7.65. V4L2 munmap()¶
v4l2-munmap - Unmap device memory
- Address of the mapped buffer as returned by the mmap() function.
- Length of the mapped buffer. This must be the same value as given to
mmap() and returned by the driver in the struct
lengthfield for the single-planar API and in the struct
lengthfield for the multi-planar API.
Unmaps a previously with the mmap() function mapped buffer and frees it, if possible.