Run in a jingle way

[PilatP]

Hi.

I have azuracast + liquidsoap

Rolling Release (2025-02-27 10:21)
Liquidsoap 2.3.1

What am I doing wrong?
I have 2 playlists

playlist_music
playlist_calls

I want to play playlist_music all the time but at a certain time run one of the playlist_calls with interrupting the current song.

radio =
  switch(
    track_sensitive=false,
    [(predicate.once({00m-15m}), playlist_calls), ({true}, playlist_music)]
  )

According to the log I can see that something happens at 00m - the song from playlist_calls is chosen and queued.
But playlist_calls does not play either immediately or after the end of the current song.

[vitoyucepi]

Hi @PilatP,
The switch function evaluates the states of all conditions on every frame when track_sensitive=false and the predicate.once becomes true only once in the interval 0m-15m.
Could you explain in detail the behavior you're trying to achieve?

[vitoyucepi]

Probably the playlist_calls.is_ready() is false when predicate.once({0m-15m}) is true, so it will fail in switch, but the next time the predicate.once becomes true, it will work just fine.

def p()
  let {sec} = time.utc()
  # Get the state of the playlist
  # ignore(playlist_calls.is_ready())
  sec < 10
end

a = switch([(predicate.once(p), playlist_calls)])

[PilatP]

If it's azuracast then maybe you should use
Box should be Number 3! Before # Allow Telnet to skip the current track. line.

It is there.

[PilatP]

Probably the playlist_calls.is_ready() is false when predicate.once({0m-15m}) is true, so it will fail in switch, but the next time the predicate.once becomes true, it will work just fine.

def p()
  let {sec} = time.utc()
  # Get the state of the playlist
  # ignore(playlist_calls.is_ready())
  sec < 10
end

a = switch([(predicate.once(p), playlist_calls)])

It seems you're right.
I just print playlist_calls.is_ready() out, the first value is false and the rest values are true.
Is there any way to prepare the playlist in ahead to get it ready at the very first time?

[vitoyucepi]

@PilatP, if it's possible to set prefetch=0 for playlist_calls, then try the following snippet

thread.when({0m-15m}, {playlist_calls.fetch()}, fast=false)
radio = fallback([playlist_calls, playlist_music], track_sensitive=false)

1. I defined playlist_calls as playlist('path/to/playlist', prefetch=0), so it would not fetch new tracks automatically.
2. The first argument of thread.when behaves similarly to predicate.activates.
3. The second argument of thread.when tries to fetch a new track from the playlist.

[PilatP]

@PilatP, if it's possible to set prefetch=0 for playlist_calls, then try the following snippet

thread.when({0m-15m}, {playlist_calls.fetch()}, fast=false)
radio = fallback([playlist_calls, playlist_music], track_sensitive=false)

1. I defined playlist_calls as playlist('path/to/playlist', prefetch=0), so it would not fetch new tracks automatically.
2. The first argument of thread.when behaves similarly to predicate.activates.
3. The second argument of thread.when tries to fetch a new track from the playlist.

Works just fine.
Thanks a lot.