Added source selection for Denon AVR Media Player (#4304)

* Added source selection for Denon AVR Media Player

* Update denon.py

* Update denon.py

* Update denon.py

* Update denon.py

* Update denon.py

slight format update (space issue and new line)

* Further update regarding formatting

* Updated the source name with lowercase

* Update denon.py

homeassistant/components/media_player/denon.py

@@ -10,8 +10,9 @@ import telnetlib
 import voluptuous as vol
 
 from homeassistant.components.media_player import (
-    PLATFORM_SCHEMA, SUPPORT_NEXT_TRACK, SUPPORT_PAUSE, SUPPORT_PREVIOUS_TRACK,
-    SUPPORT_TURN_OFF, SUPPORT_TURN_ON, SUPPORT_VOLUME_MUTE, SUPPORT_VOLUME_SET,
+    PLATFORM_SCHEMA, SUPPORT_NEXT_TRACK, SUPPORT_SELECT_SOURCE,
+    SUPPORT_PAUSE, SUPPORT_PREVIOUS_TRACK, SUPPORT_TURN_OFF,
+    SUPPORT_TURN_ON, SUPPORT_VOLUME_MUTE, SUPPORT_VOLUME_SET,
     MediaPlayerDevice)
 from homeassistant.const import (
     CONF_HOST, CONF_NAME, STATE_OFF, STATE_ON, STATE_UNKNOWN)
@@ -21,8 +22,9 @@ _LOGGER = logging.getLogger(__name__)
 
 DEFAULT_NAME = 'Music station'
 
-SUPPORT_DENON = SUPPORT_PAUSE | SUPPORT_VOLUME_SET | SUPPORT_VOLUME_MUTE | \
-    SUPPORT_PREVIOUS_TRACK | SUPPORT_NEXT_TRACK | \
+SUPPORT_DENON = SUPPORT_PAUSE | SUPPORT_VOLUME_SET | \
+    SUPPORT_VOLUME_MUTE | SUPPORT_PREVIOUS_TRACK | \
+    SUPPORT_SELECT_SOURCE | SUPPORT_NEXT_TRACK | \
     SUPPORT_TURN_ON | SUPPORT_TURN_OFF
 
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
@@ -51,6 +53,8 @@ class DenonDevice(MediaPlayerDevice):
         self._host = host
         self._pwstate = 'PWSTANDBY'
         self._volume = 0
+        self._source_list = {'TV': 'SITV', 'Tuner': 'SITUNER',
+                             'Internet Radio': 'SIIRP', 'Favorites': 'SIFVP'}
         self._muted = False
         self._mediasource = ''
 
@@ -111,6 +115,11 @@ class DenonDevice(MediaPlayerDevice):
         """Boolean if volume is currently muted."""
         return self._muted
 
+    @property
+    def source_list(self):
+        """List of available input sources."""
+        return list(self._source_list.keys())
+
     @property
     def media_title(self):
         """Current media source."""
@@ -161,3 +170,7 @@ class DenonDevice(MediaPlayerDevice):
     def turn_on(self):
         """Turn the media player on."""
         self.telnet_command('PWON')
+
+    def select_source(self, source):
+        """Select input source."""
+        self.telnet_command(self._source_list.get(source))