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.util.Arrays;
  28 
  29 /**
  30  * Connection blocks are used to connect source variable
  31  * to a destination variable.
  32  * For example Note On velocity can be connected to output gain.
  33  * In DLS this is called articulator and in SoundFonts (SF2) a modulator.
  34  *
  35  * @author Karl Helgason
  36  */
  37 public final class ModelConnectionBlock {
  38 
  39     //
  40     //   source1 * source2 * scale -> destination
  41     //
  42     private static final ModelSource[] no_sources = new ModelSource[0];
  43     private ModelSource[] sources = no_sources;
  44     private double scale = 1;
  45     private ModelDestination destination;
  46 
  47     public ModelConnectionBlock() {
  48     }
  49 
  50     public ModelConnectionBlock(double scale, ModelDestination destination) {
  51         this.scale = scale;
  52         this.destination = destination;
  53     }
  54 
  55     public ModelConnectionBlock(ModelSource source,
  56             ModelDestination destination) {
  57         if (source != null) {
  58             this.sources = new ModelSource[1];
  59             this.sources[0] = source;
  60         }
  61         this.destination = destination;
  62     }
  63 
  64     public ModelConnectionBlock(ModelSource source, double scale,
  65             ModelDestination destination) {
  66         if (source != null) {
  67             this.sources = new ModelSource[1];
  68             this.sources[0] = source;
  69         }
  70         this.scale = scale;
  71         this.destination = destination;
  72     }
  73 
  74     public ModelConnectionBlock(ModelSource source, ModelSource control,
  75             ModelDestination destination) {
  76         if (source != null) {
  77             if (control == null) {
  78                 this.sources = new ModelSource[1];
  79                 this.sources[0] = source;
  80             } else {
  81                 this.sources = new ModelSource[2];
  82                 this.sources[0] = source;
  83                 this.sources[1] = control;
  84             }
  85         }
  86         this.destination = destination;
  87     }
  88 
  89     public ModelConnectionBlock(ModelSource source, ModelSource control,
  90             double scale, ModelDestination destination) {
  91         if (source != null) {
  92             if (control == null) {
  93                 this.sources = new ModelSource[1];
  94                 this.sources[0] = source;
  95             } else {
  96                 this.sources = new ModelSource[2];
  97                 this.sources[0] = source;
  98                 this.sources[1] = control;
  99             }
 100         }
 101         this.scale = scale;
 102         this.destination = destination;
 103     }
 104 
 105     public ModelDestination getDestination() {
 106         return destination;
 107     }
 108 
 109     public void setDestination(ModelDestination destination) {
 110         this.destination = destination;
 111     }
 112 
 113     public double getScale() {
 114         return scale;
 115     }
 116 
 117     public void setScale(double scale) {
 118         this.scale = scale;
 119     }
 120 
 121     public ModelSource[] getSources() {
 122         return Arrays.copyOf(sources, sources.length);
 123     }
 124 
 125     public void setSources(ModelSource[] source) {
 126         this.sources = source == null ? no_sources : Arrays.copyOf(source, source.length);
 127     }
 128 
 129     public void addSource(ModelSource source) {
 130         ModelSource[] oldsources = sources;
 131         sources = new ModelSource[oldsources.length + 1];
 132         System.arraycopy(oldsources, 0, sources, 0, oldsources.length);
 133         sources[sources.length - 1] = source;
 134     }
 135 }