]> git.sesse.net Git - nageru/blobdiff - futatabi/mainwindow.cpp
In Futatabi, make it possible to set custom source labels.
[nageru] / futatabi / mainwindow.cpp
index 350b1b2966d5327b20f0980b21e3eda31de401d3..49581e53caeb134d180b1bba5546a8083fec05fa 100644 (file)
@@ -6,6 +6,7 @@
 #include "frame_on_disk.h"
 #include "player.h"
 #include "futatabi_midi_mapping.pb.h"
+#include "midi_mapping_dialog.h"
 #include "shared/aboutdialog.h"
 #include "shared/disk_space_estimator.h"
 #include "shared/post_to_main_thread.h"
@@ -64,8 +65,11 @@ MainWindow::MainWindow()
                        global_flags.interpolation_quality = settings.interpolation_quality() - 1;
                }
        }
-       if (!global_flags.cue_point_padding_set) {
-               global_flags.cue_point_padding_seconds = settings.cue_point_padding_seconds();  // Default 0 is fine.
+       if (!global_flags.cue_in_point_padding_set) {
+               global_flags.cue_in_point_padding_seconds = settings.cue_in_point_padding_seconds();  // Default 0 is fine.
+       }
+       if (!global_flags.cue_out_point_padding_set) {
+               global_flags.cue_out_point_padding_seconds = settings.cue_out_point_padding_seconds();  // Default 0 is fine.
        }
        if (global_flags.interpolation_quality == 0) {
                // Allocate something just for simplicity; we won't be using it
@@ -77,6 +81,7 @@ MainWindow::MainWindow()
        save_settings();
 
        // The menus.
+       connect(ui->midi_mapping_action, &QAction::triggered, this, &MainWindow::midi_mapping_triggered);
        connect(ui->exit_action, &QAction::triggered, this, &MainWindow::exit_triggered);
        connect(ui->export_cliplist_clip_multitrack_action, &QAction::triggered, this, &MainWindow::export_cliplist_clip_multitrack_triggered);
        connect(ui->export_playlist_clip_interpolated_action, &QAction::triggered, this, &MainWindow::export_playlist_clip_interpolated_triggered);
@@ -113,27 +118,49 @@ MainWindow::MainWindow()
        connect(ui->quality_3_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 3, _1));
        connect(ui->quality_4_action, &QAction::toggled, bind(&MainWindow::quality_toggled, this, 4, _1));
 
-       // The cue point padding group.
-       QActionGroup *padding_group = new QActionGroup(ui->interpolation_menu);
-       padding_group->addAction(ui->padding_0_action);
-       padding_group->addAction(ui->padding_1_action);
-       padding_group->addAction(ui->padding_2_action);
-       padding_group->addAction(ui->padding_5_action);
-       if (global_flags.cue_point_padding_seconds <= 1e-3) {
-               ui->padding_0_action->setChecked(true);
-       } else if (fabs(global_flags.cue_point_padding_seconds - 1.0) < 1e-3) {
-               ui->padding_1_action->setChecked(true);
-       } else if (fabs(global_flags.cue_point_padding_seconds - 2.0) < 1e-3) {
-               ui->padding_2_action->setChecked(true);
-       } else if (fabs(global_flags.cue_point_padding_seconds - 5.0) < 1e-3) {
-               ui->padding_5_action->setChecked(true);
+       // The cue-in point padding group.
+       QActionGroup *in_padding_group = new QActionGroup(ui->in_padding_menu);
+       in_padding_group->addAction(ui->in_padding_0_action);
+       in_padding_group->addAction(ui->in_padding_1_action);
+       in_padding_group->addAction(ui->in_padding_2_action);
+       in_padding_group->addAction(ui->in_padding_5_action);
+       if (global_flags.cue_in_point_padding_seconds <= 1e-3) {
+               ui->in_padding_0_action->setChecked(true);
+       } else if (fabs(global_flags.cue_in_point_padding_seconds - 1.0) < 1e-3) {
+               ui->in_padding_1_action->setChecked(true);
+       } else if (fabs(global_flags.cue_in_point_padding_seconds - 2.0) < 1e-3) {
+               ui->in_padding_2_action->setChecked(true);
+       } else if (fabs(global_flags.cue_in_point_padding_seconds - 5.0) < 1e-3) {
+               ui->in_padding_5_action->setChecked(true);
+       } else {
+               // Nothing to check, which is fine.
+       }
+       connect(ui->in_padding_0_action, &QAction::toggled, bind(&MainWindow::in_padding_toggled, this, 0.0, _1));
+       connect(ui->in_padding_1_action, &QAction::toggled, bind(&MainWindow::in_padding_toggled, this, 1.0, _1));
+       connect(ui->in_padding_2_action, &QAction::toggled, bind(&MainWindow::in_padding_toggled, this, 2.0, _1));
+       connect(ui->in_padding_5_action, &QAction::toggled, bind(&MainWindow::in_padding_toggled, this, 5.0, _1));
+
+       // Same for the cue-out padding.
+       QActionGroup *out_padding_group = new QActionGroup(ui->out_padding_menu);
+       out_padding_group->addAction(ui->out_padding_0_action);
+       out_padding_group->addAction(ui->out_padding_1_action);
+       out_padding_group->addAction(ui->out_padding_2_action);
+       out_padding_group->addAction(ui->out_padding_5_action);
+       if (global_flags.cue_out_point_padding_seconds <= 1e-3) {
+               ui->out_padding_0_action->setChecked(true);
+       } else if (fabs(global_flags.cue_out_point_padding_seconds - 1.0) < 1e-3) {
+               ui->out_padding_1_action->setChecked(true);
+       } else if (fabs(global_flags.cue_out_point_padding_seconds - 2.0) < 1e-3) {
+               ui->out_padding_2_action->setChecked(true);
+       } else if (fabs(global_flags.cue_out_point_padding_seconds - 5.0) < 1e-3) {
+               ui->out_padding_5_action->setChecked(true);
        } else {
                // Nothing to check, which is fine.
        }
-       connect(ui->padding_0_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 0.0, _1));
-       connect(ui->padding_1_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 1.0, _1));
-       connect(ui->padding_2_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 2.0, _1));
-       connect(ui->padding_5_action, &QAction::toggled, bind(&MainWindow::padding_toggled, this, 5.0, _1));
+       connect(ui->out_padding_0_action, &QAction::toggled, bind(&MainWindow::out_padding_toggled, this, 0.0, _1));
+       connect(ui->out_padding_1_action, &QAction::toggled, bind(&MainWindow::out_padding_toggled, this, 1.0, _1));
+       connect(ui->out_padding_2_action, &QAction::toggled, bind(&MainWindow::out_padding_toggled, this, 2.0, _1));
+       connect(ui->out_padding_5_action, &QAction::toggled, bind(&MainWindow::out_padding_toggled, this, 5.0, _1));
 
        global_disk_space_estimator = new DiskSpaceEstimator(bind(&MainWindow::report_disk_space, this, _1, _2));
        disk_free_label = new QLabel(this);
@@ -178,9 +205,16 @@ MainWindow::MainWindow()
        connect(play, &QShortcut::activated, ui->play_btn, &QPushButton::click);
        connect(ui->play_btn, &QPushButton::clicked, this, &MainWindow::play_clicked);
 
+       QShortcut *next = new QShortcut(QKeySequence(Qt::Key_N), this);
+       connect(next, &QShortcut::activated, ui->next_btn, &QPushButton::click);
+       connect(ui->next_btn, &QPushButton::clicked, this, &MainWindow::next_clicked);
+
        connect(ui->stop_btn, &QPushButton::clicked, this, &MainWindow::stop_clicked);
        ui->stop_btn->setEnabled(false);
 
+       connect(ui->speed_slider, &QAbstractSlider::valueChanged, this, &MainWindow::speed_slider_changed);
+       connect(ui->speed_lock_btn, &QPushButton::clicked, this, &MainWindow::speed_lock_clicked);
+
        connect(ui->playlist_duplicate_btn, &QPushButton::clicked, this, &MainWindow::playlist_duplicate);
 
        connect(ui->playlist_remove_btn, &QPushButton::clicked, this, &MainWindow::playlist_remove);
@@ -200,13 +234,19 @@ MainWindow::MainWindow()
        playlist_selection_changed();  // First time set-up.
 
        preview_player.reset(new Player(ui->preview_display, Player::NO_STREAM_OUTPUT));
+       preview_player->set_done_callback([this] {
+               post_to_main_thread([this] {
+                       preview_player_done();
+               });
+       });
+
        live_player.reset(new Player(ui->live_display, Player::HTTPD_STREAM_OUTPUT));
        live_player->set_done_callback([this] {
                post_to_main_thread([this] {
                        live_player_done();
                });
        });
-       live_player->set_progress_callback([this](const map<uint64_t, double> &progress, double time_remaining) {
+       live_player->set_progress_callback([this](const map<uint64_t, double> &progress, TimeRemaining time_remaining) {
                post_to_main_thread([this, progress, time_remaining] {
                        live_player_clip_progress(progress, time_remaining);
                });
@@ -219,6 +259,10 @@ MainWindow::MainWindow()
        connect(defer_timeout, &QTimer::timeout, this, &MainWindow::defer_timer_expired);
        ui->undo_action->setEnabled(true);
 
+       lock_blink_timeout = new QTimer(this);
+       lock_blink_timeout->setSingleShot(true);
+       connect(lock_blink_timeout, &QTimer::timeout, this, &MainWindow::lock_blink_timer_expired);
+
        connect(ui->clip_list->selectionModel(), &QItemSelectionModel::currentChanged,
                this, &MainWindow::clip_list_selection_changed);
        enable_or_disable_queue_button();
@@ -245,7 +289,7 @@ MainWindow::MainWindow()
                if (!load_midi_mapping_from_file(global_flags.midi_mapping_filename, &midi_mapping)) {
                        fprintf(stderr, "Couldn't load MIDI mapping '%s'; exiting.\n",
                                global_flags.midi_mapping_filename.c_str());
-                       exit(1);
+                       abort();
                }
                midi_mapper.set_midi_mapping(midi_mapping);
        }
@@ -257,9 +301,17 @@ void MainWindow::change_num_cameras()
 {
        assert(num_cameras >= displays.size());  // We only add, never remove.
 
+       // Make new entries to hide the displays.
+       for (unsigned i = displays.size(); i < num_cameras; ++i) {
+               char title[256];
+               snprintf(title, sizeof(title), "Camera %u", i + 1);
+               QAction *hide_action = ui->hide_camera_menu->addAction(title);
+               hide_action->setCheckable(true);
+               hide_action->setChecked(false);
+               connect(hide_action, &QAction::toggled, bind(&MainWindow::hide_camera_toggled, this, i, _1));
+       }
+
        // Make new display rows.
-       unsigned display_rows = (num_cameras + 1) / 2;
-       ui->video_displays->setStretch(1, display_rows);
        for (unsigned i = displays.size(); i < num_cameras; ++i) {
                QFrame *frame = new QFrame(this);
                frame->setAutoFillBackground(true);
@@ -272,15 +324,18 @@ void MainWindow::change_num_cameras()
                display->setAutoFillBackground(true);
                layout->addWidget(display);
 
-               ui->input_displays->addWidget(frame, i / 2, i % 2);
-               display->set_overlay(to_string(i + 1));
+               if (global_flags.source_labels.count(i + 1)) {
+                       display->set_overlay(global_flags.source_labels[i + 1]);
+               } else {
+                       display->set_overlay(to_string(i + 1));
+               }
 
                QPushButton *preview_btn = new QPushButton(this);
                preview_btn->setMaximumSize(20, 17);
                preview_btn->setText(QString::fromStdString(to_string(i + 1)));
                ui->preview_layout->addWidget(preview_btn);
 
-               displays.emplace_back(FrameAndDisplay{ frame, display, preview_btn });
+               displays.emplace_back(FrameAndDisplay{ frame, display, preview_btn, /*hidden=*/false });
 
                connect(display, &JPEGFrameView::clicked, preview_btn, &QPushButton::click);
                QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
@@ -288,6 +343,7 @@ void MainWindow::change_num_cameras()
 
                connect(preview_btn, &QPushButton::clicked, [this, i] { preview_angle_clicked(i); });
        }
+       relayout_displays();
 
        cliplist_clips->change_num_cameras(num_cameras);
        playlist_clips->change_num_cameras(num_cameras);
@@ -295,9 +351,34 @@ void MainWindow::change_num_cameras()
        QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
 }
 
+void MainWindow::relayout_displays()
+{
+       while (ui->input_displays->count() > 0) {
+               QLayoutItem *item = ui->input_displays->takeAt(0);
+               ui->input_displays->removeWidget(item->widget());
+       }
+
+       unsigned cell_idx = 0;
+       for (unsigned i = 0; i < displays.size(); ++i) {
+               if (displays[i].hidden) {
+                       displays[i].frame->setVisible(false);
+               } else {
+                       displays[i].frame->setVisible(true);
+                       ui->input_displays->addWidget(displays[i].frame, cell_idx / 2, cell_idx % 2);
+                       ++cell_idx;
+               }
+       }
+       ui->video_displays->setStretch(1, (cell_idx + 1) / 2);
+
+       QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
+}
+
 MainWindow::~MainWindow()
 {
-       // Empty so that we can forward-declare Player in the .h file.
+       // We don't have a context to release Player's OpenGL resources in here,
+       // so instead of crashing on exit, leak it.
+       live_player.release();
+       preview_player.release();
 }
 
 void MainWindow::cue_in_clicked()
@@ -306,11 +387,15 @@ void MainWindow::cue_in_clicked()
                cliplist_clips->mutable_back()->pts_in = current_pts;
        } else {
                Clip clip;
-               clip.pts_in = max<int64_t>(current_pts - lrint(global_flags.cue_point_padding_seconds * TIMEBASE), 0);
+               clip.pts_in = max<int64_t>(current_pts - lrint(global_flags.cue_in_point_padding_seconds * TIMEBASE), 0);
                cliplist_clips->add_clip(clip);
                playlist_selection_changed();
        }
 
+       // Show the clip in the preview.
+       unsigned stream_idx = ui->preview_display->get_stream_idx();
+       preview_single_frame(cliplist_clips->mutable_back()->pts_in, stream_idx, FIRST_AT_OR_AFTER);
+
        // Select the item so that we can jog it.
        ui->clip_list->setFocus();
        QModelIndex index = cliplist_clips->index(cliplist_clips->size() - 1, int(ClipList::Column::IN));
@@ -325,7 +410,11 @@ void MainWindow::cue_out_clicked()
                return;
        }
 
-       cliplist_clips->mutable_back()->pts_out = current_pts + lrint(global_flags.cue_point_padding_seconds * TIMEBASE);
+       cliplist_clips->mutable_back()->pts_out = current_pts + lrint(global_flags.cue_out_point_padding_seconds * TIMEBASE);
+
+       // Show the clip in the preview. (TODO: This won't take padding into account.)
+       unsigned stream_idx = ui->preview_display->get_stream_idx();
+       preview_single_frame(cliplist_clips->mutable_back()->pts_out, stream_idx, LAST_BEFORE);
 
        // Select the item so that we can jog it.
        ui->clip_list->setFocus();
@@ -347,11 +436,9 @@ void MainWindow::queue_clicked()
        if (!selected->hasSelection()) {
                Clip clip = *cliplist_clips->back();
                clip.stream_idx = 0;
-               if (clip.pts_out != -1) {
-                       playlist_clips->add_clip(clip);
-                       playlist_selection_changed();
-                       ui->playlist->scrollToBottom();
-               }
+               playlist_clips->add_clip(clip);
+               playlist_selection_changed();
+               ui->playlist->scrollToBottom();
                return;
        }
 
@@ -363,15 +450,13 @@ void MainWindow::queue_clicked()
                clip.stream_idx = ui->preview_display->get_stream_idx();
        }
 
-       if (clip.pts_out != -1) {
-               playlist_clips->add_clip(clip);
-               playlist_selection_changed();
-               ui->playlist->scrollToBottom();
-               if (!ui->playlist->selectionModel()->hasSelection()) {
-                       // TODO: Figure out why this doesn't always seem to actually select the row.
-                       QModelIndex bottom = playlist_clips->index(playlist_clips->size() - 1, 0);
-                       ui->playlist->setCurrentIndex(bottom);
-               }
+       playlist_clips->add_clip(clip);
+       playlist_selection_changed();
+       ui->playlist->scrollToBottom();
+       if (!ui->playlist->selectionModel()->hasSelection()) {
+               // TODO: Figure out why this doesn't always seem to actually select the row.
+               QModelIndex bottom = playlist_clips->index(playlist_clips->size() - 1, 0);
+               ui->playlist->setCurrentIndex(bottom);
        }
 }
 
@@ -386,6 +471,8 @@ void MainWindow::preview_clicked()
                        QModelIndex index = selected->currentIndex();
                        const Clip &clip = *playlist_clips->clip(index.row());
                        preview_player->play(clip);
+                       preview_playing = true;
+                       enable_or_disable_preview_button();
                        return;
                }
        }
@@ -396,6 +483,8 @@ void MainWindow::preview_clicked()
        QItemSelectionModel *selected = ui->clip_list->selectionModel();
        if (!selected->hasSelection()) {
                preview_player->play(*cliplist_clips->back());
+               preview_playing = true;
+               enable_or_disable_preview_button();
                return;
        }
 
@@ -406,7 +495,12 @@ void MainWindow::preview_clicked()
        } else {
                clip.stream_idx = ui->preview_display->get_stream_idx();
        }
+       if (clip.pts_out == -1) {
+               clip.pts_out = clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
+       }
        preview_player->play(clip);
+       preview_playing = true;
+       enable_or_disable_preview_button();
 }
 
 void MainWindow::preview_angle_clicked(unsigned stream_idx)
@@ -539,10 +633,7 @@ void MainWindow::defer_timer_expired()
 void MainWindow::content_changed()
 {
        // If we are playing, update the part of the playlist that's not playing yet.
-       vector<ClipWithID> clips;
-       for (unsigned row = 0; row < playlist_clips->size(); ++row) {
-               clips.emplace_back(*playlist_clips->clip_with_id(row));
-       }
+       vector<ClipWithID> clips = get_playlist(0, playlist_clips->size());
        live_player->splice_play(clips);
 
        // Serialize the state.
@@ -585,33 +676,35 @@ void MainWindow::save_settings()
 {
        SettingsProto settings;
        settings.set_interpolation_quality(global_flags.interpolation_quality + 1);
-       settings.set_cue_point_padding_seconds(global_flags.cue_point_padding_seconds);
+       settings.set_cue_in_point_padding_seconds(global_flags.cue_in_point_padding_seconds);
+       settings.set_cue_out_point_padding_seconds(global_flags.cue_out_point_padding_seconds);
        db.store_settings(settings);
 }
 
-void MainWindow::play_clicked()
+void MainWindow::lock_blink_timer_expired()
 {
-       if (playlist_clips->empty())
-               return;
+       midi_mapper.set_locked(MIDIMapper::LightState(ui->speed_lock_btn->isChecked()));  // Presumably On, or the timer should have been canceled.
+}
 
+void MainWindow::play_clicked()
+{
        QItemSelectionModel *selected = ui->playlist->selectionModel();
-       unsigned start_row;
        if (!selected->hasSelection()) {
-               start_row = 0;
-       } else {
-               start_row = selected->selectedRows(0)[0].row();
+               return;
        }
+       unsigned start_row = selected->selectedRows(0)[0].row();
 
-       vector<ClipWithID> clips;
-       for (unsigned row = start_row; row < playlist_clips->size(); ++row) {
-               clips.emplace_back(*playlist_clips->clip_with_id(row));
-       }
+       vector<ClipWithID> clips = get_playlist(start_row, playlist_clips->size());
        live_player->play(clips);
        playlist_clips->set_progress({ { start_row, 0.0f } });
        ui->playlist->selectionModel()->clear();
+       ui->stop_btn->setEnabled(true);
        playlist_selection_changed();
+}
 
-       ui->stop_btn->setEnabled(true);
+void MainWindow::next_clicked()
+{
+       live_player->skip_to_next();
 }
 
 void MainWindow::stop_clicked()
@@ -622,16 +715,40 @@ void MainWindow::stop_clicked()
        playlist_clips->set_progress({});
        live_player->play(fake_clip);
        ui->stop_btn->setEnabled(false);
+       playlist_selection_changed();
+}
+
+void MainWindow::speed_slider_changed(int percent)
+{
+       float speed = percent / 100.0f;
+       ui->speed_lock_btn->setText(QString::fromStdString(" " + to_string(percent) + "%"));
+       live_player->set_master_speed(speed);
+       midi_mapper.set_speed_light(speed);
+}
+
+void MainWindow::speed_lock_clicked()
+{
+       // TODO: Make for a less abrupt transition if we're not already at 100%.
+       ui->speed_slider->setValue(100);  // Also actually sets the master speed and updates the label.
+       ui->speed_slider->setEnabled(!ui->speed_lock_btn->isChecked());
+       midi_mapper.set_locked(MIDIMapper::LightState(ui->speed_lock_btn->isChecked()));
+       lock_blink_timeout->stop();
+}
+
+void MainWindow::preview_player_done()
+{
+       preview_playing = false;
+       enable_or_disable_preview_button();
 }
 
 void MainWindow::live_player_done()
 {
-       playlist_selection_changed();
        playlist_clips->set_progress({});
        ui->stop_btn->setEnabled(false);
+       playlist_selection_changed();
 }
 
-void MainWindow::live_player_clip_progress(const map<uint64_t, double> &progress, double time_remaining)
+void MainWindow::live_player_clip_progress(const map<uint64_t, double> &progress, TimeRemaining time_remaining)
 {
        playlist_clips->set_progress(progress);
        set_output_status(format_duration(time_remaining) + " left");
@@ -660,6 +777,7 @@ bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 
        if (event->type() == QEvent::FocusIn || event->type() == QEvent::FocusOut) {
                enable_or_disable_preview_button();
+               playlist_selection_changed();
                hidden_jog_column = -1;
        }
 
@@ -728,6 +846,11 @@ bool MainWindow::eventFilter(QObject *watched, QEvent *event)
                if (mouse->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
                        scrub_sensitivity *= 10;
                        wheel_sensitivity *= 10;
+                       if (mouse->modifiers() & Qt::KeyboardModifier::ControlModifier) {
+                               // Ctrl+Shift is a super-modifier, meant only for things like “go back two hours”.
+                               scrub_sensitivity *= 100;
+                               wheel_sensitivity *= 100;
+                       }
                }
                if (mouse->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
                        scrub_sensitivity /= 10;
@@ -783,6 +906,11 @@ bool MainWindow::eventFilter(QObject *watched, QEvent *event)
                if (wheel->modifiers() & Qt::KeyboardModifier::ShiftModifier) {
                        scrub_sensitivity *= 10;
                        wheel_sensitivity *= 10;
+                       if (wheel->modifiers() & Qt::KeyboardModifier::ControlModifier) {
+                               // Ctrl+Shift is a super-modifier, meant only for things like “go back two hours”.
+                               scrub_sensitivity *= 100;
+                               wheel_sensitivity *= 100;
+                       }
                }
                if (wheel->modifiers() & Qt::KeyboardModifier::AltModifier) {  // Note: Shift + Alt cancel each other out.
                        scrub_sensitivity /= 10;
@@ -867,8 +995,27 @@ void MainWindow::playlist_selection_changed()
        ui->playlist_move_down_btn->setEnabled(
                any_selected && selected->selectedRows().back().row() < int(playlist_clips->size()) - 1);
 
-       ui->play_btn->setEnabled(!playlist_clips->empty());
-       midi_mapper.set_play_enabled(!playlist_clips->empty());
+       ui->play_btn->setEnabled(any_selected);
+       ui->next_btn->setEnabled(ui->stop_btn->isEnabled());  // TODO: Perhaps not if we're on the last clip?
+       midi_mapper.set_next_ready(ui->next_btn->isEnabled() ? MIDIMapper::On : MIDIMapper::Off);
+
+       // NOTE: The hidden button is still reachable by keyboard or MIDI.
+       if (any_selected) {
+               ui->play_btn->setVisible(true);
+       } else if (ui->stop_btn->isEnabled()) {  // Playing.
+               ui->play_btn->setVisible(false);
+       } else {
+               ui->play_btn->setVisible(true);
+       }
+       ui->next_btn->setVisible(!ui->play_btn->isVisible());
+
+       if (ui->stop_btn->isEnabled()) {  // Playing.
+               midi_mapper.set_play_enabled(MIDIMapper::On);
+       } else if (any_selected) {
+               midi_mapper.set_play_enabled(MIDIMapper::Blinking);
+       } else {
+               midi_mapper.set_play_enabled(MIDIMapper::Off);
+       }
 
        if (!any_selected) {
                set_output_status("paused");
@@ -877,7 +1024,7 @@ void MainWindow::playlist_selection_changed()
                for (size_t row = selected->selectedRows().front().row(); row < playlist_clips->size(); ++row) {
                        clips.emplace_back(*playlist_clips->clip_with_id(row));
                }
-               double remaining = compute_total_time(clips);
+               TimeRemaining remaining = compute_total_time(clips);
                set_output_status(format_duration(remaining) + " ready");
        }
 }
@@ -901,6 +1048,19 @@ void MainWindow::clip_list_selection_changed(const QModelIndex &current, const Q
        enable_or_disable_queue_button();
 }
 
+vector<ClipWithID> MainWindow::get_playlist(size_t start_row, size_t end_row)
+{
+       vector<ClipWithID> clips;
+       for (unsigned row = start_row; row < end_row; ++row) {
+               ClipWithID clip = *playlist_clips->clip_with_id(row);
+               if (clip.clip.pts_out == -1) {
+                       clip.clip.pts_out = clip.clip.pts_in + int64_t(TIMEBASE) * 86400 * 7;  // One week; effectively infinite, but without overflow issues.
+               }
+               clips.emplace_back(clip);
+       }
+       return clips;
+}
+
 void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_left)
 {
        char time_str[256];
@@ -934,6 +1094,11 @@ void MainWindow::report_disk_space(off_t free_bytes, double estimated_seconds_le
        });
 }
 
+void MainWindow::midi_mapping_triggered()
+{
+       MIDIMappingDialog(&midi_mapper).exec();
+}
+
 void MainWindow::exit_triggered()
 {
        close();
@@ -1072,15 +1237,30 @@ void MainWindow::quality_toggled(int quality, bool checked)
        save_settings();
 }
 
-void MainWindow::padding_toggled(double seconds, bool checked)
+void MainWindow::in_padding_toggled(double seconds, bool checked)
 {
        if (!checked) {
                return;
        }
-       global_flags.cue_point_padding_seconds = seconds;
+       global_flags.cue_in_point_padding_seconds = seconds;
        save_settings();
 }
 
+void MainWindow::out_padding_toggled(double seconds, bool checked)
+{
+       if (!checked) {
+               return;
+       }
+       global_flags.cue_out_point_padding_seconds = seconds;
+       save_settings();
+}
+
+void MainWindow::hide_camera_toggled(unsigned camera_idx, bool checked)
+{
+       displays[camera_idx].hidden = checked;
+       relayout_displays();
+}
+
 void MainWindow::highlight_camera_input(int stream_idx)
 {
        for (unsigned i = 0; i < num_cameras; ++i) {
@@ -1103,14 +1283,18 @@ void MainWindow::enable_or_disable_preview_button()
                QItemSelectionModel *selected = ui->playlist->selectionModel();
                if (selected->hasSelection()) {
                        ui->preview_btn->setEnabled(true);
-                       midi_mapper.set_preview_enabled(true);
+                       midi_mapper.set_preview_enabled(preview_playing ? MIDIMapper::On : MIDIMapper::Blinking);
                        return;
                }
        }
 
        // TODO: Perhaps only enable this if something is actually selected.
        ui->preview_btn->setEnabled(!cliplist_clips->empty());
-       midi_mapper.set_preview_enabled(!cliplist_clips->empty());
+       if (preview_playing) {
+               midi_mapper.set_preview_enabled(MIDIMapper::On);
+       } else {
+               midi_mapper.set_preview_enabled(cliplist_clips->empty() ? MIDIMapper::Off : MIDIMapper::Blinking);
+       }
 }
 
 void MainWindow::enable_or_disable_queue_button()
@@ -1123,15 +1307,7 @@ void MainWindow::enable_or_disable_queue_button()
        if (cliplist_clips->empty()) {
                enabled = false;
        } else {
-               QItemSelectionModel *selected = ui->clip_list->selectionModel();
-               if (!selected->hasSelection()) {
-                       Clip clip = *cliplist_clips->back();
-                       enabled = clip.pts_out != -1;
-               } else {
-                       QModelIndex index = selected->currentIndex();
-                       Clip clip = *cliplist_clips->clip(index.row());
-                       enabled = clip.pts_out != -1;
-               }
+               enabled = true;
        }
 
        ui->queue_btn->setEnabled(enabled);
@@ -1191,6 +1367,21 @@ void MainWindow::play()
        });
 }
 
+void MainWindow::next()
+{
+       post_to_main_thread([this] {
+               next_clicked();
+       });
+}
+
+void MainWindow::toggle_lock()
+{
+       post_to_main_thread([this] {
+               ui->speed_lock_btn->setChecked(!ui->speed_lock_btn->isChecked());
+               speed_lock_clicked();
+       });
+}
+
 void MainWindow::jog(int delta)
 {
        post_to_main_thread([this, delta] {
@@ -1225,6 +1416,28 @@ void MainWindow::switch_camera(unsigned camera_idx)
        });
 }
 
+void MainWindow::set_master_speed(float speed)
+{
+       speed = min(max(speed, 0.1f), 2.0f);
+
+       post_to_main_thread([this, speed] {
+               if (ui->speed_lock_btn->isChecked()) {
+                       midi_mapper.set_locked(MIDIMapper::Blinking);
+                       lock_blink_timeout->start(1000);
+                       return;
+               }
+
+               int percent = lrintf(speed * 100.0f);
+               ui->speed_slider->blockSignals(true);
+               ui->speed_slider->setValue(percent);
+               ui->speed_slider->blockSignals(false);
+               ui->speed_lock_btn->setText(QString::fromStdString(" " + to_string(percent) + "%"));
+
+               live_player->set_master_speed(speed);
+               midi_mapper.set_speed_light(speed);
+       });
+}
+
 void MainWindow::cue_in()
 {
        post_to_main_thread([this] { cue_in_clicked(); });