[Libva] Deinterlace flags

[Bian, Jonathan]

Yes vaPutSurface() should be called with VA_TOP_FIELD to display the top field and VA_BOTTOM_FIELD to display the bottom field in the surface.

Regards,
Jonathan

-----Original Message-----
From: Malte Sarner [mailto:malte.sarner at multiq.se] 
Sent: Monday, July 19, 2010 3:27 AM
To: Bian, Jonathan
Cc: Libva at lists.freedesktop.org
Subject: Re: [Libva] Deinterlace flags

Hi

Ok, thanks.

Does this mean that mplayer should call vaPutSurface() twice? The first time with VA_TOP_FIELD and the next second with VA_BOTTOM_FIELD? Or is this handled by the backend?

If I understand bob deinterlacing correctly it can be done by doubling the frequency and show the top field every second time and the bottom field every second time. 

Regards, Malte

On Jul 17, 2010, at 5:47 , Bian, Jonathan wrote:

> The VA_TOP_FIELD and VA_BOTTOM_FIELD flags are intended for doing BOB de-interlacing. The top and bottom fields are stored (interleaved) in a single VASurface, and if VA_TOP_FIELD is specified with vaPutSurface(), then the top field in the surface is "bob"ed, and the same is true for the bottom field.
> 
> Regards,
> Jonathan
> 
> -----Original Message-----
> From: libva-bounces+jonathan.bian=intel.com at lists.freedesktop.org [mailto:libva-bounces+jonathan.bian=intel.com at lists.freedesktop.org] On Behalf Of Malte Sarner
> Sent: Wednesday, July 14, 2010 2:19 AM
> To: Libva at lists.freedesktop.org
> Subject: [Libva] Deinterlace flags
> 
> Hi
> 
> I have a problem with saw-tooth edge distortion when playing interlaced coded video with gma500. When reading the mplayer source it looks like the following deinterlace options are available.
> 
>  0: no deinterlacing (default)
>  1: only show first field
>  2: bob deinterlacing
> 
> Bob would be great but it does not look good when I test it. It looks similar to "only show first field" and if I am not wrong the options in mplayer ends up with the following defines in libva.
> 
>  #define VA_FRAME_PICTURE        0x00000000 
>  #define VA_TOP_FIELD            0x00000001
>  #define VA_BOTTOM_FIELD         0x00000002
> 
> So it does not look like it is possible to define bob deinterlace in libva? Is it something that could be added? Also the libva deinterlace options in mplayer looks similar to the vdpau deinterlace options. What happens when vdpau backend is used with libva?
> 
> 
> This might be related to the "New post processing flags" discussion in April.
> 
> Regards, Malte
> 
> 
> Malte Särner
> MultiQ International AB
> Industrigatan 14
> SE-212 14 Malmö, Sweden
> Phone +46 (0)40 14 35 38
> Switch +46 (0)14 35 00
> 
> malte.sarner at multiq.se
> www.multiq.com
> 
> 
> 
> 
> 
> _______________________________________________
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> 



Malte Särner
MultiQ International AB
Industrigatan 14
SE-212 14 Malmö, Sweden
Phone +46 (0)40 14 35 38
Switch +46 (0)14 35 00

malte.sarner at multiq.se
www.multiq.com