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export function scanlines(
mid: Uint8Array,
pSize: number,
sizes: [number, number][],
): Uint8Array[][] {
const images: Uint8Array[][] = new Array(sizes.length)
.fill(0)
.map(() => []);
let i = 0;
let offset = 0;
for (const [width, height] of sizes) {
for (let h = 0; h < height; ++h) {
images[i][h] = mid.subarray(
offset + h * (width * pSize + 1),
offset + (h + 1) * (width * pSize + 1),
);
}
offset += height * (width * pSize + 1);
++i;
}
return images;
}
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