Read from “output” as from “input”

Question

Some on of you saw this.

So the question is, how to access mobile audio out in read mode?

Thank you!

Answer 1

That's fundamentally impossible, at least from the level of a software application (it could be possible in hardware or even firmware). That device works by taking advantage of the microphone jack included in the headphone jack. The hardware communicates with the application via an audio signal that is read from the microphone input.