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

   1 #include "input_mapping_dialog.h"
   2
   3 #include <assert.h>
   4 #include <stdbool.h>
   5 #include <stdint.h>
   6 #include <stdio.h>
   7 #include <QAbstractItemView>
   8 #include <QComboBox>
   9 #include <QDialogButtonBox>
  10 #include <QFileDialog>
  11 #include <QHeaderView>
  12 #include <QList>
  13 #include <QMessageBox>
  14 #include <QPushButton>
  15 #include <QTableWidget>
  16 #include <QVariant>
  17 #include <functional>
  18 #include <memory>
  19 #include <set>
  20 #include <string>
  21 #include <utility>
  22
  23 #include "alsa_pool.h"
  24 #include "defs.h"
  25 #include "shared/post_to_main_thread.h"
  26 #include "ui_input_mapping.h"
  27
  28 using namespace std;
  29 using namespace std::placeholders;
  30
  31 namespace {
  32
  33 bool uses_device(const InputMapping &mapping, DeviceSpec device)
  34 {
  35         for (const InputMapping::Bus &bus : mapping.buses) {
  36                 if (bus.device == device) {
  37                         return true;
  38                 }
  39         }
  40         return false;
  41 }
  42
  43 }  // namespace
  44
  45 InputMappingDialog::InputMappingDialog()
  46         : ui(new Ui::InputMappingDialog),
  47           mapping(global_audio_mixer->get_input_mapping()),
  48           old_mapping(mapping),
  49           devices(global_audio_mixer->get_devices())
  50 {
  51         for (unsigned bus_index = 0; bus_index < mapping.buses.size(); ++bus_index) {
  52                 bus_settings.push_back(global_audio_mixer->get_bus_settings(bus_index));
  53         }
  54
  55         ui->setupUi(this);
  56         ui->table->setSelectionBehavior(QAbstractItemView::SelectRows);
  57         ui->table->setSelectionMode(QAbstractItemView::SingleSelection);  // Makes implementing moving easier for now.
  58
  59         fill_ui_from_mapping(mapping);
  60         connect(ui->table, &QTableWidget::cellChanged, this, &InputMappingDialog::cell_changed);
  61         connect(ui->ok_cancel_buttons, &QDialogButtonBox::accepted, this, &InputMappingDialog::ok_clicked);
  62         connect(ui->ok_cancel_buttons, &QDialogButtonBox::rejected, this, &InputMappingDialog::cancel_clicked);
  63         connect(ui->add_button, &QPushButton::clicked, this, &InputMappingDialog::add_clicked);
  64         connect(ui->remove_button, &QPushButton::clicked, this, &InputMappingDialog::remove_clicked);
  65         connect(ui->up_button, &QPushButton::clicked, bind(&InputMappingDialog::updown_clicked, this, -1));
  66         connect(ui->down_button, &QPushButton::clicked, bind(&InputMappingDialog::updown_clicked, this, 1));
  67         connect(ui->save_button, &QPushButton::clicked, this, &InputMappingDialog::save_clicked);
  68         connect(ui->load_button, &QPushButton::clicked, this, &InputMappingDialog::load_clicked);
  69
  70         update_button_state();
  71         connect(ui->table, &QTableWidget::itemSelectionChanged, this, &InputMappingDialog::update_button_state);
  72
  73         saved_callback = global_audio_mixer->get_state_changed_callback();
  74         global_audio_mixer->set_state_changed_callback([this]{
  75                 post_to_main_thread([this]{
  76                         devices = global_audio_mixer->get_devices();
  77                         for (unsigned row = 0; row < mapping.buses.size(); ++row) {
  78                                 fill_row_from_bus(row, mapping.buses[row]);
  79                         }
  80                 });
  81         });
  82 }
  83
  84 InputMappingDialog::~InputMappingDialog()
  85 {
  86         global_audio_mixer->set_state_changed_callback(saved_callback);
  87 }
  88
  89 void InputMappingDialog::fill_ui_from_mapping(const InputMapping &mapping)
  90 {
  91         ui->table->verticalHeader()->hide();
  92         ui->table->horizontalHeader()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
  93         ui->table->horizontalHeader()->setSectionResizeMode(2, QHeaderView::ResizeToContents);
  94         ui->table->horizontalHeader()->setSectionResizeMode(3, QHeaderView::ResizeToContents);
  95         ui->table->horizontalHeader()->setSectionsClickable(false);
  96
  97         ui->table->setRowCount(mapping.buses.size());
  98         for (unsigned row = 0; row < mapping.buses.size(); ++row) {
  99                 fill_row_from_bus(row, mapping.buses[row]);
 100         }
 101 }
 102
 103 void InputMappingDialog::fill_row_from_bus(unsigned row, const InputMapping::Bus &bus)
 104 {
 105         QString name(QString::fromStdString(bus.name));
 106         ui->table->setItem(row, 0, new QTableWidgetItem(name));
 107
 108         // Card choices. If there's already a combobox here, we try to modify
 109         // the elements in-place, so that the UI doesn't go away under the user's feet
 110         // if they are in the process of choosing an item.
 111         QComboBox *card_combo = static_cast<QComboBox *>(ui->table->cellWidget(row, 1));
 112         if (card_combo == nullptr) {
 113                 card_combo = new QComboBox;
 114         }
 115         unsigned current_index = 0;
 116         if (card_combo->count() == 0) {
 117                 card_combo->addItem(QString("(none)   "));
 118         }
 119         for (const auto &spec_and_info : devices) {
 120                 QString label(QString::fromStdString(spec_and_info.second.display_name));
 121                 if (spec_and_info.first.type == InputSourceType::ALSA_INPUT) {
 122                         ALSAPool::Device::State state = global_audio_mixer->get_alsa_card_state(spec_and_info.first.index);
 123                         if (state == ALSAPool::Device::State::EMPTY) {
 124                                 continue;
 125                         } else if (state == ALSAPool::Device::State::STARTING) {
 126                                 label += " (busy)";
 127                         } else if (state == ALSAPool::Device::State::DEAD) {
 128                                 label += " (dead)";
 129                         }
 130                 } else if (!global_audio_mixer->get_active(spec_and_info.first)) {
 131                         // Should nominally be skipped, but if we used it before it went away,
 132                         // we'll need to allow the user to still see it.
 133                         if (uses_device(mapping, spec_and_info.first) ||
 134                             uses_device(old_mapping, spec_and_info.first)) {
 135                                 label += " (dead)";
 136                         } else {
 137                                 continue;
 138                         }
 139                 }
 140                 ++current_index;
 141                 if (unsigned(card_combo->count()) > current_index) {
 142                         card_combo->setItemText(current_index, label + "   ");
 143                         card_combo->setItemData(current_index, qulonglong(DeviceSpec_to_key(spec_and_info.first)));
 144                 } else {
 145                         card_combo->addItem(
 146                                 label + "   ",
 147                                 qulonglong(DeviceSpec_to_key(spec_and_info.first)));
 148                 }
 149                 if (bus.device == spec_and_info.first) {
 150                         card_combo->setCurrentIndex(current_index);
 151                 }
 152         }
 153         // Remove any excess items from earlier. (This is only for paranoia;
 154         // they should be held, so it shouldn't matter.)
 155         while (unsigned(card_combo->count()) > current_index + 1) {
 156                 card_combo->removeItem(current_index + 1);
 157         }
 158         connect(card_combo, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
 159                 bind(&InputMappingDialog::card_selected, this, card_combo, row, _1));
 160         ui->table->setCellWidget(row, 1, card_combo);
 161
 162         setup_channel_choices_from_bus(row, bus);
 163 }
 164
 165 void InputMappingDialog::setup_channel_choices_from_bus(unsigned row, const InputMapping::Bus &bus)
 166 {
 167         // Left and right channel.
 168         // TODO: If there's already a widget here, modify it instead of creating a new one,
 169         // as we do with card choices.
 170         for (unsigned channel = 0; channel < 2; ++channel) {
 171                 QComboBox *channel_combo = new QComboBox;
 172                 channel_combo->addItem(QString("(none)"));
 173                 if (bus.device.type == InputSourceType::CAPTURE_CARD ||
 174                     bus.device.type == InputSourceType::ALSA_INPUT) {
 175                         auto device_it = devices.find(bus.device);
 176                         assert(device_it != devices.end());
 177                         unsigned num_device_channels = device_it->second.num_channels;
 178                         for (unsigned source = 0; source < num_device_channels; ++source) {
 179                                 char buf[256];
 180                                 snprintf(buf, sizeof(buf), "Channel %u   ", source + 1);
 181                                 channel_combo->addItem(QString(buf));
 182                         }
 183                         channel_combo->setCurrentIndex(bus.source_channel[channel] + 1);
 184                 } else {
 185                         assert(bus.device.type == InputSourceType::SILENCE);
 186                         channel_combo->setCurrentIndex(0);
 187                 }
 188                 connect(channel_combo, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
 189                         bind(&InputMappingDialog::channel_selected, this, row, channel, _1));
 190                 ui->table->setCellWidget(row, 2 + channel, channel_combo);
 191         }
 192 }
 193
 194 void InputMappingDialog::ok_clicked()
 195 {
 196         global_audio_mixer->set_state_changed_callback(saved_callback);
 197         global_audio_mixer->set_input_mapping(mapping);
 198         for (unsigned bus_index = 0; bus_index < mapping.buses.size(); ++bus_index) {
 199                 global_audio_mixer->set_bus_settings(bus_index, bus_settings[bus_index]);
 200                 global_audio_mixer->reset_peak(bus_index);
 201         }
 202         accept();
 203 }
 204
 205 void InputMappingDialog::cancel_clicked()
 206 {
 207         global_audio_mixer->set_state_changed_callback(saved_callback);
 208         global_audio_mixer->set_input_mapping(old_mapping);
 209         reject();
 210 }
 211
 212 void InputMappingDialog::cell_changed(int row, int column)
 213 {
 214         if (column != 0) {
 215                 // Spurious; only really the name column should fire these.
 216                 return;
 217         }
 218         mapping.buses[row].name = ui->table->item(row, column)->text().toStdString();
 219 }
 220
 221 void InputMappingDialog::card_selected(QComboBox *card_combo, unsigned row, int index)
 222 {
 223         uint64_t key = card_combo->itemData(index).toULongLong();
 224         mapping.buses[row].device = key_to_DeviceSpec(key);
 225         setup_channel_choices_from_bus(row, mapping.buses[row]);
 226 }
 227
 228 void InputMappingDialog::channel_selected(unsigned row, unsigned channel, int index)
 229 {
 230         mapping.buses[row].source_channel[channel] = index - 1;
 231 }
 232
 233 void InputMappingDialog::add_clicked()
 234 {
 235         QTableWidgetSelectionRange all(0, 0, ui->table->rowCount() - 1, ui->table->columnCount() - 1);
 236         ui->table->setRangeSelected(all, false);
 237
 238         InputMapping::Bus new_bus;
 239         new_bus.name = "New input";
 240         new_bus.device.type = InputSourceType::SILENCE;
 241         mapping.buses.push_back(new_bus);
 242         bus_settings.push_back(AudioMixer::get_default_bus_settings());
 243         ui->table->setRowCount(mapping.buses.size());
 244
 245         unsigned row = mapping.buses.size() - 1;
 246         fill_row_from_bus(row, new_bus);
 247         ui->table->editItem(ui->table->item(row, 0));  // Start editing the name.
 248         update_button_state();
 249 }
 250
 251 void InputMappingDialog::remove_clicked()
 252 {
 253         assert(ui->table->rowCount() != 0);
 254
 255         set<int, greater<int>> rows_to_delete;  // Need to remove in reverse order.
 256         for (const QTableWidgetSelectionRange &range : ui->table->selectedRanges()) {
 257                 for (int row = range.topRow(); row <= range.bottomRow(); ++row) {
 258                         rows_to_delete.insert(row);
 259                 }
 260         }
 261         if (rows_to_delete.empty()) {
 262                 rows_to_delete.insert(ui->table->rowCount() - 1);
 263         }
 264
 265         for (int row : rows_to_delete) {
 266                 ui->table->removeRow(row);
 267                 mapping.buses.erase(mapping.buses.begin() + row);
 268                 bus_settings.erase(bus_settings.begin() + row);
 269         }
 270         update_button_state();
 271 }
 272
 273 void InputMappingDialog::updown_clicked(int direction)
 274 {
 275         assert(ui->table->selectedRanges().size() == 1);
 276         const QTableWidgetSelectionRange &range = ui->table->selectedRanges()[0];
 277         int a_row = range.bottomRow();
 278         int b_row = range.bottomRow() + direction;
 279
 280         swap(mapping.buses[a_row], mapping.buses[b_row]);
 281         swap(bus_settings[a_row], bus_settings[b_row]);
 282         fill_row_from_bus(a_row, mapping.buses[a_row]);
 283         fill_row_from_bus(b_row, mapping.buses[b_row]);
 284
 285         QTableWidgetSelectionRange a_sel(a_row, 0, a_row, ui->table->columnCount() - 1);
 286         QTableWidgetSelectionRange b_sel(b_row, 0, b_row, ui->table->columnCount() - 1);
 287         ui->table->setRangeSelected(a_sel, false);
 288         ui->table->setRangeSelected(b_sel, true);
 289 }
 290
 291 void InputMappingDialog::save_clicked()
 292 {
 293 #if HAVE_CEF
 294         // The native file dialog uses GTK+, which interferes with CEF's use of the GLib main loop.
 295         QFileDialog::Option options(QFileDialog::DontUseNativeDialog);
 296 #else
 297         QFileDialog::Option options(QFileDialog::Option(0));
 298 #endif
 299         QString filename = QFileDialog::getSaveFileName(this,
 300                 "Save input mapping", QString(), tr("Mapping files (*.mapping)"), /*selectedFilter=*/nullptr, options);
 301         if (!filename.endsWith(".mapping")) {
 302                 filename += ".mapping";
 303         }
 304         if (!save_input_mapping_to_file(devices, mapping, filename.toStdString())) {
 305                 QMessageBox box;
 306                 box.setText("Could not save mapping to '" + filename + "'. Check that you have the right permissions and try again.");
 307                 box.exec();
 308         }
 309 }
 310
 311 void InputMappingDialog::load_clicked()
 312 {
 313 #if HAVE_CEF
 314         // The native file dialog uses GTK+, which interferes with CEF's use of the GLib main loop.
 315         QFileDialog::Option options(QFileDialog::DontUseNativeDialog);
 316 #else
 317         QFileDialog::Option options(QFileDialog::Option(0));
 318 #endif
 319         QString filename = QFileDialog::getOpenFileName(this,
 320                 "Load input mapping", QString(), tr("Mapping files (*.mapping)"), /*selectedFilter=*/nullptr, options);
 321         InputMapping new_mapping;
 322         if (!load_input_mapping_from_file(devices, filename.toStdString(), &new_mapping)) {
 323                 QMessageBox box;
 324                 box.setText("Could not load mapping from '" + filename + "'. Check that the file exists, has the right permissions and is valid.");
 325                 box.exec();
 326                 return;
 327         }
 328
 329         mapping = new_mapping;
 330         bus_settings.clear();
 331         for (unsigned bus_index = 0; bus_index < mapping.buses.size(); ++bus_index) {
 332                 bus_settings.push_back(global_audio_mixer->get_bus_settings(bus_index));
 333         }
 334         devices = global_audio_mixer->get_devices();  // New dead cards may have been made.
 335         fill_ui_from_mapping(mapping);
 336 }
 337
 338 void InputMappingDialog::update_button_state()
 339 {
 340         ui->add_button->setDisabled(mapping.buses.size() >= MAX_BUSES);
 341         ui->remove_button->setDisabled(mapping.buses.size() == 0);
 342         ui->up_button->setDisabled(
 343                 ui->table->selectedRanges().empty() ||
 344                 ui->table->selectedRanges()[0].bottomRow() == 0);
 345         ui->down_button->setDisabled(
 346                 ui->table->selectedRanges().empty() ||
 347                 ui->table->selectedRanges()[0].bottomRow() == ui->table->rowCount() - 1);
 348 }