CC-430: Audio normalization (Replaygain Support)

-Added support on Liquidsoap side

airtime_mvc/application/models/Schedule.php

@@ -447,19 +447,22 @@ class Application_Model_Schedule {
         $con = Propel::getConnection();
 
         $baseQuery = "SELECT st.file_id AS file_id,"
-            ." st.id as id,"
-            ." st.instance_id as instance_id,"
+            ." st.id AS id,"
+            ." st.instance_id AS instance_id,"
             ." st.starts AS start,"
             ." st.ends AS end,"
             ." st.cue_in AS cue_in,"
             ." st.cue_out AS cue_out,"
             ." st.fade_in AS fade_in,"
             ." st.fade_out AS fade_out,"
-            ." si.starts as show_start,"
-            ." si.ends as show_end"
-            ." FROM $CC_CONFIG[scheduleTable] as st"
-            ." LEFT JOIN $CC_CONFIG[showInstances] as si"
-            ." ON st.instance_id = si.id";
+            ." si.starts AS show_start,"
+            ." si.ends AS show_end,"
+            ." f.replay_gain AS replay_gain"
+            ." FROM $CC_CONFIG[scheduleTable] AS st"
+            ." LEFT JOIN $CC_CONFIG[showInstances] AS si"
+            ." ON st.instance_id = si.id"
+            ." LEFT JOIN $CC_CONFIG[filesTable] AS f"
+            ." ON st.file_id = f.id";
 
 
         $predicates = " WHERE st.ends > '$p_startTime'"
@@ -597,7 +600,8 @@ class Application_Model_Schedule {
                 'cue_out' => Application_Common_DateHelper::CalculateLengthInSeconds($item["cue_out"]),
                 'start' => $start,
                 'end' => Application_Model_Schedule::AirtimeTimeToPypoTime($item["end"]),
-                'show_name' => $showName
+                'show_name' => $showName,
+                'replay_gain' => $item["replay_gain"]
             );
         }
 

install_minimal/upgrades/airtime-2.2.0/TODO

@@ -0,0 +1,6 @@
+need to install the following packages:
+
+mp3gain
+vorbisgain
+flac
+vorbis-tools

python_apps/pypo/liquidsoap_scripts/ls_script.liq

@@ -10,6 +10,7 @@ time = ref string_of(gettimeofday())
 
 queue = audio_to_stereo(id="queue_src", request.equeue(id="queue", length=0.5))
 queue = cue_cut(queue)
+queue = amplify(1., override="replay_gain", queue)
 
 pypo_data = ref '0'
 web_stream_enabled = ref false

python_apps/pypo/pypopush.py

@@ -474,9 +474,9 @@ class PypoPush(Thread):
             self.telnet_lock.release()
 
     def create_liquidsoap_annotation(self, media):
-        # we need lia_start_next value in the annotate. That is the value that controlls overlap duration of crossfade.
-        return 'annotate:media_id="%s",liq_start_next="0",liq_fade_in="%s",liq_fade_out="%s",liq_cue_in="%s",liq_cue_out="%s",schedule_table_id="%s":%s' \
-            % (media['id'], float(media['fade_in']) / 1000, float(media['fade_out']) / 1000, float(media['cue_in']), float(media['cue_out']), media['row_id'], media['dst'])
+        # We need liq_start_next value in the annotate. That is the value that controls overlap duration of crossfade.
+        return 'annotate:media_id="%s",liq_start_next="0",liq_fade_in="%s",liq_fade_out="%s",liq_cue_in="%s",liq_cue_out="%s",schedule_table_id="%s",replay_gain="%s dB":%s' \
+            % (media['id'], float(media['fade_in']) / 1000, float(media['fade_out']) / 1000, float(media['cue_in']), float(media['cue_out']), media['row_id'], media['replay_gain'], media['dst'])
 
     def run(self):
         try: self.main()