[alsa-devel] Fwd: Adding support for CMEDIA USB2.0 High-Speed True HD Audio

[Jean-Philippe Guillemin]

---------- Forwarded message ----------
From: Jean-Philippe Guillemin <h1p8r10n at gmail.com>
Date: 2018-02-06 10:57 GMT+01:00
Subject: Re: [alsa-devel] Adding support for CMEDIA USB2.0 High-Speed True
HD Audio
To: Clemens Ladisch <clemens at ladisch.de>




2018-02-06 10:33 GMT+01:00 Clemens Ladisch <clemens at ladisch.de>:

> (please don't top-post)
>
> Jean-Philippe Guillemin wrote:
> > # aplay -l
> > card 0: Audio [USB2.0 High-Speed True HD Audio], device 0: USB Audio
> [USB Audio]
> > card 0: Audio [USB2.0 High-Speed True HD Audio], device 1: USB Audio
> [USB Audio #1]
> > card 0: Audio [USB2.0 High-Speed True HD Audio], device 2: USB Audio
> [USB Audio #2]
>
> So "aplay -D plughw:0,2 something.wav" works correctly?
>

Yes, indeed, I've got sound through the SPDIF output interface


>
> >> I'm trying to create a mapping in USB-Audio.conf :
> >>  # If a device does not use the first PCM device for digital data, the
> device
> >>   # number for the iec958 device can be changed here.
> >>   USB-Audio.pcm.iec958_device {
> >>      # "NoiseBlaster 3000" 42
> >>      "USB Sound Blaster HD" 1
> >>      "USB2.0 High-Speed True HD Audio" 2
> >>   ...
> >>
> >> But I never got a match on "USB2.0 High-Speed True HD Audio".
>
> What exactly happens when you try "aplay -D iec958 something.wav"?
>

 No sound through SPDIF output interface :

aplay -D iec958 foo.wav
Playing WAVE 'foo.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo




>
> Regards,
> Clemens
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