Switch & check for playbar TV input

lib/sonos/endpoint/a_v_transport.rb

@@ -32,6 +32,12 @@ def now_playing
     }
   end
 
+  def is_tv?
+    response = send_transport_message('GetPositionInfo')
+    body = response.body[:get_position_info_response]
+    body[:track_uri] =~ /\Ax-sonos-htastream:/ ? true : false
+  end
+
   def has_music?
     !now_playing.nil?
   end
@@ -54,6 +60,11 @@ def is_playing?
     !['PAUSED_PLAYBACK', 'STOPPED'].include?(state)
   end
 
+  # Returns true if speaker is quiescent. Playbar "playing" an unconnected TV counts as inactive.
+  def inactive?
+    is_playing? == false || (is_tv? == true && get_zone_info[:ht_audio_in] == "0")
+  end
+
   # Pause the currently playing track.
   def pause
     parse_response send_transport_message('Pause')
@@ -88,6 +99,10 @@ def line_in(speaker)
     set_av_transport_uri('x-rincon-stream:' + speaker.uid.sub('uuid:', ''))
   end
 
+  def tv
+    set_av_transport_uri('x-sonos-htastream:%s:spdif' % uid.sub('uuid:', ''))
+  end
+
   # Seeks to a given timestamp in the current track
   # @param [Fixnum] seconds
   def seek(seconds = 0)

lib/sonos/endpoint/device.rb

@@ -16,6 +16,10 @@ def status_light_enabled=(enabled)
     parse_response send_device_message('SetLEDState', enabled ? 'On' : 'Off')
   end
 
+  def get_zone_info
+    send_device_message('GetZoneInfo', '').body[:get_zone_info_response]
+  end
+
   # Create a stereo pair of two speakers.
   # This does not take into account which type of players support bonding.
   # Currently only S1/S3 (play:1/play:3) support this but future players may

lib/sonos/system.rb

@@ -31,6 +31,10 @@ def play_all
       end
     end
 
+    def inactive?
+      speakers.all? &:inactive?
+    end
+
     # Party Mode!  Join all speakers into a single group.
     def party_mode new_master = nil
       return nil unless speakers.length > 1