pub unsafe extern "C" fn CMBufferQueueSetValidationCallback(
queue: CMBufferQueueRef,
callback: CMBufferValidationCallback,
refcon: *mut c_void,
) -> OSStatuspub unsafe extern "C" fn CMBufferQueueSetValidationCallback(
queue: CMBufferQueueRef,
callback: CMBufferValidationCallback,
refcon: *mut c_void,
) -> OSStatus