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    1   /*
    2    * Copyright (c) 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   package com.sun.media.sound;
   26   
   27   import javax.sound.midi.MidiChannel;
   28   
   29   /**
   30    * ModelChannelMixer is used to process channel voice mix output before going
   31    * to master output.<br>
   32    * It can be used to:<br>
   33    * <ul>
   34    *   <li>Implement non-voice oriented instruments.</li>
   35    *   <li>Add insert effect to instruments; for example distortion effect.</li>
   36    * </ui>
   37    * <p>
   38    * <b>Warning! Classes that implements ModelChannelMixer must be thread-safe.</b>
   39    *
   40    * @author Karl Helgason
   41    */
   42   public interface ModelChannelMixer extends MidiChannel {
   43   
   44       // Used to process input audio from voices mix.
   45       public boolean process(float[][] buffer, int offset, int len);
   46   
   47       // Is used to trigger that this mixer is not be used
   48       // and it should fade out.
   49       public void stop();
   50   }

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