midictl_read
setting = midictl_read(&ms->ctl, chan, MIDI_CTRL_PAN_MSB, 8192);
midictl_read(midictl *, uint_fast8_t, uint_fast8_t, uint_fast16_t);
midictl_read(&ms->ctl, chan, key, 100<<7));
midictl_read(&ms->ctl, chan, key, 16383));