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
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
|
/*
* Video for Linux Two
*
* A generic video device interface for the LINUX operating system
* using a set of device structures/vectors for low level operations.
*
* This file replaces the videodev.c file that comes with the
* regular kernel distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Author: Bill Dirks <bill@thedirks.org>
* based on code by Alan Cox, <alan@cymru.net>
*
*/
/*
* Video capture interface for Linux
*
* A generic video device interface for the LINUX operating system
* using a set of device structures/vectors for low level operations.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Author: Alan Cox, <alan@redhat.com>
*
* Fixes:
*/
/*
* Video4linux 1/2 integration by Justin Schoeman
* <justin@suntiger.ee.up.ac.za>
* 2.4 PROCFS support ported from 2.4 kernels by
* Iñaki García Etxebarria <garetxe@euskalnet.net>
* Makefile fix by "W. Michael Petullo" <mike@flyn.org>
* 2.4 devfs support ported from 2.4 kernels by
* Dan Merillat <dan@merillat.org>
* Added Gerd Knorrs v4l1 enhancements (Justin Schoeman)
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/smp_lock.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/i2c.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/div64.h>
#include <linux/video_decoder.h>
#define __OLD_VIDIOC_ /* To allow fixing old calls*/
#include <media/v4l2-common.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
#if defined(CONFIG_UST) || defined(CONFIG_UST_MODULE)
#include <linux/ust.h>
#endif
#include <linux/videodev.h>
MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr");
MODULE_DESCRIPTION("misc helper functions for v4l2 device drivers");
MODULE_LICENSE("GPL");
/*
*
* V 4 L 2 D R I V E R H E L P E R A P I
*
*/
/*
* Video Standard Operations (contributed by Michael Schimek)
*/
char *v4l2_norm_to_name(v4l2_std_id id)
{
char *name;
u32 myid = id;
/* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
64 bit comparations. So, on that architecture, with some gcc variants,
compilation fails. Currently, the max value is 30bit wide.
*/
BUG_ON(myid != id);
switch (myid) {
case V4L2_STD_PAL:
name="PAL"; break;
case V4L2_STD_PAL_BG:
name="PAL-BG"; break;
case V4L2_STD_PAL_DK:
name="PAL-DK"; break;
case V4L2_STD_PAL_B:
name="PAL-B"; break;
case V4L2_STD_PAL_B1:
name="PAL-B1"; break;
case V4L2_STD_PAL_G:
name="PAL-G"; break;
case V4L2_STD_PAL_H:
name="PAL-H"; break;
case V4L2_STD_PAL_I:
name="PAL-I"; break;
case V4L2_STD_PAL_D:
name="PAL-D"; break;
case V4L2_STD_PAL_D1:
name="PAL-D1"; break;
case V4L2_STD_PAL_K:
name="PAL-K"; break;
case V4L2_STD_PAL_M:
name="PAL-M"; break;
case V4L2_STD_PAL_N:
name="PAL-N"; break;
case V4L2_STD_PAL_Nc:
name="PAL-Nc"; break;
case V4L2_STD_PAL_60:
name="PAL-60"; break;
case V4L2_STD_NTSC:
name="NTSC"; break;
case V4L2_STD_NTSC_M:
name="NTSC-M"; break;
case V4L2_STD_NTSC_M_JP:
name="NTSC-M-JP"; break;
case V4L2_STD_NTSC_443:
name="NTSC-443"; break;
case V4L2_STD_NTSC_M_KR:
name="NTSC-M-KR"; break;
case V4L2_STD_SECAM:
name="SECAM"; break;
case V4L2_STD_SECAM_DK:
name="SECAM-DK"; break;
case V4L2_STD_SECAM_B:
name="SECAM-B"; break;
case V4L2_STD_SECAM_D:
name="SECAM-D"; break;
case V4L2_STD_SECAM_G:
name="SECAM-G"; break;
case V4L2_STD_SECAM_H:
name="SECAM-H"; break;
case V4L2_STD_SECAM_K:
name="SECAM-K"; break;
case V4L2_STD_SECAM_K1:
name="SECAM-K1"; break;
case V4L2_STD_SECAM_L:
name="SECAM-L"; break;
case V4L2_STD_SECAM_LC:
name="SECAM-LC"; break;
default:
name="Unknown"; break;
}
return name;
}
/* Fill in the fields of a v4l2_standard structure according to the
'id' and 'transmission' parameters. Returns negative on error. */
int v4l2_video_std_construct(struct v4l2_standard *vs,
int id, char *name)
{
u32 index = vs->index;
memset(vs, 0, sizeof(struct v4l2_standard));
vs->index = index;
vs->id = id;
if (id & V4L2_STD_525_60) {
vs->frameperiod.numerator = 1001;
vs->frameperiod.denominator = 30000;
vs->framelines = 525;
} else {
vs->frameperiod.numerator = 1;
vs->frameperiod.denominator = 25;
vs->framelines = 625;
}
strlcpy(vs->name,name,sizeof(vs->name));
return 0;
}
/* ----------------------------------------------------------------- */
/* priority handling */
#define V4L2_PRIO_VALID(val) (val == V4L2_PRIORITY_BACKGROUND || \
val == V4L2_PRIORITY_INTERACTIVE || \
val == V4L2_PRIORITY_RECORD)
int v4l2_prio_init(struct v4l2_prio_state *global)
{
memset(global,0,sizeof(*global));
return 0;
}
int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
enum v4l2_priority new)
{
if (!V4L2_PRIO_VALID(new))
return -EINVAL;
if (*local == new)
return 0;
atomic_inc(&global->prios[new]);
if (V4L2_PRIO_VALID(*local))
atomic_dec(&global->prios[*local]);
*local = new;
return 0;
}
int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local)
{
return v4l2_prio_change(global,local,V4L2_PRIORITY_DEFAULT);
}
int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local)
{
if (V4L2_PRIO_VALID(*local))
atomic_dec(&global->prios[*local]);
return 0;
}
enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global)
{
if (atomic_read(&global->prios[V4L2_PRIORITY_RECORD]) > 0)
return V4L2_PRIORITY_RECORD;
if (atomic_read(&global->prios[V4L2_PRIORITY_INTERACTIVE]) > 0)
return V4L2_PRIORITY_INTERACTIVE;
if (atomic_read(&global->prios[V4L2_PRIORITY_BACKGROUND]) > 0)
return V4L2_PRIORITY_BACKGROUND;
return V4L2_PRIORITY_UNSET;
}
int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local)
{
if (*local < v4l2_prio_max(global))
return -EBUSY;
return 0;
}
/* ----------------------------------------------------------------- */
/* some arrays for pretty-printing debug messages of enum types */
char *v4l2_field_names[] = {
[V4L2_FIELD_ANY] = "any",
[V4L2_FIELD_NONE] = "none",
[V4L2_FIELD_TOP] = "top",
[V4L2_FIELD_BOTTOM] = "bottom",
[V4L2_FIELD_INTERLACED] = "interlaced",
[V4L2_FIELD_SEQ_TB] = "seq-tb",
[V4L2_FIELD_SEQ_BT] = "seq-bt",
[V4L2_FIELD_ALTERNATE] = "alternate",
};
char *v4l2_type_names[] = {
[V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap",
[V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over",
[V4L2_BUF_TYPE_VIDEO_OUTPUT] = "video-out",
[V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
[V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
[V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
[V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "slicec-vbi-out",
};
#define prt_names(a,arr) (((a)>=0)&&((a)<ARRAY_SIZE(arr)))?arr[a]:"unknown"
/* ------------------------------------------------------------------ */
/* debug help functions */
#ifdef CONFIG_VIDEO_V4L1_COMPAT
static const char *v4l1_ioctls[] = {
[_IOC_NR(VIDIOCGCAP)] = "VIDIOCGCAP",
[_IOC_NR(VIDIOCGCHAN)] = "VIDIOCGCHAN",
[_IOC_NR(VIDIOCSCHAN)] = "VIDIOCSCHAN",
[_IOC_NR(VIDIOCGTUNER)] = "VIDIOCGTUNER",
[_IOC_NR(VIDIOCSTUNER)] = "VIDIOCSTUNER",
[_IOC_NR(VIDIOCGPICT)] = "VIDIOCGPICT",
[_IOC_NR(VIDIOCSPICT)] = "VIDIOCSPICT",
[_IOC_NR(VIDIOCCAPTURE)] = "VIDIOCCAPTURE",
[_IOC_NR(VIDIOCGWIN)] = "VIDIOCGWIN",
[_IOC_NR(VIDIOCSWIN)] = "VIDIOCSWIN",
[_IOC_NR(VIDIOCGFBUF)] = "VIDIOCGFBUF",
[_IOC_NR(VIDIOCSFBUF)] = "VIDIOCSFBUF",
[_IOC_NR(VIDIOCKEY)] = "VIDIOCKEY",
[_IOC_NR(VIDIOCGFREQ)] = "VIDIOCGFREQ",
[_IOC_NR(VIDIOCSFREQ)] = "VIDIOCSFREQ",
[_IOC_NR(VIDIOCGAUDIO)] = "VIDIOCGAUDIO",
[_IOC_NR(VIDIOCSAUDIO)] = "VIDIOCSAUDIO",
[_IOC_NR(VIDIOCSYNC)] = "VIDIOCSYNC",
[_IOC_NR(VIDIOCMCAPTURE)] = "VIDIOCMCAPTURE",
[_IOC_NR(VIDIOCGMBUF)] = "VIDIOCGMBUF",
[_IOC_NR(VIDIOCGUNIT)] = "VIDIOCGUNIT",
[_IOC_NR(VIDIOCGCAPTURE)] = "VIDIOCGCAPTURE",
[_IOC_NR(VIDIOCSCAPTURE)] = "VIDIOCSCAPTURE",
[_IOC_NR(VIDIOCSPLAYMODE)] = "VIDIOCSPLAYMODE",
[_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE",
[_IOC_NR(VIDIOCGPLAYINFO)] = "VIDIOCGPLAYINFO",
[_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE",
[_IOC_NR(VIDIOCGVBIFMT)] = "VIDIOCGVBIFMT",
[_IOC_NR(VIDIOCSVBIFMT)] = "VIDIOCSVBIFMT"
};
#define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls)
#endif
static const char *v4l2_ioctls[] = {
[_IOC_NR(VIDIOC_QUERYCAP)] = "VIDIOC_QUERYCAP",
[_IOC_NR(VIDIOC_RESERVED)] = "VIDIOC_RESERVED",
[_IOC_NR(VIDIOC_ENUM_FMT)] = "VIDIOC_ENUM_FMT",
[_IOC_NR(VIDIOC_G_FMT)] = "VIDIOC_G_FMT",
[_IOC_NR(VIDIOC_S_FMT)] = "VIDIOC_S_FMT",
[_IOC_NR(VIDIOC_G_MPEGCOMP)] = "VIDIOC_G_MPEGCOMP",
[_IOC_NR(VIDIOC_S_MPEGCOMP)] = "VIDIOC_S_MPEGCOMP",
[_IOC_NR(VIDIOC_REQBUFS)] = "VIDIOC_REQBUFS",
[_IOC_NR(VIDIOC_QUERYBUF)] = "VIDIOC_QUERYBUF",
[_IOC_NR(VIDIOC_G_FBUF)] = "VIDIOC_G_FBUF",
[_IOC_NR(VIDIOC_S_FBUF)] = "VIDIOC_S_FBUF",
[_IOC_NR(VIDIOC_OVERLAY)] = "VIDIOC_OVERLAY",
[_IOC_NR(VIDIOC_QBUF)] = "VIDIOC_QBUF",
[_IOC_NR(VIDIOC_DQBUF)] = "VIDIOC_DQBUF",
[_IOC_NR(VIDIOC_STREAMON)] = "VIDIOC_STREAMON",
[_IOC_NR(VIDIOC_STREAMOFF)] = "VIDIOC_STREAMOFF",
[_IOC_NR(VIDIOC_G_PARM)] = "VIDIOC_G_PARM",
[_IOC_NR(VIDIOC_S_PARM)] = "VIDIOC_S_PARM",
[_IOC_NR(VIDIOC_G_STD)] = "VIDIOC_G_STD",
[_IOC_NR(VIDIOC_S_STD)] = "VIDIOC_S_STD",
[_IOC_NR(VIDIOC_ENUMSTD)] = "VIDIOC_ENUMSTD",
[_IOC_NR(VIDIOC_ENUMINPUT)] = "VIDIOC_ENUMINPUT",
[_IOC_NR(VIDIOC_G_CTRL)] = "VIDIOC_G_CTRL",
[_IOC_NR(VIDIOC_S_CTRL)] = "VIDIOC_S_CTRL",
[_IOC_NR(VIDIOC_G_TUNER)] = "VIDIOC_G_TUNER",
[_IOC_NR(VIDIOC_S_TUNER)] = "VIDIOC_S_TUNER",
[_IOC_NR(VIDIOC_G_AUDIO)] = "VIDIOC_G_AUDIO",
[_IOC_NR(VIDIOC_S_AUDIO)] = "VIDIOC_S_AUDIO",
[_IOC_NR(VIDIOC_QUERYCTRL)] = "VIDIOC_QUERYCTRL",
[_IOC_NR(VIDIOC_QUERYMENU)] = "VIDIOC_QUERYMENU",
[_IOC_NR(VIDIOC_G_INPUT)] = "VIDIOC_G_INPUT",
[_IOC_NR(VIDIOC_S_INPUT)] = "VIDIOC_S_INPUT",
[_IOC_NR(VIDIOC_G_OUTPUT)] = "VIDIOC_G_OUTPUT",
[_IOC_NR(VIDIOC_S_OUTPUT)] = "VIDIOC_S_OUTPUT",
[_IOC_NR(VIDIOC_ENUMOUTPUT)] = "VIDIOC_ENUMOUTPUT",
[_IOC_NR(VIDIOC_G_AUDOUT)] = "VIDIOC_G_AUDOUT",
[_IOC_NR(VIDIOC_S_AUDOUT)] = "VIDIOC_S_AUDOUT",
[_IOC_NR(VIDIOC_G_MODULATOR)] = "VIDIOC_G_MODULATOR",
[_IOC_NR(VIDIOC_S_MODULATOR)] = "VIDIOC_S_MODULATOR",
[_IOC_NR(VIDIOC_G_FREQUENCY)] = "VIDIOC_G_FREQUENCY",
[_IOC_NR(VIDIOC_S_FREQUENCY)] = "VIDIOC_S_FREQUENCY",
[_IOC_NR(VIDIOC_CROPCAP)] = "VIDIOC_CROPCAP",
[_IOC_NR(VIDIOC_G_CROP)] = "VIDIOC_G_CROP",
[_IOC_NR(VIDIOC_S_CROP)] = "VIDIOC_S_CROP",
[_IOC_NR(VIDIOC_G_JPEGCOMP)] = "VIDIOC_G_JPEGCOMP",
[_IOC_NR(VIDIOC_S_JPEGCOMP)] = "VIDIOC_S_JPEGCOMP",
[_IOC_NR(VIDIOC_QUERYSTD)] = "VIDIOC_QUERYSTD",
[_IOC_NR(VIDIOC_TRY_FMT)] = "VIDIOC_TRY_FMT",
[_IOC_NR(VIDIOC_ENUMAUDIO)] = "VIDIOC_ENUMAUDIO",
[_IOC_NR(VIDIOC_ENUMAUDOUT)] = "VIDIOC_ENUMAUDOUT",
[_IOC_NR(VIDIOC_G_PRIORITY)] = "VIDIOC_G_PRIORITY",
[_IOC_NR(VIDIOC_S_PRIORITY)] = "VIDIOC_S_PRIORITY",
[_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP",
[_IOC_NR(VIDIOC_LOG_STATUS)] = "VIDIOC_LOG_STATUS",
[_IOC_NR(VIDIOC_G_EXT_CTRLS)] = "VIDIOC_G_EXT_CTRLS",
[_IOC_NR(VIDIOC_S_EXT_CTRLS)] = "VIDIOC_S_EXT_CTRLS",
[_IOC_NR(VIDIOC_TRY_EXT_CTRLS)] = "VIDIOC_TRY_EXT_CTRLS",
#if 1
[_IOC_NR(VIDIOC_ENUM_FRAMESIZES)] = "VIDIOC_ENUM_FRAMESIZES",
[_IOC_NR(VIDIOC_ENUM_FRAMEINTERVALS)] = "VIDIOC_ENUM_FRAMEINTERVALS",
[_IOC_NR(VIDIOC_G_ENC_INDEX)] = "VIDIOC_G_ENC_INDEX",
[_IOC_NR(VIDIOC_ENCODER_CMD)] = "VIDIOC_ENCODER_CMD",
[_IOC_NR(VIDIOC_TRY_ENCODER_CMD)] = "VIDIOC_TRY_ENCODER_CMD",
[_IOC_NR(VIDIOC_DBG_S_REGISTER)] = "VIDIOC_DBG_S_REGISTER",
[_IOC_NR(VIDIOC_DBG_G_REGISTER)] = "VIDIOC_DBG_G_REGISTER",
#endif
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
static const char *v4l2_int_ioctls[] = {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
[_IOC_NR(DECODER_GET_CAPABILITIES)] = "DECODER_GET_CAPABILITIES",
[_IOC_NR(DECODER_GET_STATUS)] = "DECODER_GET_STATUS",
[_IOC_NR(DECODER_SET_NORM)] = "DECODER_SET_NORM",
[_IOC_NR(DECODER_SET_INPUT)] = "DECODER_SET_INPUT",
[_IOC_NR(DECODER_SET_OUTPUT)] = "DECODER_SET_OUTPUT",
[_IOC_NR(DECODER_ENABLE_OUTPUT)] = "DECODER_ENABLE_OUTPUT",
[_IOC_NR(DECODER_SET_PICTURE)] = "DECODER_SET_PICTURE",
[_IOC_NR(DECODER_SET_GPIO)] = "DECODER_SET_GPIO",
[_IOC_NR(DECODER_INIT)] = "DECODER_INIT",
[_IOC_NR(DECODER_SET_VBI_BYPASS)] = "DECODER_SET_VBI_BYPASS",
[_IOC_NR(DECODER_DUMP)] = "DECODER_DUMP",
#endif
[_IOC_NR(AUDC_SET_RADIO)] = "AUDC_SET_RADIO",
[_IOC_NR(TUNER_SET_TYPE_ADDR)] = "TUNER_SET_TYPE_ADDR",
[_IOC_NR(TUNER_SET_STANDBY)] = "TUNER_SET_STANDBY",
[_IOC_NR(TDA9887_SET_CONFIG)] = "TDA9887_SET_CONFIG",
[_IOC_NR(VIDIOC_INT_S_TUNER_MODE)] = "VIDIOC_INT_S_TUNER_MODE",
[_IOC_NR(VIDIOC_INT_RESET)] = "VIDIOC_INT_RESET",
[_IOC_NR(VIDIOC_INT_AUDIO_CLOCK_FREQ)] = "VIDIOC_INT_AUDIO_CLOCK_FREQ",
[_IOC_NR(VIDIOC_INT_DECODE_VBI_LINE)] = "VIDIOC_INT_DECODE_VBI_LINE",
[_IOC_NR(VIDIOC_INT_S_VBI_DATA)] = "VIDIOC_INT_S_VBI_DATA",
[_IOC_NR(VIDIOC_INT_G_VBI_DATA)] = "VIDIOC_INT_G_VBI_DATA",
[_IOC_NR(VIDIOC_INT_G_CHIP_IDENT)] = "VIDIOC_INT_G_CHIP_IDENT",
[_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)] = "VIDIOC_INT_I2S_CLOCK_FREQ",
[_IOC_NR(VIDIOC_INT_S_STANDBY)] = "VIDIOC_INT_S_STANDBY",
[_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)] = "VIDIOC_INT_S_AUDIO_ROUTING",
[_IOC_NR(VIDIOC_INT_G_AUDIO_ROUTING)] = "VIDIOC_INT_G_AUDIO_ROUTING",
[_IOC_NR(VIDIOC_INT_S_VIDEO_ROUTING)] = "VIDIOC_INT_S_VIDEO_ROUTING",
[_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)] = "VIDIOC_INT_G_VIDEO_ROUTING",
[_IOC_NR(VIDIOC_INT_S_CRYSTAL_FREQ)] = "VIDIOC_INT_S_CRYSTAL_FREQ"
};
#define V4L2_INT_IOCTLS ARRAY_SIZE(v4l2_int_ioctls)
/* Common ioctl debug function. This function can be used by
external ioctl messages as well as internal V4L ioctl */
void v4l_printk_ioctl(unsigned int cmd)
{
char *dir;
switch (_IOC_DIR(cmd)) {
case _IOC_NONE: dir = "--"; break;
case _IOC_READ: dir = "r-"; break;
case _IOC_WRITE: dir = "-w"; break;
case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
default: dir = "*ERR*"; break;
}
switch (_IOC_TYPE(cmd)) {
case 'd':
printk("v4l2_int ioctl %s, dir=%s (0x%08x)\n",
(_IOC_NR(cmd) < V4L2_INT_IOCTLS) ?
v4l2_int_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
break;
#ifdef CONFIG_VIDEO_V4L1_COMPAT
case 'v':
printk("v4l1 ioctl %s, dir=%s (0x%08x)\n",
(_IOC_NR(cmd) < V4L1_IOCTLS) ?
v4l1_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
break;
#endif
case 'V':
printk("v4l2 ioctl %s, dir=%s (0x%08x)\n",
(_IOC_NR(cmd) < V4L2_IOCTLS) ?
v4l2_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
break;
default:
printk("unknown ioctl '%c', dir=%s, #%d (0x%08x)\n",
_IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
}
}
/* ----------------------------------------------------------------- */
/* Helper functions for control handling */
/* Check for correctness of the ctrl's value based on the data from
struct v4l2_queryctrl and the available menu items. Note that
menu_items may be NULL, in that case it is ignored. */
int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl,
const char **menu_items)
{
if (qctrl->flags & V4L2_CTRL_FLAG_DISABLED)
return -EINVAL;
if (qctrl->flags & V4L2_CTRL_FLAG_GRABBED)
return -EBUSY;
if (qctrl->type == V4L2_CTRL_TYPE_BUTTON ||
qctrl->type == V4L2_CTRL_TYPE_INTEGER64 ||
qctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
return 0;
if (ctrl->value < qctrl->minimum || ctrl->value > qctrl->maximum)
return -ERANGE;
if (qctrl->type == V4L2_CTRL_TYPE_MENU && menu_items != NULL) {
if (menu_items[ctrl->value] == NULL ||
menu_items[ctrl->value][0] == '\0')
return -EINVAL;
}
return 0;
}
/* Returns NULL or a character pointer array containing the menu for
the given control ID. The pointer array ends with a NULL pointer.
An empty string signifies a menu entry that is invalid. This allows
drivers to disable certain options if it is not supported. */
const char **v4l2_ctrl_get_menu(u32 id)
{
static const char *mpeg_audio_sampling_freq[] = {
"44.1 kHz",
"48 kHz",
"32 kHz",
NULL
};
static const char *mpeg_audio_encoding[] = {
"Layer I",
"Layer II",
"Layer III",
NULL
};
static const char *mpeg_audio_l1_bitrate[] = {
"32 kbps",
"64 kbps",
"96 kbps",
"128 kbps",
"160 kbps",
"192 kbps",
"224 kbps",
"256 kbps",
"288 kbps",
"320 kbps",
"352 kbps",
"384 kbps",
"416 kbps",
"448 kbps",
NULL
};
static const char *mpeg_audio_l2_bitrate[] = {
"32 kbps",
"48 kbps",
"56 kbps",
"64 kbps",
"80 kbps",
"96 kbps",
"112 kbps",
"128 kbps",
"160 kbps",
"192 kbps",
"224 kbps",
"256 kbps",
"320 kbps",
"384 kbps",
NULL
};
static const char *mpeg_audio_l3_bitrate[] = {
"32 kbps",
"40 kbps",
"48 kbps",
"56 kbps",
"64 kbps",
"80 kbps",
"96 kbps",
"112 kbps",
"128 kbps",
"160 kbps",
"192 kbps",
"224 kbps",
"256 kbps",
"320 kbps",
NULL
};
static const char *mpeg_audio_mode[] = {
"Stereo",
"Joint Stereo",
"Dual",
"Mono",
NULL
};
static const char *mpeg_audio_mode_extension[] = {
"Bound 4",
"Bound 8",
"Bound 12",
"Bound 16",
NULL
};
static const char *mpeg_audio_emphasis[] = {
"No Emphasis",
"50/15 us",
"CCITT J17",
NULL
};
static const char *mpeg_audio_crc[] = {
"No CRC",
"16-bit CRC",
NULL
};
static const char *mpeg_video_encoding[] = {
"MPEG-1",
"MPEG-2",
NULL
};
static const char *mpeg_video_aspect[] = {
"1x1",
"4x3",
"16x9",
"2.21x1",
NULL
};
static const char *mpeg_video_bitrate_mode[] = {
"Variable Bitrate",
"Constant Bitrate",
NULL
};
static const char *mpeg_stream_type[] = {
"MPEG-2 Program Stream",
"MPEG-2 Transport Stream",
"MPEG-1 System Stream",
"MPEG-2 DVD-compatible Stream",
"MPEG-1 VCD-compatible Stream",
"MPEG-2 SVCD-compatible Stream",
NULL
};
static const char *mpeg_stream_vbi_fmt[] = {
"No VBI",
"Private packet, IVTV format",
NULL
};
switch (id) {
case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
return mpeg_audio_sampling_freq;
case V4L2_CID_MPEG_AUDIO_ENCODING:
return mpeg_audio_encoding;
case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
return mpeg_audio_l1_bitrate;
case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
return mpeg_audio_l2_bitrate;
case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
return mpeg_audio_l3_bitrate;
case V4L2_CID_MPEG_AUDIO_MODE:
return mpeg_audio_mode;
case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
return mpeg_audio_mode_extension;
case V4L2_CID_MPEG_AUDIO_EMPHASIS:
return mpeg_audio_emphasis;
case V4L2_CID_MPEG_AUDIO_CRC:
return mpeg_audio_crc;
case V4L2_CID_MPEG_VIDEO_ENCODING:
return mpeg_video_encoding;
case V4L2_CID_MPEG_VIDEO_ASPECT:
return mpeg_video_aspect;
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
return mpeg_video_bitrate_mode;
case V4L2_CID_MPEG_STREAM_TYPE:
return mpeg_stream_type;
case V4L2_CID_MPEG_STREAM_VBI_FMT:
return mpeg_stream_vbi_fmt;
default:
return NULL;
}
}
/* Fill in a struct v4l2_queryctrl */
int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def)
{
const char *name;
qctrl->flags = 0;
switch (qctrl->id) {
/* USER controls */
case V4L2_CID_USER_CLASS: name = "User Controls"; break;
case V4L2_CID_AUDIO_VOLUME: name = "Volume"; break;
case V4L2_CID_AUDIO_MUTE: name = "Mute"; break;
case V4L2_CID_AUDIO_BALANCE: name = "Balance"; break;
case V4L2_CID_AUDIO_BASS: name = "Bass"; break;
case V4L2_CID_AUDIO_TREBLE: name = "Treble"; break;
case V4L2_CID_AUDIO_LOUDNESS: name = "Loudness"; break;
case V4L2_CID_BRIGHTNESS: name = "Brightness"; break;
case V4L2_CID_CONTRAST: name = "Contrast"; break;
case V4L2_CID_SATURATION: name = "Saturation"; break;
case V4L2_CID_HUE: name = "Hue"; break;
/* MPEG controls */
case V4L2_CID_MPEG_CLASS: name = "MPEG Encoder Controls"; break;
case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: name = "Audio Sampling Frequency"; break;
case V4L2_CID_MPEG_AUDIO_ENCODING: name = "Audio Encoding Layer"; break;
case V4L2_CID_MPEG_AUDIO_L1_BITRATE: name = "Audio Layer I Bitrate"; break;
case V4L2_CID_MPEG_AUDIO_L2_BITRATE: name = "Audio Layer II Bitrate"; break;
case V4L2_CID_MPEG_AUDIO_L3_BITRATE: name = "Audio Layer III Bitrate"; break;
case V4L2_CID_MPEG_AUDIO_MODE: name = "Audio Stereo Mode"; break;
case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: name = "Audio Stereo Mode Extension"; break;
case V4L2_CID_MPEG_AUDIO_EMPHASIS: name = "Audio Emphasis"; break;
case V4L2_CID_MPEG_AUDIO_CRC: name = "Audio CRC"; break;
case V4L2_CID_MPEG_AUDIO_MUTE: name = "Audio Mute"; break;
case V4L2_CID_MPEG_VIDEO_ENCODING: name = "Video Encoding"; break;
case V4L2_CID_MPEG_VIDEO_ASPECT: name = "Video Aspect"; break;
case V4L2_CID_MPEG_VIDEO_B_FRAMES: name = "Video B Frames"; break;
case V4L2_CID_MPEG_VIDEO_GOP_SIZE: name = "Video GOP Size"; break;
case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: name = "Video GOP Closure"; break;
case V4L2_CID_MPEG_VIDEO_PULLDOWN: name = "Video Pulldown"; break;
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: name = "Video Bitrate Mode"; break;
case V4L2_CID_MPEG_VIDEO_BITRATE: name = "Video Bitrate"; break;
case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: name = "Video Peak Bitrate"; break;
case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: name = "Video Temporal Decimation"; break;
case V4L2_CID_MPEG_VIDEO_MUTE: name = "Video Mute"; break;
case V4L2_CID_MPEG_VIDEO_MUTE_YUV: name = "Video Mute YUV"; break;
case V4L2_CID_MPEG_STREAM_TYPE: name = "Stream Type"; break;
case V4L2_CID_MPEG_STREAM_PID_PMT: name = "Stream PMT Program ID"; break;
case V4L2_CID_MPEG_STREAM_PID_AUDIO: name = "Stream Audio Program ID"; break;
case V4L2_CID_MPEG_STREAM_PID_VIDEO: name = "Stream Video Program ID"; break;
case V4L2_CID_MPEG_STREAM_PID_PCR: name = "Stream PCR Program ID"; break;
case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: name = "Stream PES Audio ID"; break;
case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: name = "Stream PES Video ID"; break;
case V4L2_CID_MPEG_STREAM_VBI_FMT: name = "Stream VBI Format"; break;
default:
return -EINVAL;
}
switch (qctrl->id) {
case V4L2_CID_AUDIO_MUTE:
case V4L2_CID_AUDIO_LOUDNESS:
case V4L2_CID_MPEG_AUDIO_MUTE:
case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
case V4L2_CID_MPEG_VIDEO_PULLDOWN:
qctrl->type = V4L2_CTRL_TYPE_BOOLEAN;
min = 0;
max = step = 1;
break;
case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
case V4L2_CID_MPEG_AUDIO_ENCODING:
case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
case V4L2_CID_MPEG_AUDIO_MODE:
case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
case V4L2_CID_MPEG_AUDIO_EMPHASIS:
case V4L2_CID_MPEG_AUDIO_CRC:
case V4L2_CID_MPEG_VIDEO_ENCODING:
case V4L2_CID_MPEG_VIDEO_ASPECT:
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
case V4L2_CID_MPEG_STREAM_TYPE:
case V4L2_CID_MPEG_STREAM_VBI_FMT:
qctrl->type = V4L2_CTRL_TYPE_MENU;
step = 1;
break;
case V4L2_CID_USER_CLASS:
case V4L2_CID_MPEG_CLASS:
qctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS;
qctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
min = max = step = def = 0;
break;
default:
qctrl->type = V4L2_CTRL_TYPE_INTEGER;
break;
}
switch (qctrl->id) {
case V4L2_CID_MPEG_AUDIO_ENCODING:
case V4L2_CID_MPEG_AUDIO_MODE:
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
case V4L2_CID_MPEG_VIDEO_B_FRAMES:
case V4L2_CID_MPEG_STREAM_TYPE:
qctrl->flags |= V4L2_CTRL_FLAG_UPDATE;
break;
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_BALANCE:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
case V4L2_CID_BRIGHTNESS:
case V4L2_CID_CONTRAST:
case V4L2_CID_SATURATION:
case V4L2_CID_HUE:
qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;
break;
}
qctrl->minimum = min;
qctrl->maximum = max;
qctrl->step = step;
qctrl->default_value = def;
qctrl->reserved[0] = qctrl->reserved[1] = 0;
snprintf(qctrl->name, sizeof(qctrl->name), name);
return 0;
}
/* Fill in a struct v4l2_queryctrl with standard values based on
the control ID. */
int v4l2_ctrl_query_fill_std(struct v4l2_queryctrl *qctrl)
{
switch (qctrl->id) {
/* USER controls */
case V4L2_CID_USER_CLASS:
case V4L2_CID_MPEG_CLASS:
return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0);
case V4L2_CID_AUDIO_VOLUME:
return v4l2_ctrl_query_fill(qctrl, 0, 65535, 65535 / 100, 58880);
case V4L2_CID_AUDIO_MUTE:
case V4L2_CID_AUDIO_LOUDNESS:
return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0);
case V4L2_CID_AUDIO_BALANCE:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
return v4l2_ctrl_query_fill(qctrl, 0, 65535, 65535 / 100, 32768);
case V4L2_CID_BRIGHTNESS:
return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 128);
case V4L2_CID_CONTRAST:
case V4L2_CID_SATURATION:
return v4l2_ctrl_query_fill(qctrl, 0, 127, 1, 64);
case V4L2_CID_HUE:
return v4l2_ctrl_query_fill(qctrl, -128, 127, 1, 0);
/* MPEG controls */
case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100,
V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000, 1,
V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000);
case V4L2_CID_MPEG_AUDIO_ENCODING:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_AUDIO_ENCODING_LAYER_1,
V4L2_MPEG_AUDIO_ENCODING_LAYER_3, 1,
V4L2_MPEG_AUDIO_ENCODING_LAYER_2);
case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_AUDIO_L1_BITRATE_32K,
V4L2_MPEG_AUDIO_L1_BITRATE_448K, 1,
V4L2_MPEG_AUDIO_L1_BITRATE_256K);
case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_AUDIO_L2_BITRATE_32K,
V4L2_MPEG_AUDIO_L2_BITRATE_384K, 1,
V4L2_MPEG_AUDIO_L2_BITRATE_224K);
case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_AUDIO_L3_BITRATE_32K,
V4L2_MPEG_AUDIO_L3_BITRATE_320K, 1,
V4L2_MPEG_AUDIO_L3_BITRATE_192K);
case V4L2_CID_MPEG_AUDIO_MODE:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_AUDIO_MODE_STEREO,
V4L2_MPEG_AUDIO_MODE_MONO, 1,
V4L2_MPEG_AUDIO_MODE_STEREO);
case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4,
V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16, 1,
V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4);
case V4L2_CID_MPEG_AUDIO_EMPHASIS:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_AUDIO_EMPHASIS_NONE,
V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17, 1,
V4L2_MPEG_AUDIO_EMPHASIS_NONE);
case V4L2_CID_MPEG_AUDIO_CRC:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_AUDIO_CRC_NONE,
V4L2_MPEG_AUDIO_CRC_CRC16, 1,
V4L2_MPEG_AUDIO_CRC_NONE);
case V4L2_CID_MPEG_AUDIO_MUTE:
return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0);
case V4L2_CID_MPEG_VIDEO_ENCODING:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_VIDEO_ENCODING_MPEG_1,
V4L2_MPEG_VIDEO_ENCODING_MPEG_2, 1,
V4L2_MPEG_VIDEO_ENCODING_MPEG_2);
case V4L2_CID_MPEG_VIDEO_ASPECT:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_VIDEO_ASPECT_1x1,
V4L2_MPEG_VIDEO_ASPECT_221x100, 1,
V4L2_MPEG_VIDEO_ASPECT_4x3);
case V4L2_CID_MPEG_VIDEO_B_FRAMES:
return v4l2_ctrl_query_fill(qctrl, 0, 33, 1, 2);
case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
return v4l2_ctrl_query_fill(qctrl, 1, 34, 1, 12);
case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 1);
case V4L2_CID_MPEG_VIDEO_PULLDOWN:
return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0);
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1,
V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
case V4L2_CID_MPEG_VIDEO_BITRATE:
return v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 6000000);
case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
return v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 8000000);
case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION:
return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 0);
case V4L2_CID_MPEG_VIDEO_MUTE:
return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0);
case V4L2_CID_MPEG_VIDEO_MUTE_YUV: /* Init YUV (really YCbCr) to black */
return v4l2_ctrl_query_fill(qctrl, 0, 0xffffff, 1, 0x008080);
case V4L2_CID_MPEG_STREAM_TYPE:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_STREAM_TYPE_MPEG2_PS,
V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD, 1,
V4L2_MPEG_STREAM_TYPE_MPEG2_PS);
case V4L2_CID_MPEG_STREAM_PID_PMT:
return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 16);
case V4L2_CID_MPEG_STREAM_PID_AUDIO:
return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 260);
case V4L2_CID_MPEG_STREAM_PID_VIDEO:
return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 256);
case V4L2_CID_MPEG_STREAM_PID_PCR:
return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 259);
case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO:
return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 0);
case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO:
return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 0);
case V4L2_CID_MPEG_STREAM_VBI_FMT:
return v4l2_ctrl_query_fill(qctrl,
V4L2_MPEG_STREAM_VBI_FMT_NONE,
V4L2_MPEG_STREAM_VBI_FMT_IVTV, 1,
V4L2_MPEG_STREAM_VBI_FMT_NONE);
default:
return -EINVAL;
}
}
/* Fill in a struct v4l2_querymenu based on the struct v4l2_queryctrl and
the menu. The qctrl pointer may be NULL, in which case it is ignored. */
int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu, struct v4l2_queryctrl *qctrl,
const char **menu_items)
{
int i;
if (menu_items == NULL ||
(qctrl && (qmenu->index < qctrl->minimum || qmenu->index > qctrl->maximum)))
return -EINVAL;
for (i = 0; i < qmenu->index && menu_items[i]; i++) ;
if (menu_items[i] == NULL || menu_items[i][0] == '\0')
return -EINVAL;
snprintf(qmenu->name, sizeof(qmenu->name), menu_items[qmenu->index]);
qmenu->reserved = 0;
return 0;
}
/* ctrl_classes points to an array of u32 pointers, the last element is
a NULL pointer. Each u32 array is a 0-terminated array of control IDs.
Each array must be sorted low to high and belong to the same control
class. The array of u32 pointer must also be sorted, from low class IDs
to high class IDs.
This function returns the first ID that follows after the given ID.
When no more controls are available 0 is returned. */
u32 v4l2_ctrl_next(const u32 * const * ctrl_classes, u32 id)
{
u32 ctrl_class;
const u32 *pctrl;
/* if no query is desired, then just return the control ID */
if ((id & V4L2_CTRL_FLAG_NEXT_CTRL) == 0)
return id;
if (ctrl_classes == NULL)
return 0;
id &= V4L2_CTRL_ID_MASK;
ctrl_class = V4L2_CTRL_ID2CLASS(id);
id++; /* select next control */
/* find first class that matches (or is greater than) the class of
the ID */
while (*ctrl_classes && V4L2_CTRL_ID2CLASS(**ctrl_classes) < ctrl_class)
ctrl_classes++;
/* no more classes */
if (*ctrl_classes == NULL)
return 0;
pctrl = *ctrl_classes;
/* find first ctrl within the class that is >= ID */
while (*pctrl && *pctrl < id) pctrl++;
if (*pctrl)
return *pctrl;
/* we are at the end of the controls of the current class. */
/* continue with next class if available */
ctrl_classes++;
if (*ctrl_classes == NULL)
return 0;
return **ctrl_classes;
}
int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 match_type, u32 match_chip)
{
switch (match_type) {
case V4L2_CHIP_MATCH_I2C_DRIVER:
return (c != NULL && c->driver != NULL && c->driver->id == match_chip);
case V4L2_CHIP_MATCH_I2C_ADDR:
return (c != NULL && c->addr == match_chip);
default:
return 0;
}
}
int v4l2_chip_match_host(u32 match_type, u32 match_chip)
{
switch (match_type) {
case V4L2_CHIP_MATCH_HOST:
return match_chip == 0;
default:
return 0;
}
}
/* ----------------------------------------------------------------- */
EXPORT_SYMBOL(v4l2_norm_to_name);
EXPORT_SYMBOL(v4l2_video_std_construct);
EXPORT_SYMBOL(v4l2_prio_init);
EXPORT_SYMBOL(v4l2_prio_change);
EXPORT_SYMBOL(v4l2_prio_open);
EXPORT_SYMBOL(v4l2_prio_close);
EXPORT_SYMBOL(v4l2_prio_max);
EXPORT_SYMBOL(v4l2_prio_check);
EXPORT_SYMBOL(v4l2_field_names);
EXPORT_SYMBOL(v4l2_type_names);
EXPORT_SYMBOL(v4l_printk_ioctl);
EXPORT_SYMBOL(v4l2_ctrl_next);
EXPORT_SYMBOL(v4l2_ctrl_check);
EXPORT_SYMBOL(v4l2_ctrl_get_menu);
EXPORT_SYMBOL(v4l2_ctrl_query_menu);
EXPORT_SYMBOL(v4l2_ctrl_query_fill);
EXPORT_SYMBOL(v4l2_ctrl_query_fill_std);
EXPORT_SYMBOL(v4l2_chip_match_i2c_client);
EXPORT_SYMBOL(v4l2_chip_match_host);
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
|
