'Twas brillig, and Mark Greenwood at 20/03/09 22:53 did gyre and gimble:
On Friday 20 March 2009 21:08:57 Mark Greenwood wrote:
Can I make certain modules 'bind' to certain cards?
I've got an internal sound card and a USB sound card. The USB is
permanently connected. I'd like the internal sound card to be the
default but I'd like module-rtp-recv to 'bind' to the USB card. The
internal card is alsa card 0 and the USB card is alsa card 1.
Is this possible? How would I configure it?
Thanks,
OK, replying to myself again. I found the sink= parameter for
module-rtp-recv.
Now can anybody explain why RTP only works when I leave pavucontrol
open on the sending machine? As soon as I close it the audio goes all
choppy or even disappears altogether.
I'd try and use zeroconf-discovered sinks but I've still not found
out (or had any explanation for) why that causes huge CPU usage.
I reiterate that all this worked perfectly with 0.9.10. 0.9.14 and
greater have been nothing but trouble. I'm currently using tsched=0
if that makes any difference.
Should I just log all these things as bugs and shut up?
I think it's quite good to get an understanding of the problems here,
but adding as bugs is wise too.
As you discovered the rtp stuff works by piggy backing onto another
sink/source.
So if you want to sent the contents of your USB card out over RTP to the
world, you would loaduk module-rtp-send and set the source= argument to
be that of the "monitor" stream of your USB sink.
I have no idea why pavucontrol running would cause things to stablise
but closing it causes things to go awry :s
If you can perhaps provide a simple series of steps including
pactl/pacmd commands to get the same setup as you then I or other users
can test and confirm things?
Col
--
Colin Guthrie
gmane(at)colin.guthr.ie
http://colin.guthr.ie/
Day Job:
Tribalogic Limited [http://www.tribalogic.net/]
Open Source:
Mandriva Linux Contributor [http://www.mandriva.com/]
PulseAudio Hacker [http://www.pulseaudio.org/]
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