[Libva] [PATCH] i965_device_info: add CBR and VBR rate control flags for vdenc

Sean V Kelley seanvk at posteo.de
Fri Aug 12 17:16:48 UTC 2016


On Fri, 2016-08-12 at 14:20 +0300, Sreerenj wrote:
> 
> 
> On 11.08.2016 19:47, Sean V Kelley wrote:
> > 
> > 
> > On Thu, 2016-08-11 at 14:55 +0300, sreerenj.balachandran at intel.com
> > wrote:
> > > From: Sreerenj Balachandran <sreerenj.balachandran at intel.com>
> > > 
> > > Low power encode through VDENC supports both CBR and VBR.
> > > Make sure vaGetConfigAttribute correctly returns the supported
> > > list of rate control modes in VAEntrypointEncSliceLP entrypoint.
> > 
> > This was intentional.  I'd prefer to delay this until we get the
> > GuC/HuC kernel patches merged.  BRC depends on the HuC firmware...
>  
> IIUC, HuC support is from BXT onwards, right?
> Which means no BRC for SKL VDENC ??

No, it will be supported. SKL support is in flight.

Sean

> 
> > 
> > https://patchwork.freedesktop.org/series/9011/
> > 
> > I'm also trying to get an interface (outside of debugfs) for the
> > driver to detect HuC FW loading
> > status in the  revised/new patch set. We'll be reusing
> > I915_GETPARAM likely.
> > 
> > 
> > Thanks,
> > 
> > Sean
> > 
> > > ---
> > >  src/i965_device_info.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/src/i965_device_info.c b/src/i965_device_info.c
> > > index 47fd50a..a3a1027 100644
> > > --- a/src/i965_device_info.c
> > > +++ b/src/i965_device_info.c
> > > @@ -361,7 +361,7 @@ static struct hw_codec_info skl_hw_codec_info
> > > = {
> > >      .has_hevc_encoding = 1,
> > >      .has_lp_h264_encoding = 1,
> > >  
> > > -    .lp_h264_brc_mode = VA_RC_CQP,
> > > +    .lp_h264_brc_mode = VA_RC_CQP | VA_RC_CBR | VA_RC_VBR,
> > >  
> > >      .num_filters = 5,
> > >      .filters = {
> > 
>  
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