[FFmpeg-devel] [PATCH, v2 1/2] lavc/qsvdec: add decode support for HEVC 4:2:2 8-bit and 10-bit

[Max Dmitrichenko]

On Fri, May 15, 2020 at 9:06 AM Fu, Linjie <linjie.fu at intel.com> wrote:

> > From: ffmpeg-devel <ffmpeg-devel-bounces at ffmpeg.org> On Behalf Of
> > Artem Galin
> > Sent: Tuesday, April 28, 2020 00:26
> > To: FFmpeg development discussions and patches <ffmpeg-
> > devel at ffmpeg.org>
> > Cc: Zhong Li <lizhong1008 at gmail.com>
> > Subject: Re: [FFmpeg-devel] [PATCH, v2 1/2] lavc/qsvdec: add decode
> > support for HEVC 4:2:2 8-bit and 10-bit
> >
> > On Wed, 15 Apr 2020 at 05:02, Fu, Linjie <linjie.fu at intel.com> wrote:
> >
> > > > From: Zhong Li <lizhong1008 at gmail.com>
> > > > Sent: Wednesday, April 15, 2020 09:58
> > > > To: FFmpeg development discussions and patches <ffmpeg-
> > > > devel at ffmpeg.org>
> > > > Cc: Fu, Linjie <linjie.fu at intel.com>
> > > > Subject: Re: [FFmpeg-devel] [PATCH, v2 1/2] lavc/qsvdec: add decode
> > > > support for HEVC 4:2:2 8-bit and 10-bit
> > > >
> > > > Linjie Fu <linjie.fu at intel.com> 于2020年2月26日周三 下午4:43写道：
> > > > >
> > > > > Enables HEVC Range Extension decoding support (Linux) for 4:2:2
> 8/10
> > > bit
> > > > > on ICL+ (gen11 +) platform.
> > > > >
> > > > > Signed-off-by: Linjie Fu <linjie.fu at intel.com>
> > > > > ---
> > > > > [v2]: restrict to support on Linux.
> > > > >
> > > > >  libavcodec/qsv.c          | 16 ++++++++++++++++
> > > > >  libavutil/hwcontext_qsv.c | 24 ++++++++++++++++++++++++
> > > > >  2 files changed, 40 insertions(+)
> > > > >
> > > > > diff --git a/libavcodec/qsv.c b/libavcodec/qsv.c
> > > > > index db98c75..171a8d6 100644
> > > > > --- a/libavcodec/qsv.c
> > > > > +++ b/libavcodec/qsv.c
> > > > > @@ -195,6 +195,12 @@ enum AVPixelFormat
> > ff_qsv_map_fourcc(uint32_t
> > > > fourcc)
> > > > >      case MFX_FOURCC_NV12: return AV_PIX_FMT_NV12;
> > > > >      case MFX_FOURCC_P010: return AV_PIX_FMT_P010;
> > > > >      case MFX_FOURCC_P8:   return AV_PIX_FMT_PAL8;
> > > > > +#if CONFIG_VAAPI
> > >
> > LGTM. CONFIG_VAAPI is not needed here because crash does not related to
> > these changes.
> > Full support MFX_FOURCC_YUY2 is WIP for Windows.
> >
> > > > > +    case MFX_FOURCC_YUY2: return AV_PIX_FMT_YUYV422;
> > > >
> > > > There is no VAAPI structures here, so should not use CONFIG_VAAPI to
> > > > disable them.
> > > >
> > >
> > > This is pointed out in [1] that D3D code doesn't support YUYV format,
> and
> > > indeed
> > > It leads to unexpected crash in windows.(instead of working or
> reporting
> > > unsupported
> > > On ICL- platform)
> > >
> > > Hence this patch restricted to add support on linux only.
> > >
> > > And I admit the best solution should be get this fully supported on
> both
> > > linux and windows.
> > > (I believe Max and Artem is helping on windows side)
> > >
> > > Thanks for the review,
> > > Linjie
> > >
> > > [1]
> > > https://patchwork.ffmpeg.org/project/ffmpeg/patch/1582596080-1035-1-
> > git-send-email-linjie.fu at intel.com/
>
> Synced with Zhong, will keep the restriction for now and apply this set
> soon. (if no objections)
>
>
it make sense, as patch is clearly Linux focused



> - Linjie
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regards
Max