1 /*

     2  * Copyright (c) 2010, 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 javax.sound.midi.*;

    28 

    29 

    30 /**

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

    32  * to {@code MidiDeviceTransmitter}.

    33  *

    34  * @author Alex Menkov

    35  */

    36 public final class MidiDeviceTransmitterEnvelope implements MidiDeviceTransmitter {

    37 

    38     private final MidiDevice device;

    39     private final Transmitter transmitter;

    40 

    41     /**

    42      * Creates a new {@code MidiDeviceTransmitterEnvelope} object which

    43      * envelops the specified {@code Transmitter}

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

    45      *

    46      * @param device the owner {@code MidiDevice}

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

    48      */

    49     public MidiDeviceTransmitterEnvelope(MidiDevice device, Transmitter transmitter) {

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

    51             throw new NullPointerException();

    52         }

    53         this.device = device;

    54         this.transmitter = transmitter;

    55     }

    56 

    57     // Transmitter implementation

    58     public void setReceiver(Receiver receiver) {

    59         transmitter.setReceiver(receiver);

    60     }

    61 

    62     public Receiver getReceiver() {

    63         return transmitter.getReceiver();

    64     }

    65 

    66     public void close() {

    67         transmitter.close();

    68     }

    69 

    70 

    71     // MidiDeviceReceiver implementation

    72     public MidiDevice getMidiDevice() {

    73         return device;

    74     }

    75 

    76     /**

    77      * Obtains the transmitter enveloped

    78      * by this {@code MidiDeviceTransmitterEnvelope} object.

    79      *

    80      * @return the enveloped transmitter

    81      */

    82     public Transmitter getTransmitter() {

    83         return transmitter;

    84     }

    85 }