Function decode

src/decoder/decoder.ts:327–345

(matrix: BitMatrix)

}

export function decode(matrix: BitMatrix): DecodedQR {
  if (matrix == null) {
    return null;
  }
  const result = decodeMatrix(matrix);
  if (result) {
    return result;
  }
  // Decoding didn't work, try mirroring the QR across the topLeft -> bottomRight line.
  for (let x = 0; x < matrix.width; x++) {
    for (let y = x + 1; y < matrix.height; y++) {
      if (matrix.get(x, y) !== matrix.get(y, x)) {
        matrix.set(x, y, !matrix.get(x, y));
        matrix.set(y, x, !matrix.get(y, x));
      }
    }
  }
  return decodeMatrix(matrix);
}