/* * Copyright (c) 1999, 2011, 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 * or visit www.oracle.com if you need additional information or have any * questions. */ 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;  /** * 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,                        new NoCloseInputStream(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;    }  }