1 #include "mainwindow.h"
9 #include <QKeySequence>
12 #include <QPushButton>
13 #include <QResizeEvent>
18 #include "aboutdialog.h"
22 #include "post_to_main_thread.h"
23 #include "ui_display.h"
24 #include "ui_mainwindow.h"
30 using namespace std::placeholders;
32 Q_DECLARE_METATYPE(std::vector<std::string>);
34 MainWindow *global_mainwindow = nullptr;
36 MainWindow::MainWindow()
37 : ui(new Ui::MainWindow)
39 global_mainwindow = this;
42 ui->me_live->set_output(Mixer::OUTPUT_LIVE);
43 ui->me_preview->set_output(Mixer::OUTPUT_PREVIEW);
46 connect(ui->cut_action, &QAction::triggered, this, &MainWindow::cut_triggered);
47 connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
48 connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered),
50 // Hook up the transition buttons. (Keyboard shortcuts are set in set_transition_names().)
51 // TODO: Make them dynamic.
52 connect(ui->transition_btn1, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 0));
53 connect(ui->transition_btn2, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 1));
54 connect(ui->transition_btn3, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 2));
57 transition_btn1 = ui->transition_btn1;
58 transition_btn2 = ui->transition_btn2;
59 transition_btn3 = ui->transition_btn3;
60 qRegisterMetaType<vector<string>>("std::vector<std::string>");
61 connect(ui->me_preview, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
62 qRegisterMetaType<Mixer::Output>("Mixer::Output");
65 void MainWindow::resizeEvent(QResizeEvent* event)
67 QMainWindow::resizeEvent(event);
69 // Ask for a relayout, but only after the event loop is done doing relayout
70 // on everything else.
71 QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
74 void MainWindow::mixer_created(Mixer *mixer)
77 unsigned num_previews = mixer->get_num_channels();
79 for (unsigned i = 0; i < num_previews; ++i) {
80 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
82 QWidget *preview = new QWidget(this);
83 Ui::Display *ui_display = new Ui::Display;
84 ui_display->setupUi(preview);
85 ui_display->label->setText(mixer->get_channel_name(output).c_str());
86 ui_display->display->set_output(output);
87 ui->preview_displays->insertWidget(previews.size(), preview, 1);
88 previews.push_back(ui_display);
91 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
93 // Let the theme update the text whenever the resolution or color changed.
94 connect(ui_display->display, &GLWidget::resolution_updated, this, &MainWindow::update_channel_name);
95 connect(ui_display->display, &GLWidget::color_updated, this, &MainWindow::update_channel_color);
97 // Hook up the keyboard key.
98 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
99 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
101 // Hook up the white balance button (irrelevant if invisible).
102 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
103 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
107 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_limiter_threshold_dbfs());
108 ui->limiter_threshold_db_display->setText(buf);
109 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_compressor_threshold_dbfs());
110 ui->compressor_threshold_db_display->setText(buf);
112 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
113 cutoff_knob_changed(ui->locut_cutoff_knob->value());
114 connect(ui->locut_enabled, &QCheckBox::stateChanged, [this](int state){
115 global_mixer->set_locut_enabled(state == Qt::Checked);
118 // Not QDial::valueChanged, as we call setValue() all the time.
119 connect(ui->gainstaging_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::gain_staging_knob_changed);
120 connect(ui->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
121 global_mixer->set_gain_staging_auto(state == Qt::Checked);
123 connect(ui->makeup_gain_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::final_makeup_gain_knob_changed);
124 connect(ui->makeup_gain_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
125 global_mixer->set_final_makeup_gain_auto(state == Qt::Checked);
128 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
129 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
130 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
131 global_mixer->set_limiter_enabled(state == Qt::Checked);
133 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
134 global_mixer->set_compressor_enabled(state == Qt::Checked);
136 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
137 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6, _7, _8));
140 void MainWindow::mixer_shutting_down()
142 ui->me_live->clean_context();
143 ui->me_preview->clean_context();
144 for (Ui::Display *display : previews) {
145 display->display->clean_context();
149 void MainWindow::cut_triggered()
151 global_mixer->schedule_cut();
154 void MainWindow::exit_triggered()
159 void MainWindow::about_triggered()
161 AboutDialog().exec();
164 void MainWindow::gain_staging_knob_changed(int value)
166 ui->gainstaging_auto_checkbox->setCheckState(Qt::Unchecked);
168 float gain_db = value * 0.1f;
169 global_mixer->set_gain_staging_db(gain_db);
171 // The label will be updated by the audio level callback.
174 void MainWindow::final_makeup_gain_knob_changed(int value)
176 ui->makeup_gain_auto_checkbox->setCheckState(Qt::Unchecked);
178 float gain_db = value * 0.1f;
179 global_mixer->set_final_makeup_gain_db(gain_db);
181 // The label will be updated by the audio level callback.
184 void MainWindow::cutoff_knob_changed(int value)
186 float octaves = value * 0.1f;
187 float cutoff_hz = 20.0 * pow(2.0, octaves);
188 global_mixer->set_locut_cutoff(cutoff_hz);
191 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
192 ui->locut_cutoff_display->setText(buf);
195 void MainWindow::limiter_threshold_knob_changed(int value)
197 float threshold_dbfs = value * 0.1f;
198 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
201 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
202 ui->limiter_threshold_db_display->setText(buf);
205 void MainWindow::compressor_threshold_knob_changed(int value)
207 float threshold_dbfs = value * 0.1f;
208 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
211 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
212 ui->compressor_threshold_db_display->setText(buf);
215 void MainWindow::reset_meters_button_clicked()
217 global_mixer->reset_meters();
218 ui->peak_display->setText("-inf");
219 ui->peak_display->setStyleSheet("");
222 void MainWindow::audio_level_callback(float level_lufs, float peak_db, float global_level_lufs,
223 float range_low_lufs, float range_high_lufs,
224 float gain_staging_db, float final_makeup_gain_db,
228 gettimeofday(&now, nullptr);
230 // The meters are somewhat inefficient to update. Only update them
231 // every 100 ms or so (we get updates every 5–20 ms).
232 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
233 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
234 if (last_update_age < 0.100) {
237 last_audio_level_callback = now;
239 post_to_main_thread([=]() {
240 ui->vu_meter->set_level(level_lufs);
241 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
242 ui->correlation_meter->set_correlation(correlation);
245 snprintf(buf, sizeof(buf), "%.1f", peak_db);
246 ui->peak_display->setText(buf);
247 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
248 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
250 ui->peak_display->setStyleSheet("");
253 ui->gainstaging_knob->setValue(lrintf(gain_staging_db * 10.0f));
254 snprintf(buf, sizeof(buf), "%+.1f dB", gain_staging_db);
255 ui->gainstaging_db_display->setText(buf);
257 ui->makeup_gain_knob->setValue(lrintf(final_makeup_gain_db * 10.0f));
258 snprintf(buf, sizeof(buf), "%+.1f dB", final_makeup_gain_db);
259 ui->makeup_gain_db_display->setText(buf);
263 void MainWindow::relayout()
265 int height = ui->vertical_layout->geometry().height();
267 double remaining_height = height;
269 // Allocate the height; the most important part is to keep the main displays
270 // at 16:9 if at all possible.
271 double me_width = ui->me_preview->width();
272 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
274 // TODO: Scale the widths when we need to do this.
275 if (me_height / double(height) > 0.8) {
276 me_height = height * 0.8;
278 remaining_height -= me_height + ui->vertical_layout->spacing();
280 double audiostrip_height = ui->audiostrip->geometry().height();
281 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
283 // The previews will be constrained by the remaining height, and the width.
284 double preview_label_height = previews[0]->title_bar->geometry().height() +
285 previews[0]->main_vertical_layout->spacing();
286 int preview_total_width = ui->preview_displays->geometry().width() - (previews.size() - 1) * ui->preview_displays->spacing();
287 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
288 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
290 ui->vertical_layout->setStretch(0, lrintf(me_height));
291 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
292 ui->vertical_layout->setStretch(2, max<int>(1, remaining_height)); // Spacer.
293 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
295 // Set the widths for the previews.
296 double preview_width = preview_height * 16.0 / 9.0;
297 for (unsigned i = 0; i < previews.size(); ++i) {
298 ui->preview_displays->setStretch(i, lrintf(preview_width));
301 // The preview horizontal spacer.
302 double remaining_preview_width = preview_total_width - previews.size() * preview_width;
303 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
306 void MainWindow::set_transition_names(vector<string> transition_names)
308 if (transition_names.size() < 1 || transition_names[0].empty()) {
309 transition_btn1->setText(QString(""));
311 transition_btn1->setText(QString::fromStdString(transition_names[0] + " (J)"));
312 ui->transition_btn1->setShortcut(QKeySequence("J"));
314 if (transition_names.size() < 2 || transition_names[1].empty()) {
315 transition_btn2->setText(QString(""));
317 transition_btn2->setText(QString::fromStdString(transition_names[1] + " (K)"));
318 ui->transition_btn2->setShortcut(QKeySequence("K"));
320 if (transition_names.size() < 3 || transition_names[2].empty()) {
321 transition_btn3->setText(QString(""));
323 transition_btn3->setText(QString::fromStdString(transition_names[2] + " (L)"));
324 ui->transition_btn3->setShortcut(QKeySequence("L"));
328 void MainWindow::update_channel_name(Mixer::Output output)
330 if (output >= Mixer::OUTPUT_INPUT0) {
331 unsigned channel = output - Mixer::OUTPUT_INPUT0;
332 previews[channel]->label->setText(global_mixer->get_channel_name(output).c_str());
336 void MainWindow::update_channel_color(Mixer::Output output)
338 if (output >= Mixer::OUTPUT_INPUT0) {
339 unsigned channel = output - Mixer::OUTPUT_INPUT0;
340 string color = global_mixer->get_channel_color(output);
341 previews[channel]->frame->setStyleSheet(QString::fromStdString("background-color:" + color));
345 void MainWindow::transition_clicked(int transition_number)
347 global_mixer->transition_clicked(transition_number);
350 void MainWindow::channel_clicked(int channel_number)
352 if (current_wb_pick_display == channel_number) {
353 // The picking was already done from eventFilter(), since we don't get
354 // the mouse pointer here.
356 global_mixer->channel_clicked(channel_number);
360 void MainWindow::wb_button_clicked(int channel_number)
362 current_wb_pick_display = channel_number;
363 QApplication::setOverrideCursor(Qt::CrossCursor);
366 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
368 if (current_wb_pick_display != -1 &&
369 event->type() == QEvent::MouseButtonRelease &&
370 watched->isWidgetType()) {
371 QApplication::restoreOverrideCursor();
372 if (watched == previews[current_wb_pick_display]->display) {
373 const QMouseEvent *mouse_event = (QMouseEvent *)event;
374 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
376 // The user clicked on something else, give up.
377 // (The click goes through, which might not be ideal, but, yes.)
378 current_wb_pick_display = -1;
386 double srgb_to_linear(double x)
391 return pow((x + 0.055) / 1.055, 2.4);
397 void MainWindow::set_white_balance(int channel_number, int x, int y)
399 // Set the white balance to neutral for the grab. It's probably going to
400 // flicker a bit, but hopefully this display is not live anyway.
401 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
402 previews[channel_number]->display->updateGL();
403 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
405 double r = srgb_to_linear(qRed(reference_color) / 255.0);
406 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
407 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
408 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
409 previews[channel_number]->display->updateGL();