Add specific functionality to android project

Need an android developer who has a device where google AR depth API is supported (check devices where depth API is supported from https://developers.google.com/ar/devices)

There is a sample project by Google ARCore, which uses depth API to create depth map images
https://github.com/google-ar/arcore-android-sdk/tree/master/samples/hello_ar_java
In this app, there is a functionality to view camera image as well as depth map of the scene in real time. Check from this link regarding depth maps - (https://developers.google.com/ar/develop/java/depth/quickstart)

I need following tweak to this above application:

Need Voice based input to capture and save camera and depth map images - I should say "GO" and the app should take a pic of current scene as <timestamp>.png and save the depth map image as <timestamp>-depth.png