[FFmpeg-devel] [PATCH v2] libavutil/hwcontext_{d3d11va, dxva2}: Support Y212/XV36 pixel format

[James Almer]

On 11/4/2024 12:53 AM, fei.w.wang-at-intel.com at ffmpeg.org wrote:
> From: Fei Wang <fei.w.wang at intel.com>
> 
> Use DXGI/D3DFMT 16bit pixel format to compatible with 12bit Y212/XV36
> since there is no 12bit pixel defined in D3D11/D3D9.
> 
> Fix cmdline on Windows:
> 
> $ ffmpeg.exe -hwaccel qsv -init_hw_device qsv:hw,child_device_type=
> {d3d11, dxva2} -i input_12bit.bin -f null -
> 
> Signed-off-by: Fei Wang <fei.w.wang at intel.com>
> ---
> 1. Add the same change to dxva2.
> 
>   libavutil/hwcontext_d3d11va.c | 4 ++++
>   libavutil/hwcontext_dxva2.c   | 4 ++++
>   2 files changed, 8 insertions(+)
> 
> diff --git a/libavutil/hwcontext_d3d11va.c b/libavutil/hwcontext_d3d11va.c
> index 9d81effe5e..1a047ce57b 100644
> --- a/libavutil/hwcontext_d3d11va.c
> +++ b/libavutil/hwcontext_d3d11va.c
> @@ -104,6 +104,10 @@ static const struct {
>       { DXGI_FORMAT_P016,         AV_PIX_FMT_P012 },
>       { DXGI_FORMAT_Y216,         AV_PIX_FMT_Y216 },
>       { DXGI_FORMAT_Y416,         AV_PIX_FMT_XV48 },
> +    // There is no 12bit pixel format defined in DXGI_FORMAT*, use 16bit to compatible
> +    // with 12 bit AV_PIX_FMT* formats.
> +    { 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 },
> diff --git a/libavutil/hwcontext_dxva2.c b/libavutil/hwcontext_dxva2.c
> index b6eb13439d..f697690e19 100644
> --- a/libavutil/hwcontext_dxva2.c
> +++ b/libavutil/hwcontext_dxva2.c
> @@ -95,6 +95,10 @@ static const struct {
>       { MKTAG('P', '0', '1', '6'), AV_PIX_FMT_P012 },
>       { MKTAG('Y', '2', '1', '6'), AV_PIX_FMT_Y216 },
>       { MKTAG('Y', '4', '1', '6'), AV_PIX_FMT_XV48 },
> +    // There is no 12bit pixel format defined in D3DFMT*, use 16bit to compatible
> +    // with 12 bit AV_PIX_FMT* formats.
> +    { MKTAG('Y', '2', '1', '6'), AV_PIX_FMT_Y212 },
> +    { MKTAG('Y', '4', '1', '6'), AV_PIX_FMT_XV36 },
>       { D3DFMT_P8,                 AV_PIX_FMT_PAL8 },
>       { D3DFMT_A8R8G8B8,           AV_PIX_FMT_BGRA },
>   };

Ok.

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