107 lines
3.3 KiB
Python
107 lines
3.3 KiB
Python
"""Camera that loads a picture from a local file."""
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import logging
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import mimetypes
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import os
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import voluptuous as vol
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from homeassistant.const import CONF_NAME, ATTR_ENTITY_ID
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from homeassistant.components.camera import (
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Camera, CAMERA_SERVICE_SCHEMA, PLATFORM_SCHEMA)
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from homeassistant.components.camera.const import DOMAIN
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from homeassistant.helpers import config_validation as cv
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_LOGGER = logging.getLogger(__name__)
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CONF_FILE_PATH = 'file_path'
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DATA_LOCAL_FILE = 'local_file_cameras'
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DEFAULT_NAME = 'Local File'
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SERVICE_UPDATE_FILE_PATH = 'local_file_update_file_path'
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Required(CONF_FILE_PATH): cv.string,
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vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string
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})
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CAMERA_SERVICE_UPDATE_FILE_PATH = CAMERA_SERVICE_SCHEMA.extend({
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vol.Required(CONF_FILE_PATH): cv.string
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})
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def setup_platform(hass, config, add_entities, discovery_info=None):
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"""Set up the Camera that works with local files."""
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if DATA_LOCAL_FILE not in hass.data:
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hass.data[DATA_LOCAL_FILE] = []
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file_path = config[CONF_FILE_PATH]
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camera = LocalFile(config[CONF_NAME], file_path)
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hass.data[DATA_LOCAL_FILE].append(camera)
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def update_file_path_service(call):
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"""Update the file path."""
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file_path = call.data.get(CONF_FILE_PATH)
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entity_ids = call.data.get(ATTR_ENTITY_ID)
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cameras = hass.data[DATA_LOCAL_FILE]
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for camera in cameras:
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if camera.entity_id in entity_ids:
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camera.update_file_path(file_path)
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return True
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hass.services.register(
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DOMAIN,
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SERVICE_UPDATE_FILE_PATH,
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update_file_path_service,
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schema=CAMERA_SERVICE_UPDATE_FILE_PATH)
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add_entities([camera])
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class LocalFile(Camera):
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"""Representation of a local file camera."""
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def __init__(self, name, file_path):
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"""Initialize Local File Camera component."""
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super().__init__()
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self._name = name
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self.check_file_path_access(file_path)
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self._file_path = file_path
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# Set content type of local file
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content, _ = mimetypes.guess_type(file_path)
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if content is not None:
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self.content_type = content
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def camera_image(self):
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"""Return image response."""
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try:
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with open(self._file_path, 'rb') as file:
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return file.read()
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except FileNotFoundError:
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_LOGGER.warning("Could not read camera %s image from file: %s",
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self._name, self._file_path)
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def check_file_path_access(self, file_path):
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"""Check that filepath given is readable."""
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if not os.access(file_path, os.R_OK):
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_LOGGER.warning("Could not read camera %s image from file: %s",
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self._name, file_path)
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def update_file_path(self, file_path):
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"""Update the file_path."""
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self.check_file_path_access(file_path)
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self._file_path = file_path
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self.schedule_update_ha_state()
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@property
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def name(self):
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"""Return the name of this camera."""
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return self._name
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@property
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def device_state_attributes(self):
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"""Return the camera state attributes."""
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return {
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'file_path': self._file_path,
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}
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