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*
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* 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
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*
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* 2 along with this work; if not, write to the Free Software Foundation,
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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.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.SourceDataLine;
/**
* @test
* @bug 4834461
* @summary Applet hang when you load it during sound card is in use
* @run main/manual PlaySine
*/
public class PlaySine {
static int sampleRate = 8000;
static double frequency = 2000.0;
static double RAD = 2.0 * Math.PI;
static byte[] audioData = new byte[sampleRate/2];
static SourceDataLine source;
static Mixer mixer = null;
static AudioInputStream ais = null;
static AudioFormat audioFormat;
static String filename;
public static void constructAIS() {
try {
ais = AudioSystem.getAudioInputStream(new File(filename));
} catch (Exception e) {
println("ERROR: could not open "+filename+": "+e.getMessage());
}
}
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) {
}
}
static int audioLen = -1;
static int audioOffset = -1;
public static void writeData() {
if (audioLen == -1) {
audioLen = audioData.length;
}
if (audioOffset < 0) {
audioOffset = audioLen;
}
try {
if (audioOffset >= audioLen) {
audioOffset = 0;
if (ais!=null) {
do {
audioLen = ais.read(audioData, 0, audioData.length);
if (audioLen < 0) {
constructAIS();
}
} while (audioLen < 0);
}
}
int toWrite = audioLen - audioOffset;
int written = source.write(audioData, audioOffset, toWrite);
audioOffset+=written;
} catch (Exception e) {
e.printStackTrace();
}
}
public static int play(boolean shouldPlay) {
int res = 0;
DataLine.Info info = new DataLine.Info(SourceDataLine.class, audioFormat);
try {
println("Getting line from mixer...");
source = (SourceDataLine) mixer.getLine(info);
println("Opening line...");
println(" -- if the program is hanging here, kill the process that has blocks the audio device now.");
source.open(audioFormat);
println("Starting line...");
source.start();
println("Writing audio data for 1 second...");
long startTime = System.currentTimeMillis();
while (System.currentTimeMillis() - startTime < 1000) {
writeData();
Thread.sleep(100);
}
res = 1;
} 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();
}
return 3;
} catch (LineUnavailableException lue) {
println("LineUnavailableException: "+lue.getMessage());
if (shouldPlay) {
println("ERROR: the line should be available now!.");
println(" Verify that you killed the other audio process.");
} else {
println("Correct behavior! the bug is fixed.");
}
res = 2;
} catch (Exception e) {
println("Unexpected Exception: "+e.toString());
}
if (source != null) {
println("Draining...");
try {
source.drain();
} catch (NullPointerException npe) {
println("(NullPointerException: bug fixed in J2SE 1.4.2");
}
println("Stopping...");
source.stop();
println("Closing...");
source.close();
source = null;
}
return res;
}
public static void main(String[] args) throws Exception {
println("This is an interactive test. You can run it with a filename as argument");
println("It is only meant to be run on linux, with the (old) OSS kernel drivers (/dev/dsp)");
println("This test should not be run on systems with ALSA installed, or kernel 2.6 or higher.");
println("");
println("The test verifies that Java Sound fails correctly if another process is blocking");
println("the audio device.");
println("");
println("Checking sanity...");
Mixer.Info[] mixers=null;
mixers = AudioSystem.getMixerInfo();
for (int i=0; i<mixers.length; i++) {
try {
Mixer thisMixer = AudioSystem.getMixer(mixers[i]);
String mixerName = thisMixer.getMixerInfo().getName();
if (mixerName.indexOf("Java Sound")>=0
&& mixerName.indexOf("Engine")>=0) {
mixer = thisMixer;
break;
}
} catch (Exception e) {
e.printStackTrace();
}
}
if (mixer == null) {
if (mixers.length==0) {
System.out.println("ERROR: No mixers available!");
} else {
println("ERROR: Java Sound Engine could not be found.");
}
println("Cannot run this test.");
return;
}
println(" ...using mixer "+mixer.getMixerInfo());
String osname = System.getProperty("os.name");
if ((osname == null) || (osname.toLowerCase().indexOf("linux")<0)) {
println("ERROR: not running on linux (you are running on "+osname+")");
return;
}
println(" ...running on "+osname);
println(" ...sanity test OK.");
filename = null;
if (args.length>0) {
File f = new File(args[0]);
if (f.exists()) {
filename = args[0];
println("Opening "+filename);
constructAIS();
if (ais!=null) {
audioFormat = ais.getFormat();
}
}
}
if (ais == 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);
}
}
println("");
println("Now, on a second console, run the following command:");
println(" cat - < /dev/zero > /dev/dsp");
key();
println("After you press ENTER now, the mixer will be opened.");
println("There are 3 possible cases that can occur:");
println("1) you'll hear a sine wave");
println(" -> you are running with mixing OSS drivers. ");
println(" Some soundcards only provide mixing OSS drivers.");
println(" Test environment not valid. ");
println(" Repeat on another machine where you can reproduce the bug first.");
println("2) this program stops doing anything after 'Opening line...'");
println(" -> this is the bug.");
println(" Kill the command on the other console with Ctrl-C, this program");
println(" should continue working then.");
println("3) this program reports a LineUnavailableException");
println(" -> bug is fixed.");
println(" OR you run with non-blocking OSS drivers.");
println(" make sure that you can reproduce this bug first with e.g. J2SE 1.4.1");
key();
int playedFirst = play(false);
int playedSecond = 0;
if (playedFirst == 2) {
println("");
println("Now kill the other process with Ctrl-C.");
println("After that, this program should be able to play ");
println("the sine wave without problems.");
key();
playedSecond = play(true);
}
println("");
if (playedFirst == 1) {
println("Test FAILED.");
}
else if (playedFirst == 2 && playedSecond == 1) {
println("Test SUCCESSFUL");
} else {
println("Test not failed (but not successful either...).");
}
}
}