ### Encoding
4//!
5//! ```
6//! use blurhash::encode;
7//! use image::{GenericImageView, EncodableLayout};
8//!
9//! let img = image::open("octocat.png").unwrap();
10//! let (width, height) = img.dimensions();
11//! let blurhash = encode(4, 3, width, height, img.to_rgba().as_bytes()).unwrap();
12//!
13//! assert_eq!(blurhash, "LBAdAqof00WCqZj[PDay0.WB}pof");
14//! ```
15//!
16//! ### Decoding
17//!
18//! ```no_run
19//! use blurhash::decode;
20//!
21//! let pixels = decode("LBAdAqof00WCqZj[PDay0.WB}pof", 50, 50, 1.0);
22//! ```
23//! [1]: https://github.com/woltapp/blurhash
24
25pub use decode::decode;
26pub use encode::encode;
27pub use error::Error;
28
29mod alternating_current;
30mod base83;
31mod direct_current;
32mod error;
33mod util;
34mod encode;
35mod decode;
36
37#[cfg(test)]
38mod tests {
39    use image::{ColorType::Rgba8, save_buffer};
40    use image::{EncodableLayout, GenericImageView};
41
42    use super::{decode, encode};
43
44    #[test]
45    fn decode_blurhash() {
46        let img = image::open("octocat.png").unwrap();
47        let (width, height) = img.dimensions();
48
49        let blurhash =
50            encode(
51                4,
52                3,
53                width,
54                height,
55                img
56                    .to_rgba8()
57                    .as_bytes(),
58            ).unwrap();
59
60        let img =
61            decode(
62                &blurhash,
63                width,
64                height,
65                1.0,
66            ).unwrap();
67
68        save_buffer(
69            "out.png",
70            &img,
71            width,
72            height,
73            Rgba8,
74        ).unwrap();
75
76        assert_eq!(img[0..5], [45, 1, 56, 255, 45]);
77    }
78}
blurhash_fast/lib.rs

blurhash_fast/
lib.rs
