Function rsmpeg::ffi::av_opt_eval_flags

pub unsafe extern "C" fn av_opt_eval_flags(
    obj: *mut c_void, 
    o: *const AVOption, 
    val: *const i8, 
    flags_out: *mut i32
) -> i32

@defgroup opt_eval_funcs Evaluating option strings @{ This group of functions can be used to evaluate option strings and get numbers out of them. They do the same thing as av_opt_set(), except the result is written into the caller-supplied pointer.

@param obj a struct whose first element is a pointer to AVClass. @param o an option for which the string is to be evaluated. @param val string to be evaluated. @param *_out value of the string will be written here.

@return 0 on success, a negative number on failure.