[pulseaudio-tickets] [PulseAudio] #624: need proper support for Terratec EWS88-MT (ice1712)

[PulseAudio]

#624: need proper support for Terratec EWS88-MT (ice1712)
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  Reporter:  aelschuring  |       Owner:  lennart          
      Type:  defect       |      Status:  new              
 Milestone:               |   Component:  module-alsa-*    
Resolution:               |    Keywords:  ews88 profile-set
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Comment(by aelschuring):

 Replying to [comment:24 lennart]:
 > https://bugzilla.redhat.com/show_bug.cgi?id=499435

 Thanks for the link. Of course, I only started to read that one after I
 had searched the Alsa-devel mailing archives :|

 With the patch from
 http://thread.gmane.org/gmane.linux.alsa.devel/59481/focus=59672 , I can
 get ALSA to offer a true two-channel front device, and have pulseaudio use
 it succesfully:

 {{{I: source.c: Created source 0 "alsa_output.pci-0000_00_0c.0.analog-
 front-out.monitor" with sample spec s16le 2ch 44100Hz and channel map
 front-left,front-right}}}

 The problem is - and that is very much the same issue as debated in the
 thread above - that the ICE1712 cards basically offer five separate stereo
 output channels, and six separate stereo input channels. That's a multi-
 channel configuration that does not fit in the whole "surround
 sound"-oriented multi-channel definition, and I'm not sure how we should
 want those channels to be exposed. Compounding the issue is that not all
 cards based on this chip have the same number of outputs...

 It is fairly trivial to create a patch to alsa-lib that at least fixes the
 front: device, but I'm not sure how to address other configurations,
 especially when considering the fact that two-channel cards based on this
 chip also exist.

-- 
Ticket URL: <http://pulseaudio.org/ticket/624#comment:26>
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