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 "midi_mapping_dialog.h"
  10 #include "shared/aboutdialog.h"
  11 #include "shared/disk_space_estimator.h"
  12 #include "shared/post_to_main_thread.h"
  13 #include "shared/timebase.h"
  14 #include "ui_mainwindow.h"
  15
  16 #include <QDesktopServices>
  17 #include <QFileDialog>
  18 #include <QMessageBox>
  19 #include <QMouseEvent>
  20 #include <QNetworkReply>
  21 #include <QShortcut>
  22 #include <QTimer>
  23 #include <QWheelEvent>
  24 #include <future>
  25 #include <sqlite3.h>
  26 #include <string>
  27 #include <vector>
  28
  29 using namespace std;
  30 using namespace std::placeholders;
  31
  32 MainWindow *global_mainwindow = nullptr;
  33 static ClipList *cliplist_clips;
  34 static PlayList *playlist_clips;
  35
  36 extern int64_t current_pts;
  37
  38 namespace {
  39
  40 void set_pts_in(int64_t pts, int64_t current_pts, ClipProxy &clip)
  41 {
  42         pts = std::max<int64_t>(pts, 0);
  43         if (clip->pts_out == -1) {
  44                 pts = std::min(pts, current_pts);
  45         } else {
  46                 pts = std::min(pts, clip->pts_out);
  47         }
  48         clip->pts_in = pts;
  49 }
  50
  51 }  // namespace
  52
  53 MainWindow::MainWindow()
  54         : ui(new Ui::MainWindow),
  55           db(global_flags.working_directory + "/futatabi.db"),
  56           midi_mapper(this)
  57 {
  58         global_mainwindow = this;
  59         ui->setupUi(this);
  60
  61         // Load settings from database.
  62         SettingsProto settings = db.get_settings();
  63         if (!global_flags.interpolation_quality_set) {
  64                 if (settings.interpolation_quality() != 0) {
  65                         global_flags.interpolation_quality = settings.interpolation_quality() - 1;
  66                 }
  67         }
  68         if (!global_flags.cue_in_point_padding_set) {
  69                 global_flags.cue_in_point_padding_seconds = settings.cue_in_point_padding_seconds();  // Default 0 is fine.
  70         }
  71         if (!global_flags.cue_out_point_padding_set) {
  72                 global_flags.cue_out_point_padding_seconds = settings.cue_out_point_padding_seconds();  // Default 0 is fine.
  73         }
  74         if (global_flags.interpolation_quality == 0) {
  75                 // Allocate something just for simplicity; we won't be using it
  76                 // unless the user changes runtime, in which case 1 is fine.
  77                 flow_initialized_interpolation_quality = 1;
  78         } else {
  79                 flow_initialized_interpolation_quality = global_flags.interpolation_quality;
  80         }
  81         save_settings();
  82
  83         // The menus.
  84         connect(ui->midi_mapping_action, &QAction::triggered, this, &MainWindow::midi_mapping_triggered);
  85         connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
  86         connect(ui->export_cliplist_clip_multitrack_action, &QAction::triggered, this, &MainWindow::export_cliplist_clip_multitrack_triggered);
  87         connect(ui->export_playlist_clip_interpolated_action, &QAction::triggered, this, &MainWindow::export_playlist_clip_interpolated_triggered);
  88         connect(ui->manual_action, &QAction::triggered, this, &MainWindow::manual_triggered);
  89         connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered);
  90         connect(ui->undo_action, &QAction::triggered, this, &MainWindow::undo_triggered);
  91         connect(ui->redo_action, &QAction::triggered, this, &MainWindow::redo_triggered);
  92         ui->undo_action->setEnabled(false);
  93         ui->redo_action->setEnabled(false);
  94
  95         // The quality group.
  96         QActionGroup *quality_group = new QActionGroup(ui->interpolation_menu);
  97         quality_group->addAction(ui->quality_0_action);
  98         quality_group->addAction(ui->quality_1_action);
  99         quality_group->addAction(ui->quality_2_action);
 100         quality_group->addAction(ui->quality_3_action);
 101         quality_group->addAction(ui->quality_4_action);
 102         if (global_flags.interpolation_quality == 0) {
 103                 ui->quality_0_action->setChecked(true);
 104         } else if (global_flags.interpolation_quality == 1) {
 105                 ui->quality_1_action->setChecked(true);
 106         } else if (global_flags.interpolation_quality == 2) {
 107                 ui->quality_2_action->setChecked(true);
 108         } else if (global_flags.interpolation_quality == 3) {
 109                 ui->quality_3_action->setChecked(true);
 110         } else if (global_flags.interpolation_quality == 4) {
 111                 ui->quality_4_action->setChecked(true);
 112         } else {
 113                 assert(false);
 114         }
 115         connect(ui->quality_0_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 0, _1));
 116         connect(ui->quality_1_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 1, _1));
 117         connect(ui->quality_2_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 2, _1));
 118         connect(ui->quality_3_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 3, _1));
 119         connect(ui->quality_4_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 4, _1));
 120
 121         // The cue-in point padding group.
 122         QActionGroup *in_padding_group = new QActionGroup(ui->in_padding_menu);
 123         in_padding_group->addAction(ui->in_padding_0_action);
 124         in_padding_group->addAction(ui->in_padding_1_action);
 125         in_padding_group->addAction(ui->in_padding_2_action);
 126         in_padding_group->addAction(ui->in_padding_5_action);
 127         if (global_flags.cue_in_point_padding_seconds <= 1e-3) {
 128                 ui->in_padding_0_action->setChecked(true);
 129         } else if (fabs(global_flags.cue_in_point_padding_seconds - 1.0) < 1e-3) {
 130                 ui->in_padding_1_action->setChecked(true);
 131         } else if (fabs(global_flags.cue_in_point_padding_seconds - 2.0) < 1e-3) {
 132                 ui->in_padding_2_action->setChecked(true);
 133         } else if (fabs(global_flags.cue_in_point_padding_seconds - 5.0) < 1e-3) {
 134                 ui->in_padding_5_action->setChecked(true);
 135         } else {
 136                 // Nothing to check, which is fine.
 137         }
 138         connect(ui->in_padding_0_action, &QAction::toggled, bind(&MainWindow::in_padding_toggled, this, 0.0, _1));
 139         connect(ui->in_padding_1_action, &QAction::toggled, bind(&MainWindow::in_padding_toggled, this, 1.0, _1));
 140         connect(ui->in_padding_2_action, &QAction::toggled, bind(&MainWindow::in_padding_toggled, this, 2.0, _1));
 141         connect(ui->in_padding_5_action, &QAction::toggled, bind(&MainWindow::in_padding_toggled, this, 5.0, _1));
 142
 143         // Same for the cue-out padding.
 144         QActionGroup *out_padding_group = new QActionGroup(ui->out_padding_menu);
 145         out_padding_group->addAction(ui->out_padding_0_action);
 146         out_padding_group->addAction(ui->out_padding_1_action);
 147         out_padding_group->addAction(ui->out_padding_2_action);
 148         out_padding_group->addAction(ui->out_padding_5_action);
 149         if (global_flags.cue_out_point_padding_seconds <= 1e-3) {
 150                 ui->out_padding_0_action->setChecked(true);
 151         } else if (fabs(global_flags.cue_out_point_padding_seconds - 1.0) < 1e-3) {
 152                 ui->out_padding_1_action->setChecked(true);
 153         } else if (fabs(global_flags.cue_out_point_padding_seconds - 2.0) < 1e-3) {
 154                 ui->out_padding_2_action->setChecked(true);
 155         } else if (fabs(global_flags.cue_out_point_padding_seconds - 5.0) < 1e-3) {
 156                 ui->out_padding_5_action->setChecked(true);
 157         } else {
 158                 // Nothing to check, which is fine.
 159         }
 160         connect(ui->out_padding_0_action, &QAction::toggled, bind(&MainWindow::out_padding_toggled, this, 0.0, _1));
 161         connect(ui->out_padding_1_action, &QAction::toggled, bind(&MainWindow::out_padding_toggled, this, 1.0, _1));
 162         connect(ui->out_padding_2_action, &QAction::toggled, bind(&MainWindow::out_padding_toggled, this, 2.0, _1));
 163         connect(ui->out_padding_5_action, &QAction::toggled, bind(&MainWindow::out_padding_toggled, this, 5.0, _1));
 164
 165         global_disk_space_estimator = new DiskSpaceEstimator(bind(&MainWindow::report_disk_space, this, _1, _2));
 166         disk_free_label = new QLabel(this);
 167         disk_free_label->setStyleSheet("QLabel {padding-right: 5px;}");
 168         ui->menuBar->setCornerWidget(disk_free_label);
 169
 170         StateProto state = db.get_state();
 171         undo_stack.push_back(state);  // The undo stack always has the current state on top.
 172
 173         cliplist_clips = new ClipList(state.clip_list());
 174         ui->clip_list->setModel(cliplist_clips);
 175         connect(cliplist_clips, &ClipList::any_content_changed, this, &MainWindow::content_changed);
 176
 177         playlist_clips = new PlayList(state.play_list());
 178         ui->playlist->setModel(playlist_clips);
 179         connect(playlist_clips, &PlayList::any_content_changed, this, &MainWindow::content_changed);
 180
 181         // For un-highlighting when we lose focus.
 182         ui->clip_list->installEventFilter(this);
 183
 184         // For scrubbing in the pts columns.
 185         ui->clip_list->viewport()->installEventFilter(this);
 186         ui->playlist->viewport()->installEventFilter(this);
 187
 188         QShortcut *cue_in = new QShortcut(QKeySequence(Qt::Key_A), this);
 189         connect(cue_in, &QShortcut::activated, ui->cue_in_btn, &QPushButton::click);
 190         connect(ui->cue_in_btn, &QPushButton::clicked, this, &MainWindow::cue_in_clicked);
 191
 192         QShortcut *cue_out = new QShortcut(QKeySequence(Qt::Key_S), this);
 193         connect(cue_out, &QShortcut::activated, ui->cue_out_btn, &QPushButton::click);
 194         connect(ui->cue_out_btn, &QPushButton::clicked, this, &MainWindow::cue_out_clicked);
 195
 196         QShortcut *queue = new QShortcut(QKeySequence(Qt::Key_Q), this);
 197         connect(queue, &QShortcut::activated, ui->queue_btn, &QPushButton::click);
 198         connect(ui->queue_btn, &QPushButton::clicked, this, &MainWindow::queue_clicked);
 199
 200         QShortcut *preview = new QShortcut(QKeySequence(Qt::Key_W), this);
 201         connect(preview, &QShortcut::activated, ui->preview_btn, &QPushButton::click);
 202         connect(ui->preview_btn, &QPushButton::clicked, this, &MainWindow::preview_clicked);
 203
 204         QShortcut *play = new QShortcut(QKeySequence(Qt::Key_Space), this);
 205         connect(play, &QShortcut::activated, ui->play_btn, &QPushButton::click);
 206         connect(ui->play_btn, &QPushButton::clicked, this, &MainWindow::play_clicked);
 207
 208         QShortcut *next = new QShortcut(QKeySequence(Qt::Key_N), this);
 209         connect(next, &QShortcut::activated, ui->next_btn, &QPushButton::click);
 210         connect(ui->next_btn, &QPushButton::clicked, this, &MainWindow::next_clicked);
 211
 212         connect(ui->stop_btn, &QPushButton::clicked, this, &MainWindow::stop_clicked);
 213         ui->stop_btn->setEnabled(false);
 214
 215         connect(ui->speed_slider, &QAbstractSlider::valueChanged, this, &MainWindow::speed_slider_changed);
 216         connect(ui->speed_lock_btn, &QPushButton::clicked, this, &MainWindow::speed_lock_clicked);
 217
 218         connect(ui->playlist_duplicate_btn, &QPushButton::clicked, this, &MainWindow::playlist_duplicate);
 219
 220         connect(ui->playlist_remove_btn, &QPushButton::clicked, this, &MainWindow::playlist_remove);
 221         QShortcut *delete_key = new QShortcut(QKeySequence(Qt::Key_Delete), ui->playlist);
 222         connect(delete_key, &QShortcut::activated, [this] {
 223                 if (ui->playlist->hasFocus()) {
 224                         playlist_remove();
 225                 }
 226         });
 227
 228         // TODO: support drag-and-drop.
 229         connect(ui->playlist_move_up_btn, &QPushButton::clicked, [this] { playlist_move(-1); });
 230         connect(ui->playlist_move_down_btn, &QPushButton::clicked, [this] { playlist_move(1); });
 231
 232         connect(ui->playlist->selectionModel(), &QItemSelectionModel::selectionChanged,
 233                 this, &MainWindow::playlist_selection_changed);
 234         playlist_selection_changed();  // First time set-up.
 235
 236         preview_player.reset(new Player(ui->preview_display, Player::NO_STREAM_OUTPUT));
 237         preview_player->set_done_callback([this] {
 238                 post_to_main_thread([this] {
 239                         preview_player_done();
 240                 });
 241         });
 242
 243         live_player.reset(new Player(ui->live_display, Player::HTTPD_STREAM_OUTPUT));
 244         live_player->set_done_callback([this] {
 245                 post_to_main_thread([this] {
 246                         live_player_done();
 247                 });
 248         });
 249         live_player->set_progress_callback([this](const map<uint64_t, double> &progress, TimeRemaining time_remaining) {
 250                 post_to_main_thread([this, progress, time_remaining] {
 251                         live_player_clip_progress(progress, time_remaining);
 252                 });
 253         });
 254         set_output_status("paused");
 255         enable_or_disable_queue_button();
 256
 257         defer_timeout = new QTimer(this);
 258         defer_timeout->setSingleShot(true);
 259         connect(defer_timeout, &QTimer::timeout, this, &MainWindow::defer_timer_expired);
 260         ui->undo_action->setEnabled(true);
 261
 262         lock_blink_timeout = new QTimer(this);
 263         lock_blink_timeout->setSingleShot(true);
 264         connect(lock_blink_timeout, &QTimer::timeout, this, &MainWindow::lock_blink_timer_expired);
 265
 266         connect(ui->clip_list->selectionModel(), &QItemSelectionModel::currentChanged,
 267                 this, &MainWindow::clip_list_selection_changed);
 268         enable_or_disable_queue_button();
 269
 270         // Find out how many cameras we have in the existing frames;
 271         // if none, we start with two cameras.
 272         num_cameras = 2;
 273         {
 274                 lock_guard<mutex> lock(frame_mu);
 275                 for (size_t stream_idx = 2; stream_idx < MAX_STREAMS; ++stream_idx) {
 276                         if (!frames[stream_idx].empty()) {
 277                                 num_cameras = stream_idx + 1;
 278                         }
 279                 }
 280         }
 281         change_num_cameras();
 282
 283         if (!global_flags.tally_url.empty()) {
 284                 start_tally();
 285         }
 286
 287         if (!global_flags.midi_mapping_filename.empty()) {
 288                 MIDIMappingProto midi_mapping;
 289                 if (!load_midi_mapping_from_file(global_flags.midi_mapping_filename, &midi_mapping)) {
 290                         fprintf(stderr, "Couldn't load MIDI mapping '%s'; exiting.\n",
 291                                 global_flags.midi_mapping_filename.c_str());
 292                         abort();
 293                 }
 294                 midi_mapper.set_midi_mapping(midi_mapping);
 295         }
 296         midi_mapper.refresh_lights();
 297         midi_mapper.start_thread();
 298 }
 299
 300 void MainWindow::change_num_cameras()
 301 {
 302         assert(num_cameras >= displays.size());  // We only add, never remove.
 303
 304         // Make new entries to hide the displays.
 305         for (unsigned i = displays.size(); i < num_cameras; ++i) {
 306                 char title[256];
 307                 snprintf(title, sizeof(title), "Camera %u", i + 1);
 308                 QAction *hide_action = ui->hide_camera_menu->addAction(title);
 309                 hide_action->setCheckable(true);
 310                 hide_action->setChecked(false);
 311                 connect(hide_action, &QAction::toggled, bind(&MainWindow::hide_camera_toggled, this, i, _1));
 312         }
 313
 314         // Make new display rows.
 315         for (unsigned i = displays.size(); i < num_cameras; ++i) {
 316                 QFrame *frame = new QFrame(this);
 317                 frame->setAutoFillBackground(true);
 318
 319                 QLayout *layout = new QGridLayout(frame);
 320                 frame->setLayout(layout);
 321                 layout->setContentsMargins(3, 3, 3, 3);
 322
 323                 JPEGFrameView *display = new JPEGFrameView(frame);
 324                 display->setAutoFillBackground(true);
 325                 layout->addWidget(display);
 326
 327                 display->set_overlay(to_string(i + 1));
 328
 329                 QPushButton *preview_btn = new QPushButton(this);
 330                 preview_btn->setMaximumSize(20, 17);
 331                 preview_btn->setText(QString::fromStdString(to_string(i + 1)));
 332                 ui->preview_layout->addWidget(preview_btn);
 333
 334                 displays.emplace_back(FrameAndDisplay{ frame, display, preview_btn, /*hidden=*/false });
 335
 336                 connect(display, &JPEGFrameView::clicked, preview_btn, &QPushButton::click);
 337                 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
 338                 connect(shortcut, &QShortcut::activated, preview_btn, &QPushButton::click);
 339
 340                 connect(preview_btn, &QPushButton::clicked, [this, i] { preview_angle_clicked(i); });
 341         }
 342         relayout_displays();
 343
 344         cliplist_clips->change_num_cameras(num_cameras);
 345         playlist_clips->change_num_cameras(num_cameras);
 346
 347         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 348 }
 349
 350 void MainWindow::relayout_displays()
 351 {
 352         while (ui->input_displays->count() > 0) {
 353                 QLayoutItem *item = ui->input_displays->takeAt(0);
 354                 ui->input_displays->removeWidget(item->widget());
 355         }
 356
 357         unsigned cell_idx = 0;
 358         for (unsigned i = 0; i < displays.size(); ++i) {
 359                 if (displays[i].hidden) {
 360                         displays[i].frame->setVisible(false);
 361                 } else {
 362                         displays[i].frame->setVisible(true);
 363                         ui->input_displays->addWidget(displays[i].frame, cell_idx / 2, cell_idx % 2);
 364                         ++cell_idx;
 365                 }
 366         }
 367         ui->video_displays->setStretch(1, (cell_idx + 1) / 2);
 368
 369         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 370 }
 371
 372 MainWindow::~MainWindow()
 373 {
 374         // We don't have a context to release Player's OpenGL resources in here,
 375         // so instead of crashing on exit, leak it.
 376         live_player.release();
 377         preview_player.release();
 378 }
 379
 380 void MainWindow::cue_in_clicked()
 381 {
 382         if (!cliplist_clips->empty() && cliplist_clips->back()->pts_out < 0) {
 383                 cliplist_clips->mutable_back()->pts_in = current_pts;
 384         } else {
 385                 Clip clip;
 386                 clip.pts_in = max<int64_t>(current_pts - lrint(global_flags.cue_in_point_padding_seconds * TIMEBASE), 0);
 387                 cliplist_clips->add_clip(clip);
 388                 playlist_selection_changed();
 389         }
 390
 391         // Show the clip in the preview.
 392         unsigned stream_idx = ui->preview_display->get_stream_idx();
 393         preview_single_frame(cliplist_clips->mutable_back()->pts_in, stream_idx, FIRST_AT_OR_AFTER);
 394
 395         // Select the item so that we can jog it.
 396         ui->clip_list->setFocus();
 397         QModelIndex index = cliplist_clips->index(cliplist_clips->size() - 1, int(ClipList::Column::IN));
 398         ui->clip_list->selectionModel()->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect);
 399         ui->clip_list->scrollToBottom();
 400         enable_or_disable_queue_button();
 401 }
 402
 403 void MainWindow::cue_out_clicked()
 404 {
 405         if (cliplist_clips->empty()) {
 406                 return;
 407         }
 408
 409         cliplist_clips->mutable_back()->pts_out = current_pts + lrint(global_flags.cue_out_point_padding_seconds * TIMEBASE);
 410
 411         // Show the clip in the preview. (TODO: This won't take padding into account.)
 412         unsigned stream_idx = ui->preview_display->get_stream_idx();
 413         preview_single_frame(cliplist_clips->mutable_back()->pts_out, stream_idx, LAST_BEFORE);
 414
 415         // Select the item so that we can jog it.
 416         ui->clip_list->setFocus();
 417         QModelIndex index = cliplist_clips->index(cliplist_clips->size() - 1, int(ClipList::Column::OUT));
 418         ui->clip_list->selectionModel()->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect);
 419         ui->clip_list->scrollToBottom();
 420         enable_or_disable_queue_button();
 421 }
 422
 423 void MainWindow::queue_clicked()
 424 {
 425         // See also enable_or_disable_queue_button().
 426
 427         if (cliplist_clips->empty()) {
 428                 return;
 429         }
 430
 431         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 432         if (!selected->hasSelection()) {
 433                 Clip clip = *cliplist_clips->back();
 434                 clip.stream_idx = 0;
 435                 playlist_clips->add_clip(clip);
 436                 playlist_selection_changed();
 437                 ui->playlist->scrollToBottom();
 438                 return;
 439         }
 440
 441         QModelIndex index = selected->currentIndex();
 442         Clip clip = *cliplist_clips->clip(index.row());
 443         if (cliplist_clips->is_camera_column(index.column())) {
 444                 clip.stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 445         } else {
 446                 clip.stream_idx = ui->preview_display->get_stream_idx();
 447         }
 448         if (clip.pts_out == -1) {
 449                 clip.pts_out = clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
 450         }
 451
 452         playlist_clips->add_clip(clip);
 453         playlist_selection_changed();
 454         ui->playlist->scrollToBottom();
 455         if (!ui->playlist->selectionModel()->hasSelection()) {
 456                 // TODO: Figure out why this doesn't always seem to actually select the row.
 457                 QModelIndex bottom = playlist_clips->index(playlist_clips->size() - 1, 0);
 458                 ui->playlist->setCurrentIndex(bottom);
 459         }
 460 }
 461
 462 void MainWindow::preview_clicked()
 463 {
 464         // See also enable_or_disable_preview_button().
 465
 466         if (ui->playlist->hasFocus()) {
 467                 // Allow the playlist as preview iff it has focus and something is selected.
 468                 QItemSelectionModel *selected = ui->playlist->selectionModel();
 469                 if (selected->hasSelection()) {
 470                         QModelIndex index = selected->currentIndex();
 471                         const Clip &clip = *playlist_clips->clip(index.row());
 472                         preview_player->play(clip);
 473                         preview_playing = true;
 474                         enable_or_disable_preview_button();
 475                         return;
 476                 }
 477         }
 478
 479         if (cliplist_clips->empty())
 480                 return;
 481
 482         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 483         if (!selected->hasSelection()) {
 484                 preview_player->play(*cliplist_clips->back());
 485                 preview_playing = true;
 486                 enable_or_disable_preview_button();
 487                 return;
 488         }
 489
 490         QModelIndex index = selected->currentIndex();
 491         Clip clip = *cliplist_clips->clip(index.row());
 492         if (cliplist_clips->is_camera_column(index.column())) {
 493                 clip.stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 494         } else {
 495                 clip.stream_idx = ui->preview_display->get_stream_idx();
 496         }
 497         if (clip.pts_out == -1) {
 498                 clip.pts_out = clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
 499         }
 500         preview_player->play(clip);
 501         preview_playing = true;
 502         enable_or_disable_preview_button();
 503 }
 504
 505 void MainWindow::preview_angle_clicked(unsigned stream_idx)
 506 {
 507         preview_player->override_angle(stream_idx);
 508
 509         // Change the selection if we were previewing a clip from the clip list.
 510         // (The only other thing we could be showing is a pts scrub, and if so,
 511         // that would be selected.)
 512         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 513         if (selected->hasSelection()) {
 514                 QModelIndex cell = selected->selectedIndexes()[0];
 515                 int column = int(ClipList::Column::CAMERA_1) + stream_idx;
 516                 selected->setCurrentIndex(cell.sibling(cell.row(), column), QItemSelectionModel::ClearAndSelect);
 517         }
 518 }
 519
 520 void MainWindow::playlist_duplicate()
 521 {
 522         QItemSelectionModel *selected = ui->playlist->selectionModel();
 523         if (!selected->hasSelection()) {
 524                 // Should have been grayed out, but OK.
 525                 return;
 526         }
 527         QModelIndexList rows = selected->selectedRows();
 528         int first = rows.front().row(), last = rows.back().row();
 529         playlist_clips->duplicate_clips(first, last);
 530         playlist_selection_changed();
 531 }
 532
 533 void MainWindow::playlist_remove()
 534 {
 535         QItemSelectionModel *selected = ui->playlist->selectionModel();
 536         if (!selected->hasSelection()) {
 537                 // Should have been grayed out, but OK.
 538                 return;
 539         }
 540         QModelIndexList rows = selected->selectedRows();
 541         int first = rows.front().row(), last = rows.back().row();
 542         playlist_clips->erase_clips(first, last);
 543
 544         // TODO: select the next one in the list?
 545
 546         playlist_selection_changed();
 547 }
 548
 549 void MainWindow::playlist_move(int delta)
 550 {
 551         QItemSelectionModel *selected = ui->playlist->selectionModel();
 552         if (!selected->hasSelection()) {
 553                 // Should have been grayed out, but OK.
 554                 return;
 555         }
 556
 557         QModelIndexList rows = selected->selectedRows();
 558         int first = rows.front().row(), last = rows.back().row();
 559         if ((delta == -1 && first == 0) ||
 560             (delta == 1 && size_t(last) == playlist_clips->size() - 1)) {
 561                 // Should have been grayed out, but OK.
 562                 return;
 563         }
 564
 565         playlist_clips->move_clips(first, last, delta);
 566         playlist_selection_changed();
 567 }
 568
 569 void MainWindow::jog_internal(JogDestination jog_destination, int row, int column, int stream_idx, int pts_delta)
 570 {
 571         constexpr int camera_pts_per_pixel = 1500;  // One click of most mice (15 degrees), multiplied by the default wheel_sensitivity.
 572
 573         int in_column, out_column, camera_column;
 574         if (jog_destination == JOG_CLIP_LIST) {
 575                 in_column = int(ClipList::Column::IN);
 576                 out_column = int(ClipList::Column::OUT);
 577                 camera_column = -1;
 578         } else if (jog_destination == JOG_PLAYLIST) {
 579                 in_column = int(PlayList::Column::IN);
 580                 out_column = int(PlayList::Column::OUT);
 581                 camera_column = int(PlayList::Column::CAMERA);
 582         } else {
 583                 assert(false);
 584         }
 585
 586         currently_deferring_model_changes = true;
 587         {
 588                 current_change_id = (jog_destination == JOG_CLIP_LIST) ? "cliplist:" : "playlist:";
 589                 ClipProxy clip = (jog_destination == JOG_CLIP_LIST) ? cliplist_clips->mutable_clip(row) : playlist_clips->mutable_clip(row);
 590                 if (jog_destination == JOG_PLAYLIST) {
 591                         stream_idx = clip->stream_idx;
 592                 }
 593
 594                 if (column == in_column) {
 595                         current_change_id += "in:" + to_string(row);
 596                         int64_t pts = clip->pts_in + pts_delta;
 597                         set_pts_in(pts, current_pts, clip);
 598                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 599                 } else if (column == out_column) {
 600                         current_change_id += "out:" + to_string(row);
 601                         int64_t pts = clip->pts_out + pts_delta;
 602                         pts = std::max(pts, clip->pts_in);
 603                         pts = std::min(pts, current_pts);
 604                         clip->pts_out = pts;
 605                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 606                 } else if (column == camera_column) {
 607                         current_change_id += "camera:" + to_string(row);
 608                         int angle_degrees = pts_delta;
 609                         if (last_mousewheel_camera_row == row) {
 610                                 angle_degrees += leftover_angle_degrees;
 611                         }
 612
 613                         int stream_idx = clip->stream_idx + angle_degrees / camera_pts_per_pixel;
 614                         stream_idx = std::max(stream_idx, 0);
 615                         stream_idx = std::min<int>(stream_idx, num_cameras - 1);
 616                         clip->stream_idx = stream_idx;
 617
 618                         last_mousewheel_camera_row = row;
 619                         leftover_angle_degrees = angle_degrees % camera_pts_per_pixel;
 620
 621                         // Don't update the live view, that's rarely what the operator wants.
 622                 }
 623         }
 624         currently_deferring_model_changes = false;
 625 }
 626
 627 void MainWindow::defer_timer_expired()
 628 {
 629         state_changed(deferred_state);
 630 }
 631
 632 void MainWindow::content_changed()
 633 {
 634         // If we are playing, update the part of the playlist that's not playing yet.
 635         vector<ClipWithID> clips;
 636         for (unsigned row = 0; row < playlist_clips->size(); ++row) {
 637                 clips.emplace_back(*playlist_clips->clip_with_id(row));
 638         }
 639         live_player->splice_play(clips);
 640
 641         // Serialize the state.
 642         if (defer_timeout->isActive() &&
 643             (!currently_deferring_model_changes || deferred_change_id != current_change_id)) {
 644                 // There's some deferred event waiting, but this event is unrelated.
 645                 // So it's time to short-circuit that timer and do the work it wanted to do.
 646                 defer_timeout->stop();
 647                 state_changed(deferred_state);
 648         }
 649         StateProto state;
 650         *state.mutable_clip_list() = cliplist_clips->serialize();
 651         *state.mutable_play_list() = playlist_clips->serialize();
 652         if (currently_deferring_model_changes) {
 653                 deferred_change_id = current_change_id;
 654                 deferred_state = std::move(state);
 655                 defer_timeout->start(200);
 656                 return;
 657         }
 658         state_changed(state);
 659 }
 660
 661 void MainWindow::state_changed(const StateProto &state)
 662 {
 663         db.store_state(state);
 664
 665         redo_stack.clear();
 666         ui->redo_action->setEnabled(false);
 667
 668         undo_stack.push_back(state);
 669         ui->undo_action->setEnabled(undo_stack.size() > 1);
 670
 671         // Make sure it doesn't grow without bounds.
 672         while (undo_stack.size() >= 100) {
 673                 undo_stack.pop_front();
 674         }
 675 }
 676
 677 void MainWindow::save_settings()
 678 {
 679         SettingsProto settings;
 680         settings.set_interpolation_quality(global_flags.interpolation_quality + 1);
 681         settings.set_cue_in_point_padding_seconds(global_flags.cue_in_point_padding_seconds);
 682         settings.set_cue_out_point_padding_seconds(global_flags.cue_out_point_padding_seconds);
 683         db.store_settings(settings);
 684 }
 685
 686 void MainWindow::lock_blink_timer_expired()
 687 {
 688         midi_mapper.set_locked(MIDIMapper::LightState(ui->speed_lock_btn->isChecked()));  // Presumably On, or the timer should have been canceled.
 689 }
 690
 691 void MainWindow::play_clicked()
 692 {
 693         QItemSelectionModel *selected = ui->playlist->selectionModel();
 694         if (!selected->hasSelection()) {
 695                 return;
 696         }
 697         unsigned start_row = selected->selectedRows(0)[0].row();
 698
 699         vector<ClipWithID> clips;
 700         for (unsigned row = start_row; row < playlist_clips->size(); ++row) {
 701                 ClipWithID clip = *playlist_clips->clip_with_id(row);
 702                 if (clip.clip.pts_out == -1) {
 703                         clip.clip.pts_out = clip.clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
 704                 }
 705                 clips.emplace_back(clip);
 706         }
 707         live_player->play(clips);
 708         playlist_clips->set_progress({ { start_row, 0.0f } });
 709         ui->playlist->selectionModel()->clear();
 710         ui->stop_btn->setEnabled(true);
 711         playlist_selection_changed();
 712 }
 713
 714 void MainWindow::next_clicked()
 715 {
 716         live_player->skip_to_next();
 717 }
 718
 719 void MainWindow::stop_clicked()
 720 {
 721         Clip fake_clip;
 722         fake_clip.pts_in = 0;
 723         fake_clip.pts_out = 0;
 724         playlist_clips->set_progress({});
 725         live_player->play(fake_clip);
 726         ui->stop_btn->setEnabled(false);
 727         playlist_selection_changed();
 728 }
 729
 730 void MainWindow::speed_slider_changed(int percent)
 731 {
 732         float speed = percent / 100.0f;
 733         ui->speed_lock_btn->setText(QString::fromStdString(" " + to_string(percent) + "%"));
 734         live_player->set_master_speed(speed);
 735         midi_mapper.set_speed_light(speed);
 736 }
 737
 738 void MainWindow::speed_lock_clicked()
 739 {
 740         // TODO: Make for a less abrupt transition if we're not already at 100%.
 741         ui->speed_slider->setValue(100);  // Also actually sets the master speed and updates the label.
 742         ui->speed_slider->setEnabled(!ui->speed_lock_btn->isChecked());
 743         midi_mapper.set_locked(MIDIMapper::LightState(ui->speed_lock_btn->isChecked()));
 744         lock_blink_timeout->stop();
 745 }
 746
 747 void MainWindow::preview_player_done()
 748 {
 749         preview_playing = false;
 750         enable_or_disable_preview_button();
 751 }
 752
 753 void MainWindow::live_player_done()
 754 {
 755         playlist_clips->set_progress({});
 756         ui->stop_btn->setEnabled(false);
 757         playlist_selection_changed();
 758 }
 759
 760 void MainWindow::live_player_clip_progress(const map<uint64_t, double> &progress, TimeRemaining time_remaining)
 761 {
 762         playlist_clips->set_progress(progress);
 763         set_output_status(format_duration(time_remaining) + " left");
 764 }
 765
 766 void MainWindow::resizeEvent(QResizeEvent *event)
 767 {
 768         QMainWindow::resizeEvent(event);
 769
 770         // Ask for a relayout, but only after the event loop is done doing relayout
 771         // on everything else.
 772         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 773 }
 774
 775 void MainWindow::relayout()
 776 {
 777         ui->live_display->setMinimumWidth(ui->live_display->height() * 16 / 9);
 778         ui->preview_display->setMinimumWidth(ui->preview_display->height() * 16 / 9);
 779 }
 780
 781 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 782 {
 783         constexpr int dead_zone_pixels = 3;  // To avoid that simple clicks get misinterpreted.
 784         int scrub_sensitivity = 100;  // pts units per pixel.
 785         int wheel_sensitivity = 100;  // pts units per degree.
 786
 787         if (event->type() == QEvent::FocusIn || event->type() == QEvent::FocusOut) {
 788                 enable_or_disable_preview_button();
 789                 playlist_selection_changed();
 790                 hidden_jog_column = -1;
 791         }
 792
 793         unsigned stream_idx = ui->preview_display->get_stream_idx();
 794
 795         if (watched == ui->clip_list) {
 796                 if (event->type() == QEvent::FocusOut) {
 797                         highlight_camera_input(-1);
 798                 }
 799                 return false;
 800         }
 801
 802         if (event->type() != QEvent::Wheel) {
 803                 last_mousewheel_camera_row = -1;
 804         }
 805
 806         if (event->type() == QEvent::MouseButtonPress) {
 807                 QMouseEvent *mouse = (QMouseEvent *)event;
 808
 809                 QTableView *destination;
 810                 ScrubType type;
 811
 812                 if (watched == ui->clip_list->viewport()) {
 813                         destination = ui->clip_list;
 814                         type = SCRUBBING_CLIP_LIST;
 815                 } else if (watched == ui->playlist->viewport()) {
 816                         destination = ui->playlist;
 817                         type = SCRUBBING_PLAYLIST;
 818                 } else {
 819                         return false;
 820                 }
 821                 int column = destination->columnAt(mouse->x());
 822                 int row = destination->rowAt(mouse->y());
 823                 if (column == -1 || row == -1)
 824                         return false;
 825
 826                 if (type == SCRUBBING_CLIP_LIST) {
 827                         if (ClipList::Column(column) == ClipList::Column::IN) {
 828                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_in;
 829                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 830                         } else if (ClipList::Column(column) == ClipList::Column::OUT) {
 831                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_out;
 832                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 833                         } else {
 834                                 return false;
 835                         }
 836                 } else {
 837                         if (PlayList::Column(column) == PlayList::Column::IN) {
 838                                 scrub_pts_origin = playlist_clips->clip(row)->pts_in;
 839                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 840                         } else if (PlayList::Column(column) == PlayList::Column::OUT) {
 841                                 scrub_pts_origin = playlist_clips->clip(row)->pts_out;
 842                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 843                         } else {
 844                                 return false;
 845                         }
 846                 }
 847
 848                 scrubbing = true;
 849                 scrub_row = row;
 850                 scrub_column = column;
 851                 scrub_x_origin = mouse->x();
 852                 scrub_type = type;
 853         } else if (event->type() == QEvent::MouseMove) {
 854                 QMouseEvent *mouse = (QMouseEvent *)event;
 855                 if (mouse->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 856                         scrub_sensitivity *= 10;
 857                         wheel_sensitivity *= 10;
 858                         if (mouse->modifiers() & Qt::KeyboardModifier::ControlModifier) {
 859                                 // Ctrl+Shift is a super-modifier, meant only for things like “go back two hours”.
 860                                 scrub_sensitivity *= 100;
 861                                 wheel_sensitivity *= 100;
 862                         }
 863                 }
 864                 if (mouse->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 865                         scrub_sensitivity /= 10;
 866                         wheel_sensitivity /= 10;
 867                 }
 868                 if (scrubbing) {
 869                         int offset = mouse->x() - scrub_x_origin;
 870                         int adjusted_offset;
 871                         if (offset >= dead_zone_pixels) {
 872                                 adjusted_offset = offset - dead_zone_pixels;
 873                         } else if (offset < -dead_zone_pixels) {
 874                                 adjusted_offset = offset + dead_zone_pixels;
 875                         } else {
 876                                 adjusted_offset = 0;
 877                         }
 878
 879                         int64_t pts = scrub_pts_origin + adjusted_offset * scrub_sensitivity;
 880                         currently_deferring_model_changes = true;
 881                         if (scrub_type == SCRUBBING_CLIP_LIST) {
 882                                 ClipProxy clip = cliplist_clips->mutable_clip(scrub_row);
 883                                 if (scrub_column == int(ClipList::Column::IN)) {
 884                                         current_change_id = "cliplist:in:" + to_string(scrub_row);
 885                                         set_pts_in(pts, current_pts, clip);
 886                                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 887                                 } else {
 888                                         current_change_id = "cliplist:out" + to_string(scrub_row);
 889                                         pts = std::max(pts, clip->pts_in);
 890                                         pts = std::min(pts, current_pts);
 891                                         clip->pts_out = pts;
 892                                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 893                                 }
 894                         } else {
 895                                 ClipProxy clip = playlist_clips->mutable_clip(scrub_row);
 896                                 if (scrub_column == int(PlayList::Column::IN)) {
 897                                         current_change_id = "playlist:in:" + to_string(scrub_row);
 898                                         set_pts_in(pts, current_pts, clip);
 899                                         preview_single_frame(pts, clip->stream_idx, FIRST_AT_OR_AFTER);
 900                                 } else {
 901                                         current_change_id = "playlist:out:" + to_string(scrub_row);
 902                                         pts = std::max(pts, clip->pts_in);
 903                                         pts = std::min(pts, current_pts);
 904                                         clip->pts_out = pts;
 905                                         preview_single_frame(pts, clip->stream_idx, LAST_BEFORE);
 906                                 }
 907                         }
 908                         currently_deferring_model_changes = false;
 909
 910                         return true;  // Don't use this mouse movement for selecting things.
 911                 }
 912         } else if (event->type() == QEvent::Wheel) {
 913                 QWheelEvent *wheel = (QWheelEvent *)event;
 914                 int angle_delta = wheel->angleDelta().y();
 915                 if (wheel->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 916                         scrub_sensitivity *= 10;
 917                         wheel_sensitivity *= 10;
 918                         if (wheel->modifiers() & Qt::KeyboardModifier::ControlModifier) {
 919                                 // Ctrl+Shift is a super-modifier, meant only for things like “go back two hours”.
 920                                 scrub_sensitivity *= 100;
 921                                 wheel_sensitivity *= 100;
 922                         }
 923                 }
 924                 if (wheel->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 925                         scrub_sensitivity /= 10;
 926                         wheel_sensitivity /= 10;
 927                         angle_delta = wheel->angleDelta().x();  // Qt ickiness.
 928                 }
 929
 930                 QTableView *destination;
 931                 JogDestination jog_destination;
 932                 if (watched == ui->clip_list->viewport()) {
 933                         destination = ui->clip_list;
 934                         jog_destination = JOG_CLIP_LIST;
 935                         last_mousewheel_camera_row = -1;
 936                 } else if (watched == ui->playlist->viewport()) {
 937                         destination = ui->playlist;
 938                         jog_destination = JOG_PLAYLIST;
 939                         if (destination->columnAt(wheel->x()) != int(PlayList::Column::CAMERA)) {
 940                                 last_mousewheel_camera_row = -1;
 941                         }
 942                 } else {
 943                         last_mousewheel_camera_row = -1;
 944                         return false;
 945                 }
 946
 947                 int column = destination->columnAt(wheel->x());
 948                 int row = destination->rowAt(wheel->y());
 949                 if (column == -1 || row == -1)
 950                         return false;
 951
 952                 // Only adjust pts with the wheel if the given row is selected.
 953                 if (!destination->hasFocus() ||
 954                     row != destination->selectionModel()->currentIndex().row()) {
 955                         return false;
 956                 }
 957
 958                 jog_internal(jog_destination, row, column, stream_idx, angle_delta * wheel_sensitivity);
 959                 return true;  // Don't scroll.
 960         } else if (event->type() == QEvent::MouseButtonRelease) {
 961                 scrubbing = false;
 962         }
 963         return false;
 964 }
 965
 966 void MainWindow::preview_single_frame(int64_t pts, unsigned stream_idx, MainWindow::Rounding rounding)
 967 {
 968         if (rounding == LAST_BEFORE) {
 969                 lock_guard<mutex> lock(frame_mu);
 970                 if (frames[stream_idx].empty())
 971                         return;
 972                 auto it = find_last_frame_before(frames[stream_idx], pts);
 973                 if (it != frames[stream_idx].end()) {
 974                         pts = it->pts;
 975                 }
 976         } else {
 977                 assert(rounding == FIRST_AT_OR_AFTER);
 978                 lock_guard<mutex> lock(frame_mu);
 979                 if (frames[stream_idx].empty())
 980                         return;
 981                 auto it = find_first_frame_at_or_after(frames[stream_idx], pts);
 982                 if (it != frames[stream_idx].end()) {
 983                         pts = it->pts;
 984                 }
 985         }
 986
 987         Clip fake_clip;
 988         fake_clip.pts_in = pts;
 989         fake_clip.pts_out = pts + 1;
 990         fake_clip.stream_idx = stream_idx;
 991         preview_player->play(fake_clip);
 992 }
 993
 994 void MainWindow::playlist_selection_changed()
 995 {
 996         enable_or_disable_preview_button();
 997
 998         QItemSelectionModel *selected = ui->playlist->selectionModel();
 999         bool any_selected = selected->hasSelection();
1000         ui->playlist_duplicate_btn->setEnabled(any_selected);
1001         ui->playlist_remove_btn->setEnabled(any_selected);
1002         ui->playlist_move_up_btn->setEnabled(
1003                 any_selected && selected->selectedRows().front().row() > 0);
1004         ui->playlist_move_down_btn->setEnabled(
1005                 any_selected && selected->selectedRows().back().row() < int(playlist_clips->size()) - 1);
1006
1007         ui->play_btn->setEnabled(any_selected);
1008         ui->next_btn->setEnabled(ui->stop_btn->isEnabled());  // TODO: Perhaps not if we're on the last clip?
1009         midi_mapper.set_next_ready(ui->next_btn->isEnabled() ? MIDIMapper::On : MIDIMapper::Off);
1010
1011         // NOTE: The hidden button is still reachable by keyboard or MIDI.
1012         if (any_selected) {
1013                 ui->play_btn->setVisible(true);
1014         } else if (ui->stop_btn->isEnabled()) {  // Playing.
1015                 ui->play_btn->setVisible(false);
1016         } else {
1017                 ui->play_btn->setVisible(true);
1018         }
1019         ui->next_btn->setVisible(!ui->play_btn->isVisible());
1020
1021         if (ui->stop_btn->isEnabled()) {  // Playing.
1022                 midi_mapper.set_play_enabled(MIDIMapper::On);
1023         } else if (any_selected) {
1024                 midi_mapper.set_play_enabled(MIDIMapper::Blinking);
1025         } else {
1026                 midi_mapper.set_play_enabled(MIDIMapper::Off);
1027         }
1028
1029         if (!any_selected) {
1030                 set_output_status("paused");
1031         } else {
1032                 vector<ClipWithID> clips;
1033                 for (size_t row = selected->selectedRows().front().row(); row < playlist_clips->size(); ++row) {
1034                         clips.emplace_back(*playlist_clips->clip_with_id(row));
1035                 }
1036                 TimeRemaining remaining = compute_total_time(clips);
1037                 set_output_status(format_duration(remaining) + " ready");
1038         }
1039 }
1040
1041 void MainWindow::clip_list_selection_changed(const QModelIndex &current, const QModelIndex &previous)
1042 {
1043         int camera_selected = -1;
1044         if (cliplist_clips->is_camera_column(current.column())) {
1045                 camera_selected = current.column() - int(ClipList::Column::CAMERA_1);
1046
1047                 // See the comment on hidden_jog_column.
1048                 if (current.row() != previous.row()) {
1049                         hidden_jog_column = -1;
1050                 } else if (hidden_jog_column == -1) {
1051                         hidden_jog_column = previous.column();
1052                 }
1053         } else {
1054                 hidden_jog_column = -1;
1055         }
1056         highlight_camera_input(camera_selected);
1057         enable_or_disable_queue_button();
1058 }
1059
1060 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
1061 {
1062         char time_str[256];
1063         if (estimated_seconds_left < 60.0) {
1064                 strcpy(time_str, "<font color=\"red\">Less than a minute</font>");
1065         } else if (estimated_seconds_left < 1800.0) {  // Less than half an hour: Xm Ys (red).
1066                 int s = lrintf(estimated_seconds_left);
1067                 int m = s / 60;
1068                 s %= 60;
1069                 snprintf(time_str, sizeof(time_str), "<font color=\"red\">%dm %ds</font>", m, s);
1070         } else if (estimated_seconds_left < 3600.0) {  // Less than an hour: Xm.
1071                 int m = lrintf(estimated_seconds_left / 60.0);
1072                 snprintf(time_str, sizeof(time_str), "%dm", m);
1073         } else if (estimated_seconds_left < 36000.0) {  // Less than ten hours: Xh Ym.
1074                 int m = lrintf(estimated_seconds_left / 60.0);
1075                 int h = m / 60;
1076                 m %= 60;
1077                 snprintf(time_str, sizeof(time_str), "%dh %dm", h, m);
1078         } else {  // More than ten hours: Xh.
1079                 int h = lrintf(estimated_seconds_left / 3600.0);
1080                 snprintf(time_str, sizeof(time_str), "%dh", h);
1081         }
1082         char buf[256];
1083         snprintf(buf, sizeof(buf), "Disk free: %'.0f MB (approx. %s)", free_bytes / 1048576.0, time_str);
1084
1085         std::string label = buf;
1086
1087         post_to_main_thread([this, label] {
1088                 disk_free_label->setText(QString::fromStdString(label));
1089                 ui->menuBar->setCornerWidget(disk_free_label);  // Need to set this again for the sizing to get right.
1090         });
1091 }
1092
1093 void MainWindow::midi_mapping_triggered()
1094 {
1095         MIDIMappingDialog(&midi_mapper).exec();
1096 }
1097
1098 void MainWindow::exit_triggered()
1099 {
1100         close();
1101 }
1102
1103 void MainWindow::export_cliplist_clip_multitrack_triggered()
1104 {
1105         QItemSelectionModel *selected = ui->clip_list->selectionModel();
1106         if (!selected->hasSelection()) {
1107                 QMessageBox msgbox;
1108                 msgbox.setText("No clip selected in the clip list. Select one and try exporting again.");
1109                 msgbox.exec();
1110                 return;
1111         }
1112
1113         QModelIndex index = selected->currentIndex();
1114         Clip clip = *cliplist_clips->clip(index.row());
1115         QString filename = QFileDialog::getSaveFileName(this,
1116                 "Export multitrack clip", QString(), tr("Matroska video files (*.mkv)"));
1117         if (filename.isNull()) {
1118                 // Cancel.
1119                 return;
1120         }
1121         if (!filename.endsWith(".mkv")) {
1122                 filename += ".mkv";
1123         }
1124         export_multitrack_clip(filename.toStdString(), clip);
1125 }
1126
1127 void MainWindow::export_playlist_clip_interpolated_triggered()
1128 {
1129         QItemSelectionModel *selected = ui->playlist->selectionModel();
1130         if (!selected->hasSelection()) {
1131                 QMessageBox msgbox;
1132                 msgbox.setText("No clip selected in the playlist. Select one and try exporting again.");
1133                 msgbox.exec();
1134                 return;
1135         }
1136
1137         QString filename = QFileDialog::getSaveFileName(this,
1138                 "Export interpolated clip", QString(), tr("Matroska video files (*.mkv)"));
1139         if (filename.isNull()) {
1140                 // Cancel.
1141                 return;
1142         }
1143         if (!filename.endsWith(".mkv")) {
1144                 filename += ".mkv";
1145         }
1146
1147         vector<Clip> clips;
1148         QModelIndexList rows = selected->selectedRows();
1149         for (QModelIndex index : rows) {
1150                 clips.push_back(*playlist_clips->clip(index.row()));
1151         }
1152         export_interpolated_clip(filename.toStdString(), clips);
1153 }
1154
1155 void MainWindow::manual_triggered()
1156 {
1157         if (!QDesktopServices::openUrl(QUrl("https://nageru.sesse.net/doc/"))) {
1158                 QMessageBox msgbox;
1159                 msgbox.setText("Could not launch manual in web browser.\nPlease see https://nageru.sesse.net/doc/ manually.");
1160                 msgbox.exec();
1161         }
1162 }
1163
1164 void MainWindow::about_triggered()
1165 {
1166         AboutDialog("Futatabi", "Multicamera slow motion video server").exec();
1167 }
1168
1169 void MainWindow::undo_triggered()
1170 {
1171         // Finish any deferred action.
1172         if (defer_timeout->isActive()) {
1173                 defer_timeout->stop();
1174                 state_changed(deferred_state);
1175         }
1176
1177         StateProto redo_state;
1178         *redo_state.mutable_clip_list() = cliplist_clips->serialize();
1179         *redo_state.mutable_play_list() = playlist_clips->serialize();
1180         redo_stack.push_back(std::move(redo_state));
1181         ui->redo_action->setEnabled(true);
1182
1183         assert(undo_stack.size() > 1);
1184
1185         // Pop off the current state, which is always at the top of the stack.
1186         undo_stack.pop_back();
1187
1188         StateProto state = undo_stack.back();
1189         ui->undo_action->setEnabled(undo_stack.size() > 1);
1190
1191         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1192         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1193
1194         db.store_state(state);
1195 }
1196
1197 void MainWindow::redo_triggered()
1198 {
1199         assert(!redo_stack.empty());
1200
1201         ui->undo_action->setEnabled(true);
1202         ui->redo_action->setEnabled(true);
1203
1204         undo_stack.push_back(std::move(redo_stack.back()));
1205         redo_stack.pop_back();
1206         ui->undo_action->setEnabled(true);
1207         ui->redo_action->setEnabled(!redo_stack.empty());
1208
1209         const StateProto &state = undo_stack.back();
1210         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1211         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1212
1213         db.store_state(state);
1214 }
1215
1216 void MainWindow::quality_toggled(int quality, bool checked)
1217 {
1218         if (!checked) {
1219                 return;
1220         }
1221         global_flags.interpolation_quality = quality;
1222         if (quality != 0 &&  // Turning interpolation off is always possible.
1223             quality != flow_initialized_interpolation_quality) {
1224                 QMessageBox msgbox;
1225                 msgbox.setText(QString::fromStdString(
1226                         "The interpolation quality for the main output cannot be changed at runtime, "
1227                         "except being turned completely off; it will take effect for exported files "
1228                         "only until next restart. The live output quality thus remains at " +
1229                         to_string(flow_initialized_interpolation_quality) + "."));
1230                 msgbox.exec();
1231         }
1232
1233         save_settings();
1234 }
1235
1236 void MainWindow::in_padding_toggled(double seconds, bool checked)
1237 {
1238         if (!checked) {
1239                 return;
1240         }
1241         global_flags.cue_in_point_padding_seconds = seconds;
1242         save_settings();
1243 }
1244
1245 void MainWindow::out_padding_toggled(double seconds, bool checked)
1246 {
1247         if (!checked) {
1248                 return;
1249         }
1250         global_flags.cue_out_point_padding_seconds = seconds;
1251         save_settings();
1252 }
1253
1254 void MainWindow::hide_camera_toggled(unsigned camera_idx, bool checked)
1255 {
1256         displays[camera_idx].hidden = checked;
1257         relayout_displays();
1258 }
1259
1260 void MainWindow::highlight_camera_input(int stream_idx)
1261 {
1262         for (unsigned i = 0; i < num_cameras; ++i) {
1263                 if (unsigned(stream_idx) == i) {
1264                         displays[i].frame->setStyleSheet("background: rgb(0,255,0)");
1265                 } else {
1266                         displays[i].frame->setStyleSheet("");
1267                 }
1268         }
1269         midi_mapper.highlight_camera_input(stream_idx);
1270 }
1271
1272 void MainWindow::enable_or_disable_preview_button()
1273 {
1274         // Follows the logic in preview_clicked().
1275
1276         if (ui->playlist->hasFocus()) {
1277                 // Allow the playlist as preview iff it has focus and something is selected.
1278                 // TODO: Is this part really relevant?
1279                 QItemSelectionModel *selected = ui->playlist->selectionModel();
1280                 if (selected->hasSelection()) {
1281                         ui->preview_btn->setEnabled(true);
1282                         midi_mapper.set_preview_enabled(preview_playing ? MIDIMapper::On : MIDIMapper::Blinking);
1283                         return;
1284                 }
1285         }
1286
1287         // TODO: Perhaps only enable this if something is actually selected.
1288         ui->preview_btn->setEnabled(!cliplist_clips->empty());
1289         if (preview_playing) {
1290                 midi_mapper.set_preview_enabled(MIDIMapper::On);
1291         } else {
1292                 midi_mapper.set_preview_enabled(cliplist_clips->empty() ? MIDIMapper::Off : MIDIMapper::Blinking);
1293         }
1294 }
1295
1296 void MainWindow::enable_or_disable_queue_button()
1297 {
1298         // Follows the logic in queue_clicked().
1299         // TODO: Perhaps only enable this if something is actually selected.
1300
1301         bool enabled;
1302
1303         if (cliplist_clips->empty()) {
1304                 enabled = false;
1305         } else {
1306                 enabled = true;
1307         }
1308
1309         ui->queue_btn->setEnabled(enabled);
1310         midi_mapper.set_queue_enabled(enabled);
1311 }
1312
1313 void MainWindow::set_output_status(const string &status)
1314 {
1315         ui->live_label->setText(QString::fromStdString("Current output (" + status + ")"));
1316         if (live_player != nullptr) {
1317                 live_player->set_pause_status(status);
1318         }
1319
1320         lock_guard<mutex> lock(queue_status_mu);
1321         queue_status = status;
1322 }
1323
1324 pair<string, string> MainWindow::get_queue_status() const
1325 {
1326         lock_guard<mutex> lock(queue_status_mu);
1327         return { queue_status, "text/plain" };
1328 }
1329
1330 void MainWindow::display_frame(unsigned stream_idx, const FrameOnDisk &frame)
1331 {
1332         if (stream_idx >= MAX_STREAMS) {
1333                 fprintf(stderr, "WARNING: Ignoring too-high stream index %u.\n", stream_idx);
1334                 return;
1335         }
1336         if (stream_idx >= num_cameras) {
1337                 post_to_main_thread_and_wait([this, stream_idx] {
1338                         num_cameras = stream_idx + 1;
1339                         change_num_cameras();
1340                 });
1341         }
1342         displays[stream_idx].display->setFrame(stream_idx, frame);
1343 }
1344
1345 void MainWindow::preview()
1346 {
1347         post_to_main_thread([this] {
1348                 preview_clicked();
1349         });
1350 }
1351
1352 void MainWindow::queue()
1353 {
1354         post_to_main_thread([this] {
1355                 queue_clicked();
1356         });
1357 }
1358
1359 void MainWindow::play()
1360 {
1361         post_to_main_thread([this] {
1362                 play_clicked();
1363         });
1364 }
1365
1366 void MainWindow::next()
1367 {
1368         post_to_main_thread([this] {
1369                 next_clicked();
1370         });
1371 }
1372
1373 void MainWindow::toggle_lock()
1374 {
1375         post_to_main_thread([this] {
1376                 ui->speed_lock_btn->setChecked(!ui->speed_lock_btn->isChecked());
1377                 speed_lock_clicked();
1378         });
1379 }
1380
1381 void MainWindow::jog(int delta)
1382 {
1383         post_to_main_thread([this, delta] {
1384                 int64_t pts_delta = delta * (TIMEBASE / 60);  // One click = frame at 60 fps.
1385                 if (ui->playlist->hasFocus()) {
1386                         QModelIndex selected = ui->playlist->selectionModel()->currentIndex();
1387                         if (selected.column() != -1 && selected.row() != -1) {
1388                                 jog_internal(JOG_PLAYLIST, selected.row(), selected.column(), /*stream_idx=*/-1, pts_delta);
1389                         }
1390                 } else if (ui->clip_list->hasFocus()) {
1391                         QModelIndex selected = ui->clip_list->selectionModel()->currentIndex();
1392                         if (cliplist_clips->is_camera_column(selected.column()) &&
1393                             hidden_jog_column != -1) {
1394                                 // See the definition on hidden_jog_column.
1395                                 selected = selected.sibling(selected.row(), hidden_jog_column);
1396                                 ui->clip_list->selectionModel()->setCurrentIndex(selected, QItemSelectionModel::ClearAndSelect);
1397                                 hidden_jog_column = -1;
1398                         }
1399                         if (selected.column() != -1 && selected.row() != -1) {
1400                                 jog_internal(JOG_CLIP_LIST, selected.row(), selected.column(), ui->preview_display->get_stream_idx(), pts_delta);
1401                         }
1402                 }
1403         });
1404 }
1405
1406 void MainWindow::switch_camera(unsigned camera_idx)
1407 {
1408         post_to_main_thread([this, camera_idx] {
1409                 if (camera_idx < num_cameras) {  // TODO: Also make this change a highlighted clip?
1410                         preview_angle_clicked(camera_idx);
1411                 }
1412         });
1413 }
1414
1415 void MainWindow::set_master_speed(float speed)
1416 {
1417         speed = min(max(speed, 0.1f), 2.0f);
1418
1419         post_to_main_thread([this, speed] {
1420                 if (ui->speed_lock_btn->isChecked()) {
1421                         midi_mapper.set_locked(MIDIMapper::Blinking);
1422                         lock_blink_timeout->start(1000);
1423                         return;
1424                 }
1425
1426                 int percent = lrintf(speed * 100.0f);
1427                 ui->speed_slider->blockSignals(true);
1428                 ui->speed_slider->setValue(percent);
1429                 ui->speed_slider->blockSignals(false);
1430                 ui->speed_lock_btn->setText(QString::fromStdString(" " + to_string(percent) + "%"));
1431
1432                 live_player->set_master_speed(speed);
1433                 midi_mapper.set_speed_light(speed);
1434         });
1435 }
1436
1437 void MainWindow::cue_in()
1438 {
1439         post_to_main_thread([this] { cue_in_clicked(); });
1440 }
1441
1442 void MainWindow::cue_out()
1443 {
1444         post_to_main_thread([this] { cue_out_clicked(); });
1445 }
1446
1447 template<class Model>
1448 void MainWindow::replace_model(QTableView *view, Model **model, Model *new_model)
1449 {
1450         QItemSelectionModel *old_selection_model = view->selectionModel();
1451         view->setModel(new_model);
1452         delete *model;
1453         delete old_selection_model;
1454         *model = new_model;
1455         connect(new_model, &Model::any_content_changed, this, &MainWindow::content_changed);
1456 }
1457
1458 void MainWindow::start_tally()
1459 {
1460         http_reply = http.get(QNetworkRequest(QString::fromStdString(global_flags.tally_url)));
1461         connect(http_reply, &QNetworkReply::finished, this, &MainWindow::tally_received);
1462 }
1463
1464 void MainWindow::tally_received()
1465 {
1466         unsigned time_to_next_tally_ms;
1467         if (http_reply->error()) {
1468                 fprintf(stderr, "HTTP get of '%s' failed: %s\n", global_flags.tally_url.c_str(),
1469                         http_reply->errorString().toStdString().c_str());
1470                 ui->live_frame->setStyleSheet("");
1471                 time_to_next_tally_ms = 1000;
1472         } else {
1473                 string contents = http_reply->readAll().toStdString();
1474                 ui->live_frame->setStyleSheet(QString::fromStdString("background: " + contents));
1475                 time_to_next_tally_ms = 100;
1476         }
1477         http_reply->deleteLater();
1478         http_reply = nullptr;
1479
1480         QTimer::singleShot(time_to_next_tally_ms, this, &MainWindow::start_tally);
1481 }