1 #include "mainwindow.h"
10 #include <QKeySequence>
13 #include <QPushButton>
14 #include <QResizeEvent>
19 #include "aboutdialog.h"
23 #include "post_to_main_thread.h"
24 #include "ui_display.h"
25 #include "ui_mainwindow.h"
31 using namespace std::placeholders;
33 Q_DECLARE_METATYPE(std::vector<std::string>);
35 MainWindow *global_mainwindow = nullptr;
39 void schedule_cut_signal(int ignored)
41 global_mixer->schedule_cut();
44 void quit_signal(int ignored)
46 global_mainwindow->close();
51 MainWindow::MainWindow()
52 : ui(new Ui::MainWindow)
54 global_mainwindow = this;
57 ui->me_live->set_output(Mixer::OUTPUT_LIVE);
58 ui->me_preview->set_output(Mixer::OUTPUT_PREVIEW);
61 connect(ui->cut_action, &QAction::triggered, this, &MainWindow::cut_triggered);
62 connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
63 connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered),
65 // Hook up the transition buttons. (Keyboard shortcuts are set in set_transition_names().)
66 // TODO: Make them dynamic.
67 connect(ui->transition_btn1, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 0));
68 connect(ui->transition_btn2, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 1));
69 connect(ui->transition_btn3, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 2));
72 transition_btn1 = ui->transition_btn1;
73 transition_btn2 = ui->transition_btn2;
74 transition_btn3 = ui->transition_btn3;
75 qRegisterMetaType<vector<string>>("std::vector<std::string>");
76 connect(ui->me_preview, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
77 qRegisterMetaType<Mixer::Output>("Mixer::Output");
80 void MainWindow::resizeEvent(QResizeEvent* event)
82 QMainWindow::resizeEvent(event);
84 // Ask for a relayout, but only after the event loop is done doing relayout
85 // on everything else.
86 QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
89 void MainWindow::mixer_created(Mixer *mixer)
92 unsigned num_previews = mixer->get_num_channels();
94 for (unsigned i = 0; i < num_previews; ++i) {
95 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
97 QWidget *preview = new QWidget(this);
98 Ui::Display *ui_display = new Ui::Display;
99 ui_display->setupUi(preview);
100 ui_display->label->setText(mixer->get_channel_name(output).c_str());
101 ui_display->display->set_output(output);
102 ui->preview_displays->insertWidget(previews.size(), preview, 1);
103 previews.push_back(ui_display);
105 // Hook up the click.
106 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
108 // Let the theme update the text whenever the resolution or color changed.
109 connect(ui_display->display, &GLWidget::resolution_updated, this, &MainWindow::update_channel_name);
110 connect(ui_display->display, &GLWidget::color_updated, this, &MainWindow::update_channel_color);
112 // Hook up the keyboard key.
113 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
114 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
116 // Hook up the white balance button (irrelevant if invisible).
117 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
118 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
122 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_limiter_threshold_dbfs());
123 ui->limiter_threshold_db_display->setText(buf);
124 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_compressor_threshold_dbfs());
125 ui->compressor_threshold_db_display->setText(buf);
127 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
128 cutoff_knob_changed(ui->locut_cutoff_knob->value());
129 connect(ui->locut_enabled, &QCheckBox::stateChanged, [this](int state){
130 global_mixer->set_locut_enabled(state == Qt::Checked);
133 // Not QDial::valueChanged, as we call setValue() all the time.
134 connect(ui->gainstaging_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::gain_staging_knob_changed);
135 connect(ui->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
136 global_mixer->set_gain_staging_auto(state == Qt::Checked);
138 connect(ui->makeup_gain_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::final_makeup_gain_knob_changed);
139 connect(ui->makeup_gain_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
140 global_mixer->set_final_makeup_gain_auto(state == Qt::Checked);
143 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
144 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
145 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
146 global_mixer->set_limiter_enabled(state == Qt::Checked);
148 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
149 global_mixer->set_compressor_enabled(state == Qt::Checked);
151 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
152 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6, _7, _8));
154 struct sigaction act;
155 act.sa_handler = schedule_cut_signal;
156 act.sa_flags = SA_RESTART;
157 sigaction(SIGHUP, &act, nullptr);
159 // Mostly for debugging. Don't override SIGINT, that's so evil if
160 // shutdown isn't instant.
161 act.sa_handler = quit_signal;
162 act.sa_flags = SA_RESTART;
163 sigaction(SIGUSR1, &act, nullptr);
166 void MainWindow::mixer_shutting_down()
168 ui->me_live->clean_context();
169 ui->me_preview->clean_context();
170 for (Ui::Display *display : previews) {
171 display->display->clean_context();
175 void MainWindow::cut_triggered()
177 global_mixer->schedule_cut();
180 void MainWindow::exit_triggered()
185 void MainWindow::about_triggered()
187 AboutDialog().exec();
190 void MainWindow::gain_staging_knob_changed(int value)
192 ui->gainstaging_auto_checkbox->setCheckState(Qt::Unchecked);
194 float gain_db = value * 0.1f;
195 global_mixer->set_gain_staging_db(gain_db);
197 // The label will be updated by the audio level callback.
200 void MainWindow::final_makeup_gain_knob_changed(int value)
202 ui->makeup_gain_auto_checkbox->setCheckState(Qt::Unchecked);
204 float gain_db = value * 0.1f;
205 global_mixer->set_final_makeup_gain_db(gain_db);
207 // The label will be updated by the audio level callback.
210 void MainWindow::cutoff_knob_changed(int value)
212 float octaves = value * 0.1f;
213 float cutoff_hz = 20.0 * pow(2.0, octaves);
214 global_mixer->set_locut_cutoff(cutoff_hz);
217 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
218 ui->locut_cutoff_display->setText(buf);
221 void MainWindow::limiter_threshold_knob_changed(int value)
223 float threshold_dbfs = value * 0.1f;
224 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
227 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
228 ui->limiter_threshold_db_display->setText(buf);
231 void MainWindow::compressor_threshold_knob_changed(int value)
233 float threshold_dbfs = value * 0.1f;
234 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
237 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
238 ui->compressor_threshold_db_display->setText(buf);
241 void MainWindow::reset_meters_button_clicked()
243 global_mixer->reset_meters();
244 ui->peak_display->setText("-inf");
245 ui->peak_display->setStyleSheet("");
248 void MainWindow::audio_level_callback(float level_lufs, float peak_db, float global_level_lufs,
249 float range_low_lufs, float range_high_lufs,
250 float gain_staging_db, float final_makeup_gain_db,
254 gettimeofday(&now, nullptr);
256 // The meters are somewhat inefficient to update. Only update them
257 // every 100 ms or so (we get updates every 5–20 ms).
258 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
259 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
260 if (last_update_age < 0.100) {
263 last_audio_level_callback = now;
265 post_to_main_thread([=]() {
266 ui->vu_meter->set_level(level_lufs);
267 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
268 ui->correlation_meter->set_correlation(correlation);
271 snprintf(buf, sizeof(buf), "%.1f", peak_db);
272 ui->peak_display->setText(buf);
273 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
274 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
276 ui->peak_display->setStyleSheet("");
279 ui->gainstaging_knob->setValue(lrintf(gain_staging_db * 10.0f));
280 snprintf(buf, sizeof(buf), "%+.1f dB", gain_staging_db);
281 ui->gainstaging_db_display->setText(buf);
283 ui->makeup_gain_knob->setValue(lrintf(final_makeup_gain_db * 10.0f));
284 snprintf(buf, sizeof(buf), "%+.1f dB", final_makeup_gain_db);
285 ui->makeup_gain_db_display->setText(buf);
289 void MainWindow::relayout()
291 int height = ui->vertical_layout->geometry().height();
293 double remaining_height = height;
295 // Allocate the height; the most important part is to keep the main displays
296 // at 16:9 if at all possible.
297 double me_width = ui->me_preview->width();
298 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
300 // TODO: Scale the widths when we need to do this.
301 if (me_height / double(height) > 0.8) {
302 me_height = height * 0.8;
304 remaining_height -= me_height + ui->vertical_layout->spacing();
306 double audiostrip_height = ui->audiostrip->geometry().height();
307 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
309 // The previews will be constrained by the remaining height, and the width.
310 double preview_label_height = previews[0]->title_bar->geometry().height() +
311 previews[0]->main_vertical_layout->spacing();
312 int preview_total_width = ui->preview_displays->geometry().width() - (previews.size() - 1) * ui->preview_displays->spacing();
313 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
314 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
316 ui->vertical_layout->setStretch(0, lrintf(me_height));
317 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
318 ui->vertical_layout->setStretch(2, max<int>(1, remaining_height)); // Spacer.
319 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
321 // Set the widths for the previews.
322 double preview_width = preview_height * 16.0 / 9.0;
323 for (unsigned i = 0; i < previews.size(); ++i) {
324 ui->preview_displays->setStretch(i, lrintf(preview_width));
327 // The preview horizontal spacer.
328 double remaining_preview_width = preview_total_width - previews.size() * preview_width;
329 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
332 void MainWindow::set_transition_names(vector<string> transition_names)
334 if (transition_names.size() < 1 || transition_names[0].empty()) {
335 transition_btn1->setText(QString(""));
337 transition_btn1->setText(QString::fromStdString(transition_names[0] + " (J)"));
338 ui->transition_btn1->setShortcut(QKeySequence("J"));
340 if (transition_names.size() < 2 || transition_names[1].empty()) {
341 transition_btn2->setText(QString(""));
343 transition_btn2->setText(QString::fromStdString(transition_names[1] + " (K)"));
344 ui->transition_btn2->setShortcut(QKeySequence("K"));
346 if (transition_names.size() < 3 || transition_names[2].empty()) {
347 transition_btn3->setText(QString(""));
349 transition_btn3->setText(QString::fromStdString(transition_names[2] + " (L)"));
350 ui->transition_btn3->setShortcut(QKeySequence("L"));
354 void MainWindow::update_channel_name(Mixer::Output output)
356 if (output >= Mixer::OUTPUT_INPUT0) {
357 unsigned channel = output - Mixer::OUTPUT_INPUT0;
358 previews[channel]->label->setText(global_mixer->get_channel_name(output).c_str());
362 void MainWindow::update_channel_color(Mixer::Output output)
364 if (output >= Mixer::OUTPUT_INPUT0) {
365 unsigned channel = output - Mixer::OUTPUT_INPUT0;
366 string color = global_mixer->get_channel_color(output);
367 previews[channel]->frame->setStyleSheet(QString::fromStdString("background-color:" + color));
371 void MainWindow::transition_clicked(int transition_number)
373 global_mixer->transition_clicked(transition_number);
376 void MainWindow::channel_clicked(int channel_number)
378 if (current_wb_pick_display == channel_number) {
379 // The picking was already done from eventFilter(), since we don't get
380 // the mouse pointer here.
382 global_mixer->channel_clicked(channel_number);
386 void MainWindow::wb_button_clicked(int channel_number)
388 current_wb_pick_display = channel_number;
389 QApplication::setOverrideCursor(Qt::CrossCursor);
392 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
394 if (current_wb_pick_display != -1 &&
395 event->type() == QEvent::MouseButtonRelease &&
396 watched->isWidgetType()) {
397 QApplication::restoreOverrideCursor();
398 if (watched == previews[current_wb_pick_display]->display) {
399 const QMouseEvent *mouse_event = (QMouseEvent *)event;
400 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
402 // The user clicked on something else, give up.
403 // (The click goes through, which might not be ideal, but, yes.)
404 current_wb_pick_display = -1;
412 double srgb_to_linear(double x)
417 return pow((x + 0.055) / 1.055, 2.4);
423 void MainWindow::set_white_balance(int channel_number, int x, int y)
425 // Set the white balance to neutral for the grab. It's probably going to
426 // flicker a bit, but hopefully this display is not live anyway.
427 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
428 previews[channel_number]->display->updateGL();
429 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
431 double r = srgb_to_linear(qRed(reference_color) / 255.0);
432 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
433 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
434 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
435 previews[channel_number]->display->updateGL();