- while (_reel != _reels.end() && t >= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->active_video_frame_rate ())) {
- t -= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->active_video_frame_rate ());
+ int const pre_roll_seconds = 2;
+
+ /* Pre-roll for subs */
+
+ ContentTime pre = t - ContentTime::from_seconds (pre_roll_seconds);
+ if (pre < ContentTime()) {
+ pre = ContentTime ();
+ }
+
+ /* Seek to pre-roll position */
+
+ while (
+ _reel != _reels.end() &&
+ pre >= ContentTime::from_frames ((*_reel)->main_picture()->actual_duration(), _dcp_content->active_video_frame_rate(film()))
+ ) {
+
+ ContentTime rd = ContentTime::from_frames ((*_reel)->main_picture()->actual_duration(), _dcp_content->active_video_frame_rate(film()));
+ pre -= rd;
+ t -= rd;
+ next_reel ();
+ }
+
+ /* Pass texts in the pre-roll */
+
+ double const vfr = _dcp_content->active_video_frame_rate (film());
+ for (int i = 0; i < pre_roll_seconds * vfr; ++i) {
+ pass_texts (pre, (*_reel)->main_picture()->asset()->size());
+ pre += ContentTime::from_frames (1, vfr);
+ }
+
+ /* Seek to correct position */
+
+ while (
+ _reel != _reels.end() &&
+ t >= ContentTime::from_frames ((*_reel)->main_picture()->actual_duration(), _dcp_content->active_video_frame_rate(film()))
+ ) {
+
+ t -= ContentTime::from_frames ((*_reel)->main_picture()->actual_duration(), _dcp_content->active_video_frame_rate(film()));