1 /*

     2  * Copyright (c) 2003, 2016, 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 import javax.sound.midi.MidiDevice;

    25 import javax.sound.midi.MidiSystem;

    26 import javax.sound.midi.Sequencer;

    27 import javax.sound.midi.Synthesizer;

    28 

    29 /**

    30  * @test

    31  * @bug 4914667

    32  * @summary Closing and reopening MIDI IN device on Linux throws

    33  *          MidiUnavailableException

    34  */

    35 public class Reopen {

    36 

    37     private static boolean isTestExecuted;

    38     private static boolean isTestPassed;

    39 

    40     /*

    41      * run manually:

    42      * java Reopen 100 in      for 100 iterations on the MIDI IN device

    43      * java Reopen 16 out      for 16 iterations on the MIDI OUT device

    44      */

    45     public static void main(String[] args) throws Exception {

    46         if (args.length == 0) {

    47             doAllTests();

    48         } else if (args.length == 2) {

    49             int numIterations = Integer.parseInt(args[0]);

    50             if (args[1].equals("in")) {

    51                 doTest(numIterations, true);

    52             } else {

    53                 doTest(numIterations, false);

    54             }

    55         } else {

    56             out("usage: java Reopen <iterations> in|out");

    57         }

    58     }

    59 

    60     private static void doAllTests() throws Exception {

    61         out("#4914667: Closing and reopening MIDI IN device on Linux throws MidiUnavailableException");

    62         boolean success = true;

    63         try {

    64             success &= doTest(20, true); // MIDI IN

    65             success &= doTest(20, false); // MIDI OUT

    66             isTestExecuted = true;

    67         } catch (Exception e) {

    68             out(e);

    69             isTestExecuted = false;

    70         }

    71         isTestPassed = success;

    72         if (isTestExecuted) {

    73             if (isTestPassed) {

    74                 out("Test PASSED.");

    75             } else {

    76                 throw new Exception("Test FAILED.");

    77             }

    78         } else {

    79             out("Test NOT FAILED");

    80         }

    81     }

    82 

    83     private static boolean doTest(int numIterations, boolean input) throws Exception {

    84         MidiDevice.Info[] infos = MidiSystem.getMidiDeviceInfo();

    85         MidiDevice outDevice = null;

    86         MidiDevice inDevice = null;

    87         for (int i = 0; i < infos.length; i++) {

    88             MidiDevice device = MidiSystem.getMidiDevice(infos[i]);

    89             if (! (device instanceof Sequencer) &&

    90                 ! (device instanceof Synthesizer)) {

    91                 if (device.getMaxReceivers() != 0) {

    92                     outDevice = device;

    93                 }

    94                 if (device.getMaxTransmitters() != 0) {

    95                     inDevice = device;

    96                 }

    97             }

    98         }

    99         MidiDevice testDevice = null;

   100         if (input) {

   101             testDevice = inDevice;

   102         } else {

   103             testDevice = outDevice;

   104         }

   105         if (testDevice == null) {

   106             out("Cannot test: device not available.");

   107             return true;

   108         }

   109         out("Using Device: " + testDevice);

   110 

   111         for (int i = 0; i < numIterations; i++) {

   112             out("@@@ ITERATION: " + i);

   113             testDevice.open();

   114             // This sleep ensures that the thread of MidiInDevice is started.

   115             sleep(50);

   116             testDevice.close();

   117         }

   118         return true;

   119     }

   120 

   121     private static void sleep(int milliseconds) {

   122         try {

   123             Thread.sleep(milliseconds);

   124         } catch (InterruptedException e) {

   125         }

   126     }

   127 

   128     private static void out(Throwable t) {

   129         t.printStackTrace(System.out);

   130     }

   131 

   132     private static void out(String message) {

   133         System.out.println(message);

   134     }

   135 }