addAsync function
Add calculates the per-element sum of two arrays or an array and a scalar.
For further details, please see: https://docs.opencv.org/master/d2/de8/group__core__array.html#ga10ac1bfb180e2cfda1701d06c24fdbd6
Implementation
Future<Mat> addAsync(Mat src1, Mat src2, {Mat? mask, int dtype = -1}) async => cvRunAsync(
(callback) => cffi.core_Add_Async(src1.ref, src2.ref, mask?.ref ?? Mat.empty().ref, dtype, callback),
matCompleter,
);