With your help and some examples I've wired up a custom crossfade and a
server skip command. Everything works mostly as expected. It sounds pretty
nice too!
The only thing I can't seem to figure out is why the custom transitions are
bypassed when the server skip command is executed. I've been at it for a few
hours so I'm probably overlooking the obvious. I think it has to do with
precedence and mksafe because a whole different source shows up in the logs.
Src_random_id_number and it's using "forgetful transition" rather than
custom_crossfade. Custom_crossfade does get executed, but only when tracks
are left to playout naturally.
Where is the right place to use custom_croassfade so it's always executed on
every track change?
# Custom crossfade
def custom_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 ma["crossfade"] == "yes" and mb["crossfade"] == "yes" then
# For the example here, let's put a crossfade:
add(fade.initial(type="sin", sb),fade.final(type="sin", sa))
else
log("No transition defined: using default.")
default(sa, sb)
end
end
smart_cross(width=width, duration=start_next,
conservative=conservative,transition,s)
end
live_broadcast = input.http(id="live_broadcast_url", "
http://localhost:8000/live";)
live_broadcast = nrj(live_broadcast)
local_playlist = mksafe(playlist(id = "local_playlist", mode = "normal",
"content.m3u"))
local_broadcast = custom_crossfade(local_playlist)
def skip(_)
skipped := true
source.skip(local_broadcast)
"OK"
end
server.register("local_broadcast.skip",skip)
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