Function ffmpeg_sys_next::avcodec_default_execute

pub unsafe extern "C" fn avcodec_default_execute(
    c: *mut AVCodecContext, 
    func: Option<unsafe extern "C" fn(c2: *mut AVCodecContext, arg2: *mut c_void) -> c_int>, 
    arg: *mut c_void, 
    ret: *mut c_int, 
    count: c_int, 
    size: c_int
) -> c_int