n will cause <a href="../../../org/libjpegturbo/turbojpeg/TJTransformer.html#transform(byte[][],%20org.libjpegturbo.turbojpeg.TJTransform[],%20int)"><code>TJTransformer.transform()</code></a> to throw an exception if the transform is not
 perfect.  Lossless transforms operate on MCU blocks, whose size depends on
 the level of chrominance subsampling used.  If the image's width or height
 is not evenly divisible by the MCU block size (see <a href="../../../org/libjpegturbo/turbojpeg/TJ.html#getMCUWidth(int)"