[mythtv-users] Re: Setting brightness and contrast by card
Ed Clark
eaclark at mchsi.com
Sat May 14 14:42:36 UTC 2005
Hello all,
First, as this is my first time posting to the MythTV community,
thanks for a _great_ program!
Now for my problem.
I've got a single source (cable) that I'm splitting to two tuner
cards that are not the same type (one bt878 and one cx88). I
need to adjust the contrast, hue, etc differently for the two
cards.
I was able to do this by defining two separate "sources" (one per
card), and adjusting the values as needed.
But, when I did this, the channel guide shows each channel twice.
This would make sense if I really had two sources, but I don't.
Likewise, the mythfilldatabase command is doing double the work to
get the same data twice (and putting undo load on the generously
provided zap2it server).
Looking at the Myth database, I see that the contrast, hue, colour,
and brightness values are kept in the "channel" table. My above
"two sources" trick works because this table has a "sourceid"
column which allows me to store the fine tuning of each card
independently based on "source".
But, I believe having multiple sources is cause my "double channel
vision" problem. (Which will soon be a triple vision problem as
I'd like to add a third card.)
Searching this mailing list archive didn't show me a way around the
problem. Is there one?
Would it be possible to add a "cardid" column to the channel table
to allow for a per card? Is it a small amount of work?
If it's small, then if someone could point me to the right file,
then I could attempt it. But I suspect that a database change and
the subsequent data evolution would be a bit much for a MythTV tyro
like myself.
Regards (and thanks again for the great program),
Ed Clark
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