101 lines
3.1 KiB
Python
101 lines
3.1 KiB
Python
"""
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Support for Cameras with FFmpeg as decoder.
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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.ffmpeg/
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"""
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import asyncio
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import logging
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import voluptuous as vol
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from aiohttp import web
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from homeassistant.components.camera import Camera, PLATFORM_SCHEMA
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from homeassistant.components.ffmpeg import (
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async_run_test, get_binary, CONF_INPUT, CONF_EXTRA_ARGUMENTS)
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import homeassistant.helpers.config_validation as cv
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from homeassistant.const import CONF_NAME
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from homeassistant.util.async import run_coroutine_threadsafe
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DEPENDENCIES = ['ffmpeg']
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_LOGGER = logging.getLogger(__name__)
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DEFAULT_NAME = 'FFmpeg'
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Required(CONF_INPUT): cv.string,
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vol.Optional(CONF_EXTRA_ARGUMENTS): cv.string,
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vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
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})
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@asyncio.coroutine
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def async_setup_platform(hass, config, async_add_devices, discovery_info=None):
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"""Setup a FFmpeg Camera."""
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if not async_run_test(hass, config.get(CONF_INPUT)):
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return
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yield from async_add_devices([FFmpegCamera(hass, config)])
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class FFmpegCamera(Camera):
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"""An implementation of an FFmpeg camera."""
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def __init__(self, hass, config):
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"""Initialize a FFmpeg camera."""
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super().__init__()
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self._name = config.get(CONF_NAME)
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self._input = config.get(CONF_INPUT)
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self._extra_arguments = config.get(CONF_EXTRA_ARGUMENTS)
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def camera_image(self):
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"""Return bytes of camera image."""
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return run_coroutine_threadsafe(
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self.async_camera_image(), self.hass.loop).result()
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@asyncio.coroutine
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def async_camera_image(self):
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"""Return a still image response from the camera."""
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from haffmpeg import ImageSingleAsync, IMAGE_JPEG
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ffmpeg = ImageSingleAsync(get_binary(), loop=self.hass.loop)
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image = yield from ffmpeg.get_image(
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self._input, output_format=IMAGE_JPEG,
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extra_cmd=self._extra_arguments)
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return image
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@asyncio.coroutine
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def handle_async_mjpeg_stream(self, request):
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"""Generate an HTTP MJPEG stream from the camera."""
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from haffmpeg import CameraMjpegAsync
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stream = CameraMjpegAsync(get_binary(), loop=self.hass.loop)
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yield from stream.open_camera(
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self._input, extra_cmd=self._extra_arguments)
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response = web.StreamResponse()
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response.content_type = 'multipart/x-mixed-replace;boundary=ffserver'
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yield from response.prepare(request)
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try:
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while True:
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data = yield from stream.read(102400)
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if not data:
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break
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response.write(data)
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except asyncio.CancelledError:
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_LOGGER.debug("Close stream by browser.")
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response = None
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finally:
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yield from stream.close()
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if response is not None:
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yield from response.write_eof()
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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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