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 sun.audio;
  27 
  28 /**
  29  * Create a continuous audio stream. This wraps a stream
  30  * around an AudioData object, the stream is restarted
  31  * at the beginning everytime the end is reached, thus
  32  * creating continuous sound.<p>
  33  * For example:
  34  * <pre>
  35  *   AudioData data = AudioData.getAudioData(url);
  36  *   ContinuousAudioDataStream audiostream = new ContinuousAudioDataStream(data);
  37  *   AudioPlayer.player.start(audiostream);
  38  * </pre>
  39  *
  40  * @see AudioPlayer
  41  * @see AudioData
  42  * @author Arthur van Hoff
  43  */
  44 
  45 public final class ContinuousAudioDataStream extends AudioDataStream {
  46 
  47 
  48     /**
  49          * Create a continuous stream of audio.
  50          */
  51         public ContinuousAudioDataStream(AudioData data) {
  52 
  53             super(data);
  54         }
  55 
  56 
  57         public int read() {
  58 
  59             int i = super.read();
  60 
  61             if (i == -1) {
  62                 reset();
  63                 i = super.read();
  64             }
  65 
  66             return i;
  67         }
  68 
  69 
  70         public int read(byte ab[], int i1, int j) {
  71 
  72             int k;
  73 
  74             for (k = 0; k < j; ) {
  75                 int i2 = super.read(ab, i1 + k, j - k);
  76                 if (i2 >= 0) k += i2;
  77                 else reset();
  78             }
  79 
  80             return k;
  81         }
  82     }