some minor speedups using caches and more selective updating

1 files changed, 18 insertions, 7 deletions

diff --git a/lib/python/Components/Sources/EventInfo.py b/lib/python/Components/Sources/EventInfo.py
index 40269993..20e5f104 100644
--- a/lib/python/Components/Sources/EventInfo.py
+++ b/lib/python/Components/Sources/EventInfo.py
@@ -3,6 +3,8 @@ from Tools.Event import Event
 from enigma import iPlayableService
 from Source import Source
 
+from time import time
+
 class EventInfo(PerServiceBase, Source, object):
 	NOW = 0
 	NEXT = 1
@@ -11,16 +13,25 @@ class EventInfo(PerServiceBase, Source, object):
 		Source.__init__(self)
 		PerServiceBase.__init__(self, navcore, 
 			{ 
-				iPlayableService.evStart: self.changed,
-				iPlayableService.evUpdatedEventInfo: self.changed,
-				iPlayableService.evEnd: self.changed
-			})
+				iPlayableService.evStart: self.gotEvent,
+				iPlayableService.evUpdatedEventInfo: self.gotEvent,
+				iPlayableService.evEnd: self.gotEvent
+			}, with_event=True)
 		
 		self.now_or_next = now_or_next
 		
 	def getEvent(self):
-		service = self.navcore.getCurrentService()
-		info = service and service.info()
-		return info and info.getEvent(self.now_or_next)
+		if self.cache is None:
+			service = self.navcore.getCurrentService()
+			info = service and service.info()
+			self.cache = (True, info and info.getEvent(self.now_or_next)) # we always store a tuple for negative caching
+		
+		return self.cache[1]
 
 	event = property(getEvent)
+
+	def gotEvent(self, what):
+		if what in [iPlayableService.evStart, iPlayableService.evEnd]:
+			self.changed((self.CHANGED_CLEAR,))
+		else:
+			self.changed((self.CHANGED_ALL,))