Documentation/DocBook/media/v4l/v4l2.xml

   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
  24 documentation.</contrib>
  25       </author>
  26
  27       <author>
  28         <firstname>Hans</firstname>
  29         <surname>Verkuil</surname>
  30         <contrib>Designed and documented the VIDIOC_LOG_STATUS ioctl,
  31 the extended control ioctls, major parts of the sliced VBI API, the
  32 MPEG 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
  50 and 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
  57 MPEG 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,
  70 Remote 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
 141 Rubli, 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,
 151 structs, ioctls) must be noted in more detail in the history chapter
 152 (compat.xml), along with the possible impact on existing drivers and
 153 applications. -->
 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.
 160 Add 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
 168 to &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
 177 and 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
 312 the V4L2 API changes will be used by the Linux Kernel.
 313 Also 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;
 335 added 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
 343 capabilities. 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
 351 the debug ioctls VIDIOC_DBG_G/S_REGISTER and VIDIOC_DBG_G_CHIP_IDENT.
 352 Added camera controls V4L2_CID_ZOOM_ABSOLUTE, V4L2_CID_ZOOM_RELATIVE,
 353 V4L2_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
 361 and 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.
 369 Clarified 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
 377 controls, V4L2_FIELD_INTERLACED_TB and V4L2_FIELD_INTERLACED_BT,
 378 VIDIOC_DBG_G/S_REGISTER, VIDIOC_(TRY_)ENCODER_CMD,
 379 VIDIOC_G_CHIP_IDENT, VIDIOC_G_ENC_INDEX, new pixel formats.
 380 Clarifications in the cropping chapter, about RGB pixel formats, the
 381 mmap(), poll(), select(), read() and write() functions. Typographical
 382 fixes.</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
 397 struct 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
 412 Verkuil. 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
 427 VIDIOC_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
 435 BT.1119. capture.c/start_capturing() for user pointer I/O did not
 436 initialize the buffer index. Documented the V4L MPEG and MJPEG
 437 VID_TYPEs and V4L2_PIX_FMT_SBGGR8. Updated the list of reserved pixel
 438 formats. 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
 446 VIDIOC_ENUM_FRAMEINTERVALS proposal for frame format enumeration of
 447 digital 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
 455 clips. New V4L2_STD_ and V4L2_TUNER_MODE_LANG1_LANG2
 456 defines.</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
 464 v4l2_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
 472 v4l2_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
 480 clarifications.</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
 488 Verkuil and I rewrote the sliced VBI section. He also contributed a
 489 VIDIOC_LOG_STATUS page. Fixed VIDIOC_S_STD call in the video standard
 490 selection 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
 498 example, 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
 506 enumeration, downscaling and aspect example. Added read and user
 507 pointer 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,
 515 various 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.
 530 SGML fixes. Added latest API changes. Closed gaps in the history
 531 chapter.</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
 546 Knorr.</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
 554 and 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
 701 using libv4l handlers. The advantage is that this grabber can potentially work
 702 with any V4L2 driver.</para>
 703     &sub-v4l2grab-c;
 704   </appendix>
 705
 706   &sub-media-indices;
 707
 708   &sub-biblio;
 709