diff options
Diffstat (limited to 'drivers/media/video/uvc/uvcvideo.h')
| -rw-r--r-- | drivers/media/video/uvc/uvcvideo.h | 709 |
1 files changed, 0 insertions, 709 deletions
diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h deleted file mode 100644 index 7c3d082..0000000 --- a/drivers/media/video/uvc/uvcvideo.h +++ /dev/null @@ -1,709 +0,0 @@ -#ifndef _USB_VIDEO_H_ -#define _USB_VIDEO_H_ - -#ifndef __KERNEL__ -#error "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead." -#endif /* __KERNEL__ */ - -#include <linux/kernel.h> -#include <linux/poll.h> -#include <linux/usb.h> -#include <linux/usb/video.h> -#include <linux/uvcvideo.h> -#include <linux/videodev2.h> -#include <media/media-device.h> -#include <media/v4l2-device.h> -#include <media/v4l2-event.h> -#include <media/v4l2-fh.h> -#include <media/videobuf2-core.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_YUY2_ISIGHT \ - { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0x00, 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_Y16 \ - { 'Y', '1', '6', ' ', 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} -#define UVC_GUID_FORMAT_RGBP \ - { 'R', 'G', 'B', 'P', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} -#define UVC_GUID_FORMAT_M420 \ - { 'M', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} - -#define UVC_GUID_FORMAT_H264 \ - { 'H', '2', '6', '4', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} - -/* ------------------------------------------------------------------------ - * Driver specific constants. - */ - -#define DRIVER_VERSION "1.1.1" - -/* 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 5000 - -/* Maximum allowed number of control mappings per device */ -#define UVC_MAX_CONTROL_MAPPINGS 1024 -#define UVC_MAX_CONTROL_MENU_ENTRIES 32 - -/* 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 -#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200 - -/* 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_control_info { - struct list_head mappings; - - __u8 entity[16]; - __u8 index; /* Bit index in bmControls */ - __u8 selector; - - __u16 size; - __u32 flags; -}; - -struct uvc_control_mapping { - struct list_head list; - struct list_head ev_subs; - - __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; - - __u32 master_id; - __s32 master_manual; - __u32 slave_ids[2]; - - __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, - cached:1, - initialized:1; - - __u8 *uvc_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]; - - /* Media controller-related fields. */ - struct video_device *vdev; - struct v4l2_subdev subdev; - unsigned int num_pads; - unsigned int num_links; - struct media_pad *pads; - - 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_READY = 3, - UVC_BUF_STATE_DONE = 4, - UVC_BUF_STATE_ERROR = 5, -}; - -struct uvc_buffer { - struct vb2_buffer buf; - struct list_head queue; - - enum uvc_buffer_state state; - unsigned int error; - - void *mem; - unsigned int length; - unsigned int bytesused; - - u32 pts; -}; - -#define UVC_QUEUE_DISCONNECTED (1 << 0) -#define UVC_QUEUE_DROP_CORRUPTED (1 << 1) - -struct uvc_video_queue { - struct vb2_queue queue; - struct mutex mutex; /* Protects queue */ - - unsigned int flags; - unsigned int buf_used; - - spinlock_t irqlock; /* Protects irqqueue */ - 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; /* Protects ctrl.info */ -}; - -struct uvc_stats_frame { - unsigned int size; /* Number of bytes captured */ - unsigned int first_data; /* Index of the first non-empty packet */ - - unsigned int nb_packets; /* Number of packets */ - unsigned int nb_empty; /* Number of empty packets */ - unsigned int nb_invalid; /* Number of packets with an invalid header */ - unsigned int nb_errors; /* Number of packets with the error bit set */ - - unsigned int nb_pts; /* Number of packets with a PTS timestamp */ - unsigned int nb_pts_diffs; /* Number of PTS differences inside a frame */ - unsigned int last_pts_diff; /* Index of the last PTS difference */ - bool has_initial_pts; /* Whether the first non-empty packet has a PTS */ - bool has_early_pts; /* Whether a PTS is present before the first non-empty packet */ - u32 pts; /* PTS of the last packet */ - - unsigned int nb_scr; /* Number of packets with a SCR timestamp */ - unsigned int nb_scr_diffs; /* Number of SCR.STC differences inside a frame */ - u16 scr_sof; /* SCR.SOF of the last packet */ - u32 scr_stc; /* SCR.STC of the last packet */ -}; - -struct uvc_stats_stream { - struct timespec start_ts; /* Stream start timestamp */ - struct timespec stop_ts; /* Stream stop timestamp */ - - unsigned int nb_frames; /* Number of frames */ - - unsigned int nb_packets; /* Number of packets */ - unsigned int nb_empty; /* Number of empty packets */ - unsigned int nb_invalid; /* Number of packets with an invalid header */ - unsigned int nb_errors; /* Number of packets with the error bit set */ - - unsigned int nb_pts_constant; /* Number of frames with constant PTS */ - unsigned int nb_pts_early; /* Number of frames with early PTS */ - unsigned int nb_pts_initial; /* Number of frames with initial PTS */ - - unsigned int nb_scr_count_ok; /* Number of frames with at least one SCR per non empty packet */ - unsigned int nb_scr_diffs_ok; /* Number of frames with varying SCR.STC */ - unsigned int scr_sof_count; /* STC.SOF counter accumulated since stream start */ - unsigned int scr_sof; /* STC.SOF of the last packet */ - unsigned int min_sof; /* Minimum STC.SOF value */ - unsigned int max_sof; /* Maximum STC.SOF value */ -}; - -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; - /* Protect access to ctrl, cur_format, cur_frame and hardware video - * probe control. - */ - struct mutex mutex; - - /* Buffers queue. */ - 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; - - /* debugfs */ - struct dentry *debugfs_dir; - struct { - struct uvc_stats_frame frame; - struct uvc_stats_stream stream; - } stats; - - /* Timestamps support. */ - struct uvc_clock { - struct uvc_clock_sample { - u32 dev_stc; - u16 dev_sof; - struct timespec host_ts; - u16 host_sof; - } *samples; - - unsigned int head; - unsigned int count; - unsigned int size; - - u16 last_sof; - u16 sof_offset; - - spinlock_t lock; - } clock; -}; - -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 v4l2_fh vfh; - 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_TRACE_STATS (1 << 11) -#define UVC_TRACE_CLOCK (1 << 12) - -#define UVC_WARN_MINMAX 0 -#define UVC_WARN_PROBE_DEF 1 -#define UVC_WARN_XU_GET_RES 2 - -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, - struct v4l2_requestbuffers *rb); -extern void 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 vb2_is_streaming(&queue->queue); -} - -/* 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_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit, - __u8 intfnum, __u8 cs, void *data, __u16 size); -void uvc_video_clock_update(struct uvc_streaming *stream, - struct v4l2_buffer *v4l2_buf, - struct uvc_buffer *buf); - -/* 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 const struct v4l2_subscribed_event_ops uvc_ctrl_sub_ev_ops; - -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_fh *handle, int rollback, - const struct v4l2_ext_control *xctrls, - unsigned int xctrls_count); -static inline int uvc_ctrl_commit(struct uvc_fh *handle, - const struct v4l2_ext_control *xctrls, - unsigned int xctrls_count) -{ - return __uvc_ctrl_commit(handle, 0, xctrls, xctrls_count); -} -static inline int uvc_ctrl_rollback(struct uvc_fh *handle) -{ - return __uvc_ctrl_commit(handle, 1, NULL, 0); -} - -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); - -/* debugfs and statistics */ -int uvc_debugfs_init(void); -void uvc_debugfs_cleanup(void); -int uvc_debugfs_init_stream(struct uvc_streaming *stream); -void uvc_debugfs_cleanup_stream(struct uvc_streaming *stream); - -size_t uvc_video_stats_dump(struct uvc_streaming *stream, char *buf, - size_t size); - -#endif |
