Android-webrtc Stream data from a source other than the camera directly to webbrowser

Question

UseCase - I use the Android Projection API to capture the screen of my Android device. The output is displayed in SurfaceView. Then I want to project surface data into a web browser using Webrtc.

I saw many examples that use the device’s camera and the stream that it displays in a web browser. how can I transfer video played on the surface of a View / TextureView to a web browser.