Re: [Alsa-user] Roland AIRA TR-8 USB audio almost works with ALSA . . .

[David W. <reg...@d-...>]

On 07/07/14 10:26, David W. wrote:
> On 07/07/14 07:31, Clemens Ladisch wrote:
>> David W. wrote:
>>> On 06/07/14 20:48, Clemens Ladisch wrote:
>>>> David W. wrote:
>>>>> arecord -D hw:1,0 -f S32_LE -c14 -r96000 -t wav test.wav
>>>>> Recording WAVE 'test.wav' : Signed 32 bit Little Endian, Rate 96000 Hz, Channels 14
>>>>> arecord: pcm_read:2031: read error: Input/output error
>>>>
>>>> Immediately or after 10 seconds?
>>>
>>> After about 13 seconds.
>>
>> This means that the device did not return any error, but did not
>> transfer any samples either.
>>
>> Apparently, this device needs some vendor-specific magic to enable
>> recording.
>>
> 
> Ah. Thanks for the info. It is an unconventional sound device . . .
> 
> Have any other USB audio devices that require vendor-specific magic for
> functionality been successfully made to work with ALSA (or rather has
> ALSA been patched to work with them)?
> 
> I'm guessing a start would be to monitor the USB port in a Windows
> system between the device and the vendor's device driver.
> 

(something I could do)

> Then to apply a patch to ALSA enabling the necessary signals - but
> perhaps that is beyond the remit of ALSA?
> 

(something that I'd need help doing!)