``length``
Length of the mapped buffer. This must be the same value as given to
:ref:`mmap() <func-mmap>` and returned by the driver in the struct
- :ref:`v4l2_buffer <v4l2-buffer>` ``length`` field for the
+ :c:type:`v4l2_buffer` ``length`` field for the
single-planar API and in the struct
- :ref:`v4l2_plane <v4l2-plane>` ``length`` field for the
+ :c:type:`v4l2_plane` ``length`` field for the
multi-planar API.