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/* * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package com.sun.media.sound; /** * A standard indexed director who chooses performers * by there keyfrom,keyto,velfrom,velto properties. * * @author Karl Helgason */public class ModelStandardIndexedDirector implements ModelDirector {     ModelPerformer[] performers;    ModelDirectedPlayer player;    boolean noteOnUsed = false;    boolean noteOffUsed = false;     // Variables needed for index    byte[][] trantables;    int[] counters;    int[][] mat;     public ModelStandardIndexedDirector(ModelPerformer[] performers,            ModelDirectedPlayer player) {        this.performers = performers;        this.player = player;        for (int i = 0; i < performers.length; i++) {            ModelPerformer p = performers[i];            if (p.isReleaseTriggered()) {                noteOffUsed = true;            } else {                noteOnUsed = true;            }        }        buildindex();    }     private int[] lookupIndex(int x, int y) {        if ((x >= 0) && (x < 128) && (y >= 0) && (y < 128)) {            int xt = trantables[0][x];            int yt = trantables[1][y];            if (xt != -1 && yt != -1) {                return mat[xt + yt * counters[0]];            }        }        return null;    }     private int restrict(int value) {        if(value < 0) return 0;        if(value > 127) return 127;        return value;    }     private void buildindex() {        trantables = new byte[2][129];        counters = new int[trantables.length];        for (ModelPerformer performer : performers) {            int keyFrom = performer.getKeyFrom();            int keyTo = performer.getKeyTo();            int velFrom = performer.getVelFrom();            int velTo = performer.getVelTo();            if (keyFrom > keyTo) continue;            if (velFrom > velTo) continue;            keyFrom = restrict(keyFrom);            keyTo = restrict(keyTo);            velFrom = restrict(velFrom);            velTo = restrict(velTo);            trantables[0][keyFrom] = 1;            trantables[0][keyTo + 1] = 1;            trantables[1][velFrom] = 1;            trantables[1][velTo + 1] = 1;        }        for (int d = 0; d < trantables.length; d++) {            byte[] trantable = trantables[d];            int transize = trantable.length;            for (int i = transize - 1; i >= 0; i--) {                if (trantable[i] == 1) {                    trantable[i] = -1;                    break;                }                trantable[i] = -1;            }            int counter = -1;            for (int i = 0; i < transize; i++) {                if (trantable[i] != 0) {                    counter++;                    if (trantable[i] == -1)                        break;                }                trantable[i] = (byte) counter;            }            counters[d] = counter;        }        mat = new int[counters[0] * counters[1]][];        int ix = 0;        for (ModelPerformer performer : performers) {            int keyFrom = performer.getKeyFrom();            int keyTo = performer.getKeyTo();            int velFrom = performer.getVelFrom();            int velTo = performer.getVelTo();            if (keyFrom > keyTo) continue;            if (velFrom > velTo) continue;            keyFrom = restrict(keyFrom);            keyTo = restrict(keyTo);            velFrom = restrict(velFrom);            velTo = restrict(velTo);            int x_from = trantables[0][keyFrom];            int x_to = trantables[0][keyTo + 1];            int y_from = trantables[1][velFrom];            int y_to = trantables[1][velTo + 1];            if (x_to == -1)                x_to = counters[0];            if (y_to == -1)                y_to = counters[1];            for (int y = y_from; y < y_to; y++) {                int i = x_from + y * counters[0];                for (int x = x_from; x < x_to; x++) {                    int[] mprev = mat[i];                    if (mprev == null) {                        mat[i] = new int[] { ix };                    } else {                        int[] mnew = new int[mprev.length + 1];                        mnew[mnew.length - 1] = ix;                        for (int k = 0; k < mprev.length; k++)                            mnew[k] = mprev[k];                        mat[i] = mnew;                    }                    i++;                }            }            ix++;        }    }     public void close() {    }     public void noteOff(int noteNumber, int velocity) {        if (!noteOffUsed)            return;        int[] plist = lookupIndex(noteNumber, velocity);        if(plist == null) return;        for (int i : plist) {            ModelPerformer p = performers[i];            if (p.isReleaseTriggered()) {                player.play(i, null);            }        }    }     public void noteOn(int noteNumber, int velocity) {        if (!noteOnUsed)            return;        int[] plist = lookupIndex(noteNumber, velocity);        if(plist == null) return;        for (int i : plist) {            ModelPerformer p = performers[i];            if (!p.isReleaseTriggered()) {                player.play(i, null);            }        }    }}