Ping for the 2nd time. Thanks.
> -----Original Message-----
> From: Wang, Fei W
> Sent: Friday, November 22, 2019 1:45 PM
> To: FFmpeg development discussions and patches <ffmpeg-
> de...@ffmpeg.org>; myp...@gmail.com
> Subject: RE: [FFmpeg-devel] [PATCH v1] avcodec/vaapi: set more flags for
> VASurfaceAttrib
>
> Ping, any other comments of this patch? Thanks.
>
> > -----Original Message-----
> > From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of
> > Wang, Fei W
> > Sent: Wednesday, November 20, 2019 10:40 AM
> > To: myp...@gmail.com; FFmpeg development discussions and patches
> > <ffmpeg-devel@ffmpeg.org>
> > Subject: Re: [FFmpeg-devel] [PATCH v1] avcodec/vaapi: set more flags
> > for VASurfaceAttrib
> >
> >
> > > On Tue, Nov 19, 2019 at 4:24 PM Wangfei <fei.w.w...@intel.com> wrote:
> > > >
> > > > flags and value.type is needed when pass VASurfaceAttrib to driver.
> > > > Otherwise the attribute will be considered invalid in driver.
> > > >
> > > > Signed-off-by: Wangfei <fei.w.w...@intel.com>
> > > > ---
> > > > libavcodec/vaapi_decode.c | 2 ++
> > > > 1 file changed, 2 insertions(+)
> > > >
> > > > diff --git a/libavcodec/vaapi_decode.c b/libavcodec/vaapi_decode.c
> > > > index 69512e1d45..a93aba5a5d 100644
> > > > --- a/libavcodec/vaapi_decode.c
> > > > +++ b/libavcodec/vaapi_decode.c
> > > > @@ -350,6 +350,8 @@ static int
> > > > vaapi_decode_find_best_format(AVCodecContext *avctx,
> > > >
> > > > ctx->pixel_format_attribute = (VASurfaceAttrib) {
> > > > .type = VASurfaceAttribPixelFormat,
> > > > + .flags = VA_SURFACE_ATTRIB_SETTABLE,
> > > > + .value.type = VAGenericValueTypeInteger,
> > > I can't found any description in libva about this part, do you have
> > > any other docs?
> > I checked the logic of vaCreateSurfaces implementation in
> > media-driver, it will check flags and value.type in VASurfaceAttrib
> > when using it. If leaks of the info, it will consider the attribute is
> > invalid or assert(in this case, flags checked first, so no assert
> > occurred.):
> > https://github.com/intel/media-
> >
> driver/blob/8a8b8ae263a04cb5dd384d4625215cf296d2cc59/media_driver/li
> > nux/common/ddi/media_libva.cpp#L2149
> >
> > On the other hand, there is another place in ffmpeg-vaapi that sets
> > VASurfaceAttrib, and it filled flags and value.type:
> >
> https://github.com/FFmpeg/FFmpeg/blob/d73f06270600c37c74beeceac37f5
> > 93838ced383/libavutil/hwcontext_vaapi.c#L527
> > So I believe here we need do the same thing.
> >
> > > > .value.value.i = best_fourcc,
> > > > };
> > > >
> > > > --
> > > > 2.17.1
> > > >
> > _______________________________________________
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> >
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