[mythtv] Ticket #1847: DVB - Backend fails to tune to a channel on a different input

[Mark Buechler]

After looking at this a bit longer I'm coming around to my previous
conclusions. If the input information were in the tuning request,
SwitchToInput would be called. ANd from what I can tell, the only place
where the input information get set is within TVRec::TuningGetChanNum which
calls ProgramInfo::GetChannel(). However, GetChannel() is never called
because the pointer to ProgramInfo within the tuning request is never
defined. I can't figure out where that's supposed to be defined.

- Mark.

On 5/24/06, Mark Buechler <mark.buechler at gmail.com> wrote:
>
> Ok, it looks like SetChannelByString is called when we're on the same
> input (which is correct) but is also called when we switch sources (which I
> assume is incorrect). So a bit of code is needed to detect an input change
> and if so call SwitchToInput instead. Do I have this correct?
>
> - Mark.
>
>
> On 5/24/06, Daniel Kristjansson <danielk at cuymedia.net> wrote:
> >
> > On Wed, 2006-05-24 at 08:53 -0400, Mark Buechler wrote:
> > > #1847: DVB - Backend fails to tune to a channel on a different input
> > > Daniel, I'd really like to get this knocked out so I can start testing
> > > the rest of the new stuff. Would you mind giving me some pointers
> > > where to look to resolve this? To be honest, after looking at the
> > > channel change code a couple hours my head is spinning.
> >
> > Yeah, it looks like there are two possible problems:
> > * DVBChannel::SetChannelByString() is being called when SwitchToInput()
> >    should be called. Somehow the input variable in the tuning request
> >    is being reset, or just never set.
> > * DVBChannel::SetChannelByString() does not check if a channel not on
> >    the current input exists on another input. If you look at other
> >    Channel classes, like the one in channel.cpp, you will see that
> >    they switch the to another input when needed.
> >
> > I don't know if problem #1 exists. I know problem #2 exists, but I don't
> > know if that is why you are having problems.
> >
> > -- Daniel
> >
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> >
>
>
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