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      <revision>
155	<revnumber>4.4</revnumber>
156	<date>2015-05-26</date>
157	<authorinitials>ap</authorinitials>
158	<revremark>Renamed V4L2_TUNER_ADC to V4L2_TUNER_SDR.
159Added V4L2_CID_RF_TUNER_RF_GAIN control.
160Added transmitter support for Software Defined Radio (SDR) Interface.
161	</revremark>
162      </revision>
163
164      <revision>
165	<revnumber>4.1</revnumber>
166	<date>2015-02-13</date>
167	<authorinitials>mcc</authorinitials>
168	<revremark>Fix documentation for media controller device nodes and add support for DVB device nodes.
169Add support for Tuner sub-device.
170	</revremark>
171      </revision>
172      <revision>
173	<revnumber>3.19</revnumber>
174	<date>2014-12-05</date>
175	<authorinitials>hv</authorinitials>
176	<revremark>Rewrote Colorspace chapter, added new &v4l2-ycbcr-encoding; and &v4l2-quantization; fields
177to &v4l2-pix-format;, &v4l2-pix-format-mplane; and &v4l2-mbus-framefmt;.
178	</revremark>
179      </revision>
180
181      <revision>
182	<revnumber>3.17</revnumber>
183	<date>2014-08-04</date>
184	<authorinitials>lp, hv</authorinitials>
185	<revremark>Extended &v4l2-pix-format;. Added format flags. Added compound control types
186and VIDIOC_QUERY_EXT_CTRL.
187	</revremark>
188      </revision>
189
190      <revision>
191	<revnumber>3.15</revnumber>
192	<date>2014-02-03</date>
193	<authorinitials>hv, ap</authorinitials>
194	<revremark>Update several sections of "Common API Elements": "Opening and Closing Devices"
195"Querying Capabilities", "Application Priority", "Video Inputs and Outputs", "Audio Inputs and Outputs"
196"Tuners and Modulators", "Video Standards" and "Digital Video (DV) Timings". Added SDR API.
197	</revremark>
198      </revision>
199
200      <revision>
201	<revnumber>3.14</revnumber>
202	<date>2013-11-25</date>
203	<authorinitials>rr</authorinitials>
204	<revremark>Set width and height as unsigned on v4l2_rect.
205	</revremark>
206      </revision>
207
208      <revision>
209	<revnumber>3.11</revnumber>
210	<date>2013-05-26</date>
211	<authorinitials>hv</authorinitials>
212	<revremark>Remove obsolete VIDIOC_DBG_G_CHIP_IDENT ioctl.
213	</revremark>
214      </revision>
215
216      <revision>
217	<revnumber>3.10</revnumber>
218	<date>2013-03-25</date>
219	<authorinitials>hv</authorinitials>
220	<revremark>Remove obsolete and unused DV_PRESET ioctls:
221	VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET, VIDIOC_QUERY_DV_PRESET and
222	VIDIOC_ENUM_DV_PRESET. Remove the related v4l2_input/output capability
223	flags V4L2_IN_CAP_PRESETS and V4L2_OUT_CAP_PRESETS. Added VIDIOC_DBG_G_CHIP_INFO.
224	</revremark>
225      </revision>
226
227      <revision>
228	<revnumber>3.9</revnumber>
229	<date>2012-12-03</date>
230	<authorinitials>sa, sn</authorinitials>
231	<revremark>Added timestamp types to v4l2_buffer.
232	Added V4L2_EVENT_CTRL_CH_RANGE control event changes flag.
233	</revremark>
234      </revision>
235
236      <revision>
237	<revnumber>3.6</revnumber>
238	<date>2012-07-02</date>
239	<authorinitials>hv</authorinitials>
240	<revremark>Added VIDIOC_ENUM_FREQ_BANDS.
241	</revremark>
242      </revision>
243
244      <revision>
245	<revnumber>3.5</revnumber>
246	<date>2012-05-07</date>
247	<authorinitials>sa, sn, hv</authorinitials>
248	<revremark>Added V4L2_CTRL_TYPE_INTEGER_MENU and V4L2 subdev
249	    selections API. Improved the description of V4L2_CID_COLORFX
250	    control, added V4L2_CID_COLORFX_CBCR control.
251	    Added camera controls V4L2_CID_AUTO_EXPOSURE_BIAS,
252	    V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE, V4L2_CID_IMAGE_STABILIZATION,
253	    V4L2_CID_ISO_SENSITIVITY, V4L2_CID_ISO_SENSITIVITY_AUTO,
254	    V4L2_CID_EXPOSURE_METERING, V4L2_CID_SCENE_MODE,
255	    V4L2_CID_3A_LOCK, V4L2_CID_AUTO_FOCUS_START,
256	    V4L2_CID_AUTO_FOCUS_STOP, V4L2_CID_AUTO_FOCUS_STATUS
257	    and V4L2_CID_AUTO_FOCUS_RANGE.
258	    Added VIDIOC_ENUM_DV_TIMINGS, VIDIOC_QUERY_DV_TIMINGS and
259	    VIDIOC_DV_TIMINGS_CAP.
260	</revremark>
261      </revision>
262
263      <revision>
264	<revnumber>3.4</revnumber>
265	<date>2012-01-25</date>
266	<authorinitials>sn</authorinitials>
267	<revremark>Added <link linkend="jpeg-controls">JPEG compression
268	    control class.</link>
269	</revremark>
270      </revision>
271
272      <revision>
273	<revnumber>3.3</revnumber>
274	<date>2012-01-11</date>
275	<authorinitials>hv</authorinitials>
276	<revremark>Added device_caps field to struct v4l2_capabilities.</revremark>
277      </revision>
278
279      <revision>
280	<revnumber>3.2</revnumber>
281	<date>2011-08-26</date>
282	<authorinitials>hv</authorinitials>
283	<revremark>Added V4L2_CTRL_FLAG_VOLATILE.</revremark>
284      </revision>
285
286      <revision>
287	<revnumber>3.1</revnumber>
288	<date>2011-06-27</date>
289	<authorinitials>mcc, po, hv</authorinitials>
290	<revremark>Documented that VIDIOC_QUERYCAP now returns a per-subsystem version instead of a per-driver one.
291		   Standardize an error code for invalid ioctl.
292		   Added V4L2_CTRL_TYPE_BITMASK.</revremark>
293      </revision>
294
295      <revision>
296	<revnumber>2.6.39</revnumber>
297	<date>2011-03-01</date>
298	<authorinitials>mcc, po</authorinitials>
299	<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>
300      </revision>
301
302      <revision>
303	<revnumber>2.6.37</revnumber>
304	<date>2010-08-06</date>
305	<authorinitials>hv</authorinitials>
306	<revremark>Removed obsolete vtx (videotext) API.</revremark>
307      </revision>
308
309      <revision>
310	<revnumber>2.6.33</revnumber>
311	<date>2009-12-03</date>
312	<authorinitials>mk</authorinitials>
313	<revremark>Added documentation for the Digital Video timings API.</revremark>
314      </revision>
315
316      <revision>
317	<revnumber>2.6.32</revnumber>
318	<date>2009-08-31</date>
319	<authorinitials>mcc</authorinitials>
320	<revremark>Now, revisions will match the kernel version where
321the V4L2 API changes will be used by the Linux Kernel.
322Also added Remote Controller chapter.</revremark>
323      </revision>
324
325      <revision>
326	<revnumber>0.29</revnumber>
327	<date>2009-08-26</date>
328	<authorinitials>ev</authorinitials>
329	<revremark>Added documentation for string controls and for FM Transmitter controls.</revremark>
330      </revision>
331
332      <revision>
333	<revnumber>0.28</revnumber>
334	<date>2009-08-26</date>
335	<authorinitials>gl</authorinitials>
336	<revremark>Added V4L2_CID_BAND_STOP_FILTER documentation.</revremark>
337      </revision>
338
339      <revision>
340	<revnumber>0.27</revnumber>
341	<date>2009-08-15</date>
342	<authorinitials>mcc</authorinitials>
343	<revremark>Added libv4l and Remote Controller documentation;
344added v4l2grab and keytable application examples.</revremark>
345      </revision>
346
347      <revision>
348	<revnumber>0.26</revnumber>
349	<date>2009-07-23</date>
350	<authorinitials>hv</authorinitials>
351	<revremark>Finalized the RDS capture API. Added modulator and RDS encoder
352capabilities. Added support for string controls.</revremark>
353      </revision>
354
355      <revision>
356	<revnumber>0.25</revnumber>
357	<date>2009-01-18</date>
358	<authorinitials>hv</authorinitials>
359	<revremark>Added pixel formats VYUY, NV16 and NV61, and changed
360the debug ioctls VIDIOC_DBG_G/S_REGISTER and VIDIOC_DBG_G_CHIP_IDENT.
361Added camera controls V4L2_CID_ZOOM_ABSOLUTE, V4L2_CID_ZOOM_RELATIVE,
362V4L2_CID_ZOOM_CONTINUOUS and V4L2_CID_PRIVACY.</revremark>
363      </revision>
364
365      <revision>
366	<revnumber>0.24</revnumber>
367	<date>2008-03-04</date>
368	<authorinitials>mhs</authorinitials>
369	<revremark>Added pixel formats Y16 and SBGGR16, new controls
370and a camera controls class. Removed VIDIOC_G/S_MPEGCOMP.</revremark>
371      </revision>
372
373      <revision>
374	<revnumber>0.23</revnumber>
375	<date>2007-08-30</date>
376	<authorinitials>mhs</authorinitials>
377	<revremark>Fixed a typo in VIDIOC_DBG_G/S_REGISTER.
378Clarified the byte order of packed pixel formats.</revremark>
379      </revision>
380
381      <revision>
382	<revnumber>0.22</revnumber>
383	<date>2007-08-29</date>
384	<authorinitials>mhs</authorinitials>
385	<revremark>Added the Video Output Overlay interface, new MPEG
386controls, V4L2_FIELD_INTERLACED_TB and V4L2_FIELD_INTERLACED_BT,
387VIDIOC_DBG_G/S_REGISTER, VIDIOC_(TRY_)ENCODER_CMD,
388VIDIOC_G_CHIP_IDENT, VIDIOC_G_ENC_INDEX, new pixel formats.
389Clarifications in the cropping chapter, about RGB pixel formats, the
390mmap(), poll(), select(), read() and write() functions. Typographical
391fixes.</revremark>
392      </revision>
393
394      <revision>
395	<revnumber>0.21</revnumber>
396	<date>2006-12-19</date>
397	<authorinitials>mhs</authorinitials>
398	<revremark>Fixed a link in the VIDIOC_G_EXT_CTRLS section.</revremark>
399      </revision>
400
401      <revision>
402	<revnumber>0.20</revnumber>
403	<date>2006-11-24</date>
404	<authorinitials>mhs</authorinitials>
405	<revremark>Clarified the purpose of the audioset field in
406struct v4l2_input and v4l2_output.</revremark>
407      </revision>
408
409      <revision>
410	<revnumber>0.19</revnumber>
411	<date>2006-10-19</date>
412	<authorinitials>mhs</authorinitials>
413	<revremark>Documented V4L2_PIX_FMT_RGB444.</revremark>
414      </revision>
415
416      <revision>
417	<revnumber>0.18</revnumber>
418	<date>2006-10-18</date>
419	<authorinitials>mhs</authorinitials>
420	<revremark>Added the description of extended controls by Hans
421Verkuil. Linked V4L2_PIX_FMT_MPEG to V4L2_CID_MPEG_STREAM_TYPE.</revremark>
422      </revision>
423
424      <revision>
425	<revnumber>0.17</revnumber>
426	<date>2006-10-12</date>
427	<authorinitials>mhs</authorinitials>
428	<revremark>Corrected V4L2_PIX_FMT_HM12 description.</revremark>
429      </revision>
430
431      <revision>
432	<revnumber>0.16</revnumber>
433	<date>2006-10-08</date>
434	<authorinitials>mhs</authorinitials>
435	<revremark>VIDIOC_ENUM_FRAMESIZES and
436VIDIOC_ENUM_FRAMEINTERVALS are now part of the API.</revremark>
437      </revision>
438
439      <revision>
440	<revnumber>0.15</revnumber>
441	<date>2006-09-23</date>
442	<authorinitials>mhs</authorinitials>
443	<revremark>Cleaned up the bibliography, added BT.653 and
444BT.1119. capture.c/start_capturing() for user pointer I/O did not
445initialize the buffer index. Documented the V4L MPEG and MJPEG
446VID_TYPEs and V4L2_PIX_FMT_SBGGR8. Updated the list of reserved pixel
447formats. See the history chapter for API changes.</revremark>
448      </revision>
449
450      <revision>
451	<revnumber>0.14</revnumber>
452	<date>2006-09-14</date>
453	<authorinitials>mr</authorinitials>
454	<revremark>Added VIDIOC_ENUM_FRAMESIZES and
455VIDIOC_ENUM_FRAMEINTERVALS proposal for frame format enumeration of
456digital devices.</revremark>
457      </revision>
458
459      <revision>
460	<revnumber>0.13</revnumber>
461	<date>2006-04-07</date>
462	<authorinitials>mhs</authorinitials>
463	<revremark>Corrected the description of struct v4l2_window
464clips. New V4L2_STD_ and V4L2_TUNER_MODE_LANG1_LANG2
465defines.</revremark>
466      </revision>
467
468      <revision>
469	<revnumber>0.12</revnumber>
470	<date>2006-02-03</date>
471	<authorinitials>mhs</authorinitials>
472	<revremark>Corrected the description of struct
473v4l2_captureparm and v4l2_outputparm.</revremark>
474      </revision>
475
476      <revision>
477	<revnumber>0.11</revnumber>
478	<date>2006-01-27</date>
479	<authorinitials>mhs</authorinitials>
480	<revremark>Improved the description of struct
481v4l2_tuner.</revremark>
482      </revision>
483
484      <revision>
485	<revnumber>0.10</revnumber>
486	<date>2006-01-10</date>
487	<authorinitials>mhs</authorinitials>
488	<revremark>VIDIOC_G_INPUT and VIDIOC_S_PARM
489clarifications.</revremark>
490      </revision>
491
492      <revision>
493	<revnumber>0.9</revnumber>
494	<date>2005-11-27</date>
495	<authorinitials>mhs</authorinitials>
496	<revremark>Improved the 525 line numbering diagram. Hans
497Verkuil and I rewrote the sliced VBI section. He also contributed a
498VIDIOC_LOG_STATUS page. Fixed VIDIOC_S_STD call in the video standard
499selection example. Various updates.</revremark>
500      </revision>
501
502      <revision>
503	<revnumber>0.8</revnumber>
504	<date>2004-10-04</date>
505	<authorinitials>mhs</authorinitials>
506	<revremark>Somehow a piece of junk slipped into the capture
507example, removed.</revremark>
508      </revision>
509
510      <revision>
511	<revnumber>0.7</revnumber>
512	<date>2004-09-19</date>
513	<authorinitials>mhs</authorinitials>
514	<revremark>Fixed video standard selection, control
515enumeration, downscaling and aspect example. Added read and user
516pointer i/o to video capture example.</revremark>
517      </revision>
518
519      <revision>
520	<revnumber>0.6</revnumber>
521	<date>2004-08-01</date>
522	<authorinitials>mhs</authorinitials>
523	<revremark>v4l2_buffer changes, added video capture example,
524various corrections.</revremark>
525      </revision>
526
527      <revision>
528	<revnumber>0.5</revnumber>
529	<date>2003-11-05</date>
530	<authorinitials>mhs</authorinitials>
531	<revremark>Pixel format erratum.</revremark>
532      </revision>
533
534      <revision>
535	<revnumber>0.4</revnumber>
536	<date>2003-09-17</date>
537	<authorinitials>mhs</authorinitials>
538	<revremark>Corrected source and Makefile to generate a PDF.
539SGML fixes. Added latest API changes. Closed gaps in the history
540chapter.</revremark>
541      </revision>
542
543      <revision>
544	<revnumber>0.3</revnumber>
545	<date>2003-02-05</date>
546	<authorinitials>mhs</authorinitials>
547	<revremark>Another draft, more corrections.</revremark>
548      </revision>
549
550      <revision>
551	<revnumber>0.2</revnumber>
552	<date>2003-01-15</date>
553	<authorinitials>mhs</authorinitials>
554	<revremark>Second draft, with corrections pointed out by Gerd
555Knorr.</revremark>
556      </revision>
557
558      <revision>
559	<revnumber>0.1</revnumber>
560	<date>2002-12-01</date>
561	<authorinitials>mhs</authorinitials>
562	<revremark>First draft, based on documentation by Bill Dirks
563and discussions on the V4L mailing list.</revremark>
564      </revision>
565    </revhistory>
566</partinfo>
567
568<title>Video for Linux Two API Specification</title>
569 <subtitle>Revision 4.4</subtitle>
570
571  <chapter id="common">
572    &sub-common;
573  </chapter>
574
575  <chapter id="pixfmt">
576    &sub-pixfmt;
577  </chapter>
578
579  <chapter id="io">
580    &sub-io;
581  </chapter>
582
583  <chapter id="devices">
584    <title>Interfaces</title>
585
586    <section id="capture"> &sub-dev-capture; </section>
587    <section id="overlay"> &sub-dev-overlay; </section>
588    <section id="output"> &sub-dev-output; </section>
589    <section id="osd"> &sub-dev-osd; </section>
590    <section id="codec"> &sub-dev-codec; </section>
591    <section id="effect"> &sub-dev-effect; </section>
592    <section id="raw-vbi"> &sub-dev-raw-vbi; </section>
593    <section id="sliced"> &sub-dev-sliced-vbi; </section>
594    <section id="ttx"> &sub-dev-teletext; </section>
595    <section id="radio"> &sub-dev-radio; </section>
596    <section id="rds"> &sub-dev-rds; </section>
597    <section id="sdr"> &sub-dev-sdr; </section>
598    <section id="event"> &sub-dev-event; </section>
599    <section id="subdev"> &sub-dev-subdev; </section>
600  </chapter>
601
602  <chapter id="driver">
603	  &sub-driver;
604  </chapter>
605
606  <chapter id="libv4l">
607	  &sub-libv4l;
608  </chapter>
609
610  <chapter id="compat">
611	  &sub-compat;
612  </chapter>
613
614  <appendix id="user-func">
615  <title>Function Reference</title>
616
617    <!-- Keep this alphabetically sorted. -->
618
619    &sub-close;
620    &sub-ioctl;
621    <!-- All ioctls go here. -->
622    &sub-create-bufs;
623    &sub-cropcap;
624    &sub-dbg-g-chip-info;
625    &sub-dbg-g-register;
626    &sub-decoder-cmd;
627    &sub-dqevent;
628    &sub-dv-timings-cap;
629    &sub-encoder-cmd;
630    &sub-enumaudio;
631    &sub-enumaudioout;
632    &sub-enum-dv-timings;
633    &sub-enum-fmt;
634    &sub-enum-framesizes;
635    &sub-enum-frameintervals;
636    &sub-enum-freq-bands;
637    &sub-enuminput;
638    &sub-enumoutput;
639    &sub-enumstd;
640    &sub-expbuf;
641    &sub-g-audio;
642    &sub-g-audioout;
643    &sub-g-crop;
644    &sub-g-ctrl;
645    &sub-g-dv-timings;
646    &sub-g-edid;
647    &sub-g-enc-index;
648    &sub-g-ext-ctrls;
649    &sub-g-fbuf;
650    &sub-g-fmt;
651    &sub-g-frequency;
652    &sub-g-input;
653    &sub-g-jpegcomp;
654    &sub-g-modulator;
655    &sub-g-output;
656    &sub-g-parm;
657    &sub-g-priority;
658    &sub-g-selection;
659    &sub-g-sliced-vbi-cap;
660    &sub-g-std;
661    &sub-g-tuner;
662    &sub-log-status;
663    &sub-overlay;
664    &sub-prepare-buf;
665    &sub-qbuf;
666    &sub-querybuf;
667    &sub-querycap;
668    &sub-queryctrl;
669    &sub-query-dv-timings;
670    &sub-querystd;
671    &sub-reqbufs;
672    &sub-s-hw-freq-seek;
673    &sub-streamon;
674    &sub-subdev-enum-frame-interval;
675    &sub-subdev-enum-frame-size;
676    &sub-subdev-enum-mbus-code;
677    &sub-subdev-g-crop;
678    &sub-subdev-g-fmt;
679    &sub-subdev-g-frame-interval;
680    &sub-subdev-g-selection;
681    &sub-subscribe-event;
682    <!-- End of ioctls. -->
683    &sub-mmap;
684    &sub-munmap;
685    &sub-open;
686    &sub-poll;
687    &sub-read;
688    &sub-select;
689    &sub-write;
690  </appendix>
691
692  <appendix>
693    <title>Common definitions for V4L2 and V4L2 subdev interfaces</title>
694      &sub-selections-common;
695  </appendix>
696
697  <appendix id="videodev">
698    <title>Video For Linux Two Header File</title>
699    &sub-videodev2-h;
700  </appendix>
701
702  <appendix id="capture-example">
703    <title>Video Capture Example</title>
704    &sub-capture-c;
705  </appendix>
706
707  <appendix id="v4l2grab-example">
708    <title>Video Grabber example using libv4l</title>
709    <para>This program demonstrates how to grab V4L2 images in ppm format by
710using libv4l handlers. The advantage is that this grabber can potentially work
711with any V4L2 driver.</para>
712    &sub-v4l2grab-c;
713  </appendix>
714
715  &sub-media-indices;
716
717  &sub-biblio;
718
719