+void
+EngineControl::midi_option_changed ()
+{
+ boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+ assert (backend);
+
+ backend->set_midi_option (get_midi_option());
+
+ vector<ARDOUR::AudioBackend::DeviceStatus> midi_devices = backend->enumerate_midi_devices();
+
+ //_midi_devices.clear(); // TODO merge with state-saved settings..
+ _can_set_midi_latencies = backend->can_set_systemic_midi_latencies();
+ std::vector<MidiDeviceSettings> new_devices;
+
+ for (vector<ARDOUR::AudioBackend::DeviceStatus>::const_iterator i = midi_devices.begin(); i != midi_devices.end(); ++i) {
+ MidiDeviceSettings mds = find_midi_device (i->name);
+ if (i->available && !mds) {
+ uint32_t input_latency = 0;
+ uint32_t output_latency = 0;
+ if (_can_set_midi_latencies) {
+ input_latency = backend->systemic_midi_input_latency (i->name);
+ output_latency = backend->systemic_midi_output_latency (i->name);
+ }
+ bool enabled = backend->midi_device_enabled (i->name);
+ MidiDeviceSettings ptr (new MidiDeviceSetting (i->name, enabled, input_latency, output_latency));
+ new_devices.push_back (ptr);
+ } else if (i->available) {
+ new_devices.push_back (mds);
+ }
+ }
+ _midi_devices = new_devices;
+
+ if (_midi_devices.empty()) {
+ midi_devices_button.set_sensitive (false);
+ } else {
+ midi_devices_button.set_sensitive (true);
+ }
+
+ if (!ignore_changes) {
+ save_state ();
+ }
+}
+
+void
+EngineControl::parameter_changed ()
+{
+ if (!ignore_changes) {
+ save_state ();
+ }
+}
+
+EngineControl::State
+EngineControl::get_matching_state (
+ const string& backend,
+ const string& driver,
+ const string& device)
+{
+ for (StateList::iterator i = states.begin(); i != states.end(); ++i) {
+ if ((*i)->backend == backend &&
+ (!_have_control || ((*i)->driver == driver && (*i)->device == device)))
+ {
+ return (*i);
+ }
+ }
+ return State();
+}
+
+EngineControl::State
+EngineControl::get_saved_state_for_currently_displayed_backend_and_device ()
+{
+ boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+
+ if (backend) {
+ return get_matching_state (backend_combo.get_active_text(),
+ (backend->requires_driver_selection() ? (std::string) driver_combo.get_active_text() : string()),
+ device_combo.get_active_text());
+ }
+
+
+ return get_matching_state (backend_combo.get_active_text(),
+ string(),
+ device_combo.get_active_text());
+}
+
+EngineControl::State
+EngineControl::save_state ()
+{
+ State state;
+
+ if (!_have_control) {
+ state = get_matching_state (backend_combo.get_active_text(), string(), string());
+ if (state) {
+ return state;
+ }
+ state.reset(new StateStruct);
+ state->backend = get_backend ();
+ } else {
+ state.reset(new StateStruct);
+ store_state (state);
+ }
+
+ for (StateList::iterator i = states.begin(); i != states.end();) {
+ if ((*i)->backend == state->backend &&
+ (*i)->driver == state->driver &&
+ (*i)->device == state->device) {
+ i = states.erase(i);
+ } else {
+ ++i;
+ }
+ }
+
+ states.push_back (state);
+
+ return state;
+}
+
+void
+EngineControl::store_state (State state)
+{
+ state->backend = get_backend ();
+ state->driver = get_driver ();
+ state->device = get_device_name ();
+ state->sample_rate = get_rate ();
+ state->buffer_size = get_buffer_size ();
+ state->input_latency = get_input_latency ();
+ state->output_latency = get_output_latency ();
+ state->input_channels = get_input_channels ();
+ state->output_channels = get_output_channels ();
+ state->midi_option = get_midi_option ();
+ state->midi_devices = _midi_devices;
+}
+
+void
+EngineControl::maybe_display_saved_state ()
+{
+ if (!_have_control) {
+ return;
+ }
+
+ State state = get_saved_state_for_currently_displayed_backend_and_device ();
+
+ if (state) {
+ PBD::Unwinder<uint32_t> protect_ignore_changes (ignore_changes, ignore_changes + 1);
+
+ if (!_desired_sample_rate) {
+ sample_rate_combo.set_active_text (rate_as_string (state->sample_rate));
+ }
+ buffer_size_combo.set_active_text (bufsize_as_string (state->buffer_size));
+ /* call this explicitly because we're ignoring changes to
+ the controls at this point.
+ */
+ show_buffer_duration ();
+ input_latency.set_value (state->input_latency);
+ output_latency.set_value (state->output_latency);
+
+ if (!state->midi_option.empty()) {
+ midi_option_combo.set_active_text (state->midi_option);
+ _midi_devices = state->midi_devices;
+ }
+ }
+}
+
+XMLNode&
+EngineControl::get_state ()
+{
+ XMLNode* root = new XMLNode ("AudioMIDISetup");
+ std::string path;
+
+ if (!states.empty()) {
+ XMLNode* state_nodes = new XMLNode ("EngineStates");
+
+ for (StateList::const_iterator i = states.begin(); i != states.end(); ++i) {
+
+ XMLNode* node = new XMLNode ("State");
+
+ node->add_property ("backend", (*i)->backend);
+ node->add_property ("driver", (*i)->driver);
+ node->add_property ("device", (*i)->device);
+ node->add_property ("sample-rate", (*i)->sample_rate);
+ node->add_property ("buffer-size", (*i)->buffer_size);
+ node->add_property ("input-latency", (*i)->input_latency);
+ node->add_property ("output-latency", (*i)->output_latency);
+ node->add_property ("input-channels", (*i)->input_channels);
+ node->add_property ("output-channels", (*i)->output_channels);
+ node->add_property ("active", (*i)->active ? "yes" : "no");
+ node->add_property ("midi-option", (*i)->midi_option);
+
+ XMLNode* midi_devices = new XMLNode ("MIDIDevices");
+ for (std::vector<MidiDeviceSettings>::const_iterator p = (*i)->midi_devices.begin(); p != (*i)->midi_devices.end(); ++p) {
+ XMLNode* midi_device_stuff = new XMLNode ("MIDIDevice");
+ midi_device_stuff->add_property (X_("name"), (*p)->name);
+ midi_device_stuff->add_property (X_("enabled"), (*p)->enabled);
+ midi_device_stuff->add_property (X_("input-latency"), (*p)->input_latency);
+ midi_device_stuff->add_property (X_("output-latency"), (*p)->output_latency);
+ midi_devices->add_child_nocopy (*midi_device_stuff);
+ }
+ node->add_child_nocopy (*midi_devices);
+
+ state_nodes->add_child_nocopy (*node);
+ }
+
+ root->add_child_nocopy (*state_nodes);
+ }
+
+ return *root;
+}
+
+void
+EngineControl::set_state (const XMLNode& root)
+{
+ XMLNodeList clist, cclist;
+ XMLNodeConstIterator citer, cciter;
+ XMLNode* child;
+ XMLNode* grandchild;
+ XMLProperty* prop = NULL;
+
+ if (root.name() != "AudioMIDISetup") {
+ return;
+ }
+
+ clist = root.children();
+
+ states.clear ();
+
+ for (citer = clist.begin(); citer != clist.end(); ++citer) {
+
+ child = *citer;
+
+ if (child->name() != "EngineStates") {
+ continue;
+ }
+
+ cclist = child->children();
+
+ for (cciter = cclist.begin(); cciter != cclist.end(); ++cciter) {
+ State state (new StateStruct);
+
+ grandchild = *cciter;
+
+ if (grandchild->name() != "State") {
+ continue;
+ }
+
+ if ((prop = grandchild->property ("backend")) == 0) {
+ continue;
+ }
+ state->backend = prop->value ();
+
+ if ((prop = grandchild->property ("driver")) == 0) {
+ continue;
+ }
+ state->driver = prop->value ();
+
+ if ((prop = grandchild->property ("device")) == 0) {
+ continue;
+ }
+ state->device = prop->value ();
+
+ if ((prop = grandchild->property ("sample-rate")) == 0) {
+ continue;
+ }
+ state->sample_rate = atof (prop->value ());
+
+ if ((prop = grandchild->property ("buffer-size")) == 0) {
+ continue;
+ }
+ state->buffer_size = atoi (prop->value ());
+
+ if ((prop = grandchild->property ("input-latency")) == 0) {
+ continue;
+ }
+ state->input_latency = atoi (prop->value ());
+
+ if ((prop = grandchild->property ("output-latency")) == 0) {
+ continue;
+ }
+ state->output_latency = atoi (prop->value ());
+
+ if ((prop = grandchild->property ("input-channels")) == 0) {
+ continue;
+ }
+ state->input_channels = atoi (prop->value ());
+
+ if ((prop = grandchild->property ("output-channels")) == 0) {
+ continue;
+ }
+ state->output_channels = atoi (prop->value ());
+
+ if ((prop = grandchild->property ("active")) == 0) {
+ continue;
+ }
+ state->active = string_is_affirmative (prop->value ());
+
+ if ((prop = grandchild->property ("midi-option")) == 0) {
+ continue;
+ }
+ state->midi_option = prop->value ();
+
+ state->midi_devices.clear();
+ XMLNode* midinode;
+ if ((midinode = ARDOUR::find_named_node (*grandchild, "MIDIDevices")) != 0) {
+ const XMLNodeList mnc = midinode->children();
+ for (XMLNodeList::const_iterator n = mnc.begin(); n != mnc.end(); ++n) {
+ if ((*n)->property (X_("name")) == 0
+ || (*n)->property (X_("enabled")) == 0
+ || (*n)->property (X_("input-latency")) == 0
+ || (*n)->property (X_("output-latency")) == 0
+ ) {
+ continue;
+ }
+
+ MidiDeviceSettings ptr (new MidiDeviceSetting(
+ (*n)->property (X_("name"))->value (),
+ string_is_affirmative ((*n)->property (X_("enabled"))->value ()),
+ atoi ((*n)->property (X_("input-latency"))->value ()),
+ atoi ((*n)->property (X_("output-latency"))->value ())
+ ));
+ state->midi_devices.push_back (ptr);
+ }
+ }
+
+#if 1
+ /* remove accumulated duplicates (due to bug in ealier version)
+ * this can be removed again before release
+ */
+ for (StateList::iterator i = states.begin(); i != states.end();) {
+ if ((*i)->backend == state->backend &&
+ (*i)->driver == state->driver &&
+ (*i)->device == state->device) {
+ i = states.erase(i);
+ } else {
+ ++i;
+ }
+ }
+#endif
+
+ states.push_back (state);
+ }
+ }
+
+ /* now see if there was an active state and switch the setup to it */
+
+ // purge states of backend that are not available in this built
+ vector<const ARDOUR::AudioBackendInfo*> backends = ARDOUR::AudioEngine::instance()->available_backends();
+ vector<std::string> backend_names;
+
+ for (vector<const ARDOUR::AudioBackendInfo*>::const_iterator i = backends.begin(); i != backends.end(); ++i) {
+ backend_names.push_back((*i)->name);
+ }
+ for (StateList::iterator i = states.begin(); i != states.end();) {
+ if (std::find(backend_names.begin(), backend_names.end(), (*i)->backend) == backend_names.end()) {
+ i = states.erase(i);
+ } else {
+ ++i;
+ }
+ }
+
+ for (StateList::const_iterator i = states.begin(); i != states.end(); ++i) {
+
+ if ((*i)->active) {
+ ignore_changes++;
+ backend_combo.set_active_text ((*i)->backend);
+ driver_combo.set_active_text ((*i)->driver);
+ device_combo.set_active_text ((*i)->device);
+ sample_rate_combo.set_active_text (rate_as_string ((*i)->sample_rate));
+ buffer_size_combo.set_active_text (bufsize_as_string ((*i)->buffer_size));
+ input_latency.set_value ((*i)->input_latency);
+ output_latency.set_value ((*i)->output_latency);
+ midi_option_combo.set_active_text ((*i)->midi_option);
+ ignore_changes--;
+ break;
+ }
+ }
+}
+
+int
+EngineControl::push_state_to_backend (bool start)
+{
+ boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+
+ if (!backend) {
+ return 0;
+ }
+
+ /* figure out what is going to change */
+
+ bool restart_required = false;
+ bool was_running = ARDOUR::AudioEngine::instance()->running();
+ bool change_driver = false;
+ bool change_device = false;
+ bool change_rate = false;
+ bool change_bufsize = false;
+ bool change_latency = false;
+ bool change_channels = false;
+ bool change_midi = false;
+
+ uint32_t ochan = get_output_channels ();
+ uint32_t ichan = get_input_channels ();
+
+ if (_have_control) {
+
+ if (started_at_least_once) {
+
+ /* we can control the backend */
+
+ if (backend->requires_driver_selection()) {
+ if (get_driver() != backend->driver_name()) {
+ change_driver = true;
+ }
+ }
+
+ if (get_device_name() != backend->device_name()) {
+ change_device = true;
+ }
+
+ if (get_rate() != backend->sample_rate()) {
+ change_rate = true;
+ }
+
+ if (get_buffer_size() != backend->buffer_size()) {
+ change_bufsize = true;
+ }
+
+ if (get_midi_option() != backend->midi_option()) {
+ change_midi = true;
+ }
+
+ /* zero-requested channels means "all available" */
+
+ if (ichan == 0) {
+ ichan = backend->input_channels();
+ }
+
+ if (ochan == 0) {
+ ochan = backend->output_channels();
+ }
+
+ if (ichan != backend->input_channels()) {
+ change_channels = true;
+ }
+
+ if (ochan != backend->output_channels()) {
+ change_channels = true;
+ }
+
+ if (get_input_latency() != backend->systemic_input_latency() ||
+ get_output_latency() != backend->systemic_output_latency()) {
+ change_latency = true;
+ }
+ } else {
+ /* backend never started, so we have to force a group
+ of settings.
+ */
+ change_device = true;
+ if (backend->requires_driver_selection()) {
+ change_driver = true;
+ }
+ change_rate = true;
+ change_bufsize = true;
+ change_channels = true;
+ change_latency = true;
+ change_midi = true;
+ }
+
+ } else {
+
+ /* we have no control over the backend, meaning that we can
+ * only possibly change sample rate and buffer size.
+ */
+
+
+ if (get_rate() != backend->sample_rate()) {
+ change_bufsize = true;
+ }
+
+ if (get_buffer_size() != backend->buffer_size()) {
+ change_bufsize = true;
+ }
+ }
+
+ if (!_have_control) {
+
+ /* We do not have control over the backend, so the best we can
+ * do is try to change the sample rate and/or bufsize and get
+ * out of here.
+ */
+
+ if (change_rate && !backend->can_change_sample_rate_when_running()) {
+ return 1;
+ }
+
+ if (change_bufsize && !backend->can_change_buffer_size_when_running()) {
+ return 1;
+ }
+
+ if (change_rate) {
+ backend->set_sample_rate (get_rate());
+ }
+
+ if (change_bufsize) {
+ backend->set_buffer_size (get_buffer_size());
+ }
+
+ if (start) {
+ if (ARDOUR::AudioEngine::instance()->start ()) {
+ error << string_compose (_("Could not start backend engine %1"), backend->name()) << endmsg;
+ return -1;
+ }
+ }
+
+ post_push ();
+
+ return 0;
+ }
+
+ /* determine if we need to stop the backend before changing parameters */
+
+ if (change_driver || change_device || change_channels || change_latency ||
+ (change_rate && !backend->can_change_sample_rate_when_running()) ||
+ change_midi ||
+ (change_bufsize && !backend->can_change_buffer_size_when_running())) {
+ restart_required = true;
+ } else {
+ restart_required = false;
+ }
+
+ if (was_running) {
+
+ if (!change_driver && !change_device && !change_channels && !change_latency && !change_midi) {
+ /* no changes in any parameters that absolutely require a
+ * restart, so check those that might be changeable without a
+ * restart
+ */
+
+ if (change_rate && !backend->can_change_sample_rate_when_running()) {
+ /* can't do this while running ... */
+ restart_required = true;
+ }
+
+ if (change_bufsize && !backend->can_change_buffer_size_when_running()) {
+ /* can't do this while running ... */
+ restart_required = true;
+ }
+ }
+ }
+
+ if (was_running) {
+ if (restart_required) {
+ if (ARDOUR_UI::instance()->disconnect_from_engine ()) {
+ return -1;
+ }
+ }
+ }
+
+
+ if (change_driver && backend->set_driver (get_driver())) {
+ error << string_compose (_("Cannot set driver to %1"), get_driver()) << endmsg;
+ return -1;
+ }
+ if (change_device && backend->set_device_name (get_device_name())) {
+ error << string_compose (_("Cannot set device name to %1"), get_device_name()) << endmsg;
+ return -1;
+ }
+ if (change_rate && backend->set_sample_rate (get_rate())) {
+ error << string_compose (_("Cannot set sample rate to %1"), get_rate()) << endmsg;
+ return -1;
+ }
+ if (change_bufsize && backend->set_buffer_size (get_buffer_size())) {
+ error << string_compose (_("Cannot set buffer size to %1"), get_buffer_size()) << endmsg;
+ return -1;
+ }
+
+ if (change_channels || get_input_channels() == 0 || get_output_channels() == 0) {
+ if (backend->set_input_channels (get_input_channels())) {
+ error << string_compose (_("Cannot set input channels to %1"), get_input_channels()) << endmsg;
+ return -1;
+ }
+ if (backend->set_output_channels (get_output_channels())) {
+ error << string_compose (_("Cannot set output channels to %1"), get_output_channels()) << endmsg;
+ return -1;
+ }
+ }
+ if (change_latency) {
+ if (backend->set_systemic_input_latency (get_input_latency())) {
+ error << string_compose (_("Cannot set input latency to %1"), get_input_latency()) << endmsg;
+ return -1;
+ }
+ if (backend->set_systemic_output_latency (get_output_latency())) {
+ error << string_compose (_("Cannot set output latency to %1"), get_output_latency()) << endmsg;
+ return -1;
+ }
+ }
+
+ if (change_midi) {
+ backend->set_midi_option (get_midi_option());
+ }
+
+ if (1 /* TODO */) {
+ for (vector<MidiDeviceSettings>::const_iterator p = _midi_devices.begin(); p != _midi_devices.end(); ++p) {
+ if (_measure_midi) {
+ if (*p == _measure_midi) {
+ backend->set_midi_device_enabled ((*p)->name, true);
+ } else {
+ backend->set_midi_device_enabled ((*p)->name, false);
+ }
+ continue;
+ }
+ backend->set_midi_device_enabled ((*p)->name, (*p)->enabled);
+ if (backend->can_set_systemic_midi_latencies()) {
+ backend->set_systemic_midi_input_latency ((*p)->name, (*p)->input_latency);
+ backend->set_systemic_midi_output_latency ((*p)->name, (*p)->output_latency);
+ }
+ }
+ }
+
+ if (start || (was_running && restart_required)) {
+ if (ARDOUR_UI::instance()->reconnect_to_engine()) {
+ return -1;
+ }
+ }
+
+ post_push ();
+
+ return 0;
+}
+
+void
+EngineControl::post_push ()
+{
+ /* get a pointer to the current state object, creating one if
+ * necessary
+ */
+
+ State state = get_saved_state_for_currently_displayed_backend_and_device ();
+
+ if (!state) {
+ state = save_state ();
+ assert (state);
+ }
+
+ /* all off */
+
+ for (StateList::iterator i = states.begin(); i != states.end(); ++i) {
+ (*i)->active = false;
+ }
+
+ /* mark this one active (to be used next time the dialog is
+ * shown)
+ */
+
+ state->active = true;
+
+ if (_have_control) { // XXX
+ manage_control_app_sensitivity ();
+ }
+
+ /* schedule a redisplay of MIDI ports */
+ //Glib::signal_timeout().connect (sigc::bind_return (sigc::mem_fun (*this, &EngineControl::refresh_midi_display), false), 1000);
+}
+
+
+float
+EngineControl::get_rate () const
+{
+ float r = atof (sample_rate_combo.get_active_text ());
+ /* the string may have been translated with an abbreviation for
+ * thousands, so use a crude heuristic to fix this.
+ */
+ if (r < 1000.0) {
+ r *= 1000.0;
+ }
+ return r;
+}
+
+
+uint32_t
+EngineControl::get_buffer_size () const
+{
+ string txt = buffer_size_combo.get_active_text ();
+ uint32_t samples;
+
+ if (sscanf (txt.c_str(), "%d", &samples) != 1) {
+ throw exception ();
+ }
+
+ return samples;
+}
+
+string
+EngineControl::get_midi_option () const
+{
+ return midi_option_combo.get_active_text();
+}
+
+uint32_t
+EngineControl::get_input_channels() const
+{
+ if (ARDOUR::Profile->get_mixbus()) {
+ boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+ if (!backend) return 0;
+ return backend->input_channels();
+ }
+ return (uint32_t) input_channels_adjustment.get_value();
+}
+
+uint32_t
+EngineControl::get_output_channels() const
+{
+ if (ARDOUR::Profile->get_mixbus()) {
+ boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+ if (!backend) return 0;
+ return backend->input_channels();
+ }
+ return (uint32_t) output_channels_adjustment.get_value();
+}
+
+uint32_t
+EngineControl::get_input_latency() const
+{
+ return (uint32_t) input_latency_adjustment.get_value();
+}
+
+uint32_t
+EngineControl::get_output_latency() const
+{
+ return (uint32_t) output_latency_adjustment.get_value();
+}
+
+string
+EngineControl::get_backend () const
+{
+ return backend_combo.get_active_text ();
+}
+
+string
+EngineControl::get_driver () const
+{
+ if (driver_combo.get_sensitive() && driver_combo.get_parent()) {
+ return driver_combo.get_active_text ();
+ } else {
+ return "";
+ }
+}
+
+string
+EngineControl::get_device_name () const
+{
+ return device_combo.get_active_text ();
+}
+
+void
+EngineControl::control_app_button_clicked ()
+{
+ boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+
+ if (!backend) {
+ return;
+ }
+
+ backend->launch_control_app ();
+}
+
+void
+EngineControl::manage_control_app_sensitivity ()
+{
+ boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+
+ if (!backend) {
+ return;
+ }
+
+ string appname = backend->control_app_name();
+
+ if (appname.empty()) {
+ control_app_button.set_sensitive (false);
+ } else {
+ control_app_button.set_sensitive (true);
+ }
+}
+
+void
+EngineControl::set_desired_sample_rate (uint32_t sr)
+{
+ _desired_sample_rate = sr;
+ device_changed ();
+}
+
+void
+EngineControl::on_switch_page (GtkNotebookPage*, guint page_num)
+{
+ if (page_num == 0) {
+ cancel_button->set_sensitive (true);
+ ok_button->set_sensitive (true);
+ apply_button->set_sensitive (true);
+ _measure_midi.reset();
+ } else {
+ cancel_button->set_sensitive (false);
+ ok_button->set_sensitive (false);
+ apply_button->set_sensitive (false);
+ }
+
+ if (page_num == midi_tab) {
+ /* MIDI tab */
+ refresh_midi_display ();
+ }
+
+ if (page_num == latency_tab) {
+ /* latency tab */
+
+ if (ARDOUR::AudioEngine::instance()->running()) {
+ // TODO - mark as 'stopped for latency
+ ARDOUR_UI::instance()->disconnect_from_engine ();
+ }
+
+ {
+ PBD::Unwinder<uint32_t> protect_ignore_changes (ignore_changes, ignore_changes + 1);
+
+ /* save any existing latency values */
+
+ uint32_t il = (uint32_t) input_latency.get_value ();
+ uint32_t ol = (uint32_t) input_latency.get_value ();
+
+ /* reset to zero so that our new test instance
+ will be clean of any existing latency measures.
+
+ NB. this should really be done by the backend
+ when stated for latency measurement.
+ */
+
+ input_latency.set_value (0);
+ output_latency.set_value (0);
+
+ push_state_to_backend (false);
+
+ /* reset control */
+
+ input_latency.set_value (il);
+ output_latency.set_value (ol);
+
+ }
+ // This should be done in push_state_to_backend()
+ if (ARDOUR::AudioEngine::instance()->prepare_for_latency_measurement()) {
+ disable_latency_tab ();
+ }
+
+ enable_latency_tab ();
+
+ } else {
+ if (lm_running) {
+ end_latency_detection ();
+ ARDOUR::AudioEngine::instance()->stop_latency_detection();
+ }
+ }
+}
+
+/* latency measurement */
+
+bool
+EngineControl::check_audio_latency_measurement ()
+{
+ MTDM* mtdm = ARDOUR::AudioEngine::instance()->mtdm ();
+
+ if (mtdm->resolve () < 0) {
+ lm_results.set_markup (string_compose (results_markup, _("No signal detected ")));
+ return true;
+ }
+
+ if (mtdm->err () > 0.3) {
+ mtdm->invert ();
+ mtdm->resolve ();
+ }
+
+ char buf[256];
+ ARDOUR::framecnt_t const sample_rate = ARDOUR::AudioEngine::instance()->sample_rate();
+
+ if (sample_rate == 0) {
+ lm_results.set_markup (string_compose (results_markup, _("Disconnected from audio engine")));
+ ARDOUR::AudioEngine::instance()->stop_latency_detection ();
+ return false;
+ }
+
+ int frames_total = mtdm->del();
+ int extra = frames_total - ARDOUR::AudioEngine::instance()->latency_signal_delay();
+
+ snprintf (buf, sizeof (buf), "%s%d samples (%.3lf ms)\n%s%d samples (%.3lf ms)",
+ _("Detected roundtrip latency: "),
+ frames_total, frames_total * 1000.0f/sample_rate,
+ _("Systemic latency: "),
+ extra, extra * 1000.0f/sample_rate);
+
+ bool solid = true;
+
+ if (mtdm->err () > 0.2) {
+ strcat (buf, " ");
+ strcat (buf, _("(signal detection error)"));
+ solid = false;
+ }
+
+ if (mtdm->inv ()) {
+ strcat (buf, " ");
+ strcat (buf, _("(inverted - bad wiring)"));
+ solid = false;
+ }
+
+ lm_results.set_markup (string_compose (results_markup, buf));
+
+ if (solid) {
+ have_lm_results = true;
+ end_latency_detection ();
+ lm_use_button.set_sensitive (true);
+ return false;
+ }
+
+ return true;
+}
+
+bool
+EngineControl::check_midi_latency_measurement ()
+{
+ ARDOUR::MIDIDM* mididm = ARDOUR::AudioEngine::instance()->mididm ();
+
+ if (!mididm->have_signal () || mididm->latency () == 0) {
+ lm_results.set_markup (string_compose (results_markup, _("No signal detected ")));
+ return true;
+ }
+
+ char buf[256];
+ ARDOUR::framecnt_t const sample_rate = ARDOUR::AudioEngine::instance()->sample_rate();
+
+ if (sample_rate == 0) {
+ lm_results.set_markup (string_compose (results_markup, _("Disconnected from audio engine")));
+ ARDOUR::AudioEngine::instance()->stop_latency_detection ();
+ return false;
+ }
+
+ ARDOUR::framecnt_t frames_total = mididm->latency();
+ ARDOUR::framecnt_t extra = frames_total - ARDOUR::AudioEngine::instance()->latency_signal_delay();
+ snprintf (buf, sizeof (buf), "%s%" PRId64" samples (%.1lf ms) dev: %.2f[spl]\n%s%" PRId64" samples (%.1lf ms)",
+ _("Detected roundtrip latency: "),
+ frames_total, frames_total * 1000.0f / sample_rate, mididm->deviation (),
+ _("Systemic latency: "),
+ extra, extra * 1000.0f / sample_rate);
+
+ bool solid = true;
+
+ if (!mididm->ok ()) {
+ strcat (buf, " ");
+ strcat (buf, _("(averaging)"));
+ solid = false;
+ }
+
+ if (mididm->deviation () > 50.0) {
+ strcat (buf, " ");
+ strcat (buf, _("(too large jitter)"));
+ solid = false;
+ } else if (mididm->deviation () > 10.0) {
+ strcat (buf, " ");
+ strcat (buf, _("(large jitter)"));
+ }
+
+ if (solid) {
+ have_lm_results = true;
+ end_latency_detection ();
+ lm_use_button.set_sensitive (true);
+ lm_results.set_markup (string_compose (results_markup, buf));
+ return false;
+ } else if (mididm->processed () > 400) {
+ have_lm_results = false;
+ end_latency_detection ();
+ lm_results.set_markup (string_compose (results_markup, _("Timeout - large MIDI jitter.")));
+ return false;
+ }
+
+ lm_results.set_markup (string_compose (results_markup, buf));
+
+ return true;
+}
+
+void
+EngineControl::start_latency_detection ()
+{
+ ARDOUR::AudioEngine::instance()->set_latency_input_port (lm_input_channel_combo.get_active_text());
+ ARDOUR::AudioEngine::instance()->set_latency_output_port (lm_output_channel_combo.get_active_text());
+
+ if (ARDOUR::AudioEngine::instance()->start_latency_detection (_measure_midi ? true : false) == 0) {
+ lm_results.set_markup (string_compose (results_markup, _("Detecting ...")));
+ if (_measure_midi) {
+ latency_timeout = Glib::signal_timeout().connect (mem_fun (*this, &EngineControl::check_midi_latency_measurement), 100);
+ } else {
+ latency_timeout = Glib::signal_timeout().connect (mem_fun (*this, &EngineControl::check_audio_latency_measurement), 100);
+ }
+ lm_measure_label.set_text (_("Cancel"));
+ have_lm_results = false;
+ lm_use_button.set_sensitive (false);
+ lm_input_channel_combo.set_sensitive (false);
+ lm_output_channel_combo.set_sensitive (false);
+ lm_running = true;
+ }
+}
+
+void
+EngineControl::end_latency_detection ()
+{
+ latency_timeout.disconnect ();
+ ARDOUR::AudioEngine::instance()->stop_latency_detection ();
+ lm_measure_label.set_text (_("Measure"));
+ if (!have_lm_results) {
+ lm_use_button.set_sensitive (false);
+ }
+ lm_input_channel_combo.set_sensitive (true);
+ lm_output_channel_combo.set_sensitive (true);
+ lm_running = false;
+}
+
+void
+EngineControl::latency_button_clicked ()
+{
+ if (!lm_running) {
+ start_latency_detection ();
+ } else {
+ end_latency_detection ();
+ }
+}
+
+void
+EngineControl::use_latency_button_clicked ()
+{
+ if (_measure_midi) {
+ ARDOUR::MIDIDM* mididm = ARDOUR::AudioEngine::instance()->mididm ();
+ if (!mididm) {
+ return;
+ }
+ ARDOUR::framecnt_t frames_total = mididm->latency();
+ ARDOUR::framecnt_t extra = frames_total - ARDOUR::AudioEngine::instance()->latency_signal_delay();
+ uint32_t one_way = max ((ARDOUR::framecnt_t) 0, extra / 2);
+ _measure_midi->input_latency = one_way;
+ _measure_midi->output_latency = one_way;
+ notebook.set_current_page (midi_tab);
+ } else {
+ MTDM* mtdm = ARDOUR::AudioEngine::instance()->mtdm ();
+
+ if (!mtdm) {
+ return;
+ }
+
+ double one_way = rint ((mtdm->del() - ARDOUR::AudioEngine::instance()->latency_signal_delay()) / 2.0);
+ one_way = std::max (0., one_way);
+
+ input_latency_adjustment.set_value (one_way);
+ output_latency_adjustment.set_value (one_way);
+
+ /* back to settings page */
+ notebook.set_current_page (0);
+}
+ }
+
+
+bool
+EngineControl::on_delete_event (GdkEventAny* ev)
+{
+ if (notebook.get_current_page() == 2) {
+ /* currently on latency tab - be sure to clean up */
+ end_latency_detection ();
+ }
+ return ArdourDialog::on_delete_event (ev);
+}
+
+void
+EngineControl::engine_running ()
+{
+ boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+ assert (backend);
+
+ buffer_size_combo.set_active_text (bufsize_as_string (backend->buffer_size()));
+ sample_rate_combo.set_active_text (rate_as_string (backend->sample_rate()));
+
+ buffer_size_combo.set_sensitive (true);
+ sample_rate_combo.set_sensitive (true);
+
+ connect_disconnect_button.set_label (string_compose (_("Disconnect from %1"), backend->name()));
+ connect_disconnect_button.show();
+
+ started_at_least_once = true;
+ engine_status.set_markup(string_compose ("<span foreground=\"green\">%1</span>", _("Active")));
+}
+
+void
+EngineControl::engine_stopped ()
+{
+ boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
+ assert (backend);
+
+ buffer_size_combo.set_sensitive (false);
+ connect_disconnect_button.set_label (string_compose (_("Connect to %1"), backend->name()));
+ connect_disconnect_button.show();
+
+ sample_rate_combo.set_sensitive (true);
+ buffer_size_combo.set_sensitive (true);
+ engine_status.set_markup(string_compose ("<span foreground=\"red\">%1</span>", _("Inactive")));
+}
+
+void
+EngineControl::connect_disconnect_click()
+{
+ if (ARDOUR::AudioEngine::instance()->running()) {
+ ARDOUR_UI::instance()->disconnect_from_engine ();
+ } else {
+ ARDOUR_UI::instance()->reconnect_to_engine ();
+ }
+}
+
+void
+EngineControl::calibrate_audio_latency ()
+{
+ _measure_midi.reset ();
+ have_lm_results = false;
+ lm_use_button.set_sensitive (false);
+ lm_results.set_markup (string_compose (results_markup, _("No measurement results yet")));
+ notebook.set_current_page (latency_tab);
+}
+
+void
+EngineControl::calibrate_midi_latency (MidiDeviceSettings s)
+{
+ _measure_midi = s;
+ have_lm_results = false;
+ lm_use_button.set_sensitive (false);
+ lm_results.set_markup (string_compose (results_markup, _("No measurement results yet")));
+ notebook.set_current_page (latency_tab);
+}
+
+void
+EngineControl::configure_midi_devices ()
+{
+ notebook.set_current_page (midi_tab);
+}