org.mp4parser.boxes.iso14496.part12.TrackFragmentRandomAccessBox Maven / Gradle / Ivy
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A generic parser and writer for all ISO 14496 based files (MP4, Quicktime, DCF, PDCF, ...)
/*
* Copyright 2009 castLabs GmbH, Berlin
*
* 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 org.mp4parser.boxes.iso14496.part12;
import org.mp4parser.support.AbstractFullBox;
import org.mp4parser.tools.IsoTypeReader;
import org.mp4parser.tools.IsoTypeReaderVariable;
import org.mp4parser.tools.IsoTypeWriter;
import org.mp4parser.tools.IsoTypeWriterVariable;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* Each entry contains the location and the presentation time of the random accessible sample.
* It indicates that the sample in the entry can be randomaccessed. Note that not every random
* accessible sample in the track needs to be listed in the table.
*
* @see MovieFragmentRandomAccessBox
*/
public class TrackFragmentRandomAccessBox extends AbstractFullBox {
public static final String TYPE = "tfra";
private long trackId;
private int reserved;
private int lengthSizeOfTrafNum = 2;
private int lengthSizeOfTrunNum = 2;
private int lengthSizeOfSampleNum = 2;
private List entries = Collections.emptyList();
public TrackFragmentRandomAccessBox() {
super(TYPE);
}
protected long getContentSize() {
long contentSize = 4;
contentSize += 4 + 4 /*26 + 2 + 2 + 2 */ + 4;
if (getVersion() == 1) {
contentSize += (8 + 8) * entries.size();
} else {
contentSize += (4 + 4) * entries.size();
}
contentSize += lengthSizeOfTrafNum * entries.size();
contentSize += lengthSizeOfTrunNum * entries.size();
contentSize += lengthSizeOfSampleNum * entries.size();
return contentSize;
}
@Override
public void _parseDetails(ByteBuffer content) {
parseVersionAndFlags(content);
trackId = IsoTypeReader.readUInt32(content);
long temp = IsoTypeReader.readUInt32(content);
reserved = (int) (temp >> 6);
lengthSizeOfTrafNum = ((int) (temp & 0x3F) >> 4) + 1;
lengthSizeOfTrunNum = ((int) (temp & 0xC) >> 2) + 1;
lengthSizeOfSampleNum = ((int) (temp & 0x3)) + 1;
long numberOfEntries = IsoTypeReader.readUInt32(content);
entries = new ArrayList();
for (int i = 0; i < numberOfEntries; i++) {
Entry entry = new Entry();
if (getVersion() == 1) {
entry.time = IsoTypeReader.readUInt64(content);
entry.moofOffset = IsoTypeReader.readUInt64(content);
} else {
entry.time = IsoTypeReader.readUInt32(content);
entry.moofOffset = IsoTypeReader.readUInt32(content);
}
entry.trafNumber = IsoTypeReaderVariable.read(content, lengthSizeOfTrafNum);
entry.trunNumber = IsoTypeReaderVariable.read(content, lengthSizeOfTrunNum);
entry.sampleNumber = IsoTypeReaderVariable.read(content, lengthSizeOfSampleNum);
entries.add(entry);
}
}
@Override
protected void getContent(ByteBuffer byteBuffer) {
writeVersionAndFlags(byteBuffer);
IsoTypeWriter.writeUInt32(byteBuffer, trackId);
long temp;
temp = reserved << 6;
temp = temp | (((lengthSizeOfTrafNum - 1) & 0x3) << 4);
temp = temp | (((lengthSizeOfTrunNum - 1) & 0x3) << 2);
temp = temp | ((lengthSizeOfSampleNum - 1) & 0x3);
IsoTypeWriter.writeUInt32(byteBuffer, temp);
IsoTypeWriter.writeUInt32(byteBuffer, entries.size());
for (Entry entry : entries) {
if (getVersion() == 1) {
IsoTypeWriter.writeUInt64(byteBuffer, entry.time);
IsoTypeWriter.writeUInt64(byteBuffer, entry.moofOffset);
} else {
IsoTypeWriter.writeUInt32(byteBuffer, entry.time);
IsoTypeWriter.writeUInt32(byteBuffer, entry.moofOffset);
}
IsoTypeWriterVariable.write(entry.trafNumber, byteBuffer, lengthSizeOfTrafNum);
IsoTypeWriterVariable.write(entry.trunNumber, byteBuffer, lengthSizeOfTrunNum);
IsoTypeWriterVariable.write(entry.sampleNumber, byteBuffer, lengthSizeOfSampleNum);
}
}
public long getTrackId() {
return trackId;
}
public void setTrackId(long trackId) {
this.trackId = trackId;
}
public int getReserved() {
return reserved;
}
public int getLengthSizeOfTrafNum() {
return lengthSizeOfTrafNum;
}
public void setLengthSizeOfTrafNum(int lengthSizeOfTrafNum) {
this.lengthSizeOfTrafNum = lengthSizeOfTrafNum;
}
public int getLengthSizeOfTrunNum() {
return lengthSizeOfTrunNum;
}
public void setLengthSizeOfTrunNum(int lengthSizeOfTrunNum) {
this.lengthSizeOfTrunNum = lengthSizeOfTrunNum;
}
public int getLengthSizeOfSampleNum() {
return lengthSizeOfSampleNum;
}
public void setLengthSizeOfSampleNum(int lengthSizeOfSampleNum) {
this.lengthSizeOfSampleNum = lengthSizeOfSampleNum;
}
public long getNumberOfEntries() {
return entries.size();
}
public List getEntries() {
return Collections.unmodifiableList(entries);
}
public void setEntries(List entries) {
this.entries = entries;
}
@Override
public String toString() {
return "TrackFragmentRandomAccessBox{" +
"trackId=" + trackId +
", entries=" + entries +
'}';
}
public static class Entry {
private long time;
private long moofOffset;
private long trafNumber;
private long trunNumber;
private long sampleNumber;
public Entry() {
}
public Entry(long time, long moofOffset, long trafNumber, long trunNumber, long sampleNumber) {
this.moofOffset = moofOffset;
this.sampleNumber = sampleNumber;
this.time = time;
this.trafNumber = trafNumber;
this.trunNumber = trunNumber;
}
public long getTime() {
return time;
}
public void setTime(long time) {
this.time = time;
}
public long getMoofOffset() {
return moofOffset;
}
public void setMoofOffset(long moofOffset) {
this.moofOffset = moofOffset;
}
public long getTrafNumber() {
return trafNumber;
}
public void setTrafNumber(long trafNumber) {
this.trafNumber = trafNumber;
}
public long getTrunNumber() {
return trunNumber;
}
public void setTrunNumber(long trunNumber) {
this.trunNumber = trunNumber;
}
public long getSampleNumber() {
return sampleNumber;
}
public void setSampleNumber(long sampleNumber) {
this.sampleNumber = sampleNumber;
}
@Override
public String toString() {
return "Entry{" +
"time=" + time +
", moofOffset=" + moofOffset +
", trafNumber=" + trafNumber +
", trunNumber=" + trunNumber +
", sampleNumber=" + sampleNumber +
'}';
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Entry entry = (Entry) o;
if (moofOffset != entry.moofOffset) return false;
if (sampleNumber != entry.sampleNumber) return false;
if (time != entry.time) return false;
if (trafNumber != entry.trafNumber) return false;
if (trunNumber != entry.trunNumber) return false;
return true;
}
@Override
public int hashCode() {
int result = (int) (time ^ (time >>> 32));
result = 31 * result + (int) (moofOffset ^ (moofOffset >>> 32));
result = 31 * result + (int) (trafNumber ^ (trafNumber >>> 32));
result = 31 * result + (int) (trunNumber ^ (trunNumber >>> 32));
result = 31 * result + (int) (sampleNumber ^ (sampleNumber >>> 32));
return result;
}
}
}