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

   1 #include "input_mapping_dialog.h"
   2
   3 #include "post_to_main_thread.h"
   4 #include "ui_input_mapping.h"
   5
   6 #include <QComboBox>
   7 #include <QFileDialog>
   8 #include <QMessageBox>
   9
  10 using namespace std;
  11 using namespace std::placeholders;
  12
  13 InputMappingDialog::InputMappingDialog()
  14         : ui(new Ui::InputMappingDialog),
  15           mapping(global_audio_mixer->get_input_mapping()),
  16           old_mapping(mapping),
  17           devices(global_audio_mixer->get_devices())
  18 {
  19         ui->setupUi(this);
  20         ui->table->setSelectionBehavior(QAbstractItemView::SelectRows);
  21         ui->table->setSelectionMode(QAbstractItemView::SingleSelection);  // Makes implementing moving easier for now.
  22
  23         fill_ui_from_mapping(mapping);
  24         connect(ui->table, &QTableWidget::cellChanged, this, &InputMappingDialog::cell_changed);
  25         connect(ui->ok_cancel_buttons, &QDialogButtonBox::accepted, this, &InputMappingDialog::ok_clicked);
  26         connect(ui->ok_cancel_buttons, &QDialogButtonBox::rejected, this, &InputMappingDialog::cancel_clicked);
  27         connect(ui->add_button, &QPushButton::clicked, this, &InputMappingDialog::add_clicked);
  28         connect(ui->remove_button, &QPushButton::clicked, this, &InputMappingDialog::remove_clicked);
  29         connect(ui->up_button, &QPushButton::clicked, bind(&InputMappingDialog::updown_clicked, this, -1));
  30         connect(ui->down_button, &QPushButton::clicked, bind(&InputMappingDialog::updown_clicked, this, 1));
  31         connect(ui->save_button, &QPushButton::clicked, this, &InputMappingDialog::save_clicked);
  32         connect(ui->load_button, &QPushButton::clicked, this, &InputMappingDialog::load_clicked);
  33
  34         update_button_state();
  35         connect(ui->table, &QTableWidget::itemSelectionChanged, this, &InputMappingDialog::update_button_state);
  36
  37         saved_callback = global_audio_mixer->get_state_changed_callback();
  38         global_audio_mixer->set_state_changed_callback([this]{
  39                 post_to_main_thread([this]{
  40                         devices = global_audio_mixer->get_devices();
  41                         for (unsigned row = 0; row < mapping.buses.size(); ++row) {
  42                                 fill_row_from_bus(row, mapping.buses[row]);
  43                         }
  44                 });
  45         });
  46 }
  47
  48 InputMappingDialog::~InputMappingDialog()
  49 {
  50         global_audio_mixer->set_state_changed_callback(saved_callback);
  51 }
  52
  53 void InputMappingDialog::fill_ui_from_mapping(const InputMapping &mapping)
  54 {
  55         ui->table->verticalHeader()->hide();
  56         ui->table->horizontalHeader()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
  57         ui->table->horizontalHeader()->setSectionResizeMode(2, QHeaderView::ResizeToContents);
  58         ui->table->horizontalHeader()->setSectionResizeMode(3, QHeaderView::ResizeToContents);
  59         ui->table->horizontalHeader()->setSectionsClickable(false);
  60
  61         ui->table->setRowCount(mapping.buses.size());
  62         for (unsigned row = 0; row < mapping.buses.size(); ++row) {
  63                 fill_row_from_bus(row, mapping.buses[row]);
  64         }
  65 }
  66
  67 void InputMappingDialog::fill_row_from_bus(unsigned row, const InputMapping::Bus &bus)
  68 {
  69         QString name(QString::fromStdString(bus.name));
  70         ui->table->setItem(row, 0, new QTableWidgetItem(name));
  71
  72         // Card choices. If there's already a combobox here, we try to modify
  73         // the elements in-place, so that the UI doesn't go away under the user's feet
  74         // if they are in the process of choosing an item.
  75         QComboBox *card_combo = static_cast<QComboBox *>(ui->table->cellWidget(row, 1));
  76         if (card_combo == nullptr) {
  77                 card_combo = new QComboBox;
  78         }
  79         unsigned current_index = 0;
  80         if (card_combo->count() == 0) {
  81                 card_combo->addItem(QString("(none)   "));
  82         }
  83         for (const auto &spec_and_info : devices) {
  84                 QString label(QString::fromStdString(spec_and_info.second.display_name));
  85                 if (spec_and_info.first.type == InputSourceType::ALSA_INPUT) {
  86                         ALSAPool::Device::State state = global_audio_mixer->get_alsa_card_state(spec_and_info.first.index);
  87                         if (state == ALSAPool::Device::State::EMPTY) {
  88                                 continue;
  89                         } else if (state == ALSAPool::Device::State::STARTING) {
  90                                 label += " (busy)";
  91                         } else if (state == ALSAPool::Device::State::DEAD) {
  92                                 label += " (dead)";
  93                         }
  94                 }
  95                 ++current_index;
  96                 if (unsigned(card_combo->count()) > current_index) {
  97                         card_combo->setItemText(current_index, label + "   ");
  98                         card_combo->setItemData(current_index, qulonglong(DeviceSpec_to_key(spec_and_info.first)));
  99                 } else {
 100                         card_combo->addItem(
 101                                 label + "   ",
 102                                 qulonglong(DeviceSpec_to_key(spec_and_info.first)));
 103                 }
 104                 if (bus.device == spec_and_info.first) {
 105                         card_combo->setCurrentIndex(current_index);
 106                 }
 107         }
 108         // Remove any excess items from earlier. (This is only for paranoia;
 109         // they should be held, so it shouldn't matter.)
 110         while (unsigned(card_combo->count()) > current_index + 1) {
 111                 card_combo->removeItem(current_index + 1);
 112         }
 113         connect(card_combo, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
 114                 bind(&InputMappingDialog::card_selected, this, card_combo, row, _1));
 115         ui->table->setCellWidget(row, 1, card_combo);
 116
 117         setup_channel_choices_from_bus(row, bus);
 118 }
 119
 120 void InputMappingDialog::setup_channel_choices_from_bus(unsigned row, const InputMapping::Bus &bus)
 121 {
 122         // Left and right channel.
 123         // TODO: If there's already a widget here, modify it instead of creating a new one,
 124         // as we do with card choices.
 125         for (unsigned channel = 0; channel < 2; ++channel) {
 126                 QComboBox *channel_combo = new QComboBox;
 127                 channel_combo->addItem(QString("(none)"));
 128                 if (bus.device.type == InputSourceType::CAPTURE_CARD ||
 129                     bus.device.type == InputSourceType::ALSA_INPUT) {
 130                         auto device_it = devices.find(bus.device);
 131                         assert(device_it != devices.end());
 132                         unsigned num_device_channels = device_it->second.num_channels;
 133                         for (unsigned source = 0; source < num_device_channels; ++source) {
 134                                 char buf[256];
 135                                 snprintf(buf, sizeof(buf), "Channel %u   ", source + 1);
 136                                 channel_combo->addItem(QString(buf));
 137                         }
 138                         channel_combo->setCurrentIndex(bus.source_channel[channel] + 1);
 139                 } else {
 140                         channel_combo->setCurrentIndex(0);
 141                 }
 142                 connect(channel_combo, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
 143                         bind(&InputMappingDialog::channel_selected, this, row, channel, _1));
 144                 ui->table->setCellWidget(row, 2 + channel, channel_combo);
 145         }
 146 }
 147
 148 void InputMappingDialog::ok_clicked()
 149 {
 150         global_audio_mixer->set_state_changed_callback(saved_callback);
 151         global_audio_mixer->set_input_mapping(mapping);
 152         accept();
 153 }
 154
 155 void InputMappingDialog::cancel_clicked()
 156 {
 157         global_audio_mixer->set_state_changed_callback(saved_callback);
 158         global_audio_mixer->set_input_mapping(old_mapping);
 159         reject();
 160 }
 161
 162 void InputMappingDialog::cell_changed(int row, int column)
 163 {
 164         if (column != 0) {
 165                 // Spurious; only really the name column should fire these.
 166                 return;
 167         }
 168         mapping.buses[row].name = ui->table->item(row, column)->text().toStdString();
 169 }
 170
 171 void InputMappingDialog::card_selected(QComboBox *card_combo, unsigned row, int index)
 172 {
 173         uint64_t key = card_combo->itemData(index).toULongLong();
 174         mapping.buses[row].device = key_to_DeviceSpec(key);
 175         setup_channel_choices_from_bus(row, mapping.buses[row]);
 176 }
 177
 178 void InputMappingDialog::channel_selected(unsigned row, unsigned channel, int index)
 179 {
 180         mapping.buses[row].source_channel[channel] = index - 1;
 181 }
 182
 183 void InputMappingDialog::add_clicked()
 184 {
 185         QTableWidgetSelectionRange all(0, 0, ui->table->rowCount() - 1, ui->table->columnCount() - 1);
 186         ui->table->setRangeSelected(all, false);
 187
 188         InputMapping::Bus new_bus;
 189         new_bus.name = "New input";
 190         new_bus.device.type = InputSourceType::SILENCE;
 191         mapping.buses.push_back(new_bus);
 192         ui->table->setRowCount(mapping.buses.size());
 193
 194         unsigned row = mapping.buses.size() - 1;
 195         fill_row_from_bus(row, new_bus);
 196         ui->table->editItem(ui->table->item(row, 0));  // Start editing the name.
 197         update_button_state();
 198 }
 199
 200 void InputMappingDialog::remove_clicked()
 201 {
 202         assert(ui->table->rowCount() != 0);
 203
 204         set<int, greater<int>> rows_to_delete;  // Need to remove in reverse order.
 205         for (const QTableWidgetSelectionRange &range : ui->table->selectedRanges()) {
 206                 for (int row = range.topRow(); row <= range.bottomRow(); ++row) {
 207                         rows_to_delete.insert(row);
 208                 }
 209         }
 210         if (rows_to_delete.empty()) {
 211                 rows_to_delete.insert(ui->table->rowCount() - 1);
 212         }
 213
 214         for (int row : rows_to_delete) {
 215                 ui->table->removeRow(row);
 216                 mapping.buses.erase(mapping.buses.begin() + row);
 217         }
 218         update_button_state();
 219 }
 220
 221 void InputMappingDialog::updown_clicked(int direction)
 222 {
 223         assert(ui->table->selectedRanges().size() == 1);
 224         const QTableWidgetSelectionRange &range = ui->table->selectedRanges()[0];
 225         int a_row = range.bottomRow();
 226         int b_row = range.bottomRow() + direction;
 227
 228         swap(mapping.buses[a_row], mapping.buses[b_row]);
 229         fill_row_from_bus(a_row, mapping.buses[a_row]);
 230         fill_row_from_bus(b_row, mapping.buses[b_row]);
 231
 232         QTableWidgetSelectionRange a_sel(a_row, 0, a_row, ui->table->columnCount() - 1);
 233         QTableWidgetSelectionRange b_sel(b_row, 0, b_row, ui->table->columnCount() - 1);
 234         ui->table->setRangeSelected(a_sel, false);
 235         ui->table->setRangeSelected(b_sel, true);
 236 }
 237
 238 void InputMappingDialog::save_clicked()
 239 {
 240         QString filename = QFileDialog::getSaveFileName(this,
 241                 "Save input mapping", QString(), tr("Mapping files (*.mapping)"));
 242         if (!filename.endsWith(".mapping")) {
 243                 filename += ".mapping";
 244         }
 245         if (!save_input_mapping_to_file(devices, mapping, filename.toStdString())) {
 246                 QMessageBox box;
 247                 box.setText("Could not save mapping to '" + filename + "'. Check that you have the right permissions and try again.");
 248                 box.exec();
 249         }
 250 }
 251
 252 void InputMappingDialog::load_clicked()
 253 {
 254         QString filename = QFileDialog::getOpenFileName(this,
 255                 "Load input mapping", QString(), tr("Mapping files (*.mapping)"));
 256         InputMapping new_mapping;
 257         if (!load_input_mapping_from_file(devices, filename.toStdString(), &new_mapping)) {
 258                 QMessageBox box;
 259                 box.setText("Could not load mapping from '" + filename + "'. Check that the file exists, has the right permissions and is valid.");
 260                 box.exec();
 261                 return;
 262         }
 263
 264         mapping = new_mapping;
 265         devices = global_audio_mixer->get_devices();  // New dead cards may have been made.
 266         fill_ui_from_mapping(mapping);
 267 }
 268
 269 void InputMappingDialog::update_button_state()
 270 {
 271         ui->add_button->setDisabled(mapping.buses.size() >= MAX_BUSES);
 272         ui->remove_button->setDisabled(mapping.buses.size() == 0);
 273         ui->up_button->setDisabled(
 274                 ui->table->selectedRanges().empty() ||
 275                 ui->table->selectedRanges()[0].bottomRow() == 0);
 276         ui->down_button->setDisabled(
 277                 ui->table->selectedRanges().empty() ||
 278                 ui->table->selectedRanges()[0].bottomRow() == ui->table->rowCount() - 1);
 279 }