[gmpi] Re: Topic 7: Audio packaging

> Ah, so it's *only* about connection negotiation?

I think so, yes.

> I hope we're not talking about actual structures at the "DSP level". 
> Pins/ports or whatever we call them should always be mono, IMO. We 
> could have elaborate XML descriptions or whatever to figure out how 
> to connect things, but I don't see any need to bring it down to the 
> low (ie process() call) levels of the API.

Not clear - the way I THINK I'm being argued against is this:  A connection
is one of several defined types.  A connection ALWAYS connects all wires of
that connection.

That is to say, if you have a 5.1 connection, you always get all 6 signals.
If you have a stereo connection, you always get 2 signals.

> > Within each connection (think of it is a multi-signal wire)
> 
> (What I've called "cable" at times in the XAP dicussion.)

yes, and this unit is atomic UNLESS it is run through some converter to N
mono channels (which the host CAN do automagically).  

> Consider physical cables with wire insulation in different colors. 
> That makes it possible to merge cables without knowing anything about 
> the signals. But if you have two cable ends with the same number of 
> wires, and the same colors, it *might* just be a coincidence that the 
> colors are the same. The cables don't *have* to be compatible.

You can't bundle or unbundle wires except into proper formats.  One such 
format is the N-signal - N mono signals.  Anything higher level is left for 
the host.


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