Hi Romain and everyone,
Thanks for answering so quickly. I am sure the active community and
helpful developers liquidsoap has will be very imporant to spread it. I
hope to contribute with some frontend for plone cms...
I am still getting used to liquid scripts.. I tried the code you
sent,but it is still not what I want. I want to add a single track only
once in the begining of the playlist (which is randomized). The append
function, appends this track to every track.
I also did not get some of the syntax of the code:
a) Why I need a function to create the single mp3 source? why
single(path) is not enough?
b) The function add_track(_) has no return statement, so how can I know
what it returns? (_) means no arguments? Is this ocaml syntax?
c) When I changed the order of arguments in the call to "s =
append(add_track, s)" I got an error.
What is the difference between objects of type source and of type
[(string*string)])->source('a) ? Is the second object metadata?
Anyway, i see that the right way to do what I want is to script in
python, the language I am most familiar with, this will be no problem. I
just have a single question about this:
I saw a post of someone saying he runs the python script before running
liquidsoap and then statically pass the playlist. But I don't wan't to
do that. I would like liquidsoap to call the python scripts..
Is
playlist = system("python ~/lista.py")
the right way to do this? Or must I use dynamic request? Here it did not
work, but I am not sure if I can use python print function, or if I must
create and return a text file with the playlist.
Thanks a lot,
Rafael
Em 17-08-2010 12:33, Romain Beauxis escreveu:
> Le lundi 16 août 2010 14:01:15, rafael a écrit :
>
>> Hi everyone,
>>
> Hi !
>
>
>> A very simple question:
>>
>> Is there a way to join (concatenate) playlists?
>>
>> I have a randomized playlist for a music hour.
>>
>> I already have the middle jingle playing every 4 musics ("You are
>> hearing mpb, the best of brazilian music)
>>
>> mpb = rotate(weights=[4,1], [playlist("/home/radio/audio/mpb"),
>> single("/home/radio/audio/apoio/bloco_mpb.mp3")])
>>
>> I just need to add a single mp3 file at the begining of it. ("Now you
>> will hear...")
>>
> I think you should be able to do this by using the append operator:
>
> 10:20 to...@leonard /tmp/audacity-1.3.12/src/effects% liquidsoap -h append
> *** One entry in scripting values:
> Append an extra track to every track. Set the metadata 'liq_append' to
> 'false'
> to inhibit appending on one track.
> Category: Source / Track Processing
> Type: (?id:string, ?merge:bool, ?insert_missing:bool, source('a),
> (([(string*string)])->source('a)))->source('a)
> Parameters:
> * id : string (default "")
> Force the value of the source ID.
> * merge : bool (default false)
> Merge the track with its appended track.
> * insert_missing : bool (default true)
> Treat track beginnings without metadata as having empty one.
> * (unlabeled) : source('a) (default None)
> * (unlabeled) : ([(string*string)])->source('a) (default None)
> Given the metadata, build the source producing the track to append. This
> source is allowed to fail (produce nothing) if no relevant track is to be
> appended.
>
> You need to provide the operator with a function to create the single source
> you want to play the single. This is a function that takes the metadata and
> returns a source. I can think of the following, for instance, if the file
> does
> not depend on the metadata:
>
> def add_track(_) =
> # Create a non-interactive queued source with the file
> request = request.create("/home/radio/audio/beginmpb.mp3")
> request.queue(interactive=false,queue=[request])
> end
>
> And then:
> s = append(s,add_track)
>
> It should also be possible to define the request.queue source outside of the
> function, but I am not sure about this. Maybe David could tell you more..
>
> Let us know if this is what you want..
>
> Romain
>
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