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>);
37 void schedule_cut_signal(int ignored)
39 global_mixer->schedule_cut();
44 MainWindow *global_mainwindow = nullptr;
46 MainWindow::MainWindow()
47 : ui(new Ui::MainWindow)
49 global_mainwindow = this;
52 ui->me_live->set_output(Mixer::OUTPUT_LIVE);
53 ui->me_preview->set_output(Mixer::OUTPUT_PREVIEW);
56 connect(ui->cut_action, &QAction::triggered, this, &MainWindow::cut_triggered);
57 connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
58 connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered),
60 // Hook up the transition buttons. (Keyboard shortcuts are set in set_transition_names().)
61 // TODO: Make them dynamic.
62 connect(ui->transition_btn1, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 0));
63 connect(ui->transition_btn2, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 1));
64 connect(ui->transition_btn3, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 2));
67 transition_btn1 = ui->transition_btn1;
68 transition_btn2 = ui->transition_btn2;
69 transition_btn3 = ui->transition_btn3;
70 qRegisterMetaType<vector<string>>("std::vector<std::string>");
71 connect(ui->me_preview, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
72 qRegisterMetaType<Mixer::Output>("Mixer::Output");
75 void MainWindow::resizeEvent(QResizeEvent* event)
77 QMainWindow::resizeEvent(event);
79 // Ask for a relayout, but only after the event loop is done doing relayout
80 // on everything else.
81 QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
84 void MainWindow::mixer_created(Mixer *mixer)
87 unsigned num_previews = mixer->get_num_channels();
89 for (unsigned i = 0; i < num_previews; ++i) {
90 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
92 QWidget *preview = new QWidget(this);
93 Ui::Display *ui_display = new Ui::Display;
94 ui_display->setupUi(preview);
95 ui_display->label->setText(mixer->get_channel_name(output).c_str());
96 ui_display->display->set_output(output);
97 ui->preview_displays->insertWidget(previews.size(), preview, 1);
98 previews.push_back(ui_display);
100 // Hook up the click.
101 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
103 // Let the theme update the text whenever the resolution or color changed.
104 connect(ui_display->display, &GLWidget::resolution_updated, this, &MainWindow::update_channel_name);
105 connect(ui_display->display, &GLWidget::color_updated, this, &MainWindow::update_channel_color);
107 // Hook up the keyboard key.
108 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
109 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
111 // Hook up the white balance button (irrelevant if invisible).
112 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
113 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
117 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_limiter_threshold_dbfs());
118 ui->limiter_threshold_db_display->setText(buf);
119 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_compressor_threshold_dbfs());
120 ui->compressor_threshold_db_display->setText(buf);
122 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
123 cutoff_knob_changed(ui->locut_cutoff_knob->value());
124 connect(ui->locut_enabled, &QCheckBox::stateChanged, [this](int state){
125 global_mixer->set_locut_enabled(state == Qt::Checked);
128 // Not QDial::valueChanged, as we call setValue() all the time.
129 connect(ui->gainstaging_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::gain_staging_knob_changed);
130 connect(ui->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
131 global_mixer->set_gain_staging_auto(state == Qt::Checked);
133 connect(ui->makeup_gain_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::final_makeup_gain_knob_changed);
134 connect(ui->makeup_gain_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
135 global_mixer->set_final_makeup_gain_auto(state == Qt::Checked);
138 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
139 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
140 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
141 global_mixer->set_limiter_enabled(state == Qt::Checked);
143 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
144 global_mixer->set_compressor_enabled(state == Qt::Checked);
146 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
147 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6, _7, _8));
149 struct sigaction act;
150 act.sa_handler = schedule_cut_signal;
151 act.sa_flags = SA_RESTART;
152 sigaction(SIGHUP, &act, nullptr);
155 void MainWindow::mixer_shutting_down()
157 ui->me_live->clean_context();
158 ui->me_preview->clean_context();
159 for (Ui::Display *display : previews) {
160 display->display->clean_context();
164 void MainWindow::cut_triggered()
166 global_mixer->schedule_cut();
169 void MainWindow::exit_triggered()
174 void MainWindow::about_triggered()
176 AboutDialog().exec();
179 void MainWindow::gain_staging_knob_changed(int value)
181 ui->gainstaging_auto_checkbox->setCheckState(Qt::Unchecked);
183 float gain_db = value * 0.1f;
184 global_mixer->set_gain_staging_db(gain_db);
186 // The label will be updated by the audio level callback.
189 void MainWindow::final_makeup_gain_knob_changed(int value)
191 ui->makeup_gain_auto_checkbox->setCheckState(Qt::Unchecked);
193 float gain_db = value * 0.1f;
194 global_mixer->set_final_makeup_gain_db(gain_db);
196 // The label will be updated by the audio level callback.
199 void MainWindow::cutoff_knob_changed(int value)
201 float octaves = value * 0.1f;
202 float cutoff_hz = 20.0 * pow(2.0, octaves);
203 global_mixer->set_locut_cutoff(cutoff_hz);
206 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
207 ui->locut_cutoff_display->setText(buf);
210 void MainWindow::limiter_threshold_knob_changed(int value)
212 float threshold_dbfs = value * 0.1f;
213 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
216 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
217 ui->limiter_threshold_db_display->setText(buf);
220 void MainWindow::compressor_threshold_knob_changed(int value)
222 float threshold_dbfs = value * 0.1f;
223 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
226 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
227 ui->compressor_threshold_db_display->setText(buf);
230 void MainWindow::reset_meters_button_clicked()
232 global_mixer->reset_meters();
233 ui->peak_display->setText("-inf");
234 ui->peak_display->setStyleSheet("");
237 void MainWindow::audio_level_callback(float level_lufs, float peak_db, float global_level_lufs,
238 float range_low_lufs, float range_high_lufs,
239 float gain_staging_db, float final_makeup_gain_db,
243 gettimeofday(&now, nullptr);
245 // The meters are somewhat inefficient to update. Only update them
246 // every 100 ms or so (we get updates every 5–20 ms).
247 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
248 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
249 if (last_update_age < 0.100) {
252 last_audio_level_callback = now;
254 post_to_main_thread([=]() {
255 ui->vu_meter->set_level(level_lufs);
256 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
257 ui->correlation_meter->set_correlation(correlation);
260 snprintf(buf, sizeof(buf), "%.1f", peak_db);
261 ui->peak_display->setText(buf);
262 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
263 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
265 ui->peak_display->setStyleSheet("");
268 ui->gainstaging_knob->setValue(lrintf(gain_staging_db * 10.0f));
269 snprintf(buf, sizeof(buf), "%+.1f dB", gain_staging_db);
270 ui->gainstaging_db_display->setText(buf);
272 ui->makeup_gain_knob->setValue(lrintf(final_makeup_gain_db * 10.0f));
273 snprintf(buf, sizeof(buf), "%+.1f dB", final_makeup_gain_db);
274 ui->makeup_gain_db_display->setText(buf);
278 void MainWindow::relayout()
280 int height = ui->vertical_layout->geometry().height();
282 double remaining_height = height;
284 // Allocate the height; the most important part is to keep the main displays
285 // at 16:9 if at all possible.
286 double me_width = ui->me_preview->width();
287 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
289 // TODO: Scale the widths when we need to do this.
290 if (me_height / double(height) > 0.8) {
291 me_height = height * 0.8;
293 remaining_height -= me_height + ui->vertical_layout->spacing();
295 double audiostrip_height = ui->audiostrip->geometry().height();
296 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
298 // The previews will be constrained by the remaining height, and the width.
299 double preview_label_height = previews[0]->title_bar->geometry().height() +
300 previews[0]->main_vertical_layout->spacing();
301 int preview_total_width = ui->preview_displays->geometry().width() - (previews.size() - 1) * ui->preview_displays->spacing();
302 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
303 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
305 ui->vertical_layout->setStretch(0, lrintf(me_height));
306 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
307 ui->vertical_layout->setStretch(2, max<int>(1, remaining_height)); // Spacer.
308 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
310 // Set the widths for the previews.
311 double preview_width = preview_height * 16.0 / 9.0;
312 for (unsigned i = 0; i < previews.size(); ++i) {
313 ui->preview_displays->setStretch(i, lrintf(preview_width));
316 // The preview horizontal spacer.
317 double remaining_preview_width = preview_total_width - previews.size() * preview_width;
318 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
321 void MainWindow::set_transition_names(vector<string> transition_names)
323 if (transition_names.size() < 1 || transition_names[0].empty()) {
324 transition_btn1->setText(QString(""));
326 transition_btn1->setText(QString::fromStdString(transition_names[0] + " (J)"));
327 ui->transition_btn1->setShortcut(QKeySequence("J"));
329 if (transition_names.size() < 2 || transition_names[1].empty()) {
330 transition_btn2->setText(QString(""));
332 transition_btn2->setText(QString::fromStdString(transition_names[1] + " (K)"));
333 ui->transition_btn2->setShortcut(QKeySequence("K"));
335 if (transition_names.size() < 3 || transition_names[2].empty()) {
336 transition_btn3->setText(QString(""));
338 transition_btn3->setText(QString::fromStdString(transition_names[2] + " (L)"));
339 ui->transition_btn3->setShortcut(QKeySequence("L"));
343 void MainWindow::update_channel_name(Mixer::Output output)
345 if (output >= Mixer::OUTPUT_INPUT0) {
346 unsigned channel = output - Mixer::OUTPUT_INPUT0;
347 previews[channel]->label->setText(global_mixer->get_channel_name(output).c_str());
351 void MainWindow::update_channel_color(Mixer::Output output)
353 if (output >= Mixer::OUTPUT_INPUT0) {
354 unsigned channel = output - Mixer::OUTPUT_INPUT0;
355 string color = global_mixer->get_channel_color(output);
356 previews[channel]->frame->setStyleSheet(QString::fromStdString("background-color:" + color));
360 void MainWindow::transition_clicked(int transition_number)
362 global_mixer->transition_clicked(transition_number);
365 void MainWindow::channel_clicked(int channel_number)
367 if (current_wb_pick_display == channel_number) {
368 // The picking was already done from eventFilter(), since we don't get
369 // the mouse pointer here.
371 global_mixer->channel_clicked(channel_number);
375 void MainWindow::wb_button_clicked(int channel_number)
377 current_wb_pick_display = channel_number;
378 QApplication::setOverrideCursor(Qt::CrossCursor);
381 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
383 if (current_wb_pick_display != -1 &&
384 event->type() == QEvent::MouseButtonRelease &&
385 watched->isWidgetType()) {
386 QApplication::restoreOverrideCursor();
387 if (watched == previews[current_wb_pick_display]->display) {
388 const QMouseEvent *mouse_event = (QMouseEvent *)event;
389 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
391 // The user clicked on something else, give up.
392 // (The click goes through, which might not be ideal, but, yes.)
393 current_wb_pick_display = -1;
401 double srgb_to_linear(double x)
406 return pow((x + 0.055) / 1.055, 2.4);
412 void MainWindow::set_white_balance(int channel_number, int x, int y)
414 // Set the white balance to neutral for the grab. It's probably going to
415 // flicker a bit, but hopefully this display is not live anyway.
416 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
417 previews[channel_number]->display->updateGL();
418 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
420 double r = srgb_to_linear(qRed(reference_color) / 255.0);
421 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
422 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
423 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
424 previews[channel_number]->display->updateGL();