[FFmpeg-devel] [PATCH] libavcodec/qsvenc: Add dynamic setting support of low_delay_brc to av1_qsv

[Xiang, Haihao]

On Do, 2023-03-02 at 10:33 +0800, wenbin.chen-at-intel.com at ffmpeg.org wrote:
> From: Wenbin Chen <wenbin.chen at intel.com>
> 
> Signed-off-by: Wenbin Chen <wenbin.chen at intel.com>
> ---
>  doc/encoders.texi   | 2 +-
>  libavcodec/qsvenc.c | 5 ++++-
>  2 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/doc/encoders.texi b/doc/encoders.texi
> index b02737b9df..e9b34010ed 100644
> --- a/doc/encoders.texi
> +++ b/doc/encoders.texi
> @@ -3344,7 +3344,7 @@ Supported in h264_qsv.
>  Change these value to reset qsv codec's max/min qp configuration.
>  
>  @item @var{low_delay_brc}
> -Supported in h264_qsv and hevc_qsv.
> +Supported in h264_qsv, hevc_qsv and av1_qsv.
>  Change this value to reset qsv codec's low_delay_brc configuration.
>  
>  @item @var{framerate}
> diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
> index 3607859cb8..c975302b4f 100644
> --- a/libavcodec/qsvenc.c
> +++ b/libavcodec/qsvenc.c
> @@ -1127,6 +1127,7 @@ static int init_video_param(AVCodecContext *avctx,
> QSVEncContext *q)
>          } else if (avctx->codec_id == AV_CODEC_ID_AV1) {
>              if (q->low_delay_brc >= 0)
>                  q->extco3.LowDelayBRC = q->low_delay_brc ?
> MFX_CODINGOPTION_ON : MFX_CODINGOPTION_OFF;
> +            q->old_low_delay_brc = q->low_delay_brc;
>          }
>  
>          if (avctx->codec_id == AV_CODEC_ID_HEVC) {
> @@ -2213,7 +2214,9 @@ static int update_low_delay_brc(AVCodecContext *avctx,
> QSVEncContext *q)
>  {
>      int updated = 0;
>  
> -    if (avctx->codec_id != AV_CODEC_ID_H264 && avctx->codec_id !=
> AV_CODEC_ID_HEVC)
> +    if (avctx->codec_id != AV_CODEC_ID_H264 &&
> +        avctx->codec_id != AV_CODEC_ID_HEVC &&
> +        avctx->codec_id != AV_CODEC_ID_AV1)
>          return 0;
>  
>      UPDATE_PARAM(q->old_low_delay_brc, q->low_delay_brc);

LGTM, will apply

Thanks
Haihao