[MPlayer-dev-eng] Practical outcomes of the ALSA thread

Sven Gothel sgothel at jausoft.com
Sat May 5 00:09:30 CEST 2007


On Friday 04 May 2007 at 12:53, Attila Kinali wrote:
> On Fri, 4 May 2007 12:55:06 -0400
> Rich Felker <dalias at aerifal.cx> wrote:
> 
> > 2. Desire to use ALSA-specific features (soft mixing? etc.?) with
> > MPlayer.
> 
> This is actually for me a downside of alsa. I do not want
> to have any automagic stuff working behind my back wich
> does not tell me at all that it's doing something.
> 
> For the common case raised a few times in the discussion
> that a soundcard doesnt support a certain sampling rate
> and thus needs resampling is for me _the_ point why it
> shouldn't be done by alsa. Imagine that MPlayer resamples
> the sound for some reason (either because the user wanted
> it or because alsa told it that it doesn't support the
> sampling rate of the source file), then we would end up
> with two resampling operations, and hence with a lot of
> quality los.
> 

so .. there must be a way in ALSA 
to determine who is capable of what:
	alsa hw: freq/channels/..
	alsa lib: ...

query the values and decide what to do ..

Cheers, Sven

> 				Attila Kinali
> 



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