Function mmal_sys::mmal_buffer_header_mem_unlock

pub unsafe extern "C" fn mmal_buffer_header_mem_unlock(
    header: *mut MMAL_BUFFER_HEADER_T
)

Unlock the data buffer contained in the buffer header. This call does nothing on all platforms except VideoCore where it is needed to un-pin a buffer in memory after any access to it.

@param header buffer header to unlock