pub type OnVideoFrameCallbackType = extern "C" fn(RefAny, CallbackInfo, VideoFrame) -> Update;Expand description
User hook fired once per captured/decoded frame - the backreference
dependency-injection pattern (see architecture.md). A capture widget’s
private writeback invokes it with each VideoFrame, so application code
can apply effects, save the frame into its own data model, or send it over
the network (azul-meet). Returns Update like any callback. Wired via
CameraWidget::with_on_frame / ScreenCaptureWidget::with_on_frame /
VideoWidget::with_on_frame.