#382: function to get a source by it's id
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Reporter: mccurly | Owner: admin
Type: Feature | Status: new
Priority: 1 | Milestone:
Component: Liquidsoap | Version:
Keywords: | Mac: 1
Linux: 1 | Netbsd: 1
Other: 1 | Freebsd: 1
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Comment(by mccurly):
lo, mrpingouin!
thanks for asking. let's continue the discussion. in my case the major
need for that function was raised by the otput.file.x function. currently
it is not possible do change filenames of the output during runtime. let
me explain a little example:
<snip>
def start_recording =
output.file.x(
id = "whatever",
...
"/path/" ^ some_generated_filename ^ ".ext",
GET_SOURCE_BY_ID("liveinput") # the source live, will not work
here
end
live = input.harbor(id="liveinput", on_connect=start_recording,
on_disconnect=stop_recording, "/mount" )
<snap>
a possible way to let the filename of the output function variate, is to
create it at runtime, BUT you cannot take a source that is created later
in the config file. in my example the source of the output function should
be "live". this can't work out. as you have to define a
on_connect/on_disconnect function of a harbor source before itself, you
can't use the source itself. i think that is a nice example to explain,
where's a need for the get_source_by_id() function. granted, but this is
taken from real life. on the other hand i could imagine, this function
would solve lots of chicken/egg problems, where you are bound on the
notation of sources/functions.
i must admit, that it's some kind of tricky, because it is not guaranteed
that a source with that id exists. i can understand that, yes, *solution*
but i could imagine that, if it was not possible to catch some source, a
silent source, with the searched id, is created.*/solution*
wow, i hope you understand my bad english.
ps: i didn't try it, yet.
--
Ticket URL: <http://savonet.rastageeks.org/ticket/382#comment:2>
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