aboutsummaryrefslogtreecommitdiffstats
path: root/include/media/v4l2-ioctl.h
blob: 4944a421074cbc5038a60c3bd2800bccf677c82b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
/*
 *
 *	V 4 L 2   D R I V E R   H E L P E R   A P I
 *
 * Moved from videodev2.h
 *
 *	Some commonly needed functions for drivers (v4l2-common.o module)
 */
#ifndef _V4L2_IOCTL_H
#define _V4L2_IOCTL_H

#include <linux/poll.h>
#include <linux/fs.h>
#include <linux/mutex.h>
#include <linux/sched/signal.h>
#include <linux/compiler.h> /* need __user */
#include <linux/videodev2.h>

struct v4l2_fh;

/**
 * struct v4l2_ioctl_ops - describe operations for each V4L2 ioctl
 *
 * @vidioc_querycap: pointer to the function that implements
 *	:ref:`VIDIOC_QUERYCAP <vidioc_querycap>` ioctl
 * @vidioc_enum_fmt_vid_cap: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 *	for video capture in single plane mode
 * @vidioc_enum_fmt_vid_overlay: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 *	for video overlay
 * @vidioc_enum_fmt_vid_out: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 *	for video output in single plane mode
 * @vidioc_enum_fmt_vid_cap_mplane: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 *	for video capture in multiplane mode
 * @vidioc_enum_fmt_vid_out_mplane: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 *	for video output in multiplane mode
 * @vidioc_enum_fmt_sdr_cap: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 *	for Software Defined Radio capture
 * @vidioc_enum_fmt_sdr_out: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 *	for Software Defined Radio output
 * @vidioc_enum_fmt_meta_cap: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 *	for metadata capture
 * @vidioc_g_fmt_vid_cap: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video capture
 *	in single plane mode
 * @vidioc_g_fmt_vid_overlay: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video overlay
 * @vidioc_g_fmt_vid_out: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video out
 *	in single plane mode
 * @vidioc_g_fmt_vid_out_overlay: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video overlay output
 * @vidioc_g_fmt_vbi_cap: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
 * @vidioc_g_fmt_vbi_out: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
 * @vidioc_g_fmt_sliced_vbi_cap: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI capture
 * @vidioc_g_fmt_sliced_vbi_out: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
 * @vidioc_g_fmt_vid_cap_mplane: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video capture
 *	in multiple plane mode
 * @vidioc_g_fmt_vid_out_mplane: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video out
 *	in multiplane plane mode
 * @vidioc_g_fmt_sdr_cap: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 *	Radio capture
 * @vidioc_g_fmt_sdr_out: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 *	Radio output
 * @vidioc_g_fmt_meta_cap: pointer to the function that implements
 *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
 * @vidioc_s_fmt_vid_cap: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video capture
 *	in single plane mode
 * @vidioc_s_fmt_vid_overlay: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video overlay
 * @vidioc_s_fmt_vid_out: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video out
 *	in single plane mode
 * @vidioc_s_fmt_vid_out_overlay: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video overlay output
 * @vidioc_s_fmt_vbi_cap: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
 * @vidioc_s_fmt_vbi_out: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
 * @vidioc_s_fmt_sliced_vbi_cap: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI capture
 * @vidioc_s_fmt_sliced_vbi_out: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
 * @vidioc_s_fmt_vid_cap_mplane: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video capture
 *	in multiple plane mode
 * @vidioc_s_fmt_vid_out_mplane: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video out
 *	in multiplane plane mode
 * @vidioc_s_fmt_sdr_cap: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 *	Radio capture
 * @vidioc_s_fmt_sdr_out: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 *	Radio output
 * @vidioc_s_fmt_meta_cap: pointer to the function that implements
 *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
 * @vidioc_try_fmt_vid_cap: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video capture
 *	in single plane mode
 * @vidioc_try_fmt_vid_overlay: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video overlay
 * @vidioc_try_fmt_vid_out: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video out
 *	in single plane mode
 * @vidioc_try_fmt_vid_out_overlay: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video overlay
 *	output
 * @vidioc_try_fmt_vbi_cap: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
 * @vidioc_try_fmt_vbi_out: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
 * @vidioc_try_fmt_sliced_vbi_cap: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI
 *	capture
 * @vidioc_try_fmt_sliced_vbi_out: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
 * @vidioc_try_fmt_vid_cap_mplane: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video capture
 *	in multiple plane mode
 * @vidioc_try_fmt_vid_out_mplane: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video out
 *	in multiplane plane mode
 * @vidioc_try_fmt_sdr_cap: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 *	Radio capture
 * @vidioc_try_fmt_sdr_out: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 *	Radio output
 * @vidioc_try_fmt_meta_cap: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
 * @vidioc_reqbufs: pointer to the function that implements
 *	:ref:`VIDIOC_REQBUFS <vidioc_reqbufs>` ioctl
 * @vidioc_querybuf: pointer to the function that implements
 *	:ref:`VIDIOC_QUERYBUF <vidioc_querybuf>` ioctl
 * @vidioc_qbuf: pointer to the function that implements
 *	:ref:`VIDIOC_QBUF <vidioc_qbuf>` ioctl
 * @vidioc_expbuf: pointer to the function that implements
 *	:ref:`VIDIOC_EXPBUF <vidioc_expbuf>` ioctl
 * @vidioc_dqbuf: pointer to the function that implements
 *	:ref:`VIDIOC_DQBUF <vidioc_qbuf>` ioctl
 * @vidioc_create_bufs: pointer to the function that implements
 *	:ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
 * @vidioc_prepare_buf: pointer to the function that implements
 *	:ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
 * @vidioc_ext_querybuf: pointer to the function that implements
 *	:ref:`VIDIOC_EXT_QUERYBUF <vidioc_querybuf>` ioctl
 * @vidioc_ext_qbuf: pointer to the function that implements
 *	:ref:`VIDIOC_EXT_QBUF <vidioc_qbuf>` ioctl
 * @vidioc_ext_dqbuf: pointer to the function that implements
 *	:ref:`VIDIOC_EXT_DQBUF <vidioc_qbuf>` ioctl
 * @vidioc_ext_prepare_buf: pointer to the function that implements
 *	:ref:`VIDIOC_EXT_PREPARE_BUF <vidioc_prepare_buf>` ioctl
 * @vidioc_overlay: pointer to the function that implements
 *	:ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
 * @vidioc_g_fbuf: pointer to the function that implements
 *	:ref:`VIDIOC_G_FBUF <vidioc_g_fbuf>` ioctl
 * @vidioc_s_fbuf: pointer to the function that implements
 *	:ref:`VIDIOC_S_FBUF <vidioc_g_fbuf>` ioctl
 * @vidioc_streamon: pointer to the function that implements
 *	:ref:`VIDIOC_STREAMON <vidioc_streamon>` ioctl
 * @vidioc_streamoff: pointer to the function that implements
 *	:ref:`VIDIOC_STREAMOFF <vidioc_streamon>` ioctl
 * @vidioc_g_std: pointer to the function that implements
 *	:ref:`VIDIOC_G_STD <vidioc_g_std>` ioctl
 * @vidioc_s_std: pointer to the function that implements
 *	:ref:`VIDIOC_S_STD <vidioc_g_std>` ioctl
 * @vidioc_querystd: pointer to the function that implements
 *	:ref:`VIDIOC_QUERYSTD <vidioc_querystd>` ioctl
 * @vidioc_enum_input: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_INPUT <vidioc_g_input>` ioctl
 * @vidioc_g_input: pointer to the function that implements
 *	:ref:`VIDIOC_G_INPUT <vidioc_g_input>` ioctl
 * @vidioc_s_input: pointer to the function that implements
 *	:ref:`VIDIOC_S_INPUT <vidioc_g_input>` ioctl
 * @vidioc_enum_output: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_OUTPUT <vidioc_g_output>` ioctl
 * @vidioc_g_output: pointer to the function that implements
 *	:ref:`VIDIOC_G_OUTPUT <vidioc_g_output>` ioctl
 * @vidioc_s_output: pointer to the function that implements
 *	:ref:`VIDIOC_S_OUTPUT <vidioc_g_output>` ioctl
 * @vidioc_queryctrl: pointer to the function that implements
 *	:ref:`VIDIOC_QUERYCTRL <vidioc_queryctrl>` ioctl
 * @vidioc_query_ext_ctrl: pointer to the function that implements
 *	:ref:`VIDIOC_QUERY_EXT_CTRL <vidioc_queryctrl>` ioctl
 * @vidioc_g_ctrl: pointer to the function that implements
 *	:ref:`VIDIOC_G_CTRL <vidioc_g_ctrl>` ioctl
 * @vidioc_s_ctrl: pointer to the function that implements
 *	:ref:`VIDIOC_S_CTRL <vidioc_g_ctrl>` ioctl
 * @vidioc_g_ext_ctrls: pointer to the function that implements
 *	:ref:`VIDIOC_G_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
 * @vidioc_s_ext_ctrls: pointer to the function that implements
 *	:ref:`VIDIOC_S_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
 * @vidioc_try_ext_ctrls: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
 * @vidioc_querymenu: pointer to the function that implements
 *	:ref:`VIDIOC_QUERYMENU <vidioc_queryctrl>` ioctl
 * @vidioc_enumaudio: pointer to the function that implements
 *	:ref:`VIDIOC_ENUMAUDIO <vidioc_enumaudio>` ioctl
 * @vidioc_g_audio: pointer to the function that implements
 *	:ref:`VIDIOC_G_AUDIO <vidioc_g_audio>` ioctl
 * @vidioc_s_audio: pointer to the function that implements
 *	:ref:`VIDIOC_S_AUDIO <vidioc_g_audio>` ioctl
 * @vidioc_enumaudout: pointer to the function that implements
 *	:ref:`VIDIOC_ENUMAUDOUT <vidioc_enumaudout>` ioctl
 * @vidioc_g_audout: pointer to the function that implements
 *	:ref:`VIDIOC_G_AUDOUT <vidioc_g_audout>` ioctl
 * @vidioc_s_audout: pointer to the function that implements
 *	:ref:`VIDIOC_S_AUDOUT <vidioc_g_audout>` ioctl
 * @vidioc_g_modulator: pointer to the function that implements
 *	:ref:`VIDIOC_G_MODULATOR <vidioc_g_modulator>` ioctl
 * @vidioc_s_modulator: pointer to the function that implements
 *	:ref:`VIDIOC_S_MODULATOR <vidioc_g_modulator>` ioctl
 * @vidioc_cropcap: pointer to the function that implements
 *	:ref:`VIDIOC_CROPCAP <vidioc_cropcap>` ioctl
 * @vidioc_g_crop: pointer to the function that implements
 *	:ref:`VIDIOC_G_CROP <vidioc_g_crop>` ioctl
 * @vidioc_s_crop: pointer to the function that implements
 *	:ref:`VIDIOC_S_CROP <vidioc_g_crop>` ioctl
 * @vidioc_g_selection: pointer to the function that implements
 *	:ref:`VIDIOC_G_SELECTION <vidioc_g_selection>` ioctl
 * @vidioc_s_selection: pointer to the function that implements
 *	:ref:`VIDIOC_S_SELECTION <vidioc_g_selection>` ioctl
 * @vidioc_g_jpegcomp: pointer to the function that implements
 *	:ref:`VIDIOC_G_JPEGCOMP <vidioc_g_jpegcomp>` ioctl
 * @vidioc_s_jpegcomp: pointer to the function that implements
 *	:ref:`VIDIOC_S_JPEGCOMP <vidioc_g_jpegcomp>` ioctl
 * @vidioc_g_enc_index: pointer to the function that implements
 *	:ref:`VIDIOC_G_ENC_INDEX <vidioc_g_enc_index>` ioctl
 * @vidioc_encoder_cmd: pointer to the function that implements
 *	:ref:`VIDIOC_ENCODER_CMD <vidioc_encoder_cmd>` ioctl
 * @vidioc_try_encoder_cmd: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_ENCODER_CMD <vidioc_encoder_cmd>` ioctl
 * @vidioc_decoder_cmd: pointer to the function that implements
 *	:ref:`VIDIOC_DECODER_CMD <vidioc_decoder_cmd>` ioctl
 * @vidioc_try_decoder_cmd: pointer to the function that implements
 *	:ref:`VIDIOC_TRY_DECODER_CMD <vidioc_decoder_cmd>` ioctl
 * @vidioc_g_parm: pointer to the function that implements
 *	:ref:`VIDIOC_G_PARM <vidioc_g_parm>` ioctl
 * @vidioc_s_parm: pointer to the function that implements
 *	:ref:`VIDIOC_S_PARM <vidioc_g_parm>` ioctl
 * @vidioc_g_tuner: pointer to the function that implements
 *	:ref:`VIDIOC_G_TUNER <vidioc_g_tuner>` ioctl
 * @vidioc_s_tuner: pointer to the function that implements
 *	:ref:`VIDIOC_S_TUNER <vidioc_g_tuner>` ioctl
 * @vidioc_g_frequency: pointer to the function that implements
 *	:ref:`VIDIOC_G_FREQUENCY <vidioc_g_frequency>` ioctl
 * @vidioc_s_frequency: pointer to the function that implements
 *	:ref:`VIDIOC_S_FREQUENCY <vidioc_g_frequency>` ioctl
 * @vidioc_enum_freq_bands: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FREQ_BANDS <vidioc_enum_freq_bands>` ioctl
 * @vidioc_g_sliced_vbi_cap: pointer to the function that implements
 *	:ref:`VIDIOC_G_SLICED_VBI_CAP <vidioc_g_sliced_vbi_cap>` ioctl
 * @vidioc_log_status: pointer to the function that implements
 *	:ref:`VIDIOC_LOG_STATUS <vidioc_log_status>` ioctl
 * @vidioc_s_hw_freq_seek: pointer to the function that implements
 *	:ref:`VIDIOC_S_HW_FREQ_SEEK <vidioc_s_hw_freq_seek>` ioctl
 * @vidioc_g_register: pointer to the function that implements
 *	:ref:`VIDIOC_DBG_G_REGISTER <vidioc_dbg_g_register>` ioctl
 * @vidioc_s_register: pointer to the function that implements
 *	:ref:`VIDIOC_DBG_S_REGISTER <vidioc_dbg_g_register>` ioctl
 * @vidioc_g_chip_info: pointer to the function that implements
 *	:ref:`VIDIOC_DBG_G_CHIP_INFO <vidioc_dbg_g_chip_info>` ioctl
 * @vidioc_enum_framesizes: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FRAMESIZES <vidioc_enum_framesizes>` ioctl
 * @vidioc_enum_frameintervals: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_FRAMEINTERVALS <vidioc_enum_frameintervals>` ioctl
 * @vidioc_s_dv_timings: pointer to the function that implements
 *	:ref:`VIDIOC_S_DV_TIMINGS <vidioc_g_dv_timings>` ioctl
 * @vidioc_g_dv_timings: pointer to the function that implements
 *	:ref:`VIDIOC_G_DV_TIMINGS <vidioc_g_dv_timings>` ioctl
 * @vidioc_query_dv_timings: pointer to the function that implements
 *	:ref:`VIDIOC_QUERY_DV_TIMINGS <vidioc_query_dv_timings>` ioctl
 * @vidioc_enum_dv_timings: pointer to the function that implements
 *	:ref:`VIDIOC_ENUM_DV_TIMINGS <vidioc_enum_dv_timings>` ioctl
 * @vidioc_dv_timings_cap: pointer to the function that implements
 *	:ref:`VIDIOC_DV_TIMINGS_CAP <vidioc_dv_timings_cap>` ioctl
 * @vidioc_g_edid: pointer to the function that implements
 *	:ref:`VIDIOC_G_EDID <vidioc_g_edid>` ioctl
 * @vidioc_s_edid: pointer to the function that implements
 *	:ref:`VIDIOC_S_EDID <vidioc_g_edid>` ioctl
 * @vidioc_subscribe_event: pointer to the function that implements
 *	:ref:`VIDIOC_SUBSCRIBE_EVENT <vidioc_subscribe_event>` ioctl
 * @vidioc_unsubscribe_event: pointer to the function that implements
 *	:ref:`VIDIOC_UNSUBSCRIBE_EVENT <vidioc_unsubscribe_event>` ioctl
 * @vidioc_default: pointed used to allow other ioctls
 */
struct v4l2_ioctl_ops {
	/* ioctl callbacks */

	/* VIDIOC_QUERYCAP handler */
	int (*vidioc_querycap)(struct file *file, void *fh,
			       struct v4l2_capability *cap);

	/* VIDIOC_ENUM_FMT handlers */
	int (*vidioc_enum_fmt_vid_cap)(struct file *file, void *fh,
				       struct v4l2_fmtdesc *f);
	int (*vidioc_enum_fmt_vid_overlay)(struct file *file, void *fh,
					   struct v4l2_fmtdesc *f);
	int (*vidioc_enum_fmt_vid_out)(struct file *file, void *fh,
				       struct v4l2_fmtdesc *f);
	int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh,
					      struct v4l2_fmtdesc *f);
	int (*vidioc_enum_fmt_vid_out_mplane)(struct file *file, void *fh,
					      struct v4l2_fmtdesc *f);
	int (*vidioc_enum_fmt_sdr_cap)(struct file *file, void *fh,
				       struct v4l2_fmtdesc *f);
	int (*vidioc_enum_fmt_sdr_out)(struct file *file, void *fh,
				       struct v4l2_fmtdesc *f);
	int (*vidioc_enum_fmt_meta_cap)(struct file *file, void *fh,
					struct v4l2_fmtdesc *f);

	/* VIDIOC_G_FMT handlers */
	int (*vidioc_g_fmt_vid_cap)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
					struct v4l2_format *f);
	int (*vidioc_g_fmt_vid_out)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
					    struct v4l2_format *f);
	int (*vidioc_g_fmt_vbi_cap)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_g_fmt_vbi_out)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
					   struct v4l2_format *f);
	int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
					   struct v4l2_format *f);
	int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
					   struct v4l2_format *f);
	int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh,
					   struct v4l2_format *f);
	int (*vidioc_g_fmt_sdr_cap)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_g_fmt_sdr_out)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_g_fmt_meta_cap)(struct file *file, void *fh,
				     struct v4l2_format *f);

	/* VIDIOC_S_FMT handlers */
	int (*vidioc_s_fmt_vid_cap)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
					struct v4l2_format *f);
	int (*vidioc_s_fmt_vid_out)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
					    struct v4l2_format *f);
	int (*vidioc_s_fmt_vbi_cap)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_s_fmt_vbi_out)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
					   struct v4l2_format *f);
	int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
					   struct v4l2_format *f);
	int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
					   struct v4l2_format *f);
	int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh,
					   struct v4l2_format *f);
	int (*vidioc_s_fmt_sdr_cap)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_s_fmt_sdr_out)(struct file *file, void *fh,
				    struct v4l2_format *f);
	int (*vidioc_s_fmt_meta_cap)(struct file *file, void *fh,
				     struct v4l2_format *f);

	/* VIDIOC_TRY_FMT handlers */
	int (*vidioc_try_fmt_vid_cap)(struct file *file, void *fh,
				      struct v4l2_format *f);
	int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
					  struct v4l2_format *f);
	int (*vidioc_try_fmt_vid_out)(struct file *file, void *fh,
				      struct v4l2_format *f);
	int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
					     struct v4l2_format *f);
	int (*vidioc_try_fmt_vbi_cap)(struct file *file, void *fh,
				      struct v4l2_format *f);
	int (*vidioc_try_fmt_vbi_out)(struct file *file, void *fh,
				      struct v4l2_format *f);
	int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
					     struct v4l2_format *f);
	int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
					     struct v4l2_format *f);
	int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
					     struct v4l2_format *f);
	int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh,
					     struct v4l2_format *f);
	int (*vidioc_try_fmt_sdr_cap)(struct file *file, void *fh,
				      struct v4l2_format *f);
	int (*vidioc_try_fmt_sdr_out)(struct file *file, void *fh,
				      struct v4l2_format *f);
	int (*vidioc_try_fmt_meta_cap)(struct file *file, void *fh,
				       struct v4l2_format *f);

	/* Buffer handlers */
	int (*vidioc_reqbufs)(struct file *file, void *fh,
			      struct v4l2_requestbuffers *b);
	int (*vidioc_querybuf)(struct file *file, void *fh,
			       struct v4l2_buffer *b);
	int (*vidioc_qbuf)(struct file *file, void *fh,
			   struct v4l2_buffer *b);
	int (*vidioc_expbuf)(struct file *file, void *fh,
			     struct v4l2_exportbuffer *e);
	int (*vidioc_dqbuf)(struct file *file, void *fh,
			    struct v4l2_buffer *b);

	int (*vidioc_create_bufs)(struct file *file, void *fh,
				  struct v4l2_create_buffers *b);
	int (*vidioc_prepare_buf)(struct file *file, void *fh,
				  struct v4l2_buffer *b);

	int (*vidioc_ext_querybuf)(struct file *file, void *fh,
				   struct v4l2_ext_buffer *b);
	int (*vidioc_ext_qbuf)(struct file *file, void *fh,
			       struct v4l2_ext_buffer *b);
	int (*vidioc_ext_dqbuf)(struct file *file, void *fh,
				struct v4l2_ext_buffer *b);
	int (*vidioc_ext_prepare_buf)(struct file *file, void *fh,
				      struct v4l2_ext_buffer *b);

	int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
	int (*vidioc_g_fbuf)(struct file *file, void *fh,
			     struct v4l2_framebuffer *a);
	int (*vidioc_s_fbuf)(struct file *file, void *fh,
			     const struct v4l2_framebuffer *a);

		/* Stream on/off */
	int (*vidioc_streamon)(struct file *file, void *fh,
			       enum v4l2_buf_type i);
	int (*vidioc_streamoff)(struct file *file, void *fh,
				enum v4l2_buf_type i);

		/*
		 * Standard handling
		 *
		 * Note: ENUMSTD is handled by videodev.c
		 */
	int (*vidioc_g_std)(struct file *file, void *fh, v4l2_std_id *norm);
	int (*vidioc_s_std)(struct file *file, void *fh, v4l2_std_id norm);
	int (*vidioc_querystd)(struct file *file, void *fh, v4l2_std_id *a);

		/* Input handling */
	int (*vidioc_enum_input)(struct file *file, void *fh,
				 struct v4l2_input *inp);
	int (*vidioc_g_input)(struct file *file, void *fh, unsigned int *i);
	int (*vidioc_s_input)(struct file *file, void *fh, unsigned int i);

		/* Output handling */
	int (*vidioc_enum_output)(struct file *file, void *fh,
				  struct v4l2_output *a);
	int (*vidioc_g_output)(struct file *file, void *fh, unsigned int *i);
	int (*vidioc_s_output)(struct file *file, void *fh, unsigned int i);

		/* Control handling */
	int (*vidioc_queryctrl)(struct file *file, void *fh,
				struct v4l2_queryctrl *a);
	int (*vidioc_query_ext_ctrl)(struct file *file, void *fh,
				     struct v4l2_query_ext_ctrl *a);
	int (*vidioc_g_ctrl)(struct file *file, void *fh,
			     struct v4l2_control *a);
	int (*vidioc_s_ctrl)(struct file *file, void *fh,
			     struct v4l2_control *a);
	int (*vidioc_g_ext_ctrls)(struct file *file, void *fh,
				  struct v4l2_ext_controls *a);
	int (*vidioc_s_ext_ctrls)(struct file *file, void *fh,
				  struct v4l2_ext_controls *a);
	int (*vidioc_try_ext_ctrls)(struct file *file, void *fh,
				    struct v4l2_ext_controls *a);
	int (*vidioc_querymenu)(struct file *file, void *fh,
				struct v4l2_querymenu *a);

	/* Audio ioctls */
	int (*vidioc_enumaudio)(struct file *file, void *fh,
				struct v4l2_audio *a);
	int (*vidioc_g_audio)(struct file *file, void *fh,
			      struct v4l2_audio *a);
	int (*vidioc_s_audio)(struct file *file, void *fh,
			      const struct v4l2_audio *a);

	/* Audio out ioctls */
	int (*vidioc_enumaudout)(struct file *file, void *fh,
				 struct v4l2_audioout *a);
	int (*vidioc_g_audout)(struct file *file, void *fh,
			       struct v4l2_audioout *a);
	int (*vidioc_s_audout)(struct file *file, void *fh,
			       const struct v4l2_audioout *a);
	int (*vidioc_g_modulator)(struct file *file, void *fh,
				  struct v4l2_modulator *a);
	int (*vidioc_s_modulator)(struct file *file, void *fh,
				  const struct v4l2_modulator *a);
	/* Crop ioctls */
	int (*vidioc_cropcap)(struct file *file, void *fh,
			      struct v4l2_cropcap *a);
	int (*vidioc_g_crop)(struct file *file, void *fh,
			     struct v4l2_crop *a);
	int (*vidioc_s_crop)(struct file *file, void *fh,
			     const struct v4l2_crop *a);
	int (*vidioc_g_selection)(struct file *file, void *fh,
				  struct v4l2_selection *s);
	int (*vidioc_s_selection)(struct file *file, void *fh,
				  struct v4l2_selection *s);
	/* Compression ioctls */
	int (*vidioc_g_jpegcomp)(struct file *file, void *fh,
				 struct v4l2_jpegcompression *a);
	int (*vidioc_s_jpegcomp)(struct file *file, void *fh,
				 const struct v4l2_jpegcompression *a);
	int (*vidioc_g_enc_index)(struct file *file, void *fh,
				  struct v4l2_enc_idx *a);
	int (*vidioc_encoder_cmd)(struct file *file, void *fh,
				  struct v4l2_encoder_cmd *a);
	int (*vidioc_try_encoder_cmd)(struct file *file, void *fh,
				      struct v4l2_encoder_cmd *a);
	int (*vidioc_decoder_cmd)(struct file *file, void *fh,
				  struct v4l2_decoder_cmd *a);
	int (*vidioc_try_decoder_cmd)(struct file *file, void *fh,
				      struct v4l2_decoder_cmd *a);

	/* Stream type-dependent parameter ioctls */
	int (*vidioc_g_parm)(struct file *file, void *fh,
			     struct v4l2_streamparm *a);
	int (*vidioc_s_parm)(struct file *file, void *fh,
			     struct v4l2_streamparm *a);

	/* Tuner ioctls */
	int (*vidioc_g_tuner)(struct file *file, void *fh,
			      struct v4l2_tuner *a);
	int (*vidioc_s_tuner)(struct file *file, void *fh,
			      const struct v4l2_tuner *a);
	int (*vidioc_g_frequency)(struct file *file, void *fh,
				  struct v4l2_frequency *a);
	int (*vidioc_s_frequency)(struct file *file, void *fh,
				  const struct v4l2_frequency *a);
	int (*vidioc_enum_freq_bands)(struct file *file, void *fh,
				      struct v4l2_frequency_band *band);

	/* Sliced VBI cap */
	int (*vidioc_g_sliced_vbi_cap)(struct file *file, void *fh,
				       struct v4l2_sliced_vbi_cap *a);

	/* Log status ioctl */
	int (*vidioc_log_status)(struct file *file, void *fh);

	int (*vidioc_s_hw_freq_seek)(struct file *file, void *fh,
				     const struct v4l2_hw_freq_seek *a);

	/* Debugging ioctls */
#ifdef CONFIG_VIDEO_ADV_DEBUG
	int (*vidioc_g_register)(struct file *file, void *fh,
				 struct v4l2_dbg_register *reg);
	int (*vidioc_s_register)(struct file *file, void *fh,
				 const struct v4l2_dbg_register *reg);

	int (*vidioc_g_chip_info)(struct file *file, void *fh,
				  struct v4l2_dbg_chip_info *chip);
#endif

	int (*vidioc_enum_framesizes)(struct file *file, void *fh,
				      struct v4l2_frmsizeenum *fsize);

	int (*vidioc_enum_frameintervals)(struct file *file, void *fh,
					  struct v4l2_frmivalenum *fival);

	/* DV Timings IOCTLs */
	int (*vidioc_s_dv_timings)(struct file *file, void *fh,
				   struct v4l2_dv_timings *timings);
	int (*vidioc_g_dv_timings)(struct file *file, void *fh,
				   struct v4l2_dv_timings *timings);
	int (*vidioc_query_dv_timings)(struct file *file, void *fh,
				       struct v4l2_dv_timings *timings);
	int (*vidioc_enum_dv_timings)(struct file *file, void *fh,
				      struct v4l2_enum_dv_timings *timings);
	int (*vidioc_dv_timings_cap)(struct file *file, void *fh,
				     struct v4l2_dv_timings_cap *cap);
	int (*vidioc_g_edid)(struct file *file, void *fh,
			     struct v4l2_edid *edid);
	int (*vidioc_s_edid)(struct file *file, void *fh,
			     struct v4l2_edid *edid);

	int (*vidioc_subscribe_event)(struct v4l2_fh *fh,
				      const struct v4l2_event_subscription *sub);
	int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
					const struct v4l2_event_subscription *sub);

	/* For other private ioctls */
	long (*vidioc_default)(struct file *file, void *fh,
			       bool valid_prio, unsigned int cmd, void *arg);
};


/* v4l debugging and diagnostics */

/* Device debug flags to be used with the video device debug attribute */

/* Just log the ioctl name + error code */
#define V4L2_DEV_DEBUG_IOCTL		0x01
/* Log the ioctl name arguments + error code */
#define V4L2_DEV_DEBUG_IOCTL_ARG	0x02
/* Log the file operations open, release, mmap and get_unmapped_area */
#define V4L2_DEV_DEBUG_FOP		0x04
/* Log the read and write file operations and the VIDIOC_(D)QBUF ioctls */
#define V4L2_DEV_DEBUG_STREAMING	0x08
/* Log poll() */
#define V4L2_DEV_DEBUG_POLL		0x10

/*  Video standard functions  */

/**
 * v4l2_norm_to_name - Ancillary routine to analog TV standard name from its ID.
 *
 * @id:	analog TV standard ID.
 *
 * Return: returns a string with the name of the analog TV standard.
 * If the standard is not found or if @id points to multiple standard,
 * it returns "Unknown".
 */
const char *v4l2_norm_to_name(v4l2_std_id id);

/**
 * v4l2_video_std_frame_period - Ancillary routine that fills a
 *	struct &v4l2_fract pointer with the default framerate fraction.
 *
 * @id: analog TV sdandard ID.
 * @frameperiod: struct &v4l2_fract pointer to be filled
 *
 */
void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);

/**
 * v4l2_video_std_construct - Ancillary routine that fills in the fields of
 *	a &v4l2_standard structure according to the @id parameter.
 *
 * @vs: struct &v4l2_standard pointer to be filled
 * @id: analog TV sdandard ID.
 * @name: name of the standard to be used
 *
 * .. note::
 *
 *    This ancillary routine is obsolete. Shouldn't be used on newer drivers.
 */
int v4l2_video_std_construct(struct v4l2_standard *vs,
				    int id, const char *name);

/**
 * v4l_printk_ioctl - Ancillary routine that prints the ioctl in a
 *	human-readable format.
 *
 * @prefix: prefix to be added at the ioctl prints.
 * @cmd: ioctl name
 *
 * .. note::
 *
 *    If prefix != %NULL, then it will issue a
 *    ``printk(KERN_DEBUG "%s: ", prefix)`` first.
 */
void v4l_printk_ioctl(const char *prefix, unsigned int cmd);

struct video_device;


/**
 * v4l2_ioctl_get_lock - get the mutex (if any) that it is need to lock for
 *	a given command.
 *
 * @vdev: Pointer to struct &video_device.
 * @cmd: Ioctl name.
 *
 * .. note:: Internal use only. Should not be used outside V4L2 core.
 */
struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned int cmd);

/* names for fancy debug output */
extern const char *v4l2_field_names[];
extern const char *v4l2_type_names[];

#ifdef CONFIG_COMPAT
/**
 * v4l2_compat_ioctl32 -32 Bits compatibility layer for 64 bits processors
 *
 * @file: Pointer to struct &file.
 * @cmd: Ioctl name.
 * @arg: Ioctl argument.
 */
long int v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
			     unsigned long arg);
#endif

/**
 * typedef v4l2_kioctl - Typedef used to pass an ioctl handler.
 *
 * @file: Pointer to struct &file.
 * @cmd: Ioctl name.
 * @arg: Ioctl argument.
 */
typedef long (*v4l2_kioctl)(struct file *file, unsigned int cmd, void *arg);

/**
 * video_usercopy - copies data from/to userspace memory when an ioctl is
 *	issued.
 *
 * @file: Pointer to struct &file.
 * @cmd: Ioctl name.
 * @arg: Ioctl argument.
 * @func: function that will handle the ioctl
 *
 * .. note::
 *
 *    This routine should be used only inside the V4L2 core.
 */
long int video_usercopy(struct file *file, unsigned int cmd,
			unsigned long int arg, v4l2_kioctl func);

/**
 * video_ioctl2 - Handles a V4L2 ioctl.
 *
 * @file: Pointer to struct &file.
 * @cmd: Ioctl name.
 * @arg: Ioctl argument.
 *
 * Method used to hancle an ioctl. Should be used to fill the
 * &v4l2_ioctl_ops.unlocked_ioctl on all V4L2 drivers.
 */
long int video_ioctl2(struct file *file,
		      unsigned int cmd, unsigned long int arg);

#endif /* _V4L2_IOCTL_H */

Privacy Policy