<Sound Dev> Opening multiple output lines

[Thomas Fitzsimmons]

Hi,

I've attached the output of running AudioSystemGetLineTest against 
openjdk-6-src-b09-11_apr_2008 with USE_TRACE defined, and the description of my 
sound card reported by lspci -vv.

Tom

Juraj Svec wrote:
> Hi,
> could you please send some more information? Output of the 
> TRACE1("Opening ALSA device %s\n", buffer); above the snd_pcm_open would 
> be great and also your sound card type and version will definitely help.
> 
> Thanks,
> 
> Juraj
> 
> 
>  > Hi,
>  >
>  > I'm testing a sound-using applet on Fedora 8.  Sun JDK 1.6 runs the 
> applet
>  > correctly but OpenJDK does not.  The applet attempts to open two 
> audio playback
>  > lines in succession, without closing the first before attempting to 
> open the
>  > second.  The first open attempt succeeds but the second attempt fails 
> with:
>  >
>  > javax.sound.sampled.LineUnavailableException: line with format 
> PCM_SIGNED
>  > 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian not supported.
>  >          at
>  > 
> com.sun.media.sound.DirectAudioDevice$DirectDL.implOpen(DirectAudioDevice.java:511) 
> 
>  >          at 
> com.sun.media.sound.AbstractDataLine.open(AbstractDataLine.java:124)
>  >          at 
> com.sun.media.sound.AbstractDataLine.open(AbstractDataLine.java:156)
>  >          at PAPU.start(PAPU.java:198)
>  >          at NES.enableSound(NES.java:390)
>  >          at AppletGui.init(AppletGui.java:38)
>  >          at sun.applet.AppletPanel.run(AppletPanel.java:435)
>  >          at java.lang.Thread.run(Thread.java:674)
>  >
>  > The exception message is misleading since the line format is 
> supported.  The
>  > actual cause of the failure is in:
>  >
>  > PLATFORM_API_LinuxOS_ALSA_PCMUtils.c:openPCMfromDeviceID
>  >
>  > This call:
>  >
>  >      ret = snd_pcm_open(handle, buffer,
>  > isSource?SND_PCM_STREAM_PLAYBACK:SND_PCM_STREAM_CAPTURE,
>  >                         SND_PCM_NONBLOCK);
>  >
>  > returns the error corresponding to "Device or resource busy".
>  >
>  > The attached test case demonstrates the failure.
>  >
>  > Tom
>  >
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