![Laurent Pinchart](/assets/img/avatar_default.png)
The bNrInPins and baSourceID fields are common among all entities (some of use bSourceID but this is conceptually the same). Move those two fields out of entity type-specific unions into the uvc_entity structure top level. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
666 lines
17 KiB
C
666 lines
17 KiB
C
#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 __user *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>
|
|
|
|
/* --------------------------------------------------------------------------
|
|
* 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
|
|
|