Re: [LAU] alsa-jack plugin... some patches.

On 10/29/10 13:07, Paul Davis wrote:
> On Thu, Oct 28, 2010 at 11:08 PM, Robin Gareus <robin@email-addr-hidden> wrote:
>> On 10/29/10 05:00, Paul Davis wrote:
>>> On Thu, Oct 28, 2010 at 10:47 PM, Robin Gareus <robin@email-addr-hidden> wrote:
>>>
>>>> ..but I could not get your .asoundrc working. It fails with
>>>>
>>>> [AO_ALSA] alsa-lib: pcm_hw.c:1293:(snd_pcm_hw_open) open
>>>> '/dev/snd/pcmC0D0p' failed (-16): Device or resource busy
>>>
>>> you're not opening the JACK device, clearly - this message references
>>> /dev/snd/pcmC0D0p
>>
>> I hazard a guess that it's just mplayer with a misleading error message.
>
> i don't think so. i think its you not telling mplayer to use the
> correct ALSA device.
>
>> I prefixed torben's config with
>>
>> pcm.!default {
>> type plug
>> slave { pcm "jack" }
>> }
>
> which confirms my guess since this now makes the default ALSA device
> be the JACK one, and thus apps which open "default" (which they should
> if no other device name is given by the user) will get the JACK one.

Mmh I don't follow. You're say it should work, no?

The problem here is the parsing of the inline 'pcm { .. }' with
@args and $NAME.. If i remove this part or simply do a separate
definition of pcm.jackraw instead of using it inline in pcm.jack it works.

But then the jack-ports are just named "alsa-jack_P*" or "(null)_P*" and
I don't see the client name(s).

From Torben's 'git log 'I see that he only changed jack/pcm_jack.c and
it's 1.0.23 otherwise. Still, the issue could be related that I did not
install all of alsa-plugins but only libasound_module_pcm_jack.so ?!

Anyway the new jack-plug works (tested with skype, firefox/flash &
mplayer) for half a day.

For day-to-day usage I moved away from jack-plug a while ago and am
using snd_aloop with alsa_in/out - it's a bit more heavy on CPU usage
but much more robust.

One remaining issue with jack-plug that I don't have with snd_aloop is
that some clients (fi. firefox) do not close the audio-device.
If the client is still connected to alsa/jack-plug and I re-start jackd,
sound becomes unavailable until the client (here: firefox) is also
restarted.

ciao,
robin

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Received on Fri, 29 Oct 2010 14:42:48 +0200