I want to use my raspberry pi 4 with hifiberry dac and adc as a usb audio interface for my android phone so that I can stream audio and make handsfree calls in my car. I'm having trouble finding information on how to set this up or even the proper terminology for this configuration. From what I understand, I need to configure the raspberry pi 4's usb c port as a usb gadget and use uac2 drivers to make the pi act as a usb audio interface.
ps. I do not want to use bluetooth as this is a hifi system and bluetooth is not capable of streaming audio at a sufficient bitrate.