Function av_opt_next

pub unsafe extern "C" fn av_opt_next(
    obj: *const c_void,
    prev: *const AVOption,
) -> *const AVOption

Iterate over all AVOptions belonging to obj.

@param obj an AVOptions-enabled struct or a double pointer to an AVClass describing it. @param prev result of the previous call to av_opt_next() on this object or NULL @return next AVOption or NULL