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Re: WSS reloaded
by Nicolas Boullis
::
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Hi,
On Thu, Apr 24, 2008 at 12:10:59AM +0200, Nicolas Boullis wrote:
> Hi,
>
> I've tried to implement some support for WSS in my "em8300-scale-n-crop"
> repository.
> I tried it with no success, but I guess my good old 4:3 CRT TV set does
> not support WSS...
>
> Could anyone with the corresponding hardware give it a try?
>
> To give it a try, clone my
> http://freehg.org/u/nboullis/em8300-scale-n-crop/ repository, build the
> modules and load them. (Ensure that the good adv717x module gets
> loaded.)
>
> Then echo the desired WSS value (14-bit, 7 for 16:9, 8 for full 4:3) to
> /sys/class/em8300/em8300-0/device/encoder/wss . Any negative value will
> disable WSS.
>
> Note that it will trigger the flickering Ville mentionned. I have some
> idea how to fix it, but I'd rather first be sure that it works as is.
Here is some news.
Ville Salmela kindly reported that it works fine for him, but that, as
expected, the flickering is still present.
Hence, I just applied the planned patch that avoids needlessly resetting
the ADV717x chip.
As far as I am concerned (my TV set does not understand WSS), the
flickering is gone with this patch. But I need someone to confirm that
the WSS still works.
As usual, all comments are welcome.
If everything works fine, I'm willing to implement some callback so the
kernel tells a userspace application when the aspect ratio changes, and
the userspace application decides to change the TV aspect ration, do
some cropping and/or sets up WSS.
Cheers,
Nicolas
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On Thu, Apr 24, 2008 at 12:10:59AM +0200, Nicolas Boullis wrote:
> Hi,
>
> I've tried to implement some support for WSS in my "em8300-scale-n-crop"
> repository.
> I tried it with no success, but I guess my good old 4:3 CRT TV set does
> not support WSS...
>
> Could anyone with the corresponding hardware give it a try?
>
> To give it a try, clone my
> http://freehg.org/u/nboullis/em8300-scale-n-crop/ repository, build the
> modules and load them. (Ensure that the good adv717x module gets
> loaded.)
>
> Then echo the desired WSS value (14-bit, 7 for 16:9, 8 for full 4:3) to
> /sys/class/em8300/em8300-0/device/encoder/wss . Any negative value will
> disable WSS.
>
> Note that it will trigger the flickering Ville mentionned. I have some
> idea how to fix it, but I'd rather first be sure that it works as is.
Here is some news.
Ville Salmela kindly reported that it works fine for him, but that, as
expected, the flickering is still present.
Hence, I just applied the planned patch that avoids needlessly resetting
the ADV717x chip.
As far as I am concerned (my TV set does not understand WSS), the
flickering is gone with this patch. But I need someone to confirm that
the WSS still works.
As usual, all comments are welcome.
If everything works fine, I'm willing to implement some callback so the
kernel tells a userspace application when the aspect ratio changes, and
the userspace application decides to change the TV aspect ration, do
some cropping and/or sets up WSS.
Cheers,
Nicolas
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Dxr3-devel mailing list
Dxr3-devel@...
https://lists.sourceforge.net/lists/listinfo/dxr3-devel
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