/*

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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.

 *

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import java.io.IOException;

import javax.sound.sampled.AudioFormat;

import javax.sound.sampled.AudioSystem;

import javax.sound.sampled.Clip;

import javax.sound.sampled.DataLine;

import javax.sound.sampled.LineUnavailableException;

import javax.sound.sampled.Mixer;

/**

 * This is utility class for Test4218609.

 */

public class ClickInPlay {

    static int sampleRate = 8000;

    static double frequency = 2000.0;

    static double RAD = 2.0 * Math.PI;

    static byte[] audioData = new byte[sampleRate/2];

    static DataLine.Info info;

    static Clip source;

    //static AudioInputStream ais = null;

    static AudioFormat audioFormat;

    //static String filename;

    public static void print(String s) {

        System.out.print(s);

    }

    public static void println(String s) {

        System.out.println(s);

    }

    public static void key() {

        println("");

        print("Press ENTER to continue...");

        try {

            System.in.read();

        } catch (IOException ioe) {

        }

    }

    public static void play(Mixer mixer) {

        int res = 0;

        try {

            println("Getting clip from mixer...");

            source = (Clip) mixer.getLine(info);

            println("Opening clip...");

            source.open(audioFormat, audioData, 0, audioData.length);

            println("Starting clip...");

            source.loop(Clip.LOOP_CONTINUOUSLY);

            println("Now open your ears:");

            println("- if you hear a sine wave playing,");

            println("  listen carefully if you can hear clicks.");

            println("  If no, the bug is fixed.");

            println("- if you don't hear anything, it's possible");

            println("  that this mixer is not connected to an ");

            println("  amplifier, or that its volume is set to 0");

            key();

        } catch (IllegalArgumentException iae) {

            println("IllegalArgumentException: "+iae.getMessage());

            println("Sound device cannot handle this audio format.");

            println("ERROR: Test environment not correctly set up.");

            if (source!=null) {

                source.close();

                source = null;

            }

            return;

        } catch (LineUnavailableException lue) {

            println("LineUnavailableException: "+lue.getMessage());

            println("This is normal for some mixers.");

        } catch (Exception e) {

            println("Unexpected Exception: "+e.toString());

        }

        if (source != null) {

            println("Stopping...");

            source.stop();

            println("Closing...");

            source.close();

            println("Closed.");

            source = null;

        }

    }

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

        println("This is an interactive test.");

        println("If you can hear clicks during playback in");

        println("any mixer, the test is failed.");

        println("");

        println("Make sure that you have speakers connected");

        println("and that the system mixer is not muted.");

        println("");

        println("Press a key to start the test.");

        key();

        Mixer.Info[] mixers=null;

            println("   ...using self-generated sine wave for playback");

            audioFormat = new AudioFormat((float)sampleRate, 8, 1, true, true);

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

                audioData[i] = (byte)(Math.sin(RAD*frequency/sampleRate*i)*127.0);

            }

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

        mixers = AudioSystem.getMixerInfo();

        int succMixers = 0;

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

            try {

                Mixer mixer = AudioSystem.getMixer(mixers[i]);

                if (mixer.isLineSupported(info)) {

                    succMixers++;

                    println("  ...using mixer "+mixer.getMixerInfo());

                    play(mixer);

                }

            } catch (Exception e) {

                e.printStackTrace();

            }

        }

        if (succMixers == 0) {

                println("No mixers available! ");

                println("Cannot run test.");

        }

    }

}