feat: read inverted datamatrix

[petri-lipponen-movesense]

Here's a quick stab at adding support for reading inverted data matrixes that the MLKit does not support. The iOS implementation is a bit clumsy (I'm not an iOS coder), but Android one is quite straight forward. Tested and works in Android & iOS. Feel free to modify, include or leave be as you will.

Future idea: add "tryInverted" which duplicates each frame and tries normal and inverted both.

[navaronbracke]

Interesting. Did you manage to do some performance profiling on this? Inverting each frame might be expensive to do (I think). A bit sad we have to pull in opencv for this to work

[petri-lipponen-movesense]

Interesting. Did you manage to do some performance profiling on this? Inverting each frame might be expensive to do (I think). A bit sad we have to pull in opencv for this to work

No I didn't. We need it so short time, that it really makes no difference, and it didn't feel slow on phones tested.
I agree, it really is a bummer that the opencv is needed. There has to be better way to do it on both systems, but I just needed something that works with minimum effort and those came up on stackoverflow 😁 .

[RafaRuiz]

I remember doing this for a client of mine, on a native solution, I had to use opencv too.

[RafaRuiz]

After creating #1214 to enhance your PR, on Android I've seen that the inverted image is shrink, I'm working on fixing it on my branch and I will create a PR on yours as well @petri-lipponen-movesense