[mythtv] Re-using tuners

[Ed W]

Daniel Kristjansson wrote:
> On Mon, 2006-08-28 at 00:57 +0100, Martin Long wrote:
>   
>> 1) Reusing a tuner that is already recoding a program, when that
>> 2) (DBV) I'm sure this has been looked at before, but my Humax box is
>>     
>
>   
>> Obviously I realise people are busy, so I'm really just trying to find a
>> starting point. I've started to find my way around the source, but it's
>> quite difficult without any docs.
>>     
>
> Search the list.. These ideas have been discussed many times.
>   

I think you want to start looking in the DvbRecorder classes for the 
specific recording (and tuning) code that you are after.  It's a bit 
hard to follow the flow of the code sometimes because there is some use 
of class inheritance which can be tricky to debug through.  The next 
class up I believe is NuppelVideoRecorder. 

I very briefly probed the code on this and wondered if the answer might 
not be to add a reference to the desired channel to be tuned into the 
call which requests a free tuner...  This would mean that as you say it 
can give back a tuner in use if it can actually be used for the 
requested channel.  Means also then that you have to re-request a free 
tuner each time you change channel, but the idea seems somewhat workable

It's been a long time since I looked at this code though, so perhaps 
Daniel is now one of the best people to ask any technical questions on this.

Happy hunting

Ed W