extern char *v4l2_norm_to_name(v4l2_std_id id);
extern int v4l2_video_std_construct(struct v4l2_standard *vs,
int id, char *name);
extern char *v4l2_norm_to_name(v4l2_std_id id);
extern int v4l2_video_std_construct(struct v4l2_standard *vs,
int id, char *name);
int (*vidioc_g_chip_ident) (struct file *file, void *fh,
struct v4l2_chip_ident *chip);
int (*vidioc_g_chip_ident) (struct file *file, void *fh,
struct v4l2_chip_ident *chip);