IOS Real Device: How to provide mock images for testing application that read camera images?

The problem
Can I get the current running camera instance and and give a particular file as input in IOS Real Device
Is this possible with appium ?
Please Advise

More Details:
I am trying to feed my camera an image during runtime. So basically my application has a feature: search a product by scanning a barcode, Since I am trying to automate this, I want to provide an image with barcode and have camera take that image while scanning.

Appium version: 1.3.2
Desktop OS/version used to run Appium: MAC OS High Sierra (10.13.4)
Mobile platform/version under test: iPhone 8 Plus, OS 11.3
Real device or emulator/simulator: REAL DEVICE
Please Advise