Support for Roidmi vacuums

[PiotrMachowski]

Vacuums confirmed to use this API:

• roidmi.vacuum.v60 (Roidmi EVE Plus)
• viomi.vacuum.v18 (Viomi S9)

You can help in implementation of this feature by sending your map file and a screenshot from Xiaomi app at

piotr.machowski.dev [at] gmail [dot] com.

To get raw map file you have to use following config:

camera:
  - platform: xiaomi_cloud_map_extractor
    host: !secret xiaomi_vacuum_host
    token: !secret xiaomi_vacuum_token
    username: !secret xiaomi_cloud_username
    password: !secret xiaomi_cloud_password
    store_map: true
    force_api: roidmi

and then follow steps provided in documentation: Retrieving map.

[antyakushev]

I also own this vacuum, @PiotrMachowski, can you please tell how particularly you managed to extract the image from its map file?

[PiotrMachowski]

@antyakushev
Can you send me your map file at piotr.machowski.dev [at] gmail [dot] com?

Map decoding procedure:

• unzip the file (it's compressed in gzip format)

• can open it in text editor (e.g. Notepad++).

• the file will consist of 2 sections: map image and map description in JSON

• read image dimensions from JSON section

• recreate image using bytes from first section, but after skipping first 16 ones.

  Code

  import gzip
  from PIL import Image
  
  dir = "map_data/roidmi.vacuum.v60"
  gzip_file = open(f"{dir}/map_data.gz", "rb")
  gzip_content = gzip_file.read()
  gzip_file.close()
  raw = gzip.decompress(gzip_content)
  gzip_output_file = open(f"{dir}/map_data.output", "wb")
  gzip_output_file.write(raw)
  gzip_output_file.close()
  width = 183
  height = 267
  sub = raw[16:width * height * 16]
  colors = {}
  rand = random.Random()
  for i in range(256):
      colors[i] = (rand.randint(0, 255), rand.randint(0, 255), rand.randint(0, 255))
  image = Image.new('RGBA', (height, width))
  pixels = image.load()
  for y in range(width):
      for x in range(height):
          v = sub[y * height + x]
          pixels[x, y] = colors[v]
  image.save(f"{dir}/map_data.png")
  

[amaciasf]

I also want to help. How can I get the map file?

[PiotrMachowski]

@amaciasf I have updated description in the first comment

[antyakushev]

@PiotrMachowski Thanks, I succeeded extracting the image!
I've also sent you the map file.

[poisondima]

I sent you files for help.
P.S. Link to "Retrieving Map" in the first comment is invalid, you need to fix it.

[PiotrMachowski]

@poisondima thank you!

Link fixed ;)

[PiotrMachowski]

You can now check out version from this branch

[poisondima]

It works! Thank you!

[slimpdev]

For now need to replace "store_map: true" to "store_map_raw: true".