1 /* 2 * Copyright (c) 2011, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @bug 6660470 27 * @summary Tests that sequencer correctly opens/closes (implicitly) devices 28 * @author Alex Menkov 29 */ 30 31 import java.util.List; 32 import javax.sound.midi.MidiDevice; 33 import javax.sound.midi.MidiDeviceReceiver; 34 import javax.sound.midi.MidiSystem; 35 import javax.sound.midi.MidiUnavailableException; 36 import javax.sound.midi.Receiver; 37 import javax.sound.midi.Sequencer; 38 import javax.sound.midi.Transmitter; 39 40 public class SequencerImplicitSynthOpen { 41 42 static int TEST_COUNT = 5; 43 44 public static void main(String[] args) { 45 try { 46 log("getting sequencer..."); 47 Sequencer sequencer = MidiSystem.getSequencer(); 48 log(" - got " + getDeviceStr(sequencer)); 49 50 // obtain connected device (usually synthesizer) 51 MidiDevice synth = getConnectedDevice(sequencer); 52 if (synth == null) { 53 log("could not get connected device, returning"); 54 return; 55 } 56 57 log("connected device: " + getDeviceStr(synth)); 58 59 int success = 0; 60 for (int i=0; i<TEST_COUNT; i++) { 61 if (test(sequencer)) { 62 success++; 63 } 64 } 65 66 if (success != TEST_COUNT) { 67 throw new RuntimeException("test FAILS"); 68 } 69 } catch (MidiUnavailableException ex) { 70 // this is not a failure 71 log("Could not get Sequencer"); 72 } 73 log("test PASSED."); 74 } 75 76 static boolean test(Sequencer sequencer) throws MidiUnavailableException { 77 log(""); 78 log("opening sequencer..."); 79 sequencer.open(); // opens connected synthesizer implicitly 80 MidiDevice synth = getConnectedDevice(sequencer); 81 log(" connected device: " + getDeviceStr(synth)); 82 83 log("closing sequencer..."); 84 sequencer.close(); // closes the synth implicitly 85 log(" synth is " + getDeviceStr(synth)); 86 MidiDevice synth2 = getConnectedDevice(sequencer); 87 log(" currently connected device: " + getDeviceStr(synth2)); 88 89 if (synth != null && synth.isOpen()) { 90 log("FAIL."); 91 return false; 92 } 93 log("OK."); 94 return true; 95 } 96 97 static MidiDevice getConnectedDevice(Sequencer sequencer) { 98 List<Transmitter> trans = sequencer.getTransmitters(); 99 log(" sequencer has " + trans.size() + " opened transmitters:"); 100 for (Transmitter tr: trans) { 101 Receiver r = tr.getReceiver(); 102 log(" " + getClassStr(tr) + " connected to " + getClassStr(r)); 103 if (r instanceof MidiDeviceReceiver) { 104 MidiDeviceReceiver recv = (MidiDeviceReceiver)r; 105 MidiDevice dev = recv.getMidiDevice(); 106 log(" - receiver of " + getClassStr(dev)); 107 return dev; 108 } else { 109 log(" - does NOT implement MidiDeviceReceiver"); 110 } 111 } 112 return null; 113 } 114 115 static String getClassStr(Object o) { 116 if (o == null) { 117 return "<null>"; 118 } 119 return o.getClass().getName(); 120 } 121 122 static String getDeviceStr(MidiDevice dev) { 123 if (dev == null) { 124 return "NULL"; 125 } 126 return getClassStr(dev) + ", " + (dev.isOpen() ? "OPENED" : "CLOSED"); 127 } 128 129 static void log(String s) { 130 System.out.println(s); 131 } 132 133 }