Allow request of specific tuner from EXEC-like interface

[anonymous]

Currently it is not possible to select which tuner is required from EXECTV. I have a situation where I have one analog card and one DVB card. I wanted to be able to request use of the analog card (connected to a set top box), so that I could use the TV on demand features of the box, while being sure that Myth would know the tuner was in use.

To this end, I have implemented a new XML menu keyword: EXECSOURCE. This requires one parameter that corresponds to a cardid in the database, and requests that card in particular from the backend. In all other ways this feature is the same as EXECTV.

I have added a new mythui-style DialogBox to give feedback, not sure if this was the right thing to do as the EXECTV DialogBox was #ifdef 0'ed out.

[robinn <robthebob+mythtv@…>]

Is there any interest in this patch at all? It's quite small to review.

[cpinkham]

(In [21428]) Modify the EXECTV menu action and the corresponding LOCK_TUNER backend command to take an optional cardid. Several people have requested the ability to lock a specific tuner for one reason or another. This patch enables that ability.

To use EXECTV, just insert the cardid after EXECTV before the command to run:

EXECTV 3 /usr/bin/tvtime

The LOCK_TUNER backend command now takes an optional CARDID:

LOCK_TUNER 3

Closes #3422 using my own patch.