FunctionCaptureSource

A source backed by a plain grab function.

In the namespace opal::vision. Declared in src/libs/libopal/opal/vision/CaptureSource.hpp.

Detailed description

This is what the app window is: OpalChatOverlay already installs a capture function that grabs the whole window, in both hub and construct (§OVR-6). Registering it needs no new mechanism, only an adapter.

It declares no camera capability. A window has no camera to place.