JavaSound : Port.Info

[Mosiuoa Tsietsi]

I'm trying to capture sound in Java by using the Port.Info class. My
sound card does support recording from the line in because I've tested
it using the Sound Recorder program in Windows. But when I try to use
the following code :

if (AudioSystem.isLineSupported(Port.Info.LINE_IN)) {
try {
Port line = (Port)
AudioSystem.getLine(Port.Info.LINE_IN);
}catch(LineUnavailableException e){
}
}

it never executes the content of the if statement. If I use the
condition:

if (!AudioSystem.isLineSupported(Port.Info.LINE_IN)) {....}
instead, I get the following error:

java.lang.IllegalArgumentException: No line matching LINE_IN source
port is supported at
javax.sound.sampled.AudioSystem.getLine(AudioSystem.java:309)
Can anyway help? Thanks in advance.

 

[Knute Johnson]

I'm trying to capture sound in Java by using the Port.Info class. My
sound card does support recording from the line in because I've tested
it using the Sound Recorder program in Windows. But when I try to use
the following code :

if (AudioSystem.isLineSupported(Port.Info.LINE_IN)) {
try {
Port line = (Port)
AudioSystem.getLine(Port.Info.LINE_IN);
}catch(LineUnavailableException e){
}
}

it never executes the content of the if statement. If I use the
condition:

if (!AudioSystem.isLineSupported(Port.Info.LINE_IN)) {....}
instead, I get the following error:

java.lang.IllegalArgumentException: No line matching LINE_IN source
port is supported at
javax.sound.sampled.AudioSystem.getLine(AudioSystem.java:309)
Can anyway help? Thanks in advance.

What you are trying won't work. You can't get a line from a PORT. A
Java PORT is really a place to get mixer controls. I know it doesn't
make a lot of sense but that's the way it is. You probably (depending
on your OS and sound card) can get an enable/disable control from the
LINE_IN.

If you are going to be doing any work with JavaSound you need to be on
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