blush

import { encode as nativeEncode } from "blurhash";

export function encode(
  pixels_as_list,
  width,
  height,
  components_x,
  components_y,
) {
  // Convert rgb -> rgba which is required by the wolt's implementation
  const pixels = pixels_as_list.toArray();
  const convertedPixels = new Uint8ClampedArray((pixels.length / 3) * 4);

  for (let i = 0; i < pixels.length; i += 3) {
    convertedPixels[i + 0] = pixels[i + 0];
    convertedPixels[i + 1] = pixels[i + 1];
    convertedPixels[i + 2] = pixels[i + 2];
    convertedPixels[i + 3] = 255;
  }

  return nativeEncode(
    convertedPixels,
    width,
    height,
    components_x,
    components_y,
  );
}