142 lines
4.9 KiB
Python
142 lines
4.9 KiB
Python
"""
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Camera platform that has a Raspberry Pi camera.
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For more details about this platform, please refer to the documentation at
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https://home-assistant.io/components/camera.rpi_camera/
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"""
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import os
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import subprocess
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import logging
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import shutil
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import voluptuous as vol
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from homeassistant.components.camera import (Camera, PLATFORM_SCHEMA)
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from homeassistant.const import (CONF_NAME, CONF_FILE_PATH,
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EVENT_HOMEASSISTANT_STOP)
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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_HORIZONTAL_FLIP = 'horizontal_flip'
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CONF_IMAGE_HEIGHT = 'image_height'
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CONF_IMAGE_QUALITY = 'image_quality'
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CONF_IMAGE_ROTATION = 'image_rotation'
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CONF_IMAGE_WIDTH = 'image_width'
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CONF_TIMELAPSE = 'timelapse'
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CONF_VERTICAL_FLIP = 'vertical_flip'
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DEFAULT_HORIZONTAL_FLIP = 0
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DEFAULT_IMAGE_HEIGHT = 480
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DEFAULT_IMAGE_QUALITIY = 7
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DEFAULT_IMAGE_ROTATION = 0
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DEFAULT_IMAGE_WIDTH = 640
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DEFAULT_NAME = 'Raspberry Pi Camera'
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DEFAULT_TIMELAPSE = 1000
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DEFAULT_VERTICAL_FLIP = 0
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Optional(CONF_FILE_PATH): cv.string,
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vol.Optional(CONF_HORIZONTAL_FLIP, default=DEFAULT_HORIZONTAL_FLIP):
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vol.All(vol.Coerce(int), vol.Range(min=0, max=1)),
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vol.Optional(CONF_IMAGE_HEIGHT, default=DEFAULT_IMAGE_HEIGHT):
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vol.Coerce(int),
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vol.Optional(CONF_IMAGE_QUALITY, default=DEFAULT_IMAGE_QUALITIY):
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vol.All(vol.Coerce(int), vol.Range(min=0, max=100)),
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vol.Optional(CONF_IMAGE_ROTATION, default=DEFAULT_IMAGE_ROTATION):
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vol.All(vol.Coerce(int), vol.Range(min=0, max=359)),
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vol.Optional(CONF_IMAGE_WIDTH, default=DEFAULT_IMAGE_WIDTH):
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vol.Coerce(int),
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vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
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vol.Optional(CONF_TIMELAPSE, default=1000): vol.Coerce(int),
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vol.Optional(CONF_VERTICAL_FLIP, default=DEFAULT_VERTICAL_FLIP):
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vol.All(vol.Coerce(int), vol.Range(min=0, max=1)),
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})
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def kill_raspistill(*args):
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"""Kill any previously running raspistill process.."""
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subprocess.Popen(['killall', 'raspistill'],
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stdout=subprocess.DEVNULL,
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stderr=subprocess.STDOUT)
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def setup_platform(hass, config, add_devices, discovery_info=None):
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"""Set up the Raspberry Camera."""
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if shutil.which("raspistill") is None:
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_LOGGER.error("'raspistill' was not found")
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return False
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setup_config = (
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{
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CONF_NAME: config.get(CONF_NAME),
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CONF_IMAGE_WIDTH: config.get(CONF_IMAGE_WIDTH),
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CONF_IMAGE_HEIGHT: config.get(CONF_IMAGE_HEIGHT),
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CONF_IMAGE_QUALITY: config.get(CONF_IMAGE_QUALITY),
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CONF_IMAGE_ROTATION: config.get(CONF_IMAGE_ROTATION),
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CONF_TIMELAPSE: config.get(CONF_TIMELAPSE),
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CONF_HORIZONTAL_FLIP: config.get(CONF_HORIZONTAL_FLIP),
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CONF_VERTICAL_FLIP: config.get(CONF_VERTICAL_FLIP),
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CONF_FILE_PATH: config.get(CONF_FILE_PATH,
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os.path.join(os.path.dirname(__file__),
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'image.jpg'))
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}
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)
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hass.bus.listen_once(EVENT_HOMEASSISTANT_STOP, kill_raspistill)
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try:
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# Try to create an empty file (or open existing) to ensure we have
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# proper permissions.
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open(setup_config[CONF_FILE_PATH], 'a').close()
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add_devices([RaspberryCamera(setup_config)])
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except PermissionError:
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_LOGGER.error("File path is not writable")
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return False
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except FileNotFoundError:
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_LOGGER.error("Could not create output file (missing directory?)")
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return False
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class RaspberryCamera(Camera):
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"""Representation of a Raspberry Pi camera."""
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def __init__(self, device_info):
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"""Initialize Raspberry Pi camera component."""
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super().__init__()
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self._name = device_info[CONF_NAME]
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self._config = device_info
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# Kill if there's raspistill instance
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kill_raspistill()
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cmd_args = [
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'raspistill', '--nopreview', '-o', device_info[CONF_FILE_PATH],
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'-t', '0', '-w', str(device_info[CONF_IMAGE_WIDTH]),
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'-h', str(device_info[CONF_IMAGE_HEIGHT]),
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'-tl', str(device_info[CONF_TIMELAPSE]),
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'-q', str(device_info[CONF_IMAGE_QUALITY]),
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'-rot', str(device_info[CONF_IMAGE_ROTATION])
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]
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if device_info[CONF_HORIZONTAL_FLIP]:
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cmd_args.append("-hf")
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if device_info[CONF_VERTICAL_FLIP]:
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cmd_args.append("-vf")
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subprocess.Popen(cmd_args,
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stdout=subprocess.DEVNULL,
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stderr=subprocess.STDOUT)
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def camera_image(self):
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"""Return raspstill image response."""
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with open(self._config[CONF_FILE_PATH], 'rb') as file:
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return file.read()
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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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