 bitmap. Values range from
 0 (black) to 255 (white). Because Java does not have an unsigned byte type, callers will have
 to bitwise and with 0xff for each value. It is preferable for implementations of this method
 to only fetch this row rather than the whole image, since no 2D Readers may be installed and
 getMatrix() may never be called.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../com/google/zxing/LuminanceSource.html#getRow-int-byte:A-">getRow