Nadtcp component (#7955)

* initial commit

* class name and requirements_all.txt

* removed mentions of D7050

* changed default name

* catch oserror in update, travis errors.

* use nad_receiver pip version

* update coveragerc

.coveragerc

@@ -315,6 +315,7 @@ omit =
     homeassistant/components/media_player/mpchc.py
     homeassistant/components/media_player/mpd.py
     homeassistant/components/media_player/nad.py
+    homeassistant/components/media_player/nadtcp.py
     homeassistant/components/media_player/onkyo.py
     homeassistant/components/media_player/openhome.py
     homeassistant/components/media_player/panasonic_viera.py

homeassistant/components/media_player/nadtcp.py

@@ -0,0 +1,181 @@
+"""
+Support for NAD digital amplifiers which can be remote controlled via tcp/ip.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/media_player.nadtcp/
+"""
+import logging
+import voluptuous as vol
+from homeassistant.components.media_player import (
+    SUPPORT_VOLUME_SET,
+    SUPPORT_VOLUME_MUTE, SUPPORT_TURN_ON, SUPPORT_TURN_OFF,
+    SUPPORT_VOLUME_STEP, SUPPORT_SELECT_SOURCE, MediaPlayerDevice,
+    PLATFORM_SCHEMA)
+from homeassistant.const import (
+    CONF_NAME, STATE_OFF, STATE_ON)
+import homeassistant.helpers.config_validation as cv
+
+REQUIREMENTS = ['nad_receiver==0.0.6']
+
+_LOGGER = logging.getLogger(__name__)
+
+DEFAULT_NAME = 'NAD amplifier'
+DEFAULT_MIN_VOLUME = -60
+DEFAULT_MAX_VOLUME = -10
+DEFAULT_VOLUME_STEP = 4
+
+SUPPORT_NAD = SUPPORT_VOLUME_SET | SUPPORT_VOLUME_MUTE | SUPPORT_TURN_ON | \
+              SUPPORT_TURN_OFF | SUPPORT_VOLUME_STEP | SUPPORT_SELECT_SOURCE
+
+CONF_MIN_VOLUME = 'min_volume'
+CONF_MAX_VOLUME = 'max_volume'
+CONF_VOLUME_STEP = 'volume_step'
+CONF_HOST = 'host'
+
+PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
+    vol.Required(CONF_HOST): cv.string,
+    vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
+    vol.Optional(CONF_MIN_VOLUME, default=DEFAULT_MIN_VOLUME): int,
+    vol.Optional(CONF_MAX_VOLUME, default=DEFAULT_MAX_VOLUME): int,
+    vol.Optional(CONF_VOLUME_STEP, default=DEFAULT_VOLUME_STEP): int,
+})
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """Setup the NAD platform."""
+    from nad_receiver import NADReceiverTCP
+    add_devices([NADtcp(
+        NADReceiverTCP(config.get(CONF_HOST)),
+        config.get(CONF_NAME),
+        config.get(CONF_MIN_VOLUME),
+        config.get(CONF_MAX_VOLUME),
+        config.get(CONF_VOLUME_STEP),
+    )])
+
+
+class NADtcp(MediaPlayerDevice):
+    """Representation of a NAD Digital amplifier."""
+
+    def __init__(self, nad_device, name, min_volume, max_volume, volume_step):
+        """Initialize the amplifier."""
+        self._name = name
+        self.nad_device = nad_device
+        self._min_vol = (min_volume + 90) * 2  # from dB to nad vol (0-200)
+        self._max_vol = (max_volume + 90) * 2  # from dB to nad vol (0-200)
+        self._volume_step = volume_step
+        self._state = None
+        self._mute = None
+        self._nad_volume = None
+        self._volume = None
+        self._source = None
+        self._source_list = self.nad_device.available_sources()
+
+        self.update()
+
+    @property
+    def name(self):
+        """Return the name of the device."""
+        return self._name
+
+    @property
+    def state(self):
+        """Return the state of the device."""
+        return self._state
+
+    def update(self):
+        """Get the latest details from the device."""
+        try:
+            nad_status = self.nad_device.status()
+        except OSError:
+            return
+        if nad_status is None:
+            return
+
+        # Update on/off state
+        if nad_status['power']:
+            self._state = STATE_ON
+        else:
+            self._state = STATE_OFF
+
+        # Update current volume
+        self._volume = self.nad_vol_to_internal_vol(nad_status['volume'])
+        self._nad_volume = nad_status['volume']
+
+        # Update muted state
+        self._mute = nad_status['muted']
+
+        # Update current source
+        self._source = nad_status['source']
+
+    def nad_vol_to_internal_vol(self, nad_volume):
+        """Convert nad volume range (0-200) to internal volume range.
+
+        Takes into account configured min and max volume.
+        """
+        if nad_volume < self._min_vol:
+            volume_internal = 0.0
+        if nad_volume > self._max_vol:
+            volume_internal = 1.0
+        else:
+            volume_internal = (nad_volume - self._min_vol) / \
+                              (self._max_vol - self._min_vol)
+        return volume_internal
+
+    @property
+    def supported_features(self):
+        """Flag media player features that are supported."""
+        return SUPPORT_NAD
+
+    def turn_off(self):
+        """Turn the media player off."""
+        self.nad_device.power_off()
+
+    def turn_on(self):
+        """Turn the media player on."""
+        self.nad_device.power_on()
+
+    def volume_up(self):
+        """Step volume up in the configured increments."""
+        self.nad_device.set_volume(self._nad_volume + 2 * self._volume_step)
+
+    def volume_down(self):
+        """Step volume down in the configured increments."""
+        self.nad_device.set_volume(self._nad_volume - 2 * self._volume_step)
+
+    def set_volume_level(self, volume):
+        """Set volume level, range 0..1."""
+        nad_volume_to_set = \
+            int(round(volume * (self._max_vol - self._min_vol) +
+                      self._min_vol))
+        self.nad_device.set_volume(nad_volume_to_set)
+
+    def mute_volume(self, mute):
+        """Mute (true) or unmute (false) media player."""
+        if mute:
+            self.nad_device.mute()
+        else:
+            self.nad_device.unmute()
+
+    def select_source(self, source):
+        """Select input source."""
+        self.nad_device.select_source(source)
+
+    @property
+    def source(self):
+        """Name of the current input source."""
+        return self._source
+
+    @property
+    def source_list(self):
+        """List of available input sources."""
+        return self.nad_device.available_sources()
+
+    @property
+    def volume_level(self):
+        """Volume level of the media player (0..1)."""
+        return self._volume
+
+    @property
+    def is_volume_muted(self):
+        """Boolean if volume is currently muted."""
+        return self._mute

requirements_all.txt

@@ -379,6 +379,7 @@ mutagen==1.37.0
 myusps==1.1.1
 
 # homeassistant.components.media_player.nad
+# homeassistant.components.media_player.nadtcp
 nad_receiver==0.0.6
 
 # homeassistant.components.discovery