git.sesse.net Git - nageru/blob - nageru/midi_mapper.cpp

   1 #include "midi_mapper.h"
   2
   3 #include <assert.h>
   4 #include <google/protobuf/descriptor.h>
   5 #include <google/protobuf/message.h>
   6 #include <map>
   7 #include <mutex>
   8 #include <poll.h>
   9 #include <stdint.h>
  10 #include <stdio.h>
  11 #include <string>
  12 #include <algorithm>
  13 #include <functional>
  14
  15 #include "audio_mixer.h"
  16 #include "nageru_midi_mapping.pb.h"
  17 #include "shared/midi_device.h"
  18 #include "shared/midi_mapper_util.h"
  19 #include "shared/text_proto.h"
  20
  21 using namespace google::protobuf;
  22 using namespace std;
  23 using namespace std::placeholders;
  24
  25 MIDIMapper::MIDIMapper(ControllerReceiver *receiver)
  26         : receiver(receiver), mapping_proto(new MIDIMappingProto), midi_device(this)
  27 {
  28 }
  29
  30 MIDIMapper::~MIDIMapper() {}
  31
  32 bool load_midi_mapping_from_file(const string &filename, MIDIMappingProto *new_mapping)
  33 {
  34         return load_proto_from_file(filename, new_mapping);
  35 }
  36
  37 bool save_midi_mapping_to_file(const MIDIMappingProto &mapping_proto, const string &filename)
  38 {
  39         return save_proto_to_file(mapping_proto, filename);
  40 }
  41
  42 void MIDIMapper::set_midi_mapping(const MIDIMappingProto &new_mapping)
  43 {
  44         lock_guard<mutex> lock(mu);
  45         if (mapping_proto) {
  46                 mapping_proto->CopyFrom(new_mapping);
  47         } else {
  48                 mapping_proto.reset(new MIDIMappingProto(new_mapping));
  49         }
  50
  51         num_controller_banks = min(max(mapping_proto->num_controller_banks(), 1), 5);
  52         current_controller_bank = 0;
  53
  54         receiver->clear_all_highlights();
  55         update_highlights();
  56 }
  57
  58 void MIDIMapper::start_thread()
  59 {
  60         midi_device.start_thread();
  61 }
  62
  63 const MIDIMappingProto &MIDIMapper::get_current_mapping() const
  64 {
  65         lock_guard<mutex> lock(mu);
  66         return *mapping_proto;
  67 }
  68
  69 ControllerReceiver *MIDIMapper::set_receiver(ControllerReceiver *new_receiver)
  70 {
  71         lock_guard<mutex> lock(mu);
  72         swap(receiver, new_receiver);
  73         return new_receiver;  // Now old receiver.
  74 }
  75
  76 void MIDIMapper::controller_received(int controller, int value_int)
  77 {
  78         const float value = map_controller_to_float(controller, value_int);
  79
  80         receiver->controller_changed(controller);
  81
  82         // Global controllers.
  83         match_controller(controller, MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber,
  84                 value, bind(&ControllerReceiver::set_locut, receiver, _2));
  85         match_controller(controller, MIDIMappingBusProto::kLimiterThresholdFieldNumber, MIDIMappingProto::kLimiterThresholdBankFieldNumber,
  86                 value, bind(&ControllerReceiver::set_limiter_threshold, receiver, _2));
  87         match_controller(controller, MIDIMappingBusProto::kMakeupGainFieldNumber, MIDIMappingProto::kMakeupGainBankFieldNumber,
  88                 value, bind(&ControllerReceiver::set_makeup_gain, receiver, _2));
  89
  90         // Bus controllers.
  91         match_controller(controller, MIDIMappingBusProto::kStereoWidthFieldNumber, MIDIMappingProto::kStereoWidthBankFieldNumber,
  92                 value, bind(&ControllerReceiver::set_stereo_width, receiver, _1, _2));
  93         match_controller(controller, MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber,
  94                 value, bind(&ControllerReceiver::set_treble, receiver, _1, _2));
  95         match_controller(controller, MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber,
  96                 value, bind(&ControllerReceiver::set_mid, receiver, _1, _2));
  97         match_controller(controller, MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber,
  98                 value, bind(&ControllerReceiver::set_bass, receiver, _1, _2));
  99         match_controller(controller, MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber,
 100                 value, bind(&ControllerReceiver::set_gain, receiver, _1, _2));
 101         match_controller(controller, MIDIMappingBusProto::kCompressorThresholdFieldNumber, MIDIMappingProto::kCompressorThresholdBankFieldNumber,
 102                 value, bind(&ControllerReceiver::set_compressor_threshold, receiver, _1, _2));
 103         match_controller(controller, MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber,
 104                 value, bind(&ControllerReceiver::set_fader, receiver, _1, _2));
 105 }
 106
 107 void MIDIMapper::note_on_received(int note)
 108 {
 109         lock_guard<mutex> lock(mu);
 110         receiver->note_on(note);
 111
 112         for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
 113                 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
 114                 if (bus_mapping.has_prev_bank() &&
 115                     bus_mapping.prev_bank().note_number() == note) {
 116                         current_controller_bank = (current_controller_bank + num_controller_banks - 1) % num_controller_banks;
 117                         update_highlights();
 118                         update_lights_lock_held();
 119                 }
 120                 if (bus_mapping.has_next_bank() &&
 121                     bus_mapping.next_bank().note_number() == note) {
 122                         current_controller_bank = (current_controller_bank + 1) % num_controller_banks;
 123                         update_highlights();
 124                         update_lights_lock_held();
 125                 }
 126                 if (bus_mapping.has_select_bank_1() &&
 127                     bus_mapping.select_bank_1().note_number() == note) {
 128                         current_controller_bank = 0;
 129                         update_highlights();
 130                         update_lights_lock_held();
 131                 }
 132                 if (bus_mapping.has_select_bank_2() &&
 133                     bus_mapping.select_bank_2().note_number() == note &&
 134                     num_controller_banks >= 2) {
 135                         current_controller_bank = 1;
 136                         update_highlights();
 137                         update_lights_lock_held();
 138                 }
 139                 if (bus_mapping.has_select_bank_3() &&
 140                     bus_mapping.select_bank_3().note_number() == note &&
 141                     num_controller_banks >= 3) {
 142                         current_controller_bank = 2;
 143                         update_highlights();
 144                         update_lights_lock_held();
 145                 }
 146                 if (bus_mapping.has_select_bank_4() &&
 147                     bus_mapping.select_bank_4().note_number() == note &&
 148                     num_controller_banks >= 4) {
 149                         current_controller_bank = 3;
 150                         update_highlights();
 151                         update_lights_lock_held();
 152                 }
 153                 if (bus_mapping.has_select_bank_5() &&
 154                     bus_mapping.select_bank_5().note_number() == note &&
 155                     num_controller_banks >= 5) {
 156                         current_controller_bank = 4;
 157                         update_highlights();
 158                         update_lights_lock_held();
 159                 }
 160         }
 161
 162         match_button(note, MIDIMappingBusProto::kToggleLocutFieldNumber, MIDIMappingProto::kToggleLocutBankFieldNumber,
 163                 bind(&ControllerReceiver::toggle_locut, receiver, _1));
 164         match_button(note, MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber, MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber,
 165                 bind(&ControllerReceiver::toggle_auto_gain_staging, receiver, _1));
 166         match_button(note, MIDIMappingBusProto::kToggleCompressorFieldNumber, MIDIMappingProto::kToggleCompressorBankFieldNumber,
 167                 bind(&ControllerReceiver::toggle_compressor, receiver, _1));
 168         match_button(note, MIDIMappingBusProto::kClearPeakFieldNumber, MIDIMappingProto::kClearPeakBankFieldNumber,
 169                 bind(&ControllerReceiver::clear_peak, receiver, _1));
 170         match_button(note, MIDIMappingBusProto::kToggleMuteFieldNumber, MIDIMappingProto::kClearPeakBankFieldNumber,
 171                 bind(&ControllerReceiver::toggle_mute, receiver, _1));
 172         match_button(note, MIDIMappingBusProto::kToggleLimiterFieldNumber, MIDIMappingProto::kToggleLimiterBankFieldNumber,
 173                 bind(&ControllerReceiver::toggle_limiter, receiver));
 174         match_button(note, MIDIMappingBusProto::kToggleAutoMakeupGainFieldNumber, MIDIMappingProto::kToggleAutoMakeupGainBankFieldNumber,
 175                 bind(&ControllerReceiver::toggle_auto_makeup_gain, receiver));
 176         match_button(note, MIDIMappingBusProto::kSwitchVideoChannelFieldNumber, MIDIMappingProto::kSwitchVideoChannelBankFieldNumber,
 177                 bind(&ControllerReceiver::switch_video_channel, receiver, _1));
 178         match_button(note, MIDIMappingBusProto::kApplyTransitionFieldNumber, MIDIMappingProto::kApplyTransitionBankFieldNumber,
 179                 bind(&ControllerReceiver::apply_transition, receiver, _1));
 180         match_button(note, MIDIMappingBusProto::kPrevAudioViewFieldNumber, MIDIMappingProto::kPrevAudioViewBankFieldNumber,
 181                 bind(&ControllerReceiver::prev_audio_view, receiver));
 182         match_button(note, MIDIMappingBusProto::kNextAudioViewFieldNumber, MIDIMappingProto::kNextAudioViewBankFieldNumber,
 183                 bind(&ControllerReceiver::prev_audio_view, receiver));
 184         match_button(note, MIDIMappingBusProto::kBeginNewVideoSegmentFieldNumber, MIDIMappingProto::kBeginNewVideoSegmentBankFieldNumber,
 185                 bind(&ControllerReceiver::begin_new_segment, receiver));
 186         match_button(note, MIDIMappingBusProto::kExitFieldNumber, MIDIMappingProto::kExitBankFieldNumber,
 187                 bind(&ControllerReceiver::exit, receiver));
 188 }
 189
 190 void MIDIMapper::update_num_subscribers(unsigned num_subscribers)
 191 {
 192         num_subscribed_ports = num_subscribers;
 193         update_highlights();
 194 }
 195
 196 void MIDIMapper::match_controller(int controller, int field_number, int bank_field_number, float value, function<void(unsigned, float)> func)
 197 {
 198         if (bank_mismatch(bank_field_number)) {
 199                 return;
 200         }
 201
 202         for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
 203                 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
 204                 if (match_controller_helper(bus_mapping, field_number, controller)) {
 205                         func(bus_idx, value);
 206                 }
 207         }
 208 }
 209
 210 void MIDIMapper::match_button(int note, int field_number, int bank_field_number, function<void(unsigned)> func)
 211 {
 212         if (bank_mismatch(bank_field_number)) {
 213                 return;
 214         }
 215
 216         for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
 217                 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
 218                 if (match_button_helper(bus_mapping, field_number, note)) {
 219                         func(bus_idx);
 220                 }
 221         }
 222 }
 223
 224 bool MIDIMapper::has_active_controller(unsigned bus_idx, int field_number, int bank_field_number)
 225 {
 226         if (bank_mismatch(bank_field_number)) {
 227                 return false;
 228         }
 229
 230         const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
 231         const FieldDescriptor *descriptor = bus_mapping.GetDescriptor()->FindFieldByNumber(field_number);
 232         const Reflection *bus_reflection = bus_mapping.GetReflection();
 233         return bus_reflection->HasField(bus_mapping, descriptor);
 234 }
 235
 236 bool MIDIMapper::bank_mismatch(int bank_field_number)
 237 {
 238         return !match_bank_helper(*mapping_proto, bank_field_number, current_controller_bank);
 239 }
 240
 241 void MIDIMapper::refresh_highlights()
 242 {
 243         receiver->clear_all_highlights();
 244         update_highlights();
 245 }
 246
 247 void MIDIMapper::refresh_lights()
 248 {
 249         lock_guard<mutex> lock(mu);
 250         update_lights_lock_held();
 251 }
 252
 253 void MIDIMapper::update_highlights()
 254 {
 255         if (num_subscribed_ports.load() == 0) {
 256                 receiver->clear_all_highlights();
 257                 return;
 258         }
 259
 260         // Global controllers.
 261         bool highlight_locut = false;
 262         bool highlight_limiter_threshold = false;
 263         bool highlight_makeup_gain = false;
 264         bool highlight_toggle_limiter = false;
 265         bool highlight_toggle_auto_makeup_gain = false;
 266         for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
 267                 if (has_active_controller(
 268                         bus_idx, MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber)) {
 269                         highlight_locut = true;
 270                 }
 271                 if (has_active_controller(
 272                         bus_idx, MIDIMappingBusProto::kLimiterThresholdFieldNumber, MIDIMappingProto::kLimiterThresholdBankFieldNumber)) {
 273                         highlight_limiter_threshold = true;
 274                 }
 275                 if (has_active_controller(
 276                         bus_idx, MIDIMappingBusProto::kMakeupGainFieldNumber, MIDIMappingProto::kMakeupGainBankFieldNumber)) {
 277                         highlight_makeup_gain = true;
 278                 }
 279                 if (has_active_controller(
 280                         bus_idx, MIDIMappingBusProto::kToggleLimiterFieldNumber, MIDIMappingProto::kToggleLimiterBankFieldNumber)) {
 281                         highlight_toggle_limiter = true;
 282                 }
 283                 if (has_active_controller(
 284                         bus_idx, MIDIMappingBusProto::kToggleAutoMakeupGainFieldNumber, MIDIMappingProto::kToggleAutoMakeupGainBankFieldNumber)) {
 285                         highlight_toggle_auto_makeup_gain = true;
 286                 }
 287         }
 288         receiver->highlight_locut(highlight_locut);
 289         receiver->highlight_limiter_threshold(highlight_limiter_threshold);
 290         receiver->highlight_makeup_gain(highlight_makeup_gain);
 291         receiver->highlight_toggle_limiter(highlight_toggle_limiter);
 292         receiver->highlight_toggle_auto_makeup_gain(highlight_toggle_auto_makeup_gain);
 293
 294         // Per-bus controllers.
 295         for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
 296                 receiver->highlight_stereo_width(bus_idx, has_active_controller(
 297                         bus_idx, MIDIMappingBusProto::kStereoWidthFieldNumber, MIDIMappingProto::kStereoWidthBankFieldNumber));
 298                 receiver->highlight_treble(bus_idx, has_active_controller(
 299                         bus_idx, MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber));
 300                 receiver->highlight_mid(bus_idx, has_active_controller(
 301                         bus_idx, MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber));
 302                 receiver->highlight_bass(bus_idx, has_active_controller(
 303                         bus_idx, MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber));
 304                 receiver->highlight_gain(bus_idx, has_active_controller(
 305                         bus_idx, MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber));
 306                 receiver->highlight_compressor_threshold(bus_idx, has_active_controller(
 307                         bus_idx, MIDIMappingBusProto::kCompressorThresholdFieldNumber, MIDIMappingProto::kCompressorThresholdBankFieldNumber));
 308                 receiver->highlight_fader(bus_idx, has_active_controller(
 309                         bus_idx, MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber));
 310                 receiver->highlight_mute(bus_idx, has_active_controller(
 311                         bus_idx, MIDIMappingBusProto::kToggleMuteFieldNumber, MIDIMappingProto::kToggleMuteBankFieldNumber));
 312                 receiver->highlight_toggle_locut(bus_idx, has_active_controller(
 313                         bus_idx, MIDIMappingBusProto::kToggleLocutFieldNumber, MIDIMappingProto::kToggleLocutBankFieldNumber));
 314                 receiver->highlight_toggle_auto_gain_staging(bus_idx, has_active_controller(
 315                         bus_idx, MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber, MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber));
 316                 receiver->highlight_toggle_compressor(bus_idx, has_active_controller(
 317                         bus_idx, MIDIMappingBusProto::kToggleCompressorFieldNumber, MIDIMappingProto::kToggleCompressorBankFieldNumber));
 318         }
 319 }
 320
 321 void MIDIMapper::update_lights_lock_held()
 322 {
 323         if (global_audio_mixer == nullptr) {
 324                 return;
 325         }
 326
 327         map<MIDIDevice::LightKey, uint8_t> active_lights;  // Desired state.
 328         if (current_controller_bank == 0) {
 329                 activate_lights_all_buses(MIDIMappingBusProto::kBank1IsSelectedFieldNumber, &active_lights);
 330         }
 331         if (current_controller_bank == 1) {
 332                 activate_lights_all_buses(MIDIMappingBusProto::kBank2IsSelectedFieldNumber, &active_lights);
 333         }
 334         if (current_controller_bank == 2) {
 335                 activate_lights_all_buses(MIDIMappingBusProto::kBank3IsSelectedFieldNumber, &active_lights);
 336         }
 337         if (current_controller_bank == 3) {
 338                 activate_lights_all_buses(MIDIMappingBusProto::kBank4IsSelectedFieldNumber, &active_lights);
 339         }
 340         if (current_controller_bank == 4) {
 341                 activate_lights_all_buses(MIDIMappingBusProto::kBank5IsSelectedFieldNumber, &active_lights);
 342         }
 343         if (global_audio_mixer->get_limiter_enabled()) {
 344                 activate_lights_all_buses(MIDIMappingBusProto::kLimiterIsOnFieldNumber, &active_lights);
 345         }
 346         if (global_audio_mixer->get_final_makeup_gain_auto()) {
 347                 activate_lights_all_buses(MIDIMappingBusProto::kAutoMakeupGainIsOnFieldNumber, &active_lights);
 348         }
 349         unsigned num_buses = min<unsigned>(global_audio_mixer->num_buses(), mapping_proto->bus_mapping_size());
 350         for (unsigned bus_idx = 0; bus_idx < num_buses; ++bus_idx) {
 351                 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
 352                 if (global_audio_mixer->get_mute(bus_idx)) {
 353                         activate_mapped_light(bus_mapping, MIDIMappingBusProto::kIsMutedFieldNumber, &active_lights);
 354                 }
 355                 if (global_audio_mixer->get_locut_enabled(bus_idx)) {
 356                         activate_mapped_light(bus_mapping, MIDIMappingBusProto::kLocutIsOnFieldNumber, &active_lights);
 357                 }
 358                 if (global_audio_mixer->get_gain_staging_auto(bus_idx)) {
 359                         activate_mapped_light(bus_mapping, MIDIMappingBusProto::kAutoGainStagingIsOnFieldNumber, &active_lights);
 360                 }
 361                 if (global_audio_mixer->get_compressor_enabled(bus_idx)) {
 362                         activate_mapped_light(bus_mapping, MIDIMappingBusProto::kCompressorIsOnFieldNumber, &active_lights);
 363                 }
 364                 if (has_peaked[bus_idx]) {
 365                         activate_mapped_light(bus_mapping, MIDIMappingBusProto::kHasPeakedFieldNumber, &active_lights);
 366                 }
 367         }
 368
 369         midi_device.update_lights(active_lights);
 370 }
 371
 372 void MIDIMapper::activate_lights_all_buses(int field_number, map<MIDIDevice::LightKey, uint8_t> *active_lights)
 373 {
 374         for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
 375                 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
 376                 activate_mapped_light(bus_mapping, field_number, active_lights);
 377         }
 378 }