704 lines
19 KiB
C
704 lines
19 KiB
C
#ifndef _USB_VIDEO_H_
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#define _USB_VIDEO_H_
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#include <linux/kernel.h>
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#include <linux/videodev2.h>
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#ifndef __KERNEL__
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/*
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* This header provides binary compatibility with applications using the private
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* uvcvideo API. This API is deprecated and will be removed in 2.6.42.
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* Applications should be recompiled against the public linux/uvcvideo.h header.
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*/
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#warn "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead."
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/*
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* Dynamic controls
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*/
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/* Data types for UVC control data */
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#define UVC_CTRL_DATA_TYPE_RAW 0
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#define UVC_CTRL_DATA_TYPE_SIGNED 1
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#define UVC_CTRL_DATA_TYPE_UNSIGNED 2
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#define UVC_CTRL_DATA_TYPE_BOOLEAN 3
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#define UVC_CTRL_DATA_TYPE_ENUM 4
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#define UVC_CTRL_DATA_TYPE_BITMASK 5
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/* Control flags */
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#define UVC_CONTROL_SET_CUR (1 << 0)
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#define UVC_CONTROL_GET_CUR (1 << 1)
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#define UVC_CONTROL_GET_MIN (1 << 2)
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#define UVC_CONTROL_GET_MAX (1 << 3)
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#define UVC_CONTROL_GET_RES (1 << 4)
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#define UVC_CONTROL_GET_DEF (1 << 5)
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#define UVC_CONTROL_RESTORE (1 << 6)
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#define UVC_CONTROL_AUTO_UPDATE (1 << 7)
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#define UVC_CONTROL_GET_RANGE (UVC_CONTROL_GET_CUR | UVC_CONTROL_GET_MIN | \
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UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES | \
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UVC_CONTROL_GET_DEF)
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struct uvc_menu_info {
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__u32 value;
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__u8 name[32];
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};
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struct uvc_xu_control_mapping {
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__u32 id;
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__u8 name[32];
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__u8 entity[16];
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__u8 selector;
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__u8 size;
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__u8 offset;
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__u32 v4l2_type;
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__u32 data_type;
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struct uvc_menu_info __user *menu_info;
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__u32 menu_count;
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__u32 reserved[4];
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};
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#endif
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struct uvc_xu_control_info {
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__u8 entity[16];
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__u8 index;
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__u8 selector;
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__u16 size;
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__u32 flags;
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};
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struct uvc_xu_control_mapping_old {
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__u8 reserved[64];
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};
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struct uvc_xu_control {
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__u8 unit;
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__u8 selector;
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__u16 size;
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__u8 __user *data;
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};
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#ifndef __KERNEL__
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#define UVCIOC_CTRL_ADD _IOW('U', 1, struct uvc_xu_control_info)
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#define UVCIOC_CTRL_MAP_OLD _IOWR('U', 2, struct uvc_xu_control_mapping_old)
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#define UVCIOC_CTRL_MAP _IOWR('U', 2, struct uvc_xu_control_mapping)
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#define UVCIOC_CTRL_GET _IOWR('U', 3, struct uvc_xu_control)
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#define UVCIOC_CTRL_SET _IOW('U', 4, struct uvc_xu_control)
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#else
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#define __UVCIOC_CTRL_ADD _IOW('U', 1, struct uvc_xu_control_info)
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#define __UVCIOC_CTRL_MAP_OLD _IOWR('U', 2, struct uvc_xu_control_mapping_old)
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#define __UVCIOC_CTRL_MAP _IOWR('U', 2, struct uvc_xu_control_mapping)
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#define __UVCIOC_CTRL_GET _IOWR('U', 3, struct uvc_xu_control)
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#define __UVCIOC_CTRL_SET _IOW('U', 4, struct uvc_xu_control)
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#endif
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#ifdef __KERNEL__
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#include <linux/poll.h>
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#include <linux/usb.h>
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#include <linux/usb/video.h>
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#include <linux/uvcvideo.h>
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#include <media/media-device.h>
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#include <media/v4l2-device.h>
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/* --------------------------------------------------------------------------
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* UVC constants
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*/
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#define UVC_TERM_INPUT 0x0000
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#define UVC_TERM_OUTPUT 0x8000
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#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000)
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#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff)
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#define UVC_ENTITY_IS_UNIT(entity) (((entity)->type & 0xff00) == 0)
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#define UVC_ENTITY_IS_TERM(entity) (((entity)->type & 0xff00) != 0)
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#define UVC_ENTITY_IS_ITERM(entity) \
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(UVC_ENTITY_IS_TERM(entity) && \
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((entity)->type & 0x8000) == UVC_TERM_INPUT)
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#define UVC_ENTITY_IS_OTERM(entity) \
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(UVC_ENTITY_IS_TERM(entity) && \
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((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
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/* ------------------------------------------------------------------------
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* GUIDs
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*/
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#define UVC_GUID_UVC_CAMERA \
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
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#define UVC_GUID_UVC_OUTPUT \
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
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#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
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#define UVC_GUID_UVC_PROCESSING \
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
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#define UVC_GUID_UVC_SELECTOR \
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
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#define UVC_GUID_FORMAT_MJPEG \
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{ 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_YUY2 \
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{ 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_YUY2_ISIGHT \
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{ 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_NV12 \
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{ 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_YV12 \
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{ 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_I420 \
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{ 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_UYVY \
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{ 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_Y800 \
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{ 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_Y16 \
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{ 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_BY8 \
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{ 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_RGBP \
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{ 'R', 'G', 'B', 'P', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_M420 \
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{ 'M', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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/* ------------------------------------------------------------------------
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* Driver specific constants.
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*/
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#define DRIVER_VERSION "1.1.1"
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/* Number of isochronous URBs. */
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#define UVC_URBS 5
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/* Maximum number of packets per URB. */
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#define UVC_MAX_PACKETS 32
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/* Maximum number of video buffers. */
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#define UVC_MAX_VIDEO_BUFFERS 32
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/* Maximum status buffer size in bytes of interrupt URB. */
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#define UVC_MAX_STATUS_SIZE 16
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#define UVC_CTRL_CONTROL_TIMEOUT 300
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#define UVC_CTRL_STREAMING_TIMEOUT 5000
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/* Maximum allowed number of control mappings per device */
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#define UVC_MAX_CONTROL_MAPPINGS 1024
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/* Devices quirks */
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#define UVC_QUIRK_STATUS_INTERVAL 0x00000001
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#define UVC_QUIRK_PROBE_MINMAX 0x00000002
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#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
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#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
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#define UVC_QUIRK_STREAM_NO_FID 0x00000010
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#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
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#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
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#define UVC_QUIRK_PROBE_DEF 0x00000100
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#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
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/* Format flags */
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#define UVC_FMT_FLAG_COMPRESSED 0x00000001
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#define UVC_FMT_FLAG_STREAM 0x00000002
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/* ------------------------------------------------------------------------
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* Structures.
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*/
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struct uvc_device;
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/* TODO: Put the most frequently accessed fields at the beginning of
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* structures to maximize cache efficiency.
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*/
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struct uvc_control_info {
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struct list_head mappings;
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__u8 entity[16];
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__u8 index; /* Bit index in bmControls */
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__u8 selector;
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__u16 size;
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__u32 flags;
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};
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struct uvc_control_mapping {
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struct list_head list;
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struct uvc_control_info *ctrl;
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__u32 id;
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__u8 name[32];
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__u8 entity[16];
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__u8 selector;
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__u8 size;
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__u8 offset;
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enum v4l2_ctrl_type v4l2_type;
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__u32 data_type;
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struct uvc_menu_info *menu_info;
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__u32 menu_count;
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__s32 (*get) (struct uvc_control_mapping *mapping, __u8 query,
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const __u8 *data);
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void (*set) (struct uvc_control_mapping *mapping, __s32 value,
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__u8 *data);
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};
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struct uvc_control {
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struct uvc_entity *entity;
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struct uvc_control_info info;
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__u8 index; /* Used to match the uvc_control entry with a
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uvc_control_info. */
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__u8 dirty:1,
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loaded:1,
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modified:1,
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cached:1,
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initialized:1;
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__u8 *uvc_data;
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};
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struct uvc_format_desc {
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char *name;
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__u8 guid[16];
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__u32 fcc;
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};
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/* The term 'entity' refers to both UVC units and UVC terminals.
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*
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* The type field is either the terminal type (wTerminalType in the terminal
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* descriptor), or the unit type (bDescriptorSubtype in the unit descriptor).
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* As the bDescriptorSubtype field is one byte long, the type value will
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* always have a null MSB for units. All terminal types defined by the UVC
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* specification have a non-null MSB, so it is safe to use the MSB to
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* differentiate between units and terminals as long as the descriptor parsing
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* code makes sure terminal types have a non-null MSB.
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*
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* For terminals, the type's most significant bit stores the terminal
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* direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should
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* always be accessed with the UVC_ENTITY_* macros and never directly.
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*/
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struct uvc_entity {
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struct list_head list; /* Entity as part of a UVC device. */
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struct list_head chain; /* Entity as part of a video device
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* chain. */
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__u8 id;
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__u16 type;
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char name[64];
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/* Media controller-related fields. */
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struct video_device *vdev;
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struct v4l2_subdev subdev;
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unsigned int num_pads;
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unsigned int num_links;
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struct media_pad *pads;
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union {
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struct {
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__u16 wObjectiveFocalLengthMin;
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__u16 wObjectiveFocalLengthMax;
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__u16 wOcularFocalLength;
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__u8 bControlSize;
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__u8 *bmControls;
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} camera;
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struct {
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__u8 bControlSize;
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__u8 *bmControls;
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__u8 bTransportModeSize;
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__u8 *bmTransportModes;
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} media;
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struct {
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} output;
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struct {
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__u16 wMaxMultiplier;
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__u8 bControlSize;
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__u8 *bmControls;
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__u8 bmVideoStandards;
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} processing;
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struct {
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} selector;
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struct {
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__u8 guidExtensionCode[16];
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__u8 bNumControls;
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__u8 bControlSize;
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__u8 *bmControls;
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__u8 *bmControlsType;
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} extension;
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};
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__u8 bNrInPins;
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__u8 *baSourceID;
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unsigned int ncontrols;
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struct uvc_control *controls;
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};
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struct uvc_frame {
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__u8 bFrameIndex;
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__u8 bmCapabilities;
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__u16 wWidth;
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__u16 wHeight;
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__u32 dwMinBitRate;
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__u32 dwMaxBitRate;
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__u32 dwMaxVideoFrameBufferSize;
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__u8 bFrameIntervalType;
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__u32 dwDefaultFrameInterval;
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__u32 *dwFrameInterval;
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};
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struct uvc_format {
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__u8 type;
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__u8 index;
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__u8 bpp;
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__u8 colorspace;
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__u32 fcc;
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__u32 flags;
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char name[32];
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unsigned int nframes;
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struct uvc_frame *frame;
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};
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struct uvc_streaming_header {
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__u8 bNumFormats;
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__u8 bEndpointAddress;
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__u8 bTerminalLink;
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__u8 bControlSize;
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__u8 *bmaControls;
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/* The following fields are used by input headers only. */
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__u8 bmInfo;
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__u8 bStillCaptureMethod;
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__u8 bTriggerSupport;
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__u8 bTriggerUsage;
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};
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enum uvc_buffer_state {
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UVC_BUF_STATE_IDLE = 0,
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UVC_BUF_STATE_QUEUED = 1,
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UVC_BUF_STATE_ACTIVE = 2,
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UVC_BUF_STATE_READY = 3,
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UVC_BUF_STATE_DONE = 4,
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UVC_BUF_STATE_ERROR = 5,
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};
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struct uvc_buffer {
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unsigned long vma_use_count;
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struct list_head stream;
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/* Touched by interrupt handler. */
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struct v4l2_buffer buf;
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struct list_head queue;
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wait_queue_head_t wait;
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enum uvc_buffer_state state;
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unsigned int error;
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};
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#define UVC_QUEUE_STREAMING (1 << 0)
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#define UVC_QUEUE_DISCONNECTED (1 << 1)
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#define UVC_QUEUE_DROP_CORRUPTED (1 << 2)
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struct uvc_video_queue {
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enum v4l2_buf_type type;
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void *mem;
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unsigned int flags;
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unsigned int count;
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unsigned int buf_size;
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unsigned int buf_used;
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struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS];
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struct mutex mutex; /* protects buffers and mainqueue */
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spinlock_t irqlock; /* protects irqqueue */
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struct list_head mainqueue;
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struct list_head irqqueue;
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};
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struct uvc_video_chain {
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struct uvc_device *dev;
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struct list_head list;
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struct list_head entities; /* All entities */
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struct uvc_entity *processing; /* Processing unit */
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struct uvc_entity *selector; /* Selector unit */
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struct mutex ctrl_mutex; /* Protects ctrl.info */
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};
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struct uvc_streaming {
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struct list_head list;
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struct uvc_device *dev;
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struct video_device *vdev;
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struct uvc_video_chain *chain;
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atomic_t active;
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struct usb_interface *intf;
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int intfnum;
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__u16 maxpsize;
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struct uvc_streaming_header header;
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enum v4l2_buf_type type;
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unsigned int nformats;
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struct uvc_format *format;
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struct uvc_streaming_control ctrl;
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struct uvc_format *cur_format;
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struct uvc_frame *cur_frame;
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/* Protect access to ctrl, cur_format, cur_frame and hardware video
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* probe control.
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*/
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struct mutex mutex;
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unsigned int frozen : 1;
|
|
struct uvc_video_queue queue;
|
|
void (*decode) (struct urb *urb, struct uvc_streaming *video,
|
|
struct uvc_buffer *buf);
|
|
|
|
/* Context data used by the bulk completion handler. */
|
|
struct {
|
|
__u8 header[256];
|
|
unsigned int header_size;
|
|
int skip_payload;
|
|
__u32 payload_size;
|
|
__u32 max_payload_size;
|
|
} bulk;
|
|
|
|
struct urb *urb[UVC_URBS];
|
|
char *urb_buffer[UVC_URBS];
|
|
dma_addr_t urb_dma[UVC_URBS];
|
|
unsigned int urb_size;
|
|
|
|
__u32 sequence;
|
|
__u8 last_fid;
|
|
};
|
|
|
|
enum uvc_device_state {
|
|
UVC_DEV_DISCONNECTED = 1,
|
|
};
|
|
|
|
struct uvc_device {
|
|
struct usb_device *udev;
|
|
struct usb_interface *intf;
|
|
unsigned long warnings;
|
|
__u32 quirks;
|
|
int intfnum;
|
|
char name[32];
|
|
|
|
enum uvc_device_state state;
|
|
atomic_t users;
|
|
atomic_t nmappings;
|
|
|
|
/* Video control interface */
|
|
#ifdef CONFIG_MEDIA_CONTROLLER
|
|
struct media_device mdev;
|
|
#endif
|
|
struct v4l2_device vdev;
|
|
__u16 uvc_version;
|
|
__u32 clock_frequency;
|
|
|
|
struct list_head entities;
|
|
struct list_head chains;
|
|
|
|
/* Video Streaming interfaces */
|
|
struct list_head streams;
|
|
atomic_t nstreams;
|
|
|
|
/* Status Interrupt Endpoint */
|
|
struct usb_host_endpoint *int_ep;
|
|
struct urb *int_urb;
|
|
__u8 *status;
|
|
struct input_dev *input;
|
|
char input_phys[64];
|
|
};
|
|
|
|
enum uvc_handle_state {
|
|
UVC_HANDLE_PASSIVE = 0,
|
|
UVC_HANDLE_ACTIVE = 1,
|
|
};
|
|
|
|
struct uvc_fh {
|
|
struct uvc_video_chain *chain;
|
|
struct uvc_streaming *stream;
|
|
enum uvc_handle_state state;
|
|
};
|
|
|
|
struct uvc_driver {
|
|
struct usb_driver driver;
|
|
};
|
|
|
|
/* ------------------------------------------------------------------------
|
|
* Debugging, printing and logging
|
|
*/
|
|
|
|
#define UVC_TRACE_PROBE (1 << 0)
|
|
#define UVC_TRACE_DESCR (1 << 1)
|
|
#define UVC_TRACE_CONTROL (1 << 2)
|
|
#define UVC_TRACE_FORMAT (1 << 3)
|
|
#define UVC_TRACE_CAPTURE (1 << 4)
|
|
#define UVC_TRACE_CALLS (1 << 5)
|
|
#define UVC_TRACE_IOCTL (1 << 6)
|
|
#define UVC_TRACE_FRAME (1 << 7)
|
|
#define UVC_TRACE_SUSPEND (1 << 8)
|
|
#define UVC_TRACE_STATUS (1 << 9)
|
|
#define UVC_TRACE_VIDEO (1 << 10)
|
|
|
|
#define UVC_WARN_MINMAX 0
|
|
#define UVC_WARN_PROBE_DEF 1
|
|
|
|
extern unsigned int uvc_clock_param;
|
|
extern unsigned int uvc_no_drop_param;
|
|
extern unsigned int uvc_trace_param;
|
|
extern unsigned int uvc_timeout_param;
|
|
|
|
#define uvc_trace(flag, msg...) \
|
|
do { \
|
|
if (uvc_trace_param & flag) \
|
|
printk(KERN_DEBUG "uvcvideo: " msg); \
|
|
} while (0)
|
|
|
|
#define uvc_warn_once(dev, warn, msg...) \
|
|
do { \
|
|
if (!test_and_set_bit(warn, &dev->warnings)) \
|
|
printk(KERN_INFO "uvcvideo: " msg); \
|
|
} while (0)
|
|
|
|
#define uvc_printk(level, msg...) \
|
|
printk(level "uvcvideo: " msg)
|
|
|
|
/* --------------------------------------------------------------------------
|
|
* Internal functions.
|
|
*/
|
|
|
|
/* Core driver */
|
|
extern struct uvc_driver uvc_driver;
|
|
|
|
extern struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
|
|
|
|
/* Video buffers queue management. */
|
|
extern void uvc_queue_init(struct uvc_video_queue *queue,
|
|
enum v4l2_buf_type type, int drop_corrupted);
|
|
extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
|
|
unsigned int nbuffers, unsigned int buflength);
|
|
extern int uvc_free_buffers(struct uvc_video_queue *queue);
|
|
extern int uvc_query_buffer(struct uvc_video_queue *queue,
|
|
struct v4l2_buffer *v4l2_buf);
|
|
extern int uvc_queue_buffer(struct uvc_video_queue *queue,
|
|
struct v4l2_buffer *v4l2_buf);
|
|
extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
|
|
struct v4l2_buffer *v4l2_buf, int nonblocking);
|
|
extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable);
|
|
extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
|
|
extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
|
|
struct uvc_buffer *buf);
|
|
extern int uvc_queue_mmap(struct uvc_video_queue *queue,
|
|
struct vm_area_struct *vma);
|
|
extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
|
|
struct file *file, poll_table *wait);
|
|
#ifndef CONFIG_MMU
|
|
extern unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
|
|
unsigned long pgoff);
|
|
#endif
|
|
extern int uvc_queue_allocated(struct uvc_video_queue *queue);
|
|
static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
|
|
{
|
|
return queue->flags & UVC_QUEUE_STREAMING;
|
|
}
|
|
|
|
/* V4L2 interface */
|
|
extern const struct v4l2_file_operations uvc_fops;
|
|
|
|
/* Media controller */
|
|
extern int uvc_mc_register_entities(struct uvc_video_chain *chain);
|
|
extern void uvc_mc_cleanup_entity(struct uvc_entity *entity);
|
|
|
|
/* Video */
|
|
extern int uvc_video_init(struct uvc_streaming *stream);
|
|
extern int uvc_video_suspend(struct uvc_streaming *stream);
|
|
extern int uvc_video_resume(struct uvc_streaming *stream, int reset);
|
|
extern int uvc_video_enable(struct uvc_streaming *stream, int enable);
|
|
extern int uvc_probe_video(struct uvc_streaming *stream,
|
|
struct uvc_streaming_control *probe);
|
|
extern int uvc_commit_video(struct uvc_streaming *stream,
|
|
struct uvc_streaming_control *ctrl);
|
|
extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
|
|
__u8 intfnum, __u8 cs, void *data, __u16 size);
|
|
|
|
/* Status */
|
|
extern int uvc_status_init(struct uvc_device *dev);
|
|
extern void uvc_status_cleanup(struct uvc_device *dev);
|
|
extern int uvc_status_start(struct uvc_device *dev);
|
|
extern void uvc_status_stop(struct uvc_device *dev);
|
|
extern int uvc_status_suspend(struct uvc_device *dev);
|
|
extern int uvc_status_resume(struct uvc_device *dev);
|
|
|
|
/* Controls */
|
|
extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
|
|
struct v4l2_queryctrl *v4l2_ctrl);
|
|
extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
|
|
struct v4l2_querymenu *query_menu);
|
|
|
|
extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
|
|
const struct uvc_control_mapping *mapping);
|
|
extern int uvc_ctrl_init_device(struct uvc_device *dev);
|
|
extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
|
|
extern int uvc_ctrl_resume_device(struct uvc_device *dev);
|
|
|
|
extern int uvc_ctrl_begin(struct uvc_video_chain *chain);
|
|
extern int __uvc_ctrl_commit(struct uvc_video_chain *chain, int rollback);
|
|
static inline int uvc_ctrl_commit(struct uvc_video_chain *chain)
|
|
{
|
|
return __uvc_ctrl_commit(chain, 0);
|
|
}
|
|
static inline int uvc_ctrl_rollback(struct uvc_video_chain *chain)
|
|
{
|
|
return __uvc_ctrl_commit(chain, 1);
|
|
}
|
|
|
|
extern int uvc_ctrl_get(struct uvc_video_chain *chain,
|
|
struct v4l2_ext_control *xctrl);
|
|
extern int uvc_ctrl_set(struct uvc_video_chain *chain,
|
|
struct v4l2_ext_control *xctrl);
|
|
|
|
extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
|
|
struct uvc_xu_control_query *xqry);
|
|
|
|
/* Utility functions */
|
|
extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
|
|
unsigned int n_terms, unsigned int threshold);
|
|
extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
|
|
uint32_t denominator);
|
|
extern struct usb_host_endpoint *uvc_find_endpoint(
|
|
struct usb_host_interface *alts, __u8 epaddr);
|
|
|
|
/* Quirks support */
|
|
void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
|
|
struct uvc_buffer *buf);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif
|