Well, I am very missed

I was tried to use "if" to bypass the transition function without 
success, inspired in this message:

http://sourceforge.net/mailarchive/message.php?msg_id=20187957

        if source.id(s) == "tangos"
        then
                transition function...
        end


Of course I was added the ID to the playlist like:

playlist(id="tangos",...)

Any help will be appreciated (yes, more help :-)

Normando



El 20/12/2010 01:56 p.m., Normando Hall escribió:
> Thank you David. I am very missed with ocaml language :-( Can you help
> me where I need to change the source?
>
> Here is the smart-crossfade function. I need to crossfade only the
> playlist named "tangos".
>
> def smart_crossfade (~start_next=5.,~fade_in=3.,~fade_out=3.,
>                        ~default=(fun (a,b) ->  sequence([a, b])),
>                        ~high=-15., ~medium=-32., ~margin=4.,
>                        ~width=2.,~conservative=false,s)
>     fade.out = fade.out(type="sin",duration=fade_out)
>     fade.in  = fade.in(type="sin",duration=fade_in)
>     add = fun (a,b) ->  add(normalize=false,[b, a])
>     log = log(label="smart_crossfade")
>
>     def transition(a,b,ma,mb,sa,sb)
>
>       list.iter(fun(x)->  log(level=4,"Before: #{x}"),ma)
>       list.iter(fun(x)->  log(level=4,"After : #{x}"),mb)
>
>       if
>         # If A and B are not too loud and close, fully cross-fade them.
>         a<= medium and b<= medium and abs(a - b)<= margin
>       then
>         log("Old<= medium, new<= medium and |old-new|<= margin.")
>         log("Old and new source are not too loud and close.")
>         log("Transition: crossed, fade-in, fade-out.")
>         add(fade.out(sa),fade.in(sb))
>
>       elsif
>         # If B is significantly louder than A, only fade-out A.
>         # We don't want to fade almost silent things, ask for>medium.
>         b>= a + margin and a>= medium and b<= high
>       then
>         log("new>= old + margin, old>= medium and new<= high.")
>         log("New source is significantly louder than old one.")
>         log("Transition: crossed, fade-out.")
>         add(fade.out(sa),sb)
>
>       elsif
>         # Opposite as the previous one.
>         a>= b + margin and b>= medium and a<= high
>       then
>         log("old>= new + margin, new>= medium and old<= high")
>         log("Old source is significantly louder than new one.")
>         log("Transition: crossed, fade-in.")
>         add(sa,fade.in(sb))
>
>       elsif
>         # Do not fade if it's already very low.
>         b>= a + margin and a<= medium and b<= high
>       then
>         log("new>= old + margin, old<= medium and new<= high.")
>         log("Do not fade if it's already very low.")
>         log("Transition: crossed, no fade.")
>         add(sa,sb)
>
>       # What to do with a loud end and a quiet beginning ?
>       # A good idea is to use a jingle to separate the two tracks,
>       # but that's another story.
>
>       else
>         # Otherwise, A and B are just too loud to overlap nicely,
>         # or the difference between them is too large and overlapping would
>         # completely mask one of them.
>         log("No transition: using default.")
>         default(sa, sb)
>       end
>     end
>
>     smart_cross(width=width, duration=start_next, conservative=conservative,
>                 transition,s)
> end
>
> Thanks!
>
> Normando
>
> El 19/12/2010 01:06 p.m., David Baelde escribió:
>> Hi,
>>
>> On Thu, Dec 16, 2010 at 9:02 AM, Normando Hall<[email protected]>   wrote:
>>> If I using smart-crossfade only for the playlist then never run the
>>> switches. If I using smart-crossfade after the switches, then all is ok
>>> and runnig.
>> This is normal: crossing merges tracks, so you can't switch (I presume
>> your switch is track sensitive).
>>
>>> But I want only apply smart-crossfade to the playlist.
>> You're in luck because you're already using smart_cross(). The
>> solution is to apply the smart_cross after the switch (so the switch

>> can occur) but tweak the transition function so that it only applies
>> on tracks of the right souce (take the code from smart_crossfade in
>> utils.liq and tweak it to use the "source" metadata field).
>>
>> Good luck,
>
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