This fixes a bug where an update of the parent source breaks the filter.
A signal handler is added to listen to updates of the parent.
This triggers a reset of the RTX FX.
Signed-off-by: pkv <pkv@obsproject.com>
This adds support for RTX video Effects SDK.
The Background Removal filter relies on NVIDIA RTX AI Greenscreen FX.
A front speaker is separated from a background by applying
an alpha mask computed by AI.
Signed-off-by: pkv <pkv@obsproject.com>