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);
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::cutoff_knob_changed(int value)
122 float octaves = value * 0.1f;
123 float cutoff_hz = 20.0 * pow(2.0, octaves);
124 global_mixer->set_locut_cutoff(cutoff_hz);
127 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
128 ui->locut_cutoff_display->setText(buf);
131 void MainWindow::limiter_threshold_knob_changed(int value)
133 float threshold_dbfs = value * 0.1f;
134 global_mixer->set_limiter_threshold_dbfs(threshold_dbfs);
137 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
138 ui->limiter_threshold_db_display->setText(buf);
141 void MainWindow::compressor_threshold_knob_changed(int value)
143 float threshold_dbfs = value * 0.1f;
144 global_mixer->set_compressor_threshold_dbfs(threshold_dbfs);
147 snprintf(buf, sizeof(buf), "%.1f dB", threshold_dbfs);
148 ui->compressor_threshold_db_display->setText(buf);
151 void MainWindow::reset_meters_button_clicked()
153 global_mixer->reset_meters();
154 ui->peak_display->setText("-inf");
155 ui->peak_display->setStyleSheet("");
158 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)
161 gettimeofday(&now, nullptr);
163 // The meters are somewhat inefficient to update. Only update them
164 // every 100 ms or so (we get updates every 5–20 ms).
165 double last_update_age = now.tv_sec - last_audio_level_callback.tv_sec +
166 1e-6 * (now.tv_usec - last_audio_level_callback.tv_usec);
167 if (last_update_age < 0.100) {
170 last_audio_level_callback = now;
172 post_to_main_thread([=]() {
173 ui->vu_meter->set_level(level_lufs);
174 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
177 snprintf(buf, sizeof(buf), "%.1f", peak_db);
178 ui->peak_display->setText(buf);
179 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
180 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
182 ui->peak_display->setStyleSheet("");
185 ui->gainstaging_knob->setValue(lrintf(auto_gain_staging_db * 10.0f));
186 snprintf(buf, sizeof(buf), "%+.1f dB", auto_gain_staging_db);
187 ui->gainstaging_db_display->setText(buf);
191 void MainWindow::relayout()
193 int height = ui->vertical_layout->geometry().height();
195 double remaining_height = height;
197 // Allocate the height; the most important part is to keep the main displays
198 // at 16:9 if at all possible.
199 double me_width = ui->me_preview->width();
200 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
202 // TODO: Scale the widths when we need to do this.
203 if (me_height / double(height) > 0.8) {
204 me_height = height * 0.8;
206 remaining_height -= me_height + ui->vertical_layout->spacing();
208 double audiostrip_height = ui->audiostrip->geometry().height();
209 remaining_height -= audiostrip_height + ui->vertical_layout->spacing();
211 // The previews will be constrained by the remaining height, and the width.
212 double preview_label_height = previews[0]->title_bar->geometry().height() + ui->preview_displays->spacing(); // Wrong spacing?
213 int preview_total_width = ui->preview_displays->geometry().width();
214 double preview_height = std::min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
215 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
217 ui->vertical_layout->setStretch(0, lrintf(me_height));
218 ui->vertical_layout->setStretch(1, 0); // Don't stretch the audiostrip.
219 ui->vertical_layout->setStretch(2, std::max<int>(1, remaining_height)); // Spacer.
220 ui->vertical_layout->setStretch(3, lrintf(preview_height + preview_label_height));
222 // Set the widths for the previews.
223 double preview_width = preview_height * 16.0 / 9.0;
224 double remaining_preview_width = preview_total_width;
226 for (unsigned i = 0; i < previews.size(); ++i) {
227 ui->preview_displays->setStretch(i, lrintf(preview_width));
228 remaining_preview_width -= preview_width + ui->preview_displays->spacing();
231 // The preview horizontal spacer.
232 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
235 void MainWindow::set_transition_names(vector<string> transition_names)
237 if (transition_names.size() < 1) {
238 transition_btn1->setText(QString(""));
240 transition_btn1->setText(QString::fromStdString(transition_names[0]));
242 if (transition_names.size() < 2) {
243 transition_btn2->setText(QString(""));
245 transition_btn2->setText(QString::fromStdString(transition_names[1]));
247 if (transition_names.size() < 3) {
248 transition_btn3->setText(QString(""));
250 transition_btn3->setText(QString::fromStdString(transition_names[2]));
254 void MainWindow::update_channel_name(Mixer::Output output)
256 if (output >= Mixer::OUTPUT_INPUT0) {
257 unsigned channel = output - Mixer::OUTPUT_INPUT0;
258 previews[channel]->label->setText(global_mixer->get_channel_name(output).c_str());
262 void MainWindow::transition_clicked(int transition_number)
264 global_mixer->transition_clicked(transition_number);
267 void MainWindow::channel_clicked(int channel_number)
269 if (current_wb_pick_display == channel_number) {
270 // The picking was already done from eventFilter(), since we don't get
271 // the mouse pointer here.
273 global_mixer->channel_clicked(channel_number);
277 void MainWindow::wb_button_clicked(int channel_number)
279 current_wb_pick_display = channel_number;
280 QApplication::setOverrideCursor(Qt::CrossCursor);
283 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
285 if (current_wb_pick_display != -1 &&
286 event->type() == QEvent::MouseButtonRelease &&
287 watched->isWidgetType()) {
288 QApplication::restoreOverrideCursor();
289 if (watched == previews[current_wb_pick_display]->display) {
290 const QMouseEvent *mouse_event = (QMouseEvent *)event;
291 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
293 // The user clicked on something else, give up.
294 // (The click goes through, which might not be ideal, but, yes.)
295 current_wb_pick_display = -1;
303 double srgb_to_linear(double x)
308 return pow((x + 0.055) / 1.055, 2.4);
314 void MainWindow::set_white_balance(int channel_number, int x, int y)
316 // Set the white balance to neutral for the grab. It's probably going to
317 // flicker a bit, but hopefully this display is not live anyway.
318 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
319 previews[channel_number]->display->updateGL();
320 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
322 double r = srgb_to_linear(qRed(reference_color) / 255.0);
323 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
324 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
325 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
326 previews[channel_number]->display->updateGL();