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