Re: Line unavailable exceptions still happening with openjdk when acquiring a sourcedataline

[Paulo Levi]

Here is a testcase. Hope this can be fixed:

package util.speech;

import java.util.Iterator;
import java.util.Locale;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.SourceDataLine;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Assume;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;

/**
 *
 * @author i30817
 */
public class VoiceTest {



    public VoiceTest() {
    }

    @BeforeClass
    public static void setUpClass() throws Exception {
    }

    @AfterClass
    public static void tearDownClass() throws Exception {
    }

    @Before
    public void setUp() {

    }

    @After
    public void tearDown() {
    }

    @Test
    public void testDataLineAvailableAndBuggyInJDK() throws
LineUnavailableException {
        boolean failedSimpleGetLine = false;
        AudioFormat format = new AudioFormat(44100, 16, 2, true, false);
        SourceDataLine line = null;
        DataLine.Info info = new DataLine.Info(SourceDataLine.class,
format);
        try {
            line = (SourceDataLine) AudioSystem.getLine(info);
        } catch (LineUnavailableException e) {
            //ok, at least it says so
            throw e;
        }
        try {
            //if this fails the jdk is very buggy, since it just told us
            //the line was available
            line.open(format);
        } catch (LineUnavailableException e) {
            failedSimpleGetLine = true;
        } finally {
            if (line.isOpen()) {
                line.close();
            }
        }



        //now if this is true, test if it's possible to get a valid
sourcedataline
        //or the only bug is adquiring a sourcedataline doesn't throw a
lineunavailable
        //exception before open
        Assume.assumeTrue(failedSimpleGetLine);
        line = getSourceDataLine(format);
        if (line == null) {
            return;
        }

        try {
            line.open(format);
        } catch (LineUnavailableException e) {
            //ok then it is consistent, and there is only one bug
            fail("Line Unavailable after being adquired");
        } finally {
            if (line.isOpen()) {
                line.close();
            }
        }
        fail("line available after first test not managing to adquire it");
    }


    private SourceDataLine getSourceDataLine(AudioFormat format) {
        try {
            DataLine.Info info = new DataLine.Info(SourceDataLine.class,
format);
            for (Mixer.Info mi : AudioSystem.getMixerInfo()) {
                SourceDataLine dataline = null;
                try {
                    Mixer mixer = AudioSystem.getMixer(mi);
                    dataline = (SourceDataLine) mixer.getLine(info);
                    dataline.open(format);
                    dataline.start();
                    return dataline;
                } catch (Exception e) {
                }
                if (dataline != null) {
                    try {
                        dataline.close();
                    } catch (Exception e) {
                    }
                }
            }
        } catch (Exception e) {
        }
        return null;
    }
}



On Wed, Mar 24, 2010 at 5:56 AM, Paulo Levi <i30...@gmail.com> wrote:

> Forgot this is when using freetts, but really i expect it to happen with
> other programs.
>
>
> On Wed, Mar 24, 2010 at 5:55 AM, Paulo Levi <i30...@gmail.com> wrote:
>
>> This still happens on ubuntu lucid lynx with a recent jdk
>> java version "1.7.0_0-icedtea"
>> OpenJDK Runtime Environment (IcedTea7 1.11) (7b72-0ubuntu1~ppa1)
>> OpenJDK Client VM (build 17.0-b01, mixed mode, sharing)
>>
>> in the third post in this thread
>> http://forums.sun.com/thread.jspa?threadID=5189363
>>
>> Don't you guys test sound in linux :(
>>
>
>