a475c93346
When doing only a single stream of audio/video this hardly matters, but when doing many at the same time, the fact that you have to get a hold of the glib global type-system lock every time you process a buffer, means that there is a limit to how many streams you can process in parallel. Luckily the fix is very simple, by doing a cast rather than a full type-check. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1873>