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 * 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.

 *

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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import java.io.ByteArrayInputStream;

import java.io.InputStream;

import javax.sound.sampled.AudioFormat;

import javax.sound.sampled.AudioInputStream;

import javax.sound.sampled.AudioSystem;

import javax.sound.sampled.Clip;

import javax.sound.sampled.DataLine;

import javax.sound.sampled.LineEvent;

import javax.sound.sampled.LineListener;

/**

 * @test

 * @bug 4498848

 * @summary Sound causes crashes on Linux (part 1)

 */

public class ClipLinuxCrash {

    static Clip clip;

    public static long bytes2Ms(long bytes, AudioFormat format) {

        return (long) (bytes / format.getFrameRate() * 1000

                               / format.getFrameSize());

    }

    static int staticLen = 1000;

    static boolean addLen = true;

    public static long start() throws Exception {

        AudioFormat fmt = new AudioFormat(44100, 16, 2, true, false);

        if (addLen) {

            staticLen += (int) (staticLen / 5) + 1000;

        } else {

            staticLen -= (int) (staticLen / 5) + 1000;

        }

        if (staticLen > 8 * 44100 * 4) {

            staticLen = 8 * 44100 * 4;

            addLen = !addLen;

        }

        if (staticLen < 1000) {

            staticLen = 1000;

            addLen = !addLen;

        }

        int len = staticLen;

        len -= (len % 4);

        byte[] fakedata = new byte[len];

        InputStream is = new ByteArrayInputStream(fakedata);

        AudioFormat format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,

                                             44100, 16, 2, 4, 44100, false);

        AudioInputStream ais = new AudioInputStream(is, format, fakedata.length

                / format.getFrameSize());

        out("    preparing to play back " + len + " bytes == " + bytes2Ms(len,

                                                                          format)

                    + "ms audio...");

        DataLine.Info info = new DataLine.Info(Clip.class, ais.getFormat());

        clip = (Clip) AudioSystem.getLine(info);

        clip.addLineListener(new LineListener() {

            public void update(LineEvent e) {

                if (e.getType() == LineEvent.Type.STOP) {

                    out("    calling close() from event dispatcher thread");

                    ((Clip) e.getSource()).close();

                } else if (e.getType() == LineEvent.Type.CLOSE) {

                }

            }

        });

        out("    opening...");

        try {

            clip.open(ais);

        } catch (Throwable t) {

            t.printStackTrace();

            clip.close();

            clip = null;

        }

        ais.close();

        if (clip != null) {

            out("    starting...");

            clip.start();

        }

        return bytes2Ms(fakedata.length, format);

    }

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

        if (AudioSystem.getMixerInfo().length == 0) {

            System.out.println("Cannot execute test: no mixers installed!");

            System.out.println("Not Failed.");

            return;

        }

        try {

            int COUNT = 10;

            out();

            out("4498848 Sound causes crashes on Linux (testing with Clip)");

            if (args.length > 0) {

                COUNT = Integer.parseInt(args[0]);

            }

            for (int i = 0; i < COUNT; i++) {

                out("  trial " + (i + 1) + "/" + COUNT);

                start();

                int waitTime = 500 + (1000 * (i

                                                      % 2)); // every second

                // time wait 1500, rather than 500ms.

                out("    waiting for " + waitTime

                            + " ms for audio playback to stop...");

                Thread.sleep(waitTime);

                out("    calling close() from main thread");

                if (clip != null) {

                    clip.close();

                }

                // let the subsystem enough time to actually close the soundcard

                out("    waiting for 2 seconds...");

                Thread.sleep(2000);

                out();

            }

            out("  waiting for 1 second...");

            Thread.sleep(1000);

        } catch (Exception e) {

            e.printStackTrace();

            out("  waiting for 1 second");

            try {

                Thread.sleep(1000);

            } catch (InterruptedException ie) {

            }

            throw e;

        }

        out("Test passed");

    }

    static void out() {

        out("");

    }

    static void out(String s) {

        System.out.println(s);

        System.out.flush();

    }

}