1 #include "mainwindow.h"
11 #include <QInputDialog>
12 #include <QKeySequence>
15 #include <QPushButton>
16 #include <QResizeEvent>
21 #include "aboutdialog.h"
22 #include "disk_space_estimator.h"
25 #include "input_mapping_dialog.h"
28 #include "post_to_main_thread.h"
29 #include "ui_audio_miniview.h"
30 #include "ui_audio_expanded_view.h"
31 #include "ui_display.h"
32 #include "ui_mainwindow.h"
38 using namespace std::chrono;
39 using namespace std::placeholders;
41 Q_DECLARE_METATYPE(std::string);
42 Q_DECLARE_METATYPE(std::vector<std::string>);
44 MainWindow *global_mainwindow = nullptr;
48 void schedule_cut_signal(int ignored)
50 global_mixer->schedule_cut();
53 void quit_signal(int ignored)
55 global_mainwindow->close();
58 void slave_knob(QDial *master, QDial *slave)
60 QWidget::connect(master, &QDial::valueChanged, [slave](int value){
61 slave->blockSignals(true);
62 slave->setValue(value);
63 slave->blockSignals(false);
65 QWidget::connect(slave, &QDial::valueChanged, [master](int value){
66 master->setValue(value);
70 void slave_checkbox(QCheckBox *master, QCheckBox *slave)
72 QWidget::connect(master, &QCheckBox::stateChanged, [slave](int state){
73 slave->blockSignals(true);
74 slave->setCheckState(Qt::CheckState(state));
75 slave->blockSignals(false);
77 QWidget::connect(slave, &QCheckBox::stateChanged, [master](int state){
78 master->setCheckState(Qt::CheckState(state));
82 void slave_fader(NonLinearFader *master, NonLinearFader *slave)
84 QWidget::connect(master, &NonLinearFader::dbValueChanged, [slave](double value) {
85 slave->blockSignals(true);
86 slave->setDbValue(value);
87 slave->blockSignals(false);
89 QWidget::connect(slave, &NonLinearFader::dbValueChanged, [master](double value){
90 master->setDbValue(value);
94 constexpr unsigned DB_NO_FLAGS = 0x0;
95 constexpr unsigned DB_WITH_SIGN = 0x1;
96 constexpr unsigned DB_BARE = 0x2;
98 string format_db(double db, unsigned flags)
101 if (flags & DB_WITH_SIGN) {
104 snprintf(buf, sizeof(buf), "%+.1f", db);
106 } else if (db < 0.0) {
109 // Should never happen, really.
115 snprintf(buf, sizeof(buf), "%.1f", db);
117 } else if (db < 0.0) {
120 // Should never happen, really.
124 if (!(flags & DB_BARE)) {
132 MainWindow::MainWindow()
133 : ui(new Ui::MainWindow)
135 global_mainwindow = this;
138 global_disk_space_estimator = new DiskSpaceEstimator(bind(&MainWindow::report_disk_space, this, _1, _2));
139 disk_free_label = new QLabel(this);
140 disk_free_label->setStyleSheet("QLabel {padding-right: 5px;}");
141 ui->menuBar->setCornerWidget(disk_free_label);
143 ui->me_live->set_output(Mixer::OUTPUT_LIVE);
144 ui->me_preview->set_output(Mixer::OUTPUT_PREVIEW);
147 connect(ui->cut_action, &QAction::triggered, this, &MainWindow::cut_triggered);
148 connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
149 connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered);
150 connect(ui->input_mapping_action, &QAction::triggered, this, &MainWindow::input_mapping_triggered);
152 if (global_flags.x264_video_to_http) {
153 connect(ui->x264_bitrate_action, &QAction::triggered, this, &MainWindow::x264_bitrate_triggered);
155 ui->x264_bitrate_action->setEnabled(false);
158 // Hook up the transition buttons. (Keyboard shortcuts are set in set_transition_names().)
159 // TODO: Make them dynamic.
160 connect(ui->transition_btn1, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 0));
161 connect(ui->transition_btn2, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 1));
162 connect(ui->transition_btn3, &QPushButton::clicked, bind(&MainWindow::transition_clicked, this, 2));
165 transition_btn1 = ui->transition_btn1;
166 transition_btn2 = ui->transition_btn2;
167 transition_btn3 = ui->transition_btn3;
168 qRegisterMetaType<string>("std::string");
169 qRegisterMetaType<vector<string>>("std::vector<std::string>");
170 connect(ui->me_live, &GLWidget::transition_names_updated, this, &MainWindow::set_transition_names);
171 qRegisterMetaType<Mixer::Output>("Mixer::Output");
173 // Hook up the prev/next buttons on the audio views.
174 connect(ui->compact_prev_page, &QAbstractButton::clicked, bind(&QStackedWidget::setCurrentIndex, ui->audio_views, 1));
175 connect(ui->compact_next_page, &QAbstractButton::clicked, bind(&QStackedWidget::setCurrentIndex, ui->audio_views, 1));
176 connect(ui->full_prev_page, &QAbstractButton::clicked, bind(&QStackedWidget::setCurrentIndex, ui->audio_views, 0));
177 connect(ui->full_next_page, &QAbstractButton::clicked, bind(&QStackedWidget::setCurrentIndex, ui->audio_views, 0));
179 last_audio_level_callback = steady_clock::now() - seconds(1);
182 void MainWindow::resizeEvent(QResizeEvent* event)
184 QMainWindow::resizeEvent(event);
186 // Ask for a relayout, but only after the event loop is done doing relayout
187 // on everything else.
188 QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
191 void MainWindow::mixer_created(Mixer *mixer)
193 // Make the previews.
194 unsigned num_previews = mixer->get_num_channels();
196 for (unsigned i = 0; i < num_previews; ++i) {
197 Mixer::Output output = Mixer::Output(Mixer::OUTPUT_INPUT0 + i);
199 QWidget *preview = new QWidget(this);
200 Ui::Display *ui_display = new Ui::Display;
201 ui_display->setupUi(preview);
202 ui_display->label->setText(mixer->get_channel_name(output).c_str());
203 ui_display->display->set_output(output);
204 ui->preview_displays->insertWidget(previews.size(), preview, 1);
205 previews.push_back(ui_display);
207 // Hook up the click.
208 connect(ui_display->display, &GLWidget::clicked, bind(&MainWindow::channel_clicked, this, i));
210 // Let the theme update the text whenever the resolution or color changed.
211 connect(ui_display->display, &GLWidget::name_updated, this, &MainWindow::update_channel_name);
212 connect(ui_display->display, &GLWidget::color_updated, this, &MainWindow::update_channel_color);
214 // Hook up the keyboard key.
215 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
216 connect(shortcut, &QShortcut::activated, bind(&MainWindow::channel_clicked, this, i));
218 // Hook up the white balance button (irrelevant if invisible).
219 ui_display->wb_button->setVisible(mixer->get_supports_set_wb(output));
220 connect(ui_display->wb_button, &QPushButton::clicked, bind(&MainWindow::wb_button_clicked, this, i));
223 setup_audio_miniview();
224 setup_audio_expanded_view();
226 slave_knob(ui->locut_cutoff_knob, ui->locut_cutoff_knob_2);
227 slave_knob(ui->limiter_threshold_knob, ui->limiter_threshold_knob_2);
228 slave_knob(ui->makeup_gain_knob, ui->makeup_gain_knob_2);
229 slave_checkbox(ui->makeup_gain_auto_checkbox, ui->makeup_gain_auto_checkbox_2);
230 slave_checkbox(ui->limiter_enabled, ui->limiter_enabled_2);
232 // TODO: Fetch all of the values these for completeness,
233 // not just the enable knobs implied by flags.
235 // TODO: Reenable for simple audio.
236 ui->locut_enabled->setChecked(global_mixer->get_audio_mixer()->get_locut_enabled(0));
237 connect(ui->locut_enabled, &QCheckBox::stateChanged, [this](int state){
238 global_mixer->get_audio_mixer()->set_locut_enabled(0, state == Qt::Checked);
241 ui->locut_enabled->setVisible(false);
243 ui->gainstaging_knob->setValue(global_mixer->get_audio_mixer()->get_gain_staging_db());
244 ui->gainstaging_auto_checkbox->setChecked(global_mixer->get_audio_mixer()->get_gain_staging_auto());
245 ui->compressor_enabled->setChecked(global_mixer->get_audio_mixer()->get_compressor_enabled());
246 ui->limiter_enabled->setChecked(global_mixer->get_audio_mixer()->get_limiter_enabled());
247 ui->makeup_gain_auto_checkbox->setChecked(global_mixer->get_audio_mixer()->get_final_makeup_gain_auto());
249 QString limiter_threshold_label(
250 QString::fromStdString(format_db(mixer->get_audio_mixer()->get_limiter_threshold_dbfs(), DB_WITH_SIGN)));
251 ui->limiter_threshold_db_display->setText(limiter_threshold_label);
252 ui->limiter_threshold_db_display_2->setText(limiter_threshold_label);
253 ui->compressor_threshold_db_display->setText(
254 QString::fromStdString(format_db(mixer->get_audio_mixer()->get_compressor_threshold_dbfs(), DB_WITH_SIGN)));
256 connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
257 cutoff_knob_changed(ui->locut_cutoff_knob->value());
259 connect(ui->gainstaging_knob, &QAbstractSlider::valueChanged, this, &MainWindow::gain_staging_knob_changed);
260 connect(ui->gainstaging_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
261 global_mixer->get_audio_mixer()->set_gain_staging_auto(state == Qt::Checked);
263 connect(ui->makeup_gain_knob, &QAbstractSlider::valueChanged, this, &MainWindow::final_makeup_gain_knob_changed);
264 connect(ui->makeup_gain_auto_checkbox, &QCheckBox::stateChanged, [this](int state){
265 global_mixer->get_audio_mixer()->set_final_makeup_gain_auto(state == Qt::Checked);
268 connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
269 connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
270 connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
271 global_mixer->get_audio_mixer()->set_limiter_enabled(state == Qt::Checked);
273 connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this](int state){
274 global_mixer->get_audio_mixer()->set_compressor_enabled(state == Qt::Checked);
276 connect(ui->reset_meters_button, &QPushButton::clicked, this, &MainWindow::reset_meters_button_clicked);
277 mixer->get_audio_mixer()->set_audio_level_callback(bind(&MainWindow::audio_level_callback, this, _1, _2, _3, _4, _5, _6, _7, _8, _9));
279 struct sigaction act;
280 memset(&act, 0, sizeof(act));
281 act.sa_handler = schedule_cut_signal;
282 act.sa_flags = SA_RESTART;
283 sigaction(SIGHUP, &act, nullptr);
285 // Mostly for debugging. Don't override SIGINT, that's so evil if
286 // shutdown isn't instant.
287 memset(&act, 0, sizeof(act));
288 act.sa_handler = quit_signal;
289 act.sa_flags = SA_RESTART;
290 sigaction(SIGUSR1, &act, nullptr);
293 void MainWindow::setup_audio_miniview()
295 // Remove any existing channels.
296 for (QLayoutItem *item; (item = ui->faders->takeAt(0)) != nullptr; ) {
297 delete item->widget();
300 audio_miniviews.clear();
302 // Set up brand new ones from the input mapping.
303 InputMapping mapping = global_mixer->get_audio_mixer()->get_input_mapping();
304 audio_miniviews.resize(mapping.buses.size());
305 for (unsigned bus_index = 0; bus_index < mapping.buses.size(); ++bus_index) {
306 QWidget *channel = new QWidget(this);
307 Ui::AudioMiniView *ui_audio_miniview = new Ui::AudioMiniView;
308 ui_audio_miniview->setupUi(channel);
309 ui_audio_miniview->bus_desc_label->setFullText(
310 QString::fromStdString(mapping.buses[bus_index].name));
311 audio_miniviews[bus_index] = ui_audio_miniview;
312 // TODO: Set the fader position.
313 ui->faders->addWidget(channel);
315 connect(ui_audio_miniview->fader, &NonLinearFader::dbValueChanged,
316 bind(&MainWindow::mini_fader_changed, this, bus_index, _1));
320 void MainWindow::setup_audio_expanded_view()
322 // Remove any existing channels.
323 for (QLayoutItem *item; (item = ui->buses->takeAt(0)) != nullptr; ) {
324 delete item->widget();
327 audio_expanded_views.clear();
329 // Set up brand new ones from the input mapping.
330 InputMapping mapping = global_mixer->get_audio_mixer()->get_input_mapping();
331 audio_expanded_views.resize(mapping.buses.size());
332 for (unsigned bus_index = 0; bus_index < mapping.buses.size(); ++bus_index) {
333 QWidget *channel = new QWidget(this);
334 Ui::AudioExpandedView *ui_audio_expanded_view = new Ui::AudioExpandedView;
335 ui_audio_expanded_view->setupUi(channel);
336 ui_audio_expanded_view->bus_desc_label->setFullText(
337 QString::fromStdString(mapping.buses[bus_index].name));
338 audio_expanded_views[bus_index] = ui_audio_expanded_view;
339 // TODO: Set the fader position.
340 ui->buses->addWidget(channel);
342 ui_audio_expanded_view->locut_enabled->setChecked(global_mixer->get_audio_mixer()->get_locut_enabled(bus_index));
343 connect(ui->locut_enabled, &QCheckBox::stateChanged, [this, bus_index](int state){
344 global_mixer->get_audio_mixer()->set_locut_enabled(bus_index, state == Qt::Checked);
347 slave_fader(audio_miniviews[bus_index]->fader, ui_audio_expanded_view->fader);
351 void MainWindow::mixer_shutting_down()
353 ui->me_live->clean_context();
354 ui->me_preview->clean_context();
355 for (Ui::Display *display : previews) {
356 display->display->clean_context();
360 void MainWindow::cut_triggered()
362 global_mixer->schedule_cut();
365 void MainWindow::x264_bitrate_triggered()
368 int new_bitrate = QInputDialog::getInt(this, "Change x264 bitrate", "Choose new bitrate for x264 HTTP output (from 100–100,000 kbit/sec):", global_flags.x264_bitrate, /*min=*/100, /*max=*/100000, /*step=*/100, &ok);
369 if (ok && new_bitrate >= 100 && new_bitrate <= 100000) {
370 global_flags.x264_bitrate = new_bitrate;
371 global_mixer->change_x264_bitrate(new_bitrate);
375 void MainWindow::exit_triggered()
380 void MainWindow::about_triggered()
382 AboutDialog().exec();
385 void MainWindow::input_mapping_triggered()
387 if (InputMappingDialog().exec() == QDialog::Accepted) {
388 setup_audio_miniview();
389 setup_audio_expanded_view();
393 void MainWindow::gain_staging_knob_changed(int value)
395 ui->gainstaging_auto_checkbox->setCheckState(Qt::Unchecked);
397 float gain_db = value * 0.1f;
398 global_mixer->get_audio_mixer()->set_gain_staging_db(gain_db);
400 // The label will be updated by the audio level callback.
403 void MainWindow::final_makeup_gain_knob_changed(int value)
405 ui->makeup_gain_auto_checkbox->setCheckState(Qt::Unchecked);
407 float gain_db = value * 0.1f;
408 global_mixer->get_audio_mixer()->set_final_makeup_gain_db(gain_db);
410 // The label will be updated by the audio level callback.
413 void MainWindow::cutoff_knob_changed(int value)
415 float octaves = value * 0.1f;
416 float cutoff_hz = 20.0 * pow(2.0, octaves);
417 global_mixer->get_audio_mixer()->set_locut_cutoff(cutoff_hz);
420 snprintf(buf, sizeof(buf), "%ld Hz", lrintf(cutoff_hz));
421 ui->locut_cutoff_display->setText(buf);
422 ui->locut_cutoff_display_2->setText(buf);
425 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
428 if (estimated_seconds_left < 60.0) {
429 strcpy(time_str, "<font color=\"red\">Less than a minute</font>");
430 } else if (estimated_seconds_left < 1800.0) { // Less than half an hour: Xm Ys (red).
431 int s = lrintf(estimated_seconds_left);
434 snprintf(time_str, sizeof(time_str), "<font color=\"red\">%dm %ds</font>", m, s);
435 } else if (estimated_seconds_left < 3600.0) { // Less than an hour: Xm.
436 int m = lrintf(estimated_seconds_left / 60.0);
437 snprintf(time_str, sizeof(time_str), "%dm", m);
438 } else if (estimated_seconds_left < 36000.0) { // Less than ten hours: Xh Ym.
439 int m = lrintf(estimated_seconds_left / 60.0);
442 snprintf(time_str, sizeof(time_str), "%dh %dm", h, m);
443 } else { // More than ten hours: Xh.
444 int h = lrintf(estimated_seconds_left / 3600.0);
445 snprintf(time_str, sizeof(time_str), "%dh", h);
448 snprintf(buf, sizeof(buf), "Disk free: %'.0f MB (approx. %s)", free_bytes / 1048576.0, time_str);
450 std::string label = buf;
452 post_to_main_thread([this, label]{
453 disk_free_label->setText(QString::fromStdString(label));
454 ui->menuBar->setCornerWidget(disk_free_label); // Need to set this again for the sizing to get right.
458 void MainWindow::limiter_threshold_knob_changed(int value)
460 float threshold_dbfs = value * 0.1f;
461 global_mixer->get_audio_mixer()->set_limiter_threshold_dbfs(threshold_dbfs);
462 ui->limiter_threshold_db_display->setText(
463 QString::fromStdString(format_db(threshold_dbfs, DB_WITH_SIGN)));
464 ui->limiter_threshold_db_display_2->setText(
465 QString::fromStdString(format_db(threshold_dbfs, DB_WITH_SIGN)));
468 void MainWindow::compressor_threshold_knob_changed(int value)
470 float threshold_dbfs = value * 0.1f;
471 global_mixer->get_audio_mixer()->set_compressor_threshold_dbfs(threshold_dbfs);
472 ui->compressor_threshold_db_display->setText(
473 QString::fromStdString(format_db(threshold_dbfs, DB_WITH_SIGN)));
476 void MainWindow::mini_fader_changed(int bus, double volume_db)
478 QString label(QString::fromStdString(format_db(volume_db, DB_WITH_SIGN)));
479 audio_miniviews[bus]->fader_label->setText(label);
480 audio_expanded_views[bus]->fader_label->setText(label);
482 global_mixer->get_audio_mixer()->set_fader_volume(bus, volume_db);
485 void MainWindow::reset_meters_button_clicked()
487 global_mixer->get_audio_mixer()->reset_meters();
488 ui->peak_display->setText(QString::fromStdString(format_db(-HUGE_VAL, DB_WITH_SIGN | DB_BARE)));
489 ui->peak_display->setStyleSheet("");
492 void MainWindow::audio_level_callback(float level_lufs, float peak_db, vector<float> bus_level_lufs,
493 float global_level_lufs,
494 float range_low_lufs, float range_high_lufs,
495 float gain_staging_db, float final_makeup_gain_db,
498 steady_clock::time_point now = steady_clock::now();
500 // The meters are somewhat inefficient to update. Only update them
501 // every 100 ms or so (we get updates every 5–20 ms).
502 double last_update_age = duration<double>(now - last_audio_level_callback).count();
503 if (last_update_age < 0.100) {
506 last_audio_level_callback = now;
508 post_to_main_thread([=]() {
509 ui->vu_meter->set_level(level_lufs);
510 for (unsigned bus_index = 0; bus_index < bus_level_lufs.size(); ++bus_index) {
511 if (bus_index < audio_miniviews.size()) {
512 audio_miniviews[bus_index]->vu_meter_meter->set_level(
513 bus_level_lufs[bus_index]);
516 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
517 ui->correlation_meter->set_correlation(correlation);
519 ui->peak_display->setText(QString::fromStdString(format_db(peak_db, DB_BARE)));
520 if (peak_db > -0.1f) { // -0.1 dBFS is EBU peak limit.
521 ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
523 ui->peak_display->setStyleSheet("");
526 ui->gainstaging_knob->blockSignals(true);
527 ui->gainstaging_knob->setValue(lrintf(gain_staging_db * 10.0f));
528 ui->gainstaging_knob->blockSignals(false);
529 ui->gainstaging_db_display->setText(
530 QString::fromStdString(format_db(gain_staging_db, DB_WITH_SIGN)));
532 ui->makeup_gain_knob->blockSignals(true);
533 ui->makeup_gain_knob->setValue(lrintf(final_makeup_gain_db * 10.0f));
534 ui->makeup_gain_knob->blockSignals(false);
535 ui->makeup_gain_db_display->setText(
536 QString::fromStdString(format_db(final_makeup_gain_db, DB_WITH_SIGN)));
537 ui->makeup_gain_db_display_2->setText(
538 QString::fromStdString(format_db(final_makeup_gain_db, DB_WITH_SIGN)));
542 void MainWindow::relayout()
544 int height = ui->vertical_layout->geometry().height();
546 double remaining_height = height;
548 // Allocate the height; the most important part is to keep the main displays
549 // at 16:9 if at all possible.
550 double me_width = ui->me_preview->width();
551 double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height() + ui->preview_vertical_layout->spacing();
553 // TODO: Scale the widths when we need to do this.
554 if (me_height / double(height) > 0.8) {
555 me_height = height * 0.8;
557 remaining_height -= me_height + ui->vertical_layout->spacing();
559 // Space between the M/E displays and the audio strip.
560 remaining_height -= ui->vertical_layout->spacing();
562 // The label above the audio strip.
563 double compact_label_height = ui->compact_label->geometry().height() +
564 ui->compact_audio_layout->spacing();
565 remaining_height -= compact_label_height;
567 // The previews will be constrained by the remaining height, and the width.
568 double preview_label_height = previews[0]->title_bar->geometry().height() +
569 previews[0]->main_vertical_layout->spacing();
570 int preview_total_width = ui->preview_displays->geometry().width() - (previews.size() - 1) * ui->preview_displays->spacing();
571 double preview_height = min(remaining_height - preview_label_height, (preview_total_width / double(previews.size())) * 9.0 / 16.0);
572 remaining_height -= preview_height + preview_label_height + ui->vertical_layout->spacing();
574 ui->vertical_layout->setStretch(0, lrintf(me_height));
575 ui->vertical_layout->setStretch(1,
576 lrintf(compact_label_height) +
577 lrintf(remaining_height) +
578 lrintf(preview_height + preview_label_height)); // Audio strip and previews together.
580 ui->compact_audio_layout->setStretch(0, lrintf(compact_label_height));
581 ui->compact_audio_layout->setStretch(1, lrintf(remaining_height)); // Audio strip.
582 ui->compact_audio_layout->setStretch(2, lrintf(preview_height + preview_label_height));
584 // Set the widths for the previews.
585 double preview_width = preview_height * 16.0 / 9.0;
586 for (unsigned i = 0; i < previews.size(); ++i) {
587 ui->preview_displays->setStretch(i, lrintf(preview_width));
590 // The preview horizontal spacer.
591 double remaining_preview_width = preview_total_width - previews.size() * preview_width;
592 ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
595 void MainWindow::set_transition_names(vector<string> transition_names)
597 if (transition_names.size() < 1 || transition_names[0].empty()) {
598 transition_btn1->setText(QString(""));
600 transition_btn1->setText(QString::fromStdString(transition_names[0] + " (J)"));
601 ui->transition_btn1->setShortcut(QKeySequence("J"));
603 if (transition_names.size() < 2 || transition_names[1].empty()) {
604 transition_btn2->setText(QString(""));
606 transition_btn2->setText(QString::fromStdString(transition_names[1] + " (K)"));
607 ui->transition_btn2->setShortcut(QKeySequence("K"));
609 if (transition_names.size() < 3 || transition_names[2].empty()) {
610 transition_btn3->setText(QString(""));
612 transition_btn3->setText(QString::fromStdString(transition_names[2] + " (L)"));
613 ui->transition_btn3->setShortcut(QKeySequence("L"));
617 void MainWindow::update_channel_name(Mixer::Output output, const string &name)
619 if (output >= Mixer::OUTPUT_INPUT0) {
620 unsigned channel = output - Mixer::OUTPUT_INPUT0;
621 previews[channel]->label->setText(name.c_str());
625 void MainWindow::update_channel_color(Mixer::Output output, const string &color)
627 if (output >= Mixer::OUTPUT_INPUT0) {
628 unsigned channel = output - Mixer::OUTPUT_INPUT0;
629 previews[channel]->frame->setStyleSheet(QString::fromStdString("background-color:" + color));
633 void MainWindow::transition_clicked(int transition_number)
635 global_mixer->transition_clicked(transition_number);
638 void MainWindow::channel_clicked(int channel_number)
640 if (current_wb_pick_display == channel_number) {
641 // The picking was already done from eventFilter(), since we don't get
642 // the mouse pointer here.
644 global_mixer->channel_clicked(channel_number);
648 void MainWindow::wb_button_clicked(int channel_number)
650 current_wb_pick_display = channel_number;
651 QApplication::setOverrideCursor(Qt::CrossCursor);
654 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
656 if (current_wb_pick_display != -1 &&
657 event->type() == QEvent::MouseButtonRelease &&
658 watched->isWidgetType()) {
659 QApplication::restoreOverrideCursor();
660 if (watched == previews[current_wb_pick_display]->display) {
661 const QMouseEvent *mouse_event = (QMouseEvent *)event;
662 set_white_balance(current_wb_pick_display, mouse_event->x(), mouse_event->y());
664 // The user clicked on something else, give up.
665 // (The click goes through, which might not be ideal, but, yes.)
666 current_wb_pick_display = -1;
674 double srgb_to_linear(double x)
679 return pow((x + 0.055) / 1.055, 2.4);
685 void MainWindow::set_white_balance(int channel_number, int x, int y)
687 // Set the white balance to neutral for the grab. It's probably going to
688 // flicker a bit, but hopefully this display is not live anyway.
689 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, 0.5, 0.5, 0.5);
690 previews[channel_number]->display->updateGL();
691 QRgb reference_color = previews[channel_number]->display->grabFrameBuffer().pixel(x, y);
693 double r = srgb_to_linear(qRed(reference_color) / 255.0);
694 double g = srgb_to_linear(qGreen(reference_color) / 255.0);
695 double b = srgb_to_linear(qBlue(reference_color) / 255.0);
696 global_mixer->set_wb(Mixer::OUTPUT_INPUT0 + channel_number, r, g, b);
697 previews[channel_number]->display->updateGL();