We are developing a “image editor” app using Flutter. Thus, we need to (1) show images on the UI, and (2) manipulate images using some algorithms in C/C++.
Flutter does have a FFI between dart and c/c++, but I do not know how to pass big arrays like images (e.g. can be megabytes) efficiently?
Thanks very much!
After experiments, now I have some code (in the production code!) passing around array of 20MB size between C and Dart. It only takes several milliseconds (just a rough estimation, but surely it does not take seconds).
Thus, my answer to my question is: Just do it. Memory copies seems to be quite cheap, and do not worry about it 🙂
Answered By – ch271828n
Answer Checked By – Willingham (FlutterFixes Volunteer)