🖼️ qoi-rs

Rust implementation of the QOI (Quite OK) Image Format following the File Format Specifications.

Usage

Build with cargo build. Run with cargo run or with the executable generated from the build.

./qoi-rs <action - encode/decode> <input file> <width> <height> <channels (3/4)>

(NOTE: When decoding, only the input file argument matters. width, height, and channels can be arbitrary).

Generate test images

To turn a png into a raw image, use qoiconv.c from the reference implementation, but add these lines to the last conditions that check the file format:

} else if (STR_ENDS_WITH(argv[2], ".raw")) {
    FILE* fp = fopen(argv[2], "wb");
    fwrite(pixels, w * h * channels, 1, fp);
    fclose(fp);
    encoded = 1;
}