int err;
RETURN_ON_ERROR("snd_seq_open", snd_seq_open(&seq, "default", SND_SEQ_OPEN_DUPLEX, 0));
+ RETURN_ON_ERROR("snd_seq_nonblock", snd_seq_nonblock(seq, 1));
RETURN_ON_ERROR("snd_seq_client_name", snd_seq_set_client_name(seq, "nageru"));
RETURN_ON_ERROR("snd_seq_create_simple_port",
snd_seq_create_simple_port(seq, "nageru",
break;
}
- snd_seq_event_t *event;
- err = snd_seq_event_input(seq, &event);
- if (event->type == SND_SEQ_EVENT_CONTROLLER) {
- printf("Controller %d changed to %d\n", event->data.control.param, event->data.control.value);
-
- const int controller = event->data.control.param;
- const float value = map_controller_to_float(event->data.control.value);
-
- match_controller(controller, MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber,
- value, bind(&ControllerReceiver::set_locut, receiver, _2));
- match_controller(controller, MIDIMappingBusProto::kLimiterThresholdFieldNumber, MIDIMappingProto::kLimiterThresholdBankFieldNumber,
- value, bind(&ControllerReceiver::set_limiter_threshold, receiver, _2));
- match_controller(controller, MIDIMappingBusProto::kMakeupGainFieldNumber, MIDIMappingProto::kMakeupGainBankFieldNumber,
- value, bind(&ControllerReceiver::set_makeup_gain, receiver, _2));
-
- match_controller(controller, MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber,
- value, bind(&ControllerReceiver::set_treble, receiver, _1, _2));
- match_controller(controller, MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber,
- value, bind(&ControllerReceiver::set_mid, receiver, _1, _2));
- match_controller(controller, MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber,
- value, bind(&ControllerReceiver::set_bass, receiver, _1, _2));
- match_controller(controller, MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber,
- value, bind(&ControllerReceiver::set_gain, receiver, _1, _2));
- match_controller(controller, MIDIMappingBusProto::kCompressorThresholdFieldNumber, MIDIMappingProto::kCompressorThresholdBankFieldNumber,
- value, bind(&ControllerReceiver::set_compressor_threshold, receiver, _1, _2));
- match_controller(controller, MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber,
- value, bind(&ControllerReceiver::set_fader, receiver, _1, _2));
- } else if (event->type == SND_SEQ_EVENT_NOTEON) {
- const int note = event->data.note.note;
-
- printf("Note: %d\n", note);
-
- // Bank change commands. TODO: Highlight the bank change in the UI.
- for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
- const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
- if (bus_mapping.has_prev_bank() &&
- bus_mapping.prev_bank().note_number() == note) {
- current_controller_bank = (current_controller_bank + num_controller_banks - 1) % num_controller_banks;
- }
- if (bus_mapping.has_next_bank() &&
- bus_mapping.next_bank().note_number() == note) {
- current_controller_bank = (current_controller_bank + 1) % num_controller_banks;
- }
- if (bus_mapping.has_select_bank_1() &&
- bus_mapping.select_bank_1().note_number() == note) {
- current_controller_bank = 0;
- }
- if (bus_mapping.has_select_bank_2() &&
- bus_mapping.select_bank_2().note_number() == note &&
- num_controller_banks >= 2) {
- current_controller_bank = 1;
- }
- if (bus_mapping.has_select_bank_3() &&
- bus_mapping.select_bank_3().note_number() == note &&
- num_controller_banks >= 3) {
- current_controller_bank = 2;
- }
- if (bus_mapping.has_select_bank_4() &&
- bus_mapping.select_bank_4().note_number() == note &&
- num_controller_banks >= 4) {
- current_controller_bank = 3;
- }
- if (bus_mapping.has_select_bank_5() &&
- bus_mapping.select_bank_5().note_number() == note &&
- num_controller_banks >= 5) {
- current_controller_bank = 4;
- }
+ // Seemingly we can get multiple events in a single poll,
+ // and if we don't handle them all, poll will _not_ alert us!
+ while (!should_quit) {
+ snd_seq_event_t *event;
+ err = snd_seq_event_input(seq, &event);
+ if (err < 0) {
+ if (err == -EINTR) continue;
+ if (err == -EAGAIN) break;
+ fprintf(stderr, "snd_seq_event_input: %s\n", snd_strerror(err));
+ return;
}
+ if (event) {
+ handle_event(seq, event);
+ }
+ }
+ }
+}
- match_button(note, MIDIMappingBusProto::kToggleLocutFieldNumber, MIDIMappingProto::kToggleLocutBankFieldNumber,
- bind(&ControllerReceiver::toggle_locut, receiver, _1));
- match_button(note, MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber, MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber,
- bind(&ControllerReceiver::toggle_auto_gain_staging, receiver, _1));
- match_button(note, MIDIMappingBusProto::kToggleCompressorFieldNumber, MIDIMappingProto::kToggleCompressorBankFieldNumber,
- bind(&ControllerReceiver::toggle_compressor, receiver, _1));
- match_button(note, MIDIMappingBusProto::kClearPeakFieldNumber, MIDIMappingProto::kClearPeakBankFieldNumber,
- bind(&ControllerReceiver::clear_peak, receiver, _1));
- } else if (event->type == SND_SEQ_EVENT_NOTEOFF) {
- // Ignore.
- } else {
- printf("Ignoring MIDI event of unknown type %d.\n", event->type);
+void MIDIMapper::handle_event(snd_seq_t *seq, snd_seq_event_t *event)
+{
+ switch (event->type) {
+ case SND_SEQ_EVENT_CONTROLLER: {
+ printf("Controller %d changed to %d\n", event->data.control.param, event->data.control.value);
+
+ const int controller = event->data.control.param;
+ const float value = map_controller_to_float(event->data.control.value);
+
+ // Global controllers.
+ match_controller(controller, MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber,
+ value, bind(&ControllerReceiver::set_locut, receiver, _2));
+ match_controller(controller, MIDIMappingBusProto::kLimiterThresholdFieldNumber, MIDIMappingProto::kLimiterThresholdBankFieldNumber,
+ value, bind(&ControllerReceiver::set_limiter_threshold, receiver, _2));
+ match_controller(controller, MIDIMappingBusProto::kMakeupGainFieldNumber, MIDIMappingProto::kMakeupGainBankFieldNumber,
+ value, bind(&ControllerReceiver::set_makeup_gain, receiver, _2));
+
+ // Bus controllers.
+ match_controller(controller, MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber,
+ value, bind(&ControllerReceiver::set_treble, receiver, _1, _2));
+ match_controller(controller, MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber,
+ value, bind(&ControllerReceiver::set_mid, receiver, _1, _2));
+ match_controller(controller, MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber,
+ value, bind(&ControllerReceiver::set_bass, receiver, _1, _2));
+ match_controller(controller, MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber,
+ value, bind(&ControllerReceiver::set_gain, receiver, _1, _2));
+ match_controller(controller, MIDIMappingBusProto::kCompressorThresholdFieldNumber, MIDIMappingProto::kCompressorThresholdBankFieldNumber,
+ value, bind(&ControllerReceiver::set_compressor_threshold, receiver, _1, _2));
+ match_controller(controller, MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber,
+ value, bind(&ControllerReceiver::set_fader, receiver, _1, _2));
+ break;
+ }
+ case SND_SEQ_EVENT_NOTEON: {
+ const int note = event->data.note.note;
+
+ printf("Note: %d\n", note);
+
+ // Bank change commands. TODO: Highlight the bank change in the UI.
+ for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
+ const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
+ if (bus_mapping.has_prev_bank() &&
+ bus_mapping.prev_bank().note_number() == note) {
+ current_controller_bank = (current_controller_bank + num_controller_banks - 1) % num_controller_banks;
+ }
+ if (bus_mapping.has_next_bank() &&
+ bus_mapping.next_bank().note_number() == note) {
+ current_controller_bank = (current_controller_bank + 1) % num_controller_banks;
+ }
+ if (bus_mapping.has_select_bank_1() &&
+ bus_mapping.select_bank_1().note_number() == note) {
+ current_controller_bank = 0;
+ }
+ if (bus_mapping.has_select_bank_2() &&
+ bus_mapping.select_bank_2().note_number() == note &&
+ num_controller_banks >= 2) {
+ current_controller_bank = 1;
+ }
+ if (bus_mapping.has_select_bank_3() &&
+ bus_mapping.select_bank_3().note_number() == note &&
+ num_controller_banks >= 3) {
+ current_controller_bank = 2;
+ }
+ if (bus_mapping.has_select_bank_4() &&
+ bus_mapping.select_bank_4().note_number() == note &&
+ num_controller_banks >= 4) {
+ current_controller_bank = 3;
+ }
+ if (bus_mapping.has_select_bank_5() &&
+ bus_mapping.select_bank_5().note_number() == note &&
+ num_controller_banks >= 5) {
+ current_controller_bank = 4;
+ }
}
+
+ match_button(note, MIDIMappingBusProto::kToggleLocutFieldNumber, MIDIMappingProto::kToggleLocutBankFieldNumber,
+ bind(&ControllerReceiver::toggle_locut, receiver, _1));
+ match_button(note, MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber, MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber,
+ bind(&ControllerReceiver::toggle_auto_gain_staging, receiver, _1));
+ match_button(note, MIDIMappingBusProto::kToggleCompressorFieldNumber, MIDIMappingProto::kToggleCompressorBankFieldNumber,
+ bind(&ControllerReceiver::toggle_compressor, receiver, _1));
+ match_button(note, MIDIMappingBusProto::kClearPeakFieldNumber, MIDIMappingProto::kClearPeakBankFieldNumber,
+ bind(&ControllerReceiver::clear_peak, receiver, _1));
+ }
+ case SND_SEQ_EVENT_NOTEOFF:
+ // Ignore.
+ break;
+ default:
+ printf("Ignoring MIDI event of unknown type %d.\n", event->type);
}
}