1 #include "midi_mapper.h"
3 #include <alsa/asoundlib.h>
7 #include <google/protobuf/descriptor.h>
8 #include <google/protobuf/io/zero_copy_stream_impl.h>
9 #include <google/protobuf/message.h>
10 #include <google/protobuf/text_format.h>
15 #include <sys/eventfd.h>
21 #include "audio_mixer.h"
22 #include "nageru_midi_mapping.pb.h"
23 #include "shared/midi_device.h"
24 #include "shared/midi_mapper_util.h"
25 #include "shared/text_proto.h"
27 using namespace google::protobuf;
29 using namespace std::placeholders;
31 MIDIMapper::MIDIMapper(ControllerReceiver *receiver)
32 : receiver(receiver), mapping_proto(new MIDIMappingProto), midi_device(this)
36 MIDIMapper::~MIDIMapper() {}
38 bool load_midi_mapping_from_file(const string &filename, MIDIMappingProto *new_mapping)
40 return load_proto_from_file(filename, new_mapping);
43 bool save_midi_mapping_to_file(const MIDIMappingProto &mapping_proto, const string &filename)
45 return save_proto_to_file(mapping_proto, filename);
48 void MIDIMapper::set_midi_mapping(const MIDIMappingProto &new_mapping)
50 lock_guard<mutex> lock(mu);
52 mapping_proto->CopyFrom(new_mapping);
54 mapping_proto.reset(new MIDIMappingProto(new_mapping));
57 num_controller_banks = min(max(mapping_proto->num_controller_banks(), 1), 5);
58 current_controller_bank = 0;
60 receiver->clear_all_highlights();
64 void MIDIMapper::start_thread()
66 midi_device.start_thread();
69 const MIDIMappingProto &MIDIMapper::get_current_mapping() const
71 lock_guard<mutex> lock(mu);
72 return *mapping_proto;
75 ControllerReceiver *MIDIMapper::set_receiver(ControllerReceiver *new_receiver)
77 lock_guard<mutex> lock(mu);
78 swap(receiver, new_receiver);
79 return new_receiver; // Now old receiver.
82 void MIDIMapper::controller_received(int controller, int value_int)
84 const float value = map_controller_to_float(controller, value_int);
86 receiver->controller_changed(controller);
88 // Global controllers.
89 match_controller(controller, MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber,
90 value, bind(&ControllerReceiver::set_locut, receiver, _2));
91 match_controller(controller, MIDIMappingBusProto::kLimiterThresholdFieldNumber, MIDIMappingProto::kLimiterThresholdBankFieldNumber,
92 value, bind(&ControllerReceiver::set_limiter_threshold, receiver, _2));
93 match_controller(controller, MIDIMappingBusProto::kMakeupGainFieldNumber, MIDIMappingProto::kMakeupGainBankFieldNumber,
94 value, bind(&ControllerReceiver::set_makeup_gain, receiver, _2));
97 match_controller(controller, MIDIMappingBusProto::kStereoWidthFieldNumber, MIDIMappingProto::kStereoWidthBankFieldNumber,
98 value, bind(&ControllerReceiver::set_stereo_width, receiver, _1, _2));
99 match_controller(controller, MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber,
100 value, bind(&ControllerReceiver::set_treble, receiver, _1, _2));
101 match_controller(controller, MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber,
102 value, bind(&ControllerReceiver::set_mid, receiver, _1, _2));
103 match_controller(controller, MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber,
104 value, bind(&ControllerReceiver::set_bass, receiver, _1, _2));
105 match_controller(controller, MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber,
106 value, bind(&ControllerReceiver::set_gain, receiver, _1, _2));
107 match_controller(controller, MIDIMappingBusProto::kCompressorThresholdFieldNumber, MIDIMappingProto::kCompressorThresholdBankFieldNumber,
108 value, bind(&ControllerReceiver::set_compressor_threshold, receiver, _1, _2));
109 match_controller(controller, MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber,
110 value, bind(&ControllerReceiver::set_fader, receiver, _1, _2));
113 void MIDIMapper::note_on_received(int note)
115 lock_guard<mutex> lock(mu);
116 receiver->note_on(note);
118 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
119 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
120 if (bus_mapping.has_prev_bank() &&
121 bus_mapping.prev_bank().note_number() == note) {
122 current_controller_bank = (current_controller_bank + num_controller_banks - 1) % num_controller_banks;
124 update_lights_lock_held();
126 if (bus_mapping.has_next_bank() &&
127 bus_mapping.next_bank().note_number() == note) {
128 current_controller_bank = (current_controller_bank + 1) % num_controller_banks;
130 update_lights_lock_held();
132 if (bus_mapping.has_select_bank_1() &&
133 bus_mapping.select_bank_1().note_number() == note) {
134 current_controller_bank = 0;
136 update_lights_lock_held();
138 if (bus_mapping.has_select_bank_2() &&
139 bus_mapping.select_bank_2().note_number() == note &&
140 num_controller_banks >= 2) {
141 current_controller_bank = 1;
143 update_lights_lock_held();
145 if (bus_mapping.has_select_bank_3() &&
146 bus_mapping.select_bank_3().note_number() == note &&
147 num_controller_banks >= 3) {
148 current_controller_bank = 2;
150 update_lights_lock_held();
152 if (bus_mapping.has_select_bank_4() &&
153 bus_mapping.select_bank_4().note_number() == note &&
154 num_controller_banks >= 4) {
155 current_controller_bank = 3;
157 update_lights_lock_held();
159 if (bus_mapping.has_select_bank_5() &&
160 bus_mapping.select_bank_5().note_number() == note &&
161 num_controller_banks >= 5) {
162 current_controller_bank = 4;
164 update_lights_lock_held();
168 match_button(note, MIDIMappingBusProto::kToggleLocutFieldNumber, MIDIMappingProto::kToggleLocutBankFieldNumber,
169 bind(&ControllerReceiver::toggle_locut, receiver, _1));
170 match_button(note, MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber, MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber,
171 bind(&ControllerReceiver::toggle_auto_gain_staging, receiver, _1));
172 match_button(note, MIDIMappingBusProto::kToggleCompressorFieldNumber, MIDIMappingProto::kToggleCompressorBankFieldNumber,
173 bind(&ControllerReceiver::toggle_compressor, receiver, _1));
174 match_button(note, MIDIMappingBusProto::kClearPeakFieldNumber, MIDIMappingProto::kClearPeakBankFieldNumber,
175 bind(&ControllerReceiver::clear_peak, receiver, _1));
176 match_button(note, MIDIMappingBusProto::kToggleMuteFieldNumber, MIDIMappingProto::kClearPeakBankFieldNumber,
177 bind(&ControllerReceiver::toggle_mute, receiver, _1));
178 match_button(note, MIDIMappingBusProto::kToggleLimiterFieldNumber, MIDIMappingProto::kToggleLimiterBankFieldNumber,
179 bind(&ControllerReceiver::toggle_limiter, receiver));
180 match_button(note, MIDIMappingBusProto::kToggleAutoMakeupGainFieldNumber, MIDIMappingProto::kToggleAutoMakeupGainBankFieldNumber,
181 bind(&ControllerReceiver::toggle_auto_makeup_gain, receiver));
182 match_button(note, MIDIMappingBusProto::kSwitchVideoChannelFieldNumber, MIDIMappingProto::kSwitchVideoChannelBankFieldNumber,
183 bind(&ControllerReceiver::switch_video_channel, receiver, _1));
184 match_button(note, MIDIMappingBusProto::kApplyTransitionFieldNumber, MIDIMappingProto::kApplyTransitionBankFieldNumber,
185 bind(&ControllerReceiver::apply_transition, receiver, _1));
186 match_button(note, MIDIMappingBusProto::kPrevAudioViewFieldNumber, MIDIMappingProto::kPrevAudioViewBankFieldNumber,
187 bind(&ControllerReceiver::prev_audio_view, receiver));
188 match_button(note, MIDIMappingBusProto::kNextAudioViewFieldNumber, MIDIMappingProto::kNextAudioViewBankFieldNumber,
189 bind(&ControllerReceiver::prev_audio_view, receiver));
190 match_button(note, MIDIMappingBusProto::kBeginNewVideoSegmentFieldNumber, MIDIMappingProto::kBeginNewVideoSegmentBankFieldNumber,
191 bind(&ControllerReceiver::begin_new_segment, receiver));
192 match_button(note, MIDIMappingBusProto::kExitFieldNumber, MIDIMappingProto::kExitBankFieldNumber,
193 bind(&ControllerReceiver::exit, receiver));
196 void MIDIMapper::update_num_subscribers(unsigned num_subscribers)
198 num_subscribed_ports = num_subscribers;
202 void MIDIMapper::match_controller(int controller, int field_number, int bank_field_number, float value, function<void(unsigned, float)> func)
204 if (bank_mismatch(bank_field_number)) {
208 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
209 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
210 if (match_controller_helper(bus_mapping, field_number, controller)) {
211 func(bus_idx, value);
216 void MIDIMapper::match_button(int note, int field_number, int bank_field_number, function<void(unsigned)> func)
218 if (bank_mismatch(bank_field_number)) {
222 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
223 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
224 if (match_button_helper(bus_mapping, field_number, note)) {
230 bool MIDIMapper::has_active_controller(unsigned bus_idx, int field_number, int bank_field_number)
232 if (bank_mismatch(bank_field_number)) {
236 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
237 const FieldDescriptor *descriptor = bus_mapping.GetDescriptor()->FindFieldByNumber(field_number);
238 const Reflection *bus_reflection = bus_mapping.GetReflection();
239 return bus_reflection->HasField(bus_mapping, descriptor);
242 bool MIDIMapper::bank_mismatch(int bank_field_number)
244 return !match_bank_helper(*mapping_proto, bank_field_number, current_controller_bank);
247 void MIDIMapper::refresh_highlights()
249 receiver->clear_all_highlights();
253 void MIDIMapper::refresh_lights()
255 lock_guard<mutex> lock(mu);
256 update_lights_lock_held();
259 void MIDIMapper::update_highlights()
261 if (num_subscribed_ports.load() == 0) {
262 receiver->clear_all_highlights();
266 // Global controllers.
267 bool highlight_locut = false;
268 bool highlight_limiter_threshold = false;
269 bool highlight_makeup_gain = false;
270 bool highlight_toggle_limiter = false;
271 bool highlight_toggle_auto_makeup_gain = false;
272 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
273 if (has_active_controller(
274 bus_idx, MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber)) {
275 highlight_locut = true;
277 if (has_active_controller(
278 bus_idx, MIDIMappingBusProto::kLimiterThresholdFieldNumber, MIDIMappingProto::kLimiterThresholdBankFieldNumber)) {
279 highlight_limiter_threshold = true;
281 if (has_active_controller(
282 bus_idx, MIDIMappingBusProto::kMakeupGainFieldNumber, MIDIMappingProto::kMakeupGainBankFieldNumber)) {
283 highlight_makeup_gain = true;
285 if (has_active_controller(
286 bus_idx, MIDIMappingBusProto::kToggleLimiterFieldNumber, MIDIMappingProto::kToggleLimiterBankFieldNumber)) {
287 highlight_toggle_limiter = true;
289 if (has_active_controller(
290 bus_idx, MIDIMappingBusProto::kToggleAutoMakeupGainFieldNumber, MIDIMappingProto::kToggleAutoMakeupGainBankFieldNumber)) {
291 highlight_toggle_auto_makeup_gain = true;
294 receiver->highlight_locut(highlight_locut);
295 receiver->highlight_limiter_threshold(highlight_limiter_threshold);
296 receiver->highlight_makeup_gain(highlight_makeup_gain);
297 receiver->highlight_toggle_limiter(highlight_toggle_limiter);
298 receiver->highlight_toggle_auto_makeup_gain(highlight_toggle_auto_makeup_gain);
300 // Per-bus controllers.
301 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
302 receiver->highlight_stereo_width(bus_idx, has_active_controller(
303 bus_idx, MIDIMappingBusProto::kStereoWidthFieldNumber, MIDIMappingProto::kStereoWidthBankFieldNumber));
304 receiver->highlight_treble(bus_idx, has_active_controller(
305 bus_idx, MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber));
306 receiver->highlight_mid(bus_idx, has_active_controller(
307 bus_idx, MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber));
308 receiver->highlight_bass(bus_idx, has_active_controller(
309 bus_idx, MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber));
310 receiver->highlight_gain(bus_idx, has_active_controller(
311 bus_idx, MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber));
312 receiver->highlight_compressor_threshold(bus_idx, has_active_controller(
313 bus_idx, MIDIMappingBusProto::kCompressorThresholdFieldNumber, MIDIMappingProto::kCompressorThresholdBankFieldNumber));
314 receiver->highlight_fader(bus_idx, has_active_controller(
315 bus_idx, MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber));
316 receiver->highlight_mute(bus_idx, has_active_controller(
317 bus_idx, MIDIMappingBusProto::kToggleMuteFieldNumber, MIDIMappingProto::kToggleMuteBankFieldNumber));
318 receiver->highlight_toggle_locut(bus_idx, has_active_controller(
319 bus_idx, MIDIMappingBusProto::kToggleLocutFieldNumber, MIDIMappingProto::kToggleLocutBankFieldNumber));
320 receiver->highlight_toggle_auto_gain_staging(bus_idx, has_active_controller(
321 bus_idx, MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber, MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber));
322 receiver->highlight_toggle_compressor(bus_idx, has_active_controller(
323 bus_idx, MIDIMappingBusProto::kToggleCompressorFieldNumber, MIDIMappingProto::kToggleCompressorBankFieldNumber));
327 void MIDIMapper::update_lights_lock_held()
329 if (global_audio_mixer == nullptr) {
333 map<MIDIDevice::LightKey, uint8_t> active_lights; // Desired state.
334 if (current_controller_bank == 0) {
335 activate_lights_all_buses(MIDIMappingBusProto::kBank1IsSelectedFieldNumber, &active_lights);
337 if (current_controller_bank == 1) {
338 activate_lights_all_buses(MIDIMappingBusProto::kBank2IsSelectedFieldNumber, &active_lights);
340 if (current_controller_bank == 2) {
341 activate_lights_all_buses(MIDIMappingBusProto::kBank3IsSelectedFieldNumber, &active_lights);
343 if (current_controller_bank == 3) {
344 activate_lights_all_buses(MIDIMappingBusProto::kBank4IsSelectedFieldNumber, &active_lights);
346 if (current_controller_bank == 4) {
347 activate_lights_all_buses(MIDIMappingBusProto::kBank5IsSelectedFieldNumber, &active_lights);
349 if (global_audio_mixer->get_limiter_enabled()) {
350 activate_lights_all_buses(MIDIMappingBusProto::kLimiterIsOnFieldNumber, &active_lights);
352 if (global_audio_mixer->get_final_makeup_gain_auto()) {
353 activate_lights_all_buses(MIDIMappingBusProto::kAutoMakeupGainIsOnFieldNumber, &active_lights);
355 unsigned num_buses = min<unsigned>(global_audio_mixer->num_buses(), mapping_proto->bus_mapping_size());
356 for (unsigned bus_idx = 0; bus_idx < num_buses; ++bus_idx) {
357 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
358 if (global_audio_mixer->get_mute(bus_idx)) {
359 activate_mapped_light(bus_mapping, MIDIMappingBusProto::kIsMutedFieldNumber, &active_lights);
361 if (global_audio_mixer->get_locut_enabled(bus_idx)) {
362 activate_mapped_light(bus_mapping, MIDIMappingBusProto::kLocutIsOnFieldNumber, &active_lights);
364 if (global_audio_mixer->get_gain_staging_auto(bus_idx)) {
365 activate_mapped_light(bus_mapping, MIDIMappingBusProto::kAutoGainStagingIsOnFieldNumber, &active_lights);
367 if (global_audio_mixer->get_compressor_enabled(bus_idx)) {
368 activate_mapped_light(bus_mapping, MIDIMappingBusProto::kCompressorIsOnFieldNumber, &active_lights);
370 if (has_peaked[bus_idx]) {
371 activate_mapped_light(bus_mapping, MIDIMappingBusProto::kHasPeakedFieldNumber, &active_lights);
375 midi_device.update_lights(active_lights);
378 void MIDIMapper::activate_lights_all_buses(int field_number, map<MIDIDevice::LightKey, uint8_t> *active_lights)
380 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
381 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
382 activate_mapped_light(bus_mapping, field_number, active_lights);