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/* * Copyright (c) 2007, 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; import java.util.TreeMap; import javax.sound.midi.MidiDevice;import javax.sound.midi.MidiDeviceReceiver;import javax.sound.midi.MidiMessage;import javax.sound.midi.ShortMessage; /** * Software synthesizer MIDI receiver class. * * @author Karl Helgason */public class SoftReceiver implements MidiDeviceReceiver {     protected boolean open = true;    private Object control_mutex;    private SoftSynthesizer synth;    protected TreeMap<Long, Object> midimessages;    protected SoftMainMixer mainmixer;     public SoftReceiver(SoftSynthesizer synth) {        this.control_mutex = synth.control_mutex;        this.synth = synth;        this.mainmixer = synth.getMainMixer();        if (mainmixer != null)            this.midimessages = mainmixer.midimessages;    }     public MidiDevice getMidiDevice() {        return synth;    }     public void send(MidiMessage message, long timeStamp) {         synchronized (control_mutex) {            if (!open)                throw new IllegalStateException("Receiver is not open");        }         if (timeStamp != -1) {            synchronized (control_mutex) {                mainmixer.activity();                while (midimessages.get(timeStamp) != null)                    timeStamp++;                if (message instanceof ShortMessage                        && (((ShortMessage)message).getChannel() > 0xF)) {                    midimessages.put(timeStamp, message.clone());                } else {                    midimessages.put(timeStamp, message.getMessage());                }            }        } else {            mainmixer.processMessage(message);        }    }     public void close() {        synchronized (control_mutex) {            open = false;        }        synth.removeReceiver(this);    }}