[mythtv] One STB connected to Firewire and TV card. Need to force mythtv to record one at a time

[Darwin O'Connor]

I have a sa3258HD digital box connected to my computer via both Firewire 
and SVideo to my old ATI TV Wonder card.

I use Rogers Cable in Canada and many channels are blocked from using 
the Firewire port, and I can't complain or they turn Firewire back off.

I've got things set up to record the channels I can via Firewire and the 
rest with the TV Card. The problem is that myth thinks they are two 
separate sources and tries to record both at the same time, but it can't 
because they are both connected to the same box tuned to one channel.

I've looked into the code, and I tried to change 
Scheduler::FindNextConflict by commenting out the

         if (p->cardid != 0 && p->cardid != q->cardid)
            continue;

         if (p->inputid == q->inputid && p->shareable)
            continue;

lines, so it would treat all programs as conflicting even if they are on 
a different cardid or inputid.

However it didn't work, because it appears that most of the time 
FindNextConflict is called, it only looks for programs schedules on the 
same card, as in

         RecList &cardlist = cardlistmap[q->cardid];
         RecIter k = cardlist.begin();
         if (FindNextConflict(cardlist, q, k))

Am I understanding this right?

If so, why does FindNextConflict have a check for "p->cardid != 
q->cardid" when it is always false?

Would to way around this to ignore the RecIter &j parameter and add a 
loop to check all the cards?

Also, is there a way to prevent mythbackend from changing the channel 
when it starts up? When using a STB it causes all kinds of problems and 
doesn't help anything.

Darwin O'Connor
Toronto, Canada