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    1   /*
    2    * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   
   26   package com.sun.media.sound;
   27   
   28   import java.util.Vector;
   29   import java.io.File;
   30   import java.io.InputStream;
   31   import java.io.OutputStream;
   32   import java.io.IOException;
   33   import java.lang.IllegalArgumentException;
   34   
   35   import java.io.BufferedOutputStream;
   36   import java.io.DataOutputStream;
   37   import java.io.FileOutputStream;
   38   import java.io.ByteArrayInputStream;
   39   import java.io.ByteArrayOutputStream;
   40   import java.io.SequenceInputStream;
   41   
   42   import javax.sound.sampled.AudioFileFormat;
   43   import javax.sound.sampled.AudioInputStream;
   44   import javax.sound.sampled.AudioFormat;
   45   import javax.sound.sampled.AudioSystem;
   46   
   47   
   48   /**
   49    * WAVE file format class.
   50    *
   51    * @author Jan Borgersen
   52    */
   53   
   54   class WaveFileFormat extends AudioFileFormat {
   55   
   56       /**
   57        * Wave format type.
   58        */
   59       private int waveType;
   60   
   61       //$$fb 2001-07-13: added management of header size in this class
   62       //$$fb 2002-04-16: Fix for 4636355: RIFF audio headers could be _more_ spec compliant
   63       private static final int STANDARD_HEADER_SIZE = 28;
   64   
   65       //$$fb 2002-04-16: Fix for 4636355: RIFF audio headers could be _more_ spec compliant
   66       /**
   67        * fmt_ chunk size in bytes
   68        */
   69       private static final int STANDARD_FMT_CHUNK_SIZE = 16;
   70   
   71       // magic numbers
   72       static  final int RIFF_MAGIC         = 1380533830;
   73       static  final int WAVE_MAGIC         = 1463899717;
   74       static  final int FMT_MAGIC                  = 0x666d7420; // "fmt "
   75       static  final int DATA_MAGIC                 = 0x64617461; // "data"
   76   
   77       // encodings
   78       static final int WAVE_FORMAT_UNKNOWN   = 0x0000;
   79       static final int WAVE_FORMAT_PCM       = 0x0001;
   80       static final int WAVE_FORMAT_ADPCM     = 0x0002;
   81       static final int WAVE_FORMAT_ALAW      = 0x0006;
   82       static final int WAVE_FORMAT_MULAW     = 0x0007;
   83       static final int WAVE_FORMAT_OKI_ADPCM = 0x0010;
   84       static final int WAVE_FORMAT_DIGISTD   = 0x0015;
   85       static final int WAVE_FORMAT_DIGIFIX   = 0x0016;
   86       static final int WAVE_IBM_FORMAT_MULAW = 0x0101;
   87       static final int WAVE_IBM_FORMAT_ALAW  = 0x0102;
   88       static final int WAVE_IBM_FORMAT_ADPCM = 0x0103;
   89       static final int WAVE_FORMAT_DVI_ADPCM = 0x0011;
   90       static final int WAVE_FORMAT_SX7383    = 0x1C07;
   91   
   92   
   93       WaveFileFormat( AudioFileFormat aff ) {
   94   
   95           this( aff.getType(), aff.getByteLength(), aff.getFormat(), aff.getFrameLength() );
   96       }
   97   
   98       WaveFileFormat(AudioFileFormat.Type type, int lengthInBytes, AudioFormat format, int lengthInFrames) {
   99   
  100           super(type,lengthInBytes,format,lengthInFrames);
  101   
  102           AudioFormat.Encoding encoding = format.getEncoding();
  103   
  104           if( encoding.equals(AudioFormat.Encoding.ALAW) ) {
  105               waveType = WAVE_FORMAT_ALAW;
  106           } else if( encoding.equals(AudioFormat.Encoding.ULAW) ) {
  107               waveType = WAVE_FORMAT_MULAW;
  108           } else if( encoding.equals(AudioFormat.Encoding.PCM_SIGNED) ||
  109                      encoding.equals(AudioFormat.Encoding.PCM_UNSIGNED) ) {
  110               waveType = WAVE_FORMAT_PCM;
  111           } else {
  112               waveType = WAVE_FORMAT_UNKNOWN;
  113           }
  114       }
  115   
  116       int getWaveType() {
  117   
  118           return waveType;
  119       }
  120   
  121       int getHeaderSize() {
  122           return getHeaderSize(getWaveType());
  123       }
  124   
  125       static int getHeaderSize(int waveType) {
  126           //$$fb 2002-04-16: Fix for 4636355: RIFF audio headers could be _more_ spec compliant
  127           // use dynamic format chunk size
  128           return STANDARD_HEADER_SIZE + getFmtChunkSize(waveType);
  129       }
  130   
  131       static int getFmtChunkSize(int waveType) {
  132           //$$fb 2002-04-16: Fix for 4636355: RIFF audio headers could be _more_ spec compliant
  133           // add 2 bytes for "codec specific data length" for non-PCM codecs
  134           int result = STANDARD_FMT_CHUNK_SIZE;
  135           if (waveType != WAVE_FORMAT_PCM) {
  136               result += 2; // WORD for "codec specific data length"
  137           }
  138           return result;
  139       }
  140   }

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