Really cool!! please post the code when you get a chance :).

Code attached.
jukebox.liq is %included before default is defined and I redefined it as "default = auto". The two functions are transitions to replace the ones in the default_switch, nicer fade and skipping the next sequence when going back to the jukebox. There's also an hourly chime defined in there.

The script.php is ran as a cron job every hour. It's a pretty simple query and write to file. I like the idea of doing a dynamic request through LS instead. Keeps it more up to date.
I've been getting the impression that the replay_gain is in the database rather than the file. Another reason I'd like to be able to get the main system to handle the jukebox.

Reply to @FrancescoP:
It should be just a case of replacing the metadata for each file with the metadata in the database. http://savonet.sourceforge.net/doc-svn/metadata.html
It won't work with my way as I'm just producing a playlist of URIs, but your way might work.

The more I investigate however, the more I want to dig into the scheduler and make it handle it, possibly a foolhardy desire but that won't stop me looking. :)

Reply to @aukondk:

I think that Airtime is already doing what you want to do. A quick search with "replay_gain" e "replaygain" in her liquidsoap script revealed some kind of external script call - then I had to interrupt investigation.

But I think we may ask the developer themself how do they do this. :)

probabilmente,
Francesco P.

I've decided to get Liquidsoap's script to add the replay gain metadata to the file as it is played. My server is pretty powerful so it shouldn't cause slowdown.
http://savonet.sourceforge.net/doc-svn/replay_gain.html
I've made my script append "replay_gain:" to the file URIs and added an amplify line to just the music (leaving out the jingles). Can't tell if it's working as the log isn't verbose about it. Sounds alright though.

Reply to @FrancescoP:

script.php
        fwrite ($f, "replay_gain:/srv/airtime/stor/$col_value\n");


jukebox.liq
music = playlist(reload = 100, "/home/www/radio/playlist.txt") #random playlist
music = amplify(1.,override="replay_gain",music)
music = skip_blank(threshold=-50.,length=3., music)
jingles = playlist(reload = 100, "/home/www/radio/jingles.txt")
auto = rotate(weights = [1, 4],[jingles, music])

The
playlist function apparently has it's own prefix function but I
couldn't tell if it was working so I made the php script add the
"replay_gain:" to the front of the URIs so I could see it in the txt file it makes.

With your script you probably just need to concatenate "replay_gain:" to the front of your $output variable.

Hello aukondk

thanks for your script !
Its ok for script.php but i have a problem to start the 24hr jukebox.
I suppose that i must include jukebox.liq in ls_script.liq, but where and how ? please. :)
Can you give me your ls_script, please ?

it would not be easier to ask the script to load an existing playlist. So you could edit that playlist directly in Airtime and call it "default" or "jukebox". So any track that the jukebox playlist contain would be played when nothing is scheduled. Same for the jingles, you could create a playlist "jingles" inside airtime and load it the same way.

first of all thx for your script
i've tested your script but in a different version..

this is my ls_script.liq


%include "jukebox.liq"
music = playlist(reload = 100, "/var/www/owncloud/data/niculin/files/random") #random playlist
music = skip_blank(threshold=-50.,length=3., music)
jingles = playlist(reload = 100, "/var/www/radio/jingles")
auto = rotate(weights = [1, 4],[jingles, music])
default = auto

and this is my jukebox.liq


def from_jukebox(old,new)
add(normalize=false,
[ sequence([ blank(duration=0.1),
fade.initial(duration=5.,new) ]),
fade.final(duration=5.,old) ])
end

def to_jukebox(a,b) =
log("transition called...")
source.skip(b)
add(normalize=false,
[ sequence([ blank(duration=0.01),
fade.initial(duration=!default_dj_fade, b) ]),
fade.final(duration=!default_dj_fade, a) ])
end

I found two problems:
1) when liquidsoap change from Jukebox mode to the Scheduled show, liquidsoap interrupt the song without fade
2) The second problem is that when liquidsoap switch from the scheduled show to the random selection, liquidsoap resumes the song stopped before, creating a bad effect

any solution for these issues?

p.s. is possible to have crossfade between songs?

ok i modified the script with smart_crossfade ;)
oh yes jukebox functions are not called.. how to use your new functions aukondk? :)

FrancescoP said:

aukondk said:

Reply to @nicolaM:
Hi, sorry I didn't check this thread for a while.

The two functions from_jukebox and to_jukebox should fade the jukebox out into the scheduled track and skip to the beginning of the "rotate()" cycle when it goes back to the jukebox (so it should play a jingle then 4 songs).

I've checked my code and mine works with the above code (transitions=[from_jukebox, to_jukebox],)
If it's not working for you still it may be the %include "jukebox.liq" isn't working. Try pasting the two functions into ls_script.liq just before the s = switch code. I only put my code in a separate file to make it easier/quicker to hack.

Reply to @aukondk:

no no the script works, but in a strange way :)
practically .. the script makes the transition from the jukebox to the show  with a little crossfade.. and it's ok, i would prefer a simply fade-out without fade-in but doesn't matter, it's same a great step forward!

the problem is in the transition from the show to the jukebox, the script play only 2 second of the previous interrupted song, and then it start with a new song..

Do you have the same problem?

ls_script
%include "jukebox.liq"
music = playlist(reload = 100, "/var/www/owncloud/data/niculin/files/random") #random playlist
music = skip_blank(threshold=-50.,length=3., music)
jingles = playlist(reload = 100, "/var/www/radio/jingles")
auto = rotate(weights = [1, 4],[jingles, music])
default = auto

jukebox.liq
def from_jukebox(old,new)
  add(normalize=false,
      [ sequence([ blank(duration=0.1),
                   fade.initial(duration=5.,new) ]),
        fade.final(duration=5.,old) ])
end

def to_jukebox(a,b) =
  log("transition called...")
  source.skip(b)
  add(normalize=false,
     [ sequence([ blank(duration=0.01),
                   fade.initial(duration=!default_dj_fade, b) ]),
        fade.final(duration=!default_dj_fade, a) ])
end



anyways good job aukondk! :)

aukondk said:

Reply to @nicolaM:
The problem seems familiar but I seem to remember for me it was only a split second of the old track and then only occasionally. My server might be a bit more powerful than yours and can process the script quicker.
Maybe try moving the source.skip() function to the from_jukebox function so the skipping happens earlier:
eg
def from_jukebox(old,new)

  add(normalize=false,

      [ sequence([ blank(duration=0.1),

                   fade.initial(duration=5.,new) ]),

        fade.final(duration=5.,old) ])

source.skip(old)
end


and remove source.skip(b) from to_jukebox.

I've just tried this out because I noticed it happen on my setup. Didn't work :( Not sure what to try next.

Pretty sure they're re-writing portions of the scheduler. It isn't truly accurate down to the second, so if it isn't done now, it'll need to be done at some point anyway...