[FFmpeg-devel] [PATCH v3] avfilter/vf_delogo: make the interp value compute method simple

[Paul B Mahol]

probably ok

On 10/8/19, Steven Liu <lq at chinaffmpeg.org> wrote:
> because the interp >= 0UL comparison of an unsigned value is always true
> fix CID: 1454642
>
> Signed-off-by: Steven Liu <lq at chinaffmpeg.org>
> ---
>  libavfilter/vf_delogo.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavfilter/vf_delogo.c b/libavfilter/vf_delogo.c
> index 376c5e850f..a268b3e9b3 100644
> --- a/libavfilter/vf_delogo.c
> +++ b/libavfilter/vf_delogo.c
> @@ -168,7 +168,7 @@ static void apply_delogo(uint8_t *dst, int dst_linesize,
>                   botleft[x-logo_x1-1]  +
>                   botleft[x-logo_x1+1]) * weightb;
>              weight = (weightl + weightr + weightt + weightb) * 3U;
> -            interp = ROUNDED_DIV(interp, weight);
> +            interp = (interp + (weight >> 1)) / weight;
>
>              if (y >= logo_y+band && y < logo_y+logo_h-band &&
>                  x >= logo_x+band && x < logo_x+logo_w-band) {
> --
> 2.15.1
>
>
>
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