Hannu:
I'm trying to run Skype through pulseaudio. I set up what you said (did
modprobe osscore, oss_audioloop, oss_userdev, depmod -a, finally ossdevlinks
-v -r), but osstest hangs on [Left] and Skype fails with "assertion failed:
pcm->stream."
Here is the result of ossinfo:
Version info: OSS 4.1 (b 1052/200903240610) (0x00040100)
Platform: Linux/i686 2.6.24-24-server #1 SMP Wed Apr 15 16:36:01 UTC 2009
(r2d2)
Number of audio devices: 4
Number of audio engines: 4
Number of mixer devices: 0
Device objects
0: osscore0 OSS core services
1: oss_usb0 USB audio core services
2: oss_audioloop0 audioloop
3: oss_audioloop0 audioloop
4: oss_userdev0 User space audio driver subsystem
Mixer devices
Audio devices
Audio loopback 0 server side /dev/oss/oss_audioloop0/server0 (device
index 0)
(Audio loopback 0 /dev/oss/oss_audioloop0/pcm0 ) (device
index 1)
User space audio device client side /dev/oss/oss_userdev0/client (device
index 2)
User space audio device server side /dev/oss/oss_userdev0/server (device
index 3)
And here is my ~/.asoundrc file:
pcm.skype {
type asym
playback.pcm {
type plug
slave.pcm "hw:0,0"
}
capture.pcm {
type plug
slave.pcm "hw:0,0"
}
}
I've tried changing the addresses (e.g. "hw:0,1"), but I haven't been able
to figure out how to get oss_audioloop or oss_userdev to load as a valid
virtual sound card that passes the osstest.
Thanks very much -- I appreciate any ideas you may have!
Sincerely,
Saketh
On Mon, Jul 13, 2009 at 6:21 PM, Hannu Savolainen <ha...@opensound.com>wrote:
> Saketh wrote:
> > Hi everyone,
> >
> > I have a remote Linux server which doesn't have a sound card, accessed
> > through VNC. Because it doesn't have a sound card, applications that
> > require a sound card (e.g. Skype) fail to run.
> >
> > I am using the server for software-only purposes, such as playing
> > local wave files over VoIP lines. As far as I know, this does not
> > technically require a sound card, though I could be wrong about that.
> >
> > I found on this site
> > (
> http://www.opensound.com/forum/viewtopic.php?p=11745&sid=189e5f1879aac0c28b6883034a2c2faf
> > <
> http://www.opensound.com/forum/viewtopic.php?p=11745&sid=189e5f1879aac0c28b6883034a2c2faf
> >)
> > a mention of oss_audioloop and oss_userdev as potential solutions for
> > this, so I thought that I should ask on this mailing list.
> >
> > To summarize the question -- is it possible to emulate a sound card in
> > software as "hw:0,0" or "/dev/dsp", such that applications will
> > consider it to be a valid sound card?
> It is possible by using oss_audioloop or oss_userdev. The audioloop
> driver is easier to use. You can use "modprobe oss_audioloop" to load
> the driver. Then you can use some (VoIP) application to listen the
> server side device. Any application can use the client side device when
> the server is running.
>
> The limitation of oss_audioloop is that this driver is unidirectional.
> The oss_userdev driver can do full duplex. However the server side
> application needs to be modified to work as an oss_userdev server.
> Unfortunately there is no documentation for this yet. However the
> tutorials/sndkit/userdev_demo/udserver.c sample program demonstrates one
> way to do this.
>
> Best regards,
>
> Hannu
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>
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