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::string);
34 Q_DECLARE_METATYPE(std::vector<std::string>);
36 MainWindow *global_mainwindow = nullptr;
40 void schedule_cut_signal(int ignored)
42 global_mixer->schedule_cut();
45 void quit_signal(int ignored)
47 global_mainwindow->close();
52 MainWindow::MainWindow()
53 : ui(new Ui::MainWindow)
55 global_mainwindow = this;
58 ui->me_live->set_output(Mixer::OUTPUT_LIVE);
59 ui->me_preview->set_output(Mixer::OUTPUT_PREVIEW);
62 connect(ui->cut_action, &QAction::triggered, this, &MainWindow::cut_triggered);
63 connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
64 connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered),
66 // Hook up the transition buttons. (Keyboard shortcuts are set in set_transition_names().)
67 // TODO: Make them dynamic.
68 connect(ui->transition_btn1, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 0));
69 connect(ui->transition_btn2, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 1));
70 connect(ui->transition_btn3, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 2));
73 transition_btn1 = ui->transition_btn1;
74 transition_btn2 = ui->transition_btn2;
75 transition_btn3 = ui->transition_btn3;
76 qRegisterMetaType<string>("std::string");
77 qRegisterMetaType<vector<string>>("std::vector<std::string>");
78 connect(ui->me_live, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
79 qRegisterMetaType<Mixer::Output>("Mixer::Output");
82 void MainWindow::resizeEvent(QResizeEvent* event)
84 QMainWindow::resizeEvent(event);
86 // Ask for a relayout, but only after the event loop is done doing relayout
87 // on everything else.
88 QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
91 void MainWindow::mixer_created(Mixer *mixer)
94 unsigned num_previews = mixer->get_num_channels();
96 for (unsigned i = 0; i < num_previews; ++i) {
97 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
99 QWidget *preview = new QWidget(this);
100 Ui::Display *ui_display = new Ui::Display;
101 ui_display->setupUi(preview);
102 ui_display->label->setText(mixer->get_channel_name(output).c_str());
103 ui_display->display->set_output(output);
104 ui->preview_displays->insertWidget(previews.size(), preview, 1);
105 previews.push_back(ui_display);
107 // Hook up the click.
108 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
110 // Let the theme update the text whenever the resolution or color changed.
111 connect(ui_display->display, &GLWidget::name_updated, this, &MainWindow::update_channel_name);
112 connect(ui_display->display, &GLWidget::color_updated, this, &MainWindow::update_channel_color);
114 // Hook up the keyboard key.
115 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
116 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
118 // Hook up the white balance button (irrelevant if invisible).
119 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
120 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
123 // TODO: Fetch all of the values these for completeness,
124 // not just the enable knobs implied by --flat-audio.
125 ui->locut_enabled->setChecked(global_mixer->get_locut_enabled());
126 ui->gainstaging_auto_checkbox->setChecked(global_mixer->get_gain_staging_auto());
127 ui->limiter_enabled->setChecked(global_mixer->get_limiter_enabled());
128 ui->compressor_enabled->setChecked(global_mixer->get_compressor_enabled());
131 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_limiter_threshold_dbfs());
132 ui->limiter_threshold_db_display->setText(buf);
133 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_compressor_threshold_dbfs());
134 ui->compressor_threshold_db_display->setText(buf);
136 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
137 cutoff_knob_changed(ui->locut_cutoff_knob->value());
138 connect(ui->locut_enabled, &QCheckBox::stateChanged, [this](int state){
139 global_mixer->set_locut_enabled(state == Qt::Checked);
142 connect(ui->gainstaging_knob, &QAbstractSlider::valueChanged, this, &MainWindow::gain_staging_knob_changed);
143 connect(ui->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
144 global_mixer->set_gain_staging_auto(state == Qt::Checked);
146 connect(ui->makeup_gain_knob, &QAbstractSlider::valueChanged, this, &MainWindow::final_makeup_gain_knob_changed);
147 connect(ui->makeup_gain_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
148 global_mixer->set_final_makeup_gain_auto(state == Qt::Checked);
151 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
152 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
153 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
154 global_mixer->set_limiter_enabled(state == Qt::Checked);
156 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
157 global_mixer->set_compressor_enabled(state == Qt::Checked);
159 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
160 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6, _7, _8));
162 struct sigaction act;
163 memset(&act, 0, sizeof(act));
164 act.sa_handler = schedule_cut_signal;
165 act.sa_flags = SA_RESTART;
166 sigaction(SIGHUP, &act, nullptr);
168 // Mostly for debugging. Don't override SIGINT, that's so evil if
169 // shutdown isn't instant.
170 memset(&act, 0, sizeof(act));
171 act.sa_handler = quit_signal;
172 act.sa_flags = SA_RESTART;
173 sigaction(SIGUSR1, &act, nullptr);
176 void MainWindow::mixer_shutting_down()
178 ui->me_live->clean_context();
179 ui->me_preview->clean_context();
180 for (Ui::Display *display : previews) {
181 display->display->clean_context();
185 void MainWindow::cut_triggered()
187 global_mixer->schedule_cut();
190 void MainWindow::exit_triggered()
195 void MainWindow::about_triggered()
197 AboutDialog().exec();
200 void MainWindow::gain_staging_knob_changed(int value)
202 ui->gainstaging_auto_checkbox->setCheckState(Qt::Unchecked);
204 float gain_db = value * 0.1f;
205 global_mixer->set_gain_staging_db(gain_db);
207 // The label will be updated by the audio level callback.
210 void MainWindow::final_makeup_gain_knob_changed(int value)
212 ui->makeup_gain_auto_checkbox->setCheckState(Qt::Unchecked);
214 float gain_db = value * 0.1f;
215 global_mixer->set_final_makeup_gain_db(gain_db);
217 // The label will be updated by the audio level callback.
220 void MainWindow::cutoff_knob_changed(int value)
222 float octaves = value * 0.1f;
223 float cutoff_hz = 20.0 * pow(2.0, octaves);
224 global_mixer->set_locut_cutoff(cutoff_hz);
227 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
228 ui->locut_cutoff_display->setText(buf);
231 void MainWindow::limiter_threshold_knob_changed(int value)
233 float threshold_dbfs = value * 0.1f;
234 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
237 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
238 ui->limiter_threshold_db_display->setText(buf);
241 void MainWindow::compressor_threshold_knob_changed(int value)
243 float threshold_dbfs = value * 0.1f;
244 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
247 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
248 ui->compressor_threshold_db_display->setText(buf);
251 void MainWindow::reset_meters_button_clicked()
253 global_mixer->reset_meters();
254 ui->peak_display->setText("-inf");
255 ui->peak_display->setStyleSheet("");
258 void MainWindow::audio_level_callback(float level_lufs, float peak_db, float global_level_lufs,
259 float range_low_lufs, float range_high_lufs,
260 float gain_staging_db, float final_makeup_gain_db,
264 gettimeofday(&now, nullptr);
266 // The meters are somewhat inefficient to update. Only update them
267 // every 100 ms or so (we get updates every 5–20 ms).
268 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
269 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
270 if (last_update_age < 0.100) {
273 last_audio_level_callback = now;
275 post_to_main_thread([=]() {
276 ui->vu_meter->set_level(level_lufs);
277 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
278 ui->correlation_meter->set_correlation(correlation);
281 snprintf(buf, sizeof(buf), "%.1f", peak_db);
282 ui->peak_display->setText(buf);
283 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
284 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
286 ui->peak_display->setStyleSheet("");
289 ui->gainstaging_knob->blockSignals(true);
290 ui->gainstaging_knob->setValue(lrintf(gain_staging_db * 10.0f));
291 ui->gainstaging_knob->blockSignals(false);
292 snprintf(buf, sizeof(buf), "%+.1f dB", gain_staging_db);
293 ui->gainstaging_db_display->setText(buf);
295 ui->makeup_gain_knob->blockSignals(true);
296 ui->makeup_gain_knob->setValue(lrintf(final_makeup_gain_db * 10.0f));
297 ui->makeup_gain_knob->blockSignals(false);
298 snprintf(buf, sizeof(buf), "%+.1f dB", final_makeup_gain_db);
299 ui->makeup_gain_db_display->setText(buf);
303 void MainWindow::relayout()
305 int height = ui->vertical_layout->geometry().height();
307 double remaining_height = height;
309 // Allocate the height; the most important part is to keep the main displays
310 // at 16:9 if at all possible.
311 double me_width = ui->me_preview->width();
312 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
314 // TODO: Scale the widths when we need to do this.
315 if (me_height / double(height) > 0.8) {
316 me_height = height * 0.8;
318 remaining_height -= me_height + ui->vertical_layout->spacing();
320 double audiostrip_height = ui->audiostrip->geometry().height();
321 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
323 // The previews will be constrained by the remaining height, and the width.
324 double preview_label_height = previews[0]->title_bar->geometry().height() +
325 previews[0]->main_vertical_layout->spacing();
326 int preview_total_width = ui->preview_displays->geometry().width() - (previews.size() - 1) * ui->preview_displays->spacing();
327 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
328 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
330 ui->vertical_layout->setStretch(0, lrintf(me_height));
331 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
332 ui->vertical_layout->setStretch(2, max<int>(1, remaining_height)); // Spacer.
333 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
335 // Set the widths for the previews.
336 double preview_width = preview_height * 16.0 / 9.0;
337 for (unsigned i = 0; i < previews.size(); ++i) {
338 ui->preview_displays->setStretch(i, lrintf(preview_width));
341 // The preview horizontal spacer.
342 double remaining_preview_width = preview_total_width - previews.size() * preview_width;
343 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
346 void MainWindow::set_transition_names(vector<string> transition_names)
348 if (transition_names.size() < 1 || transition_names[0].empty()) {
349 transition_btn1->setText(QString(""));
351 transition_btn1->setText(QString::fromStdString(transition_names[0] + " (J)"));
352 ui->transition_btn1->setShortcut(QKeySequence("J"));
354 if (transition_names.size() < 2 || transition_names[1].empty()) {
355 transition_btn2->setText(QString(""));
357 transition_btn2->setText(QString::fromStdString(transition_names[1] + " (K)"));
358 ui->transition_btn2->setShortcut(QKeySequence("K"));
360 if (transition_names.size() < 3 || transition_names[2].empty()) {
361 transition_btn3->setText(QString(""));
363 transition_btn3->setText(QString::fromStdString(transition_names[2] + " (L)"));
364 ui->transition_btn3->setShortcut(QKeySequence("L"));
368 void MainWindow::update_channel_name(Mixer::Output output, const string &name)
370 if (output >= Mixer::OUTPUT_INPUT0) {
371 unsigned channel = output - Mixer::OUTPUT_INPUT0;
372 previews[channel]->label->setText(name.c_str());
376 void MainWindow::update_channel_color(Mixer::Output output, const string &color)
378 if (output >= Mixer::OUTPUT_INPUT0) {
379 unsigned channel = output - Mixer::OUTPUT_INPUT0;
380 previews[channel]->frame->setStyleSheet(QString::fromStdString("background-color:" + color));
384 void MainWindow::transition_clicked(int transition_number)
386 global_mixer->transition_clicked(transition_number);
389 void MainWindow::channel_clicked(int channel_number)
391 if (current_wb_pick_display == channel_number) {
392 // The picking was already done from eventFilter(), since we don't get
393 // the mouse pointer here.
395 global_mixer->channel_clicked(channel_number);
399 void MainWindow::wb_button_clicked(int channel_number)
401 current_wb_pick_display = channel_number;
402 QApplication::setOverrideCursor(Qt::CrossCursor);
405 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
407 if (current_wb_pick_display != -1 &&
408 event->type() == QEvent::MouseButtonRelease &&
409 watched->isWidgetType()) {
410 QApplication::restoreOverrideCursor();
411 if (watched == previews[current_wb_pick_display]->display) {
412 const QMouseEvent *mouse_event = (QMouseEvent *)event;
413 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
415 // The user clicked on something else, give up.
416 // (The click goes through, which might not be ideal, but, yes.)
417 current_wb_pick_display = -1;
425 double srgb_to_linear(double x)
430 return pow((x + 0.055) / 1.055, 2.4);
436 void MainWindow::set_white_balance(int channel_number, int x, int y)
438 // Set the white balance to neutral for the grab. It's probably going to
439 // flicker a bit, but hopefully this display is not live anyway.
440 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
441 previews[channel_number]->display->updateGL();
442 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
444 double r = srgb_to_linear(qRed(reference_color) / 255.0);
445 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
446 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
447 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
448 previews[channel_number]->display->updateGL();