331 lines
13 KiB
Java
331 lines
13 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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/**
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* AU file writer.
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*
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* @author Jan Borgersen
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*/
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public final class AuFileWriter extends SunFileWriter {
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//$$fb value for length field if length is not known
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public final static int UNKNOWN_SIZE=-1;
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/**
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* Constructs a new AuFileWriter object.
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*/
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public AuFileWriter() {
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super(new AudioFileFormat.Type[]{AudioFileFormat.Type.AU});
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}
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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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// we must know the total data length to calculate the file length
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//$$fb 2001-07-13: fix for bug 4351296: do not throw an exception
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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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// throws IllegalArgumentException if not supported
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AuFileFormat auFileFormat = (AuFileFormat)getAudioFileFormat(fileType, stream);
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int bytesWritten = writeAuFile(stream, auFileFormat, 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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AuFileFormat auFileFormat = (AuFileFormat)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 = writeAuFile(stream, auFileFormat, 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( auFileFormat.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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RandomAccessFile raf=new RandomAccessFile(out, "rw");
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if (raf.length()<=0x7FFFFFFFl) {
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// skip AU magic and data offset field
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raf.skipBytes(8);
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raf.writeInt(bytesWritten-AuFileFormat.AU_HEADERSIZE);
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// that's all
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}
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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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AuFileFormat 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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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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encoding = streamEncoding;
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sampleSizeInBits = streamFormat.getSampleSizeInBits();
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} else if ( streamFormat.getSampleSizeInBits()==8 ) {
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encoding = AudioFormat.Encoding.PCM_SIGNED;
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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); // AU is always big endian
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if( stream.getFrameLength()!=AudioSystem.NOT_SPECIFIED ) {
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fileSize = (int)stream.getFrameLength()*streamFormat.getFrameSize() + AuFileFormat.AU_HEADERSIZE;
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} else {
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fileSize = AudioSystem.NOT_SPECIFIED;
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}
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fileFormat = new AuFileFormat( AudioFileFormat.Type.AU,
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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 InputStream getFileStream(AuFileFormat auFileFormat, InputStream audioStream) throws IOException {
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// private method ... assumes auFileFormat is a supported file type
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AudioFormat format = auFileFormat.getFormat();
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int magic = AuFileFormat.AU_SUN_MAGIC;
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int headerSize = AuFileFormat.AU_HEADERSIZE;
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long dataSize = auFileFormat.getFrameLength();
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//$$fb fix for Bug 4351296
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//int dataSizeInBytes = dataSize * format.getFrameSize();
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long dataSizeInBytes = (dataSize==AudioSystem.NOT_SPECIFIED)?UNKNOWN_SIZE:dataSize * format.getFrameSize();
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if (dataSizeInBytes>0x7FFFFFFFl) {
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dataSizeInBytes=UNKNOWN_SIZE;
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}
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int encoding_local = auFileFormat.getAuType();
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int sampleRate = (int)format.getSampleRate();
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int channels = format.getChannels();
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//$$fb below is the fix for 4297100.
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//boolean bigendian = format.isBigEndian();
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boolean bigendian = true; // force bigendian
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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 auStream = null;
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AudioFormat audioStreamFormat = null;
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AudioFormat.Encoding encoding = 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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codedAudioStream = audioStream;
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if( audioStream instanceof AudioInputStream ) {
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audioStreamFormat = ((AudioInputStream)audioStream).getFormat();
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encoding = audioStreamFormat.getEncoding();
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//$$ fb 2001-07-13: Bug 4391108
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if( (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ||
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(AudioFormat.Encoding.PCM_SIGNED.equals(encoding)
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&& bigendian != audioStreamFormat.isBigEndian()) ) {
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// plug in the transcoder to convert to PCM_SIGNED, bigendian
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// NOTE: little endian AU is not common, so we're always converting
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// to big endian unless the passed in audioFileFormat is little.
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// $$fb this NOTE is superseded. We always write big endian au files, this is by far the standard.
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codedAudioStream = AudioSystem.getAudioInputStream( new AudioFormat (
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AudioFormat.Encoding.PCM_SIGNED,
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audioStreamFormat.getSampleRate(),
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audioStreamFormat.getSampleSizeInBits(),
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audioStreamFormat.getChannels(),
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audioStreamFormat.getFrameSize(),
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audioStreamFormat.getFrameRate(),
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bigendian),
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(AudioInputStream)audioStream );
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}
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}
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baos = new ByteArrayOutputStream();
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dos = new DataOutputStream(baos);
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if (bigendian) {
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dos.writeInt(AuFileFormat.AU_SUN_MAGIC);
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dos.writeInt(headerSize);
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dos.writeInt((int)dataSizeInBytes);
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dos.writeInt(encoding_local);
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dos.writeInt(sampleRate);
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dos.writeInt(channels);
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} else {
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dos.writeInt(AuFileFormat.AU_SUN_INV_MAGIC);
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dos.writeInt(big2little(headerSize));
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dos.writeInt(big2little((int)dataSizeInBytes));
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dos.writeInt(big2little(encoding_local));
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dos.writeInt(big2little(sampleRate));
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dos.writeInt(big2little(channels));
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}
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// Now create a new InputStream from headerStream and the InputStream
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// in audioStream
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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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auStream = new SequenceInputStream(headerStream,
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new NoCloseInputStream(codedAudioStream));
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return auStream;
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}
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private int writeAuFile(InputStream in, AuFileFormat auFileFormat, 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(auFileFormat, in);
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byte buffer[] = new byte[bisBufferSize];
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int maxLength = auFileFormat.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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}
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