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         if (clip.pts_out == -1) {
 441                 clip.pts_out = clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
 442         }
 443
 444         playlist_clips->add_clip(clip);
 445         playlist_selection_changed();
 446         ui->playlist->scrollToBottom();
 447         if (!ui->playlist->selectionModel()->hasSelection()) {
 448                 // TODO: Figure out why this doesn't always seem to actually select the row.
 449                 QModelIndex bottom = playlist_clips->index(playlist_clips->size() - 1, 0);
 450                 ui->playlist->setCurrentIndex(bottom);
 451         }
 452 }
 453
 454 void MainWindow::preview_clicked()
 455 {
 456         // See also enable_or_disable_preview_button().
 457
 458         if (ui->playlist->hasFocus()) {
 459                 // Allow the playlist as preview iff it has focus and something is selected.
 460                 QItemSelectionModel *selected = ui->playlist->selectionModel();
 461                 if (selected->hasSelection()) {
 462                         QModelIndex index = selected->currentIndex();
 463                         const Clip &clip = *playlist_clips->clip(index.row());
 464                         preview_player->play(clip);
 465                         preview_playing = true;
 466                         enable_or_disable_preview_button();
 467                         return;
 468                 }
 469         }
 470
 471         if (cliplist_clips->empty())
 472                 return;
 473
 474         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 475         if (!selected->hasSelection()) {
 476                 preview_player->play(*cliplist_clips->back());
 477                 preview_playing = true;
 478                 enable_or_disable_preview_button();
 479                 return;
 480         }
 481
 482         QModelIndex index = selected->currentIndex();
 483         Clip clip = *cliplist_clips->clip(index.row());
 484         if (cliplist_clips->is_camera_column(index.column())) {
 485                 clip.stream_idx = index.column() - int(ClipList::Column::CAMERA_1);
 486         } else {
 487                 clip.stream_idx = ui->preview_display->get_stream_idx();
 488         }
 489         if (clip.pts_out == -1) {
 490                 clip.pts_out = clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
 491         }
 492         preview_player->play(clip);
 493         preview_playing = true;
 494         enable_or_disable_preview_button();
 495 }
 496
 497 void MainWindow::preview_angle_clicked(unsigned stream_idx)
 498 {
 499         preview_player->override_angle(stream_idx);
 500
 501         // Change the selection if we were previewing a clip from the clip list.
 502         // (The only other thing we could be showing is a pts scrub, and if so,
 503         // that would be selected.)
 504         QItemSelectionModel *selected = ui->clip_list->selectionModel();
 505         if (selected->hasSelection()) {
 506                 QModelIndex cell = selected->selectedIndexes()[0];
 507                 int column = int(ClipList::Column::CAMERA_1) + stream_idx;
 508                 selected->setCurrentIndex(cell.sibling(cell.row(), column), QItemSelectionModel::ClearAndSelect);
 509         }
 510 }
 511
 512 void MainWindow::playlist_duplicate()
 513 {
 514         QItemSelectionModel *selected = ui->playlist->selectionModel();
 515         if (!selected->hasSelection()) {
 516                 // Should have been grayed out, but OK.
 517                 return;
 518         }
 519         QModelIndexList rows = selected->selectedRows();
 520         int first = rows.front().row(), last = rows.back().row();
 521         playlist_clips->duplicate_clips(first, last);
 522         playlist_selection_changed();
 523 }
 524
 525 void MainWindow::playlist_remove()
 526 {
 527         QItemSelectionModel *selected = ui->playlist->selectionModel();
 528         if (!selected->hasSelection()) {
 529                 // Should have been grayed out, but OK.
 530                 return;
 531         }
 532         QModelIndexList rows = selected->selectedRows();
 533         int first = rows.front().row(), last = rows.back().row();
 534         playlist_clips->erase_clips(first, last);
 535
 536         // TODO: select the next one in the list?
 537
 538         playlist_selection_changed();
 539 }
 540
 541 void MainWindow::playlist_move(int delta)
 542 {
 543         QItemSelectionModel *selected = ui->playlist->selectionModel();
 544         if (!selected->hasSelection()) {
 545                 // Should have been grayed out, but OK.
 546                 return;
 547         }
 548
 549         QModelIndexList rows = selected->selectedRows();
 550         int first = rows.front().row(), last = rows.back().row();
 551         if ((delta == -1 && first == 0) ||
 552             (delta == 1 && size_t(last) == playlist_clips->size() - 1)) {
 553                 // Should have been grayed out, but OK.
 554                 return;
 555         }
 556
 557         playlist_clips->move_clips(first, last, delta);
 558         playlist_selection_changed();
 559 }
 560
 561 void MainWindow::jog_internal(JogDestination jog_destination, int row, int column, int stream_idx, int pts_delta)
 562 {
 563         constexpr int camera_pts_per_pixel = 1500;  // One click of most mice (15 degrees), multiplied by the default wheel_sensitivity.
 564
 565         int in_column, out_column, camera_column;
 566         if (jog_destination == JOG_CLIP_LIST) {
 567                 in_column = int(ClipList::Column::IN);
 568                 out_column = int(ClipList::Column::OUT);
 569                 camera_column = -1;
 570         } else if (jog_destination == JOG_PLAYLIST) {
 571                 in_column = int(PlayList::Column::IN);
 572                 out_column = int(PlayList::Column::OUT);
 573                 camera_column = int(PlayList::Column::CAMERA);
 574         } else {
 575                 assert(false);
 576         }
 577
 578         currently_deferring_model_changes = true;
 579         {
 580                 current_change_id = (jog_destination == JOG_CLIP_LIST) ? "cliplist:" : "playlist:";
 581                 ClipProxy clip = (jog_destination == JOG_CLIP_LIST) ? cliplist_clips->mutable_clip(row) : playlist_clips->mutable_clip(row);
 582                 if (jog_destination == JOG_PLAYLIST) {
 583                         stream_idx = clip->stream_idx;
 584                 }
 585
 586                 if (column == in_column) {
 587                         current_change_id += "in:" + to_string(row);
 588                         int64_t pts = clip->pts_in + pts_delta;
 589                         set_pts_in(pts, current_pts, clip);
 590                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 591                 } else if (column == out_column) {
 592                         current_change_id += "out:" + to_string(row);
 593                         int64_t pts = clip->pts_out + pts_delta;
 594                         pts = std::max(pts, clip->pts_in);
 595                         pts = std::min(pts, current_pts);
 596                         clip->pts_out = pts;
 597                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 598                 } else if (column == camera_column) {
 599                         current_change_id += "camera:" + to_string(row);
 600                         int angle_degrees = pts_delta;
 601                         if (last_mousewheel_camera_row == row) {
 602                                 angle_degrees += leftover_angle_degrees;
 603                         }
 604
 605                         int stream_idx = clip->stream_idx + angle_degrees / camera_pts_per_pixel;
 606                         stream_idx = std::max(stream_idx, 0);
 607                         stream_idx = std::min<int>(stream_idx, num_cameras - 1);
 608                         clip->stream_idx = stream_idx;
 609
 610                         last_mousewheel_camera_row = row;
 611                         leftover_angle_degrees = angle_degrees % camera_pts_per_pixel;
 612
 613                         // Don't update the live view, that's rarely what the operator wants.
 614                 }
 615         }
 616         currently_deferring_model_changes = false;
 617 }
 618
 619 void MainWindow::defer_timer_expired()
 620 {
 621         state_changed(deferred_state);
 622 }
 623
 624 void MainWindow::content_changed()
 625 {
 626         // If we are playing, update the part of the playlist that's not playing yet.
 627         vector<ClipWithID> clips;
 628         for (unsigned row = 0; row < playlist_clips->size(); ++row) {
 629                 clips.emplace_back(*playlist_clips->clip_with_id(row));
 630         }
 631         live_player->splice_play(clips);
 632
 633         // Serialize the state.
 634         if (defer_timeout->isActive() &&
 635             (!currently_deferring_model_changes || deferred_change_id != current_change_id)) {
 636                 // There's some deferred event waiting, but this event is unrelated.
 637                 // So it's time to short-circuit that timer and do the work it wanted to do.
 638                 defer_timeout->stop();
 639                 state_changed(deferred_state);
 640         }
 641         StateProto state;
 642         *state.mutable_clip_list() = cliplist_clips->serialize();
 643         *state.mutable_play_list() = playlist_clips->serialize();
 644         if (currently_deferring_model_changes) {
 645                 deferred_change_id = current_change_id;
 646                 deferred_state = std::move(state);
 647                 defer_timeout->start(200);
 648                 return;
 649         }
 650         state_changed(state);
 651 }
 652
 653 void MainWindow::state_changed(const StateProto &state)
 654 {
 655         db.store_state(state);
 656
 657         redo_stack.clear();
 658         ui->redo_action->setEnabled(false);
 659
 660         undo_stack.push_back(state);
 661         ui->undo_action->setEnabled(undo_stack.size() > 1);
 662
 663         // Make sure it doesn't grow without bounds.
 664         while (undo_stack.size() >= 100) {
 665                 undo_stack.pop_front();
 666         }
 667 }
 668
 669 void MainWindow::save_settings()
 670 {
 671         SettingsProto settings;
 672         settings.set_interpolation_quality(global_flags.interpolation_quality + 1);
 673         settings.set_cue_in_point_padding_seconds(global_flags.cue_in_point_padding_seconds);
 674         settings.set_cue_out_point_padding_seconds(global_flags.cue_out_point_padding_seconds);
 675         db.store_settings(settings);
 676 }
 677
 678 void MainWindow::lock_blink_timer_expired()
 679 {
 680         midi_mapper.set_locked(MIDIMapper::LightState(ui->speed_lock_btn->isChecked()));  // Presumably On, or the timer should have been canceled.
 681 }
 682
 683 void MainWindow::play_clicked()
 684 {
 685         QItemSelectionModel *selected = ui->playlist->selectionModel();
 686         if (!selected->hasSelection()) {
 687                 return;
 688         }
 689         unsigned start_row = selected->selectedRows(0)[0].row();
 690
 691         vector<ClipWithID> clips;
 692         for (unsigned row = start_row; row < playlist_clips->size(); ++row) {
 693                 ClipWithID clip = *playlist_clips->clip_with_id(row);
 694                 if (clip.clip.pts_out == -1) {
 695                         clip.clip.pts_out = clip.clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
 696                 }
 697                 clips.emplace_back(clip);
 698         }
 699         live_player->play(clips);
 700         playlist_clips->set_progress({ { start_row, 0.0f } });
 701         ui->playlist->selectionModel()->clear();
 702         ui->stop_btn->setEnabled(true);
 703         playlist_selection_changed();
 704 }
 705
 706 void MainWindow::next_clicked()
 707 {
 708         live_player->skip_to_next();
 709 }
 710
 711 void MainWindow::stop_clicked()
 712 {
 713         Clip fake_clip;
 714         fake_clip.pts_in = 0;
 715         fake_clip.pts_out = 0;
 716         playlist_clips->set_progress({});
 717         live_player->play(fake_clip);
 718         ui->stop_btn->setEnabled(false);
 719         playlist_selection_changed();
 720 }
 721
 722 void MainWindow::speed_slider_changed(int percent)
 723 {
 724         float speed = percent / 100.0f;
 725         ui->speed_lock_btn->setText(QString::fromStdString(" " + to_string(percent) + "%"));
 726         live_player->set_master_speed(speed);
 727         midi_mapper.set_speed_light(speed);
 728 }
 729
 730 void MainWindow::speed_lock_clicked()
 731 {
 732         // TODO: Make for a less abrupt transition if we're not already at 100%.
 733         ui->speed_slider->setValue(100);  // Also actually sets the master speed and updates the label.
 734         ui->speed_slider->setEnabled(!ui->speed_lock_btn->isChecked());
 735         midi_mapper.set_locked(MIDIMapper::LightState(ui->speed_lock_btn->isChecked()));
 736         lock_blink_timeout->stop();
 737 }
 738
 739 void MainWindow::preview_player_done()
 740 {
 741         preview_playing = false;
 742         enable_or_disable_preview_button();
 743 }
 744
 745 void MainWindow::live_player_done()
 746 {
 747         playlist_clips->set_progress({});
 748         ui->stop_btn->setEnabled(false);
 749         playlist_selection_changed();
 750 }
 751
 752 void MainWindow::live_player_clip_progress(const map<uint64_t, double> &progress, TimeRemaining time_remaining)
 753 {
 754         playlist_clips->set_progress(progress);
 755         set_output_status(format_duration(time_remaining) + " left");
 756 }
 757
 758 void MainWindow::resizeEvent(QResizeEvent *event)
 759 {
 760         QMainWindow::resizeEvent(event);
 761
 762         // Ask for a relayout, but only after the event loop is done doing relayout
 763         // on everything else.
 764         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 765 }
 766
 767 void MainWindow::relayout()
 768 {
 769         ui->live_display->setMinimumWidth(ui->live_display->height() * 16 / 9);
 770         ui->preview_display->setMinimumWidth(ui->preview_display->height() * 16 / 9);
 771 }
 772
 773 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 774 {
 775         constexpr int dead_zone_pixels = 3;  // To avoid that simple clicks get misinterpreted.
 776         int scrub_sensitivity = 100;  // pts units per pixel.
 777         int wheel_sensitivity = 100;  // pts units per degree.
 778
 779         if (event->type() == QEvent::FocusIn || event->type() == QEvent::FocusOut) {
 780                 enable_or_disable_preview_button();
 781                 playlist_selection_changed();
 782                 hidden_jog_column = -1;
 783         }
 784
 785         unsigned stream_idx = ui->preview_display->get_stream_idx();
 786
 787         if (watched == ui->clip_list) {
 788                 if (event->type() == QEvent::FocusOut) {
 789                         highlight_camera_input(-1);
 790                 }
 791                 return false;
 792         }
 793
 794         if (event->type() != QEvent::Wheel) {
 795                 last_mousewheel_camera_row = -1;
 796         }
 797
 798         if (event->type() == QEvent::MouseButtonPress) {
 799                 QMouseEvent *mouse = (QMouseEvent *)event;
 800
 801                 QTableView *destination;
 802                 ScrubType type;
 803
 804                 if (watched == ui->clip_list->viewport()) {
 805                         destination = ui->clip_list;
 806                         type = SCRUBBING_CLIP_LIST;
 807                 } else if (watched == ui->playlist->viewport()) {
 808                         destination = ui->playlist;
 809                         type = SCRUBBING_PLAYLIST;
 810                 } else {
 811                         return false;
 812                 }
 813                 int column = destination->columnAt(mouse->x());
 814                 int row = destination->rowAt(mouse->y());
 815                 if (column == -1 || row == -1)
 816                         return false;
 817
 818                 if (type == SCRUBBING_CLIP_LIST) {
 819                         if (ClipList::Column(column) == ClipList::Column::IN) {
 820                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_in;
 821                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 822                         } else if (ClipList::Column(column) == ClipList::Column::OUT) {
 823                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_out;
 824                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 825                         } else {
 826                                 return false;
 827                         }
 828                 } else {
 829                         if (PlayList::Column(column) == PlayList::Column::IN) {
 830                                 scrub_pts_origin = playlist_clips->clip(row)->pts_in;
 831                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 832                         } else if (PlayList::Column(column) == PlayList::Column::OUT) {
 833                                 scrub_pts_origin = playlist_clips->clip(row)->pts_out;
 834                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 835                         } else {
 836                                 return false;
 837                         }
 838                 }
 839
 840                 scrubbing = true;
 841                 scrub_row = row;
 842                 scrub_column = column;
 843                 scrub_x_origin = mouse->x();
 844                 scrub_type = type;
 845         } else if (event->type() == QEvent::MouseMove) {
 846                 QMouseEvent *mouse = (QMouseEvent *)event;
 847                 if (mouse->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 848                         scrub_sensitivity *= 10;
 849                         wheel_sensitivity *= 10;
 850                         if (mouse->modifiers() & Qt::KeyboardModifier::ControlModifier) {
 851                                 // Ctrl+Shift is a super-modifier, meant only for things like “go back two hours”.
 852                                 scrub_sensitivity *= 100;
 853                                 wheel_sensitivity *= 100;
 854                         }
 855                 }
 856                 if (mouse->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 857                         scrub_sensitivity /= 10;
 858                         wheel_sensitivity /= 10;
 859                 }
 860                 if (scrubbing) {
 861                         int offset = mouse->x() - scrub_x_origin;
 862                         int adjusted_offset;
 863                         if (offset >= dead_zone_pixels) {
 864                                 adjusted_offset = offset - dead_zone_pixels;
 865                         } else if (offset < -dead_zone_pixels) {
 866                                 adjusted_offset = offset + dead_zone_pixels;
 867                         } else {
 868                                 adjusted_offset = 0;
 869                         }
 870
 871                         int64_t pts = scrub_pts_origin + adjusted_offset * scrub_sensitivity;
 872                         currently_deferring_model_changes = true;
 873                         if (scrub_type == SCRUBBING_CLIP_LIST) {
 874                                 ClipProxy clip = cliplist_clips->mutable_clip(scrub_row);
 875                                 if (scrub_column == int(ClipList::Column::IN)) {
 876                                         current_change_id = "cliplist:in:" + to_string(scrub_row);
 877                                         set_pts_in(pts, current_pts, clip);
 878                                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 879                                 } else {
 880                                         current_change_id = "cliplist:out" + to_string(scrub_row);
 881                                         pts = std::max(pts, clip->pts_in);
 882                                         pts = std::min(pts, current_pts);
 883                                         clip->pts_out = pts;
 884                                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 885                                 }
 886                         } else {
 887                                 ClipProxy clip = playlist_clips->mutable_clip(scrub_row);
 888                                 if (scrub_column == int(PlayList::Column::IN)) {
 889                                         current_change_id = "playlist:in:" + to_string(scrub_row);
 890                                         set_pts_in(pts, current_pts, clip);
 891                                         preview_single_frame(pts, clip->stream_idx, FIRST_AT_OR_AFTER);
 892                                 } else {
 893                                         current_change_id = "playlist:out:" + to_string(scrub_row);
 894                                         pts = std::max(pts, clip->pts_in);
 895                                         pts = std::min(pts, current_pts);
 896                                         clip->pts_out = pts;
 897                                         preview_single_frame(pts, clip->stream_idx, LAST_BEFORE);
 898                                 }
 899                         }
 900                         currently_deferring_model_changes = false;
 901
 902                         return true;  // Don't use this mouse movement for selecting things.
 903                 }
 904         } else if (event->type() == QEvent::Wheel) {
 905                 QWheelEvent *wheel = (QWheelEvent *)event;
 906                 int angle_delta = wheel->angleDelta().y();
 907                 if (wheel->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 908                         scrub_sensitivity *= 10;
 909                         wheel_sensitivity *= 10;
 910                         if (wheel->modifiers() & Qt::KeyboardModifier::ControlModifier) {
 911                                 // Ctrl+Shift is a super-modifier, meant only for things like “go back two hours”.
 912                                 scrub_sensitivity *= 100;
 913                                 wheel_sensitivity *= 100;
 914                         }
 915                 }
 916                 if (wheel->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 917                         scrub_sensitivity /= 10;
 918                         wheel_sensitivity /= 10;
 919                         angle_delta = wheel->angleDelta().x();  // Qt ickiness.
 920                 }
 921
 922                 QTableView *destination;
 923                 JogDestination jog_destination;
 924                 if (watched == ui->clip_list->viewport()) {
 925                         destination = ui->clip_list;
 926                         jog_destination = JOG_CLIP_LIST;
 927                         last_mousewheel_camera_row = -1;
 928                 } else if (watched == ui->playlist->viewport()) {
 929                         destination = ui->playlist;
 930                         jog_destination = JOG_PLAYLIST;
 931                         if (destination->columnAt(wheel->x()) != int(PlayList::Column::CAMERA)) {
 932                                 last_mousewheel_camera_row = -1;
 933                         }
 934                 } else {
 935                         last_mousewheel_camera_row = -1;
 936                         return false;
 937                 }
 938
 939                 int column = destination->columnAt(wheel->x());
 940                 int row = destination->rowAt(wheel->y());
 941                 if (column == -1 || row == -1)
 942                         return false;
 943
 944                 // Only adjust pts with the wheel if the given row is selected.
 945                 if (!destination->hasFocus() ||
 946                     row != destination->selectionModel()->currentIndex().row()) {
 947                         return false;
 948                 }
 949
 950                 jog_internal(jog_destination, row, column, stream_idx, angle_delta * wheel_sensitivity);
 951                 return true;  // Don't scroll.
 952         } else if (event->type() == QEvent::MouseButtonRelease) {
 953                 scrubbing = false;
 954         }
 955         return false;
 956 }
 957
 958 void MainWindow::preview_single_frame(int64_t pts, unsigned stream_idx, MainWindow::Rounding rounding)
 959 {
 960         if (rounding == LAST_BEFORE) {
 961                 lock_guard<mutex> lock(frame_mu);
 962                 if (frames[stream_idx].empty())
 963                         return;
 964                 auto it = find_last_frame_before(frames[stream_idx], pts);
 965                 if (it != frames[stream_idx].end()) {
 966                         pts = it->pts;
 967                 }
 968         } else {
 969                 assert(rounding == FIRST_AT_OR_AFTER);
 970                 lock_guard<mutex> lock(frame_mu);
 971                 if (frames[stream_idx].empty())
 972                         return;
 973                 auto it = find_first_frame_at_or_after(frames[stream_idx], pts);
 974                 if (it != frames[stream_idx].end()) {
 975                         pts = it->pts;
 976                 }
 977         }
 978
 979         Clip fake_clip;
 980         fake_clip.pts_in = pts;
 981         fake_clip.pts_out = pts + 1;
 982         fake_clip.stream_idx = stream_idx;
 983         preview_player->play(fake_clip);
 984 }
 985
 986 void MainWindow::playlist_selection_changed()
 987 {
 988         enable_or_disable_preview_button();
 989
 990         QItemSelectionModel *selected = ui->playlist->selectionModel();
 991         bool any_selected = selected->hasSelection();
 992         ui->playlist_duplicate_btn->setEnabled(any_selected);
 993         ui->playlist_remove_btn->setEnabled(any_selected);
 994         ui->playlist_move_up_btn->setEnabled(
 995                 any_selected && selected->selectedRows().front().row() > 0);
 996         ui->playlist_move_down_btn->setEnabled(
 997                 any_selected && selected->selectedRows().back().row() < int(playlist_clips->size()) - 1);
 998
 999         ui->play_btn->setEnabled(any_selected);
1000         ui->next_btn->setEnabled(ui->stop_btn->isEnabled());  // TODO: Perhaps not if we're on the last clip?
1001         midi_mapper.set_next_ready(ui->next_btn->isEnabled() ? MIDIMapper::On : MIDIMapper::Off);
1002
1003         // NOTE: The hidden button is still reachable by keyboard or MIDI.
1004         if (any_selected) {
1005                 ui->play_btn->setVisible(true);
1006         } else if (ui->stop_btn->isEnabled()) {  // Playing.
1007                 ui->play_btn->setVisible(false);
1008         } else {
1009                 ui->play_btn->setVisible(true);
1010         }
1011         ui->next_btn->setVisible(!ui->play_btn->isVisible());
1012
1013         if (ui->stop_btn->isEnabled()) {  // Playing.
1014                 midi_mapper.set_play_enabled(MIDIMapper::On);
1015         } else if (any_selected) {
1016                 midi_mapper.set_play_enabled(MIDIMapper::Blinking);
1017         } else {
1018                 midi_mapper.set_play_enabled(MIDIMapper::Off);
1019         }
1020
1021         if (!any_selected) {
1022                 set_output_status("paused");
1023         } else {
1024                 vector<ClipWithID> clips;
1025                 for (size_t row = selected->selectedRows().front().row(); row < playlist_clips->size(); ++row) {
1026                         clips.emplace_back(*playlist_clips->clip_with_id(row));
1027                 }
1028                 TimeRemaining remaining = compute_total_time(clips);
1029                 set_output_status(format_duration(remaining) + " ready");
1030         }
1031 }
1032
1033 void MainWindow::clip_list_selection_changed(const QModelIndex &current, const QModelIndex &previous)
1034 {
1035         int camera_selected = -1;
1036         if (cliplist_clips->is_camera_column(current.column())) {
1037                 camera_selected = current.column() - int(ClipList::Column::CAMERA_1);
1038
1039                 // See the comment on hidden_jog_column.
1040                 if (current.row() != previous.row()) {
1041                         hidden_jog_column = -1;
1042                 } else if (hidden_jog_column == -1) {
1043                         hidden_jog_column = previous.column();
1044                 }
1045         } else {
1046                 hidden_jog_column = -1;
1047         }
1048         highlight_camera_input(camera_selected);
1049         enable_or_disable_queue_button();
1050 }
1051
1052 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
1053 {
1054         char time_str[256];
1055         if (estimated_seconds_left < 60.0) {
1056                 strcpy(time_str, "<font color=\"red\">Less than a minute</font>");
1057         } else if (estimated_seconds_left < 1800.0) {  // Less than half an hour: Xm Ys (red).
1058                 int s = lrintf(estimated_seconds_left);
1059                 int m = s / 60;
1060                 s %= 60;
1061                 snprintf(time_str, sizeof(time_str), "<font color=\"red\">%dm %ds</font>", m, s);
1062         } else if (estimated_seconds_left < 3600.0) {  // Less than an hour: Xm.
1063                 int m = lrintf(estimated_seconds_left / 60.0);
1064                 snprintf(time_str, sizeof(time_str), "%dm", m);
1065         } else if (estimated_seconds_left < 36000.0) {  // Less than ten hours: Xh Ym.
1066                 int m = lrintf(estimated_seconds_left / 60.0);
1067                 int h = m / 60;
1068                 m %= 60;
1069                 snprintf(time_str, sizeof(time_str), "%dh %dm", h, m);
1070         } else {  // More than ten hours: Xh.
1071                 int h = lrintf(estimated_seconds_left / 3600.0);
1072                 snprintf(time_str, sizeof(time_str), "%dh", h);
1073         }
1074         char buf[256];
1075         snprintf(buf, sizeof(buf), "Disk free: %'.0f MB (approx. %s)", free_bytes / 1048576.0, time_str);
1076
1077         std::string label = buf;
1078
1079         post_to_main_thread([this, label] {
1080                 disk_free_label->setText(QString::fromStdString(label));
1081                 ui->menuBar->setCornerWidget(disk_free_label);  // Need to set this again for the sizing to get right.
1082         });
1083 }
1084
1085 void MainWindow::midi_mapping_triggered()
1086 {
1087         MIDIMappingDialog(&midi_mapper).exec();
1088 }
1089
1090 void MainWindow::exit_triggered()
1091 {
1092         close();
1093 }
1094
1095 void MainWindow::export_cliplist_clip_multitrack_triggered()
1096 {
1097         QItemSelectionModel *selected = ui->clip_list->selectionModel();
1098         if (!selected->hasSelection()) {
1099                 QMessageBox msgbox;
1100                 msgbox.setText("No clip selected in the clip list. Select one and try exporting again.");
1101                 msgbox.exec();
1102                 return;
1103         }
1104
1105         QModelIndex index = selected->currentIndex();
1106         Clip clip = *cliplist_clips->clip(index.row());
1107         QString filename = QFileDialog::getSaveFileName(this,
1108                 "Export multitrack clip", QString(), tr("Matroska video files (*.mkv)"));
1109         if (filename.isNull()) {
1110                 // Cancel.
1111                 return;
1112         }
1113         if (!filename.endsWith(".mkv")) {
1114                 filename += ".mkv";
1115         }
1116         export_multitrack_clip(filename.toStdString(), clip);
1117 }
1118
1119 void MainWindow::export_playlist_clip_interpolated_triggered()
1120 {
1121         QItemSelectionModel *selected = ui->playlist->selectionModel();
1122         if (!selected->hasSelection()) {
1123                 QMessageBox msgbox;
1124                 msgbox.setText("No clip selected in the playlist. Select one and try exporting again.");
1125                 msgbox.exec();
1126                 return;
1127         }
1128
1129         QString filename = QFileDialog::getSaveFileName(this,
1130                 "Export interpolated clip", QString(), tr("Matroska video files (*.mkv)"));
1131         if (filename.isNull()) {
1132                 // Cancel.
1133                 return;
1134         }
1135         if (!filename.endsWith(".mkv")) {
1136                 filename += ".mkv";
1137         }
1138
1139         vector<Clip> clips;
1140         QModelIndexList rows = selected->selectedRows();
1141         for (QModelIndex index : rows) {
1142                 clips.push_back(*playlist_clips->clip(index.row()));
1143         }
1144         export_interpolated_clip(filename.toStdString(), clips);
1145 }
1146
1147 void MainWindow::manual_triggered()
1148 {
1149         if (!QDesktopServices::openUrl(QUrl("https://nageru.sesse.net/doc/"))) {
1150                 QMessageBox msgbox;
1151                 msgbox.setText("Could not launch manual in web browser.\nPlease see https://nageru.sesse.net/doc/ manually.");
1152                 msgbox.exec();
1153         }
1154 }
1155
1156 void MainWindow::about_triggered()
1157 {
1158         AboutDialog("Futatabi", "Multicamera slow motion video server").exec();
1159 }
1160
1161 void MainWindow::undo_triggered()
1162 {
1163         // Finish any deferred action.
1164         if (defer_timeout->isActive()) {
1165                 defer_timeout->stop();
1166                 state_changed(deferred_state);
1167         }
1168
1169         StateProto redo_state;
1170         *redo_state.mutable_clip_list() = cliplist_clips->serialize();
1171         *redo_state.mutable_play_list() = playlist_clips->serialize();
1172         redo_stack.push_back(std::move(redo_state));
1173         ui->redo_action->setEnabled(true);
1174
1175         assert(undo_stack.size() > 1);
1176
1177         // Pop off the current state, which is always at the top of the stack.
1178         undo_stack.pop_back();
1179
1180         StateProto state = undo_stack.back();
1181         ui->undo_action->setEnabled(undo_stack.size() > 1);
1182
1183         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1184         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1185
1186         db.store_state(state);
1187 }
1188
1189 void MainWindow::redo_triggered()
1190 {
1191         assert(!redo_stack.empty());
1192
1193         ui->undo_action->setEnabled(true);
1194         ui->redo_action->setEnabled(true);
1195
1196         undo_stack.push_back(std::move(redo_stack.back()));
1197         redo_stack.pop_back();
1198         ui->undo_action->setEnabled(true);
1199         ui->redo_action->setEnabled(!redo_stack.empty());
1200
1201         const StateProto &state = undo_stack.back();
1202         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1203         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1204
1205         db.store_state(state);
1206 }
1207
1208 void MainWindow::quality_toggled(int quality, bool checked)
1209 {
1210         if (!checked) {
1211                 return;
1212         }
1213         global_flags.interpolation_quality = quality;
1214         if (quality != 0 &&  // Turning interpolation off is always possible.
1215             quality != flow_initialized_interpolation_quality) {
1216                 QMessageBox msgbox;
1217                 msgbox.setText(QString::fromStdString(
1218                         "The interpolation quality for the main output cannot be changed at runtime, "
1219                         "except being turned completely off; it will take effect for exported files "
1220                         "only until next restart. The live output quality thus remains at " +
1221                         to_string(flow_initialized_interpolation_quality) + "."));
1222                 msgbox.exec();
1223         }
1224
1225         save_settings();
1226 }
1227
1228 void MainWindow::in_padding_toggled(double seconds, bool checked)
1229 {
1230         if (!checked) {
1231                 return;
1232         }
1233         global_flags.cue_in_point_padding_seconds = seconds;
1234         save_settings();
1235 }
1236
1237 void MainWindow::out_padding_toggled(double seconds, bool checked)
1238 {
1239         if (!checked) {
1240                 return;
1241         }
1242         global_flags.cue_out_point_padding_seconds = seconds;
1243         save_settings();
1244 }
1245
1246 void MainWindow::hide_camera_toggled(unsigned camera_idx, bool checked)
1247 {
1248         displays[camera_idx].hidden = checked;
1249         relayout_displays();
1250 }
1251
1252 void MainWindow::highlight_camera_input(int stream_idx)
1253 {
1254         for (unsigned i = 0; i < num_cameras; ++i) {
1255                 if (unsigned(stream_idx) == i) {
1256                         displays[i].frame->setStyleSheet("background: rgb(0,255,0)");
1257                 } else {
1258                         displays[i].frame->setStyleSheet("");
1259                 }
1260         }
1261         midi_mapper.highlight_camera_input(stream_idx);
1262 }
1263
1264 void MainWindow::enable_or_disable_preview_button()
1265 {
1266         // Follows the logic in preview_clicked().
1267
1268         if (ui->playlist->hasFocus()) {
1269                 // Allow the playlist as preview iff it has focus and something is selected.
1270                 // TODO: Is this part really relevant?
1271                 QItemSelectionModel *selected = ui->playlist->selectionModel();
1272                 if (selected->hasSelection()) {
1273                         ui->preview_btn->setEnabled(true);
1274                         midi_mapper.set_preview_enabled(preview_playing ? MIDIMapper::On : MIDIMapper::Blinking);
1275                         return;
1276                 }
1277         }
1278
1279         // TODO: Perhaps only enable this if something is actually selected.
1280         ui->preview_btn->setEnabled(!cliplist_clips->empty());
1281         if (preview_playing) {
1282                 midi_mapper.set_preview_enabled(MIDIMapper::On);
1283         } else {
1284                 midi_mapper.set_preview_enabled(cliplist_clips->empty() ? MIDIMapper::Off : MIDIMapper::Blinking);
1285         }
1286 }
1287
1288 void MainWindow::enable_or_disable_queue_button()
1289 {
1290         // Follows the logic in queue_clicked().
1291         // TODO: Perhaps only enable this if something is actually selected.
1292
1293         bool enabled;
1294
1295         if (cliplist_clips->empty()) {
1296                 enabled = false;
1297         } else {
1298                 enabled = true;
1299         }
1300
1301         ui->queue_btn->setEnabled(enabled);
1302         midi_mapper.set_queue_enabled(enabled);
1303 }
1304
1305 void MainWindow::set_output_status(const string &status)
1306 {
1307         ui->live_label->setText(QString::fromStdString("Current output (" + status + ")"));
1308         if (live_player != nullptr) {
1309                 live_player->set_pause_status(status);
1310         }
1311
1312         lock_guard<mutex> lock(queue_status_mu);
1313         queue_status = status;
1314 }
1315
1316 pair<string, string> MainWindow::get_queue_status() const
1317 {
1318         lock_guard<mutex> lock(queue_status_mu);
1319         return { queue_status, "text/plain" };
1320 }
1321
1322 void MainWindow::display_frame(unsigned stream_idx, const FrameOnDisk &frame)
1323 {
1324         if (stream_idx >= MAX_STREAMS) {
1325                 fprintf(stderr, "WARNING: Ignoring too-high stream index %u.\n", stream_idx);
1326                 return;
1327         }
1328         if (stream_idx >= num_cameras) {
1329                 post_to_main_thread_and_wait([this, stream_idx] {
1330                         num_cameras = stream_idx + 1;
1331                         change_num_cameras();
1332                 });
1333         }
1334         displays[stream_idx].display->setFrame(stream_idx, frame);
1335 }
1336
1337 void MainWindow::preview()
1338 {
1339         post_to_main_thread([this] {
1340                 preview_clicked();
1341         });
1342 }
1343
1344 void MainWindow::queue()
1345 {
1346         post_to_main_thread([this] {
1347                 queue_clicked();
1348         });
1349 }
1350
1351 void MainWindow::play()
1352 {
1353         post_to_main_thread([this] {
1354                 play_clicked();
1355         });
1356 }
1357
1358 void MainWindow::next()
1359 {
1360         post_to_main_thread([this] {
1361                 next_clicked();
1362         });
1363 }
1364
1365 void MainWindow::toggle_lock()
1366 {
1367         post_to_main_thread([this] {
1368                 ui->speed_lock_btn->setChecked(!ui->speed_lock_btn->isChecked());
1369                 speed_lock_clicked();
1370         });
1371 }
1372
1373 void MainWindow::jog(int delta)
1374 {
1375         post_to_main_thread([this, delta] {
1376                 int64_t pts_delta = delta * (TIMEBASE / 60);  // One click = frame at 60 fps.
1377                 if (ui->playlist->hasFocus()) {
1378                         QModelIndex selected = ui->playlist->selectionModel()->currentIndex();
1379                         if (selected.column() != -1 && selected.row() != -1) {
1380                                 jog_internal(JOG_PLAYLIST, selected.row(), selected.column(), /*stream_idx=*/-1, pts_delta);
1381                         }
1382                 } else if (ui->clip_list->hasFocus()) {
1383                         QModelIndex selected = ui->clip_list->selectionModel()->currentIndex();
1384                         if (cliplist_clips->is_camera_column(selected.column()) &&
1385                             hidden_jog_column != -1) {
1386                                 // See the definition on hidden_jog_column.
1387                                 selected = selected.sibling(selected.row(), hidden_jog_column);
1388                                 ui->clip_list->selectionModel()->setCurrentIndex(selected, QItemSelectionModel::ClearAndSelect);
1389                                 hidden_jog_column = -1;
1390                         }
1391                         if (selected.column() != -1 && selected.row() != -1) {
1392                                 jog_internal(JOG_CLIP_LIST, selected.row(), selected.column(), ui->preview_display->get_stream_idx(), pts_delta);
1393                         }
1394                 }
1395         });
1396 }
1397
1398 void MainWindow::switch_camera(unsigned camera_idx)
1399 {
1400         post_to_main_thread([this, camera_idx] {
1401                 if (camera_idx < num_cameras) {  // TODO: Also make this change a highlighted clip?
1402                         preview_angle_clicked(camera_idx);
1403                 }
1404         });
1405 }
1406
1407 void MainWindow::set_master_speed(float speed)
1408 {
1409         speed = min(max(speed, 0.1f), 2.0f);
1410
1411         post_to_main_thread([this, speed] {
1412                 if (ui->speed_lock_btn->isChecked()) {
1413                         midi_mapper.set_locked(MIDIMapper::Blinking);
1414                         lock_blink_timeout->start(1000);
1415                         return;
1416                 }
1417
1418                 int percent = lrintf(speed * 100.0f);
1419                 ui->speed_slider->blockSignals(true);
1420                 ui->speed_slider->setValue(percent);
1421                 ui->speed_slider->blockSignals(false);
1422                 ui->speed_lock_btn->setText(QString::fromStdString(" " + to_string(percent) + "%"));
1423
1424                 live_player->set_master_speed(speed);
1425                 midi_mapper.set_speed_light(speed);
1426         });
1427 }
1428
1429 void MainWindow::cue_in()
1430 {
1431         post_to_main_thread([this] { cue_in_clicked(); });
1432 }
1433
1434 void MainWindow::cue_out()
1435 {
1436         post_to_main_thread([this] { cue_out_clicked(); });
1437 }
1438
1439 template<class Model>
1440 void MainWindow::replace_model(QTableView *view, Model **model, Model *new_model)
1441 {
1442         QItemSelectionModel *old_selection_model = view->selectionModel();
1443         view->setModel(new_model);
1444         delete *model;
1445         delete old_selection_model;
1446         *model = new_model;
1447         connect(new_model, &Model::any_content_changed, this, &MainWindow::content_changed);
1448 }
1449
1450 void MainWindow::start_tally()
1451 {
1452         http_reply = http.get(QNetworkRequest(QString::fromStdString(global_flags.tally_url)));
1453         connect(http_reply, &QNetworkReply::finished, this, &MainWindow::tally_received);
1454 }
1455
1456 void MainWindow::tally_received()
1457 {
1458         unsigned time_to_next_tally_ms;
1459         if (http_reply->error()) {
1460                 fprintf(stderr, "HTTP get of '%s' failed: %s\n", global_flags.tally_url.c_str(),
1461                         http_reply->errorString().toStdString().c_str());
1462                 ui->live_frame->setStyleSheet("");
1463                 time_to_next_tally_ms = 1000;
1464         } else {
1465                 string contents = http_reply->readAll().toStdString();
1466                 ui->live_frame->setStyleSheet(QString::fromStdString("background: " + contents));
1467                 time_to_next_tally_ms = 100;
1468         }
1469         http_reply->deleteLater();
1470         http_reply = nullptr;
1471
1472         QTimer::singleShot(time_to_next_tally_ms, this, &MainWindow::start_tally);
1473 }