[FFmpeg-devel] [PATCH] avfilter/avf_ahistogram: raise minimum acmax to 1

[Paul B Mahol]

On 5/20/16, Michael Niedermayer <michael at niedermayer.cc> wrote:
> If acmax can be 0 then it could result in a division by 0
> Fixes CID1351345

But there is cast to double.

> Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> ---
>  libavfilter/avf_ahistogram.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavfilter/avf_ahistogram.c b/libavfilter/avf_ahistogram.c
> index a716a96..ff94ad4 100644
> --- a/libavfilter/avf_ahistogram.c
> +++ b/libavfilter/avf_ahistogram.c
> @@ -165,7 +165,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame
> *in)
>      const int H = s->histogram_h;
>      const int w = s->w;
>      int c, y, n, p, bin;
> -    uint64_t acmax = 0;
> +    uint64_t acmax = 1;
>
>      if (!s->out || s->out->width  != outlink->w ||
>                     s->out->height != outlink->h) {
> --
> 1.7.9.5
>
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