v4l2-munmap — Unmap device memory
#include <unistd.h> #include <sys/mman.h>
Address of the mapped buffer as returned by the
Length of the mapped buffer. This must be the same
value as given to
mmap() and returned by the
driver in the struct v4l2_buffer
field for the single-planar API and in the struct v4l2_plane
length field for the multi-planar API.
Unmaps a previously with the
mmap() function mapped
buffer and frees it, if possible.