Re: Baffeled with IllegalArgumentException exception

From:

Knute Johnson <nospam@rabbitbrush.frazmtn.com>

Newsgroups:

comp.lang.java.help

Date:

Wed, 22 Nov 2006 09:33:06 -0800

Message-ID:

<mR%8h.34092$Ll1.15271@newsfe07.phx>

Sundar wrote:

My best guess is that your sound card doesn't support ULAW.

It doesnt look like a hardware issue, coz the exception is thrown
randomly. Sometimes the program works fine and plays the audio
properly. But sometimes it fails with IllegalArgumentException !. If it
is a harware problem the exception will be consistent, But in reality
it isnt!!.

-Sundar

Knute Johnson wrote:

Sundar wrote:

Hi,
Iam using java sound API to play the audio. Iam using the Clip class to
play the audio. Frequently i get the following exception...

java.lang.IllegalArgumentException: No line matching interface Clip
supporting format ULAW 8000.0 Hz, 8 bit, mono, 1 bytes/frame, is
supported.

The exception is thrown in the code line "Targetclip = (Clip)
AudioSystem.getLine(info);"

The code snippet which throws the exception is as follows...

//Converting Audio Format
                if (format.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
                    System.out.println("*** Converting...");
                format = new AudioFormat(
                    AudioFormat.Encoding.PCM_SIGNED,
                    format.getSampleRate(),
                    format.getSampleSizeInBits()*2,
                    format.getChannels(),
                    format.getFrameSize()*2,
                    format.getFrameRate(),
                    true); // big endian
                stream2 = AudioSystem.getAudioInputStream(format, stream2);
                }
                printDebug("((int)stream2.getFrameLength()*format.getFrameSize()):
" + ((int)stream2.getFrameLength()*format.getFrameSize()));
                DataLine.Info info = new DataLine.Info(Clip.class,
stream2.getFormat());
// DataLine.Info info2 = new DataLine.Info(Clip.class,
stream2.getFormat(),
((int)stream2.getFrameLength()*format.getFrameSize()));
                Targetclip = (Clip) AudioSystem.getLine(info);

What could be wrong?? Why this exception is thrown? How do we solve
this??

Any links, sample code OR help in any form is highly appreciate.

Thanks in advance

-Sundar

My best guess is that your sound card doesn't support ULAW.

--

Knute Johnson
email s/nospam/knute/

I'm not sure then what the problem is. If you want to post a simple
test program that will show the problem, I'd be happy to play with it.

--

Knute Johnson
email s/nospam/knute/