The camera3_stream_buffer_t instances part of a capture request contain information on the stream for which capture has been requested (size, format and fences) and a handle to the stream's memory buffers. This information is copied in the descriptor one piece at the time while processing the camera3 streams to be re-used at request completion time. Simplify the code by copying the stream information in the descriptor at construction time. Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>