/* PulseSourceDataLineTest.java
   Copyright (C) 2008 Red Hat, Inc.

This file is part of IcedTea.

IcedTea is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 2.

IcedTea 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 for more details.

You should have received a copy of the GNU General Public License
along with IcedTea; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module.  An independent module is a module which is not derived from
or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so.  If you do not wish to do so, delete this
exception statement from your version.
 */

package org.classpath.icedtea.pulseaudio;

import static org.junit.Assert.assertNotNull;

import java.io.File;
import java.io.IOException;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.BooleanControl;
import javax.sound.sampled.Control;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.FloatControl;
import javax.sound.sampled.Line;
import javax.sound.sampled.LineEvent;
import javax.sound.sampled.LineListener;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.SourceDataLine;
import javax.sound.sampled.UnsupportedAudioFileException;

import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;

public class PulseAudioSourceDataLineTest {
	Mixer mixer;
	SourceDataLine sourceDataLine;
	private int listenerCalled = 0;

	int started = 0;
	int stopped = 0;
	int opened = 0;
	int closed = 0;

	AudioFormat aSupportedFormat = new AudioFormat(
			AudioFormat.Encoding.PCM_UNSIGNED, 44100f, 8, 1, 1, 10, true);

	class ThreadWriter extends Thread {
		SourceDataLine line;
		AudioInputStream stream;

		public ThreadWriter(AudioInputStream stream, SourceDataLine line)
				throws LineUnavailableException {

			this.line = line;
			this.stream = stream;

			if (line.isOpen()) {
				line.close();
			}

		}

		@Override
		public void run() {
			try {
				AudioFormat audioFormat = stream.getFormat();

				line.open(audioFormat);

				byte[] abData = new byte[1000];
				int bytesRead = 0;

				line.start();

				while (bytesRead >= 0) {
					bytesRead = stream.read(abData, 0, abData.length);
					// System.out.println("read data");
					if (bytesRead > 0) {
						// System.out.println("about to write data");
						line.write(abData, 0, bytesRead);
						// System.out.println("wrote data");
					}
				}

				line.drain();
				line.close();

			} catch (LineUnavailableException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	@Before
	public void setUp() throws Exception {
		Mixer.Info mixerInfos[] = AudioSystem.getMixerInfo();
		Mixer.Info selectedMixerInfo = null;
		// int i = 0;
		for (Mixer.Info info : mixerInfos) {
			// System.out.println("Mixer Line " + i++ + ": " + info.getName() +
			// " " + info.getDescription());
			if (info.getName().contains("PulseAudio")) {
				selectedMixerInfo = info;
			}
		}
		assertNotNull(selectedMixerInfo);
		mixer = AudioSystem.getMixer(selectedMixerInfo);
		assertNotNull(mixer);
		if (mixer.isOpen()) {
			mixer.close();
		}

		mixer.open();

		sourceDataLine = null;

		started = 0;
		stopped = 0;
		opened = 0;
		closed = 0;
		listenerCalled = 0;
	}

	@Test
	public void testOpenAndClose() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));

		sourceDataLine.open();
		Assert.assertTrue(sourceDataLine.isOpen());

		sourceDataLine.close();
		Assert.assertFalse(sourceDataLine.isOpen());

	}

	@Test
	public void testIsActiveAndIsOpen() throws LineUnavailableException {

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, aSupportedFormat, 1000));

		Assert.assertFalse(sourceDataLine.isActive());
		Assert.assertFalse(sourceDataLine.isOpen());
		sourceDataLine.open();
		Assert.assertTrue(sourceDataLine.isOpen());
		Assert.assertFalse(sourceDataLine.isActive());
		sourceDataLine.start();
		Assert.assertTrue(sourceDataLine.isOpen());
		Assert.assertTrue(sourceDataLine.isActive());
		sourceDataLine.stop();
		Assert.assertTrue(sourceDataLine.isOpen());
		Assert.assertFalse(sourceDataLine.isActive());
		sourceDataLine.close();
		Assert.assertFalse(sourceDataLine.isOpen());
		Assert.assertFalse(sourceDataLine.isActive());

	}

	@Test
	public void testPlay() throws LineUnavailableException,
			UnsupportedAudioFileException, IOException {
		System.out.println("This test plays a file");

		File soundFile = new File("testsounds/startup.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, audioFormat));
		Assert.assertNotNull(sourceDataLine);

		sourceDataLine.open(audioFormat);
		System.out.println("opened");
		sourceDataLine.start();
		System.out.println("started");
		byte[] abData = new byte[1000];
		int bytesRead = 0;

		while (bytesRead >= 0) {
			bytesRead = audioInputStream.read(abData, 0, abData.length);
			if (bytesRead > 0) {
				sourceDataLine.write(abData, 0, bytesRead);
			}
		}
		System.out.println("done");

		sourceDataLine.drain();
		System.out.println("drained");
		sourceDataLine.stop();
		sourceDataLine.close();
		System.out.println("closed");

	}

	@Test
	public void testStartedStopped() throws LineUnavailableException,
			UnsupportedAudioFileException, IOException {

		File soundFile = new File("testsounds/startup.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, audioFormat));
		Assert.assertNotNull(sourceDataLine);

		sourceDataLine.open(audioFormat);

		LineListener startStopListener = new LineListener() {

			@Override
			public void update(LineEvent event) {
				if (event.getType() == LineEvent.Type.START) {
					System.out.println("START");
					started++;
					Assert.assertEquals(1, started);
				}

				if (event.getType() == LineEvent.Type.STOP) {
					System.out.println("STOP");
					stopped++;
					Assert.assertEquals(1, stopped);
				}
			}

		};

		sourceDataLine.addLineListener(startStopListener);

		byte[] abData = new byte[1000];
		int bytesRead = 0;

		sourceDataLine.start();
		while (bytesRead >= 0) {
			bytesRead = audioInputStream.read(abData, 0, abData.length);
			if (bytesRead > 0) {
				sourceDataLine.write(abData, 0, bytesRead);
			}
		}
		sourceDataLine.drain();

		sourceDataLine.stop();
		sourceDataLine.close();

		Assert.assertEquals(1, started);
		Assert.assertEquals(1, stopped);

	}

	@Test
	public void test2StartAndStopEvents() throws UnsupportedAudioFileException,
			IOException, LineUnavailableException, InterruptedException {

		System.out
				.println("This test checks if START and STOP notifications appear on corking");

		File soundFile = new File("testsounds/startup.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, audioFormat));
		Assert.assertNotNull(sourceDataLine);

		LineListener startStopListener = new LineListener() {

			@Override
			public void update(LineEvent event) {
				if (event.getType() == LineEvent.Type.START) {
					System.out.println("START");
					started++;
				}

				if (event.getType() == LineEvent.Type.STOP) {
					System.out.println("STOP");
					stopped++;
				}
			}

		};

		sourceDataLine.addLineListener(startStopListener);
		System.out.println("Launching threadWriter");
		ThreadWriter writer = new ThreadWriter(audioInputStream, sourceDataLine);
		writer.start();
		// System.out.println("started");

		Thread.sleep(1000);

		sourceDataLine.stop();

		System.out.println("corked");

		Thread.sleep(5000);

		// UNCORK

		sourceDataLine.start();

		Thread.sleep(2000);

		// System.out.println("waiting for thread to finish");
		writer.join();

		Assert.assertEquals(2, started);
		Assert.assertEquals(2, stopped);

	}

	@Test
	public void test3StartAndStopEvents() throws UnsupportedAudioFileException,
			IOException, LineUnavailableException, InterruptedException {

		System.out
				.println("This test checks if START and STOP notifications appear on corking");

		File soundFile = new File("testsounds/startup.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, audioFormat));
		Assert.assertNotNull(sourceDataLine);

		LineListener startStopListener = new LineListener() {

			@Override
			public void update(LineEvent event) {
				if (event.getType() == LineEvent.Type.START) {
					System.out.println("START");
					started++;
				}

				if (event.getType() == LineEvent.Type.STOP) {
					System.out.println("STOP");
					stopped++;
				}
			}

		};

		sourceDataLine.addLineListener(startStopListener);
		System.out.println("Launching threadWriter");
		ThreadWriter writer = new ThreadWriter(audioInputStream, sourceDataLine);
		writer.start();
		// System.out.println("started");

		Thread.sleep(1000);

		sourceDataLine.stop();

		Thread.sleep(1000);

		sourceDataLine.start();

		Thread.sleep(1000);

		sourceDataLine.stop();

		Thread.sleep(1000);

		sourceDataLine.start();

		Thread.sleep(1000);

		// System.out.println("waiting for thread to finish");
		writer.join();

		Assert.assertEquals(3, started);
		Assert.assertEquals(3, stopped);

	}

	@Test(expected = IllegalStateException.class)
	public void testStartOnClosedLine() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));
		Assert.assertNotNull(sourceDataLine);

		sourceDataLine.start();

	}

	@Test(expected = IllegalStateException.class)
	public void testStopOnClosedLine() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));
		Assert.assertNotNull(sourceDataLine);

		sourceDataLine.stop();
	}

	@Test(expected = IllegalArgumentException.class)
	public void testPlayLessThanFrameSize() throws LineUnavailableException,
			UnsupportedAudioFileException, IOException {
		File soundFile = new File("testsounds/startup.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();
		// the audio file must have an even number of channels
		Assert.assertTrue(audioFormat.getChannels() % 2 == 0);

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, audioFormat));

		byte[] data = new byte[1];
		data[0] = (byte) 'a';

		sourceDataLine.open();
		sourceDataLine.start();
		try {
			sourceDataLine.write(data, 0, 1);
		} finally {
			sourceDataLine.stop();
			sourceDataLine.close();
		}
	}

	@Test
	public void testOpenFormat() throws LineUnavailableException,
			UnsupportedAudioFileException, IOException {
		/*
		 * This test makes sure that the default format of a line using open()
		 * is the same format that was passed to the mixer's getLine() function
		 * to get the line in the first place
		 */

		File soundFile = new File("testsounds/startup.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, audioFormat));
		Assert.assertNotNull(sourceDataLine);
		sourceDataLine.open();
		Assert.assertTrue(sourceDataLine.getFormat().matches(audioFormat));
		sourceDataLine.close();
	}

	@Test
	public void testFindLineWithFormat() throws LineUnavailableException {
		System.out
				.println("This test tries to find a line with a valid format");
		AudioFormat wantedFormat = new AudioFormat(
				AudioFormat.Encoding.PCM_UNSIGNED, 44100f, 8, 1, 1, 10, true);
		System.out.println(wantedFormat);

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, wantedFormat));
		sourceDataLine.open();
		System.out.println(sourceDataLine.getFormat());
		sourceDataLine.close();

	}

	@Test(expected = IllegalArgumentException.class)
	public void testFindLineWithWrongFormat() throws LineUnavailableException {
		System.out
				.println("This test tries to acquire a line with incorrect format spec");
		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, new AudioFormat(
						AudioFormat.Encoding.PCM_UNSIGNED, 44100, 10000, 1, 13,
						10, true)));
		sourceDataLine.open();
		sourceDataLine.close();
	}

	@Test
	public void testFindControl() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));
		sourceDataLine.open();
		Control[] controls = sourceDataLine.getControls();
		Assert.assertNotNull(controls);
		Assert.assertTrue(sourceDataLine.getControls().length > 0);
		for (Control control : controls) {
			Assert.assertNotNull(control);
		}
		sourceDataLine.close();
	}

	@Test
	public void testSupportedControls() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));
		sourceDataLine.open();
		Assert.assertTrue(sourceDataLine
				.isControlSupported(FloatControl.Type.VOLUME));
		Assert.assertTrue(sourceDataLine
				.isControlSupported(BooleanControl.Type.MUTE));
		sourceDataLine.close();
	}

	@Test
	public void testVolumeAndMute() throws Exception {

		Mixer selectedMixer = mixer;
		sourceDataLine = (SourceDataLine) selectedMixer.getLine(new Line.Info(
				SourceDataLine.class));

		File soundFile = new File(new java.io.File(".").getCanonicalPath()
				+ "/testsounds/logout.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine.open(audioFormat);
		sourceDataLine.start();
		FloatControl volume = (FloatControl) sourceDataLine
				.getControl(FloatControl.Type.VOLUME);
		BooleanControl mute = (BooleanControl) sourceDataLine
				.getControl(BooleanControl.Type.MUTE);

		mute.setValue(true);
		volume.setValue(volume.getMaximum());

		mute.setValue(false);

		byte[] abData = new byte[1000];
		int bytesRead = 0;

		while (bytesRead >= 0) {
			bytesRead = audioInputStream.read(abData, 0, abData.length);
			if (bytesRead > 0) {
				sourceDataLine.write(abData, 0, bytesRead);
			}
		}

		sourceDataLine.drain();
		sourceDataLine.close();
		selectedMixer.close();

	}

	@Test
	public void testVolumeChanging() throws LineUnavailableException,
			IOException, UnsupportedAudioFileException {

		Mixer selectedMixer = mixer;

		sourceDataLine = (SourceDataLine) selectedMixer.getLine(new Line.Info(
				SourceDataLine.class));

		File soundFile = new File(new java.io.File(".").getCanonicalPath()
				+ "/testsounds/logout.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine.open(audioFormat);
		sourceDataLine.start();
		FloatControl volume = (FloatControl) sourceDataLine
				.getControl(FloatControl.Type.VOLUME);

		volume.setValue(volume.getMinimum());

		byte[] abData = new byte[1000];
		int bytesRead = 0;

		while (bytesRead >= 0) {
			bytesRead = audioInputStream.read(abData, 0, abData.length);
			if (bytesRead > 0) {
				sourceDataLine.write(abData, 0, bytesRead);
				volume.setValue(volume.getValue() + 100);
			}
		}

		sourceDataLine.drain();
		sourceDataLine.close();
		selectedMixer.close();

	}

	@Test
	public void testOpenEvent() throws LineUnavailableException {

		listenerCalled = 0;
		LineListener openListener = new LineListener() {
			public void update(LineEvent event) {
				Assert.assertTrue(event.getType() == LineEvent.Type.OPEN);
				PulseAudioSourceDataLineTest.this.listenerCalled++;
			}
		};

		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));
		sourceDataLine.addLineListener(openListener);
		sourceDataLine.open();
		sourceDataLine.removeLineListener(openListener);
		sourceDataLine.close();
		Assert.assertEquals(1, listenerCalled);
		listenerCalled = 0;
	}

	@Test
	public void testCloseEvent() throws LineUnavailableException {
		listenerCalled = 0;
		LineListener closeListener = new LineListener() {
			public void update(LineEvent event) {
				Assert.assertTrue(event.getType() == LineEvent.Type.CLOSE);
				PulseAudioSourceDataLineTest.this.listenerCalled++;
			}
		};

		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));
		sourceDataLine.open();
		sourceDataLine.addLineListener(closeListener);
		sourceDataLine.close();
		sourceDataLine.removeLineListener(closeListener);
		Assert.assertEquals(1, listenerCalled);
		listenerCalled = 0;
	}

	@Test
	public void testCloseEventWrongListener() throws LineUnavailableException {
		listenerCalled = 0;
		LineListener closeListener = new LineListener() {
			public void update(LineEvent event) {
				PulseAudioSourceDataLineTest.this.listenerCalled++;
			}
		};

		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));

		sourceDataLine.open();
		sourceDataLine.addLineListener(closeListener);
		sourceDataLine.removeLineListener(closeListener);
		sourceDataLine.close();
		Assert.assertEquals(0, listenerCalled);
		listenerCalled = 0;

	}

	@Test
	public void testFramePosition() throws UnsupportedAudioFileException,
			IOException, LineUnavailableException {
		File soundFile = new File("testsounds/logout.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, audioFormat));
		Assert.assertNotNull(sourceDataLine);

		sourceDataLine.open(audioFormat);
		sourceDataLine.start();

		byte[] abData = new byte[1000];
		int bytesRead = 0;

		while (bytesRead >= 0) {
			bytesRead = audioInputStream.read(abData, 0, abData.length);
			if (bytesRead > 0) {
				sourceDataLine.write(abData, 0, bytesRead);
			}
		}

		sourceDataLine.drain();
		sourceDataLine.stop();
		System.out.println("frame position: "
				+ sourceDataLine.getFramePosition());
		long expected = 136703;
		long granularity = 100;
		long pos = sourceDataLine.getFramePosition();
		Assert.assertTrue(Math.abs(expected - pos) < granularity);
		sourceDataLine.close();
	}

	@Test
	public void testFramePositionAfterPlayingTwice()
			throws UnsupportedAudioFileException, IOException,
			LineUnavailableException {
		File soundFile = new File("testsounds/logout.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, audioFormat));
		Assert.assertNotNull(sourceDataLine);

		sourceDataLine.open(audioFormat);
		sourceDataLine.start();

		byte[] abData = new byte[1000];
		int bytesRead = 0;

		while (bytesRead >= 0) {
			bytesRead = audioInputStream.read(abData, 0, abData.length);
			if (bytesRead > 0) {
				sourceDataLine.write(abData, 0, bytesRead);
			}
		}

		sourceDataLine.drain();
		sourceDataLine.stop();

		soundFile = new File("testsounds/logout.wav");
		audioInputStream = AudioSystem.getAudioInputStream(soundFile);
		audioFormat = audioInputStream.getFormat();

		sourceDataLine.start();

		abData = new byte[1000];
		bytesRead = 0;

		while (bytesRead >= 0) {
			bytesRead = audioInputStream.read(abData, 0, abData.length);
			if (bytesRead > 0) {
				sourceDataLine.write(abData, 0, bytesRead);
			}
		}

		sourceDataLine.drain();
		sourceDataLine.stop();

		System.out.println("frame position: "
				+ sourceDataLine.getFramePosition());
		long expected = 136703 * 2;
		long granularity = 100;
		long pos = sourceDataLine.getFramePosition();
		Assert.assertTrue(Math.abs(expected - pos) < granularity);
		sourceDataLine.close();
	}

	@Test
	public void testMicroSecondPosition() throws UnsupportedAudioFileException,
			IOException, LineUnavailableException {

		File soundFile = new File("testsounds/logout.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, audioFormat));
		Assert.assertNotNull(sourceDataLine);

		sourceDataLine.open(audioFormat);
		sourceDataLine.start();

		byte[] abData = new byte[1000];
		int bytesRead = 0;

		while (bytesRead >= 0) {
			bytesRead = audioInputStream.read(abData, 0, abData.length);
			if (bytesRead > 0) {
				sourceDataLine.write(abData, 0, bytesRead);
			}
		}

		sourceDataLine.drain();
		sourceDataLine.stop();
		System.out.println("time position: "
				+ sourceDataLine.getMicrosecondPosition());
		long expected = 6200;
		long granularity = 100;
		long pos = sourceDataLine.getMicrosecondPosition();
		Assert.assertTrue(Math.abs(expected - pos) < granularity);
		sourceDataLine.close();

	}

	@Test
	public void testBufferSizes() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));
		sourceDataLine.open(aSupportedFormat, 10000);
		Assert.assertEquals(10000, sourceDataLine.getBufferSize());
		sourceDataLine.close();
	}

	@Test
	public void testHasADefaultFormat() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));
		Assert.assertNotNull(sourceDataLine.getFormat());
		System.out.println(sourceDataLine.getFormat());

	}

	@Test
	public void testDefaultFormatWithGetLine() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, aSupportedFormat, 1000));
		Assert.assertEquals(aSupportedFormat, sourceDataLine.getFormat());

	}

	@Test
	public void testDefaultBufferSize() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, aSupportedFormat, 1000));
		Assert.assertEquals(StreamBufferAttributes.SANE_DEFAULT, sourceDataLine
				.getBufferSize());
	}

	@Test
	public void testDrainTwice() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, aSupportedFormat, 1000));

		sourceDataLine.open();
		sourceDataLine.drain();
		sourceDataLine.drain();
		sourceDataLine.close();

	}

	@Test
	public void testDrainWithoutStart() throws LineUnavailableException,
			UnsupportedAudioFileException, IOException, InterruptedException {

		File soundFile = new File("testsounds/logout.wav");
		AudioInputStream audioInputStream = AudioSystem
				.getAudioInputStream(soundFile);
		AudioFormat audioFormat = audioInputStream.getFormat();

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, audioFormat, 1000));
		Assert.assertNotNull(sourceDataLine);
		sourceDataLine.open();
		int available = sourceDataLine.available();
		Assert.assertTrue(available > 1000);

		byte[] abData = new byte[1000];
		int bytesRead = 0;

		bytesRead = audioInputStream.read(abData, 0, abData.length);
		Assert.assertTrue(bytesRead > 0);
		sourceDataLine.write(abData, 0, bytesRead);

		Runnable blocker = new Runnable() {
			@Override
			public void run() {
				sourceDataLine.drain();
			}
		};

		Thread th = new Thread(blocker);
		th.start();

		th.join(1000);

		if (th.isAlive()) {
			sourceDataLine.close();
			th.join(1000);
			if (th.isAlive()) {
				Assert
						.fail("drain() does not return when the line has been closed");
			} else {
				sourceDataLine.close();
			}
		} else {
			Assert.fail("drain() does not block when there is data on the "
					+ "source data line and it hasnt been started");
		}

	}

	@Test(expected = IllegalStateException.class)
	public void testDrainWithoutOpen() throws LineUnavailableException {

		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, aSupportedFormat, 1000));

		sourceDataLine.drain();

	}

	@Test
	public void testFlushTwice() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, aSupportedFormat, 1000));

		sourceDataLine.open();
		sourceDataLine.flush();
		sourceDataLine.flush();
		sourceDataLine.close();

	}

	@Test(expected = IllegalStateException.class)
	public void testFlushWithoutOpen() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new DataLine.Info(
				SourceDataLine.class, aSupportedFormat, 1000));

		sourceDataLine.flush();

	}

	@Test
	public void testMixerKnowsAboutOpenLines() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));

		Assert.assertEquals(0, mixer.getSourceLines().length);
		sourceDataLine.open();
		Assert.assertEquals(1, mixer.getSourceLines().length);
		Assert.assertTrue(sourceDataLine == mixer.getSourceLines()[0]);
		sourceDataLine.close();
		Assert.assertEquals(0, mixer.getSourceLines().length);

	}

	@Test
	public void testMixerKnowsAboutOpen2Lines() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));

		Assert.assertEquals(0, mixer.getSourceLines().length);
		sourceDataLine.open(aSupportedFormat);
		Assert.assertEquals(1, mixer.getSourceLines().length);
		Assert.assertTrue(sourceDataLine == mixer.getSourceLines()[0]);
		sourceDataLine.close();
		Assert.assertEquals(0, mixer.getSourceLines().length);

	}

	@Test
	public void testMixerKnowsAboutOpen3Lines() throws LineUnavailableException {
		sourceDataLine = (SourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));

		Assert.assertEquals(0, mixer.getSourceLines().length);
		sourceDataLine.open(aSupportedFormat, 10000);
		Assert.assertEquals(1, mixer.getSourceLines().length);
		Assert.assertTrue(sourceDataLine == mixer.getSourceLines()[0]);
		sourceDataLine.close();
		Assert.assertEquals(0, mixer.getSourceLines().length);

	}

	@Test
	public void testAllSourceLinesClosed() {
		Assert.assertEquals(0, mixer.getSourceLines().length);

	}

	public static void debug(String string) {
		System.out.println("DEBUG: " + string);
	}

	@Ignore
	@Test
	public void testSynchronization() throws Exception {
		Mixer.Info mixerInfos[] = AudioSystem.getMixerInfo();
		Mixer.Info selectedMixerInfo = null;
		// int i = 0;
		for (Mixer.Info info : mixerInfos) {
			// System.out.println("Mixer Line " + i++ + ": " + info.getName() +
			// " " + info.getDescription());
			if (info.getName().contains("PulseAudio")) {
				selectedMixerInfo = info;
				System.out.println(selectedMixerInfo);
			}
		}

		PulseAudioMixer mixer = (PulseAudioMixer) AudioSystem
				.getMixer(selectedMixerInfo);

		mixer.open();

		String fileName1 = "testsounds/startup.wav";
		File soundFile1 = new File(fileName1);
		AudioInputStream audioInputStream1 = AudioSystem
				.getAudioInputStream(soundFile1);

		PulseAudioSourceDataLine line1;
		line1 = (PulseAudioSourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));
		line1.setName("Line 1");

		String fileName2 = "testsounds/logout.wav";
		File soundFile = new File(fileName2);
		AudioInputStream audioInputStream2 = AudioSystem
				.getAudioInputStream(soundFile);

		PulseAudioSourceDataLine line2;
		line2 = (PulseAudioSourceDataLine) mixer.getLine(new Line.Info(
				SourceDataLine.class));
		line2.setName("Line 2");

		ThreadWriter writer1 = new ThreadWriter(audioInputStream1, line1);
		ThreadWriter writer2 = new ThreadWriter(audioInputStream2, line2);
		// line2.start();
		// line1.start();

		Line[] lines = { line1, line2 };
		mixer.synchronize(lines, true);

		// line2.stop();

		debug("PulseAudioMixer: " + line1.getName() + " and " + line2.getName()
				+ " synchronized");
		writer1.start();
		writer2.start();

		debug("PulseAudioMixer: writers started");
		line2.start();
		// line1.stop();
		// line1.start();
		debug("PulseAudioMixer: Started a line");

		writer1.join();
		writer2.join();

		debug("PulseAudioMixer: both lines joined");

		line2.close();
		debug("PulseAudioMixer: " + line2.getName() + " closed");

		line1.close();
		debug("PulseAudioMixer: " + line1.getName() + " closed");

		mixer.close();
		debug("PulseAudioMixer: mixer closed");

	}

	@After
	public void tearDown() throws Exception {
		started = 0;
		stopped = 0;

		if (sourceDataLine != null && sourceDataLine.isOpen()) {
			sourceDataLine.close();
		}

		if (mixer.isOpen()) {
			mixer.close();
		}

	}

}