MythTV DPMS Preview Disabler · Mar 26, 00:56 by Shannon Wynter

Because the comment in the top of this file is so complete, I’m just going to include the file and let you read it – Download link is at the bottom as usual :)

1. #!/usr/bin/perl
2. #############################################################
3. # MDPD (Myth DPMS Preview Disabler) By Shannon Wynter
4. # http://fremnet.net/article/254/mythtv-dpms-preview-disabler
5. #############################################################
6. # One of the going concerns I have with MythTV is that when
7. # I walk away from my TV after watching a show (leaving DPMS
8. # to take care of the power saving) it's frequently left in
9. # the watch recordings screen.
10. #
11. # Because of the Preview available in this screen the hard
12. # disk never spins down and ticks over quite happily until
13. # you come back and wake the machine back up.
14. #
15. # This simple script checks to see if DPMS has changed from
16. # the on state to any other state, then asks MythTV what it
17. # is doing. If MythTV says that it's in Watch Recordings it
18. # tells MythTV to jump back to Main Menu.
19. #
20. # Installation:
21. # 1) Install required CPAN modules
22. #       Net::Telnet   (Gentoo: emerge dev-perl/Net-Telnet)
23. #       X11::Protocol (Gentoo: emerge dev-perl/X11-Protocol)
24. #
25. # 2) Make sure you've enabled telnet remote control in your
26. #    MythFrontend
27. #
28. # 3) Run this script
29. #       I normally pop it into .xinitrc before launching
30. #       mythfrontend as /path/to/mpdp.pl &
31. #
32.  
33.  
34. use strict;
35. use X11::Protocol;
36. use X11::Protocol::Ext::DPMS;
37. use Net::Telnet;
38.  
39. # I assume you want to be connecting to a local socket
40. my $host = "localhost";
41. my $port = 6546;
42.  
43. # Configure default Net::Telnet object
44. my $telnet = new Net::Telnet (
45. Timeout => 10,
46. Port    => $port,
47. Errmode => 'die',
48. Prompt  => '/#/'
49. );
50.  
51. # Connect to X and initialize the extension to use
52. my $x = X11::Protocol->new();
53. $x->init_extension('DPMS');
54.  
55. # Storage
56. my $power_level = '';
57.  
58. # Loop forever
59. while(1) {
60. # Archive the power level and get the current one
61. my $old_pl = $power_level;
62. ($power_level, undef) = $x->DPMSInfo();
63.  
64. # See if we've recently switched from DPMSModeOn
65. if(($old_pl eq 'DPMSModeOn') && ($power_level ne 'DPMSModeOn')) {
66.   # Connect to mythfrontend
67.   $telnet->open( $host );
68.   $telnet->waitfor('/#/i');
69.  
70.   # Ask it where we are
71.   my $line = join('',$telnet->cmd("query location"));
72.   chomp($line);
73.  
74.   # In the PlaybackBox?
75.   if ($line =~ /PlaybackBox/i) {
76.   # Leave the PlaybackBox
77.   $telnet->cmd("jump mainmenu");
78.   }
79.   $telnet->close();
80. }
81. sleep 60;
82. }
83.  
84. Download this code: mpdp.pl (Downloaded 42 time(s))

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