#include <libexplain/string_buffer.h>

Enumerations
enum	explain_v4l2_control_id_check_t { explain_v4l2_control_id_check_no_idea, explain_v4l2_control_id_check_nosuch, explain_v4l2_control_id_check_notsup, explain_v4l2_control_id_check_ok }
Functions
void	explain_buffer_v4l2_control_id (explain_string_buffer_t *sb, int data)
enum explain_v4l2_control_id_check_t	explain_v4l2_control_id_check (int fildes, int data)

Enumeration Type Documentation

Enumerator:

explain_v4l2_control_id_check_no_idea
explain_v4l2_control_id_check_nosuch
explain_v4l2_control_id_check_notsup
explain_v4l2_control_id_check_ok

Definition at line 35 of file v4l2_control_id.h.

Function Documentation

void explain_buffer_v4l2_control_id	(	explain_string_buffer_t *	sb,
		int	data
	)

The explain_buffer_v4l2_control_id function may be used to print a representation of a v4l2_control_id structure.

Parameters:

sb	The string buffer to print into.
data	The v4l2 control id value to be printed.

enum explain_v4l2_control_id_check_t explain_v4l2_control_id_check	(	int	fildes,
		int	data
	)

The explain_v4l2_control_id_check function is used to check a control id.

Parameters:

fildes	The associated file descriptor
data	The control id value to be checked.

Returns:: no_idea if the file descriptor is unhelpful or the pointer is efault, nosuch if there is no such control id, notsup if the control id exists, but is not supported by the device, ok if nothing wrong could be found.