avutil/opt: Avoid division by 0

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago · 52835cb8e1
parent a141948a8b
commit 52835cb8e1
1 changed files with 2 additions and 1 deletions
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@ -85,8 +85,9 @@ static int write_number(void *obj, const AVOption *o, void *dst, double num, int
 {
    if (o->type != AV_OPT_TYPE_FLAGS &&
        (o->max * den < num * intnum || o->min * den > num * intnum)) {
+        num = den ? num*intnum/den : (num*intnum ? INFINITY : NAN);
        av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
-               num*intnum/den, o->name, o->min, o->max);
+               num, o->name, o->min, o->max);
        return AVERROR(ERANGE);
    }
    if (o->type == AV_OPT_TYPE_FLAGS) {