[FFmpeg-devel] [PATCH 4/4] avfilter/vf_geq: fix interpolation with 1 pixel width/height

[Michael Niedermayer]

On Thu, May 09, 2024 at 08:49:18AM +0200, Marton Balint wrote:
> Fixes ticket #9740.
> 
> Signed-off-by: Marton Balint <cus at passwd.hu>
> ---
>  libavfilter/vf_geq.c | 20 ++++++++++++--------
>  1 file changed, 12 insertions(+), 8 deletions(-)
> 
> diff --git a/libavfilter/vf_geq.c b/libavfilter/vf_geq.c
> index dbe50e5250..12604d44a2 100644
> --- a/libavfilter/vf_geq.c
> +++ b/libavfilter/vf_geq.c
> @@ -112,8 +112,12 @@ static inline double getpix(void *priv, double x, double y, int plane)
>          return 0;
>  
>      if (geq->interpolation == INTERP_BILINEAR) {
> -        xi = x = av_clipd(x, 0, w - 2);
> -        yi = y = av_clipd(y, 0, h - 2);
> +        int xn, yn;
> +
> +        xi = x = av_clipd(x, 0, w - 1);
> +        yi = y = av_clipd(y, 0, h - 1);
> +        xn = av_clip(xi + 1, 0, w - 1);
> +        yn = av_clip(yi + 1, 0, h - 1);

xi + 1 should not need cliping, a FFMIN() should be enough

thx

[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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