/**
* Gets all {@link Subtitle} of a track.
*
* @param trackNr Track number, starting from 1
* @return List of {@link Subtitle} found
*/
public List<Subtitle> getSubtitles(int trackNr) {
if (trackNr <= 0) {
return Collections.emptyList();
}
DvdTitle title = info.getTitle(trackNr - 1);
DvdTitleSet vts = title.getTitleSet();
List<Subtitle> result = new ArrayList<>();
Set<Integer> seen = new HashSet<>(); // make sure streams appear only once
int index = 1;
for (DvdSubtitle ds : vts.getSubs()) {
if (ds.getStream43Id() != null && !seen.contains(ds.getStream43Id())) {
result.add(
createSubtitle(
index++, ds.getStream43Id(), title.getVtsn(), ds, SubtitleFormat.STANDARD));
seen.add(ds.getStream43Id());
}
if (ds.getStreamWideId() != null && !seen.contains(ds.getStreamWideId())) {
result.add(
createSubtitle(
index++, ds.getStreamWideId(), title.getVtsn(), ds, SubtitleFormat.WIDE));
seen.add(ds.getStreamWideId());
}
if (ds.getStreamLetterboxId() != null && !seen.contains(ds.getStreamLetterboxId())) {
result.add(
createSubtitle(
index++, ds.getStreamLetterboxId(), title.getVtsn(), ds, SubtitleFormat.LETTERBOX));
seen.add(ds.getStreamLetterboxId());
}
if (ds.getStreamPanScanId() != null && !seen.contains(ds.getStreamPanScanId())) {
result.add(
createSubtitle(
index++, ds.getStreamPanScanId(), title.getVtsn(), ds, SubtitleFormat.PANSCAN));
seen.add(ds.getStreamPanScanId());
}
}
return result;
}
