Re: reading sound card output?

From:
 mail.flacco@gmail.com
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 27 Sep 2007 22:03:31 -0700
Message-ID:
<1190955811.429031.107560@y42g2000hsy.googlegroups.com>
I realized I omitted some info: I'm only getting 3 lines showing up on
your program.

Also, I wrote the following program to see if I could get a valid
speaker port and record from it. The port was valid, but I can't
record. I assume that's because as a port the speaker is play only,
not record.

//////////////////////////////
import javax.sound.sampled.*;
import java.io.*;

public class Test {
    public static void main(String args[])
    {
     Mixer.Info[] mixerInfo = AudioSystem.getMixerInfo();
     AudioFormat audioFormat = new AudioFormat(
     AudioFormat.Encoding.PCM_SIGNED,
     44100.0F, 16, 2, 4, 44100.0F, false);

     Port.Info portInfo = new Port.Info(TargetDataLine.class,
     Port.Info.SPEAKER.getName(), false);
     DataLine.Info dataLineInfo = new
DataLine.Info(portInfo.getLineClass(),
     audioFormat);
     Mixer mixer = AudioSystem.getMixer(mixerInfo[3]);

     TargetDataLine targetDataLine = null;
     try {
     targetDataLine = (TargetDataLine)mixer.getLine(dataLineInfo);
     targetDataLine.open(audioFormat);
     } catch ( Exception e) { System.out.println("E: "+e); }
     int numBytesAvailable = targetDataLine.available();

        BufferedReader br = new BufferedReader(new
InputStreamReader(System.in));
        String exitQ = null;

      targetDataLine.start();
     while(true) {
     byte tempBuffer[] = new byte[10000];

     targetDataLine.read(tempBuffer, 0, tempBuffer.length);
     System.out.println(tempBuffer.toString());
     System.out.println("# bytes available = "+numBytesAvailable);

     try {
     exitQ = br.readLine();
     } catch (IOException ioe) {
     System.out.println("IO error trying read exit code!");
     System.exit(1);
     }
     if (exitQ.charAt(0)=='e') { System.out.println("Goodbye");
System.exit(1); } //type e to exit
     }
    }
}

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