At Wed, 02 Aug 2006 21:31:18 +0400,
Krivenok Dmitry wrote:
>
>
>
> -----Original Message-----
> From: Takashi Iwai <tiwai@xxxxxxx>
> To: Krivenok Dmitry <_asr_@xxxxxxxx>
> Date: Wed, 02 Aug 2006 18:26:52 +0200
> Subject: Re: Virtual sound card
>
> >
> > At Wed, 02 Aug 2006 16:16:03 +0400,
> > Krivenok Dmitry wrote:
> > >
> > > Hello All!
> > >
> > > What is the simplest way to implement virtual sound card?
> > > Special kernel module, which represents virtual device driver? Special plugin?
> > > Or something else?
> >
> > How about JACK?
> >
> > We have already some alsa-lib plugins, such as file plugin.
> > You can record a PCM stream to a file while using another real
> > device.
> >
>
> Yes, I know about file plugin.
> It works fine with commands like this:
> aplay -D file myfile.wav
>
> Unfortunately, I don't know how to use it with Skype (new version, which supports ALSA).
> Skype supports real cards (e.g. my VIA8233) and virtual cards (e.g. dummy), i.e.
> devices with ALSA interface.
> But "file" isn't ALSA-device.
So, skype checks only the devices of kernel drivers? And no way to
edit it manually?
Sigh, we really have to provide a good API for the device
enumeration.
> How to combine file plugin with alsa-device? Is it possible at all?
It's hackish but possible. You can override "hw" and/or "plughw"
definition as you like, such as
pcm.!hw {
type file
slave.pcm {
type hw
card 0
}
file "foo.out"
}
Takashi
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