/*

 * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import javax.sound.sampled.AudioFormat;

import javax.sound.sampled.AudioSystem;

import javax.sound.sampled.Clip;

import javax.sound.sampled.DataLine;

import javax.sound.sampled.Mixer;

import javax.sound.sampled.SourceDataLine;

/**

 * @test

 * @bug 4515126

 * @summary Verify that the buffer passed to SourceDataLine.write() and

 *          Clip.open() will not be changed

 */

public class ChangingBuffer {

    final static int samplerate = 44100;

    final static byte[] buffer = new byte[16384];

    static int successfulTests = 0;

    private static void makeBuffer() {

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

            buffer[i] = (byte) (i % 128);

        }

    }

    private static void checkBufferSDL() throws Exception {

        successfulTests++;

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

            if (buffer[i] != ((byte) (i % 128))) {

                throw new Exception("Buffer was changed by SourceDataLine.write()!. Test FAILED");

            }

        }

        System.out.println("  -> passed for this line");

        System.out.println("");

    }

    private static void checkBufferClip() throws Exception {

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

            if (buffer[i] != (i % 128)) {

                throw new Exception("Buffer was changed by Clip.open()!. Test FAILED");

            }

        }

        System.out.println("  -> passed for this clip");

        System.out.println("");

    }

    private static boolean doMixerClip(Mixer mixer, AudioFormat format) {

        if (mixer==null) return false;

        try {

            System.out.println("Trying mixer "+mixer+":");

                DataLine.Info info = new DataLine.Info(

                                          Clip.class,

                                          format,

                                          (int) samplerate);

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

            System.out.println("  - got clip: "+clip);

            System.out.println("  - open with format "+format);

            clip.open(format, buffer, 0, buffer.length);

            System.out.println("  - playing...");

            clip.start();

            System.out.println("  - waiting while it's active...");

            while (clip.isActive())

                    Thread.sleep(100);

            System.out.println("  - waiting 100millis");

            Thread.sleep(100);

            System.out.println("  - drain1");

            clip.drain();

            System.out.println("  - drain2");

            clip.drain();

            System.out.println("  - stop");

            clip.stop();

            System.out.println("  - close");

            clip.close();

            System.out.println("  - closed");

        } catch (Throwable t) {

            System.out.println("  - Caught exception. Not failed.");

            System.out.println("  - "+t.toString());

            return false;

        }

        return true;

    }

    private static boolean doMixerSDL(Mixer mixer, AudioFormat format) {

        if (mixer==null) return false;

        try {

            System.out.println("Trying mixer "+mixer+":");

                DataLine.Info info = new DataLine.Info(

                                          SourceDataLine.class,

                                          format,

                                          (int) samplerate);

                SourceDataLine sdl = (SourceDataLine) mixer.getLine(info);

            System.out.println("  - got sdl: "+sdl);

            System.out.println("  - open with format "+format);

            sdl.open(format);

            System.out.println("  - start...");

            sdl.start();

            System.out.println("  - write...");

            sdl.write(buffer, 0, buffer.length);

            Thread.sleep(200);

            System.out.println("  - drain...");

            sdl.drain();

            System.out.println("  - stop...");

            sdl.stop();

            System.out.println("  - close...");

            sdl.close();

            System.out.println("  - closed");

        } catch (Throwable t) {

            System.out.println("  - Caught exception. Not failed.");

            System.out.println("  - "+t.toString());

            return false;

        }

        return true;

    }

    private static void doAll(boolean bigEndian) throws Exception {

        AudioFormat pcm = new AudioFormat(

                            AudioFormat.Encoding.PCM_SIGNED,

                            samplerate, 16, 1, 2, samplerate, bigEndian);

            Mixer.Info[] mixers = AudioSystem.getMixerInfo();

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

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

                makeBuffer(); if (doMixerClip(mixer, pcm)) checkBufferClip();

                makeBuffer(); if (doMixerSDL(mixer, pcm)) checkBufferSDL();

            }

            if (mixers.length==0) {

                System.out.println("No mixers available!");

            }

    }

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

        doAll(true);

        doAll(false);

        if (successfulTests==0) {

            System.out.println("Could not execute any of the tests. Test NOT failed.");

        } else {

            System.out.println("Test PASSED.");

        }

    }

}