Java example source code file (WaveFileWriter.java)
The WaveFileWriter.java Java example source code
/*
* Copyright (c) 1999, 2013, 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.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.IOException;
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;
//$$fb this class is buggy. Should be replaced in future.
/**
* WAVE file writer.
*
* @author Jan Borgersen
*/
public final class WaveFileWriter extends SunFileWriter {
// magic numbers
static final int RIFF_MAGIC = 1380533830;
static final int WAVE_MAGIC = 1463899717;
static final int FMT_MAGIC = 0x666d7420; // "fmt "
static final int DATA_MAGIC = 0x64617461; // "data"
// encodings
static final int WAVE_FORMAT_UNKNOWN = 0x0000;
static final int WAVE_FORMAT_PCM = 0x0001;
static final int WAVE_FORMAT_ADPCM = 0x0002;
static final int WAVE_FORMAT_ALAW = 0x0006;
static final int WAVE_FORMAT_MULAW = 0x0007;
static final int WAVE_FORMAT_OKI_ADPCM = 0x0010;
static final int WAVE_FORMAT_DIGISTD = 0x0015;
static final int WAVE_FORMAT_DIGIFIX = 0x0016;
static final int WAVE_IBM_FORMAT_MULAW = 0x0101;
static final int WAVE_IBM_FORMAT_ALAW = 0x0102;
static final int WAVE_IBM_FORMAT_ADPCM = 0x0103;
static final int WAVE_FORMAT_DVI_ADPCM = 0x0011;
static final int WAVE_FORMAT_SX7383 = 0x1C07;
/**
* Constructs a new WaveFileWriter object.
*/
public WaveFileWriter() {
super(new AudioFileFormat.Type[]{AudioFileFormat.Type.WAVE});
}
// METHODS TO IMPLEMENT AudioFileWriter
public AudioFileFormat.Type[] getAudioFileTypes(AudioInputStream stream) {
AudioFileFormat.Type[] filetypes = new AudioFileFormat.Type[types.length];
System.arraycopy(types, 0, filetypes, 0, types.length);
// make sure we can write this stream
AudioFormat format = stream.getFormat();
AudioFormat.Encoding encoding = format.getEncoding();
if( AudioFormat.Encoding.ALAW.equals(encoding) ||
AudioFormat.Encoding.ULAW.equals(encoding) ||
AudioFormat.Encoding.PCM_SIGNED.equals(encoding) ||
AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding) ) {
return filetypes;
}
return new AudioFileFormat.Type[0];
}
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, OutputStream out) throws IOException {
//$$fb the following check must come first ! Otherwise
// the next frame length check may throw an IOException and
// interrupt iterating File Writers. (see bug 4351296)
// throws IllegalArgumentException if not supported
WaveFileFormat waveFileFormat = (WaveFileFormat)getAudioFileFormat(fileType, stream);
//$$fb when we got this far, we are committed to write this file
// we must know the total data length to calculate the file length
if( stream.getFrameLength() == AudioSystem.NOT_SPECIFIED ) {
throw new IOException("stream length not specified");
}
int bytesWritten = writeWaveFile(stream, waveFileFormat, out);
return bytesWritten;
}
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, File out) throws IOException {
// throws IllegalArgumentException if not supported
WaveFileFormat waveFileFormat = (WaveFileFormat)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 = writeWaveFile(stream, waveFileFormat, 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( waveFileFormat.getByteLength()== AudioSystem.NOT_SPECIFIED ) {
int dataLength=bytesWritten-waveFileFormat.getHeaderSize();
int riffLength=dataLength + waveFileFormat.getHeaderSize() - 8;
RandomAccessFile raf=new RandomAccessFile(out, "rw");
// skip RIFF magic
raf.skipBytes(4);
raf.writeInt(big2little( riffLength ));
// skip WAVE magic, fmt_ magic, fmt_ length, fmt_ chunk, data magic
raf.skipBytes(4+4+4+WaveFileFormat.getFmtChunkSize(waveFileFormat.getWaveType())+4);
raf.writeInt(big2little( dataLength ));
// 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;
WaveFileFormat 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.");
}
int waveType = WaveFileFormat.WAVE_FORMAT_PCM;
if( AudioFormat.Encoding.ALAW.equals(streamEncoding) ||
AudioFormat.Encoding.ULAW.equals(streamEncoding) ) {
encoding = streamEncoding;
sampleSizeInBits = streamFormat.getSampleSizeInBits();
if (streamEncoding.equals(AudioFormat.Encoding.ALAW)) {
waveType = WAVE_FORMAT_ALAW;
} else {
waveType = WAVE_FORMAT_MULAW;
}
} else if ( streamFormat.getSampleSizeInBits()==8 ) {
encoding = AudioFormat.Encoding.PCM_UNSIGNED;
sampleSizeInBits=8;
} else {
encoding = AudioFormat.Encoding.PCM_SIGNED;
sampleSizeInBits=streamFormat.getSampleSizeInBits();
}
format = new AudioFormat( encoding,
streamFormat.getSampleRate(),
sampleSizeInBits,
streamFormat.getChannels(),
streamFormat.getFrameSize(),
streamFormat.getFrameRate(),
false); // WAVE is little endian
if( stream.getFrameLength()!=AudioSystem.NOT_SPECIFIED ) {
fileSize = (int)stream.getFrameLength()*streamFormat.getFrameSize()
+ WaveFileFormat.getHeaderSize(waveType);
} else {
fileSize = AudioSystem.NOT_SPECIFIED;
}
fileFormat = new WaveFileFormat( AudioFileFormat.Type.WAVE,
fileSize,
format,
(int)stream.getFrameLength() );
return fileFormat;
}
private int writeWaveFile(InputStream in, WaveFileFormat waveFileFormat, OutputStream out) throws IOException {
int bytesRead = 0;
int bytesWritten = 0;
InputStream fileStream = getFileStream(waveFileFormat, in);
byte buffer[] = new byte[bisBufferSize];
int maxLength = waveFileFormat.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;
}
private InputStream getFileStream(WaveFileFormat waveFileFormat, InputStream audioStream) throws IOException {
// private method ... assumes audioFileFormat is a supported file type
// WAVE header fields
AudioFormat audioFormat = waveFileFormat.getFormat();
int headerLength = waveFileFormat.getHeaderSize();
int riffMagic = WaveFileFormat.RIFF_MAGIC;
int waveMagic = WaveFileFormat.WAVE_MAGIC;
int fmtMagic = WaveFileFormat.FMT_MAGIC;
int fmtLength = WaveFileFormat.getFmtChunkSize(waveFileFormat.getWaveType());
short wav_type = (short) waveFileFormat.getWaveType();
short channels = (short) audioFormat.getChannels();
short sampleSizeInBits = (short) audioFormat.getSampleSizeInBits();
int sampleRate = (int) audioFormat.getSampleRate();
int frameSizeInBytes = (int) audioFormat.getFrameSize();
int frameRate = (int) audioFormat.getFrameRate();
int avgBytesPerSec = channels * sampleSizeInBits * sampleRate / 8;;
short blockAlign = (short) ((sampleSizeInBits / 8) * channels);
int dataMagic = WaveFileFormat.DATA_MAGIC;
int dataLength = waveFileFormat.getFrameLength() * frameSizeInBytes;
int length = waveFileFormat.getByteLength();
int riffLength = dataLength + headerLength - 8;
byte header[] = null;
ByteArrayInputStream headerStream = null;
ByteArrayOutputStream baos = null;
DataOutputStream dos = null;
SequenceInputStream waveStream = null;
AudioFormat audioStreamFormat = null;
AudioFormat.Encoding encoding = null;
InputStream codedAudioStream = audioStream;
// if audioStream is an AudioInputStream and we need to convert, do it here...
if(audioStream instanceof AudioInputStream) {
audioStreamFormat = ((AudioInputStream)audioStream).getFormat();
encoding = audioStreamFormat.getEncoding();
if(AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) {
if( sampleSizeInBits==8 ) {
wav_type = WaveFileFormat.WAVE_FORMAT_PCM;
// plug in the transcoder to convert from PCM_SIGNED to PCM_UNSIGNED
codedAudioStream = AudioSystem.getAudioInputStream( new AudioFormat(
AudioFormat.Encoding.PCM_UNSIGNED,
audioStreamFormat.getSampleRate(),
audioStreamFormat.getSampleSizeInBits(),
audioStreamFormat.getChannels(),
audioStreamFormat.getFrameSize(),
audioStreamFormat.getFrameRate(),
false),
(AudioInputStream)audioStream);
}
}
if( (AudioFormat.Encoding.PCM_SIGNED.equals(encoding) && audioStreamFormat.isBigEndian()) ||
(AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding) && !audioStreamFormat.isBigEndian()) ||
(AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding) && audioStreamFormat.isBigEndian()) ) {
if( sampleSizeInBits!=8) {
wav_type = WaveFileFormat.WAVE_FORMAT_PCM;
// plug in the transcoder to convert to PCM_SIGNED_LITTLE_ENDIAN
codedAudioStream = AudioSystem.getAudioInputStream( new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
audioStreamFormat.getSampleRate(),
audioStreamFormat.getSampleSizeInBits(),
audioStreamFormat.getChannels(),
audioStreamFormat.getFrameSize(),
audioStreamFormat.getFrameRate(),
false),
(AudioInputStream)audioStream);
}
}
}
// Now push the header into a stream, concat, and return the new SequenceInputStream
baos = new ByteArrayOutputStream();
dos = new DataOutputStream(baos);
// we write in littleendian...
dos.writeInt(riffMagic);
dos.writeInt(big2little( riffLength ));
dos.writeInt(waveMagic);
dos.writeInt(fmtMagic);
dos.writeInt(big2little(fmtLength));
dos.writeShort(big2littleShort(wav_type));
dos.writeShort(big2littleShort(channels));
dos.writeInt(big2little(sampleRate));
dos.writeInt(big2little(avgBytesPerSec));
dos.writeShort(big2littleShort(blockAlign));
dos.writeShort(big2littleShort(sampleSizeInBits));
//$$fb 2002-04-16: Fix for 4636355: RIFF audio headers could be _more_ spec compliant
if (wav_type != WaveFileFormat.WAVE_FORMAT_PCM) {
// add length 0 for "codec specific data length"
dos.writeShort(0);
}
dos.writeInt(dataMagic);
dos.writeInt(big2little(dataLength));
dos.close();
header = baos.toByteArray();
headerStream = new ByteArrayInputStream( header );
waveStream = new SequenceInputStream(headerStream,
new NoCloseInputStream(codedAudioStream));
return (InputStream)waveStream;
}
}
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