com.mp4parser.iso14496.part15.AvcDecoderConfigurationRecord 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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package com.mp4parser.iso14496.part15;
import com.coremedia.iso.Hex;
import com.coremedia.iso.IsoTypeReader;
import com.coremedia.iso.IsoTypeWriter;
import com.googlecode.mp4parser.authoring.tracks.CleanInputStream;
import com.googlecode.mp4parser.boxes.mp4.objectdescriptors.BitReaderBuffer;
import com.googlecode.mp4parser.boxes.mp4.objectdescriptors.BitWriterBuffer;
import com.googlecode.mp4parser.h264.model.PictureParameterSet;
import com.googlecode.mp4parser.h264.model.SeqParameterSet;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
/**
*
*/
public class AvcDecoderConfigurationRecord {
public int configurationVersion;
public int avcProfileIndication;
public int profileCompatibility;
public int avcLevelIndication;
public int lengthSizeMinusOne;
public List sequenceParameterSets = new ArrayList();
public List pictureParameterSets = new ArrayList();
public boolean hasExts = true;
public int chromaFormat = 1;
public int bitDepthLumaMinus8 = 0;
public int bitDepthChromaMinus8 = 0;
public List sequenceParameterSetExts = new ArrayList();
/**
* Just for non-spec-conform encoders
*/
public int lengthSizeMinusOnePaddingBits = 63;
public int numberOfSequenceParameterSetsPaddingBits = 7;
public int chromaFormatPaddingBits = 31;
public int bitDepthLumaMinus8PaddingBits = 31;
public int bitDepthChromaMinus8PaddingBits = 31;
public AvcDecoderConfigurationRecord() {
}
public AvcDecoderConfigurationRecord(ByteBuffer content) {
configurationVersion = IsoTypeReader.readUInt8(content);
avcProfileIndication = IsoTypeReader.readUInt8(content);
profileCompatibility = IsoTypeReader.readUInt8(content);
avcLevelIndication = IsoTypeReader.readUInt8(content);
BitReaderBuffer brb = new BitReaderBuffer(content);
lengthSizeMinusOnePaddingBits = brb.readBits(6);
lengthSizeMinusOne = brb.readBits(2);
numberOfSequenceParameterSetsPaddingBits = brb.readBits(3);
int numberOfSeuqenceParameterSets = brb.readBits(5);
for (int i = 0; i < numberOfSeuqenceParameterSets; i++) {
int sequenceParameterSetLength = IsoTypeReader.readUInt16(content);
byte[] sequenceParameterSetNALUnit = new byte[sequenceParameterSetLength];
content.get(sequenceParameterSetNALUnit);
sequenceParameterSets.add(sequenceParameterSetNALUnit);
}
long numberOfPictureParameterSets = IsoTypeReader.readUInt8(content);
for (int i = 0; i < numberOfPictureParameterSets; i++) {
int pictureParameterSetLength = IsoTypeReader.readUInt16(content);
byte[] pictureParameterSetNALUnit = new byte[pictureParameterSetLength];
content.get(pictureParameterSetNALUnit);
pictureParameterSets.add(pictureParameterSetNALUnit);
}
if (content.remaining() < 4) {
hasExts = false;
}
if (hasExts && (avcProfileIndication == 100 || avcProfileIndication == 110 || avcProfileIndication == 122 || avcProfileIndication == 144)) {
// actually only some bits are interesting so masking with & x would be good but not all Mp4 creating tools set the reserved bits to 1.
// So we need to store all bits
brb = new BitReaderBuffer(content);
chromaFormatPaddingBits = brb.readBits(6);
chromaFormat = brb.readBits(2);
bitDepthLumaMinus8PaddingBits = brb.readBits(5);
bitDepthLumaMinus8 = brb.readBits(3);
bitDepthChromaMinus8PaddingBits = brb.readBits(5);
bitDepthChromaMinus8 = brb.readBits(3);
long numOfSequenceParameterSetExt = IsoTypeReader.readUInt8(content);
for (int i = 0; i < numOfSequenceParameterSetExt; i++) {
int sequenceParameterSetExtLength = IsoTypeReader.readUInt16(content);
byte[] sequenceParameterSetExtNALUnit = new byte[sequenceParameterSetExtLength];
content.get(sequenceParameterSetExtNALUnit);
sequenceParameterSetExts.add(sequenceParameterSetExtNALUnit);
}
} else {
chromaFormat = -1;
bitDepthLumaMinus8 = -1;
bitDepthChromaMinus8 = -1;
}
}
public void getContent(ByteBuffer byteBuffer) {
IsoTypeWriter.writeUInt8(byteBuffer, configurationVersion);
IsoTypeWriter.writeUInt8(byteBuffer, avcProfileIndication);
IsoTypeWriter.writeUInt8(byteBuffer, profileCompatibility);
IsoTypeWriter.writeUInt8(byteBuffer, avcLevelIndication);
BitWriterBuffer bwb = new BitWriterBuffer(byteBuffer);
bwb.writeBits(lengthSizeMinusOnePaddingBits, 6);
bwb.writeBits(lengthSizeMinusOne, 2);
bwb.writeBits(numberOfSequenceParameterSetsPaddingBits, 3);
bwb.writeBits(pictureParameterSets.size(), 5);
for (byte[] sequenceParameterSetNALUnit : sequenceParameterSets) {
IsoTypeWriter.writeUInt16(byteBuffer, sequenceParameterSetNALUnit.length);
byteBuffer.put(sequenceParameterSetNALUnit);
}
IsoTypeWriter.writeUInt8(byteBuffer, pictureParameterSets.size());
for (byte[] pictureParameterSetNALUnit : pictureParameterSets) {
IsoTypeWriter.writeUInt16(byteBuffer, pictureParameterSetNALUnit.length);
byteBuffer.put(pictureParameterSetNALUnit);
}
if (hasExts && (avcProfileIndication == 100 || avcProfileIndication == 110 || avcProfileIndication == 122 || avcProfileIndication == 144)) {
bwb = new BitWriterBuffer(byteBuffer);
bwb.writeBits(chromaFormatPaddingBits, 6);
bwb.writeBits(chromaFormat, 2);
bwb.writeBits(bitDepthLumaMinus8PaddingBits, 5);
bwb.writeBits(bitDepthLumaMinus8, 3);
bwb.writeBits(bitDepthChromaMinus8PaddingBits, 5);
bwb.writeBits(bitDepthChromaMinus8, 3);
for (byte[] sequenceParameterSetExtNALUnit : sequenceParameterSetExts) {
IsoTypeWriter.writeUInt16(byteBuffer, sequenceParameterSetExtNALUnit.length);
byteBuffer.put(sequenceParameterSetExtNALUnit);
}
}
}
public long getContentSize() {
long size = 5;
size += 1; // sequenceParamsetLength
for (byte[] sequenceParameterSetNALUnit : sequenceParameterSets) {
size += 2; //lengthSizeMinusOne field
size += sequenceParameterSetNALUnit.length;
}
size += 1; // pictureParamsetLength
for (byte[] pictureParameterSetNALUnit : pictureParameterSets) {
size += 2; //lengthSizeMinusOne field
size += pictureParameterSetNALUnit.length;
}
if (hasExts && (avcProfileIndication == 100 || avcProfileIndication == 110 || avcProfileIndication == 122 || avcProfileIndication == 144)) {
size += 4;
for (byte[] sequenceParameterSetExtNALUnit : sequenceParameterSetExts) {
size += 2;
size += sequenceParameterSetExtNALUnit.length;
}
}
return size;
}
public String[] getPPS() {
ArrayList l = new ArrayList();
for (byte[] pictureParameterSet : pictureParameterSets) {
String details = "not parsable";
try {
// skip NalUnit Header (will not work 100% but at least most cases)
details = PictureParameterSet.read(new ByteArrayInputStream(pictureParameterSet, 1, pictureParameterSet.length - 1)).toString();
} catch (IOException e) {
throw new RuntimeException(e);
}
l.add(details);
}
return l.toArray(new String[l.size()]);
}
public String[] getSPS() {
ArrayList l = new ArrayList();
for (byte[] sequenceParameterSet : sequenceParameterSets) {
String detail = "not parsable";
try {
detail = SeqParameterSet.read(new CleanInputStream(new ByteArrayInputStream(sequenceParameterSet, 1, sequenceParameterSet.length - 1))).toString();
} catch (IOException e) {
}
l.add(detail);
}
return l.toArray(new String[l.size()]);
}
public List getSequenceParameterSetsAsStrings() {
List result = new ArrayList(sequenceParameterSets.size());
for (byte[] parameterSet : sequenceParameterSets) {
result.add(Hex.encodeHex(parameterSet));
}
return result;
}
public List getSequenceParameterSetExtsAsStrings() {
List result = new ArrayList(sequenceParameterSetExts.size());
for (byte[] parameterSet : sequenceParameterSetExts) {
result.add(Hex.encodeHex(parameterSet));
}
return result;
}
public List getPictureParameterSetsAsStrings() {
List result = new ArrayList(pictureParameterSets.size());
for (byte[] parameterSet : pictureParameterSets) {
result.add(Hex.encodeHex(parameterSet));
}
return result;
}
@Override
public String toString() {
return "AvcDecoderConfigurationRecord{" +
"configurationVersion=" + configurationVersion +
", avcProfileIndication=" + avcProfileIndication +
", profileCompatibility=" + profileCompatibility +
", avcLevelIndication=" + avcLevelIndication +
", lengthSizeMinusOne=" + lengthSizeMinusOne +
", hasExts=" + hasExts +
", chromaFormat=" + chromaFormat +
", bitDepthLumaMinus8=" + bitDepthLumaMinus8 +
", bitDepthChromaMinus8=" + bitDepthChromaMinus8 +
", lengthSizeMinusOnePaddingBits=" + lengthSizeMinusOnePaddingBits +
", numberOfSequenceParameterSetsPaddingBits=" + numberOfSequenceParameterSetsPaddingBits +
", chromaFormatPaddingBits=" + chromaFormatPaddingBits +
", bitDepthLumaMinus8PaddingBits=" + bitDepthLumaMinus8PaddingBits +
", bitDepthChromaMinus8PaddingBits=" + bitDepthChromaMinus8PaddingBits +
'}';
}
}