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 = get_playlist(0, playlist_clips->size());
 633         live_player->splice_play(clips);
 634
 635         // Serialize the state.
 636         if (defer_timeout->isActive() &&
 637             (!currently_deferring_model_changes || deferred_change_id != current_change_id)) {
 638                 // There's some deferred event waiting, but this event is unrelated.
 639                 // So it's time to short-circuit that timer and do the work it wanted to do.
 640                 defer_timeout->stop();
 641                 state_changed(deferred_state);
 642         }
 643         StateProto state;
 644         *state.mutable_clip_list() = cliplist_clips->serialize();
 645         *state.mutable_play_list() = playlist_clips->serialize();
 646         if (currently_deferring_model_changes) {
 647                 deferred_change_id = current_change_id;
 648                 deferred_state = std::move(state);
 649                 defer_timeout->start(200);
 650                 return;
 651         }
 652         state_changed(state);
 653 }
 654
 655 void MainWindow::state_changed(const StateProto &state)
 656 {
 657         db.store_state(state);
 658
 659         redo_stack.clear();
 660         ui->redo_action->setEnabled(false);
 661
 662         undo_stack.push_back(state);
 663         ui->undo_action->setEnabled(undo_stack.size() > 1);
 664
 665         // Make sure it doesn't grow without bounds.
 666         while (undo_stack.size() >= 100) {
 667                 undo_stack.pop_front();
 668         }
 669 }
 670
 671 void MainWindow::save_settings()
 672 {
 673         SettingsProto settings;
 674         settings.set_interpolation_quality(global_flags.interpolation_quality + 1);
 675         settings.set_cue_in_point_padding_seconds(global_flags.cue_in_point_padding_seconds);
 676         settings.set_cue_out_point_padding_seconds(global_flags.cue_out_point_padding_seconds);
 677         db.store_settings(settings);
 678 }
 679
 680 void MainWindow::lock_blink_timer_expired()
 681 {
 682         midi_mapper.set_locked(MIDIMapper::LightState(ui->speed_lock_btn->isChecked()));  // Presumably On, or the timer should have been canceled.
 683 }
 684
 685 void MainWindow::play_clicked()
 686 {
 687         QItemSelectionModel *selected = ui->playlist->selectionModel();
 688         if (!selected->hasSelection()) {
 689                 return;
 690         }
 691         unsigned start_row = selected->selectedRows(0)[0].row();
 692
 693         vector<ClipWithID> clips = get_playlist(start_row, playlist_clips->size());
 694         live_player->play(clips);
 695         playlist_clips->set_progress({ { start_row, 0.0f } });
 696         ui->playlist->selectionModel()->clear();
 697         ui->stop_btn->setEnabled(true);
 698         playlist_selection_changed();
 699 }
 700
 701 void MainWindow::next_clicked()
 702 {
 703         live_player->skip_to_next();
 704 }
 705
 706 void MainWindow::stop_clicked()
 707 {
 708         Clip fake_clip;
 709         fake_clip.pts_in = 0;
 710         fake_clip.pts_out = 0;
 711         playlist_clips->set_progress({});
 712         live_player->play(fake_clip);
 713         ui->stop_btn->setEnabled(false);
 714         playlist_selection_changed();
 715 }
 716
 717 void MainWindow::speed_slider_changed(int percent)
 718 {
 719         float speed = percent / 100.0f;
 720         ui->speed_lock_btn->setText(QString::fromStdString(" " + to_string(percent) + "%"));
 721         live_player->set_master_speed(speed);
 722         midi_mapper.set_speed_light(speed);
 723 }
 724
 725 void MainWindow::speed_lock_clicked()
 726 {
 727         // TODO: Make for a less abrupt transition if we're not already at 100%.
 728         ui->speed_slider->setValue(100);  // Also actually sets the master speed and updates the label.
 729         ui->speed_slider->setEnabled(!ui->speed_lock_btn->isChecked());
 730         midi_mapper.set_locked(MIDIMapper::LightState(ui->speed_lock_btn->isChecked()));
 731         lock_blink_timeout->stop();
 732 }
 733
 734 void MainWindow::preview_player_done()
 735 {
 736         preview_playing = false;
 737         enable_or_disable_preview_button();
 738 }
 739
 740 void MainWindow::live_player_done()
 741 {
 742         playlist_clips->set_progress({});
 743         ui->stop_btn->setEnabled(false);
 744         playlist_selection_changed();
 745 }
 746
 747 void MainWindow::live_player_clip_progress(const map<uint64_t, double> &progress, TimeRemaining time_remaining)
 748 {
 749         playlist_clips->set_progress(progress);
 750         set_output_status(format_duration(time_remaining) + " left");
 751 }
 752
 753 void MainWindow::resizeEvent(QResizeEvent *event)
 754 {
 755         QMainWindow::resizeEvent(event);
 756
 757         // Ask for a relayout, but only after the event loop is done doing relayout
 758         // on everything else.
 759         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 760 }
 761
 762 void MainWindow::relayout()
 763 {
 764         ui->live_display->setMinimumWidth(ui->live_display->height() * 16 / 9);
 765         ui->preview_display->setMinimumWidth(ui->preview_display->height() * 16 / 9);
 766 }
 767
 768 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 769 {
 770         constexpr int dead_zone_pixels = 3;  // To avoid that simple clicks get misinterpreted.
 771         int scrub_sensitivity = 100;  // pts units per pixel.
 772         int wheel_sensitivity = 100;  // pts units per degree.
 773
 774         if (event->type() == QEvent::FocusIn || event->type() == QEvent::FocusOut) {
 775                 enable_or_disable_preview_button();
 776                 playlist_selection_changed();
 777                 hidden_jog_column = -1;
 778         }
 779
 780         unsigned stream_idx = ui->preview_display->get_stream_idx();
 781
 782         if (watched == ui->clip_list) {
 783                 if (event->type() == QEvent::FocusOut) {
 784                         highlight_camera_input(-1);
 785                 }
 786                 return false;
 787         }
 788
 789         if (event->type() != QEvent::Wheel) {
 790                 last_mousewheel_camera_row = -1;
 791         }
 792
 793         if (event->type() == QEvent::MouseButtonPress) {
 794                 QMouseEvent *mouse = (QMouseEvent *)event;
 795
 796                 QTableView *destination;
 797                 ScrubType type;
 798
 799                 if (watched == ui->clip_list->viewport()) {
 800                         destination = ui->clip_list;
 801                         type = SCRUBBING_CLIP_LIST;
 802                 } else if (watched == ui->playlist->viewport()) {
 803                         destination = ui->playlist;
 804                         type = SCRUBBING_PLAYLIST;
 805                 } else {
 806                         return false;
 807                 }
 808                 int column = destination->columnAt(mouse->x());
 809                 int row = destination->rowAt(mouse->y());
 810                 if (column == -1 || row == -1)
 811                         return false;
 812
 813                 if (type == SCRUBBING_CLIP_LIST) {
 814                         if (ClipList::Column(column) == ClipList::Column::IN) {
 815                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_in;
 816                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 817                         } else if (ClipList::Column(column) == ClipList::Column::OUT) {
 818                                 scrub_pts_origin = cliplist_clips->clip(row)->pts_out;
 819                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 820                         } else {
 821                                 return false;
 822                         }
 823                 } else {
 824                         if (PlayList::Column(column) == PlayList::Column::IN) {
 825                                 scrub_pts_origin = playlist_clips->clip(row)->pts_in;
 826                                 preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
 827                         } else if (PlayList::Column(column) == PlayList::Column::OUT) {
 828                                 scrub_pts_origin = playlist_clips->clip(row)->pts_out;
 829                                 preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
 830                         } else {
 831                                 return false;
 832                         }
 833                 }
 834
 835                 scrubbing = true;
 836                 scrub_row = row;
 837                 scrub_column = column;
 838                 scrub_x_origin = mouse->x();
 839                 scrub_type = type;
 840         } else if (event->type() == QEvent::MouseMove) {
 841                 QMouseEvent *mouse = (QMouseEvent *)event;
 842                 if (mouse->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 843                         scrub_sensitivity *= 10;
 844                         wheel_sensitivity *= 10;
 845                         if (mouse->modifiers() & Qt::KeyboardModifier::ControlModifier) {
 846                                 // Ctrl+Shift is a super-modifier, meant only for things like “go back two hours”.
 847                                 scrub_sensitivity *= 100;
 848                                 wheel_sensitivity *= 100;
 849                         }
 850                 }
 851                 if (mouse->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 852                         scrub_sensitivity /= 10;
 853                         wheel_sensitivity /= 10;
 854                 }
 855                 if (scrubbing) {
 856                         int offset = mouse->x() - scrub_x_origin;
 857                         int adjusted_offset;
 858                         if (offset >= dead_zone_pixels) {
 859                                 adjusted_offset = offset - dead_zone_pixels;
 860                         } else if (offset < -dead_zone_pixels) {
 861                                 adjusted_offset = offset + dead_zone_pixels;
 862                         } else {
 863                                 adjusted_offset = 0;
 864                         }
 865
 866                         int64_t pts = scrub_pts_origin + adjusted_offset * scrub_sensitivity;
 867                         currently_deferring_model_changes = true;
 868                         if (scrub_type == SCRUBBING_CLIP_LIST) {
 869                                 ClipProxy clip = cliplist_clips->mutable_clip(scrub_row);
 870                                 if (scrub_column == int(ClipList::Column::IN)) {
 871                                         current_change_id = "cliplist:in:" + to_string(scrub_row);
 872                                         set_pts_in(pts, current_pts, clip);
 873                                         preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
 874                                 } else {
 875                                         current_change_id = "cliplist:out" + to_string(scrub_row);
 876                                         pts = std::max(pts, clip->pts_in);
 877                                         pts = std::min(pts, current_pts);
 878                                         clip->pts_out = pts;
 879                                         preview_single_frame(pts, stream_idx, LAST_BEFORE);
 880                                 }
 881                         } else {
 882                                 ClipProxy clip = playlist_clips->mutable_clip(scrub_row);
 883                                 if (scrub_column == int(PlayList::Column::IN)) {
 884                                         current_change_id = "playlist:in:" + to_string(scrub_row);
 885                                         set_pts_in(pts, current_pts, clip);
 886                                         preview_single_frame(pts, clip->stream_idx, FIRST_AT_OR_AFTER);
 887                                 } else {
 888                                         current_change_id = "playlist:out:" + to_string(scrub_row);
 889                                         pts = std::max(pts, clip->pts_in);
 890                                         pts = std::min(pts, current_pts);
 891                                         clip->pts_out = pts;
 892                                         preview_single_frame(pts, clip->stream_idx, LAST_BEFORE);
 893                                 }
 894                         }
 895                         currently_deferring_model_changes = false;
 896
 897                         return true;  // Don't use this mouse movement for selecting things.
 898                 }
 899         } else if (event->type() == QEvent::Wheel) {
 900                 QWheelEvent *wheel = (QWheelEvent *)event;
 901                 int angle_delta = wheel->angleDelta().y();
 902                 if (wheel->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
 903                         scrub_sensitivity *= 10;
 904                         wheel_sensitivity *= 10;
 905                         if (wheel->modifiers() & Qt::KeyboardModifier::ControlModifier) {
 906                                 // Ctrl+Shift is a super-modifier, meant only for things like “go back two hours”.
 907                                 scrub_sensitivity *= 100;
 908                                 wheel_sensitivity *= 100;
 909                         }
 910                 }
 911                 if (wheel->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
 912                         scrub_sensitivity /= 10;
 913                         wheel_sensitivity /= 10;
 914                         angle_delta = wheel->angleDelta().x();  // Qt ickiness.
 915                 }
 916
 917                 QTableView *destination;
 918                 JogDestination jog_destination;
 919                 if (watched == ui->clip_list->viewport()) {
 920                         destination = ui->clip_list;
 921                         jog_destination = JOG_CLIP_LIST;
 922                         last_mousewheel_camera_row = -1;
 923                 } else if (watched == ui->playlist->viewport()) {
 924                         destination = ui->playlist;
 925                         jog_destination = JOG_PLAYLIST;
 926                         if (destination->columnAt(wheel->x()) != int(PlayList::Column::CAMERA)) {
 927                                 last_mousewheel_camera_row = -1;
 928                         }
 929                 } else {
 930                         last_mousewheel_camera_row = -1;
 931                         return false;
 932                 }
 933
 934                 int column = destination->columnAt(wheel->x());
 935                 int row = destination->rowAt(wheel->y());
 936                 if (column == -1 || row == -1)
 937                         return false;
 938
 939                 // Only adjust pts with the wheel if the given row is selected.
 940                 if (!destination->hasFocus() ||
 941                     row != destination->selectionModel()->currentIndex().row()) {
 942                         return false;
 943                 }
 944
 945                 jog_internal(jog_destination, row, column, stream_idx, angle_delta * wheel_sensitivity);
 946                 return true;  // Don't scroll.
 947         } else if (event->type() == QEvent::MouseButtonRelease) {
 948                 scrubbing = false;
 949         }
 950         return false;
 951 }
 952
 953 void MainWindow::preview_single_frame(int64_t pts, unsigned stream_idx, MainWindow::Rounding rounding)
 954 {
 955         if (rounding == LAST_BEFORE) {
 956                 lock_guard<mutex> lock(frame_mu);
 957                 if (frames[stream_idx].empty())
 958                         return;
 959                 auto it = find_last_frame_before(frames[stream_idx], pts);
 960                 if (it != frames[stream_idx].end()) {
 961                         pts = it->pts;
 962                 }
 963         } else {
 964                 assert(rounding == FIRST_AT_OR_AFTER);
 965                 lock_guard<mutex> lock(frame_mu);
 966                 if (frames[stream_idx].empty())
 967                         return;
 968                 auto it = find_first_frame_at_or_after(frames[stream_idx], pts);
 969                 if (it != frames[stream_idx].end()) {
 970                         pts = it->pts;
 971                 }
 972         }
 973
 974         Clip fake_clip;
 975         fake_clip.pts_in = pts;
 976         fake_clip.pts_out = pts + 1;
 977         fake_clip.stream_idx = stream_idx;
 978         preview_player->play(fake_clip);
 979 }
 980
 981 void MainWindow::playlist_selection_changed()
 982 {
 983         enable_or_disable_preview_button();
 984
 985         QItemSelectionModel *selected = ui->playlist->selectionModel();
 986         bool any_selected = selected->hasSelection();
 987         ui->playlist_duplicate_btn->setEnabled(any_selected);
 988         ui->playlist_remove_btn->setEnabled(any_selected);
 989         ui->playlist_move_up_btn->setEnabled(
 990                 any_selected && selected->selectedRows().front().row() > 0);
 991         ui->playlist_move_down_btn->setEnabled(
 992                 any_selected && selected->selectedRows().back().row() < int(playlist_clips->size()) - 1);
 993
 994         ui->play_btn->setEnabled(any_selected);
 995         ui->next_btn->setEnabled(ui->stop_btn->isEnabled());  // TODO: Perhaps not if we're on the last clip?
 996         midi_mapper.set_next_ready(ui->next_btn->isEnabled() ? MIDIMapper::On : MIDIMapper::Off);
 997
 998         // NOTE: The hidden button is still reachable by keyboard or MIDI.
 999         if (any_selected) {
1000                 ui->play_btn->setVisible(true);
1001         } else if (ui->stop_btn->isEnabled()) {  // Playing.
1002                 ui->play_btn->setVisible(false);
1003         } else {
1004                 ui->play_btn->setVisible(true);
1005         }
1006         ui->next_btn->setVisible(!ui->play_btn->isVisible());
1007
1008         if (ui->stop_btn->isEnabled()) {  // Playing.
1009                 midi_mapper.set_play_enabled(MIDIMapper::On);
1010         } else if (any_selected) {
1011                 midi_mapper.set_play_enabled(MIDIMapper::Blinking);
1012         } else {
1013                 midi_mapper.set_play_enabled(MIDIMapper::Off);
1014         }
1015
1016         if (!any_selected) {
1017                 set_output_status("paused");
1018         } else {
1019                 vector<ClipWithID> clips;
1020                 for (size_t row = selected->selectedRows().front().row(); row < playlist_clips->size(); ++row) {
1021                         clips.emplace_back(*playlist_clips->clip_with_id(row));
1022                 }
1023                 TimeRemaining remaining = compute_total_time(clips);
1024                 set_output_status(format_duration(remaining) + " ready");
1025         }
1026 }
1027
1028 void MainWindow::clip_list_selection_changed(const QModelIndex &current, const QModelIndex &previous)
1029 {
1030         int camera_selected = -1;
1031         if (cliplist_clips->is_camera_column(current.column())) {
1032                 camera_selected = current.column() - int(ClipList::Column::CAMERA_1);
1033
1034                 // See the comment on hidden_jog_column.
1035                 if (current.row() != previous.row()) {
1036                         hidden_jog_column = -1;
1037                 } else if (hidden_jog_column == -1) {
1038                         hidden_jog_column = previous.column();
1039                 }
1040         } else {
1041                 hidden_jog_column = -1;
1042         }
1043         highlight_camera_input(camera_selected);
1044         enable_or_disable_queue_button();
1045 }
1046
1047 vector<ClipWithID> MainWindow::get_playlist(size_t start_row, size_t end_row)
1048 {
1049         vector<ClipWithID> clips;
1050         for (unsigned row = start_row; row < end_row; ++row) {
1051                 ClipWithID clip = *playlist_clips->clip_with_id(row);
1052                 if (clip.clip.pts_out == -1) {
1053                         clip.clip.pts_out = clip.clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
1054                 }
1055                 clips.emplace_back(clip);
1056         }
1057         return clips;
1058 }
1059
1060 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
1061 {
1062         char time_str[256];
1063         if (estimated_seconds_left < 60.0) {
1064                 strcpy(time_str, "<font color=\"red\">Less than a minute</font>");
1065         } else if (estimated_seconds_left < 1800.0) {  // Less than half an hour: Xm Ys (red).
1066                 int s = lrintf(estimated_seconds_left);
1067                 int m = s / 60;
1068                 s %= 60;
1069                 snprintf(time_str, sizeof(time_str), "<font color=\"red\">%dm %ds</font>", m, s);
1070         } else if (estimated_seconds_left < 3600.0) {  // Less than an hour: Xm.
1071                 int m = lrintf(estimated_seconds_left / 60.0);
1072                 snprintf(time_str, sizeof(time_str), "%dm", m);
1073         } else if (estimated_seconds_left < 36000.0) {  // Less than ten hours: Xh Ym.
1074                 int m = lrintf(estimated_seconds_left / 60.0);
1075                 int h = m / 60;
1076                 m %= 60;
1077                 snprintf(time_str, sizeof(time_str), "%dh %dm", h, m);
1078         } else {  // More than ten hours: Xh.
1079                 int h = lrintf(estimated_seconds_left / 3600.0);
1080                 snprintf(time_str, sizeof(time_str), "%dh", h);
1081         }
1082         char buf[256];
1083         snprintf(buf, sizeof(buf), "Disk free: %'.0f MB (approx. %s)", free_bytes / 1048576.0, time_str);
1084
1085         std::string label = buf;
1086
1087         post_to_main_thread([this, label] {
1088                 disk_free_label->setText(QString::fromStdString(label));
1089                 ui->menuBar->setCornerWidget(disk_free_label);  // Need to set this again for the sizing to get right.
1090         });
1091 }
1092
1093 void MainWindow::midi_mapping_triggered()
1094 {
1095         MIDIMappingDialog(&midi_mapper).exec();
1096 }
1097
1098 void MainWindow::exit_triggered()
1099 {
1100         close();
1101 }
1102
1103 void MainWindow::export_cliplist_clip_multitrack_triggered()
1104 {
1105         QItemSelectionModel *selected = ui->clip_list->selectionModel();
1106         if (!selected->hasSelection()) {
1107                 QMessageBox msgbox;
1108                 msgbox.setText("No clip selected in the clip list. Select one and try exporting again.");
1109                 msgbox.exec();
1110                 return;
1111         }
1112
1113         QModelIndex index = selected->currentIndex();
1114         Clip clip = *cliplist_clips->clip(index.row());
1115         QString filename = QFileDialog::getSaveFileName(this,
1116                 "Export multitrack clip", QString(), tr("Matroska video files (*.mkv)"));
1117         if (filename.isNull()) {
1118                 // Cancel.
1119                 return;
1120         }
1121         if (!filename.endsWith(".mkv")) {
1122                 filename += ".mkv";
1123         }
1124         export_multitrack_clip(filename.toStdString(), clip);
1125 }
1126
1127 void MainWindow::export_playlist_clip_interpolated_triggered()
1128 {
1129         QItemSelectionModel *selected = ui->playlist->selectionModel();
1130         if (!selected->hasSelection()) {
1131                 QMessageBox msgbox;
1132                 msgbox.setText("No clip selected in the playlist. Select one and try exporting again.");
1133                 msgbox.exec();
1134                 return;
1135         }
1136
1137         QString filename = QFileDialog::getSaveFileName(this,
1138                 "Export interpolated clip", QString(), tr("Matroska video files (*.mkv)"));
1139         if (filename.isNull()) {
1140                 // Cancel.
1141                 return;
1142         }
1143         if (!filename.endsWith(".mkv")) {
1144                 filename += ".mkv";
1145         }
1146
1147         vector<Clip> clips;
1148         QModelIndexList rows = selected->selectedRows();
1149         for (QModelIndex index : rows) {
1150                 clips.push_back(*playlist_clips->clip(index.row()));
1151         }
1152         export_interpolated_clip(filename.toStdString(), clips);
1153 }
1154
1155 void MainWindow::manual_triggered()
1156 {
1157         if (!QDesktopServices::openUrl(QUrl("https://nageru.sesse.net/doc/"))) {
1158                 QMessageBox msgbox;
1159                 msgbox.setText("Could not launch manual in web browser.\nPlease see https://nageru.sesse.net/doc/ manually.");
1160                 msgbox.exec();
1161         }
1162 }
1163
1164 void MainWindow::about_triggered()
1165 {
1166         AboutDialog("Futatabi", "Multicamera slow motion video server").exec();
1167 }
1168
1169 void MainWindow::undo_triggered()
1170 {
1171         // Finish any deferred action.
1172         if (defer_timeout->isActive()) {
1173                 defer_timeout->stop();
1174                 state_changed(deferred_state);
1175         }
1176
1177         StateProto redo_state;
1178         *redo_state.mutable_clip_list() = cliplist_clips->serialize();
1179         *redo_state.mutable_play_list() = playlist_clips->serialize();
1180         redo_stack.push_back(std::move(redo_state));
1181         ui->redo_action->setEnabled(true);
1182
1183         assert(undo_stack.size() > 1);
1184
1185         // Pop off the current state, which is always at the top of the stack.
1186         undo_stack.pop_back();
1187
1188         StateProto state = undo_stack.back();
1189         ui->undo_action->setEnabled(undo_stack.size() > 1);
1190
1191         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1192         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1193
1194         db.store_state(state);
1195 }
1196
1197 void MainWindow::redo_triggered()
1198 {
1199         assert(!redo_stack.empty());
1200
1201         ui->undo_action->setEnabled(true);
1202         ui->redo_action->setEnabled(true);
1203
1204         undo_stack.push_back(std::move(redo_stack.back()));
1205         redo_stack.pop_back();
1206         ui->undo_action->setEnabled(true);
1207         ui->redo_action->setEnabled(!redo_stack.empty());
1208
1209         const StateProto &state = undo_stack.back();
1210         replace_model(ui->clip_list, &cliplist_clips, new ClipList(state.clip_list()));
1211         replace_model(ui->playlist, &playlist_clips, new PlayList(state.play_list()));
1212
1213         db.store_state(state);
1214 }
1215
1216 void MainWindow::quality_toggled(int quality, bool checked)
1217 {
1218         if (!checked) {
1219                 return;
1220         }
1221         global_flags.interpolation_quality = quality;
1222         if (quality != 0 &&  // Turning interpolation off is always possible.
1223             quality != flow_initialized_interpolation_quality) {
1224                 QMessageBox msgbox;
1225                 msgbox.setText(QString::fromStdString(
1226                         "The interpolation quality for the main output cannot be changed at runtime, "
1227                         "except being turned completely off; it will take effect for exported files "
1228                         "only until next restart. The live output quality thus remains at " +
1229                         to_string(flow_initialized_interpolation_quality) + "."));
1230                 msgbox.exec();
1231         }
1232
1233         save_settings();
1234 }
1235
1236 void MainWindow::in_padding_toggled(double seconds, bool checked)
1237 {
1238         if (!checked) {
1239                 return;
1240         }
1241         global_flags.cue_in_point_padding_seconds = seconds;
1242         save_settings();
1243 }
1244
1245 void MainWindow::out_padding_toggled(double seconds, bool checked)
1246 {
1247         if (!checked) {
1248                 return;
1249         }
1250         global_flags.cue_out_point_padding_seconds = seconds;
1251         save_settings();
1252 }
1253
1254 void MainWindow::hide_camera_toggled(unsigned camera_idx, bool checked)
1255 {
1256         displays[camera_idx].hidden = checked;
1257         relayout_displays();
1258 }
1259
1260 void MainWindow::highlight_camera_input(int stream_idx)
1261 {
1262         for (unsigned i = 0; i < num_cameras; ++i) {
1263                 if (unsigned(stream_idx) == i) {
1264                         displays[i].frame->setStyleSheet("background: rgb(0,255,0)");
1265                 } else {
1266                         displays[i].frame->setStyleSheet("");
1267                 }
1268         }
1269         midi_mapper.highlight_camera_input(stream_idx);
1270 }
1271
1272 void MainWindow::enable_or_disable_preview_button()
1273 {
1274         // Follows the logic in preview_clicked().
1275
1276         if (ui->playlist->hasFocus()) {
1277                 // Allow the playlist as preview iff it has focus and something is selected.
1278                 // TODO: Is this part really relevant?
1279                 QItemSelectionModel *selected = ui->playlist->selectionModel();
1280                 if (selected->hasSelection()) {
1281                         ui->preview_btn->setEnabled(true);
1282                         midi_mapper.set_preview_enabled(preview_playing ? MIDIMapper::On : MIDIMapper::Blinking);
1283                         return;
1284                 }
1285         }
1286
1287         // TODO: Perhaps only enable this if something is actually selected.
1288         ui->preview_btn->setEnabled(!cliplist_clips->empty());
1289         if (preview_playing) {
1290                 midi_mapper.set_preview_enabled(MIDIMapper::On);
1291         } else {
1292                 midi_mapper.set_preview_enabled(cliplist_clips->empty() ? MIDIMapper::Off : MIDIMapper::Blinking);
1293         }
1294 }
1295
1296 void MainWindow::enable_or_disable_queue_button()
1297 {
1298         // Follows the logic in queue_clicked().
1299         // TODO: Perhaps only enable this if something is actually selected.
1300
1301         bool enabled;
1302
1303         if (cliplist_clips->empty()) {
1304                 enabled = false;
1305         } else {
1306                 enabled = true;
1307         }
1308
1309         ui->queue_btn->setEnabled(enabled);
1310         midi_mapper.set_queue_enabled(enabled);
1311 }
1312
1313 void MainWindow::set_output_status(const string &status)
1314 {
1315         ui->live_label->setText(QString::fromStdString("Current output (" + status + ")"));
1316         if (live_player != nullptr) {
1317                 live_player->set_pause_status(status);
1318         }
1319
1320         lock_guard<mutex> lock(queue_status_mu);
1321         queue_status = status;
1322 }
1323
1324 pair<string, string> MainWindow::get_queue_status() const
1325 {
1326         lock_guard<mutex> lock(queue_status_mu);
1327         return { queue_status, "text/plain" };
1328 }
1329
1330 void MainWindow::display_frame(unsigned stream_idx, const FrameOnDisk &frame)
1331 {
1332         if (stream_idx >= MAX_STREAMS) {
1333                 fprintf(stderr, "WARNING: Ignoring too-high stream index %u.\n", stream_idx);
1334                 return;
1335         }
1336         if (stream_idx >= num_cameras) {
1337                 post_to_main_thread_and_wait([this, stream_idx] {
1338                         num_cameras = stream_idx + 1;
1339                         change_num_cameras();
1340                 });
1341         }
1342         displays[stream_idx].display->setFrame(stream_idx, frame);
1343 }
1344
1345 void MainWindow::preview()
1346 {
1347         post_to_main_thread([this] {
1348                 preview_clicked();
1349         });
1350 }
1351
1352 void MainWindow::queue()
1353 {
1354         post_to_main_thread([this] {
1355                 queue_clicked();
1356         });
1357 }
1358
1359 void MainWindow::play()
1360 {
1361         post_to_main_thread([this] {
1362                 play_clicked();
1363         });
1364 }
1365
1366 void MainWindow::next()
1367 {
1368         post_to_main_thread([this] {
1369                 next_clicked();
1370         });
1371 }
1372
1373 void MainWindow::toggle_lock()
1374 {
1375         post_to_main_thread([this] {
1376                 ui->speed_lock_btn->setChecked(!ui->speed_lock_btn->isChecked());
1377                 speed_lock_clicked();
1378         });
1379 }
1380
1381 void MainWindow::jog(int delta)
1382 {
1383         post_to_main_thread([this, delta] {
1384                 int64_t pts_delta = delta * (TIMEBASE / 60);  // One click = frame at 60 fps.
1385                 if (ui->playlist->hasFocus()) {
1386                         QModelIndex selected = ui->playlist->selectionModel()->currentIndex();
1387                         if (selected.column() != -1 && selected.row() != -1) {
1388                                 jog_internal(JOG_PLAYLIST, selected.row(), selected.column(), /*stream_idx=*/-1, pts_delta);
1389                         }
1390                 } else if (ui->clip_list->hasFocus()) {
1391                         QModelIndex selected = ui->clip_list->selectionModel()->currentIndex();
1392                         if (cliplist_clips->is_camera_column(selected.column()) &&
1393                             hidden_jog_column != -1) {
1394                                 // See the definition on hidden_jog_column.
1395                                 selected = selected.sibling(selected.row(), hidden_jog_column);
1396                                 ui->clip_list->selectionModel()->setCurrentIndex(selected, QItemSelectionModel::ClearAndSelect);
1397                                 hidden_jog_column = -1;
1398                         }
1399                         if (selected.column() != -1 && selected.row() != -1) {
1400                                 jog_internal(JOG_CLIP_LIST, selected.row(), selected.column(), ui->preview_display->get_stream_idx(), pts_delta);
1401                         }
1402                 }
1403         });
1404 }
1405
1406 void MainWindow::switch_camera(unsigned camera_idx)
1407 {
1408         post_to_main_thread([this, camera_idx] {
1409                 if (camera_idx < num_cameras) {  // TODO: Also make this change a highlighted clip?
1410                         preview_angle_clicked(camera_idx);
1411                 }
1412         });
1413 }
1414
1415 void MainWindow::set_master_speed(float speed)
1416 {
1417         speed = min(max(speed, 0.1f), 2.0f);
1418
1419         post_to_main_thread([this, speed] {
1420                 if (ui->speed_lock_btn->isChecked()) {
1421                         midi_mapper.set_locked(MIDIMapper::Blinking);
1422                         lock_blink_timeout->start(1000);
1423                         return;
1424                 }
1425
1426                 int percent = lrintf(speed * 100.0f);
1427                 ui->speed_slider->blockSignals(true);
1428                 ui->speed_slider->setValue(percent);
1429                 ui->speed_slider->blockSignals(false);
1430                 ui->speed_lock_btn->setText(QString::fromStdString(" " + to_string(percent) + "%"));
1431
1432                 live_player->set_master_speed(speed);
1433                 midi_mapper.set_speed_light(speed);
1434         });
1435 }
1436
1437 void MainWindow::cue_in()
1438 {
1439         post_to_main_thread([this] { cue_in_clicked(); });
1440 }
1441
1442 void MainWindow::cue_out()
1443 {
1444         post_to_main_thread([this] { cue_out_clicked(); });
1445 }
1446
1447 template<class Model>
1448 void MainWindow::replace_model(QTableView *view, Model **model, Model *new_model)
1449 {
1450         QItemSelectionModel *old_selection_model = view->selectionModel();
1451         view->setModel(new_model);
1452         delete *model;
1453         delete old_selection_model;
1454         *model = new_model;
1455         connect(new_model, &Model::any_content_changed, this, &MainWindow::content_changed);
1456 }
1457
1458 void MainWindow::start_tally()
1459 {
1460         http_reply = http.get(QNetworkRequest(QString::fromStdString(global_flags.tally_url)));
1461         connect(http_reply, &QNetworkReply::finished, this, &MainWindow::tally_received);
1462 }
1463
1464 void MainWindow::tally_received()
1465 {
1466         unsigned time_to_next_tally_ms;
1467         if (http_reply->error()) {
1468                 fprintf(stderr, "HTTP get of '%s' failed: %s\n", global_flags.tally_url.c_str(),
1469                         http_reply->errorString().toStdString().c_str());
1470                 ui->live_frame->setStyleSheet("");
1471                 time_to_next_tally_ms = 1000;
1472         } else {
1473                 string contents = http_reply->readAll().toStdString();
1474                 ui->live_frame->setStyleSheet(QString::fromStdString("background: " + contents));
1475                 time_to_next_tally_ms = 100;
1476         }
1477         http_reply->deleteLater();
1478         http_reply = nullptr;
1479
1480         QTimer::singleShot(time_to_next_tally_ms, this, &MainWindow::start_tally);
1481 }