Pypo fixes and improvements

General:
 * Moved pypo author info into one file
 * Added two database columns in schedule table: "schedule_group_played"
   and "media_item_played".

API clients:
 * Created get_liquidsoap_data() function which allows you
   to give arbitrary data to liquidsoap.
 * Added documentation
 * Renamed functions to make it more obvious what is happening

pypo_cli:
 * Got rid of more constants that were not needed
 * Created function set_export_source() to reduce code repetition
 * Separated the downloading of the schedule from tracking what has
   been played.  The tracking info is now kept in a separate file.
   This fixes the major bug that the playlist keeps restarting for
   the first minute of playback.
 * converted more print statements to debug statements

pypoTester:
 * Now uses samples from the audio_samples directory, and schedules two
   audio clips back-to-back.

3rd_party/pypo/scripts/cue_file.py

@@ -1,8 +1,6 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
-# author Jonas Ohrstrom <jonas@digris.ch>
-
 
 """
 cue script that gets called by liquidsoap if a file in the playlist

3rd_party/pypo/scripts/include_dynamic_vars.liq

@@ -6,7 +6,11 @@ playlist_id = ref '0'
 user_id = ref '0'
 transmission_id = ref '0'
 playlist_type = ref '0'
+pypo_data = ref '0'
 
+def set_pypo_data(s)
+  pypo_data := s
+end
 
 def set_user_id(s)
   user_id := s
@@ -29,4 +33,5 @@ end
 server.register(namespace="vars", "user_id", fun (s) ->  begin set_user_id(s) "Done!" end)
 server.register(namespace="vars", "playlist_id", fun (s) ->  begin set_playlist_id(s) "Done!" end)
 server.register(namespace="vars", "transmission_id", fun (s) ->  begin set_transmission_id(s) "Done!" end)
-server.register(namespace="vars", "playlist_type", fun (s) ->  begin set_playlist_type(s) "Done!" end)
+server.register(namespace="vars", "playlist_type", fun (s) ->  begin set_playlist_type(s) "Done!" end)
+server.register(namespace="vars", "pypo_data", fun (s) ->  begin set_pypo_data(s) "Done!" end)

3rd_party/pypo/scripts/include_notify.liq

@@ -4,10 +4,10 @@
 
 def notify(m)
 
-  print('user_id: #{!user_id}')
-  print('playlist_id: #{!playlist_id}')
-  print('transmission_id: #{!transmission_id}')  
-  print('playlist_type: #{!playlist_type}')  
+#  print('user_id: #{!user_id}')
+#  print('playlist_id: #{!playlist_id}')
+#  print('transmission_id: #{!transmission_id}')  
+#  print('playlist_type: #{!playlist_type}')  
 
   if !playlist_type=='5' then 
     print('livesession')
@@ -20,8 +20,9 @@ def notify(m)
   end 
     
   if !playlist_type=='0' or !playlist_type=='1' or !playlist_type=='2' or !playlist_type=='3' or !playlist_type=='4' then
-  	print('playlist')
-  	system("./notify.sh --playing --playlist-type=#{!playlist_type} --media-id=#{m['media_id']} --export-source=#{m['export_source']}")
+  	print('include_notify.liq: notify on playlist')
+  	#system("./notify.sh --playing --playlist-type=#{!playlist_type} --media-id=#{m['media_id']} --export-source=#{m['export_source']}")
+  	system("./notify.sh --data='#{!pypo_data}' --media-id=#{m['media_id']}")
   end
   
 end

3rd_party/pypo/scripts/ls_config.liq.dist

@@ -2,9 +2,6 @@
 # liquidsoap config file                  #
 ###########################################
 
-# author Jonas Ohrstrom <jonas@digris.ch>
-
-
 # this file is specific to the obp 
 # installation. eg it assumes that there are 
 # two instances of LS running

3rd_party/pypo/scripts/ls_cue.liq

@@ -1,4 +1,4 @@
-# author Jonas Ohrstrom <jonas@digris.ch>
+
 # Register the cut protocol
 def cue_protocol(arg,delay)
 	# The extraction program