- if (!_pi->strict_io () && ppc.size () == 1) {
- need_dropdown = false;
- }
-
- if (_pi->strict_io () && ppc.size () == 1) {
- // "stereo" is currently preferred default for instruments, see PluginInsert
- if (ppc.find (2) != ppc.end ()) {
- need_dropdown = false;
- }
- }
-
- if (!_pi->needs_midi_input ()) {
- /* loose definition of instruments, maybe impose additional
- * || _pi->natural_input_streams ().n_audio () != 0
- * and special case variable output plugins
- * && !_pi->plugin (0)->info->reconfigurable_io()
- */
- need_dropdown = false;
- }