/*
* Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.sun.media.sound;
import java.util.Vector;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.IOException;
import java.lang.IllegalArgumentException;
import java.io.BufferedOutputStream;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.RandomAccessFile;
import java.io.SequenceInputStream;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
/**
* AU file writer.
*
* @author Jan Borgersen
*/
public class AuFileWriter extends SunFileWriter {
//$$fb value for length field if length is not known
public final static int UNKNOWN_SIZE=-1;
/**
* AU type
*/
private static final AudioFileFormat.Type auTypes[] = {
AudioFileFormat.Type.AU
};
/**
* Constructs a new AuFileWriter object.
*/
public AuFileWriter() {
super(auTypes);
}
public AudioFileFormat.Type[] getAudioFileTypes(AudioInputStream stream) {
AudioFileFormat.Type[] filetypes = new AudioFileFormat.Type[types.length];
System.arraycopy(types, 0, filetypes, 0, types.length);
// make sure we can write this stream
AudioFormat format = stream.getFormat();
AudioFormat.Encoding encoding = format.getEncoding();
if( (AudioFormat.Encoding.ALAW.equals(encoding)) ||
(AudioFormat.Encoding.ULAW.equals(encoding)) ||
(AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) ||
(AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ) {
return filetypes;
}
return new AudioFileFormat.Type[0];
}
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, OutputStream out) throws IOException {
// we must know the total data length to calculate the file length
//$$fb 2001-07-13: fix for bug 4351296: do not throw an exception
//if( stream.getFrameLength() == AudioSystem.NOT_SPECIFIED ) {
// throw new IOException("stream length not specified");
//}
// throws IllegalArgumentException if not supported
AuFileFormat auFileFormat = (AuFileFormat)getAudioFileFormat(fileType, stream);
int bytesWritten = writeAuFile(stream, auFileFormat, out);
return bytesWritten;
}
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, File out) throws IOException {
// throws IllegalArgumentException if not supported
AuFileFormat auFileFormat = (AuFileFormat)getAudioFileFormat(fileType, stream);
// first write the file without worrying about length fields
FileOutputStream fos = new FileOutputStream( out ); // throws IOException
BufferedOutputStream bos = new BufferedOutputStream( fos, bisBufferSize );
int bytesWritten = writeAuFile(stream, auFileFormat, bos );
bos.close();
// now, if length fields were not specified, calculate them,
// open as a random access file, write the appropriate fields,
// close again....
if( auFileFormat.getByteLength()== AudioSystem.NOT_SPECIFIED ) {
// $$kk: 10.22.99: jan: please either implement this or throw an exception!
// $$fb: 2001-07-13: done. Fixes Bug 4479981
RandomAccessFile raf=new RandomAccessFile(out, "rw");
if (raf.length()<=0x7FFFFFFFl) {
// skip AU magic and data offset field
raf.skipBytes(8);
raf.writeInt(bytesWritten-AuFileFormat.AU_HEADERSIZE);
// that's all
}
raf.close();
}
return bytesWritten;
}
// -------------------------------------------------------------
/**
* Returns the AudioFileFormat describing the file that will be written from this AudioInputStream.
* Throws IllegalArgumentException if not supported.
*/
private AudioFileFormat getAudioFileFormat(AudioFileFormat.Type type, AudioInputStream stream) {
AudioFormat format = null;
AuFileFormat fileFormat = null;
AudioFormat.Encoding encoding = AudioFormat.Encoding.PCM_SIGNED;
AudioFormat streamFormat = stream.getFormat();
AudioFormat.Encoding streamEncoding = streamFormat.getEncoding();
float sampleRate;
int sampleSizeInBits;
int channels;
int frameSize;
float frameRate;
int fileSize;
if( !types[0].equals(type) ) {
throw new IllegalArgumentException("File type " + type + " not supported.");
}
if( (AudioFormat.Encoding.ALAW.equals(streamEncoding)) ||
(AudioFormat.Encoding.ULAW.equals(streamEncoding)) ) {
encoding = streamEncoding;
sampleSizeInBits = streamFormat.getSampleSizeInBits();
} else if ( streamFormat.getSampleSizeInBits()==8 ) {
encoding = AudioFormat.Encoding.PCM_SIGNED;
sampleSizeInBits=8;
} else {
encoding = AudioFormat.Encoding.PCM_SIGNED;
sampleSizeInBits=streamFormat.getSampleSizeInBits();
}
format = new AudioFormat( encoding,
streamFormat.getSampleRate(),
sampleSizeInBits,
streamFormat.getChannels(),
streamFormat.getFrameSize(),
streamFormat.getFrameRate(),
true); // AU is always big endian
if( stream.getFrameLength()!=AudioSystem.NOT_SPECIFIED ) {
fileSize = (int)stream.getFrameLength()*streamFormat.getFrameSize() + AuFileFormat.AU_HEADERSIZE;
} else {
fileSize = AudioSystem.NOT_SPECIFIED;
}
fileFormat = new AuFileFormat( AudioFileFormat.Type.AU,
fileSize,
format,
(int)stream.getFrameLength() );
return fileFormat;
}
private InputStream getFileStream(AuFileFormat auFileFormat, InputStream audioStream) throws IOException {
// private method ... assumes auFileFormat is a supported file type
AudioFormat format = auFileFormat.getFormat();
int magic = AuFileFormat.AU_SUN_MAGIC;
int headerSize = AuFileFormat.AU_HEADERSIZE;
long dataSize = auFileFormat.getFrameLength();
//$$fb fix for Bug 4351296
//int dataSizeInBytes = dataSize * format.getFrameSize();
long dataSizeInBytes = (dataSize==AudioSystem.NOT_SPECIFIED)?UNKNOWN_SIZE:dataSize * format.getFrameSize();
if (dataSizeInBytes>0x7FFFFFFFl) {
dataSizeInBytes=UNKNOWN_SIZE;
}
int encoding_local = auFileFormat.getAuType();
int sampleRate = (int)format.getSampleRate();
int channels = format.getChannels();
//$$fb below is the fix for 4297100.
//boolean bigendian = format.isBigEndian();
boolean bigendian = true; // force bigendian
byte header[] = null;
ByteArrayInputStream headerStream = null;
ByteArrayOutputStream baos = null;
DataOutputStream dos = null;
SequenceInputStream auStream = null;
AudioFormat audioStreamFormat = null;
AudioFormat.Encoding encoding = null;
InputStream codedAudioStream = audioStream;
// if we need to do any format conversion, do it here.
codedAudioStream = audioStream;
if( audioStream instanceof AudioInputStream ) {
audioStreamFormat = ((AudioInputStream)audioStream).getFormat();
encoding = audioStreamFormat.getEncoding();
//$$ fb 2001-07-13: Bug 4391108
if( (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ||
(AudioFormat.Encoding.PCM_SIGNED.equals(encoding)
&& bigendian != audioStreamFormat.isBigEndian()) ) {
// plug in the transcoder to convert to PCM_SIGNED, bigendian
// NOTE: little endian AU is not common, so we're always converting
// to big endian unless the passed in audioFileFormat is little.
// $$fb this NOTE is superseded. We always write big endian au files, this is by far the standard.
codedAudioStream = AudioSystem.getAudioInputStream( new AudioFormat (
AudioFormat.Encoding.PCM_SIGNED,
audioStreamFormat.getSampleRate(),
audioStreamFormat.getSampleSizeInBits(),
audioStreamFormat.getChannels(),
audioStreamFormat.getFrameSize(),
audioStreamFormat.getFrameRate(),
bigendian),
(AudioInputStream)audioStream );
}
}
baos = new ByteArrayOutputStream();
dos = new DataOutputStream(baos);
if (bigendian) {
dos.writeInt(AuFileFormat.AU_SUN_MAGIC);
dos.writeInt(headerSize);
dos.writeInt((int)dataSizeInBytes);
dos.writeInt(encoding_local);
dos.writeInt(sampleRate);
dos.writeInt(channels);
} else {
dos.writeInt(AuFileFormat.AU_SUN_INV_MAGIC);
dos.writeInt(big2little(headerSize));
dos.writeInt(big2little((int)dataSizeInBytes));
dos.writeInt(big2little(encoding_local));
dos.writeInt(big2little(sampleRate));
dos.writeInt(big2little(channels));
}
// Now create a new InputStream from headerStream and the InputStream
// in audioStream
dos.close();
header = baos.toByteArray();
headerStream = new ByteArrayInputStream( header );
auStream = new SequenceInputStream(headerStream,codedAudioStream);
return auStream;
}
private int writeAuFile(InputStream in, AuFileFormat auFileFormat, OutputStream out) throws IOException {
int bytesRead = 0;
int bytesWritten = 0;
InputStream fileStream = getFileStream(auFileFormat, in);
byte buffer[] = new byte[bisBufferSize];
int maxLength = auFileFormat.getByteLength();
while( (bytesRead = fileStream.read( buffer )) >= 0 ) {
if (maxLength>0) {
if( bytesRead < maxLength ) {
out.write( buffer, 0, (int)bytesRead );
bytesWritten += bytesRead;
maxLength -= bytesRead;
} else {
out.write( buffer, 0, (int)maxLength );
bytesWritten += maxLength;
maxLength = 0;
break;
}
} else {
out.write( buffer, 0, (int)bytesRead );
bytesWritten += bytesRead;
}
}
return bytesWritten;
}
}