How to read/interpret "supported_features"?

tyron · February 7, 2024, 1:57am

If anyone without a developer background lands in this thread, here is a tip. To find out what features are enabled, you can either do all the boolean and bitwise operations above, or you can follow a much simpler approach.

Suppose you want to find out what is supported on OP’s case (supported_features: 51765). You need to look at the constants SUPPORT_* on that file indeed (https://github.com/home-assistant/core/blob/9250dd0355eee4721b17c416acd5331d1ac84c76/homeassistant/components/media_player/const.py). But the trick is to find the largest number that is lower than your target, and subtract.

So for 51765, that largest number would be SHUFFLE_SET = 32768, as the next one (SELECT_SOUND_MODE) is already over your initial number.

So you know your device supports SHUFFLE_SET. You now have a remainder of 18997 (51765 - 32768). So you apply again, finding the largest number on the table that is lower than your target value, calculating the remainder, and you repeat until you reach zero.

PLAY = 16384 (remainder 2613)
SELECT_SOURCE = 2048 (remainder 565)
PLAY_MEDIA = 512 (remainder 53)
NEXT_TRACK = 32 (remainder 21)
PREVIOUS_TRACK = 16 (remainder 5)
VOLUME_SET = 4 (remainder 1)
PAUSE = 1 (remainder 0, stop)

nickrout · February 7, 2024, 2:14am

Again, you are just decoding binary. Your methodology is slightly easier,

Viking · July 28, 2024, 7:53am

Where did you find this?

filmgarage · July 28, 2024, 8:54am

I have no idea anymore but a search just lead me to the following info as part of the Home Assistant code:

github.com

home-assistant/core/blob/3ad2456dd92833e8b62726e39da8e8deb63c5f5b/homeassistant/components/cover/init.py

"""Support for Cover devices."""

from __future__ import annotations

from collections.abc import Callable
from datetime import timedelta
from enum import IntFlag, StrEnum
import functools as ft
from functools import cached_property
import logging
from typing import Any, final

import voluptuous as vol

from homeassistant.config_entries import ConfigEntry
from homeassistant.const import (
    SERVICE_CLOSE_COVER,
    SERVICE_CLOSE_COVER_TILT,
    SERVICE_OPEN_COVER,
    SERVICE_OPEN_COVER_TILT,

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