1 <partinfo>
2    <authorgroup>
3      <author>
4	<firstname>Michael</firstname>
5	<surname>Schimek</surname>
6	<othername role="mi">H</othername>
7	<affiliation>
8	  <address>
9	    <email>mschimek@gmx.at</email>
10	  </address>
11	</affiliation>
12      </author>
13
14      <author>
15	<firstname>Bill</firstname>
16	<surname>Dirks</surname>
17	<!-- Commented until Bill opts in to be spammed.
18	<affiliation>
19	  <address>
20	    <email>bill@thedirks.org</email>
21	  </address>
22	</affiliation> -->
23	<contrib>Original author of the V4L2 API and
24documentation.</contrib>
25      </author>
26
27      <author>
28	<firstname>Hans</firstname>
29	<surname>Verkuil</surname>
30	<contrib>Designed and documented the VIDIOC_LOG_STATUS ioctl,
31the extended control ioctls, major parts of the sliced VBI API, the
32MPEG encoder and decoder APIs and the DV Timings API.</contrib>
33	<affiliation>
34	  <address>
35	    <email>hverkuil@xs4all.nl</email>
36	  </address>
37	</affiliation>
38      </author>
39
40      <author>
41	<firstname>Martin</firstname>
42	<surname>Rubli</surname>
43	<!--
44	<affiliation>
45	  <address>
46	    <email>martin_rubli@logitech.com</email>
47	  </address>
48	</affiliation> -->
49	<contrib>Designed and documented the VIDIOC_ENUM_FRAMESIZES
50and VIDIOC_ENUM_FRAMEINTERVALS ioctls.</contrib>
51      </author>
52
53      <author>
54	<firstname>Andy</firstname>
55	<surname>Walls</surname>
56	<contrib>Documented the fielded V4L2_MPEG_STREAM_VBI_FMT_IVTV
57MPEG stream embedded, sliced VBI data format in this specification.
58</contrib>
59	<affiliation>
60	  <address>
61	    <email>awalls@md.metrocast.net</email>
62	  </address>
63	</affiliation>
64      </author>
65
66      <author>
67	<firstname>Mauro</firstname>
68	<surname>Carvalho Chehab</surname>
69	<contrib>Documented libv4l, designed and added v4l2grab example,
70Remote Controller chapter.</contrib>
71	<affiliation>
72	  <address>
73	    <email>m.chehab@samsung.com</email>
74	  </address>
75	</affiliation>
76      </author>
77
78      <author>
79	<firstname>Muralidharan</firstname>
80	<surname>Karicheri</surname>
81	<contrib>Documented the Digital Video timings API.</contrib>
82	<affiliation>
83	  <address>
84	    <email>m-karicheri2@ti.com</email>
85	  </address>
86	</affiliation>
87      </author>
88
89      <author>
90	<firstname>Pawel</firstname>
91	<surname>Osciak</surname>
92	<contrib>Designed and documented the multi-planar API.</contrib>
93	<affiliation>
94	  <address>
95	    <email>pawel AT osciak.com</email>
96	  </address>
97	</affiliation>
98      </author>
99
100      <author>
101	<firstname>Sakari</firstname>
102	<surname>Ailus</surname>
103	<contrib>Subdev selections API.</contrib>
104	<affiliation>
105	  <address>
106	    <email>sakari.ailus@iki.fi</email>
107	  </address>
108	</affiliation>
109      </author>
110      <author>
111	<firstname>Antti</firstname>
112	<surname>Palosaari</surname>
113	<contrib>SDR API.</contrib>
114	<affiliation>
115	  <address>
116	    <email>crope@iki.fi</email>
117	  </address>
118	</affiliation>
119      </author>
120    </authorgroup>
121
122    <copyright>
123      <year>1999</year>
124      <year>2000</year>
125      <year>2001</year>
126      <year>2002</year>
127      <year>2003</year>
128      <year>2004</year>
129      <year>2005</year>
130      <year>2006</year>
131      <year>2007</year>
132      <year>2008</year>
133      <year>2009</year>
134      <year>2010</year>
135      <year>2011</year>
136      <year>2012</year>
137      <year>2013</year>
138      <year>2014</year>
139      <year>2015</year>
140      <holder>Bill Dirks, Michael H. Schimek, Hans Verkuil, Martin
141Rubli, Andy Walls, Muralidharan Karicheri, Mauro Carvalho Chehab,
142	Pawel Osciak</holder>
143    </copyright>
144    <legalnotice>
145    <para>Except when explicitly stated as GPL, programming examples within
146	    this part can be used and distributed without restrictions.</para>
147    </legalnotice>
148    <revhistory>
149      <!-- Put document revisions here, newest first. -->
150      <!-- API revisions (changes and additions of defines, enums,
151structs, ioctls) must be noted in more detail in the history chapter
152(compat.xml), along with the possible impact on existing drivers and
153applications. -->
154
155      <revision>
156	<revnumber>3.21</revnumber>
157	<date>2015-02-13</date>
158	<authorinitials>mcc</authorinitials>
159	<revremark>Fix documentation for media controller device nodes and add support for DVB device nodes.
160Add support for Tuner sub-device.
161	</revremark>
162      </revision>
163      <revision>
164	<revnumber>3.19</revnumber>
165	<date>2014-12-05</date>
166	<authorinitials>hv</authorinitials>
167	<revremark>Rewrote Colorspace chapter, added new &v4l2-ycbcr-encoding; and &v4l2-quantization; fields
168to &v4l2-pix-format;, &v4l2-pix-format-mplane; and &v4l2-mbus-framefmt;.
169	</revremark>
170      </revision>
171
172      <revision>
173	<revnumber>3.17</revnumber>
174	<date>2014-08-04</date>
175	<authorinitials>lp, hv</authorinitials>
176	<revremark>Extended &v4l2-pix-format;. Added format flags. Added compound control types
177and VIDIOC_QUERY_EXT_CTRL.
178	</revremark>
179      </revision>
180
181      <revision>
182	<revnumber>3.15</revnumber>
183	<date>2014-02-03</date>
184	<authorinitials>hv, ap</authorinitials>
185	<revremark>Update several sections of "Common API Elements": "Opening and Closing Devices"
186"Querying Capabilities", "Application Priority", "Video Inputs and Outputs", "Audio Inputs and Outputs"
187"Tuners and Modulators", "Video Standards" and "Digital Video (DV) Timings". Added SDR API.
188	</revremark>
189      </revision>
190
191      <revision>
192	<revnumber>3.14</revnumber>
193	<date>2013-11-25</date>
194	<authorinitials>rr</authorinitials>
195	<revremark>Set width and height as unsigned on v4l2_rect.
196	</revremark>
197      </revision>
198
199      <revision>
200	<revnumber>3.11</revnumber>
201	<date>2013-05-26</date>
202	<authorinitials>hv</authorinitials>
203	<revremark>Remove obsolete VIDIOC_DBG_G_CHIP_IDENT ioctl.
204	</revremark>
205      </revision>
206
207      <revision>
208	<revnumber>3.10</revnumber>
209	<date>2013-03-25</date>
210	<authorinitials>hv</authorinitials>
211	<revremark>Remove obsolete and unused DV_PRESET ioctls:
212	VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET, VIDIOC_QUERY_DV_PRESET and
213	VIDIOC_ENUM_DV_PRESET. Remove the related v4l2_input/output capability
214	flags V4L2_IN_CAP_PRESETS and V4L2_OUT_CAP_PRESETS. Added VIDIOC_DBG_G_CHIP_INFO.
215	</revremark>
216      </revision>
217
218      <revision>
219	<revnumber>3.9</revnumber>
220	<date>2012-12-03</date>
221	<authorinitials>sa, sn</authorinitials>
222	<revremark>Added timestamp types to v4l2_buffer.
223	Added V4L2_EVENT_CTRL_CH_RANGE control event changes flag.
224	</revremark>
225      </revision>
226
227      <revision>
228	<revnumber>3.6</revnumber>
229	<date>2012-07-02</date>
230	<authorinitials>hv</authorinitials>
231	<revremark>Added VIDIOC_ENUM_FREQ_BANDS.
232	</revremark>
233      </revision>
234
235      <revision>
236	<revnumber>3.5</revnumber>
237	<date>2012-05-07</date>
238	<authorinitials>sa, sn, hv</authorinitials>
239	<revremark>Added V4L2_CTRL_TYPE_INTEGER_MENU and V4L2 subdev
240	    selections API. Improved the description of V4L2_CID_COLORFX
241	    control, added V4L2_CID_COLORFX_CBCR control.
242	    Added camera controls V4L2_CID_AUTO_EXPOSURE_BIAS,
243	    V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE, V4L2_CID_IMAGE_STABILIZATION,
244	    V4L2_CID_ISO_SENSITIVITY, V4L2_CID_ISO_SENSITIVITY_AUTO,
245	    V4L2_CID_EXPOSURE_METERING, V4L2_CID_SCENE_MODE,
246	    V4L2_CID_3A_LOCK, V4L2_CID_AUTO_FOCUS_START,
247	    V4L2_CID_AUTO_FOCUS_STOP, V4L2_CID_AUTO_FOCUS_STATUS
248	    and V4L2_CID_AUTO_FOCUS_RANGE.
249	    Added VIDIOC_ENUM_DV_TIMINGS, VIDIOC_QUERY_DV_TIMINGS and
250	    VIDIOC_DV_TIMINGS_CAP.
251	</revremark>
252      </revision>
253
254      <revision>
255	<revnumber>3.4</revnumber>
256	<date>2012-01-25</date>
257	<authorinitials>sn</authorinitials>
258	<revremark>Added <link linkend="jpeg-controls">JPEG compression
259	    control class.</link>
260	</revremark>
261      </revision>
262
263      <revision>
264	<revnumber>3.3</revnumber>
265	<date>2012-01-11</date>
266	<authorinitials>hv</authorinitials>
267	<revremark>Added device_caps field to struct v4l2_capabilities.</revremark>
268      </revision>
269
270      <revision>
271	<revnumber>3.2</revnumber>
272	<date>2011-08-26</date>
273	<authorinitials>hv</authorinitials>
274	<revremark>Added V4L2_CTRL_FLAG_VOLATILE.</revremark>
275      </revision>
276
277      <revision>
278	<revnumber>3.1</revnumber>
279	<date>2011-06-27</date>
280	<authorinitials>mcc, po, hv</authorinitials>
281	<revremark>Documented that VIDIOC_QUERYCAP now returns a per-subsystem version instead of a per-driver one.
282		   Standardize an error code for invalid ioctl.
283		   Added V4L2_CTRL_TYPE_BITMASK.</revremark>
284      </revision>
285
286      <revision>
287	<revnumber>2.6.39</revnumber>
288	<date>2011-03-01</date>
289	<authorinitials>mcc, po</authorinitials>
290	<revremark>Removed VIDIOC_*_OLD from videodev2.h header and update it to reflect latest changes. Added the <link linkend="planar-apis">multi-planar API</link>.</revremark>
291      </revision>
292
293      <revision>
294	<revnumber>2.6.37</revnumber>
295	<date>2010-08-06</date>
296	<authorinitials>hv</authorinitials>
297	<revremark>Removed obsolete vtx (videotext) API.</revremark>
298      </revision>
299
300      <revision>
301	<revnumber>2.6.33</revnumber>
302	<date>2009-12-03</date>
303	<authorinitials>mk</authorinitials>
304	<revremark>Added documentation for the Digital Video timings API.</revremark>
305      </revision>
306
307      <revision>
308	<revnumber>2.6.32</revnumber>
309	<date>2009-08-31</date>
310	<authorinitials>mcc</authorinitials>
311	<revremark>Now, revisions will match the kernel version where
312the V4L2 API changes will be used by the Linux Kernel.
313Also added Remote Controller chapter.</revremark>
314      </revision>
315
316      <revision>
317	<revnumber>0.29</revnumber>
318	<date>2009-08-26</date>
319	<authorinitials>ev</authorinitials>
320	<revremark>Added documentation for string controls and for FM Transmitter controls.</revremark>
321      </revision>
322
323      <revision>
324	<revnumber>0.28</revnumber>
325	<date>2009-08-26</date>
326	<authorinitials>gl</authorinitials>
327	<revremark>Added V4L2_CID_BAND_STOP_FILTER documentation.</revremark>
328      </revision>
329
330      <revision>
331	<revnumber>0.27</revnumber>
332	<date>2009-08-15</date>
333	<authorinitials>mcc</authorinitials>
334	<revremark>Added libv4l and Remote Controller documentation;
335added v4l2grab and keytable application examples.</revremark>
336      </revision>
337
338      <revision>
339	<revnumber>0.26</revnumber>
340	<date>2009-07-23</date>
341	<authorinitials>hv</authorinitials>
342	<revremark>Finalized the RDS capture API. Added modulator and RDS encoder
343capabilities. Added support for string controls.</revremark>
344      </revision>
345
346      <revision>
347	<revnumber>0.25</revnumber>
348	<date>2009-01-18</date>
349	<authorinitials>hv</authorinitials>
350	<revremark>Added pixel formats VYUY, NV16 and NV61, and changed
351the debug ioctls VIDIOC_DBG_G/S_REGISTER and VIDIOC_DBG_G_CHIP_IDENT.
352Added camera controls V4L2_CID_ZOOM_ABSOLUTE, V4L2_CID_ZOOM_RELATIVE,
353V4L2_CID_ZOOM_CONTINUOUS and V4L2_CID_PRIVACY.</revremark>
354      </revision>
355
356      <revision>
357	<revnumber>0.24</revnumber>
358	<date>2008-03-04</date>
359	<authorinitials>mhs</authorinitials>
360	<revremark>Added pixel formats Y16 and SBGGR16, new controls
361and a camera controls class. Removed VIDIOC_G/S_MPEGCOMP.</revremark>
362      </revision>
363
364      <revision>
365	<revnumber>0.23</revnumber>
366	<date>2007-08-30</date>
367	<authorinitials>mhs</authorinitials>
368	<revremark>Fixed a typo in VIDIOC_DBG_G/S_REGISTER.
369Clarified the byte order of packed pixel formats.</revremark>
370      </revision>
371
372      <revision>
373	<revnumber>0.22</revnumber>
374	<date>2007-08-29</date>
375	<authorinitials>mhs</authorinitials>
376	<revremark>Added the Video Output Overlay interface, new MPEG
377controls, V4L2_FIELD_INTERLACED_TB and V4L2_FIELD_INTERLACED_BT,
378VIDIOC_DBG_G/S_REGISTER, VIDIOC_(TRY_)ENCODER_CMD,
379VIDIOC_G_CHIP_IDENT, VIDIOC_G_ENC_INDEX, new pixel formats.
380Clarifications in the cropping chapter, about RGB pixel formats, the
381mmap(), poll(), select(), read() and write() functions. Typographical
382fixes.</revremark>
383      </revision>
384
385      <revision>
386	<revnumber>0.21</revnumber>
387	<date>2006-12-19</date>
388	<authorinitials>mhs</authorinitials>
389	<revremark>Fixed a link in the VIDIOC_G_EXT_CTRLS section.</revremark>
390      </revision>
391
392      <revision>
393	<revnumber>0.20</revnumber>
394	<date>2006-11-24</date>
395	<authorinitials>mhs</authorinitials>
396	<revremark>Clarified the purpose of the audioset field in
397struct v4l2_input and v4l2_output.</revremark>
398      </revision>
399
400      <revision>
401	<revnumber>0.19</revnumber>
402	<date>2006-10-19</date>
403	<authorinitials>mhs</authorinitials>
404	<revremark>Documented V4L2_PIX_FMT_RGB444.</revremark>
405      </revision>
406
407      <revision>
408	<revnumber>0.18</revnumber>
409	<date>2006-10-18</date>
410	<authorinitials>mhs</authorinitials>
411	<revremark>Added the description of extended controls by Hans
412Verkuil. Linked V4L2_PIX_FMT_MPEG to V4L2_CID_MPEG_STREAM_TYPE.</revremark>
413      </revision>
414
415      <revision>
416	<revnumber>0.17</revnumber>
417	<date>2006-10-12</date>
418	<authorinitials>mhs</authorinitials>
419	<revremark>Corrected V4L2_PIX_FMT_HM12 description.</revremark>
420      </revision>
421
422      <revision>
423	<revnumber>0.16</revnumber>
424	<date>2006-10-08</date>
425	<authorinitials>mhs</authorinitials>
426	<revremark>VIDIOC_ENUM_FRAMESIZES and
427VIDIOC_ENUM_FRAMEINTERVALS are now part of the API.</revremark>
428      </revision>
429
430      <revision>
431	<revnumber>0.15</revnumber>
432	<date>2006-09-23</date>
433	<authorinitials>mhs</authorinitials>
434	<revremark>Cleaned up the bibliography, added BT.653 and
435BT.1119. capture.c/start_capturing() for user pointer I/O did not
436initialize the buffer index. Documented the V4L MPEG and MJPEG
437VID_TYPEs and V4L2_PIX_FMT_SBGGR8. Updated the list of reserved pixel
438formats. See the history chapter for API changes.</revremark>
439      </revision>
440
441      <revision>
442	<revnumber>0.14</revnumber>
443	<date>2006-09-14</date>
444	<authorinitials>mr</authorinitials>
445	<revremark>Added VIDIOC_ENUM_FRAMESIZES and
446VIDIOC_ENUM_FRAMEINTERVALS proposal for frame format enumeration of
447digital devices.</revremark>
448      </revision>
449
450      <revision>
451	<revnumber>0.13</revnumber>
452	<date>2006-04-07</date>
453	<authorinitials>mhs</authorinitials>
454	<revremark>Corrected the description of struct v4l2_window
455clips. New V4L2_STD_ and V4L2_TUNER_MODE_LANG1_LANG2
456defines.</revremark>
457      </revision>
458
459      <revision>
460	<revnumber>0.12</revnumber>
461	<date>2006-02-03</date>
462	<authorinitials>mhs</authorinitials>
463	<revremark>Corrected the description of struct
464v4l2_captureparm and v4l2_outputparm.</revremark>
465      </revision>
466
467      <revision>
468	<revnumber>0.11</revnumber>
469	<date>2006-01-27</date>
470	<authorinitials>mhs</authorinitials>
471	<revremark>Improved the description of struct
472v4l2_tuner.</revremark>
473      </revision>
474
475      <revision>
476	<revnumber>0.10</revnumber>
477	<date>2006-01-10</date>
478	<authorinitials>mhs</authorinitials>
479	<revremark>VIDIOC_G_INPUT and VIDIOC_S_PARM
480clarifications.</revremark>
481      </revision>
482
483      <revision>
484	<revnumber>0.9</revnumber>
485	<date>2005-11-27</date>
486	<authorinitials>mhs</authorinitials>
487	<revremark>Improved the 525 line numbering diagram. Hans
488Verkuil and I rewrote the sliced VBI section. He also contributed a
489VIDIOC_LOG_STATUS page. Fixed VIDIOC_S_STD call in the video standard
490selection example. Various updates.</revremark>
491      </revision>
492
493      <revision>
494	<revnumber>0.8</revnumber>
495	<date>2004-10-04</date>
496	<authorinitials>mhs</authorinitials>
497	<revremark>Somehow a piece of junk slipped into the capture
498example, removed.</revremark>
499      </revision>
500
501      <revision>
502	<revnumber>0.7</revnumber>
503	<date>2004-09-19</date>
504	<authorinitials>mhs</authorinitials>
505	<revremark>Fixed video standard selection, control
506enumeration, downscaling and aspect example. Added read and user
507pointer i/o to video capture example.</revremark>
508      </revision>
509
510      <revision>
511	<revnumber>0.6</revnumber>
512	<date>2004-08-01</date>
513	<authorinitials>mhs</authorinitials>
514	<revremark>v4l2_buffer changes, added video capture example,
515various corrections.</revremark>
516      </revision>
517
518      <revision>
519	<revnumber>0.5</revnumber>
520	<date>2003-11-05</date>
521	<authorinitials>mhs</authorinitials>
522	<revremark>Pixel format erratum.</revremark>
523      </revision>
524
525      <revision>
526	<revnumber>0.4</revnumber>
527	<date>2003-09-17</date>
528	<authorinitials>mhs</authorinitials>
529	<revremark>Corrected source and Makefile to generate a PDF.
530SGML fixes. Added latest API changes. Closed gaps in the history
531chapter.</revremark>
532      </revision>
533
534      <revision>
535	<revnumber>0.3</revnumber>
536	<date>2003-02-05</date>
537	<authorinitials>mhs</authorinitials>
538	<revremark>Another draft, more corrections.</revremark>
539      </revision>
540
541      <revision>
542	<revnumber>0.2</revnumber>
543	<date>2003-01-15</date>
544	<authorinitials>mhs</authorinitials>
545	<revremark>Second draft, with corrections pointed out by Gerd
546Knorr.</revremark>
547      </revision>
548
549      <revision>
550	<revnumber>0.1</revnumber>
551	<date>2002-12-01</date>
552	<authorinitials>mhs</authorinitials>
553	<revremark>First draft, based on documentation by Bill Dirks
554and discussions on the V4L mailing list.</revremark>
555      </revision>
556    </revhistory>
557</partinfo>
558
559<title>Video for Linux Two API Specification</title>
560 <subtitle>Revision 3.19</subtitle>
561
562  <chapter id="common">
563    &sub-common;
564  </chapter>
565
566  <chapter id="pixfmt">
567    &sub-pixfmt;
568  </chapter>
569
570  <chapter id="io">
571    &sub-io;
572  </chapter>
573
574  <chapter id="devices">
575    <title>Interfaces</title>
576
577    <section id="capture"> &sub-dev-capture; </section>
578    <section id="overlay"> &sub-dev-overlay; </section>
579    <section id="output"> &sub-dev-output; </section>
580    <section id="osd"> &sub-dev-osd; </section>
581    <section id="codec"> &sub-dev-codec; </section>
582    <section id="effect"> &sub-dev-effect; </section>
583    <section id="raw-vbi"> &sub-dev-raw-vbi; </section>
584    <section id="sliced"> &sub-dev-sliced-vbi; </section>
585    <section id="ttx"> &sub-dev-teletext; </section>
586    <section id="radio"> &sub-dev-radio; </section>
587    <section id="rds"> &sub-dev-rds; </section>
588    <section id="sdr"> &sub-dev-sdr; </section>
589    <section id="event"> &sub-dev-event; </section>
590    <section id="subdev"> &sub-dev-subdev; </section>
591  </chapter>
592
593  <chapter id="driver">
594	  &sub-driver;
595  </chapter>
596
597  <chapter id="libv4l">
598	  &sub-libv4l;
599  </chapter>
600
601  <chapter id="compat">
602	  &sub-compat;
603  </chapter>
604
605  <appendix id="user-func">
606  <title>Function Reference</title>
607
608    <!-- Keep this alphabetically sorted. -->
609
610    &sub-close;
611    &sub-ioctl;
612    <!-- All ioctls go here. -->
613    &sub-create-bufs;
614    &sub-cropcap;
615    &sub-dbg-g-chip-info;
616    &sub-dbg-g-register;
617    &sub-decoder-cmd;
618    &sub-dqevent;
619    &sub-dv-timings-cap;
620    &sub-encoder-cmd;
621    &sub-enumaudio;
622    &sub-enumaudioout;
623    &sub-enum-dv-timings;
624    &sub-enum-fmt;
625    &sub-enum-framesizes;
626    &sub-enum-frameintervals;
627    &sub-enum-freq-bands;
628    &sub-enuminput;
629    &sub-enumoutput;
630    &sub-enumstd;
631    &sub-expbuf;
632    &sub-g-audio;
633    &sub-g-audioout;
634    &sub-g-crop;
635    &sub-g-ctrl;
636    &sub-g-dv-timings;
637    &sub-g-edid;
638    &sub-g-enc-index;
639    &sub-g-ext-ctrls;
640    &sub-g-fbuf;
641    &sub-g-fmt;
642    &sub-g-frequency;
643    &sub-g-input;
644    &sub-g-jpegcomp;
645    &sub-g-modulator;
646    &sub-g-output;
647    &sub-g-parm;
648    &sub-g-priority;
649    &sub-g-selection;
650    &sub-g-sliced-vbi-cap;
651    &sub-g-std;
652    &sub-g-tuner;
653    &sub-log-status;
654    &sub-overlay;
655    &sub-prepare-buf;
656    &sub-qbuf;
657    &sub-querybuf;
658    &sub-querycap;
659    &sub-queryctrl;
660    &sub-query-dv-timings;
661    &sub-querystd;
662    &sub-reqbufs;
663    &sub-s-hw-freq-seek;
664    &sub-streamon;
665    &sub-subdev-enum-frame-interval;
666    &sub-subdev-enum-frame-size;
667    &sub-subdev-enum-mbus-code;
668    &sub-subdev-g-crop;
669    &sub-subdev-g-fmt;
670    &sub-subdev-g-frame-interval;
671    &sub-subdev-g-selection;
672    &sub-subscribe-event;
673    <!-- End of ioctls. -->
674    &sub-mmap;
675    &sub-munmap;
676    &sub-open;
677    &sub-poll;
678    &sub-read;
679    &sub-select;
680    &sub-write;
681  </appendix>
682
683  <appendix>
684    <title>Common definitions for V4L2 and V4L2 subdev interfaces</title>
685      &sub-selections-common;
686  </appendix>
687
688  <appendix id="videodev">
689    <title>Video For Linux Two Header File</title>
690    &sub-videodev2-h;
691  </appendix>
692
693  <appendix id="capture-example">
694    <title>Video Capture Example</title>
695    &sub-capture-c;
696  </appendix>
697
698  <appendix id="v4l2grab-example">
699    <title>Video Grabber example using libv4l</title>
700    <para>This program demonstrates how to grab V4L2 images in ppm format by
701using libv4l handlers. The advantage is that this grabber can potentially work
702with any V4L2 driver.</para>
703    &sub-v4l2grab-c;
704  </appendix>
705
706  &sub-media-indices;
707
708  &sub-biblio;
709
710