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libwebcam/libwebcam-0.1.1-uvcvideo_h.patch
Davide Madrisan 3989e2e5b8 update to 0.2.0 [release 0.2.0-1mamba;Tue Mar 16 2010]
2024-01-06 06:07:27 +01:00

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diff -purN libwebcam-0.1.1/common/include/uvcvideo.h libwebcam-0.1.1-uvcvideo_h/common/include/uvcvideo.h
--- libwebcam-0.1.1/common/include/uvcvideo.h 1970-01-01 01:00:00.000000000 +0100
+++ libwebcam-0.1.1-uvcvideo_h/common/include/uvcvideo.h 2010-03-16 19:23:21.000000000 +0100
@@ -0,0 +1,665 @@
+#ifndef _USB_VIDEO_H_
+#define _USB_VIDEO_H_
+
+#include <linux/kernel.h>
+#include <linux/videodev2.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_CONTROL_SET_CUR (1 << 0)
+#define UVC_CONTROL_GET_CUR (1 << 1)
+#define UVC_CONTROL_GET_MIN (1 << 2)
+#define UVC_CONTROL_GET_MAX (1 << 3)
+#define UVC_CONTROL_GET_RES (1 << 4)
+#define UVC_CONTROL_GET_DEF (1 << 5)
+/* Control should be saved at suspend and restored at resume. */
+#define UVC_CONTROL_RESTORE (1 << 6)
+/* Control can be updated by the camera. */
+#define UVC_CONTROL_AUTO_UPDATE (1 << 7)
+
+#define UVC_CONTROL_GET_RANGE (UVC_CONTROL_GET_CUR | UVC_CONTROL_GET_MIN | \
+ UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES | \
+ UVC_CONTROL_GET_DEF)
+
+struct uvc_xu_control_info {
+ __u8 entity[16];
+ __u8 index;
+ __u8 selector;
+ __u16 size;
+ __u32 flags;
+};
+
+struct uvc_xu_control_mapping {
+ __u32 id;
+ __u8 name[32];
+ __u8 entity[16];
+ __u8 selector;
+
+ __u8 size;
+ __u8 offset;
+ enum v4l2_ctrl_type v4l2_type;
+ __u32 data_type;
+};
+
+struct uvc_xu_control {
+ __u8 unit;
+ __u8 selector;
+ __u16 size;
+ __u8 *data;
+};
+
+#define UVCIOC_CTRL_ADD _IOW('U', 1, struct uvc_xu_control_info)
+#define UVCIOC_CTRL_MAP _IOWR('U', 2, struct uvc_xu_control_mapping)
+#define UVCIOC_CTRL_GET _IOWR('U', 3, struct uvc_xu_control)
+#define UVCIOC_CTRL_SET _IOW('U', 4, struct uvc_xu_control)
+
+#ifdef __KERNEL__
+
+#include <linux/poll.h>
+#include <linux/usb/video.h>
+#include "compat.h"
+
+/* --------------------------------------------------------------------------
+ * UVC constants
+ */
+
+#define UVC_TERM_INPUT 0x0000
+#define UVC_TERM_OUTPUT 0x8000
+#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000)
+
+#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff)
+#define UVC_ENTITY_IS_UNIT(entity) (((entity)->type & 0xff00) == 0)
+#define UVC_ENTITY_IS_TERM(entity) (((entity)->type & 0xff00) != 0)
+#define UVC_ENTITY_IS_ITERM(entity) \
+ (UVC_ENTITY_IS_TERM(entity) && \
+ ((entity)->type & 0x8000) == UVC_TERM_INPUT)
+#define UVC_ENTITY_IS_OTERM(entity) \
+ (UVC_ENTITY_IS_TERM(entity) && \
+ ((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
+
+
+/* ------------------------------------------------------------------------
+ * GUIDs
+ */
+#define UVC_GUID_UVC_CAMERA \
+ {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
+#define UVC_GUID_UVC_OUTPUT \
+ {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
+#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
+ {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
+#define UVC_GUID_UVC_PROCESSING \
+ {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
+#define UVC_GUID_UVC_SELECTOR \
+ {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
+
+#define UVC_GUID_FORMAT_MJPEG \
+ { 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
+ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_YUY2 \
+ { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
+ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_NV12 \
+ { 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
+ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_YV12 \
+ { 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
+ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_I420 \
+ { 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
+ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_UYVY \
+ { 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \
+ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_Y800 \
+ { 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \
+ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_BY8 \
+ { 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
+ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+
+
+/* ------------------------------------------------------------------------
+ * Driver specific constants.
+ */
+
+#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 0)
+
+/* Number of isochronous URBs. */
+#define UVC_URBS 5
+/* Maximum number of packets per URB. */
+#define UVC_MAX_PACKETS 32
+/* Maximum number of video buffers. */
+#define UVC_MAX_VIDEO_BUFFERS 32
+/* Maximum status buffer size in bytes of interrupt URB. */
+#define UVC_MAX_STATUS_SIZE 16
+
+#define UVC_CTRL_CONTROL_TIMEOUT 300
+#define UVC_CTRL_STREAMING_TIMEOUT 3000
+
+/* Devices quirks */
+#define UVC_QUIRK_STATUS_INTERVAL 0x00000001
+#define UVC_QUIRK_PROBE_MINMAX 0x00000002
+#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
+#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
+#define UVC_QUIRK_STREAM_NO_FID 0x00000010
+#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
+#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
+#define UVC_QUIRK_PROBE_DEF 0x00000100
+
+/* Format flags */
+#define UVC_FMT_FLAG_COMPRESSED 0x00000001
+#define UVC_FMT_FLAG_STREAM 0x00000002
+
+/* ------------------------------------------------------------------------
+ * Structures.
+ */
+
+struct uvc_device;
+
+/* TODO: Put the most frequently accessed fields at the beginning of
+ * structures to maximize cache efficiency.
+ */
+struct uvc_streaming_control {
+ __u16 bmHint;
+ __u8 bFormatIndex;
+ __u8 bFrameIndex;
+ __u32 dwFrameInterval;
+ __u16 wKeyFrameRate;
+ __u16 wPFrameRate;
+ __u16 wCompQuality;
+ __u16 wCompWindowSize;
+ __u16 wDelay;
+ __u32 dwMaxVideoFrameSize;
+ __u32 dwMaxPayloadTransferSize;
+ __u32 dwClockFrequency;
+ __u8 bmFramingInfo;
+ __u8 bPreferedVersion;
+ __u8 bMinVersion;
+ __u8 bMaxVersion;
+};
+
+struct uvc_menu_info {
+ __u32 value;
+ __u8 name[32];
+};
+
+struct uvc_control_info {
+ struct list_head list;
+ struct list_head mappings;
+
+ __u8 entity[16];
+ __u8 index;
+ __u8 selector;
+
+ __u16 size;
+ __u32 flags;
+};
+
+struct uvc_control_mapping {
+ struct list_head list;
+
+ struct uvc_control_info *ctrl;
+
+ __u32 id;
+ __u8 name[32];
+ __u8 entity[16];
+ __u8 selector;
+
+ __u8 size;
+ __u8 offset;
+ enum v4l2_ctrl_type v4l2_type;
+ __u32 data_type;
+
+ struct uvc_menu_info *menu_info;
+ __u32 menu_count;
+
+ __s32 (*get) (struct uvc_control_mapping *mapping, __u8 query,
+ const __u8 *data);
+ void (*set) (struct uvc_control_mapping *mapping, __s32 value,
+ __u8 *data);
+};
+
+struct uvc_control {
+ struct uvc_entity *entity;
+ struct uvc_control_info *info;
+
+ __u8 index; /* Used to match the uvc_control entry with a
+ uvc_control_info. */
+ __u8 dirty : 1,
+ loaded : 1,
+ modified : 1;
+
+ __u8 *data;
+};
+
+struct uvc_format_desc {
+ char *name;
+ __u8 guid[16];
+ __u32 fcc;
+};
+
+/* The term 'entity' refers to both UVC units and UVC terminals.
+ *
+ * The type field is either the terminal type (wTerminalType in the terminal
+ * descriptor), or the unit type (bDescriptorSubtype in the unit descriptor).
+ * As the bDescriptorSubtype field is one byte long, the type value will
+ * always have a null MSB for units. All terminal types defined by the UVC
+ * specification have a non-null MSB, so it is safe to use the MSB to
+ * differentiate between units and terminals as long as the descriptor parsing
+ * code makes sure terminal types have a non-null MSB.
+ *
+ * For terminals, the type's most significant bit stores the terminal
+ * direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should
+ * always be accessed with the UVC_ENTITY_* macros and never directly.
+ */
+
+struct uvc_entity {
+ struct list_head list; /* Entity as part of a UVC device. */
+ struct list_head chain; /* Entity as part of a video device
+ * chain. */
+ __u8 id;
+ __u16 type;
+ char name[64];
+
+ union {
+ struct {
+ __u16 wObjectiveFocalLengthMin;
+ __u16 wObjectiveFocalLengthMax;
+ __u16 wOcularFocalLength;
+ __u8 bControlSize;
+ __u8 *bmControls;
+ } camera;
+
+ struct {
+ __u8 bControlSize;
+ __u8 *bmControls;
+ __u8 bTransportModeSize;
+ __u8 *bmTransportModes;
+ } media;
+
+ struct {
+ } output;
+
+ struct {
+ __u16 wMaxMultiplier;
+ __u8 bControlSize;
+ __u8 *bmControls;
+ __u8 bmVideoStandards;
+ } processing;
+
+ struct {
+ } selector;
+
+ struct {
+ __u8 guidExtensionCode[16];
+ __u8 bNumControls;
+ __u8 bControlSize;
+ __u8 *bmControls;
+ __u8 *bmControlsType;
+ } extension;
+ };
+
+ __u8 bNrInPins;
+ __u8 *baSourceID;
+
+ unsigned int ncontrols;
+ struct uvc_control *controls;
+};
+
+struct uvc_frame {
+ __u8 bFrameIndex;
+ __u8 bmCapabilities;
+ __u16 wWidth;
+ __u16 wHeight;
+ __u32 dwMinBitRate;
+ __u32 dwMaxBitRate;
+ __u32 dwMaxVideoFrameBufferSize;
+ __u8 bFrameIntervalType;
+ __u32 dwDefaultFrameInterval;
+ __u32 *dwFrameInterval;
+};
+
+struct uvc_format {
+ __u8 type;
+ __u8 index;
+ __u8 bpp;
+ __u8 colorspace;
+ __u32 fcc;
+ __u32 flags;
+
+ char name[32];
+
+ unsigned int nframes;
+ struct uvc_frame *frame;
+};
+
+struct uvc_streaming_header {
+ __u8 bNumFormats;
+ __u8 bEndpointAddress;
+ __u8 bTerminalLink;
+ __u8 bControlSize;
+ __u8 *bmaControls;
+ /* The following fields are used by input headers only. */
+ __u8 bmInfo;
+ __u8 bStillCaptureMethod;
+ __u8 bTriggerSupport;
+ __u8 bTriggerUsage;
+};
+
+enum uvc_buffer_state {
+ UVC_BUF_STATE_IDLE = 0,
+ UVC_BUF_STATE_QUEUED = 1,
+ UVC_BUF_STATE_ACTIVE = 2,
+ UVC_BUF_STATE_DONE = 3,
+ UVC_BUF_STATE_ERROR = 4,
+};
+
+struct uvc_buffer {
+ unsigned long vma_use_count;
+ struct list_head stream;
+
+ /* Touched by interrupt handler. */
+ struct v4l2_buffer buf;
+ struct list_head queue;
+ wait_queue_head_t wait;
+ enum uvc_buffer_state state;
+};
+
+#define UVC_QUEUE_STREAMING (1 << 0)
+#define UVC_QUEUE_DISCONNECTED (1 << 1)
+#define UVC_QUEUE_DROP_INCOMPLETE (1 << 2)
+
+struct uvc_video_queue {
+ enum v4l2_buf_type type;
+
+ void *mem;
+ unsigned int flags;
+ __u32 sequence;
+
+ unsigned int count;
+ unsigned int buf_size;
+ unsigned int buf_used;
+ struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS];
+ struct mutex mutex; /* protects buffers and mainqueue */
+ spinlock_t irqlock; /* protects irqqueue */
+
+ struct list_head mainqueue;
+ struct list_head irqqueue;
+};
+
+struct uvc_video_chain {
+ struct uvc_device *dev;
+ struct list_head list;
+
+ struct list_head entities; /* All entities */
+ struct uvc_entity *processing; /* Processing unit */
+ struct uvc_entity *selector; /* Selector unit */
+
+ struct mutex ctrl_mutex;
+};
+
+struct uvc_streaming {
+ struct list_head list;
+ struct uvc_device *dev;
+ struct video_device *vdev;
+ struct uvc_video_chain *chain;
+ atomic_t active;
+
+ struct usb_interface *intf;
+ int intfnum;
+ __u16 maxpsize;
+
+ struct uvc_streaming_header header;
+ enum v4l2_buf_type type;
+
+ unsigned int nformats;
+ struct uvc_format *format;
+
+ struct uvc_streaming_control ctrl;
+ struct uvc_format *cur_format;
+ struct uvc_frame *cur_frame;
+
+ struct mutex mutex;
+
+ 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;
+
+ __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;
+ struct list_head list;
+ atomic_t users;
+
+ /* Video control interface */
+ __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;
+
+ struct list_head devices; /* struct uvc_device list */
+ struct list_head controls; /* struct uvc_control_info list */
+ struct mutex ctrl_mutex; /* protects controls and devices
+ lists */
+};
+
+/* ------------------------------------------------------------------------
+ * 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_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)
+
+#define UVC_GUID_FORMAT "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-" \
+ "%02x%02x%02x%02x%02x%02x"
+#define UVC_GUID_ARGS(guid) \
+ (guid)[3], (guid)[2], (guid)[1], (guid)[0], \
+ (guid)[5], (guid)[4], \
+ (guid)[7], (guid)[6], \
+ (guid)[8], (guid)[9], \
+ (guid)[10], (guid)[11], (guid)[12], \
+ (guid)[13], (guid)[14], (guid)[15]
+
+/* --------------------------------------------------------------------------
+ * Internal functions.
+ */
+
+/* Core driver */
+extern struct uvc_driver uvc_driver;
+
+/* Video buffers queue management. */
+extern void uvc_queue_init(struct uvc_video_queue *queue,
+ enum v4l2_buf_type type);
+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 unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
+ struct file *file, poll_table *wait);
+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;
+
+/* 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);
+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 struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,
+ __u32 v4l2_id, struct uvc_control_mapping **mapping);
+extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
+ struct v4l2_queryctrl *v4l2_ctrl);
+
+extern int uvc_ctrl_add_info(struct uvc_control_info *info);
+extern int uvc_ctrl_add_mapping(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 void uvc_ctrl_init(void);
+
+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 *ctrl, int set);
+
+/* 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
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