| /* |
| * 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.Movie; |
| 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; |
| |
| import static com.googlecode.mp4parser.util.CastUtils.l2i; |
| import static com.googlecode.mp4parser.util.Math.gcd; |
| import static com.googlecode.mp4parser.util.Math.lcm; |
| import static java.lang.Math.round; |
| |
| /** |
| * Changes the timescale of a track by wrapping the track. |
| */ |
| public class MultiplyTimeScaleTrack implements Track { |
| Track source; |
| private int timeScaleFactor; |
| |
| public MultiplyTimeScaleTrack(Track source, int timeScaleFactor) { |
| this.source = source; |
| this.timeScaleFactor = timeScaleFactor; |
| } |
| |
| public SampleDescriptionBox getSampleDescriptionBox() { |
| return source.getSampleDescriptionBox(); |
| } |
| |
| public List<TimeToSampleBox.Entry> getDecodingTimeEntries() { |
| return adjustTts(source.getDecodingTimeEntries(), timeScaleFactor); |
| } |
| |
| public List<CompositionTimeToSample.Entry> getCompositionTimeEntries() { |
| return adjustCtts(source.getCompositionTimeEntries(), timeScaleFactor); |
| } |
| |
| 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.timeScaleFactor); |
| 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(); |
| } |
| |
| |
| static List<CompositionTimeToSample.Entry> adjustCtts(List<CompositionTimeToSample.Entry> source, int timeScaleFactor) { |
| if (source != null) { |
| List<CompositionTimeToSample.Entry> entries2 = new ArrayList<CompositionTimeToSample.Entry>(source.size()); |
| for (CompositionTimeToSample.Entry entry : source) { |
| entries2.add(new CompositionTimeToSample.Entry(entry.getCount(), timeScaleFactor * entry.getOffset())); |
| } |
| return entries2; |
| } else { |
| return null; |
| } |
| } |
| |
| static List<TimeToSampleBox.Entry> adjustTts(List<TimeToSampleBox.Entry> source, int timeScaleFactor) { |
| LinkedList<TimeToSampleBox.Entry> entries2 = new LinkedList<TimeToSampleBox.Entry>(); |
| for (TimeToSampleBox.Entry e : source) { |
| entries2.add(new TimeToSampleBox.Entry(e.getCount(), timeScaleFactor * e.getDelta())); |
| } |
| return entries2; |
| } |
| |
| public Box getMediaHeaderBox() { |
| return source.getMediaHeaderBox(); |
| } |
| |
| public SubSampleInformationBox getSubsampleInformationBox() { |
| return source.getSubsampleInformationBox(); |
| } |
| |
| @Override |
| public String toString() { |
| return "MultiplyTimeScaleTrack{" + |
| "source=" + source + |
| '}'; |
| } |
| } |