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

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