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# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.
import logging
import os
import subprocess
try:
import screeninfo
except ImportError:
screeninfo = None
import RPi.GPIO as GPIO
from vcgencmd import Vcgencmd
from odoo.addons.hw_drivers.interface import Interface
_logger = logging.getLogger(__name__)
class DisplayInterface(Interface):
_loop_delay = 0
connection_type = 'display'
def get_devices(self):
display_devices = {}
dummy_display = {
'distant_display': {
'identifier': 'distant_display',
'name': 'Distant Display',
}
}
if screeninfo is None:
# On IoT image < 24.10 we don't have screeninfo installed, so we can't get the connected displays
# We use old method to get the connected display
hdmi_ports = {'hdmi_0': 2, 'hdmi_1': 7} if 'Pi 4' in GPIO.RPI_INFO.get('TYPE') else {'hdmi_0': 2}
try:
for x_screen, port in enumerate(hdmi_ports):
if Vcgencmd().display_power_state(hdmi_ports.get(port)) == 'on':
display_devices[port] = self._add_device(port, x_screen)
except subprocess.CalledProcessError:
_logger.warning('Vcgencmd "display_power_state" method call failed')
return display_devices or dummy_display
try:
os.environ['DISPLAY'] = ':0'
for x_screen, monitor in enumerate(screeninfo.get_monitors()):
display_devices[monitor.name] = self._add_device(monitor.name, x_screen)
return display_devices or dummy_display
except screeninfo.common.ScreenInfoError:
# If no display is connected, screeninfo raises an error, we return the distant display
return dummy_display
@classmethod
def _add_device(cls, display_identifier, x_screen):
"""Creates a display_device dict.
:param display_identifier: the identifier of the display
:param x_screen: the x screen number
:return: the display device dict
"""
return {
'identifier': display_identifier,
'name': 'Display - ' + display_identifier,
'x_screen': str(x_screen),
}
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