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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
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*
* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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;
//$$fb this class is buggy. Should be replaced in future.
/**
* AIFF file writer.
*
* @author Jan Borgersen
*/
public final class AiffFileWriter extends SunFileWriter {
/**
* Constructs a new AiffFileWriter object.
*/
public AiffFileWriter() {
super(new AudioFileFormat.Type[]{AudioFileFormat.Type.AIFF});
}
// METHODS TO IMPLEMENT AudioFileWriter
public AudioFileFormat.Type[] getAudioFileTypes(AudioInputStream stream) {
AudioFileFormat.Type[] filetypes = new AudioFileFormat.Type[types.length];
System.arraycopy(types, 0, filetypes, 0, types.length);
// make sure we can write this stream
AudioFormat format = stream.getFormat();
AudioFormat.Encoding encoding = format.getEncoding();
if( (AudioFormat.Encoding.ALAW.equals(encoding)) ||
(AudioFormat.Encoding.ULAW.equals(encoding)) ||
(AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) ||
(AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ) {
return filetypes;
}
return new AudioFileFormat.Type[0];
}
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, OutputStream out) throws IOException {
//$$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
AiffFileFormat aiffFileFormat = (AiffFileFormat)getAudioFileFormat(fileType, stream);
// 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 = writeAiffFile(stream, aiffFileFormat, out);
return bytesWritten;
}
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, File out) throws IOException {
// throws IllegalArgumentException if not supported
AiffFileFormat aiffFileFormat = (AiffFileFormat)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 = writeAiffFile(stream, aiffFileFormat, 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( aiffFileFormat.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
int ssndBlockSize = (aiffFileFormat.getFormat().getChannels() * aiffFileFormat.getFormat().getSampleSizeInBits());
int aiffLength=bytesWritten;
int ssndChunkSize=aiffLength-aiffFileFormat.getHeaderSize()+16;
long dataSize=ssndChunkSize-16;
int numFrames=(int) (dataSize*8/ssndBlockSize);
RandomAccessFile raf=new RandomAccessFile(out, "rw");
// skip FORM magic
raf.skipBytes(4);
raf.writeInt(aiffLength-8);
// skip aiff2 magic, fver chunk, comm magic, comm size, channel count,
raf.skipBytes(4+aiffFileFormat.getFverChunkSize()+4+4+2);
// write frame count
raf.writeInt(numFrames);
// skip sample size, samplerate, SSND magic
raf.skipBytes(2+10+4);
raf.writeInt(ssndChunkSize-8);
// 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;
AiffFileFormat 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;
boolean convert8to16 = false;
if( !types[0].equals(type) ) {
throw new IllegalArgumentException("File type " + type + " not supported.");
}
if( (AudioFormat.Encoding.ALAW.equals(streamEncoding)) ||
(AudioFormat.Encoding.ULAW.equals(streamEncoding)) ) {
if( streamFormat.getSampleSizeInBits()==8 ) {
encoding = AudioFormat.Encoding.PCM_SIGNED;
sampleSizeInBits=16;
convert8to16 = true;
} else {
// can't convert non-8-bit ALAW,ULAW
throw new IllegalArgumentException("Encoding " + streamEncoding + " supported only for 8-bit data.");
}
} 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(),
true); // AIFF is big endian
if( stream.getFrameLength()!=AudioSystem.NOT_SPECIFIED ) {
if( convert8to16 ) {
fileSize = (int)stream.getFrameLength()*streamFormat.getFrameSize()*2 + AiffFileFormat.AIFF_HEADERSIZE;
} else {
fileSize = (int)stream.getFrameLength()*streamFormat.getFrameSize() + AiffFileFormat.AIFF_HEADERSIZE;
}
} else {
fileSize = AudioSystem.NOT_SPECIFIED;
}
fileFormat = new AiffFileFormat( AudioFileFormat.Type.AIFF,
fileSize,
format,
(int)stream.getFrameLength() );
return fileFormat;
}
private int writeAiffFile(InputStream in, AiffFileFormat aiffFileFormat, OutputStream out) throws IOException {
int bytesRead = 0;
int bytesWritten = 0;
InputStream fileStream = getFileStream(aiffFileFormat, in);
byte buffer[] = new byte[bisBufferSize];
int maxLength = aiffFileFormat.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(AiffFileFormat aiffFileFormat, InputStream audioStream) throws IOException {
// private method ... assumes aiffFileFormat is a supported file format
AudioFormat format = aiffFileFormat.getFormat();
AudioFormat streamFormat = null;
AudioFormat.Encoding encoding = null;
//$$fb a little bit nicer handling of constants
//int headerSize = 54;
int headerSize = aiffFileFormat.getHeaderSize();
//int fverChunkSize = 0;
int fverChunkSize = aiffFileFormat.getFverChunkSize();
//int commChunkSize = 26;
int commChunkSize = aiffFileFormat.getCommChunkSize();
int aiffLength = -1;
int ssndChunkSize = -1;
//int ssndOffset = headerSize - 16;
int ssndOffset = aiffFileFormat.getSsndChunkOffset();
short channels = (short) format.getChannels();
short sampleSize = (short) format.getSampleSizeInBits();
int ssndBlockSize = (channels * sampleSize);
int numFrames = aiffFileFormat.getFrameLength();
long dataSize = -1;
if( numFrames != AudioSystem.NOT_SPECIFIED) {
dataSize = (long) numFrames * ssndBlockSize / 8;
ssndChunkSize = (int)dataSize + 16;
aiffLength = (int)dataSize+headerSize;
}
float sampleFramesPerSecond = format.getSampleRate();
int compCode = AiffFileFormat.AIFC_PCM;
byte header[] = null;
ByteArrayInputStream headerStream = null;
ByteArrayOutputStream baos = null;
DataOutputStream dos = null;
SequenceInputStream aiffStream = null;
InputStream codedAudioStream = audioStream;
// if we need to do any format conversion, do it here....
if( audioStream instanceof AudioInputStream ) {
streamFormat = ((AudioInputStream)audioStream).getFormat();
encoding = streamFormat.getEncoding();
// $$jb: Note that AIFF samples are ALWAYS signed
if( (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ||
( (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) && !streamFormat.isBigEndian() ) ) {
// plug in the transcoder to convert to PCM_SIGNED. big endian
codedAudioStream = AudioSystem.getAudioInputStream( new AudioFormat (
AudioFormat.Encoding.PCM_SIGNED,
streamFormat.getSampleRate(),
streamFormat.getSampleSizeInBits(),
streamFormat.getChannels(),
streamFormat.getFrameSize(),
streamFormat.getFrameRate(),
true ),
(AudioInputStream)audioStream );
} else if( (AudioFormat.Encoding.ULAW.equals(encoding)) ||
(AudioFormat.Encoding.ALAW.equals(encoding)) ) {
if( streamFormat.getSampleSizeInBits() != 8 ) {
throw new IllegalArgumentException("unsupported encoding");
}
//$$fb 2001-07-13: this is probably not what we want:
// writing PCM when ULAW/ALAW is requested. AIFC is able to write ULAW !
// plug in the transcoder to convert to PCM_SIGNED_BIG_ENDIAN
codedAudioStream = AudioSystem.getAudioInputStream( new AudioFormat (
AudioFormat.Encoding.PCM_SIGNED,
streamFormat.getSampleRate(),
streamFormat.getSampleSizeInBits() * 2,
streamFormat.getChannels(),
streamFormat.getFrameSize() * 2,
streamFormat.getFrameRate(),
true ),
(AudioInputStream)audioStream );
}
}
// Now create an AIFF stream header...
baos = new ByteArrayOutputStream();
dos = new DataOutputStream(baos);
// Write the outer FORM chunk
dos.writeInt(AiffFileFormat.AIFF_MAGIC);
dos.writeInt( (aiffLength-8) );
dos.writeInt(AiffFileFormat.AIFF_MAGIC2);
// Write a FVER chunk - only for AIFC
//dos.writeInt(FVER_MAGIC);
//dos.writeInt( (fverChunkSize-8) );
//dos.writeInt(FVER_TIMESTAMP);
// Write a COMM chunk
dos.writeInt(AiffFileFormat.COMM_MAGIC);
dos.writeInt( (commChunkSize-8) );
dos.writeShort(channels);
dos.writeInt(numFrames);
dos.writeShort(sampleSize);
write_ieee_extended(dos, sampleFramesPerSecond); // 10 bytes
//Only for AIFC
//dos.writeInt(compCode);
//dos.writeInt(compCode);
//dos.writeShort(0);
// Write the SSND chunk header
dos.writeInt(AiffFileFormat.SSND_MAGIC);
dos.writeInt( (ssndChunkSize-8) );
// ssndOffset and ssndBlockSize set to 0 upon
// recommendation in "Sound Manager" chapter in
// "Inside Macintosh Sound", pp 2-87 (from Babu)
dos.writeInt(0); // ssndOffset
dos.writeInt(0); // ssndBlockSize
// Concat this with the audioStream and return it
dos.close();
header = baos.toByteArray();
headerStream = new ByteArrayInputStream( header );
aiffStream = new SequenceInputStream(headerStream,
new NoCloseInputStream(codedAudioStream));
return aiffStream;
}
// HELPER METHODS
private static final int DOUBLE_MANTISSA_LENGTH = 52;
private static final int DOUBLE_EXPONENT_LENGTH = 11;
private static final long DOUBLE_SIGN_MASK = 0x8000000000000000L;
private static final long DOUBLE_EXPONENT_MASK = 0x7FF0000000000000L;
private static final long DOUBLE_MANTISSA_MASK = 0x000FFFFFFFFFFFFFL;
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