CC-1469:

Crossfading support (non-equal power)

-initial commit

python_apps/pypo/telnetliquidsoap.py

@@ -0,0 +1,74 @@
+import telnetlib
+
+def create_liquidsoap_annotation(media):
+    # 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'])
+
+class TelnetLiquidsoap:
+
+    def __init__(self, telnet_lock, logger, ls_host, ls_port):
+        self.telnet_lock = telnet_lock
+        self.ls_host = ls_host
+        self.ls_port = ls_port
+        self.logger = logger
+
+    def __connect(self):
+        return telnetlib.Telnet(self.ls_host, self.ls_port)
+
+    def __is_empty(self, tn, queue_id):
+        return True
+
+
+    def queue_push(self, queue_id, media_item):
+        try:
+            self.telnet_lock.acquire()
+            tn = self.__connect()
+
+            if not self.__is_empty(tn, queue_id):
+                raise QueueNotEmptyException()
+
+            annotation = create_liquidsoap_annotation(media_item)
+            msg = '%s.push %s\n' % (queue_id, annotation.encode('utf-8'))
+            self.logger.debug(msg)
+            tn.write(msg)
+
+            show_name = media_item['show_name']
+            msg = 'vars.show_name %s\n' % show_name.encode('utf-8')
+            tn.write(msg)
+            self.logger.debug(msg)
+
+            tn.write("exit\n")
+            self.logger.debug(tn.read_all())
+        except Exception:
+            raise
+        finally:
+            self.telnet_lock.release()
+
+class DummyTelnetLiquidsoap:
+
+    def __init__(self, telnet_lock, logger):
+        self.telnet_lock = telnet_lock
+        self.liquidsoap_mock_queues = {}
+        self.logger = logger
+
+        for i in range(4):
+            self.liquidsoap_mock_queues["s"+str(i)] = []
+
+    def queue_push(self, queue_id, media_item):
+        try:
+            self.telnet_lock.acquire()
+
+            self.logger.info("Pushing %s to queue %s" % (media_item, queue_id))
+            from datetime import datetime
+            print "Time now: %s" % datetime.utcnow()
+
+            annotation = create_liquidsoap_annotation(media_item)
+            self.liquidsoap_mock_queues[queue_id].append(annotation)
+        except Exception:
+            raise
+        finally:
+            self.telnet_lock.release()
+
+class QueueNotEmptyException(Exception):
+    pass