org.mp4parser.boxes.iso14496.part12.TrackRunBox Maven / Gradle / Ivy
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A generic parser and writer for all ISO 14496 based files (MP4, Quicktime, DCF, PDCF, ...)
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/*
* 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.CastUtils;
import org.mp4parser.tools.IsoTypeReader;
import org.mp4parser.tools.IsoTypeWriter;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
/**
* 4cc = "{@value #TYPE}"
* aligned(8) class TrackRunBox
* extends FullBox('trun', version, tr_flags) {
* unsigned int(32) sample_count;
* // the following are optional fields
* signed int(32) data_offset;
* unsigned int(32) first_sample_flags;
* // all fields in the following array are optional
* {
* unsigned int(32) sample_duration;
* unsigned int(32) sample_size;
* unsigned int(32) sample_flags
* if (version == 0)
* { unsigned int(32) sample_composition_time_offset; }
* else
* { signed int(32) sample_composition_time_offset; }
* }[ sample_count ]
* }
*/
public class TrackRunBox extends AbstractFullBox {
public static final String TYPE = "trun";
private int dataOffset;
private SampleFlags firstSampleFlags;
private List entries = new ArrayList();
public TrackRunBox() {
super(TYPE);
}
public List getEntries() {
return entries;
}
public void setEntries(List entries) {
this.entries = entries;
}
public long[] getSampleCompositionTimeOffsets() {
if (isSampleCompositionTimeOffsetPresent()) {
long[] result = new long[entries.size()];
for (int i = 0; i < result.length; i++) {
result[i] = entries.get(i).getSampleCompositionTimeOffset();
}
return result;
}
return null;
}
protected long getContentSize() {
long size = 8;
int flags = getFlags();
if ((flags & 0x1) == 0x1) { //dataOffsetPresent
size += 4;
}
if ((flags & 0x4) == 0x4) { //firstSampleFlagsPresent
size += 4;
}
long entrySize = 0;
if ((flags & 0x100) == 0x100) { //sampleDurationPresent
entrySize += 4;
}
if ((flags & 0x200) == 0x200) { //sampleSizePresent
entrySize += 4;
}
if ((flags & 0x400) == 0x400) { //sampleFlagsPresent
entrySize += 4;
}
if ((flags & 0x800) == 0x800) { //sampleCompositionTimeOffsetPresent
entrySize += 4;
}
size += entrySize * entries.size();
return size;
}
protected void getContent(ByteBuffer byteBuffer) {
writeVersionAndFlags(byteBuffer);
IsoTypeWriter.writeUInt32(byteBuffer, entries.size());
int flags = getFlags();
if ((flags & 0x1) == 1) { //dataOffsetPresent
IsoTypeWriter.writeUInt32(byteBuffer, dataOffset);
}
if ((flags & 0x4) == 0x4) { //firstSampleFlagsPresent
firstSampleFlags.getContent(byteBuffer);
}
for (Entry entry : entries) {
if ((flags & 0x100) == 0x100) { //sampleDurationPresent
IsoTypeWriter.writeUInt32(byteBuffer, entry.sampleDuration);
}
if ((flags & 0x200) == 0x200) { //sampleSizePresent
IsoTypeWriter.writeUInt32(byteBuffer, entry.sampleSize);
}
if ((flags & 0x400) == 0x400) { //sampleFlagsPresent
entry.sampleFlags.getContent(byteBuffer);
}
if ((flags & 0x800) == 0x800) { //sampleCompositionTimeOffsetPresent
if (getVersion() == 0) {
IsoTypeWriter.writeUInt32(byteBuffer, entry.sampleCompositionTimeOffset);
} else {
byteBuffer.putInt((int) entry.sampleCompositionTimeOffset);
}
}
}
}
@Override
public void _parseDetails(ByteBuffer content) {
parseVersionAndFlags(content);
long sampleCount = IsoTypeReader.readUInt32(content);
if ((getFlags() & 0x1) == 1) { //dataOffsetPresent
dataOffset = CastUtils.l2i(IsoTypeReader.readUInt32(content));
} else {
dataOffset = -1;
}
if ((getFlags() & 0x4) == 0x4) { //firstSampleFlagsPresent
firstSampleFlags = new SampleFlags(content);
}
for (int i = 0; i < sampleCount; i++) {
Entry entry = new Entry();
if ((getFlags() & 0x100) == 0x100) { //sampleDurationPresent
entry.sampleDuration = IsoTypeReader.readUInt32(content);
}
if ((getFlags() & 0x200) == 0x200) { //sampleSizePresent
entry.sampleSize = IsoTypeReader.readUInt32(content);
}
if ((getFlags() & 0x400) == 0x400) { //sampleFlagsPresent
entry.sampleFlags = new SampleFlags(content);
}
if ((getFlags() & 0x800) == 0x800) { //sampleCompositionTimeOffsetPresent
entry.sampleCompositionTimeOffset = content.getInt();
}
entries.add(entry);
}
}
public long getSampleCount() {
return entries.size();
}
public boolean isDataOffsetPresent() {
return (getFlags() & 0x1) == 1;
}
public void setDataOffsetPresent(boolean v) {
if (v) {
setFlags(getFlags() | 0x01);
} else {
setFlags(getFlags() & (0xFFFFFF ^ 0x1));
}
}
public boolean isFirstSampleFlagsPresent() {
return (getFlags() & 0x4) == 0x4;
}
public boolean isSampleSizePresent() {
return (getFlags() & 0x200) == 0x200;
}
public void setSampleSizePresent(boolean v) {
if (v) {
setFlags(getFlags() | 0x200);
} else {
setFlags(getFlags() & (0xFFFFFF ^ 0x200));
}
}
public boolean isSampleDurationPresent() {
return (getFlags() & 0x100) == 0x100;
}
public void setSampleDurationPresent(boolean v) {
if (v) {
setFlags(getFlags() | 0x100);
} else {
setFlags(getFlags() & (0xFFFFFF ^ 0x100));
}
}
public boolean isSampleFlagsPresent() {
return (getFlags() & 0x400) == 0x400;
}
public void setSampleFlagsPresent(boolean v) {
if (v) {
setFlags(getFlags() | 0x400);
} else {
setFlags(getFlags() & (0xFFFFFF ^ 0x400));
}
}
public boolean isSampleCompositionTimeOffsetPresent() {
return (getFlags() & 0x800) == 0x800;
}
public void setSampleCompositionTimeOffsetPresent(boolean v) {
if (v) {
setFlags(getFlags() | 0x800);
} else {
setFlags(getFlags() & (0xFFFFFF ^ 0x800));
}
}
public int getDataOffset() {
return dataOffset;
}
public void setDataOffset(int dataOffset) {
if (dataOffset == -1) {
setFlags(getFlags() & (0xFFFFFF ^ 1));
} else {
setFlags(getFlags() | 0x1); // turn on dataoffset
}
this.dataOffset = dataOffset;
}
public SampleFlags getFirstSampleFlags() {
return firstSampleFlags;
}
public void setFirstSampleFlags(SampleFlags firstSampleFlags) {
if (firstSampleFlags == null) {
setFlags(getFlags() & (0xFFFFFF ^ 0x4));
} else {
setFlags(getFlags() | 0x4);
}
this.firstSampleFlags = firstSampleFlags;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append("TrackRunBox");
sb.append("{sampleCount=").append(entries.size());
sb.append(", dataOffset=").append(dataOffset);
sb.append(", dataOffsetPresent=").append(isDataOffsetPresent());
sb.append(", sampleSizePresent=").append(isSampleSizePresent());
sb.append(", sampleDurationPresent=").append(isSampleDurationPresent());
sb.append(", sampleFlagsPresentPresent=").append(isSampleFlagsPresent());
sb.append(", sampleCompositionTimeOffsetPresent=").append(isSampleCompositionTimeOffsetPresent());
sb.append(", firstSampleFlags=").append(firstSampleFlags);
sb.append('}');
return sb.toString();
}
public static class Entry {
private long sampleDuration;
private long sampleSize;
private SampleFlags sampleFlags;
private long sampleCompositionTimeOffset;
public Entry() {
}
public Entry(long sampleDuration, long sampleSize, SampleFlags sampleFlags, int sampleCompositionTimeOffset) {
this.sampleDuration = sampleDuration;
this.sampleSize = sampleSize;
this.sampleFlags = sampleFlags;
this.sampleCompositionTimeOffset = sampleCompositionTimeOffset;
}
public long getSampleDuration() {
return sampleDuration;
}
public void setSampleDuration(long sampleDuration) {
this.sampleDuration = sampleDuration;
}
public long getSampleSize() {
return sampleSize;
}
public void setSampleSize(long sampleSize) {
this.sampleSize = sampleSize;
}
public SampleFlags getSampleFlags() {
return sampleFlags;
}
public void setSampleFlags(SampleFlags sampleFlags) {
this.sampleFlags = sampleFlags;
}
public long getSampleCompositionTimeOffset() {
return sampleCompositionTimeOffset;
}
public void setSampleCompositionTimeOffset(int sampleCompositionTimeOffset) {
this.sampleCompositionTimeOffset = sampleCompositionTimeOffset;
}
@Override
public String toString() {
return "Entry{" +
"duration=" + sampleDuration +
", size=" + sampleSize +
", dlags=" + sampleFlags +
", compTimeOffset=" + sampleCompositionTimeOffset +
'}';
}
}
}