Only pointers to buffers (planes) are exchanged, the data itself is not
copied. These pointers, together with meta-information like timestamps
or field parity, are stored in a struct :c:type:`struct v4l2_buffer`,
Only pointers to buffers (planes) are exchanged, the data itself is not
copied. These pointers, together with meta-information like timestamps
or field parity, are stored in a struct :c:type:`struct v4l2_buffer`,