[mythtv-commits] Re: Ticket #13: Tune to an on air channel when the current channel is unavailable.

[MythTV]

#13: Tune to an on air channel when the current channel is unavailable.
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 Reporter:  stuarta at squashedfrog.net  |        Owner:  danielk 
     Type:  defect                    |       Status:  reopened
 Priority:  minor                     |    Milestone:  0.19    
Component:  mythtv                    |      Version:  head    
 Severity:  low                       |   Resolution:          
       Cc:                            |  
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Changes (by stuarta at squashedfrog.net):

  * resolution:  fixed =>
  * status:  closed => reopened

Comment:

 I've been testing for the last few days.

 rev 7064 + signal monitoring patch.

 This fixes problem 3 in the list.

 When testing case 2 I was able to watch the other channel which timeshares
 with the
 channel that went off air, although I was tuned to the logical channel
 that was off
 air. I'm happy to leave this part as resolved for now, since proper
 handling of this
 requires finishing off interactive tv.

 (The following I've tested on 7082 + signal monitoring as well.)

 What no longer works is case 1. This is because the channels here in the
 UK logically
 go off air, but in practice they are still on air. What happens is the PMT
 is updated
 from a video + audio stream to only a data stream(s). So the signal
 monitoring isn't
 going to help us here.

 When the backend starts up on one of these "off air" channels, it can
 still get a
 valid signal lock, but there is no TV service present. There used to be a
 check in
 dvbchannel.cpp

      if (!chan_opts.pmt.OnAir())
      {
          ERROR(QString("Channel #%1 is off air.").arg(chan));
          return false;
      }

 This did pick up this case.
 We will need to check something like this when entering live tv.

-- 
Ticket URL: <http://cvs.mythtv.org/trac/ticket/13>
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