/*

 * 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

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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);

    }

}