DEFAULT_CAN_ACTIVATE_PULL  661 libs/gst/base/gstbasesink.c   basesink->can_activate_pull = DEFAULT_CAN_ACTIVATE_PULL;
DEFAULT_CAN_ACTIVATE_PULL  215 plugins/elements/gstfakesink.c           "Can activate in pull mode", DEFAULT_CAN_ACTIVATE_PULL,
DEFAULT_CAN_ACTIVATE_PULL  348 plugins/elements/gstfakesrc.c           "Can activate in pull mode", DEFAULT_CAN_ACTIVATE_PULL,