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/*
* 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.AbstractTrack;
import com.googlecode.mp4parser.authoring.TrackMetaData;
import com.googlecode.mp4parser.boxes.adobe.ActionMessageFormat0SampleEntryBox;
import java.nio.ByteBuffer;
import java.util.Collections;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
public class Amf0Track extends AbstractTrack {
SortedMap<Long, byte[]> rawSamples = new TreeMap<Long, byte[]>() {
};
private TrackMetaData trackMetaData = new TrackMetaData();
/**
* Creates a new AMF0 track from
*
* @param rawSamples
*/
public Amf0Track(Map<Long, byte[]> rawSamples) {
this.rawSamples = new TreeMap<Long, byte[]>(rawSamples);
trackMetaData.setCreationTime(new Date());
trackMetaData.setModificationTime(new Date());
trackMetaData.setTimescale(1000); // Text tracks use millieseconds
trackMetaData.setLanguage("eng");
}
public List<ByteBuffer> getSamples() {
LinkedList<ByteBuffer> samples = new LinkedList<ByteBuffer>();
for (byte[] bytes : rawSamples.values()) {
samples.add(ByteBuffer.wrap(bytes));
}
return samples;
}
public SampleDescriptionBox getSampleDescriptionBox() {
SampleDescriptionBox stsd = new SampleDescriptionBox();
ActionMessageFormat0SampleEntryBox amf0 = new ActionMessageFormat0SampleEntryBox();
amf0.setDataReferenceIndex(1);
stsd.addBox(amf0);
return stsd;
}
public List<TimeToSampleBox.Entry> getDecodingTimeEntries() {
LinkedList<TimeToSampleBox.Entry> timesToSample = new LinkedList<TimeToSampleBox.Entry>();
LinkedList<Long> keys = new LinkedList<Long>(rawSamples.keySet());
Collections.sort(keys);
long lastTimeStamp = 0;
for (Long key : keys) {
long delta = key - lastTimeStamp;
if (timesToSample.size() > 0 && timesToSample.peek().getDelta() == delta) {
timesToSample.peek().setCount(timesToSample.peek().getCount() + 1);
} else {
timesToSample.add(new TimeToSampleBox.Entry(1, delta));
}
lastTimeStamp = key;
}
return timesToSample;
}
public List<CompositionTimeToSample.Entry> getCompositionTimeEntries() {
// AMF0 tracks do not have Composition Time
return null;
}
public long[] getSyncSamples() {
// AMF0 tracks do not have Sync Samples
return null;
}
public List<SampleDependencyTypeBox.Entry> getSampleDependencies() {
// AMF0 tracks do not have Sample Dependencies
return null;
}
public TrackMetaData getTrackMetaData() {
return trackMetaData; //To change body of implemented methods use File | Settings | File Templates.
}
public String getHandler() {
return "data";
}
public Box getMediaHeaderBox() {
return new NullMediaHeaderBox();
}
public SubSampleInformationBox getSubsampleInformationBox() {
return null;
}
}
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