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
|
/* $NetBSD: video_if.h,v 1.12 2022/07/05 20:15:40 andvar Exp $ */
/*
* Copyright (c) 2008 Patrick Mahoney <pat@polycrystal.org>
* All rights reserved.
*
* This code was written by Patrick Mahoney (pat@polycrystal.org) as
* part of Google Summer of Code 2008.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This ia a Video4Linux 2 compatible /dev/video driver for NetBSD
*
* See http://v4l2spec.bytesex.org/ for Video4Linux 2 specifications
*/
#ifndef _SYS_DEV_VIDEO_IF_H_
#define _SYS_DEV_VIDEO_IF_H_
#include <sys/types.h>
#include <sys/videoio.h>
#if defined(_KERNEL_OPT)
#include "video.h"
#if (NVIDEO == 0)
#error "No 'video* at videobus?' configured"
#endif
#endif /* _KERNEL_OPT */
struct video_softc;
/* Controls provide a way to query and set controls in the camera
* hardware. The control structure is the primitive unit. Control
* groups are arrays of controls that must be set together (e.g. pan
* direction and pan speed). Control descriptors describe a control
* including minimum and maximum values, read-only state, etc. A
* control group descriptor is an array of control descriptors
* corresponding to a control group array of controls.
*
* A control_group is made up of multiple controls meant to be set
* together and is identified by a 16 bit group_id. Each control is
* identified by a group_id and a control_id. Controls that are the
* sole member of a control_group may ignore the control_id or
* redundantly have the control_id equal to the group_id.
*
* The hardware driver only handles control_group's, many of which
* will only have a single control.
*
* Some id's are defined here (closely following the USB Video Class
* controls) with room for unspecified extended controls. These id's
* may be used for group_id's or control_id's as appropriate.
*/
enum video_control_id {
VIDEO_CONTROL_UNDEFINED,
/* camera hardware */
VIDEO_CONTROL_SCANNING_MODE,
VIDEO_CONTROL_AE_MODE,
VIDEO_CONTROL_EXPOSURE_TIME_ABSOLUTE,
VIDEO_CONTROL_EXPOSURE_TIME_RELATIVE,
VIDEO_CONTROL_FOCUS_ABSOLUTE,
VIDEO_CONTROL_FOCUS_RELATIVE,
VIDEO_CONTROL_IRIS_ABSOLUTE,
VIDEO_CONTROL_IRIS_RELATIVE,
VIDEO_CONTROL_ZOOM_ABSOLUTE,
VIDEO_CONTROL_ZOOM_RELATIVE,
VIDEO_CONTROL_PANTILT_ABSOLUTE,
VIDEO_CONTROL_PANTILT_RELATIVE,
VIDEO_CONTROL_ROLL_ABSOLUTE,
VIDEO_CONTROL_ROLL_RELATIVE,
VIDEO_CONTROL_PRIVACY,
/* video processing */
VIDEO_CONTROL_BACKLIGHT_COMPENSATION,
VIDEO_CONTROL_BRIGHTNESS,
VIDEO_CONTROL_CONTRAST,
VIDEO_CONTROL_GAIN,
VIDEO_CONTROL_GAIN_AUTO, /* not in UVC */
VIDEO_CONTROL_POWER_LINE_FREQUENCY,
VIDEO_CONTROL_HUE,
VIDEO_CONTROL_SATURATION,
VIDEO_CONTROL_SHARPNESS,
VIDEO_CONTROL_GAMMA,
/* Generic WHITE_BALANCE controls applies to whichever type of
* white balance the hardware implements to either perform one
* white balance action or enable auto white balance. */
VIDEO_CONTROL_WHITE_BALANCE_ACTION,
VIDEO_CONTROL_WHITE_BALANCE_AUTO,
VIDEO_CONTROL_WHITE_BALANCE_TEMPERATURE,
VIDEO_CONTROL_WHITE_BALANCE_TEMPERATURE_AUTO,
VIDEO_CONTROL_WHITE_BALANCE_COMPONENT,
VIDEO_CONTROL_WHITE_BALANCE_COMPONENT_AUTO,
VIDEO_CONTROL_DIGITAL_MULTIPLIER,
VIDEO_CONTROL_DIGITAL_MULTIPLIER_LIMIT,
VIDEO_CONTROL_HUE_AUTO,
VIDEO_CONTROL_ANALOG_VIDEO_STANDARD,
VIDEO_CONTROL_ANALOG_LOCK_STATUS,
/* video stream */
VIDEO_CONTROL_GENERATE_KEY_FRAME,
VIDEO_CONTROL_UPDATE_FRAME_SEGMENT,
/* misc, not in UVC */
VIDEO_CONTROL_HFLIP,
VIDEO_CONTROL_VFLIP,
/* Custom controls start here; any controls beyond this are
* valid and considered "extended". */
VIDEO_CONTROL_EXTENDED
};
enum video_control_type {
VIDEO_CONTROL_TYPE_INT, /* signed 32 bit integer */
VIDEO_CONTROL_TYPE_BOOL,
VIDEO_CONTROL_TYPE_LIST, /* V4L2 MENU */
VIDEO_CONTROL_TYPE_ACTION /* V4L2 BUTTON */
};
#define VIDEO_CONTROL_FLAG_READ (1<<0)
#define VIDEO_CONTROL_FLAG_WRITE (1<<1)
#define VIDEO_CONTROL_FLAG_DISABLED (1<<2) /* V4L2 INACTIVE */
#define VIDEO_CONTROL_FLAG_AUTOUPDATE (1<<3)
#define VIDEO_CONTROL_FLAG_ASYNC (1<<4)
struct video_control_desc {
uint16_t group_id;
uint16_t control_id;
uint8_t name[32];
uint32_t flags;
enum video_control_type type;
int32_t min;
int32_t max;
int32_t step;
int32_t def;
};
/* array of struct video_control_value_info belonging to the same control */
struct video_control_desc_group {
uint16_t group_id;
uint8_t length;
struct video_control_desc *desc;
};
struct video_control {
uint16_t group_id;
uint16_t control_id;
int32_t value;
};
/* array of struct video_control_value belonging to the same control */
struct video_control_group {
uint16_t group_id;
uint8_t length;
struct video_control *control;
};
struct video_control_iter {
struct video_control_desc *desc;
};
/* format of video data in a video sample */
enum video_pixel_format {
VIDEO_FORMAT_UNDEFINED,
/* uncompressed frame-based formats */
VIDEO_FORMAT_YUY2, /* packed 4:2:2 */
VIDEO_FORMAT_NV12, /* planar 4:2:0 */
VIDEO_FORMAT_RGB24,
VIDEO_FORMAT_RGB555,
VIDEO_FORMAT_RGB565,
VIDEO_FORMAT_YUV420,
VIDEO_FORMAT_SBGGR8,
VIDEO_FORMAT_UYVY,
/* compressed frame-based formats */
VIDEO_FORMAT_MJPEG, /* frames of JPEG images */
VIDEO_FORMAT_DV,
/* stream-based formats */
VIDEO_FORMAT_MPEG
};
/* video standards */
enum video_standard {
VIDEO_STANDARD_PAL_B = 0x00000001,
VIDEO_STANDARD_PAL_B1 = 0x00000002,
VIDEO_STANDARD_PAL_G = 0x00000004,
VIDEO_STANDARD_PAL_H = 0x00000008,
VIDEO_STANDARD_PAL_I = 0x00000010,
VIDEO_STANDARD_PAL_D = 0x00000020,
VIDEO_STANDARD_PAL_D1 = 0x00000040,
VIDEO_STANDARD_PAL_K = 0x00000080,
VIDEO_STANDARD_PAL_M = 0x00000100,
VIDEO_STANDARD_PAL_N = 0x00000200,
VIDEO_STANDARD_PAL_Nc = 0x00000400,
VIDEO_STANDARD_PAL_60 = 0x00000800,
VIDEO_STANDARD_NTSC_M = 0x00001000,
VIDEO_STANDARD_NTSC_M_JP = 0x00002000,
VIDEO_STANDARD_NTSC_443 = 0x00004000,
VIDEO_STANDARD_NTSC_M_KR = 0x00008000,
VIDEO_STANDARD_SECAM_B = 0x00010000,
VIDEO_STANDARD_SECAM_D = 0x00020000,
VIDEO_STANDARD_SECAM_G = 0x00040000,
VIDEO_STANDARD_SECAM_H = 0x00080000,
VIDEO_STANDARD_SECAM_K = 0x00100000,
VIDEO_STANDARD_SECAM_K1 = 0x00200000,
VIDEO_STANDARD_SECAM_L = 0x00400000,
VIDEO_STANDARD_UNKNOWN = 0x00000000
};
/* interlace_flags bits are allocated like this:
7 6 5 4 3 2 1 0
\_/ | | |interlaced or progressive
| | |packing style of fields (interlaced or planar)
| |fields per sample (1 or 2)
|pattern (F1 only, F2 only, F12, RND)
*/
/* two bits */
#define VIDEO_INTERLACED(iflags) (iflags & 1)
enum video_interlace_presence {
VIDEO_INTERLACE_OFF = 0, /* progressive */
VIDEO_INTERLACE_ON = 1,
VIDEO_INTERLACE_ANY = 2 /* in requests, accept any interlacing */
};
/* one bit, not in UVC */
#define VIDEO_INTERLACE_PACKING(iflags) ((iflags >> 2) & 1)
enum video_interlace_packing {
VIDEO_INTERLACE_INTERLACED = 0, /* F1 and F2 are interlaced */
VIDEO_INTERLACE_PLANAR = 1 /* entire F1 is followed by F2 */
};
/* one bit, not in V4L2; Is this not redundant with PATTERN below?
* For now, I'm assuming it describes where the "end-of-frame" markers
* appear in the stream data: after every field or after every two
* fields. */
#define VIDEO_INTERLACE_FIELDS_PER_SAMPLE(iflags) ((iflags >> 3) & 1)
enum video_interlace_fields_per_sample {
VIDEO_INTERLACE_TWO_FIELDS_PER_SAMPLE = 0,
VIDEO_INTERLACE_ONE_FIELD_PER_SAMPLE = 1
};
/* two bits */
#define VIDEO_INTERLACE_PATTERN(iflags) ((iflags >> 4) & 3)
enum video_interlace_pattern {
VIDEO_INTERLACE_PATTERN_F1 = 0,
VIDEO_INTERLACE_PATTERN_F2 = 1,
VIDEO_INTERLACE_PATTERN_F12 = 2,
VIDEO_INTERLACE_PATTERN_RND = 3
};
enum video_color_primaries {
VIDEO_COLOR_PRIMARIES_UNSPECIFIED,
VIDEO_COLOR_PRIMARIES_BT709, /* identical to sRGB */
VIDEO_COLOR_PRIMARIES_BT470_2_M,
VIDEO_COLOR_PRIMARIES_BT470_2_BG,
VIDEO_COLOR_PRIMARIES_SMPTE_170M,
VIDEO_COLOR_PRIMARIES_SMPTE_240M,
VIDEO_COLOR_PRIMARIES_BT878 /* in V4L2 as broken BT878 chip */
};
enum video_gamma_function {
VIDEO_GAMMA_FUNCTION_UNSPECIFIED,
VIDEO_GAMMA_FUNCTION_BT709,
VIDEO_GAMMA_FUNCTION_BT470_2_M,
VIDEO_GAMMA_FUNCTION_BT470_2_BG,
VIDEO_GAMMA_FUNCTION_SMPTE_170M,
VIDEO_GAMMA_FUNCTION_SMPTE_240M,
VIDEO_GAMMA_FUNCTION_LINEAR,
VIDEO_GAMMA_FUNCTION_sRGB, /* similar but not identical to BT709 */
VIDEO_GAMMA_FUNCTION_BT878 /* in V4L2 as broken BT878 chip */
};
/* Matrix coefficients for converting YUV to RGB */
enum video_matrix_coeff {
VIDEO_MATRIX_COEFF_UNSPECIFIED,
VIDEO_MATRIX_COEFF_BT709,
VIDEO_MATRIX_COEFF_FCC,
VIDEO_MATRIX_COEFF_BT470_2_BG,
VIDEO_MATRIX_COEFF_SMPTE_170M,
VIDEO_MATRIX_COEFF_SMPTE_240M,
VIDEO_MATRIX_COEFF_BT878 /* in V4L2 as broken BT878 chip */
};
/* UVC spec separates these into three categories. V4L2 does not. */
struct video_colorspace {
enum video_color_primaries primaries;
enum video_gamma_function gamma_function;
enum video_matrix_coeff matrix_coeff;
};
#ifdef undef
/* Structs for future split into format/frame/interval. All functions
* interacting with the hardware layer will deal with these structs.
* This video layer will handle translating them to V4L2 structs as
* necessary. */
struct video_format {
enum video_pixel_format vfo_pixel_format;
uint8_t vfo_aspect_x; /* aspect ratio x and y */
uint8_t vfo_aspect_y;
struct video_colorspace vfo_color;
uint8_t vfo_interlace_flags;
};
struct video_frame {
uint32_t vfr_width; /* dimensions in pixels */
uint32_t vfr_height;
uint32_t vfr_sample_size; /* max sample size */
uint32_t vfr_stride; /* length of one row of pixels in
* bytes; uncompressed formats
* only */
};
enum video_frame_interval_type {
VIDEO_FRAME_INTERVAL_TYPE_CONTINUOUS,
VIDEO_FRAME_INTERVAL_TYPE_DISCRETE
};
/* UVC spec frame interval units are 100s of nanoseconds. V4L2 spec
* uses a {32/32} bit struct fraction in seconds. We use 100ns units
* here. */
#define VIDEO_FRAME_INTERVAL_UNITS_PER_US (10)
#define VIDEO_FRAME_INTERVAL_UNITS_PER_MS (10 * 1000)
#define VIDEO_FRAME_INTERVAL_UNITS_PER_S (10 * 1000 * 1000)
struct video_frame_interval {
enum video_frame_interval_type vfi_type;
union {
struct {
uint32_t min;
uint32_t max;
uint32_t step;
} vfi_continuous;
uint32_t vfi_discrete;
};
};
#endif /* undef */
/* Describes a video format. For frame based formats, one sample is
* equivalent to one frame. For stream based formats such as MPEG, a
* sample is logical unit of that streaming format.
*/
struct video_format {
enum video_pixel_format pixel_format;
uint32_t width; /* dimensions in pixels */
uint32_t height;
uint8_t aspect_x; /* aspect ratio x and y */
uint8_t aspect_y;
uint32_t sample_size; /* max sample size */
uint32_t stride; /* length of one row of pixels in
* bytes; uncompressed formats
* only */
struct video_colorspace color;
uint8_t interlace_flags;
uint32_t priv; /* For private use by hardware driver.
* Must be set to zero if not used. */
};
/* Represents the amount of time a single frame is displayed. */
struct video_fract {
uint32_t numerator;
uint32_t denominator;
};
/* A payload is the smallest unit transferred from the hardware driver
* to the video layer. Multiple video payloads make up one video
* sample. */
struct video_payload {
const uint8_t *data;
size_t size; /* size in bytes of this payload */
int frameno; /* toggles between 0 and 1 */
bool end_of_frame; /* set if this is the last
* payload in the frame. */
};
/* tuner frequency, frequencies are in units of 62.5 kHz */
struct video_frequency {
uint32_t tuner_index;
uint32_t frequency;
};
/* video tuner capability flags */
#define VIDEO_TUNER_F_MONO (1 << 0)
#define VIDEO_TUNER_F_STEREO (1 << 1)
#define VIDEO_TUNER_F_LANG1 (1 << 2)
#define VIDEO_TUNER_F_LANG2 (1 << 3)
/* Video tuner definition */
struct video_tuner {
uint32_t index;
char name[32]; /* tuner name */
uint32_t freq_lo; /* lowest tunable frequency */
uint32_t freq_hi; /* highest tunable frequency */
uint32_t caps; /* capability flags */
uint32_t mode; /* audio mode flags */
uint32_t signal; /* signal strength */
int32_t afc; /* automatic frequency control */
};
/* Video input capability flags */
enum video_input_type {
VIDEO_INPUT_TYPE_TUNER, /* RF demodulator */
VIDEO_INPUT_TYPE_BASEBAND, /* analog baseband */
VIDEO_INPUT_TYPE_CAMERA = VIDEO_INPUT_TYPE_BASEBAND,
};
#define VIDEO_STATUS_NO_POWER (1 << 0)
#define VIDEO_STATUS_NO_SIGNAL (1 << 1)
#define VIDEO_STATUS_NO_COLOR (1 << 2)
#define VIDEO_STATUS_NO_HLOCK (1 << 3)
#define VIDEO_STATUS_MACROVISION (1 << 4)
/* Video input definition */
struct video_input {
uint32_t index;
char name[32]; /* video input name */
enum video_input_type type; /* input type */
uint32_t audiomask; /* bitmask of assoc. audio inputs */
uint32_t tuner_index; /* tuner index if applicable */
uint64_t standards; /* all supported standards */
uint32_t status; /* input status */
};
/* Audio input capability flags */
#define VIDEO_AUDIO_F_STEREO (1 << 0)
#define VIDEO_AUDIO_F_AVL (1 << 1)
/* Audio input definition */
struct video_audio {
uint32_t index;
char name[32]; /* audio input name */
uint32_t caps; /* capabilities flags */
uint32_t mode; /* audio mode flags */
};
struct video_hw_if {
int (*open)(void *, int); /* open hardware */
void (*close)(void *); /* close hardware */
const char * (*get_devname)(void *);
const char * (*get_businfo)(void *);
int (*enum_format)(void *, uint32_t, struct video_format *);
int (*get_format)(void *, struct video_format *);
int (*set_format)(void *, struct video_format *);
int (*try_format)(void *, struct video_format *);
int (*enum_standard)(void *, uint32_t, enum video_standard *);
int (*get_standard)(void *, enum video_standard *);
int (*set_standard)(void *, enum video_standard);
int (*start_transfer)(void *);
int (*stop_transfer)(void *);
int (*control_iter_init)(void *, struct video_control_iter *);
int (*control_iter_next)(void *, struct video_control_iter *);
int (*get_control_desc_group)(void *,
struct video_control_desc_group *);
int (*get_control_group)(void *, struct video_control_group *);
int (*set_control_group)(void *, const struct video_control_group *);
int (*enum_input)(void *, uint32_t, struct video_input *);
int (*get_input)(void *, struct video_input *);
int (*set_input)(void *, struct video_input *);
int (*enum_audio)(void *, uint32_t, struct video_audio *);
int (*get_audio)(void *, struct video_audio *);
int (*set_audio)(void *, struct video_audio *);
int (*get_tuner)(void *, struct video_tuner *);
int (*set_tuner)(void *, struct video_tuner *);
int (*get_frequency)(void *, struct video_frequency *);
int (*set_frequency)(void *, struct video_frequency *);
int (*get_framerate)(void *, struct video_fract *);
int (*set_framerate)(void *, struct video_fract *);
};
struct video_attach_args {
const struct video_hw_if *hw_if;
void *hw_softc;
};
device_t video_attach_mi(const struct video_hw_if *, device_t, void *);
void video_submit_payload(device_t, const struct video_payload *);
#endif /* _SYS_DEV_VIDEO_IF_H_ */
|