git.sesse.net Git - nageru/blob - futatabi/mainwindow.cpp

   1 #include "mainwindow.h"
   2
   3 #include "clip_list.h"
   4 #include "export.h"
   5 #include "flags.h"
   6 #include "frame_on_disk.h"
   7 #include "player.h"
   8 #include "shared/aboutdialog.h"
   9 #include "shared/disk_space_estimator.h"
  10 #include "shared/post_to_main_thread.h"
  11 #include "shared/timebase.h"
  12 #include "ui_mainwindow.h"
  13
  14 #include <QDesktopServices>
  15 #include <QFileDialog>
  16 #include <QMessageBox>
  17 #include <QMouseEvent>
  18 #include <QNetworkReply>
  19 #include <QShortcut>
  20 #include <QTimer>
  21 #include <QWheelEvent>
  22 #include <future>
  23 #include <sqlite3.h>
  24 #include <string>
  25 #include <vector>
  26
  27 using namespace std;
  28 using namespace std::placeholders;
  29
  30 MainWindow *global_mainwindow = nullptr;
  31 static ClipList *cliplist_clips;
  32 static PlayList *playlist_clips;
  33
  34 extern int64_t current_pts;
  35
  36 MainWindow::MainWindow()
  37         : ui(new Ui::MainWindow),
  38           db(global_flags.working_directory + "/futatabi.db")
  39 {
  40         global_mainwindow = this;
  41         ui->setupUi(this);
  42
  43         // Load settings from database.
  44         SettingsProto settings = db.get_settings();
  45         if (!global_flags.interpolation_quality_set) {
  46                 if (settings.interpolation_quality() != 0) {
  47                         global_flags.interpolation_quality = settings.interpolation_quality() - 1;
  48                 }
  49         }
  50         if (!global_flags.cue_point_padding_set) {
  51                 global_flags.cue_point_padding_seconds = settings.cue_point_padding_seconds();  // Default 0 is fine.
  52         }
  53         if (global_flags.interpolation_quality == 0) {
  54                 // Allocate something just for simplicity; we won't be using it
  55                 // unless the user changes runtime, in which case 1 is fine.
  56                 flow_initialized_interpolation_quality = 1;
  57         } else {
  58                 flow_initialized_interpolation_quality = global_flags.interpolation_quality;
  59         }
  60         save_settings();
  61
  62         // The menus.
  63         connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
  64         connect(ui->export_cliplist_clip_multitrack_action, &QAction::triggered, this, &MainWindow::export_cliplist_clip_multitrack_triggered);
  65         connect(ui->export_playlist_clip_interpolated_action, &QAction::triggered, this, &MainWindow::export_playlist_clip_interpolated_triggered);
  66         connect(ui->manual_action, &QAction::triggered, this, &MainWindow::manual_triggered);
  67         connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered);
  68         connect(ui->undo_action, &QAction::triggered, this, &MainWindow::undo_triggered);
  69         connect(ui->redo_action, &QAction::triggered, this, &MainWindow::redo_triggered);
  70         ui->undo_action->setEnabled(false);
  71         ui->redo_action->setEnabled(false);
  72
  73         // The quality group.
  74         QActionGroup *quality_group = new QActionGroup(ui->interpolation_menu);
  75         quality_group->addAction(ui->quality_0_action);
  76         quality_group->addAction(ui->quality_1_action);
  77         quality_group->addAction(ui->quality_2_action);
  78         quality_group->addAction(ui->quality_3_action);
  79         quality_group->addAction(ui->quality_4_action);
  80         if (global_flags.interpolation_quality == 0) {
  81                 ui->quality_0_action->setChecked(true);
  82         } else if (global_flags.interpolation_quality == 1) {
  83                 ui->quality_1_action->setChecked(true);
  84         } else if (global_flags.interpolation_quality == 2) {
  85                 ui->quality_2_action->setChecked(true);
  86         } else if (global_flags.interpolation_quality == 3) {
  87                 ui->quality_3_action->setChecked(true);
  88         } else if (global_flags.interpolation_quality == 4) {
  89                 ui->quality_4_action->setChecked(true);
  90         } else {
  91                 assert(false);
  92         }
  93         connect(ui->quality_0_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 0, _1));
  94         connect(ui->quality_1_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 1, _1));
  95         connect(ui->quality_2_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 2, _1));
  96         connect(ui->quality_3_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 3, _1));
  97         connect(ui->quality_4_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 4, _1));
  98
  99         // The cue point padding group.
 100         QActionGroup *padding_group = new QActionGroup(ui->interpolation_menu);
 101         padding_group->addAction(ui->padding_0_action);
 102         padding_group->addAction(ui->padding_1_action);
 103         padding_group->addAction(ui->padding_2_action);
 104         padding_group->addAction(ui->padding_5_action);
 105         if (global_flags.cue_point_padding_seconds <= 1e-3) {
 106                 ui->padding_0_action->setChecked(true);
 107         } else if (fabs(global_flags.cue_point_padding_seconds - 1.0) < 1e-3) {
 108                 ui->padding_1_action->setChecked(true);
 109         } else if (fabs(global_flags.cue_point_padding_seconds - 2.0) < 1e-3) {
 110                 ui->padding_2_action->setChecked(true);
 111         } else if (fabs(global_flags.cue_point_padding_seconds - 5.0) < 1e-3) {
 112                 ui->padding_5_action->setChecked(true);
 113         } else {
 114                 // Nothing to check, which is fine.
 115         }
 116         connect(ui->padding_0_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 0.0, _1));
 117         connect(ui->padding_1_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 1.0, _1));
 118         connect(ui->padding_2_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 2.0, _1));
 119         connect(ui->padding_5_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 5.0, _1));
 120
 121         global_disk_space_estimator = new DiskSpaceEstimator(bind(&MainWindow::report_disk_space, this, _1, _2));
 122         disk_free_label = new QLabel(this);
 123         disk_free_label->setStyleSheet("QLabel {padding-right: 5px;}");
 124         ui->menuBar->setCornerWidget(disk_free_label);
 125
 126         StateProto state = db.get_state();
 127         undo_stack.push_back(state);  // The undo stack always has the current state on top.
 128
 129         cliplist_clips = new ClipList(state.clip_list());
 130         ui->clip_list->setModel(cliplist_clips);
 131         connect(cliplist_clips, &ClipList::any_content_changed, this, &MainWindow::content_changed);
 132
 133         playlist_clips = new PlayList(state.play_list());
 134         ui->playlist->setModel(playlist_clips);
 135         connect(playlist_clips, &PlayList::any_content_changed, this, &MainWindow::content_changed);
 136
 137         // For un-highlighting when we lose focus.
 138         ui->clip_list->installEventFilter(this);
 139
 140         // For scrubbing in the pts columns.
 141         ui->clip_list->viewport()->installEventFilter(this);
 142         ui->playlist->viewport()->installEventFilter(this);
 143
 144         QShortcut *cue_in = new QShortcut(QKeySequence(Qt::Key_A), this);
 145         connect(cue_in, &QShortcut::activated, ui->cue_in_btn, &QPushButton::click);
 146         connect(ui->cue_in_btn, &QPushButton::clicked, this, &MainWindow::cue_in_clicked);
 147
 148         QShortcut *cue_out = new QShortcut(QKeySequence(Qt::Key_S), this);
 149         connect(cue_out, &QShortcut::activated, ui->cue_out_btn, &QPushButton::click);
 150         connect(ui->cue_out_btn, &QPushButton::clicked, this, &MainWindow::cue_out_clicked);
 151
 152         QShortcut *queue = new QShortcut(QKeySequence(Qt::Key_Q), this);
 153         connect(queue, &QShortcut::activated, ui->queue_btn, &QPushButton::click);
 154         connect(ui->queue_btn, &QPushButton::clicked, this, &MainWindow::queue_clicked);
 155
 156         QShortcut *preview = new QShortcut(QKeySequence(Qt::Key_W), this);
 157         connect(preview, &QShortcut::activated, ui->preview_btn, &QPushButton::click);
 158         connect(ui->preview_btn, &QPushButton::clicked, this, &MainWindow::preview_clicked);
 159
 160         QShortcut *play = new QShortcut(QKeySequence(Qt::Key_Space), this);
 161         connect(play, &QShortcut::activated, ui->play_btn, &QPushButton::click);
 162         connect(ui->play_btn, &QPushButton::clicked, this, &MainWindow::play_clicked);
 163
 164         connect(ui->stop_btn, &QPushButton::clicked, this, &MainWindow::stop_clicked);
 165         ui->stop_btn->setEnabled(false);
 166
 167         connect(ui->playlist_duplicate_btn, &QPushButton::clicked, this, &MainWindow::playlist_duplicate);
 168
 169         connect(ui->playlist_remove_btn, &QPushButton::clicked, this, &MainWindow::playlist_remove);
 170         QShortcut *delete_key = new QShortcut(QKeySequence(Qt::Key_Delete), ui->playlist);
 171         connect(delete_key, &QShortcut::activated, [this] {
 172                 if (ui->playlist->hasFocus()) {
 173                         playlist_remove();
 174                 }
 175         });
 176
 177         // TODO: support drag-and-drop.
 178         connect(ui->playlist_move_up_btn, &QPushButton::clicked, [this] { playlist_move(-1); });
 179         connect(ui->playlist_move_down_btn, &QPushButton::clicked, [this] { playlist_move(1); });
 180
 181         connect(ui->playlist->selectionModel(), &QItemSelectionModel::selectionChanged,
 182                 this, &MainWindow::playlist_selection_changed);
 183         playlist_selection_changed();  // First time set-up.
 184
 185         preview_player.reset(new Player(ui->preview_display, Player::NO_STREAM_OUTPUT));
 186         live_player.reset(new Player(ui->live_display, Player::HTTPD_STREAM_OUTPUT));
 187         live_player->set_done_callback([this] {
 188                 post_to_main_thread([this] {
 189                         live_player_clip_done();
 190                 });
 191         });
 192         live_player->set_progress_callback([this](const map<size_t, double> &progress) {
 193                 post_to_main_thread([this, progress] {
 194                         live_player_clip_progress(progress);
 195                 });
 196         });
 197         set_output_status("paused");
 198
 199         defer_timeout = new QTimer(this);
 200         defer_timeout->setSingleShot(true);
 201         connect(defer_timeout, &QTimer::timeout, this, &MainWindow::defer_timer_expired);
 202         ui->undo_action->setEnabled(true);
 203
 204         connect(ui->clip_list->selectionModel(), &QItemSelectionModel::currentChanged,
 205                 this, &MainWindow::clip_list_selection_changed);
 206
 207         // Find out how many cameras we have in the existing frames;
 208         // if none, we start with two cameras.
 209         num_cameras = 2;
 210         {
 211                 lock_guard<mutex> lock(frame_mu);
 212                 for (size_t stream_idx = 2; stream_idx < MAX_STREAMS; ++stream_idx) {
 213                         if (!frames[stream_idx].empty()) {
 214                                 num_cameras = stream_idx + 1;
 215                         }
 216                 }
 217         }
 218         change_num_cameras();
 219
 220         if (!global_flags.tally_url.empty()) {
 221                 start_tally();
 222         }
 223 }
 224
 225 void MainWindow::change_num_cameras()
 226 {
 227         assert(num_cameras >= displays.size());  // We only add, never remove.
 228
 229         // Make new display rows.
 230         unsigned display_rows = (num_cameras + 1) / 2;
 231         ui->video_displays->setStretch(1, display_rows);
 232         for (unsigned i = displays.size(); i < num_cameras; ++i) {
 233                 QFrame *frame = new QFrame(this);
 234                 frame->setAutoFillBackground(true);
 235
 236                 QLayout *layout = new QGridLayout(frame);
 237                 frame->setLayout(layout);
 238                 layout->setContentsMargins(3, 3, 3, 3);
 239
 240                 JPEGFrameView *display = new JPEGFrameView(frame);
 241                 display->setAutoFillBackground(true);
 242                 layout->addWidget(display);
 243
 244                 ui->input_displays->addWidget(frame, i / 2, i % 2);
 245                 display->set_overlay(to_string(i + 1));
 246
 247                 QPushButton *preview_btn = new QPushButton(this);
 248                 preview_btn->setMaximumSize(20, 17);
 249                 preview_btn->setText(QString::fromStdString(to_string(i + 1)));
 250                 ui->preview_layout->addWidget(preview_btn);
 251
 252                 displays.emplace_back(FrameAndDisplay{ frame, display, preview_btn });
 253
 254                 connect(display, &JPEGFrameView::clicked, preview_btn, &QPushButton::click);
 255                 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
 256                 connect(shortcut, &QShortcut::activated, preview_btn, &QPushButton::click);
 257
 258                 connect(preview_btn, &QPushButton::clicked, [this, i] { preview_angle_clicked(i); });
 259         }
 260
 261         cliplist_clips->change_num_cameras(num_cameras);
 262         playlist_clips->change_num_cameras(num_cameras);
 263
 264         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 265 }
 266
 267 MainWindow::~MainWindow()
 268 {
 269         // Empty so that we can forward-declare Player in the .h file.
 270 }
 271
 272 void MainWindow::cue_in_clicked()
 273 {
 274         if (!cliplist_clips->empty() && cliplist_clips->back()->pts_out < 0) {
 275                 cliplist_clips->mutable_back()->pts_in = current_pts;
 276                 return;
 277         }
 278         Clip clip;
 279         clip.pts_in = max<int64_t>(current_pts - lrint(global_flags.cue_point_padding_seconds * TIMEBASE), 0);
 280         cliplist_clips->add_clip(clip);
 281         playlist_selection_changed();
 282         ui->clip_list->scrollToBottom();
 283 }
 284
 285 void MainWindow::cue_out_clicked()
 286 {
 287         if (!cliplist_clips->empty()) {
 288                 cliplist_clips->mutable_back()->pts_out = current_pts + lrint(global_flags.cue_point_padding_seconds * TIMEBASE);
 289                 // TODO: select the row in the clip list?
 290         }
 291 }
 292
 293 void MainWindow::queue_clicked()
 294 {
 295         if (cliplist_clips->empty()) {
 296                 return;
 297         }
 298
 299         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 300         if (!selected->hasSelection()) {
 301                 Clip clip = *cliplist_clips->back();
 302                 clip.stream_idx = 0;
 303                 if (clip.pts_out != -1) {
 304                         playlist_clips->add_clip(clip);
 305                         playlist_selection_changed();
 306                         ui->playlist->scrollToBottom();
 307                 }
 308                 return;
 309         }
 310
 311         QModelIndex index = selected->currentIndex();
 312         Clip clip = *cliplist_clips->clip(index.row());
 313         if (cliplist_clips->is_camera_column(index.column())) {
 314                 clip.stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 315         } else {
 316                 clip.stream_idx = ui->preview_display->get_stream_idx();
 317         }
 318
 319         if (clip.pts_out != -1) {
 320                 playlist_clips->add_clip(clip);
 321                 playlist_selection_changed();
 322                 ui->playlist->scrollToBottom();
 323                 if (!ui->playlist->selectionModel()->hasSelection()) {
 324                         // TODO: Figure out why this doesn't always seem to actually select the row.
 325                         QModelIndex bottom = playlist_clips->index(playlist_clips->size() - 1, 0);
 326                         ui->playlist->setCurrentIndex(bottom);
 327                 }
 328         }
 329 }
 330
 331 void MainWindow::preview_clicked()
 332 {
 333         if (ui->playlist->hasFocus()) {
 334                 // Allow the playlist as preview iff it has focus and something is selected.
 335                 QItemSelectionModel *selected = ui->playlist->selectionModel();
 336                 if (selected->hasSelection()) {
 337                         QModelIndex index = selected->currentIndex();
 338                         const Clip &clip = *playlist_clips->clip(index.row());
 339                         preview_player->play(clip);
 340                         return;
 341                 }
 342         }
 343
 344         if (cliplist_clips->empty())
 345                 return;
 346
 347         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 348         if (!selected->hasSelection()) {
 349                 preview_player->play(*cliplist_clips->back());
 350                 return;
 351         }
 352
 353         QModelIndex index = selected->currentIndex();
 354         Clip clip = *cliplist_clips->clip(index.row());
 355         if (cliplist_clips->is_camera_column(index.column())) {
 356                 clip.stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 357         } else {
 358                 clip.stream_idx = ui->preview_display->get_stream_idx();
 359         }
 360         preview_player->play(clip);
 361 }
 362
 363 void MainWindow::preview_angle_clicked(unsigned stream_idx)
 364 {
 365         preview_player->override_angle(stream_idx);
 366
 367         // Change the selection if we were previewing a clip from the clip list.
 368         // (The only other thing we could be showing is a pts scrub, and if so,
 369         // that would be selected.)
 370         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 371         if (selected->hasSelection()) {
 372                 QModelIndex cell = selected->selectedIndexes()[0];
 373                 int column = int(ClipList::Column::CAMERA_1) + stream_idx;
 374                 selected->setCurrentIndex(cell.sibling(cell.row(), column), QItemSelectionModel::ClearAndSelect);
 375         }
 376 }
 377
 378 void MainWindow::playlist_duplicate()
 379 {
 380         QItemSelectionModel *selected = ui->playlist->selectionModel();
 381         if (!selected->hasSelection()) {
 382                 // Should have been grayed out, but OK.
 383                 return;
 384         }
 385         QModelIndexList rows = selected->selectedRows();
 386         int first = rows.front().row(), last = rows.back().row();
 387         playlist_clips->duplicate_clips(first, last);
 388         playlist_selection_changed();
 389 }
 390
 391 void MainWindow::playlist_remove()
 392 {
 393         QItemSelectionModel *selected = ui->playlist->selectionModel();
 394         if (!selected->hasSelection()) {
 395                 // Should have been grayed out, but OK.
 396                 return;
 397         }
 398         QModelIndexList rows = selected->selectedRows();
 399         int first = rows.front().row(), last = rows.back().row();
 400         playlist_clips->erase_clips(first, last);
 401
 402         // TODO: select the next one in the list?
 403
 404         playlist_selection_changed();
 405 }
 406
 407 void MainWindow::playlist_move(int delta)
 408 {
 409         QItemSelectionModel *selected = ui->playlist->selectionModel();
 410         if (!selected->hasSelection()) {
 411                 // Should have been grayed out, but OK.
 412                 return;
 413         }
 414
 415         QModelIndexList rows = selected->selectedRows();
 416         int first = rows.front().row(), last = rows.back().row();
 417         if ((delta == -1 && first == 0) ||
 418             (delta == 1 && size_t(last) == playlist_clips->size() - 1)) {
 419                 // Should have been grayed out, but OK.
 420                 return;
 421         }
 422
 423         playlist_clips->move_clips(first, last, delta);
 424         playlist_selection_changed();
 425 }
 426
 427 void MainWindow::defer_timer_expired()
 428 {
 429         state_changed(deferred_state);
 430 }
 431
 432 void MainWindow::content_changed()
 433 {
 434         if (defer_timeout->isActive() &&
 435             (!currently_deferring_model_changes || deferred_change_id != current_change_id)) {
 436                 // There's some deferred event waiting, but this event is unrelated.
 437                 // So it's time to short-circuit that timer and do the work it wanted to do.
 438                 defer_timeout->stop();
 439                 state_changed(deferred_state);
 440         }
 441         StateProto state;
 442         *state.mutable_clip_list() = cliplist_clips->serialize();
 443         *state.mutable_play_list() = playlist_clips->serialize();
 444         if (currently_deferring_model_changes) {
 445                 deferred_change_id = current_change_id;
 446                 deferred_state = std::move(state);
 447                 defer_timeout->start(200);
 448                 return;
 449         }
 450         state_changed(state);
 451 }
 452
 453 void MainWindow::state_changed(const StateProto &state)
 454 {
 455         db.store_state(state);
 456
 457         redo_stack.clear();
 458         ui->redo_action->setEnabled(false);
 459
 460         undo_stack.push_back(state);
 461         ui->undo_action->setEnabled(undo_stack.size() > 1);
 462
 463         // Make sure it doesn't grow without bounds.
 464         while (undo_stack.size() >= 100) {
 465                 undo_stack.pop_front();
 466         }
 467 }
 468
 469 void MainWindow::save_settings()
 470 {
 471         SettingsProto settings;
 472         settings.set_interpolation_quality(global_flags.interpolation_quality + 1);
 473         settings.set_cue_point_padding_seconds(global_flags.cue_point_padding_seconds);
 474         db.store_settings(settings);
 475 }
 476
 477 void MainWindow::play_clicked()
 478 {
 479         if (playlist_clips->empty())
 480                 return;
 481
 482         QItemSelectionModel *selected = ui->playlist->selectionModel();
 483         unsigned start_row;
 484         if (!selected->hasSelection()) {
 485                 start_row = 0;
 486         } else {
 487                 start_row = selected->selectedRows(0)[0].row();
 488         }
 489
 490         vector<Player::ClipWithRow> clips;
 491         for (unsigned row = start_row; row < playlist_clips->size(); ++row) {
 492                 clips.emplace_back(Player::ClipWithRow{ *playlist_clips->clip(row), row });
 493         }
 494         live_player->play(clips);
 495         playlist_clips->set_progress({ { start_row, 0.0f } });
 496         playlist_clips->set_currently_playing(start_row, 0.0f);
 497         playlist_selection_changed();
 498
 499         ui->stop_btn->setEnabled(true);
 500 }
 501
 502 void MainWindow::stop_clicked()
 503 {
 504         Clip fake_clip;
 505         fake_clip.pts_in = 0;
 506         fake_clip.pts_out = 0;
 507         size_t last_row = playlist_clips->size() - 1;
 508         playlist_clips->set_currently_playing(last_row, 0.0f);
 509         live_player->play(fake_clip);
 510 }
 511
 512 void MainWindow::live_player_clip_done()
 513 {
 514         int row = playlist_clips->get_currently_playing();
 515         if (row == -1 || row == int(playlist_clips->size()) - 1) {
 516                 set_output_status("paused");
 517                 playlist_clips->set_progress({});
 518                 playlist_clips->set_currently_playing(-1, 0.0f);
 519         } else {
 520                 playlist_clips->set_progress({ { row + 1, 0.0f } });
 521                 playlist_clips->set_currently_playing(row + 1, 0.0f);
 522         }
 523         ui->stop_btn->setEnabled(false);
 524 }
 525
 526 pair<Clip, size_t> MainWindow::live_player_get_next_clip()
 527 {
 528         // playlist_clips can only be accessed on the main thread.
 529         // Hopefully, we won't have to wait too long for this to come back.
 530         //
 531         // TODO: If MainWindow is in the process of being destroyed and waiting
 532         // for Player to shut down, we could have a deadlock here.
 533         promise<pair<Clip, size_t>> clip_promise;
 534         future<pair<Clip, size_t>> clip = clip_promise.get_future();
 535         post_to_main_thread([&clip_promise] {
 536                 int row = playlist_clips->get_currently_playing();
 537                 if (row != -1 && row < int(playlist_clips->size()) - 1) {
 538                         clip_promise.set_value(make_pair(*playlist_clips->clip(row + 1), row + 1));
 539                 } else {
 540                         clip_promise.set_value(make_pair(Clip(), 0));
 541                 }
 542         });
 543         return clip.get();
 544 }
 545
 546 static string format_duration(double t)
 547 {
 548         int t_ms = lrint(t * 1e3);
 549
 550         int ms = t_ms % 1000;
 551         t_ms /= 1000;
 552         int s = t_ms % 60;
 553         t_ms /= 60;
 554         int m = t_ms;
 555
 556         char buf[256];
 557         snprintf(buf, sizeof(buf), "%d:%02d.%03d", m, s, ms);
 558         return buf;
 559 }
 560
 561 void MainWindow::live_player_clip_progress(const map<size_t, double> &progress)
 562 {
 563         playlist_clips->set_progress(progress);
 564
 565         vector<Clip> clips;
 566         for (size_t row = 0; row < playlist_clips->size(); ++row) {
 567                 clips.push_back(*playlist_clips->clip(row));
 568         }
 569         double remaining = compute_time_left(clips, progress);
 570         set_output_status(format_duration(remaining) + " left");
 571 }
 572
 573 void MainWindow::resizeEvent(QResizeEvent *event)
 574 {
 575         QMainWindow::resizeEvent(event);
 576
 577         // Ask for a relayout, but only after the event loop is done doing relayout
 578         // on everything else.
 579         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 580 }
 581
 582 void MainWindow::relayout()
 583 {
 584         ui->live_display->setMinimumWidth(ui->live_display->height() * 16 / 9);
 585         ui->preview_display->setMinimumWidth(ui->preview_display->height() * 16 / 9);
 586 }
 587
 588 void set_pts_in(int64_t pts, int64_t current_pts, ClipProxy &clip)
 589 {
 590         pts = std::max<int64_t>(pts, 0);
 591         if (clip->pts_out == -1) {
 592                 pts = std::min(pts, current_pts);
 593         } else {
 594                 pts = std::min(pts, clip->pts_out);
 595         }
 596         clip->pts_in = pts;
 597 }
 598
 599 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 600 {
 601         constexpr int dead_zone_pixels = 3;  // To avoid that simple clicks get misinterpreted.
 602         constexpr int camera_degrees_per_pixel = 15;  // One click of most mice.
 603         int scrub_sensitivity = 100;  // pts units per pixel.
 604         int wheel_sensitivity = 100;  // pts units per degree.
 605
 606         unsigned stream_idx = ui->preview_display->get_stream_idx();
 607
 608         if (watched == ui->clip_list) {
 609                 if (event->type() == QEvent::FocusOut) {
 610                         highlight_camera_input(-1);
 611                 }
 612                 return false;
 613         }
 614
 615         if (event->type() != QEvent::Wheel) {
 616                 last_mousewheel_camera_row = -1;
 617         }
 618
 619         if (event->type() == QEvent::MouseButtonPress) {
 620                 QMouseEvent *mouse = (QMouseEvent *)event;
 621
 622                 QTableView *destination;
 623                 ScrubType type;
 624
 625                 if (watched == ui->clip_list->viewport()) {
 626                         destination = ui->clip_list;
 627                         type = SCRUBBING_CLIP_LIST;
 628                 } else if (watched == ui->playlist->viewport()) {
 629                         destination = ui->playlist;
 630                         type = SCRUBBING_PLAYLIST;
 631                 } else {
 632                         return false;
 633                 }
 634                 int column = destination->columnAt(mouse->x());
 635                 int row = destination->rowAt(mouse->y());
 636                 if (column == -1 || row == -1)
 637                         return false;
 638
 639                 if (type == SCRUBBING_CLIP_LIST) {
 640                         if (ClipList::Column(column) == ClipList::Column::IN) {
 641                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_in;
 642                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 643                         } else if (ClipList::Column(column) == ClipList::Column::OUT) {
 644                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_out;
 645                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 646                         } else {
 647                                 return false;
 648                         }
 649                 } else {
 650                         if (PlayList::Column(column) == PlayList::Column::IN) {
 651                                 scrub_pts_origin = playlist_clips->clip(row)->pts_in;
 652                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 653                         } else if (PlayList::Column(column) == PlayList::Column::OUT) {
 654                                 scrub_pts_origin = playlist_clips->clip(row)->pts_out;
 655                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 656                         } else {
 657                                 return false;
 658                         }
 659                 }
 660
 661                 scrubbing = true;
 662                 scrub_row = row;
 663                 scrub_column = column;
 664                 scrub_x_origin = mouse->x();
 665                 scrub_type = type;
 666         } else if (event->type() == QEvent::MouseMove) {
 667                 QMouseEvent *mouse = (QMouseEvent *)event;
 668                 if (mouse->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 669                         scrub_sensitivity *= 10;
 670                         wheel_sensitivity *= 10;
 671                 }
 672                 if (mouse->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 673                         scrub_sensitivity /= 10;
 674                         wheel_sensitivity /= 10;
 675                 }
 676                 if (scrubbing) {
 677                         int offset = mouse->x() - scrub_x_origin;
 678                         int adjusted_offset;
 679                         if (offset >= dead_zone_pixels) {
 680                                 adjusted_offset = offset - dead_zone_pixels;
 681                         } else if (offset < -dead_zone_pixels) {
 682                                 adjusted_offset = offset + dead_zone_pixels;
 683                         } else {
 684                                 adjusted_offset = 0;
 685                         }
 686
 687                         int64_t pts = scrub_pts_origin + adjusted_offset * scrub_sensitivity;
 688                         currently_deferring_model_changes = true;
 689                         if (scrub_type == SCRUBBING_CLIP_LIST) {
 690                                 ClipProxy clip = cliplist_clips->mutable_clip(scrub_row);
 691                                 if (scrub_column == int(ClipList::Column::IN)) {
 692                                         current_change_id = "cliplist:in:" + to_string(scrub_row);
 693                                         set_pts_in(pts, current_pts, clip);
 694                                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 695                                 } else {
 696                                         current_change_id = "cliplist:out" + to_string(scrub_row);
 697                                         pts = std::max(pts, clip->pts_in);
 698                                         pts = std::min(pts, current_pts);
 699                                         clip->pts_out = pts;
 700                                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 701                                 }
 702                         } else {
 703                                 ClipProxy clip = playlist_clips->mutable_clip(scrub_row);
 704                                 if (scrub_column == int(PlayList::Column::IN)) {
 705                                         current_change_id = "playlist:in:" + to_string(scrub_row);
 706                                         set_pts_in(pts, current_pts, clip);
 707                                         preview_single_frame(pts, clip->stream_idx, FIRST_AT_OR_AFTER);
 708                                 } else {
 709                                         current_change_id = "playlist:out:" + to_string(scrub_row);
 710                                         pts = std::max(pts, clip->pts_in);
 711                                         pts = std::min(pts, current_pts);
 712                                         clip->pts_out = pts;
 713                                         preview_single_frame(pts, clip->stream_idx, LAST_BEFORE);
 714                                 }
 715                         }
 716                         currently_deferring_model_changes = false;
 717
 718                         return true;  // Don't use this mouse movement for selecting things.
 719                 }
 720         } else if (event->type() == QEvent::Wheel) {
 721                 QWheelEvent *wheel = (QWheelEvent *)event;
 722                 int angle_delta = wheel->angleDelta().y();
 723                 if (wheel->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 724                         scrub_sensitivity *= 10;
 725                         wheel_sensitivity *= 10;
 726                 }
 727                 if (wheel->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 728                         scrub_sensitivity /= 10;
 729                         wheel_sensitivity /= 10;
 730                         angle_delta = wheel->angleDelta().x();  // Qt ickiness.
 731                 }
 732
 733                 QTableView *destination;
 734                 int in_column, out_column, camera_column;
 735                 if (watched == ui->clip_list->viewport()) {
 736                         destination = ui->clip_list;
 737                         in_column = int(ClipList::Column::IN);
 738                         out_column = int(ClipList::Column::OUT);
 739                         camera_column = -1;
 740                         last_mousewheel_camera_row = -1;
 741                 } else if (watched == ui->playlist->viewport()) {
 742                         destination = ui->playlist;
 743                         in_column = int(PlayList::Column::IN);
 744                         out_column = int(PlayList::Column::OUT);
 745                         camera_column = int(PlayList::Column::CAMERA);
 746                 } else {
 747                         last_mousewheel_camera_row = -1;
 748                         return false;
 749                 }
 750                 int column = destination->columnAt(wheel->x());
 751                 int row = destination->rowAt(wheel->y());
 752                 if (column == -1 || row == -1)
 753                         return false;
 754
 755                 // Only adjust pts with the wheel if the given row is selected.
 756                 if (!destination->hasFocus() ||
 757                     row != destination->selectionModel()->currentIndex().row()) {
 758                         return false;
 759                 }
 760
 761                 currently_deferring_model_changes = true;
 762                 {
 763                         current_change_id = (watched == ui->clip_list->viewport()) ? "cliplist:" : "playlist:";
 764                         ClipProxy clip = (watched == ui->clip_list->viewport()) ? cliplist_clips->mutable_clip(row) : playlist_clips->mutable_clip(row);
 765                         if (watched == ui->playlist->viewport()) {
 766                                 stream_idx = clip->stream_idx;
 767                         }
 768
 769                         if (column != camera_column) {
 770                                 last_mousewheel_camera_row = -1;
 771                         }
 772                         if (column == in_column) {
 773                                 current_change_id += "in:" + to_string(row);
 774                                 int64_t pts = clip->pts_in + angle_delta * wheel_sensitivity;
 775                                 set_pts_in(pts, current_pts, clip);
 776                                 preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 777                         } else if (column == out_column) {
 778                                 current_change_id += "out:" + to_string(row);
 779                                 int64_t pts = clip->pts_out + angle_delta * wheel_sensitivity;
 780                                 pts = std::max(pts, clip->pts_in);
 781                                 pts = std::min(pts, current_pts);
 782                                 clip->pts_out = pts;
 783                                 preview_single_frame(pts, stream_idx, LAST_BEFORE);
 784                         } else if (column == camera_column) {
 785                                 current_change_id += "camera:" + to_string(row);
 786                                 int angle_degrees = angle_delta;
 787                                 if (last_mousewheel_camera_row == row) {
 788                                         angle_degrees += leftover_angle_degrees;
 789                                 }
 790
 791                                 int stream_idx = clip->stream_idx + angle_degrees / camera_degrees_per_pixel;
 792                                 stream_idx = std::max(stream_idx, 0);
 793                                 stream_idx = std::min<int>(stream_idx, num_cameras - 1);
 794                                 clip->stream_idx = stream_idx;
 795
 796                                 last_mousewheel_camera_row = row;
 797                                 leftover_angle_degrees = angle_degrees % camera_degrees_per_pixel;
 798
 799                                 // Don't update the live view, that's rarely what the operator wants.
 800                         }
 801                 }
 802                 currently_deferring_model_changes = false;
 803                 return true;  // Don't scroll.
 804         } else if (event->type() == QEvent::MouseButtonRelease) {
 805                 scrubbing = false;
 806         }
 807         return false;
 808 }
 809
 810 void MainWindow::preview_single_frame(int64_t pts, unsigned stream_idx, MainWindow::Rounding rounding)
 811 {
 812         if (rounding == LAST_BEFORE) {
 813                 lock_guard<mutex> lock(frame_mu);
 814                 if (frames[stream_idx].empty())
 815                         return;
 816                 auto it = find_last_frame_before(frames[stream_idx], pts);
 817                 if (it != frames[stream_idx].end()) {
 818                         pts = it->pts;
 819                 }
 820         } else {
 821                 assert(rounding == FIRST_AT_OR_AFTER);
 822                 lock_guard<mutex> lock(frame_mu);
 823                 if (frames[stream_idx].empty())
 824                         return;
 825                 auto it = find_first_frame_at_or_after(frames[stream_idx], pts);
 826                 if (it != frames[stream_idx].end()) {
 827                         pts = it->pts;
 828                 }
 829         }
 830
 831         Clip fake_clip;
 832         fake_clip.pts_in = pts;
 833         fake_clip.pts_out = pts + 1;
 834         preview_player->play(fake_clip);
 835 }
 836
 837 void MainWindow::playlist_selection_changed()
 838 {
 839         QItemSelectionModel *selected = ui->playlist->selectionModel();
 840         bool any_selected = selected->hasSelection();
 841         ui->playlist_duplicate_btn->setEnabled(any_selected);
 842         ui->playlist_remove_btn->setEnabled(any_selected);
 843         ui->playlist_move_up_btn->setEnabled(
 844                 any_selected && selected->selectedRows().front().row() > 0);
 845         ui->playlist_move_down_btn->setEnabled(
 846                 any_selected && selected->selectedRows().back().row() < int(playlist_clips->size()) - 1);
 847         ui->play_btn->setEnabled(!playlist_clips->empty());
 848
 849         if (!any_selected) {
 850                 set_output_status("paused");
 851         } else {
 852                 vector<Clip> clips;
 853                 for (size_t row = 0; row < playlist_clips->size(); ++row) {
 854                         clips.push_back(*playlist_clips->clip(row));
 855                 }
 856                 double remaining = compute_time_left(clips, { { selected->selectedRows().front().row(), 0.0 } });
 857                 set_output_status(format_duration(remaining) + " ready");
 858         }
 859 }
 860
 861 void MainWindow::clip_list_selection_changed(const QModelIndex &current, const QModelIndex &)
 862 {
 863         int camera_selected = -1;
 864         if (cliplist_clips->is_camera_column(current.column())) {
 865                 camera_selected = current.column() - int(ClipList::Column::CAMERA_1);
 866         }
 867         highlight_camera_input(camera_selected);
 868 }
 869
 870 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
 871 {
 872         char time_str[256];
 873         if (estimated_seconds_left < 60.0) {
 874                 strcpy(time_str, "<font color=\"red\">Less than a minute</font>");
 875         } else if (estimated_seconds_left < 1800.0) {  // Less than half an hour: Xm Ys (red).
 876                 int s = lrintf(estimated_seconds_left);
 877                 int m = s / 60;
 878                 s %= 60;
 879                 snprintf(time_str, sizeof(time_str), "<font color=\"red\">%dm %ds</font>", m, s);
 880         } else if (estimated_seconds_left < 3600.0) {  // Less than an hour: Xm.
 881                 int m = lrintf(estimated_seconds_left / 60.0);
 882                 snprintf(time_str, sizeof(time_str), "%dm", m);
 883         } else if (estimated_seconds_left < 36000.0) {  // Less than ten hours: Xh Ym.
 884                 int m = lrintf(estimated_seconds_left / 60.0);
 885                 int h = m / 60;
 886                 m %= 60;
 887                 snprintf(time_str, sizeof(time_str), "%dh %dm", h, m);
 888         } else {  // More than ten hours: Xh.
 889                 int h = lrintf(estimated_seconds_left / 3600.0);
 890                 snprintf(time_str, sizeof(time_str), "%dh", h);
 891         }
 892         char buf[256];
 893         snprintf(buf, sizeof(buf), "Disk free: %'.0f MB (approx. %s)", free_bytes / 1048576.0, time_str);
 894
 895         std::string label = buf;
 896
 897         post_to_main_thread([this, label] {
 898                 disk_free_label->setText(QString::fromStdString(label));
 899                 ui->menuBar->setCornerWidget(disk_free_label);  // Need to set this again for the sizing to get right.
 900         });
 901 }
 902
 903 void MainWindow::exit_triggered()
 904 {
 905         close();
 906 }
 907
 908 void MainWindow::export_cliplist_clip_multitrack_triggered()
 909 {
 910         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 911         if (!selected->hasSelection()) {
 912                 QMessageBox msgbox;
 913                 msgbox.setText("No clip selected in the clip list. Select one and try exporting again.");
 914                 msgbox.exec();
 915                 return;
 916         }
 917
 918         QModelIndex index = selected->currentIndex();
 919         Clip clip = *cliplist_clips->clip(index.row());
 920         QString filename = QFileDialog::getSaveFileName(this,
 921                 "Export multitrack clip", QString(), tr("Matroska video files (*.mkv)"));
 922         if (filename.isNull()) {
 923                 // Cancel.
 924                 return;
 925         }
 926         if (!filename.endsWith(".mkv")) {
 927                 filename += ".mkv";
 928         }
 929         export_multitrack_clip(filename.toStdString(), clip);
 930 }
 931
 932 void MainWindow::export_playlist_clip_interpolated_triggered()
 933 {
 934         QItemSelectionModel *selected = ui->playlist->selectionModel();
 935         if (!selected->hasSelection()) {
 936                 QMessageBox msgbox;
 937                 msgbox.setText("No clip selected in the playlist. Select one and try exporting again.");
 938                 msgbox.exec();
 939                 return;
 940         }
 941
 942         QString filename = QFileDialog::getSaveFileName(this,
 943                 "Export interpolated clip", QString(), tr("Matroska video files (*.mkv)"));
 944         if (filename.isNull()) {
 945                 // Cancel.
 946                 return;
 947         }
 948         if (!filename.endsWith(".mkv")) {
 949                 filename += ".mkv";
 950         }
 951
 952         vector<Clip> clips;
 953         QModelIndexList rows = selected->selectedRows();
 954         for (QModelIndex index : rows) {
 955                 clips.push_back(*playlist_clips->clip(index.row()));
 956         }
 957         export_interpolated_clip(filename.toStdString(), clips);
 958 }
 959
 960 void MainWindow::manual_triggered()
 961 {
 962         if (!QDesktopServices::openUrl(QUrl("https://nageru.sesse.net/doc/"))) {
 963                 QMessageBox msgbox;
 964                 msgbox.setText("Could not launch manual in web browser.\nPlease see https://nageru.sesse.net/doc/ manually.");
 965                 msgbox.exec();
 966         }
 967 }
 968
 969 void MainWindow::about_triggered()
 970 {
 971         AboutDialog("Futatabi", "Multicamera slow motion video server").exec();
 972 }
 973
 974 void MainWindow::undo_triggered()
 975 {
 976         // Finish any deferred action.
 977         if (defer_timeout->isActive()) {
 978                 defer_timeout->stop();
 979                 state_changed(deferred_state);
 980         }
 981
 982         StateProto redo_state;
 983         *redo_state.mutable_clip_list() = cliplist_clips->serialize();
 984         *redo_state.mutable_play_list() = playlist_clips->serialize();
 985         redo_stack.push_back(std::move(redo_state));
 986         ui->redo_action->setEnabled(true);
 987
 988         assert(undo_stack.size() > 1);
 989
 990         // Pop off the current state, which is always at the top of the stack.
 991         undo_stack.pop_back();
 992
 993         StateProto state = undo_stack.back();
 994         ui->undo_action->setEnabled(undo_stack.size() > 1);
 995
 996         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
 997         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
 998
 999         db.store_state(state);
1000 }
1001
1002 void MainWindow::redo_triggered()
1003 {
1004         assert(!redo_stack.empty());
1005
1006         ui->undo_action->setEnabled(true);
1007         ui->redo_action->setEnabled(true);
1008
1009         undo_stack.push_back(std::move(redo_stack.back()));
1010         redo_stack.pop_back();
1011         ui->undo_action->setEnabled(true);
1012         ui->redo_action->setEnabled(!redo_stack.empty());
1013
1014         const StateProto &state = undo_stack.back();
1015         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1016         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1017
1018         db.store_state(state);
1019 }
1020
1021 void MainWindow::quality_toggled(int quality, bool checked)
1022 {
1023         if (!checked) {
1024                 return;
1025         }
1026         global_flags.interpolation_quality = quality;
1027         if (quality != 0 &&  // Turning interpolation off is always possible.
1028             quality != flow_initialized_interpolation_quality) {
1029                 QMessageBox msgbox;
1030                 msgbox.setText(QString::fromStdString(
1031                         "The interpolation quality for the main output cannot be changed at runtime, "
1032                         "except being turned completely off; it will take effect for exported files "
1033                         "only until next restart. The live output quality thus remains at " +
1034                         to_string(flow_initialized_interpolation_quality) + "."));
1035                 msgbox.exec();
1036         }
1037
1038         save_settings();
1039 }
1040
1041 void MainWindow::padding_toggled(double seconds, bool checked)
1042 {
1043         if (!checked) {
1044                 return;
1045         }
1046         global_flags.cue_point_padding_seconds = seconds;
1047         save_settings();
1048 }
1049
1050 void MainWindow::highlight_camera_input(int stream_idx)
1051 {
1052         for (unsigned i = 0; i < num_cameras; ++i) {
1053                 if (unsigned(stream_idx) == i) {
1054                         displays[i].frame->setStyleSheet("background: rgb(0,255,0)");
1055                 } else {
1056                         displays[i].frame->setStyleSheet("");
1057                 }
1058         }
1059 }
1060
1061 void MainWindow::set_output_status(const string &status)
1062 {
1063         ui->live_label->setText(QString::fromStdString("Current output (" + status + ")"));
1064
1065         lock_guard<mutex> lock(queue_status_mu);
1066         queue_status = status;
1067 }
1068
1069 pair<string, string> MainWindow::get_queue_status() const
1070 {
1071         lock_guard<mutex> lock(queue_status_mu);
1072         return { queue_status, "text/plain" };
1073 }
1074
1075 void MainWindow::display_frame(unsigned stream_idx, const FrameOnDisk &frame)
1076 {
1077         if (stream_idx >= MAX_STREAMS) {
1078                 fprintf(stderr, "WARNING: Ignoring too-high stream index %u.\n", stream_idx);
1079                 return;
1080         }
1081         if (stream_idx >= num_cameras) {
1082                 post_to_main_thread_and_wait([this, stream_idx] {
1083                         num_cameras = stream_idx + 1;
1084                         change_num_cameras();
1085                 });
1086         }
1087         displays[stream_idx].display->setFrame(stream_idx, frame);
1088 }
1089
1090 template<class Model>
1091 void MainWindow::replace_model(QTableView *view, Model **model, Model *new_model)
1092 {
1093         QItemSelectionModel *old_selection_model = view->selectionModel();
1094         view->setModel(new_model);
1095         delete *model;
1096         delete old_selection_model;
1097         *model = new_model;
1098         connect(new_model, &Model::any_content_changed, this, &MainWindow::content_changed);
1099 }
1100
1101 void MainWindow::start_tally()
1102 {
1103         http_reply = http.get(QNetworkRequest(QString::fromStdString(global_flags.tally_url)));
1104         connect(http_reply, &QNetworkReply::finished, this, &MainWindow::tally_received);
1105 }
1106
1107 void MainWindow::tally_received()
1108 {
1109         unsigned time_to_next_tally_ms;
1110         if (http_reply->error()) {
1111                 fprintf(stderr, "HTTP get of '%s' failed: %s\n", global_flags.tally_url.c_str(),
1112                         http_reply->errorString().toStdString().c_str());
1113                 ui->live_frame->setStyleSheet("");
1114                 time_to_next_tally_ms = 1000;
1115         } else {
1116                 string contents = http_reply->readAll().toStdString();
1117                 ui->live_frame->setStyleSheet(QString::fromStdString("background: " + contents));
1118                 time_to_next_tally_ms = 100;
1119         }
1120         http_reply->deleteLater();
1121         http_reply = nullptr;
1122
1123         QTimer::singleShot(time_to_next_tally_ms, this, &MainWindow::start_tally);
1124 }