450 lines
18 KiB
Java
450 lines
18 KiB
Java
/*
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* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.media.sound;
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import java.io.File;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.IOException;
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import java.io.BufferedOutputStream;
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import java.io.DataOutputStream;
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import java.io.FileOutputStream;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.RandomAccessFile;
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import java.io.SequenceInputStream;
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import javax.sound.sampled.AudioFileFormat;
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import javax.sound.sampled.AudioInputStream;
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import javax.sound.sampled.AudioFormat;
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import javax.sound.sampled.AudioSystem;
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//$$fb this class is buggy. Should be replaced in future.
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/**
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* AIFF file writer.
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*
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* @author Jan Borgersen
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*/
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public final class AiffFileWriter extends SunFileWriter {
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/**
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* Constructs a new AiffFileWriter object.
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*/
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public AiffFileWriter() {
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super(new AudioFileFormat.Type[]{AudioFileFormat.Type.AIFF});
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}
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// METHODS TO IMPLEMENT AudioFileWriter
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public AudioFileFormat.Type[] getAudioFileTypes(AudioInputStream stream) {
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AudioFileFormat.Type[] filetypes = new AudioFileFormat.Type[types.length];
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System.arraycopy(types, 0, filetypes, 0, types.length);
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// make sure we can write this stream
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AudioFormat format = stream.getFormat();
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AudioFormat.Encoding encoding = format.getEncoding();
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if( (AudioFormat.Encoding.ALAW.equals(encoding)) ||
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(AudioFormat.Encoding.ULAW.equals(encoding)) ||
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(AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) ||
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(AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ) {
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return filetypes;
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}
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return new AudioFileFormat.Type[0];
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}
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public int write(AudioInputStream stream, AudioFileFormat.Type fileType, OutputStream out) throws IOException {
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//$$fb the following check must come first ! Otherwise
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// the next frame length check may throw an IOException and
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// interrupt iterating File Writers. (see bug 4351296)
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// throws IllegalArgumentException if not supported
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AiffFileFormat aiffFileFormat = (AiffFileFormat)getAudioFileFormat(fileType, stream);
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// we must know the total data length to calculate the file length
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if( stream.getFrameLength() == AudioSystem.NOT_SPECIFIED ) {
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throw new IOException("stream length not specified");
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}
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int bytesWritten = writeAiffFile(stream, aiffFileFormat, out);
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return bytesWritten;
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}
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public int write(AudioInputStream stream, AudioFileFormat.Type fileType, File out) throws IOException {
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// throws IllegalArgumentException if not supported
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AiffFileFormat aiffFileFormat = (AiffFileFormat)getAudioFileFormat(fileType, stream);
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// first write the file without worrying about length fields
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FileOutputStream fos = new FileOutputStream( out ); // throws IOException
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BufferedOutputStream bos = new BufferedOutputStream( fos, bisBufferSize );
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int bytesWritten = writeAiffFile(stream, aiffFileFormat, bos );
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bos.close();
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// now, if length fields were not specified, calculate them,
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// open as a random access file, write the appropriate fields,
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// close again....
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if( aiffFileFormat.getByteLength()== AudioSystem.NOT_SPECIFIED ) {
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// $$kk: 10.22.99: jan: please either implement this or throw an exception!
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// $$fb: 2001-07-13: done. Fixes Bug 4479981
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int ssndBlockSize = (aiffFileFormat.getFormat().getChannels() * aiffFileFormat.getFormat().getSampleSizeInBits());
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int aiffLength=bytesWritten;
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int ssndChunkSize=aiffLength-aiffFileFormat.getHeaderSize()+16;
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long dataSize=ssndChunkSize-16;
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int numFrames=(int) (dataSize*8/ssndBlockSize);
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RandomAccessFile raf=new RandomAccessFile(out, "rw");
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// skip FORM magic
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raf.skipBytes(4);
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raf.writeInt(aiffLength-8);
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// skip aiff2 magic, fver chunk, comm magic, comm size, channel count,
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raf.skipBytes(4+aiffFileFormat.getFverChunkSize()+4+4+2);
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// write frame count
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raf.writeInt(numFrames);
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// skip sample size, samplerate, SSND magic
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raf.skipBytes(2+10+4);
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raf.writeInt(ssndChunkSize-8);
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// that's all
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raf.close();
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}
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return bytesWritten;
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}
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// -----------------------------------------------------------------------
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/**
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* Returns the AudioFileFormat describing the file that will be written from this AudioInputStream.
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* Throws IllegalArgumentException if not supported.
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*/
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private AudioFileFormat getAudioFileFormat(AudioFileFormat.Type type, AudioInputStream stream) {
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AudioFormat format = null;
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AiffFileFormat fileFormat = null;
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AudioFormat.Encoding encoding = AudioFormat.Encoding.PCM_SIGNED;
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AudioFormat streamFormat = stream.getFormat();
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AudioFormat.Encoding streamEncoding = streamFormat.getEncoding();
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float sampleRate;
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int sampleSizeInBits;
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int channels;
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int frameSize;
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float frameRate;
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int fileSize;
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boolean convert8to16 = false;
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if( !types[0].equals(type) ) {
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throw new IllegalArgumentException("File type " + type + " not supported.");
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}
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if( (AudioFormat.Encoding.ALAW.equals(streamEncoding)) ||
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(AudioFormat.Encoding.ULAW.equals(streamEncoding)) ) {
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if( streamFormat.getSampleSizeInBits()==8 ) {
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encoding = AudioFormat.Encoding.PCM_SIGNED;
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sampleSizeInBits=16;
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convert8to16 = true;
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} else {
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// can't convert non-8-bit ALAW,ULAW
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throw new IllegalArgumentException("Encoding " + streamEncoding + " supported only for 8-bit data.");
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}
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} else if ( streamFormat.getSampleSizeInBits()==8 ) {
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encoding = AudioFormat.Encoding.PCM_UNSIGNED;
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sampleSizeInBits=8;
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} else {
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encoding = AudioFormat.Encoding.PCM_SIGNED;
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sampleSizeInBits=streamFormat.getSampleSizeInBits();
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}
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format = new AudioFormat( encoding,
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streamFormat.getSampleRate(),
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sampleSizeInBits,
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streamFormat.getChannels(),
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streamFormat.getFrameSize(),
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streamFormat.getFrameRate(),
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true); // AIFF is big endian
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if( stream.getFrameLength()!=AudioSystem.NOT_SPECIFIED ) {
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if( convert8to16 ) {
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fileSize = (int)stream.getFrameLength()*streamFormat.getFrameSize()*2 + AiffFileFormat.AIFF_HEADERSIZE;
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} else {
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fileSize = (int)stream.getFrameLength()*streamFormat.getFrameSize() + AiffFileFormat.AIFF_HEADERSIZE;
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}
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} else {
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fileSize = AudioSystem.NOT_SPECIFIED;
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}
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fileFormat = new AiffFileFormat( AudioFileFormat.Type.AIFF,
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fileSize,
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format,
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(int)stream.getFrameLength() );
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return fileFormat;
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}
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private int writeAiffFile(InputStream in, AiffFileFormat aiffFileFormat, OutputStream out) throws IOException {
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int bytesRead = 0;
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int bytesWritten = 0;
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InputStream fileStream = getFileStream(aiffFileFormat, in);
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byte buffer[] = new byte[bisBufferSize];
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int maxLength = aiffFileFormat.getByteLength();
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while( (bytesRead = fileStream.read( buffer )) >= 0 ) {
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if (maxLength>0) {
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if( bytesRead < maxLength ) {
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out.write( buffer, 0, (int)bytesRead );
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bytesWritten += bytesRead;
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maxLength -= bytesRead;
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} else {
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out.write( buffer, 0, (int)maxLength );
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bytesWritten += maxLength;
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maxLength = 0;
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break;
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}
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} else {
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out.write( buffer, 0, (int)bytesRead );
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bytesWritten += bytesRead;
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}
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}
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return bytesWritten;
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}
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private InputStream getFileStream(AiffFileFormat aiffFileFormat, InputStream audioStream) throws IOException {
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// private method ... assumes aiffFileFormat is a supported file format
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AudioFormat format = aiffFileFormat.getFormat();
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AudioFormat streamFormat = null;
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AudioFormat.Encoding encoding = null;
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//$$fb a little bit nicer handling of constants
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//int headerSize = 54;
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int headerSize = aiffFileFormat.getHeaderSize();
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//int fverChunkSize = 0;
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int fverChunkSize = aiffFileFormat.getFverChunkSize();
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//int commChunkSize = 26;
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int commChunkSize = aiffFileFormat.getCommChunkSize();
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int aiffLength = -1;
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int ssndChunkSize = -1;
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//int ssndOffset = headerSize - 16;
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int ssndOffset = aiffFileFormat.getSsndChunkOffset();
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short channels = (short) format.getChannels();
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short sampleSize = (short) format.getSampleSizeInBits();
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int ssndBlockSize = (channels * sampleSize);
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int numFrames = aiffFileFormat.getFrameLength();
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long dataSize = -1;
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if( numFrames != AudioSystem.NOT_SPECIFIED) {
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dataSize = (long) numFrames * ssndBlockSize / 8;
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ssndChunkSize = (int)dataSize + 16;
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aiffLength = (int)dataSize+headerSize;
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}
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float sampleFramesPerSecond = format.getSampleRate();
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int compCode = AiffFileFormat.AIFC_PCM;
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byte header[] = null;
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ByteArrayInputStream headerStream = null;
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ByteArrayOutputStream baos = null;
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DataOutputStream dos = null;
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SequenceInputStream aiffStream = null;
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InputStream codedAudioStream = audioStream;
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// if we need to do any format conversion, do it here....
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if( audioStream instanceof AudioInputStream ) {
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streamFormat = ((AudioInputStream)audioStream).getFormat();
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encoding = streamFormat.getEncoding();
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// $$jb: Note that AIFF samples are ALWAYS signed
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if( (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ||
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( (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) && !streamFormat.isBigEndian() ) ) {
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// plug in the transcoder to convert to PCM_SIGNED. big endian
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codedAudioStream = AudioSystem.getAudioInputStream( new AudioFormat (
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AudioFormat.Encoding.PCM_SIGNED,
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streamFormat.getSampleRate(),
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streamFormat.getSampleSizeInBits(),
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streamFormat.getChannels(),
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streamFormat.getFrameSize(),
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streamFormat.getFrameRate(),
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true ),
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(AudioInputStream)audioStream );
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} else if( (AudioFormat.Encoding.ULAW.equals(encoding)) ||
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(AudioFormat.Encoding.ALAW.equals(encoding)) ) {
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if( streamFormat.getSampleSizeInBits() != 8 ) {
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throw new IllegalArgumentException("unsupported encoding");
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}
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//$$fb 2001-07-13: this is probably not what we want:
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// writing PCM when ULAW/ALAW is requested. AIFC is able to write ULAW !
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// plug in the transcoder to convert to PCM_SIGNED_BIG_ENDIAN
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codedAudioStream = AudioSystem.getAudioInputStream( new AudioFormat (
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AudioFormat.Encoding.PCM_SIGNED,
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streamFormat.getSampleRate(),
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streamFormat.getSampleSizeInBits() * 2,
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streamFormat.getChannels(),
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streamFormat.getFrameSize() * 2,
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streamFormat.getFrameRate(),
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true ),
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(AudioInputStream)audioStream );
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}
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}
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// Now create an AIFF stream header...
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baos = new ByteArrayOutputStream();
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dos = new DataOutputStream(baos);
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// Write the outer FORM chunk
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dos.writeInt(AiffFileFormat.AIFF_MAGIC);
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dos.writeInt( (aiffLength-8) );
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dos.writeInt(AiffFileFormat.AIFF_MAGIC2);
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// Write a FVER chunk - only for AIFC
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//dos.writeInt(FVER_MAGIC);
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//dos.writeInt( (fverChunkSize-8) );
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//dos.writeInt(FVER_TIMESTAMP);
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// Write a COMM chunk
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dos.writeInt(AiffFileFormat.COMM_MAGIC);
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dos.writeInt( (commChunkSize-8) );
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dos.writeShort(channels);
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dos.writeInt(numFrames);
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dos.writeShort(sampleSize);
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write_ieee_extended(dos, sampleFramesPerSecond); // 10 bytes
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//Only for AIFC
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//dos.writeInt(compCode);
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//dos.writeInt(compCode);
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//dos.writeShort(0);
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// Write the SSND chunk header
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dos.writeInt(AiffFileFormat.SSND_MAGIC);
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dos.writeInt( (ssndChunkSize-8) );
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// ssndOffset and ssndBlockSize set to 0 upon
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// recommendation in "Sound Manager" chapter in
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// "Inside Macintosh Sound", pp 2-87 (from Babu)
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dos.writeInt(0); // ssndOffset
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dos.writeInt(0); // ssndBlockSize
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// Concat this with the audioStream and return it
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dos.close();
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header = baos.toByteArray();
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headerStream = new ByteArrayInputStream( header );
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aiffStream = new SequenceInputStream(headerStream,
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new NoCloseInputStream(codedAudioStream));
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return aiffStream;
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}
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// HELPER METHODS
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private static final int DOUBLE_MANTISSA_LENGTH = 52;
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private static final int DOUBLE_EXPONENT_LENGTH = 11;
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private static final long DOUBLE_SIGN_MASK = 0x8000000000000000L;
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private static final long DOUBLE_EXPONENT_MASK = 0x7FF0000000000000L;
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private static final long DOUBLE_MANTISSA_MASK = 0x000FFFFFFFFFFFFFL;
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private static final int DOUBLE_EXPONENT_OFFSET = 1023;
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private static final int EXTENDED_EXPONENT_OFFSET = 16383;
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private static final int EXTENDED_MANTISSA_LENGTH = 63;
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private static final int EXTENDED_EXPONENT_LENGTH = 15;
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private static final long EXTENDED_INTEGER_MASK = 0x8000000000000000L;
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/**
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* Extended precision IEEE floating-point conversion routine.
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* @argument DataOutputStream
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* @argument double
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* @exception IOException
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*/
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private void write_ieee_extended(DataOutputStream dos, float f) throws IOException {
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/* The special cases NaN, Infinity and Zero are ignored, since
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they do not represent useful sample rates anyway.
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Denormalized number aren't handled, too. Below, there is a cast
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from float to double. We hope that in this conversion,
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numbers are normalized. Numbers that cannot be normalized are
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ignored, too, as they, too, do not represent useful sample rates. */
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long doubleBits = Double.doubleToLongBits((double) f);
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long sign = (doubleBits & DOUBLE_SIGN_MASK)
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>> (DOUBLE_EXPONENT_LENGTH + DOUBLE_MANTISSA_LENGTH);
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long doubleExponent = (doubleBits & DOUBLE_EXPONENT_MASK)
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>> DOUBLE_MANTISSA_LENGTH;
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long doubleMantissa = doubleBits & DOUBLE_MANTISSA_MASK;
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long extendedExponent = doubleExponent - DOUBLE_EXPONENT_OFFSET
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+ EXTENDED_EXPONENT_OFFSET;
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long extendedMantissa = doubleMantissa
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<< (EXTENDED_MANTISSA_LENGTH - DOUBLE_MANTISSA_LENGTH);
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long extendedSign = sign << EXTENDED_EXPONENT_LENGTH;
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short extendedBits79To64 = (short) (extendedSign | extendedExponent);
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long extendedBits63To0 = EXTENDED_INTEGER_MASK | extendedMantissa;
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dos.writeShort(extendedBits79To64);
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dos.writeLong(extendedBits63To0);
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}
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}
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