Towards a new disk-reader ringbuffer

[ardour.git] / gtk2_ardour / engine_dialog.cc

diff --git a/gtk2_ardour/engine_dialog.cc b/gtk2_ardour/engine_dialog.cc
index b883bc352eff867632dac493e9854334ac4401ec..bc378afebe91e96365dfdf6146680fca0b1b4270 100644 (file)
--- a/gtk2_ardour/engine_dialog.cc
+++ b/gtk2_ardour/engine_dialog.cc
@@ -902,6 +902,18 @@ EngineControl::midi_latency_adjustment_changed (Gtk::Adjustment *a, MidiDeviceSe
        } else {
                device->output_latency = a->get_value();
        }
+
+       if (ARDOUR::AudioEngine::instance()->running() && !_measure_midi) {
+               boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+               assert (backend);
+               if (backend->can_change_systemic_latency_when_running () && device->enabled) {
+                       if (for_input) {
+                               backend->set_systemic_midi_input_latency (device->name, device->input_latency);
+                       } else {
+                               backend->set_systemic_midi_output_latency (device->name, device->output_latency);
+                       }
+               }
+       }
 }
 
 void
@@ -909,6 +921,16 @@ EngineControl::midi_device_enabled_toggled (ArdourButton *b, MidiDeviceSettings
        b->set_active (!b->get_active());
        device->enabled = b->get_active();
        refresh_midi_display(device->name);
+
+       if (ARDOUR::AudioEngine::instance()->running()) {
+               boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+               assert (backend);
+               backend->set_midi_device_enabled (device->name, device->enabled);
+               if (backend->can_change_systemic_latency_when_running () && device->enabled) {
+                       backend->set_systemic_midi_input_latency (device->name, device->input_latency);
+                       backend->set_systemic_midi_output_latency (device->name, device->output_latency);
+               }
+       }
 }
 
 void
@@ -3101,7 +3123,16 @@ EngineControl::device_list_changed ()
        if (!ARDOUR::AudioEngine::instance()->running()) {
                list_devices ();
        }
+
        midi_option_changed();
+
+       if (notebook.get_current_page() == midi_tab) {
+               if (_midi_devices.empty ()) {
+                       notebook.set_current_page (0);
+               } else {
+                       refresh_midi_display ();
+               }
+       }
 }
 
 void