Re: [Alsa-devel] hdsp multiface pci.

[Patrick Shirkey]

Thomas Charbonnel wrote:

On Sun, 2003-01-19 at 13:08, Patrick Shirkey wrote:

Using latest cvs, I have been trying to get this device working for my friend. We have had some success but it is unreliable.

We could get sound out of the lineout port after using this command

amixer -D hw:0 cset numid=5 0,0,16384

This is supposed to route the signal received on analog input 1 to
analog output 1.

numid=5,iface=PCM,name='Mixer'
  ; type=INTEGER,access=rw---,values=3,min=0,max=65536,step=1
  : values=16384,0,0

Using

 	numid=5 26,26,16384
 	numid=5 27,27,16384

The above should indeed be the correct way to route software playback
channels 1-2 to the line outs (jack's alsa_pcm:playback_1 and _2, for
example).

Sorry I'm not fully grasping this. Why are 26 and 27 directly related to alsa_pcm:playback_1 and _2?

I thought from reading the notes on the hdsp page that pcm1 and pcm2 would be numbers 0 and 1 not 26 and 27.

eg.
======
Since the Multiface only have 18 i/o channels, the channel mapping in
the matrix mixer is different from the Digiface when operating at 48kHz
or lower.

input_source: 0-7 (analog), 16-23 (adat), 24-25 (spdif), 26-51 (playback)
output_source: 0-7 (analog), 16-23 (adat) 24-25 (spdif), 26-27 (line out)
======

See how it says 0-7 (analog)?

I haven't found an explanation for the following in the docs describing how to use the amixer app so could you please clarify this for me?

What is this line saying?

numid=5 26,26,16384

something like:

connect 26 to 5 with a volume of 16384

or
 	numid=5 10,10,16384 <<<--- 10 appears to be line out id

What makes you say so ?

These are the id's in question:

numid=5,iface=PCM,name='Mixer'
; type=INTEGER,access=rw---,values=3,min=0,max=65536,step=1
: values=16384,0,0

numid=10,iface=PCM,name='Line Out'
; type=BOOLEAN,access=rw---,values=1
: values=on

numid=26,iface=PCM,name='Playback Peak',index=3
; type=INTEGER,access=r----,values=2,min=0,max=0,step=0
: values=0,0

numid=27,iface=PCM,name='Playback RMS',index=3
; type=INTEGER64,access=r----,values=1,min=0,max=0,step=0
: values=0



--
Patrick Shirkey - Boost Hardware Ltd.
For the discerning hardware connoisseur
Http://www.boosthardware.com
Http://www.djcj.org - The Linux Audio Users guide
========================================

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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