#include <string>
#include <vector>
+#include <QMouseEvent>
+#include <QWheelEvent>
#include <QShortcut>
using namespace std;
MainWindow *global_mainwindow = nullptr;
-extern int64_t current_pts;
ClipList *cliplist_clips;
PlayList *playlist_clips;
+extern int64_t current_pts;
+extern mutex frame_mu;
+extern vector<int64_t> frames[MAX_STREAMS];
+
MainWindow::MainWindow()
: ui(new Ui::MainWindow)
{
cliplist_clips = new ClipList();
ui->clip_list->setModel(cliplist_clips);
+ // For scrubbing in the pts columns.
+ ui->clip_list->viewport()->installEventFilter(this);
+
playlist_clips = new PlayList();
ui->playlist->setModel(playlist_clips);
{
ui->live_display->setMinimumHeight(ui->live_display->width() * 9 / 16);
}
+
+bool MainWindow::eventFilter(QObject *watched, QEvent *event)
+{
+ constexpr int dead_zone_pixels = 3; // To avoid that simple clicks get misinterpreted.
+ constexpr int scrub_sensitivity = 100; // pts units per pixel.
+ constexpr int wheel_sensitivity = 100; // pts units per degree.
+
+ if (event->type() == QEvent::MouseButtonPress) {
+ QMouseEvent *mouse = (QMouseEvent *)event;
+
+ int column = ui->clip_list->columnAt(mouse->x());
+ int row = ui->clip_list->rowAt(mouse->y());
+ if (column == -1 || row == -1) return false;
+
+ if (ClipList::Column(column) == ClipList::Column::IN) {
+ scrubbing = true;
+ scrub_row = row;
+ scrub_column = ClipList::Column::IN;
+ scrub_x_origin = mouse->x();
+ scrub_pts_origin = cliplist_clips->clip(scrub_row)->pts_in;
+
+ unsigned stream_idx = ui->preview_display->get_stream_idx();
+ preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
+ } else if (ClipList::Column(column) == ClipList::Column::OUT) {
+ scrubbing = true;
+ scrub_row = row;
+ scrub_column = ClipList::Column::OUT;
+ scrub_x_origin = mouse->x();
+ scrub_pts_origin = cliplist_clips->clip(scrub_row)->pts_out;
+
+ unsigned stream_idx = ui->preview_display->get_stream_idx();
+ preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
+ }
+ } else if (event->type() == QEvent::MouseMove) {
+ if (scrubbing) {
+ QMouseEvent *mouse = (QMouseEvent *)event;
+ int offset = mouse->x() - scrub_x_origin;
+ int adjusted_offset;
+ if (offset >= dead_zone_pixels) {
+ adjusted_offset = offset - dead_zone_pixels;
+ } else if (offset < -dead_zone_pixels) {
+ adjusted_offset = offset + dead_zone_pixels;
+ } else {
+ adjusted_offset = 0;
+ }
+
+ unsigned stream_idx = ui->preview_display->get_stream_idx();
+ int64_t pts = scrub_pts_origin + adjusted_offset * scrub_sensitivity;
+
+ if (scrub_column == ClipList::Column::IN) {
+ pts = std::max<int64_t>(pts, 0);
+ pts = std::min(pts, cliplist_clips->clip(scrub_row)->pts_out);
+ cliplist_clips->clip(scrub_row)->pts_in = pts;
+ preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
+ } else {
+ pts = std::max(pts, cliplist_clips->clip(scrub_row)->pts_in);
+ pts = std::min(pts, current_pts);
+ cliplist_clips->clip(scrub_row)->pts_out = pts;
+ preview_single_frame(pts, stream_idx, LAST_BEFORE);
+ }
+
+ return true; // Don't use this mouse movement for selecting things.
+ }
+ } else if (event->type() == QEvent::Wheel) {
+ QWheelEvent *wheel = (QWheelEvent *)event;
+
+ int column = ui->clip_list->columnAt(wheel->x());
+ int row = ui->clip_list->rowAt(wheel->y());
+ if (column == -1 || row == -1) return false;
+
+ ClipProxy clip = cliplist_clips->clip(scrub_row);
+ unsigned stream_idx = ui->preview_display->get_stream_idx();
+
+ if (ClipList::Column(column) == ClipList::Column::IN) {
+ int64_t pts = clip->pts_in + wheel->angleDelta().y() * wheel_sensitivity;
+ pts = std::max<int64_t>(pts, 0);
+ pts = std::min(pts, clip->pts_out);
+ clip->pts_in = pts;
+ preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
+ } else if (ClipList::Column(column) == ClipList::Column::OUT) {
+ int64_t pts = clip->pts_out + wheel->angleDelta().y() * wheel_sensitivity;
+ pts = std::max(pts, clip->pts_in);
+ pts = std::min(pts, current_pts);
+ clip->pts_out = pts;
+ preview_single_frame(pts, stream_idx, LAST_BEFORE);
+ }
+ } else if (event->type() == QEvent::MouseButtonRelease) {
+ scrubbing = false;
+ }
+ return false;
+}
+
+void MainWindow::preview_single_frame(int64_t pts, unsigned stream_idx, MainWindow::Rounding rounding)
+{
+ if (rounding == LAST_BEFORE) {
+ lock_guard<mutex> lock(frame_mu);
+ if (frames[stream_idx].empty()) return;
+ auto it = lower_bound(frames[stream_idx].begin(), frames[stream_idx].end(), pts);
+ if (it != frames[stream_idx].end()) {
+ pts = *it;
+ }
+ } else {
+ assert(rounding == FIRST_AT_OR_AFTER);
+ lock_guard<mutex> lock(frame_mu);
+ if (frames[stream_idx].empty()) return;
+ auto it = upper_bound(frames[stream_idx].begin(), frames[stream_idx].end(), pts - 1);
+ if (it != frames[stream_idx].end()) {
+ pts = *it;
+ }
+ }
+
+ Clip fake_clip;
+ fake_clip.pts_in = pts;
+ fake_clip.pts_out = pts + 1;
+ preview_player->play_clip(fake_clip, stream_idx);
+}