1#ifndef _USB_VIDEO_H_
2#define _USB_VIDEO_H_
3
4#ifndef __KERNEL__
5#error "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead."
6#endif
7
8#include <linux/kernel.h>
9#include <linux/poll.h>
10#include <linux/usb.h>
11#include <linux/usb/video.h>
12#include <linux/uvcvideo.h>
13#include <linux/videodev2.h>
14#include <media/media-device.h>
15#include <media/v4l2-device.h>
16#include <media/v4l2-event.h>
17#include <media/v4l2-fh.h>
18#include <media/videobuf2-core.h>
19
20
21
22
23
24#define UVC_TERM_INPUT 0x0000
25#define UVC_TERM_OUTPUT 0x8000
26#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000)
27
28#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff)
29#define UVC_ENTITY_IS_UNIT(entity) (((entity)->type & 0xff00) == 0)
30#define UVC_ENTITY_IS_TERM(entity) (((entity)->type & 0xff00) != 0)
31#define UVC_ENTITY_IS_ITERM(entity) \
32 (UVC_ENTITY_IS_TERM(entity) && \
33 ((entity)->type & 0x8000) == UVC_TERM_INPUT)
34#define UVC_ENTITY_IS_OTERM(entity) \
35 (UVC_ENTITY_IS_TERM(entity) && \
36 ((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
37
38
39
40
41
42#define UVC_GUID_UVC_CAMERA \
43 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
44 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
45#define UVC_GUID_UVC_OUTPUT \
46 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
47 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
48#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
49 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
50 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
51#define UVC_GUID_UVC_PROCESSING \
52 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
53 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
54#define UVC_GUID_UVC_SELECTOR \
55 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
56 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
57
58#define UVC_GUID_FORMAT_MJPEG \
59 { 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
60 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
61#define UVC_GUID_FORMAT_YUY2 \
62 { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
63 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
64#define UVC_GUID_FORMAT_YUY2_ISIGHT \
65 { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
66 0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71}
67#define UVC_GUID_FORMAT_NV12 \
68 { 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
69 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
70#define UVC_GUID_FORMAT_YV12 \
71 { 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
72 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
73#define UVC_GUID_FORMAT_I420 \
74 { 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
75 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
76#define UVC_GUID_FORMAT_UYVY \
77 { 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \
78 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
79#define UVC_GUID_FORMAT_Y800 \
80 { 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \
81 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
82#define UVC_GUID_FORMAT_Y8 \
83 { 'Y', '8', ' ', ' ', 0x00, 0x00, 0x10, 0x00, \
84 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
85#define UVC_GUID_FORMAT_Y10 \
86 { 'Y', '1', '0', ' ', 0x00, 0x00, 0x10, 0x00, \
87 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
88#define UVC_GUID_FORMAT_Y12 \
89 { 'Y', '1', '2', ' ', 0x00, 0x00, 0x10, 0x00, \
90 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
91#define UVC_GUID_FORMAT_Y16 \
92 { 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
93 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
94#define UVC_GUID_FORMAT_BY8 \
95 { 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
96 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
97#define UVC_GUID_FORMAT_BA81 \
98 { 'B', 'A', '8', '1', 0x00, 0x00, 0x10, 0x00, \
99 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
100#define UVC_GUID_FORMAT_GBRG \
101 { 'G', 'B', 'R', 'G', 0x00, 0x00, 0x10, 0x00, \
102 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
103#define UVC_GUID_FORMAT_GRBG \
104 { 'G', 'R', 'B', 'G', 0x00, 0x00, 0x10, 0x00, \
105 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
106#define UVC_GUID_FORMAT_RGGB \
107 { 'R', 'G', 'G', 'B', 0x00, 0x00, 0x10, 0x00, \
108 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
109#define UVC_GUID_FORMAT_RGBP \
110 { 'R', 'G', 'B', 'P', 0x00, 0x00, 0x10, 0x00, \
111 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
112#define UVC_GUID_FORMAT_BGR3 \
113 { 0x7d, 0xeb, 0x36, 0xe4, 0x4f, 0x52, 0xce, 0x11, \
114 0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}
115#define UVC_GUID_FORMAT_M420 \
116 { 'M', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
117 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
118
119#define UVC_GUID_FORMAT_H264 \
120 { 'H', '2', '6', '4', 0x00, 0x00, 0x10, 0x00, \
121 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
122
123
124
125
126
127#define DRIVER_VERSION "1.1.1"
128
129
130#define UVC_URBS 5
131
132#define UVC_MAX_PACKETS 32
133
134#define UVC_MAX_STATUS_SIZE 16
135
136#define UVC_CTRL_CONTROL_TIMEOUT 300
137#define UVC_CTRL_STREAMING_TIMEOUT 5000
138
139
140#define UVC_MAX_CONTROL_MAPPINGS 1024
141#define UVC_MAX_CONTROL_MENU_ENTRIES 32
142
143
144#define UVC_QUIRK_STATUS_INTERVAL 0x00000001
145#define UVC_QUIRK_PROBE_MINMAX 0x00000002
146#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
147#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
148#define UVC_QUIRK_STREAM_NO_FID 0x00000010
149#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
150#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
151#define UVC_QUIRK_PROBE_DEF 0x00000100
152#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
153#define UVC_QUIRK_RESTORE_CTRLS_ON_INIT 0x00000400
154#define UVC_QUIRK_FORCE_Y8 0x00000800
155
156
157#define UVC_FMT_FLAG_COMPRESSED 0x00000001
158#define UVC_FMT_FLAG_STREAM 0x00000002
159
160
161
162
163
164struct uvc_device;
165
166
167
168
169struct uvc_control_info {
170 struct list_head mappings;
171
172 __u8 entity[16];
173 __u8 index;
174 __u8 selector;
175
176 __u16 size;
177 __u32 flags;
178};
179
180struct uvc_control_mapping {
181 struct list_head list;
182 struct list_head ev_subs;
183
184 __u32 id;
185 __u8 name[32];
186 __u8 entity[16];
187 __u8 selector;
188
189 __u8 size;
190 __u8 offset;
191 enum v4l2_ctrl_type v4l2_type;
192 __u32 data_type;
193
194 struct uvc_menu_info *menu_info;
195 __u32 menu_count;
196
197 __u32 master_id;
198 __s32 master_manual;
199 __u32 slave_ids[2];
200
201 __s32 (*get) (struct uvc_control_mapping *mapping, __u8 query,
202 const __u8 *data);
203 void (*set) (struct uvc_control_mapping *mapping, __s32 value,
204 __u8 *data);
205};
206
207struct uvc_control {
208 struct uvc_entity *entity;
209 struct uvc_control_info info;
210
211 __u8 index;
212
213 __u8 dirty:1,
214 loaded:1,
215 modified:1,
216 cached:1,
217 initialized:1;
218
219 __u8 *uvc_data;
220};
221
222struct uvc_format_desc {
223 char *name;
224 __u8 guid[16];
225 __u32 fcc;
226};
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243#define UVC_ENTITY_FLAG_DEFAULT (1 << 0)
244
245struct uvc_entity {
246 struct list_head list;
247 struct list_head chain;
248
249 unsigned int flags;
250
251 __u8 id;
252 __u16 type;
253 char name[64];
254
255
256 struct video_device *vdev;
257 struct v4l2_subdev subdev;
258 unsigned int num_pads;
259 unsigned int num_links;
260 struct media_pad *pads;
261
262 union {
263 struct {
264 __u16 wObjectiveFocalLengthMin;
265 __u16 wObjectiveFocalLengthMax;
266 __u16 wOcularFocalLength;
267 __u8 bControlSize;
268 __u8 *bmControls;
269 } camera;
270
271 struct {
272 __u8 bControlSize;
273 __u8 *bmControls;
274 __u8 bTransportModeSize;
275 __u8 *bmTransportModes;
276 } media;
277
278 struct {
279 } output;
280
281 struct {
282 __u16 wMaxMultiplier;
283 __u8 bControlSize;
284 __u8 *bmControls;
285 __u8 bmVideoStandards;
286 } processing;
287
288 struct {
289 } selector;
290
291 struct {
292 __u8 guidExtensionCode[16];
293 __u8 bNumControls;
294 __u8 bControlSize;
295 __u8 *bmControls;
296 __u8 *bmControlsType;
297 } extension;
298 };
299
300 __u8 bNrInPins;
301 __u8 *baSourceID;
302
303 unsigned int ncontrols;
304 struct uvc_control *controls;
305};
306
307struct uvc_frame {
308 __u8 bFrameIndex;
309 __u8 bmCapabilities;
310 __u16 wWidth;
311 __u16 wHeight;
312 __u32 dwMinBitRate;
313 __u32 dwMaxBitRate;
314 __u32 dwMaxVideoFrameBufferSize;
315 __u8 bFrameIntervalType;
316 __u32 dwDefaultFrameInterval;
317 __u32 *dwFrameInterval;
318};
319
320struct uvc_format {
321 __u8 type;
322 __u8 index;
323 __u8 bpp;
324 __u8 colorspace;
325 __u32 fcc;
326 __u32 flags;
327
328 char name[32];
329
330 unsigned int nframes;
331 struct uvc_frame *frame;
332};
333
334struct uvc_streaming_header {
335 __u8 bNumFormats;
336 __u8 bEndpointAddress;
337 __u8 bTerminalLink;
338 __u8 bControlSize;
339 __u8 *bmaControls;
340
341 __u8 bmInfo;
342 __u8 bStillCaptureMethod;
343 __u8 bTriggerSupport;
344 __u8 bTriggerUsage;
345};
346
347enum uvc_buffer_state {
348 UVC_BUF_STATE_IDLE = 0,
349 UVC_BUF_STATE_QUEUED = 1,
350 UVC_BUF_STATE_ACTIVE = 2,
351 UVC_BUF_STATE_READY = 3,
352 UVC_BUF_STATE_DONE = 4,
353 UVC_BUF_STATE_ERROR = 5,
354};
355
356struct uvc_buffer {
357 struct vb2_buffer buf;
358 struct list_head queue;
359
360 enum uvc_buffer_state state;
361 unsigned int error;
362
363 void *mem;
364 unsigned int length;
365 unsigned int bytesused;
366
367 u32 pts;
368};
369
370#define UVC_QUEUE_DISCONNECTED (1 << 0)
371#define UVC_QUEUE_DROP_CORRUPTED (1 << 1)
372
373struct uvc_video_queue {
374 struct vb2_queue queue;
375 struct mutex mutex;
376
377 unsigned int flags;
378 unsigned int buf_used;
379
380 spinlock_t irqlock;
381 struct list_head irqqueue;
382};
383
384struct uvc_video_chain {
385 struct uvc_device *dev;
386 struct list_head list;
387
388 struct list_head entities;
389 struct uvc_entity *processing;
390 struct uvc_entity *selector;
391
392 struct mutex ctrl_mutex;
393
394 struct v4l2_prio_state prio;
395 u32 caps;
396};
397
398struct uvc_stats_frame {
399 unsigned int size;
400 unsigned int first_data;
401
402 unsigned int nb_packets;
403 unsigned int nb_empty;
404 unsigned int nb_invalid;
405 unsigned int nb_errors;
406
407 unsigned int nb_pts;
408 unsigned int nb_pts_diffs;
409 unsigned int last_pts_diff;
410 bool has_initial_pts;
411 bool has_early_pts;
412 u32 pts;
413
414 unsigned int nb_scr;
415 unsigned int nb_scr_diffs;
416 u16 scr_sof;
417 u32 scr_stc;
418};
419
420struct uvc_stats_stream {
421 struct timespec start_ts;
422 struct timespec stop_ts;
423
424 unsigned int nb_frames;
425
426 unsigned int nb_packets;
427 unsigned int nb_empty;
428 unsigned int nb_invalid;
429 unsigned int nb_errors;
430
431 unsigned int nb_pts_constant;
432 unsigned int nb_pts_early;
433 unsigned int nb_pts_initial;
434
435 unsigned int nb_scr_count_ok;
436 unsigned int nb_scr_diffs_ok;
437 unsigned int scr_sof_count;
438 unsigned int scr_sof;
439 unsigned int min_sof;
440 unsigned int max_sof;
441};
442
443struct uvc_streaming {
444 struct list_head list;
445 struct uvc_device *dev;
446 struct video_device vdev;
447 struct uvc_video_chain *chain;
448 atomic_t active;
449
450 struct usb_interface *intf;
451 int intfnum;
452 __u16 maxpsize;
453
454 struct uvc_streaming_header header;
455 enum v4l2_buf_type type;
456
457 unsigned int nformats;
458 struct uvc_format *format;
459
460 struct uvc_streaming_control ctrl;
461 struct uvc_format *def_format;
462 struct uvc_format *cur_format;
463 struct uvc_frame *cur_frame;
464
465
466
467
468 struct mutex mutex;
469
470
471 unsigned int frozen : 1;
472 struct uvc_video_queue queue;
473 void (*decode) (struct urb *urb, struct uvc_streaming *video,
474 struct uvc_buffer *buf);
475
476
477 struct {
478 __u8 header[256];
479 unsigned int header_size;
480 int skip_payload;
481 __u32 payload_size;
482 __u32 max_payload_size;
483 } bulk;
484
485 struct urb *urb[UVC_URBS];
486 char *urb_buffer[UVC_URBS];
487 dma_addr_t urb_dma[UVC_URBS];
488 unsigned int urb_size;
489
490 __u32 sequence;
491 __u8 last_fid;
492
493
494 struct dentry *debugfs_dir;
495 struct {
496 struct uvc_stats_frame frame;
497 struct uvc_stats_stream stream;
498 } stats;
499
500
501 struct uvc_clock {
502 struct uvc_clock_sample {
503 u32 dev_stc;
504 u16 dev_sof;
505 struct timespec host_ts;
506 u16 host_sof;
507 } *samples;
508
509 unsigned int head;
510 unsigned int count;
511 unsigned int size;
512
513 u16 last_sof;
514 u16 sof_offset;
515
516 spinlock_t lock;
517 } clock;
518};
519
520struct uvc_device {
521 struct usb_device *udev;
522 struct usb_interface *intf;
523 unsigned long warnings;
524 __u32 quirks;
525 int intfnum;
526 char name[32];
527
528 struct mutex lock;
529 unsigned int users;
530 atomic_t nmappings;
531
532
533#ifdef CONFIG_MEDIA_CONTROLLER
534 struct media_device mdev;
535#endif
536 struct v4l2_device vdev;
537 __u16 uvc_version;
538 __u32 clock_frequency;
539
540 struct list_head entities;
541 struct list_head chains;
542
543
544 struct list_head streams;
545 atomic_t nstreams;
546
547
548 struct usb_host_endpoint *int_ep;
549 struct urb *int_urb;
550 __u8 *status;
551 struct input_dev *input;
552 char input_phys[64];
553};
554
555enum uvc_handle_state {
556 UVC_HANDLE_PASSIVE = 0,
557 UVC_HANDLE_ACTIVE = 1,
558};
559
560struct uvc_fh {
561 struct v4l2_fh vfh;
562 struct uvc_video_chain *chain;
563 struct uvc_streaming *stream;
564 enum uvc_handle_state state;
565};
566
567struct uvc_driver {
568 struct usb_driver driver;
569};
570
571
572
573
574
575#define UVC_TRACE_PROBE (1 << 0)
576#define UVC_TRACE_DESCR (1 << 1)
577#define UVC_TRACE_CONTROL (1 << 2)
578#define UVC_TRACE_FORMAT (1 << 3)
579#define UVC_TRACE_CAPTURE (1 << 4)
580#define UVC_TRACE_CALLS (1 << 5)
581#define UVC_TRACE_FRAME (1 << 7)
582#define UVC_TRACE_SUSPEND (1 << 8)
583#define UVC_TRACE_STATUS (1 << 9)
584#define UVC_TRACE_VIDEO (1 << 10)
585#define UVC_TRACE_STATS (1 << 11)
586#define UVC_TRACE_CLOCK (1 << 12)
587
588#define UVC_WARN_MINMAX 0
589#define UVC_WARN_PROBE_DEF 1
590#define UVC_WARN_XU_GET_RES 2
591
592extern unsigned int uvc_clock_param;
593extern unsigned int uvc_no_drop_param;
594extern unsigned int uvc_trace_param;
595extern unsigned int uvc_timeout_param;
596
597#define uvc_trace(flag, msg...) \
598 do { \
599 if (uvc_trace_param & flag) \
600 printk(KERN_DEBUG "uvcvideo: " msg); \
601 } while (0)
602
603#define uvc_warn_once(dev, warn, msg...) \
604 do { \
605 if (!test_and_set_bit(warn, &dev->warnings)) \
606 printk(KERN_INFO "uvcvideo: " msg); \
607 } while (0)
608
609#define uvc_printk(level, msg...) \
610 printk(level "uvcvideo: " msg)
611
612
613
614
615
616
617extern struct uvc_driver uvc_driver;
618
619extern struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
620
621
622extern int uvc_queue_init(struct uvc_video_queue *queue,
623 enum v4l2_buf_type type, int drop_corrupted);
624extern void uvc_queue_release(struct uvc_video_queue *queue);
625extern int uvc_request_buffers(struct uvc_video_queue *queue,
626 struct v4l2_requestbuffers *rb);
627extern int uvc_query_buffer(struct uvc_video_queue *queue,
628 struct v4l2_buffer *v4l2_buf);
629extern int uvc_create_buffers(struct uvc_video_queue *queue,
630 struct v4l2_create_buffers *v4l2_cb);
631extern int uvc_queue_buffer(struct uvc_video_queue *queue,
632 struct v4l2_buffer *v4l2_buf);
633extern int uvc_export_buffer(struct uvc_video_queue *queue,
634 struct v4l2_exportbuffer *exp);
635extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
636 struct v4l2_buffer *v4l2_buf, int nonblocking);
637extern int uvc_queue_streamon(struct uvc_video_queue *queue,
638 enum v4l2_buf_type type);
639extern int uvc_queue_streamoff(struct uvc_video_queue *queue,
640 enum v4l2_buf_type type);
641extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
642extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
643 struct uvc_buffer *buf);
644extern int uvc_queue_mmap(struct uvc_video_queue *queue,
645 struct vm_area_struct *vma);
646extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
647 struct file *file, poll_table *wait);
648#ifndef CONFIG_MMU
649extern unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
650 unsigned long pgoff);
651#endif
652extern int uvc_queue_allocated(struct uvc_video_queue *queue);
653static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
654{
655 return vb2_is_streaming(&queue->queue);
656}
657
658
659extern const struct v4l2_ioctl_ops uvc_ioctl_ops;
660extern const struct v4l2_file_operations uvc_fops;
661
662
663extern int uvc_mc_register_entities(struct uvc_video_chain *chain);
664extern void uvc_mc_cleanup_entity(struct uvc_entity *entity);
665
666
667extern int uvc_video_init(struct uvc_streaming *stream);
668extern int uvc_video_suspend(struct uvc_streaming *stream);
669extern int uvc_video_resume(struct uvc_streaming *stream, int reset);
670extern int uvc_video_enable(struct uvc_streaming *stream, int enable);
671extern int uvc_probe_video(struct uvc_streaming *stream,
672 struct uvc_streaming_control *probe);
673extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
674 __u8 intfnum, __u8 cs, void *data, __u16 size);
675void uvc_video_clock_update(struct uvc_streaming *stream,
676 struct v4l2_buffer *v4l2_buf,
677 struct uvc_buffer *buf);
678
679
680extern int uvc_status_init(struct uvc_device *dev);
681extern void uvc_status_cleanup(struct uvc_device *dev);
682extern int uvc_status_start(struct uvc_device *dev, gfp_t flags);
683extern void uvc_status_stop(struct uvc_device *dev);
684
685
686extern const struct v4l2_subscribed_event_ops uvc_ctrl_sub_ev_ops;
687
688extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
689 struct v4l2_queryctrl *v4l2_ctrl);
690extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
691 struct v4l2_querymenu *query_menu);
692
693extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
694 const struct uvc_control_mapping *mapping);
695extern int uvc_ctrl_init_device(struct uvc_device *dev);
696extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
697extern int uvc_ctrl_restore_values(struct uvc_device *dev);
698
699extern int uvc_ctrl_begin(struct uvc_video_chain *chain);
700extern int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
701 const struct v4l2_ext_control *xctrls,
702 unsigned int xctrls_count);
703static inline int uvc_ctrl_commit(struct uvc_fh *handle,
704 const struct v4l2_ext_control *xctrls,
705 unsigned int xctrls_count)
706{
707 return __uvc_ctrl_commit(handle, 0, xctrls, xctrls_count);
708}
709static inline int uvc_ctrl_rollback(struct uvc_fh *handle)
710{
711 return __uvc_ctrl_commit(handle, 1, NULL, 0);
712}
713
714extern int uvc_ctrl_get(struct uvc_video_chain *chain,
715 struct v4l2_ext_control *xctrl);
716extern int uvc_ctrl_set(struct uvc_video_chain *chain,
717 struct v4l2_ext_control *xctrl);
718
719extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
720 struct uvc_xu_control_query *xqry);
721
722
723extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
724 unsigned int n_terms, unsigned int threshold);
725extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
726 uint32_t denominator);
727extern struct usb_host_endpoint *uvc_find_endpoint(
728 struct usb_host_interface *alts, __u8 epaddr);
729
730
731void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
732 struct uvc_buffer *buf);
733
734
735int uvc_debugfs_init(void);
736void uvc_debugfs_cleanup(void);
737int uvc_debugfs_init_stream(struct uvc_streaming *stream);
738void uvc_debugfs_cleanup_stream(struct uvc_streaming *stream);
739
740size_t uvc_video_stats_dump(struct uvc_streaming *stream, char *buf,
741 size_t size);
742
743#endif
744
