I've implemented a custom crossfade based from one of the examples. The
crossfade works great, but metadata updates to icecast always stop after the
second track is played. If I restart liquidsoap metadata updates will
resume, but will stop after the second track is played. Metadata updates
process as usual when I remove the crossfade code. I'm using a trunk version
of liquidsoap that's about 2 or three weeks old. Any theories? Here is a
snippet of the code:
def my_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
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", buffer = 5.0, "http://
#{live_server}:#{live_port}#{live_mount}")
live_broadcast = nrj(live_broadcast)
local_playlist = playlist(id = "local_playlist", mode = "normal",
"content.m3u")
local_playlist =
request.dynamic(id="local_playlist",{request.create(get_process_output("#{track_script}
#{channel_id}"))})
local_playlist = rewrite_metadata(
[
("title", '$(if $(player_title),"$(player_title)","$(title)")'),
],
local_playlist)
local_broadcast = my_crossfade(conservative=true, local_playlist)
radio = fallback(
id="live_fallback",
track_sensitive=false,
transitions = [fade_to_live_source, fade_to_local_source],
[
strip_blank(id="live_strip_blank",length=30., live_broadcast),
local_broadcast]
)
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