[FFmpeg-devel] [PATCH v2] avcodec: add D3D12VA hardware accelerated H264, HEVC, VP9, and AV1 decoding

[Wu Jianhua]

> From: Hendrik Leppkes<mailto:h.leppkes at gmail.com>
> Sent: 2023年3月1日 23:55
> To: FFmpeg development discussions and patches<mailto:ffmpeg-devel at ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH v2] avcodec: add D3D12VA hardware accelerated H264, HEVC, VP9, and AV1 decoding
>
> On Fri, Dec 23, 2022 at 7:01 PM Wu Jianhua <toqsxw at outlook.com> wrote:
>>
>> [PATCH v2] avcodec: add D3D12VA hardware accelerated H264, HEVC, VP9, and AV1 decoding
>>
>> Patches attached.
>>
>
> The naming scheme on this seems to be rather inconsistent. Both
> "d3d12dec" and "d3d12va" seem to be used in different places - please
> standardize it all on "d3d12va", it matches d3d11va and remains
> consistent with itself.

Hi Hendrik,

The d3d12 supports video encoding that d3d11 does not, so I cannot use
d3d12va_h264 just like d3d11va_h264. I think to reserve d3d12enc_h264/hevc/vp9/av1
for d3d12 video encoding and use d3d12dec_h264/hevc/vp9/av1 for d3d12 video
decoding now. If we want to use the d3d12va naming scheme, we might have
to use some name like d3d12va_dec_h264 to distinguish decoder and encoder.
What do you think?

>
> Additionally, why are you not supporting all codecs that D3D11
> supports? Are there any limitations on what it supports, for some
> reason?
>

Actually, I have all D3D12 codecs implemented on my local repository.
The reason is fairly simple, I got some issues but I don't have much free
time to fix them recently. Maybe I can send another patch set for them
in the future.

Thanks,
Jianhua

>- Hendrik
>