[FFmpeg-devel] [PATCH] configure: include pkgconfig path as vaapi header search

[Song, Ruiling]

> > >
> > > Neo is the successor to Beignet, correct?
> > Yes, that's the truth.
> > Currently we simply checking against the specific header file of OpenCL,
> > which is in-fact not accurate.
> > I am not sure whether you would like to use Neo together with
> > intel-media-driver, which is the most targeted opencl usage in FFmpeg.
> > If that's the case, I think it may be hard to find a matching
> > intel-media-driver to work with Neo release package.
> > Because Neo release version depends on a very outdated libva revision.
> > I just sent a patch to Neo to update libva revision dependency. Once they
> > accept the patch and new Neo release package comes out,
> > I think we can change to check against Neo package. People would not need
> > to build Neo themselves then.
> >
> > Thanks!
> > Ruiling
> > >
> > > Enabling similar functionality for Neo should allow for the same feature
> > > support for these not using Beignet.
> >
> >
> Indeed, I'd want to use Neo + intel-media-driver.
> Judging by the (relatively low) development activity on Beignet of late,
> its' considered ready to deprecate in place of Neo, applicable on anything
> newer than Kabylake.
I think Mark don't have plan to deprecate Beignet now, and me too.
FFmpeg-OpenCL currently use direct buffer sharing between OpenCL and vaapi driver.
One obvious limitation I didn't notice before is 10bit or 12bit buffer sharing is not supported by Neo.
I pinged the author of cl_intel_va_api_media_sharing, but got no response.
Maybe I will take some effort to update the extension spec and implement them in Neo myself.
I am not sure any other Neo limitation that Mark wants to add?

> Let's see how long it takes for the libva revision to be bumped up Neo.
> Here's the request for the version bump:
> https://github.com/intel/compute-runtime/issues/131
> And the PR, for these following along:
> https://github.com/intel/compute-runtime/pull/151
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