Get the master clock that @clock is slaved to or %NULL when the clock is not slaved to any master clock.
Return: a master #GstClock or %NULL when this clock is not slaved to a master clock. Unref after usage.
MT safe.
See Implementation
Get the master clock that @clock is slaved to or %NULL when the clock is not slaved to any master clock.
Return: a master #GstClock or %NULL when this clock is not slaved to a master clock. Unref after usage.
MT safe.