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

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