Thomas Charbonnel wrote:
You have to understand that software outputs are not directly related to physical outputs. On simpler hardware, software and physical outputs can be considered the same. On the hdsp system, thanks to the internal matrix mixer, software outputs are totally abstracted from physical ones. On the multiface you have 18 software outputs, each of wich can be independently routed to any of the 18 physical outputs. For convenience, the hdsp linux driver's default behaviour is to have a 1:1 routing policy: each software output is by default routed to to corresponding hardware output. So the "numid=5 26,26,16384" line says: connect software output 1 (called "playback" in the above table) to line out left, as the syntax of the call is input_source,output_source,value.
Great explanation. I have added it as an editors note on the hdsp page. so it's default is a fifo? i.e software output 26 -> analog output 1 software output 27 -> analog output 2.... Therefore can I do this? numid=5 26,0,16384 numid=5 27,1,16384 numid=5 28,2,16384 numid=5 29,3,16384 numid=5 30,4,16384 numid=5 31,5,16384 numid=5 32,6,16384 numid=5 33,7,16384 Or is that the default setting (except with no volume).
Getting there. So we have to tell the control called numid=5 to route the output from software 1 to line out before we can hear it through line out?Here it looks like you're mixing up the amixer numid parameter number with the hdsp internal channel numbers. Numid 5 is the actual alsa matrix mixer control. Numid 10 is the global line out switch. Numid 26 and 27 are read only, and correspond to the internal peak and rms calculation the card does to provide a 0% CPU metering solution (to be used in the forthcoming HDSPMixer totalmix clone !...) I hope this makes things clearer.
Can we route multiple software outputs to the same hardware output?
eg. numid=5 26,26,16384
numid=5 27,27,16384
numid=5 28,26,16384
numid=5 29,27,16384
numid=5 30,26,16384
numid=5 31,27,16384
numid=5 32,26,16384
numid=5 33,27,16384
Or is that what the .asoundrc is for?
--
Patrick Shirkey - Boost Hardware Ltd.
For the discerning hardware connoisseur
Http://www.boosthardware.com
Http://www.djcj.org - The Linux Audio Users guide
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Being on stage with the band in front of crowds shouting, "Get off! No! We want normal music!", I think that was more like acting than anything I've ever done.
Goldie, 8 Nov, 2002
The Scotsman
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