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