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src/java.desktop/share/classes/com/sun/media/sound/WaveFloatFileReader.java

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   1 /*
   2  * Copyright (c) 2007, 2013, 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 package com.sun.media.sound;
  26 
  27 import java.io.BufferedInputStream;
  28 import java.io.File;
  29 import java.io.FileInputStream;
  30 import java.io.IOException;
  31 import java.io.InputStream;
  32 import java.net.URL;
  33 
  34 import javax.sound.sampled.AudioFileFormat;
  35 import javax.sound.sampled.AudioFormat;
  36 import javax.sound.sampled.AudioFormat.Encoding;
  37 import javax.sound.sampled.AudioInputStream;
  38 import javax.sound.sampled.AudioSystem;
  39 import javax.sound.sampled.UnsupportedAudioFileException;
  40 import javax.sound.sampled.spi.AudioFileReader;
  41 
  42 /**
  43  * Floating-point encoded (format 3) WAVE file loader.
  44  *
  45  * @author Karl Helgason
  46  */
  47 public final class WaveFloatFileReader extends AudioFileReader {
  48 
  49     public AudioFileFormat getAudioFileFormat(InputStream stream)
  50             throws UnsupportedAudioFileException, IOException {
  51 
  52         stream.mark(200);
  53         AudioFileFormat format;
  54         try {
  55             format = internal_getAudioFileFormat(stream);
  56         } finally {
  57             stream.reset();
  58         }
  59         return format;
  60     }
  61 
  62     private AudioFileFormat internal_getAudioFileFormat(InputStream stream)
  63             throws UnsupportedAudioFileException, IOException {
  64 
  65         RIFFReader riffiterator = new RIFFReader(stream);
  66         if (!riffiterator.getFormat().equals("RIFF"))
  67             throw new UnsupportedAudioFileException();
  68         if (!riffiterator.getType().equals("WAVE"))
  69             throw new UnsupportedAudioFileException();
  70 
  71         boolean fmt_found = false;
  72         boolean data_found = false;
  73 
  74         int channels = 1;
  75         long samplerate = 1;
  76         int framesize = 1;
  77         int bits = 1;
  78 
  79         while (riffiterator.hasNextChunk()) {
  80             RIFFReader chunk = riffiterator.nextChunk();
  81 
  82             if (chunk.getFormat().equals("fmt ")) {
  83                 fmt_found = true;
  84 
  85                 int format = chunk.readUnsignedShort();
  86                 if (format != 3) // WAVE_FORMAT_IEEE_FLOAT only
  87                     throw new UnsupportedAudioFileException();
  88                 channels = chunk.readUnsignedShort();
  89                 samplerate = chunk.readUnsignedInt();
  90                 /* framerate = */chunk.readUnsignedInt();
  91                 framesize = chunk.readUnsignedShort();
  92                 bits = chunk.readUnsignedShort();
  93             }
  94             if (chunk.getFormat().equals("data")) {
  95                 data_found = true;
  96                 break;
  97             }
  98         }
  99 
 100         if (!fmt_found)
 101             throw new UnsupportedAudioFileException();
 102         if (!data_found)
 103             throw new UnsupportedAudioFileException();
 104 
 105         AudioFormat audioformat = new AudioFormat(
 106                 Encoding.PCM_FLOAT, samplerate, bits, channels,
 107                 framesize, samplerate, false);
 108         AudioFileFormat fileformat = new AudioFileFormat(
 109                 AudioFileFormat.Type.WAVE, audioformat,
 110                 AudioSystem.NOT_SPECIFIED);
 111         return fileformat;
 112     }
 113 
 114     public AudioInputStream getAudioInputStream(InputStream stream)

 115             throws UnsupportedAudioFileException, IOException {
 116 
 117         AudioFileFormat format = getAudioFileFormat(stream);



 118         RIFFReader riffiterator = new RIFFReader(stream);
 119         if (!riffiterator.getFormat().equals("RIFF"))
 120             throw new UnsupportedAudioFileException();
 121         if (!riffiterator.getType().equals("WAVE"))
 122             throw new UnsupportedAudioFileException();
 123         while (riffiterator.hasNextChunk()) {
 124             RIFFReader chunk = riffiterator.nextChunk();
 125             if (chunk.getFormat().equals("data")) {
 126                 return new AudioInputStream(chunk, format.getFormat(),
 127                         chunk.getSize());
 128             }
 129         }
 130         throw new UnsupportedAudioFileException();
 131     }
 132 
 133     public AudioFileFormat getAudioFileFormat(URL url)
 134             throws UnsupportedAudioFileException, IOException {
 135         InputStream stream = url.openStream();
 136         AudioFileFormat format;
 137         try {
 138             format = getAudioFileFormat(new BufferedInputStream(stream));
 139         } finally {
 140             stream.close();
 141         }
 142         return format;
 143     }
 144 
 145     public AudioFileFormat getAudioFileFormat(File file)
 146             throws UnsupportedAudioFileException, IOException {
 147         InputStream stream = new FileInputStream(file);
 148         AudioFileFormat format;
 149         try {
 150             format = getAudioFileFormat(new BufferedInputStream(stream));
 151         } finally {
 152             stream.close();
 153         }
 154         return format;
 155     }
 156 
 157     public AudioInputStream getAudioInputStream(URL url)
 158             throws UnsupportedAudioFileException, IOException {
 159         return getAudioInputStream(new BufferedInputStream(url.openStream()));
 160     }
 161 
 162     public AudioInputStream getAudioInputStream(File file)
 163             throws UnsupportedAudioFileException, IOException {
 164         return getAudioInputStream(new BufferedInputStream(new FileInputStream(
 165                 file)));
 166     }
 167 }
   1 /*
   2  * Copyright (c) 2007, 2015, 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.io.IOException;
  29 import java.io.InputStream;

  30 
  31 import javax.sound.sampled.AudioFileFormat;
  32 import javax.sound.sampled.AudioFormat;
  33 import javax.sound.sampled.AudioFormat.Encoding;
  34 import javax.sound.sampled.AudioInputStream;
  35 import javax.sound.sampled.AudioSystem;
  36 import javax.sound.sampled.UnsupportedAudioFileException;

  37 
  38 /**
  39  * Floating-point encoded (format 3) WAVE file loader.
  40  *
  41  * @author Karl Helgason
  42  */
  43 public final class WaveFloatFileReader extends SunFileReader {
  44 
  45     @Override
  46     AudioFileFormat getAudioFileFormatImpl(final InputStream stream)












  47             throws UnsupportedAudioFileException, IOException {
  48 
  49         RIFFReader riffiterator = new RIFFReader(stream);
  50         if (!riffiterator.getFormat().equals("RIFF"))
  51             throw new UnsupportedAudioFileException();
  52         if (!riffiterator.getType().equals("WAVE"))
  53             throw new UnsupportedAudioFileException();
  54 
  55         boolean fmt_found = false;
  56         boolean data_found = false;
  57 
  58         int channels = 1;
  59         long samplerate = 1;
  60         int framesize = 1;
  61         int bits = 1;
  62 
  63         while (riffiterator.hasNextChunk()) {
  64             RIFFReader chunk = riffiterator.nextChunk();
  65 
  66             if (chunk.getFormat().equals("fmt ")) {
  67                 fmt_found = true;
  68 
  69                 int format = chunk.readUnsignedShort();
  70                 if (format != 3) // WAVE_FORMAT_IEEE_FLOAT only
  71                     throw new UnsupportedAudioFileException();
  72                 channels = chunk.readUnsignedShort();
  73                 samplerate = chunk.readUnsignedInt();
  74                 /* framerate = */chunk.readUnsignedInt();
  75                 framesize = chunk.readUnsignedShort();
  76                 bits = chunk.readUnsignedShort();
  77             }
  78             if (chunk.getFormat().equals("data")) {
  79                 data_found = true;
  80                 break;
  81             }
  82         }
  83         if (!fmt_found || !data_found) {

  84             throw new UnsupportedAudioFileException();
  85         }


  86         AudioFormat audioformat = new AudioFormat(
  87                 Encoding.PCM_FLOAT, samplerate, bits, channels,
  88                 framesize, samplerate, false);
  89         return new AudioFileFormat(AudioFileFormat.Type.WAVE, audioformat,

  90                                    AudioSystem.NOT_SPECIFIED);

  91     }
  92 
  93     @Override
  94     public AudioInputStream getAudioInputStream(final InputStream stream)
  95             throws UnsupportedAudioFileException, IOException {
  96 
  97         AudioFileFormat format = getAudioFileFormat(stream);
  98         // we've got everything, the stream is supported and it is at the
  99         // beginning of the header, so find the data chunk again and return an
 100         // AudioInputStream
 101         RIFFReader riffiterator = new RIFFReader(stream);




 102         while (riffiterator.hasNextChunk()) {
 103             RIFFReader chunk = riffiterator.nextChunk();
 104             if (chunk.getFormat().equals("data")) {
 105                 return new AudioInputStream(chunk, format.getFormat(),
 106                         chunk.getSize());
 107             }
 108         }
 109         throw new UnsupportedAudioFileException();
 110     }



































 111 }
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