Streaming Android camera preview into Unity (without WebCamTexture or plugins)

Hi! I am searching for performant ways of streaming camera previews into Unity. Can you recommend anything? I need access to the camera stream from the Java side, I cannot use the WebCamTexture API or plugins like NatDevice.

Ideally I would like to use the AndroidX API to make use of either the Preview or the ImageAnalysis use cases and then stream them to Unity.

Of course I do not expect anything specific. Any suggesting into the right direction would me more than welcome.