Re: bttv driver bug: VIDIOC_ENUMSTD returns wrong NTSC value
- Date: Fri, 1 Feb 2008 10:51:01 -0800 (PST)
- From: Trent Piepho <xyzzy@xxxxxxxxxxxxx>
- Subject: Re: bttv driver bug: VIDIOC_ENUMSTD returns wrong NTSC value
On Mon, 28 Jan 2008, Daniel [iso-8859-1] Glöckner wrote:
> On Sun, Jan 27, 2008 at 10:37:34AM -0800, Trent Piepho wrote:
> > The bt848 chip does support NTSC-JP, I guess no one has bothered to add it.
>
> It has already been added to bttv as a separate standard. It can't be merged
> with plain NTSC because it needs a different value for the IFORM register.
That's strange, the original poster said:
> > bttv reports NTSC as 36864 0x9000 1001000000000000
> > ( V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR )
He's saying bttv does _not_ report NTSC-JP as a supported standard. Yet
you're right, NTSC-JP is listed along with all the other standards in the
bttv source.
I don't have time to test this. Maybe the original poster was mistaken, or
maybe there is a bug in the code that provides the bitmask?
Having NTSC-M-JP be it's own standard is the correct thing to do, IMHO.
It's having NTSC-M-KR as another standard that's wrong, since there is no
difference in the video signal.
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