[FFmpeg-devel] [PATCH] av1dec: Fix RefFrameSignBias calculation

[Lynne]

Apr 22, 2024, 22:31 by sw at jkqxz.net:

> ---
> Actually match the specification.  (Though I'm guessing this field isn't actually used if things pass anyway?)
>
>  libavcodec/av1dec.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/libavcodec/av1dec.c b/libavcodec/av1dec.c
> index 69da08b686..79a30a114d 100644
> --- a/libavcodec/av1dec.c
> +++ b/libavcodec/av1dec.c
> @@ -373,8 +373,13 @@ static void order_hint_info(AV1DecContext *s)
>  int ref_order_hint = s->ref[ref_slot].order_hint;
>
>  frame->order_hints[ref_name] = ref_order_hint;
> -        frame->ref_frame_sign_bias[ref_name] =
> -            get_relative_dist(seq, ref_order_hint, frame->order_hint);
> +        if (!seq->enable_order_hint) {
> +            frame->ref_frame_sign_bias[ref_name] = 0;
> +        } else {
> +            frame->ref_frame_sign_bias[ref_name] =
> +                get_relative_dist(seq, ref_order_hint,
> +                                  frame->order_hint) > 0;
> +        }
>  }
>  }
>

LGTM