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);
47 // Hook up the transition buttons.
48 // TODO: Make them dynamic.
49 connect(ui->transition_btn1, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 0));
50 connect(ui->transition_btn2, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 1));
51 connect(ui->transition_btn3, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 2));
54 transition_btn1 = ui->transition_btn1;
55 transition_btn2 = ui->transition_btn2;
56 transition_btn3 = ui->transition_btn3;
57 qRegisterMetaType<vector<string>>("std::vector<std::string>");
58 connect(ui->me_preview, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
59 qRegisterMetaType<Mixer::Output>("Mixer::Output");
62 void MainWindow::resizeEvent(QResizeEvent* event)
64 QMainWindow::resizeEvent(event);
66 // Ask for a relayout, but only after the event loop is done doing relayout
67 // on everything else.
68 QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
71 void MainWindow::mixer_created(Mixer *mixer)
74 unsigned num_previews = mixer->get_num_channels();
76 for (unsigned i = 0; i < num_previews; ++i) {
77 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
79 QWidget *preview = new QWidget(this);
80 Ui::Display *ui_display = new Ui::Display;
81 ui_display->setupUi(preview);
82 ui_display->label->setText(mixer->get_channel_name(output).c_str());
83 ui_display->display->set_output(output);
84 ui->preview_displays->insertWidget(previews.size(), preview, 1);
85 previews.push_back(ui_display);
88 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
90 // Let the theme update the text whenever the resolution changed.
91 connect(ui_display->display, &GLWidget::resolution_updated, this, &MainWindow::update_channel_name);
93 // Hook up the keyboard key.
94 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
95 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
97 // Hook up the white balance button (irrelevant if invisible).
98 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
99 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
103 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_limiter_threshold_dbfs());
104 ui->limiter_threshold_db_display->setText(buf);
105 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_compressor_threshold_dbfs());
106 ui->compressor_threshold_db_display->setText(buf);
108 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
109 cutoff_knob_changed(ui->locut_cutoff_knob->value());
111 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
112 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
113 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
114 global_mixer->set_limiter_enabled(state == Qt::Checked);
116 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
117 global_mixer->set_compressor_enabled(state == Qt::Checked);
119 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
120 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6));
123 void MainWindow::mixer_shutting_down()
125 ui->me_live->clean_context();
126 ui->me_preview->clean_context();
127 for (Ui::Display *display : previews) {
128 display->display->clean_context();
132 void MainWindow::cut_triggered()
134 global_mixer->schedule_cut();
137 void MainWindow::cutoff_knob_changed(int value)
139 float octaves = value * 0.1f;
140 float cutoff_hz = 20.0 * pow(2.0, octaves);
141 global_mixer->set_locut_cutoff(cutoff_hz);
144 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
145 ui->locut_cutoff_display->setText(buf);
148 void MainWindow::limiter_threshold_knob_changed(int value)
150 float threshold_dbfs = value * 0.1f;
151 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
154 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
155 ui->limiter_threshold_db_display->setText(buf);
158 void MainWindow::compressor_threshold_knob_changed(int value)
160 float threshold_dbfs = value * 0.1f;
161 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
164 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
165 ui->compressor_threshold_db_display->setText(buf);
168 void MainWindow::reset_meters_button_clicked()
170 global_mixer->reset_meters();
171 ui->peak_display->setText("-inf");
172 ui->peak_display->setStyleSheet("");
175 void MainWindow::audio_level_callback(float level_lufs, float peak_db, float global_level_lufs, float range_low_lufs, float range_high_lufs, float auto_gain_staging_db)
178 gettimeofday(&now, nullptr);
180 // The meters are somewhat inefficient to update. Only update them
181 // every 100 ms or so (we get updates every 5–20 ms).
182 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
183 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
184 if (last_update_age < 0.100) {
187 last_audio_level_callback = now;
189 post_to_main_thread([=]() {
190 ui->vu_meter->set_level(level_lufs);
191 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
194 snprintf(buf, sizeof(buf), "%.1f", peak_db);
195 ui->peak_display->setText(buf);
196 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
197 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
199 ui->peak_display->setStyleSheet("");
202 ui->gainstaging_knob->setValue(lrintf(auto_gain_staging_db * 10.0f));
203 snprintf(buf, sizeof(buf), "%+.1f dB", auto_gain_staging_db);
204 ui->gainstaging_db_display->setText(buf);
208 void MainWindow::relayout()
210 int height = ui->vertical_layout->geometry().height();
212 double remaining_height = height;
214 // Allocate the height; the most important part is to keep the main displays
215 // at 16:9 if at all possible.
216 double me_width = ui->me_preview->width();
217 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
219 // TODO: Scale the widths when we need to do this.
220 if (me_height / double(height) > 0.8) {
221 me_height = height * 0.8;
223 remaining_height -= me_height + ui->vertical_layout->spacing();
225 double audiostrip_height = ui->audiostrip->geometry().height();
226 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
228 // The previews will be constrained by the remaining height, and the width.
229 double preview_label_height = previews[0]->title_bar->geometry().height() + ui->preview_displays->spacing(); // Wrong spacing?
230 int preview_total_width = ui->preview_displays->geometry().width();
231 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
232 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
234 ui->vertical_layout->setStretch(0, lrintf(me_height));
235 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
236 ui->vertical_layout->setStretch(2, max<int>(1, remaining_height)); // Spacer.
237 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
239 // Set the widths for the previews.
240 double preview_width = preview_height * 16.0 / 9.0;
241 double remaining_preview_width = preview_total_width;
243 for (unsigned i = 0; i < previews.size(); ++i) {
244 ui->preview_displays->setStretch(i, lrintf(preview_width));
245 remaining_preview_width -= preview_width + ui->preview_displays->spacing();
248 // The preview horizontal spacer.
249 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
252 void MainWindow::set_transition_names(vector<string> transition_names)
254 if (transition_names.size() < 1) {
255 transition_btn1->setText(QString(""));
257 transition_btn1->setText(QString::fromStdString(transition_names[0]));
259 if (transition_names.size() < 2) {
260 transition_btn2->setText(QString(""));
262 transition_btn2->setText(QString::fromStdString(transition_names[1]));
264 if (transition_names.size() < 3) {
265 transition_btn3->setText(QString(""));
267 transition_btn3->setText(QString::fromStdString(transition_names[2]));
271 void MainWindow::update_channel_name(Mixer::Output output)
273 if (output >= Mixer::OUTPUT_INPUT0) {
274 unsigned channel = output - Mixer::OUTPUT_INPUT0;
275 previews[channel]->label->setText(global_mixer->get_channel_name(output).c_str());
279 void MainWindow::transition_clicked(int transition_number)
281 global_mixer->transition_clicked(transition_number);
284 void MainWindow::channel_clicked(int channel_number)
286 if (current_wb_pick_display == channel_number) {
287 // The picking was already done from eventFilter(), since we don't get
288 // the mouse pointer here.
290 global_mixer->channel_clicked(channel_number);
294 void MainWindow::wb_button_clicked(int channel_number)
296 current_wb_pick_display = channel_number;
297 QApplication::setOverrideCursor(Qt::CrossCursor);
300 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
302 if (current_wb_pick_display != -1 &&
303 event->type() == QEvent::MouseButtonRelease &&
304 watched->isWidgetType()) {
305 QApplication::restoreOverrideCursor();
306 if (watched == previews[current_wb_pick_display]->display) {
307 const QMouseEvent *mouse_event = (QMouseEvent *)event;
308 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
310 // The user clicked on something else, give up.
311 // (The click goes through, which might not be ideal, but, yes.)
312 current_wb_pick_display = -1;
320 double srgb_to_linear(double x)
325 return pow((x + 0.055) / 1.055, 2.4);
331 void MainWindow::set_white_balance(int channel_number, int x, int y)
333 // Set the white balance to neutral for the grab. It's probably going to
334 // flicker a bit, but hopefully this display is not live anyway.
335 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
336 previews[channel_number]->display->updateGL();
337 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
339 double r = srgb_to_linear(qRed(reference_color) / 255.0);
340 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
341 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
342 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
343 previews[channel_number]->display->updateGL();