qoi/fuzz/fuzz_targets/qoi_encode.rs
2022-01-03 14:25:40 +03:00

23 lines
722 B
Rust

#![no_main]
use libfuzzer_sys::fuzz_target;
fuzz_target!(|input: (bool, u8, &[u8])| {
let (is_4, w_frac, data) = input;
let channels = if is_4 { 4 } else { 3 };
let size = data.len();
let n_pixels = size / channels as usize;
let (w, h) = if n_pixels == 0 {
(0, 0)
} else {
let w = ((n_pixels * (1 + w_frac as usize)) / 256).max(1);
let h = n_pixels / w;
(w, h)
};
let out = qoi_fast::qoi_encode_to_vec(&data[..(w * h * channels as usize)], w as u32, h as u32);
if w * h != 0 {
let out = out.unwrap();
assert!(out.len() <= qoi_fast::encoded_size_limit(w as u32, h as u32, channels));
} else {
assert!(out.is_err());
}
});