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

   1 #include "mainwindow.h"
   2
   3 #include <math.h>
   4 #include <stdio.h>
   5 #include <signal.h>
   6 #include <algorithm>
   7 #include <chrono>
   8 #include <string>
   9 #include <vector>
  10 #include <QBoxLayout>
  11 #include <QInputDialog>
  12 #include <QKeySequence>
  13 #include <QLabel>
  14 #include <QMessageBox>
  15 #include <QMetaType>
  16 #include <QPushButton>
  17 #include <QResizeEvent>
  18 #include <QShortcut>
  19 #include <QSize>
  20 #include <QString>
  21
  22 #include "aboutdialog.h"
  23 #include "disk_space_estimator.h"
  24 #include "flags.h"
  25 #include "glwidget.h"
  26 #include "input_mapping_dialog.h"
  27 #include "lrameter.h"
  28 #include "mixer.h"
  29 #include "post_to_main_thread.h"
  30 #include "ui_audio_miniview.h"
  31 #include "ui_audio_expanded_view.h"
  32 #include "ui_display.h"
  33 #include "ui_mainwindow.h"
  34 #include "vumeter.h"
  35
  36 class QResizeEvent;
  37
  38 using namespace std;
  39 using namespace std::chrono;
  40 using namespace std::placeholders;
  41
  42 Q_DECLARE_METATYPE(std::string);
  43 Q_DECLARE_METATYPE(std::vector<std::string>);
  44
  45 MainWindow *global_mainwindow = nullptr;
  46
  47 namespace {
  48
  49 void schedule_cut_signal(int ignored)
  50 {
  51         global_mixer->schedule_cut();
  52 }
  53
  54 void quit_signal(int ignored)
  55 {
  56         global_mainwindow->close();
  57 }
  58
  59 void slave_knob(QDial *master, QDial *slave)
  60 {
  61         QWidget::connect(master, &QDial::valueChanged, [slave](int value){
  62                 slave->blockSignals(true);
  63                 slave->setValue(value);
  64                 slave->blockSignals(false);
  65         });
  66         QWidget::connect(slave, &QDial::valueChanged, [master](int value){
  67                 master->setValue(value);
  68         });
  69 }
  70
  71 void slave_checkbox(QCheckBox *master, QCheckBox *slave)
  72 {
  73         QWidget::connect(master, &QCheckBox::stateChanged, [slave](int state){
  74                 slave->blockSignals(true);
  75                 slave->setCheckState(Qt::CheckState(state));
  76                 slave->blockSignals(false);
  77         });
  78         QWidget::connect(slave, &QCheckBox::stateChanged, [master](int state){
  79                 master->setCheckState(Qt::CheckState(state));
  80         });
  81 }
  82
  83 void slave_fader(NonLinearFader *master, NonLinearFader *slave)
  84 {
  85         QWidget::connect(master, &NonLinearFader::dbValueChanged, [slave](double value) {
  86                 slave->blockSignals(true);
  87                 slave->setDbValue(value);
  88                 slave->blockSignals(false);
  89         });
  90         QWidget::connect(slave, &NonLinearFader::dbValueChanged, [master](double value){
  91                 master->setDbValue(value);
  92         });
  93 }
  94
  95 constexpr unsigned DB_NO_FLAGS = 0x0;
  96 constexpr unsigned DB_WITH_SIGN = 0x1;
  97 constexpr unsigned DB_BARE = 0x2;
  98
  99 string format_db(double db, unsigned flags)
 100 {
 101         string text;
 102         if (flags & DB_WITH_SIGN) {
 103                 if (isfinite(db)) {
 104                         char buf[256];
 105                         snprintf(buf, sizeof(buf), "%+.1f", db);
 106                         text = buf;
 107                 } else if (db < 0.0) {
 108                         text = "-∞";
 109                 } else {
 110                         // Should never happen, really.
 111                         text = "+∞";
 112                 }
 113         } else {
 114                 if (isfinite(db)) {
 115                         char buf[256];
 116                         snprintf(buf, sizeof(buf), "%.1f", db);
 117                         text = buf;
 118                 } else if (db < 0.0) {
 119                         text = "-∞";
 120                 } else {
 121                         // Should never happen, really.
 122                         text = "∞";
 123                 }
 124         }
 125         if (!(flags & DB_BARE)) {
 126                 text += " dB";
 127         }
 128         return text;
 129 }
 130
 131 void set_peak_label(QLabel *peak_label, float peak_db)
 132 {
 133         peak_label->setText(QString::fromStdString(format_db(peak_db, DB_BARE)));
 134
 135         // -0.1 dBFS is EBU peak limit. We use it consistently, even for the bus meters
 136         // (which don't calculate interpolate peak, and in general don't follow EBU recommendations).
 137         if (peak_db > -0.1f) {
 138                 peak_label->setStyleSheet("QLabel { background-color: red; color: white; }");
 139         } else {
 140                 peak_label->setStyleSheet("");
 141         }
 142 }
 143
 144 }  // namespace
 145
 146 MainWindow::MainWindow()
 147         : ui(new Ui::MainWindow)
 148 {
 149         global_mainwindow = this;
 150         ui->setupUi(this);
 151
 152         global_disk_space_estimator = new DiskSpaceEstimator(bind(&MainWindow::report_disk_space, this, _1, _2));
 153         disk_free_label = new QLabel(this);
 154         disk_free_label->setStyleSheet("QLabel {padding-right: 5px;}");
 155         ui->menuBar->setCornerWidget(disk_free_label);
 156
 157         QActionGroup *audio_mapping_group = new QActionGroup(this);
 158         ui->simple_audio_mode->setActionGroup(audio_mapping_group);
 159         ui->multichannel_audio_mode->setActionGroup(audio_mapping_group);
 160
 161         ui->me_live->set_output(Mixer::OUTPUT_LIVE);
 162         ui->me_preview->set_output(Mixer::OUTPUT_PREVIEW);
 163
 164         // The menus.
 165         connect(ui->cut_action, &QAction::triggered, this, &MainWindow::cut_triggered);
 166         connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
 167         connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered);
 168         connect(ui->simple_audio_mode, &QAction::triggered, this, &MainWindow::simple_audio_mode_triggered);
 169         connect(ui->multichannel_audio_mode, &QAction::triggered, this, &MainWindow::multichannel_audio_mode_triggered);
 170         connect(ui->input_mapping_action, &QAction::triggered, this, &MainWindow::input_mapping_triggered);
 171
 172         if (global_flags.x264_video_to_http) {
 173                 connect(ui->x264_bitrate_action, &QAction::triggered, this, &MainWindow::x264_bitrate_triggered);
 174         } else {
 175                 ui->x264_bitrate_action->setEnabled(false);
 176         }
 177
 178         // Hook up the transition buttons. (Keyboard shortcuts are set in set_transition_names().)
 179         // TODO: Make them dynamic.
 180         connect(ui->transition_btn1, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 0));
 181         connect(ui->transition_btn2, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 1));
 182         connect(ui->transition_btn3, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 2));
 183
 184         // Aiee...
 185         transition_btn1 = ui->transition_btn1;
 186         transition_btn2 = ui->transition_btn2;
 187         transition_btn3 = ui->transition_btn3;
 188         qRegisterMetaType<string>("std::string");
 189         qRegisterMetaType<vector<string>>("std::vector<std::string>");
 190         connect(ui->me_live, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
 191         qRegisterMetaType<Mixer::Output>("Mixer::Output");
 192
 193         // Hook up the prev/next buttons on the audio views.
 194         connect(ui->compact_prev_page, &QAbstractButton::clicked, bind(&QStackedWidget::setCurrentIndex, ui->audio_views, 1));
 195         connect(ui->compact_next_page, &QAbstractButton::clicked, bind(&QStackedWidget::setCurrentIndex, ui->audio_views, 1));
 196         connect(ui->full_prev_page, &QAbstractButton::clicked, bind(&QStackedWidget::setCurrentIndex, ui->audio_views, 0));
 197         connect(ui->full_next_page, &QAbstractButton::clicked, bind(&QStackedWidget::setCurrentIndex, ui->audio_views, 0));
 198
 199         // And bind the same to PgUp/PgDown.
 200         auto switch_page = [this]{
 201                 if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::MULTICHANNEL) {
 202                         ui->audio_views->setCurrentIndex(1 - ui->audio_views->currentIndex());
 203                 }
 204         };
 205         connect(new QShortcut(QKeySequence::MoveToNextPage, this), &QShortcut::activated, switch_page);
 206         connect(new QShortcut(QKeySequence::MoveToPreviousPage, this), &QShortcut::activated, switch_page);
 207
 208         last_audio_level_callback = steady_clock::now() - seconds(1);
 209 }
 210
 211 void MainWindow::resizeEvent(QResizeEvent* event)
 212 {
 213         QMainWindow::resizeEvent(event);
 214
 215         // Ask for a relayout, but only after the event loop is done doing relayout
 216         // on everything else.
 217         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 218 }
 219
 220 void MainWindow::mixer_created(Mixer *mixer)
 221 {
 222         // Make the previews.
 223         unsigned num_previews = mixer->get_num_channels();
 224
 225         for (unsigned i = 0; i < num_previews; ++i) {
 226                 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
 227
 228                 QWidget *preview = new QWidget(this);
 229                 Ui::Display *ui_display = new Ui::Display;
 230                 ui_display->setupUi(preview);
 231                 ui_display->label->setText(mixer->get_channel_name(output).c_str());
 232                 ui_display->display->set_output(output);
 233                 ui->preview_displays->insertWidget(previews.size(), preview, 1);
 234                 previews.push_back(ui_display);
 235
 236                 // Hook up the click.
 237                 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
 238
 239                 // Let the theme update the text whenever the resolution or color changed.
 240                 connect(ui_display->display, &GLWidget::name_updated, this, &MainWindow::update_channel_name);
 241                 connect(ui_display->display, &GLWidget::color_updated, this, &MainWindow::update_channel_color);
 242
 243                 // Hook up the keyboard key.
 244                 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
 245                 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
 246
 247                 // Hook up the white balance button (irrelevant if invisible).
 248                 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
 249                 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
 250         }
 251
 252         global_audio_mixer->set_state_changed_callback(bind(&MainWindow::audio_state_changed, this));
 253
 254         slave_knob(ui->locut_cutoff_knob, ui->locut_cutoff_knob_2);
 255         slave_knob(ui->limiter_threshold_knob, ui->limiter_threshold_knob_2);
 256         slave_knob(ui->makeup_gain_knob, ui->makeup_gain_knob_2);
 257         slave_checkbox(ui->makeup_gain_auto_checkbox, ui->makeup_gain_auto_checkbox_2);
 258         slave_checkbox(ui->limiter_enabled, ui->limiter_enabled_2);
 259
 260         reset_audio_mapping_ui();
 261
 262         // TODO: Fetch all of the values these for completeness,
 263         // not just the enable knobs implied by flags.
 264         ui->limiter_enabled->setChecked(global_audio_mixer->get_limiter_enabled());
 265         ui->makeup_gain_auto_checkbox->setChecked(global_audio_mixer->get_final_makeup_gain_auto());
 266
 267         // Controls used only for simple audio fetch their state from the first bus.
 268         constexpr unsigned simple_bus_index = 0;
 269         if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::SIMPLE) {
 270                 ui->locut_enabled->setChecked(global_audio_mixer->get_locut_enabled(simple_bus_index));
 271                 ui->gainstaging_knob->setValue(global_audio_mixer->get_gain_staging_db(simple_bus_index));
 272                 ui->gainstaging_auto_checkbox->setChecked(global_audio_mixer->get_gain_staging_auto(simple_bus_index));
 273                 ui->compressor_enabled->setChecked(global_audio_mixer->get_compressor_enabled(simple_bus_index));
 274                 ui->compressor_threshold_db_display->setText(
 275                         QString::fromStdString(format_db(mixer->get_audio_mixer()->get_compressor_threshold_dbfs(simple_bus_index), DB_WITH_SIGN)));
 276         }
 277         connect(ui->locut_enabled, &QCheckBox::stateChanged, [this](int state){
 278                 global_audio_mixer->set_locut_enabled(simple_bus_index, state == Qt::Checked);
 279         });
 280         connect(ui->gainstaging_knob, &QAbstractSlider::valueChanged,
 281                 bind(&MainWindow::gain_staging_knob_changed, this, simple_bus_index, _1));
 282         connect(ui->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this, simple_bus_index](int state){
 283                 global_audio_mixer->set_gain_staging_auto(simple_bus_index, state == Qt::Checked);
 284         });
 285         connect(ui->compressor_threshold_knob, &QDial::valueChanged,
 286                 bind(&MainWindow::compressor_threshold_knob_changed, this, simple_bus_index, _1));
 287         connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this, simple_bus_index](int state){
 288                 global_audio_mixer->set_compressor_enabled(simple_bus_index, state == Qt::Checked);
 289         });
 290
 291         // Global mastering controls.
 292         QString limiter_threshold_label(
 293                 QString::fromStdString(format_db(mixer->get_audio_mixer()->get_limiter_threshold_dbfs(), DB_WITH_SIGN)));
 294         ui->limiter_threshold_db_display->setText(limiter_threshold_label);
 295         ui->limiter_threshold_db_display_2->setText(limiter_threshold_label);
 296
 297         connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
 298         cutoff_knob_changed(ui->locut_cutoff_knob->value());
 299
 300         connect(ui->makeup_gain_knob, &QAbstractSlider::valueChanged, this, &MainWindow::final_makeup_gain_knob_changed);
 301         connect(ui->makeup_gain_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
 302                 global_audio_mixer->set_final_makeup_gain_auto(state == Qt::Checked);
 303         });
 304
 305         connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
 306         connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
 307                 global_audio_mixer->set_limiter_enabled(state == Qt::Checked);
 308         });
 309         connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
 310         mixer->get_audio_mixer()->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6, _7, _8));
 311
 312         struct sigaction act;
 313         memset(&act, 0, sizeof(act));
 314         act.sa_handler = schedule_cut_signal;
 315         act.sa_flags = SA_RESTART;
 316         sigaction(SIGHUP, &act, nullptr);
 317
 318         // Mostly for debugging. Don't override SIGINT, that's so evil if
 319         // shutdown isn't instant.
 320         memset(&act, 0, sizeof(act));
 321         act.sa_handler = quit_signal;
 322         act.sa_flags = SA_RESTART;
 323         sigaction(SIGUSR1, &act, nullptr);
 324 }
 325
 326 void MainWindow::reset_audio_mapping_ui()
 327 {
 328         bool simple = (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::SIMPLE);
 329
 330         ui->simple_audio_mode->setChecked(simple);
 331         ui->multichannel_audio_mode->setChecked(!simple);
 332         ui->input_mapping_action->setEnabled(!simple);
 333
 334         ui->locut_enabled->setVisible(simple);
 335         ui->gainstaging_label->setVisible(simple);
 336         ui->gainstaging_knob->setVisible(simple);
 337         ui->gainstaging_db_display->setVisible(simple);
 338         ui->gainstaging_auto_checkbox->setVisible(simple);
 339         ui->compressor_threshold_label->setVisible(simple);
 340         ui->compressor_threshold_knob->setVisible(simple);
 341         ui->compressor_threshold_db_display->setVisible(simple);
 342         ui->compressor_enabled->setVisible(simple);
 343
 344         setup_audio_miniview();
 345         setup_audio_expanded_view();
 346
 347         if (simple) {
 348                 ui->audio_views->setCurrentIndex(0);
 349         }
 350         ui->compact_header->setVisible(!simple);
 351 }
 352
 353 void MainWindow::setup_audio_miniview()
 354 {
 355         // Remove any existing channels.
 356         for (QLayoutItem *item; (item = ui->faders->takeAt(0)) != nullptr; ) {
 357                 delete item->widget();
 358                 delete item;
 359         }
 360         audio_miniviews.clear();
 361
 362         if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::SIMPLE) {
 363                 return;
 364         }
 365
 366         // Set up brand new ones from the input mapping.
 367         InputMapping mapping = global_audio_mixer->get_input_mapping();
 368         audio_miniviews.resize(mapping.buses.size());
 369         for (unsigned bus_index = 0; bus_index < mapping.buses.size(); ++bus_index) {
 370                 QWidget *channel = new QWidget(this);
 371                 Ui::AudioMiniView *ui_audio_miniview = new Ui::AudioMiniView;
 372                 ui_audio_miniview->setupUi(channel);
 373                 ui_audio_miniview->bus_desc_label->setFullText(
 374                         QString::fromStdString(mapping.buses[bus_index].name));
 375                 audio_miniviews[bus_index] = ui_audio_miniview;
 376
 377                 // Set up the peak meter.
 378                 VUMeter *peak_meter = ui_audio_miniview->peak_meter;
 379                 peak_meter->set_min_level(-30.0f);
 380                 peak_meter->set_max_level(0.0f);
 381                 peak_meter->set_ref_level(0.0f);
 382
 383                 ui_audio_miniview->fader->setDbValue(global_audio_mixer->get_fader_volume(bus_index));
 384
 385                 ui->faders->addWidget(channel);
 386
 387                 connect(ui_audio_miniview->fader, &NonLinearFader::dbValueChanged,
 388                         bind(&MainWindow::mini_fader_changed, this, bus_index, _1));
 389                 connect(ui_audio_miniview->peak_display_label, &ClickableLabel::clicked,
 390                         [bus_index]() {
 391                                 global_audio_mixer->reset_peak(bus_index);
 392                         });
 393         }
 394 }
 395
 396 void MainWindow::setup_audio_expanded_view()
 397 {
 398         // Remove any existing channels.
 399         for (QLayoutItem *item; (item = ui->buses->takeAt(0)) != nullptr; ) {
 400                 delete item->widget();
 401                 delete item;
 402         }
 403         audio_expanded_views.clear();
 404
 405         if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::SIMPLE) {
 406                 return;
 407         }
 408
 409         // Set up brand new ones from the input mapping.
 410         InputMapping mapping = global_audio_mixer->get_input_mapping();
 411         audio_expanded_views.resize(mapping.buses.size());
 412         for (unsigned bus_index = 0; bus_index < mapping.buses.size(); ++bus_index) {
 413                 QWidget *channel = new QWidget(this);
 414                 Ui::AudioExpandedView *ui_audio_expanded_view = new Ui::AudioExpandedView;
 415                 ui_audio_expanded_view->setupUi(channel);
 416                 ui_audio_expanded_view->bus_desc_label->setFullText(
 417                         QString::fromStdString(mapping.buses[bus_index].name));
 418                 audio_expanded_views[bus_index] = ui_audio_expanded_view;
 419                 update_eq_label(bus_index, EQ_BAND_TREBLE, global_audio_mixer->get_eq(bus_index, EQ_BAND_TREBLE));
 420                 update_eq_label(bus_index, EQ_BAND_MID, global_audio_mixer->get_eq(bus_index, EQ_BAND_MID));
 421                 update_eq_label(bus_index, EQ_BAND_BASS, global_audio_mixer->get_eq(bus_index, EQ_BAND_BASS));
 422                 ui_audio_expanded_view->fader->setDbValue(global_audio_mixer->get_fader_volume(bus_index));
 423                 ui->buses->addWidget(channel);
 424
 425                 ui_audio_expanded_view->locut_enabled->setChecked(global_audio_mixer->get_locut_enabled(bus_index));
 426                 connect(ui_audio_expanded_view->locut_enabled, &QCheckBox::stateChanged, [this, bus_index](int state){
 427                         global_audio_mixer->set_locut_enabled(bus_index, state == Qt::Checked);
 428                 });
 429
 430                 connect(ui_audio_expanded_view->treble_knob, &QDial::valueChanged,
 431                         bind(&MainWindow::eq_knob_changed, this, bus_index, EQ_BAND_TREBLE, _1));
 432                 connect(ui_audio_expanded_view->mid_knob, &QDial::valueChanged,
 433                         bind(&MainWindow::eq_knob_changed, this, bus_index, EQ_BAND_MID, _1));
 434                 connect(ui_audio_expanded_view->bass_knob, &QDial::valueChanged,
 435                         bind(&MainWindow::eq_knob_changed, this, bus_index, EQ_BAND_BASS, _1));
 436
 437                 ui_audio_expanded_view->gainstaging_knob->setValue(global_audio_mixer->get_gain_staging_db(bus_index));
 438                 ui_audio_expanded_view->gainstaging_auto_checkbox->setChecked(global_audio_mixer->get_gain_staging_auto(bus_index));
 439                 ui_audio_expanded_view->compressor_enabled->setChecked(global_audio_mixer->get_compressor_enabled(bus_index));
 440
 441                 connect(ui_audio_expanded_view->gainstaging_knob, &QAbstractSlider::valueChanged, bind(&MainWindow::gain_staging_knob_changed, this, bus_index, _1));
 442                 connect(ui_audio_expanded_view->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this, bus_index](int state){
 443                         global_audio_mixer->set_gain_staging_auto(bus_index, state == Qt::Checked);
 444                 });
 445
 446                 connect(ui_audio_expanded_view->compressor_threshold_knob, &QDial::valueChanged, bind(&MainWindow::compressor_threshold_knob_changed, this, bus_index, _1));
 447                 connect(ui_audio_expanded_view->compressor_enabled, &QCheckBox::stateChanged, [this, bus_index](int state){
 448                         global_audio_mixer->set_compressor_enabled(bus_index, state == Qt::Checked);
 449                 });
 450
 451                 slave_fader(audio_miniviews[bus_index]->fader, ui_audio_expanded_view->fader);
 452
 453                 // Set up the peak meter.
 454                 VUMeter *peak_meter = ui_audio_expanded_view->peak_meter;
 455                 peak_meter->set_min_level(-30.0f);
 456                 peak_meter->set_max_level(0.0f);
 457                 peak_meter->set_ref_level(0.0f);
 458
 459                 connect(ui_audio_expanded_view->peak_display_label, &ClickableLabel::clicked,
 460                         [bus_index]() {
 461                                 global_audio_mixer->reset_peak(bus_index);
 462                         });
 463
 464                 // Set up the compression attenuation meter.
 465                 VUMeter *reduction_meter = ui_audio_expanded_view->reduction_meter;
 466                 reduction_meter->set_min_level(0.0f);
 467                 reduction_meter->set_max_level(10.0f);
 468                 reduction_meter->set_ref_level(0.0f);
 469                 reduction_meter->set_flip(true);
 470         }
 471
 472         update_cutoff_labels(global_audio_mixer->get_locut_cutoff());
 473 }
 474
 475 void MainWindow::mixer_shutting_down()
 476 {
 477         ui->me_live->clean_context();
 478         ui->me_preview->clean_context();
 479         for (Ui::Display *display : previews) {
 480                 display->display->clean_context();
 481         }
 482 }
 483
 484 void MainWindow::cut_triggered()
 485 {
 486         global_mixer->schedule_cut();
 487 }
 488
 489 void MainWindow::x264_bitrate_triggered()
 490 {
 491         bool ok;
 492         int new_bitrate = QInputDialog::getInt(this, "Change x264 bitrate", "Choose new bitrate for x264 HTTP output (from 100–100,000 kbit/sec):", global_flags.x264_bitrate, /*min=*/100, /*max=*/100000, /*step=*/100, &ok);
 493         if (ok && new_bitrate >= 100 && new_bitrate <= 100000) {
 494                 global_flags.x264_bitrate = new_bitrate;
 495                 global_mixer->change_x264_bitrate(new_bitrate);
 496         }
 497 }
 498
 499 void MainWindow::exit_triggered()
 500 {
 501         close();
 502 }
 503
 504 void MainWindow::about_triggered()
 505 {
 506         AboutDialog().exec();
 507 }
 508
 509 void MainWindow::simple_audio_mode_triggered()
 510 {
 511         if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::SIMPLE) {
 512                 return;
 513         }
 514         unsigned card_index = global_audio_mixer->get_simple_input();
 515         if (card_index == numeric_limits<unsigned>::max()) {
 516                 QMessageBox::StandardButton reply =
 517                         QMessageBox::question(this,
 518                                 "Mapping too complex",
 519                                 "The current audio mapping is too complicated to be representable in simple mode, "
 520                                         "and will be discarded if you proceed. Really go to simple audio mode?",
 521                                 QMessageBox::Yes | QMessageBox::No);
 522                 if (reply == QMessageBox::No) {
 523                         ui->simple_audio_mode->setChecked(false);
 524                         ui->multichannel_audio_mode->setChecked(true);
 525                         return;
 526                 }
 527                 card_index = 0;
 528         }
 529         global_audio_mixer->set_simple_input(/*card_index=*/card_index);
 530         reset_audio_mapping_ui();
 531 }
 532
 533 void MainWindow::multichannel_audio_mode_triggered()
 534 {
 535         if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::MULTICHANNEL) {
 536                 return;
 537         }
 538
 539         // Take the generated input mapping from the simple input,
 540         // and set it as a normal multichannel mapping, which causes
 541         // the mode to go to multichannel.
 542         global_audio_mixer->set_input_mapping(global_audio_mixer->get_input_mapping());
 543         reset_audio_mapping_ui();
 544 }
 545
 546 void MainWindow::input_mapping_triggered()
 547 {
 548         if (InputMappingDialog().exec() == QDialog::Accepted) {
 549                 setup_audio_miniview();
 550                 setup_audio_expanded_view();
 551         }
 552 }
 553
 554 void MainWindow::gain_staging_knob_changed(unsigned bus_index, int value)
 555 {
 556         if (bus_index == 0) {
 557                 ui->gainstaging_auto_checkbox->setCheckState(Qt::Unchecked);
 558         }
 559         if (bus_index < audio_expanded_views.size()) {
 560                 audio_expanded_views[bus_index]->gainstaging_auto_checkbox->setCheckState(Qt::Unchecked);
 561         }
 562
 563         float gain_db = value * 0.1f;
 564         global_audio_mixer->set_gain_staging_db(bus_index, gain_db);
 565
 566         // The label will be updated by the audio level callback.
 567 }
 568
 569 void MainWindow::final_makeup_gain_knob_changed(int value)
 570 {
 571         ui->makeup_gain_auto_checkbox->setCheckState(Qt::Unchecked);
 572
 573         float gain_db = value * 0.1f;
 574         global_audio_mixer->set_final_makeup_gain_db(gain_db);
 575
 576         // The label will be updated by the audio level callback.
 577 }
 578
 579 void MainWindow::cutoff_knob_changed(int value)
 580 {
 581         float octaves = value * 0.1f;
 582         float cutoff_hz = 20.0 * pow(2.0, octaves);
 583         global_audio_mixer->set_locut_cutoff(cutoff_hz);
 584         update_cutoff_labels(cutoff_hz);
 585 }
 586
 587 void MainWindow::update_cutoff_labels(float cutoff_hz)
 588 {
 589         char buf[256];
 590         snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
 591         ui->locut_cutoff_display->setText(buf);
 592         ui->locut_cutoff_display_2->setText(buf);
 593
 594         for (unsigned bus_index = 0; bus_index < audio_expanded_views.size(); ++bus_index) {
 595                 audio_expanded_views[bus_index]->locut_enabled->setText(
 596                         QString("Lo-cut: ") + buf);
 597         }
 598 }
 599
 600 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
 601 {
 602         char time_str[256];
 603         if (estimated_seconds_left < 60.0) {
 604                 strcpy(time_str, "<font color=\"red\">Less than a minute</font>");
 605         } else if (estimated_seconds_left < 1800.0) {  // Less than half an hour: Xm Ys (red).
 606                 int s = lrintf(estimated_seconds_left);
 607                 int m = s / 60;
 608                 s %= 60;
 609                 snprintf(time_str, sizeof(time_str), "<font color=\"red\">%dm %ds</font>", m, s);
 610         } else if (estimated_seconds_left < 3600.0) {  // Less than an hour: Xm.
 611                 int m = lrintf(estimated_seconds_left / 60.0);
 612                 snprintf(time_str, sizeof(time_str), "%dm", m);
 613         } else if (estimated_seconds_left < 36000.0) {  // Less than ten hours: Xh Ym.
 614                 int m = lrintf(estimated_seconds_left / 60.0);
 615                 int h = m / 60;
 616                 m %= 60;
 617                 snprintf(time_str, sizeof(time_str), "%dh %dm", h, m);
 618         } else {  // More than ten hours: Xh.
 619                 int h = lrintf(estimated_seconds_left / 3600.0);
 620                 snprintf(time_str, sizeof(time_str), "%dh", h);
 621         }
 622         char buf[256];
 623         snprintf(buf, sizeof(buf), "Disk free: %'.0f MB (approx. %s)", free_bytes / 1048576.0, time_str);
 624
 625         std::string label = buf;
 626
 627         post_to_main_thread([this, label]{
 628                 disk_free_label->setText(QString::fromStdString(label));
 629                 ui->menuBar->setCornerWidget(disk_free_label);  // Need to set this again for the sizing to get right.
 630         });
 631 }
 632
 633 void MainWindow::eq_knob_changed(unsigned bus_index, EQBand band, int value)
 634 {
 635         float gain_db = value * 0.1f;
 636         global_audio_mixer->set_eq(bus_index, band, gain_db);
 637
 638         update_eq_label(bus_index, band, gain_db);
 639 }
 640
 641 void MainWindow::update_eq_label(unsigned bus_index, EQBand band, float gain_db)
 642 {
 643         Ui::AudioExpandedView *view = audio_expanded_views[bus_index];
 644         string db_string = format_db(gain_db, DB_WITH_SIGN);
 645         switch (band) {
 646         case EQ_BAND_TREBLE:
 647                 view->treble_label->setText(QString::fromStdString("Treble: " + db_string));
 648                 break;
 649         case EQ_BAND_MID:
 650                 view->mid_label->setText(QString::fromStdString("Mid: " + db_string));
 651                 break;
 652         case EQ_BAND_BASS:
 653                 view->bass_label->setText(QString::fromStdString("Bass: " + db_string));
 654                 break;
 655         default:
 656                 assert(false);
 657         }
 658 }
 659
 660 void MainWindow::limiter_threshold_knob_changed(int value)
 661 {
 662         float threshold_dbfs = value * 0.1f;
 663         global_audio_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
 664         ui->limiter_threshold_db_display->setText(
 665                 QString::fromStdString(format_db(threshold_dbfs, DB_WITH_SIGN)));
 666         ui->limiter_threshold_db_display_2->setText(
 667                 QString::fromStdString(format_db(threshold_dbfs, DB_WITH_SIGN)));
 668 }
 669
 670 void MainWindow::compressor_threshold_knob_changed(unsigned bus_index, int value)
 671 {
 672         float threshold_dbfs = value * 0.1f;
 673         global_audio_mixer->set_compressor_threshold_dbfs(bus_index, threshold_dbfs);
 674
 675         QString label(QString::fromStdString(format_db(threshold_dbfs, DB_WITH_SIGN)));
 676         if (bus_index == 0) {
 677                 ui->compressor_threshold_db_display->setText(label);
 678         }
 679         if (bus_index < audio_expanded_views.size()) {
 680                 audio_expanded_views[bus_index]->compressor_threshold_db_display->setText(label);
 681         }
 682 }
 683
 684 void MainWindow::mini_fader_changed(int bus, double volume_db)
 685 {
 686         QString label(QString::fromStdString(format_db(volume_db, DB_WITH_SIGN)));
 687         audio_miniviews[bus]->fader_label->setText(label);
 688         audio_expanded_views[bus]->fader_label->setText(label);
 689
 690         global_audio_mixer->set_fader_volume(bus, volume_db);
 691 }
 692
 693 void MainWindow::reset_meters_button_clicked()
 694 {
 695         global_audio_mixer->reset_meters();
 696         ui->peak_display->setText(QString::fromStdString(format_db(-HUGE_VAL, DB_WITH_SIGN | DB_BARE)));
 697         ui->peak_display->setStyleSheet("");
 698 }
 699
 700 void MainWindow::audio_level_callback(float level_lufs, float peak_db, vector<AudioMixer::BusLevel> bus_levels,
 701                                       float global_level_lufs,
 702                                       float range_low_lufs, float range_high_lufs,
 703                                       float final_makeup_gain_db,
 704                                       float correlation)
 705 {
 706         steady_clock::time_point now = steady_clock::now();
 707
 708         // The meters are somewhat inefficient to update. Only update them
 709         // every 100 ms or so (we get updates every 5–20 ms). Note that this
 710         // means that the digital peak meters are ever so slightly too low
 711         // (each update won't be a faithful representation of the highest peak
 712         // since the previous update, since there are frames we won't draw),
 713         // but the _peak_ of the peak meters will be correct (it's tracked in
 714         // AudioMixer, not here), and that's much more important.
 715         double last_update_age = duration<double>(now - last_audio_level_callback).count();
 716         if (last_update_age < 0.100) {
 717                 return;
 718         }
 719         last_audio_level_callback = now;
 720
 721         post_to_main_thread([=]() {
 722                 ui->vu_meter->set_level(level_lufs);
 723                 for (unsigned bus_index = 0; bus_index < bus_levels.size(); ++bus_index) {
 724                         if (bus_index < audio_miniviews.size()) {
 725                                 const AudioMixer::BusLevel &level = bus_levels[bus_index];
 726                                 Ui::AudioMiniView *miniview = audio_miniviews[bus_index];
 727                                 miniview->peak_meter->set_level(
 728                                         level.current_level_dbfs[0], level.current_level_dbfs[1]);
 729                                 miniview->peak_meter->set_peak(
 730                                         level.peak_level_dbfs[0], level.peak_level_dbfs[1]);
 731                                 set_peak_label(miniview->peak_display_label, level.historic_peak_dbfs);
 732
 733                                 Ui::AudioExpandedView *view = audio_expanded_views[bus_index];
 734                                 view->peak_meter->set_level(
 735                                         level.current_level_dbfs[0], level.current_level_dbfs[1]);
 736                                 view->peak_meter->set_peak(
 737                                         level.peak_level_dbfs[0], level.peak_level_dbfs[1]);
 738                                 view->reduction_meter->set_level(level.compressor_attenuation_db);
 739                                 view->gainstaging_knob->blockSignals(true);
 740                                 view->gainstaging_knob->setValue(lrintf(level.gain_staging_db * 10.0f));
 741                                 view->gainstaging_knob->blockSignals(false);
 742                                 view->gainstaging_db_display->setText(
 743                                         QString("Gain: ") +
 744                                         QString::fromStdString(format_db(level.gain_staging_db, DB_WITH_SIGN)));
 745                                 set_peak_label(view->peak_display_label, level.historic_peak_dbfs);
 746                         }
 747                 }
 748                 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
 749                 ui->correlation_meter->set_correlation(correlation);
 750
 751                 ui->peak_display->setText(QString::fromStdString(format_db(peak_db, DB_BARE)));
 752                 set_peak_label(ui->peak_display, peak_db);
 753
 754                 // NOTE: Will be invisible when using multitrack audio.
 755                 ui->gainstaging_knob->blockSignals(true);
 756                 ui->gainstaging_knob->setValue(lrintf(bus_levels[0].gain_staging_db * 10.0f));
 757                 ui->gainstaging_knob->blockSignals(false);
 758                 ui->gainstaging_db_display->setText(
 759                         QString::fromStdString(format_db(bus_levels[0].gain_staging_db, DB_WITH_SIGN)));
 760
 761                 ui->makeup_gain_knob->blockSignals(true);
 762                 ui->makeup_gain_knob->setValue(lrintf(final_makeup_gain_db * 10.0f));
 763                 ui->makeup_gain_knob->blockSignals(false);
 764                 ui->makeup_gain_db_display->setText(
 765                         QString::fromStdString(format_db(final_makeup_gain_db, DB_WITH_SIGN)));
 766                 ui->makeup_gain_db_display_2->setText(
 767                         QString::fromStdString(format_db(final_makeup_gain_db, DB_WITH_SIGN)));
 768         });
 769 }
 770
 771 void MainWindow::relayout()
 772 {
 773         int height = ui->vertical_layout->geometry().height();
 774
 775         double remaining_height = height;
 776
 777         // Allocate the height; the most important part is to keep the main displays
 778         // at 16:9 if at all possible.
 779         double me_width = ui->me_preview->width();
 780         double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
 781
 782         // TODO: Scale the widths when we need to do this.
 783         if (me_height / double(height) > 0.8) {
 784                 me_height = height * 0.8;
 785         }
 786         remaining_height -= me_height + ui->vertical_layout->spacing();
 787
 788         // Space between the M/E displays and the audio strip.
 789         remaining_height -= ui->vertical_layout->spacing();
 790
 791         // The label above the audio strip.
 792         double compact_label_height = ui->compact_label->minimumHeight() +
 793                 ui->compact_audio_layout->spacing();
 794         remaining_height -= compact_label_height;
 795
 796         // The previews will be constrained by the remaining height, and the width.
 797         double preview_label_height = previews[0]->title_bar->geometry().height() +
 798                 previews[0]->main_vertical_layout->spacing();
 799         int preview_total_width = ui->preview_displays->geometry().width() - (previews.size() - 1) * ui->preview_displays->spacing();
 800         double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
 801         remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
 802
 803         ui->vertical_layout->setStretch(0, lrintf(me_height));
 804         ui->vertical_layout->setStretch(1,
 805                 lrintf(compact_label_height) +
 806                 lrintf(remaining_height) +
 807                 lrintf(preview_height + preview_label_height));  // Audio strip and previews together.
 808
 809         ui->compact_audio_layout->setStretch(0, lrintf(compact_label_height));
 810         ui->compact_audio_layout->setStretch(1, lrintf(remaining_height));  // Audio strip.
 811         ui->compact_audio_layout->setStretch(2, lrintf(preview_height + preview_label_height));
 812
 813         // Set the widths for the previews.
 814         double preview_width = preview_height * 16.0 / 9.0;
 815         for (unsigned i = 0; i < previews.size(); ++i) {
 816                 ui->preview_displays->setStretch(i, lrintf(preview_width));
 817         }
 818
 819         // The preview horizontal spacer.
 820         double remaining_preview_width = preview_total_width - previews.size() * preview_width;
 821         ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
 822 }
 823
 824 void MainWindow::set_transition_names(vector<string> transition_names)
 825 {
 826         if (transition_names.size() < 1 || transition_names[0].empty()) {
 827                 transition_btn1->setText(QString(""));
 828         } else {
 829                 transition_btn1->setText(QString::fromStdString(transition_names[0] + " (J)"));
 830                 ui->transition_btn1->setShortcut(QKeySequence("J"));
 831         }
 832         if (transition_names.size() < 2 || transition_names[1].empty()) {
 833                 transition_btn2->setText(QString(""));
 834         } else {
 835                 transition_btn2->setText(QString::fromStdString(transition_names[1] + " (K)"));
 836                 ui->transition_btn2->setShortcut(QKeySequence("K"));
 837         }
 838         if (transition_names.size() < 3 || transition_names[2].empty()) {
 839                 transition_btn3->setText(QString(""));
 840         } else {
 841                 transition_btn3->setText(QString::fromStdString(transition_names[2] + " (L)"));
 842                 ui->transition_btn3->setShortcut(QKeySequence("L"));
 843         }
 844 }
 845
 846 void MainWindow::update_channel_name(Mixer::Output output, const string &name)
 847 {
 848         if (output >= Mixer::OUTPUT_INPUT0) {
 849                 unsigned channel = output - Mixer::OUTPUT_INPUT0;
 850                 previews[channel]->label->setText(name.c_str());
 851         }
 852 }
 853
 854 void MainWindow::update_channel_color(Mixer::Output output, const string &color)
 855 {
 856         if (output >= Mixer::OUTPUT_INPUT0) {
 857                 unsigned channel = output - Mixer::OUTPUT_INPUT0;
 858                 previews[channel]->frame->setStyleSheet(QString::fromStdString("background-color:" + color));
 859         }
 860 }
 861
 862 void MainWindow::transition_clicked(int transition_number)
 863 {
 864         global_mixer->transition_clicked(transition_number);
 865 }
 866
 867 void MainWindow::channel_clicked(int channel_number)
 868 {
 869         if (current_wb_pick_display == channel_number) {
 870                 // The picking was already done from eventFilter(), since we don't get
 871                 // the mouse pointer here.
 872         } else {
 873                 global_mixer->channel_clicked(channel_number);
 874         }
 875 }
 876
 877 void MainWindow::wb_button_clicked(int channel_number)
 878 {
 879         current_wb_pick_display = channel_number;
 880         QApplication::setOverrideCursor(Qt::CrossCursor);
 881 }
 882
 883 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 884 {
 885         if (current_wb_pick_display != -1 &&
 886             event->type() == QEvent::MouseButtonRelease &&
 887             watched->isWidgetType()) {
 888                 QApplication::restoreOverrideCursor();
 889                 if (watched == previews[current_wb_pick_display]->display) {
 890                         const QMouseEvent *mouse_event = (QMouseEvent *)event;
 891                         set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
 892                 } else {
 893                         // The user clicked on something else, give up.
 894                         // (The click goes through, which might not be ideal, but, yes.)
 895                         current_wb_pick_display = -1;
 896                 }
 897         }
 898         return false;
 899 }
 900
 901 namespace {
 902
 903 double srgb_to_linear(double x)
 904 {
 905         if (x < 0.04045) {
 906                 return x / 12.92;
 907         } else {
 908                 return pow((x + 0.055) / 1.055, 2.4);
 909         }
 910 }
 911
 912 }  // namespace
 913
 914 void MainWindow::set_white_balance(int channel_number, int x, int y)
 915 {
 916         // Set the white balance to neutral for the grab. It's probably going to
 917         // flicker a bit, but hopefully this display is not live anyway.
 918         global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
 919         previews[channel_number]->display->updateGL();
 920         QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
 921
 922         double r = srgb_to_linear(qRed(reference_color) / 255.0);
 923         double g = srgb_to_linear(qGreen(reference_color) / 255.0);
 924         double b = srgb_to_linear(qBlue(reference_color) / 255.0);
 925         global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
 926         previews[channel_number]->display->updateGL();
 927 }
 928
 929 void MainWindow::audio_state_changed()
 930 {
 931         post_to_main_thread([this]{
 932                 InputMapping mapping = global_audio_mixer->get_input_mapping();
 933                 for (unsigned bus_index = 0; bus_index < mapping.buses.size(); ++bus_index) {
 934                         const InputMapping::Bus &bus = mapping.buses[bus_index];
 935                         string suffix;
 936                         if (bus.device.type == InputSourceType::ALSA_INPUT) {
 937                                 ALSAPool::Device::State state = global_audio_mixer->get_alsa_card_state(bus.device.index);
 938                                 if (state == ALSAPool::Device::State::STARTING) {
 939                                         suffix = " (busy)";
 940                                 } else if (state == ALSAPool::Device::State::DEAD) {
 941                                         suffix = " (dead)";
 942                                 }
 943                         }
 944
 945                         audio_miniviews[bus_index]->bus_desc_label->setFullText(
 946                                 QString::fromStdString(bus.name + suffix));
 947                         audio_expanded_views[bus_index]->bus_desc_label->setFullText(
 948                                 QString::fromStdString(bus.name + suffix));
 949                 }
 950         });
 951 }