Le 05/11/2011 23:37, David Baelde a écrit : > Hi Martin, > > I cannot propose any working solution,
Hi David, I thought so and I understand !! > but it should be possible to do > it as follows: you setup an insert_metadata() operator, and use > add_timeout() to periodically get the metadata from the URL, using > http.get(), and insert that metadata (after having parsed it) using > the function given by insert_metadata. > > Here's a standalone minimal example doing this. Unfortunately I cannot > test at all at the moment. > > url = "http://localhost/metadata"; > source = blank() > insert_source = insert_metadata(source) > insert = fst(insert_source) > source = snd(insert_source) > delay = 5. > def update_meta() = > x_data = http.get(url) > insert([("title",snd(x_data))]) > end > add_timeout(0., { update_meta() ; delay }) > output.dummy(on_metadata(fun(m)->print(m),source)) Yes, I already have an idea on how to implement each part but the question remain on how to assemble it with dyn_sources and interface it with my app. If you'd have like 5min of your time to devote, it would be for that question: instead of storing only sources (in dyn_sources[]), how to store a reference to a string that hold "url", for each stream link. Then I'd only had to read/write what resides at this reference. note: Last time we talk about that you talked about this, you talked about "arbitrary tuples" , ie you can't do (x,y,z) but only (x,(y,z)) Inspired by the above, I thought about this: dyn_sources := list.append( [((uri,s0), stream_metaurl),((uri,output), stream_metaurl)], !dyn_sources ) But if I do this, then I have an error like: At line 143, char 44-56: this value has type [((string*active_source(audio=2,video=0,midi=0))*_)] (infered at line 7, char 19-20) but it should be a subtype of [(?A*_)] where ?A is an orderable type The code at line 143 is like follow: result = list.fold(parse_list, ([], []), !dyn_sources) Maybe I'm close to something, but maybe i'm far ! Thanks again for your time. Martin ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Savonet-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/savonet-users
