[mythtv] DVB Development

[Kenneth Aafløy]

On Monday 24 May 2004 19:58, Anders Hanson wrote:
> Is there any plan on forwarding the CAM menu to the frontend soo that
> the user can interactivly choose
> what to do if  a 'no right' menu is displayed.  The most annoying thing
> with mythtv right now is that sometimes
> I get a 'no right' menu from the CAM that is repeatingly showing up
> until another channel is tuned (actually the last
> channel that worked).
>
> If anyone can guide me to the rigth lines of code to implement this then
> I can try to make a patch that adds this if
> no one else is working on this already.

I've already shown how to get the menu in dvbcam.cpp, so all you have to do is 
make a new backend call from a frontend requesting whether the backend has 
anything to add to the frontend menu. Then connect this to the cam code, so 
it can generate something when the user views the menu. I guess the hard part 
is figuring out an easy way of conveing a menuset across the network.

About your specific request about the cam informational message, it would 
require another protocoll message, but this time from the backend to the 
frontend. MythEvent was made for this, but it provides no return path (ie if 
the cam asks a question) so that has to be handled elsewhere.

You should have a look in libs/libmyth/mythcontext.h/cpp and the MythEvent 
class.

The mythtv protocol is spread all over:
	- programs/mythbackend/mainserver.cpp/h
		- programs/mythbackend/encoderlink.cpp/h
		- programs/mythbackend/filetransfer.cpp/h
	- libs/libmyth/remotefile.cpp/h
	- libs/libmythtv/remoteencoder.cpp/h
	- libs/libmythtv/remoteutil.cpp/h

That's what I found now, but there is also protocol calls throughout the 
MythTV source tree, but these are good starting points for disecting the 
protocol.

-- 
Kenneth