1 #include "mainwindow.h"
9 #include <QKeySequence>
12 #include <QPushButton>
13 #include <QResizeEvent>
21 #include "post_to_main_thread.h"
22 #include "ui_display.h"
23 #include "ui_mainwindow.h"
29 using namespace std::placeholders;
31 Q_DECLARE_METATYPE(std::vector<std::string>);
33 MainWindow *global_mainwindow = nullptr;
35 MainWindow::MainWindow()
36 : ui(new Ui::MainWindow)
38 global_mainwindow = this;
41 ui->me_live->set_output(Mixer::OUTPUT_LIVE);
42 ui->me_preview->set_output(Mixer::OUTPUT_PREVIEW);
45 connect(ui->cut_action, &QAction::triggered, this, &MainWindow::cut_triggered);
46 connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
48 // Hook up the transition buttons.
49 // TODO: Make them dynamic.
50 connect(ui->transition_btn1, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 0));
51 connect(ui->transition_btn2, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 1));
52 connect(ui->transition_btn3, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 2));
55 transition_btn1 = ui->transition_btn1;
56 transition_btn2 = ui->transition_btn2;
57 transition_btn3 = ui->transition_btn3;
58 qRegisterMetaType<vector<string>>("std::vector<std::string>");
59 connect(ui->me_preview, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
60 qRegisterMetaType<Mixer::Output>("Mixer::Output");
63 void MainWindow::resizeEvent(QResizeEvent* event)
65 QMainWindow::resizeEvent(event);
67 // Ask for a relayout, but only after the event loop is done doing relayout
68 // on everything else.
69 QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
72 void MainWindow::mixer_created(Mixer *mixer)
75 unsigned num_previews = mixer->get_num_channels();
77 for (unsigned i = 0; i < num_previews; ++i) {
78 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
80 QWidget *preview = new QWidget(this);
81 Ui::Display *ui_display = new Ui::Display;
82 ui_display->setupUi(preview);
83 ui_display->label->setText(mixer->get_channel_name(output).c_str());
84 ui_display->display->set_output(output);
85 ui->preview_displays->insertWidget(previews.size(), preview, 1);
86 previews.push_back(ui_display);
89 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
91 // Let the theme update the text whenever the resolution changed.
92 connect(ui_display->display, &GLWidget::resolution_updated, this, &MainWindow::update_channel_name);
94 // Hook up the keyboard key.
95 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
96 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
98 // Hook up the white balance button (irrelevant if invisible).
99 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
100 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
104 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_limiter_threshold_dbfs());
105 ui->limiter_threshold_db_display->setText(buf);
106 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_compressor_threshold_dbfs());
107 ui->compressor_threshold_db_display->setText(buf);
109 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
110 cutoff_knob_changed(ui->locut_cutoff_knob->value());
112 // Not QDial::valueChanged, as we call setValue() all the time.
113 connect(ui->gainstaging_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::gain_staging_knob_changed);
114 connect(ui->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
115 global_mixer->set_gain_staging_auto(state == Qt::Checked);
118 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
119 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
120 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
121 global_mixer->set_limiter_enabled(state == Qt::Checked);
123 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
124 global_mixer->set_compressor_enabled(state == Qt::Checked);
126 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
127 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6));
130 void MainWindow::mixer_shutting_down()
132 ui->me_live->clean_context();
133 ui->me_preview->clean_context();
134 for (Ui::Display *display : previews) {
135 display->display->clean_context();
139 void MainWindow::cut_triggered()
141 global_mixer->schedule_cut();
144 void MainWindow::exit_triggered()
149 void MainWindow::gain_staging_knob_changed(int value)
151 ui->gainstaging_auto_checkbox->setCheckState(Qt::Unchecked);
153 float gain_db = value * 0.1f;
154 global_mixer->set_gain_staging_db(gain_db);
156 // The label will be updated by the audio level callback.
159 void MainWindow::cutoff_knob_changed(int value)
161 float octaves = value * 0.1f;
162 float cutoff_hz = 20.0 * pow(2.0, octaves);
163 global_mixer->set_locut_cutoff(cutoff_hz);
166 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
167 ui->locut_cutoff_display->setText(buf);
170 void MainWindow::limiter_threshold_knob_changed(int value)
172 float threshold_dbfs = value * 0.1f;
173 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
176 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
177 ui->limiter_threshold_db_display->setText(buf);
180 void MainWindow::compressor_threshold_knob_changed(int value)
182 float threshold_dbfs = value * 0.1f;
183 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
186 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
187 ui->compressor_threshold_db_display->setText(buf);
190 void MainWindow::reset_meters_button_clicked()
192 global_mixer->reset_meters();
193 ui->peak_display->setText("-inf");
194 ui->peak_display->setStyleSheet("");
197 void MainWindow::audio_level_callback(float level_lufs, float peak_db, float global_level_lufs, float range_low_lufs, float range_high_lufs, float gain_staging_db)
200 gettimeofday(&now, nullptr);
202 // The meters are somewhat inefficient to update. Only update them
203 // every 100 ms or so (we get updates every 5–20 ms).
204 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
205 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
206 if (last_update_age < 0.100) {
209 last_audio_level_callback = now;
211 post_to_main_thread([=]() {
212 ui->vu_meter->set_level(level_lufs);
213 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
216 snprintf(buf, sizeof(buf), "%.1f", peak_db);
217 ui->peak_display->setText(buf);
218 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
219 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
221 ui->peak_display->setStyleSheet("");
224 ui->gainstaging_knob->setValue(lrintf(gain_staging_db * 10.0f));
225 snprintf(buf, sizeof(buf), "%+.1f dB", gain_staging_db);
226 ui->gainstaging_db_display->setText(buf);
230 void MainWindow::relayout()
232 int height = ui->vertical_layout->geometry().height();
234 double remaining_height = height;
236 // Allocate the height; the most important part is to keep the main displays
237 // at 16:9 if at all possible.
238 double me_width = ui->me_preview->width();
239 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
241 // TODO: Scale the widths when we need to do this.
242 if (me_height / double(height) > 0.8) {
243 me_height = height * 0.8;
245 remaining_height -= me_height + ui->vertical_layout->spacing();
247 double audiostrip_height = ui->audiostrip->geometry().height();
248 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
250 // The previews will be constrained by the remaining height, and the width.
251 double preview_label_height = previews[0]->title_bar->geometry().height() + ui->preview_displays->spacing(); // Wrong spacing?
252 int preview_total_width = ui->preview_displays->geometry().width();
253 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
254 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
256 ui->vertical_layout->setStretch(0, lrintf(me_height));
257 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
258 ui->vertical_layout->setStretch(2, max<int>(1, remaining_height)); // Spacer.
259 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
261 // Set the widths for the previews.
262 double preview_width = preview_height * 16.0 / 9.0;
263 double remaining_preview_width = preview_total_width;
265 for (unsigned i = 0; i < previews.size(); ++i) {
266 ui->preview_displays->setStretch(i, lrintf(preview_width));
267 remaining_preview_width -= preview_width + ui->preview_displays->spacing();
270 // The preview horizontal spacer.
271 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
274 void MainWindow::set_transition_names(vector<string> transition_names)
276 if (transition_names.size() < 1) {
277 transition_btn1->setText(QString(""));
279 transition_btn1->setText(QString::fromStdString(transition_names[0]));
281 if (transition_names.size() < 2) {
282 transition_btn2->setText(QString(""));
284 transition_btn2->setText(QString::fromStdString(transition_names[1]));
286 if (transition_names.size() < 3) {
287 transition_btn3->setText(QString(""));
289 transition_btn3->setText(QString::fromStdString(transition_names[2]));
293 void MainWindow::update_channel_name(Mixer::Output output)
295 if (output >= Mixer::OUTPUT_INPUT0) {
296 unsigned channel = output - Mixer::OUTPUT_INPUT0;
297 previews[channel]->label->setText(global_mixer->get_channel_name(output).c_str());
301 void MainWindow::transition_clicked(int transition_number)
303 global_mixer->transition_clicked(transition_number);
306 void MainWindow::channel_clicked(int channel_number)
308 if (current_wb_pick_display == channel_number) {
309 // The picking was already done from eventFilter(), since we don't get
310 // the mouse pointer here.
312 global_mixer->channel_clicked(channel_number);
316 void MainWindow::wb_button_clicked(int channel_number)
318 current_wb_pick_display = channel_number;
319 QApplication::setOverrideCursor(Qt::CrossCursor);
322 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
324 if (current_wb_pick_display != -1 &&
325 event->type() == QEvent::MouseButtonRelease &&
326 watched->isWidgetType()) {
327 QApplication::restoreOverrideCursor();
328 if (watched == previews[current_wb_pick_display]->display) {
329 const QMouseEvent *mouse_event = (QMouseEvent *)event;
330 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
332 // The user clicked on something else, give up.
333 // (The click goes through, which might not be ideal, but, yes.)
334 current_wb_pick_display = -1;
342 double srgb_to_linear(double x)
347 return pow((x + 0.055) / 1.055, 2.4);
353 void MainWindow::set_white_balance(int channel_number, int x, int y)
355 // Set the white balance to neutral for the grab. It's probably going to
356 // flicker a bit, but hopefully this display is not live anyway.
357 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
358 previews[channel_number]->display->updateGL();
359 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
361 double r = srgb_to_linear(qRed(reference_color) / 255.0);
362 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
363 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
364 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
365 previews[channel_number]->display->updateGL();