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 "midi_mapping.pb.h"
23 #include "shared/midi_mapper_util.h"
24 #include "shared/text_proto.h"
26 using namespace google::protobuf;
28 using namespace std::placeholders;
32 double map_controller_to_float(int val)
34 // Slightly hackish mapping so that we can represent exactly 0.0, 0.5 and 1.0.
37 } else if (val >= 127) {
40 return (val + 0.5) / 127.0;
46 MIDIMapper::MIDIMapper(ControllerReceiver *receiver)
47 : receiver(receiver), mapping_proto(new MIDIMappingProto), midi_device(this)
51 MIDIMapper::~MIDIMapper() {}
53 bool load_midi_mapping_from_file(const string &filename, MIDIMappingProto *new_mapping)
55 return load_proto_from_file(filename, new_mapping);
58 bool save_midi_mapping_to_file(const MIDIMappingProto &mapping_proto, const string &filename)
60 return save_proto_to_file(mapping_proto, filename);
63 void MIDIMapper::set_midi_mapping(const MIDIMappingProto &new_mapping)
65 lock_guard<mutex> lock(mu);
67 mapping_proto->CopyFrom(new_mapping);
69 mapping_proto.reset(new MIDIMappingProto(new_mapping));
72 num_controller_banks = min(max(mapping_proto->num_controller_banks(), 1), 5);
73 current_controller_bank = 0;
75 receiver->clear_all_highlights();
79 void MIDIMapper::start_thread()
81 midi_device.start_thread();
84 const MIDIMappingProto &MIDIMapper::get_current_mapping() const
86 lock_guard<mutex> lock(mu);
87 return *mapping_proto;
90 ControllerReceiver *MIDIMapper::set_receiver(ControllerReceiver *new_receiver)
92 lock_guard<mutex> lock(mu);
93 swap(receiver, new_receiver);
94 return new_receiver; // Now old receiver.
97 void MIDIMapper::controller_received(int controller, int value_int)
99 const float value = map_controller_to_float(value_int);
101 receiver->controller_changed(controller);
103 // Global controllers.
104 match_controller(controller, MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber,
105 value, bind(&ControllerReceiver::set_locut, receiver, _2));
106 match_controller(controller, MIDIMappingBusProto::kLimiterThresholdFieldNumber, MIDIMappingProto::kLimiterThresholdBankFieldNumber,
107 value, bind(&ControllerReceiver::set_limiter_threshold, receiver, _2));
108 match_controller(controller, MIDIMappingBusProto::kMakeupGainFieldNumber, MIDIMappingProto::kMakeupGainBankFieldNumber,
109 value, bind(&ControllerReceiver::set_makeup_gain, receiver, _2));
112 match_controller(controller, MIDIMappingBusProto::kStereoWidthFieldNumber, MIDIMappingProto::kStereoWidthBankFieldNumber,
113 value, bind(&ControllerReceiver::set_stereo_width, receiver, _1, _2));
114 match_controller(controller, MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber,
115 value, bind(&ControllerReceiver::set_treble, receiver, _1, _2));
116 match_controller(controller, MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber,
117 value, bind(&ControllerReceiver::set_mid, receiver, _1, _2));
118 match_controller(controller, MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber,
119 value, bind(&ControllerReceiver::set_bass, receiver, _1, _2));
120 match_controller(controller, MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber,
121 value, bind(&ControllerReceiver::set_gain, receiver, _1, _2));
122 match_controller(controller, MIDIMappingBusProto::kCompressorThresholdFieldNumber, MIDIMappingProto::kCompressorThresholdBankFieldNumber,
123 value, bind(&ControllerReceiver::set_compressor_threshold, receiver, _1, _2));
124 match_controller(controller, MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber,
125 value, bind(&ControllerReceiver::set_fader, receiver, _1, _2));
128 void MIDIMapper::note_on_received(int note)
130 lock_guard<mutex> lock(mu);
131 receiver->note_on(note);
133 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
134 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
135 if (bus_mapping.has_prev_bank() &&
136 bus_mapping.prev_bank().note_number() == note) {
137 current_controller_bank = (current_controller_bank + num_controller_banks - 1) % num_controller_banks;
139 update_lights_lock_held();
141 if (bus_mapping.has_next_bank() &&
142 bus_mapping.next_bank().note_number() == note) {
143 current_controller_bank = (current_controller_bank + 1) % num_controller_banks;
145 update_lights_lock_held();
147 if (bus_mapping.has_select_bank_1() &&
148 bus_mapping.select_bank_1().note_number() == note) {
149 current_controller_bank = 0;
151 update_lights_lock_held();
153 if (bus_mapping.has_select_bank_2() &&
154 bus_mapping.select_bank_2().note_number() == note &&
155 num_controller_banks >= 2) {
156 current_controller_bank = 1;
158 update_lights_lock_held();
160 if (bus_mapping.has_select_bank_3() &&
161 bus_mapping.select_bank_3().note_number() == note &&
162 num_controller_banks >= 3) {
163 current_controller_bank = 2;
165 update_lights_lock_held();
167 if (bus_mapping.has_select_bank_4() &&
168 bus_mapping.select_bank_4().note_number() == note &&
169 num_controller_banks >= 4) {
170 current_controller_bank = 3;
172 update_lights_lock_held();
174 if (bus_mapping.has_select_bank_5() &&
175 bus_mapping.select_bank_5().note_number() == note &&
176 num_controller_banks >= 5) {
177 current_controller_bank = 4;
179 update_lights_lock_held();
183 match_button(note, MIDIMappingBusProto::kToggleLocutFieldNumber, MIDIMappingProto::kToggleLocutBankFieldNumber,
184 bind(&ControllerReceiver::toggle_locut, receiver, _1));
185 match_button(note, MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber, MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber,
186 bind(&ControllerReceiver::toggle_auto_gain_staging, receiver, _1));
187 match_button(note, MIDIMappingBusProto::kToggleCompressorFieldNumber, MIDIMappingProto::kToggleCompressorBankFieldNumber,
188 bind(&ControllerReceiver::toggle_compressor, receiver, _1));
189 match_button(note, MIDIMappingBusProto::kClearPeakFieldNumber, MIDIMappingProto::kClearPeakBankFieldNumber,
190 bind(&ControllerReceiver::clear_peak, receiver, _1));
191 match_button(note, MIDIMappingBusProto::kToggleMuteFieldNumber, MIDIMappingProto::kClearPeakBankFieldNumber,
192 bind(&ControllerReceiver::toggle_mute, receiver, _1));
193 match_button(note, MIDIMappingBusProto::kToggleLimiterFieldNumber, MIDIMappingProto::kToggleLimiterBankFieldNumber,
194 bind(&ControllerReceiver::toggle_limiter, receiver));
195 match_button(note, MIDIMappingBusProto::kToggleAutoMakeupGainFieldNumber, MIDIMappingProto::kToggleAutoMakeupGainBankFieldNumber,
196 bind(&ControllerReceiver::toggle_auto_makeup_gain, receiver));
199 void MIDIMapper::update_num_subscribers(unsigned num_subscribers)
201 num_subscribed_ports = num_subscribers;
205 void MIDIMapper::match_controller(int controller, int field_number, int bank_field_number, float value, function<void(unsigned, float)> func)
207 if (bank_mismatch(bank_field_number)) {
211 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
212 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
213 if (match_controller_helper(bus_mapping, field_number, controller)) {
214 func(bus_idx, value);
219 void MIDIMapper::match_button(int note, int field_number, int bank_field_number, function<void(unsigned)> func)
221 if (bank_mismatch(bank_field_number)) {
225 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
226 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
227 if (match_button_helper(bus_mapping, field_number, note)) {
233 bool MIDIMapper::has_active_controller(unsigned bus_idx, int field_number, int bank_field_number)
235 if (bank_mismatch(bank_field_number)) {
239 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
240 const FieldDescriptor *descriptor = bus_mapping.GetDescriptor()->FindFieldByNumber(field_number);
241 const Reflection *bus_reflection = bus_mapping.GetReflection();
242 return bus_reflection->HasField(bus_mapping, descriptor);
245 bool MIDIMapper::bank_mismatch(int bank_field_number)
247 return !match_bank_helper(*mapping_proto, bank_field_number, current_controller_bank);
250 void MIDIMapper::refresh_highlights()
252 receiver->clear_all_highlights();
256 void MIDIMapper::refresh_lights()
258 lock_guard<mutex> lock(mu);
259 update_lights_lock_held();
262 void MIDIMapper::update_highlights()
264 if (num_subscribed_ports.load() == 0) {
265 receiver->clear_all_highlights();
269 // Global controllers.
270 bool highlight_locut = false;
271 bool highlight_limiter_threshold = false;
272 bool highlight_makeup_gain = false;
273 bool highlight_toggle_limiter = false;
274 bool highlight_toggle_auto_makeup_gain = false;
275 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
276 if (has_active_controller(
277 bus_idx, MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber)) {
278 highlight_locut = true;
280 if (has_active_controller(
281 bus_idx, MIDIMappingBusProto::kLimiterThresholdFieldNumber, MIDIMappingProto::kLimiterThresholdBankFieldNumber)) {
282 highlight_limiter_threshold = true;
284 if (has_active_controller(
285 bus_idx, MIDIMappingBusProto::kMakeupGainFieldNumber, MIDIMappingProto::kMakeupGainBankFieldNumber)) {
286 highlight_makeup_gain = true;
288 if (has_active_controller(
289 bus_idx, MIDIMappingBusProto::kToggleLimiterFieldNumber, MIDIMappingProto::kToggleLimiterBankFieldNumber)) {
290 highlight_toggle_limiter = true;
292 if (has_active_controller(
293 bus_idx, MIDIMappingBusProto::kToggleAutoMakeupGainFieldNumber, MIDIMappingProto::kToggleAutoMakeupGainBankFieldNumber)) {
294 highlight_toggle_auto_makeup_gain = true;
297 receiver->highlight_locut(highlight_locut);
298 receiver->highlight_limiter_threshold(highlight_limiter_threshold);
299 receiver->highlight_makeup_gain(highlight_makeup_gain);
300 receiver->highlight_toggle_limiter(highlight_toggle_limiter);
301 receiver->highlight_toggle_auto_makeup_gain(highlight_toggle_auto_makeup_gain);
303 // Per-bus controllers.
304 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
305 receiver->highlight_stereo_width(bus_idx, has_active_controller(
306 bus_idx, MIDIMappingBusProto::kStereoWidthFieldNumber, MIDIMappingProto::kStereoWidthBankFieldNumber));
307 receiver->highlight_treble(bus_idx, has_active_controller(
308 bus_idx, MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber));
309 receiver->highlight_mid(bus_idx, has_active_controller(
310 bus_idx, MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber));
311 receiver->highlight_bass(bus_idx, has_active_controller(
312 bus_idx, MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber));
313 receiver->highlight_gain(bus_idx, has_active_controller(
314 bus_idx, MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber));
315 receiver->highlight_compressor_threshold(bus_idx, has_active_controller(
316 bus_idx, MIDIMappingBusProto::kCompressorThresholdFieldNumber, MIDIMappingProto::kCompressorThresholdBankFieldNumber));
317 receiver->highlight_fader(bus_idx, has_active_controller(
318 bus_idx, MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber));
319 receiver->highlight_mute(bus_idx, has_active_controller(
320 bus_idx, MIDIMappingBusProto::kToggleMuteFieldNumber, MIDIMappingProto::kToggleMuteBankFieldNumber));
321 receiver->highlight_toggle_locut(bus_idx, has_active_controller(
322 bus_idx, MIDIMappingBusProto::kToggleLocutFieldNumber, MIDIMappingProto::kToggleLocutBankFieldNumber));
323 receiver->highlight_toggle_auto_gain_staging(bus_idx, has_active_controller(
324 bus_idx, MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber, MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber));
325 receiver->highlight_toggle_compressor(bus_idx, has_active_controller(
326 bus_idx, MIDIMappingBusProto::kToggleCompressorFieldNumber, MIDIMappingProto::kToggleCompressorBankFieldNumber));
330 void MIDIMapper::update_lights_lock_held()
332 if (global_audio_mixer == nullptr) {
336 set<unsigned> active_lights; // Desired state.
337 if (current_controller_bank == 0) {
338 activate_lights_all_buses(MIDIMappingBusProto::kBank1IsSelectedFieldNumber, &active_lights);
340 if (current_controller_bank == 1) {
341 activate_lights_all_buses(MIDIMappingBusProto::kBank2IsSelectedFieldNumber, &active_lights);
343 if (current_controller_bank == 2) {
344 activate_lights_all_buses(MIDIMappingBusProto::kBank3IsSelectedFieldNumber, &active_lights);
346 if (current_controller_bank == 3) {
347 activate_lights_all_buses(MIDIMappingBusProto::kBank4IsSelectedFieldNumber, &active_lights);
349 if (current_controller_bank == 4) {
350 activate_lights_all_buses(MIDIMappingBusProto::kBank5IsSelectedFieldNumber, &active_lights);
352 if (global_audio_mixer->get_limiter_enabled()) {
353 activate_lights_all_buses(MIDIMappingBusProto::kLimiterIsOnFieldNumber, &active_lights);
355 if (global_audio_mixer->get_final_makeup_gain_auto()) {
356 activate_lights_all_buses(MIDIMappingBusProto::kAutoMakeupGainIsOnFieldNumber, &active_lights);
358 unsigned num_buses = min<unsigned>(global_audio_mixer->num_buses(), mapping_proto->bus_mapping_size());
359 for (unsigned bus_idx = 0; bus_idx < num_buses; ++bus_idx) {
360 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
361 if (global_audio_mixer->get_mute(bus_idx)) {
362 activate_mapped_light(bus_mapping, MIDIMappingBusProto::kIsMutedFieldNumber, &active_lights);
364 if (global_audio_mixer->get_locut_enabled(bus_idx)) {
365 activate_mapped_light(bus_mapping, MIDIMappingBusProto::kLocutIsOnFieldNumber, &active_lights);
367 if (global_audio_mixer->get_gain_staging_auto(bus_idx)) {
368 activate_mapped_light(bus_mapping, MIDIMappingBusProto::kAutoGainStagingIsOnFieldNumber, &active_lights);
370 if (global_audio_mixer->get_compressor_enabled(bus_idx)) {
371 activate_mapped_light(bus_mapping, MIDIMappingBusProto::kCompressorIsOnFieldNumber, &active_lights);
373 if (has_peaked[bus_idx]) {
374 activate_mapped_light(bus_mapping, MIDIMappingBusProto::kHasPeakedFieldNumber, &active_lights);
378 midi_device.update_lights(active_lights);
381 void MIDIMapper::activate_lights_all_buses(int field_number, set<unsigned> *active_lights)
383 for (size_t bus_idx = 0; bus_idx < size_t(mapping_proto->bus_mapping_size()); ++bus_idx) {
384 const MIDIMappingBusProto &bus_mapping = mapping_proto->bus_mapping(bus_idx);
385 activate_mapped_light(bus_mapping, field_number, active_lights);