203 lines
8.0 KiB
Python
203 lines
8.0 KiB
Python
#!/usr/bin/env python2
|
|
from __future__ import print_function
|
|
import ast
|
|
import binascii
|
|
import re
|
|
import subprocess
|
|
from collections import namedtuple
|
|
|
|
from ansible.module_utils.basic import *
|
|
|
|
DOCUMENTATION = '''
|
|
---
|
|
module: xrandr_facts
|
|
short_description: "gather facts about connected monitors and available modelines"
|
|
description:
|
|
- This module needs a running x-server on a given display in order to successfully call xrandr.
|
|
Returns the dictionary "xrandr", wich contains all screens with output states, connected displays,
|
|
EDID info and their modes and a recommendation for the best fitting tv mode.
|
|
options:
|
|
display:
|
|
required: False
|
|
default: ":0"
|
|
description:
|
|
- the DISPLAY variable to use when calling xrandr
|
|
multi_display:
|
|
required: False
|
|
default: "False"
|
|
description:
|
|
- check additional screens (:0.0 .. :0.n) until xrandr fails to collect information
|
|
preferred_outpus:
|
|
required: False
|
|
default: ["HDMI", "DP", "DVI", "VGA", "TV": 0]
|
|
description:
|
|
- ranking of the preferred display connectors
|
|
preferred_refreshrates:
|
|
required: False
|
|
default: ["50", "60", "75", "30", "25"]
|
|
description:
|
|
- ranking of the preferred display refreshrate
|
|
preferred_resolutions:
|
|
required: False
|
|
default: ["7680x4320", "3840x2160", "1920x1080", "1280x720", "720x576"]
|
|
description:
|
|
- ranking of the preferred display resolutions
|
|
write_edids:
|
|
required: False
|
|
default: True
|
|
description:
|
|
- write edid data to /etc/X11/edid.{connector}.bin
|
|
'''
|
|
EXAMPLES = '''
|
|
- name: "collect facts for connected displays"
|
|
action: xserver_facts
|
|
display: ":0"
|
|
|
|
- debug:
|
|
var: xrandr
|
|
'''
|
|
|
|
ARG_SPECS = {
|
|
'display': dict(default=":0", type='str', required=False),
|
|
'multi_display': dict(default=False, type='bool', required=False),
|
|
'preferred_outputs': dict(
|
|
default=["HDMI", "DP", "DVI", "VGA", "TV"], type='list', required=False),
|
|
'preferred_refreshrates': dict(
|
|
default=[50, 60, 75, 30, 25], type='list', required=False),
|
|
'preferred_resolutions': dict(
|
|
default=[
|
|
"7680x4320", "3840x2160", "1920x1080", "1280x720", "720x576"],
|
|
type='list', required=False),
|
|
'write_edids': dict(default=True, type='bool', required=False),
|
|
}
|
|
|
|
SCREEN_REGEX = re.compile("^(?P<screen>Screen\s\d+:)(?:.*)")
|
|
CONNECTOR_REGEX = re.compile(
|
|
"^(?P<connector>.*-\d+)\s(?P<connection_state>connected|disconnected)\s(?P<primary>primary)?")
|
|
MODE_REGEX = re.compile("^\s+(?P<resolution>\d{3,}x\d{3,}).*")
|
|
|
|
Mode = namedtuple('Mode', ['connection', 'resolution', 'refreshrate'])
|
|
|
|
def check_for_screen(line):
|
|
"""check line for screen information"""
|
|
match = re.match(SCREEN_REGEX, line)
|
|
if match:
|
|
return match.groupdict()['screen']
|
|
|
|
def check_for_connection(line):
|
|
"""check line for connection name and state"""
|
|
match = re.match(CONNECTOR_REGEX, line)
|
|
connector = None
|
|
is_connected = False
|
|
if match:
|
|
match = match.groupdict()
|
|
connector = match['connector']
|
|
is_connected = True if match['connection_state'] == 'connected' else False
|
|
return connector, is_connected
|
|
|
|
def get_indentation(line):
|
|
"""return the number of leading whitespace characters"""
|
|
return len(line) - len(line.lstrip())
|
|
|
|
def sort_mode(mode):
|
|
"""rate modes by several criteria"""
|
|
connection_score = 0
|
|
rrate_score = 0
|
|
resolution_score = 0
|
|
preferred_rrates = module.params['preferred_refreshrates']
|
|
# [50, 60]
|
|
preferred_resolutions = module.params['preferred_resolutions']
|
|
# ["7680x4320", "3840x2160", "1920x1080", "1280x720", "720x576"]
|
|
preferred_outputs = module.params['preferred_outputs']
|
|
# ["HDMI", "DP", "DVI", "VGA"]
|
|
if mode.refreshrate in preferred_rrates:
|
|
rrate_score = len(preferred_rrates) - preferred_rrates.index(mode.refreshrate)
|
|
if mode.resolution in preferred_resolutions:
|
|
resolution_score = len(preferred_resolutions) - preferred_resolutions.index(mode.resolution)
|
|
x_resolution, y_resolution = (int(n) for n in mode.resolution.split('x'))
|
|
connection = mode.connection.split('-')[0]
|
|
if connection in preferred_outputs:
|
|
connection_score = len(preferred_outputs) - preferred_outputs.index(connection)
|
|
return (rrate_score, resolution_score, x_resolution, y_resolution, connection_score)
|
|
|
|
def parse_xrandr_verbose(iterator):
|
|
"""parse the output of xrandr --verbose using an iterator delivering single lines"""
|
|
xorg = {}
|
|
is_connected = False
|
|
for line in iterator:
|
|
if line.startswith('Screen'):
|
|
screen = check_for_screen(line)
|
|
xorg[screen] = {}
|
|
elif 'connected' in line:
|
|
connector, is_connected = check_for_connection(line)
|
|
xorg[screen][connector] = {
|
|
'is_connected': is_connected,
|
|
'EDID': '',
|
|
'modes': {},
|
|
'preferred': '',
|
|
'current': '',
|
|
'auto': '',
|
|
}
|
|
elif is_connected and 'EDID:' in line:
|
|
edid_str = ""
|
|
outer_indentation = get_indentation(line)
|
|
while True:
|
|
line = next(iterator)
|
|
if get_indentation(line) > outer_indentation:
|
|
edid_str += line.strip()
|
|
else:
|
|
break
|
|
xorg[screen][connector]['EDID'] = edid_str
|
|
elif is_connected and "MHz" in line and not "Interlace" in line:
|
|
match = re.match(MODE_REGEX, line)
|
|
if match:
|
|
match = match.groupdict()
|
|
preferred = bool("+preferred" in line)
|
|
current = bool("*current" in line)
|
|
|
|
while True:
|
|
line = next(iterator)
|
|
if line.strip().startswith('v:'):
|
|
refresh_rate = ast.literal_eval(line.split()[-1][:-2])
|
|
rrate = int(round(refresh_rate))
|
|
if xorg[screen][connector]['modes'].get(match['resolution']) is None:
|
|
xorg[screen][connector]['modes'][match['resolution']] = []
|
|
if rrate not in xorg[screen][connector]['modes'][match['resolution']]:
|
|
xorg[screen][connector]['modes'][match['resolution']].append(rrate)
|
|
if preferred:
|
|
xorg[screen][connector]['preferred'] = "{}_{}".format(
|
|
match['resolution'], rrate)
|
|
if current:
|
|
xorg[screen][connector]['current'] = "{}_{}".format(
|
|
match['resolution'], rrate)
|
|
break
|
|
return xorg
|
|
|
|
def output_data(data, write_edids=True):
|
|
if data:
|
|
modes = []
|
|
for _, screen_data in data.items():
|
|
for connector, connection_data in screen_data.items():
|
|
if connection_data.get('EDID') and write_edids:
|
|
with open('/etc/X11/edid.{}.bin'.format(connector), 'wb') as edid:
|
|
edid.write(binascii.a2b_hex(connection_data['EDID']))
|
|
for resolution, refreshrates in connection_data['modes'].items():
|
|
for refreshrate in refreshrates:
|
|
modes.append(Mode(connector, resolution, refreshrate))
|
|
if modes:
|
|
best_mode = max(modes, key=sort_mode)
|
|
data['best_tv_mode'] = best_mode
|
|
|
|
#print(json.dumps(data, sort_keys=True, indent=4))
|
|
module.exit_json(changed=True if write_edids else False, ansible_facts={'xrandr': data})
|
|
|
|
if __name__ == '__main__':
|
|
module = AnsibleModule(argument_spec=ARG_SPECS, supports_check_mode=False,)
|
|
try:
|
|
d = subprocess.check_output(['xrandr', '-d', module.params['display'], '--verbose'], universal_newlines=True).splitlines()
|
|
except subprocess.CalledProcessError:
|
|
xorg_data = {}
|
|
else:
|
|
xorg_data = parse_xrandr_verbose(iter(d))
|
|
output_data(xorg_data, module.params['write_edids'])
|