@ankhzet/goo/dist/cjs/rle/rleEncode.js

Elegoo .goo file format reader/writer

import { encoder } from './encoder.js';
export const rleEncode = (buffer, channels) => {
    let offset = 0;
    let total = buffer.length;
    const { encode, flush } = encoder();
    let pixel = buffer.readUint8(0);
    let length = 0;
    let diff = 0;
    let byte = 0;
    while (offset <= total) {
        if (offset < total) {
            byte = buffer.readUint8(offset);
            offset += channels;
            if (byte === pixel) {
                length++;
                continue;
            }
        }
        else {
            offset++;
        }
        encode(pixel, length, diff);
        pixel = byte;
        length = 1;
        diff = byte - pixel;
    }
    return flush();
};