Implimented Ignore CEC for Chromecasts

1) Added the ability to ignore CEC data from Chromecasts using pending
updates to PyChromecast library.
2) Modified cast device to not allow the same device to be imported
twice. This can happen when cast is setup as a media_player in the
config when the discovery component is active.

homeassistant/components/media_player/cast.py

@@ -25,10 +25,12 @@ from homeassistant.components.media_player import (
     SUPPORT_PREVIOUS_TRACK, SUPPORT_NEXT_TRACK,
     MEDIA_TYPE_MUSIC, MEDIA_TYPE_TVSHOW, MEDIA_TYPE_VIDEO)
 
+CONF_IGNORE_CEC = 'ignore_cec'
 CAST_SPLASH = 'https://home-assistant.io/images/cast/splash.png'
 SUPPORT_CAST = SUPPORT_PAUSE | SUPPORT_VOLUME_SET | SUPPORT_VOLUME_MUTE | \
     SUPPORT_TURN_ON | SUPPORT_TURN_OFF | SUPPORT_PREVIOUS_TRACK | \
     SUPPORT_NEXT_TRACK | SUPPORT_YOUTUBE
+KNOWN_HOSTS = []
 
 
 # pylint: disable=unused-argument
@@ -43,12 +45,22 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
 
         return False
 
-    if discovery_info:
+    # import CEC IGNORE attributes
+    ignore_cec = config.get(CONF_IGNORE_CEC, [])
+    if isinstance(ignore_cec, list):
+        pychromecast.IGNORE_CEC += ignore_cec
+    else:
+        logger.error('Chromecast conig, %s must be a list.', CONF_IGNORE_CEC)
+
+    hosts = []
+
+    if discovery_info and discovery_info[0] not in KNOWN_HOSTS:
         hosts = [discovery_info[0]]
 
     else:
         hosts = (host_port[0] for host_port
-                 in pychromecast.discover_chromecasts())
+                 in pychromecast.discover_chromecasts()
+                 if host_port[0] not in KNOWN_HOSTS)
 
     casts = []
 
@@ -57,6 +69,8 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
             casts.append(CastDevice(host))
         except pychromecast.ChromecastConnectionError:
             pass
+        else:
+            KNOWN_HOSTS.append(host)
 
     add_devices(casts)
 

requirements.txt

@@ -18,7 +18,7 @@ phue>=0.8
 ledcontroller>=1.0.7
 
 # Chromecast bindings (media_player.cast)
-pychromecast>=0.6.6
+pychromecast>=0.6.7
 
 # Keyboard (keyboard)
 pyuserinput>=0.1.9