/** Creates a 'sidx' box */
protected Box createSidx(
Track track,
long earliestPresentationTime,
long firstOffset,
int referencedSize,
long subSegmentDuration,
byte sap,
int sapDelta) {
SegmentIndexBox sidx = new SegmentIndexBox();
sidx.setEarliestPresentationTime(earliestPresentationTime);
sidx.setFirstOffset(firstOffset);
sidx.setReferenceId(track.getTrackMetaData().getTrackId());
sidx.setTimeScale(track.getTrackMetaData().getTimescale());
sidx.setFlags(0);
sidx.setReserved(0);
SegmentIndexBox.Entry sidxentry =
createSidxEntry(referencedSize, subSegmentDuration, sap, sapDelta);
ArrayList<SegmentIndexBox.Entry> sidxEntries = new ArrayList<SegmentIndexBox.Entry>();
sidxEntries.add(sidxentry);
sidx.setEntries(sidxEntries);
return sidx;
}
@Override
protected List<Box> createMoofMdat(Movie movie) {
List<Box> moofsMdats = new LinkedList<Box>();
HashMap<Track, long[]> intersectionMap = new HashMap<Track, long[]>();
int maxNumberOfFragments = 0;
for (Track track : movie.getTracks()) {
long[] intersects = intersectionFinder.sampleNumbers(track);
intersectionMap.put(track, intersects);
maxNumberOfFragments = Math.max(maxNumberOfFragments, intersects.length);
}
int sequence = 1;
// this loop has two indices:
for (int cycle = 0; cycle < maxNumberOfFragments; cycle++) {
final List<Track> sortedTracks =
sortTracksInSequence(movie.getTracks(), cycle, intersectionMap);
for (Track track : sortedTracks) {
if (getAllowedHandlers().isEmpty() || getAllowedHandlers().contains(track.getHandler())) {
long[] startSamples = intersectionMap.get(track);
sequence = createFragment(moofsMdats, track, startSamples, cycle, sequence);
}
}
}
List<SegmentIndexBox> sidx_boxes = new LinkedList<SegmentIndexBox>();
int inserter = 0;
List<Box> newboxes = new ArrayList<Box>();
int counter = 0;
SegmentIndexBox sidx = new SegmentIndexBox();
for (int i = 0; i < moofsMdats.size(); i++) {
if (moofsMdats.get(i).getType().equals("sidx")) {
sidx_boxes.add((SegmentIndexBox) moofsMdats.get(i));
counter++;
if (counter == 1) {
inserter = i;
}
} else {
newboxes.add(moofsMdats.get(i));
}
}
long earliestPresentationTime = sidx_boxes.get(0).getEarliestPresentationTime();
if (earliestPresentationTime < 0) {
System.err.println(
"negative earlist_presentation_time in sidx. Setting to 0. May cause sync issues");
earliestPresentationTime = 0;
}
sidx.setEarliestPresentationTime(earliestPresentationTime);
sidx.setFirstOffset(sidx_boxes.get(0).getFirstOffset());
sidx.setReferenceId(sidx_boxes.get(0).getReferenceId());
sidx.setTimeScale(sidx_boxes.get(0).getTimeScale());
sidx.setFlags(sidx_boxes.get(0).getFlags());
List<SegmentIndexBox.Entry> sidxbox_entries = new ArrayList<SegmentIndexBox.Entry>();
for (SegmentIndexBox sidxbox : sidx_boxes) {
List<SegmentIndexBox.Entry> entryfrag = sidxbox.getEntries();
for (SegmentIndexBox.Entry entry : entryfrag) {
sidxbox_entries.add(entry);
}
}
sidx.setEntries(sidxbox_entries);
newboxes.add(inserter, sidx);
return newboxes;
}