Re: LineUnavailableException when trying to play .wav file
- From: Scott <blackhole@xxxxxxxxxxx>
- Date: Mon, 30 Apr 2007 18:03:40 +0100
Andrew Thompson wrote:
Scott wrote:I'm trying to play a simple .wav file ..
What do you mean by 'simple'?
..using code copied from:..PCM_SIGNED 22050.0 Hz, 16 bit, mono, 2 bytes/frame, little-endian
javax.sound.sampled.LineUnavailableException: line with format PCM_SIGNED 22050.
0 Hz, 16 bit, mono, 2 bytes/frame, little-endian not supported.
That message is saying that Java does not support that format.
WinAmp plays the .wav file without any problems.
WinAmp will play almost anything.
I have MP3's that both WinAmp and the JMStudio will play, while I have others that can only be played by WinAmp. The same for MIDI files (and I expect,
WAV files).
I can even play it using the DirectSound code in:
http://msdn.microsoft.com/archive/en-us/dnarsound/html/msdn_streams3.asp?frame=true
That code digs directly into the Windows based system - it would not work cross-platform, so
Java does not work that way.
If I understand correctly Java is using DirectSound so think I've shown that the Windows DirectSound interface is OK.
Is this just a problem with windows 98 or is there something I'm over looking?
Try whis WAV file, which has been seen to be
'Java compatible'
<http://www.physci.org/test/oscilloscope/sounds/101_0166.wav>
Same problem:
PCM_UNSIGNED 16000.0 Hz, 8 bit, mono, 1 bytes/frame,
javax.sound.sampled.LineUnavailableException: line with format PCM_UNSIGNED 16000.0 Hz, 8 bit, mono, 1 bytes/frame, not supported.
at com.sun.media.sound.DirectAudioDevice$DirectDL.implOpen(Unknown Source)
at com.sun.media.sound.AbstractDataLine.open(Unknown Source)
at com.sun.media.sound.AbstractDataLine.open(Unknown Source)
at AudioPlayer02$PlayThread.run(AudioPlayer02.java:146)
The JMF (especially the Performance Pack) will bring
support for more codecs (types) of more formats, but
even that only covers a relatively small number of sound
types.
Thanks for your input, I've just downloaded JMF and I can play .wav files using JMStudio but the small test program still has the same problem. I think it must be a configuration issue.
.
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