Sets the given activate function for pad. The activate function will
dispatch to gst_pad_activate_push() or gst_pad_activate_pull() to perform
the actual activation. Only makes sense to set on sink pads.
Call this function if your sink pad can start a pull-based task.
Sets the given activate function for pad. The activate function will dispatch to gst_pad_activate_push() or gst_pad_activate_pull() to perform the actual activation. Only makes sense to set on sink pads. Call this function if your sink pad can start a pull-based task.