Re: [FFmpeg-devel] [PATCH v3 1/3] hwcontext_d3d11va: add mutiple supported DXGI formats

["Wu, Tong1" <tong1.wu-at-intel.com@ffmpeg.org>]

> On 2/13/2023 11:45 PM, Tong Wu wrote:
> > Add support for VUYX, YUYV422, Y210, XV30, P012, Y212, XV36.
> >
> > The added formats work with qsv acceleration and will not have impact
> > on d3d11va acceleration(-hwaccel d3d11va) since so far these formats
> > are still not supported by using d3d11va acceleration.
> >
> > Hwupload and hwdownload can work with the added formats.
> >
> > Signed-off-by: Tong Wu <tong1.wu@intel.com>
> > ---
> >   libavutil/hwcontext_d3d11va.c | 7 +++++++
> >   1 file changed, 7 insertions(+)
> >
> > diff --git a/libavutil/hwcontext_d3d11va.c
> > b/libavutil/hwcontext_d3d11va.c index 363ec6a47d..aa50538d64 100644
> > --- a/libavutil/hwcontext_d3d11va.c
> > +++ b/libavutil/hwcontext_d3d11va.c
> > @@ -89,6 +89,13 @@ static const struct {
> >       { DXGI_FORMAT_B8G8R8A8_UNORM,    AV_PIX_FMT_BGRA },
> >       { DXGI_FORMAT_R10G10B10A2_UNORM, AV_PIX_FMT_X2BGR10 },
> >       { DXGI_FORMAT_R16G16B16A16_FLOAT, AV_PIX_FMT_RGBAF16 },
> > +    { DXGI_FORMAT_AYUV,         AV_PIX_FMT_VUYX },
> 
> Shouldn't this be VUYA?

Please refer to https://learn.microsoft.com/en-us/windows/win32/api/dxgiformat/ne-dxgiformat-dxgi_format

According to the doc, The mapping to the view channel is 
V->R8, 
U->G8, 
Y->B8, 
and A->A8.

It is equivalent to AV_PIX_FMT_VUYX in FFmpeg. Thanks.

> 
> > +    { DXGI_FORMAT_YUY2,         AV_PIX_FMT_YUYV422 },
> > +    { DXGI_FORMAT_Y210,         AV_PIX_FMT_Y210 },
> > +    { DXGI_FORMAT_Y410,         AV_PIX_FMT_XV30 },
> > +    { DXGI_FORMAT_P016,         AV_PIX_FMT_P012 },
> > +    { DXGI_FORMAT_Y216,         AV_PIX_FMT_Y212 },
> > +    { DXGI_FORMAT_Y416,         AV_PIX_FMT_XV36 },
> >       // Special opaque formats. The pix_fmt is merely a place holder, as the
> >       // opaque format cannot be accessed directly.
> >       { DXGI_FORMAT_420_OPAQUE,   AV_PIX_FMT_YUV420P },
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