Stream audio from PC to Android

Question

Android

Good day!
The question arose sharply with the definition of the topic of the graduation project (bachelor). For no reason at all, they said that in a week it was necessary to decide ...
I thought about the topic for a long time, but I didn’t single out anything specific. However, it is difficult to generate ideas :) Actually, I wanted not just some banal research topic, but to develop some interesting (and even better - useful) application and, possibly, with some preliminary research part. My interests lie mostly in the field of network technologies and a little less in the field of neural networks. Languages: C/C++/Qt.
I didn’t find anything more worthwhile than writing an application that I once thought about for a long time. Actually, the essence of the application should be to transfer sound from the PC (ie system sounds, running audio or video, etc.) to the Android phone. When I asked this question (1.5-2 years ago), there were no ready-made implementations yet, now there is an application https://play.google.com/store/apps/details?id=com.... - I would like to write something like this.
Because I did not program for Android, we will discard this part. I am interested in the question, how to capture an audio stream on a computer using C / C ++ and transmit it over a wireless interface? As I understand it, this should somehow be done through WinAPI, intercepting the audio stream from the output of the sound card? If there is any ready-made open source solution to this problem - that's even better!
Thank you all in advance for your feedback!

Answer 1

vlc can stream, its code is open, this is about capturing.

Answer 2

You need some kind of multimedia library, alternatively DirectShow, Media Foundation (windows only) or SDL (cross-platform).