Problems capturing audio under linux

Hello. I have developed an application that captures audio using the Audio API of JFM. The problem is when I start capturing audio under Linux (all the audio devices are well configurated), the JVM returns the following error:
java.lang.IllegalArgumentException : Illegal request to write non integral numbre of
frames (13107 bytes)
The piece of code that causes the error is :
while(!stop) {
numBytesRead = inputLine.read(data,0, data.length); bufferoutput.write(data,0,
numBytesRead); }
where inputLine is a TargetDataLine.
Under Windows this runs OK. Anyone know why not under Linux?
Thanks

Hi!
I'm developing a videoconferencing application on Linux and I can't
capture audio; I get messages like these: "couldn't initialize audio device"
or " or "java.io.IOException: Cannot open audio device for input." from JMStudio.
Have you got any idea about the problem ?
Thankyou.

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Problem capturing audio

Hello!!
I am trying to capture audio using jmf 2.1.1.e in Linux (SuSE 8.1) with jdk 1.4.2_04. I have "alsa" properly installed. However, when I try to capture using jmstudio, I am shown "javaSound audio", LINEAR, 44100 Hz, 16 bits, stereo, little endian and after cliking OK I get :"Could't initialize the Capture Device".
I also try to run a code to capture audio, using the following:
Vector audioDevices = CaptureDeviceManager.getDeviceList(new AudioFormat(AudioFormat.LINEAR, 44100, 16, 2));
CaptureDeviceInfo audioCDI = (CaptureDeviceInfo)audioDevices.elementAt(0); //I get javaSound
ds = Manager.createDataSource(audioCDI.getLocator());
processor = javax.media.Manager.createProcessor(ds);
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LINEAR, 44100.0 Hz, 16-bit, Stereo, LittleEndian, Signed
LINEAR, 44100.0 Hz, 16-bit, Mono, LittleEndian, Signed
LINEAR, 22050.0 Hz, 16-bit, Stereo, LittleEndian, Signed
LINEAR, 22050.0 Hz, 16-bit, Mono, LittleEndian, Signed
LINEAR, 11025.0 Hz, 16-bit, Stereo, LittleEndian, Signed
LINEAR, 11025.0 Hz, 16-bit, Mono, LittleEndian, Signed
LINEAR, 8000.0 Hz, 16-bit, Stereo, LittleEndian, Signed
LINEAR, 8000.0 Hz, 16-bit, Mono, LittleEndian, Signed
Audio not supported: interface TargetDataLine supporting format PCM_SIGNED, 44100.0 Hz, 16 bit, stereo, little-endian, audio data, and buffers of 22050 to 22050 bytes
Audio not supported: interface TargetDataLine supporting format PCM_SIGNED, 44100.0 Hz, 16 bit, stereo, little-endian, audio data, and buffers of 22050 to 22050 bytes
java.io.IOException: Cannot open audio device for input.
javax.media.NoDataSourceException: Error instantiating class: com.sun.media.protocol.javasound.DataSource : java.io.IOException: Cannot open audio device for input.
at javax.media.Manager.createDataSource(Manager.java:1012)
at AVTransmit2.createProcessor(AVTransmit2.java:136)
at AVTransmit2.start(AVTransmit2.java:54)
at AVTransmit2.main(AVTransmit2.java:553)
Exception in thread "main" java.lang.NullPointerException
at AVTransmit2.waitForState(AVTransmit2.java:460)
at AVTransmit2.createProcessor(AVTransmit2.java:188)
at AVTransmit2.start(AVTransmit2.java:54)
at AVTransmit2.main(AVTransmit2.java:553)
Has anybody ever had this problem?? Do you know where the problem is? Do you know how to solve it??
Could you be so kind as to help me, please???
Thank you very much in advance.

Hi wew64.
I m new to JMF. I just made a simple media player not any more. can you please tell me what is "alsa" and "arts".
actually I want to control my Sound card properties like "Microphone, Line In, etc...." is it possible in java if it is please tell me.
I will be very thankful to you
I m very upset about it because it is minimum 3-weeks late, my project is pending on this stage. All i want to do, just to mute the volume of "line in" (property in my sound card, which takes audio data from a TvTunner card and leaves this audio data out to the speakers.)so that only the audio from my computer's( any application like media player) can goes to the speakers, not the audio comming from the TvTunner(My TvTunner is opperated by the application provided by the vendor, I did not develop this on my own in java. I just made my media player in java). Yes this is the PROBLEM that both audios from TvTunner card and from My Application are being transmitted to speakers simultanously. But i want, when my application is running, the audio comming from TvTunner should be muted and when my application is exited, the TvTunner's audio should be unmuted. And this is only done by Line In property because Audio from TvTunner card is got by the Sound card through the Line In property.
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http://www.gdargaud.net/

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Strange. Please post the exception and the full stack trace here.
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Zac Burke wrote:
Hi,
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the same code between NT machines and Solaris machines. As soon as I
introduce the Linux machine into the equation , I start getting this.
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Thanks.--
Developer Relations Engineer
BEA Support

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