1 #include "mainwindow.h"
10 #include <QInputDialog>
11 #include <QKeySequence>
14 #include <QPushButton>
15 #include <QResizeEvent>
20 #include "aboutdialog.h"
25 #include "post_to_main_thread.h"
26 #include "ui_display.h"
27 #include "ui_mainwindow.h"
33 using namespace std::placeholders;
35 Q_DECLARE_METATYPE(std::string);
36 Q_DECLARE_METATYPE(std::vector<std::string>);
38 MainWindow *global_mainwindow = nullptr;
42 void schedule_cut_signal(int ignored)
44 global_mixer->schedule_cut();
47 void quit_signal(int ignored)
49 global_mainwindow->close();
54 MainWindow::MainWindow()
55 : ui(new Ui::MainWindow)
57 global_mainwindow = this;
60 ui->me_live->set_output(Mixer::OUTPUT_LIVE);
61 ui->me_preview->set_output(Mixer::OUTPUT_PREVIEW);
64 connect(ui->cut_action, &QAction::triggered, this, &MainWindow::cut_triggered);
65 connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
66 connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered);
68 if (global_flags.x264_video_to_http) {
69 connect(ui->x264_bitrate_action, &QAction::triggered, this, &MainWindow::x264_bitrate_triggered);
71 ui->x264_bitrate_action->setEnabled(false);
74 // Hook up the transition buttons. (Keyboard shortcuts are set in set_transition_names().)
75 // TODO: Make them dynamic.
76 connect(ui->transition_btn1, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 0));
77 connect(ui->transition_btn2, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 1));
78 connect(ui->transition_btn3, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 2));
81 transition_btn1 = ui->transition_btn1;
82 transition_btn2 = ui->transition_btn2;
83 transition_btn3 = ui->transition_btn3;
84 qRegisterMetaType<string>("std::string");
85 qRegisterMetaType<vector<string>>("std::vector<std::string>");
86 connect(ui->me_live, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
87 qRegisterMetaType<Mixer::Output>("Mixer::Output");
90 void MainWindow::resizeEvent(QResizeEvent* event)
92 QMainWindow::resizeEvent(event);
94 // Ask for a relayout, but only after the event loop is done doing relayout
95 // on everything else.
96 QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
99 void MainWindow::mixer_created(Mixer *mixer)
101 // Make the previews.
102 unsigned num_previews = mixer->get_num_channels();
104 for (unsigned i = 0; i < num_previews; ++i) {
105 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
107 QWidget *preview = new QWidget(this);
108 Ui::Display *ui_display = new Ui::Display;
109 ui_display->setupUi(preview);
110 ui_display->label->setText(mixer->get_channel_name(output).c_str());
111 ui_display->display->set_output(output);
112 ui->preview_displays->insertWidget(previews.size(), preview, 1);
113 previews.push_back(ui_display);
115 // Hook up the click.
116 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
118 // Let the theme update the text whenever the resolution or color changed.
119 connect(ui_display->display, &GLWidget::name_updated, this, &MainWindow::update_channel_name);
120 connect(ui_display->display, &GLWidget::color_updated, this, &MainWindow::update_channel_color);
122 // Hook up the keyboard key.
123 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
124 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
126 // Hook up the white balance button (irrelevant if invisible).
127 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
128 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
131 // TODO: Fetch all of the values these for completeness,
132 // not just the enable knobs implied by flags.
133 ui->locut_enabled->setChecked(global_mixer->get_locut_enabled());
134 ui->gainstaging_knob->setValue(global_mixer->get_gain_staging_db());
135 ui->gainstaging_auto_checkbox->setChecked(global_mixer->get_gain_staging_auto());
136 ui->compressor_enabled->setChecked(global_mixer->get_compressor_enabled());
137 ui->limiter_enabled->setChecked(global_mixer->get_limiter_enabled());
138 ui->makeup_gain_auto_checkbox->setChecked(global_mixer->get_final_makeup_gain_auto());
141 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_limiter_threshold_dbfs());
142 ui->limiter_threshold_db_display->setText(buf);
143 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_compressor_threshold_dbfs());
144 ui->compressor_threshold_db_display->setText(buf);
146 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
147 cutoff_knob_changed(ui->locut_cutoff_knob->value());
148 connect(ui->locut_enabled, &QCheckBox::stateChanged, [this](int state){
149 global_mixer->set_locut_enabled(state == Qt::Checked);
152 connect(ui->gainstaging_knob, &QAbstractSlider::valueChanged, this, &MainWindow::gain_staging_knob_changed);
153 connect(ui->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
154 global_mixer->set_gain_staging_auto(state == Qt::Checked);
156 connect(ui->makeup_gain_knob, &QAbstractSlider::valueChanged, this, &MainWindow::final_makeup_gain_knob_changed);
157 connect(ui->makeup_gain_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
158 global_mixer->set_final_makeup_gain_auto(state == Qt::Checked);
161 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
162 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
163 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
164 global_mixer->set_limiter_enabled(state == Qt::Checked);
166 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
167 global_mixer->set_compressor_enabled(state == Qt::Checked);
169 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
170 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6, _7, _8));
172 struct sigaction act;
173 memset(&act, 0, sizeof(act));
174 act.sa_handler = schedule_cut_signal;
175 act.sa_flags = SA_RESTART;
176 sigaction(SIGHUP, &act, nullptr);
178 // Mostly for debugging. Don't override SIGINT, that's so evil if
179 // shutdown isn't instant.
180 memset(&act, 0, sizeof(act));
181 act.sa_handler = quit_signal;
182 act.sa_flags = SA_RESTART;
183 sigaction(SIGUSR1, &act, nullptr);
186 void MainWindow::mixer_shutting_down()
188 ui->me_live->clean_context();
189 ui->me_preview->clean_context();
190 for (Ui::Display *display : previews) {
191 display->display->clean_context();
195 void MainWindow::cut_triggered()
197 global_mixer->schedule_cut();
200 void MainWindow::x264_bitrate_triggered()
203 int new_bitrate = QInputDialog::getInt(this, "Change x264 bitrate", "Choose new bitrate for x264 HTTP output (from 100–100,000 kbit/sec):", global_flags.x264_bitrate, /*min=*/100, /*max=*/100000, /*step=*/100, &ok);
204 if (ok && new_bitrate >= 100 && new_bitrate <= 100000) {
205 global_flags.x264_bitrate = new_bitrate;
206 global_mixer->change_x264_bitrate(new_bitrate);
210 void MainWindow::exit_triggered()
215 void MainWindow::about_triggered()
217 AboutDialog().exec();
220 void MainWindow::gain_staging_knob_changed(int value)
222 ui->gainstaging_auto_checkbox->setCheckState(Qt::Unchecked);
224 float gain_db = value * 0.1f;
225 global_mixer->set_gain_staging_db(gain_db);
227 // The label will be updated by the audio level callback.
230 void MainWindow::final_makeup_gain_knob_changed(int value)
232 ui->makeup_gain_auto_checkbox->setCheckState(Qt::Unchecked);
234 float gain_db = value * 0.1f;
235 global_mixer->set_final_makeup_gain_db(gain_db);
237 // The label will be updated by the audio level callback.
240 void MainWindow::cutoff_knob_changed(int value)
242 float octaves = value * 0.1f;
243 float cutoff_hz = 20.0 * pow(2.0, octaves);
244 global_mixer->set_locut_cutoff(cutoff_hz);
247 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
248 ui->locut_cutoff_display->setText(buf);
251 void MainWindow::limiter_threshold_knob_changed(int value)
253 float threshold_dbfs = value * 0.1f;
254 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
257 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
258 ui->limiter_threshold_db_display->setText(buf);
261 void MainWindow::compressor_threshold_knob_changed(int value)
263 float threshold_dbfs = value * 0.1f;
264 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
267 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
268 ui->compressor_threshold_db_display->setText(buf);
271 void MainWindow::reset_meters_button_clicked()
273 global_mixer->reset_meters();
274 ui->peak_display->setText("-inf");
275 ui->peak_display->setStyleSheet("");
278 void MainWindow::audio_level_callback(float level_lufs, float peak_db, float global_level_lufs,
279 float range_low_lufs, float range_high_lufs,
280 float gain_staging_db, float final_makeup_gain_db,
284 gettimeofday(&now, nullptr);
286 // The meters are somewhat inefficient to update. Only update them
287 // every 100 ms or so (we get updates every 5–20 ms).
288 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
289 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
290 if (last_update_age < 0.100) {
293 last_audio_level_callback = now;
295 post_to_main_thread([=]() {
296 ui->vu_meter->set_level(level_lufs);
297 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
298 ui->correlation_meter->set_correlation(correlation);
301 snprintf(buf, sizeof(buf), "%.1f", peak_db);
302 ui->peak_display->setText(buf);
303 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
304 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
306 ui->peak_display->setStyleSheet("");
309 ui->gainstaging_knob->blockSignals(true);
310 ui->gainstaging_knob->setValue(lrintf(gain_staging_db * 10.0f));
311 ui->gainstaging_knob->blockSignals(false);
312 snprintf(buf, sizeof(buf), "%+.1f dB", gain_staging_db);
313 ui->gainstaging_db_display->setText(buf);
315 ui->makeup_gain_knob->blockSignals(true);
316 ui->makeup_gain_knob->setValue(lrintf(final_makeup_gain_db * 10.0f));
317 ui->makeup_gain_knob->blockSignals(false);
318 snprintf(buf, sizeof(buf), "%+.1f dB", final_makeup_gain_db);
319 ui->makeup_gain_db_display->setText(buf);
323 void MainWindow::relayout()
325 int height = ui->vertical_layout->geometry().height();
327 double remaining_height = height;
329 // Allocate the height; the most important part is to keep the main displays
330 // at 16:9 if at all possible.
331 double me_width = ui->me_preview->width();
332 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
334 // TODO: Scale the widths when we need to do this.
335 if (me_height / double(height) > 0.8) {
336 me_height = height * 0.8;
338 remaining_height -= me_height + ui->vertical_layout->spacing();
340 double audiostrip_height = ui->audiostrip->geometry().height();
341 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
343 // The previews will be constrained by the remaining height, and the width.
344 double preview_label_height = previews[0]->title_bar->geometry().height() +
345 previews[0]->main_vertical_layout->spacing();
346 int preview_total_width = ui->preview_displays->geometry().width() - (previews.size() - 1) * ui->preview_displays->spacing();
347 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
348 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
350 ui->vertical_layout->setStretch(0, lrintf(me_height));
351 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
352 ui->vertical_layout->setStretch(2, max<int>(1, remaining_height)); // Spacer.
353 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
355 // Set the widths for the previews.
356 double preview_width = preview_height * 16.0 / 9.0;
357 for (unsigned i = 0; i < previews.size(); ++i) {
358 ui->preview_displays->setStretch(i, lrintf(preview_width));
361 // The preview horizontal spacer.
362 double remaining_preview_width = preview_total_width - previews.size() * preview_width;
363 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
366 void MainWindow::set_transition_names(vector<string> transition_names)
368 if (transition_names.size() < 1 || transition_names[0].empty()) {
369 transition_btn1->setText(QString(""));
371 transition_btn1->setText(QString::fromStdString(transition_names[0] + " (J)"));
372 ui->transition_btn1->setShortcut(QKeySequence("J"));
374 if (transition_names.size() < 2 || transition_names[1].empty()) {
375 transition_btn2->setText(QString(""));
377 transition_btn2->setText(QString::fromStdString(transition_names[1] + " (K)"));
378 ui->transition_btn2->setShortcut(QKeySequence("K"));
380 if (transition_names.size() < 3 || transition_names[2].empty()) {
381 transition_btn3->setText(QString(""));
383 transition_btn3->setText(QString::fromStdString(transition_names[2] + " (L)"));
384 ui->transition_btn3->setShortcut(QKeySequence("L"));
388 void MainWindow::update_channel_name(Mixer::Output output, const string &name)
390 if (output >= Mixer::OUTPUT_INPUT0) {
391 unsigned channel = output - Mixer::OUTPUT_INPUT0;
392 previews[channel]->label->setText(name.c_str());
396 void MainWindow::update_channel_color(Mixer::Output output, const string &color)
398 if (output >= Mixer::OUTPUT_INPUT0) {
399 unsigned channel = output - Mixer::OUTPUT_INPUT0;
400 previews[channel]->frame->setStyleSheet(QString::fromStdString("background-color:" + color));
404 void MainWindow::transition_clicked(int transition_number)
406 global_mixer->transition_clicked(transition_number);
409 void MainWindow::channel_clicked(int channel_number)
411 if (current_wb_pick_display == channel_number) {
412 // The picking was already done from eventFilter(), since we don't get
413 // the mouse pointer here.
415 global_mixer->channel_clicked(channel_number);
419 void MainWindow::wb_button_clicked(int channel_number)
421 current_wb_pick_display = channel_number;
422 QApplication::setOverrideCursor(Qt::CrossCursor);
425 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
427 if (current_wb_pick_display != -1 &&
428 event->type() == QEvent::MouseButtonRelease &&
429 watched->isWidgetType()) {
430 QApplication::restoreOverrideCursor();
431 if (watched == previews[current_wb_pick_display]->display) {
432 const QMouseEvent *mouse_event = (QMouseEvent *)event;
433 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
435 // The user clicked on something else, give up.
436 // (The click goes through, which might not be ideal, but, yes.)
437 current_wb_pick_display = -1;
445 double srgb_to_linear(double x)
450 return pow((x + 0.055) / 1.055, 2.4);
456 void MainWindow::set_white_balance(int channel_number, int x, int y)
458 // Set the white balance to neutral for the grab. It's probably going to
459 // flicker a bit, but hopefully this display is not live anyway.
460 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
461 previews[channel_number]->display->updateGL();
462 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
464 double r = srgb_to_linear(qRed(reference_color) / 255.0);
465 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
466 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
467 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
468 previews[channel_number]->display->updateGL();