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 connect(ui->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
113 global_mixer->set_gainstaging_auto(state == Qt::Checked);
116 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
117 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
118 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
119 global_mixer->set_limiter_enabled(state == Qt::Checked);
121 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
122 global_mixer->set_compressor_enabled(state == Qt::Checked);
124 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
125 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6));
128 void MainWindow::mixer_shutting_down()
130 ui->me_live->clean_context();
131 ui->me_preview->clean_context();
132 for (Ui::Display *display : previews) {
133 display->display->clean_context();
137 void MainWindow::cut_triggered()
139 global_mixer->schedule_cut();
142 void MainWindow::exit_triggered()
147 void MainWindow::cutoff_knob_changed(int value)
149 float octaves = value * 0.1f;
150 float cutoff_hz = 20.0 * pow(2.0, octaves);
151 global_mixer->set_locut_cutoff(cutoff_hz);
154 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
155 ui->locut_cutoff_display->setText(buf);
158 void MainWindow::limiter_threshold_knob_changed(int value)
160 float threshold_dbfs = value * 0.1f;
161 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
164 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
165 ui->limiter_threshold_db_display->setText(buf);
168 void MainWindow::compressor_threshold_knob_changed(int value)
170 float threshold_dbfs = value * 0.1f;
171 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
174 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
175 ui->compressor_threshold_db_display->setText(buf);
178 void MainWindow::reset_meters_button_clicked()
180 global_mixer->reset_meters();
181 ui->peak_display->setText("-inf");
182 ui->peak_display->setStyleSheet("");
185 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)
188 gettimeofday(&now, nullptr);
190 // The meters are somewhat inefficient to update. Only update them
191 // every 100 ms or so (we get updates every 5–20 ms).
192 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
193 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
194 if (last_update_age < 0.100) {
197 last_audio_level_callback = now;
199 post_to_main_thread([=]() {
200 ui->vu_meter->set_level(level_lufs);
201 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
204 snprintf(buf, sizeof(buf), "%.1f", peak_db);
205 ui->peak_display->setText(buf);
206 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
207 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
209 ui->peak_display->setStyleSheet("");
212 ui->gainstaging_knob->setValue(lrintf(auto_gain_staging_db * 10.0f));
213 snprintf(buf, sizeof(buf), "%+.1f dB", auto_gain_staging_db);
214 ui->gainstaging_db_display->setText(buf);
218 void MainWindow::relayout()
220 int height = ui->vertical_layout->geometry().height();
222 double remaining_height = height;
224 // Allocate the height; the most important part is to keep the main displays
225 // at 16:9 if at all possible.
226 double me_width = ui->me_preview->width();
227 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
229 // TODO: Scale the widths when we need to do this.
230 if (me_height / double(height) > 0.8) {
231 me_height = height * 0.8;
233 remaining_height -= me_height + ui->vertical_layout->spacing();
235 double audiostrip_height = ui->audiostrip->geometry().height();
236 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
238 // The previews will be constrained by the remaining height, and the width.
239 double preview_label_height = previews[0]->title_bar->geometry().height() + ui->preview_displays->spacing(); // Wrong spacing?
240 int preview_total_width = ui->preview_displays->geometry().width();
241 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
242 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
244 ui->vertical_layout->setStretch(0, lrintf(me_height));
245 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
246 ui->vertical_layout->setStretch(2, max<int>(1, remaining_height)); // Spacer.
247 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
249 // Set the widths for the previews.
250 double preview_width = preview_height * 16.0 / 9.0;
251 double remaining_preview_width = preview_total_width;
253 for (unsigned i = 0; i < previews.size(); ++i) {
254 ui->preview_displays->setStretch(i, lrintf(preview_width));
255 remaining_preview_width -= preview_width + ui->preview_displays->spacing();
258 // The preview horizontal spacer.
259 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
262 void MainWindow::set_transition_names(vector<string> transition_names)
264 if (transition_names.size() < 1) {
265 transition_btn1->setText(QString(""));
267 transition_btn1->setText(QString::fromStdString(transition_names[0]));
269 if (transition_names.size() < 2) {
270 transition_btn2->setText(QString(""));
272 transition_btn2->setText(QString::fromStdString(transition_names[1]));
274 if (transition_names.size() < 3) {
275 transition_btn3->setText(QString(""));
277 transition_btn3->setText(QString::fromStdString(transition_names[2]));
281 void MainWindow::update_channel_name(Mixer::Output output)
283 if (output >= Mixer::OUTPUT_INPUT0) {
284 unsigned channel = output - Mixer::OUTPUT_INPUT0;
285 previews[channel]->label->setText(global_mixer->get_channel_name(output).c_str());
289 void MainWindow::transition_clicked(int transition_number)
291 global_mixer->transition_clicked(transition_number);
294 void MainWindow::channel_clicked(int channel_number)
296 if (current_wb_pick_display == channel_number) {
297 // The picking was already done from eventFilter(), since we don't get
298 // the mouse pointer here.
300 global_mixer->channel_clicked(channel_number);
304 void MainWindow::wb_button_clicked(int channel_number)
306 current_wb_pick_display = channel_number;
307 QApplication::setOverrideCursor(Qt::CrossCursor);
310 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
312 if (current_wb_pick_display != -1 &&
313 event->type() == QEvent::MouseButtonRelease &&
314 watched->isWidgetType()) {
315 QApplication::restoreOverrideCursor();
316 if (watched == previews[current_wb_pick_display]->display) {
317 const QMouseEvent *mouse_event = (QMouseEvent *)event;
318 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
320 // The user clicked on something else, give up.
321 // (The click goes through, which might not be ideal, but, yes.)
322 current_wb_pick_display = -1;
330 double srgb_to_linear(double x)
335 return pow((x + 0.055) / 1.055, 2.4);
341 void MainWindow::set_white_balance(int channel_number, int x, int y)
343 // Set the white balance to neutral for the grab. It's probably going to
344 // flicker a bit, but hopefully this display is not live anyway.
345 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
346 previews[channel_number]->display->updateGL();
347 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
349 double r = srgb_to_linear(qRed(reference_color) / 255.0);
350 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
351 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
352 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
353 previews[channel_number]->display->updateGL();