public boolean isInPreview() { return source.isInPreview(); }
private TrackBox createTrackBox(Track track, Movie movie) { LOG.info("Creating Mp4TrackImpl " + track); TrackBox trackBox = new TrackBox(); TrackHeaderBox tkhd = new TrackHeaderBox(); tkhd.setVersion(1); int flags = 0; if (track.isEnabled()) { flags += 1; } if (track.isInMovie()) { flags += 2; } if (track.isInPreview()) { flags += 4; } if (track.isInPoster()) { flags += 8; } tkhd.setFlags(flags); tkhd.setAlternateGroup(track.getTrackMetaData().getGroup()); tkhd.setCreationTime(DateHelper.convert(track.getTrackMetaData().getCreationTime())); // We need to take edit list box into account in trackheader duration // but as long as I don't support edit list boxes it is sufficient to // just translate media duration to movie timescale tkhd.setDuration( getDuration(track) * getTimescale(movie) / track.getTrackMetaData().getTimescale()); tkhd.setHeight(track.getTrackMetaData().getHeight()); tkhd.setWidth(track.getTrackMetaData().getWidth()); tkhd.setLayer(track.getTrackMetaData().getLayer()); tkhd.setModificationTime(DateHelper.convert(new Date())); tkhd.setTrackId(track.getTrackMetaData().getTrackId()); tkhd.setVolume(track.getTrackMetaData().getVolume()); trackBox.addBox(tkhd); /* EditBox edit = new EditBox(); EditListBox editListBox = new EditListBox(); editListBox.setEntries(Collections.singletonList( new EditListBox.Entry(editListBox, (long) (track.getTrackMetaData().getStartTime() * getTimescale(movie)), -1, 1))); edit.addBox(editListBox); trackBox.addBox(edit); */ MediaBox mdia = new MediaBox(); trackBox.addBox(mdia); MediaHeaderBox mdhd = new MediaHeaderBox(); mdhd.setCreationTime(DateHelper.convert(track.getTrackMetaData().getCreationTime())); mdhd.setDuration(getDuration(track)); mdhd.setTimescale(track.getTrackMetaData().getTimescale()); mdhd.setLanguage(track.getTrackMetaData().getLanguage()); mdia.addBox(mdhd); HandlerBox hdlr = new HandlerBox(); mdia.addBox(hdlr); hdlr.setHandlerType(track.getHandler()); MediaInformationBox minf = new MediaInformationBox(); minf.addBox(track.getMediaHeaderBox()); // dinf: all these three boxes tell us is that the actual // data is in the current file and not somewhere external DataInformationBox dinf = new DataInformationBox(); DataReferenceBox dref = new DataReferenceBox(); dinf.addBox(dref); DataEntryUrlBox url = new DataEntryUrlBox(); url.setFlags(1); dref.addBox(url); minf.addBox(dinf); // SampleTableBox stbl = new SampleTableBox(); stbl.addBox(track.getSampleDescriptionBox()); List<TimeToSampleBox.Entry> decodingTimeToSampleEntries = track.getDecodingTimeEntries(); if (decodingTimeToSampleEntries != null && !track.getDecodingTimeEntries().isEmpty()) { TimeToSampleBox stts = new TimeToSampleBox(); stts.setEntries(track.getDecodingTimeEntries()); stbl.addBox(stts); } List<CompositionTimeToSample.Entry> compositionTimeToSampleEntries = track.getCompositionTimeEntries(); if (compositionTimeToSampleEntries != null && !compositionTimeToSampleEntries.isEmpty()) { CompositionTimeToSample ctts = new CompositionTimeToSample(); ctts.setEntries(compositionTimeToSampleEntries); stbl.addBox(ctts); } long[] syncSamples = track.getSyncSamples(); if (syncSamples != null && syncSamples.length > 0) { SyncSampleBox stss = new SyncSampleBox(); stss.setSampleNumber(syncSamples); stbl.addBox(stss); } if (track.getSampleDependencies() != null && !track.getSampleDependencies().isEmpty()) { SampleDependencyTypeBox sdtp = new SampleDependencyTypeBox(); sdtp.setEntries(track.getSampleDependencies()); stbl.addBox(sdtp); } HashMap<Track, int[]> track2ChunkSizes = new HashMap<Track, int[]>(); for (Track current : movie.getTracks()) { track2ChunkSizes.put(current, getChunkSizes(current, movie)); } int[] tracksChunkSizes = track2ChunkSizes.get(track); SampleToChunkBox stsc = new SampleToChunkBox(); stsc.setEntries(new LinkedList<SampleToChunkBox.Entry>()); long lastChunkSize = Integer.MIN_VALUE; // to be sure the first chunks hasn't got the same size for (int i = 0; i < tracksChunkSizes.length; i++) { // The sample description index references the sample description box // that describes the samples of this chunk. My Tracks cannot have more // than one sample description box. Therefore 1 is always right // the first chunk has the number '1' if (lastChunkSize != tracksChunkSizes[i]) { stsc.getEntries().add(new SampleToChunkBox.Entry(i + 1, tracksChunkSizes[i], 1)); lastChunkSize = tracksChunkSizes[i]; } } stbl.addBox(stsc); SampleSizeBox stsz = new SampleSizeBox(); stsz.setSampleSizes(track2SampleSizes.get(track)); stbl.addBox(stsz); // The ChunkOffsetBox we create here is just a stub // since we haven't created the whole structure we can't tell where the // first chunk starts (mdat box). So I just let the chunk offset // start at zero and I will add the mdat offset later. StaticChunkOffsetBox stco = new StaticChunkOffsetBox(); this.chunkOffsetBoxes.add(stco); long offset = 0; long[] chunkOffset = new long[tracksChunkSizes.length]; // all tracks have the same number of chunks if (LOG.isLoggable(Level.FINE)) { LOG.fine("Calculating chunk offsets for track_" + track.getTrackMetaData().getTrackId()); } for (int i = 0; i < tracksChunkSizes.length; i++) { // The filelayout will be: // chunk_1_track_1,... ,chunk_1_track_n, chunk_2_track_1,... ,chunk_2_track_n, ... , // chunk_m_track_1,... ,chunk_m_track_n // calculating the offsets if (LOG.isLoggable(Level.FINER)) { LOG.finer( "Calculating chunk offsets for track_" + track.getTrackMetaData().getTrackId() + " chunk " + i); } for (Track current : movie.getTracks()) { if (LOG.isLoggable(Level.FINEST)) { LOG.finest("Adding offsets of track_" + current.getTrackMetaData().getTrackId()); } int[] chunkSizes = track2ChunkSizes.get(current); long firstSampleOfChunk = 0; for (int j = 0; j < i; j++) { firstSampleOfChunk += chunkSizes[j]; } if (current == track) { chunkOffset[i] = offset; } for (int j = l2i(firstSampleOfChunk); j < firstSampleOfChunk + chunkSizes[i]; j++) { offset += track2SampleSizes.get(current)[j]; } } } stco.setChunkOffsets(chunkOffset); stbl.addBox(stco); minf.addBox(stbl); mdia.addBox(minf); return trackBox; }