v4l2-ioctl.c File Reference

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-event.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#include <media/videobuf2-core.h>

Go to the source code of this file.

Data Structures
struct	std_descr
struct	v4l2_ioctl_info

Macros
#define	CLEAR_AFTER_FIELD(p, field)
#define	prt_names(a, arr)   (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
#define	INFO_FL_PRIO   (1 << 0)
#define	INFO_FL_CTRL   (1 << 1)
#define	INFO_FL_STD   (1 << 2)
#define	INFO_FL_FUNC   (1 << 3)
#define	INFO_FL_QUEUE   (1 << 4)
#define	INFO_FL_CLEAR(v4l2_struct, field)
#define	INFO_FL_CLEAR_MASK   (_IOC_SIZEMASK << 16)
#define	IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags)
#define	IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags)
#define	V4L2_IOCTLS   ARRAY_SIZE(v4l2_ioctls)

Functions
const char *	v4l2_norm_to_name (v4l2_std_id id)
	EXPORT_SYMBOL (v4l2_norm_to_name)
void	v4l2_video_std_frame_period (int id, struct v4l2_fract *frameperiod)
	EXPORT_SYMBOL (v4l2_video_std_frame_period)
int	v4l2_video_std_construct (struct v4l2_standard *vs, int id, const char *name)
	EXPORT_SYMBOL (v4l2_video_std_construct)
	EXPORT_SYMBOL (v4l2_field_names)
	EXPORT_SYMBOL (v4l2_type_names)
bool	v4l2_is_known_ioctl (unsigned int cmd)
struct mutex *	v4l2_ioctl_get_lock (struct video_device *vdev, unsigned cmd)
void	v4l_printk_ioctl (const char *prefix, unsigned int cmd)
	EXPORT_SYMBOL (v4l_printk_ioctl)
long	video_usercopy (struct file *file, unsigned int cmd, unsigned long arg, v4l2_kioctl func)
	EXPORT_SYMBOL (video_usercopy)
long	video_ioctl2 (struct file *file, unsigned int cmd, unsigned long arg)
	EXPORT_SYMBOL (video_ioctl2)

Variables
const char *	v4l2_field_names []
const char *	v4l2_type_names []

Macro Definition Documentation

#define CLEAR_AFTER_FIELD	(		p,
			field
	)

Value:

memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
    0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))

Definition at line 34 of file v4l2-ioctl.c.

#define INFO_FL_CLEAR	(		v4l2_struct,
			field
	)

Value:

((offsetof(struct v4l2_struct, field) +         \
      sizeof(((struct v4l2_struct *)0)->field)) << 16)

Definition at line 1929 of file v4l2-ioctl.c.

#define INFO_FL_CLEAR_MASK   (_IOC_SIZEMASK << 16)

Definition at line 1932 of file v4l2-ioctl.c.

#define INFO_FL_CTRL   (1 << 1)

Definition at line 1921 of file v4l2-ioctl.c.

#define INFO_FL_FUNC   (1 << 3)

Definition at line 1925 of file v4l2-ioctl.c.

#define INFO_FL_PRIO   (1 << 0)

Definition at line 1919 of file v4l2-ioctl.c.

#define INFO_FL_QUEUE   (1 << 4)

Definition at line 1927 of file v4l2-ioctl.c.

#define INFO_FL_STD   (1 << 2)

Definition at line 1923 of file v4l2-ioctl.c.

#define IOCTL_INFO_FNC	(		_ioctl,
			_func,
			_debug,
			_flags
	)

Value:

[_IOC_NR(_ioctl)] = {                       \
        .ioctl = _ioctl,                    \
        .flags = _flags | INFO_FL_FUNC,             \
        .name = #_ioctl,                    \
        .u.func = _func,                    \
        .debug = _debug,                    \
    }

Definition at line 1943 of file v4l2-ioctl.c.

#define IOCTL_INFO_STD	(		_ioctl,
			_vidioc,
			_debug,
			_flags
	)

Value:

[_IOC_NR(_ioctl)] = {                       \
        .ioctl = _ioctl,                    \
        .flags = _flags | INFO_FL_STD,              \
        .name = #_ioctl,                    \
        .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc),   \
        .debug = _debug,                    \
    }

Definition at line 1934 of file v4l2-ioctl.c.

#define prt_names	(		a,
			arr
	)		(((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")

Definition at line 160 of file v4l2-ioctl.c.

#define V4L2_IOCTLS   ARRAY_SIZE(v4l2_ioctls)

Definition at line 2036 of file v4l2-ioctl.c.

Function Documentation

EXPORT_SYMBOL

(

v4l2_norm_to_name

)

EXPORT_SYMBOL

(

v4l2_video_std_frame_period

)

EXPORT_SYMBOL

(

v4l2_video_std_construct

)

EXPORT_SYMBOL

(

v4l2_field_names

)

EXPORT_SYMBOL

(

v4l2_type_names

)

EXPORT_SYMBOL

(

v4l_printk_ioctl

)

EXPORT_SYMBOL

(

video_usercopy

)

EXPORT_SYMBOL

(

video_ioctl2

)

struct mutex* v4l2_ioctl_get_lock ( struct video_device *  vdev, unsigned  cmd  )

read

Definition at line 2045 of file v4l2-ioctl.c.

bool v4l2_is_known_ioctl

(

unsigned int

cmd

)

Definition at line 2038 of file v4l2-ioctl.c.

const char* v4l2_norm_to_name

(

v4l2_std_id

id

)

Definition at line 79 of file v4l2-ioctl.c.

int v4l2_video_std_construct	(	struct v4l2_standard *	vs,
		int	id,
		const char *	name
	)

Definition at line 112 of file v4l2-ioctl.c.

void v4l2_video_std_frame_period	(	int	id,
		struct v4l2_fract *	frameperiod
	)

Definition at line 98 of file v4l2-ioctl.c.

void v4l_printk_ioctl	(	const char *	prefix,
		unsigned int	cmd
	)

Definition at line 2059 of file v4l2-ioctl.c.

long video_ioctl2	(	struct file *	file,
		unsigned int	cmd,
		unsigned long	arg
	)

Definition at line 2357 of file v4l2-ioctl.c.

long video_usercopy	(	struct file *	file,
		unsigned int	cmd,
		unsigned long	arg,
		v4l2_kioctl	func
	)

Definition at line 2250 of file v4l2-ioctl.c.

Variable Documentation

const char* v4l2_field_names[]

Initial value:

= {
    [V4L2_FIELD_ANY]        = "any",
    [V4L2_FIELD_NONE]       = "none",
    [V4L2_FIELD_TOP]        = "top",
    [V4L2_FIELD_BOTTOM]     = "bottom",
    [V4L2_FIELD_INTERLACED] = "interlaced",
    [V4L2_FIELD_SEQ_TB]     = "seq-tb",
    [V4L2_FIELD_SEQ_BT]     = "seq-bt",
    [V4L2_FIELD_ALTERNATE]  = "alternate",
    [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
    [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
}

Definition at line 126 of file v4l2-ioctl.c.

const char* v4l2_type_names[]

Initial value:

= {
    [V4L2_BUF_TYPE_VIDEO_CAPTURE]      = "vid-cap",
    [V4L2_BUF_TYPE_VIDEO_OVERLAY]      = "vid-overlay",
    [V4L2_BUF_TYPE_VIDEO_OUTPUT]       = "vid-out",
    [V4L2_BUF_TYPE_VBI_CAPTURE]        = "vbi-cap",
    [V4L2_BUF_TYPE_VBI_OUTPUT]         = "vbi-out",
    [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
    [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "sliced-vbi-out",
    [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
    [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
    [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
}

Definition at line 140 of file v4l2-ioctl.c.