text: # -*- coding: utf-8 -*-
  # Part of Odoo. See LICENSE file for full copyright and licensing details.
  
  from re import sub, finditer
  import subprocess
  
  from odoo.addons.hw_drivers.interface import Interface
  
  
  class DisplayInterface(Interface):
      _loop_delay = 0
      connection_type = 'display'
  
      def get_devices(self):
          display_devices = {}
          displays = subprocess.check_output(['tvservice', '-l']).decode()
          x_screen = 0
          for match in finditer('Display Number (\d), type HDMI (\d)', displays):
              display_id, hdmi_id = match.groups()
              tvservice_output = subprocess.check_output(['tvservice', '-nv', display_id]).decode().strip()
              if tvservice_output:
                  display_name = tvservice_output.split('=')[1]
                  display_identifier = sub('[^a-zA-Z0-9 ]+', '', display_name).replace(' ', '_') + "_" + str(hdmi_id)
                  iot_device = {
                      'identifier': display_identifier,
                      'name': display_name,
                      'x_screen': str(x_screen),
                  }
                  display_devices[display_identifier] = iot_device
                  x_screen += 1
  
          if not len(display_devices):
              # No display connected, create "fake" device to be accessed from another computer
              display_devices['distant_display'] = {
                  'name': "Distant Display",
              }
  
          return display_devices
  