Function rsmpeg::ffi::avcodec_default_execute2

pub unsafe extern "C" fn avcodec_default_execute2(
    c: *mut AVCodecContext, 
    func: Option<unsafe extern "C" fn(*mut AVCodecContext, *mut c_void, i32, i32) -> i32>, 
    arg: *mut c_void, 
    ret: *mut i32, 
    count: i32
) -> i32