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* plughw versus hw (fwd)
@ 2003-07-30 20:32 barat
  2003-07-31  9:02 ` Måns Rullgård
  0 siblings, 1 reply; 2+ messages in thread
From: barat @ 2003-07-30 20:32 UTC (permalink / raw)
  To: alsa-devel

hi,
i read that plughw does some magic conversion for samplerate and stuff. 
how does this magic work. whats the main differenc in the concept of hw 
and plughw. 

thanx and regards

joy

________________________________________
do interactive tv on www.remote-tv.de


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^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: plughw versus hw (fwd)
  2003-07-30 20:32 plughw versus hw (fwd) barat
@ 2003-07-31  9:02 ` Måns Rullgård
  0 siblings, 0 replies; 2+ messages in thread
From: Måns Rullgård @ 2003-07-31  9:02 UTC (permalink / raw)
  To: alsa-devel

barat@medien.uni-weimar.de writes:

> i read that plughw does some magic conversion for samplerate and stuff. 
> how does this magic work. whats the main differenc in the concept of hw 
> and plughw. 

hw interfaces directly to the physical card.  Thus you can only use
modes supported by the hardware.  plughw will detect whether the
hardware can do what you are requesting, and automatically convert the
data to something that can be played, at the expense of CPU time.

-- 
Måns Rullgård
mru@users.sf.net



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