recording spdif with ice1724 chipset

[Ian Malone]

On 6/2/06, Ian Malone <ibmalone at gmail.com> wrote:
> Hi,
>
> I'm trying to work out how to record from an S/PDIF input
> using a Terratec 7.1 Space (Envy24 based card, supported by
> ICE1724 Alsa driver).  I simply can't work it out.
>
> Under Windows it's necessary to use the Terratec control
> panel to select S/PDIF as the recording source (rather
> than the analogue mixer/sources).  What I think I should
> do under Linux is something like:
>
> $ arecord -f dat test.wav -Dhw:0,1
>
> This gives:
> Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz,
> Stereo
> arecord: set_params:901: Sample format non available
>

>
> $ arecord -l
> **** List of CAPTURE Hardware Devices ****
> card 0: T71Space [Terratec Aureon 7.1-Space], device 0: ICE1724 [ICE1724]
>    Subdevices: 1/1
>    Subdevice #0: subdevice #0
> card 0: T71Space [Terratec Aureon 7.1-Space], device 1: IEC1724 IEC958
> [IEC1724 IEC958]
>    Subdevices: 1/1
>    Subdevice #0: subdevice #0
>

Okay, so far I've got
$ arecord -f dat test.wav -Dplughw:0,1

The plughw being necessary (AFAICT) to do some alsa magic
that converts the driver's native S32_LE to whatever dat/cd
et al use (S16_LE?).

However, while it appears to record, this just captures silence,
though the equivalent -Dplughw:0,0 does successfully record
from linein.

(I've also subscribed to alsa-user to discuss this, but my posts
don't seem to be going through there for some reason)

-- 
imalone