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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.io.InputStream;
   29   
   30   import javax.sound.sampled.AudioFormat;
   31   import javax.sound.sampled.AudioInputStream;
   32   
   33   import javax.sound.sampled.spi.FormatConversionProvider;
   34   
   35   
   36   /**
   37    * A codec can encode and/or decode audio data.  It provides an
   38    * AudioInputStream from which processed data may be read.
   39    * <p>
   40    * Its input format represents the format of the incoming
   41    * audio data, or the format of the data in the underlying stream.
   42    * <p>
   43    * Its output format represents the format of the processed, outgoing
   44    * audio data.  This is the format of the data which may be read from
   45    * the filtered stream.
   46    *
   47    * @author Kara Kytle
   48    */
   49   abstract class SunCodec extends FormatConversionProvider {
   50   
   51       AudioFormat.Encoding[] inputEncodings;
   52       AudioFormat.Encoding[] outputEncodings;
   53   
   54       /**
   55        * Constructs a new codec object.
   56        */
   57       protected SunCodec(AudioFormat.Encoding[] inputEncodings, AudioFormat.Encoding[] outputEncodings) {
   58   
   59           this.inputEncodings = inputEncodings;
   60           this.outputEncodings = outputEncodings;
   61       }
   62   
   63   
   64       /**
   65        */
   66       public AudioFormat.Encoding[] getSourceEncodings() {
   67   
   68           AudioFormat.Encoding[] encodings = new AudioFormat.Encoding[inputEncodings.length];
   69           System.arraycopy(inputEncodings, 0, encodings, 0, inputEncodings.length);
   70           return encodings;
   71       }
   72       /**
   73        */
   74       public AudioFormat.Encoding[] getTargetEncodings() {
   75   
   76           AudioFormat.Encoding[] encodings = new AudioFormat.Encoding[outputEncodings.length];
   77           System.arraycopy(outputEncodings, 0, encodings, 0, outputEncodings.length);
   78           return encodings;
   79       }
   80   
   81       /**
   82        */
   83       public abstract AudioFormat.Encoding[] getTargetEncodings(AudioFormat sourceFormat);
   84   
   85   
   86       /**
   87        */
   88       public abstract AudioFormat[] getTargetFormats(AudioFormat.Encoding targetEncoding, AudioFormat sourceFormat);
   89   
   90   
   91       /**
   92        */
   93       public abstract AudioInputStream getAudioInputStream(AudioFormat.Encoding targetEncoding, AudioInputStream sourceStream);
   94       /**
   95        */
   96       public abstract AudioInputStream getAudioInputStream(AudioFormat targetFormat, AudioInputStream sourceStream);
   97   
   98   
   99   }

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