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_done();
 190                 });
 191         });
 192         live_player->set_progress_callback([this](const map<uint64_t, double> &progress, double time_remaining) {
 193                 post_to_main_thread([this, progress, time_remaining] {
 194                         live_player_clip_progress(progress, time_remaining);
 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 we are playing, update the part of the playlist that's not playing yet.
 435         vector<ClipWithID> clips;
 436         for (unsigned row = 0; row < playlist_clips->size(); ++row) {
 437                 clips.emplace_back(*playlist_clips->clip_with_id(row));
 438         }
 439         live_player->splice_play(clips);
 440
 441         // Serialize the state.
 442         if (defer_timeout->isActive() &&
 443             (!currently_deferring_model_changes || deferred_change_id != current_change_id)) {
 444                 // There's some deferred event waiting, but this event is unrelated.
 445                 // So it's time to short-circuit that timer and do the work it wanted to do.
 446                 defer_timeout->stop();
 447                 state_changed(deferred_state);
 448         }
 449         StateProto state;
 450         *state.mutable_clip_list() = cliplist_clips->serialize();
 451         *state.mutable_play_list() = playlist_clips->serialize();
 452         if (currently_deferring_model_changes) {
 453                 deferred_change_id = current_change_id;
 454                 deferred_state = std::move(state);
 455                 defer_timeout->start(200);
 456                 return;
 457         }
 458         state_changed(state);
 459 }
 460
 461 void MainWindow::state_changed(const StateProto &state)
 462 {
 463         db.store_state(state);
 464
 465         redo_stack.clear();
 466         ui->redo_action->setEnabled(false);
 467
 468         undo_stack.push_back(state);
 469         ui->undo_action->setEnabled(undo_stack.size() > 1);
 470
 471         // Make sure it doesn't grow without bounds.
 472         while (undo_stack.size() >= 100) {
 473                 undo_stack.pop_front();
 474         }
 475 }
 476
 477 void MainWindow::save_settings()
 478 {
 479         SettingsProto settings;
 480         settings.set_interpolation_quality(global_flags.interpolation_quality + 1);
 481         settings.set_cue_point_padding_seconds(global_flags.cue_point_padding_seconds);
 482         db.store_settings(settings);
 483 }
 484
 485 void MainWindow::play_clicked()
 486 {
 487         if (playlist_clips->empty())
 488                 return;
 489
 490         QItemSelectionModel *selected = ui->playlist->selectionModel();
 491         unsigned start_row;
 492         if (!selected->hasSelection()) {
 493                 start_row = 0;
 494         } else {
 495                 start_row = selected->selectedRows(0)[0].row();
 496         }
 497
 498         vector<ClipWithID> clips;
 499         for (unsigned row = start_row; row < playlist_clips->size(); ++row) {
 500                 clips.emplace_back(*playlist_clips->clip_with_id(row));
 501         }
 502         live_player->play(clips);
 503         playlist_clips->set_progress({ { start_row, 0.0f } });
 504         ui->playlist->selectionModel()->clear();
 505         playlist_selection_changed();
 506
 507         ui->stop_btn->setEnabled(true);
 508 }
 509
 510 void MainWindow::stop_clicked()
 511 {
 512         Clip fake_clip;
 513         fake_clip.pts_in = 0;
 514         fake_clip.pts_out = 0;
 515         playlist_clips->set_progress({});
 516         live_player->play(fake_clip);
 517         ui->stop_btn->setEnabled(false);
 518 }
 519
 520 void MainWindow::live_player_done()
 521 {
 522         playlist_selection_changed();
 523         playlist_clips->set_progress({});
 524         ui->stop_btn->setEnabled(false);
 525 }
 526
 527 void MainWindow::live_player_clip_progress(const map<uint64_t, double> &progress, double time_remaining)
 528 {
 529         playlist_clips->set_progress(progress);
 530         set_output_status(format_duration(time_remaining) + " left");
 531 }
 532
 533 void MainWindow::resizeEvent(QResizeEvent *event)
 534 {
 535         QMainWindow::resizeEvent(event);
 536
 537         // Ask for a relayout, but only after the event loop is done doing relayout
 538         // on everything else.
 539         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 540 }
 541
 542 void MainWindow::relayout()
 543 {
 544         ui->live_display->setMinimumWidth(ui->live_display->height() * 16 / 9);
 545         ui->preview_display->setMinimumWidth(ui->preview_display->height() * 16 / 9);
 546 }
 547
 548 void set_pts_in(int64_t pts, int64_t current_pts, ClipProxy &clip)
 549 {
 550         pts = std::max<int64_t>(pts, 0);
 551         if (clip->pts_out == -1) {
 552                 pts = std::min(pts, current_pts);
 553         } else {
 554                 pts = std::min(pts, clip->pts_out);
 555         }
 556         clip->pts_in = pts;
 557 }
 558
 559 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 560 {
 561         constexpr int dead_zone_pixels = 3;  // To avoid that simple clicks get misinterpreted.
 562         constexpr int camera_degrees_per_pixel = 15;  // One click of most mice.
 563         int scrub_sensitivity = 100;  // pts units per pixel.
 564         int wheel_sensitivity = 100;  // pts units per degree.
 565
 566         unsigned stream_idx = ui->preview_display->get_stream_idx();
 567
 568         if (watched == ui->clip_list) {
 569                 if (event->type() == QEvent::FocusOut) {
 570                         highlight_camera_input(-1);
 571                 }
 572                 return false;
 573         }
 574
 575         if (event->type() != QEvent::Wheel) {
 576                 last_mousewheel_camera_row = -1;
 577         }
 578
 579         if (event->type() == QEvent::MouseButtonPress) {
 580                 QMouseEvent *mouse = (QMouseEvent *)event;
 581
 582                 QTableView *destination;
 583                 ScrubType type;
 584
 585                 if (watched == ui->clip_list->viewport()) {
 586                         destination = ui->clip_list;
 587                         type = SCRUBBING_CLIP_LIST;
 588                 } else if (watched == ui->playlist->viewport()) {
 589                         destination = ui->playlist;
 590                         type = SCRUBBING_PLAYLIST;
 591                 } else {
 592                         return false;
 593                 }
 594                 int column = destination->columnAt(mouse->x());
 595                 int row = destination->rowAt(mouse->y());
 596                 if (column == -1 || row == -1)
 597                         return false;
 598
 599                 if (type == SCRUBBING_CLIP_LIST) {
 600                         if (ClipList::Column(column) == ClipList::Column::IN) {
 601                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_in;
 602                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 603                         } else if (ClipList::Column(column) == ClipList::Column::OUT) {
 604                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_out;
 605                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 606                         } else {
 607                                 return false;
 608                         }
 609                 } else {
 610                         if (PlayList::Column(column) == PlayList::Column::IN) {
 611                                 scrub_pts_origin = playlist_clips->clip(row)->pts_in;
 612                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 613                         } else if (PlayList::Column(column) == PlayList::Column::OUT) {
 614                                 scrub_pts_origin = playlist_clips->clip(row)->pts_out;
 615                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 616                         } else {
 617                                 return false;
 618                         }
 619                 }
 620
 621                 scrubbing = true;
 622                 scrub_row = row;
 623                 scrub_column = column;
 624                 scrub_x_origin = mouse->x();
 625                 scrub_type = type;
 626         } else if (event->type() == QEvent::MouseMove) {
 627                 QMouseEvent *mouse = (QMouseEvent *)event;
 628                 if (mouse->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 629                         scrub_sensitivity *= 10;
 630                         wheel_sensitivity *= 10;
 631                 }
 632                 if (mouse->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 633                         scrub_sensitivity /= 10;
 634                         wheel_sensitivity /= 10;
 635                 }
 636                 if (scrubbing) {
 637                         int offset = mouse->x() - scrub_x_origin;
 638                         int adjusted_offset;
 639                         if (offset >= dead_zone_pixels) {
 640                                 adjusted_offset = offset - dead_zone_pixels;
 641                         } else if (offset < -dead_zone_pixels) {
 642                                 adjusted_offset = offset + dead_zone_pixels;
 643                         } else {
 644                                 adjusted_offset = 0;
 645                         }
 646
 647                         int64_t pts = scrub_pts_origin + adjusted_offset * scrub_sensitivity;
 648                         currently_deferring_model_changes = true;
 649                         if (scrub_type == SCRUBBING_CLIP_LIST) {
 650                                 ClipProxy clip = cliplist_clips->mutable_clip(scrub_row);
 651                                 if (scrub_column == int(ClipList::Column::IN)) {
 652                                         current_change_id = "cliplist:in:" + to_string(scrub_row);
 653                                         set_pts_in(pts, current_pts, clip);
 654                                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 655                                 } else {
 656                                         current_change_id = "cliplist:out" + to_string(scrub_row);
 657                                         pts = std::max(pts, clip->pts_in);
 658                                         pts = std::min(pts, current_pts);
 659                                         clip->pts_out = pts;
 660                                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 661                                 }
 662                         } else {
 663                                 ClipProxy clip = playlist_clips->mutable_clip(scrub_row);
 664                                 if (scrub_column == int(PlayList::Column::IN)) {
 665                                         current_change_id = "playlist:in:" + to_string(scrub_row);
 666                                         set_pts_in(pts, current_pts, clip);
 667                                         preview_single_frame(pts, clip->stream_idx, FIRST_AT_OR_AFTER);
 668                                 } else {
 669                                         current_change_id = "playlist:out:" + to_string(scrub_row);
 670                                         pts = std::max(pts, clip->pts_in);
 671                                         pts = std::min(pts, current_pts);
 672                                         clip->pts_out = pts;
 673                                         preview_single_frame(pts, clip->stream_idx, LAST_BEFORE);
 674                                 }
 675                         }
 676                         currently_deferring_model_changes = false;
 677
 678                         return true;  // Don't use this mouse movement for selecting things.
 679                 }
 680         } else if (event->type() == QEvent::Wheel) {
 681                 QWheelEvent *wheel = (QWheelEvent *)event;
 682                 int angle_delta = wheel->angleDelta().y();
 683                 if (wheel->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 684                         scrub_sensitivity *= 10;
 685                         wheel_sensitivity *= 10;
 686                 }
 687                 if (wheel->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 688                         scrub_sensitivity /= 10;
 689                         wheel_sensitivity /= 10;
 690                         angle_delta = wheel->angleDelta().x();  // Qt ickiness.
 691                 }
 692
 693                 QTableView *destination;
 694                 int in_column, out_column, camera_column;
 695                 if (watched == ui->clip_list->viewport()) {
 696                         destination = ui->clip_list;
 697                         in_column = int(ClipList::Column::IN);
 698                         out_column = int(ClipList::Column::OUT);
 699                         camera_column = -1;
 700                         last_mousewheel_camera_row = -1;
 701                 } else if (watched == ui->playlist->viewport()) {
 702                         destination = ui->playlist;
 703                         in_column = int(PlayList::Column::IN);
 704                         out_column = int(PlayList::Column::OUT);
 705                         camera_column = int(PlayList::Column::CAMERA);
 706                 } else {
 707                         last_mousewheel_camera_row = -1;
 708                         return false;
 709                 }
 710                 int column = destination->columnAt(wheel->x());
 711                 int row = destination->rowAt(wheel->y());
 712                 if (column == -1 || row == -1)
 713                         return false;
 714
 715                 // Only adjust pts with the wheel if the given row is selected.
 716                 if (!destination->hasFocus() ||
 717                     row != destination->selectionModel()->currentIndex().row()) {
 718                         return false;
 719                 }
 720
 721                 currently_deferring_model_changes = true;
 722                 {
 723                         current_change_id = (watched == ui->clip_list->viewport()) ? "cliplist:" : "playlist:";
 724                         ClipProxy clip = (watched == ui->clip_list->viewport()) ? cliplist_clips->mutable_clip(row) : playlist_clips->mutable_clip(row);
 725                         if (watched == ui->playlist->viewport()) {
 726                                 stream_idx = clip->stream_idx;
 727                         }
 728
 729                         if (column != camera_column) {
 730                                 last_mousewheel_camera_row = -1;
 731                         }
 732                         if (column == in_column) {
 733                                 current_change_id += "in:" + to_string(row);
 734                                 int64_t pts = clip->pts_in + angle_delta * wheel_sensitivity;
 735                                 set_pts_in(pts, current_pts, clip);
 736                                 preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 737                         } else if (column == out_column) {
 738                                 current_change_id += "out:" + to_string(row);
 739                                 int64_t pts = clip->pts_out + angle_delta * wheel_sensitivity;
 740                                 pts = std::max(pts, clip->pts_in);
 741                                 pts = std::min(pts, current_pts);
 742                                 clip->pts_out = pts;
 743                                 preview_single_frame(pts, stream_idx, LAST_BEFORE);
 744                         } else if (column == camera_column) {
 745                                 current_change_id += "camera:" + to_string(row);
 746                                 int angle_degrees = angle_delta;
 747                                 if (last_mousewheel_camera_row == row) {
 748                                         angle_degrees += leftover_angle_degrees;
 749                                 }
 750
 751                                 int stream_idx = clip->stream_idx + angle_degrees / camera_degrees_per_pixel;
 752                                 stream_idx = std::max(stream_idx, 0);
 753                                 stream_idx = std::min<int>(stream_idx, num_cameras - 1);
 754                                 clip->stream_idx = stream_idx;
 755
 756                                 last_mousewheel_camera_row = row;
 757                                 leftover_angle_degrees = angle_degrees % camera_degrees_per_pixel;
 758
 759                                 // Don't update the live view, that's rarely what the operator wants.
 760                         }
 761                 }
 762                 currently_deferring_model_changes = false;
 763                 return true;  // Don't scroll.
 764         } else if (event->type() == QEvent::MouseButtonRelease) {
 765                 scrubbing = false;
 766         }
 767         return false;
 768 }
 769
 770 void MainWindow::preview_single_frame(int64_t pts, unsigned stream_idx, MainWindow::Rounding rounding)
 771 {
 772         if (rounding == LAST_BEFORE) {
 773                 lock_guard<mutex> lock(frame_mu);
 774                 if (frames[stream_idx].empty())
 775                         return;
 776                 auto it = find_last_frame_before(frames[stream_idx], pts);
 777                 if (it != frames[stream_idx].end()) {
 778                         pts = it->pts;
 779                 }
 780         } else {
 781                 assert(rounding == FIRST_AT_OR_AFTER);
 782                 lock_guard<mutex> lock(frame_mu);
 783                 if (frames[stream_idx].empty())
 784                         return;
 785                 auto it = find_first_frame_at_or_after(frames[stream_idx], pts);
 786                 if (it != frames[stream_idx].end()) {
 787                         pts = it->pts;
 788                 }
 789         }
 790
 791         Clip fake_clip;
 792         fake_clip.pts_in = pts;
 793         fake_clip.pts_out = pts + 1;
 794         preview_player->play(fake_clip);
 795 }
 796
 797 void MainWindow::playlist_selection_changed()
 798 {
 799         QItemSelectionModel *selected = ui->playlist->selectionModel();
 800         bool any_selected = selected->hasSelection();
 801         ui->playlist_duplicate_btn->setEnabled(any_selected);
 802         ui->playlist_remove_btn->setEnabled(any_selected);
 803         ui->playlist_move_up_btn->setEnabled(
 804                 any_selected && selected->selectedRows().front().row() > 0);
 805         ui->playlist_move_down_btn->setEnabled(
 806                 any_selected && selected->selectedRows().back().row() < int(playlist_clips->size()) - 1);
 807         ui->play_btn->setEnabled(!playlist_clips->empty());
 808
 809         if (!any_selected) {
 810                 set_output_status("paused");
 811         } else {
 812                 vector<ClipWithID> clips;
 813                 for (size_t row = selected->selectedRows().front().row(); row < playlist_clips->size(); ++row) {
 814                         clips.emplace_back(*playlist_clips->clip_with_id(row));
 815                 }
 816                 double remaining = compute_total_time(clips);
 817                 set_output_status(format_duration(remaining) + " ready");
 818         }
 819 }
 820
 821 void MainWindow::clip_list_selection_changed(const QModelIndex &current, const QModelIndex &)
 822 {
 823         int camera_selected = -1;
 824         if (cliplist_clips->is_camera_column(current.column())) {
 825                 camera_selected = current.column() - int(ClipList::Column::CAMERA_1);
 826         }
 827         highlight_camera_input(camera_selected);
 828 }
 829
 830 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
 831 {
 832         char time_str[256];
 833         if (estimated_seconds_left < 60.0) {
 834                 strcpy(time_str, "<font color=\"red\">Less than a minute</font>");
 835         } else if (estimated_seconds_left < 1800.0) {  // Less than half an hour: Xm Ys (red).
 836                 int s = lrintf(estimated_seconds_left);
 837                 int m = s / 60;
 838                 s %= 60;
 839                 snprintf(time_str, sizeof(time_str), "<font color=\"red\">%dm %ds</font>", m, s);
 840         } else if (estimated_seconds_left < 3600.0) {  // Less than an hour: Xm.
 841                 int m = lrintf(estimated_seconds_left / 60.0);
 842                 snprintf(time_str, sizeof(time_str), "%dm", m);
 843         } else if (estimated_seconds_left < 36000.0) {  // Less than ten hours: Xh Ym.
 844                 int m = lrintf(estimated_seconds_left / 60.0);
 845                 int h = m / 60;
 846                 m %= 60;
 847                 snprintf(time_str, sizeof(time_str), "%dh %dm", h, m);
 848         } else {  // More than ten hours: Xh.
 849                 int h = lrintf(estimated_seconds_left / 3600.0);
 850                 snprintf(time_str, sizeof(time_str), "%dh", h);
 851         }
 852         char buf[256];
 853         snprintf(buf, sizeof(buf), "Disk free: %'.0f MB (approx. %s)", free_bytes / 1048576.0, time_str);
 854
 855         std::string label = buf;
 856
 857         post_to_main_thread([this, label] {
 858                 disk_free_label->setText(QString::fromStdString(label));
 859                 ui->menuBar->setCornerWidget(disk_free_label);  // Need to set this again for the sizing to get right.
 860         });
 861 }
 862
 863 void MainWindow::exit_triggered()
 864 {
 865         close();
 866 }
 867
 868 void MainWindow::export_cliplist_clip_multitrack_triggered()
 869 {
 870         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 871         if (!selected->hasSelection()) {
 872                 QMessageBox msgbox;
 873                 msgbox.setText("No clip selected in the clip list. Select one and try exporting again.");
 874                 msgbox.exec();
 875                 return;
 876         }
 877
 878         QModelIndex index = selected->currentIndex();
 879         Clip clip = *cliplist_clips->clip(index.row());
 880         QString filename = QFileDialog::getSaveFileName(this,
 881                 "Export multitrack clip", QString(), tr("Matroska video files (*.mkv)"));
 882         if (filename.isNull()) {
 883                 // Cancel.
 884                 return;
 885         }
 886         if (!filename.endsWith(".mkv")) {
 887                 filename += ".mkv";
 888         }
 889         export_multitrack_clip(filename.toStdString(), clip);
 890 }
 891
 892 void MainWindow::export_playlist_clip_interpolated_triggered()
 893 {
 894         QItemSelectionModel *selected = ui->playlist->selectionModel();
 895         if (!selected->hasSelection()) {
 896                 QMessageBox msgbox;
 897                 msgbox.setText("No clip selected in the playlist. Select one and try exporting again.");
 898                 msgbox.exec();
 899                 return;
 900         }
 901
 902         QString filename = QFileDialog::getSaveFileName(this,
 903                 "Export interpolated clip", QString(), tr("Matroska video files (*.mkv)"));
 904         if (filename.isNull()) {
 905                 // Cancel.
 906                 return;
 907         }
 908         if (!filename.endsWith(".mkv")) {
 909                 filename += ".mkv";
 910         }
 911
 912         vector<Clip> clips;
 913         QModelIndexList rows = selected->selectedRows();
 914         for (QModelIndex index : rows) {
 915                 clips.push_back(*playlist_clips->clip(index.row()));
 916         }
 917         export_interpolated_clip(filename.toStdString(), clips);
 918 }
 919
 920 void MainWindow::manual_triggered()
 921 {
 922         if (!QDesktopServices::openUrl(QUrl("https://nageru.sesse.net/doc/"))) {
 923                 QMessageBox msgbox;
 924                 msgbox.setText("Could not launch manual in web browser.\nPlease see https://nageru.sesse.net/doc/ manually.");
 925                 msgbox.exec();
 926         }
 927 }
 928
 929 void MainWindow::about_triggered()
 930 {
 931         AboutDialog("Futatabi", "Multicamera slow motion video server").exec();
 932 }
 933
 934 void MainWindow::undo_triggered()
 935 {
 936         // Finish any deferred action.
 937         if (defer_timeout->isActive()) {
 938                 defer_timeout->stop();
 939                 state_changed(deferred_state);
 940         }
 941
 942         StateProto redo_state;
 943         *redo_state.mutable_clip_list() = cliplist_clips->serialize();
 944         *redo_state.mutable_play_list() = playlist_clips->serialize();
 945         redo_stack.push_back(std::move(redo_state));
 946         ui->redo_action->setEnabled(true);
 947
 948         assert(undo_stack.size() > 1);
 949
 950         // Pop off the current state, which is always at the top of the stack.
 951         undo_stack.pop_back();
 952
 953         StateProto state = undo_stack.back();
 954         ui->undo_action->setEnabled(undo_stack.size() > 1);
 955
 956         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
 957         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
 958
 959         db.store_state(state);
 960 }
 961
 962 void MainWindow::redo_triggered()
 963 {
 964         assert(!redo_stack.empty());
 965
 966         ui->undo_action->setEnabled(true);
 967         ui->redo_action->setEnabled(true);
 968
 969         undo_stack.push_back(std::move(redo_stack.back()));
 970         redo_stack.pop_back();
 971         ui->undo_action->setEnabled(true);
 972         ui->redo_action->setEnabled(!redo_stack.empty());
 973
 974         const StateProto &state = undo_stack.back();
 975         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
 976         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
 977
 978         db.store_state(state);
 979 }
 980
 981 void MainWindow::quality_toggled(int quality, bool checked)
 982 {
 983         if (!checked) {
 984                 return;
 985         }
 986         global_flags.interpolation_quality = quality;
 987         if (quality != 0 &&  // Turning interpolation off is always possible.
 988             quality != flow_initialized_interpolation_quality) {
 989                 QMessageBox msgbox;
 990                 msgbox.setText(QString::fromStdString(
 991                         "The interpolation quality for the main output cannot be changed at runtime, "
 992                         "except being turned completely off; it will take effect for exported files "
 993                         "only until next restart. The live output quality thus remains at " +
 994                         to_string(flow_initialized_interpolation_quality) + "."));
 995                 msgbox.exec();
 996         }
 997
 998         save_settings();
 999 }
1000
1001 void MainWindow::padding_toggled(double seconds, bool checked)
1002 {
1003         if (!checked) {
1004                 return;
1005         }
1006         global_flags.cue_point_padding_seconds = seconds;
1007         save_settings();
1008 }
1009
1010 void MainWindow::highlight_camera_input(int stream_idx)
1011 {
1012         for (unsigned i = 0; i < num_cameras; ++i) {
1013                 if (unsigned(stream_idx) == i) {
1014                         displays[i].frame->setStyleSheet("background: rgb(0,255,0)");
1015                 } else {
1016                         displays[i].frame->setStyleSheet("");
1017                 }
1018         }
1019 }
1020
1021 void MainWindow::set_output_status(const string &status)
1022 {
1023         ui->live_label->setText(QString::fromStdString("Current output (" + status + ")"));
1024         if (live_player != nullptr) {
1025                 live_player->set_pause_status(status);
1026         }
1027
1028         lock_guard<mutex> lock(queue_status_mu);
1029         queue_status = status;
1030 }
1031
1032 pair<string, string> MainWindow::get_queue_status() const
1033 {
1034         lock_guard<mutex> lock(queue_status_mu);
1035         return { queue_status, "text/plain" };
1036 }
1037
1038 void MainWindow::display_frame(unsigned stream_idx, const FrameOnDisk &frame)
1039 {
1040         if (stream_idx >= MAX_STREAMS) {
1041                 fprintf(stderr, "WARNING: Ignoring too-high stream index %u.\n", stream_idx);
1042                 return;
1043         }
1044         if (stream_idx >= num_cameras) {
1045                 post_to_main_thread_and_wait([this, stream_idx] {
1046                         num_cameras = stream_idx + 1;
1047                         change_num_cameras();
1048                 });
1049         }
1050         displays[stream_idx].display->setFrame(stream_idx, frame);
1051 }
1052
1053 template<class Model>
1054 void MainWindow::replace_model(QTableView *view, Model **model, Model *new_model)
1055 {
1056         QItemSelectionModel *old_selection_model = view->selectionModel();
1057         view->setModel(new_model);
1058         delete *model;
1059         delete old_selection_model;
1060         *model = new_model;
1061         connect(new_model, &Model::any_content_changed, this, &MainWindow::content_changed);
1062 }
1063
1064 void MainWindow::start_tally()
1065 {
1066         http_reply = http.get(QNetworkRequest(QString::fromStdString(global_flags.tally_url)));
1067         connect(http_reply, &QNetworkReply::finished, this, &MainWindow::tally_received);
1068 }
1069
1070 void MainWindow::tally_received()
1071 {
1072         unsigned time_to_next_tally_ms;
1073         if (http_reply->error()) {
1074                 fprintf(stderr, "HTTP get of '%s' failed: %s\n", global_flags.tally_url.c_str(),
1075                         http_reply->errorString().toStdString().c_str());
1076                 ui->live_frame->setStyleSheet("");
1077                 time_to_next_tally_ms = 1000;
1078         } else {
1079                 string contents = http_reply->readAll().toStdString();
1080                 ui->live_frame->setStyleSheet(QString::fromStdString("background: " + contents));
1081                 time_to_next_tally_ms = 100;
1082         }
1083         http_reply->deleteLater();
1084         http_reply = nullptr;
1085
1086         QTimer::singleShot(time_to_next_tally_ms, this, &MainWindow::start_tally);
1087 }