uvcvideo.h (2626B) - Raw
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