ab6aafb076
It creates a new structure for passing the codec quality structure at _start(), where it will be filled. The quality level can be set or changed according encoder limits. Later the quality level will be set at _update_session_parameters() and at each frame encoding. That's why it has to be set at _start(). Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8007>