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.
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 changed.
94 connect(ui_display->display, &GLWidget::resolution_updated, this, &MainWindow::update_channel_name);
96 // Hook up the keyboard key.
97 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
98 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
100 // Hook up the white balance button (irrelevant if invisible).
101 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
102 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
106 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_limiter_threshold_dbfs());
107 ui->limiter_threshold_db_display->setText(buf);
108 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_compressor_threshold_dbfs());
109 ui->compressor_threshold_db_display->setText(buf);
111 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
112 cutoff_knob_changed(ui->locut_cutoff_knob->value());
113 connect(ui->locut_enabled, &QCheckBox::stateChanged, [this](int state){
114 global_mixer->set_locut_enabled(state == Qt::Checked);
117 // Not QDial::valueChanged, as we call setValue() all the time.
118 connect(ui->gainstaging_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::gain_staging_knob_changed);
119 connect(ui->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
120 global_mixer->set_gain_staging_auto(state == Qt::Checked);
122 connect(ui->makeup_gain_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::final_makeup_gain_knob_changed);
123 connect(ui->makeup_gain_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
124 global_mixer->set_final_makeup_gain_auto(state == Qt::Checked);
127 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
128 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
129 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
130 global_mixer->set_limiter_enabled(state == Qt::Checked);
132 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
133 global_mixer->set_compressor_enabled(state == Qt::Checked);
135 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
136 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6, _7, _8));
139 void MainWindow::mixer_shutting_down()
141 ui->me_live->clean_context();
142 ui->me_preview->clean_context();
143 for (Ui::Display *display : previews) {
144 display->display->clean_context();
148 void MainWindow::cut_triggered()
150 global_mixer->schedule_cut();
153 void MainWindow::exit_triggered()
158 void MainWindow::about_triggered()
160 AboutDialog().exec();
163 void MainWindow::gain_staging_knob_changed(int value)
165 ui->gainstaging_auto_checkbox->setCheckState(Qt::Unchecked);
167 float gain_db = value * 0.1f;
168 global_mixer->set_gain_staging_db(gain_db);
170 // The label will be updated by the audio level callback.
173 void MainWindow::final_makeup_gain_knob_changed(int value)
175 ui->makeup_gain_auto_checkbox->setCheckState(Qt::Unchecked);
177 float gain_db = value * 0.1f;
178 global_mixer->set_final_makeup_gain_db(gain_db);
180 // The label will be updated by the audio level callback.
183 void MainWindow::cutoff_knob_changed(int value)
185 float octaves = value * 0.1f;
186 float cutoff_hz = 20.0 * pow(2.0, octaves);
187 global_mixer->set_locut_cutoff(cutoff_hz);
190 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
191 ui->locut_cutoff_display->setText(buf);
194 void MainWindow::limiter_threshold_knob_changed(int value)
196 float threshold_dbfs = value * 0.1f;
197 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
200 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
201 ui->limiter_threshold_db_display->setText(buf);
204 void MainWindow::compressor_threshold_knob_changed(int value)
206 float threshold_dbfs = value * 0.1f;
207 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
210 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
211 ui->compressor_threshold_db_display->setText(buf);
214 void MainWindow::reset_meters_button_clicked()
216 global_mixer->reset_meters();
217 ui->peak_display->setText("-inf");
218 ui->peak_display->setStyleSheet("");
221 void MainWindow::audio_level_callback(float level_lufs, float peak_db, float global_level_lufs,
222 float range_low_lufs, float range_high_lufs,
223 float gain_staging_db, float final_makeup_gain_db,
227 gettimeofday(&now, nullptr);
229 // The meters are somewhat inefficient to update. Only update them
230 // every 100 ms or so (we get updates every 5–20 ms).
231 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
232 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
233 if (last_update_age < 0.100) {
236 last_audio_level_callback = now;
238 post_to_main_thread([=]() {
239 ui->vu_meter->set_level(level_lufs);
240 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
241 ui->correlation_meter->set_correlation(correlation);
244 snprintf(buf, sizeof(buf), "%.1f", peak_db);
245 ui->peak_display->setText(buf);
246 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
247 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
249 ui->peak_display->setStyleSheet("");
252 ui->gainstaging_knob->setValue(lrintf(gain_staging_db * 10.0f));
253 snprintf(buf, sizeof(buf), "%+.1f dB", gain_staging_db);
254 ui->gainstaging_db_display->setText(buf);
256 ui->makeup_gain_knob->setValue(lrintf(final_makeup_gain_db * 10.0f));
257 snprintf(buf, sizeof(buf), "%+.1f dB", final_makeup_gain_db);
258 ui->makeup_gain_db_display->setText(buf);
262 void MainWindow::relayout()
264 int height = ui->vertical_layout->geometry().height();
266 double remaining_height = height;
268 // Allocate the height; the most important part is to keep the main displays
269 // at 16:9 if at all possible.
270 double me_width = ui->me_preview->width();
271 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
273 // TODO: Scale the widths when we need to do this.
274 if (me_height / double(height) > 0.8) {
275 me_height = height * 0.8;
277 remaining_height -= me_height + ui->vertical_layout->spacing();
279 double audiostrip_height = ui->audiostrip->geometry().height();
280 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
282 // The previews will be constrained by the remaining height, and the width.
283 double preview_label_height = previews[0]->title_bar->geometry().height() +
284 previews[0]->main_vertical_layout->spacing();
285 int preview_total_width = ui->preview_displays->geometry().width() - (previews.size() - 1) * ui->preview_displays->spacing();
286 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
287 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
289 ui->vertical_layout->setStretch(0, lrintf(me_height));
290 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
291 ui->vertical_layout->setStretch(2, max<int>(1, remaining_height)); // Spacer.
292 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
294 // Set the widths for the previews.
295 double preview_width = preview_height * 16.0 / 9.0;
296 for (unsigned i = 0; i < previews.size(); ++i) {
297 ui->preview_displays->setStretch(i, lrintf(preview_width));
300 // The preview horizontal spacer.
301 double remaining_preview_width = preview_total_width - previews.size() * preview_width;
302 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
305 void MainWindow::set_transition_names(vector<string> transition_names)
307 if (transition_names.size() < 1) {
308 transition_btn1->setText(QString(""));
310 transition_btn1->setText(QString::fromStdString(transition_names[0]));
312 if (transition_names.size() < 2) {
313 transition_btn2->setText(QString(""));
315 transition_btn2->setText(QString::fromStdString(transition_names[1]));
317 if (transition_names.size() < 3) {
318 transition_btn3->setText(QString(""));
320 transition_btn3->setText(QString::fromStdString(transition_names[2]));
324 void MainWindow::update_channel_name(Mixer::Output output)
326 if (output >= Mixer::OUTPUT_INPUT0) {
327 unsigned channel = output - Mixer::OUTPUT_INPUT0;
328 previews[channel]->label->setText(global_mixer->get_channel_name(output).c_str());
332 void MainWindow::transition_clicked(int transition_number)
334 global_mixer->transition_clicked(transition_number);
337 void MainWindow::channel_clicked(int channel_number)
339 if (current_wb_pick_display == channel_number) {
340 // The picking was already done from eventFilter(), since we don't get
341 // the mouse pointer here.
343 global_mixer->channel_clicked(channel_number);
347 void MainWindow::wb_button_clicked(int channel_number)
349 current_wb_pick_display = channel_number;
350 QApplication::setOverrideCursor(Qt::CrossCursor);
353 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
355 if (current_wb_pick_display != -1 &&
356 event->type() == QEvent::MouseButtonRelease &&
357 watched->isWidgetType()) {
358 QApplication::restoreOverrideCursor();
359 if (watched == previews[current_wb_pick_display]->display) {
360 const QMouseEvent *mouse_event = (QMouseEvent *)event;
361 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
363 // The user clicked on something else, give up.
364 // (The click goes through, which might not be ideal, but, yes.)
365 current_wb_pick_display = -1;
373 double srgb_to_linear(double x)
378 return pow((x + 0.055) / 1.055, 2.4);
384 void MainWindow::set_white_balance(int channel_number, int x, int y)
386 // Set the white balance to neutral for the grab. It's probably going to
387 // flicker a bit, but hopefully this display is not live anyway.
388 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
389 previews[channel_number]->display->updateGL();
390 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
392 double r = srgb_to_linear(qRed(reference_color) / 255.0);
393 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
394 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
395 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
396 previews[channel_number]->display->updateGL();