[mythtv-users] How to check if a tuner is in use

[Hika van den Hoven]

Hoi Bill and others,

My final result with your help. It returns the value for the status in
the returncode ($?). If you supply the -v or --verbose option it is
also printed to the screen. If the capture-device is not found, -1 (or
255) equal to not connected is returned. On error -2 (or 254) is
returned. -h or --help gives the options. Feel free to use it.

#!/usr/bin/env python2
# -*- coding: utf-8 -*-

import argparse, socket, urllib2, sys
from urllib2   import urlopen
from xml.etree import cElementTree as ET

parser = argparse.ArgumentParser(description='Get Status of Backend Encoders.')

parser.add_argument('-c', '--card', type=str, required=False, 
    metavar='<device>', default='/dev/video0',
    help='tv capture device, defaults to </dev/video0>')

parser.add_argument('-m', '--host', type=str, required=False, 
    metavar='<hostname>', default=socket.gethostname(),
    help='backend dns hostname, defaults to the local hostname')

parser.add_argument('-v', '--verbose', action='store_true', 
    required=False, help='print the result to the screen')

args = parser.parse_args()

URL0 = 'http://{}:6544//Myth/GetHostName'.format(args.host)
try:
    response = ET.parse(urlopen(URL0))
    root = response.getroot()
except:
    if args.verbose:
        print 'GetHostName failed, is the backend running?'
    sys.exit(-2)

URL1 = 'http://{}:6544/Capture/GetCaptureCardList?HostName={}' \
    .format(args.host, root.text)
try:
    response = ET.parse(urlopen(URL1))
except:
    if args.verbose:
        print 'GetCaptureCardList failed, is the backend running?'
    sys.exit(-2)

for element1 in response.findall('CaptureCards/CaptureCard'):
    if element1.findtext('VideoDevice') == args.card:
        URL2 = 'http://{}:6544/Dvr/GetEncoderList'.format(args.host)
        try:
            response = ET.parse(urlopen(URL2))
        except:
            if args.verbose:
                print'GetEncoderList failed, is the backend running?'
            sys.exit(-2)
        for element2 in response.findall('Encoders/Encoder'):
            if element2.findtext('Id') == element1.findtext('CardId'):
                if args.verbose:
                    if int(element2.findtext('State')) == -1:
                        print 'The status of %s on %s is: -1, not Connected' \
                            % (args.card, args.host)
                    elif int(element2.findtext('State')) == 0:
                        print 'The status of %s on %s is: 0, Inactive' \
                            % (args.card, args.host)
                    elif int(element2.findtext('State')) == 1:
                        print 'The status of %s on %s is: 1, watching Live TV' \
                            % (args.card, args.host)
                    elif int(element2.findtext('State')) == 7:
                        print 'The status of %s on %s is: 7, Recording' \
                            % (args.card, args.host)
                    else:
                        print 'The status of %s on %s is: %s' % \
                            (args.card, args.host, \
                            element2.findtext('State'))
                sys.exit(int(element2.findtext('State')))
                break 
        break
if args.verbose:
    print 'The capture device is not found in MythTV'
sys.exit(-1)


Tot mails,
  Hika                            mailto:hikavdh at gmail.com

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Zonder leven is er geen hoop
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