Function ffmpeg::ffi::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