Source code for pyatv.interface
"""API exposed by the library."""
import re
import inspect
import hashlib
from abc import (ABCMeta, abstractmethod, abstractproperty)
from pyatv import (convert, exceptions)
# TODO: make these methods more pretty and safe
def _get_first_sentence_in_pydoc(obj):
doc = obj.__doc__
index = doc.find('.')
if index == -1:
# Here we have no leading . so return everything
return doc
# Try to find the first complete sentence and respect
# abbreviations correctly
match = re.findall(r'(.*\.[^A-Z]*)\.(?: [A-Z].*|)', doc)
if len(match) == 1:
return match[0]
return doc[0:index]
[docs]def retrieve_commands(obj, developer=False):
"""Retrieve all commands and help texts from an API object."""
commands = {} # Name and help
for member in [obj]:
for func in member.__dict__:
if not inspect.isfunction(member.__dict__[func]) and \
not isinstance(member.__dict__[func], property):
continue
if func.startswith('_'):
continue
if func.startswith('dev_') and not developer:
continue
commands[func] = _get_first_sentence_in_pydoc(
member.__dict__[func])
return commands
[docs]class RemoteControl(object):
"""Base class for API used to control an Apple TV."""
__metaclass__ = ABCMeta
# pylint: disable=invalid-name
@abstractmethod
[docs] def up(self):
"""Press key up."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def down(self):
"""Press key down."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def left(self):
"""Press key left."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def right(self):
"""Press key right."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def play(self):
"""Press key play."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def pause(self):
"""Press key play."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def stop(self):
"""Press key stop."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def next(self):
"""Press key next."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def previous(self):
"""Press key previous."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def select(self):
"""Press key select."""
raise exceptions.NotSupportedError
@abstractmethod
@abstractmethod
@abstractmethod
[docs] def set_position(self, pos):
"""Seek in the current playing media."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def set_shuffle(self, is_on):
"""Change shuffle mode to on or off."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def set_repeat(self, repeat_mode):
"""Change repeat mode."""
raise exceptions.NotSupportedError
[docs]class Playing(object):
"""Base class for retrieving what is currently playing."""
__metaclass__ = ABCMeta
def __str__(self):
"""Convert this playing object to a readable string."""
output = []
output.append('Media type: {0}'.format(
convert.media_type_str(self.media_type)))
output.append('Play state: {0}'.format(
convert.playstate_str(self.play_state)))
if self.title is not None:
output.append(' Title: {0}'.format(self.title))
if self.artist is not None:
output.append(' Artist: {0}'.format(self.artist))
if self.album is not None:
output.append(' Album: {0}'.format(self.album))
position = self.position
total_time = self.total_time
if position is not None and total_time is not None and total_time != 0:
output.append(' Position: {0}/{1}s ({2:.1%})'.format(
position, total_time, float(position)/float(total_time)))
elif position is not None and position != 0:
output.append(' Position: {0}s'.format(position))
elif total_time is not None and position != 0:
output.append('Total time: {0}s'.format(total_time))
if self.repeat is not None:
output.append(' Repeat: {0}'.format(
convert.repeat_str(self.repeat)))
if self.shuffle is not None:
output.append(' Shuffle: {0}'.format(self.shuffle))
return '\n'.join(output)
@property
def hash(self):
"""Create a unique hash for what is currently playing.
The hash is based on title, artist, album and total time. It should
always be the same for the same content, but it is not guaranteed.
"""
base = '{0}{1}{2}{3}'.format(
self.title, self.artist, self.album, self.total_time)
return hashlib.sha256(base.encode('utf-8')).hexdigest()
@abstractproperty
def media_type(self):
"""Type of media is currently playing, e.g. video, music."""
raise exceptions.NotSupportedError
@abstractproperty
def play_state(self):
"""Play state, e.g. playing or paused."""
raise exceptions.NotSupportedError
@abstractproperty
def title(self):
"""Title of the current media, e.g. movie or song name."""
raise exceptions.NotSupportedError
@abstractproperty
def artist(self):
"""Artist of the currently playing song."""
raise exceptions.NotSupportedError
@abstractproperty
def album(self):
"""Album of the currently playing song."""
raise exceptions.NotSupportedError
@abstractproperty
def total_time(self):
"""Total play time in seconds."""
raise exceptions.NotSupportedError
@abstractproperty
def position(self):
"""Position in the playing media (seconds)."""
raise exceptions.NotSupportedError
@abstractproperty
def shuffle(self):
"""If shuffle is enabled or not."""
raise exceptions.NotSupportedError
@abstractproperty
def repeat(self):
"""Repeat mode."""
raise exceptions.NotSupportedError
[docs]class PushUpdater(object):
"""Base class for push/async updates from an Apple TV."""
__metaclass__ = ABCMeta
@property
def listener(self):
"""Object (PushUpdaterListener) that receives updates."""
raise exceptions.NotSupportedError
@listener.setter # type: ignore
@abstractmethod
def listener(self, listener):
"""Object that receives updates.
This should be an object implementing two methods:
- playstatus_update(updater, playstatus)
- playstatus_error(updater, exception)
The first method is called when a new update happens and the second one
is called if an error occurs. Please not that if an error happens, push
updates will be stopped. So they will need to be enabled again, e.g.
from the error method. A delay should preferably be passed to start()
to avoid an infinite error-loop.
"""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def start(self, initial_delay=0):
"""Begin to listen to updates.
If an error occurs, start must be called again.
"""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def stop(self):
"""No longer listen for updates."""
raise exceptions.NotSupportedError
[docs]class AirPlay(object):
"""Base class for AirPlay functionality."""
__metaclass__ = ABCMeta
@abstractmethod
[docs] def generate_credentials(self):
"""Create new credentials for authentication.
Credentials that have been authenticated shall be saved and loaded with
load_credentials before playing anything. If credentials are lost,
authentication must be performed again.
"""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def load_credentials(self, credentials):
"""Load existing credentials."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def verify_authenticated(self):
"""Check if loaded credentials are verified."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def start_authentication(self):
"""Begin authentication proces (show PIN on screen)."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def finish_authentication(self, pin):
"""End authentication process with PIN code."""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def play_url(self, url, **kwargs):
"""Play media from an URL on the device."""
raise exceptions.NotSupportedError
[docs]class AppleTV(object):
"""Base class representing an Apple TV."""
__metaclass__ = ABCMeta
@abstractmethod
[docs] def login(self):
"""Perform an explicit login.
Not needed as login is performed automatically.
"""
raise exceptions.NotSupportedError
@abstractmethod
[docs] def logout(self):
"""Perform an explicit logout.
Must be done when session is no longer needed to not leak resources.
"""
raise exceptions.NotSupportedError
@abstractproperty
def remote_control(self):
"""Return API for controlling the Apple TV."""
raise exceptions.NotSupportedError
@abstractproperty
def metadata(self):
"""Return API for retrieving metadata from the Apple TV."""
raise exceptions.NotSupportedError
@abstractproperty
def push_updater(self):
"""Return API for handling push update from the Apple TV."""
raise exceptions.NotSupportedError
@abstractproperty
def airplay(self):
"""Return API for working with AirPlay."""
raise exceptions.NotSupportedError