yavdr-ansible/roles/kodi/templates/set-kodi-display.j2
Alexander Grothe 65e2ac1e5f Disable screen blanking by default via xorg configuration snippet
Further changes:
- add ppa:yavdr/experimental-kodi for KODI 18
- add set-kodi-display script to allow switching DISPLAY in dual
screen configuration (inkompatible with KODI 17)
2019-02-04 17:57:34 +01:00

97 lines
3.3 KiB
Django/Jinja

#!/usr/bin/env python3
"""
{{ ansible_managed }}
This Script changes the monitor in KODI's guisettings.xml to the wanted output
according to the DISPLAY environment variable. It works with KODI 18 (not KODI 17!).
"""
import os
import sys
import subprocess
import xml.etree.ElementTree as ET
GUISETTINGS = '/var/lib/vdr/.kodi/userdata/guisettings.xml'
CACHE_DIR = '/var/lib/vdr/.kodi/.display_cache'
VIDEOSCREEN_TEMPLATE = """<settings version="2">
<setting id="videoscreen.monitor" default="true">{}</setting>
</settings>"""
def get_output_names():
"""
get display name from xrandr output for given DISPLAY environment variable
"""
xrandr_output = [
l for l in subprocess.check_output(
["xrandr"],
env={"DISPLAY": os.environ["DISPLAY"]}
).decode("utf-8").splitlines()
]
return [l.split()[0] for l in xrandr_output if " connected " in l]
def parse_template(template_path, template, output=""):
"""read videoscreen settings from backup or create a stub file"""
try:
xml_tree = ET.parse(template_path)
except FileNotFoundError:
print("{} not found, creating stub file".format(template_path))
xml_template = ET.fromstring(template.format(output))
xml_tree = ET.ElementTree(xml_template)
finally:
xml_tree.write(template_path)
return xml_tree
def backup_videoscreen():
"""parse guisettings.xml for display name an backup videoscreen data"""
tree = parse_template(GUISETTINGS, VIDEOSCREEN_TEMPLATE, "Default")
root = tree.getroot()
videoscreen = root.find("./setting[@id='videoscreen.monitor']")
output = videoscreen.text
xml_path = os.path.join(CACHE_DIR, '{}-videodevice.xml'.format(output))
base_tree = ET.fromstring('<settings version="2"></settings>')
xml_tree = ET.ElementTree(base_tree)
backup_root = xml_tree.getroot()
backup_root.insert(0, videoscreen)
xml_tree.write(xml_path)
print("written backup for {} to {}".format(output, xml_path))
def change_videoscreen(output, new_videoscreen):
"""change videoscreen node to content of backup file"""
tree = parse_template(GUISETTINGS, VIDEOSCREEN_TEMPLATE, output)
root = tree.getroot()
videoscreen = root.find('./setting[@id="videoscreen.monitor"]')
if videoscreen is not None:
videoscreen.text = new_videoscreen.text
else:
videoscreen = root.find("./settings")
root.insert(0, new_videoscreen)
tree.write(GUISETTINGS)
return tree
if __name__ == '__main__':
output = get_output_names()[0]
if not output:
sys.exit("Error: no screen name found")
try:
os.makedirs(CACHE_DIR, exist_ok=True)
except PermissionError:
sys.exit("Error: insufficient permissions to create cachedir {}".format(
CACHE_DIR))
try:
backup_videoscreen()
except FileNotFoundError:
print("{} does not exist".format(GUISETTINGS))
except Exception as e:
print("Could not backup videoscreen.monitor:", str(e))
xml_path = os.path.join(CACHE_DIR, '{}-videodevice.xml'.format(output))
videodir_xml = parse_template(xml_path, VIDEOSCREEN_TEMPLATE, output)
videodir_root = videodir_xml.getroot()
new_videoscreen = videodir_root.find("./setting[@id='videoscreen.monitor']")
guisettings_xml = change_videoscreen(output, new_videoscreen)