getBlobSizeAsync function
Implementation
Future<Scalar> getBlobSizeAsync(Mat blob) async {
final rval = cvRunAsync<Scalar>(
(callback) => cffi.Net_GetBlobSize_Async(blob.ref, callback),
(c, result) => c.complete(Scalar.fromPointer(result.cast<cvg.Scalar>())),
);
return rval;
}