/*

 * 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.

 *

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package com.sun.media.sound;

import javax.sound.midi.*;

/**

 * Helper class which allows to convert {@code Transmitter}

 * to {@code MidiDeviceTransmitter}.

 *

 * @author Alex Menkov

 */

public class MidiDeviceTransmitterEnvelope implements MidiDeviceTransmitter {

    private final MidiDevice device;

    private final Transmitter transmitter;

    /**

     * Creates a new {@code MidiDeviceTransmitterEnvelope} object which

     * envelops the specified {@code Transmitter}

     * and is owned by the specified {@code MidiDevice}.

     *

     * @param device the owner {@code MidiDevice}

     * @param transmitter the {@code Transmitter} to be enveloped

     */

    public MidiDeviceTransmitterEnvelope(MidiDevice device, Transmitter transmitter) {

        if (device == null || transmitter == null) {

            throw new NullPointerException();

        }

        this.device = device;

        this.transmitter = transmitter;

    }

    // Transmitter implementation

    public void setReceiver(Receiver receiver) {

        transmitter.setReceiver(receiver);

    }

    public Receiver getReceiver() {

        return transmitter.getReceiver();

    }

    public void close() {

        transmitter.close();

    }

    // MidiDeviceReceiver implementation

    public MidiDevice getMidiDevice() {

        return device;

    }

    /**

     * Obtains the transmitter enveloped

     * by this {@code MidiDeviceTransmitterEnvelope} object.

     *

     * @return the enveloped transmitter

     */

    public Transmitter getTransmitter() {

        return transmitter;

    }

}