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>
23 #include "futatabi_midi_mapping.pb.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;
61 void MIDIMapper::start_thread()
63 midi_device.start_thread();
66 const MIDIMappingProto &MIDIMapper::get_current_mapping() const
68 lock_guard<mutex> lock(mu);
69 return *mapping_proto;
72 ControllerReceiver *MIDIMapper::set_receiver(ControllerReceiver *new_receiver)
74 lock_guard<mutex> lock(mu);
75 swap(receiver, new_receiver);
76 return new_receiver; // Now old receiver.
79 void MIDIMapper::controller_received(int controller, int value_int)
81 int delta_value = value_int - 64; // For infinite controllers such as jog.
82 float value = map_controller_to_float(controller, value_int);
84 receiver->controller_changed(controller);
86 match_controller(controller, MIDIMappingProto::kJogFieldNumber, MIDIMappingProto::kJogBankFieldNumber,
87 delta_value, bind(&ControllerReceiver::jog, receiver, _1));
89 // Speed goes from 0.0 to 2.0 (the receiver will clamp).
90 match_controller(controller, MIDIMappingProto::kMasterSpeedFieldNumber, MIDIMappingProto::kMasterSpeedBankFieldNumber,
91 value * 2.0, bind(&ControllerReceiver::set_master_speed, receiver, _1));
94 void MIDIMapper::note_on_received(int note)
96 lock_guard<mutex> lock(mu);
97 receiver->note_on(note);
99 if (mapping_proto->has_prev_bank() &&
100 mapping_proto->prev_bank().note_number() == note) {
101 current_controller_bank = (current_controller_bank + num_controller_banks - 1) % num_controller_banks;
102 update_lights_lock_held();
104 if (mapping_proto->has_next_bank() &&
105 mapping_proto->next_bank().note_number() == note) {
106 current_controller_bank = (current_controller_bank + 1) % num_controller_banks;
107 update_lights_lock_held();
109 if (mapping_proto->has_select_bank_1() &&
110 mapping_proto->select_bank_1().note_number() == note) {
111 current_controller_bank = 0;
112 update_lights_lock_held();
114 if (mapping_proto->has_select_bank_2() &&
115 mapping_proto->select_bank_2().note_number() == note &&
116 num_controller_banks >= 2) {
117 current_controller_bank = 1;
118 update_lights_lock_held();
120 if (mapping_proto->has_select_bank_3() &&
121 mapping_proto->select_bank_3().note_number() == note &&
122 num_controller_banks >= 3) {
123 current_controller_bank = 2;
124 update_lights_lock_held();
126 if (mapping_proto->has_select_bank_4() &&
127 mapping_proto->select_bank_4().note_number() == note &&
128 num_controller_banks >= 4) {
129 current_controller_bank = 3;
130 update_lights_lock_held();
132 if (mapping_proto->has_select_bank_5() &&
133 mapping_proto->select_bank_5().note_number() == note &&
134 num_controller_banks >= 5) {
135 current_controller_bank = 4;
136 update_lights_lock_held();
139 match_button(note, MIDIMappingProto::kPreviewFieldNumber, MIDIMappingProto::kPreviewBankFieldNumber,
140 bind(&ControllerReceiver::preview, receiver));
141 match_button(note, MIDIMappingProto::kQueueFieldNumber, MIDIMappingProto::kQueueBankFieldNumber,
142 bind(&ControllerReceiver::queue, receiver));
143 match_button(note, MIDIMappingProto::kPlayFieldNumber, MIDIMappingProto::kPlayBankFieldNumber,
144 bind(&ControllerReceiver::play, receiver));
145 match_button(note, MIDIMappingProto::kToggleLockFieldNumber, MIDIMappingProto::kToggleLockBankFieldNumber,
146 bind(&ControllerReceiver::toggle_lock, receiver));
148 unsigned num_cameras = std::min(MAX_STREAMS, mapping_proto->camera_size());
149 for (unsigned camera_idx = 0; camera_idx < num_cameras; ++camera_idx) {
150 const CameraMIDIMappingProto &camera = mapping_proto->camera(camera_idx);
151 if (match_bank_helper(camera, CameraMIDIMappingProto::kBankFieldNumber, current_controller_bank) &&
152 match_button_helper(camera, CameraMIDIMappingProto::kButtonFieldNumber, note)) {
153 receiver->switch_camera(camera_idx);
157 match_button(note, MIDIMappingProto::kCueInFieldNumber, MIDIMappingProto::kCueInBankFieldNumber,
158 bind(&ControllerReceiver::cue_in, receiver));
159 match_button(note, MIDIMappingProto::kCueOutFieldNumber, MIDIMappingProto::kCueOutBankFieldNumber,
160 bind(&ControllerReceiver::cue_out, receiver));
163 void MIDIMapper::match_controller(int controller, int field_number, int bank_field_number, float value, function<void(float)> func)
165 if (bank_mismatch(bank_field_number)) {
169 if (match_controller_helper(*mapping_proto, field_number, controller)) {
174 void MIDIMapper::match_button(int note, int field_number, int bank_field_number, function<void()> func)
176 if (bank_mismatch(bank_field_number)) {
180 if (match_button_helper(*mapping_proto, field_number, note)) {
185 bool MIDIMapper::has_active_controller(int field_number, int bank_field_number)
187 if (bank_mismatch(bank_field_number)) {
191 const FieldDescriptor *descriptor = mapping_proto->GetDescriptor()->FindFieldByNumber(field_number);
192 const Reflection *reflection = mapping_proto->GetReflection();
193 return reflection->HasField(*mapping_proto, descriptor);
196 bool MIDIMapper::bank_mismatch(int bank_field_number)
198 return !match_bank_helper(*mapping_proto, bank_field_number, current_controller_bank);
201 void MIDIMapper::refresh_lights()
203 lock_guard<mutex> lock(mu);
204 update_lights_lock_held();
207 void MIDIMapper::update_lights_lock_held()
209 map<unsigned, uint8_t> active_lights; // Desired state.
210 if (current_controller_bank == 0) {
211 activate_mapped_light(*mapping_proto, MIDIMappingProto::kBank1IsSelectedFieldNumber, &active_lights);
213 if (current_controller_bank == 1) {
214 activate_mapped_light(*mapping_proto, MIDIMappingProto::kBank2IsSelectedFieldNumber, &active_lights);
216 if (current_controller_bank == 2) {
217 activate_mapped_light(*mapping_proto, MIDIMappingProto::kBank3IsSelectedFieldNumber, &active_lights);
219 if (current_controller_bank == 3) {
220 activate_mapped_light(*mapping_proto, MIDIMappingProto::kBank4IsSelectedFieldNumber, &active_lights);
222 if (current_controller_bank == 4) {
223 activate_mapped_light(*mapping_proto, MIDIMappingProto::kBank5IsSelectedFieldNumber, &active_lights);
225 if (preview_enabled_light) {
226 activate_mapped_light(*mapping_proto, MIDIMappingProto::kPreviewEnabledFieldNumber, &active_lights);
228 if (queue_enabled_light) {
229 activate_mapped_light(*mapping_proto, MIDIMappingProto::kQueueEnabledFieldNumber, &active_lights);
231 if (play_enabled_light) {
232 activate_mapped_light(*mapping_proto, MIDIMappingProto::kPlayEnabledFieldNumber, &active_lights);
235 activate_mapped_light(*mapping_proto, MIDIMappingProto::kLockedFieldNumber, &active_lights);
237 if (current_highlighted_camera >= 0 && current_highlighted_camera < mapping_proto->camera_size()) {
238 const CameraMIDIMappingProto &camera = mapping_proto->camera(current_highlighted_camera);
239 activate_mapped_light(camera, CameraMIDIMappingProto::kIsCurrentFieldNumber, &active_lights);
242 // These are always enabled right now.
243 activate_mapped_light(*mapping_proto, MIDIMappingProto::kCueInFieldNumber, &active_lights);
244 activate_mapped_light(*mapping_proto, MIDIMappingProto::kCueOutFieldNumber, &active_lights);
246 midi_device.update_lights(active_lights);