/*
* Copyright 2008 CoreMedia AG, 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.coremedia.iso.boxes.sampleentry;
import com.coremedia.iso.BoxParser;
import com.coremedia.iso.IsoTypeReader;
import com.coremedia.iso.IsoTypeWriter;
import com.coremedia.iso.boxes.Box;
import com.coremedia.iso.boxes.ContainerBox;
import java.nio.ByteBuffer;
/**
* Contains basic information about the audio samples in this track. Format-specific information
* is appened as boxes after the data described in ISO/IEC 14496-12 chapter 8.16.2.
*/
public class AudioSampleEntry extends SampleEntry implements ContainerBox {
public static final String TYPE1 = "samr";
public static final String TYPE2 = "sawb";
public static final String TYPE3 = "mp4a";
public static final String TYPE4 = "drms";
public static final String TYPE5 = "alac";
public static final String TYPE7 = "owma";
public static final String TYPE8 = "ac-3"; /* ETSI TS 102 366 1.2.1 Annex F */
public static final String TYPE9 = "ec-3"; /* ETSI TS 102 366 1.2.1 Annex F */
public static final String TYPE10 = "mlpa";
/**
* Identifier for an encrypted audio track.
*
* @see com.coremedia.iso.boxes.ProtectionSchemeInformationBox
*/
public static final String TYPE_ENCRYPTED = "enca";
private int channelCount;
private int sampleSize;
private long sampleRate;
private int soundVersion;
private int compressionId;
private int packetSize;
private long samplesPerPacket;
private long bytesPerPacket;
private long bytesPerFrame;
private long bytesPerSample;
private int reserved1;
private long reserved2;
private byte[] soundVersion2Data;
private BoxParser boxParser;
public AudioSampleEntry(String type) {
super(type);
}
public int getChannelCount() {
return channelCount;
}
public int getSampleSize() {
return sampleSize;
}
public long getSampleRate() {
return sampleRate;
}
public int getSoundVersion() {
return soundVersion;
}
public int getCompressionId() {
return compressionId;
}
public int getPacketSize() {
return packetSize;
}
public long getSamplesPerPacket() {
return samplesPerPacket;
}
public long getBytesPerPacket() {
return bytesPerPacket;
}
public long getBytesPerFrame() {
return bytesPerFrame;
}
public long getBytesPerSample() {
return bytesPerSample;
}
public void setChannelCount(int channelCount) {
this.channelCount = channelCount;
}
public void setSampleSize(int sampleSize) {
this.sampleSize = sampleSize;
}
public void setSampleRate(long sampleRate) {
this.sampleRate = sampleRate;
}
public void setSoundVersion(int soundVersion) {
this.soundVersion = soundVersion;
}
public void setCompressionId(int compressionId) {
this.compressionId = compressionId;
}
public void setPacketSize(int packetSize) {
this.packetSize = packetSize;
}
public void setSamplesPerPacket(long samplesPerPacket) {
this.samplesPerPacket = samplesPerPacket;
}
public void setBytesPerPacket(long bytesPerPacket) {
this.bytesPerPacket = bytesPerPacket;
}
public void setBytesPerFrame(long bytesPerFrame) {
this.bytesPerFrame = bytesPerFrame;
}
public void setBytesPerSample(long bytesPerSample) {
this.bytesPerSample = bytesPerSample;
}
public void setReserved1(int reserved1) {
this.reserved1 = reserved1;
}
public void setReserved2(long reserved2) {
this.reserved2 = reserved2;
}
public void setSoundVersion2Data(byte[] soundVersion2Data) {
this.soundVersion2Data = soundVersion2Data;
}
public void setBoxParser(BoxParser boxParser) {
this.boxParser = boxParser;
}
@Override
public void _parseDetails(ByteBuffer content) {
_parseReservedAndDataReferenceIndex(content); //parses the six reserved bytes and dataReferenceIndex
// 8 bytes already parsed
//reserved bits - used by qt
soundVersion = IsoTypeReader.readUInt16(content);
//reserved
reserved1 = IsoTypeReader.readUInt16(content);
reserved2 = IsoTypeReader.readUInt32(content);
channelCount = IsoTypeReader.readUInt16(content);
sampleSize = IsoTypeReader.readUInt16(content);
//reserved bits - used by qt
compressionId = IsoTypeReader.readUInt16(content);
//reserved bits - used by qt
packetSize = IsoTypeReader.readUInt16(content);
//sampleRate = in.readFixedPoint1616();
sampleRate = IsoTypeReader.readUInt32(content);
if (!type.equals("mlpa")) {
sampleRate = sampleRate >>> 16;
}
//more qt stuff - see http://mp4v2.googlecode.com/svn-history/r388/trunk/src/atom_sound.cpp
if (soundVersion > 0) {
samplesPerPacket = IsoTypeReader.readUInt32(content);
bytesPerPacket = IsoTypeReader.readUInt32(content);
bytesPerFrame = IsoTypeReader.readUInt32(content);
bytesPerSample = IsoTypeReader.readUInt32(content);
}
if (soundVersion == 2) {
soundVersion2Data = new byte[20];
content.get(20);
}
_parseChildBoxes(content);
}
@Override
protected long getContentSize() {
long contentSize = 28;
contentSize += soundVersion > 0 ? 16 : 0;
contentSize += soundVersion == 2 ? 20 : 0;
for (Box boxe : boxes) {
contentSize += boxe.getSize();
}
return contentSize;
}
public String toString() {
return "AudioSampleEntry";
}
@Override
protected void getContent(ByteBuffer byteBuffer) {
_writeReservedAndDataReferenceIndex(byteBuffer);
IsoTypeWriter.writeUInt16(byteBuffer, soundVersion);
IsoTypeWriter.writeUInt16(byteBuffer, reserved1);
IsoTypeWriter.writeUInt32(byteBuffer, reserved2);
IsoTypeWriter.writeUInt16(byteBuffer, channelCount);
IsoTypeWriter.writeUInt16(byteBuffer, sampleSize);
IsoTypeWriter.writeUInt16(byteBuffer, compressionId);
IsoTypeWriter.writeUInt16(byteBuffer, packetSize);
//isos.writeFixedPont1616(getSampleRate());
if (type.equals("mlpa")) {
IsoTypeWriter.writeUInt32(byteBuffer, getSampleRate());
} else {
IsoTypeWriter.writeUInt32(byteBuffer, getSampleRate() << 16);
}
if (soundVersion > 0) {
IsoTypeWriter.writeUInt32(byteBuffer, samplesPerPacket);
IsoTypeWriter.writeUInt32(byteBuffer, bytesPerPacket);
IsoTypeWriter.writeUInt32(byteBuffer, bytesPerFrame);
IsoTypeWriter.writeUInt32(byteBuffer, bytesPerSample);
}
if (soundVersion == 2) {
byteBuffer.put(soundVersion2Data);
}
_writeChildBoxes(byteBuffer);
}
}