Re: [PATCH 4/4] radio-si470x: Lower firmware version requirements

[Antti Palosaari <crope@iki.fi>]

On 07/05/2012 06:08 PM, Hans de Goede wrote:
> Hi,
>
> On 07/05/2012 04:13 PM, Antti Palosaari wrote:
>> On 07/05/2012 04:41 PM, Hans de Goede wrote:
>>> Hi,
>>>
>>> On 07/05/2012 03:35 PM, Antti Palosaari wrote:
>>>
>>> <snip>
>>>
>>>>> I believe you're doing something wrong ...
>>>>>
>>>>>> I compiled radio from http://git.linuxtv.org/xawtv3.git to tune and
>>>>>  > "arecord  -r96000 -c2 -f S16_LE | aplay - " to play sound. Just
>>>>> silent white noise is heard.
>>>>>
>>>>> You're not specifying which device arecord should record from so
>>>>> likely
>>>>> it is taking
>>>>> the default input of your soundcard (line/mic in), rather then
>>>>> recording
>>>>> from the
>>>>> radio device.
>>>>
>>>> I tried to define hw:1,0 etc. but only hw:0,0 exists.
>>>>
>>>>> Note the latest radio from http://git.linuxtv.org/xawtv3.git will
>>>>> do the
>>>>> digital loopback of
>>>>> the sound itself, so try things again with running arecord / aplay, if
>>>>> you then start radio
>>>>> and exit again (so that you can see its startup messages) you
>>>>> should see
>>>>> something like this:
>>>>>
>>>>> "Using alsa loopback: cap: hw:1,0 (/dev/radio0), out: default"
>>>>>
>>>>> Note radio will automatically select the correct alsa device to record
>>>>> from for the radio-usb-stick.
>>>>
>>>> For some reason I don't see that happening.
>>>
>>> Hmm, so it seems that for some reason alsa is not working with the usb
>>> "sound-card" part of the usb-stick. Can you try doing:
>>>
>>> ls /dev/snd/
>>>
>>> Before and after plugging in the device, you should get a new
>>> PCMC?D0c device there.
>>
>> Two files appears, controlC2 and pcmC2D0c.
>>
>>> Otherwise see if you can enable some debugging options for snd-usb-audio
>>> and find out why it is not liking your device (and maybe at a quirk for
>>> it somewhere) ? If you do end up adding a quirk please let me know
>>> and I'll test with mine to ensure the quirck does not break working
>>> versions :)
>>
>> And now I can hear the voice too using "arecord -D hw:2,0 -r96000 -c2
>> -f S16_LE | aplay -".
>  >
>  > But loopback is still missing.
>
> So if you start radio before starting the arecord, it won't do the
> loopback for you?
> Have you compiled xawtv with alsa support? (this requires the libalsa
> headers to be installed)

aah, that explains.

compile time options summary
============================

     aalib        : no
     alsa         : no
     dv           : no
     QuickTime    : no
     OpenMotif    : no
     X11R6        : no
     OpenGL       : no
     zvbi         : no
     libv4l       : yes
     libexplain   : no

regards
Antti

-- 
http://palosaari.fi/