Re: [xine-user] need mono -> stereo fallback

[Owen W. <yw...@us...>]

On Sat, 2002-03-09 at 07:12, Guenter Bartsch wrote:
> Hi Owen,
> 
> On 9 Mar 2002, Owen Williams wrote:
> 
> > the soundcard on my laptop, an i810, interestingly doesn't support mono
> > mode, only stereo.  Thus, when xine tries to play a mono file, it fails
> > to initialize the sound.  I can use the alsa drivers, but they have
> > latency issues.  From what I've read online, Alan Cox and company seem
> > to think it's the responsibility of the user space to deal with this
> > issue.  Other programs (plaympeg) deal with this, as I can hear the
> > sound on mono files.  Therefore, can the developers add a simple
> > fallback whereby a mono stream is converted to stereo by simply doubling
> > the stream?

> however as a side note I'd like to mention that this is a bit contrary to
> what dobly recommends, their basic principle is to never up-mix channel
> but only to downmix them

Well as I said, I looked through some kernel mailinglist archives, and
Alan Cox insists that such things should not be done in the driver, it
would add clutter.  Or something.  And so, it is supposedly the
responsibility of user-space apps to deal with this.  I dunno, the
solution for xine seems easy enough.

owen