Re: Problem with RME 9632 and Plug

[James Courtier-Dutton <James@superbug.demon.co.uk>]

Ed Wildgoose wrote:
> 
> I'm not sure what you are saying here.  I have the source code in front 
> of me in an editor, but I physically can't set the options correctly - 
> the driver just rejects them?
> 
> The issue is the heuristic - I appear to have to try for the period size 
> first, then set the number of periods (fails if I do it the other way 
> around), however, if I then discover the number of periods * period size 
> is lower than I would like, I cant go and adjust these settings (alsa 
> returns errors).
> 

Why don't you use the alsa api more fully.
You can gather information about min/max period/buffer sizes before 
setting any values.
This is not 100% certain to work, as alsa hardware contraints can be 
extremely complicated if the hardware so desires.

But I do think that the setting of period_size/time, buffer_size/time 
and periods has always been problematic in alsa.

Being able test different period and buffer sizes without having to 
close/open the device would be a useful addition to the alsa api.

Cheers
James


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