Hi Kris, and welcome,
On Fri, Jan 23, 2009 at 4:37 PM, Kris Lipscombe <[email protected]> wrote:
> However there's two minor issues. The first is that my log if
> continually full of '[src_3490:2] Underrun! You may minimize them by
> increasing the buffer size.' The only two inputs I have are a alsa input for
> our studio and a last.fm input for fallback. Both of these have appropriate
> IDs. The message doesn't seem to effect the output, so I'm not to worried
> about it. However if someone could help me remove it from the log I would be
> very grateful.
Indeed, these messages are harmless as long as they don't appear too
often. Even then, they just say that ALSA does not get data fast
enough to produce a clean continuous output, which has no effect at
all on the icecast output -- which probably matters most for you.
Concerning the silly ID src_XXXX, I noticed it on unbuffered ALSA
outputs by default. I didn't bother to fix... I should stop being
lazy. However, if I set the id explicitly output.alsa(id="foo",..) I
don't get them anymore. Could you tell me what version of liquidsoap
you have and how exactly you setup you ALSA input/output(s)?
> The second question I have is to do with fallback notification. Currently I
> have my config set to strip the blanks from the alsa input so that silence
> in the studio causes a fallback to last.fm. However I was wondering if there
> was anyway to explicitly call a script on the transition?
You can execute arbitrary code in the transition. Suppose we have a
fallback as follows:
fallback([foo,bar])
This is the same as:
def f(a,b)
sequence([a,b])
end
fallback(transitions=[f,f],[foo,bar])
Now if we want a notification, let's write in the logs before building
the compound source:
def f(a,b)
log("transitioning")
sequence([a,b])
end
fallback(transitions=[f,f],[foo,bar])
In your case, you might have a more complex transition already setup
in your fallback; you can edit it in the same way. Instead of log()
you can use system() to call a script of yours.
Finally, I'll show how to have different notifications without
duplicating the code:
def f(s,a,b)
log(s)
sequence([a,b])
end
fallback(transitions=[f("foo"),f("bar")],[foo,bar])
By partially applying arguments to f(), we specialized it to print
different things.
Hope this helps,
--
David
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