Subject: Re: [linux-audio-dev] Plugin APIs (again)
From: Tim Hockin (thockin_AT_hockin.org)
Date: Fri Dec 13 2002 - 04:07:44 EET
> > newchannel_idx = plug->new_channel(channel_descriptor_idx); The
> But the host is allowed to assume that it is in fact an *index*; not
> just a cookie?
I guess no, it doesn't matter - it's a cookie.
> I see. (No problem as long as there is no assumption that anything is
> both an input and an output and that kind of stuff.)
No, each port is an in or an out
> How about a mixer with variable insert count? There are several ways
> to implement that, but I can't think of one that doesn't require
> either that dreaded "link" feature, or an extra level of "grouping"...
I prefer not to tie the model to hardware like that: I prefer to think of
the insert effects as coming before the mixer in the chain. I think it's
just simpler.
> So, you basically have a bunch of control channel descriptions and a
> bunch of io channel descriptions, and then the host can test for
> valid combinations of those when adding new channels?
That's what I was saying. I'm not sure it's really useful.
I need to digest the rest of this email. I'll have a new version of the
header with most of what we've been discussing in one form or another
hopefully tonight. Then we can keep banging out details.
Tim
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