Re: Problem with RME 9632 and Plug

[Takashi Iwai <tiwai@suse.de>]

At Wed, 4 Aug 2004 12:56:28 +0200 (CEST),
Jaroslav wrote:
> 
> On Wed, 4 Aug 2004, Takashi Iwai wrote:
> 
> > Well, HDSP needs at least 14 non-interleaved channels, so we'll need
> > anyway the conversion for normal apps like mplayer.  Then no external
> > timinig source would be needed.
> 
> I don't undestand this. As far as I know, RME cards have 64kB ring buffer 
> for all voices and the two periods constraint is for all voices. Thus 
> there is no correlation between the used channel count and period size.
> The timing is same.

I mean, we need anyway convert the format and the interleave ->
non-interleave in this case.  In comparison with this, introducing an
intermedate buffer with an arbitrary size doesn't influence on the
performance so much.

I don't think to do this in plug as default.  But it would be nice to
have this layer for devices with the limited periods and/or buffer
size (of course only if the extra data transfer doesn't matter).


Takashi


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