Injecting image while using camera within the mobile application.

[swalke12]

I have a mobile app which uses camera to click the images of a car. There is no upload from gallery option. I want to know if there is way to provide/inject image into my mobile application which will show up whenever I open the camera within my application through mobile automation ? I am using appium 2 and android-python-client 4.0.0 . Please help.