Release 4.17 include/uapi/linux/uvcvideo.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef __LINUX_UVCVIDEO_H_

#define __LINUX_UVCVIDEO_H_

#include <linux/ioctl.h>
#include <linux/types.h>

/*
 * Dynamic controls
 */

/* Data types for UVC control data */

#define UVC_CTRL_DATA_TYPE_RAW		0

#define UVC_CTRL_DATA_TYPE_SIGNED	1

#define UVC_CTRL_DATA_TYPE_UNSIGNED	2

#define UVC_CTRL_DATA_TYPE_BOOLEAN	3

#define UVC_CTRL_DATA_TYPE_ENUM		4

#define UVC_CTRL_DATA_TYPE_BITMASK	5

/* Control flags */

#define UVC_CTRL_FLAG_SET_CUR		(1 << 0)

#define UVC_CTRL_FLAG_GET_CUR		(1 << 1)

#define UVC_CTRL_FLAG_GET_MIN		(1 << 2)

#define UVC_CTRL_FLAG_GET_MAX		(1 << 3)

#define UVC_CTRL_FLAG_GET_RES		(1 << 4)

#define UVC_CTRL_FLAG_GET_DEF		(1 << 5)
/* Control should be saved at suspend and restored at resume. */

#define UVC_CTRL_FLAG_RESTORE		(1 << 6)
/* Control can be updated by the camera. */

#define UVC_CTRL_FLAG_AUTO_UPDATE	(1 << 7)


#define UVC_CTRL_FLAG_GET_RANGE \
	(UVC_CTRL_FLAG_GET_CUR | UVC_CTRL_FLAG_GET_MIN | \
         UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES | \
         UVC_CTRL_FLAG_GET_DEF)


struct uvc_menu_info {
	
__u32 value;
	
__u8 name[32];
};


struct uvc_xu_control_mapping {
	
__u32 id;
	
__u8 name[32];
	
__u8 entity[16];
	
__u8 selector;

	
__u8 size;
	
__u8 offset;
	
__u32 v4l2_type;
	
__u32 data_type;

	
struct uvc_menu_info __user *menu_info;
	
__u32 menu_count;

	
__u32 reserved[4];
};


struct uvc_xu_control_query {
	
__u8 unit;
	
__u8 selector;
	
__u8 query;		/* Video Class-Specific Request Code, */
				/* defined in linux/usb/video.h A.8.  */
	
__u16 size;
	
__u8 __user *data;
};


#define UVCIOC_CTRL_MAP		_IOWR('u', 0x20, struct uvc_xu_control_mapping)

#define UVCIOC_CTRL_QUERY	_IOWR('u', 0x21, struct uvc_xu_control_query)

/*
 * Metadata node
 */

/**
 * struct uvc_meta_buf - metadata buffer building block
 * @ns          - system timestamp of the payload in nanoseconds
 * @sof         - USB Frame Number
 * @length      - length of the payload header
 * @flags       - payload header flags
 * @buf         - optional device-specific header data
 *
 * UVC metadata nodes fill buffers with possibly multiple instances of this
 * struct. The first two fields are added by the driver, they can be used for
 * clock synchronisation. The rest is an exact copy of a UVC payload header.
 * Only complete objects with complete buffers are included. Therefore it's
 * always sizeof(meta->ts) + sizeof(meta->sof) + meta->length bytes large.
 */

struct uvc_meta_buf {
	
__u64 ns;
	
__u16 sof;
	
__u8 length;
	
__u8 flags;
	
__u8 buf[];

} __packed;

#endif
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Directory: include/uapi/linux

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