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 "futatabi_midi_mapping.pb.h"
   9 #include "shared/aboutdialog.h"
  10 #include "shared/disk_space_estimator.h"
  11 #include "shared/post_to_main_thread.h"
  12 #include "shared/timebase.h"
  13 #include "ui_mainwindow.h"
  14
  15 #include <QDesktopServices>
  16 #include <QFileDialog>
  17 #include <QMessageBox>
  18 #include <QMouseEvent>
  19 #include <QNetworkReply>
  20 #include <QShortcut>
  21 #include <QTimer>
  22 #include <QWheelEvent>
  23 #include <future>
  24 #include <sqlite3.h>
  25 #include <string>
  26 #include <vector>
  27
  28 using namespace std;
  29 using namespace std::placeholders;
  30
  31 MainWindow *global_mainwindow = nullptr;
  32 static ClipList *cliplist_clips;
  33 static PlayList *playlist_clips;
  34
  35 extern int64_t current_pts;
  36
  37 namespace {
  38
  39 void set_pts_in(int64_t pts, int64_t current_pts, ClipProxy &clip)
  40 {
  41         pts = std::max<int64_t>(pts, 0);
  42         if (clip->pts_out == -1) {
  43                 pts = std::min(pts, current_pts);
  44         } else {
  45                 pts = std::min(pts, clip->pts_out);
  46         }
  47         clip->pts_in = pts;
  48 }
  49
  50 }  // namespace
  51
  52 MainWindow::MainWindow()
  53         : ui(new Ui::MainWindow),
  54           db(global_flags.working_directory + "/futatabi.db"),
  55           midi_mapper(this)
  56 {
  57         global_mainwindow = this;
  58         ui->setupUi(this);
  59
  60         // Load settings from database.
  61         SettingsProto settings = db.get_settings();
  62         if (!global_flags.interpolation_quality_set) {
  63                 if (settings.interpolation_quality() != 0) {
  64                         global_flags.interpolation_quality = settings.interpolation_quality() - 1;
  65                 }
  66         }
  67         if (!global_flags.cue_point_padding_set) {
  68                 global_flags.cue_point_padding_seconds = settings.cue_point_padding_seconds();  // Default 0 is fine.
  69         }
  70         if (global_flags.interpolation_quality == 0) {
  71                 // Allocate something just for simplicity; we won't be using it
  72                 // unless the user changes runtime, in which case 1 is fine.
  73                 flow_initialized_interpolation_quality = 1;
  74         } else {
  75                 flow_initialized_interpolation_quality = global_flags.interpolation_quality;
  76         }
  77         save_settings();
  78
  79         // The menus.
  80         connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
  81         connect(ui->export_cliplist_clip_multitrack_action, &QAction::triggered, this, &MainWindow::export_cliplist_clip_multitrack_triggered);
  82         connect(ui->export_playlist_clip_interpolated_action, &QAction::triggered, this, &MainWindow::export_playlist_clip_interpolated_triggered);
  83         connect(ui->manual_action, &QAction::triggered, this, &MainWindow::manual_triggered);
  84         connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered);
  85         connect(ui->undo_action, &QAction::triggered, this, &MainWindow::undo_triggered);
  86         connect(ui->redo_action, &QAction::triggered, this, &MainWindow::redo_triggered);
  87         ui->undo_action->setEnabled(false);
  88         ui->redo_action->setEnabled(false);
  89
  90         // The quality group.
  91         QActionGroup *quality_group = new QActionGroup(ui->interpolation_menu);
  92         quality_group->addAction(ui->quality_0_action);
  93         quality_group->addAction(ui->quality_1_action);
  94         quality_group->addAction(ui->quality_2_action);
  95         quality_group->addAction(ui->quality_3_action);
  96         quality_group->addAction(ui->quality_4_action);
  97         if (global_flags.interpolation_quality == 0) {
  98                 ui->quality_0_action->setChecked(true);
  99         } else if (global_flags.interpolation_quality == 1) {
 100                 ui->quality_1_action->setChecked(true);
 101         } else if (global_flags.interpolation_quality == 2) {
 102                 ui->quality_2_action->setChecked(true);
 103         } else if (global_flags.interpolation_quality == 3) {
 104                 ui->quality_3_action->setChecked(true);
 105         } else if (global_flags.interpolation_quality == 4) {
 106                 ui->quality_4_action->setChecked(true);
 107         } else {
 108                 assert(false);
 109         }
 110         connect(ui->quality_0_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 0, _1));
 111         connect(ui->quality_1_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 1, _1));
 112         connect(ui->quality_2_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 2, _1));
 113         connect(ui->quality_3_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 3, _1));
 114         connect(ui->quality_4_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 4, _1));
 115
 116         // The cue point padding group.
 117         QActionGroup *padding_group = new QActionGroup(ui->interpolation_menu);
 118         padding_group->addAction(ui->padding_0_action);
 119         padding_group->addAction(ui->padding_1_action);
 120         padding_group->addAction(ui->padding_2_action);
 121         padding_group->addAction(ui->padding_5_action);
 122         if (global_flags.cue_point_padding_seconds <= 1e-3) {
 123                 ui->padding_0_action->setChecked(true);
 124         } else if (fabs(global_flags.cue_point_padding_seconds - 1.0) < 1e-3) {
 125                 ui->padding_1_action->setChecked(true);
 126         } else if (fabs(global_flags.cue_point_padding_seconds - 2.0) < 1e-3) {
 127                 ui->padding_2_action->setChecked(true);
 128         } else if (fabs(global_flags.cue_point_padding_seconds - 5.0) < 1e-3) {
 129                 ui->padding_5_action->setChecked(true);
 130         } else {
 131                 // Nothing to check, which is fine.
 132         }
 133         connect(ui->padding_0_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 0.0, _1));
 134         connect(ui->padding_1_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 1.0, _1));
 135         connect(ui->padding_2_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 2.0, _1));
 136         connect(ui->padding_5_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 5.0, _1));
 137
 138         global_disk_space_estimator = new DiskSpaceEstimator(bind(&MainWindow::report_disk_space, this, _1, _2));
 139         disk_free_label = new QLabel(this);
 140         disk_free_label->setStyleSheet("QLabel {padding-right: 5px;}");
 141         ui->menuBar->setCornerWidget(disk_free_label);
 142
 143         StateProto state = db.get_state();
 144         undo_stack.push_back(state);  // The undo stack always has the current state on top.
 145
 146         cliplist_clips = new ClipList(state.clip_list());
 147         ui->clip_list->setModel(cliplist_clips);
 148         connect(cliplist_clips, &ClipList::any_content_changed, this, &MainWindow::content_changed);
 149
 150         playlist_clips = new PlayList(state.play_list());
 151         ui->playlist->setModel(playlist_clips);
 152         connect(playlist_clips, &PlayList::any_content_changed, this, &MainWindow::content_changed);
 153
 154         // For un-highlighting when we lose focus.
 155         ui->clip_list->installEventFilter(this);
 156
 157         // For scrubbing in the pts columns.
 158         ui->clip_list->viewport()->installEventFilter(this);
 159         ui->playlist->viewport()->installEventFilter(this);
 160
 161         QShortcut *cue_in = new QShortcut(QKeySequence(Qt::Key_A), this);
 162         connect(cue_in, &QShortcut::activated, ui->cue_in_btn, &QPushButton::click);
 163         connect(ui->cue_in_btn, &QPushButton::clicked, this, &MainWindow::cue_in_clicked);
 164
 165         QShortcut *cue_out = new QShortcut(QKeySequence(Qt::Key_S), this);
 166         connect(cue_out, &QShortcut::activated, ui->cue_out_btn, &QPushButton::click);
 167         connect(ui->cue_out_btn, &QPushButton::clicked, this, &MainWindow::cue_out_clicked);
 168
 169         QShortcut *queue = new QShortcut(QKeySequence(Qt::Key_Q), this);
 170         connect(queue, &QShortcut::activated, ui->queue_btn, &QPushButton::click);
 171         connect(ui->queue_btn, &QPushButton::clicked, this, &MainWindow::queue_clicked);
 172
 173         QShortcut *preview = new QShortcut(QKeySequence(Qt::Key_W), this);
 174         connect(preview, &QShortcut::activated, ui->preview_btn, &QPushButton::click);
 175         connect(ui->preview_btn, &QPushButton::clicked, this, &MainWindow::preview_clicked);
 176
 177         QShortcut *play = new QShortcut(QKeySequence(Qt::Key_Space), this);
 178         connect(play, &QShortcut::activated, ui->play_btn, &QPushButton::click);
 179         connect(ui->play_btn, &QPushButton::clicked, this, &MainWindow::play_clicked);
 180
 181         connect(ui->stop_btn, &QPushButton::clicked, this, &MainWindow::stop_clicked);
 182         ui->stop_btn->setEnabled(false);
 183
 184         connect(ui->playlist_duplicate_btn, &QPushButton::clicked, this, &MainWindow::playlist_duplicate);
 185
 186         connect(ui->playlist_remove_btn, &QPushButton::clicked, this, &MainWindow::playlist_remove);
 187         QShortcut *delete_key = new QShortcut(QKeySequence(Qt::Key_Delete), ui->playlist);
 188         connect(delete_key, &QShortcut::activated, [this] {
 189                 if (ui->playlist->hasFocus()) {
 190                         playlist_remove();
 191                 }
 192         });
 193
 194         // TODO: support drag-and-drop.
 195         connect(ui->playlist_move_up_btn, &QPushButton::clicked, [this] { playlist_move(-1); });
 196         connect(ui->playlist_move_down_btn, &QPushButton::clicked, [this] { playlist_move(1); });
 197
 198         connect(ui->playlist->selectionModel(), &QItemSelectionModel::selectionChanged,
 199                 this, &MainWindow::playlist_selection_changed);
 200         playlist_selection_changed();  // First time set-up.
 201
 202         preview_player.reset(new Player(ui->preview_display, Player::NO_STREAM_OUTPUT));
 203         live_player.reset(new Player(ui->live_display, Player::HTTPD_STREAM_OUTPUT));
 204         live_player->set_done_callback([this] {
 205                 post_to_main_thread([this] {
 206                         live_player_done();
 207                 });
 208         });
 209         live_player->set_progress_callback([this](const map<uint64_t, double> &progress, double time_remaining) {
 210                 post_to_main_thread([this, progress, time_remaining] {
 211                         live_player_clip_progress(progress, time_remaining);
 212                 });
 213         });
 214         set_output_status("paused");
 215         enable_or_disable_queue_button();
 216
 217         defer_timeout = new QTimer(this);
 218         defer_timeout->setSingleShot(true);
 219         connect(defer_timeout, &QTimer::timeout, this, &MainWindow::defer_timer_expired);
 220         ui->undo_action->setEnabled(true);
 221
 222         connect(ui->clip_list->selectionModel(), &QItemSelectionModel::currentChanged,
 223                 this, &MainWindow::clip_list_selection_changed);
 224         enable_or_disable_queue_button();
 225
 226         // Find out how many cameras we have in the existing frames;
 227         // if none, we start with two cameras.
 228         num_cameras = 2;
 229         {
 230                 lock_guard<mutex> lock(frame_mu);
 231                 for (size_t stream_idx = 2; stream_idx < MAX_STREAMS; ++stream_idx) {
 232                         if (!frames[stream_idx].empty()) {
 233                                 num_cameras = stream_idx + 1;
 234                         }
 235                 }
 236         }
 237         change_num_cameras();
 238
 239         if (!global_flags.tally_url.empty()) {
 240                 start_tally();
 241         }
 242
 243         if (!global_flags.midi_mapping_filename.empty()) {
 244                 MIDIMappingProto midi_mapping;
 245                 if (!load_midi_mapping_from_file(global_flags.midi_mapping_filename, &midi_mapping)) {
 246                         fprintf(stderr, "Couldn't load MIDI mapping '%s'; exiting.\n",
 247                                 global_flags.midi_mapping_filename.c_str());
 248                         exit(1);
 249                 }
 250                 midi_mapper.set_midi_mapping(midi_mapping);
 251         }
 252         midi_mapper.refresh_lights();
 253         midi_mapper.start_thread();
 254 }
 255
 256 void MainWindow::change_num_cameras()
 257 {
 258         assert(num_cameras >= displays.size());  // We only add, never remove.
 259
 260         // Make new display rows.
 261         unsigned display_rows = (num_cameras + 1) / 2;
 262         ui->video_displays->setStretch(1, display_rows);
 263         for (unsigned i = displays.size(); i < num_cameras; ++i) {
 264                 QFrame *frame = new QFrame(this);
 265                 frame->setAutoFillBackground(true);
 266
 267                 QLayout *layout = new QGridLayout(frame);
 268                 frame->setLayout(layout);
 269                 layout->setContentsMargins(3, 3, 3, 3);
 270
 271                 JPEGFrameView *display = new JPEGFrameView(frame);
 272                 display->setAutoFillBackground(true);
 273                 layout->addWidget(display);
 274
 275                 ui->input_displays->addWidget(frame, i / 2, i % 2);
 276                 display->set_overlay(to_string(i + 1));
 277
 278                 QPushButton *preview_btn = new QPushButton(this);
 279                 preview_btn->setMaximumSize(20, 17);
 280                 preview_btn->setText(QString::fromStdString(to_string(i + 1)));
 281                 ui->preview_layout->addWidget(preview_btn);
 282
 283                 displays.emplace_back(FrameAndDisplay{ frame, display, preview_btn });
 284
 285                 connect(display, &JPEGFrameView::clicked, preview_btn, &QPushButton::click);
 286                 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
 287                 connect(shortcut, &QShortcut::activated, preview_btn, &QPushButton::click);
 288
 289                 connect(preview_btn, &QPushButton::clicked, [this, i] { preview_angle_clicked(i); });
 290         }
 291
 292         cliplist_clips->change_num_cameras(num_cameras);
 293         playlist_clips->change_num_cameras(num_cameras);
 294
 295         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 296 }
 297
 298 MainWindow::~MainWindow()
 299 {
 300         // Empty so that we can forward-declare Player in the .h file.
 301 }
 302
 303 void MainWindow::cue_in_clicked()
 304 {
 305         if (!cliplist_clips->empty() && cliplist_clips->back()->pts_out < 0) {
 306                 cliplist_clips->mutable_back()->pts_in = current_pts;
 307         } else {
 308                 Clip clip;
 309                 clip.pts_in = max<int64_t>(current_pts - lrint(global_flags.cue_point_padding_seconds * TIMEBASE), 0);
 310                 cliplist_clips->add_clip(clip);
 311                 playlist_selection_changed();
 312         }
 313
 314         // Select the item so that we can jog it.
 315         ui->clip_list->setFocus();
 316         QModelIndex index = cliplist_clips->index(cliplist_clips->size() - 1, int(ClipList::Column::IN));
 317         ui->clip_list->selectionModel()->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect);
 318         ui->clip_list->scrollToBottom();
 319         enable_or_disable_queue_button();
 320 }
 321
 322 void MainWindow::cue_out_clicked()
 323 {
 324         if (cliplist_clips->empty()) {
 325                 return;
 326         }
 327
 328         cliplist_clips->mutable_back()->pts_out = current_pts + lrint(global_flags.cue_point_padding_seconds * TIMEBASE);
 329
 330         // Select the item so that we can jog it.
 331         ui->clip_list->setFocus();
 332         QModelIndex index = cliplist_clips->index(cliplist_clips->size() - 1, int(ClipList::Column::OUT));
 333         ui->clip_list->selectionModel()->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect);
 334         ui->clip_list->scrollToBottom();
 335         enable_or_disable_queue_button();
 336 }
 337
 338 void MainWindow::queue_clicked()
 339 {
 340         // See also enable_or_disable_queue_button().
 341
 342         if (cliplist_clips->empty()) {
 343                 return;
 344         }
 345
 346         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 347         if (!selected->hasSelection()) {
 348                 Clip clip = *cliplist_clips->back();
 349                 clip.stream_idx = 0;
 350                 if (clip.pts_out != -1) {
 351                         playlist_clips->add_clip(clip);
 352                         playlist_selection_changed();
 353                         ui->playlist->scrollToBottom();
 354                 }
 355                 return;
 356         }
 357
 358         QModelIndex index = selected->currentIndex();
 359         Clip clip = *cliplist_clips->clip(index.row());
 360         if (cliplist_clips->is_camera_column(index.column())) {
 361                 clip.stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 362         } else {
 363                 clip.stream_idx = ui->preview_display->get_stream_idx();
 364         }
 365
 366         if (clip.pts_out != -1) {
 367                 playlist_clips->add_clip(clip);
 368                 playlist_selection_changed();
 369                 ui->playlist->scrollToBottom();
 370                 if (!ui->playlist->selectionModel()->hasSelection()) {
 371                         // TODO: Figure out why this doesn't always seem to actually select the row.
 372                         QModelIndex bottom = playlist_clips->index(playlist_clips->size() - 1, 0);
 373                         ui->playlist->setCurrentIndex(bottom);
 374                 }
 375         }
 376 }
 377
 378 void MainWindow::preview_clicked()
 379 {
 380         // See also enable_or_disable_preview_button().
 381
 382         if (ui->playlist->hasFocus()) {
 383                 // Allow the playlist as preview iff it has focus and something is selected.
 384                 QItemSelectionModel *selected = ui->playlist->selectionModel();
 385                 if (selected->hasSelection()) {
 386                         QModelIndex index = selected->currentIndex();
 387                         const Clip &clip = *playlist_clips->clip(index.row());
 388                         preview_player->play(clip);
 389                         return;
 390                 }
 391         }
 392
 393         if (cliplist_clips->empty())
 394                 return;
 395
 396         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 397         if (!selected->hasSelection()) {
 398                 preview_player->play(*cliplist_clips->back());
 399                 return;
 400         }
 401
 402         QModelIndex index = selected->currentIndex();
 403         Clip clip = *cliplist_clips->clip(index.row());
 404         if (cliplist_clips->is_camera_column(index.column())) {
 405                 clip.stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 406         } else {
 407                 clip.stream_idx = ui->preview_display->get_stream_idx();
 408         }
 409         preview_player->play(clip);
 410 }
 411
 412 void MainWindow::preview_angle_clicked(unsigned stream_idx)
 413 {
 414         preview_player->override_angle(stream_idx);
 415
 416         // Change the selection if we were previewing a clip from the clip list.
 417         // (The only other thing we could be showing is a pts scrub, and if so,
 418         // that would be selected.)
 419         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 420         if (selected->hasSelection()) {
 421                 QModelIndex cell = selected->selectedIndexes()[0];
 422                 int column = int(ClipList::Column::CAMERA_1) + stream_idx;
 423                 selected->setCurrentIndex(cell.sibling(cell.row(), column), QItemSelectionModel::ClearAndSelect);
 424         }
 425 }
 426
 427 void MainWindow::playlist_duplicate()
 428 {
 429         QItemSelectionModel *selected = ui->playlist->selectionModel();
 430         if (!selected->hasSelection()) {
 431                 // Should have been grayed out, but OK.
 432                 return;
 433         }
 434         QModelIndexList rows = selected->selectedRows();
 435         int first = rows.front().row(), last = rows.back().row();
 436         playlist_clips->duplicate_clips(first, last);
 437         playlist_selection_changed();
 438 }
 439
 440 void MainWindow::playlist_remove()
 441 {
 442         QItemSelectionModel *selected = ui->playlist->selectionModel();
 443         if (!selected->hasSelection()) {
 444                 // Should have been grayed out, but OK.
 445                 return;
 446         }
 447         QModelIndexList rows = selected->selectedRows();
 448         int first = rows.front().row(), last = rows.back().row();
 449         playlist_clips->erase_clips(first, last);
 450
 451         // TODO: select the next one in the list?
 452
 453         playlist_selection_changed();
 454 }
 455
 456 void MainWindow::playlist_move(int delta)
 457 {
 458         QItemSelectionModel *selected = ui->playlist->selectionModel();
 459         if (!selected->hasSelection()) {
 460                 // Should have been grayed out, but OK.
 461                 return;
 462         }
 463
 464         QModelIndexList rows = selected->selectedRows();
 465         int first = rows.front().row(), last = rows.back().row();
 466         if ((delta == -1 && first == 0) ||
 467             (delta == 1 && size_t(last) == playlist_clips->size() - 1)) {
 468                 // Should have been grayed out, but OK.
 469                 return;
 470         }
 471
 472         playlist_clips->move_clips(first, last, delta);
 473         playlist_selection_changed();
 474 }
 475
 476 void MainWindow::jog_internal(JogDestination jog_destination, int row, int column, int stream_idx, int pts_delta)
 477 {
 478         constexpr int camera_pts_per_pixel = 1500;  // One click of most mice (15 degrees), multiplied by the default wheel_sensitivity.
 479
 480         int in_column, out_column, camera_column;
 481         if (jog_destination == JOG_CLIP_LIST) {
 482                 in_column = int(ClipList::Column::IN);
 483                 out_column = int(ClipList::Column::OUT);
 484                 camera_column = -1;
 485         } else if (jog_destination == JOG_PLAYLIST) {
 486                 in_column = int(PlayList::Column::IN);
 487                 out_column = int(PlayList::Column::OUT);
 488                 camera_column = int(PlayList::Column::CAMERA);
 489         } else {
 490                 assert(false);
 491         }
 492
 493         currently_deferring_model_changes = true;
 494         {
 495                 current_change_id = (jog_destination == JOG_CLIP_LIST) ? "cliplist:" : "playlist:";
 496                 ClipProxy clip = (jog_destination == JOG_CLIP_LIST) ? cliplist_clips->mutable_clip(row) : playlist_clips->mutable_clip(row);
 497                 if (jog_destination == JOG_PLAYLIST) {
 498                         stream_idx = clip->stream_idx;
 499                 }
 500
 501                 if (column == in_column) {
 502                         current_change_id += "in:" + to_string(row);
 503                         int64_t pts = clip->pts_in + pts_delta;
 504                         set_pts_in(pts, current_pts, clip);
 505                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 506                 } else if (column == out_column) {
 507                         current_change_id += "out:" + to_string(row);
 508                         int64_t pts = clip->pts_out + pts_delta;
 509                         pts = std::max(pts, clip->pts_in);
 510                         pts = std::min(pts, current_pts);
 511                         clip->pts_out = pts;
 512                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 513                 } else if (column == camera_column) {
 514                         current_change_id += "camera:" + to_string(row);
 515                         int angle_degrees = pts_delta;
 516                         if (last_mousewheel_camera_row == row) {
 517                                 angle_degrees += leftover_angle_degrees;
 518                         }
 519
 520                         int stream_idx = clip->stream_idx + angle_degrees / camera_pts_per_pixel;
 521                         stream_idx = std::max(stream_idx, 0);
 522                         stream_idx = std::min<int>(stream_idx, num_cameras - 1);
 523                         clip->stream_idx = stream_idx;
 524
 525                         last_mousewheel_camera_row = row;
 526                         leftover_angle_degrees = angle_degrees % camera_pts_per_pixel;
 527
 528                         // Don't update the live view, that's rarely what the operator wants.
 529                 }
 530         }
 531         currently_deferring_model_changes = false;
 532 }
 533
 534 void MainWindow::defer_timer_expired()
 535 {
 536         state_changed(deferred_state);
 537 }
 538
 539 void MainWindow::content_changed()
 540 {
 541         // If we are playing, update the part of the playlist that's not playing yet.
 542         vector<ClipWithID> clips;
 543         for (unsigned row = 0; row < playlist_clips->size(); ++row) {
 544                 clips.emplace_back(*playlist_clips->clip_with_id(row));
 545         }
 546         live_player->splice_play(clips);
 547
 548         // Serialize the state.
 549         if (defer_timeout->isActive() &&
 550             (!currently_deferring_model_changes || deferred_change_id != current_change_id)) {
 551                 // There's some deferred event waiting, but this event is unrelated.
 552                 // So it's time to short-circuit that timer and do the work it wanted to do.
 553                 defer_timeout->stop();
 554                 state_changed(deferred_state);
 555         }
 556         StateProto state;
 557         *state.mutable_clip_list() = cliplist_clips->serialize();
 558         *state.mutable_play_list() = playlist_clips->serialize();
 559         if (currently_deferring_model_changes) {
 560                 deferred_change_id = current_change_id;
 561                 deferred_state = std::move(state);
 562                 defer_timeout->start(200);
 563                 return;
 564         }
 565         state_changed(state);
 566 }
 567
 568 void MainWindow::state_changed(const StateProto &state)
 569 {
 570         db.store_state(state);
 571
 572         redo_stack.clear();
 573         ui->redo_action->setEnabled(false);
 574
 575         undo_stack.push_back(state);
 576         ui->undo_action->setEnabled(undo_stack.size() > 1);
 577
 578         // Make sure it doesn't grow without bounds.
 579         while (undo_stack.size() >= 100) {
 580                 undo_stack.pop_front();
 581         }
 582 }
 583
 584 void MainWindow::save_settings()
 585 {
 586         SettingsProto settings;
 587         settings.set_interpolation_quality(global_flags.interpolation_quality + 1);
 588         settings.set_cue_point_padding_seconds(global_flags.cue_point_padding_seconds);
 589         db.store_settings(settings);
 590 }
 591
 592 void MainWindow::play_clicked()
 593 {
 594         if (playlist_clips->empty())
 595                 return;
 596
 597         QItemSelectionModel *selected = ui->playlist->selectionModel();
 598         unsigned start_row;
 599         if (!selected->hasSelection()) {
 600                 start_row = 0;
 601         } else {
 602                 start_row = selected->selectedRows(0)[0].row();
 603         }
 604
 605         vector<ClipWithID> clips;
 606         for (unsigned row = start_row; row < playlist_clips->size(); ++row) {
 607                 clips.emplace_back(*playlist_clips->clip_with_id(row));
 608         }
 609         live_player->play(clips);
 610         playlist_clips->set_progress({ { start_row, 0.0f } });
 611         ui->playlist->selectionModel()->clear();
 612         playlist_selection_changed();
 613
 614         ui->stop_btn->setEnabled(true);
 615 }
 616
 617 void MainWindow::stop_clicked()
 618 {
 619         Clip fake_clip;
 620         fake_clip.pts_in = 0;
 621         fake_clip.pts_out = 0;
 622         playlist_clips->set_progress({});
 623         live_player->play(fake_clip);
 624         ui->stop_btn->setEnabled(false);
 625 }
 626
 627 void MainWindow::live_player_done()
 628 {
 629         playlist_selection_changed();
 630         playlist_clips->set_progress({});
 631         ui->stop_btn->setEnabled(false);
 632 }
 633
 634 void MainWindow::live_player_clip_progress(const map<uint64_t, double> &progress, double time_remaining)
 635 {
 636         playlist_clips->set_progress(progress);
 637         set_output_status(format_duration(time_remaining) + " left");
 638 }
 639
 640 void MainWindow::resizeEvent(QResizeEvent *event)
 641 {
 642         QMainWindow::resizeEvent(event);
 643
 644         // Ask for a relayout, but only after the event loop is done doing relayout
 645         // on everything else.
 646         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 647 }
 648
 649 void MainWindow::relayout()
 650 {
 651         ui->live_display->setMinimumWidth(ui->live_display->height() * 16 / 9);
 652         ui->preview_display->setMinimumWidth(ui->preview_display->height() * 16 / 9);
 653 }
 654
 655 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 656 {
 657         constexpr int dead_zone_pixels = 3;  // To avoid that simple clicks get misinterpreted.
 658         int scrub_sensitivity = 100;  // pts units per pixel.
 659         int wheel_sensitivity = 100;  // pts units per degree.
 660
 661         if (event->type() == QEvent::FocusIn || event->type() == QEvent::FocusOut) {
 662                 enable_or_disable_preview_button();
 663                 hidden_jog_column = -1;
 664         }
 665
 666         unsigned stream_idx = ui->preview_display->get_stream_idx();
 667
 668         if (watched == ui->clip_list) {
 669                 if (event->type() == QEvent::FocusOut) {
 670                         highlight_camera_input(-1);
 671                 }
 672                 return false;
 673         }
 674
 675         if (event->type() != QEvent::Wheel) {
 676                 last_mousewheel_camera_row = -1;
 677         }
 678
 679         if (event->type() == QEvent::MouseButtonPress) {
 680                 QMouseEvent *mouse = (QMouseEvent *)event;
 681
 682                 QTableView *destination;
 683                 ScrubType type;
 684
 685                 if (watched == ui->clip_list->viewport()) {
 686                         destination = ui->clip_list;
 687                         type = SCRUBBING_CLIP_LIST;
 688                 } else if (watched == ui->playlist->viewport()) {
 689                         destination = ui->playlist;
 690                         type = SCRUBBING_PLAYLIST;
 691                 } else {
 692                         return false;
 693                 }
 694                 int column = destination->columnAt(mouse->x());
 695                 int row = destination->rowAt(mouse->y());
 696                 if (column == -1 || row == -1)
 697                         return false;
 698
 699                 if (type == SCRUBBING_CLIP_LIST) {
 700                         if (ClipList::Column(column) == ClipList::Column::IN) {
 701                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_in;
 702                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 703                         } else if (ClipList::Column(column) == ClipList::Column::OUT) {
 704                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_out;
 705                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 706                         } else {
 707                                 return false;
 708                         }
 709                 } else {
 710                         if (PlayList::Column(column) == PlayList::Column::IN) {
 711                                 scrub_pts_origin = playlist_clips->clip(row)->pts_in;
 712                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 713                         } else if (PlayList::Column(column) == PlayList::Column::OUT) {
 714                                 scrub_pts_origin = playlist_clips->clip(row)->pts_out;
 715                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 716                         } else {
 717                                 return false;
 718                         }
 719                 }
 720
 721                 scrubbing = true;
 722                 scrub_row = row;
 723                 scrub_column = column;
 724                 scrub_x_origin = mouse->x();
 725                 scrub_type = type;
 726         } else if (event->type() == QEvent::MouseMove) {
 727                 QMouseEvent *mouse = (QMouseEvent *)event;
 728                 if (mouse->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 729                         scrub_sensitivity *= 10;
 730                         wheel_sensitivity *= 10;
 731                 }
 732                 if (mouse->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 733                         scrub_sensitivity /= 10;
 734                         wheel_sensitivity /= 10;
 735                 }
 736                 if (scrubbing) {
 737                         int offset = mouse->x() - scrub_x_origin;
 738                         int adjusted_offset;
 739                         if (offset >= dead_zone_pixels) {
 740                                 adjusted_offset = offset - dead_zone_pixels;
 741                         } else if (offset < -dead_zone_pixels) {
 742                                 adjusted_offset = offset + dead_zone_pixels;
 743                         } else {
 744                                 adjusted_offset = 0;
 745                         }
 746
 747                         int64_t pts = scrub_pts_origin + adjusted_offset * scrub_sensitivity;
 748                         currently_deferring_model_changes = true;
 749                         if (scrub_type == SCRUBBING_CLIP_LIST) {
 750                                 ClipProxy clip = cliplist_clips->mutable_clip(scrub_row);
 751                                 if (scrub_column == int(ClipList::Column::IN)) {
 752                                         current_change_id = "cliplist:in:" + to_string(scrub_row);
 753                                         set_pts_in(pts, current_pts, clip);
 754                                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 755                                 } else {
 756                                         current_change_id = "cliplist:out" + to_string(scrub_row);
 757                                         pts = std::max(pts, clip->pts_in);
 758                                         pts = std::min(pts, current_pts);
 759                                         clip->pts_out = pts;
 760                                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 761                                 }
 762                         } else {
 763                                 ClipProxy clip = playlist_clips->mutable_clip(scrub_row);
 764                                 if (scrub_column == int(PlayList::Column::IN)) {
 765                                         current_change_id = "playlist:in:" + to_string(scrub_row);
 766                                         set_pts_in(pts, current_pts, clip);
 767                                         preview_single_frame(pts, clip->stream_idx, FIRST_AT_OR_AFTER);
 768                                 } else {
 769                                         current_change_id = "playlist:out:" + to_string(scrub_row);
 770                                         pts = std::max(pts, clip->pts_in);
 771                                         pts = std::min(pts, current_pts);
 772                                         clip->pts_out = pts;
 773                                         preview_single_frame(pts, clip->stream_idx, LAST_BEFORE);
 774                                 }
 775                         }
 776                         currently_deferring_model_changes = false;
 777
 778                         return true;  // Don't use this mouse movement for selecting things.
 779                 }
 780         } else if (event->type() == QEvent::Wheel) {
 781                 QWheelEvent *wheel = (QWheelEvent *)event;
 782                 int angle_delta = wheel->angleDelta().y();
 783                 if (wheel->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 784                         scrub_sensitivity *= 10;
 785                         wheel_sensitivity *= 10;
 786                 }
 787                 if (wheel->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 788                         scrub_sensitivity /= 10;
 789                         wheel_sensitivity /= 10;
 790                         angle_delta = wheel->angleDelta().x();  // Qt ickiness.
 791                 }
 792
 793                 QTableView *destination;
 794                 JogDestination jog_destination;
 795                 if (watched == ui->clip_list->viewport()) {
 796                         destination = ui->clip_list;
 797                         jog_destination = JOG_CLIP_LIST;
 798                         last_mousewheel_camera_row = -1;
 799                 } else if (watched == ui->playlist->viewport()) {
 800                         destination = ui->playlist;
 801                         jog_destination = JOG_PLAYLIST;
 802                         if (destination->columnAt(wheel->x()) != int(PlayList::Column::CAMERA)) {
 803                                 last_mousewheel_camera_row = -1;
 804                         }
 805                 } else {
 806                         last_mousewheel_camera_row = -1;
 807                         return false;
 808                 }
 809
 810                 int column = destination->columnAt(wheel->x());
 811                 int row = destination->rowAt(wheel->y());
 812                 if (column == -1 || row == -1)
 813                         return false;
 814
 815                 // Only adjust pts with the wheel if the given row is selected.
 816                 if (!destination->hasFocus() ||
 817                     row != destination->selectionModel()->currentIndex().row()) {
 818                         return false;
 819                 }
 820
 821                 jog_internal(jog_destination, row, column, stream_idx, angle_delta * wheel_sensitivity);
 822                 return true;  // Don't scroll.
 823         } else if (event->type() == QEvent::MouseButtonRelease) {
 824                 scrubbing = false;
 825         }
 826         return false;
 827 }
 828
 829 void MainWindow::preview_single_frame(int64_t pts, unsigned stream_idx, MainWindow::Rounding rounding)
 830 {
 831         if (rounding == LAST_BEFORE) {
 832                 lock_guard<mutex> lock(frame_mu);
 833                 if (frames[stream_idx].empty())
 834                         return;
 835                 auto it = find_last_frame_before(frames[stream_idx], pts);
 836                 if (it != frames[stream_idx].end()) {
 837                         pts = it->pts;
 838                 }
 839         } else {
 840                 assert(rounding == FIRST_AT_OR_AFTER);
 841                 lock_guard<mutex> lock(frame_mu);
 842                 if (frames[stream_idx].empty())
 843                         return;
 844                 auto it = find_first_frame_at_or_after(frames[stream_idx], pts);
 845                 if (it != frames[stream_idx].end()) {
 846                         pts = it->pts;
 847                 }
 848         }
 849
 850         Clip fake_clip;
 851         fake_clip.pts_in = pts;
 852         fake_clip.pts_out = pts + 1;
 853         fake_clip.stream_idx = stream_idx;
 854         preview_player->play(fake_clip);
 855 }
 856
 857 void MainWindow::playlist_selection_changed()
 858 {
 859         enable_or_disable_preview_button();
 860
 861         QItemSelectionModel *selected = ui->playlist->selectionModel();
 862         bool any_selected = selected->hasSelection();
 863         ui->playlist_duplicate_btn->setEnabled(any_selected);
 864         ui->playlist_remove_btn->setEnabled(any_selected);
 865         ui->playlist_move_up_btn->setEnabled(
 866                 any_selected && selected->selectedRows().front().row() > 0);
 867         ui->playlist_move_down_btn->setEnabled(
 868                 any_selected && selected->selectedRows().back().row() < int(playlist_clips->size()) - 1);
 869
 870         ui->play_btn->setEnabled(!playlist_clips->empty());
 871         midi_mapper.set_play_enabled(!playlist_clips->empty());
 872
 873         if (!any_selected) {
 874                 set_output_status("paused");
 875         } else {
 876                 vector<ClipWithID> clips;
 877                 for (size_t row = selected->selectedRows().front().row(); row < playlist_clips->size(); ++row) {
 878                         clips.emplace_back(*playlist_clips->clip_with_id(row));
 879                 }
 880                 double remaining = compute_total_time(clips);
 881                 set_output_status(format_duration(remaining) + " ready");
 882         }
 883 }
 884
 885 void MainWindow::clip_list_selection_changed(const QModelIndex &current, const QModelIndex &previous)
 886 {
 887         int camera_selected = -1;
 888         if (cliplist_clips->is_camera_column(current.column())) {
 889                 camera_selected = current.column() - int(ClipList::Column::CAMERA_1);
 890
 891                 // See the comment on hidden_jog_column.
 892                 if (current.row() != previous.row()) {
 893                         hidden_jog_column = -1;
 894                 } else if (hidden_jog_column == -1) {
 895                         hidden_jog_column = previous.column();
 896                 }
 897         } else {
 898                 hidden_jog_column = -1;
 899         }
 900         highlight_camera_input(camera_selected);
 901         enable_or_disable_queue_button();
 902 }
 903
 904 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
 905 {
 906         char time_str[256];
 907         if (estimated_seconds_left < 60.0) {
 908                 strcpy(time_str, "<font color=\"red\">Less than a minute</font>");
 909         } else if (estimated_seconds_left < 1800.0) {  // Less than half an hour: Xm Ys (red).
 910                 int s = lrintf(estimated_seconds_left);
 911                 int m = s / 60;
 912                 s %= 60;
 913                 snprintf(time_str, sizeof(time_str), "<font color=\"red\">%dm %ds</font>", m, s);
 914         } else if (estimated_seconds_left < 3600.0) {  // Less than an hour: Xm.
 915                 int m = lrintf(estimated_seconds_left / 60.0);
 916                 snprintf(time_str, sizeof(time_str), "%dm", m);
 917         } else if (estimated_seconds_left < 36000.0) {  // Less than ten hours: Xh Ym.
 918                 int m = lrintf(estimated_seconds_left / 60.0);
 919                 int h = m / 60;
 920                 m %= 60;
 921                 snprintf(time_str, sizeof(time_str), "%dh %dm", h, m);
 922         } else {  // More than ten hours: Xh.
 923                 int h = lrintf(estimated_seconds_left / 3600.0);
 924                 snprintf(time_str, sizeof(time_str), "%dh", h);
 925         }
 926         char buf[256];
 927         snprintf(buf, sizeof(buf), "Disk free: %'.0f MB (approx. %s)", free_bytes / 1048576.0, time_str);
 928
 929         std::string label = buf;
 930
 931         post_to_main_thread([this, label] {
 932                 disk_free_label->setText(QString::fromStdString(label));
 933                 ui->menuBar->setCornerWidget(disk_free_label);  // Need to set this again for the sizing to get right.
 934         });
 935 }
 936
 937 void MainWindow::exit_triggered()
 938 {
 939         close();
 940 }
 941
 942 void MainWindow::export_cliplist_clip_multitrack_triggered()
 943 {
 944         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 945         if (!selected->hasSelection()) {
 946                 QMessageBox msgbox;
 947                 msgbox.setText("No clip selected in the clip list. Select one and try exporting again.");
 948                 msgbox.exec();
 949                 return;
 950         }
 951
 952         QModelIndex index = selected->currentIndex();
 953         Clip clip = *cliplist_clips->clip(index.row());
 954         QString filename = QFileDialog::getSaveFileName(this,
 955                 "Export multitrack clip", QString(), tr("Matroska video files (*.mkv)"));
 956         if (filename.isNull()) {
 957                 // Cancel.
 958                 return;
 959         }
 960         if (!filename.endsWith(".mkv")) {
 961                 filename += ".mkv";
 962         }
 963         export_multitrack_clip(filename.toStdString(), clip);
 964 }
 965
 966 void MainWindow::export_playlist_clip_interpolated_triggered()
 967 {
 968         QItemSelectionModel *selected = ui->playlist->selectionModel();
 969         if (!selected->hasSelection()) {
 970                 QMessageBox msgbox;
 971                 msgbox.setText("No clip selected in the playlist. Select one and try exporting again.");
 972                 msgbox.exec();
 973                 return;
 974         }
 975
 976         QString filename = QFileDialog::getSaveFileName(this,
 977                 "Export interpolated clip", QString(), tr("Matroska video files (*.mkv)"));
 978         if (filename.isNull()) {
 979                 // Cancel.
 980                 return;
 981         }
 982         if (!filename.endsWith(".mkv")) {
 983                 filename += ".mkv";
 984         }
 985
 986         vector<Clip> clips;
 987         QModelIndexList rows = selected->selectedRows();
 988         for (QModelIndex index : rows) {
 989                 clips.push_back(*playlist_clips->clip(index.row()));
 990         }
 991         export_interpolated_clip(filename.toStdString(), clips);
 992 }
 993
 994 void MainWindow::manual_triggered()
 995 {
 996         if (!QDesktopServices::openUrl(QUrl("https://nageru.sesse.net/doc/"))) {
 997                 QMessageBox msgbox;
 998                 msgbox.setText("Could not launch manual in web browser.\nPlease see https://nageru.sesse.net/doc/ manually.");
 999                 msgbox.exec();
1000         }
1001 }
1002
1003 void MainWindow::about_triggered()
1004 {
1005         AboutDialog("Futatabi", "Multicamera slow motion video server").exec();
1006 }
1007
1008 void MainWindow::undo_triggered()
1009 {
1010         // Finish any deferred action.
1011         if (defer_timeout->isActive()) {
1012                 defer_timeout->stop();
1013                 state_changed(deferred_state);
1014         }
1015
1016         StateProto redo_state;
1017         *redo_state.mutable_clip_list() = cliplist_clips->serialize();
1018         *redo_state.mutable_play_list() = playlist_clips->serialize();
1019         redo_stack.push_back(std::move(redo_state));
1020         ui->redo_action->setEnabled(true);
1021
1022         assert(undo_stack.size() > 1);
1023
1024         // Pop off the current state, which is always at the top of the stack.
1025         undo_stack.pop_back();
1026
1027         StateProto state = undo_stack.back();
1028         ui->undo_action->setEnabled(undo_stack.size() > 1);
1029
1030         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1031         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1032
1033         db.store_state(state);
1034 }
1035
1036 void MainWindow::redo_triggered()
1037 {
1038         assert(!redo_stack.empty());
1039
1040         ui->undo_action->setEnabled(true);
1041         ui->redo_action->setEnabled(true);
1042
1043         undo_stack.push_back(std::move(redo_stack.back()));
1044         redo_stack.pop_back();
1045         ui->undo_action->setEnabled(true);
1046         ui->redo_action->setEnabled(!redo_stack.empty());
1047
1048         const StateProto &state = undo_stack.back();
1049         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1050         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1051
1052         db.store_state(state);
1053 }
1054
1055 void MainWindow::quality_toggled(int quality, bool checked)
1056 {
1057         if (!checked) {
1058                 return;
1059         }
1060         global_flags.interpolation_quality = quality;
1061         if (quality != 0 &&  // Turning interpolation off is always possible.
1062             quality != flow_initialized_interpolation_quality) {
1063                 QMessageBox msgbox;
1064                 msgbox.setText(QString::fromStdString(
1065                         "The interpolation quality for the main output cannot be changed at runtime, "
1066                         "except being turned completely off; it will take effect for exported files "
1067                         "only until next restart. The live output quality thus remains at " +
1068                         to_string(flow_initialized_interpolation_quality) + "."));
1069                 msgbox.exec();
1070         }
1071
1072         save_settings();
1073 }
1074
1075 void MainWindow::padding_toggled(double seconds, bool checked)
1076 {
1077         if (!checked) {
1078                 return;
1079         }
1080         global_flags.cue_point_padding_seconds = seconds;
1081         save_settings();
1082 }
1083
1084 void MainWindow::highlight_camera_input(int stream_idx)
1085 {
1086         for (unsigned i = 0; i < num_cameras; ++i) {
1087                 if (unsigned(stream_idx) == i) {
1088                         displays[i].frame->setStyleSheet("background: rgb(0,255,0)");
1089                 } else {
1090                         displays[i].frame->setStyleSheet("");
1091                 }
1092         }
1093         midi_mapper.highlight_camera_input(stream_idx);
1094 }
1095
1096 void MainWindow::enable_or_disable_preview_button()
1097 {
1098         // Follows the logic in preview_clicked().
1099
1100         if (ui->playlist->hasFocus()) {
1101                 // Allow the playlist as preview iff it has focus and something is selected.
1102                 // TODO: Is this part really relevant?
1103                 QItemSelectionModel *selected = ui->playlist->selectionModel();
1104                 if (selected->hasSelection()) {
1105                         ui->preview_btn->setEnabled(true);
1106                         midi_mapper.set_preview_enabled(true);
1107                         return;
1108                 }
1109         }
1110
1111         // TODO: Perhaps only enable this if something is actually selected.
1112         ui->preview_btn->setEnabled(!cliplist_clips->empty());
1113         midi_mapper.set_preview_enabled(!cliplist_clips->empty());
1114 }
1115
1116 void MainWindow::enable_or_disable_queue_button()
1117 {
1118         // Follows the logic in queue_clicked().
1119         // TODO: Perhaps only enable this if something is actually selected.
1120
1121         bool enabled;
1122
1123         if (cliplist_clips->empty()) {
1124                 enabled = false;
1125         } else {
1126                 QItemSelectionModel *selected = ui->clip_list->selectionModel();
1127                 if (!selected->hasSelection()) {
1128                         Clip clip = *cliplist_clips->back();
1129                         enabled = clip.pts_out != -1;
1130                 } else {
1131                         QModelIndex index = selected->currentIndex();
1132                         Clip clip = *cliplist_clips->clip(index.row());
1133                         enabled = clip.pts_out != -1;
1134                 }
1135         }
1136
1137         ui->queue_btn->setEnabled(enabled);
1138         midi_mapper.set_queue_enabled(enabled);
1139 }
1140
1141 void MainWindow::set_output_status(const string &status)
1142 {
1143         ui->live_label->setText(QString::fromStdString("Current output (" + status + ")"));
1144         if (live_player != nullptr) {
1145                 live_player->set_pause_status(status);
1146         }
1147
1148         lock_guard<mutex> lock(queue_status_mu);
1149         queue_status = status;
1150 }
1151
1152 pair<string, string> MainWindow::get_queue_status() const
1153 {
1154         lock_guard<mutex> lock(queue_status_mu);
1155         return { queue_status, "text/plain" };
1156 }
1157
1158 void MainWindow::display_frame(unsigned stream_idx, const FrameOnDisk &frame)
1159 {
1160         if (stream_idx >= MAX_STREAMS) {
1161                 fprintf(stderr, "WARNING: Ignoring too-high stream index %u.\n", stream_idx);
1162                 return;
1163         }
1164         if (stream_idx >= num_cameras) {
1165                 post_to_main_thread_and_wait([this, stream_idx] {
1166                         num_cameras = stream_idx + 1;
1167                         change_num_cameras();
1168                 });
1169         }
1170         displays[stream_idx].display->setFrame(stream_idx, frame);
1171 }
1172
1173 void MainWindow::preview()
1174 {
1175         post_to_main_thread([this] {
1176                 preview_clicked();
1177         });
1178 }
1179
1180 void MainWindow::queue()
1181 {
1182         post_to_main_thread([this] {
1183                 queue_clicked();
1184         });
1185 }
1186
1187 void MainWindow::play()
1188 {
1189         post_to_main_thread([this] {
1190                 play_clicked();
1191         });
1192 }
1193
1194 void MainWindow::jog(int delta)
1195 {
1196         post_to_main_thread([this, delta] {
1197                 int64_t pts_delta = delta * (TIMEBASE / 60);  // One click = frame at 60 fps.
1198                 if (ui->playlist->hasFocus()) {
1199                         QModelIndex selected = ui->playlist->selectionModel()->currentIndex();
1200                         if (selected.column() != -1 && selected.row() != -1) {
1201                                 jog_internal(JOG_PLAYLIST, selected.row(), selected.column(), /*stream_idx=*/-1, pts_delta);
1202                         }
1203                 } else if (ui->clip_list->hasFocus()) {
1204                         QModelIndex selected = ui->clip_list->selectionModel()->currentIndex();
1205                         if (cliplist_clips->is_camera_column(selected.column()) &&
1206                             hidden_jog_column != -1) {
1207                                 // See the definition on hidden_jog_column.
1208                                 selected = selected.sibling(selected.row(), hidden_jog_column);
1209                                 ui->clip_list->selectionModel()->setCurrentIndex(selected, QItemSelectionModel::ClearAndSelect);
1210                                 hidden_jog_column = -1;
1211                         }
1212                         if (selected.column() != -1 && selected.row() != -1) {
1213                                 jog_internal(JOG_CLIP_LIST, selected.row(), selected.column(), ui->preview_display->get_stream_idx(), pts_delta);
1214                         }
1215                 }
1216         });
1217 }
1218
1219 void MainWindow::switch_camera(unsigned camera_idx)
1220 {
1221         post_to_main_thread([this, camera_idx] {
1222                 if (camera_idx < num_cameras) {  // TODO: Also make this change a highlighted clip?
1223                         preview_angle_clicked(camera_idx);
1224                 }
1225         });
1226 }
1227
1228 void MainWindow::cue_in()
1229 {
1230         post_to_main_thread([this] { cue_in_clicked(); });
1231 }
1232
1233 void MainWindow::cue_out()
1234 {
1235         post_to_main_thread([this] { cue_out_clicked(); });
1236 }
1237
1238 template<class Model>
1239 void MainWindow::replace_model(QTableView *view, Model **model, Model *new_model)
1240 {
1241         QItemSelectionModel *old_selection_model = view->selectionModel();
1242         view->setModel(new_model);
1243         delete *model;
1244         delete old_selection_model;
1245         *model = new_model;
1246         connect(new_model, &Model::any_content_changed, this, &MainWindow::content_changed);
1247 }
1248
1249 void MainWindow::start_tally()
1250 {
1251         http_reply = http.get(QNetworkRequest(QString::fromStdString(global_flags.tally_url)));
1252         connect(http_reply, &QNetworkReply::finished, this, &MainWindow::tally_received);
1253 }
1254
1255 void MainWindow::tally_received()
1256 {
1257         unsigned time_to_next_tally_ms;
1258         if (http_reply->error()) {
1259                 fprintf(stderr, "HTTP get of '%s' failed: %s\n", global_flags.tally_url.c_str(),
1260                         http_reply->errorString().toStdString().c_str());
1261                 ui->live_frame->setStyleSheet("");
1262                 time_to_next_tally_ms = 1000;
1263         } else {
1264                 string contents = http_reply->readAll().toStdString();
1265                 ui->live_frame->setStyleSheet(QString::fromStdString("background: " + contents));
1266                 time_to_next_tally_ms = 100;
1267         }
1268         http_reply->deleteLater();
1269         http_reply = nullptr;
1270
1271         QTimer::singleShot(time_to_next_tally_ms, this, &MainWindow::start_tally);
1272 }