Re: [Alsa-devel] Re: [OT] ALSA userspace API complexity

René Rebe
2006-01-09T17:12:55Z

Hi,

On Monday 09 January 2006 16:10, Hannu Savolainen wrote:

> > > I don't think so. The library can do such conversions (and alsa-lib does)
> > > quite easy. If we have a possibility to remove the code from the kernel
> > > space without any drawbacks, then it should be removed. I don't see any
> > > advantage to have such conversions in the kernel.
> >
> > Also, when the data is already available as single streams in a user-space
> > multi track application, why should it be forced interleaved, when the hardware
> > could handle the format just fine?
> Because the conversion doesn't cost anything. Trying to avoid it by
> making the API more complicated (I would even say confusing) is extreme
> overkill.

Since when doesn't cost convesion anything? I'm able to count a lot of wasted
CPU cycles in there ...

> Even worse this kind of features weaken the device abstraction provided by
> the API. The applications will have to check for this and
> that and provide support for 100s of special cases that may be required by
> certain devices.

An lame write() only player can still open the default device and get the auto-convert
chain it deserves ...

Yours,
Rene Rebe

--
ExactCODE Berlin