Added new Candle effect - like those fake flickering led candles (#317)

* Added new Candle effect - like those fake flickering led candles

* Candle work...
code cleanups
parameter changes
schema file
english labels

* renamed a title

* candle effect german localisation

* fix typo in police.py

effects/candle.py

@@ -0,0 +1,81 @@
+
+# Candleflicker effect by penfold42
+# Algorithm courtesy of 
+# https://cpldcpu.com/2013/12/08/hacking-a-candleflicker-led/
+
+# candles can be :
+# a single led number, a list of candle numbers
+# "all" to flicker all the leds randomly
+# "all-together" to flicker all the leds in unison
+
+import hyperion
+import time
+import colorsys
+import random
+
+# Get parameters
+color = hyperion.args.get('color', (255,138,0))
+colorShift = hyperion.args.get('colorShift', 0.01)
+brightness = float(hyperion.args.get('brightness', 0.5))
+
+sleepTime = float(hyperion.args.get('sleepTime', 0.14))
+
+candles = hyperion.args.get('candles', "all")
+ledlist = hyperion.args.get('ledlist', "1")
+
+candlelist = ()
+if (candles == "list") and (type(ledlist) is str):
+	for s in ledlist.split(','):
+		i = int(s)
+		if (i<hyperion.ledCount):
+			candlelist += (i,)
+elif (candles == "list") and (type(ledlist) is list):
+        for s in (ledlist):
+		i = int(s)
+		if (i<hyperion.ledCount):
+			candlelist += (i,)
+else:
+	candlelist = range(hyperion.ledCount)
+
+
+# Convert rgb color to hsv
+hsv = colorsys.rgb_to_hsv(color[0]/255.0, color[1]/255.0, color [2]/255.0)
+
+
+def CandleRgb():
+	hue = random.uniform(hsv[0]-colorShift, hsv[0]+colorShift) % 1.0
+
+	RAND=random.randint(0,15)
+	while ((RAND & 0x0c)==0):
+		RAND=random.randint(0,15)
+	val = ( min(RAND, 15)/15.0001 ) * brightness
+
+	frgb = colorsys.hsv_to_rgb(hue, hsv[1], val);
+
+	return (int(255*frgb[0]), int(255*frgb[1]), int(255*frgb[2]))
+
+
+ledData = bytearray(hyperion.ledCount * (0,0,0) )
+while not hyperion.abort():
+	if (candles == "all-together"):
+		rgb = CandleRgb()
+		for lednum in candlelist:
+			ledData[3*lednum+0] = rgb[0] 
+			ledData[3*lednum+1] = rgb[1] 
+			ledData[3*lednum+2] = rgb[2] 
+	elif (candles == "all"):
+		for lednum in candlelist:
+			rgb = CandleRgb()
+			ledData[3*lednum+0] = rgb[0] 
+			ledData[3*lednum+1] = rgb[1] 
+			ledData[3*lednum+2] = rgb[2] 
+	else:
+		for lednum in candlelist:
+			rgb = CandleRgb()
+			ledData[3*lednum+0] = rgb[0] 
+			ledData[3*lednum+1] = rgb[1] 
+			ledData[3*lednum+2] = rgb[2] 
+
+	hyperion.setColor (ledData)
+	time.sleep(sleepTime)
+