| /* |
| * Copyright 2012 Sebastian Annies, Hamburg |
| * |
| * Licensed under the Apache License, Version 2.0 (the License); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an AS IS BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.googlecode.mp4parser.authoring.tracks; |
| |
| import com.coremedia.iso.boxes.*; |
| import com.googlecode.mp4parser.authoring.Track; |
| import com.googlecode.mp4parser.authoring.TrackMetaData; |
| |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| /** |
| * Changes the timescale of a track by wrapping the track. |
| */ |
| public class DivideTimeScaleTrack implements Track { |
| Track source; |
| private int timeScaleDivisor; |
| |
| public DivideTimeScaleTrack(Track source, int timeScaleDivisor) { |
| this.source = source; |
| this.timeScaleDivisor = timeScaleDivisor; |
| } |
| |
| public SampleDescriptionBox getSampleDescriptionBox() { |
| return source.getSampleDescriptionBox(); |
| } |
| |
| public List<TimeToSampleBox.Entry> getDecodingTimeEntries() { |
| return adjustTts(); |
| } |
| |
| public List<CompositionTimeToSample.Entry> getCompositionTimeEntries() { |
| return adjustCtts(); |
| } |
| |
| public long[] getSyncSamples() { |
| return source.getSyncSamples(); |
| } |
| |
| public List<SampleDependencyTypeBox.Entry> getSampleDependencies() { |
| return source.getSampleDependencies(); |
| } |
| |
| public TrackMetaData getTrackMetaData() { |
| TrackMetaData trackMetaData = (TrackMetaData) source.getTrackMetaData().clone(); |
| trackMetaData.setTimescale(source.getTrackMetaData().getTimescale() / this.timeScaleDivisor); |
| return trackMetaData; |
| } |
| |
| public String getHandler() { |
| return source.getHandler(); |
| } |
| |
| public boolean isEnabled() { |
| return source.isEnabled(); |
| } |
| |
| public boolean isInMovie() { |
| return source.isInMovie(); |
| } |
| |
| public boolean isInPreview() { |
| return source.isInPreview(); |
| } |
| |
| public boolean isInPoster() { |
| return source.isInPoster(); |
| } |
| |
| public List<ByteBuffer> getSamples() { |
| return source.getSamples(); |
| } |
| |
| |
| List<CompositionTimeToSample.Entry> adjustCtts() { |
| List<CompositionTimeToSample.Entry> origCtts = this.source.getCompositionTimeEntries(); |
| if (origCtts != null) { |
| List<CompositionTimeToSample.Entry> entries2 = new ArrayList<CompositionTimeToSample.Entry>(origCtts.size()); |
| for (CompositionTimeToSample.Entry entry : origCtts) { |
| entries2.add(new CompositionTimeToSample.Entry(entry.getCount(), entry.getOffset() / timeScaleDivisor)); |
| } |
| return entries2; |
| } else { |
| return null; |
| } |
| } |
| |
| List<TimeToSampleBox.Entry> adjustTts() { |
| List<TimeToSampleBox.Entry> origTts = source.getDecodingTimeEntries(); |
| LinkedList<TimeToSampleBox.Entry> entries2 = new LinkedList<TimeToSampleBox.Entry>(); |
| for (TimeToSampleBox.Entry e : origTts) { |
| entries2.add(new TimeToSampleBox.Entry(e.getCount(), e.getDelta() / timeScaleDivisor)); |
| } |
| return entries2; |
| } |
| |
| public Box getMediaHeaderBox() { |
| return source.getMediaHeaderBox(); |
| } |
| |
| public SubSampleInformationBox getSubsampleInformationBox() { |
| return source.getSubsampleInformationBox(); |
| } |
| |
| @Override |
| public String toString() { |
| return "MultiplyTimeScaleTrack{" + |
| "source=" + source + |
| '}'; |
| } |
| } |