Also rename `calculate_timestamp()` to `to_monotonic()` and `from_monotonic()` which better describe what it does. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6532>
Also rename `calculate_timestamp()` to `to_monotonic()` and `from_monotonic()` which better describe what it does. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6532>