Is it possible to change the system camera?

Question

Android

Good time.
There is a third party app that uses the camera. The problem is that the camera captures the full image, which makes it difficult to work.
Is it possible to affect the camera of this application in such a way that it captures only a certain part of the image (as in the example below)? Any options will do, even if you have to break the system camera, it is very important to find out how this can be done in principle)

Answer 1

everything is elementary.
you take the source codes of the firmware for your telepon.
you find the camera driver in them, change them in such a way that only part of the image is given.
you compile the driver, you replace it through the root in the telepon.
....
profit !!