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 26 package com.sun.media.sound; 27 28 import javax.sound.midi.MidiDevice; 29 import javax.sound.midi.MidiDeviceReceiver; 30 import javax.sound.midi.MidiMessage; 31 import javax.sound.midi.Receiver; 32 33 /** 34 * Helper class which allows to convert {@code Receiver} 35 * to {@code MidiDeviceReceiver}. 36 * 37 * @author Alex Menkov 38 */ 39 public final class MidiDeviceReceiverEnvelope implements MidiDeviceReceiver { 40 41 private final MidiDevice device; 42 private final Receiver receiver; 43 44 /** 45 * Creates a new {@code MidiDeviceReceiverEnvelope} object which 46 * envelops the specified {@code Receiver} 47 * and is owned by the specified {@code MidiDevice}. 48 * 49 * @param device the owner {@code MidiDevice} 50 * @param receiver the {@code Receiver} to be enveloped 51 */ 52 public MidiDeviceReceiverEnvelope(MidiDevice device, Receiver receiver) { 53 if (device == null || receiver == null) { 54 throw new NullPointerException(); 55 } 56 this.device = device; 57 this.receiver = receiver; 58 } 59 60 // Receiver implementation 61 @Override 62 public void close() { 63 receiver.close(); 64 } 65 66 @Override 67 public void send(MidiMessage message, long timeStamp) { 68 receiver.send(message, timeStamp); 69 } 70 71 // MidiDeviceReceiver implementation 72 @Override 73 public MidiDevice getMidiDevice() { 74 return device; 75 } 76 77 /** 78 * Obtains the receiver enveloped 79 * by this {@code MidiDeviceReceiverEnvelope} object. 80 * 81 * @return the enveloped receiver 82 */ 83 public Receiver getReceiver() { 84 return receiver; 85 } 86 }