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v4l2-close -- Close a V4L2 device
int close(int fd);
File descriptor returned by
Closes the device. Any I/O in progress is terminated and
resources associated with the file descriptor are freed. However data
format parameters, current input or output, control values or other
properties remain unchanged.
The function returns 0 on
success, -1 on failure and the
errno is set appropriately. Possible error
fd is not a valid open file