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<std::vector<std::string>>("std::vector<std::string>");
55 connect(ui->me_preview, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
58 void MainWindow::resizeEvent(QResizeEvent* event)
60 QMainWindow::resizeEvent(event);
62 // Ask for a relayout, but only after the event loop is done doing relayout
63 // on everything else.
64 QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
67 void MainWindow::mixer_created(Mixer *mixer)
70 unsigned num_previews = mixer->get_num_channels();
72 for (unsigned i = 0; i < num_previews; ++i) {
73 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
75 QWidget *preview = new QWidget(this);
76 Ui::Display *ui_display = new Ui::Display;
77 ui_display->setupUi(preview);
78 ui_display->label->setText(mixer->get_channel_name(output).c_str());
79 ui_display->display->set_output(output);
80 ui->preview_displays->insertWidget(previews.size(), preview, 1);
81 previews.push_back(ui_display);
84 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
86 // Hook up the keyboard key.
87 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
88 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
90 // Hook up the white balance button (irrelevant if invisible).
91 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
92 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
96 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_limiter_threshold_dbfs());
97 ui->limiter_threshold_db_display->setText(buf);
98 snprintf(buf, sizeof(buf), "%.1f dB", mixer->get_compressor_threshold_dbfs());
99 ui->compressor_threshold_db_display->setText(buf);
101 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
102 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
103 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
104 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
105 global_mixer->set_limiter_enabled(state == Qt::Checked);
107 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
108 global_mixer->set_compressor_enabled(state == Qt::Checked);
110 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
111 mixer->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6));
114 void MainWindow::cutoff_knob_changed(int value)
116 float octaves = value * 0.1f;
117 float cutoff_hz = 20.0 * pow(2.0, octaves);
118 global_mixer->set_locut_cutoff(cutoff_hz);
121 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
122 ui->locut_cutoff_display->setText(buf);
125 void MainWindow::limiter_threshold_knob_changed(int value)
127 float threshold_dbfs = value * 0.1f;
128 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
131 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
132 ui->limiter_threshold_db_display->setText(buf);
135 void MainWindow::compressor_threshold_knob_changed(int value)
137 float threshold_dbfs = value * 0.1f;
138 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
141 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
142 ui->compressor_threshold_db_display->setText(buf);
145 void MainWindow::reset_meters_button_clicked()
147 global_mixer->reset_meters();
148 ui->peak_display->setText("-inf");
149 ui->peak_display->setStyleSheet("");
152 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)
155 gettimeofday(&now, nullptr);
157 // The meters are somewhat inefficient to update. Only update them
158 // every 100 ms or so (we get updates every 5–20 ms).
159 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
160 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
161 if (last_update_age < 0.100) {
164 last_audio_level_callback = now;
166 post_to_main_thread([=]() {
167 ui->vu_meter->set_level(level_lufs);
168 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
171 snprintf(buf, sizeof(buf), "%.1f", peak_db);
172 ui->peak_display->setText(buf);
173 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
174 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
176 ui->peak_display->setStyleSheet("");
179 ui->gainstaging_knob->setValue(lrintf(auto_gain_staging_db * 10.0f));
180 snprintf(buf, sizeof(buf), "%+.1f dB", auto_gain_staging_db);
181 ui->gainstaging_db_display->setText(buf);
185 void MainWindow::relayout()
187 int height = ui->vertical_layout->geometry().height();
189 double remaining_height = height;
191 // Allocate the height; the most important part is to keep the main displays
192 // at 16:9 if at all possible.
193 double me_width = ui->me_preview->width();
194 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
196 // TODO: Scale the widths when we need to do this.
197 if (me_height / double(height) > 0.8) {
198 me_height = height * 0.8;
200 remaining_height -= me_height + ui->vertical_layout->spacing();
202 double audiostrip_height = ui->audiostrip->geometry().height();
203 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
205 // The previews will be constrained by the remaining height, and the width.
206 double preview_label_height = previews[0]->title_bar->geometry().height() + ui->preview_displays->spacing(); // Wrong spacing?
207 int preview_total_width = ui->preview_displays->geometry().width();
208 double preview_height = std::min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
209 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
211 ui->vertical_layout->setStretch(0, lrintf(me_height));
212 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
213 ui->vertical_layout->setStretch(2, std::max<int>(1, remaining_height)); // Spacer.
214 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
216 // Set the widths for the previews.
217 double preview_width = preview_height * 16.0 / 9.0;
218 double remaining_preview_width = preview_total_width;
220 for (unsigned i = 0; i < previews.size(); ++i) {
221 ui->preview_displays->setStretch(i, lrintf(preview_width));
222 remaining_preview_width -= preview_width + ui->preview_displays->spacing();
225 // The preview horizontal spacer.
226 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
229 void MainWindow::set_transition_names(vector<string> transition_names)
231 if (transition_names.size() < 1) {
232 transition_btn1->setText(QString(""));
234 transition_btn1->setText(QString::fromStdString(transition_names[0]));
236 if (transition_names.size() < 2) {
237 transition_btn2->setText(QString(""));
239 transition_btn2->setText(QString::fromStdString(transition_names[1]));
241 if (transition_names.size() < 3) {
242 transition_btn3->setText(QString(""));
244 transition_btn3->setText(QString::fromStdString(transition_names[2]));
248 void MainWindow::transition_clicked(int transition_number)
250 global_mixer->transition_clicked(transition_number);
253 void MainWindow::channel_clicked(int channel_number)
255 if (current_wb_pick_display == channel_number) {
256 // The picking was already done from eventFilter(), since we don't get
257 // the mouse pointer here.
259 global_mixer->channel_clicked(channel_number);
263 void MainWindow::wb_button_clicked(int channel_number)
265 current_wb_pick_display = channel_number;
266 QApplication::setOverrideCursor(Qt::CrossCursor);
269 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
271 if (current_wb_pick_display != -1 &&
272 event->type() == QEvent::MouseButtonRelease &&
273 watched->isWidgetType()) {
274 QApplication::restoreOverrideCursor();
275 if (watched == previews[current_wb_pick_display]->display) {
276 const QMouseEvent *mouse_event = (QMouseEvent *)event;
277 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
279 // The user clicked on something else, give up.
280 // (The click goes through, which might not be ideal, but, yes.)
281 current_wb_pick_display = -1;
289 double srgb_to_linear(double x)
294 return pow((x + 0.055) / 1.055, 2.4);
300 void MainWindow::set_white_balance(int channel_number, int x, int y)
302 // Set the white balance to neutral for the grab. It's probably going to
303 // flicker a bit, but hopefully this display is not live anyway.
304 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
305 previews[channel_number]->display->updateGL();
306 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
308 double r = srgb_to_linear(qRed(reference_color) / 255.0);
309 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
310 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
311 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
312 previews[channel_number]->display->updateGL();