Highlight which controllers have currently active MIDI mappings. Very useful with...

[nageru] / midi_mapper.cpp

diff --git a/midi_mapper.cpp b/midi_mapper.cpp
index 392fac4b82b89b7570fa736f4b5566bff935752d..b93f48205d24e23492b215e90dc53196eaac6a42 100644 (file)
--- a/midi_mapper.cpp
+++ b/midi_mapper.cpp
@@ -36,6 +36,7 @@ MIDIMapper::MIDIMapper(ControllerReceiver *receiver)
 {
        should_quit_fd = eventfd(/*initval=*/0, /*flags=*/0);
        assert(should_quit_fd != -1);
+       refresh_highlights();
 }
 
 MIDIMapper::~MIDIMapper()
@@ -95,6 +96,9 @@ void MIDIMapper::set_midi_mapping(const MIDIMappingProto &new_mapping)
 
        num_controller_banks = min(max(mapping_proto->num_controller_banks(), 1), 5);
         current_controller_bank = 0;
+
+       receiver->clear_all_highlights();
+       update_highlights();
 }
 
 void MIDIMapper::start_thread()
@@ -108,6 +112,13 @@ const MIDIMappingProto &MIDIMapper::get_current_mapping() const
        return *mapping_proto;
 }
 
+ControllerReceiver *MIDIMapper::set_receiver(ControllerReceiver *new_receiver)
+{
+       lock_guard<mutex> lock(mapping_mu);
+       swap(receiver, new_receiver);
+       return new_receiver;  // Now old receiver.
+}
+
 #define RETURN_ON_ERROR(msg, expr) do {                            \
        int err = (expr);                                          \
        if (err < 0) {                                             \
@@ -206,6 +217,8 @@ void MIDIMapper::handle_event(snd_seq_t *seq, snd_seq_event_t *event)
                const int controller = event->data.control.param;
                const float value = map_controller_to_float(event->data.control.value);
 
+               receiver->controller_changed(controller);
+
                // Global controllers.
                match_controller(controller, MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber,
                        value, bind(&ControllerReceiver::set_locut, receiver, _2));
@@ -232,42 +245,50 @@ void MIDIMapper::handle_event(snd_seq_t *seq, snd_seq_event_t *event)
        case SND_SEQ_EVENT_NOTEON: {
                const int note = event->data.note.note;
 
+               receiver->note_on(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;
+                               update_highlights();
                        }
                        if (bus_mapping.has_next_bank() &&
                            bus_mapping.next_bank().note_number() == note) {
                                current_controller_bank = (current_controller_bank + 1) % num_controller_banks;
+                               update_highlights();
                        }
                        if (bus_mapping.has_select_bank_1() &&
                            bus_mapping.select_bank_1().note_number() == note) {
                                current_controller_bank = 0;
+                               update_highlights();
                        }
                        if (bus_mapping.has_select_bank_2() &&
                            bus_mapping.select_bank_2().note_number() == note &&
                            num_controller_banks >= 2) {
                                current_controller_bank = 1;
+                               update_highlights();
                        }
                        if (bus_mapping.has_select_bank_3() &&
                            bus_mapping.select_bank_3().note_number() == note &&
                            num_controller_banks >= 3) {
                                current_controller_bank = 2;
+                               update_highlights();
                        }
                        if (bus_mapping.has_select_bank_4() &&
                            bus_mapping.select_bank_4().note_number() == note &&
                            num_controller_banks >= 4) {
                                current_controller_bank = 3;
+                               update_highlights();
                        }
                        if (bus_mapping.has_select_bank_5() &&
                            bus_mapping.select_bank_5().note_number() == note &&
                            num_controller_banks >= 5) {
                                current_controller_bank = 4;
+                               update_highlights();
                        }
                }
 
@@ -361,6 +382,18 @@ void MIDIMapper::match_button(int note, int field_number, int bank_field_number,
        }
 }
 
+bool MIDIMapper::has_active_controller(unsigned bus_idx, int field_number, int bank_field_number)
+{
+       if (bank_mismatch(bank_field_number)) {
+               return false;
+       }
+
+       const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
+       const FieldDescriptor *descriptor = bus_mapping.GetDescriptor()->FindFieldByNumber(field_number);
+       const Reflection *bus_reflection = bus_mapping.GetReflection();
+       return bus_reflection->HasField(bus_mapping, descriptor);
+}
+
 bool MIDIMapper::bank_mismatch(int bank_field_number)
 {
        const FieldDescriptor *bank_descriptor = mapping_proto->GetDescriptor()->FindFieldByNumber(bank_field_number);
@@ -368,3 +401,56 @@ bool MIDIMapper::bank_mismatch(int bank_field_number)
        return (reflection->HasField(*mapping_proto, bank_descriptor) &&
                reflection->GetInt32(*mapping_proto, bank_descriptor) != current_controller_bank);
 }
+
+void MIDIMapper::refresh_highlights()
+{
+       receiver->clear_all_highlights();
+       update_highlights();
+}
+
+void MIDIMapper::update_highlights()
+{
+       // Global controllers.
+       bool highlight_locut = false;
+       bool highlight_limiter_threshold = false;
+       bool highlight_makeup_gain = false;
+       for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
+               if (has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber)) {
+                       highlight_locut = true;
+               }
+               if (has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kLimiterThresholdFieldNumber, MIDIMappingProto::kLimiterThresholdBankFieldNumber)) {
+                       highlight_limiter_threshold = true;
+               }
+               if (has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kMakeupGainFieldNumber, MIDIMappingProto::kMakeupGainBankFieldNumber)) {
+                       highlight_makeup_gain = true;
+               }
+       }
+       receiver->highlight_locut(highlight_locut);
+       receiver->highlight_limiter_threshold(highlight_limiter_threshold);
+       receiver->highlight_makeup_gain(highlight_makeup_gain);
+
+       // Per-bus controllers.
+       for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
+               receiver->highlight_treble(bus_idx, has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber));
+               receiver->highlight_mid(bus_idx, has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber));
+               receiver->highlight_bass(bus_idx, has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber));
+               receiver->highlight_gain(bus_idx, has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber));
+               receiver->highlight_compressor_threshold(bus_idx, has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kCompressorThresholdFieldNumber, MIDIMappingProto::kCompressorThresholdBankFieldNumber));
+               receiver->highlight_fader(bus_idx, has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber));
+               receiver->highlight_toggle_locut(bus_idx, has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kToggleLocutFieldNumber, MIDIMappingProto::kToggleLocutBankFieldNumber));
+               receiver->highlight_toggle_auto_gain_staging(bus_idx, has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber, MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber));
+               receiver->highlight_toggle_compressor(bus_idx, has_active_controller(
+                       bus_idx, MIDIMappingBusProto::kToggleCompressorFieldNumber, MIDIMappingProto::kToggleCompressorBankFieldNumber));
+       }
+}