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1#ifndef __LINUX_VIDEODEV2_H
2#define __LINUX_VIDEODEV2_H
3/*
4 * Video for Linux Two
5 *
6 * Header file for v4l or V4L2 drivers and applications, for
7 * Linux kernels 2.2.x or 2.4.x.
8 *
9 * See http://bytesex.org/v4l/ for API specs and other
10 * v4l2 documentation.
11 *
12 * Author: Bill Dirks <bdirks@pacbell.net>
13 * Justin Schoeman
14 * et al.
15 */
16#ifdef __KERNEL__
17#include <linux/time.h> /* need struct timeval */
18#include <linux/poll.h>
19#include <linux/device.h>
20#endif
21#include <linux/compiler.h> /* need __user */
22
23
24#define OBSOLETE_OWNER 1 /* It will be removed for 2.6.15 */
25#define HAVE_V4L2 1
26
27/*
28 * Common stuff for both V4L1 and V4L2
29 * Moved from videodev.h
30 */
31
32#define VIDEO_MAX_FRAME 32
33
34#define VID_TYPE_CAPTURE 1 /* Can capture */
35#define VID_TYPE_TUNER 2 /* Can tune */
36#define VID_TYPE_TELETEXT 4 /* Does teletext */
37#define VID_TYPE_OVERLAY 8 /* Overlay onto frame buffer */
38#define VID_TYPE_CHROMAKEY 16 /* Overlay by chromakey */
39#define VID_TYPE_CLIPPING 32 /* Can clip */
40#define VID_TYPE_FRAMERAM 64 /* Uses the frame buffer memory */
41#define VID_TYPE_SCALES 128 /* Scalable */
42#define VID_TYPE_MONOCHROME 256 /* Monochrome only */
43#define VID_TYPE_SUBCAPTURE 512 /* Can capture subareas of the image */
44#define VID_TYPE_MPEG_DECODER 1024 /* Can decode MPEG streams */
45#define VID_TYPE_MPEG_ENCODER 2048 /* Can encode MPEG streams */
46#define VID_TYPE_MJPEG_DECODER 4096 /* Can decode MJPEG streams */
47#define VID_TYPE_MJPEG_ENCODER 8192 /* Can encode MJPEG streams */
48
49#ifdef __KERNEL__
50
51#define VFL_TYPE_GRABBER 0
52#define VFL_TYPE_VBI 1
53#define VFL_TYPE_RADIO 2
54#define VFL_TYPE_VTX 3
55
56struct video_device
57{
58 /* device info */
59 struct device *dev;
60 char name[32];
61 int type; /* v4l1 */
62 int type2; /* v4l2 */
63 int hardware;
64 int minor;
65
66 /* device ops + callbacks */
67 struct file_operations *fops;
68 void (*release)(struct video_device *vfd);
69
70
71#if OBSOLETE_OWNER /* to be removed in 2.6.15 */
72 /* obsolete -- fops->owner is used instead */
73 struct module *owner;
74 /* dev->driver_data will be used instead some day.
75 * Use the video_{get|set}_drvdata() helper functions,
76 * so the switch over will be transparent for you.
77 * Or use {pci|usb}_{get|set}_drvdata() directly. */
78 void *priv;
79#endif
80
81 /* for videodev.c intenal usage -- please don't touch */
82 int users; /* video_exclusive_{open|close} ... */
83 struct semaphore lock; /* ... helper function uses these */
84 char devfs_name[64]; /* devfs */
85 struct class_device class_dev; /* sysfs */
86};
87
88#define VIDEO_MAJOR 81
89
90extern int video_register_device(struct video_device *, int type, int nr);
91extern void video_unregister_device(struct video_device *);
92extern int video_usercopy(struct inode *inode, struct file *file,
93 unsigned int cmd, unsigned long arg,
94 int (*func)(struct inode *inode, struct file *file,
95 unsigned int cmd, void *arg));
96
97/* helper functions to alloc / release struct video_device, the
98 later can be used for video_device->release() */
99struct video_device *video_device_alloc(void);
100void video_device_release(struct video_device *vfd);
101
102#endif
103
104/*
105 * M I S C E L L A N E O U S
106 */
107
108/* Four-character-code (FOURCC) */
109#define v4l2_fourcc(a,b,c,d)\
110 (((__u32)(a)<<0)|((__u32)(b)<<8)|((__u32)(c)<<16)|((__u32)(d)<<24))
111
112/*
113 * E N U M S
114 */
115enum v4l2_field {
116 V4L2_FIELD_ANY = 0, /* driver can choose from none,
117 top, bottom, interlaced
118 depending on whatever it thinks
119 is approximate ... */
120 V4L2_FIELD_NONE = 1, /* this device has no fields ... */
121 V4L2_FIELD_TOP = 2, /* top field only */
122 V4L2_FIELD_BOTTOM = 3, /* bottom field only */
123 V4L2_FIELD_INTERLACED = 4, /* both fields interlaced */
124 V4L2_FIELD_SEQ_TB = 5, /* both fields sequential into one
125 buffer, top-bottom order */
126 V4L2_FIELD_SEQ_BT = 6, /* same as above + bottom-top order */
127 V4L2_FIELD_ALTERNATE = 7, /* both fields alternating into
128 separate buffers */
129};
130#define V4L2_FIELD_HAS_TOP(field) \
131 ((field) == V4L2_FIELD_TOP ||\
132 (field) == V4L2_FIELD_INTERLACED ||\
133 (field) == V4L2_FIELD_SEQ_TB ||\
134 (field) == V4L2_FIELD_SEQ_BT)
135#define V4L2_FIELD_HAS_BOTTOM(field) \
136 ((field) == V4L2_FIELD_BOTTOM ||\
137 (field) == V4L2_FIELD_INTERLACED ||\
138 (field) == V4L2_FIELD_SEQ_TB ||\
139 (field) == V4L2_FIELD_SEQ_BT)
140#define V4L2_FIELD_HAS_BOTH(field) \
141 ((field) == V4L2_FIELD_INTERLACED ||\
142 (field) == V4L2_FIELD_SEQ_TB ||\
143 (field) == V4L2_FIELD_SEQ_BT)
144
145enum v4l2_buf_type {
146 V4L2_BUF_TYPE_VIDEO_CAPTURE = 1,
147 V4L2_BUF_TYPE_VIDEO_OUTPUT = 2,
148 V4L2_BUF_TYPE_VIDEO_OVERLAY = 3,
149 V4L2_BUF_TYPE_VBI_CAPTURE = 4,
150 V4L2_BUF_TYPE_VBI_OUTPUT = 5,
151#if 1
152 /* Experimental Sliced VBI */
153 V4L2_BUF_TYPE_SLICED_VBI_CAPTURE = 6,
154 V4L2_BUF_TYPE_SLICED_VBI_OUTPUT = 7,
155#endif
156 V4L2_BUF_TYPE_PRIVATE = 0x80,
157};
158
159enum v4l2_ctrl_type {
160 V4L2_CTRL_TYPE_INTEGER = 1,
161 V4L2_CTRL_TYPE_BOOLEAN = 2,
162 V4L2_CTRL_TYPE_MENU = 3,
163 V4L2_CTRL_TYPE_BUTTON = 4,
164};
165
166enum v4l2_tuner_type {
167 V4L2_TUNER_RADIO = 1,
168 V4L2_TUNER_ANALOG_TV = 2,
169 V4L2_TUNER_DIGITAL_TV = 3,
170};
171
172enum v4l2_memory {
173 V4L2_MEMORY_MMAP = 1,
174 V4L2_MEMORY_USERPTR = 2,
175 V4L2_MEMORY_OVERLAY = 3,
176};
177
178/* see also http://vektor.theorem.ca/graphics/ycbcr/ */
179enum v4l2_colorspace {
180 /* ITU-R 601 -- broadcast NTSC/PAL */
181 V4L2_COLORSPACE_SMPTE170M = 1,
182
183 /* 1125-Line (US) HDTV */
184 V4L2_COLORSPACE_SMPTE240M = 2,
185
186 /* HD and modern captures. */
187 V4L2_COLORSPACE_REC709 = 3,
188
189 /* broken BT878 extents (601, luma range 16-253 instead of 16-235) */
190 V4L2_COLORSPACE_BT878 = 4,
191
192 /* These should be useful. Assume 601 extents. */
193 V4L2_COLORSPACE_470_SYSTEM_M = 5,
194 V4L2_COLORSPACE_470_SYSTEM_BG = 6,
195
196 /* I know there will be cameras that send this. So, this is
197 * unspecified chromaticities and full 0-255 on each of the
198 * Y'CbCr components
199 */
200 V4L2_COLORSPACE_JPEG = 7,
201
202 /* For RGB colourspaces, this is probably a good start. */
203 V4L2_COLORSPACE_SRGB = 8,
204};
205
206enum v4l2_priority {
207 V4L2_PRIORITY_UNSET = 0, /* not initialized */
208 V4L2_PRIORITY_BACKGROUND = 1,
209 V4L2_PRIORITY_INTERACTIVE = 2,
210 V4L2_PRIORITY_RECORD = 3,
211 V4L2_PRIORITY_DEFAULT = V4L2_PRIORITY_INTERACTIVE,
212};
213
214struct v4l2_rect {
215 __s32 left;
216 __s32 top;
217 __s32 width;
218 __s32 height;
219};
220
221struct v4l2_fract {
222 __u32 numerator;
223 __u32 denominator;
224};
225
226/*
227 * D R I V E R C A P A B I L I T I E S
228 */
229struct v4l2_capability
230{
231 __u8 driver[16]; /* i.e. "bttv" */
232 __u8 card[32]; /* i.e. "Hauppauge WinTV" */
233 __u8 bus_info[32]; /* "PCI:" + pci_name(pci_dev) */
234 __u32 version; /* should use KERNEL_VERSION() */
235 __u32 capabilities; /* Device capabilities */
236 __u32 reserved[4];
237};
238
239/* Values for 'capabilities' field */
240#define V4L2_CAP_VIDEO_CAPTURE 0x00000001 /* Is a video capture device */
241#define V4L2_CAP_VIDEO_OUTPUT 0x00000002 /* Is a video output device */
242#define V4L2_CAP_VIDEO_OVERLAY 0x00000004 /* Can do video overlay */
243#define V4L2_CAP_VBI_CAPTURE 0x00000010 /* Is a raw VBI capture device */
244#define V4L2_CAP_VBI_OUTPUT 0x00000020 /* Is a raw VBI output device */
245#if 1
246#define V4L2_CAP_SLICED_VBI_CAPTURE 0x00000040 /* Is a sliced VBI capture device */
247#define V4L2_CAP_SLICED_VBI_OUTPUT 0x00000080 /* Is a sliced VBI output device */
248#endif
249#define V4L2_CAP_RDS_CAPTURE 0x00000100 /* RDS data capture */
250
251#define V4L2_CAP_TUNER 0x00010000 /* has a tuner */
252#define V4L2_CAP_AUDIO 0x00020000 /* has audio support */
253#define V4L2_CAP_RADIO 0x00040000 /* is a radio device */
254
255#define V4L2_CAP_READWRITE 0x01000000 /* read/write systemcalls */
256#define V4L2_CAP_ASYNCIO 0x02000000 /* async I/O */
257#define V4L2_CAP_STREAMING 0x04000000 /* streaming I/O ioctls */
258
259/*
260 * V I D E O I M A G E F O R M A T
261 */
262
263struct v4l2_pix_format
264{
265 __u32 width;
266 __u32 height;
267 __u32 pixelformat;
268 enum v4l2_field field;
269 __u32 bytesperline; /* for padding, zero if unused */
270 __u32 sizeimage;
271 enum v4l2_colorspace colorspace;
272 __u32 priv; /* private data, depends on pixelformat */
273};
274
275/* Pixel format FOURCC depth Description */
276#define V4L2_PIX_FMT_RGB332 v4l2_fourcc('R','G','B','1') /* 8 RGB-3-3-2 */
277#define V4L2_PIX_FMT_RGB555 v4l2_fourcc('R','G','B','O') /* 16 RGB-5-5-5 */
278#define V4L2_PIX_FMT_RGB565 v4l2_fourcc('R','G','B','P') /* 16 RGB-5-6-5 */
279#define V4L2_PIX_FMT_RGB555X v4l2_fourcc('R','G','B','Q') /* 16 RGB-5-5-5 BE */
280#define V4L2_PIX_FMT_RGB565X v4l2_fourcc('R','G','B','R') /* 16 RGB-5-6-5 BE */
281#define V4L2_PIX_FMT_BGR24 v4l2_fourcc('B','G','R','3') /* 24 BGR-8-8-8 */
282#define V4L2_PIX_FMT_RGB24 v4l2_fourcc('R','G','B','3') /* 24 RGB-8-8-8 */
283#define V4L2_PIX_FMT_BGR32 v4l2_fourcc('B','G','R','4') /* 32 BGR-8-8-8-8 */
284#define V4L2_PIX_FMT_RGB32 v4l2_fourcc('R','G','B','4') /* 32 RGB-8-8-8-8 */
285#define V4L2_PIX_FMT_GREY v4l2_fourcc('G','R','E','Y') /* 8 Greyscale */
286#define V4L2_PIX_FMT_YVU410 v4l2_fourcc('Y','V','U','9') /* 9 YVU 4:1:0 */
287#define V4L2_PIX_FMT_YVU420 v4l2_fourcc('Y','V','1','2') /* 12 YVU 4:2:0 */
288#define V4L2_PIX_FMT_YUYV v4l2_fourcc('Y','U','Y','V') /* 16 YUV 4:2:2 */
289#define V4L2_PIX_FMT_UYVY v4l2_fourcc('U','Y','V','Y') /* 16 YUV 4:2:2 */
290#define V4L2_PIX_FMT_YUV422P v4l2_fourcc('4','2','2','P') /* 16 YVU422 planar */
291#define V4L2_PIX_FMT_YUV411P v4l2_fourcc('4','1','1','P') /* 16 YVU411 planar */
292#define V4L2_PIX_FMT_Y41P v4l2_fourcc('Y','4','1','P') /* 12 YUV 4:1:1 */
293
294/* two planes -- one Y, one Cr + Cb interleaved */
295#define V4L2_PIX_FMT_NV12 v4l2_fourcc('N','V','1','2') /* 12 Y/CbCr 4:2:0 */
296#define V4L2_PIX_FMT_NV21 v4l2_fourcc('N','V','2','1') /* 12 Y/CrCb 4:2:0 */
297
298/* The following formats are not defined in the V4L2 specification */
299#define V4L2_PIX_FMT_YUV410 v4l2_fourcc('Y','U','V','9') /* 9 YUV 4:1:0 */
300#define V4L2_PIX_FMT_YUV420 v4l2_fourcc('Y','U','1','2') /* 12 YUV 4:2:0 */
301#define V4L2_PIX_FMT_YYUV v4l2_fourcc('Y','Y','U','V') /* 16 YUV 4:2:2 */
302#define V4L2_PIX_FMT_HI240 v4l2_fourcc('H','I','2','4') /* 8 8-bit color */
303
304/* see http://www.siliconimaging.com/RGB%20Bayer.htm */
305#define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B','A','8','1') /* 8 BGBG.. GRGR.. */
306
307/* compressed formats */
308#define V4L2_PIX_FMT_MJPEG v4l2_fourcc('M','J','P','G') /* Motion-JPEG */
309#define V4L2_PIX_FMT_JPEG v4l2_fourcc('J','P','E','G') /* JFIF JPEG */
310#define V4L2_PIX_FMT_DV v4l2_fourcc('d','v','s','d') /* 1394 */
311#define V4L2_PIX_FMT_MPEG v4l2_fourcc('M','P','E','G') /* MPEG */
312
313/* Vendor-specific formats */
314#define V4L2_PIX_FMT_WNVA v4l2_fourcc('W','N','V','A') /* Winnov hw compress */
315#define V4L2_PIX_FMT_SN9C10X v4l2_fourcc('S','9','1','0') /* SN9C10x compression */
316#define V4L2_PIX_FMT_PWC1 v4l2_fourcc('P','W','C','1') /* pwc older webcam */
317#define V4L2_PIX_FMT_PWC2 v4l2_fourcc('P','W','C','2') /* pwc newer webcam */
318
319/*
320 * F O R M A T E N U M E R A T I O N
321 */
322struct v4l2_fmtdesc
323{
324 __u32 index; /* Format number */
325 enum v4l2_buf_type type; /* buffer type */
326 __u32 flags;
327 __u8 description[32]; /* Description string */
328 __u32 pixelformat; /* Format fourcc */
329 __u32 reserved[4];
330};
331
332#define V4L2_FMT_FLAG_COMPRESSED 0x0001
333
334
335/*
336 * T I M E C O D E
337 */
338struct v4l2_timecode
339{
340 __u32 type;
341 __u32 flags;
342 __u8 frames;
343 __u8 seconds;
344 __u8 minutes;
345 __u8 hours;
346 __u8 userbits[4];
347};
348
349/* Type */
350#define V4L2_TC_TYPE_24FPS 1
351#define V4L2_TC_TYPE_25FPS 2
352#define V4L2_TC_TYPE_30FPS 3
353#define V4L2_TC_TYPE_50FPS 4
354#define V4L2_TC_TYPE_60FPS 5
355
356/* Flags */
357#define V4L2_TC_FLAG_DROPFRAME 0x0001 /* "drop-frame" mode */
358#define V4L2_TC_FLAG_COLORFRAME 0x0002
359#define V4L2_TC_USERBITS_field 0x000C
360#define V4L2_TC_USERBITS_USERDEFINED 0x0000
361#define V4L2_TC_USERBITS_8BITCHARS 0x0008
362/* The above is based on SMPTE timecodes */
363
364
365/*
366 * M P E G C O M P R E S S I O N P A R A M E T E R S
367 *
368 * ### WARNING: this is still work-in-progress right now, most likely
369 * ### there will be some incompatible changes.
370 *
371 */
372
373
374enum v4l2_bitrate_mode {
375 V4L2_BITRATE_NONE = 0, /* not specified */
376 V4L2_BITRATE_CBR, /* constant bitrate */
377 V4L2_BITRATE_VBR, /* variable bitrate */
378};
379struct v4l2_bitrate {
380 /* rates are specified in kbit/sec */
381 enum v4l2_bitrate_mode mode;
382 __u32 min;
383 __u32 target; /* use this one for CBR */
384 __u32 max;
385};
386
387enum v4l2_mpeg_streamtype {
388 V4L2_MPEG_SS_1, /* MPEG-1 system stream */
389 V4L2_MPEG_PS_2, /* MPEG-2 program stream */
390 V4L2_MPEG_TS_2, /* MPEG-2 transport stream */
391 V4L2_MPEG_PS_DVD, /* MPEG-2 program stream with DVD header fixups */
392};
393enum v4l2_mpeg_audiotype {
394 V4L2_MPEG_AU_2_I, /* MPEG-2 layer 1 */
395 V4L2_MPEG_AU_2_II, /* MPEG-2 layer 2 */
396 V4L2_MPEG_AU_2_III, /* MPEG-2 layer 3 */
397 V4L2_MPEG_AC3, /* AC3 */
398 V4L2_MPEG_LPCM, /* LPCM */
399};
400enum v4l2_mpeg_videotype {
401 V4L2_MPEG_VI_1, /* MPEG-1 */
402 V4L2_MPEG_VI_2, /* MPEG-2 */
403};
404enum v4l2_mpeg_aspectratio {
405 V4L2_MPEG_ASPECT_SQUARE = 1, /* square pixel */
406 V4L2_MPEG_ASPECT_4_3 = 2, /* 4 : 3 */
407 V4L2_MPEG_ASPECT_16_9 = 3, /* 16 : 9 */
408 V4L2_MPEG_ASPECT_1_221 = 4, /* 1 : 2,21 */
409};
410
411struct v4l2_mpeg_compression {
412 /* general */
413 enum v4l2_mpeg_streamtype st_type;
414 struct v4l2_bitrate st_bitrate;
415
416 /* transport streams */
417 __u16 ts_pid_pmt;
418 __u16 ts_pid_audio;
419 __u16 ts_pid_video;
420 __u16 ts_pid_pcr;
421
422 /* program stream */
423 __u16 ps_size;
424 __u16 reserved_1; /* align */
425
426 /* audio */
427 enum v4l2_mpeg_audiotype au_type;
428 struct v4l2_bitrate au_bitrate;
429 __u32 au_sample_rate;
430 __u8 au_pesid;
431 __u8 reserved_2[3]; /* align */
432
433 /* video */
434 enum v4l2_mpeg_videotype vi_type;
435 enum v4l2_mpeg_aspectratio vi_aspect_ratio;
436 struct v4l2_bitrate vi_bitrate;
437 __u32 vi_frame_rate;
438 __u16 vi_frames_per_gop;
439 __u16 vi_bframes_count;
440 __u8 vi_pesid;
441 __u8 reserved_3[3]; /* align */
442
443 /* misc flags */
444 __u32 closed_gops:1;
445 __u32 pulldown:1;
446 __u32 reserved_4:30; /* align */
447
448 /* I don't expect the above being perfect yet ;) */
449 __u32 reserved_5[8];
450};
451
452struct v4l2_jpegcompression
453{
454 int quality;
455
456 int APPn; /* Number of APP segment to be written,
457 * must be 0..15 */
458 int APP_len; /* Length of data in JPEG APPn segment */
459 char APP_data[60]; /* Data in the JPEG APPn segment. */
460
461 int COM_len; /* Length of data in JPEG COM segment */
462 char COM_data[60]; /* Data in JPEG COM segment */
463
464 __u32 jpeg_markers; /* Which markers should go into the JPEG
465 * output. Unless you exactly know what
466 * you do, leave them untouched.
467 * Inluding less markers will make the
468 * resulting code smaller, but there will
469 * be fewer aplications which can read it.
470 * The presence of the APP and COM marker
471 * is influenced by APP_len and COM_len
472 * ONLY, not by this property! */
473
474#define V4L2_JPEG_MARKER_DHT (1<<3) /* Define Huffman Tables */
475#define V4L2_JPEG_MARKER_DQT (1<<4) /* Define Quantization Tables */
476#define V4L2_JPEG_MARKER_DRI (1<<5) /* Define Restart Interval */
477#define V4L2_JPEG_MARKER_COM (1<<6) /* Comment segment */
478#define V4L2_JPEG_MARKER_APP (1<<7) /* App segment, driver will
479 * allways use APP0 */
480};
481
482
483/*
484 * M E M O R Y - M A P P I N G B U F F E R S
485 */
486struct v4l2_requestbuffers
487{
488 __u32 count;
489 enum v4l2_buf_type type;
490 enum v4l2_memory memory;
491 __u32 reserved[2];
492};
493
494struct v4l2_buffer
495{
496 __u32 index;
497 enum v4l2_buf_type type;
498 __u32 bytesused;
499 __u32 flags;
500 enum v4l2_field field;
501 struct timeval timestamp;
502 struct v4l2_timecode timecode;
503 __u32 sequence;
504
505 /* memory location */
506 enum v4l2_memory memory;
507 union {
508 __u32 offset;
509 unsigned long userptr;
510 } m;
511 __u32 length;
512 __u32 input;
513 __u32 reserved;
514};
515
516/* Flags for 'flags' field */
517#define V4L2_BUF_FLAG_MAPPED 0x0001 /* Buffer is mapped (flag) */
518#define V4L2_BUF_FLAG_QUEUED 0x0002 /* Buffer is queued for processing */
519#define V4L2_BUF_FLAG_DONE 0x0004 /* Buffer is ready */
520#define V4L2_BUF_FLAG_KEYFRAME 0x0008 /* Image is a keyframe (I-frame) */
521#define V4L2_BUF_FLAG_PFRAME 0x0010 /* Image is a P-frame */
522#define V4L2_BUF_FLAG_BFRAME 0x0020 /* Image is a B-frame */
523#define V4L2_BUF_FLAG_TIMECODE 0x0100 /* timecode field is valid */
524#define V4L2_BUF_FLAG_INPUT 0x0200 /* input field is valid */
525
526/*
527 * O V E R L A Y P R E V I E W
528 */
529struct v4l2_framebuffer
530{
531 __u32 capability;
532 __u32 flags;
533/* FIXME: in theory we should pass something like PCI device + memory
534 * region + offset instead of some physical address */
535 void* base;
536 struct v4l2_pix_format fmt;
537};
538/* Flags for the 'capability' field. Read only */
539#define V4L2_FBUF_CAP_EXTERNOVERLAY 0x0001
540#define V4L2_FBUF_CAP_CHROMAKEY 0x0002
541#define V4L2_FBUF_CAP_LIST_CLIPPING 0x0004
542#define V4L2_FBUF_CAP_BITMAP_CLIPPING 0x0008
543/* Flags for the 'flags' field. */
544#define V4L2_FBUF_FLAG_PRIMARY 0x0001
545#define V4L2_FBUF_FLAG_OVERLAY 0x0002
546#define V4L2_FBUF_FLAG_CHROMAKEY 0x0004
547
548struct v4l2_clip
549{
550 struct v4l2_rect c;
551 struct v4l2_clip *next;
552};
553
554struct v4l2_window
555{
556 struct v4l2_rect w;
557 enum v4l2_field field;
558 __u32 chromakey;
559 struct v4l2_clip __user *clips;
560 __u32 clipcount;
561 void __user *bitmap;
562};
563
564
565/*
566 * C A P T U R E P A R A M E T E R S
567 */
568struct v4l2_captureparm
569{
570 __u32 capability; /* Supported modes */
571 __u32 capturemode; /* Current mode */
572 struct v4l2_fract timeperframe; /* Time per frame in .1us units */
573 __u32 extendedmode; /* Driver-specific extensions */
574 __u32 readbuffers; /* # of buffers for read */
575 __u32 reserved[4];
576};
577/* Flags for 'capability' and 'capturemode' fields */
578#define V4L2_MODE_HIGHQUALITY 0x0001 /* High quality imaging mode */
579#define V4L2_CAP_TIMEPERFRAME 0x1000 /* timeperframe field is supported */
580
581struct v4l2_outputparm
582{
583 __u32 capability; /* Supported modes */
584 __u32 outputmode; /* Current mode */
585 struct v4l2_fract timeperframe; /* Time per frame in seconds */
586 __u32 extendedmode; /* Driver-specific extensions */
587 __u32 writebuffers; /* # of buffers for write */
588 __u32 reserved[4];
589};
590
591/*
592 * I N P U T I M A G E C R O P P I N G
593 */
594
595struct v4l2_cropcap {
596 enum v4l2_buf_type type;
597 struct v4l2_rect bounds;
598 struct v4l2_rect defrect;
599 struct v4l2_fract pixelaspect;
600};
601
602struct v4l2_crop {
603 enum v4l2_buf_type type;
604 struct v4l2_rect c;
605};
606
607/*
608 * A N A L O G V I D E O S T A N D A R D
609 */
610
611typedef __u64 v4l2_std_id;
612
613/* one bit for each */
614#define V4L2_STD_PAL_B ((v4l2_std_id)0x00000001)
615#define V4L2_STD_PAL_B1 ((v4l2_std_id)0x00000002)
616#define V4L2_STD_PAL_G ((v4l2_std_id)0x00000004)
617#define V4L2_STD_PAL_H ((v4l2_std_id)0x00000008)
618#define V4L2_STD_PAL_I ((v4l2_std_id)0x00000010)
619#define V4L2_STD_PAL_D ((v4l2_std_id)0x00000020)
620#define V4L2_STD_PAL_D1 ((v4l2_std_id)0x00000040)
621#define V4L2_STD_PAL_K ((v4l2_std_id)0x00000080)
622
623#define V4L2_STD_PAL_M ((v4l2_std_id)0x00000100)
624#define V4L2_STD_PAL_N ((v4l2_std_id)0x00000200)
625#define V4L2_STD_PAL_Nc ((v4l2_std_id)0x00000400)
626#define V4L2_STD_PAL_60 ((v4l2_std_id)0x00000800)
627
628#define V4L2_STD_NTSC_M ((v4l2_std_id)0x00001000)
629#define V4L2_STD_NTSC_M_JP ((v4l2_std_id)0x00002000)
630#define V4L2_STD_NTSC_443 ((v4l2_std_id)0x00004000)
631
632#define V4L2_STD_SECAM_B ((v4l2_std_id)0x00010000)
633#define V4L2_STD_SECAM_D ((v4l2_std_id)0x00020000)
634#define V4L2_STD_SECAM_G ((v4l2_std_id)0x00040000)
635#define V4L2_STD_SECAM_H ((v4l2_std_id)0x00080000)
636#define V4L2_STD_SECAM_K ((v4l2_std_id)0x00100000)
637#define V4L2_STD_SECAM_K1 ((v4l2_std_id)0x00200000)
638#define V4L2_STD_SECAM_L ((v4l2_std_id)0x00400000)
639#define V4L2_STD_SECAM_LC ((v4l2_std_id)0x00800000)
640
641/* ATSC/HDTV */
642#define V4L2_STD_ATSC_8_VSB ((v4l2_std_id)0x01000000)
643#define V4L2_STD_ATSC_16_VSB ((v4l2_std_id)0x02000000)
644
645/* some common needed stuff */
646#define V4L2_STD_PAL_BG (V4L2_STD_PAL_B |\
647 V4L2_STD_PAL_B1 |\
648 V4L2_STD_PAL_G)
649#define V4L2_STD_PAL_DK (V4L2_STD_PAL_D |\
650 V4L2_STD_PAL_D1 |\
651 V4L2_STD_PAL_K)
652#define V4L2_STD_PAL (V4L2_STD_PAL_BG |\
653 V4L2_STD_PAL_DK |\
654 V4L2_STD_PAL_H |\
655 V4L2_STD_PAL_I)
656#define V4L2_STD_NTSC (V4L2_STD_NTSC_M |\
657 V4L2_STD_NTSC_M_JP)
658#define V4L2_STD_SECAM_DK (V4L2_STD_SECAM_D |\
659 V4L2_STD_SECAM_K |\
660 V4L2_STD_SECAM_K1)
661#define V4L2_STD_SECAM (V4L2_STD_SECAM_B |\
662 V4L2_STD_SECAM_G |\
663 V4L2_STD_SECAM_H |\
664 V4L2_STD_SECAM_DK |\
665 V4L2_STD_SECAM_L)
666
667#define V4L2_STD_525_60 (V4L2_STD_PAL_M |\
668 V4L2_STD_PAL_60 |\
669 V4L2_STD_NTSC |\
670 V4L2_STD_NTSC_443)
671#define V4L2_STD_625_50 (V4L2_STD_PAL |\
672 V4L2_STD_PAL_N |\
673 V4L2_STD_PAL_Nc |\
674 V4L2_STD_SECAM)
675#define V4L2_STD_ATSC (V4L2_STD_ATSC_8_VSB |\
676 V4L2_STD_ATSC_16_VSB)
677
678#define V4L2_STD_UNKNOWN 0
679#define V4L2_STD_ALL (V4L2_STD_525_60 |\
680 V4L2_STD_625_50)
681
682struct v4l2_standard
683{
684 __u32 index;
685 v4l2_std_id id;
686 __u8 name[24];
687 struct v4l2_fract frameperiod; /* Frames, not fields */
688 __u32 framelines;
689 __u32 reserved[4];
690};
691
692
693/*
694 * V I D E O I N P U T S
695 */
696struct v4l2_input
697{
698 __u32 index; /* Which input */
699 __u8 name[32]; /* Label */
700 __u32 type; /* Type of input */
701 __u32 audioset; /* Associated audios (bitfield) */
702 __u32 tuner; /* Associated tuner */
703 v4l2_std_id std;
704 __u32 status;
705 __u32 reserved[4];
706};
707/* Values for the 'type' field */
708#define V4L2_INPUT_TYPE_TUNER 1
709#define V4L2_INPUT_TYPE_CAMERA 2
710
711/* field 'status' - general */
712#define V4L2_IN_ST_NO_POWER 0x00000001 /* Attached device is off */
713#define V4L2_IN_ST_NO_SIGNAL 0x00000002
714#define V4L2_IN_ST_NO_COLOR 0x00000004
715
716/* field 'status' - analog */
717#define V4L2_IN_ST_NO_H_LOCK 0x00000100 /* No horizontal sync lock */
718#define V4L2_IN_ST_COLOR_KILL 0x00000200 /* Color killer is active */
719
720/* field 'status' - digital */
721#define V4L2_IN_ST_NO_SYNC 0x00010000 /* No synchronization lock */
722#define V4L2_IN_ST_NO_EQU 0x00020000 /* No equalizer lock */
723#define V4L2_IN_ST_NO_CARRIER 0x00040000 /* Carrier recovery failed */
724
725/* field 'status' - VCR and set-top box */
726#define V4L2_IN_ST_MACROVISION 0x01000000 /* Macrovision detected */
727#define V4L2_IN_ST_NO_ACCESS 0x02000000 /* Conditional access denied */
728#define V4L2_IN_ST_VTR 0x04000000 /* VTR time constant */
729
730/*
731 * V I D E O O U T P U T S
732 */
733struct v4l2_output
734{
735 __u32 index; /* Which output */
736 __u8 name[32]; /* Label */
737 __u32 type; /* Type of output */
738 __u32 audioset; /* Associated audios (bitfield) */
739 __u32 modulator; /* Associated modulator */
740 v4l2_std_id std;
741 __u32 reserved[4];
742};
743/* Values for the 'type' field */
744#define V4L2_OUTPUT_TYPE_MODULATOR 1
745#define V4L2_OUTPUT_TYPE_ANALOG 2
746#define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY 3
747
748/*
749 * C O N T R O L S
750 */
751struct v4l2_control
752{
753 __u32 id;
754 __s32 value;
755};
756
757/* Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
758struct v4l2_queryctrl
759{
760 __u32 id;
761 enum v4l2_ctrl_type type;
762 __u8 name[32]; /* Whatever */
763 __s32 minimum; /* Note signedness */
764 __s32 maximum;
765 __s32 step;
766 __s32 default_value;
767 __u32 flags;
768 __u32 reserved[2];
769};
770
771/* Used in the VIDIOC_QUERYMENU ioctl for querying menu items */
772struct v4l2_querymenu
773{
774 __u32 id;
775 __u32 index;
776 __u8 name[32]; /* Whatever */
777 __u32 reserved;
778};
779
780/* Control flags */
781#define V4L2_CTRL_FLAG_DISABLED 0x0001
782#define V4L2_CTRL_FLAG_GRABBED 0x0002
783
784/* Control IDs defined by V4L2 */
785#define V4L2_CID_BASE 0x00980900
786/* IDs reserved for driver specific controls */
787#define V4L2_CID_PRIVATE_BASE 0x08000000
788
789#define V4L2_CID_BRIGHTNESS (V4L2_CID_BASE+0)
790#define V4L2_CID_CONTRAST (V4L2_CID_BASE+1)
791#define V4L2_CID_SATURATION (V4L2_CID_BASE+2)
792#define V4L2_CID_HUE (V4L2_CID_BASE+3)
793#define V4L2_CID_AUDIO_VOLUME (V4L2_CID_BASE+5)
794#define V4L2_CID_AUDIO_BALANCE (V4L2_CID_BASE+6)
795#define V4L2_CID_AUDIO_BASS (V4L2_CID_BASE+7)
796#define V4L2_CID_AUDIO_TREBLE (V4L2_CID_BASE+8)
797#define V4L2_CID_AUDIO_MUTE (V4L2_CID_BASE+9)
798#define V4L2_CID_AUDIO_LOUDNESS (V4L2_CID_BASE+10)
799#define V4L2_CID_BLACK_LEVEL (V4L2_CID_BASE+11)
800#define V4L2_CID_AUTO_WHITE_BALANCE (V4L2_CID_BASE+12)
801#define V4L2_CID_DO_WHITE_BALANCE (V4L2_CID_BASE+13)
802#define V4L2_CID_RED_BALANCE (V4L2_CID_BASE+14)
803#define V4L2_CID_BLUE_BALANCE (V4L2_CID_BASE+15)
804#define V4L2_CID_GAMMA (V4L2_CID_BASE+16)
805#define V4L2_CID_WHITENESS (V4L2_CID_GAMMA) /* ? Not sure */
806#define V4L2_CID_EXPOSURE (V4L2_CID_BASE+17)
807#define V4L2_CID_AUTOGAIN (V4L2_CID_BASE+18)
808#define V4L2_CID_GAIN (V4L2_CID_BASE+19)
809#define V4L2_CID_HFLIP (V4L2_CID_BASE+20)
810#define V4L2_CID_VFLIP (V4L2_CID_BASE+21)
811#define V4L2_CID_HCENTER (V4L2_CID_BASE+22)
812#define V4L2_CID_VCENTER (V4L2_CID_BASE+23)
813#define V4L2_CID_LASTP1 (V4L2_CID_BASE+24) /* last CID + 1 */
814
815/*
816 * T U N I N G
817 */
818struct v4l2_tuner
819{
820 __u32 index;
821 __u8 name[32];
822 enum v4l2_tuner_type type;
823 __u32 capability;
824 __u32 rangelow;
825 __u32 rangehigh;
826 __u32 rxsubchans;
827 __u32 audmode;
828 __s32 signal;
829 __s32 afc;
830 __u32 reserved[4];
831};
832
833struct v4l2_modulator
834{
835 __u32 index;
836 __u8 name[32];
837 __u32 capability;
838 __u32 rangelow;
839 __u32 rangehigh;
840 __u32 txsubchans;
841 __u32 reserved[4];
842};
843
844/* Flags for the 'capability' field */
845#define V4L2_TUNER_CAP_LOW 0x0001
846#define V4L2_TUNER_CAP_NORM 0x0002
847#define V4L2_TUNER_CAP_STEREO 0x0010
848#define V4L2_TUNER_CAP_LANG2 0x0020
849#define V4L2_TUNER_CAP_SAP 0x0020
850#define V4L2_TUNER_CAP_LANG1 0x0040
851
852/* Flags for the 'rxsubchans' field */
853#define V4L2_TUNER_SUB_MONO 0x0001
854#define V4L2_TUNER_SUB_STEREO 0x0002
855#define V4L2_TUNER_SUB_LANG2 0x0004
856#define V4L2_TUNER_SUB_SAP 0x0004
857#define V4L2_TUNER_SUB_LANG1 0x0008
858
859/* Values for the 'audmode' field */
860#define V4L2_TUNER_MODE_MONO 0x0000
861#define V4L2_TUNER_MODE_STEREO 0x0001
862#define V4L2_TUNER_MODE_LANG2 0x0002
863#define V4L2_TUNER_MODE_SAP 0x0002
864#define V4L2_TUNER_MODE_LANG1 0x0003
865
866struct v4l2_frequency
867{
868 __u32 tuner;
869 enum v4l2_tuner_type type;
870 __u32 frequency;
871 __u32 reserved[8];
872};
873
874/*
875 * A U D I O
876 */
877struct v4l2_audio
878{
879 __u32 index;
880 __u8 name[32];
881 __u32 capability;
882 __u32 mode;
883 __u32 reserved[2];
884};
885/* Flags for the 'capability' field */
886#define V4L2_AUDCAP_STEREO 0x00001
887#define V4L2_AUDCAP_AVL 0x00002
888
889/* Flags for the 'mode' field */
890#define V4L2_AUDMODE_AVL 0x00001
891#define V4L2_AUDMODE_32BITS 0x00002
892
893struct v4l2_audioout
894{
895 __u32 index;
896 __u8 name[32];
897 __u32 capability;
898 __u32 mode;
899 __u32 reserved[2];
900};
901
902/*
903 * D A T A S E R V I C E S ( V B I )
904 *
905 * Data services API by Michael Schimek
906 */
907
908/* Raw VBI */
909
910struct v4l2_vbi_format
911{
912 __u32 sampling_rate; /* in 1 Hz */
913 __u32 offset;
914 __u32 samples_per_line;
915 __u32 sample_format; /* V4L2_PIX_FMT_* */
916 __s32 start[2];
917 __u32 count[2];
918 __u32 flags; /* V4L2_VBI_* */
919 __u32 reserved[2]; /* must be zero */
920};
921
922/* VBI flags */
923#define V4L2_VBI_UNSYNC (1<< 0)
924#define V4L2_VBI_INTERLACED (1<< 1)
925
926#if 1
927/* Sliced VBI
928 *
929 * This implements is a proposal V4L2 API to allow SLICED VBI
930 * required for some hardware encoders. It should change without
931 * notice in the definitive implementation.
932 */
933
934struct v4l2_sliced_vbi_format
935{
936 __u16 service_set;
937 /* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field
938 service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field
939 (equals frame lines 313-336 for 625 line video
940 standards, 263-286 for 525 line standards) */
941 __u16 service_lines[2][24];
942 __u32 io_size;
943 __u32 reserved[2]; /* must be zero */
944};
945
946#define V4L2_SLICED_TELETEXT_B (0x0001)
947#define V4L2_SLICED_VPS (0x0400)
948#define V4L2_SLICED_CAPTION_525 (0x1000)
949#define V4L2_SLICED_WSS_625 (0x4000)
950
951#define V4L2_SLICED_VBI_525 (V4L2_SLICED_CAPTION_525)
952#define V4L2_SLICED_VBI_625 (V4L2_SLICED_TELETEXT_B | V4L2_SLICED_VPS | V4L2_SLICED_WSS_625)
953
954struct v4l2_sliced_vbi_cap
955{
956 __u16 service_set;
957 /* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field
958 service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field
959 (equals frame lines 313-336 for 625 line video
960 standards, 263-286 for 525 line standards) */
961 __u16 service_lines[2][24];
962 __u32 reserved[4]; /* must be 0 */
963};
964
965struct v4l2_sliced_vbi_data
966{
967 __u32 id;
968 __u32 field; /* 0: first field, 1: second field */
969 __u32 line; /* 1-23 */
970 __u32 reserved; /* must be 0 */
971 __u8 data[48];
972};
973#endif
974
975/*
976 * A G G R E G A T E S T R U C T U R E S
977 */
978
979/* Stream data format
980 */
981struct v4l2_format
982{
983 enum v4l2_buf_type type;
984 union
985 {
986 struct v4l2_pix_format pix; // V4L2_BUF_TYPE_VIDEO_CAPTURE
987 struct v4l2_window win; // V4L2_BUF_TYPE_VIDEO_OVERLAY
988 struct v4l2_vbi_format vbi; // V4L2_BUF_TYPE_VBI_CAPTURE
989#if 1
990 struct v4l2_sliced_vbi_format sliced; // V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
991#endif
992 __u8 raw_data[200]; // user-defined
993 } fmt;
994};
995
996
997/* Stream type-dependent parameters
998 */
999struct v4l2_streamparm
1000{
1001 enum v4l2_buf_type type;
1002 union
1003 {
1004 struct v4l2_captureparm capture;
1005 struct v4l2_outputparm output;
1006 __u8 raw_data[200]; /* user-defined */
1007 } parm;
1008};
1009
1010
1011
1012/*
1013 * I O C T L C O D E S F O R V I D E O D E V I C E S
1014 *
1015 */
1016#define VIDIOC_QUERYCAP _IOR ('V', 0, struct v4l2_capability)
1017#define VIDIOC_RESERVED _IO ('V', 1)
1018#define VIDIOC_ENUM_FMT _IOWR ('V', 2, struct v4l2_fmtdesc)
1019#define VIDIOC_G_FMT _IOWR ('V', 4, struct v4l2_format)
1020#define VIDIOC_S_FMT _IOWR ('V', 5, struct v4l2_format)
1021#define VIDIOC_G_MPEGCOMP _IOR ('V', 6, struct v4l2_mpeg_compression)
1022#define VIDIOC_S_MPEGCOMP _IOW ('V', 7, struct v4l2_mpeg_compression)
1023#define VIDIOC_REQBUFS _IOWR ('V', 8, struct v4l2_requestbuffers)
1024#define VIDIOC_QUERYBUF _IOWR ('V', 9, struct v4l2_buffer)
1025#define VIDIOC_G_FBUF _IOR ('V', 10, struct v4l2_framebuffer)
1026#define VIDIOC_S_FBUF _IOW ('V', 11, struct v4l2_framebuffer)
1027#define VIDIOC_OVERLAY _IOW ('V', 14, int)
1028#define VIDIOC_QBUF _IOWR ('V', 15, struct v4l2_buffer)
1029#define VIDIOC_DQBUF _IOWR ('V', 17, struct v4l2_buffer)
1030#define VIDIOC_STREAMON _IOW ('V', 18, int)
1031#define VIDIOC_STREAMOFF _IOW ('V', 19, int)
1032#define VIDIOC_G_PARM _IOWR ('V', 21, struct v4l2_streamparm)
1033#define VIDIOC_S_PARM _IOWR ('V', 22, struct v4l2_streamparm)
1034#define VIDIOC_G_STD _IOR ('V', 23, v4l2_std_id)
1035#define VIDIOC_S_STD _IOW ('V', 24, v4l2_std_id)
1036#define VIDIOC_ENUMSTD _IOWR ('V', 25, struct v4l2_standard)
1037#define VIDIOC_ENUMINPUT _IOWR ('V', 26, struct v4l2_input)
1038#define VIDIOC_G_CTRL _IOWR ('V', 27, struct v4l2_control)
1039#define VIDIOC_S_CTRL _IOWR ('V', 28, struct v4l2_control)
1040#define VIDIOC_G_TUNER _IOWR ('V', 29, struct v4l2_tuner)
1041#define VIDIOC_S_TUNER _IOW ('V', 30, struct v4l2_tuner)
1042#define VIDIOC_G_AUDIO _IOR ('V', 33, struct v4l2_audio)
1043#define VIDIOC_S_AUDIO _IOW ('V', 34, struct v4l2_audio)
1044#define VIDIOC_QUERYCTRL _IOWR ('V', 36, struct v4l2_queryctrl)
1045#define VIDIOC_QUERYMENU _IOWR ('V', 37, struct v4l2_querymenu)
1046#define VIDIOC_G_INPUT _IOR ('V', 38, int)
1047#define VIDIOC_S_INPUT _IOWR ('V', 39, int)
1048#define VIDIOC_G_OUTPUT _IOR ('V', 46, int)
1049#define VIDIOC_S_OUTPUT _IOWR ('V', 47, int)
1050#define VIDIOC_ENUMOUTPUT _IOWR ('V', 48, struct v4l2_output)
1051#define VIDIOC_G_AUDOUT _IOR ('V', 49, struct v4l2_audioout)
1052#define VIDIOC_S_AUDOUT _IOW ('V', 50, struct v4l2_audioout)
1053#define VIDIOC_G_MODULATOR _IOWR ('V', 54, struct v4l2_modulator)
1054#define VIDIOC_S_MODULATOR _IOW ('V', 55, struct v4l2_modulator)
1055#define VIDIOC_G_FREQUENCY _IOWR ('V', 56, struct v4l2_frequency)
1056#define VIDIOC_S_FREQUENCY _IOW ('V', 57, struct v4l2_frequency)
1057#define VIDIOC_CROPCAP _IOWR ('V', 58, struct v4l2_cropcap)
1058#define VIDIOC_G_CROP _IOWR ('V', 59, struct v4l2_crop)
1059#define VIDIOC_S_CROP _IOW ('V', 60, struct v4l2_crop)
1060#define VIDIOC_G_JPEGCOMP _IOR ('V', 61, struct v4l2_jpegcompression)
1061#define VIDIOC_S_JPEGCOMP _IOW ('V', 62, struct v4l2_jpegcompression)
1062#define VIDIOC_QUERYSTD _IOR ('V', 63, v4l2_std_id)
1063#define VIDIOC_TRY_FMT _IOWR ('V', 64, struct v4l2_format)
1064#define VIDIOC_ENUMAUDIO _IOWR ('V', 65, struct v4l2_audio)
1065#define VIDIOC_ENUMAUDOUT _IOWR ('V', 66, struct v4l2_audioout)
1066#define VIDIOC_G_PRIORITY _IOR ('V', 67, enum v4l2_priority)
1067#define VIDIOC_S_PRIORITY _IOW ('V', 68, enum v4l2_priority)
1068#if 1
1069#define VIDIOC_G_SLICED_VBI_CAP _IOR ('V', 69, struct v4l2_sliced_vbi_cap)
1070#endif
1071#define VIDIOC_LOG_STATUS _IO ('V', 70)
1072
1073/* for compatibility, will go away some day */
1074#define VIDIOC_OVERLAY_OLD _IOWR ('V', 14, int)
1075#define VIDIOC_S_PARM_OLD _IOW ('V', 22, struct v4l2_streamparm)
1076#define VIDIOC_S_CTRL_OLD _IOW ('V', 28, struct v4l2_control)
1077#define VIDIOC_G_AUDIO_OLD _IOWR ('V', 33, struct v4l2_audio)
1078#define VIDIOC_G_AUDOUT_OLD _IOWR ('V', 49, struct v4l2_audioout)
1079#define VIDIOC_CROPCAP_OLD _IOR ('V', 58, struct v4l2_cropcap)
1080
1081#define BASE_VIDIOC_PRIVATE 192 /* 192-255 are private */
1082
1083
1084#ifdef __KERNEL__
1085/*
1086 *
1087 * V 4 L 2 D R I V E R H E L P E R A P I
1088 *
1089 * Some commonly needed functions for drivers (v4l2-common.o module)
1090 */
1091#include <linux/fs.h>
1092
1093/* Video standard functions */
1094extern unsigned int v4l2_video_std_fps(struct v4l2_standard *vs);
1095extern int v4l2_video_std_construct(struct v4l2_standard *vs,
1096 int id, char *name);
1097
1098/* prority handling */
1099struct v4l2_prio_state {
1100 atomic_t prios[4];
1101};
1102int v4l2_prio_init(struct v4l2_prio_state *global);
1103int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
1104 enum v4l2_priority new);
1105int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local);
1106int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local);
1107enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global);
1108int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local);
1109
1110/* names for fancy debug output */
1111extern char *v4l2_field_names[];
1112extern char *v4l2_type_names[];
1113extern char *v4l2_ioctl_names[];
1114
1115/* Compatibility layer interface -- v4l1-compat module */
1116typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file,
1117 unsigned int cmd, void *arg);
1118int v4l_compat_translate_ioctl(struct inode *inode, struct file *file,
1119 int cmd, void *arg, v4l2_kioctl driver_ioctl);
1120
1121#endif /* __KERNEL__ */
1122#endif /* __LINUX_VIDEODEV2_H */
1123
1124/*
1125 * Local variables:
1126 * c-basic-offset: 8
1127 * End:
1128 */