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