[Savonet-users] smooth_add and metadata (#2)

[T. B. <to...@tb...>]

Hello all!

I've started this thread in february, but since then i had not much time
to experiment; even worse the old mails were already deleted.. :(
I'm still trying to do a smooth_add while showing the metadata of the
"special" source.

The Problem is, i'm not getting a smooth transition, it just cuts hard
like a fallback at the start and the end of the special source.
But i'm ok with the metadata this time.

What i have now is this:
(Basically "smooth_add" with the "special" and the "normal" Parts 
switched in utils.liq as David suggested)

def smooth_add_meta(~delay=0.5,~p=0.2,~normal,~special)
  d = delay
  fade.final = fade.final(duration=d*2.)
  fade.initial = fade.initial(duration=d*2.)
  q = 1. - p
  c = amplify
  fallback(track_sensitive=false,
           [special,normal],
           transitions=[
            
             fun(special,normal)->
               add(normalize=false,
                   [c(p,normal),
                    c(q,fade.initial(type="sin",normal))]),
                   
                   
                    fun(normal,special)->
               add(normalize=false,
                   [c(p,normal),
                    c(q,fade.final(type="sin",normal)),
                    sequence([blank(duration=d),c(q,special)])])
           ])
end

As i understand this code, we have a fallback with a transition.
The first function fun(normal,special) does this:
The normal stream gets added with "negative" amplification of  ~q (eq.
"1. -p") and with a fade.final  (and so fades out).
The seqence adds blank for  ~delay and starts the special stream then.

The function fun(special,normal) does this:
 It adds normal again to the output (amplified "negatively" by p), but
this time with fade.inital(so starts to fade in)

The whole process starts as soon as ~special is available at the fallback.

>From my point of view, the above code should work.
Can anybody point me to the right direction or am i misunderstanding
something here?

Thanks for helping out!

-- Tom

Liquidsoap rocks!