[mythtv] Channel list in Program Guide

[David Engel]

On Sat, Jul 13, 2019 at 10:56:31PM +0200, Klaas de Waal wrote:
> The Program Guide displayed by mythfrontend shows all channels in the
> database. This includes the channels from videosources that are not
> connected to a capturecard and thus can never be tuned to or recorded
> from.
> 
> I think this is wrong; the Program Guide should only show channels
> that can be used, so only channels from videosources that are
> connected to a capturecard.
> 
> This can be easily implemented by a fix in
> ChannelUtil::LoadChannels(), file channelutil.cpp:2396, change "LEFT
> JOIN capturecard..." with "RIGHT JOIN capturecard ..." .

Why not plain, INNER JOIN instead?

> For mythtv-setup and mythfrontend this works OK but would it break
> anything else, e.g. the services API or so?

I don't know.  It should certainly only be done for guide and related
queries.  Queries dealing with recorded and oldrecorded most
definitely need to referenced channels that might not still be
connected to inputs.

David
-- 
David Engel
david at istwok.net