Ticket #6966: myth-chan

File myth-chan, 2.8 KB (added by nickj-fox@…, 12 years ago)

external channel changer wrapper for ivtv tuners

Line 
1#!/usr/bin/env python
2#
3#       myth-chan
4#               A wrapper for MythTV external channel changers
5#               This is setup to remedy a known audio instability with certian
6#               TV Capture devices.
7#       
8#       Copyright 2009 Nick Fox <nfox@foxmediasystems.com>
9#       
10#       This program is free software; you can redistribute it and/or modify
11#       it under the terms of the GNU General Public License as published by
12#       the Free Software Foundation; either version 2 of the License, or
13#       (at your option) any later version.
14#       
15#       This program is distributed in the hope that it will be useful,
16#       but WITHOUT ANY WARRANTY; without even the implied warranty of
17#       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18#       GNU General Public License for more details.
19#       
20#       You should have received a copy of the GNU General Public License
21#       along with this program; if not, write to the Free Software
22#       Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
23#       MA 02110-1301, USA.
24
25
26# Get python defaults
27import os
28import sys
29from optparse import OptionParser
30import subprocess
31
32
33def main(self):
34        # Go Baby GO!
35        # Setup the options
36        parser = OptionParser()
37        parser.add_option("-c", "--dct-channel", nargs=3, help="Use DCT Channel Binary to change channels.\
38        usage: myth-chan <-c | --dct-channel> <port> <video_source> <channel>", dest="dct")
39        parser.add_option("-d", "--direct-tv", nargs=4, help="Use the DirectTV external channel changer.\
40        usage: myth-chan <-d | --direct-tv> <set-top-box-type> <port> <video_source> <channel>", dest="dtv")
41               
42        (options, args) = parser.parse_args()
43
44        if options.dct:
45                dct_channel(options.dct[0],options.dct[1],options.dct[2])
46        if options.dtv:
47                dtv_channel(options.dtv[0],options.dtv[1],options.dtv[2],options.dtv[3])
48
49def dct_channel(port, vidsrc, chan):
50        # Wrapper up and Use the channel binary
51        try:
52                if os.path.exists("/usr/local/bin/channel"):
53                        cmd = "/usr/local/bin/channel -p " + port + " " + chan
54                        subprocess.Popen4(["v4l2-ctl -d " + vidsrc + " --set-audio-input=2"])
55                        subprocess.Popen4([cmd])
56                        subprocess.Popen4(["v4l2-ctl -d " + vidsrc + " --set-audio-input=1"])
57                else:
58                        print "/usr/local/bin/channel not found!"
59        except:
60                print "Channel Binary failed to change channels."
61
62def dtv_channel(stb_type, port, vidsrc, chan):
63        # directtv.pl wrapper
64        try:
65                if os.path.exists("/usr/local/bin/directv.pl"):
66                        cmd = "/usr/local/bin/directtv.pl port " + port + " box_type " + stb_type + " setup_channel " + chan
67                        subprocess.Popen4(["v4l2-ctl -d " + vidsrc + " --set-audio-input=2"])
68                        subprocess.Popen4([cmd])
69                        subprocess.Popen4(["v4l2-ctl -d " + vidsrc + " --set-audio-input=1"])
70                else:
71                        print "/usr/local/bin/directv.pl not found!"
72        except:
73                print "directv.pl failed to change channels."
74       
75if __name__ == "__main__":
76    main(sys.argv[1:])