linux-headers (unknown)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef __LINUX_UVCVIDEO_H_
3 #define __LINUX_UVCVIDEO_H_
4
5 #include <linux/ioctl.h>
6 #include <linux/types.h>
7
8 /*
9 * Dynamic controls
10 */
11
12 /* Data types for UVC control data */
13 #define UVC_CTRL_DATA_TYPE_RAW 0
14 #define UVC_CTRL_DATA_TYPE_SIGNED 1
15 #define UVC_CTRL_DATA_TYPE_UNSIGNED 2
16 #define UVC_CTRL_DATA_TYPE_BOOLEAN 3
17 #define UVC_CTRL_DATA_TYPE_ENUM 4
18 #define UVC_CTRL_DATA_TYPE_BITMASK 5
19
20 /* Control flags */
21 #define UVC_CTRL_FLAG_SET_CUR (1 << 0)
22 #define UVC_CTRL_FLAG_GET_CUR (1 << 1)
23 #define UVC_CTRL_FLAG_GET_MIN (1 << 2)
24 #define UVC_CTRL_FLAG_GET_MAX (1 << 3)
25 #define UVC_CTRL_FLAG_GET_RES (1 << 4)
26 #define UVC_CTRL_FLAG_GET_DEF (1 << 5)
27 /* Control should be saved at suspend and restored at resume. */
28 #define UVC_CTRL_FLAG_RESTORE (1 << 6)
29 /* Control can be updated by the camera. */
30 #define UVC_CTRL_FLAG_AUTO_UPDATE (1 << 7)
31 /* Control supports asynchronous reporting */
32 #define UVC_CTRL_FLAG_ASYNCHRONOUS (1 << 8)
33
34 #define UVC_CTRL_FLAG_GET_RANGE \
35 (UVC_CTRL_FLAG_GET_CUR | UVC_CTRL_FLAG_GET_MIN | \
36 UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES | \
37 UVC_CTRL_FLAG_GET_DEF)
38
39 #define UVC_MENU_NAME_LEN 32
40
41 struct uvc_menu_info {
42 __u32 value;
43 __u8 name[UVC_MENU_NAME_LEN];
44 };
45
46 struct uvc_xu_control_mapping {
47 __u32 id;
48 __u8 name[32];
49 __u8 entity[16];
50 __u8 selector;
51
52 __u8 size;
53 __u8 offset;
54 __u32 v4l2_type;
55 __u32 data_type;
56
57 struct uvc_menu_info *menu_info;
58 __u32 menu_count;
59
60 __u32 reserved[4];
61 };
62
63 struct uvc_xu_control_query {
64 __u8 unit;
65 __u8 selector;
66 __u8 query; /* Video Class-Specific Request Code, */
67 /* defined in linux/usb/video.h A.8. */
68 __u16 size;
69 __u8 *data;
70 };
71
72 #define UVCIOC_CTRL_MAP _IOWR('u', 0x20, struct uvc_xu_control_mapping)
73 #define UVCIOC_CTRL_QUERY _IOWR('u', 0x21, struct uvc_xu_control_query)
74
75 /*
76 * Metadata node
77 */
78
79 /**
80 * struct uvc_meta_buf - metadata buffer building block
81 * @ns: system timestamp of the payload in nanoseconds
82 * @sof: USB Frame Number
83 * @length: length of the payload header
84 * @flags: payload header flags
85 * @buf: optional device-specific header data
86 *
87 * UVC metadata nodes fill buffers with possibly multiple instances of this
88 * struct. The first two fields are added by the driver, they can be used for
89 * clock synchronisation. The rest is an exact copy of a UVC payload header.
90 * Only complete objects with complete buffers are included. Therefore it's
91 * always sizeof(meta->ns) + sizeof(meta->sof) + meta->length bytes large.
92 */
93 struct uvc_meta_buf {
94 __u64 ns;
95 __u16 sof;
96 __u8 length;
97 __u8 flags;
98 __u8 buf[];
99 } __attribute__((packed));
100
101 #endif
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