scan
open override fun scanInArea(nv21: ByteArray, width: Int, height: Int, frameOrientation: Int, areaRect: Rect?): DocumentDetectionResult?
Decode the nv21 within the finder rectangle, and time how long it took.
Parameters
nv21
The YUV preview frame.
width
The width of the preview frame.
height
The height of the preview frame.
area
decode area
frame
The frame orientation degrees.