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);
44 // Hook up the transition buttons.
45 // TODO: Make them dynamic.
46 connect(ui->transition_btn1, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 0));
47 connect(ui->transition_btn2, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 1));
48 connect(ui->transition_btn3, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 2));
51 transition_btn1 = ui->transition_btn1;
52 transition_btn2 = ui->transition_btn2;
53 transition_btn3 = ui->transition_btn3;
54 qRegisterMetaType<vector<string>>("std::vector<std::string>");
55 connect(ui->me_preview, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
56 qRegisterMetaType<Mixer::Output>("Mixer::Output");
59 void MainWindow::resizeEvent(QResizeEvent* event)
61 QMainWindow::resizeEvent(event);
63 // Ask for a relayout, but only after the event loop is done doing relayout
64 // on everything else.
65 QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
68 void MainWindow::mixer_created(Mixer *mixer)
71 unsigned num_previews = mixer->get_num_channels();
73 for (unsigned i = 0; i < num_previews; ++i) {
74 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
76 QWidget *preview = new QWidget(this);
77 Ui::Display *ui_display = new Ui::Display;
78 ui_display->setupUi(preview);
79 ui_display->label->setText(mixer->get_channel_name(output).c_str());
80 ui_display->display->set_output(output);
81 ui->preview_displays->insertWidget(previews.size(), preview, 1);
82 previews.push_back(ui_display);
85 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
87 // Let the theme update the text whenever the resolution changed.
88 connect(ui_display->display, &GLWidget::resolution_updated, this, &MainWindow::update_channel_name);
90 // Hook up the keyboard key.
91 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
92 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
94 // Hook up the white balance button (irrelevant if invisible).
95 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
96 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
100 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_limiter_threshold_dbfs());
101 ui->limiter_threshold_db_display->setText(buf);
102 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_compressor_threshold_dbfs());
103 ui->compressor_threshold_db_display->setText(buf);
105 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
106 cutoff_knob_changed(ui->locut_cutoff_knob->value());
108 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
109 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
110 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
111 global_mixer->set_limiter_enabled(state == Qt::Checked);
113 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
114 global_mixer->set_compressor_enabled(state == Qt::Checked);
116 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
117 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6));
120 void MainWindow::mixer_shutting_down()
122 ui->me_live->clean_context();
123 ui->me_preview->clean_context();
124 for (Ui::Display *display : previews) {
125 display->display->clean_context();
129 void MainWindow::cutoff_knob_changed(int value)
131 float octaves = value * 0.1f;
132 float cutoff_hz = 20.0 * pow(2.0, octaves);
133 global_mixer->set_locut_cutoff(cutoff_hz);
136 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
137 ui->locut_cutoff_display->setText(buf);
140 void MainWindow::limiter_threshold_knob_changed(int value)
142 float threshold_dbfs = value * 0.1f;
143 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
146 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
147 ui->limiter_threshold_db_display->setText(buf);
150 void MainWindow::compressor_threshold_knob_changed(int value)
152 float threshold_dbfs = value * 0.1f;
153 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
156 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
157 ui->compressor_threshold_db_display->setText(buf);
160 void MainWindow::reset_meters_button_clicked()
162 global_mixer->reset_meters();
163 ui->peak_display->setText("-inf");
164 ui->peak_display->setStyleSheet("");
167 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)
170 gettimeofday(&now, nullptr);
172 // The meters are somewhat inefficient to update. Only update them
173 // every 100 ms or so (we get updates every 5–20 ms).
174 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
175 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
176 if (last_update_age < 0.100) {
179 last_audio_level_callback = now;
181 post_to_main_thread([=]() {
182 ui->vu_meter->set_level(level_lufs);
183 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
186 snprintf(buf, sizeof(buf), "%.1f", peak_db);
187 ui->peak_display->setText(buf);
188 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
189 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
191 ui->peak_display->setStyleSheet("");
194 ui->gainstaging_knob->setValue(lrintf(auto_gain_staging_db * 10.0f));
195 snprintf(buf, sizeof(buf), "%+.1f dB", auto_gain_staging_db);
196 ui->gainstaging_db_display->setText(buf);
200 void MainWindow::relayout()
202 int height = ui->vertical_layout->geometry().height();
204 double remaining_height = height;
206 // Allocate the height; the most important part is to keep the main displays
207 // at 16:9 if at all possible.
208 double me_width = ui->me_preview->width();
209 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
211 // TODO: Scale the widths when we need to do this.
212 if (me_height / double(height) > 0.8) {
213 me_height = height * 0.8;
215 remaining_height -= me_height + ui->vertical_layout->spacing();
217 double audiostrip_height = ui->audiostrip->geometry().height();
218 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
220 // The previews will be constrained by the remaining height, and the width.
221 double preview_label_height = previews[0]->title_bar->geometry().height() + ui->preview_displays->spacing(); // Wrong spacing?
222 int preview_total_width = ui->preview_displays->geometry().width();
223 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
224 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
226 ui->vertical_layout->setStretch(0, lrintf(me_height));
227 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
228 ui->vertical_layout->setStretch(2, max<int>(1, remaining_height)); // Spacer.
229 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
231 // Set the widths for the previews.
232 double preview_width = preview_height * 16.0 / 9.0;
233 double remaining_preview_width = preview_total_width;
235 for (unsigned i = 0; i < previews.size(); ++i) {
236 ui->preview_displays->setStretch(i, lrintf(preview_width));
237 remaining_preview_width -= preview_width + ui->preview_displays->spacing();
240 // The preview horizontal spacer.
241 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
244 void MainWindow::set_transition_names(vector<string> transition_names)
246 if (transition_names.size() < 1) {
247 transition_btn1->setText(QString(""));
249 transition_btn1->setText(QString::fromStdString(transition_names[0]));
251 if (transition_names.size() < 2) {
252 transition_btn2->setText(QString(""));
254 transition_btn2->setText(QString::fromStdString(transition_names[1]));
256 if (transition_names.size() < 3) {
257 transition_btn3->setText(QString(""));
259 transition_btn3->setText(QString::fromStdString(transition_names[2]));
263 void MainWindow::update_channel_name(Mixer::Output output)
265 if (output >= Mixer::OUTPUT_INPUT0) {
266 unsigned channel = output - Mixer::OUTPUT_INPUT0;
267 previews[channel]->label->setText(global_mixer->get_channel_name(output).c_str());
271 void MainWindow::transition_clicked(int transition_number)
273 global_mixer->transition_clicked(transition_number);
276 void MainWindow::channel_clicked(int channel_number)
278 if (current_wb_pick_display == channel_number) {
279 // The picking was already done from eventFilter(), since we don't get
280 // the mouse pointer here.
282 global_mixer->channel_clicked(channel_number);
286 void MainWindow::wb_button_clicked(int channel_number)
288 current_wb_pick_display = channel_number;
289 QApplication::setOverrideCursor(Qt::CrossCursor);
292 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
294 if (current_wb_pick_display != -1 &&
295 event->type() == QEvent::MouseButtonRelease &&
296 watched->isWidgetType()) {
297 QApplication::restoreOverrideCursor();
298 if (watched == previews[current_wb_pick_display]->display) {
299 const QMouseEvent *mouse_event = (QMouseEvent *)event;
300 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
302 // The user clicked on something else, give up.
303 // (The click goes through, which might not be ideal, but, yes.)
304 current_wb_pick_display = -1;
312 double srgb_to_linear(double x)
317 return pow((x + 0.055) / 1.055, 2.4);
323 void MainWindow::set_white_balance(int channel_number, int x, int y)
325 // Set the white balance to neutral for the grab. It's probably going to
326 // flicker a bit, but hopefully this display is not live anyway.
327 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
328 previews[channel_number]->display->updateGL();
329 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
331 double r = srgb_to_linear(qRed(reference_color) / 255.0);
332 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
333 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
334 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
335 previews[channel_number]->display->updateGL();