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

   1 #include "mainwindow.h"
   2
   3 #include "shared/aboutdialog.h"
   4 #include "clip_list.h"
   5 #include "shared/disk_space_estimator.h"
   6 #include "flags.h"
   7 #include "frame_on_disk.h"
   8 #include "player.h"
   9 #include "shared/post_to_main_thread.h"
  10 #include "shared/timebase.h"
  11 #include "ui_mainwindow.h"
  12
  13 #include <QDesktopServices>
  14 #include <QMessageBox>
  15 #include <QMouseEvent>
  16 #include <QShortcut>
  17 #include <QTimer>
  18 #include <QWheelEvent>
  19 #include <future>
  20 #include <sqlite3.h>
  21 #include <string>
  22 #include <vector>
  23
  24 using namespace std;
  25 using namespace std::placeholders;
  26
  27 MainWindow *global_mainwindow = nullptr;
  28 static ClipList *cliplist_clips;
  29 static PlayList *playlist_clips;
  30
  31 extern int64_t current_pts;
  32
  33 MainWindow::MainWindow()
  34         : ui(new Ui::MainWindow),
  35           db(global_flags.working_directory + "/futatabi.db")
  36 {
  37         global_mainwindow = this;
  38         ui->setupUi(this);
  39
  40         // The menus.
  41         connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
  42         connect(ui->manual_action, &QAction::triggered, this, &MainWindow::manual_triggered);
  43         connect(ui->about_action, &QAction::triggered, this, &MainWindow::about_triggered);
  44
  45         global_disk_space_estimator = new DiskSpaceEstimator(bind(&MainWindow::report_disk_space, this, _1, _2));
  46         disk_free_label = new QLabel(this);
  47         disk_free_label->setStyleSheet("QLabel {padding-right: 5px;}");
  48         ui->menuBar->setCornerWidget(disk_free_label);
  49
  50         StateProto state = db.get_state();
  51
  52         cliplist_clips = new ClipList(state.clip_list());
  53         ui->clip_list->setModel(cliplist_clips);
  54         connect(cliplist_clips, &ClipList::any_content_changed, this, &MainWindow::content_changed);
  55
  56         playlist_clips = new PlayList(state.play_list());
  57         ui->playlist->setModel(playlist_clips);
  58         connect(playlist_clips, &PlayList::any_content_changed, this, &MainWindow::content_changed);
  59
  60         // For un-highlighting when we lose focus.
  61         ui->clip_list->installEventFilter(this);
  62
  63         // For scrubbing in the pts columns.
  64         ui->clip_list->viewport()->installEventFilter(this);
  65         ui->playlist->viewport()->installEventFilter(this);
  66
  67         QShortcut *cue_in = new QShortcut(QKeySequence(Qt::Key_A), this);
  68         connect(cue_in, &QShortcut::activated, ui->cue_in_btn, &QPushButton::click);
  69         connect(ui->cue_in_btn, &QPushButton::clicked, this, &MainWindow::cue_in_clicked);
  70
  71         QShortcut *cue_out = new QShortcut(QKeySequence(Qt::Key_S), this);
  72         connect(cue_out, &QShortcut::activated, ui->cue_out_btn, &QPushButton::click);
  73         connect(ui->cue_out_btn, &QPushButton::clicked, this, &MainWindow::cue_out_clicked);
  74
  75         QShortcut *queue = new QShortcut(QKeySequence(Qt::Key_Q), this);
  76         connect(queue, &QShortcut::activated, ui->queue_btn, &QPushButton::click);
  77         connect(ui->queue_btn, &QPushButton::clicked, this, &MainWindow::queue_clicked);
  78
  79         QShortcut *preview = new QShortcut(QKeySequence(Qt::Key_W), this);
  80         connect(preview, &QShortcut::activated, ui->preview_btn, &QPushButton::click);
  81         connect(ui->preview_btn, &QPushButton::clicked, this, &MainWindow::preview_clicked);
  82
  83         QShortcut *play = new QShortcut(QKeySequence(Qt::Key_Space), this);
  84         connect(play, &QShortcut::activated, ui->play_btn, &QPushButton::click);
  85         connect(ui->play_btn, &QPushButton::clicked, this, &MainWindow::play_clicked);
  86
  87         QShortcut *preview_1 = new QShortcut(QKeySequence(Qt::Key_1), this);
  88         connect(preview_1, &QShortcut::activated, ui->preview_1_btn, &QPushButton::click);
  89         connect(ui->input1_display, &JPEGFrameView::clicked, ui->preview_1_btn, &QPushButton::click);
  90         connect(ui->preview_1_btn, &QPushButton::clicked, [this]{ preview_angle_clicked(0); });
  91         ui->input1_display->set_overlay("1");
  92
  93         QShortcut *preview_2 = new QShortcut(QKeySequence(Qt::Key_2), this);
  94         connect(preview_2, &QShortcut::activated, ui->preview_2_btn, &QPushButton::click);
  95         connect(ui->input2_display, &JPEGFrameView::clicked, ui->preview_2_btn, &QPushButton::click);
  96         connect(ui->preview_2_btn, &QPushButton::clicked, [this]{ preview_angle_clicked(1); });
  97         ui->input2_display->set_overlay("2");
  98
  99         QShortcut *preview_3 = new QShortcut(QKeySequence(Qt::Key_3), this);
 100         connect(preview_3, &QShortcut::activated, ui->preview_3_btn, &QPushButton::click);
 101         connect(ui->input3_display, &JPEGFrameView::clicked, ui->preview_3_btn, &QPushButton::click);
 102         connect(ui->preview_3_btn, &QPushButton::clicked, [this]{ preview_angle_clicked(2); });
 103         ui->input3_display->set_overlay("3");
 104
 105         QShortcut *preview_4 = new QShortcut(QKeySequence(Qt::Key_4), this);
 106         connect(preview_4, &QShortcut::activated, ui->preview_4_btn, &QPushButton::click);
 107         connect(ui->input4_display, &JPEGFrameView::clicked, ui->preview_4_btn, &QPushButton::click);
 108         connect(ui->preview_4_btn, &QPushButton::clicked, [this]{ preview_angle_clicked(3); });
 109         ui->input4_display->set_overlay("4");
 110
 111         connect(ui->playlist_duplicate_btn, &QPushButton::clicked, this, &MainWindow::playlist_duplicate);
 112
 113         connect(ui->playlist_remove_btn, &QPushButton::clicked, this, &MainWindow::playlist_remove);
 114         QShortcut *delete_key = new QShortcut(QKeySequence(Qt::Key_Delete), ui->playlist);
 115         connect(delete_key, &QShortcut::activated, [this] {
 116                 if (ui->playlist->hasFocus()) {
 117                         playlist_remove();
 118                 }
 119         });
 120
 121         // TODO: support drag-and-drop.
 122         connect(ui->playlist_move_up_btn, &QPushButton::clicked, [this]{ playlist_move(-1); });
 123         connect(ui->playlist_move_down_btn, &QPushButton::clicked, [this]{ playlist_move(1); });
 124
 125         connect(ui->playlist->selectionModel(), &QItemSelectionModel::selectionChanged,
 126                 this, &MainWindow::playlist_selection_changed);
 127         playlist_selection_changed();  // First time set-up.
 128
 129         preview_player = new Player(ui->preview_display, /*also_output_to_stream=*/false);
 130         live_player = new Player(ui->live_display, /*also_output_to_stream=*/true);
 131         live_player->set_done_callback([this]{
 132                 post_to_main_thread([this]{
 133                         live_player_clip_done();
 134                 });
 135         });
 136         live_player->set_next_clip_callback(bind(&MainWindow::live_player_get_next_clip, this));
 137         live_player->set_progress_callback([this](const map<size_t, double> &progress) {
 138                 post_to_main_thread([this, progress] {
 139                         live_player_clip_progress(progress);
 140                 });
 141         });
 142         set_output_status("paused");
 143
 144         defer_timeout = new QTimer(this);
 145         defer_timeout->setSingleShot(true);
 146         connect(defer_timeout, &QTimer::timeout, this, &MainWindow::defer_timer_expired);
 147
 148         connect(ui->clip_list->selectionModel(), &QItemSelectionModel::currentChanged,
 149                 this, &MainWindow::clip_list_selection_changed);
 150 }
 151
 152 void MainWindow::cue_in_clicked()
 153 {
 154         if (!cliplist_clips->empty() && cliplist_clips->back()->pts_out < 0) {
 155                 cliplist_clips->mutable_back()->pts_in = current_pts;
 156                 return;
 157         }
 158         Clip clip;
 159         clip.pts_in = current_pts;
 160         cliplist_clips->add_clip(clip);
 161         playlist_selection_changed();
 162         ui->clip_list->scrollToBottom();
 163 }
 164
 165 void MainWindow::cue_out_clicked()
 166 {
 167         if (!cliplist_clips->empty()) {
 168                 cliplist_clips->mutable_back()->pts_out = current_pts;
 169                 // TODO: select the row in the clip list?
 170         }
 171 }
 172
 173 void MainWindow::queue_clicked()
 174 {
 175         if (cliplist_clips->empty()) {
 176                 return;
 177         }
 178
 179         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 180         if (!selected->hasSelection()) {
 181                 Clip clip = *cliplist_clips->back();
 182                 clip.stream_idx = 0;
 183                 if (clip.pts_out != -1) {
 184                         playlist_clips->add_clip(clip);
 185                         playlist_selection_changed();
 186                         ui->playlist->scrollToBottom();
 187                 }
 188                 return;
 189         }
 190
 191         QModelIndex index = selected->currentIndex();
 192         Clip clip = *cliplist_clips->clip(index.row());
 193         if (index.column() >= int(ClipList::Column::CAMERA_1) &&
 194             index.column() <= int(ClipList::Column::CAMERA_4)) {
 195                 clip.stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 196         } else {
 197                 clip.stream_idx = ui->preview_display->get_stream_idx();
 198         }
 199
 200         if (clip.pts_out != -1) {
 201                 playlist_clips->add_clip(clip);
 202                 playlist_selection_changed();
 203                 ui->playlist->scrollToBottom();
 204                 if (!ui->playlist->selectionModel()->hasSelection()) {
 205                         // TODO: Figure out why this doesn't always seem to actually select the row.
 206                         QModelIndex bottom = playlist_clips->index(playlist_clips->size() - 1, 0);
 207                         ui->playlist->setCurrentIndex(bottom);
 208                 }
 209         }
 210 }
 211
 212 void MainWindow::preview_clicked()
 213 {
 214         if (ui->playlist->hasFocus()) {
 215                 // Allow the playlist as preview iff it has focus and something is selected.
 216                 QItemSelectionModel *selected = ui->playlist->selectionModel();
 217                 if (selected->hasSelection()) {
 218                         QModelIndex index = selected->currentIndex();
 219                         const Clip &clip = *playlist_clips->clip(index.row());
 220                         preview_player->play_clip(clip, index.row(), clip.stream_idx);
 221                         return;
 222                 }
 223         }
 224
 225         if (cliplist_clips->empty())
 226                 return;
 227
 228         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 229         if (!selected->hasSelection()) {
 230                 preview_player->play_clip(*cliplist_clips->back(), cliplist_clips->size() - 1, 0);
 231                 return;
 232         }
 233
 234         QModelIndex index = selected->currentIndex();
 235         unsigned stream_idx;
 236         if (index.column() >= int(ClipList::Column::CAMERA_1) &&
 237             index.column() <= int(ClipList::Column::CAMERA_4)) {
 238                 stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 239         } else {
 240                 stream_idx = ui->preview_display->get_stream_idx();
 241         }
 242         preview_player->play_clip(*cliplist_clips->clip(index.row()), index.row(), stream_idx);
 243 }
 244
 245 void MainWindow::preview_angle_clicked(unsigned stream_idx)
 246 {
 247         preview_player->override_angle(stream_idx);
 248
 249         // Change the selection if we were previewing a clip from the clip list.
 250         // (The only other thing we could be showing is a pts scrub, and if so,
 251         // that would be selected.)
 252         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 253         if (selected->hasSelection()) {
 254                 QModelIndex cell = selected->selectedIndexes()[0];
 255                 int column = int(ClipList::Column::CAMERA_1) + stream_idx;
 256                 selected->setCurrentIndex(cell.sibling(cell.row(), column), QItemSelectionModel::ClearAndSelect);
 257         }
 258 }
 259
 260 void MainWindow::playlist_duplicate()
 261 {
 262         QItemSelectionModel *selected = ui->playlist->selectionModel();
 263         if (!selected->hasSelection()) {
 264                 // Should have been grayed out, but OK.
 265                 return;
 266         }
 267         QModelIndexList rows = selected->selectedRows();
 268         int first = rows.front().row(), last = rows.back().row();
 269         playlist_clips->duplicate_clips(first, last);
 270         playlist_selection_changed();
 271 }
 272
 273 void MainWindow::playlist_remove()
 274 {
 275         QItemSelectionModel *selected = ui->playlist->selectionModel();
 276         if (!selected->hasSelection()) {
 277                 // Should have been grayed out, but OK.
 278                 return;
 279         }
 280         QModelIndexList rows = selected->selectedRows();
 281         int first = rows.front().row(), last = rows.back().row();
 282         playlist_clips->erase_clips(first, last);
 283
 284         // TODO: select the next one in the list?
 285
 286         playlist_selection_changed();
 287 }
 288
 289 void MainWindow::playlist_move(int delta)
 290 {
 291         QItemSelectionModel *selected = ui->playlist->selectionModel();
 292         if (!selected->hasSelection()) {
 293                 // Should have been grayed out, but OK.
 294                 return;
 295         }
 296
 297         QModelIndexList rows = selected->selectedRows();
 298         int first = rows.front().row(), last = rows.back().row();
 299         if ((delta == -1 && first == 0) ||
 300             (delta == 1 && size_t(last) == playlist_clips->size() - 1)) {
 301                 // Should have been grayed out, but OK.
 302                 return;
 303         }
 304
 305         playlist_clips->move_clips(first, last, delta);
 306         playlist_selection_changed();
 307 }
 308
 309 void MainWindow::defer_timer_expired()
 310 {
 311         state_changed(deferred_state);
 312 }
 313
 314 void MainWindow::content_changed()
 315 {
 316         if (defer_timeout->isActive() &&
 317             (!currently_deferring_model_changes || deferred_change_id != current_change_id)) {
 318                 // There's some deferred event waiting, but this event is unrelated.
 319                 // So it's time to short-circuit that timer and do the work it wanted to do.
 320                 defer_timeout->stop();
 321                 state_changed(deferred_state);
 322         }
 323         StateProto state;
 324         *state.mutable_clip_list() = cliplist_clips->serialize();
 325         *state.mutable_play_list() = playlist_clips->serialize();
 326         if (currently_deferring_model_changes) {
 327                 deferred_change_id = current_change_id;
 328                 deferred_state = std::move(state);
 329                 defer_timeout->start(200);
 330                 return;
 331         }
 332         state_changed(state);
 333 }
 334
 335 void MainWindow::state_changed(const StateProto &state)
 336 {
 337         db.store_state(state);
 338 }
 339
 340 void MainWindow::play_clicked()
 341 {
 342         if (playlist_clips->empty())
 343                 return;
 344
 345         QItemSelectionModel *selected = ui->playlist->selectionModel();
 346         int row;
 347         if (!selected->hasSelection()) {
 348                 row = 0;
 349         } else {
 350                 row = selected->selectedRows(0)[0].row();
 351         }
 352
 353         const Clip &clip = *playlist_clips->clip(row);
 354         live_player->play_clip(clip, row, clip.stream_idx);
 355         playlist_clips->set_progress({{ row, 0.0f }});
 356         playlist_clips->set_currently_playing(row, 0.0f);
 357         playlist_selection_changed();
 358 }
 359
 360 void MainWindow::live_player_clip_done()
 361 {
 362         int row = playlist_clips->get_currently_playing();
 363         if (row == -1 || row == int(playlist_clips->size()) - 1) {
 364                 set_output_status("paused");
 365                 playlist_clips->set_progress({});
 366                 playlist_clips->set_currently_playing(-1, 0.0f);
 367         } else {
 368                 playlist_clips->set_progress({{ row + 1, 0.0f }});
 369                 playlist_clips->set_currently_playing(row + 1, 0.0f);
 370         }
 371 }
 372
 373 pair<Clip, size_t> MainWindow::live_player_get_next_clip()
 374 {
 375         // playlist_clips can only be accessed on the main thread.
 376         // Hopefully, we won't have to wait too long for this to come back.
 377         promise<pair<Clip, size_t>> clip_promise;
 378         future<pair<Clip, size_t>> clip = clip_promise.get_future();
 379         post_to_main_thread([this, &clip_promise] {
 380                 int row = playlist_clips->get_currently_playing();
 381                 if (row != -1 && row < int(playlist_clips->size()) - 1) {
 382                         clip_promise.set_value(make_pair(*playlist_clips->clip(row + 1), row + 1));
 383                 } else {
 384                         clip_promise.set_value(make_pair(Clip(), 0));
 385                 }
 386         });
 387         return clip.get();
 388 }
 389
 390 static string format_duration(double t)
 391 {
 392         int t_ms = lrint(t * 1e3);
 393
 394         int ms = t_ms % 1000;
 395         t_ms /= 1000;
 396         int s = t_ms % 60;
 397         t_ms /= 60;
 398         int m = t_ms;
 399
 400         char buf[256];
 401         snprintf(buf, sizeof(buf), "%d:%02d.%03d", m, s, ms);
 402         return buf;
 403 }
 404
 405 void MainWindow::live_player_clip_progress(const map<size_t, double> &progress)
 406 {
 407         playlist_clips->set_progress(progress);
 408
 409         // Look at the last clip and then start counting from there.
 410         assert(!progress.empty());
 411         auto last_it = progress.end();
 412         --last_it;
 413         double remaining = 0.0;
 414         double last_fade_time_seconds = 0.0;
 415         for (size_t row = last_it->first; row < playlist_clips->size(); ++row) {
 416                 const Clip clip = *playlist_clips->clip(row);
 417                 double clip_length = double(clip.pts_out - clip.pts_in) / TIMEBASE / 0.5;  // FIXME: stop hardcoding speed.
 418                 if (row == last_it->first) {
 419                         // A clip we're playing: Subtract the part we've already played.
 420                         remaining = clip_length * (1.0 - last_it->second);
 421                 } else {
 422                         // A clip we haven't played yet: Subtract the part that's overlapping
 423                         // with a previous clip (due to fade).
 424                         remaining += max(clip_length - last_fade_time_seconds, 0.0);
 425                 }
 426                 last_fade_time_seconds = min(clip_length, clip.fade_time_seconds);
 427         }
 428         set_output_status(format_duration(remaining) + " left");
 429 }
 430
 431 void MainWindow::resizeEvent(QResizeEvent *event)
 432 {
 433         QMainWindow::resizeEvent(event);
 434
 435         // Ask for a relayout, but only after the event loop is done doing relayout
 436         // on everything else.
 437         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 438 }
 439
 440 void MainWindow::relayout()
 441 {
 442         ui->live_display->setMinimumWidth(ui->live_display->height() * 16 / 9);
 443         ui->preview_display->setMinimumWidth(ui->preview_display->height() * 16 / 9);
 444 }
 445
 446 void set_pts_in(int64_t pts, int64_t current_pts, ClipProxy &clip)
 447 {
 448         pts = std::max<int64_t>(pts, 0);
 449         if (clip->pts_out == -1) {
 450                 pts = std::min(pts, current_pts);
 451         } else {
 452                 pts = std::min(pts, clip->pts_out);
 453         }
 454         clip->pts_in = pts;
 455 }
 456
 457 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 458 {
 459         constexpr int dead_zone_pixels = 3;  // To avoid that simple clicks get misinterpreted.
 460         constexpr int scrub_sensitivity = 100;  // pts units per pixel.
 461         constexpr int wheel_sensitivity = 100;  // pts units per degree.
 462         constexpr int camera_degrees_per_pixel = 15;  // One click of most mice.
 463
 464         unsigned stream_idx = ui->preview_display->get_stream_idx();
 465
 466         if (watched == ui->clip_list) {
 467                 if (event->type() == QEvent::FocusOut) {
 468                         highlight_camera_input(-1);
 469                 }
 470                 return false;
 471         }
 472
 473         if (event->type() != QEvent::Wheel) {
 474                 last_mousewheel_camera_row = -1;
 475         }
 476
 477         if (event->type() == QEvent::MouseButtonPress) {
 478                 QMouseEvent *mouse = (QMouseEvent *)event;
 479
 480                 QTableView *destination;
 481                 ScrubType type;
 482
 483                 if (watched == ui->clip_list->viewport()) {
 484                         destination = ui->clip_list;
 485                         type = SCRUBBING_CLIP_LIST;
 486                 } else if (watched == ui->playlist->viewport()) {
 487                         destination = ui->playlist;
 488                         type = SCRUBBING_PLAYLIST;
 489                 } else {
 490                         return false;
 491                 }
 492                 int column = destination->columnAt(mouse->x());
 493                 int row = destination->rowAt(mouse->y());
 494                 if (column == -1 || row == -1)
 495                         return false;
 496
 497                 if (type == SCRUBBING_CLIP_LIST) {
 498                         if (ClipList::Column(column) == ClipList::Column::IN) {
 499                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_in;
 500                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 501                         } else if (ClipList::Column(column) == ClipList::Column::OUT) {
 502                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_out;
 503                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 504                         } else {
 505                                 return false;
 506                         }
 507                 } else {
 508                         if (PlayList::Column(column) == PlayList::Column::IN) {
 509                                 scrub_pts_origin = playlist_clips->clip(row)->pts_in;
 510                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 511                         } else if (PlayList::Column(column) == PlayList::Column::OUT) {
 512                                 scrub_pts_origin = playlist_clips->clip(row)->pts_out;
 513                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 514                         } else {
 515                                 return false;
 516                         }
 517                 }
 518
 519                 scrubbing = true;
 520                 scrub_row = row;
 521                 scrub_column = column;
 522                 scrub_x_origin = mouse->x();
 523                 scrub_type = type;
 524         } else if (event->type() == QEvent::MouseMove) {
 525                 if (scrubbing) {
 526                         QMouseEvent *mouse = (QMouseEvent *)event;
 527                         int offset = mouse->x() - scrub_x_origin;
 528                         int adjusted_offset;
 529                         if (offset >= dead_zone_pixels) {
 530                                 adjusted_offset = offset - dead_zone_pixels;
 531                         } else if (offset < -dead_zone_pixels) {
 532                                 adjusted_offset = offset + dead_zone_pixels;
 533                         } else {
 534                                 adjusted_offset = 0;
 535                         }
 536
 537                         int64_t pts = scrub_pts_origin + adjusted_offset * scrub_sensitivity;
 538                         currently_deferring_model_changes = true;
 539                         if (scrub_type == SCRUBBING_CLIP_LIST) {
 540                                 ClipProxy clip = cliplist_clips->mutable_clip(scrub_row);
 541                                 if (scrub_column == int(ClipList::Column::IN)) {
 542                                         current_change_id = "cliplist:in:" + to_string(scrub_row);
 543                                         set_pts_in(pts, current_pts, clip);
 544                                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 545                                 } else {
 546                                         current_change_id = "cliplist:out" + to_string(scrub_row);
 547                                         pts = std::max(pts, clip->pts_in);
 548                                         pts = std::min(pts, current_pts);
 549                                         clip->pts_out = pts;
 550                                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 551                                 }
 552                         } else {
 553                                 ClipProxy clip = playlist_clips->mutable_clip(scrub_row);
 554                                 if (scrub_column == int(PlayList::Column::IN)) {
 555                                         current_change_id = "playlist:in:" + to_string(scrub_row);
 556                                         set_pts_in(pts, current_pts, clip);
 557                                         preview_single_frame(pts, clip->stream_idx, FIRST_AT_OR_AFTER);
 558                                 } else {
 559                                         current_change_id = "playlist:out:" + to_string(scrub_row);
 560                                         pts = std::max(pts, clip->pts_in);
 561                                         pts = std::min(pts, current_pts);
 562                                         clip->pts_out = pts;
 563                                         preview_single_frame(pts, clip->stream_idx, LAST_BEFORE);
 564                                 }
 565                         }
 566                         currently_deferring_model_changes = false;
 567
 568                         return true;  // Don't use this mouse movement for selecting things.
 569                 }
 570         } else if (event->type() == QEvent::Wheel) {
 571                 QWheelEvent *wheel = (QWheelEvent *)event;
 572
 573                 QTableView *destination;
 574                 int in_column, out_column, camera_column;
 575                 if (watched == ui->clip_list->viewport()) {
 576                         destination = ui->clip_list;
 577                         in_column = int(ClipList::Column::IN);
 578                         out_column = int(ClipList::Column::OUT);
 579                         camera_column = -1;
 580                         last_mousewheel_camera_row = -1;
 581                 } else if (watched == ui->playlist->viewport()) {
 582                         destination = ui->playlist;
 583                         in_column = int(PlayList::Column::IN);
 584                         out_column = int(PlayList::Column::OUT);
 585                         camera_column = int(PlayList::Column::CAMERA);
 586                 } else {
 587                         last_mousewheel_camera_row = -1;
 588                         return false;
 589                 }
 590                 int column = destination->columnAt(wheel->x());
 591                 int row = destination->rowAt(wheel->y());
 592                 if (column == -1 || row == -1) return false;
 593
 594                 // Only adjust pts with the wheel if the given row is selected.
 595                 if (!destination->hasFocus() ||
 596                     row != destination->selectionModel()->currentIndex().row()) {
 597                         return false;
 598                 }
 599
 600                 currently_deferring_model_changes = true;
 601                 {
 602                         current_change_id = (watched == ui->clip_list->viewport()) ? "cliplist:" : "playlist:";
 603                         ClipProxy clip = (watched == ui->clip_list->viewport()) ?
 604                                 cliplist_clips->mutable_clip(row) : playlist_clips->mutable_clip(row);
 605                         if (watched == ui->playlist->viewport()) {
 606                                 stream_idx = clip->stream_idx;
 607                         }
 608
 609                         if (column != camera_column) {
 610                                 last_mousewheel_camera_row = -1;
 611                         }
 612                         if (column == in_column) {
 613                                 current_change_id += "in:" + to_string(row);
 614                                 int64_t pts = clip->pts_in + wheel->angleDelta().y() * wheel_sensitivity;
 615                                 set_pts_in(pts, current_pts, clip);
 616                                 preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 617                         } else if (column == out_column) {
 618                                 current_change_id += "out:" + to_string(row);
 619                                 int64_t pts = clip->pts_out + wheel->angleDelta().y() * wheel_sensitivity;
 620                                 pts = std::max(pts, clip->pts_in);
 621                                 pts = std::min(pts, current_pts);
 622                                 clip->pts_out = pts;
 623                                 preview_single_frame(pts, stream_idx, LAST_BEFORE);
 624                         } else if (column == camera_column) {
 625                                 current_change_id += "camera:" + to_string(row);
 626                                 int angle_degrees = wheel->angleDelta().y();
 627                                 if (last_mousewheel_camera_row == row) {
 628                                         angle_degrees += leftover_angle_degrees;
 629                                 }
 630
 631                                 int stream_idx = clip->stream_idx + angle_degrees / camera_degrees_per_pixel;
 632                                 stream_idx = std::max(stream_idx, 0);
 633                                 stream_idx = std::min(stream_idx, NUM_CAMERAS - 1);
 634                                 clip->stream_idx = stream_idx;
 635
 636                                 last_mousewheel_camera_row = row;
 637                                 leftover_angle_degrees = angle_degrees % camera_degrees_per_pixel;
 638
 639                                 // Don't update the live view, that's rarely what the operator wants.
 640                         }
 641                 }
 642                 currently_deferring_model_changes = false;
 643                 return true;  // Don't scroll.
 644         } else if (event->type() == QEvent::MouseButtonRelease) {
 645                 scrubbing = false;
 646         }
 647         return false;
 648 }
 649
 650 void MainWindow::preview_single_frame(int64_t pts, unsigned stream_idx, MainWindow::Rounding rounding)
 651 {
 652         if (rounding == LAST_BEFORE) {
 653                 lock_guard<mutex> lock(frame_mu);
 654                 if (frames[stream_idx].empty())
 655                         return;
 656                 auto it = lower_bound(frames[stream_idx].begin(), frames[stream_idx].end(), pts,
 657                         [](const FrameOnDisk &frame, int64_t pts) { return frame.pts < pts; });
 658                 if (it != frames[stream_idx].end()) {
 659                         pts = it->pts;
 660                 }
 661         } else {
 662                 assert(rounding == FIRST_AT_OR_AFTER);
 663                 lock_guard<mutex> lock(frame_mu);
 664                 if (frames[stream_idx].empty())
 665                         return;
 666                 auto it = upper_bound(frames[stream_idx].begin(), frames[stream_idx].end(), pts - 1,
 667                         [](int64_t pts, const FrameOnDisk &frame) { return pts < frame.pts; });
 668                 if (it != frames[stream_idx].end()) {
 669                         pts = it->pts;
 670                 }
 671         }
 672
 673         Clip fake_clip;
 674         fake_clip.pts_in = pts;
 675         fake_clip.pts_out = pts + 1;
 676         preview_player->play_clip(fake_clip, 0, stream_idx);
 677 }
 678
 679 void MainWindow::playlist_selection_changed()
 680 {
 681         QItemSelectionModel *selected = ui->playlist->selectionModel();
 682         bool any_selected = selected->hasSelection();
 683         ui->playlist_duplicate_btn->setEnabled(any_selected);
 684         ui->playlist_remove_btn->setEnabled(any_selected);
 685         ui->playlist_move_up_btn->setEnabled(
 686                 any_selected && selected->selectedRows().front().row() > 0);
 687         ui->playlist_move_down_btn->setEnabled(
 688                 any_selected && selected->selectedRows().back().row() < int(playlist_clips->size()) - 1);
 689         ui->play_btn->setEnabled(!playlist_clips->empty());
 690
 691         if (!any_selected) {
 692                 set_output_status("paused");
 693         } else {
 694                 double remaining = 0.0;
 695                 for (int row = selected->selectedRows().front().row(); row < int(playlist_clips->size()); ++row) {
 696                         const Clip clip = *playlist_clips->clip(row);
 697                         remaining += double(clip.pts_out - clip.pts_in) / TIMEBASE / 0.5;  // FIXME: stop hardcoding speed.
 698                 }
 699                 set_output_status(format_duration(remaining) + " ready");
 700         }
 701 }
 702
 703 void MainWindow::clip_list_selection_changed(const QModelIndex &current, const QModelIndex &)
 704 {
 705         int camera_selected = -1;
 706         if (current.column() >= int(ClipList::Column::CAMERA_1) &&
 707             current.column() <= int(ClipList::Column::CAMERA_4)) {
 708                 camera_selected = current.column() - int(ClipList::Column::CAMERA_1);
 709         }
 710         highlight_camera_input(camera_selected);
 711 }
 712
 713 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
 714 {
 715         char time_str[256];
 716         if (estimated_seconds_left < 60.0) {
 717                 strcpy(time_str, "<font color=\"red\">Less than a minute</font>");
 718         } else if (estimated_seconds_left < 1800.0) {  // Less than half an hour: Xm Ys (red).
 719                 int s = lrintf(estimated_seconds_left);
 720                 int m = s / 60;
 721                 s %= 60;
 722                 snprintf(time_str, sizeof(time_str), "<font color=\"red\">%dm %ds</font>", m, s);
 723         } else if (estimated_seconds_left < 3600.0) {  // Less than an hour: Xm.
 724                 int m = lrintf(estimated_seconds_left / 60.0);
 725                 snprintf(time_str, sizeof(time_str), "%dm", m);
 726         } else if (estimated_seconds_left < 36000.0) {  // Less than ten hours: Xh Ym.
 727                 int m = lrintf(estimated_seconds_left / 60.0);
 728                 int h = m / 60;
 729                 m %= 60;
 730                 snprintf(time_str, sizeof(time_str), "%dh %dm", h, m);
 731         } else {  // More than ten hours: Xh.
 732                 int h = lrintf(estimated_seconds_left / 3600.0);
 733                 snprintf(time_str, sizeof(time_str), "%dh", h);
 734         }
 735         char buf[256];
 736         snprintf(buf, sizeof(buf), "Disk free: %'.0f MB (approx. %s)", free_bytes / 1048576.0, time_str);
 737
 738         std::string label = buf;
 739
 740         post_to_main_thread([this, label] {
 741                 disk_free_label->setText(QString::fromStdString(label));
 742                 ui->menuBar->setCornerWidget(disk_free_label);  // Need to set this again for the sizing to get right.
 743         });
 744 }
 745
 746 void MainWindow::exit_triggered()
 747 {
 748         close();
 749 }
 750
 751 void MainWindow::manual_triggered()
 752 {
 753         if (!QDesktopServices::openUrl(QUrl("https://nageru.sesse.net/doc/"))) {
 754                 QMessageBox msgbox;
 755                 msgbox.setText("Could not launch manual in web browser.\nPlease see https://nageru.sesse.net/doc/ manually.");
 756                 msgbox.exec();
 757         }
 758 }
 759
 760 void MainWindow::about_triggered()
 761 {
 762         AboutDialog("Futatabi", "Multicamera slow motion video server").exec();
 763 }
 764
 765 void MainWindow::highlight_camera_input(int stream_idx)
 766 {
 767         if (stream_idx == 0) {
 768                 ui->input1_frame->setStyleSheet("background: rgb(0,255,0)");
 769         } else {
 770                 ui->input1_frame->setStyleSheet("");
 771         }
 772         if (stream_idx == 1) {
 773                 ui->input2_frame->setStyleSheet("background: rgb(0,255,0)");
 774         } else {
 775                 ui->input2_frame->setStyleSheet("");
 776         }
 777         if (stream_idx == 2) {
 778                 ui->input3_frame->setStyleSheet("background: rgb(0,255,0)");
 779         } else {
 780                 ui->input3_frame->setStyleSheet("");
 781         }
 782         if (stream_idx == 3) {
 783                 ui->input4_frame->setStyleSheet("background: rgb(0,255,0)");
 784         } else {
 785                 ui->input4_frame->setStyleSheet("");
 786         }
 787 }
 788
 789 void MainWindow::set_output_status(const string &status)
 790 {
 791         ui->live_label->setText(QString::fromStdString("Current output (" + status + ")"));
 792
 793         lock_guard<mutex> lock(queue_status_mu);
 794         queue_status = status;
 795 }
 796
 797 pair<string, string> MainWindow::get_queue_status() const {
 798         lock_guard<mutex> lock(queue_status_mu);
 799         return {queue_status, "text/plain"};
 800 }