v4l2_buffer Struct Reference

Parameter of ioctl(VIDIOC_QBUF) and ioctl(VIDIOC_DQBUF).
Currently, support only index, type, bytesused, memory, m.userptr, and length. More...

#include <video.h>

Collaboration diagram for v4l2_buffer:

Public Attributes
uint16_t	index
uint16_t	type
uint32_t	bytesused
uint16_t	flags
uint16_t	field
struct timeval	timestamp
struct v4l2_timecode	timecode
uint16_t	sequence
uint16_t	memory
union {
uint32_t   offset
unsigned long   userptr
struct v4l2_plane *   planes
int   fd
}	m
uint32_t	length

Detailed Description

Parameter of ioctl(VIDIOC_QBUF) and ioctl(VIDIOC_DQBUF).
Currently, support only index, type, bytesused, memory, m.userptr, and length.

Member Data Documentation

index

uint16_t index

Buffer id

type

uint16_t type

enum v4l2_buf_type

bytesused

uint32_t bytesused

Driver sets the image size

flags

uint16_t flags

Buffer flags.

field

uint16_t field

The field order of the image

timestamp

struct timeval timestamp

Frame timestamp

timecode

struct v4l2_timecode timecode

Frame timecode

sequence

uint16_t sequence

Frame sequence number

memory

uint16_t memory

enum v4l2_memory

userptr

unsigned long userptr

Address of buffer

length

uint32_t length

User set the buffer size

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The documentation for this struct was generated from the following file:

• spresense/nuttx/include/nuttx/video/video.h