I thought this would be simple.
I have a web page that returns the filename of an MP3 file. Each time
LiquidSoap needs to play a song, I want it to ask the web page for the
filename.
I am using V1.0.1
The script works. EXCEPT, it plays each song TWICE. It asks the server
for a name, plays that file, then plays it again, and then asks the server
for another file.
I know it isn't asking the server again, because I log each time the name
is requested.
I also know that the 'on_track' function gets executed twice, since the
server sees the notice that the song has started.
Any suggestions?
Here is my script:
#!/usr/bin/liquidsoap
# This is the basic LiquidSoap startup script.
# 1) It starts a blank source to a dummy output so that liquidsoap stays
running
# and doesn't use a lot of CPU looking for stuff to play
# 2) It creates two server commands:
# audiobox.start - this will create the getNextSongFilename playlist and
the output.alsa
# audiobox.stop - this shuts down the playlist and the output
# The code is based on the dynamic playlist sample from the documentation
# Put the log file in some directory where you have permission to write.
#set("log.file.path","./liquidtesting.log")
# Turn off file logging during initial testing
set("log.file",false)
# Print log messages to the console,
set("log.stdout", true)
# Use the telnet server for requests while testing
set("server.telnet", true)
# Need to use external address to listen on, so we can talk from external
set("server.telnet.bind_addr","192.168.0.140")
# This will give liquidsoap something to do while we wait for the telnet
commands
output.dummy(blank())
# First, we create a list referencing the the playlist and the output:
sourceAndoutput = ref []
# We want to capture the filename when we start playing a song.
# This way, we can find the index of the current song in case we restart
node.
currentFile=ref interactive.string("fileName","")
# So we can change the volume
v = interactive.float("volume", 1.)
def track_filename(m) =
# Grab the current filename when the track changes
ignore(http.get("http://localhost:3000/songStarted";))
currentFile := interactive.string("fileName",m["filename"])
end
# Create a function to create the playlist source and output it.
def create_playlist(ignore) =
# The playlist source
s = playlist(id="thelist",mode="normal", reload=1, reload_mode="rounds","
http://localhost:3000/getNextSongFileName";)
s = on_track(id="thelist",track_filename,s)
s = amplify(v, s)
#The output device might have to change depending on your configuration
output = output.alsa(id='localAudio', device="hw: Set",fallible=true,s)
# Save the playlist and the output to the array
sourceAndoutput :=
list.append( [s,output],
!sourceAndoutput )
"Created!"
end
# And a function to destroy the playlist and output we created
def destroy_playlist(ignore) =
list.iter(source.shutdown, !sourceAndoutput)
# The list is now empty
sourceAndoutput := []
# And return
"Gone!"
end
# Now we register the telnet commands:
server.register(namespace="audiobox",
description="Start asking for songs to play.",
usage="start ",
"start",
create_playlist)
server.register(namespace="audiobox",
description="Stop asking for songs to play.",
usage="stop ",
"stop",
destroy_playlist)
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