User-space ALSA driver?

User-space ALSA driver?

[Fredrik Tolf]

Hi!

(Please CC me, I'm not on the list)

I've been googling around a bit for a user-space ALSA driver (meaning an
ALSA driver that allows a user-space program to act as the "hardware"),
but I've been unable to find one.

It seems strange to me that no such driver would exist. Does anyone on
the list know of any such driver? I was just about to start writing one
myself, but I thought I'd better check with the list first, just in case
I missed it.

Fredrik Tolf




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Re: User-space ALSA driver?

[Marcel Holtmann]

Hi Fredrik,

> I've been googling around a bit for a user-space ALSA driver (meaning an
> ALSA driver that allows a user-space program to act as the "hardware"),
> but I've been unable to find one.
> 
> It seems strange to me that no such driver would exist. Does anyone on
> the list know of any such driver? I was just about to start writing one
> myself, but I thought I'd better check with the list first, just in case
> I missed it.

you should search for the keywords ALSA SDK in the mailing list archive.

Regards

Marcel




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Re: User-space ALSA driver?

[Takashi Iwai]

At Mon, 14 Mar 2005 03:00:24 +0100,
Fredrik Tolf wrote:
> 
> Hi!
> 
> (Please CC me, I'm not on the list)
> 
> I've been googling around a bit for a user-space ALSA driver (meaning an
> ALSA driver that allows a user-space program to act as the "hardware"),
> but I've been unable to find one.
> 
> It seems strange to me that no such driver would exist. Does anyone on
> the list know of any such driver? I was just about to start writing one
> myself, but I thought I'd better check with the list first, just in case
> I missed it.

Check alsa-plugins CVS repository.  It includes JACK and OSS
"user-space" drivers.  Also, the bluez CVS includes the ALSA plugin,
too.


Takashi


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Re: User-space ALSA driver?

[Fredrik Tolf]

On Mon, 2005-03-14 at 16:21 +0100, Takashi Iwai wrote:
> At Mon, 14 Mar 2005 03:00:24 +0100,
> Fredrik Tolf wrote:
> > (Please CC me, I'm not on the list)
Again, please.
> > 
> > I've been googling around a bit for a user-space ALSA driver (meaning an
> > ALSA driver that allows a user-space program to act as the "hardware"),
> > but I've been unable to find one.
> > 
> > It seems strange to me that no such driver would exist. Does anyone on
> > the list know of any such driver? I was just about to start writing one
> > myself, but I thought I'd better check with the list first, just in case
> > I missed it.
> 
> Check alsa-plugins CVS repository.  It includes JACK and OSS
> "user-space" drivers.  Also, the bluez CVS includes the ALSA plugin,
> too.

Thanks, but that wasn't really what I wanted. I really do want a kernel
driver that plugs back to user-space. I realize that the preferred way
to do ALSA userspace drivers is to make a libasound plugin, but without
a kernel driver, I can't get OSS emulation (right?).

Should I take your reply as an indication that I'll have to write that
driver myself?

Thanks for your reply!
Fredrik Tolf




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Re: User-space ALSA driver?

[Takashi Iwai]

At Mon, 14 Mar 2005 16:30:37 +0100,
Fredrik Tolf wrote:
> 
> On Mon, 2005-03-14 at 16:21 +0100, Takashi Iwai wrote:
> > At Mon, 14 Mar 2005 03:00:24 +0100,
> > Fredrik Tolf wrote:
> > > (Please CC me, I'm not on the list)
> Again, please.
> > > 
> > > I've been googling around a bit for a user-space ALSA driver (meaning an
> > > ALSA driver that allows a user-space program to act as the "hardware"),
> > > but I've been unable to find one.
> > > 
> > > It seems strange to me that no such driver would exist. Does anyone on
> > > the list know of any such driver? I was just about to start writing one
> > > myself, but I thought I'd better check with the list first, just in case
> > > I missed it.
> > 
> > Check alsa-plugins CVS repository.  It includes JACK and OSS
> > "user-space" drivers.  Also, the bluez CVS includes the ALSA plugin,
> > too.
> 
> Thanks, but that wasn't really what I wanted. I really do want a kernel
> driver that plugs back to user-space. I realize that the preferred way
> to do ALSA userspace drivers is to make a libasound plugin, but without
> a kernel driver, I can't get OSS emulation (right?).

You can use aoss wrapper.

> Should I take your reply as an indication that I'll have to write that
> driver myself?

If you want :)


Takashi


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