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AVOptions: don't return an invalid option when option list is empty

This commit is contained in:
Anton Khirnov 2011-11-10 09:19:09 +01:00
parent 45fcb86cf8
commit e1e22851c1
1 changed files with 4 additions and 3 deletions
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7
libavutil/opt.c
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@ -56,9 +56,10 @@ const AVOption *av_next_option(void *obj, const AVOption *last)
const AVOption *av_opt_next(void *obj, const AVOption *last)
{
if (last && last[1].name) return ++last;
else if (last) return NULL;
else return (*(AVClass**)obj)->option;
AVClass *class = *(AVClass**)obj;
if (!last && class->option[0].name) return class->option;
if (last && last[1].name) return ++last;
return NULL;
}
static int read_number(const AVOption *o, void *dst, double *num, int *den, int64_t *intnum)