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

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   1 /*
   2  * Copyright (c) 1999, 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 
  26 package com.sun.media.sound;
  27 
  28 import java.io.IOException;

  29 import java.util.Vector;
  30 
  31 import javax.sound.sampled.AudioFormat;
  32 import javax.sound.sampled.AudioInputStream;
  33 import javax.sound.sampled.AudioSystem;
  34 
  35 
  36 /**
  37  * Converts among signed/unsigned and little/big endianness of sampled.
  38  *
  39  * @author Jan Borgersen
  40  */
  41 public final class PCMtoPCMCodec extends SunCodec {
  42 
  43 
  44     private static final AudioFormat.Encoding[] inputEncodings = {
  45         AudioFormat.Encoding.PCM_SIGNED,
  46         AudioFormat.Encoding.PCM_UNSIGNED,
  47     };
  48 


  70     /**
  71      */
  72     public AudioFormat.Encoding[] getTargetEncodings(AudioFormat sourceFormat){
  73 
  74         if( sourceFormat.getEncoding().equals( AudioFormat.Encoding.PCM_SIGNED ) ||
  75             sourceFormat.getEncoding().equals( AudioFormat.Encoding.PCM_UNSIGNED ) ) {
  76 
  77                 AudioFormat.Encoding encs[] = new AudioFormat.Encoding[2];
  78                 encs[0] = AudioFormat.Encoding.PCM_SIGNED;
  79                 encs[1] = AudioFormat.Encoding.PCM_UNSIGNED;
  80                 return encs;
  81             } else {
  82                 return new AudioFormat.Encoding[0];
  83             }
  84     }
  85 
  86 
  87     /**
  88      */
  89     public AudioFormat[] getTargetFormats(AudioFormat.Encoding targetEncoding, AudioFormat sourceFormat){

  90 
  91         // filter out targetEncoding from the old getOutputFormats( sourceFormat ) method
  92 
  93         AudioFormat[] formats = getOutputFormats( sourceFormat );
  94         Vector<AudioFormat> newFormats = new Vector<>();
  95         for(int i=0; i<formats.length; i++ ) {
  96             if( formats[i].getEncoding().equals( targetEncoding ) ) {
  97                 newFormats.addElement( formats[i] );
  98             }
  99         }
 100 
 101         AudioFormat[] formatArray = new AudioFormat[newFormats.size()];
 102 
 103         for (int i = 0; i < formatArray.length; i++) {
 104             formatArray[i] = newFormats.elementAt(i);
 105         }
 106 
 107         return formatArray;
 108     }
 109 


   1 /*
   2  * Copyright (c) 1999, 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.util.Objects;
  30 import java.util.Vector;
  31 
  32 import javax.sound.sampled.AudioFormat;
  33 import javax.sound.sampled.AudioInputStream;
  34 import javax.sound.sampled.AudioSystem;
  35 
  36 
  37 /**
  38  * Converts among signed/unsigned and little/big endianness of sampled.
  39  *
  40  * @author Jan Borgersen
  41  */
  42 public final class PCMtoPCMCodec extends SunCodec {
  43 
  44 
  45     private static final AudioFormat.Encoding[] inputEncodings = {
  46         AudioFormat.Encoding.PCM_SIGNED,
  47         AudioFormat.Encoding.PCM_UNSIGNED,
  48     };
  49 


  71     /**
  72      */
  73     public AudioFormat.Encoding[] getTargetEncodings(AudioFormat sourceFormat){
  74 
  75         if( sourceFormat.getEncoding().equals( AudioFormat.Encoding.PCM_SIGNED ) ||
  76             sourceFormat.getEncoding().equals( AudioFormat.Encoding.PCM_UNSIGNED ) ) {
  77 
  78                 AudioFormat.Encoding encs[] = new AudioFormat.Encoding[2];
  79                 encs[0] = AudioFormat.Encoding.PCM_SIGNED;
  80                 encs[1] = AudioFormat.Encoding.PCM_UNSIGNED;
  81                 return encs;
  82             } else {
  83                 return new AudioFormat.Encoding[0];
  84             }
  85     }
  86 
  87 
  88     /**
  89      */
  90     public AudioFormat[] getTargetFormats(AudioFormat.Encoding targetEncoding, AudioFormat sourceFormat){
  91         Objects.requireNonNull(targetEncoding);
  92 
  93         // filter out targetEncoding from the old getOutputFormats( sourceFormat ) method
  94 
  95         AudioFormat[] formats = getOutputFormats( sourceFormat );
  96         Vector<AudioFormat> newFormats = new Vector<>();
  97         for(int i=0; i<formats.length; i++ ) {
  98             if( formats[i].getEncoding().equals( targetEncoding ) ) {
  99                 newFormats.addElement( formats[i] );
 100             }
 101         }
 102 
 103         AudioFormat[] formatArray = new AudioFormat[newFormats.size()];
 104 
 105         for (int i = 0; i < formatArray.length; i++) {
 106             formatArray[i] = newFormats.elementAt(i);
 107         }
 108 
 109         return formatArray;
 110     }
 111 


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