Hi,
The function called by on_track is being passed the metadata as its
argument. In your script you called it t. Here is an alternative
function (where I prefer to call it m for metadata) where I use the
metadata. I don't call system() but print() for test purposes:
def f(m)
print("echo #{m[\"title\"]} >> .txt")
# print('echo #{m["title"]} >> .txt) is equivalent
end
While I'm at it, here's how I tested that function:
./src/liquidsoap 'f = fun(m) -> print("echo #{m[\"title\"]} >> .txt")
clock(sync=false,output.dummy(fallible=true,on_track(f,playlist("~/media/audio"))))'
Instead of def I used the more compact form for defining f. Then I use
a sync=false clock to stream as fast as possible (in order to avoid
waiting for metadata) and I use a dummy output (some output is needed
to pull the stream; nothing happens without an active source). Finally
I read files from my ~/media/audio directory, adapt this.
Hope this helps,
David
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