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         // Select the item so that we can jog it.
 392         ui->clip_list->setFocus();
 393         QModelIndex index = cliplist_clips->index(cliplist_clips->size() - 1, int(ClipList::Column::IN));
 394         ui->clip_list->selectionModel()->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect);
 395         ui->clip_list->scrollToBottom();
 396         enable_or_disable_queue_button();
 397 }
 398
 399 void MainWindow::cue_out_clicked()
 400 {
 401         if (cliplist_clips->empty()) {
 402                 return;
 403         }
 404
 405         cliplist_clips->mutable_back()->pts_out = current_pts + lrint(global_flags.cue_out_point_padding_seconds * TIMEBASE);
 406
 407         // Select the item so that we can jog it.
 408         ui->clip_list->setFocus();
 409         QModelIndex index = cliplist_clips->index(cliplist_clips->size() - 1, int(ClipList::Column::OUT));
 410         ui->clip_list->selectionModel()->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect);
 411         ui->clip_list->scrollToBottom();
 412         enable_or_disable_queue_button();
 413 }
 414
 415 void MainWindow::queue_clicked()
 416 {
 417         // See also enable_or_disable_queue_button().
 418
 419         if (cliplist_clips->empty()) {
 420                 return;
 421         }
 422
 423         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 424         if (!selected->hasSelection()) {
 425                 Clip clip = *cliplist_clips->back();
 426                 clip.stream_idx = 0;
 427                 playlist_clips->add_clip(clip);
 428                 playlist_selection_changed();
 429                 ui->playlist->scrollToBottom();
 430                 return;
 431         }
 432
 433         QModelIndex index = selected->currentIndex();
 434         Clip clip = *cliplist_clips->clip(index.row());
 435         if (cliplist_clips->is_camera_column(index.column())) {
 436                 clip.stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 437         } else {
 438                 clip.stream_idx = ui->preview_display->get_stream_idx();
 439         }
 440
 441         playlist_clips->add_clip(clip);
 442         playlist_selection_changed();
 443         ui->playlist->scrollToBottom();
 444         if (!ui->playlist->selectionModel()->hasSelection()) {
 445                 // TODO: Figure out why this doesn't always seem to actually select the row.
 446                 QModelIndex bottom = playlist_clips->index(playlist_clips->size() - 1, 0);
 447                 ui->playlist->setCurrentIndex(bottom);
 448         }
 449 }
 450
 451 void MainWindow::preview_clicked()
 452 {
 453         // See also enable_or_disable_preview_button().
 454
 455         if (ui->playlist->hasFocus()) {
 456                 // Allow the playlist as preview iff it has focus and something is selected.
 457                 QItemSelectionModel *selected = ui->playlist->selectionModel();
 458                 if (selected->hasSelection()) {
 459                         QModelIndex index = selected->currentIndex();
 460                         const Clip &clip = *playlist_clips->clip(index.row());
 461                         preview_player->play(clip);
 462                         preview_playing = true;
 463                         enable_or_disable_preview_button();
 464                         return;
 465                 }
 466         }
 467
 468         if (cliplist_clips->empty())
 469                 return;
 470
 471         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 472         if (!selected->hasSelection()) {
 473                 preview_player->play(*cliplist_clips->back());
 474                 preview_playing = true;
 475                 enable_or_disable_preview_button();
 476                 return;
 477         }
 478
 479         QModelIndex index = selected->currentIndex();
 480         Clip clip = *cliplist_clips->clip(index.row());
 481         if (cliplist_clips->is_camera_column(index.column())) {
 482                 clip.stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 483         } else {
 484                 clip.stream_idx = ui->preview_display->get_stream_idx();
 485         }
 486         if (clip.pts_out == -1) {
 487                 clip.pts_out = clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
 488         }
 489         preview_player->play(clip);
 490         preview_playing = true;
 491         enable_or_disable_preview_button();
 492 }
 493
 494 void MainWindow::preview_angle_clicked(unsigned stream_idx)
 495 {
 496         preview_player->override_angle(stream_idx);
 497
 498         // Change the selection if we were previewing a clip from the clip list.
 499         // (The only other thing we could be showing is a pts scrub, and if so,
 500         // that would be selected.)
 501         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 502         if (selected->hasSelection()) {
 503                 QModelIndex cell = selected->selectedIndexes()[0];
 504                 int column = int(ClipList::Column::CAMERA_1) + stream_idx;
 505                 selected->setCurrentIndex(cell.sibling(cell.row(), column), QItemSelectionModel::ClearAndSelect);
 506         }
 507 }
 508
 509 void MainWindow::playlist_duplicate()
 510 {
 511         QItemSelectionModel *selected = ui->playlist->selectionModel();
 512         if (!selected->hasSelection()) {
 513                 // Should have been grayed out, but OK.
 514                 return;
 515         }
 516         QModelIndexList rows = selected->selectedRows();
 517         int first = rows.front().row(), last = rows.back().row();
 518         playlist_clips->duplicate_clips(first, last);
 519         playlist_selection_changed();
 520 }
 521
 522 void MainWindow::playlist_remove()
 523 {
 524         QItemSelectionModel *selected = ui->playlist->selectionModel();
 525         if (!selected->hasSelection()) {
 526                 // Should have been grayed out, but OK.
 527                 return;
 528         }
 529         QModelIndexList rows = selected->selectedRows();
 530         int first = rows.front().row(), last = rows.back().row();
 531         playlist_clips->erase_clips(first, last);
 532
 533         // TODO: select the next one in the list?
 534
 535         playlist_selection_changed();
 536 }
 537
 538 void MainWindow::playlist_move(int delta)
 539 {
 540         QItemSelectionModel *selected = ui->playlist->selectionModel();
 541         if (!selected->hasSelection()) {
 542                 // Should have been grayed out, but OK.
 543                 return;
 544         }
 545
 546         QModelIndexList rows = selected->selectedRows();
 547         int first = rows.front().row(), last = rows.back().row();
 548         if ((delta == -1 && first == 0) ||
 549             (delta == 1 && size_t(last) == playlist_clips->size() - 1)) {
 550                 // Should have been grayed out, but OK.
 551                 return;
 552         }
 553
 554         playlist_clips->move_clips(first, last, delta);
 555         playlist_selection_changed();
 556 }
 557
 558 void MainWindow::jog_internal(JogDestination jog_destination, int row, int column, int stream_idx, int pts_delta)
 559 {
 560         constexpr int camera_pts_per_pixel = 1500;  // One click of most mice (15 degrees), multiplied by the default wheel_sensitivity.
 561
 562         int in_column, out_column, camera_column;
 563         if (jog_destination == JOG_CLIP_LIST) {
 564                 in_column = int(ClipList::Column::IN);
 565                 out_column = int(ClipList::Column::OUT);
 566                 camera_column = -1;
 567         } else if (jog_destination == JOG_PLAYLIST) {
 568                 in_column = int(PlayList::Column::IN);
 569                 out_column = int(PlayList::Column::OUT);
 570                 camera_column = int(PlayList::Column::CAMERA);
 571         } else {
 572                 assert(false);
 573         }
 574
 575         currently_deferring_model_changes = true;
 576         {
 577                 current_change_id = (jog_destination == JOG_CLIP_LIST) ? "cliplist:" : "playlist:";
 578                 ClipProxy clip = (jog_destination == JOG_CLIP_LIST) ? cliplist_clips->mutable_clip(row) : playlist_clips->mutable_clip(row);
 579                 if (jog_destination == JOG_PLAYLIST) {
 580                         stream_idx = clip->stream_idx;
 581                 }
 582
 583                 if (column == in_column) {
 584                         current_change_id += "in:" + to_string(row);
 585                         int64_t pts = clip->pts_in + pts_delta;
 586                         set_pts_in(pts, current_pts, clip);
 587                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 588                 } else if (column == out_column) {
 589                         current_change_id += "out:" + to_string(row);
 590                         int64_t pts = clip->pts_out + pts_delta;
 591                         pts = std::max(pts, clip->pts_in);
 592                         pts = std::min(pts, current_pts);
 593                         clip->pts_out = pts;
 594                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 595                 } else if (column == camera_column) {
 596                         current_change_id += "camera:" + to_string(row);
 597                         int angle_degrees = pts_delta;
 598                         if (last_mousewheel_camera_row == row) {
 599                                 angle_degrees += leftover_angle_degrees;
 600                         }
 601
 602                         int stream_idx = clip->stream_idx + angle_degrees / camera_pts_per_pixel;
 603                         stream_idx = std::max(stream_idx, 0);
 604                         stream_idx = std::min<int>(stream_idx, num_cameras - 1);
 605                         clip->stream_idx = stream_idx;
 606
 607                         last_mousewheel_camera_row = row;
 608                         leftover_angle_degrees = angle_degrees % camera_pts_per_pixel;
 609
 610                         // Don't update the live view, that's rarely what the operator wants.
 611                 }
 612         }
 613         currently_deferring_model_changes = false;
 614 }
 615
 616 void MainWindow::defer_timer_expired()
 617 {
 618         state_changed(deferred_state);
 619 }
 620
 621 void MainWindow::content_changed()
 622 {
 623         // If we are playing, update the part of the playlist that's not playing yet.
 624         vector<ClipWithID> clips;
 625         for (unsigned row = 0; row < playlist_clips->size(); ++row) {
 626                 clips.emplace_back(*playlist_clips->clip_with_id(row));
 627         }
 628         live_player->splice_play(clips);
 629
 630         // Serialize the state.
 631         if (defer_timeout->isActive() &&
 632             (!currently_deferring_model_changes || deferred_change_id != current_change_id)) {
 633                 // There's some deferred event waiting, but this event is unrelated.
 634                 // So it's time to short-circuit that timer and do the work it wanted to do.
 635                 defer_timeout->stop();
 636                 state_changed(deferred_state);
 637         }
 638         StateProto state;
 639         *state.mutable_clip_list() = cliplist_clips->serialize();
 640         *state.mutable_play_list() = playlist_clips->serialize();
 641         if (currently_deferring_model_changes) {
 642                 deferred_change_id = current_change_id;
 643                 deferred_state = std::move(state);
 644                 defer_timeout->start(200);
 645                 return;
 646         }
 647         state_changed(state);
 648 }
 649
 650 void MainWindow::state_changed(const StateProto &state)
 651 {
 652         db.store_state(state);
 653
 654         redo_stack.clear();
 655         ui->redo_action->setEnabled(false);
 656
 657         undo_stack.push_back(state);
 658         ui->undo_action->setEnabled(undo_stack.size() > 1);
 659
 660         // Make sure it doesn't grow without bounds.
 661         while (undo_stack.size() >= 100) {
 662                 undo_stack.pop_front();
 663         }
 664 }
 665
 666 void MainWindow::save_settings()
 667 {
 668         SettingsProto settings;
 669         settings.set_interpolation_quality(global_flags.interpolation_quality + 1);
 670         settings.set_cue_in_point_padding_seconds(global_flags.cue_in_point_padding_seconds);
 671         settings.set_cue_out_point_padding_seconds(global_flags.cue_out_point_padding_seconds);
 672         db.store_settings(settings);
 673 }
 674
 675 void MainWindow::lock_blink_timer_expired()
 676 {
 677         midi_mapper.set_locked(MIDIMapper::LightState(ui->speed_lock_btn->isChecked()));  // Presumably On, or the timer should have been canceled.
 678 }
 679
 680 void MainWindow::play_clicked()
 681 {
 682         QItemSelectionModel *selected = ui->playlist->selectionModel();
 683         if (!selected->hasSelection()) {
 684                 return;
 685         }
 686         unsigned start_row = selected->selectedRows(0)[0].row();
 687
 688         vector<ClipWithID> clips;
 689         for (unsigned row = start_row; row < playlist_clips->size(); ++row) {
 690                 ClipWithID clip = *playlist_clips->clip_with_id(row);
 691                 if (clip.clip.pts_out == -1) {
 692                         clip.clip.pts_out = clip.clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
 693                 }
 694                 clips.emplace_back(clip);
 695         }
 696         live_player->play(clips);
 697         playlist_clips->set_progress({ { start_row, 0.0f } });
 698         ui->playlist->selectionModel()->clear();
 699         ui->stop_btn->setEnabled(true);
 700         playlist_selection_changed();
 701 }
 702
 703 void MainWindow::next_clicked()
 704 {
 705         live_player->skip_to_next();
 706 }
 707
 708 void MainWindow::stop_clicked()
 709 {
 710         Clip fake_clip;
 711         fake_clip.pts_in = 0;
 712         fake_clip.pts_out = 0;
 713         playlist_clips->set_progress({});
 714         live_player->play(fake_clip);
 715         ui->stop_btn->setEnabled(false);
 716         playlist_selection_changed();
 717 }
 718
 719 void MainWindow::speed_slider_changed(int percent)
 720 {
 721         float speed = percent / 100.0f;
 722         ui->speed_lock_btn->setText(QString::fromStdString(" " + to_string(percent) + "%"));
 723         live_player->set_master_speed(speed);
 724         midi_mapper.set_speed_light(speed);
 725 }
 726
 727 void MainWindow::speed_lock_clicked()
 728 {
 729         // TODO: Make for a less abrupt transition if we're not already at 100%.
 730         ui->speed_slider->setValue(100);  // Also actually sets the master speed and updates the label.
 731         ui->speed_slider->setEnabled(!ui->speed_lock_btn->isChecked());
 732         midi_mapper.set_locked(MIDIMapper::LightState(ui->speed_lock_btn->isChecked()));
 733         lock_blink_timeout->stop();
 734 }
 735
 736 void MainWindow::preview_player_done()
 737 {
 738         preview_playing = false;
 739         enable_or_disable_preview_button();
 740 }
 741
 742 void MainWindow::live_player_done()
 743 {
 744         playlist_clips->set_progress({});
 745         ui->stop_btn->setEnabled(false);
 746         playlist_selection_changed();
 747 }
 748
 749 void MainWindow::live_player_clip_progress(const map<uint64_t, double> &progress, TimeRemaining time_remaining)
 750 {
 751         playlist_clips->set_progress(progress);
 752         set_output_status(format_duration(time_remaining) + " left");
 753 }
 754
 755 void MainWindow::resizeEvent(QResizeEvent *event)
 756 {
 757         QMainWindow::resizeEvent(event);
 758
 759         // Ask for a relayout, but only after the event loop is done doing relayout
 760         // on everything else.
 761         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 762 }
 763
 764 void MainWindow::relayout()
 765 {
 766         ui->live_display->setMinimumWidth(ui->live_display->height() * 16 / 9);
 767         ui->preview_display->setMinimumWidth(ui->preview_display->height() * 16 / 9);
 768 }
 769
 770 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 771 {
 772         constexpr int dead_zone_pixels = 3;  // To avoid that simple clicks get misinterpreted.
 773         int scrub_sensitivity = 100;  // pts units per pixel.
 774         int wheel_sensitivity = 100;  // pts units per degree.
 775
 776         if (event->type() == QEvent::FocusIn || event->type() == QEvent::FocusOut) {
 777                 enable_or_disable_preview_button();
 778                 playlist_selection_changed();
 779                 hidden_jog_column = -1;
 780         }
 781
 782         unsigned stream_idx = ui->preview_display->get_stream_idx();
 783
 784         if (watched == ui->clip_list) {
 785                 if (event->type() == QEvent::FocusOut) {
 786                         highlight_camera_input(-1);
 787                 }
 788                 return false;
 789         }
 790
 791         if (event->type() != QEvent::Wheel) {
 792                 last_mousewheel_camera_row = -1;
 793         }
 794
 795         if (event->type() == QEvent::MouseButtonPress) {
 796                 QMouseEvent *mouse = (QMouseEvent *)event;
 797
 798                 QTableView *destination;
 799                 ScrubType type;
 800
 801                 if (watched == ui->clip_list->viewport()) {
 802                         destination = ui->clip_list;
 803                         type = SCRUBBING_CLIP_LIST;
 804                 } else if (watched == ui->playlist->viewport()) {
 805                         destination = ui->playlist;
 806                         type = SCRUBBING_PLAYLIST;
 807                 } else {
 808                         return false;
 809                 }
 810                 int column = destination->columnAt(mouse->x());
 811                 int row = destination->rowAt(mouse->y());
 812                 if (column == -1 || row == -1)
 813                         return false;
 814
 815                 if (type == SCRUBBING_CLIP_LIST) {
 816                         if (ClipList::Column(column) == ClipList::Column::IN) {
 817                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_in;
 818                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 819                         } else if (ClipList::Column(column) == ClipList::Column::OUT) {
 820                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_out;
 821                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 822                         } else {
 823                                 return false;
 824                         }
 825                 } else {
 826                         if (PlayList::Column(column) == PlayList::Column::IN) {
 827                                 scrub_pts_origin = playlist_clips->clip(row)->pts_in;
 828                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 829                         } else if (PlayList::Column(column) == PlayList::Column::OUT) {
 830                                 scrub_pts_origin = playlist_clips->clip(row)->pts_out;
 831                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 832                         } else {
 833                                 return false;
 834                         }
 835                 }
 836
 837                 scrubbing = true;
 838                 scrub_row = row;
 839                 scrub_column = column;
 840                 scrub_x_origin = mouse->x();
 841                 scrub_type = type;
 842         } else if (event->type() == QEvent::MouseMove) {
 843                 QMouseEvent *mouse = (QMouseEvent *)event;
 844                 if (mouse->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 845                         scrub_sensitivity *= 10;
 846                         wheel_sensitivity *= 10;
 847                         if (mouse->modifiers() & Qt::KeyboardModifier::ControlModifier) {
 848                                 // Ctrl+Shift is a super-modifier, meant only for things like “go back two hours”.
 849                                 scrub_sensitivity *= 100;
 850                                 wheel_sensitivity *= 100;
 851                         }
 852                 }
 853                 if (mouse->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 854                         scrub_sensitivity /= 10;
 855                         wheel_sensitivity /= 10;
 856                 }
 857                 if (scrubbing) {
 858                         int offset = mouse->x() - scrub_x_origin;
 859                         int adjusted_offset;
 860                         if (offset >= dead_zone_pixels) {
 861                                 adjusted_offset = offset - dead_zone_pixels;
 862                         } else if (offset < -dead_zone_pixels) {
 863                                 adjusted_offset = offset + dead_zone_pixels;
 864                         } else {
 865                                 adjusted_offset = 0;
 866                         }
 867
 868                         int64_t pts = scrub_pts_origin + adjusted_offset * scrub_sensitivity;
 869                         currently_deferring_model_changes = true;
 870                         if (scrub_type == SCRUBBING_CLIP_LIST) {
 871                                 ClipProxy clip = cliplist_clips->mutable_clip(scrub_row);
 872                                 if (scrub_column == int(ClipList::Column::IN)) {
 873                                         current_change_id = "cliplist:in:" + to_string(scrub_row);
 874                                         set_pts_in(pts, current_pts, clip);
 875                                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 876                                 } else {
 877                                         current_change_id = "cliplist:out" + to_string(scrub_row);
 878                                         pts = std::max(pts, clip->pts_in);
 879                                         pts = std::min(pts, current_pts);
 880                                         clip->pts_out = pts;
 881                                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 882                                 }
 883                         } else {
 884                                 ClipProxy clip = playlist_clips->mutable_clip(scrub_row);
 885                                 if (scrub_column == int(PlayList::Column::IN)) {
 886                                         current_change_id = "playlist:in:" + to_string(scrub_row);
 887                                         set_pts_in(pts, current_pts, clip);
 888                                         preview_single_frame(pts, clip->stream_idx, FIRST_AT_OR_AFTER);
 889                                 } else {
 890                                         current_change_id = "playlist:out:" + to_string(scrub_row);
 891                                         pts = std::max(pts, clip->pts_in);
 892                                         pts = std::min(pts, current_pts);
 893                                         clip->pts_out = pts;
 894                                         preview_single_frame(pts, clip->stream_idx, LAST_BEFORE);
 895                                 }
 896                         }
 897                         currently_deferring_model_changes = false;
 898
 899                         return true;  // Don't use this mouse movement for selecting things.
 900                 }
 901         } else if (event->type() == QEvent::Wheel) {
 902                 QWheelEvent *wheel = (QWheelEvent *)event;
 903                 int angle_delta = wheel->angleDelta().y();
 904                 if (wheel->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 905                         scrub_sensitivity *= 10;
 906                         wheel_sensitivity *= 10;
 907                         if (wheel->modifiers() & Qt::KeyboardModifier::ControlModifier) {
 908                                 // Ctrl+Shift is a super-modifier, meant only for things like “go back two hours”.
 909                                 scrub_sensitivity *= 100;
 910                                 wheel_sensitivity *= 100;
 911                         }
 912                 }
 913                 if (wheel->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 914                         scrub_sensitivity /= 10;
 915                         wheel_sensitivity /= 10;
 916                         angle_delta = wheel->angleDelta().x();  // Qt ickiness.
 917                 }
 918
 919                 QTableView *destination;
 920                 JogDestination jog_destination;
 921                 if (watched == ui->clip_list->viewport()) {
 922                         destination = ui->clip_list;
 923                         jog_destination = JOG_CLIP_LIST;
 924                         last_mousewheel_camera_row = -1;
 925                 } else if (watched == ui->playlist->viewport()) {
 926                         destination = ui->playlist;
 927                         jog_destination = JOG_PLAYLIST;
 928                         if (destination->columnAt(wheel->x()) != int(PlayList::Column::CAMERA)) {
 929                                 last_mousewheel_camera_row = -1;
 930                         }
 931                 } else {
 932                         last_mousewheel_camera_row = -1;
 933                         return false;
 934                 }
 935
 936                 int column = destination->columnAt(wheel->x());
 937                 int row = destination->rowAt(wheel->y());
 938                 if (column == -1 || row == -1)
 939                         return false;
 940
 941                 // Only adjust pts with the wheel if the given row is selected.
 942                 if (!destination->hasFocus() ||
 943                     row != destination->selectionModel()->currentIndex().row()) {
 944                         return false;
 945                 }
 946
 947                 jog_internal(jog_destination, row, column, stream_idx, angle_delta * wheel_sensitivity);
 948                 return true;  // Don't scroll.
 949         } else if (event->type() == QEvent::MouseButtonRelease) {
 950                 scrubbing = false;
 951         }
 952         return false;
 953 }
 954
 955 void MainWindow::preview_single_frame(int64_t pts, unsigned stream_idx, MainWindow::Rounding rounding)
 956 {
 957         if (rounding == LAST_BEFORE) {
 958                 lock_guard<mutex> lock(frame_mu);
 959                 if (frames[stream_idx].empty())
 960                         return;
 961                 auto it = find_last_frame_before(frames[stream_idx], pts);
 962                 if (it != frames[stream_idx].end()) {
 963                         pts = it->pts;
 964                 }
 965         } else {
 966                 assert(rounding == FIRST_AT_OR_AFTER);
 967                 lock_guard<mutex> lock(frame_mu);
 968                 if (frames[stream_idx].empty())
 969                         return;
 970                 auto it = find_first_frame_at_or_after(frames[stream_idx], pts);
 971                 if (it != frames[stream_idx].end()) {
 972                         pts = it->pts;
 973                 }
 974         }
 975
 976         Clip fake_clip;
 977         fake_clip.pts_in = pts;
 978         fake_clip.pts_out = pts + 1;
 979         fake_clip.stream_idx = stream_idx;
 980         preview_player->play(fake_clip);
 981 }
 982
 983 void MainWindow::playlist_selection_changed()
 984 {
 985         enable_or_disable_preview_button();
 986
 987         QItemSelectionModel *selected = ui->playlist->selectionModel();
 988         bool any_selected = selected->hasSelection();
 989         ui->playlist_duplicate_btn->setEnabled(any_selected);
 990         ui->playlist_remove_btn->setEnabled(any_selected);
 991         ui->playlist_move_up_btn->setEnabled(
 992                 any_selected && selected->selectedRows().front().row() > 0);
 993         ui->playlist_move_down_btn->setEnabled(
 994                 any_selected && selected->selectedRows().back().row() < int(playlist_clips->size()) - 1);
 995
 996         ui->play_btn->setEnabled(any_selected);
 997         ui->next_btn->setEnabled(ui->stop_btn->isEnabled());  // TODO: Perhaps not if we're on the last clip?
 998         midi_mapper.set_next_ready(ui->next_btn->isEnabled() ? MIDIMapper::On : MIDIMapper::Off);
 999
1000         // NOTE: The hidden button is still reachable by keyboard or MIDI.
1001         if (any_selected) {
1002                 ui->play_btn->setVisible(true);
1003         } else if (ui->stop_btn->isEnabled()) {  // Playing.
1004                 ui->play_btn->setVisible(false);
1005         } else {
1006                 ui->play_btn->setVisible(true);
1007         }
1008         ui->next_btn->setVisible(!ui->play_btn->isVisible());
1009
1010         if (ui->stop_btn->isEnabled()) {  // Playing.
1011                 midi_mapper.set_play_enabled(MIDIMapper::On);
1012         } else if (any_selected) {
1013                 midi_mapper.set_play_enabled(MIDIMapper::Blinking);
1014         } else {
1015                 midi_mapper.set_play_enabled(MIDIMapper::Off);
1016         }
1017
1018         if (!any_selected) {
1019                 set_output_status("paused");
1020         } else {
1021                 vector<ClipWithID> clips;
1022                 for (size_t row = selected->selectedRows().front().row(); row < playlist_clips->size(); ++row) {
1023                         clips.emplace_back(*playlist_clips->clip_with_id(row));
1024                 }
1025                 TimeRemaining remaining = compute_total_time(clips);
1026                 set_output_status(format_duration(remaining) + " ready");
1027         }
1028 }
1029
1030 void MainWindow::clip_list_selection_changed(const QModelIndex &current, const QModelIndex &previous)
1031 {
1032         int camera_selected = -1;
1033         if (cliplist_clips->is_camera_column(current.column())) {
1034                 camera_selected = current.column() - int(ClipList::Column::CAMERA_1);
1035
1036                 // See the comment on hidden_jog_column.
1037                 if (current.row() != previous.row()) {
1038                         hidden_jog_column = -1;
1039                 } else if (hidden_jog_column == -1) {
1040                         hidden_jog_column = previous.column();
1041                 }
1042         } else {
1043                 hidden_jog_column = -1;
1044         }
1045         highlight_camera_input(camera_selected);
1046         enable_or_disable_queue_button();
1047 }
1048
1049 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
1050 {
1051         char time_str[256];
1052         if (estimated_seconds_left < 60.0) {
1053                 strcpy(time_str, "<font color=\"red\">Less than a minute</font>");
1054         } else if (estimated_seconds_left < 1800.0) {  // Less than half an hour: Xm Ys (red).
1055                 int s = lrintf(estimated_seconds_left);
1056                 int m = s / 60;
1057                 s %= 60;
1058                 snprintf(time_str, sizeof(time_str), "<font color=\"red\">%dm %ds</font>", m, s);
1059         } else if (estimated_seconds_left < 3600.0) {  // Less than an hour: Xm.
1060                 int m = lrintf(estimated_seconds_left / 60.0);
1061                 snprintf(time_str, sizeof(time_str), "%dm", m);
1062         } else if (estimated_seconds_left < 36000.0) {  // Less than ten hours: Xh Ym.
1063                 int m = lrintf(estimated_seconds_left / 60.0);
1064                 int h = m / 60;
1065                 m %= 60;
1066                 snprintf(time_str, sizeof(time_str), "%dh %dm", h, m);
1067         } else {  // More than ten hours: Xh.
1068                 int h = lrintf(estimated_seconds_left / 3600.0);
1069                 snprintf(time_str, sizeof(time_str), "%dh", h);
1070         }
1071         char buf[256];
1072         snprintf(buf, sizeof(buf), "Disk free: %'.0f MB (approx. %s)", free_bytes / 1048576.0, time_str);
1073
1074         std::string label = buf;
1075
1076         post_to_main_thread([this, label] {
1077                 disk_free_label->setText(QString::fromStdString(label));
1078                 ui->menuBar->setCornerWidget(disk_free_label);  // Need to set this again for the sizing to get right.
1079         });
1080 }
1081
1082 void MainWindow::midi_mapping_triggered()
1083 {
1084         MIDIMappingDialog(&midi_mapper).exec();
1085 }
1086
1087 void MainWindow::exit_triggered()
1088 {
1089         close();
1090 }
1091
1092 void MainWindow::export_cliplist_clip_multitrack_triggered()
1093 {
1094         QItemSelectionModel *selected = ui->clip_list->selectionModel();
1095         if (!selected->hasSelection()) {
1096                 QMessageBox msgbox;
1097                 msgbox.setText("No clip selected in the clip list. Select one and try exporting again.");
1098                 msgbox.exec();
1099                 return;
1100         }
1101
1102         QModelIndex index = selected->currentIndex();
1103         Clip clip = *cliplist_clips->clip(index.row());
1104         QString filename = QFileDialog::getSaveFileName(this,
1105                 "Export multitrack clip", QString(), tr("Matroska video files (*.mkv)"));
1106         if (filename.isNull()) {
1107                 // Cancel.
1108                 return;
1109         }
1110         if (!filename.endsWith(".mkv")) {
1111                 filename += ".mkv";
1112         }
1113         export_multitrack_clip(filename.toStdString(), clip);
1114 }
1115
1116 void MainWindow::export_playlist_clip_interpolated_triggered()
1117 {
1118         QItemSelectionModel *selected = ui->playlist->selectionModel();
1119         if (!selected->hasSelection()) {
1120                 QMessageBox msgbox;
1121                 msgbox.setText("No clip selected in the playlist. Select one and try exporting again.");
1122                 msgbox.exec();
1123                 return;
1124         }
1125
1126         QString filename = QFileDialog::getSaveFileName(this,
1127                 "Export interpolated clip", QString(), tr("Matroska video files (*.mkv)"));
1128         if (filename.isNull()) {
1129                 // Cancel.
1130                 return;
1131         }
1132         if (!filename.endsWith(".mkv")) {
1133                 filename += ".mkv";
1134         }
1135
1136         vector<Clip> clips;
1137         QModelIndexList rows = selected->selectedRows();
1138         for (QModelIndex index : rows) {
1139                 clips.push_back(*playlist_clips->clip(index.row()));
1140         }
1141         export_interpolated_clip(filename.toStdString(), clips);
1142 }
1143
1144 void MainWindow::manual_triggered()
1145 {
1146         if (!QDesktopServices::openUrl(QUrl("https://nageru.sesse.net/doc/"))) {
1147                 QMessageBox msgbox;
1148                 msgbox.setText("Could not launch manual in web browser.\nPlease see https://nageru.sesse.net/doc/ manually.");
1149                 msgbox.exec();
1150         }
1151 }
1152
1153 void MainWindow::about_triggered()
1154 {
1155         AboutDialog("Futatabi", "Multicamera slow motion video server").exec();
1156 }
1157
1158 void MainWindow::undo_triggered()
1159 {
1160         // Finish any deferred action.
1161         if (defer_timeout->isActive()) {
1162                 defer_timeout->stop();
1163                 state_changed(deferred_state);
1164         }
1165
1166         StateProto redo_state;
1167         *redo_state.mutable_clip_list() = cliplist_clips->serialize();
1168         *redo_state.mutable_play_list() = playlist_clips->serialize();
1169         redo_stack.push_back(std::move(redo_state));
1170         ui->redo_action->setEnabled(true);
1171
1172         assert(undo_stack.size() > 1);
1173
1174         // Pop off the current state, which is always at the top of the stack.
1175         undo_stack.pop_back();
1176
1177         StateProto state = undo_stack.back();
1178         ui->undo_action->setEnabled(undo_stack.size() > 1);
1179
1180         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1181         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1182
1183         db.store_state(state);
1184 }
1185
1186 void MainWindow::redo_triggered()
1187 {
1188         assert(!redo_stack.empty());
1189
1190         ui->undo_action->setEnabled(true);
1191         ui->redo_action->setEnabled(true);
1192
1193         undo_stack.push_back(std::move(redo_stack.back()));
1194         redo_stack.pop_back();
1195         ui->undo_action->setEnabled(true);
1196         ui->redo_action->setEnabled(!redo_stack.empty());
1197
1198         const StateProto &state = undo_stack.back();
1199         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1200         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1201
1202         db.store_state(state);
1203 }
1204
1205 void MainWindow::quality_toggled(int quality, bool checked)
1206 {
1207         if (!checked) {
1208                 return;
1209         }
1210         global_flags.interpolation_quality = quality;
1211         if (quality != 0 &&  // Turning interpolation off is always possible.
1212             quality != flow_initialized_interpolation_quality) {
1213                 QMessageBox msgbox;
1214                 msgbox.setText(QString::fromStdString(
1215                         "The interpolation quality for the main output cannot be changed at runtime, "
1216                         "except being turned completely off; it will take effect for exported files "
1217                         "only until next restart. The live output quality thus remains at " +
1218                         to_string(flow_initialized_interpolation_quality) + "."));
1219                 msgbox.exec();
1220         }
1221
1222         save_settings();
1223 }
1224
1225 void MainWindow::in_padding_toggled(double seconds, bool checked)
1226 {
1227         if (!checked) {
1228                 return;
1229         }
1230         global_flags.cue_in_point_padding_seconds = seconds;
1231         save_settings();
1232 }
1233
1234 void MainWindow::out_padding_toggled(double seconds, bool checked)
1235 {
1236         if (!checked) {
1237                 return;
1238         }
1239         global_flags.cue_out_point_padding_seconds = seconds;
1240         save_settings();
1241 }
1242
1243 void MainWindow::hide_camera_toggled(unsigned camera_idx, bool checked)
1244 {
1245         displays[camera_idx].hidden = checked;
1246         relayout_displays();
1247 }
1248
1249 void MainWindow::highlight_camera_input(int stream_idx)
1250 {
1251         for (unsigned i = 0; i < num_cameras; ++i) {
1252                 if (unsigned(stream_idx) == i) {
1253                         displays[i].frame->setStyleSheet("background: rgb(0,255,0)");
1254                 } else {
1255                         displays[i].frame->setStyleSheet("");
1256                 }
1257         }
1258         midi_mapper.highlight_camera_input(stream_idx);
1259 }
1260
1261 void MainWindow::enable_or_disable_preview_button()
1262 {
1263         // Follows the logic in preview_clicked().
1264
1265         if (ui->playlist->hasFocus()) {
1266                 // Allow the playlist as preview iff it has focus and something is selected.
1267                 // TODO: Is this part really relevant?
1268                 QItemSelectionModel *selected = ui->playlist->selectionModel();
1269                 if (selected->hasSelection()) {
1270                         ui->preview_btn->setEnabled(true);
1271                         midi_mapper.set_preview_enabled(preview_playing ? MIDIMapper::On : MIDIMapper::Blinking);
1272                         return;
1273                 }
1274         }
1275
1276         // TODO: Perhaps only enable this if something is actually selected.
1277         ui->preview_btn->setEnabled(!cliplist_clips->empty());
1278         if (preview_playing) {
1279                 midi_mapper.set_preview_enabled(MIDIMapper::On);
1280         } else {
1281                 midi_mapper.set_preview_enabled(cliplist_clips->empty() ? MIDIMapper::Off : MIDIMapper::Blinking);
1282         }
1283 }
1284
1285 void MainWindow::enable_or_disable_queue_button()
1286 {
1287         // Follows the logic in queue_clicked().
1288         // TODO: Perhaps only enable this if something is actually selected.
1289
1290         bool enabled;
1291
1292         if (cliplist_clips->empty()) {
1293                 enabled = false;
1294         } else {
1295                 enabled = true;
1296         }
1297
1298         ui->queue_btn->setEnabled(enabled);
1299         midi_mapper.set_queue_enabled(enabled);
1300 }
1301
1302 void MainWindow::set_output_status(const string &status)
1303 {
1304         ui->live_label->setText(QString::fromStdString("Current output (" + status + ")"));
1305         if (live_player != nullptr) {
1306                 live_player->set_pause_status(status);
1307         }
1308
1309         lock_guard<mutex> lock(queue_status_mu);
1310         queue_status = status;
1311 }
1312
1313 pair<string, string> MainWindow::get_queue_status() const
1314 {
1315         lock_guard<mutex> lock(queue_status_mu);
1316         return { queue_status, "text/plain" };
1317 }
1318
1319 void MainWindow::display_frame(unsigned stream_idx, const FrameOnDisk &frame)
1320 {
1321         if (stream_idx >= MAX_STREAMS) {
1322                 fprintf(stderr, "WARNING: Ignoring too-high stream index %u.\n", stream_idx);
1323                 return;
1324         }
1325         if (stream_idx >= num_cameras) {
1326                 post_to_main_thread_and_wait([this, stream_idx] {
1327                         num_cameras = stream_idx + 1;
1328                         change_num_cameras();
1329                 });
1330         }
1331         displays[stream_idx].display->setFrame(stream_idx, frame);
1332 }
1333
1334 void MainWindow::preview()
1335 {
1336         post_to_main_thread([this] {
1337                 preview_clicked();
1338         });
1339 }
1340
1341 void MainWindow::queue()
1342 {
1343         post_to_main_thread([this] {
1344                 queue_clicked();
1345         });
1346 }
1347
1348 void MainWindow::play()
1349 {
1350         post_to_main_thread([this] {
1351                 play_clicked();
1352         });
1353 }
1354
1355 void MainWindow::next()
1356 {
1357         post_to_main_thread([this] {
1358                 next_clicked();
1359         });
1360 }
1361
1362 void MainWindow::toggle_lock()
1363 {
1364         post_to_main_thread([this] {
1365                 ui->speed_lock_btn->setChecked(!ui->speed_lock_btn->isChecked());
1366                 speed_lock_clicked();
1367         });
1368 }
1369
1370 void MainWindow::jog(int delta)
1371 {
1372         post_to_main_thread([this, delta] {
1373                 int64_t pts_delta = delta * (TIMEBASE / 60);  // One click = frame at 60 fps.
1374                 if (ui->playlist->hasFocus()) {
1375                         QModelIndex selected = ui->playlist->selectionModel()->currentIndex();
1376                         if (selected.column() != -1 && selected.row() != -1) {
1377                                 jog_internal(JOG_PLAYLIST, selected.row(), selected.column(), /*stream_idx=*/-1, pts_delta);
1378                         }
1379                 } else if (ui->clip_list->hasFocus()) {
1380                         QModelIndex selected = ui->clip_list->selectionModel()->currentIndex();
1381                         if (cliplist_clips->is_camera_column(selected.column()) &&
1382                             hidden_jog_column != -1) {
1383                                 // See the definition on hidden_jog_column.
1384                                 selected = selected.sibling(selected.row(), hidden_jog_column);
1385                                 ui->clip_list->selectionModel()->setCurrentIndex(selected, QItemSelectionModel::ClearAndSelect);
1386                                 hidden_jog_column = -1;
1387                         }
1388                         if (selected.column() != -1 && selected.row() != -1) {
1389                                 jog_internal(JOG_CLIP_LIST, selected.row(), selected.column(), ui->preview_display->get_stream_idx(), pts_delta);
1390                         }
1391                 }
1392         });
1393 }
1394
1395 void MainWindow::switch_camera(unsigned camera_idx)
1396 {
1397         post_to_main_thread([this, camera_idx] {
1398                 if (camera_idx < num_cameras) {  // TODO: Also make this change a highlighted clip?
1399                         preview_angle_clicked(camera_idx);
1400                 }
1401         });
1402 }
1403
1404 void MainWindow::set_master_speed(float speed)
1405 {
1406         speed = min(max(speed, 0.1f), 2.0f);
1407
1408         post_to_main_thread([this, speed] {
1409                 if (ui->speed_lock_btn->isChecked()) {
1410                         midi_mapper.set_locked(MIDIMapper::Blinking);
1411                         lock_blink_timeout->start(1000);
1412                         return;
1413                 }
1414
1415                 int percent = lrintf(speed * 100.0f);
1416                 ui->speed_slider->blockSignals(true);
1417                 ui->speed_slider->setValue(percent);
1418                 ui->speed_slider->blockSignals(false);
1419                 ui->speed_lock_btn->setText(QString::fromStdString(" " + to_string(percent) + "%"));
1420
1421                 live_player->set_master_speed(speed);
1422                 midi_mapper.set_speed_light(speed);
1423         });
1424 }
1425
1426 void MainWindow::cue_in()
1427 {
1428         post_to_main_thread([this] { cue_in_clicked(); });
1429 }
1430
1431 void MainWindow::cue_out()
1432 {
1433         post_to_main_thread([this] { cue_out_clicked(); });
1434 }
1435
1436 template<class Model>
1437 void MainWindow::replace_model(QTableView *view, Model **model, Model *new_model)
1438 {
1439         QItemSelectionModel *old_selection_model = view->selectionModel();
1440         view->setModel(new_model);
1441         delete *model;
1442         delete old_selection_model;
1443         *model = new_model;
1444         connect(new_model, &Model::any_content_changed, this, &MainWindow::content_changed);
1445 }
1446
1447 void MainWindow::start_tally()
1448 {
1449         http_reply = http.get(QNetworkRequest(QString::fromStdString(global_flags.tally_url)));
1450         connect(http_reply, &QNetworkReply::finished, this, &MainWindow::tally_received);
1451 }
1452
1453 void MainWindow::tally_received()
1454 {
1455         unsigned time_to_next_tally_ms;
1456         if (http_reply->error()) {
1457                 fprintf(stderr, "HTTP get of '%s' failed: %s\n", global_flags.tally_url.c_str(),
1458                         http_reply->errorString().toStdString().c_str());
1459                 ui->live_frame->setStyleSheet("");
1460                 time_to_next_tally_ms = 1000;
1461         } else {
1462                 string contents = http_reply->readAll().toStdString();
1463                 ui->live_frame->setStyleSheet(QString::fromStdString("background: " + contents));
1464                 time_to_next_tally_ms = 100;
1465         }
1466         http_reply->deleteLater();
1467         http_reply = nullptr;
1468
1469         QTimer::singleShot(time_to_next_tally_ms, this, &MainWindow::start_tally);
1470 }