cdc2620549
The V4L2 requests API provides support to atomically tie controls to a set of buffers. This is especially common for m2m devices. Such a request is represented by an fd that is allocated via MEDIA_IOC_REQUEST_ALLOC and then passed to the various V4L2 functions. Implement a V4L2Request class to wrap such an fd and add the corresponding utility functions. Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>