{
should_quit_fd = eventfd(/*initval=*/0, /*flags=*/0);
assert(should_quit_fd != -1);
+ refresh_highlights();
}
MIDIMapper::~MIDIMapper()
return true;
}
+bool save_midi_mapping_to_file(const MIDIMappingProto &mapping_proto, const string &filename)
+{
+ // Save to disk. We use the text format because it's friendlier
+ // for a user to look at and edit.
+ int fd = open(filename.c_str(), O_WRONLY | O_TRUNC | O_CREAT, 0666);
+ if (fd == -1) {
+ perror(filename.c_str());
+ return false;
+ }
+ io::FileOutputStream output(fd); // Takes ownership of fd.
+ if (!TextFormat::Print(mapping_proto, &output)) {
+ // TODO: Don't overwrite the old file (if any) on error.
+ output.Close();
+ return false;
+ }
+
+ output.Close();
+ return true;
+}
+
void MIDIMapper::set_midi_mapping(const MIDIMappingProto &new_mapping)
{
+ lock_guard<mutex> lock(mapping_mu);
if (mapping_proto) {
mapping_proto->CopyFrom(new_mapping);
} else {
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()
midi_thread = thread(&MIDIMapper::thread_func, this);
}
+const MIDIMappingProto &MIDIMapper::get_current_mapping() const
+{
+ lock_guard<mutex> lock(mapping_mu);
+ 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) { \
void MIDIMapper::thread_func()
{
- // TODO: Listen on any port, instead of hardcoding 24:0.
snd_seq_t *seq;
int err;
SND_SEQ_PORT_TYPE_MIDI_GENERIC |
SND_SEQ_PORT_TYPE_APPLICATION));
- snd_seq_addr_t addr;
- RETURN_ON_ERROR("snd_seq_parse_address", snd_seq_parse_address(seq, &addr, "24:0"));
- RETURN_ON_ERROR("snd_seq_connect_from", snd_seq_connect_from(seq, 0, addr.client, addr.port));
+ // Listen to the announce port (0:1), which will tell us about new ports.
+ RETURN_ON_ERROR("snd_seq_connect_from", snd_seq_connect_from(seq, 0, /*client=*/0, /*port=*/1));
+
+ // Now go through all ports and subscribe to them.
+ snd_seq_client_info_t *cinfo;
+ snd_seq_client_info_alloca(&cinfo);
+
+ snd_seq_client_info_set_client(cinfo, -1);
+ while (snd_seq_query_next_client(seq, cinfo) >= 0) {
+ int client = snd_seq_client_info_get_client(cinfo);
+
+ snd_seq_port_info_t *pinfo;
+ snd_seq_port_info_alloca(&pinfo);
+
+ snd_seq_port_info_set_client(pinfo, client);
+ snd_seq_port_info_set_port(pinfo, -1);
+ while (snd_seq_query_next_port(seq, pinfo) >= 0) {
+ constexpr int mask = SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ;
+ if ((snd_seq_port_info_get_capability(pinfo) & mask) == mask) {
+ subscribe_to_port(seq, *snd_seq_port_info_get_addr(pinfo));
+ }
+ }
+ }
int num_alsa_fds = snd_seq_poll_descriptors_count(seq, POLLIN);
unique_ptr<pollfd[]> fds(new pollfd[num_alsa_fds + 1]);
void MIDIMapper::handle_event(snd_seq_t *seq, snd_seq_event_t *event)
{
+ lock_guard<mutex> lock(mapping_mu);
switch (event->type) {
case SND_SEQ_EVENT_CONTROLLER: {
printf("Controller %d changed to %d\n", event->data.control.param, event->data.control.value);
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));
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();
}
}
bind(&ControllerReceiver::toggle_compressor, receiver, _1));
match_button(note, MIDIMappingBusProto::kClearPeakFieldNumber, MIDIMappingProto::kClearPeakBankFieldNumber,
bind(&ControllerReceiver::clear_peak, receiver, _1));
+ match_button(note, MIDIMappingBusProto::kToggleLimiterFieldNumber, MIDIMappingProto::kToggleLimiterBankFieldNumber,
+ bind(&ControllerReceiver::toggle_limiter, receiver));
+ match_button(note, MIDIMappingBusProto::kToggleAutoMakeupGainFieldNumber, MIDIMappingProto::kToggleAutoMakeupGainBankFieldNumber,
+ bind(&ControllerReceiver::toggle_auto_makeup_gain, receiver));
}
+ case SND_SEQ_EVENT_PORT_START:
+ subscribe_to_port(seq, event->data.addr);
+ break;
+ case SND_SEQ_EVENT_PORT_EXIT:
+ printf("MIDI port %d:%d went away.\n", event->data.addr.client, event->data.addr.port);
+ break;
case SND_SEQ_EVENT_NOTEOFF:
- // Ignore.
+ case SND_SEQ_EVENT_CLIENT_START:
+ case SND_SEQ_EVENT_CLIENT_EXIT:
+ case SND_SEQ_EVENT_CLIENT_CHANGE:
+ case SND_SEQ_EVENT_PORT_CHANGE:
+ case SND_SEQ_EVENT_PORT_SUBSCRIBED:
+ case SND_SEQ_EVENT_PORT_UNSUBSCRIBED:
break;
default:
printf("Ignoring MIDI event of unknown type %d.\n", event->type);
}
}
+void MIDIMapper::subscribe_to_port(snd_seq_t *seq, const snd_seq_addr_t &addr)
+{
+ // Client 0 is basically the system; ignore it.
+ if (addr.client == 0) {
+ return;
+ }
+
+ int err = snd_seq_connect_from(seq, 0, addr.client, addr.port);
+ if (err < 0) {
+ // Just print out a warning (i.e., don't die); it could
+ // very well just be e.g. another application.
+ printf("Couldn't subscribe to MIDI port %d:%d (%s).\n",
+ addr.client, addr.port, snd_strerror(err));
+ } else {
+ printf("Subscribed to MIDI port %d:%d.\n", addr.client, addr.port);
+ }
+}
+
void MIDIMapper::match_controller(int controller, int field_number, int bank_field_number, float value, function<void(unsigned, float)> func)
{
if (bank_mismatch(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);
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;
+ bool highlight_toggle_limiter = false;
+ bool highlight_toggle_auto_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;
+ }
+ if (has_active_controller(
+ bus_idx, MIDIMappingBusProto::kToggleLimiterFieldNumber, MIDIMappingProto::kToggleLimiterBankFieldNumber)) {
+ highlight_toggle_limiter = true;
+ }
+ if (has_active_controller(
+ bus_idx, MIDIMappingBusProto::kToggleAutoMakeupGainFieldNumber, MIDIMappingProto::kToggleAutoMakeupGainBankFieldNumber)) {
+ highlight_toggle_auto_makeup_gain = true;
+ }
+ }
+ receiver->highlight_locut(highlight_locut);
+ receiver->highlight_limiter_threshold(highlight_limiter_threshold);
+ receiver->highlight_makeup_gain(highlight_makeup_gain);
+ receiver->highlight_toggle_limiter(highlight_toggle_limiter);
+ receiver->highlight_toggle_auto_makeup_gain(highlight_toggle_auto_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));
+ }
+}
projects / nageru / blobdiff