If @ref JackPortCanMonitor is set for a port, this function turns on input monitoring if it was off, and turns it off if only one request has been made to turn it on. Otherwise it does nothing.
@return 0 on success, otherwise a non-zero error code
See Implementation
If @ref JackPortCanMonitor is set for a port, this function turns on input monitoring if it was off, and turns it off if only one request has been made to turn it on. Otherwise it does nothing.
@return 0 on success, otherwise a non-zero error code